2024-03-28T18:31:40Zhttps://shareok.org/oai/requestoai:shareok.org:11244/463082019-10-16T18:51:41Zcom_11244_10460com_11244_6231col_11244_10464
2016-11-14T21:16:46Z
urn:hdl:11244/46308
Predicting the Seasonal Performance Factor of Residential Air-source Heat Pumps in Oklahoma
Harp, Sam L.
Mahoney, George W. A.
Garton, James E.
Huhnke, Raymond L.
2016-11-14T21:16:46Z
2016-11-14T21:16:46Z
1982-12-01
text
http://hdl.handle.net/11244/46308
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oai:shareok.org:11244/263442019-10-17T16:46:40Zcom_11244_10460com_11244_6231col_11244_10464
2016-01-27T15:49:16Z
urn:hdl:11244/26344
Relationship of Kindergarten Children's Reciprocal Sociometric Choices to Personal and Social Adjustment
Curd, Ann Adair
Hoffer, Josephine
Starkweather, Elizabeth K.
2016-01-27T15:49:16Z
2016-01-27T15:49:16Z
1967-05-01
text
http://hdl.handle.net/11244/26344
Copyright is held by the author who has granted the Oklahoma State University Library the non-exclusive right to share this material in its institutional repository. Contact Digital Library Services at lib-dls@okstate.edu or 405-744-9161 for the permission policy on the use, reproduction or distribution of this material.
Oklahoma State University
oai:shareok.org:11244/325272019-10-17T14:06:47Zcom_11244_10460com_11244_6231col_11244_10464
2016-03-09T17:13:57Z
urn:hdl:11244/32527
Flow Capacity of a Viscous Air Flow Meter
Nelson, Charles Emil
Easton, W. H.
Boggs, J. A.
2016-03-09T17:13:57Z
2016-03-09T17:13:57Z
1956-05-01
text
http://hdl.handle.net/11244/32527
Copyright is held by the author who has granted the Oklahoma State University Library the non-exclusive right to share this material in its institutional repository. Contact Digital Library Services at lib-dls@okstate.edu or 405-744-9161 for the permission policy on the use, reproduction or distribution of this material.
Oklahoma State University
oai:shareok.org:11244/306782019-10-18T17:06:19Zcom_11244_10460com_11244_6231col_11244_10464
2016-02-17T21:49:47Z
urn:hdl:11244/30678
Computer Program for Solving Two-dimensional Unsteadystate Flow Problems by the Alternatingdirection Impucit Method
DeMoss, Dean M.
Cornell, David
Boggs, J. H.
Venn, R. E.
2016-02-17T21:49:47Z
2016-02-17T21:49:47Z
1961-08-01
text
http://hdl.handle.net/11244/30678
Copyright is held by the author who has granted the Oklahoma State University Library the non-exclusive right to share this material in its institutional repository. Contact Digital Library Services at lib-dls@okstate.edu or 405-744-9161 for the permission policy on the use, reproduction or distribution of this material.
Oklahoma State University
oai:shareok.org:11244/118702019-10-19T14:22:37Zcom_11244_10460com_11244_6231col_11244_10464
2014-09-29T15:05:23Z
urn:hdl:11244/11870
Indonesian Metropolitan Teenagers' Attitude and Behavior Toward Imported Brand Name Apparel
Susan
2014-09-29T15:05:23Z
2014-09-29T15:05:23Z
1999-07-01
text
http://hdl.handle.net/11244/11870
Copyright is held by the author who has granted the Oklahoma State University Library the non-exclusive right to share this material in its institutional repository. Contact Digital Library Services at lib-dls@okstate.edu or 405-744-9161 for the permission policy on the use, reproduction or distribution of this material.
Oklahoma State University
oai:shareok.org:11244/131282019-10-21T04:39:57Zcom_11244_10460com_11244_6231col_11244_10464
2014-10-01T19:56:06Z
urn:hdl:11244/13128
Spatial and Temporal Analysis of Forest and Grassland Changed at the Tallgrass Prairie Perserve
Wethington, Marshall Keith
2014-10-01T19:56:06Z
2014-10-01T19:56:06Z
1994-05-01
text
http://hdl.handle.net/11244/13128
Copyright is held by the author who has granted the Oklahoma State University Library the non-exclusive right to share this material in its institutional repository. Contact Digital Library Services at lib-dls@okstate.edu or 405-744-9161 for the permission policy on the use, reproduction or distribution of this material.
Oklahoma State University
oai:shareok.org:11244/155752019-10-17T18:11:42Zcom_11244_10460com_11244_6231col_11244_10464
2015-08-19T16:05:42Z
urn:hdl:11244/15575
Identification and Comparison of Factors Influencing Oklahoma Cooperative Extension Service Agents to Remain in the Profession
Cox, Charles Bryan
Key, James P.
Terry, Robert
Reisbeck, Robert
2015-08-19T16:05:42Z
2015-08-19T16:05:42Z
1988-05-01
text
http://hdl.handle.net/11244/15575
Copyright is held by the author who has granted the Oklahoma State University Library the non-exclusive right to share this material in its institutional repository. Contact Digital Library Services at lib-dls@okstate.edu or 405-744-9161 for the permission policy on the use, reproduction or distribution of this material.
Oklahoma State University
oai:shareok.org:11244/125542019-10-20T17:13:13Zcom_11244_10460com_11244_6231col_11244_10464
2014-09-29T21:55:44Z
urn:hdl:11244/12554
Readership Survey of the Daily O'collegian at Oklahoma State University
Laotaweesub, Napaporn
2014-09-29T21:55:44Z
2014-09-29T21:55:44Z
1996-12-01
text
http://hdl.handle.net/11244/12554
Copyright is held by the author who has granted the Oklahoma State University Library the non-exclusive right to share this material in its institutional repository. Contact Digital Library Services at lib-dls@okstate.edu or 405-744-9161 for the permission policy on the use, reproduction or distribution of this material.
Oklahoma State University
oai:shareok.org:11244/97852019-10-20T05:43:43Zcom_11244_10460com_11244_6231col_11244_10464
2014-04-16T03:11:51Z
urn:hdl:11244/9785
Relationship of Trust, Parental and Peer Support Relationships, and Health Risk Behaviors in College Students
Reese-Taylor, LaMeshia Sheri
Jacobs, Sue C.
Croff, Julie M.
McGaha-Garnett, Valerie
The scope of this study was limited to students at Oklahoma State University who chose to participate. The purpose was to examine the relationship of trust, parental and peer support relationships, and health risk behaviors. Participants answered questions about 4 areas of high risk health behaviors, trust, and support. A sample of 172 students (one-third graduate students) volunteered to participate. Pearson correlations were used to examine the associations among trust, the perceived adequacy of support received from parents and peers, and engagement in high risk health behaviors. In additional analyses, Independent sample t-tests and ANOVAs were used to examine differences in trust and perceived support between those who engaged in high risk behaviors and those who did not for the total sample and undergraduates only. There was a positive relationship between trust and the adequacy of perceived support received from family and friends. There was not a relationship between engagement in high risk health behaviors and trust or adequacy of perceived support. However, for undergraduate students, there was a significant difference between those who engaged in heavy episodic drinking and those who did not and perceived support from family and friends.
2014-04-16T03:11:51Z
2014-04-16T03:11:51Z
2012-07-01
text
http://hdl.handle.net/11244/9785
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Oklahoma State University
oai:shareok.org:11244/168302019-10-20T23:37:02Zcom_11244_10460com_11244_6231col_11244_10464
2015-08-27T16:44:37Z
urn:hdl:11244/16830
Reservoir Release Water Quality Improvement by Localized Destratification
Robinson, Kerry Mark
Garton, James E.
Wilhm, Jerry
Rice, Charles
Moretti, Petter M.
2015-08-27T16:44:37Z
2015-08-27T16:44:37Z
1981-05-01
text
http://hdl.handle.net/11244/16830
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Oklahoma State University
oai:shareok.org:11244/3163192019-10-15T09:42:59Zcom_11244_10460com_11244_6231col_11244_10464
2018-12-11T22:10:57Z
urn:hdl:11244/316319
Experimental Investigation of Drag Reduction on Automobiles with an Inflatable Boat-Tail
McNamara, Kathleen
Jacob, Jamey Darin
Good, James Keith
Kalkan, Ali Kaan
There is a growing demand for higher efficiency and more environmentally friendly vehicles, including better fuel economy, reduction in wind noise level, and greater vehicle performance and dynamic stability. These factors vary with aerodynamic performance. Overall, aerodynamic drag contributes to as much as 60% of a vehicles fuel consumption, motivating vehicle manufacturers to investigate new drag reduction applications. When streamlining a vehicle for aerodynamic performance, one method is by boat-tailing, or rear end tapering. This study includes an investigation of the overall potential of a lightweight yet rigid, inflatable drag reduction device, applied to a motor vehicle. Based on original concepts proposed by Toyota Research Institute North American (TRINA), combined with past research of inflatable technology, an inflatable drag reduction device is designed, manufactured, and tested. Peel strength of adhesive bonds testing provides detailed results of proper heat-sealable fabric utilization, and preferred materials are selected for inflatable models. Through multiple concept considerations and varying design stages ergonomic boat-tail designs evolve, as does construction, and manufacturing details are included. The inflatable boat-tail as a drag reduction device is examined through wind tunnel testing at Reynolds numbers O(10^5) by 2D wake survey and conservation of momentum theory, and multiple system designs are compared. Results show 10-80% decreased drag coefficients as a function of varying boat-tail construction compared to a baseline model. Wake survey is also performed at multiple heights along boat-tail sections, and 3D effects are investigated. Further investigations include wake survey velocity profiles as a function of angle of attack. Standard deviation and velocity fluctuations are compared for individual systems, and results are discussed.
2018-12-11T22:10:57Z
2018-12-11T22:10:57Z
2018-05-01
https://hdl.handle.net/11244/316319
Copyright is held by the author who has granted the Oklahoma State University Library the non-exclusive right to share this material in its institutional repository. Contact Digital Library Services at lib-dls@okstate.edu or 405-744-9161 for the permission policy on the use, reproduction or distribution of this material.
oai:shareok.org:11244/92332019-10-18T23:31:14Zcom_11244_10460com_11244_6231col_11244_10464
2014-04-15T22:01:13Z
urn:hdl:11244/9233
Genistein Reduces Production of Proinflammatory Molecules in Human Chondrocytes
Hooshmand-yazdi, Shirin
Arjmandi, Bahram H.
Lucas, Edralin A.
Madihally, Sundar V.
Previously, we reported that cartilage is an estrogen receptor (ER) positive tissue and that mRNA levels of ER increase in postmenopausal women with osteoarthritis. Based on our findings and those of other investigators, we hypothesized that local rather than circulating estrogen levels negatively affect chondrocyte metabolism and that selective estrogen receptor modulators (SERM) augment cartilage health. To test the latter part of our hypothesis, we explored the role of genistein, a naturally occurring SERM with high affinity to bind ER, in inhibiting the lipopolysaccharide (LPS)-stimulated cyclooxygenase (COX)-2 but not COX-1 in human chondrocytes (HCH). Cells (PromoCell, Germany) were treated with three levels of genistein (0, 50, and 100 ?M). After one hour, the genistein-treated cells were stimulated by one μg/mL LPS for six hours. Cells were then harvested and the cytosolic fraction was isolated for assessing COX-1 and COX-2 protein levels using Western blot technique. Nitric oxide (NO), interleukin-I Beta (IL-1?), and YKL-40 productions were also measured in cell culture supernatants. NO, and IL-1? were measured as markers of inflammation and YKL-40 was assessed as a marker of cartilage catabolism. Interestingly, LG50 was more effective in reducing NO production than LG100 (42% vs. 28%) in comparison with LPS-treatred control cells. Genistein had no significant effect on either YKL-40 or IL-1? levels. Our data indicate that the LPS-stimulated increases in COX-2 protein level and NO in supernatant are reduced by pretreatment of genistein, whereas COX-1 protein level is not affected by genistein.
2014-04-15T22:01:13Z
2014-04-15T22:01:13Z
2006-05-01
text
http://hdl.handle.net/11244/9233
Copyright is held by the author who has granted the Oklahoma State University Library the non-exclusive right to share this material in its institutional repository. Contact Digital Library Services at lib-dls@okstate.edu or 405-744-9161 for the permission policy on the use, reproduction or distribution of this material.
Oklahoma State University
oai:shareok.org:11244/125212019-10-16T21:03:16Zcom_11244_10460com_11244_6231col_11244_10464
2014-09-29T21:55:22Z
urn:hdl:11244/12521
Evaluanon of Chick Embryo Spinal Motoneuron Cultures for the Study of Neurotoxicity
Guale, Fessessework G.
2014-09-29T21:55:22Z
2014-09-29T21:55:22Z
1996-05-01
text
http://hdl.handle.net/11244/12521
Copyright is held by the author who has granted the Oklahoma State University Library the non-exclusive right to share this material in its institutional repository. Contact Digital Library Services at lib-dls@okstate.edu or 405-744-9161 for the permission policy on the use, reproduction or distribution of this material.
Oklahoma State University
oai:shareok.org:11244/3210042019-10-15T09:36:42Zcom_11244_10460com_11244_6231col_11244_10464
2019-07-19T14:49:26Z
urn:hdl:11244/321004
Single Versus Dual Pesticide Applications for Increasing Oklahoma Winter Wheat Grain Yield and Profitability
Watson, Branden H.
Edwards, Jeff
Hunger, Robert Marvin
Royer, Tom
Marburger, David A.
Foliar fungicides and insecticides can be useful tools in management decisions against fungal diseases and insect pests of winter wheat in Oklahoma, but little is known about multiple applications and tank-mixes of these pesticides. Two studies were conducted across three different locations during the 2016-2017 and 2017-2018 growing seasons, focusing on multiple fungicide treatments and fungicide + insecticide treatments at two different timings, Feekes 6 (jointing) and Feekes 9 (full flag leaf emergence). Two wheat varieties were used in each study, chosen based on susceptibility and resistance to fungal diseases. In the first study which assessed a dual fungicide application approach compared to a single application, results showed that a dual fungicide application can reduce disease levels, protect more yield potential, and provide greater marginal return than a single fungicide application. However, this management practice was highly dependent on variety and location. Due to the timing of disease occurrence in most cases during the course of the study, a single fungicide application was more often profitable than the dual application approach. The second study examined the effect of fungicide + insecticide tank-mix applications compared to each pesticide applied alone at both growth stages. Results for this study showed that a fungicide + insecticide application can provide greater yield than each pesticide applied alone. However, this result was highly dependent on the year, location, and timing when fungal diseases and/or insects were present, and it only occurred at the Feekes 6 application timing. Greater marginal return from a fungicide + insecticide application compared to each pesticide applied alone was also dependent on year and location. This greater marginal return from the fungicide + insecticide application was observed at both Feekes 6 and Feekes 9 but occurred at the Feekes 6 application timing the majority of the time. Based on the results of these two studies, scouting for fungal diseases and insects and understanding wheat variety susceptibility to fungal diseases should dictate whether multiple fungicide applications and/or fungicide + insecticide tank-mixes should be used instead of making prophylactic applications in Oklahoma.
2019-07-19T14:49:26Z
2019-07-19T14:49:26Z
2018-12-01
https://hdl.handle.net/11244/321004
Copyright is held by the author who has granted the Oklahoma State University Library the non-exclusive right to share this material in its institutional repository. Contact Digital Library Services at lib-dls@okstate.edu or 405-744-9161 for the permission policy on the use, reproduction or distribution of this material.
oai:shareok.org:11244/241642019-10-15T13:21:33Zcom_11244_10460com_11244_6231col_11244_10464
2016-01-08T21:46:55Z
urn:hdl:11244/24164
Studies on the Hydrolytically-Assisted Extended Aeration Process and on Pre-Hydrolysis of Sludge in Aerobic Digestion Processes
Saidi, Homayoon
Gaudy, A. F., Jr.
Kincannon, Don F.
Sherrard, J. H.
2016-01-08T21:46:55Z
2016-01-08T21:46:55Z
1974-05-01
text
http://hdl.handle.net/11244/24164
Copyright is held by the author who has granted the Oklahoma State University Library the non-exclusive right to share this material in its institutional repository. Contact Digital Library Services at lib-dls@okstate.edu or 405-744-9161 for the permission policy on the use, reproduction or distribution of this material.
Oklahoma State University
oai:shareok.org:11244/490852019-10-15T13:24:45Zcom_11244_10460com_11244_6231col_11244_10464
2017-02-22T22:14:58Z
urn:hdl:11244/49085
Larval Hemolymph Proteins and Physiological Role of Prophenoloxidases in Anopheles Gambiae
He, Xuesong
Jiang, Haobo
Noden, Bruce
Soulages, Jos� Luis
The African mosquito Anopheles gambiae is one of the major vectors for human malaria. Understanding its immune system may provide new means for disrupting the disease transmission. While the Drosophila melanogaster and Manduca sexta immune systems are well studied, most components ofthe mosquito system remain to be examined. Insect hemolymph contains important factors for humoral and cellular defense responses as well as immune signal transduction, including pattern recognition receptors, serine proteases, serpins, antimicrobial peptides. In the present study, we collected hemolymph samples from water- and E. coli-pricked A. gambiae larvae. The samples were separated on SDS-PAGE and subjected to LC-MS/MS analysis. The detected peptides were searched against A. gambiae proteins from VectorBase. We have identified a total of 1,756 proteins.Most of the abundant proteins contain putative signal peptides. Twenty-five most abundant proteins represent over half of the total protein amount, 109 proteins are up-regulated, 49 are down-regulated, and 235 are considered to be defense-related. After examining the protein distribution in the gel slices, we found that more abundant proteins tend to exist in more of the slices. We also obtained evidence for proteolysis, post-translational modification, serpin-protease complex formation, and high Mr immune complex formation based on the distribution data. In addition to the proteomic study, we generated monoclonal antibodies against prophenoloxidases PPO2 and PPO7 and found that PPO2 is presented in the adult hemolymph. Lastly, we tried to knockdown PPO gene expression in female adults by injecting double-stranded RNA and examined their survival following an E. coli challenge. No significant difference was observed between the test and control groups.
2017-02-22T22:14:58Z
2017-02-22T22:14:58Z
2016-05-01
http://hdl.handle.net/11244/49085
Copyright is held by the author who has granted the Oklahoma State University Library the non-exclusive right to share this material in its institutional repository. Contact Digital Library Services at lib-dls@okstate.edu or 405-744-9161 for the permission policy on the use, reproduction or distribution of this material.
oai:shareok.org:11244/439472019-10-17T06:02:50Zcom_11244_10460com_11244_6231col_11244_10464
2016-07-14T14:13:35Z
urn:hdl:11244/43947
Equilibria and Rates in the Carbonation of Alcoholic Alkali
Woodside, John A.
Dermer, O. C.
Heston, B. O.
Smith, Otto M.
2016-07-14T14:13:35Z
2016-07-14T14:13:35Z
1942
text
http://hdl.handle.net/11244/43947
Copyright is held by the author who has granted the Oklahoma State University Library the non-exclusive right to share this material in its institutional repository. Contact Digital Library Services at lib-dls@okstate.edu or 405-744-9161 for the permission policy on the use, reproduction or distribution of this material.
oai:shareok.org:11244/438222019-10-16T20:24:37Zcom_11244_10460com_11244_6231col_11244_10464
2016-07-07T20:15:16Z
urn:hdl:11244/43822
Comparison of the Relative Grain Yields of Waxy and Starchy Genotypes Within 9 Strains of Sorghum
Peater, James D.
Jones, Melvin
Murphy, S.
Schlehuber, A. M.
2016-07-07T20:15:16Z
2016-07-07T20:15:16Z
1947
text
http://hdl.handle.net/11244/43822
Copyright is held by the author who has granted the Oklahoma State University Library the non-exclusive right to share this material in its institutional repository. Contact Digital Library Services at lib-dls@okstate.edu or 405-744-9161 for the permission policy on the use, reproduction or distribution of this material.
oai:shareok.org:11244/315892019-10-21T00:24:34Zcom_11244_10460com_11244_6231col_11244_10464
2016-02-24T16:53:51Z
urn:hdl:11244/31589
Isotope Effect in the Alkaline Hydrolysis of Methyl P-methyl-t- Benzoate
Taylor, Ray Dean
Hodnett, E. M.
2016-02-24T16:53:51Z
2016-02-24T16:53:51Z
1958-08-01
text
http://hdl.handle.net/11244/31589
Copyright is held by the author who has granted the Oklahoma State University Library the non-exclusive right to share this material in its institutional repository. Contact Digital Library Services at lib-dls@okstate.edu or 405-744-9161 for the permission policy on the use, reproduction or distribution of this material.
Oklahoma State University
oai:shareok.org:11244/422052019-10-17T15:35:10Zcom_11244_10460com_11244_6231col_11244_10464
2016-06-20T14:35:48Z
urn:hdl:11244/42205
Enid Booth Legend
Banks, Helen Jo
Fischer, LeRoy H.
Mahnken, Norbert R.
Lewis, George E.
2016-06-20T14:35:48Z
2016-06-20T14:35:48Z
1953-01-01
text
http://hdl.handle.net/11244/42205
Copyright is held by the author who has granted the Oklahoma State University Library the non-exclusive right to share this material in its institutional repository. Contact Digital Library Services at lib-dls@okstate.edu or 405-744-9161 for the permission policy on the use, reproduction or distribution of this material.
oai:shareok.org:11244/130262019-10-21T02:51:29Zcom_11244_10460com_11244_6231col_11244_10464
2014-10-01T19:55:23Z
urn:hdl:11244/13026
Performance Analysis of a Controller Area Network Subject to Asymmetric Traffic Loads
Leu, Tsao-Jean
2014-10-01T19:55:23Z
2014-10-01T19:55:23Z
1994-07-01
text
http://hdl.handle.net/11244/13026
Copyright is held by the author who has granted the Oklahoma State University Library the non-exclusive right to share this material in its institutional repository. Contact Digital Library Services at lib-dls@okstate.edu or 405-744-9161 for the permission policy on the use, reproduction or distribution of this material.
Oklahoma State University
oai:shareok.org:11244/264902019-10-17T16:15:37Zcom_11244_10460com_11244_6231col_11244_10464
2016-01-27T15:50:12Z
urn:hdl:11244/26490
Some Sources of Variation Associated with Birth Weight in Beef Cattle and Estimates of Heritability of Birth Weight and Correlations Between Birth and Weaning Weight
Turvey, W. Allen
Whiteman, Joe
Omtvedt, Irvin T.
2016-01-27T15:50:12Z
2016-01-27T15:50:12Z
1967-05-01
text
http://hdl.handle.net/11244/26490
Copyright is held by the author who has granted the Oklahoma State University Library the non-exclusive right to share this material in its institutional repository. Contact Digital Library Services at lib-dls@okstate.edu or 405-744-9161 for the permission policy on the use, reproduction or distribution of this material.
Oklahoma State University
oai:shareok.org:11244/489652019-10-15T10:11:53Zcom_11244_10460com_11244_6231col_11244_10464
2017-02-22T22:12:24Z
urn:hdl:11244/48965
Developing a Gluten, Soy, Dairy, and Nut Free Energy Bar with a Suggested Haccp Plan
Altoaimi, Bayan
Bowser, Timothy
Mcglynn, William
Payton, Mark
The purpose of energy bars is to provide people with energy to help them perform various tasks in their lives in a better way. There are several types of energy bars in the market nowadays; however, there are some people who are allergic to gluten, nut, soy, and dairy and, unfortunately, there is no energy bar that can suit their needs. As a result, this study attempted to develop an energy bar that is gluten, nut, soy, and dairy free. A comparison between the developed energy bar in this study and a commercial bar was made. Sixty-six panelists were recruited from students, faculty and staff on contract of Oklahoma State University and were voluntarily participated in the study. They were asked to taste the two samples and evaluate eight important attributes including stickiness to touch, color, chewiness, flavor, sweetness, adhesiveness to teeth, texture and overall acceptance using a nine-point hedonic scale. Proximate analysis of both samples was determined. A suggested HACCP plan for industries intend to produce this energy bar was proposed. Results indicated that there was a significance difference (p<0.05) in chewiness, adhesiveness to teeth, and stickiness between the developed energy bar and the commercial bar. No difference was found in the remaining quality attributes. The developed energy bar was higher in carbohydrate and moisture and lower in protein, ash, and fat comparing to the commercial bar. In addition, the HACCP plan had one CCP that could be overcome using an X-ray detection system.
2017-02-22T22:12:24Z
2017-02-22T22:12:24Z
2015-12-01
http://hdl.handle.net/11244/48965
Copyright is held by the author who has granted the Oklahoma State University Library the non-exclusive right to share this material in its institutional repository. Contact Digital Library Services at lib-dls@okstate.edu or 405-744-9161 for the permission policy on the use, reproduction or distribution of this material.
oai:shareok.org:11244/320542019-10-15T16:10:26Zcom_11244_10460com_11244_6231col_11244_10464
2016-03-02T18:31:22Z
urn:hdl:11244/32054
Relationship of High School Students' Knowledge of Child Development to Potential for Child Abuse
Demarco, Toni Jean
Fulton, Arlene M.
Anderson, Sara Lee
Castle, Kathryn
2016-03-02T18:31:22Z
2016-03-02T18:31:22Z
1987-12-01
text
http://hdl.handle.net/11244/32054
Copyright is held by the author who has granted the Oklahoma State University Library the non-exclusive right to share this material in its institutional repository. Contact Digital Library Services at lib-dls@okstate.edu or 405-744-9161 for the permission policy on the use, reproduction or distribution of this material.
Oklahoma State University
oai:shareok.org:11244/175692019-10-15T22:06:37Zcom_11244_10460com_11244_6231col_11244_10464
2015-09-08T21:40:04Z
urn:hdl:11244/17569
Maintenance of an Authoritarian Regime: the Case of Mexico
Wells, Robert Alexander
Rich, Clifford L.
Hanson, Bertil L.
Sare, Harold V.
2015-09-08T21:40:04Z
2015-09-08T21:40:04Z
1980-12-01
text
http://hdl.handle.net/11244/17569
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Oklahoma State University
oai:shareok.org:11244/441802019-10-18T17:34:20Zcom_11244_10460com_11244_6231col_11244_10464
2016-07-19T21:47:09Z
urn:hdl:11244/44180
Legal and Accounting Problems of a School District in Oklahoma
Meyers, Philip T.
McCowen, George B.
2016-07-19T21:47:09Z
2016-07-19T21:47:09Z
1951
text
http://hdl.handle.net/11244/44180
Copyright is held by the author who has granted the Oklahoma State University Library the non-exclusive right to share this material in its institutional repository. Contact Digital Library Services at lib-dls@okstate.edu or 405-744-9161 for the permission policy on the use, reproduction or distribution of this material.
oai:shareok.org:11244/97532019-10-20T04:50:41Zcom_11244_10460com_11244_6231col_11244_10464
2014-04-16T03:11:35Z
urn:hdl:11244/9753
Evaluation of a Position-specific Task in Ncaa Division I Linemen
Hester, Garrett
Jacobson, Bert H.
Smith, Doug B.
O'Brien, Matthew S.
It is the responsibility of the strength and conditioning professional to implement quality training programs and properly evaluate each athlete's physical performance. It is essential that strength and conditioning professionals have access to an evaluative tool that provides a practical, position-specific assessment of playing ability in collegiate linemen. The purpose of this study was two-fold: To compare the performance of a position-specific task on the MAXX Football Sled Device (MFSD) between NCAA Division I offensive and defensive linemen. Also, to investigate any associations among selected strength and power variables with performance on the MFSD in NCAA Division I offensive and defensive linemen. Twenty-six NCAA Division I offensive (n=12) and defensive linemen (n=14) (age 20.11 1.49yrs) performed ten "fire-and-drive" repetitions on the MFSD. Upon an auditory signal rendered from the MFSD, subjects exploded in to the breast plate region of the dummy as forcefully and rapidly as possible. After each repetition subjects reset themselves in a three point stance. Timing between repetitions was an automatically randomized duration of 6 to 10 sec. The MFSD measured average force (AVGF) across the ten trials and movement time (MT), the time from the auditory signal to initial contact on the dummy, for each of the ten repetitions. Secondary data including 1 RM of the squat, bench press, and power clean, along with vertical jump, 10 yd. sprint, 40 yd. sprint, and body fat percentage were gathered from the team's strength and conditioning staff. Defensive linemen were found to produce significantly lower movement times when compared to offensive linemen (p = 0.032). There were no significant relationships found between the dependent variables gathered from the MFSD and any independent variables. Test-retest reliability demonstrated strong reliability with the device for both AVGF (ICC = .813; SEM = 93.4) and MT (ICC = .828; SEM = .022). Results of this study indicate that defensive linemen accelerate out of the three point stance quicker than offensive linemen. Further exploration for the purpose of finding exercises that correlate with a position-specific task in these athletes is warranted.
2014-04-16T03:11:35Z
2014-04-16T03:11:35Z
2012-12-01
text
http://hdl.handle.net/11244/9753
Copyright is held by the author who has granted the Oklahoma State University Library the non-exclusive right to share this material in its institutional repository. Contact Digital Library Services at lib-dls@okstate.edu or 405-744-9161 for the permission policy on the use, reproduction or distribution of this material.
Oklahoma State University
oai:shareok.org:11244/307032019-10-18T20:42:06Zcom_11244_10460com_11244_6231col_11244_10464
2016-02-17T21:49:56Z
urn:hdl:11244/30703
Psychological Investigation of Stelazine as an Anti-psychotic Agent for Chronic Psychotic Patients
Harber, J. Newton, Jr.
Griffiths, William J., Jr.
Brobst, Harry K.
2016-02-17T21:49:56Z
2016-02-17T21:49:56Z
1961-05-28
text
http://hdl.handle.net/11244/30703
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Oklahoma State University
oai:shareok.org:11244/237212019-10-17T18:14:25Zcom_11244_10460com_11244_6231col_11244_10464
2016-01-08T20:15:11Z
urn:hdl:11244/23721
Development of a Roller-Brush Pesticide Applicator
Tripp, Gary Warren
Roth, Lawrence O.
Clary, B. L.
2016-01-08T20:15:11Z
2016-01-08T20:15:11Z
1972-05-01
text
http://hdl.handle.net/11244/23721
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Oklahoma State University
oai:shareok.org:11244/150672019-10-16T21:49:21Zcom_11244_10460com_11244_6231col_11244_10464
2015-06-17T20:07:30Z
urn:hdl:11244/15067
Mercury Contamination in Freshwater Turtles of Eastern Oklahoma: Evaluation of Non-destructive Sampling Techniques
Powell, Alisha L.
Belden, Jason B.
Bidwell, Joseph R.
Fox, Stanley
Recent studies in Oklahoma have found levels of mercury (Hg) contamination in fish that exceed safe consumption limits in several lakes. This study investigates the degree of Hg pollution in aquatic turtle species of Oklahoma that are used most commonly for human consumption. Turtles have been used as monitors of chemical contaminants in aquatic environments in both freshwater and marine habitats routinely. These studies are often complicated by the requirement to sacrifice long–lived and slowly reproducing species. A need for a nonlethal routine monitoring technique has been recognized due to a decline in turtle populations. Spiny softshell (Apalone spinifera), common snapping turtle (Chelydra serpentina), and red eared slider (Trachemys scripta) are the most commonly harvested turtles in Oklahoma and thus the indicator species chosen for analysis. Multiple tissue types (muscle, liver, claw, and scute) were collected from 72 turtles in eastern Oklahoma during the summers of 2010 and 2011 from 10 water bodies. Softshells had the highest Hg concentrations (0.04–0.72 mg kg−1), followed by snapping turtles (0.03–0.30 mg kg−1) and red eared sliders (0.01–0.20 mg kg−1). Based on the USEPA food consumption guidelines, seven of the ten sites had average Hg concentrations warranting consumption limits for at least one species. Average muscle Hg concentrations among sites were significantly different (p<0.01). No significant relationships were found between Hg burden and size, sex, or age. Liver/muscle ratios indicated current contamination. In addition, claw and scute were removed from each turtle to test the validity of using non–destructive (external) tissues as an alternative to lethal/destructive sampling of muscle and liver. Claw was the best overall predictor for muscle Hg burdens when comparing across species (R2=0.79) with similar slopes between hard and softshell turtles (slopes=0.087 and 0.099). Scute was not as reliable when all species were combined (R2=0.41). However, when turtles were separated between hard and softshelled species, relationships between Hg concentrations in scute correlated well with concentrations found in muscle (R2=0.84 and 0.83). Continuous monitoring programs are recommended to further protect human health and to track changes in contamination levels. These programs can be completed using the non–destructive tissue techniques and the corresponding linear regression models formulated here.
2015-06-17T20:07:30Z
2015-06-17T20:07:30Z
2014-05-01
text
http://hdl.handle.net/11244/15067
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Oklahoma State University
oai:shareok.org:11244/245372019-10-17T17:29:50Zcom_11244_10460com_11244_6231col_11244_10464
2016-01-12T16:23:44Z
urn:hdl:11244/24537
Space Saving Design for Small Apartments in Taiwan
Cheng, Lan-Ling
Stewart, K. Kay
Salmon, Christine
Rohrs, Richard C.
2016-01-12T16:23:44Z
2016-01-12T16:23:44Z
1980-12-01
text
http://hdl.handle.net/11244/24537
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Oklahoma State University
oai:shareok.org:11244/165452019-10-20T14:30:26Zcom_11244_10460com_11244_6231col_11244_10464
2015-08-27T16:25:44Z
urn:hdl:11244/16545
Oscar Ameringer and American Socialism
Hazlett, O. James
Hale, Douglas
Agnew, Theodore L.
Jewsbury, George F.
This study analyzes the ideology of Oscar Ameringer, one of the Midwest's noted socialists. While the immediate goal of the study is to determine whether Ameringer fits into a left-wing category instead of a right-wing one, it also provides an opportunity to view American radicalism from the perspective of a German immigrant who devoted his life to bringing about socialism in the -United States. The nature of radicalism in the West remains little studied, and Ameringer's perspective is another view from which to understand it better. Also Ameringer continued to view American radicalism from a European viewpoint, which added a different perspective than many of his colleagues.
2015-08-27T16:25:44Z
2015-08-27T16:25:44Z
1982-07-01
text
http://hdl.handle.net/11244/16545
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Oklahoma State University
oai:shareok.org:11244/96842019-10-20T02:27:59Zcom_11244_10460com_11244_6231col_11244_10464
2014-04-16T03:08:51Z
urn:hdl:11244/9684
Analizing Risk in the Restaurant Industry
Ceschini, Silvio
Kim, Woody
Jerrold, Leong
Ryan Bill
The objectives of the study are twofold. It first aims to examine whether systematic risk is influenced and predicted by certain financial variables in the overall U.S. restaurant industry, and it sets out to determine which variables better explain the systematic risk. Second, it intends to investigate how those financial variables affect the systematic risk with regards to the quick-service and the full-service segments. The financial variables utilized were profitability, leverage, efficiency, liquidity, growth, and size. For the overall restaurant industry, profitability was found to be the most significant variable and negatively related to systematic risk. The second significant variable was leverage, positively related to systematic risk. The third significant variable was liquidity; it was positively related to systematic risk. By comparing the quick and full-service segments, profitability was statistically significant in both segments. Leverage was found to be significant in the quick-service segment.
2014-04-16T03:08:51Z
2014-04-16T03:08:51Z
2005-05-01
text
http://hdl.handle.net/11244/9684
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Oklahoma State University
oai:shareok.org:11244/451842019-10-20T17:28:32Zcom_11244_10460com_11244_6231col_11244_10464
2016-09-29T18:35:46Z
urn:hdl:11244/45184
Aspiring Entrepreneurs from Kenya, South Africa, and Uganda: New Media Use and Cultural Perceptions
Maroney, Brentney
Cartmell, Dwayne
Sitton, Shelly
Edwards, Craig
The population for this study was the 12 emerging entrepreneurs from the countries of Kenya, South Africa and Uganda who were part of an Entrepreneur Fellows� two-way exchange program. The study assessed perceptions of the Entrepreneur Fellows� regarding new media platforms prior to the program, following the program, the culture of the United States, the benefits and challenges of participating in an international internship/job shadowing experience, and the training experiences that resonated with the Fellows� regarding their professional roles. A mixed methods analysis was used to examine the phenomenon prior to the program and the post program interview. Based on the questionnaire, the Fellows� preferred Facebook and Pinterest the most, but the Fellows had never heard of the Pinterest and Flickr platforms. Based on the interviews, the Fellows� gained a better understanding of the possibilities of new media outlets but faced the challenges of cost, as well as availability and lack of knowledge in their enterprises. While in the United States, the Fellows had an overall positive opinion of the program and were grateful for their internship placements. The Fellows� traveled back to Africa empowered by the project with beliefs they could make a difference in their countries, especially in regard to empowering aspiring entrepreneurs for economic success.
2016-09-29T18:35:46Z
2016-09-29T18:35:46Z
2015-05-01
text
http://hdl.handle.net/11244/45184
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oai:shareok.org:11244/117132019-10-18T19:38:42Zcom_11244_10460com_11244_6231col_11244_10464
2014-09-29T15:03:40Z
urn:hdl:11244/11713
Economic Comparison of Ostrich and Beef Cattle Production on Pasture in Oklahoma
Crider, Shawna Michelle
2014-09-29T15:03:40Z
2014-09-29T15:03:40Z
1999-05-01
text
http://hdl.handle.net/11244/11713
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Oklahoma State University
oai:shareok.org:11244/3003142019-10-15T09:09:39Zcom_11244_10460com_11244_6231col_11244_10464
2018-06-25T16:31:26Z
urn:hdl:11244/300314
Acoustic and Netting Surveys of Western Ozark Highlands Bats with Habitat Suitability Models for Three Threatened and Endangered Species
Ritchie, Anna Rachel
McBee, Karen
Papes, Monica
Bolek, Matthew
Bats in the United States and Canada are experiencing major population declines because of white-nose syndrome (WNS), a fungal disease that kills bats hibernating in caves. First discovered in New York in 2006, WNS has rapidly spread south and west across the United States. Camp Gruber Training Center (CGTC) is a United States National Guard training facility in Muskogee County, Oklahoma. Muskogee County is adjacent to three counties that are suspect for WNS infection as of 2017. I performed acoustic and mist net surveys at CGTC to determine composition of the chiropteran community of the area and if bats in Muskogee County have been exposed to WNS by looking for characteristic damage on wing membranes. Acoustic and mist net surveys determined that the bat community of CGTC is likely dominated by non-endangered species that have not suffered high mortality from white-nose syndrome (Nycticeius humeralis and Lasiurus borealis). There are at least 2 species that occur rarely within CGTC that are federally endangered (Myotis grisescens and Myotis sodalis) that, along with the non-endangered Perimyotis subflavus, have been known to contract WNS. I found no evidence of WNS symptoms on the bats of CGTC as of summer 2017. I used maximum entropy species distribution modeling (Maxent) to create habitat suitability models for three species that occur in the Ozark Highlands around CGTC, Myotis grisescens (endangered), M. septentrionalis (threatened), and M. sodalis (endangered). These models help explain the community composition of CGTC by revealing habitat preferences of these species and may suggest future range expansions or possible locations of unknown colonies for all three species. I also found that M. septentrionalis and M. sodalis are highly similar in their habitat preferences, supporting the United States Fish and Wildlife Service decision to combine summer survey guidelines for these species.
2018-06-25T16:31:26Z
2018-06-25T16:31:26Z
2017-12-01
https://hdl.handle.net/11244/300314
Copyright is held by the author who has granted the Oklahoma State University Library the non-exclusive right to share this material in its institutional repository. Contact Digital Library Services at lib-dls@okstate.edu or 405-744-9161 for the permission policy on the use, reproduction or distribution of this material.
oai:shareok.org:11244/155552019-10-17T16:47:48Zcom_11244_10460com_11244_6231col_11244_10464
2015-08-19T16:05:33Z
urn:hdl:11244/15555
Importance of Agriculture in the Development Process: an Agricultural Model for Tunisia
Boubakri, Narjess
Applegate, Michael
Edgmand, Michael R.
A model for the Tunisian agriculture was developed. validated and then tested for different options and actions that could be undertaken in this sector. This model was conceived to serve as a basis for a close analysis of the sector and could serve as a starting point for the olanners in adapting a development model for the agr1culture. especially emphasizing the full use of the available potential and deriving the comparative advantage that best serves the welfare of the community.
2015-08-19T16:05:33Z
2015-08-19T16:05:33Z
1988-05-01
text
http://hdl.handle.net/11244/15555
Copyright is held by the author who has granted the Oklahoma State University Library the non-exclusive right to share this material in its institutional repository. Contact Digital Library Services at lib-dls@okstate.edu or 405-744-9161 for the permission policy on the use, reproduction or distribution of this material.
Oklahoma State University
oai:shareok.org:11244/185562019-10-15T15:05:01Zcom_11244_10460com_11244_6231col_11244_10464
2015-09-23T18:29:29Z
urn:hdl:11244/18556
Metal Promoted Reactions. I. Reactions of 1,2,3-Thiadiazole. II. Oxidation of Oximes by Copper Salts
Dawson, Jeffrey Carl
McKennis, Jeffrey S.
Eisenbraun, E. J.
Hodnett, Ernest M.
2015-09-23T18:29:29Z
2015-09-23T18:29:29Z
1978-07-01
text
http://hdl.handle.net/11244/18556
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Oklahoma State University
oai:shareok.org:11244/261302019-10-15T18:08:14Zcom_11244_10460com_11244_6231col_11244_10464
2016-01-25T22:43:15Z
urn:hdl:11244/26130
Composition of Bile Acids in Bos Taurus, Suidae Sus and Gallus Gallus
Chan, Tak K.
Waller, George R.
Odell, George V.
2016-01-25T22:43:15Z
2016-01-25T22:43:15Z
1968-05-01
text
http://hdl.handle.net/11244/26130
Copyright is held by the author who has granted the Oklahoma State University Library the non-exclusive right to share this material in its institutional repository. Contact Digital Library Services at lib-dls@okstate.edu or 405-744-9161 for the permission policy on the use, reproduction or distribution of this material.
Oklahoma State University
oai:shareok.org:11244/129782019-10-21T02:16:18Zcom_11244_10460com_11244_6231col_11244_10464
2014-10-01T19:54:57Z
urn:hdl:11244/12978
Algorithm to Automatically Detect Structure Symmetry and Apply Symmetry Concepts in Structural Analysis�
El-Mokadem, Khaled M.
2014-10-01T19:54:57Z
2014-10-01T19:54:57Z
1994-12-01
text
http://hdl.handle.net/11244/12978
Copyright is held by the author who has granted the Oklahoma State University Library the non-exclusive right to share this material in its institutional repository. Contact Digital Library Services at lib-dls@okstate.edu or 405-744-9161 for the permission policy on the use, reproduction or distribution of this material.
Oklahoma State University
oai:shareok.org:11244/135372019-10-17T05:14:24Zcom_11244_10460com_11244_6231col_11244_10464
2014-11-03T16:09:05Z
urn:hdl:11244/13537
Comparison of sequential analyses generated from an enlarging data base. a case study in ground water contamination
Powell, Leonard Allen
During my studies of hydrogeology, the question of how much information is truly needed for a dependable analysis of a ground water situation was often brought up. The saying "90% of the information comes from 10% of the data," was presented several times in an almost axiomatical sense. This quote, offered by Dr. Wayne Pettyjohn, served as the basic topic of this thesis. Special thanks go to Dr. Pettyjohn, who served as chairman for my thesis committee. His advice and the data obtained from him made this thesis possible.
2014-11-03T16:09:05Z
2014-11-03T16:09:05Z
1992-05-01
text
http://hdl.handle.net/11244/13537
Copyright is held by the author who has granted the Oklahoma State University Library the non-exclusive right to share this material in its institutional repository. Contact Digital Library Services at lib-dls@okstate.edu or 405-744-9161 for the permission policy on the use, reproduction or distribution of this material.
Oklahoma State University
oai:shareok.org:11244/101602016-12-02T20:56:04Zcom_11244_10460com_11244_6231col_11244_10464
2014-04-17T19:56:31Z
urn:hdl:11244/10160
Assessing the Bond Quality of Pre-Stressing Strands with SCC Using NASP Test
Purkait, Saugata
Russell, Bruce Wayne
Emerson, Robert
Jeong, David
Important research in durability of self consolidating concrete structures dates back to 1980 in Japan. The lack of standardized test procedures, performance data and current design application uncertainty to members made with SCC had limited its acceptance in U.S despite of its increased use in Japan, Canada and Europe. SCC has drawn attention in pre-stressed industry due to benefit in enhancing construction productivity. Despite the interest in SCC and rapid development of SCC technology, its widespread use is restrained somewhat by the material and structural performance concerns, including the issue of bond. This thesis highlights effects of SCC on the bond performance of pre-stressing strands. The Standard Test for Bond (also called the North American Strand Producers Bond Test) was performed to evaluate the effect of 0.5 in strand with various SCC mixtures. Research variables include coarse aggregate content and sizes with a fixed rate of HRWRA and VMA. From these test, the pull out values are used to determine whether SCC causes a change in the bond strength of pre-stressing strand. With this, the effects of SCC proportions on the bond properties can be evaluated.
2014-04-17T19:56:31Z
2014-04-17T19:56:31Z
2008-12-01
text
http://hdl.handle.net/11244/10160
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Oklahoma State University
oai:shareok.org:11244/320112019-10-15T14:02:26Zcom_11244_10460com_11244_6231col_11244_10464
2016-03-02T18:31:02Z
urn:hdl:11244/32011
Interactive Model of a Homogeneous Gaseous Plug Flow Reactor
Achour, Mohsen Hedi
War, Ruth C.
Johannes, Arland H.
Seapan, Mayis
2016-03-02T18:31:02Z
2016-03-02T18:31:02Z
1987-12-01
text
http://hdl.handle.net/11244/32011
Copyright is held by the author who has granted the Oklahoma State University Library the non-exclusive right to share this material in its institutional repository. Contact Digital Library Services at lib-dls@okstate.edu or 405-744-9161 for the permission policy on the use, reproduction or distribution of this material.
Oklahoma State University
oai:shareok.org:11244/101192019-10-18T08:10:04Zcom_11244_10460com_11244_6231col_11244_10464
2014-04-17T19:55:57Z
urn:hdl:11244/10119
Laboratory Investigations of the Mechanisms of Groundwater Seepage Erosion and Piping in Cohesive Soils
Felice, Rachel Gayle
Fox, Garey
Wilson, Glenn
Bulut, Rifat
Seepage and soil piping are two mechanisms that can cause streambank erosion and failure. Groundwater seepage can cause erosion either by undercutting or "pop-out" failure. The objective of the seepage study was to utilize a constant-head soil box packed with sandy loam soils at prescribed bulk densities (1.30-1.70 Mg m-3) and an outflow face at 90. Bulk density controlled the mechanism of seepage erosion/failure. For both soils, tension failures occurred at densities less than 1.60 Mg m-3 and undercutting was observed for densities 1.60 Mg m-3 or greater. Data from experiments was used to calibrate SEEP/W to determine pore-water pressures. SLOPE/W utilized the pore-water pressures to determine stability. SLOPE/W only incorporates pore-water pressure effects in factor of safety calculations; therefore, the model was unsuccessful at predicting a failure. Seepage gradient forces may play a more prominent role in streambank and hillslope instability, and this mechanism should be incorporated into stability models. In addition, soil pipe experiments were conducted and flow and internal erosion data were derived for two soils packed at uniform bulk densities but different initial moisture contents. Soils included were clay loam (Dry Creek) and sandy loam (Cow Creek). Initial gravimetric moisture contents (MC) were 10, 12 and 14% for Dry Creek soil and 8, 12, and 14% for Cow Creek soil. A 1-cm diameter rod created the horizontal pipe. A constant head was maintained; flow rates and sediment concentrations were measured from the pipe outlet. Submerged jet erosion tests (JETs) derived erodibility parameters. Flow rates from the box experiments calibrated the deterministic model. The influence of the initial MC of the packed soil was apparent with some pipes (8% MC) expanding so fast that limited data was collected. The deterministic model estimated equivalent flow rates, but had difficulty matching observed sediment concentrations when pipes rapidly expanded by internal erosion. The submerged JETs predicted similar erodibility coefficients compared to the deterministic model for the more erodible cases (8 and 12% MC), but not for the less erodible cases (14% MC).
2014-04-17T19:55:57Z
2014-04-17T19:55:57Z
2012-12-01
text
http://hdl.handle.net/11244/10119
Copyright is held by the author who has granted the Oklahoma State University Library the non-exclusive right to share this material in its institutional repository. Contact Digital Library Services at lib-dls@okstate.edu or 405-744-9161 for the permission policy on the use, reproduction or distribution of this material.
Oklahoma State University
oai:shareok.org:11244/92732019-10-19T01:15:22Zcom_11244_10460com_11244_6231col_11244_10464
2014-04-15T22:01:33Z
urn:hdl:11244/9273
Evaluation of Catch Kids Club After School Program: a Nutrition and Physical Fitness Intervention for Thrid, Fourth, and Fifth Grade Students
Rumph, Mary Katherine
Hildebrand, Deana
Betts, Nancy M.
Shriver, Lenka Humenikova
The objective of this study was to evaluate the impact of CATCH Kids Club after school which focused on improving nutrition knowledge, attitude, intent, self-efficacy, behavioral capability, and behavior, and also focused on improving physical fitness among third, fourth, and fifth grade students. Additionally, Oklahoma Core Curriculum standardized test scores were evaluated to see if students participating in regular physical activity performed better. Intervention (n = 160) and control (n = 163) school sites were part of the Lawton Public School System. Nutritional knowledge, attitude, intent, self-efficacy, behavioral capability, and behaviors were measured by a questionnaire administered to students. Physical fitness was measured by curl-up, flexed-arm hang, sit and reach, and PACER cardiovascular test using the Cooper Institute's Fitnessgram protocol. Data was collected by the Physical Education, and Wellness Coordinator for the Lawton Public School District and then submitted to Oklahoma State University for analysis. Chi-square goodness-of-fit, one-way ANOVA, and paired t-tests were utilized to evaluate student responses between control and intervention groups at pre and post, and evaluate intervention students' responses from pre to post. Findings of this study indicated students that participated in CATCH Kids Club had improved nutrition knowledge, intent, and behaviors from pre to post intervention. Also, intervention students demonstrated improved cardio endurance from pre to post intervention. Overall, CATCH Kids Club was effective in eliciting positive nutrition and physical activity changes among students.
2014-04-15T22:01:33Z
2014-04-15T22:01:33Z
2011-07-01
text
http://hdl.handle.net/11244/9273
Copyright is held by the author who has granted the Oklahoma State University Library the non-exclusive right to share this material in its institutional repository. Contact Digital Library Services at lib-dls@okstate.edu or 405-744-9161 for the permission policy on the use, reproduction or distribution of this material.
Oklahoma State University
oai:shareok.org:11244/101022019-10-18T07:32:27Zcom_11244_10460com_11244_6231col_11244_10464
2014-04-17T19:55:42Z
urn:hdl:11244/10102
Laboratory Performance Evaluation of SMA in Oklahoma
Asfaw, Natnael Tilahun
Cross, Stephen Allan
Ley, Tyler M.
Gregory, Garry H.
The objective of this study is to determine if SMA mixtures have better rutting performance than S-4 mixes made with the same PG grade of binder. Different SMA and S-4 mixtures were collected from different parts of Oklahoma. All mixtures were made with PG 76-28 asphalt cement. To evaluate the performance properties of the mixtures, samples were made and tested for Hamburg rutting resistance using the Hamburg rut tester. Generally, SMA mixes have been shown to perform better with respect to rutting resistance than S-4 mixes. SMA mixes showed lower average rut depth than S-4 mixes.
2014-04-17T19:55:42Z
2014-04-17T19:55:42Z
2011-07-01
text
http://hdl.handle.net/11244/10102
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Oklahoma State University
oai:shareok.org:11244/342742019-10-15T22:49:54Zcom_11244_10460com_11244_6231col_11244_10464
2016-05-01T19:04:10Z
urn:hdl:11244/34274
Heterogeneity of Error Variances in a Randomized Block Design
Folks, John Leroy
Graybill, Franklin
2016-05-01T19:04:10Z
2016-05-01T19:04:10Z
1955-05-01
text
http://hdl.handle.net/11244/34274
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oai:shareok.org:11244/121582019-10-20T02:35:35Zcom_11244_10460com_11244_6231col_11244_10464
2014-09-29T16:13:15Z
urn:hdl:11244/12158
Water Quality of Coal Creek Tributaries Draining an Eagle-picher Smelter Site Okmulgee County, Oklahoma
Wooten, Larry L.
2014-09-29T16:13:15Z
2014-09-29T16:13:15Z
1998-05-01
text
http://hdl.handle.net/11244/12158
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Oklahoma State University
oai:shareok.org:11244/101282019-10-18T08:21:43Zcom_11244_10460com_11244_6231col_11244_10464
2014-04-17T19:56:03Z
urn:hdl:11244/10128
Investigation of MMFX Reinforcing Steel and the Admixture IPANEX for Use In Bridge Decks
Hisey, Jonathan
Russell, Bruce W.
Bowen, Charles M.
Emerson, Robert N.
The purpose of this study is to evaluate MMFX reinforcing steel and the admixture IPANEX for use in bridge decks. An experimental program was developed to test certain properties of MMFX steel and IPANEX. Fresh and hardened properties of concrete with and without IPANEX were measured. Corrosion testing of MMFX steel, epoxy coated, and uncoated steel was performed in accordance with ASTM G 109. The corrosion cells for test method G 109 contained were cast with three w/cm, three different amounts of calcium chloride, and with and without Ipanex. Material testing of MMFX steel was performed to determine modulus of elasticity, yield strength, ultimate strength, and percent elongation. Cores were also taken from bridge decks cast with and without IPANEX. The cores were tested for chloride permeability in conformance with ASTM C 1202. The cores were also tested for compressive strength. Modulus of elasticity of field cast cylinders containing IPANEX was measured in conformance with ASTM C 469. Uncoated steel was found to corrode at a faster rate than MMFX and epoxy coated steel. It was unable to be determined if MMFX steel offered superior corrosion performance to epoxy coated steel due to the limited amount of data. The modulus of elasticity of MMFX steel was found to be the same as Grade 60 reinforcing steel. The yield strength and ultimate strength was found to be twice that of Grade 60 steel. The chloride permeability testing showed higher chloride permeability for IPANEX concrete compared to concrete cast without IPANEX. The age of the specimens was also determined to be affecting the chloride permeability. The modulus of elasticity of concrete cylinders containing IPANEX was higher than predicted. The compressive strength of concrete cores was found to be lower in concrete cast with IPANEX. Fresh properties of IPANEX concrete were found not differ greatly than non-IPANEX concrete.
2014-04-17T19:56:03Z
2014-04-17T19:56:03Z
2004-05-01
text
http://hdl.handle.net/11244/10128
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Oklahoma State University
oai:shareok.org:11244/3299712021-05-26T05:20:36Zcom_11244_10460com_11244_6231col_11244_10464
2021-05-25T20:42:25Z
urn:hdl:11244/329971
Variability in dietary quality of elementary school lunch menus with changes in National School Lunch Program nutrition standards
Patel, Kajal J.
Joyce, Jill
Amaya, Lauren
Hildebrand, Deana
Objective: There have been numerous changes to the National School Lunch Program (NSLP) nutrition standards over the past 10 years. The Healthy Hunger-Free Kids Act (HHFKA, 2010) presumably improved dietary quality (DQ) of reimbursable school meals from previous standards, while Child Nutrition Program Flexibilities (CNP Flexibilities, 2017) appear to decrease DQ. However, this variability in DQ has not been quantified. Thus, the purpose of this study was to determine differences in nutrient content and DQ between elementary school lunch menus meeting recent NSLP nutrition standards, School Meal Initiatives (SMI, 1995), HHFKA (2012), and CNP Flexibilities (2017), as well as with evidence-based school lunch best practices implemented (BP).
Methods: A base menu, deemed typical by expert opinion, was portioned per three versions of NSLP nutrition standards (SMI, HHFKA, CNP Flexibilities) and BP for elementary schoolchildren, and analyzed for nutrient content and DQ using ESHA Food Processor and The Healthy Eating Index (HEI) 2015. Statistical analyses included one-way ANOVA, Kruskal-Wallis, and Dunnett's test. The level of significance was set at p<0.0083.
Results: The BP menu had significantly higher whole fruit (317%) and whole grain (669%) HEI scores than the SMI menu. The BP and HHFKA menus had higher refined grain (156%) and added sugar (2%) HEI scores than the SMI menu. The SMI menu had lower total vegetable (49-50%) and saturated fat (43-51%) HEI scores compared to all other menus. Results were significant (ps<0.0083).
Conclusions: This study provides important information for guiding future policy towards further improving NSLP nutrition standards in their mission to provide healthy food to children, combatting malnutrition and obesity. Continuing to improve NSLP policy has the potential to impact the health, academic performance, and future of US children through higher DQ school lunches.
Funding Sources: None.
2021-05-25T20:42:25Z
2021-05-25T20:42:25Z
2020-12
https://hdl.handle.net/11244/329971
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oai:shareok.org:11244/245802019-10-16T15:35:31Zcom_11244_10460com_11244_6231col_11244_10464
2016-01-12T16:53:18Z
urn:hdl:11244/24580
Germination of Arrowleaf Clover Seed in Bovine Feces and Characteristics of Phosphorus Fertilized Arrowleaf Clover in a Tallgrass Prairie
Maher, Nancy Kathleen
Wagner, Donald G.
Engle, David M.
McCollum, Foris Theodore, III
2016-01-12T16:53:18Z
2016-01-12T16:53:18Z
1986-12-01
text
http://hdl.handle.net/11244/24580
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Oklahoma State University
oai:shareok.org:11244/163312019-10-16T21:57:43Zcom_11244_10460com_11244_6231col_11244_10464
2015-08-27T16:05:11Z
urn:hdl:11244/16331
Analysis of the Thermal Performance of Earth Covered Roofs Based upon a Formulated Interactive Computer Design Aid
Jones, Charles David
Boyer, Lester L.
Grondzik, Walter
Chamberlain, George
This study is concerned with diurnal heat transfer through earth covered roofs. The primary goals of this thesis are: 1) to gain an understanding of current empirical data and methodologies for calculating heat transfer through earth covered roofs or methodologies that may be applied to this area; 2) to formulate an interactive computer design and analysis aid; and 3) to formulate design guidelines and a quick estimation method for calculating peak diurnal heat transfer.
2015-08-27T16:05:11Z
2015-08-27T16:05:11Z
1983-05-01
text
http://hdl.handle.net/11244/16331
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Oklahoma State University
oai:shareok.org:11244/307052019-10-18T20:43:17Zcom_11244_10460com_11244_6231col_11244_10464
2016-02-17T21:49:56Z
urn:hdl:11244/30705
Factors Influencing the Effect of Systemic Insecticides Applied as Seed Treatments to Grain Sorghum
Hatchett, Jimmy Howell
Walton, R. R.
Henderson, L. M.
Bryan, D. E.
Dorris, T. C.
2016-02-17T21:49:56Z
2016-02-17T21:49:56Z
1961-05-01
text
http://hdl.handle.net/11244/30705
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Oklahoma State University
oai:shareok.org:11244/135072019-10-17T02:43:59Zcom_11244_10460com_11244_6231col_11244_10464
2014-11-03T16:08:22Z
urn:hdl:11244/13507
Paleokarstic features and reservoir characteristics of the Hunton Group in the Anadarko Basin, Oklahoma
Matthews, Felicia Danuser
2014-11-03T16:08:22Z
2014-11-03T16:08:22Z
1992-05-01
text
http://hdl.handle.net/11244/13507
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Oklahoma State University
oai:shareok.org:11244/433232019-10-15T17:57:44Zcom_11244_10460com_11244_6231col_11244_10464
2016-06-30T21:43:21Z
urn:hdl:11244/43323
Inheritance of Seed Size in Sorghum Hybrids
Matlock, Ralph S.
Jones, Melvin D.
Brooks, James
2016-06-30T21:43:21Z
2016-06-30T21:43:21Z
1949
text
http://hdl.handle.net/11244/43323
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oai:shareok.org:11244/311542019-10-16T07:23:18Zcom_11244_10460com_11244_6231col_11244_10464
2016-02-22T16:00:01Z
urn:hdl:11244/31154
Developing an Effective Program for Use of Outlook Information of Oklahoma Farmers
Ward, Houston Everett
Plaxico, James S.
Miller, L. F.
2016-02-22T16:00:01Z
2016-02-22T16:00:01Z
1959-08-01
text
http://hdl.handle.net/11244/31154
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Oklahoma State University
oai:shareok.org:11244/180712019-10-18T14:53:42Zcom_11244_10460com_11244_6231col_11244_10464
2015-09-16T18:21:02Z
urn:hdl:11244/18071
Housing Decisions of Repeat Homebuyers: Emphasis on the Effects of Taxation
Baskin, Judith Fincher
Stewart, K. Kay
Weber, Margaret
Olson, Kent
2015-09-16T18:21:02Z
2015-09-16T18:21:02Z
1979-12-01
text
http://hdl.handle.net/11244/18071
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Oklahoma State University
oai:shareok.org:11244/491232019-10-15T13:36:19Zcom_11244_10460com_11244_6231col_11244_10464
2017-02-22T22:15:54Z
urn:hdl:11244/49123
Consumer Preference of Ground Beef Patties with Varying Percentages of Finely Textured Beef
Neilson, Morgan Marie
Mafi, Gretchen
Vanoverebeke, Deborah
Ramanathan, Ranjith
The goal of this study was to evaluate consumer preferences of ground beef patties with varying levels of Finely Textured Beef. Three treatments were utilized during this study 0% FTB, 15% FTB, and max inclusion FTB. All patties were a final makeup of 81% lean and 19% fat with a variance of +/-1%. The sensory panel was split into two phases. The first phase was conducted using bite-sized portions of each sample (n = 689). The second phase utilized a slider-sized patty (n = 675). There were 90 male and 139 female participants with an average age of 27.8 y. For sensory evaluation of bite-sized pieces, consumers found no difference (P > 0.05) in juiciness, flavor, or overall like. Panelists detected a difference in tenderness (P = 0.02) specifically finding the max inclusion FTB samples to be the most tender. Consumer groups were then split into male and female and further evaluated. Male panelist found no differences in any palatability characteristics (P > 0.05). Female panelists found no difference between treatments for flavor (P > 0.05). However, females detected differences (P < 0.05) in tenderness, juiciness, and overall like. They found max inclusion FTB to be the most tender and juicy. Finally, females rated max inclusion FTB higher for overall like than 15% FTB (P = 0.01), but found no difference between max inclusion and 0% FTB or 0% FTB and 15% FTB. Furthermore, consumer groups were split into student and non-student adults and analyzed. Non-student adults found no differences (P > 0.05) between treatments. Student panelists found a treatment difference (P < 0.05) in tenderness and juiciness. Students found max inclusion FTB to be more tender than 0% FTB (P = 0.02), and no difference between max inclusion and 15% or 0% and 15%. Students also rated, 0% FTB to be the least juicy. In the second phase of the panel, evaluating sliders resulted in no treatment differences (P > 0.05) in any of the palatability traits. When split into male and female or students and non-student adults there were still no differences detected (P > 0.05) between treatments.
2017-02-22T22:15:54Z
2017-02-22T22:15:54Z
2016-05-01
http://hdl.handle.net/11244/49123
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oai:shareok.org:11244/3012032019-10-15T08:43:09Zcom_11244_10460com_11244_6231col_11244_10464
2018-07-16T14:29:11Z
urn:hdl:11244/301203
Origins of Modern Wicca
Schnee, Krista R.
Byrnes, Joseph
Belmonte, Laura
Grubgeld, Elizabeth
2018-07-16T14:29:11Z
2018-07-16T14:29:11Z
2001-12-01
https://hdl.handle.net/11244/301203
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oai:shareok.org:11244/438252019-10-18T04:48:00Zcom_11244_10460com_11244_6231col_11244_10464
2016-07-07T20:15:18Z
urn:hdl:11244/43825
Follow-up Study of Students of Oklahoma Agricultural and Mechanical College Who Received Training in Punch-card Machine Theory and Operation During the Years 1938 to 1946, Inclusive
Robertson, Oliver M. Jr.
Lowery, Robert A.
Reiff, C.K.
Holley, J. Andrew
2016-07-07T20:15:18Z
2016-07-07T20:15:18Z
1947
text
http://hdl.handle.net/11244/43825
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oai:shareok.org:11244/3170702019-10-15T06:40:32Zcom_11244_10460com_11244_6231col_11244_10464
2019-01-12T21:52:02Z
urn:hdl:11244/317070
Analysis of the Economic Life of the Irrigation Water Supply in the Oklahoma Panhandle
Henderson, David Dunn
Mapp, Harry P.
Tweeten, Luther G.
Baquet, Alan E.
2019-01-12T21:52:02Z
2019-01-12T21:52:02Z
1979-12-01
https://hdl.handle.net/11244/317070
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oai:shareok.org:11244/185152019-10-20T04:05:59Zcom_11244_10460com_11244_6231col_11244_10464
2015-09-23T18:29:17Z
urn:hdl:11244/18515
Algorithm for Tant Synthesis and Its Sequential Application
Acken, John Michael
Rowland, James R.
Shreve, Edward L.
Bacon, Charles M.
2015-09-23T18:29:17Z
2015-09-23T18:29:17Z
1978-05-01
text
http://hdl.handle.net/11244/18515
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Oklahoma State University
oai:shareok.org:11244/156312019-10-18T07:25:31Zcom_11244_10460com_11244_6231col_11244_10464
2015-08-19T16:06:07Z
urn:hdl:11244/15631
Development of a Model of Webs Encountering Concave Rollers
Kliewer, Greg Alan
Good, James Keith
Lowery, Richard L.
Young, Gary E.
2015-08-19T16:06:07Z
2015-08-19T16:06:07Z
1988-12-01
text
http://hdl.handle.net/11244/15631
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Oklahoma State University
oai:shareok.org:11244/166162019-10-20T15:59:05Zcom_11244_10460com_11244_6231col_11244_10464
2015-08-27T16:26:14Z
urn:hdl:11244/16616
Economics of International Wheat Transportation Systems Using 1985 Production and Consumption Estimates -- a Linear Programming Approach
Ralls, David Allen
Oehrtman, Robert
Page, Raymon E.
Blakley, Leo V.
2015-08-27T16:26:14Z
2015-08-27T16:26:14Z
1982-07-01
text
http://hdl.handle.net/11244/16616
Copyright is held by the author who has granted the Oklahoma State University Library the non-exclusive right to share this material in its institutional repository. Contact Digital Library Services at lib-dls@okstate.edu or 405-744-9161 for the permission policy on the use, reproduction or distribution of this material.
Oklahoma State University
oai:shareok.org:11244/119492019-10-19T18:30:15Zcom_11244_10460com_11244_6231col_11244_10464
2014-09-29T16:10:58Z
urn:hdl:11244/11949
Geographical Analysis of the 1993 NCAA Graduation Rates
Clapp, Shari L.
2014-09-29T16:10:58Z
2014-09-29T16:10:58Z
1998-07-01
text
http://hdl.handle.net/11244/11949
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Oklahoma State University
oai:shareok.org:11244/422182019-10-17T16:21:45Zcom_11244_10460com_11244_6231col_11244_10464
2016-06-20T14:35:56Z
urn:hdl:11244/42218
Vegetation of the Wichita Mountains Wildlife Refuge
Diehl, Stanley Gregg
Featherly, H. I.
Hansen, W. W.
Ikenberry, G. J.
2016-06-20T14:35:56Z
2016-06-20T14:35:56Z
1953-01-01
text
http://hdl.handle.net/11244/42218
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oai:shareok.org:11244/196282019-10-16T18:55:24Zcom_11244_10460com_11244_6231col_11244_10464
2015-10-14T21:37:39Z
urn:hdl:11244/19628
Comparison of Adaptive and Maladaptive Institutionalized Educable Retarded Children's Responses to Direct and Indirect Social Reinforcement
Painton, Robert Hollis
Weiner, Elliot A.
Caldwell, H. Stephen
Schlottman, Robert S.
2015-10-14T21:37:39Z
2015-10-14T21:37:39Z
1976-05-01
text
http://hdl.handle.net/11244/19628
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Oklahoma State University
oai:shareok.org:11244/439942019-10-17T14:45:32Zcom_11244_10460com_11244_6231col_11244_10464
2016-07-14T21:40:21Z
urn:hdl:11244/43994
Effect of Oxalic Acid on Blood Coagulation Time and Growth of Animals
Horton, J. C.
Heller, V. G.
Dermer, O. C.
Smith, Otto M.
2016-07-14T21:40:21Z
2016-07-14T21:40:21Z
1941
text
http://hdl.handle.net/11244/43994
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oai:shareok.org:11244/112652019-10-20T06:17:38Zcom_11244_10460com_11244_6231col_11244_10464
2014-09-25T16:19:18Z
urn:hdl:11244/11265
Modeling and Evaluation of the Interconnection - Driven Repairability for Distributed Embedded Memory Cores on Chip
Jang, Byung-Hyun
2014-09-25T16:19:18Z
2014-09-25T16:19:18Z
2002-12-01
text
http://hdl.handle.net/11244/11265
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Oklahoma State University
oai:shareok.org:11244/326762019-10-18T06:26:19Zcom_11244_10460com_11244_6231col_11244_10464
2016-03-09T20:56:45Z
urn:hdl:11244/32676
Generalizations in Personal and Social Adjustment and Their Effectiveness in the Teaching of Adolescent Girls
Pence, Edna Deann Bean
Ingersoll, Hazel L.
Ware, Girdie
2016-03-09T20:56:45Z
2016-03-09T20:56:45Z
1964-08-01
text
http://hdl.handle.net/11244/32676
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Oklahoma State University
oai:shareok.org:11244/186182019-10-16T05:48:52Zcom_11244_10460com_11244_6231col_11244_10464
2015-09-23T18:29:45Z
urn:hdl:11244/18618
Fitting Problems Encountered by College Women Who Use Commercial Pants Patterns
Kirk, Kathryn Porter
Sisler, Grovalynn
Matern, Lavonne
Callsen, Margaret S.
2015-09-23T18:29:45Z
2015-09-23T18:29:45Z
1978-07-01
text
http://hdl.handle.net/11244/18618
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Oklahoma State University
oai:shareok.org:11244/3311462022-06-27T15:45:04Zcom_11244_10460com_11244_6231col_11244_10464oai:shareok.org:11244/91362019-10-18T18:12:10Zcom_11244_10460com_11244_6231col_11244_10464
2014-04-15T21:51:22Z
urn:hdl:11244/9136
Parenting Style Differences in Overweight versus Non-Overweight Children and the Potential Moderating Effects of Socioeconomic Status and Ethnicity
Rutledge, Julie Marie
Harrist, Amanda
Hubbs-Tait, Laura
Topham, Glade
Kennedy, Tay
This project sought to expand on the limited literature currently available on parenting styles and childhood overweight and to give a better understanding of the environmental correlates of childhood overweight. Since parenting occurs within the greater environment, other factors, including the family's SES and ethnicity, may play a role. Native American mothers were more permissive and their children were more overweight than their European American counterparts. More permissive mothers were more likely to have a child who was at-risk or overweight than less permissive mothers. More authoritarian mothers were less likely to have a child who was at-risk or overweight than less authoritarian mothers. Logistic regression analyses revealed that the interaction between permissive parenting style and SES was positive and significant. Permissiveness predicted higher levels of overweight at high SES and slightly lower level of overweight at low SES and the difference in overweight between these two levels was significant.
2014-04-15T21:51:22Z
2014-04-15T21:51:22Z
2007-05-01
text
http://hdl.handle.net/11244/9136
Copyright is held by the author who has granted the Oklahoma State University Library the non-exclusive right to share this material in its institutional repository. Contact Digital Library Services at lib-dls@okstate.edu or 405-744-9161 for the permission policy on the use, reproduction or distribution of this material.
Oklahoma State University
oai:shareok.org:11244/191132019-10-18T15:50:06Zcom_11244_10460com_11244_6231col_11244_10464
2015-09-29T15:30:13Z
urn:hdl:11244/19113
In Vitro Maturation and Freezability of Bovine Oocytes
Mapes, David Lawrence
Wells, Milton
Turman, E. J.
Bush, L. J.
2015-09-29T15:30:13Z
2015-09-29T15:30:13Z
1977-07-01
text
http://hdl.handle.net/11244/19113
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Oklahoma State University
oai:shareok.org:11244/464742019-10-17T14:39:06Zcom_11244_10460com_11244_6231col_11244_10464
2016-11-16T22:05:14Z
urn:hdl:11244/46474
Progress of Education in Kiowa County During the Nineteen-Hundred Thirties
Beeson, Dewey
Pruett, Haskell
2016-11-16T22:05:14Z
2016-11-16T22:05:14Z
1939
text
http://hdl.handle.net/11244/46474
Copyright is held by the author who has granted the Oklahoma State University Library the non-exclusive right to share this material in its institutional repository. Contact Digital Library Services at lib-dls@okstate.edu or 405-744-9161 for the permission policy on the use, reproduction or distribution of this material.
oai:shareok.org:11244/103022019-10-18T22:45:43Zcom_11244_10460com_11244_6231col_11244_10464
2014-04-17T20:09:31Z
urn:hdl:11244/10302
Mathematical Morphological Processing for Retinal Image Analysis
Zhang, Xin
Diabetic retinopathy is the leading cause of the blindness in the western world. Digital retinal imaging with remote image evaluations is a promising new solution to accurately and precisely stage patients conveniently. The spot lesion detection is the primary step. Based on the mathematical morphology, we discussed two lesion extraction algorithms. To avoid over-segmentation, inner and outer markers are introduced into the marker controlled watershed segmentation method. Gradient image is generated by multi-color channels. Marked lesions can be successfully extracted with clear boundaries. The second method, the adaptive multiscale morphological processing, is a novel procedure to efficiently extract spot lesions in the fundus image. The relative contrast of lesions with the surrounding background is used as criteria, which are similar to the human vision property. Entropy-based thresholding can well distinguish lesions. Post processing removes misclassified areas and produces vascular tree. Both algorithms have been tested in the Clemson University's database.
2014-04-17T20:09:31Z
2014-04-17T20:09:31Z
2005-07-01
text
http://hdl.handle.net/11244/10302
Copyright is held by the author who has granted the Oklahoma State University Library the non-exclusive right to share this material in its institutional repository. Contact Digital Library Services at lib-dls@okstate.edu or 405-744-9161 for the permission policy on the use, reproduction or distribution of this material.
Oklahoma State University
oai:shareok.org:11244/435542019-10-15T23:00:29Zcom_11244_10460com_11244_6231col_11244_10464
2016-07-05T21:16:53Z
urn:hdl:11244/43554
Routine Maintenance Activities as Learning Experiences in Homemaking Education
Coe, Emma E.
Pearson, Millie
Chapman, Joanna
2016-07-05T21:16:53Z
2016-07-05T21:16:53Z
1950
text
http://hdl.handle.net/11244/43554
Copyright is held by the author who has granted the Oklahoma State University Library the non-exclusive right to share this material in its institutional repository. Contact Digital Library Services at lib-dls@okstate.edu or 405-744-9161 for the permission policy on the use, reproduction or distribution of this material.
oai:shareok.org:11244/128632019-10-21T00:46:45Zcom_11244_10460com_11244_6231col_11244_10464
2014-10-01T13:34:35Z
urn:hdl:11244/12863
Solid State NMR Study of the Interfacial Region in Surface Modired Silica-poly(Methyl methacrylate) Composites
Roychen, Joseph
Polymer composites are high strength materials made by mixing inorganic fillers nto a polymer matrix. The physical and mechanical properties of composite materials are governed by the adhesion between the two phases. A variety of chemical and physical interactions occurring at the interface is responsible for the inherent properties of these materials. Hence, there is a need to understand the interface of the composite materials. Uniform mixing between the components is necessary to achieve the optimum properties. Research in our lab focuses on the preparation of optically transparent composites by incorporating nanometer size particles of colloidal silica into poly(methyl methacrylate) (PMMA, a commodity plastic). The adhesion between the components can be increased by anchoring on the filler a reactive group, which is also compatible with the polymer. In silicate systems the compounds used to bond the silica to the polymer are called silane coupling agents. We used the silane coupling agent 3(trimethoxysilyl)propyl methacrylate (TPM) to improve the adhesion between the components-a molecular glue that bonds silica to PMMA. NMR spectroscopy is the only technique available to determine molecular structure of an amorphous solid such as the composite. The material is exposed to a strong magnetic field to probe nuclei situated in different environments within the sample. NMR can be used to determine both the molecular structure and molecular mobility within the composite. We found that the composite components were intimately mixed at the molecular level, and the presence of TPM silica does not increase rigidity of PMMA in the composite. This lays the ground work for further studies on these composites to elucidate the chemical interactions that occur at the interface of these materials.
2014-10-01T13:34:35Z
2014-10-01T13:34:35Z
1995-07-01
text
http://hdl.handle.net/11244/12863
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Oklahoma State University
oai:shareok.org:11244/83432019-10-20T02:25:49Zcom_11244_10460com_11244_6231col_11244_10464
2014-04-15T18:35:37Z
urn:hdl:11244/8343
Oklahoma Quality Beef Network: Price Premiums from a Preconditioning Program
Ratcliff, Chandra Dawn
Ward, Clem E.
Lalman, David
Peel, Derrell
The proposed study determined if an extra value existed in the preconditioned calves involved in this particular program. It is going to estimate the price differences between cattle sold through the OQBN program and traditional livestock auction markets. It was found by this study that most of the sales that participated in the Oklahoma Quality Beef Network sales generated some sort of a premium for the cattle producers that participated in the program
2014-04-15T18:35:37Z
2014-04-15T18:35:37Z
2004-07-01
text
http://hdl.handle.net/11244/8343
Copyright is held by the author who has granted the Oklahoma State University Library the non-exclusive right to share this material in its institutional repository. Contact Digital Library Services at lib-dls@okstate.edu or 405-744-9161 for the permission policy on the use, reproduction or distribution of this material.
Oklahoma State University
oai:shareok.org:11244/186952019-10-16T20:20:11Zcom_11244_10460com_11244_6231col_11244_10464
2015-09-23T18:30:13Z
urn:hdl:11244/18695
Atmospheric Contribution of Phosphorus to an Aquatic System
Sober, Ronald Fredrick
Bates, Marcia H.
Kincannon, Don F.
Gaudy, A. F., Jr.
This project has been financed in part with federal funds from tha Environmental Protection Agency under fellowship number U-910856- 01-0. The contents do not necessarily reflect the views and policies of the Environmental Protection Agency, nor does mention of trade names or commercial products constitute endorsement of recommendation for use.
2015-09-23T18:30:13Z
2015-09-23T18:30:13Z
1978-07-01
text
http://hdl.handle.net/11244/18695
Copyright is held by the author who has granted the Oklahoma State University Library the non-exclusive right to share this material in its institutional repository. Contact Digital Library Services at lib-dls@okstate.edu or 405-744-9161 for the permission policy on the use, reproduction or distribution of this material.
Oklahoma State University
oai:shareok.org:11244/3372342023-04-04T05:00:17Zcom_11244_10460com_11244_6231col_11244_10464
2023-04-03T20:51:38Z
urn:hdl:11244/337234
Evaluation of a dual-mode, turbojet-turboprop engine for unmanned aircraft
Schinzler, Trey
Rouser, Kurt
Gaeta, Rick
Jacob, Jamey
This paper provides experimental feedback on the feasibility of a small-scale, dual-mode turbojet to turboprop engine. The engine used for testing was a KingTech K45-TP. Key parameters focused on for this experiment were turbojet and turboprop thrust. A parametric cycle analysis was performed on a pure turbojet configuration and turboprop configuration, then using mass flow parameter various nozzles were sized to be designed and tested. Mission analysis was also performed to get an idea of the required thrust that could be expected for takeoff and flight. The experiment examines the effect of turbojet thrust with respect to varying nozzle exit diameters, as well as nozzle location relative to the exhaust exit. The engine was run in both turbojet mode and turboprop mode with the various nozzle designs with exit diameters measuring from roughly 1.5 inches to 1 inch. During each test, the nozzles started at a backoff distance of two inches and as the engine was running the nozzles were moved forward at quarter inch increments until the backoff distance was half an inch. While running the engine in turbojet mode, there was a highlighted focus on a potential performance increase in turbojet thrust as the nozzles were moved closer to the exhaust. While running the engine in turboprop mode, the highlighted focus was if there was a performance decrease in turboprop thrust as the nozzles were moved closer to the exhaust. Results show that there is an optimal nozzle geometry and placement for turbojet mode, with little effect while running in turboprop mode. Overall, the turbojet thrust recorded during testing is found to be inadequate for high-speed cruise, however the thrust that is produced could be useful for a transition to turboprop mode from a RATO takeoff with a propeller lock.
2023-04-03T20:51:38Z
2023-04-03T20:51:38Z
2022-05
https://shareok.org/handle/11244/337234
Copyright is held by the author who has granted the Oklahoma State University Library the non-exclusive right to share this material in its institutional repository. Contact Digital Library Services at lib-dls@okstate.edu or 405-744-9161 for the permission policy on the use, reproduction or distribution of this material.
oai:shareok.org:11244/95332019-10-19T22:10:09Zcom_11244_10460com_11244_6231col_11244_10464
2014-04-15T22:30:10Z
urn:hdl:11244/9533
Pretty Good Privacy: the Dual Impulse of Samuel Pepyss Diary
Sewell, Bradley Allen
Samuel Pepys enjoys literary fame because of the diary he kept between 1660 and 1669. Pepys's encrypted diary lay undecoded and unread until the early nineteenth century. Scholars have debated whether the author anticipated future readers, or if he intended the diary for his eyes alone. Pepys's motivation for writing has rhetorical implications for readers that make the question of intention especially important for his diary. Textual and rhetorical evidence supports the idea that Pepys wrote the diary for a future audience to decode and find after his death. Pepys had no specific reader in mind, but he anticipated a humanistic audience similar to what he found in the Royal Society. The diary represents a literary vivisection of Pepys's life, and finding the external audience in Pepys highlights the diary as a seventeenth-century literary innovation that helped define the later course of literature.
2014-04-15T22:30:10Z
2014-04-15T22:30:10Z
2010-12-01
text
http://hdl.handle.net/11244/9533
Copyright is held by the author who has granted the Oklahoma State University Library the non-exclusive right to share this material in its institutional repository. Contact Digital Library Services at lib-dls@okstate.edu or 405-744-9161 for the permission policy on the use, reproduction or distribution of this material.
Oklahoma State University
oai:shareok.org:11244/241402019-10-20T03:32:09Zcom_11244_10460com_11244_6231col_11244_10464
2016-01-08T21:46:48Z
urn:hdl:11244/24140
Estimate of Daily Milk Yield in Hereford and Angus Dams
Omar, Mohammad Ariff
Frahm, Richard R.
Wells, Milton
Wagner, Donald G.
2016-01-08T21:46:48Z
2016-01-08T21:46:48Z
1974-12-01
text
http://hdl.handle.net/11244/24140
Copyright is held by the author who has granted the Oklahoma State University Library the non-exclusive right to share this material in its institutional repository. Contact Digital Library Services at lib-dls@okstate.edu or 405-744-9161 for the permission policy on the use, reproduction or distribution of this material.
Oklahoma State University
oai:shareok.org:11244/164292019-10-20T06:05:23Zcom_11244_10460com_11244_6231col_11244_10464
2015-08-27T16:05:57Z
urn:hdl:11244/16429
Validity of the Telephone Apprehension Measure
Steele, Cam Monroe
Reinsch, N. L.
Hughey, Jim
Stano, Michael
2015-08-27T16:05:57Z
2015-08-27T16:05:57Z
1983-12-01
text
http://hdl.handle.net/11244/16429
Copyright is held by the author who has granted the Oklahoma State University Library the non-exclusive right to share this material in its institutional repository. Contact Digital Library Services at lib-dls@okstate.edu or 405-744-9161 for the permission policy on the use, reproduction or distribution of this material.
Oklahoma State University
oai:shareok.org:11244/97352019-10-20T04:14:05Zcom_11244_10460com_11244_6231col_11244_10464
2014-04-16T03:11:26Z
urn:hdl:11244/9735
Factors Influencing Adult Students' Decisions to Enroll in the Architecture and Construction Career Cluster at Meridian Technology Center
Rodriguez, Lily Yaneth Calix
Self, Mary Jo
Ausburn, Lynna Joyce
Olson, Nadine
The purpose of this study was to explore and describe the demographical and informational factors that influence students' decisions to enroll in the architecture and construction career cluster at the Meridian Technology Center (MTC). The problem was analyzed using a cross-sectional survey methodology. The target population for the present study was the morning and afternoon adult student body enrolled in the architecture and construction career cluster at Meridian Technology Center. Thirty-seven students (N=37) in eight courses completed a survey that used a check list and Likert-type scale format. Both concrete variables, such as the enrollment and demographical information, and intangible variables, such as influences on student enrollment decisions and attitudes toward the MTC, were studied using descriptive statistics. Findings from the study indicate that the group of participants was very homogeneous: mostly males, part time employed, high school diploma as the highest level of education achieved, with a gross annual income less than $10,000. Regarding their enrollment status, the majority was first time students at MTC taking classes for the first time in the program currently enrolled. Influential factors such as the interest in learning about the occupation, desire to work in the industry, challenge to learn a new skill, and better job opportunities were identified as the main factors that may have influenced their decision to enroll in CTE program at MTC. The person who was the strongest influence in their decision to enroll at MTC was identified as "myself." The main source of information accessed by students before making the decision to enroll was the Internet. Other sources of information listed by students were high school counselor, parent, career day or event, and letter from the MTC. Overall participants have a positive image of MTC and they are supportive of MTC programs.
2014-04-16T03:11:26Z
2014-04-16T03:11:26Z
2009-05-01
text
http://hdl.handle.net/11244/9735
Copyright is held by the author who has granted the Oklahoma State University Library the non-exclusive right to share this material in its institutional repository. Contact Digital Library Services at lib-dls@okstate.edu or 405-744-9161 for the permission policy on the use, reproduction or distribution of this material.
Oklahoma State University
oai:shareok.org:11244/309482019-10-15T19:32:25Zcom_11244_10460com_11244_6231col_11244_10464
2016-02-19T22:14:10Z
urn:hdl:11244/30948
Perceptual-Motor Learning in Mental Retardates as a Function of Variations in: Social Situation, Amount of Reinforcement and Delay of Reinforcement
Locke, Billy J.
Gustafson, L. M.
Gladstone, Roy
2016-02-19T22:14:10Z
2016-02-19T22:14:10Z
1960-05-01
text
http://hdl.handle.net/11244/30948
Copyright is held by the author who has granted the Oklahoma State University Library the non-exclusive right to share this material in its institutional repository. Contact Digital Library Services at lib-dls@okstate.edu or 405-744-9161 for the permission policy on the use, reproduction or distribution of this material.
Oklahoma State University
oai:shareok.org:11244/83352019-10-20T02:24:55Zcom_11244_10460com_11244_6231col_11244_10464
2014-04-15T18:35:35Z
urn:hdl:11244/8335
Measuring the Economic Impacts of Switchgrass and Cellulosic Ethanol Production in Oklahoma
Moss, James Dakota
Holcomb, Rodney
Kenkel, Phil
Shideler, Dave
Oklahoma, being a major agricultural based state, will have the opportunity to become a large contributor to the production of alternative energy sources such as cellulosic ethanol from switchgrass. The goal of this study is to measure the economic impacts of switchgrass production for cellulosic biomass and the operation of cellulosic ethanol plants in Oklahoma. Utilizing results from a comprehensive linear mathematical programming model the locations for cellulosic ethanol plants and switchgrass production areas were found for nine different scenarios. With information on optimal plant locations and switchgrass production areas IMPLAN study area data and industry accounts are edited to show how the two activities will impact the study area. Also with a large agricultural cooperative presence in Oklahoma the model will show how different management practices such as coop owned vs. private ownership will affect the study area. In scenario one, for single plant additional impact assessments made for varying levels of cooperative and private ownership. By retaining plant profits in the region through cash patronage to producer owners cooperative ownership was measured for 50% cooperative ownership and 100% cooperative ownership. For the 100% privately owned no profits are retained in the region. For the 100% privately owned scenario there is a combined industry output for switchgrass production and ethanol production of 70 million, and a combined employment impact of 556 employees for the region. In the 100% cooperative owned scenario there is a combined industry output for switchgrass production and ethanol production of 86.1 million, and a combined employment impact of 726 employees in the region. Because of the induced impacts that result from the cooperative membership model industry output is 16.1 million higher than the privately owned and employment has 170 more jobs. In all other scenarios private equity ownership is assumed with the establishment of a single plant in the state and the switchgrass production area of only eight counties to supply it a combined economic impact for industry output of 70 million and an employment impact of 556 jobs from the two activities. In the ninth scenario switchgrass production and ethanol production have a combined industry output impact of 728.9 million and the total employee impact is 6,132. From the range of industry output and employment from scenarios one through nine the results show that the production of switchgrass for cellulosic ethanol production will have a large economic impact on the state of Oklahoma.
2014-04-15T18:35:35Z
2014-04-15T18:35:35Z
2012-05-01
text
http://hdl.handle.net/11244/8335
Copyright is held by the author who has granted the Oklahoma State University Library the non-exclusive right to share this material in its institutional repository. Contact Digital Library Services at lib-dls@okstate.edu or 405-744-9161 for the permission policy on the use, reproduction or distribution of this material.
Oklahoma State University
oai:shareok.org:11244/96722019-10-20T02:07:21Zcom_11244_10460com_11244_6231col_11244_10464
2014-04-16T03:07:44Z
urn:hdl:11244/9672
Characterization of Closed-loop Process Variable Data
Vennavelli, Anand N.
Business analysis methods for controller performance assessment are implemented using statistical process control (SPC) and "six-sigma" principles. This work focuses on the characterization closed-loop archived data primarily for use in SPC-based analysis for controller performance assessment. Closed-loop data sets for the advanced process control manipulated variables (APC-MVs) exhibit different levels of variability when considered over a one year period. These periods of variability are termed as "error variability bands." This thesis presents four error variability band identification techniques using general purpose statistical tools including histograms, normal probability plots, quantile-quantile plots and the sample autocorrelation function. The performance of these methods is presented using archived refinery data reconstructed on a one-minute sample period for flow, pressure, and temperature loops. The impact of set-point variability on APC manipulated variables is also illustrated.
2014-04-16T03:07:44Z
2014-04-16T03:07:44Z
2006-12-01
text
http://hdl.handle.net/11244/9672
Copyright is held by the author who has granted the Oklahoma State University Library the non-exclusive right to share this material in its institutional repository. Contact Digital Library Services at lib-dls@okstate.edu or 405-744-9161 for the permission policy on the use, reproduction or distribution of this material.
Oklahoma State University
oai:shareok.org:11244/325552019-10-17T15:41:10Zcom_11244_10460com_11244_6231col_11244_10464
2016-03-09T17:14:21Z
urn:hdl:11244/32555
Effect of Various Soil Fertility Treatments of Yield and Composition of Alfalfa on Two Soil Types
Thomas, Glenn Vernon
Lynd, J. Q.
Reed, Robert M.
2016-03-09T17:14:21Z
2016-03-09T17:14:21Z
1956-07-01
text
http://hdl.handle.net/11244/32555
Copyright is held by the author who has granted the Oklahoma State University Library the non-exclusive right to share this material in its institutional repository. Contact Digital Library Services at lib-dls@okstate.edu or 405-744-9161 for the permission policy on the use, reproduction or distribution of this material.
Oklahoma State University
oai:shareok.org:11244/3176992019-10-15T09:48:14Zcom_11244_10460com_11244_6231col_11244_10464
2019-03-25T20:05:24Z
urn:hdl:11244/317699
Diet, Pain, and Inflammation in Participants with Symptomatic Knee Osteoarthritis
Christiansen, Danielle
Basu, Arpita
Betts, Nancy M.
Lucas, Edralin A.
Osteoarthritis (OA) is a degenerative joint disease that affects the cartilage, subchondral bone, and synovial fluid. Risk factors for knee OA include increase adiposity, where excess adipose tissue release pro-inflammatory cytokines and adipokines, creating a state of chronic inflammation, and leading to the activation of matrix metalloproteinases, which facilitate cartilage breakdown. Individuals with knee OA experience pain upon walking or standing, decreased range of motion, and loss of function in the affected joint. The purpose of this study is to: (1) evaluate the relationship of dietary nutrient intakes with quality of life indicators, pain scores, and serum biomarkers of inflammation and cartilage degradation in participants with symptomatic knee OA (observational) and (2) evaluate the effects of freeze-dried strawberries on serum biomarkers of cartilage degradation in participants with symptomatic knee OA (intervention). Study participants (n=17) with abdominal obesity and symptomatic knee OA completed baseline self-reported dietary records, VAS and ICOAP pain score evaluations, HAQ-DI quality of life indicator assessments, and serum blood draws to assess biomarkers of inflammation and cartilage degradation. Subjects were then randomly assigned to consume 50g of freeze-dried strawberry powder each day or 50g of placebo powder in this 26-week, randomized, double-blind, placebo controlled, cross-over intervention trial. Results of the observational data showed significant inverse correlations of soluble fiber with serum MMP-3, total sugar with MMP-8, saturated fat with MMP-3, vitamin C with MMP-8, and copper with IL-6. Results from our 26-week cross-over intervention showed freeze-dried strawberry supplementation significantly reduced serum concentrations of MMP-3 compared to the placebo. Our study identifies intriguing relationships between dietary nutrient intakes and biomarkers of inflammation and cartilage degradation by suggesting that a well-balanced diet, with adequate intakes of saturated fat, sugar, vitamin C, soluble fiber, and copper, may have a protective role against the activation of cartilage degrading enzymes in knee OA. Additionally, strawberry supplementation decreased serum MMP-3 concentrations suggesting that well-balanced eating habits should also incorporate an array of antioxidant rich foods, including the bioactive strawberry, as an adjunct therapy in knee OA.
2019-03-25T20:05:24Z
2019-03-25T20:05:24Z
2018-05-01
https://hdl.handle.net/11244/317699
Copyright is held by the author who has granted the Oklahoma State University Library the non-exclusive right to share this material in its institutional repository. Contact Digital Library Services at lib-dls@okstate.edu or 405-744-9161 for the permission policy on the use, reproduction or distribution of this material.
oai:shareok.org:11244/264402019-10-16T20:20:20Zcom_11244_10460com_11244_6231col_11244_10464
2016-01-27T15:49:52Z
urn:hdl:11244/26440
Relationship Between the Bender Gestalt Test and the Frostig Developmental Test of Visual Perception
O'Connor, William J.
Sandvold, Kenneth D.
Tyrrell, Donald
2016-01-27T15:49:52Z
2016-01-27T15:49:52Z
1967
text
http://hdl.handle.net/11244/26440
Copyright is held by the author who has granted the Oklahoma State University Library the non-exclusive right to share this material in its institutional repository. Contact Digital Library Services at lib-dls@okstate.edu or 405-744-9161 for the permission policy on the use, reproduction or distribution of this material.
Oklahoma State University
oai:shareok.org:11244/237292019-10-17T18:51:20Zcom_11244_10460com_11244_6231col_11244_10464
2016-01-08T20:15:14Z
urn:hdl:11244/23729
Investigation of College Males' Attitudes Toward an Equal Status for Women
Williams, Sue Ellen
Hoffer, Josephine
Stinnett, Nick
Jorgenson, Elaine
2016-01-08T20:15:14Z
2016-01-08T20:15:14Z
1972-05-01
text
http://hdl.handle.net/11244/23729
Copyright is held by the author who has granted the Oklahoma State University Library the non-exclusive right to share this material in its institutional repository. Contact Digital Library Services at lib-dls@okstate.edu or 405-744-9161 for the permission policy on the use, reproduction or distribution of this material.
Oklahoma State University
oai:shareok.org:11244/130332019-10-21T03:11:25Zcom_11244_10460com_11244_6231col_11244_10464
2014-10-01T19:55:25Z
urn:hdl:11244/13033
Comparison Study of Feedforward Fully-connected Neural Networks Vs. Cascade Correlation Networks for Prediction of Soil Moisture Content
Liu, Xiaoji
2014-10-01T19:55:25Z
2014-10-01T19:55:25Z
1994-12-01
text
http://hdl.handle.net/11244/13033
Copyright is held by the author who has granted the Oklahoma State University Library the non-exclusive right to share this material in its institutional repository. Contact Digital Library Services at lib-dls@okstate.edu or 405-744-9161 for the permission policy on the use, reproduction or distribution of this material.
Oklahoma State University
oai:shareok.org:11244/200662019-10-19T02:09:34Zcom_11244_10460com_11244_6231col_11244_10464
2015-10-19T18:20:49Z
urn:hdl:11244/20066
Housing for Older Adults: Dormitory Conversion
Knuth, Kristin Ann
Salmon, Christine
Stewart, K. Kay
Stinnett, Nick
This study is concerned with the possibility of converting Stout Hall at Oklahoma State University into older adult housing and an interdisciplinary gerontology study center. It is hoped that the results of this study will be implemented in order to provide more and better housing for older adults in Stillwater, and to further interdisciplinary research efforts in the field of gerontology.
2015-10-19T18:20:49Z
2015-10-19T18:20:49Z
1975-05-01
text
http://hdl.handle.net/11244/20066
Copyright is held by the author who has granted the Oklahoma State University Library the non-exclusive right to share this material in its institutional repository. Contact Digital Library Services at lib-dls@okstate.edu or 405-744-9161 for the permission policy on the use, reproduction or distribution of this material.
Oklahoma State University
oai:shareok.org:11244/3009922019-10-15T06:13:17Zcom_11244_10460com_11244_6231col_11244_10464
2018-07-12T18:47:22Z
urn:hdl:11244/300992
Effect of Supersonic Vibrations on Escherichia Coli
Cheng His, Eugene Yu
Graves, Quintin B.
Martin, J. Rogers
2018-07-12T18:47:22Z
2018-07-12T18:47:22Z
1950-04-01
https://hdl.handle.net/11244/300992
Copyright is held by the author who has granted the Oklahoma State University Library the non-exclusive right to share this material in its institutional repository. Contact Digital Library Services at lib-dls@okstate.edu or 405-744-9161 for the permission policy on the use, reproduction or distribution of this material.
oai:shareok.org:11244/234972019-10-16T20:43:01Zcom_11244_10460com_11244_6231col_11244_10464
2016-01-08T15:51:56Z
urn:hdl:11244/23497
Occupational Distribution of Vocational Agriculture Graduates of Tecumseh High School and their Assessment of Teaching Program Content
Sinor, Richard Thomas
Terry, Robert
Price, Robert R.
2016-01-08T15:51:56Z
2016-01-08T15:51:56Z
1971-07-01
text
http://hdl.handle.net/11244/23497
Copyright is held by the author who has granted the Oklahoma State University Library the non-exclusive right to share this material in its institutional repository. Contact Digital Library Services at lib-dls@okstate.edu or 405-744-9161 for the permission policy on the use, reproduction or distribution of this material.
Oklahoma State University
oai:shareok.org:11244/315692019-10-20T23:52:59Zcom_11244_10460com_11244_6231col_11244_10464
2016-02-24T16:53:44Z
urn:hdl:11244/31569
Demise of Democracy in Czechoslovakia
Petrzelka, Bohus
Rich, Clifford A. L.
Donnell, Guy R.
2016-02-24T16:53:44Z
2016-02-24T16:53:44Z
1958-07-01
text
http://hdl.handle.net/11244/31569
Copyright is held by the author who has granted the Oklahoma State University Library the non-exclusive right to share this material in its institutional repository. Contact Digital Library Services at lib-dls@okstate.edu or 405-744-9161 for the permission policy on the use, reproduction or distribution of this material.
Oklahoma State University
oai:shareok.org:11244/545282019-10-15T20:10:00Zcom_11244_10460com_11244_6231col_11244_10464
2018-03-13T18:15:41Z
urn:hdl:11244/54528
Powered Paraglider Longitudinal Dynamic Modeling and Experimentation
Gibson, Colin Parker
Arena, Andrew S.
Conner, Joseph P.
Jacob, Jamey D.
Paragliders and similar controllable decelerators provide the benefits of a compact packable parachute with the improved glide performance and steering of a conventional wing, making them ideally suited for precise high offset payload recovery and airdrop missions. This advantage over uncontrollable conventional parachutes sparked interest from Oklahoma State University for implementation into its Atmospheric and Space Threshold Research Oklahoma (ASTRO) program, where payloads often descend into wooded areas. However, due to complications while building a powered paraglider to evaluate the concept, more research into its design parameters was deemed necessary. Focus shifted to an investigation of the effects of these parameters on the flight behavior of a powered system. A longitudinal dynamic model, based on Lagrange�s equation for adaptability when adding free-hanging masses, was developed to evaluate trim conditions and analyze system response. With the simulation, the effects of rigging angle, fuselage weight, center of gravity (cg), and apparent mass were calculated through step thrust input cases. Test flights evaluated the behavior of the paraglider, and the design was revised based on observations and analysis. Rigging angle sets the power-off glide slope as well as thrust capacity and input response damping. At more negative angles the glide slope is steeper, can handle more thrust, and damps quicker at a lower frequency. The fuselage weight, or loading, affects thrust capacity and power-off sink rate, with heavier gliders capable of larger thrust inputs but faster descent speed; however, the glide slope remains unchanged. As the cg position is place forward of the attachment point the incidence angle and thrust line will rotate downward, while the opposite occurs moving aft. For the test vehicle, a slightly forward position allowed for the greatest thrust input, and far forward reduced performance for equivalent thrust compared to far aft. Three test flights were performed. The paraglider displayed lateral oscillations due to fuselage-parafoil twisting and wing anhedral, despite its inherent keel effect. A wider parafoil mounting configuration provides increased twist resistance, which can otherwise cause sideslips and dihedral induced rolling, and adjusted rigging reduced wing arc.
2018-03-13T18:15:41Z
2018-03-13T18:15:41Z
2016-12-01
https://hdl.handle.net/11244/54528
Copyright is held by the author who has granted the Oklahoma State University Library the non-exclusive right to share this material in its institutional repository. Contact Digital Library Services at lib-dls@okstate.edu or 405-744-9161 for the permission policy on the use, reproduction or distribution of this material.
oai:shareok.org:11244/128422019-10-21T00:18:37Zcom_11244_10460com_11244_6231col_11244_10464
2014-10-01T13:34:26Z
urn:hdl:11244/12842
Marketing Feasibility of a Nutritionally Enhanced Pasta
Palaniswamy, Balaji
2014-10-01T13:34:26Z
2014-10-01T13:34:26Z
1995-05-01
text
http://hdl.handle.net/11244/12842
Copyright is held by the author who has granted the Oklahoma State University Library the non-exclusive right to share this material in its institutional repository. Contact Digital Library Services at lib-dls@okstate.edu or 405-744-9161 for the permission policy on the use, reproduction or distribution of this material.
Oklahoma State University
oai:shareok.org:11244/122722019-10-20T14:00:27Zcom_11244_10460com_11244_6231col_11244_10464
2014-09-29T19:40:05Z
urn:hdl:11244/12272
Characterization of a Nip Impinged Wound Roll
Hoffecker, Paul
2014-09-29T19:40:05Z
2014-09-29T19:40:05Z
1997-05-01
text
http://hdl.handle.net/11244/12272
Copyright is held by the author who has granted the Oklahoma State University Library the non-exclusive right to share this material in its institutional repository. Contact Digital Library Services at lib-dls@okstate.edu or 405-744-9161 for the permission policy on the use, reproduction or distribution of this material.
Oklahoma State University
didl///col_11244_10464/100