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| Registros recuperados: 26 | |
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| Nalley, Lawton Lanier; Barkley, Andrew P.. |
| CIMMYT has invested a large and significant amount of public expenditures in wheat breeding research each year for several decades. Estimates of the impact of the wheat breeding program on wheat yield increases provides information to scientists, administrators, and policy makers regarding the efficacy and the rate of return to these investments, providing important information for future funding decisions. Using CIMMYT test plot data from the Yaqui Valley in Mexico from 1990-2002, regression results indicate that the release of modern CIMMYT varieties has contributed approximately 53.77 kg/ha to yield annually. The growing conditions of the experiment fields located in the Yaqui Valley approximate 40% of the developing world's wheat growing conditions.... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Crop Production/Industries. |
| Ano: 2007 |
URL: http://purl.umn.edu/9778 |
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| Barkley, Andrew P.; Parrish, Dena. |
| The major objective of this study was to identify and quantify the determinants of the selection of a major field of study in the College of Agriculture at Kansas State University in 2004. Data on factors associated with the selection of a major field of study were collected with an internet survey administered to enrolled undergraduate students, and a paper survey administered to incoming freshmen. Logit regression models were estimated to identify the statistical determinants for twelve majors. Results indicated that the desire to work with or without plants or animals was the most influential factor in the decision to enroll in a specific major. Also, gender, high school agriculture courses, agricultural related clubs/activities, high school science... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Teaching/Communication/Extension/Profession. |
| Ano: 2005 |
URL: http://purl.umn.edu/19275 |
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| Barkley, Andrew P.. |
| This research evaluates the use of online examinations in college courses from both instructor and student perspectives. Instructional software was developed at Kansas State University to administer online homework assignments and examinations. Survey data were collected from two classes to measure the level of student support for online examinations. The determinants of the level of student support for online testing were identified and quantified using logistic regression analysis. |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Teaching/Communication/Extension/Profession. |
| Ano: 2001 |
URL: http://purl.umn.edu/36049 |
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| Nalley, Lawton Lanier; Barkley, Andrew P.. |
| This study applies portfolio theory to wheat varietal selection decisions in order to find risk-minimizing outcomes while holding historical yields constant. Potential correlation across wheat cultivar yields increases the complexity of cultivar selection decisions, with gains in one attribute (yield potential) often associated with losses in another (yield stability). Using location-specific empirical data, portfolio theory can provide producers in low-income countries a tool for developing a recommended portfolio of varieties given a desired risk-aversion level. Based on data from Mexico’s Yaqui Valley, results suggest that sowing a portfolio of wheat varieties could have lowered yield variance by 22% to 33% in Northwest Mexico. |
| Tipo: Journal Article |
Palavras-chave: Optimal variety selection; Portfolio analysis; Wheat; Crop Production/Industries. |
| Ano: 2010 |
URL: http://purl.umn.edu/93223 |
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| Barkley, Andrew P.. |
| Rapid technological and economic change has been the defining characteristic of food production, processing, and consumption over the past several decades. Improvements in production techniques, business practices, and information assimilation have enhanced the role of public universities: the provision of knowledge and information by public universities has become increasingly necessary, urgent, and profitable. This trend is likely to continue into the future as rapid development of information technologies, globalization of markets, and natural sciences occur. The thesis of this paper is that the need for institutions of higher education to teach students of all ages how to think, synthesize competing ideas, and assimilate new information has become more... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Teaching/Communication/Extension/Profession. |
| Ano: 2000 |
URL: http://purl.umn.edu/36472 |
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| Barkley, Andrew P.. |
| This research presents the results of a mathematical model of learning, to identify the major determinants of a productive and successful learning environment for college-level students. The driving force of the research is the relationship between: (1) student capacity for learning (ability), and (2) the opportunity to learn provided by the instructor (challenge). The dynamic relationship between ability and challenge leads to the most effective steady state rate of knowledge acquisition (learning). Implications for both students and teachers are derived and explored, including the proposition that a stable and sustainable rate of learning occurs when ability and challenge are congruent. |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Teaching/Communication/Extension/Profession. |
| Ano: 2008 |
URL: http://purl.umn.edu/6161 |
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| Barkley, Andrew P.. |
| Determinants of job mobility and job advancement were motivated from a model of investment in human capital. Least squares and Tobit models were specified and estimated using data from a recent survey of Kansas State University College of Agriculture graduates. Determinants of job turnover and the number of promotions earned were quantified. Job change and job advancement were found to occur early in the careers of agriculture college alumni. Job experience was found to be the most significant determinant of labor mobility and promotion. Personal and occupational characteristics were found to have significant but small impacts on labor mobility and advancement. |
| Tipo: Journal Article |
Palavras-chave: Labor and Human Capital. |
| Ano: 1991 |
URL: http://purl.umn.edu/32589 |
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| Barkley, Andrew P.; Biere, Arlo W.. |
| This research compares and contrasts the college and career experiences of graduates of the Agribusiness and Agricultural Economics undergraduate degree programs at Kansas State University. Using survey data, salary models were estimated for both majors. Starting salaries were not statistically different across majors, whereas current salaries were significantly higher for Agricultural Economics graduates. Alumni of both majors were found to be mobile and enjoy a high degree of satisfaction with their college and career experiences. Agribusiness majors were more likely to supervise employees and be more satisfied with working conditions than Agricultural Economics graduates. |
| Tipo: Journal Article |
Palavras-chave: Teaching/Communication/Extension/Profession. |
| Ano: 2001 |
URL: http://purl.umn.edu/34463 |
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| Barkley, Andrew P.. |
| The agricultural sector of the United States provides an enormous number of issues that require critical thought and evaluation, such as low farm prices, soil depletion, free trade agreements, food safety, rural depopulation, water quality, and farm subsidies. Individuals addressing these issues bring with them different backgrounds, experiences, and perspectives. Often, these differences result in divergent and conflicting opinions on agricultural issues. The objective of this paper is to describe how critical evaluation of agricultural issues in the classroom can lead to greater comprehension, refinement of opinions and ideas, and a passion for lifelong learning. Class discussions and weekly writing assignments on agricultural issues can be used... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Agricultural and Food Policy. |
| Ano: 1994 |
URL: http://purl.umn.edu/118146 |
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| Barkley, Andrew P.. |
| The need for institutions of higher education to teach students of all ages how to think, synthesize ideas, and assimilate new information has become crucial in the information age. Analytical ability is increasingly important, not only for traditional university clientele of young adult residential learners, but also for productive individuals throughout their lives. Agricultural economics teachers must invest in the acquisition of new skills and knowledge, including a willingness to change traditional teaching structures and institutions, to take full advantage of the huge opportunities and challenges of the massive changes in technology and the economy. This paper considers how well teaching programs in agricultural economics enhance student learning. |
| Tipo: Journal Article |
Palavras-chave: Teaching/Communication/Extension/Profession. |
| Ano: 2001 |
URL: http://purl.umn.edu/31154 |
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| Registros recuperados: 26 | |
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