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Browsing by Author "Taylor, William J."

Now showing 1 - 7 of 7
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    An analysis of the relationship between sectoral activity, diversification, and structural change in the economy
    Basu, Rathin (Virginia Tech, 1990-04-03)
    The purpose of this study is to analyse the changes, if any, that take place in regional economic structures in the process of diversification, and the roles of sectors in such changes. Input-Output and Structural Path Analysis are used to develop indices that may be used for carrying out the analysis of these issues. A method is also developed for examining the role of linkages with respect to the fundamental structure of production outlined by Simpson and Tsukui. Using these indices and methods, the economic relationships between sectors and the economic structures of six planning districts in Virginia, in addition to the economies of the state of Virginia and the U.S. are analysed and compared. On the basis of these analyses, it is concluded that: (a) The feature of bloc independence found at the level of first order transactions in an economy is diluted at the level of higher order transactions in the metals bloc. However it persists strongly at higher levels of transactions in the nonmetals bloc. (b) The sectors of the metals, nonmetals and services blocs show a proportionate development of linkages irrespective of the degree of diversification of the economy. (c) Contrary to Hirschman's suggestion that complexity of linkages increases with diversification, the results suggest that diversification leads to less complexity in the linkage relationships. (d) The linkages of the agricultural sectors in Virginia are biased towards the services sectors. In the case of the agricultural sectors at the national level, the linkages are biased primarily towards the manufacturing sectors. The implications of these findings for development policy are discussed.
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    Detecting macroeconomic impacts on agricultural prices and export sales: a time series forecasting approach
    Bradshaw, Girard W. (Virginia Tech, 1988-06-13)
    The effect of movements in the real exchange rate on agricultural prices and agricultural export sales is assessed based on the principle of Granger causality. An out-of-sample forecasting procedure is used to conduct tests for Granger causality from the exchange rate to agricultural prices and export sales. Technical time series issues such as stationarity, the method of lag-length selection, in sample versus out-of-sample tests for Granger causality, and long-range versus short-range forecasting are considered in relation to the outcome of Granger causality tests. Theoretical and empirical studies are reviewed which indicate the importance of working with stationary data series when testing for Granger causality. Differing methods of lag-length selection are found to affect the outcome of both in-sample and out-or-sample tests for Granger causality. The usual in-sample tests for Granger causality are compared to out-of-sample tests; the results of the comparison reveal that the in-sample tests do not in-general agree among themselves, nor do they agree with the out-of-sample tests' results. This indicates the importance of searching the model space for the best specification before conducting Granger causality tests. Long-range forecasts are compared to the I-step ahead forecasts used to test for Granger causality; these forecasts corroborate the out-of- sample tests for Granger causality in finding significant impacts from the exchange rate to agricultural export sales and agricultural prices.
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    Enabling behaviors exhibited by selected Virginia postsecondary vocational technical instructors
    Smick, Regina Anne (Virginia Polytechnic Institute and State University, 1988)
    Critical thinking is a chief focal point in all areas of education today. Teachers can create an environment that is conducive to critical thinking through behaviors practiced in the classroom. Knowledge and use of these teacher behaviors by teachers are basic for development and enhancement of critical thinking in students. The purpose of this research was to determine the enabling behaviors used by a selected group of Virginia postsecondary vocational educators that stimulate critical thinking in students. The primary subjects for this study were postsecondary vocational technical educators randomly selected from five community colleges in Virginia. A total of 30 instructors were identified. In addition, 328 community college students participated in the study. Selected conclusions drawn from the findings were: 1. The postsecondary vocational technical instructors of the five community colleges selected for this study are not using the enabling behavior of questioning that"best" stimulates critical thinking or modeling the behaviors found in the literature that will enhance a student's ability to think critically. 2. The amount of pedagogical training (course work) taken by the postsecondary vocational technical instructors, of the five community colleges selected for this study, does not seem to influence the instructor's use of enabling behaviors related to critical thinking. 3. The community college students in this study perceived their instructors to be exhibiting behaviors and possessing characteristics that will stimulate critical thinking. Selected recommendations drawn from the findings and conclusions are: 1. Additional research is needed to determine if the findings of this study are typical of vocational technical community college instructors statewide. 2. Research similar to this study needs to be conducted on faculty other than vocational technical instructors of the community colleges to assess their use of enabling behaviors. 3. Community college instructors need to be exposed to instructors in formal course work or in informal workshops that embody and exhibit enabling behaviors, especially questioning and modeling.
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    Financial returns to human capital development: a case study of former students of agriculture at Virginia Tech
    Almero, Maria Cristina P. (Virginia Tech, 1988-08-17)
    The objective of this thesis was to identify and measure the effect of factors that influenced income earnings of former agricultural students. Data were obtained from a questionnaire mailed to former Virginia Tech students, all of whom were enrolled in the College of Agriculture and Life Sciences during 1977. An analysis of the 243 respondents was conducted with emphasis on educational profiles, labor market entry and participation, and personal characteristics. Models based on human capital and labor market principles were developed to explain differences in individual incomes. Earned income models were estimated for the first job after leaving college, for the job held in 1985, and for the 1985 job in a lagged formulation. Analysis of covariance was used to estimate the empirical models. Model results for the first job starting income indicated positive returns to education and the provision of profit sharing benefits. Significantly higher starting incomes were also found for males and for those who considered pay as important or very important. In contrast, the year of job entry exhibited an inverse relationship with starting income. No significant differences in first job income were found for college major, type of placement services used, state location of the job, nature of the job (whether agricultural or not), and provision of housing benefits. Model results for the 1985 income, as in the starting income model, indicated positive returns to the provision of profit sharing benefits. Significantly higher incomes were also associated with married respondents, urban residents, and those who ranked oral communication skills as much needed or essential. In contrast, lower incomes were associated with those who ranked a technical skill to be much needed or essential and with those who held more previous jobs. Insignificant variables in the 1985 income model included level of education, college major, state location of the job, nature of the job, personal assessment of the importance of pay, provision of housing benefits, ranking of the need for knowledge of agricultural policy, and gender. Results for the lagged formulation of the 1985 income model were similar to results for the 1985 income model. In addition, prior income was found to be a positive and significant determinant of 1985 incomes. Implications for academic support areas, curricula, and students were presented and discussed
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    The Horticultural Producers Federation: a comprehensive approach for addressing the problems of small-scale vegetable marketing cooperatives
    Kazmierczak, Tamra Kirkpatrick (Virginia Tech, 1990-09-05)
    A theoretical analysis of marketing cooperatives indicates that in imperfect markets where cooperative members possess the resources to expand production to levels where their marginal costs equal their marginal returns, both producers and consumers are better off than if the producers sell smaller output quantities to investor-oriented firms at a lower market price. Although the United States government has supported the formation and operation of many small-scale marketing cooperatives in the southeast, their success has been low. This thesis describes one approach used to increase the viability of small-scale vegetable marketing cooperatives through a federated cooperative, the Horticultural Producers Federation (HPF). The HPF provides marketing and management services that address specific market failures and intra-firm inefficiencies encountered by its member cooperatives. HPF services include record keeping, market information, financial planning and management, accounting and payroll, educational and technical support. centralized marketing, and a newsletter. The development and implementation of these services is described in this thesis as is the cooperatives' evaluation of these services through the five year duration of the study. The cooperatives' final evaluation of the services and the HPF indicated that on average they were more than satisfied with the individual HPF services and the impact of the HPF on them and their members. Future challenges for the HPF include the development of more services by the HPF or other agencies to address a few remaining problems. Services which would target areas of concern include centralized computer support; public relations and promotion activities; as well as member, director, and management training. The large majority of cooperative members which are part-time farmers also poses a significant challenge. Until these farmers gain the resources and expertise to intensively manage their operations, the individual cooperatives and the HPF centralized marketing service will face problems of under production and poor quality.
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    Improving the Efficiency of Hub Operations in a Less-than-Truckload Distribution Network
    Brown, Amy Michelle (Virginia Tech, 2003-04-22)
    The less-than-truckload (LTL) industry is highly competitive, with recent average profit margins less than 3%. LTL shipments are routed through a network of service centers and hubs. The performance of the entire LTL distribution network is highly dependent on the speed and accuracy of the hub operations. The focus of this research effort is to improve hub operations in order to reduce costs and increase service performance levels. Specifically, new approaches are investigated for assigning trailers to dock doors and sequencing the unloading of shipments at hubs. This thesis reviews current industry practices and available research literature on hub operations. Solution approaches for the trailer-to-door assignment and freight sequencing problems are presented along with case study results. The main performance measures are bottleneck time, total labor time, and total travel distance. For the trailer-to-door assignment problem, also referred to as the hub layout problem, the three approaches investigated are the original approach, a semi-permanent approach, and a dynamic approach. For the freight sequencing problem, the five approaches evaluated are trailer-at-a-time, trailer-at-a-time with offloading, nearest neighbor within a group, nearest neighbor within a shared group, and nearest neighbor. The approaches are implemented in C++ and analyzed using data from a regional LTL carrier. The case study results indicate that the dynamic layout performs significantly better than the original and semi-permanent layout for total distance, total labor time, and bottleneck time. For total distance and total labor time, the dynamic layout with nearest neighbor sequencing is the preferred approach. For bottleneck time, the dynamic layout with trailer-at-a-time with offloading performs best, while the nearest neighbor sequencing approach performs almost as well. In general, the case study results indicate that a dynamic layout with either a trailer-at-a-time with offloading approach or a nearest neighbor approach offers the largest potential for improvement. The assumptions and results of the hub layout and freight sequencing approaches are further evaluated using a simulation model. The simulation model indicates that a dynamic layout with nearest neighbor sequencing offers the largest potential for improvement in a more realistic environment with probabilistic and dynamic events. The simulation results also indicate that the trailer-at-a-time with offloading approach may need to be modified to account for more realistic dock conditions. In summary, the approaches explored in this research offer significant opportunity to improve hub operations through reducing bottleneck time, total labor time, and total travel distance.
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    Recruiting and maintaining dairy cooperative members: a strategy for reducing the free rider problem
    Green, Kris R. (Virginia Tech, 1992-04-15)
    Dairy marketing cooperatives provide marketwide services, such as lobbying for higher support prices and negotiating for premiums above marketing order prices, which benefit all dairy farmers in the market. The presence of free riders, people who benefit from these marketwide services without paying any of the costs of these services, can jeopardize the existence of the cooperative. Understanding why members were attracted to the cooperative and why independents (non-members) were attracted to the investor oriented firm (IOF) allows cooperatives to target specific membership groups. Depending on the cooperative's goals, management can then use this information to focus on either retaining current members or attracting new members or both. The purpose of this study is to produce practical recommendations for dairy marketing cooperatives for recruitment and retention of members. This study begins with a background on cooperatives and a conceptual framework based on group and game theory. The data are a result of a regional survey of dairy farmers. The data are then analyzed using t-tests for continuous responses and chi-square tests for categorical responses. This analysis results in a comparison of responses from cooperative members and independents. The independents stressed immediate benefits over long-run gains. Independents also appeared to have a risk/return trade-off. They received higher prices in exchange for fewer written contracts. Economic issues were important to both groups but significantly more important to independent producers. The two groups exhibited no difference on tradition and loyalty issues. Cooperative members emphasized prices and deductions, but they also highlighted assured markets and field services offered by their cooperatives.