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21.
The Nested PIGLOG Model: An Application to U.S. Food Demand 总被引:1,自引:0,他引:1
A new demand system is introduced, the Nested PIGLOG model, nesting thirteen other demand systems including five that are also new. This new model and its nested special cases are applied to models of U.S. food demand that include food-at-home (FAH), food-away-from-home (FAFH), and alcoholic beverages. Although nested tests and out-of-sample forecasting performance favor generalizing models to a certain degree, statistically insignificant improvements to in-sample-fit and even poorer out-of-sample forecast accuracy undermine further generalizations. Based on a subset of preferred models, FAFH is found to be price and income elastic compared to FAH which is price and income inelastic. 相似文献
22.
Impacts of Declining U.S. Retail Beef Demand on Farm-Level Beef Prices and Production 总被引:1,自引:0,他引:1
A systems model was estimated to determine the effects of declining U.S. retail beef demand on farm-level beef prices and production. Retail beef demand declined by nearly 66% from 1976 to 1999. Results indicate autonomous shifts in retail demand significantly impacted farm-level demands and production. Based on equilibrium multipliers, the 1976–99 reduction in beef demand decreased real slaughter cattle prices and production by 32.1% and 11.2%, respectively. Real feeder cattle prices and production decreased by 8.0% and 22.6%, respectively. Combining the decreases in farm prices and production, slaughter and feeder cattle producers experienced a real revenue reduction of $13.3 billion (61%) due to the long-term decline in demand. 相似文献
23.
In this paper, we provide a model for diffusion of products, which are available in limited quantity until a known expiration date, after which the unsold products have no value. We consider the case of a performing arts company. The model development is built on the foundation of classical product diffusion model by Bass (1969) and the psychological effect known as the scarcity principle (Cialdini, 1985). Our empirical analysis results show that the proposed model can provide significant improvement in prediction of the products characterized by the scarcity effect. 相似文献
24.
Planning food services for a campus setting 总被引:1,自引:0,他引:1
Kenneth J. Klassen Elzbieta Trybus Arundhati Kumar 《International Journal of Hospitality Management》2005,24(4):579-609
Providing appropriate food services in a campus setting is increasingly important due to more demanding customers and because clients have less time to go off-campus when they need to eat. Using a university campus as an example, this research looks at customer satisfaction with existing food services and explores various methods for determining where to locate new facilities. This campus currently has great needs for additional food services, and it is shown clearly where additional food services are required. Also, the methods used are compared in terms of their effectiveness in finding the solution. 相似文献
25.
Lucy Delgadillo 《International Journal of Consumer Studies》2006,30(1):95-104
The purpose of this study was to establish what the housing needs of Costa Rica are and to assess what policies have been implemented to respond to their housing deficit. In order to answer these questions, a combined methodology consisting of primary and secondary data was used. Using open‐ended questions and a topic schedule, face‐to‐face interviews with Costa Rican housing authorities were conducted at the interviewee's work place in Costa Rica in May 2003. The most recent secondary data available in the country was used to compute the housing deficit and to study the effects of demographics on current housing needs. Sources of the secondary data were the Costa Rica Ministry of Housing and Human Settlements, and the National Institute of Statistics and Census. The Costa Rican government has made great progress in reforming the housing finance system in order to meet the housing demand of its citizens. In 2002, Costa Rica had a 75.6% home ownership rate. Yet, even in light of the housing system's current success, many social, economic and political barriers threaten to undermine its accomplishments and the peoples’ ability to obtain safe and affordable housing. The paper considers the strengths and weaknesses of the current housing finance system as well as the government strategies for addressing difficulties. 相似文献
26.
Michael Hubbard 《Food Policy》1995,20(6)
This paper outlines the conditions under which contracting of different types succeeds in the provision of public services to agriculture. It observes that performance contracting has been widely attempted in adjusting countries but generally with little success, since it is demanding of resources, flexibility and motivation in government under conditions where these are scarce. Examples are drawn from agricultural marketing. Given the largely private nature of the services to agriculture currently provided by the state, the long-term reform strategy should be market development. Contracting out and management contracting may have a role in this strategy, particularly in better managed adjusting economies. 相似文献
27.
This paper analyzes the properties of aggregate excess demand functions for economies with an arbitrary finite set of N commodities where agents face trading restrictions of a general, abstract form: their budget set is defined by K-dimensional planes in
N. It is shown that, if there are at least K agents in the economy, the only general property satisfied by the value of aggregate excess demand and its derivative, at any arbitrary point, is Walras Law. The result is established by considering an economy where agents' preferences are of a ‘generalized Leontief' type. 相似文献
28.
广东省现代物流正处于快速增长的阶段,如何协调物流供给与需求的矛盾,是现代物流发展过程中不可避免的问题。本文从物流的需求和供给的状况着手,分析了广东省现代物流存在供需不平衡问题的原因与表象,对匹配广东省现代物流的需求与供给提出了几条建议。 相似文献
29.
两个仓库的变质性物品的库存管理 总被引:1,自引:0,他引:1
建立了周期性补充的单一变质性物品(比如粮食、水果等)存贮在两个仓库中的确定性库存模型,对最优解的求解程序进行了讨论,最后举例进行了证明。 相似文献
30.