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1.
The dynamics of biomass growth implies that the yield of irrigated crops depends, in addition to the total amount of water applied, on irrigation scheduling during the growing period. Advanced irrigation technologies relax constraints on irrigation rates and timing, allowing us to better adjust irrigation scheduling to the varying needs of the plants along the growing period. Irrigation production functions, then, should include capital (or expenditures on irrigation equipment) in addition to aggregate water. We derive such functions and study their water-capital substitution properties. Implications for water demand and adoption of irrigation technologies are investigated. A numerical example illustrates these properties. 相似文献
2.
Honey is one of the important non-timber forest products consumed in the Democratic Republic of Congo (DRC) and, as such, an important source of income for many households. However, poor knowledge of buyers’ preferences in the marketing of honey presents a major challenge to the profitability of the honey enterprises. The research presented in this article identifies key consumer characteristics that influence the preferences of honey consumers in the DRC. The primary data source used in this analysis is drawn from a survey of 214 consumers. Results show that consumers who are married and have reached at least the level of secondary education have a strong preference for local forest and savannah honey. Those between the ages of 30 and 50 do not prefer honey from beekeeping, but would rather have it imported. We conclude that segmentation of the honey market and increasing consumer awareness must go in tandem in order to develop a good marketing strategy. 相似文献
3.
Amos A. Akinola 《Journal of Agricultural Economics》1986,37(3):395-404
Several studies on the process of diffusion of agricultural innovations have recently emerged in the literature. They serve as an important link between studies on the establishment of innovations and those in their impact on the economy. However, previous standard diffusion models used in the analysis of diffusion of agricultural innovations assume that the population of potential adopters is identical and that they are all imitators. This assumption may not be realistic in all cases. Hence, it is argued, in this study, that the population of potential adopters is not identical but consists of both innovators and imitators, and a model incorporating the two categories of potential adopters is employed. This model is also assessed against the standard diffusion model to test its superiority. Although the data on the diffusion of cocoa-spraying chemicals among Nigerian cocoa farmers fit the model well, the result of its statistical evaluation shows little or no improvement over the standard model. This may, however, be due to the nature and composition of the data employed and the need for further refinement of the model. 相似文献
4.
The study conducts a historical investigation of the linkages among the focused social learning of a few (such as ideas of feminists groups), the amplification of those ideas throughout the masses, and observable female images in ads. The Hegelian sublation or Aufgehoben dialectical framework is applied to deepen understanding of how ad strategies have reconciled multiple cultural conversations about the proper image and role of women through the years. The findings of the research reveal distinctive dialectical processes and strategies in the ever-evolving patterns of female images in ads. The results of the study indicate that the focused social learning of the few is amplified to the masses through more emergent ad female roles and images during prosperous and peaceful times and is thwarted during times of national distress. 相似文献
5.
Amos Nadan 《The Economic history review》2021,74(1):34-59
The unfounded belief that there was a peasant commune in the Levant very similar to the Russian mir, and that it was inefficient, precluded historians from understanding the true role of the institution of mushā? in this region. The mushā? land title represented the attachment of a particular community to specific plots of land. In this context, ‘community’ often meant nuclear and extended families in suprahouseholds, as well as the entire village. People in these communities tended to derive income from land according to recognized arrangements such as mutual use of grazing lands, and joint or individual cultivation with or without land repartition among cultivators. The comparison with mir was relevant only for one form of the institution, namely, repartitioned mushā?. Redistribution or repartition varied according to specific ‘factors of production’ or to informal and formal property rights. It did not prove less efficient than the reformed, individualized system of land management, and was possibly more effective in resisting laws that allowed the seizure of lands that had not been cultivated for three years. All forms of mushā? required greater communal mutual support and responsibility, which significantly reduced risks in times of crisis. 相似文献
6.
7.
Jane Kolodinsky Meaghan Murphy Amos Baehr Seth Lesser 《International Journal of Consumer Studies》2005,29(2):119-124
Rent‐to‐own enterprises represent a lucrative and rapidly growing industry. They are of particular concern to social service agencies, policy makers and consumers because they target a vulnerable, economically disadvantaged segment of the population. This article presents an investigation of a major player in the industry in one US state that fell under scrutiny by the courts because of a question of whether it is a retail enterprise covered by truth in lending legislation. Findings indicate that the average time price differentials charged by the largest retailer in this state exceed by more than three times the regulated 30% cap on interest rates. Rent‐to‐own is an example where regulation must be put into place so consumers can make more informed decisions. Such regulation, however, must be accompanied by financial literacy education that will further empower vulnerable consumers in the marketplace. 相似文献
8.
A number of factors must be considered in facility location decisions. Recent research on job design suggests that the effects jobs may have on quality of work life and quality of life in general should be considered in facility location decisions in addition to other normal factors. The present study was designed to examine quality of work life and quality of life factors of residents in a low income and low education area. The intent was to determine what types of jobs might have the most positive effect on people in this type of region. Data were collected from 409 households in a low income/education region. The results showed that people from this region were as satisfied with their quality of work life and quality of life as people in other regions with better jobs, higher incomes, and better general life situations. Results are discussed in light of facility location decisions and types of jobs having the most positive impact. 相似文献
9.
Amos Zemel 《Resource and Energy Economics》2012,34(2):188-197
A model of pollution control subject to two types of uncertainty is presented. First, the natural decay of the pollution stock follows stochastic dynamics that drives a diffusion pollution process (“stochastic uncertainty”). Moreover, the damage coefficient which determines the amount of damage corresponding to each pollution stock can undergo an abrupt increase at some uncertain future time (“event uncertainty”). The model admits an explicit and simple dynamic characterization of the optimal emission rule and the ensuing pollution process. When only one type of uncertainty is permitted (by setting either the variance of the stochastic process or the hazard rate for the damage increase to zero) it acts to promote the intuitive response of precaution. However, allowing the two types to interact gives rise to a non-monotonic behavior, whereby increasing the stochastic variance first enhances, then diminishes the response to the hazard. The results confirm and expand recent findings based on discrete-time formulations. 相似文献
10.