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31.
Gladwin's** main contention is that women provide most of the agricultural labor in sub-Saharan Africa and because much of this labor is oriented to food production for home consumption, the effects of structural adjustment programs on them and the children they work to feed are likely to be different than on men who produce crops for commercial and export production. Her specific hypothesis for Malawi is that the removal of the fertilizer subsidy affects women farmers more than men farmers because it reduces fertilizer use on local maize. As part of the structural adjustment program, a major purpose of removing the fertilizer subsidy is to reallocate resources from food production for domestic consumption to cash crop production for export. In Gladwin's analysis, men farmers produce hybrid maize and tobacco for export and women produce the subsistence food crop, local maize. Gladwin's main contention is probably correct. For the Malawi case, the presentation does not support the hypothesis because two of the major underlying assumptions are inappropriate and the evidence provided is inconclusive. This comment proceeds by discussing the two assumptions and corresponding evidence. The purpose of this comment is not to contradict the hypothesis, but to clarify the Malawi situation and to suggest that a different analytical approach is needed in that context.  相似文献   
32.
This article makes use of unique administrative data to expand the understanding of the role women’s intermittency decisions play in the determination of her wages. We demonstrate that treating intermittency as exogenous significantly overstates its impact. The intermittency penalty also increases in the education level of the woman. The penalty for women with a high school degree with an average amount of intermittency during 6 years after giving birth to her first child is roughly half the penalty for college graduates. We also demonstrate the value of making use of an index to capture multiple dimension of the intermittency experience, and illustrate the importance of firm dynamics in the determination of a woman’s wage.  相似文献   
33.
We hypothesize that institutions such as agricultural cooperatives influence regional levels of variety diversity through input supply, processing or marketing functions. This diversity can also affect yield, a partial measure of crop productivity. We test these hypotheses with data from southern Italy, a mega-diversity spot and centre of diversity for durum wheat. Cooperatives in the southern regions of Italy process farmers’ harvests of durum wheat into bread, label it, and sell it locally. In this relatively marginalized region of the country, cooperatives enable farmers to capture more of the value of the final product and reduce marketing costs. To test the hypothesis, we apply a two-stage estimation approach with a Cobb-Douglas production function and panel data analysis. Findings suggest that the density of cooperatives in a region is associated with greater spatial diversity in wheat varieties grown, and that, over a 14-year period, this diversity positively affected crop yields.  相似文献   
34.
We examine whether predictable outcomes of the National Basketball Association playoff games can generate increased trading of firms headquartered in the geographic area of the participating teams. We find statistically significant increased trading before games and this effect is more pronounced and persistent for games with more predictable outcomes, for predictable losses more than wins, and for more critical games. We also find that this effect is more pronounced for firms that are more vulnerable to shifts in investor sentiment and we find weak evidence that trading leads to price effects. The results are consistent with the hypothesis that predictable sentiment can drive investor behavior.  相似文献   
35.
Tourist perception of environmental impact   总被引:1,自引:0,他引:1  
This study investigated the relationship between measured environmental impact and tourists' perception of it, at ten sites in Central Australia. A positive relationship between annual visitation to a site and measurable impact was found, despite the small amount of tourism impact in the area. Tourists' perception of impact varied in degree. A majority identified relevant environmental threats (tourism or introduced species), while a smaller proportion suggested management options to address track spreading, the major impact identified by this study. Overall, environmental conditions were rated lower at sites with a higher intensity of impacts, reflecting some tourists' ability to distinguish impacts.  相似文献   
36.
Crop landraces contribute to food security and agricultural research that supports productivity or enhances product quality. The few extant landraces still grown in Hungary are found in home gardens, which are subsistence-oriented, small-scale family farms managed with traditional practices. A pluralistic economics methodology was developed to analyse the prospects of including landraces and home gardens in Hungary's National Rural Development Plan. The methodology draws from three fields of economic inquiry: institutional economics, environmental economics and agricultural economics. Data were collected using qualitative and quantitative approaches from over 300 farmers across 22 communities in three regions. This paper summarizes the methodology and highlights its advantages. A synopsis of findings is also reported.  相似文献   
37.
We evaluate the shareholder wealth effects surrounding the passage of the Sarbanes-Oxley Act (SOX). While other studies have also measured wealth effects, none has separately examined technology firms. We discuss the unique characteristics of technology firms and assess whether technology firms are differentially affected. Our results show the portfolio of 218 technology firms experienced significantly more favorable wealth effects than the portfolio of 940 non-technology firms in response to events indicating stringent reform legislation. The cross-sectional analyses suggest that board independence, growth expectations, and R&D expenditures are influential factors in the differential stock price response of technology firms. Across our full sample of 1,158 firms, we find that wealth effects are less favorable for firms that likely will incur high compliance costs and more favorable for firms that are expected to benefit from improved governance and improved transparency.  相似文献   
38.
We predict the potential demand of smallholder farmers for genetically transformed varieties of a food crop, the cooking banana of the East African highlands. Farmer demand for planting material is derived in an agricultural household model that accounts for variety traits and missing markets. The demand for candidate host varieties is predicted using a Zero‐Inflated Poisson (ZIP) regression system. The fitted model is used to illustrate the sensitivity of farmer demand for improved planting material to (a) investments in research and development, represented by the effectiveness of gene insertion and expression, and (b) other public investments in education, extension, and market infrastructure that support diffusion. By comparing the characteristics of agricultural households we demonstrate that the choice of host variety can have social consequences, favoring one rural population compared with another. Clients for transgenic banana planting material are likely to be poorer, subsistence‐oriented farmers in areas greatly affected by biotic constraints. A model of this type might be useful in assessing the investments needed to support the systematic dissemination of improved planting material. The approach can be generalized to other crop biotechnologies for smallholder farming systems, particularly in developing economies.  相似文献   
39.
We derive input demand functions for fertiliser and hybrid seed, testing for the combined and separate effects of income from non‐farm sources and agricultural wage labour among smallholder maize farmers in Kenya. More income from off‐farm sources, and specifically non‐farm sources, competes with maize intensification, particularly in more productive areas where use rates are higher. In less productive areas, where households rely more on off‐farm income and input use in maize is extremely low, agricultural wage labour reduces the likelihood that fertiliser is applied, but when used, has a positive effect on quantities purchased of both seed and fertiliser.  相似文献   
40.
In less favoured areas such as the highlands of Ethiopia, farmers manage risk through land allocation to crops and varieties since they cannot depend on market mechanisms to cope. They also grow traditional varieties that are genetically diverse and have potential social value. Supporting the maintenance of crop and variety diversity in such locations can address both the current needs of farmers and future needs of society, though it entails numerous policy challenges. We estimate a model of crop and variety choice in a theoretical framework of the farm household model to compare the determinants of crop and variety diversity, revealing some of these policy considerations. Farm physical features and household characteristics such as wealth and labour stocks have large and significant effects on both the diversity among and within cereal crops, varying among crops. Policies designed to encourage variety diversity in one cereal crop may have opposing effects in another crop. Trade-offs between development-related factors and diversity in this resource-poor system are not evident, however. Market-related variables and population density have ambiguous effects. Education positively influences cereal crop diversity. Growing modern varieties of maize or wheat does not detract from the richness or evenness of these cereals on household farms.  相似文献   
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