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排序方式: 共有105条查询结果,搜索用时 15 毫秒
1.
The paper uses a three-factor (capital, low- and high-skill labor), two-household (low- and high-skill individuals), two-sector trade model to analyze the determinants of voter attitudes towards immigration under direct democracy, and to identify factors that would be coherent with both the observed increase in the skilled–unskilled wage differential and the stiffening attitudes towards low-skill capital-poor immigration. If the import-competing sector is intensive in the use of low-skill labor, and capital is the middle factor, an improvement in the terms of trade or neutral technical progress in the exporting sector leads nationals to oppose immigration of capital-poor low-skill households. An increase in income inequality is also likely to stiffen attitudes towards this type of capital-poor, low-skill immigration prevalent in Europe until recently.  相似文献   
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Mortality forecasting has crucial implications for insurance and pension policies. A large amount of literature has proposed models to forecast mortality using cross-sectional (period) data instead of longitudinal (cohort) data. As a consequence, decisions are generally based on period life tables and summary measures such as period life expectancy, which reflect hypothetical mortality rather than the mortality actually experienced by a cohort. This study introduces a novel method to forecast cohort mortality and the cohort life expectancy of non-extinct cohorts. The intent is to complete the mortality profile of cohorts born up to 1960. The proposed method is based on the penalized composite link model for ungrouping data. The performance of the method is investigated using cohort mortality data retrieved from the Human Mortality Database for England & Wales, Sweden, and Switzerland for male and female populations.  相似文献   
3.
The paper considers a two-country model of overlapping generation heterogenous economies with intergenerational transfers carried out in the form of bequest and investment in human capital. We examine in competitive equilibrium the transitory and long-run effects of capital markets integration. First, we explore how the regime of public education affects the dynamics of the integrated economy. Second, we study the effects of capital markets integration, in equilibrium, on the intragenerational income distribution in both the host and investing country.  相似文献   
4.
Suicides and trespassing accidents result in more than 3800 fatalities in Europe, representing 88% of all fatalities occurring within the EU railway system. This paper presents a problem-solving model, which consists of a multistep approach structuring the analysis of a suicide or trespass-related problem on the railways. First, we present the method used to design, evaluate and improve the problem-solving model. Then we describe the model in detail: it comprises six steps with several subsequent actions, and each action is approached through a checklist of prompting questions and possible answers. At the end, we discuss the added value of this model for decision makers and its usability in the selection of optimal prevention measures.  相似文献   
5.
Previous researchers could not find empirical support for a relationship between the characteristics of the data-processing charge-back system and the impacts on the organization. The lack of empirical evidence may be caused by a missing variable problem. This paper proposes an intermediary variable: the use of the charge-back system. This research finds an empirical relationship between the characteristics of the system and its use. A pilot study was conducted to investigate the conditions of use of data-processing charge-back systems in organizations. For operations costs, results indicate that the variability of the charges, user's authority over data-processing activities and user involvement in the budgetingprocess are the important factors in explaining the use of a budget report. As for development costs, the quality of the information on the charges and user involvement in the budgeting process are the most important factors. However, the authors wish to caution readers that this is a pilot study with a convenience sample of twenty-five questionnaires collected from seven firms. Résumé Par le passé, les chercheurs n'ont pu établir de support empirique pour la relation existant entre les caractéristiques d'un système informatique d'imputation des coǔts et son impact sur l'entreprise. Le manque de preuves empiriques peut ětre dǔ à un problème de variable manquante. Cette étude propose donc une variable intermédiaire: L'usage du système d'imputation des coǔts. Cette recherche a établi une relation empirique entre les caractéristiques du système et son usage. Une étude pilote a été menée pour étudier les conditions d'utilisation de systèmes informatiques d'imputation des coǔts dans les entreprises. Quant aux frais d'exploitation, les résultats indiquent que la variabilité des imputations, le contrǔle de l'utilisation sur les activités informatiques et le rǒle de l'utilisateur dans l'élaboration du budget constituent des facteurs importants dans la justification d'un rapport budgétaire. Quant aux frais de développement, la qualité des données relatives aux frais et le rǒle de l'utilisateur dans l'élaboration du budget sont les facteurs les plus importants. Les auteurs désirent cependant prévenir les lecteurs qu'il s'agit d'une étude pilote comportant un échantillon de 25 questionnaires recueillis auprès de 7 entreprises.  相似文献   
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Sustainable land use planning is crucial for realizing the aim of food security and for combating land degradation in the Sahel. A participatory land use planning workshop was organised in a village in the eastern region of Burkina Faso to investigate land use problems, their causes, effects and possible solutions. Participatory research tools and GIS were combined to get insight into possible conflicts or synergies between different land use options as mapped by different ethnic groups. Pictograms were used to locate alternative land use options on the map, after which they were digitised for analysis with GIS. The workshop confirms the importance of integrating scientific and local knowledge to develop concrete options for sustainable land use that fit to local realities and aspirations. Local people are knowledgeable about the driving forces behind land degradation, they take actions to combat the effects of degradation, and they have concrete ideas about alternative land use options. The use of GIS proved its added value in the participatory process of integrated land use planning. The maps that were produced also facilitate discussions between community members, researchers and government representatives at the regional level, both regarding current land use problems and regarding alternative options as perceived by the local population.  相似文献   
9.
Intangibility has long been studied as a unidimensional construct with the focus being placed upon the physical element. This paper explores the effects of three unique intangibility dimensions on a consumer's ability to evaluate goods and services, and the perceived risk (PR) associated with the transaction. The authors examine these relationships in purchase environments that include both traditional bricks-and-mortar retailers and the Internet. Their investigation further incorporates prior knowledge as a moderating factor into the proposed framework. This allows for a thorough comparison of the effects and relationships that exist between intangibility and its consequences in general, evaluation difficulty (ED) and perceived risk (PR) in particular. The authors develop hypotheses pertaining to the proposed model and test them with two experiments. The empirical results are broadly supportive of the hypotheses. Theoretical and managerial implications to the services marketing literature are discussed.  相似文献   
10.
We study competition in two-sided markets with a common network externality rather those than with the standard inter-group effects. This type of externality occurs when both groups benefit, possibly with different intensities, from an increase in the size of one group and from a decrease in the size of the other. We explain why common externality is relevant for the health and education sectors. We focus on symmetric equilibrium and show that when the externality itself satisfies a homogeneity condition then platforms’ profits and price structures have some specific properties. Our results reveal how the rents coming from network externalities are shifted by platforms from one side to the other, according to the homogeneity degree. Prices are affected but in such a way that platforms only transfer rents from consumers to providers. In the specific but realistic case where the common network externality is homogeneous of degree zero, platforms’ profits do not depend on the intensity of the (common) network externality. This result differs from those of the two-sided models, which deal with standard positive inter-group network externality.  相似文献   
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