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31.
Innovative companies have a variety of instruments at their disposal to protect themselves from imitators, and this paper investigates the determinants of the protection choices with a focus on highly innovative respondents. While the patent system's aim is that firms apply to patent their innovations, especially the most important ones, theoretical results in the existing literature suggest that large innovations will rather be protected by secrecy because of the legal uncertainty surrounding intellectual property rights. In line with the predictions of their model, our probit analysis conducted using data from the Community Innovation Survey 4 shows that, in the intermediate goods industry, small innovations are patented while secrecy is used to protect large ones. For very innovative small firms, the share of innovative sales in total sales has a negative effect on patent application. These findings support the view that many innovative firms regard patent filing as no more secure than secrecy, which therefore limits the diffusion of knowledge.  相似文献   
32.
Prior research has identified individual characteristics that distinguish business owners from non-business owners. The researchers tested their contention that not every successful business owner can be characterized by such typical ‘entrepreneurial’ characteristics. Multiple analysis of variance on a unique data set of 194 business owners in the hospitality industry revealed that several individual characteristics discriminated between entrepreneurs and small business owners. Entrepreneurs possessed higher levels of independence, tolerance of ambiguity, risk-taking propensity, innovativeness, and leadership qualities, but not of market orientation and self-efficacy. It is concluded that ‘entrepreneurial’ characteristics identified in the literature may be useful predicting a specific type of business ownership. However, other criteria need to be developed in order to describe other groups of business owners operating in the service industries.  相似文献   
33.
L-performance with an application to hedge funds   总被引:1,自引:0,他引:1  
This paper introduces a new parametric fund performance measure, called the L-performance. The L-performance is an alternative to the Sharpe performance, which is commonly used in practice despite its inability to account for skewness and heavy tails of unconditional return distributions. The L-performance improves upon the Sharpe measure in this respect. Technically, it resembles the Sharpe measure in that it is defined as a ratio of the first- and second-order moments, which are the trimmed L-moments instead of the conventional (power) moments. The trimming parameters allow for focusing the L-performance on specific risk levels of interest, according to financial risk criteria. For illustration, a set of L-performances is computed for a variety of hedge funds. The empirical study shows the use of L-performance for fund ranking and return smoothing (manipulation) control.  相似文献   
34.
The determination of the distribution of aggregate losses is of crucial importance for an insurer. In this paper, we propose a technique for approximating the distribution of univariate and bivariate aggregate losses, which is solely based on their moments. Accordingly, this methodology can be implemented without any specific knowledge of the claim number or size distributions. The numerical examples presented herein indicate that the proposed approach constitutes a viable alternative to the commonly used recursive and FFT methods.  相似文献   
35.
Situated at the crossroads of Europe, Switzerland is an ideal example of a successful multicultural and multilingual society living in a harmonized way. This article provides a comprehensive review of Switzerland's historical development, political structure, economy, investment, and foreign trade environment. It aims at being a useful source of information for foreign businessmen and investors interested in doing business in Switzerland, one of the most advantageous business locations in Europe. © 2003 Wiley Periodicals, Inc.  相似文献   
36.
The article introduces the industry dimension into the Eaton-Kortum model of trade. Industries are linked with each other by domestic and international trade in intermediate goods. The model is parametrized using data for eight industries in 1989. It is used to perform several counterfactual simulations that are relevant to today's policy debates. First, the model is used to study the effects of the US–EU trade wars. It is found that trade wars have a greater negative effect on countries with large initial net export positions. It is also found that some trade war scenarios are more beneficial to the US while others to the EU. Second, the model is used to study the effects of trade barrier reductions between the high-income and middle-income countries. The results show that this trade liberalization tends to reinforce the pattern of trade according to technological comparative advantages. The results also show which industries should be targeted for barrier reductions depending on policy goals. The third set of simulations investigates spillovers from the technological growth in the US machinery industry. The results show how geography, technology, and industry links affect the propagation of this growth across countries and industries.  相似文献   
37.
This paper analyses the potential effect of local agro-environmental policies in promoting multifunctionality in a rural landscape, with a two-scale modelling framework: a regional scale for food demand and a local scale for the forces driving land use. The framework has been designed in four steps. First, the relative influence of the driving factors on the current land use pattern has been analysed. Two scenarios are designed that vary the external demand for the total land use, and alter more or less quickly the specific location factors that drive the landscape pattern. The first scenario considers trends in the external and internal driving forces. The second relies both on totally decoupled farm subsidies and unregulated housing growth. In both scenarios a local agro-environmental policy is introduced and we compare its consequences with the previous scenario's landscape pattern. The third step consists of a modelling exercise that analyses the likely outcome of each scenario on the development of land use patterns on a local scale. Last, these landscape patterns have been translated into ecological indexes that assess the effect of the policy options on the multifunctionality of the local landscape.  相似文献   
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