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311.
Patterns and drivers of post-socialist farmland abandonment in Western Ukraine   总被引:10,自引:0,他引:10  
Farmland abandonment restructures rural landscapes in many regions worldwide in response to gradual industrialization and urbanization. In contrast, the political breakdown in Eastern Europe and the former Soviet Union triggered rapid and widespread farmland abandonment, but the spatial patterns of abandonment and its drivers are not well understood. Our goal was to map post-socialist farmland abandonment in Western Ukraine using Landsat images from 1986 to 2008, and to identify spatial determinants of abandonment using a combination of best-subsets linear regression models and hierarchical partitioning. Our results suggest that farmland abandonment was widespread in the study region, with abandonment rates of up to 56%. In total, 6600 km2 (30%) of the farmland used during socialism was abandoned after 1991. Topography, soil type, and population variables were the most important predictors to explain substantial spatial variation in abandonment rates. However, many of our a priori hypotheses about the direction of variable influence were rejected. Most importantly, abandonment rates were higher in the plains and lower in marginal areas. The growing importance of subsistence farming in the transition period, as well as off-farm income and remittances likely explain these patterns. The breakdown of socialism appears to have resulted in fundamentally different abandonment patterns in the Western Ukraine, where abandonment was a result of the institutional and economic shock, compared to those in Europe's West, where abandonment resulted from long-term socio-economic transformation such as urbanization and industrialization.  相似文献   
312.
The present study examines images that wine evokes among frequent and non-frequent wine consumers, as well as factors driving wine choices (e.g., type of wine, country/region) and the level of consumption of wines from different regions?/?countries. The findings indicate that regardless of respondents' wine consumption level, wine evokes various positive memories, particularly related to pleasure, special occasions, relaxation food, and travel. However, lack of consumption experience of wines from different origin is noticed among the more frequent consumers. The importance of education is therefore emphasised to create a long-term link between the wine product and consumers.  相似文献   
313.
This study empirically tests a structural model of factors affecting consumers' online purchase intentions for travel products. The findings indicate that information quality, service quality, and system quality are valid measurements to evaluate the quality of travel-oriented website designs. In terms of travelers' perceptions, convenience, value, and merchandise options are three effective measurements of travelers' attitudes toward purchasing travel products online. Quality of travel website design, travelers' attitudes, and customers' satisfaction demonstrate significant influence on travelers' purchase intentions. Travelers' attitudes and customers' satisfaction also serve as strong mediators for the links between quality of travel website design and purchase intentions. Future research can capitalize on this study as a basis to formulate other models or to create a new model to test tactics that can increase travelers' repurchase intentions and strengthening consumers' e-loyalty.  相似文献   
314.
Mindfulness is a relatively new theoretical area that has received little research focus. This is surprising, considering the wealth of benefits to individuals and businesses who adopt a mindful philosophy. The aim of this study was to reduce this gap in knowledge by attempting to understand how mindfulness affects tourists’ experiences while holidaying in a popular tourist destination, such as Dubai. Results suggested that mindfulness appears to occur indiscriminately and, almost, haphazardly. Empirical results of the study revealed that mindfulness was a likely occurrence regardless of visitor demographics, and that mindfulness would impact what visitors remembered and why.  相似文献   
315.
Cooperation can benefit and hurt firms at the same time. An important question then is: when is it better to cooperate? And, once the decision to cooperate is made, how can an appropriate partner be selected? In this paper we present a model of inter-firm cooperation driven by cognitive distance, appropriability conditions and external knowledge. Absorptive capacity of firms develops as an outcome of the interaction between absorptive R&D and cognitive distance from voluntary and involuntary knowledge spillovers. Thus, we offer a revision of the original model by Cohen and Levinthal (Econ J 99(397):569–596, 1989), accounting for recent empirical findings and explicitly modeling absorptive capacity within the framework of interactive learning. We apply that to the analysis of firms’ cooperation and R&D investment preferences. The results show that cognitive distance and appropriability conditions between a firm and its cooperation partner have an ambiguous effect on the profit generated by the firm. Thus, a firm chooses to cooperate and selects a partner conditional on the investments in absorptive capacity it is willing to make to solve the understandability/novelty trade-off.  相似文献   
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We investigate experimentally whether collective choice environments matter for individual attitudes to ambiguity. In a simple two-urn Ellsberg experiment, one urn offers a 45 % chance of winning a fixed monetary prize while the other offers an ambiguous chance. Participants choose either individually or in groups of three. Group decision rules vary in the level of individual responsibility for the others’ payoffs: the collective choice is taken by majority, randomly delegated to two group members, or randomly delegated to a single group member. Although most participants display consistent ambiguity attitudes across their decisions, taking responsibility for the others tends to foster ambiguity aversion.  相似文献   
319.
The Savannah River Laboratory is using robots to improve safety and reduce personnel radiation exposure in the nuclear process environment. This paper reviews several successful applications at this site. A detailed discussion is presented on an application to transfer materials in a line of shielded radiation work cells.  相似文献   
320.

The objective of this study was to unravel the challenges confronting women of color (WoC)-owned small and medium-sized enterprises (SMEs) in the United States. This is based on findings that most WoC-owned SMEs fail within the first few years of establishment. The impact of the global financial crisis resulting from the COVID-19 pandemic on WoC-owned SMEs was also explored. System Dynamics (SD) is a computational modeling approach useful for understanding changes in a system over time and is applied in this study to illustrate WoC entrepreneurs' navigation through the startup and maturation of SMEs. The authors calibrated and validated the model with publicly available data. Findings revealed that more emphasis should be placed on failure reduction in the early years of establishment of these businesses. Also, there is the need for early intervention rather than focusing on the improvement of the successful business exit from the system. Results indicated that the creation of new businesses by WoC after the failure of existing businesses produced an increase in the number of failed enterprises. The authors assert that attention must be paid at the individual level through support to the entrepreneur. This study contributes to the extant literature by providing the first known SD model useful in depicting the SME system for WoC entrepreneurs in the US. The model serves as a potentially useful tool for informing effective policy making, education, and programmatic approaches to support the success of WoC entrepreneurs in the US.

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