全文获取类型
收费全文 | 2854篇 |
免费 | 162篇 |
专业分类
财政金融 | 512篇 |
工业经济 | 212篇 |
计划管理 | 521篇 |
经济学 | 700篇 |
综合类 | 30篇 |
运输经济 | 40篇 |
旅游经济 | 82篇 |
贸易经济 | 526篇 |
农业经济 | 165篇 |
经济概况 | 210篇 |
信息产业经济 | 1篇 |
邮电经济 | 17篇 |
出版年
2023年 | 22篇 |
2022年 | 19篇 |
2021年 | 37篇 |
2020年 | 62篇 |
2019年 | 95篇 |
2018年 | 119篇 |
2017年 | 145篇 |
2016年 | 114篇 |
2015年 | 75篇 |
2014年 | 142篇 |
2013年 | 334篇 |
2012年 | 132篇 |
2011年 | 154篇 |
2010年 | 124篇 |
2009年 | 152篇 |
2008年 | 125篇 |
2007年 | 105篇 |
2006年 | 87篇 |
2005年 | 78篇 |
2004年 | 60篇 |
2003年 | 73篇 |
2002年 | 69篇 |
2001年 | 50篇 |
2000年 | 37篇 |
1999年 | 31篇 |
1998年 | 46篇 |
1997年 | 49篇 |
1996年 | 43篇 |
1995年 | 27篇 |
1994年 | 34篇 |
1993年 | 37篇 |
1992年 | 31篇 |
1991年 | 17篇 |
1990年 | 20篇 |
1989年 | 18篇 |
1988年 | 15篇 |
1987年 | 10篇 |
1986年 | 11篇 |
1985年 | 26篇 |
1984年 | 20篇 |
1983年 | 19篇 |
1982年 | 13篇 |
1981年 | 20篇 |
1980年 | 15篇 |
1979年 | 19篇 |
1978年 | 12篇 |
1977年 | 19篇 |
1976年 | 12篇 |
1975年 | 11篇 |
1971年 | 6篇 |
排序方式: 共有3016条查询结果,搜索用时 265 毫秒
91.
The German Insurance Association estimates a yearly amount of damage of € 1.5?bn to German motor vehicle insurance companies because of systematic fraud by insurance holders. It is supposed that about 10% of submitted claim applications contain manipulated data, therefore insurance companies are forced to complete a detailed and cost intensive case-by-case review of each single application. An alternative method to detect fraud in empiric data is the method of digital analysis based on Benford’s law. The Benford method uses a mathematical law of specific logarithmic distribution attributes of first digits. According to this approach, the data of a Benford set confirm with the expected digit distribution, if the data is not manipulated, whereas fraudulent interventions lead to a deviation from Benford’s law. Hence, until now there has not been any investigation whether the Benford method can also be applied on insurance data. The present article analyses a dataset consisting of more than 120,000 damage claim applications to answer this question as well as to identify the impact of specific characteristics on the probability of fraud contained in claim applications, such as the repair of the vehicle in a franchised or an independent workshop, the vehicle brand or the examination by insurance companies experts. Indeed it could be shown that Benford’s Law is only applicable on second digits of insurance data, but delivers very strong results here: All results of the considered characteristics could be verified by plausible arguments. For this reason insurance companies can benefit from making use of the Benford method to identify those claim applications with a high probability of fraud, which should then be reviewed in more detail so that resources can be allocated in a much more cost efficient way. 相似文献
92.
Although the fanciful notion that the Black Death bypassed the Low Countries has long been rejected, nevertheless a persistent view remains that the Low Countries experienced only a ‘light touch’ of the plague when placed in a broader European perspective, and recovered quickly and fully. However, in this article an array of dispersed sources for the Southern Netherlands together with a new mortmain accounts database for Hainaut show that the Black Death was severe, perhaps no less severe than other parts of western Europe; that serious plagues continued throughout the fourteenth and fifteenth centuries; and that the Black Death and recurring plagues spread over vast territories—including the countryside. The previous conception of a ‘light touch’ of plague in the Low Countries was created by the overprivileging of particular urban sources, and a failure to account for the rapid replenishment of cities via inward migration, which obscured demographic decimation. We suggest that the population of the Low Countries may not have recovered faster than other parts of western Europe but instead experienced a greater degree of post‐plague rural–urban migration. 相似文献
93.
Benn Lawson Daniel Krause Antony Potter 《Journal of Product Innovation Management》2015,32(5):777-792
Suppliers play an increasingly central role in helping firms achieve their new product development (NPD) goals. The literature implicitly assumes that suppliers are able to meet or exceed the quality standards and technological expectations of the firm, and yet, in practice, suppliers often lack the technological capabilities needed to undertake collaborative NPD. In such situations, a firm may choose to intervene and actively develop the supplier's technological and product development capabilities. We develop a theoretical framework that conceptualizes supplier development activities within interorganizational NPD projects as part of a bilateral knowledge‐sharing process: design recommendations, technical specifications, and new technology flow from supplier to the firm, and in turn, the firm can implement supplier development activities to upgrade the supplier's technological capabilities. Antecedents (supplier responsibility, skills similarity, single sourcing strategy) and consequences of supplier development activities (on supplier, product, and project performance) are examined using a sample of 153 interorganizational NPD projects within UK manufacturers. We find broad support for our hypotheses. In particular, we show that the relational rents (in the form of improved product and project performance) attained from supplier development activities in new product development are not achieved directly, but rather indirectly, via improvements in the supplier's creative and technological capabilities. Our results emphasize the importance of adopting a strategic view of the potential returns available from investing in the NPD capabilities of key suppliers, and provide clues about underlying reasons for the suboptimal experiences of many companies' collaborative NPD projects. 相似文献
94.
Environmental and Resource Economics - The purpose of this essay is to bring attention to some serious problems that exist in econometric application of fisheries economic models. These problems in... 相似文献
95.
Jennifer L. Rice Daniel Aldana Cohen Joshua Long Jason R. Jurjevich 《International journal of urban and regional research》2020,44(1):145-165
As local governments and corporations promote ‘climate friendliness’, and a low-carbon lifestyle becomes increasingly desirable, more middle- and upper-income urban residents are choosing to live near public transit, on bike- and pedestrian-friendly streets, and in higher-density mixed-use areas. This rejection of classical forms of suburbanization has, in part, increased property values in neighborhoods offering these amenities, displacing lower-income, often non-white, residents. Increased prevalence of creative and technology workers appears to accelerate this trend. We argue that a significant and understudied socio-environmental contradiction also occurs where the actual environmental outcomes of neighborhood transformation may not be what we expect. New research on greenhouse gas emissions shows that more affluent residents have much larger carbon footprints because of their consumption, even when reductions in transportation or building energy emissions are included. We describe an area in Seattle, Washington, the location of Amazon's headquarters, experiencing this contradiction and show a distinct convergence of city investments in low-carbon infrastructure, significant rises in housing prices and decreases in lower-income and non-white residents. We conclude with a discussion of a range of issues that require more attention by scholars interested in housing justice and/or urban sustainability. 相似文献
96.
We provide survey evidence that personal values have an impact on individual investment decisions, in particular preferences for socially responsible investing. Our findings show that there is a positive link between altruistic values and the relative importance of social responsibility. This effect is stronger when individuals believe that they can make a positive social or environmental impact with their investments, or when they feel morally obliged to invest responsibly. If altruistic individuals associate responsible investments with higher returns, it decreases their motivation to invest responsibly. Egoistic values are negatively associated with the decision to invest responsibly, unless individuals associate responsible investing with higher returns. 相似文献
97.
Daniel Ehls Sara Polier Cornelius Herstatt 《Journal of Product Innovation Management》2020,37(5):405-430
The field of external knowledge search for innovation has a long tradition and has inspired several schools of thought resulting in a rich and burgeoning body of research. However, the field suffers from two key limitations. First, the pluralism of research across multiple disciplines impedes our attention to the field as a whole, including its intellectual structure and core ideas. Second, recent developments in the business environment and key new ideas in the field complement taken-for-granted approaches and provide new opportunities for knowledge search. Based on a systematic co-citation analysis, we provide a reflective review of the literature and make several contributions. We integrate existing research across disciplines and offer a synthesis of a fragmented research landscape to present a global view of the field. Moreover, we propose a novel external search concept and introduce the idea of “decoupled search.” Leveraging our synthesis and conceptualization further, we recommend future research directions for the entire field of external knowledge search for innovation. 相似文献
98.
We compile an IO toolkit for aggregative games with positive and normative comparative statics results for asymmetric oligopoly in the short and long run. We characterize the class of aggregative Bertrand and Cournot oligopoly games, and the subset for which the aggregate is a summary statistic for consumer welfare. We close the model with a monopolistically competitive fringe for long-run analysis. Remarkably, we show strong neutrality properties in the long run across a wide range of market structures. The results elucidate aggregative games as a unifying principle in the literature on merger analysis, privatization, Stackelberg leadership, and cost shocks. 相似文献
99.
This paper considers the assignment of tradable permits—representing property rights of an environmental good—to community members who are harmed by pollution generated by firms. These community members can in turn sell permits to polluters according to their personal preferences. For a special case with a sole household, market transactions between the household and polluters achieve an efficient pollution level. However, for a group of households, the decentralized market solution fails to yield social efficiency because of competitive consumption of the environmental goods. We design a revenue-sharing mechanism akin to unitization, under which market transactions also achieve efficient resource allocation. Importantly, in some cases, efficiency can be achieved even when regulators are ignorant of the private valuation of the environmental good. 相似文献
100.