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681.
Motivated by the asset–liability management problems under shortfall risk constraints, we consider in a general discrete-time framework the problem of finding the least expensive portfolio whose shortfalls with respect to a given set of stochastic benchmarks are bounded by a specific shortfall risk measure. We first show how the price of this portfolio may be computed recursively by dynamic programming for different shortfall risk measures, in complete and incomplete markets. We then focus on the specific situation where the shortfall risk constraints are imposed at each period on the next-period shortfalls, and obtain explicit results. Finally, we apply our results to a realistic asset–liability management problem of an energy company, and show how the shortfall risk constraints affect the optimal hedging of liabilities.  相似文献   
682.
In this article, the authors investigate competitive firm behaviors in a two-firm environment assuming linear cost and demand functions. By introducing conjectural variations, they capture the different market structures as specific configurations of a more general model. Conjectural variations are based on the assumption that each firm believes its own strategy influences its rival's strategy. Firms derive their optimal choice from these exogenous conjectures, under the form of a conjectural best-response function. The authors’ approach fully encompasses the standard measures of market power (the Lerner Index) and concentration (the Herfindahl Index), both depending on the conjectural variations. They finally represent, analytically and graphically, the equilibrium strategies and the associated indexes in a unified framework for any level of competition, ranging from perfect competition to collusion.  相似文献   
683.
This paper explores the interplay between product market, strategic factor market, and resource development. More competition in the product market makes resource buyers bid higher for resources, as the value of trying to preempt the resources is higher. Holding other initial conditions constant, resources are developed more in industries with factor markets than in industries without. When buyers of resources cannot integrate more than one resource, developers choose to develop either at a low or high level, generating a type of heterogeneity that would not arise otherwise. Changes in the intensity of competition in the product market can have the opposite effect on resource development efforts depending on the presence or absence of factor markets. Copyright © 2013 John Wiley & Sons, Ltd.  相似文献   
684.
The objective of this paper is to explore how the various stages of consciousness development of top managers can influence, in practical terms, their abilities in and commitment to environmental leadership in different types of SMEs. A case study based on 63 interviews carried out in 15 industrial SMEs showed that the organizations that displayed the most environmental management practices were mostly run by managers at a post-conventional stage of consciousness development. Conversely, the SMEs that displayed less sustainable environmental management practices were all run by managers at conventional stages of development. Drawing upon diverse examples of environmental leadership, this paper analyzes the reasons why the stages of post-conventional consciousness development of top managers seem to foster corporate greening in SMEs. The study also sheds light on the key values and abilities associated with both environmental leadership and the upper-stages of consciousness development, which include a broader and systemic perspective, long-range focus, integration of conflicting goals, collaboration with stakeholders, complexity management, collaborative learning, among others.  相似文献   
685.
This paper illustrates the potential of a decision-support system developed for Belgium by a consortium of universities and a private firm, in the framework of a public call made by the Ministry of the Interior. The system is designed to provide the Belgian emergency management administration with a complete decision-aid tool for the location of fire stations. The originality of the project is that it includes a risk-modeling approach developed at a national scale. This analysis involves a multiscale GIS that includes a thorough representation of the physical, human and economic spatial realities, a risk-modeling approach, an adequate optimal location and allocation model (taking into account both queuing and staffing problems). The final result is an interactive operational tool for defining locations, equipment allocations, staffing, response times, the cost/efficiency trade-off, etc. This flexible tool can be used in an assessment as well as a prospective context. It has been used to draw a national reorganization plan for fire stations that started being implemented in 2010.  相似文献   
686.
In this paper, we use p-best response sets—a set-valued extension of p-dominance—in order to provide a new sufficient condition for the robustness of equilibria to incomplete information: if there exists a set S which is a p-best response set with , and there exists a unique correlated equilibrium μ* whose support is in S then μ* is a robust Nash equilibrium.  相似文献   
687.
In this paper we look at the relationship between crime and economic incentives in a different way to other work in the economics of crime field. We look at empirical models where a toughening of the unemployment benefit regime can be used to study how people on the margins of crime may react to changes in economic incentives. We present three sets of complementary evidence, all of which show that toughening the benefit regime can have an unintended consequence, namely increases in crime. The first approach presents quasi-experimental evidence, looking at crime rates in areas of England and Wales before and after the introduction of a new, tougher unemployment benefit programme—the Jobseekers Allowance (JSA)—in October 1996. The second approach considers qualitative evidence on individuals affected by the change in the benefit regime. The third relates changes in area crime rates to post-JSA sanctions. Each of these approaches uncovers evidence of higher crime occurring as a consequence of the benefit reform.
Stephen MachinEmail:
  相似文献   
688.
This paper investigates the extent to which certification auditing can contribute to the realization of organizational accountability for sustainable development. A theoretical framework based on a critical analysis of financial and ISO auditing practices is proposed to shed light on the misconceptions, paradoxes and rational myths underlying the institutionalization of auditing practices in the area of corporate sustainability. As such, this paper casts doubt on the imagery of impartiality, rigor and accountability projected by organizations through discourses of certification. It also illustrates the pertinence of studying the auditing function from a cross‐disciplinary viewpoint, and of paying attention to the processes by which auditing travels from one discipline to another. Copyright © 2010 John Wiley & Sons, Ltd and ERP Environment.  相似文献   
689.

Drawing on a burgeoning academic literature devoted to issues of institutionalised cross‐border regionalism within the European Union, the author attempts theoretically to contextualise observed cross‐border dynamics as a problematic of ‘cosmopolitical governance’, defined by an ongoing deficit of socio‐political rights and duties constitutive of forms of citizenship applicable to the uniquely transnational environments of cross‐border milieux. By exploring Kantian categories of aesthetic judgement and the forms of political community implicit in their manifestation of reason, the author posits a conceptual model of cosmopolitical right which adheres neither to the morally charged rationalities sustaining the liberal, modernist nation state nor the Hobbesian rationalities characterising interstate relations, but is critically informed by the ethical demands required in achieving agreement around claims rooted in affect and the passions. As elaborated in a case study of tranfrontier labourers within the transborder (and tri‐lingual) Euregion Maas‐Rhein, this Kantian sensus communis is meant to lead to the acknowledgement of a spatial and cultural politics capable of empowering cross‐border regional actors in negotiating a measure of agency vis‐a‐vis nation state communitarian logics.  相似文献   
690.
During the Cold War, “buffer” or “bastion” seemed a popular metaphor to describe Turkey. After the Cold War, “bridge,” (and, to some extent, the “crossroad”) metaphor started to dominate the Turkish foreign policy D??course. This article traces the use of “bridge” metaphor in this D??course in the post-Cold War period by the Turkish foreign policy elite. It develops two arguments. First, the word bridge is a “metaphor of vision” combining Turkey's perceived geographical exceptionalism with an identity and a role at the international level. As a “metaphor of vision,” the employment of the word “bridge” highlighted Turkey's liminality and justified some of its foreign policy actions to Eurasia and then to the Middle East. Second, because the bridge metaphor was used in different context to justify different foreign policy choices, its meaning has changed, illustrating that metaphors are not static constructs. It concludes by Say?ng that the continuous use of “bridge” metaphor might reinforce Turkey's “liminality,” placing Turkey in a less classifiable category than the regular “othering” practices.  相似文献   
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