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111.
We studied interactions between tourists and free-ranging bottlenose dolphins in an artificial feeding program at Monkey Mia, Australia. We used logistic regression to identify factors that contributed to the incidence of “risky” (potentially injurious) interactions between tourists and dolphins. Rates of dolphin-to-tourist risky interactions were heightened with longer waiting times before dolphins were fed. We documented differences among provisioned dolphins in their proclivity to engage in risky interactions; however, it was more likely for risky interactions to be initiated by tourists. Our findings suggest several readily implemented management strategies to reduce incidence of risky interactions. Long-term monitoring of tourism based on artificial feeding is essential to identify and rectify detrimental effects of provisioning on dolphins, to ensure the safety and welfare of dolphins and tourists, and to promote sustainability of this potentially harmful tourist activity.  相似文献   
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113.
When measuring the causal impacts of policy interventions, evaluators often contrast samples with and without the intervention tracked longitudinally. This article considers what happens when the without-intervention portion of the sample begins to be treated with the intervention part way through the follow-up period. The authors focus on randomized control trials, whose sponsors increasingly guarantee all participants in the study the intervention—the control members with a lag—while noting that the problem and their proposed solution apply to non-experimental impact evaluations as well. Once the control group (or other counterfactual group) receives the intervention, the treatment-control comparison becomes a measure of the difference in impacts between interventions of different durations—longer in the treatment group than the control group—rather than a measure of the total impact of the longer duration compared to no intervention. To measure this total impact—which tends to matter more to policy than differential or short-term impacts—the authors propose to sum the available experimental impact estimates from consecutive time periods, thus combining an experimental measure of the impact of the short duration intervention with an incremental measure of the added impact of the longer duration. The statistical properties of this estimator are explored, as are the conditions under which it provides an unbiased estimate of the total long-term effects of treatment.  相似文献   
114.
The unprecedented increase in gasoline costs between August 2005 and July 2008 has become a major public issue in the US. Of the contentions and potential solutions surrounding higher gasoline costs, one receiving relatively little attention has been the role of public transit. This research examines that question by analyzing the relationship between gasoline prices and transit ridership from January 2002 to April 2008 in nine major US cities. Regression analysis is used to assess the degree to which variability in rail and bus transit ridership is attributable to gasoline costs and fluctuations in gasoline cost, controlling for service changes, seasonality, and inherent trending. The results indicate that a small but statistically significant amount of ridership fluctuation is due to changes in gasoline prices. The results are discussed in light of the policy and practical implications of higher gasoline prices for mass transit and the potential for long term changes in US travel behavior.  相似文献   
115.
There has been considerable interest in whether stock market volatility is predictable and the extent to which cross-market relationships exist. This article examines the transmission of conditional stock price return volatility across the U.S., Canadian, and Mexican markets. Using daily data over the period 6/2/92-10/28/99 we provide empirical evidence on the extent to which cross-market relationships exist in the pre- and post-NAFTA periods.  相似文献   
116.
Researchers have typically employed cognitive and affective measures to study the effectiveness of brand placements in video games. A psychophysiological approach to measuring effectiveness has been sorely lacking and is necessary to help both academics and practitioners further their understanding of how brand placements work. The current study measures individuals’ orienting responses in terms of increased skin conductance and decreased heart rate upon exposure to brands in video games. Results indicate that game players register background advertisements subconsciously even though they may not be able to explicitly recall them later. There were no differences between gamers and nongamers in the recall and recognition of brands from the video game. Furthermore, brands with preexisting favorable attitudes automatically received further processing, suggesting orienting response is an indicator of initial perception rather than further elaboration.  相似文献   
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118.
In this study, we comprehensively examine the relationships between ethical leadership, social exchange, and employee commitment. We find that organizational and supervisory ethical leadership are positively related to employee commitment to the organization and supervisor, respectively. We also find that different types of social exchange relationships mediate these relationships. Our results suggest that the application of a multifoci social exchange perspective to the context of ethical leadership is indeed useful: As hypothesized, within-foci effects (e.g., the relationship between organizational ethical leadership and commitment to the organization) are stronger than cross-foci effects (e.g., the relationship between supervisory ethical leadership and commitment to the organization). In addition, in contrast to the “trickle down” model of ethical leadership (Mayer et al. in Org Behav Hum Decis Process 108:1–13, 2009), our results suggest that organizational ethical leadership is both directly and indirectly related to employee outcomes.  相似文献   
119.
Over the past decade, a number of accounting and financial reporting frauds have led to lost stock wealth, destroyed public trust, and a worldwide recession that called for necessary reform. Regulatory responses and systemic reforms quickly followed, and we show that, while necessary, these reforms are insufficient. The purpose of this paper is to forward virtuous professionalism as a necessary path toward restoring financial reporting systems. We take the position of external observer and analyze the accounting profession over time to assess what has transpired within our financial reporting systems. Our analysis reveals that the combined influence of commercialism and regulatory response has led to a systemic decline in accounting’s professional ideals and, as a result, an erosion of public trust. We then propose virtuous professionalism as a necessary process for restoring financial reporting systems based on sociological, professional, and philosophical theories. We argue that virtuous professionalism is necessary for restoring the public servant identity of the accounting professional. We conclude that efforts to restore financial reporting systems should begin with reforms that restore professional identity shaped by virtues.  相似文献   
120.
It is often the case that members of selling centers are governed by different control systems (i.e., some selling center members are governed more by behavior controls while others are governed more by outcome controls). Surprisingly, there is little research which examines the impact of control system diversity (CSD) on selling center processes (e.g., decision comprehensiveness) and outcomes (e.g., performance). The present research integrates the literature on psychological stakes to show that CSD is positively related to decision comprehensiveness when psychological stakes are high but not when they are low. Decision comprehensiveness, in turn, is positively related to performance. This research uses data from multiple sources across 61 selling centers to provide novel insights into a new form of diversity and the under researched context of selling centers.  相似文献   
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