全文获取类型
收费全文 | 25951篇 |
免费 | 512篇 |
专业分类
财政金融 | 4054篇 |
工业经济 | 1198篇 |
计划管理 | 4228篇 |
经济学 | 6292篇 |
综合类 | 534篇 |
运输经济 | 144篇 |
旅游经济 | 139篇 |
贸易经济 | 6260篇 |
农业经济 | 380篇 |
经济概况 | 2611篇 |
信息产业经济 | 45篇 |
邮电经济 | 578篇 |
出版年
2023年 | 147篇 |
2022年 | 92篇 |
2021年 | 140篇 |
2020年 | 267篇 |
2019年 | 278篇 |
2018年 | 2770篇 |
2017年 | 2636篇 |
2016年 | 1709篇 |
2015年 | 392篇 |
2014年 | 520篇 |
2013年 | 1684篇 |
2012年 | 887篇 |
2011年 | 2293篇 |
2010年 | 2176篇 |
2009年 | 1848篇 |
2008年 | 1782篇 |
2007年 | 2090篇 |
2006年 | 306篇 |
2005年 | 562篇 |
2004年 | 651篇 |
2003年 | 753篇 |
2002年 | 388篇 |
2001年 | 166篇 |
2000年 | 155篇 |
1999年 | 78篇 |
1998年 | 105篇 |
1997年 | 50篇 |
1996年 | 90篇 |
1995年 | 59篇 |
1994年 | 64篇 |
1993年 | 63篇 |
1992年 | 66篇 |
1991年 | 61篇 |
1990年 | 61篇 |
1989年 | 42篇 |
1988年 | 34篇 |
1987年 | 44篇 |
1986年 | 54篇 |
1985年 | 76篇 |
1984年 | 72篇 |
1983年 | 46篇 |
1982年 | 57篇 |
1981年 | 54篇 |
1980年 | 43篇 |
1979年 | 45篇 |
1978年 | 50篇 |
1977年 | 45篇 |
1976年 | 46篇 |
1975年 | 32篇 |
1969年 | 28篇 |
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
51.
52.
This study furthers our understanding of how corruption affects the decision-making process of allocating foreign direct investment. Drawing on the responses of 28 managers in charge of establishing operations in a highly corrupt host country, we argue that those firms based in home countries with low levels of corruption are more proactive in preparing to face corruption abroad than those based in countries with high corruption levels. This means that firms from less corrupt home countries have strategies in place to deal with high corruption abroad. This finding is based on the fact that these firms have stronger pressures to not engage in corruption from their home stakeholders. Also, these firms might not have the experience of dealing with corruption at home, which hinders their potential to deal with corruption abroad. On the other hand, those firms based in highly corrupt home countries do not have clear strategies to deal with corruption abroad. This assertion is based on the fact that these firms might have familiarity in dealing with corruption and thus, might not see it as an obstacle to operating abroad. 相似文献
53.
Consider N independent stochastic processes \((X_i(t), t\in [0,T])\), \(i=1,\ldots , N\), defined by a stochastic differential equation with random effects where the drift term depends linearly on a random vector \(\Phi _i\) and the diffusion coefficient depends on another linear random effect \(\Psi _i\). For these effects, we consider a joint parametric distribution. We propose and study two approximate likelihoods for estimating the parameters of this joint distribution based on discrete observations of the processes on a fixed time interval. Consistent and \(\sqrt{N}\)-asymptotically Gaussian estimators are obtained when both the number of individuals and the number of observations per individual tend to infinity. The estimation methods are investigated on simulated data and show good performances. 相似文献
54.
The proposed method of Stochastic Non-smooth Envelopment of Data (StoNED) for measuring efficiency has to date mainly found application in the analysis of production systems which have exactly one output. Therefore, the objective of this paper is to examine the applicability of StoNED when a ray production function models a production technology with multi-dimensional input and output. In addition to a general analysis of properties required by a ray production function for StoNED to be applicable, we conduct a Monte Carlo simulation in order to evaluate the quality of the frontier and efficiencies estimated by StoNED. The results are compared with those derived via Stochastic Frontier Analysis (SFA) and Data Envelopment Analysis (DEA). We show that StoNED provides competitive estimates in regard to other methods and especially in regard to the real functional form and efficiency. 相似文献
55.
In this paper, a structural analysis of hybrid censoring models is presented. This new modularization approach to hybrid censoring models enables a convenient derivation of distributional results. For instance, it allows to derive the exact distribution of the MLEs under an exponential assumption for very complex hybrid scenarios. In order to illustrate the benefit of this idea, we apply it to four new unified progressive hybrid censoring schemes. They are extensions of already proposed unified Type-I/II/III/IV hybrid censoring schemes to progressively Type-II censored data. The resulting analysis shows that the modularization approach provides a powerful, efficient, and elegant tool to study even more complex hybrid censoring models. 相似文献
56.
Various aspects of sustainable development and quality of life are considered, including the impact of standardization. Particular attention is paid to the study of the role played by standardization in improving environmental protection. In this connection the significance of standardization is shown as a factor of improving the technological potential of an enterprise and the quality of life. Various approaches to methods for assessing the effective impact of standardization on the quality of life are analyzed. 相似文献
57.
58.
The implementation of smart meters in German households by 2032 is a major step in the transition towards an intelligent and connected energy system. Despite of federal legislation providing a structured plan for the nationwide smart meter rollout including basic product requirements, actors within the energy market have the opportunity to take an active part in shaping the market through appealing product offers and hence to create competitive advantage. This study identifies relevant features of smart meters from literature und business practice, and measures customer’s preferences for these features. Results indicate predominantly positive customer evaluations of smart meter features, amongst which the availability of consumption data, the installation price and rental charges as well as time variable tariffs contribute most to overall utility of smart meters. Finally, findings suggest targeting customers by defining strategies to address privacy concerns, to educate about saving potentials as well as to create differentiated pricing schemes. 相似文献
59.
Abusive supervision has received increasing attention in the field. However, few studies have qualitatively reviewed its latest developments. The current paper reviews 48 studies on abusive supervision using content analysis. We identify six emerging trends of abusive supervision, including inconsistency of abusive behaviors, comparison between perceived and objective behaviors, reciprocity, team-level climate, coworker effects, and comparisons between theoretical perspectives. Based on a review of those six trends and some emerging findings, we identify and validate the possible positive effects of abusive supervision from an integrated analysis. We also determine the moderating role that Asian culture plays in differentiating the negative and positive effects of abusive supervision. Specifically, we identify the differences between Asian and Western cultures, and then explore the moral mechanisms (i.e., violation of moral standards, conflict of moral principles) through which abusive supervision may exert positive effects in the Asian cultural context. Finally, we clarify our theoretical implications and provide suggestions for future research. 相似文献
60.
In this essay we consider why American colleges and universities participate in big-time commercialized intercollegiate sports, and how sports came to play such a prominent role on American college and university campuses. We also review how the National Collegiate Athletic Association (NCAA) developed as a body to regulate player safety and transformed itself into an economic regulator, the means by which the NCAA attempts to maintain its control, increase revenues, and reduce costs for college sports programs. We also examine how the organization succeeds in the face of institutional characteristics that imply that its cartel activities would be doomed. Finally, we speculate on what changes might be on the horizon for the NCAA and college athletics. 相似文献