首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   8652篇
  免费   296篇
财政金融   1693篇
工业经济   724篇
计划管理   1491篇
经济学   1880篇
综合类   104篇
运输经济   82篇
旅游经济   180篇
贸易经济   1727篇
农业经济   327篇
经济概况   689篇
信息产业经济   1篇
邮电经济   50篇
  2023年   59篇
  2022年   34篇
  2021年   72篇
  2020年   135篇
  2019年   197篇
  2018年   207篇
  2017年   242篇
  2016年   259篇
  2015年   191篇
  2014年   241篇
  2013年   991篇
  2012年   335篇
  2011年   343篇
  2010年   310篇
  2009年   362篇
  2008年   328篇
  2007年   298篇
  2006年   260篇
  2005年   219篇
  2004年   241篇
  2003年   255篇
  2002年   214篇
  2001年   195篇
  2000年   189篇
  1999年   176篇
  1998年   182篇
  1997年   162篇
  1996年   154篇
  1995年   149篇
  1994年   129篇
  1993年   105篇
  1992年   115篇
  1991年   110篇
  1990年   112篇
  1989年   99篇
  1988年   81篇
  1987年   76篇
  1986年   90篇
  1985年   125篇
  1984年   107篇
  1983年   84篇
  1982年   129篇
  1981年   75篇
  1980年   77篇
  1979年   65篇
  1978年   60篇
  1977年   54篇
  1976年   50篇
  1975年   39篇
  1974年   30篇
排序方式: 共有8948条查询结果,搜索用时 15 毫秒
101.
102.
Condition-based depreciation (CBD) is a method of accounting for the combined maintenance and renewal effort required to ensure infrastructure asset networks retain their service potential. CBD methods entail the calculation of an annuity based on detailed asset management plans, which forecast works programs over the foreseeable lifecycle of the network and link them to service need projections. CBD has not gained wide acceptance by the accounting profession, because of concerns about the methos underlying assumptions and potential problems with its application. These concerns are analysed from the perspective of the engineering profession (which is frequently the custodian of such assets), and the feasibility of the method demonstrated in a number of case studies.  相似文献   
103.
Statistical Decision Problems and Bayesian Nonparametric Methods   总被引:1,自引:0,他引:1  
This paper considers parametric statistical decision problems conducted within a Bayesian nonparametric context. Our work was motivated by the realisation that typical parametric model selection procedures are essentially incoherent. We argue that one solution to this problem is to use a flexible enough model in the first place, a model that will not be checked no matter what data arrive. Ideally, one would use a nonparametric model to describe all the uncertainty about the density function generating the data. However, parametric models are the preferred choice for many statisticians, despite the incoherence involved in model checking, incoherence that is quite often ignored for pragmatic reasons. In this paper we show how coherent parametric inference can be carried out via decision theory and Bayesian nonparametrics. None of the ingredients discussed here are new, but our main point only becomes evident when one sees all priors—even parametric ones—as measures on sets of densities as opposed to measures on finite-dimensional parameter spaces.  相似文献   
104.
The fastest growing segment of the hospitality industry is gaming-related business. This industry has experienced record numbers of companies going public, and their stocks are considered favorable long-term investments. Research in the initial public offering (IPO) area suggests that investors acquiring stock at the initial offering price earn large returns. The purpose of this study was to determine if large returns are being experienced for IPOs in the gaming segment of the hospitality industry, and if these large returns were limited to investors who purchased the stock at the initial offer price. There were 14 gaming-related companies selected for the study. The conclusions supported research reporting that the highest returns from IPO investments are made when the stock is purchased at the initial offer price. This study concludes that returns based on the initial offer price were greater than the casino index and the IPO index. When the investor purchased the stock at the first day's closing price, however, returns compared to the two indices were surpassed only after holding the stock for 8 weeks.  相似文献   
105.
106.
Previous studies on strategic groups have mainly focused on their static characteristics in order to test the theory of strategic groups and intraindustry performance differences (Porter, 1979; Cool and Schendel, 1988; Fiegenbaum and Thomas, 1990). In contrast, this study takes a longitudinal, dynamic perspective and describes the forces driving strategic group membership and structural evolution. It proposes that a strategic group acts as a reference point for group members in formulating competitive strategy. A partial adjustment model of strategic mobility is then developed which incorporates the idea of a strategic group as a reference group. It models strategic change in an industry both within and across strategic groups. The model is tested in the context of an in-depth industry analysis of the more significant firms in the insurance industry over the 1970-84 time period. The results suggest that strategic groups act as reference points for firm strategies and that predictions of future firm strategies and industry/group structures may also be successfully derived.  相似文献   
107.
The deregulatory trend and advances in technology during the 1980s removed many restrictions on the ability of U.S. depository financial institutions to obtain and redistribute funds across diverse geographical markets. This pervasive deregulation and innovation should have increased the degree of integration between different geographical financial markets. Yet there is little empirical evidence available on the validity of this expectation. It is important to provide such evidence since much of the U.S. depository institution regulatory policy is predicated on the assumption of highly localized, segmented financial markets. Considering alternative breakpoints at 1980 (DIDMCA) and at 1982 (Garn-St Germain), the current study tests the hypothesis that the degree of geographical financial integration after this period exceeded that prior to this period. Mortgage markets are focused on due to their historical importance in the regulation of funds flows. The study finds a significant increase in the mean contemporaneous correlation among FHLB districts' mortagage rate residuals in a vector-autoregressive system between two test periods. Further analysis shows that the distance between FHLB districts' headquarters and their respective pairwise interdistrict correlation coefficients are negatively related in the prior period but not significantly related in the later period. Economic booms and busts alternated among the districts over the two sample periods in a manner consistent with the reallocation of capital among more integrated financial markets. Individual districts' mortgage rates have been more sensitive to variations in national credit market conditions since deregulation was legally recognized by DIDMCA in 1980. Thus, the collective empirical evidence found in this study indicates that mortgage markets have responded to deregulation and marked technological advances by moving toward a national, highly integrated market. Regulators' preoccupation with highly localized, segmented markets must consequently be reexamined.  相似文献   
108.
109.
110.
We investigated U.S. and Canadian reactions to workplace drug and alcohol testing programs. Canadian truck drivers (n = 183) deemed drug and alcohol testing policies less fair, and were less accepting of these policies, than their American counterparts (n = 153). We also compared the perspectives of recipients versus third-party observers with regard to their reactions to a drug testing program. Unlike the pattern observed among American observers, the responses by Canadian observers were highly similar to those of the recipients. Canadian observers were more inclined to file a formal protest regarding the implementation of a drug and alcohol testing program than were U.S. observers. The results also showed that procedural and interactional justice principles contributed to the program's fairness, acceptance, and lower levels of protest intentions in both Canada and the United States. We propose that scholars and practitioners can gain a better understanding of multinational reactions to drug and alcohol testing by considering not only cultural but also historical, social, political, and other environmental factors that can shape reactions to personnel practices.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号