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   1621篇
  免费   75篇
财政金融   388篇
工业经济   113篇
计划管理   228篇
经济学   331篇
综合类   19篇
运输经济   23篇
旅游经济   55篇
贸易经济   300篇
农业经济   105篇
经济概况   134篇
  2023年   14篇
  2022年   9篇
  2021年   18篇
  2020年   32篇
  2019年   44篇
  2018年   56篇
  2017年   58篇
  2016年   61篇
  2015年   36篇
  2014年   55篇
  2013年   217篇
  2012年   64篇
  2011年   60篇
  2010年   89篇
  2009年   64篇
  2008年   70篇
  2007年   56篇
  2006年   44篇
  2005年   45篇
  2004年   48篇
  2003年   46篇
  2002年   47篇
  2001年   35篇
  2000年   44篇
  1999年   28篇
  1998年   30篇
  1997年   22篇
  1996年   23篇
  1995年   26篇
  1994年   27篇
  1993年   14篇
  1992年   15篇
  1991年   15篇
  1990年   21篇
  1989年   9篇
  1988年   12篇
  1986年   9篇
  1985年   11篇
  1984年   10篇
  1983年   14篇
  1982年   16篇
  1981年   10篇
  1980年   14篇
  1979年   7篇
  1978年   9篇
  1977年   5篇
  1976年   9篇
  1974年   6篇
  1973年   5篇
  1971年   5篇
排序方式: 共有1696条查询结果,搜索用时 31 毫秒
1.

This paper examines the extent of social interactions in an individual’s decision to undergo mammography. Using Behavioral Risk Factors Surveillance System surveys from 1993 to 2016, the effect of other female screening behavior on an individual’s decision to have a routine breast cancer screening was measured by calculating the size of a so called “social multiplier” in mammography. A vector of social multipliers was estimated in the use of mammograms in the past 1–2 years by taking the ratio of group-level effects of exogenous explanatory variables to individual-level effects of the same variables. Peer groups were defined as same-aged women living in the same state. Three age groups of women were considered: 40–49, 50–74, and 75 and older. Several econometric approaches were used to analyze the effect of social interactions on mammography use, including ordinary least squares, fixed effects, and split-sample instrumental variable. For all women, evidence was found of social interactions associated with individual’s education, employment, and poor health. In addition, number of age-group-specific social multipliers was found. The strongest evidence of spillover in mammography was found for women ages 75 and older. Policy makers should be aware that, in the presence of a social multiplier, the value of any type of screening intervention is higher than the one that would be measured at the individual-level.

  相似文献   
2.
Wong  Kevin Tze-wai  Zheng  Victor  Wan  Po-san 《Quality and Quantity》2022,56(4):2387-2414
Quality & Quantity - In recent years, rapid increases in mobile phone ownership and decreases in landline users have led to potential biases in landline phone survey estimations. Mobile-only...  相似文献   
3.
4.
This article offers a critical assessment of the “survivor bonds” (SBs) proposal recently put forward by Blake and Burrows, which calls for the government to issue bonds whose coupon payments are contingent on the proportions of retirees surviving to particular ages. It suggests that the proposal has considerable merit and discusses the circumstances in which SBs would be useful risk management tools for insurance companies. It also discusses alternatives such as reinsurance, hedging with life contracts, dynamic hedging, and other forms of survivor derivative. Finally, it evaluates and rejects the argument that SBs should be issued by the state.  相似文献   
5.
This paper examines the potential impact of the 1986 U.K. Insolvency and Company Directors' Disqualification Acts on small firm financing decisions. With the aid of a simplified Black and Scholes (1973) option model of financing decisions, the paper illustrates how the 1986 legislation reduces the incentives for owner-managers to gamble with creditor claims, particularly in situations of financial distress, by making them personally liable for unmet claims and/or by disqualifying them from holding office for a fixed period. For instance, example 3 in the paper shows the conflict that could result from the owner-manager reducing his/her opening equity position and it further argues how the legislation should act to alleviate the situation. It remains, however, an empirical question as to whether this reduction in creditors' exposure to the risk of uncompensated wealth transfers will ultimately result in a significantly greater number of company liquidations and disqualifications, particularly during a prolonged economic downturn, or an improved/less costly supply of finance to small firms.  相似文献   
6.
Voss  Kevin E.  Gammoh  Bashar S. 《Marketing Letters》2004,15(2-3):147-159
Several papers have been published demonstrating the positive effects a single, reputable ally has on evaluations of a focal brand. Interestingly, little research has been published examining the effects of multiple brand allies. We examine the effect of an alliance with two, one, or zero well-known brand allies on evaluations of a previously unknown focal brand. The presence of a single brand ally significantly increased perceived quality and hedonic and utilitarian attitudes. While multiple alliances improved focal brand evaluations relative to the no ally condition, the second ally did not increase evaluations relative to the single ally condition.  相似文献   
7.
Reviews     
'New technology a health and safety report'

APEX, London and Home Counties Area Sub-Committee; New Technology; a Health and Safety Report, February 1985. (Available from APEX, 3 Parkview Road, Welling, Kent, 0A16 1SZ, tel. 01-303 3407/8.)  相似文献   
8.
This paper presents an empirical investigation of the productivity effects of UK management buyouts (MBOs) over the period 1986–1997. It is the first study to use an augmented production function approach in order to determine and quantify: the Hicks–neutral productivity, the marginal productivity of labour, and the marginal productivity of capital effects of MBOs. The main findings are consistent with MBOs providing incentive and control systems that lead to improved firm–level productivity in the post–buyout organisation via reduced agency costs, debt bonding, and monitoring by buyout specialists.  相似文献   
9.
This article uses a survey of insurance agents in Florida to examine the manner in which insurance agents use and view the Internet as a method of marketing insurance products. The results of the survey suggest that the agents’ use of the Web and their attitudes toward the Web do not vary by demographic characteristics (including age, education level, gender, and income). In addition, the agents’ perception of the Internet as a threat (rather than an opportunity) does not vary by age or education level and is not correlated with their attitudes toward the use of the Web. However, while Internet marketing and other means of direct selling are viewed by the agents as equal threats to their sales, the agents believe that such marketing by other companies is a greater threat than that done by the companies they represent.  相似文献   
10.
Hypertext discussions are occurring more frequently at expert systems conferences. Hypertext is not an expert system language or expert system shell, but instead it is simultaneously a method of storing and retrieving data. The growing interest in hypertext in the expert system domain is because the combination of hypertext capabilities and expert systems creates a compelling synergistic relationship (Oren, 1987). During a panel discussion at the Second International Symposium on Expert Systems in Business, Finance and Accounting, Bill Swartout compared traditional expert systems to hypertext by saying that the knowledge base (e.g. the production rules) of an expert system can be thought of as formal knowledge and hypertext can be thought of as informal knowledge. This article will demonstrate how this informal knowledge can add power to traditional expert systems by increasing the flexibility of the explanation facilities and thereby the appeal of the system to a broader range of users. The article also will discuss how expert systems can improve the functionality of hypertext systems by adding intelligence to traditional hypertext systems. This article is divided into three sections. The first describes basic hypertext concepts. The second section shows how hypertext can enhance expert systems and, conversely, how expert systems can enhance hypertext systems. The final section discusses some potential problems and concerns that must be considered when designing a hypertext system.  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