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   997篇
  免费   42篇
财政金融   180篇
工业经济   110篇
计划管理   170篇
经济学   153篇
综合类   48篇
运输经济   13篇
旅游经济   34篇
贸易经济   223篇
农业经济   43篇
经济概况   65篇
  2023年   12篇
  2022年   6篇
  2021年   10篇
  2020年   12篇
  2019年   24篇
  2018年   33篇
  2017年   28篇
  2016年   22篇
  2015年   28篇
  2014年   27篇
  2013年   144篇
  2012年   41篇
  2011年   26篇
  2010年   38篇
  2009年   38篇
  2008年   40篇
  2007年   32篇
  2006年   43篇
  2005年   32篇
  2004年   32篇
  2003年   36篇
  2002年   38篇
  2001年   27篇
  2000年   19篇
  1999年   25篇
  1998年   20篇
  1997年   14篇
  1996年   16篇
  1995年   12篇
  1994年   10篇
  1993年   9篇
  1992年   14篇
  1991年   7篇
  1990年   11篇
  1989年   5篇
  1988年   7篇
  1986年   5篇
  1985年   15篇
  1984年   11篇
  1983年   9篇
  1982年   11篇
  1981年   5篇
  1980年   4篇
  1979年   8篇
  1978年   5篇
  1976年   4篇
  1975年   4篇
  1974年   4篇
  1971年   3篇
  1968年   2篇
排序方式: 共有1039条查询结果,搜索用时 15 毫秒
21.
22.
Aims: To better understand the impact of the clinical course of multiple sclerosis (MS) and disability on employment, absenteeism, and related factors.

Materials and methods: This study included respondents to the North American Research Committee on Multiple Sclerosis Registry spring 2015 update survey who were US or Canadian residents, aged 18–65 years and reported having relapsing-remitting MS (RRMS), secondary progressive MS (SPMS), or primary progressive MS (PPMS). The RRMS and SPMS participants were combined to form the relapsing-onset MS (RMS) group and compared with the PPMS group regarding employment status, absenteeism, and disability. Multivariable logistic regression was used to examine the relationship between employment-related outcomes and factors that may affect these relationships.

Results: Of the 8004 survey respondents, 5887 (73.6%) were 18–65 years of age. The PPMS group (n?=?344) had a higher proportion of males and older mean age at the time of the survey and at time of diagnosis than the RMS group (n?=?4829). Female sex, age, age at diagnosis, cognitive and hand function impairment, fatigue, higher disability levels, ≥3 comorbidities, and a diagnosis of PPMS were associated with not working. After adjustment for disability, the employed PPMS sub-group reported similar levels of absenteeism to the employed RMS sub-group.

Limitations: Limitations of the study include self-report of information and the possibility that participants may not fully represent the working-age MS population.

Conclusions: In MS, employment status and absenteeism are negatively affected by disability, cognitive impairment, and fatigue. These findings underscore the need for therapies that prevent disability progression and other symptoms that negatively affect productivity in persons with MS to enable them to persist in the workforce.  相似文献   
23.
Using a sample of European real estate firms over the 2007–2010 period, this study provides some evidence that measurement-related fair value disclosures reduce information asymmetry. We find a negative association between the extent of fair value disclosures and the bid-ask spread, but no association with two additional measures of information asymmetry (zero returns and price impact). Contrary to our expectation, we fail to find evidence that firms using model estimates exclusively benefit the most from such additional disclosure. Analysing measurement errors (the absolute difference between the selling price of an asset and its fair value prior to sale), we find that firms that use model estimates exclusively and provide more measurement-related disclosures have lower errors and more accurate fair value estimates. In other words, if our lack of results is due to investors not using this additional disclosure this is to their detriment.  相似文献   
24.
本文批判了以公司品牌、商品名称或个人姓名冠名于公共设施领域(physical public domain)的现象。文章指出,政府机构推行的冠名权政策及实践、商标法与公开权法理三者之间存在着未被意识到的公共政策的冲突。文章认为,冠名行为往往使公共资产遭到不民主、不公平、不合法、不适当的私用,并构成一种受迫性言论(compelled speech)。文章认为可以采用替代机制来选定公共设施的冠名。  相似文献   
25.
The study of welfare participation in the United States prior to the 1996 Welfare Reform Act and afterward has primarily focused on comparing native and immigrant households. Analyses that have gone beyond this broad classification have focused on comparisons across race, with particular focus on Hispanic immigrants. This paper moves away from the existing literature by investigating whether there is a difference in welfare usage among immigrant based on their birthplace. Using a probit model, we investigate this potential difference by testing two related hypotheses. Our results suggest that the probability of welfare usage for immigrants with similar characteristic, differ for some immigrant groups. We also find that for some immigrant groups, citizen and noncitizens differ with respect to welfare usage.  相似文献   
26.
A Model of the Determinants of International Trade in Higher Education   总被引:1,自引:0,他引:1  
This article focuses on a neglected aspect of international trade in services i.e. trade in Higher Education. The purpose of the research endeavour is to draw together the determinants of this trade using its most visible aspect - foreign students. There are many categories of foreign student, but the study is confined to those students who opt to complete higher educational outside the home country. There is much competition among host nations for international students and the factors influencing demand for and supply of university places for foreign students are considered, using medical education as a case study. Little if any attention has been given to theory generation in this field and this study was undertaken to redres the balance. The model presented here clearly illustrartes the many variables which impact on a student's decision to stydy overseas, and their choice qf destination, the most critial one being information.  相似文献   
27.
Using a proprietary data set consisting of all private firm audit engagements in 2000 from one Big 4 firm in Belgium, we investigate (i) whether audit office industry scale is associated with a reduction of total, partner, and staff audit hours and thus with efficiency gains triggered by organizational learning from servicing more clients in an industry and (ii) whether the extent of efficiency pass‐on from the auditor to its clients depends on the audit firm's market power. We find that auditor office industry scale is associated with efficiency gains and a reduction of the variable costs (i.e., fewer total audit hours, partner hours, and staff hours), ceteris paribus. Our results also suggest that, on average, realized efficiencies are entirely passed on, as evidenced by a nonsignificant effect of auditor industry scale on the auditor's billing rate. Furthermore, we find that the extent of the efficiency pass‐on decreases with the market power of the audit firm in the industry market segment as we document a higher billing rate for auditors with high market power (versus low market power). In addition, we find that the lower audit hours associated with auditor industry scale do not compromise audit quality.  相似文献   
28.
  • The museum sector has undergone considerable change in the last few decades, which has been a result of both internal and external forces. The topic of pricing in museums, however, has attracted little interest from researchers in the field despite the sector's need to understand it better. This study aimed to address this gap in knowledge. Results of a comprehensive literature review on pricing highlight that the topic of pricing in museums is problematic, as a range of issues, social, political and often value-laden, must be considered before pricing decisions can be made. The study highlights that there is diversity in the sector with regard to pricing, but that museums generally adopt a unilateral approach to pricing. Researchers in entrepreneurial marketing have noted that conventional pricing theory is being turned on its head and they argue that deciding what prices to charge represents one of the more entrepreneurial strategies for organisations. This study indicates that, within the context of museums, marketers are failing to recognise and capitalise on such pricing opportunities. Approaches to setting multiple museum pricing strategies, depending on the market context, are proposed in this paper. In this way, knowledge of museum pricing can optimise the organisational outcomes of museums while continuing to meet their social responsibilities.
Copyright © 2007 John Wiley & Sons, Ltd.  相似文献   
29.
Increasingly through the 1990s, tobacco control advocates questioned the practice of public institutions investing in tobacco company stocks. The questioning was framed in at least three ways. First, is it ethical to fund public expenditures with profits from a product that causes addiction and disease? Second, is it sound social policy to derive public income from a product that increases healthcare costs and reduces worker productivity? Finally, is it sound fiscal policy to invest in an historically profitable industry facing multiplying legal and regulatory challenges? While the tobacco industry preferred to restrict discussion to the fiscal question, and offered an affirmative answer, its position was weakened by depressed stock prices brought on by actions of the industry as much as by tobacco control activism. As part of a campaign to restore its credibility as an investment vehicle with public fund managers, Philip Morris (PM) commissioned a report from the influential investment managers/advisors Wilshire Associates. However, Wilshire had only recently conducted such a study for the Washington State Investment Board (WSIB), assuring the board that the value tobacco stocks added to an investment portfolio – if any – was too small to be measured. Nonetheless, within a year, Wilshire produced a report for PM which appeared to laud the investment value of tobacco and to dismiss tobacco-excluded investment alternatives. This paper examines how Wilshire produced apparently diametrically opposed reports for clients with different interests. It reveals a pattern of potential conflicts of interest among tobacco companies, financial analysis firms, investment authorities, and institutional fund managers. It demonstrates substantial violations of two generally accepted ethical principles of business consulting: veracity and transparency.  相似文献   
30.
As the US population ages, more older adults will face transportation and mobility challenges. This study examines the characteristics and contributing circumstances of nonfatal older adult pedestrian injuries. Data were obtained from the National Electronic Injury Surveillance System-All Injury Programme (NEISS-AIP) for the years 2001 through 2006. Cases included persons aged 65 years and older who were nonfatally injured on a public roadway. The results indicated that on average, an estimated 52,482 older adults were treated in emergency departments each year for nonfatal pedestrian injuries. Falling and being hit by a motor vehicle were the leading mechanisms of injury, resulting in 77.5% and 15.0% of older adult pedestrian injuries, respectively. More than 9000 older pedestrian fall-related injuries each year involved a kerb. It is concluded that the growth in the older adult population could add to the overall burden of these nonfatal pedestrian injuries. Making transportation and mobility improvements, including environmental modifications, is important for preventing these injuries.  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