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   810篇
  免费   21篇
财政金融   143篇
工业经济   78篇
计划管理   173篇
经济学   123篇
综合类   14篇
运输经济   5篇
旅游经济   21篇
贸易经济   162篇
农业经济   55篇
经济概况   55篇
邮电经济   2篇
  2021年   8篇
  2020年   6篇
  2019年   12篇
  2018年   12篇
  2017年   14篇
  2016年   17篇
  2015年   12篇
  2014年   16篇
  2013年   94篇
  2012年   20篇
  2011年   31篇
  2010年   16篇
  2009年   21篇
  2008年   26篇
  2007年   29篇
  2006年   15篇
  2005年   22篇
  2004年   18篇
  2003年   31篇
  2002年   16篇
  2001年   22篇
  2000年   13篇
  1999年   13篇
  1998年   14篇
  1997年   18篇
  1996年   12篇
  1995年   12篇
  1994年   12篇
  1993年   13篇
  1992年   10篇
  1991年   16篇
  1990年   7篇
  1989年   7篇
  1988年   7篇
  1987年   9篇
  1985年   6篇
  1984年   27篇
  1983年   12篇
  1982年   13篇
  1981年   12篇
  1980年   21篇
  1979年   19篇
  1978年   11篇
  1977年   12篇
  1976年   12篇
  1975年   7篇
  1974年   13篇
  1973年   8篇
  1972年   6篇
  1971年   9篇
排序方式: 共有831条查询结果,搜索用时 0 毫秒
151.
This paper investigates the antecedents and consequences of two product advantage components: product meaningfulness and product superiority. Product meaningfulness concerns the benefits that users receive from buying and using a new product, whereas product superiority concerns the extent to which a new product outperforms competing products. The present paper argues that scholars and managers should make a deliberate distinction between the two components because they are theoretically distinct and also have different antecedents and consequences. Data were collected through an online survey on 141 new products from high‐tech companies located in The Netherlands. The results reveal that new products need to be meaningful as well as superior to competing products to be successful. This finding is consistent with the prevailing aggregate view on product advantage in the literature. However, the results also show that the effects of the two components on new product performance are moderated by market turbulence. Although each component is important in that it forms a necessary precondition for the other to affect new product performance under circumstances of moderate market turbulence, meaningfulness is most important for new product performance in turbulent markets where preferences have not yet taken shape. In contrast, when markets become more stable, the uniqueness of meaningful attributes decreases, and new products that provide advantage by fulfilling their functions in a way that is superior to competing products are more likely to perform well. In addition, the study shows that the firm's customer and competitor knowledge processes independently lead to product meaningfulness and superiority, respectively. The findings also reveal that under conditions of high technological turbulence the customer and competitor knowledge processes complement each other in creating product meaningfulness and superiority. This implies that the level of technological turbulence puts requirements on the breadth of firms' market knowledge processes to create a new product with sufficient advantage to become successful. The paper concludes that neglecting the distinction between product meaningfulness and superiority when assessing a new product's advantage may lead to an incomplete insight on how firms can improve the performance of their new products.  相似文献   
152.
Abstract

In this paper we consider the Sparre Andersen insurance risk model. Three cases are discussed: the ordinary renewal risk process, stationary renewal risk process, and s-delayed renewal risk process. In the first part of the paper we study the joint distribution of surplus immediately before and at ruin under the renewal insurance risk model. By constructing an exponential martingale, we obtain Lundberg-type upper bounds for the joint distribution. Consequently we obtain bounds for the distribution of the deficit at ruin and ruin probability. In the second part of the paper, we consider the special case of phase-type claims and rederive the closed-form expression for the distribution of the severity of ruin, obtained by Drekic et al. (2003, 2004). Finally, we present some numerical results to illustrate the tightness of the bounds obtained in this paper.  相似文献   
153.
Abstract

Four pension plan conversions are examined to determine the impact on retirement benefits of workers. The study was based on interviews with top management, employee surveys, and actuarial analysis of retirement benefits under the old and new pension plans. In general, workers who leave the firm prior to the age of early retirement can expect increased benefits under the new defined contribution and cash balance plans, whereas older, more senior workers can expect to accrue smaller benefits after the plan conversions. Recognizing these potential adverse effects, the employers in our studies provided various types of transition benefits to existing workers or gave employees the choice of remaining in the old defined benefit plan. Employee surveys reveal that younger workers are more supportive of the new pension plans than are older workers. These case studies also indicate that communication by managements with their employees is very important to the successful implementation of plan conversions.  相似文献   
154.
In the role of financial analyst for a venture capital firm, you are assigned the responsibility of evaluating two online retailers who have applied for financing to build a distribution center in western Canada. Based on your developing knowledge of Canadian accounting standards for private enterprises (ASPE), you evaluate the financial reporting policies and financial results of the two companies to identify the company that is best suited for your firm's support. Through this case, you will refine your understanding of ASPE and you will exercise your reasoning and analytical skills.  相似文献   
155.
Fred Luks 《Futures》1999,31(7):334
Post-normal science is an attempt to increase the problem-solving capacity of scientific work in a context of ‘soft' scientific inputs and ‘hard' policy decisions. The discourse on rhetoric in science can contribute to a better understanding of the problems and potentials of such an effort. The inclusion of ‘extended peer communities' is a case in point of the usefulness of rhetoric for an enterprise that wants to go beyond the normal science of puzzle-solving. The critical potential of rhetoric should be utilized. The distinction between internal and external rhetoric highlights the problematic relationship between scientific and political work, for example in the field of environmental issues.  相似文献   
156.
157.
We characterize rationality of certain choice functions C by C(A) ∩ C(B) ? C(AB) ? C(A) ∪ C(B). We also characterize choice functions coming from preference relations which are partial orders and some other types of relations. Furthermore, we also characterize the admissible set of a binary relation by the fact it is invariant under certain changes in the relation.  相似文献   
158.
159.
160.
New rules issued by the U.S. Department of Agriculture requiring provision of nutrition information on raw meat and poultry products may encourage consumers to make healthier food choices. Reduced intake of fat and cholesterol may prevent future cases of stroke, heart disease, and cancer. The benefits of these rules are estimated to be $62 to $125 million annually.  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