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   367篇
  免费   13篇
财政金融   69篇
工业经济   34篇
计划管理   61篇
经济学   84篇
综合类   6篇
运输经济   6篇
旅游经济   9篇
贸易经济   76篇
农业经济   16篇
经济概况   17篇
邮电经济   2篇
  2023年   3篇
  2021年   5篇
  2020年   7篇
  2019年   11篇
  2018年   11篇
  2017年   9篇
  2016年   9篇
  2015年   7篇
  2014年   7篇
  2013年   51篇
  2012年   17篇
  2011年   19篇
  2010年   26篇
  2009年   14篇
  2008年   22篇
  2007年   14篇
  2006年   14篇
  2005年   10篇
  2004年   10篇
  2003年   17篇
  2002年   12篇
  2001年   4篇
  2000年   6篇
  1999年   8篇
  1998年   3篇
  1997年   2篇
  1996年   13篇
  1995年   5篇
  1994年   2篇
  1993年   6篇
  1992年   4篇
  1991年   7篇
  1990年   2篇
  1989年   3篇
  1988年   1篇
  1987年   1篇
  1985年   4篇
  1984年   1篇
  1983年   2篇
  1982年   1篇
  1980年   1篇
  1979年   2篇
  1978年   1篇
  1977年   1篇
  1976年   1篇
  1975年   2篇
  1974年   1篇
  1939年   1篇
排序方式: 共有380条查询结果,搜索用时 625 毫秒
51.
  • The transformation of fundraising from an ‘emerging profession’ to a ‘true profession’ is contingent on the continual development of a formal body of knowledge based on theory and research. To further that goal, this paper, written from a Canadian perspective, reviews current and recent research studies in both Canada and the USA, focusing specifically on the areas of legacy marketing and bequest gifts.
  • The aim of this paper is two-fold: first, to bring forward ‘established knowledge’ in this relatively new and burgeoning area of fundraising; and second, to draw attention to areas where there is a knowledge gap, thereby laying the groundwork for further research and progress in this area.
Copyright © 2005 John Wiley & Sons, Ltd.  相似文献   
52.
53.
Rimar JM  Diers D 《Nursing economic$》2006,24(6):298-307, 279
Nursing unit volume-outcome relationships exist for patients assigned selected DRGs. This finding suggests that, in some cases, aggregating inpatients with similar clinical conditions may result in lower cost of care, shorter length of stay, and fewer hospital deaths.  相似文献   
54.
A widely held view in the accountancy profession and the donor community is that accounting and the accountancy profession play an essential role in economic development. However, our review of the academic literature finds limited empirical research evidence on the relation between accounting and the accountancy profession and economic development, including specifically whether any such relation is causal, and if so, the direction of the causality. Entities, including those comprising the donor community, policymakers, and professional accountancy organizations (PAOs), need evidence on the question of whether and how the accountancy profession contributes to economic development. Such research could assist donors in evaluating the outcomes of interventions aimed at building the capacity of PAOs in emerging and developing economies and inform future interventions. We summarize the limited academic research addressing the relation between PAOs and economic development and present insights from two roundtables facilitated by the International Association for Accounting Education and Research. We identify research opportunities and research design considerations. We hope our paper will stimulate accounting researchers to advance this literature.  相似文献   
55.
Anomalies in the Foundations of Ridge Regression   总被引:1,自引:0,他引:1  
Errors persist in ridge regression, its foundations, and its usage, as set forth in Hoerl & Kennard (1970) and elsewhere. Ridge estimators need not be minimizing, nor a prospective ridge parameter be admissible. Conventional estimators are not LaGrange's solutions constrained to fixed lengths, as claimed, since such solutions are singular. Of a massive literature on estimation, prediction, cross–validation, choice of ridge parameter, and related issues, little emanates from constrained optimization to include inequality constraints. The problem traces to a misapplication of LaGrange's Principle, unrecognized singularities, and misplaced links between constraints and ridge parameters. Alternative principles, based on condition numbers, are seen to validate both conventional ridge and surrogate ridge regression to be defined. Numerical studies illustrate that ridge regression as practiced often exhibits pathologies it is intended to redress.  相似文献   
56.
Joint production of knowledge (JPK) is said to facilitate proactive mitigation of risks in marine resource management. However, lack of consensus on who should be involved, when it is happening and the exact mechanisms of sharing knowledge has precluded the development of an effective implementation framework. Here, we explore one approach to building a post-normal science, one that both includes local ecological knowledge and bridges scientific silos. We first identify several actions of knowledge production and then provide an Atlantic Canadian case study, drawn from an assessment of the impact of aquaculture on American lobster, to illustrate necessary actions on the road to JPK. Key actions include theorizing relationships, agreeing on key concepts, specifying, and interpreting required data, identifying principles and making evaluations. We fill a lacuna in the JPK literature by: first, defining knowledge as the result of a set of actions; second, using knowledge generating actions to explore how different knowledge sets come together to contribute to JPK; and third, identifying how knowledge actions can facilitate or inhibit JPK. We conclude that this list of the essential actions of knowledge production is necessary to the successful development of alternative approaches to risk.  相似文献   
57.
Over the last few decades, the gender composition of funeral directors in the United States has changed dramatically as women have entered this traditionally male‐dominated occupation. To practise as funeral directors, women (and men) must be licensed in all but one state. The most extensive training requirements exist in the 27 states with ‘ready‐to‐embalm’ laws, which require funeral directors to be embalmers. Using a sample of 45,989 licensing records from 40 states, we find that 18.1 per cent of funeral directors were women in 2006. However, the proportion is significantly lower in states with ready‐to‐embalm laws. Our regressions imply that these laws reduce the proportion of female funeral directors by 24 per cent. More generally, we find that the number of funeral directors per capita is 17 per cent lower, on average, in states with ready‐to‐embalm laws.  相似文献   
58.
We investigate whether issuers that choose to forgo a bond rating suffer an interest cost penalty greater than the cost of the rating. We use estimated ratings provided by Moody’s Investor Service to proxy for what the rating would have been if it had been purchased. We find that the primary factors associated with an issuer’s decision to purchase a rating are the rating expected by the issuer and the extent to which an issue is marketed locally. After controlling for self-selection bias, we find that the issuers that forgo a rating do not suffer an interest cost penalty.
Donna DudneyEmail:
  相似文献   
59.
The knowledge‐based view of the firm is a recent approach to understanding the relationship between firm capabilities and firm performance. Specifically, this approach suggests that knowledge generation, accumulation and application may be the source of superior performance. Other research has conceptualized organizational knowledge in terms of stocks of accumulated knowledge in the firm and flows of knowledge into the firm. This paper tests the relationship between stocks and flows of organizational knowledge and firm performance in the biotechnology industry. We suggest that a firm’s geographic location, alliances with other institutions and organizations and R&D expenditures are representative of knowledge flows, while products in the pipeline, firm citations and patents are indicative of knowledge stocks. Through factor analysis, we develop an aggregated measure of location from several variables. A regression model suggests that location is a significant predictor of firm performance as are products in the pipeline and firm citations. A major contribution of this investigation is the operationalization of geographic location and its statistically significant link to firm performance. Copyright © 1999 John Wiley & Sons, Ltd.  相似文献   
60.
Background: A five-year retrospective database analysis comparing the use of Floseal1 flowable topical hemostat alone (F) and in combination with gelatin/thrombin (F?+?G/T) to achieve hemostasis and control surgical bleeding showed higher resource utilization for F?+?G/T cases relative to F matched pairs during spinal surgery. Lower resource use in the F group was characterized by shorter hospital length of stay and surgical time as well as fewer blood transfusions and less hemostat agent used per surgery.

Objective: To evaluate the cost–consequence of using F compared to F?+?G/T in minor, major and severe spinal surgery from the US hospital perspective.

Methods: A cost–consequence model was developed using the US hospital perspective. Model inputs include clinical inputs from the literature, cost inputs (hemostatic matrices, blood product transfusion, hospital stay and operating room time) from the literature, and an analysis of annual spine surgery volume (minor, major and severe) using the 2012 National Inpatient Sample (NIS) database. Costs are reported in 2017?US dollars. One-way and probabilistic sensitivity analyses address sources of variability in the results.

Results: A medium-volume hospital (130 spine surgeries per year) using F versus F?+?G/T for spine surgeries is expected to require 85 less hours of surgical time, 58 fewer hospital days and 7 fewer blood transfusions in addition to hemostat volume savings (F: 1?mL, thrombin: 1994?mL). The cost savings associated with the hospital resources for a medium-volume hospital are expected to be $317,959 (surgical hours?=?$154,746, hospital days?=?$125,237, blood transfusions?=?$19,023, hemostatic agents?=?$18,953) or $2445 per spine surgery.

Conclusions: The use of F versus F?+?G/T could lead to annual cost savings for US hospitals performing a low to high volume of spinal surgeries per year.  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