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   227篇
  免费   7篇
财政金融   40篇
工业经济   18篇
计划管理   45篇
经济学   31篇
综合类   3篇
运输经济   2篇
旅游经济   9篇
贸易经济   59篇
农业经济   17篇
经济概况   10篇
  2023年   8篇
  2021年   5篇
  2020年   8篇
  2019年   11篇
  2018年   7篇
  2017年   14篇
  2016年   8篇
  2015年   7篇
  2014年   14篇
  2013年   32篇
  2012年   8篇
  2011年   11篇
  2010年   13篇
  2009年   10篇
  2008年   7篇
  2007年   8篇
  2006年   6篇
  2005年   2篇
  2004年   2篇
  2003年   1篇
  2002年   6篇
  2001年   3篇
  2000年   2篇
  1999年   5篇
  1998年   2篇
  1997年   2篇
  1996年   6篇
  1993年   1篇
  1992年   1篇
  1991年   4篇
  1990年   4篇
  1989年   1篇
  1988年   2篇
  1987年   1篇
  1986年   2篇
  1985年   1篇
  1982年   3篇
  1980年   1篇
  1977年   1篇
  1976年   1篇
  1970年   1篇
  1966年   1篇
  1930年   1篇
排序方式: 共有234条查询结果,搜索用时 15 毫秒
91.
92.
Stephen Procter, Louise McArdle, Michael Rowlinson, Paul Forrester and John Hassard draw on the evidence of a longitudinal case study of a large electronics company to discuss the problems arising from the introduction and operation of a performance related pay system. These included resource constraints, difficulties in criteria selection, and subjectivity. Underlying these problems was the workforce's lack of confidence in the principle as well as the appication of the system. the authors conclude that companies face great difficulty in using such systems to effect cultural change: the necessary culture may already have to exist for such pay systems to work. Stephen Procter, Paul Forrester and John Hassard, respectively, are lecturers and Professor in the School of Management and Economics at the University of Keele, Louise McArdle is in the Department of Organisation Studies at the University of Central Lancashire, and Michael Rowlinson is in the Department of Sociology and Social Policy at the University of Southampton.  相似文献   
93.
Based on a graphical and statistical analysis of 1993 survey data, this article shows that educational inequalities among black school-age children were substantial and systematically associated with socio-economic status. Children of more affluent, better educated and metropolitan parents progressed better in schools, thus attaining higher levels of education, and also outperformed others who had progressed as far in terms of cognitive outcomes (measured by literacy and numeracy test scores). Thus, educational inequalities may become enduring, as the ability to benefit from education is usually transmitted across generations (better educated individuals obtain better jobs, and their children are again better educated). The abysmal educational quality of the largest part of the school system therefore has to be improved drastically, to allow poor children to overcome their socio-economic deficits and to benefit from education.  相似文献   
94.
Current models of diffuse pollution are characterised by a progressive engagement with remotely‐sensed data coupled with more elegant modelling approaches. Central to these new models is the concept of connectivity, which leads to the identification and prioritisation of those landscape units (e.g., fields) where the consequences of land management activities are most readily transmitted to watercourses. The practice of diffuse pollution modelling using such models encounters certain problems. Following Brewer (1999) we argue that interdisciplinarity offers the opportunity to overcome these problems through: (1) its explicit recognition of the framing implicit in model development; (2) an emphasis on context in problem‐solving; (3) methodological pluralism; and (4) following from these other factors, the possibility of a different sort of engagement between land managers and modellers. Hence, the case for developing interdisciplinary approaches goes beyond the conventional dictates of problem‐led research and points to very different ways of conducting diffuse pollution research, taking on board the full dimensions of interdisciplinarity, with its emphasis on reflexivity, contextuality, substance and engagement.  相似文献   
95.

The paper develops a formal model of coalition-building ("network" formation) among research units that seek competitive funding from a supra-regional program, while also drawing support from their respective regional funding agencies. This analysis is motivated by the absence of frameworks of analysis applicable to problems of design of public R&D funding arrangements in the European Union, and in other regional systems were independent programs of "federal and state" support for research co-exists. The model assumes a fixed finite population of research units and an associated distribution of reputed quality, or scientific reputation, which may be modified as a consequence of research results. Non-cooperative games of coalition formation developed by Bloch (1995), and Ray and Vohra (1999), provides a useful single-period framework for this part of the analysis. Collaborations are formed in the expectation of attracting incremental research funding, given the selection criteria of the agency that offers funding for "networks". Invitations to join proposals for networks are initiated and acted upon following a specific ordering procedure. This gives rise to a repeated non-cooperative game of coalition (or collaboration) formation, in which the distribution of payoffs within the collaboration is governed by a fixed rule. Following Keely (2002), this type of game is applied to a multi-period setting in which a distribution of coalitions is tracked, along with the levels of funding received. The latter are determined according to a rule comparing the distribution of reputations within proposed collaborations, and the effects upon the distribution of reputations in the entire population are analysed. Alternative possible external funding rules are evaluated with the help of a numerical example, to determine how their impacts upon collaboration formation, and the resulting evolution of the reputation distribution (as that will be affected by the allocation of funding).  相似文献   
96.
97.
This paper describes an exploratory study of an aspect of the technological knowledge of two groups of five-year-old students in their first year at school. Their emerging understandings of the steps required to develop a new product were investigated through a series of interviews. A theoretical framework linking technological knowledge to ‘funds of knowledge’ from experiences outside the classroom supported the analysis. The data suggest that young children draw on a broad range of experiences and knowledge, often uncritically, in order to explain how things are made. They are able to transfer their understandings of the technological process from one experience to another particularly when they have the language and background experiences to support them. Of particular note however, is that they were often unfamiliar with the properties of materials and therefore unable to anticipate the processes necessary to convert raw materials into a final product. The research also highlighted some key considerations for working with young children in this area.  相似文献   
98.
99.
We explore the factors influencing the internationalization of small family firms. Based on interviews with six family firms in Singapore, we highlight the importance of (1) family harmony, (2) trust in external relationships, (3) social and business networks, and (4) organizational resources and capabilities in the internationalization process. We show how the socioemotional wealth factors of trust and harmony affect networking and resources, which in turn affect internationalization. We find that initial internationalization through exports is enabled through trust in family networks, but the typical family characteristics of a desire to maintain family harmony and distrust of outsiders have a negative impact on network creation and resource development, which constrains the extent to which the firm internationalizes beyond exporting. In order to move from the first stage (exports/similar markets) to the second stage (joint ventures/different markets) of internationalization, less emphasis on trust and family harmony accompanied by more emphasis on building external networks and resources may be necessary. We propose a new model of internationalization of family firms based on our findings. © 2015 Wiley Periodicals, Inc.  相似文献   
100.
Study design: A Markov model was used to analyze cost-effectiveness over a lifetime horizon.

Objective: To investigate the cost-effectiveness of hydrophilic-coated intermittent catheters (HCICs) compared with uncoated catheters (UCs) among individuals with neurogenic bladder dysfunction (NB) due to spinal cord injury (SCI).

Setting: A Canadian public payer perspective based on data from Ontario; including a scenario analysis from the societal perspective.

Methods: A previously published Markov decision model was modified to compare the lifetime costs and quality-adjusted life years (QALYs) for the two interventions. Three renal function and three urinary tract infection (UTI) health states as well as other catheter-related events were included. Scenario analyses, including utility gain from compact catheter and phthalate free catheter use, were performed. Deterministic and probabilistic sensitivity analyses were conducted to evaluate the robustness of the model.

Results: The model predicted that a 50-year-old patient with SCI would gain an additional 0.72 QALYs if HCICs were used instead of UCs at an incremental cost of $48,016, leading to an incremental cost-effectiveness ratio (ICER) of $66,634/QALY. Moreover, using HCICs could reduce the lifetime number of UTI events by 11%. From the societal perspective, HCICs cost less than UCs, while providing superior outcomes in terms of QALYs, life years gained (LYG), and UTIs. The cost per QALY further decreased when health-related quality-of-life (HRQoL) gains associated with compact HCICs or catheters not containing phthalates were included.

Conclusion: In general, ICERs in the range of CAD$50–100,000 could be considered cost-effective. The ICERs for the base case and sensitivity analyses suggest that HCICs could be cost-effective. From the societal perspective, HCICs were associated with potential cost savings in our model. The results suggest that reimbursement of HCICs should be considered in these settings.  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