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   613篇
  免费   45篇
财政金融   93篇
工业经济   28篇
计划管理   135篇
经济学   175篇
运输经济   11篇
旅游经济   12篇
贸易经济   140篇
农业经济   26篇
经济概况   34篇
邮电经济   4篇
  2023年   17篇
  2022年   16篇
  2021年   14篇
  2020年   29篇
  2019年   57篇
  2018年   44篇
  2017年   46篇
  2016年   32篇
  2015年   27篇
  2014年   32篇
  2013年   84篇
  2012年   36篇
  2011年   32篇
  2010年   26篇
  2009年   29篇
  2008年   29篇
  2007年   9篇
  2006年   12篇
  2005年   12篇
  2004年   5篇
  2003年   15篇
  2002年   4篇
  2001年   9篇
  2000年   8篇
  1999年   4篇
  1998年   1篇
  1997年   3篇
  1996年   3篇
  1994年   1篇
  1993年   1篇
  1992年   1篇
  1990年   1篇
  1989年   1篇
  1988年   1篇
  1986年   3篇
  1985年   3篇
  1984年   1篇
  1983年   1篇
  1980年   3篇
  1978年   1篇
  1970年   1篇
  1969年   1篇
  1968年   1篇
  1966年   1篇
  1939年   1篇
排序方式: 共有658条查询结果,搜索用时 15 毫秒
41.
Fixed costs associated with learning about demand and setting up distribution networks are expected to be lower when there are more potential contacts in the destination market, suggesting a greater probability of market entry and larger export revenues. We match historically-determined emigration stocks with detailed firm-level data from Portugal to examine the effect of migrant networks on these export outcomes. We find that larger stocks of emigrants in a given destination increase export participation and intensity. In addition, we show that the former of these effects tends to be more pronounced among firms that are more likely to have close ties with the emigrants. These results are consistent with a multiple-destination version of the Melitz (2003) model featuring market-specific entry costs and idiosyncratic firm-destination demand shocks.  相似文献   
42.
43.
We study the business‐cycle behavior of segmented labor markets with flexibility at the margin (e.g., just affecting fixed‐term contracts). We present a matching model with temporary and permanent jobs (i) where there is a gap in the firing costs associated with these types of jobs and (ii) where there are restrictions in the creation and duration of fixed‐term contracts. We show that a labor market with ``flexibility at the margin'' increases the unemployment volatility with respect to one that is fully regulated. This analysis yields new insights into the interpretation of the recent volatility changes witnessed in the OECD area.  相似文献   
44.
45.
Psychometrically sound evaluation measures are vital for examining the contribution of professional training to organizational success in a reliable manner. As training evaluations tend to be both time‐consuming and labor‐intensive, there is an increasing demand for economic evaluation inventories. Simultaneously, evaluation measures have to meet psychometric standards. The present paper develops a time‐efficient training evaluation questionnaire that (1) has psychometrically sound properties; (2) measures more than the participants’ reactions; and (3) is widely applicable across different training contents, thus allowing for comparisons of training programs within and between organizations. The Questionnaire for Professional Training Evaluation is primarily developed for use in practice but is also applicable to field research and covers short‐term as well as long‐term training outcomes. Analyses based on a total of n = 1134 employees show the stability of the factor structure and hint at the questionnaire's differential and discriminant validity. Theoretical and practical implications are discussed.  相似文献   
46.
This article aims to evaluate the production line automation projects developed by Brazilian and Colombian companies from the Project Management perspective, through the analysis of the application degree of PMBOK processes, to understand how formal techniques are being employed in these countries and also to identify improvement opportunities, when necessary. Data were collected through a survey. The similarity index between the ten processes, with the highest application degree in the Brazilian and Colombian samples, was 70%. For the processes with the lowest application degree, the similarity index was 60%. No similar study was found in the literature.  相似文献   
47.
This article researches how a corporate code of ethics (CCE) implemented in local government X has influenced the behavior of its employees, middle managers, and managers. Metaphors from the existing and desired CCE elicited by these three groups provided information on how to improve the effectiveness of the CCE. This method proved to be very fruitful. It appeared that continuous systematic attention needed to be paid to the CCE after the CCE had been implemented, particularly by management. Initiatives from management to start discussions about relevant questions of integrity appeared to be also necessary to make the topic a “normal” topic which employees were no longer afraid to discuss. In this way, the possibility could be created to develop collectively a “practical” frame of reference concerning relevant questions of integrity that would help employees to make decisions in difficult situations during their work in the future.  相似文献   
48.
49.
This paper addresses the topic of business network dynamics. Starting with a review of the IMP literature, it aims to shed light on potential relational paths by which a firm may reconfigure its business network. To this end, two main emerging paths are described: integration and substitution. Methodologically, the paper presents and discusses the data collected during a longitudinal case analysis of four Italian textile producers. The main implications for business networks stemming from these emerging relational paths are described. In particular, the main findings from the cases analyzed suggest that business network dynamics should be interpreted in terms of the processes of both business network change and consolidation.  相似文献   
50.
Aims: Although several therapeutic options are available for chronic immune thrombocytopenic purpura (cITP), little is known about the treatment of cITP in Brazil.

Materials and methods: A multi-center, retrospective chart review, observational study was designed to describe the treatment patterns, clinical burden, resources use, and associated costs for adult patients diagnosed with cITP and treated in public and private institutions in Brazil. Patient charts were screened in reverse chronological order based on their last visit post January 1, 2012. (All costs were calculated using 1.00 USD?=?3.9571 BRL, from February 2016.)

Results: Of 340 patient charts screened, 50 patients were eligible for inclusion in the study. Single-drug therapy (prednisone, dexamethasone, or dapsone) was the most commonly used treatment, followed by combination therapies (azathioprine?+?prednisone, azathioprine?+?prednisone?+?danazol, and prednisone?+?dapsone). Splenectomy was performed in 22% of patients after at least first-line treatment. Platelet count and number of bleeding episodes at diagnosis were 31,561.1/mm3 (SD?=?±26,396.1) and 40 episodes, respectively; in first-line, 92,631.1/mm3 (SD?=?±79,955.3) and 19 episodes, respectively; in second-line, 96,950.0/mm3 (SD?=?±76,476.4) and 17 episodes, respectively. Private system patients had a higher median cost compared to public system patients (USD 17.49/month, range?=?0–2,020.77 vs USD 9.51/month, range?=?0–192.64, respectively).

Limitations: This study does not allow conclusions for causal explanations due to the cohort study design, and treatment patterns represent only the practices of physicians who have agreed to participate in the study.

Conclusions: The data indicate that available therapeutic strategies for second- and third-line therapies appear to be limited.  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