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   351篇
  免费   12篇
财政金融   50篇
工业经济   14篇
计划管理   85篇
经济学   87篇
综合类   1篇
运输经济   2篇
旅游经济   7篇
贸易经济   68篇
农业经济   16篇
经济概况   33篇
  2024年   1篇
  2023年   11篇
  2022年   3篇
  2021年   20篇
  2020年   17篇
  2019年   27篇
  2018年   18篇
  2017年   16篇
  2016年   19篇
  2015年   7篇
  2014年   11篇
  2013年   46篇
  2012年   7篇
  2011年   15篇
  2010年   9篇
  2009年   11篇
  2008年   6篇
  2007年   7篇
  2006年   4篇
  2005年   4篇
  2004年   8篇
  2003年   6篇
  2002年   3篇
  2001年   5篇
  2000年   2篇
  1999年   8篇
  1998年   2篇
  1997年   3篇
  1996年   2篇
  1995年   3篇
  1994年   1篇
  1993年   4篇
  1992年   2篇
  1991年   3篇
  1989年   1篇
  1987年   3篇
  1986年   6篇
  1985年   4篇
  1984年   2篇
  1983年   4篇
  1982年   5篇
  1981年   2篇
  1980年   6篇
  1979年   1篇
  1978年   5篇
  1977年   3篇
  1976年   5篇
  1975年   4篇
  1969年   1篇
排序方式: 共有363条查询结果,搜索用时 562 毫秒
231.

The aim of this study is to explain the determinants of entrepreneurship in agriculture industry. What are the drivers of early stage entrepreneurial activity of agri-business entrepreneur and how it is influenced by various cognitive and social capital factors? To answers these questions various driving factors of entrepreneurial activity have been explored from the literature. To achieve the objective, the study uses APS (Adult Population Survey) 2013 data of 69 countries provided by GEM (Global Entrepreneurship Monitor). Total number of respondents 1470, those who are alone or with others, currently trying to start a new business, including any self-employment or selling any goods or services to others in Agriculture Industry, were selected from the data set. To measure the influence of cognitive and social capital factors on early stage entrepreneurial activity logistic regression was employed. The findings show that those who see entrepreneurial opportunities, are confident in their own skills and ability, having personal relationship or social networks with existing entrepreneurs, and have invested in others business as business angels are more likely to become an entrepreneur. Additionally, fear of failure or risk perception does not prevent people to become entrepreneur. Policy implications have been discussed. This is one the first study of its kind and contributes to the existing literature by explaining agricultural entrepreneurship through an integrated approach of entrepreneurial cognition and social networking.

  相似文献   
232.
Twitter provides an important channel for brands to seed electronic word of mouth (eWOM) by followers retweeting brand messages, but prior research has not established a theoretical framework for how brands can maximise eWOM. This study presents and tests a theoretical model incorporating interactive, textual and visual tweet features to predict eWOM, using tweets by leading brands from three industries. Industry was found to be an important moderator of the effect of tweet features; after controlling for the reach and frequency of tweets, hashtags, retweet requests and photos were consistently associated with a higher retweet rate across industries, but the effect of URL links, non-initial mentions and video varied across industries, in some cases decreasing the retweet rate. Implications for research and practice are discussed.  相似文献   
233.
Fair value accounting (FVA) has been blamed for amplifying the financial crisis of 2008–2009. We investigate investor and creditor reactions to policymaker deliberations, recommendations and decisions about FVA and impairment rules in the banking industry. If FVA was a key contributor to the financial crisis as some industry pundits and academic research suggest, we first should observe positive stock market reactions to proposals that relax FVA rules and negative reactions when policymakers support FVA. Second, we investigate cross-sectional stock price reactions to bank-specific factors that potentially contributed to pro-cyclical contagion. Third, we examine whether banks that have fewer alternative sources of information about fair values experience relatively negative reactions to potential relaxation of FVA and impairment rules. Finally, we investigate credit market reactions to these policy deliberations, recommendations and decisions by examining changes in credit default swap spreads for a subset of banks in our sample.  相似文献   
234.
The objective of this study was to assess the average out-of-pocket healthcare and work-loss costs of road traffic injuries (RTI) in Karachi. In this cross-sectional study, RTI patients presenting to the five trauma centres in Karachi were contacted using stratified sampling to report their inpatient and outpatient expenses, the time spent in hospital and their average monthly income. These costs were compared among different categories of patient-related variables using analysis of variance test. Out of 341 RTI victims, two wheelers accounted for the majority of injuries (77.2%, N?=?256) followed by pedestrians (14.2%, N?=?48). Almost half of the sample patients were breadwinners (N?=?135, 45.2%), with 87.4% (N?=?118) earning less than US$ 248. Average out-of-pocket healthcare costs were US$ 271 (SD?=?440.9), which were significantly higher (P ≤ 0.026) for pedestrians (US$ 442), moderate (US$ 341.7) or severe (US$ 553.8) injury, and treatment in private hospitals (US$ 451.7). Similarly, average work loss was US$ 67.1 (SD?=?132.1), which were significantly higher (P?=?0.001) for breadwinners (US$ 99.1), moderate (US$ 130.0) or severe (US$ 157.1) injury, and treatment in private hospitals (US$ 150.0). Study results clearly showed the need to advocate RTI prevention measures in Pakistan as any such event could lead to a difficult economic situation for those involved and their family.  相似文献   
235.
The objective of the study is to examine the impact of technical progress in agriculture on changes in rural poverty in Pakistan by using annual data from 1975–2011. Data is analyzed by the set of sophisticated econometric techniques i.e., cointegration theory, Granger causality test and variance decomposition, etc. The results reveal that agricultural technology indicators act as an important driver to alleviate rural poverty in Pakistan. Granger causality test indicate that causality runs from technological indicators to rural poverty but not vice versa. However, agricultural irrigated land and industry value added, both does not Granger cause rural poverty, which holds neutrality hypothesis between the variables. Variance decomposition analysis shows that among all the technological indicators, agricultural machinery in form of tractors have exerts the largest contribution to changes in rural poverty in Pakistan. The study concludes that agricultural technology indicators are closely associated with economic growth and rural poverty in Pakistan. Technology in Pakistan has a low pace but still old technology continuously contributed towards poverty reduction. The question whether idea machine is broken down or not? Still need further exploration.  相似文献   
236.
This paper computes and decomposes Färe‐Primont indexes of total factor productivity of Australian broadacre agriculture by estimating distance functions. Using state‐level data from 1990 to 2011, the empirical results show that TFP grew at an average rate of 1.36 per cent per annum in the broadacre agriculture over the period 1990–2011. There are variations of total factor productivity (TFP) growth across states and fluctuations over time within each state and territory. However, overall, there is a clear movement towards slower TFP growth across the sample period. Further decomposition of TFP growth shows that it is declining growth in technical possibilities (technological progress) that is the main driver of the declining trend in productivity growth in broadacre agriculture in Australia.  相似文献   
237.
238.
There is a growing scientific consensus that limiting the increase in global average temperature to around 2 °C above pre-industrial levels is necessary to avoid unacceptable impact on the climate system. This requires that the developed countries’ emissions are radically reduced during the next 40 years. Energy scenario studies provide insights on the societal transitions that might be implied by such low-carbon futures, and in this paper we discuss how a greater attention to different governance and institutional issues can complement future scenario exercises. The analysis is based on a critical review of 20 quantitative and qualitative scenario studies, all of relevance for meeting long-term climate policy objectives. The paper: (a) analyzes some key differences in energy technology mixes and primary energy use patterns across these studies; (b) briefly explores the extent and the nature of the societal challenges and policy responses implied; and (c) discusses a number of important implications for the design and scope of future scenario studies. Our review shows that in previous scenario studies the main attention is typically paid to analyzing the impact of well-defined and uniform policy instruments, while fewer studies factor in the role of institutional change in achieving different energy futures. We therefore point towards a number of strategies of integrating issues of transition governance into future scenario analyses, and argue for a closer synthesis of qualitative and quantitative scenario building.  相似文献   
239.
We present a substantive and far-reaching generalization of the principal results in the economics of forestry, as formalized by Mitra and Wan (1986). Rather than a polarized dichotomy of linear and strictly concave, differentiable benefit (felicity) functions, we develop the theory in the context of functions that are supported at the golden-rule consumption and are not necessarily concave. Through a non-interiority condition on the set of zeroes of a resulting “discrepancy function,” we show the equivalence of finitely-maximal, maximal, minimal value-loss and optimal programs, and thereby answer questions left open by Brock and Mitra. Our synthesizing criterion is new to the capital theory literature, and in the concave setting, proves to be necessary and sufficient for the asymptotic convergence of good programs.  相似文献   
240.
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