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   139192篇
  免费   3969篇
  国内免费   3篇
财政金融   26433篇
工业经济   11329篇
计划管理   22745篇
经济学   30403篇
综合类   2092篇
运输经济   938篇
旅游经济   2543篇
贸易经济   22195篇
农业经济   6483篇
经济概况   17722篇
信息产业经济   7篇
邮电经济   274篇
  2021年   976篇
  2020年   1814篇
  2019年   2493篇
  2018年   2400篇
  2017年   2672篇
  2016年   2786篇
  2015年   2229篇
  2014年   3608篇
  2013年   15728篇
  2012年   4634篇
  2011年   4819篇
  2010年   4277篇
  2009年   4802篇
  2008年   4459篇
  2007年   3635篇
  2006年   4023篇
  2005年   3990篇
  2004年   3267篇
  2003年   2933篇
  2002年   2931篇
  2001年   2650篇
  2000年   2447篇
  1999年   2259篇
  1998年   2108篇
  1997年   2105篇
  1996年   1987篇
  1995年   1979篇
  1994年   1988篇
  1993年   1966篇
  1992年   1954篇
  1991年   1863篇
  1990年   1723篇
  1989年   1580篇
  1988年   1507篇
  1987年   1523篇
  1986年   1597篇
  1985年   2362篇
  1984年   2263篇
  1983年   2057篇
  1982年   1914篇
  1981年   1906篇
  1980年   1867篇
  1979年   1772篇
  1978年   1605篇
  1977年   1592篇
  1976年   1350篇
  1975年   1241篇
  1974年   1167篇
  1973年   1150篇
  1972年   863篇
排序方式: 共有10000条查询结果,搜索用时 218 毫秒
101.
This paper investigates the implementation of “one village, one product” (OVOP) in four peri‐urban villages in China's Yangtze River Delta. China's agricultural transformation, including the introduction of new corporate actors and the growing pressure of market discipline, has challenged the relevance of villages in the organization of agricultural production. In response, village cadres in thousands of Chinese villages have used OVOP to transform their villages into agro‐industrial firms and re‐exert their control over the agricultural surplus, echoing earlier examples of village corporatism. Rooted in agricultural specialization, OVOP encompasses a diversity of strategies for the production of locality‐based value. I disaggregate these strategies into four sociospatial dimensions that comprise locality—place, network, territory, and scale. Place‐based branding is the dominant strategy, but village cadres also pursue complementary sociospatial strategies to ensure their control over the realization of the brand's value and reconstitute their redistributive and administrative powers.  相似文献   
102.
Empowering women farmers to participate in agricultural research is a key strategy for sustainable agricultural development. Women empowerment has the potential to improve their roles in agricultural production while enhancing nutrition and food security. Although new agricultural development policies are focusing on improving women engagement in agriculture, there is limited literature on women empowerment in relation to agricultural research. This study used mixed methods to analyse women farmers’ participation in four stages of the agricultural research process – design, testing, dissemination, monitoring and evaluation. Two hundred and thirty individual interviews with women farmers and 16 focus group discussions with men and women farmers were conducted in four Woredas (districts) of Ethiopia. Quantitative data were analysed using binary and multivariate probit models. Qualitative data were analysed using line-by-line coding. The results showed that several empowerment indicator variables significantly (p?≤?.001) influenced women’s participation in different stages of agricultural research. Specifically, input in production decisions, autonomy in plot management, membership to farmer groups, and ability to speak in public enhanced women’s participation in different stages, in addition to access to information and extension services, education and land size. Cultural norms hindered women’s empowerment and engagement in research. To foster sustainable agriculture development, it’s important to integrate holistic and proactive gender perspectives into research strategies to increase women’s participation in farmer research groups, access information and knowledge, have voice and challenge constraining cultural norms and traditions.  相似文献   
103.
Drawing insights from the broader training literature, we argue that evaluation of cross-cultural training effectiveness should adopt comprehensive criteria, including cognitive, skill-based, and affective learning outcomes as well as adaptive transfer. We propose that the integration of an error management supplement in cross-cultural training can enhance trainee acquisition of self-regulation skills and self-efficacy that facilitate adaptive application of learning to novel cultural situations. In addition to the traditional error management training designs (i.e., positive error framing), the current paper describes additional design elements to promote acquisition of cognitive strategies, prevent premature automaticity, alleviate concerns about error occurrence during learning, and enhance readiness to transfer. In addition, we offer propositions regarding the effects of the supplement on learning and transfer outcomes, along with implications for future research and practice on cross-cultural training.  相似文献   
104.

A compelling body of research has found that investments in knowledge from other firms and universities spill over to enhance the performance of entrepreneurial firms. This literature has shown that firm performance is positively related to investments in new knowledge by other firms and research universities. This paper addresses a gap in the literature by positing that public sector knowledge is also conducive to enhancing performance by knowledge intensive entrepreneurial (KIE) firms. Our findings suggest that the public sector provides a fertile source of knowledge for enhancing KIE firm performance.

  相似文献   
105.
106.
Supersaturated designs (SSDs) constitute an important class of fractional factorial designs that could be extremely useful in factor screening experiments. Most of the existing studies have focused on balanced designs. This paper provides a new lower bound for the \(E(f_{NOD})\)-optimality measure of SSDs with general run sizes. This bound is a generalization of existing bounds since it is applicable to both balanced and unbalanced designs. Optimal multi and mixed-level, balanced and nearly balanced SSDs are constructed by applying a k-circulant type methodology. Necessary and sufficient conditions are introduced for the generator vectors, in order to pre-ensure the optimality of the constructed k-circulant SSDs. The provided lower bounds were used to measure the efficiency of the generated designs. The presented methodology leads to a number of new families of improved SSDs, providing tools for directly constructing optimal or nearly-optimal k-circulant designs by just checking the corresponding generator vector.  相似文献   
107.
108.
109.
Companies commonly issue sustainability or corporate social responsibility (CSR) reports. This study seeks to understand worldviews of corporate sustainability, or the corporate message conveyed regarding what sustainability or CSR is and how to enact it. Content analysis of corporate sustainability reports is used to position each company report within stages of corporate sustainability. Results reveal that there are multiple coexisting worldviews of corporate sustainability, but the most dominant worldview is focused on the business case for sustainability, a position anchored in the weak sustainability paradigm. We contend that the business case and weak sustainability advanced in corporate sustainability reports and by the Global Reporting Initiative are poor representations of sustainability. Ecological embeddedness, or a locally responsive strategy that is sensitive to local ecosystems, may hold the key to improved ecological sensemaking, which in turn could lead to more mature levels of corporate sustainability worldviews that support strong sustainability and are rooted in environmental science. This must be supported by government regulation. Copyright © 2017 John Wiley & Sons, Ltd and ERP Environment  相似文献   
110.
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