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   841篇
  免费   34篇
  2023年   11篇
  2022年   9篇
  2021年   4篇
  2020年   30篇
  2019年   30篇
  2018年   52篇
  2017年   65篇
  2016年   46篇
  2015年   31篇
  2014年   50篇
  2013年   210篇
  2012年   26篇
  2011年   34篇
  2010年   27篇
  2009年   22篇
  2008年   41篇
  2007年   35篇
  2006年   14篇
  2005年   16篇
  2004年   8篇
  2003年   5篇
  2002年   11篇
  2001年   7篇
  2000年   5篇
  1999年   7篇
  1998年   10篇
  1997年   4篇
  1996年   5篇
  1995年   3篇
  1994年   5篇
  1993年   4篇
  1992年   2篇
  1991年   3篇
  1989年   5篇
  1988年   2篇
  1986年   5篇
  1984年   2篇
  1983年   2篇
  1981年   4篇
  1979年   3篇
  1978年   1篇
  1977年   3篇
  1975年   1篇
  1973年   2篇
  1972年   2篇
  1970年   1篇
  1969年   1篇
  1968年   1篇
  1966年   2篇
  1947年   1篇
排序方式: 共有875条查询结果,搜索用时 15 毫秒
101.
The Romanian dairy-farming sector is marked by subsistence and semi-subsistence farms. Through consolidation in the retail and dairy sector, the price pressure has moved toward producers of raw milk. Through new European, national and private standards and global actors tapping into the Romanian market this development is reinforced. At the same time, the smallholders, formerly accepted to be acting on an informal level, cannot access their main distribution channels anymore. Additionally, through several legal constraints being developed since Romania’s accession to the European Union, the smallholders are neither able to issue invoices, nor to access certain subsidy programmes as they are not considered juridical persons. This article focuses on the consequences of this disembedding of farmers. The peasants are pushed toward informal activities or value chain positions, in which they do not have any bargaining power with the globally sourcing intermediaries they are supplying. The contemporary approaches of global value chains and global production networks build the theoretical framework for the study. Here it is argued that informal markets must be included into these approaches more concisely.  相似文献   
102.
103.
People with disabilities, especially women, suffer from appallingly high rates of poverty, and paid work is frequently cited as a primary route out of poverty. I draw on feminist analyses of work and disability studies to reflect on the Canadian federal government's Employment Equity Act. I use the example of the ‘Big Six’ banks to investigate the numerical representation and occupational distribution of women and men with disabilities compared to their counterparts without disabilities. However, social justice in the workplace is at least as much about the quality of social relationships as it is about statistical effects. Reaching workplace equity also involves the creation of a workplace climate where people with disabilities experience supportive and responsive supervision, along with a sense of being respected and valued. I assess the banks’ progress towards identifying and eliminating discriminatory disabling barriers. I close with a discussion of workplace climate and locate the Act in the context of a broader network of change that includes challenging ableism.  相似文献   
104.
105.
106.
107.
108.
While state governments have enjoyed greater control over regulating local telephone service providers since 1984, movement toward efficiency-based policy reform (e.g., adoption of competitive markets) has proceeded slowly. We investigate this pattern by addressing how the degree of policy discretion held by state public utility commissions (PUCs) affects reform of local telephone exchange regulation. Using precise measures of both PUC discretion and state policy changes over time, we find that states with "stronger" PUCs (more policymaking authority) are significantly more likely to move toward efficiency-based policy regimes and away from traditional rate-of-return regimes. Greater PUC discretion systematically related to state adoption of efficiency-based reforms over time suggests that regulators are using updated information about policy impacts to inform their policymaking activities. Our findings contradict a common presumption that regulatory bureaucracies are simply motivated by a desire to increase their control over policymaking. Instead, state PUCs are a key source of telecommunications policy reform in the states.  相似文献   
109.
Nondestructive analyses of medieval reverse paintings on glass revealed the same dyes and pigments customarily used in panel paintings. However, there is one exception: the black colorant is not a carbon-based pigment, but black enamel. In this respect, the stylistic as well as the technical influence of stained glass artwork can clearly be seen on reverse paintings on glass. However, there is a crucial difference: in reverse paintings, the black enamel is not fired onto the glass but painted (cold painting). Additional analyses confirmed these findings. Based on these results, the art form “reverse painting on glass” has technically to be characterized as a mixture of “stained glass” and “panel painting” that nonetheless develops into a genre of its own.  相似文献   
110.
Although the forager–farmer interaction model successfully explains the gradual transmission of farming technology to foraging groups, it fails to explain rapid, abrupt transition to agricultural economies. This paper suggests that interaction between farmers and foragers often includes conflict and competition over land and that this conflict between different land-use strategies may lead to a rapid, discontinuous transition of subsistence economy. Comparing southern Scandinavian and central-western Korean cases, this paper suggests that the rapid transition to an agricultural economy in central-western Korea was a consequence of the appearance of territoriality of farmers in mobile, land-sharing context, resulting in a decrease in number of resource patches available to foragers.  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