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   172篇
  免费   9篇
管理学   11篇
民族学   1篇
人口学   19篇
丛书文集   6篇
理论方法论   22篇
综合类   58篇
社会学   48篇
统计学   16篇
  2024年   1篇
  2023年   4篇
  2022年   1篇
  2021年   2篇
  2020年   1篇
  2019年   8篇
  2018年   3篇
  2017年   7篇
  2016年   7篇
  2015年   7篇
  2014年   13篇
  2013年   33篇
  2012年   7篇
  2011年   11篇
  2010年   7篇
  2009年   4篇
  2008年   9篇
  2007年   11篇
  2006年   7篇
  2005年   7篇
  2004年   5篇
  2003年   3篇
  2002年   4篇
  2001年   4篇
  2000年   1篇
  1999年   2篇
  1998年   2篇
  1997年   2篇
  1996年   3篇
  1995年   1篇
  1989年   2篇
  1988年   1篇
  1983年   1篇
排序方式: 共有181条查询结果,搜索用时 15 毫秒
1.
This paper considers two types of chaotic map time series models, including the well-known tent, logistic and binary-shift maps as special cases; these are called curved tent and curved binary families. Deterministic behaviour is investigated by invariant distributions, Lyapunov exponents, and by serial dependency. Stochastic time reversal of the families is shown to produce models which have a broader range of stochastic and chaotic properties than their deterministic counterparts. The marginal distributions may have concentrations and restricted supports and are shown to be a non-standard class of invariant distribution. Dependenc y is generally weaker with the reversed stochastic models. The work gives a broad statistical account of deterministic and stochastically reversed map models, such as are emerging in random number generation, communica tion systems and cryptography  相似文献   
2.
This study was designed to determine the extent of sandwiched families and the impact of dependency and proximity to task assistance provided to parent(s). Data were collected in Idaho, Oregon, Utah, and Michigan from a random sample of 40–65-year-old respondents. Fifteen percent are sandwiched between needs of aging parents and financially dependent children. Respondents are much more likely to be providing assistance to mothers than fathers. Parents are most likely to live near, but not necessarily with, the respondent. Spouses and partners' parents, however, are likely to live farther away. Task assistance provided most often to aging parent(s) includes help with transportation and shopping; financial assistance was reported least often. Income of respondent and dependency and proximity of parents are significantly related to providing assistance to parents. This study offers a unique glimpse at the relationships between personal characteristics, dependency, proximity, and task assistance issues as they pertain to the sandwich generation.  相似文献   
3.
Resource Dependency Theory (RDT) and Global Value Chain (GVC) analysis have been deployed in the strategic and international management literatures to address questions of power in dyadic relationships and global production networks, respectively. This paper integrates the two theoretical approaches in order to expand RDT, using insights from Hirschman's exit/voice model to show the options available to some firms but not others. Using the relationship between buyers and contract manufacturers from GVC analysis, we find a correlation between firm size and choice of strategic action in response to contract manufacturers' dependence on buyers. Large firms follow an acquiescence strategy while small manufacturers follow an avoidance strategy, able to use both exit and voice strategies. Enabled by scale or control over information, both of these approaches successfully reduce uncertainty and provide a source of sustained competitive advantage. Using a study of the production chain in consumer plastics manufacturing in China, we show how dependent firms respond to GVC induced pressure. We find that based on the size of the contract manufacturer, the range of strategic responses to power is constrained by the nature of the dependency in global value chains. This opens important insights into the role that structural characteristics of organizations (like size) play in determining strategic freedom.  相似文献   
4.
量刑程序与定罪程序一样是刑事审判环节,具有独立性与依附性特征,而我国立法层面的量刑程序几乎是空白。我国在现有的司法环境下实行相对独立的量刑程序符合国际司法潮流,这一程序也没有增加各诉讼参加人的负担,较易操作落实,且有相关的配套程序和实践基础,因此具有可行性。但在实践中应注意一些问题,如要清晰控辩审三方在量刑程序中的定位,使社会调查报告机制走向制度化、专业化,判决书中应对量刑的依据和理由进行阐述等。  相似文献   
5.
人口较少民族经济向现代经济转变的路径分析   总被引:1,自引:1,他引:0  
在阐述路径依赖理论的基础上,结合人口较少民族经济的特点对人口较少民族经济向现代经济转变的路径进行了分析,提出要辩证地看待人口较少民族传统经济在这一转变中的影响和作用,认为人口较少民族实现经济转变的首要问题是打破经济封闭和信息封闭,在此基础上,将自身的特色优势与区域优势有效结合起来,将传统经济中的积极因素与现代经济因素有效结合起来,走因地制宜、循序渐进的转变路径。  相似文献   
6.
品牌延伸是新产品入市的重要手段。文章从信息储存和使用的角度对品牌认知结构和情景依赖水平如何影响消费者的品牌延伸评价进行了研究,并探讨了不同沟通方式(关系型和阐释型)对不同情景依赖水平消费者品牌延伸评价的影响。研究发现:情景独立的消费者,相对于情景依赖的消费者会有更积极的品牌延伸评价和更好的品牌延伸匹配度感知;关系型沟通能使情景独立者产生更积极的品牌延伸评价和更好的品牌延伸匹配度感知;阐释型沟通能使情景依赖者产生更积极的品牌延伸评价和更好的品牌延伸匹配度感知。  相似文献   
7.
治理我国新一轮通货膨胀的财税政策   总被引:3,自引:0,他引:3  
我国新一轮的通货膨胀不是商品供不应求的简单经济矛盾引起的,而是开放经济条件下的国内经济结构失衡和对外经济失衡导致的输入型通货膨胀.实施紧缩性货币政策虽然能暂时起到抑制投资过热、控制流动性过剩和通货膨胀的作用,并不能解决我国结构性失衡的深层经济矛盾.治理我国新一轮通货膨胀,不仅需要采取"从紧"控制总量的货币政策,更需要从解决我国经济结构性失衡的深层矛盾入手,采取"从优"调整结构的财税政策.  相似文献   
8.
Under the framework of media system dependency theory, this study investigates and compares traditional media dependency and Internet dependency in public health crisis situations in the context of Mainland China. 373 college students participated in the survey. Empirical data demonstrated that, during public health crises: (1) traditional media and the Internet play different roles for individuals; (2) higher level of threat perception leads to more intense Internet dependency, but does not do the same to traditional media dependency; (3) individuals’ Internet dependency intensity is higher than their traditional media dependency intensity; and (4) the Internet may influence the behavior of young Chinese more directly.  相似文献   
9.
城市化的快速发展使得城市空间关系不断变化,如何准确界定城市空间关系对城市战略选择至关重要。本文在总结前人对城市空间关系研究的基础上,将城市空间关系分为依附型、竞争型、共生型、异质型四种。进而在此基础上以黄冈为案例,研究黄冈与武汉城市圈内周边城市的关系,并提出黄冈的定位和发展战略。  相似文献   
10.
We extend the average derivatives estimator to the case of functionally dependent regressors. We show that the proposed estimator is consistent and has a limiting normal distribution. A consistent covariance matrix estimator for the proposed estimator is provided.  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