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   2449篇
  免费   55篇
  国内免费   10篇
管理学   77篇
民族学   25篇
人口学   37篇
丛书文集   289篇
理论方法论   84篇
综合类   1598篇
社会学   98篇
统计学   306篇
  2023年   2篇
  2022年   3篇
  2021年   12篇
  2020年   11篇
  2019年   12篇
  2018年   11篇
  2017年   29篇
  2016年   27篇
  2015年   34篇
  2014年   289篇
  2013年   327篇
  2012年   121篇
  2011年   239篇
  2010年   318篇
  2009年   250篇
  2008年   216篇
  2007年   88篇
  2006年   74篇
  2005年   81篇
  2004年   91篇
  2003年   82篇
  2002年   56篇
  2001年   44篇
  2000年   26篇
  1999年   14篇
  1998年   10篇
  1997年   8篇
  1996年   3篇
  1995年   1篇
  1994年   2篇
  1993年   2篇
  1992年   4篇
  1991年   5篇
  1990年   7篇
  1989年   4篇
  1988年   1篇
  1986年   1篇
  1985年   1篇
  1983年   3篇
  1982年   1篇
  1981年   1篇
  1976年   2篇
  1966年   1篇
排序方式: 共有2514条查询结果,搜索用时 339 毫秒
121.
改革开放以来,民族地区的经济发展与沿海城市、内地城市的差距越来越大,面临着人与自然如何协调发展、如何进行可持续发展等问题。科学发展观作为中国共产党人集体智慧的结晶,是指导我国经济发展的科学战略,对于我国民族地区经济法制建设具有重要的指导作用。  相似文献   
122.
近代以来,被字句的使用范围有所扩大,突破了遭受义的范围,不断向中性义和受益义发展。从语篇功能的角度出发,可以发现篇章连贯的需要是促使被字句发展的语言内部动因。而当下日新月异的网络社会下,传统被字句受到干扰,遭受义又重新被强化。  相似文献   
123.
In a make-to-order environment, lead time and price can play a crucial role in determining the financial success of a firm. Their importance increases when demand is sensitive to the quoted lead time and price. A model is presented which uses the quoted lead time and price as a mechanism to determine the optimal demand level. The relationships between the model parameters and their impacts on the firm's profit is also analysed. In addition, the effect of the number of job requests, and the mean processing time are examined. Based on the results presented in this paper, there is clear indication that the firm's profit is sensitive to the inventory holding rate, and that the inventory holding cost component is redundant in the presence of a tardiness cost component.  相似文献   
124.
This research examined the effects of a casino’s auditory character on estimates of elapsed time while gambling. More specifically, this study varied whether the sound heard while gambling was ambient casino sound alone or ambient casino sound accompanied by music. The tempo and volume of both the music and ambient sound were varied to manipulate temporal engagement and introspection. One hundred and sixty (males = 91) individuals played slot machines in groups of 5–8, after which they provided estimates of elapsed time. The findings showed that the typical ambient casino auditive environment, which characterizes the majority of gaming venues, promotes understated estimates of elapsed duration of play. In contrast, when music is introduced into the ambient casino environment, it appears to provide a cue of interval from which players can more accurately reconstruct elapsed duration of play. This is particularly the case when the tempo of the music is slow and the volume is high. Moreover, the confidence with which time estimates are held (as reflected by latency of response) is higher in an auditive environment with music than in an environment that is comprised of ambient casino sounds alone. Implications for casino management are discussed.  相似文献   
125.
面向留学生的汉字书法教学刍议   总被引:1,自引:0,他引:1  
有针对性的汉字书法教学能提高留学生对汉字的认识、记忆和书写能力。面向留学生的汉字书法教学需注意教学内容、教学方法与学习方法。  相似文献   
126.
This paper explores the historical change in the work-leisure balance using time-diary evidence. Much of the recent discussion of this balance in the developed world has focused on paid work alone. What follows takes a different approach, considering the balance of all work time (paid plus unpaid) against leisure time and observes a tendency over recent decades for leisure to decline relative to work in this broad sense. Much is changing, in employment, family and consumption terms over this period. One possibility is that the relative increase in work time reflects the reversal of the status/leisure gradient: the financially privileged classes, which once had more leisure than others, now have less. But the paper closes with the speculation that this increase in work time for both men and women may be indirectly connected with the phenomenon of the women’s “dual burden”, via an unconsidered but nevertheless important principle of fairness in the distribution of work within households.  相似文献   
127.
针对中国国际收支不平衡问题,采用对比分析的方法,分析了国际收支存在服务、收益项目发展滞后,净误差与遗漏账户逆差,外汇储备过大等问题,提出处理好货物出口与服务出口,汇率贬值与升值,储备增长与防范风险,加强收支统计与打击逃汇、骗汇关系等解决策略。研究结论对调控国际收支有指导意义。  相似文献   
128.
疑问代词除了表示询问、任指和虚指外,还有一个重要的用法,即用在反问句中表示否定。文章以"怎么"为例,根据其出现的语言环境,分类考察了"怎么+AD+VP"用于表示否定出现的句法环境、语义以及功能,并从反问句的句法机制和主观性因素的角度分析了其表示否定意义的原因。  相似文献   
129.
省体字是正字的简省字体,有简省部件和简省笔画.省体字作为东汉镜铭最常见的书写形态,表现出了丰富多样的省体特征,同时与汉代隶变关系密切,既反映了汉代篆书向隶书演变的进程,又受到汉代隶变和草书的影响与渗透.镜铭省体字的形成一方面受到隶变与东汉用字混乱,缺少规范的影响,另一方面又与东汉私人铸镜繁荣,民间镜工文化水平不高直接相关.  相似文献   
130.
The scheduling problem in production management has been studied for a considerable time, and several types of software are used. A problem arises in updating the production planning, or ‘rescheduling’, when an unexpected event occurs in the shop control. Solving this problem is difficult because the implications of such events are usually impossible to forecast. To prevent this problem, we propose to manipulate a set of equivalent schedules during the short time schedule. Then, if an unexpected event prevents realization of a given schedule, it will be possible to find an equivalent one, without full rescheduling. The primary requirement is to find a formal representation of a set of schedules. This has already been explored using CPM graphs with nodes associated to a set of tasks. We propose in this paper to use an extension of such graphs, PQR trees, that represent both precedence and group constraints. We first reiterate the notion of PQR trees. We present methods to take into account date constraints in such a structure, and we give a model for the general job-shop problem.  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