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   132690篇
  免费   4492篇
  国内免费   1240篇
管理学   2715篇
劳动科学   22篇
民族学   2552篇
人才学   24篇
人口学   2035篇
丛书文集   18309篇
理论方法论   5614篇
综合类   98991篇
社会学   5346篇
统计学   2814篇
  2024年   187篇
  2023年   718篇
  2022年   995篇
  2021年   1228篇
  2020年   1529篇
  2019年   1369篇
  2018年   1331篇
  2017年   1681篇
  2016年   1935篇
  2015年   2710篇
  2014年   6790篇
  2013年   7227篇
  2012年   8241篇
  2011年   9826篇
  2010年   8031篇
  2009年   8128篇
  2008年   8463篇
  2007年   10526篇
  2006年   10614篇
  2005年   9652篇
  2004年   8957篇
  2003年   8798篇
  2002年   7079篇
  2001年   6004篇
  2000年   3185篇
  1999年   898篇
  1998年   475篇
  1997年   350篇
  1996年   266篇
  1995年   229篇
  1994年   157篇
  1993年   154篇
  1992年   141篇
  1991年   108篇
  1990年   51篇
  1989年   93篇
  1988年   34篇
  1987年   32篇
  1986年   16篇
  1985年   32篇
  1984年   39篇
  1983年   29篇
  1982年   27篇
  1981年   15篇
  1980年   16篇
  1979年   22篇
  1978年   19篇
  1977年   5篇
  1976年   4篇
  1975年   6篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
31.
袁了凡(袁黄)以其《了凡四训》闻名于世,该书亦被当作训子家书。其实,了凡所作家训并非《了凡四训》,而是《训儿俗说》。作为王龙溪(王畿)的及门弟子,了凡在思想上是阳明后学的一分子,其人生轨迹属于典型的儒家士大夫,其日常修持及著述呈现三教汇通的思想特色。了凡家风淳朴,家学深厚,以儒为宗,兼收并蓄,强调道德主义,注重积德行善,具有出世情怀,对其人格产生深刻影响。  相似文献   
32.
农村互助型社会养老是具有中国特色的社会养老的发展形式,是对农村传统家庭养老的重要补充。它扎根于农村传统的亲邻互助网络,其本质在于经济互助,表现为有组织地发动邻里、志愿等社会力量,充分利用以老年人为主的各类人力资源的闲置时间、资源低成本地相互帮助和服务。社会各界应将其作为重要实施方略,纳入积极应对人口老龄化战略和乡村振兴战略之中。其发展路径可以概括为:以资金互助为基础,以组织动员为抓手,以服务互助为重点,以社区居家养老为主要阵地,创新各类互助养老模式,着力形成稳定多元的资金来源,培育互助队伍,增加互助内容,从无偿到无偿、低偿相结合,探索建立标准规范的服务管理评估制度,机构养老与社区居家养老互联互通,最终尝试建立圈层化、整合化、网络化、制度化的农村互助型社会养老体系。  相似文献   
33.
《Risk analysis》2018,38(1):84-98
The emergence of the complexity characterizing our systems of systems (SoS) requires a reevaluation of the way we model, assess, manage, communicate, and analyze the risk thereto. Current models for risk analysis of emergent complex SoS are insufficient because too often they rely on the same risk functions and models used for single systems. These models commonly fail to incorporate the complexity derived from the networks of interdependencies and interconnectedness (I–I) characterizing SoS. There is a need to reevaluate currently practiced risk analysis to respond to this reality by examining, and thus comprehending, what makes emergent SoS complex. The key to evaluating the risk to SoS lies in understanding the genesis of characterizing I–I of systems manifested through shared states and other essential entities within and among the systems that constitute SoS. The term “essential entities” includes shared decisions, resources, functions, policies, decisionmakers, stakeholders, organizational setups, and others. This undertaking can be accomplished by building on state‐space theory, which is fundamental to systems engineering and process control. This article presents a theoretical and analytical framework for modeling the risk to SoS with two case studies performed with the MITRE Corporation and demonstrates the pivotal contributions made by shared states and other essential entities to modeling and analysis of the risk to complex SoS. A third case study highlights the multifarious representations of SoS, which require harmonizing the risk analysis process currently applied to single systems when applied to complex SoS.  相似文献   
34.
Modern analytical models for anti-monopoly laws are a core element of the application of those laws. Since the Anti-Monopoly Law of the People’s Republic of China was promulgated in 2008, law enforcement and judicial authorities have applied different analytical models, leading to divergent legal and regulatory outcomes as similar cases receive different verdicts. To select a suitable analytical model for China’s Anti-Monopoly Law, we need to consider the possible contribution of both economic analysis and legal formalism and to learn from the mature systems and experience of foreign countries. It is also necessary to take into account such binding constraints as the current composition of China’s anti-monopoly legal system, the ability of implementing agencies and the supply of economic analysis, in order to ensure complementarity between the analytical model chosen and the complexity of economic analysis and between the professionalism of implementing agencies and the cost of compliance for participants in economic activities. In terms of institutional design, the models should provide a considered explanation of the legislative aims of the law’s provisions. It is necessary, therefore, to establish a processing model of behavioral classification that is based on China’s national conditions, applies analytical models using normative comprehensive analysis, makes use of the distribution rule of burden of proof, improves supporting systems related to analytical models and enhances the ability of public authorities to implement the law.  相似文献   
35.
潘澈 《东方论坛》2021,(2):113-122
对于舜之“怨慕”,朱熹作出了不同于孟子的解读。这是基于心学、理学内在逻辑的不同。孟子作为私学之儒,和孔子一样,是主张士君子的阳刚人格的,并且从性向善的人性论出发,协调义与利、公与私的关系,而以君臣父子关系都属对待关系;依此,将舜之“怨慕”解读为舜对父母的既怨又慕。朱熹则作为官学之儒,以所谓“气质之性”协调理学先驱荀子的性向恶论,以二歧化思维把天地之性、天理绝对化,以公去私,视君臣父子关系则为下对上的绝对服从关系;依此解读,舜之“怨”只能是自怨。  相似文献   
36.
Abstract

This paper focuses on the inference of suitable generally non linear functions in stochastic volatility models. In this context, in order to estimate the variance of the proposed estimators, a moving block bootstrap (MBB) approach is suggested and discussed. Under mild assumptions, we show that the MBB procedure is weakly consistent. Moreover, a methodology to choose the optimal length block in the MBB is proposed. Some examples and simulations on the model are also made to show the performance of the proposed procedure.  相似文献   
37.
考虑由新能源汽车租赁企业和政府组成的二级系统,在需求率为随机且与推广努力水平相关的市场环境下,建立了新能源汽车租赁企业和政府之间的博弈模型,探讨了分散决策、集中决策、收益共享与成本共担契约下的最优车队配置和推广努力水平,并对三种情形下的最优决策进行了比较和分析。研究结果表明:在分散决策情况下无法实现系统协调,通过引入成本共担与收益共享组合契约,当契约参数满足一定条件时,该组合契约模型不仅可以实现系统协调而且可以使系统成员达到帕累托改进。最后通过算例分析,验证了模型了可靠性和有效性。  相似文献   
38.
China’s pension reform during the past three decades has allowed a majority of China’s population to be covered by a pension scheme. Of particular note has been the New Rural Pension Scheme (NRPS), a voluntary programme introduced starting in 2009. One goal of our analysis is to assess that pension scheme, using a variety of sources of information including data drawn from recent (2013 and 2015) nationwide China Health and Retirement Longitudinal Surveys (CHARLS). Our analysis involves an exploration of differences between the generosity and structure of the NRPS and other pension schemes currently in place. We also explore the feasibility of reforming the current “quasi-social pension” component of the NRPS by substituting a universal non-contributory social pension pillar. In connection with our assessment of the NRPS, we note the unusually low benefit levels for rural China.  相似文献   
39.
林雪是当代汉语诗歌的重要诗人,她“在心为志,发言为诗”,诗风大气沉郁。她近期的诗歌,情怀与思辨相互倚重、酵化,介入生活与提炼心性同步发力,题材多样,手法多变,情感收放自如,气韵放达从容。她对现实的观照,对时空的架构,对存在的开掘,都呈现出一种新的气象。她自觉地从先期女性主义诗写中觉醒,到如今的清澈中隐显尘世的味蕾,对生活细节和感念触觉的精妙镂刻,以及对世道人心的专注和细致打量。  相似文献   
40.
The debate on strategic spatial planning highlights the limitations of statutory land use planning in weighing up future options for spatial development, particularly in instances of rapid change. This paper draws on this debate in order to analyse planning institutions and practices in Finland. The case in point is the south-eastern border region where interdependencies with Russia, particularly shopping tourism, have created pressures on land use and led to contentious planning processes between regional and central levels of government. It is argued that, in the absence of cross-border spatial co-ordination, there is a need to establish links between regional land use planning and visions of spatial scenarios in the national context.  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