全文获取类型
收费全文 | 5901篇 |
免费 | 249篇 |
国内免费 | 80篇 |
专业分类
管理学 | 368篇 |
劳动科学 | 28篇 |
民族学 | 207篇 |
人才学 | 2篇 |
人口学 | 145篇 |
丛书文集 | 1436篇 |
理论方法论 | 259篇 |
综合类 | 2949篇 |
社会学 | 357篇 |
统计学 | 479篇 |
出版年
2024年 | 5篇 |
2023年 | 20篇 |
2022年 | 69篇 |
2021年 | 79篇 |
2020年 | 77篇 |
2019年 | 74篇 |
2018年 | 94篇 |
2017年 | 149篇 |
2016年 | 106篇 |
2015年 | 156篇 |
2014年 | 229篇 |
2013年 | 340篇 |
2012年 | 361篇 |
2011年 | 394篇 |
2010年 | 469篇 |
2009年 | 444篇 |
2008年 | 395篇 |
2007年 | 412篇 |
2006年 | 431篇 |
2005年 | 393篇 |
2004年 | 227篇 |
2003年 | 175篇 |
2002年 | 259篇 |
2001年 | 207篇 |
2000年 | 138篇 |
1999年 | 99篇 |
1998年 | 65篇 |
1997年 | 67篇 |
1996年 | 57篇 |
1995年 | 63篇 |
1994年 | 46篇 |
1993年 | 40篇 |
1992年 | 24篇 |
1991年 | 18篇 |
1990年 | 13篇 |
1989年 | 6篇 |
1988年 | 8篇 |
1987年 | 3篇 |
1986年 | 4篇 |
1985年 | 1篇 |
1984年 | 4篇 |
1983年 | 2篇 |
1982年 | 1篇 |
1981年 | 1篇 |
1980年 | 3篇 |
1977年 | 1篇 |
1974年 | 1篇 |
排序方式: 共有6230条查询结果,搜索用时 31 毫秒
101.
目前,吉林省手风琴音乐的创作现状并不乐观,进行手风琴音乐创作的老艺人们大都年逾古稀,很多都已离世,只能从老艺人留下的历史资料或艺人们的口述中探寻当年吉林省手风琴音乐创作情况的蛛丝马迹.艺人们从事手风琴音乐创作的出发点除教学需要和个人兴趣之外,重要的一点是传承民族文化.要改善吉林省手风琴音乐创作的现状,一是要思考手风琴表演形式的创新,二是音乐创作素材的挖掘与思考. 相似文献
102.
陈星 《北京联合大学学报(人文社会科学版)》2012,(3):87-92
随着两岸关系和平发展的持续推进,这项战略已经产生了强大的溢出效应。影响所及,两岸关系结构、台湾民众对两岸关系的认知结构以及台湾岛内话语结构等都发生了根本性变化,这种局面对岛内政党政治的基本生态和未来发展趋势产生了较大影响,两个主要政党都针对环境的变化进行了一定的调整,以求适应台海局势的结构性变化,谋求未来更多的发展空间。 相似文献
103.
建立和完善对青少年进行公民道德教育的机制是美国教育的特色之一。长期以来,美国在对青少年进行公民道德教育的过程中,形成了特有的人本化、个性化的教育理念,多样性、灵活性的教育方法,渗透性、社会性的教育途径,充分发挥了政治性、阶级性的教育功能,有着一整套独特的理论与实践体系,对青少年公民道德素质培养提高发挥了重要作用。通过对美国青少年进行公民道德教育的内容和运行机制的分析审视,借鉴其成功的经验和做法,可以提高我国青少年公民道德教育的实效性。 相似文献
104.
Nonparametric models with jump points have been considered by many researchers. However, most existing methods based on least squares or likelihood are sensitive when there are outliers or the error distribution is heavy tailed. In this article, a local piecewise-modal method is proposed to estimate the regression function with jump points in nonparametric models, and a piecewise-modal EM algorithm is introduced to estimate the proposed estimator. Under some regular conditions, the large-sample theory is established for the proposed estimators. Several simulations are presented to evaluate the performances of the proposed method, which shows that the proposed estimator is more efficient than the local piecewise-polynomial regression estimator in the presence of outliers or heavy tail error distribution. What is more, the proposed procedure is asymptotically equivalent to the local piecewise-polynomial regression estimator under the assumption that the error distribution is a Gaussian distribution. The proposed method is further illustrated via the sea-level pressures. 相似文献
105.
This work investigates an optimal financing and dividend problem for an insurer whose surplus process is modulated by an observable continuous-time and finite-state Markov chain. We assume that the insurer should never go bankrupt by issuing new equity. The goal of the insurer is to maximize the expected present value of the dividends payout minus the discounted cost of equity issuance. We obtain the optimal policies and explicit expressions for the value functions when the risk reserve process is modeled by both upward jump model and its diffusion approximation. Numerical illustrations of the sensitivities of the model parameters are provided. 相似文献
106.
利益相关者分析法是分析复杂管理问题的重要方法,广泛应用于企业管理、项目管理及公共政策领域。随着北京市非首都核心功能的疏解思路的提出,作为低端产业代表的动物园批发市场的外迁势在必行。运用"重要性-影响力"利益相关者分析框架,对动批搬迁政策中涉及的利益相关者进行界定,分别分析其利益诉求并进行合理划分,依据各利益相关者对政策的重要性程度和影响力大小以及各相关者之间的利益冲突分别制定解决对策,同时将各种外部阻力纳入考虑范围,为北京市动物园批发市场搬迁提出可行路径,以期为其他类似公共政策制定问题提供参考。 相似文献
107.
Public investment project (PIP) plays an important role in the China economy. In order to improve the project management performance of public projects, the government is searching for a scientific system to build a construction management supervision mode. This paper introduces the policy background and connotation of Agent Construction System (ACS). As a public investment construction management model, ACS, is gradually being incorporated into the legal framework, it is necessary to improve the construction agent supervision mechanism. This article analyzes the supervision mechanism of construction agent quality management under the principle of two-stage agent mode and establishes an agent quality self-control system and a government co-supervision system. These systems take the contract management as the core and the project quality objective as the guidance. These systems also consist of a two-dimensional framework of vertical self-control and horizontal supervision, which form a quality supervision mechanism. Based on Rough Set theory, the article proposes the idea of building an agent quality self-control and government co-supervision model, and illustrates it with a flow chart for building the model, which paves the way of quantitative research for the future. 相似文献
108.
Experience ratemaking plays a crucial role in general insurance in determining future premiums of individuals in a portfolio by assessing observed claims from the whole portfolio. This paper investigates this problem in which claims can be modeled by certain parametric family of distributions. The Dirichlet process mixtures are employed to model the distributions of the parameters so as to make two advantages: to produce exact Bayesian experience premiums for a class of premium principles generated from generic error functions and, at the same time, provide robust and flexible ways to avoid possible bias caused by traditionally used priors such as non informative priors or conjugate priors. In this paper, the Bayesian experience ratemaking under Dirichlet process mixture models are investigated and due to the lack of analytical forms of the conditional expectations of the quantities concerned, the Gibbs sampling schemes are designed for the purpose of approximations. 相似文献
109.
Social Indicators Research - China has seen an unprecedented increase in rural-to-urban migrants in the last three decades, and the extension of welfare programmes to these migrants has been a... 相似文献
110.
2010年底以来,中东地区多国发生了政权更迭,阿尔及利亚一度爆发群众游行示威,但目前阿尔及利亚政局基本稳定,原因可归纳为以下四个方面:一是阿尔及利亚独立以来的长期动荡释放了民众的不满;二是布特弗利卡执政联盟仍具有较强的政治实力;三是国内的两个主要反对派因其各自的缺陷,难以获得大多数民众的支持;四是现政权与美国保持了较好的关系。然而,由于目前中东地区的局势尚在发展中,随着新因素的加入,阿尔及利亚的政局仍存在变数。 相似文献