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   2518篇
  免费   29篇
  国内免费   51篇
教育   1805篇
科学研究   351篇
各国文化   1篇
体育   169篇
综合类   168篇
文化理论   6篇
信息传播   98篇
  2023年   11篇
  2022年   33篇
  2021年   51篇
  2020年   66篇
  2019年   51篇
  2018年   32篇
  2017年   18篇
  2016年   45篇
  2015年   70篇
  2014年   177篇
  2013年   172篇
  2012年   206篇
  2011年   206篇
  2010年   139篇
  2009年   131篇
  2008年   158篇
  2007年   172篇
  2006年   167篇
  2005年   142篇
  2004年   127篇
  2003年   118篇
  2002年   78篇
  2001年   90篇
  2000年   41篇
  1999年   30篇
  1998年   14篇
  1997年   16篇
  1996年   9篇
  1995年   6篇
  1994年   9篇
  1993年   1篇
  1992年   5篇
  1991年   2篇
  1985年   4篇
  1982年   1篇
排序方式: 共有2598条查询结果,搜索用时 203 毫秒
941.
以某电声元件公司电镀废水处理的工程设计为实例,通过分析废水来源及成分,确定工艺流程,运用分质、分类进行物化和生化的方法处理,并运用反渗透(RO)膜系统作为主要的控制装置实现废水回用处理.运行结果表明,该工艺切实可行,使种类复杂的电镀废水处理后能达标排放和回用.  相似文献   
942.
马克思主义理论的整体性从根本上说是一种整体性的思维方式,它强调理论始终要面对现实,并以人类实践为中介,使理论成为现实本身的构成要素,从而打破主客对立的思维方式所造成的两者之间的二元分立。然而这一具有变革意义的整体性思维方式在苏联勃列日涅夫时期马克思主义理论教育中却被一种“超越阶段”发展的思维所遮蔽,当时马克思主义理论教育的主旨是论证和宣扬勃列日涅夫提出的“发达社会主义”的理论。它企图用人们对理论预设出的“美好现实”的接受和憧憬代替对现实生活中矛盾的认知和解决,这种回避矛盾、美化现实的做法造成了理论和现实的颠倒错位,而马克思主义理论的整体性思维方式所实现的理论和现实的统一就被重新“遮蔽”了起来。  相似文献   
943.
Abstract

Despite the overwhelming focus on the overall average treatment effect in the methodological and statistical literature, in many cases the efficacy of an educational program or intervention might vary based on unit background characteristics. The identification of subgroups for which an educational intervention is particularly effective or, on the other hand, has no effect or is possibly harmful, may have important practical implications, especially in terms of allocation of resources. We propose a five-step approach using propensity score matching and regression trees to identify subgroups with heterogeneous treatment effects in observational studies. Results of two Monte Carlo simulation studies demonstrate that the proposed approach can accurately identify heterogeneous subgroups while maintaining Type I error rate. In a case study with Early Childhood Longitudinal Study-Kindergarten cohort data, we find that the effect of exposure to special education services on fifth-grade mathematics achievement varies based on kindergarten mathematics achievement and student gender.  相似文献   
944.
In the general population, alcohol use disorders and psychiatric disorders co-occur. Despite ample evidence of the adverse effects of alcohol use on treatment outcomes, these relationships have not been examined among college students presenting at counseling centers. The purpose of this study was to assess the prevalence of hazardous drinking among students receiving counseling at a university counseling center and to examine relationships between alcohol use, symptomatology, and treatment utilization. Participants were 214 students who had terminated therapy within a 3-year period. Intake assessments of alcohol use, anxiety, depression, and perceived stress were harvested from client files. Analyses indicated that 33% of the sample screened positive for hazardous alcohol use. Findings provided preliminary evidence that hazardous drinking is negatively related to both mental health and treatment utilization in university clinics. In light of this association, coupled with high base rates of risky alcohol use among college students, university counseling centers might consider implementing screening and brief intervention for hazardous drinking.  相似文献   
945.
ABSTRACT

Researchers have inconsistently found differences between student-athletes and nonathletes regarding levels of stigma and attitudes toward counseling. One limitation of previous comparison studies is that they do not control for factors known to influence attitudes and stigma, such as gender and previous treatment history. Therefore, the purpose of this study was to examine differences in stigma and attitudes toward counseling between a sample of student-athletes and nonathletes while controlling for these variables. In this brief report (N = 902), we used multivariate analysis of covariance (MANCOVA) to analyze differences between the groups. After controlling for gender and previous therapy experience, there were no differences between the groups on stigma or attitudes. The results of this study have implications for future outreach and intervention with student-athlete populations.  相似文献   
946.
Abstract

This study compared the delivery of psychological services at a university counseling center after an interval of almost 40 years in a partial replication of an earlier study at the same center. The results indicate that the changes that have occurred in service delivery reflect more the transitions in the culture of the university than trends in mental health treatment.  相似文献   
947.
Chapter 11.     
Abstract

This chapter presents answers to the twenty questions asked at the beginning of this volume, articulates a number of generally poor current practices of pharmacotherapy, makes suggestions for improvement in treatments combining medication and psychotherapy, and proposes important research at colleges and universities to gain understanding of use and misuse of psychotropic medication. We suggest that institutions of higher learning are primary places to reform and improve mental health services and are among the best proponents of community mental health theory, practice and research.  相似文献   
948.
传统中国,诚信乃进德修业之本,立人立政之道。宋明理学作为儒学的复兴,以儒家经学为基础,兼收佛、道思想,对诚信极为重视。周敦颐、“二程”、朱熹等理学家不仅为“诚”的内涵作了哲学思辨的演绎,还把“诚”作为维护“天理”的精神、元点加以阐发,形成了一套比较完整的理论体系,实现了儒家诚信观的哲理化。  相似文献   
949.
马克思主义基本原理是基础,马克思主义发展史是前提,马克思主义经典著作是文本依据,马克思主义方法论是保障,四者内在统一于马克思主义整体性。以史、论、著和方法“四位一体”的全新视角来开展马克思主义整体性研究,无疑具有重大理论意义和现实意义,同时也是对马克思的最好纪念。  相似文献   
950.
非点源污染主要集中在农村和矿区,城市也有分布,受自然和人为两大因素影响。防治问题主要表现在资金不足、技术落后、重视不够、责任不明确、污染原因多样等方面。研究提出将非点源污染按污染源、污染范围不同划分为不同类型的污染,进行分类防治与管理,并对国内外非点源污染研究进展进行了阐述。以鄱阳湖为例,阐述利用GIS技术建立非点源污染信息数据库,对种植业、养殖业非点源污染提出不同的防治措施。针对鄱阳湖水体富营养化开发出一套低成本的循环利用新方式,为营养元素引起的非点源污染防治提供了科学依据。  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