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   1128篇
  免费   30篇
  国内免费   14篇
教育   754篇
科学研究   272篇
各国文化   2篇
体育   40篇
综合类   49篇
文化理论   1篇
信息传播   54篇
  2024年   1篇
  2023年   1篇
  2022年   10篇
  2021年   29篇
  2020年   21篇
  2019年   17篇
  2018年   12篇
  2017年   19篇
  2016年   21篇
  2015年   30篇
  2014年   86篇
  2013年   83篇
  2012年   98篇
  2011年   87篇
  2010年   61篇
  2009年   66篇
  2008年   83篇
  2007年   95篇
  2006年   90篇
  2005年   71篇
  2004年   50篇
  2003年   46篇
  2002年   36篇
  2001年   25篇
  2000年   11篇
  1999年   6篇
  1998年   6篇
  1997年   3篇
  1995年   1篇
  1992年   1篇
  1991年   2篇
  1986年   2篇
  1984年   1篇
  1982年   1篇
排序方式: 共有1172条查询结果,搜索用时 15 毫秒
1.
入世后,我国中小体育用品业面临着国外知名品牌企业的竞争威胁,引起了我国业内人士的高度重视;产业集聚战略已成为提升区域竞争力的重要措施之一.以晋江运动鞋行业为例证,分析了我国中小体育用品生产企业产业集群集聚竞争优势和形成条件.  相似文献   
2.
本文从用户利用的角度,以广州"教育E时代"主题资源库检索系统为例,通过评价指标体系构建,抽样问卷调查和重点用户访谈等方式,全面评价教学资源库各项指标性能。针对用户使用过程中存在的种种问题,相应提出了增加本地资源、优化分类体系和数据存储格式、优化检索窗口设计、简化检索界面、增强系统交互性等策略。  相似文献   
3.
Oh and LaRose (2016) contended that problem severity and channel publicness shape support seekers’ goals, time spent composing messages, and the sophistication of those messages. The current study seeks to replicate and extend Oh and LaRose’s study to produce a more accurate understanding of the factors that influence the sophistication of support-seeking messages online. Support seekers’ goals varied according to the severity of a stressor and the publicness of a channel, and the amount of time people spent composing a message influenced its sophistication. We extend the original study by examining associations that were not initially tested. Time spent composing messages mediated the influence of problem severity on the quality of people’s messages, and this effect was moderated by channel publicness.  相似文献   
4.
This paper reports on a case study involving a strategic and innovative approach to creation of an in-house multifaceted digital engineering platform (the DEP) in overcoming a number of organisational problems at a multinational engineering company. The DEP was to be used strategically for simplifying the operational complexity and to create and appropriate new work-related mind-set and new organisational discourse to achieve homogenous working across the organisation, which is a huge challenge. The need for this system emerged from the need to resolve many organisational services related problems that carried phenomenal amount of processes, health and safety risks and to regulate, and, control the running of engineering project. Research data were collected using a longitudinal case study approach over a period of six months. In order to make sense of how the DEP helped the organisation, the study used certain elements of Extended Structuration Theory as a lens to assess the case study. This research discovered that the DEP succeeded in creating and appropriating work-related mind-set and organisational discourse. It also had real influence on working processes and employees at all levels while encouraging transparency, responsiveness, agility and accountability. It continues to help the organisation to govern, manage and maintain good standard of service but many barriers still remain.  相似文献   
5.
In two studies, we investigated whether a recently developed psychometric instrument can differentiate intrinsic, extraneous, and germane cognitive load. Study I revealed a similar three-factor solution for language learning (n = 108) and a statistics lecture (n = 174), and statistics exam scores correlated negatively with the factors assumed to represent intrinsic and extraneous cognitive load during the lecture. In Study II, university freshmen who studied applications of Bayes' theorem in example–example (n = 18) or example–problem (n = 18) condition demonstrated better posttest performance than their peers who studied the applications in problem–example (n = 18) or problem–problem (n = 20) condition, and a slightly modified version of the aforementioned psychometric instrument could help researchers to differentiate intrinsic and extraneous cognitive load. The findings provide support for a recent reconceptualization of germane cognitive load as referring to the actual working memory resources devoted to dealing with intrinsic cognitive load.  相似文献   
6.
Abundant evidence has demonstrated an association between peer victimization and adolescent problem behaviors. However, there is a large gap in knowledge about the potential mediators that associate peer victimization with problem behaviors and the potential moderators that exacerbate or buffer this association. The current study examined whether deviant peer affiliation mediated the association between peer victimization and problem behaviors and whether the direct and indirect associations were moderated by impulsivity. A sample of 1401 adolescents (50.1% boys, 11–14 years old) completed anonymous questionnaires regarding peer victimization, impulsivity, deviant peer affiliation, and problem behaviors. Gender, age and socioeconomic status (SES) were controlled for in the analyses. Structural equation models showed that peer victimization was significantly associated with more problem behaviors, and this association was mediated by deviant peer affiliation. Impulsivity moderated both the direct association (peer victimization  problem behaviors) and the second stage of the indirect path (deviant peer affiliation  problem behaviors). Specifically, these associations were especially stronger for adolescents with higher impulsivity. Identifying the processes by which peer victimization is associated with adolescent problem behaviors has important implications for an integrative framework of theory and prevention.  相似文献   
7.
试析入世过渡期结束后国有专业外贸公司的发展问题   总被引:3,自引:0,他引:3  
我国入世过渡期结束、外贸经营权放开以后,以前为国有专业外贸公司提供货源的厂家获得外贸出口权,国有专业外贸公司面临失去货源和客户的风险。为此,90年代后半期以后不少专业外贸公司纷纷向实业化转型。该文根据有关经济学理论对此问题进行了探讨,并对今后国有专业外贸公司的发展问题提出了自己的建议。  相似文献   
8.
申论考试是我国公开、公正、公平选拔公务员制度的一种创新,为造就一支高素质、专业化的国家公务员队伍提供了一个规范化的竞争平台。中沦考试的主要特点是“试卷编排的程序性”、“答题过程的程序性”、“能力测试的综合性”、“考试的限制性”。申论考试是一种全新的考试,应掌握一定的阅读方法,紧扣方案的针对性,做到看清“虚拟身份”,明确文体要求,突出可行性。论述写作力争做到拟题脱俗巧点睛,以小见大高立意,说理论道重分析,言活语实可触摸,有的放矢关痛痒.辩证论述防片面.  相似文献   
9.
利用欧氏空间向量内积的性质,对于文[1]中Kelly问题的Wolliam Kruskal猜想证明了m(d,d r)≥√d 3r,并给出了m(2,5)与m(2,6)的最小值.  相似文献   
10.
在许多企业生产经营管理工作中。经常面临着给机械分派工作地点等问题,由于这类问题相关的效率统计资料是比较容易获得的,因此,可以应用指派问题解决机械分配的有关问题。通过例子介绍了有部分限制的匈牙利解法在机械分配中的运用。  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