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   1066篇
  免费   165篇
教育   234篇
科学研究   48篇
体育   19篇
综合类   1篇
文化理论   5篇
信息传播   924篇
  2023年   5篇
  2022年   9篇
  2021年   9篇
  2020年   8篇
  2019年   13篇
  2018年   25篇
  2017年   14篇
  2016年   72篇
  2015年   79篇
  2014年   22篇
  2013年   64篇
  2012年   17篇
  2011年   23篇
  2010年   8篇
  2009年   6篇
  2008年   9篇
  2007年   79篇
  2006年   35篇
  2005年   8篇
  2004年   61篇
  2003年   3篇
  2002年   2篇
  2001年   69篇
  1999年   42篇
  1998年   85篇
  1997年   64篇
  1996年   71篇
  1995年   54篇
  1994年   79篇
  1993年   86篇
  1992年   46篇
  1991年   2篇
  1990年   30篇
  1988年   2篇
  1987年   3篇
  1986年   1篇
  1985年   3篇
  1984年   3篇
  1983年   1篇
  1981年   1篇
  1980年   1篇
  1979年   1篇
  1977年   3篇
  1976年   2篇
  1975年   1篇
  1971年   2篇
  1970年   4篇
  1969年   1篇
  1961年   1篇
  1957年   2篇
排序方式: 共有1231条查询结果,搜索用时 15 毫秒
11.
随着建筑电气与智能化专业开设院校的增加,该专业已经成为新兴的热门专业,实验室的建设也受到了越来越多的关注.通过对一些高校实验室建设现状的调查,总结在选择实验室建设方案时应考虑的主要问题,为相关实验室的建设提供一定的参考.  相似文献   
12.
引言背景资料在殖民统治时期,教育制度在性质上既是分层性的,也是隔离性的,肯尼亚人同其他非洲人一样只被允许接受关于职业和农业教育,其目的是为殖民者提供廉价的体力劳动者(Sorobea,1992;Sheffield,1971)。这在殖民时期的各种教育报告中被反复提及,包括:弗雷泽,1902年;菲尔普斯斯托克斯,1924年;毕彻,1949年。而学历教育则是  相似文献   
13.

Introduction

Hemolysis can occur during sample collection, handling and transport. It is more frequent when the non-laboratory staff performs sampling. The aim of this study was to assess nurses’ knowledge on the causes of hemolysis and consequential impact on the laboratory tests results. Additionally, the differences in knowledge, related to work experience, professional degree and previous education about hemolysis were explored.

Materials and methods

An anonymus survey, containing 11 questions on demographics, causes of hemolysis, its impact on biochemical parameters and nurses’ attitude towards additional education in preanalytics, was conducted in four Croatian hospitals. The answers were compared by Chi-squared and Fischer exact test.

Results

In total, 562 survey results were collected. Majority of nurses declared familiarity with the term “hemolysis” (99.6%). There were 77% of correct answers regarding questions about the causes of hemolysis, but only 50% when it comes to questions about interference in biochemical tests. The percentage of correct answers about causes was significantly lower (P = 0.029) among more experienced nurses, and higher (P = 0.027) in those with higher professional degree, while influence of previous education was not significant. Also, higher percentage of correct answers about interferences was encountered in nurses with longer work experience (P = 0.039). More than 70% of nurses declared that additional education about preanalytical factors would be beneficial.

Conclusion

Croatian nurses are familiar with the definition of hemolysis, but a lack of knowledge about causes and influence on laboratory test results is evident. Nurses are eager to improve their knowledge in this field of preanalytical phase.Key words: hemolysis, nurses, survey, preanalytical phase  相似文献   
14.
The paper seeks to understand the trajectories of students who defer entry to university. The study was conducted in Lithuania, a former Soviet Union republic. The phenomenon of a ‘gap year’ is usually associated with young people, who decide not to enter higher education schools immediately after receiving secondary education, instead they choose to spend a year volunteering, working or engaging in other activities. This article analyses the choice of taking a gap year from the perspective of rational choice theory, complemented by human development theory, which was developed by R. Inglehart and his colleagues. The latter theory allows discovering relation between the spreading of the gap year phenomenon in developed European countries and the emergence as well as development of post-materialist values from the macro-level perspective. The theoretical analysis is based on semi-structured interview data collected in Lithuania.  相似文献   
15.
16.
Students with autism may struggle to develop the academic skills necessary for success in school and beyond. Understanding and improving academic skills performance requires appropriate measurement approaches. One such option that has been minimally studied with students with autism is curriculum-based measurement (CBM). Coinciding with the need to study different approaches to academic skills measurement for students with autism was the global pandemic which forced a shift to remote service delivery with little warning. While some autistic students struggled with this shift, others thrived, raising questions about how to further support students with autism in virtual formats. The purpose of this study was to examine the feasibility of using remotely administered CBM for autistic students by studying both the practicality and acceptability of this approach. Five students with autism (Grades 2–5) participated in this pilot study, completing reading, math, and writing CBMs at three time points. Student behavior and assessor fidelity were collected to examine practicality; assessor ratings of usability provided insight regarding the acceptability of the approach. Results indicated that remotely administered CBM is feasible for some students with autism: all participants completed the study tasks with minimal behavioral difficulties, and assessor ratings of acceptability were high.  相似文献   
17.
The initial time difference practical stability in terms of two measures has been investigated for nonlinear fractional differential equations in Caputo's sense and these properties have been unified with Lyapunov-like functions to establish a comparison result.  相似文献   
18.
Understanding the main determinants of Internet banking adoption is important for banks and users; our understanding of the role of users’ perceived risk in Internet banking adoption is limited. In response, we develop a conceptual model that combines unified theory of acceptance and use of technology (UTAUT) with perceived risk to explain behaviour intention and usage behaviour of Internet banking. To test the conceptual model we collected data from Portugal (249 valid cases). Our results support some relationships of UTAUT, such as performance expectancy, effort expectancy, and social influence, and also the role of risk as a stronger predictor of intention. To explain usage behaviour of Internet banking the most important factor is behavioural intention to use Internet banking.  相似文献   
19.
简述陆地卫星多光谱扫描(MSS)影象的特点,着重介绍陆地卫星多光谱扫描影象适用于中、小比例尺的土地资源凋查  相似文献   
20.
The study examined the predictive value of adolescents’ personality trait ratings by different groups of informants in explaining academic achievement [grade point average (GPA)] while controlling for students’ sex and their mothers’ education. The Inventory of Child/Adolescent Individual Differences was employed as a measure of students’ personality traits at the end of elementary schooling (mean age = 14.7 years) and two years later when the participants attended secondary schools. The trait ratings were obtained through self‐, maternal and peer reports at both measurement occasions. They explained substantial portions of unique variance in the students’ GPA concurrently, and over time. Ratings by each of the three groups of informants had an incremental validity over one another in predicting school grades. Among personality variables, conscientiousness and low extraversion were consistently predictive of GPA.  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