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   389篇
  免费   26篇
教育   287篇
科学研究   16篇
各国文化   6篇
体育   51篇
综合类   1篇
文化理论   1篇
信息传播   53篇
  2023年   2篇
  2022年   5篇
  2021年   5篇
  2020年   15篇
  2019年   23篇
  2018年   25篇
  2017年   38篇
  2016年   32篇
  2015年   13篇
  2014年   19篇
  2013年   99篇
  2012年   16篇
  2011年   13篇
  2010年   13篇
  2009年   16篇
  2008年   16篇
  2007年   7篇
  2006年   6篇
  2005年   7篇
  2004年   12篇
  2003年   5篇
  2002年   4篇
  2001年   4篇
  2000年   1篇
  1999年   1篇
  1998年   1篇
  1997年   3篇
  1996年   2篇
  1995年   1篇
  1994年   2篇
  1993年   1篇
  1990年   1篇
  1986年   2篇
  1981年   1篇
  1980年   1篇
  1974年   1篇
  1973年   1篇
  1942年   1篇
排序方式: 共有415条查询结果,搜索用时 15 毫秒
391.

Objective:

This Association of Vision Science Librarians revision of the “Standards for Vision Science Libraries” aspires to provide benchmarks to address the needs for the services and resources of modern vision science libraries (academic, medical or hospital, pharmaceutical, and so on), which share a core mission, are varied by type, and are located throughout the world.

Methods:

Through multiple meeting discussions, member surveys, and a collaborative revision process, the standards have been updated for the first time in over a decade.

Results:

While the range of types of libraries supporting vision science services, education, and research is wide, all libraries, regardless of type, share core attributes, which the standards address.

Conclusions:

The current standards can and should be used to help develop new vision science libraries or to expand the growth of existing libraries, as well as to support vision science librarians in their work to better provide services and resources to their respective users.The Association of Vision Science Librarians (AVSL)—whose more than 150 members represent ophthalmology, optometry, and industry libraries throughout the world—has defined standards for its libraries since 1976 13. AVSL recommends that vision science libraries (VSLs) have at least one active member in AVSL. Standards for this very specialized area of library service have evolved owing to the work of librarians who, since 1937, have been developing and refining standards for their libraries 4. The standards reported here reflect the changes that have taken place during the decade and a half since the last edition of these standards were published. Changes include recommended staffing and technology, and the addition of a section addressing online access to information.AVSL convened a task force to first evaluate whether a standards revision was needed. Once it was agreed to do so, the task force guided the process of the revision, which included member surveys and discussions at meetings over the span of two years.The standards are intended to provide qualitative information such as appropriate staffing levels and collection scope, which can be used to evaluate existing vision science libraries or to develop new vision science libraries. In addition, these libraries should reflect the purpose and mission of the institution to which each belongs, and each library should have policies in place that outline the various areas to support the education, research, and patient care information needs of their institutions.  相似文献   
392.
A two‐dimensional, dynamic bioengineering model of the lower limbs was developed in order to estimate muscle and joint forces present during running at 4.5 m s ‐1. Data were collected from four subjects using a force platform and cine film. Individual X‐rays and anthropometric data from the lower limbs were utilized to produce accurate bone models of the subjects’ legs. Electromyographic verification of the model was undertaken while a runner was undergoing treadmill running at 4.5 m s‐1. Results indicate that peak muscle forces of 22 times subject body weight (22 BW) could be present in the quadriceps muscle group and 7 BW in the gastrocnemius. The anterior shin muscles were found to be active for the first 9% of stance phase only, and compressive loads of 33 BW were found in the knee joint. The relationship between these nigh forces in the lower limbs and running related injuries is discussed.  相似文献   
393.
394.
Providing model‐based accounts (explanations and predictions) of water and substances in water moving through environmental systems is an important practice for environmental science literacy and necessary for citizens confronting global and local water quantity and quality issues. In this article we present a learning progression for water in environmental systems for students in elementary through high school grades. We investigated student accounts of water and substances in water moving through atmospheric, surface, and soil/groundwater systems, including human‐engineered components of these systems. Using an iterative process of model design, assessment, and interpretation, we identified four levels of achievement in student reasoning. Levels 1 and 2 force‐dynamic accounts explain movement of water as interactions between natural tendencies of water and countervailing powers. Level 3 incomplete school science accounts put events in order and trace water and substance along multiple pathways that include hidden and invisible components. Only Level 4 qualitative model‐based accounts include driving forces and constraining factors to explain or predict where water and substances in water move in given situations. The majority of high school students on average provide accounts between levels 2 and 3. We discuss the significance of these results for citizen participation in addressing common water issues. We end with suggestions for how the water learning progression can be used to inform changes to curricula, assessment, and instruction to support students in achieving level 4 performance. © 2012 Wiley Periodicals, Inc. J Res Sci Teach 49: 843–868, 2012  相似文献   
395.
396.
Buss KA  Kiel EJ 《Child development》2004,75(6):1761-1773
Research suggests that sadness expressions may be more beneficial to children than other emotions when eliciting support from caregivers. It is unclear, however, when children develop the ability to regulate their displays of distress. The current study addressed this question. Distress facial expressions (e.g., fear, anger, and sadness) were examined in 24-month-old toddlers throughout 4 episodes as well as specifically during looks to their mothers. Consistent with hypotheses and the literature, toddlers expressed sadness more frequently and with more intensity than target emotions only during looks to their mothers. These findings indicate that toddlers as young as 24 months of age are using particular emotional displays to elicit support from the social environment.  相似文献   
397.
There is a growing expectation that schools should systematically collect and analyse data as a point of departure for decisions. However, research shows that teachers themselves are less convinced that they need to base their decisions on data, as they mainly rely on their intuition and experience. This article examines the extent to which teachers use data as a source of information for decisions at classroom level and what motivates them to use these data. We will also look at what impact the teacher’s decision-making style, supportive relationships and the reflective capacity of the school team have on teachers’ motivation for using data. Our research data was collected by means of an online survey of 408 teachers in 52 primary schools in Flanders. The results demonstrate that the quality of teachers’ motivation for using data is a key element in promoting data use in schools. Teachers who feel autonomously motivated will make greater use of data than teachers with a controlled motivation. We found that the use of a rational decision-making style by teachers, supportive relationships within the school and the reflective capacity of the school team all lead to an increase in teachers’ autonomous motivation for using data.  相似文献   
398.
Education has embraced the idea of an ‘asset approach’ to working with families and children, creating a focus on developing collaborative relationships with families by building on what they bring to the table. In this paper we explore what happened when early childhood teachers entered homes to learn from families and identify their Funds of Knowledge. The findings show how issues of power and perception surfaced when teachers attempted to shift their role from that of teacher to learner. In analyzing teachers’ experience before, during, and after ethnographic home visits we saw their general desire to adopt an asset-based mentality. However, the hegemonic structure of schooling, previous experiences, and traditional teachers’ roles shaped their experience with the Funds of Knowledge framework. We end by discussing the implications for teachers and teacher educators who are interested in using home visits to develop an asset approach to their work with families.  相似文献   
399.
Objective. Guided by a social interaction learning model, this study investigated potential risk and protective factors related to fathers’ early parenting behaviors. Design. Parenting behaviors in 726 Norwegian fathers with their 1-year olds (51.7% boys) were assessed by both micro social coding and global ratings from direct observation of structured interactions. Father and child factors were reported by fathers when the child was 6 months and 1 year old. Results. Fathers’ positive involvement was associated with children’s observed sustained attention, and lack of positive involvement was associated with children’s communicative risk and fathers’ lower education. Fathers’ negative reinforcement was associated with children’s developmental difficulties and communicative risk. Positive involvement and negative reinforcement were not correlated and were predicted by different factors, indicating they are separate dimensions of parenting. Conclusion. Multiple predictors relate to different parenting dimensions and point to factors that may enhance father–infant interaction and identify fathers and children who may benefit from early intervention.  相似文献   
400.
This survey study explored gender differences in transition imperatives and opportunities for youth with disabilities (N = 521). Results indicated that males and females differ in terms of the adult outcomes they hope to achieve, transition training opportunities they have received, and their access to teachers and other nonfamilial adults to assist them. Youth and parents who responded to the survey indicated that gender stereotypes continue to exist and that these stereotypes result in lowered expectations for girls. Gender stereotypes were found to vary by ethnicity. Access to health insurance and a good doctor were rated as top priorities for all youth transitioning to adulthood. Implications for educators, psychologists, and counselors are discussed. © 2008 Wiley Periodicals, Inc.  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