全文获取类型
收费全文 | 825篇 |
免费 | 13篇 |
国内免费 | 11篇 |
专业分类
教育 | 579篇 |
科学研究 | 109篇 |
各国文化 | 9篇 |
体育 | 51篇 |
综合类 | 31篇 |
文化理论 | 5篇 |
信息传播 | 65篇 |
出版年
2024年 | 1篇 |
2023年 | 6篇 |
2022年 | 6篇 |
2021年 | 16篇 |
2020年 | 19篇 |
2019年 | 10篇 |
2018年 | 25篇 |
2017年 | 29篇 |
2016年 | 31篇 |
2015年 | 33篇 |
2014年 | 46篇 |
2013年 | 92篇 |
2012年 | 52篇 |
2011年 | 46篇 |
2010年 | 46篇 |
2009年 | 48篇 |
2008年 | 38篇 |
2007年 | 45篇 |
2006年 | 34篇 |
2005年 | 29篇 |
2004年 | 28篇 |
2003年 | 21篇 |
2002年 | 15篇 |
2001年 | 13篇 |
2000年 | 12篇 |
1999年 | 17篇 |
1998年 | 7篇 |
1997年 | 15篇 |
1996年 | 15篇 |
1995年 | 7篇 |
1994年 | 6篇 |
1993年 | 4篇 |
1992年 | 4篇 |
1991年 | 3篇 |
1990年 | 5篇 |
1989年 | 1篇 |
1988年 | 3篇 |
1987年 | 1篇 |
1986年 | 2篇 |
1985年 | 5篇 |
1984年 | 3篇 |
1983年 | 2篇 |
1980年 | 1篇 |
1978年 | 3篇 |
1977年 | 1篇 |
1975年 | 1篇 |
1973年 | 1篇 |
1968年 | 1篇 |
排序方式: 共有849条查询结果,搜索用时 8 毫秒
621.
Mikulas Pstross Trudy Corrigan Richard C. Knopf HeeKyung Sung Craig A. Talmage Carmel Conroy Cathy Fowley 《Innovative Higher Education》2017,42(2):157-171
This article focuses on the role of universities in the promotion of intergenerational learning and the facilitation of reciprocal sharing of expertise among learners of all ages. The principles of the Age Friendly University are used as a particular lens for interpreting two university programs, one in the United States and one in Ireland. Though different in operational implementation, core commonalities emerged within the nature of benefits to younger learners, older learners, the university, and the community. A review of these benefits illustrates how universities can provide opportunities for older and younger learners to co-create experiences and mutually enrich each other’s lives. 相似文献
622.
Aiming at the time redundancy in the flat panel display (FPD) imaging process, the paper studied some problems for FPD gray
scale controlling based on the fractal theory, dissertates the construction of the space-time mapping topology architecture,
the proposition of optimal scanning structure for FPD’s gray imaging, and the creation of the fractal theoretic model. Then
the logic implementation and system application are presented based on the fractal model of the optimal scan architecture,
and the application results achieved target of eliminating time redundancy and increasing the scanning availability. The novel
control mode that the fractal scanning IP core described with Verilog language embedded in the FPGA hardware frame can efficiently
increase the imaging gray scales and quality in the FPDs scanning controller and speed up the frame frequency of display system. 相似文献
623.
Cathy Kaplun Jennifer Knight Rebekah Grace Sue Dockett Bob Perry Elizabeth Comino 《Educational studies》2016,42(1):54-71
The Gudaga Goes to School Study described the transition to school and early education experiences of 117 urban Aboriginal children and their families. This paper outlines the methods and design of the study. A life course approach, employing multidimensional and multi-theoretical frameworks was used to capture the complexity of issues surrounding the transition and early school experiences with multi-methods used to collect data from children, parents and teachers. Quantitative data included questionnaires, checklists and educational assessments to track children’s academic progress, school attendance, and social/emotional/behavioural development. Qualitative data consisted of semi-structured interviews and focus groups to gain the perspective of stakeholders. Children also participated using photography and drawing mediums. The community controlled study was conceived, designed and conducted in close consultation with the local Aboriginal community. 相似文献
624.
We present a Monte Carlo (MC) method to simulate the scattering for medium within randomly distributed particles, discuss the convergence of this method by varying the size parameter ka. volume parameter η and calculation parameter Ni, then compare this method with the classical iteration method with the same parameters. The calculation results showed that this method has good convergence and accords with the iteration method while consuming less CPU time. At the end of this paper, this method is used to discuss the visual light scatter in the c-Si/α-Si films. 相似文献
625.
龙泉廊桥文化资源的保护和开发措施 总被引:1,自引:1,他引:0
全文介绍了浙江省龙泉市廊桥资源的基本分布情况,通过与邻省邻县、市廊桥保护和开发经验的类比分析,提出了龙泉廊桥资源保护和开发的系列具体措施。 相似文献
626.
翁黎清 《福建工程学院学报》2008,6(1):46-48
提出了一种映射变换方法:在分析传统拉深件毛坯尺寸计算方法的基础上.建立异型盒形件的毛坯近似展开的计算模型.利用微分几何中的诱导映射理论求得非可展曲面到平面城内的变换关系.分析该变换关系的简化算法,以一换挡板拉深件为实例验证了该算法的有效性.结果表明,该算法与传统毛坯计算方法相结合,可以获得符合生产的毛坯尺寸和形状,对异型盒形件的毛坯展开计算具有普适意义. 相似文献
627.
工业建设一直以来都是我国经济社会发展的重要着力点和方向之一,尤其是近年来随着经济的快速发展以及科学技术的不断创新和发展,我国的工科发展也在不断改进,并且在这种新的发展背景下,我国提出了新的工业发展理念,形成新的工科发展背景.在这种背景下,我国的应用型本科院校的创新创业发展也必须与时俱进,不断进行新的改变和发展.因此在新工科建设背景下对应用型本科院校创新创业教育进行探索,主要内容包括解释新工科与应用型本科创新创业教育、新工科背景下应用型本科院校创业创新教育存在的困境以及改进的措施. 相似文献
628.
近年来,国家策应世界百年未有之大变局,随着推进新科技、新基建及“新工科”迅速兴起,促使教育学科因“工”之变引发教育学体系变革。因此,笔者分析了“新工科”对小学尤其低年级阶段儿童课程的影响和变革趋向,探讨了新时代儿童课程发展新理念以及主要行动策略。 相似文献
629.
信用体系是市场经济存在的基石。市场经济中包括政府、企业、个人三大信用为主体建立的三个基础信用体系,而道德、产权、法律是社会信用制度的三个不同层面。我国在发展市场经济过程中不仅存在信用风险,而且存在信用障碍,所以要构建适应市场经济发展的信用体系。 相似文献
630.
Chia Weng Boon Chee Wei Neo David Chew Chiat Ng Victor Chee Wee Ong 《浙江大学学报(A卷英文版)》2018,19(4):255-265
The design of rock support for a typical horseshoe shaped tunnel with considerations of it being excavated into a twin arch tunnel was studied using the distinct element method (DEM). Two different competent rock covers, i.e. 4 m and 7.5 m above the tunnel crown, were analysed. The results are relevant to the granitic geological unit in Singapore which has a weathering profile with rockhead found at some locations to be only 20–35 m below ground level and undulating, leaving limited rock cover for some sections along tunnels of similar depth. The verification of the adequacy of competent rock cover is important to ensure that the choice of ground support is suitable, particularly when the tunnel is excavated using the drill-and-blast method. In the opening geometry analysed in this study, a side drift is excavated adjacent to the first tunnel to create a twin arch opening. This creates a pillar between the openings during the intermediate construction stage. The influence of excavating the side drift on the support of the first opening was studied. We found that the bolt forces in the pillar approximately doubled during the excavation of the side drift, which may have been due to the rock joint inclinations and adopted strength parameters. This paper shows how DEM analyses may be used to complement conventional empirical rock mass classifications to design rock supports. Limitations of the pressure relaxation approach to model 3D effects in 2D are acknowledged. 相似文献