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   1788篇
  免费   45篇
  国内免费   1篇
教育   1409篇
科学研究   113篇
各国文化   22篇
体育   130篇
综合类   1篇
文化理论   13篇
信息传播   146篇
  2023年   9篇
  2022年   14篇
  2021年   21篇
  2020年   35篇
  2019年   57篇
  2018年   86篇
  2017年   75篇
  2016年   80篇
  2015年   41篇
  2014年   50篇
  2013年   430篇
  2012年   41篇
  2011年   55篇
  2010年   29篇
  2009年   41篇
  2008年   46篇
  2007年   33篇
  2006年   41篇
  2005年   27篇
  2004年   33篇
  2003年   21篇
  2002年   29篇
  2001年   24篇
  2000年   43篇
  1999年   19篇
  1998年   14篇
  1997年   18篇
  1996年   17篇
  1995年   17篇
  1994年   22篇
  1993年   13篇
  1992年   17篇
  1991年   21篇
  1990年   19篇
  1989年   19篇
  1988年   15篇
  1987年   8篇
  1986年   11篇
  1985年   12篇
  1984年   15篇
  1983年   17篇
  1982年   16篇
  1981年   16篇
  1980年   7篇
  1979年   9篇
  1978年   12篇
  1977年   7篇
  1976年   13篇
  1972年   7篇
  1968年   7篇
排序方式: 共有1834条查询结果,搜索用时 15 毫秒
1.
Abstract

In an economic climate when colleges can no longer presume that legislators see institutions of higher learning as tacit public goods, institutions around the country are facing budget cuts. This article presents a case study of the experience of a mid-sized public state university and its Library in a budget crisis undergoing a university-wide program prioritization process. The authors review the process of writing three reports on the Library’s value, along with the approach to engaging staff in the process including a retreat. This article raises questions about what every library should consider assessing and provide tools for libraries navigating similar terrain.  相似文献   
2.
3.
4.
This paper responds to a trend of contracting out subjective well-being econometrics to demonstrate social return on investment (SROI) for evidence-based policy-making. We discuss an evolving ecology of ‘external’ research taking place ‘between’ the academy and commercial consultancy. We then contextualise this as waves of research methodologies and consultancy for the cultural sector. The new model of ‘external between’ consultancy research for policy is not only placed between the University and the market, but also facilitates discourse between policy sectors, government, the media and the academy. Specifically, it enables seductive but selective arguments for advocacy that claim authority through academic affiliation, yet are not evaluated for robustness. To critically engage with an emergent form of what Stone calls ‘causal stories’, we replicate a publicly funded externally commissioned SROI model that argues for the value of cultural activities to well-being. We find that the author’s operationalisation of participation and well-being are crucial, yet their representation of the relationship problematic, and their estimates questionable. This case study ‘re-performs’ econometric modelling national-level survey data for the cultural sector to reveal practices that create norms of expertise for policy-making that are not rigorous. We conclude that fluid claims to authority allow experimental econometric models and measures to perform across the cultural economy as if ratified. This new model of advocacy research requires closer academic consideration given the changing research funding structures and recent attention to expertise and the contracting out of public services.  相似文献   
5.
Fewer international students have applied to and enrolled in US institutions, as 40 per cent of US institutions reported a drop in international applications since 2016. Subsequently, US institutions must ensure that their international admissions materials are as equitable and transparent as possible. Expanding previous work, this study examines the readability and translation of international undergraduate admissions materials of 335 four‐year public and non‐profit private US institutions. Results reveal these materials are written near a 14th‐grade reading comprehension level, only 1 per cent of institutions provide web‐embedded translation tools on their websites and 91 per cent of institutions provide English‐only content. Implications for practitioners, policymakers and future research are addressed.  相似文献   
6.
ABSTRACT

Libraries use surveys and other instruments to gather feedback from their users. However, with competition from many other campus entities requesting input, how can survey fatigue be avoided? To gather this feedback, the Social Sciences Reference Desk utilized a short, fun and easy method. Each week for 10 weeks during the fall semester of 2017, the reference assistants wrote a survey question on a whiteboard and provided sticky notes for patrons to write their answers. The survey provided valuable information about patrons’ needs and expectations. It also fostered changes that were easily implemented to improve the delivery of library services.  相似文献   
7.
The design and fabrication of a membrane-integrated microfluidic cell culture device (five layers,≤500 μm total thickness) developed for high resolution microscopy is reported here. The multi-layer device was constructed to enable membrane separated cell culture for tissue mimetic in vitro model applications and pharmacodynamic evaluation studies. The microdevice was developed via a unique combination of low profile fluidic interconnect design, substrate transfer methodology, and wet silane bonding. To demonstrate the unique high resolution imaging capability of this device, we used oil immersion microscopy to image stained nuclei and mitochondria in primary hepatocytes adhered to the incorporated membrane  相似文献   
8.
9.
New important battle-outcome-prediction conditions are developed for combat between two homogeneous military forces modelled by variable-coefficient Lanchester-type equations for area fire. Such conditions are very significant in modern operations research for developing important insights into the dynamics of combat. However, similar differential-equation models do arise in other fields of science and technology such as mathematical ecology and epidemiology, and consequently our new mathematical results may also find application there. These new important “simple approximate” battle-outcome-prediction conditions depend on not only the combat-attrition model but also the battle-termination model, and they are developed for two different types of battle-termination conditions (fixed-force-level-breakpoint battles and fixed-force-ratio-breakpoint battles). They are sufficient (but not necessary) to determine the outcome of battle without having to explicitly compute the force-level trajectories, and a generalization of Lanchester’s famous linear law to variable-coefficient combat is involved in their development. Certain integrability properties of the Lanchester attrition-rate coefficients figure prominently in these results, and an important physical interpretation (relating to logistics considerations) is given for these properties.  相似文献   
10.
The Franklin Institute, Philadelphia, Pennsylvania awarded the 2001 Benjamin Franklin Medal in Life Science to Judah Folkman for his founding of the field of angiogenesis research and demonstration that angiogenesis is a necessary factor in the conversion of abnormal cells to malignant tumors.  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