全文获取类型
收费全文 | 3798篇 |
免费 | 46篇 |
国内免费 | 6篇 |
专业分类
教育 | 2414篇 |
科学研究 | 512篇 |
各国文化 | 19篇 |
体育 | 278篇 |
综合类 | 8篇 |
文化理论 | 43篇 |
信息传播 | 576篇 |
出版年
2022年 | 23篇 |
2021年 | 27篇 |
2020年 | 51篇 |
2019年 | 69篇 |
2018年 | 134篇 |
2017年 | 171篇 |
2016年 | 155篇 |
2015年 | 102篇 |
2014年 | 111篇 |
2013年 | 578篇 |
2012年 | 127篇 |
2011年 | 147篇 |
2010年 | 122篇 |
2009年 | 90篇 |
2008年 | 82篇 |
2007年 | 117篇 |
2006年 | 62篇 |
2005年 | 80篇 |
2004年 | 67篇 |
2003年 | 61篇 |
2002年 | 55篇 |
2001年 | 90篇 |
2000年 | 80篇 |
1999年 | 67篇 |
1998年 | 58篇 |
1997年 | 47篇 |
1996年 | 54篇 |
1995年 | 28篇 |
1994年 | 36篇 |
1993年 | 22篇 |
1992年 | 46篇 |
1991年 | 46篇 |
1990年 | 31篇 |
1989年 | 39篇 |
1988年 | 39篇 |
1987年 | 34篇 |
1986年 | 37篇 |
1985年 | 41篇 |
1984年 | 39篇 |
1983年 | 25篇 |
1982年 | 35篇 |
1981年 | 26篇 |
1979年 | 37篇 |
1978年 | 32篇 |
1977年 | 27篇 |
1975年 | 16篇 |
1974年 | 23篇 |
1972年 | 25篇 |
1971年 | 20篇 |
1966年 | 16篇 |
排序方式: 共有3850条查询结果,搜索用时 15 毫秒
51.
V. I. Dorofeeva A. G. Motin D. N. Nikol’skii Yu. S. Fedyaev 《Scientific and Technical Information Processing》2016,43(3):166-173
The main aspects of the creation of a monitoring system for the research activities of the members of a higher-education institution are considered. The scientific activities of the lecturers and members of Turgenev Orel State University is used as the basis. It is expected that this system will be an efficient tool for optimal managerial decisions at all levels. 相似文献
52.
V. K. Wadhawan 《Resonance》2005,10(11):27-41
A structure is an assembly that serves an engineering function. It is reasonable to expect that all engineering design should
be smart, and not dumb. But one can still make a distinction between smartly designed structures and smart structures. The
latter term has acquired a specific technical meaning over the last few decades. A smart structure is that which has the ability
to respond adaptively in a pre-designed useful and efficient manner to changes in environmental conditions, including any
changes in its own condition; the response is adaptive in the sense that two or more stimuli or inputs may be received as
anticipated and yet there is a single response function as per design. Smartness ensures that the structure gives optimum
performance under a variety of environmental conditions. While structures with some degree of smartness have been designed
from times immemorial, the current activity and excitement in this field derives its impetus from the level of sophistication
achieved in materials science, information technology, measurement science, sensors, actuators, signal processing, nanotechnology,
cybernetics, artificial intelligence, and biomimetics. 相似文献
53.
An analysis of the impact of stakeholder consultation during the conservation decision-making processes is presented. Defining and finding opportunities for stakeholder communication within conservation work is an ethical necessity when working with cultural heritage, but the limits and practice of this necessity are less clear. Case studies are used to explore which aspects of the conservation process stakeholders are most likely to be consulted about, and reviews the impact of their views. It asks whether conservators have a preference in which decisions they are prepared to share with stakeholders across three aspects of conservation: the initial appraisal, treatment and the display or storage. Where consultation relates to treatment, conservators are more likely to fall back on their own technical authority except when those consulted are regarded as fellow professionals. Other categories of stakeholder such as artists, originating communities, and religious groups were found to be more constructively consulted on the understanding of the object and on care related to display and storage. Conservators should be offered more explicit guidance on the ethics of consultation, the aspects of consultation that they should engage with and on the ethical ways to deal with conflict arising from consultation. 相似文献
54.
Decisions about preservation issues are made both deliberatively and unconsciously. Heuristics operate as intuitive processes which are rapid and can be reliable and effective. Deliberative decisions require time to complete and can be described by an analytic-deliberative model. The characteristics of these two processes and their relevance to preventive conservation decision-making are discussed. Each of these two processes has its strengths and weaknesses. People naturally make decisions and utilise a range of strategies without necessarily having insights into the process. This paper provides a frame to help examine, describe, and reflect upon our own and others’ decision-making in order to improve both processes and outcomes. 相似文献
55.
Given that physical activity (PA) tends to decrease with age during adolescence, addressing factors that affect change is important. This study examined the similarity and interdependence of PA as influenced by psychosocial factors among adolescent best friend dyads. A total of 660 adolescents, representing 330 best friend dyads, completed questionnaires with regard to PA, sitting time, perceived exercise benefits and barriers, physical self-perception and social support for PA. Dyads were also identified as reciprocal and non-reciprocal best friends; reciprocal means that both considered each other best friends and non-reciprocal were those in which only one considered the other a best friend. Data were analysed using a hierarchical linear model framework. Results indicated significant similarities between reciprocal best friend dyads for PA and sitting time, and for sitting time in non-reciprocal best friends (P values <.01). Psychosocial variables were associated with PA in reciprocal best friend dyads and with sitting time in reciprocal and non-reciprocal best friend dyads. Best friend gender, regular sports practice of the person, perceived exercise barriers of the best friend and best friend social support were the best predictors for PA. 相似文献
56.
The main purpose of this article is to advance an alternative perspective on the relationship between intrinsic and extrinsic motivation, and in particular to examine critically the assertion that these processes are antagonistic such that the will to learn for its own sake is inhibited by the presence of extrinsic, tangible rewards and incentives such as school grades. The presumption of an antagonistic relationship largely depends on the theoretical perspective adopted. An alternative interpretation based on need achievement theory leads to distinctly different conclusions. Exploring this new perspective allows one to identify both the conditions under which intrinsic motives may coexist with extrinsic motives as well as to consider some of the means by which intrinsic motives and caring about learning can be stimulated in their own right in school settings. 相似文献
57.
58.
This study examines a pre‐school screening survey battery with an aim to validate it in terms of predicting school performance. Subjects participating in the screening were tested at the end of their first year at school. Analysis of the data, using a canonical correlation procedure, suggested elimination of a number of test items ‐‐ age, sex, age of walking, socio‐economic rating, Draw‐a‐Man Test, balance and posture, body image, perceptual motor match, height and weight. Measures of general ability, visual discrimination, visual reception, general development, receptive language, language concepts and positional concepts were the best predictors of school performance. 相似文献
59.
60.