全文获取类型
收费全文 | 546篇 |
免费 | 7篇 |
国内免费 | 1篇 |
专业分类
教育 | 358篇 |
科学研究 | 29篇 |
各国文化 | 9篇 |
体育 | 72篇 |
文化理论 | 6篇 |
信息传播 | 80篇 |
出版年
2023年 | 3篇 |
2022年 | 2篇 |
2021年 | 7篇 |
2020年 | 12篇 |
2019年 | 23篇 |
2018年 | 42篇 |
2017年 | 21篇 |
2016年 | 30篇 |
2015年 | 12篇 |
2014年 | 26篇 |
2013年 | 115篇 |
2012年 | 23篇 |
2011年 | 24篇 |
2010年 | 15篇 |
2009年 | 22篇 |
2008年 | 19篇 |
2007年 | 19篇 |
2006年 | 12篇 |
2005年 | 10篇 |
2004年 | 7篇 |
2003年 | 5篇 |
2002年 | 3篇 |
2001年 | 7篇 |
2000年 | 5篇 |
1999年 | 2篇 |
1998年 | 7篇 |
1997年 | 3篇 |
1996年 | 5篇 |
1994年 | 2篇 |
1993年 | 4篇 |
1992年 | 4篇 |
1991年 | 7篇 |
1990年 | 6篇 |
1988年 | 3篇 |
1986年 | 2篇 |
1985年 | 3篇 |
1983年 | 3篇 |
1982年 | 5篇 |
1980年 | 3篇 |
1979年 | 2篇 |
1977年 | 5篇 |
1967年 | 2篇 |
1926年 | 1篇 |
1925年 | 1篇 |
1923年 | 1篇 |
1921年 | 1篇 |
1904年 | 3篇 |
1903年 | 3篇 |
1845年 | 1篇 |
1843年 | 1篇 |
排序方式: 共有554条查询结果,搜索用时 15 毫秒
131.
In 2 studies, an expectancy-value framework was applied to investigate effort expended on mathematics homework. In Study 1 (2,712 students in grades 5, 7, and 9; mean age=13.37 years), lower homework effort was found in higher grades. The effects of intrinsic value on homework effort were higher in the older cohorts, whereas the effects of the expectancy component were lower. In Study 2 (571 students in grades 8 and 9; mean age=14.72), an expanded expectancy-value framework was found to explain both homework and classwork variables. The means for effort and value were lower for homework than for classwork; these differences were partly moderated by students' conscientiousness. The implications of homework behavior and motivation for developmental research are highlighted. 相似文献
132.
John Oliver 《Action Learning: Research and Practice》2006,3(2):213-220
One of the principle tenets of action learning is that it provides the potential to explore and solve complex organisational problems. The question of how best to develop a future business strategy is such a problem. Existing literature on strategy making presents a multi-faceted debate, suggesting that the complexity of competitive environments means that the strategic route forward for many organisations can often be unclear. As a lecturer who teaches strategy at university, I have been intrigued by the ‘Learning Group’ of strategy making (Argyris & Schon, 1974; Quinn, 1980; Mintzberg, 1987; Argyris, 1993, 2004) for some time, as it argues that competitive environments are complex and unpredictable, and therefore, organisational strategies must be reactive and flexible. As a consequence, strategies simply emerge over time, and are characterised by a process of trial and error where individuals and groups within the organisation learn more about the environment they are competing in and how best to take advantage of it.
This paper aims to explore two key questions: firstly, to examine the role that action learning could play in helping strategy makers become more reflective practitioners, and secondly, to explore the use of peer consultancy as a vehicle to enable action learning. This paper presents the findings of empirical research from an action learning project with the Chief Executive of a leading UK service provider of health and fitness. It provides a detailed examination of how a service management strategy was developed in practice and enabled by a process of iterative action, change, reflection and learning. 相似文献
133.
Torsten Oliver Salge 《Research Policy》2012,41(4):720-733
This article explores the temporal trajectories of innovative search. Drawing on conceptual ideas from the behavioural theory of the firm, it proposes that the level of temporal persistence in organisations’ innovative search activities is affected by four key factors. These include (i) the mode of innovative search as well as organisations’ (ii) strategic aspirations, (iii) slack resources and (iv) performance feedback. This conceptual model is tested in the context of public hospital services in England. Results from dynamic panel data analyses reveal stronger temporal persistence in science- than in practice-based innovative search activities. Findings also suggest that specialist hospitals relying on a continuous stream of new products, services and processes to meet their strategic aspirations are better positioned to sustain science-based innovative search activities than their generalist counterparts. Similarly, results uncover a positive association between the availability of financial slack and hospitals’ ability to continuously engage in superior levels of science-based innovative search. Contrary to theoretical expectations, however, positive performance feedback does not appear to have any persistence-enhancing effect. 相似文献
134.
135.
136.
Oliver PESCH 《Learned Publishing》2007,20(1):23-29
In 2005, SUSHI became the latest buzzword in the library community. This article (and this kind of SUSHI) refers to usage data, not raw fish. The growth of online collections has resulted in libraries demanding that publishers provide detailed usage data to allow them to better manage their collections and purchases. The Project COUNTER Code of Practice was created in response to this need; however, it did not address the painstaking task of collection and management of the usage data. SUSHI is a new protocol developed to allow for automated retrieval of COUNTER usage reports from publishers and other content providers. 相似文献
137.
Obst O 《Health information and libraries journal》2003,20(1):22-32
This study in an academic medical sciences library setting examines the correlation of usage of a matched set of print and online titles, the validity of e-journals usage statistics and the impact of online journals on print journal usage. The print and online usage was determined for 270 journals, both versions of which were available. Print usage was determined annually since 1997 using the reshelving and the error-copies method. Online usage statistics were delivered by five publishers and corrected for redundant multiple accesses. Print journal usage decreased by 22.3 and 30.2% respectively over each of 2 years after the introduction of online journals. Journals published both in print and online lost 30.4% of their print usage within 2 years. The total loss of usage of print-only titles in the same period was somewhat higher, at 45.8%. The average correlation between online and print usage is 0.60 and 0.67 respectively. For the examined titles, users accessed the online versions ten times as often as the print version. Two clearly distinguishable groupings emerged: while with Academic Press and Elsevier, e-journal usage exceeded print usage by a factor of 3 or 4, the e-journals of Blackwell, HighWire and Springer were used on average 14.6 times as frequently as the corresponding print journals. Each usage of a print article cost 2.79-50.82 Euro, each usage of an online article 0.31-15.10 Euro, depending on the publisher. On average, the usage of an online article was 5.4 times cheaper. Within 2-3 years the usage of online journals has outstripped that of print titles by a factor of ten, but the specific spectrum of usage remains much the same as when only print journals alone existed. Print titles not available online suffer a greater decline in usage compared with print/online journals. This confirms that what is read or purchased is determined primarily by ease of access and that there is a steady tendency to reduce the multiplicity of access modes to a manageable few. The availability of journals online seems to have created a new clientele, at least in the case of the German-language Springer journals. The connection between supplier and supply is much less clear with e-journals than it is with print titles. Therefore it is very important to stress and encourage the role of the library as the supplier of this sort of information in the university environment. Collection building issues are discussed in the light of the results. 相似文献
138.
139.
If being around smart people makes us smarter and more productive, what can regions do to attract smart people? This paper considers endogenous cultural amenities as a location factor for high-skilled workers. To overcome selection in the provision of cultural amenities, we exploit variation in contemporaneous cultural amenities that is explained by the path-dependence of historical agglomerations of the cultural activities. To assess spillovers from high-skilled workers attracted by cultural amenities, we use a 1% sample drawn from the population of all West German workers under social security during the period 1975–2010. This panel of individual observations allows us to compare wages of similar individuals who work in locations with different levels of high-skilled workers who are attracted by cultural amenities. To account for non-random selection of workers among cities, we use individual-location fixed effects. Our results show that cultural amenities are an important factor in the location decision of high-skilled workers. The positive effect of the local share of high-skilled workers on unskilled, skilled and high-skilled wages indicates strong and productive spillovers. 相似文献
140.
管理员享用着管理更加方便的网络打印机,却不知道他们通过SNMP(简单网络管理协议),有可能打开了安全的缺口。 相似文献