全文获取类型
收费全文 | 102篇 |
免费 | 0篇 |
专业分类
教育 | 61篇 |
科学研究 | 10篇 |
各国文化 | 1篇 |
体育 | 19篇 |
文化理论 | 3篇 |
信息传播 | 8篇 |
出版年
2022年 | 3篇 |
2021年 | 2篇 |
2020年 | 6篇 |
2019年 | 6篇 |
2018年 | 6篇 |
2017年 | 6篇 |
2016年 | 5篇 |
2015年 | 3篇 |
2014年 | 4篇 |
2013年 | 26篇 |
2012年 | 3篇 |
2011年 | 4篇 |
2010年 | 4篇 |
2009年 | 1篇 |
2008年 | 4篇 |
2007年 | 1篇 |
2006年 | 3篇 |
2004年 | 3篇 |
2003年 | 1篇 |
2002年 | 2篇 |
1998年 | 2篇 |
1997年 | 1篇 |
1996年 | 2篇 |
1994年 | 1篇 |
1991年 | 1篇 |
1988年 | 1篇 |
1978年 | 1篇 |
排序方式: 共有102条查询结果,搜索用时 15 毫秒
41.
Cristina Lpez-Pujalte Vicente P. Guerrero Bote Flix de Moya Anegn 《Information processing & management》2002,38(6):971
There have been recent applications of genetic algorithms to information retrieval, mostly with respect to relevance feedback. Nevertheless, they are yet to be evaluated in a way that allows them to be compared with each other and with other relevance feedback techniques. We here implement the different genetic algorithms that have been applied in the literature together with some of our own variations, and evaluate them using the residual collection method described by Salton in 1990 for the evaluation of relevance feedback techniques. We compare the results with those of the Ide dec-hi method, which is one of the traditional methods that yields the best results. 相似文献
42.
Soccer,nationalism and the media in contemporary Spanish society: La Roja,Real Madrid & FC Barcelona
Vicente Rodríguez Ortega 《Soccer & Society》2016,17(4):628-643
This essay examines the relationship between nationalism and soccer in contemporary Spain. Firstly, it pays close attention to the roles of the national team and the rivalry between Real Madrid and FC Barcelona in articulating conflictual social agendas. Secondly, it compares how Spanish and Catalan media utilize the Spanish soccer team success to articulate clashing forms of nationalism. It scrutinizes a wide range of journalistic interventions as well as the TV coverage of the national soccer team in the Spanish and Catalan media to determine how they constantly re-articulate the role of soccer in defining the distinguishing characteristics of the nation. Lastly, it studies a series of soccer-related cultural and social practices such as street rallies, gatherings and celebrations in order to determine their role within contemporary nationalism in Spain. 相似文献
43.
Carlos Balsalobre-Fernández Chris Bishop José Vicente Beltrán-Garrido Pau Cecilia-Gallego Aleix Cuenca-Amigó Daniel Romero-Rodríguez 《Journal of sports sciences》2013,31(21):2420-2424
ABSTRACTThe aim of the present investigation was to analyze the validity and reliability of a novel iPhone app (CODTimer) for the measurement of total time and interlimb asymmetry in the 5 + 5 change of direction test (COD). To do so, twenty physically active adolescent athletes (age = 13.85 ± 1.34 years) performed six repetitions in the COD test while being measured with a pair of timing gates and CODTimer. A total of 120 COD times measured both with the timing gates and the app were then compared for validity and reliability purposes. There was an almost perfect correlation between the timing gates and the CODTimer app for the measurement of total time (r = 0.964; 95% Confidence interval (CI) = 0.95–1.00; Standard error of the estimate = 0.03 s.; p < 0.001). Moreover, non-significant, trivial differences were observed between devices for the measurement of total time and interlimb asymmetry (Effect size < 0.2, p > 0.05). Similar levels of reliability were observed between the timing gates and the app for the measurement of the 6 different trials of each participant (Timing gates: Intraclass correlation coefficient (ICC) = 0.651–0.747, Coefficient of variation (CV) = 2.6–3.5%; CODTimer: ICC = 0.671–0.840, CV = 2.2–3.2%). The results of the present study show that change of direction performance can be measured in a valid, reliable way using a novel iPhone app. 相似文献
44.
Vicente Talanquer 《International Journal of Science Education》2013,35(15):1874-1890
ABSTRACTOne of the central goals of modern science and chemistry education is to develop students’ abilities to understand complex phenomena, and productively engage in explanation, justification, and argumentation. To accomplish this goal, we should better characterise the types of reasoning that we expect students to master in the different scientific disciplines. This analysis is needed to support the design of instructional tasks, teaching strategies, and assessments that foster those ways of thinking. This essay contributes in this direction by characterising the major types of rationales built and applied by experts when analysing chemical systems and processes. The term ‘chemical rationale’ is used to refer to any product of reasoning that uses chemical knowledge to build explanations, justifications or arguments. Three main types of rationales are identified and discussed: Phenomenological, Mechanical, and Structural. Difficulties associated with learning how to build each type of rationale are highlighted, and implications for research and practice of this other chemistry ‘triplet’ are discussed. 相似文献
45.
Two new methods for item exposure control were proposed. In the Progressive method, as the test progresses, the influence of a random component on item selection is reduced and the importance of item information is increasingly more prominent. In the Restricted Maximum Information method, no item is allowed to be exposed in more than a predetermined proportion of tests. Both methods were compared with six other item-selection methods (Maximum Information, One Parameter, McBride and Martin, Randomesque, Sympson and Hetter, and Random Item Selection) with regard to test precision and item exposure variables. Results showed that the Restricted method was useful to reduce maximum exposure rates and that the Progressive method reduced the number of unused items. Both did well regarding precision. Thus, a combined Progressive-Restricted method may be useful to control item exposure without a serious decrease in test precision. 相似文献
46.
Shuangshuang Zhang Zihe Li Kun Luo Julong He Yufei Gao Alexander V Soldatov Vicente Benavides Kaiyuan Shi Anmin Nie Bin Zhang Wentao Hu Mengdong Ma Yong Liu Bin Wen Guoying Gao Bing Liu Yang Zhang Yu Shu Dongli Yu Xiang-Feng Zhou Zhisheng Zhao Bo Xu Lei Su Guoqiang Yang Olga P Chernogorova Yongjun Tian 《国家科学评论(英文版)》2022,9(1)
Carbon is one of the most fascinating elements due to its structurally diverse allotropic forms stemming from its bonding varieties (sp, sp2 and sp3). Exploring new forms of carbon has been the eternal theme of scientific research. Herein, we report on amorphous (AM) carbon materials with a high fraction of sp3 bonding recovered from compression of fullerene C60 under high pressure and high temperature, previously unexplored. Analysis of photoluminescence and absorption spectra demonstrates that they are semiconducting with a bandgap range of 1.5–2.2 eV, comparable to that of widely used AM silicon. Comprehensive mechanical tests demonstrate that synthesized AM-III carbon is the hardest and strongest AM material known to date, and can scratch diamond crystal and approach its strength. The produced AM carbon materials combine outstanding mechanical and electronic properties, and may potentially be used in photovoltaic applications that require ultrahigh strength and wear resistance. 相似文献
47.
Carmen?CamareroEmail author Ma?José?Garrido Eva?Vicente 《Journal of Cultural Economics》2011,35(4):247-266
Our work pursues a twin aim. Firstly, we explore the influence of organizational size on innovations in museums as well as
its impact on museums’ economic, market and social performance. Secondly, we analyse how the (public–private) funding of such
organizations impacts innovation and performance. The empirical work is based on information from a survey of 491 museums
(British, French, Italian and Spanish). We find that museum size does prove relevant in the commitment to engage in innovation
but that public funding of museums does not encourage innovation. We also highlight the importance of the explanatory power
of the type of funding on the performance of these cultural organizations. This research also reveals how organizational and
technological innovations as well as innovation in value creation in museums enhance economic, market and social performance. 相似文献
48.
David González-Cutre Roberto Ferriz Vicente J. Beltrán-Carrillo José A. Andrés-Fabra Carlos Montero-Carretero Eduardo Cervelló 《教育心理学》2014,34(3):367-384
The aim of this study was to analyse the effects of a school-based intervention to promote physical activity, utilising the postulates of the trans-contextual model of motivation. The study examined two separate classes of elementary school students (mean age 11.28?years), one of which served as the control group (n?=?26) and the other as the experimental group (n?=?21). The intervention in the experimental group consisted of showing videos related to physical activity participation, conducting discussions and doing tasks related to the content presented in the videos and conducting family discussions. Autonomy support from teachers, peers and parents; motivation in physical education and leisure time physical activity; the different variables of theory of planned behaviour; and physical activity, were measured before and after the intervention. Results showed an increase in teacher autonomy support, identified regulation in physical education, autonomy support from parents and peers, integrated and identified regulation in leisure time physical activity, control, subjective norm, intention and physical activity in the experimental group. Furthermore, this increase resulted in post-intervention differences across groups in such variables. Results are discussed in relation to the important role of families in the promotion of physical activity participation. 相似文献
49.
C. Dorado J. Sanchis Moysi G. Vicente J.A. Serrano L.P. Rodriguez J.A.L. Calbet 《Journal of sports sciences》2013,31(8):591-597
The aim of this study was to determine the effects of long-term professional golf participation on whole-body and regional bone mass and density. Dual-energy X-ray absorptiometry was performed on 15 male professional golfers and 18 sedentary individuals, matched for sex, race, age (29 ± and 25 ± 1 years, respectively), body mass (79 ± 2 and 74 ± 2 kg), height (1.78 ± 0.01 and 1.77 ± 0.02 m) and percent body fat (20 ± 2 and 21 ± 2%; mean ± s χ). We found that long-term professional golf participation is not associated with significant increments in regional or whole-body bone mass or density. Neither the lumbar spine nor the femoral neck showed any noticeable enhancement of bone mass in professional golfers compared with controls from the same population. The only effect of professional golf participation on regional body composition was a 9% increase in muscle mass in the dominant arm (P ? 0.05). 相似文献
50.