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   1047篇
  免费   20篇
教育   740篇
科学研究   48篇
各国文化   11篇
体育   179篇
文化理论   30篇
信息传播   59篇
  2023年   10篇
  2022年   13篇
  2021年   18篇
  2020年   35篇
  2019年   70篇
  2018年   85篇
  2017年   74篇
  2016年   64篇
  2015年   50篇
  2014年   44篇
  2013年   224篇
  2012年   49篇
  2011年   22篇
  2010年   27篇
  2009年   15篇
  2008年   24篇
  2007年   19篇
  2006年   27篇
  2005年   17篇
  2004年   7篇
  2003年   14篇
  2002年   8篇
  2001年   9篇
  2000年   8篇
  1999年   5篇
  1998年   9篇
  1997年   7篇
  1996年   10篇
  1995年   10篇
  1994年   9篇
  1993年   7篇
  1992年   5篇
  1990年   4篇
  1989年   7篇
  1988年   5篇
  1987年   3篇
  1986年   3篇
  1985年   3篇
  1981年   4篇
  1980年   3篇
  1979年   2篇
  1978年   3篇
  1977年   3篇
  1976年   3篇
  1974年   5篇
  1973年   2篇
  1972年   5篇
  1969年   2篇
  1968年   2篇
  1956年   3篇
排序方式: 共有1067条查询结果,搜索用时 15 毫秒
71.
The educational needs of eastern and central Europe can be met by distance education methods. The need to reform and to expand open and distance education possibilities led in 1990 to the founding in Budapest of EDEN, the European Distance Education Network. After 1990, the proponents of open and distance education were able to expand the scope of their activities as the result of expanding possibilities provided by the rapidly developing information and communication technologies. The pedagogical possibilities offered by these technologies are described with an emphasis on their democratizing tendencies, their ultimate inexpensiveness in terms of the total costs of different types of higher education, and their commercial possibilities. The setting up of the Distance Education Centre of the Technical University of Budapest is presented as a case study. Governments and institutions must find the best ways to use the information and communication technologies to integrate traditional higher education with open and distance learning techniques so as to offer the best possibilities at regional, national, and institutional levels.  相似文献   
72.
The purpose of this study was to compare the pedalling technique in road cyclists of different competitive levels. Eleven professional, thirteen elite and fourteen club cyclists were assessed at the beginning of their competition season. Cyclists’ anthropometric characteristics and bike measurements were recorded. Three sets of pedalling (200, 250 and 300 W) on a cycle ergometer that simulated their habitual cycling posture were performed at a constant cadence (~90 rpm), while kinetic and kinematic variables were registered. The results showed no differences on the main anthropometric variables and bike measurements. Professional cyclists obtained higher positive impulse proportion (1.5–3.3% and P < 0.05), mainly due to a lower resistive torque during the upstroke (15.4–28.7% and P < 0.05). They also showed a higher ankle range of movement (ROM, 1.1–4.0° and P < 0.05). Significant correlations (P < 0.05) were found between the cyclists’ body mass and the kinetic variables of pedalling: positive impulse proportion (r = ?0.59 to ?0.61), minimum (r = ?0.59 to ?0.63) and maximum torques (r = 0.35–0.47). In conclusion, professional cyclists had better pedalling technique than elite and club cyclists, because they opted for enhancing pulling force at the recovery phase to sustain the same power output. This technique depended on cycling experience and level of expertise.  相似文献   
73.
This study examined to what extent adolescents’ and their friends’ risk behaviors (i.e., delinquency and alcohol use) hinder or promote their academic achievement (grade point average [GPA]), and vice versa. Longitudinal data were used (= 1,219 seventh- to ninth-grade adolescents; Mage = 13.69). Results showed that risk behaviors negatively affected adolescents’ GPA, whereas GPA protected against engaging in risk behaviors. Moreover, adolescents tended to select friends who have similar behaviors and friends’ behaviors became more similar over time (same-behavior selection and influence). Furthermore, although same-behavior effects seemed to dominate, evidence was found for some cross-behavior selection effects and a tendency in seventh grade for cross-behavior influence effects. Concluding, it is important to investigate the interplay between different behaviors with longitudinal social network analysis.  相似文献   
74.
75.
76.
The objective of this study was to assess the relationship between the institutionalization of a dependent elderly relative and the family caregiver’s mental health, quality of life and caregiving satisfaction. We present data from 140 family caregivers caring for elderly family members, of whom 77 continued to live with family members and 63 had been institutionalized. We evaluated the factors influencing the decision to institutionalize the dependent relative, the effect of institutionalization on the caregiver’s psychological well-being and quality of life and the impact of strategies to find the meaning and cope with the relative’s placement on the caregiver’s emotional health and quality of life. Care does not end after institutionalization, but the stressors the caregiver faces change. Our results suggest that finding meaning increases satisfaction and reduces feelings of overload. They show that after institutionalization, stressors affecting caregivers are partly relieved, and that finding meaning increases the caregiver’s satisfaction, while decreasing the degree of overload. Our data, further, indicates that a good relationship and cooperation between the staff of the institution and the family are important to improve the caregivers’ emotional health and quality of life, and consequently, the quality of life of the dependent elderly relative.  相似文献   
77.
European Journal of Psychology of Education - This work analyzes the possible existence of self-protection profiles based on a combination of self-handicapping (behavioral and claimed) strategies...  相似文献   
78.
This conceptual paper is concerned with the discursive and applied attributes of ‘authenticity’ in higher education, with a particular focus on teaching science through student research. Authenticity has been mentioned in passing, claimed or discussed by scholars in relation to different aspects of higher education, including teaching, learning, assessment and achievement. However, it is our position that in spite of the growing appeal of authenticity, the use of the term is often vague and uncritical. The notion of authenticity is complex, has a range of meanings and is sometimes contested. Therefore, we propose here a practice-oriented and theoretically-informed framework for what constitutes authenticity within the context of teaching through research. This framework brings together aspects of the ‘real world,’ existential self, and embedded meaning, and aligns them with different outcomes relating to knowledge and to students. Different models of teaching through research with conflicting claims to authenticity are used to illustrate the framework.  相似文献   
79.
The governments of cities have to make important decisions on the future of their communities. In the past, the vision, objectives, and goals of cities have been determined mainly by considering tangible assets as the main factors of a city's prosperity. However, in the knowledge economy, the role of intangible assets in wealth creation has become fundamental. As a result, a framework of intangible assets that allows navigation from the present reality to the future vision has become an urgent need for all cities. The paper has two well-defined parts. In the first part, it develops a specific methodology and framework for measuring and managing the intellectual capital of cities. In the second part, the study deals with the practical application of this model of intellectual capital in cities with the specific case of the city of Mataró, providing some details of the first cities’ intellectual capital report.  相似文献   
80.
Bone turnover is affected by exercise throughout the lifespan, especially during childhood and adolescence. The objective of this study was to investigate the impact of different sports on total and regional bone mineral density in male Brazilian adolescent athletes. Forty-six adolescents aged 10-18 years participated in the study: 12 swimmers, 10 tennis players, 10 soccer players, and 14 sedentary individuals. The athletes had engaged in physical activities for more than 10 h per week in the previous 6 months. Bone mineral density of the lumbar spine (L1-L4), left proximal femur region, and whole body was evaluated by dual-energy X-ray absorptiometry. Results showed higher mean values in the proximal femur region of tennis and soccer players (1.02 ± 0.18; 0.96 ± 0.16, respectively) than swimmers and controls (0.91 ± 0.14 and 0.87 ± 0.06, respectively) (P < 0.05). In relation to the impact of sporting activities based on bone age determination, we observed significant differences in bone mineral density at all evaluated sites at the end of puberty (16-18 years) compared with 10-12 years, with increases of 78% in the lumbar spine, 47% in the proximal femur, and 38% in the whole body.  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