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101.
102.
沈阳市少年运动员意志品质研究 总被引:1,自引:0,他引:1
目的:探讨沈阳市少年运动员的意志品质特点,并比较业余体校、专业少年运动员和普通少年学生在意志品质上的差异。方法:主要采用问卷法对沈阳市70名少年运动员和70名普通少年学生进行调查。结果:(1)女运动员在坚韧性上显著优于男运动员,在果敢性上不如男运动员;(2)业余与专业少年运动员的意志品质不存在显著差异;(3)少年运动员在意志品质的综合水平、自制性、果敢性、独立性等因素上显著优于普通少年学生。结论:少年运动员整体意志水平较高。 相似文献
103.
A fast and efficient page ranking mechanism for web crawling and retrieval remains as a challenging issue. Recently, several link based ranking algorithms like PageRank, HITS and OPIC have been proposed. In this paper, we propose a novel recursive method based on reinforcement learning which considers distance between pages as punishment, called “DistanceRank” to compute ranks of web pages. The distance is defined as the number of “average clicks” between two pages. The objective is to minimize punishment or distance so that a page with less distance to have a higher rank. Experimental results indicate that DistanceRank outperforms other ranking algorithms in page ranking and crawling scheduling. Furthermore, the complexity of DistanceRank is low. We have used University of California at Berkeley’s web for our experiments. 相似文献
104.
Ali Khosrowbeygi Nosratollah Zarghami 《Indian journal of clinical biochemistry : IJCB》2008,23(1):49-52
There is growing evidence that damage to spermatozoa by reactive oxygen species play a key role in male infertility. The aim
of this study was to assess seminal plasma free 8-Isoprostane levels in men with asthenozoospermia, asthenoteratozoospermia
and oligoasthenoteratozoospermia compared to normozoospermic males and its correlation with seminal parameters. The case group
consisted of men with asthenozoospermia (n=15), asthenoteratozoospermia (n=16) and oligoasthenoteratozoospermia (n=15). The
control group consisted of 16 males with normozoospermia. After Purification of Free 8-Isoprostane by affinity column, its
concentration was measured by enzyme immunoassay method. Free 8-Isoprostane evaluation showed significantly greater values
in the total case group (n=46) versus control group (18.23±3.56 vs 2.6±0.38 ng/ml). In each case group free 8-Isoprostane
also showed a significant increasing compared to normozoospermic males. Free 8-Isoprostane showed an inversely significant
correlation with sperm motility and sperm morphology. Lipid peroxidation could have significant role in etiology of sperm
abnormalities. Measurement of 8-Isoprostane can be used as a specific biomarker for assessing lipid peoxidation in sperm. 相似文献
105.
Simsek Hasan Yildirim Ali 《International Review of Education/Internationale Zeitschrift für Erziehungswissenschaft/Revue internationale l'éducation》2000,46(3-4):327-342
The data used in this paper were derived from a larger project which had the aim of critically evaluating the Turkish vocational education system on a number of different levels. This article examines the administrative and organisational practices in a selected group of secondary vocational schools in Turkey from the point of view of school administrators, teachers and industrial managers. The results indicate that the Turkish vocational education system is characterised by a centralised, top-down bureaucracy, which inhibits innovative capacity. The authors argue that a degree of decentralisation is necessary at various levels of the system. 相似文献
106.
Colin Latchem Insung Jung Kumiko Aoki Ali Ekrem Ozkul 《British journal of educational technology : journal of the Council for Educational Technology》2008,39(4):610-630
Japan and Korea have highly developed information and communications technology infrastructures and have recently reformed their higher education systems and encouraged e-transformation. However, Japanese universities have not embraced e-learning as wholeheartedly as their Korean counterparts. The paper concludes that this is due to governmental and institutional failure to develop a cogent vision and strategic plan for e-learning, to recognise the need for fundamental shifts in organisational cultures and structures and pedagogy and to provide training, funding, recognition and reward for such development. It attributes this to differences in the cultural perspectives, values and customs of the two countries' policy makers, managers and faculty members. The findings are seen to hold important lessons for other countries embarking on e-transformation. 相似文献
107.
The perspective of six Malaysian students on playing video games: Beneficial or detrimental? 总被引:1,自引:0,他引:1
Roselan Baki Eow Yee Leng Wan Zah Wan Ali Rosnaini Mahmud Mohd. Sahandri Gani Hamzah 《美中教育评论》2008,5(11):11-21
This study provides a glimpse into understanding the potential benefits as well as harm of playing video games from the perspective of six Malaysian secondary school students, aged 16-17 years old. The rationale of the study is to enable parents, educators, administrators and policy makers to develop a sound understanding on the impact of playing video games before making any judgment on the contemporary youth culture. Thus, further decision on the acceptance of video games as a new innovation in school or at home could be considered. Although this study is not very extensive, the findings suggest that playing video games contributes to cognitive, social, motivational and emotional development. However, potential harms do exist. Parents play an important role in guiding their children either directly or indirectly, as indicated by the respective students. Caution is advised in the interpretation of the study's findings as it is solely based on the perspectives of the students, as the first person's views. Nevertheless, each student has their very own perspective on the impact of video games on them. 相似文献
108.
Internationalization of higher education: Challenges, strategies, policies and programs 总被引:1,自引:0,他引:1
Akbar Zolfaghari Mohammad Shatar Sabran Ali Zolfaghari 《美中教育评论》2009,6(5):1-8,20
In today's changing world, the idea of internationalization of higher education especially in developing countries has been deduced from globalization of education process. The international aspect of higher education is becoming increasingly important, composite, and confusing. The higher education has an effect on the society through policy-making, funding, and planning. The purpose of this paper is to analyze the meaning, definition, importance, necessity, and pre-requisites of internationalization of higher education. This paper also studies the programs and strategies of internationalization of higher education. Key challenges for the future direction of internationalization are identified in this paper. 相似文献
109.
Persisting difficulties in body procurement in Turkey led to the acquisition of donated, unclaimed, autopsied, and imported bodies regulated under current legislature. Yet, no study had investigated the extent of the on‐going cadaver problem. This study was aimed to outline cadaver sources in anatomy departments and their effectiveness by means of an online survey. Additionally, official websites of each department were investigated regarding any information on body donation. Unclaimed cadavers (84.8%) were the major source for anatomy departments, followed by donated (50%) and imported cadavers (39.1%). Foundation‐based medical faculties were more likely to import cadavers (P = 0.008). There was a moderate increase (rs = 0.567; P = 0.018) in donation registrations to our department after 2000. The departments in cities with significantly higher City‐Based Gross Domestic Product measures (US$9,900 vs. US$16,772, P = 0.041), frequencies for mid‐ or high‐school graduates (30.4% vs. 31.3%, P = 0.041), and frequencies for under‐ or post‐graduates (13.1% vs. 15.8%, P = 0.24) had managed to use donated cadavers. Anatomy departments’ major reasons for using unclaimed cadavers were education (45.9%), unclaimed cadavers being the only source (24.3%), and receiving inadequate donations (21.6%). Nine out of seventy‐four departments (12.2%) provided information regarding body donation on their websites. Body procurement remains as a serious problem in Turkey and it is apparent that current legislature does not provide a sufficient cadaver inflow. Similarly, anatomy departments’ effectiveness in public awareness of body donation and support in the National Body Donation Campaign seems questionable. Anat Sci Educ 11: 155–165. © 2017 American Association of Anatomists. 相似文献
110.
This paper is devoted to the non-fragile exponential synchronization problem of complex dynamical networks with time-varying coupling delays via sampled-data static output-feedback controller involving a constant signal transmission delay. The dynamics of the nodes contain s quadratically restricted nonlinearities, and the feedback gain is allowed to have norm-bounded time-varying uncertainty. The control design is based on a Lyapunov–Krasovskii functional, which consists of the sum of terms assigned to the individual nodes, i.e., it is constructed without merging the complex dynamical network’s nodes into a single large-scale system. In this way, the proposed design method has substantially reduced computational complexity and improved conservativeness, and guaranties non-fragile exponential stability of the error system. The sufficient stability condition is expressed in terms of linear matrix inequalities that are solvable by standard tools. The efficiency of the proposed method is illustrated by numerical examples. 相似文献