排序方式： 共有118条查询结果，搜索用时 15 毫秒
91.
G. Z. Zalaev N. E. Kalenov V. A. Tsvetkova 《Scientific and Technical Information Processing》2016,43(4):268-274
This paper considers basic aspects of the preservation of digital content using optical discs and special storage systems. Features of write-once and rewritable optical discs are shown. The EMC Centera datastorage system is discussed. The experience of work on the formation and storage of information arrays on the example of Digital Library Scientific Heritage of Russia and projects of the Russian State Archive of Scientific and Technical Documentation is analyzed. 相似文献
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Hanna Schleihauf Stefanie Hoehl Neli Tsvetkova Alexander König Katja Mombaur Sabina Pauen 《Child development》2021,92(1):222-238
From preschool age, humans tend to imitate causally irrelevant actions—they over-imitate. This study investigated whether children over-imitate even when they know a more efficient task solution and whether they imitate irrelevant actions equally from a human compared to a robot model. Five-to-six-year-olds (N = 107) watched either a robot or human retrieve a reward from a puzzle box. First a model demonstrated an inefficient (Trial 1), then an efficient (Trial 2), then again the inefficient strategy (Trial 3). Subsequent to each demonstration, children copied whichever strategy had been demonstrated regardless of whether the model was a human or a robot. Results indicate that over-imitation can be socially motivated, and that humanoid robots and humans are equally likely to elicit this behavior. 相似文献
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Natalia Maloshonok 《高等教育研究与发展》2020,39(3):515-531
ABSTRACTPatterns of students’ time-use can provide important insights into student learning and development in higher education. Previous empirical studies conducted in developed countries do not allow us to generalize findings on time-use patterns for students from countries with different national systems. This paper aims to identify national differences in undergraduate patterns of time-use and their links with the individual characteristics of students. The sample (N?=?166,919) was derived from highly selective universities from three countries: the USA, China, and Russia. Significant differences in undergraduate time-use patterns in three countries were observed. In addition, significant interaction effects between national variables and individual characteristics were found. The results allow us to conclude that there are national differences in the power and direction of links between time-use patterns and individual characteristics. 相似文献
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Natalia Romero-Franco Pedro Jiménez-Reyes Adrián Castaño-Zambudio Fernando Capelo-Ramírez Juan José Rodríguez-Juan Jorge González-Hernández 《European Journal of Sport Science》2017,17(4):386-392
The purpose of this study was to assess validity and reliability of sprint performance outcomes measured with an iPhone application (named: MySprint) and existing field methods (i.e. timing photocells and radar gun). To do this, 12 highly trained male sprinters performed 6 maximal 40-m sprints during a single session which were simultaneously timed using 7 pairs of timing photocells, a radar gun and a newly developed iPhone app based on high-speed video recording. Several split times as well as mechanical outputs computed from the model proposed by Samozino et al. [(2015). A simple method for measuring power, force, velocity properties, and mechanical effectiveness in sprint running. Scandinavian Journal of Medicine & Science in Sports. https://doi.org/10.1111/sms.12490] were then measured by each system, and values were compared for validity and reliability purposes. First, there was an almost perfect correlation between the values of time for each split of the 40-m sprint measured with MySprint and the timing photocells (r?=?0.989–0.999, standard error of estimate?=?0.007–0.015?s, intraclass correlation coefficient (ICC)?=?1.0). Second, almost perfect associations were observed for the maximal theoretical horizontal force (F0), the maximal theoretical velocity (V0), the maximal power (Pmax) and the mechanical effectiveness (DRF – decrease in the ratio of force over acceleration) measured with the app and the radar gun (r?=?0.974–0.999, ICC?=?0.987–1.00). Finally, when analysing the performance outputs of the six different sprints of each athlete, almost identical levels of reliability were observed as revealed by the coefficient of variation (MySprint: CV?=?0.027–0.14%; reference systems: CV?=?0.028–0.11%). Results on the present study showed that sprint performance can be evaluated in a valid and reliable way using a novel iPhone app. 相似文献
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We analyzed the current state of the Russian mass media market in terms of its influence on the information market in general.
We showed the dynamics of the development of Russian publishing business and elaborated on the sector of scientific and technical
information. We cite data on the information supply of VINITI RAS electronic products to the basic units of Russia’s innovation
economy. 相似文献
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Aerobic, anaerobic, and skill performance with regard to classification in wheelchair rugby athletes
Morgulec-Adamowicz N Kosmol A Molik B Yilla AB Laskin JJ 《Research quarterly for exercise and sport》2011,82(1):61-69
The purpose of the study was to examine the sport-specific performance of wheelchair rugby players with regard to their classification. A group of 30 male athletes from the Polish Wheelchair Rugby League participated in the study. The seven International Wheelchair Rugby Federation classes were collapsed into four groups. Standardized measures of aerobic, anaerobic, and skill performance were examined to identify performance differences among the four groups. Major findings were that most differences were between Group I players and all others and that anaerobic performance was the most sensitive to classification differences. Another important finding was that for all other groups, with one exception, adjacent groups did not differ in anaerobic, aerobic, and sport-specific skill performance. The results of this study demonstrate the need to investigate other performance measures that will help in evaluating the current wheelchair rugby classification system. 相似文献
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E. I. Kozlova V. A. Tsvetkova O. V. Barysheva 《Scientific and Technical Information Processing》2017,44(1):38-42
This paper discusses the electronic-library concept and the need for the national standard GOST R 7.0.96-2016 Electronic Libraries. Main Types. Structure. Technologies of Formation for the library information community. It analyzes the term electronic library and substantiates the definition of an electronic library as a system, which was adopted in the standard. It describes the characteristic properties of an electronic library as a subtype of an information system; the presence of document information and functional capabilities distinguish it from other information systems. 相似文献
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This paper reports the findings of a study on the positioning of an academic book in the information market. The contribution and significance of academic books to the spheres of science and education has been noted. The quantitative characteristics illustrate the relative stagnation of an academic book publishing based on the data obtained from the Russian Book Chamber. Expert-based evaluations from the leading research and academic libraries indicate that the official statistics are somewhat overstated and the quality of academic books has declined. 相似文献