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Education and Information Technologies - This study aims to evaluate the success of the Student Information System (SIS) using the updated Information System Success Model (IS success model)... 相似文献
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Pressley and Harris (1994) have raised questions about the quality of research in educational intervention studies. It is suggested that Pressley and Harris have defined the problem in an overly narrow manner. Data are presented to suggest that, in part, graduate training is one cause of the problem. Other causes include a lack of theory-based work in the area and ineffective publication standards and procedures. Remedies are suggested involving the preparation of graduate students, revisions in the research process, changes in the peer review process, and stronger standards for publication. 相似文献
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Blue jays (Cyanocitta cristata) responded to projected black-and-white silhouettes of cherry leaves that were either undamaged or were damaged by either cryptic caterpillars that disguise leaf damage due to their feeding or by noncryptic caterpillars that do not disguise leaf damage due to their feeding. Pecks to the key on which the images were projected were reinforced only if interresponse times fell within specified temporal boundaries. These boundaries were different in the presence of the two types of leaf damage. Following training with one exemplar of each damage type, the jays correctly categorized novel instances of both types. They categorized novel undamaged leaves as if they were examples of leaves showing damage by cryptic caterpillars. Results suggest that the jays can readily discriminate and generalize to new members of a polymorphous stimulus class. The results suggest that techniques for the study of concept formation in animals can be applied to an animal’s ability to categorize stimuli that are involved in a potential prey-predator relationship. 相似文献
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Yuanzhi Li Margaret M Mayfield Bin Wang Junli Xiao Kamil Kral David Janik Jan Holik Chengjin Chu 《国家科学评论(英文版)》2021,8(5)
It is known that biotic interactions are the key to species coexistence and maintenance of species diversity. Traditional studies focus overwhelmingly on pairwise interactions between organisms, ignoring complex higher-order interactions (HOIs). In this study, we present a novel method of calculating individual-level HOIs for trees, and use this method to test the importance of size- and distance-dependent individual-level HOIs to tree performance in a 25-ha temperate forest dynamic plot. We found that full HOI-inclusive models improved our ability to model and predict the survival and growth of trees, providing empirical evidence that HOIs strongly influence tree performance in this temperate forest. Specifically, assessed HOIs mitigate the competitive direct effects of neighbours on survival and growth of focal trees. Our study lays a foundation for future investigations of the prevalence and relative importance of HOIs in global forests and their impact on species diversity. 相似文献
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We used a psychophysical method to examine the ability of three corvid species to discern fine-grained spatial information.
Nutcrackers, pinyon jays, and scrub-jays were required to discriminate the distance between two landmarks on a computer screen
in an operant chamber. All three species were able to discriminate between arrays that differed by 20 mm; the discrimination
gradients for scrub-jays and pinyon jays were sharper than those for nutcrackers, however. The results suggest that differences
in spatial memory among these species are not related to differences in fine-grained perception. 相似文献
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KULESZA Kamil KOTULSKI Zbigniew 《浙江大学学报(A卷英文版)》2007,8(4):511-521
In the paper we propose a general, abstract framework for Automatic Secret Generation and Sharing (ASGS) that should be independent of underlying Secret Sharing Scheme (SSS). ASGS allows to prevent the Dealer from knowing the secret. The Basic Property Conjecture (BPC) forms the base of the framework. Due to the level of abstraction, results are portable into the realm of quantum computing. Two situations are discussed. First concerns simultaneous generation and sharing of the random, prior nonexistent secret. Such a secret remains unknown until it is reconstructed. Next, we propose the framework for automatic sharing of a known secret. In this case the Dealer does not know the secret and the secret Owner does not know the shares. We present opportunities for joining ASGS with other extended capabilities, with special emphasis on PVSS and pre-positioned secret sharing. Finally, we illustrate framework with practical implementation. 相似文献
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Kamil Z. Özerk 《International Review of Education/Internationale Zeitschrift für Erziehungswissenschaft/Revue internationale l'éducation》2001,47(3-4):253-265
Cyprus, the third largest island in the Mediterranean Sea, has never been monolingual. For over four hundred years the two main languages of the island have been Turkish and Greek. Turkish-Cypriots and Greek-Cypriots met each other in the streets, but seldom in the schools. The Greek language had a place in the Turkish-Cypriots' educational system during some periods in history, but the Greek-Cypriots have never given the Turkish language a place in their school system. Until recent years, the majority of Turkish-Cypriots have had communicative competence in Greek. In contrast, there have been very few Greek-Cypriots who had communicative competence in Turkish. The history of Cyprus clearly shows that lack of policies for bilingualism on the island has weakened the good relationship between the two folk groups. The fact that the learning of the global language English is happening to the detriment of the learning of Greek among Turkish-Cypriots makes the integration of the two main cultural groups of Cypriots more difficult. Using the island's historical background, especially the intercommunal dispute during the last four decades as a basis, the author argues for a closer relationship between the economic, social, cultural, including bilingual and educational policy of the two parts of Cyprus. He sees this as the best peace policy for the island. 相似文献
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Three experiments were conducted examining short-term retention within individual object-discrimination learning-set (ODLS) problems. In Experiment I, it was found that intraproblem retention decreased during ODLS acquisition. Experiment II demonstrated that this phenomenon was not due to simple recency of experience with other ODLS problems. Experiment III demonstrated that retention was not influenced by the number of trials per problem or number of problems per session. These results were interpreted as supporting a conditional discrimination model of ODLS acquisition in bluejays.
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