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The topic of the paper is both the pth moment and almost sure stability on a general decay rate for neutral stochastic functional differential equations, by applying the Razumikhin approach. This concept is extended to neutral stochastic differential delay equations. The results obtained in the paper are more general and they may be specialized on the exponential, polynomial or logarithmic stability. Moreover, some neutral stochastic functional differential equations which are not pth moment or almost surely exponentially stable, could be stable with respect to a certain lower decay rate. In that sense, some nontrivial examples are presented to justify and illustrate the usefulness of the theory. More precisely, one can say anything about both the pth moment and almost sure exponential stability, although the solutions are pth moment and almost surely polynomially or logarithmically stable. 相似文献
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Svetlana Chesser William Murrah Sean Alan Forbes 《The American journal of distance education》2020,34(3):211-223
ABSTRACT This study was designed to investigate how college students’ personality characteristics relate to their choice of instructional delivery (online or face-to-face) and whether this choice mediates the relationship between personality and academic performance. One hundred eighty-eight undergraduate students were given a choice between taking the same general education course online or face-to-face. Students completed the Big Five Inventory (BFI) upon the conclusion of this course. Using a Bayesian regression course modeling framework, we found that Conscientiousness and Agreeableness were related to the choice of instructional delivery. Students scoring higher on Conscientiousness and lower on Agreeableness tended to choose the online environment. Conscientiousness also was a direct predictor of academic achievement regardless of the course environment. These results suggest that in order to find the best fit between student and the learning environment, it is important to identify personality characteristics indicative of success in online and traditional face-to-face courses to help students to become more efficient learners and assist faculty in designing quality courses to meet students’ needs. 相似文献
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Svetlana Kostrykina Kerry Lee John Hope 《Perspectives: Policy and Practice in Higher Education》2018,22(2):58-67
The unprecedented geopolitical and economic shifts across the world have triggered much debate over the re-thinking of internationalisation of higher education (IoHE). This article discusses how a deeper understanding of the knowledge economy paradigm contributes to re-thinking IoHE, and how it reshapes the relations between the west and the rest in the international education industry. In the global knowledge race, the rules are set by the knowledge economy agenda, but these rules could be changed through appropriate IoHE strategies. The knowledge economy promotes a predominantly western-oriented knowledge paradigm, and IoHE contributes to its dissemination. For this reason, it is important to consider how the western theoretical underpinnings of IoHE and the knowledge economy are transformed and integrated in a given local context and if this game is worth playing. 相似文献
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The media are normatively expected to play significant roles in conflictual discussions within national and international communities. As previous research shows, digital platforms make scholars rethink these roles based on media behavior in online communicative environments as well as on the structural limitations of the platforms. At the same time, traditional dichotomies between information dissemination and opinion formation roles, although seemingly universal, also vary across cultures. We look at four recent conflicts of comparable nature in the United States, Germany, France, and Russia to assess the roles that legacy media have performed in the respective ad hoc discussions on Twitter. Our approach differs from previous studies, as we combine content analysis of tweets by the media and journalists with the resulting positions of the media in the discussion graphs. Our findings show that, despite the overall trend of the “elite” and regional media sticking to information dissemination, online-only media and individual journalists vary greatly in their normative strategies, and this is true across countries. We also show that combining performance in content and social network analysis may allow for reconceptualization of media roles in a more flexible way. 相似文献
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In Greek orthography, stress position is marked with a diacritic. We investigated the developmental course of processing the stress diacritic in Grades 2 to 4. Ninety children read 108 pseudowords presented without or with a diacritic either in the same or in a different position relative to the source word. Half of the pseudowords resembled the words they were derived from. Results showed that lexical sources of stress assignment were active in Grade 2 and remained stronger than the diacritic through Grade 4. The effect of the diacritic increased more rapidly and approached the lexical effect with increasing grade. In a second experiment, 90 children read 54 words and 54 pseudowords. The pattern of results for words was similar to that for nonwords suggesting that findings regarding stress assignment using nonwords may generalize to word reading. Decoding of the diacritic does not appear to be the preferred option for developing readers. 相似文献
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This article presents the original model of the computer adaptive testing and grade formation, based on scientifically recognized theories. The base of the model is a personalized algorithm for selection of questions depending on the accuracy of the answer to the previous question. The test is divided into three basic levels of difficulty, and the student automatically goes from one level to another according to the current level of the knowledge that he shows. Such examination creates an image to the student that the test was set up just for his level of knowledge. On the basis of responses, by applying Bayes’ theorem and the Maximum a posteriori approach, the evaluation grade is formed. In fact, based on empirical probability values, which correlate with obtaining of a certain final grade and the accuracy of answers to each question individually, model creates a score that corresponds to the current level of student’s knowledge. After each test answer, the empirical probability value is updated. That further contributes to the statistical stability of the evaluation model. Testing stops when the student answers the minimum number of questions, determined by a teacher, or, when evaluations show a clear convergence towards a single value. The research method and some results of the testing of the hypotheses as well as authors’ conclusions about CAT as a tool for evaluation of students are presented at the end of the article. 相似文献
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Svetlana Nikitina 《课程研究杂志》2013,45(3):251-271
This paper distinguishes among contextualizing, conceptualizing, and problem‐centring as three basic approaches to interdisciplinary curriculum. This typology is based on the type of inquiry that takes place in the classroom. For example, if the guiding epistemology in the interdisciplinary work is that of the humanities, the mode of connecting disciplinary material is likely to be contextualizing, or embedding the facts and ideas in the cultural, historical, or ideological fabric. If the scientific method guides and sets the standard for integration, conceptualizing work typically takes place. Finally, if the spirit and mode of inquiry is that of the applied sciences or creative product‐development, the integrative process will take the form of problem‐based investigation of urgent or tangible issues. Using empirical data from exemplary university, pre‐university, and professional programmes in the US, I describe three integrative strategies and comment on their strengths. This basic typology provides alternative approaches to interdisciplinary material based on the purpose of the class inquiry. In the hands of a good instructor, several interdisciplinary strategies could be used together for mutual benefit. 相似文献
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This article investigates the transitioning process of international Chinese undergraduate students studying in Russia. The paper offers new insights into changes in the expectations and experiences of Chinese students at various stages of their joint educational studies in China and Russia. Drawing on a qualitative study of 20 Chinese undergraduates studying in Russia, the findings of the study indicate that before studying in Russia, most of Chinese students had low expectations about their study programme. However, once they were in Russia, students’ perception of the value of their international education experiences changes through varied opportunities for self-reflexivity in an unfamiliar cultural environment. The study also offers an example of methodological approach useful for researching international students’ experiences, particularly within but not limited to context of Sino-Foreign university partnerships. 相似文献