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1.
ZOU Lian-ying ZOU Xue-cheng 《浙江大学学报(A卷英文版)》2006,7(4):591-596
INTRODUCTION With the development of Ethernet systems and the growing capacity of modern silicon technology, embedded communication networks are playing an increasingly important role in embedded and safety critical systems. Advances in VLSI technology have also pushed integration to the point where it is now possible to design and implement a microprocessor and network controller on a single chip, known as System-on-Chip (SoC). In a network of embedded systems, each system can communi… 相似文献
2.
Linda M. Northrop 《Computer Science Education》2013,23(1):5-12
The object‐oriented model has become exceedingly attractive as the best answer to the increasingly complex needs of the software development community. The initial boasts regarding quality, reuse, concurrency, and scalability are now being substantiated by documented software development experience. It is certainly appropriate, then, for educators who teach computer science (the current preparation for emerging software developers) to examine where object‐oriented development best fits into the computer science curriculum. How much of the paradigm‐‐language, analysis, design, management‐‐ought to be addressed? At what level in an undergraduate program are object‐oriented techniques appropriate? What are the risks involved? How is the object‐oriented approach effectively taught?. 相似文献
3.
Student mental health and well-being are increasing concerns in higher education. This exploratory study examined students’ learning in a mindfulness programme incorporated into an undergraduate class. Six brief mindfulness-based practices were introduced: mindfulness meditation, walking meditation, body scan, mindful eating, loving-kindness and Tonglen meditation. Fourteen students were interviewed after completion of the course to explore their conceptions and use of mindfulness and other self-care practices. Results of thematic analyses suggest that there were variations in students’ adoption of mindfulness-based practices and students’ preferred mindfulness techniques. Most participants reported that mindfulness instruction and practice were beneficial but this was not universal; some students reported that mindfulness was ‘not for them’. Findings suggest that mindfulness fostered self-reflection, self-awareness and relaxation for many students and incorporating mindfulness at the beginning of class improved the overall quality of discussion and facilitated students’ learning. Findings further suggest that students incorporated mindfulness into existing self-care practices that included a variety of other preferred techniques to enhance self-reflection, self-awareness and relaxation. Overall, our findings suggest that students should be helped, through explicit instruction, to develop a ‘toolbox’ of self-care approaches that may include, but are not necessarily limited to, mindfulness techniques. 相似文献
4.
Peer-to-peer (P2P) systems are now very popular. Current P2P systems are broadly of two kinds, structured and unstructured. The tree structured P2P systems used technologies such as distributed hash tables (DHT) and hierarchical clustering can search the required target quickly, however, in a tree, the internal node has a higher load and its leave or crash often causes a large population of its offspring's problems, so that in the highly dynamic Internet environment the tree structure may still suffer frequent breaks. On the other hand, most widely used unstructured P2P networks rely on central directory servers or massive message flooding, clearly not scalable. So, we consider both of the above systems' advantages and disadvantages and realize that in the P2P systems one node may fail easily, but that when a number of nodes organized as a set, which we call "super node", the set is robust. Super nodes can be created and updated aware of topology-aware, and used with simple protocol such as flooding or "servers" to exchange information. Furthermore the entire robust super node can be organized into exquisite tree structure. By using this overlay network architecture, P2P systems are robust, efficient, scalable and secure. The simulation results demonstrated that our architecture greatly reduces the alteration time of the structure while decreasing the average delay time, compared to the common tree structure. 相似文献
5.
XU Ding hua . Department of Mathematics College of Sciences Shanghai University Shanghai China . Department of Computational Sciences Systematic Engineering East China Geological Institute Linchuan Jiangxi Province 《上海大学学报(英文版)》2000,(4)
1 Ｉｎｔｒｏｄｕｃｔｉｏｎ Ｗｅｃｏｎｓｉｄｅｒａｎｉｎｉｔｉａｌ/ｂｏｕｎｄａｒｙｖａｌｕｅｐｒｏｂｌｅｍｆｏｒｔｈｅｈｅａｔｃｏｎｄｕｃｔｉｏｎｅｑｕａｔｉｏｎｕｔ(ｔ ,ｘ) =Δｕ(ｔ ,ｘ) , 0 <ｔ <Ｔ ,ｘ∈Ω ,ｕ(ｔ ,ｘ) =0 , 0 <ｔ<Ｔ ,ｘ∈ Ω ,ｕ(θ ,ｘ) =ｕ0 (ｘ) , ｘ∈Ω ,( 1)ｗｈｅｒｅΩ Ｒｎｉｓａｂｏｕｎｄｅｄｄｏｍａｉｎｗｉｔｈｔｈｅｓｍｏｏｔｈｂｏｕｎｄａｒｙ Ω ,ΔｉｓｔｈｅＬａｐｌａｃｉａｎｏｐｅｒａｔｏｒ ,ａｎｄθ∈( 0 ,Ｔ)ｉｓａｆｉｘｅｄｉｎｓｔａｎｔ.Ｗｅａｓｓｕｍｅ… 相似文献
6.
Michelle Rowbotham Monica Cuskelly 《International Journal of Disability, Development & Education》2011,58(3):223-240
To date, there have been few studies of mothers’ and fathers’ roles in caring for their adult children with intellectual disabilities. The present study investigated the care-giving roles of mother and father couples caring for their adult offspring with an intellectual disability, their psychological health, and the demands and satisfaction of their care-giving roles. Twelve Anglo-Australian middle-aged mother and father couples with an adult child with intellectual disability (mean age?=?24 years) participated in semi-structured interviews about their care-giving roles and completed a series of questionnaires pertaining to care-giving difficulties and satisfaction, hassles and uplifts, and general health. Findings indicated that an extremely high proportion of both mothers and fathers were in the clinical range for social dysfunction, anxiety/insomnia, and somatic complaints, although levels of depression were relatively low. The present study found that mothers undertake more daily care-giving tasks than fathers, but that the range of tasks is similar. Mothers also reported significantly more care-giving difficulties and satisfaction than fathers. Associations between measures differed somewhat for the two parent groups, indicating the need for further exploration of both mothers’ and fathers’ experiences. 相似文献
7.
Ding-hua Xu 《上海大学学报(英文版)》2000,4(4):284-287
This paper deals with a parabolic system in a multi-dimentional bounded domain Ω⊂R
n with the smooth boundary δΩ. We discuss an inverse parabolic problem of determining the indirectly measurable internal heat distribution at any intermediate
moment from the heat distribution measurements in arbitrary accessible subdomain ω⊂Ω at some time-interval. Our main result is the Holder stability estimate in the inverse problem and the proof is completed
with a Carleman estimate and a eigenfunction expansion for parabolic equations.
Supported by the Natural Science Foundation of Jiangxi Province Government (981102) and the Natural Science Foundation of
Shanghai Municipal Commission (99ZA14030) 相似文献
8.
Solari Mariana Vizquerra María Isabel Engel Anna 《European Journal of Psychology of Education - EJPE》2023,38(3):1073-1109
The lack of alignment between, on the one hand, what schools seek to teach and, on the other, the students’ interests and learning objectives is leading to increasing numbers of students who are unable to derive meaning from school activities. Personalized learning strategies represent one of the most powerful ways to help students attribute meaning and personal value to their learning. This paper has two interrelated objectives. The first is to present a guide to the analysis of educational practices that work with and from students’ interests. This tool makes it possible to identify the potential of practices to reinforce and promote the meaning and personal value that students attach to their school learning. The guide is structured around three large blocks (personalization strategies, conceptions of interests, and design and development of practices), which describe the dimensions, subdimensions, questions, and levels for the analysis. The second objective is to illustrate use of the guide by analyzing two practices designed and implemented in primary school classrooms, characterized by a focus on students’ learning interests. The paper concludes by highlighting the main contributions of the guide presented, identifying some limitations, and pointing to future lines of research.
相似文献9.
Advances in the development of the Internet infrastructure can be used within developing countries to enhance the delivery of high quality education to their citizens. The mechanisms used to deliver educational material, over the Internet, range from the very sophisticated Virtual Classrooms (VCs) in which students in cyberspace interact in near real‐time with instructors at remote sites, to the basic non real‐time delivery of lecture contents. In Caribbean territories where the concentration of high‐quality teachers and teaching facilities are in and around urban cities, VCs can be used to enhance the access of students in remote areas to the materials, experiences, and facilities provided at the urban centers. We present a model for virtual classrooms, which is specifically geared toward Caribbean territories. This model leverages the usage of alternative low‐cost technology to offer VC environment to teaching institutions in remote rural districts via the Internet. 相似文献
10.
John Fien 《Environmental Education Research》2000,6(2):179-192
This article analyses Education for the environment: a critique' (Jickling & Spork, 1998). It illustrates ways in which the critique is a partial analysis of education for the environment. Thus, the article addresses Jickling and Spork's concern that education for the environment is a universalising discourse that seeks to marginalise other approaches. It does this by showing how it may be Jickling and Spork's lack of reflexivity over their own ideology of education which leads them to construct such a partial interpretation of education for the environment. This article also argues that the critical pedagogy of education for the environment provides a professionally-ethical way of teaching which contrasts with the allegations of indoctrination in the critique. The article nevertheless reflects an appreciation of the opportunity to engage constructively with contesting ideas in environmental education and concludes with suggestions for further avenues of inquiry for those wishing to engage in discourse analysis in order to deconstruct and, hopefully, reconstruct, education for and also in/through, with and about the environment. 相似文献
11.
It is increasingly recognised that attention should be paid to investigating the needs of a new test, especially in contexts where specific purpose language needs might be identified. This article describes the stages involved in establishing the need for a new assessment of English for professional purposes in China. We first investigated stakeholders’ perceptions of the target language use activities and the necessity of the proposed assessment. We then analysed five existing tests and six language frameworks to evaluate their suitability for the need of the proposed assessment. The resulting proposal is for an advanced-level English assessment capable of providing a diagnostic evaluation of the proficiency of potential employees in areas of relevance to multinationals operating in China. The study has demonstrated the value of following a principled procedure to investigate the necessity for and the needs of a new test at the very beginning of the test development. 相似文献
12.
Education for Sustainable Development (ESD) has been recently recognized as an important area in the new Chinese educational reform. As teachers play a pivotal role, knowing and developing an effective and easy-to-use instrument for tapping teachers’ beliefs is essential. This article reports an attempt to develop an instrument with mixed methods. The finalized instruments comprise two subscales with satisfactory reliability indices obtained. Sustainability values (VSD) consists of four dimensions: respect and care for the community of life; ecological integrity; social and economic justice; and democracy, nonviolence, and peace. Teaching beliefs of ESD (TESD) consists of three dimensions: relevance to daily life; students’ need in the future; and integrated teaching. With these validated instruments, future research and potential problems will be less strenuous. 相似文献
13.
1 The Acquisition and Leading of FOreign languagePeOPle learn langUage in twO ways: learning and acquisition.1. 1 ~lug of FOreign langUageForeign language l~ing refers to consciously learning and trying to remember words, Pronunciation,and grammar, consciouSly practising Sentence struCtures, analizing sentence Patterns and text OrganiZ8tion,etc. UP to now, most of teachers of foreign langUage Still follow this way in classroom.Learning a foreign language reSults in l~eres' understandi… 相似文献
14.
The ability to self‐reflect is widely recognized as a desirable learner attribute that can induce deep learning. Advances in computer‐mediated communication technologies have led to intense interest in higher education in exploring the potential of digital tools, particularly digital video, for fostering self‐reflection. While there are reports pointing to the salutary effects of digital video on learners’ reflective ability, a systematic inquiry into how digital video can be utilized to promote self‐reflection in an ePortfolio context remains under‐reported. In this paper, we pose two questions: (1) Do students have the confidence to create their own digital videos for reflection and do they find this activity relevant to their learning needs?; and (2) To what extent does digital video affect the level of self‐reflection and the nature of peer feedback? Results from this small‐scale exploratory case study provide evidence in support of video use as a reflective tool in an ePortfolio context and highlight the need for considering pedagogical and technological issues that are of significance for teachers, educators and ePortfolio developers. 相似文献
15.
The article provides an overview of the global economic landscape in which the contemporary skills development discourse is located. Effective skills development oriented to market needs and to competitiveness in high-value global value chains will help developing economies to avoid the middle income trap. It outlines major issues and challenges that developing economies need to deal with in crafting appropriate policies and strategies for skills development: addressing the persistent problem of skills-jobs mismatches, strengthening the participation of the private sector to increase market-oriented training, assuring inclusive growth, preparing for the expansion of green economy opportunities, and increasing emphasis on soft skills. It also provides an introduction to the various articles in the special issue. 相似文献
16.
17.
Yiannis Giossos Maria Koutsouba Ilias Mavroidis 《The American journal of distance education》2016,30(2):98-108
An instrument was developed to assess the perceived learner–teacher transactional distance in the context of the Hellenic Open University and to provide psychometric evidence of reliability and validity of the interpretation of the scores derived from the scale. First, an elicitation study gathered information on students’ beliefs and feelings about their teachers’ behavior. Two dimensions of learner–teacher transactional distance, namely, co-understanding and awareness, were revealed. Then, an item pool was developed and the preliminary questionnaires (one for each dimension) were field tested on 60 postgraduate students who commented on their clarity. Reliability and validity were then tested using exploratory and confirmatory factor analysis with two samples of 220 and 201 postgraduate students. The confirmatory factor analysis results indicated good model fit for the dimensions of co-understanding and awareness. Univariate F tests showed no significant difference between males and females for (a) co-understanding of cognitive skills and aptitudes, (b) co-understanding of emotional state, (c) awareness of cognitive skills and aptitudes, and (d) awareness of emotional state. A final questionnaire included ten items for the co-understanding dimension and fifteen items for the awareness dimension. 相似文献
18.
A two-layer method based on support vector machines （SVMs） has been developed to distinguish epoxide hydrolases （EHs） from other enzymes and to classify its subfamilies using its primary protein sequences. SVM classifiers were built using three different feature vectors extracted from the primary sequence of EHs： the amino acid composition （AAC）, the dipeptide composition （DPC）, and the pseudo-amino acid composition （PAAC）. Validated by 5-fold cross tests, the first layer SVM classifter can differentiate EHs and non-EHs with an accuracy of 94.2% and has a Matthew＇s correlation coefficient （MCC） of 0.84. Using 2-fold cross validation, PAAC-based second layer SVM can further classify EH subfamilies with an overall accuracy of 90.7% and MCC of 0.87 as compared to AAC （80.0%） and DPC （84.9%）. A program called EHPred has also been developed to assist readers to recognize EHs and to classify their subfamilies using primary protein sequences with greater accuracy. 相似文献
19.
Simone White 《师资教育杂志》2019,45(2):200-213
Teacher educators are an occupational group currently experiencing increased scrutiny by international policy makers and researchers alike. This occupational group however is increasingly difficult to define and identify in a complex, internationally changing teacher education policy reform environment. The question posed is an enduring one: who is a teacher educator? The answer is more complicated. To better understand this occupational group, a literature review and local policy analysis study using the Australian context was conducted to reveal more about their identity; career trajectories and; professional learning needs. Analysis revealed that three sub-groups belonging to the broader teacher educator occupational group have emerged as a result of shifting teacher education policies. Namely, university-based; school-based and community-based teacher educators, each with an important role to play and each positioned differently within the research and policy landscape. Findings suggest that all three groups are important to educating teachers across their career and to best meet the needs of all students for new times. Recommendations are made for future research and practice into how these groups can work collectively together, within and across the multiple sites of learning to teach. 相似文献
20.
In Experiment 1, 201 college students read both a literary and a technical text either in an advance organizer condition or a non-organizer control condition. Results failed to support the hypothesis that an organizing schema would help subjects with good reasoning skills compensate for poor memory skills or information overload caused by speeded reading conditions. In Experiment 2, data from a sample of 189 college subjects demonstrated that real-world distractions do cause significant learning decrements but failed to support predictions that an organizer would aid distractible students and would compensate for distracting study conditions. Findings suggest that the organizer technique does not help compensate for processing deficits related to information overload or distracting study conditions. 相似文献