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1.
刘存兰 《漯河职业技术学院学报》2010,9(5):36-37
从典型的机群系统共有的特点和高可用软件结构、机群系统的评价标准、机群系统的优缺点、机群系统有待解决的问题、机群系统的应用五个方面对机群系统进行探讨。 相似文献
2.
颜桂云余勇胜袁宇琴李环辉张东鹏 《福建工程学院学报》2021,(4):307-314
根据远场类谐和地震动、普通地震动反应谱与规范反应谱之间的包络关系,选取输入结构的地震动加速度峰值?建立双柱墩式抗震梁桥,分析同峰值加速度的远场类谐和地震动和普通地震动作用下双柱墩式梁桥主梁、墩柱的地震响应等,揭示远场类谐和地震动作用下双柱墩式梁桥的动力响应与失效机理?采用SR模型模拟双柱墩抗震梁桥墩底的SSI效应,分析远场类谐和地震动作用下梁桥地震响应变化规律。结果表明,远场类谐和地震动对桥梁的地震响应为普通地震动作用的1.5倍以上,其设防烈度至少应提高一度才能保证桥梁的安全?墩-系梁连接点处弯矩随桩土刚度减小而增大,有可能会引起桥墩弯曲破坏。 相似文献
3.
Hsin-Hui Wang Hsiang-Ting Chen Huann-shyang Lin Yu-Ning Huang 《International Journal of Science Education》2013,35(15):2002-2026
ABSTRACTThis longitudinal study explored the effects of a Cooperation-driven Socioscientific Issue (CDSSI) intervention on junior high school students' perceptions of critical thinking (CT) and self-regulation (SR) in Taiwan. Forty-nine grade 7 students were randomly selected as an experimental group (EG) to attend a 3-semester 72-hour intervention; while another 49 grade 7 students from the same school were randomly selected as the comparison group (CG). All participants completed a 4-wave student questionnaire to assess their perceptions of CT and SR. In addition, 8 target students from the EG with the lowest scores on either CT or SR were purposefully recruited for weekly observation. These target students and their teachers were interviewed one month after the intervention in each semester. Analyses of covariance and paired-wise t-tests revealed that the EG students' perceptions of CT and SR in learning science were improved during the study and were significantly better than their counterparts' at the end of the study. Systematic interview and classroom observation results were consistent with the quantitative findings. This study adds empirical evidence and provides insights into how CDSSI can be integrated into planning and implementing effective pedagogical strategies aimed at increasing students' perceptions of CT and SR in learning science. 相似文献
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The concept of structure-soil-structure dynamic interaction was introduced and the research methods were summarized. Based on lots of documents, a systematic summary of the history and current situation of structure-soil-structure dynamic interaction research considering adjacent structures was proposed as reference for researchers. The existing matter and the prospect of future research trend in this field was also examined. 相似文献
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‘We did see the lapwing’ – practising environmental citizenship in upper-secondary science education
This article explores factors that promote the practice of environmental citizenship in science education and aims to contribute to the development of the concept of practising environmental citizenship. We follow six Norwegian secondary students (aged 16–17) participating in a small-scale intervention study conducting an assignment on a socioscientific issue (SSI) in their local district. Our findings reveal that dealing with an SSI in real-world settings through out-of-school activities set in the students’ local district is important for practising environmental citizenship. This article also addresses the tensions between the practice of environmental citizenship and the cultural issues related to school science. Our findings reveal that tensions exist between working with ready-made-science, as students normally do, to deal with science-in-the-making through an SSI. This research discuss the practical implications of the concept of practising environmental citizenship in science. 相似文献
6.
Luree H. Ohigashi Oasay 《College & Undergraduate Libraries》2013,20(4):239-249
One scenario in Website development using practical strategies for the Website administrator who is a nonspecialist is presented. Solid design planning that incorporates simply executed methods robust enough to achieve maintenance efficiency is described with practical examples for libraries facing technical and budgetary limitations. Simple yet powerful complementary Web tools and techniques using Adobe Dreamweaver's Templates and Library Items along with Server Side Include (SSI) statements are explored from start to finish. 相似文献
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In the socioscientific issues (SSI) classroom, students need to cross the border between the subcultures of science (i.e., school science vs. everyday science). Traditional school contexts tend to present science as positivistic knowledge and unshakable truth unaffected by sociocultural factors. In contrast, everyday science, including SSI, is more nuanced, context-based, socially and culturally embedded. Thus, learning in an SSI classroom requires students to make additional efforts to successfully navigate between the subcultures of science. The expected norms located within these two educational contexts can create academic and sociocultural tensions for students. It is therefore necessary to explore the tensions caused these differential norms in order to successfully implement SSI. Through the lens of cultural-historical activity theory, we attempted to identify possible tensions that originate by implementing SSI instruction in a setting where teachers and students are accustomed to traditional lecture-based classroom instruction. One hundred thirty ninth graders at a public middle school located in Seoul, South Korea, participated in SSI programs on genetic modification technology during seven class periods over three to 4 weeks. Data was collected by classroom observation, audio-taping while students participated in various types of discourse, and semistructured interviews. We identified four noteworthy phenomena including intolerance of uncertainty, scientism, a sense of rivalry, and reaching an expedient and easy consensus. By revealing and understanding these tensions and phenomena, we aim to help inform teachers (and teacher educators) recognize instructional clues that can change not only students' epistemological views and attitudes toward science and science classes, but also better navigate the norms of classroom culture. 相似文献
8.
This paper introduces a research agenda to explore the intersection of e-government implementation and the key federal programs – Medicaid, the Supplemental Nutrition Assistance Program (SNAP, a.k.a. food stamps), (SSI), and Temporary Assistance to Needy Families (TANF, a.k.a. welfare) – that provide assistance to low-income citizens in the United States. To lay the groundwork for on-going research, this paper focuses on the implementing statutes that require different levels of automation for delivering these programs to the public. It discusses the programs in terms of their breadth, impacts to recipients, and the effects of automation as implemented for each. It identifies some of the consequences of automation, such as potentially faster service delivery, different approaches to information access, and issues of privacy. It then suggests some points to consider for policymakers and for future research to more deeply understand this unique and little-studied aspect of e-government implementation. By understanding the impacts of implementing statutes on the poor, policymakers can develop a deliberately inclusive strategy that leverages technology to support access to assistance in measurable models that can be implemented at the federal, state, and county levels. This can further democratize the government-to-citizen relationship and support greater accountability to taxpayers. 相似文献
9.
基于Linux集群的并行计算 总被引：4，自引：0，他引：4
王鹏 《喀什师范学院学报》2005,26(3):73-75
简要论述了并行计算机体系结构、并行计算原理，并介绍了Linux集群并行计算平台的建立以及在此平台下的单一系统映像SSI和并行编译环境MPI． 相似文献
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