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Integration of Computer Assisted Learning in Teaching and Learning in Secondary Schools in Kenya
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作者 Samuel Kigumi Mwangi Hironari Nozaki +1 位作者 Fetsuro Ej ima Kyoko Umeda 《Computer Technology and Application》 2013年第9期505-511,共7页
The purpose of this study was to establish factors that lead to poor integration of Information and communication technology (ICT) for teaching and learning in schools in Kenya, despite comprehensive policy, institu... The purpose of this study was to establish factors that lead to poor integration of Information and communication technology (ICT) for teaching and learning in schools in Kenya, despite comprehensive policy, institutional, infrastructural frameworks and capacity building by the Ministry of Education. The subject of this study was administered by use of questionnaires in three categories of public schools: national school, provincial schools and district schools. The respondents were students from each level that is from one, two, three and four and teachers based on the most offered subjects in the secondary schools. The computer assisted learning facilities were classified into computers, internet and content in optical media. In national school Internet based research, optical media content provided by Kenya Institute of Curriculum Development and Cyber School program for science subjects was used in learning. In provincial school, it lacks adequate computers, reliable Internet and content in optical media. In district school, it lacks adequate computer, no internet connection and content in optical media. A learner management system which can be accessed by all learners by use of any internet access devices like mobile phone access will be an ideal tool with over 4,000,000 mobile phone subscribers currently in Kenya. 展开更多
关键词 Information and communication technology computer assisted learning internet.
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离心泵与管系的共振问题 被引量:2
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作者 李文东 杨嘉 +2 位作者 赫飚 张世彬 高百东 《油气储运》 CAS 北大核心 2011年第7期532-533,472,共2页
针对宁波大榭岛燃料油库消防水泵在负荷试车与运行过程中存在噪声高、振动大、轴温高级填料函处冒蒸气和油烟等问题,运用CAESARⅡ软件的动态分析功能对比分析离心泵的固有频率和管道的振动频率。结果表明:由于泵出口设置了软连接伸缩器... 针对宁波大榭岛燃料油库消防水泵在负荷试车与运行过程中存在噪声高、振动大、轴温高级填料函处冒蒸气和油烟等问题,运用CAESARⅡ软件的动态分析功能对比分析离心泵的固有频率和管道的振动频率。结果表明:由于泵出口设置了软连接伸缩器,使得6台泵出口附近的管系振动频率均与离心泵的固有频率非常接近,导致离心泵与其进出口连接管系产生共振。因此,提出了在设计初始阶段应采取相应措施以避免发生类似问题的建议。 展开更多
关键词 离心泵 连接管系 共振 应力分析 振动频率 固有频率
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Vagus-preserving Merendino-Procedure for Early Carcinoma ofthe Gastroesophageal Junction
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作者 Christian A. Gutschow Wolfgang Schrder 《The Chinese-German Journal of Clinical Oncology》 CAS 2004年第4期226-228,共3页
Optimal therapy for early carcinoma of the gastroesophageal junction remains uncertain. Treat- ment alternatives discussed today reach from endoluminal techniques to radical esophagectomy with 2- or 3-?eld lymphadenec... Optimal therapy for early carcinoma of the gastroesophageal junction remains uncertain. Treat- ment alternatives discussed today reach from endoluminal techniques to radical esophagectomy with 2- or 3-?eld lymphadenectomy. In this context, the Merendino procedure with preservation of the vagal innerva- tion to the stomach appears as an interesting therapeutic alternative. This paper summarizes indications, operative technique, and functional results with respect to postoperative quality of life, based upon 2 cases operated in our department. 展开更多
关键词 ESOPHAGUS CARDIA early carcinoma jejunal interposition Merendino procedure
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