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排序方式: 共有1042条查询结果,搜索用时 15 毫秒
81.
针对当前地方性工科院校无机化学教学现状,提出应对无机化学进行教学内容和教学方法的改革,并从教学内容、教学模式、创新教育等方面进行了尝试和探索.  相似文献   
82.
现场总线(Fieldbus)是一种全数字化、双向、多站的通信系统。开放性、分散性与数字通讯是现场总线系统最显著的特征。CAN总线是现场总线中比较容易实现、价格低廉的一种.其性能却不比其他现场总线差,在众多领域被广泛应用。基于96单片机控制的现场仪表就是基于CAN总线的现场仪表。概述了现场总线和CAN总线的发展以及技术特点,并给出具体的软硬件设计。  相似文献   
83.
提出了一种用于电化学刻蚀(ECE)分析的可编程高压电源实现方案.利用MAX038作为波形发生器,采用P89LPC936 MCU进行控制.电源的输出频率可达2 kHz,电压峰一峰值可达8 000 V.由于系统采用了MCU控制,提高了电源的输出频率和电压的精度,增强了电源的可靠性,并具有工作数据的记录功能.  相似文献   
84.
Despite the growing interest and importance of pre-service teachers’ cross-cultural experiences, a review of the literature shows that few studies have discussed the international teaching practicum experiences of pre-service teachers from Asian countries. Bridging this gap, this qualitative case study examined the perceptions and experiences of 15 Korean social studies pre-service teachers who participated in an international teaching practicum in the United States. The findings of the study demonstrated that although participants encountered difficulties in speaking a foreign language and adjusting to a different culture, they also gained confidence and self-efficacy by negotiating and actively participating in the teaching and learning process. This international teaching practicum also helped participants promote their own understanding of multiculturalism and their different perspectives of the teachers’ roles, teaching pedagogies, and local education systems. This study offers implications for future multicultural professional development in teacher education and contributes to developing a body of research and scholarship on international teaching practicums from Asian contexts that have, to date, been largely underexplored.  相似文献   
85.
根据现场特点,提出灰色非等间隔优化模型—GM(1,N)-2模型,对机器运行状态进行预测。并根据滨海轮的实测信号,对模型进行了检验。  相似文献   
86.
文章从企业体育的概念、作用入手,采用调查访问、文献资料等研究方法,重点对我国企业体育的发展现状及存在的主要问题进行分析,并提出我国企业体育的发展对策.以期为我国企业体育的发展指明方向,促进企业体育有序、高效地开展.  相似文献   
87.
浅析工业设计的文化理念和我国现代工业设计中文化底蕴缺失、创新不足、变相抄袭、没有形成自己的设计文化等现状,由此提倡将民族文化的精华之一——道家文化的“道法自然”、“天人合一”等理念融入现代工业设计,给现代工业设计注入中国传统文化的基因。道家文化作为传统文化的精华之一,其“道法自然”、“天人合一”、“道常无为,而无不为”等哲学思想可以给现代工业设计以新的灵魂,使之形成自己的文化特征。  相似文献   
88.
Congenital atresia of the left main coronary artery is a rare occurrence, and surgical revascularizationbypass graft is required. We here report a rare case of congenital coronary anomaly in an infant. A 10-month-old male infant was admitted to the hospital with heart failure symptoms. Echocardiographic examinations revealed mitral valve regurgitation and ischemic changes of the anterolateral papillary muscle and chordae. Coronary angiography showed atresia of the left main coronary artery with a severe hypoplastic left anterior descending artery and a circumflex coronary artery. Unfortunately, sudden cardiac arrest occurred after catheterization and the infant did not recover despite of immediate cardiopulmonary resuscitation. Further studies are needed to find a newer diagnostic method to detect coronary anomaly in an infant, and coronary angiography, if necessary, has to be performed very carefully.  相似文献   
89.
The purpose of this study was to assess, evaluate, and compare the competitive advantages of the human resource development systems of advanced countries. The Global Human Resource Development Index was utilized for this study, since it has been validated through an expert panel’s content review and analytic hierarchy process. Using a sample of 34 OECD member countries, the following conclusions were drawn. First, Switzerland, Sweden, and United States ranked top three in order in National Human Resource Development (NHRD) competitiveness and such Nordic countries as Sweden, Finland, Denmark, Norway, and Iceland showed outstanding NHRD competitiveness. Second, thirty-four countries differed significantly in key aspects of supply, demand, environment, and supporting systems of NHRD. Strong, intermediate, and weak groups classified based on NHRD competitiveness significantly differed from one another in all factors of the NHRD system. Third, changes in NHRD competitiveness between 2005 and 2011 did not exhibit specific patterns depending on the level of economic development. Fourth, little changes in NHRD system occurred in a short period of time. The most significant positive changes in NHRD competitiveness were identified in only two cases of Luxemburg (△6) and Poland (△6) among 34 countries. Only striking case of decrease in NHRD competitiveness was Israel (▽6). The findings of this research will be able to assist each country in identifying its strengths and weaknesses in the NHRD system.  相似文献   
90.
该文基于中国学术期刊网以"说明书翻译"为关键词的搜索结果,从论文发表时段、专题分类、理论依托、研究内容四个方面对说明书翻译研究进行了较为系统、全面的归纳和综述,同时也指出了存在的问题,希望能对今后的说明书翻译研究提供一些思路。  相似文献   
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