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P波段雷达天线室外远场测试 被引量:2
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作者 张译芡 《现代电子技术》 2011年第1期67-69,共3页
为了设计一个适用于P波段雷达天线测试的天线测试场,针对P波段雷达天线在室外远场测试时较难控制的地面反射问题,采用几何光学方法,结合具体实例,对斜距场法、等高场法、脉冲测试法和地面反射场法几种室外远场测试方法进行了分析;根据... 为了设计一个适用于P波段雷达天线测试的天线测试场,针对P波段雷达天线在室外远场测试时较难控制的地面反射问题,采用几何光学方法,结合具体实例,对斜距场法、等高场法、脉冲测试法和地面反射场法几种室外远场测试方法进行了分析;根据分析结果并结合实际地形条件,选取了地面反射场法作为测试方案;应用FEKO软件对测试场静区处的幅度和相位进行了仿真,得到该场地静区处的合成场能够满足天线远场测试要求的结论。 展开更多
关键词 P波段 测试 斜距 等高场 脉冲测试 地面反射
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Employability Skills Needed by Higher Vocational Education Graduates to Be Successful in the Workplace 被引量:1
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作者 I Made Suarta 《Chinese Business Review》 2012年第7期639-648,共10页
The current issues in workforce development are on high competence not only in technical skills, but also in non-technical skills. The term of non-technical skills is also called as employability skills. The research ... The current issues in workforce development are on high competence not only in technical skills, but also in non-technical skills. The term of non-technical skills is also called as employability skills. The research with topic analysis and development ofemployability skills of polytechnic students aims to: describe supervisors' perceptions of the importance of the employability skills needed in the workplace; describe supervisors' perceptions of the students' level of competence at performing the employability skills; and find the attributes of employability skills that are need to prioritize for development. Research sample has been selected by using a stratified random sampling from the supervisor of last year students when they are on the job training in industry. Total 146 supervisors participated in this research. The Employability Skills Questionnaire with a five-point Liken scale was used to assess perceptions level of importance of identified employability skills and students' level of competence. Data were analyzed by descriptive statistics, means and standard deviations, and priority development analysis. Three main groups of the employability skills with highest important level are: workplace health and safety, self-management, and team working. Students have a high level of competence in occupational health and safety, self-management and learning skills. There are three attributes of employability skills in high priority category for developed: knowing the benefits of computer application programs are needed in the work, taking the initiative in organizing activities, and participating in learning activities to gain new experience. 展开更多
关键词 employability skills higher vocational education workforce development
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Second Language Repertoires Reflecting on Teaching IsiXhosa to Medical Students
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作者 Somikazi Deyi 《Sino-US English Teaching》 2014年第3期159-164,共6页
The Language Policy for Higher Education (2002) and University of Cape Town's Language Plan (2001) suggest that language is central to our social and academic engagement at every level: to our communication with... The Language Policy for Higher Education (2002) and University of Cape Town's Language Plan (2001) suggest that language is central to our social and academic engagement at every level: to our communication with those around us, to our learning, and to our identities. The purpose of this paper is to show how the medical school, after making progress towards implementing the University of Cape Town's Language Plan of 2001, is compelled to encourage isiXhosa language developers to develop the necessary and relevant vocabulary responding to the needs of the target users. In some cases, there is a need to adopt terms that are already available and being used by the speech community to align them in the curriculum. Research conducted by analyzing field notes, having plenary discussions with students, observations during clinical practice, reflecting on the curriculum and study materials material. Results indicated the significance of teaching isiXhosa drawing from the medical jargon understood amongst patients, doctors, and nurses. This paper discusses the status enjoyed by isiXhosa to date, language teaching and teaching matters pertaining to isiXhosa, and reflection on whether there is benefit in learning isiXhosa. 展开更多
关键词 second language learning home language communication medical jargon
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Characteristics of fulvic acid by high voltage pulse discharge plasma
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作者 ZHANG Sheng-hua ZHANG Kui WU Chun-du 《Journal of Chemistry and Chemical Engineering》 2009年第1期13-17,60,共6页
High voltage pulse natural organic matter (NOM) toxic by-products. Fulvic acid discharge plasma can remove and produce no production of solution was treated by high voltage pulse discharge plasma in this paper. It w... High voltage pulse natural organic matter (NOM) toxic by-products. Fulvic acid discharge plasma can remove and produce no production of solution was treated by high voltage pulse discharge plasma in this paper. It was shown that: for the reason of thermolysis and oxidation, the pH and Oxidation Reduction Potential (ORP) of solution decreased gradually with the increase of peak voltage and fulvic acid solution concentration, meanwhile the temperature and turbidity of solution increased gradually. Adding hydrochlorid acid in the treatment could amplify the effect of plasma. When the concentration of NOM as the surrogate parameter, Ultraviolet Absorbancy Degree (UV254) increased slowly by the effect of plasma, while the degradation of Total Organic Carbon (TOC) was first-order reaction. The removal rate of TOC increased from 22.6% to 33.4% by high voltage pulse electrical field of 35 kv, and from 25.6% to 36.7% with the addition of hydrochlorid acid. This paper may provide some basis for the scale-up design of water treatment process by high voltage pulse discharge plasma with other technologies. 展开更多
关键词 fulvic acid high voltage pulse discharge plasma UV254 TOC removal
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