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101.
针对隐藏人体目标出现在偏离雷达视角的其它不同的位置或在检测过程中存在身体的偏移等情况使得回波非常微弱甚至没有,导致检测失效的问题。为此,在多发多收(MIMO)雷达体制的基础上提出一种多通道雷达检测方法,将天线放置在合理的位置,以确保人体回波信号能够被检测到。通过对每一通道回波信号预处理,并将所有通道的预处理结果进行小波图像融合和恒虚警(CFAR)处理实现隐藏人体目标的准确检测与定位,这样不仅提高回波信号的信噪比,还增加了雷达探测视角和距离。实验结果表明,该方法能够有效提高人体呼吸微动频率和位置的检测精度,优于传统的单站雷达检测方法。  相似文献   
102.
高校财务信息化风险研究   总被引:2,自引:0,他引:2  
在信息技术广泛运用于高校财务工作的背景下,如今的高校财务与原来的手工记账相比,在效率显著提高的同时,其风险存也大大增加,高校财务应有相应的防范措施。高校财务信息化风险防范应从风险威胁者主体角度,采取相应的思路与对策,以降低财务信息化风险,减少损失。  相似文献   
103.
对校园网的《体育与健康》课程CAI课件系统的设计方案进行了分析,并对其中关键技术的实现进行了论述。  相似文献   
104.
为充分利用港口既有的建设规模、提高经济效益,对集装箱码头的泊位分配进行研究.采用神经网络和聚类分析两种数据挖掘技术分析相关数据,得到相应的数据挖掘模型.先通过反向传播(Back Propagation,BP)神经网络分析各因素对泊位分配的影响程度,确定出主要因素;然后通过聚类分析中的两步聚类算法进行分析;最终制定集装箱码头泊位分配策略.该方法可为提高集装箱码头生产效率提供帮助.  相似文献   
105.
USING STRUCTURE INFORMATION TO GUIDE DIAGNOSIS   总被引:2,自引:0,他引:2  
为了快速得到“模型诊断”中的最优测量点,建立了系统的二值模型;它只包含候选故障元,且它们的因果关系与原系统保持一致,然后,利用结构信息区分候选诊断.这种方法可看成是期望熵法的极值结构特征提取.直接适用于连续或离散系统.这样可以采用“对分法”在O(N2)时间内给出一个优化测量点.  相似文献   
106.
高校建立内审制度,强化内审监督,应在“规范”上下功夫,坚持从热点、重点问题入手,从管理的要害部位入手,拓宽思路,创新监督手段,确保审计监督的职责落实到位。  相似文献   
107.
This paper explores three influences on the effectiveness of teacher professional development for improving schools – the individual teacher, the learning activities in which teachers participate and the structures and supports provided by schools for teacher learning. It does so by relying on survey data collected for a national study of teacher professional development in England. The analysis indicates that while the professional development of teachers in England is generally ineffectual and lacks school level systems and supports, the professional development and supports for professional learning by teachers in high performing schools display many of the characteristics associated with effective professional learning. Given the results showing a link between school factors and professional learning and the lack of influence of individual teacher factors, the paper concludes that the previously reported importance of school capacity in influencing learning and improvement is supported by the findings.  相似文献   
108.
Teachers are encouraged to enhance professional competence through reflective practice and they are also asked to undertake research to generate evidence for their professional practices. This paper reports on an inquiry into a group of primary school English language teachers’ research engagement in the province of Guangdong on the Chinese mainland. The inquiry explored the effect of educational reforms on the participants’ research engagement through the use of an open‐ended questionnaire and group interviews. The inquiry revealed that research engagement had become an important part of the teachers’ professional lives. Emerging findings from the inquiry also problematised their research engagement as it was found to have been undermined by a competitive promotion mechanism, the teachers’ conceptualisations of research and challenges in the knowledge dissemination process. The paper ends with reflections on how to make teacher research “educational” for teachers and serve as an effective way for professional development.  相似文献   
109.
基于工作过程的《报关实务》课程教学改革   总被引:1,自引:0,他引:1  
文章分析《报关实务》课程特点和目前教学现状,根据基于工作过程为导向的教学方法,在分析《报关实务》课程知识体系的基础上,确定知识技能点,探讨基于工作过程为导向的《报关实务》课程教学改革,建立相适应的教学模式。  相似文献   
110.
Team-based learning (TBL) strategy is being adopted in medical education to implement interactive small group learning. We have modified classical TBL to fit our curricular needs and approach. Anatomy lectures were replaced with TBL that required preparation of assigned content specific discussion topics (in the text referred as "discussion topics"), an individual self-assessment quiz (IRAT), analysis of the discussion topics, and then the team retaking the same quiz (GRAT) for discussion and deeper learning. Embryology and clinical correlations were given as lectures. Unit examinations consisted of graded IRAT and GRAT. The National Board of Medical Examiners (NBME) Subject Examination was the comprehensive final examination. To evaluate the effect of TBL on student performance we compared the departmental and NBME subject examination scores between the traditional and TBL curricula. We collected five years of data on student performance in TBL-based anatomy and lecture-based preclinical courses. Our results show that departmental and NBME subject examination scores for TBL-based anatomy were higher than those for lecture-based anatomy. We subsequently compared average NBME scores for anatomy with those in other preclinical courses that were lecture-based. Average NBME anatomy scores were significantly higher than those for all the lecture-based preclinical courses. Since the introduction of TBL in anatomy, student performance has progressively improved in the NBME subject examination. Students perceived TBL as a motivator to be a responsible team member and to contribute to collective learning by the team. Further, it reinforced self-directed learning and fostered an appreciation for peer respect. Interestingly, these perceptions were uniform irrespective of student course performance.  相似文献   
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