面向制造的板级电子电路产品多信息模型研究

Most electronics products use PCB to carry electronic circuits. This paper classifies information contained in PCB-based electronic circuits into several models: geometry model, physics model, performance model and function model. Based on this classification, a multi-information model of product is established. A composite model of product is also created based on object-orientation and characteristics of the product. The model includes a 3D geometry model, a physics model with integrated information that can be divided into microscopic and macroscopic information, a generalized performance model and a function model that are from top to bottom. Finally, a multi-unit analysis is briefly discussed.     

以人为本--中小学校长推行新课程的策略

中小学当前推行的新课程正在引起基础教育领域的一系列革命。在这场革命浪潮面前，作为中小学决策者的校长，如何引发广大师生生命激情与智慧的进发，推动素质教育高水平的实施，确实关系着这场革命的成败。本文试从基础教育学校管理的层面分析，认为中小学校长推行新课程的策略应该是：以人为本，依靠教师，支持教师建功立业，关注学生，帮助学生搭建成功的舞台，促进人(学生和教师)的全面发展。     

苯甲酸分子的简正振动与拉曼光谱

利用量子化学软件计算得出了苯甲酸分子的平衡构形,基于这个构形,理论上计算出了苯甲酸分子的简正振动光谱,并与实验测得的结果进行了比较,最后对其简正振动模式进行了全面归属.     

Teachers＇ Opinion Concerning Common Exams Administered in Elementary Schools

The common exams that have been administered in elementary school since 2007-2008 academic year are inter-classes mid-term evaluations. With these exams, measuring the teachers＇ performance as well as revealing the differences among the classes are aimed at. Therefore, evaluating these exams in terms of teachers＇ opinions is essentially important to realize the aim mentioned above. This study aims to get the teachers＇ considerations on common exams, if any, to determine the problems and their solutions related with common exams. Case study, one of the qualitative research methods, has been used in this research. The research group is consisted of 60 teachers working in a variety of elementary schools in Ankara province in 2009-2010 academic year. The interview form, prepared by the researcher, was administered to elementary school teachers in research group. The interview form was structured to explore teachers＇ views on common exams by using five questions. The content analysis was used in order to analyze, sort and quantify the written and verbal data. At the end of the study, it is stated that according to the teachers, the purpose of the common exams is to state the level of classes and the cooperation between classes and to determine whether the objectives of the courses has been achieved. It is concluded difficulties in giving lectures synchronously in school, non-existence of cooperation between teachers and having difficulties during the preparation of the exam questions are the main problems, which teachers faced with. Teachers participated in the interviews emphasized the advantages of the common exams rather than disadvantages of it.     

高职艺术设计专业基础课改革的探讨

在艺术设计教学中,存在着专业基础课与专业设计课脱节、重技能轻创意等问题。这种情况,已明显不符合整个设计教学和时代的要求。面对当前设计专业知识更新之快,要培养与时俱进的设计师,就必须改革专业基础课教学,重视学生创新思维的开发。     

数学与美

在知识,能力、素质三者辩证统一结合起来的新教改的要求．为培养学生的分析,综合逻辑推理的能力．激发学生学习数学的兴趣。教师应从各方面设计、研究．改进和实践中,让学生在现象中感悟和学习知识。     

利用有限仿射几何的m-面构作结合方案和PBIB设计

取有限仿射几何AG(n,F_q)中的m-面(0相似文献   

The Effects of a Kit-Based Science Curriculum and Intensive Science Professional Development on Elementary Student Science Achievement

The science achievement of 226 5th graders from districts that have a kit-based inquiry science curriculum supported by intensive professional development (PD) is compared with data from a group of 173 5th graders from other districts that use nonkit science materials and do not have systematic science PD for teachers. Within the kit-based project, the sample of project teachers is stratified to select teachers with a high number of science PD hours versus those with few hours. While there were no significant differences in the mean total scores for kit-based students with low PD versus high PD teachers, the kit-based classrooms scored significantly higher than students in nonkit classrooms on both the pretest and posttest, though there were significantly more minutes of science instruction in the nonkit classrooms. Finally, nonkit teachers taught more units of shorter length and reported lower levels of preparedness to use reform pedagogical approaches.