车用自励式缓速器的工作原理及其使用

文章介绍了一种新型的缓速器--车用自励式缓速器,这种缓速器可以消除、减小以往辅助制动装置的缺点,综合了其它缓速器的优点:质量最轻,体积最小且具有可调性;同时该缓速器具有自发电功能,无须增加或加大汽车发电机和蓄电池;它还可以把汽车的惯性转化为制动力矩来克服惯性,从而节省能量,减少磨损,而这些是其它类型缓速器不能与其相比的.本文详细介绍了自励式缓速器的结构和工作原理,分析了其安装和使用方法,最后比较了自励式缓速器的优越性.     

求逆矩阵的若干方法

本文在求逆矩阵的常用方法上提出了另外三种求某些逆矩阵的方法，详细介绍了应用分块矩阵求某些特殊逆矩阵的若干方法，并给出相应的例子，其解法思路更简洁。供学习有关矩阵方面的读者参考。     

思想政治教育融入大学生创新创业教育的路径

全球正孕育着新一轮科技产业变革,在中国经济发展形势从要素驱动、投资驱动转向创新驱动的国家战略背景下,大学生创新创业教育深度探索与发展将成为重要的研究内容。在分析大学生创新创业教育现状和阻滞因素的基础上,阐明了创新创业教育过程中融入思想政治教育的必要性和着力点,提出了构建思想政治教育融入创新创业过程的路径和方法,实现大学生创新创业教育与大学生课程教育、思想政治教育、第二课堂教育、校企实践平台体系的协同育人机制。     

Simulation of scattering in dense medium by Monte Carlo method

We present a Monte Carlo （MC） method to simulate the scattering for medium within randomly distributed particles, discuss the convergence of this method by varying the size parameter ka. volume parameter η and calculation parameter Ni, then compare this method with the classical iteration method with the same parameters. The calculation results showed that this method has good convergence and accords with the iteration method while consuming less CPU time. At the end of this paper, this method is used to discuss the visual light scatter in the c-Si/α-Si films.     

几何非可展异型盒形件拉深毛坯近似展开计算

提出了一种映射变换方法:在分析传统拉深件毛坯尺寸计算方法的基础上.建立异型盒形件的毛坯近似展开的计算模型.利用微分几何中的诱导映射理论求得非可展曲面到平面城内的变换关系.分析该变换关系的简化算法,以一换挡板拉深件为实例验证了该算法的有效性.结果表明,该算法与传统毛坯计算方法相结合,可以获得符合生产的毛坯尺寸和形状,对异型盒形件的毛坯展开计算具有普适意义.     

龙泉廊桥文化资源的保护和开发措施

全文介绍了浙江省龙泉市廊桥资源的基本分布情况,通过与邻省邻县、市廊桥保护和开发经验的类比分析,提出了龙泉廊桥资源保护和开发的系列具体措施。     

论科技文稿编辑加工的"度"

论述科技期刊文稿编辑加工"度"的问题.提出科技文稿的编辑加工可分为浅度加工、适度加工、深度加工和过度加工等4种加工的概念.认为科技期刊编辑加工中要避免浅度加工和过度加工,应根据文稿的质量和水平采取适度加工或深度加工的方法,以确保科技期刊的质量.     

Systematic studies on scan and driving model for flat panel display

Aiming at the time redundancy in the flat panel display (FPD) imaging process, the paper studied some problems for FPD gray scale controlling based on the fractal theory, dissertates the construction of the space-time mapping topology architecture, the proposition of optimal scanning structure for FPD’s gray imaging, and the creation of the fractal theoretic model. Then the logic implementation and system application are presented based on the fractal model of the optimal scan architecture, and the application results achieved target of eliminating time redundancy and increasing the scanning availability. The novel control mode that the fractal scanning IP core described with Verilog language embedded in the FPGA hardware frame can efficiently increase the imaging gray scales and quality in the FPDs scanning controller and speed up the frame frequency of display system.     

MEASURING EFFICACY SOURCES: DEVELOPMENT AND VALIDATION OF THE SOURCES OF TEACHER EFFICACY QUESTIONNAIRE (STEQ) FOR CHINESE TEACHERS

The aim of the current study is to develop and validate an instrument to measure the four sources of teacher efficacy among Chinese primary school teachers. A 26‐item Sources of Teacher Efficacy Questionnaire (STEQ) was proposed with four subscales: mastery experience, vicarious experience, social persuasion, and physiological arousal. The results supported the hypothesized four‐factor structure of the STEQ. Scores from all the four factors of the STEQ had strong significant correlations with the Teachers’ Sense of Efficacy Scale (TSES), which showed the criterion‐related validity of the STEQ. Further, scores of all four sources significantly predicted teacher efficacy scores, among which social persuasion was the strongest predictor. This study contributes to the self‐efficacy literature by providing researchers with an instrument for examining the various facets of teacher efficacy. The findings can inform school principals and teacher educators, enabling them to facilitate a school culture and teaching environment that cultivates a greater sense of teacher efficacy and, in turn, better teaching performance.     

磁场处理水对草鱼血液及鲤鱼红血球溶解的影响

五组草鱼,分别饲养在自制的0.2T、0.3T、0.5T和0.7T磁场处理自来水及未经磁场处理的自来水中。第14天,经静脉窦取血,用Celltrak—Ⅰ型计数仪检测血液五项指标。与对照组比较实验组红细胞压积(HCT)和红细胞平均体积(MCV)无显著性差异;白细胞(WBC)数明显降低,有显著性差异;红细胞(RBC)数和血红蛋白(Hb)浓度在0.3T与0.5T实验组明显低,且差异显著。通过鲤鱼红血球溶血率测定,0.2T和0.3T磁场强度处理水,有明显降低红血球溶血率的作用;0.5T与0.7T实验组又具有明显增强红血球的溶血作用。