建设高教强省大力提高高等职业教育质量     

周婷 《扬州大学学报(高教研究版)》2006,10(2):22-25

高等职业教育是高等教育大众化的主力军,建设高教强省必然要对我省高等职业教育提出新的更高的要求,其中最重要的是高等职业教育必须在保证招生数量增长的同时,大力提高教育质量,培养出优秀的职业技术人才。为此,应从加大投资力度、改革专业设置、加强师资队伍建设、强化实践教学环节、建立高等职业教育质量监督评估制度等方面来提高我省高等职业教育质量。  相似文献   

试论训练状态的提高     

贾留启 《淮南师范学院学报》2002,4(3):37-39

阐述训练状态的概念、意义及训练状态形成的规律，讨论训练状态在运动训练中的重要性及基本原理，提出提高训练状态应采用的方法和手段，论述训练状态形成的五大因素及影响训练状态诸因素之间的关系。  相似文献   

表面活性剂Tween80和Tween60对毛头鬼伞胞外多糖产量的影响     

李林辉  李天东  刘婷 《绵阳师范学院学报》2007,26(11):74-76

比较了两种表面活性剂Tween 80和Tween 60对毛头鬼伞菌丝体培养过程中胞外多糖释放的影响。实验结果表明:Tween 80和Tween 60均能促进细胞释放胞外多糖,而以Tween 80较好;在发酵培养基中加入不同浓度的Tween 80时,对毛头鬼伞菌丝体胞外多糖释放的影响不同,加入0.05%Tween 80时,胞外多糖的产量最高,达到31.226g/L,而对照组的胞外多糖产量仅为21.437g/L。胞外多糖的产量比对照组提高了46%。  相似文献   

New Method for Studying Rock-Breaking Mechanism by Disc Cutters     

Jianqin Liu  Huaicheng Bin  Wei Guo  Mengmeng Liu  Xuanbin Jia 《天津大学学报(英文版)》2017,23(2):147-156

Gaining a thorough understanding of the theoretical principles of rock breaking with a disc cutter is a critical issue in tunnel boring machine (TBM) technology. To fully consider the complexity and importance of the basic principles of rock breaking during tunnel excavation, in this paper we use a new method, the smooth particle hydrodynamics (SPH), to study the rock-breaking mechanism and verify its accuracy and feasibility. Using the SPH method, we induce the rock fragmentation process with two cutters in synchronous and sequential orders. The results show that when the cutters act on rock sequentially, the second indentation influences the crack evolution of the first indentation. With increased cutter spacing, the second crack gradually becomes independent of the first crack. Under synchronous action of the two cutters, a bursiform nucleus is generated beneath the cutters and the area of the nucleus increases with increased cutter spacing. Whether the cutters act on the rock sequentially or synchronously, we found the optimum cutter spacing of our chosen rock type to be 60 mm. Our analyses results show that the efficiency of sequential rock cutting is superior to synchronous cutting, both with respect to crack evolution and cutter force.  相似文献   

Educational reforms and the practices of professional learning community in Hong Kong primary schools     

Nicholas Sun-Keung Pang  Ting Wang  Zoe Lai-Mei Leung 《Asia Pacific Journal of Education》2016,36(2):231-247

Abstract

This study explored the characteristics of professional learning communities (PLCs) in Hong Kong primary schools. It investigated the profiles of the strengths of professional learning community in schools under study and particularly examined the practices in schools which were identified as strong PLCs. It extends research on PLCs in the Hong Kong context and formulates a quantitative perspective to compare and validate PLC variables across schools in Hong Kong. The Professional Learning Community Questionnaire (PLCQ) for Hong Kong schools was developed to assess the PLC practices in six different areas: leadership for teacher learning, collaborative learning capacity, student-focused orientation, a culture of sharing, mutual understanding and support, and continuous professional development. A composite construct, the Professional Learning Community Index (PLCI) expressed in quantitative terms was utilized to assess the strength of PLC in a school. The research findings show that within the schools which were identified as strong professional learning communities, both the school leaders and teachers had strong emphases on the six subscales of the PLC practices.  相似文献   

高羊茅组培再生体系建立的研究   总被引：1，自引：0，他引：1  

李志亮  叶嘉  杨杰  吴忠义  王刚 《邯郸学院学报》2006,16(3):60-63

植物组培再生体系的建立是进行基因转化的前提.本文对高羊茅的组培再生体系的建立进行了初步研究.(1)研究了不同的种子灭菌处理方式对高羊茅种子萌发率和污染率的影响,结果显示:高羊茅种子最佳灭菌方式是将种子先在无菌水中浸泡1～3 h,然后用70%酒精灭菌30 s,无菌水冲洗5次,再用50%次氯酸钠灭菌20 min,无菌水冲洗6次.采用此灭菌方式,种子萌发率约为80%,而污染率为0%.(2)将高羊茅下胚轴接种在含有不同浓度2,4-D的MS培养基上进行愈伤组织诱导,结果表明:10 mg/L的2,4-D是下胚轴愈伤组织诱导的最佳浓度,过高的2,4-D浓度对愈伤组织的形成有负作用.(3)将高羊茅下胚轴接种在含有10 mg/L2,4-D的MS、B5、N6培养基上进行愈伤组织诱导,结果表明:3种不同培养基中,MS培养基为最适培养基.  相似文献   

宋代讲摩风气及其对文学的影响     

杨挺 《内江师范学院学报》2007,22(5):48-51

宋代士人群聚之时,性喜讲摩,其间往往有文学技巧的竞技,文学观念的交流。经文人自觉记录下来,则成为论诗的文字记录,诗话显然是其中的重要类型。可见讲摩风气对于文学创作与文学评论具有多方面的影响。  相似文献   

多楔带单根磨削机控制系统的改进     

沈佳 《湖州职业技术学院学报》2006,4(3):92-94

多楔带单根磨削机在调试时,存在步进电机只有正转不能反转的问题。在排除了步进电机驱动器、高速脉冲输出模块等硬件上的问题后,将高速脉冲输出模块设置成单脉冲控制方式,步进电机即可实现正、反转运行;如果程序中磨削进给量的分配是固定不变的,会产生磨削质量达不到要求,磨削效率低等问题。设计中采用磨削进给量和间隔时间都是变化的方法,可在保证产品质量的前提下提高生产效率。  相似文献   

Genetic polymorphism analyses of a novel panel of 19 X-STR loci in the Chinese Uygur ethnic minority     

Yu-xin Guo  Jian-gang Chen  Yan Wang  Jiang-wei Yan  Jing Chen  Tian-hua Yao  Li-ping Zhang  Guang Yang  Hao-tian Meng  Yu-dang Zhang  Ting Mei  Yao-shun Liu  Qian Dong  Bo-feng Zhu 《Journal of Zhejiang University. Science. B》2016,17(5):367-374

The population genetic data and forensic parameters of 19 X-chromosome short tandem repeat (X-STR) loci in Chinese Uygur ethnic minority are presented. These loci were detected in a sample of 233 (94 males and 139 females) unrelated healthy individuals. We observed 238 alleles at the 19 X-STR loci, with the corresponding gene frequencies spanning the range from 0.0021 to 0.5644. After Bonferroni correction (P>0.0026), there were no significant deviations from Hardy-Weinberg equilibrium. The cumulative power of discrimination in females and males, and the probability of exclusion of the 19 X-STR loci were 0.999 999 999 999 999 999 998 091, 0.999 999 999 999 966, and 0.999 999 986 35, respectively. The cumulative mean exclusion chance was 0.999 999 992 849 in deficiency cases, 0.999 999 999 999 628 in normal trios, and 0.999 999 998 722 in duo cases. The high value of the forensic parameters mentioned above revealed that the novel panel of 19 loci had important values for forensic applications in the Uygur group.  相似文献   

XML技术在数据库中的应用     

刘婷  孟庆伟 《漯河职业技术学院学报》2005,4(1):26-27,34

XML已成为网络上对数据进行描述和传送的通用语言，XML数据库应运而生。XML数据库是一种新型的数据库技术，它适合于对半结构化数据的存取管理；它能表示和移植数据，具有集成异构数据库系统的能力。XML技术的这些特殊优势将会对网络信息资源的管理产生重大影响。  相似文献