关于图魔幻标号的运算关系

定义图的全魔幻空间及向量空间。证明了f,g∈P(G),则两标号f与g之间相差一个常数,对任何一个向量α_i∈V_(f_i),如果f_i∈P(G),则α_i可由其余α_(i-1)线性表示。给出了快速大规模地构造魔幻树的方法,得到了奇优美标号、优美标号、魔幻全标号之间相互转换的几个结果。     

项目式教学法应用于EDA本科教学的探索

基于PMBOK原理的项目式教学法是电气电子类课程实践教学的热点.文章首先分析了EDA课程教学的现状及存在的问题,在此基础上将项目式教学法引入到该课程的本科教学中.依此对忻州师范学院电子信息科学与技术专业62名学生进行试点教学,采用专题讲座结合设计项目的实施方法.实践证明,该方法可以很大程度地提高教学效果,培养学生的创新能力.     

中国家族企业人力资源管理存在问题及对策浅析

文章从家族企业人力资源管理过程中存在的问题着手,深入剖析了问题存在的原因,并对家族企业人力资源管理存在的问题提出了有效的应对策略.     

我的管理策略

本文介绍了校长的管理策略,采取的沟通法宝是"校长的短信经".充分挖掘教师的潜能和才智.最大限度地调动其教学的积极性.     

Features of intervertebral disc degeneration in rat’s aging process

Objective: The age-related change is important part of degenerative disc disease. However, no appropriate animal model or objective evaluation index is available. This study aimed to investigate the features of intervertebral disc degeneration in aging process of rats. Methods: 22-month-old Sprague-Dawley (SD) rats were used as spontaneously occurring intervertebral disc degeneration models and 6-month-old rats as young controls. Expression of collagen types II and X was measured by immunohistochemistry. Degenerations of intervertebral discs were scored according to Miyamoto’s method. Numbers and areas of afferent vascular buds were measured. The thicknesses of non-calcified and calcified layers were measured and statistically analyzed. Results: There were less collagen type II expression and more collagen type X expression in the calcified layer of the cartilage endplates and nucleus pulposus in the rats of the aged group than in the young control. There were fewer and smaller afferent vascular buds in the rats of the aged group than in the young control group. The ratio of the non-calcified to the calcified layers in the rats of the aged group significantly decreased, compared with that of the young control group (P<0.01). Conclusion: Rats can spontaneously establish intervertebral disc age-related degeneration. The expression of collagen types II and X, numbers and areas of afferent vascular buds, the ratio of the non-calcified to the calcified layers, and water and glycosaminoglycan contents in the nucleus pulposus are sensitive indexes of intervertebral disc degeneration.     

论邓小平对马克思社会进步评价标准的继承和发展

马克思认为，生产力的发展与人的发展是社会进步的评价尺度。这两种尺度同时也是我国社会主义现代化建设的价值取向。社会主义现代化建设，既是生产力发展的过程，也是人的全面发展的过程。邓小平继承和发展了这一思想，把发展生产力作为社会主义的根本任务，把人的全面发展作为社会主义建设的最终目的，并通过改革开放这一根本途径来促进生产力发展和人的发展。     

基于KQGIS平台的城镇地籍更新调查数据库建设与关键技术研究

以北京苍穹KQGIS为建库平台,建立河南省罗山县城镇地籍更新调查数据库.介绍了其主要环节和关键技术.首先阐述了城镇地籍更新调查数据库建设工作,包括建库前数据的准备、数据格式转换、数据整理入库及成果提交等方面.之后研究分析建库过程中出现的关键技术问题,实现了地籍成果科学的存储与管理,达到快速查询、更新、统计、空间分析以及数据发布和资源共享等目的.     

Joint Funds of National Natural Science Foundation of China： Strategy, Practice and Development

Joint Funds of National Natural Science Foundation of China(NSFC) are initiated by different stakeholders,which aim to play a better guiding role to support basic research in specific areas and directions.They have formed an important part of the national natural science funding system,which is responsible for advancing science and technology in an expanding frontier.The article would briefly summarize the joint funds strategic goals,programs implementation and achievements in the past decade, and provide a perspective on their future development.     

民勤连古城国家级自然保护区管理存在的问题与对策

概述了民勤连古城国家级自然保护区特殊的生态区位的重要性,总结了该保护区在建设初级阶段的生态环境和动植物资源现状,从法律体系、执法体系、管理体系、科研体系、基础建设、产业开发等方面分析了保护区管理存在的问题,着重在以法治区、宣传教育、自然保护、社区共管和资金投入等方面提出了对策与建议。