基于故障模式、影响和致命度分析(FMECA)的机械设备更新决策软件的实现

本文运用FMECA方法对机械设备的故障模式、影响和致命度进行了分析，快速掌握了机械设备主要故障的部位、模式、机理、性质及发展趋势，并使用软件程序实现了计算机决策。实践证明，谊方法方便可靠。     

Bi-directional h-index: A new measure of node centrality in weighted and directed networks

This paper builds an index family, named bi-directional h-index, to measure node centrality in weighted directed networks. Bi-directional h-index takes the directed degree centrality as the initial value and iteratively uses more network information to update the node’s importance. We prove the convergence of the iterative process after finite iterations and introduce an asynchronous updating process that provides a decentralized, local method to calculate the bi-directional h-index in large-scale networks and dynamic networks. The theoretical analysis manifests that the bi-directional h-index is feasible and significant for establishing a greater conceptual framework that includes some existing index concepts, such as lobby index, node’s h-index, c-index and iterative c-index. An example using journal citation networks indicates that the bi-directional h-index is different from directed degree centrality, directed node strength, directed h-degree and the HITS algorithm in ranking node importance. It is irreplaceable and can reflect these measures of node’s importance.     

如何理解学生的“全面发展”

学生的全面发展是教育的根本目标,但长期以来,由于对学生全面素质结构认识不够完整清晰,以致教育活动系统诸如目标系统、课程系统、教学系统和管理评价系统都有缺失。“四格”素质结构理念对学生全面素质作了新的认识,即学生(作为人)有待发展的全面素质由体格、心格、智格、行格“四格”组成,“四格”各自以自身独特的内涵而存在,又互相交融,不可分割。“四格”理念旨在构建面向学生全面素质发展的课程体系。     

Korean Secondary Students’ Perception of Scientific Literacy as Global Citizens: Using Global Scientific Literacy Questionnaire

We re-conceptualized the meaning of scientific literacy and developed an instrument, which we call the Global Scientific Literacy Questionnaire (GSLQ) based on a new conceptual framework for scientific literacy in the twenty-first century. We identified five dimensions, each with key elements. The five dimensions are (1) content knowledge (core ideas of science), (2) habits of mind (science practices), (3) character and values, (4) science as human endeavor, and (5) metacognition and self-direction. In this study, we attempted to diagnose the extent to which South Korean secondary students perceive themselves as global citizens having such capabilities using GSLQ with 3,202 students (7th–12th grades). Validity and reliability were examined using various statistical techniques including the Cronbach's α coefficient, exploratory factor analysis, and confirmatory factor analysis. The use and value of the instrument were discussed by examining the Korean secondary students’ overall scientific literacy as well as their views on each dimension across gender and grade levels. We recommend that teachers and researchers use the GSLQ to assess students’ global scientific literacy and provide comments on its usefulness as a research tool and the practical use of its inventory of items.     

“精品实验项目”经典属性的探索

在"精品实验项目"建设中,通过对经典的动态理解,在实验项目的内涵设计、确立建设目标的长远性、传承与更新机制的建立以及知识的纵深与综合性相结合等方面,对"精品实验项目"的经典属性进行了探索,并作为项目建设的参照之一;以"精品实验项目"建设的实践过程为例,对探索中的经典属性在"精品实验项目"建设中的涵义进行了探讨。     

湖北体育高考生无氧能力与体育成绩相关研究

对2011年36名湖北省体育高考生无氧能力和运动成绩研究,分析体育高考生无氧能力与运动成绩的相关性,为教练简易评价考生无氧能力提供理论依据。采用Wingate无氧功率试验获得考生的无氧能力参数,对体育高考生高考体育成绩和无氧能力进行描述、对比分析、相关分析。受试者30sWingate无氧功率测试的各项指标值均与高考体育测试总分呈显著相关;男女生二级蛙跳成绩和男生100m短跑成绩与无氧功率各项指标呈显著相关。受试者高考体育测试各项成绩及高考体育测试总分与其无氧功率各项指标有着不同程度的相关。     

安徽产业结构调整的难点和对策

产业结构能否适时升级,已经成为关系安徽整个21世纪的经济发展能否跟上全国步伐和经济地位能否提升的关键。安徽产业结构升级缓慢的原因与存在的问题,既有资源禀赋的约束,也有历史问题的影响,更在于政府发展战略的不连续,没有形成自身的优势主导产业,同时还在于创新不足以及利益分享机制的不健全。为了加快安徽产业结构调整的步伐,安徽省必须研究主导产业选择的适用基准,正确选择主导产业,同时还要大力发展战略性新兴产业,加速融入＂长三角＂经济圈,建立利益协调机制以保证产业政策的有效实施。     

职业化教育与产业结构升级关系分析

2008年源于美国的世界性的金融危机对我国中小企业的影响是巨大的,在导致大批人员失业的同时,也充分暴露了我国产业结构的弱点。面对危机,作为与产业关系最为密切的高等院校,必须加快改革步伐,融入“以人为本”的发展理念,增加教育的多样性和层次性,充分发挥职业教育的弹性和“蓄水池’,作用,既满足个人职业生涯规划需要,又满足产业结构升级的需要。     

数字图书馆门户网站设计研究——以四川大学图书馆门户为例

四川大学图书馆数字门户网站的改版更新,以建构主义、用户需求导向、开放性、便捷性、扩展性、交互性作为设计原则。从读者角度出发,排列布局页面,重组资源内容,收集读者访问数据,还为读者提供访问支架,帮助读者完成充分的交互,使读者获得创新、多元、个性化的服务。