江西信息产业在经济增长中促进作用研析

通过对信息产业拉动GDP增长的态势分析,提出要增强信息企业自主创新能力,加快信息化建设,以信息化带动工业化,以工业化促进信息化,推进江西经济结构调整和产业结构优化升级;不断提升信息产业竞争力,走新型工业化道路,促进江西信息产业可持续发展。     

在数学教学中培养学生发散思想

在数学教学中，选择典型习题，引导学生探索各种不同方法，寻求变异，观察，分析，从多方面寻求问题的解决方法，广泛地,深刻地进行思维，提出新的假设， 新的构思，是最宝贵的思维品质。     

中耳植入式助听装置压电悬浮振子的电压特性分析(英文)

针对一种新型悬浮振子式中耳植入助听装置, 分析了其振子的驱动电压特性, 该振子由0.7Pb(Mg1/3Nb2/3)O3-0.3PbTiO3(PMN-30%)叠堆实现. 为了辅助分析, 建立了听骨链与振子的简化耦合力学模型. 首先利用逆向成型技术建立了人体中耳有限元模型, 其可靠性通过镫骨底板的位移模拟值与实验测得数据对比得以验证; 然后利用该中耳有限元模型分析了振子绑定装置处的位移阻抗特性, 并基于此建立听骨链与绑定装置的等效力学模型; 最后建立了听骨链与压电悬浮振子的耦合力学模型, 分析了该振子的驱动电压特性. 研究结果表明:振子所需驱动电压随着频率的增大而减小; 在语音频段, 所需的最大驱动电压为20.9 V; 在感音神经性听力损伤多发生的中高频段, 该驱动电压不高于3.8 V, 满足中耳植入式助听装置低电压、低能耗的要求.     

Deconstructing Engineering Education Programmes: The DEEP Project to reform the mechanical engineering curriculum

The goal of the Deconstructing Engineering Education Programmes project is to revise the mechanical engineering undergraduate curriculum to make the discipline more able to attract and retain a diverse community of students. The project seeks to reduce and reorder the prerequisite structure linking courses to offer greater flexibility for students. This paper describes the methods used to study the prerequisites and the resulting proposed curriculum revision. The process involved dissecting each course into topics at roughly the level of a line in a syllabus, editing the list of topics, associating prerequisites and successors to each topic and then using a genetic algorithm to produce clusters of topics. The new curriculum, which consists of 12 clusters, each of which could be a full year course, is quite different from the traditional curriculum.     

Whose story is this? Discrepancy triggers readers’ attention to source information in short narratives

Three experiments investigated the role of source information (i.e., who said what) in readers’ comprehension of short informational texts. Based on the Discrepancy-Induced Source Comprehension assumption (Braasch, Rouet, Vibert, & Britt, 2012), we hypothesized that readers would be more likely to make use of source information when summarizing stories that included discrepant statements. Readers would also memorize source information more accurately. Experiments 1 and 2 found that American and French college students were more likely to refer to source information when they summarized news reports containing discrepant assertions. A detailed content analysis of the summaries also indicated that students use hedging and several other tactics to resolve contradictions. Experiment 3 replicated Braasch et al.’s finding that sources of discrepant stories were more likely to be recalled than sources of consistent stories. Experiment 3 also extended these findings using longer texts and a different reading task. Altogether the data support the Documents Model framework of multiple source comprehension.     

Motivational Beliefs, Study Strategies, and Mathematics Attainment in High- and Low-Achieving Chinese Secondary School Students

In order to examine the relationship between cognitive and motivational variables and their relationship to mathematics attainment, Hong Kong-Chinese students enrolled in schools for high-, average-, and low-achievers completed questionnaires in Year 10 and in Year 11. Low-achievers perceived academic learning as being less useful over time and reported spending less time studying in Year 10 than in Year 11 but high- and low-achievers did not differ on their use of self-regulated learning strategies. Performance on the public examination in mathematics was predicted by prior achievement and Self-Concept of Mathematics Ability. Results underscore the importance of considering cultural beliefs systems and educational systems in models of academic motivation. Copyright 2000 Academic Press.     

175 Years of linear programming

The theory of flows in networks began to evolve in the early 1950’s.The various linear optimisation questions that could be asked of flows in conserving networks turned out to be neat combinatorial specialisations of linear programming. The simplex method (and its variants) turned out to have very pretty combinatorial interpretations on networks. The algebraic dexterity of linear programming duality led to a unified treatment of many deep theorems in graph theory and combinatorics. In this part, the last of the series on linear programming, we will see glimpses of the theory of network flows through a specific flow optimisation problem — the maximum flow problem.     

衢州地区高职学生艾滋病相关知识认知状况调查

了解衢州地区高职学生艾滋病相关知识认知情况,为有效开展高职学生艾滋病健康教育提供依据。方法:按照分层整群抽样的方法对衢州地区2所高职院校502名不同专业学生进行问卷调查。结果:艾滋病相关基础知识,医药类专业学生总体知晓率80%,非医药类学生总体知晓率为65.5%。两者差异有统计学意义(P<0.01);艾滋病相关法律知识,医药类专业学生总体知晓率60.9%,非医药类学生总体知晓率为54.7%。两者知晓率差异无统计学意义(P>0.05)。结论:衢州地区高职学生艾滋病基础知识认知水平总体良好,但相关法律知识认知情况不容乐观,应积极探索并构建艾滋病健康教育平台,有针对性地开展艾滋病健康教育。