浅论Unigraphics与Pro/ENGINEER软件异同

Unigraphics和Pro/ENGINEER是当今最流行的三维实体建模软件,内容丰富,功能强大,在工业设计中应用日益广泛.文章主要针对众多设计者在选择设计软件时的矛盾心理,从多个方面对UG和PRO/E软件的异同进行说明,所有的结论对设计选择合适的设计软件进行针对性的高效率设计具有一定的借鉴意义.     

试论竞争情报工作的合法化

As competition requires fair law environment, competitive intelligence work should obey the rules of law, too. This article elaborates the legalization of competitive intelligence work from three aspects its necessity, manifestation and law system. Competitive intelligence tends to develop in the direction of standardization, and legalization is the inherent character of competitive intelligence.     

《中国学术期刊(光盘版)》的评价功能分析

《中国学术期刊（光盘版）》收录核心期刊的总比率只有62％,评价功能尚待完善。     

Pro/E的运动仿真在平面四杆机构教学中的应用

运动仿真可将静止抽象的机构动态化和具体化,平面四杆机构的教学效果在Pro/E环境中得以淋漓尽致发挥,不仅可以观察到各构件的组装情况,还可以进行运动仿真和运动分析,是中职《机械基础》课程教学与Pro/E软件CAE功能应用的完美结合。     

Designing and validating an autoverification system of biochemical test results in Hatay Mustafa Kemal University,clinical laboratory

IntroductionAutoverification (AV) is a postanalytical tool that uses algorithms to validate test results according to specified criteria. The Clinical and Laboratory Standard Institute (CLSI) document for AV of clinical laboratory test result (AUTO-10A) includes recommendations for laboratories needing guidance on implementation of AV algorithms. The aim was to design and validate the AV algorithm for biochemical tests.Materials and methodsCriteria were defined according to AUTO-10A. Three different approaches for algorithm were used as result limit checks, which are reference range, reference range ± total allowable error, and 2nd and 98th percentile values. To validate the algorithm, 720 cases in middleware were tested. For actual cases, 3,188,095 results and 194,520 reports in laboratory information system (LIS) were evaluated using the AV system. Cohen’s kappa (κ) was calculated to determine the degree of agreement between seven independent reviewers and the AV system.ResultsThe AV passing rate was found between 77% and 85%. The highest rates of AV were in alanine transaminase (ALT), direct bilirubin (DBIL), and magnesium (Mg), which all had AV rates exceeding 85%. The most common reason for non-validated results was the result limit check (41%). A total of 328 reports evaluated by reviewers were compared to AV system. The statistical analysis resulted in a κ value between 0.39 and 0.63 (P < 0.001) and an agreement rate between 79% and 88%.ConclusionsOur improved model can help laboratories design, build, and validate AV systems and be used as starting point for different test groups.     

嵌入式Linux下AD7490驱动的实现

用AD7490对s3c2440进行了扩展,提高其数模转换精度。介绍了嵌入式Linux操作系统下AD7490驱动程序的开发原理及流程,并编写测试程序测试其功能,对于基于Linux的嵌入式系统中小型外设的开发具有借鉴意义。     

基于C／S与B／S架构的IM软件的研究与分析

IM软件是当今以Internet网络为基础的实时通信系统,在实现上主要基于两种架构,分别是基于C／S架构和B／S架构的。基于C／S架构的IM软件主要使用了TCP或UDP协议、P2P~Socket等技术,实现起来较容易,但是用户需要自己安装客户端软件;基于B／S架构的IM软件主要应用了Ajax、ServerPush、服务器轮询等技术,实现起来比较复杂,但是用户不需要安装客户端软件,只需通过浏览器即可实现网上聊天功能。     

UHV／CVD生长SiGe／Si材料分析及应用研究

以Si2H6和GeH4为生长气源,采用UHV／CVD系统在Si（100）衬底上生长了Sil—xGex合金和Sil—xGex／Si多量子阱结构。采用X射线双晶衍射仪、扫描电子显微镜和原子力显微镜等仪器设备对样品的组份、界面和表面形貌等晶体质量进行了研究。SiGe合金中Si和Ge摩尔分数的比值随着Si2H6和GeH4流量比的增加按比例线性增加,比例因子为2．57。生长的Si0．88Ge0．12合金样品的界面清晰,表面平整,平均粗糙度仅为0．4nm,位错密度低于104／cm2。六周期Si0．88Ge0．12／Si多量子阱的X射线双晶衍射摇摆曲线中存在多级卫星峰和Pendellosung条纹。这些结果表明SiGe合金和SiGe／Si多量子阱均具有很好的晶体质量。     

Field dependence/independence cognitive style and problem posing: an investigation with sixth grade students

Field dependence/independence cognitive style was found to relate to general academic achievement and specific areas of mathematics; in the majority of studies, field-independent students were found to be superior to field-dependent students. The present study investigated the relationship between field dependence/independence cognitive style and problem-posing ability among sixth grade students. The 94 students’ sample was clustered into three groups, according to the cognitive-style field dependence/independence (field dependents, field mixed and field independents). The results suggest that field-independent participants outperformed field-mixed and field-dependent ones in both problem-posing ability and the complexity of the problems posed. It was also found that the content of the task influenced the differences between the three groups of students as regards the ability in problem posing and the complexity of the problems posed; while in the first (informal context), second and fourth task differences were found between the groups, in the third task (formal context), no differences were evident. The results are interpreted in consideration to the relevant literature findings. Some educational implications are discussed and directions for future research are drawn.     

Extension for organic agriculture: a comparative study between Baden-Württemberg,Germany and Crete,Greece

Purpose: The aim of this paper is to compare the extension services offered in the field of organic agriculture (OA) in Baden-Württemberg (BW), Germany and Crete, Greece.

Design/methodology approach: 16 in-depth interviews, 10 in BW and 6 in Crete, were carried out with representatives of OA extension providers; interviews were qualitatively analyzed and overall results compared between the two areas.

Findings: The structure along with extensionists' capacities and methods employed are rich, appropriate, and well functioning in BW. On the contrary, poor structure, lack of networking and facilitation in Crete jeopardizes extension performance and impact. Practical implications: Contrary to BW, the situation in Grete does not allow for much optimism concerning the successful development of OA and the implementation of European Innovation Partnerships.

Theoretical implications: Further elaboration of the characteristics of extension/advisory services and their interlinkages, including the role of the state in facilitating pluralistic services, is needed.

Originality/value: The paper demonstrates the importance of the structure of extension services and the central facilitation role of the state; furthermore, the interdependency of structure, capacity and the methods employed is demonstrated which, in turn, influences extension performance and impact especially networking and facilitation for social learning and innovation co-creation.