大学生田径课中运动性心理疲劳的调查分析与对策——以广州大学体育专业为例

目的对广州大学体育专业学生在田径课中出现的运动性心理疲劳现象进行调查分析,提出建议。方法采用观察法、问卷调查法与访谈法等方法,对广州大学体育学院大一与大三的学生进行调查。结果和结论体育专业学生在田径课中出现运动性心理疲劳的现象比较多,其原因是对田径运动的价值认识不充分,以及教学方式与教学环境的局限性等。控制运动性心理疲劳可以提高训练的效果,让学生更好的掌握运动技能与理论知识。     

A methodology for the identification of glass panes of different origin in a single stained glass window: Application on two 13th century windows

The chemical composition of 11 glass panes originating from two 13th century non-figurative windows were analyzed by means of Scanning Electron Microscopy–Energy Dispersive X-ray system (SEM-EDX). The windows were discovered in the back-wall of the triforium during the restoration of the choir of the cathedral St. Michael and St. Gudule in Brussels (Belgium). In order to determine if these windows were fabricated with glass of different origin or not, the compositional difference between the panes were compared with the variation in composition as a result of the following causes: (1) compositional fluctuation between panes cut from the same sheet of glass, (2) compositional fluctuation caused when panes are cut from different sheets that were made with the same batch, (3) compositional fluctuation caused when the glass is made from different batches at the same production center, and (4) compositional fluctuation as a result of glass produced at different fabrication centers.     

基于业务流程的企业扁平化组织结构

为了适应经济全球化及剧烈竞争性环境,能对市场的快速变化作出及时反应,企业的组织形式正经历重大转变,由原来垂直的职能部门组织架构转变为横向的、以流程为基础的扁平化的组织结构。结合价值链这一分析工具,阐述了企业通过判定自身竞争优势来进行业务流程再造,从而构建扁平化的组织结构。     

以科学发展观为指导实现跨越式持续发展——西安石油大学"十五"科技工作回眸

高校科技工作要坚持科学发展观,坚持“以人为本”,不断进行制度创新、管理创新,充分调动广大科技工作者的主动性和积极性,以特色和创新求发展,走出一条特色鲜明、优势突出的科技创新之路,实现跨越式持续发展。     

CUE SYSTEM UTILIZATIONS AMONG OLDER READERS

The effects of writing style upon mature older readers’ reading comprehension are considered. Two narrative historical selections, the first emotive and abstract and the second nonemotive and concrete, were employed. Miscue analysis was used to evaluate the efficiency with which each reader used reading strategies across the five systems that cue meaningful comprehension. Miscues were analyzed at the word, clause, sentence, and intersentence levels. In addition, interview schedules were employed to identify readers’ perceptions of preferred reading strategies and to permit a comparison with actual performance. The findings indicate that mature older readers are consistent in cue system utilization. A preference for the word cue system influenced both the use of cues from other systems and comprehension. Use of the word‐level cue system is inversely related to the use of the other available cue systems. Preference for cues within words also appears to be inversely related to comprehending effectiveness. The subjects’ perceptions of the reading process and their actual reading performance appeared to determine patterns of cue system use more clearly than did the differences in materials. As a result, those developing materials intended for use in programs with older persons should not only be concerned with the content and quality of those materials but also the skills and perceptions of those who will use the materials.     

An orthopedagogical method for children with a depression

ABSTRACT

An orthopedagogical method for teaching children with a depression is presented here. Relatively unknown in the English‐speaking world, orthopedagogy is a pedagogical discipline that is aimed at an entire action field. It does not target the child with handicap, but the entire problematic educational situation (PES). Orthopedagogy is the scientific study of assistance given to those concerned with a PES ‐ namely, the child, parents, brothers and sisters, grandparents, and so on. To break through a PES or to get rid of it, the orthopedagogician has to listen to the orthopedagogical request for help of the child and give an appropriate answer to it. On the basis of a theoretical model of Paul Gilbert, an orthopedagogic request for helping children with a depression was formulated. Gilbert's model offers a perspective derived from evolution theory and argues for the adoption of a bio‐psychological approach. Children with a depression request a warm and loving climate, an attractive and simple education situation and close involvement on the part of the educator. To answer that request, we set orthopedagogical action on two tracks. On track 1 (dialogical action) we try to break through the PES by asking the educator to over‐accentuate the pedagogical climate, the education situation and his/her own presentation. On track 2 (technical action) we designed an approach aimed at children aged between 6 and 12 years with a depression.     

RIM: A Random Item Mixture Model to Detect Differential Item Functioning

In this paper we present a new methodology for detecting differential item functioning (DIF). We introduce a DIF model, called the random item mixture (RIM), that is based on a Rasch model with random item difficulties (besides the common random person abilities). In addition, a mixture model is assumed for the item difficulties such that the items may belong to one of two classes: a DIF or a non-DIF class. The crucial difference between the DIF class and the non-DIF class is that the item difficulties in the DIF class may differ according to the observed person groups while they are equal across the person groups for the items from the non-DIF class. Statistical inference for the RIM is carried out in a Bayesian framework. The performance of the RIM is evaluated using a simulation study in which it is compared with traditional procedures, like the likelihood ratio test, the Mantel-Haenszel procedure and the standardized p -DIF procedure. In this comparison, the RIM performs better than the other methods. Finally, the usefulness of the model is also demonstrated on a real life data set.     

基于ARP协议入侵的安全策略

ARP协议指向媒体访问控制的地址映射,ARP高速缓存中有一项不正确,IP数据报就可能被发往错误的计算机.如果这种错误被充分利用,可以对网络的安全带来危害.针对这种可能产生的危害,给出了分析过程并提出了一些预防和解决的方法.