基于PKI／PMI和SOA访问控制方案的设计

构建安全、高效和公平的企业系统资源的统一访问控制系统,是目前一个重要的研究方向。分析了面向服务的架构技术（SOA）、面向角色的访问控制（RBAC）技术、公钥基础设施PKI和权限管理基础设施PMI在安全管理方面的作用,并重点分析了欧共体PERMIS工程的优缺点,在此基础上把SOA和PKI／PMI很好的结合起来构建了访问控制子系统,克服了PERMIS工程的不足,实现了企业系统的安全、高效的访问控制功能,为企业系统的访问控制提供了一种参考方案。     

也论“多数人统治”的民主困境——以“卡潘/盖洛普对公立学校的民意调查”为例

民主要求实行"多数人统治",依据民意来做出决策.但事实上,实行"多数人统治"这种民主模式必须满足一些前提条件,包括理性的公民、充分掌握信息以及有效参与等.从"卡潘/盖洛普对公立学校的民意调查"这种较为科学的反映民意的调查手段可以发现,由于这三种前提无法充满满足,所以实行"多数人的统治"这种民主模式、依据民意来做出决策必然会面临困境.审慎起见,民意只能用于决策的参考而非依椐.     

基于ISD／SAT过程的成人教育网络课程开发系统研究

教学系统开发／系统化培训方法（ISD／SAT）是美军军事训练教学系统采办指导手册的核心内容,用于指导教学和教学资源的分析、设计、开发、实施和评估。本文简要介绍并分析了ISD／SAT过程、工作模型及其特点,提出了由规划、分析、设计、制作、传递和评估六阶段组成的一个完整的成人教育网络课程开发系统,并对各阶段所涉及到的任务、人员及阶段成果进行了详细的阐述。     

Boost电路数字控制设计

数字控制取代模拟控制已经成为一种趋势.文中针对Boost电路建立了电压、电流双环控制的数学模型,利用基于TI公司的16位DSP芯片TMS320LF2407A的高性能以及适合电源管理的特性,给出了详细的系统设计和控制参数,并用madab进行了仿真验证.     

新疆高校教学资源库管理系统的设计与实现

教学资源库是构筑于校园网基础上的沟通教、学、管理三者之间的桥梁。建立科学、规范、符合新疆高校的教学资源平台,对于新疆各高校课程开发、课程建设、教学资源共享等有着非常重要的意义。笔者结合新疆职业大学教学资源库建设的实践,从设计思想、设计原则、功能模块设计及技术方案方面对比进行论述。     

Influence of augmented reality technology upon pupils＇ knowledge about human digestive system： The results of the experiment

Applying information technologies in the educational process is the main direction of modern education. However, ＂moving＂ information communication technologies to schools is the primary purpose of discussions held by pedagogical and scientific society as this is a very problematic field （Lamanauskas, 2006）. Most of the researches show that the virtual learning environment help to achieve higher learning results. However, pupils＇ questioning in Lithuania, Germany, Romania, Malta and Czech （Lamanauskas, Vilkonis ＆ Klangauskas, 2007; Lamanauskas ＆ Vilkonis, 2007; Bilek, Zemanova ＆ Turcani, 2007） showed that most of the respondents prefer real learning environment or combine real and virtual environments while learning natural sciences. The latest scientific research shows that along the real and/or virtual teaching/learning environment, a combined environment can also be acceptable. The introduced environment can be created using augmented reality technology （ART）, i.e. augmenting real objects found in the environment and usual material visuals with virtual information in the real space. In Siauliai University, a pedagogical experiment was done, and it aims at establishing effective teaching/learning platform based on augmented reality technology （ARTP） influence upon the learning results. 110 pupils of the 7 th form of comprehensive school took part in the experiment. The analysis of the research data shows that pupils＇ achievement after use of ARTP in the experimental group significantly improved while completing some tasks.     

Experimental training of children with attention deficit/hyperactivity disorder

Attention-deficit/hyperactivity disorder （AD/HD） negativelly affects the cognitive and psychomotoric spheres of the pupil＇s social behavior and social adaptation. The review of many studies states that pupils with AD/HD achieve worse learning results because of insufficiently functioning cognitive processess, such as attention, （work） memory, thinking, problem solving, language, small- and large- scale motorics. Behavioral features, exhibited with AD/HD, include low-frustration tolerance, temper problems, persistence, emotional liability, depression, peer rejection, poor self-concept and poor self-esteem. Because of insufficiency of the cognitive processes, the difficulties of social behavior and social adaptation, pupils with AD/HD more often have a dysfunction of pupils＇ role that manifests by learning difficulties and behavior problems. The manifestation of the disorder in the younger school age in the context of children＇s school activities and roles actualizes the exceptional interest of the educational science in the analyzed phenomenon. The search and construction of effective means of socio-educational help for AD/HD primary class pupils should be associated with coordination and adaptation of different effective educational methodologies of different conceptual origin. In order to develop cognitive, psycho-motoric abilities and social behavior of the group of primary class pupils with AD/HD （N=22）, activities of supplementary education were organized after classes （their duration was 6 months）. During the forming experiment, original methodologies were constructed and national and foreign researchers＇ educational methodologies were adapted and tested in new, specific conditions （methods of fairy-tales, correction of cognitive behavior, graphical-logical tasks, games in the sport hall）. Even by relatively rare activities of supplementary education in a homogeneous group of children suffering from AD/HD positive changes of cognitive, psychomotoric sphere, social behavior and social adaptation were achieved.     

A working memory model applied to mathematical word problem solving

The main objective of this study is (a) to explore the relationship among cognitive style (field dependence/independence), working memory, and mathematics anxiety and (b) to examine their effects on students’ mathematics problem solving. A sample of 161 school girls (13–14 years old) were tested on (1) the Witkin’s cognitive style (Group Embedded Figure Test) and (2) Digit Span Backwards Test, with two mathematics exams. Results obtained indicate that the effect of field dependency, working memory, and mathematics anxiety on students' mathematical word problem solving was significant. Moreover, the correlation among working memory capacity, cognitive style, and students’ mathematics anxiety was significant. Overall, these findings could help to provide some practical implications for adapting problem solving skills and effective teaching/learning.     

城乡规划管理专业城市规划原理课程建设研究

城市规划原理课程是高校资源环境与城乡规划管理专业（房地产开发与管理方向）的主干课程之一,对实现专业培养目标具有重要意义．通过对泉州师院城乡规划管理专业城市规划原理课程建设的分析,探讨了课程定位与目标、教学内容的设计与实践,以及课程体系的建设,以期能为推进我国高校城乡规划管理专业课程建设提供参考．     

借助Maple讨论y=x~αsin1/x(α∈R)的连续性

借助Maple软件,对yn=xnsin1/x(n=0,1,2,3)进行了分类比较、讨论,给出它们在x=0处及附近的部分分析性质的证明;作出十分直观的示意图,消除以前只能凭空想象的缺陷;并对y=xαsin1/x和y=xαcos1/x(α∈R)作了推广、引申:结合实际问题进行了应用讨论.