基于NS2的无线网络传输性能仿真分析

探讨了IEEE 802.11 DCF的特点和NS2的结构、功能和仿真原理.通过NS2对无线网络传榆性能进行仿真测试,并提出了改善无线网络效能异常现象的有效方法.     

专升本院校图书馆用户信息需求变化及对策

用户的信息需求是图书馆信息服务的归宿。专升本后的新本科院校图书馆用户素质的提高和用户结构的改变,用户的信息需求质量、数量、范围、类型都会变化。对此进行研究,目的是为新升本科院校图书馆的文献资源建设和信息服务的调整提供依据,也为同类型院校图书馆提供借鉴。     

亲历工程能力的项目培养

工程师的培养目标和计划应该以满足社会需求为标准.工程师应知晓国际发展趋势,同时又能倾听企业呼声.让学生亲历工程项目以培养工程意识和工程能力,以团队工作方式锻炼学生,使之适应社会上普遍适用的工作方式.教师领路不把关,让学生自主学习;实践教学基地搭台不做主,突出服务定位.悟道是知识转化为能力的内化过程,素质的培养须通过师生一招一式的交流互动和示范效仿.     

远程开放教育工科课程的引领式学习与考试测评新模式的研究

在远程开放学历教育中,工科类专业具有其独特的重要性：在国际上,一般是高质量的知名开放大学才设有理工科专业,如英国开放大学等;在国内,与高职高专蓬勃发展的局面相适应,电大的工科类专业近年来茁壮成长。然而,其开设专业所需设施与师资的高奈件要求,及其课程内容“难学”、“难考”等痼疾,是长期制约专业发展的瓶颈之一。为此,借鉴国外远程教育成功作法,构建新的引领式学习与考试测评新模式,对于探讨网络环境下理工科教学与管理有着十分重要的意义。     

Teacher Depressive Symptoms and Child Math Achievement in Head Start: The Roles of Family–Teacher Relationships and Approaches to Learning

This study examined the direct and indirect associations of teachers’ depressive symptoms with children’s math achievement through teachers’ reports of family–teacher relationships and children’s approaches to learning (ATL) in Head Start. This study included 3- and 4-year-old 1,547 children (49% female; 27% White, 24% Black, 41% Hispanic/Latino, and 8% others) who attended Head Start from fall 2014 through spring 2015. Results indicated that teachers’ depressive symptoms were directly associated with lower gains in children’s math skills over a year. In addition, teachers who reported higher depressive symptoms were less likely to report positive family–teacher relationships. This, in turn, resulted in lower gains in children’s ATL and was associated with lower achievement in math skills (r² = .69).     

思政课“翻转授课”式考核改革实践审思

积极开展高校思想政治理论课教学改革是提升思想政治理论课教育教学实效性的必然要求。"翻转授课"式考核改革是针对传统"一卷式"考试方式不足而进行的有益教改尝试,将"翻转授课"应用于教学实践中,取得一定成效的同时也显现了一些不足,通过对其审思有助于为今后思想政治理论课考核方式的改革提供借鉴。     

Autonomy and control: a university funding formula as an instrument of public policy

Formulas are used in many jurisdictions to allocate public funds among universities which may then have considerable autonomy in the internal allocation of those funds. This paper provides first an overview of formula funding as it affects university education. This is followed by an exposition on the balance between autonomy and accountability in the Province of Ontario. Formula funding in Ontario is used as a case study to evaluate how effective formula-funding has been in encouraging autonomous universities to work towards the attainment of public policy objectives. The analysis shows that four mechanisms have in fact been used - namely formula funding, designated extraformula grants, incentive funding, and controls - and that some objectives are better supported by different mechanisms. The paper concludes with a discussion of the evolution and an evaluation of formula funding in Ontario against the objectives given for its introduction.     

局部C半群与抽象Cauchy问题

在本文中,我们讨论由算子A生成的局部C半群对应的Cauchy问题(ACP;A,T,x),将初值x的取值范围从CD(A)推广到(λ—A)~(-1)C(E).     

"写中国的文章"——解读贾平凹民族文学观的形成及特点

30年的创作生涯使贾平凹形成独特完善的文学民族观,对此从两个方面进行解读,一是历经蒙昧期、觉醒期、发展期、成熟期的形成过程,二是包含了试验性、叛逆性、开放性、科学性的个性特点。     

Deaf college students' comprehension of relational language in arithmetic compare problems

In this study of deaf college students' performance solving compare word problems, relational statements were either consistent or inconsistent with the arithmetic operation required for the solutions. The results support the consistency hypothesis Lewis and Mayer (1987) proposed based on research with hearing students. That is, deaf students were more likely to miscomprehend a relational statement and commit a reversal error when the required arithmetic operation was inconsistent with the statement's relational term (e.g., having to add when the relational term was less than). Also, the reversal error effect with inconsistent word problems was magnified when the relational statement was a marked term (e.g., a negative adjective such as less than) rather than an unmarked term (e.g., a positive adjective such as more than). Reading ability levels of deaf students influenced their performance in a number of ways. As predicted, there was a decrease in goal-monitoring errors, multiple errors, and the number of problems left blank as the reading levels of students increased. Contrary to expectations, higher reading skills did not affect the frequency of reversal errors.