长沙地区第四纪地质若干问题探讨

本文对长沙地区第四纪地层、沉积环境及新构造运动等方面进行探讨,指出:1)下更新统与中更新统的分界线应放在白沙井组与新开铺组之间较为合理;2)更新世以来,本区环境为河湖演替的发展过程,“白沙井”组为中更新世早期河流沉积;3)由于中新生代以来地幔上拱引起洞庭坳陷沉降,致使区内出现南升北降的掀斜变形;4)继承性构造活动和新生的构造,集中表现在湘江两岸的阶地变形及 NNE、NE、EW 向三组断裂,这些新构造均发现在晚更新世以前地层中,说明该区近期属地壳运动较稳定的时期。但晚更新世以后的构造形迹需进一步查明,而一些重大工程仍需进行系统工程地质及地震地质方面的调查与研究。     

《教育信息处理》课程教学改革创新研究

创新是教育进步的灵魂,也是教育事业兴旺发达的动力源泉。我们作为教育工作者,在《教育信息处理》课改中着眼于课题的改革与创新,主要从教学理念、现代教育技术与课程整合、教学模式、检验教学效果的方式等方面进行创新,试图摸索出一条符合现代教学课题改革创新之路。     

基于现代学徒制的专业群课程体系的构建研究——以城市轨道交通控制专业群为例

高职专业群课程体系构建是专业群建设的核心,是实现人才培养目标的载体。长春职业技术学院城市轨道交通控制专业群根据高职轨道交通类人才培养的特点,按照对接城轨企业职业技术领域、校企共建的原则构建"学校课程+企业课程"的模块化专业群课程体系,有效的提高了学生的专业技能水平,提升了人才培养质量,增强了专业群的核心竞争力。     

对抗性竞争与协商合作——多元主义与合作主义的利益集团观比较

多元主义和合作主义是两种重要的有关利益集团的理论。多元主义利益集团观的核心是对抗性竞争,合作主义利益集团观的核心是协商合作,二者的争论集中于对抗与合作、冲突与秩序。这两种利益集团观对当代中国处理利益群体问题有一定启示,即综合两者的优势,以协商竞争的原则解决利益群体问题。     

大学生弱势群体就业难现状及对策分析

弱势大学生群体在就业过程中因遭遇到歧视和不公而产生的认识偏差及心理问题等，影响了社会的和谐稳定，践踏了社会民主和法治，加大了大学生就业难度。本文着重分析了女大学生、贫困生、有生理疾患的学生、残疾生和容貌不佳的学生等弱势群体的就业难现状及其危害，并建议从制定政策、完善法律、加强心理辅导等方面消除就业歧视，推进大学生无障碍就业。     

Enhancing the facilitation of online groups in higher education: a review of the literature on face-to-face and online group-facilitation

There still appears to be a gap between what online learning promises and what it can deliver in terms of student learning. Developments in online pedagogies and professional learning appear to lag behind the developments in technology and the promised benefits of technological transformation may not be realised. In this paper, we bring together perspectives that highlight vital aspects of online group-learning by reviewing the group-facilitation literature and the latest online learning literature to interrogate the pedagogical theories and practices currently used in online group-learning in higher education. We specifically focus on the interpersonal interactions between teachers and students, which are described in the online learning literature using the terms instructor immediacy, teaching presence, and social presence. We note differences in the literature regarding how teacher presence is interpreted and enacted and we expound the importance of the personal characteristics of the online teacher. Finally, we provide some signposts that might help course designers and teachers to improve online group learning: the intentional use of effective online learning pedagogies; a deeper understanding of what constitutes teacher presence; and strategies to enact that teacher presence with online groups. Recommendations for further research in online group facilitation are provided.     

电磁波穿过DNG媒质时的传播特性分析

针对广泛关注的DNG媒质(负折射率媒质),以有损耗的Drude型媒质为模型,对电磁波穿过DNG媒质的平行板时的传播特性做了理论分析;采用FDTD方法对正弦电磁波穿过DNG媒质的平行板的传播过程进行了数值建模,数值模拟的结果证明了正弦电磁波在穿过DNG媒质的平行板时仍然具有相速度与群速度方向相反的特性,为DNG媒质的广泛应用提供了理论基础.     

谈异形词规范的系统性原则

以系统性和规范性原则,切入45年来人们对异形词研究的得失。把现代汉语所有的异形词作为一个系统的整体,即异形词群系统,揭示其意义结构关系及其规律。认为异形词系统组内各词之间同素同构与非同素同构并存,异形词群的其他各个层级系统之间以及异形词群与非异形词群之间几乎都有一个共同的语素。在此基础上,概括出规范异形词的系统性原则的定义。     

Effect of Air Velocity on Thermal Comfort under Thermal Environment Ramp Changing

Set points of the indoor air temperature and relative humidity in short-term staying location were studied. In this condition, the thermal reaction of human body varied with the ramp changes of the environmental thermal parameters. The change rules of about 60 subjects‘ thermal reaction to the ramp change of environment were surveyed, and the effect of air movement on the thermal reaction during transient condition was considered by using a questionnaire. With the experimental results and research findings under stable condition, a way to set environmental parameters of short-time staying location was recommended.     

砂土地震液化的不确定性判别法综述

通过对不同自由场地液化势估计的方法和公式进行总结和比较 ,发现剪切波速比其它波的波速更能反映地基岩土层的工作性能 ,现已为全国地基勘察规范所采用