Engaging identities in a regional university classroom

This paper examines the coincidence between how lecturers teach and what students expect to learn at a regional university in Australia. It looks outside cognitive and behavioural theories of motivation to find that both students and lecturers are driven by a common goal, but it is not a methodology. I examine the ways in which students and lecturers seek support for their identity, and how their desire for recognition can support or interfere with the aims of education. The paper proposes that one of the fundamental challenges in higher education is to understand what goes on in-between students and lecturers in the university classroom. While many lecturers in this study are already doing this, there continues to be only an intuitive understanding of what motivates the relation between learning and teaching.     

An optimal quality adaptation mechanism for end-to-end FGS video transmission

In this paper, we propose a novel optimal quality adaptation algorithm for MPEG-4 fine granular scalability (FGS) stream over wired network. Our algorithm can maximize perceptual video quality by minimizing video quality variation and increasing available bandwidth usage rate. Under the condition that the whole bandwidth evolution is known, we design an optimal algorithm to select layer. When the knowledge of future bandwidth is not available, we also develop an online algorithm based on the optimal algorithm. Simulation showed that both optimal algorithm and online algorithm can offer smoothed video quality evolution.     

监控系统中远端信号的传输方法

监控信号在传输时,可以利用光纤或铜缆,传输速度的快慢跟传输介质及通道大小有绝对的关系。监控系统所要传输的内容有:影像、声音及控制讯号,无论是声音还是影像都可以转变成"数据",本文主要介绍了域内远端信号局端连线远端信号、网络远端信号的传输方法。     

How important is it to my parents? Transmission of STEM academic values: the role of parents’ values and practices and children’s perceptions of parental influences

The success of science education in classroom and out-of-school settings can be influenced by parents’ behaviours and STEM-related values. The present study investigated pathways in parent-to-child transmission of STEM (science, technology, engineering, mathematics) values by examining at same time parents’ values and behaviours, along with their children’s perceptions of these parental influences. The study included 1071 students (M_age?=?12.15) and the same number of their parents. Path analysis revealed that children’s importance value of the STEM school fields was best explained by their perceptions of parental values and behaviours in STEM. On the other hand, parents’ self-reported values and behaviours had a weak effect in predicting children’s values, which can be explained by inaccurate children’s perceptions of their parents. The results suggest that parents more easily convey beliefs about the utility than the attainment value of STEM. Namely, parents’ utility value had a larger effect in predicting children’s value, partly mediated through children’s perception of parents’ encouragement of STEM interests. The study highlights the role of children’s perceptions of their parents’ beliefs and behaviours and the importance of communicating STEM-related values within the family. Practical implications for parents and science educators are discussed.     

从客家变迁中的体育文化发展趋势看传承机制构建--以“客都”梅州为个案

采用文献资料法,实地考察法,问卷调查法等研究方法,对梅州地区客家体育文化的变迁从历史渊源,现实状况,未来发展趋势三方面进行探讨,指出了客家体育文化在变迁中的面临的现实问题,有针对地提出成立实体和虚拟博物馆,加强客家宗族联盟建设,客家体育进课堂,成立世界客家体育分会等建议以实现客家体育文化传承的延续性,利于构建客家体育文化传承机制。     

基于槽波透射法CT成像的工作面煤厚预测

槽波勘探法是探测煤矿井下工作面中煤层结构和其他异常体的一种有效井下勘探方法。本文回顾了槽波勘探法的发展历史、形成原理,介绍了槽波透射法。根据槽波在煤层中的传播规律和特点,重点研究了煤厚对槽波的影响。在理论基础上,利用槽波地震勘探技术对黄陵一号煤矿1001工作面进行了透射法进行探测。     

卫星网络促进远程教育发展--谈甘肃电大卫星网络应用

随着远程教育的发展，甘肃电大依托甘肃教育台建成了覆盖全省的卫星网络。对该系统进行了分析，依据实践工作经验论述了卫星网络促进甘肃电大远程教育的发展；并对卫星网络的使用进行了阐述。     

A novel MAC mechanism to resolve 802.11 performance anomaly

In the 802.11b networks, the guarantee of an equal long-run channel access probability causes performance anomaly in a multi-rate wireless cell. Much interest has been involved in this issue and many effective mechanisms have been proposed. The usual MAC layer solutions include the initial contention window adaptation, the maximum transfer unit size adaptation and the packet bursting. In this paper, we propose a novel approach which introduces a new parameter called the transmission prob- ability pt to the legacy protocol. By adjusting pt according to the transmission rate, the proposed scheme can solve the performance anomaly problem cleanly. Throughput analysis and performance evaluation show that our scheme achieves significant im- provement in the aggregate throughput and the fairness.     

工程认证下翻转课堂在《液压传动》中的应用

工程教育专业认证已成为各国保障高等教育质量的重要手段,对学生毕业条件提出了更严苛的要求。传统的"灌输式"《液压传动》课程教学方法,受到时间与空间的限制,学生只能被动地接收知识,没有机会思考和深入理解,不能灵活运用所学的知识解决实际的问题,难以满足工程认证的达成度。尝试将翻转课堂这一先进的教学模式引入《液压传动》课程中,引导学生在课下自主学习,在课堂进行讨论答疑,取得了较为理想的学习效果,提高了学生自主学习和运用所学知识解决问题的能力。     

ZnS_(0.8)Se_(0.2) film for high resolution liquid crystal light valve

INTRODUCTION Liquid crystal light valves (LCLV) are devices whose function is to convert an input image pos-sessing specific wavelength, intensity and coher-ence to an output image in which some or all of these parameters are varied (Efron et al., 1985). Therefore, they can be used as image amplifiers for large screen projection display, image wavelength converters and incoherent-to-coherent image converters for optical data processing and correlation. The appli-cation potentialities ar…