A quantitative multimodal discourse analysis of teaching and learning in a web-conferencing environment – The efficacy of student-centred learning designs

This paper presents a quantitative approach to multimodal discourse analysis for analyzing online collaborative learning. The coding framework draws together the fields of systemic functional linguistics and Activity Theory to analyze interactions between collaborative-, content- and technology-related discourse. The approach is used to examine how the task subject matter, the activity design, and the choice of interface affected interaction and collaboration for a computing course conducted in a web-conferencing environment. The analysis revealed the critical impact of activity design on the amount and type of discourse that transpired. Student-centred designs resulted in over six times more student discourse as compared to teacher-centred designs and created a learning environment where students took greater ownership over the tasks and contributed more to the content-based discussion. The paper also incorporates a rationale for the approach to coding and a reflection on its efficacy for discourse analysis in technology-based learning environments.     

重点课程特色建设的研究与实践

文章以上海市重点课程建设项目"数据库原理及应用"的建设为背景,根据人才培养目标和课程的特点,探讨课程建设方案的定位、目标和特色,以及课程建设的重点和难点、研究课程实践教学和素质能力培养的方式方法等,提出通过课程建设激发学生学习的积极性、主动性和创造性,从而提高教学效果和应用型人才的综合素质能力。     

政务信息资源中心框架设计及关键技术研究

目前国内有关政务信息资源共享的研究及应用还停留在网络互联互通、信息资源整合、点对点数据交换阶段,并没有达到"协同工作"的要求.鉴于此,提出了政务信息资源中心的概念,实现政务信息资源的统一获取、统一管理、规则化和规模化服务.结合工作实践,对其组成、总体框架、技术架构进行了设计,并就实现时需要解决的关键技术进行了研究.     

The scope of artificial neural network metamodels for precision casting process planning

Precision investment casting process planning has been tackled in the past according to experience. Recently, casting simulation software is being increasingly used to predict product quality by implementing ‘what-if’ scenarios. Input parameters include relatively simple factors such as mould temperature, melting temperature, casting material. They also include factors whose influence is more complex to quantify, such number and location of feeding points, diameter and length of inflow channels, angle of channel with respect to the main sprue axis. Simulation results cannot help the engineer for workpieces other than the one simulated. In this paper a series of feedforward artificial neural network (ANN) models is presented aiming at such generalisation. To achieve this, a large number of software simulation runs were conducted for a number of different small parts, with varying runner geometry and casting conditions. The parameters characterising part geometry have been chosen to be surface area and volume-to-area ratio. The different ANN models predictive capabilities are reflected to the respective training and generalisation errors. A user-friendly interface has been conducted for model execution in a complete application, whose main virtue is expandability.     

浅谈高校教学软件用服务器的复用技术

根据国家相关部门的要求,财经类高校实践教学所占的比例逐步增加,财经类高校特有的实践教学模式,决定了实践教学多采用软件模拟的方式进行。采用软件模拟的方式,要求有大量的服务器用于支撑教学软件的运行。受到资金投入和机房场地等因素的制约,教学软件用服务器的数量总是不能满足需求,从而影响实践教学的开展。结合财经类高校实践教学软件特有的使用规律,提出使用服务器复用技术,解决因服务器数量上不足影响实践教学顺利进行的问题,从而更好的服务实践教学。     

Behavioral Analysis of E-commerce Acceptance in Micro-enterprises简

E-commerce present opportunities and challenges for businesses, especially for micro-enterprises. This paper proposed a theoretical framework that in line with the unique characteristics of E-commerce acceptance in micro-enterprises in Chengdu, which is based on the unified theory of acceptance and use of technology （UTAUT） model. The extending UTAUT model includes key constructs of performance expectation, perceived behavioral control and the characteristics of owner-managers.     

基于H.264的视频编码标准的关键技术分析

H.261是ITU-T于1990年制定的一个视频编码标准,设计目的是能够在带宽为64kbps的倍数的综合业务数字网上传输质量可接受的视频信号,是最早的运动图像压缩标准,本文对H.261的视频编码标准关键技术研究。     

高职电子技术课程的兴趣教学法

高职院校学生学习基础相对较差,对于传统的课堂教育难以适应,提出在电子技术教学中实施兴趣教学法,提高学生主动学习的积极性,也有助于提高教学质量。电子技术课实践性强,几乎每堂课都会涉及到实验,这样可以长期在实验室上课或者在教室做演示实验,每次课前教师列一个清单让学生提前到实验室准备好实验器材,学生在准备器材的过程中就会带着疑问：这是做什么用的呢？学生有了疑问就会有学习的好奇心,进而也就激发了对该课程的学习兴趣。     

计算机虚拟现实技术的教学应用与软件的开发研究

提出了利用虚拟现实技术开发的"模拟法庭教学软件",建设<模拟法庭>虚拟实验室,以解决"模拟法庭"数量不足的问题,使每一个学生都参与到实践教学中去,教学效果良好.     

流程工业CIMS中综合优化问题的研究

文章首先提出了流程工业及其CIMS中的各种优化问题;;小结了各种解决优化问题的求解技术.在此基础上提出了一种基于多级优化的一种流程工业CIMS结构.最后;;作者提出了一种解决流程工业CIMS多目标优化问题的最大熵优化技术