基于ZigBee的互动教学系统学生端设计

基于PI教学法思想,利用ZigBee技术的近距离、低功耗、低数据速率等特点,提出一种基于ZigBee技术提高课堂教学效果的互动教学系统.该系统分为教师端和学生端.教师端可以使教师实时掌握学生上课情况,以实现高效教学.学生端设计采用的是TI公司CC2530内置加强版8051内核微控制器,通过LED灯显示接收信息和矩阵键盘输入信息,以实现上课签到、回答问题、匿名对教师进行评价等功能.学生端能够满足互动教学系统的功能要求,并且因其低成本和小型化特点易于在教学实践中推广应用.     

网上互动教学及其对教师要求

本文概括了网上互动教学的概念和基本内容,全面分析了其特点,并在此基础上对教师如何应对这种教学模式的变化作了探讨。     

基于Web的网上互动教学系统的设计与实现

介绍了一个基于Web的网上互动教学系统 (简称OITS)的设计思想与实现方法。该系统采用了一种全新网上教学方式 ,包含了网上授课、在线辅导答疑、个性化学习、习题作业测验、在线考试等功能模块。通过局域网或Internet平台 ,并利用浏览器软件 ,学生可不受时间和空间的约束完成该门课程的全部学习任务 ,教师也可轻松地完成该门课程的全部教学工作     

网上教学系统的设计与实现

通过对<数据结构原理>的网上教学系统的设计与研究,分析了网上教学支撑平台应具备的核心功能,并构造了一种互动式的全新的网上教学系统.     

基于网络表的数据收集转发器的分析与设计

数据收集转发器是一种对表具进行连续、长时间、自动、实时监测,并进行分析、处理、存储、数据转发以及自动报警的中继设备。介绍了数据收集转发器的硬件结构,提出了数据收集转发器的设计方案,可以广泛应用于燃气表数据的远程无线集抄。     

基于网络表的数据收集转发器的分析与设计

数据收集转发器是一种对表具进行连续、长时间、自动、实时监测,并进行分析、处理、存储、数据转发以及自动报警的中继设备。介绍了数据收集转发器的硬件结构,提出了数据收集转发器的设计方案,可以广泛应用于燃气表数据的远程无线集抄。     

基于KVM虚拟机的串口转发器的研究与设计

针对串口个数的有限性和串口的可重用性,扩展串口的外设使用显得尤为重要;通过介绍串口及KVM虚拟机,提出了一种基于KVM虚拟机的串口转发器的设计方法,能够让一个串口同时能为虚拟机上的不同系统提供物理上的串口服务,实验表明:同一个物理串口能够并发的、让用户有选择的为不同的虚拟系统服务,解决了物理串口外设有限性的难题。     

CC3000的胶囊内窥镜WiFi转发器设计

为了实现胶囊内窥镜的远程诊断及手持设备实时显示,研究并设计了基于CC3000的WiFi转发器。设计使用STM32F103控制CC3000转发nRF24L01+接收到的胶囊内窥镜图像数据。使用提出的转发器,从胶囊内窥镜获取的图像可直接传输给Android手机进行显示并保存,也可直接将图片上传到远程服务器,医生能远程实时地查看所获取到的图片。实验结果表明,转发器能稳定地转发胶囊内窥镜的图像,并实现所需功能,为胶囊内窥镜的远程诊断提供一种可行方案。     

基于MSP430F149的数据转发器设计

以MSP430F149单片机为核心,设计一种双串行通信的电能表自动抄收系统的转发器,给出转发器的硬件结构框架与软件设计方案。转发器通过三种通信方式实现主机与电表抄表器的数据通信。     

移动互联网背景下医学远程互动教学系统的网络安全体系设计与实践

该文对医学类院校与临床教学医院之间多区域、跨空间远程互动教学系统的现状进行了分析,阐述了在网络安全形势日益严峻和隐私保护的背景下,从安全组网策略和信息安全传输方法两方面进行系统的网络信息安全保障体系设计,保障互动教学内容及所涉及的隐私信息的安全.     

大学计算机基础互动性教学活动设计

根据大学计算机基础课程的培养目标及特点,进行了课堂教学活动的互动性设计.从教师与学生之间的互动、学生与学生之间的互动、学生与课程内容的互动,以及教师、学生与考核评价内容的互动四个方面进行分析,为该课程教学活动的开展提出了建议,其目的是提高教学的有效性,并进而提高大学计算机基础课程的教学质量.     

Design and derivation of the dual transponder carrier ranging system

The accuracy of microwave ranging is mainly limited by the frequency instability of the oscillator that generates the carrier phase signal. A dual transponder carrier ranging method is used to minimize the oscillator noise by combining the reference and the to-and-fro measurements. This ranging approach together with pseudo-noise ranging or other means can be used to measure the inter-satellite distance with a high precision. The pseudo-noise ranging system or other ranging systems help to solve the integer circles while the dual transponder ranging system guarantees the accurate fractional circle. The two satellites work in the master-slave mode. The range measurements are derived on the master satellite while the slave satellite just coherently transfers the received signal, so that the dual transponder ranging system does not need to rely on the time tagging system to synchronize the two satellites. This study first describes the dual transponder carrier ranging system and shows how the system removes most of the oscillator noise components effectively. Then, a detailed design scheme on the frequency planning of the ranging system is presented and the supporting analysis illustrates the feasibility of this system. Based on the design innovation, a laboratory demonstration system is assembled to verify the realizability of the dual transponder ranging system. The experimental results demonstrate that a high level of accuracy (about 30 μm under laboratory circumstance) can be achieved by the use of the proposed dual transponder carrier ranging system.     

The graf system: An interactive graphic system for teaching mathematics

GRAF is a software package developed to visualize real functions of the form y = f (x) of x = x (t), y = y (t). It also allows the study of rotations, translations, enlargements, compositions of functions and so on. The user is given uniform and easy interaction possibilities with the package. GRAF is written in the BASIC language and run on a Tektronix 4051 graphic desktop computer. This package has been developed for didactical application, particularly in high schools. It has been tested with students in many mathematic courses.     

基于笔式交互的几何教学系统原型

设计并实现了一个基于笔式交互的几何教学白板系统原型,该系统允许用户以笔代替鼠标在界面上批注勾画,草绘输入图元,手势编辑界面元素,并支持动态几何。为提高真实感和交互效率,系统中引进了线消隐和笔画规整技术,这也是同类系统少有的。对系统的框架和关键技术进行了讨论,最后给出了系统可用性评估,实验显示系统能够达到理想效果,有较高的实用性。     

WebTOP: A 3D interactive system for teaching and learning optics

WebTOP is a three-dimensional, Web-based, interactive computer graphics system that helps instructors teach and students learn about waves and optics. Current subject areas include waves, geometrical optics, reflection and refraction, polarization, interference, diffraction, lasers, and scattering. Some of the topics covered are suited for introductory level physics students while others are suited for intermediate optics students. WebTOP is developed with a flexible interface to suit the various needs of instructors and students. Many of the features lend themselves to classroom use or self-guided study. WebTOP is implemented using VRML, Java, JavaScript, and VRML’s Java EAI.     

Design of an interactive video-on-demand system

We design an interactive video-on-demand (VOD) system using both the client-server paradigm and broadcast delivery paradigm. Between the VOD warehouse and customers, we adopt a client-server paradigm to provide an interactive service. Within the VOD warehouse, we adopt a broadcast delivery paradigm to support many concurrent customers. In particular, we exploit the enormous bandwidth of optical fibers for broadcast delivery, so that the system can provide many video programs and maintain a small access delay. In addition, we design and adopt an interleaved broadcast delivery scheme, so that every video stream only requires a small buffer size for temporary storage. A simple proxy is allocated to each ongoing customer, and it retrieves video from optical channels and delivers video to the customer through an information network. The proposed VOD system is suitable for large scale applications with many customers, and has several desirable features: 1) it can be scaled up to serve more concurrent customers and provide more video programs, 2) it provides interactive operations, 3) it only requires point-to-point communication between the VOD warehouse and the customer and involves no network control, 4) it has a small access delay, and 5) it requires a small buffer size for each video stream.     

Searching for oil through an interactive graphic terminal

To provide greater speed and flexibility in processing geophysical exploration data, a unique interactive graphic terminal has been developed. Applications include seismic data display with zoom and translation, frequency analysis and filtering, and data correction and modification. Directly interfaced to an IBM 370, model 165 computer, this terminal provides instant access to central computational capabilities, coupled with comprehensive display facilities at the terminal itself. Through the terminal, the user views his results dynamically during processing and iteratively modifies control parameters until those results are optimum.     

异构网络查询终端切换整合系统的研究与设计

提出一种基于终端仿真技术的异构网络信息查询的平台设计方案,利用终端仿真技术来解决当前异构网络信息查询中信息源位置固定、融合困难等问题。针对当前异构信息查询所遇到的问题,设计了仿真硬件平台上搭建软件平台的实施方案,并给出硬件、软件的详细设计。最后设计了一种网络内容审计模型来完成对用户操作的监控记录。     

基于TR069的交互电视终端分组管理设计

终端分组管理的目标是为不同终端分组提供区分服务,这不仅可以满足交互电视业务运营的需求,还可以在不干扰正常用户业务使用的情况下,满足新业务、新运营模式的测试需要.为了实现该目标,首先基于实际系统,设计了终端分组管理的实体关系.在此基础上,采用TR069协议设计了不同分组终端的个性化参数配置、升级及日志采集流程.分析结果表明,采用TR069协议可使系统具备高扩展性、易维护性等特点.     

语义分析互动知识系统的设计与实现

介绍了网络媒体发展的现状,综合提出了一套新的系统——“语义分析互动知识系统,SAIKS”。该系统利用自然语言理解技术对知识库进行智能搜索,自动挑选最佳答案,从而帮助用户方便、快捷、准确地找到所提问题的答案,利用用户的评价反馈完善知识库。研究了系统的关键模块,详细描述了系统的体系结构,构建了实验体系,并得出了初步试验结果。