液晶投影机的使用及其维护

随着多媒体投影的广泛使用，多媒体投影机已成为大幅投影的主要设备。本论述了液晶投影机在使用和维护中应注意的一些问题。     

NECMT系列投影机

国际著名投影机品牌NEC近日持续发力,向教育推出了可满足教育信息化时代教学场所演示应用需求的新款多功能型液晶投影机MT系列投影机。MT1065+/MT1060+是NEC公司专为教育用户精心打造的多功能型投影机产品,运用LCD投影     

简讯

雅图投影倾力教育深圳市雅图数字视频技术有限公司目前针对不同用户的需要,推出多款便携式LCD投影机。ACTO多媒体液晶投影机的突出性能主要表现在高亮度:1000-3500ANSI流明,而其AT-X9350型的高亮度,更充分体现了彩色液晶投影机在大型场所发挥的不可比拟的功能;体积小、重量轻:重量仅3公斤左右,大小体积与笔记本相仿;图像清晰,画面精细:采用国际数码信号处理技术,画面逐行扫描,98%高均匀度饱和画面,画质更精细;防辐射功能:解决了现在的CRT显示屏的图像闪烁和辐射对人体造成的伤害;多功能:能于PC、Mac、VIDEO、S-VIDEO相容,还与I…     

在数学课堂教学中让交互式电子白板“光芒四射”

一、什么是交互式电子白板 电子白板是汇集了尖端电子技术、软件技术等多种高科技手段而研发的高新技术产品,它通过应用电磁感应原理,结合计算机和投影机,可以实现无纸化办公及教学。交互式电子白板可以与电脑进行信息通讯．将电子白板连接到PC,并利用投影机将PC上的内容投影到电子白板屏幕上,在专门的应用程序的支持下,可以构建一个大屏幕、交互式的教学环境。     

电子白板与语文教学

1概述电子白板,又称是电子交互白板,是一种新的高科技电子教学系统,由硬件电子感应白板和软件白板操作系统集成。电子白板集传统的黑板、计算机、投影仪等多种功能于一身,使用非常方便。电子白板可以与电脑进行信息通讯,将电子白板连接到PC,并利用投影机将PC上的内容投影到电子白板屏幕上。同时,在专门的应     

专业NEC新推VT70投影机,高性价比新领军

专业NEC投影家族再添新成员：VT470 、VT670 、VT675 三款液晶投影机，延续了VT系列一贯的优点，此三款投影机的产品功能更丰富，以高性价比、出众外型，号称实用经济的高品质投影机。     

专业NEC新推VT70投影机，高性价比新领军

专业NEC投影家族再添新成员：VT470+、VT670+、VT675+三款液晶投影机，延续了VT系列一贯的优点．此三款投影机的产品功能更丰富，以高性价比、出众外型．号称实用经济的高品质投影机。     

教育用户福音 宏碁S5201M将互动投影发挥到极致

互动投影技术凭借着灵活多变的使用模式以及配合短焦技术的应用,适应能力超强,而且多合一的功能组合远远降低了传统电子白板的开支,节省了购买成本的同时也节省了用户的使用成本,更简单易用,因此受到了很多教育用户的大力推崇。宏碁S5201M就是互动投影机中的佼佼者。     

教学投影机配套设备的选购

介绍了选购投影机配套设备投影屏幕、视频展示台、中央控制系统、电子白板的技术要求和注意事项。     

电子白板在生物教学中的使用现状及对策

本文所指的电子白板为交互式电子白板,电子白板是由感应白板、液晶投影机和计算机等硬件以及配套的软件集合而成,是一种输入和输出设备成为人机和人际交互的智能平台。近年来,电子白板作为一种新的现代教育技术装备在生物教学中的使用日趋广泛,成为师生提高课堂教育教学质量的得力助手。1电子白板在生物教学使用中存在的现状1.1电子白板的使用效率低设计多媒体教学课件需要花很多的时间和精力,有部分教师缺乏行动;有些学校的电子白板配置太少,仅有的几个电子白板又固定在少数几个班     

Large Lecture Halls: Whiteboards,Not Bored Students

Large lecture halls are a common feature of many undergraduate mathematics programs. However, teaching effectively in a large lecture hall can be challenging. This paper discusses the use of personal whiteboards for students as a way to make large lecture halls a more productive learning environment. I discuss the logistics of using whiteboards, setting up norms, and provide examples of supporting instructional techniques. These techniques are: warmup problems, think-pair-share, group work, and student presentations. To support this exposition, I draw on personal reflections as an instructor and report from a brief student survey on their experiences using the whiteboards.     

The impact of collaborative video analysis by practitioners and researchers upon pedagogical thinking and practice: a follow‐up study

The ‘T‐MEDIA’ project analysed and documented how teachers exploit the use of projection technologies – data projectors and interactive whiteboards (IWBs) – to support learning in secondary‐school subject lessons. The research involved collaboration between university researchers and four pairs of UK teachers (of English, mathematics, science and history) in an intensive process of systematically analysing video recordings of classroom activity and other data in depth. Our goals were to assist teachers in articulating the pedagogical rationale underlying their practice, and uniquely, to engage them in theory building about strategic technology use. This paper reports on a follow‐up study carried out one year after the collaborative analyses in order to assess the subsequent impacts of the process of critical reflection. The eight teachers were questioned using a semi‐structured interview technique that allowed us to elicit structured and personalised accounts of impact on pedagogical thinking and practice and the supporting or constraining factors. The findings suggest that for at least some, the sociocultural theory introduced and reformulated during the analyses provided a powerful analytical lens upon emerging practices, including those not incorporating technology. All of the participants reported lasting effects upon their own thinking and, except where external constraints operated, on teaching practices. The approaches developed during T‐MEDIA had additionally been disseminated to and adapted by other subject colleagues. The study illustrates how collaborative analysis of lesson videos can be used to engage teachers in deep reflection, critique and debate. This approach supports the development of an analytical scrutiny of classroom teaching and offers a significant professional development opportunity. In particular, under conditions of sensitive support, teachers will readily accommodate theoretical constructs into specific areas of professional thinking and practice.     

从技术原理浅谈高校对多媒体投影机的选购

随着计算机和多媒体技术的快速发展,投影机已广泛应用于教育教学领域,并成为高校不可或缺的教育手段。而技术原理不同的投影机所表现出来的性能也不尽相同,本文通过对LCD和DLP投影机技术原理的介绍来分析其各方面性能和技术特点,并给高校选购投影机提供一些建议。     

框架式电子白板的教师关注差异研究——基于香港学校的分析

电子白板在香港中小学的应用越来越广泛.作为一项教育中的技术创新,教师在应用框架式电子白板时会表现出不同关注.文章采用教师关注度模型,探究教师在应用这项创新技术时在评价、信息、管理、影响、再关注五个维度所表现的特点和差异.研究发现,教师在应用框架式电子白板时有不同关注,并且在不同维度的侧重点不同;不同学段的教师对白板的关注存在差异;使用年限不同的教师具有不同的关注.     

交互式电子白板——课堂教学技术的新趋势

交互式电子白板是近年来国际上推出的一款全新的、功能强大的高科技教学工具,它整合了现代多媒体教学的优势,同时又保持了传统的普通黑板这一教学手段的优点,因而更能发挥课堂教学的潜能,从一定意义上说,它代表了课堂教学技术发展的新趋势.     

现代教育手段在农民科技培训中的运用

传统的教育培训手段,已不适应对现代农民的技术培训。现代教育手段,即把幻灯、广播、电视、互联网等应用于对农民的各种培训,如能采取恰当的措施做好这些工作,必能取得事半功倍的培训效果。     

投影机的接口

一般用户使用投影机,其实就是对输入输出接口的操作。投影机的接口按照用途可以分成音频接口、视频接口、控制接口和综合接口四种。USB连线投影,无线网络投影等是当前的热门技术。投影机的接口发展呈现出数字化、高速化、集成化、轻便化等特征。     

Cartridge-Projector Systems for 8 mm. Films—A Short Technical Report on the DIDACTA Exhibition 1970 in Basle

At the 1970 Didacta exhibition in Basle, several equipment manufacturing companies exhibited their cartridge-loading projectors for 8 mm. films. All of the projectors shown were prototypes; mass produced equipment will not be available before the Photokina Exhibition in autumn.     

Sim Wall： a practical user-friendly stereo tiled display wall system

SimWall is a user-friendly, stereo tiled display wall system composed of 18 commodity projectors operated by a Linux graphics cluster. Collaborating together, these projectors work as a single logical display capable of giving a high-resolution show, large-scale, and passive stereo scene. In order to avoid tedious system setup and maintenance, software-based automatic geometry and photometric calibration are used. The software calibration is integrated to the system seamlessly by an on-card transform method and is transparent to users. To end-users, SimWall works just as a common PC, but provides super computing, rendering and displaying ability. In addition, SimWall has stereoscopic function that gives users a semi-immersive experience in polarized passive way. This paper presents system architecture, implementation, and other technical issues such as hardware constraints, projectors alignment, geometry and photometric calibration, implementation of passive stereo, and development of overall soft- ware environment.