JPEG 2000在数字图书馆的应用

论文介绍了JPEG2000图像压缩标准的特点及其在数字图书馆图像压缩、基于内容的检索、非线性视频编辑等方面的应用。     

开放源代码的数字资源管理系统DSpace和Fedora的分析和比较

对两种流行的开放源代码的数字资源管理系统DSpace和Fedora进行了研究，对其体系结构和主要功能特点作了较为系统的分析和比较，为关注这方面研究的同行提供一些借鉴和参考。     

FOXPRO源程序在线自动生成的分析与设计

本文分析了FOXPRO源程序的在线自动生成的设计思想和设计方案,并根据几个实例介绍了实现的全过程     

Instructor Use of Educational Streaming Video Resources

Although a substantial majority of academic libraries now provide streaming video, the literature contains few studies which focus on how such resources are used. This article presents the results of a qualitative research study consisting of in-depth interviews with 18 instructors who use of one category of streaming video resources, educational videos, which are important because they are sold a higher price than most individuals can afford, and thus are typically only available to instructors through the library. The study's main findings are that instructors think educational streaming video resources compare favorably to commercial and non-streaming alternatives in most respects and use them whenever possible, that the primary benefit of these resources is to facilitate better use of limited class time by enabling instructors to assign videos as outside-of-class viewing, and that the library is not the primary means instructors use to discover new educational streaming video resources. Additional insights are provided into factors that academic libraries should consider when deciding which resources to invest in, which acquisition models to pursue, and what marketing strategies to employ to ensure maximum usage.     

Two Thousand Students,One Librarian: Balancing Depth and Breadth of Library Instruction for Online Graduate Students

Many librarians struggle with how to balance scalable instructional offerings with more personalized instruction for online students—scale tends to come at the cost of personalization and vice versa. This paper will discuss three methods for connecting with online students that range from one-to-one personalization to widely scalable instruction: individual consultations, scaffolded instructional webinars, and asynchronous video tutorials. The student engagement with each type of instruction will be discussed, with ideas for future directions provided.     

Power Struggles,Regulation and Responsibility

This article explores the relationship between the British Board of Film Classification (BBFC) and government during the implementation of the Video Recordings Act (VRA). It considers the public Parliamentary debates about the VRA, and places them alongside private correspondence between the Home Office and the BBFC, and internal BBFC material from the recently catalogued James Ferman papers held at the BFI. As well as exploring the introduction of the VRA, this article also aims to briefly consider its implications for the BBFC, how they set about interpreting and implementing its stringent recommendations and how this impacted upon the organisational working practices of the Board. While the VRA was without doubt one of the most significant pieces of legislation within the history of film regulation in Britain, the time is ripe for its reappraisal and with it a re-evaluation of the role played by the BBFC in securing statutory regulatory powers.     

视频组播分层解决方案的研究

组播作为一种节约网络带宽、降低网络负载的有效手段,在视频传输中具有广阔的应用前景。本文针对组播中的会话内公平性问题,深入研究了多速率组播分层解决方案的实现机制,并基于目前的研究现状和进展指出了分层组播现存的有关问题。同时为分析分层解决方案在解决组播会话内公平性问题中的有效性,文中通过网络仿真器NS进行了实验评价。     

教育评价改革如何应对AI快速发展的挑战？

继ChatGPT之后,文生视频Sora横空出世。为了应对人工智能快速发展带来的挑战,我国学校教育正在加快推进 AI+教育,但是 AI+教育受唯分数、唯升学、唯学历的教育评价体系的影响,存在知识化、应试化倾向,人工智能在教育领域的应用还主要服务于应试,这既不符合教育改革方向,也难以培养适应人工智能时代的创新人才。应对人工智能快速发展的挑战,关键在推进教育评价改革,要坚定破除唯分数、唯升学的教育评价顽瘴痼疾,要在推进教育评价改革过程中,利用人工智能技术提高评价的效率与公信力。     

移动网络视频传输控制研究

移动网络视频传输控制技术的关键问题是如何避免拥塞,并在丢包存在的情况下尽可能提高视频质量。文章基于无线网络平台,为了保证解码端的正确执行,使用了一些传输控制技术来减少传输错误造成的影响,并基于RTCP／RTP协议研究一些视频传输中的关键问题如误差掩盖、差错控制和速率控制等,针对视频传输中的速率控制问题分析了几种方法和思路。