An investigation of a cost-effective solution for multimedia medical information management

The unstructured paper-based medical document contains heterogeneous data formats, such as text-based medical reports, graphics data, such as electrocardiograms, radiographic snapshots, such as Chest X-rays and MRI, possibly motion image sequences, such as angiograms, and verbal comments of physicians in surgeries. These multimedia information are currently stored in paper folders as print-outs, films, or tapes. The information has a high risk of being misfiled or wearing out. Advances in multimedia technology have made possible the authoring, storage and presentation of medical information in a systematic and easily-accessible way. This paper discusses the background and rationale that led to the design and prototyping of a computerized cost-effective multimedia medical document system.     

屏幕图形随机存储内存驻留C语言程序的实现

本文以一个屏幕图形随机存储程序为例，讨论了用高级语言编写内存驻留程序的一般方法，并给出了ＴＣ＾＋＋３．０源程序。该程序采用独到的驻留标志，并具有ＴＳＲ撤出功能。     

Hypermedia Use in Group Work: Changing the Product, Process, and Strategy

Hypermedia structures have beenintegrated with CSCW functionality to develop theDOLPHIN system, an electronic meeting roomenvironment. In this paper, a study is reportedinvestigating how the DOLPHIN environment affectsgroup work. Different aspects of group problem solvingwere examined to understand the effects of workingwith hypermedia: the group's product, cognitivefactors, and the group process. The results showedthat groups can easily work with hypermediastructures, and that these structures influence groupsto produce a different product, to use a differentstrategy, and to use a different collaborative style,namely of dividing up their labor. The experimentalresults are explained in a model which suggests theinvolvement of both procedural and semantic componentsin hypermedia use. We discuss wider implications ofhypermedia for CSCW and group work.     

多媒体超媒体技术与RS＆GIS教学软件的设计

有针对性地提出了遥感和地理信息系统（ＲＳ＆ＧＩＳ）课程的教学软件设计思想，并在实践上充分利用多媒体超媒体技术，实现软件系统的高起点。作为一个开端，为在２１世纪实现全方位、立体化的崭新教学手段和方法进行了探索，以促进遥感地理信息系统这一技术工具的进一步推广。     

The evolution of a collaborative authoring system for non-linear hypertext: A design-based research study

Learning in complex and ill-structured knowledge domains requires accommodation of multiple perspectives embedded in authentic activities and the reconciliation of those perspectives with personal beliefs resulting in conceptual change. Cognitive flexibility hypertext systems support that process by enabling learners to explore authentic cases from multiple thematic perspective. Study 1 showed that knowledge exploration alone is insufficient to engage those conceptual change processes. So we reasoned that providing learners with environments that engage more constructive, personal knowledge representation activities would better support conceptual change. However, these environments rarely support learners in structuring, integrating, and representing their personal beliefs with other perspectives. That became the goal of our iterative research process.     

Exploring MARS: developing indoor and outdoor user interfaces to a mobile augmented reality system

We describe an experimental mobile augmented reality system (MARS) testbed that employs different user interfaces to allow outdoor and indoor users to access and manage information that is spatially registered with the real world. Outdoor users can experience spatialized multimedia presentations that are presented on a head-tracked, see-through, head-worn display used in conjunction with a hand-held pen-based computer. Indoor users can get an overview of the outdoor scene and communicate with outdoor users through a desktop user interface or a head- and hand-tracked immersive augmented reality user interface.     

Cooperative hypermedia an enabling paradigm for cooperative work

This paper describes the integration of computer-supported cooperative work (CSCW), multimedia, and hyperstructures into a single framework calledCooperative Hyper Media (CHM). The concept of CHM supports groups of users acting on a single hypermedia document. Cooperative HyperMedia is a layered concept that integrates several notions related to the production of hypermedia documents, namely, document contents, access, and organization. To test the applicability of the concepts of this approach to CSCW we have realized a generic CHM editing architecture (Co MEdiA), telecommunication mechanism for multimedia objects (Tele Media), and service for cooperative work over long distances for time-dependent media (MISTER COOL).     

HyOctane: a HyTime engine for an MMIS

We are interested in the development of distributed multimedia information systems that use the HyTime international standard as the data model and interchange format. We have developed and implemented a prototype system in which interactive multimedia presentations can be stored and retrieved. Sample document instances are externally encoded in HyTime and stored in the database using the HyTime data model. The architecture and operation of our system are presented. Issues related to using a HyTime engine for general multimedia presentation and interchange are discussed.