Multimedia Collaborative Environment Research Articles

CoAP 기반 게이트웨이 소프트웨어 스택에서의 오류 동기화

사물 인터넷과 멀티미디어 협동 작업 환경의 필요성을 기술하고, 그 기반 하에 CoAP 기반 스택에서의 오류 처리에 대해서 제안하였다. 본 논문은 CoAP 기반 게이트웨이 소프트웨어 스택에서의 오류 동기화에 대한 내용을 기술한다. 이 시스템은 CS_EDA, CS_ESA로 구성되어 있다. CS_EDA는 CoAP 기반 게이트웨이 소프트웨어 스택 환경에서 멀티미디어 원격 제어를 위하여 오류를 감지하는 에이전트이다. CS_ESA는 CoAP 기반 게이트웨이 소프트웨어 스택 환경에서 멀티미디어 원격 제어를 위하여 오류를 동기화하는 에이전트이다. CoAP 기반 게이트웨이 소프트웨어 스택에서의 멀티미디어 공동 작업 환경의 관점에서 오류 동기화는 협동 작업에 참가하는 참가자에게 상호작용적으로 오류를 동기화한다. The necessity of IoT(Internet of Things) and Multimedia CSCW is described, and error control for multimedia CSCW(Computer Supported Cooperated Works) based on CoAP stack is suggested. This paper describes an error synchronization running on gateway software stack based CoAP. This system consists of an CS_EDA, and CS_ESA. CS_EDA is an agent that detects an error for multimedia distance system based on gateway software stack based CoAP environment. CS_ESA is an agent that is an error synchronization system for multimedia distance control based on gateway software stack based CoAP environment. From the perspective of multimedia collaborative environment of gateway software stack based CoAP, an error application becomes another interactive presentation error is synchronized with participants engaged in a cooperative work.

운송 안전 서비스를 위한 IP-USN 게이트웨이 소프트웨어 스택에서의 오류 동기화

This paper describes an error synchronization running on IP-USN gateway software stack for transportation safety service. This system consists of an TS_EDA, and TS_ESA. TS_EDA is an agent that detects an error for multimedia distance system based on IP-USN gateway software stack environment. TS_ESA is an agent that is an error synchronization system for multimedia distance control based on IP-USN gateway software stack environment. From the perspective of multimedia collaborative environment of IP-USN gateway software stack for transportation safety service, an error application becomes another interactive presentation error is synchronized with participants engaged in a cooperative work.

분산 멀티미디어에서 응용 QoS를 위한 신뢰성에 관한 연구

The relationship of information collection and utility is relationship of man to man, but is developed object to object by information communication and control system. This paper suggests a multimedia collaboration environment based on M2M(Machine to machine). We propose a study on reliability for application QoS in distributed multimedia. When it recovers, the characteristic of this system is to use the same method to get back again it as it creates a session.

운송 안전 서비스를 위한 멀티미디어 복제 형 구조

정보 통신과 멀티미디어 기술의 발달로 사물 지능 통신과 멀티미디어 공동작업 환경, 운송 안전 서비스에 대한 관심이 증가하고 있다. 운송 안전 서비스를 위한 Shepherd 환경 기반 멀티미디어 복제 형 구조에 대해서 제안한다. 정보의 수집 및 활용 관계가 사람 대 사람에서 사람 대 사물의 관계, 사물 대 사물의 관계로 변화되어 사물 간 상호 정보 교환 및 제어 시스템을 통해 사물이 자율적으로 관리하는 형태로 진화되고 있다. 본 논문에서는 사물 지능 통신에서 멀티미디어 사이버 공동 작업 환경의 설계를 제안한다. 이 구조에 의하여 멀티미디어 공동 작업 환경과 결함허용 등에 대한 연구를 쉽게 할 수 있다. 사물 지능 통신 기반 시스템은 하나의 노드 또는 자원이 결함을 발생하더라도 전체 시스템에 영향을 미치지 않기 때문에 운송 안전 서비스 등의 설계를 위한 좋은 조건을 지닌다. Because of development of information communication and multimedia technology, the focus of M2M(Machine to Machine) intelligent network, multimedia collaboration environment, and transportation safety service is increased. This paper describes a multimedia replicated architecture based on Shepherd environment for transportation safety service. The relationship of information collection and utility is relationship of man to man, but is developed object to object by information communication and control system. This paper suggests a design of multimedia cyber collaboration environment based on M2M. This structure can make multimedia collaboration environment and fault tolerance, so on easily. Because M2M system does not affected to all system in spite of occurring to fault to a node or resource, it has a good condition for design of transportation safety service running on M2M.

PECOLE: P2P multimedia collaborative environment

PECOLE (Peer-to-pEer COLlaborative Environment) is a fully decentralized multimedia collaborative environment that supports a wide range of collaborative multimedia applications, including chat, shared browsing, shared telepointer, multipoint-to-multipoint audio/video conferencing and multilingual collaboration. PECOLE can intelligently run on very constrained resources, is highly resilient, scalable and does not rely on dedicated servers. Instead, PECOLE is built upon a Peer-to-Peer (P2P) overlay network, using SUN's JXTA framework and SWT technology. In this paper, we present the architecture and implementation of PECOLE with the performance results of the tests we conducted.

Investigating Preschool Children’s Mathematical Engagement in a Multimedia Collaborative Environment

The purpose of this study was twofold: (a) to investigate the effects of preschool children’s mathematical engagement in multimedia collaborative learning (MCL) on various skills of mathematical knowledge; and (b) to examine the differential effects of MCL on mathematical knowledge of younger (M = 4.5) vs. older (M = 5.5) preschoolers. Participants were 76 preschoolers from four kindergartens who were assigned randomly to two learning conditions. One group was exposed to a multimedia environment with collaborative learning (MCL), and the second group was exposed to collaborative learning without multimedia (CL). Findings indicated that the MCL preschoolers improved significantly on various skills of procedural and conceptual knowledge regarding numbers and operations over the CL preschoolers. Positive effects of the MCL condition were found on both the younger and older preschoolers. However, the younger MCL preschoolers improved their mathematical knowledge more than the older ones. The theoretical and practical implications of collaborative and multimedia learning are discussed.

Collaborative multimedia environment for chess teaching

Chess teaching has not made extensive use of the so-called new technologies; in most cases, we just see a tutorial action in which e-mail is used to exchange moves that will be reproduced later by the student, either on a physical board or by means of any of the various chess-playing programmes. This paper describes a seminal initiative for chess schools; we propose a method for teaching and learning how to play chess, based on a web-based collaborative multimedia environment, called Chess Tutor. This collaborative environment facilitates the creation of groups in which one can learn the game by cooperating with other students and under the supervision of a Chess Master. We could point out quite a few remarkable aspects about this project, which has been running for about two years; however, this paper will focus on the cooperative scenarios used to carry out the teaching and learning process.

웹 기반 멀티미디어 공동 작업 환경에서의 동기화 오류 제어 시스템

We propose ESS_WMCE. This paper explains the design and implementation of the EDSS running on ESS_WMCE. EDSS is a synchronization error control system for web based multimedia collaboration environment. We have an error detection approach by using hooking method. The technique of an error transmission is a mended model of utilizing an application sharing system. DOORAE is a good framework model for supporting development on application for computer supported cooperated works. It has primitive service functions. Service functions are implemented with an object oriented concept. It is a system that is suitable for detecting and sharing a software error rapidly occurring on web based multimedia collaboration environment by using software techniques. It is able to share an error as well as providing URL synchronization to access shared objects. When an error occurs, this system detects an error by using hooking methods in MS-Windows API(Application Program Interface) function. If an error is found, it is able to provide an error sharing to access shared objects.

Computer-aided Musical Performance with the Distributed Rubato Environment

Software tools for computer-aided analysis and performance of musical material offer many new opportunities for musicologists, composers and performers. The article gives an overview of Classic RUBATO and its implementation of performance theory. It discusses limitations of Classic RUBATO and presents the architecture of Distributed RUBATO, a collaborative multimedia environment for music research. Particular focus is put on the PerformanceRubette, a unit for computer-aided musical performance. It has support for complex instrument parameter spaces and can perform musical gestures. The calculated performances can be used for modeling virtual artists performing in an audio-visual environment.

A Shared Multi-Media Design Environment for Concurrent Engineering over the Internet

The Internet is currently an important resource for businesses to conduct activities ranging from basic communication to data exchange. In addition, the Internet is fast becoming an important portal for concurrent engineering applications. The Virtual Design Studio (VDS) presented in this paper is to construct a virtual design environment over the Internet in order to over come geographical constraints, and satisfy the major issues of concurrent engineering. Traditional design activities have been studied and implemented in the VDS to enable effective and efficient collaborative design. In addition, the proposed virtual design environment also supports both the product design and distributed communication tools used by designers. The aim of VDS is to integrate the exist ing information technologies (such as remote file transfer, multimedia and virtual reality among others) into the design process and to ex plore the possibility of extending collaborative design system over the Internet. This infrastructure will enable the establishment of distrib uted design offices in a global environment by means of the Internet. As such, collaborative design resources can be made readily available to industries, research institutions and educational institutions. CyberCAD is the application developed to support the realization of VDS. Remote file transfer and platform independence have been implemented in CyberCAD to enable the sharing of resources. CyberCAD provides a powerful collaborative CAD system running on a PC based platform. A multimedia communication enabled CAD conference module has been integrated into CyberCAD. Video and audio communications provide the collaborative multimedia environment, which overcome the geographical limitation in traditional "face to face" collaboration and enhances interaction between designers. Drag and drop method has been adopted in the proposed CAD conference module for re mote design information sharing.

Case-based support in a cooperative medical diagnosis environment.

Many medical services are often not available to people living in remote areas because of the lack of medical specialists. This problem would be alleviated if a suitable environment was designed to allow physicians to collaborate and exchange ideas with centrally located medical specialists. This article describes an ongoing research project to design and implement a collaborative multimedia environment to allow medical specialists to cooperate in diagnosis. The environment will support remote database access for medical images, the retrieval of relevant medical cases to support diagnosis, and communication among participants through telepointers and image annotation by free-hand drawing.

Design and implementation of a distributed multimedia collaborative environment

Multimedia applications are being developed and used for many aspects of our lives today. New high-speed, broadband networks have emerged and made the operation of these high-bandwidth requiring applications readily feasible. However, the development of distributed multimedia applications and efficient and reliable operation of these applications are still very difficult. This paper presents a flexible and reliable distributed multimedia collaborative environment called MAESTRO which provides a rich multimedia collaborative service API and which provides distributed multimedia services that can be used to develop a variety of multimedia applications easily. MAESTRO has been designed using CORBA. The system as well as applications running on it are managed and controlled in order to provide a reliable and efficient multimedia operations environment. We validate our claim by developing a number of multimedia applications using our distributed multimedia system and by using them for supporting distributed collaborative scientific and engineering research experiments.

Scientific problem solving in a distributed and collaborative multimedia environment

We describe a distributed and collaborative environment for cooperative scientific problem solving. SHASTRA is a highly extensible, distributed and collaborative design and scientific manipulation environment. At its core is a powerful collaboration substrate - to support synchronous multi-user applications, and a distribution substrate - which emphasizes distributed problem solving. The design of SHASTRA is the embodiment of the following idea - scientific manipulation toolkits can abstractly be thought of as objects that isolate and provide specific functionality. At the system level, SHASTRA dictates architectural guidelines and provides communication facilities that let toolkits cooperate to utilize the functionality they offer. At the application level, it provides collaboration and multimedia facilities that let users cooperate. A synergistic union of these two elements yields a sophisticated problem solving environment. Sample applications that we have attempted in SHASTRA include custom design of human hip prosthesis, shape optimization of the connection between a jet engine and an airplane wing, and efficient computation of molecular “docking” algorithms for drug screening.

Shastra: multimedia collaborative design environment

A distributed environment that supports multimedia interfaces, Shastra strengthens collaboration in scientific and engineering design. Implemented on a desktop system, it provides an infrastructure for user- and application-level cooperation. We describe the Shastra architecture and tools, then walk through a scenario that shows how it enhances collaborative problem solving. >

Software architecture of DiCE

Recent advances in network technology has significantly increased the network bandwidth as well as enriched the set of network functions, enabling a rich set of computer assisted collaborations. DiCE (Di stributed C ollaborative E nvironment) is a multimedia collaboration environment that is being developed at the IBM T. J. Watson Research Center. The challenge of DiCE is to explore the advanced functionalities enabled by high speed networking and multimedia computing technologies to develop effective computer assisted systems that will significantly increase the productivity of collaborations. The main objectives of DiCE are, first, to design an efficient multimedia collaboration environment, and then to prototype the design as the base for the development of a workstation based, hub-free (fully distributed) multimedia conferencing system.