Yong-Moo Kwon

Network Synchronization for Collaborative Work in Distributed Environment

In the every day life of the people, the Internet is widely used. Currently over 1.9 billion people have one or more email addresses and over 600 million people use the Facebook. People are collaborating via the Internet more and more. When people are collaborating through the Internet, the differences of the message delivery delay are the biggest problem that disturbs the collaborative work over the network. To solve the differences of the message delivery delay, we introduce the delay-gap method. An experimental code have been implemented and the efficiency of the delay-gap is presented through the results from the experiment that have many participants.

Web-based Social Collaborative Authoring Technology

This paper describes collaborative social authoring technology using web-based distributed user interface (DUI). In view of collaboration, web is one of the most common user environments on various systems of desktop and mobile devices. This paper addresses the DUI issues for the support of multiple kind of devices, such as PC, smartphone, tablet and so on. In our system, we define CAM (Collaborative Authoring Metadata). CAM is used for the exchange of authoring intention of each user during the collaborative authoring. We define elements of CAM that is useful for exchanging information among distributed users. Our system also provides the recommendation function for referring and adding the related media from the participants’ social media service account during the authoring process.

Research on Virtual World and Real World Integration for Batting Practice

Utilizing virtual environment technology for sports exercise has been done by several researchers. However, virtual world such as Second Life not yet support for their user to doing real sport exercise. In this paper, we proposed system that enables users to do batting practice in virtual world using real world pitching data from professional pitcher that provided in web. Users can bat practice as if practicing with professional pitcher. Besides, we introduce batting experience representation. With this representation virtual world users can share their practice experience to other people. The purpose is to get more suggestion to improve users batting skill.

Tangible Social Content Service System: Making Digital Technology Easier to Use by Elderly and Its Usability Evaluation.

Digital world is surrounded by biggest challenges of changing communication mediums with rapid increase of technology and social network services. Younger generation immerses towards enlarge smart techniques on competence basis, while elderly suffered by social isolation. However, the intergenerational communication is challenged by distinction in media preferences and interaction mediums which lead to physical and mental disorder and social isolation in elderly people. The tangible social content service system using the well acquainted UI with elderly is developed, which embeds live voice message in digital photos and easy connector with social network service (Facebook) for the independent living and socially and mentally retired generation. Now a day, smartphone and messenger services are widely used by elderly. So, messenger based voice message service is also developed based on KakaoTalk Plus Friend API for smartphone. After development stage the usability evaluation of web-based system for elderly oriented service is conducted by seniors to examine two-way communication techniques among the younger generation and elderly with the unique medium of photos with elderly friendly tangible user interface (UI).

Photo Alive! Application and method for intergenerational social communication

Rapid increase of technology and escalation of Social Network Services (SNS) are widely being used for elderly life improvement and support interaction among family members. Advancement in technological tools and rapidly changing social communication mediums bring intergenerational gap. Due to an increase of digitalization, seniors are left behind in technological skills that caused loneliness and social isolation. Elderly need to introduce with new technological means, an opportunity has revealed for better social and technological integration. We propose a system that provides Intergeneration Social Communication (ISC) among elderly people and family members using family photos. Family Photos provide interaction with the viewer being a communication medium among members of different age groups create emotional attachment. On one hand, high tech savvy younger generation prefer smartly modified technology while on the other hand, older age people are far away from new interaction techniques and prefer simple technology. In this paper, we proposed a system “Photo Alive!” and camera based smartphone app concerning capture photos and send to TV based “Photo Alive!” as well as on SNS, named “Photo Alive!” This app facilitates to remove intergenerational gap among older and younger generation by providing an elderly friendly platform by using simple and smart interfaces and techniques like Remote control, touch pad and voice. Photo Alive! Service focus age group in social media through family photos with the objective of intergenerational social communication providing family photo view service, photo tagging service and photo-based interactive service to bring elderly people closer to family members, friends and loved ones for the cultivation of family togetherness of all generations. After development stage, our system will be evaluated by easily accessible techniques for elderly through the provision of uncomplicated and smart elderly friendly interfaces.

Photo Alive!: Elderly Oriented Social Communication Service

Technological predilection among different generations for social interaction affected intergenerational communication gap. The rapid intensification of internet and increased technological mediums create digital divide among younger generation and elderly. Regrettably most elderly are unable to use Social media. Elderly people left behind in many areas of digital services platforms and technological skills. In this paper, we proposed a unique system for intergenerational communication based on digital family photos named as “Photo Alive!” to diminished intergenerational interaction problems. The development includes implementation and design of photo-based tagging service and photo-based interaction service with smart aging techniques. We concentrate on captivate of elderly in social media using digital photos with specific goal to enhance social interaction with family members, friends, and younger generation by providing elderly easy user interaction mediums on elderly tangible social service. The preliminary evaluation results indicate that the system is elderly friendly for social communication.

Networked Baseball Cheering System Based on Tangible Media

our research focuses on developing Virtual Supporting System (VSS). In this paper, we implement tangible baseball supporting system on virtual world. In virtual world, Second Life, Croquet, Wonderland, etc. we can enjoy shopping, watching movie, dancing and so on. In this paper, we discuss about collaborative supporting method among virtual world users and sensory effect using wearable hap tic devices and smart-phone. Also, we developed avatar control, motion based cheering and chatting using smart phone and wiimote. The main idea of this paper is to extend virtual worlds mean by adding collaborative group cheerleading and hap tic devices.

Social Media based Collaborative Tangible Sports Service

This paper presents our development of tangible baseball supporting system based on social media technology for providing new experience of collaborative virtual cheering as future of digital media application. Especially, this paper focuses networked collaboration on virtual world. This paper introduces (1) network event synchronization method among participants in the situation of different delay network, (2) application of social network service such as twitter for in-situ information, (3) tangible integration in virtual cheering. The evaluation of our system is also shown in terms of user’s subjective feeling in several aspects such as network issue, social network service and tangibility.

Networked Collaborative Group Cheerleading Technology: Virtual Cheerleader Experience

In many virtual world, we can enjoy shopping, watching movie, dancing, etc. However users enjoy these entertainments by oneself. Although, in virtual world, most of virtual services provide entertainments and social activities, there are no feedback to real world users. In this paper, we discuss about collaborative cheerleading method among virtual world users and Sensory effect using wearable haptic wrist guard for providing more interactive and immersive experience. The main idea of this paper is to extend virtual world’s mean by adding collaborative group cheerleading and haptic devices.