Hanku Lee

A TMO Based Real-Time Model: Supporting u-GIS Informative Construction Technology Innovation

In the real world it is very difficult to implement real-time models in uncontrolled distributed environments and to support well-defined interfaces from real-time systems to external systems. An ongoing project for ubiquitous computing environments, u-GIS based informative construction technology innovation project needs a system to handle and control various data (sensor data, visual data, equipment status data, etc.) generated from remotely distributed construction sites in real time. The main purpose of this paper is to study how to support real-time applications, to design TMO-based distributed real-time processing techniques for real industrial applications, and to develop a TMO-based real-time model with less strict real-time constraints in ubiquitous environments. We propose an easy-to-use TMO-based real-time model with less strict real-time constraints for u-GIS based informative construction technology innovation project.

Distributed multimedia streaming service algorithms over cloud computing environment

Although cloud computing provides an infrastructure for transcoding, distributing, and streaming content in order to delivery scalable rich multimedia applications and services on the Internet, specific challenges of task management, load balancing, and fault tolerance remain. Previously, to address these issues, we proposed a cloud-based distributed multimedia streaming service (CloudDMSS). CloudDMSS is designed to run on all major cloud computing services and is highly adapted to the structure and policies of Hadoop. In this paper, to improve system’s capabilities, we propose four important algorithms with architectural components: content replication, system recovery, management server, and streaming resource-based connection (SRC) algorithms.

An Adaptive Meeting Management System for Heterogeneous Devices

Various electronic devices such as a smart phone, a smart pad and a smart TV become popular. Digital content for those devices and many interesting and valuable social network services(SNS) become available for the devices. It follows that consumers want to experience same digital content and SNS using heterogeneous devices. However, it is difficult to transform every content and SNS for new types of devices in time. We propose an adaptation framework which aims to convert SNS content into various types of devices by considering their capacities, interaction types and types of SNS activities.

An intravenous injection simulator using augmented reality for veterinary education and its evaluation

This paper proposes a simulator for veterinary education based on augmented reality. We selected an intravenous injection procedure for the simulation because the injection procedure is the most frequently used procedure during veterinary training and the most difficult stage for beginning veterinary students. The proposed AR simulator provides with a tangible prop, of which shape looks like a leg of a real dog. It also has an injection simulator, which receives users input and sends force feedbacks to indicate results of the injection simulation. We developed a Workbench type AR system with an LED display and cameras for visual information processing. Finally, we evaluated its performance through experiments and user studies to check its acceptance level and usability of the proposed system. We compared the proposed system with a VR based system using a monitor. The results showed that the proposed system showed better performances over these systems.

APJava: an aspect-oriented parallel programming model in Java

The paper introduces the APJava programming environment, called APJava. APJava is an aspect-oriented parallel dialect of Java that imports HPJava-like arrays -- in particular the distributed arrays -- as new data structures. The main purpose of APJava is to provide an easy-to-use aspect-oriented parallel programming environment to engineers and scientists unfamiliar with parallel programming. The paper discusses an overview of APJava and pre-translation scheme and basic translation scheme adopted in a translator for the APJava language.

Design and development of a distributed real-time tele-operation model: supporting u-GIS integrated monitor system

In the real world it is very difficult to implement real-time models in uncontrolled distributed environments and to support well-defined interfaces from real-time systems to external systems. Distributed real-time applications such as Integrated Monitor System to establish u-GIS project environments require distributed real-time application integrated with tele-operation technology able to collect and process data (location information, image information and information about equipment in remote places) generated from remotely distributed construction sites in real time and operate equipment related to the sites from a long distance away. The main purpose of this paper is to study how to support real-time applications, to design TMO-based distributed real-time processing techniques for real industrial applications, to implement and develop a TMO-based DRTS Model with less strict real-time constraints in ubiquitous environments.