공동작업 환경의 일관성 제어를 위한 즉시 변경 통보 방법

오암석 울산과학대학 1996 연구논문집 Vol.22 No.-

소프트웨어 시스템은 여러 작업 공간으로 부터 공동 작업에 의해 개발된다. 이 때 서로 다른 작업 공간의 모듈간에는 다양한 종속적 관련성이 존재하며 각 작업 공간에서 이러한 종속적 관련성이 있는 모듈을 각각 독립적으로 변경할 때 이에 따른 일관성 제어 문제가 해결되어야 한다. 아울러 여러 작업공간간 동일 모듈을 동시에 변경할 때 발생하는 conflict문제도 고려되어야 한다. 이 논문은 클라이언트-서버 환경에서 다양한 관련성을 가지는 여러 모듈들로 구성된 소프트웨어 시스템 개발 환경에서 공동 작업시 작업 공간간의 관련 모듈 변경에 관한 일관성 제어 방법을 제시한다. 이를 위해 다운로드시 발생되는 다양한 동적 관련성을 자동 유도 생성하고 이를 기반으로하여 작업 공간으로 부터 변경이 발생할 때 변경 내용과 동적 관련성에 따라 해당 규칙을 호출,실행하므로서 관련된 작업 공간으로 변경 내용을 즉시 통보하는 방법으로 일관성을 제어한다. The software system is developed by a cooperative work in the several workspaces. At this time, there exist various dependent relationships among modules of the several workspaces. The problem of consistency control should be resolved, when these dependent modules are independently updated from each workspace. The problem of a conflict by multiple updates should be also resolved clearly, if a module is simultaneously updated from several workspaces. This paper presents a method for consistency control on updates of related modules among workspaces, when the software system is cooperatively developed. The development environment of the software system is the client-server environments composed of many modules with various relationships. Thus, in this paper, various dynamic dependencies automatically are derived and generated by the system called the Consistency Manager, when a module is downloaded into a workspace. Accordingly, if an update is occurred from a workspace, the update can be immediately notified to related workspaces through the execution of a rule based on an updated content and the dynamic dependencies.

인트라넷 솔루션의 설계 및 구현

오암석 동명정보대학교 2000 東明情報大學校論文集 Vol.3 No.-

Nowadays, the broadening of users of Internet to general public and the generalization of information sharing through the Web, more importance is given to Internet which may increase the official efficiency in the enterprise and provides the instant service of necessary information through the Web. However, though some cases of Intranet construction in some companies have proven the efficiency of Intranet, most companies are still reluctant to introduction of Intranet because of the cost and security problem. Therefore, when more systematic security system is designed, the data and users of Internet are managed in real time, and the differentiating service for the users is developed easily on the Web, it will be in short time to establish the network of Intranet among enterprise. In this paper, we propose an intranet solution for the small-to-middle sized companies, SIGMA, in which every management process is possible on the Web and the separate information service for each group, and for each person is provided. And, to differentiate our solution from existing ones, we provides the manager interface by which the management on the Web is possible and the constructional plan of Intranet solution for the enterprise in low price.

Personal Health Care Management System Developed under ISO/IEEE 11073 with Bluetooth HDP

Am suk Oh,Doo Heon Song,Gwan Hyung Kim 보안공학연구지원센터 2014 International Journal of Smart Home Vol.8 No.3

Design and Implementation of Standard DICOM Interface Module

Am Suk Oh,Oh Hyun Kwon,Gwan Hyung Kim 보안공학연구지원센터 2014 International Journal of Bio-Science and Bio-Techn Vol.6 No.2

Database Construction for Design of the Components Software by Using an Incremental Update Propagation

Oh, Am-Suk,Kwon, Oh-Hyun Korea Multimedia Society 2003 멀티미디어학회논문지 Vol.6 No.4

Engineering design applications require the support of long transactions in cooperative environments. The problem of the existing copy/update/merge approaches is that the partial effects of a committed transaction may be not part of the merged version. This paper introduces a new cooperative transaction model, which allows updates to be progressively notified or propagated into other transactions accessing the same object. To support incremental update propagation and notification, we use the term dynamic dependency to define the intertransaction dependency relationships among all the objects checked out from the public database. Consistency in multiple copies of the same object is achieved by a two-phase delta-merge protocol. Our model provides a synchronization of cooperative updates performed in several workspaces without using locking mechanisms.

Design of System for Accurate Tracking Services in Environments with Obstacles

Oh, Am-Suk The Korea Institute of Information and Commucation 2021 Journal of information and communication convergen Vol.19 No.3

Since the first commercialization of beacon-based services in 2011, various services have been provided to improve Bluetooth performance, and research has been conducted to accurately recognize user locations using beacons. The various measurement methods of indoor positioning systems (IPS) include methods using receiver signal strength indicator (RSSI) the strength of which varies greatly in accuracy depending on whether there are obstacles such as cement walls or doors. In this paper, we present a method to provide accurate positioning services even in the presence of obstacles in indoor spaces. To this end, we connect the HM-10 module supporting the beacon with Arduino Uno, to place beacons in three directions in real-world indoor space, and derive an optimal trilateration equation. Based on the derivation, we select the optimal expression for calculating the distance between the beacon and the moving station and use it to verify the coordinate determination for the moving station.

Research on Efficient Through Convergence of IoT Interaction Device and Opened Platform

Am-Suk Oh 보안공학연구지원센터 2016 International Journal of Multimedia and Ubiquitous Vol.11 No.5

In this paper, we propose a design configuration of a unified remote controller under IoT environment using IFTTT services. This unified controller approach is necessary to avoid the limited functionalities of smart phone App approaches without unified control. The proposed system design can be implemented with one-chip IoT interaction module that can be used in wearable devices.

Design and Implementation of Platform for Monitoring of Notification System in Firebase Message

Oh, Am-Suk The Korea Institute of Information and Commucation 2021 Journal of information and communication convergen Vol.19 No.1

In this paper, to prevent accidents of school vehicles used by students, which have emerged as a continuous social problem, a boarding and leaving notification system using Bluetooth beacons is proposed. The platform structure uses Bluetooth, a smartphone, and an application, and provides real-time message reception between parents and teachers. It is not simply a system with Bluetooth capability alone, but also an IcT technology that is closely related to real life using two-way communication. The purpose is to provide user-friendly ICT technology as an integrated system for more practical effects. Two-way exchange of information between parents and teachers using cloud servers is made possible. By using this Bluetooth beacon notification system, safety accidents in student vehicles are reduced, which brings confidence from traffic accidents to schoolchildren of parents and teachers. Therefore, it is expected that parents and teachers are expected to improve their mental stability and quality of life from traffic accidents.

A Study on Intelligent Edge Computing Network Technology for Road Danger Context Aware and Notification

Oh, Am-Suk The Korea Institute of Information and Commucation 2020 Journal of information and communication convergen Vol.18 No.3

The general Wi-Fi network connection structure is that a number of IoT (Internet of Things) sensor nodes are directly connected to one AP (Access Point) node. In this structure, the range of the network that can be established within the specified specifications such as the range of signal strength (RSSI) to which the AP node can connect and the maximum connection capacity is limited. To overcome these limitations, multiple middleware bridge technologies for dynamic scalability and load balancing were studied. However, these network expansion technologies have difficulties in terms of the rules and conditions of AP nodes installed during the initial network deployment phase In this paper, an intelligent edge computing IoT device is developed for constructing an intelligent autonomous cluster edge computing network and applying it to real-time road danger context aware and notification system through an intelligent risk situation recognition algorithm.

A Study on Design of Health Device for U-Health System

Am-Suk Oh 보안공학연구지원센터 2015 International Journal of Bio-Science and Bio-Techn Vol.7 No.2

U-health system supports health care services of prevention, diagnosis, medical treatment, post health management and currently various medical service systems such as remote diagnosis, emergency medical treatment, private living body monitoring are developed and serviced. There are network compatibility problems among the u-Health devices as their different protocols and software, which are manufactured depending on the characteristics of companies. The utilization of medical information thru hospitals and medical agencies is needed in this society. Thus, in this thesis, we study the design of health devices to analyze and adjust the U-health system.