프로그램 군 개발 방법에 관한 연구

朱福圭 홍익대학교 산업기술연구소 2002 産業技術 Vol.12 No.-

In a software product line approach, developers first develop common software architecture and components by analyzing the characteristics of all software members, and then produce each application by integrating components. The approach is considered very effective means for developing and maintaining in parallel a software family of many members. Main disadvantages of this approach is that it requires a big up-front investment in preparing product line and it takes time to deliver the first version. In this paper, we present an incremental approach to the development of software family, which requires little additional cost for initial versions and allows an organization to move smoothly to full-scale product line.

첨단 연구 교육망에 관한 조사 연구

朱福奎 弘益大學校 産業技術硏究所 2005 産業技術 Vol.15 No.-

In the last decades, inter-networking technologies advanced more rapidly than any other field. Today, the Internet became an indispensible tool of everyday's life of human beings and then became a basic infrastructure to the nations and to the world. Since late 1990s, developed countries recognized the advanced network as one the most important tool for the future of science and technology development and for education, and has made every effort to develop and improve national research and education networks. This paper is a survey on the research and the deployment of advanced research and education networks. The result will provide network researchers with the current status of advanced network deployment around the world and future trends of internet technologies.

소프트웨어 컴포넌트 재사용에 관한 연구

朱福奎 홍익대학교 산업기술연구소 2001 産業技術 Vol.11 No.-

Software reuse and component-based development methods are regarded as one of the most important tools for developers to cope with ever-increasing needs for reliable software and software complexity. This paper presents how to generate integrated software from resuable components, and how to develop the functions of composed software, by the analysis of domain relations of components, This study is based on the dataflow systems architecture and process components, and the domain analysis technique presented here is an application of domain testing techniques.

A User’s Experience in Optimizing Smartphone Performance Using Overclocking and Memory Cleaning Techniques

Bok-Gyu Joo,Sung-Min Kim 보안공학연구지원센터 2012 International Journal of Smart Home Vol.6 No.4

Do Severity Score and Skin Temperature Asymmetry Correlate with the Subjective Pain Score in the Patients with Complex Regional Pain Syndrome?

( Seung Gyu Jeon ),( Eun Joo Choi ),( Pyung Bok Lee ),( Young Jae Lee ),( Min Soo Kim ),( Joung Hwa Seo ),( Francis Sahngun Nahm ) 대한통증학회 2014 The Korean Journal of Pain Vol.27 No.4

Background:The diagnostic criteria of complex regional pain syndrome (CRPS) have mainly focused on dichotomous (yes/no) categorization, which makes it difficult to compare the inter-patient`s condition and to evaluate the intra-patient``s subtle severity over the course of time. To overcome this limitation, many efforts have been made to create laboratory methods or scoring systems to reflect the severity of CRPS; measurement of the skin temperature asymmetry is one of the former, and the CRPS severity score (CSS) is one of the latter. However, there has been no study on the correlations among the CSS, temperature asymmetry and subjective pain score. The purpose of this study was to evaluate whether there is any correlation between the CSS, skin temperature asymmetry and subjective pain score.Methods:Patients affected with CRPS in a unilateral limb were included in this study. After making a diagnosis of CRPS according to the Budapest criteria, the CSS and skin temperature difference between the affected and unaffected limb (ΔT) was measured in each patient. Finally, we conducted a correlation analysis among the CSS, ΔT and visual analogue scale (VAS) score of the patients.Results:A total of 42 patients were included in this study. There was no significant correlation between the ΔT and VAS score (Spearman`s rho = 0.066, P = 0.677). Also, the CSS and VAS score showed no significant correlation (Spearman`s rho = 0.163, P = 0.303).Conclusions:The ΔT and CSS do not seem to reflect the degree of subjective pain in CRPS patients. (Korean J Pain 2014; 27: 339-344)

ICT 융합기술을 활용한 암반특성 예측기능을 가진 유압 브레이커 개발에 관한 연구

윤복중(Bok Joong Yoon),이길수(Kil Soo Lee),임훈(Hoon Lim),이호연(Ho Yeon Lee),이명규(Myung Gyu Lee),권혁진(Hyuk Jin Kwon),김갑태(Kab Tae Kim),주진무(Jin Moo Joo) 대한기계학회 2017 大韓機械學會論文集A Vol.41 No.7

고유가, 환경규제 등의 국제무역환경 변화에 따라 수출주력상품인 유압 브레이커의 고부가가치화를 위하여 지능형 전자제어유압시스템 분야인 ICT 융합기술을 활용하여 암반특성을 예측하고 최적모드(다단형)로 구동하는 지능형 파쇄기술 및 에너지 효율을 극대화할 수 있는 유압 브레이커 개발에 관한 연구를 수행하였다. 본 연구에서는 암반의 강도에 따라 최적의 타격력을 제공하기 위해 근접센서를 이용해 암반 타격 시 피스톤의 하강 깊이를 측정하고 이를 통해 암반의 특성을 판별하여 타격력을 결정하는 피스톤 스트로크의 길이를 솔레노이드 밸브를 이용해 제어하였다. 다단 타격시스템을 위해 컨트롤러와 디스플레이/조작장치를 개발하였고, 무선통신을 이용하여 상호 정보교환이 가능하도록 하였다. 최종적으로 암반 강도에 따라 3단으로 타격할 수 있는 제어시스템을 개발하였고, 실차실험을 통해 이를 검증하였다. We have carried out the development for hydraulic breaker which can be operated by optimal mode with ICT convergence technology. This developed system can predict the rock properties. Moreover, this system can maximize the energy efficient with intelligent control of hydraulic system. In order to provide the optimal impact force, this system can measure the descending depth of piston with the proximity sensor and discriminate the rock properties with the measuring data and control the piston stroke using solenoid valve eventually. In addition, we have developed the controller, display module and operating device for cascade (multi-level impact) system and applied the module which can communicate each system by wireless communications. In conclusion, the control system which can control the multi-level impact in accordance with strength of rocks has been developed and approved by several field tests.

2D ECG Compression Method Using Sorting and Mean Normalization

이규봉(Gyu-Bong Lee),주영복(Young-Bok Joo),한찬호(Chan-Ho Han),허경무(Kyung-Moo Huh),박길흠(Kil-Houm Park) 대한전기학회 2009 정보 및 제어 심포지엄 논문집 Vol.2009 No.5

In this paper, we propose an effective compression method for electrocardiogram (ECG) signals. 1-D ECG signals are reconstructed to 2-D ECG data by period and complexity sorting schemes with image compression techniques to increase inter and intra-beat correlation. The proposed method added block division and mean-period normalization techniques on top of conventional 2-D data ECG compression methods. JPEG 2000 is chosen for compression of 2-D ECG data. Standard MIT-Bill arrhythmia database is used for evaluation and experiment. The results show that the proposed method outperforms compared to the most recent literature especially in case of high compression rate.

H∞-Gain Scheduling Approach to the Rudder-Roll Stabilization System Design with Varying Ship Speed

Young-Bok Kim,Jung-Hoan Byun,Gyu-Hyn Chea,Seok-Kwon Jeong,Joo-Ho Yang 한국마린엔지니어링학회 2001 International Conference on Marine Engineering Vol.- No.-

Do Severity Score and Skin Temperature Asymmetry Correlate with the Subjective Pain Score in the Patients with Complex Regional Pain Syndrome?

Jeon, Seung Gyu,Choi, Eun Joo,Lee, Pyung Bok,Lee, Young Jae,Kim, Min Soo,Seo, Joung Hwa,Nahm, Francis Sahngun The Korean Pain Society 2014 The Korean Journal of Pain Vol.27 No.4

Background: The diagnostic criteria of complex regional pain syndrome (CRPS) have mainly focused on dichotomous (yes/no) categorization, which makes it difficult to compare the inter-patient's condition and to evaluate the intra-patient's subtle severity over the course of time. To overcome this limitation, many efforts have been made to create laboratory methods or scoring systems to reflect the severity of CRPS; measurement of the skin temperature asymmetry is one of the former, and the CRPS severity score (CSS) is one of the latter. However, there has been no study on the correlations among the CSS, temperature asymmetry and subjective pain score. The purpose of this study was to evaluate whether there is any correlation between the CSS, skin temperature asymmetry and subjective pain score. Methods: Patients affected with CRPS in a unilateral limb were included in this study. After making a diagnosis of CRPS according to the Budapest criteria, the CSS and skin temperature difference between the affected and unaffected limb (${\Delta}T$) was measured in each patient. Finally, we conducted a correlation analysis among the CSS, ${\Delta}T$ and visual analogue scale (VAS) score of the patients. Results: A total of 42 patients were included in this study. There was no significant correlation between the ${\Delta}T$ and VAS score (Spearman's rho = 0.066, P = 0.677). Also, the CSS and VAS score showed no significant correlation (Spearman's rho = 0.163, P = 0.303). Conclusions: The ${\Delta}T$ and CSS do not seem to reflect the degree of subjective pain in CRPS patients.

소프트웨어 제품 군을 개발하기 위한 점진적 방법

주복규,김영철,Joo, Bok-Gyu,Kim, Young-Chul 한국정보처리학회 2003 정보처리학회논문지D Vol.10 No.4

소프트웨어 제품 군 개발 방법은 모든 멤버 시스템에 대한 공통점과 차이점들을 분석하여 표준 소프트웨어 구조와 컴포넌트들을 개발하여 생산라인을 갖추고, 제품 개발 조직에서 여러 버전을 병행하여 생산하고 관리하는 방법이다. 기존의 제품 군 방법은 성공하였을 경우에 경제적 이익은 크나, 초기 투자비가 매우 크다는 것과 첫 제품이 늦게 나온다는 것이 문제점으로 지적되고 있다. 이 논문에서 우리는 초기 비용을 적게 들이면서 궁극적으로 제품군 개발 방법을 조직에 적용할 수 있는 점진적 방법을 제안한다. 이 방법은 초기 버전을 개발할 때부터 변화 가능성에 관한 정보를 기록하여 차기 버전의 개발에 활용한다. 이 변화 분석의 결과는 본격 제품 군 개발로의 전환을 쉽게 해 준다. 변화 가능성을 기록하는 변경 사양서의 생성과 개선 기법을 중심으로 우리의 방법을 설명하고, YBS 시스템 개발을 예로 그 적용을 보인다. 우리가 제안한 방법은 초기에 많은 투자를 할 수 없거나 초기버전을 빨리 시장에 내 놓아야 하는 경우에 적용할 수 있는 저 위험 제품 군 개발 방법이다. In a software product line approach, developers first develop common software architecture and components by analyzing the characteristics of all software members, and then produce each application by integrating components. The approach is considered very effective means for developing and maintaining in parallel a software product family. Main disadvantage of this approach is that it requires a big up-front investment in preparing product line. Therefore, it takes time to deliver the first version. In this paper, we present an incremental method to develop software families, which requires small additional cost for initial versions and allows an organization to move smoothly to full-scale product line. We present our method by explaining how to record and upgrade the results of variations analysis, and show the application of our method by developing a family of YBS. Our method is a low-risk approach that can be effectively applied to an organization that starts developing software systems but has to deliver the first versions quickly to the market.