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

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.-

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.

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)

동시최적화 설계기법을 이용한 항만용 크레인의 흔들림 제어계 설계

김영복(YOUNG-BOK KIM),문덕홍(DUK-HONG MOON),양주호(JOO-HO YANG),채규훈(GYU-HOON CHAE) 한국해양공학회 2005 韓國海洋工學會誌 Vol.19 No.3

The sway motion control problem of a container hanging on the trolley is considered in this paper. In the container crane control problem, the main issue involves suppressing the residual swing motion of the container at the end of acceleration, during deceleration, or for an unexpected disturbance input. For this problem, in general, many trolley motion control strategies are introduced and applied. In this paper, we introduce and synthesize a swing motion control system, in which a small auxiliary mass is installed on the spreader. In this control system, the actuator reacting against the auxiliary mass applies inertial control forces to the container to reduce the swing motion in the desired manner. In many studies, the controllers used to suppress the vibration have been synthesized for the given mathematical model of plants. In many cases, the designers have not been able to utilize the degree of freedom to adjust the structural parameters for the control object. To overcome this problem, so called "Structure/Control Simultaneous Method" is used. From this, in this paper the simultaneous design method is used to achieve optimal system performance. And the experimental result shows that the proposed control strategy is useful, to the case of that the controlled system is exposed to the uncertainties and, robust to disturbances like wind.

거제도 인근도서(지심도, 내도, 윤돌도)의 자원식물상 연구

박선주(Seon-Joo Park),우복주(Bok-ju Woo),박성준(Seong-Jun Park),황규진(Gyu-Jin Hwang),김금숙(Kum-Suk Kim),이종욱(Jeung-Wook Lee) 한국자원식물학회 2005 한국자원식물학회지 Vol.18 No.3

거제도의 인근도서 지심도, 내도, 윤돌도 식물상 조사는 2004년 3월, 6월, 8월 총 3번에 걸쳐 식물상을 조사하였다. 본 조사 결과 관속식물은 지심도 64과 114속 121종 10변종 131분류군, 내도 53과 79속 5변종 81분류군, 윤돌도 14과 15속 15종 1변종 16분류군으로 총 72과 140속 149종 14변종 1품종 164분류군이 동정하였다. 멸종위기식물은 관찰되지 않았으나, 한국특산식물은 거제딸기, 섬쥐똥나무 등 2과 2속 1종 1변종 총 2분류군이 확인되었다. 식물구계학적 특정식물은 가는쇠고사리, 섬쥐똥나무, 나도생강, 털머위, 생달나무, 센달나무, 남오미자, 멀꿀, 팔손이 등을 포함 25과 33속 36종 2변종 38분류군이 관찰되었다. 그 외에 귀화식물은 소리쟁이, 자리공, 토끼풀, 까마중, 선개불알풀, 주홍서나물, 개망초, 별꽃아재비등 6과 10속 10종으로 우리나라 전체 귀화식물종 284종에 대한 도시화지수(U.I) 및 귀화율은 3.52%와 6.1%이다. 조사지역은 장승포와 옥포 등 가까운 거리에 있고 자연경관이 뛰어나 방문객의 수가 갈수록 급증할 것으로 예상되어 귀화식물의 종류와 수는 앞으로 더욱더 늘어날 것으로 전망된다. 또한 낚시터로 많은 사람들의 출입이 빈번한 곳이다. 이에 따른 식생이 파괴될 위험이 크므로 조사지역의 상록활엽수림에 대한 보존대책이 요망된다. The floras of Jisimdo, Naedo and Yundoldo around Koje Island were investigated 3 times from January 2004 to November 2004. The vascular plants recorded were 165 taxa, 1 forms, 15 varieties, 149 species, 140 genera, 72 families, The rare and endangered plants were recorded as 1 taxa (Quercus gilva Blume), Korean endemic plants were recorded as 2 taxa (1 variety, 1 species, 2 genera, 2 families). The naturalized plants were 10 taxa, 10 species, 10 genera, 6 families, 3.52% and 6.1% among the total naturalized plants and Urbanization Index in Korea. Anglers and visiter s number is expected to increase fast because nature of Jisimdo, Naedo and Yundoldo, in which kind and number of naturalized plants are forecasted to be increased more.