이족로봇의 경사면 균형 유지와 보행에 관한 연구

오성남,윤동우,손영익,김갑일,임승철,강환일 명지대학교 산업기술연구소 2007 産業技術硏究所論文集 Vol.26 No.-

This paper aims to provide a way to improve dynamic stability of biped robots against undesirable disturbances and in a slope. By using an angular velocity sensor and an acceleration sensor on its waist, we can make a medium-sized biped robot walk stably in a slope against impulsive disturbances. In addition, it is possible for the robot to walk stably in an unknown slope. The measured signals from the sensor are used for compensating the reference angles of ankle, knee, and pelvis joints. Some experiments show that the stability of the robot is much enhanced by using cheap sensors and a simple algorithm. This work helps biped robots walk more stably in real environments.

분산전원 계통 연계를 위한 모니터링 시스템의 개발

오성남,손영익 明知大學校 産業技術硏究所 2005 産業技術硏究所論文集 Vol.24 No.-

Owing to the environmental problems as well as increasing energy prices and power plant construction costs, many researches have been made for the safe operation of distributed generations. In order to be more popularly used in parallel with the distribution network, the distributed generation and its correlation with the power system should be exactly monitored at any time. This paper presents a monitoring system which displays the important states of the distributed generation in operation and stores various measurements of the system. The proposed system constructs a data-base for developing algorithms against any faults of the interconnected system, and monitors efficiently at any place with the communication network function.

마첨가가 식빵의 품질특성에 미치는 영향

오성천,남해영,조정순 명지대학교 자연과학연구소 2000 자연과학논문집 Vol.19 No.-

마가루를 첨가한 식빵을 만들기 위해 물의 양과 마 가루의 양을 달리해서 제조하여 식빵의 수분함량과 Texture특성을 측정하고 또한 마 가루의 아미노산 함량과 식이 섬유소 함량 및 일반적인 성분을 분석하였다. Baker's Percentage사용법에 의해 마가루 첨가함량에 따른 적절한 물의 함량을 구하여 밀가루 100% 기준에 물의 양을 62%, 65%로 차이를 주어 제조하여 빵의 품질특성을 측정한 결과 마 가루 5% 첨가시에는 물의 양 62%가 적당하고, 10%, 15% 마첨가시에는 물의 양이 65%가 적당하였다. Texture특성에서 경도는 65%물을 첨가한 대조군이 가장 낮은 값을 보였으며 마가루의 첨가량이 증가할수록 경도와 검성, 씹힘성은 대조군에 비해 2∼ 3배의 높은 값을 보였다. To make bread added with Dioscorea Japonica Flour, we made bread with different water and Dioscorea Japonica Flour content, and estimated water contained quantity in bread and texture property. And we also analysis content of amino acids and dietary fiber and general composition. To get adequate water content according to adding Dioscorea Japaponica Flour, we made bread with 62% and 65% water content based on 100% wheat flour content of Baker's percentage method. When 5% Dioscorea Japonica Flour was added, 62% water content was appropriate and when 10% or 15% Dioscorea Japonica Flour was added, 65% was better, From a texture characteristic point of view, 65% water control group had the lowest hardness. And according to adding Dioscorea Japonica Flour, springness, gumminess and chewiness increased to 2 or 3 times of 62% water control group.

지식 언톨러지 개념을 이용한 전문 문서의 지식미디어 시스템에 관한 연구

오창윤,조정래,나영남,배상현 조선대학교 통계연구소 2000 統計硏究所論文誌 Vol.2 No.1

The knowledge of the specialized fields has been changed rapidly in the both side of quantity and quality. A hyper media as a knowledge based system is so fixed in the linked media in mutual that we could not tell it information provision with the view of user. In this paper, we propose the way of offering intellectual and flexible information which is same with demand in the side of user, selecting, searching and composing the HyperText at the point of user's view through the design of knowledge media system, three concepts is used in order to challenge the knowledge media system : special document, agent system and ontology. The special document is a knowledge using special fields. The agent system is a homogeneous controller that operates on an application to ensure that its activities are coordinated with those of the others within the community, providing a uniform control mechanism. The last 3th concept, ontology is a language for exchanging knowledge, which is a message exchanged among agents to ensure the proper interaction among them. The combination of these three concepts is used designed the prototype of knowledge media system.

상악골 전벽골 겸손에 대한 재건술에 있어서 동결건조 콜라겐 매식과 소강판고정술의 임상적 유용성

오승환,장관식,조병호,민승기,이동근,김수남 대한악안면성형재건외과학회 2000 Maxillofacial Plastic Reconstructive Surgery Vol.22 No.6

Maxilla is located in midfacial area and has intimate relationship with adjacent anatomical structure such as nasal cavity, orbit, oral cavity, and zygoma. Skeletal defects of maxillary antral wall may be developed by various postoperative causes for comminuted maxillary fractures, tumors of head and neck area or cystic lesions of maxillary sinuses. If these bony defects are left untreated state, this results in several postoperative complications such as soft tissue impingement into bony defects or dysfunction of sinus mucosa. Hence, these defects should be pertinently treated as possible. The main purpose of such surgery is to preservation of normal physiologic function of maxillary sinus. In the past, a variety of materials have been used to reconstruct defects of the maxillary antral wall. Alloplastic materials are popular today because of availability without an additional operation and their ease of use. With favorable results and review of related literatures, we report the availability of lyophilized collagen implantation and microplate fixation as the reconstructive surgical methods on the defects of maxillary anterior wall resulted from various reasons.

GPS 를 활용한 무인 비행체의 자율비행에 관한 연구

오성남,이검수,김갑일,강환일 明知大學校 産業技術硏究所 2009 産業技術硏究所論文集 Vol.28 No.-

In this paper, we describes a study on autonomic flight of UAV(Unmanned Aerial Vehicle) that is equipped with GPS(Global Positioning System). This research have used a quarter vehicle that has the form of rotary-wing aircraft. The quarter vehicle is unstable because it flies by lift forces from 4 propellers and turning repelling power. UAV flight control system applied inertia sensors to keep stable position and balance of the vehicle. GPS supplies correct position data that decides position, speed and direction of aircraft. With the help of GPS, the autonomic flight can be successful. Also, small size magneto-resistive sensors(MRS) improves the direction information of GPS. In this paper we propose a GPS application method and autonomic flight algorithm for coordinate calculation.

기초 건강검사에 의한 비만여고생의 신체조성ㆍ혈액성분 및 면역기능 분석

남태호,차성웅,오덕자,한성섭 釜山大學校 附設 體育科學硏究所 1997 體育科學硏究所 論文集 Vol.13 No.-

This study intended, through some basic healths test, to find out the body composition, the blood components, and the immune function of the obese high-school girls. With 2 groups of 16 subjects, the eight obese group and the other eight non-obese group, the results are following: 1. In the body composition analysis, its quantity comparison indicates that the obese group shows significance higher than the non-obese group in Body fat and Weight (p<.001). The rate of comparison per weight of body composition tells that the former shows significance lower than the latter in every item(% Water, % Protein, % Muscle, % LBM) except the item % Mineral. (p<.001) 2. In the biochemical serum test, there is much higher significance of the obese group than the non-obese group in TC and TG (p<01), but there is not any significance difference in HDL-C. 3. In the blood test, the significance difference of the obese group is much higher in RBC, Hct, PLT(p<.01) and Hb(p<.05), but not in WBC. 4. In the leucocyte test(WBC diff) to find out their immune function, the obese group shows lower significance difference than the non-obese group only in Monocyte and Eosinophil.(p<.05), but not in Neutrophil, Lympocyte and Bosophil. From the above results, the obese high-school girls seem to have a good nutrient status and show no abnormality in their body composition and blood elements. But the result of WBC diff cannot show clearly the difference between two groups, which tells the need of the further investigation on T-cells and B-cells in lymphocyte.

재구성 가능한 구조를 위한 HW/SW 분할 및 스케쥴링 알고리즘

오세준,김남섭,김진상,조원경 경희-다반 ASIC 설계교육센터 2002 경희-다반 ASIC센터 논문집 Vol.3 No.-

동적 재구성 가능한 하드웨어 구조를 포함하는 시스템은 실시간으로 알고리즘을 처리할 수 있도록 하드웨어 자원을 효과적으로 이용할 수 있어야 한다. 이런 시스템의 수행 성능은 기본적으로 HW/SW 분할 문제에 의존한다. 이 논문은 동적 재구성 가능한 하드웨어를 위한 새로운 HW/SW 분할 알고리즘을 제안했다. 알고리즘은 초기해 얻기 후 그 해를 다시 최적화하는 단계적인 접근방법이다. 알고리즘은 분할 과정에서 FPGA를 재구성하는 과정을 고려했고 이를 최적화하기 위해서 부분적인 재구성(partial reconfiguration) 방법과 prefetching 재구성 방법을 사용했다. 이 휴리스틱(heuristic) 알고리즘을 통하여 JPEG 부호화기가 다른 접근 방법에 비하여 최적의 수행 성능을 얻음을 보였다.

대전광역시 동구 일대의 나비류

남상호,조영호,심명호,장석원,오홍식,박영준,이선영 대전대학교 기초과학연구소 2001 自然科學 Vol.12 No.1

1986~2000년까지 대전광역시 동구 일대에서 나비류를 조사한 결과, 총 5科 70屬 103種이 확인되었다. 種 數가 가장 풍부한 科는 네발나비科로 54種이 조사되었다. 우점종은 흰나비 科의 배추흰나비로 16.1%의 우점도를 기록하였다. 각 월별 우점종을 분석한 결과 4·5·6월에는 배추흰나비, 7·9·10월에는 네발나비, 8월에는 호랑나비가 우점종으로 나타났다. 생물지리학적 위치의 분포 분석 결과, 조사된 나비류 103種 중 72種이 구북구계의 種으로 나타났다. 환경부에서 지정 고시한 멸종 위기 및 보호종으로 지정된 6종의 나비류 중 쌍꼬리부선나비, 왕은점표범나비 등 2종류가 조사되었다. 또한 국내에서는 발생하고 있지 않은 미접(迷?)으로 먹나비가 채집되었다. Butterfly fauna from Daejeon Metropolitan City was investigated from 1986 to 2000. As the result, a total of 103 species of 70 genera under 5 families were identified. The number of species was the most abundantly revealed in the family Nymphalidae(54 species). The most dominant species in the present investigation was Pieris rupae (Linnaeus) (16.1%, Piendae). As the rusults of biogeographical distribution, 72 species of 103 species were Palaerctic region. Among 6 species listed in the Red Book by Ministry of Environment(l997), 2 species are found in this collection. Melanitis leda (Linnaeus) as accidental butterfly was collected.

섬유보강에 의한 고강도콘크리트의 내화성능 개선

오상균,김세훈,남지현 동의대학교 산업기술개발연구소 2005 産業技術硏究誌 Vol.19 No.-

Nowadays, it is a requirement to use high strength concrete for skyscrapers. Therefore safety research for high strength concrete is necessary. A fire outbreak in a reinforcement concrete structure looses the organism by the different contraction and expansion of hardened cement pastes and aggregate, and causes crack by thermal stress, leading to the deterioration of the durability. In this study, normal and high strength mortar were exposed to a high temperature environment. And than fundamental data for the character change of concrete heated highly were resented by measuring compressive strength of concrete with PP fiber and vinylon fiber, before and after heating. As the result, it is proven that adding PP fiber and vinylon fiber in high strength concrete for prevents deterioration of durability by fire.