강관으로 보강된 중공 RC 기둥의 중공비에 따른 거동

최준호,윤기용,한택희,강영종,Choi. Jun-Ho,Yoon. Ki-Yong,Han. Taek-Hee,Kang. Young-Jong 한국방재학회 2007 한국방재학회논문집 Vol.7 No.3

중공 RC 기둥은 중실 RC 기둥에 비해 자중의 감소 및 재료 절감에 대한 장점을 가진다. 그러나 중공 RC 기둥은 안쪽면의 취성파괴로 인하여 낮은 연성 거동을 할 가능성이 있다. 이러한 문제점을 해결하기 위해 중공 부재 내의 콘크리트 3축 구속 상태로 존재하게 하는 강관으로 보강된 중공 RC 기둥이 개발되었으며, 본 연구에서는 강관으로 보강된 중공 RC 기둥의 중공비를 <TEX>$0.50{\sim}0.85$</TEX>까지 변화 시켜 중공비에 따른 작용하중에 대한 안전율, 연성도, 재료비, 교각 총 중량에 대한 거동 특성을 파악하였다. The hollow RC(Reinforced concrete) column has the effect of reducing weight and materials compared to solid RC column. However, the hollow RC column shows a low ductile behavior due to brittle failure of inside concrete. To overcome this problem, the internally confined hollow reinforced concrete column has been developed. In this study, the behavior of internally confined hollow RC columns were evaluated with safety ratio, ductility, total material cost, the total weight of the pier, etc. The hollow ratio is varied from 0.50 to 0.85.

A Broadband Active Composite Dipole Antenna for Direction-finding Applications at V/UHF-band

최준호,Choi, Jun-Ho The Korea Institute of Military Science and Techno 2006 한국군사과학기술학회지 Vol.9 No.1

A compact broadband active composite dipole antenna for direction finding system at the V/UHF-band is presented. It uses the composite structure which improves the antenna gain and the active circuit for broadband operation. This type of antenna has a high gain more than that of one dipole antenna within limited length(1m). The basic design and performance of both antenna structure and integrated active circuit are presented.

건축물의 유형별 신재생에너지 기술을 적용하기 위한 평가방안과 기초자료 구축에 관한 연구

최준호,김예상,Choi, Jun-Ho,Kim, Yea-Sang 한국건설관리학회 2013 한국건설관리학회 논문집 Vol.14 No.2

온실가스로 인한 환경의 파괴와 화석에너지의 고갈로 인한 대체에너지의 필요성 인식으로 신재생에너지원의 활용에 대한 관심은 전 세계적으로 그 중요성이 증대되고 있다. 국내에서도 이미 2011년부터 공공기관 건축물에 대한 신재생에너지 적용을 시작으로, 국토해양부의'녹색도시, 건축물 활성화 방안'을 통해 2025년까지 모든 신규건축물에 제로에너지 건축물의 의무화를 추진하는 정책을 펼치며 건축물에 대한 신재생에너지의 활용이 이제 선택이 아닌 필수가 되어가고 있음을 나타났다. 이에 본 연구에서는 건축물에 활용 가능한 신재생에너지원을 대상으로, 기술선정을 위한 연구 프로세스를 마련하고 이에 대한 다각적인 평가를 실시하였다. 이를 통해 건축물을 대상으로 신재생에너지 기술선정을 위한 방안을 제안하고, 현재 대상기술들의 수준과 특성을 검증하여 성공적 기술적용을 위한 기반구축 자료로서의 역할을 기대한다. Recently, there is the growing concern about the environment and energy. Such concern has been seen in the field of building. In this study, Analysis was performed about a variety of techniques that can be applied to the building sector. By conducting a survey of expert, Characteristics of each technology and each Building types application are certificated. As a result, The application of renewable energy in buildings and determine the characteristics of each technology are presented. Based on these results, the selection method of the efficient technologies that take advantage of the building of the project from the planning stage are expected.

Mac OS X 운영체제상의 사용자 흔적정보 수집방안 연구

최준호,이상진,Choi, Joon-Ho,Lee, Sang-Jin 한국정보처리학회 2010 정보처리학회논문지 C : 정보통신,정보보안 Vol.17 No.4

Mac OS X는 애플에서 제작한 컴퓨터 운영체제이다. 1984년도부터 MAC OS의 마지막 버전인 9를 계승하여 지금의 Mac OS X 10.6(Snow Leopard)에 이르고 있다. 전 세계 운영체제 점유율에서 애플의 Mac OS X운영체제는 10% 정도를 차지하고 있으나, 현재 디지털 포렌식 조사에 활용되고 있는 포렌식 도구들은 Mac OS X에 대한 포렌식 분석을 제대로 수행할 수 없다. Mac OS X에 대한 포렌식 조사를 하는데 있어서, 운영체제 상에서 사용자의 행위와 흔적과 관련된 정보는 중요한 디지털 증거가 될 수 있다. 본 논문에서는 Mac OS X 운영체제 상의 사용자 흔적 정보 수집에 관한 방안을 제시한다. Mac OS X is the Computer Operating System that develop in Apple Inc. Mac OS X is the successor to Mac OS 9 Version which had been Apple's primary operating system since 1984. Recently, Mac OS X 10.6 (Snow Leopard) has been manufactured and is distributed to user. Apple's Mac OS X Operating System is occupying about 10% in the world Operating System market share. But, Forensic tools that is utilized on digital forensic investigation can not forensic analysis about Mac OS X properly. To do forensic investigation about Mac OS X, information connected with user's action and trace can become important digital evidence in Operating System. This paper presents way about user trace data acquisition methodology in Mac OS X.

노인복지회관의 운영형태별 공간특성과 시설운영 비교분석 - 영남권 광역시 중심으로 -

최준호,서지은,이정호,Choi Jun-Ho,Seo Ji-Eun,Lee Jeong-Ho 한국주거학회 2005 한국주거학회 논문집 Vol.16 No.6

The purpose of this study was to analyze characteristics such as spatial composition, areas, location of functional unit space and comparing the type and the number of operating programs by type of managements of multipurpose senior center in Youngnam metro area. first, the consignation management facilities had functional unit space of 152 things and the direct management facilities had 115 things. When comparing average areas composition ratio, direct management is public welfare, social education, public part, medical and rehabilitation order and consignation management is public part, social education, public welfare and rest part order. Second, medical part must be located around the first floor or the elevator, because many people can frequently use this area at the same time. Third, as a result of analysis of management programs indicated that the total number of programs is as a whole 74 things a range of $min12\~max20$ in the each direct management facilities and 111 things a range of $min20\~max24$ in the each in the each consignation management facilities. This fact shows that consignation management provided many people with more various programs than direct management. Finally, the number of staff in the direct management is less than consignation management. When comparing programs per staff and space, the direct and consignation management each appeared (2.74, 0.64) and (1.35, 0.73). This fact implied that the consignation management was more specialized than direct management in the service and function.

국산 소나무껍질추출물(파인엑솔^®)을 함유한 제제의 피부흡수 평가

최준호,최민구,한완택,한선정,정석재,심창구,김대덕,Choi, Joon-Ho,Choi, Min-Koo,Han, Ohan-Taek,Han, Sung-Jeong,Chung, Suk-Jae,Shim, Chang-Koo,Kim, Dae-Duk 한국약제학회 2007 Journal of Pharmaceutical Investigation Vol.37 No.6

Pine bark extract is well-known as a very powerful antioxidant, anti-inflammatory, and antibiotic material. French maritime pine bark extract ($Pycnogenol^{(R)}$) of Horphag Research has monopolized the world market over 30 years. Korean red pine bark extract ($Pinexol^{(R)}$) was first manufactured by the patent technology of NutraPharm in Korea in 2006. Feasibility of topical gel and patch formulations of Pinexol was systematically investigated by evaluating the skin absorption of catechin as a reference compound. In vitro hairless mouse skin absorption of catechin from gel formulation was higher than that from patches. However, significant amount of catechin was also deposited inside the skin from patch formulations, which were dependent on the types of pressure sensitive adhesives. Thus, it seems to be feasible to control the topical delivery of Pinexol by using both gel and patch formulations, and be necessary to conduct further systematic investigation.

전자무역에서 온라인 ADR의 유형과 활용방안에 관한 연구

최준호,Choi, Jun-Ho 한국정보기술전략혁신학회 2005 情報學硏究 Vol.8 No.1

Electronic Trade of increasing is the use of the Internet makes it possible for business to expand their markets and render services. However, it also brought up many problems caused by various issues. The problems encompass consumer protection and dispute settlement between the disputed parties. Online ADR have some advantage that are convenience, low-cost, legitimate to online users and avoids jurisdiction issues and some disadvantages that are loss of the human factor, lack of accessibility, lack of confidentiality and security and difficulty of enforcing arbitral agreements. This purpose of this paper is to reviews the types of Online ADR, as the dispute settlement way in Electronic Trade. This study points out the task that korea has to promote the Online ADR for more effective and efficient dispute settlements.

구조물 변위 추정을 위한 알고리즘 기법 연구

최준호,김승준,김대혁,이기세,강영종 한국구조물진단유지관리학회 2011 한국구조물진단학회 학술발표회논문집 Vol.2011 No.9

In resent years, there are many actions for maintenance of structures because of social demand and economical reasons. In maintenance structure, especially long-span bridge, many researches are focus on estimate damage of structure and update structure conditions by using acceleration measurement data. But displacement measurement of structure the most effective way to estimate structure condition. However, there is restriction to install displacement measurement sensor in many locations. In this study, estimate entire structure displacement by using some point of measurement displacement data.

컬러 분포와 WordNet상의 유사도 측정을 이용한 의미적 이미지 검색

최준호,조미영,김판구,Choi, Jun-Ho,Cho, Mi-Young,Kim, Pan-Koo 한국정보처리학회 2004 정보처리학회논문지B Vol.11 No.4

의미기반 이미지 검색에서의 의미적 내용 인식은 주석 위주의 텍스트 정보를 이용하는 것이 일반적이다. 이러한 텍스트 정보 기반 이미지 검색은 전통적인 검색 방법인 키워드 검색 기술을 그대로 사하여 쉽게 구현할 수 있으나, 텍스트의 개념적 매칭이 아닌 스트링 매칭이므로 주석 처리된 단어와 정확한 매칭이 없다면 검색할 수 없는 단점이 있었다. 이에 본 논문에서는 Ontology의 일종인 WordNet을 이용하여 깊이, 정보량, 링크 타입, 밀도 등을 고려한 단어간 의미 유사도를 측정하여 패턴 매칭의 문제점을 해결하고자 한다. 또한, 이미지의 컬러 분포 유사도를 측정하여 저차원 특징과 결합한 의미적 이미지 검색이 가능하도록 설계하였다. 제안된 검색 방안에 대해 'Microsoft Design Gallery Live'의 주석을 포함한 이미지를 대상으로 실험한 결과, 기존 의미기반 검색 시스템보다 향상된 결과를 확인하였다. Semantic interpretation of image is incomplete without some mechanism for understanding semantic content that is not directly visible. For this reason, human assisted content-annotation through natural language is an attachment of textual description to image. However, keyword-based retrieval is in the level of syntactic pattern matching. In other words, dissimilarity computation among terms is usually done by using string matching not concept matching. In this paper, we propose a method for computerized semantic similarity calculation In WordNet space. We consider the edge, depth, link type and density as well as existence of common ancestors. Also, we have introduced method that applied similarity measurement on semantic image retrieval. To combine wi#h the low level features, we use the spatial color distribution model. When tested on a image set of Microsoft's 'Design Gallery Line', proposed method outperforms other approach.

고위험 증식당뇨망막병증에서 범망막광응고술과 유리체강내 베바시주맙 병합치료의 장기간 효과

최준호,이성진,최경식,Jun Ho Choi,Sung Jin Lee,Kyung Seek Choi 대한안과학회 2010 대한안과학회지 Vol.51 No.6

Purpose: To evaluate long-term effects and usefulness of combined intravitreal injection of bevacizumab and panretinal photocoagulation (PRP) in patients with high-risk proliferative diabetic retinopathy. Methods: The authors retrospectively reviewed the records of 40 patients (40 eyes) with high-risk proliferative diabetic retinopathy who had been treated with PRP alone (laser treatment group, n=20) or intravitreal bevacizumab before PRP (combined treatment group, n=20). Changes in best corrected visual acuity (BCVA), central macular thickness (CMT) and the total area of leakage from active new vessels (NVs) were compared between the groups at one, three, and six months and at one year post-treatment. Results: In the combined treatment group, CMT decreased significantly at one month (p=0.021), and the areas of active NVs decreased significantly at one month (p=0.001) and three months (p=0.014) compared to those of the laser treatment group. However, there were no differences between the two groups after three months. In the combined treatment group, elevated intraocular pressures were found in three cases after one month, and there were vitreous hemorrhages in two cases after three months. Conclusions: The combined treatment showed significant early improvements in BCVA, CMT, and NVs regression for up to three months. However, long-term follow-up and additional treatment was necessary in the patients with persistent or recurred NVs and macular edema after three months. J Korean Ophthalmol Soc 2010;51(6):842-848