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김주필(Joo Pil Kim),정혜리(Hye ri Jeong),김대희(Dae Hee Kim),박동우(Dong Woo Park),서재웅(Jae Woong Seo),이현우(Hyun woo Lee) 한국거미연구소 2017 한국거미 Vol.33 No.1
2016년 3월 31일부터 7월 31일까지 서울특별시 서초구 서초동에 위치한 서울고등학교 교정 일대를 서울고등학교 환경생물부 부원들이 채집 조사한 결과 20과 43속 53종의 거미가 조사 연구되어 이에 보고하는 바이다. From March 31st to July 31st in 2016, members of an environmental biology club at Seoul High School located in Seocho-gu, Seoul, Dae-Hee Kim, Dong-Woo Park, Jae-Woong Seo and Hyun-woo Lee, collected 20 families 43 genera 53 species of spiders and report the result of the study here.
서승록,신현재 대구대학교 (한사대학) 산업기술연구소 1982 産業技術硏究 Vol.2 No.1
Modern industry has been established by the factory system industry, depending upon the industrial revolution which once caused the worldwide unemployment but has brought wealth and prosperity to the whole-world-peoples. The industrialization of the factory system has resulted; first, the posibility of mass production through the technical specialization, second, the reduction of working hours and efforts by the mechnization, third, the rationalization of production with the scientific method, fourth, the establishment of the foundation of modern capitalism. Therefore, the influences of the industrial revolution to the society through the industrialization process should be well reilluminated once more in all its affirmative aspects.
Jae‑Bong Lee,Dong‑il Seo,Hyun Young Chang 대한금속·재료학회 2020 METALS AND MATERIALS International Vol.26 No.1
A new concept to evaluate the localized corrosion resistance of stacked Ti alloys such as additive-manufactured (AM)Ti–6Al–4V alloy is proposed. Crevice corrosion of subtractive-manufactured (SM) Ti–6Al–4V occurred on the surfacebeneath the crevice former, whereas localized corrosion of the AM alloy occurred in any vulnerable site irrespective of thecrevice assembly. The electrochemical critical localized corrosion temperature (E-CLCT) was measured to evaluate theresistance of AM Ti–6Al–4V alloys to localized corrosion. The results showed that the localized corrosion of AM Ti–6Al–4V was attributable to the anisotropy and microstructure that resulted from rapid cooling, which were completely differentfrom the anisotropy and microstructure of SM Ti–6Al–4V. The optimum applied potential of AM Ti–6Al–4V in 25 wt%NaCl aqueous solution was deduced. The E-CLCT provides a useful criterion for determining the resistance of AM Ti alloysto localized corrosion and for comparing their resistances.
내용기반 이미지 검색 시스템에 대한 고찰과 설계 요건에 대한 연구
서재현,서상환,김흥식 인제대학교기초과학연구소 1998 자연과학 Vol.2 No.-
멀티미디어 데이터베이스의 내용기반 검색은 색인 기술을 요구한다. 전통적인 데이터베이스와는 달리 데이터 항목은 기본이 되는 데이터 타입들의 속성의 집합으로 나타내어지는데, 멀티미디어 데이터베이스에 있는 멀티미디어 객체는 특징들의 수집에 의해 표현되고, 객체 내용의 유사성은 문맥과 참조의 프레임에 의존하며, 객체의 특징은 다중양식 특징 측정에 의해 특성화된다. 내용기반 이미지 검색을 단계별로 3가지 큰 작업으로 나누어 보면 해당 이미지를 가장 정확하게 특징들을 추출하는 단계와 그 추출된 특징을 효과적이고 능률적으로 저장, 검색을 지원하는 단계와 다시 이미지의 유사성을 검출해 내는 단계로 요약된다. 본 논문에서는 기존에 연구된 이미지 특징 추출들을 연구 분석하고 이미지 내용 기반 검색에 적합한 다양한 특징 추출과 유사도 검색에서의 문제점과 이에 대한 적합한 설계요건에 대해 제시한다. Content-based retrieval of multimedia database calls for content-based indexing techniques. Different from conventional databases, where data items are represented by a set of attributes of elementary data types, multimedia objects in multimedia databases are represented by a collection of features; similarity of object contents depends on context ad frame of reference; and features of objects are characterized by multimodal feature measures. Try to divide content-based images retrieval systems into three large operation, it is consist of the following three phases; extracting features that can represent images the most exactly, storing the extracted features effectively and efficiently and support retrieval, detect similarity of images. In this paper we first investigated and analyse the existing image feature extraction methods and various features extraction that adequate for content-based image retrieval and problem of similarity retrieval, we also present design of suitable demand.
제통단이 퇴행성 슬관절염 환자의 삶의 질에 미치는 영향
서병관,류성룡,강중원,우현수,이상훈,이재동,최도영,김건식,이두익,이윤호 EAST-WEST MEDICAL RESEARCH INSTITUTE KYUNG HEE UNI 2005 東西醫學硏究所 論文集 Vol.2005 No.-
Objectives : to evaluate the effects of Jetongdan, the newly developed herbal medicine, on the quality of life in patients with osteoarthritis of knee Methods : Placebo-controlled, randomized clinical trial on the 80 patients with osteoarthritis of the knee was fulfilled. After enrollment, they took medication as they enrolled. And they were asked to answer the questionnaires (Korean Health Assessment Questionnaire (KHAQ), Lequesne's functional index (LF1), visual analogue scale (VAS)) and analysed with the erythrocyte sedimentation rate (ESR) at baseline, after 4 weeks and 8 weeks of medication. Results : Total KHAQ score, some categories of KHAQ like hygiene, activities were significantly improved after 8 weeks of medication. And the change of the KHAQ score was significantly correlated with the change of VAS. But LFI, VAS, ESR level was not significantly improved, and it was considered because of the short medication period and small size of study population. Conclusion : In conclusion, Jetongdan could improve the health-related quality of life in patients with osteoarthritis of knee. Further study in the large population, in long period were recommended.
백종현,소창배,이은영,이지숙,신은경,박은호,서정아,양재홍,송준영,박선자,박요한,최영식 고신대학교의과대학 2007 고신대학교 의과대학 학술지 Vol.22 No.2
Familial adenomatous polyposis (FAP) is an autosomal dominant syndrome, typically characterized by multiple colorectal adenomas and increased incidence of colorectal carcinomas if it is not treated. Moreover, a variety of extracolonic manifestation are seen. The prevalence of thyroid tumors developing in patients with FAP is about 1∼2%. Generally, papillary thyroid cancer indicates low mortality but ,however, as people get older, the cancer becomes more aggressive. So, the operation is required. Recently we experienced a case of FAP, presenting with papillary thyroid carcinoma, and reported with a brief review of literatures.
77K와 상온에서 CO(NH₂)₂의 ¹⁴N Pulsed NQR 연구
강재필,박영민,전인,김성재,최숙자,박현진,송승기,서용문 명지대학교 자연과학연구소 1996 자연과학논문집 Vol.13 No.-
77K와 상온에서 CO(NH₂)₂분말 시료의 ??N Pulsed NQR실험을 하여 위와 아래 공명 진동수, 핵 사중극 결합상수, 비대칭 인자, 스핀-스핀 완화시간, 결정 격자 진동에서의 평균 비틀림 진동수, 진동자의 관성 모먼트 등을 구하였다. 공명 진동수의 온도 의존성은 전형적인 Bayer이론의 격자 진동에 의한 주파수 변화를 보였다. Bayer-Kushida이론의 고온근사식을 실험값에 적용하여 OK에서 공명 진동수 ν??와 ν??를 구했으며, 77K와 상온에서의 스핀-스핀 완화시간 T₂를 관측했다. 상온에서 T₂의 감소는 결정 내의 reorientation motion과 관련이 있을 것으로 보인다. Upper and lower resonance frequencies, nuclear quadrupole coupling constants, asymmetry parameters, spin-spin relaxation time, average torsional frequency in the crystal lattice motion and moment of inertia in the oscillator are found for CO(NH₂)₂powder sample by using ??N Pulsed NQR(Nuclear Quadrupole Resonance) technique at 77K and room temperature. Temperature dependence of resonance frequencies showed frequency variation in agreement with the typical Bayer's theory in lattice motion. Resonance frequencies ν?? and ν?? at OK were obtained by fitting the high temperature approximation of Bayer-Kushida theory to the experimental data and spin-spin relaxation time (T₂) was observed at 77K and room temperature. Decrease of T₂at room temperature was explained by the effect of reorientational motion in the crystal lattice.
조현찬,서재용 한국기술교육대학교 1999 論文集 Vol.6 No.1
This paper presents an approach to obtain a reduced neuro-fuzzy model for a plan. To decide which rules we may eliminate dependancy in rough set theory is used. The rapid convergence of the number of the redundant rules must be accomplished by our method. We don't need to cluster the input space from the raw data and furthermore don't worry about ε-completeness, which we have to consider when clustering the initial input space. However many rules it has, neuro-fuzzy model can be reduced rapidly for dependency seek for every rule worthless. Experimental results demonstrate the effectiveness of using dependency to measure the contribution of any rule to the model.