초음파 펄스에코 데이터 기반 3차원 시각화 방법론

권정현,장홍래,성제중,안형근,장순재,송문호 한국비파괴검사학회 2003 학술대회 논문집 Vol.- No.1

The nondestructive testing using ultrasonic pulse-echo data is an effective test methodology esperially for metal structure. Typically, the ultrasonic pulse-echo data is processed and the results are shown in A-scan, B-scan or C-scan formats. Upon viewing B-scan and C-scan data the viewer is able to identify the location of faults as well as their rough dimension. In this paper, we evaluate the applicability of various 3-D visualization methods frequently used in medical imaging, namely, surface rendering (SR), volume rendering (VR) and maximum intensity projection (MIP), for nondestructive testing purposes. Such 3-D visualization of ultrasonic pulse-echo data enables easier identification of the location and dimension of faults more accurately.

수중액중의 중금속에 대한 녹차의 흡착성질

권이열,김미경,이동섭,홍순영,전혜옥 漢陽大學校 環境科學硏究所 1992 環境科學論文集 Vol.13 No.-

본 연구는 수용액중의 중금속에 대하여 녹차를 이용하여 흡착능을 고찰하였다. 실험에 사용된 녹차는 시판되는 "태평양화학 설록차(2번차)"를 40∼60mesh로 만들어 사용하였다. 각 중금속이온을 함유한 시료용액에 녹차를 첨가하여 흔든 다음, 원심분리해서 상등액중의 각 이온농도를 원자흡광광도계로 측정했다. 그 결과, 각 조건에서 녹차에 의한 중금속의 최대흡착율은 Cu(Ⅱ)는 65∼78%, Cd(Ⅱ)는 78∼82%, Pb(Ⅱ)는 82∼92%였으며, 반응초기 10분간에 최대흡착율의 90%가 일어났다. The adsorptivities of the green-tea particles on Pb(Ⅱ), Cd(Ⅱ) and Cu(Ⅱ) ions were examined by measurements of the adsorption percentage under various conditions, and the method to collect and remove the metallic ion in aqueous solutions were described. Each of 100ml sample solution of Pb(Ⅱ),Cd(Ⅱ) and Cu(Ⅱ) ions mixed with 2g of the green-tea under stirring for minutes. The solutions were then centrifuged, and the concentrations of Pb(Ⅱ), Cd(Ⅱ), and Cu(Ⅱ) ions in the supernatant solution were determined by the atomic absorption spectrometer. As the results, the adsorption equilibrium of Pb(Ⅱ), Cd(Ⅱ) and Cu(Ⅱ) ions were reached to equilibrium by shaking for about 30∼40minutes. Then adsorptivities were 84%, 79% and 65% respectively.

18~24세 한국과 몽골여성 체형비교(제1보)

권순정,홍정민 한국의류산업학회 2004 한국의류산업학회지 Vol.6 No.5

This study is to explore how consumers' needs for tactile cues affect their purchasing behaviors in the internet shopping mall. Since previous studies about internet shopping malls are mainly performed on the primary factors of perceived risk, there are insufficient studies of tactile cues for apparel products. Emphasis of this study is placed on verifying the following hypothesis; it is expected that consumers' needs for tactile cues affect apparel purchasing behaviors in inter-net shopping. The questionnaire was administered to 20 to 30 year old male and female respondents who are either students or businessmen living in the Busan area. 150 questionnaires were completed and collected for data analysis. The data were, using SPSS 10. 0 for Window, statistically analyzed by frequency and factor analysis for VARIMAX, Cronbach's coefficient and Linear regression analysis. Data were, using SPSS 10. 0 for Window, statistically analyzed by frequency and factor analysis for VARIMAX, Cronbach's coefficient, and ANOVA. The results of data analysis are as follows: First, the tactile cues negatively affect purchase intentions of consumers. This shows that apparel internet shoppers who have high desire for tactical cues tend to avoid purchasing products through the internet. Second, the factor analysis of the moderating effect on perceived risks shows that the perceived risks significantly moderate both the tactile cues and purchase intention of consumers. Third, analysis of purchased experience also shows that purchased experiences significantly moderate both the tactile cues and purchase intention.

18~24세 한국과 몽골 성인여성 체형비교(제2보)

권순정,홍정민 한국의류산업학회 2005 한국의류산업학회지 Vol.7 No.2

The purpose of this study is to classify the body types based on the side view The subjects are 404 Korean and Mongolian women within the 18 to 24 age group. From the results of comparing 28 items of indirect photometric measurements, 15 items were shown to have significant differences. Mongolian women were larger in values for 13 items than were Korean women except two items, which are back projecting point height and abdominal projecting point height. The silhouette of Korean women's front body looks completely different from Mongolian women's. Especially Mongolian women's fore-breast part is much thicker than that of Korean women. The result of analysing the indirect photometric measurement of 4 types which were previously classified by the direct measurements and index values is as follows; Type 1 is normal type, type 2 is lordosis type, type 3 is swayback type, and finally type 4 is fiatback type. The groups of each of the 4 types are further divided into Korean and Mongolian women. Judging from their body types based on the side view, it seems clear that significant differences exist between Korean and Mongolian women's side body shapes in the thickness of their breast part.

재해성 요추 추간판 탈출증의 역학 및 임상적 연구 : 비재해성 추간판 탈출증과 비교분석

권순용,이승구,장일석,김지홍,임영 대한산업의학회 2000 대한직업환경의학회지 Vol.12 No.2

Objectives : The purpose of study was to define the clinical and epidemiological factors of HNP and to provide the meaningful sources for establishing a prognosis and a rationale for clinical management of occupational low back problem. Methods : This study was performed at eight branch hospitals of Catholic University of Korea and several governmental hospitals for occupational disorders around the Kyunggi province of Korea since Jan. 1985. We analyzed the several factors about lumbar HNP through comparative study of the hospital admission series of each 200 patients in both occupation- and nonoccupation related, subjected to epidemiologic and clinical investigation, respectively. Results : 1. Mean age of occupational HNP was younger (30.9±8.8) than non-occupational HNP (35.2±10.5) (p〈0.05). 2. The duration of clinical symptom before admission was longer in non-occupational HNP(19.9±22.8 Mo.) than in occupational HNP(6.9±12.4 Mo.) (p〈0.05). 3. The symptomatic attack before admission was more frequent in non-occupational HNP(3.7±1.9) than in occupational HNP(2.5±0.9) (p(0.05) 4. There were no significant differences in physical findings between two groups, except for low rate (63%) of straight leg raising test (SLR) limitation in occupational HNP compared to non-occupational HNP(83%) (p〈0.05). 5. Even though The main reason for operative intervention was a failure of conservative treatment in both groups (p〈0.05), extruded subligamentous type was predominant(50%) in occupational HNP (p〈0.05), whereas extruded transligamentous type occupied major portion (67.8%) in non-occupational HNP (p〈0.05). Conclusion : The clinical results were poor in occupational HNP in both conservative and operative management groups, compared to non-occupational HNP (p〈0.05) and mean durations admission and re-admission rate was higher in occupational HNP, compared to non-occupational HNP (p〈0.05).

農用트렉터 牽引性能 比較試驗 硏究 : 二輪驅動型과 四輪驅動型 Two-wheel drive and Four-wheel drive

權純洪 건국대학교 1988 論文集 Vol.27 No.2

The tractive performance of a two - wheel drive tractor and four - wheel dirve tractor was measured to obtain data for economical uses and rational managements. The results obtained are summarized as follows ; 1. Maximum tractive force decreased in proportion to tractive speed increased, and that of the four - wheel drive tractor was higher than that of the two - wheel drive tractor. 2. Maximum drawbar power detected in travel speed of sixth gear and that of the four - wheel drive tractor was about 3.5∼7.1 % higher than that of the two - wheel drive tractor in accordance with travel speed. 3. In proportion to the tractive force increased, traction coefficiency, drawbar power and wheel slip radio increased. 4. Maximum fuel consumption ratio detected in travel speed of first gear at the lowest drawbar power and minimum fuel consumption ratio detected in travel speed of sixth gear at the highest drawbar power. Fuel consumption ratio of the four - wheel drive tractor was about 4% higher than that of the two - wheel drive tractor.

노인의 특성을 반영한 단위세대 리모델링 제안 : 장애정도가 낮고 일상생활이 가능한 임대아파트 거주 독거노인 2인을 대상으로

홍유석,제해성,권순정 한국의료복지시설학회 2007 의료·복지 건축 Vol.13 No.2

As a result of rapid aging speed in our society, it is necessary to supply a lot of housing for older people in near future. When we think that high portion of residence in rental housing complex composed of small units is the elderly, the housing units in those apartments have to be designed for the physical, mental, social, and economical conditions of elderly people who lives in such a residential complex. Considering these living conditions of the elderly, this study proposes a remodeling prototype of a living unit for older people in rental housing complex. For the research of this topic, various characteristics of the elderly and the environmental requirements for them firstly have been analysed from the literature survey and the interviews with two residents living in a rental apartment. And the design considerations for each space of the housing unit such as entrance, living room, bed room, bath room, and so forth have been explored. Based on the design guidelines above, the remodeling plan of a housing unit for older people has been propose as a result of this study.

XENIX OS에서 TERMINAL을 이용한 조합형한글 구현에 관한 연구

권순걸,박재철,이현우,서기영,홍성태 慶南大學校 附設 工業技術硏究所 1992 硏究論文集 Vol.10 No.-

제닉스 시스템의 커널에서는 한글을 읽거나 쓸수가 없으며 한글을 구현하기 위해 바이어스콜이나 비디오램을 직접 억세스하는 등의 컨트롤이 허용되지 않는다. 그러나 제닉스 시스템의 입, 출력 시스템을 잘 살펴보면 한글을 사용하기 위한 해결점을 찾을 수 있다. 영문 제닉스는 키보드에서 입력되는 8비트 코드에서 최상위비트를 무시하여 7비트로 스트립 시키는데 이것을 막고 제닉스가 FOH~FFH까지의 코드를 제어 코드로 사용하지 못하게 함으로써 모든 한글을 터미널상에서 사용 할 수 있게 된다. 한편 제닉스의 표준 메일을 이용 할때에는 80H 이상의 코드가 입력되면 모두 \와 8진수의 조합으로 변경시켜서 출력하는 C함수를 사용하기 때문에 이부분을 수정하고 한글 에코 명령이 포함된 쉘 스크립은 8진코드로 바꾸어 주는 소오스를 활용함으로서 제닉스에서 터미널을 이용한 조합형 한글의 구현이 완벽하게 이루어졌다. Hangul can't be read and used from the kernel of XENIX system. To embody Hangul, the control of direct access of BIOS call or video RAM is not permitted. But a solution to use Hangul can be found through the search of input and output system of XENIX system. English XENIX OS disregards MSB from 8bit code inputting from key board and strip 7 bit. To prevent this, stty-istrip command is used. And by using stty-ixion command not to use control code from FOH to FFH of XENIX, All of Hangul can be used at the terminal. To satisfy these conditions stty-istrip-ixon command is inserted at each user's profile. While sending the letter through the standard mail of XENIX, /user/lib/mail. local program is available. then Hangul is not supported on mail. local, the reason is that if the code over ASCII code 80H is inputted in the mail. local program. C function outputting through the change into the combination of all \and octal number is used, but by modifying mail. local, all of Hangul can be available, and the shell script containing Hangul echo command can treat Hangul at the terminal by using convc source which change source to octal code. In this way combinated Hangul using the terminal from XENIX OS ard completely embodied.

인간의 자연성과 자연의 인간성 : 마르크스의 『경제학-철학 수고』 를 중심으로 within the Limit of Marx's 『Economico-Philosophical Manuscripts of 1844』

권순홍 군산대학교 현대이념연구소 1998 現代理念硏究 Vol.13 No.-

실용적인 전자투표 프로토콜 제안

홍영기,이재신,김순석,김성권 중앙대학교 정보통신연구소 1999 정보통신연구소논문집 Vol.1 No.1

정보화 시대에 세계적으로 컴퓨터의 보급 및 네트워크의 발달로 컴퓨터 응용분야에서 많은 발전이 이루어지고 있다. 그 중에서도 암호학을 이용한 전자투표는 전자화 되어 가는 민주 사회에서 필요한 요소로 부각되고 있다. 그러나 지금까지의 전자 투표는 중요성에도 불구하고 많은 문제점이 지적되었다. 본 논문에서는 추적할 수 없는 통신망[1]과 신뢰할 수 있는 선거관리센터를 가정함으로써 전자 투표의 요구사항인 안전성, 공정성, 투표자의 비밀성, 선거 집계의 정확성 등을 만족하는 대규모적이고 실용적인 전자투표 프로토콜을 제안한다. 블라인딩기법(Blinding Technique)을 이용하여 투표자의 투표내용을 노출시키지 않고 투표권을 획득하며, 부정할 수 없는 도전 및 응답프로토콜(Challenge and Responsible Protocol)을 사용하여 투표자와 집계자 사이의 부정을 확인할 수 있으며, 투표자나 집계자의 부정으로 인한 전자 투표의 무결성과 투표자의 프라이버시를 보호하기 위해 투표자의 익명을 기반으로 안전한 전자투표를 방식을 제안한다. We have seen a lot of developments on computer application areas with the wide spread use of computers and the rapid growth of communication network. It is necessary to use a cryptographic technique for electronic voting, but, at present, despite of its importance electronic voting protocols so far have many shortcomings. In this paper, with the assumption of untraceable communication channels and trustable voting centers we propose a large-scale and practical electronic voting protocol satisfying protocol requirements, such as secureness, fairness, privacy of voter and correctness. Voters are able to get a vote without revealing their voted information by using the blinding technique. We can find the injustice between a voter and the tallier by using undeniable challenge and responsible protocol. Also, we proposes a secure protocol that compensates a integrity of electronic voting and protects a privacy of voter from outer attacks as using a anonymity of voter.