직교배열법에 의한 선삭가공시 칩절단성 평가

배병중,박태준,양승한,이영문 한국공작기계학회 2000 한국공작기계학회 추계학술대회논문집 Vol.2000 No.-

The object of this paper is to evaluate the chip breakability using the experimental equation of surface roughness, which is developed in turning by an orthogonal array method. L_(9)(3⁴) orthogonal array method, one of fractional factorial design has been used to study effects of main cutting parameters such as cutting speed, feed rate and depth of cut, on the surface roughness. The evaluation of chip breakability is used the chip breaking index(C_(B)), non-dimensional parameter. And the analysis of variance (ANOVA)-test has been used to check the significance of cutting parameters. Using the result of ANOVA-test, the experimental equation of chip breakability, which consists of significant cutting parameters, has been developed. The coefficient of determination of this equation is 0.866.

림프관종

배재문,한호성,김영우 梨花女子大學校 醫科大學 醫科學硏究所 1996 EMJ (Ewha medical journal) Vol.19 No.2

목적: 림프관종은 흔한 질환이 아니므로 보고된 례들도 많지 않아 그 임상적 특성이 매우 다양하게 보고되어 있다. 저자들은 최근 2년 6개월간 14례의 림프관종을 경험하였기에 림프관종의 임상적 특성을 분석하는 것이 의의가 있을 것으로 판단하였다. 방법: 1993년 9월부터 1996년 3월까지 이화여자대학교 의과대학부속 목동병원에서 치료받았던 14례의 림프관종에 대하여 임상기록을 통한 후향적 분석을 하였다. 임상적 특성은 증상, 종양의 위치, 지난방법, 종양의 크기, 치료방법 그리고 합병증 및 재발여부에 관하여 분석을 하였다. 결과: 1) 림프관종 발견 연령분포는 4주 이내가 4명, 4주 이상 2세 이하가 4명이었고 2세 이상 10세 이하가 3명이었으며 남자가 6명, 여자가 8명으로서 남녀비가 1 : 1.3 이었다. 2) 증상으로는 신체 각 부위의 종괴로 나타나는 경우가 71.4%로서 가장 많았다. 3) 발생부위는 전흉벽과 액와부에 가장 많이 발생하였다. 4) 림프관종의 진단방법으로는 초음파가 유용한 진단적 가치가 있었다. 5) 림프관종의 크기는 5cm 이하가 6례(42.9%), 5cm 이상 10cm 이하가 6례(42.9%), 10cm 이상 15cm 이하가 2례(14.2%)였다. 6) 치료방법의 주류는 완전절제이며 수술후 합병증이나 재발의 례는 없었다. 결론: 림프관종은 종괴의 감별진단에서 꼭 염두를 두어야 하며 특히 소아의 종괴일 경우 림프관종을 감별하여야 한다. Objectives : Lymphangioma is an infrequent disease. Few cases of lymphangioma has been reported, so its clinical characteristics are variale. We had experienced fourteen patients of lymphangioma during relatively short period, two and half years. It was worth to analyze the clinical characteristics of the lymphangioma. Methods : A clinical analysis was made in fourteen patients with lymphangioma who had been admitted to Ewha Womans University Mokdong Hospital from September, 1993 to March, 1996 retrospectively by the review of clinical records. The characteristics were about the symptoms, locations, diagnostic methods, sized of tumor, treatment, and complications. Results : were summerized as following 1) The sex ratio was 1 to 1.3(male to female) and the most prevalent age group was less than 10 years(78.6%) 2) The most common presenting symptom was a mass(71.4%) 3) The locations were trunk and axillary(35.7%), retroperitoneum(21.4%), extremity(21.4%), neck and mesentery in decreasing order. 4) The ultrasonogram was a useful disgnostic method of lymphangioma(71.4%). 5) The size distribution of tumors were 42.9% in less than 5cm, 42.9% in 5 to 10cm, and 14.2% in 10.1 to 15cm. 6) The treatment of choice was complete excision. There was no complication, or recurrence. Conclusion : lymphangioma should be considered as differential diagnosis in patients with mass, especially children.

Ammonium Sulfide Passivation를 이용한 Indium Tin Oxide / Indium Phosphide 위성용 태양전지

배성호,한교용,김현태,이영철 嶺南大學校 工業技術硏究所 1996 工業技術硏究所論文集 Vol.24 No.1

To improve efficiency, ITO/InP solar cells were firstly fabricated and characterized by employing ammonium sulfide passivation technique. Indium Tin Oxide was rf sputtered on the Zn doped (100) p-InP substrate. Our results showed that the short-circuit current was greatly increased and the open circuit voltage was also enhanced. Therefore, the expected performance improvement could be achieved.

슬라이딩 섹터를 갖은 가변구조제어를 이용한 추적제어

배상현,한종길,손영수 朝鮮大學校 電子情報通信硏究所 2003 電子情報通信硏究所論文誌 Vol.6 No.2

제어이론의 중요한 문제는 유한시간 안에 정해진 수준의 오차 안에서 상태가 원하는 궤적을 따라 이동하도록 플렌트를 제어하는 것이다. 본 논문은 슬라이딩 섹터를 이용한 새로운 추적제어 방식을 제안하며, 슬라이딩 섹터에 라아프노프 함수를 이용하여 안정도를 분석한다. 시스템에 컴퓨터 시뮬레이션을 통하여 제안한 슬라이딩 섹터 제어가 채티링을 줄일 수 있는 것을 확인한다. A problem of major importance in control theory is that of controlling the plant in order to have the state tracking a specific reference trajectory within a prescribed level of tracking error in a finite time. In this paper, new methods of the tracking control using the sliding sector is proposed. This paper analyzes the stability, using Lyapunov function on the sliding sector. Through the computer simulations for the system, it is verified that sliding sector control is capable to reduce the chattering.

다발성으로 피부절을 수반한 대상포진 뇌수막염 1예

한동철,박종호,신원철,이영배,박현미,신동진 대한노인병학회 2004 대한노인병학회지 Vol.8 No.1

춘천시 문화시설의 활성화

한영호,진광배,이낙운 강원대학교 조형예술연구소 2005 조형예술논문집 Vol.6 No.-

There are lots of cultural facilities and variety cultural event and festival in Chuncheon city. However it avail nothing that using cultural facilities are preponderated to the part of them. The cultural facilities are dispersed to entire city. And the sequence is not linked, because they are constructed separately without a flow of consecutive connection .It will be improved by proper zoning, grouping and networking which are based on the accessibility and the property for practical use of institut ion and efficient management. So, we suggest the construction of cultural complex town that improve the usefulness of cultural facilities, in the region of Uiam lakeside and Gunhwa-dong. It will be conductive to activate the cultural facilities and specializing the city. and In Camp Page site transfer plan, the city needs to plan ahead to use the site as the symbol of culture of Chuncheon city. And the requirements are as follows, we should specialize the site with arranging various cultural facilities. Also, it includes creating cultural street with effective and systematic connection with cultural facilities.

대학홍보 매체물의 홍보 효과에 관한 연구

한태준,배영훈 한국스포츠리서치 2003 한국 스포츠 리서치 Vol.14 No.6

As the result of analyzing the effect of publicity in the P. R. media from grade 12 students, it was understood, in case of boys, that the more application to the P. R. media on the college newspaper, the higher effect they had. Also, it was proved the same positive correlation in the college P. R. videos. However, the more application to the radio, in case of girls, the higher effect on P. R. The more necessary information on college through the P. R. media they acquired, the higher P. R. effect they had. Through internet, magazines to the higher grade, TV advertisement and college newspaper, the P. R. activities shall be made at the same time and it will consequently make a difference from the other colleges in the contents of advertisement, with the P. E. department on campus.

일반골퍼의 성취목표성향과 참여동기가 스포츠 몰입에 미치는 영향

한태준,배영훈,박현숙 한국스포츠리서치 2004 한국 스포츠 리서치 Vol.15 No.6

A study is to analyze how a participating motivation and achievement goal orientation of amateur golfers concentrate on sports and the results are as follows.: First, there was no significant difference on sex in the achievement goal orientation, however, the better record, the more selforiented and retention-oriented. Second, men had a higher participating motivation in pleasure and sociability, on the contrary, women had one in health and physical strength. The highest level of participating motivation among men was pleasure and that among women was physical condition Third, the expected factors on sports concentration were given different depending on golf records. The higher record, the more importance in inner motivation factors rather than external ones or achievement goal orientations. To make them participate in playing golf continuously, the participating motivation of sports should be given differently according to the level of competition. It is required to study the ways in succession how to rase the level of concentration on sports with the less competition, the higher concentration.

슬라이딩 섹터에 근거한 제어기 설계

배상현,손영수,한종길 조선대학교 전자정보통신연구소 2001 電子情報通信硏究所論文誌 Vol.4 No.2

A sliding sector is defined as a subset the state space, inside which some norm of state decreases with zero control input. The variable structure controller with sliding sector is designed to transfer the system state from the outside to the inside of the sliding sector in a finite time and enable the system state stay inside the sliding sector, and the resulted VS control system is quadratically stable. The simulation results are its effectiveness.

자일리톨 껌 저작에 의한 유치 우식증 예방효과 비교분석

한성근,최연희,손은영,송근배,김영진,남순현 大韓小兒齒科學會 2004 大韓小兒齒科學會誌 Vol.31 No.2

자일리톨 껌 저작에 의해 어린이들의 유치우식증 예방효과를 평가하기 위하여 3개 어린이집에서 만 5~6세 어린이 123명을 최종 선정하였다. 자일리톨 껌을 씹는 군(42명), 솔비톨 껌을 씹는 군(42명) 그리고 아무런 조치도 취하지 않은 대조군(39명)으로 나누어 12개월 동안 하루 5회씩 껌을 저작하게 한 다음 구강검사와 우식활성 검사를 통해 유치우식증 예방효과를 비교 분석 하였다. 12개월 동안 대조군 어린이들에서는 dfs index가 5.19개면 증가하였고 솔비톨 군에서는 2.96개면이 증가한 반면 자일리톨 군에서 2.62개면이 증가하여 대조군에 비해 자일리톨 군은 47.1%가 감소하였고 솔비톨 군에서는 43.6%가 감소한 것으로 나타났다. Dentocult-SM strip 검사 및 site strip 검사 결과 모두에서 대조군에 비해 자일리톨 껌과 솔비톨 껌을 씹은 군의 아동들에서 우식활성도가 공히 감소되었다. 따라서 본 연구와 같은 집중적인 자일리톨 껌의 저작 사업은 대상자들과 부모들의 사업에 대한 호응도가 높았고, 사업 시행이 다른 국책 구강보건사업에 비해 용이하였으며 특히 유치우식증 예방적인 측면에서 효과적인 것으로 나타났다. The effect of xylitol and sorbitol chewing gums on dental caries levels among 5-year old kindergarteners was investigated. Three kindergartens the operations of which were partly subsidized by municipal government of Daegu city, Korea, were chosen as the study sites. The child base of the kindergartens were considered demographically and ethnically similar, representing middle-income families. The subjects were examined at their own kindergarten by the two dentists. Participation in the program was voluntary. Over 12 months, 123 participants chewed xylitol chewjng gums(X group; 42 subjects), sorbitol chewing gum@ group; 42 subjects), or did not receive chewing gum as a control group(C group: 39 subjects). Consumption of xylitol and sorbitol was 4.5 to 5.0 g/day/subject, consumed in five daily chewing episodes of 5 min. Oral examination, Dentocult-SM test and interproximal dental plaque collection were completed at baseline and 12 months later. The dmfs of group C increased 59.2%. but group S increased 33.4% and group X increased only 31.3% during 12 months study period. The caries prevention ratio was 47.1% at group X and 43.6% at group S. There also appeared the reduction of caries activity at group X(1.39), group S(1.50) than control group(1.79). Compared with groups S and C, there was a statistically significant reduction of S. mutans in interproximal plaque in group X. The results suggest that xylitol chewing gum can prevent dental caries of deciduous dentition, and may be a little more effective than a sorbitol-containing product in controlling some caries-associated parameters in kmdergarten-age subjects.