Monte Carlo 시뮬레이션을 이용한 이온 주입시의 점결함 분포의 계산

손명식,이준하,변기량,황호정 중앙대학교 기술과학연구소 1995 기술과학연구소 논문집 Vol.25 No.-

이온 주입시의 점결함 분포를 간접적으로 계산하기 위해 단결정 실리콘에서의 3차원 이온 주입 시뮬레이터인 TRICSI (TRansport Ions in Crystal Slilicon) Monte Carlo 코드를 확장하여 Boron 이온 주입시의 에너지와 dose에 따른 불순물(particle) 및 점결함 분포(point defect)를 계산하였다. 결함 분포는 Modified Kinchin-Pease equation을 단결정 실리콘에 적용하여 displacement damage에 의해 발생한 Frenkel Pair(vacancy-interstitial)분포를 계산하였으며 이온 주입시의 웨이퍼 온도에 의한 Frenkel Pair 소멸 효과는 고려하지 않았다. 계산 결과는 3차원 각면으로의 2차원 투영 불순물 농도로 표현하고 주입된 dose와 에너지에 다른 마스크 주입시의 에너지 및 dose 의존성 도펀트 분포와 이에 따른 damage 분포를 이해하는 데 중요한 정보가 될 것으로 기대된다. We extended our ion implantation simulator, TRICSI (TRansport lons in Crystal Slilicon) Monte Carlo(MC) code, and indirectly calculated particle and its generating point defect distributions depending on energy and dose during boron implantation into <100> single0crystal silicon. The point defect distribution of Frenkel Pair(vacancy-interstitial) was abtained by applying the modified Kinchin-Pease equation, which usually uses in MC simulation in amorphous target, to MC simulation in crystalline silicon. We did not considered the annihilation of Frenkel Pairs due to wafer temperature. The calculated results were projected onto each free-dimensional plane, presented as two-dimensional concentration profile on it. The particle concentration profile was presented with typical open mask structure. We expect that these results help understand the dopant and its generating damage distributions depending on energy and dose during boron implantation.

HEI(High Energy Ion Implantation)공정 분석 모의 실험 도구 개발에 관한 연구

손명식,황호정 중앙대학교 기술과학연구소 1998 기술과학연구소 논문집 Vol.28 No.-

본 연구에서는 Retrograde Well 형성 공정, 누설 전류를 억제하기 위한 매몰층(baried layer)형성 고정, 필드 산화층의 필드 분리(field isolation)을 위한 공정과 게이트 구성 후의 이온 주입 공정을 위해 필수적인 고 에너지 이온 주입 에너지(HEI) 공정 영역(200KeV 이상 영역) 에 대한 보다 신뢰성 있는 3차원 공정 모델링 및 검증 작업을 통해 신뢰성과 예측성을 동시에 갖춘 실제 공정에서 분석 도구로서 사용 가능한 시뮬레이터를 구성하여, HEI 공정이 소자 특성에 미치는 효괄르 분석하고자 한다. 특히, 필드 분리(field isolation) 공정 및 게이트 구성 후의 이온 주입 공정을 위한 산화층 의존성의 신뢰성을 확보하기 위해서 산화층이 있는 3차원 MOS 구조에서의 HEI공정 분석을 포함시키고자 한다.

유비쿼터스(ubiquitous) 환경에서의 개인용 디지털 시스템 디자인 연구

최명식,손혜란 경희대학교 디자인연구원 2005 예술· 디자인학연구 Vol.8 No.2

디지털 세상은 이제 또 다른 중요한 변화의 동력을 맞고 있다. 언제 어디서나 때와 장소를 가리지 않고 온라인 네트워크에 연결되어 서비스를 받을 수 있으며, 산업뿐만 아니라 살의 방식, 문화, 정치까지도 변화시킬 수 있는 유비쿼터스(Ubiquitous) 환경이 중요한 변화의 주역이 되고 있다. 또한 빠르게 발달하는 이동통신 기술의 발달로 인하여 제품들은 소형화를 이루고 옷에 부착된 단추만한 무선컴퓨터가 길거리, 버스안, 극장 등 언제, 어디에서나 자신이 원하는 곳에서 정보를 보내고 얻을 수 있게 되고, 디지털세상은 이제 또 다른 중요한 변화의 동력인 디지털 융복합화, 즉 디지털(Digital) 컨버전스(Convenience) 트렌드가 전 세계의 산업계의 화두로 떠오르고 있다. 급속도로 발달하는 모바일 제품과 정보가전제품의 지능화 등 유비쿼터스는 과거에는 상상하지도 못했던 편리함과 효율성으로 우리 생활에 활력을 가져다주고 있다. 이에 본 논문에서는 39회 대한민국 산업디자인전에서 수상한 작품으로 "유비쿼터스 환경에서의 개인용 디지털 컨버전스 제품디자인" 에 대해 제안해 보았다. Digital world is facing another significant power of change. Ubiquitous environment in which we can use services through entire networks anytime and anywhere, and lifestyles, culture and politics as well as industry can be changed is appearing as a leader of the change. Thanks to rapidly-developing mobile communication, production of small-sized products is possible, and information can be transmitted irregardless of the places such as streets, buses and theaters and time through wireless computers attached to buttons of clothes. The Digital World centering on digital fusion, that is, digital convenience trend, is appearing as a topic of conversation in industry. Ubiquitous such as mobile products which have rapid development and digital electric home appliances has brought energy to our life thanks to its convenience and efficiency. Therefore, this study speculates "Personal Digital System in Ubiquitous Environment" which was awarded in the 39th Korea Industrial Design Competition.

개에 있어서 심장사상충증을 동반한 창상성 횡격막 허니아의 수술적 치료 1례

조승혁,임영환,손정민,노경완,박창식,전무형,김명철,송근호,정성목 忠南大學校 獸醫科大學 動物醫科學硏究所 2005 動物醫科學硏究誌 Vol.13 No.-

A 7-month old, castrated male Shih-tzu dog was referred to the Veterinary Medical Teaching Hospital of Chungnam National University with history of depression, dyspnea, mild scale, tachypnea, exercise intolerance and severe leanness. On physical examination, cardiac arrhythmias was heard and heart worm ELISA test was positive. Microfilaria was found on the direct blood smear. Survey radiographs showed loss of diaphragmatic line and cardiac silhouette, displacement of lung fields and presence of gas filled intestines in the thoracic cavity. Rib fracture and pelvic fracture with callus formation were found incidentally. On the basis of physical examination and radiographic findings, it was diagnosed as traumatic diaphragmatic hernia and heart worm disease. Herniorrhaphy was performed. Postoperatively, it was treated for heart worm disease and scale. There is no evidence of recurrence of diaphragmatic hernia and heart worm disease over 1 year.

개에 있어서 심장사상충증을 동반한 창상성 횡격막 허니아의 수술적 치료 1례

조승혁,임영환,손정민,노경완,박창식,전무형,김명철,송근호,정성목 충남대학교 형질전환복제돼지연구센터 2007 논문집 Vol. No.10

A 7-month old. castrated male Shih-tzu dog was referred to the Veterinary Medical Teaching Hospital of Chungnam National University with history of depression. dyspnea. mild scale. tachypnea. exercise intolerance and severe leanness. On physical examination. cardiac arrhythmias was heard and heart worm ELISA test was positive. Microfilaria was found on the direct blood smear. Survey radiographs showed loss of diaphragmatic line and cardiac silhouette. displacement of lung fields and presence of gas filled intestines in the thoracic cavity. Rib fracture and pelvic fracture with callus formation were found incidentally. On the basis of physical examination and radiographic findings. it was diagnosed as traumatic diaphragmatic hernia and heart worm disease. Herniorrhaphy was performed. Postoperatively. it was treated for heart worm disease and scale. There is no evidence of recurrence of diaphragmatic hernia and heart worm disease over 1 year.

만성정신질환의 욕구에 대한 수요자와 공급자 측면의 비교연구(Ⅰ) : 만성정신질환자의 정신보건 욕구사정 도구 개발 예비 연구 The Development of Needs Assessment Tool for Mental Health of Chronically Mentally Ill(Preliminary Study)

이종국,한은선,안강호,김명식,김장배,손봉희,이주호 용인정신의학연구소 1999 용인정신의학보 Vol.6 No.2

미용사들의 이직욕구에 관한 연구 : 직무스트레스, 근골격계 증상을 중심으로 Focusing on Musculoskeletal Symptoms and Occupational Stress

서은경,문덕환,박명희,김정원,황용식,손병철,김대환,이창희,김휘동,이채언 인제대학교 백병원 2002 仁濟醫學 Vol.23 No.5

Objective : This study was conducted to prepare the fundamental data on desire of job transfer in hairdresser and prevent the health impairment of hairdresser due to occupational stress and musculosketetal symptoms. Methods and Material : The author surveyed the desire of job transfer and muscurlosketetal symptoms and occupational stress with self-reported questionnaire to 105 hairdresser who were working in beautyshop of Busan area and also 121 student in department of cosmestology as control group. Results : The results were as follows: 1. The rates of self reported symptom were 81.0% for shoulder, 72.4% for back, 67.6% for knee, 58.1% for hand in hairdresser, and 79.3% for shoulder, 71.9% for back, 66.9% for neck, 64.5% for hand and knee in student. 2. The rate of musculoskeletal symptom by NIOSH criteria was 36.2% in hairdresser, it was higher than student group(24.8%)(p<0.1). Occupational stress of the groups by occupational stress category was high as decision latitude, skill discretion, psycological job demand, decision authority in order. 3. The results of logistic regression of related varibles with desire of quitting job by logistic regression were statistical bordline significance between desire of quilting and social support(p<0.1). Conclusion : As above results, the author suggest to prepare the preventive program an musculoskeletal symptoms in hairdresser, especially shoulder, and also to control the occupational stress to hairdresser in beauty shop because occupational stress can be a factor of desire of quitting job.

만성정신질환자의 욕구에 대한 수요자(환자)와 공급자(치료자) 측면의 비교 연구

안강호,이종국,한은선,김명식,김장배,손봉희 대한생물치료정신의학회 2000 생물치료정신의학 Vol.6 No.1

Objectives : We performed this study to assess the needs of the chronically mentally ill(CMI) from the perspectives of the consumers(patients) and the providers(therapists) and to compare the differences between them. We also aimed to find met needs and unmet needs and then to determine the priority of the mental health services for the CMI. Methods : 165 patients and 19 therapists were examined with need assessment tool which had been developed by authors. Through statistical analysis, we evaluated the degree of problem, the degree of intervention, the relative degree of problem, and the degree of demand in each areas of needs, and compared the differences between patient group and therapist group. After then met needs and unmet needs from the perspectives of each group were revealed. Results : 1) There were differences in the assessment of needs between patients and therapists. 2) The more problem areas assessed by patients were finances, mental health, occupation, and leisure life in order of higher ranks. While occupation, leisure life, mental health, and finances were assessed as highly ranked problem areas by the therapist group. 3) Patients perceived that they were given more helps from others in the areas of mental health, physical health, accommodation, and relation to family than other areas. From the perspective of therapists, the areas of needs such as mental health, basic knowledge, occupation, and interpersonal retation were highly ranked intervention areas. 4) The demands for daily living skill, occupation, finances, accommodation were ranked highly by patient group. Highly demanded needs assessed by therapist group were mental health, occupation, interpersonal relation, and basic knowledge. 5) Unmet needs assessed by patient group were occupation, finances, and accommodation, while by therapist group, occupation. Conclusions : The needs of the CMI were assessed and identified by the consumers(patients) and providers(therapists) with the same tool. The differences between two groups were revealed. The most important unmet need of the CMI was occupation. These results can be used to plan the priority of mental health services and policies.

퍼머제의 중금속 농도에 관한 연구

윤복연,문덕환,박명희,황용식,함성애,손병철,김대환,이창희,김휘동,이채언 인제대학교 백병원 2002 仁濟醫學 Vol.23 No.5

Objective : This study was conducted to prepare the fundamental data on heavy metal concentration in hair permanents agents and to prevent the health impairment due to heavy metal. Methods and Material : The author determined of 5 heavy metals(Pb, Cr, Mn, Ni, and Cu) concentration hair permanent agents in the market with flameless atomic absorption spectrophotometer. Results : The results were as follows: 1. The geometic mean concentrations of total subjects were 0.04㎍/g for Pb, 0.09㎍/g for Cr, 0.06㎍/g for Mn, 0.03㎍/g for Ni, and 0.04㎍/g for Cu. 2. The most highest mean concentrations of heavy metals in hair permanent agents by using type were Cr for wave agent and straight cream agent, Cu for setting iron agent, Cr and Cu for coating perm agent. 3. Metal most hlghest mean concentrations of heavy in hair permanent agents by type of color was green for Cu. 4. The mean concentration of Cu among 5 heavy metals in hair permanent agents by marker was most highest. 5. There was most statistically significant difference on mean concentration in hair permanent agents between domestic and foreign products. 6. The exposure amount of heavy metal concentration by one time using the permanent agent were 4.O㎍ for Pb, 9.O㎍ for Cr, 6.0㎍ for Mn, 3.O㎍ for Ni and 4.0㎍ for Cu. Conclusion : As above results author suggest to prepare the preventive program of health impairment due to heavy metal by long term chronic exposure to who were using the hair permanent agents hair designer and customers.

Physically-Based Three-Dimensional Ion Implant Modeling and Simulation for ULSI CMOS Process Technology Development and Manufacturing

Myung-Sik Son(손명식),Ho-Jung Hwang(황호정) 대한전자공학회 1997 대한전자공학회 학술대회 Vol.1997 No.6