LCD 구동 IC의 실장을 위한 초음파 ACF접합 기술

정상원,윤원수,김경수,Joung, Sang-Won,Yun, Won-Soo,Kim, Kyung-Soo 제어로봇시스템학회 2008 제어·로봇·시스템학회 논문지 Vol.14 No.6

In the paper, we develop the ultrasonic bonding technique for LCD driver chips having small size and high pin-density. In general, the mounting technology for LCD driver ICs is a thermo-compression method utilizing the ACF (An-isotropic Conductive Film). The major drawback of the conventional approach is the long process time. It will be shown that the conventional ACF method based on thermo-compression can be remarkably enhanced by employing the ultrasonic bonding technique in terms of bonding time. The proposed approach is to apply the ultrasonic energy together with the thermo-compression methodology for the ACF bonding process. To this end, we design a bonding head that enables pre-heating, pressure and ultrasonic excitation. Through the bonding experiments mainly with LCD driver ICs, we present the procedures to select the best combination of process parameters with analysis. We investigate the effects of bonding pressure, bonding time, pre-heating temperature before bonding, and the power level of ultrasonic energy. The addition of ultrasonic excitation to the thermo-compression method reduces the pre-heating temperature and the bonding process time while keeping the quality bonding between the LCD pad and the driver IC. The proposed concept will be verified and demonstrated with experimental results.

집중조명 / DOI(디지털콘텐츠 식별체계)의 도입과 응용시스템의 개발

정상원,Jeong, Sang-Won 한국데이터베이스진흥원 2000 디지털콘텐츠 Vol.9 No.-

인터넷을 통해 유통되는 디지털콘텐츠의 식별과 접근을 위한 고유식별체계로서 DOI(Digital Object Identifier)의 개발, DOI의 구문구조, DOI의 관리와 운영, DOI 메타데이터와 장르, DOI변환과 핸들 시스템을 소개하고 DOI의 국내 도입을 위한 DOI등록시스템, 변환시스템 검색시스템, INDECS 메타데이터를 이용한 디지털 콘텐츠 유통관리 시스템, DOI참조링크 시스템의 개념적 설계와 구축 내용을 기술한다.

양돈시론

정상원,Jeong, Sang-Won 대한양돈협회 1999 養豚 Vol.21 No.2

열충격 시험을 통한 MLCCs SAC305 무연 솔더 접합부의 IMCs 성장과 접합특성 저하에 관한 연구

정상원,강민수,전유재,김도석,신영의,Jung, Sang-Won,Kang, Min-Soo,Jeon, Yu-Jae,Kim, Do-Seok,Shin, Young-Eui 한국전기전자재료학회 2016 전기전자재료학회논문지 Vol.29 No.3

The bonding characteristics of MLCCs (multi layer ceramic capacitor, C1608) lead-free solder (SAC305) joints were evaluated through thermal shock test ($-40^{\circ}C{\sim}125^{\circ}C$, total 1,800 cycle). After the test, IMCs( intermetallic compounds) growth and cracks were verified, also shear strengths were measured for degradation of solder joints. In addition, The thermal stress distributions at solder joints were analyzed to compare the solder joints changes before and after according to thermal shock test by FEA (finite elements analysis). We considered the effects of IMCs growth at solder joints. As results, the bonding characteristics degradation was occurred according to initial crack, crack propagations and thermal stress concentration at solder-IMCs interface, when the IMCs grown to solder inside.

혈관중심성 T-세포 림프종

정상원(Sang Won Jeong),이상원(Sang Won Lee),윤녕훈(Nyung Hoon Yoon),차승훈(Seung Hoon Cha),박석돈(Seok Don Park) 대한피부과학회 2000 대한피부과학회지 Vol.38 No.2

A 40-year-old female patient, known angiocenteric T-cell lymphoma on nasal cavity, was transfered from the department of hemato-oncology for the evaluation of egg sized pinkish-yellow indurated mass with central necrotic tissue on the left medial elbow. Histopathologic findings revealed angiocentric, angioinvasive, and angiodestructive infiltrate containing atypical lymphocytes. The infiltrative cells were positivly stained with antibody to CD45RO, LCA, but not with antibody CD20. The atypical infiltrated perivascular lymphoid cells were positive to Epstein-Barr virus in situ polymerase chain reaction. She was treated with combined chemotherapy and radiation therapy, but she died due to sepsis. We herein report a rare case of angiocentric T-cell lymphoma on the nasal cavity and skin associated with Epstein-Barr virus. (Korean J Dermatol 2000;38(2):240~244)

사면 안정 분석을 위한 정면적법과 선조사법의 비교연구

정상원 ( Sang Won Cheong ),최병렬 ( Byoung Ryol Choi ) 대한지질공학회 2009 지질공학 Vol.19 No.2

사면의 안정성 분석과 관련하여 지질학적 특성과 지질공학적 특성을 각각 정면적법과 선조사법을 사용하여 선정된 세사면에 대하여 비교 분석하였다. 분석한 사면의 파괴유형의 결과와 실제 노두 사면에서 발생한 파괴양상과 비교하여 사면안정성 분석의 방법상 어떤 방법이 더 잘 적용될 수 있는 지 판단한다. 불연속면의 방향성, 확률밀도분포와 간격, 경사방향과 빈도수 및 연장성과 빈도수에 관하여 비교분석한 결과, 각 사면마다 대체로 서로 유사하게 분석되었다. 하지만 방향성 분석에서 사면 2에서는 서로 상이한 결과를 얻었으며, 이는 사면 2에 분포하는 절리군의 방향성은 절리의 길이와 빈도수에서 서로 다르며 선조사법을 이용하여 측정하였을 때 서로 다른 방향성을 보여주는 새로운 절리군의 출현을 의미한다. 절리의 확률밀도분포와 간격은 사면 3에서 높게 나타나며, 이는 사면 3을 구성하는 사질의 암석과 소습곡구조의 발달과 관련이 있는 것으로 사료된다. 선정된 세 사면의 안정성분석에서 정면적법과 선조사법의 비교 분석결과와 그리고 실제노두에서 발생한 사면파괴 양상과의 결과를 비교하였을 때 정면적법이 연구지역의 절취사면의 안정성 분석에서 더 세밀한 파괴유형을 예측할 수 있었으며 선조사법보다 더 유효한 방법으로 분석되었다. In relation to slope stability analysis, geologic characteristics and engineering properties of the discontinuities in three slopes selected are compared and analyzed by both square-inventory method and scanline survey. The aim of the study is in evaluating which method is applied better in slope stability analysis by comparing results of the two methods with those of direct observation on outcrop of slope failures generated. In each slope, results of comparative analysis among geologic and engineering properties are analyzed similarly one another. However, results of orientation analysis in slope 2 are different each other, which indicates orientation of joints in slope 2 depends on persistency and frequency of each joint and also indicates appearance of new joint set with different orientation. Probability density distribution and spacing in slope 3 are high in comparison to those in slope 2 and 3. The reasons are that distribution of psammitic rocks and development of minor folds in slope 3 unlike slope 2 and 3 are closely associated with development of joints. The research data indicate that the square-inventory method predicts more precise failure aspects and is more effective way than scanline survey in analyzing slope stability of the study area.

사회화 주관자가 초등학생의 운동생활에 미치는 영향

정상원(Sang Won Jung),정수진(Su Jin Jung) 한국사회체육학회 2004 한국사회체육학회지 Vol.0 No.22

The purpose of this study is to investigate the effect of interest in, participation in, exhortation to, and attitude toward the sports shown by the friends and teachers and the exhortation from the sports association and mass media focused on the parents, brothers and sisters who are the superintendents of the socialization which has a great effect on the children`s intelligent, affective, and behavioral development. To achieve this purpose, a survey using a questionnaire is carried out to the elementary school students on the fifth and the sixth grades in Kyeongsangnamdo, and the questionnaires collected from them were analyzed using the SPSS 12.0 for Windows. The results of this study by this purpose and method are like followings. At first, as a result of investigating the degree of participation in sports of the superintendents of socialization, it was indicated that the superintendent who has the highest interest in sports was man teacher, then male friend secondly and father in sequence. In the question of the degree of participation in sports, the man teachers was answered that they had the highest degree of participation in sports, then male friend secondly and brother in sequence. In the question of the degree of exhortation to sports, the fathers was answered that they had the highest degree of exhortation to sports, then the mothers secondly and the man teachers in sequence. In the question of attitude toward sports, the fathers were shown as they had the highest degree of attitude toward sports, then the mothers secondly and the man teachers in sequence. In the question of the degree of practice in life, they practiced and did various activities most through an institution both in and out of school. And it was indicated that the boy students practiced more than the girl students in all of the activities except the club activity out of school. Lastly, as a result of investigating the effect of the superintendents of socialization on the elementary school students` lives with practice, as they were man students or had a higher subjective social level, they practiced more in life both in and out of school. And as the father`s attitude toward sports was good, they practiced more in life in school. The mother`s participation in sports did not have any great effect on the elementary school students` lives with practice, but it was indicated that as the mother did not exhort to sports, the students did more club activities in school. In addition, as the brothers exhort to sports much, as the attitude toward sports was good, and as the sister`s attitude toward sports was good, they had a significant effect on the life with practice in school, but they didn`t have a significant effect on the life with practice out of school. Furthermore, it was indicated that as male friends participated in sports more, exhorted them to sports more, and had a good attitude toward sports, the students practiced more in school, and as the male friends exhorted to sports more, they practiced more out of school. It was appeared that as the female friends had a good attitude toward sports, they practiced more both in and out of school. As the man teacher exhorted the students to sports more and had a good attitude toward sports, and the woman teachers exhorted the students to sports more, the students practiced more in school. Both the man teacher and the woman teacher didn`t have any great effect on the life with practice out of school. Finally, it was appeared that as there is more exhortation from the sports associations and mass media, the students practiced more both in and out of school. As shown above in the survey, it can be indicated that the male friends` exhortation to sports, the female friends` attitude toward sports, and the exhortation from the sports associations and mass media have the greatest effect on the life with practice of the elementary school students.

시간지각 측면에서 본 치과병원 대기실의 실내환경특성 연구

정상원(Jeong, Sang-Won),조연주(Cho, Youn-Joo) 한국실내디자인학회 2017 한국실내디자인학회 학술대회논문집 Vol.2017 No.10

This study identified factors that affect time perception in the waiting room to identify factors to shorten subjective waiting time in dental clinics. And the application status of them is divided into spatial factor, empirical factor and information factor. In terms of spatial factors, the waiting room was about 16 to 32% of the total area, and it was located the farthest distance from the dental office. In the case of furniture, it is arranged in a clustered form, but since it is not provided with an independent space in general, it seems to be difficult to secure privacy. This behavior may be due to dental clinics using reservation systems. In terms of empirical factors, each dental clinic provided a characteristic service. Examples include televisions, magazines and books, DVDs for children, cosmetic corners, artwork, and cafe corners, which can enhance psychological stability. In terms of information elements, there were medical information booklets, treatment images, and medical panels. But there was no place to show the waiting sequence. The reason is that all dental clinics operate reservation systems. However, the reservation system can be delayed depending on the patient"s condition. Therefore, it is possible to shorten the waiting time for the customers by providing information on the waiting order through the monitor.

영한 및 한영 통계기반 기계번역에서의 이중언어 간 어순처리 및 단어정렬 최적화 방안 연구

정상원 ( Sang-won Chong ) 한국정보처리학회 2013 한국정보처리학회 학술대회논문집 Vol.20 No.1

통계기반 기계번역 시스템 (SBMT system)은 기계번역시스템 중에서 최근 활발히 연구되고 있는 분야이다. 통계기반 기계번역은 대용량의 말뭉치를 사용할 수 있어 특정 언어 쌍에 제한을 덜 받아 모델을 자동으로 학습할 수 있으며 다른 언어에 일반화하여 적용이 가능하다는 장점이 있다. 그러나 영어와 한국어 간 통계기반 기계번역에 있어서는 어순의 차이로 인한 문제를 해결할 필요성이 여전히 남아 있다. 이에 본 연구에서는 영어와 한국어 간 이중언어 말뭉치를 구축하고 통계기반 기계번역 훈련 시스템인 Moses 에 기반하여 구현한 베이스 시스템을 이용하여 이중언어 간 어순처리 및 단어정렬의 최적화 방안을 연구하였다.

한국 성인의 지단 단위(Finger-Tip Unit)와 신체 부위에 따른 임상적 응용

정상원(Sang Won Jeong),전재훈(Jae Hoon Chun),박재훈(Jae Hoon Park),차승훈(Seung Hoon Cha),박석돈(Seok Don Park) 대한피부과학회 2000 대한피부과학회지 Vol.38 No.12

Background:Dermatologic patients need advice on how much ointment or cream to apply, in particular topical corticosteroids. The instructions given to patients concerning topical therapy are frequently vague. Objective:The aims of this study are to make simple guidelines on the topical application of ointments or creams for patients, parents, doctors and nurses, and to check the accuracy of these guidelines in practice. Methods:The average height and weight according to the different age groups and sex were measured from Korean standard growth and developement chart. From this chart, their total body surface areas(BSA) were calculated using a standard nomogram. The length of the tips of their index fingers was measured; measuring from the distal skin-crease to the end of the finger. One finger-tip unit(FTU) was defined as the amount of ointment expressed from a tube nozzle with a 5 ㎜ in diameter, covering from the distal skin-crease to the tip of the palmar aspect of the index finger. The average area of abdominal skin covered by one finger-tip unit, and that of one palm were measured by computer scanner(Hurapack scanner, 4C) and image analyzed program(Image Pro. Plus V. 3.0, Micromedical). Each patient then placed his or her right hand lightly, palm side down with the fingers and thumb closed, onto Hurapack scanner 4C. A tracing of the outer edge of the hand was made from the ulnar to radial styloid by photoshop program. The outlined area and enclosed area were measured by an image analyzer. Results 1. The average length of each finger-tip was 2.48±0.2㎝ in males and 2.24±0.13㎝ in females. 2. The average weight of one FTU was 0.46±0.03g in males and 0.40±0.02g in females. 3. The average area of palm was 145±12.4㎠ in males and 115.9±10.1㎠ in females. 4. The average area of abdominal skin covered by one FTU was 278±34.4㎠; The average area was 303±24.3㎠ in males and 253±21.9㎠ in females. (Korean J Dermatol 2000;38(12):1624~1629) 5. The number of FTU of adult male required to treat various anatomical sites was : face and neck, 2.6; trunk and buttock, 10.5; arm and hand, 5; leg and foot, 10. The number of FTU of adult female was : face and neck, 2.8; trunk and buttock, 11; arm and hand, 5.5; leg and foot 11. 6. The number of FTU of children required to treat each anatomical site was variable because of differential growth according to different age. Conclusion:The concept of FTU provides convenient means of rapidly assessing the approximate amount of ointment or cream required for the treatment of patients.