[당선작] 지식재산교육센터

김양성(Kim, Yang-sung) 현대건축사 2003 월간 CONCEPT Vol.- No.57

자동차용 이종두께 점용접물의 압흔 깊이와 인장-전단강도 특성

김회현(Hoi-Hyun Kim),박정훈,Seung-Su Kim,백승세(Seung-Se Baek),권일현(Il-Hyun Kwon),양성모(Seong-Mo Yang),유효선(Hyo-Sun Yu) 대한기계학회 2004 대한기계학회 춘추학술대회 Vol.2004 No.10

This research is to investigate welding characteristics based on the tensile shear strength with various welding conditions on the 3-lap spot welded joint. The indentation depth are used to propose the optimum welding conditions. The tensile-shear strength has affected by the welding current and the welding time for 3-lap spot welded joint constructed by a high strength steel sheet and galvanized steel sheet. Meanwhile it was found that the indentation depth has a relatively close relationship with the expulsion occurrence. The optimum welding conditions are proposed for the 3-lap spot weldment.

만성 골수성 백혈병 환자의 생존율 및 예후 인자 - 만성기 Ph1 환자의 분석 -

양성현(Sung Hyun Yang),서철원(Cheol Won Suh),방영주(Yung Ju Bang),박선양(Seon Yang Park),김병국(Byoung Kook Kim),김노경(Noe Kyeong Kim),이문호(Mun Ho Lee),김승택(Seung Taik Kim),이홍복(Hong Bock Lee) 대한내과학회 1988 대한내과학회지 Vol.35 No.4

N/A The prognostic significance of different clinical and laboratory findings at the time of diagnosis was anal- yzed among 136 patients with chronic myelogenous leukemia (CML). These patients were collected in the department of internal medicine of Seoul National University Hospital from January 1977 to December 1986. The incidence was not different between both sexes and peak incidence was third decade. The median survival time of all patients from diagnosis was 34.7 months. The cytogenetic study was performed in 110 patients of which 17% were Ph1-negative. These poor prognosis group, showing a shorter survival (14.4 months) than Ph1-positive ones (35.3 months), displayed lower platelet and white blood cell counts and lower percentage of myeloblast in peripheral blood. The prognostic analysis was restricted to the relatively good prognosis group, 85 Ph1-positive patients in chronic phase. From the univariate analysis, patient characteristics associated with shortened survival were age over 50 years old and peripheral basophils over 10%. These two factors were not interrelated. When patients were segregated according to the prognostic factors, it was possible to identify a low-risk group with median survival of 4S months, and a high-risk group with median survival of 1B months.

자동차용 강판의 4겹 다층 점용접물의 용접특성 평가

김회현(Hoi-Hyun Kim),김성수(Seong-Su Kim),백승세(Seung-Se Baek),권일현(Il-Hyun Kwon),양성모(Seong-Mo Yang),유효선(Hyo-Sun Yu) 대한기계학회 2004 대한기계학회 춘추학술대회 Vol.2004 No.11

This research is conducted to investigate weldability characteristics with various welding conditions on the 4 lap spot welded joint of structural steel sheets in automobile. The relationship between the tensile-shear strength and the indentation depth has been investigated to evaluate the weldability and the optimum welding conditions. The welding current and the welding time have a greatly affect to the tensile-shear strength compared to the electrode force. It was found that the indentation depth has a relatively close relationship with the expulsion occurrence. The optimum welding conditions were proposed for the 4 lap spot welded joint.

중간축을 고려한 기어구동장치의 신뢰수명 평가

김하수(Ha Su Kim),김동우(Dong Woo Kim),양성모(Sung Mo Yang) 한국공작기계학회 2000 한국공작기계학회지 Vol.9 No.4

심부정맥혈전증의 병인 분석

이제환 ( Lee Je Hwan ),박선양 ( Park Seon Yang ),계경채 ( Gye Gyeong Chae ),정철원 ( Jeong Cheol Won ),신현춘 ( Sin Hyeon Chun ),이진학 ( Lee Jin Hag ),양성현 ( Yang Seong Hyeon ),김병국 ( Kim Byeong Gug ),김노경 ( Kim No Gyeon 대한내과학회 1993 대한내과학회지 Vol.44 No.3

연구배경 : 심부정맥혈전증은 체내 지혈혈전계의 불균형에 의해 발생하며 최근 혈전증 연구의 발달로 심부정맥혈전증의 여러 가지 선행 인자들이 알려져 있다. 국내에서도 상당수의 심부정맥혈전증이 발생하고 있으나 그임상상 및 발생요인 등의 병인론에 관해서는 잘 알려져 있지 않다. 이에 저자들은 서울대학교병원 내과에서 심부정맥혈전증(종양색전은 제외)으로 진단받은 85예의 환자를 대상으로 임상적 선행 인자를 조사하였으며 동시에 혈액응고학적 선행 인자에 대한 검사를 실시하였다. 방법 : 혈전증의 임상상 및 혈전증의 임상적 선행 인자를 알기 위하여 대상 환자들의 병록지와 심부정맥혈전증의 진단시 시행된 방사선학적 검사를 검토하였으며, 혈전증을 유발할 수 있는 혈액응고학적 선행인자의 분석을 위하여는 항 cardiolipin 항체, C 단백, S 단백, antithtombin Ⅲ, tissue-type plasminogen activator 및 plasminogen activator inhibitor type 1, 혈장 섬유소 용해능을 검사하였다. 결과 : 1) 대상 환자 85예중 남자 40예, 여자 45예로 남녀비는 1 : 1.13 이었고, 나이는 15세에서 77세로 중앙치는 47세였다. 대상 환자의 연령별 분포는 40대가 21예 (24.7%)로 가장 많았고, 50대가 19예(22.4%), 30대가 16예 (18.8%), 20대가 10예(11.7%), 60대가 9예 (10.6%), 70세 이상이 6예(7.1%)였고, 20세 미만도 4예 (4.7%) 있었다. 2) 심부정맥 혈전증의 발생 부위로는 장단지(calf)의 정맥에 국한된 경우가 7예(8.2%), 근위부쪽으로 슬와정맥(popliteal vein)까지 관여된 경우가 7예(8.2%), 장골 정맥(femoral vein)까지 관여된 경우가 12예 (14.1%), 대퇴 정맥(iliac vein)까지 관여된 경우가 37예(43.5%)로 하지가 전체 대상 환자의 74.1%인 63예였으며, 하대 정맥과 신 정맥이 관여된 경우가 8예(9.4%), 문 맥(portal vein)이 관여된 경우가 8예(9.4%)로 복강내 정맥 혈전증이 16예(18.8%) 있었다. 그외 상지의 정맥이 관여된 경우가 4예(4.7%), 상대 정맥 혈전증이 1예(1.2%)있었으며, 심부정맥혈전증의 증거가 없는 폐동맥 색전증이 1예(1.2%)있었다. 전체 대상 환자중 29예(34.1%)에서 폐동맥 색전증이 합병하였다. 3) 심부정맥혈전증의 임상적 선행 인자로는 고령(60세 이상)이 15예(17.0%), 악성종양 13예(15.3%), 혈전증의 과거력이 있는 경우가 11예(12.9%), 수술후 상태가 9예(10.6%), immobilization이 7예(8.2%), 고지질혈증 5예(5.9%), 비만증 4예(4.7%), 혈류의 정체 4예(4.7%), 신증후군 3예(3.5%), 당뇨병 3예(3.5%), Behcet씨 병 2예(2.4%), 여성호르몬제 복용 2예(2.4%) 등이었으며, 특별한 임상적 위험인자가 발견되지 않은 경우가 25예(29.4%)였다. 4) 심부정맥혈전증의 혈액응고학적 선행 인자로는 항 cardiolipin 항체가 양성인 경우, C 단백의 기능적 활성도나 유리형 S 단백의 항원량이 정상의 60% 미만인 경우, antithrombin Ⅲ의 기능적 활성도가 정상의 70%미만인 경우, t-PA값이 정상치보다 낮거나 PAI-1 값이 정상치보다 높은 경우, 그리고 섬유소 용해능이 정상치 보다 낮은 경우 등을 생각하였는데, 항 cardiolipin 항체양성이 7예(19.4%), C 단백의 기능적 활성도가 정상의 60% 미만인 경우가 3예(16.7%), S단백(free form)의 항원량이 정상의 60% 미만인 경우가 3예(10.7%), antithtombin Ⅲ의 기능적 활성도가 정상의 70% 미만인 경우가 2예(5.9%), t-PA가 정상치보다 낮은 경우가 5예(22.7%), PAI-1이 정상치보다 높은 경우가 10예(29.4%), 섬유소 용해능 검사가 정상치보다 낮게 나온 경우가 14예(42.4%) 있었다. 결론 : 한국인에서의 심부정맥혈전증의 중요한 임상적 선행원인으로는 고령, 악성종양, 혈전증의 과거력, 수술후 상태, 기동장애였고, 혈전증과 관련된 혈액응고학적 검사의 이상소견으로는 PAI-1의 증가와 t-PA의 감소, 항 cardiolipin 항체 양성이 흔히 관찰되었다. Background : The formation of deep vein thrombosis reflects a balance between the effects of thrombogenic stimuli and a series of protective mechanisms. Substantial progress has been made in the last several decades in identifying hereditary and acquired risk factors predisposing to deep vein trombosis. Even so, a large number of patients still have no identifiable underlying cause for recurrent venous thrombosis. Elucidation of specific predisposing factor (s) is required for proper management of thrombosis. For the Korean patients, these factors have not been well characterized. Methods : We analyzed clinical profiles of the patients with venous thromboembolism and investigated the laboratory abnormalities known to be associated with increased risk of thrombosis. Results : 1) The male-female ratio was 1 : 1. 13 and age distribution showed 24.7% in fifth decade, 22.4% in sixth, 18.8% in fourth, 11.7% in third, 10.6% in seventh, 7.1% over 70 years old, and 4.7% under 20 years. 2) The thromboses were most commonly located in lower extremities (74.1%), and intraabdominal thromboses were 16 cases (18.8%), thromboses of upper extremities 4 cases (4.7%), superior vena cave thrombosis 1 case (1.2%) and pulmonary embolism without evidence of deep vein thrombosis 1 case (1.2%). Thirty-four percent of the cases were diagnosed as having pulmonary embolism. 3) The clinical risk factors for venous thromboembolism were old age(17.0%), malignancy (15.3%), prior history of venous thromboembolism (12.9%), postoperative state (10.6%), immobilization (8.2%), hyperlipidemia (5.9%), systemic lupus erythemato년 (4.7%), obesity (4.7%), stasis (4.7%), nephrotic syndrome (3.5%), diabetes mellitus (3.5%), Behcet`s disease (2.4%), estrogen (2.4%). Twenty-nine percent of the cases had no indentifiable clinical risk factors. 4) The laboratory abnormalities associated with venous thromboembolism were increase of anticardiolipin antibody (19.4%), decrese of protein C activity (16.7%), decrease of protein S (free form) antigenicity (10.7%), decrease of antithrombin Ⅲ activity (5.9%), decrease of tissue-type plasminogen activator (t-PA) (22.7%), increase of plasminogen activator inhibitor type 1 (PAI-1) (29.4%) and decrease of fibrinolytic activity (42.4%). Conclusion : Clinical and laboratory risk factors have been determined in 85 patients with deep vein thrombosis and/or pulmonary embolism in Korea. Major clinical risk factors for venous thromboembolism included old age, malignancy, prior history, postoperative state and immobilization. Among the laboratory abnormalities associated with venous thromboembolism, increase of PAI-1 and/of decrease of t-PA, and increase of anticardiolipin antibody were most frequently observed.

[소개] 전북대학교 공과대학 국책지원사업 소개 (자동차 신기술 분야)

양성모(S. M. Yang),윤정모(J. M. Yoon),이성철(S. C. Lee),김종교(C. K. Kim) 한국자동차공학회 1995 오토저널 Vol.17 No.4

아동 그림책에 나타난 젠더정체성 형성에 대한 분석

김세라(Kim, Sera),양성은(Yang, Sungeun) 한국생활과학회 2021 한국생활과학회 학술대회 Vol.2021 No.5

준정적 인장-전단시험에 의한 점용접부에서 S-N곡선의 연구

김홍진(Hongin Kim),송준혁(Joonhyuck Song),유효선(Hyosun Yu),강희용(Heeyong Kang),양성모(Sungmo Yang) 한국자동차공학회 2003 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-

Evaluation of fatigue strength on the spot welded part is very important for strength design of spot welded steel structures. This paper presents a method for determining the fatigue life of SPC spot weldment used extensively in vehicle.<br/> We shell consider the problem of the life prediction of uniaxial tensile specimen on the basis of the kinetic concept of the mechanism of failure of molecular structure. The binding energy is determined by the probability of rupture for a given strength. It is the minimum energy to separate I mole of any molecular compound from its stable lattice. That is, the failure energy is equal to the binding energy of atoms with in the metals lattice. From this concept, we proposed the method to predicting the fatigue life and the S-N curve of material.<br/> To examine the validity of the proposed fatigue life equation and S-N curve, the fatigue life is estimated using the lethargy coefficient as the total defect estimation coefficient from the tensile-shear test. Then this result of calculation was compared to the result of fatigue test. This method can save the time and the cost in processing of predicting the life cycle of a structure.<br/>

가정어린이집 보육교사들의 권리실제에 관한 질적 연구

김기화(Gihwa Kim),양성은(Sungeun Yang) 한국아동학회 2017 아동학회지 Vol.38 No.1

Objective: The present study examined how childcare teachers at home daycare centers perceive their rights as teachers and what kind of rights situations pertain to them at their respective daycare centers. Methods: Adopting a qualitative research method approach, this study conducted focus group interviews to collect empirical data. The participants were childcare teachers and directors at home daycare centers, which were shown to have relatively poor work environments compared to other types of daycare centers Results: The findings revealed that the participants at home daycare centers perceived their rights as childcare teachers to be extremely vulnerable. It was shown that their rights could not be protected in various frameworks involving mutual relations between teachers and directors, the Infant Care Act and childcare policy, and social perceptions that fail to recognize them as professionals. Conclusion: The fingdings from the present study contribute to our understanding of the rights situation faced by childcare teachers at home daycare centers and to the social discourse on finding ways to realize the teachers’ full rights as childcare professionals.