Catenary 곡면을 갖는 막구조물의 치환기법에 관한 연구

임채욱,송평훈,김승덕,송호산 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.2(구조계)

Membrane structure systems and cable net structure systems are attracting people's attention as they are used in many buildings because of their light materials and airy appearances. If a membrane structure system or a cable net structure system does not have sufficiently high initial stiffness, it may be in unstable state. But if the initial stiffness is secured, the system will be in stable state. In this study the nonlinear finite element formulae for membrane and cable members considering geometric nonlinearity is derived, and then a catenary's membrane structure, and a tension membrane structure by Nass(Nonlinear Analysis for Spatial Structures) program is analyzed. The suitable scheme, which membrane structure are assigned by cable elements for overcoming the unfitted shape problem, is shown that the section of cable is assigned by element's area.

혈액 투석 환자에서 중심정맥 협착에 대한 스텐트 삽입술 : Wallstent Placement

임대승,노상필,이유선,정승현,김보영,이정우,강정아,김정희,이민수,정준용,최시완,정진옥,성인환,이강욱,신영태 충남대학교 의과대학 의학연구소 2002 충남의대잡지 Vol.29 No.1

Stenosis of central vein is a common complication arising after percutaneous subclavian vein catheter insertion performed for temporary vascular access in chronic renal failure patients undergoing hemodialysis. There are several treatment methods for the condition like percutaneous angioplasty(PTA), stent insertion, and surgery, but recent trend is toward PTA and stents. Among the patients diagnosed with chronic renal failure from March 1993 to May 2002 and undergoing hemodialysis through AV fistula, the 14 Patients in whom central vein stenosis arose were selected for the study. A total of 28 percutaneous interventions(5 PTA and 23 stent placement) were performed, and restenosis rate and the time taken till the restenosis in de novo lesions and instant lesions were compared. All 28 cases were operated successfully. The 14 cases that received both anigioplasty and stent placement initially. (de novo lesion : 14 cases), Among the 10 cases with de novo lesion that followed up more than 1 year, 3 cases are currently undergoing hemodialysis without restenosis, and the remaining 7 cases have recurred stenosis with the mean time to restenosis of 10.9 months. In the 7 cases in whom stenosis recurred, 11 interventions were done(instent lesion: 11 cases). 4 of these were using only ballon angioplasty with 100% restenosis rate and the mean time of 3 months until restenosis. The remaining 7 cases were using both balloon angioplasty and stent placement, also with 100% restenosis rate but with the mean time of 12 months until restenosis, which was later than the group receiving only balloon angioplasty. In treating the patients with central vein stenosis, stent placement seems to be more advantageous over PTA in terms of restenosis rate and the mean duration of patency. In the case of instent lesion, inserting the stent for the second time after stenosis recurred lengthened the duration of patency compared to performing balloon angioplasty alone.

Strut-and-Tie Model을 利用한 鐵筋콘크리트 部材의 剪斷解析

林承旭,朴弘用 명지대학교 공학기술연구소 1992 공학기술연구소 논문집 Vol.7 No.-

Recently, Strut-and-Tie Model(STM) is proposed as a rational and consistent basis for analysis and design of any part of cracked reinforced and prestressed concrete structures which include so called disturbed or discontinuity regions, subject to bending, shear and torsion. In this paper, first, theoritical backgrounds of STM as well as modelling and analyzing methods are introduced. Then, the funtion of STM is confirmed by applying STM to some examples of other reseacher's experiments on reinforced concrete deep beams and comparing with test results and ACI Code provisions.

한국형 손기능 작업표본검사의 신뢰도 및 타당도

임승건,최재욱,장기연,김지연 한국장애인고용공단 고용개발원 2012 장애와 고용 Vol.22 No.2

The purpose of this study is to secure the stability of the Korea hand function work sample test by conducting verification of reliability & validity. In order to verify reliability⋅validity of developed Korea hand function work sample test, the test based on 206 people with disabilities was conducted. The each existing Purdue Pegboard and developed Korea hand function work sample test were conducted randomly, and the test-retest method was conducted by same examiner repeatedly in order to measure reliability of Korea hand function work sample test. The criterion validity were verified, and sensitivity․specificity were shown by written ROC curves. The criterion validity was verified by comparison with Purdue Pegboard which is used as existing useful tool. First, all correlations of Korea hand function work sample test in the test-retest reliability are significant from 0.01 level and it shows very high correlations of more than 0.95 between the tests. Second, the Korea hand function work sample test shows high correlation between the existing Purdue Pegboard and test. Third, the predictive power of the AUC value was appeared high with 0.886, 0.868 in the results of the Korea hand function work sample test by using ROC curves. Fourth, Korea hand function work sample test was developed as useful tools with high convenience degree & failure prediction comparing to Purdue Pegboard. The Korea hand function work sample test is significant for the first developed work sample test tool in Korea which secured reliability and validity and it is expected to help for practical service provision of vocational evaluator for the disabled. 본 연구의 목적은 국내에서 개발된 한국형 손기능 작업표본검사의 신뢰도 및 타당도 검증을 실시하여 장애인의 손기능을 평가하고, 직업능력을 예측하는데 활용할 수 있도록 검사의 안정성을 확보하는 것이다. 한국형 손기능 작업표본검사의 신뢰도⋅타당도 검증을 위해 15세-55세의 비장애인 56명, 장애인 206명(지체장애인, 지적장애인, 정신장애인, 뇌병변장애인)을 대상으로 하였다. 본 연구에서 수집된 자료는 SPSS WINDOW 13.0을 사용하여 통계처리 하였다. 검사-재검사 신뢰도를 위해서 반복측정 상관분석을 하였고, 민감도․특이도는 medcalc 프로그램 version 11.4.1을 사용하였고 ROC curves를 작성하여 한국형 손기능 작업표본검사와 퍼듀펙보드의 장애 예측 정도를 나타내었다. 준거 타당도 검증을 위해 기존의 도구와 paird t-test 및 카이제곱(chi-square) 검정을 실시하여 분석하였다. 분석결과 첫째, 한국형 손기능 작업표본검사는 검사-재검사 신뢰도에서 모든 상관이 0.01 수준에서 유의미하고 검사 간 상관이 0.95이상의 매우 높은 상관을 보이는 것으로 나타났다. 둘째, 한국형 손기능 작업표본검사가 기존의 퍼듀펙보드와 검사 간 상관이 높은 것으로 나타났다. 셋째, 한국형 손기능 작업표본검사는 장애 예측 민감도와 특이도를 ROC curves를 사용해서 나타낸 결과 AUC 값이 0.886, 0.868로 예측력이 높은 것으로 나타났다. 본 연구를 통해 국내에서 개발된 한국형 손기능 작업표본검사는 신뢰도와 타당도가 확보된 작업표본검사 도구라는 점에서 의미가 있고 장애인 직업능력평가의 실질적인 서비스 제공에 도움이 될 것으로 기대된다.

안와골절의 외과적 접근에 대한 증례보고

민승기,이은택,오승환,이동근,고세욱,송종민,최성림 대한악안면성형재건외과학회 2002 Maxillofacial Plastic Reconstructive Surgery Vol.24 No.3

The Orbital fracture which is often combined with midface fracture can cause decreased visual acuity, limitation of eyeball movement, diplopia, enophthalmos, etc. Traumatic orbital fracture causes change of orbital volume, results in diplopia and enophthalmos thus, accurate repositioning of displaced bone and reconstruction of orbital defect with autogenous materials(cranial, rib, iliac bone, cartilage and fascia lata) or alloplastic materials(gelatin film, polyglactin mesh, methylmethacrylate, Teflon, silicone, Supermid, hydroxyapatite and metal). The key point of reconstruction of orbit is accurate repositioning of displaced orbital floor, lateral, medial orbital wall and sufficient bonegraft in anatomical defect. As this cases, we obtained good results through transconjunctival and coronal approach who were required orbital reconstruction. Also, we accurately diagnosed orbital fracture with C.T., 3D model and good result for orbital reconstruction with sufficient parietal block bone graft during average 16.8 months follow-up.

정신분열병에 대한 리스페리돈의 효과 및 안정성

이민수,김용구,김영훈,연병길,오병훈,윤도준,윤진상,이철,정희연,강병조,김광수,김동언,김명정,김상훈,김희철,나철,노승호,민경준,박기창,박두병,백기청,백인호,손봉기,손진욱,양병환,양창국,우행원,이정호,이종범,이홍식,임기영,전태연,정영조,정영철,정인과,정인원,지익성,채정호,한상익,한선호,한진희,서광윤 大韓神經精神醫學會 1998 신경정신의학 Vol.37 No.1

연구목적 : 본 시험의 목적은 임상시험 시작전에 연구자들을 대상으로 PANSS Workshop을 통하여 PANSS, ESRS에 대한 국내에서의 표준화 작업을 구축하고 새로운 정신병 치료제인 리스페리돈의 효과와 안정성을 재확인하여 리스페리돈 사용에 대한 적정화를 이루는데 있다. 연구방법 : 1996년 4월부터 1996년 9월까지 국내 39개 대학병원 정신과에 입원중인 혹은 증상이 악화되어 입원하는 정신분열병 환자 377명을 대상으로 다시설 개방 연구를 시행하였다. 1주일간의 약물 배설기간을 가진후, 리스페리돈을 8주간 투여하였고, 기준점, 1주, 2주, 4주, 그리고 8주후에 평가되었다. 용량은 제1일에는 리스페리돈 1mg씩 1일 2회, 제2일에는 2mg씩 1일 2회, 제3∼7일에는 3mg씩 1일 2회 투여하였다. 이후 환자의 임상상태에 따라 임의로 증량할 수 있으며, 최대 일일 16mg을 초과하지 않도록 하였다. 추체외로 증상을 조절하기 위한 투약을 허용하였다. 임상증상 및 부작용의 평가는 PANSS(Positive and Negative Syndrome Scale), CGI(Clinical Global Impression) 그리고 ESRS(Extrapyramidal Symptom Rating Scale)을 사용하였다. 연구결과 : 377명중 343명(91%)이 8주간의 연구를 완결하였다. 치료 종결시점인 8주후 PANSS 총점수가 20% 이상 호전된 경우를 약물 반응군으로 정의할때, 약물반응군은 81.3%였다. 리스페리돈에 반응하는 예측인자로는 발병연령, 이전의 입원 횟수, 유병기간이 관련 있었다. 리스페리돈은 1주후부터 PANSS양성, 음성, 및 일반정신병리 점수상에 유의한 호전을 보여 효과가 빨랐다. CGI의 경우도 기준점에 비해 1주후부터 유의한 감소를 나타내었다. ESRS의 경우, 파킨슨 평가점수는 기준점과 비교해 투여 1주, 2주, 4주후 유의하게 증가되었다가 8주후 기준점과 차이가 없었다. Dystonia 평가점수는 1주후만 유의한 증가를 보였으며, dyskinesia 평가점수는 유의한 차이가 없었다. 혈압, 맥박수의 생명징후 및 일반 혈액학 검사, 생화학적 검사, 심전도 검사에서 유의한 변화는 없었다. 결 론 : 이상의 다시설 개방 임상 연구를 통해 리스페리돈은 정신분열병 환자에서 양성증상뿐만 아니라 음성증상 및 전반적인 증상에도 효과적인 것으로 사료된다. 보다 명확한 평가를 위해서는 다른 항정신병약물과의 이중맹검 연구가 필요할 것으로 생각되며, 또한 장기적 치료에 대한 평가도 함께 이루어져야 하겠다. Objective : The purpose of this study was to investigate the efficacy and safety of risperidone in the treatment of Korean schizophrenic patients. Method : This multicenter open study included 377 schizophrenic patients drawn from 39 university hospitals. After a wash-out period of 1 week, the schizophrenic patients were treated with risperidone for 8 weeks and evaluated at 5 points ; at baseline, and 1, 2, 4 and 8 weeks of treatment. The dose was increased from 2mg/day(1mg twice daily) to 6mg/day(3mg twice daily) during the first week and adjusted to a maximum of 16mg/day over the next 7 weeks according to the patient's clinical response. Medication to control extrapyramidal symptoms was permitted. The psychiatric and neurological status of the patients was assessed by PANSS, CGI, and ESRS scales. Results : 343(91%) of 377 patients completed the 8-week trial period. Clinical improvement, as defined by a 20% or more reduction in total PANSS score at end point, was shown by 81.3% of patients. The predictors of response to risperidone were associated older age, shorter duration of illness, fewer previous hospitalization. Risperidone had rapid onset of action ; a significant decrease of the total PANSS and three PANSS factor(positive, negative, general), and CGI was already noticed at the end of first week. For the ESRS, parkinsonism rating scores were significantly increased until week 4 comparing with baseline. Dystonia rating scores were significantly increased until week 1, and dyskinesia rating scores were not significantly changed during the study. Laboratory parameters including vital sign, EKG, hematological, and biochemical values showed no significant changes during the trial. Conclusions : This study suggests that risperidone is generally safe and effective against both the positive and negative symptoms in our group of patients.

Impact of Self Management Behavior and Sportsmanship of Ssireum Athletes on Organizational Effectiveness and Performance

( Seung Jin Cha ),( Seung Wook Song ),( Myung Mi Kim ),( Seung Hyun Lim ) 한국체육학회 2016 국제스포츠과학 학술대회 Vol.2016 No.1

Purpose: This study investigates the cause-effect relationship of the impact of self management behavior and sportsmanship of ssireum athletes on organizational effectiveness and performance. The purpose of this study is to provide basic data to improve the coaching abilities of ssireum instructors and to improver performance of ssireum athletes. Method: Using 475 valid specimens comprised of ssireum athletes in semi-professional and college teams, the Window SPSS Ver. 20.0 statistics program was utilized and the following conclusions were acquired using the frequency analysis, descriptive analysis, factor analysis, t-test and one-way ANOVA, and multiple regression analysis. Result: Self management behavior, sportsmanship, organizational effectiveness, and performance perceived by ssireum athletes showed that semi-professionals were better than college athletes, 4-6 years of experience was lowest and 10 years or more experience was highest, it was lowest for athletes with training time of five hours or less, athletes who had been awarded showed higher self management behavior than athletes who never won awards, athletes who had no experience in group awards and individual awards was lowest, and those who were five times or more were highest, for effort level athletes with most efforts were low and average athletes were highest, and athletes who train individually demonstrated better self management behaviors than athletes who did not train on their own. Conclusion: First, self management behavior (willpower control, life management, unique behavior management, interpersonal relationship management, body management) had positive correlation with sportsmanship (respecting and considerate of others, concentration in best performance, respect of rulings, teamwork), organizational effectiveness (organizational concentration and satisfaction), and performance (performance). Second, it was found that organizational concentration of the ssireum athletes`` organizational effectiveness had positive impact on life management, unique behavior management, training management, interpersonal relationship management, and body management. Organizational satisfaction was found to have positive impact on willpower control and performance had positive impact on training management, interpersonal relationship management, and body management. Third, organizational concentration of ssireum athletes`` organizational effectiveness was found to have a positive impact on respect and consideration of others, concentration of best performance, and teamwork among sportsmanship. It was found that organizational satisfaction had a positive impact on teamwork and performance had positive impact on concentration of best performance and teamwork.

생활체육 배구동호인들의 상해발생 및 예방에 관한 연구

임승현(Lim Seung-Hyun),고성경(Ko Seong-Kyeong),이종삼(Lee Jong-Sam),전중기(Jun Jung-Gi),이승욱(Lee Seung-Wook) 대구대학교 인문과학연구소 2010 人文科學硏究 Vol.34 No.-

The purpose of this study was provide the effective way of prevention injury and ultimately earlier return to the competition. It was analyzed the frequency and area of injury occurrence during competition period throughout the whole year. The causes and the time of the injury occurrence, and the way of treatment and prevention were examined from total 310 adults recreational volleyball players. Regardless of gender and position differences, it was shown that the highest injury occurrence time was the winter season and Sunday. The major causes of injuries were included that the lack of warm up exercise and the foul committed by the other team's player. As far as the movement is concerned, most if the injuries were occurred during blocking for men's games and receiving for women's game. The injury region of the body was lower extremities, ankle, arm and wrist, and waist by orderly. When the types of the injury were considered, muscle and ligament sprain and tendinitis, joint and bone problems were the major occurred was using airspray types of cataplasm. The education for the preventing of the injury prevention is tendency of increasing, and all players participating for the recreational volleyball games are being endeavored for increase their warm up time before initiate the main games.

저온생육이 우수한 청치마 상추 ‘스노우그린’ 육성

임성희(Seung Hee Lim),이영순(Young Soon Lee),서명훈(Myeong Whoon Seo),전명희(Myoung Hee Jeon),정윤경(Yun Kyung Jung),김성기(Sung Kee Kim),임재욱(Jae Wook Lim),신은정(Eun Jung Sin) 한국원예학회 2013 한국원예학회 학술발표요지 Vol.2013 No.5

Risk of Stroke in Elderly Dialysis Patients

Han, Seung Seok,Ryu, Dong-Ryeol,Joo, Kwon Wook,Lim, Chun Soo,Kim, Yong-Lim,Kang, Shin-Wook,Kim, Yon Su,Kim, Dong Ki The Korean Academy of Medical Sciences 2017 JOURNAL OF KOREAN MEDICAL SCIENCE Vol.32 No.9

<P>Despite the current knowledge about the risk of stroke and its related factors in general population, this issue in elderly patients receiving dialysis remains unresolved. Firstly, to compare the risk of stroke between hemodialysis (HD) and peritoneal dialysis (PD), data on 13,065 incident dialysis patients (aged ≥ 65 years; 10,675 in HD and 2,390 in PD) were retrieved from the Korean Health Insurance dataset. Secondly, to identify the risk factors of stroke amongst various clinical and laboratory parameters in HD, 980 elderly patients were retrospectively analyzed using an independent prospective cohort from 31 dialysis centers. For a mean duration of 1.8 years (maximum of 5 years), the risk of all cardiovascular diseases (ischemic heart disease and stroke) did not differ between HD and PD. However, when analyses were conducted separately by subtype, the risk of stroke, not ischemic heart disease, was significantly higher in HD patients than in PD patients. When the risk factors of stroke were probed after HD for a mean duration of 2.6 years (maximum of 7 years), the absolute dependence on social support, a previous history of cardiovascular disease, high levels of low-density lipoprotein cholesterol, and the use of a high number of anti-hypertensive drugs were identified as being significant. Based on the discrepancy of stroke risk between modalities and the HD-tailored risk factors of stroke, the monitoring and management of these factors may be a key strategy to reduce the risk of stroke in elderly patients receiving dialysis.</P>