도로판형교의 Life-Cycle Cost 최적설계

조효남,민대홍,조준석 漢陽大學校 工學技術硏究所 2000 工學技術論文集 Vol.9 No.1

본 연구에서는 강판형교에 대하여 총기대비용을 최소화하는 최적설계모델을 제안하였다. 총기대비용은 전체 공용기간을 고려하여 초기비용(설계비용, 개통전 검증재하시험비용, 건설비용), 유지보수비용 및 기대파괴비용을 포함하고 있다. 설계변수들에 대해 총기대비용을 최소화하는 문제로 정식화하였고, 거동제약조건은 휨파괴와 전단파괴의 형태로 되어 있다. 이러한 총기대비용 최적설계를 수행함으로써 효율적이고 합리적인 비용산정을 통해 총기대비용 설계의 근거를 제시하고 구조물 총기대비용에 관한 민감도 분석을 하였다. 수치해석을 통해 본 연구에서 제안된 총기대비용에 근거한 강판형교의 최적설계가 기존 초기비용 설계에 비해 훨씬 합리적이고 경제적인 설계가 될 것이며 향후 구조물 설계에서 추구해 나가야 할 차세대 성능기준 설계와 매우 밀접한 설계법임을 알 수 있다. This paper presents an optimum design model for minimizing the life-cycle cost (LCC) of steel plate girder bridges. The point is that it takes into account service life process as a whole, and thus the life-cycle costs include initial (design, testing, and construction) costs, maintenance costs and expected failure costs. The problem is formulated as that of minimization of expected total life-cycle cost with respect to the design variables. The performance constraints are considered in the form of flexural failure and shear failure. By processing the optimum LCC design the effective and rational basis is proposed for calculating the total LCC and the sensitivity analysis of LCC is performed. Based on a numerical example, it may be positively stated that the optimum LCC design of steel plate girder bridges proposed in this study provides a lot more rational and economical design, and thus the proposed approach will expedite the development of new concepts and design methodologies that may have important implications in the next generation performance-based design codes and standards.

Escherichia coli 패혈증 환자에 합병된 대칭적 하지 말단 괴사증 1예

남해성,유진홍,권순석,민준기,조현선,박민경,심병주,남유정,이지인,김진수,길욱현,조근종,신완식 대한감염학회 2005 감염과 화학요법 Vol.37 No.6

We have encountered a rare case of symmetrical peripheral gangrene complicating Escherichia coli sepsis in a 47-years-old male. He was successfully treated with antibiotics, anticoagulants, and vasodilator. To our knowledge, this is the first report on symmetrical peripheral gangrene complicating E. coli sepsis in Korea.

정신보건관련시설 입원(소)자의 주요 정신장애 유병률 : 전국 20개 시설의 입원(소)자를 대상으로

조성진,조맹제,서동우,함봉진,홍진표,배재남,이준영,이동우,박종익,전홍진,김성주,김용익 大韓神經精神醫學會 2004 신경정신의학 Vol.43 No.6

Objectives : One of the objectives of this study is to estimate the prevalence rates of psychiatric diagnoses in the combined populations of psychiatric hospitals, psychiatric nursing facilities and homeless asylums using the Korean version of the Composite International Diagnostic Interview (K-CIDI), which is a comprehensive and fully standardized interview schedule to assess psychiatric disorders for diagnosis. The Other objective is to compare with previously studied prevalence rates of Psy-chiatric diagnoses using the results of this study. Methods : The study subjects, aged from 181o 64 years, were randomly selected from 64,582 institutionalized population of psychiatric hospitals, Psychiatric nursing facilities and homeless asylums as of 30, June, 2001. Twelve trained interviewers administered the K-CIDI to the selected respondents. A total of 1,875 respondents (male 1,194, female 681) completed the interview. Results : The lifetime and one year prevalences of any diagnosis excluding nicotine dependence · withdrawal, anxiety disorder, eating disorder, somatoform disorder were 88.2% (male 88.1%, female 88.3%), and 65.8% (male 62.7%, female 73.7%), respectively. The lifetime and one year prevalences of schizophrenia and other psychotic disorders were 78.5% (male 75.3%, female 83.7%), and 56.8% (male 51.9%, female 64.8%), respectively. The lifetime and one year prevalences of alcohol use disorder (dependence/abuse) were 26.7% (male 37.9%, female 8.3%), and 8.7% (male 12.8%, female 2.1%), respectively. The lifetime and one year prevalences of mood disorder were 18.1% (male 13.5%, female 25.8%), and 10.4% (male 7.2%,female 16.9%), respectively. The lifetime and one year prevalences of schizophrenia and other psychotic disorders were comparable with the 2001 community survey by 1.19% to 1.32%, and 0.51% to 0.61%, respectively. The lifetime and one year prevalences of schizophrenia were also comparable by 0.16% to 0.28%, and 0.16% to 0.25%, respectively. There were no significant changes of prevalence rates when correction were applied to other psychiatric diagnosis. Conclusion : The results of this study could be used for evaluating the distribution of psychiatric diagnoses in mental health related facilities and for planning mental health policies.

한국 주요정신장애의 유병률 및 관련요인 : 2006 전국정신질환역학조사

조맹제,장성만,함봉진,정인원,배안,이영문,안준호,원승희,손정우,홍진표,배재남,이동우,조성진,박종익,이준영,김진영,전홍진,이해우 大韓神經精神醫學會 2009 신경정신의학 Vol.48 No.3

Objectives The aims of this study are to estimate the prevalence of the DSM-IV psychiatric disorders in the Korean population using the Korean version of Composite International Diagnostic Interview (K-CIDI), and to compare those with previous studies. Methods The Korean Epidemiologic Catchment Area study Replication (KECA-R) was Conducted between August 2006 and April 2007. The sampling of the subjects was carried out across 12 catchment areas. A multistage, cluster sampling design was adopted. The target Population included all eligible residents aged 181o 64 years. Face-to-face interviews were conducted with the Korean version of Composite International Diagnostic Interview (K-CIDI) based on the DSM-IV (N=6,510, response rate=81.7%). Results A total of 6,510 participants completed the interview. The lifetime and 12-month prevalence rates for all types of DSM-IV disorders were 30.0% and 17.3%, respectively. Those of Specific disorders were as follows : 1) alcohol use disorder, 16.2% and 5.6% ; 2) nicotine use disorder, 9.0% and 6.0% ; 3) specific phobia, 3.8% and 3.4% ; 4) major depressive disorder, 5.6% and 2.5% ; and 5) generalized anxiety disorder, 1.6% and 0.8%. Data relating to nicotine and alcohol use disorder revealed a very high male/female ratio. Mood disorder and anxiety disorder were more prevalent among females than males. Conclusion The prevalence of psychiatric disorders was high. In comparison with other studies, remarkable differences in the distribution of psychiatric disorders across the country and times were observed.

압밀촉진 케이슨 공법의 타당성

조남준,황성일 국민대학교 생산기술연구소 2002 공학기술논문집 Vol.25 No.-

In this study, caissons for accelerating consolidation with many filtering-drains on their back sides, for the purpose of inducing lateral dissipation of excess pore water pressure caused by new backfill, have been proposed. And to analyze the effect of accelerating consolidation by using proposed caissons, the analytical solution for two-dimensional consolidation equation is derived. In an isotropic clay, this study shows consolidation times at ξ = 0.1 to reach the average degrees of consolidation of 50% and 90% when using caissons with drains are taken about 7 and 3.5 times less than those when using the conventional caissons, respectively.

O/W 마이크로에멀젼과 나노에멀젼의 특성에 관한 연구

조남준,구자경 한국기술교육대학교 2006 論文集 Vol.13 No.1

We have investigated the properties of oil-in-water microemulsions and nanoemulsions. The nanoemulsions are prepared with using a microfluidizer under 1,500bar and they showed decreasing droplet diameter upon repeating cycles in fluidizer up to six times. The microemulsions prepared with using a homogenizer exhibited the decrease in particle diameter with increasing surfactant HLB value, decreasing oil content and increasing surfactant/oil ratio. However, the diameters of nanoemulsions prepared with using a fluidizer, a high shear device, did not much depend on the HLB of surfactants and the oil content in water. The particle size of nanoemulsions prepared with 10% soybean oil converged around 110-125nm regardless of surfactant HLB values.

한국 정신장애의 역학 조사 연구[I] : 각 정신장애의 유병률

조맹제,함봉진,김장규,박강규,정은기,서동우,김선욱,조성진,이준영,홍진표,최용성,박종익,이동우,이기철,배재남,신정호,정인원,박종한,배안,이충경 大韓神經精神醫學會 2004 신경정신의학 Vol.43 No.4

Objectives : This study aims to estimate the prevalence of the DSM-IV psychiatric disorders in Korean population using the Korean version of Composite International Diagnostic Interview (K-CIDI). Methods : Subjects were selected by taking multi-stage, cluster samples of 7,867 adult household residents, 18 to 64 years of age, in ten catchment areas. Total 78 trained interviewers administered the K-CIDI to the selected respondents, from June 1 to November30,2001. Results : Total 6,275 respondents completed the interview. Some 33.5% of respondents reported at least one lifetime disorder, 20.6% reported at least one-year disorder, and 16.7% reported at least one-month disorder. The most common lifetime disorders were alcohol abuse/dependence (17.24%), nicotine dependence/withdrawal (11.19%), specific phobia (5.16%), and major de-pressive disorder (4.25%). The lifetime prevalence of substance abuse/dependence (0.25%) and schizophrenia (0.16%) was very low. Nicotine and alcohol use disorder showed very high male/female ratio. Mood disorder and anxiety disorder were more prevalent among female than male. Conclusion : The prevalence of psychiatric disorders was high. In comparison with other studies, remarkable differences in distributions of psychiatric disorders across the areas and times were observed.

窒素分施에 따른 Subangrass계 雜種의 生育, 收量 및 飼料成分 變化

趙南棋,朴成埈,姜榮吉,宋昌吉 濟州大學校 亞熱帶農業硏究所 1998 亞熱帶農業硏究 Vol.15 No.-

ABSTRACT Two sudangrass hybrids were treated with the split application (1, 2, 3, 4, and 5 times) of 25 kg/lOa of N to determine the effects of split N application on the growth, yield and feed composition of sudangrass hybrids in Cheju. Pioneer 988 headed five days earlier than Pioneer 931 did. The number of days from planting to heading averaged across the two hybrids was delayed from 73 to 79 days as the frequency of the split N applications was increased from one to five times. At heading, Pioneer 988 was about 8cm taller than Pioneer 931 was. Plant height was increased with increasing the frequency of split N application. As the frequency of split N application was increased, stem weight, leaf weight, root length, and root weight were significantly increased. Fresh forage yield averaged the two hybrids was increased from 5,505 to 7,391 kg/lOa as the frequency of the split N application was increased from one to five times. As the frequency of the split application was increased, crude fat and crude protein contents also were increased but crude fiber content was decreased.

인도네시아 지진해일에 대한 의료지원보고

조수형,김선표,최웅지,김성중,조남수,이준영,문성표 朝鮮大學校 附設 醫學硏究所 2005 The Medical Journal of Chosun University Vol.30 No.2

An unprecedented magnitude of disaster, Tsunami, washed away Southeast Asia, on December 26, 2004. and more than 200,000 peoples were killed by the disaster. Staffs of our hospital visited Indonesia for voluntary medical supports from January 12, to January 21, 2005. We summarize here our 10 days' experiences in Indonesia.

혈액배양검사에서 확인된 G군 연세구균에 의한 봉와직염 1예

조영환,김양수,김백남,추은주,김경덕,김남중,류지소,우준희 대한화학요법학회 2002 대한화학요법학회지 Vol.20 No.1

봉와직염은 대부분이 A군 연쇄구균이나 황색포도구균에 의해 발생하는 것으로 알려져있다. 저자들은 관상동맥 우회술을 위한 정맥절제술을 받았던 과거력이 있고 족부백선이 있었던 환자에게서 혈액배양검사에서 확인된 G군 연쇄구균에 의한 봉와직염을 경험하였기에 문헌고찰과 함께 보고하는 바이다. Group A streptococci and Staphylococcus aureus are responsible for the overwhelming majority of cases of cellulitis. But, streptococci belonging to other group (group C, group G, and in neonates particularly, group B) are sometimes the etiologic agents. Diagnosing the etiology of cellulitis rests on isolating an organism from blood cultures, skin biopsy, or tissue aspirate. We experienced a case of a group G streptococcal cellulitis that identified by blood cultures, which is relatively rare in Korea and treated the patient with cefazolin.