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.

요로감염이 진단되었거나 의심되는 영아에서 방광요관역류를 예측할 수 있는 임상적, 실험실적 지표들에 대한 연구

조승만,홍성완,홍찬의,정철주,노영일 朝鮮大學校 附設 醫學硏究所 2007 The Medical Journal of Chosun University Vol.32 No.3

Background: Vesicoureteral reflux (VUR) in infants may be the main cause of recurrent urinary tract infection (UTI) and renal scarring. So the early diagnosis of VUR is helpful to prevent recurrence of UTI and to alleviate the grade of VUR. This study is to examine the predictability of clinical and laboratory variables for VUR in infants with confirmed or suspected UTI. Material and Methods: Data of infants younger than 12 months who underwent voiding cystourethrography (VCUG) between 2003 and 2006 were evaluated retrospectively. Among the infants with suspected UTI, infants with VUR (Group 1) vs no VUR (Group 2) were compared. And among the Infants with confirmed UTI, infants with VUR (Group 3) vs no VUR (Group 4) were compared, Variables selected in this study were age at onset, gender, fever, laboratory data and imaging (ultrasonography). Results: Among the variables, the mean of C-reactive protein (CRP) in Group 1 and Group 2 were 5.24±6.82 and 2.46±3.75, respectively, showing that Group 1 had a higher value than Group 2 (P=0.0104). And the number of patients with fever □38.5℃ in Group 1 was higher than in Group 2 (U=0.0004). The mean of C-reactive protein (CRP) in Group 3 and Group 4 were 8.95±6.1 and 5.39±6.0, respectively, showing that Group 3 had a higher value than Group 4 (P=0.0409). Conclusion: Fever≥38.5℃ and CRP≥0.6 ㎎/dL were closely associated with VUR in infants with suspected UTI. And CRP□3.4㎎/dL was closely associated with VUR in infants with confirmed UTI. However, further evaluations and studies for these variables will be needed to use them as predictors for VUR.

모르타르 충전식 스플라이스 슬리브의 부착성능에 관한 연구

조승진,안병익,김형기,박복만 明知大學校 産業技術硏究所 2002 産業技術硏究所論文集 Vol.21 No.-

The mechanical joint method is expected to take an important part in the P.C. construction methods. Grout-filled splice sleeve system is used for connecting reinforced concrete column to column and wall to wall in the construction field. This is an experimental study to clarify the bond capacity to be generated between mortar(660kgf/cm2-803kgf/cm2) and reinforcing bar in the grout-filled splice sleeve system. The developed length in the splice sleeve is 4.2d~6.2d Following main conclusions are obtained: (1) Grout-filled splice sleeve system satisfies the structural performance. (2) When comparing the experiment result with existing sleeve design formula on the bond capacity, existing formula is rather safer, but it is considered necessary to present more exact sleeve formula through more close experiment.

평금형 압출용 금형의 NC 가공 S/W 개발에 관한 연구

조승래,이춘만,박태원 國立 昌原大學校 産業技術硏究所 1998 産技硏論文集 Vol.12 No.-

Square dies are widely used for hot extrusion processes with high production rate. Especially, such dies have some advantages in manufacture of aluminum products having arbitrary shapes of cross section, because aluminum alloys can be manufactured without lubrication at a relatively low temperature. The recent development of extrusion technology has brought high precision products with thin thickness. However, the design and manufacture of square dies mainly relies on experience of industrial engineers, it often takes much lead time due to the trial-and-errors of the engineers. To overcome such difficulty, this study develops a method of automatic generation of NC codes for the manufacture of extrusion square dies. This method utilizes both CAD data of a product and database associated with die design parameters, and finally generates NC codes for an aluminum product having an arbitrary shape of cross sections. Specifically, three types of NC codes are generated for : (1) Wire-cut EDM cutting of square dies, (2) Wire-cut EDM cutting of electrodes for die land, and (3) machining of the electrodes. To demonstrate the effectiveness of the method, it is applied to a practical example. The result shows that the method can reduce the lead time for the design and manufacture of square dies as well as eliminating engineers own experience.

롤로기어캠의 모델링에 관한 연구

조승래,이춘만,정원지 한국공작기계학회 2001 한국생산제조학회지 Vol.10 No.3

In this paper, we developed an automated program for the modeling and emulation of three-dimensional roller gear cam mechanisms. The three-dimensional modeling of a roller-gear cam employs coordinate transformations based on the con-tact condition. The wire frame modeling followed by the shading technique using triangular meshing elements incorporat-ed the "tangent path technique" to reduce the number of data and computational load. Computer simulations for two kinds of products for roller-gear cam mechanism illustrate the relative motion between the modeled roller-gear cam and a turret and thus show the effectiveness of the proposed modeling.

平金型을 통한 軸對稱 定常狀態 熱間押出工程의 有限要素解析

이춘만,조승래,이승훈 國立 昌原大學校 産業技術硏究所 1997 産技硏論文集 Vol.11 No.-

The study is concerned with finite element analysis of axisymmetric hot extrusion through square dies by steady-state method. The analysis of deformation and heat transfer are carried out for the process by decoupling the two analysis. The simulation results are compared with results by experiments and non steady-state analysis. It has been thus shown that proposed method of analysis can be effectively applied to the axisymmetric hot extrusion through square dies. Process parameters, such as, heat transfer coefficient, extrusion temperature, heating temperature, feedrate of billet bar are discussed.

인벌류트 곡선의 Biarc Curve Fitting 최적화에 관한 연구

이춘만,조승래 창원대학교 공작기계기술연구센터 1999 연구업적집 Vol.1 No.1

The determination of the optimum biarc curve passing through a given set of points along involute curve is studied. The method adopted is that of finding the optimum number of span and the optimum length of the span such that the error between the biarc curve and involute curve is minimum. Iterative method is effectively used to find the optimum number and length of the span on involute curve with reduced length of NC-code.

회전스펙트럼 분석에 의한 지상풍 연구

李承萬,曺喜九 연세대학교 대학원 1981 延世論叢 Vol.18 No.1

Rotary wind spectra were computed to identify the significant periods in the surface wind time series and the horizontal distribution of rotary coefficients for the periods were discussed. Two periods were found to be significant; primary peak at the period of 24 hours and secondary peak at the period of 12 hours. The rotary coefficients for the periods were found to be clockwise along the coastal strips where sea-breeze prevails while they were anticlock7·ism in the inland regions. The distribution of the coefficients showed wave-like patterns whose wave length could be interpreted as the horizontal scale of diurnal and semi-diurnal circulations.

심실 조기 수축의 발생 부위 및 연결 간격의 차이에 따른 혈역학적 변화

진승원,김재형,노태호,조은주,김희열,이만영,김종진,박준철,채장성,홍순조,최규보 대한순환기학회 1999 Korean Circulation Journal Vol.29 No.7

만성폐쇄성 폐질환 환자에서 적혈구 항산화효소의 변화

국기용,이만재,조희충,임영국,박일,김원식,이승일,이병래 朝鮮大學校 附設 醫學硏究所 1993 The Medical Journal of Chosun University Vol.18 No.1

Toxic oxygen free radicals have been implicated as important pathologic mediators in many clinical disordesrs. Enhandng the intracellular content of antioxidant enzymes can provide means of limiting biological damage caused by oxygen free radicals. Many investigations have examined the potential of various oxyradical scavengers to modulate oxyradical injury. The oxygen free radicals play a role in the pathogenesis of chronic obstructive pulmonary disease. To investigate the pulmonary oxyradical injury and the protective role of antioxidant enzymes, author measured the amount of thiobarbituric acid reactants, the activiteies of antioxidant enzymes (superoxide dismutase, glutathione peroxidase, and catalase) and the sulfhydryl groups in serum and red blood cells from the chronic obstructive pulmonary disease groups and the normal controls. The thiobarbituric acid reactant in chronic obstructive pulmonary disease groups was increased than the controls in both serum and red blood cells, and the superoxide dismutase activity in red blood cells was no statistically difference in both groups. But, the glutathione peroxidase and catalase activities were lowered in chronic obstructive pulmonary disease groups than the controls. The sulfhydryl groups in serum and red blood cells were no statistically difference in both groups. These results suggest that the increased thiobarbituric acid reactant in chronic obstructive pulmonary disease groups mean oxygen radical toxicity, and the decreased glutathione peroxidase and catalase activities may play a role in cellular injury.