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가솔린 차량의 각 요소별 연료소모량 분석을 위한 실험적 연구
유정철(Jengcheol Yoo),송해박(Haibak Song),박경석(Kyungseok Park),유재석(Jaisuk Yoo),박영무(Youngmoo Park),이종화(Jonghwa Lee) 한국자동차공학회 2002 한국자동차공학회 Symposium Vol.2002 No.11
A vehicle fuel economy is one of the most important issues in view of environmental regulation and customer’s<br/> needs. In order to improve the vehicle fuel economy, great efforts has been carried out on the components bases .<br/> However, systematic analysis of vehicle fuel consumption is necessary for the further improvement of vehicle fuel<br/> economy. In this paper, a methodology for the breakdown of vehicle fuel consumption was studied and proposed for<br/> systematic analysis of the vehicle fuel economy. The energy equation for the vehicle power train was set up for the<br/> analysis of the vehicle fuel economy and simplified to be calculated or estimated using the measured data in a<br/> vehicle. The amount of fuel that was used in vehicle components under arbitrary driving conditions was quantified.
송해박(Haibak Song),유정철(Jengcheol Yoo),이종화(Jonghwa Lee),박경석(Kyungseok Park) 한국자동차공학회 2003 한국 자동차공학회논문집 Vol.11 No.2
A simulation study was carried to analyze the vehicle fuel consumption on component basis. Experiments was also carried out to identify the simulation results, under FTP-75 Hot Phase driving conditions. and arbitrary driving conditions. A good quantitative agreement was obtained. <br/> Based on the simulation, fuel energy was used in pumping loss(3.7%), electric power generation(O.7%), engine friction(12.7%), engine inertia(O.7%), torque converter loss(4.6%), drivetrain friction(O.6%), road-load(9.2%), and vehicle inertiae 13.4%) under FTP-75 Hot Phase driving conditions.<br/> Using simulation program, the effects of capacity factor and idle speed on fuel consumption were estimated. A increment of capacity factor of torque converter resulted in fuel consumption improvement under FTP-75 Hot Phase driving conditions. Effect of a decrement of idle speed on flle) consumption was negligible under the identical driving conditions.<br/>
가솔린 차량의 각 요소별 연료소모량 분석을 위한 실험적 연구
유정철(Jengcheol Yoo),송해박(Haibak Song),이종화(Jonghwa Lee),유재석(Jaisuk Yoo),박영무(Youngmoo Park),박경석(Kyungseok Park) 한국자동차공학회 2004 한국 자동차공학회논문집 Vol.12 No.1
A vehicle fuel economy is one of the most important issues in view of environmental regulation and customer's needs. In order to improve the vehicle fuel economy, great efforts has been carried out on the components bases. However, systematic analysis of vehicle fuel consumption is necessary for the further improvement of vehicle fuel economy. In this paper, a methodology for the breakdown of vehicle fuel consumption was studied and proposed for systematic analysis of the vehicle fuel economy. The energy equation for the vehicle power train was set up for the analysis of the vehicle fuel economy and simplified to be calculated or estimated using the measured data in a vehicle. The amount of fuel that was used in vehicle components under arbitrary driving conditions was quantified.<br/>
송해박(Hailbak Song),유정철(JengcheoI Yoo),이종화(Jooghwa Lee),유재석(Jaisuk Yoo),박경석(Kyungseok Park),황준하(Joonha Hwang),박승도(Seungdo Park) 한국자동차공학회 2002 한국자동차공학회 춘 추계 학술대회 논문집 Vol.2002 No.5_2
A simulation study was carried to analyze the vehicle fuel consumption on component basis. Experiments was also carried out to identify the simulation results, under FTP-75 Hot Phase driving conditions and arbitrary driving conditions. A good quantitative agreement was obtained.<br/> Based on the simulation, fuel energy was used in pumping loss(3.7%), electric power generation(O.7%), engine friction(l2.7%), engine inertia(O.7%), torque converter loss(4.6%), drivetrain friction(O.6%), road-load(9.2%). and vehicle inertia(I3.4%) under FTP-75 Hot Phase driving conditions.<br/> Using simulation program, the effects of capacity factor and idle speed on fuel consumption were estimated. A increment of capacity factor of torque converter resulted in fuel consumption improvement under FTP-75 Hot Phase driving conditions. Effect of a decrement of idle speed on fuel consumption was negligible under the identical driving conditions.
홍진표,송해철,이무송,이창화,안준호,한오수,안태영,김성윤 大韓神經精神醫學會 2005 신경정신의학 Vol.44 No.6
Objectives : The purpose of this study was to investigate the prevalence of erectile dysfunction (ED) in a rural area of Korea and to examine the relationship between the prevalence and correlates of subjects. Method : This study was done as a part of the chronic disease survey of rural area by the Asan Foundation. Among 30 years or older population from Jung Eup, a rural area of Korea, 711 male subjects were sampled using a cluster probability sampling method. Trained interviewers visited and interviewed subjects aged 30 years or older with a structured interview. ED was categorized as 'none', 'mild', 'moderate', or 'severe' according to the ability to 'attain and/or maintain an erection satisfactory for sexual intercourse'. Response rate was 54.3% (N=386). Results : The age weighted prevalence of ED was 27.2% (minimal 14.1%, moderate 7.6%, severe 5.5%). Prevalence and severity increased with age. Liver disease and underweight were significantly (p<0.05) associated with ED. Smoking seemed to be correlated with ED, but did not reach statistically significant level. Conclusion : ED was highly prevalent in the rural community of Korea. Medical, sociodemographic, and lifestyle variables associated with ED may alert physicians to patients at risk for ED and offer insight to its etiology.
한국어판 DSM-IV 인격장애 구조화된 면담도구 개발:신뢰도 연구
홍진표,송해철,이동은,방수영,이선형,권수희,박수빈 대한신경정신의학회 2010 신경정신의학 Vol.49 No.1
Objectives: The diagnosis and assessment of personality disorders are crucial for research, as well as for clinical practice. The Structured Interview for the DSM-IV Personality (SIDP-IV) is a structured diagnostic interview for DSM-IV personality disorders (PD). This study aimed to develop the Korean version of the SIDP-IV and to test its inter-rater reliability. Methods: A panel consisting of 7 psychiatrists translated the SIDP-IV into Korean. Six psychiatrists and 1 psychiatric nurse, all trained to apply the SIPD-IV, interviewed 70 inpatients (male, 30;female, 40) using this translation, two joint-examiners per patient interview. We used kappa coefficients to test diagnosis agreement, the Pearson correlation coefficient to test K-SIDP-IV total score agreement, and percent agreement to test the agreement on the number of DSM-IV criteria met. Results: The kappa coefficients for most of the PDs, such as paranoid, borderline, histrionic, narcissistic, avoidant, dependent, and obsessive-compulsive, were excellent (≥0.80). Moreover, the kappa coefficients for schizoid and antisocial PD were acceptable (k=0.66). The Pearson correlation coefficient for the K-SIDP-IV total scores were high for all personality disorders (r=0.91-0.97). Percent agreement regarding the number of DSM-IV criteria met varied from 92.9% to 100%. Conclusion: The Korean version of the SIDP-IV is a reliable instrument for the assessment and diagnosis of personality disorders.
김민후,이동은,정석훈,송해철,한오수,이선형,권수희,홍진표,Kim, Min-Hoo,Lee, Dong-Eoun,Chung, Seock-Hoon,Song, Hae-Cheol,Hahn, Oh-Su,Lee, Seon-Hyung,Kwon, Soo-Hee,Hong, Jin-Pyo 대한불안의학회 2006 대한불안의학회지 Vol.2 No.2
Objectives : Only a few prospective studies of panic disorder are available. This study investigated naturalistic outcome of panic disorder patients at twelve months after the initial diagnosis. Methods : A total of 84 subjects were diagnosed with panic disorder by diagnostic interview, Structured Clinical Interview for DSM-IV (SCID-IV) and Anxiety Disorder Interview Schedule for DSM-IV (ADISIV). Among them, 80 subjects could be evaluated by means of Panic Disorder Severity Scale (PDSS) at follow-up interview after twelve months. Treatment continuation was also examined at follow-up interview. Results : At initial intake, 80 patients were classified into 22% with mild, 33% with moderate-to-marked, and 45% with severe symptoms on the basis of their PDSS total score. At twelve months, 20% of patients reached remission, 65% had mild and 15% had moderate-to-marked symptoms. Initial panic symptom severity, presence of agoraphobia, panic symptom duration before diagnosis, number of comorbid Axis I disorders were associated with significantly higher PDSS total score at twelve months. Forty six percent of total patients continued medication and 23% have stopped treatment by clinician's recommendation and 31% have selfdiscontinued their medication. At twelve months, all three groups were improved but self-discontinuation group had significantly higher PDSS total score. Conclusion : In the one-year naturalistic outcome study of panic disorder patients, high percentage of patients achieved remission or had mild symptoms.
한국형 우울장애 약물치료 알고리듬 (Ⅳ) : 우울장애의 아형 및 부작용에 따른 항우울제의 선택과 여성우울장애에서의 치료전략
전현태,이상열,김원,민경준,박원명,서정석,석정호,송해철,전덕인,홍진표,한국형 우울장애 약물치료 알고리듬 2006 연구그룹 大韓神經精神醫學會 2007 신경정신의학 Vol.46 No.6
Objectives : In 2002, the Korean Medication Algorithm Project for Major depressive Disorder (KMAP-MD) was published, but there has been a need for a guideline about detailed issues of depressive disorder. We revised KMAP-MDD andreestablished Korean Medication Algorithm Project for Depressive Disorder (KMAP-DD) in 2006. Methods : A questionnaire had been developed by the executive committee for KMAP-DD. The review committee consisted of 101 experienced psychiatrists. From the total of 22 questions in the questionnaire, 7 questions were evaluated for these subjects . We classified the expert opinions to 3 categories according to its confidence interval; first, second and third line. Results : SSRI and venlafaxine were the first line antidepressants (AD) for atypical and melancholic depression. For dysthymic disorder and minor depressive disorder, SSRI was recommended as the first line medications. Only AD medications was a preferred initial strategy for treating premenstrual dysphoric disorder, mild to moderate and severe non-psychotic postpartum depression. In severe psychotic postpartum depression, combination therapy of AD and atypical antipsychotics was the treatment of choice. SSRI was preferred when considering sedation, anticholinergic and cardiovascular adverse effects. Also, experts recommended mirtazapine against gastrointestinal adverse effects and bupropion in avoiding sexual dysfunction. Conclusion : These results suggest that clinicians have to consider both clinical situations and drug adverse effects in the choice of antidepressant medications.