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Nd_(2-x)Ce_xCu_3O_(4-y)의 열기전력 측정연구
조경철,최무용 성균관대학교 기초과학연구소 1989 論文集 Vol.40 No.2
Measurments are made for the thermopower of N-type high-Tc oxide supercondutor Nd_(2-x)Ce_xCuO_(4-y), as functions of the amount of Ce dosage x, the oxygen deficiency y, and the temperature. When x or y is small, i.e. when the number of the doped electrons is small, the thermopower is found to be negative for the whole temperature range except for the lowest temperatures. For the samples wtih large x or y, on the other hand, we observed that the thermopower is positive against on expectation, for a broad temperature range from ∼20K up to room temperature. We have also found that there occurs a phase transition at around 200K, where the thermopower begins to change from negative to positive. These experimental results raise questions about the effects of the newly found phase transition on the electronic structure of the material, as well as about the general expectation that the charge carriers in this material may be electrons unlike other high-Tc supercondutor.
조광현,우종수,황윤호,이양행,박철호,김종성,김철호,이경순,조영일,박태인 인제대학교 1985 仁濟醫學 Vol.6 No.4
A successful treatment of infants and children with congenital heart defects depends upon several factors: diagnosis must be accurate, the operative technique, including techniques of perfusion and myocardial preservation, must be suited to the needs of patients and intensive cares, including accurate anesthesia, must be applied through all stages of investigation and treatment, i.e. before, during and after the operation. Recently we performed a open heart surgery successfully for a six-years old girl who had suffered from frequent upper respiratory tract infection and mild to moderate exertional dyspnea with congenital heart defects (ventricular septal defect, Kirklin type II, with patent foramen ovale). The operation and postoperative course were very smooth. And now we report this with review of literatures.
방위별 지면 조도를 고려한 누락 풍속자료의 자동복구에 대한 연구
조경호,허종철,김건훈 濟州大學校 産業技術硏究所 1999 산업기술연구소논문집 Vol.10 No.1
There are frequent chances that the measuring of wind data fails due to unexpected several factors. In these situations, the lost data are to be recovered properly for the further wind data analysis. The conventional method of wind data recovery is the interpolation or extrapolation from the available wind data using a constant ground roughness factor. In this study, a new concept of the directional ground roughness factor is proposed to improve the reliability of the recovered wind data. The application of the proposed concept to the field data shows promising results so that the proposed method can be successfully used for the recovery of the lost wind data.
정신재활 치료가 정신분열병 환자의 재발율, 입원횟수, 입원일수 그리고 치료 경비에 미치는 효과 : 2년 추적조사 연구
조진석,공지현,김진원,심경순,하준선,김철권,강동호,장정희,변원탄 大韓神經精神醫學會 1998 신경정신의학 Vol.37 No.5
목 적 : 사회기술훈련, 환자교육, 가족교육, 집단치료, 예술치료, 작업치료와 같은 포괄적인 정신재활 치료를 약물치료와 병행할 경우 약물치료만 시행할 때에 비해 정신분열병 환자의 재발율, 입원횟수, 입원일수, 직접 치료경비 등에 어떤 효과가 있는 지를 알아보기 위함이다. 연구방법 : 1993년 9월부터 1995년 2월까지 양산 신경정신병원의 폐쇄병동에서 퇴원한 20∼35세 사이의 정신분열병 환자 173명을 대상으로 46명에게는 6개월동안 정신재활 치료를 시행하였고 127명에게는 통상적인 외래치료만 시행한 후 연구시작 시점을 포함하여 2년동안 양군에 속한 환자들을 대상으로 재발율, 입원횟수, 입원일수, 직접 치료경비 등을 1년 단위로 추적 조사하였으며, 연구시작 시점을 기준으로 전과 후의 매년 평균 입원횟수, 입원일수, 직접 치료경비도 서로 비교하였다. 결 과 : 정신재활 치료를 약물치료와 병행할 경우 약물치료만 시행할 때에 비해 재발율, 입원횟수, 입원일수, 직접 치료비용이 현저히 감소되었다. 그리고 정신재활 치료를 받은 군에서는 치료 전에 비해 치료 후에 재발율, 입원횟수, 입원일수, 직접 치료비용이 유의하게 감소하였지만 통상적인 외래치료만 받은 군에서는 치료 전과 후간에 유의한 변화를 보이지 않았다. 결 론 : 정신분열병 환자들에게 정신재활 치료를 약물치료와 병행할 경우 약물치료만 시행할 때에 비해 환자의 임상적 경과를 호전시킬 뿐 아니라 가족의 경제적 부담도 줄일 수 있다. Objective : We evaluated the clinical efficacy of a comprehensive psychiatric rehabilitation of schizophrenia, including family psychoeducation, patient education, social skills training, group psychotherapy, art therapy, and occupational therapy. Method : From September 1993 to February 1995, 173 chronic schizophrenics who met DSM-IV criteria and were discharged from a locked ward were assigned into the psychiatric rehabilitation service group(psychiatric rehabilitation group, n=46) or the customary out-patient service group(out-patient group, n=127) prospectively, but not randomly. Assignment was based on preferences of patients and their relatives, Each subject included in the psychiatric rehabilitation group received twice weekly patient education, social skills training, family psychoeducation, group psychotherapy, art therapy, occupational therapy and maintenance chemotherapy during a 6-month period. Those in the out-patient group received individual supportive psychotherapy and maintenance chemotherapy according to their clinical needs for 10-20 minutes once per week. After entry into the study, all subjects were assessed for the number of readmission, days of hospitalization, and the direct treatment costs through the first and second year of follow-ups. These outcome variables were also compared pre-and post-2 years at the time point of entry into the study. Aftercare chemotherapy on a weekly to monthly basis continued for the remainder of the two year follow-up period. Results : With regard to the mean number of hospital admissions per year, the mean days of hospitalization per year, and the direct treatment costs per year, the psychiatric rehabilitation group had significantly decreased all clinical outcomes 2 years after compared with before receiving psychiatric rehabilitation. But there were no significant differences in the all clinical outcomes between before and after study intake in the out-patient group. For the number of relapse regardless of drug compliance, 4 patients(9%) during first year and 14 patients(30%) during second year were relapsed in the 46 subjects of the psychiatric rehabilitation group. In contrast, 75 patients(59%) during first year and 90 patients (71%) during second year relapsed in the out-patient group. When considering the effect of drug noncompliance to relapse, 4(9%) and 14 patients(30%) were relapsed while on medication respectively during the first and second year in the 46 of the psychiatric rehabilitation group, vs. 27(34%) of 79 patients on medication during the first year and 31(46%) of 68 patients on medication during the second year were relapsed in the out-patient group. Conclusions : These results indicate that the comprehensive psychiatric rehabilitation can be useful therapeutic intervention both to improve the clinical outcomes of schizophrenic patients and to reduce the economical burden of their relatives.
방위별 지면 조도를 고려한 누락 풍속자료의 자동복구에 대한 연구
조경호,허종철,김건훈 濟州大學校工科大學産業技術硏究所 1999 尖端技術硏究所論文集 Vol.10 No.1
There are frequent chances that the measuring of wind data fails due to unexpected several factors. In these situations, the lost data are to be recovered properly for the further wind data analysis. The conventional method of wind data recovery is the interpolation or extrapolation form the available wind data using a constant ground roughness factor. In this study, a new concept of the directional ground roughness factor is proposed to improve the reliability of the recovered wind data. The application of the proposed concept to the field data shows promising results so that the proposed method can be successfully used for the recovery of the lost wind data.
조경철,김선형,이순흠 순천향대학교 부설 산업기술연구소 1999 순천향 산업기술연구소논문집 Vol.5 No.2
The objectives of this research are to develop the educational modem system. The main actives and the results of this research are summary as follows. 1. State-of-the art analysis of the modulator and demodulator system for education. 2. System analysis and design of the modem system for education. 3. Development of software for the modem system's performance test. 4. Development of hardware for individual system block test. The modem system is analyzed and, the designed to have module-based structures for effective education.