Sinc 기저함수를 이용한 CGFFT의 수렴률 개선

이기태,김장형,장재성 濟州大學校 工科大學 産業技術硏究所 1992 産業技術硏究報告 Vol.3 No.-

The current induced on a perfectly conducting strip excited by incident fields which are transverse magnetic (TM) wave or transverse electric (TE) wave to the strip axis are solved by three methods. The one is analytic and the others are numerical method: SIT (Spectral Iteration Technique), CGFFT (Conjugate Gradient Fast Fourier Transform). It is estimated accuracy of current values, as that are compared results of the analytic method with that of the numerical methods. The procedure involves the incorporation of subdmain basis functions associated with the current representation of a conducting strip. It is shown that significant improvements are achieved in the convergences of the CGFFT method when using sinc basis functions.

Clozapine이 백서의 Schedule-Induced Polydipsia에 미치는 영향

이기철,정홍경,이정호,홍승범,최영민,전성일,정재현,하준명 대한생물치료정신의학회 2000 생물치료정신의학 Vol.6 No.2

Object : This study was designed to evaluate the effects of clozapine which is one of most useful atypical antipsychotics in the schedule-induced polydipsic rat which is an animal model of obsessive-compulsive disorder. Methods : Spraque-Dawley rats were placed in automatic cage where a pellet dispenser automatically dispensed 90mg pellets on a fixed-time 60 seconds(FT- 60s) feeding schedule over 150-minute test session for 4 weeks. After 4 weeks of daily exposure to the FT-60s feeding schedule, experimental rats met a predetermined criterion for polydipsic behavior(greater than 3 times of water per session on average). Rats were stratified into clozapine(0.34mg/kg,i.p.), clozapine(14.63mg/kg,i.p.), clomlpramine(5mg/kg,i .p.), and vehicle (1cc/kg,i.p.) group and treated with each drugs for 3 weeks. To identify the non-polydipsic food-deprived rats, a separate group of rats(N=8) were individually housed and given a single bolus(14.5gm) of food per day which maintained them at their average body weight. Results : The results were as follows ; 1)After 4 weeks of scheduled feeding procedure, the experimental group showed significant differences than bolus control in the amount of water consumption as compared with their baseline of water intakes for 4 weeks. At the same periods, there were no differences between the experimental group and bolus control in the borty weight. 2)The clomipramine group, the clozapine 0.34mg group and the clozapine 14.63mg group showed significant decrease in the amount of water intake for at 2nd & 3rd week of drug treatment as compared with their baseline of polydipsic water intakes. But, the vehicle control group showed no changes of amounts of water intake for 3 weeks of treatment as compared with their baseline of polydipsic water intakes. Conclusion : Above findings suggest that the fixed time feeding Procedure for Schedule induced polydipsia as an animal model of obsessive compulsive disorder was effective to the evaluation of pharmacological challenge study. In clinical situation, the authors suggest that atypical antipsychotic drugs which act as serotonin and dopamine receptor antagonist may be helpful to improve the symptoms of the patients with treatment refractory obsessive-compulsive disorder.

GIS와 RS를 이용한 생태지도 작성기법에 관한 기초연구

이기철,이원화,윤해순,남춘희,김구연,김승환,서상현 한국지리정보학회 2004 한국지리정보학회지 Vol.7 No.3

본 연구는 낙동강 하구 일대의 생태계 변화와 생태 관련자료를 GIS DB로 구축하고 생태지도를 작성하였다. 생태지도 작성을 위해 1984년 11월 21일, 1997년 5월 17일에 촬영된 공간해상도 30m의 Landsat TM 위성영상과 국립지리원에서 발행된 1:25,000 수치지형도, 부산시에서 조사한 생물현황 자료를 바탕으로 DB를 구축하였다. 생태지도를 작성하기 위해, 첫째, 낙동강 하구 생태계 조사 보고서와 현재까지 진행된 생태지도에 대한 문헌 연구, 둘째, 시계열적 토지피복분류도 제작, 셋째, 동·식물상, 수질 등 생태계 항목별 BB 구축과 3단계 방식에 의한 생태계 평가, 최종적으로는 이러한 분석 결과를 바탕으로 생태계 관리를 위한 생태지도를 작성하였다. This study developed an ecological mapping technique with GIS database using the analyses of existing ecological survey reports and the change detection on the Nakdong river estuary. The data which are used to establish GIS DB include 2 Landsat TM images on Nov. 31, 1984 and May 17, 1997, 1:25, 000 topographical maps established by National Geography Institution and various ecological survey reports published by Busan metropolitan city government. The details for producing ecological map are as follows. At first, the current methods of ecomapping efforts and previous ecological surveys of Nakdong river estuary were carefully examined. Secondly, the land cover maps were created from the classified Landsat images of 1984 and 1997 for the spatiotemporal ecosystem analysis. Thirdly, the ecosystem was evaluated by using GIS ecological database based on the criteria of botany, zoology and water quality etc. Each criteria was reclassified into 3 stages which describe the overall quality of ecological condition. At last, the comprehensive ecological map was suggested as a prototype of ecosystem assesment and management tool with the discussion of further study. The findings of this study would be a milestone for preserving and managing the ecosystem.

중대산업사고 예방을 위한 종합위험관리체제(IRMS) 구축에 관한 연구

권혁면,성대현,김재현,임대식,김기영,편무욱,문일,고재욱,이영순,윤인섭 한국안전학회 2003 한국안전학회지 Vol.18 No.3

The Process Safety Management (PSM) by the Law of Industry, Safety and Health has been performed for preventing major accidents of chemical plants since 1996. In terms of preventing chemical accidents more precisely, it is essential to develop a tool for quantitative risk assessment. For this, KOSHA (Korea Occupational Safety and Health Agency) developed an Integrated Risk Management System (IRMS) . The system is designed to assimilate data on chemical plant hazards from external database, to integrate these data with location information (topographic and demographic), and to make them user-friendly accessible. The system consists of several main functions: display of five major Korean petrochemical complex layout, display of equipment layout with its information utilizing the external database, zonation of the hazard effected area with consequence analyses, the most probable accident scenario generation, accident/incident database and calculation of frequency of accident using equipment reliability database, etc. The highlight of IRMS is to provide the risk contours using GIS(Geographical Information System) technology. IRMS is intended to manage hazardous installation more systematically and effectively, to reduce the number of accident remarkably, further minimizing production loss in the plant. The system is now under application to about 500 PSM sites as well as and emergency authorities in Korea by KOSHA (Korea Occupational Safety and Health Agency)

중년후기 여성의 폐경관리와 삶의 질에 영향을 미치는 요인 분석

차경미,남철현,배성욱,서인선,김기열 慶山大學校 保健福祉硏究所 2002 保健福祉硏究 Vol.7 No.-

This study was conducted to identify influencing factors to management of menopause and quality of life and also to develope the developing education program of HRT(hormone replacement therapy) for healthy aging women. The hypothetical model explaining health promoting behavior and quality of life was constructed on the basis of Pender's health promotion model, Nho's quality of life model. The empirical data for testing the hypothetical model consisted of 356 late-middle aged(45~64) women who visited from 5th september to 20th september, 1999, in Pohang city. The reliabilities of instruments were adequate(Cronbach's alpha=0.7941, -0.9098). SPSS PC+ program were utilized for descriptive statistics and covariance structure analysis. The summary of research results was as follows: 1) The influential factors to management of menopause showed: The directed factors were the influences of family(β=.29), economical status(β=-.12), experienced symptoms of menopause(β=.24), multidimensional health locus of control(β=.15), subjective health status of compared with to another person(β=-.18). The indirected factors were the influences of family(β=.04), age(β=.05), experience of HRT's information(β=.02), belonging to occupation(β=-.03), stop of menstruation(β=-.02). 2) The influential factors to quality of life showed: The directed factors were the influences of family(β=.39), self efficiency(β=.15), subjective health status(β=-.31). The indirected factors were the influences of family(β=.37), age(β=-.97), belonging to occupation(β=.01), educational status(β=.21), a monthly income(β=.26). In conclusion, the purpose for "Healthy aging" in late-middle aged women is increasing of the quality of life after menopause. All the health providers have to efforts and harder study for developing health maintenances and health aging in late-middle aged women. Consequently, we need many kinds of public health education programs. And farther more, the developing HRT's educational program is very important in late middle-aged women's healthy aging.

특발성 좌심실빈맥(Idiopathic Left Ventricular Tachycardia)의 성공적인 전극도자절제술을 위해 단극전기도(Unipolar Electrogram)가 유용한가?

최기준,남기병,강덕현,홍명기,송재관,김재중,박성욱,박승정,박종훈,김유호 대한순환기학회 2000 Korean Circulation Journal Vol.30 No.4

성인에서 발생한 설사 동반성 용혈성 요독 증후군 3례

김진호,장광열,김구,배성진,김성은,김기현,최필선 동아대학교의과대학 1997 동아의대학술지 Vol.9 No.2

한의진단명과 진단요건의 표준화 연구 III : 3차년도 연구결과 보고

최선미,양기상,최승훈,박경모,박종현,심범상,김성우,노석선,이인선,정진홍,이진용,김달래,임형호,김윤범,박성식,송태원,김종우,이승기,최윤정,신순식 한국한의학연구원 1997 한국한의학연구원논문집 Vol.3 No.1

The diagnostic requirements were suggested and explained regarding the systems of differentiation of symptoms and signs in the third year study of standardization and unification of the terms and conditions used for diagnosis in oriental medicine. The systems were as follows : - analyzing and differentiating of epidemic febrile disease - analyzing and differentiating in accordance with the Sasang constitution medicine based on four-type recognition - differentiation of disease according to pathological changes of Chong and Ren channels - standards for diagnosis of women's disease - standards for diagnosis of children's disease - standards for diagnosis of motor and sensor disturbance (-muscle. born, joint, etc.) - standards for diagnosis of neuropsychiatric disease - standards for diagnosis of five sense organ disease - standards for diagnosis of external disease The indivisual diagnosis pattern was arranged by the diagnostic requirements in the following order : another name, notion of diagnosis pattern, index of differentiation of symptoms and signs, the main point of diagnosis, analysis of diagnosis pattern, discrimination of diagnosis pattern, prognosis, a way of curing a disease, prescription, herbs in common use, disease appearing the diagnosis pattern, documents. The standards for diagnosis of each disease was arranged by the diagnostic requirements in the following order : another name, notion of disease, the main point of diagnosis, analyzing and differentiating of disease, analysis of disease, discrimination of disease, prognosis, a way of curing and prescription of disease, disease in western medicine appearing the disease in oriental medicine, documents.

비만 여성을 대상으로 한 해조류 추출물의 국부처치와 운동 병행을 통한 지방분해 효과의 임상적 검정

서태수,이인숙,변재철,김규호,박승한,김유영,김상국,김현정,김상기,신동철,성미영,박종석,김종기,박언휘 한국스포츠리서치 2003 한국 스포츠 리서치 Vol.14 No.3

This study was carried out to test the body fat breakdown during topical seaweed extract treatment and in combination with the aerobic exercise. Of 20 female obesity subjects, ten treated a cream types of seaweed extract(control group) and ten treated a placebo cream(placebo group). Topical treatment of each sample was designed for 4 weeks, and treated with 2 times a day about 10ml on the abdomen and the thigh, respectively. All subjects were participated aerobic dance half hour a day and four times a week. After 4 weeks of topical treatment and exercise, they were measured body fat, skinfold thickness, body circumference. Then venous blood samples were taken and analyzed blood cells, serum enzymes, and serum lipids. There were reduction of body weight, % of body fat, antebrachium, brachium, chest, waist, thigh circumference and abdomen thickness between pre and post treatment in both group. Especially, body weight and % of body fat significantly reduced in the subjects treating the seaweed extract than those treating the placebo. There were significant decrement in total cholesterol and LDL whereas increment in HDL and TBIL in the control group, but no significant difference in the placebo group. In conclusion, there were 7.6% of body fat reduction during 4 weeks of aerobic exercise and 21% of body fat reducement in combination of topical seaweed treatment and exercise, respectively. These results suggest that the topical treatment of seaweed extract should be very effective for fat breakdown. Especially, the body fat breakdown maximized in the combination with the topical seaweed extracts treatment and the aerobic exercise.

Excessive and continuous local bleeding on the hair transplanted site and hair survival

( Gi Hyun Seong ),( Dea Kwan Yun ),( Uri Shon ),( Myeong Jin Park ),( Myung Hwa Kim ),( Byung Cheol Park ) 대한피부과학회 2019 대한피부과학회 학술발표대회집 Vol.71 No.1

The graft survival rate is determined by the complex action of various factors. Of these, there are no studies or cases of local bleeding and graft survival after transplantation. A 49-year-old man visited the dermatology clinic for hair transplantation consultation with male pattern baldness. he was taking warfarin for atrial fibrillation. The preoperative blood test showed elevated prothrombin time and international normalized ratio. Other laboratory tests including platelet aggregation test, platelet count and activated partial thromboplastin time showed normal results. The patient took warfarin until the day before surgery. A total 3508 hairs were transplanted into the frontal and parietal region using implanter. In 3 hrs after surgery, bleeding along the graft site of hair follicle 2-3 sites of the frontal graft area started and continued overnight. Warfarin was stopped. Wound care was performed using isotonic normal saline so that the graft was not damaged as much as possible. One year after the surgery, the newly grown hair was found to be healthy on the scalp and more than 90% of the transplanted hair was implanted well. We report here on the survival of transplanted hair after excessive and continuous local bleeding on the hair transplanted site.