HYBRID VOLTERRA SYSTEM WITH TWO TYPES OF IMPULSES

Park, Jong-Seo,S.A. Belbas,Kim, Seon-Yu 晋州敎育大學校 科學敎育硏究院 2006 科學敎育硏究 Vol.29 No.-

본 연구의 목적은 충격을 받는 조건이 두 가지 유형과 다중 적분을 갖는 볼테라 적분 방정식의 어떤 특성을 포함하는 방정식의 색다른 부류를 조직적으로 확립하고 분석해 보고자 한다. 여기서 우리는 반복하는 방법에 의하여 주어진 조건의 적분방정식에 대한 해의 존재성과 유일성을 구조적으로 밝히는데 그 목적이 있다. 본 논문을 통한 발전적인 연구가 수행되면 여러 가지 자연현상을 모델화하여 적용함으로 인해 이론적인 부분뿐만 아니라 응용적인 면에서 아주 많이 적용될 것으로 생각되며 전자공학, 자동제어, 생물학, 의학 등의 다양한 실생활의 문제에 활용이 가능한 충분한 가치가 있으리라 생각한다. In this paper, we formulate and analyze a novel class of equations that contain some of the characteristics of Volterra intergral equations with multiple integrals and two types of impulsive terms. We will give a constructive proof of existence and uniqueness of solutions by an iteration method.

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.

보문 : Polyethylene Film포장이 포도 Sheridan의 저장력에 미치는 영향

남상영(Sang Young Nam),김경미(Kyoung Mi Kim),박종천(Jong Chun Park),주선종(Seon Jong Joo),정재현(Jai Hyun Jung) 한국식품저장유통학회(구 한국농산물저장유통학회) 1997 한국식품저장유통학회지 Vol.4 No.1

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.

메트암페타민 정맥주사 남용후 발생한 뇌경색 2예

김종환,김동선,김상진,예종수,김성은,김응규,허경 대한신경과학회 1998 대한신경과학회지 Vol.16 No.5

교수·학습과정에서 마이크로 컴퓨터의 활용방법에 관한 연구 : 개별학습방법과 소집단학습방법을 중심으로 Individual learning approach Versus Small Group learning approach

박종선,허운나 컴퓨터교육연구소 한양대학교 1991 교수공학연구 Vol.1 No.1

The purpose of the study was to investigate possibility on new method using microcomputer which facilitate student-student interaction in learning and teaching process. Definite objective of the study was to examine the relative efficacy of small group versus individual computer-assisted instruction(CAI) on students achievement and learning time. Additionally, this study was to identify that student-student interactions patterns have a great deal of influence on students achievement and learning time as analyzing oral interaction patterns made by students while working with computers. Two hypotheses were drawn from the review of literature : HypothesisⅠ; Small group learning approach will be higher achievement of low ability students than individual learning approach in CAI. Hypothesis Ⅱ; Learning time of small group learning approach will be shorter than that of low ability students utilizing individual learning approach in CAI. In order to examine the hypotheses, Forty H girl's middle school students were selected for the experiment and randomly assigned to both experiment group (small group learning setting) and control group (individual learning setting). Learning time in each learning setting was recorded while students are studying. And interaction between students in small group learning setting did content analysis after recording by small cassette tape recorder. After learning was over, achievement tested was analyzed using t-test. The findings through analyzing could be summarized follows: 1st, Achievement of high ability students were no the difference between small group learning approach and individual learning approach in CAI, but there was unquestionable difference between two learning methods in low ability students. In other words, small group learning method is significantly higher than individual learning method in low ability students. The result supported the hypothesis I. 2nd, Learning time of high ability students using individual learning way was shorter than that of small group learning way in CAI, but there were no the difference between two learning methods in low ability students. Therefore, the current research finding was not support the hypothesis Ⅱ. 3rd, The student-student interaction within small group learning setting was almost entirely learning oriented (94.62%), consisting of statements concerning the achievement of the assigned learning task. Especially, student-student interaction patterns of learning task had a great deal of influence on students achievement and learning time. In conclusion, group process through interaction between students was expanded student experiences and appreciation for other viewpoints, promoted active involvement of students as pooviding learners with frequent opportunities to create thoughts, to hear other's reactions. Especially, computer using method based on interaction among students may be a realistic alternative for CAI in terms of financial exigency. While further research is needed computer using way under different and more specific learning condition. The result of the research will help educators use computers more wisely.

Digital imaging fiber-optic trans-illumination과 laser fluorescence를 이용한 평활면 초기우식증의 재광화에 관한 비교 연구

황규선,김종수,유승훈 대한소아치과학회 2007 大韓小兒齒科學會誌 Vol.34 No.2

본 연구는 Digital Imaging Fiber-Optic Trans-Illumination(DIFOTI)이나 Laser Fluorescence(LF)를 이용한 방법이 평활면 법랑질 초기우식증의 재광화 정도를 정확하게 monitoring 할 수 있는지의 여부를 평가하기 위하여 진행되었다. 우치 법랑질로부터 얻어진 인공 우식 절편을 특별히 제작된 의치에 식립한 다음, 10명의 실험 참가자들이 구강 내에 장착하고 3주 동안 불소 양치용액을 사용하도록 한 다음 Confocal Laser Scanning Microscopy(CLSM)로 측정된 병소 깊이를 gold standard로 사용하여 DIFOTI와 LF로 측정된 우식 절편의 재광화 정도를 비교 평가한 후 다음과 같은 결론을 얻었다. 1. DIFOTI에 측정된 광도 백분율이 재광화 기간이 지남에 따라 증가하였으며, CLSM에서 측정된 병소 깊이와 유의한 역상관관계를 보였다(r=-0.683, p<0.01). 2. LF 측정치는 재광화 기간이 경과함에 따라 증가하였으며 CLSM에서 측정된 병소 깊이와 유의한 상관관계를 보였다(p<0.05). 3. CLSM 촬영 결과 500 ppm 불소 양치군이 0 ppm 불소 양치군보다 빠른 속도로 병소 깊이가 감소하는 양상을 보여 주었다. Through out the world dental caries seems to be decreased as it is difficult to make an accurate diagnosis for dental caries. The traditional diagnostic method which is probing and x-ray taking has many limitations to diagnose the early caries, so there were recommendations for the needs of new equipments such as laser fluorescence(LF), digital imaging fiber-optic trans-illumination(DIFOTI), and quantitative light fluorescence(QLF) which were developed from various study results. Also confocal laser scanning microscopy(CLSM) and ultrasonics are used for research progression. This study is to evaluate whether it is possible to monitor accurately for remineralization amount of enamel surface early caries using DIFOTI or LF. After inducing artificial caries to bovine teeth to 10 participants. remineralization was enhanced by 0 ppm and 500 ppm fluoride mouth rinse solution for 3 weeks. Then they were cross sectioned and analyzed using gold standard of the lesion depth measured by CLSM. The following results were obtained: 1. The measured percentage of light intensity(luminosity ratio) by DIFOTI increased with remineralization period, and showed significant reverse correlation with lesion depth measured by CLSM(p<0.01). 2. The measurement of laser fluorescence increased with remineralization period, and showed significant correlation with lesion depth measured by CLSM(p<0.01). 3. To the result for CLSM, 500 ppm fluoride mouth rinse group showed rapid rate for decreased tendency of lesion depth than 0 ppm fluoride mouth rinse group. In conclusion DIFOTI system was used to measure accurately for the remineralization amount of early surface caries, it is a very useful equipment to detect precisely the changes for early enamel caries remineralization during treatments.

장섬유강화 고분자 복합판의 프레스 성형에 있어서 니트라인에 관한 연구

조선형,이국웅,안종윤,윤성운 한국공작기계학회 2001 한국생산제조학회지 Vol.10 No.2

In recent years, compression molding of lone fiber-reinforced thermoplastics has been increased in commercial aspects. In the process of compression molding of composites, the flow analysis must he developed in order to accurately predict the finished part properties as a function of the molding process parameters. In this model FRTP is assumed to be nonisothermal fluid, which has different viscosities in extensional and in shear. For verification of the model, the formation of a knit line in the L-shaped parts is compared with that of experiments results. In this paper we will discuss the effects of extensional & shears viscosity ratio ξ and slip parameter α on the other mold fill-ing parameters

중학교 영어교과서 EXERCISES 분석

김민주,선종철 순천대학교 어학연구소 1994 어학연구 Vol.6 No.-

The purpose of this artcle is to analyze the parts of Exercises in the middle school English books (written on the basis of the 5th curriculum guideline ). The methods of this study are divided into two ; the use of language function and the investigation of language materials. The results are summarized as the following ; Most of English textbooks have not presented the exercises containing meaningful contents except grammatical factors. The structures such as 'S+be+C' and 'S+V+O' are presented but those of 'Here+be+S' and 'S+be+IO+DO' are not. In inflections the possessive cases are not dealt with.

代替原價會計에 關한 硏究

尹宗先 서강정보대학 1979 論文集 Vol.1 No.-

The increasement of social utilizers on the accounting information has brought about the diversification of the practical application in the accounting information. Accordingly the accounting information came into being as a result of a necessity to be published in the substitutional information, not only in the single information. As a result the only one arithmatic profit measured in the traditional accounting can not be an appropriateness to the practical use or useful information. Particularly the general price level changes may be arised much more changeable in case of the rapid rising in prices as these days. On account of these needs, the presentation of the structure of replacement cost and the practical application and the problems awaiting solution is the major point of this study. But I do not touch the study which the replcement cost accounting must introduce into the practical application of the accounting. In the accounting of the replacement cost, the current operating profit as well as the realizable profit may be a problem, and so is the method of their publication. In this study two types of profit concepts above the current operating profit and the realizable profit were presented by the practical accounting. Also the publication for the information was tried to maintain a strong point in historical cost accounting by using supplementary statements. The practicl applications of the replacement cost accounting may be with in the realm of possibility in maintaining the capital of a business enterprise and offer the useful information in the making-decision of the manager, and also may be obtained preliminary information about the future of the business enterprises by the investor. Although the replacement cost has the practical use like this, the problems awaiting solution of the following may not be realistically used if they are not solved. It must need to have materials to be able to be objective and verifiable when the replacement cost is accounted. Another question is to consider the cost-benefit problem in the accounting option. Consquently the information by the replacement cost accounting is the useful one in various sides, but the objective materials and the theroretical structure may be fixed up in order to apply the practical accounting.