다중 제어루프에 의한 자기부상용 DC-DC 전원장치에 관한 연구

조주현,조정민,전기영,이상집,이승환,오봉환,이훈구,한경희 明知大學校 産業技術硏究所 2004 産業技術硏究所論文集 Vol.23 No.-

The author present a modified multi-loop algorithm including feedforward for controlling a 55kW step down chopper in the power supply of Maglev. The control law for the duty cycle consists of three terms. The first is the feedforward term which compensates for variations in the input voltage. The second term consists of the difference between the slowly moving inductor current and output current. The third term consists of proportional and integral terms involving the perturbation in the output voltage. This perturvation is derived by subtracting the desired output voltage from the actual output voltage. The proportional and integral action stabilizes the system and minimizes output voltage error. In order to verify the validity of the proposed multi-loop controller, simulation study was tried using Matlab simulink.

간세포암과 하대정맥 막성폐쇄의 치료 후 호전된 백혈구파괴혈관염 1예

이준엽 ( Jun Yeob Lee1 ),이주원 ( Ju Won Lee1 ),이진욱 ( Jin Wook Lee ),박현준 ( Hyun Joon Park ),장국환 ( Gook Hwan Jang ),김다정 ( Da Jung Kim ),김선민 ( Sun Min Kim ),한병훈 ( Byung Hoon Han ),정규식 ( Gyoo Sik Jung ),김근태 ( 대한류마티스학회 2015 대한류마티스학회지 Vol.22 No.5

저자들은 하지 자색반과 고환 통증으로 내원한 알코올성 간경화증 환자에서 LCV의 원인 감별하는 과정에서 HCC와 하대정맥 막성폐쇄를 진단하고 이에 대한 치료 후 LCV의 호전된 증례를 경험하였기에 문헌고찰과 함께 보고하는 바이다. Vasculitis is a heterogeneous group of diseases that destroy blood vessel walls by inflammation. Approximately half of vasculitis cases are idiopathic, but sometimes associated with genetic factors, medicines, chronic infection, autoimmune diseases, and malignancies. Although the mechanism remains unclear, vasculitis secondary to malignancy, also known as paraneoplastic vasculitis, has been reported. It is generally associated with hematologic malignancies rather than solid malignancies and commonly presents as leukocytoclastic vasculitis or polyarteritis nodosa. We experienced a case of leukocytoclastic vasculitis in a patient with hepatocellular carcinoma and membranous obstruction of the inferior vena cava. Here, we report this case with a brief review of literature. (J Rheum Dis 2015;22:322-326)

交叉路의 遲滯時間을 利用한 交通配分模型에 關한 硏究

이주환,김대웅 嶺南大學校 工業技術硏究所 1997 工業技術硏究所論文集 Vol.25 No.2

This study surveyed the efficiency of network method for traffic assignment by using delay time as link performance function resulted from KHCM and Webster. The results of this study can be summarized as follows. The existing traffic assignment models used daily OD data to forecasting future segment volumes. For that reason in this study converts daily OD data into peak hour OD data based on person trip survey, and applies to traffic assignment. The algorithm for finding the minimum path is programed to calculate efficiently the existing minimum path. And then, using this, estimates segment volumes and compares these with current volumes by five link performance functions and assignment model of PATS. As a result, suitability of link performance functions are presented in order to delay of KHCM, Webster's delay, BPR formula of USA, BPR formula of Korea, Q-V curve. So link performance function for traffic assignment, using the delay time at intersection of KHCM or Webster is available.

T1급 고속 암호 시스템에 관한 연구

이훈재,류명춘,오주환 경운대학교 산업기술연구소 1998 産業技術硏究論文誌 Vol.1 No.1(A)

In this paper we propose a secure T1-rate digital image conference system which consists a stream cipher of 7-bit real adder with 2 bit carrys and a fast and stable 2-step full-duplex synchronization. And we analyze the cipher algorithm and the synchronization performance of the system.

Sodium Trans-Bis(methyliminodiacetato)Chromate(Ⅲ)의 두가지 다른 空間群 P1￣와 A2/n間의 相互 變換

李珍昊,宋柱昊,崔成山,郭相姬,吳美蘭,박성진,李揆旺,徐廷善,徐日煥 충남대학교 1996 忠南科學硏究誌 Vol.23 No.1

The structure of sodium trans-bis(methyliminodiacetato) chromate(Ⅲ), C_10H_14O_8N_2CrNa, has been elucidated with two space groups P 1-; a=8.9856(6), b=13.308(1), c=6.261(1)Å, α=76.38(1), β=110.361(9), r=107.394(6)˚, V=662(2)Å^3, Z=2, μ=0.47mn^(-1), d=1.831Mg/㎥, R=0.0295 for 1901 independent reflections with F^2>2σ(F^2), and A2/n; a=13.65(5), b=6.261(1), c=16.85(6)Å, β=113.05(1)˚, V=1324(7)Å^3, Z=4, R=0.0287 for 1013 independent reflections with F^2>2σ(F^2). There are two different asymmetric half molecules in triclinic system and one asymmetric half molecule in monoclinic system. The structures of three different molecules are very similar in conformations. The four carboxyl O atoms and the two imino N atoms in each molecule produce a distorted octahedral coordination geometry around the Cr atom. The average distances of Cr-O(carboxyl) and Cr-N(imino) are 1.956 and 2.061Å respectively. Molecules are held together by ionic forces. In this paper, it has been also shown that the cell constants, Miller indices, atomic coordinates, lattice directions and reciprocal lattices of the two space groups can be mutually transformed.

정서지능 : 개념의 소개 및 연구 전망 Its Conceptualization and Research Perspectives

이주일,민경환 서울大學校 社會科學大學 心理科學硏究所 1996 心理科學 Vol.5 No.1

본 연구는 최근 정서 개념에 관한 관심이 고조되는 상황에서 정서지능의 개념과 차원에 대한 고찰을 비롯하여 관련 연구들을 개관하고, 정서지능을 구성하고 있는 요소들 각각의 의미와 중요성을 살펴봄으로써 정서지능과 조직 행동 간의 관계성 규명을 위한 연구의 필요성을 제시하는 것에 그 목적을 두고 있다. 이를 위해 Mayer, Hsee 그리고 Salovey(1993) 등이 주장한 정서지능의 구성 요소들을 살펴 보고, 정서지능의 측정 방법에 관한 논의들에 대한 고찰과 더불어 구체적인 측정 방법의 일례로서 Goleman(1995)의 정의에 입각한 측정 도구의 내용을 제시하였다. 또한 정서지능이 개인의 일상 생활에 미치는 영향과 중요성 및 활용 가능성에 대한 연구들을 언급하고 그러한 연구들의 제한점을 발달, 개념 및 구성차원의 측면에서 고려해 보았다. 마지막으로 정서지능 개념의 정교화, 발달적 조망, 조직 행동과의 관련성 등의 문제에 대한 심리학적 연구의 필요성과 그 잠재적 중요성을 전망하였다.ABSTRACTThe purpose of this study was to emphasize the need for research to investigate the relationship between emotional intelligence and organizational behavior. Studies pertaining to conceptualizations and dimensions of emotional intelligence were reviewed to investigate significantly related factors, as proposed by Mayer, Hsee, and Salovey(1993), and the implications thereof. Furthermore, a discussion of measurement methods is presented, using as a specific example a scale based on Goleman' s(1995) definition. The overview of the studies concerning the implications and applications of emotional intelligence on the individual' s daily life is provided as well as their limitations in terms of developmental, conceptual, and constructive perspective. Finally, this study proposed the need for psychological research on elaborating the concept of emotional intelligence, its developmental implications, and its relationship with organizational behavior.

고속 승산기 알고리즘에 관한 연구

이훈재,오주환 경운대학교 산업기술연구소 2001 産業技術硏究論文誌 Vol.3 No.2(B)

Public-key cryptosystems carry out the modular exponentiation of large integer for security, and modular exponentiation is presented by the serial of the modular multiplication. This thesis presents the classical multiplication method, Montgomery algorithm, Yang algorithm to implement high-speed multiplication above 512-bit.]

가변적 검사과오를 고려한 계수 1회 선별형샘플링검사에 관한 연구 : 검사과오나 로트불량률이 베타분포를 따를 경우

李相卜,辛周桓,朴永宅 成均館大學校 科學技術硏究所 1989 論文集 Vol.40 No.1

It has been generally assumed in classical sampling inspection plans that the inspection of an item is perfect. However, ergonomic studies show that human errors in inspection tasks are not negligible. Recently, sampling inspection plans under inspection error have been treated extensively in the literature. But, most of them have assumed that inspection errors and lot percent defective are constant. In this study, we removed the rather unrealistic assumption. Assuming that one of the type 1 or type 2 inspection error, lot percent defective follows Beta distribution, W e compute some sampling inspection characteristics such as probability of lot acceptance, average total inspection, and average outgoing quality; and compare them with the results of previous studies.

집단 따돌림 피해학생을 대상으로 한 인지행동적 집단치료 개발을 위한 예비 연구

이주현,신지용,연병길,한창환 대한소아청소년정신의학회 2000 소아청소년정신의학 Vol.11 No.2

본 연구는 집단 따돌림 피해학생을 대상으로 시행한 인지행동적 집단치료의 개발을 위한 예비 연구이다. 정상적인 중학교 1학년 학생 202명에게 도덕발달수준척도, 오퍼 자아상척도, 우울 및 상태ㆍ특성불안척도의 분포와 상관관계를 조사하였다. 자아상과 우울, 불안은 서로 강한 상관관계를 보였으나, 도덕발달과는 상관관계를 보이지 않았다. 이는 도덕발달이 정서에 크게 영향받지 않고 인지 발달적 과정에 의존하는 것을 시사한다. 그리고 교사의 관찰에 의해 집단 따돌림 피해를 받으면서 학교 적용에 어려움을 보이는 중학교 1학년 학생 5명의 도덕발달수준척도, 오퍼 자아상척도, 우울 및 상태ㆍ특성불안척도는 전체 집단과 유의한 차이를 보이지 않았다. 이 피해학생들을 대상으로 12회에 걸쳐 인지적 집단 정신치료를 시행하고, 치료 전후에 상기 4가지 척도의 변화를 평가하여 효용성을 검정하였으나 통계학적으로 유의한 변화는 없었다. 그러나 참가 학생들이 치료 기간 중에 기재한 일기에서 확인되는 심리적 마음자세(psychological mindedness)의 향상과 담임 교사의 긍정적인 평가보고는 의미있는 것으로 생각되었다. 중심 단어 : 집단 따돌림ㆍ인지행동적 집단치료ㆍ청소년ㆍ자아상ㆍ도덕발달ㆍ우울ㆍ불안 Bullying is the intentional, unprovoked abuse of power by one or more children to inflict pain on or cause distress to another child on repented occasions. Bullying can be considered to be a form of child abuse : peer abuse. Victims suffer adverse effects in the short and long term. If bullying is regarded as a form of abuse then professionals have a duty to detect it, take it seriously, and ensure that it is deal with to reduce the child's suffering and minimize the potential long term effects. This study is aimed preliminarily the development of cognitive behavioral group therapy for school bullied. 202 normal middle school freshman responded to self report scales-Offer's Self-Image Questionnaire-Revised, Children's Depression Inventory, Spielberger State/Trait Anxiety scale, and Defining Issues Test. The data were analyzed with Pearson's correlation to test the relationship among the above 4 variables. Self Image, depression, and anxiety were correlated strongly each other. But moral development was not correlated with self image, depression, and anxiety. Five school bullied students were referred by their teacher for school maladjustment. The author tried 12 sessions of Cognitive-Behavioral group therapy and assessed their behaviors pre- and post intervention by above 4 scales. There were no significant different intervention effects statistically. But It is meaningful that improvement of psychological mindedness in diary written by subject in treatment sessions KEY WORDS : School bullyingㆍCognitive-behavioral group therapyㆍAdolescentㆍSelf imageㆍMoral developmentㆍDepressionㆍAnxiety

配分交通量 豫測時 Link 走行時間設定에 關한 硏究

李周桓,金度坤,金大雄 嶺南大學校 工業技術硏究所 1998 工業技術硏究所論文集 Vol.26 No.2

Judging form the results of estimating segment volumes, the applicability more differs with how link performance functions are set up rather than which traffic assignment model is used So, the purpose of this study is to establish link performance functions which fit the current transportation network in our country. The result of this study can be summarized as follows; ●Estimated parameter by total lane is α=2.0, β=2.76, but R ²=0.55. Estimated parameter by each lane is that R ²is over 90.0%. So, it is reasonable what Parameter of BPR function is used with each lane. ●When the traffic assignment, if BPR function is used as performance function must apply to each road type.