병렬 구동 매니퓰레이터의 외란 및 속도 추정을 이용한 정밀 위치 제어

최용훈,심재홍,권동수,조형석 제어로봇시스템학회 1997 제어로봇시스템학회 국내학술대회 논문집 Vol.2 No.10

The Zoo Story에 드러난 인간관계의 양상

崔容勛 한국현대영미어문학회 2001 The Journal of KACELLS Vol.6 No.1

In the tradition of American drama, Edward Albee has taken a specific place as one of the most competent and intelligent playwrights. Throughout his long career, he has attracted much attention from the audience and critics alike. But his success as a major dramatist was never attained by accident but a natural product of his early interest in writing novels and poems. Albee's early plays are closely related to his individual life. His departure from literary convention and his temperament as a bum have much to do with a tragic situation in which he was placed as a deserted child. Though adopted by a rich family, he couldn't escape from his spiritual wandering and agony. In particular, he was the very picture of criticism against the corrupted bourgeois society. As shown in his careers, his life, in essence, is the continuation of wandering. Roaming along the streets of New York, he saw a lot of people from almost all walks of life. Their lives and expreriences are deeply embedded in his early plays. Particularly noteworthy is the fact that six of his nine early plays are about 'a deserted child' and 'a permanent transient.' In The Zoo Story, Albee touchingly describes a social outcast isolated from other people and the world. The two characters, Jerry and Peter, are the ordinary people we come across on the streets. But they are also the allegory of fundamental human loneliness and alienation regardless of time and place. In Jerry and Peter, we can find the image of ourselves in a modern society. This paper aims to analyze the aspects of human relations as suggested in The Zoo Story. For this, it deals with the four main categories of human relations; the absence of communication, sexual obssession, animalistic nature, and physical contacts and violence. All these concepts have constituted the philosophical background of Albee's plays. His main concern was to suggest a more univeral human situation and a dilemma facing a contemporary society. In The Zoo Story, Albee shows how human relations are distorted and how eager we have been to get out of human isolation and alienation. But he is never a pessimist. By giving religious implications to Jerry's death, Albee suggests the possibility of change in distorted human relations. While caputring the dark side of human relations and the contemporary society, the playwright also talks about new hope and optimism.

비강우시 도시 합류식 하수도의 오염부하 산정을 위한 최적관측시간 산정연구

최용훈,원철희,박운지,서지연,신민환,이찬기,최중대,Choi, Yong-Hun,Won, Chul-Hee,Park, Woon-Ji,Seo, Ji-Yeon,Shin, Min-Hwan,Lee, Chan-Ki,Choi, Joong-Dae 한국농공학회 2009 한국농공학회논문집 Vol.51 No.3

Flow and pollution load were monitored at 2 combined sewer outlets (C-1 and C-2) of urban watersheds during dry weather from September, 2004 to April, 2006 for 20 months. The objectives were to investigate the diurnal variation of flow and pollutant load and to find the proper sampling time that could measure representative flow and pollutant load. Pollution load closed to the average daily load at C-1 could be measured at 00:00 hour and by the mean of 15:00 and 18:00 hour measures, and 15:00 and 21:00 hour measures, respectively. In addition at C-2, it was 21:00 hour and the mean of 15:00 and 18:00 hour measures. This study concluded that arbitrary sampling of flow and water quality could cause large errors in the estimation of urban pollution load and recommended that urban combined sewers should be monitored when flow and water quality showed daily average and concentration.

The Homecoming에 드러난 不條理的 人間相과 역할의 전환

崔容勳 明知大學校 人文大學 英語英文學科 1994 Veritas Vol.- No.7

독후활동으로써 북트레일러의 효과 연구

최용훈,조현양 한국문헌정보학회 2015 한국문헌정보학회지 Vol.49 No.3

This research aims at executing a after reading activity using book trailers for the teenagers, and verifying its effects. For the investigation into its effectiveness, 6 classes on the first grade in a middle school were divided into 3 classes of an experimental group (104 students) and the other 3 classes of a comparative group (100 students), and a preliminary and a post test were conducted using the measurement tool on creativity and reading attitudes. As the result, the creativity, reading attitudes and understanding of the selected books of the experimental group were found to be better than those of the comparative group. 이 연구는 활자와 인쇄매체보다 영상과 음향매체 그리고 다양한 멀티미디어 기기에 익숙한 다매체세대인 청소년을 대상으로 북트레일러를 활용한 독후활동 프로그램을 실행하여 그 효과를 검증하는데 목적이 있다. 효과를 검증하기 위해 중학교 1학년 6학급을 실험집단 3학급(104명)과 비교집단 3학급(100명)으로 설정하여 창의성과 독서태도 측정도구를 활용하여 사전․사후검사를 실시하였다. 공분산분석(ANCOVA)을 통하여 발달정도를 측정하였으며, 선정도서의 독서퀴즈 문제를 활용하여 집단 간 선정도서에 대한 이해도 차이를 분석하였다. 연구 결과 북트레일러를 활용한 독후활동 프로그램을 적용한 실험집단의 창의성과 독서태도, 선정도서에 대한 이해도가 비교집단보다 높은 것으로 나타났다.

강우 자료와 밭작물 물관리 지침서를 이용한 노지 밭작물의 관개 필요량 산정 연구

최용훈,김영진,김용원,김민영,전종길 한국농공학회 2019 한국농공학회논문집 Vol.61 No.1

The purpose of this study is to determine the amount of irrigation water for upland crop growth based on the 30 year of historical rainfall data andthe water management guidelines as a reference. Five regions and ten crops were selected by their cultivation size. The changes of soil moisture contentswere calculated using daily mean rainfall and irrigation demand. This study assumed that crops are irrigated when the soil moisture contents fell belowof the field capacity for more than 5 days, which is the drought condition defined by RDA. The maximum irrigation water requirements was 167.2mm for chinese cabbage during the growing season, which was followed by corn (112.0 mm), daikon (102.3 mm), spinach (66.1 mm), lettuce (56.7mm), pepper (46.5 mm), potato (33.9 mm), sweet tomato (27.4 mm), peanut (11.5 mm) and bean (10.3 mm), The results of this study could contributeto providing valuable data to determine the capacity of irrigation facilities and to establish the emergency operation plans under extreme unfavorableweather condition (heat wave, etc.) for crop growth.

의도적 재식술을 위한 비외상성 안전 발치법

최용훈,배지현,김영균 대한치과의사협회 2010 대한치과의사협회지 Vol.48 No.7

Intentional replantation is useful for failed cases of conventional dental treatment - including root canal treatment - to restore the tooth in question. Based on a recent study, it is relatively very successful; prognosis is good for a long period. On the other hand, a tooth that becomes an indication of intentional replantation is often severely weakened throughout several treatments. Moreover, with multi-rooted teeth, extracting without root fracture is difficult. Safe extraction that is free of coronal or root fracture is important, but little information is known as to a concrete, safe way of extraction. There are a few considerations for safe extraction. First, a tooth with orthodontic extrusion force is easier for extraction due to its increased mobility; it increases the amount of the periodontal ligament, which is essential for re-attachment. As a safe way of extraction, the use of physics forceps®has been introduced recently; it minimizes damage to the gingiva and alveolar bone. This paper reports the good result of using atraumatic safe extraction via both orthodontic extrusion and physics forceps®. 의도적 재식술은 근관치료를 포함한 통상적인 치과치료가 실패한 경우 치아를 유지하기 위해 마지막으로시도되는 방법으로서 발거한 치아를 구강외에서 치료한 후 재식립하는 치료이다1). 의도적 재식률의 성공률은 연구자에 따라 다르지만 비교적 재현성 있는 높은성공률이 보고되고 있다2~4). 많은 저자들이 성공적인의도적 재식술을 위해서 치아의 파절 없이 안전하게발치하는 것을 최우선으로 강조하고 있다1,2, 4~6). 그러나 의도적 재식술이 필요한 치아들은 이전의 반복적인근관치료를 받은 경우가 많으며 그로 인해 남아있는치질의 강도가 낮은 경우가 많다6,7). 또한 근관치료의빈도가 높은 구치부 치아의 경우 치근면이 넓어 발치에 많은 힘이 필요하며 치근이 서로 벌어져 있어 파절없이 발치하기가 매우 힘든 것이 사실이다8). 통상적으로 안전한 발치를 위해 추천되는 방법으로는 elevator 의 사용을 피할 것을 추천하고 있으며scalpel 을 사용하여 치주 인대를 미리 절제해 주는방법도 유용한 것으로 알려져 있다. 발치 겸자를 사용하는 경우에는 치근면의 치주인대를 보호하기 위하여 발치 겸자는 치은 상방에 위치하여야 한다고 추천된다5). 그러나 임상적으로 치근면을 잡지 않고 발치하는 것은매우 어려우며 치관 부위만을 잡을 경우 치아 파절의가능성도 높아진다. 또한 발치를 위해 치근면을 잡게되면 치아는 파절없이 발거할 수 있으나 치유에 핵심적인 영향을 미치는 치주인대를 손상시키게 되는 단점이 있다9). 근관치료를 받은 치아들은 치질의 손상으로인해 구조적으로 약한 상태이므로 기존의 발치겸자를쓰다보면 치아 자체의 파절이 일어날 가능성이 있다7). 그리고 기존의 발치겸자는 구조상 더 큰힘을 가할수록치근단쪽으로 미끄러지게 되어 있어 치주인대의 손상을 피할 수 없는 단점이 있다(Fig. 1a). 또한 치아파절을 방지하기 위해 치근을 잡는 경우 치주인대의 손상과 함께 주변 치은 및 치조골의 손상을 일으키게 되어 일차 접합 (primary closure)가 어렵게 되는 단점도 있다(Fig. 1b). Hayashi 등10)(2006)은 자가치아이식에서 교정적정출술을 이용함으로써 발치의 용이성과 빠른 고정력등을 얻게 된다고 보고하였으며 Misch 등11)(2008)은제1형 지렛대 원리를 이용한 발치겸자를 고안하였는데 이는 발치후 즉시 임프란트 식립시 치은 및 치조골을 포함한 주변 치주조직의 손상을 최소화하고자 개발한 것이다. 따라서 의도적 재식술에서 목적과 정확히일치한다고 볼 수 있다(Fig. 2). 본 문헌에서는 의도적 재식술시 이 두가지 방법을이용하여 치근의 파절을 일으키지 않고 안전하게 발치할 수 있는‘비외상성 안전 발치법(atraumatic safe extraction)’을 소개하고자 한다.

Implementation of Polyacrylamide in the Agricultural Environment and its Recent Review

최용훈,김민영,김영진,전종길,서명철 한국토양비료학회 2016 한국토양비료학회지 Vol.50 No.4

Nonpoint sources of pollution (NPS) is defined as diffuse discharges of pollutants (e.g., nutrient, pesticide, sediment, and enteric microorganism) throughout the natural environment and they are associated with a variety of farming practices. Previous studies found that water soluble anionic polyacrylamide (PAM) is one of the highly effective measures for enhancing infiltration, reducing runoff, preventing erosion, controlling nonpoint source of pollutants, and eventually protecting soil and water environment. Potential benefits of PAM treatment in agricultural soil and water environments have been revealed by many research and they include low cost, easy and quick application, and suitability for use with other Best Management Practices (BMPs) for NPS control. This study reviews the various applications of PAM and discusses its further potentials in agricultural environment.

모험기업의 라이프 싸이클 단계별 재무전략

김재명,오정화,손재영,최용훈 강원대학교 석재복합신소재제품연구센터 1997 석재연 논문집 Vol.2 No.-

본 논문은 신제품의 사업화와 관련한 모험기업의 라이프 싸이클 단계별 재무전략, 특히 자금조달 전략에 관해 연구하였다. 특히 금융상품의 유형과 특성을 자본원천별로 분석하고, 이에 기초하여 모험기업의 성장단계별 자금조달전략을 제시하였다. 본 논문은 라이프싸이클을 4단계로 나누고, 각 단계별 재무특성과 자금원천의 특성을 고려하여 라이프싸이클 단계별 자금조달원천 행렬표를 제시하였다. 이에 따르면 모험기업은 라이프싸이클 단계별로 개인저축, 에인젤, 모험자본, 동업자, 기업공개, 그리고 잉여금 등의 지분자본원천과 회사채, 거래신용, 자산기초금융, 은행이나 보험회사 차입, 그리고 정책지원자금 등 부채자본원천을 중첩하여 자본조달원천으로 사용할 수 있음을 보여주고 있다. This paper discusses the relationships between stage of development in venture business life cycles and financial strategies. The paper selectively examines the study by reviewing the characteristics of the various finacial instruments on the basis of the cash flows of venture business life cycles. I suggested the source of capital matrix combining the various sources of capital. At each stage, the venture businessess should raise the funds by using the various combinations of sources of equity financing and debt financing.

인터넷상의 전화서비스를 위한 패킷손실특성 분석

고대식,최용훈 牧園大學校 1998 論文集 - 牧園大學校 Vol.35 No.-

The main problems of real-time phone service over Internet are packet losses, such as packet loss, delay and out of order packet. Therefore, packet loss recovery is one of th core techniques in real-time services over the Internet and packet loss characteristic is very important for developing recovery methods. In this paper, RTPing is designed for measuring packet loss characteristics, and the relation between packet size and loss were measured and analyzed by using RTPing. In experimental results using Internal education network and various traffic loads, it has been shown that RTPing is used as a efficient network simulator and packet loss is up to 23%.