팔당호 식물플랑크톤의 제한영양염과 성장률의 경시적 변화

최광현 ( Choi Gwang Hyeon ),황순진 ( Hwang Sun Jin ),김호섭 ( Kim Ho Seob ),한명수 ( Han Myeong Su ) 한국하천호수학회 2003 생태와 환경 Vol.36 No.2

This study was conducted to determine limiting nutrients and the physiological characteristics of phytoplankton in response of nutrients in Lake Paldang from March 2002 to October 2002. A field research was conducted along with laboratory batch culture experiment to find the limiting nutrients and the growth kinetics. According to the results of Chl. α-TP relationship, TN/TP ratio, ad nutrient addition bioassay, phosphorus appeared to be a major limiting nutrient in Lake Paldang and thus the lake productivity was greatly influenced by it. P limitation for the phytoplankton of Lake Paldang varied with season, and the possibility of limitation by nitrogen and silica also occurred. The degree of P limitation was greatest during spring when the concentration of dissolved phosphorus is relatively much lower than summer and autumn. The maximum growth rate (μ_max) and half saturation concentration (K_u) of Lake Paldang phytoplankton ranged from 0.8~1.1 day^-1 and from 0.1~0.8 μM, respectively. K_u was highest during May (0.8μM) and the lowest during September (0.1μM). Such result may be induced by the phytoplankton cell quota that showed the lowest concentration (0.13μgP/μgChl. α) during May. The growth kinetics showed that phytoplankton growth in Lake Paldang was faster during summer and autumn than spring, suggesting that the potential of algal bloom is high after the summer monsoon season.

간동맥화학색전술 후 발생한 기종성 담낭염 및 담도 기종 1예

최광현 ( Gwang Hyeon Choi ),윤다림 ( Da Lim Yoon ),이재광 ( Jae Kwang Lee ),이승훈 ( Seung Hoon Lee ),진영주 ( Young Joo Jin ),박도현 ( Do Hyun Park ),심주현 ( Ju Hyun Shim ) 대한내과학회 2012 대한내과학회지 Vol.83 No.6

Transarterial chemoembolization (TACE) is reportedly a useful palliative treatment in patients with unresectable or recurred hepatocellular carcinoma. Post-TACE complications are common; however, acute cholecystitis after TACE is rare. We herein report a case of a 73-year-old woman who presented with emphysematous cholecystitis and pneumobilia following TACE. Computed tomography performed for evaluation of her tumor status before TACE incidentally showed gallbladder and common bile duct stones. After TACE, she complained of severe epigastric pain with a positive Murphy`s sign. Computed tomography showed emphysematous cholecystitis and pneumobilia. She was successfully treated with emergent biliary stone removal by endoscopic retrograde cholangiopancreatography. (Korean J Med 2012;83:764-770)

인형심리진단평가에 나타난 중년여성의 부부관계 경험 연구 : 부부관계 투사를 중심으로

최정임(Choi, Jeong-im),최광현(Choi, Gwang-hyeon) 한국인형치료학회 2020 인형치료연구 Vol.6 No.2

본 연구의 목적은 인형심리진단평가를 활용하여 중년여성의 부부관계 및 투사 경험을 자기인식, 타인인식, 가족관계 측면에서 심층적으로 이해하는 데 있다. 이를 위해 25년 이상의 결혼기간을 거친 50대의 중년여성 4명을 대상으로 자료를 수집하였다. 수집된 자료에 대해 질적 사례분석 방법을 적용하여 분석한 결과 자기인식에서는 참여자들의 방어와 생존, 긍정적 소망, 독립, 강함, 부정적 소망, 약함과 의존, 공격 순으로 도출되었다. 타인인식에서는 대부분의 참여자가 수(數) 상징체계 2로 표현되었으며, 이는 이분법적 원칙, 현실의 문제에 압도당하는 갈등과 분열을 일으키는 혼란스러움을 겪고 있으며 심리 내면에는 균형과 조화를 이루고자 하는 소망을 드러냈다. 한편 가족관계에서는 ‘목적지향향’과 ‘분열형’, ‘세대단절형’과 ‘부친고립형’, ‘밀착형’과 ‘이산형’, ‘균형형’ 등 다양한 가족체계로 드러났다. 연구 참여자들과 그들의 배우자들은 자신의 원 가족과의 미해결 문제를 얼마나 가지고 있는가가 새로운 부부관계를 만들어가는 과정에 큰 영향을 받는 것을 알 수 있었다. 본 연구를 통하여 연구 참여자들은 부부문제의 원인을 배우자에서 찾았던 것으로부터 자신에게도 있음을 통찰하였다. 그리고 가족과 부부관계의 상호작용을 개선하고 가족 간의 화합과 균형을 이루기를 소망하는 것으로 나타났다. 본 연구 결과를 통해 중년여성의 자기 및 부부관계 경험에 대해 심층적으로 이해하고 인형심리진단평가의 유용성을 입증함으로써, 상담 및 치료 현장의 개입 도구를 더 확장하는데 연구의 의의가 있다. The purposes of this study are to examine middle-aged women’s couple projection experiences in self-awareness, awareness of others, and family relationships with the figure-based psychological diagnostic evaluation and in-depth interviews and understand common meanings among them. For these purposes, the study administered the figure-based psychological diagnostic evaluation with four middle-aged women in their fifties that had been married for 25 years or longer. The analysis results show that the subjects displayed defense and survival most in self-awareness, and they were followed by positive wish, independence, strong, negative wish, weak and dependent, and aggression in the order. In awareness of others, most of the participants were expressed in 2, a numeric symbolic system, which shows that they were undergoing confusion causing conflicts and disruptions overwhelmed by the dichotomous principle and real issues and wished to achieve balance and harmony inside their psychology. In family relationships, they exhibited a variety of family systems including “goal-oriented” and “disrupted”, “generational gap” and “isolation of the father”, “adhered” and “separated”, and “balanced”. The participants and their spouses were under the huge influence of their unresolved issues with their primary families in the process of forming new couple relationships. The present study helped the participants have an insight that they were looking for the cause of their couple issues in their spouses and also responsible for their couple issues. In addition, they wished to improve interactions in family and couple relationships and have harmony and balance in their families. Through the results of this study, it is meaningful to further expand intervention tools in the field of counseling and treatment by in-depth understanding of middle-aged women’s experiences of self- and marital relations, and by proving the usefulness of the puppet psychological diagnosis evaluation.

증례 : 횡문근융해를 동반한 Mycoplasma Pneumoniae 중증 폐렴 1예

고광범 ( Gwang Beom Koh ),박기호 ( Ki Ho Park ),최상호 ( Sang Ho Choi ),최광현 ( Gwang Hyeon Choi ),강지훈 ( Ji Hoon Kang ),강종식 ( Jong Sik Kang ),고윤석 ( Youn Suck Koh ) 대한내과학회 2012 대한내과학회지 Vol.83 No.3

Mycoplasma pneumoniae는 대부분 경한 폐렴을 일으키며 폐외 증상으로 횡문근융해를 동반하는 경우는 매우 드물다. 저자들은 횡문근융해를 동반한 중증 마이코플라즈마 폐렴을 경험하였기에 문헌고찰과 함께 보고하는 바이다. Mycoplasma pneumoniae is a common cause of respiratory tract infections and typically causes mild disease. Extrapulmonary manifestations of M. pneumoniae infection are also common, but rhabdomyolysis is a rare complication. Here, we describe the case of a previously healthy 23-year-old male who displayed the simultaneous onset of rhabdomyolysis and severe pneumonia requiring mechanical ventilation. Both conditions were resolved by a 10-day course of antimicrobial treatment and the patient was discharged without complication.

정밀합성법에 의한 마이크로스트립 대역통과 필터의 소형화에 관한 연구

최홍주,김경호,신성현,최광제,허정,Choi, Hong-Ju,Kim, Kyung-Ho,Shin, Seong-Hyeon,Choe, Gwang-Je,Hur, Jung 한국전자파학회 1997 한국전자파학회논문지 Vol.8 No.5

본 논분은 정밀합성법에 의한 마이크로스트립 필터의 소형화를 다루고 있다. 정밀합성법을 이용하면 물리적 구현이 가능하면서 완전히 새로운 회로를 개별적인 소자들의 조합으로 설계할 수 있다. 복잡한 회로망 합성은 컴퓨터 소프트웨어를 이용하여 쉽게 처리한다. 이것은 최소의 소자를 사용하여 최적의 회로망을 구현할 수 있는 새로운 설계 절차이다. 정밀합성법을 이용하면 50-100 %의 대역폭을 갖는 광대역 필터의 설계가 가능하다 대역 동과 S 평면 프로토타입은 원하는 주파수에서 전송영점을 갖는 비리던던트(non-redundant) 펼터 합성법에 의해 만들이진다. 저지대역 중심주파수에서 $\lambda$/4 감이인 전송선로를 사용하기 때문에 필터의 면적을 크게 줄일 수 있게된다. We described a miniaturization of microstrip filters by the exact synthesis. With the exact synthesis, we can design completely new circuits physically realizable. The complex procedure for the network synthesis could be reduced by using computer software. It is a new design procedure ensuring the creation of optimum networks which have minimum number of elements. The exact synthesis gives more possibilities to make wideband filters which require bandwidth of 50~100 %. S-plane Bandpass prototypes are made with non-redundant filter synthesis technique that has transmission zero locations at required frequencies. Because this method uses the transmission lines which lengths are ${\lambda}$/4 at the stopband center frequency, we can reduce the size of the filter dramatically.

희생양 역할을 한 중년여성의 인형 가족세우기 현상학적 연구

김경숙(Kim Gyeong-suk),최광현(Choi, Gwang-hyeon) 한국인형치료학회 2021 인형치료연구 Vol.7 No.1

본 연구의 목적은 가족 희생양 역할을 한 중년여성의 인형 가족세우기 경험을 심층적으로 이해하고 기술하는 데 있다. 이를 위해 희생양 경험을 한 만 40∼59세의 중년여성 5명을 대상으로 인형 가족세우기를 진행하였다. 심층 면담을 통해 자료를 수집했으며, Giorgi의 현상학적 연구방법을 적용하여 자료를 분석하였다. 연구결과 가족희생양 역할을 한 중년여성의 인형 가족세우기 경험의 공통적, 본질적 의미를 다음의 6개 첫째, ‘윗세대와의 얽힘의 결과인 희생양 역할을 인식함’, 둘째, ‘가족의 숨겨진 역동을 온 몸으로 느낌’, 셋째, ‘무의식적 얽힘을 풀면서 제자리를 찾아감’, 넷째, ‘가족의 책임감 덩어리로부터 벗어나면서 카타르시스를 경험함’, 다섯째, ‘존중과 감사를 표함으로써 윗세대와의 연결감을 회복함’, 여섯째, ‘삶의 후반전에서 새로운 이야기를 쓰기 시작함’ 등으로 도출하였다. 본 연구의 의의는 인형 상징체계를 활용한 가족세우기를 통해 가족희생양 역할을 한 중년 여성의 미해결된 심리적 갈등과 가족 역동을 살펴보았다는 점에 그 의의가 있으며, 인형 가족세우기의 치료적 가치와 적용 가능성을 경험적으로 드러냈었다는 점이다. The purpose of this study is to thoroughly understand and describe family-scapegoated middle-aged women’s experience of family constellation therapy using figures. To this end, family constellation therapy using figures was given to five family scapegoated middle-aged women aged between 40 and 59. Data was collected through in-depth interviews and analyzed using Giorgi’s phenomenological research method. As a result, the following six common and essential meanings of their experience of family constellation therapy were derived: First, recognizing the role of scapegoat, which resulted from entanglements with the older generation. Second, feeling the hidden dynamics of the family with their whole body. Third, finding their own place while unlocking unconscious entanglements. Fourth, experiencing a catharsis while unloading their responsibility from the family. Fifth, regaining the sense of connection with the older generation by expressing respect and gratitude. Sixth, starting a new chapter in the second half of life. This study has significance in exploring the unresolved psychological conflicts of family-scapegoated middle-aged women and family dynamics through family constellations using figures and empirically revealing the therapeutic value and applicability of the figure therapy.

스마트 공기청정기 개발

최동아(Dong-Ah Choi),주현민(Hyun Min Joo),최영진(Young-Jin Choi),최광현(Gwang Hyeon Choi),노송연(Song Hyun No),서영상(Young Sang Seo),방준호 대한전기학회 2016 대한전기학회 학술대회 논문집 Vol.2016 No.10

증례 : Methimazole 복용 후 발생한 간부전으로 간이식을 시행 받은 1예

전성진 ( Sung Jin Jeon ),김태용 ( Tae Yong Kim ),이승훈 ( Seung Hoon Lee ),강종식 ( Jong Sik Kang ),최광현 ( Gwang Hyeon Choi ),이승규 ( Seung Gyu Lee ),황희상 ( Hee Sang Hwang ) 대한내과학회 2012 대한내과학회지 Vol.83 No.3

최근 가이드라인을 보면 PTU의 간독성 부작용과 관련하여 갑상선기능항진 증 치료로 메티마졸을 사용하도록 권장하고 있다. 그러나 매우 드물지만 메티마졸에 의해서 간독성이 발생할 수 있고, 본 증례처럼 간이식이 필요할 정도로 심각한간부전을 일으킬 수도 있다. 저자들은 60세 남자 환자가 메티마졸을 복용한 후 간부전이 발생하여 간이식을 시행한 증례를 경험하였기에 문헌고찰과 함께 보고하였다. Antithyroid drugs inhibit the synthesis and excretion of thyroid hormone from the thyroid gland. Propylthiouracil (PTU) and methimazole are well known as antithyroid drugs. In 2011, the American Thyroid Association and American Association of Clinical Endocrinologists published management guidelines for hyperthyroidism and other causes of thyrotoxicosis, and recommended methimazole as the first-choice antithyroid drug for the treatment of hyperthyroidism. Lower hepatotoxicity is an advantage of methimazole. Fulminant hepatitis rarely occurs in methimazole users, and spontaneous recovery is expected even if it does occur. We describe a rare case of acute liver failure after methimazole intake in a 60-year-old man who underwent liver transplantation.

超分節音素의 分析方法에 對한 一考察

崔光鉉 全北大學校 語學硏究所 1980 어학 Vol.7 No.-

管理會計에서의 專門家시스템 利用에 관한 硏究

최광현 경일대학교 산업정보연구소 1991 産經硏究 Vol.2 No.1

Expert systems have received a great deal of attention in the accounting and business fields recently. This study was undertaken to see if worthwhile applications exit in management accounting. Because the field is so new, the study is descriptive, and its conclusions are in the form of observations rather than generalizing about the use of expert systems in management accounting. In pursuing the study, I approached two firms to see the applicability of expert systems to management accounting. My objective was to develop an expert system to evaluate budget variances in these firms and to describe the problems and results of developing the expert system. I also wanted to determeine other areas where expert systems might be worthwhile in management accounting.