직물의 열 쾌적성에 관한 고찰

홍연숙 제주한라대학 1990 論文集 Vol.14 No.-

The purpose of this study was to review recent work carried out in comfort related areas. It is obvious that comfort involves a complex combination of properties to physical, physiological, and psychological aspects. Thermal comfort has been defined by the American Society of Heating, Refrigeration, and Air Conditioning Engineers (ASHRAE) as "that condition of mind which expresses satisfaction with the thermal environment." Studies have indicated that a person's intellectual, manual, and perceptual performance is in general highest when he is in thermal comfort. The variables which influnce the condition of thermal comfort have been identified by Fanger as air temperature, mean radiant temperature, relative air velocity, water vapor pressure in the ambient air, activity level (heat production), and thermal resistance of clothing. Thermal comfort can be achived by many different combinations of these variables. Thermal insulation of clothing is comprised of the insulation of the fabrics and that of the layers of air trapped between them and between the inner layer and the skin. The effects of clothing on thermal comfort depends mainly on such factors as physical properties of the fabric, air spaces between the body and the fabric and characteristics of the ambient environment. According to the literature, there is agreement that movement of heat, moisture and air through a fabric are the major factors governing comfort, but some of the subjective factors, such as, fit, and aesthetic behavior are obviously very important in the textile field. We have discussed these objective and subjective factors independently in some detail. Also, we have some practical suggestions for keeping warm/cool that are based on the process of heat transfer in environment, the thermal functions of the body, and the thermal resistance of materials. Finally, much work needs to be done to understand how system of clothing affect human comfort under the various conditions.

간접 적응 극배치 제어기의 설계에 관한 연구

홍연찬 순천향대학교 1991 논문집 Vol.14 No.1

In this paper, an indirect adaptive pole placement controller for an unknown linear time-invariant single-input single-output nonminimum phase plant is proposed. To estimate the parameter vectors and state vector, an adaptive observer is incorporated into this indirect adaptive pole placement controller. This adaptive observer based upon the exponentially weighted least-squres algorithm is implemented. A series of simulations for a nonmonimum phase plant is presented to illustrate some features of the output response of this adaptive pole placement controller.

高麗前期 道制의 成立과 그 性格

洪淵津 부산대사학회 1993 역사와 세계 Vol.- No.17

衣服選擇變因의 要因構造 및 衣服滿足度에 미치는 相對的 寄與度

洪蓮淑 제주한라대학 1991 論文集 Vol.15 No.-

The present study was desigened to identify the factorial structure of the clothing selection variables and to determine the relative contribution effects of clothing selection factors on clothing satisfaction. Data were collected from 228 female undergraduate students residing in Cheju. Principle components analysis and varimax factor rotations were performed for the sample, and all yielded similar 6-factor solution(43 items). Multiple regression analysis was employed to analyze the relative contribution effects of clothing selection factors on clothing satisfaction. Correlations among all possible pairs of items within each factors were calculated and reliability (Cronbach's alpha, test-retest reliability) were also calculated using analysis of variance procedures. Factor analysis suggested practicality, economization, brand-oriented, conformity, individuality, and fashion as dimensions of clothing selection variables. Gernerally, the individual items were grouped together logical factor patterns. Factor 1, which accounted for 23.65% of the variance, included items seemed to represent practicality or care, and comfort. Factor 2(22.32% of the variance) included the 9 intelligent shopping-oriented reasons of fiber content, sewing, material and cleaning method. Factor 3(16.91% of the variance) included brand-oriented 9 items of credible brand and expensive clothing etc. Factor 4(15.76%) had high weights for 4 conformity items (approval their friends, desire for conformity for others etc.). Factor 5(11.31% of the variance) included 8 items (individual taste expressed in particular and impressive style, salience or unique clothing, image etc.) that might be considered individuality factors. Finally, fashion (style, fashion, social-approval etc.) dominated factor 6(10.03% of the variance). Results of multiple regression analysis indicated that multiple correlation coefficient (R) to clothing satisfaction predicted by all of 6 predictors was .379, therefore 14.4% of the satisfaction variance could be explained by all predictors. Subsequently, stepwise regression analysis showed that 3 predictors -conformity (R=.253), economization (R=.322), individuality (R=.361)- had statistically significant multiple regression coefficient to clothing satisfaction. These 3 factors explained 13.0% of the clothing satisfaction variance, which meant only 1.3% of the variance was explained by 3 surplus predictors.

BAYESIAN APPROACH TO LIFE TESTING AND RELIABILITY ESTIMATION USING LINEX LOSS FUNCTION : LINEX손실함수하에서의 베이즈 수명시험 및 신뢰도 추정

홍연옹 동양대학교 1995 동양대학교 논문집 Vol.1 No.1

본 연구에서는 수명이 지수분포를 따를 때 평균수명, 순간고장률, 신뢰도 함수 및 미래수명에 대한 베이즈 추정량을 구하였다.모수의 사전분포는 공액분포와 무정보사전분포를, 손실함수는 비대칭인 LINEX함수를 가정하였다.수명자료는 정수중단된 형태로 얻어지거나, 정시중단된 형태로 얻어지면서 고장발생시 p(0≤p≤1)의 확률로 정확한 고장시간을 모르는 상황을 대상으로 설정하였다.LINEX손실함수하에서 얻어진 베이즈 추정량이 비대칭도를 반영하는 모수 α의 값이 작으면 2차손실함수하에서 얻어진 추정량과 일치함을 보였다.

대학생들의 자원봉사활동 참여동기에 대한 분석

홍연숙 제주한라대학 2000 論文集 Vol.24 No.-

The purpose of this study was to examine motives for participating in volunteering activity. Participants were 328 college students from a university and three colleges at the Jeju Island in Korea. Data were obtained from a structured questionnaire. The major findings were as follows. First, Female students did more participated in volunteering activity than male students. Continuing participants rated significantly higher on degree of perceived worth, major application, participant intensity and necessity in volunteering activity than did discontinuing participants. Second, continuing participants placed significantly more importance on personal development and professional knowledgeㆍtechnique motivation factors than did discontinuing participants. Third, most active participants perceived significantly higher on personal development motivation, professional knowledgeㆍtechnique motivation factors and ethical/religious motivation than moderate active and least active participants Forth, high participants of perceived worth rated significantly higher on personal development motivation, professional knowledgeㆍtechnique motivation factors and ethical/religious motivation than medium and low participants. Fifth, there were significant differences as a function of participant fields.

최소수명을 보증하는 부하분배체계에 대한 확률모형

홍연웅 동양대학교 1997 동양대학교 논문집 Vol.3 No.1

A bivariate extension of the two-parameter exponential distribution is proposed as a model for certain problems in system level lifetesting. It applies, in particular, to two-component shared parallel systems having minimum guarantee time. Various statistical properties of the model are investigated, including maximum likelihood estimator of the parameters.

미성숙영구치의 복합항생제 적용에 의한 변색의 처치: 증례보고

박소연,김영재,김정욱,장기택,이상훈,김종철,한세현,현홍근 大韓小兒齒科學會 2012 大韓小兒齒科學會誌 Vol.39 No.1

The concept of revascularization of necrotic pulps regained interest and became an alternative conservative treatment option for young permanent teeth with immature roots. Revascularization of immature teeth with apical periodontitis depends mainly on disinfection of the canal. Since the infection of the root canal system is considered to be polymicrobial, a combination of drugs would be needed to treat the diverse flora. A triple antibiotic mixture of metronidazole, ciprofloxacin, and minocycline was used as an intracanal medicament. However, discoloration was developed after applying the triple antibiotic mixture. It is believed that the marked discoloration is related to the use of minocycline. The aim of this article was to present cases of coronal discoloration after triple antibiotic therapy in immature tooth and was treated with bleaching technique to control coronal discoloration. In conclusion, revascularization by using triple antibiotics promotes a paradigm shift in treating endodontically involved permanent teeth. However, we should understand that triple antibiotics containing minocycline induces tooth discoloration. Further research to prevent coronal discoloration should be investigated and suggested for the safe use of triple antibiotics. 괴사된 미성숙영구치의 치수치료에 있어서 치수의 재혈관화를 통해 치근단 발육 및 치근형성을 지속하려는 개념이 소개됨 으로써 현재 미성숙영구치의 치수치료의 대안으로 제시되고 있다. 이러한 치근단 염증을 가진 미성숙 영구치의 재혈관화를 위해서는 가장 중요한 것이 근관내 감염된 부분을 확실히 제거하는 살균(disinfection)이다. 근관 내 감염은 여러 세균의 복 합작용으로 일어나기 때문에 철저한 살균에 사용되는 약제의 조합은 다양한 범위의 균주를 모두 제거 가능해야한다. Metronidazole(MN), ciprofloxacin(CF), minocycline(MC)의 세 가지 복합항생제가 약제로 사용되고 있으나 이 복합항생 제 적용 후 치관변색을 일으키는 사례가 보고되고 있다. 이러한 치관변색은 항생제의 성분 중 MC에 의한 것으로 여겨지고 있으며, 본 증례에서는 복합항생제 적용에 의해 야기된 치관변색의 증례를 소개하고 이를 표백술로 처치하여 최종 수복한 증 례를 보고하였다. 복합항생제 적용을 통해 미성숙영구치의 치수치료에 새로운 패러다임을 제시한 것은 분명하지만 치관변색 등의 부작용이 있음을 인지하고 치관변색을 사전에 예방하고 최소화하기 위해 다양한 방법이 강구되어야 할 것이다.

정신보건법의 주요 쟁점 조항에 대한 선진국과의 사례 비교

홍진표,황순찬,박수빈,서동우,정은기,김진학,박종익,안주연,김수정,장홍석 大韓神經精神醫學會 2009 신경정신의학 Vol.48 No.2

Objectives The Mental Health Act is an initiative aimed at changing and shaping mental health services and protecting human rights of persons with mental disorders. Since the Mental Health Act was legislated in 1995, four amendments have been made according to the issues that arose from public concerns. However, there are still many debates about the human rights protection of the mentally iII. This study aimed to provide information regarding major aspects of the Mental Health Act by comparing them among several developed countries. Methods Current Mental Health Acts of the state of Michigan in the United States, Scotland in England, the state of Victoria in Australia, and Japan were reviewed. Issues regarding the Korean Mental Health Act were collected from seminar materials, news media contents, and mental health professionals Results The definition of subjects in Korean Mental Health Act was more inclusive than other countries and was derived from a medical classification of mental illness. Family members or guardians were granted important responsibilities for deciding the involuntary admission of mentally ill patients in Korea and Japan. In Western countries, Mental Health Review Tribunals or courts have the primary responsibility for important decisions about mentally ill patients. The regulation of immediate dis- charge after request by voluntarily admitted patients was not enacted in all countries except Korea. The mandatory procedure for involuntary admission in Western countries includes an individual case review with personal interview by a Mental Health Review Tribunal or court. Conclusion The Korean Mental Health Act appears to meet the basic standards of Guidelines from international organizations. Our traditional culture and inherent health systems seem to influence the legal regulation of mental health service and might be related to the problems of human rights protection of mentally ill patients in Korea.

대학생의 윤리적 소비에 대한 의식과 실천에 관한 연구

홍연금, 송인숙, 천경희 가톨릭대학교 생활과학연구소 2011 생활과학연구논집 Vol.31 No.1