• 한국조경학회지
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• 제28권3호
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• pp.88-96
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• 2000

The objective of this study is to evaluate the preference and visual characteristic of users according to the location of benches at urban community parks. The types of benches are separated into four patterns and located in four representative places at urban community parks. Each relations between visual preference and adjective related factors are calibrated by the estimated results of Pearson correlation coefficient. Moreover, the factors which affect the visual preference are obtained by multiple regression analysis and to calibrate the each factors significant level, the method of multivariate variance analysis is applied. The results of this study are summzrized as belows: 1. Four types of factors which consist the visual characteristic are classified as emotional factor of visual images(aesthetic factor(F1), texture related factor(F2)) and physical factor(physical factor(F3), transformable factor(F4)). Each factor's eigenvalue is appears as 5.27∼1.78 and the eigenvalue of emotional factor of visual images is more higher than the physical factor. 2. The correlation coefficient between visual preference according to the location of benches(X21) and aesthetic factor(f1) is estimated as 0.79, which is highest value among the four factors. And the correlation coefficient of texture related factor(f2), physical factor(F3) and transformable factor(F4) is estimated as 0.14, 0.04 and 0.08 respectively. 3. The visual preference of users according to the location of benches is greatly affected by the emotional factor of visual images(F1, F2) and the physical factor(F3, F4) are poorly related. The results of this study suggest the effective guidelines for the location of leisure facilities. Moreover the design and planning of leisure facilities at the urban community park have to be reexamined. What must be examined from now on is as follows: First, the preference research of rest facilities in the urban park through the multiple approach must be carried out continuously. Second, the research about the visual quality of the environmental sight observed in sitting on the bench as well as the visual quality of the showed object and place needs to be supported. Nevertheless, through this study the utilization into the useful data of the plan and the design for the systematic disposition of landscape architecture equipments centered on the users can be expected.

• 정보화정책
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• 제26권3호
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• pp.69-89
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• 2019

제4차 산업혁명시대의 거주와 삶의 공간이 될 스마트 도시의 구현을 위해서는 거주민의 생활 정보, 건축물 및 시설물 정보 등 구체적이고 민감한 정보가 실시간으로 수집 처리 될 수밖에 없다. 발전하는 도시 기능과 개인 삶의 편의성이 높아지는 반면 개인정보의 노출 및 유출의 위협성도 동시에 높아 질 수밖에 없는 상황이다. 따라서 스마트 도시의 설계단계, 지능정보 기계설비의 기술개발 및 운용 기획단계에서부터 사전적 개인정보보호 설계 개념이 반영 되어야 한다. 이러한 측면에서 본 연구는 '개인정보보호 적용설계(Privacy by design)'개념의 정책화와 적용을 위한 연구를 수행 하였다. 연구 분석 결과를 보면 제도적인 측면, 산업적 측면 그리고 기술적 측면에서 이미 개인정보보호 적용설계(PbD)의 개념을 도입할 수밖에 없는 상황에 이르렀다. 실제로 이러한 현상은 유럽과 미국 등의 사례를 통해 확인할 수 있었다. 이에 우리나라 역시 스마트 도시의 경쟁력을 강화하기 위해서 스마트 도시의 핵심전략인 데이터 기반 경제를 확보하기 위한 전략으로 개인정보보호 적용설계(PbD)를 적극도입 해야함을 본 연구는 강조하였다. 이에 본 연구는 개인정보보호 적용설계(PbD)의 기본 속성이 반영된 법제 개선과 기술개발지원이 필요함을 정책제안으로 제시하였다.

• Advances in environmental research
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• 제4권3호
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• pp.173-181
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• 2015

This article outlines a case study of water and energy savings in a typical building through a modelling process and analysis of simultaneous water-energy saving measures. Wet cooling towers are one of the most important equipments in buildings with a considerable amount of water and energy consumption. A variety of methods are provided to reduce water and energy consumption in these facilities. In this paper, thorough the modeling of a typical building, water and energy consumption are measured. Then, After application of modern methods known to be effective in saving water and energy, including the ozone treatment for cooling towers and shade installation for windows, i.e. fins and overhangs, the amount of water and energy saving are compared with the base case using the Simergy model. The annual water consumption of the building, by more than 50% reduction, has been reached to 500 cubic meters from 1024 cubic meters. The annual electric energy consumption has been decreased from 405,178 kWh to 340,944 kWh, which is about 16%. After modeling, monthly peak of electrical energy consumption of 49,428 has dropped to 40,562 kWh. The reduction of 18% in the monthly peak can largely reduce the expenses of electricity consumption at peak.

• 한국항해항만학회지
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• 제29권8호
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• pp.741-746
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• 2005

본 연구는 시뮬레이션을 활용하여 장치장의 레이아웃을 설계하고 레이아웃의 대안설계를 평가하기 위한 방법을 제안한다. 설계방법론은 장치장 레이아웃을 가진 재래식 컨테이너터미널의 개념들을 기초로 한다. 일반적으로 컨테이너터미널의 장치장 설계는 두가지 부분으로 구성되는데, 하나는 섹션수와 런수간의 장치장 면적을 분리하는 것이고, 다른 하나는 야드트럭과 야드크레인과 같은 장비의 수를 결정하는 것이다. 과거에는 이 설계가 시설물과 장비들을 고려해야 하는 매우 복잡한 문제이기 때문에 재래식 컨테이너터미널의 복제와 운영자의 경험에 의존했다. 본 논문에서는 시뮬레이션 방법이 사용된 개념설계로서 장치장 설계 방법을 제안한다. 장치장 영역에서 섹션과 런의 수, 컨테이너 크레인당 야드트럭의 수, 런딩 야드 크레인의 수 등이 시뮬레이션을 사용하여 결정된다. 추가로 장치장 레이아웃에서 블록간의 통행량 흐름이 비율별로 추정된다.

• 한국가정과교육학회지
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• 제19권3호
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• pp.61-76
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• 2007

이 연구는 제주특별자치도 중학교 가정실의 실내환경 및 시설 설비 현황에 대해 조사 분석하여 문제점을 파악하는 데 목적을 두고 있다. 연구방법은 현장조사와 설문조사를 채택하였다. 현장조사는 제주특별자치도내 중학교 41개교 중 10개교를 선정하여 2006년 8월 16일부러 9월 30일까지 온도, 습도, 조도, 교구실태를 조사하였고, 설문조사는 제주특별자치도 41개 중학교 기술 가정과 교사 95명을 대상으로 2005년 11월 1일부터 2005년 11월 23일까지 우편을 통해 조사하였다. 현장측정을 하면서 회수된 설문지들을 포함하여 총 95부중 64부가 회수되었으며 응답한 설문지 중 유효한 61부를 최종 분석 자료로 사용하였다. 수집된 자료는 SPSS Win.12.0 프로그램을 사용하여 빈도, 백분율 분석을 하였다. 연구결과를 하면 다음과 같다. 첫째, 교사들은 가정실 크기에 대해 불만을 느끼고 있지만 가정실의 크기에 대한 명확한 기준이 없어 가정실 크기에 대한 기준이 필요하다. 둘째, 설문조사와 현장조사 결과 가정실의 여름 겨울철 실내온도는 부적당한 것으로 나타났다. 섯째, 현재 각각 설치되어 있는 형태의 작업대, 개수대, 가스대 형태는 비효율적이다. 넷째, 환기시설을 갖추고 있는 곳은 많지만 환기는 잘 이루어지지 않아 환기시설이 미흡하다. 다섯째, 소화기 외에 다른 안전시설이 미비하므로 안전시설 확충이 필요하다. 여섯째, 교구보유율이 매우 낮으며 교구가 조리기초 영역에 편중되어 있다. 결론적으로 제주특별자치도 중학교 가정실의 실내환경은 온 습 조도 및 환기 설비가 전반적으로 미흡하고, 가정실의 구조가 비효율적 동선을 이루고 있으며, 시설 설비 현황은 오래된 건물과 낮은 교구보유율로 매우 낙후되어있는 상태이다. 그러므로 이러한 문제점들을 개선하기 위하여 실내환경과 시설 설비 관련 기준에 맞추어 시설 설비 개선 및 교구 확충이 이루어져야 할 것이다. 필요가 있다. 학생들의 가치관이 다양화되고 있는 만큼 의생활에 흥미와 관심과 의욕을 가질 수 있도록 충실한 의생활교육이 요구되는 시대에 맞게, 내용은 물론 수업체제를 발전시키는 것이 큰 과제라고 할 수 있다. 이렇게 변화하는 사회, 생활에 학교교육이 발맞춰 나가기 위해서는 교육과정의 틀을 바꾸는 것은 쉬운 일이 아니므로, 교과서의 내용을 교육과정 개정주기보다 자주 정기적으로 개편하여 내용을 수정, 보완할 수 있도록 그 방법을 모색해야 할 것이다.1{\pm}10.8%$, 여자 $54.6{\pm}9.9%$로 조사되었다. 칼슘의 섭취량은 평균필요량에 비해 전체 $74.9{\pm}31.9%$로 나타났다. 에너지 섭취량에 있어서 남자 노인들은 모두가 필요추정량의 75% 미만을 섭취하고 있었고 여자 노인의 경우에도 97%가 필요추정량의 75% 미만을 섭취하여 에너지 섭취량이 매우 낮았다 반면에 단백질 섭취량에 있어서는 남자 노인의 경우 100%가 평균필요량의 125%를 초과하였고, 여자 노인의 경우에는 91%가 평균필요량의 125%를 초과하여 대조적이었다. 비타민 A와 E는 각각 평균필요량과 충분섭취량의 125%를 초과하는 비율이 높게 나타난 반면에 비타민 $B_2$는 특히 남자 노인에서 평균필요량의 75%미만을 섭취한 비율이 높게 나타났다. 엽산 섭취량에 있어서는 평균필요량의 75% 미만을 섭취한 비율이 전체 96%로 나타나 심각한 부족상태로 조사되었다 반면에 철의 섭취량은 남녀 모두 100%가 평균필요량의 125%를 초과하여 섭취한 것으로 나타났다. 아연의 섭취량은 남자 17%,여자 15%가 평균필요량의 75% 미만을 섭취한 것으로 조사되었다. 에너지와 엽산은 모든 노인들에서 평균필요량에 미달되게 섭취한 것으로 나타났다. 반면에 단백질과 철분은 남녀 노인 모두에서 평균필요량 보다 적게 섭취한

• 대한전기학회:학술대회논문집
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• 대한전기학회 2005년도 제36회 하계학술대회 논문집 A
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• pp.277-279
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• 2005

Recently, due to the increase of power conversion devices and nonlinear loads with the development of information, communication and control technologies, the instantaneous minute interruption factors such as voltage & current harmonics, surge occurring frequency, instantaneous voltage variation, voltage unbalance, flicker etc. have greatly threatened the power quality, and the deterioration of electric power facilities and the functional error of controllers are increasing. As such an instantaneous minute interruption appears to be small and local, accurate evaluation with measurement is difficult and total analysis system is required through a wide range of power quality effect analysis such as the simultaneous measurement on various power supply phenomena and the analysis on the interrelation with system loads. Most of conventional power quality diagnosis equipments have beer developed and applied, which were able to measure the stability rate of frequency, the stability rate of voltage, the electricity-failure duration etc, However, they were insufficient to analyze the system present situation, understand the cause of the failure occurred by the problem of power quality and analyze out the phenomena. Accordingly, this study will address the development of the system for a wide range of power quality diagnosis over the present level, the system for supporting the determination such as the analysis on risk factors, failure mode and impact, the system for harmonic evaluation based on international standards(IEC 61000 Series) and the total power quality diagnosis network & system with the extension and openness as a local and national-scale broadband power quality diagnosis system.

• 가정과삶의질연구
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• 제21권5호
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• pp.13-24
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• 2003

Regarding leisure and work as very important in residential life of old ages, this study analyzed their preference by leisure and work for senior congregate housing, which can provide proper work and leisure activities for older people who are able to manage their social activities with healthy condition. It conducted a survey of middle aged of the 50's who would face problems of senior housing in 2010, with stratified sampling by region, sex and housing structure type. Totally 556 Questionnaires were used for the final analysis. The research results showed that, first, the group which was positive toward their works mostly had spouse of the age of early 50' s and work for professional, technological, managerial positions with good health. Second, the more positive group towards their work showed high willingness to move in senior congregate housing, than a negative group towards their work, and put a weight on the openness of shared space and facilities as well as various alarming equipments, common space, common programs and the ability of managers. Third, according to the attitudes toward leisure activities, there were differences in each group by housing structure type, education of their own or their spouses, monthly income, property, economic ability, health condition, living together with spouse, housing tenureship, and usable area of houses. The fourth was that those who enjoy active leisure activities presented high willingness to move in senior congregate housing than those of negative attitude and also there was a difference in managerial ways. Throughout the results of the study, it appeared that a group of positive attitude toward work and leisure, than that of negative attitude, recognized the importance of senior congregate housing which social and leisure programs could support. It implied necessary to develop housing for the older people who have enough ability to manage their leisure activity as well as their work. The study is likely to have a contribution to suggest practical data for helping the development of housing for self-reliant seniors by analyzing their preference on senior congregate housing by their attitudes toward work. The research for the factors of various designs and managements by leisure and work may become the following research theme of the study.

• 인터넷정보학회논문지
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• 제19권3호
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• pp.79-88
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• 2018

세계 주요 국가들은 미래성장 동력 육성과 신기술 확보를 위하여 국가차원의 R&D 지원을 확대하고 있으며, 우리나라에서도 R&D 투자 규모를 지속적으로 확대하고 있다. 또한, 우리나라의 국가 R&D의 규모와 GDP 대비 면에서 세계 최고수준에 이른 상황이여서 R&D예산의 양적인 확대와 함께 효율적인 활용이 더욱 중요해지고 있다. 이러한 흐름에 따라 정부R&D혁신방안('15.5)의 주요 과제 중 세부실행과제로 '연구시설 장비 활용도 제고'가 선정되었다. 본 연구에서는 현재 구축중인 국방연구시설장비 정보시스템(DRES)를 통해 국방분야 연구시설장비의 관리방안을 연구하였다. 이를 위해 현재 국가차원의 연구시설장비 관리절차를 파악하였고 기존 국방분야 연구시설 장비의 관리현황과 문제점, 관련규정을 분석하였다. 이러한 분석 설계를 통하여 국방분야 연구시설 장비를 관리할 수 있는 정보체계를 설계 분석하였으며 이를 통해 관리방안을 연구하였다.

• 한국물환경학회지
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• 제22권1호
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• pp.51-58
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• 2006

The effluent limitations for individual industry based on the best available technology economically achievable (BAT) have been required to achieve effective regulation. BAT assessment criteria that are suitable for the circumstances of Korean industry were developed in the previous study. The criteria were applied to determine the BAT for leather tanning and finishing industry. For the evaluation BAT, a subcategorization for the industry considering wastewater characteristics, source equipments, raw material and so on should be suggested. Three subcategories: A) Unharing, Chrome Tan, Retan-Wet Finish, B) Chrome Tan, Retan-Wet Finish, and C) Furskins were proposed in this study. Wastewater discharged from the each category contains high concentration of COD, chrome, nitrogen and sulfide. In particular, the concentration of nitrogen from the subcategory A is significantly greater. Twenty sites were surveyed and wastewater qualities were analyzed. Therefore, six different technologies were applied to the subcategory A for the end-of-pipe treatment technology, and a technology was used in the subcategory B and C, respectively. The technology candidates were evaluated in terms of environmental impacts, economically achievability, treatment performance and economical reasonability. As the result, the technology options for each subcategories: A) primary chemical precipitation + modified Ludzack-Ettinger process (MLE) + secondary chemical precipitation, B) chemical precipitation + typical activated-sludge process + Fenton oxidation, C) chemical precipitation + typical activated-sludge process + batch Fenton oxidation or batch activated carbon treatment were selected as the BAT, respectively.

• 설비공학논문집
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• 제23권6호
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• pp.449-469
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• 2011

This article reviews the papers published in the Korean Journal of Air-Conditioning and Refrigerating Engineering during 2010. It is intended to understand the status of current research in the areas of heating, cooling, ventilation, sanitation, and indoor environments of buildings and plant facilities. Conclusions are as follows. (1) Research trends of thermal and fluid engineering have been surveyed as groups of general thermal and fluid flow, fluid machinery, and new and renewable energy. Various topics were presented in the field of general thermal and fluid flow. Research issues mainly focused on the thermal reliability of axial fan and compressor in the field of fluid machinery. Studies on the design of ground source heat pump systems and solar chemical reactors were executed in the field of new and renewable energy. (2) Research works on heat transfer area have been reviewed in the categories of heat transfer characteristics and industrial heat exchangers. Researches on heat transfer characteristics included heat transfer in thermoelectric cooling/power generation systems, combined heat and power systems, carbon nano fluid with PVP, channel filled with metal foam and smoke ventilation in a rescue station of a railroad tunnel. Also the studies on flow boiling of R123/oil mixture in a plain tube bundle and R410A charge amount in an air cooled mini-channel condenser were reported. In the area of industrial heat exchangers, researches on plate heat exchanger, shell and tube heat exchanger, enthalpy exchanger, micro channel PCHE were performed. (2) Research works on heat transfer area have been reviewed in the categories of heat transfer characteristics and industrial heat exchangers. Researches on heat transfer characteristics included heat transfer in thermoelectric cooling/power generation systems, combined heat and power systems, carbon nano fluid with PVP, channel filled with metal foam and smoke ventilation in a rescue station of a railroad tunnel. Also the studies on flow boiling of R123/oil mixture in a plain tube bundle and R410A charge amount in an air cooled mini-channel condenser were reported. In the area of industrial heat exchangers, researches on plate heat exchanger, shell and tube heat exchanger, enthalpy exchanger, micro channel PCHE were performed. (3) Refrigeration systems with alternative refrigerants such as hydrocarbons, mixed refrigerants, and CO2 were studied. Performance improvement of refrigeration systems are tried applying various ideas of refrigerant subcooling, dual evaporator with hot gas bypass control and feedforward control. The hybrid solar systems combining the solar collection devices with absorption chillers or compression heat pumps are simulated and studied experimentally as well to improve the understanding and the feasibility for actual applications. (4) Research trend in the field of mechanical building facilities has been found to be mainly focused on field applications rather than performance improvements. Various studies on heating and cooling systems, HVAC facilities, indoor air environments and energy resources were carried to improve the maintenance and management of building service equipments. In the field of heating and cooling systems, papers on a transformer cooling system, a combined heat and power, a slab thermal storage and a heat pump were reported. In the field of HVAC facilities, papers on a cooling load, an ondol and a drying were presented. Also, studies on HVAC systems using unutilized indoor air environments and energy resources such as air curtains, bioviolence, cleanrooms, ventilation, district heating, landfill gas were studied. (5) In the field of architectural environment and energy, studies of various purposes were conducted such as indoor environment, building energy, renewable energy and green building. In particular, renewable energy and building energy-related researches have mainly been studied reflecting the global interest. In addition, many researches which related the domestic green building certification of school building were performed to improve the indoor environment of school.