• 한국실내디자인학회논문집
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• 제18권6호
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• pp.104-114
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• 2009

The purpose of study was understanding necessity of environment design for underground parking lot in residential design plan and grasping design plans of 'Activity Support' that considerate women, exclude women's unsecured feeling at underground parking lot. The inquiry analyzed 6 design plan in design competition that considerate women according to precede studies, a theory of CPTED, a design guide for wayfinding, and survey. A ramp, circulation, entrance, lighting, ventilation, and space design plan are proceed on this study The result are as below. First, a rectilinear figure ramp suits entrance plan on the circulation, but if it is not possible, cross-using of rectilinear and curvilinear figure ramp plan is desirable. Second, on the circulation plan, vehicles circulation plan and equality parking distribution plan got accomplished generally, and help senses of direction because it is planed network systemize. On a large scale underground parking lot, simplify parking circulation to convenience entrance and exit for weak in sense of direction. Third, the shape and material that‘s environmentally conscious will be in use to the entrance plan. As the first stage to the underground, artwork that women prefer can modulate the rejection of underground space. Forth, natural lighting system and ventilation can make the environment-friendly space, decrease the women’s rejection to the underground, it can also keep a natural watch on the space. Fifth, on the space design plan, it can use bright and comfortable design of wall and ground to decrease the women‘s rejection, also it is useful to the sense of direction. LED indirect lighting plan that 58.7% of women prefers on survey reflects women’s state of desire that bright and atmosphere. In addition, proper use of plans that subsidiary facilities, rest area with Sunken, and nature-friendly material can minimize differences of underground and ground parking lot.

• 한국전기전자재료학회논문지
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• 제24권6호
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• pp.497-503
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• 2011

Currently in Korea, the simple catenary type overhead contact line system is being applied to both conventional lines and high speed lines of electric railway, and circulation current flowing into the catenary system frequently bring undesirable consequences. Namely, the connector wire has many problems according to a flow of excessive circulation current and arc current on catenary when an electric train runs at high speed. This paper presents the development and application of a real-time data acquisition system designed to measure the electrical characteristics of an overhead catenary system in electric railways. The developed system is capable of storing data of a 25 kV power source in a live wire state through a telemetry environment. The field test results show that the proposed technique and the developed system can be practically applied to measure characteristics of current of an overhead catenary system.

• 한국안전학회지
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• 제25권2호
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• pp.41-46
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• 2010

This is to show some basic data for introducing both circulated aggregate and recycled powder producing waste concrete. Standard-mixing design for 24MPa has been basically used and added and replaced normal aggregate with recycled powder made of waste concrete. In addition, polycarboxylate high-range water reducing agent has been used because recycled powder is missing adhesive strength and it is not compare with cement's adhesive strength. Compressive strength with powder mixture of 2%, 4%, 6%, 8%, and 10% has been decreased down to 80% of normal concrete material strength without recycled powder mixture. This result has same decreasing proportion to tensile strength of the material. Resistant capacity change of beam varying with recycled powder mixture has been decreased down to 60% of normal concrete bean capacity, while there are 80% decrease of material strength. But strength and capacity change has same consistent decrease ratio. It is found that recycled powder with approximately 15% unit concrete volume can be replaced with cement in reasonable admixture mixing condition.

• 의료법학
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• 제19권2호
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• pp.209-233
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• 2018

이 연구의 목적은 5년간(2012년~2016년) 응급실 도착 전 심정지 환자의 자발순환회복 여부를 파악하고, 이에 미치는 요인을 규명하기 위하여 시도하였다. 이 연구는 우리나라 전국을 대상으로 2012~2016년 '질병관리본부'에서 실시한 '급성심장정지조사 원시자료'를 주 자료로 사용하였다. 2012년부터 2016년 5년간의 국가 심장정지 조사 자료 중 심장정지 환자 136,212명을 분석 대상으로 하였다. 일반적 특성, 사회·인구학적 특성, 발생관련 특성에 따른 응급실 도착 전 자발순환 회복 여부를 파악하기 위해 교차분석을 하였고, 자발순환 회복 여부에 미치는 요인을 분석하고자 이분형 로지스틱 회귀분석을 실시하였다. 분석결과 응급실 도착 전 자발순환 회복 여부에 미치는 요인은 응급실 도착전 심폐소생술 지속 이송 여부, 응급실 도착 전 급성심장정지 목격 여부, 일반인 심폐소생술 시행 종류, 급성심장정지 발생 장소, 급성심장정지 발생 원인이었다(P<0.001, P<0.01). 그러므로, 심정지 환자의 자발순환 회복에 영향을 미치는 요인을 중심으로 체계적인 정부의 보건정책 시행과 대중적인 보건교육을 강화해야 할 것이다.

• 한국실내디자인학회논문집
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• 제34호
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• pp.78-85
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• 2002

This study aims at alalyzing the circulation process, merchandising system of Mosi(Korean traditional garment material), and accessing the way of interior design of Mosi market. There are three kinds of garment material of Mosi such as Pilmosi, Gootmosi, Taemosi classified by manufacturing process. At Mosi market, these three materials are sold in due sequence. Mosi market needs three space zones such as Mosi market space, inspecting space of Mosi and resting place, and these three spaces have strong interrelationship, so designer should plan not to disterb the moving flow. In the Mosi market space there should be divided by three zones such as Pilmosi marketing place, Gootmosi marketing place, and Taemosi marketing place in due sequence. The furniture of Mosi market place divided two kinds such as furniture for Pilmosi and that of Gootmosi or Taemosi. The proper form of furniture for Pilmosi is circular arc bar counter and that for Gootmosi or Taemosi is low rectangular table.

• 자원리싸이클링
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• 제20권6호
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• pp.43-49
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• 2011

본 연구는 우리나라의 자원생산성(및 원재료 생산성), 물질순환이용율, 디커플링팩터 등의 3가지 지표를 산정하는 것을 통해 국내 경제활동과 자원소비간의 지속가능성을 평가하고 탈물질화 정도를 살펴보았다. 우리나라의 자원생산성은 2000년 1.32백만원/톤에서 2007년 1.61백만원/톤으로 22% 증가하였으며 2000년~2007년간 자원생산성 연평균증가율은 2.88%로 나타났다. 원재료물질투입량은 국내물질소비량(DMC)의 약 73%~76%를 차지하고 있으며, 원재료생산성은 2007년 2.11백만원/톤으로, 2000~2007년간의 연평균증가율은 3%로 나타났다. 배출된 폐기물은 재활용 및 에너지화를 통해 경제계로 순환되는데 국내 물질순환이용율은 2000년 10.9%에서 2007년 15.6%로 증가하였으며, 2000년부터 2007년까지 연평균 5.3% 수준으로 증가하였다. 그러나 전년대비 증가율의 변화율이 점차 감소하고 있는 추세로 나타났다. 또한 우리나라 경제활동과 자원소비량 간의 디커플링이 발생하여 탈물질화로 진행하고 있음을 확인할 수 있었다.

• 한국농촌건축학회논문집
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• 제22권3호
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• pp.17-24
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• 2020

Reservoirs, which make up most of South Korea's reservoirs, are located in rural areas. In the case of rural reservoirs, about 75% have been reported over 50 years old aged reservoirs constructed before the 1960s. Reservoirs are important facilities that store and supply water necessary for daily life. However, if it is destroyed, the reservoir can cause a lot of damage, so continuous management is necessary. As a method for strengthening old reservoirs, a method using cement has been widely applied. However, OPC is a product that uses a lot of carbon dioxide and natural resources. Therefore, the amount of cement should be reduced. Against this background, in this study, the ground injection material of utilizing circulation resources was applied to the site. Applied reservoirs have been around for 75 years and leaks have occurred in some sections. The application method was constructed in two rows, up to a depth of 12m. After reinforcement, the electrical resistivity test was conducted three times. As a result, similar resistance was shown at 1 month after construction. And after 6 months, the saturation area decreased. And the performance after reinforcing the aged reservoir was examined. As a result of the review, this study confirmed that the applicability was equivalent to that of OPC, and the excellent performance of reinforcing the aged reservoir was shown.

• 생태와환경
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• 제55권1호
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• pp.19-34
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• 2022

본 연구는 환경부에서 수행 중인 하구 수생태계 현황 조사 및 건강성 평가 연구용역의 일부이며, 2016년~2018년까지 수행된 조사 결과를 분석하였다. 조사 결과 총 325개의 하구 중 식생분포가 확인되지 않은 25개 지점을 제외한 300개 하구에서 총 187개의 식물군락 유형이 조사되었으며 이 중 염생식물 군락은 53개로 28.3%였다. 하구순환 유형에 따라서는 열린하구에서 41개, 닫힌하구에서 26개 염생식물 군락이 확인되었다. 분포하는 식생과 환경요인 간의 정준상관분석(CCA) 결과 수질요인에서는 염도(전기전도도) 및 T-N, T-P 농도가 상관성이 강했으며 하상재료 요인 중에서는 Silt, Sand, Pebble 구성비율이 가장 강한 상관성을 나타내었다. 본 연구의 결과를 종합할 때 한반도 해안 하구에 분포하는 염생식물 군락의 분포 특성은 해역, 하구순환 유형, 염도에 대한 내성, 하상재료 분포 비율 등에 따라 각 우점종의 입지가 차별화되는 결과를 나타내었다.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2002년도 추계학술대회 논문집
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• pp.198-201
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• 2002

An internal finishing process by the application of magnetic abrasive machining has been developed as a new technology to obtain a fine inner surface of pipe. In this paper, a slurry circulation system was designed and manufactured. Its finishing characteristics was experimently investigated by various effective factors such as dry, water flow, oil flow with a slurry. From the experimental results, it was found that the materal removal and surface roughness were good in oil flow with slurry. The slurry circulation system is effective on the internal finishing of non-ferromagnetic pipe(SUS304).

• Environmental Engineering Research
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• 제24권1호
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• pp.74-81
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• 2019

Upcycling generally refers to the conversion of waste materials to something useful or valuable and is a useful concept that can be applied not only to the waste design industry but also to waste recycling and resource circulation. Our study highlights upcycling as the key concept for improving the value of waste by redefining the concept as "the recycling of waste materials and discarded products in ways that enhance their value." Four upcycling strategies are linked to material flow analyses conducted on waste electronic and electrical equipment, specifically waste refrigerators and waste computers, to examine the technologies available for implementation and suggest guidelines for the promotion of upcycling. The amount of waste refrigerators collected by the formal sector was 121,642 tons/y and the informal sector, 63,823 tons/y. The current recycling ratio of waste refrigerators was estimated as 88.53%. A total of 7,585 tons/y of waste computers were collected by the formal sector and 3,807 tons/y by the informal sector after discharge. Meanwhile, the current recycling ratio of waste computers was estimated as 77.43%. We found that it is possible to introduce 28 upcycling technologies in the case of refrigerators, and 15 technologies are available to promote upcycling in the case of computers. By refining the broad concept of upcycling and looking at the stages of material flow, our approach presents universally applicable directions for incorporating upcycling in resource recovery and recirculation plans.