• 대한토목학회논문집
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• 제41권5호
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• pp.551-557
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• 2021

건축물의 부설주차장 설치기준은 주차장법과 지자체 조례에 따라 용도별, 연면적 등을 고려하여 결정된다. 그러나 최근 문화 및 집회시설의 교통수요 증가와 함께 시설 이용에 대한 불편함이 제기되고 있다. 문화 및 집회시설의 주차면 수 계획 시 법정주차면, 원단위주차면을 사용하지만, 이는 현실성 및 편의성을 고려하지 못했기에 시설 이용에 불편을 주고 주변 도로에 교통문제를 야기한다. 이에 본 연구에서는 광주광역시 내 문화시설인 영화관의 현실적인 주차면 수 산정을 위한 식을 제시하고자 한다. 광주광역시 내 영화관의 주차면수, 상영관수, 좌석수, 연면적, 버스노선대수, 불법주정차 유·무 등을 조사한 후 SPSS 회귀분석을 활용하여 주차면수 산정 예측모형을 제시하였다. 적정 주차면 수 산정모형과 원단위주차면을 비교한 결과, 예측모형이 실제 누적주차면과 더 근사한 값으로 나타나 모형 검증을 완료하였다. 본 연구에서 검증된 모형을 기준으로, 문화 및 집회시설 부설주차장 설치 시 현실적으로 적절한 주차계획을 수립할 수 있을 것으로 판단된다. 다만 본 연구에서는 특정지역에 제한적으로 연구를 수행하였으므로 향후 다양한 시설과 인구 및 도시 특성을 고려하여 문화 및 집회시설 이외의 근린생활시설을 대상으로 추가적인 연구를 실시해야 할 것이다.

• 한국소음진동공학회논문집
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• 제24권9호
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• pp.706-715
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• 2014

Recently, the medical community has been enthusiastically welcoming robots that are able to provide high-quality medical services across the board, including assisting the surgeons during surgeries. In response, many higher education institutions and research facilities started to conduct various experiments and studies about these robots. During such research, it was discovered that the arm of one particular robot type that is being developed to assist surgeries are prone to vibrate even from the weakest impact, in addition to other residual vibration problems. We attempted to reduce such dynamic response by using a MF-TMD that is produced by adding magnetic fluid to ECD. We verified the MF-TMD's performance by testing it within various frequency bands and attenuations. We then designed a cantilever that was structurally similar to the robot's arm. We attached the MF-TMD to this cantilever and conducted a pilot experiment, which validated our hypothesis that MF-TMD will reduce the robot arm's vibrations through its optimal damping ratio. Henceforth, we attached the MF-TMD to the robot arm in question and conducted a performance experiment in which we tuned the MF-TMD's frequency and damping factor to its optimal level and measured the vibrations of the arm. The experiment demonstrated that the vibrations that occurred whenever the arms rotated were significantly reduced.

• International Journal of Internet, Broadcasting and Communication
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• 제12권2호
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• pp.1-7
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• 2020

The secure access the lighting, Heating, ventilation, and air conditioning (HVAC), fire safety, and security control boxes of building facilities is the primary objective of future smart buildings. This paper proposes an authorized user access to the electrical, lighting, fire safety, and security control boxes in the smart building, by using color grid coded optical camera communication (OCC) with face recognition Technologies. The existing CCTV subsystem can be used as the face recognition security subsystem for the proposed approach. At the same time a smart device attached camera can used as an OCC receiver of color grid code for user access authentication data sent by the control boxes to proceed authorization. This proposed approach allows increasing an authorization control reliability and highly secured authentication on accessing building facility infrastructure. The result of color grid code sequence received by the unauthorized person and his face identification allows getting good results in security and gaining effectiveness of accessing building facility infrastructure. The proposed concept uses the encoded user access authentication information through control box monitor and the smart device application which detect and decode the color grid coded informations combinations and then send user through the smart building network to building management system for authentication verification in combination with the facial features that gives a high protection level. The proposed concept is implemented on testbed model and experiment results verified for the secured user authentication in real-time.

• 한국인터넷방송통신학회논문지
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• 제10권3호
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• pp.131-137
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• 2010

UMSN (Ubiquitous Medical Sensor Network)은 실시간 객체식별과 센서 정보 수집으로 병원 등 의료시설의 u-Healthcare 시스템에 사용되고 있다. RF 무선 주파수로 리더기를 이용해 태그를 식별하는 RFID는 특히 환자 관리에 많이 쓰인다. 하지만 RFID 태그는 리더기의 질의에 항상 자신의 ID를 응답하기 때문에 불법적인 리더기에 ID를 전송하거나 불필요한 질의에 응답하여 도청, 스푸핑 등의 보안 취약점이 발생할 수 있다. 본 논문은 UMSN 기반의 환자관리 시스템에서 리더기가 환자, 의료기기, 의료진, 각종센서 등에 부착된 태그에 과도한 인증을 요청하여 발생할 수 있는 RFID Back-end Server의 트래픽을 줄이고 이 과정에서 발생 가능한 도청, 스푸핑 등의 보안 위협을 줄이기 위해 태그 ID 세분화 기법을 제안한다. 제안 기법은 환자의 태그 ID 문자열을 기준으로 환자를 분류하여 집단으로 구분하고 해당 집단에 인가된 리더기가 태그를 읽었을 때만 Back-end Server가 태그 인증절차를 수행하도록 하여 Back-end Server 트래픽과 보안 위협을 줄일 수 있다.

• 한국산업융합학회 논문집
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• 제23권5호
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• pp.789-798
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• 2020

This paper considers the development of the dynamic analysis model and simulation-based operation safety estimation of A-Frame to be applied to the test evaluation support vessel for real sea test. The support vessel will be manufactured by modifying the existing offshore support vessel. Also, development and installation of various sensors and supporting facilities for test evaluation are under preparation. Among these facilities, A-Frame is an equipment that transfers marine equipment from ship deck to the sea floor, and is being designed to transfer up to 50 ton class equipment. However, the A-Frame is a moving equipment using hydraulic cylinders. When the 50 ton equipment is attached and transferred to A-Frame, the buckling of cylinders may occur or A-Frame becomes inoperable due to the influence of huge inertia. For this reason, safety verification should be performed using dynamic analysis techniques that can take into account huge inertia forces in the design of A-Frame. Therefore, in this study, A-Frame and ship behavior were modeled using dynamic analysis method, and the applied loads of various equipment including hydraulic cylinder of A-Frame was measured and the operation safety review was performed.

• 한국대기환경학회지
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• 제25권5호
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• pp.382-391
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• 2009

The aim of the study was to assess the levels in typical central borough of phthalate exposure by monitoring children's facilities (19 kindergartens and 21 elementary schools) and households (17 old apartments and 22 new apartments) via sampling indoor floor dust. A vacuum cleaner specifically prepared for sampling dust was attached to a filter of a vacuum cleaner dust collecting container. During the sample preparation process, containers made of glass were used and analysis was performed using GC-MSD. The mean concentration of DEHP was $412{\mu}g/g$, DnBP was $24{\mu}g/g$, and BBzP was $10{\mu}g/g$ dust. The indoor characteristics including floor, wall materials, years after construction, water leakage history for the past three years, and ventilation were also examined to categorize phthalate esters from the dust samples. From the flooring and wallpaper materials of kindergartens and elementary schools, DEHP in the dust sample appeared at a statistically significant level (p<0.05) when PVC materials were present. DEHP in the indoor dust also increased significantly (p<0.01) during the construction period. The daily intake of DEHP measured from indoor dust was 0.08~$19.7{\mu}g/kg/day$ for children and 0.02~$1.1{\mu}g/kg/day$ for adults (women). The results clearly revealed that phthalate exposure is greater in children than in adults (women) due to the indoor dust.

• 보건의료산업학회지
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• 제2권1호
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• pp.125-136
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• 2008

Government came to enforce long-term care insurance system in preparation for the rapid aging society. Whether this system is successful or not depends on the professionalism of long-term care-givers who are professional population in charge of care service. Currently in the early stage of enforcement, such problems as a race cutting fee resulted from numerical increase of educational facilities, insolvent operation, degradation of education level resulted from unprofessional instructor, are pointed out. As a mean of manpower-training on long-term care insurance system, this study is to research public-private-university network model of the Academy of Continuing Education attached to Ko Sin University which is the case of Yong Do Gu Busan city. Networking between the vision and development strategy of Yong Do Gu on continuing education city, education system on community manpower-training supported by Ko Sin University, and service field of welfare for the elderly can not only contribute to the professionalism of long-term care-givers but also play an ideal role in manpower-utilization and arrangement of community. Through this networking, high quality of education level and circumstance, using the existing infra, manpower-training and utilization for continuing education of Yong Do Gu can be accomplished. Additionally, the connection with facilities related with welfare for the elderly can contribute to professionalism and accountability of manpower-networking.

• 한국농촌건축학회논문집
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• 제20권2호
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• pp.49-56
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• 2018

The vernacular houses with 田-shaped floor plan at Gangreung have been played important roles in tracing the vernacular living cultures including housing life. But due to the adoption of convenient facilities in vernacular housing lives caused by modernization and urbanization, many changes and transformations have happened at residential space of vernacular houses. This thesis targets to extract basic data to prepare and prevent various problems in process of renovation, extension and function change as installing housing life facilities, and to identify the changes and transformations of them to prepare the proper balances between their original form preservation and residents' convenience living. The results are as follows. The inner wall removal of rooms, the fuel change of cooking and heating, the leveling change of kitchen floor made possible the sedentary lifestyles. And its residential rooms were transformed from two row to one row by inner wall removal, the fuel heating change, the heating method change and the heat insulating materials. The residential extension materials were changed from the traditional materials such as soil, wood, etc to the modern materials such as cement block or brick, sandwich panel, etc. And the modern materials were used and attached to widen residential spaces to the vernacular house because of the easiness of execution. So, it is necessary for 田-shaped floor plan vernacular house owners to distribute printed execution guide book to prevent and minimize the various problems to be shown by extension, renovation and function change.

• 한국항행학회논문지
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• 제15권4호
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• pp.602-608
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• 2011

본 논문에서는 복잡도가 높은 건물 내에 산재되어 있는 비상등, 소화기 및 스프링클러를 효과적으로 관리하기 위해 유비쿼터스 센서 네트워크 기반의 자율무선통신방식을 이용한 지능형 소방방재 시스템 시뮬레이션 환경을 구성하고, 장치의 현재 상태에 대한 모니터링, 작동 유무를 확인하고 관리 할 수 있는 스마트폰 어플리케이션을 구현하였다. 구현한 시스템 환경은 센서노드가 부착된 시설물, 장치의 정보수집과 제어를 위한 관리서버, 그리고 관리서버와 정보를 주고받는 스마트폰 어플리케이션으로 구성된다. 실험결과 구현된 시스템은 각 시설물과 정보를 송수신하여 장치의 상태를 확인하고 제어 하였으며, 안드로이드 기반 스마트폰 어플리케이션을 이용하여 관리서버와 시설물의 정보를 주고받고 제어 명령을 통해 장치가 통제됨을 확인할 수 있었다.

• 한국치위생학회지
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• 제12권1호
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• pp.179-187
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• 2012

Objectives : The purpose of this study was to examine the influential factors for the choice of dental institutions among adult office workers who were one of major medical consumer groups, the relationship between their health promotion lifestyle and their choice of dental institutions, ways of boosting the efficiency of hospital management and differences in differentiation strategies among dental institutions. Methods : The subjects in this study were 160 office workers who were aged 20 and over and worked in Seoul, North Jeolla Province and South Jeolla Province. They were selected by convenience sampling, and a survey was conducted from February 1 to July 20, 2011. The answer sheets from 149 respondents were analyzed by the statistical package SPSS WIN 12.0 except for 11 incomplete ones. Results : As for the selection factors of dental institutions by general characteristics, they attached a statistically and significantly different importance to convenience according to gender(p<0.05), to reliability, facilities and cleanness according to age(p<0.05), to reliability and convenience according to academic credential(p<0.05) and to facilities and cleanness according to academic credential(p<0.01). Concerning the links between the form of using dental institutions and the selection factors of dental institutions, they gave a statistically and significantly different weight to reliability according to that(p<0.05). Convenience(p<0.001) was the primary selection factor of dental institutions among those who scored higher in health promotion lifestyle. Conclusions : Given the above-mentioned findings, it seemed that the regular implementation of oral health plans geared toward workers and the development of educational programs are required to promote the oral health of workers. But this study examined the workers in several regions only, and the findings might not be generalizable.