• Particle and aerosol research
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• v.8 no.1
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• pp.9-15
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• 2012

Three different commercial particle counters were used to measure the PM2.5 particles in this study. An Aerosol Spectrometer (AS) 1.109 model of Grimm and a Particle Sensor (PS) 3030 model of HCT were compared with an Aerodynamic Particle Sizer (APS) 3321 model of TSI. The responses of these instruments were compared for four sizes ($1.0{\mu}m$, $1.5{\mu}m$, $2.0{\mu}m$ and $2.5{\mu}m$) of polystyrene latex (PSL) particles and indoor air particles of the office room. The mode diameter, particle size distribution and total particle number concentration of PSL particles were measured by each instrument. In the office room, the total particle number concentration was measured for 25 minutes. In results of particle size distribution and mode diameter, the APS 3321 (52 size-channels) was more accurate than the AS 1.109 (31 size-channels) and PS-3030 (10-szie channels) since the APS has more number of size-channels than the other instruments. However, AS 1.109 and PS-3030 provided similar results of total particle number concentration to those from the APS 3321. In results of office room test, there were no significant difference from each instrument similar to results of PSL test.

• Korean Institute of Interior Design Journal
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• no.29
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• pp.153-162
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• 2001

This study suggests the basic data required in setting up the standard for the architectural planning of Korean senior center by analyzing the standard and current situation of a senior center in Japan that has the welfare facility system similar to that of Korea and understanding its architectural characteristics. 1) Basic spaces that constitute the senior center in Japan are meeting room, lecture room, library, multipurpose meeting room, conference room, game-recreation room, kitchen, lounge, locker room and office. ADL, kitchen, relaxing room, private bathroom, and special bathroom are needed for adult day care as establishments as an annex and work room is also required for Job training. 2) The area of a senior center is calculated in consideration of its space organization that are required as basic. For the type "A", minimum area of 1,256.42 $m^2$2 and maximum area of 2,050.56$m^2$ and for the type "B", minimum area of 812000$m^2$ and maximum area of 1,604.14$m^2$ are suggested as optimum areas. 3) The circulation planning is presented by the connected between the space organization as well as the circulation system in day care center.

• Journal of Radiation Protection and Research
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• v.32 no.1
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• pp.27-34
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• 2007

In this paper, We are evaluated about bio-signal between general workers and nuclear medicine workers which is more radiation exposure relatively. In order to reciprocal evaluated two group, we experimented nuclear medicine workers in Chung-Buk National University Hospital at department of nuclear medicine and worker in Chon-Nam National University Hospital at CT room, general radiographic room, medical recording room, receipt room, general office room. Used of experimental Equipments as follows, for a level of radiation measurement by pocket dosimeter which made by Arrow-Tech company, for heart rate and blood pressure measurement by TONOPORT V which made by GE medical systems company, for heat flux and skin temperature and energy expenditure measurement by Armband senseware 2000 which made by Bodymedia company. Result of experiment obtains as follows: 1) Individual radiation exposure is recorded 3.05 uSv at department of nuclear medicine and order as follows CT room, general radiograpic room, medical recording room, receipt room, general office room. Department of nuclear medicine more 1.5 times than other places. 2) Radiation accumulated dose is not related to Heat flux, Skin temperature, Energy expenditure. 3) Blood pressure is recorded equal to nuclear medical workers, general officer, general people about systolic blood pressure and diastolic blood pressure. Compared to blood pressure between nuclear medical works which is more radiation exposure and other workers was not changed. Consequently, more radiation exposed workers at nuclear medicine field doesn't have hazard.

• Korean Journal of Air-Conditioning and Refrigeration Engineering
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• v.4 no.4
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• pp.253-262
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• 1992

A numerical procedure is introduced to calculate local ventilation effectiveness using the definitions of local decay rate and local mean age. A low Reynolds number $k-{\varepsilon}$ model is implemented to calculate steady state turbulent velocity distributions, and a step-down method is used to calculate transient concentration distributions. Simulations are carried out for several different values of air change rates and several different diffuser angles in a two-dimensional model of a half scale office room. The results show that the local ventilation effectiveness within a room could vary significantly from one location to another. The nominal air change rate based on the assumption of complete mixing of room air does not provide the local ventilation effectiveness information. It is numerically proved that the local mean age distribution obtained from the transient calculation is equivalent to the steady state concentration distribution with homogeneously distributed contaminant sources.

• Proceedings of the Korean Institute of Interior Design Conference
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• 2001.05a
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• pp.29-34
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• 2001

The purpose of this study is to provide a practical planning guide for the actual conditions and the preference by user characteristics in one-room housing. The data collected through questionnaire surveys from the residents of one-room housing in kangnam & sinchon. 259 samples we collected and are analyzed by using SPSS-PC. The results are follows : 1) Students: Students prefer monthly rent, down town, of officetel type, 8-l0py room size, and semi-furnished 2)Business men: They prefer multi function housing mixed office and residence, down town, officetel type, 11-l5py, and fully furnished housing. 3)Newly marriged couples: Ordinary habitation site, apt type, 16-l8py ,and 5: 5 division of space(bedroom:others) 4) Old age: normal habitation site, residence-commerce complex building type, middle corridor type, and 11-l5py. 5)Couple+child: lease of deposit basis, apt complex site, and 16-l8py.

• Korean Institute of Interior Design Journal
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• v.24 no.3
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• pp.38-47
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• 2015

This study evaluated non-liturgical space of catholic churches based on the four principles of universal design; accessible design, supportive design, safety-oriented design, and adaptable design. To design those spaces in terms of supportive design principle, diaper exchanging station needs to be placed in the restroom. Findings of this study are as follows: In terms of accessible design, valid width of entrance door to each room(more than 800mm), installation of elevator, height of riser in the stair, and width of step board were appropriate, but there were many spaces where door sils were not removed. In terms of supportive design, notice board at teacher's room and installation of storage closet, and width of passage to office(more than 1,200mm) were also appropriate, but storage closet at a meeting and prayer room, and space for storing flowers appeared inappropriate. To design those spaces in terms of supportive design principle, diaper exchanging station needs to be placed in the restroom. In terms of safety-oriented design, installation of round-edged furniture, use of non-slip flooring material, installation of safety emergency bell at a restroom, and installation of wall handle were required. In terms of adaptable design, space for wheelchair users at each room, installation of the furniture that can adjust the height, installation of desk with different height at an office, installation of toilet and basin considering children were considered to be necessary.

• Journal of the Ergonomics Society of Korea
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• v.25 no.3
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• pp.97-103
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• 2006

Severities of musculoskeletal diseases (MSDs) have been recognized at the regular work such as manufacturing but incidence of MSDs are increasing also at the atypical work. The examples of those are health medical workers, office workers and service workers etc. Nurses among health medical workers are accomplishing to manage and recover the patients' health in the first place. Therefore, they are exposed to very stressful work conditions during caring the patients. This study was performed to analyze the musculoskeletal burdened work among nurses at a university hospital, in order to grasp the realities of the MSDs, analyze and prevent MSDs. We surveyed risk factors for ward, intensive care unit, delivery room, newborn room, operation room, function test room and central supply room at a university hospital in Seoul. It was executed for 2 months as the field study that was composed of simulation, real measurement, work motion assessment and subjective assessment. And the results were analyzed into ergonomics techniques. Works according to the criteria of musculoskeletal burdened work by the Ministry of Labor were scrub in operation room and heart ultrasonic function test. And a lot of works that need attention and management were also detected. So it should be required the education and systematic managements of MSDs for nurses.

• Korean Institute of Interior Design Journal
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• no.18
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• pp.31-37
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• 1999

This study aims to provide architectural basis of the new space planning in university library and anticipate direction in future. This study is to analyze the spatial transition in the existing facility, based on field observation of the domestic university library and on theoretical data from the related article. The result that include a transition of the existing facility and the present is as following as below. 1) Spatial transitions by networking are making specific system room. The minimum area of this specific system room is 33.95$m^2$. 2) Spatial transition by information service is forming computer room. the minimum area of a environmental carrel, which is possibly located to computer room, is 2.98~3.42$m^2$. 3) Spatial transition by spreading multimedia information is to make the multimedia information is to make the multimedia room. It is necessary to independent, flexibility, and extensionable space. 4) Library interior spatial transition by developing information technology is prospected that in case of reading room, office enlarge the scale, in case of stack decrease the scale. The university library must be kept up their function and also be functioned as electronic library which serve new information.

• Proceedings of the Korean Institute of Interior Design Conference
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• 2007.11a
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• pp.206-209
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• 2007

Today rapid change in information and economy takes the changing of office design. It is very important to understand about the needs of employees and working environment. To promote the efficiency and comfort of the working environment, diverse employee's working characteristic and individual requirements have been observed. To build a good working environment, flexibility of space and communication between employees and employer in the office are very important. Due to the business growth, "K" financial company requires more working space. The design idea for the main areas such as the executive officer's room, the reception, the elevator hall, the conference rooms and the working areas in this project targets the harmony of the functionality and the aesthetic. This project could be able to deliver more convenient and comfortable working place by adopting three main concepts, which are modern, simplicity and moderation.

• The Transactions of the Korean Institute of Electrical Engineers P
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• v.62 no.4
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• pp.164-168
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• 2013

Recently, in the elevator of the buildings, such as apartment and office building, the visitor monitoring cameras for surveillance, advertising LCD to provide a variety of information, emergency call devices, and safe driving information sensors are installed. A variety of multimedia data from these devices to the central control office, management office, or to guard room are transmitted in real-time. Each sub-systems in the elevator are installed with a separate lines and operated independently and use different management principals, so integrated management for each sub-systems are very difficult. In this study, we develop a new IP-based multi-channel video surveillance system which is integrated surveillance camera, emergency call devices, communications devices, various sensors in the elevator, DVR, ODM, and can manage all devices by two-way communication and integrated interface. And we evaluated the performance of the developed system.