• 대한전기학회:학술대회논문집
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• 대한전기학회 1999년도 하계학술대회 논문집 E
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• pp.2004-2006
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• 1999

In this paper, double Cylindrical type ozonizer has been designed and manufactured to improve ozone yield by cooling external electrode. The ozonizer equipped with three electrodes ( central, internal and external electrodes ). Discharge and ozone characteristics are described in this paper by varying the flow rate( Q ) of oxygen supplied gas, temperature of cooling gas and supplied voltage.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2000년도 하계학술대회 논문집 C
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• pp.2156-2158
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• 2000

Proposals on optimized ignition type of fluorescent fixtures by comparing electrical and optical characteristics for magnetic ballast and electronic starter type, magnetic ballast and glow starter and electronic ballast.

• 대한전기학회논문지:전기기기및에너지변환시스템부문B
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• 제53권3호
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• pp.135-142
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• 2004

In this paper, the magnetic circuit characteristics and the current/torque analysis of a Spoke Type permanent magnet motor have been researched, compared with the SPM Type motor. In the magnetic circuit analysis, the characteristic of air-gap flux density has been analyzed according to the variation of the number of pole and the ratio of magnet height to arc length using finite element method and circuit equations. Moreover, the electromagnetic and the reluctance torque have been analyzed by the current profile, which is obtained from the variation of turn-on angle, and these informative data has been utilized for the overall characteristics of the Spoke Type BLDC motor.

• 패션비즈니스
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• 제26권2호
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• pp.67-82
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• 2022

This study was aimed to investigate the differences in satisfaction and repurchase intention of leggings focused on women who have ever worn leggings. The participants were women in their 10s-50s who were residing in Busan and Gyeongnam, Korea. The survey was taken between July 3rd and 28th, 2021. A total of 313 questionnaires were completed and used in the statistical analysis. The data were analyzed with 𝛘²-test, t-test, ANOVA, etc. using the SPSS. The leggings wearing by demographic characteristics were significantly different for age, monthly income, and occupation. The factors related to leggings postpurchase satisfaction were identified as reshaping body type and utilization, wearing sensation and functionality, design and price, colorfastness to laundry, and quality. As a result of analyzing the difference for leggings postpurchase satisfaction by demographic characteristics, colorfastness to laundry, and quality were significantly different by marital status, reshaping body type and utilization, design and price, and colorfastness to laundry, and quality were significantly different by age. All postpurchase satisfaction factors were significantly different by monthly income. Design and price, colorfastness to laundry, and quality were significantly different by occupation. The variables influencing the level of leggings satisfaction were wearing sensation and functionality, followed by design and price, reshaping body type and utilization, and colorfastness to laundry and quality. The repurchase intention of leggings was significantly different by age and monthly income. The variables influencing repurchase intention of leggings were design and price, followed by reshaping body type and utilization.

• 대한건축학회논문집:계획계
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• 제35권2호
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• pp.43-52
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• 2019

The purpose of this study is to classify the building layout and plan types according to the urban location, use and function of civil and to analyze the characteristics by the type classified. After constructing a framework (Mathia type, Nagaya type, Detached House type) for analyzing Modern Private Housing Architecture in Gunsan, the research was conducted on 30 representative buildings, and a plot plan, a floor plan and elevation were created. After analyzing the relationship between the lot of land and the urban street, we classified the type of arrangement into Mathia type and Nagaya type which directly enter the building from the road, and derived the Detached House type which indirectly enters from the road. When we look at the use of the derived arrangement types, most of the Mathia type are commercial and residential buildings, and some of them are specially designed for commercial buildings. The Nagaya type appears in the form of commercial and residential house or residential private house, and the Detached House type is classified as residential style. As a relation with the urban street, the Mathia type and the Nagaya type are generally located on the main urban street, whereas the Detached House type is located on the small urban street. As a result of analyzing, the floor plan was changed according to the plot plan. The plan of the Mathia and Nagaya type are arranged to enter directly from the street, with commercial space being mainly located on the street, and the residential space being composed on the back or the second floor. the plan of the Detached House is a type that enters indirectly into the interior through a separate space (Courtyard), and forms an organic space between the residential interior and the front and rear yard. The purpose of this study is to investigate the Characteristics of a plot plan and a floor plan of Modern Private Housing Architecture in Gunsan by means of analysis considering the urban street, Uses of buildings, Construction method and the yard through actual measurement.

• 국토계획
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• 제54권6호
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• pp.27-42
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• 2019

The purpose of this study is to identify the spatial characteristics of the parcels in which building construction occurred. In recent, urban development patterns in Korea have been shifting from the past. Small-scale development at parcel level is becoming more important in accordance with individual location needs in the low-growth era unlike public lead large-scale urban development in the rapid growth period. Therefore, it is necessary to study the spatial characteristics of the parcels where small-scale development takes place for future urban development management. This study used the chi square independence test, t-test and ANOVA (analysis of variance) to identify the spatial characteristics. The results of the study show that there is a spatial characteristics difference not only between building construction and non-building construction parcels, but also by type of building construction. The parcel where the building construction occurred have a higher proportion in detached house, major commercial districts, district unit planning areas, and commercial areas. In addition, it is caused by parcels, which are large scale and economically valuable, and are influenced by traffic factors such as urban centers and subway accessibility. As a result of each type of building construction, the parcels where the building use change occurred have spatial characteristic difference compared to other building construction, while the spatial characteristics are similar between the new construction/extension and new construction/extension with change of use. Based on this results, it will be possible to identify areas with high demand for small-scale development in the future and to utilize them for planning management of urban development. Furthermore, it will be possible to manage development demand by type of building construction, and to prepare differentiated plans considering the appropriateness of development plan, availability of infrastructure, and harmony with surrounding environment.

• 토지주택연구
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• 제11권2호
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• pp.25-32
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• 2020

This study classified and analyzed characteristics of residents in public rental housing based on data from the 2018 Housing Survey. First, in order to classify the type of public rental housing resident, the criteria were derived through factor analysis based on the satisfaction evaluation index. Next, based on the factor value, the group was classified by type through cluster analysis, and the satisfaction, characteristics of residential households, and characteristics of rental housing types were analyzed for each cluster. As a result of factor analysis, evaluation of housing facilities, accessibility, and residential comfort was selected as the cluster classification criteria, and a total of four clusters were derived through cluster analysis. As a result of analyzing the characteristics of each cluster, it was found that there was a statistically significant difference in the level of residential satisfaction, characteristics of residents, and detailed types of rental housing. The results of this analysis are expected to be used to improve existing public rental housing or develop new types of rental housing to match the characteristics of residential housing for public rental housing. In addition, in the type integration of rental housing currently being promoted, it is necessary to develop a method of providing differentiated services in consideration of the characteristics of tenants as well as the integration of physical housing types.

• 한국의류산업학회지
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• 제11권5호
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• pp.732-740
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• 2009

The purpose of this study was to classify consumers by orientation of clothing shopping and to analyze the type of preference store and recognized environmental elements of clothing shop. This survey was carried out through questionnaires of 312 females(Busan region) in their twenties and the data were analyzed by using Factor analysis, Cluster analysis, one-way ANOVA, Duncan test as a post identification and ${\chi}^2$-test. The results of this research can be summarizedas follows: First, orientations of clothing shopping consisted of pleasure shopping orientation, planned shopping orientation, brand shopping orientation, and information of store orientation. The respondents were classified into four groups by these characteristics: high interested shopping group, brand-oriented shopping group, low interested shopping group, and unplanned shopping group. These groups had different type of preference store and there were significantly different preferences among department store, brand agency and regular discount store. The recognized environmental elements of clothing shop were service policy, store atmosphere, store layout, trend of products, product variety, freedom of shopping, and reception service. The groups by characteristics of clothing shopping had different attitude regarding those factors. Especially, they are susceptible to store atmosphere, trend of products and reception service. There was the correlation between type of preference store and environmental elements of store and mainly recognized environmental elements of clothing shop had differences according to type of store.

• 한국분무공학회지
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• 제18권4호
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• pp.202-208
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• 2013

The present study aims to investigate the flow characteristics with respect to fuel type and equivalence ratio in the flame spray coating process. The flame spray flow is characterized by much complex phenomena including combustion, turbulent flows, and combined heat transfer. The present study numerically simulated the flam spray process and examined the gas dynamics involving combustion, gas temperature and velocity distributions in flame spray process by using commercial computational fluid dynamics (CFD) code of FLUENT (ver. 13.0). In particular, we studied the effect of fuel type and equivalence ratio on thermal and flow characteristics which could substantially affect the coating performance. From the results, it was found that the gas temperature distributions were varied with different fuels because of reaction times were different according to the fuel type. The equivalence ratio also could change the spatial flame distribution and the characteristics of coated layer on the substrate.

• 대한설비공학회:학술대회논문집
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• 대한설비공학회 2007년도 동계학술발표대회 논문집
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• pp.176-181
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• 2007

This study aims to evaluate theoretically heat transfer characteristics and heat flux performance in ondol system of dried type is composed of panel of ceramics to improve of thermal conductivity and fin to expand heat. To this end, we analyzed effect of design factors(temperature of hot water, set temperature of room and thermal conductivity of finishing materials) in ondol system of dried type by heat transfer analysis. The main results of this study are summarized as follows; The deviation of heat flux and temperature was reduced by heat expansion from fin decreasing heat loss generated in air layer. The temperature and heat flux in upper finishing materials surface linearly increased according to temperature increment of hot water, but the temperature distribution in upper surface was assessed uneven. The greater heat resistance value of upper finishing materials, the deviation of maximum temperature and minimum temperature was decreased. Also, we suggested a basic design data about ondol system of dried type through an analysis of simulation results on heat transfer characteristics and heat flux performance.