• Journal of Korea Spatial Information System Society
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• v.7 no.3 s.15
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• pp.33-44
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• 2005

Recently, the weather has been influenced by the environmental pollution and the oil price has been risen because of the lack of resources. So, the weather and energy are influencing on not only enterprises or nations, but also individual daily life and economic activities very much. Because of these reasons, there are so many researches about management of solar radiation needed to develope solar energy as alternative energy. And many researchers are also interested in identifying the area according to changing characteristics of climate data. However, the researches have not developed how to apply the cluster analysis, retrieval and analytical results according to the characteristics of the area through data mining. In this paper, we design a data model of the data for storing and managing the climate data tested in twenty cities in the domestic area. And we provide the information according to the characteristics of the area after clustering the domestic climate data, using k-means clustering algorithm. And we suggest the way how to apply the department store and amusement park as an applied weather marketing. The proposed system is useful for constructing the database about the weather marketing and for providing the elements and analysis information.

• Journal of Fashion Business
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• v.14 no.4
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• pp.111-131
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• 2010

The purpose of this study is to compare the difference between Beijing and Seoul in women's winter street fashion, and suggest strategic methods to improve new competitiveness of the Korean fashion industry. The research was conducted by literature review and empirical research and photographs of winter street style were directly taken by a digital camera from December 28, 2008 to January 8, 2009. The survey was made at 9~11 A.M., 12~1 P.M., and 3~5 P.M. during midweek and weekend. Then 530 photographs(265 each city) of women of the 20s and 30s were selected by random sampling and five fashion professional including this researcher classified styles in accord with majority opinion on careful investigation. The results of comparing the 2008 winter street fashion in Beijing and Seoul show the highest frequency of easy casual style. In detail, while high frequency was found in romantic, classic, feminine, and romantic casual style in Seoul, easy casual and character casual style was prevalent in Beijing. The same frequency of sport casual style illustrates no differences between two cities. Unlike the prediction of the fashion industry that the preference of sport casual style would be increased under the influence of the Beijing Olympics 2008, high preference of easy casual reflects that Chinese women were more sensitive to the changes of their consumption trend. In clothing color, the achromatic color was prevalent in street style in Seoul, whereas multi-color were preferred in Beijing, suggesting a great difference. In the case of accessories, both areas preferred a tot bag but Beijing women preferred active shoulder bag and cross bag in sport casual style. Seoul women preferred pumps and sneakers, whereas Beijing women liked boots of different length according to style.

• Journal of Food Hygiene and Safety
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• v.4 no.1
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• pp.1-20
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• 1989

A survey for BHA (butyl hydroxy anisol), BHT(dibutyl hydroxy toluene), DHA (dehydroxy acetic acid), BA (benzoic acid), Sor. A. (Sorbic acid), POBA-Esters (P-hydroxy benzoic acid esters of ethyl, propyl, isopropyl, butyl and isobutyl), propionic acid, nitrite (as $N0_2$) and sulfites (as $S0_2$) of food additives which have much interesting to food consumers was carried out to assess the intake amount by Korean through the years of 1985-1987. Additive intakes were estimated by applying the determined a.dditive contents in the specific food to the specific daily food-intake amount obtained from the report of Korean national nutrition survey, and the level in cities were compared higher in general to that in rural communities, and the average level of the nation showed as follows; the estimated value of butyl hydroxy anisol and dibutyl hydroxy toluene in total was 0.017 mg, and 0.030 mg for dehydroxy acetic acid 0.064 mg for benzoic acid, 6.011 mg for sorbic acid, 0.247 mg for p-hydroxy benzoic acid eaters in total, 0.1438 mg for propionic acid 0.016 mg for nitrite ($N0_2$) and 0.022 mg for sulfite ($S0_2$) respectively, and those values were far below to that of FAO/WHO's ADls.

• The Journal of the Korean Society for Microbiology
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• v.21 no.1
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• pp.33-45
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• 1986

On hundred and forty stains of shigella cultures isolated from the twelve hygiene laboratories of cities and provincial general hospital laboratories in 1983 were tested for their resistance to thirteen antimicrobial drugs and their R-plasmid transfer. Antimicrobial drugs were used amikacin, ampicillin, cephalothin, chloramphenicol, gentamicin, kanamycin, nalidixic acid, rifampicin, streptamycin, tetracycline, tobramycin, cefoperazone and piperacillin. All strains were resistant to one or more of thirteen antimicrobial drugs but 94.3% were susceptible to amikacin, gentamicin and tobramycin of total isolated. The most strains commonly found resistance was to chloramphenicol (94%) followed by streptamycin (93%), tetracyline (92%) piperacillin (90%) ampicillin (83%), cefoperazone (42%), nalidixic acid (14%), cephalothin (17%), rifampicin (22%) and kanamycin (6%), sixty percent of strains among 140 were resistance to ampicillin, chloramphenicol, streptomycin, tetracycline at the same time. The transfer of drug resistance by conjugation was tested and ninety four strains (94.3%) were resistant to one or more drugs were found to transfer their drug resistance of E. coli. percentage of transfer frequency by conjugation was one strains (54%), the transfer frequency of drug resistance varied by donor strains and recipients, but not by selecting drugs. Resistance to nalidixic acid was not transferred by conjugation to recipients. Percentage of plasmid curing after the treatment of acriflavine, acridine orange was about 8%. Among strains cured two strains were tested compare original strains with them in biochemical properties in arginine dihydrolase and arabinose fermentation reaction. It was found to growth curves of No.2 shigella flexneri, serotype 1b, and its derivatives cured with acriflavine in $M{\ddot{u}}ller$ Hinton broth medium (pH 7.4, $38^{\circ}C$) by temperature Gradient Biophoto Recorder TN-1120 (Tokyo, Japan).

• Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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• v.21 no.3
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• pp.237-243
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• 2003

The complicated facilities on the ground have begun to be laid under the ground as increasing emphasis on the beauty of cities due to centralization. But, as the kind of the facilities have been concentrated on the narrow area, accidents occur due to the difficulty of maintenance and the inaccuracy of location information. In this study, first we constructed the field test model to compare with the method of underground probing. So, we could know that the electromagnetic induction method and GPR(Ground Penetration Radar) are useful. It was acquired the position information for the underground facilities using a RTK-GPS. As the result, we have analyzed the accurate position of the underground facility and show the way improving accuracy in detecting and surveying comparing with the traditional surveying method. Also, we hope to contribute the effective maintenance and prevention of disasters to the underground facility as using underground facilities 3D position with Arcview and building the DB of exact depth and underground facilities information system.

• Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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• v.25 no.6_1
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• pp.545-555
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• 2007

3D buildings are the most prominent feature comprising urban scene. A few of mega-cities in the globe are virtually reconstructed in photo-realistic 3D models, which becomes accessible by the public through the state-of-the-art online mapping services. A lot of research efforts have been made to develop automatic reconstruction technique of large-scale 3D building models from remotely sensed data. However, existing methods still produce irregular building polygons due to errors induced partly by uncalibrated sensor system, scene complexity and partly inappropriate sensor resolution to observed object scales. Thus, a geometric regularization technique is urgently required to rectify such irregular building polygons that are quickly captured from low sensory data. This paper aims to develop a new method for regularizing noise building outlines extracted from airborne LiDAR data, and to evaluate its performance in comparison with existing methods. These include Douglas-Peucker's polyline simplication, total least-squared adjustment, model hypothesis-verification, and rule-based rectification. Based on Minimum Description Length (MDL) principal, a new objective function, Geometric Minimum Description Length (GMDL), to regularize geometric noises is introduced to enhance the repetition of identical line directionality, regular angle transition and to minimize the number of vertices used. After generating hypothetical regularized models, a global optimum of the geometric regularity is achieved by verifying the entire solution space. A comparative evaluation of the proposed geometric regulator is conducted using both simulated and real building vectors with various levels of noise. The results show that the GMDL outperforms the selected existing algorithms at the most of noise levels.

• Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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• v.27 no.4
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• pp.505-513
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• 2009

Recently, researches on the construction information for construction of high-tech cities are under performed. RTLS(Real-Time location system) for gathering the dynamic location information of construction resources in construction sites, such as workers, materials and equipments, is one of the developments. Especially, construction resources can be managed efficiently with the dynamic location information and the improvement of safety and the reduction of cost are expected. To introduce the RTLS to the construction sites, the installation location of AP(Access Point) must be simulated using the 3-dimensional visibility analysis considering the propagation distance of AP. In this research, 3-dimensional signal simulation software based on the spatial data using surveying terrestrial LiDAR is developed. The simulated results are compared with the signal strength of field experiments for 4 test sites. As a result, the signal strength from the propagation model is most similar to that of field experiment at the front of the main building and the maul playground of Konkuk University. The visibilities in that sites are higher than other sites. among 4 test sites.

• Korean Journal of Environmental Biology
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• v.17 no.1
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• pp.51-58
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• 1999

To investigate the distribution of nutritive salts and organic compounds in six stations at the coastal area of East Sea, environmental factors, nutritive salts, organic matters and chlorophyll were analysed four times from July 1994 to April 1995. The value of BOD in Ulsan Chuyongam was the highest among 6 stations. The concentration of nutritive salts was generally high through the investigation period near Pohang and Ulsan Chuyongam. From the value of dissolved nutrient salts, the Chuyongam area seemed to be under hyper-eutrophication and the Changsengpo area under eutrophication. Suspended particulate matter (SPM) of 3~10${\mu}{\textrm}{m}$ in size was distributed up to 70% of total volume. The amounts of SPM and particulate organic matter (POM) were considerably high in Pohang and Ulsan, which seemed to be resulted from the input of pollutants of cities and factories nearby.

• Journal of the Korean Regional Science Association
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• v.32 no.2
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• pp.15-29
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• 2016

Suburbs rural areas in the Capital region have been diversified by the influence of the Seoul and large cities for the last 10 years. This study aims to classify suburban rural areas and to analyze the differentiated characteristics of different types in order to propose more area-specific policy approach to suburban rural areas in the Capital region. Using the cluster analysis method, the suburban rural areas in the Capital region have been classified into four types; garden villages in rural areas, urbanization areas, agricultural-industrial mixed use areas, general rural areas. The result of this study shows that the four types of suburban rural areas are much differentiated one another in terms of internal characteristics and local dynamics and problems. In order to suburban rural sustainable development in the Capital region, the policy efforts should be address the area-specific problems and policy demand for each type of suburban rural areas.

• Journal of Preventive Medicine and Public Health
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• v.27 no.2 s.46
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• pp.326-336
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• 1994

Due to rapid industrialization and economic development since 1970's, Seoul has become known as one of the most heavily polluted cities in the world. This is especially because of its air pollution. This study was conducted to characterize the cancer risk from organic pollutants in the suspended particulates of Seoul. Extractable organic matter (EOM) and PAHs in Shinchon, a major traffic area, were measured monthly in two periods of Aug. $1987{\sim}sep.$ 1988, and Sep. $1990{\sim}Aug.$ 1991. While the differences both of EOM and benzo(a)pyrene concentrations between these two periods were not significant (P>0.05), the differences between heating and non-heating seasons were significant (p<0.01). The estimated mean concentrations of EOM and benzo(a)pyrene in fine particles in non-heating season were $3.98{\mu}g/m^3\;and\;0.51ng/m^3$ respectively, and in heating season were $6.75{\mu}g/m^3\;and\;2.96ng/m^3$ respectively, in these two periods combined. The calculated risk from EOM was compared with that from benzo(a)pyrene and also these values were compared with the level of acceptable risk.