• Environmental engineer
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• s.85
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• pp.4-5
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• 1993

• Journal of Korean Society for Geospatial Information Science
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• v.13 no.3 s.33
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• pp.53-57
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• 2005

The moors ecosystem is sensitive environment change and weak in artificial interference. These nature property are very important to people. It is necessary to preservation and protection the moors with a countermeasure. We really need to Environment-GIS(E-GIS) using Geographical Information System(GIS) and digital map including range, correct position and attribute data of moors. In this study, we take priority of making a database of moors management. Taking effect an environment assesment, we concentrate on a standard method of digital map production and a preservation of moors in our research using GIS. Especially, we have to preserve our important national heritage using GIS when Environment Assesment is conducting under construction. We suggest to pre-estimated model of hidden moors as analysing terrain, geological feature, a geographical distribution of plants and animals using GIS.

• Earthquakes and Structures
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• v.17 no.6
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• pp.557-566
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• 2019

The evaluation of the seismic hazard for a given site is to estimate the seismic ground motion at the surface. This is the result of the combination of the action of the seismic source, which generates seismic waves, the propagation of these waves between the source and the site, and site local conditions. The aim of this work is to evaluate the sensitivity of dynamic response of extended structures to spatial variable ground motions (SVGM). All factors of spatial variability of ground motion are considered, especially local site effect. In this paper, a method is presented to simulate spatially varying earthquake ground motions. The scheme for generating spatially varying ground motions is established for spatial locations on the ground surface with varying site conditions. In this proposed method, two steps are necessary. Firstly, the base rock motions are assumed to have the same intensity and are modelled with a filtered Tajimi-Kanai power spectral density function. An empirical coherency loss model is used to define spatial variable seismic ground motions at the base rock. In the second step, power spectral density function of ground motion on surface is derived by considering site amplification effect based on the one dimensional seismic wave propagation theory. Several dynamics analysis of a curved viaduct to various cases of spatially varying seismic ground motions are performed. For comparison, responses to uniform ground motion, to spatial ground motions without considering local site effect, to spatial ground motions with considering coherency loss, phase delay and local site effects are also calculated. The results showed that the generated seismic signals are strongly conditioned by the local site effect. In the same sense, the dynamic response of the viaduct is very sensitive of the variation of local geological conditions of the site. The effect of neglecting local site effect in dynamic analysis gives rise to a significant underestimation of the seismic demand of the structure.

• Proceedings of the Korean Institute Of Construction Engineering and Management
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• autumn
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• pp.439-443
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• 2001

A lot of buildings, especially apartment housing, have been dismantled so as to enhance the value of the building without exact assesment for the service life and deterioration degree of the building. Remodeling for an aged building is becoming a hot issue to owners in the public sector and the private sector. Peoples including owner, tenants, constructors recognize the fact that the efficient maintenance of the building during the service life and lengthening the practical service life are very important in point of minimizing LCC. This study suggest a decision making system to judge whether to remodel(renovate) or to reconstruct an aged building. The system is composed of structural performance assesment elapsed(or practical service) life evaluation against whole service life, deterioration assesment of the building equipment, dweller's satisfaction, etc.

• Journal of Applied Reliability
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• v.4 no.2
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• pp.73-90
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• 2004

We performed the heat aging test to predict the useful lifetime of Elastomeric Bearing Chloroprene Rubber (CR) used for supporting bridge. During the test, we measured elongation that are influenced by temperature and aging time. The failure of a test piece is defined as the point at which the elongation reaches to 75% of the initial value. This failure criterion is based on KS F 4420: 1998 (Elastomeric Bearing for bridge). Through the accelerated heat aging test, we found that the Arrhenius relationship and the Weibull lifetime distribution are appropriate as the life-temperature relationship and lifetime distribution of the CR, respectively. Using the Arrhenius -Weibull model, the parameters of the model are estimated and the lifetime of the CR at use condition is predicted.

• The Journal of Korea CHUNA Manual Medicine
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• v.1 no.1
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• pp.55-65
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• 2000

The present study retrospectively investigated clinical outcome at patients with low back pain or sciatica during Chuna treatment (flexion-distraction technique). The study population consisted of 29 patients. Discogenic group consisted of 21 patients who were already diagnosed as HNP of lumbar spine with serial MRIs(magnetic resonance imaging) or CTs(computerized tomography). Simple LBP group consisted of 8 patients with low back pain & sciatica who were non-specific disorder on radiologic examination. All patients were treated with flexion-distraction technique, one of Chuna technique, under analysis of Moire Topography. And the evaluation of clinical outcome was done twice during this study by Moire Topography Analytic Point and Low Back Pain Assesment, Visual Analogue Scale. The results were summarized as follows; Total improvement rate of Moire Topography was $25.8{\pm}17.8%$, and the rate of Low Back Pain Assesment was $56.5{\pm}23.0%$, Visual Analogue Scale of post-treatment was $32.6{\pm}22.5$ Between Improvement rate of Moire Topography and improvement rate of Low Back Pain Assesment, significant correlation was proved(Person's coefficient was 0.381, p<0.05). After all, it is certain improvement of Moire Topography represents symptom's improvement.

• Proceedings of the Korean Society of Soil and Groundwater Environment Conference
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• 2002.09a
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• pp.75-80
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• 2002

Enormous volumes of mining wastes from the abandoned and closed mines are disposed without a proper treatment at Southeastern part of Kangwon Province. Erosion of these wastes contaminates soil, surface water, and sediments with heavy metals. Objectives of this research were to fractionate heavy metals in the mine waste and to assess the potential S. P. A. G.(Soil Pollution Assesment Guidance) of each metal fraction. Mine wastes analyzed for physical and chemical properties. pH of wastes ranged from 3.3 to 8.0. Contents of total N and loss on ignition matter were in the ranges of 0.2~5.6%, and 0.8~15.3%, respectively. Heavy metals in the wastes were higher in the coal mines than those in the other mine wastes. Total concentrations of metals in the wastes were in the orders of Pb > Zn > Cu > Cd, exceeded the corrective action level of the Soil Environment Conservation Law and higher than the natural abundance levels reported from uncontaminated soils. Relative distribution of heavy metal fractions was residual > organic > reducible > carbonate > adsorbed, reversing the degree of metal bioavailability. Mobile fractions of metals were relatively small compared to the total concentrations. Soil Pollution Assesment Guidance(SPAG) values were ranged from 0.08 to 9.14 based on labile fraction of metal concentrations. SPAG values of labile concentration were lower than those of total concentration.

• Journal of Korean Home Economics Education Association
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• v.14 no.3
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• pp.51-64
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• 2002

The Purposes of This Study is to investigate the relationships among Multiple Intelligence(MI). Creativity and Home Economics achievements of the middle & high school students. The research of this study are performed as follows Subject of this study were 142 middle school student & 127 girls' high school. And The “Creativity Test” developed by Korean Creativity Research Institute(1998). Multiple Developmental Assesment scale were administrated as data gathering tools And end-term exam scores on 9 subject were collected as the measure of academic achievement. Especially the Home Economics achievement were collected with Written test and performance assesment. The data were analysed by pearson's correlation. The findings of this study were as follows: 1) A statistically significant correlation among the MI and Home Economics achievements in middle school students(linguistic, Logical-mathematical. Musical. Interpersonal, Intrapersonal) and high school students(linguistic, Logical-mathematical, Interpersonal) were found. But There were not statistical difference between another 8 subjects. 2) In middle school students. a statistically significant correlation among the creativity and Home Economics achievements were found But in high school students, statistically significant correlation among the creativity and Home Economics achievements were not found 3) In MI and Home Economics achievements correlation. there were not difference between written test and performance assesment.

• The Korean Journal of Health Service Management
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• v.12 no.4
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• pp.103-113
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• 2018

Objectives: The study aimed to compare the indicators of infrastructure of the whole country with those of Busan through National Medical Care Psychiatric (hospital level) Quality Assesment and to provide the basic evidence for presenting vision and strategies of mental health policy. Methods: National Medical Care Psychiatric (hospital level) Quality Assesment Data was used from 2011 to 2015. A total of 8 indicators were analyzed including facility and workforce. Results: The median value of the capacity per ward was decreasing with years both whole country and Busan. The number of beds out of total inpatient occupancy was improved over the years. There was no clear change in the number of inpatients per toilet in the hospitalized ward, but the indicator was decreasing obviously. Therefore, the median value of whole country and Busan was same with 10.2 in 2015. Conclusions: We confirmed that indicators for infrastructure were improving in a generally positive change over the years. The infrastructure is related to the patient-centered treatment environment, and the workforce is related to the quality of care. Therefore, the structural area should be continuously evaluated and improved.

• Proceedings of the KOR-KST Conference
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• 1999.10a
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• pp.85-89
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• 1999