• Journal of the Korean Society of Environmental Restoration Technology
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• v.18 no.6
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• pp.167-177
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• 2015

This study was conducted to establish an inventory and propose conservation strategies for 'village wetlands' in Asan city, Korea, using GIS. As results, the village wetlands are defined as such places as 'palustrine' wetland, village embankment, agricultural reservoir or small reservoirs located in or near the village and related to everyday life or farming. Firstly 807 provisional village wetlands(draft) were identified in Asan by using Arc-GIS 10.1, then 196 wetlands(final) were defined finally as village wetlands and listed the inventory of Asan Village Wetlands after being validated through office works and field survey. The office works analyzed minimum area(greater than $625m^2$), satellite images, the Korea Land Information System, land use map and land coverage map. To evaluate the function and conservation values, the 37 wetlands were selected for detailed surveying and function assessment based on the following criteria : 1) doubled code both wetland and reservoir at digital map, 2) located less than 100m from village and 3) ecologically connected to such ecological resources as seaside mudflats, mountains and green area and ecological passages for small size wildlifes. As the result of the wetland function assessments by the RAM method, 7 wetlands were found to have 'high' wetland function (conservation) 18 wetlands were 'medium' (enhancement) and 12 wetlands were 'low' (restoration or enhancement). Enhancing biodiversity and ecosystem services through ecological management of wetlands in Asan and connecting with the Ecological Natural Degree were proposed.

• The Journal of Korean Academy of Prosthodontics
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• v.56 no.1
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• pp.17-24
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• 2018

Lost wax technique of casting wax patterns has been used principally to make metal frameworks of removable partial dentures. Since the development of digital technology and CAD, metal frameworks can be built through digital surveying and framework designing. Many cases proved that resin patterns made by CAD printing method were well adapted to internal oral structure and final metal frameworks also showed good internal adaptation as well. The metal frameworks of a removable partial denture were made by both lost wax technique and CAD technique and were applied to a patient with severe alveolar bone loss. Using CAD data and fit checker, internal adaptation of both metal frameworks were evaluated by comparing the gap between surveyed crown and its structure. This study is to prove that metal frameworks by both techniques showed adaptation that can be applied in clinical field.

• Proceedings of the Korean Institute Of Construction Engineering and Management
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• 2008.11a
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• pp.427-431
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• 2008

Recently, the thoughts of Employees about the concept of workspace changes a job for a whole life time into the temporary job for an own' career development. To solve the problem, it causes the introduction of Fun Management among Domestic Corporations as the research for a fun and good workspace and the interest for the organization performance through it are increasing. However, the introduction possibility based on enough comprehension for various problems such as the strict relationship in the workspace, the rigid situation on construction site, the increase in the safe accident and the social avoidance phenomena for the employment to construction field in case that the fun management is introduced into domestic construction industry in the future is considered. Therefore, this study to propose the possibility and direction regarding the future fun management, when introduced into the domestic construction industry, by surveying and analyzing the common problems between The present state of the fun management method which is introduced and applied to other industries in advance and the performance process of the fun management which introduced and applied to the domestic construction corporations.

• The Journal of Engineering Geology
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• v.2 no.1
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• pp.47-57
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• 1992

Geophysical methods applied to water seepage problem in earth-fill embankment attempt to detect and map the estimate of size and depth of the seepage path. Seepage zones generally produce lOW resistivity anomalies due to high saturation of water. Dipole-dipole resistivity surveying technique, which is actually a combined sounding-profiling procedure, was used to delineate the seepage path through this study. In this study, the finite difference methods to solve the electric potential distribution in 2 112 dimension, was adopted as the numerical scheme for the forward problem. Second order Marquart's method, one the iterative damped least square methods, was selected for the automatic inversion. The computer program was implemented in FORTRAN 77 for 1 6-bit personal computer. In this paper, we present a case history which illustrates the application of dipole-dipole resistivity method to the delineation of water flow in earth-fill structures. Also the automatic two-dimensional resistivity inversion was applied to a field data where the interpretive advantages of the program become evident.

• Proceedings of the KSRS Conference
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• 2005.10a
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• pp.353-356
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• 2005

In Taiwan, there are more the one hundred GPS tracking stations maintained by Ministry of the Interior (MOI), Academia Sinica, Central Weather Bureau and Central Geological Survey. In the further, they may be instead of the GPS controlling points after giving the lawful status. In other words, the engineers don't need to survey on the reference points when they are surveying in the field. They only need to download the GPS data via internet and process the observations in their company. The precise coordinates of the unknown points will be obtained. Therefore, the data qualities of the tracking stations are more and more important. In this study, six data quality indexes were adopted as follows: observations, cycle slips, multipath on L1, multipath on L2, clock offset and frequency stability. Besides, the relationships of the indexes and the positioning precision were found. The frequency stability of GPS receiver is the most important index, the cycle slip is the second index and the mutlipath is the third index. According to the results, the auto-analytical system of GPS data quality was established and the tracking stations were monitored. When the receiver got some problem or the station's environment changed, we hope to find and resolve the problems earlier to make sure the high data quality of the tracking stations. Moreover, we try to design a data quality verification to help users and let the engineers have more and more confidence when they use the data of GPS tracking stations.

• Journal of Korean Society for Atmospheric Environment
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• v.19 no.6
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• pp.701-717
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• 2003

The objective of this study was to extensively estimate the air quality trends of the study area by surveying con-centration trends in months or seasons, after analyzing the mass concentration of PM-10 samples and the inorganic lements, ion, and total carbon in PM-10. Also, the study introduced to apply the PMF (Positive Matrix Factoriza-tion) model that is useful when absence of the source profile. Thus the model was thought to be suitable in Korea that often has few information about pollution sources. After obtaining results from the PMF modeling, the existing sources at the study area were qualitatively identified The PM-10 particles collected on quartz fiber filters by a PM-10 high-vol air sampler for 3 years (Mar. 1999∼Dec.2001) in Kyung Hee University. The 25 chemical species (Al, Mn, Ti, V, Cr, Fe, Ni, Cu, Zn, As, Se, Cd, Ba, Ce, Pb, Si, N $a^{#}$, N $H_4$$^{+}$, $K^{+}$, $Mg^{2+}$, $Ca^{2+}$, C $l^{[-10]}$ , N $O_3$$^{[-10]}$ , S $O_4$$^{2-}$, TC) were analyzed by ICP-AES, IC, and EA after executing proper pre - treatments of each sample filter. The PMF model was intensively applied to estimate the quantitative contribution of air pollution sources based on the chemical information (128 samples and 25 chemical species). Through a case study of the PMF modeling for the PM-10 aerosols. the total of 11 factors were determined. The multiple linear regression analysis between the observed PM-10 mass concentration and the estimated G matrix had been performed following the FPEAK test. Finally the regression analysis provided source profiles (scaled F matrix). So, 11 sources were qualitatively identified, such as secondary aerosol related source, soil related source, waste incineration source, field burning source, fossil fuel combustion source, industry related source, motor vehicle source, oil/coal combustion source, non-ferrous metal source, and aged sea- salt source, respectively.ively.y.

• Research in Community and Public Health Nursing
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• v.20 no.4
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• pp.453-464
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• 2009

Purpose: This study was conducted to develop health education program components for early childhood and to investigate teachers' awareness of the importance of health education and their performance rate of health education. Methods: Early childhood health education program components were developed using two rounds of the Delphi method. The Delphi group consisted of 21 experts in childhood education. After health education program components were developed, they were used in surveying child care teachers' awareness of importance and performance rate and 151 teachers sampled from 30 child care centers participated in the survey. Results: The early childhood health education program components consisted of 5 areas, 16 subjects and 33 specific contents. Early childhood teachers' awareness of importance was over 4.5 points in all the areas and in 11 out of the 16 subjects. The most frequently educated subjects were 'the importance of hand washing' and the least frequently educated subject was 'obesity prevention'. The teachers' awareness of importance and their performance rate of specific contents were high in 'maintaining order' and 'using children's rides safely,' and low in 'obesity prevention' and 'infectious disease prevention.' Conclusion: The components of this health program were developed in consideration of field feasibility and the relationship of health program education in elementary, middle and high school.

• Korean Institute of Interior Design Journal
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• v.26 no.4
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• pp.65-74
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• 2017

The purpose of this study is to grasp the retention status of household items for children and the real condition of storage targeting dual career families of living in 3-bedroom apartment. To do this, a field survey was conducted by having subjects as 30 households of conforming with the requirements. This led to understanding kinds and quantities of household items for children inside the residence and to surveying the present status on household items of being stored by room, thereby having analyzed a difference in household items according to children's age. The survey results are as follows. First, the household items for children within dwelling were indicated to be totally 145 detailed items. In the quantities of the detailed items, a great difference was shown by age in clothes, books, teaching aids, toys, and stationery. Second, as a result of examining a place of being stored the household items for children, the household items in great quantities were found in living room, room 1, and room 3 even in addition to room 2 that is children's room. Third, in consequence of looking at the storage status of household items for children by age level, it could be known that very different household items are being used depending on children's age, and that a place of storing household items is much varied by age. This outcome could lead to being capable of knowing that one-child families living in 3-bedroom apartment are using every room focusing on child, and that child's household items are being disorderedly stored in each space, thereby requiring the systematic storage plans so much that reflect the real situation.

• The Journal of Engineering Geology
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• v.27 no.3
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• pp.207-215
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• 2017

The northern extension of the Dongrae Fault is inferred to transect the Ulsan Fault in the Gueo-ri area, Oedong-eup, ~15 km SE of Gyeongju City, Gyeongbuk province, S Korea. We conducted geological and geophysical (magnetic, electrical resistivity, and frequency domain electromagnetic) surveys to identify the extent and orientation of the Dongrae Fault in this region. Through joint interpretation of the geological and geophysical data sets, we confirm the presence of the Dongrae Fault and determine its strike ($N14^{\circ}E$). The Dongrae Fault is thought to cross the Ulsan Fault near Ipsil Bridge in the Gwangeo-ri area. Geophysical surveying revealed a fault damage zone that widens to the south, with a typical width of >200 m. Geological field surveys did not delineate the geometry of the Dongrae Fault because alluvial deposits overlie the fault in this area.

• Journal of Navigation and Port Research
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• v.32 no.8
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• pp.611-619
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• 2008

The Ministry of Land, Transport and Maritime Affairs is working on the construction of Nationwide DGPS(NDGPS) with connection to Maritime DGPS Reference Stations and if Chun-cheon Reference Station is to be completed in 2008, DGPS positioning information is available in the whole area of Republic of Korea. Therefore to promote the usage of DGPS surveying information, we measured and panalyzed the accuracy of DGPS. In real-time DGPS positioning accuracy were 0.42m of planar Root Mean Square(RMS) error in static survey and 0.48m of planar RMS error in dynamic survey. We went abreast with RTK comparison measurement. According to these results. DGPS positioning information cannot be applied directly to the GIS construction field, but GIS application fields, requiring the real-time positioning information. can take advantage of it in variable cases.