• Journal of Dental Rehabilitation and Applied Science
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• v.31 no.4
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• pp.283-293
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• 2015

Purpose: The aims of this study are to analyze and to visualize distribution of patients visiting at a dental college hospital, using geographic information system (GIS). The visualized data can be utilized in patient care and treatment planning, ultimately leading to the assessment of risk evaluation and prevention of dental diseases. Materials and Methods: Patient information data was obtained from Dankook University Dental Hospital including the unit number, gender, date of birth, and address from 2007 to 2014. Patient distribution was visualized using GIS. Statistical analyses were performed using SAS 9.3 and ArcGIS 10.1. Five factors including proximity, accessibility, age, gender, and socioeconomic status were investigated as the explanatory variables of the patient distribution. Results: The visualized patient data showed a nationwide scale of the patient distribution. There was a little difference in characteristics for each department. As closer at Dankook University Dental Hospital, visitors increased. And it strongly showed that elderly patients in rural areas tend to visit more. Conclusion: The distribution of patients has been shown to be significantly affected by the proximity, accessibility, age, gender and socioeconomic status. The underlying reason remains to be further studied.

• Journal of the Korean Geographical Society
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• v.41 no.5 s.116
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• pp.582-599
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• 2006

Due to the growing popularity of mobile information technology, more people, especially in the general public, have access to computerized geospatial information systems for wayfinding tasks or urban navigation. One of the problems with the current services is that, whether the users are exploring or navigating, whether they are travelers who are totally new to a region or long-term residents who have a fair amount of regional knowledge, the same method is applied and the direction are given in the same way. However, spatial knowledge for a given urban region expands in proportion to residency. Urban navigation is highly dependent on cognitive mental images, which is developed through spatial experience and social communication. Thus, the wayfinding service for a regional community can be highly supported, using well-known regional places. This research is to develop the framework for urban navigation within a regional community. The concept of communal ontology is proposed to aid in urban regional navigation. The experimental work was implemented with case study to collect regional landmarks, develop the ontological model and represent it with formal structure. The final product of this study will provide the geographical information of a region to the other agent and be the fundamental information structure for cognitive urban regional navigation.

• Journal of Korean Society of Forest Science
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• v.101 no.2
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• pp.185-194
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• 2012

The purpose of this contribution is to develop the framework of a methodology for identifying potential errors in georeferencing and in an application of it using specimens of Ox-Knee, Achyranthes bidentata Blume in Korea. At infraspecific level, uncertainty of identification showed that 41% of A. bidentata var. japonica and 28% of var. bidentata were misidentified, suggesting that the uncertainty level was independent of the reliability of experts' identification. For georeference specimen records, 71 specimens out of total 303 were selected and utilized as occurrence data: Uncertainty was 32.4 km at maximum and was 0.1297 km at minimum (mean = 4,055 m, s.d. = 5,772 m). Var. japonica is common throughout most of the southeastern Korea and west coastal areas, while var. bidentata has been found as far north as Gyeonggi and Gangwon provinces. We modelled the potential distribution of two varieties using Bioclim approach in Korea based on several environmental factors. Our results indicated the most important region for var. japonica lies the west coast ranges and southern area, while for Chungcheongnam-do of potential high diversity occurs for var. bidentata. This study shows that the major factors to determine the distribution patterns of two varieties were thermal factors, rather than precipitation. The Bioclim model using geocode and georeferencing data makes the information increasingly useful and reliable. To improve data quality, it requires full management from data collection to final databases including data cleaning.

• Journal of Korea Spatial Information System Society
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• v.2 no.2 s.4
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• pp.75-84
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• 2000

GIS has been building for various application fields with the aids of NGIS project, especially numerous municipal governments are building a UIS in the level of local governments' informatization. Although there are some difference between municipal governments' business, still many things are in common. So far, individual municipal governments have developed a UIS for their own use, which lead to duplicated development of the UIS. The component technology has been introduced to remove such duplicated efforts and it enabled maximizing the reusablilty of the UIS already developed. This paper proposes a component design for network analysis of the drinking water to calculate the amount of flow and the head loss. This component design provides the initial water amount to estimate the amount of the network flow and the head loss, thereby supports the decision making such as installation or extension of the pipe network. The process of the component design accompanies the business reengineering to support the standardized business work flow. Also, the design of the network analysis component uses the algorithms induced with UML specification. Based on the component design, the component development has been progressing and the network analysis system would be followed. In the near future, another component to integrate the network analysis and the business related to the drinking water needs to be developed.

• 한국공간정보시스템학회:학술대회논문집
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• 2000.06a
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• pp.181-186
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• 2000

국가지리정보체계사업을 시작으로 여러 응용분야에서 지리정보시스템을 구축하고 있으며, 특히 지자체에서는 도시정보화 차원에서 UIS(Urban Information System;도시정보시스템)를 구축하고 있다. 지자체의 업무들은 지자체의 상황에 따라 조금씩 차이를 보이지만 업무 단위로 따져 볼 때 공통적으로 수행되는 업무들이 많으며, 지리정보 관련 업무 또한 예외가 아니다. 지금까지 각 지자체의 도시정보시스템은 공통업무에 대하여 중복개발이 불가피 하였으며, 재사용성을 기대하기 어려웠다. 이런 비효율을 극복하는 방안으로 컴포넌트 기술이 대두되었으며, 컴포넌트 기술을 이용하여 업무변화에 유연하고 재활용을 극대화할 수 있는 업무 컴포넌트 개발이 필요한 시점이다. 본 논문은 지자체의 지리정보 관련 업무의 하나인 하수도 업무 중 하수배출용량 산정을 위한 하수도 관망해석 컴포넌트 설계를 제시하였다. 하수도 관망해석 컴포넌트는 하수배출용량을 산정하고, 하수 배출용량을 토대로 통수능이 부족한 하수관거를 추출하며, 통수능 부족 관거에 대하여 적정한 교체 관경 결정을 지원할 수 있도록 설계하였다 컴포넌트 설계과정은 표준업무를 지원할 수 있도록 업무분석을 수행하였으며, 이의 결과물로 하수도 관망해석 알고리즘을 도출하였으며, 알고리즘을 기반으로 하수도 관망해석 업무를 수행하는 하수도 관망해석 컴포넌트를 설계하고 설계 내용을 UML(Unified Modeling Language)로써 명세화 하였다. 현재 설계에 따라 하수도 관망해석 컴포넌트가 개발되고 있으며, 개발된 컴포넌트를 이용한 하수도 관망해석 시스템을 구축할 예정이다. 추후에는 하수도 관망해석 컴포넌트와 하수도 업무 컴포넌트와의 통합부분에 대한 연구가 진행되어야 할 것이다.7.0로 하고 표준(標準) EDTA 용액(溶液)을 소량(少量)넣고 8N-KOH로 pH $12{\sim}13$으로 하고 N-N 희석분말(稀釋粉末)을 지시약(指示藥) 으로써 표준(標準) EDTA 용액(溶液)으로 적정(滴定)하여 Ca 치(値)를 얻었다. Ca와 Mg의 합계결정치(合計決定値)와 Ca 적정치(滴定値) 차(差)로 Mg 치(値)를 얻었다. 음(陰) ion 구분(區分)으로부터 상법(常法)에 의하여 $MgNH_4PO_4$의 침전(沈澱)을 만들어서 HCl에 녹키고 일정량(一定量)의 표준(標準) EDTA 용액(溶液)을 넣어 pH 7.0로 한다음 완충액(緩衝液)으로 pH 10으로 하고 BT 지시약(指示藥)을 써서 표준(標準) Mg $SO_4$용액(溶液)으로 적정(滴定)하여 P 치(値)를 얻었다. 본법(本法)으로 Na-phytate를 분석(分析)한 결과(結果) Na-phytate의 분자식(分子式)을 $C_6H_6O_{24}P_6Mg_4CaNa_2{\cdot}5H_2O$라고 하였을 때의 이론치(理論値)에 비(比)하여 P가 98.9% Cark 97.1%, Mg가 99.1%이고 통계처리(統計處理)한 결과분석치(結果分析値)와 이론치(理論値)는 잘 일치(一致)된다. 그러나 종래법(從來法)에 의(依)한 분석치(分析値)는 이론치(理論値)에 비(比)하여 P가 92.40%, Cark 86.80%, Mg가 93.80%로서 이론치(理論値)와 일치(一致)하지 않는다. 3) Na-phytate를 전분(澱粉)과 일정(一定)한 비(比)로 혼합(混合)하고 본법(本法)으로 P,Ca 및 Mc를 정량(定量)한 결과(結果) 이들의 회수율(回收率)은 거의 100%이었다. 4) 본분석법

• Journal of the Korean Association of Geographic Information Studies
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• v.2 no.1
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• pp.1-11
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• 1999

The Korean government is developing a systematic plan of integrated coastal management for effective conservation, utilization, and development of coastal areas. For this plan, integrated maps of land maps and nautical charts are indispensable. However, these maps are not made, nor studied yet in terms of integration, although digital maps(DM) on land and electronic nautical charts(ENC) have been recently developed by Korean Geography Institute and National Marine Investigation Institute, respectively. In this study, as preliminary studies to make eventual integrated maps, the concept of coastal areas are defined, specifically, coastal lines from DM and ENC are matched against each other. Issues on map production procedures, coordinate systems, and map projections, are carefully considered. A test coastal area located in Seo-Gu, Pusan, over 14 km of coastal lines is selected for the edge matching of coastal lines. RMS differences are 13.83 m and 4.37 m over man-made coastal lines and natural coast lines, respectively, which are quite larger considering a scale difference and other factors. However, no systematic differences are found.

• Korean Journal of Environment and Ecology
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• v.35 no.3
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• pp.294-304
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• 2021

This study aims to obtain basic data for systematic restoration by analyzing the monitoring results of the Shimwon Valley Ecological Landscape Restoration Project area in Jirisan National Park. In 2017, when the restoration project was completed, 12 monitoring plots and 4 control plots were installed for vegetation monitoring, and changes in the relative dominance, species diversity index and similarity between 2017 and 2020 were analyzed. The species diversity index of the surveyed areas where trees were planted during the restoration project was 0-1.4552, and the similarity index with the control group was 0% except for one survey area at 1.32%. The very low species diversity index and similarity index in the survey areas were attributed to the loss of trees planted during the restoration project due to death, damage by wild boars, or erosion by running water. On the other hand, the species diversity index was 0.9538-2.3222 in the monitoring plot where no tree was planted, and the similarity index was analyzed to be as high as 8.33%. It is necessary to continue the long-term monitoring for the development of ecological landscape restoration methods in the national park and analysis of the succession in monitoring plots where no trees were planted.

• Journal of the Korean Association of Geographic Information Studies
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• v.17 no.4
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• pp.101-111
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• 2014

Spatial events are predictable using data mining classification algorithms. Decision trees have been used as one of representative classification algorithms. And they were normally used in the classification tasks that have label class values. However since using rule ranking methods, spatial prediction have been applied in the spatial prediction problems. This paper compared rule ranking methods for the spatial prediction application using a decision tree. For the comparison experiment, C4.5 decision tree algorithm, and rule ranking methods such as Laplace, M-estimate and m-branch were implemented. As a spatial prediction case study, landslide which is one of representative spatial event occurs in the natural environment was applied. Among the rule ranking methods, in the results of accuracy evaluation, m-branch showed the better accuracy than other methods. However in case of m-brach and M-estimate required additional time-consuming procedure for searching optimal parameter values. Thus according to the application areas, the methods can be selectively used. The spatial prediction using a decision tree can be used not only for spatial predictions, but also for causal analysis in the specific event occurrence location.

• Journal of KIISE:Databases
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• v.29 no.4
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• pp.321-333
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• 2002

As web-based services are becoming more and more popular, concurrent updates of spatial data should be possible in the web-based environments in order to use the various services. Web-based GIS applications are characterized by large quantity of data providing and these data should be continuously updated according to various user's requirements. Faced with such an enormous data providing system, it is inefficient for a server to do all of the works of updating spatial data requested by clients. Besides, the HTTP protocol used in the web environment is established under the assumption of 'Connectionless'and 'Stateless'. Lots of problems may occur if the scheme of transaction processing based on the LAN environment is directly applied to the web environment. Especially for long transactions of updating spatial data, it is very difficult to control the concurrency among clients and to keep the consistency of the server data. This paper proposes a solution of keeping consistency during updating directly spatial data in the client-side by resolving the Dormancy Region Lock problem caused by the 'Connectionless'and 'Stateless'feature of the HTTP protocol. The RX(Region-eXclusive) lock and the periodically sending of ALIVE_CLIENTi messages can solve this problem. The protocol designed here is verified as effective enough through implementing in the main memory spatial database system, called CyberMap.

• The Korean Nurse
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• v.24 no.4 s.132
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• pp.118-130
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• 1985

실행(practice)를 위주로 하는 전문직 교육은 실지 실습이나 임상교육등이 필수적이며 중요한 것은 주지의 사실이다. 그러나 전통적으로 대부분의 간호학교가 병원에 소속되어 있어서 간호 임상교육은 그 본 목적인 학생들의 학습보다는 오히려 병원 업무를 돕는 방향으로 잘못 전개되어왔다. 간호교육이 병원에 소속된 간호학교로 부터 학문의 전당인 대학안으로 옮겨지면서 많은 뜻있는 간호교육자들의 노력과 시도로 학생들이 고용인으로 이용되는 상황에서 탈피하여 임상교육이 학생들에게 이론적인 지식을 실지로 응용할 수 있는 복합적이고 통합적인 배움의 경험이 되도록 조금씩 발전해 가고는 있지만 아직도 바라는 만큼 이루어지지는 못하는 실정이다. 현재는 임상실습에 임하는 학생들이 기능적인 일을 반복하며 주어진 시간만을 채우는 경향이 많고 배운 이론을 대학 실습실에서 응용해 보지 못한채 직접 환자 간호에 적응하려면 지나친 불안과 긴장으로 오히려 학습에 장애가 오기도 한다. 또한 환자의 입장을 고려해 보면 그들은 안전하고 완벽한 간호를 받을 권리가 있음에도 불구하고 때로 서투른 학생들의 실습의 대상으로 노출되어 불안을 느끼고 바람직한 간호를 받지 못하는 경우가 많다. 따라서 몇 뜻있는 간호 교육자들은 임상들의 실습장소로 택하는 것은 학생에게는 부적절한 학습 환경이 될 뿐 아니라 환자에게는 도덕적, 윤리적으로 부당하다고 주장한다. 본 연구는 좀 더 잘 설비된 대학의 실습실이 급선무이고 또한 교화적이고 창의적인 실습실의 이용으로 반복적인 임상 실습의 양은 줄이는 한편 학생들의 실력이나 적용 능력의 토대를 탄탄히 하는 몇가지 교육방법을 제시하였다. 물론 제시된 시법이나 작은 그룹별 학습등은 기초 간호학실에서 많이 이용된 방법이기는 하지만 더욱 잘 응용되어야하겠고 역할 재현(role play)이나 유사 상황(simulation) 조성등의 학습 방법으로 기술적인면 뿐만 아니라 대인 관계나 면담기술 및 창의적이며 논리적인 사고의 발달등도 이루어 지리라 기대된다.학생들이 적정량의 기술과 지식을 익힌 후에 좀 더 복합적이고 통괄적인 지식의 응용 및 평가가 필요할 때 실지 임상 실습을 시도하는 것이 바람직한 것이다.