• 한국조경학회지
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• 제22권4호
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• pp.1-21
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• 1995

Parks in Kwang Ju ar determined by the development of a housing project under the regulations of land development rather than the planning approach of park provision. This study tries to identify who is the provider of parks, to estimate the size of urban parks per person in the area of the housing project, to look at the spatial allocation patterns of park provision and to identify the character profiles of users and the social profile of an ares(Dong). This research has produced the following major conclusions : 1. The city government should set up a master plan of park provision to control park delivery system to avoid maldistribution. 2. A positive discrimination policy should be introduced to disadvantaged areas in terms of park provision. 3. The null hypothesis - there is no relationship between distance and park Use - is rejected by the correlation rate of 0.4984. 4. The ratio of parks per a person ; 10.43㎡/person in 1990 has decreased to 10.41㎡ /person in 1994. This means that the increase of parks in terms of quantity could not catch up the increase of population.

• 한국농공학회지
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• 제34권E호
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• pp.1-11
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• 1992

Increasing national concern on nonpoint source pollution of surface and ground water Systems has led researchers and policy makers to develop certain agricultural Best Management Practices. As an initial step of broad study program above mentioned, this study reflected the effects of different tillage practice on bulk density and degree of saturation on two regional soils, namely Tama silt loam and Catlin silt loam. Results may help to clarify some of the conflicting findings on the impact of tillage systems on these parameters and it may also explain some of the reasons for specific role that different tillage systems play regarding nonpoint source pollution from agricultural fields.

• Annals of Occupational and Environmental Medicine
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• 제35권
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• pp.49.1-49.7
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• 2023

The Korean Working Conditions Survey (KWCS) is a state-approved statistical survey that has been conducted by the Occupational Safety and Health Research Institute (OSHRI) every 3 years since 2006 to monitor changes in the working conditions of Koreans. This cross-sectional national survey involves a sample of 50,000 employed people aged 15 or older. KWCS measures various working conditions through > 130 survey questions, including questions regarding working hours, labor intensity, work-life balance, degree of exposure to risk factors, and subjective health status. Professional survey interviewers visit households and conduct face to face interviews. KWCS provides data and statistics for occupational safety and health polices and research in Korea. Furthermore, OSHRI holds academic conferences every year, awards high-quality academic papers, and supports researchers using data. Microdata is publicly available through the OSHRI website (https://oshri.kosha.or.kr).

• 한국정보과학회논문지:컴퓨팅의 실제 및 레터
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• 제11권5호
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• pp.401-415
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• 2005

최근 무선통신 기술의 발전으로 PC뿐만 아니라 PDA, 휴대폰 등 다양한 이동 단말 장치를 통하여 멀티미디어 서비스를 제공받을 수 있게 되었다. 이동 단말 장치는 제한된 하드웨어 성능을 갖는 것 이외에 무선망에서 동작하므로 낮은 네트워크 대역폭을 사용하게 된다. 이러한 이동 단말기의 특성을 고려하여 스트리밍 미디어 서비스를 받기위해서는 동작 환경에 적합하게 미디어를 트랜스코딩 하는 기술이 필요하다. 미디어에 대한 트랜스코딩은 트랜스코딩 서버들에서 이동 단말기 등급별로 수행되어 스트리밍 미디어의 실시간 전송 요구사항에 맞추어 사용자에게 보내져야한다. 대규모의 이동 단말 사용자들에게 각각에 맞는 트랜스코딩 된 스트리밍 미디어를 QoS 하기위해서는 트랜스코딩 서버들의 부하분배 정책에 미디어의 등급별 특성을 반영하는 것이 필요하다 본 논문에서는 이동단말들의 등급별 자원가중치 및 트랜스코딩 서버에서의 등급별 최대 사용자 수에 기반 한 자원가중치 기반 부하분산 정책을 제안한다. 제안된 정책을 클러스터 기반 시스템에서 구현하여 트랜스코딩 서버들 사이에 부하배분이 균등하게 이루어짐을 확인하고 트랜스코딩 서버 개수의 증가에 따른 선형적 성능확장성을 평가한다.

• Wind and Structures
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• 제3권3호
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• pp.143-158
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• 2000

This report presents the findings of a one-year monitoring effort to empirically characterize and evaluate the nature of near-ground winds for structural engineering purposes. The current wind engineering practice in the United States does not explicitly consider certain important near-ground wind characteristics in typical rough terrain conditions and the possible effect on efficient design of low-rise structures, such as homes and other light-frame buildings that comprise most of the building population. Therefore, near ground wind data was collected for the purpose of comparing actual near-ground wind characteristics to the current U.S. wind engineering practice. The study provides data depicting variability of wind speeds, wind velocity profiles for a major thunderstorm event and a northeaster, and the influence of thunderstorms on annual extreme wind speeds at various heights above ground in a typical rough environment. Data showing the decrease in the power law exponent with increasing wind speed is also presented. It is demonstrated that near-ground wind speeds (i.e., less than 10 m above ground) are likely to be over-estimated in the current design practice by as much as 20 percent which may result in wind load over-estimate of about 50% for low-rise buildings in typical rough terrain. The importance of thunderstorm wind profiles on determination of design wind speeds and building loads (particularly for buildings substantially taller than 10 m) is also discussed. Recommendations are given for possible improvements to the current design practice in the United States with respect to low-rise buildings in rough terrain and for the need to study the impact of thunderstorm gust profile shapes on extreme value wind speed estimates and building loads.

• 한국대기환경학회지
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• 제24권3호
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• pp.284-299
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• 2008

Emission input modules was developed to produce emission input data and change some profiles for Sparse Matrix Operator Kernel Emissions (SMOKE) using Clean Air Policy Support System (CAPSS)'s activities and previous studies. Specially, this study was focused to improve chemical speciation and temporal allocation profiles of SMOKE. At first, SCC cord mapping was done. 579 SCC cords of CAPSS were matched with EPA's one. Temporal allocation profiles were changed using CAPSS monthly activities. And Chemical speciation profiles were substituted using Kang et al. (2000) and Lee et al. (2005) studies and Kim et al. (2005) study. Simulation in Seoul Metropolitan Area (Seoul, Incheon, Gyeonggi) using MM5, SMOKE and CMAQ modeling system was done for effect analysis of changed input modules of SMOKE. Emission model results adjusted with new input modules were slightly changed as compared to using EPA's default modules. SMOKE outputs shows that aldehyde emissions were decreased 4.78% after changing chemical profiles, increased 0.85% after implementing new temporal profiles. Toluene emissions were decreased 18.56% by changing chemical speciation profiles, increased 0.67% by replacing temporal profiles as well. Simulated results of air quality were also slightly elevated by using new input modules. Continuous accumulation of domestic data and studies to develop input system for air quality modeling would produce more improved results of air quality prediction.

• 컴퓨터교육학회논문지
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• 제13권6호
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• pp.91-98
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• 2010

NAC(Network Access Control)는 운영체제 보안 패치 미 적용 혹은 AV(Anti-Virus)미설치 컴퓨터 등 웜의 공격대상이 되어 내부망에 바이러스를 유포하는 엔드 포인트 사용자 보안에 대한 솔루션으로 개발되었다. 현재 시장에 상용화된 NAC 제품들이 경우 연결 전 보안기능(pre-connect)기술들은 많이 발전되어 있으나, 정상적인 인증을 통해 연결된 이후에 발생하는 위협을 탐지하는 위협 관리 기능(post-connect)이 대체적으로 부족한 상태이며, 이에 따라 Zero-day 공격, 악성코드 감염 등으로 NAC 사용자들이 지속적으로 피해를 입고 있는 상황이다. 본 논문에서는 이러한 post-connect단계에서의 문제점을 해결하고자 기존에 사용되던 단말에 대한 인증과 정책 위반 여부 검사 외에 각 단말이 발생시키는 트래픽 정보와 Agent를 통해 획득한 각 단말의 정보, 그리고 Network Scanner에서 획득한 Open Port와 네트워크 구성 변경 정보를 활용하여 정상 Behavior profile을 생성하고 이를 기반으로 악성코드 감염 시스템을 탐지하는 시스템을 제안한다.

• 한국농공학회논문집
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• 제50권5호
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• pp.3-15
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• 2008

This study aims to simulate the 3 dimensional (3D) model of Keum-man connection canal using geographic information system (GIS) as well as considering design in viewpoint of engineering. The canal connects from Keumkang to Mangyungkang in order to supply fresh water into Saemankeum lake. This study used 3 dimensional spatial planning model (3DSPLAM) process to generate the 3D model, which has not only several planning layers in actual process, but also their corresponding layers in modeling process to simulate 3D space of rural villages. The discharge of the canal is $20m^3/s$ on slope of 1/28,400 in the canal length of 14.2km, which consists of pipe line and open channel. This study surveyed the route of the canal and its surrounding environment for facilities to make images in the 3D graphic model. Besides, the present study developed data set in GIS for geogrphical surface modeling as well as parameters in hydraulic analysis for water surface profile on the canal using HEC-RAS model. From the data set constructed, this study performed analysis of water surface profile with HEC-RAS, generation of digital elevation model (DEM) and 3D objects, design of the canal section and route on DEM in AutoCAD, and 3D canal model and its surrounding 3D space in 3DMAX with virtual reality. The study result showed that the process making 3D canal model tried in this study is very useful to generate computer graphic model with the designed canal on the surface of DEM. The generated 3D canal can be used to assist decision support for the canal policy.

• 디지털융복합연구
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• 제16권1호
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• pp.439-452
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• 2018

본 연구는 경제활동에 참여하는 은퇴 전 한국 베이비부머의 소비유형을 실증적으로 탐색하고, 유형별 소비가 우울에 미치는 영향을 검증하는 데 목적을 두고 있다. 잠재프로파일분석을 이용하여 베이비부머의 소비를 분석한 결과, 기초생활중심형, 사회생활중심형, 주거생활중심형, 고급소비중심형의 4가지 유형이 구조화되었다. 이러한 소비유형과 우울은 유의미한 상관관계가 있는 것으로 증명되었는데, 특히 사회생활중심형 소비유형과 비교하여 기초생활중심형과 고급소비중심형의 우울수준이 유의하게 높았다. 또한 교육수준이 낮을수록, 배우자가 없는 경우, 주관적 건강상태가 나쁜 경우, 신체기능에 제한이 있을수록, 장애진단을 받을수록, 여가활동에 만족하지 않을수록, 소득이 낮은 경우, 주관적 경제상태가 부정적일 때 우울수준이 높은 것으로 조사되었다. 본 연구결과를 바탕으로 한국 베이비부머를 위한 특화된 노후준비 정책과 프로그램의 개발 필요성을 제언한다.

• 디지털융복합연구
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• 제14권7호
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• pp.37-43
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• 2016

본 연구는 신학전공 학생과 비신학 전공 학생간의 기독교인성에 미치는 요인들이 무엇인가를 알아보기 위한 것이다. 여러 가지 기독교인성에 미치는 영향들 중에서도 특별히 개인신상과 대학생활 만족도 중심으로 설문조사하였고, 개인특성변수(성별, 연령, 학년, 동아리 활동 유무, 부모와의 대화시간, 종교, 대인관계 등)와 대학생활만족도가 기독교인성과의 관계와 미치는 영향이 무엇인지, 신학전공 학생과 비신학 전공 학생 간에는 어떤 차이가 있는지, 차이가 있다면 어떤 점에서 차이가 얼마나 있는지를 설문지를 분석하여 연구하였다. 본 연구를 통하여 신학과 학생이 비신학과 학생들보다 높은 기독교인성의 덕목이 무엇인지와 기독교인성에 영향을 미치는 요인들을 제시하였다.