The performance evaluation of existing structures is important to study the safety of those structures with changing the loads over the lifetime of structures. Therefore, this study aims at evaluating the Seong-Su bridge, Seoul, Korea, using structural health monitoring (SHM) system. The static and dynamic tests are used to assess the behavior of the bridge. The statistical and wavelet analyses are used to demonstrate the behavior of the bridge in the time and frequency domains. The previous SHM results are used to assess the bridge performance. The results of this study show that the bridge performance under static and dynamic loads is safe in time and frequency domains.

Recently, interest in solar energy, which is the center of new government energy policy, is increasing. However, the focus is on mass production of solar power plants, and policies and related technologies for maintenance and management of existing installed PV modules are insufficient. In this study, we use UAV (Unmanned Aerial Vehicle) to acquire RGB and infrared images, apply it to the structure-from-motion (SfM) based image analysis tool, model the three- And the position of the hot spot was monitored and coordinates were detected. As a result, it is possible to provide basic spatial information for maintenance of solar module by monitoring and position detection of hot-spot suspected solar cells by superimposing infrared image and RGB image based on unmanned aerial vehicle.

The goal of this study is to examine municipality comprehensive plans by recognizing the problem that adverse impacts of urban regeneration impede the sustainability of specific renewal project. 10 major cities in Korea that are experiencing urban decline were chosen for the study area and plan evaluation indexes were adopted based on the sustainable urban regeneration principles in terms of environmental, social, and economic aspects. Plan evaluation was conducted by employing the content analysis method and developed assessment indexes for three sectors (factual basis, goal/objective, and policy/action) of plan. The findings show that policies, such as 'expansion of parks in urban area,' 'pedestrian-oriented street improvement project,' and 'countermeasures for local industry revitalization,' should be fundamentally included in adopting sustainable urban regeneration plans. Plan scores regarding sustainable urban regeneration had an insignificant relationship with the status of administrative district and plan adopted year. This is because metropolitan municipalities, including Ulsan, Daejeon, and Daegu, received relatively low plan score compared to local governments like Goyang and Suwon. Also, Daegu and Suwon, which established their comprehensive plan in 2018 obtained lower score than Seoul and Incheon, where its plans were created before 2015. Evaluation protocol and indexes that were suggested in this study can be used while reorganizing each locality's comprehensive plan, and thus, play as one of major bases in preparing future sustainable urban regeneration projects.

Infiltration affects indoor environmental and air quality and energy consumptions in buildings. Especially, airflow and the infiltration are more remarkable in high-rise buildings due to the air-driving forces (stack and wind effects). Thus, it is important to understand infiltration distributions in high-rise residential buildings. In this study, the weather-driven infiltration is characterized from the viewpoint of interactions between external wind and stack effect in high-rise residential buildings. To calculate accurately the annual infiltration distributions, this study also suggests an airflow and thermal simulation method with a two-step calibration of air-leakage data. The simulated results show (1) how the interaction between stack and wind effects induce infiltration types (outdoor and interzone air infiltration) and (2) how much the interzone air infiltration (being ignored in previous studies) occurs due to the stack effect, as well as the outdoor air infiltration rates.

The purpose of this study is to investigate the cause of repeated accidents through the investigation and analysis of the collapse cases of domestic earthquakes in order to prevent the earthquake disaster in the urban redevelopment and reconstruction. It is designed and constructed to draw out various problem factors and to find solutions to these problems. And the contents related to various laws and systems of the construction project management stage. Especially. In the management of the construction management centered on the safety management and quality control of the technical aspect design, supervision, construction phase through the cause of the accident and improvement measures based on the investigation report of the collapse of the construction site near Sangdo Kindergarten in Seoul. Supervisor. And constructors should be settled on the responsibility and responsibility of God. In order to achieve the purpose of the project, a system is established to link worker-centered occupational safety and health management with technology-based safety construction management, and analysis of how the quality control of the earthquake prevention affects safety construction management The purpose of this study is to prepare the optimum management plan of construction business.As a result of this study, it is aimed to accomplish the purpose of small scale redevelopment and reconstruction construction project by providing optimization method in the stage of construction project management in order to prevent collapse caused by differences in design,Is expected.

The land treatment of sewage sludge is necessary because sewage sludge is increasing year by year. Therefore the research of sewage sludge solidification is underway as one of the land treatment methods. However, the problem with existing sewage sludge solidification is that the moisture content of sewage sludge is high and the dewaterability is low. Because of high drying cost the efficiency of energy production is low and the calorific value is insufficient. So the disposer is supplied with a filtration and caloric aid for improving dewaterability and calorific value. In this study, it is aimed to improve the fuel value of sewage sludge by confirming the feasibility of waste wood as a filtration and caloric aid. The dewaterability was measured by CST-test and the calorific value was measured by bomb calorimeter. As a result the dewaterability and calorific value are improved in all of the samples. The dewaterability was improved as the waste wood was added in the sewage sludge. By adjusting the waste wood adding rate into the sewage sludge the dewaterability and calorific value of sewage sludge will be improved. This study confirmed possibility of the waste wood used as filtration and caloric aid.

본 연구의 목적은 노인들의 응급의료이용에 영향을 주는 요인들을 알아보고 의료접근의 형평성을 조사하는 데 있다. 2014년 한국의료패널조사 자료를 사용하여 기술분석과 로지스틱회귀분석이 행하여졌으며 인터뷰에 참여했던 1,313명의 노인들이 표본으로 선정되었다. 연령, 성별, 교육수준 등의 인구변수들이 응급의료이용의 중요한 결정요인이었다. 의료요구는 노인 계층 간 응급의료이용의 차이를 충분히 설명하지 못한 걸로 나타났으나 건강상태는 응급의료서비스를 사용하는 노인들의 중요한 결정요인이었다. 의료비지출은 응급의료서비스이용의 계층 간 차이를 개선하지 못했으나 응급의료이용의 중요한 예측요인으로 남았다. 한국에서 의료개혁은 의료요구를 가진 노인들이 효과적인 진료혜택을 받을 수 있도록 전국민 응급의료 보장을 확대하는 방향으로 계속 이루어져야 한다. 앞으로 연구도 75세 이상의 교령노인과 여성 및 교육수준이 낮은 노인, 그리고 높은 의료비 지출을 하는 노인과 같은 인구계층들에게 혹시 있으지 모르는 의료접근의 장애들을 허무는 방향으로 이루어질 필요가 있다.

The purpose of this study was to analyze the history and significance of the building and its site of First Baptist Church in Urbana, Illinois. Before the full-scale restoration work is initiated, historical confirmation of the building is necessary. Therefore, this paper examined the historical significance of the church through the in-depth literature review and examined the interior and exterior conditions thoroughly. Ultimately, this paper can contribute to make up the restoration work list and to determine the priority of them.