• Journal of the Korean Professional Engineers Association
• /
• v.41 no.2
• /
• pp.45-50
• /
• 2008

At this point, the Pan-Korea Grand Waterway (PKGW) has negative views and various complicated problems, but the government chose PKGW as important project for having a benefit in physical distribution, tourism, aggregate sale and new employment as well as in view of disaster prevention, flood control, irrigation. The government makes special laws for PKGW in evaluating environment effect and the safety of existing facilities and considers countermeasures for the rehabilitation, movement and redevelopment of facilities by related company and specialist. From analyzing and investigating the collective results in detail and in stages, the PKGW is the best choice by which korea engineers can hand over pleasant and beautiful korea to next generation in world.

• International conference on construction engineering and project management
• /
• 2022.06a
• /
• pp.1043-1050
• /
• 2022

Markov chains and Monte Carlo Simulation were applied to account for the probabilistic nature of pavement deterioration over time using data collected in the field. The primary purpose of this study was to evaluate pavement network performance of Western Australia (WA) by applying the existing pavement management tools relevant to WA road construction networks. Two approaches were used to analyze the pavement networks: evaluating current pavement performance data to assess WA State Road networks and predicting the future states using past and current pavement data. The Markov chains process and Monte Carlo Simulation methods were used to predicting future conditions. The results indicated that Markov chains and Monte Carlo Simulation prediction models perform well compared to pavement performance data from the last four decades. The results also revealed the impact of design, traffic demand, and climate and construction standards on urban pavement performance. This study recommends an appropriate and effective pavement engineering management system for proper pavement design and analysis, preliminary planning, future pavement maintenance and rehabilitation, service life, and sustainable pavement construction functionality.

• International conference on construction engineering and project management
• /
• 2011.02a
• /
• pp.597-602
• /
• 2011

A robust asset management methodology is essential for effective decision-making of maintenance, repair and rehabilitation of a bridge network. It can be achieved by a computer-based bridge management system (BMS). Successful BMS development requires a reliable bridge deterioration model, which is the most crucial component in a BMS, and an optimal management philosophy. The maintenance optimization methodology proposed in this paper is developed for a small bridge network with limited structural condition rating records. . The methodology is organized in three major components: (1) bridge health index (BHI); (2) maintenance and budget optimization; and (3) reliable Artificial Intelligence (AI) based bridge deterioration model. The outcomes of the paper will help to identify BMS implementation problems and to provide appropriate solutions for managing small bridge networks.

• Economic and Environmental Geology
• /
• v.54 no.6
• /
• pp.733-741
• /
• 2021

Globally, in accordance with the goals set forth in the 2015 Paris Climate Agreement, each country has established and declared a reduction target for carbon neutrality by 2050. The roadmaps for establishing long-term greenhouse gas emissions development strategies and setting reduction targets have been announced. As the international community accelerates the transition to the net-zero society, 128 countries have declared net-zero by the end of 2020, and the net-zero declaration continues to expand around G20 member states. In December 2020, Korea announced the "2050 Net-zero Strategy" to establish a foundation for simultaneously achieving carbon reduction, economic growth, and improved quality of life for the people through active response to the net-zero, and pursuing policy tasks in stages to do this. Comprehensive carbon management is insufficient due to the lack of comprehensive carbon management due to the departure from the areas of mandatory reduction, such as the GHG energy target management system and the GHG emissions trading offset system implemented to reduce greenhouse gases in Korea. Currently, there is no cases for estimation or calculation of carbon dioxide emissions for the Mine Reclamation projects. It is reviewed the standard methods proposed by domestic and foreign carbon emission calculation methods and proposed appropriate carbon emission estimation methods for the Mine Reclamation projects in this study.

• Journal of the Korean housing association
• /
• v.13 no.5
• /
• pp.77-88
• /
• 2002

This article deals the investigations how to solve the social deficiencies of deteriorate apartments, which is a half cycle of a building and it goes slum clearance and redevelopment. And this proposes an active remodeling and design strategy, management, and housing policies for extending the usage of the resource. Most of apartment housing in Korea is built by the panel wall and slab structure system fur economic price. To remake is possible, even though not designed in flexibility and variation. The remodeling strategies are dwelling unification, transformation of two units to one or three units, addition of a room, changing into commercial and community required spaces, and reshaping of a envelop and facade by addition of a dwelling or dwellings, roof floors, change of materials and colors, and so on. And, all activities in structural aspect are proposed removal in upper part and addition in lower part of an apartment housing. Active remodeling cost a great deal compare to new construction, so any remodeling activities should be based on a minimal interfere and budgets to enhancing the quality in existing building. The final aim of an active remodeling is to enhance the quality in economic values, and to keep original state and to put on the new one in a small part. To promote the active and careful management and rehabilitation, it is necessary to give the positive incentive in terms of architectural law, bank loan, and any redevelopment project should get the remodeling record in national resources.

• The Journal of Churna Manual Medicine for Spine and Nerves
• /
• v.7 no.1
• /
• pp.15-20
• /
• 2012

Objectives : The aims of this study were to introduce the theory of traditional Chinese orthopedic theory(整脊理論) and to analyze the guideline of diagnosis and treatment of common spinal disorders by treating Chinese spinal manipulation technique(常見病中醫整脊指南). Methods : We have searched the web sites of traditional Chinese orthopedics association (整脊學會), a branch of the China academy of traditional Chinese medicine (TCM), and related articles. Additionally, we analyzed the guideline of diagnosis and treatment of common spinal disorders by treating Chinese spinal manipulation technique which was introduced by that association at 7th academic conference in China in 2011. Results : The guideline was prepared by 2 year project leaded by professor Yi-zhong Wei who was a person in charge of the spinal manipulation guideline of national standardization committee of TCM in China. It was a summary of the whole theory of China spinal manipulation therapy in TCM and contained 22 common spinal disorders by the treatment of traditional Chinese Tuina methods. Spinal manipulation theory was summarized by one doctrine, two theories, and two important view points. The treatment method was abstracted as 8 major Tuina techniques. Conclusions : The guideline will be a way of advance of Chinese spinal manipulation technique. This will be a good reference to Korea Chuna manipulation for improving their techniques.

• Proceedings of the Korean Geotechical Society Conference
• /
• 2008.10a
• /
• pp.569-580
• /
• 2008

If slope height was more than 20 meters, we conducted an analysis of stereographic projection and limit equilibrium at this slope. We proposed reduction of slope face angle and reinforcement of rock bolt depending on analysis. Blasting design : Standard pattern based on result of local test blasting was made for blasting design. Vibration criterion was set for less than 3.0mm/s because of outworn buildings and inhabitants opinions. Production blasting and Controlled blasting has been done as Construction standard pattern. After Vibration Monitoring has been done, so that we can control of complement. "Bidding Document" and AASHTO 2001 "A Policy on Geometric Design of Highways and Streets" were so for design criteria of earthwork but they were different actual design criteria and left something to be desired in Afghanistan. Therefore, although "Bidding Document" and "AASHTO 2001" were basic design criteria, domestic design criteria was reflected in this design criteria for complement by discussion with supervisor. Drainage design : For stability ratio, ditch of arch block and stonework was designed by rainfall data for the 13 years and discussion with supervisor. Pavement was designed as flexible pavement. Because these days in Afghanistan postwar repair works, especially urgent repairing of roads and newly making of roads, are very highly in progress, I think that Afghanistan is the region about which our construction technical experts should have great concerns.

• Water for future
• /
• v.29 no.3
• /
• pp.197-205
• /
• 1996

Flow carrying capacity of water distribution systems is getting reduced by deterioration of pipes in the systems. The objective of this study is to develop a managerial decision-making model for the rehabilitation of water distribution systems with a minimum cost. The decisions made by the model also satisfy the requirements for the discharge and pressure at demanding nodes in the system. The replacement cost, pipe break repair cost, and pumping cost are considered in the economic evaluation of the decision along with the break ratio and interest ratio to determine the optimal replacement time for each pipe. Then, the hydraulic integrity of the water distribution system is checked for the decision by a pipe network simulator, KYPIPE, if the discharge and pressure requirements, the decision made for the optimal replacement time is revised until the requirements are satisfied. The model is applied to an existing water distribution system, the Metropolita Water Supply Project (1st Phase). The result shows that the decisions for the replacement time determined by the economix analysis are accepted as optimal and the hydraulic integrity of the system is in good condition.

• Journal of rehabilitation welfare engineering & assistive technology
• /
• v.8 no.2
• /
• pp.101-107
• /
• 2014

In order to understand people's ideas about radio pagers and effects of the radio pagers on school violence prevention, the study analyzed a radio pager demonstration which was being participated by a total of 606 students. According to the findings from the analysis, first, when it comes to statistical differences between the two groups with the experience of school violence as either a victim or a assailant, both the victims and the assailants believed that the radio pagers is useful to prevent school violence. Both the groups were observed to be willing to use the radio pagers constantly. Second, regarding effects of the radio pagers on the school violence prevention, they were understood to have even a more positive influence both on the school violence prevention and the students' satisfaction with their school lives as a more number of the students possess the radio pagers, as the more the students need the radio pagers and lastly as the more the students feel content with the radio pagers. Based on the results of the analysis, implications and limits of the study were proposed.

• International conference on construction engineering and project management
• /
• 2009.05a
• /
• pp.700-706
• /
• 2009

Bridges are vital components of any road network which demand crucial and timely decision-making for Maintenance, Repair and Rehabilitation (MR&R) activities. Bridge Management Systems (BMSs) as a decision support system (DSS), have been developed since the early 1990's to assist in the management of a large bridge network. Historical condition ratings obtained from biennial bridge inspections are major resources for predicting future bridge deteriorations via BMSs. Available historical condition ratings in most bridge agencies, however, are very limited, and thus posing a major barrier for obtaining reliable future structural performances. To alleviate this problem, the verified Backward Prediction Model (BPM) technique has been developed to help generate missing historical condition ratings. This is achieved through establishing the correlation between known condition ratings and such non-bridge factors as climate and environmental conditions, traffic volumes and population growth. Such correlations can then be used to obtain the bridge condition ratings of the missing years. With the help of these generated datasets, the currently available bridge deterioration model can be utilized to more reliably forecast future bridge conditions. In this paper, the prediction accuracy based on 4 and 9 BPM-generated historical condition ratings as input data are compared, using deterministic and stochastic bridge deterioration models. The comparison outcomes indicate that the prediction error decreases as more historical condition ratings obtained. This implies that the BPM can be utilised to generate unavailable historical data, which is crucial for bridge deterioration models to achieve more accurate prediction results. Nevertheless, there are considerable limitations in the existing bridge deterioration models. Thus, further research is essential to improve the prediction accuracy of bridge deterioration models.