Journal of Korean Society of Disaster and Security
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v.16
no.1
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pp.23-35
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2023
Recently, the damage caused by natural disasters such as typhoons and localized torrential rains has been increasing rapidly. The Ministry of the Interior and Safety enacted a 「law on safety management of small sized infrastructures」 and local governments have to register small sized infrastructures with the National Disaster and Safety Management System (NDMS) until March 31st every year. Recently, each local government has ordered Safety inspections of small sized infrastructures and maintenance plans and six types of facilities, including small streams, small bridges, farm roads, access roads to village, inlet weirs, and drop structures are being surveyed and digitized into a database. Each facility is being evaluated for risk, and for those deemed hazardous, maintenance plans are being developed. However, since the risk assessment method of small sized infrastructures is not clear so that is conducted through visual investigation by field investigators, risk assessment is conducted in a subjective and ambiguous form. Therefore, this study presented a reasonable and quantitative risk assessment method by providing a quantitative evaluation indicator for small stream, which has the highest disaster risk among other small sized infrastructures, so that small sized hazard infrastructures can be selected to secure transparent evidence for improvement plans and action plans.
Dong-Woo Seo;Kyu-San Jung;Sangki Park;Jung-Hyun Kim
Journal of Korean Society of Disaster and Security
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v.16
no.2
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pp.75-83
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2023
In general, bridges are facilities installed for the purpose of easily passing through sections such as valleys and rivers. Railway bridges that run through downtown areas are damaged due to external factors such as earthquakes and collisions with passing vehicles, resulting in serious human casualties. This can cause serious human and properties damage, such as functional paralysis in downtown areas. Depending on the degree of damage, repair work such as partial repair or full replacement is in progress for the bridge where the collision occurred. When damage or deformation occurs due to collision, the repair method is determined according to the degree of deformation and the degree to which the load capacity of the bridge is affected by the deformation. In this study, a numerical analysis review was performed on the repair work for the local deformation caused by the collision of a vehicle on an old railway bridge installed and in operation in an urban area. To this end, a structural safety review of the bridge for local deformations caused by vehicle collisions was conducted. In this paper, a repair method for the accident bridge was presented based on the analysis results.
Sangki Park;Jaehwan Kim;Dong-Woo Seo;Ki-Tae Park;Hyun-Ock Jang
Journal of Korean Society of Disaster and Security
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v.16
no.3
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pp.17-26
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2023
Prestressed Concrete (PSC) girders are divided into pre- and post-tension types as prestressing method, and I- and U-type as cross-sectional shape. There are both advantages and disadvantages depending on each prestressing method and cross-sectional shape, and each method is applied to bridge construction sites. In this study, a new girder design was attempted to develop that overcomes its shortcomings by using the pretension method and U-type cross sectional shape. Its structural performance was verified in this study. Pretension type girders are mainly manufactured in factories because they require a reaction arm and related facilities, and have the disadvantage of being limited in weight and span length for road transportation. In addition, in the case of the U-type cross-section, structural stability is very reliable during construction against overturning, but its own weight is relatively large comparing to I-type, and the post-tension method is mainly applied after on-site production. In this study, a PSC girder manufacturing method using the field pretension was proposed and a span length of 40 m real-scale test specimen was manufactured and verified its structural performance.
Journal of Korean Society of Disaster and Security
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v.16
no.4
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pp.75-84
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2023
Many developing countries face challenges in estimating long-term discharge due to the lack of hydrological data for water supply planning, making it difficult to establish a rational water supply plan for decision-making on water distribution. The study area, the Bandung region in Indonesia, is experiencing rapid urbanization and population concentration, leading to a severe shortage of freshwater. The absence of water reservoir prediction methods has resulted in a water supply rate of approximately 20%. In this study, we aimed to propose an approach for predicting water reservoirs in developing countries by analyzing water safety and potential water supply using the MODSIM (Modified SIMYLD) network model. To assess the suitability of the MODSIM model, we applied the unit hydrograph method to calculate long-term discharge based on 19 years of discharge data (2002-2020) from the Pataruman observation station. The analysis confirmed alignment with the existing monthly optimal operation curve. The analysis of power plant capacity revealed a difference of approximately 0.30% to 0.50%, and the water intake safety at the Pataruman point showed 1.64% for Q95% flow and 0.47% for Q355 flow higher. Operational efficiency, compared to the existing reservoir optimal operation curve, was measured at around 1%, confirming the potential of using the MODSIM network model for water supply evaluation and the need for water supply facilities.
Since 11 September 2001, warnings of risk in the nexus of terrorism and nuclear weapons and materials which poses one of the gravest threats to the international community have continued. The purpose of this study is to analyze the aim, principles, characteristics, activities, impediments to progress and developmental recommendation of the Global Initiative to Combat Nuclear Terrorism(GICNT). In addition, it suggests implications of the GICNT for the ROK policy. International community will need a comprehensive strategy with four key elements to accomplish the GICNT: (1) securing and reducing nuclear stockpiles around the world, (2) countering terrorist nuclear plots, (3) preventing and deterring state transfers of nuclear weapons or materials to terrorists, (4) interdicting nuclear smuggling. Moreover, other steps should be taken to build the needed sense of urgency, including: (1) analysis and assessment through joint threat briefing for real nuclear threat possibility, (2) nuclear terrorism exercises, (3) fast-paced nuclear security reviews, (4) realistic testing of nuclear security performance to defeat insider or outsider threats, (5) preparing shared database of threats and incidents. As for the ROK, main concerns are transfer of North Korea's nuclear weapons, materials and technology to international terror groups and attacks on nuclear facilities and uses of nuclear devices. As the 5th nuclear country, the ROK has strengthened systems of physical protection and nuclear counterterrorism based on the international conventions. In order to comprehensive and effective prevention of nuclear terrorism, the ROK has to strengthen nuclear detection instruments and mobile radiation monitoring system in airports, ports, road networks, and national critical infrastructures. Furthermore, it has to draw up effective crisis management manual and prepare nuclear counterterrorism exercises and operational postures. The fundamental key to the prevention, detection and response to nuclear terrorism which leads to catastrophic impacts is to establish not only domestic law, institution and systems, but also strengthen international cooperation.
The immigration procedure at airports is vital to making passenger and cargo transport faster. The rapid procedure of immigration could be an important determining factor when passengers select an air transport company, one that should have high satisfactory in terms of their service level and efficiency. Therefore, the advanced airport makes it easy for customers and their cargo to proceed. The coordination between authorities related to the Korean international airport is not satisfactory for customers. This paper analyzes the factors necessary to enhance the airport immigration procedure with the movement of aircrafts, passengers, cargo, and post, using the CK(Cook and Kress) model of DEA(Data Envelopment Analysis). From this study, the author found that research and development will be needed to improve the immigration procedure, especially on facilities and their operating systems. There are needed, also, performance indicators and a continuous monitoring system.
When parents as primary care takers to the mentally disabled adult are no longer taking care of their care-needed offsprings because of their own death or illness, instead themselves. who take care of their offsprings with the mental disability? Therefore, 'permanency planning' is very important for reduction of parents' care burden and social integration of mentally disabled adults. Accordingly, this study aims to find out factors which are related to permanency planning for adults with the mentally disability For the purpose of the study, 192 parents of the adult with the mental illness and mental retardation were conducted a survey regarding type of permanency planning, and its related factors including social functioning level of the mentally disabled, care burden, parents' self-perception of being aged, help from offspring without mental disability, social support, and financial ability. Furthermore, this study examined correlation between these factors and residential planning. Results obtained by the study were as follows: 1) 51% of the parents are having a plan for institution and most parents want other family member to take care for financial planning for their mentally disabled offsprings. 2) As a result of multiple regression for finding out factors which affect parents' permanency planning, social functioning level of the mentally disabled, parents' self-perception of being aged, help from offspring without mental disability, social support, and financial ability were statistically significant influenced factors, which has 23.3% of explanatory power. 3) As a result of step-wise multiple regression, financial ability, parents' self-perception of being aged, and help from offspring without mental disability were the most powerful influenced factors for permanency planning. 4) In case of having a plan for residential types-which are institution and community living-, parents who have a plan for the mentally disabled offsprings' future residence as community living than institution have the offsprings with more social functioning and also have more help from offspring without mental disability. Therefore, this study concluded that welfare policy for mental health and the handicapped which secure various types of community living facilities and income security is strongly needed. At the same time, mental health profession is needed to have more active interest and intervention for permanency planning for their adult clients and parents.
This study suggests a board fence design with a convergence-style mural. The basic structure contains pictorial factors with mural paintings on the fence. It is also equipped with electricity facilities inside the fence itself, so it has not only the unique function of the fence but also the complexity and expandability in order to be used as a garden lighting and security alarm system. All the components meet the standard so they can be manufactured in a factory. Through this design proposal, this study tries to suggest a fence which encourages personal or social communication one another as well as the basic function of the fence. As a result, the fence realizes a broad convergence function of its usefulness for social functioning such as the crime prevention as well as an esthetic function.
Journal of the Korean Society of Environmental Restoration Technology
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v.9
no.1
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pp.14-30
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2006
It is difficult to secure public lots in the downtown area, school lots can be made the best use of important source to increase the area of green land in the city. The tree-planting campaign for schools has been in force since 1999 by the city of Seoul and at present; it is currently established as the plan of school parks. Thereupon, the purpose of this study is to present some ways to revitalize elementary schools to be used as vest pocket parks through the research of elementary schools, which are subject to the plan of school parks in Seoul. The results of this study are as below : The subjects to revitalize school parks as vest pocket parks are as follows. First, the land has to be utilized for security of space. Second, in addition to the front and back gate, another passage to the park has to be set up for easy access. Third, the fence has to be formed as a hedge used outside the park. Fourth, selecting plants, species of trees suitable for the landscape of school and taking into consideration the aspect of ecology. Finally, it is urgent to enact socially and economically proper standard of law by the new standards of area for school landscape considering not only the building law and regulations of general landscape, but also specific characteristics of school landscape.
Conde-Ferraez, Laura;Allen, Rosa Etelvina Suarez;Martinez, Jorge Ramiro Carrillo;Ayora-Talavera, Guadalupe;Gonzalez-Losa, Maria del Refugio
Asian Pacific Journal of Cancer Prevention
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v.13
no.9
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pp.4719-4724
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2012
This study aimed to analyse the participation of women of reproductive age in a cancer screening program, and survey reasons for non-screening in a region from Mexico with high cervical cancer mortality. A total of 281 obstetric patients from a previous HPV study in a social security hospital during 2008-2009 were included. Reasons for not participating in the screening were directly asked. HPV positive patients were invited to participate in an informative workshop, and they filled in a knowledge questionnaire. The women ranged in age from 14-47 years; 123 (43.8%) had never participated in screening, of which 97 (78.9%) had their first sexual intercourse 2 to 10 years ago, resulting in 25% HPV positive. Screening history was strongly associated with 2 or more gestations (OR=10.07, p=0.00) and older age (OR=6.69 p=0.00). When 197 women were contacted and interviewed, reasons referred for non-screening were ignorance, lack of interest or time, recent sexual onset, shame and fear. More than 50% of the workshop participants showed knowledge of HPV, while 38.9% and 25% knew about Pap smear and cervical cancer. A high percentage of women of reproductive age have never had a Pap smear. Promoting the screening program in medical facilities seems to be important in this population. New approaches to inform vulnerable individuals on the benefits of screening need to be implemented, especially for young women.
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