Hydrogeological systems in a metrnpolitan area can be understood by analyzing the groundwater disturbing factors such as constructions and land applications, the groundwater usage for domestic and industrial purposes, and the groundwater pumpage to lower the groundwater level for the structural safety of subway and underground facilities. This study is part of the study performed to understand the groundwater system in the Seoul area and it is focusing on the hydraulic properties. Groundwater well inventory, barometric efficiency measurements, pumping and slug tests, and long-term groundwater monitoring have been perfonrmed during the last 2 years. The relations between Han River and the groundwater around the river also have been observed. These observations and test data, together with the information on soil distribution, geology, and logging data are used to construct a database and GIS(Geographic Information System) presentation system using ARC/INFO. Barometric efficiencies appeared to have no special trends associated with well depths, which maeans that the degree of confinement of the crystaline rock aquifer of the Seoul area is distributed locally depending on the developrnent of fractures. Hydraulic conductivities exponentialiy decrease with well depth. The stage of Han River fluctuates according to the tidal movement of nearby seawater but the tidal effects attenuate due to the underwater dams. Groundwater levels in the Seoul area seem to have declined for the last two years,but it is not certain that the declination represents the long-term trend.
Journal of Korean Society of Disaster and Security
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v.5
no.2
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pp.49-59
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2012
The safety management of the emergency exit, by directly related to the $civil^{\circ}$Øs dead in the fire situation, have limited by which the fire station take the on-side and control-centered way of business processing, it is expect to the effects in which the citizen have to concern and to take part. From 2010 years in the back-ground, it is operated nationally the report and reward system on an illegal behavior of the emergency exit, it is happened to the unfit operating situation in the mission and direction of the system up which the exit paparazzi act with intent to receive the reward payments. The study suggests solution through analyzing the illegal emergency exit operation result of sixteen counties and the Seoul metropolitan from year 2010 to 2011. Firstly, the report destination is adjusted to the multiple use establishments and the large-scale multiple use facilities over the limit level is limited under five times the report events of the same people in the minor endorsement. And the fine incomes should be invested to the disaster prevention acting related with the exit. Secondly, for upgrade of the report accuracy, a reporter is received the possible information for the confirmation of an illegal act, has become to lead the pre-monitoring act which the reporter is can to take the safety education and to guide the information about season and vulnerable business location. Finally, considering the support way about the encounter facility, the fire officer is not happen to occur the repetitive report in the same place, is related to the volunteer service system the report acts, consider as the volunteer service time, and must support them to act as the disaster prevention volunteer.
This study estimated the long-run and the short-run price and income elasticity of crude oil demand by using the ARDL model in Korea. First, the long-run cointegration relationship existed between crude oil demand and price or income in the ARDL-bounds tests. Second, the long-run own price, the cross price elasticity and the income elasticity were both statistically significant elastic and sensitive in the ARDL. Third, there was autocorrelation of the residuals, but no misspecification errors and heteroscedasticity, and then the residuals showed a normal distribution. And the CUSUM & CUSUMSQ tests showed that the coefficients were stable. Fourth, the short-run own price, the cross price elasticity and the income elasticity were both statistically significant elastic and sensitive in the ARDL-RECM. The ECM with the short-run dynamics showed rapid adjustments in the long-run equilibrium of oil demand after the economic crisis. In the short-run, the sensitivity of crude oil demand to price and income changes has moved in the same direction as the long-run case. Korea, depending too much on foreign crude oil, is vulnerable to the shocks of oil prices, so rising oil prices can certainly have a negative impact on Korea's trade balance. And the elasticity of long-run oil prices may help to control and manage Korea's oil demand. The government needs to strengthen monitoring of the country's policies and market trends related to crude oil, establish strategies to customize national policies and market conditions, and strengthen active market dominance efforts through pioneering new market and diversification.
The secondary health status of the disabled is more vulnerable due to the aging of the disabled, the nature of primary disabilities, and social and environmental disability suppression and stress. Therefore, this study aimed to examine the experiences of secondary disabilities of the disabled and how they responded when secondary disorders occurred. A total of 13 people with severe disabilities with secondary disabilities were interviewed in a focus group and analyzed by applying phenomenological research methods. As a result of the analysis, people with disabilities were experiencing secondary disorders due to variations in the experiences of aging and primary disorders, management problems and life accidents in the primary disorder, misunderstanding of the labor market for disorders and health, misunderstanding of risks of secondary disorders and lack of prevention. In response, people with disabilities live alternatively between body and work, body and academic, try to prevent worsening of secondary disabilities at the individual level, continue to enter the hospital, or choose a life that puts health first. While experiencing secondary disabilities, people with disabilities experienced the threat of life, recognized life as having to endure and fought to the end, acknowledged the difference between the disabled and non-disabled people, and standed aloof from their ongoing secondary disability. It also requested institutional support. Based on the results of this study, medical-level measures, institutional support measures in the labor market, and social welfare practices were discussed.
Smart work is deeply embedded in our contemporary lives. This is called Smart Life. The expansion of communication, caused by smart life is utilized for the political purposes of politicians, political candidates, and political policies. Chiefly, smart life includes improvement in awareness, personal relations, and policy advocacy. Socially, smart life leads the proliferation of issues and civil movement. In particular, smart life has a significant effect on culture. In the case of K-POP, it is disseminated going beyond space time. It enhances economic value added by joining and sharing at the same time. Smart life has numerous advantages such as improving the quality of life, but it might cause inconvenience depending on users because there are differences in acceptance according to generations. Due to the heavy weight on the device, there are some side-effects such as lacking in human thinking, disclosure in private life, lacking in basic securities, increase in information addicts who are anxious when they do not get on the Internet or SNS, and interference with work. However, this inconvenience can change into convenience when users are accustomed to it. Like this, smart life influences politics, economy, society, and culture a lot. Working environment of smart life is a new paradigm, which can generate high performance through working in an exciting and bright atmosphere with easy economy and putting value on results.
Throughout various data sources, it is widely observed that air quality in South Korea has become improved. Koreans, however, insist that their health status and economic burden due to worsened air quality get degenerated. This study aims to explain the mismatch between perception and measured data, air pollution-led medical expenses, and consumption behaviors in the economics perspectives. First, we demonstrated data-driven evidence of mismatch in the perceived severity of air pollution and its enhancement in measured data. Second, using the health demand model, we theoretically derived and empirically showed a co-rising relation between air pollution severity and medical expenses. Last, we analyzed that the perception led to increased defensive expenditures in consumption. This result implies the possibility of overestimation in air pollution impacts on socioeconomic losses and its possible reverse interpretation from increased social benefit after improved air quality. Our results recommend policy consideration to strengthen air quality standards, to support socially vulnerable groups regarding defensive expenditures, and to improve the accessibility and credibility of air pollution information.
The IoT technology is a field that applies and converges the technologies in the existing industrial environment, instead of new technologies. The IoT technology is releasing various application services converged with other industries such as smart home, healthcare, construction, and automobile, and it is also possible to secure the work efficiency and convenience of users of IoT-based technologies. However, the security threats occurring in the IoT-based technology environment are succeeding to the vulnerability of the existing wireless network environment. And the occurrence of new and variant attacks in the combination with the ICT convergence environment, is causing damages. Thus, in the IoT technology-based environment, it would be necessary to have researches on the safe transmission of messages in the communication environment between user and device, and device and device. This thesis aims to design a safe communication protocol in the IoT-based technology environment. Regarding the suggested communication protocol, this thesis performed the safety analysis on the attack techniques occurring in the IoT technology-based environment. And through the performance evaluation of the existing PKI-based certificate issuance system and the suggested communication protocol, this thesis verified the high efficiency(about 23%) of communication procedure. Also, this thesis verified the reduced figure(about 65%) of the issued quantity of certificate compared to the existing issuance system and the certificate management technique.
Journal of the Korean Data and Information Science Society
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v.24
no.4
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pp.679-688
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2013
This study figured out the influential factors of region-based characteristic factors in our country upon asthmatic occurrence. Research subjects were 2,266,451 people who were confirmed the diagnosis of asthma (J45~J46) among patients in national health insurance for the year in 2010. The influence in each of factors upon the asthmatic occurrence was analyzed through hierarchical regression after comparing difference in asthmatic occurrence by basic local government. As a result of hierarchical regression, the whole asthmatic occurrence had significant difference in infants ratio, $SO_2$,Temperature, basin and dam area. The asthmatic occurrence had significant difference in subjective awareness of health level, $SO_2$, basin and dam area. A case of asthmatic occurrence had significant difference in infants ratio, temperature, $NO_2$ and coastal area. Diverse characteristic factors by region were indicated to have influence upon the asthmatic occurrence by causing or weakening asthma through mutually complex action. Accordingly, a region-based customized environmental health measure will need to be arranged that infants and elderly people, who are vulnerable classes, can be protected and prevented from harmful environment of asthma.
Journal of the Korean Society of Marine Environment & Safety
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v.21
no.5
/
pp.599-607
/
2015
The purpose of this study is to reproduce long-term wave fields in coastal waters of Korea based on wave hind-casting modelling and discuss its applications. To validate wind data(NCEP, ECMWF, JMA-MSM), comparison of wind data was done with wave buoy data. JMA-MSM predicted wind data with high accuracy. But due to relatively longer period of ECMWF wind data as compared to that of JMA-MSM, wind data set of ECMWF(2001~2014) was used to perform wave hind-casting modelling. Results from numerical modelling were verified with the observed data of wave buoys installed by Korea Meteorological Administration(KMA) and Korea Hydrographic and Oceanographic Agency(KHOA) on offshore waters. The results agree well with observations at buoy stations, especially during the event periods such as a typhoon. Consequently, the wave data reproduced by wave hind-casting modelling was used to obtain missing data in wave observation buoys. The obtained missing data indicated underestimation of maximum wave height during the event period at some points of buoys. Reasons for such underestimation may be due to larger time interval and resolution of the input wind data, water depth and grid size etc. The methodology used in present study can be used to analyze coastal erosion data in conjunction with a wave characteristic of the event period in coastal areas. Additionally, the method can be used in the coastal disaster vulnerability assessment to generate wave points of interest.
In Korea, religious bodies are being given tax benefits like tax exemption and reduction in accordance with the Local Tax Law. By the way, there's no difference between tax benefits given to religious bodies and other kinds of non-profit corporations. In other words, tax exemption and reduction for religious bodies are being made without considering the very nature of the bodies. This is causing lots of problems. Currently, tax supports to religious bodies are mostly focusing on tax items related to their property, considerably diverting from the ultimate purpose and objectives of tax exemption and reduction for religious organizations. This is not also weakening local finance, but also diverting from the basic intent of so-called the induction system that if necessary, tax supports are given, but they have to be minimized. To solve these problems, comprehensive actions need to be taken, for example, reducing tax benefits given to religious bodies' property and motivating the bodies to make a variety of donations like in developed countries. Now, religious bodies should change their consciousness of tax liability that is imposed by the Local Tax Law. And the government should be more systematic in the collection and management of data that are necessary to levy taxes on religious bodies. If required, the government show the data to religious bodies, convincing them to positively fulfil their tax liability without complaint. This study discusses the current state and problems of existing local tax systems in relation to religious bodies and then propose how to improve the systems. If the systems of tax exemption and reduction for religious bodies under the Local Tax Law can be improved, it would contribute to improve the finance of local autonomous bodies.
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