• International journal of advanced smart convergence
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• 제12권4호
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• pp.63-74
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• 2023

This study compared news coverage of national and international disasters, Hurricane Katrina and the Haiti Earthquake, using textual analysis of The New York Times and The Washington Post. The results reveal that media framing of the historical cases developed in three stages upon the development of post-disaster relief: (1) Call for humanitarian assistance; (2) New Orleans under anarchy and hopelessness vs. Haiti under scrutiny with hope; and (3) Katrina effects. By framing the outcomes of the hurricane as the "Katrina effect," the media used the disaster as a reference point to explain other economic and political issues. In addition, analysis of relevant statements and press releases confirmed that different social actors involved in the relief process, such as donors, facilitators, and beneficiaries, contributed to the media framing of the issue, although the facilitators were most successful in transferring their own frames to media frames. This study makes important contributions to the field as it looks beyond traditional relationships between quantitative measures of media attention and aid allocation. For governmental and nongovernmental organizations in the area of humanitarian assistance, the findings of this study will assist them in media-relations in the future.

• 한국재난정보학회 논문집
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• 제13권2호
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• pp.139-146
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• 2017

이 연구는 다중운집행사의 안전 확보를 위한 경찰개입에 대하여 시민들이 느끼는 인식을 조사하는 연구로서 다중운집행사에서 시민들의 요구와 민간경비에 대한 신뢰수준을 판단하는데 중요한 역할을 하는 연구이다. 최근 들어, 시민들의 여가에 대한 요구가 증가함에 따라 다중운집행사를 개최하는 빈도가 높아지고 있다. 이러한 다중운집행사는 많은 사람들이 제한된 장소에 집중적으로 모여들기 때문에 사소한 문제가 심각한 위협으로 피해가 증가하는 경우가 많다. 이러한 문제를 해결하기 위하여 많은 경찰력이 동원되고 있으나 경찰동원에 대한 시민들의 만족수준을 파악하지 못하여 과도한 경비로 행사에 영향을 주는 경우가 종종 발생하였다. 이러한 문제에 대하여 이 연구에서는 시민들이 요구하는 다중운집행사에 대한 경찰개입 수준에 대한 설문조사를 통하여 시민들의 요구수준에 대하여 살펴보았다. 분석 결과, 많은 시민들이 다중운집행사에서 안전총괄 책임자는 경찰이라는 인식을 가지고 있는 것으로 나타났으며, 다중운집행사에서 안전 확보를 위하여 경찰의 채용이 늘어야한다고 인식하는 것으로 나타났다. 그리고, 다중운집행사의 안전 확보를 위하여 경찰이 더 많이 참여해야 한다고 생각하는 것으로 나탔으며, 민간경비의 역할에 대하여 크게 신뢰하지 않는 것으로 나타났다.

• Spatial Information Research
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• 제18권5호
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• pp.47-54
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• 2010

기존의 소방대상시설물 도면은 이미지도면이나 CAD도면 형태의 2차원 도면형태로 존재하고 있다. 구축되어 있는 데이터의 형태도 다양한 방식으로 이루어져 있기 때문에 소방방재업무에서 필요로 하는 신속 정확한 대응체계를 위해서는 기존의 2차원 도면형태로 구축된 도면을 3차원으로 변환할 필요가 있다. 본 연구에서는 소방방재 대상이 되는 2차원 건축도면을 3차원 공간정보로 손쉽게 구축하기 위하여 건축도면에 대한 분석과 3차원 공간정보 데이터모델을 설계하고 이를 3차원 공간정보로 변환할 수 있는 툴을 개발하였다. 본 논문에서 제안한 소방대상 2차원 도면의 3차원 변환방법을 통하여 다량의 2차원 도면을 3차원 공간정보로 쉽게 변환할 수 있으며 이를 통해 소방방재 업무의 활용도를 향상 시킬 수 있다.

• Advances in environmental research
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• 제9권2호
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• pp.97-107
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• 2020

The indiscriminate growth in global population poses a threat to the world in handling and disposal of Municipal solid waste. Rapid urban growth increases the production, consumption and generation of Municipal solid waste which leads to a drastic change in the environment. The methane produced from the Municipal Solid waste accounts for up to 11% global anthropogenic emissions, which is a major cause for global warming. This study reports the methane emission estimation using IPCC default, TNO, LandGEM, EPER and close flux chamber from open dump yards at Perungudi and Kodungaiyur in Chennai, India. The result reveals that the methane emission using close flux chamber was in the range of 8.8 Gg/yr-11.3 Gg/yr and 6.1Gg/yr to 9.1 Gg/yr at Kodungaiyur and Perungudi dump yard respectively. The per capita waste generation was estimated based on waste generation and population. The waste generation potential was projected using linear regression model for the period 2017-2050. The trend of CH₄ emission in the actual field measurement were increased every year, similarly the emission trend also increased in IPCC default method (mass balance approach), EPER Germany (zero order decay model) where as TNO and Land GEM (first order decay model) were decreased. The present study reveals that Kodungaiyur dump yard is more vulnerable to methane emission compared to Perungudi dump yard and has more potential in waste to energy conversion mechanisms than compare to Perungudi dump yard.

• 한국엔터테인먼트산업학회논문지
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• 제13권4호
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• pp.229-240
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• 2019

우리나라는 자연재난 및 인위적인 재난 등 다양한 재난을 겪고 있다. 본 연구는 재난관리 단계 중 대응 단계에서 활동하는 소방 구급 대원의 재난대응 능력에 대한 인식을 파악하기 위한 서술적 조사연구이다. 연구 대상자는 G도 소재 소방서 구급 대원 중 현장 경험 2년 이상의 1급 응급구조사를 대상으로 하였으며, 현장대응 능력의 하위 요소에 대한 문항이 포함된 설문지를 작성하여 최종 수집된 설문지 161건을 SPSS Program을 이용하여 분석하였다. 연구 결과 대상자의 환자분류 능력, 환자처치 능력, 환자이송 능력, 재난지원 능력 및 재난대응 신속성의 평균은 각각 3.53점, 3.68점, 3.66점, 2.95점 및 3.44점이었으며, 다중회귀 분석의 결과로 재난대응 신속성에 영향을 미치는 변수는 환자처치 능력, 환자이송 능력, 재난 지원 능력 순으로 나타났다. 결론적으로, 소방 구급 대원은 재난대응 신속성을 향상시키기 위해서는 환자처치 능력, 환자이송 능력, 재난지원 능력을 우선적으로 고려해야 하겠으며, 궁극적으로 재난대응 능력을 향상시키기 위한 재난대응 지침을 마련해야 하겠다.

• 한국물환경학회지
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• 제36권3호
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• pp.185-193
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• 2020

Bimodal flocculation describes the aggregation and breakage processes of the flocculi (or primary particles) and the flocs in the water environment. Bimodal flocculation causes bimodal size distribution with the two separate peaks of the flocculi and the flocs. Extracellular polymeric substances and ionic species common in the water environment increase the occurrence of bimodal flocculation and flocculi-floc size distribution, under the flocculation mechanisms of electrostatic attraction and polymeric bridging. This study investigated bimodal flocculation and flocculi-floc size distribution, with respect to the extracellular polymeric substance concentration and ionic strength in the kaolinite-containing suspension. The batch flocculation tests comprising 0.12 g/L of kaolinite showed that the highest flocculation potential occurred at the lowest xanthan gum (as extracellular polymeric substances) concentration, under all the ionic strengths of 0.001, 0.01, and 0.1 M NaCl. Also, it was important to note that the higher ionic strength resulted in the higher flocculation potential, at all the xanthan gum concentrations. The bimodal flocculation and flocculi-floc size distribution became apparent in the experimental conditions, which had low and intermediate flocculation potential. Besides the polymeric bridging flocculation, steric stabilization increased the flocculi mass fraction against the floc mass fraction, thereby developing the bimodal size distribution.

• 한국물환경학회지
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• 제21권4호
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• pp.385-392
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• 2005

The control of nonpoint source pollution is essentially needed to successfully perform the Total Maximum Daily Load program. Of the various land uses in the nonpoint source, the paved areas such as a parking lot and a bridge are stormwater intensive land uses because of high imperviousness and high pollutant mass emissions. This research was performed to understand the magnitude and nature of the stormwater emissions with the purposes of quantifying stormwater pollutant concentrations and mass emission rates from a parking lot and a bridge. Two monitoring sites in Kongju city were equipped with an automatic rainfall gages and an automatic flow meter for accumulating the data such as rainfall, water quality and runoff flow rates. This paper will summarize the metal concentration changes during the storm duration and metal EMCs to characterize the concentration profiles in a parking lot and a bridge. Also a new concept, dynamic EMC, will be proposed to find the relationship between EMC and first flush effect. It can be used to determine the economical treatment criteria in best management practices.

• Geomechanics and Engineering
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• 제22권5호
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• pp.461-473
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• 2020

Natural rock mass contains defects of different shapes, usually filled with inclusions such as clay or gravel. The presence of inclusions affects the failure characteristics and mechanical properties of rock mass. In this study, the strength and failure characteristics of rock with inclusions were studied using the particle flow code under uniaxial compression. The results show that the presence of inclusions not only improves the mechanical properties of rock with defects but also increases the bearing capacity of rock. Circular inclusion has the most obvious effect on improving model strength. The inclusions affect the stress distribution, development of initial crack, change in crack propagation characteristics, and failure mode of rock. In defect models, concentration area of the maximum tensile stress is generated at the top and bottom of defect, and the maximum compressive stress is distributed on the left and right sides of defect. In filled models, the tensile stress and compressive stress are uniformly distributed. Failing mode of defect models is mainly tensile failure, while that of filled models is mainly shear failure.

• 국제초고층학회논문집
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• 제9권3호
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• pp.273-282
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• 2020

An innovative high-rise timber-concrete hybrid structure was proposed in previous research, which is composed of the concrete frame-tube structure and the prefabricated timber modules as main structure and substructures, respectively. Considering that the timber substructures are built on the concrete floors at a different height, the floor response spectrum is more effective in estimating the seismic response of substructures. In this paper, the floor response spectra of the hybrid structure with different structural parameters were calculated using dynamic time-history analysis. Firstly, one simplified model that can well predict the seismic response of the hybrid structure was proposed and validated. Then the construction site, the mass ratio and the frequency ratio of the main-sub structure, and the damping ratio of the substructures were discussed. The results demonstrate that the peaks of the floor response spectra usually occur near the vibration periods of the whole structure, among which the first two peaks stand out; In most cases, the acceleration amplification effect on substructures tends to be more evident when the construction site is farther from the fault rupture; On the other hand, the acceleration response of substructures can be effectively reduced with an appropriate increase in the mass ratio of the main-sub structure and the damping ratio of the substructures; However, the frequency ratio of the main-sub structure has no discernible effect on the floor response spectra. This study investigates the characteristics of the floor response spectrum of the novel timber-concrete structure, which supports the future applications of such hybrid structure in high-rise buildings.

• 한국재난정보학회 논문집
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• 제5권1호
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• pp.78-100
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• 2009

This study is to protect peoples' life, minimize the property damage by coping with threats quickly and take more preventive measures in advance against nuclear bomb, CBR, and potential explosive. For this, CBRNE(Chemical, Biological, Radiological, Nuclear, Explosive) program research was used. Thanks to advance in technology, terrorist groups and even individuals make or keep nuclear and CBR weapons. And also it's likely that disaster and threats from a toxic gas, acute pathogens, accidents in the nuclear power plants and a high explosive could be happened a lot. Recently more organized terrorist groups maintain random attacks for unspecified individuals and also it's highly likely that a large-scale terrorist attack by WMD and CBRNEwill be done. To take strict measures against CBRNE attacks by terrorists is on the rise as an urgent national task. Moreover biological weapons are relatively easy and inexpensive to obtain or produce and cause mass casualties with a small amount. For this reason, more than 25 countries have already possessed them. In the 21 st century, the international safety environment marks the age of complicated threats : transnational threats such as comprehensive security and terror, organized crime, drug smuggling, illegal trade of weapons of mass destruction, and environmental disruption along with traditional security threats. These cause military threats, terror threats, and CBRNE threats in our daily life to grow. Therefore it needs to come up with measures in such areas as research development, policy, training program. Major industrial nations on CBRNE like USA, Canada, Switzerland, and Israel have implemented various educational programs. These researches could be utilized as basic materials for drawing up plans for civil defense, emergency services and worldwide countermeasures against CBRNE.