• 한국콘텐츠학회논문지
• /
• 제12권2호
• /
• pp.284-291
• /
• 2012

본 연구는 2004년 이후 최근까지의 위기관리 분야 사례연구 논문의 연구경향을 연구문제 및 사례 대상에 대한 분석과 일반화 과정에 초점을 두며, 과학적 추론으로써 사례연구방법 활용에 있어서 향후 연구의 발전방안을 제시하고자 하였다. 분석 결과 현재 한국에서의 위기관리 분야 연구는 거의 대부분이 개별기술적 사례연구로서 위기관리 분야의 개별 분과학문으로서의 발전을 위한 이론 형성에 기여할 수 있는 연구가 드문 것으로 나타났으며, 연구설계에 있어서도 보다 치밀한 사례연구의 설계를 위한 연구문제의 규정 및 사례선정의 논리, 자료분석을 위한 틀을 구체적으로 제시하는 경우가 드문 문제점이 나타나 향후 사례연구 방법에 대한 접근에 있어 연구자들의 연구설계에 대한 심도 있는 접근이 요구된다 할 것이다.

• 한국정보통신학회:학술대회논문집
• /
• 한국해양정보통신학회 2005년도 추계종합학술대회
• /
• pp.1081-1084
• /
• 2005

각종 재난 및 재해로부터 시민의 생명과 재산을 보호하기 위한 소방방재시스템, 119긴급구조 시스템 등이 현재 국내에서 구축되어 활용되고 있다. 이 시스템들의 대부분이 119신고처리체계통합, 신고자 위치정보 추적, 출동대 자동편성 및 일제지령 등의 기능을 제공하고 있으며, 이를 위하여 GIS, 텔레매틱스, CTI, TTS 등의 최신 기술들을 활용하고 있다. 그러나 도시 시설물의고층화, 복잡화, 지하화 및 에너지 사용 증가로 인하여 점점 재해 및 재난 규모가 대형화되고 있는 실정이며, 기존 시스템들의 기능으로 점점 한계에 봉착할 수 밖에 없다. 본 논문에서는 이러한 문제점을 해결하기 위하여 향후 종합방재시스템의 기능을 향상시킬 수 있는 여러 가지 고도화 방안에 대하여 살펴본다.

• 대한건축학회논문집:계획계
• /
• 제35권2호
• /
• pp.23-31
• /
• 2019

The purpose is to suggest directions for the creation of a manufacturing space that can promote the recovery of the industrial ecosystem in the city and the start-up activities of creative workers and manufacturers. To do this, we compared the cases of US and domestic maker space. The analysis results are as follows. First, we need a plan of location and space. Second, it is necessary to establish the principle of equipment construction. Third, various programs for education, collaboration and exchange should be provided. It is thought that the maker space plan and construction direction derived from this study can be used as a basic data to be used for the formation of domestic makerspace in the future.

• 국제강구조저널
• /
• 제18권5호
• /
• pp.1684-1698
• /
• 2018

Fragility functions are determined for braced steel moment frames (SMFs) with plans such as square-, T-, L-, U-, trapezoidal-, and semicircular-shaped, subjected to blast. The frames are designed for gravity and seismic loads, but not necessarily for the blast loads. The blast load is computed for a wide range of scenarios involving different parameters, viz. charge weight, standoff distance, and blast location relative to plan of the structure followed by nonlinear dynamic analysis of the frames. The members failing in rotation lead to partial collapse due to plastic mechanism formation. The probabilities of partial collapse of the SMFs, with and without bracing system, due to the blast loading are computed to plot fragility curves. The charge weight and standoff distance are taken as Gaussian random input variables. The extent of propagation of the uncertainties in the input parameters onto the response quantities and fragility of the SMFs is assessed by computing Sobol sensitivity indices. The probabilistic analysis is conducted using Monte Carlo simulations. The frames have least failure probability for blasts occurring in front of their corners or convex face. Further, the unbraced frames are observed to have higher fragility as compared to counterpart braced frames for far-off detonations.

• Earthquakes and Structures
• /
• 제22권4호
• /
• pp.345-353
• /
• 2022

The configuration of an open ground floor (pilotis) is a common and very critical irregularity observed in multistory reinforced concrete frame structures. The characteristics and the geometrical formation of the beams of the first story proved to be a critical parameter for the overall seismic behavior of this type of Reinforced Concrete (RC) structures. In this work the combination of open ground floor (pilotis) morphology with very strong perimetrical beams at the level of the first story is studied. The observation of the seismic damages and the in situ measurements of the fundamental period of four buildings with this morphology and Π-shaped plan view are presented herein. Further analytical results of a pilotis type Π-shaped RC structure are also included in the study. From the measurements and the analytical results yield that the open ground floor configuration greatly influences the fundamental period whereas this morphology in combination with strong beams can lead to severe local shear damages in the columns of the ground floor. The structural damage was limited in the columns of the ground floor and yet based on the changes of the in situ measured fundamental period the damaged level is assessed as DI=88%. Furthermore, due to the Π-shape of the plan view the tendency of the parts of the building to move independently strongly influences the distribution of the damages over the ground floor vertical elements.

• Journal of Advanced Marine Engineering and Technology
• /
• 제33권4호
• /
• pp.451-458
• /
• 2009

This experimental study was conducted to investigate macroscopic characteristics of the flash boiling spray with tow component mixing fuel. Homogeneous Charge Compression Ignition (HCCI) is a newer combustion method for internal combustion engines to reduce nitrogen oxide and particulate matter simultaneously. But it is difficult to put this combustion method to practical use in an engine because of such problems as instability of combustion in low load operating conditions and knocking in high load operating conditions. In HCCI, combustion characteristics and exhaust emissions depend on conditions of air/fuel mixture and chemical reactions of fuel molecules. The fuel design approach is achieved by mixing two components which differ in properties such as density, viscosity, volatility, ignitability and so on. We plan to apply the fuel design approach to HCCI combustion generated in a real engine, and examine the possibility of mixture formation control using the flash boiling spray. Spray characteristics of two component fuel with a flash boiling phenomenon was investigated using Shlieren and Mie scattering photography. Test fuel was injected into a constant volume vessel at ambient conditions imitated injection timing BTDC of a real engine. As a result, it was found that a flash boiling phenomenon greatly changed spray structure, especially in the conditions of lower temperature and density. Therefore, availability of mixture formation control using flash boiling spray was suggested.

• 농촌계획
• /
• 제17권2호
• /
• pp.33-41
• /
• 2011

To evaluate the value of a preserved tree as rural landscape resource, the growth environment and health condition was investigated, and the image evaluation was implemented on land~ape architectural major undergraduate students for zelkova trees in Yesan-gun. The image evaluation results of zelkova trees were as followings; 1) Typical image of preserved tree examined by Semantic Differential Scale were 'Old', 'Big', and 'Good'. 2) The 'big' image of zelkova tree and the height of tree, the width of tree crown, the breast girth of tree, the root girth of tree, the external formation of tree, and the health of tree bark is mutually related. Especially, the correlation between the 'big' and the external formation and the width of tree crown is high. 3) Typical image of preserved tree examined by Likert Scale were 'Natural', 'Green', 'Peaceful', and 'Rural'. 4) The preservation necessity for preserved tree was highly related with the state of ground, and the management necessity for preserved tree was highly related with contamination level and the state of ground. The appropriate management plan for preserved tree are proposed to improve the quality of rural landscape(basis of these results).

• 분석과학
• /
• 제8권4호
• /
• pp.807-814
• /
• 1995

Accurate measurements of ozone precursors are required to understand the process and extent of ozone formation in rural and urban areas. Nonmethane hydrocarbons (NMHCs) have been identified as important ozone precursors. Identification and quantification of NMHCs are difficult because of the large number present and the wide molecular weight range encountered in typical air samples. A major plan of the research team of the Climate and Air Quality Taiwan Station (CATs) was the measurement of atmospheric nonmethane hydrocarbons. An analytical method has been development for the analysis of the individual nonmethane hydrocarbons in ambient air at ppb (v) and subppb(v) levels. The whole ambient air samples were collected in canisters and analyzed by GC-FID with $Al_2O_3$/KCl PLOT column. Our targeted for quantitative analysis 43 compounds that may be substantial contributors to ozone formation. The retention indices and molar response factors of some commercially available $C_2{\sim}C_{10}$ hydrocarbons were determined and used to identify and quantify air samples. A quality assurance program was instituted to ensure that good measurements were made by participating in the International Nonmethane Hydrocarbon Intercomparison Experiments (NOMHICE).

• 천문학논총
• /
• 제30권2호
• /
• pp.621-624
• /
• 2015

We present the current status (as of August 2014) of SPICA (Space Infrared Telescope for Cosmology and Astrophysics), which is a mission optimized for mid- and far-infrared astronomy with a cryogenically cooled 3m-class telescope. SPICA is expected to achieve high spatial resolution and unprecedented sensitivity in the mid- and far-infrared, which will enable us to address a number of key problems in present-day astronomy, ranging from the star-formation history of the universe to the formation of planets. We have carried out the "Risk Mitigation Phase" activity, in which key technologies essential to the realization of the mission have been extensively developed. Consequently, technical risks for the success of the mission have been significantly mitigated. Along with these technical activities, the international collaboration framework of SPICA has been revisited, which resulted in la arger contribution from ESA than that in the original plan. To enable the ESA participation under the new framework, a SPICA proposal to ESA is under consideration as a medium-class mission under the framework of the ESA Cosmic Vision. The target launch year of SPICA under the new framework is the mid-2020s.

• Childhood Kidney Diseases
• /
• 제17권2호
• /
• pp.29-34
• /
• 2013

Urine production is vital for the removal of certain waste products produced by metabolism in the body and for the maintenance of homeostasis in the body. The kidneys produce urine by the following three precisely regulated processes: filtration, reabsorption, and secretion. Urine is composed of water, certain electrolytes, and various waste products that are filtered out of the blood through the glomeruli. The physical features of urine are evaluated carefully to detect any abnormal findings that may indicate underlying diseases in the genitourinary system. A change in urine color may indicate an underlying pathological condition, although many of the causes of abnormal urine color are benign effects of medications and foods. A characteristic and specific odor may be the result of a metabolic disease rather than a concentrated specimen or a simple urinary tract infection. Although transient changes in urine output and nocturia are usually benign conditions, persistent abnormal findings require further workup, with a thorough medical history taking. This article presents many of the conditions that physicians may encounter and will help them in the diagnosis and in establishing a treatment plan.