돌발홍수 발생시 도시하천의 치수안전도 분석

박호상,심우배,송재우,Park, Ho-Sang,Sim, Ou-Bae,Song, Jai-Woo 한국방재학회 2003 한국방재학회논문집 Vol.3 No.3

본 연구에서는 국지성 이상호우에 대한 하천의 치수 안전도를 분석하기 위하며 서울의 도시하천중 지방2급 하천인 홍제천을 연구 대상하천으로 선정하였고, 최근 발생한 이상호우 중에서 서울에 많은 피해를 입힌 2001년 7월 14일${\sim}$15일 강우 310.1mm와 서울지역 가능최대강수량(PMP)740.0mm를 적용 강우로 선정하였다. 홍제천의 치수 안전도를 분석한 결과, 계획빈도인 50년인 경우, 안전단면이 85%, 관리단면이 15%, 위험단면은 발생치 않았으나, 100년 빈도에서 안전단면이 5% 감소하고 관리단면이 4% 위험단면은 2% 증가하였다. 빈도가 증가함에 따라 증감율은 작게 나타났고 200년 빈도 이후에는 관리단면은 거의 변화가 없었으며 위험단면이 다소 증가하여 300년 빈도에서는 50년 빈도에 비해 8%, 500년 빈도에서는 12% 증가하였고 1000년 빈도에서는 위험단면이 19%, 관리단면이 13% 크게 증가하였다. In this study, safety analysis of river in flash flood due to local extraordinary rainfall was conducted for the Hong-Je river, which was selected as a representative sample basin because it is one of the most urbanized rivers in Seoul. The rainfall data of precipitation 310.1 mm and probable maximum precipitation (PMP) 740.0 mm in July $14{\sim}15$, 2001 was used to perform safety analysis. Resulting of safety analysis of the flood control in Hong-Je river, case of the 50 year of design frequency, safety section, management section, and danger section were represented to be 85%, 15%, and 0% respectively. For the 200 year of design frequency, safety section decreased by 6% and management section and danger section increment by 4% and 2%, respectively, The variation of management section was not observed with respect to 200 year of frequency. Little variation of safety value for management section for 300 and 500 of frequency increased by 8% and 12% relative to 50 year of frequency, respectively. management section and danger section for 1000 year of frequency increased by 19% and 13% relative to 50 year of frequency.

탄소섬유 프리폼의 고밀도화 공정을 위한 Matrix Precursor 핏치의 개질

김호상,오인석,최돈묵,박인서,주혁종 ( Ho Sang Kim,In Seok Oh,Don Mook Choi,In Seo Park,Hyeok Jong Joo ) 한국복합재료학회 1996 Composites research Vol.9 No.4

Doxylamine 중독에 의한 횡문근융해증 2예

손호상(Ho Sang Sohn),안기성(Ki Sung Ahn),박정기(Jeong Ki Park),정의달(Ye Dal Jeong),조선주(Sun Joo Cho),여동근(Dong Geun Yeo),최정윤(Jung Yoon Cheo),이지현(Jee Hyen Lee) 대한신장학회 2000 Kidney Research and Clinical Practice Vol.19 No.3

Doxylamine succinate is common over-the-counter sleep medication that is frequently involved in accidental poisonings and suicide attempts. Doxylamine overdose is generally directed at the anticholinergic effect including autonomic,and central nervous system effect and direct cardiac toxicity. Rarely, rhabdo-myolysis has been reported with doxylamine over-dose. We experienced two cases of rhabdomyolysis with overdose of doxylamine in 17-year-old and 31-year-old male. They were diagnosed with high levels of creatine phosphokinase in serum, myoglobin in serum and urine, and increased radionuclide uptake of muscles in (99m)Tc-MDP bone scan. Patients recovered without any complications with hydration and diuresis. Clinicians should be aware of the possibility of rhabdomyolysis in patients with doxylamine overdose.

황산용액에 의한 전기로 제강분진으로부터 Zn의 침출

박수지 ( Su Ji Park ),손인준 ( In Joon Son ),손호상 ( Ho Sang Sohn ) 대한금속재료학회(구 대한금속학회) 2015 대한금속·재료학회지 Vol.53 No.11

The sulfuric acid leaching of electric arc furnace(EAF) dust was studied in an attempt to find a suitable hydrometallurgical method for the recovery of zinc. The effect of acid concentration, reaction temperature, stirring rate and solid-to-liquid ratio on Zn and Fe extraction from the solution was investigated. It was found that the leaching rate of Zn and Fe increased with increasing reaction temperature and sulfuric-acid concentration. Examination of data using a shrinking core model suggest that the leaching rate is controlled by mixture kinetics. The activation energy for the leaching reaction of Zn and Fe were calculated as 44.45 kJ/mol and 65.45 kJ/mol, respectively.

방과 후 12주간 자율체육활동이 남자고등학생의 체력과 신체적 자기개념에 미치는 영향

박충효(Chung Hyo Park),변재철(Jae Chul Byun),류호상(Ho Sang Yoo) 한국발육발달학회 2006 한국발육발달학회지 Vol.14 No.4

The purpose of this study was to determine the effects of after-school physical activity on fitness and physical self-concept in male high school students. A total of 120 high school male students were randomly assigned to either experimental group (n=60) or control group (n=60). The experiment all group participated in one intramural sports activity either (soccer, basketball or badminton) for ninety minutes three times a week (Monday, Wednesday and Friday) during twelve weeks. Analysis of covariance (ANCOVA) using pre-test score as a covariant showed that the experimental group was significantly better than the control group in 50m running push up, sit up, standing long jump, sit and reach, 1600m running (p<.001). Health, regular exercise, muscle strength, confidence, sustaining power of the physical self-concept were higher in the experimental group compared to the control group. It was concluded that the participation of intramural sports have positive effects on physical fitness and physical self-concepts in male high school students.

황산에 의한 페로망간 집진분 중의 망간 침출

박수지,손호상,Park, Suji,Sohn, Ho-Sang 한국자원리싸이클링학회 2015 資源 리싸이클링 Vol.24 No.6

본 연구에서는 페로망간 제조공정에서 발생한 집진분의 황산침출에 대하여 조사하였다. 황산의 농도, 반응온도, 교반속도, 입자크기 및 고-액비가 집진분 중의 Mn과 Fe의 침출에 미치는 영향에 대하여 검토하였다. Mn과 Fe의 침출속도는 황산의 농도가 높고 반응온도가 높을수록 높아졌다. 실험결과를 입자수축모델을 이용하여 검토한 결과 침출반응은 입자표면에서의 화학반응에 의해서 율속되는 것으로 생각된다. Mn과 Fe 침출반응의 활성화에너지는 각각 79.55 kJ/mol과 77.48 kJ/mol로 계산되었다. The sulfuric acid leaching of ferromanganese dust was studied. The effect of acid concentration, reaction temperature, stirring rate, particle size and solid to liquid ratio on Mn and Fe extraction in the solution were investigated. It was found that the leaching rate of Mn and Fe increased with increasing reaction temperature and sulfuric acid concentration. Examination of data by shrinking core model suggested that the leaching rate is controlled by chemical reaction at the surface of particle. The activation energy for the leaching reaction of Mn and Fe were calculated to be 79.55 kJ/mol and 77.48 kJ/mol, respectively.

CT105로 유도된 인간신경아세포종 세포주에서 전매단의 항치매 효과

송호상,박치상,박창국,Song Ho-Sang,Park Chi-Sang,Park Chang-Gook 대한한의학방제학회 2003 大韓韓醫學方劑學會誌 Vol.11 No.2

Alzheimer's disease(AD) is a geriatric dementia that is widespread in old age. In the near future AD will be the biggest problem in public health service. Although a variety of oriental prescriptions in study Jeonmaedan have been traditionally utilized for the treatment of AD, their pharmacological effects and action mechanisms have not yet fully elucidated. It has been widely believed that A${\beta}$ peptide devided from APP causes apoptotic neurotoxicity in AD brain. However, recent evidence suggests that CTl05(carboxy terminal 105 amino acid peptide fragment of APP) may be an important factor causing neurotoxicity in AD. In addition, AD is one of brain degeneration disease. So we studied on herbal medicine that have a relation of brain degeneration. In Oriental Medicine, Jeonmaedan has been used for disease in relation to brain degeneration. As the result of this study, in Jeonmaedan the apoptosis in the nervous system is inhibited, the repair against the degerneration of SK-N-SH cell lines by CT105 expression is promoted. So Jeonmaedan may be beneficial for the treatment of AD.

국부좌굴과 뒤틀림좌굴이 발생하는 종방향 보강재로 보강된 강판의 압축강도

박호상,서상정,권영봉,Park, Ho-Sang,Seo, Sang-Jung,Kwon, Young-Bong 한국강구조학회 2010 韓國鋼構造學會 論文集 Vol.22 No.3

This paper describes an experimental research on the structural behavior and the ultimate strength of longitudinally stiffened plates subjected to local, distortional, or mixed-mode buckling under compression. The stiffened plate undergoes local, distortional, or interactive local-distortional buckling according to the flexural rigidity of the plate's longitudinal stiffeners and the width-thickness ratios of the sub-panels of the stiffened plate. A significant post-buckling strength in the local and distortional modes affects the ultimate strength of the longitudinally stiffened plate. Compression tests were conducted on stiffened plates that were fabricated from 4mm-thick SM400 steel plates with a nominal yield stress of 235MPa. A simple strength formula for the Direct Strength Method based on the test results was proposed. This paper proves that the Direct Strength Method can properly predict the ultimate strength of stiffened plates when the local buckling and distortional buckling occur simultaneously or nearly simultaneously. 본 논문에는 압축력을 받는 국부좌굴, 뒤틀림좌굴 및 두 좌굴의 혼합좌굴이 발생하는 종방향 보강재가 부착된 강판의 거동 및 극한 강도에 대한 실험적인 연구를 서술하였다. 압축력을 받는 보강판의 경우 서브패널의 폭-두께비와 보강재의 휨강성에 따라서 국부좌굴, 뒤틀림좌굴 또는 두 좌굴의 혼합형태의 좌굴이 발생하게 되고, 상당한 크기의 후좌굴강도가 발현되어 보강판의 극한강도를 지배하게 된다. 보강재의 휨강성과 보강재로 구분된 서브패널의 폭-두께비가 다른 두께 4.0mm, 공칭항복강도 235MP인 SM400 강판으로 제작된 보강판의 중심압축실험을 수행하고 유한요소해석결과와 비교하여 검증하였다. 실험 결과에 근거하여 보강판의 극한강도를 예측할 수 있는 직접강도법을 적용한 설계압축강도식을 제안하였다. 제안된 직접강도법은 뒤틀림좌굴 또는 국부좌굴과 뒤틀림좌굴이 혼합하여 발생하는 종방향 보강재로 보강된 강판의 극한강도를 적절하게 예측할 수 있는 것으로 판단되었다.

데이터 마이닝을 이용한 서비스 거부 공격 탐지 기법

박호상(Ho-sang Park),조은경(Eun-kung Cho),강용혁(Yong-hyeong Kang),엄영익(Young lk Eom) 한국정보과학회 2003 한국정보과학회 학술발표논문집 Vol.30 No.2Ⅰ

DoS (Denial of Service) 공격은 주로 victim 호스트에 대량의 패킷을 보내거나 비정상적인 패킷을 보냄으로써 정상 사용자가 서비스를 이용하지 못하도록 하는 공격을 의미한다. 이러한 DoS 공격을 탐지하기 위해 다양한 기법들이 개발되어 왔으나, 공격의 종류와 방법은 시간이 흐를수록 매우 다양해지고 있어 이를 탐지하는데 한계가 있다. 본 논문에서는 네트워크 패킷의 헤더정보를 감사 자료로 가지고 있는 NIDS(Network-based Intrusion Detection System)에 데이터 마이닝 기법을 적용시켜 이러한 DoS 공격을 탐지할 수 있는 기법을 제안한다. 이 기법을 이용하면 빠르고 자동화된 방법으로 DoS 공격할 수 있다. 본 논문에서는 제안 기법을 이용하여 SYN Flooding 공격과 Teardown 공격에 대한 탐지가 가능함을 보인다.

하우스푸어의 발생원인과 주택시장에 대한 영향 분석

현호상(Hyun, Ho-Sang),이현수(Lee, Hyun-Soo),박문서(Park, Moon-Seo) 대한건축학회 2013 대한건축학회 학술발표대회 논문집 Vol.33 No.1