풍수해 위험도가 반영된 지역별 위험도 산정

임현택 ( Hyun-tae Lim ),이희춘 ( Hee-chun Lee ),박성용 ( Sung-yong Park ),민연식 ( Yeon-sik Min ),이충원 ( Chung-won Lee ),김용성 ( Yong-seong Kim ) 한국농공학회 2014 한국농공학회 학술대회초록집 Vol.2014 No.-

최근 기상이변에 의한 자연재해의 발생빈도가 증가하고 있으며, 피해규모 또한 대형화·광역화되고 있다. 최근 10년간 소방방재청의 자료를 조사한 결과, 자연재해 원인별 피해규모는 태풍(57.1%), 호우(31.3%), 대설(11.5%) 등이 상위를 차지하고 있어 이에 대한 대책이 시급하다(소방방재청, 2003-2012). 이러한 대책으로, 우리나라는 현재 풍수해보험을 시행하고 있다. 풍수해보험은 소방방재청이 관장하고 민간보험사가 운영하는 정책보험으로, 보험계약자가 부담해야 하는 보험료의 일부를 국가 및 지방자치단체에서 보조함으로써 국민이 저렴한 보험료로 예기치 못한 풍수해에 대해 능동적으로 대처할 수 있도록 하는 선진국형 재난관리 제도이다. 풍수해보험의 대상재해는 자연재해대책법 제2조 제3항에서 정의한 태풍, 홍수, 호우, 강풍, 풍랑, 해일, 대설이며, 이를 크게 홍수, 강풍, 대설로 분류할 수 있다. 그러나 2008년 4월 전국적으로 시행된 풍수해보험은 현재 저조한 가입률을 보이고 있으며, 풍수해위험이 높은 지역의 소유자들만 가입하는 역선택의 위험이 상존하고 있다. 이와 같은 문제의 주요 원인 중 하나는 불합리한 요율체계이다. 현 요율체계는 목적물의 위험도와 관계없이 전국 232개시·군·구를 각각 하나의 위험등급으로 구분하여 동일 시·군·구내에서는 보험목적물(주택, 비닐하우스 등)에 동일한 보험요율이 적용되고 있다. 따라서, 본 연구에서는 이러한 지역별 동일 요율적용의 문제점에 대한 대안으로 전국의 풍수해(수해·풍해·설해) 피해를 조사·분석하여 대상지역의 피해 위험도를 산정하였으며, 지역별로 차등화 된 보험요율 적용의 적정성을 검토함으로써 현실적인 풍수해보험 제도 수립에 기여하고자 하였다.

대한민국 서해, 남해 수중 채널 환경에서 OFDM 파라미터에 따른 실해역 성능 분석

정태건,임현택,임태호,Chung, Tea-Geon,Lim, Hyun-Taek,Im, Tae-Ho 한국정보통신학회 2020 한국정보통신학회논문지 Vol.24 No.8

본 논문은 대한민국 서해와 남해에서의 거리에 따른 성능분석을 위해 실해역 측정을 했다. 서해와 남해 선박의 거리와 전송율 관점에서 측정된 실해역 데이터를 기반으로 데이터 반복 전송 횟수와 파일럿 심볼 배치 간격 파라미터를 조절하여 서해와 남해 성능 비교를 통해 수중OFDM 시스템을 성능을 분석하였다. 결론으로는 전송율과 거리에서 남해의 성능을 비교했을 때 파라미터가 같은 조건에서 남해 5km, 서해 1km 거리에서 BER성능이 남해가 성능이 비슷하였으며, 남해 10km,서해 3km에서 파일럿 심볼의 배치간격을 (𝚫f, 𝚫t) = (6, 3)의 심볼과 PRB가 반복되는 (R_f, R_t) = (2, 1)에서 남해는 1078.92bit/s 서해는 1384.57bit/s으로 전송율관점에서도 남해에서 장거리에서 높은 데이터를 보낼 수 있는걸 확인하였다 AThis paper measured real sea area for performance analysis according to distance from west sea and south sea of Korea. The performance of the underwater OFDM system was analyzed by comparing the performance of the West and South Seas by adjusting the number of data repetitive transmissions and the pilot symbol placement interval parameters based on the real-sea data measured from the distance and Data rate of the West and South Sea vessels. In conclusion, when comparing the performance of the South Sea at the Data rate and distance, the BER performance of the South Sea was similar at the 5 km South Sea and 1 km West Sea under the same conditions. Placement interval of pilot symbol at 10 km of South Sea and 3 km of West Sea is (𝚫f, 𝚫t) = (6, 3) and the number of times the PRB is (R_f, R_t) = (2, 1) repeated. We confirmed that we can send high data over long distances in the South Sea.

적응성 일반화 역전파법을 이용한 수렴속도의 향상과 안정성 확보

성태욱(Tae Wook Sung),임현택(Hyun Teag Lim),임동철(Dong Chul Lim),송도선(Do Sun Song),이행세(Haing Sei Lee) 대한전자공학회 1997 대한전자공학회 학술대회 Vol.1997 No.6

에이디 긴장성 동공의 임상양상

이혜진,이진영,엄태웅,임현택,안효숙,Hye Jin Lee,Jin Young Lee,Tae Woong Um,Hyun Taek Lim,Hyo Sook Ahn 대한안과학회 2013 대한안과학회지 Vol.54 No.5

Purpose: To report the clinical features of Adie’s tonic pupil. Methods: The medical records of 22 patients who had been diagnosed with Adie’s tonic pupil from February 1998 to February 2009, were retrospectively reviewed. On March 2010, a cross-sectional examination was performed in 16 patients (19 eyes) who underwent a follow-up of more than 1 year. Measurements included pupil size in room light, bright light and in darkness; near point of accommodation; presence of segmental iris palsy; light-near dissociation; denervation supersensitivity; corneal sensitivity; and deep tendon reflex (DTR). Results: Among the patients studied, 16 were women in Adie’s tonic pupils. Only 3 of patients had bilateral involvement. The mean age of onset was 38.3 years. The mean size of Adie’s tonic pupils was 2.3 mm larger than the fellow eyes. Segmental iris palsy was detected in 93.8% of the patients. Denervation supersensitivity was observed in all patients. Light-near dissociation was present in 88.2% and over 90% of the patients had decreased DTR in the biceps, triceps, knee and ankle jerk. Conclusions: This cross-sectional study showed Adie’s tonic pupil tended to become miotic and recover accommodation power over the years.

급성 양측성 중심 망막 동맥 폐쇄를 동반한 시신경 척수염 1례

이신혜(Shin Hye Lee),임진아(Gina Lim),염미선(Mi-Sun Yum),임현택(Hyun Taek Lim),고태성(Tae-Sung Ko) 대한소아신경학회 2008 대한소아신경학회지 Vol.16 No.2

시신경 척수염은 일측성 또는 양측성 시신경염과 횡단 척수염이 동시에 또는 시간 간격을 두고 발생하는 원인미상의 탈수초성 질환이다. 소아에서는 매우 드물며, 다른 여러 탈수초성 질환들과 임상 양상만으로는 감별이 어려운 경우가 많다. 저자들은 양측 망막 동맥 폐쇄를 동반한 시신경염 소견과 지연되어 나타난 하지마비를 보인 8세 여아에서 뇌척수 자기공명영상, 뇌척수액 검사, 혈청 NMO-IgG 검사를 통해 시신경 척수염을 진단하고 유지요법으로 rituximab을 사용하여 이를 보고하는 바이다. Neuromyelitis optica(NMO) or Devic's syndrome is an uncommon clinical syndrome associating with unilateral or bilateral optic neuritis and transverse myelitis. It is rarely found in children and usually reported in adults with serious neurologic manifestations. We report a case of an 8-year-old girl with neuromyelitis optica whose first clinical manifestation was acute visual loss of both eyes. Initially the patient had been diagnosed with central retinal artery occlusion and optic neuritis by ophthalmologic examination, a brain magnetic resonance imaging, and cerebrospinal fluid findings. She was treated with intravenous methylprednisolone pulse therapy and heparinization. Then the treatments were replaced with oral prednisolone and warfarin. At the fifteenth day after the start of oral prednisolone tapering, she visited our emergency room for voiding difficulty and paresthesia on both legs. A spinal magnetic resonance imaging revealed increased signal intensity in T2-weighted images from cervical to lumbar level, and neuromyelitis optica- IgG(NMO-IgG) was detected in the patient's serum. After we diagnosed her as having neuromyelitis optica, intravenous methylprednisolone and nine courses of daily plasmapheresis were tried. However, the patient still had visual loss, pain, and sensory loss below the sixth thoracic dermatome, and we tried maintenance therapy with intravenous rituximab. We report our case with reviews of the related literatures.

거대고리 화합물을 이용한 금속 이온의 흡착 및 분리에 관한 연구

임현택,박성규,김준태 한국공업화학회 1998 응용화학 Vol.2 No.1

Resins with 1-aza-15-crown-5 macrocyclic ligand attached to chloromethylated rene-1,4-divinylbenzene by substitution reaction were prepared and the effect of, metal concentration and cross-linkage of the matrix on the adsorption for UO₂²^+, ²^+ and Sm³^+ was investigated. The metal ion was not adsorbed on the resins pH ○ge below 3 and above pH 4, fast adsorption behavior was showed. The resin ectivity determined in ethanol matrix was in increasing order UO₂²+ $gt; Zn²^+ $gt; Sm³^+. addition, these metal ion could be separated on the column packed with 1% ○sslinked resin by pH 2.5 HNO₃ as an eluent.

1 - Aza 0 15 - Crown - 5 합성수지를 이용한 희토류 금속 이온들의 특성에 관한 연구

임현택,박성규,김준태 한국공업화학회 1999 응용화학 Vol.3 No.1

The new ion exchange resin was synthesized from chloromethylated styrene-1,4-divinylbenzene with crown macrocyclic ligand by substitution reaction. The resin was prepared and the effect of pH, time, dielectric constant of solvent and cross-linked of the matrix on the adsorption for UO₂²^+ ,Cu²^+ and Ho³^+ was investigated. The metal ion was not adsorbed on the resins pH range below 3 and above pH 4 fast adsorption behavior was showed. The resin selectivity determined in ethanol matrix was in increasing order UO₂²^+$gt; Cu²^+$gt;Ho³^+. In addition, these metal ion was separated on the column packed with 1% crosslinked resin as an eluent.

Crown 합성수지를 이용한 금속 이온들의 특성에 관한 연구

박성규,김준태,임현택 한국공업화학회 1998 응용화학 Vol.2 No.2

The new ion exchange resin was synthesized from chloromethylated styrene-l,4-divinylbenzene with crown macrocyclic ligand by substitution reaction. The resin was prepared and the effect of pH, time, dielectric constant of solvent and cross-linked of the matrix on the adsorption UO₂²^+,CO²^+ anD Nd³^+ was investigated. The metal ion was not adsorbed on the resins pH range below 3 and above pH 4 fast adsorption behavior was showed. The resin selectivity determined in ethanol matrix was in increasing order UO₂²^+$gt; Co²^+ $gt; Nd³^+. In addition, these metal ion was separated on the column packed with 1% crosslinked resin as an eluent.