서울시 저영향개발(LID) 시범 시설에 대한 편익 특성 연구

이승원(Seung Won Lee),김이호(Reeho Kim) 대한환경공학회 2016 대한환경공학회지 Vol.38 No.6

서울시는 ‘건강한 물순환 도시’ 조성을 비전으로 선포하고 도시 물환경 악화에 따른 문제를 해결하기 위한 노력을 기울이고 있다. 이를 위해 서울시는 빗물의 침투 및 저류 기능 등을 이용하는 저영향개발(LID) 시설의 설치를 확산시키기 위한 정책 및 제도 개선을 추진하고 있다. 이러한 저영향개발 시설은 공공이 선도하는 물순환 도시 조성과 이를 위한 빗물의 표면유출 억제와 물이용 효율화를 목적으로 하고 있다. 또 악화된 물순환과 물환경을 회복하기 위해 다양한 저영향개발 시설이 설치 및 운영되고 있다. 그러나 이에 대한 체계적인 경제성 평가를 위한 편익 분석 방안은 미흡한 실정이다. 따라서 본 연구에서는 저영향개발 시설의 경제적․환경적․사회적 편익을 다각적으로 분석하기 위해 저영향개발 시설별로 물․에너지․대기질 개선․기후변화 대응의 4개 카테고리별로 편익 분석항목을 선정하였다. 이러한 카테고리별 분류에 따른 직간접인 편익효과의 정량화 및 가치 평가 결과, 각 시설별로 연간 1,191원의 단위면적 당 편익이 발생하는 것으로 산정되었다. 분석 항목별 편익 분포 특성은 시설의 특성에 따라 다양한 것으로 나타났다(물: 30~90%, 에너지: 4~44%, 대기질 개선: <1~2%, 기후변화 대응: 5~22%). TBL 분석 결과, 시설별로 경제적 편익의 비중이 가장 큰 것으로 나타났으며(75~90%), 환경적 편익(<1~2%) 및 사회적 편익(9~24%)이 산정되었다. 향후, 현재의 개별 저영향개발 시설에 대한 편익 분석 방안을 기반으로 단지 및 지구 단위의 물순환 연계 시스템이 적용될 경우, 도시 열섬 현상 및 홍수 재해 예방 등 저영향개발 시설 운영의 편익에 대한 시너지 효과 등을 평가할 수 있을 것으로 기대된다. Seoul metropolitan has established a vision as ‘Healthy water-cycle city’ to resolve urban water-environmental deterioration. And it established administrative structure to expand Low Impact Development (LID) facilities to recover aggravated water-cycle and water-environment. Therefore, various LID facilities are constructed and operated, however, benefit analytic plans for systematic valuation are insufficient. In this study, to analyze economic, environmental and social benefits of LID facilities, contents for benefit analysis were selected and categorized as water, energy, air quality and climate changes. As a result of quantification and valuation to the beneficial effects, LID facilities showed the total benefit as 1,191~3,292 won/yr. Characteristics of benefit distribution by analysis contents were various reflecting functional characteristics of each LID facility (Water: 30~90%, Energy: 4~44%, Air quality: <1~2%, Climate change: 5~22%). As a result of Triple Bottom Line analysis, economic benefit showed the greatest portion as 75~90%. As further studies, suggested benefit assessment plans for each LID facility should be applied to inter-connected LID systems on complex-scaled area, and synergy effects by various LID systems would be evaluated such as prevention of heat island and flood disasters.

선별이적처리를 통한 운영 중인 매립지의 재이용 방안

이승원 ( Seung-won Lee ) 한국환경기술학회 2021 한국환경기술학회지 Vol.22 No.3

In this study, the amount of landfill by on-site excavation landfill waste was calculated, and. the density was corrected to calculate the reuse capacity of the landfill. The amount of landfill waste that has been brought in is expected to be 6,647,056 ton. In addition the reuse and waste produced by the sorting transfer method was plastic, and throughput of 910,312 ton. The density-corrected reclaimed landfill capacity was estimated to be 2,276,000 m³. The landfill amount calculated by excavation was 841,201 ton, and the reclaimable landfill capacity was predicted to be 2,103,000 m³. Assuming that 930,312 ton of plastic are sorted and 30 % of 273,094 ton are processed in relation to the SRF power facility, that will produce 0.96 kW/ton(SRF standard) of electricity at 40,000 won/kW and profit of 17,477,990,400 won is expected. Currently, there are problems in securing the site of a new landfill and stabilizing the natural landfill, so if is useful for the early stabilization and efficient operation of the landfill that is being operated by introducing the selective transfer method.

건조방법에 따른 하수슬러지 건조속도 비교 및 경제성 평가

박성훈 ( Seong-hun Park ),김한석 ( Han-seok Kim ),이승원 ( Seung-won Lee ) 한국환경기술학회 2021 한국환경기술학회지 Vol.22 No.3

In this study investigated the effect of the chemical injection ratio on the drying rate of sewage sludge. Then the economic efficiency was evaluated by comparing the results of the NIR(near infrared ray) and microwave drying rate test. The near infrared ray device showed drying speed of 31.9 %, 28.1 %, and 27.1 % at polymer dose ratio of 8 %, 10 %, and 12 %, respectively. Compared to 8 % polymer dose ratio, polymer dose ratio of 10 % and 12 % showed differences of 8.0 % and 13.6 % respectively, suggesting that drying efficiency decreased as polymer dose ratio increased. The microwave device showed drying speed of 26.2 %, 24.3 %, 21.3 % at polymer dose ratio of 8 %, 10 %, and 12 %, respectively. Compared to 8 % polymer dose ratio, polymer dose ratio of 10 % and 12 % showed differences of 5.2 % and 13.4 % respectively, suggesting that drying efficiency decreased as polymer dose ratio increased. Drying evaluation estimated the treatment cost of near infrared ray device at optimal dose ratio(6 %) was 35,591 won/ton while that of actual dose ratio(8 %) was 38,928 won/ton. Drying evaluation estimated treatment cost of microwave device at optimal polymer dose ratio(6 %) and at 8 % to be 16,683 won/ton and 18,352 won/ton, respectively.

기타 두경부 병변에서의 보툴리눔 독소의 이용

이승원,Lee, Seung Won 대한후두음성언어의학회 2012 대한후두음성언어의학회지 Vol.23 No.2

The usages of botulinum toxin were most commonly for the treatment of spasmodic dysphonia in the otolaryngology field. It has been not only widely used in otolaryngology-Head Neck surgery but also plastic surgery, ophthalmology, rehabilitation medicine, and orthopedics. Now botulinum toxin is used such as blepharospasm (excessive blinking), strabismus, cosmetic, muscle spasms, upper motor neuron syndrome, severe primary axillary hyperhidrosis (excessive sweating), cervical dystonia (spasmodic torticollis), chronic migraine, bruxism, and achalasia. The indication of this drug still gradually expanding with the times. In this articles, the author will demontrate how to use the botulinum toxin for treating cricopharyngeal spasm, arytenoid dislocation, sialocele, Frey syndrome, contact granuloma, bilateral vocal fold paralysis, and mutaional falsetto instead of conventional surgical treatment.

기타 기능성 발성장애 및 신경성 발성장애

이승원,Lee, Seung Won 대한후두음성언어의학회 2014 대한후두음성언어의학회지 Vol.25 No.2

Functional dysphonia is a specific voice disorder refers to dysphonia without abnormal anatomical vocal fold findings at larynx. The proportions of this disorder are estimated up to 40% of dysphonia patients at ENT clinics. In this article, we will discuss about other functional dysphonia and neurological dysphonia except for muslce tension dysphonia and spasmodic dysphonia. For details, will describe about phonatory charateristics and treatment options about paradoxical vocal fold motion disorder, mutational dysphonia, essential vocal tremor, conversion dysphonia, and vocal tremor related with parkinson's disease.

손해보험 분쟁조정사례 - 고지의무 위반에 따른 계약해지 전 암진단 시 보험자의 보상책임 범위

이승원,Lee, Seung-Won 한국화재보험협회 2012 防災와 保險 Vol.146 No.-

망막정맥폐쇄와 당뇨망막병증에서 황반부종 치료를 위한 유리체내 베바시주맙 주입술의 효과

이승원,김무상,김응석,곽형우,유승영,Seung Won Lee,MD,Moo Sang Kim,MD,Eung Suk Kim,MD,Hyung Woo Kwak,MD,Seung Young Yu,MD 대한안과학회 2009 대한안과학회지 Vol.50 No.2

Purpose: To evaluate the long-term results of intravitreal bevacizumab injection for macular edema (ME) due to retinal vein obstruction (RVO) and diabetic retinopathy (DR). Methods: The objects of study were patients with decreased visual acuity due to ME with RVO and DR for whom intravitreal injections of 1.25 mg (0.05 ml) bevacizumab were repeated three times with an interval of six weeks and who were available for a follow-up period of more than 12 months. The patients underwent additional bevacizumab injections if ME increased as assessed by optical coherence tomography (OCT). Best-corrected visual acuity (BCVA) and central macular thickness (CMT) were measured at baseline and follow-up visits. Results: There were 16 patients with RVO and 18 patients with DR. In the RVO group, the mean length of follow-up was 12.4±1.1 months, the mean baseline BCVA was 0.75±0.32 and the final BCVA was 0.42±0.25, a difference that was statistically significant (p<0.05). The mean CMT at baseline was 588.5±301.0 μm and this decreased to a mean of 191.8±112.0 μm at the end of the follow-up period (p<0.05). In the DR group, the mean length of follow-up was 15.4±3.2 months, the mean baseline BCVA was 0.63±0.33 and the final BCVA was 0.61±0.37, a difference that was not statistically significant (p>0.05). The mean CMT at baseline was 462.0±195.0 μm and decreased to a mean of 282.2±177.3 μm at the end of the follow-up period (p<0.05). Conclusions: In RVO and DR, three injections of intravitreal bevacizumab with an interval of six weeks and additional injections as indicated were effective in reducing ME and showed especially good results in improvement of visual acuity for ME due to RVO.

복원력이 좋은 정어리 단백질 농축물의 가공 -1. 정어리 단백질 농축물의 가공 및 제품의 품질 특성-

이승원,주동식,김진수,김풍호,이응호,LEE Seung-Won,JOO Dong-Sik,KIM Jin-Soo,KIM Poong-Ho,LEE Eung-Ho 한국수산과학회 1991 한국수산과학회지 Vol.24 No.2

This study was carried out with sardine to develope a new type of fish protein concentrate. Chopped sardine meat was thermally treated in two different ways, autoclaved at $121^{\circ}C$ for 1 min and boiled at $95^{\circ}C$ for 5 min. The heat treated meat was pressed, controlled to PH 7.8 with $3\%$ (w/v) of $NaHCO_3$ and hot-air dried(at $40^{\circ}C$). The dried meat was powdered (50mesh), air and vacuum packed in laminated film bag(PET/AL. foil/CCP) and stored at room temperature for 60 days. The results of product quality analysis are as follows : 1. Proximate contents of moisture, crude lipid and protein of the autoclaved and boiled product were in the range of $10.0{\~}10.2\%,\;9.0{\~}9.1\%$ and $73.8{\~}74.4\%$, respectively. Yields of the both products were $40\%$ and $32.5\%$. 2. Values of emulsion activity, emulsion stability and foam expansion of the autoclaved product were $48.7\%$, $44.1\%\;and\;44.0\%$, respectively. These values were higher than those of boiled product. 3. Water holding capacity and digestibility of the both products were in the range of $5.0{\~}5.3\%$ and $78.0{\~}78.2\%$, respectively. 정어리를 비교적 간단한 방법으로 식품가공용 중간소재로 이용하기 위한 일련의 연구로서 정어리육을 채취하여 autoclave$(121^{\circ}C,\;15Lbs)$에서 처리한 다음 압착 및 알칼리용액을 분무시킨 후 이를 건조 및 분쇄하여 정어리 어육 농축 단백질을 제조하였다. 고온가압처리 시간은 $121^{\circ}C$에서 1분, pH는 7.8로 하여 제조하는 것이 가장 적당하였다. 이렇게 제조된 제품의 단백질함량은 $74.4\%$, 지방함량은$9.1\%$였다. 또한 수율은 $40.0\%$로 자숙처리한 제품이나 에탄올 처리한 제품보다 높았고, 유화성 및 보수력은 각각 $48.7\%,\;50.0\%$ 였다 포말성을 $44\%$로 낮았으며, 포말안정성도 $1{\~}2$시간으로 낮았다. 소화율은 $78.2\%$로 자숙처리제품(B) 및 에탄올처리제품(C)와 큰 차이가 없었으나, 소화된 성분의 관능검사 결과 고온가압처리제품(A)가 감칠맛이 가장 강한 것으로 나타났다.

인용문헌 분석을 통한 정보 이용 행태 연구 - 화학분야 박사학위논문을 중심으로 -

이승원,Lee, Seung-Won 한국과학기술정보연구원 과학기술정보센터 2008 Journal of Information Science Theory and Practice Vol.39 No.2

본 연구는 박사학위논문연구 수행과정에서 연구자들이 어떤 형태의 문헌을 가장 많이 이용하고 있으며, 가장 빈번하게 인용된 학술잡지는 어떤 형태인가, 인용문헌의 연령 즉 학술잡지의 노화율을 살펴보는 것이다. 이를 확인하기 위해서 서울시 'K'대학교의 화학분야 박사학위논문의 참고문헌을 계량적으로 분석하였다. 서울에 소재한 'K'대학교가 2000년부터 2008년까지 9년간에 걸쳐서 수여한 42개의 박사학위논문을 대상으로 분석이 이루어졌다. 총 3,258개의 인용문헌들의 분석을 통해서 얻어진 결과들을 살펴보면, 가장 많이 이용된 문헌이 학술저널이며, 총 인용문헌 중에 91%에 달한다. 이용자 정보요구의 50%를 충족시키는데 필요한 학술잡지 수는 27종이였으며, 인용문헌의 50%에 해당되는 연령은 7.6년이다. 이 박사학위논문의 인용문헌분석을 통해서 얻은 결과로 특정이용집단의 정보 이용 행태를 파악하여 도서관의 장서관리를 위한 도구로 이용될 수 있을 것이다. This study was carried out on the citations within the chemistry field Ph.D. dissertations to ascertain what types of documents are the most frequently used in the research process, the most frequently consulted journals and obsolescence rate of the journals. The analysis covered 42 doctoral theses presented at 'K' university in Seoul from 2000 to 2008. The results obtained from the 3,258 citations revealed that the most frequently used documents were Academic Journal, which accounted for 91 percent of the total; 27 journals met 50 percent of the information needs; and the age of 50 percent of the citations was no older than 9 years. Finally, the results can be used as a tool for the collection management of the library. and Researcher with the chemistry field Ph.D. dissertation.

실시간 위치 기반 서비스를 위한 확장 SLDS 설계 및 구현

이승원,강홍구,홍동숙,한기준,Lee, Seung-Won,Kang, Hong-Koo,Hong, Dong-Suk,Han, Ki-Joon 한국공간정보학회 2005 한국공간정보시스템학회 논문지 Vol.7 No.2

최근 이동 컴퓨팅 기술과 무선 측위 기술이 급속도로 발전하고 무선 인터넷이 보편화됨에 따라 이동체의 위치 정보를 활용하는 위치 기반 서비스(LBS: Location Based Service)가 다양한 분야에서 제공되고 있다. 위치 기반 서비스를 제공하기 위해서는 이동체의 위치 정보를 주기적으로 저장하는 위치 데이타 서버가 필요하다. 기존에는 이동체의 위치 데이타를 저장하기 위해서 GIS 서버를 사용해 왔다. 하지만 GIS 서버는 정적 데이타를 기반으로 설계되었기 때문에 이동체의 위치 데이타를 저장하는데 적합하지 않다. 따라서, 본 논문에서는 이동체의 위치 데이타를 관리하기 위해 제안된 클러스터 기반 분산 컴퓨팅 구조를 갖는 GALIS(Gracefully Aging Location Information System) 아키텍처의 서브 시스템인 SLDS(Short-term Location Data Subsystem)를 확장하여 실시간 위치 기반 서비스를 위한 확장 SLDS를 설계 및 구현하였다. 확장 SLDS는 TMO(Time-triggered Message-triggered Object) 프로그래밍 기법을 이용하여 위치 데이타 처리의 실시간성을 보장하며, 이동체 데이타를 다수의 노드에 적절히 분산시킴으로써 대용량 위치 데이타를 효율적으로 관리할 수 있다. 그리고, 메인메모리에서 위치 데이타를 관리하기 때문에 검색 및 갱신 오버헤드가 적다. 또한, 실험을 통하여 확장 SLDS는 기존에 제시된 SLDS 보다 더 효율적인 저장과 부하 분산을 수행한다는 것을 확인하였다. Recently, with the rapid development of mobile computing, wireless positioning technologies, and the generalization of wireless internet, LBS (Location Based Service) which utilizes location information of moving objects is serving in many fields. In order to serve LBS efficiently, the location data server that periodically stores location data of moving objects is required. Formerly, GIS servers have been used to store location data of moving objects. However, GIS servers are not suitable to store location data of moving objects because it was designed to store static data. Therefore, in this paper, we designed and implemented an extended SLDS(Short-term Location Data Subsystem) for real-time Location Based Services. The extended SLDS is extended from the SLDS which is a subsystem of the GALIS(Gracefully Aging Location Information System) architecture that was proposed as a cluster-based distributed computing system architecture for managing location data of moving objects. The extended SLDS guarantees real-time service capabilities using the TMO(Time-triggered Message-triggered Object) programming scheme and efficiently manages large volume of location data through distributing moving object data over multiple nodes. The extended SLDS also has a little search and update overhead because of managing location data in main memory. In addition, we proved that the extended SLDS stores location data and performs load distribution more efficiently than the original SLDS through the performance evaluation.