• 대한원격탐사학회지
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• 제36권5_2호
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• pp.949-959
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• 2020

본 논문에서는 CAS500-1/2를 이용한 산출물 생성에 관련한 선행연구로 KOMPSAT-3A 스트립영상을 사용한 비접근 지역의 도엽별 DSM을 생성하는 방법을 제안한다. 제안 기법은 1:5000 도엽정보의 입력을 통한 영역 설정을 통해 도엽별로 산출물이 나올 수 있도록 설계됐으며, 강인한 스테레오 영상정합 기법인 MDR을 적용하여 스테레오 페어에서도 최적의 DSM이 나오도록 설정했다. 스트립 영상이 분할된 여러 장의 단위 영상으로 들어오는 것을 고려하여 하나의 도엽에 여러 쌍의 영상 페어를 처리하여 통합하는 방식으로 DSM의 생성을 시도했으며, 처리결과 도엽 간의 접합부분에서 이격 발생을 최소화한 DSM의 생성이 가능함을 확인할 수 있었다. 최종적으로 GCP와의 비교를 통한 정확도 검증결과 5 m 이내의 정확도가 나타나는 것을 확인할 수 있었다.

• Archives of Plastic Surgery
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• 제36권1호
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• pp.96-100
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• 2009

Purpose: Angiosarcoma of the scalp is unusual vascular tumor originating from endothelial cell. Angiosarcoma is an aggressive tumor with high propensity for both local recurrence and distant metastasis. We report 2 cases of angiosarcoma having poor prognosis recently. Methods: Case 1 was a 67 - year - old male patient. He visited the hospital with a $3{\times}5cm$ sized discolored mass in forehead. It began at one month ago from coming to the hospital. Case 2 was a 64 - year - old male patient. He visited for our hospital to remove a $4{\times}5cm$ sized scalp mass. He had a pruritis on scalp from 9 months ago before coming to the hospital. Despite of the conservative treatments, the wound was not healed and advanced necrotic lesion with hemorrhage. Results: Case 1 diagnosed as an angiosarcoma. He underwent a radical operation 5 times. But the tumor expanded multiple area in dura & frontal area of the brain. The patient rejected the treatment any more. And he died one month later. Case 2 diagnosed as an angiosarcoma and metastased to skull in MRI. He got a radical resection including cranium. Three months later, it recurred to ipsilateral Sternocleidomastoideus muscle. He got a additional operation & started radiotherapy. And now he is receiving chemotherapy, but the recurred lesion is expanding. Conclusion: Angiosarcoma is a highly malignant tumor. Especially it arises in vascularized area, it easily metastases. So it is the best to treat angiosarcoma with surgery included wide margins. Despite of the lesion is small, we remember that angiosarcoma is a tumor that consider to metastases.

• 한국지하수토양환경학회:학술대회논문집
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• 한국지하수토양환경학회 2006년도 총회 및 춘계학술발표회
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• pp.398-401
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• 2006

Two landfills of this study containing municipal wastes without any bottom liner and leachate treatment system have different landfill age, waste volume and most importantly different hydrogeologic settings. The one (Cheonan) is situated in an open flat area while the other (Wonju) is located in a valley. In the interior of the landfills, typical anaerobic conditions revealed by low DO and ${NO_3}^-$ concentrations, negative ORP values, high $NH_3$, alkalinity and $Cl^-$ concentrations were observed. Generally higher levels of contaminants were detected in the dry season while those were greatly lowered in the wet season. Significantly large decrease of Cl concentration in the wet season indicates that the dilution or mixing is one of dominant attenuation mechanisms of leachate. But detailed variation behaviors in the two landfills are largely different and they were most dependent on permeability of surface and subsurface layers. The intermediately permeable surface of 1.he landfills receives part of direct rainfall infiltration but most rainwater is lost to fast runoff. The practically impermeable surface of clayey silt (paddy field) at immediately adjacent to the Cheonan landfill boundary prevented direct rainwater infiltration and hence redox condition of the groundwaters were largely affected by that of the upper landfill and the less permeable materials beneath the paddy fields prohibited dispersion of the landfill leachate into downgradient area. In the Wonju landfill, there exist three different permeability divisions, the landfill region, the sandy open field and the paddy field. Roles of the landfill and paddy regions are very similar to those at the Cheonan. The very permeable sandy field receiving a large amount of rainwater infiltration plays a key role in controlling redox condition of the downgradient area and contaminant migration.

• 한국물환경학회지
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• 제20권5호
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• pp.415-421
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• 2004

Litter wastes on highway runoff are gradually being considered one of the major pollutants of concern in protecting the integrity of receiving waters for beneficial use. The California State Water Resources Control Board has identified in their 303(d) list at least 36 water bodies where trash or litter is considered a pollutant of concern. The first TMDL adopted by the Region 4 (Los Angeles area) of the California State Water Quality Control Board was for trash in the Los Angeles River. The first flush characteristic study was developed to obtain first flush water quality and litter data from representative stormwater runoff from standard highway drainage outfalls in the Los Angeles area. Total captured gross pollutants in stormwater runoff were monitored at six Southern California highway sites over two years. The gross pollutants were 90% vegetation and 10% litter. Approximately 50% of the litter was composed of biodegradable materials. The event mean concentrations show an increasing trend with antecedent dry days and a decreasing trend with total runoff volume or total rainfall. Event mean concentrations were ranged 0.0021 to 0.259g/L for wet gross pollutants and 0.0001 to 0.027g/L for wet litters. The first flush phenomenon was evaluated and the impacts of various parameters such as rainfall intensity, drainage area, peak flow rate, and antecedent dry period on litter volume and loading rates were evaluated. First flush phenomenon was generally observed for litter concentrations, but was not apparent with litter mass loading rates. Litter volume and loading rates appear to be directly related to peak storm intensity, antecedent dry days and total flow volume.

• Journal of Acupuncture Research
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• 제32권2호
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• pp.169-185
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• 2015

Objectives : The purpose of this study is to find the effects of Sa-am liver tonifying and sedating acupuncture on radial pulse. Methods : Sixty healthy people were divided into a liver tonifying acupuncture(LTA) group, liver sedating acupuncture(LSA) group, and control group. The LTA group and LSA group received acupuncture for 20 minutes with a supine position. The Control group took a rest without receiving acupuncture. Radial pulse was measured by three dimensional pulse imaging system(DMP-3000) at four different time points (before, right after, 30 minutes after, and 60 minutes after acupuncture). We compared the three groups and figure out determined the parameters which significantly changed after acupuncture treatment. Results : 1. Pulse period, T1/T, T4/T, (T-T4)/T, T4/(T-T4), T5/T significantly changed after acupuncture. 2. H4, pulse area, systolic pulse area, diastolic pulse area, radial augmentation index(RAI), and pulse power volume / min significantly changed after acupuncture. 3. Frequency of Fourier components, ratio of frequencies of Fourier components, magnitude of Fourier components, and ratio of magnitudes of Fourier components significantly changed after acupuncture. Conclusions : LTA and LSA have an effect on the radial pulse parameters. Further studies on radial pulse change using Sa-Am acupuncture are needed.

• 한국기후변화학회지
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• 제7권2호
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• pp.193-203
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• 2016

The importance of forecasting agricultural production is receiving attention while climate change is accelerating. This study suggested three types of crop yield forecasting model for major vegetable crops by using downscaled meteorological information of main production area on farmland level, which identified as limitation from previous studies. First, this study conducted correlation analysis with seven types of farm level downscaled meteorological informations and reported crop yield of main production area. After, we selected three types of meteorological factors which showed the highest relation with each crop species and regions. Parameters were deducted from meterological factor with high correlation but crop species number was neglected. After, crop yield of each crops was estimated by using the three suggested types of models. Chinese cabbage showed high accuracy in overall, while the accuracy of daikon and onion was quiet revised by neglecting the outlier. Chili and garlic showed differences by region, but Kyungbuk chili and Chungnam, Kyungsang garlic appeared significant accuracy. We also selected key meteorological factor of each crops which has the highest relation with crop yield. If the factor had significant relation with the quantity, it explains better about the variations of key meteorological factor. This study will contribute to establishing the methodology of future studies by estimating the crop yield of different species by using farmland meterological information and relatively simplify multiple linear regression models.

• 대한통합의학회지
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• 제9권1호
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• pp.69-90
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• 2021

Purpose : This study explores unmet medical services within a region for patients admitted to a single medical institution in one region and was to analyze the importance and satisfaction of hospital selection attributes. Through this, we tried to solve the unmet medical needs of patients and provide useful basic data in terms of hospital management in the region. Methods : It were collected to a total of 250 questionnaires for patients admitted to the regional integrative medical hospital. However, 232 samples were used for the final analysis, excluding 18 copies not reported in good faith. For the analysis, first, demographic frequency analysis of inpatients and inpatients was performed, and second, characteristics of patients, including frequent disease receiving treatment, were analyzed. Next, descriptive statistics analysis was conducted on unmet medical service intentions. In terms of hospital selection attribute, the items of continuity maintenance (I quadrant), priority visibility (II quadrant), low priority (III quadrant), and excessive effort (IV quadrant) were derived using the IPA (importance-performance analysis) matrix technique. Results : The derived results were classified by item and area. In the priority administration area, it was the reputation and recognition of medical institutions and the service area of medical institutions. In the case of items, there were 6 items including the importance of surgery and medical expenses, and diet at hospitalization. 1) Conclusion : Thus a result of this study, resources are efficiently allocated to priority correction areas with high importance but low satisfaction and circulatory medical treatment is performed in the departments required by patients who use medical care and, various methods, such as preparing a policy to support medical expenses, should be sought.

• Journal of East Asia Management
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• 제4권1호
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• pp.1-22
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• 2023

This study conducted a big data analysis study through text mining and semantic network analysis to explore the perception of defense reform 2.0. The collected data were analyzed with the top 70 keywords as the appropriate range for network visualization. Through word frequency analysis, connection centrality analysis, and an N-gram analysis, we identified issues that received much attention such as troop reduction, shortening of military service period, dismantling of the border area unit, and returning wartime operational control. In particular, the results of clustering words through CONCOR analysis showed that there was a great interest in pursuing the technical group, concerns about military capacity reduction, and reorganization of manpower structure. The results of the analysis through text mining techniques are as follows. First, it was found that there was a lack of awareness about measures to reinforce the reduced troops while receiving much attention to the reduction of troops in Defense Reform 2.0. Second, it was found that it is necessary to actively communicate with the local community due to the deconstruction and movement of the border area units, such as the decrease of the population of the region and the collapse of the local commercial area. Third, it was judged that it is necessary to show substantial results through the promotion of barracks culture and the defense industry, which showed that there was less interest than military structure and defense operation from the people and the introduction of active policies. Through this study, we analyzed the public's interest in defense reform 2.0, which is a representative defense policy, and suggested a plan to draw support for national policy.

• 디지털융복합연구
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• 제18권10호
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• pp.181-194
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• 2020

유통시장의 변화에 따라 농·수·축산물의 보관과 유통 그리고 가공식품 및 신선식품의 보관과 운송에 대한 이슈가 급부상하고 있으며, 이에 따라 콜드체인이 물류 서비스의 한축으로 자연스럽게 주목을 받고 있다. 본 연구는 최근 들어 활기를 띠고 있는 냉동냉장 식품 등 콜드체인 유통과 관련하여 관심을 끌고 있는 수도권 지역 콜드체인 클러스터 구축에 대한 입지 경쟁력 평가를 목적으로 한다. 이를 위해 본 연구는 전문가의 지식을 효율적으로 추출하여 계량화할 수 있는 CFPR(Consistent Fuzzy Preference Relations) 분석기법을 활용하여 수도권 콜드체인 클러스터 후보지에 대한 경쟁력을 평가하였다. 연구 결과, 입지 경쟁력은 인천신항 배후부지, 경기 남부권(용인), 경기 서부권(김포 물류단지), 평택오성물류단지 순으로 우수한 것으로 나타났다. 특히 본 연구는 냉동·냉장 물류창고 운영 전문가의 지식을 추출하여, 수도권 콜드체인 클러스터 후보지에 대한 세부적인 경쟁력 평가를 실시하고, 최적의 클러스터 후보지를 제시하였다는 점에서 기존 연구들과 차별성을 가진다. 향후 연구에서는 설문 대상을 신선식품 물류센터의 소유권을 확보하기 위한 구매 및 구축 결정권을 가진 기업경영자, 대기업군, 공공기업 군 등으로 구분하여 조사할 필요가 있다.

• 한국해양학회지:바다
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• 제5권2호
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• pp.169-176
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• 2000

본 조사는 목포 인근 연안 저서동물의 종 조성과 군집의 시 ${\cdot}$ 공간적 분포를 알아보기 위해 실시하였다. 조사기간 중 총 238종, 663 ind./$m^{2}$의 생물이 채집되었으며 , 다모류가 88종, 389 ind./$m^{2}$로 가장 우점하는 동물군으로 나타났다. 영산강 하구역과 목포항 부근에서는 니질퇴적상과 높은 유기물함량을 나타냈으며, 표층 염분도와 저층 용존산소 등은 계절에 따라 큰 차이를 보였다. 그러나, 외해역의 경우에는 환경변화가 거의 나타나지 않았다. 집괴분석에 의한 군집구조는 4개 지역으로 나누어 졌다. 정점 1과 9로 구성된 2개 그룹은 계절적인 종조성의 차이에 의해, 다른 두 개 그룹은 지역적인 차이에 의해 내만역 (영산강 하구역과 금호방조제 부근)과 연안해역으로 나누어졌다. 이들 지역은 종 수와 생물 다양도에서는 유사하였으나 종조성에서는 큰 차이를 나타냈다. 우점종의 경우 내만역은 Tharyx sp. Poecilochaertus johnsoni, Heteromastus filiformis 등 기회종이 다수 포함된 반면, 연안해역은 Ruditapes philippinarum, Corophium sinense 등으로 구성되었다. 환경변화와 종 조성에 따른 연구 결과, 내만역은 외해역에 비해 담수방류, 유기물 증가 등 저층에 환경교란이 일어나 계절적으로 불안정한 생태계를 나타냈다. 따라서 연안개발 등이 시 ${\cdot}$ 공간적으로 목포 주변 해역 저서동물군집에 영향을 미치는 것으로 볼 수 있다.