• 응용통계연구
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• 제26권6호
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• pp.959-975
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• 2013

Friendly (1992)의 SAS macro faces 프로그램은 다변량 시각화 표현법 중 하나인 체르노프 얼굴 분석을 위한 프로그램이다. 본 연구에서는 faces에서 사용된 18개 얼굴 특징 변수를 살펴보고 현 시대의 흐름에 맞는 좋은 얼굴의 정의에 따라 수정된 프로그램을 제시하였다. 또한 은행의 안정성, 소비자 만족도, 건전성, 수익성을 나타내는 11개 은행경제지표에 기초한 체르노프 얼굴분석을 통하여 국내 15개 은행에 대해 소비자 입장에서 좋은 은행 평가를 수행하였다.

• 반도체디스플레이기술학회지
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• 제9권4호
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• pp.57-61
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• 2010

The wavelet transform was adopted as the transform for JPEG2000. However, wavelet has weakness about smoothness along the contours and limited directional information. So we use to other transform, called contourlet transform in compression. Objective quality assessment methods currently used Peak signal to noise Ratio(PSNR). But that is not very well matched to perceived visual quality. So new image quality assessment is required. In this paper, we propose a new method for image compression based on the contourlet transform, which has been recently introduced. In addition we evaluated compression image quality using PSNR and SSIM. Finally contourlet transform has a good result about images with smooth contours and SSIM is good method for image evaluation compared to PSNR.

• 상하수도학회지
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• 제17권4호
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• pp.487-494
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• 2003

In this research, water qualities of river water and bank-filtrate were compared for six months including winter season. The location studied was Galjon area, the downstream of the Nakdong river. The well for bank-filtrate was installed 40 m apart from riverside. Main analytic results of bank-filtrate and river water were summarized as followings; the average concentrations in bank-filtrate were turbidity 0.8NTU, TN 0.4mg/l, $BOD_5$, 0.1mg/l, $KMnO_4$ consumption 1.6mg/l, heterotrophic bacteria 350cfu/ml, Fe 0.5mg/l, Mn 0.99mg/l while the average concentrations in river water were turbidity 6.1NTU, TN 3.9mg/l, $BOD_5$, 3.6mg/l, $KMnO_4$ consumption 11mg/l, heterotrophic bacteria 1,640cfu/ml, Fe 0.28mg/l, Mn 0.04mg/l. Water quality of bank-filtrate was mostly shown a good results than it of river water excepting Fe and Mn. In even basic constituents such as water temperature and pH, bank-filtrate was very settled while river water was extraordinary changable and high. In case of nitrogen, especially, total nitrogen of river water was 3.9mg/l while it of bank-filtrate was 0.4mg/l and its reduction was very high. The reason is that $NH^+_4-N$ among total nitrogen in the river water is nitrified and then denitrified in soil layer when it is pumped up as bank-filtrate. But Fe and Mn caused by the characteristics of soil was very high in bank-filtrate while Mn in river water was particularly very low and settled. As the distance between riverside and well was longer, concentration of Fe and Mn may be went up while its bacteria may be reduced.

• 대한조선학회논문집
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• 제32권2호
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• pp.68-74
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• 1995

선박의 초기설계 단계에서 저항 추진 성능을 손쉽고도 정확히 추정하기 위해 통계해석 기법을 유용하게 사용하고 있다. 본 연구에서는 저항추진 성능 추정 프로그램에 필요한 기능들과 데이터뱅크의 구조를 제안하였다. 개발된 프로그램에는 저항 추진 계수를 추정하기 위한 여러 가지 도표와 회귀식이 포함되어 있으며, 데이터 뱅크를 이용한 일관회귀분석도 포함되어 있다. 또한 프로펠러 주요치수와 단독효율을 추정하기 위한 프로펠러의 간략한 설계 과정도 포함되어 있다. 프로그램의 기능과 데이터 뱅크의 정도를 검증하기 위해 임의의 선형 14 척에 대한 추정을 수행하였으며, 5% 이내의 좋은 추정 정도를 보여주고 있음을 확인하였다.

• Parasites, Hosts and Diseases
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• 제53권5호
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• pp.535-543
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• 2015

Integrated control strategies are important for sustainable control of schistosomiasis and soil-transmitted helminthiasis, despite their challenges for their effective implementation. With the support of Good Neighbors International in collaboration with National Institute of Medical Research, Mwanza, Tanzania, integrated control applying mass drug administration (MDA), health education using PHAST, and improved safe water supply has been implemented on Kome Island over 5 years for controlling schistosomiasis and soil-transmitted helminths (STHs). Baseline surveys for schistosomiasis and STHs was conducted before implementation of any integrated control strategies, followed by 4 cross-sectional follow-up surveys on randomly selected samples of schoolchildren and adults in 10 primary schools and 8 villages, respectively, on Kome islands. Those follow-up surveys were conducted for impact evaluation after introduction of control strategies interventions in the study area. Five rounds of MDA have been implemented from 2009 along with PHAST and improved water supply with pumped wells as other control strategies for complementing MDA. A remarkable steady decline of schistosomiasis and STHs was observed from 2009 to 2012 with significant trends in their prevalence decline, and thereafter infection rate has remained at a low sustainable control. By the third follow-up survey in 2012, Schistosoma mansoni infection prevalence was reduced by 90.5% and hookworm by 93.3% among schoolchildren while in adults the corresponding reduction was 83.2% and 56.9%, respectively. Integrated control strategies have successfully reduced S. mansoni and STH infection status to a lower level. This study further suggests that monitoring and evaluation is a crucial component of any large-scale STH and schistosomiasis intervention.

• 산경연구논집
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• 제13권10호
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• pp.1-8
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• 2022

Purpose: Support vector machines (SVMs) ensemble has been proposed to improve classification performance of Credit risk recently. However, currently used fusion strategies do not evaluate the importance degree of the output of individual component SVM classifier when combining the component predictions to the final decision. To deal with this problem, this paper designs a support vector machines (SVMs) ensemble method based on fuzzy integral, which aggregates the outputs of separate component SVMs with importance of each component SVM. Research design, data, and methodology: This paper designs a personal credit risk evaluation index system including 16 indicators and discusses a support vector machines (SVMs) ensemble method based on fuzzy integral for designing a credit risk assessment system to discriminate good creditors from bad ones. This paper randomly selects 1500 sample data of personal loan customers of a commercial bank in China 2015-2020 for simulation experiments. Results: By comparing the experimental result SVMs ensemble with the single SVM, the neural network ensemble, the proposed method outperforms the single SVM, and neural network ensemble in terms of classification accuracy. Conclusions: The results show that the method proposed in this paper has higher classification accuracy than other classification methods, which confirms the feasibility and effectiveness of this method.

• 환경영향평가
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• 제20권1호
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• pp.61-69
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• 2011

Integrated stream naturalness based on abiotic and biotic factors were developed. Abiotic factors considered in this study were types of land use in the riparian area, river bank and high water bed streamside, revetment, bed substrate and artificial construction of streamside. Biotic factors included types of vegetation, assemblages of fish, macroinvertebrate, bird and mammal(Otter) in streams. The presence/absence of legal species and biological assessment index were also weighted as important parameters in this study. Scoring criteria selected for each matrix was five rating system; 1=poor, 2=moderate, 3=fair, 4=good, 5=excellent. Numerical ratings for the matrix were then summed. This resulted in a minimum score of 13 if all matrix at a site were poor, and a maximum score of 65 if all matrix were excellent. Five grade system from poor(I) to excellent condition(V) was employed. To verify its validity in natural environment, the evaluation system was applied to the Gapchun stream which is a test bed selected. Our result showed that stream naturalness of each reach was clearly distinguished by biotic and abiotic characteristics. Determination of correlation coefficient between abiotic and biotic factors was also high ($R^2=0.96$, p<0.05). In conclusion, assessment for stream naturalness reflecting abiotic and biotic factors was useful method representing stream integrated.

• Asian Pacific Journal of Cancer Prevention
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• 제17권6호
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• pp.2883-2888
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• 2016

Background: Breast cancer (BC) is a serious lifestyle disease. There are several prognostic biomarkers like nuclear receptors whose over-expression is associated with BC characteristics. These biomarkers can be blocked by compounds with anti-cancer potential but selection must be made on the basis of no adverse side effects. This study is focused on finding of compounds from a plant source garlic. Materials and Methods: Twenty compounds from garlic and five targets considered involved in BC were retrieved from Pubchem database and Protein Data Bank respectively. They were docked using Accelrys Discovery Studio (DS) 4.0. The compounds which showed interaction were checked for drug likeliness. Results: Docking studies and ADMET evaluation revealed twelve compounds to be active against the targets. All the compounds displayed highly negative dock scores which indicated good interactions. Conclusions: The results of this study should help researchers and scientists in the pharmaceutical field to identify drugs based on garlic.

• 한국조경학회지
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• 제42권1호
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• pp.123-132
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• 2014

이 연구의 목적은 수변 생태벨트를 조성, 보전, 관리를 위해 수변생태벨트의 진단적 평가방법을 개발하는 것이었다. 평가의 기본 틀은 일본의 제방림 평가방법을 토대로 하였으며, 국내 수변녹지의 현황에 맞게 수정한 1차 수정평가방법으로 1차 시험평가를 실시하였다. 1차 시험평가의 문제점을 보완한 2차 수정안을 가지고 전문가를 대상으로 설문을 실시하고, 그 결과를 반영하여 최종 평가방법을 제안하였다. 최종 평가방법으로 홍천강에서 시험평가를 실시하였다. 최종적으로 제안된 평가방법의 평가영역은 5가지 분야 19가지 항목으로 구성되었으며, 5가지 분야는 치수, 환경기능, 식물생장, 생태벨트기능, 복원잠재성 등이다. 치수분야 평가항목은 수림의 길이, 폭, 밀도 등 3가지 항목으로, 환경기능분야는 공원이용, 경관 경계 및 주연부, 미기후 조절, 비점오염 제어 등 4가지 항목으로, 식물생장분야는 종 구성, 수림 높이, 계층구조, 덩굴식물, 식물활력도, 후계목 생장 등 6가지 항목으로, 생태벨트기능 분야는 종적 연결성, 횡적 연결성, 하천내 수림 혹은 서식지, 제방상단 도로 등 4가지 항목으로, 마지막으로 복원잠재력분야는 지형, 인접 토지이용 등 2가지 항목으로 구성되었다. 점수체계는 1~4까지 부여되었으며, 최종 평가결과 등급체계는 우수한 1등급에서 가장 열악한 5등급까지 5등급으로 구분하였다. 각 분야별 항목별 가중치는 동일하게 하였으며, 분야별 점수 평균값을 다시 평균하여 최종 등급을 판정하는 것으로 하였다. 홍천강을 대상으로 적용된 평가방법은 각 구간의 수변 생태벨트 실태를 효과적으로 보여주었다.

• 식물병연구
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• 제21권2호
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• pp.99-102
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• 2015

오이모자이크바이러스(CMV)는 고추에 심한 피해를 주는 바이러스이다. 2013년 고추 품종 청양의 선단부위에 괴저증상이 나타난 식물체로부터 CMV를 순수 분리하였고 이 분리주를 CMV-GTN으로 명명하였다. CMV-GTN과 기존에 특성이 잘 알려진 CMV-Ca-P1을 대상으로 외피단백질의 아미노산 서열과 여러 기주식물에서 생물적 반응을 비교하였다. CMV-Ca-P1의 외피단백질 아미노산은 217개로 구성되어 있었으나, CMV-GTN은 아미노산 서열 57번째에 발린이 추가된 218개로 구성되어 있었다. CMV-GTN과 GeneBank에 등록된 다양한 CMV 분리주들의 외피단백질유전자 유사성은 96-99%였다. 생물 검정에서 토마토와 고추에서 병원성이 강하게 발현되는 CMV-GTN을 고추 품종에 대한 저항성 스크린을 위하여 선발하였다. 고추 시판 품종 135종에 대하여 CMV-GTN으로 검정하였고 CMV-Ca-P1과 저항성 반응을 비교하였다. 그 결과 CMV-GTN에 대하여 저항성 반응을 표현한 품종은 프레미엄, 중도 저항성 품종은 핫스타, 카이저, 굿쵸이스였다. 한편 CMV-Ca-P1에 대한 저항성 품종은 베로따와 카이저였다.