• 유통과학연구
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• 제15권12호
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• pp.21-30
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• 2017

Purpose - This research approaches to the new niche market of medical tourism to investigate how factors of cultural similarity influence the international distribution management. This study also estimates the interaction effects of distribution channel on the relationships of facility attributes and customers' destination choice behavior. Research design, data, and methodology - We collected the sample of 881 potential customers from the more economically developed regions in China. Regression analysis is used to confirm the relationships in the research model. Results - The result shows that cultural similarity plays an important moderating role in the relationships of facility attributes and destination choice intention. For instance, power distance and masculinity interact with the distribution facility characteristics of medical quality and reputation to influence customers' selection of the destination country. Individualism, powder distance, and masculinity play moderating roles when social environment affects destination choice intention. Especially, all the elements of cultural similarity moderate the relationships between travel cost and destination choice intention. This research also proves that depending on distribution channel, determinants of distribution facility are the critical predictors of intention to select the medical service outside of China. Conclusions - The study enables managers to develop the more effective strategies reflecting the interaction effects of cultural similarity and distribution channel on customers' decision-making process.

• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2021년도 추계학술대회
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• pp.658-660
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• 2021

본 연구의 목표는 확산 광학 단층 촬영에 대한 기준 영상을 사용하여 동질성과 이질성을 분리하기 위한 재구성된 영상들간의 수치적 평가를 위해 구조적 유사성 지수에 기초한 알고리즘을 개발한다. 글로벌 지오메트리 및 관심 영역 평가는 유사성을 산출하기 위해 측정되었으며, 그 결과 구조적 유사성 지수의 평균이 모델 내부에 가시적 포함 여부를 판단할 수 있는 잠재적 성능을 나타낸다는 것을 알 수 있으며, 구조적 유사성 지수는 유방 구조 정보를 평가하기 위한 이미지 평가를 지원 가능한 것으로 확인 되었다.

• 산경연구논집
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• 제9권8호
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• pp.17-26
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• 2018

Purpose - Indonesian economy often receives negative impact from external factors, particularly through trade linkage. To mitigate that impact, the export market and product diversification should be established. Latin America is one of the potential regions to augment the Indonesian export market. Research design, data, and methodology - This study attempts to classify the potential market and product for Indonesian export, particularly in Latin America, by using panel regression, trade complementarity, and export similarity index over the period 2000-2015. Regression was also used to examine whether the presence of the Indonesian Trade Promotion Center (ITPC) can support diversification. Results - Based on regression results, those indexes established Chile, Uruguay, Suriname, and Ecuador as the priority countries with the products: animal and vegetable oils, fats and waxes; chemicals and related products; miscellaneous manufactured articles; commodities and transactions. Conclusions - The results of the regression concludes that the trade complementarity index gave a significant positive effect to boost Indonesian export, whereas, the export similarity index gave a significant negative effect. The regression also conclude that ITPC gave a significant positive impact on Indonesian export. For instance, the government should prioritize those countries and products and also develop ITPC there to optimize Indonesian export.

• 한국항해항만학회지
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• 제31권5호
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• pp.377-383
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• 2007

선사들의 자가 터미널 확보, 전략적 제휴 및 M&A, 선박의 대형화는 항만으로 하여금 기항지 축소와 항만간 경쟁을 초래하게 하였다. 이러한 해운 항만의 환경변화는 선사들이 항만평가 기준인 항만선호도, 성장가능성 항만경쟁력 등에 대한 평가도 변하게 하고 있다. 선사들의 항만평가 기준의 변화는 항만이 추구해야 하는 정책방향을 결정하기 때문에 중요한 연구의 주제라고 할 수 있다. 따라서 본 연구에서는 ANVOA 분석과 Duncan 검증을 통해 선사들의 항만 기항선호도, 성장가능성, 항만경쟁력의 평가변수들을 대상으로 전세계 8개 주요항만(싱가포르항, 홍콩항, 상하이항, 부산항, 로테르담항, 함부르크항, 카오슝항, 도쿄항)을 유사 항만군으로 그룹핑하여 평가하고자 한다. 이는 평균차이 검증을 통해 선사들이 전세계 주요 항만을 평가하는 객관적인 평가결과로 사용될 수 있을 것이다.

• 한국작물학회지
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• 제46권2호
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• pp.157-163
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• 2001

Introgression from genetically modified plants (GMPs) may be dependent on the genetic similarity to wild relative plants. In Korea, many wild plant species are botanically related to the cultivated plants that have a potential to be genetically transformed. The controversy for hazards of GMPs is continuing because the studies on gene flow or introgression are little. Based on the systematic criteria, we have surveyed Korean wild plant species that showed the similarity to cultivating crops. The consideration for feasibility of genetic pollution (introgression of transgene) is necessary for the successful accomplishment in the practical use of GMPs. Although the detrimental effects of GMPs on wild relatives have not been clearly verified, Korean wild plant species related to crop plant (potential GMP) have to be investigated with respect to the introgression. Korean flora consists of ca. 5,500 species. Among them, 1,448 species are classified as weed species (966 native, 325 naturalized, and 167 escaped ones), which is vulnerable to GMPs in term of introgression. We suggested the principal Korean wild plants related to major crops that might be affected by GMPs via introgression. The investigated species herein are selected based on the morphological and phenological relationship. It is necessary to verify the genetic relationship between cultivated plants and wild relatives sing more precise molecular techniques, which provide the information of likelihood for the introgression of transgene.

• Ecology and Resilient Infrastructure
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• 제9권4호
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• pp.269-281
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• 2022

기후변화에 따라서 식생과 식물종의 분포 변화를 예측하는 것이 생태계 관리에서 중요하다. 본 연구에서는 동아시아의 난대 목본식물종의 한반도 분포 가능성을 체계적으로 평가할 수 있는 방안을 개발하고자 하였다. 먼저 중국과 일본에서는 분포하지만 한국에는 분포하지 않은 난대 목본식물종의 목록을 수집하고 그들의 전지구적 분포와 생물기후 자료를 수집하였다. 또한 한국의 난대식생대를 한랭지수를 이용하여 구분하고 이 지역의 기후 정보를 수집하였다. 기후 변수들 사이의 상관분석으로 다중공선성을 배제하고 분포에 영향을 미치는 기후변수로서 최한사분기 평균기온, 평균온도일교차 및 연강수량이 선택되었다. 동아시아 난대 목본식물종의 분포지와 한국 난대식생대의 3가지 기후 변수 사이의 유사도를 산출하기 위하여 다변량 환경 유사도 표면 (MESS) 분석을 실시하였다. 최종적으로 단계적 변수선택 회귀로 MESS 유사도 지수에 영향을 미치는 주요 기후변수로서 최한사분기 평균기온과 연강수량을 선별하였다. 선택된 2 변수로 구성된 다변량 일차회귀에서 최한사분기 평균기온이 전체 변이의 88%를 차지하였다. 총 319 동아시아 난대 목본식물종에 대하여 MESS 유사도 지수를 산출하는 구축된 다변량 회귀식을 적용하여 이들이 한국에 잠재분포 할 가능성을 평가할 수 있었다.

• 한국컴퓨터정보학회논문지
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• 제29권5호
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• pp.1-10
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• 2024

공격자들은 공격 대상인 IT 자산을 찾을 때 자신이 가지고 있는 유사한 취약점을 사용하는 경향이 있다. 따라서 IT 자산 중 표적이 될 수 있는 유사한 운영체제, 애플리케이션이 있을 때 이를 사전에 찾아내는 것이 중요하다. 본 논문은 효율적인 취약자산 관리 및 제로데이 대응을 위한 새로운 접근 방식을 제안한다. 해당 방법론은 클러스터링과 유사도 계산 결과를 기반으로 새로운 취약점이나 이미 발견된 취약점에 의해 감염될 가능성이 있는 IT 자산을 탐지하는 기능을 제공한다. 실험 결과, 수집된 전체 자산의 86%의 정확도로 클러스터의 목적에 맞게 분류되었으며, 무작위 자산을 선정하여 유사성 계산 실험을 한 결과 동일한 운영체제 및 서비스를 사용하는 자산이 나열됐다.

• 대한기계학회:학술대회논문집
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• 대한기계학회 2000년도 춘계학술대회논문집A
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• pp.780-785
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• 2000

The equi-potential lines designed in the electric field are introduced to find the preform shape in axisymmetric hot forging. The equi-potential lines generated between two conductors of different voltages show similar trends of the minimum work paths between the undeformed shape and the deformed shape. Base on this similarity, the equi-potential lines obtained by arrangement of the initial and final shapes are utilized fur the design of preform, and then the artificial neural network is used to find the range of initial volume and potential value of the electric field.

• Investigative Magnetic Resonance Imaging
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• 제25권3호
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• pp.156-163
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• 2021

Recently, neuromelanin and nigrosome imaging techniques have been developed to evaluate the substantia nigra in Parkinson's disease. Previous studies have shown potential benefits of quantitative analysis of neuromelanin and nigrosome images in the substantia nigra, although visual assessments have been performed to evaluate structures in most studies. In this study, we investigate the potential of using deep learning based automatic region segmentation techniques for quantitative analysis of the substantia nigra. The deep convolutional neural network was trained to automatically segment substantia nigra regions on 3D nigrosome and neuromelanin sensitive MR images obtained from 30 subjects. With a 5-fold cross-validation, the mean calculated dice similarity coefficient between manual and deep learning was 0.70 ± 0.11. Although calculated dice similarity coefficients were relatively low due to empirically drawn margins, selected slices were overlapped for more than two slices of all subjects. Our results demonstrate that deep convolutional neural network-based method could provide reliable localization of substantia nigra regions on neuromelanin and nigrosome sensitive MR images.

• 생태와환경
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• 제44권1호
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• pp.42-57
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• 2011

We described the above-ground plant species composition and measured a range of soil physico-chemical properties and the composition and size of the soil seed bank in the remnant natural vegetations on the flood plains of the Han River within Seoul, South Korea. We used analysis of variance and multivariate analyses to analyse the data and S${\o}$rensen's similarity index to compare the composition of the vegetation and seed banks. The soils were circum-neutral and composed of mainly sand and silt fractions with a very limited clay component; a gradient based on sand/clay proportions was identified. The soil seed banks varied markedly between- and within-sites and had much greater species diversity than the above-ground vegetation. Two of the major dominants in the vegetation (Miscanthus saccariflorus and Phragmites australis) were found at very low densities in the seed bank. The site differences appeared to be correlated with the sand-clay gradient, suggesting that the soil properties differentially affected seed inputs into the soil, or that the processes than controlled sediment deposition during floods was also important in differentially affecting seed deposition. Lastly, there was relatively little similarity between the vegetation, dominated mainly by perennials, and the seed bank which contained a relatively large proportion of annuals and biennials. This result suggests that after disturbance caused by flooding there is the potential for many other species to colonize. This may impinge on the regeneration potential of the sites and cause concern for the future conservation of these important remnants of natural vegetation.