• Asian-Australasian Journal of Animal Sciences
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• 제30권10호
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• pp.1365-1371
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• 2017

Objective: This study was conducted to investigate the basic information on genetic structure and characteristics of Korean Native chickens (NC) and foreign breeds through the analysis of the pure chicken populations and commercial chicken lines of the Hanhyup Company which are popular in the NC market, using the 20 microsatellite markers. Methods: In this study, the genetic diversity and phylogenetic relationships of 445 NC from five different breeds (NC, Leghorn [LH], Cornish [CS], Rhode Island Red [RIR], and Hanhyup [HH] commercial line) were investigated by performing genotyping using 20 microsatellite markers. Results: The highest genetic distance was observed between RIR and LH (18.9%), whereas the lowest genetic distance was observed between HH and NC (2.7%). In the principal coordinates analysis (PCoA) illustrated by the first component, LH was clearly separated from the other groups. The correspondence analysis showed close relationship among individuals belonging to the NC, CS, and HH lines. From the STRUCTURE program, the presence of 5 clusters was detected and it was found that the proportion of membership in the different clusters was almost comparable among the breeds with the exception of one breed (HH), although it was highest in LH (0.987) and lowest in CS (0.578). For the cluster 1 it was high in HH (0.582) and in CS (0.368), while for the cluster 4 it was relatively higher in HH (0.392) than other breeds. Conclusion: Our study showed useful genetic diversity and phylogenetic relationship data that can be utilized for NC breeding and development by the commercial chicken industry to meet consumer demands.

• 한국식품조리과학회지
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• 제29권5호
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• pp.617-624
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• 2013

Korean Food Globalization has been launched as a tool of civil ambassador and the high value-oriented industry. According to department of statistics in 2012, the trend of Korean food globalization from international visitors of Chinese and Japanese has grown. Hence, this study is purposed to identify the level of satisfaction of Chinese and Japanese consumers based on their food-related lifestyle. The survey was conducted by interviewing 403 Chinese and Japanese visitors who have experienced Korean food. The survey questionnaire was composed of 3 parts of demographic information, food-related lifestyle, and satisfaction of Korean restaurant. As factor analysis results, 3 factors were yielded for the food-related lifestyle factors-a eat-out preferred group, a health preferred group, and a taste preferred group, and 3 factors were generated for Korean restaurant satisfaction-hygiene and service, menu, and food quality. For cluster analysis, 3 clusters were identified as follows: high interested in food itself, health interested, and taste interested. Female appears to be significantly different in terms of 3 clusters than male. Nationality shows that Chinese consumers showed a high interest in food itself whereas Japanese consumers were high interested in health. With regard to Korean restaurant satisfaction, service appeared to be important in Chinese consumers while Japanese consumers showed a higher mean value on serving size, price, and nutrition. The findings concluded that by understanding the nature of food-related lifestyle of international visitors, marketing strategies can better meet visitors' expectations and increase their satisfaction with Korean restaurants.

• Proceedings of the National Institute of Ecology of the Republic of Korea
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• 제1권1호
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• pp.31-40
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• 2020

The rapid development of technologies in unmanned aerial vehicles (UAVs) has led to their use in various areas. UAVs are mainly used for commercial purposes, but their utilization is increasingly important in other areas because their operation cost is less than satellites and aerial imaging. The utilization of UAVs in the environment/ecology area is relatively new. Therefore, identifying the trends of UAV-related spatial information is significant in basic research for UAV utilization. This study quantitatively identified domestic and international research trends related to UAV utilization and analyzed research areas. An attempt was also made to identify upcoming UAV-related topics in the environment/ecology research field using text mining to analyze the bibliographic information of global research literature. Domestic UAV-related studies were classified into seven clusters where basic research on "UAV technology/industry trends" was abundant, and studies on data collection and analysis through UAV remote sensing technology have increased since 2015. Eight clusters were identified for international studies where the most active research area international was "remote sensing technology/data analysis". In addition, Canopy, Classification, Forest, Leaf Area Index, Normalized Difference Vegetation Index, Temperature, Tree, and Atmosphere appeared as the main keywords related to environment and ecology. The appearance frequencies and association strengths were high because the advancement in UAV optical sensor technology and the rapid development of image processing technology enabled the acquisition of data that could not be obtained from existing spatial information. They are recognized as future research topics as related domestic studies have begun corresponding to international research.

• 한국동물위생학회지
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• 제37권1호
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• pp.11-18
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• 2014

Porcine reproductive and respiratory syndrome (PRRS) causes a significant economic loss in the swine industry not only in Korea but also all over the world. Andong and Hapcheon region were selected for Area Regional Control (ARC) programme to reduce the shedding of PRRS virus (PRRSV) and decrease PRRS outbreaks. Before conducting the PRRS ARC, sera of pigs were tested for both antibody using ELISA and antigen using RT-PCR, then phylogenetic classifications was analysed. Pigs of 138/275 (50.2%) in Andong and 352/425 (82.8%) in Hapcheon were seropositive. Also, the RT-PCR results revealed that 27 heads (8.2%) in Andong, 112 heads (22.0%) in Hapcheon were positive for PRRSV antigen. PRRSVs were mainly detected between the ages of 40 to 60 days. PRRSV ORF5 regions were used to determine genetic clusters based on previous report. All PRRSV type I detected in both Andong and Hapcheon were classified as Cluster I. The PRRSV type II isolates in Andong were assorted to Cluster II, whereas the PRRSV type II isolates in Hapcheon were the viruses were unassembled into any cluster except one identified to Cluster III. Phylogenetic analysis indicated that new clusters of PRRSVs type II were prevalent in Hapcheon.

• 한국경제지리학회지
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• 제24권3호
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• pp.232-242
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• 2021

이 논문의 목적은 국가혁신클러스터 사업을 사례로 한국의 산업발전과 경기도의 역할을 살펴보는 데 있다. 비수도권 지역의 산업발전을 목적으로 이루어진 국가혁신클러스터 사업에서 국가융복합단지내 기업들의 총괄 거래의 지역적 구조를 살펴보면, 경기도를 포함한 수도권 내 기업들과의 거래가 전체 거래 비율에서 약 50% 이상을 차지하고 있다. 특히 14개 국가혁신클러스터 중 5개 국가혁신클러스터는 기업 간 거래 비중에 있어서 사업대상 지역내 거래보다 경기도에 입지한 기업들과의 거래가 훨씬 높게 나타났다. 이러한 맥락에서 살펴볼 때, 향후 지역산업 정책방향을 수도권 대 비수도권이라는 이분법적 구조에서 진행하는 것보다는 수도권과 비수도권 상생 협력에 초점을 두고 추진하는 것이 필요하다.

• 산업진흥연구
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• 제9권2호
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• pp.45-58
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• 2024

본 연구는 대전 지역에 위치한 연구소기업과 전국에 있는 연구소기업 고객사 간의 사회적 네트워크 구조 특성을 동종 기술 간 지역적 군집화 경향으로 모형화했고, ERGM(Exponential Random Graph Model) 분석 모형 대비 관측값이 95% 신뢰구간 내 포함되었다. 기업 모두 대전 유성구에 위치한 경우, 다른 행정구역에 속한 경우보다 연결 확률이 약 13배 높았을 뿐만 아니라 동종 기술을 가진 기업 간에는 구색성 및 동질성 값이 부의 값(0.1904)으로 활발한 연결 경향을 보였으며, 특히 6대 기술 중 '환경·에너지기술(ET)' 기업 간에 P값이 0.035로 가장 유의하였다. 유성구에 속하지 않은 기업 사이에는 음의 값(-0.0035)을 보이고, 군집 경향도 적었다. 이를 통해 대덕연구개발특구가 입지한 대전광역시 유성구가 혁신클러스터의 중심지 역할을 형성하고 있음을 확인할 수 있었다.

• 한국의류학회지
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• 제23권6호
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• pp.886-897
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• 1999

Fitness of clothes becomes a major concern in apparel industry. But girls had difficulties to buy ready-made clothes of good fit. To solve this problem it is necessary to classify girls' lower body Into several kinds of somatotypes and to develop dress form. The purposes of this study was to classify lower body types of middle-high school an provide the dress forms based on the analysis of their lower body types. The subjects for anthropometric measurement were 402 middle-high school girls of 13 to 15 year-old. The result of factor analysis indicated that 5 factors were extracted from anthropometric measurments through factor analysis and those factors comprise 71% of total variance. 4 clusters were categorized using 5 factor scores by cluster analysis 4 lower body dress forms for middle-high school girls were made of gypsum mould. By the analysis of more photograph three dimensional characteristics of somatotype and overlapped cross-section diagrams were analyzed.

• 한국의류산업학회지
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• 제6권1호
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• pp.51-60
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• 2004

The purpose of the study was to investigate the lifestyle and individualism/collectivism of adolescents nowadays and the relationship to preferred sensation. We collected 1386 middle and high school students' data which have the answers about lifestyle, individualism/collectivism, self-esteem, school location, family members and other socio-statistical variables. The results are followings; The types of adolescents' lifestyle composed of 5 clusters, which are Pursuit of hedonic (18.9%), Adventure materialism (19.9%), Depending and pursuit of entertainment (21.4%), Internet & study (22.5%), and Strong will - economic (17.3%). Distribution of individualism/collectivism is even, and Egoist (29.8%) which belong to vertical individualism is the biggest portion. Adolescent's lifestyle has relationship to the external factors, such as school location and family income, while individualism/collectivism does rather to adolescent's own nature, such as gender and grade. Their lifestyle than their individualism/ collectivism is connected with their preferred sensation more.

• 대한가정학회지
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• 제41권5호
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• pp.89-97
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• 2003

Fitness of clothes becomes a major concern in apparel industry. But high-school boys had difficulties to buy ready-made clothes of good fit. To solve this problem, it is necessary to classify boys' upper body into several kinds of somatotypes. The purpose of this study was to classify upper body types of high school boys based on the analysis of their upper body types. The subjects for anthropometric measurement were 99 high school boys of 16 to 18 year-old. The result of factor analysis indicated that 5 factors were extracted from anthropometric measurements through analysis and those factors comprise 68.44% of total variance. 3 clusters were categorized using 5 factor scores by cluster analysis. Type 1 was taller than other types and was bending somatotype. Type 2 was straight somatotype and had average size. Type 3 was characterized by short and small figure and had bending somatotype.

• 국방과기술
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• 5호통권291호
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• pp.30-41
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• 2003

최근 컴퓨터기술의 발전과 더불어 등장한 컴퓨터모델링기법을 이용하여 현재는 존재하지 않으나 합성에 의해 만들어낼수 있는 새로운 분자들을 예측할 수 있게되었다. 이러한 기술을 에너지물질의 설계에 적용하려는 시도가 1890년대부터 시작되어, 새로운 고밀도 고에너지물질 분자들이 이론적으로 존재 가능하다는 연구결과가 속속 보고되고 있다. 에너지물질 분자들의 주요 구성원소는 C, H, N, O 등인데, 이들 원자들로부터 에너지효율을 극대화하기 위하여 선진국을 위시한 세계 여러 나라의 이론화학자들이 양자역학 이론에 바탕을 둔 ab initio 계산이 주가 되는 분자모델링 기법을 이용하여 새로운 분자들의 존재가능성을 예측하려는 연구가 활발하게 이루어지고 있다. 이러한 새로운 고에너지 물질을 찾으려는 노력의 일환으로 순수한 질소 원자들로만 이루어진 분자들, 일명 질소클러스터(Nitrogen Clusters)에 대한 연구가 진행되고 있는데, N4에서 N60까지 다양한 개수의 질소원자로 이루어진 질소크러스터의 존재가능성이 이론적으로 확인되고 있고, $N5^+$가 최근 합성되는 등 이들 새로운 초 고에너지의 분자들의 출현이 기대된다.