• Journal of the Economic Geographical Society of Korea
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• v.18 no.4
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• pp.467-491
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• 2015

This paper aims at analyzing the characteristics of the immigration path, residential location, and housing ownership structure of Korean immigrants in London metropolitan area. The main results of this study are as follows. Firstly, factors influencing the initial residential location of Korean immigrants are situation of immigrants, immigration region, and help of prior Korean immigrants. Secondly, factors influencing the current residential location of Korean immigrants are income, ability of English, education at United Kingdom, and initial residential location. Thirdly, viewing the characteristics of the of housing ownership structure, migrants tend to reside their own housings while migration period go beyond 10 years and incomes exceed ${\pounds}$50,000. Forth, immigration path types of London Korean Immigrants are divided by ethnic enclave oriented type and mainstream society oriented type.

• Journal of the Economic Geographical Society of Korea
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• v.18 no.1
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• pp.17-44
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• 2015

This paper aims at elucidating the characteristics of immigration path and residential location, and analyzing the factors influencing housing ownership structure and preference of residential location factors of Korean immigrants in Los Angeles. The main results of this study are as follows. Firstly, immigration paths of Korean Immigrants are divided by spatial assimilation type and network of mainstream society oriented type. Secondly, according to the results of binomial logistic regression analysis, Korean town as a current residential location is selected by low-income class, aged migrants group, housing non-owner group and longer migration period group. Thirdly, migrants tend to retain detached housings in residential area of mainstream society while migration period go beyond 10 years and incomes exceed $60,000. Finally, according to ANOVA tests on the preferences of residential location factors. high-income and home owers groups more prefer location factors such as economics, natural environment, housing interior facilities, network of mainstream society.

• Korean journal of applied entomology
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• v.54 no.3
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• pp.247-255
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• 2015

The cotton aphid, Aphis gossypii Glover (Hemiptera: Aphididae) infests citrus orchards, causing sooty mold damage to the fruits. This study was conducted to investigate the colonizing route of A. gossypii in citrus orchards in a non-heating plastic-film house during the early season. The overwintering eggs of the aphids are frequently found on summer shoots of the citrus trees. The eggs were mostly those of Aphis citricola, without any A. gossypii when hatched. The colonization of citrus trees by alate A. gossypii in non-heating plastic-film houses was mainly observed twice, with advanced flight in late April and delayed flight in late May. The delayed flight was synchronized with the timing of the emergence of alate A. gossypii from the fundatrix generation in the holocyclic life cycle. During advanced flight in closed citrus orchards, alate A. gossypii were caught in yellow water traps installed in the fields, and the populations were found to originate from the surviving populations of the anholocyclic life cycle. Consequently, we concluded that citrus tree colonization with A. gossypii occurred during the advanced flight of the anholocyclic and the delayed flight of the holocyclic life cycle.

• Digital Contents
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• no.3 s.118
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• pp.134-137
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• 2003

미디어는 콘텐츠를 유통시키는 경로이면서 콘텐츠를 담는 그릇이다. 디지털 경제의 진행에 따라 기존 미디어 산업에 큰 변화가 일어나고 있다. 방송, 통신, IT의 융합이 일어나고 디지털미디어의 출현으로 콘텐츠 제작에서 유통, 이용에 이르는 전 과정이 디지털화된다. 디지털화의 급진전으로 방송사업자, 통신사업자, IT사업자의 구분이 어려워지고 있다. 디지털 미디어의 확산과 정착에 의한 콘텐츠 시장의 증대는 콘텐츠 수용자의 기호 변화에 좌우된다.

• Korea journal of population studies
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• v.27 no.1
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• pp.147-169
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• 2004

The paper examines migration and settlement process of the Ulleung Island residents. On the theoretical side, this paper analyzes migration and settlement process of the Ulleung Island residents in relation with a social, cultural, and political phenomenon of that island. And on the methodological side analyzes this paper historical literatures and output materials of field work. In order to achieve the purpose of this study, this paper approaches the issue on three dimensions. First, this article pursues the movement course of the Ulleung Island residents in the early Gaecheokryoung era. Second, it follows up their settlement process. Third, it tries to find out the factors of the population increase and decrease. The findings are as follows: The factors of migration of Ulleung Island residents are following three - first, social and political motive, second, economical motive, and third, criminal motive. The immigrants with these motives have constituted a unique society on the Ulreung Island.

• Journal of Korean Association for Spatial Structures
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• v.9 no.2
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• pp.45-52
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• 2009

This paper experimentally evaluates the strength characteristics of precast column-R.C. foundation anchor joint subjected to the cyclic horizontal load. The study presents differences in accurate stress transfer path and destruction mechanism between the concrete structural body applying the precast column-R.C. foundation anchor joint and the concrete structural body applying the steel joint. the result from width load experiment on reinforcing steel under the cyclic horizontal load provides the necessary minimum insertion length to construct the precast column-R.C. foundation anchor joint. This study also presents the accurate stress transfer path and destruction mechanism on the anchor joint th meet the customer's requirements, comparing stress transfer path and destruction mechanism provided by the experiment and those provided by the product manual. Eventually, this study presents all the necessary fundamental data to provide the construction design with accurate number of reinforcing steel, diameter of the steel, fixation length of the steel, etc. to build the optimum precast concrete column.

• Journal of The Korean Association For Science Education
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• v.33 no.1
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• pp.161-180
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• 2013

The purpose of this paper is to introduce the current studies and research methods about Learning Progressions disseminated to several countries including the U.S. since 2006. It also provides a methodological base to investigate learning progressions in science by introducing a case study of learning progression conducted in Korea. For this study, we described several features of current studies on learning progressions in the U.S., and reported the common ways and sequences employed in examining learning progressions especially with respect to assessment for learning. Learning progressions are descriptions of developmental pathways of learning a topic, in which science knowledge is used in students' engaging in science practices. Each learning progression consists of upper anchor, lower anchor, and intermediate steps that connect both anchors. In investigating a learning progression, researchers usually utilize Wilson's four building blocks of assessment system based on the assessment triangle. This kind of method was also applied in investigating the learning progression for water cycle in this study. We discussed implication and consideration for the future research on learning progressions in science in Korea.

• The Journal of The Korea Institute of Intelligent Transport Systems
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• v.7 no.3
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• pp.1-14
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• 2008

Mass transit information should contribute many benefits to users. Especially transportation information technology is developing highly with information technology in Korea recently. Hereafter it is expected to provide customized transportation information to users individually with the advent of ubiquitous age in earnest. This public transportation information service can be realized by path finding algorithms in public transportation networks including travel and transfer attributes. In this research, multi objectives such as travel time, transfer time, and number of transfer and so on are constructed with the primary facts influencing users. Moreover, the method reducing user's path finding alternatives arbitrarily is proposed by selecting the best alternative which provides maximum utility to users among non dominated paths. Therefore, the ultimate goal of this study proposes a multi objective shortest paths finding algorithm which can take into account multiple user classes in a transit network with multiple travel modes. The proposed algorithm is demonstrated based on the two case studies - a small toy network and the large-scaled Seoul Metropolitan subway network.

• 한국벤처창업학회:학술대회논문집
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• 2019.04a
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• pp.37-43
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• 2019

본 연구에서는 귀농 귀촌인들이 성공적인 정착을 할 수 있는 계기를 마련하고자 '소셜미디어' 활용 사례를 연구하였다. 연구를 위해 귀농 귀촌 현상을 살펴보고 소셜미디어의 중요성을 알아보았다. 귀농 귀촌인 대상을 선정하여 인터뷰를 진행하였으며 필립코틀러의 마켓4.0의 5가지 마켓경로(인지, 호감, 질문, 행동, 옹호)와의 연관성을 사례분석을 통해 살펴보았다. 연구결과로 첫째, 귀농 귀촌인이 직접 재배하는 친환경 농산물을 성공적으로 판매할 수 있었던 주요 원인은 다음과 같다. 첫째, 소셜미디어를 적극적으로 활용했다. 둘째, 계절마다 농산물을 재배하고 수확하는 과정을 체험할 수 있는 프로그램을 운영하여 농산물에 대한 만족도를 높였다. 셋째, 현장체험 및 농산물의 사용 후기, 가격 등을 다양한 채널에서 검색을 가능하게 했으며 각 채널마다 고객과의 소통을 원활하게 했다. 넷째, 소셜미디어 운영에 있어 지속적으로 새로운 콘텐츠를 노출하여 연속적인 구매활동을 유도했다. 다섯째, 구매 후기를 활용하여 재구매를 유도했다.

• The Journal of the Korea Contents Association
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• v.17 no.2
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• pp.337-348
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• 2017

The Army tried to settle the mission command in army command system in 1999 but still not be settled. One of the reason is the absence of practical plans of mission command. The purpose of this study is to find out the moderating effects of personal thinking type to the impact on organizational effectiveness about the impact on organizational effectiveness on sub factors the transformational leadership The main results of this study are as follows. <H1> The charisma and the personal considerations of sub factors of transformational leadership effected positively(+) on the job satisfaction, the charisma effected positively(+) on the organizational commitment. But There was no statistically significant influence on the personal considerations and the effort advocacy <H2> In the result of the moderating effects, in accordance the of a person's each cognitive processing traits is high and low, on the transformational leadership turned out to be a gap in the influence show the difference in organizational effectiveness.on the organizational effectiveness. This results suggest the following. The first. The military group regard highly commandand and discipline. so, the charisma of a superior is that a big impact on organizational effectiveness. The second, For the mission command is to become established in the army, It suggest that need to explore of sub factors of the mission command and need to consider of personal traits with the mission command.