• Journal of the Korean Data Analysis Society
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• v.20 no.6
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• pp.3227-3238
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• 2018

This study attempts to investigate the trajectories of socio-economic deprivation on the depression trajectories among middle-aged individuals using a latent growth model over the last five years. Using the Korea welfare panel study data ranged from the year 2013 (8th wave) to the year 2017 (12th wave), a sample of 7,437 aged over 40 was selected. Three hypothesis was proposed as follows. Is the trajectory of depression changing over the years? Are the initial values of socio-economic deprivation causally related to the initial values of depression? Are the rates of change in socio-economic deprivation causally related to the rates of change in depression? Results showed that the growth curve of depression tended to decline negatively over the five-year period. As the intial values of socio-economic deprivation increased, so did the initial values of depression move upwards. Finally, as the changes of socio-economic deprivation tended to get larger, those changes of depression also accordingly increased as well. The public policy implications based on the current study were discussed to pay more attention to those middle-aged individuals suffering from socio-economic deprivations.

• Journal of the Korean Regional Science Association
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• v.37 no.1
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• pp.15-27
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• 2021

This study investigates the difference in income trajectories of the working poor and the non-working poor and explains the effects of socio-demographic (marriage, education) and regional (living in large cities) factors on intergroup differences. We use Seoul Survey data collected between 2009-2018 and the latent growth modeling approach. It was found that the trajectory difference between groups was statistically significant. Since 2016, the income gap widened as the income of the working poor stagnated. The three variables included in this model better explained the income trajectory of the working poor compared to the working non-poor. In particular, the change in income growth rate was positively related to whether they live in large cities. This suggests the possibility that living in a large city would act as an economic premium for the working poor. It is necessary to conduct follow-up studies on urban premiums for the working poor.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2012.06a
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• pp.463-465
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• 2012

선박근무자의 피로는 해양사고의 잠재적 요인으로 혹은 인적과실에 기여하는 한 요인 정도로만으로 여겨졌으나, 최근 이와 관련한 연구에 의하면 선박근무자의 피로가 임무수행에 밀접하게 영향을 미치며, 인적과실을 유발하는 주요한 원인 중 하나라는 사실이 밝혀지게 되면서 선박 인간공학분야에서의 인간공학적 요소들의 고려 여부가 관심의 대상이 되고 있다. 선박근무자의 피로 발생원인은 명확히 밝혀져 있지 않으며, 선상작업에서 오는 스트레스, 감정 및 작업 등에 의해 영향을 받는 것으로 보이나, 통상 피로는 주로 한 가지 원인보다 복합적인 원인에 의하여 발생되는 것으로 알려져 있다. 본 연구에서는 이러한 선박근무자의 자각피로도와 직무스트레스의 효율적 관리를 위하여 선상에서 간편하게 자각피로도를 측정할 수 있는 방법을 제안하고자 한다.

• Asia-Pacific Journal of Business Venturing and Entrepreneurship
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• v.18 no.5
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• pp.141-157
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• 2023

Start-ups are the driving force of economic development and play an important role in improving national competitiveness. The country's start-up support policies are increasing every year, but indicators that do not challenge them and do not consider future start-ups can predict employment reduction and unemployment can increase further. You can. The increase in the number of young people doing nothing is causing economic hardship and neglect of future precious human resources, which calls for a more realistic national entrepreneurship policy. Accordingly, this study sought to identify bias and environmental factors in order to reveal factors that influence the will to start a business among potential entrepreneurs in Korea. For this purpose, descriptive statistical analysis was performed using SPSS on a sample of 227 responses from the general public who are potential entrepreneurs interested in starting a business. As a result, prejudice decreased the will to start a business and increased fear of failure. On the other hand, the entrepreneur's environmental factors reduced the fear of failure and increased the will to start a business. Lastly, fear of failure was found to play a mediating role between the two independent variables and the will to start a business. The results of this study showed that prejudice was a negative factor in the will to start a business, and the environment was a positive factor. These research results suggest that in order to revitalize entrepreneurship, positive environmental factors that can provide entrepreneurs' correct recognition and support for entrepreneurship are necessary.

• Korean Journal of Agricultural and Forest Meteorology
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• v.15 no.4
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• pp.219-233
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• 2013

We employed the ecological niche modeling framework using GARP (Genetic Algorithm for Ruleset Production) to model the current and future geographic distribution of Pinus densiflora based on environmental predictor variable datasets such as climate data including the RCP 8.5 emission climate change scenario, geographic and topographic characteristics, soil and geological properties, and MODIS enhanced vegetation index (EVI) at 4 $km^2$ resolution. National Forest Inventory (NFI) derived occurrence and abundance records from about 4,000 survey sites across the whole country were used for response variables. The current and future potential geographic distribution of Pinus densiflora, one of the tree species dominating the present Korean forest was modeled and mapped. Future models under RCP 8.5 scenarios for Pinus densiflora suggest large areas predicted under current climate conditions may be contracted by 2090 showing range shifts northward and to higher altitudes. Area Under Curve (AUC) values of the modeled result was 0.67. Overall, the results of this study were successful in showing the current distribution of major tree species and projecting their future changes. However, there are still many possible limitations and uncertainties arising from the select of the presence-absence data and the environmental predictor variables for model input. Nevertheless, ecological niche modeling can be a useful tool for exploring and mapping the potential response of the tree species to climate change. The final models in this study may be used to identify potential distribution of the tree species based on the future climate scenarios, which can help forest managers to decide where to allocate effort in the management of forest ecosystem under climate change in Korea.

• Electronics and Telecommunications Trends
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• v.19 no.2 s.86
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• pp.18-27
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• 2004

디지털 기술에 기반하여 출현한 DMB 방송서비스는 이동 TV 수신이라는 강력한 경쟁력을 보유하였으며, 아울러 CD 수준의 음질과 문자방송 수신이 가능한 방송 서비스이다. 국내에서는 DMB 서비스 제공을 위하여 방송법 개정이 논의되고 있으며, 2004년에 수도권을 대상으로 TV의 12번 채널(6MHz 대역)에 3개의 지상파 사업자 허가를 준비중에 있다. 또한 위성 DMB 부문에서는 사업자 차원에서 서비스가 준비되고 있다. 지상파 DMB 방송은 무료로 제공되며, 주로 광고 수익 등으로 운영되는 반면 제공되는 채널 수가 한정되어 있다. 그러나 위성 DMB 방송은 지상파에 비해 채널이 다양한 반면 월 일정액의 이용요금을 추가로 징수할 예정이다. DMB 서비스는 방송. 통신 융합시대를 이끌어 갈 주역으로, 방송 .통신 업계의 새로운 성장동력으로 평가받고 있다. 그러므로 DMB 서비스의 성공은 전후방 산업의 활성화를 통해 국민경제 파급효과가 클 것으로 기대된다. 본 논문에서는 DMB 서비스에 대하여 시장에서 요구하는 잠재적인 수요요인을 파악하기 위하여 잠재 소비자 1,000명에 대하여 설문조사를 수행하였다. 이를 통하여 경쟁 서비스에 대하여 DMB 서비스 포지셔닝(positioning)을 시도하였으며, DMB에 대한 홍보활동의 필요성, 콘텐츠에 대한 수용도, 사업자의 초기 시장진입 전략 등을 제안하였다.

• Journal of the Korean association of regional geographers
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• v.14 no.6
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• pp.718-735
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• 2008

Park-and- Rides are intermodal transfer facilities providing a staging location for travellers to transfer between transportation modes. They are an alternative to alleviate transportation problems such as traffic congestion and air pollution in metropolitan areas. Siting Park-and-Ride facilities belongs to a kind of multi-criteria spatial decision making problems being associated with a combination of various location factors. The purpose of this paper is to provide a method and procedure to evaluate the location suitability of Park-and-Ride facilities using GIS(Geographic Information Systems). Using GIS-based suitability analysis, land value, landuse, road accessibility, public transportation accessibility, possibility to intercept automobile trips, distance to activity center and competition with existing facilities were evaluated as location factors. The suitabilities of individual factors were combined to produce a composite map with a specific weight scheme. Then a given number of sites with high suitability score were selected as potential facility locations and their demand were evaluated based on a commutershed with parabolic shape. The suggested method and procedure will provide useful information in determining Park-and-Ride sites and designing their structure.

• Proceedings of the Korean Society for Information Management Conference
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• 2014.08a
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• pp.213-216
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• 2014

본 연구는 현재 공공도서관 비이용자이나 향후 이용할 가능성이 있는 잠재적 이용자의 공공도서관 비이용 원인이 무엇인지를 탐색하는 것을 목적으로 하며, 이를 위해 도서관 이용 중단자 및 비이용자 3명을 대상으로 한 심층면담의 내용을 분석하였다. 분석 결과, 잠재적 이용자들의 이용/비이용에 영향을 미치는 요인들로서 '동기', '도서관 지식', '만족', '접근성', '대용채널'의 5가지를 파악할 수 있었으며, 공공도서관에 대한 요구사항이 개선되었을 경우 이용할 의향이 있는 것으로 나타났다.

• Journal of the Korea Society of Computer and Information
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• v.5 no.3
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• pp.201-207
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• 2000

The digital economic is increased electronic commerce of firms in business environment This article propose on the study of cyber shopping mall in factor of apprehension. short summaries of this study are as follows, 1) the most important of factor's name is "Advertisement factor" 2) the second factor's name is "product factor" 3) so on.(reliability, price, purchase convenience) This 5 factor's is the most important of cyber shopping mall. The result of this study, cyber shopping mall have to enforced advertisement, sales force. The advertisement increased on apprehension of customer that purchased.omer that purchased.

• Proceedings of the KAIS Fall Conference
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• 2011.12a
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• pp.144-147
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• 2011

본 논문은 패밀리 레스토랑의 웹 사이트를 방문하는 사람들이 웹 사이트에서 느끼는 '즐거움, 정보활용성, 거래편리성, 잠재적 이익, 상호작용'에 구전효과가 어떤 영향을 미치는지, 그리고 '고객태도'와 '추천'에는 어떤 영향을 미치는지 파악하였다. 연구결과는 다음과 같다, 첫째, 즐거움, 정보활용성, 잠재적이익, 상호작용은 태도에 직접적인 영향을 미치고, 태도는 추천에 직접적인 영향을 미치는 것을 확인하였다. 그리고, 즐거움, 정보활용성, 잠재적 이익, 상호작용은 추천에 간접적인 영향을 미쳤다. 둘째, 거래 편리성은 태도와 추천에 유의한 영향을 주지 못했다. 거래 편리성은 직접 패밀리 레스토랑을 이용한 후에 느끼는 부분의 성격이 크다. 웹 사이트에서 제공하는 할인쿠폰이나, 다양한 이벤트 활용이 쉬운지를 판단하는 항목인 거래 편리성은 편리함이 태도 형성과 추천에 큰 요인은 아님을 보여준다. 마지막으로, 태도가 추천에 영향을 줄 때, 구전효과의 영향은 크지 않음을 보았다. 태도는 고객이 직접 웹 사이트를 충분히 활용하면서 패밀리 레스토랑의 서비스를 실제로 경험하며 직접 느끼는 것을 포함하기 때문에, 구전효과의 영향은 적은 것으로 보인다.