• Steel and Composite Structures
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• 제31권6호
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• pp.575-589
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• 2019

The main focus of this study is to numerically investigate the influence of strong earthquake and tsunami-induced wave impact on the response and behavior of a cable-stayed steel bridge with large caisson foundations, by assuming that the earthquake and the tsunami come from the same fault motion. For this purpose, a series of numerical simulations were carried out. First of all, the tsunami-induced flow speed, direction and tsunami height were determined by conducting a two-dimensional (2D) tsunami propagation analysis in a large area, and then these parameters obtained from tsunami propagation analysis were employed in a detailed three-dimensional (3D) fluid analysis to obtain tsunami-induced wave impact force. Furthermore, a fiber model, which is commonly used in the seismic analysis of steel bridge structures, was adopted considering material and geometric nonlinearity. The residual stresses induced by the earthquake were applied into the numerical model during the following finite element analysis as the initial stress state, in which the acquired tsunami forces were input to a whole bridge system. Based on the analytical results, it can be seen that the foundation sliding was not observed although the caisson foundation came floating slightly, and the damage arising during the earthquake did not expand when the tsunami-induced wave impact is applied to the steel bridge. It is concluded that the influence of tsunami-induced wave force is relatively small for such steel bridge with large caisson foundations. Besides, a numerical procedure is proposed for quantitatively estimating the accumulative damage induced by the earthquake and the tsunami in the whole bridge system with large caisson foundations.

• 한국전자거래학회지
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• 제23권3호
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• pp.85-109
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• 2018

정보통신 기술의 급격한 발전으로 인해 사람들은 디지털 콘텐츠의 불법복제를 보다 쉽고 빠르게 할 수 있게 되었다. 이에 따라 왜 사람들이 불법복제 행위를 하는가에 대한 많은 연구가 이루어져 왔다. 그러나 아직까지 불법복제 행위에 대한 체계적이고 통합적인 연구는 거의 이루어지지 않고 있다. 본 연구는 계획된 행위이론, 규범활성화 모형, 습관 등을 통합함으로써 기존 연구의 한계를 극복하고자 하였다. 이러한 목적을 달성하기 위해 태도, 개인규범, 습관 등이 불법복제 행위의도에 미치는 영향을 설명하는 9개의 가설을 수립하고 337명으로부터 수집한 자료를 통해 이를 검증하였다. 분석한 결과 태도, 지각된 행위통제, 개인규범, 습관은 불법복제 행위의도에 유의한 영향을 미치는 것으로 나타났다. 반면 주관적 규범은 행위의도에 직접적인 영향을 미치는 것이 아니라 개인규범을 통해 행위의도에 간접적인 영향을 미치지 않는 것으로 나타났다. 나아가 습관은 태도에도 유의한 영향을 미치는 것으로 나타났다. 본 연구는 태도, 개인규범, 습관은 불법복제 행위의도 간의 관계를 파악함으로써 기존 연구의 확장에 기여하였다는 점에서 그 의의가 있다.

• 융합보안논문지
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• 제19권2호
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• pp.39-46
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• 2019

최근 피싱(Phishing)과 같은 새로운 유형의 악성코드를 이용한 사회공학 공격이 빈번해짐에 따라 정보보안 사고가 점차 고도화되고 있다. 조직에서는 정보보안 사고를 예방하기 위하여 다양한 노력을 하고 있지만 대부분 기술적 보안솔루션에 의존하는 경향이 있다. 그럼에도 불구하고 모든 보안사고를 완벽하게 예방할 수 없다. 최근에는 보안기술 기반 정보보안 접근방법의 한계를 극복하기 위하여 새로운 접근방법인 인간 중심 보안에 대한 관심이 높아지고 있다. 이러한 노력의 일환으로 일부 연구자들은 인간의 실제적 행동을 이해하고 그 행동에 따른 결과를 규명하는 행동경제학을 정보보안 분야에 접목시키고 있다. 본 연구는 행동경제학의 개념과 방법을 정보보안에 적용한 최근의 연구 흐름을 파악하는 동향 분석 연구로서, 141개의 관련 논문을 대상으로 연구 추세, 연구 주제, 연구방법론 등을 분석하였다. 분석 결과, 행동경제학의 개념과 아이디어를 '운영 보안' 분야에 적용한 실증연구가 대다수이며, 향후 폭넓은 연구 주제 선정과 문헌연구를 통해 실제로 사람의 행동을 바꾸는 문제에 행동 경제학을 적용하여 프레임워크 정립, 영향 요인을 식별하는 연구가 수행되어야 한다.

• 한국항해항만학회:학술대회논문집
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• 한국항해항만학회 2023년도 추계학술대회
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• pp.122-123
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• 2023

중대재해처벌법이 시행된 지 약 1년 7개월의 시간이 흐른 상황에서 해당법의 정의 및 정책적 연구는 다수 진행되었으나 물류산업 현장에 미치는 영향 연구는 거의 진행된 것이 없는 실정이다. 특히 완성차 물류 내 PDI(PRS) 공정에 대한 연구 자체도 턱없이 부족한 상황‥‥‥ (중략) ‥‥‥. 정부는 중대재해처벌법을 통해 처벌의 범위를 확대하고 안전관리 체계의 고도화를 기대하고 있으나 실제 2022년 고용노동부에서 발행한 산업재해 자료를 확인하면 2021년 대비 산업재해 건수 및 비율은 증가

• 정보처리학회논문지:컴퓨터 및 통신 시스템
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• 제13권1호
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• pp.10-20
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• 2024

매년 증가하는 온라인 상거래 시장과, 점차 다양해지는 상품과 콘텐츠로 인해 사용자들은 선택 과정에 어려움을 느낀다. 이에 여러 기업들은 온라인 쇼핑몰에서 사용자가 선호할 상품을 선별하여 제공하기 위해 추천 시스템에 대한 지속적인 연구를 진행하고 있다. 대다수의 추천 시스템 연구에서는 비교적 획득하기 쉬운 사용자의 이벤트 데이터를 기반하여 연구를 진행하였으나 한 종류의 사용자 행동만을 고려하기 때문에 사용자의 선호도를 파악하는 것에 오차가 발생한다. 이에 본 논문에서는 여러 종류의 사용자 행동 데이터의 상관관계를 고려하여 사용자의 선호도를 분석하는 추천 시스템을 제안한다. 제안하는 추천 시스템은 사용자의 사용자 행동 데이터의 상관관계를 분석하고 가중치를 생성하여 추천 모델을 학습한다. 실험에서는 기존 연구의 알고리즘과의 성능 비교를 통해 제안하는 시스템의 복잡도와 성능 향상을 확인하였다.

• 한국감성과학회:학술대회논문집
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• 한국감성과학회 2009년도 추계학술대회
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• pp.228-231
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• 2009

Recent studies have focused on human empathic behavior regarding to physical, cognitive, and emotional aspects. Especially empathy is considered as a multidisciplinary study because of its wide application. However, majority of the studies have been focusing on empathy induced by negative emotion and physical pain. As a result, the purpose of this study, based on Loggia et al. (2008), is to investigate if empathy could be induced by positive events, and consequently if the positive empathy could increase subjective value of reward. According to the result of experiment which involved eight participants, we could confirm the inducement of empathy by positive events significantly; its power is not so strong though. However there was no interaction between empathy type (positive and no empathy) and whether the target received the reward or not. But if we would recruit more participants and additionally analyze correlation among trait/empathic state questionnaire, subjective ratings of the reward and emotion of the target, we suggest that this study would be valuable in that it could expand the empathy studies.

• 유통과학연구
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• 제14권11호
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• pp.5-17
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• 2016

Purpose - The purpose of this study is to establish an conceptual framework to explain the mechanism of internationalization behavior being used by recently established retailer in emerging countries. Research design, data, and methodology - The existing research on retail internationalization has focused on global retailers located in advanced countries which have expanded their business to emerging countries. That is, "internationalization from top to bottom". However, recent years have seen a reversal in this trend, resulting in the emergence of "internationalization from bottom to top" by retailers based in emerging economies. In order to explore this reversal, this study attempts to develop an conceptual framework based on the theories of "innovation" and "retail format". Results - This study found an conceptual framework which was adopted both a concept of "formula" derived from the theory of retail format and a concept of "production and process innovation" derived from the theory of innovation as a core concept. Conclusions - The conceptual framework provided an understanding of how retailers in emerging countries have gained a competitive advantage over retail companies based in countries with advanced economies. It suggested that innovation that gave these companies a competitive edge was caused by competitive interaction which allowed them to expand to oversea markets.

• 통상정보연구
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• 제12권2호
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• pp.409-438
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• 2010

According to Sun Tzu's Art of War, "if you know yourself and your enemy you win hundred battles out of a hundred." This is also apply for international business field. International business negotiation will not be failed if you know counter party's behavior and understand their culture and customs. The cooperative approach is known as interest-based negotiation. Interest-based negotiation is particularly effective in a global business characterized by diversity. We often need to reach agreement with people who are different from us - culturally, ethnically, or economically. If we cannot get beyond the differences, they can create obstacles to agreement. To do this, we need to focus on the interests of the parties instead of on the parties' differences. Every culture has their own distinctive feature that the people from outside seems not understand but they must have the optimistic attitude which complies with. The purpose of this paper, from the point of view above, is to examine cultural differences that could make sure comparative advantage in business negotiation of the enterprises who eager to expand their market or to invest internationally. This paper especially shows cultural deferences among Korea, China and Japan in terms of business we must consider.

• 한국보건간호학회지
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• 제32권1호
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• pp.5-18
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• 2018

Purpose: We present improvements to the Korean home visiting healthcare service based on analysis of Korean home visiting healthcare services considering recent sociodemographic changes and demands for healthcare services. Methods: This is a review study in which the results are derived through a literature review and data analysis. We collected data through a search of electronic databases, Google Scholar, and governmental websites. Results: Changes in Korean home visiting healthcare services are classified into four stages: 'introduction (1990-2000)', 'pilot project (2003-2006)', 'nationwide expansion (2007-2012)', 'various types (2013-2018)'. Korean home visiting healthcare service based on public health centers has achieved outcomes such as improved health behavior and health management, increased health management ability, and establishment of comprehensive healthcare infrastructure. Conclusion: In the future, the demand for home visiting healthcare service will increase steadily because of deepening social polarization, rapid aging of the population, and increases in chronic diseases. To improve health management and health equity, we suggest that Korean home visiting healthcare service will expand to all the people as a core public health service. It is necessary to establish a management team for various types of home visiting healthcare service in the public health center.

• 한국주거학회논문집
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• 제21권6호
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• pp.99-108
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• 2010

This study investigated the environmental indices in environmental administration, and to presents how to develop a sustainable environmental evaluation index. The index should be used to evaluate composite plans in the environmental aspects as well as means for setting goals of basic plans for the environment and its management. Specifically, the goals of composite plans are to check environments and land use frame, and evaluate individual measures (public projects). Environment policies are required to be 'a policy creating a clean environment' from 'a policy of environment regulation'. For the organization of a basic framework of environment policies, five topics are needed to be considered, such as the clarification of the idea of environment, establishment of environment regulations, environment management plan, plan to support civilian's action, and local government's efforts for the global matters of environment. For the amenity environments, people should expand their environmental behavior based on their voluntary intentions in transformation of personal life styles, projects with less load on the environment, development of environmentally-friendly projects with consideration for their impact on the earth. This study suggests that they should put more efforts into the development and implementation of useful environmental indices which effectively analyse the regional character to protect the natural ecology and create an sustainable environment with wide coverage.