行政罰則의 現況과 그 定立基準에 關한 硏究

이세훈 서울대학교 1973 국내석사

여행예약애플리케이션의 기술준비, 서비스품질, 기술수용에 관한 연구

이세훈 경기대학교 대학원 2019 국내박사

According to a report by the Ministry of Science and ICT and Korea Internet Security Agency, 87 percent of Koreans aged three or older were using smartphones in 2017. However, the report is not simply about an increase in the use of mobile devices, which are one of the means of communication. The Korean Statistical Information Service's "Travel and Reservation Service Costs" shows that transactions for travel and reservation services online from 2014 to 2017 grew steadily from 8.3826 trillion won to 12.798.4 trillion won. What is more interesting is that in 2017, mobile transactions have surpassed traditional internet transactions. Such trend is expected to continue in view of the changes in platform surveyed by the Ministry of Science and ICT and the Korea Internet Security Agency. Some people make mobile purchases as it is in the data from the Korean Statistical Information Service, but some people are still reluctant to do so. According to a trends report by the Korea Information Society Development Institute, mobile payment continues to grow worldwide for various reasons, including the simplification of payment processors, but consumers are reluctant to use them due to inconveniences and concerns. Therefore, the aim of this research is to find out why people who use travel reservation or purchase applications use them, and why people who do not use them are reluctant to use them. To conduct the research above, the theoretical background has been examined through prospective studies, and to verify this, an empirical survey of the people who used travel reservation applications and those who did not was conducted. The purpose, method, and survey instructions were thoroughly explained to the surveyees through questionnaires and the survey was automatically answered and retrieved through the internet and mobile. 175 users of travel reservation applications (86 males and 89 females) and 167 non-users (85 males and 82 females) responded to the survey and 342 valid samples has therefore been acquired. To analyze the samples, the statistical program widely used in social science research, the SPSS, was used. The result from the empirical analysis are as follows: First, in the relation between technology readiness and technology acceptance for users of travel reservation applications, it was found that survey items referring to innovation, inconvenience and anxiety, except optimism, do not affect the perceived ease of use and perceived usefulness of technology acceptance. In contrast, most of the non-users of travel reservation applications turned out to be affected. This implies that optimism is the most important factor in technology acceptance of travel reservation application users; for non-users, overall items of technology readiness is important in technology acceptance. Such differences seem to have a significant influence on whether or not to use travel reservation applications. Second, the same results were found between technology readiness and behavior intention. Optimism was found to have influence over travel reservation application users on their purchase and consumption behavior as well as introducing the applications to another person. It is inferred to be the user's natural or learned optimism that indicates such behavior. For non-users, most of the items seem to affect them. Given these differences, it can be predicted that the existing users of travel reservation applications will continue to use them unless there are factors that impede their optimism. On the other hand, for non-users, ways to enhance positive factors related to optimism, innovation, and ways to reduce or eliminate negative factors such as inconvenience and anxiety, need to be devised in order to encourage non-users to use the applications. Third, the results show that the quality of system service and information service of travel reservation applications affect the behavior intentions; they are the repurchase and reuse rate, as well as the act of encouraging others to use the application. The quality of customer service may not have a significant influence on the behavior intention of travelers, but on the other hand, it can be inferred that travelers do not care about the contents of customer service when using travel reservation applications. This research was able to draw conclusions as examined above, but the results have several limitations. First, the service quality of travel reservation applications need to be studied more to for a greater variety of sub-factors of travel application services in preparation for the recently expanding O2O market. Second, general technology readiness may be meaningful, but it could be even better if the items of technology readiness for the use of travel reservation applications are derived and studied together. Third, since the general study on travel reservation applications were not limited to certain applications, the respondents of the survey are expected to have been affected by the experience of using different applications and personal travel experiences. The study will be more fruitful if research is conducted in a specific environment under control, or with a certain travel reservation application. Through these follow-up studies, a number of factors of service quality, regarding the use of travel reservation applications can be derived. Also, more diverse, meaningful, theoretical and practical implications that draw the attention of non-users can be derived. 과학기술정보통신부와 한국인터넷진흥원의 발표에 따르면 2017년 만 3세 이상 우리나라 인구의 87%가 스마트폰을 이용하는 것으로 나타났다. 그러나 이는 단순히 통신수단 중 하나인 모바일 기기의 사용량이 증가한 것이 아니다. 국가 통계 포털의 “여행 및 예약서비스 거래액”을 살펴보면 2014년부터 2017년 온라인을 통한 여행 및 예약서비스 거래액은 8조 3,826억 원에서 12조 7,984억 원으로 꾸준히 성장한 것을 알 수 있다. 더 흥미로운 사실은 2017년에 모바일을 통한 거래액이 기존의 인터넷을 통한 거래액을 넘어섰다는 것이다. 이러한 추세는 과학기술정보통신부와 한국인터넷진흥원이 조사한 플랫폼의 변화를 보면 지속될 것으로 예상된다. 이렇게 국가통계의 자료에서처럼 모바일을 통한 구매를 하는 사람도 있지만 여전히 구매를 꺼리는 사람도 있다. 정보통신정책연구원의 동향보고서에 따르면 결제 프로세서의 단순화를 비롯한 여러 이유로 전 세계의 모바일을 통한 결제가 계속해서 성장하는 추세이지만 소비자들이 불편과 우려로 사용을 꺼리는 경우도 있음이 나타났다고 한다. 그러므로 이 연구를 통해 여행예약이나 구매 애플리케이션을 사용하는 사람은 무엇 때문에 사용을 하고 구매를 하는지 사용하지 않는 사람은 무엇 때문에 사용을 꺼리는지에 대해 알아보고자 하였다. 이와 같은 연구를 위하여 선행연구를 통해 이론적 배경을 검토하였으며 이를 검증하기 위하여 여행예약애플리케이션을 사용했던 사람과 사용하지 않은 사람을 구분하여 이들을 대상으로 실증조사를 실시하였다. 연구를 위하여 조사대상자에게 조사의 목적, 방법 그리고 조사요령을 설문지를 통하여 충분히 설명하였으며 온라인과 모바일 인터넷을 통하여 자동으로 응답하여 회수하는 방법으로 실시하였다. 여행예약애플리케이션 사용자 175명(남 86명, 여 89명) 여행예약애플리케이션 비사용자 167명(남 85명, 여 82명)의 응답을 받아 총 342부의 유효한 표본을 얻었다. 이를 분석하기 위하여 사회과학연구에서 널리 사용되는 SPSS 통계프로그램을 사용하여 분석하였다. 실증분석을 통하여 나타난 결과는 다음과 같다. 첫째, 기술준비도와 기술수용의 관계에서 여행예약애플리케이션 사용자의 경우 기술준비도의 낙관성을 제외한 나머지 혁신성, 불편, 불안 항목이 기술수용의 인지된 사용용이성과 인지된 유용성에 영향을 미치지 못하는 것으로 나타났다. 이와 대조적으로 여행예약애플리케이션 비사용자의 경우 대부분 영향을 미치는 것으로 나타났다. 이를 통해 기술을 수용하는데 여행예약애플리케이션 사용자들의 경우에는 낙관성이 가장 중요한 요소로 작용한다는 것을 알 수 있었고 여행예약애플리케이션 비사용자들의 경우에는 기술을 수용함에 있어서 기술준비도의 전반적 항목들이 중요한 역할을 하는 것을 알 수 있었다. 이와 같은 차이가 여행예약애플리케이션 사용 여부에 중요한 영향을 미치는 것으로 보인다. 둘째, 기술준비도와 행동의도에서도 마찬가지의 결과가 나왔다. 여행예약애플리케이션을 사용하는 여행소비자의 구매와 소비, 구전의도에 낙관성이 영향을 미치는 것으로 나타났다. 이는 사용자의 천성적 혹은 학습된 낙관성이 이런 행동을 나타내는 것으로 유추된다. 여행예약애플리케이션 비사용자의 경우에는 일부 항목을 제외하고는 대부분 영향을 미치는 것으로 나타났다. 이런 차이를 보았을 때 기존의 여행예약애플리케이션 이용자의 경우 그들이 가진 낙관성을 저해하는 요소들이 발생하지 않는다면 계속해서 이용할 것으로 예측할 수 있다. 또한 여행예약애플리케이션을 사용하지 않는 비사용자의 경우 긍정적인 낙관성, 혁신성 요소를 향상시킬 수 있는 방법과 부정적인 불편, 불안 요소를 감소하거나 제거하는 방법을 강구하여 이들이 이러한 여행예약애플리케이션을 사용할 수 있도록 유도할 방법을 찾아야 할 것으로 보인다. 셋째, 여행예약애플리케이션의 서비스품질에서 시스템 서비스품질과 정보 서비스품질은 행동의도인 재구매의도, 재사용의도, 구전의도에 각각 영향을 미치는 것으로 결과가 나왔다. 고객 서비스품질은 여행자의 행동의도에 큰 영향을 미치지 못한다는 것일 수도 있겠지만 다른 한편으로는 여행예약애플리케이션 서비스를 사용함에 있어서 고객 서비스에 대한 내용을 크게 개의치 않는다는 것일 수도 있다고 유추해 볼 수 있겠다. 본 연구는 앞서 살펴본 바와 같이 결론을 도출할 수 있었으나 그 결과에 대한 몇 가지 한계점이 존재한다. 첫째, 여행예약애플리케이션의 서비스품질은 최근 확대되고 있는 O2O 시장에 대한 대비 차원에서도 더 다양한 여행애플리케이션 서비스의 하위요인에 대한 연구가 필요해 보인다. 둘째, 일반적인 기술준비도도 의미가 있겠지만 여행예약애플리케이션 사용에 관한 기술준비도 항목을 도출하여 함께 연구한다면 더 의미있는 연구가 될 것으로 사료된다. 셋째, 여행예약애플리케이션의 보편적인 연구를 위하여 특정 애플리케이션을 한정짓지 않았기 때문에 응답자가 서로 다른 애플리케이션 서비스를 경험하거나 여행경험을 회상하여 설문에 임하여서 응답하였기 떄문에 설문에 영향을 미쳤을 것이라 예상된다. 여행예약애플리케이션을 이용하는데 있어 특정 애플리케이션이나 특정된 상황으로 통제된 환경별로 조사한다면 의미있는 연구가 나올 것이라 기대된다. 이러한 후속연구를 통해 여행예약애플리케이션의 서비스품질에 관해 여러 요인을 도출하고 비사용자의 사용을 이끌어 낼 더욱 다양하고 의미있는 이론적이고 실무적인 시사점이 도출될 수 있을 것이라 생각된다.

한국 방위산업의 시장구조, 행위, 성과에 관한 연구 : 경쟁정책 도입을 중심으로

이세훈 광운대학교 대학원 2023 국내박사

This study analyzed the effects of competition policy implemented on the defense industry after the “Specialization and Systematization Legislations" were scraped at the end of 2008 based on the Structure-Conduct-Performance(SCP) analytical model of the industrial organization theory. With a focus on the implications of “Multiple vendors for one material designated policy” in 2009, “Private sector-led R&D expansion” in 2011, and “Competitive Prototyping” in 2012, a theoretical framework for future policy planning was provided by comparing the key indices from 2006 to 2009, 2006 to 2009, 2011 to 2014, and 2017 to 2018 to identify the relations of the market structure, conduct, and performance. To be specific, leading studies were examined from the perspective of the structural sophistication and promoting exports of the defense industry, and further, the theories of the SCP model was studied in the defense industry as well as other industries across the board and the empirical data was reviewed to design a SCP analysis model that could be of great use in the industrial analysis of the Korean defense industry. The key findings of this study are as follows. First, as a result of analyzing the market structure, the entry barrier was lowered after the competition policy was implemented, leading to an increase of the number of companies in the defense industry, and the market dominance by a handful of companies was weakened with the growing number of competitors. In addition, the gradually declining concentration ratio such as CR and HHI indices indicated that the defense industry is shifting towards a competitive market structure, resulting in intensified market competition. Second, the market conduct in a competitive market structure provided more incentives, contributing to strengthening competitive edge and expanding R&D investments in the defense industry. In particular, it was found that the size of the R&D investment can vary by the market structure and the government policy, and the intensifying market competition could result in stronger efforts of individual companies in R&D for technological development and enhanced competitiveness. Third, the profitability as an indication of market performance appeared to be subdued to some extent as of 2013, however, it was confirmed that the competition policy had a positive impact on the economic performance of the industry due to the increase in sales and added value per employee, an indication of growth potential, and the growth of sales and exports, which represents productivity. With more competitive market structure, the market performance improved following increasing sales and productivity and the size of the industry itself was expanded due to more robust dynamics of businesses, thereby contributing to the qualitative and quantitative growth of the defense industry. To recap, with the defense industry gradually shifting from a monopoly to competitive system after the competition policy was implemented, the competition among the companies intensified, and their increasing profit-seeking and investment activities led to an increase in profitability and economic performance. As a result, this study concluded that the market structure, conduct, and performance can be varied by the government's competition policy, and that minimizing regulatory policies that hamper the growth of the defense industry is effective in strengthening global competitiveness. 본 연구는 산업조직론의 SCP(Structure-Conduct-Performance) 분석모형에 기반하여 2008년 말 ‘전문화‧계열화 제도’가 폐지된 이후 시행된 경쟁정책이 방위산업에 미친 영향을 분석하였다. 이에, 2009년 ‘1물자-다업체 지정제도’, 2011년 ‘업체주관 연구개발 확대’, 2012년 ‘복수연구개발제도’ 등이 방위산업에 어떠한 영향을 미쳤는지 초점을 두고, 2006년에서 2009년, 2011년에서 2014년, 2017년에서 2018년의 주요 지표들을 비교하여 방위산업의 시장구조, 행위 및 성과에 대한 관계 정립을 통해 추후 정책 설정을 위한 이론적 틀을 제공하였다. 이에, 방위산업 구조고도화, 수출산업화라는 관점에서 관련 선행연구를 살펴보았으며, 이와 함께, 방위산업 및 이외 산업에서 SCP 분석모형에 대한 전반적인 이론을 고찰하고, 실증적인 자료를 검토하여 한국 방위산업의 산업분석에 유용한 SCP 분석모형을 설계하였다. 주요 연구결과를 요약하면 다음과 같다. 첫째, 시장구조를 분석한 결과, 경쟁정책 시행 이후 진입장벽이 낮아져 방산업체의 수가 증가하였으며, 경쟁업체의 수가 증가하면서 소수업체에 의한 시장지배력이 약화되는 것을 확인할 수 있었다. 또한, CR 및 HHI 지수인 시장집중률이 점차 감소하여 경쟁정책 시행 이후 방위산업 시장의 경쟁이 심화되는 등 경쟁적인 시장구조로 변화하고 있음을 확인하였다. 둘째, 시장행위는 시장구조가 경쟁적으로 형성되었을 때 보다 많은 유인이 작용하여 국방연구개발 투자 증대 및 경쟁력 강화에 영향을 끼침을 확인할 수 있었다. 특히, 연구개발 투자의 규모는 시장구조 및 정부의 정책에 따라 변동될 수 있으며, 시장의 경쟁이 심화될수록 개별 방산업체들의 기술개발에 대한 연구개발 유인 및 경쟁력 제고의 행위로 이어짐을 알 수 있었다. 셋째, 시장성과를 나타내는 수익성은 2013년을 기점으로 다소 부침을 보였으나, 성장성인 매출액 및 수출액, 생산성으로 대표되는 종업원 1인당 매출액 및 부가가치의 증대로 경쟁정책 이후 산업 차원의 경제적 성과에 긍정적인 영향을 끼쳤음을 확인할 수 있었다. 이는 시장구조가 경쟁적으로 전환됨에 따라 매출액 증대 및 생산성 향상 등에 영향을 미쳐 시장성과의 개선이 이루어지며, 이와 더불어 업체의 역동성을 증가시켜 산업 자체의 규모가 확대되어 결국 방위산업의 양적‧질적 성장에 기여함을 알 수 있었다. 이처럼 경쟁정책 이후 방위산업 시장이 점차 독점체제에서 경쟁체제로 전환됨에 따라 방산업체간 경쟁이 심화되고, 방산업체의 이윤추구 및 투자 활동이 증대되면서 수익성 증가 및 경제적 성과개선으로 이어짐을 확인할 수 있었다. 이로써, 시장구조, 행위 및 성과는 정부의 경쟁정책에 따라 변화할 수 있으며, 방위산업 발전을 저해하는 규제정책을 최소화하는 것이 글로벌 경쟁력 강화 차원에서 효과적이라는 결론을 도출하였다.

地域社會文化와 地域社會 正體性 形成關係 硏究

이세훈 韓南大學校 社會文化科學大學院 2004 국내석사

First of all, about the motive and method for question to be presented, in 21C, the age of local decentratization of authority comes to our nation. It means that age which we have independently to lead the local self-govering culture of local society is changing. According to the flow of age, we need to investigate the identity of culture of community. Here, writer wants to study about the points, what kind of shaped culture is it, and what kind of senses on the foundation is it in which we live. Also, the identity which local society has been endured the changes of historical continuity and discontinuity. In tradition, folk-ways and tale of local society have traditional senses and the oriental ideal system. There are traditional folk-ways such like Ge( from the accient time, mutual cooperative group which come down in our nation), Doore( local cooperative group ), or Hyang-Do( good custom in local area) and local music. In such kinds of culture of local society have improtant communality in them as inhabitants' joint senses. The communality had a role prescribing the closing and openness of local society so that about the point which kinds of direction was desirable is ultimate result of this thesis and object to study. Second of all, this is about the life of food, clothing and shelter in culture. All the cultures begin from the area of food, clothing and shelter, and they prescribe our practical mode of living. The human which Aristotle had declared was just" the social creature." The social creature means, sometimes, that they give and take each other their food, clothing and shelter to solve. Sharing their food, clothing and shelter for solution, they need mutual communication, and in which their communication has been effected reasonably is formed conscious structure prescribing their culture. Third, it is about the traditional culture and traditional concious structure. Our traditional cultured is confucian culture. The confucian culture is oriental culture and ideal system formed through interchange without ceasing with china. On these foundation, in our local culture, such a chinese culture or metaphsical conscious structure is implied. For example, Yulkok the great confucianist in our country saw that all the space, nature and human being existed being linked with reason and vitality in mystery. So to speak, he said, "reason and vitality cannot be seperated existentially. Of course, such a thinking tradition appears in the area of spirit and material unification in Tangun myth, as distinctive quality of korean idea, and Wonhyo's idea of peace and argument. Forth, about the desirable communality of local culture, the culture of local society is facing crisis by means of whole global economic flow in the name of worldlization. This become critical senses, if we don't follow the flow of worldwide culture, which can be lost the life as culture. But national joint senses is based on our traditional culture as our history and tradition showed. Such a common senses resisted against the flow of undesirable alien influence, and had the united senses. In such standpoint, what we make to revive communality which the culture of local society had is just shortcut which secure our cultural independency. After all, as writer belives what we promote various cultures and events of local society, and support systematically administration and residents' positive participation, would make the way to go to 21C. Ideal society should become the society which is thinking highly of local quality, and recognizing diversity of culture. Then, forming desirable communality, we can need possessing of feeling sympathy together with local residents' common concious structure. Therefore, such a activity of creative culture never can be seperated from historical back ground and tradition which local society had. In transmitting valuable culture from generation to generation, new formation of communality is possible as we bring conscious structure into relief, which can be showed modernly in times' situations.

Effect of a combination of Korean red ginseng extract and probiotics on the prevention of atopic dermatitis in a murine model

이세훈 가톨릭대학교 대학원 2022 국내박사

초대교회 공동체의 ‘나눔과 공유’ 모티프에 대한 내러티브 읽기 : 사도행전 2:42-45 및 4:32-35을 중심으로

이세훈 서울신학대학교 신학대학원 2015 국내석사

This study set out to investigate how God's revelations were revealed and how the church responded to them in the historical process and background of the early Jerusalem church community based on facts that were as objective as possible, thus helping today's churches find their directions right. Based on that problematic consciousness, the study examined the communal character of the early Jerusalem church in the Acts of Apostles 2:42-45 and 4:32-35 and focused on how to apply and link it to today's churches after 2,000 years since then. It tried to find the messages of the texts in the structure of a story with a focus on the Yumusangtong of the early church community or the "division and sharing" motif. The study examined them with a focus on the "division and sharing" motif in the overall narrative of Luke Acts and progressed with a focus on a variety of literature on the early church community and many introduction books and papers on the history, politics, economy, and social backgrounds of Israel. It also looked into the annotation works of the texts and the "division and sharing" motif in the Luke Acts under the philosophical and theological background of Greece and Rome those days. That is, it began by asking how the saints of the early church practiced sharing, living in the world and whether that kind of life could be actually existent. To conclude, there was actually the community of true division and sharing among the saints of the early church, and it existed within the belief in the Resurrection of Jesus Christ and the ministry of the Holy Spirit. In short, the study identified the principles that made those values of division and sharing possible as follows: first, it was voluntary and consistent sharing with the Holy Spirit as the subject; second, it was continuous and repetitive sharing that the early church would frequently be devoted to whenever it was needed; and finally, the Jerusalem community did not have a sharing perspective of possession and non-possession for the principle of property ownership renouncement.

트랜스포메이션 디자인을 통한 시공간적 의미연구 : 척 호버만의 트랜스포메이션 시스템을 바탕으로

이세훈 국민대학교 테크노디자인전문대학원 2020 국내석사

현시대에는 실제하는 사물보다 이미지적인 개념에 집중하며 새로운 가치를 갈구한다. 그중에서 트랜스포메이션 디자인(Transformation Design)이라는 영역은 인간의 시각적인 만족과 동시에 감각을 자극함으로써 사물을 바라보는 새로운 관점을 경험하게 한다는 점에서 중요한 의미가 있다. 본 연구의 목적은 발명가이자 하버드 건축대학 교수인 척 호버만(Chuck Hoberman)의 트랜스포메이션(Transformation)시스템을 분석하고 그의 작품이 시공간적으로 어떠한 의미를 갖고 있는지에 대한 연구이다. 척 호버만의 트랜스포메이션 시스템 이론과 개념 등, 디자인 시 필수적 디자인 요소와 디자인원리를 분석하고 시스템 별로 분리된 다양한 디자인 사례들을 연구한 결과는 다음과 같다. 척 호버만의 트랜스포메이션 디자인은 오브젝트 내부에서 일어나는 자극으로 인하여 부드러운 연속적 변형과정을 거쳐 완벽한 3차원의 형태변형을 이룬다. 이러한 변형은 변형 이전의 원상태로 되돌릴 수 있어야 하며 모든 과정을 반복 할 수 있어야 한다. 척 호버만의 트랜스포메이션 오브젝트들은 ‘키네틱 빌딩 블록’으로 정의된 많은 부품들의 조합으로 전체를 구성하고 있으며 구조와 매커니즘의 조화로 기본 지오메트리에 기초한 움직임을 보여준다. 척 호버만의 사례들은 크게 시져 시스템(Scissor System)과 어셈블리 시스템(Assembly System)으로 나눌 수 있으며 인지적 관점에서 시공간적 의미를 도출 한 결과, 관찰자로 하여금 실시간에 어긋나는 경험을 하도록 유도하여 축약된 시간성을 경험하게 하였으며, 모호한 경계들의 변화로 서로 다른 위치에 대한 동시적인 시지각의 경험과 반복적인 운동을 통해 남겨지는 기억적 잔상을 통해 서로 다른 층위를 경험함으로써 시공간의 개념을 넘나들게 하였다. Nowadays, we focus on the concept of the images rather than real things and pursuits new values. Among them, the area of ​​`transformation design' has important value by enabling us to experience a new perspective of seeing through stimulating our senses as well as providing visual satisfaction. The purpose of the study is to analyze Chuck Hoberman's transformation system, an inventor and professor at the Harvard Graduate School of Design, and to study the meaning of his works in time and space. Analysis of essential design principles in Chuck Hoberman's theory and concept of the transformation system are as follows. Chuck Hoberman's transformation design achieves perfect three-dimensional deformation through a smooth continuous deformation process due to the stimulus occurring inside the object. These deformations should be able to be reverted to their original state before deformation and could be repeated throughout the whole process. Chuck Hoberman's transformation objects organize the whole from the combination of many parts, defined as 'kinetic building blocks', and show movement based on basic geometry in the combination of structure and mechanism. Chuck Hoberman's design can be divided into 'Scissor System' and 'Assembly System'. By deriving the spatio-temporal meaning from the cognitive point of view, these systems induce the observer's real-time experience and generate different accelerations from the actual time. As a result, the system blurs the boundaries by enabling the spaces of different positions can be perceived at a glance. Also, the transformation object, which performs repetitive movements, leaves the afterimages in memory as it moves, giving the experience of real and virtual overlapping.

Magniber v2, Ragnar Locker, Donut 랜섬웨어에 대한 복호화 연구 및 암호키 검증 방안

이세훈 국민대학교 일반대학원 2021 국내석사

랜섬웨어는 파일을 암호화하여 피해자에게 금전을 요구하는 악성코드다. 하드웨어의 발전으로 인해 빠른 암호화가 가능해진 점, 암호화폐의 등장으로 인해 범죄자 추적이 불가해진 점 등의 이유로 랜섬웨어가 사이버 공격에서 높은 비중을 차지하고 있다. 최근 국내 기업을 대상으로 사이버 공격에서 랜섬웨어가 절반 이상 차지할 정도로 높은 비중을 가지고 있다. 랜섬웨어는 기업이나 기관만 아니라 개인에게도 큰 피해를 준다. 따라서, 랜섬웨어의 피해를 막기 위한 대응책이 필요하다. 랜섬웨어에 사용된 암호 시스템은 AES나 RSA와 같은 현대 암호를 기반으로 설계되었지만 잘못된 설계를 했다면 암호 취약점이 발생할 수 있다. 따라서, 랜섬웨어의 암호 시스템을 상세 분석하여 취약점을 찾아 취약점을 활용한 복호화 방안을 마련해야 한다. 또한, 취약점을 활용해 파일 암호화에 사용된 암호키를 복구하더라도, 복구된 암호키가 실제 감염 당시 사용된 암호키인지 확인하는 검증 과정이 필요하다. 본 논문에서는 랜섬웨어 3종 Magniber v2, Ragnar Locker, Donut에 대해 역공학하여 랜섬웨어의 암호 시스템을 상세 분석하였다. 상세분석한 결과를 토대로, 복호화 가능성에 대해 연구하였다. 분석한 3종은 모두 복호화가 가능하였으며 각 랜섬웨어에 대한 복호화 방안을 제시하였다. 그리고 NIST SP 800-22의 통계적 난수성 검정과 블록 암호 패딩 검증 방법을 활용하여 복구된 암호키의 검증 과정 방안을 제안하고 실험을 진행하여 정확성을 평가하였다. 제안한 방법은 Magniber v2의 암호키 복구 알고리즘에 적용되었으며, Magniber v2의 암호키 복구 실험을 통해 현실 가능한 시간 내에 암호키 복구가 가능함을 보였다. Ransomware is a malware that ransom money from victims by encrypting one’s files. Ransomware occupies a high proportion of cyber attacks due to the fact that rapid encryption is possible as the advancement of hardware and that criminal tracking has become impossible as the advent of cryptocurrencies. Recently, it has a high proportion of cyber attacks targeting domestic companies, accounting for more than half. Since ransomware causes great damage to individuals as well as companies and organizations, countermeasures are needed to prevent damage from ransomware. Although, The encryption systems in ransomware is designed based on modern cryptography such as AES and RSA, it causes vulnerability when wrong designed it. Therefore, it is necessary to analyze the ransomware's encryption system in detail to find vulnerabilities and to prepare a decryption method using the vulnerabilities. Also, Even if the encryption key used for file is restored using the vulnerability, a verification process is required to verify whether the recovered encryption key is right or not. In this paper, we analyzed encryption system in Magniber v2, Ragnar Locker and Donut ransomware in detail by reverse-engineering. Based on our results of detailed analysis, we studied possibility of decryption. All three of analysis were able to be decrypted, and decryption methods for each ransomware were suggested. In addition, using the statistical randomness test of NIST SP 800-22 and the block cipher padding, a verification method for the recovered encryption key was proposed, and the accuracy was evaluated by conducting an experiment. Our proposal is applied for encryption keys recovery algorithm of Magniber v2, The key recovery of experiment showed that it is possible to recover the encryption key within a practical time.

저가항공사의 e서비스품질, 만족과 구매의도 연구 : 구전정보 조절효과 중심으로

이세훈 경기대학교 일반대학원 2011 국내석사

본 연구의 목적은 인터넷 콘텐츠사용자를 중심으로 저가항공사 웹사이트의 e서비스품질에 따라 고객만족과 구매의도와의 관계를 분석하고 구전정보의 조절효과를 검증하는데 있다. 이와 같은 연구의 목적을 보다 구체적으로 살펴보면 다음과 같다. 급속하게 성장하는 e-비즈니스 환경 하에서 저가항공사 웹사이트의 e서비스의 품질이 고객만족과 구매의도에 미치는 영향 관계를 분석하는데 그 의의를 두고 있다. 연구결과를 바탕으로 학계는 물론 웹 기반의 저가항공사 마케팅 전략 수립의 기초 자료를 제공하고자 한다. 우선 선행연구를 배경으로 한 이론적 배경에서는 e서비스품질의 구성요인을 파악하는 문제와 함께 e서비스품질의 구성요인과 고객만족간의 관계, e서비스품질과 구매의도 간의 관계, 그리고 고객만족과 구매의도간의 관계, 구전정보의 조절효과를 파악하는 방향으로 문제가 제기되었다. 이는 이론적 배경에서 e서비스에 대한 포괄적인 이해와 함께 기존에 연구되어진 고객만족 및 구매의도에 대한 여러 정의 및 연구방법을 살펴보고 이러한 정의나 개념들이 어떻게 적용되어왔는지를 살펴본다. 그리고 구전정보의 정의에 대해서도 살펴보았다. 실증분석에서 연구의 가설은 앞서 살펴본 선행연구를 토대로 하여 설정하였다. 이와 같은 가설은 각 구성요인간의 관계를 파악하기 위한 가설의 설정과 검정을 실시한다. 위의 연구 목적에 따라 설정한 가설들은 SPSS를 이용하여 실증적 검토와 검증을 하였다. 위의 과정으로 선행연구의 검토를 통해 도출된 e서비스품질의 구성요인들과 고객만족, e서비스품질과 구매의도, 고객만족과 구매의도, 구전정보의 조절효과 등에 대한 모형을 저가항공사 웹사이트 사용자들을 대상으로 수집된 자료를 이용하여 적용함으로써 그 적합성을 검토하고 가설을 검정하여 e서비스 및 만족과 구매의도 그리고 구전정보의 조절효과에 관련된 전략적 방향을 제시하였다. The purpose of this study is to analyze the relation among e-service quality of low-price airline website, customer satisfaction and purchase intention and to verify the moderation effect of word-of-mouth information focusing on the Internet contents users. The following is the purpose of this study in more details. The significance of this study is in analyzing the relation of effect of e-service quality of low-price airline website on customer satisfaction and purchase intention in the rapidly growing e-business environment. The purpose is to provide basic information on the establishment of web-based market strategies for low-price airlines as well as for the academic circle based on the study result. First of all, in the theoretical background based on preceding studies, the issues were presented in the direction of examining the relation between the constitutional elements of e-service quality and customer satisfaction, relation between e-service quality and purchase intention, relation between customer satisfaction and purchase intention and examining the moderationling effect of word-of-mouth information, together with the issue of examining the constitutional elements of e-service quality. Together with the comprehensive understanding on e-service in the theoretical background, various definitions and study methods on customer satisfaction and purchase intention that have been previously studied will be examined as well as how these definitions or concepts have been applied. In addition, the definition of word-of-mouth information was examined. In the empirical analysis, the hypotheses of this study were set based on the preceding studies examined earlier. As for the hypotheses, the setting and verification of hypotheses are conducted to understand the relation between each constitutional element. The empirical review and verification were conducted for the hypotheses set according to the purpose of this study by using SPSSWIN. The model for the constitutional elements of e-service quality and customer satisfaction, e-service quality and purchase intention, customer satisfaction and purchase intention, moderation effect of shopping, etc. deduced through the review of preceding studies through the above process was applied by using the data collected from the users of low-price airline webiste to examine its relevancy and verify the hypotheses to present strategic direction of e-service & satisfaction, purchase intention and moderation effect of word-of-mouth information.

잡곡-피복작물 작부체계에서 잡초 발생과 작물 생장

이세훈 경상대학교 대학원 2011 국내석사

The study was conducted to evaluate the weed suppressing effects of two winter cover crops, hairy vetch and rye, in foxtail millet and sorghum fields in 2010. Crop growth and development and weed occurrences in the fields were examined to know the efficiency of proposed cropping system. In hairy vetch treated plot, heading of minor cereals occurred early. The heading date was earlier by 1 day and 2 days in sorghum and foxtail millet, respectively. However, rye treatment delayed heading by 12 days and 8 days in sorghum and foxtail millet, respectively. Besides the effect of cover crop on ear emergence of crops, the residues changed growth-related characteristics. Plant height, chlorophyll content and chlorophyll fluorescence of sorghum were increased in hairy vetch treatment by 46.4% 88.7% and 7.9%, respectively. In foxtail millet, the characteristics were also increased by 45.6%, 50.9% and 37.8%, respectively, as compared to control. Yields of sorghum and foxtail millet were increased by 105.1% and 135% as compared to control by hairy vetch treatment. However, the yields of cereal crops were decreased by rye cover crop treatment, the yields of sorghum and foxtail millet were decreased by 20.4% and 54.3%, respectively. Rye cover crop treatment inhibited crop growth suggesting nitrogen starvation in rye treated plots. In rye treatment, plant height, chlorophyll contents and chlorophyll fluorescence of sorghum was slightly decreased by 7.1%, 10.8% and 10.8%, respectively, as compared to control whereas the inhibitory effects were greater in foxtail millet. Plant height, chlorophyll content and chlorophyll fluorescence were increased in foxtail millet by 25.3%, 53% and 3.3%, respectively. The poor growth caused by N starvation was recovered by foliar application of urea. The yield of foxtail millet strongly was increased by 209% of the rye residue treatment without N foliar application. Weed suppressing effects of cover crops showed that rye cover crop was greater than hairy vetch cover crop. Weed occurrences based on weed number in hairy vetch and rye plots were reduced by 27% and 20 %, respectively. The smothering effect was weakened or disappeared after heading of crops. Weed number and dry weight in hairy vetch plot were increased by 159% and 55.2%, respectively, as compared to control. Rye cover crop also increased weed occurrence and growth. The number and dry weight of weeds were increased by 55.2% and 10.9%, respectively. The results implied that weed suppressing of cover crops could be reduced drastically after heading of crops. Dominant weed species observed in cover crop treated fields were Digitaria sanguinalis, Echinochloa crus-galli in hairy vetch plot and in rye plotSetaria viridis, Digitaria sanguinalis, Echinochloa crus-galli.