• Korean Journal of Logic
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• v.12 no.2
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• pp.89-114
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• 2009

We have many causal beliefs, and they play an important role in our decision making. Unlike evidential decision theory, causal decision theory claims that an account of rational choice must use causal beliefs to identify the considerations that make a choice rational. I claim that evidential decision theory is refuted by the original Newcomb's problem but not by the medical Newcomb problem. The latter is taken to be the best example to point out the weakness of evidential decision theory. However, by the explicit statement about causal relations, I argue that the medical Newcomb problem loses its strength in refuting evidential decision theory. With this argument, this paper clarifies the difference between evidential decision theory and causal decision theory.

• The Journal of the Korea Contents Association
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• v.7 no.2
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• pp.180-190
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• 2007

Recently investigation institutions have found the clue leading to solution of the problem by digital evidence. Digital medium is used extensively in real life. Accordingly, offender is leaving from traces of crime to digital form. But, Korea's digital evidence investigation is low level yet. Definite legislation about digital evidence is not readied in present our country. And professional investigation manpower about digital evidence is insufficient. These problem may have to be supplemented urgently. Systematic, technological supporting is required. Specialize and discussed digital evidence investigation's controversial point and capacity reinforcement way for efficient confrontation in cyber crime who is diversified gradually in text.

• Journal of Science Education
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• v.41 no.3
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• pp.426-446
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• 2017

The purpose of this study was to analyze undergraduate students' reasoning for solving a problem about a rock and investigate the roles and importance of critical evidence (CE) and critical resource models (CRMs) in abductive reasoning. Participants were 20 senior undergraduate students enrolled in a science major course in a university of education. They were asked to abductively infer geologic processes of sedimentary rocks having a lot of holes and represent them with models. Their reasoning were analyzed according to a scheme for modeling-based abductive reasoning. As a result, successful student reasoning was characterized by using a diversity of grains and lots of holes as CE, activating the sedimentary rock formation and weathering as CRMs, and combining the CRMs into a scientifically sound explanatory model (SSEM). By contrast, in the reasoning unsuccessful in proposing a SSEM, students activated the igneous rock (basalt) formation and deposition as resource models (RMs) based on the evidence of the holes in the rocks and diverse grains, respectively, and used the RMs to construct their own explanatory models (EMs). It was suggested that to construct SSEMs to solve earth scientific problems about rocks, students need to know what could be CE in a particular problem situation, take an integrative or systemic approach to a rock problem, use multiple RMs, and evaluate RMs or EMs in light of evidence.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.17 no.9
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• pp.2055-2062
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• 2013

Digital evidence which is the new form of evidence to crime makes little difference in value and function with existing evidences. As time goes on, digital evidence will be the important part of the collection and the admissibility of evidence. Usually a digital forensic investigator has to spend a lot of time in order to find clues related to the investigation among the huge amount of data extracted from one or more potential containers of evidence such as computer systems, storage media and devices. Therefore, these evidences need to be ranked and prioritized based on the importance of potential relevant evidence to decrease the investigate time. In this paper we propose a methodology which prioritizes order in which evidences are to be examined in order to help in selecting the right evidence for investigation. The proposed scheme is based on Fuzzy Multi-Criteria Decision Making, in which uncertain parameters such as evidence investigation duration, value of evidence and relation between evidence, and relation between the case and time are used in the decision process using the aggregation function in fuzzy set theory.

• The Korean Journal of Financial Management
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• v.12 no.1
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• pp.109-127
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• 1995

본 연구는 일본주가지수선물시장에서의 증거금 변화와 선물시장행태와의 관계를 알아보았다. 선물 증거금의 조정은 선물 가격변동성에 통계적으로 유의적일 정도의 영향을 미치지는 않았다. 또한 증거금의 조정이 선물거래활동(futures trading activity)에 미치는 영향을 실증분석하였는데, 일관성 있는 영향을 주지 못하는 것으로 나왔다. 이 결과에 의하면 증거금 규제는 선물시장에서의 가격 변동성 및 선물거래 활동을 통제하기 위한 적절한 도구는 아니라는 것을 의미한다. 또한 본 연구는 선물증거금의 조정을 야기시키는 변수가 무엇인가를 알아보았는데, 일본 주가지수선물시장에서의 네번의 증거금 조정중 두번의 경우에만 가격변동성이 중요한 변수로 작용했다. 또한 놀랍게도 선물증거금의 수준은 선물거래활동의 증가함수라는 결과를 보였다. 보편적인 관점에 의하면, 선물거래활동가 활성화되면 즉, 거래량과 미청산약정고가 증가하면 유동성이 증가하여 위험이 감소하게 되고 이는 곧 증거금의 수준을 낮추게 된다. 그러나 일본의 경우는 이러한 관점과 정반대의 결과를 보였다. 이러한 재미있는 결과의 세부적인 분석을 위해, 본 연구는 일본 증거금 규제기관이 증거금의 수준을 결정하는데 있어서 어떤 기준이 있다면 그 기준을 적용하는데 일관성을 가지는지를 살펴보았는데, 분석 결과는 일본의 증거금 규제당국이 일관성을 가지지 못하는 것으로 나왔다.

• Convergence Security Journal
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• v.15 no.3_2
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• pp.43-51
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• 2015

Many of crimes are solved by the report of people. Therefore, countries pay compensation to crime reporter. However, the current system of compensation is focused on the report of criminal fact and criminals arrest, so that there is no compensation on the providing evidence. On the other hand, since the current judicial system adopted the principle of trial by evidence, all the facts are made by the evidence. But it is impossible to obtain all the evidence only by law enforcement agencies. Therefore, it is necessary for people to report the evidence positively. So it is necessary to positively take advantages of smart phones, vehicle black boxes and cctvs. Various incentives such as compensation would be needed to require the evidence of smartphone or black box, cctv. In order to strengthen evidence report, it will be needed the legislation of crime report compensation, smartphone apps development including the provision of various incentives.

• 한국벤처창업학회:학술대회논문집
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• 2021.11a
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• pp.57-61
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• 2021

'증거기반 교육'은 개인적 경험이나 성공 사례, 그리고 전통적인 속설보다는 과학적 연구결과와 근거가 중심이 되는 교육이다. 증거기반 창업 교육은 기존 속설과 믿음, 단편적 성공 사례로 인해 고착된 인지 편향을 완화시켜 중립적인 시각을 견지할 수 있으며, 직관과 경험을 넘어 데이터와 연구 결과에 의해 의사결정을 하는 분석적 자질을 연마하는데 기여한다. 본 논문은 현재 국내의 증기기반 창업교육의 현주소를 명확히 파악하기 위하여 1999년부터 2021년 출판된 49권의 창업교육 대학 교재를 분석하였다. 구체적으로 모든 도서의 내용을 1)창업기초, 2)비즈니스모델, 3)마케팅계획, 4)재무계획, 5)운영계획, 6)창업유형, 7)절차 및 제도의 각 7가지 기준으로 구분하고, 각각 사례, 단순통계, 변인 통계, 선행 연구의 비중을 분석하였다. 분석결과 증거의 핵심인 선행연구의 비중은 전체 교재의 총 분량 중 11.25%를 차지하는 것으로 나타났다. 이는 Charlier(2011)의 MBA 교과목 대상으로 조사한 결과와 유사한 값이다.

• KSCI Review
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• v.14 no.2
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• pp.225-234
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• 2006

Computer Forensics functions by defending the effects and extracting the evidence of the side effects for production at the court. Has the faultlessness of the digital evidence been compromised during the investigation, a critical evidence may be denied or not even be presented at the trial. The presented monograph will deliberate the faultlessness-establishing chain procedures in disk forensics. system forensics, network forensics, mobile forensics and database forensics. Once the faultlessness is established by the methods proposed, the products of investigation will be adopted as a leading evidence. Moreover, the issues and alternatives in the reality of digital investigation are presented along with the actual computer forensics cases, hopefully contributing to the advances in computer digital forensics and the field research of information security.

• KSCI Review
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• v.15 no.1
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• pp.209-217
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• 2007

Korea's seas have the potentials of dispute against China or Japan due to the overlap of the territorial waters and EEZ. In case of marine accidents, the nature of the sea tends to eliminate much of the track, making it another hardship in evidence adoption in case of an international dispute along with the false entries of fishing vessels' journals. Marine Digital Forensics protects the functions of computers and IT appliance on vessels and extracts evidence of voyage and accidents to resolve international dispute. The digital evidence, if tampered with its integrity, may lead to the rejection to a critical claim or may even fail to make a case. As a solution, this thesis suggests Marine Digital Forensics as a way to extract evidence and prove a claim. This may be utilized as means of scientific investigation on sea as overseas exchange increases and the vessels digitalize, leading to a solution in international disputes that may occur in the future.

• Korean Journal of Child Studies
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• v.22 no.4
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• pp.331-341
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• 2001

This study is to investigate whether young Korean children have understanding for testing hypothesis. Questions explored are; First, do children have notions of testing hypothesis? Or, do they just produce an effect? Second, choosing between conflicting hypotheses, can children distinguish between experiments that would produce conclusive and inconclusive evidence? For this study, 15 first grade and 15 second grade children in elementary school located in Kyunggi area near Seoul participated. Data collection and analysis were based on interviews with children for two weeks. Children were presented two conflicted hypotheses to decide which one is correct through conclusive evidence and inconclusive evidence in the interview. The results showed that children(1st: 93.3%, 2nd: 81.3%) of each grade can distinguish between hypothesis and evidence to do testing hypothesis, and distinguish between conclusive and inconclusive evidence. In conclusion, most young children have understanding of testing hypothesis based on their familiar experiences, so it was possible for them to differentiate hypothesis from evidence in certain situations.