• Convergence Security Journal
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• v.14 no.6_2
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• pp.25-33
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• 2014

Arrest effect of CCTV for crime prevention is very important. CCTV for crime prevention is evaluated as the tools that act efficiently in terms of criminal arrest because CCTV is used later as evidence acting as the eyes of the distance in deserted place. Necessity of CCTV is increasing gradually because of the advantages that obtaining evidence and criminal found arrest is easy. But quality of CCTV is bad and Night Recording is poor. So it is necessary to improve quality of CCTV and Night Recording should be possible for using as crime clues and evidence. In addition, through integrated building control systems of CCTV for crime prevention and extension of retention period it is possible to easily obtain a evidence.

• Korean Security Journal
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• no.46
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• pp.189-216
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• 2016

In March 2015, the North Korean UAVs (Unmanned Aerial Vehicles) were found and countries around the world have actively developed UAVs. UAVs or Drone have become commercialized and more civilians use UAVs for leisure. The positive possibilities of UAV use expand. However, there could be the negative sides of UAV use. The UAVs could be used for the purpose of various crime, cybercrime, and terrorism. For instance, hacking devices attached drone could be infiltrated into the sensitive networks to steal personal informations and public data. This could be a new dimension of cybercrime. As the number of internet users and cyberspace rapidly expands, problems of crimes could be worsened both quantitatively and qualitatively. By contrast, defensive measures against such threats are limited. Especially, the Korean society is vulnerable despite its well-advanced internet and computer network technology. This article investigates the current UAV types and its developments, discusses various possibilites of UAV-related crime, cybercrime, and terrorism, and proposes responses.

• Proceedings of the Korea Information Processing Society Conference
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• 2013.11a
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• pp.684-687
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• 2013

빅데이터 환경은 수많은 데이터의 조합으로 가치를 발견하여 이를 활용하는 것이다. 이러한 환경의 전제조건은 데이터의 공개 및 공유 개방이 될 것이다. 하지만 데이터 공개 시 개인정보와 같은 정보가 포함되어 법적 도덕적인 문제나 공개된 정보의 범죄 활용 등 2차적인 피해가 발생할 수 있어 데이터 공개 시 개인정보에 대한 익명화가 반드시 필요하다. 하지만 익명화된 데이터는 다른 정보와 결합을 통하여 재식별되어 비익명화 될 가능성이 항상 존재한다. 따라서 본 논문에서는 데이터 공개 시 익명화된 데이터를 공개하기 전에 재식별성에 대한 위험을 평가하는 테스트 방법론을 제안한다. 제안하는 방법론은 실제 테스트를 수행하는 3가지 과정 및 테스트 레벨 설정과 익명화 시 고려해야 할 부분으로 이루어져 있다. 제안하는 방법론을 통하여 안전한 데이터 공개 환경이 조성되어 빅데이터 시대에 개인정보에 안전한 데이터 공유와 개방이 이루어질 것으로 기대한다.

• The Journal of the Korea Contents Association
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• v.9 no.3
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• pp.312-319
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• 2009

The purpose of the paper is to offer an analysis of adult probationers and their recidivism and to suggest a policy to prevent recidivism. Various data analysis methods like frequency analysis, cross-tabulation analysis, regression analysis and logistic regression analysis were used to determine which of a second offense factors and recidivism included in initial data investigation could effectively explain or forecast reference values. This study focused on identifying relations associated with follow-up misconducts of adults under probation, and supposing that those factors could be associated with their second offenses. But it failed to yield so much significant findings. Nevertheless, this study has its own significance in a sense that it explored various risk factors and desires of adults under probation according to empirical data, and suggested formulated measures useful in practice to select and categorize appropriate treatments.

• The Journal of the Korea Contents Association
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• v.6 no.5
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• pp.153-160
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• 2006

Recently, digital imaging is frequently used by crime scene investigators. However, the admissibility of digital photographic evidence in court is often raised because of the fact that digital photographs are more easily modified than film-based photographs. Therefore, in this article, the researcher reviewed some basic theories and legal considerations related with police crime scene investigations in Korea and The United States. This article is presented in the hope of clearing up some of the possibilities of falsifying photographic evidences and in the hope of setting the strict the rules of evidence regarding digital evidence in this county.

• Journal of Digital Forensics
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• v.12 no.3
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• pp.9-17
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• 2018

Smartphone have become commonplace because they have the advantage of facilitating communication with others and making life easier. The smartphone's system log stores various data related to the user actions. Since 2015, Huawei has been growing rapidly, with its sales volume increasing and it was ranked second in the world in three years. The use of Huawei smartphones by many users means that Huawei smartphones are likely to be used to detect traces of criminal investigations, so we need to study system logs of Huawei smartphones. Therefore, in this paper, we analyze system log which is forensically meaningful for Huawei smartphone. We also propose how to use logs in forensic investigation.

• Journal of the Korean Society of Marine Environment & Safety
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• v.22 no.6
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• pp.688-693
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• 2016

In this study, various conflicts in the maritime police organization were diagnosed and police subculture, which is different from dominant mainstream maritime police culture, was concluded to cause conflicts. In addition, maritime police conflicts and conflicts due to the balance, confrontation, and contradiction between bureaucratic and democratic values in the maritime police organization itself are discussed. The results of analysis on the effects of Maritime police subculture on organizational conflict are as follows: First, the influence of cynicism on functional conflict was explored. The higher the level of lies of the persons under investigation, the more functional conflict appeared. Also, if a person showed a low level of credibility among the police, this also led to functional conflict. In addition, if an individual showed low levels of cooperation and credibility with the police, this resulted in hierarchical conflict. Second, the influence of machismo on functional conflict was also explored. It was found that female officers experienced conflicts because of poorer job performance compared to male counterparts. In hierarchical issues, female officers experienced conflict over the reduced scope of tasks assigned to them and lower job performance ability. Third, the effect of non-acceptance of change in functional conflict was not statistically significant. An aggressive attitude toward crime control and rejecting jobs unrelated to crime influenced functional conflict, and an aggressive attitude and performing jobs unrelated to crime lead to functional conflict.

• KNOM Review
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• v.21 no.2
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• pp.18-25
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• 2018

Since the development of block-chain technology by Satoshi Nakamoto and Bitcoin pioneered a new cryptocurrency market, a number of scale of cryptocurrency have emerged. There are crimes taking place using the anonymity and vulnerabilities of block-chain technology, and many studies are underway to improve vulnerability and prevent crime. However, they are not enough to detect users who commit crimes. Therefore, it is very important to detect abnormal behavior such as money laundering and stealing cryptocurrency from the network. In this paper, the characteristics of the transactions and user graphs in the Bitcoin network are collected and statistical information is extracted from them and presented as plots on the log scale. Finally, we analyze visualized plots according to the Densification Power Law and Power Law Degree, as a result, present features appropriate for detection of anomalies involving abnormal transactions and abnormal users in the Bitcoin network.

• Clinical and Experimental Pediatrics
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• v.46 no.10
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• pp.958-965
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• 2003

Purpose : Recently the number of juvenile delinquents have been increasing in Korea and their misdeeds were getting worse. This study was conducted to find out the basic cause of juvenile delinquency and a counterplan of overcoming this distress. Methods : The authors reviewed the statistics of the Supreme Public Prosecutors Office to know the juvenile delinquents and Korean national statistics to know the changes of family environments. The author conducted a study on the family environments between student group and juvenile delinquent group in jail, and also investigated the value judgement of middle and high school students to know the difference between the recent adolescents and the youth before 1945. Results : Nuclear families, dual-income families and divorce rates have remarkably been increased recently. All of which are considered to be the basic cause of getting worse in home teaching. It was found that the delinquent group have more defective families, poorer economic status, poorer parent's educational level than the student group, and also found that the value judgement of recent youth were quite different from that of youth before 1945. Conclusion : Industrialization have changed our home-environment rapidly which made home-teaching poorer, and the children were being insecure and melancholy, which consequently made them more abnormal youth and juvenile delinquents in Korea.

• Information and Communications Magazine
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• v.33 no.11
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• pp.58-64
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• 2016

본고에서는 미래창조과학부, 정보통신기술진흥센터 (IITP)에서 2016년도 대학ICT연구센터(ITRC) 신규과제로 선정한 다차원 감시정찰 정보자산 통합, 지능형 경계체계 기술 및 지능형 국방 ICT연구센터에 대해 알아본다. 첫째, 다차원 감시정찰 정보자산 통합 기술은 시대의 발전과 함께 국가 안보에서 정보자산의 중요성은 날로 증가하고 있다. 현재 군에서 운영되고 있는 다차원적인 영상정보수집자산으로부터 수집되는 비정형의 고용량 영상데이터에 대한 자동화된 통합화 및 분석기술이 반영되어 있지 않아, 이를 자동화 처리하는 표준화된 플랫폼 개발이 시급한 실정이다. 둘째, 디지털화된 CCTV 영상은 여러 IT 정보 가운데 가장 복잡한 데이터 중 하나이며, 이상 징후를 사전에 파악하여 범죄와 사고를 예방하거나 저장된 영상 정보에서 특정한 사람을 자동으로 찾아내는 지능형 시스템으로 발전해 왔다. 최근에는 특히, 국방분야의 현 경계 및 관제 시스템에 대한 연구 필요성이 꾸준히 증가되고 있는 실정이다.