• 한국정보과학회 언어공학연구회:학술대회논문집(한글 및 한국어 정보처리)
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• 한국정보과학회언어공학연구회 2018년도 제30회 한글 및 한국어 정보처리 학술대회
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• pp.477-481
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• 2018

본 논문은 범죄 수사 기록 문서로부터 추출한 정보를 트리플로 구성하여 특정 분야의 온톨로지를 구축하고, 더 나아가 온톨로지 기반의 검색 서비스를 구현하는 일련의 과정을 설명한다. 특히 비정형 데이터로 부터 얻어낸 정보를 통해 온톨로지를 구축하고, 이를 토대로 실제 사용할 수 있는 레벨의 서비스를 구현하는 것이 특징이다. 서비스의 성능을 확인하기 위하여 사건 검색에 대한 정확도 측정 방법 중 하나인 Top-K 방식의 정확도 측정 실험을 수행하였으며, 실험 결과 완전 일치 실험에서는 약 93.52%, 유사 필드 활용 실험에서는 약 88.91%의 결과를 얻어낼 수 있었다.

• 자동차안전학회지
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• 제11권1호
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• pp.30-35
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• 2019

KIDAS (Korean In-Depth Accident Study) is a data structure of accident investigation type, vehicle breakage and human injury database. A consortium of research institutes, universities, and medical institutions has been established and operated. KIDAS has the strongest difference from the TAAS (Traffic Accident Analysis System), which is the data of the National Police Agency, that it can grasp the injury information of passengers. In this study, the mean age and weight of the most frequent accident types in the KIDAS accident statistics were calculated to determine the degree of injury according to gender. Through the MADYMO analysis, it is aimed to grasp the difference of dummy injury using commercial dummy models and scaling models are currently used.

• 센서학회지
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• 제30권4호
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• pp.204-209
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• 2021

Immersive multimedia comprising metadata for five senses can provide user experience by stimulating memory and sensation. In the case of olfactory-enhanced multimedia, a computer-generated smell is combined with additional media content to create a richer and/or more realistic experience for the user. Although several studies have been conducted on olfactory-enhanced multimedia using e-nose and olfactory display, their practical applications have been severely restricted owing to the absence of a related standard. This paper proposes a method to standardize odor metadata obtained from an e-nose system, which has been particularly used to acquire data from different coffee aromas. Subsequently, the data were transferred to an odor display applicable for olfactory-enhanced multimedia using the ISO/IEC 23005 (MPEG-V) data template.

• 약학회지
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• 제52권2호
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• pp.137-146
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• 2008

Even though driving under the influence of drug (DUID) is a worldwide problem, we, Korea has no regulation system yet except for alcohol, and there are little cases reported related to DUID. In order to investigate the type of abused drugs for drivers in Korea, we tried to analyze controlled and non-controlled drugs in alcohol-positive blood samples. 275 whole bloods, which were positive for alcohol on the roadside test, were collected from the police for two months ($Nov.{\sim}Dec.$ 2006). The analytical strategy was constituted of three steps: First, alcohol in blood samples were confirmed and quantified by gas chromatography. Second, controlled drugs were screened by $Evidence_{investigator}\;^{TM}$ (Randox, U.K.) as preliminary test. It was based on immunoassay by biochip array analyzer. Nine groups of drug abuse were screened: amphetamines, methamphetamines, cannabis, cocaine, opiates, barbiturates, methadone, benzodiazepines I (oxazepam) & II (lorazepam). Finally, confirmation of these drugs was performed by GC-MS. Blood samples were extracted by solid-phase extraction by $RapidTrace^{TM}$ (Zymark, U.S.A.). After trimethylsilyl (TMS) derivatization, eluates were analyzed to GC-MS. Total 49 drugs were investigated in this study including controlled drugs, antidepressants, 1st generation antihistamines, dextromethorphan, nalbuphine, ketamine, etc. For rapid detection, we developed the automated identification system. It was made up a new software, "DrugMan", modified Chemstation data analysis menu and newly developed macro modules. A series of peak selection, identification and reporting of the results were performed automatically by this system. Concentrations of alcohol in 275 blood samples were ranged from 0.011 to 0.249% (average, 0.119%). Among 149 blood samples, just six samples (4.0%) were showed positive results to the immunoassay: one methamphetamine and five benzodiazepines group I. By GC-MS confirmation, only benzodiazepines were detected and methamphetamine was not detected from immunoassay positive blood sample. Besides these drugs, 5 chlorpheniramines, dextromethorphan, diazepam, doxylamine, ibuprofen, lidocaine and topiramate were also detected in whole bloods by GC-MS. Conclusively, the frequency of drug abuse for Korean drivers was relatively low. There was none case which illegal drug was detected. However these results were limited to alcohol positive blood samples, so it is necessary to analyze more samples including alcohol negative blood.

• 정보보호학회논문지
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• 제28권4호
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• pp.859-868
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• 2018

데이터베이스의 삭제된 데이터 복구와 관련된 그간의 연구는 삭제된 레코드가 트랜잭션 로그에 존재하는 경우이거나 데이터베이스 원본을 물리적 방식으로 수집하여 삭제 데이터의 탐지와 복구를 진행하는 방식이 주를 이루었다. 그러나 트랜잭션 로그가 존재하지 않거나 증거수집 현장에서 물리적 방식의 원본수집이 불가능한 경우 즉, 데이터베이스 서버 정지로 인해 피압수인이 업무상 손실 또는 권리침해를 이유로 거부하는 경우에는 적용하기 곤란한 한계가 있었다. 그러므로 증거수집 현장의 제약을 대비하기 위해 다양한 수집 방식을 살펴보고 이에 따른 삭제된 레코드의 복구 가능성에 대해서 확인해볼 필요가 있다. 이 논문에서는 Microsoft SQL Server 데이터베이스를 대상으로 하는 디지털포렌식 조사 시 원본 수집의 논리적 물리적 방식별로 수집된 원본 파일 내 삭제된 데이터의 잔존 여부를 실험하여 각 수집 방식에 따른 데이터 복구 가능성을 확인하였다.

• 정보보호학회논문지
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• 제31권6호
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• pp.1267-1277
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• 2021

보이스피싱 범죄 접근 단계에서 미끼로 활용되는 광고 문자 및 음성에 이용되는 전화번호가 대량 불법대출 스팸 발송에 이용되고 있어 이를 신속하게 차단하는 것이 필요하다. 이에, 본 고에서는 불법대출 스팸 및 보이스피싱을 자행하는 음성스팸 전화번호에 대해서 신속한 이용제한을 함과 동시에 해당 전화번호로 전화 통화 연결이 원활하지 않게 지속적인 콜을 보냄으로서 해당 전화번호를 이용하여 불법을 자행하지 못하게 하는 음성스팸 역공격 시스템을 제안한다. 제안하는 시스템은 불법스팸신고처리기관과 수사기관간 대표적인 협업 모델로서 각각 역할을 정립하여 본 시스템을 개발한 후 실제 적용해 본 결과, 불법대출 음성스팸과 문자스팸 신고건수가 각각 1/3 수준으로 감소하는 것을 확인하여 본 시스템의 효과성을 입증할 수 있었다

• Structural Engineering and Mechanics
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• 제86권4호
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• pp.487-501
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• 2023

Nanoparticles have lower size and larger specific surface area, good stability and less toxic and side effects. In recent years, with the development of nanotechnology, its application range has become wider and wider, especially in the field of biomedicine, which has received more and more attention. Bone defect repair materials with high strength, high elasticity and high tissue affinity can be prepared by nanotechnology. The purpose of this paper was to study how to analyze and study the composite materials for sports bone injury based on multifunctional nanomaterials, and described the electrospinning method. In this paper, nano-sized zirconia (ZrO₂) filled micro-sized hydroxyapatite (HAP) composites were prepared according to the mechanical properties of bone substitute materials in the process of human rehabilitation. Through material tensile and compression experiments, the performance parameters of ZrO₂/HAP composites with different mass fraction ratios were analyzed, the influence of filling ZrO₂ particles on the mechanical properties of HAP matrix materials was clarified, and the effect of ZrO₂ mass fraction on the mechanical properties of matrix materials was analyzed. From the analysis of the compressive elastic modulus, when the mass fraction of ZrO₂ was 15%, the compressive elastic modulus of the material was 1222 MPa, and when 45% was 1672 MPa. From the analysis of compression ratio stiffness, when the mass fraction of ZrO₂ was 15%, the compression ratio stiffness was 658.07 MPa·cm³/g, and when it was 45%, the compression ratio stiffness is 943.51MPa·cm³/g. It can be seen that by increasing the mass fraction of ZrO₂, the stiffness of the composite material can be effectively increased, and the ability of the material to resist deformation would be increased. Typically, the more stressed the bone substitute material, the greater the stiffness of the compression ratio. Different mass fractions of ZrO₂/HAP filling materials can be selected to meet the mechanical performance requirements of sports bone injury, and it can also provide a reference for the selection of bone substitute materials for different patients.

• 기록학연구
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• 제77호
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• pp.109-150
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• 2023

이 글은 진보당 형사사건기록을 역사적 관점으로 해석하는 기존 연구 동향과는 달리 경찰-검찰-재판으로 연결되는 하나의 완결된 유기적인 기록군, 즉 기록의 생애주기적 관점 속에서 진보당 형사사건기록이 기록의 속성을 어떻게 나타내고 있는지 기록학적 시각으로 새롭게 분석한 것이다. 먼저 생산기관별로 편철된 기록물의 형태와 기관별로 주요하게 생산된 사건기록이 무엇인지 출처별 특성을 기관별로 위임된 법령을 통해 살펴보았다. 이후 경찰·검찰·특무대에서 생산한 수사기록과 기소 이후 재판과정에서 생산된 공판기록을 살펴보면서 기록이 가지는 특성에 대해 평가하였다. 특히 진보당 형사사건기록이 가지는 증거로서 불충분한 지점과 위법성에 대해 기록 특성의 관점으로 접근하여 형사소송법의 증거력 이전에 기록이 증거로서 효력을 가지는 기록학적 속성인 신뢰성, 진본성, 무결성 모두를 가지지 못하는 기록임을 증명했다.

• 분석과학
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• 제33권4호
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• pp.197-207
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• 2020

The current comparison methods with scoring systems that are used to compare visualized latent fingerprints (LF) have disadvantages. Evaluators using these methods are prone to make errors and fail to discriminate LFs correctly to notice the differences among those LFs. Therefore, a comparative and quantitative evaluation method that is capable of obtaining more objective and quantitative results is needed. Densitometric image analysis (DIA) is used in other fields as a reliable semi-quantitative comparison method. To apply DIA to LFs, the potential variables that can occur during the DIA process were tested. The visualized ridges of LFs can be compared using the concentration of dots against the background to make it possible to analyze the ridges with DIA. The variables that can be present during the DIA process include the thickness of the analysis line, the number of ridges to be taken, the number of divided zones within each of the fingerprints, and the angles of the analysis line against the ridge lines that were selected. From the analysis of the inked fingerprints and circular lines that are similar to fingerprints, the angle of the analysis lines with the ridge line was the most significant variable. The preliminary test result was applied to the comparison of LFs that were developed with the powder method and then compared with the AFIS analysis. A similar trend was found, and a more detailed and semi-quantitative comparison of the visualized LFs was possible. In the future, it is necessary to check the evaluative ability of the DIA method by analyzing the visualized LFs with other various development methods. However, DIA is currently an option that can be used as an objective comparative evaluation method during fingerprint studies with supplementary role.

• 한국항해항만학회지
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• 제27권2호
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• pp.129-135
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• 2003

이 연구는 우리나라 및 영국ㆍ미국ㆍ일본ㆍ네델란드의 해양사고에 관한 조사ㆍ심판제도를 다루며, 우리나라의 조사ㆍ심판제도를 주요 해운국가의 제도와 비교ㆍ분석하여 우리 제도의 미비점을 도출하고 다음과 같은 개선방안을 제안한다. (1) 해양안전심판원의 소속, 예산, 인사 및 청사를 독립시켜 단독기관으로 한다. (2) 해양안전심판원의 조사기능과 심판기능을 독립된 조사기관으로 이원화한다. (3) 사고원인을 규명한 결과를 행정기관 등에 권고를 할 수 있는 권한을 가지도록 한다. (4) 조사관 및 심판관을 다양한 전공의 전문가로 구성한다. (5) 조사시 사법기관과의 상호 협력체제를 구축한다. (6) 국제협력업무를 담당하는 전문부서와 인력을 갖춘다.