• 융합보안논문지
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• 제17권2호
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• pp.23-32
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• 2017

최근 정보통신기술의 발전에 따라 디지털 정보를 포함한 다양한 데이터들이 기하급수적으로 증가하였으며 이러한 데이터의 활용이 보편화된 최근의 사회는 수사와 재판과정에도 많은 변화를 주었다. 하지만 기하급수적으로 늘어나고 있는 디지털 증거에 대한 기술력과 분석력의 진보에 비해 디지털 포렌식 관련 법과 제도의 확립은 아직 부족한 실정이다. 그러므로 디지털 증거의 법적인정을 위해서는 균형 잡힌 연구의 활성화가 필요하다. 따라서 본 연구에서는 디지털 포렌식 관련 연구동향을 파악하고, 연구 활성화를 위한 객관적 데이터를 제공하기 위하여 메타분석을 진행하였다.

• 헤리티지:역사와 과학
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• 제35권
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• pp.120-137
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• 2002

It has not been a long time since we recognize that a word 'DNA' is not unfamiliar with us. Development of biology give us so much of benefits of civilization and so we call the 21th century as 'biological period'. It has not been a long time that archeology made contact with biology. With biological development, DNA typing analysis has been accomplished extensively since 1990's. We know through mitochondrial DNA base sequencing analysis that the Neanderthal man is not the origin of the human race and ancient human race set out from Africa. Biological science technology, which is polymerase chain reaction(PCR) or electrophoresis etc., made these results possible. A contact between biology, especially genetics, and archeology is getting accomplished through these current. If genetics keep in contact with archeological foundation, we know not only about ancient populations in the Korean Peninsula, but also origin of human race. This field is so-called 'DNA Archeology'. This field is of help to person identification and children discrimination as like a forensic science. We make every effort for great possibilities from co-ownership of these two fields and these fields needs to convert a recognition, especially.

• The Korean Journal of Legal Medicine
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• 제42권4호
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• pp.126-140
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• 2018

The diagnosis of cause of death (COD) or estimation of postmortem interval (PMI) is hard to perform using postmortem blood or other bodily fluids due to various biochemical changes that occur during the agonal phase or after death. To solve these problems, new paradigms and new analytical methods are needed. In this study, postmortem blood was fractionated with specific gravity 1.021, 1.029, 1.038, and 1.045, and the absorbance patterns of each sample of the 131 total cases (12 kinds of COD) were analyzed using a spectrometer. The absorbance was grouped into 9 patterns (ABS pattern 1 to 9) according to the wave length and the signal intensity. These patterns of postmortem blood were found to be distinctly different from the absorbance pattern of fresh blood. The analysis of ABS patterns is useful for the diagnosis of deaths due to acute or rapid bleeding, fire death, drowning and, in some cases, poisoning, but is not useful for the estimation of PMI.

• Animal Bioscience
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• 제35권8호
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• pp.1141-1150
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• 2022

Objective: To understand the domestication and spread of horses in history, genetic information is essential. However, mitogenetic traits of ancient or medieval horses have yet to be comprehensively revealed, especially for East Asia. This study thus set out to reveal the maternal lineage of skeletal horse remains retrieved from a 15th century archaeological site (Gongpyeongdong) at Old Seoul City in South Korea. Methods: We extracted DNA from the femur of Equus caballus (SNU-A001) from Joseon period Gongpyeongdong site. Mitochondrial (mt) DNA (HRS 15128-16116) of E. caballus was amplified by polymerase chain reaction. Cloning and sequencing were conducted for the mtDNA amplicons. The sequencing results were analyzed by NCBI/BLAST and phylogenetic tool of MEGA7 software. Results: By means of mtDNA cytochrome b and D-loop analysis, we found that the 15th century Korean horse belonged to haplogroup Q representing those horses that have historically been raised widely in East Asia. Conclusion: The horse is unique among domesticated animals for the remarkable impact it has on human civilization in terms of transportation and trade. Utilizing the Joseon-period horse remains, we can obtain clues to reveal the genetic traits of Korean horse that existed before the introduction of Western horses.

• 자동차안전학회지
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• 제16권1호
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• pp.35-41
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• 2024

In order to verify autonomous driving scenarios and safety, a lot of driving and accident data is needed, so various organizations are conducting classification and analysis of traffic accident types. In this study, it was determined that accident recording devices such as EDR (Event Data Recorder) and DSSAD (Data Storage System for Automated Driving) would become an objective standard for analyzing the causes of autonomous vehicle accidents, and traffic accidents that occurred from 2015 to 2020 were analyzed. Using the database system of IGLAD (Initiative for the Global Harmonization of Accident Data), approximately 360 accident data of EDR-equipped vehicles were classified and their characteristics were analyzed by comparing them with accident types of ADAS (Advanced Driver Assistance System)-equipped vehicles. It will be used to develop autonomous vehicle accident investigation guidelines in the future.

• Anatomy and Cell Biology
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• 제55권3호
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• pp.330-340
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• 2022

The renal artery is frequently involved in the pathogenesis of vasculorenal diseases, and it is a target in kidney surgery and therapeutic techniques for refractory hypertension. However, few detailed structural studies on the human renal artery have been conducted. Using histocytochemistry, immunohistochemistry, and quantitative image analysis, the wall thickness, structure, smooth muscle cells, extracellular matrix, and proportion of elastic tissue in the tunica media of main human renal arteries were used estimated. Ninety-six tissue samples were collected from sections of the right and left main renal arteries. The results showed that the renal artery changed from an elastic vessel in its proximal segment to a muscular artery in its distal part. A critical characteristic of the renal artery was the presence of longitudinal smooth muscle cell formations in the tunica adventitia of middle and distal segments but not in the proximal part of the artery. In addition, the tunica adventitia of the renal artery showed a rich vascularization and the presence of numerous nerves profiles. The artery's regional structural and morphometric features explain that a particular arterial pathology is more frequent in a specific vessel sector than in others. In addition, those characteristics could determine a different therapeutic response attending to the arterial sector.

• 정보보호학회논문지
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• 제34권5호
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• pp.895-905
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• 2024

코로나 바이러스에 의한 팬데믹이 종료된 시점에서도 사무 업무와 원격 근무를 연결해 주는 협업 도구는 높은 사용률을 보이고 있다. 이러한 협업 도구는 조직 내 민감한 데이터와 관련이 있으며 개인뿐 아니라 다양한 조직원들의 상호작용을 통해 많은 데이터가 생성된다. 그러나 생성된 데이터는 구조적으로 혼재되어 있고, 암호화되거나, 협업 도구에서 지원하는 안티 포렌식 기능을 통해 삭제되거나 은닉된 형태로 존재한다. 협업 도구를 대상으로 한 디지털 수사를 위해서는 이러한 데이터를 수집하고 주요 데이터를 획득하기 위한 분석 방법이 필요하다. 본 논문에서는 Windows 환경에서의 협업 도구인 네이버웍스를 대상으로 데이터를 수집하고 분석하는 방법을 설명하였다.

• Imaging Science in Dentistry
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• 제51권2호
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• pp.167-174
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• 2021

Purpose: Sex determination can be done by morphological analysis of different parts of the body. The mastoid region, with its anatomical location at the skull base, is ideal for sex identification. Statistical shape analysis provides a simultaneous comparison of geometric information on different shapes in terms of size and shape features. This study aimed to investigate the geometric morphometry of the inter-mastoid triangle as a tool for sex determination in the Iranian population. Materials and Methods: The coordinates of 5 landmarks on the mastoid process on the 80 cone-beam computed tomographic images(from individuals aged 17-70 years, 52.5% female) were registered and digitalized. The Cartesian x-y coordinates were acquired for all landmarks, and the shape information was extracted from the principal component scores of generalized Procrustes fit. The t-test was used to compare centroid size. Cross-validated discriminant analysis was used for sex determination. The significance level for all tests was set at 0.05. Results: There was a significant difference in the mastoid size and shape between males and females(P<0.05). The first 2 components of the Procrustes shape coordinates explained 91.3% of the shape variation between the sexes. The accuracy of the discriminant model for sex determination was 88.8%. Conclusion: The application of morphometric geometric techniques will significantly impact forensic studies by providing a comprehensive analysis of differences in biological forms. The results demonstrated that statistical shape analysis can be used as a powerful tool for sex determination based on a morphometric analysis of the inter-mastoid triangle.

• 약학회지
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• 제52권6호
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• pp.480-487
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• 2008

We described an estimation of measurement uncertainty in quantitative analysis of 11-nor-9-carboxy-${\Delta}^9$-tetrahydrocannabinol (THCCOOH), the major metabolite of ${\Delta}^9$-tetrahydrocannabinol, in urine sample by solid-phase extraction (SPE) and GC/MS detection. The analytical results were compared and the different contributions to the uncertainty were evaluated. Inter-day and inter-person validation were performed using statistical analysis of several indicative factors. Measurement uncertainty associated with target analyte in real forensic samples was estimated using quality control (QC) data. Traceability of measurement was established through traceable standards, calibrated volumetric glassware and volume measuring device. The major factors of contribution to combined standard uncertainty, were calibration linearity, inter-day repeatability and inter-person reproducibility, while those associated with preparation of analytical standards and sampling volume were not so important considering the degree of contribution. Relative combined standard uncertainties associated with the described method was 12.05% for THCCOOH.

• 정보보호학회논문지
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• 제21권4호
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• pp.89-100
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• 2011

그간 디지털 포렌식의 활성 시스템 분석 분야의 한 화두는 물리 메모리 이미지 분석이었다. 물리 메모리 분석은 프로세스를 은닉을 하더라도 그 데이터를 물리 메모리에서 확인할 수 있고 메모리에 존재하는 사용자의 행위를 발견할 수 있어 분석 결과의 신뢰성을 높이는 등 디지털 포렌식 분석에 큰 도움이 되고 있다. 하지만 메모리 분석 기술 대부분이 윈도우 운영체제 환경에 초점이 맞추어져 있다. 이는 분석 대상의 다양성을 고려하였을 때 타 운영체제에 대한 메모리 분석이 필요하게 되었음을 의미한다. Mac OS X는 윈도우에 이어 두 번째로 높은 점유율을 가진 운영체제로 부팅 시 커널 이미지를 물리 메모리에 로딩하면서 운영체제가 구동하고 주요 정보를 커널이 관리한다. 본 논문은 Mac OS X의 커널 이미지가 저장하고 있는 심볼 정보를 이용한 물리 메모리 분석 방법을 제안하고, 제안한 내용을 토대로 물리 메모리 이미지에서 프로세스 정보와 마운트된 장치 정보, 커널 버전 정보, 외부 커널 모듈정보(KEXT)와 시스템 콜 목록 정보의 추출 방법을 보인다. 추가적으로 사례 분석을 통해 물리 메모리 분석의 효용성을 입증한다.