• 제목/요약/키워드: Digital First

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디지털 수사 초동조치 대응인력 및 예비분석관들이 갖추어야 할 요건 (Digital Investigation First Responder and Preliminary Analyst Requirements)

  • 조슈아 제임스;장윤식
    • 한국인터넷방송통신학회논문지
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    • 제16권5호
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    • pp.49-54
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    • 2016
  • 디지털 증거를 다루는 범죄 사건 수사가 증가함에 따라 초동조치를 할 수 있는 인력과 개선된 수사절차 모델의 필요성이 증가하고 있다. 최근 들어 디지털 포렌식 분류(triage)와 예비분석 등의 개념이 수사 연구기관에 각광을 받고 있다. 하지만 초동조치 대응인력 및 예비분석관들이 구체적으로 어떤 훈련을 받아야 하는지에 대한 연구는 그다지 주목받지 못했다. 오히려 많은 조직에서 초동조치 대응인력이 전문적인 디지털 포렌식 분석관과 같은 실력을 갖추어야 한다고 여기고 있다. 본 연구에서는 '이상적인' 상황에서 디지털 수사의 초동조치 대응인력과 예비분석관들이 어떤 능력을 갖추어야 하며, 하드웨어 및 소프트웨어 측면에서의 필요사항과, 어쩌면 가장 중요하다 할 수 있는 교육훈련 조건에 대해 논하고자 한다.

디지털 시대의 공영방송 뉴스 전략 : BBC의 'Digital First' 사례를 중심으로 (Strategy for Public Service Broadcasting News in Digital Era : Focusing on BBC 'Digital First' case)

  • 주재원
    • 디지털융복합연구
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    • 제17권9호
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    • pp.13-22
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    • 2019
  • 본 연구는 디지털 미디어 환경의 급속한 변화 속에서 민주주의 사회의 대표적 공론장이라 할 수 있는 공영방송 뉴스의 도전 과제를 진단하고, 전 세계에서 가장 성공적인 공영방송 디지털 정책으로 손꼽히는 영국 BBC에 대한 사례연구를 통해 현실적인 대안을 모색해보고자 하였다. 연구결과 영국 BBC의 Digital First 전략은 근본적인 뉴스 형식의 변화를 추구함으로써 콘텐츠에 대한 혁신이 동시에 이루어졌다. 또한 소셜미디어와 동영상 콘텐츠에 대한 수용자들의 필요를 선별적으로 분석하여 선택과 집중 전략으로 접근한 점도 흥미로웠다. 마지막으로 연령대별 뉴스 시청 행태를 분석해서 맞춤형 디지털 콘텐츠를 제작하는 것 역시 한국 공영방송에 시사하는 바가 크다. 이상의 사례들을 통해 연구한 바들이 한국의 공영방송에서도 정책적으로 반영되기를 기대한다.

디지털 시네마 플랫폼 구축과 보안에 관한 연구 (A study on the implementation of Digital Cinema platform and its security system)

  • 김종안;김진한;김종흠
    • 한국정보통신설비학회:학술대회논문집
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    • 한국정보통신설비학회 2006년도 하계학술대회
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    • pp.82-86
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    • 2006
  • Film has been used widely since Auguste and Louis Lumiere hold the first private screening in 1895. Star Wars Episode II: Attack of the Clones directed by George Lucas released on May 16, was the first motion picture both to be shot completely on a high definition digital 24-frame system and to be projected by digital projectors. Its success showed us that the digital cinema era is imminent. Digital Cinema will enable the studios and movie distributors to low the expenses of making and delivering film prints and dissemination of it can put the entire digital cinema ecosystem in great jeopardy. Therefore DRM and other security policies are used for digital cinema content protection. In this paper it will be discussed how the digital cinema platform can package (encooe & encrypt), transport, and project the digital cinema contents safely.

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디지털 기술을 이용한 선수술 악교정치료 (Application of CAD-CAM technology to surgery-first orthognathic approach)

  • 김윤지;길병규;류재준
    • 대한치과의사협회지
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    • 제56권11호
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    • pp.622-630
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    • 2018
  • For successful surgery-first approach, accurate prediction of skeletal and dental changes following orthognathic surgery is essential. With recent development of digital technology using computer-aided design/computer-aided manufacturing (CAD/CAM) technology, attempts to provide more predictable orthodontic/orthognathic treatment have been made through 3D virtual surgery and digital tooth setup. A clinical protocol for the surgery-first orthognathic approach using virtual surgery is proposed. A case of skeletal Class III patient with facial asymmetry treated by the surgery-first approach using digital setup and virtual surgery is presented. Advantages and limitations of applying CAD/CAM technology to orthognathic surgery are discussed.

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Reversible Multipurpose Watermarking Algorithm Using ResNet and Perceptual Hashing

  • Mingfang Jiang;Hengfu Yang
    • Journal of Information Processing Systems
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    • 제19권6호
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    • pp.756-766
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    • 2023
  • To effectively track the illegal use of digital images and maintain the security of digital image communication on the Internet, this paper proposes a reversible multipurpose image watermarking algorithm based on a deep residual network (ResNet) and perceptual hashing (also called MWR). The algorithm first combines perceptual image hashing to generate a digital fingerprint that depends on the user's identity information and image characteristics. Then it embeds the removable visible watermark and digital fingerprint in two different regions of the orthogonal separation of the image. The embedding strength of the digital fingerprint is computed using ResNet. Because of the embedding of the removable visible watermark, the conflict between the copyright notice and the user's browsing is balanced. Moreover, image authentication and traitor tracking are realized through digital fingerprint insertion. The experiments show that the scheme has good visual transparency and watermark visibility. The use of chaotic mapping in the visible watermark insertion process enhances the security of the multipurpose watermark scheme, and unauthorized users without correct keys cannot effectively remove the visible watermark.

베이비붐세대의 디지털라이프 지수 (Digital Life Index of Babyboom Generation)

  • 권순재;김미령
    • 한국정보시스템학회지:정보시스템연구
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    • 제23권1호
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    • pp.161-184
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    • 2014
  • Our study measures the Digital Life Index (DLI) of baby boomers by considering the utilization of digital devices in their everyday life. The study was conducted by implementing the following three-step approach: (1) development of survey questions and data collection; (2) build Digital Life Index (DLI) model and lastly; (3) empirical analysis using the Digital Life Index (DLI). In the first stage in order to develop the survey questions to measure the digital index, two surveys were conducted. For the first preliminary survey, it was done based on the existing literatures which enabled this investigation through FGI analysis involving real professionals. The second survey was conducted by commissioning a specialized external firm. In this survey, a total of 400 data was collected to verify the validity and objectivity of the data sample. The data gathered through the survey questions was used to develop the digital index. Firstly, the appropriate factors were extracted by conducting factor analysis. This factor analysis validates and verifies the factors which are appropriate in measuring Digital Life Index (DLI). The derived factors are broadly divided into five main factors. The first factor describes the possession, purchase and use of digital device (x1). Meanwhile, the second factor describes the digital device's software (x2) and the third factor describes the participation in utilizing digital device (x3). The fourth factor describes the utilization of digital device in human personal relationship (x4) and lastly, the fifth factor describes the effect of digital device in everyday life and work environment (x5). Secondly, the digital index model was developed. The variables to represent the Digital Life Index (DLI) are ${\chi}1t,{\chi}2t,{\chi}3t,{\chi}4t$ and ${\chi}5t$. Furthermore, as experience in using the digital index grows overtime, the growth can be represented by the "S" shape. Based on the results, Digital Life Index(DLI) is distributed with the highest point at 90.3 and the lowest point at 25.9.

노인을 위한 지능형 공간환경 연구 - 주거공간의 디지털 시스템화를 위한 노인요구 조사를 중심으로 - (A Study on Intelligent Space Design Supporting the Elderly - Focused on the Needs of the Aged on Digital Systems in Residential Space -)

  • 오찬옥
    • 한국실내디자인학회논문집
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    • 제17권5호
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    • pp.61-71
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    • 2008
  • The study alms to seek a plan of applying the digital technology to housing for the elderly. The purpose of the study was to grasp the needs of the aged on 30 types of digital systems in housing. The subjects were 120 persons aged of more than 60 years and lived in Busan. Data were collected by the individual interview. The following results were drawn from this study. First, the needs of the aged on the digital systems categorized as safe and security, control of indoor environment, and housework support were very high and should be provided at first. Second, the necessary types of digital systems which should be provided to the digital home for the elderly were digital systems for heating control, health checking, sensing of fire and gas leak, and house cleaning. Also, the basic types of digital systems were ones for invasion and burglarproof, emergency, air cleaning, automatic facet, door locking, and waste collecting. Third, the Income and usage level of digital equipment of the aged influenced to the floods of the aged on the digital system. Therefore, in addition to the necessary and basic types of digital systems mentioned above, the income and usage level of digital equipment should be considered in planning the digital home for the elderly.

영아의 디지털기기 사용과 디지털기기에 대한 부모의 인식이 영아의 언어발달에 미치는 영향 (The Effects of Infant's Digital Device Usage and Parents' Perception on Infant's Language Development)

  • 김유은;김정화
    • 한국보육지원학회지
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    • 제16권3호
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    • pp.39-58
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    • 2020
  • Objective: The purpose of this study is to investigate the effects of parents' perception of infant's use of digital devices on language development. Methods: For this study, a survey was conducted on 285 parents of 1-2year old infants attending childcare centers in Jeollanam-do. Results: First, the digital devices that infants were exposed to the most was the television, and their first exposure to digital devices was at 13~17 months. The most time spent using digital devices was 30 minutes and they most frequently used them at home. Second, parents perceived the educational value of digital devices as low. Third, language development was high when the initial use of digital devices for infants was late, when the daily use time of digital devices was less than 30 minutes, when digital devices were used with parents, and when parents always managed digital devices and usage time. Fourth, Parents' perception of the use of digital devices has a significant influence on their infants' language development. Conclusion/Implications: Language development due to the use of digital devices and parents' perception of the use of digital devices has a significant impact on infants language development.

Comparison of TDC Circuit Design Method to Constant Delay Time

  • Choi, Jin-Ho
    • Journal of information and communication convergence engineering
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    • 제8권4호
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    • pp.461-465
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    • 2010
  • This paper describes the design method of Time-to-Digital Converter(TDC) to obtain the constant delay time and good reliability. The reliability property is described with delay elements. In TDC the time signal is converted to digital value which is based on delay elements for the time interpolation. To obtain the constant delay time, the first and the last delay elements have different structure compared to the middle delay elements. In the first and the last delay elements, the driving ability could be controlled for the different delay time. The delay element can be designed by analog and digital devices. The delay time of the element using analog devices is not sensitive to process parameters than that of the element using digital devices. And the TDC circuit by the elements using analog devices shows better reliability than that by the elements using digital devices also.

위계선형모형을 이용한 개인의 정보화 격차 결정요인 (Determinants of the Digital Divide using Hierarchical Generalized Linear Model)

  • 김미영;최영찬
    • 농촌계획
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    • 제14권3호
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    • pp.63-73
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    • 2008
  • The purpose of this study is to analyze the determinants of the digital divide at individual level and regional level in Korea, considering interaction between individual and the regional variables. Following results are obtained. First, individual level digital devide in the 16 different regions has been found in terms of Internet use, implying the needs for further analysis on impact of the regional factor in individual Internet use. Second, the result finds the impact of level-l individual variables, "gender, age, education, income and jobs" on digital divide, significantly at level 10% level. Third, the regional variables influencing the individual digital divide were not found at state level. However, regional factors might affect digital devide at county level. Study suggest some plans to reduce digital divide. First, the digital devide at individual level should be remedied by focusing on neglected class of people. Second, we need to approach the digital divide by analyzing in more detail, reflecting interactions of the regional variables and individual variables. Third, we should come up with a policy for mending the digital divide at regional level.