• International Journal of Computer Science & Network Security
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• v.22 no.1
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• pp.199-205
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• 2022

The main purpose of the study is to analyze the main aspects of the impact of information and communication technologies on the economic security system in the context of a pandemic situation. The new realities of the modern turbulent world require a new approach to the issues of ensuring economic security, in which information and communication technologies and information security are beginning to play an increasingly important role. As a result of a detailed analysis of the further functioning of all components of economic security in the context of the existence of the consequences of the COVID-19 pandemic.

• Proceedings of the Korea Information Processing Society Conference
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• 2011.11a
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• pp.842-845
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• 2011

현재의 스마트폰 기반의 모바일 애플리케이션은 기본적인 전화, 문자와 같은 기능들 외 네비게이션과 같은 유용하고 편리한 기능들이 사용되고 있다. 이러한 애플리케이션에는 사용자와 관련된 많은 개인 정보들이 포함되어있고, 저장된 개인 정보는 사건 발생 시 사건의 직접적인 증거 혹은 간접적은 증거로 활용될 수 있다. 스마트폰에 저장된 증거를 수집하고 분석할 때 조사관들이 사용할 수 있는 기존의 도구는 복잡한 사용방법을 숙지해야 하고, 인증된 소프트웨어가 설치되어 있는 컴퓨터에서 국한되어 분석이 가능했다. 본 논문에서는 이와 같은 문제를 해결하기 위한 웹 서비스 개념의 스마트폰 포렌식 프레임워크를 제시한다.

• Proceedings of the Korea Information Processing Society Conference
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• 2011.11a
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• pp.846-849
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• 2011

최근 iPhone, iPad의 높은 사용율과 더불어 Apple 의 Mac 계열 제품에 대한 관심도 높아지고 있다. 이는 Apple의 운영체제인 Mac OS X의 사용율 증가와 함께 디지털 포렌식 수사 환경에서의 Mac OS X의 중요성이 높아짐을 의미한다. 디지털 포렌식 관점에서 Mac OS X에는 사용자의 사용 정보를 남기는 주요 Artifacts들이 있다. 외부 저장 장치 연결 정보, 어플리케이션 설치 정보, 사용자 인증 정보, 어플리케이션 설정 정보 등이 대표적인 Artifacts들이며, 이러한 정보들은 특정 위치의 로그 파일에 남게 된다. 본 논문은 Mac OS X의 대표적 Artifacts 들을 대상으로 사용 흔적 정보가 남는 파일을 분석하여 디지털 포렌식 수사 시 활용할 수 있도록 한다.

• Journal of Multimedia Information System
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• v.5 no.1
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• pp.63-66
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• 2018

In this work, the smoothing and the interpolation basis splines are analyzed. As well as the possibility of using the spectral properties of the basis splines for digital signal processing are shown. This takes into account the fact that basic splines represent finite, piecewise polynomial functions defined on compact media.

• Journal of Information Technology Applications and Management
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• v.21 no.4
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• pp.65-96
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• 2014

To have global competitiveness in newly growing industry, good quality R&D's in convergence technology arerequired. Korean government also started to emphasize the importance of convergence technology as a new engine of growth for the future development. Since 2008, worldwide energy crisis and concerns on low carbon green growth made people focus on the convergence between information technology (IT) and energy technology (ET). However, the R&D performance comparison among the convergence technologies is not well explored so far. Therefore, this study uses Korea's patent citation database to measure the R&D performance of convergence technologies. We adopt technology development cycle, technology spillover analysis, and technology diffusion analysis to see the knowledge flow from R&D industry to others. We find that IT_ET convergence technology generally shows higher R&D performance than other convergence technologies. Contrary to public belief, convergence R&D by big companies has relatively low performance especially measures in technology spillover and technology diffusion. This implies that they might concentrate on delicate Fuel Cell Energy/Environment Technology (FEIT) or Nano Environment/Energy Information Technology (NEIT) rather than general energy information technologies. We also find that Korea's chemical industry may play a crucial role for the growth of other convergence technologies.

• The Magazine of the IEIE
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• v.31 no.1
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• pp.58-72
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• 2004

Smart sensors and biochip technologies have received a great deal of attention in recent years not only because of the enormous potential markets in the healthcare expenditures but more importantly because of its great impact on the quality of human life in the future. Collaborative research among BT (Bio Technologies), IT (Information Technologies) and NT (Nano Technologies) will bring us a new paradigm of the healthcare services. Examples include disease prediction based on the genetic tests, personal medicines, point-of-care analysis, rapid and sensitive infectious disease diagnostics, environmental monitoring for chemical or biological warfares, intelligent drug delivery systems etc. In this report, recent accomplishment in the research area on biosensors, DNA chips, Protein Chips and Lab-on-a-chips are reviewed.

• Information and Communications Magazine
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• v.19 no.11
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• pp.70-84
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• 2002

In this paper we discuss a multi-threaded baseband Processor capable of executing all physical layer processing of high data rate communications systems completely in software. We discuss the enabling technology for a software defined radio approach and present results for GPRS. 802.11b, and 2Mbps WCDMA. All of these protocols can be executed in real-time on the SB9600 chip using the Sandblaster core.

• KSII Transactions on Internet and Information Systems (TIIS)
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• v.5 no.2
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• pp.359-373
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• 2011

Demand for rich media services is rapidly increasing and, as a result, several technologies are competing to deliver rich media services to mobile, resource-constrained devices. In this paper, we explore the existing rich media technologies and analyze their key features. In addition, in order to accommodate the new requirements introduced by emerging service models, such as service convergence, these technologies must evolve from their current status. We examine how the community intends to achieve this.

• Journal of Information Processing Systems
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• v.17 no.4
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• pp.801-817
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• 2021

Network virtualization technologies have played efficient roles in deploying cloud, Internet of Things (IoT), big data, and 5G network. We have conducted a survey on network virtualization technologies, such as software-defined networking (SDN), network functions virtualization (NFV), and network virtualization overlay (NVO). For each of technologies, we have explained the comprehensive architectures, applied technologies, and the advantages and disadvantages. Furthermore, this paper has provided a summarized view of the latest research works on challenges and solutions of security issues mainly focused on DDoS attack and encryption.

• Journal of Communications and Networks
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• v.16 no.5
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• pp.479-484
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• 2014

In this paper, we consider the construction of cyclic and quasi-cyclic structured q-ary low-density parity-check (LDPC) codes over a designated small field. The construction is performed with a pre-defined sliding-window, which actually executes the regular mapping from original field to the targeted field under certain parameters. Compared to the original codes, the new constructed codes can provide better flexibility in choice of code rate, code length and size of field. The constructed codes over small fields with code length from tenths to hundreds perform well with q-ary sum-product decoding algorithm (QSPA) over the additive white Gaussian noise channel and are comparable to the improved spherepacking bound. These codes may found applications in wireless sensor networks (WSN), where the delay and energy are extremely constrained.