• KSII Transactions on Internet and Information Systems (TIIS)
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• 제15권8호
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• pp.2805-2826
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• 2021

In most cases, the routing policy of networks shows a preference for a static one-to-one mapping of communication pairs to routing paths, which offers adversaries a great advantage to conduct thorough reconnaissance and organize an effective attack in a stress-free manner. With the evolution of network intelligence, some flexible and adaptive routing policies have already proposed to intensify the network defender to turn the situation. Routing mutation is an effective strategy that can invalidate the unvarying nature of routing information that attackers have collected from exploiting the static configuration of the network. However, three constraints execute press on routing mutation deployment in practical: insufficient route mutation space, expensive control costs, and incompatibility. To enhance the availability of route mutation, we propose an OpenFlow-based route mutation technique called Polymorphic Path Transferring (PPT), which adopts a physical and virtual path segment mixed construction technique to enlarge the routing path space for elevating the security of communication. Based on the Markov Decision Process, with considering flows distribution in the network, the PPT adopts an evolution routing path scheduling algorithm with a segment path update strategy, which relieves the press on the overhead of control and incompatibility. Our analysis demonstrates that PPT can secure data delivery in the worst network environment while countering sophisticated attacks in an evasion-free manner (e.g., advanced persistent threat). Case study and experiment results show its effectiveness in proactively defending against targeted attacks and its advantage compared with previous route mutation methods.

• International Journal of Computer Science & Network Security
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• 제21권1호
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• pp.77-83
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• 2021

The dependency on technology has increased with the increase in population. Technology plays a crucial role in facilitating, organizing and securing people's life nowadays. The Internet has penetrated every face of present-day lifestyles. Yet another ubiquitous use of digital technology today is evident in transferring money and speeding cross border payments that are done through digital transactions. This paper investigates transferring money and data through banks and companies by using the Blockchain concept through decentralized distributed system. The present research also peruses several contexts in which this technology has already been implemented successfully and demonstrates the advantages of replacing the paper money with digital money. Using cryptocurrency will facilitate people's life by reducing time, securing the process of money transfer, and increasing data integrity. The primary benefit of this content analysis is that it addresses an innovative subject, in a new light and using timely recent research references drawn from 2018-2020. Thus, our study is a contemporary and conclusive source for all present and future endeavours being undertaken in the domain of using blockchain for e-transactions.

• 한국통신학회:학술대회논문집
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• 한국통신학회 2006년도 하계종합학술발표회 논문 초록집
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• pp.576-576
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• 2006

• 한국실내디자인학회논문집
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• 제22권2호
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• pp.220-229
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• 2013

Recently, the volume of knowledge information in the form of electronic media is quickly increasing in the library field along with the advancement of electronic communication technology. Libraries have both printed data and electronic data and are faced with the issue of corresponding with the access and use of knowledge information in terms of the space. This study is for building the layout of a sustainable knowledge information space based on the view that the library is the official infrastructure of the knowledge information based society. It is intended to analyze the meaning of knowledge information in the modern society, characteristics in the spatial organization and the transmission of knowledge information. The goal of this study is to understand and forecast the spatial structure where users access knowledge information and exchange with one another and developing the direction and guidelines for the spatial plan that today's libraries prefer through this analysis. For this, this study firstly prepared the base for the research on library space which can be considered as the physical realization of such concepts, through the theoretical review about the knowledge information and social concepts as well as characteristics of modern society. Also, it seized the characteristics in the transmission of knowledge information by conducting a structural analysis of the information service such as knowledge information and space, space and information media, space and space through the cases of 10 public libraries. The analysis resulted in basic data including the system of organizing knowledge information, system of knowledge information transferring elements and structure, and layout pattern of each library. These results are deemed meaningful for the promotion of communication with the user through the exchange, creation, and experience of knowledge information, the social role of today's public library.

• 한국IT서비스학회지
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• 제12권2호
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• pp.13-29
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• 2013

Offshore software development by Korean companies is mainly led by big SI (System Integration) companies. They open Offshore Development Centers (ODC) in developing countries such as India, China, and Vietnam to source software development for their mother companies. Firms with ODC consider transferring knowledge such as business and cultural knowledge as the most complicated yet essential process for the success of offshore development. This study investigates whether the selection of a governance mechanism is related with knowledge transfer and thus the success of offshore development. The results of this study indicate that a hierarchical governance mechanism is appropriate for transferring company-specific, sensitive, complex knowledge in offshore software development.

• 한국인쇄학회지
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• 제28권2호
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• pp.45-56
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• 2010

The computer simulation is presented of gravure ink transferring behavior and penetration to the paper when an gravure roller is used to transfer a printing ink onto a substrate. The three dimensional unsteady ink motion is simulated by Polyflow package software and experimented by IGT gravure printing test machine. The simulation is performed where the flow domain is bounded above by a stress free surface and bounded below by a moving substrate. Specific predictions are made for particular pattern of cells and substrates. Cell size and ink rheological properties are found to be the principal determination of transferring behavior. Simulation is currently restricted to the flow domain beneath the receding meniscus. Both Newtonian and shear thinning inks are considered.

• 정보처리학회논문지B
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• 제11B권5호
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• pp.603-610
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• 2004

분산검색시스템은 중재자 또는 메타검색엔진에 의한 중앙통제로 인하여 중앙 시스템에 트래픽이 집중된다. 또한 중앙통제를 위한 복잡한 알고리즘의 설계와 별도의 하드웨어 설치 등의 비용 증가 문제가 발생한다. 따라서 이러한 문제를 해결하기 위해 여러 검색시스템이 서로 독립적인 검색기능을 가지면서도 중앙의 통제를 받지 않으면서 상호 협조할 수 있는 방식이 필요하다. 본 논문에서는 분산검색시스템과 관련된 여러 연구를 살펴보고 다중의 정보검색시스템이 중앙의 통제를 받지 않는 순차적 전달방식(STM)을 이용한 분산정보검색시스템의 Framework를 설계하며 이와 관련된 알고리즘을 구현한다 이를 위해 먼저 웹을 논리적으로 분할하여 관리하는 웹 분할 정책을 제시하며, 검색시스템의 수에 따른 순차적인 질의 처리방식을 각각 예제를 통해 설명한다. Framework에 적합한 정보검색시스템의 3 Layer구조와 각 Layer별 기능과 모듈을 또한 제시한다. 마지막으로, STM 알고리즘의 효율적 구현을 위하여 모듈 구조를 분석하고 이의 pseudocode 표현을 제시하며 서버간 순차적 질의 전달 시연과정을 통해 제안한 SIM 알고리즘이 효율적으로 동작함을 보여준다.

• Imaging Science in Dentistry
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• 제51권3호
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• pp.337-339
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• 2021

• 한국정보통신학회:학술대회논문집
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• 한국해양정보통신학회 2009년도 추계학술대회
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• pp.131-134
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• 2009

차량용 인포테인먼트 네트워크인 MOST에서 멀티미디어 서비스를 원활히 제공하기 위해 효율적인 채널할당이 요구된다. MOST 네트워크의 채널할당에 관한 연구로서 스트리밍데이터 전송을 효율적으로 하기 위한 네트워크의 부하에 따른 채널 할당에 관한 연구는 있으나 전송하고자 하는 데이터의 대역폭에 따라 채널의 할당을 결정하는 연구 사례는 없다. 따라서, 본 논문에서는 전송하고자 하는 멀티미디어 데이터를 분석한 후 최적의 요구채널을 산출하여 할당할 채널의 수를 결정하는 방안을 제안한다. 제안하는 방안을 토대로 MOST 네트워크의 데이터 영역에 채널을 할당 시 최적의 채널을 할당함으로써 채널의 낭비를 줄이고 Boundary Descriptor의 변경으로 인한 네트워크 초기화를 예방할 수 있다.

• Journal of the Korean Data and Information Science Society
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• 제14권1호
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• pp.11-21
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• 2003

In 1997 a new educational system that allows student to transfer between and within universities was first introduced. As a result, most colleges of basic arts and sciences face a serious problem since quite a few students there have transferred or seems to want to transfer. In this paper we study a problem of building a forecasting neural network for students who can possibly transfer.