• 한국기록관리학회지
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• 제14권2호
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• pp.61-82
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• 2014

기록전거레코드는 이용자가 기록물에 접근하고, 기록물을 이해하는 것을 지원한다. 그런데 기록물의 생산자는 기록 외에 다른 출판물의 생산자이기도 하며, 이용자도 정보에 통합적으로 접근하기를 원한다. 게다가 기록전거레코드와 서지제어를 위한 전거레코드는 상이한 특성을 지니면서도 상호 연계가능한 공통점을 지니고 있다. 이에 본 연구에서는 기록전거레코드를 구축하거나 확장하는데 기존의 전거레코드를 반입하여 이용하고, 확장된 기록전거레코드를 다시 공유할 수 있도록 위키피디아와 같은 웹 환경에 반출하는 방안을 제안하였다. 그리고 시범적인 연계 및 공유결과를 바탕으로 도출된 시사점과 향후 과제를 제안하였다.

• 한국정보통신학회논문지
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• 제7권7호
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• pp.1393-1398
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• 2003

본 논문에서는 k-타임 슬롯 당 한번의 스케줄을 갖는 새로운 스위치 아키텍쳐를 제안한다. 여기서 k는 각 스케줄에 대해 할당된 시간 슬롯을 의미한다. 기존의 스위치 스케줄러는 각각의 스케줄에 대해 하나의 타임슬롯을 사용하지만, 제안된 스위치 시스템은 각 스케줄에 대해 다중 타임 슬롯을 사용한다. 기존의 스위치시스템과 제안된 스위치 시스템은 동일한 쓰루풋을 갖지만 제안한 스위치 시스템은 각 스케줄당 다중 셀 타임 슬롯을 점유한다. 따라서 기존의 스위치 시스템과 비교하여 간단한 회로의 스케줄러로 구현되어 질 수 있다. 스위치 시스템에 대해 제안된 스케줄링 알고리즘은 고속의 데이터 링크율을 갖는 스위치 시스템에 적용될 수 있을 것으로 사료된다.

• 한국IT서비스학회지
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• 제18권4호
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• pp.97-113
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• 2019

With the development of sensor, communication and intelligent software technology, expectation of IoT-based service which can receive desired service automatically and anytime, anywhere is getting higher. In addition, IoT-based services have begun to anticipate the development of a hyper-connected society. Despite these expectations and anticipations, few studies have empirically identified ways to improve the intentions of prospective customers to use IoT-based services. Therefore, the purpose of this paper is to propose a theoretical model that can explain the factors that determine the intention of using IoT-based services. In addition, this study investigates what factors affect the intention to use IoT-based services focusing on the connectedness. Especially, perceived connectivity with the (virtual) community, unlike the connectivity with the machines, is newly proposed, to understand the IoT technology adoption behavior. The empirical results suggest that social relationship is one of the critical factors to affect the use of services running on interconnected technology such as IoT. When IoT-based service is recognized as a link to other communities, it has been found to have a positive effect on intention to use via perceived belongingness.

• 대한산업공학회지
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• 제25권4호
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• pp.500-509
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• 1999

In this paper, we consider an optimal routing problem when point-to-point and point-to-multipoint connection traffics are offered in an ATM network. We propose a mathematical model for cost-minimizing configuration of a logical network for a given ATM-based BISDN. Our model is essentially identical to the previous one proposed by Kim(Kim, 1996) which finds a virtual-path configuration where the relevant gains obtainable from the ATM technology such as the statistical multiplexing gain and the switching/control cost-saving gain are optimally traded-off. Unlike the Kim's model, however, ours explicitly considers the VP's QoS(Quality of Service) for more efficient utilization of bandwidth. The problem is a large-scale, nonlinear, and mixed-integer problem. The proposed algorithm is based on the local linearization of equivalent-capacity functions and the relaxation of link capacity constraints. As a result, the problem can be decomposed into moderate-sized shortest path problems, Steiner arborescence problems, and LPs. This fact renders our algorithm a lot faster than the previous nonlinear programming algorithm while the solution quality is maintained, hence application to large-scale network problems.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제12권5호
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• pp.1973-1991
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• 2018

Multimedia applications over wireless networks have been evolving to augmented reality or virtual reality services. However, a rich data size compared to conventional multimedia services causes bandwidth bottlenecks over wireless networks, which is one of the main reasons why those applications are not used widely. To overcome this limitation, bandwidth aggregation techniques, which exploit a multi-path transmission, have been considered to maximize link utilization. Currently, most of the conventional researches have been focusing on the user end problems to improve the quality of service (QoS) through optimal load distribution. In this paper, we address the joint pricing and load distribution problem for multi-homing in heterogeneous wireless access networks (ANs), considering the interests of both the users and the service providers. Specifically, we consider profit from resource allocation and cost of power consumption expenditure for operation as an utility of each service provider. Here, users decide how much to request the resource and how to split the resource over heterogeneous wireless ANs to minimize their cost while supporting the required QoS. Then, service providers compete with each other by setting the price to maximize their utilities over user reactions. We study the behaviors of users and service providers by analyzing their hierarchical decision-making process as a multileader-, multifollower Stackelberg game. We show that both the user and service provider strategies are closed form solutions. Finally, we discuss how the proposed scheme is well converged to equilibrium points.

• 한국군사과학기술학회지
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• 제24권3호
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• pp.272-280
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• 2021

We research and develop a SW-based virtual testing product that can be commonly used in the design/development of non-communication EW systems before the production of physical test products. Through this study, we have developed M&S technology to improve the accuracy of EW weapon system analysis/design and to verify and predict the performance of EW equipment, and to develop proven engineering module models and model base systems. It proposes a technology to build an EW M&S framework that can flexibly link/integrate various engineering/engage-level EW heterogeneous M&S systems.

• International Journal of Advanced Culture Technology
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• 제11권2호
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• pp.238-248
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• 2023

This study aims to examine the symbolism of the emblems of World Expositions by using Victor Turner's symbolic theory as a research method, and to reveal the symbolic types behind them by classifying the emblem designs of different periods and themes. The research object is 12 comprehensive World's Fair emblems from the 1939 New York World's Fair in the United States to the 2025 Osaka World's Fair in Japan, as identified by Bureau International des Expositions. The research method mainly adopts documentary research to collect historical information and theoretical frameworks related to the design of World's Fair emblems. In the analysis process, Victor Turner's symbolic sign theory is used as the main analytical framework to link the design elements of emblems to their relevance to specific societies and cultures in order to reveal the themes, values and ideas represented by the emblem symbolism. The results of the study show that the design of the Expo emblem uses different symbols, including material symbols, behavioral symbols, sensory symbols, natural symbols, social symbols and virtual symbols, to convey the core concepts, themes and values of the Expo. Through different types of symbols, the Expo emblem shows a wide range of concerns about technology and the future, mankind and the world, nature and ecology, and society and innovation. The symbolic design of the emblem plays an important role in conveying the core concept and theme of the Expo.

• 감성과학
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• 제22권3호
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• pp.65-76
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• 2019

AR (Augmented Reality; 증강현실)은 가상의 이미지를 현실 세계에 덧붙이는 기술이다. 본 연구는 온라인으로 활발히 소비되는 품목인 음식을 AR로 제시했을 때의 효과를 살펴보고자 한다. 본 연구에서는 AR 음식 이미지가 구매 의사와 사용자 참여에 미치는 영향을 정적인 음식 이미지와 비교하여 알아보았고, 이미지 제시 방식과 구매 의사와의 관계를 사용자 참여가 매개하는지도 살펴보았다. 참가자는 두 조건 중 하나로 무선할당되어 AR 조건은 AR로 음식 이미지를 보고 정적 조건은 정적인 음식 이미지를 보았다. 그 후 참가자들은 사용자 참여와 구매 의사를 묻는 설문에 응답했다. 실험 결과, AR로 음식을 본 조건이 정적인 이미지를 본 조건보다 사용자 참여가 더 높았고, 구매 의사 또한 더 높은 것으로 나타났다. 매개 분석 결과, 사용자 참여의 간접효과는 통계적으로 유의했으며, 사용자 참여는 이미지 제시 방법과 구매 의사 간의 관계를 완전매개하는 것으로 나타났다. 하위요인별로 매개 분석을 진행한 결과, 사용자 참여의 하위 척도 중에서도 심미성의 완전매개 효과가 나타났다. 연구 결과를 정리하면, AR로 음식 이미지를 보게 되면 심미성이 높아지며, 높은 심미성은 음식에 대한 높은 구매 의사로 이어진다. 따라서 본 연구는 음식 이미지를 제시하는 방법으로 AR 기술이 효과적으로 사용될 수 있음을 밝히고 있다.

• 해양환경안전학회지
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• 제21권6호
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• pp.790-797
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• 2015

본 연구는 나이트록스 잠수와 공기 잠수를 비교하여 잠수작업에서의 안전성 및 경제성 평가를 시도하였다. 연구를 위해서 2010년 거가대교 침매터널 건설시 사용되었던 실제 잠수자료를 사용하였으며, 감압병 발생율, 작업시간, 감압시간 등 두 기체 다이빙의 특징을 분석하였다. 그 결과 잠수사가 호흡기체로 나이트록스를 사용하고 감압기체로 100% 산소를 사용한다면 감압병 발생확률을 최소화 할 수 있으며 감압기간 또한 크게 단축할 수 있음을 확인하였다. 그리고 실제 나이트록스를 사용한 공사기간과 공기 잠수를 하였을 경우의 가상의 공사기간을 비교해 본 결과 최대 3배의 공사기간 단축 효과를 가져왔음을 확인하였다. 결론적으로 시간적, 육체적으로 제한되어있는 환경에서 잠수 시 나이트록스 잠수가 공기 잠수보다 능률적이고 경제적임을 확인하였다.

• 대한한의학방제학회지
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• 제18권2호
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• pp.227-239
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• 2010

Objective : The purpose of this study was to develop the simulator which can analyze the anti-inflammatory effects of herbs based on e-cell, or the virtual cell. Method : We have ensured the medical herbs and its active compounds by investigating the oriental medicine records and NBCI(Biomedicine database). Also we have developed the web-based search system for confirming database related to anti-inflammation. We have researched the cell signal pathway related with inflammatory response control and established the mathematical model of herb interaction on selected signal pathway in e-cell. Finally we have developed the prototype which can confirm the result of this model visibly. Results : We constructed the database of 62 cases of anti-inflammatory active compounds in 61 cases of medical herbs which have been known anti-inflammation effects in the paper, 16 cases of inflammatory factors, 10 cases of signal pathways related with inflammatory response and 6,834 cases of URL(Uniform Resource Locator) of referenced papers. And we embodied the web-based research system, which can research this database. User can search basic and detailed information of medical plants related with anti-inflammatory by using information system. And user can acquire information on an active compounds, a signal pathway and a link URL of related paper. Among investigated ten pathways, we selected NF-${\kappa}B$, which plays important role in activation of immune system, and we searched the mechanisms of actions of proteins which could be components of this pathway. We reduced total network into IKK-$I{\kappa}B$ - NF-${\kappa}B$, and completed mathematic modeling by using ordinary differential equations and response variables of $I{\kappa}B-NF-{\kappa}B$ signaling model network which is suggested by Baltimore Group. We designed OED(Ordinary Differential Equation) for response of IKK, $I{\kappa}B$, $NF-{\kappa}B$ in e-cell's cytoplasm and nucleus, and measured whether an active compound of medicinal plants which is inputted by an user would have a anti-inflammation effects in obedience to change in concentration over time. The proposed model was verified by using experimental results of the papers which are listed on NCBI.