• 한국정보통신설비학회:학술대회논문집
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• 한국정보통신설비학회 2007년도 학술대회
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• pp.327-330
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• 2007

This article discusses a capacity planning method in QoS-guaranteed IP networks such as BcN (Broadband convergence Network). Since IP based networks have been developed to transport best-effort data traffic, the introduction of multi-service component in BcN requires fundamental modifications in capacity planning and network dimensioning. In this article, we present the key issues of the capacity planning in multi-service IP networks. To provide a foundation for network dimensioning procedure, we describe a systematic approach for classification and modeling of BcN traffic based on the QoS requirements of BcN services. We propose a capacity planning framework considering data traffic and real-time streaming traffic separately. The multi-service Erlang model, an extension of the conventional Erlang B loss model, is introduced to determine required link capacity for the call based real-time streaming traffic. The application of multi-service Erlang model can provide significant improvement in network planning due to sharing of network bandwidth among the different services.

• 한국컴퓨터정보학회논문지
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• 제21권10호
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• pp.69-76
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• 2016

In this paper, we propose a real-time remote logging model for development of android applications using LBS(Location based Service). The model has two major parts: Mobile Log Management Service and Remote Log Server. Mobile Log Management Service consists of the log collector and the remote log manager. The log collector is an aspect of AOP which can collect logs from the target application without modifications of source codes. The remote log manager has a background service component so that it can receive logs whenever the log collector captures logs from the target application. Remote Log Server communicates with Mobile Log Management Service by socket interface. Therefore, Remote Log Server can show logs in real-time. To validate the efficiency of the proposed model, we show a case study, and compare the model with other models.

• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2013년도 춘계학술대회
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• pp.965-968
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• 2013

본 논문에서는 에코 드라이빙 컴포넌트 기반 카쉐어링 서비스를 제안하였다. 카쉐어링 서비스는 웹 서비스와 스마트폰 애플리케이션으로 구성된다. 제안한 서비스는 시간과 연료 소모량을 기반으로 요금을 징수한다. 연료 소모량을 획득하기 위해 OBD-II 데이터의 MAF 값을 이용하였다. 애플리케이션은 스마트폰과 차의 OBD-II 포트를 연결하기 위해 블루투스를 이용한다.

• International Journal of Contents
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• 제5권1호
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• pp.9-14
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• 2009

The purpose of this study is to investigate the impacts of e-service quality factors on customer satisfaction and behavior intention by Web site types. Difference and moderating effect resulting from the type of web site users about an association with reaction of satisfaction and those component concepts are also one of the aims in the study. As a result, the study found that factors of web site service quality variables had positive impacts on customer satisfaction. And customer satisfaction also had a positive impact on relationship intention and word of mouth intention. Furthermore, through the comparative analysis, we found that the service quality differed on the effects of customer satisfaction by web site types. According to those results, marketing managers should develop different service strategies based on different web site types.

• 한국신뢰성학회지:신뢰성응용연구
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• 제17권2호
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• pp.103-111
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• 2017

Purpose: Accelerated degradation tests can speed time to market and reduce the test time and costs associated with long term reliability tests to verify the required service life of a product or material. This paper proposes a service life prediction method for components or materials using an accelerated degradation tests based on the relationships between temperature and the rate of failure-causing chemical reaction. Methods: The relationship between performance degradation and the rate of a failure-causing chemical reaction is assumed and least square estimation is used to estimate model parameters from the degradation model. Results: Methods of obtaining acceleration factors and predicting service life using the degradation model are presented and a numerical example is provided. Conclusion: Service life prediction of a component or material is possible at an early stage of the degradation test by using the proposed method.

• 품질경영학회지
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• 제50권3호
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• pp.491-502
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• 2022

Purpose: The purpose of this study is to find factors affecting the acceptance intention of autonomous mobility service by applying the unified technology acceptance theory(UTAUT). Methods: The measurement items for each component of this study were modified to meet the purpose of the study by referring to previous studies related to mobility based on UTAUT, which has secured validity and reliability in many studies. The collected data through the online survey were analyzed using hierarchical regression analysis. Results: It was found that performance expectation, effort expectation, social influence, and facilitation conditions for autonomous mobility service had a positive effect on acceptance intention. Also, in this relationship, it was confirmed that driving experience moderated the relationship between performance expectation and acceptance intention, and between effort expectation and acceptance intention. Conclusion: Understanding the public's acceptance of autonomous mobility services, and suggesting strategic implications for the direction of service development to companies that are pushing to enter the autonomous mobility service market.

• 한국도서관정보학회지
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• 제35권4호
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• pp.423-449
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• 2004

지식사회에서 주요자원은 지식이 되며 이러한 지식을 관리하는 도서관의 역할이 매우 중요하다. 기하급수적으로 증가하는 지식정보들 중 조직구성원들이 필요하고 유용한 지식만을 선택하여 이용자의 취향에 맞는 형태로 제공할 수 있는 지식정보관리가 필요하다. 따라서 이 연구에서는 기존의 도서관 정보봉사에서 나타나는 문제점들을 해결하기 위해 도서관이 수행해야 할 역할 및 기능들을 Help-Desk 서비스 측면에서 온라인과 오프라인으로 구성요인들을 조사하고 분석하였다. 이 결과를 토대로 웹기반 Help-Desk 지식관리 시스템 모형을 제시하였다.

• 한국관광식음료학회지:관광식음료경영연구
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• 제16권1호
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• pp.21-41
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• 2005

This study proposes the customer quality a parameter of service quality from a new perspective, develops and evaluation scale for it in relation to service business, analyzes and evaluates the its effect on service quality and performance. First, the concept of service quality and customer quality was investigated in the literatures, to find a basis for its relation to the quality of hotel service. However, previous 1) Among the service quality components, the strongest correlation exists between physical quality and service quality. 2) Hotel quality is most influenced by customer quality, followed by service provider quality and physical quality showing that when customer quality is incorporated as a prerequisite parameter if hotel quality it has the most effect on hotel quality, which is a new result. 3) Customer quality plays a significant indirect role via hotel quality on performance, and the physical quality and service provider quality offered to the customer at a hotel have more direct effect on performance, illustrating the difference in the effect on hotel quality depending on the component of hotel quality. 4) The evaluation of hotel quality and performance becomes more meaningful and valid only when customer quality is included as a prerequisite parameter of hotel quality to strongly interact with service provider quality 5) Comparative analysis of the different qualities according to the hotel class show a significant difference in customer quality, physical quality and service provider quality and performance between first-class and second-class hotels.

• 한국정보과학회논문지:컴퓨팅의 실제 및 레터
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• 제16권11호
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• pp.1126-1130
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• 2010

차세대 IT유망 교육 분야로 지능로봇 관련 연구가 활발하게 진행되고 있다. 지능로봇은 실세계의 인간 세계와 가장 근접한 환경을 많이 고려하고 있기 때문에 인간의 행위 혹은 판단 능력을 기능으로 제공할 수 있어야 한다. 이와 같은 이유로 최근 로봇 교육은 다양한 하드웨어 형태의 로봇뿐만 아니라, 많은 기능을 포함한 서비스 컴포넌트 아키텍처 형태의 소프트웨어 로봇 개발 연구가 진행되고 있다. 따라서 본 논문에서는 RDS를 이용한 창의적 문제해결 학습방법에 관하여 제안한다. RDS는 소프트웨어 모듈로서 지능로봇을 제어하거나 프로그램하기 위한 소프트웨어 도구이다. 지능로봇 통합 개발 표준화를 고려한 컴포넌트 프레임워크를 활용하여 다양한 지능로봇의 형태와 여러 환경을 3차원 공간의 시각적 시뮬레이션 환경으로 제공하고 교육시간과 적은 비용으로 지능로봇 실험 환경을 제공할 수 있다.

• 정보보호학회논문지
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• 제19권1호
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• pp.71-79
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• 2009

현재 커널 기반 데이터인 시스템 호출을 이용하는 호스트 기반 침입 탐지 연구가 많이 진행되고 있다. 시스템 호출을 이용한 침입 탐지 연구는 시퀀스 기반과 빈도 기반으로 시스템 호출을 전 처리 하는 방법이 많이 사용되고 있다. 실시간 침입 탐지 시스템에 적용할 때 시스템에서 수집 되는 시스템 호출 데이터의 종류와 수집 데이터가 많아 전처리에 어려움이 많다. 그러나 비교적 시퀀스 기반 방법보다 전처리 시간이 작은 빈도 기반의 주로 방법이 사용 되고 있다. 본 논문에서는 현재에도 시스템 공격 중 비중을 많이 차지하고 있는 서비스 거부 공격을 탐지 하기위해 빈도 기반의 방법에 사용하는 전체 시스템 호출을 주성분 분석(principal component analysis)을 이용하여 주성분이 되는 시스템 호출들을 추출하여 베이지안 네트워크를 구성하고 베이지안 분류기를 통하여 탐지하는 효율적인 방법을 제안한다.