• 한국문헌정보학회지
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• 제14권
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• pp.3-18
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• 1987

The factors which can help the library users trace the specific subject that she or he needs are most important, when they are not sure of what they need exactly in front of a classified catalogue. This study is about what the factors are and how the factors affect the inference of users' reasoning structure. Since the classified catalogues are reflected by the classification structure, naturally the logic in the classification system becomes the focus of the study. This study concludes the classification system which enables the library users to use their reasoning capabilities, viz. the classification system which can help the users trace the specific subject even as they are not sure of the exact subject they need has following factors in the system. 1. It should have the validity based on the facts in the components of the classification system. 2. It should be logically arranged when the components of the classification system are placed in due sequence. 3. The notation of the system should be based on mnemonics. The reason is that the indispensable factors in the formation of inference of human reasoning structure are: 1. the premises which are based on the facts and 2. the logical relationship between the premises and conclusions which are induced from the premises.

• 정보관리학회지
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• 제24권3호
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• pp.5-19
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• 2007

조직은 최종사용자 업무를 지원하기위한 새로운 정보시스템을 투자하고 있으며 이러한 정보시스템을 통한 이점은 정보센터의 효과적인 지원과 지원에 대한 사용자의 만족도에 의해 크게 좌우되어가고 있다. 정보센터는 정보 집약적이며 최신의 기술을 활용하여 조직의 역량을 전달하기 위해 사용자를 지원하므로 정보센터는 최종사용자 지원활동과 관련하여 매우 중요한 의미를 갖는다. 본 연구는 정보센터의 사용자 만족도와 관련된 정보제공, 신뢰제공, 그리고 시스템 제공역량과 같은 최종사용자 지원요인들을 살펴봄으로서 사용자만족도 향상을 위해 고려되어야 할 사항에 대해 논의하였다. 정보제공, 서비스 스텝의 신뢰성제공, 그리고 시스템제공 역량 등 18개의 잠재요인으로 252명의 사용자에 대한 설문내용을 기초로 3개의 가설을 검증하였다. 또한, 동일한 잠재요인에 대해 지원요인의 지각된 중요도와 수행정도의 차이를 통해 서비스 품질 격차를 조사하였다. 연구결과 정보제공 활동, 서비스 신뢰성제공 활동, 그리고 시스템 제공역량은 정보센터의 사용자 만족도에 유의한 영향을 미치는 것으로 파악되었으며, 사용자 만족도는 정보센터의 지원요인에 대한 지각된 중요도와 수 행정도에 대한 서비스 품질 격차의 정도에 의해서도 영향을 받는 것으로 밝혀졌다.

• Journal of Web Engineering
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• 제19권2호
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• pp.139-166
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• 2020

The functions, capabilities, and effects produced by the application services of cyber physical systems (CPS) are usually consumed by users performing their daily activities in a variety of environmental conditions. Thus, it is critical to ensure that those systems neither interfere with human activities nor harm the users involved. In this paper, we propose a framework for testing and verifying the safety and reliability of CPS services from the perspectives of CPS environments and users. The framework provides an environmentaware testing method by which the efficiency of testing CPS services can be improved by prioritizing CPS environments and by applying machinelearning techniques. The framework also includes a metric by which we can automate the test of the most effective services that deliver effects from physical devices to users. Additionally, the framework provides a computational model that assesses mental workloads to test whether a CPS service can cause cognitive depletion or contention problems for users. We conducted a series of experiments to show the effectiveness of the proposed approaches for ensuring the safety and reliability of CPS application services during the development and operation phases.

• 한국신재생에너지학회:학술대회논문집
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• 한국신재생에너지학회 2009년도 춘계학술대회 논문집
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• pp.243-246
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• 2009

To evaluate the building energy performance, many building simulation programs are used and its capabilities are developed. Despite of its increased capabilities the weather data used In the Building Energy performance evaluation, are still using the same limited set of data. This often forces users to find or calculate weather data such as illuminance, solar radiation, and ground temperature from other sources to calculate it. Also, proper selection of a right weather data set has been considered as one of important factors for a successful building energy simulation. In this paper, we describe TMY2 data, a generalized weather data format developed for use, and applied to Seoul region and examine the differences comparing to existing weather data. A set of 23 years raw weather data base has been developed to provide the weather data file for building energy analysis in Seoul.

• 한국콘텐츠학회논문지
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• 제15권2호
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• pp.419-432
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• 2015

본 연구는 국내의 중소 운수업체를 대상으로 하여 기업의 전략과 정보시스템 전략의 적합성 요인이 ERP 내부 성과에 조절적인 역할을 하는지를 분석하였다. 분석결과, 기업의 전략과 정보시스템 전략의 적합성 요인은 ERP 도입요인과 내부성과 간에 조절적 역할을 하고 있는 것으로 분석되었다. 즉, 기업의 전략과 정보시스템 전략의 적합성 요인은 독립변수로 설정된 최고경영자의 지원, 교육/훈련, 사용자 IT 역량, 업무 표준화/공식화, 정보기술 기반구조와 내부성과 간에 조절적인 역할을 하는 것으로 분석되었다. 위와 같은 분석결과에 따라 본 연구에서는 국내 중소 운수업체에서는 ERP 패키지를 도입할 경우, 기업 내부적으로 기업의 전략과 ERP 패키지 도입 전략이 적절하게 조화를 이룰 때 도입성과가 극대화 될 것이라는 연구결과를 얻을 수 있었다.

• 한국IT서비스학회지
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• 제22권6호
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• pp.55-70
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• 2023

This study conducted a fuzzy set qualitative comparative analysis study on culture and arts information portals to ensure practical and universal use and activation of culture and arts information portals. The capabilities and influence of affordances and system literacy according to user experience regarding accessibility to cultural arts information portals are as follows. First, physical affordances in the culture and arts information portal were key conditions for the culture and arts information portal user experience regarding system accessibility, system understandability, system usability, system usability, and system literacy. Second, the functional affordance of the user experience in the cultural arts information portal was relatively low and unimportant, and when the functional affordance was low, the user's system accessibility, system understanding, system usefulness, system usability, and system literacy were increased. Third, if the user's functional affordance and sensory affordance are low in the culture and arts information portal, the system accessibility, system understanding, system usability, and system literacy of the culture and arts information portal users are increased. Fourth, cultural arts information portals must build an innovative system with a systematic approach appropriate for the user base by linking system literacy capabilities with a focus on physical affordances.

• 한국정보통신학회논문지
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• 제13권2호
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• pp.309-314
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• 2009

기존 사무 환경에서 개인 PC를 이용하여 네트워크를 통해 프린터를 공유하는 경우 프린터와 직접 연결된 PC에 상당한 과부하가 발생한다. 프린터에 직접 연결된 PC 사용자는 개인 작업 시 이러한 과부하로 인해 불편함이 발생하게 된다. 본 논문에서는 이와 같은 문제점을 해결하고, 사무실 구성원들이 네트워크를 통해 원할 한 프린터 작업을 수행할 수 있도록 프린터 서버 역할을 수행 하는 Embedded Linux 기반의 Embedded Printer System을 구현 하였으며, 실제 환경에서 실험을 거쳐 성능을 검증하였다.

• Journal of Computing Science and Engineering
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• 제5권1호
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• pp.71-84
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• 2011

Pervasive applications such as digital memories or patient monitors collect a vast amount of data. One key challenge in these systems is how to extract interesting or unusual information. Because users cannot anticipate their future interests in the data when the data is stored, it is hard to provide appropriate indexes. As location-tracking technologies, such as global positioning system, have become ubiquitous, digital cameras or other pervasive systems record location information along with the data. In this paper, we present an automatic approach to identify unusual data using location information. Given the location information, our system identifies unusual days, that is, days with unusual mobility patterns. We evaluated our detection system using a real wireless trace, collected at wireless access points, and demonstrated its capabilities. Using our system, we were able to identify days when mobility patterns changed and differentiate days when a user followed a regular pattern from the rest. We also discovered general mobility characteristics. For example, most users had one or more repeating mobility patterns, and repeating mobility patterns did not depend on certain days of the week, except that weekends were different from weekdays.

• Journal of Communications and Networks
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• 제7권2호
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• pp.222-230
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• 2005

This article presents a field evaluation of an IP-based architecture for heterogeneous environments that has been developed under the aegis of the Moby Dick project, covering UMTS-like (universal mobile telecommunications system) TD-CDMA (time division-code division multiple access) wireless access technology, wireless and wired LANs. The architecture treats all transmission capabilities as basic physical and data-link layers, and replaces all higher-level tasks by IP-based strategies. The Moby Dick architecture incorporates mobile IPv6, fast handovers, AAA-control (authentication, authorisation, accounting), charging and quality of service (QoS) in an integrated framework. The architecture further allows for optimised control on the radio link layer resources. It has been implemented and tested by expert users, and evaluated by real users on field trials with multiple services available.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2006년도 하계종합학술대회
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• pp.957-958
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• 2006

PC users could experience some inconvenience when they use their PC that was physically connected to network printers shared by other people in the network due to the overload. This paper shows how to resolve this kind of overload problem and established the embedded printer system based on embedded Linux system which performs the printer server in order for any users in the office to do printing work more smoothly via current network. It's own capabilities and functions were verified throughout the various tests in practical environment.