• 아동학회지
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• 제13권2호
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• pp.53-64
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• 1992

The purpose of the present research was to investigate developmental trends in children's class-inclusion performance and to examine the influence of task characteristics(provision or deprivation of quantitative information and perceptual information) on a class-inclusion task. The subjects of this study were 96 children, 12boys and 12girls at each age level. 5, 6. 7 and 8 years of age. The experimental materials consisted of 12 stimulus boards which were constructed on the basis of picture cards used by Judd and Mervis(1979) and Lane and Hodkin(1985). The class-inclusion tasks were individually administered by the researcher. The data were analyzed by the statistical methods of t-test, one-way ANOVA and Duncan multiple range test. The results showed that (1) There were significant age differences in children's class-inclusion performance. That is, children's performance scores on the class-inclusion task increased with age.: (2) There were significant task characteristics differences in children's class-inclusion performance. That is, children performed better on the deprivation of quantitative information task than on the provision of quantitative information task.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제9권12호
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• pp.4950-4966
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• 2015

Cloud providers now face the problem of estimating the amount of computing resources required to satisfy a future workload. In this paper, a virtual machine provisioning (VMP) mechanism is designed to adapt workload fluctuation. The arrival rate of forthcoming jobs is predicted for acquiring the proper service rate by adopting an exponential smoothing (ES) method. The proper service rate is estimated to guarantee the service level agreement (SLA) constraints by using a diffusion approximation statistical model. The VMP problem is formulated as a facility location problem. Furthermore, it is characterized as the maximization of submodular function subject to the matroid constraints. A greedy-based VMP algorithm is designed to obtain the optimal virtual machine provision pattern. Simulation results illustrate that the proposed mechanism could increase the average profit efficiently without incurring significant quality of service (QoS) violations.

• Journal of Communications and Networks
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• 제4권4호
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• pp.363-369
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• 2002

Towards the deployment of 3rd generation systems, Virtual Home Environment (VHE), stemming from 3GPP, appears to be a powerful concept advocating the provision and delivery of personalized services to roaming users across network and terminal boundaries. This paper aims to expose the pathway for materializing the VHE concept, via the specification, implementation and evaluation of a prototype. Core aspects for realizing the concept such as the business and roaming models are presented, while a VHE enabling architecture utilizing key technologies (OSA/Parlay, MExE, and USAT) is introduced. The proposed architecture has already been evaluated by performing an initial trial demonstration. Currently it is being extended to support VHE service provision to roaming users, an aspect to be addressed by the final trial.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2003년도 춘계학술대회 논문집
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• pp.222-231
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• 2003

After the reform of rail industry, a system to evaluate service qualities is required for the continuous improvement of railway service and the strength of competitiveness. This research provides evaluation categories and indices which are considered to be suited to the evaluation of rail service qualities. This study provides 4 categories and 11 indices to assess the rail service qualities: provision-operation interval/average operation speed, reliability-regularity/operation cancellation rate, safety- train usage term/facilities for the weak, client satisfaction- easiness of reserving and purchasing of tickets/comfort of queuing facilities/ kindness of train crews/ pleasantness of trains/provision of information, etc.

• 한국문헌정보학회지
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• 제54권1호
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• pp.71-88
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• 2020

본 연구의 목적은 국립세종도서관 정책정보서비스의 고도화를 위해 서비스 현황 및 문제점을 파악하고, 이를 바탕으로 개선 전략을 제시하는데 있다. 이를 위해 정책정보서비스 제공자와 이용자를 면담 조사하였으며, 서비스 제공 및 이용 상의 문제점을 파악하였다. 서비스 제공자 면담을 통해 서비스 제공 체계의 분산 및 이원화에 따른 문제점과 서비스 유형별 제공 상의 문제점을 식별하였고, 서비스 이용자 면담을 통해 주요 이용자 유형, 서비스 이용 전반에 대한 인식, 서비스 유형별 이용 상의 문제점, 정책정보 이용절차 상의 문제점을 제시하였다. 연구결과에 기초하여 개선 전략을 여섯 영역(수집, 서비스, 조직, 시스템, 홍보, 협력)으로 나누어 제안하였다. 이들 전략을 바탕으로 정책정보서비스의 개선이 이루어진다면 정책정보 이용자의 정보요구를 효과적으로 충족시켜 서비스 이용의 활성화에 기여할 수 있을 것이다.

• 대한교통학회지
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• 제28권3호
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• pp.39-49
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• 2010

본 연구에서는 감성공학적 분석방법론을 이용하여 운전자가 감성적인 측면에서 효과적으로 반응할 수 있는 교통안전 경고정보 제공방식 도출을 위한 연구를 수행하였다. 교통안전 경고정보는 운전자에게 전방의 위험요소를 미리 알려주어 사고회피를 위한 적절한 반응을 유도하는 역할을 하며 네비게이션과 같은 차내단말기를 통해 제공될 수 있다. 경고정보는 정보 제공방식들의 조합으로 구성되며 9개 시나리오를 설정하고 두 번의 설문조사를 시행하였다. 의미미분법, 상관분석, 수량화I류 이론을 이용한 감성공학I류 분석방법을 통해 연구를 진행하였으며, 성별차이에 따른 운전자 감성특성을 분석하였다. 분석결과 성별차이에 따라 각 정보의 제공방식에 대해 운전자가 느끼는 감성정도가 전체적으로 차이가 나는 것으로 분석되었다. 제공방식의 조합은 '청각적 요소: Beep음+음성안내', '메시지창: Text+픽토그램', '배경점멸: 빨간색 점멸'이 운전자의 감성정도와 선호도가 높게 나타났다. 본 연구의 결과는 운전자의 감성특성을 고려한 효과적인 교통안전 경고정보 설계 및 제공을 위한 유용한 자료로 활용될 것으로 기대된다.

• 한국문헌정보학회지
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• 제57권1호
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• pp.387-408
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• 2023

본 연구는 공공도서관의 복지서비스정보 제공의 필요성을 논하고, 복지정보를 효율적으로 수집·선정·제공하는 방안을 모색하는데 그 목적이 있다. 연구 수행을 위해 문헌조사, 사례조사, 설문조사, 인터뷰를 실시하였다. 연구 참여자의 86.7%는 공공도서관의 복지정보 제공이 필요하다고 하였다. 복지정보는 그 생산주체에 따라 크게 네 가지 유형으로 나눌 수 있다. 복지정보 수집·선정은 네 가지 정보 유형에 따라 달리한다. 복지정보는 그 유형 및 도서관의 종류에 따라 정보의 구성 요소를 달리해서 제공한다. 도서관 홈페이지를 통해 복지정보를 제공하고, 이 경우 복지정보를 웹페이지 형태와 게시판을 이용하여 홈페이지에 올린다.

• 한국IT서비스학회지
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• 제12권2호
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• pp.55-71
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• 2013

Despite the growing interest in technostress phenomenon of employees in organizations, few guidelines exist about how mangers can effectively control their technostress. Accordingly, scholars should pay greater attention to how firms can successfully manage employees' technostress. This study conceptually developed and tested a research model for understanding the influence of technostress on psychological and behavioral strains. In addition, we tested technical support provision as a moderator. We obtained 107 samples through a survey questionnaire, and data were analyzed based on structural equation modeling (SEM). As a result, it was empirically demonstrated technostress decreases job satisfaction and individual productivity. We also found that technical support provision have moderating effects on the relationship of technostress and job satisfaction/individual productivity.

• 한국콘텐츠학회:학술대회논문집
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• 한국콘텐츠학회 2014년도 춘계 종합학술대회 논문집
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• pp.197-198
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• 2014

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제14권4호
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• pp.1520-1542
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• 2020

Traditional software testing typically uses many physical resources to manually build various test environments, resulting in high resource costs and long test time due to limited resources, especially for small enterprises. Cloud computing can provide sufficient low-cost virtual resources to alleviate these problems through the virtualization of physical resources. However, the provision of various test environments and services for implementing software testing rapidly and conveniently based on cloud computing is challenging. This paper proposes a multilayer cloud testing model based on cloud computing and implements a hybrid cloud testing system based on virtual machines (VMs) and networks. This system realizes the automatic and rapid creation of test environments and the remote use of test tools and test services. We conduct experiments on this system and evaluate its applicability in terms of the VM provision time, VM performance and virtual network performance. The experimental results demonstrate that the performance of the VMs and virtual networks is satisfactory and that this system can improve the test efficiency and reduce test costs through rapid virtual resource provision and convenient test services.