• Title, Summary, Keyword: AIS Utility

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An Empirical Study on the Impact of Job Performance to AIS Utility Value (회계정보시스템 유용성이 업무성과에 미치는 영향에 관한 실증적 연구)

  • Kim Dong-Il
    • The Journal of the Korea Contents Association
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    • v.5 no.5
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    • pp.266-272
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    • 2005
  • This study is to empirically analyze the effects on job performance of Accounting Information Systems, Analysis methods were used to Cronbach's Alpha analysis, Factor analysis, analysis of variance(ANOVA) and regression in odor by the contingency grouping method. The results of this study are as follows : First, The regression analysis had effects on AIS utility and job performance. Second, The Analysis of variance(ANOVA) had non-effects on systems operating degree and systems satisfaction. Third, The input variables of information accuracy and systems satisfaction had additional effect about IT capability.

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Optimization of Resource Allocation for Inter-Channel Load Balancing with Frequency Reuse in ASO-TDMA-Based VHF-Band Multi-Hop Data Communication System (ASO-TDMA기반 다중-홉 VHF 대역 데이터 통신 시스템의 주파수 재사용을 고려한 채널간 부하 균형을 위한 자원 할당 최적화)

  • Cho, Kumin;Lee, Junman;Yun, Changho;Lim, Yong-Kon;Kang, Chung G.
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.40 no.7
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    • pp.1457-1467
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    • 2015
  • Depending on the type of Tx-Rx pairs, VHF Data Exchange System (VDES) for maritime communication is expected to employ the different frequency channels. Load imbalance between the different channels turns out to be a critical problem for the multi-hop communication using Ad-hoc Self-Organizing TDMA (ASO-TDMA) MAC protocol, which has been proposed to provide the connectivity between land station and remote ship stations. In order to handle the inter-channel load imbalance problem, we consider a model of the stochastic geomety in this paper. After analyzing the spatial reuse efficiency in each hop region by the given model, we show that the resource utility can be maximized by balancing the inter-channel traffic load with optimal resource allocation in each hop region.