• Asia pacific journal of information systems
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• 제27권4호
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• pp.191-215
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• 2017

This study investigated the antecedents and the performance impact of two types of Smartphone functions (communication vs. computing functions) in organizational environment and the moderating impact of Smartphone users' organizational roles. More specifically, identifying two distinct types of Smartphone functions such as communication functions and computing functions (including informational, social network, and resource management functions), we investigated the impact of three antecedents (Smartphone dependency, task mobility, and perceived critical mass) on the use of the two Smartphone functions and how organizational workers' perceived performance gains differ by using these two different Smartphone functions for their workplace activities. We tested our hypotheses with survey data collected from 176 organizational workers. Our findings suggest that Smartphone dependency, task mobility and perceived critical mass of Smartphone use are significantly associated with the use of the two different functions, and that the use of computing functions is more strongly associated with perceived performance gain than the use of communication functions. We also found that managerial roles played by individual workers differently moderate the impact of Smartphone use on perceived performance gain. The present findings enable researchers and practitioners to better understand the impact of Smartphone use in workplaces.

• International Journal of Knowledge Content Development & Technology
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• 제6권2호
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• pp.5-27
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• 2016

This research aims to explore the acceptance of Moodle as a teaching and learning tool by the faculty of the Department of Information Studies (IS) at Sultan Qaboos University (SQU) in the Sultanate of Oman. The researchers employed the Unified Theory of Acceptance and Use of Technology (UTAUT) to examine the effects of performance expectancy, effort expectancy, social influence and facilitating conditions on the behavioural intention of SQU faculty members to employ Moodle in their instruction. Data were collected by the interview method. Results showed the emergence of two faculty groups: one uses Moodle and one does not use Moodle. In group that uses Moodle, performance expectancy, effort expectancy, social influence, facilitating conditions and behavioural intention are positively related, thereby influencing the faculty members' use behavior. In addition to the aforementioned UTAUT constructs, four additional factors affect Moodle's adoption. These moderators are gender, age, experience and the voluntariness of use, amongst which gender exhibits the least influence on Moodle adoption. That is, male and female faculty generally both use the learning platform. Although some members of the group that does not use Moodle exhibit optimistic performance expectancy for technology, the overall perception in this regard for Moodle is negative. The other UTAUT constructs exert no influence on this group's adoption of the learning platform.

• Journal of Information Technology Applications and Management
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• 제23권2호
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• pp.153-176
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• 2016

This study investigated factors affecting the use intention of podcast service users based on the unified theory of acceptance and use of technology (UTAUT). Performance expectancy, effort expectancy, social influence, facilitating condition, hedonic motivation, innovativeness, and media credibility were used as independent variables in the model. The survey data from the users of the podcast portal 'podbbang' were analyzed with Smart PLS 2.0 to test the structural equation model. The results revealed that the podcast service user's effort expectancy, facilitating condition, hedonic motivation, and media credibility have a significant influence on use intention. However, the relationship between the podcast service user's performance expectancy, social influence, innovativeness, and use intention were not identified as significant.

• 한국정보시스템학회지:정보시스템연구
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• 제17권2호
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• pp.1-26
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• 2008

SCM is one of the important key issues in Internet-based business environment. This study intends to suggest a research model to measure the influence of environmental, organizational, information technology factors on organizational performance using the four perspectives of balanced scorecard (BSC). 9 independent variables and 4 dependent variables were adopted from existing literature review. 103 companies data were collected by survey. Four hypotheses in this study were generated to analyze the positive relationship of environmental, organizational, information systems on organizational performance with 4 perspectives of BSC. The results of hypothesis testing show as follows. First, organizational performance of learning and growth perspective has a positive influence of IS maturity, process innovation, top management support, use of SCM package, IS interoperability, and objectives sharing. Second organizational performance of infernal process perspective has a positive influence of process innovation, IS interoperability, objectives sharing, top management support, use of SCM package, competitiveness, and IS maturity. Third, organizational performance of customer perspective has a positive influence of IS interoperability, objectives sharing, process innovation, IS maturity, competitiveness, and use of SCM package. Finally, organizational performance of financial perspective has a positive influence of process in innovation, use of SCM package, IS maturity, objectives sharing, IS interoperability, and top management support. The contribution of this study is that it provides a conceptual framework and empirical evidences of the causal relationship between environmental, organizational, IS factor and organizational performance with 4 perspectives of BSC.

• 한국통신학회논문지
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• 제25권9A호
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• pp.1273-1281
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• 2000

In this paper we studied for multi-user detection system, which hold the merit of CDMA system and can enhance the system capacity. We designed actually realizable quasi-optimal multiuser detection system by use of linear equalizer on the concept that multiuser detection algorithm can be reduced by combining TDMA with CDMA. we call this the hybrid TDMA/CDMA system. And we proposed multiuser detection system, which can use PSAD and MSDD channel estimation method. As a result of performance analysis we acquired equal or much better performance by use of linear multichannel equalizer in the case of not so many user. And on the occasion of many user within cell we can also acquired much better performance in comparison with conventional single user detection system by use of hybrid TDMA/CDMA system.

• 정보화정책
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• 제27권3호
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• pp.39-55
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• 2020

본 연구는 중고령자의 디지털기기 이용동기, 디지털기기 이용태도, 디지털기기 이용성과의 요인 간 관계를 검증하기 위해 경로분석을 진행하였다. 실증분석을 위해, National Information Society Agency의 2018 디지털정보격차 실태조사를 사용하였으며 55세 이상 전체 조사 대상자 2,303명 중 결측치를 제거하여 1,664명을 최종분석 하였다. 구조모형의 경로계수를 살펴본 결과, 디지털기기 이용동기는 디지털기기 이용태도(표준요인 부하랑=0.847)에, 디지털기기 이용태도는 디지털기기 이용성과(표준요인 부하랑=0.745)에 통계적으로 유의한 영향을 미치는 것으로 나타났다. 본 연구는 디지털기기 이용동기가 바로 디지털기기 이용성과를 높이지는 않으나, 디지털기기 이용태도를 높이고, 디지털기기 이용태도는 디지털기기 이용성과를 높일 수 있음을 시사하였으며 중고령자의 디지털기기 이용을 활성화하기 위한 실천적·정책적 함의를 제시하였다는 점에 의의가 있다.

• 한국콘텐츠학회논문지
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• 제6권7호
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• pp.31-41
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• 2006

본 연구의 목적은 관리회계 정보특성과 정보기술구조간의 적합성이 AIS 성과에 미치는 영향을 분석하는데 있다. 본 연구에서는 관리회계정보 특성 변수로는 재무적 요인과 비재무적 요인을 이용하였으며, 정보기술구조는 Ahtuv 등 (1989), Fiedler 등 (1996)이 분류한 자료처리의 집중화와 분산화를 이용하였다. 표 본 기업은 상장기업을 무작위로 425 개를 선정하였으며 회수된 자료 중 137부를 분석에 이용하였다. 본 연구의 가설검증 결과를 요약하면 다음과 같다. 관리회계정보특성 변수와 정보기술구조 변수간의 적합도 검증에서는 자료처리가 집중화 된 기업에서는 재무적 정보를 활용하는 기업이 비재무적 정보를 활용하는 기업보다 AIS 성과가 높게 나타났다. 그러나 통계적으로는 유의성이 없었다. 자료처리가 분산화 된 기업에서는 비재무적 정보를 활용하는 기업이 재무적 정보를 활용하는 기업보다 AIS 성과가 높게 나타났다. 또한 통계적으로도 높게 나타났으며, p<0.01 수준에서 유의하였다.

• Journal of Information Processing Systems
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• 제1권1호
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• pp.49-54
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• 2005

With the recent advances in Micro Electro Mechanical System (MEMS) technology, low cost and low power consumption wireless micro sensor nodes have become available. However, energy-efficient routing is one of the most important key technologies in wireless sensor networks as sensor nodes are highly energy-constrained. Therefore, many researchers have proposed routing protocols for sensor networks, especially cluster-based routing protocols, which have many advantages such as reduced control messages, bandwidth re-usability, and improved power control. Some protocols use information on the locations of sensor nodes to construct clusters efficiently. However, it is rare that all sensor nodes know their positions. In this article, we propose another cluster-based routing protocol for sensor networks. This protocol does not use information concerning the locations of sensor nodes, but uses the remaining energy of sensor networks and the desirable number of cluster heads according to the circumstances of the sensor networks. From performance simulation, we found that the proposed protocol shows better performance than the low-energy adaptive clustering hierarchy (LEACH).

• 한국산업정보학회논문지
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• 제23권1호
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• pp.97-108
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• 2018

본 연구는 UTAUT 모형을 활용하여 인터넷 전문은행의 사용 의도에 영향을 미치는 요인을 분석하는 것이다. 이를 위해 성과기대, 노력 기대, 사회적 영향, 채널 신뢰, 전문은행 신뢰를 독립 변수로 하고, 사용 의도를 종속 변수로 설정하여 연구 모델을 제시하였다. 인터넷 전문은행 미경험자인 145명의 대학생을 대상으로 실증 분석한 결과, 성과 기대, 사회적 영향, 채널 신뢰는 사용 의도에 유의적인 영향을 미치는 것으로 나타났으며 성과 기대가 가장 큰 영향을 미치는 것으로 나타났으며, 노력 기대와 전문은행 신뢰는 영향이 없는 것으로 나타났다.

• Asia pacific journal of information systems
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• 제12권3호
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• pp.45-70
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• 2002

This paper examines the role of distance learning self-efficacy, belief in one's capabilities of using a system in the accomplishment of web-based distance learning, in predicting user intention to use and performance of distance learning system. It used self-efficacy theory and technology acceptance model(TAM) to build a model that predicts relationships between antecedents to students' distance learning self-efficacy assessments and their behavioral and attitudinal consequences. The model was tested using LISREL analysis on the sample of 250 students who have worked with the Distance Learning System. The results indicated partial support for the conceptual model. In accordance with TAM, perceived usefulness had strong direct effects on intention to use and performance, while perceived ease of use had both direct and indirect effects on intention to use, but not performance. Distance learning self-efficacy had only direct effect on perceived ease of use to use. Computer experience was found to have a strong positive effect on distance learning self-efficacy, and computer anxiety had a negative effect on distance learning self-efficacy. Implications of these findings are discussed for researchers and practitioners.