• The Journal of Korean Association of Computer Education
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• v.17 no.1
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• pp.65-73
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• 2014

The purpose of this study is to examine how time management, usefulness, and interest predict m-learning outcomes. For this study, 144 high school students participated in m-learning activities during science classes. After 5 week of classes, they responded the following surveys: time management, usefulness, interest, satisfaction, perceived achievement and learning persistence. Multiple regression analyses with correlation applied to this study as a data analysis method. The results showed that time management, usefulness, interest significantly predicted learning satisfaction and persistence. In addition, time management and usefulness significantly predicted perceived achievement, Therefore, these findings imply that time management, usefulness should be considered for designing m-learning activities in high school science class.

• Journal of the Korean Society of Clothing and Textiles
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• v.39 no.2
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• pp.161-174
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• 2015

This study investigates relationships among mobile fashion shopping characteristics, perceived usefulness, perceived enjoyment, and purchase intention as well as examines the mediating effect of ease of use in mobile fashion shopping. A final sample of 379 (from the distributed questionnaires) was used for data analysis. The statistical analyses used for the study were PASW 18.0 to verify the reliability of items and AMOS 16.0 to conduct confirmatory factor analysis and structural equation modeling. The results were as follows. Both measurement models and structural models showed an acceptable model fit. Three constructs of mobile fashion shopping characteristics were significantly associated with perceived usefulness, perceived enjoyment, and ease of use. In addition, ease of use influenced perceived usefulness and perceived enjoyment. Perceived usefulness and perceived enjoyment had a positive impact on attitude and attitude influenced purchase intention positively. Finally, there was a mediating effect of ease of use on the relationship of mobile fashion shopping characteristics, perceived usefulness and perceived enjoyment. The findings provide useful implications for fashion marketers to build effective mobile fashion shopping strategies.

• The Journal of Asian Finance, Economics and Business
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• v.8 no.8
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• pp.409-419
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• 2021

The study examines the effects of digital accounting on financial reporting quality, accounting information usefulness, and strategic decision effectiveness of listed firms in Thailand through digital transformation as the moderating variable. A total of 313 listed firms in Thailand were selected as the sample for the study. Structural equation model and multiple regression analysis are applied to test the research relationships. The results of the study show that digital accounting has a significant effect on financial reporting quality, accounting information usefulness, and strategic decision effectiveness. Financial reporting quality significantly affects both accounting information usefulness and strategic decision effectiveness while accounting information usefulness has a significant effect on strategic decision effectiveness. Both financial reporting quality and accounting information usefulness mediate the digital accounting-strategic decision effectiveness relationship. In addition, digital transformation moderates the digital accounting-financial reporting quality relationship and the digital accounting-accounting information usefulness relationship, but it does not moderate other relationships. Accordingly, digital accounting plays a significant role in determining and explaining firms' goal achievement. Executives are suggested to learn, invest and utilize the digital accounting system in the organization to ensure goal achievement and enhance organizational sustainability.

• Journal of Digital Convergence
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• v.4 no.2
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• pp.41-49
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• 2006

This study tried to find the determine of intention to mobile game service acceptance. Our research proposes the theoretical model consisting of factors such as perceived usefulness, perceived ease of using the mobile phone, perceived price. The data was analyzed using LISREL based on th structural equation modeling, a second-generation multivariate technique. The result shows that the perceived usefulness have significant effects on the mobile game service acceptance.

• 한국디지털정책학회:학술대회논문집
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• 2006.06a
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• pp.399-407
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• 2006

This study tried to fine the determine of intention to mobile game service acceptance. Our research proposes the theoretical model consisting of factors such as perceived usefulness, perceived ease of using the mobiliphone, perceived price. The data were analyzed using LISREL based on th structural equation modeling, a second-generation multivariate technique. The result show that the perceived usefulness have significant effects on the mobile game service acceptance.

• The Journal of Information Systems
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• v.19 no.3
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• pp.209-236
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• 2010

Recently, utilization of mobile Internet services is rapidly increasing. To properly accelerate the vitalization of mobile Internet usage, we have to know exactly about the factors affecting potential users' value recognition and intention to use. Technology acceptance model (TAM) is one of the most powerful reference framework for the individual user's adoption of IT innovations. This research borrowed core concept of TAM, and tried to explain users' intention to use mobile Internet by understanding the direct and indirect effects of subjective norm and perceived usefulness. To increase the explanatory power of the model, this paper introduced personal innovativeness as a key moderator variable. The research findings include; i) subjective norm has strong positive influence on perceived usefulness and intention to use, ii) perceived usefulness has positive influence on intention to use, iii) the influence of subject norm is greater than that of perceived usefulness, iv) positive influence of subjective norm on the perceived usefulness and intention to use are significantly stronger in the case of low personal innovativeness sub-group than the case of high personal innovativeness sub-group, and v) high personal innovativeness sub-group have shown strongly positive influence of perceived usefulness on the intention to use while there is no such significant relationship in the case of low personal innovativeness sub-group. Based on these findings, this paper proposed several guidelines to increase the adoption and the usage of mobile Internet; i) word-of-mouth is extremely important, ii) to form a good word-of-mouth, it will be very important to make early adopters and heavy users have positive direct experiences of using mobile Internet.

• Journal of Korea Society of Digital Industry and Information Management
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• v.11 no.3
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• pp.159-177
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• 2015

As smart phones become more common nowadays, mobile instant messengers such as kakao talk and line are used as essential communication tools exchanging information between individuals. Also, the mobile instant messengers extend their use to business area beyond communication between individuals. This study is on how factors of mobile instant messenger such as perceived security, perceived privacy, perceived enjoyment and perceived interactivity affect business continual usage intention through perceived usefulness. The proposed model is based on Expectation-Confirmation Theory of Oliver and Technology Acceptance Mode of Bhattacherjee. For an analysis, 159 survey responses were collected from the office workers in Seoul and nearby cities, having experiences of mobile instant messengers. To validate the proposed research model, PLS analysis is performed with the valid 154 questionnaires. The path analysis results are as follows. First, perceived security has a positive effect on expectation-confirmation. Second, perceived enjoyment has a positive effect on perceived usefulness. Third, perceived interactivity has a positive effect on both perceived usefulness and expectation-confirmation. Fourth, perceived usefulness has a positive usefulness on satisfaction and continual usage intention of mobile instant messenger. Last, expectation-confirmation has a positive effect on perceived usefulness, and satisfaction has a positive effect on continual usage intention of mobile instant messenger. Since the mobile instant messenger may bring a pressure of work and a violation of privacy, it is necessary that the company provide a guideline for use of the mobile instant messenger and establish the in-house mobile instant messenger system.

• Journal of Oriental Neuropsychiatry
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• v.3 no.1
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• pp.91-106
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• 1992

The effectiveness, the safety and the usefulness of HPS-A(An Jung San with Chyag Yag Kam Cho Tang), herbal digestive, was examined on 32 patients complained digestive symptoms. This medicine was administered 1 package per 1 time 3 times per 1 day, during 2 weeks. From the examination of the improvemnt and the safety mainly by subjective symptoms, the usefulness was gained. The results were as follows ; 1. In the improvement rate of susbjective symptoms, high rate symptoms was gastric distension, anorexia, heart burn, gastric discomport, dyspepsia, acrid eructation, indigestion, nausea. 2. The improvment over moderate effective was 85.7% after 1 week 96.4% after 2 weeks. The 4 cases breaked medicine during experimental period were all over moderate offectiveness. 3. There weren't any cases complaind particular problem about safety except for 1 case complained mild pushing up of heat. There weren't also any side effect of medicine on common blood count, blood chemistry and urinalysis. 4. In the dicision of usefulness, 19cases(59.4%) were usefulnesss, 12cases(37.5%) were moderate usefulness, 1 case was uselessness(3.1%). So the cases over moderate usefulness were 31 and rate was 96.9%. 5. The usefulness rates according to physical features were all over 95.5% in sturdiness, middle feature and infirmity. So the rates were no relations with the features. 6. The usefulness rates over moderate usefulness according to total seriousness were all over 90% in high, middle, and mild cases. So the rates were no relations with the seriousness. Totally HPS-A was a medicine that was highly effective, safe and useful to patients complained various digestive symptomes.

• Journal of Information Technology Applications and Management
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• v.14 no.2
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• pp.27-47
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• 2007

In an effort to apply IT to practices of learning, universities are trying to implement e-Learning systems and expanding the extent of their usage. Nowadays, e-Learning systems are not only used for conducting web-based distance learning, but also used for supporting traditional classes education by encouraging communication and information sharing between instructors and learners or among the learners. There is relatively lack of studies on the exploitation of e-Learning systems in the traditional classes, in comparison with a distance education. Specifically, howe-Learning systems could support the traditional class and/or which benefits e-Learning systems could offer in the classes are among the important issues. In this study, we suggest that e-Learning systems would be the rich media to communicate and exchange information among people who participate in a class. We derive key variables like media richness and media experience from Media Richness Theory and from Channel Expansion Theory. Moreover, Media usefulness and Satisfaction of a learner with e-Learning system is drawn from the literature on IS success. We examine the effects of perceived media richness, media usefulness, and media experience on leaner's satisfaction with e-Learning systems. In addition, we also investigate learner's media usefulness perception which is positively related to media richness and media experience. Finally, learner's experience with e-Learning systems affects perceived media richness. Based on the results of an empirical test. we first suggest that perceived media richness with e-Learning systems contributes to increase media usefulness and satisfaction of a learner. Second, media experience is an important predictor of media richness and media usefulness perception. Consequently, the result can support Channel Expansion Theory. Finally, media usefulness perception affects learner's satisfaction with e-Learning systems.

• The Journal of the Convergence on Culture Technology
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• v.6 no.4
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• pp.411-417
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• 2020

The purpose of this study was to suggest strategies of team project based learning for undergraduate students by exploring the effects of perceived usefulness on satisfaction in team project-based learning. Also, this study investigated the effects of autonomy support, self-efficacy for group work, and perceived interaction on perceived usefulness. The findings of this study revealed that perceived usefulness affects satisfaction in team project-based learning. Moreover, the results showed that autonomy support and self-efficacy for group work influence perceived usefulness. The findings of this study imply that perceived usefulness is critical team project-based learning is critical to successful learning. Additionally, autonomy support and self-efficacy for group work enables users to perceive usefulness in team project-based learning.