• Asia pacific journal of information systems
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• v.34 no.1
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• pp.351-371
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• 2024

This study aims to assess the impact of chatbot usability and demographics on continuous intention to use across different sectors. The research employed Braun's Bot Usability Scale (BUS11) to measure chatbot usability, focusing on accessibility, quality, conversation quality, privacy risk, and response time. A total of 187 participants completed a survey as part of this study. Variance-based SEM was utilized to examine relationships and test hypotheses. This study contributes to the ongoing discourse on chatbot adoption and user behaviour. It enhances the understanding of chatbot usability, highlighting the role of age in continued intention to use chatbots. The findings suggest that different age groups may possess specific preferences and expectations regarding chatbot usability. These differing preferences can influence their intention to continue using this technology. The study reveals that chatbot usability significantly impacts continuous intention to use and that age moderates the relationship between perceived conversation quality, information, privacy, security, and continuous intention to use. Based on the study's results, it is recommended that chatbot designers enhance usability to promote long-term adoption and usage.

• International conference on construction engineering and project management
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• 2024.07a
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• pp.160-166
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• 2024

In recent years, as buildings have become taller and taller, the continued usability of elevators after earthquakes has become an important issue. Conventional seismic design of elevators has focused mainly on inertial forces caused by earthquakes, but the influence of the story drift angle of buildings on elevator behavior has been unclear. Therefore, the objective of this study was to clarify the influence of the story drift angle of a building caused by an earthquake on the behavior of elevators through an experiment. The experiment specimens were the counterweight, guide rails, and surrounding components selected from the actual elevator components and mounted on a one-story steel pin frame. A static experiment was conducted using a hydraulic jack to apply force to the specimen by imposing the story drift angle on the steel frame. During the experiment, the reaction force at the end of the jack was monitored, and the displacement and strain of the counterweight, guide rails, and surrounding components were measured. The results of the experiments in one direction showed that even when the elevator components were subjected to a larger story drift angle than assumed in the seismic design of the building, no damage occurred that could lead to fallout.

• Journal of Digital Convergence
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• v.19 no.5
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• pp.295-305
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• 2021

The purpose of this study is to empirically verify how UI usability of mobile healthcare applications affects the perception of technostress and continuous use of elderly users. Through this, the effect of UI usability of mobile healthcare applications on technostress and continuous use intention was demonstrated for 199 people aged over 60. As a result, all four sub-factors of UI usability had a significant effect on technostress, and the magnitude of the influence was found to be in the order of content, process, design, and system. On the other hand, it was found that technostress had a significant effect on the intention of continued use. Through the above results, a UI design strategy that can lead to continuous use by relieving the technostress experienced by the elderly was suggested. This provides academic and practical implications for the future development and service direction of mobile healthcare applications for the elderly.

• The Journal of the Korea Contents Association
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• v.13 no.3
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• pp.99-108
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• 2013

This research attempts to identify N-screen users' motivational and dissatisfying factors in relation to their willingness for continued future use of the service. An on-line survey was conducted (N=558) to reveal five major factors for N-screen use: Medium usability (interface usability and daily usefulness), Socialness (potential for social use with family and friends), Mobility (use without restraints of time and space), Contents (diversity of contents catalogue and related information search), and Habitual use. With exception of Contents factor, four of those factors were proven to be meaningful predictors of the users' willingness for continued future use of N-screen service. Meanwhile, two factors were extracted as the major source for N-screen users' dissatisfaction: Customer service (dissatisfaction associated with the service itself) and Contents (dissatisfaction relating to contents use). The effect of those two dissatisfaction factors was examined. The results show that Contents dissatisfaction, in comparison with Customer service dissatisfaction, was a more powerful predictor for discontinuing of N-screen service use.

• Management & Information Systems Review
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• v.32 no.5
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• pp.19-43
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• 2013

The diffusion of new technology has traditionally focused on the adoption perspective. Researchers refer this use-diffusion paradigm to behaviors of use after adoption. This study intends to analyse the influential factors of use-diffusion and continual use of website and applications in medical service. To achieve this a use-diffusion model as a conceptual frame work is suggested. Medical information quality, personal innovativeness and subjective norm are assumed as antecedent variables medical website and application's rate of use, variety of use, and continued use intention as result variables. According to the empirical study results medical information quality, web based application usability, personal innovativeness, and subjective norm have a meaningful influence on medical service consumer's use-diffusion patterns. Also pattern of use influences the continued use intention. This study provides an opportunity to understand medical service consumer's behavior after website and application use adoption and suggests further directions for establishing medical service online marketing strategy by determining influential factors of use-diffusion and continued use of medical online marketing tools.

• Science of Emotion and Sensibility
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• v.15 no.4
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• pp.415-424
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• 2012

According to introduction of Well-Being lifestyle and ageing society, vital sign monitoring system which can be continued measurement of vital sign has been increased their important in field of the healthcare. Under this trend, Respiration monitoring system has been studied and developed in a various way to apply continued monitoring and non-conscious monitoring system. But, Study of the respiration monitoring system based on consumer needs and usability test is insufficient. In this study, Textile capacitive pressure sensor(TCPS) of belt type was developed and tested it's utility and subjective sensibility. TCPS measures respiration signals and can be derived in real time monitoring. As a result, monitoring respiration using textile capacitive pressure sensor offers a promising possibility of convenient measurement of respiration rate (correlation (r＝0.9553, p<0.0001). In the result of usability and wearability test, all of categorizes(perceived change, wearability, movement, facility of management, usefulness) were received favorable evaluation on usability test( mean value : 3.8), and suitable location of TCPS in the clothing is deriven on the abdomen part. According to synthetical results, Basic smart clothing design based on respiration monitoring system is proposed.

• Smart Media Journal
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• v.7 no.2
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• pp.60-70
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• 2018

Recently with the entrance to the aging society, the demand on health care services is being increased. However, there are still few GUI types of research considering the characteristics of new-silver generation progressively preparing for their golden(old) age. As the new-silver generation showed less reluctance to the information acquired through the Internet comparing to general seniors, but it is urgent to conduct researches about GUI of mobile healthcare services considering their physical, psychological and social characteristics. Hence, the purpose of this study was to propose some guidelines of GUI evaluation so that new-silver generation being emerged as main consumer group in future medical consumption could efficiently use mobile health care services. As the research methods, first, this study analyzed the characteristics of new-silver generation through reviewing literature and previous studies and understood the status quo of mobile health care services, and second, it analyzed the visual composition factors being preferred in each field of current mobile healthcare application and drew out a usability evaluation matrix of mobile GUI design appropriate for elderly people's characteristics. Third, with the drawn evaluation matrix, this study conducted the usability evaluation of 8 subjects in new-silver generation ranging from 57 years old to 65 years old through a heuristic way. This study expects that it would be contributed in increasing the GUI usability by proposing some guidelines for GUI being appropriated for new-silver generation user's characteristics, and thinks that researches about developing health-care mobile applications will be continued in future at the same time.

• Journal of Korean Society on Water Environment
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• v.33 no.6
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• pp.696-714
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• 2017

Simple material budget models were developed to predict the spring season (March ~ May) water quality for a river-type reservoir Paldang, in the Republic of Korea. These models are available at mixed water bodies whose light intensity is negligible at the bottom. The calculated data from the models fit quite well with field data collected for 30 years, from 1988 to 2017. The apparent settling velocity of total phosphorus was estimated to be $110m\;d^{-1}$. The critical hydraulic load that determines the usability of phosphorus for algal production appeared to be about $2.0m\;d^{-1}$. When a hydraulic load was larger than the critical value, the concentrations of chlorophyll ${\alpha}$ ($Chl.{\alpha}$), chemical oxygen demand (COD), and 5-day biochemical oxygen demand BOD in the reservoir water became insensitive to internal algal reactions. The model analysis showed that the allochthonous COD continued to increase while the allochthonous BOD slightly decreased after 1999. The decrease of allochthonous BOD is due to the expansion of sewage and wastewater treatment plants in the watershed. The increase of allochthonous COD seems to result from the increase in anthropogenic non-point sources as well as the increase in the discharge of natural organic matters due to climate change. Organic matter of algal origin continued to increase until the mid-2000s, but recently it has decreased as the phosphorus concentration has decreased. The COD and BOD of algal origin increased from 35 % and 27 % during 1988 ~ 1994 to 43 % and 40 % during 2000 ~ 2010, respectively, and then decreased to 25 % and 28 % during 2011 ~ 2017.

• The Journal of the Korea institute of electronic communication sciences
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• v.2 no.4
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• pp.228-235
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• 2007

The Laser distance instrument in past was used mainly with military affairs and the helicopter loaded measures the distance with target and the firing body used in the tank. The military suspicion case measurement distance was scope until of tens km consequently from possibility km and under measuring should have been boiled the low error was 5m husbands and wives. Like this under using should have been boiled the effort was being continued the Laser distance instrument will be able to apply in industry from the present paper hereupon and the usability developed verified.

• Journal of Korea Society of Digital Industry and Information Management
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• v.20 no.1
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• pp.47-58
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• 2024

The serving robot is defined as a robot that carries cooked food to a customer table or collects and carries bowls after eating. This study presented a research model to find out the causal relationship between customer satisfaction and continuous use intention through the three factors of serving robot service quality. In addition, in order to empirically verify the above research model, a survey was conducted on customers using serving robots within the last 5 months. 300 copies were analyzed using SPSS 20 as the final analysis, excluding unfaithful responses. The main findings of this study are as follows. First, serving robot service quality (typical) found to have significant effect on customer satisfaction and continuous use intention. Second, it was found that serving robot service quality (reliability) had a significant effect on customer satisfaction and continuous use intention. Third, it was found that serving robot service quality (ease) did not significantly affect customer satisfaction and continuous use intention.