• Proceedings of the Korea Institutes of Information Security and Cryptology Conference
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• 2002.11a
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• pp.27-30
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• 2002

본 논문에서는 이동 단말기를 이용해 외부 네트워크에서 홈 네트워크로 안전하게 접근을 하기 위한 방법을 제시한다. PDA(Personal Digital Assistants)와 같은 이동 단말기가 발달함에 따라 외부 네트워크에서 흠 네트워크에 접속하여 가전 장비들을 제어하는 연구가 매우 중요하다. 그러나 방화벽만으로 홈 네트워크의 장비에 안전하게 접속하여 제어하기에는 많은 문제점을 지니고 있다. 본 논문에서는 외부네트워크에서 흠 네트워크로의 안전한 접근을 위해서 가상 사설망(Virtual Private Network)을 홈 네트워크에 적용하는 방법을 제시한다.

• The Journal of Information Systems
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• v.12 no.2
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• pp.41-56
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• 2003

The objective of this study is to explore the effects of e-teaming users' self-efficacy and perceived service quality for e-teaming staffs such as instructors or teaching assistants on two main perceptions for e-learning systems in a view of information technology - perceived ease of use and perceived usefulness which have been considered as important antecedents for acceptance of information technology so called in Technology Acceptance Model. For this purpose, we suggest a research model and test it empirically by sampling in students of virtual universities. In result, all hypotheses except the relationship between academic self-efficacy and perceived usefulness are accepted. This result implies that self-efficacy for computers and service quality for staffs such as instructors or teaching assistants should be considered as important ones for success of e-learning systems in addition to those related with information technology.

• Journal of Information Technology Services
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• v.20 no.5
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• pp.189-207
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• 2021

Voice interaction combined with artificial intelligence is poised to revolutionize human-computer interactions with the advent of virtual assistants. This paper is analyzing interactive elements of AI-based voice recognition services such as sympathy, assurance, intimacy, and trust on intention to use. The questionnaire was carried out for 284 smartphone/smart TV users in Korea. The collected data was analyzed by structural equation model analysis and bootstrapping. The key results are as follows. First, AI-based voice recognition service characteristics such as sympathy, assurance, intimacy, and trust have positive effects on interactivity with the AI-based voice recognition service. Second, the interactivity with the AI-based voice recognition service has positive effects on intention to use. Third, AI-based voice recognition service characteristics such as interactional enjoyment and intimacy have directly positive effects on intention to use. Fourth, AI-based voice recognition service characteristics such as sympathy, assurance, intimacy and trust have indirectly positive effects on intention to use the AI-based voice recognition service by mediating the effect of the interactivity with the AI-based voice recognition service. It is meaningful to investigate factors affecting the interactivity and intention to use voice recognition assistants. It has practical and academic implications.

• Journal of the Korea Convergence Society
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• v.12 no.11
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• pp.193-206
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• 2021

Artificial Intelligence (AI) has been inserted into people's lives through Intelligent Virtual Assistants (IVA), like Alexa. Moreover, intelligent systems have expanded to design studios. This research delves into designers' perspectives on developing AI-based practices and examines the challenges of adopting future intelligent design assistants. We surveyed UX/UI professionals in Brazil to understand how they use IVAs and AI design tools. We also explored a scenario featuring the use of Alexa Sensei, a hypothetical voice-controlled AI-based design assistant mixing Alexa and Adobe Sensei characteristics. The findings indicate respondents have had limited opportunities to work with AI, but they expect intelligent systems to improve the efficiency of the design process. Further, majority of the respondents predicted that they would be able to collaborate creatively with AI design systems. Although designers anticipated challenges in natural language interaction, those who already adopted IVAs were less resistant to the idea of working with Alexa Sensei as an AI design assistant.

• Transactions on Control, Automation and Systems Engineering
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• v.4 no.1
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• pp.56-61
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• 2002

In this paper we describe an approach to coordinating the motion of a human with a mobile robot moving in a populated, continuously changing. natural environment. Our test application is a wheelchair accompanying a person through the concourse of a railway station moving side by side with the person. Our approach is based on a method for motion planning amongst moving obstacles known as Velocity Obstacle approach. We extend this method by a method for tracking a virtual target which allows us to vary the robot's heading and velocity with the locomotion of the accompanied person and the state of the surrounding environment.

• Asian review of World Histories
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• v.4 no.1
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• pp.125-132
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• 2016

This paper, as a conlcusion to this special issue, presents the future work that is being carried out at NTU Singapore in collaboration with Microsoft Research and Microsoft Azure for Research. For our research team the real frontier research in world histories starts when we want to use computers to structure historical information, model historical narratives, simulate theoretical large scale hypotheses, and incent world historians to use virtual assistants and/or engage them in teamwork using social media and/or seduce them with immersive spaces to provide new learning and sharing environments, in which new things can emerge and happen: "You do not know which will be the next idea. Just repeating the same things is not enough" (Carlo Rubbia, 1984 Nobel Price in Physics, at Nanyang Technological University on January 19, 2016).

• Proceedings of the Korean Information Science Society Conference
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• 2000.10c
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• pp.310-312
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• 2000

모바일 데이터 사용자의 수는 향후 5년 안에 전체 모바일 가입자의 70%에 육박하여 전 세계적으로 6억명을 초과할 것으로 예상되고 있으며 2005년에는 데스크탑 인터넷 이용자의 수를 초과하는 10억명에 이를 것으로 전망된다[3]. 그러나 현재의 휴대폰 기반 인터넷 서비스는 지난 80년대 문자 기반 PC통신 서비스를 이용하는 수준 정도이다. 또한 인터넷으로 연결되었다고 하더라도, 현재의 무선 인터넷 서비스는 때와 장소를 구분하지 않고 사용하기에는 서비스 제공 능력이나 모바일 업무에 맞는 어플리케이션 개발이 상당히 부족한 상황이다. 이러한 측면에서 모바일오피스(Mobile Office)는 누구나(AnyPerson), 언제나(AnyTime), 어디서나(AnyWhere) 회사 정보에 접근하고 공유하며 업무에 적용할 수 있도록 시급히 구현되어야 할 대상이다. 본 논문에서는 외근 위주의 영업사원과 사내 직원간에 보다 효과적인 커뮤니케이션이 필요한 보험업을 중심으로 특화한 모바일 오피스 솔루션의 기반을 제시하고, 이것을 모바일 환경과 일반 PC 환경 그리고 PDA(Personal Digital Assistants) 환경에 맞추어 각각 구현하였다.

• Proceedings of the Korean Information Science Society Conference
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• 2002.10c
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• pp.436-438
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• 2002

본 논문에서는 PDA(Personal Digital Assistants)을 이용하여 보안성 있는 흠 네트워크 가전 단말기 제어 시스템을 개발한다. PDA와 같은 이동 단말기가 발달함에 따라 외부 네트워크에서 흠 네트워크에 접속하여 가전 장비들을 제어하는 연구가 매우 중요하다. 그러나 방화벽만으로 홈 네트워크의 장비를 안전하게 제어하기에는 많은 문제점을 지니고 있다. 본 논문에서는 외부네트워크에서 흠 네트워크로의 안전한 접근 및 제어를 위한 가상 사설망(Virtual Private Network)을 흠 네트워크 제어 시스템에 적용하는 방법을 제시한다. 또한 다양한 흠 네트워크 단말기에 적용 할 수 있고 홈 네트워크간의 호환성을 높이기 위해서 OSGi(Open Service Gateway Initiative)프레임워크를 사용한다.

• The Journal of the Korea Contents Association
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• v.17 no.10
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• pp.179-189
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• 2017

The purpose of this paper is to develop a comprehensive research model that can explain potential customers' intentions to adopt and use VPA(Virtual Personal Assistants) devices. This study proposes and validates a new theoretical model that extends the perceived value theory. Partial least squares analysis is employed to test the research model and corresponding hypotheses on data collected from 313 survey samples. Perceived value, perceived usefulness, perceived enjoyment are important factors affecting the adoption of VPA devices. To increase potential users' intention to use, VPA device manufacturers should not only focus on developing utilitarian functions but also fun features based on open development echo-system. This study is the important empirical attempt to examine user acceptance of VPA devices, as most of the prior literature has concerned analysis of usage patterns or technical features.

• Journal of Technology Innovation
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• v.27 no.4
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• pp.111-144
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• 2019

As virtual assistants rapidly diffused into the market, the voice shopping market is expected to expand. The purpose of this study is to identify the factors that determine the consumers' intention to adopt voice shopping by using the unified theory of acceptance and use of technology(UTAUT). In this study, we set variables that influence the intention to adoption of voice shopping with performance expectation and effort expectations as the variables of UTAUT and playfulness expectations as an extended variable. In addition, we also include four voice secretary attributes such as response accuracy, compatibility, social presence, and safety in our research model to investigate the source of motivation of voice shopping adoption. The result of this analysis shows that variables such as performance expectation, effort expectation, and amusement expectation have a positive effect on the intention to adoption of voice shopping. With respect to the four voice shopping attributes, compatibility had a positive effect on performance expectancy, effort expectancy, and playfulness expectancy. Social presence has a positive effect on playfulness expectancy. Safety has a positive effect on effort expectancy and playfulness expectancy. On the other hand, response accuracy is not significant for performance expectancy, effort expectancy, and playfulness expectancy. This study reveals the determinants of intention to adopt the new purchasing method called voice shopping, and suggests the important factors for the innovation of commerce business.