• Proceedings of the Korea Association of Information Systems Conference
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• 2005.05a
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• pp.266-272
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• 2005

비즈니스 전략 및 환경이 정적인 환경에서 동적인 환경으로 변화의 필요성이 요구되는 유비쿼터스 환경에 제공되는 서비스가 언제, 어디서나, 쉽게 접근하기 위한 이동성을제공하기 위한 기술로 모바일 서비스의 중요성이 대두되고 있다. 현재 웹 서비스에서 사용하고 있는 요청-응답방식의 모바일 환경에서 일관성을 유지하기 힘들다. 서비스 지향 아키텍처를 기반으로 이동성을 고려한 아키텍처를 정의할 필요가 있다. 따라서 에이전트 컴퓨팅아키택처에 의해 상호운영성이 높은 모바일 에이전트 컴퓨팅을 통하여 모바일 환경에서 사용자의 접근을 용이하게 하고 컴포넌트를 이용한 개발의 효율성을 향상시킬 수 있어야 한다. 본 논문에서는 PDA 서비스를 위해 모바일 에이전트를 이용하여 이를 위한 컴퓨팅 환경을 제공하기 위해서 모바일 에이전트 아키텍처를 정의하고 각 레이어에서 식별된 컴포넌트를 개발하기 위한 프로세스를 제시하고자 한다.

• Proceedings of the Korean Society for Emotion and Sensibility Conference
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• 2002.05a
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• pp.323-326
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• 2002

본 연구는 새로 개발된 에어쿠션의자의 인체 적합성 검증에 관한 실험으로 기존 에어쿠션의자와 스펀지 매트의자를 새로 개발된 의자와 비교 평가 하였다. 본 연구를 위해 설문지를 통한 사용자의 감성 및 사용성을 측정하였고 객관적 검증에 필요한 체압분포측정을 하였다. 실험의 결과 사용성 평가에서 대부분의 피험자들이 신형 의자가 보다 편안하고 안락하다고 응답하였으며, 각 의자를 비교하는 전체 14항목의 설문 중 11개 항목이 의자A에서 중요도 순위가 좋게 나타났다. 체압분포에서도 좌판의 경우 신형 에어쿠션의자의 체압의 평균값이 적게 나오면서 고르게 분포하였고, 좌골결절을 중심으로 좌, 우 대칭이 되게 나왔다. 또한 등판부위에서도 등판의 수직선을 중심으로 체압분포가 좌, 우 대칭이 되게 나왔다.

• Proceedings of the Korean Information Science Society Conference
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• 1999.10a
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• pp.457-459
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• 1999

자율적 객체(autonomous object)는 분산 시스템에서의 기능(functionality)에 대한 융통성과 동적 확장성을 제공하기 위해 적합한 패러다임이다. 코드 이동성에 근거한 기능의 동적 합성이 자율적 객체에 의하여 지원되면 사용자의 다양한 서비스 요구 충족과 네트워크 부하 및 서비스 응답 시간 최적화 등과 같은 잇점을 얻을 수 있다. 본 논문에서는 이러한 잇점을 제공하는 코드 이동성에 기반한 동적 기능 합성에 대한 연구로서 기존의 연구들에서 제안하는 동적 기능 합성을 확장하고, 확장된 합성 메커니즘을 실현하기 위한 언어적 구조체(language constructs)를 설계하였다. 또한, 자율적 객체가 수행되는 환경으로서의 플랫폼을 제안하고 적용 사례를 통하여 코드 이동성에 근거한 기능 합성의 예를 제시하였다.

• Information Systems Review
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• v.19 no.4
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• pp.63-85
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• 2017

Recent information technology achieves remarkable progress in almost all areas where it can be applied. However, this technology also causes technostress, such as fear and pressure to individuals, due to events, such as the threat of job loss. This technostress is becoming an important factor that can affect user performance and productivity in future society where information technology will be the focus. This kind of stress should be studied considerably in academic and practical applications. The effects of technostress on individual performance remain ambiguous. Therefore, academic research is needed to prove these effects. This study aimed to clarify the direct and indirect effects of technostress on information technology end-users. We developed a research model that integrates innovation resistance and technostress theory through previous studies and analyzed the questionnaire of 317 people. The PLS structural equation model and the study results of Baron and Kenny (1986) indicated that rapid change, connectivity, reliability, and complexity are crucial factors affecting the technostress of information technology. Technostress was analyzed indirectly only through innovation resistance, which affected the performance of end-users. This study will provide new implications for the relationship between technostress and performance or productivity in the IS field.

• The Journal of the Korea institute of electronic communication sciences
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• v.19 no.1
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• pp.173-180
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• 2024

Along with its importance, the real estate market poses risks of various fraudulent activities. Recently, a surge in real estate-related scams, such as lease fraud, has caused great financial damage to many ordinary people. These problems are often caused by the complexity of real estate transactions and information imbalance. Therefore, there is an urgent need to secure reliability and improve transparency in the transaction process. In this paper, to solve this real estate fraud problem, we propose a chatbot system using digital technology and artificial intelligence, especially GPT (Generative Pre-Trained Transformer). This system serves to protect users from fraud by providing them with precautions and confirmations in the lease transaction process. In addition, GPT-based chatbots respond to questions from users in time, contributing to reducing uncertainty in the transaction process and increasing reliability.

• Journal of Digital Convergence
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• v.15 no.6
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• pp.353-359
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• 2017

Diverse public institutions from Republic of Korea currently hold various policies regarding public design with close attentions. Thus, the primary goal of this study relies on analyzing relation between public design and user experience. In accordance with comprehensive understanding from literature researches, and the evaluation criteria of public design could be identified through diverse pilot researches and existing relative researches. Analysis regarding Shedroff's experiential elements and user-experience factors had been conducted based on an instance mentioned by Korea Association of Public Design. The field test was conducted among experienced users (100 individuals) through survey. The research could detect significant correlation between public design(accessibility, regionalism) and user experience(pleasurable, meaningful). The overall user satisfaction level has been remarked as 2.64 out of 5.0 despite vigorous policies. Even though the importance of esthetic aspects should not be disregarded, the priority of study should rely on identifying 'who' are the actual users and 'the way' they understand.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.15 no.5
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• pp.2769-2777
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• 2014

This research herein aims to assist maximizing performance of introduced systems by managing the acceptance factor of uTradeHub that is easily overlooked in the system installation process by trading companies aiming to install uTradeHub system in future by conducting the two following things: i) grasping factors affecting system usefulness and user satisfaction derived from uTradeHub acceptance factor, and ii) analyzing the effect relationship of system usefulness on user satisfaction at an inspection level of system usefulness and user satisfaction, since the uTradeHub system introduced for mid- and small-sized trading companies in export and import works in mid-2008. Proof analysis was conducted by using SPSS 19.0 statistic package on data of 112 effective responses collected through questionnaire surveys, whose results are as follows. First, the uTradeHub acceptance factors having a significant effect on system usefulness are relative advantage, easy of use, task adaptedness, support of CEO, maturity of IT infrastructures, and degree of education/training. Second, the uTradeHub acceptance factors having an effect on user satisfaction are relative advantages, task adaptedness, support of CEO, maturity of IT infrastructures, and degree of education/training. Third, system usefulness showed a significant effect on user satisfaction.

• Science of Emotion and Sensibility
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• v.22 no.3
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• pp.65-76
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• 2019

Augmented reality (AR) is the technology in which a virtual image made by computer is integrated with the real world. Food is one of the most popular products purchased online. In this study, we investigated how the presentation of food images with AR affects purchase intention and user engagement. We hypothesized that purchase intention was increased more by AR food images than by static food images. We also examined whether user engagement mediates the relationship between image presentation format and purchase intention. To test this hypothesis, participants in one group saw AR food images, and participants in another group saw static food images on an iPad. All participants then answered questions about user engagement and purchase intention. As predicted, participants who saw an AR food image reported higher user engagement and higher purchase intention than did those who saw a static food image. The indirect effect of user engagement was also significant, and the link between image presentation format and purchase intention was fully mediated by user engagement. We also found that aesthetic appeal, one of the sub-factors of user engagement, fully mediated the link between image presentation format and purchase intention. Thus AR images of food images were aesthetically more appealing, which led to higher purchase intention. These findings suggest that AR technology can be used effectively as a way to advertise food.

• Journal of Digital Convergence
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• v.11 no.2
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• pp.279-285
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• 2013

The development of information networks and computer technology has become a foundation to open up a sea of information and knowledge. The recent popularization of smart devices has been used as a tool to easily obtain the desired information and knowledge. In this paper, a knowledge-sharing system using information and social networks based on smart devices is proposed. The proposed system consists of functions of an Internet information search for user queries, accumulated knowledge, and social network response from acquaintances. An evaluation for user satisfaction was conducted to analyze the efficacy of the proposed system. According to the experiment, the knowledge-sharing system using smart device information results in significant satisfaction compared to the general information search engines.

• Journal of Korea Multimedia Society
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• v.15 no.9
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• pp.1126-1132
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• 2012

To enhance network efficiency, CCN allow intermediate network nodes between a content consumer and a content publisher to temporarily cache transmitted contents. Then the network nodes immediately return back the cached contents to another consumers when the nodes receives relevant contents request messages from the consumers. For that, CCN utilizes hierarchical content names to forward a request message as well as a response message. However, such content names semantically contain much information about domain/user as well as content itself. So it is possible to invade users' privacy. In this paper, we first review both the problem of CCN name in the view point of privacy and proposed schemes. Then we propose an improved name management scheme for users' privacy preservation.