• 한국IT서비스학회지
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• 제7권3호
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• pp.1-30
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• 2008

This paper proposes an integrated model of customer loyalty in the context of Internet shopping based on a review of two competing perspectives - transactional and relational views. The research model suggests that the usability and trust associated with an Internet shopping site are key determinants of customer loyalty. In this paper, factors such as promotion, ease of use/navigation, and purchase facilitation are posited as major determinants of usability. Trust, on the other hand, is assumed to be influenced by the quality of communication, social shopping service, and safety level associated with an Internet shopping site. This paper also asserts that the lack of consideration for individual differences is one of the key reasons for the inconsistent and mixed research findings in user acceptance literature. In this regard, the elaboration likelihood model (ELM) is considered to be appropriate referent theory as it may theoretically explain why a particular information technology (IT) related message has varying influences on different adopters. The research model comprising 11 hypotheses was derived from and validated through a survey involving 271 university students. The partial least square(PLS) method was used to test the suitability of the research model and its hypotheses. Overall, the results suggest that the usability and trust associated with an Internet shopping site play an important role in acquiring loyal customers. In particular, the user's Internet shopping involvement is found to moderate the relationship between trust and customer loyalty.

• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2018년도 추계학술대회
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• pp.288-289
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• 2018

IoT(Internet of Things)는 빠르게 증가하고 있으며 모바일 장치 및 웹과의 상호 연결을 통해서 일상생활에서 삶의 질을 향상시킬 수 있다. 본 논문은 가전제품에 IoT 기술을 접목하여 센서와 연결된 모바일 장치를 이용한 보다 나은 서비스를 제공하기 위해 모바일 감지를 통한 원격 제어를 향상시키기 위한 임베디드 시스템을 제안한다. 일반 가전제품들이 센서와 연결된 임베디드 시스템의 사용으로 우리의 노동력을 줄일 수 있다. 모바일 앱은 가전제품의 제어를 위한 메뉴 상태를 모니터링하고 원격 제어를 수행하여 사용자의 지식, 경험 및 인식을 향상시켜 보다 나은 삶을 누리게 하는데 기여할 수 있다.

• Perspectives in Nursing Science
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• 제5권1호
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• pp.17-31
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• 2008

Purpose: The purpose of this study was to evaluate the usability of a prototype personal digital assistant (PDA)-based decision support system for the management of obesity through usability testing with end-users (Advanced Practice Nurses [APNs]) prior to its implementation in clinical settings. Methods: This descriptive study used observational and think aloud techniques to address the research question: what usability problems are perceived by end-users? Five APNs were provided with the scenarios and the list of tasks to evaluate the application. Their verbalizations were recorded through Morae usabil ity software. Data analysis was based on the data captured through Morae, transcriptions, notes, and the end-user survey. Results: End-users completed all the required tasks without encountering a severe usability problem, and agreed that the system was easy to use. clear, concise, and useful. Usability issues that were unrecognized by the developer or usability experts were identified by APNs. The usability problems were categorized according to positive characteristics, negative characteristics, and recommendations. The usability issues were discussed with the project team members, and solutions were suggested to improve the user interface of the PDA-based decision support system before the final implementation. Conclusions: This approach had an important impact on making the system easier to use and more useful from the perspective of design and content. The results of this evaluation provided iterative feedback regarding the design and implementation of the PDA-based decision support system for the management of obesity.

• 간호행정학회지
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• 제15권2호
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• pp.244-254
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• 2009

Purpose: This research was conducted to explore the experience of using Internet to solve health problems and to develope a grounded theory. Method: There were 15 subjects in their 30s who had experience using Internet to solve health problems for themselves and their families. Results: 114 concepts, 31 subcategories, and 9 categories were derived from the analysis by using approaches by Strauss & Corbin. Central phenomenon was "Primary healthcare information" and the core category was "Selecting ways to solve health problems". The participants' experiences were conceptualized into two perspectives: reliability of the information and tendency of preference among the sites. Conclusion: All of the processes found on Internet that solved health problems required the assistance of a health professional such as a nurse. It was judged that there are some differences in the degree of usage regarding health-related information, which was primarily in accordance with the confidence and attitude of the user with respect to Internet information. We presented a strategy that could operate with professionals and nonprofessionals. Therefore, we can be satisfied by the fact that this study suggests a complimentary nursing strategy to the healthcare on Internet.

• 인터넷정보학회논문지
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• 제23권2호
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• pp.1-7
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• 2022

Machine learning (ML) algorithms have been intended to seamlessly collaborate for enabling intelligent networking in terms of massive service differentiation, prediction, and provides high-accuracy recommendation systems. Mobile edge computing (MEC) servers are located close to the edge networks to overcome the responsibility for massive requests from user devices and perform local service offloading. Moreover, there are required lightweight methods for handling real-time Internet of Things (IoT) communication perspectives, especially for ultra-reliable low-latency communication (URLLC) and optimal resource utilization. To overcome the abovementioned issues, this paper proposed an intelligent scheme for traffic steering based on the integration of MEC and lightweight ML, namely support vector machine (SVM) for effectively routing for lightweight and resource constraint networks. The scheme provides dynamic resource handling for the real-time IoT user systems based on the awareness of obvious network statues. The system evaluations were conducted by utillizing computer software simulations, and the proposed approach is remarkably outperformed the conventional schemes in terms of significant QoS metrics, including communication latency, reliability, and communication throughput.

• 정보관리학회지
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• 제40권4호
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• pp.279-306
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• 2023

본 연구는 다양한 관점의 이용요구가 혼재되어있는 독서자료의 속성을 파악하기 위해, 도서의 동시이용 (동시대출, 동시구매) 데이터에 기반하여 독서자료의 선택 및 이용과 관계된 서지적 속성을 분석하였다. KDC 주제, 독자대상, 이용자 연령 관련 26개 하위 속성 단위로 구분하여 서지적 속성 용어의 동시출현행렬을 생성하고 네트워크 분석을 수행한 결과, 독서자료의 서지적 속성의 세부 내용 및 두드러진 매개 역할을 파악하였다. 본 연구의 결과는 향후 도서관 OPAC을 비롯한 독서정보 시스템의 패싯 설계에 도움이 될 것이다.

• 한국산학기술학회논문지
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• 제21권5호
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• pp.28-38
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• 2020

반도체 증착장비는 일반적인 대량생산 제품과는 차별화되는 특징을 보이는 복합제품시스템(CoPS)의 주요 예시 중 하나로, 사용자 요구에 대한 충실한 이해가 필수적이다. 이에 본 연구에서는 Kano 모델을 활용하여 증착장비의 품질속성에 대한 사용자와 생산자의 만족 특성을 비교분석하고자 하였다. 사용자 및 생산자 기업의 엔지니어와 관리자들을 대상으로 Kano 설문을 수행하고 분석한 결과, 사용자 측과 생산자 측의 품질 만족 특성이 다르게 나타났다. 총 22개의 소분류 품질속성 가운데, 제조사 측은 22개 모두에 대해 매력적(A) 품질속성으로 평가한 반면, 사용자 측에서는 A 6개, 무관심(I) 10개, 당연적(M) 2개, 기타 경계치값 2개 등으로 평가하여 큰 차이를 보였다. 특히 제조사 측에서는 생산성능, 신뢰성, 편의성, 가격 및 원가 모두에 대해 매력적(A) 품질속성으로 평가한 반면, 사용자 측에서는 신뢰성에 대해서만 매력적 또는 당연적(M)으로 평가하고 나머지는 무관심(I)으로 평가하는 경우가 많았다. 이러한 결과는 이 분야 사용자와 생산자 간 품질속성에 대한 인식이 다르게 나타나고 있으며, 이에 대한 개선 및 전략적 활용의 필요성이 있음을 시사한다. 또한 상기의 결과는 CoPS는 규모의 경제와 비용절감보다는 제품 자체의 성능이 중요함을 시사한다. 따라서 증착장비 제조사들은 복합제품시스템의 특징을 반영한 혁신전략을 마련할 필요가 있다.

• Asia pacific journal of information systems
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• 제17권3호
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• pp.25-53
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• 2007

The Expectation Confirmation Model (ECM) of information systems investigates the continued information systems usage behavior. This paper expands the original post-adoption beliefs and searches the applications in the emerging hedonic information systems. Previous IS researches focused on the organizational environments. However as the information technology (especially internet) evolves, information systems have not only emerged for the organizations but also for the individual users, such as internet portals, internet communities, on-line games etc. These information systems so called Hedonic Information Systems aims to provide self-fulfilling value rather than instrumental value to the users. Researches in other disciplines, including marketing and consumer behavior research, illustrate that the hedonic and utilitarian perspective of goods and services have different influence on the consumer behavior. Goods and services used to be classified into either hedonic or utilitarian aspect but now they may belong to both aspects simultaneously. Moreover consumer's goals or tasks have both hedonic utilitarian aspects. When a consumer makes a decision to purchase or repurchase goods or services, he/she compares the hedonic and utilitarian perspectives of goods to find most suitable ones to satisfy their goals/tasks. Finally, consumer's behavior is determined by the trade-off between what the goods can provide to the consumers and in what extent the goods fulfill consumer's purchase behavior. Consumer also shows that the salience of hedonic perspective is relatively greater when consumer decides which of several items to give up (forfeiture choices) than the time when they decide which item to acquire (acquisition choices). Some researches in MIS discipline have found out that the information systems also have both hedonic and utilitarian perspectives. The decision process of whether to use information systems or not is similar to that of a consumer's decision of purchasing or repurchasing goods or services. However most of researches in MIS tend to focus on the extrinsic motivation variables which only cover the utilitarian perspective of information systems. It is only recent that researches start to investigate the intrinsic motivation variable - Perceived Enjoyment - for the hedonic perspective. Considering the consumer's purchasing decision process, users of information systems evaluate the systems through balancing between intrinsic (hedonic) and extrinsic (utilitarian) variables according to their main tasks or tendencies. This paper proposes a model that is based on the ECM of IS Continuance model modified from Expectation Confirmation Model to fit into the continued usage of information system. It first started from the decision process regarding hedonic and utilitarian perspectives in the consumer behavior literatures. The model deals with continued usage of information systems beyond the mere technology adoption as in most of the previous MIS researches. This research is particularly important to the hedonic information systems, because their business model depends on the frequent usages rather simple adoption at the beginning. Because the basic model only considered the extrinsic motivations (perceived usefulness) to explain the users' behavior and as the information systems can have both hedonic and utilitarian dimensions, it should consider both perspectives. Therefore, this newly proposed model considers intrinsic variable (perceived enjoyment) as well. Since the individual user can have a preference on either aspects that is between the hedonic and utilitarian perspective depending on his/her main tasks or goals, some variables (Hedonic Orientation and Utilitarian Orientation) meaning the extents of users' pursuing from the information system were additionally studied.

• 한국융합학회논문지
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• 제10권3호
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• pp.167-176
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• 2019

4차 산업의 선두에 있는 대화형 에이전트는 앞으로 사용자 중심의 개인화를 목표로 하며, 다양한 IoT와 연결할 수 있는 허브 역할을 가질 수 있는 중요한 위치를 차지하고 있다. 개인화에 있어서 사용자의 감정을 인지하고 올바른 상호작용을 제공하는 것은 대화형 에이전트가 풀어야 할 숙제이다. 이 연구에서는 먼저 감정의 정의와 과학적 공학적 접근에 대해서 알아보았다. 또한, 감정이 가진 사회적인 기능이 무엇이며 어떤 요소가 있는지 사회적 관점을 통해서 알아보고 이를 이용하여 감정을 어떻게 이해할 수 있는지 밝혔다. 이를 바탕으로 사용자가 커뮤니케이션에서 감정의 사회적 요소들을 어떻게 발견할 수 있는지 알아보았다. 연구결과 사용자 발화에서 사회적 요소를 발견할 수 있으며, 이를 감정이 가지는 사회적 의미와 연결할 수 있다. 최종적으로 사용자 커뮤니케이션에서 사회적 요소들을 발견할 수 있는 모델을 제안한다. 이를 바탕으로 대화형 에이전트를 디자인하는 데 있어서, 사용자 중심의 설계와 상호작용 연구에 도움이 되길 바란다.

• 한국비블리아학회지
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• 제25권1호
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• pp.5-18
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• 2014

기존의 여러 연구들에서 디지털 도서관 평가를 위한 기준들이 제시되어 왔으나, 대부분의 연구에서 평가기준에 대한 이용자 관점을 이해하려는 노력이 부족하였다. 본 연구는 디지털 도서관 평가 기준들에 대한 이용자들의 의견을 미국 내 5개 대학교에서 10명의 교수 이용자와 20명의 학생 이용자에게 설문을 통해 직접 조사하였다. 설문 참여자들은 본 연구진에 의해 제시된 8개 영역 (장서, 정보조직, 맥락 등) 내 평가 기준들의 중요성에 대해 7점 척도로 응답하였다. 설문의 결과는 이용자들이 장서의 이용과 품질, 서비스와 관련된 항목들을 도서관 운영항목에 비해 상대적으로 더 중요하게 생각하고 있었음을 보여주었다. 본 연구의 결과는 이용자 중심의 디지털 도서관 개발과 관련하여 이용자의 요구와 선호를 반영하는 도서관 평가체계 구축에 도움이 될 것이다.