• Asia pacific journal of information systems
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• 제31권2호
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• pp.236-256
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• 2021

Online financial technology products are an important consumer finance innovation. While a large body of previous research has focused on initial adoption and consumer willingness to use these products, little research explores the continued use of these products beyond the initial adoption phase. In particular, special attention should be paid to how users' trust and perceptions of privacy and security affect continued use behavior. This paper integrates the expectation confirmation model of information system continuance (ECM-ISC), the information system success model (ISSM) and the security and trust literatures to investigate continued use of online financial technology. To test the research model, we collected 398 valid questionnaires from Ant Credit Pay users. The research results show that system and service quality positively impact users' expectation confirmation, while information quality has no significant impact. Expectation confirmation and perceived usefulness positively affect user satisfaction. Moreover, the user's perception of privacy and security plays a vital role in user satisfaction. Satisfaction and perceived trust jointly promote users' continuance behaviors. Findings of this study indicates the importance of the information system success factors and security factors due to their influence on the continued use of Fintech products. This conclusion has implications for enterprises in improving the product qualities and enhancing the degree of security to meet user needs.

• 반도체디스플레이기술학회지
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• 제7권4호
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• pp.13-18
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• 2008

This paper explores a content-based image retrieval framework with relevance feedback based on genetic algorithm (GA). This framework adopts GA to learn the user preferences using the similarity functions defined for all available descriptors. The objective of the GA-based learning methods is to learn the user preferences using the similarity functions and to find a descriptor combination function that best represents the user perception. Experiments were performed to validate the proposed frameworks. The experiments employed the natural image databases and color and texture descriptors to represent the content of database images. The proposed frameworks were compared with the other two relevance feedback methods regarding effectiveness in image retrieval tasks. Experiment results demonstrate the superiority of the proposed method.

• Computers and Concrete
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• 제16권2호
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• pp.287-309
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• 2015

FormWorks-Plus is a generalized public domain user-friendly preprocessor developed to facilitate the process of creating finite element models for structural analysis programs. The lack of a graphical user interface in most academic analysis programs forces users to input the structural model information into the standard text files, which is a time-consuming and error-prone process. FormWorks-Plus enables engineers to conveniently set up the finite element model in a graphical environment, eliminating the problems associated with conventional input text files and improving the user's perception of the application. In this paper, a brief overview of the FormWorks-Plus structure is presented, followed by a detailed explanation of the main features of the program. In addition, demonstration is made of the application of FormWorks-Plus in combination with VecTor programs, advanced nonlinear analysis tools for reinforced concrete structures. Finally, aspects relating to the modelling and analysis of three case studies are discussed: a reinforced concrete beam-column joint, a steel-concrete composite shear wall, and a SFRC shear panel. The unique mixed-type frame-membrane modelling procedure implemented in FormWorks-Plus can address the limitations associated with most frame type analyses.

• Tribology and Lubricants
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• 제32권6호
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• pp.207-211
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• 2016

To interpret the perception that originates from tactile sensibility during people touch and recognize the object surfaces, this study focuses on the development of a friction model that can describe the interaction of a stylus pen sliding over the counter surfaces. In addition, the study includes several other experimental factors such as the pressure, temperature, and topology of surface, which can have an effect on the emotional user experience concerning various surfaces; this research aims to suggest a method to quantitatively evaluate the relation between these experimental parameters and emotional user experience. Accordingly, the objective of research comprises the friction characteristic technology for measurement of fine tribological behavior and a standard to quantify the emotional feedback. Existing panels or input devices that provide interaction feedback about user actions simply operate with a single frequency vibration or sound response. On the contrary, this research investigates various interaction characteristics including friction force, frequency, and surface topology synthetically. Using the developed model, which can explain the relation between the friction parameters and emotional user experience, developers can design their product in order to provide the user with expected emotional sensibility. Consequently, it can contribute to reduce the development cost about sensitivity model.

• 유통과학연구
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• 제19권9호
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• pp.5-17
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• 2021

Purpose: As mobile devices are commonly used and contact-free services are widespread due to the COVID-19 pandemic in the recent distribution environment, this study suggests retail strategies for consumers using high-speed railways. To this end, we analyzed how consumer perception on technologies necessary for use of mobile apps is related to the attitude that drives consumers to continue using the app services. Research design, data and methodology: Based on the extended unified theory of technology acceptance and use of technology model by Venkatesh, Morris, Davis and Davis (2003), we added variables proposed by existing theories that studied the technology acceptance model from multiple perspectives and empirically analyzed the relationship between user satisfaction and use intention with structural equation modeling. Results: As expected, factors necessary for the use of app services such as performance expectancy, social influence, price value, facilitating conditions, security, and aesthetics had positive effects on user satisfaction, whereas the effect of effort expectancy on user satisfaction was rejected. And user satisfaction was found to have a significant effect on intention to use. Conclusions: The results provide implications that strategic retail management of the above factors can motivate passengers to continuously use high-speed railways.

• 정보관리학회지
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• 제30권4호
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• pp.93-110
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• 2013

정보에 대한 접근을 증가시키는 기술의 사용은 지난 십 년 동안 대학도서관 서비스에 많은 변화를 가져왔다. 정보공유공간의 등장은 이러한 변화 중 하나이다. 이에 대한 대부분의 이전 연구는 이의 개념이나 역할에 치중하였다. 반면, 정보공유공간을 공간서비스로 파악하고 있는 본 연구의 목적은 정보공유공간이 이용자 유동패턴과 도서관인식에 어떤 영향을 미치는지 파악하는데 있다. 정보공유공간이 도서관의 주요 공간과 시설로 자리매김하였고 이에 따라 이들이 이용자의 행위와 인식에 어떤 영향을 미치는지 알아볼 필요가 있다. 본 연구는 두 가지의 연구방법을 사용하였다. 첫째, 관찰법을 사용하여 이용자들의 유동 패턴 및 행위를 관찰하였고, 둘째, 정보공유공간에 대한 이용과 인식에 관한 인터뷰를 20명의 학부학생과 12명의 대학원생을 대상으로 수행하였다. 본 연구의 결과로서 학부학생과 대학원생은 서로 차별화 되는 유동패턴을 보였고, 시설의 위치와 구조는 이용자들의 움직임과 행위에 영향을 미쳤으며, 또한 정보공유공간에 대한 인식은 도서관 전반에 대한 인식으로 해석되는 경향을 보였다. 본 연구결과는 이용자 요구를 고려한 도서관 공간 설계 및 향상에 도움이 될 것이다.

• Journal of Korea Trade
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• 제26권3호
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• pp.1-22
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• 2022

Purpose - Social media platforms have presented individuals with an opportunity to create and maintain their social relationship through the use of social media services. However, such social relationship has a negative influence on users' interest in social media. Design/methodology - Using structural equation modeling, this study seeks to examines the effects of different social media conflicts (individual and social conflicts) on users' psychological internal state, especially user apathetic behavior Findings - The findings confirm that, among social media conflicts, social-related conflict, especially social interaction overload has a negative effect on cognitive resonance, while individual conflict has the highest effect on cognitive dissonance. Also, cognitive dissonance has a much greater effect than cognitive resonance on user resistance, this means that users' negative perception of social media has a greater influence on their resistance. Lastly, user's resistance was found to have a positive influence on user's apathetic behavior. Originality/value - In other to capture social media Apathetic behavior, this study focus on social media conflict perspective, which includes social-related conflict and individual conflict, which are found to influence users' internal states towards social media and further induce social media behavior. This study is unique because it is among the first to explore social media apathetic behavior by focusing on the influence of both external social media conflict and internal state. Also, this study proposed that social related conflict has a higher negative influence on WeChat user than individual related conflict.

• 정보관리학회지
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• 제33권1호
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• pp.111-137
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• 2016

오늘날 공공도서관은 정보제공뿐만 아니라 문화생활 기능 제공 등 그 역할이 변화하고 있으며, 도서관 공간 역시 도서관의 서비스를 반영해 변화하고 있다. 본 연구는 이러한 도서관 공간에 대한 탐색적 연구를 수행하고자 한다. 본 연구는 도서관 공간과 이용자의 도서관 인식 간 상관관계를 탐색하고, 도서관의 물리적 특성을 기반으로 도서관 공간 유형을 제안하는데 그 목적이 있다. 본 연구를 위해 관찰조사 및 설문조사를 수행했다. 관찰조사 결과, 도서관의 공간 유형은 '분리형', '부분통합형', '완전통합형' 세 가지로 나타났다. 본 연구에서 제안한 공간 유형의 타당성을 검증하기 위해 통계 분석을 수행한 결과, 공간 유형에 따라 이용자의 도서관 인식과 이용 목적에서 유의한 차이가 나타났다. 즉, 도서관의 공간 구성에 따라 도서관 공간을 유형화할 수 있으며, 공간 유형이 이용자의 인식에 영향을 미치는 것으로 판단된다. 본 연구는 이제까지 고려되지 않았던 도서관 공간과 도서관 인식 간의 관계를 탐색하고, 공공도서관에 대한 긍정적인 인식을 형성하는데 적합한 도서관 공간 구성을 제안했다는데 그 의의가 있다.

• Journal of Information Processing Systems
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• 제17권3호
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• pp.462-472
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• 2021

With an increase in the scale of recommender systems, users' rating data tend to be extremely sparse. Some methods have been utilized to alleviate this problem; nevertheless, it has not been satisfactorily solved yet. Therefore, we propose an effective pre-rating method based on users' dichotomous preferences and average ratings fusion. First, based on a user-item ratings matrix, a new user-item preference matrix was constructed to analyze and model user preferences. The items were then divided into two categories based on a parameterized dynamic threshold. The missing ratings for items that the user was not interested in were directly filled with the lowest user rating; otherwise, fusion ratings were utilized to fill the missing ratings. Further, an optimized parameter λ was introduced to adjust their weights. Finally, we verified our method on a standard dataset. The experimental results show that our method can effectively reduce the prediction error and improve the recommendation quality. As for its application, our method is effective, but not complicated.

• 한국콘텐츠학회논문지
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• 제11권6호
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• pp.106-115
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• 2011

본 논문에서는 기존에 제시된 쉐이딩 알고리즘들이 음영 표현을 통해 3차원 물체의 형태를 효과적으로 전달하는지 평가하고 검증한다. 8가지 스타일로 쉐이딩된 10개의 3차원 물체 중의 한 개의 이미지를 사람들에게 보여주고 물체 표면의 여러 곳의 위치에서 곡면의 법선 벡터와 일치하도록 측정기(gauge)의 방향을 조정하도록 요청하는 스터디를 수행한다. 이 실험에서 수집한 법선 벡터 추정치가 사람들 간에 서로 일치하는지 비교하고 또한 실제 3차원 곡면 모델의 법선 벡터와 일치하는지도 비교한다. 본 논문의 실험을 통하여 물체의 음영을 표현하는 방법에 따라서 사람들이 물체의 형태를 다르게 해석한다는 사실을 보인다. 또한, 기존의 쉐이딩 알고리즘들 중에서 음영 톤의 단계수가 많고 톤 단계가 전반적으로 균일하게 분포되어 있는 특성을 가지는 알고리즘이 물체의 형태를 보다 효과적으로 표현하는 것으로 나타났다. 본 논문에서 수집한 실험 데이터 및 분석 결과는 물체의 형태를 효과적으로 전달하는 것을 목적으로 하는 새로운 CG 쉐이딩 알고리즘을 설계하는데 활용 가능할 것으로 기대된다.