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User's Intention (user + intention)

Distribution by Scientific Domains

Information Science and Computing	50%

Selected Abstracts

Resistance to change and the adoption of digital libraries: An integrative model

JOURNAL OF THE AMERICAN SOCIETY FOR INFORMATION SCIENCE AND TECHNOLOGY, Issue 8 2009
Oded Nov
In this paper we extend earlier work on the role of the personality trait of resistance to change (RTC) in the adoption of digital libraries. We present an integrative study, drawing on a number of research streams, including IT adoption, social psychology, and digital-library acceptance. Using structural equation modeling, we confirm RTC as a direct antecedent of effort expectancy. In addition, we also find that by affecting computer anxiety and result demonstrability, RTC acts as an indirect antecedent to both effort expectancy and performance expectancy, which in turn determine user intention to adopt digital library technology. Implications for research and practice are discussed. [source]

Stylized lighting for cartoon shader

COMPUTER ANIMATION AND VIRTUAL WORLDS (PREV: JNL OF VISUALISATION & COMPUTER ANIMATION), Issue 2-3 2009
Hideki Todo
Abstract In the context of non-photorealistic imaging, such as digital cel animation, lighting is symbolic and stylized to depict the scene's mood and the geometric or physical features of the objects in the scene. Stylized light and shade should therefore be intentionally animated rather than rigorously simulated. However, it is difficult to achieve smooth animation of light and shade that are stylized with a user's intention, because such stylization cannot be achieved using just conventional 3D lighting. To address this problem, we propose a 3D stylized lighting method, focusing on several stylized effects including straight lighting, edge lighting, and detail lighting which are important features in hand-drawn cartoon animation. Our method is an extension of the conventional cartoon shader and introduces a light coordinate system for light shape control with smooth animations of light and shade. We also extend a toon mapping process for detailed feature lighting. Having these algorithms in a real-time cartoon shader, our prototype system allows the interactive creation of stylized lighting animations. We show several animation results obtained by our method to illustrate usefulness and effectiveness of our method. Copyright © 2009 John Wiley & Sons, Ltd. [source]

Design and control of a planar haptic device with passive actuators based on passive force manipulability ellipsoid (FME) analysis

JOURNAL OF FIELD ROBOTICS (FORMERLY JOURNAL OF ROBOTIC SYSTEMS), Issue 9 2005
Changhyun Cho
In this paper, we propose an optimal design for a passive haptic device with brakes and its control method. The inability of a brake to generate torque significantly affects the performance of a multi-DOF haptic device, in that a desired force can be generated only approximately in some workspace and, in some cases, the device may become stuck contrary to the user's intention. In this research, these limitations are analyzed by means of the so-called passive force manipulability ellipsoid. Through the analysis, performance indices are developed for evaluating the limitations associated with passive haptic devices. Optimization is conducted for a 5-bar mechanism with redundant actuation, and a coercive force approximation scheme is developed to avoid unsmooth motion during the wall-following task along the virtual wall. It is experimentally shown that the performance in relation to the limitations is greatly improved for the optimized mechanism. © 2005 Wiley Periodicals, Inc. [source]

Gender differences in the perception and acceptance of online games

BRITISH JOURNAL OF EDUCATIONAL TECHNOLOGY, Issue 5 2008
Hsiu-Yuan Wang
With the proliferation of online games, understanding users' intention to play online games has become a new issue for academics and practitioners. Prior studies have investigated the factors affecting behavioural intention to play online games. However, little research has been conducted to investigate the gender differences in the acceptance of online games. Thus, this study is to investigate the effects of perceived playfulness and its potential antecedents (ie, computer self-efficacy, computer anxiety, challenge, speed and feedback) on the behavioural intention to play online games, and to examine the gender differences in the perception and acceptance of online games. Data collected from 281 respondents in Taiwan were tested against the research model using analysis of variance and structural equation modelling approaches. The theoretical and practical implications of the results were discussed. [source]