240,287 research outputs found
A Test of the Theory of DSS Design for User Calibration: The Effects of Expressiveness and Visibility on User Calibration
This paper reports a test of the theory of decision support systems design for user calibration that compares the efficiency of the visual computing paradigm with that of the conventional text paradigm over varied levels of problem novelty. Perfect user calibration exists when a user’s confidence in a decision equals the quality of the decision. The laboratory study reported here compared the effects on user calibration of problems depicted either using a text paradigm or visual computing paradigm. The results support the theory. When problems are new and novel, visual depiction improves user calibration. As problems became more familiar and problem novelty decreases, no difference was found in user calibration between subjects exposed to visibility diagrams and those exposed to a traditional text paradigm
Peripheral Notifications: Effects of Feature Combination and Task Interference
Visual notifications are integral to interactive computing systems. The design of visual notifications
entails two main considerations: first, visual notifications should be noticeable, as they usually
aim to attract a user`s attention to a location away from their main task; second, their noticeability
has to be moderated to prevent user distraction and annoyance. Although notifications have been
around for a long time on standard desktop environments, new computing environments such as
large screens add new factors that have to be taken into account when designing notifications. With
large displays, much of the content is in the user's visual periphery, where human capacity to notice
visual effects is diminished. One design strategy for enhancing noticeability is to combine visual
features, such as motion and colour. Yet little is known about how feature combinations affect
noticeability across the visual field, or about how peripheral noticeability changes when a user is
working on an attention-demanding task. We addressed these questions by conducting two studies.
We conducted a laboratory study that tested people's ability to detect popout targets that used
combinations of three visual variables. After determining that the noticeability of feature combinations
were approximately equal to the better of the individual features, we designed an experiment
to investigate peripheral noticeability and distraction when a user is focusing on a primary task.
Our results suggest that there can be interference between the demands of primary tasks and the
visual features in the notifications. Furthermore, primary task performance is adversely affected by
motion effects in the peripheral notifications. Our studies contribute to a better understanding of
how visual features operate when used as peripheral notifications. We provide new insights, both
in terms of combining features, and interactions with primary tasks
Learning Parallel Computations with ParaLab
In this paper, we present the ParaLab teachware system, which can be used for learning the parallel computation methods. ParaLab provides the tools for simulating the multiprocessor computational systems with various network topologies, for carrying out the computational experiments in the simulation mode, and for evaluating the efficiency of the parallel computation methods. The visual presentation of the parallel computations taking place in the computational experiments is the key feature of the system. ParaLab can be used for the laboratory training within various teaching courses in the field of parallel, distributed, and supercomputer computations
Microservices and Machine Learning Algorithms for Adaptive Green Buildings
In recent years, the use of services for Open Systems development has consolidated and strengthened. Advances in the Service Science and Engineering (SSE) community, promoted by the reinforcement of Web Services and Semantic Web technologies and the presence of new Cloud computing techniques, such as the proliferation of microservices solutions, have allowed software architects to experiment and develop new ways of building open and adaptable computer systems at runtime. Home automation, intelligent buildings, robotics, graphical user interfaces are some of the social atmosphere environments suitable in which to apply certain innovative trends. This paper presents a schema for the adaptation of Dynamic Computer Systems (DCS) using interdisciplinary techniques on model-driven engineering, service engineering and soft computing. The proposal manages an orchestrated microservices schema for adapting component-based software architectural systems at runtime. This schema has been developed as a three-layer adaptive transformation process that is supported on a rule-based decision-making service implemented by means of Machine Learning (ML) algorithms. The experimental development was implemented in the Solar Energy Research Center (CIESOL) applying the proposed microservices schema for adapting home architectural atmosphere systems on Green Buildings
An Empirical Evaluation On Vibrotactile Feedback For Wristband System
With the rapid development of mobile computing, wearable wrist-worn is
becoming more and more popular. But the current vibrotactile feedback patterns
of most wrist-worn devices are too simple to enable effective interaction in
nonvisual scenarios. In this paper, we propose the wristband system with four
vibrating motors placed in different positions in the wristband, providing
multiple vibration patterns to transmit multi-semantic information for users in
eyes-free scenarios. However, we just applied five vibrotactile patterns in
experiments (positional up and down, horizontal diagonal, clockwise circular,
and total vibration) after contrastive analyzing nine patterns in a pilot
experiment. The two experiments with the same 12 participants perform the same
experimental process in lab and outdoors. According to the experimental
results, users can effectively distinguish the five patterns both in lab and
outside, with approximately 90% accuracy (except clockwise circular vibration
of outside experiment), proving these five vibration patterns can be used to
output multi-semantic information. The system can be applied to eyes-free
interaction scenarios for wrist-worn devices.Comment: 10 pages
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