By Dana Lynn Driscoll, H. Allen Brizee, Michael Salvo, and Morgan Sousa
KEYWORDS: usability research, usability tests, Online Writing Lab, user-centered website
This article describes results of usability research conducted on the Online Writing Lab (OWL). The OWL is an information-rich educational website that provides free writing resources to users worldwide. Researchers conducted two generations of usability tests. In the first test, participants were asked to navigate the OWL and answer questions. Results of the first test and user-centered scholarship indicated that a more user-centered focus would improve usability. The second test asked participants to answer writing-related questions using both the OWL website and a user-centered OWL prototype. Participants took significantly less time to find information using the prototype and reported a more positive response to the user-centered prototype than the original OWL. Researchers conclude that a user-centered website is more effective and can be a model for information-rich online resources. Researchers also conclude that usability research can be a productive source of ideas, underscoring the need for participatory invention.
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Best practices for data visualization
By Jef Naidoo, Kim Campbell
Keywords
- IEEE Keywords
Data visualization, Visualization, Image color analysis, Best practices, Bibliographies, Systematics, Standards organizations
- Author Keywords
visualization modalities, Best practices for data visualization, data representation strategies
Abstract:
Data visualizations incorporate effective data representation strategies to integrate, unify and standardize data coming from different sources. Well-designed visual representations provide visual access to huge amounts of data in easily ingestible chunks. This promotes increased usage and enhanced learning, and facilitates better task performance. Our goal, therefore, was to provide business analytics stakeholders with a comprehensive report on what constitutes the best practices for data visualizations, so as to inform design strategies that foster insight.
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Pioneering research paves the way towards exascale optical networks
George Saridis, Dr Naoya Wada, Professor Dimitra Simeonidou
The joint work between the University's High Performance Networks Group (HPN), and NICT's Photonic Network System Laboratory, has investigated the role of space division multiplexing (SDM) technologies to unlock the full potential of optical networking.
With the soaring traffic demands of nearly a trillion online Internet of Things (IoT) devices and bandwidth hungry emerging applications, like ultra-high-definition (UHD) and 8K video streaming, cloud storage and processing, the need to increase network capacity is becoming critical.
To address this need, University of Bristol and NICT have worked together to exploit and demonstrate the potential of new types of multicore optical fibres to deliver higher capacity and flexibility in future optical networks.
Optical fibre networks and communication systems, mainly based on standard single mode fibre (SSMF) links, currently support most of the intensive global data communication needs.
Cutting-edge optical multicore fibres (MCFs) and similar types of SDM technologies can offer an opportunity to scale up the interconnection capacity, in modern optical networks. By using the space dimension, as well as frequency and time, the team'ss olutions have the ability to combine multiple streams of frequency/time multiplexed data in the same fibre structure, by either using different cores or/and light modes.
MCFs, comprised of tens of heterogeneous cores, are able to exhibit links of unprecedented capacity, in the range of multiple petabits per second (1 Pbit/sec = 1,000,000 Gbit/sec). There are potentially tremendous network capabilities in the exascale region, the success of which depends on the physical variations of MCFs characteristics and behaviour. SDMs tools and features are to be fully exploited in metro, core and data centre networks.
https://www.sciencedaily.com/releases/2016/09/160914090327.htm
Summary:
In the face of increasing bandwidth demands, ground-breaking research has demonstrated solutions for network infrastructure to address the looming network capacity crunch.