• Volume 9,Issue 3,2015 Table of Contents
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    • >Special Issue on Information Visualisation
    • Editorial

      2015, 9(3)-289.

      Abstract (2102) HTML (0) PDF 34.86 K (1165) Comment (0) Favorites

      Abstract:This special issue of the International Journal of Software and Informatics (IJSI) contains three papers that are based on papers originally presented at The 6th International Symposium on Visual Information Communication and Interaction (VINCI’13) which took place during 17-18 August 2013 in Tianjin, China. After the conference publication, authors were given ten months time until June 2014 to significantly expand their papers with new material and more detail. Papers then underwent twelve months of rigorous and multiple reviews and revisions. The result is this collection of papers that I have the pleasure to present here. This diverse selection offers the reader a sampling of some of the current research directions in information visualisation. I wish to acknowledge the authors for their contribution; the reviewers for their valuable suggestions that helped improve the quality of the papers; and the IJSI editorial staff for their assistance in producing this special issue.

    • Visual Analysis of Sentiment and Information Spread on Micro-Blog

      2015, 9(3):291-305.

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      Abstract:In this paper, we combined temporal analysis and spatial analysis together, and proposed the Electron Cloud Model (ECM) which is based on the Schrodinger equation and Niels Bohr atomic theory. The ECM is used to conduct temporal visual analysis of micro-blog sentiments. In the ECM, we made an attempt to mapping a score of sentiment to the electron stability and took neutral sentiments into consideration. We applied kernel density estimation and edge bundling to conduct space-varying visual analysis of sentiment. Kernel density estimation visualized sentiment changes in different levels of detail naturally while edge bundling was used to reduce visual clutter of edge crossing and reveal high-level edge patterns. Finally, we implemented an analysis system, conducted three case studies and made simple comparisons with other visualize methods.

    • A Framework for Situated Interaction with Augmented Surfaces

      2015, 9(3):307-329.

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      Abstract:We propose a framework for the construction of collaborative services, based on a technique for coding content - generated by authoritative organisations or by users - on physical surfaces, which thus become supports to different forms of interaction. In particular, we illustrate features of the conceptual framework of augmented surfaces, expressed via a UML profile, and of the architectural infrastructure supporting the flexible development of interactive applications and present different scenarios of interaction based on this framework. We argue that the possibility of combining situtated interaction on surfaces with other types of interaction would create a collaboration space in which documents and objects allow seamless access to both centralised and distributed information.

    • 3DRC Visualizations to Support the Reconciliation of Diverging Project Views

      2015, 9(3):331-354.

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      Abstract:In recent years there has been a growth in size and complexity of the projects managed by public or private organizations. This leads to increased probability of project failures, frequently due to the di culty and the ability to achieve the objectives such as on-time delivery, cost containment, expected quality achievement. In particular, one of the most common causes of project failure is the very high degree of uncertainty that a ects the expected performance of the project, especially when di erent stakeholders with divergent aims and goals are involved in the project. To address the prevention and proactive handling of the potential controversies among project stakeholders we propose the 3DRC visualization technique and its prototypical implementation. The approach is based on 3D radar charts to allow easier and more immediate analysis and management of the project views giving a contribution in reducing the project uncertainty and, consequently, the risk of project failure. In order to explore its potentiality, the approach has been implemented by developing the 3DRC Tool, applied to a real case and validated with promising results through a user study.

    • An Evaluation of the Utility of Large High-Resolution Displays for Comparative Scientific Visualisation

      2015, 9(3):355-370.

      Abstract (2683) HTML (0) PDF 15.32 M (1220) Comment (0) Favorites

      Abstract:In many disciplines, such as computer aided drug design, multiple simulation runs are performed with varying parameters, yielding ensembles of data sets. Comparative visualisation of these simulation results can help understanding the influence different parameters have. However, researchers might need to compare large numbers of variants. Single desktop monitors often do not have the resolution and screen size required for showing a whole ensemble at once with sufficient detail. Wall-sized high-resolution displays can be a solution for this problem. Although a number of studies has been conducted on how large high-resolution displays affect the speed and accuracy of certain tasks, only few of them are related to actual scientific visualisation tasks. We built a system for comparative visualisation of simulation results that can be used with conventional desktop monitors and with large high-resolution displays. We conducted a study using biochemical simulation data to evaluate the impact of screen size and 3D stereo output on a comparison task.