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An experiment was conducted to add empirical evidence whether the use of visualization is better than text in the communication of business strategies. Seventy-four managers who took part in an Executive MBA program saw a presentation of the simplified strategy of BMW Financial Services. The visual support of the presentation was manipulated by the author and the according effects were measured. Three...
While there has been significant progress in the treatment of ischemic heart failure, it remains a significant health and economic problem worldwide. In this paper, we present the challenges of modelling ischemic heart failure and introduce a user-friendly software system that will be a sub-set of the Virtual Pathological Heart environment which is currently being developed under the FP7 VPH2 project...
This paper presents an exploratory empirical study about users' reception and usage behavior with interactive information graphics. 14 participants took part in the study. We assume users to act interest-driven. Therefore no explicit tasks were assigned to participants. In order not to distract the user, retrospective thinking aloud was employed. Results show that (1) usage durations were heterogeneous...
Rapid growth in the availability of digital libraries of K-12 curriculum, coupled with an increased emphasis on standard-based teaching has led to the development of automated standard assignment tools. To assess the performance of one of those tools and to gain insight into the differences between how human catalogers and automated tools conduct these standard assignments, we explore the use of network...
Bipartite graphs are often used to illustrate relationships between two sets of data, such as web pages and visitors. At the same time, information is often organized hierarchically, for example, web pages are divided into directories by their contents. The hierarchical structures are useful for analyzing information. Graphs with both a bipartite structure and a hierarchical structure are called “clustered...
Citation networks form directed acyclic graphs. Visualisation of the reference relationships within the network requires fast determination of ancestor-descendant relationships among the nodes within the digraph. Polytrees (singly connected digraphs) constitute an important class of acyclic digraphs and can be viewed as generalised directed trees where multiple parent nodes are permitted. In this...
Vision is central in human perception. Images are everywhere. Real life applications produce and use huge amounts of different types images. Retrieving an image having some characteristics in a big database is a crucial task. We need then mechanisms for indexing and retrieving images. CBIR (Content Based Image Retrieval) systems perform these tasks by indexing images using the physical characteristics...
This paper holds as its core objective the report of the research developed towards the conceptualisation and prototyping of an Information Visualisation system capable of providing a quick and accurate view of the set of data collected by the SAPO Broker web service regarding access activity in the SAPO news website. SAPO Broker, a real-time monitoring application that collects data generated by...
Awareness of shared work activities is important for fostering professional relationships. This paper introduces visualization techniques for a meeting support system based on automatic speech recognition and multisensory meeting information capture, including voice levels and participant comments. The system has been deployed in live meetings over the past 5 months and we report meeting participants'...
The orientation towards data in arts, humanities and pop culture in recent years brings a renewed interest in realism and iconoclasm. The various APIs (Application programming interfaces) and mashups that are employed in these traditionally “qualitative” disciplines offer tools for creative and often critical interpretations. Data are becoming means of a critical distance to the visual and media saturated...
The large and ever-increasing amounts of time-varying and geospatial digital weather information related to emergency scenarios that must be accessible to the public represent a major research challenge. A need to analyze and make decisions, often in time-critical situations, demand interactive web-enabled visualization tools that can aid the user to explore, communicate and publish visually large...
Photo-sharing websites such as Flickr and Panoramio contain millions of geotagged images contributed by people from all over the world. Characteristics of these data pose new challenges in the domain of spatio-temporal analysis. In this paper, we define several different tasks related to analysis of attractive places, points of interest and comparison of behavioral patterns of different user communities...
Although the application of sketch-based chart annotation is not pervasive in management, the use of sketchmarks can provide numerous benefits to managerial discussions. The collaborative use of chart annotations can support management teams in their decision making based on quantitative charts by visually eliciting and capturing interpretation processes, clarifying basic assumptions, stimulating...
The transition from ephemeral, ceremonial art to more permanent acrylic-on-board paintings has made Australian Aboriginal art more accessible to the public than ever before. However, early examples contained secret/sacred motifs and stories - knowledge recorded in the paintings that was normally only made available to initiates. In turn, this prompted contemporary Australian Aboriginal artists to...
The advent of consumer-generated and social media has led to a continuous expansion and diversification of the media landscape. Media consumers frequently find themselves assuming the role of media analysts in order to satisfy personal information needs. We propose to employ Knowledge Visualization methods in support of complex media analysis tasks. In this paper, we describe an approach which depicts...
This paper presents a user study performed to compare the usability of the Wiimote as an input device to visualize information and navigate in Google Earth using two different configurations. This study had the collaboration of 15 participants which performed a set of tasks using the Wiimote as an input device while the image was projected on a common projection screen, as well as a mouse on a desktop...
This paper presents a report of a system that delivers customized video content to mobile devices. Constructed from open source components, it can stream transcoded video to mobile devices in real-time. In addition, it allows publishers to add content into their video streams on-the-fly. As a demonstration of this system's capabilities, an application was designed to deliver transcoded Adobe Flash...
The Bobox project is a parallelization framework based on the idea of putting together a number of simple components to create a data processing, non-linear pipeline. The structure (the model) of the pipeline a directed graph, but with several specific properties. In order to display the pipeline in a debugger application that is a part of the framework, we have adapted some of the graph drawing algorithms...
The work presented in this paper aims at exploring new ways of integrating, visualizing and interacting with geotechnical and geophysical data that may be more rich and interactive than those offered by most current Geographic Information Systems (GIS). Some visualization techniques enabling simultaneous visualization of the several data types available in our case study are proposed. Moreover, methods...
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