topauthor: Ebert_A* : Human-Computer Interaction Bibliography Search

[1] PerSoN-Vis: Visualizing Personal Social Networks (Ego Networks) Late-Breaking Works: Collaborative Technologies / Ezaiza, Hafez / Humayoun, Shah Rukh / AlTarawneh, Ragaad / Ebert, Achim Extended Abstracts of the ACM CHI'16 Conference on Human Factors in Computing Systems 2016-05-07 v.2 p.1222-1228

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Summary: Recently, we witness a high usage of social media platforms for different purposes, from contacting with friends and colleagues to raising voice for different causes. Many times, on such social media platforms people are also interested to see and analyze the connections not only with their connected people but also the connections between these connected people (called the ego network of a user). Hereby they want to find out different behavioral patterns and interesting findings. In this work, we introduce our developed visualization tool, called PerSoN-Vis (Personal Social Network Visualizer). It visualizes intuitively people ego-networks and enables them to explore interactively their social contacts and the relations between these contacts. Further, it allows them to filter the resulting visualization based on several collected features. A preliminary evaluation study shows that participants performed much better in our PerSoN-Vis tool compared to Socialab social-network visualization tool.

[2] Multivariate Networks: A Novel Edge Visualization Approach for Graph-based Visual Analysis Tasks Late-Breaking Works: Interaction in Specific Domains / Schöffel, Sebastian / Schwank, Johannes / Stärz, Jan / Ebert, Achim Extended Abstracts of the ACM CHI'16 Conference on Human Factors in Computing Systems 2016-05-07 v.2 p.2292-2298

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Summary: Providing insight in complex networks or graphs with multivariate data is one of the main challenges for visual analysis today. Much work has been done for visualizing information on nodes, but the space in between has mostly not been used yet. We present the current progress of our approach for using this free space to visualize additional information. We developed two techniques called Partially filled Bars and Bars of Varying Height. Both techniques enable presenting multiple attribute values on the edges of a network simultaneously. We briefly discuss first use cases for such interfaces as well as advantages and disadvantages of both techniques. For proof the concept, a preliminary evaluation has been performed. The results show, that both techniques are promising for many use cases.

[3] Collaborative Position Patterns for Pairs Working with Shared Tiled-Wall Display using Mobile Devices Posters / AlTarawneh, Ragaad / Jaber, Razan N. / Humayoun, Shah Rukh / Ebert, Achim Proceedings of the 2015 ACM International Conference on Interactive Tabletops and Surfaces 2015-11-15 p.259-264

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Summary: Recent advances in smart mobile devices (e.g., smartphones and tablets) encourage researchers to utilize them in collaborative environments as a medium of interaction with large shared interactive wall displays. Such collaborative setups have additional advantages over the previous ones, e.g., users' freedom to move around the environment, full view of the whole screen, etc. In this work, we focus on finding different possible collaborative position patterns for pairs of users working in a collaborative setup, equipped with a shared interactive tiled-wall display and multiple mobile devices. For this, we observed users in a controlled study with 36 participants, who performed the collaborative test in 18 pairs.

[4] Hi-AppV: Viewing Tabletop Application Windows on Mobile Devices Posters / Humayoun, Shah Rukh / Khan, Jahanzeb / Hasan, Syed Moiz / AlTarawneh, Ragaad / Ebert, Achim Proceedings of the 2015 ACM International Conference on Interactive Tabletops and Surfaces 2015-11-15 p.271-276

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Summary: In interactive surface supported collaborative environments, team members may need to look on some important information available on some hidden or minimized application in order to perform the collaborative task on the current active application, which may occupying the whole screen to give a better view to all team members. Targeting this issue, we provide Hi-AppV (Hidden Applications Viewer) framework that enables the team members to see the view-image of any currently opened application on tabletop (either hidden behind the current active application or minimized) to their mobile devices. Further, team members can also switch any opened application as the current active one through their mobile devices. Overall, the framework provides an intuitive interaction in the collaborative environment for performing collaborative tasks.

[5] ViZCom: Viewing, Zooming and Commenting through Mobile Devices Posters / Humayoun, Shah Rukh / Sharf, Mahmoud / AlTarawneh, Ragaad / Ebert, Achim / Catarci, Tiziana Proceedings of the 2015 ACM International Conference on Interactive Tabletops and Surfaces 2015-11-15 p.331-336

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Summary: In tabletop-supported collaborative environments, direct viewing or accessing to all parts of the screen is not possible in many cases. This could affect the performance of team members in executing the common collaborative tasks. Targeting this concern, we developed the ViZCom (Viewing, Zooming and Commenting) framework that enables the team members to view the tabletop screen on their mobile devices. It also facilitates them to zoom the screen view on their mobile devices through different zooming options. Further, it provides the facility to write comments or highlight screen parts on their mobile devices, which are then scaled proportionally and shown on the actual tabletop. Overall, the framework extends the collaborative environment by adding these mobile devices in order to provide more spatial flexibility.

[6] Virtual Buttons for Eyes-Free Interaction: A Study Accessibility / Bauer, Jens / Ebert, Achim Proceedings of IFIP INTERACT'15: Human-Computer Interaction, Part I 2015-09-14 v.1 p.47-54

Keywords: Eyes-free; Evaluation; Virtual buttons; Mobile devices

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Summary: The touch screen of mobile devices, such as smart phones and tablets, is their primary input mechanism. While designed to be used in conjunction with its output capabilities, eyes-free interaction is also possible and useful on touch screens. One of the several possible techniques for eyes-free interaction is the virtual button method, where the screen is divided into a regular grid of buttons that can be pressed even without looking at the screen.
This paper contains an exploratory study about influence factors on this interaction method. Results indicate, that not only the size of the buttons matter, but also the device orientation and user dependent factors, such as the age or general experience with touch screens. By involving small children in the evaluation we can see the validity of this approach even for the youngest users.

[7] An Interactive Approach for Inspecting Software System Measurements HCI for Global Software Development / Khan, Taimur / Barthel, Henning / Amrhein, Karsten / Ebert, Achim / Liggesmeyer, Peter Proceedings of IFIP INTERACT'15: Human-Computer Interaction, Part III 2015-09-14 v.3 p.1-8

Keywords: Software comprehension; Software measurement; Interactive visual analysis; Visual query specification; Software visualization

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Summary: In recent times, visual analysis has become increasingly important, especially in the area of software measurement, as most of the data from software measurement is multivariate. In this regard, standard software analysis tools are limited by their lack of ability to process huge collections of multidimensional data sets; current tools are designed to either support only well-known metrics or are too complicated to use for generating custom software metrics. Furthermore, the analyst requires extensive knowledge of the underlying data schemas and the relevant querying language. To address these shortcomings, we propose an interactive visual approach that focuses on visual elements, their configurations, and interconnectivity rather than a data ontology and querying language. In order to test and validate our methodology, we developed a prototype tool called VIMETRIK (Visual Specification of Metrics). Our preliminary evaluation study illustrates the intuitiveness and ease-of-use of our approach to understand software measurement and analysis data.

[8] A Hybrid Approach for Visualizing Spatial and Non-spatial Data Types of Embedded Systems Interactive Posters / AlTarawneh, Ragaad / Humayoun, Shah Rukh / Ebert, Achim Proceedings of IFIP INTERACT'15: Human-Computer Interaction, Part IV 2015-09-14 v.4 p.495-498

Keywords: 3D visualization; Graph visualization; Stereoscopic depth; Integrating spatial data; Non-spatial data

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Summary: Due to the heterogeneity nature of embedded systems, visualizing them from different perspectives requires including different data sets about the underlying system. This opens the doors to think about integrating between the spatial and the non-spatial data sets in this domain. In this work, we present the SceneMan (Scene Manager) platform that integrates between the different data sets using a 2Dplus3D style to reflect the system from different perspectives. In this context, we visualize the non-spatial data using the normal 2D representation, which can be converted to a 3D representation in some cases such that the stereoscopic depth cue is used to encode some aspects about this data set. Additionally, we visualize the spatial data using 3D visualization techniques. This hybrid solution provides the possibility to bridge the gap between the 2D representations and the 3D visualizations.

[9] Workshop on Designing Interaction and Visualization for Mobile Applications (DIViM 2015) Workshops / Humayoun, Shah Rukh / Ebert, Achim / Hess, Steffen / van der Veer, Gerrit Proceedings of IFIP INTERACT'15: Human-Computer Interaction, Part IV 2015-09-14 v.4 p.675-676

Keywords: Interaction design; Visualization; Mobile app development

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Summary: The DIViM 2015 workshop focuses on different issues and limitations regarding designing intuitive interaction and visualization for mobile applications and devices, as well as how to overcome these limits through novel approaches and techniques.

[10] Live-Feedback Supported Collaborative Environment for Emergency Scenarios Posters / Humayoun, Shah Rukh / Avtandilov, Artem / Mehdi, Syed Atif / Ebert, Achim / Berns, Karsten Companion Proceedings of ACM CSCW 2015 Conference on Computer-Supported Cooperative Work and Social Computing 2015-03-14 v.2 p.147-150

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Summary: Knowing the up-to-date information about the emergency environment and collaboration between the central Health Service Center (HSC) and the mobile rescue team can be very useful in properly executing the rescue operations, especially in the case of elderly patients. In this paper, we present our live-feedback supported collaborative environment that consists of: autonomous mobile robot on elderly patient's home for knowing up-to-date information about the emergency place, a central communicating system at HSC to manage the overall rescue operation, and a mobile platform that enables the rescue team to collaborate with HSC and the robot at the emergency place in order to know accurately the current emergency situation. This whole setup enables the rescue team to perform the rescue operation more efficiently and effectively.

[11] ExpanD: a stereoscopic expanding technique for compound graphs Poster abstracts / AlTarawneh, Ragaad / Humayoun, Shah Rukh / Ebert, Achim Proceedings of the 2014 ACM Symposium on Virtual Reality Software and Technology 2014-11-11 p.223-224

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Summary: In this work, we present a new technique, called ExpanD, for expanding compound nodes in stereoscopic platforms. In this technique, stereoscopic depth is used to encode the structural relationships in compound graphs using the containment representation, while explicit edges are used to represent the adjacency relations between the graph nodes. Further, stereoscopic depth is used to show the parent-child relations in such a manner that the children level is rendered in a plane closer to the viewer than the parent node. The technique provides a novel interactive operation for expanding or contracting nodes in order to align graph nodes in the 3D space with minimum occlusion. Different visual cues are used together to encode other data aspects, e.g., color to encode node status, shape to encode node type, and stereoscopic depth to encode hierarchical relations between nodes.

[12] MuGIS multi-user geographical information system Poster Presentations / Schöffel, Sebastian / Schwank, Johannes / Ebert, Achim Proceedings of 2014 Conference on Human-Computer Interaction with Mobile Devices and Services 2014-09-23 p.477-482

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Summary: Collaboration between users of a system is often a crucial factor for reaching given goals in an effective and efficient way. However, in many application domains, the current systems do not sufficiently support collaborative work (sometimes they even don't support it at all). One good example is geographical information systems (GIS), that usually only follow an one user at one time approach. In this paper, we present the development of a scalable Multi-user Geographical Information System (MuGIS). With MuGIS it is now possible to integrate large display environments with mobile smart devices for remote control. The system is deployed as a client-server architecture. It uses the NASA World Wind Java framework and SOAP web services for communication. On the client side, all common mobile smart devices are supported. The underlying concept provides different user roles and multi-user identification.

[13] PID-MAD 2014: second international workshop on prototyping to support the interaction designing in mobile application development Workshop summaries / Humayoun, Shah Rukh / Hess, Steffen / Ebert, Achim / Dubinsky, Yael Proceedings of 2014 Conference on Human-Computer Interaction with Mobile Devices and Services 2014-09-23 p.573-576

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Summary: The current mobile paradigm is in many ways fundamentally different from the conventional desktop paradigm due to many factors such as multi-touch gesture interaction, usage of sensors, single-task focused model, etc. These factors mean several new challenges for the interaction designers with regard to communicating their ideas and thoughts during early design activities, which they might be unable to tackle properly using traditional prototyping techniques. Therefore, we envision that research must address the need for a change in existing prototyping techniques as well as focus on novel prototyping approaches and frameworks that would support not only the interaction design process but also the whole development process of mobile app development. In the footsteps of the first workshop, PID-MAD 2014 provides a platform to the interested communities for discussing issues and will bring together researchers and practitioners for sharing their knowledge and experience in order to tackle the upcoming challenges.

[14] Patterns for Designing Scalable Mobile App User Interfaces for Multiple Platforms Work in progress papers / Humayoun, Shah Rukh / Hess, Steffen / Kiefer, Felix / Ebert, Achim Proceedings of the 28th BCS International Conference on Human-Computer Interaction 2014-09-12 p.43

ewic.bcs.org/content/ConWebDoc/54231

Summary: This paper proposes sets of patterns useful in designing scalable mobile app user interfaces targeted at multiple mobile platforms. These sets of patterns, called mobile-UiTS patterns, are derived from mobile platform vendors' style guidelines and the common practices found in existing mobile apps. The resulting patterns provide solutions in specific contexts for the transition of mobile app UI design and interaction from one platform to the other ones, and also tackle the scaling issues that arise when moving a mobile app from small-size smart devices (phones) to large-size smart devices (tablets) and vice versa. In this work, we focus mainly on the categorization of these patterns and provide a template for writing the pattern description.

[15] Adding Multi-Touch Gesture Interaction in Mobile Web Applications Gesture-Based Interaction / Humayoun, Shah Rukh / Rupprecht, Franca-Alexandra / Hess, Steffen / Ebert, Achim HCI International 2014: 16th International Conference on HCI, Part II: Advanced Interaction Modalities and Techniques 2014-06-22 v.2 p.48-57

Keywords: Smart Devices; Smartphones; Tablets; Mobile Apps; Web Apps; Multi-Touch Gesture; Interaction Design; Mobile Environments

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Summary: This paper describes the MTGest framework, an open library for adding multi-touch gesture interaction to HTML-based mobile web applications. MTGest was used in a comparative study to evaluate the multi-touch gesture interaction in a mobile web application in comparison to a native iOS mobile application. The results indicates that in most cases the web based gestures efficiency is either approximately the same or higher than the iOS-based app. The study was carried out as an initial experiment using isolated gestures, targeting the iOS platform only. For generalizing the results there is a need to perform detailed user evaluation studies with different platforms and for more complex interaction scenarios.

[16] ESSAVis++: an interactive 2Dplus3D visual environment to help engineers in understanding the safety aspects of embedded systems Demo session / AlTarawneh, Ragaad / Bauer, Jens / Humayoun, Shah Rukh / Ebert, Achim / Liggesmeyer, Peter ACM SIGCHI 2014 Symposium on Engineering Interactive Computing Systems 2014-06-17 p.201-204

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Summary: In this paper, we present demonstration of a 2Dplus3D visual interactive environment called ESSAVis++. It is an enhanced version of the ESSAVis platform and was designed to overcome the limitations of the previous version. Its goal is to facilitate the collaboration between different engineers and to lead to better understanding of the analyzing process of safety aspects in embedded systems. In this work, we provide an overview of ESSAVis++ platform and focus on the new modifications and the set of improvements that we added for providing the enhanced and intuitive visualization features to facilitate extracting important safety aspects about the underlying embedded system.

[17] Enhancing understanding of safety aspects in embedded systems through an interactive visual tool Demonstrations / AlTarawneh, Ragaad / Bauer, Jens / Humayoun, Shah Rukh / Ebert, Achim / Liggesmeyer, Peter Companion Proceedings of the 2014 International Conference on Intelligent User Interfaces 2014-02-24 v.2 p.9-12

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Summary: In this work, we present a demonstration of a visual interactive tool called ESSAVis that helps different engineers in collaborating together for understanding the failure mechanisms in complex embedded systems. ESSAVis provides a 2Dplus3D visual user interface that integrates intuitively between different data sets related with embedded systems failure mechanisms. The tool accepts a CFT model describing a specific hazard in the underlying system, and a CAD model describing the geometry of system components. In this paper, we present different interaction options of ESSAVis that are used for intuitively extracting safety aspects of the underlying embedded system.

[18] A visual interactive environment for enhancing collaboration between engineers for the safety analysis mechanisms in embedded systems Posters / AlTarawneh, Ragaad / Bauer, Jens / Ebert, Achim Companion Proceedings of ACM CSCW 2014 Conference on Computer-Supported Cooperative Work and Social Computing 2014-02-15 v.2 p.125-128

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Summary: Maintaining modern embedded systems requires close collaboration between engineers who designed them and engineers who analyzed possible failures in such systems in order to avoid any possible hazard. In this work, we present a collaborative visual platform that supports the safety analysis process of such systems in a collaborative manner. The platform consists of one large display and multiple smart devices (i.e., smartphones or tablets) through which users interact with the visual elements on the large display for understanding the failure mechanisms of the underlying system. This whole environment provides an intuitive visual interaction to speed up the communication between different users from different backgrounds.

[19] ESSAVis: a 2Dplus3D visual platform for speeding up the maintenance process of embedded systems Work in progress papers / AlTarawneh, Ragaad / Bauer, Jens / Keller, Patric / Ebert, Achim Proceedings of the 27th BCS International Conference on Human-Computer Interaction 2013-09-09 p.43

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Summary: Modern embedded systems contain complex structures, as they are composed of many subsystems. Maintaining such systems requires collaboration between the engineers who designed them and the engineers who analyzed the failures in them. In this paper we present our proposed visual platform ESSAVis, a 2Dplus3D environment, to help both kinds of engineers in understanding the failure mechanisms of such systems. The goal of the proposed platform is to improve the understanding of the failure mechanisms in these systems and to reduce the communication gap between the system engineers and safety engineers. We describe the design process and the implementation of the 2Dplus3D visual platform, which was accomplished through a continuous end-user feedback. We designed a detailed evaluation study, in which we aim to measure the usability of our tool. The plan of the evaluation is designed with the help of the end-users to ensure that ESSAVis fulfills the expected goals in speeding up the analyzing process of safety aspects of embedded systems.

[20] i2ME: a framework for building interactive mockups Posters / Humayoun, Shah Rukh / Hess, Steffen / Kiefer, Felix / Ebert, Achim Proceedings of 2013 Conference on Human-computer interaction with mobile devices and services 2013-08-27 2013-08-27 p.606-611

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Summary: Providing interactive mockups of mobile applications in designing phases introduces new challenges for interaction designers compared to the traditional way of static mockups. In particular, the complexity of this process increases when it comes to enabling the user to actually explore the intended user experience of the mobile environment by enhancing traditional handmade sketches or tool-generated wireframes with concrete mobile interaction elements. We introduce a framework, called i2ME (interactive Mockup-Building for Mobile Environment), for building interactive mockups with concrete mobile interaction elements. The framework enhances the static mockups (handmade or tool-generated) with screen transitions and multi-touch gestures, and enables the deployment of the resulting HTML5+JavaScript based interactive mockups to multiple platforms and device classes.

[21] Workshop on prototyping to support the interaction designing in mobile application development (PID-MAD 2013) Workshops / Humayoun, Shah Rukh / Hess, Steffen / Ebert, Achim Proceedings of 2013 Conference on Human-computer interaction with mobile devices and services 2013-08-27 2013-08-27 p.633-636

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Summary: Recent changes in the mobile environment; such as the addition of multi-touch gestures, usage of sensors, or single-focused mobile apps; brought several challenges for interaction designers in communicating their ideas and thoughts enduring early design activities. Traditional prototyping techniques may not provide sufficient support due to the lack of current mobile interaction paradigms in them. Therefore, a shift is required in prototyping techniques and approaches in order to support properly the interaction design process of mobile application development for the current mobile environment.
Targeting these concerns, the workshop envisions that the research must address the need for a change in existing prototyping techniques as well as focusing on novel prototyping approaches and frameworks that would support not only the interaction design process but the whole development process of mobile application development.

[22] Developing Mobile Apps Using Cross-Platform Frameworks: A Case Study User Interface Design and Development Methods and Environments / Humayoun, Shah Rukh / Ehrhart, Stefan / Ebert, Achim HCI International 2013: 15th International Conference on HCI, Part I: Human-Centred Design Approaches, Methods, Tools, and Environments 2013-07-21 v.1 p.371-380

Keywords: Cross-platform development; mobile apps; iOS; Android; smart-device; smartphone; tablet; user evaluation

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Summary: In last few years, a huge variety of frameworks for the mobile cross-platform development have been released to deliver quick and overall better solutions. Most of them are based on different approaches and technologies; therefore, relying on only one for using in all cases is not recommendable. The diversity in smart-devices (i.e. smartphones and tablets) and in their hardware features; such as screen-resolution, processing power, etc.; as well as the availability of different mobile operating systems makes the process of mobile application development much complicated. In this work, we analyze few of these cross-platform development frameworks through developing three mobile apps on each of them as well as on the native Android and iOS environments. Moreover, we also performed a user evaluation study on these developed mobile apps to judge how users perceive the same mobile app developed in different frameworks and environments, from the native to the cross-platform environment. Results indicate that these frameworks are good alternative to the native platform implementations but a careful investigation is required before deciding to check whether the target framework supports the needed features in a stable way.

[23] TangibleRings: nestable circular tangibles Tactile / Ebert, Achim / Weber, Christopher / Cernea, Daniel / Petsch, Sebastian Extended Abstracts of ACM CHI'13 Conference on Human Factors in Computing Systems 2013-04-27 v.2 p.1617-1622

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Summary: The multitouch functionality of tabletop computers is often augmented by the use of tangible objects that offer an intuitive and haptic alternative to interaction and manipulation. However, employing tangibles can also lead to less desirable effects, such as occlusion or lack of precision. In this paper we highlight the design and implementation of ring-like tangible objects: TangibleRings. They do not occlude the objects underneath them and also support the detection of touch events inside their perimeter. Additionally, multiple rings may be nested within one another in order to combine ring functionality or produce more complex filters.

[24] Tangible and Wearable User Interfaces for Supporting Collaboration among Emergency Workers Emergency Scenarios / Cernea, Daniel / Mora, Simone / Perez, Alfredo / Ebert, Achim / Kerren, Andreas / Divitini, Monica / de la Iglesia, Didac Gil / Otero, Nuno CRIWG 2012: Collaboration and Technology 2012-09-16 p.192-199

Keywords: Wearable tangible device; collaborative crisis management

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Summary: Ensuring a constant flow of information is essential for offering quick help in different types of disasters. In the following, we report on a work-in-progress distributed, collaborative and tangible system for supporting crisis management. On one hand, field operators need devices that collect information -- personal notes and sensor data -- without interrupting their work. On the other hand, a disaster management system must operate in different scenarios and be available to people with different preferences, backgrounds and roles. Our work addresses these issues by introducing a multi-level collaborative system that manages real-time data flow and analysis for various rescue operators.

[25] ModControl -- Mobile Phones as a Versatile Interaction Device for Large Screen Applications Interacting with Displays / Deller, Matthias / Ebert, Achim Proceedings of IFIP INTERACT'11: Human-Computer Interaction 2011-09-05 v.2 p.289-296

Keywords: Interaction framework; Distributed interfaces; Input devices and strategies; User-Centered Design

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Summary: Large, public displays are increasingly popular in today's society. For the most part, however, these displays are purely used for information or multimedia presentation, without the possibility of interaction for viewers. On the other hand, personal mobile devices are becoming more and more ubiquitous. Though there are efforts to combine large screens with mobile devices, the approaches are mostly focused on mobiles as control devices, or they are fitted to specific applications. In this paper, we present the ModControl framework, a configurable, modular communication structure that enables large screen applications to connect with personal mobile devices and request a set of configurable modules, utilizing the device as a personalized mobile interface. The main application can easily make use of the highly sophisticated interaction features provided by modern mobile phones. This facilitates new, interactive appealing visualizations that can be actively controlled with an intuitive, unified interface by single or multiple users.