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Displaying 1-50 out of 207 total
Supporting the uninitiated in user-centered design
Found in: interactions
By Maria Ralph, Petra Björndal
Issue Date:March 2014
pp. 60-65
Practicing UCD is vital to helping non-UX practitioners acquire an understanding of this new mindset.
     
Integrating profile-driven parallelism detection and machine-learning-based mapping
Found in: ACM Transactions on Architecture and Code Optimization (TACO)
By Björn Franke, Georgios Tournavitis, Michael F. P. O'boyle, Zheng Wang
Issue Date:February 2014
pp. 1-26
Compiler-based auto-parallelization is a much-studied area but has yet to find widespread application. This is largely due to the poor identification and exploitation of application parallelism, resulting in disappointing performance far below that which a...
     
CrowdCrit: crowdsourcing and aggregating visual design critique
Found in: Proceedings of the companion publication of the 17th ACM conference on Computer supported cooperative work & social computing (CSCW Companion '14)
By Amy Pavel, Björn Hartmann, Jari-lee Tolentino, Kurt Luther, Maneesh Agrawala, Steven P. Dow, Wei Wu
Issue Date:February 2014
pp. 21-24
People who create visual designs often struggle to find high-quality critique outside a firm or classroom, and current online feedback solutions are limited. We created a system called CrowdCrit which leverages paid crowdsourcing to generate and visualize ...
     
Positional acts: using a Kinect#8482; sensor to reconfigure patient roles within radiotherapy treatment
Found in: Proceedings of the 8th International Conference on Tangible, Embedded and Embodied Interaction (TEI '14)
By Björn Yttergren, Erik Stolterman, Tara Mullaney
Issue Date:February 2014
pp. 93-96
With many medical procedures done today, patients are forced to act as passive recipients of care, while nurses and doctors are actively involved in the process of diagnosis or treatment. In this paper, we focus upon patient positioning for radiotherapy tr...
     
Should your MOOC forum use a reputation system?
Found in: Proceedings of the 17th ACM conference on Computer supported cooperative work & social computing (CSCW '14)
By Armando Fox, Björn Hartmann, Derrick Coetzee, Marti A. Hearst
Issue Date:February 2014
pp. 1176-1187
Massive open online courses (MOOCs) rely primarily on discussion forums for interaction among students. We investigate how forum design affects student activity and learning outcomes through a field experiment with 1101 participants on the edX platform. We...
     
"Figure out how to code with the hands of others": recognizing cultural blind spots in global software development
Found in: Proceedings of the 17th ACM conference on Computer supported cooperative work & social computing (CSCW '14)
By Lise Møller Petersen, Pernille Bjørn, Stina Matthiesen
Issue Date:February 2014
pp. 1107-1119
We report on an ethnographic study of an outsourcing global software development (GSD) setup between an Indian IT vendor and an IT development division of a Danish bank. We investigate how the local IT development work is shaped by the global setup in GSD ...
     
The acoustics of eye contact: detecting visual attention from conversational audio cues
Found in: Proceedings of the 6th workshop on Eye gaze in intelligent human machine interaction: gaze in multimodal interaction (GazeIn '13)
By Florian Eyben, Björn W. Schuller, Felix Weninger, Lucas Paletta
Issue Date:December 2013
pp. 7-12
An important aspect in short dialogues is attention as is manifested by eye-contact between subjects. In this study we provide a first analysis whether such visual attention is evident in the acoustic properties of a speaker's voice. We thereby introduce t...
     
ERM4HCI 2013: the 1st workshop on emotion representation and modelling in human-computer-interaction-systems
Found in: Proceedings of the 15th ACM on International conference on multimodal interaction (ICMI '13)
By Björn Schuller, Christian Becker-Asano, Jonathan Gratch, Kim Hartmann, Klaus R. Scherer, Ronald Böck
Issue Date:December 2013
pp. 607-608
This paper presents a brief summary of the first workshop on Emotion Representation and Modelling in Human-Computer-Interaction-Systems. The ERM4HCI 2013 workshop is held in conjunction with the ICMI 2013 conference. The focus is on theory driven represent...
     
CGA integration into IPsec/IKEv2 authentication
Found in: Proceedings of the 6th International Conference on Security of Information and Networks (SIN '13)
By Ahmad Alsa'deh, Björn Groneberg, Christoph Meinel, Florian Westphal, Marian Gawron
Issue Date:November 2013
pp. 326-330
In IPv6 networks, two security mechanisms are available at the network-layer; SEcure Neighbor Discovery (SEND) and IP security (IPsec). Although both provide authentication, neither subsumes the other; both SEND and IPsec mechanisms should be deployed toge...
     
Continuous security evaluation and auditing of remote platforms by combining trusted computing and security automation techniques
Found in: Proceedings of the 6th International Conference on Security of Information and Networks (SIN '13)
By Christian Gehrmann, Mats Björkman, Mudassar Aslam
Issue Date:November 2013
pp. 136-143
In many new distributed systems paradigms such a cloud computing, Internet of Things (IoT), electronic banking, etc. the security of the host platforms is very critical which is managed by the platform owner. The platform administrators use security automa...
     
Improving minimum flow rate in wireless mesh networks by effective placement of directional antennas
Found in: Proceedings of the 16th ACM international conference on Modeling, analysis & simulation of wireless and mobile systems (MSWiM '13)
By Michał Pióro, Yuan Li, Björn Landfeldt
Issue Date:November 2013
pp. 15-22
For some time, directional antennas have been considered to solve connectivity and interference issues in wireless networks. Several scenarios have been presented and often the conclusions drawn are positive, showing increase in capacity. However, to date ...
     
An index for efficient semantic full-text search
Found in: Proceedings of the 22nd ACM international conference on Conference on information & knowledge management (CIKM '13)
By Björn Buchhold, Hannah Bast
Issue Date:October 2013
pp. 369-378
In this paper we present a novel index data structure tailored towards semantic full-text search. Semantic full-text search, as we call it, deeply integrates keyword-based full-text search with structured search in ontologies. Queries are SPARQL-like, with...
     
Workshop summary for the 3rd international audio/visual emotion challenge and workshop (AVEC'13)
Found in: Proceedings of the 21st ACM international conference on Multimedia (MM '13)
By Roddy Cowie, Björn Schuller, Jarek Krajewski, Maja Pantic, Michel Valstar
Issue Date:October 2013
pp. 1085-1086
The third Audio-Visual Emotion Challenge and workshop AVEC 2013 will be held in conjunction ACM Multimedia'13. Like the 2012 edition of AVEC, the workshop/challenge addresses the interpretation of social signals represented in both audio and video in terms...
     
Recent developments in openSMILE, the munich open-source multimedia feature extractor
Found in: Proceedings of the 21st ACM international conference on Multimedia (MM '13)
By Björn Schuller, Felix Weninger, Florian Eyben, Florian Gross
Issue Date:October 2013
pp. 835-838
We present recent developments in the openSMILE feature extraction toolkit. Version 2.0 now unites feature extraction paradigms from speech, music, and general sound events with basic video features for multi-modal processing. Descriptors from audio and vi...
     
AVEC 2013: the continuous audio/visual emotion and depression recognition challenge
Found in: Proceedings of the 3rd ACM international workshop on Audio/visual emotion challenge (AVEC '13)
By Bihan Jiang, Björn Schuller, Florian Eyben, Kirsty Smith, Maja Pantic, Michel Valstar, Roddy Cowie, Sanjay Bilakhia, Sebastian Schnieder
Issue Date:October 2013
pp. 3-10
Mood disorders are inherently related to emotion. In particular, the behaviour of people suffering from mood disorders such as unipolar depression shows a strong temporal correlation with the affective dimensions valence and arousal. In addition, psycholog...
     
Sauron: embedded single-camera sensing of printed physical user interfaces
Found in: Proceedings of the 26th annual ACM symposium on User interface software and technology (UIST '13)
By Björn Hartmann, Colin Chang, Valkyrie Savage
Issue Date:October 2013
pp. 447-456
3D printers enable designers and makers to rapidly produce physical models of future products. Today these physical prototypes are mostly passive. Our research goal is to enable users to turn models produced on commodity 3D printers into interactive object...
     
Challenges of using mobile devices in process industry
Found in: Proceedings of the 11th Asia Pacific Conference on Computer Human Interaction (APCHI '13)
By Elina Vartiainen, Maria Ralph, Petra Björndal
Issue Date:September 2013
pp. 258-263
Almost everyone today owns some type of mobile device that is not only being used for routine tasks such as making phone calls, but also for more advanced tasks such as social networking. Advances in hardware technology have seen the cost of mobile devices...
     
Challenges of using information technology onboard ships
Found in: Proceedings of the 11th Asia Pacific Conference on Computer Human Interaction (APCHI '13)
By Elina Vartiainen, Maria Ralph, Petra Björndal
Issue Date:September 2013
pp. 226-230
The use of technology onboard ships is not typically studied within the HCI community due mainly to the challenges researchers face in gaining access to these environments. However, there is now a higher number of technological devices being used onboard s...
     
Bundle protocol mail convergence layer: leveraging legacy internet infrastructure for DTNs
Found in: Proceedings of the 8th ACM MobiCom workshop on Challenged networks (CHANTS '13)
By Björn Gernert, Lars Wolf, Sebastian Schildt
Issue Date:September 2013
pp. 37-42
In the past many research prototypes employed a DTN to provide mail services to remote areas. This work proposes the opposite: Using SMTP and IMAP to transport the Bundle Protocol (BP). Despite the obvious feasibility of such a scheme, we will show that th...
     
homeBLOX: introducing process-driven home automation
Found in: Proceedings of the 2013 ACM conference on Pervasive and ubiquitous computing adjunct publication (UbiComp '13 Adjunct)
By Björn Wiedersheim, Florian Schaub, Julia Greim, Marcel Walch, Michael Rietzler, Michael Weber
Issue Date:September 2013
pp. 801-808
Home automation promises more convenience for residential living. We propose process-driven home automation as an approach to reduce the difficulty of specifying automation tasks without restricting users in terms of customizability and complexity of suppo...
     
homeBLOX: making home automation usable
Found in: Proceedings of the 2013 ACM conference on Pervasive and ubiquitous computing adjunct publication (UbiComp '13 Adjunct)
By Björn Wiedersheim, Florian Schaub, Julia Greim, Marcel Walch, Michael Rietzler, Michael Weber
Issue Date:September 2013
pp. 295-298
Home automation aims to increase convenience of residential living. The homeBLOX system uses a process-driven execution model to enable complex automation tasks with heterogeneous devices, while providing a user interface that abstracts from lower-level co...
     
Some like it hot: automating an electric kettle using PalCom
Found in: Proceedings of the 2013 ACM conference on Pervasive and ubiquitous computing adjunct publication (UbiComp '13 Adjunct)
By Björn A. Johnsson, Boris Magnusson
Issue Date:September 2013
pp. 63-66
In this demo we will show how devices from different vendors, using different protocols, can be combined and made to work together without detailed low-level programming by the user. The small example we have chosen uses a radio-controlled power socket fro...
     
Find my stuff: supporting physical objects search with relative positioning
Found in: Proceedings of the 2013 ACM international joint conference on Pervasive and ubiquitous computing (UbiComp '13)
By Bastian Könings, Björn Wiedersheim, Florian Schaub, Jens Nickels, Michael Weber, Pascal Knierim, Steffen Musiol
Issue Date:September 2013
pp. 325-334
Searching for misplaced keys, phones, or wallets is a common nuisance. Find My Stuff (FiMS) provides search support for physical objects inside furniture, on room level, and in multiple locations, e.g., home and office. Stuff tags make objects searchable w...
     
Challenges with high quality mobile graphics
Found in: ACM SIGGRAPH 2013 Mobile (SIGGRAPH '13)
By Jan-Harald Fredriksen, Marius Bjørge, Sam Martin, Sandeep Kakarlapudi
Issue Date:July 2013
pp. 1-1
Mobile GPUs are widely expected to edge into the low hundreds of GFlops inside the next few years. On this measure, they will be in the same range as current console GPUs, but considerable differences exist between the architectures that make this basic co...
     
An expressive text-driven 3D talking head
Found in: ACM SIGGRAPH 2013 Posters (SIGGRAPH '13)
By Björn Stenger, Robert Anderson, Roberto Cipolla, Vincent Wan
Issue Date:July 2013
pp. 1-1
Creating a realistic talking head, which given an arbitrary text as input generates a realistic looking face speaking the text, has been a long standing research challenge. Talking heads which cannot express emotion have been made to look very realistic by...
     
SplineGrip: an eight degrees-of-freedom flexible haptic sculpting tool
Found in: ACM SIGGRAPH 2013 Posters (SIGGRAPH '13)
By Björn Aneer, Fredrik Nysjö, Ingrid B. Carlbom, Pontus Olsson, Stefan Seipel
Issue Date:July 2013
pp. 1-1
Haptic sculpting allows a designer to create virtual models with the aid of haptic feedback. Just as in real life sculpting, different tools are used to work the model into a desired shape. Several haptic sculpting tools appear in the literature. For examp...
     
Linux block IO: introducing multi-queue SSD access on multi-core systems
Found in: Proceedings of the 6th International Systems and Storage Conference (SYSTOR '13)
By David Nellans, Jens Axboe, Matias Bjørling, Philippe Bonnet
Issue Date:June 2013
pp. 1-10
The IO performance of storage devices has accelerated from hundreds of IOPS five years ago, to hundreds of thousands of IOPS today, and tens of millions of IOPS projected in five years. This sharp evolution is primarily due to the introduction of NAND-flas...
     
IT consumerization under more difficult conditions: insights from German local governments
Found in: Proceedings of the 14th Annual International Conference on Digital Government Research (dg.o '13)
By Björn Niehaves, Kevin Ortbach, Sebastian Köffer
Issue Date:June 2013
pp. 205-213
Public sector organizations work under more difficult conditions, when intending to embrace IT consumerization, defined as the diffusion of consumer IT in the workplace. There is an observable lack in current literature with respect to particular factors t...
     
Early partial evaluation in a JIT-compiled, retargetable instruction set simulator generated from a high-level architecture description
Found in: Proceedings of the 50th Annual Design Automation Conference (DAC '13)
By Björn Franke, Harry Wagstaff
Issue Date:May 2013
pp. 1-6
Modern processor design tools integrate in their workflows generators for instruction set simulators (Iss) from architecture descriptions. Whilst these generated simulators are useful for design evaluation and software development, they suffer from poor pe...
     
FAB at CHI: digital fabrication tools, design, and community
Found in: CHI '13 Extended Abstracts on Human Factors in Computing Systems (CHI EA '13)
By Björn Hartmann, David Mellis, Leah Buechley, Mark D. Gross, Sean Follmer
Issue Date:April 2013
pp. 3307-3310
This workshop explores the implications and opportunities of digital fabrication for the field of human-computer interaction. We highlight five themes: design tools and interfaces, online collaboration around physical objects, prototyping in the interactio...
     
Designing gamification: creating gameful and playful experiences
Found in: CHI '13 Extended Abstracts on Human Factors in Computing Systems (CHI EA '13)
By Dan Dixon, Elizabeth Lawley, Lennart E. Nacke, Sebastian Deterding, Staffan L. Björk
Issue Date:April 2013
pp. 3263-3266
In recent years, gamification - the use of game design elements in non-game contexts - has seen rapid adoption in the software industry, as well as a growing body of research on its uses and effects. However, little is known about the effective design of s...
     
Body-tracking camera control for demonstration videos
Found in: CHI '13 Extended Abstracts on Human Factors in Computing Systems (CHI EA '13)
By Björn Hartmann, Derrick Cheng, Paul Wright, Pei-Yu Chi, Taeil Kwak
Issue Date:April 2013
pp. 1185-1190
A large community of users creates and shares how-to videos online. Many of these videos show demonstrations of physical tasks, such as fixing a machine, assembling furniture, or demonstrating dance steps. It is often difficult for the authors of these vid...
     
Eliminating the XML overhead in embedded XML languages
Found in: Proceedings of the 28th Annual ACM Symposium on Applied Computing (SAC '13)
By Björn Schütt, Stefan Werner, Sven Groppe
Issue Date:March 2013
pp. 542-547
XML is used to store and exchange data not only in the web and has advantages like self-describing content. Sensor nodes have limited hardware resources such that processing verbose data formats like XML is hard or even impossible if no intelligent techniq...
     
Prototyping natural interactions in virtual studio environments by demonstration: combining spatial mapping with gesture following
Found in: Proceedings of the Virtual Reality International Conference: Laval Virtual (VRIC '13)
By Björn Wöldecke, Chris Geiger, Dionysios Marinos
Issue Date:March 2013
pp. 1-8
A virtual studio enables the real-time combination of people or other real objects with computer generated environments. In this paper, a rapid prototyping strategy for natural real-time interactions in such virtual environments is introduced. Its name is ...
     
Limits of region-based dynamic binary parallelization
Found in: Proceedings of the 9th ACM SIGPLAN/SIGOPS international conference on Virtual execution environments (VEE '13)
By Björn Franke, Tobias J.K. Edler von Koch
Issue Date:March 2013
pp. 13-22
Efficiently executing sequential legacy binaries on chip multi-processors (CMPs) composed of many, small cores is one of today's most pressing problems. Single-threaded execution is a suboptimal option due to CMPs' lower single-core performance, while mult...
     
On optimum left-to-right strategies for active context-free games
Found in: Proceedings of the 16th International Conference on Database Theory (ICDT '13)
By Henrik Björklund, Joscha Kulbatzki, Martin Schuster, Thomas Schwentick
Issue Date:March 2013
pp. 105-116
Active context-free games are two-player games on strings over finite alphabets with one player trying to rewrite the input string to match a target specification. These games have been investigated in the context of exchanging Active XML (AXML) data. Whil...
     
A study of opinion mining and visualization of hotel reviews
Found in: Proceedings of the 14th International Conference on Information Integration and Web-based Applications & Services (IIWAS '12)
By Eivind Bjørkelund, Kjetil Nørvåg, Thomas H. Burnett
Issue Date:December 2012
pp. 229-238
Travel websites like TripAdvisor are nowadays important tools for travelers when deciding which hotels to stay in, and what restaurants and tourist attractions to visit. In this paper, we study opinion mining applied on data from travel review sites. We al...
     
Real-time scheduling with resource sharing on uniform multiprocessors
Found in: Proceedings of the 20th International Conference on Real-Time and Network Systems (RTNS '12)
By Björn Andersson, Gurulingesh Raravi, Vincent Nélis
Issue Date:November 2012
pp. 121-130
Consider the problem of scheduling a set of implicit-deadline sporadic tasks to meet all deadlines on a uniform multiprocessor platform where each task may access at most one of ρ shared resources and at most once by each job of that task. The resource...
     
Exploiting 5W annotations for opinion tracking
Found in: Proceedings of the fifth workshop on Exploiting semantic annotations in information retrieval (ESAIR '12)
By Amitava Das, Björn Gambäck
Issue Date:November 2012
pp. 3-4
A system performing sentiment analysis needs some prior knowledge which can be acquired, for example, by manual annotation only or by expanding a human-annotated sentiment lexicon by automatic means. However, users are seldom interested in all sentimental ...
     
Demo hour
Found in: interactions
By Björn Hartmann, Brian Gawalt, Hiromi Nakamura, Homei Miyashita, Kuang Chen, Kurtis Heimerl, Monika Hoinkis, Roger Ibars, Tapan Parikh
Issue Date:November 2012
pp. 6-7
Demo Hour highlights new prototypes and projects that exemplify innovation and novel forms of interaction.Leah Maestri, Editor
     
Preserving actual dynamic trend of emotion in dimensional speech emotion recognition
Found in: Proceedings of the 14th ACM international conference on Multimodal interaction (ICMI '12)
By Björn Schuller, Florian Eyben, Haifeng Li, Jiayin Sun, Lin Ma, Wenjing Han
Issue Date:October 2012
pp. 523-528
In this paper, we use the concept of dynamic trend of emotion to describe how a human's emotion changes over time, which is believed to be important for understanding one's stance toward current topic in interactions. However, the importance of this concep...
     
Improving generalisation and robustness of acoustic affect recognition
Found in: Proceedings of the 14th ACM international conference on Multimodal interaction (ICMI '12)
By Björn Schuller, Florian Eyben, Gerhard Rigoll
Issue Date:October 2012
pp. 517-522
Emotion recognition in real-life conditions faces several challenging factors, which most studies on emotion recognition do not consider. Such factors include background noise, varying recording levels, and acoustic properties of the environment, for examp...
     
AVEC 2012: the continuous audio/visual emotion challenge
Found in: Proceedings of the 14th ACM international conference on Multimodal interaction (ICMI '12)
By Björn Schuller, Florian Eyben, Maja Pantic, Michel Valster, Roddy Cowie
Issue Date:October 2012
pp. 449-456
We present the second Audio-Visual Emotion recognition Challenge and workshop (AVEC 2012), which aims to bring together researchers from the audio and video analysis communities around the topic of emotion recognition. The goal of the challenge is to recog...
     
AVEC 2012: the continuous audio/visual emotion challenge - an introduction
Found in: Proceedings of the 14th ACM international conference on Multimodal interaction (ICMI '12)
By Björn Schuller, Maja Pantic, Michel Valstar, Roddy Cowie
Issue Date:October 2012
pp. 361-362
The second international Audio/Visual Emotion Challenge and Workshop 2012 (AVEC 2012) is introduced shortly. 34 teams from 12 countries signed up for the Challenge. The SEMAINE database serves for prediction of four-dimensional continuous affect in audio a...
     
Protocols for resource constrained infrastructure networks
Found in: Proceedings of the 10th ACM international symposium on Mobility management and wireless access (MobiWac '12)
By Björn Greßmann, Helge Klimek, Volker Turau
Issue Date:October 2012
pp. 45-52
This paper introduces two protocols for communication in infrastructure networks consisting of a central server, stationary basestations and mobile devices. Mobile devices use IEEE 802.15.4 to communicate with the basestations. Among other things, the prop...
     
Midas: fabricating custom capacitive touch sensors to prototype interactive objects
Found in: Proceedings of the 25th annual ACM symposium on User interface software and technology (UIST '12)
By Björn Hartmann, Valkyrie Savage, Xiaohan Zhang
Issue Date:October 2012
pp. 579-588
An increasing number of consumer products include user interfaces that rely on touch input. While digital fabrication techniques such as 3D printing make it easier to prototype the shape of custom devices, adding interactivity to such prototypes remains a ...
     
Proton++: a customizable declarative multitouch framework
Found in: Proceedings of the 25th annual ACM symposium on User interface software and technology (UIST '12)
By Björn Hartmann, Kenrick Kin, Maneesh Agrawala, Tony DeRose
Issue Date:October 2012
pp. 477-486
Proton++ is a declarative multitouch framework that allows developers to describe multitouch gestures as regular expressions of touch event symbols. It builds on the Proton framework by allowing developers to incorporate custom touch attributes directly in...
     
MixT: automatic generation of step-by-step mixed media tutorials
Found in: Proceedings of the 25th annual ACM symposium on User interface software and technology (UIST '12)
By Amanda Ren, Björn Hartmann, Mira Dontcheva, Pei-Yu Chi, Sally Ahn, Wilmot Li
Issue Date:October 2012
pp. 93-102
Users of complex software applications often learn concepts and skills through step-by-step tutorials. Today, these tutorials are published in two dominant forms: static tutorials composed of images and text that are easy to scan, but cannot effectively de...
     
The Voice of Leadership: Models and Performances of Automatic Analysis in Online Speeches
Found in: IEEE Transactions on Affective Computing
By Felix Weninger,Jarek Krajewski,Anton Batliner,Björn Schuller
Issue Date:September 2012
pp. 496-508
We introduce the automatic determination of leadership emergence by acoustic and linguistic features in online speeches. Full realism is provided by the varying and challenging acoustic conditions of the presented YouTube corpus of online available speeche...
 
MobileWorks: Designing for Quality in a Managed Crowdsourcing Architecture
Found in: IEEE Internet Computing
By Anand Kulkarni,Philipp Gutheim,Prayag Narula,David Rolnitzky,Tapan Parikh,Björn Hartmann
Issue Date:September 2012
pp. 28-35
Online labor marketplaces offer the potential to automate tasks too difficult for computers, but don't always provide accurate results. MobileWorks is a crowd platform that departs from the marketplace model to provide robust, high-accuracy results using t...
 
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