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Displaying 1-22 out of 22 total
Improved Grid Security Posture through Multi-factor Authentication
Found in: Grid Computing, IEEE/ACM International Workshop on
By Victor Hazlewood,Patricia Kovatch,Matthew Ezell,Matthew Johnson,Patti Redd
Issue Date:September 2011
pp. 106-113
While methods of securing communication over the Internet have changed from clear text to secure encrypted channels over the last decade, the basic username-password combination for authentication has remained the mainstay in academic research computing an...
 
Trust in Automation
Found in: IEEE Intelligent Systems
By Robert R. Hoffman,Matthew Johnson,Jeffrey M. Bradshaw,Al Underbrink
Issue Date:January 2013
pp. 84-88
This essay focuses on trust in the automation within macrocognitive work systems. The authors emphasize the dynamics of trust. They consider numerous different meanings or kinds of trust, and different modes of operation in which trust dynamics play a role...
 
Explanation and Coordination in Human-Agent Teams: A Study in the BW4T Testbed
Found in: Web Intelligence and Intelligent Agent Technology, IEEE/WIC/ACM International Conference on
By Maaike Harbers,Jeffrey M. Bradshaw,Matthew Johnson,Paul Feltovich,Karel van den Bosch,John-Jules Meyer
Issue Date:August 2011
pp. 17-20
There are several applications in which humans and agents jointly perform a task. If the task involves interdependence among the team members, coordination is required to achieve good team performance. Coordination in human-agent teams can be improved by g...
 
Beyond Cooperative Robotics: The Central Role of Interdependence in Coactive Design
Found in: IEEE Intelligent Systems
By Matthew Johnson, Jeffrey M. Bradshaw, Paul J. Feltovich, Robert R. Hoffman, Catholijn Jonker, Birna van Riemsdijk, Maarten Sierhuis
Issue Date:May 2011
pp. 81-88
<p>As automation becomes more sophisticated, the nature of its interaction with people will need to change in profound ways. Many approaches to designing more team-like cooperation between humans and machines have been proposed&#x2014;most recent...
 
Semantic texton forests for image categorization and segmentation
Found in: Computer Vision and Pattern Recognition, IEEE Computer Society Conference on
By Jamie Shotton, Matthew Johnson, Roberto Cipolla
Issue Date:June 2008
pp. 1-8
We propose semantic texton forests, efficient and powerful new low-level features. These are ensembles of decision trees that act directly on image pixels, and therefore do not need the expensive computation of filter-bank responses or local descriptors. T...
 
Policy Management across Multiple Platforms and Application Domains
Found in: Policies for Distributed Systems and Networks, IEEE International Workshop on
By Matthew Johnson, Jeffrey M. Bradshaw, Hyuckchul Jung, Niranjan Suri, Marco Carvalho
Issue Date:June 2008
pp. 199-202
One of the challenges of building a policy management framework is making it flexible enough to handle differences in both policy semantics and enforcement strategies across multiple platforms and application domains. The system must be expressive enough i...
 
Demonstrating Human-Robot Coordination through Dynamic Regulation
Found in: Policies for Distributed Systems and Networks, IEEE International Workshop on
By Matthew Johnson, Paul J. Feltovich, Jeffrey M. Bradshaw, Larry Bunch
Issue Date:June 2008
pp. 231-232
Several key aspects of coordination such as teamwork, roles, and communication, are enabled and driven by, and even largely defined by, various systems of regulation. One key feature of all these elements in human coordination is their dynamic nature. We h...
 
New Developments in Ontology-Based Policy Management: Increasing the Practicality and Comprehensiveness of KAoS
Found in: Policies for Distributed Systems and Networks, IEEE International Workshop on
By Andrzej Uszok, Jeffrey M. Bradshaw, James Lott, Maggie Breedy, Larry Bunch, Paul Feltovich, Matthew Johnson, Hyuckchul Jung
Issue Date:June 2008
pp. 145-152
The KAoS policy management framework pioneered the use of semantically-rich ontological representation and reasoning to specify, analyze, deconflict, and enforce policies. The framework has continued to evolve over the last five years, inspired by both tec...
 
DNA Deformation Energy as an Indirect Recognition Mechanism in Protein-DNA Interactions
Found in: IEEE/ACM Transactions on Computational Biology and Bioinformatics
By Kimberly A. Aeling, Nicholas R. Steffen, Matthew Johnson, G. Wesley Hatfield, Richard H. Lathrop, Donald F. Senear
Issue Date:January 2007
pp. 117-125
Proteins that bind to specific locations in genomic DNA control many basic cellular functions. Proteins detect their binding sites using both direct and indirect recognition mechanisms. Deformation energy, which models the energy required to bend DNA from ...
 
KAoS Policy Management for Semantic Web Services
Found in: IEEE Intelligent Systems
By Andrzej Uszok, Jeffrey M. Bradshaw, Matthew Johnson, Renia Jeffers, Austin Tate, Jeff Dalton, Stuart Aitken
Issue Date:July 2004
pp. 32-41
KAoS policy and domain services help with policy specification, analysis, disclosure, and enforcement of policies for Semantic Web Services. The authors describe these capabilities in the context of three example applications: Grid Policy Management, Coali...
 
A Fixed-Point DSP for Graphics Engines
Found in: IEEE Micro
By Matthew Johnson
Issue Date:July 1989
pp. 63-77
<p>The use of the 16-bit ADSP-2100 digital signal microprocessor as a fixed-point, low-end graphics engine for applications such as video games and small computer graphics packages is examined. It serves as the basis for a complete, hardware-oriented...
 
PAPI-V: Performance Monitoring for Virtual Machines
Found in: 2012 41st International Conference on Parallel Processing Workshops (ICPPW)
By Matthew Johnson,Heike McCraw,Shirley Moore,Phil Mucci,John Nelson,Dan Terpstra,Vince Weaver,Tushar Mohan
Issue Date:September 2012
pp. 194-199
This paper describes extensions to the PAPI hardware counter library for virtual environments, called PAPI-V. The extensions support timing routines, I/O measurements, and processor counters. The PAPI-V extensions will allow application and tool developers...
 
An eye-tracking study of notational, informational, and emotional aspects of learning analytics representations
Found in: Proceedings of the Third International Conference on Learning Analytics and Knowledge (LAK '13)
By Matthew Johnson, Ravi Vatrapu
Issue Date:April 2013
pp. 125-134
This paper presents an eye-tracking study of notational, informational, and emotional aspects of nine different notational systems (Skill Meters, Smilies, Traffic Lights, Topic Boxes, Collective Histograms, Word Clouds, Textual Descriptors, Table, and Matr...
     
Using sequential pattern mining to increase graph comprehension in intelligent tutoring system student data (abstract only)
Found in: Proceeding of the 44th ACM technical symposium on Computer science education (SIGCSE '13)
By Aaron Springer, Matthew Johnson, Michael Eagle, Tiffany Barnes
Issue Date:March 2013
pp. 732-732
Examining student interactions in multi-step problems from Intelligent Tutoring Systems currently involves examining thousands of interactions from hundreds of students. We designed and implemented a sequential pattern mining algorithm and a sequence ratin...
     
Toward coactivity
Found in: Proceeding of the 5th ACM/IEEE international conference on Human-robot interaction (HRI '10)
By Birna van Riemsdijk, Catholijn Jonker, Jeffrey M. Bradshaw, Maarten Sierhuis, Matthew Johnson, Paul J. Feltovich
Issue Date:March 2010
pp. 101-102
This paper introduces the concept of Coactivity as a new focal point for Human-Robot Interaction to address the more sophisticated roles of partner or teammate envisioned for future human-robot systems. We propose that most approaches to date have focused ...
     
Photorealistic real-time rendering of spherical raindrops with hierarchical reflective and refractive maps
Found in: Proceedings of the 2010 ACM SIGGRAPH symposium on Interactive 3D Graphics and Games (I3D '10)
By Kazufumi Kaneda, Marcos Slomp, Matthew Johnson, Toru Tamaki
Issue Date:February 2010
pp. 1-1
Irradiance normal mapping is a method to combine two popular techniques, light mapping and normal mapping, and is used in games such as Half-Life 2 or Halo 3. This combination allows using low-resolution light caching on surfaces with only a few coefficien...
     
A platform-based design environment for synthetic biological systems
Found in: The Fifth Richard Tapia Celebration of Diversity in Computing Conference: Intellect, Initiatives, Insight, and Innovations (TAPIA '09)
By Anne Van Devender, Douglas Densmore, Matthew Johnson, Nade Sritanyaratana
Issue Date:April 2009
pp. 1-29
Genomics has reached the stage at which the amount of DNA sequence information in existing databases is quite large. Synthetic biology is now using these databases to catalog sequences according to their functionality thus creating a system of standard bio...
     
DNA Deformation Energy as an Indirect Recognition Mechanism in Protein-DNA Interactions
Found in: IEEE/ACM Transactions on Computational Biology and Bioinformatics (TCBB)
By Donald F. Senear, G. Wesley Hatfield, Kimberly A. Aeling, Matthew Johnson, Nicholas R. Steffen, Richard H. Lathrop
Issue Date:January 2007
pp. 117-125
Proteins that bind to specific locations in genomic DNA control many basic cellular functions. Proteins detect their binding sites using both direct and indirect recognition mechanisms. Deformation energy, which models the energy required to bend DNA from ...
     
An evolutionary approach to camera-based projector calibration
Found in: Proceedings of the 8th annual conference on Genetic and evolutionary computation (GECCO '06)
By Anu Bhat, Clayton Matthew Johnson, William C. Thibault
Issue Date:July 2006
pp. 1871-1872
In this paper, we describe a GA to solve for the orientation and lens characteristics of a projector, given images of a dome screen illuminated by the projector. We use synthetic images, making ground truth available. Our GA achieves rapid and accurate con...
     
A genetic algorithm with backtracking for protein structure prediction
Found in: Proceedings of the 8th annual conference on Genetic and evolutionary computation (GECCO '06)
By Anitha Katikireddy, Clayton Matthew Johnson
Issue Date:July 2006
pp. 299-300
In this paper, we propose a simple genetic algorithm for finding the optimal conformation of a protein using the three-dimensional square HP model. A backtracking procedure is used to resolve the positional collisions and illegal conformations that occur d...
     
Kaa: policy-based explorations of a richer model for adjustable autonomy
Found in: Proceedings of the fourth international joint conference on Autonomous agents and multiagent systems (AAMAS '05)
By Andrzej Uszok, Hyuckchul Jung, James Allen, Jeffrey M. Bradshaw, Larry Bunch, Lucian Galescu, Matthew Johnson, Nathanael Chambers, Niranjan Suri, Paul Feltovich, Renia Jeffers, Shri Kulkarni, William Taysom
Issue Date:July 2005
pp. 214-221
Though adjustable autonomy is hardly a new topic in agent systems, there has been a general lack of consensus on terminology and basic concepts. In this paper, we describe the multi-dimensional nature of adjustable autonomy and give examples of how various...
     
Constructive and virtual model linkage
Found in: Proceedings of the 27th conference on Winter simulation (WSC '95)
By David R. Pratt, Matthew A. Johnson
Issue Date:December 1995
pp. 1222-1228
This paper describes the CONVERSIM simulation language. CONVERSIM is a developmental general-purpose, discrete-event language which has been used in the classroom to introduce the use and operation of simulators prior to the introduction of languages such ...
     
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