SciDAC Visualization and Analytics Center for Enabling Technologies (2008)
Bethel, E. Wes, Johnson, Chris, Joy, Ken, Ahern, Sean, Pascucci, Valerio, Childs, Hank, ...
The Visualization and Analytics Center for Enabling Technologies (VACET) focuses on leveraging scientific visualization and analytics software technology as an enabling technology for increasing...
Bethel, E. Wes, Johnson, Chris, Aragon, Cecilia, Prabhat, ???, Rubel, Oliver, Weber, Gunther, ...
The focus of this article is on how one group of researchers the DOE SciDAC Visualization and Analytics Center for Enabling Technologies (VACET) is tackling the daunting task of enabling knowledge...
VACET: Proposed SciDAC2 Visualization and Analytics Center for Enabling Technologies (2008)
Bethel, W., Johnson, Chris, Hansen, Charles, Parker, Steve, Sanderson, Allen, Silva, Claudio, ...
This paper accompanies a poster that is being presented at the SciDAC 2006 meeting in Denver, CO. This project focuses on leveraging scientific visualization and analytics software technology as an...
The effects of anxiety upon attention allocation to affective stimuli (2007)
Waters, Allison Maree, Nitz, Ashley B., Craske, Michelle G., Johnson, Chris
Pictures of emotionally aversive, neutral, and pleasant scenes were presented for 500 ms, followed by a probe presented in the same location (valid trials) or an alternate location (invalid trials)...
Yes
The effects of anxiety upon attention allocation to affective stimuli (2007)
Waters, Allison Maree, Nitz, Ashley B., Craske, Michelle G., Johnson, Chris
Pictures of emotionally aversive, neutral, and pleasant scenes were presented for 500 ms, followed by a probe presented in the same location (valid trials) or an alternate location (invalid trials)...
SciDAC Visualization and Analytics Center for Enabling Technology (2006)
Bethel, E. Wes, Johnson, Chris, Joy, Ken, Ahern, Sean, Pascucci, Valerio, Childs, Hank, ...
The SciDAC2 Visualization and Analytics Center for Enabling Technologies (VACET) began operation on 10/1/2006. This document, dated 11/27/2006, is the first version of the VACET project management...
Pieroni, Andrea, Giusti, Maria, De Pasquale, Caterina, Lenzarini, Cinzia, Censorii, Eleonora, Gonzáles-Tejero, María, ...
Abstract During the years 2003–2005, a comparative ethnobotanical field survey was conducted on remedies used in traditional animal healthcare in eight Mediterranean areas. The study sites were...
Johnson, Chris, Vernes, Karl, Payne, Alison
We compared demography along gradients of population density in two medium-sized herbivorous marsupials, the common brushtail possum Trichosurus vulpecula and the rufous bettong Aepyprymnus...
Terminal reproductive investment in a marsupial (2005)
Life history theory predicts that as organisms approach the end of their lifespan they should increase their reproductive effort (RE). In mammals, reproduction involves large transfers of energy from...
Johnson, Chris, Vernes, Karl, Payne, Alison
We compared demography along gradients of population density in two medium-sized herbivorous marsupials, the common brushtail possum Trichosurus vulpecula and the rufous bettong Aepyprymnus...
Terminal reproductive investment in a marsupial (2005)
Life history theory predicts that as organisms approach the end of their lifespan they should increase their reproductive effort (RE). In mammals, reproduction involves large transfers of energy from...
Aglets: a good idea for Spidering ? (2004)
Nick Craswell, Jason Haines, Brendan Humphreys, Chris Johnson, Paul Thistlewaite
Introduction Many individuals and businesses now rely on the Web for promulgating and finding information, and in particular, rely on centralised search databases. The extent to which these databases...
Statistical Analysis For FEM (2004)
Leonid Zhukov, David Weinstein, Chris Johnson
Estimating the location and distribution of electric current sources within the brain from electroencephalographic (EEG) recordings is an ill-posed inverse problem. The ill-posed nature of the...
Volume Currents in Forward and Inverse Magnetoencephalographic (2004)
Robert Van Uitert, David Weinstein, Chris Johnson
Volume currents are important for the accurate calculation of magnetoencephalographic #MEG# forward or inverse simulations in realistic head models. We verify the accuracy of our finite element...
The Role of Night Vision Equipment in Military Incidents and Accidents (2004)
Night vision devices provide enormous benefits. They enable personnel to carry out operations under conditions that would not otherwise be possible. However, these benefits carry considerable risks....
Powerpoint to the People": Suiting the Word to the Audience (2004)
Ren Hexel, Chris Johnson, Bob Kummerfeld, Aaron Quigley
A computerised system supporting public presentations that are "personalised" at two levels is now possible. Firstly, the system exploits context information to adapt the large-screen projected...
"Powerpoint to the People": Suiting the Word to the Audience (2004)
Hexel, Rene, Johnson, Chris, Kummerfeld, Bob, Quigley, Aaron, Andy Cockburn
Yes
"Powerpoint to the People": Suiting the Word to the Audience (2004)
Hexel, Rene, Johnson, Chris, Kummerfeld, Bob, Quigley, Aaron
Yes
"Powerpoint to the People": Suiting the Word to the Audience (2004)
Hexel, Rene, Johnson, Chris, Kummerfeld, Bob, Quigley, Aaron
Lead Field Basis for FEM (2003)
David Weinstein, Leonid Zhukov, Chris Johnson
In recent years, significant progress has been made in the area of EEG/MEG source imaging. Source imaging on simple spherical models has become increasingly e#cient, with consistently reported...
Lead Field Basis for FEM (2003)
David Weinstein, Leonid Zhukov, Chris Johnson
In recent years, significant progress has been made in the area of EEG/MEG source imaging. Source imaging on simple spherical models has become increasingly e#cient, with consistently reported...
Independent Component Analysis For EEG Source (2003)
Leonid Zhukov, David Weinstein, Chris Johnson
A pervasive problem in neuroscience is determining which regions of the brain are active, given voltage measurements at the scalp. If accurate solutions to such problems could be obtained,...
The Team-Based Operation of Safety-Critical (2003)
This paper analyzes a range of incidents involving team-based interaction with safety-critical programmable systems. The incidents were submitted to NASA's Aviation Safety Reporting System (ASRS) and...
Using IEC 61508 to Guide the Investigation of Computer-Related Incidents and Accidents (2003)
Relatively few investigation techniques have been specifically developed to identify the causal factors that contribute to mishaps involving safety-critical computer systems. This is a significant...
Merino: An Intelligent Environment Architecture for Scalable Context Processing (2003)
Hexel, Rene, Johnson, Chris, Kay, Judy, Kummerfeld, Bob, Quigley, Aaron, Darrell Williamson, ...
No
Merino: An Intelligent Environment Architecture for Scalable Context Processing (2003)
Hexel, Rene, Johnson, Chris, Kay, Judy, Kummerfeld, Bob, Quigley, Aaron
No
Merino: An Intelligent Environment Architecture for Scalable Context Processing (2003)
Hexel, Rene, Johnson, Chris, Kay, Judy, Kummerfeld, Bob, Quigley, Aaron
Volume Currents in Forward and Inverse MEG Simulations using Realistic (2002)
Robert Van Uitert, David Weinstein, Chris Johnson
Many magnetoencephalography (MEG) forward and inverse simulation models employ spheres, a singular shape which does not require consideration of volume currents. With more realistic, inhomogeneous,...
Norquist,Donald C., Johnson,Chris
Using data sets of observations of atmospheric variables on a global scale, the spectral distribution of atmospheric moisture is compared with that of wind and mass fields. Results show that,...
Computational Field Visualization (2001)
Chris Johnson, Dean Brederson, Chuck Hansen, Milan Ikits, Gordon Kindlmann, Yarden Livnat, ...
Introduction Today, scientists, engineers, and medical researchers routinely use computers to simulate complex physical phenomena. Such simulations present new challenges for computational...
A Framework For Computational Anatomy (2001)
Chris Johnson, Paul M. Thompson, Arthur W. Toga
The rapid collection of brain images from healthy and diseased subjects has stimulated the development of powerful mathematical algorithms to compare, pool and average brain data across whole...
Spatio-temporal Multi-dipole Source Localization Using ICA and Lead-Fields in FEM Head Models (2001)
Leonid Zhukov, David Weinstein, Chris Johnson, Rob Macleod
| In this paper we introduce a framework for the solution of the multi-dipole, time-dependent, source localization problem in realistic head models. Our technique combines a PCA/ICA signal...
The Uintah Parallelism Infrastructure: A Performance Evaluation on the SGI Origin 2000 (2001)
John Mccorquodale, J. Davison, St. Germain, Steven G. Parker, Chris Johnson
Uintah is a component-based visual problem solving environment (PSE) designed to specifically address the unique problems inherent in running massively parallel scientific computations on terascale...
Aglets: a good idea for Spidering ? (2001)
Nick Craswell, Jason Haines, Brendan Humphreys, Chris Johnson, Paul Thistlewaite
Introduction Many individuals and businesses now rely on the Web for promulgating and finding information, and in particular, rely on centralised search databases. The extent to which these databases...
Signals Passed at Danger: A Case Study in the Application of Visualisation Techniques (2001)
Fraser Speirs, Chris Johnson, G Qq
This paper presents the reporting of Signals Passed at Danger (SPAD) - the term used to describe an incident when a train passes a signal displaying a danger aspect without authorisation. This...
Lead-field Bases for Electroencephalography Source Imaging (2001)
David Weinstein, Leonid Zhukov, Chris Johnson
In recent years, signicant progress has been made in the area of electroencephalography (EEG) source imaging. Source localization on simple spherical models has become increasingly ecient, with...
Lead- eld Bases for Electroencephalography Source Imaging (2001)
David Weinstein, Leonid Zhukov, Chris Johnson
In recent years, signicant progress has been made in the area of electroencephalography (EEG) source imaging. Source localization on simple spherical models has become increasingly ecient, with...
The Local Resource Competition (LRC) hypothesis predicts that where philopatric offspring compete for resources with their mothers, offspring sex ratios will be biased in favour of the dispersing...
The Local Resource Competition (LRC) hypothesis predicts that where philopatric offspring compete for resources with their mothers, offspring sex ratios will be biased in favour of the dispersing...
Performance Impact Of The Elimination Of Direct Labor Variance Reporting: A Field Study 1. (2000)
Rajiv D. Banker, Sarvanan Devaraj, Roger G. Schroeder, Kingshuk K. Sinha, Chris Johnson, Debbie Larson, ...
this paper is to empirically test these theoretical predictions about the performance impact of eliminating direct labor variance reporting. We analyze performance data from 7 plants ("experimental...
A Spatio-Temporal Object Model and Query Language (2000)
Bo Huang, Michael F. Worboys, Chris Johnson, John Stell, Keith Mason
this paper concerns the spatio-temporal data model and an associated query language.
Physically-Based B-Spline Surface Sculpting (2000)
Colette J. Mullenhoff, Chris Johnson, Peter Shirley
Conventional B-spline modeling software offers the designer shape interaction and manipulation through editing the associated control points, orders, and knot vector parameters. Such modeling is...
Independent Component Analysis For EEG Source Localization In Realistic Head Models (1999)
Leonid Zhukov, David Weinstein, Chris Johnson
A pervasive problem in neuroscience is determining which regions of the brain are active, given voltage measurements at the scalp. If accurate solutions to such problems could be obtained,...
Independent Component Analysis For EEG Source Localization In Realistic Head Models (1999)
Leonid Zhukov, David Weinstein, Chris Johnson
A pervasive problem in neuroscience is determining which regions of the brain are active, given voltage measurements at the scalp. If accurate solutions to such problems could be obtained,...
Aglets: a good idea for Spidering? (1999)
Nick Craswell, Jason Haines, Brendan Humphreys, Chris Johnson, Paul Thistlewaite
Introduction Many individuals and businesses now rely on the Web for promulgating and finding information, and in particular, rely on centralised search databases. The extent to which these databases...
Keele, England, July 20--29, 1993 (1999)
Richard Bornat, The Dov Gabbay, Wilfrid Hodges, Martin Hyl, Thomas Jech, David Makinson, ...
Natural Deduction the well-known connections between Proof Theory and Category Theory. More precisely, we shall show how to systematically associate to any operator #, whose introduction and...
Richardson, Jim, Miller, Chris, Johnson, Chris, Shackleton, John, Funk, Harry
We address the problem of allocating scarce communications resources in a military wide area network so that the information flows best support mission objectives. IPSO FACTO enables commanders to...
Pre-fetching tree-structured data in distributed memory (1998)
A distributed heap storage manager has been implemented on the Fujitsu AP1000 multicomputer. The performance of various pre-fetching strategies is experimentally compared. Subjective programming...
An Efficient Implementation of the Message Passing Interface (MPI) on the Fujitsu AP1000 (1997)
David Sitsky, David Walsh, Chris Johnson
The message passing interface standard released in April 1994 by the MPI Forum [2], defines a set of message passing primitives for multicomputers and clustered systems. The standard provides a large...
David Sitsky, David Walsh, Chris Johnson
MPI is the new standard which defines a set of message passing operations for multicomputers and clustered systems. In comparison to other popular message passing systems, MPI provides a richer...
Stephen Fenwick, Chris Johnson
Using a persistent multicomputer object store should greatly simplify the writing of distributed memory parallel programs operating on irregular, object-structured data, by removing from the...
Fenwick, Stephen, Johnson, Chris
Using a persistent multicomputer object store should greatly simplify the writing of distributed memory parallel programs operating on irregular, object-structured data, by removing from the...
Fenwick, Stephen, Johnson, Chris
Using a persistent multicomputer object store should greatly simplify the writing of distributed memory parallel programs operating on irregular, object-structured data, by removing from the...
Fenwick, Stephen, Johnson, Chris
Using a persistent multicomputer object store should greatly simplify the writing of distributed memory parallel programs operating on irregular, object-structured data, by removing from the...
Fenwick, Stephen, Johnson, Chris
Using a persistent multicomputer object store should greatly simplify the writing of distributed memory parallel programs operating on irregular, object-structured data, by removing from the...
Pre-Fetching Tree-Structured Data in Distributed Memory (1996)
A distributed heap storage manager has been implemented on the Fujitsu AP1000 multicomputer. The performance of various pre-fetching strategies is experimentally compared. Subjective programming...
Pre-Fetching Tree-Structured Data in Distributed Memory (1996)
A distributed heap storage manager has been implemented on the Fujitsu AP1000 multicomputer. The performance of various pre-fetching strategies is experimentally compared. Subjective programming...
An Efficient Implementation of the Message Passing Interface (MPI) on the Fujitsu AP1000 (1994)
David Sitsky, David Walsh, Chris Johnson
The message passing interface standard released in April 1994 by the MPI Forum [2], defines a set of message passing primitives for multicomputers and clustered systems. The standard provides a large...
David Sitsky, David Walsh, Chris Johnson
MPI is the new standard which defines a set of message passing operations for multicomputers and clustered systems. In comparison to other popular message passing systems, MPI provides a richer...
The Formal Analysis Of Human-Computer Interaction During Accident Investigations (1994)
This paper presents ways in which formal methods can be exploited to address these problems. Mathematical notations provide means of representing and reasoning about the circumstances that lead to...
The role of literate computing in undergraduate curricula (1994)
Bossomaier, Terry, Johnson, Chris
Teaching medium scale program design to second-year computer science students is highly desirable, but difficult to incorporate within an already fully-loaded course structure. An intermediate...
The role of literate computing in undergraduate curricula (1994)
Bossomaier, Terry, Johnson, Chris
Teaching medium scale program design to second-year computer science students is highly desirable, but difficult to incorporate within an already fully-loaded course structure. An intermediate...
The role of literate computing in undergraduate curricula (1994)
Bossomaier, Terry, Johnson, Chris
Teaching medium scale program design to second-year computer science students is highly desirable, but difficult to incorporate within an already fully-loaded course structure. An intermediate...
The role of literate computing in undergraduate curricula (1994)
Bossomaier, Terry, Johnson, Chris
Teaching medium scale program design to second-year computer science students is highly desirable, but difficult to incorporate within an already fully-loaded course structure. An intermediate...
Appropriate use of computing technology (1992)
1. As the computing boom gets quieter... 2. What benefit is a publicly open system? 3. What harm is in computerised systems? 4. So - what is appropriate in computing? Appropriate computing or...
Appropriate use of computing technology (1992)
1. As the computing boom gets quieter...2. What benefit is a publicly open system?3. What harm is in computerised systems?4. So - what is appropriate in computing?Appropriate computing or computing...
Appropriate use of computing technology (1992)
1. As the computing boom gets quieter... 2. What benefit is a publicly open system? 3. What harm is in computerised systems? 4. So - what is appropriate in computing? Appropriate computing or...
Appropriate use of computing technology (1992)
1. As the computing boom gets quieter... 2. What benefit is a publicly open system? 3. What harm is in computerised systems? 4. So - what is appropriate in computing? Appropriate computing or...
Appropriate use of computing technology (1992)
1. As the computing boom gets quieter... 2. What benefit is a publicly open system? 3. What harm is in computerised systems? 4. So - what is appropriate in computing? Appropriate computing or...
A proto-industrial community study :-- Coggeshall in Essex c1500-c1750 /--Chris Johnson. (1989)
Thesis [Ph. D.]--University of Essex, 1990.
Lead Field Basis for FEM Source Localization (1970)
David Weinstein, Leonid Zhukov, Chris Johnson
In recent years, significant progress has been made in the area of EEG/MEG source imaging. Source imaging on simple spherical models has become increasingly e#cient, with consistently reported...
Pieroni, Andrea, Giusti, Maria Elena, De Pasquale, Caterina, Lenzarini, Cinzia, Censorii, Eleonora, Gonzáles-Tejero, María Reyes, ...
During the years 2003–2005, a comparative ethnobotanical field survey was conducted on remedies used in traditional animal healthcare in eight Mediterranean areas. The study sites were selected...
Pieroni, Andrea, Giusti, Maria Elena, De Pasquale, Caterina, Lenzarini, Cinzia, Censorii, Eleonora, Gonzáles-Tejero, María Reyes, ...
During the years 2003–2005, a comparative ethnobotanical field survey was conducted on remedies used in traditional animal healthcare in eight Mediterranean areas. The study sites were selected...
Time to stop sniffing the air: snapshot survey
Johnson, Chris, Goodman, Neville W
Objective To determine whether the phrase “sniffing the morning air” is useful in positioning patients for tracheal intubation.