Sample records for improvement network brain

  1. Functional Clustering Drives Encoding Improvement in a Developing Brain Network during Awake Visual Learning

    E-Print Network [OSTI]

    Dunfield, Derek

    Sensory experience drives dramatic structural and functional plasticity in developing neurons. However, for single-neuron plasticity to optimally improve whole-network encoding of sensory information, changes must be ...

  2. Aging and functional brain networks

    SciTech Connect (OSTI)

    Tomasi D.; Tomasi, D.; Volkow, N.D.

    2011-07-11T23:59:59.000Z

    Aging is associated with changes in human brain anatomy and function and cognitive decline. Recent studies suggest the aging decline of major functional connectivity hubs in the 'default-mode' network (DMN). Aging effects on other networks, however, are largely unknown. We hypothesized that aging would be associated with a decline of short- and long-range functional connectivity density (FCD) hubs in the DMN. To test this hypothesis, we evaluated resting-state data sets corresponding to 913 healthy subjects from a public magnetic resonance imaging database using functional connectivity density mapping (FCDM), a voxelwise and data-driven approach, together with parallel computing. Aging was associated with pronounced long-range FCD decreases in DMN and dorsal attention network (DAN) and with increases in somatosensory and subcortical networks. Aging effects in these networks were stronger for long-range than for short-range FCD and were also detected at the level of the main functional hubs. Females had higher short- and long-range FCD in DMN and lower FCD in the somatosensory network than males, but the gender by age interaction effects were not significant for any of the networks or hubs. These findings suggest that long-range connections may be more vulnerable to aging effects than short-range connections and that, in addition to the DMN, the DAN is also sensitive to aging effects, which could underlie the deterioration of attention processes that occurs with aging.

  3. STOCHASTIC GENERATION OF BIOLOGICALLY ACCURATE BRAIN NETWORKS

    E-Print Network [OSTI]

    STOCHASTIC GENERATION OF BIOLOGICALLY ACCURATE BRAIN NETWORKS A Thesis by ARAVIND ALURI Submitted OF BIOLOGICALLY ACCURATE BRAIN NETWORKS A Thesis by ARAVIND ALURI Submitted to the Office of Graduate Studies Head of Department, Valerie Taylor December 2005 Major Subject: Computer Science #12;iii ABSTRACT

  4. Network induces burst synchronisation in cat brain

    E-Print Network [OSTI]

    Ewandson L. Lameu; Fernando S. Borges; Rafael R. Borges; Antonio M. Batista; Murilo S. Baptista; Ricardo L. Viana

    2015-03-07T23:59:59.000Z

    The brain of mammals are divided into different cortical areas that are anatomically connected forming larger networks which perform cognitive tasks. The cat cerebral cortex is composed of 65 areas organised into the visual, auditory, somatosensory-motor and frontolimbic cognitive regions. We have built a network of networks, in which networks are connected among themselves according to the connections observed in the cat cortical areas aiming to study how inputs drive the synchronous behaviour in this cat brain-like network. We show that without external perturbations it is possible to observe high level of bursting synchronisation between neurons within almost all areas, except for the auditory area. Bursting synchronisation appears between neurons in the auditory region when an external perturbation is applied in another cognitive area. This is a clear evidence that pattern formation and collective behaviour in the brain might be a process mediated by other brain areas under stimulation.

  5. Neuronal and network computation in the brain

    SciTech Connect (OSTI)

    Babloyantz, A. [Center for Study of Non-linear Systems, Universite Libre de Bruxelles, CP 231, Boulevard du Triomphe, 1050 Brussels (Belgium); International Solvay Institutes for Physics and Chemistry, ULB-Campus Plaine-CP 231, Boulevard du Triomphe, 1050 Brussels (Belgium)

    1999-03-22T23:59:59.000Z

    The concepts and methods of non-linear dynamics have been a powerful tool for studying some gamow aspects of brain dynamics. In this paper we show how, from time series analysis of electroencepholograms in sick and healthy subjects, chaotic nature of brain activity could be unveiled. This finding gave rise to the concept of spatiotemporal cortical chaotic networks which in turn was the foundation for a simple brain-like device which is able to become attentive, perform pattern recognition and motion detection. A new method of time series analysis is also proposed which demonstrates for the first time the existence of neuronal code in interspike intervals of coclear cells.

  6. Scale-Free Brain Functional Networks Victor M. Eguiluz,1

    E-Print Network [OSTI]

    Oro, Daniel

    Scale-Free Brain Functional Networks Victor M. Egui´luz,1 Dante R. Chialvo,2 Guillermo A. Cecchi,3 is used to extract functional networks connecting correlated human brain sites. Analysis of the resulting-world networks, reflect important functional information about brain states. DOI: 10.1103/PhysRevLett.94

  7. Computational Neuropsychiatry - Schizophrenia as a Cognitive Brain Network Disorder

    E-Print Network [OSTI]

    Dauvermann, Maria R.

    Computational modeling of functional brain networks in fMRI data has advanced the understanding of higher cognitive function. It is hypothesized that functional networks mediating higher cognitive processes are disrupted ...

  8. Construction of Anatomically Correct Models of Mouse Brain Networks 1

    E-Print Network [OSTI]

    Keyser, John

    Construction of Anatomically Correct Models of Mouse Brain Networks 1 B. H. McCormick a, W. Koh a Y and Public Health, Texas A&M University, 4458 TAMU, College Station, TX 77843-4458 Abstract The Mouse Brain Web, a federated database, provides for the construction of anatomically correct models of mouse brain

  9. Abstract--Recent brain imaging studies on primates revealed that a network of brain areas is activated both during

    E-Print Network [OSTI]

    Trahanias, Panos

    9 Abstract-- Recent brain imaging studies on primates revealed that a network of brain areas and constitutes an efficient behavior of mammals. Recent brain imaging studies investigate where and how observed to this direction [23]. Additional studies [10],[16] indicate the existence of a much wider network of brain areas

  10. Complex Networks - A Key to Understanding Brain Function

    ScienceCinema (OSTI)

    Olaf Sporns

    2010-01-08T23:59:59.000Z

    The brain is a complex network of neurons, engaging in spontaneous and evoked activity that is thought to be the main substrate of mental life.  How this complex system works together to process information and generate coherent cognitive states, even consciousness, is not yet well understood.  In my talk I will review recent studies that have revealed characteristic structural and functional attributes of brain networks, and discuss efforts to build computational models of the brain that are informed by our growing knowledge of brain anatomy and physiology.

  11. Complex Networks - A Key to Understanding Brain Function

    SciTech Connect (OSTI)

    Olaf Sporns

    2008-01-23T23:59:59.000Z

    The brain is a complex network of neurons, engaging in spontaneous and evoked activity that is thought to be the main substrate of mental life.  How this complex system works together to process information and generate coherent cognitive states, even consciousness, is not yet well understood.  In my talk I will review recent studies that have revealed characteristic structural and functional attributes of brain networks, and discuss efforts to build computational models of the brain that are informed by our growing knowledge of brain anatomy and physiology.

  12. ScaleScale--free Brain Functional Networksfree Brain Functional Networks victor@imedea.uib.es www.imedea.uib.es/~victor

    E-Print Network [OSTI]

    Oro, Daniel

    ScaleScale--free Brain Functional Networksfree Brain Functional Networks victor@imedea.uib.es wwwPlan Motivation: Networks & Brain How to get functional networks from fMRI Characterization of brain functional) Co-authorship of scientific papers #12;...... and the brainand the brain #12;""In catalogue" cortical

  13. Stochastic generation of biologically accurate brain networks

    E-Print Network [OSTI]

    Aluri, Aravind

    2006-04-12T23:59:59.000Z

    Gen . . . . . . . . . . . . . . . . . . . 31 2. Synapses in NeuroConstruct . . . . . . . . . . . . . . 32 D. Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 V LATTICE/GROUP : : : : : : : : : : : : : : : : : : : : : : : : : 35 A. Introduction... . . . . . . . . . . . . . . . . . . . . . . . . . . 35 B. Background . . . . . . . . . . . . . . . . . . . . . . . . . . 35 1. Lattice geometry . . . . . . . . . . . . . . . . . . . . . 35 2. Examples of lattice geometry . . . . . . . . . . . . . . 35 C. Lattice structures in the brain...

  14. Hubs of brain functional networks are radically reorganized in comatose patients

    E-Print Network [OSTI]

    Boyer, Edmond

    Hubs of brain functional networks are radically reorganized in comatose patients S. Achard , C Human brain networks have topological properties in common with many other complex systems, prompting the question: what aspects of brain network organization are critical for distinctive functional properties

  15. Robotic actions in the human brain Robotic movement preferentially engages the action observation network

    E-Print Network [OSTI]

    Hamilton, Antonia

    Robotic actions in the human brain 1 Robotic movement., Stadler, W. & Prinz, W. (in press / 2011). Robotic movement preferentially engages the action observation network. Human Brain Mapping. #12;Robotic

  16. Exploring the network dynamics underlying brain activity during rest Joana Cabral a,b,

    E-Print Network [OSTI]

    Deco, Gustavo

    Exploring the network dynamics underlying brain activity during rest§ Joana Cabral a,b, *, Morten L. Kringelbach b,c , Gustavo Deco a,d a Theoretical and Computational Neuroscience Group, Center of Brain Recerca i Estudis Avanc¸ats (ICREA), Barcelona, Spain Contents 1. Brain activity during rest

  17. Ultramicroscopy: three-dimensional visualization of neuronal networks in the whole mouse brain

    E-Print Network [OSTI]

    Cai, Long

    Ultramicroscopy: three-dimensional visualization of neuronal networks in the whole mouse brain Hans entire neuronal networks for analysis in the intact brain has been impossible up to now. Techniques like in micro computer tomogrpahy and mMRI does not resolve individual cells1,2. On a microscopic scale

  18. Dynamic reconfiguration of human brain networks during learning

    E-Print Network [OSTI]

    Danielle S. Bassett; Nicholas F. Wymbs; Mason A. Porter; Peter J. Mucha; Jean M. Carlson; Scott T. Grafton

    2011-10-24T23:59:59.000Z

    Human learning is a complex phenomenon requiring flexibility to adapt existing brain function and precision in selecting new neurophysiological activities to drive desired behavior. These two attributes -- flexibility and selection -- must operate over multiple temporal scales as performance of a skill changes from being slow and challenging to being fast and automatic. Such selective adaptability is naturally provided by modular structure, which plays a critical role in evolution, development, and optimal network function. Using functional connectivity measurements of brain activity acquired from initial training through mastery of a simple motor skill, we explore the role of modularity in human learning by identifying dynamic changes of modular organization spanning multiple temporal scales. Our results indicate that flexibility, which we measure by the allegiance of nodes to modules, in one experimental session predicts the relative amount of learning in a future session. We also develop a general statistical framework for the identification of modular architectures in evolving systems, which is broadly applicable to disciplines where network adaptability is crucial to the understanding of system performance.

  19. Performance Improvements for Nuclear Reaction Network Integration

    E-Print Network [OSTI]

    Longland, Richard; José, Jordi

    2014-01-01T23:59:59.000Z

    Aims: The aim of this work is to compare the performance of three reaction network integration methods used in stellar nucleosynthesis calculations. These are the Gear's backward differentiation method, Wagoner's method (a 2nd-order Runge-Kutta method), and the Bader-Deuflehard semi-implicit multi-step method. Methods: To investigate the efficiency of each of the integration methods considered here, a test suite of temperature and density versus time profiles is used. This suite provides a range of situations ranging from constant temperature and density to the dramatically varying conditions present in white dwarf mergers, novae, and x-ray bursts. Some of these profiles are obtained separately from full hydrodynamic calculations. The integration efficiencies are investigated with respect to input parameters that constrain the desired accuracy and precision. Results: Gear's backward differentiation method is found to improve accuracy, performance, and stability in integrating nuclear reaction networks. For te...

  20. Abductive Network Committees for Improved Classification of Medical Data

    E-Print Network [OSTI]

    Abdel-Aal, Radwan E.

    Abductive Network Committees for Improved Classification of Medical Data R. E. Abdel-Aal Center;Summary Objectives: To introduce abductive network classifier committees as an ensemble method-organizing, automatic-stopping nature, and learning approach used by abductive networks are not very conducive

  1. Assessing dynamics, spatial scale, and uncertainty in task-related brain network analyses

    E-Print Network [OSTI]

    Stephen, Emily P.; Lepage, Kyle Q.; Eden, Uri T.; Brunner, Peter; Schalk, Gerwin; Brumberg, Jonathan S.; Guenther, Frank H.; Kramer, Mark A.

    2014-03-19T23:59:59.000Z

    The brain is a complex network of interconnected elements, whose interactions evolve dynamically in time to cooperatively perform specific functions. A common technique to probe these interactions involves multi-sensor ...

  2. An improved dosimetric model of the head and brain

    E-Print Network [OSTI]

    Bouchet, Lionel Gerard

    1995-01-01T23:59:59.000Z

    Br). Other radionuclides considered may deposit in bone withm the head region (cranium or the spinal skeleton) (is'I, 2P, ssP, tssRe, 'ssRe, 'ssSm, "7~Sb, ssSr, s Sr, "nY, ss~Tc, tsiCs, ss"Ra), or m the thyroid fss~ Tc, and all iodme radionuclides... tagged to them (i. e. , radiopharmaceuticals). Nevertheless, studies of the small-scale dosimetry of the bram, and more generally, the organs of the head (brain, eyes thyroid, skull, skin), have not kept pace with the current advances in nuclear...

  3. Semi-Automated Reconstruction of Vascular Networks in Knife-Edge Scanning Microscope Mouse Brain Data

    E-Print Network [OSTI]

    Dileepkumar, Ananth

    2014-08-14T23:59:59.000Z

    The KnifeEdge Scanning Microscope (KESM) enables imaging of an entire mouse brain at sub-micrometer resolution. The data from KESM can be used in the reconstruction of neuronal and vascular structures in the mouse brain. Tracing the vascular network...

  4. Improved techniques for passive optical networks

    E-Print Network [OSTI]

    Jorgesen, Douglas Ryan Tourtillott

    2010-01-01T23:59:59.000Z

    for WDM Access Networks with Downstream DPSK and UpstreamReturn to Zero (RZ) Coded Downstream and NRZ Upstream Re-Access Network Scheme with Downstream Manchester Coding and

  5. adult rodent brain: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    adult rodent brain First Page Previous Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 RODENT BRAIN NAVIGATOR :RODENT BRAIN...

  6. BRAIN TUMOR VASCULAR NETWORK SEGMENTATION FROM MICRO-TOMOGRAPHY Xavier Descombes1

    E-Print Network [OSTI]

    BRAIN TUMOR VASCULAR NETWORK SEGMENTATION FROM MICRO-TOMOGRAPHY Xavier Descombes1 , Franck for the systematic 3D analysis of supra- cellular structures such as micro-vascular networks [1, 2]. Since, France ABSTRACT Micro-tomography produces high resolution images of bio- logical structures

  7. Improved Imaged-derived Input Function for Study of Human Brain FDG-PET

    E-Print Network [OSTI]

    Renaut, Rosemary

    Improved Imaged-derived Input Function for Study of Human Brain FDG-PET Hongbin Guo, Rosemary tomography (PET) studies. Two time windows can be recognized in the time activity curve measured from the compartmental model for FDG PET [5]. Index Terms Quantification of FDG PET, Automated Image-derived input

  8. IMPROVED QUANTITATIVE METHODS FOR MULTIPLE NEUROPHARMACOLOGICAL NON-INVASIVE BRAIN PET STUDIES

    E-Print Network [OSTI]

    Fessler, Jeffrey A.

    i IMPROVED QUANTITATIVE METHODS FOR MULTIPLE NEUROPHARMACOLOGICAL NON-INVASIVE BRAIN PET STUDIES.2.2 Multiple Neuropharmacological Measures from a single PET scan ................. 4 1.2.2.1 Dual ...................................................................................... 5 1.2.3 Reduction of inter-scanner PET image variability

  9. Wiktionary and NLP: Improving synonymy networks Emmanuel Navarro

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Wiktionary and NLP: Improving synonymy networks Emmanuel Navarro IRIT, CNRS & Université de Toulouse navarro@irit.fr Franck Sajous CLLE-ERSS, CNRS & Université de Toulouse sajous@univ-tlse2.fr Bruno

  10. USING NETWORKS OF JOURNEYS TO IMPROVE A PETROL MARKET MODEL

    E-Print Network [OSTI]

    Clark, Joanna

    USING NETWORKS OF JOURNEYS TO IMPROVE A PETROL MARKET MODEL Alison Heppenstall1 , Andrew Evans1 that the majority of consumers purchased petrol on their way to work or on shopping trips. A network model at the micro level are not tied to global level variables like oil prices); the parameters are often difficult

  11. Improved Classification of Medical Data Using Abductive Network Committees

    E-Print Network [OSTI]

    Abdel-Aal, Radwan E.

    Improved Classification of Medical Data Using Abductive Network Committees Trained on Different 3 860 4281 #12;Summary This paper demonstrates the use of abductive network classifier committees the features and forming subsets of uniform predictive quality for training individual members. The abductive

  12. auditory brain stem implantation: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    auditory brain stem implantation First Page Previous Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 Auditory Brain Stem...

  13. alzheimer disease brain: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    alzheimer disease brain First Page Previous Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 Brain MRI segmentation for the...

  14. adult brain tumor: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    brain tumor First Page Previous Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 Transcriptional signature of an adult brain...

  15. auditory brain stem implants: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    brain stem implants First Page Previous Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 Auditory Brain Stem Response to...

  16. alzheimer disease brains: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 Brain MRI segmentation for the longitudinal follow-up of regional atrophy in Alzheimers...

  17. Proteins, anatomy and networks of the fruit fly brain 

    E-Print Network [OSTI]

    Knowles-Barley, Seymour Francis

    2012-06-25T23:59:59.000Z

    Our understanding of the complexity of the brain is limited by the data we can collect and analyze. Because of experimental limitations and a desire for greater detail, most investigations focus on just one aspect of the ...

  18. INTERACTING WITH SOCIAL NETWORKS TO IMPROVE HEALTHCARE BODY SENSOR NETWORKS

    E-Print Network [OSTI]

    Miles, Will

    Funding for this project was provided by a grant from the Dean's Senior Research Fund and Stetson.2 Body Sensor Networks..................................................................5 2.2.1 Energy, or BSNs, can remotely collect patient data and upload vital statistics to servers over the Internet

  19. Submitted to Handbook of Brain Theory and Neural Networks, 2. Helmholtz Machines

    E-Print Network [OSTI]

    Dayan, Peter

    Submitted to Handbook of Brain Theory and Neural Networks, 2. Helmholtz Machines and Wake). The Helmholtz machine (Dayan et al, 1995) is an example of an approach to unsupervised learning called analysis the paired images and generators to train a graphics model. In the Helmholtz machine, we attempt to have

  20. adult brain tumors: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    adult brain tumors First Page Previous Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 Transcriptional signature of an...

  1. acquired brain injuries: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    acquired brain injuries First Page Previous Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 Students requesting...

  2. acquired brain injury: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    acquired brain injury First Page Previous Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 Students requesting...

  3. Improved Cognitive Function After Transcranial, Light-Emitting Diode Treatments in Chronic, Traumatic Brain Injury: Two Case Reports

    E-Print Network [OSTI]

    Naeser, Margaret A.

    Objective: Two chronic, traumatic brain injury (TBI) cases, where cognition improved following treatment with red and near-infrared light-emitting diodes (LEDs), applied transcranially to forehead and scalp areas, are ...

  4. Targeting carrier-mediated transport to improve the blood-brain barrier permeation of paclitaxel

    E-Print Network [OSTI]

    Desino, Kelly Elizabeth; Audus, Kenneth L.; Ge, Haibo; Georg, Gunda I.; Oyetunji, Jariat; Spletstoser, J. T.; Turunen, B. J.

    2006-10-27T23:59:59.000Z

    with an amide ester of succinate attached at the C7 position shows a dramatic increase in interaction with P-gp as compared to JO1-57 in which the amide ester of succinate is attached at the C10 position. The difference between TX-295 and JO 3-57 is less...TARGETING CARRIER-MEDIATED TRANSPORT TO IMPROVE THE BLOOD-BRAIN BARRIER PERMEATION OF PACLITAXEL Kelly E. Desino1, Kenneth L. Audus1, Haibo Ge2, Gunda I. Georg2, Jariat Oyetunji2, Jared T. Spletstoser2, and Brandon J. Turunen2 University of Kansas...

  5. Experimental Evaluation of Performance Improvements in Abductive Network Classifiers with Problem Decomposition

    E-Print Network [OSTI]

    Abdel-Aal, Radwan E.

    1 Experimental Evaluation of Performance Improvements in Abductive Network Classifiers with Problem by problem decomposition for abductive network classifiers that classify four noisy waveform patterns having decomposition method and significantly superior to an abductive network committee approach. Index Terms

  6. Converging Redundant Sensor Network Information for Improved Building Control

    SciTech Connect (OSTI)

    Dale K. Tiller; Gregor P. Henze

    2005-12-01T23:59:59.000Z

    This project is investigating the development and application of sensor networks to enhance building energy management and security. Commercial, industrial and residential buildings often incorporate systems used to determine occupancy, but current sensor technology and control algorithms limit the effectiveness of these systems. For example, most of these systems rely on single monitoring points to detect occupancy, when more than one monitoring point would improve system performance. Phase I of the project focused on instrumentation and data collection. In Phase I, a new occupancy detection system was developed, commissioned and installed in a sample of private offices and open-plan office workstations. Data acquisition systems were developed and deployed to collect data on space occupancy profiles. In phase II of the project, described in this report, we demonstrate that a network of several sensors provides a more accurate measure of occupancy than is possible using systems based on single monitoring points. We also establish that analysis algorithms can be applied to the sensor network data stream to improve the accuracy of system performance in energy management and security applications, and show that it may be possible to use sensor network pulse rate to distinguish the number of occupants in a space. Finally, in this phase of the project we also developed a prototype web-based display that portrays the current status of each detector in a sensor network monitoring building occupancy. This basic capability will be extended in the future by applying an algorithm-based inference to the sensor network data stream, so that the web page displays the likelihood that each monitored office or area is occupied, as a supplement to the actual status of each sensor.

  7. Converging Redundant Sensor Network Information for Improved Building Control

    SciTech Connect (OSTI)

    Dale Tiller; D. Phil; Gregor Henze; Xin Guo

    2007-09-30T23:59:59.000Z

    This project investigated the development and application of sensor networks to enhance building energy management and security. Commercial, industrial and residential buildings often incorporate systems used to determine occupancy, but current sensor technology and control algorithms limit the effectiveness of these systems. For example, most of these systems rely on single monitoring points to detect occupancy, when more than one monitoring point could improve system performance. Phase I of the project focused on instrumentation and data collection. During the initial project phase, a new occupancy detection system was developed, commissioned and installed in a sample of private offices and open-plan office workstations. Data acquisition systems were developed and deployed to collect data on space occupancy profiles. Phase II of the project demonstrated that a network of several sensors provides a more accurate measure of occupancy than is possible using systems based on single monitoring points. This phase also established that analysis algorithms could be applied to the sensor network data stream to improve the accuracy of system performance in energy management and security applications. In Phase III of the project, the sensor network from Phase I was complemented by a control strategy developed based on the results from the first two project phases: this controller was implemented in a small sample of work areas, and applied to lighting control. Two additional technologies were developed in the course of completing the project. A prototype web-based display that portrays the current status of each detector in a sensor network monitoring building occupancy was designed and implemented. A new capability that enables occupancy sensors in a sensor network to dynamically set the 'time delay' interval based on ongoing occupant behavior in the space was also designed and implemented.

  8. Picturing the brain from different perspectives: the neuroimaging of early AD The last 150 years have witnessed dramatic improvements in the field of what we

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    EDITORIAL Picturing the brain from different perspectives: the neuroimaging of early AD The last. The description of the clinical and cognitive signs of specific brain diseases, as well as our understanding of normal brain function have been considerably improved, thanks to research ranging from anatomoclinical

  9. PET Imaging of Brain 5-HT1A Receptors in Rat In Vivo with 18F-FCWAY and Improvement by

    E-Print Network [OSTI]

    Shen, Jun

    PET Imaging of Brain 5-HT1A Receptors in Rat In Vivo with 18F-FCWAY and Improvement by Successful)cyclohexanecarboxamide) is useful in clinical research with PET for measuring serotonin 1A (5-HT1A) re- ceptor densities in brain applicability to measuring brain regional 5-HT1A receptor densities. Methods: PET of rat head after

  10. E-Print Network 3.0 - acute brain ischemia Sample Search Results

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    brain... models of cerebral ischemia. While studies have demonstrated increases in acrolein in the brain... j in rat brain after forebrain ischemia 80 ... Source: Kalil,...

  11. Improving performance of transmission control protocol (TCP) over mobile wireless networks

    E-Print Network [OSTI]

    Bakshi, Bikram Singh

    1996-01-01T23:59:59.000Z

    ) August 1996 Major Subject: Computer Science ABSTRACT Improving Performance of Transmission Control Protocol (TCP) over Mobile Wireless Networks. (August 1996) Bikram Singli Balrshi, B. Tech. , Delhi Institute of Technology Chair of Advisory.... Explicit Bad State Notification (EBSN) . d. EBSN in Local-Area Wireless Networks . D. Results and Discussion 1. Wide-Area Wireless Networks . 2. Local-Area Wireless Networks SEAMLESS COMMUNICATION IN MOBILE WIRELESS NETWORKS A. Summary of Previous...

  12. Optogenetic Brain Interfaces

    E-Print Network [OSTI]

    Pashaie, Ramin

    The brain is a large network of interconnected neurons where each cell functions as a nonlinear processing element. Unraveling the mysteries of information processing in the complex networks of the brain requires versatile ...

  13. Reduced Metabolsim in Brain 'Control Networks' Following Cocaine-Cues Exposure in Female Cocaine Abusers

    SciTech Connect (OSTI)

    Volkow, N.D.; Wang, G.; Volkow, N.D.; Tomasi, D.; Wang, G.-J.; Fowler, J.S.; Telang, F.; Goldstein, R.Z.; Alia-Klein, N.; Wong, C.T.

    2011-03-01T23:59:59.000Z

    Gender differences in vulnerability for cocaine addiction have been reported. Though the mechanisms are not understood, here we hypothesize that gender differences in reactivity to conditioned-cues, which contributes to relapse, are involved. To test this we compared brain metabolism (using PET and {sup 18}FDG) between female (n = 10) and male (n = 16) active cocaine abusers when they watched a neutral video (nature scenes) versus a cocaine-cues video. Self-reports of craving increased with the cocaine-cue video but responses did not differ between genders. In contrast, changes in whole brain metabolism with cocaine-cues differed by gender (p<0.05); females significantly decreased metabolism (-8.6% {+-} 10) whereas males tended to increase it (+5.5% {+-} 18). SPM analysis (Cocaine-cues vs Neutral) in females revealed decreases in frontal, cingulate and parietal cortices, thalamus and midbrain (p<0.001) whereas males showed increases in right inferior frontal gyrus (BA 44/45) (only at p<0.005). The gender-cue interaction showed greater decrements with Cocaine-cues in females than males (p<0.001) in frontal (BA 8, 9, 10), anterior cingulate (BA 24, 32), posterior cingulate (BA 23, 31), inferior parietal (BA 40) and thalamus (dorsomedial nucleus). Females showed greater brain reactivity to cocaine-cues than males but no differences in craving, suggesting that there may be gender differences in response to cues that are not linked with craving but could affect subsequent drug use. Specifically deactivation of brain regions from 'control networks' (prefrontal, cingulate, inferior parietal, thalamus) in females could increase their vulnerability to relapse since it would interfere with executive function (cognitive inhibition). This highlights the importance of gender tailored interventions for cocaine addiction.

  14. Fractal characterization of fracture networks: An improved box-counting technique

    E-Print Network [OSTI]

    Perfect, Ed

    Fractal characterization of fracture networks: An improved box-counting technique Ankur Roy,1 fracture networks as fractals and estimating their fractal dimensions (D). If this analysis yields a power and r is the box size, then the network is considered to be fractal. However, researchers are divided

  15. Using Micro-Genetic Algorithms to Improve Localization in Wireless Sensor Networks

    E-Print Network [OSTI]

    Tam, Vincent W. L.

    Using Micro-Genetic Algorithms to Improve Localization in Wireless Sensor Networks Vincent Tam methods, micro- genetic algorithms, distance measures. I. INTRODUCTION A wireless sensor network of Hong Kong, Hong Kong. Email: {vtam, kycheng, kslui}@eee.hku.hk Abstract-- Wireless sensor networks

  16. E-Print Network 3.0 - auditory brain-stem response Sample Search...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    brain-stem response Search Powered by Explorit Topic List Advanced Search Sample search results for: auditory brain-stem response Page: << < 1 2 3 4 5 > >> 1 Brain Stem Response to...

  17. E-Print Network 3.0 - amusic brain lost Sample Search Results

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    amusic brain lost Search Powered by Explorit Topic List Advanced Search Sample search results for: amusic brain lost Page: << < 1 2 3 4 5 > >> 1 The Amusic Brain: Lost in Music,...

  18. E-Print Network 3.0 - artery simulating brain Sample Search Results

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    study describes a theoretical model of brain cooling by intracarotid cold saline infusion which takes into Summary: of the brain through the anterior communicating artery, or...

  19. E-Print Network 3.0 - acquired developmental brain Sample Search...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Psychology, Brain and Development Laboratory Collection: Biology and Medicine 45 Running head: DEVELOPMENT AND EARLY FOCAL BRAIN INJURY Linguistic, Cognitive and Affective...

  20. E-Print Network 3.0 - automatic brain tumor Sample Search Results

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Modification of Atlas Priors 1 Marcel... (919) 962-1836 prastawa@cs.unc.edu Running head: AUTOMATIC BRAIN TUMOR SEGMENTATION Academic Radiology... ;Automatic Brain and ......

  1. E-Print Network 3.0 - acquired brain damage Sample Search Results

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Brain Injury, Seizures & Epilepsy Concussion A mild... The blood vessels in the brain may stretch and cranial nerves may be damaged - No bleeding, closed head... : two to...

  2. E-Print Network 3.0 - acute traumatic brain Sample Search Results

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Wayne State University Collection: Physics 76 Documentation Guidelines for Traumatic Brain Injury (TBI) Head injury or traumatic brain injury is considered a medical or...

  3. E-Print Network 3.0 - abnormal brain connection Sample Search...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Search Sample search results for: abnormal brain connection Page: << < 1 2 3 4 5 > >> 1 White Matter Abnormalities in Whole Brain and its Regional Specificity in Chronic...

  4. E-Print Network 3.0 - approach demonstrates brain Sample Search...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Detection of Regional Protein Changes in Rat Brain Sections Using Computer-assisted Image Analysis... concentrationwas also varied in tissue discsmade frommixingrat brain ......

  5. E-Print Network 3.0 - abnormal brain morphology Sample Search...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    of the warped versions of the brain with different ... Source: Columbia University, Pediatric Brain Imaging Laboratory; Shen, Dinggang - Biomedical Research Imaging Center &...

  6. E-Print Network 3.0 - astrocytic brain tumors Sample Search Results

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    astrocytic brain tumors Search Powered by Explorit Topic List Advanced Search Sample search results for: astrocytic brain tumors Page: << < 1 2 3 4 5 > >> 1 This article appeared...

  7. E-Print Network 3.0 - ameliorates fractionated whole-brain Sample...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    fractionated whole-brain Search Powered by Explorit Topic List Advanced Search Sample search results for: ameliorates fractionated whole-brain Page: << < 1 2 3 4 5 > >> 1...

  8. E-Print Network 3.0 - activated brain microglia Sample Search...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    brain microglia Search Powered by Explorit Topic List Advanced Search Sample search results for: activated brain microglia Page: << < 1 2 3 4 5 > >> 1 Juxtavascular Microglia...

  9. E-Print Network 3.0 - activate brain sulfonylurea-sensitive Sample...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    brain sulfonylurea-sensitive Search Powered by Explorit Topic List Advanced Search Sample search results for: activate brain sulfonylurea-sensitive Page: << < 1 2 3 4 5 > >> 1...

  10. E-Print Network 3.0 - attenuate postischemic brain Sample Search...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    postischemic brain Search Powered by Explorit Topic List Advanced Search Sample search results for: attenuate postischemic brain Page: << < 1 2 3 4 5 > >> 1 Permanent Reduction of...

  11. E-Print Network 3.0 - acetazolamide stress brain Sample Search...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    stress brain Search Powered by Explorit Topic List Advanced Search Sample search results for: acetazolamide stress brain Page: << < 1 2 3 4 5 > >> 1 doi:10.1152...

  12. E-Print Network 3.0 - aerosolized brain natriuretic Sample Search...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    brain natriuretic Search Powered by Explorit Topic List Advanced Search Sample search results for: aerosolized brain natriuretic Page: << < 1 2 3 4 5 > >> 1 JOURNAL OF EXPERIMENTAL...

  13. Improving Robust Rolling Stock Circulation in Rapid Transit Networks

    E-Print Network [OSTI]

    2011-08-31T23:59:59.000Z

    Aug 31, 2011 ... Constraints (5) ensure material flow balance in each depot station for ... in the network, RENFE planners always reserve some material and, ...

  14. Improving the Energy Balance of Field-based Routing in Wireless Sensor Networks

    E-Print Network [OSTI]

    Bustamante, Fabián E.

    Improving the Energy Balance of Field-based Routing in Wireless Sensor Networks Goce Trajcevski of the network merge into a single path. These path merging effects decrease significantly the energy balance deployments. When multiple sources transmit infor- mation simultaneously, together with energy balancing

  15. BLACK-BOX MODELLING OF HVAC SYSTEM: IMPROVING THE PERFORMANCES OF NEURAL NETWORKS

    E-Print Network [OSTI]

    Boyer, Edmond

    BLACK-BOX MODELLING OF HVAC SYSTEM: IMPROVING THE PERFORMANCES OF NEURAL NETWORKS Eric FOCK Ile de La RĂ©union - FRANCE ABSTRACT This paper deals with neural networks modelling of HVAC systems of HVAC system can be modelled using manufacturer design data presented as derived performance maps

  16. Improving Rural Emergency Services with Cognitive Radio Networks in Sub-Saharan Africa

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    network coverage is con- centrated around the cities with high density of population. ThroughImproving Rural Emergency Services with Cognitive Radio Networks in Sub-Saharan Africa Dramane technology to address the challenges for ensuring connectivity in remote areas of Africa. Indeed, the current

  17. Spectrum sensing improvement in cognitive radio networks for real-time patients monitoring

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Spectrum sensing improvement in cognitive radio networks for real-time patients monitoring Dramane-bands to perform their transmission any- time and anywhere. Cognitive radio, although appropriate technology. Key words: Cognitive radio networks, e-health, patients monitoring, connectivity, Grey Model, Machine

  18. E-Print Network 3.0 - affects brain activity Sample Search Results

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    TEL (510) 642-4220; FAX (510) 643-6791 Brain... . The largest of these paired groups, the brain, is in the head where the nose, eyes and ears are located Source: Freeman, Walter J....

  19. E-Print Network 3.0 - abnormal brain mri Sample Search Results

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    in soft tissues, such as the brain. Several techniques... for automatically segmenting brain tissues in MRI scans of the head have recently been developed. One goal... in MRI is...

  20. E-Print Network 3.0 - altered gravity brain Sample Search Results

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    brain Search Powered by Explorit Topic List Advanced Search Sample search results for: altered gravity brain Page: << < 1 2 3 4 5 > >> 1 WHITE PAPER 20092010 DECADAL SURVEY ON...

  1. E-Print Network 3.0 - alcohol-related brain damage Sample Search...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Computational Studies of Strain Exposures in Neonate and Mature Rat Brains during Closed Head Impact ANNA... brain injury (TBI) is the most common cause of death in childhood, and...

  2. E-Print Network 3.0 - animal brain tissues Sample Search Results

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    of the nervous system, or we can retrieve all the sub- anatomical tissue types of the brain or head. The tissue... . Therefore, if any EST is from the tissue-type brain, then...

  3. E-Print Network 3.0 - abnormal brain glucose Sample Search Results

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    A, Benani A (2006) Brain glucose sensing: a subtle mechanism. Curr Opin Clin Nutr Metab Care 9... . (2004) Beta oxidation in the brain is required for the effects of non-esterified...

  4. E-Print Network 3.0 - adult vertebrate brain Sample Search Results

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    vertebrate brain Search Powered by Explorit Topic List Advanced Search Sample search results for: adult vertebrate brain Page: << < 1 2 3 4 5 > >> 1 Pierre-Marie Lledo Laboratory...

  5. E-Print Network 3.0 - acute ischemic brain Sample Search Results

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    brain Search Powered by Explorit Topic List Advanced Search Sample search results for: acute ischemic brain Page: << < 1 2 3 4 5 > >> 1 Topic 14 -Stroke 1. Blood supply to the...

  6. E-Print Network 3.0 - affinity brain membrane-binding Sample...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    brain membrane-binding Search Powered by Explorit Topic List Advanced Search Sample search results for: affinity brain membrane-binding Page: << < 1 2 3 4 5 > >> 1 Inositol...

  7. E-Print Network 3.0 - auditory brain stem Sample Search Results

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Powered by Explorit Topic List Advanced Search Sample search results for: auditory brain stem Page: << < 1 2 3 4 5 > >> 1 NB204 Spring 2008 Page 1 of 1 Summary: in the brain...

  8. E-Print Network 3.0 - awake brain states Sample Search Results

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    brain states Search Powered by Explorit Topic List Advanced Search Sample search results for: awake brain states Page: << < 1 2 3 4 5 > >> 1 Comparison of functional activation in...

  9. E-Print Network 3.0 - adult mice brain Sample Search Results

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    brain Search Powered by Explorit Topic List Advanced Search Sample search results for: adult mice brain Page: << < 1 2 3 4 5 > >> 1 Translating animalTranslating animal models into...

  10. E-Print Network 3.0 - adult astrocytic brain Sample Search Results

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    astrocytic brain Search Powered by Explorit Topic List Advanced Search Sample search results for: adult astrocytic brain Page: << < 1 2 3 4 5 > >> 1 This article appeared in a...

  11. E-Print Network 3.0 - adult porcine brain Sample Search Results

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    brain Search Powered by Explorit Topic List Advanced Search Sample search results for: adult porcine brain Page: << < 1 2 3 4 5 > >> 1 The porcine lung as a potential model for...

  12. E-Print Network 3.0 - addiction-related brain regions Sample...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    brain regions Search Powered by Explorit Topic List Advanced Search Sample search results for: addiction-related brain regions Page: << < 1 2 3 4 5 > >> 1 This article appeared in...

  13. E-Print Network 3.0 - auditory multi-class brain-computer Sample...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    multi-class brain-computer Search Powered by Explorit Topic List Advanced Search Sample search results for: auditory multi-class brain-computer Page: << < 1 2 3 4 5 > >> 1 Sensory...

  14. E-Print Network 3.0 - alleviates irradiation-induced brain Sample...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    irradiation-induced brain Search Powered by Explorit Topic List Advanced Search Sample search results for: alleviates irradiation-induced brain Page: << < 1 2 3 4 5 > >> 1 ORIGINAL...

  15. E-Print Network 3.0 - altered blood-brain barrier Sample Search...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    blood-brain barrier Search Powered by Explorit Topic List Advanced Search Sample search results for: altered blood-brain barrier Page: << < 1 2 3 4 5 > >> 1 Applications are...

  16. E-Print Network 3.0 - antisense reduces blood-brain Sample Search...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    reduces blood-brain Search Powered by Explorit Topic List Advanced Search Sample search results for: antisense reduces blood-brain Page: << < 1 2 3 4 5 > >> 1 Inhibition of...

  17. E-Print Network 3.0 - age-related cortical brain Sample Search...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    brain Search Powered by Explorit Topic List Advanced Search Sample search results for: age-related cortical brain Page: << < 1 2 3 4 5 > >> 1 Mapping Cortical Thickness and Gray...

  18. E-Print Network 3.0 - abca1 increases brain Sample Search Results

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    abca1 increases brain Search Powered by Explorit Topic List Advanced Search Sample search results for: abca1 increases brain Page: << < 1 2 3 4 5 > >> 1 ABCA1 Monoclonal Antibodies...

  19. E-Print Network 3.0 - avian brain tissue Sample Search Results

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    brain tissue Search Powered by Explorit Topic List Advanced Search Sample search results for: avian brain tissue Page: << < 1 2 3 4 5 > >> 1 60 Wader Study Group Bulletin 115 (1)...

  20. E-Print Network 3.0 - acid mediates brain-derived Sample Search...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    brain-derived Search Powered by Explorit Topic List Advanced Search Sample search results for: acid mediates brain-derived Page: << < 1 2 3 4 5 > >> 1 Publication list Tadaharu...

  1. E-Print Network 3.0 - aggregating brain cell Sample Search Results

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    brain cell Search Powered by Explorit Topic List Advanced Search Sample search results for: aggregating brain cell Page: << < 1 2 3 4 5 > >> 1 Proc. Natl. Acad. Sci. USA Vol. 81,...

  2. E-Print Network 3.0 - amino-terminal pro-brain natriuretic Sample...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    brain natriuretic Search Powered by Explorit Topic List Advanced Search Sample search results for: amino-terminal pro-brain natriuretic Page: << < 1 2 3 4 5 > >> 1 HEDS Discussion...

  3. Improving Probabilistic Route Discovery in Mobile Ad Hoc Networks

    E-Print Network [OSTI]

    Abdulai, J.

    Abdulai,J. Ould-Khaoua,M. Mackenzie,L.M. Proceedings of 32nd IEEE Conference on Local Computer Networks (LCN 2007) pp 739-746 IEEE Computer Society Press

  4. E-Print Network 3.0 - asphyxia induced brain Sample Search Results

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    optical spectroscopy and magnetic resonance imaging: a combined Summary: Department of Radiology Massachusetts General Hospital Charlestown, Massachusetts and Cognitive Brain......

  5. assistance improves intracorporeal: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    10 Provide Assistance to Improve Water Quality in Hood County Final Report Texas A&M University - TxSpace Summary: Service for funding the Providing Assistance to Improve...

  6. allergic rhinitis improves: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Bulletin No. 774 Genetic Improvement of Private Woodland Ecosystems in the Pacific Northwest Ronald... 3 What does genetic...

  7. An Advanced Channel Framework for Improved Underwater Acoustic Network Simulations

    E-Print Network [OSTI]

    Zhou, Shengli

    such as pollution, climate change and severe weather events is rapidly increasing. At the same time, as ocean underwater sensors, vehicles and devices together using acoustic communication. Network protocol development operation. However, acoustic communication performance is dynamic and dependent upon the environment

  8. E-Print Network 3.0 - acute brain trauma Sample Search Results

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Heidelberg 2007 Summary: . Springer-Verlag Berlin Heidelberg 2007 Classification of CT Brain Images of Head Trauma Tianxia Gong1... . A method for automatic classification of...

  9. E-Print Network 3.0 - abnormal brain processing Sample Search...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Collection: Environmental Sciences and Ecology 4 Hemorrhage Slices Detection in Brain CT Images Ruizhe Liu, Chew Lim Tan, Tze Yun Leong Summary: head injured patients...

  10. E-Print Network 3.0 - assessing blood brain Sample Search Results

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    the cerebral blood perfusion is related to the normal and pathophysiologic conditions of brain metabolism 2, 3... on the head were carefully removed to expose the dorsal blood...

  11. E-Print Network 3.0 - acute brain slices Sample Search Results

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    6 ICH and 5 normal... . Springer-Verlag Berlin Heidelberg 2007 Classification of CT Brain Images of Head Trauma Tianxia Gong1... . A method for automatic classification of...

  12. E-Print Network 3.0 - adolescent brain insights Sample Search...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Control and Psychopathology Laboratory Collection: Biology and Medicine 26 Running Head: Performance monitoring and IQ Brain function during feedback-based learning in...

  13. E-Print Network 3.0 - automated brain labeling Sample Search...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    University Hospital Collection: Biology and Medicine 8 Rule-Based Labeling of CT Head Image Dubravko Cosi c and Sven Loncari c Summary: containing intracerebral brain...

  14. E-Print Network 3.0 - adult drosophila brain Sample Search Results

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    this review. First, both Drosophila larvae and adults can smell... in Neurobiology Nose Brain LH Figure 2 Visualising PNs and MB neurons. (a) Schematic of a Drosophila head......

  15. E-Print Network 3.0 - american brain tumor Sample Search Results

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    make... , and is therefore only applicable to tumors in soft tissues such as the brain Pescarmona et al. 1999. Also... A MATHEMATICAL MODEL OF COMPETITION FOR NUTRIENTS...

  16. E-Print Network 3.0 - auditory brain regions Sample Search Results

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Aftereffect Summary: with visual-auditory recalibration occurring in solely auditory, and head- centered, brain regions. However... mechanisms involved in ventriloquism occur in...

  17. E-Print Network 3.0 - alzheimers disease brain Sample Search...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    September... disease other than incipient Alzheimer's disease, any history of significant brain lesions or head trauma... ... Source: Thompson, Paul - Laboratory of Neuro Imaging,...

  18. E-Print Network 3.0 - acute post-traumatic brain Sample Search...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    pathways. Hyperexcitability and seizure Post-traumatic seizures that follow stroke and brain... of post- traumatic epilepsy include severity of head injury, occurrence of an...

  19. E-Print Network 3.0 - acute brain injury Sample Search Results

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    University of Wisconsin at Madison Collection: Biology and Medicine 6 CT EXAMINATION HEAD, NECK and SPINE Summary: brain damage Hydrocephalus Intracranial Abscess Meningitis...

  20. E-Print Network 3.0 - adult rat brain Sample Search Results

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Image Analysis... Cytochem 44:981-987,19%) KEY WORDS: Immunohistochemistry; Image analysis; GABAAre- ceptor; Rat; Brain... density in postfixed thin sections of rat...

  1. E-Print Network 3.0 - aging brain relevance Sample Search Results

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    relative to males are independent of differences in ... Source: Columbia University, Pediatric Brain Imaging Laboratory Collection: Biology and Medicine Page: << < 1 2 3 4 5 >...

  2. E-Print Network 3.0 - aging mouse brain Sample Search Results

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Vol. 28, No. 19 OPTICS LETTERS 1739 Three-dimensional laser-induced photoacoustic tomography Summary: -induced photoacoustic tomography of mouse brain with the skin and skull...

  3. Improving Efficiency and Effectiveness of Multipath Routing in Computer Networks

    E-Print Network [OSTI]

    Lee, Yong Oh

    2012-07-16T23:59:59.000Z

    - ing energy consumption in computer networks. Two di erent approaches have been advocated earlier, from tra c engineering and topology control to hardware-based approaches. We proposed solutions at two di erent time scales. On a ner time granularity... . . . . . . . . . . . . . . . . . . . . . . . . . . 45 2. Convergence to approximate Wardrop equilibrium . . 47 3. Impact of tra c bursts . . . . . . . . . . . . . . . . . 49 4. Impact of the update interval . . . . . . . . . . . . . . 54 D. Related work...

  4. CONVERGING REDUNDANT SENSOR NETWORK INFORMATION FOR IMPROVED BUILDING CONTROL

    SciTech Connect (OSTI)

    Dale K. Tiller; Gregor P. Henze

    2004-11-01T23:59:59.000Z

    Knowing how many people occupy a building, and where they are located, is a key component of building energy management and security. Commercial, industrial and residential buildings often incorporate systems used to determine occupancy, however, current sensor technology and control algorithms limit the effectiveness of both energy management and security systems. This topical report describes results from the first phase of a project to design, implement, validate, and prototype new technologies to monitor occupancy, control indoor environment services, and promote security in buildings. Phase I of the project focused on instrumentation and data collection. In this project phase a new occupancy detection system was developed, commissioned and installed in a sample of private offices and open-plan office workstations. Data acquisition systems were developed and deployed to collect data on space occupancy profiles. Analysis tools based on Bayesian probability theory were applied to the occupancy data generated by the sensor network. The inference of primary importance is a probability distribution over the number of occupants and their locations in a building, given past and present sensor measurements. Inferences were computed for occupancy and its temporal persistence in individual offices as well as the persistence of sensor status. The raw sensor data were also used to calibrate the sensor belief network, including the occupancy transition matrix used in the Markov model, sensor sensitivity, and sensor failure models. This study shows that the belief network framework can be applied to the analysis of data streams from sensor networks, offering significant benefits to building operation compared to current practice.

  5. E-Print Network 3.0 - adult human brain Sample Search Results

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    an adult head model. II. Effect of superficial tissue thickness Summary: activation: OD a brain Lbrain . (4) Fig. 1. Adult head model used to evaluate the effects of superficial......

  6. E-Print Network 3.0 - adult zebrafish brain Sample Search Results

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    adult zebrafish brain Page: << < 1 2 3 4 5 > >> 1 Guidelines for Use of Zebrafish in the NIH Intramural Research Program Scientific Background Summary: to interpret such stimuli as...

  7. E-Print Network 3.0 - abnormal brain iron Sample Search Results

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Powered by Explorit Topic List Advanced Search Sample search results for: abnormal brain iron Page: << < 1 2 3 4 5 > >> 1 51ISSN 1756-8919Future Med. Chem. (2010) 2(1),...

  8. E-Print Network 3.0 - acute brain stem Sample Search Results

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Search Powered by Explorit Topic List Advanced Search Sample search results for: acute brain stem Page: << < 1 2 3 4 5 > >> 1 Stem Cell Science: Overviews of Selected Disease...

  9. E-Print Network 3.0 - adolescent brain development Sample Search...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Powered by Explorit Topic List Advanced Search Sample search results for: adolescent brain development Page: << < 1 2 3 4 5 > >> 1 Beatriz Luna, PhDBeatriz Luna, PhD Laboratory...

  10. E-Print Network 3.0 - aged human brain Sample Search Results

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    of the human Summary: le of the human brain: an in vivo 1 H-MRS study of young versus middle-aged subjects Igor D. Grachev,*, , Amar... and their relationships in normal...

  11. E-Print Network 3.0 - ageing human brain Sample Search Results

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    of the human Summary: le of the human brain: an in vivo 1 H-MRS study of young versus middle-aged subjects Igor D. Grachev,*, , Amar... and their relationships in normal...

  12. Improved bounds and algorithms for graph cuts and network reliability David G. Harris

    E-Print Network [OSTI]

    Srinivasan, Aravind

    Improved bounds and algorithms for graph cuts and network reliability David G. Harris Aravind, the graphs we deal with will be multi-graphs with no self-loops. We define R(p), the reliability polyno- mial there is no currently known algorithm for estimating R(p), the complementary probability U(p) = 1 - R(p), which we

  13. Reactive power management of distribution networks with wind generation for improving voltage stability

    E-Print Network [OSTI]

    Pota, Himanshu Roy

    -loadability Reactive power margin Wind turbine a b s t r a c t This paper proposes static and dynamic VAR planningReactive power management of distribution networks with wind generation for improving voltage February 2013 Available online Keywords: Composite load Distributed generation D-STATCOM Q

  14. Improved Connectivity using Hybrid Uni/Omni-Directional Antennas in Sensor Networks

    E-Print Network [OSTI]

    Kwon, Ji Heon

    2008-05-27T23:59:59.000Z

    In partial fulfillment of the requirements of the UNIVERSITY UNDERGRADUATE RESEARCH FELLOWS April 2008 Major: Electrical Engineering ii ABSTRACT Improved Connectivity using Hybrid Uni/Omni-Directional Antennas in Sensor Networks (April 2008... environments: MATLAB, Maple Design automation tools: SIMULINK, PSpice, MAX+PLUS II LEADERSHIP & ACTIVITIES Student Engineers’ Council Undergraduate Curriculum Committee, Dept. of Computer Science Computing Service Advisory Committee, Dept. of Computer...

  15. The Economic Value of Improving the Reliability of Supply on a Bulk Power Transmission Network

    E-Print Network [OSTI]

    The Economic Value of Improving the Reliability of Supply on a Bulk Power Transmission Network Economics and Management and School of Electrical and Computer Engineering Cornell University Abstract, there is no established way of measuring the economic value of reliability, and as a result, regulators have adopted

  16. The Why UI: Using Goal Networks to Improve User Dustin A. Smith

    E-Print Network [OSTI]

    Lieberman, Henry

    The Why UI: Using Goal Networks to Improve User Interfaces Dustin A. Smith MIT Media Lab 20 Ames St; Cambridge, MA 02139 dustin@media.mit.edu Henry Lieberman MIT Media Lab 20 Ames St; Cambridge, MA 02139 lieber@media.mit.edu ABSTRACT People interact with interfaces to accomplish goals, and knowl- edge about

  17. Mining Call and Mobility Data to Improve Paging Efficiency in Cellular Networks

    E-Print Network [OSTI]

    , Data Mining, CDMA 1. INTRODUCTION Location management is a key component in the operation of cellularMining Call and Mobility Data to Improve Paging Efficiency in Cellular Networks Hui Zang Sprint a different, data-driven approach in how we design and evaluate our solution. Specifically, we mine more than

  18. Improving Network Connection Locality on Multicore Systems Aleksey Pesterev Jacob Strauss Nickolai Zeldovich Robert T. Morris

    E-Print Network [OSTI]

    Gummadi, Ramakrishna

    Improving Network Connection Locality on Multicore Systems Aleksey Pesterev Jacob Strauss Nickolai Zeldovich Robert T. Morris MIT CSAIL Quanta Research Cambridge {alekseyp, nickolai, rtm}@csail.mit.edu jacob and that copies bear this notice and the full citation on the first page. To copy otherwise, to republish, to post

  19. E-Print Network 3.0 - abnormal brain ct Sample Search Results

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    P R I N G 2 0 0 7 N Y U P H Y S I C I A N S P R I N G 2 0 0 7 1 1 Summary: to put their head in a CT scanner," says Dr. de Leon. At the time, brain scans were used in dementia...

  20. Early Brain Response to Low-Dose Radiation Exposure Involves Molecular Networks and Pathways Associated with Cognitive Functions, Advanced Aging and Alzheimer's Disease

    SciTech Connect (OSTI)

    Lowe, Xiu R; Bhattacharya, Sanchita; Marchetti, Francesco; Wyrobek, Andrew J.

    2008-06-06T23:59:59.000Z

    Understanding the cognitive and behavioral consequences of brain exposures to low-dose ionizing radiation has broad relevance for health risks from medical radiation diagnostic procedures, radiotherapy, environmental nuclear contamination, as well as earth orbit and space missions. Analyses of transcriptome profiles of murine brain tissue after whole-body radiation showed that low-dose exposures (10 cGy) induced genes not affected by high dose (2 Gy), and low-dose genes were associated with unique pathways and functions. The low-dose response had two major components: pathways that are consistently seen across tissues, and pathways that were brain tissue specific. Low-dose genes clustered into a saturated network (p < 10{sup -53}) containing mostly down-regulated genes involving ion channels, long-term potentiation and depression, vascular damage, etc. We identified 9 neural signaling pathways that showed a high degree of concordance in their transcriptional response in mouse brain tissue after low-dose radiation, in the aging human brain (unirradiated), and in brain tissue from patients with Alzheimer's disease. Mice exposed to high-dose radiation did not show these effects and associations. Our findings indicate that the molecular response of the mouse brain within a few hours after low-dose irradiation involves the down-regulation of neural pathways associated with cognitive dysfunctions that are also down regulated in normal human aging and Alzheimer's disease.

  1. A policy letter. DG-GRID Improving distribution network regulation for enhancing the share of sustainable distributed generation in Europe

    E-Print Network [OSTI]

    A policy letter. DG-GRID Improving distribution network regulation for enhancing the share-generation of electricity and heat (CHP). This drives the growth of distributed generation (DG) ­ generators connected to the distribution network ­ to significant levels. The DG-GRID project1 carried out by nine European universities

  2. A PROPOSITIONAL REPRESENTATION MODEL OF ANATOMICAL AND FUNCTIONAL BRAIN DATA

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    A PROPOSITIONAL REPRESENTATION MODEL OF ANATOMICAL AND FUNCTIONAL BRAIN DATA Pablo MATURANA as a methodological tool to examine brain network organization, topology and complex dynamics, as well brain data and neuropsychological assessments linked to the functions explored in these assessments

  3. Developmental, Genetic, and Cognitive Correlates of Structural Brain Connectivity

    E-Print Network [OSTI]

    Dennis, Emily

    2013-01-01T23:59:59.000Z

    Brain network local interconnectivity loss in aging APOE-4decline of measures of interconnectivity with age. As will

  4. The Social Brain; An Investigation into Total Social Network Size and Relationship Closeness within a Distinct Human Population. 

    E-Print Network [OSTI]

    Brown, Philippa

    2008-06-27T23:59:59.000Z

    The ‘Social Brain Hypothesis’ suggests that selection for the expansion of the neocortex in primate species is thought to originate from the cognitive demands posed by social living. Research into primates, has shown that neocortex size...

  5. Energy efficient and fairness improved medium access scheduling algorithms for mobile ad hoc networks;.

    E-Print Network [OSTI]

    Priakanth P

    2015-01-01T23:59:59.000Z

    ??In mobile ad hoc networks dynamically changing topologies are newlinethe direct result of the mobility of the nodes which characterize the ad hoc newlinenetworks Each… (more)

  6. E-Print Network 3.0 - antagonism improves ventricular Sample...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    and can cause short term improvement in cardiac output. However, its use as a chronic infusion therapy... the recurrence of acute heart failure, to improve clinical status and...

  7. E-Print Network 3.0 - attaining improved mechanical Sample Search...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    improved mechanical Search Powered by Explorit Topic List Advanced Search Sample search results for: attaining improved mechanical Page: << < 1 2 3 4 5 > >> 1 Student Internship...

  8. E-Print Network 3.0 - air quality improvement Sample Search Results

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Summary: for the project in order to effectively improve air quality. Including air pollution as a screening criterion... ... the improvements will be undertaken in a...

  9. E-Print Network 3.0 - availability improvement program Sample...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    improvements2 , it makes sense to review the history of these programs and begin gleaning best practices... for encouraging comprehensive home energy improvements. Looking across...

  10. Performance improvement of an optical network providing services based on multicast

    E-Print Network [OSTI]

    Reinhard, Vincent; Tomasik, Joanna; Barth, Dominique; Weisser, Marc-Antoine

    2011-01-01T23:59:59.000Z

    Operators of networks covering large areas are confronted with demands from some of their customers who are virtual service providers. These providers may call for the connectivity service which fulfils the specificity of their services, for instance a multicast transition with allocated bandwidth. On the other hand, network operators want to make profit by trading the connectivity service of requested quality to their customers and to limit their infrastructure investments (or do not invest anything at all). We focus on circuit switching optical networks and work on repetitive multicast demands whose source and destinations are {\\em \\`a priori} known by an operator. He may therefore have corresponding trees "ready to be allocated" and adapt his network infrastructure according to these recurrent transmissions. This adjustment consists in setting available branching routers in the selected nodes of a predefined tree. The branching nodes are opto-electronic nodes which are able to duplicate data and retransmit...

  11. Congestion on the Internet : operator responses, economic analysis, and improving the network architecture

    E-Print Network [OSTI]

    Bauer, Steven J. (Steven Joseph), 1976-

    2008-01-01T23:59:59.000Z

    Our thesis presents the results of monitoring traffic management techniques of network providers. We find that in addition to complete blocking of traffic flows on some transport layer ports, providers are also actively ...

  12. E-Print Network 3.0 - acid show improved Sample Search Results

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    show improved Search Powered by Explorit Topic List Advanced Search Sample search results for: acid show improved Page: << < 1 2 3 4 5 > >> 1 Genetic Engineering of Plant Oils...

  13. The role of organizational learning and social networks in school improvement : a case study of corrective action schools

    E-Print Network [OSTI]

    Nelson, Joan M.

    2011-01-01T23:59:59.000Z

    using the social networks of information, innovation, trust,using social networks of information, innovation, trust,the social networks of information, innovation, trust,

  14. An examination of professional learning in two districts : comparing the quality and quantity of network structure for improved achievement

    E-Print Network [OSTI]

    Bloomberg, Paul J.

    2012-01-01T23:59:59.000Z

    perceptions of administrators in the network. Interview wereoffice administrators are central in the network as shown bysite administrator) were isolates in this network, meaning

  15. The Noisy Brain: Stochastic Dynamics as a Principle of

    E-Print Network [OSTI]

    Rolls, Edmund T.

    The Noisy Brain: Stochastic Dynamics as a Principle of Brain Function Edmund T. Rolls Oxford Centre random spiking times of individual neurons produce a source of noise in the brain. The aim of this book is to consider the effects of this and other noise on brain pro- cessing. We show that in cortical networks

  16. Learning Brain Connectivity of Alzheimer's Disease from Neuroimaging Data

    E-Print Network [OSTI]

    Li, Jing

    Learning Brain Connectivity of Alzheimer's Disease from Neuroimaging Data Shui Huang2 , Jing Li2 to alternation in the functional brain network, i.e., the functional connectivity among different brain regions. In this paper, we consider the problem of learning functional brain connectivity from neuroimaging, which holds

  17. Network protocol changes can improve DisCom WAN performance : evaluating TCP modifications and SCTP in the ASC tri-lab environment.

    SciTech Connect (OSTI)

    Tolendino, Lawrence F.; Hu, Tan Chang

    2005-06-01T23:59:59.000Z

    The Advanced Simulation and Computing (ASC) Distance Computing (DisCom) Wide Area Network (WAN) is a high performance, long distance network environment that is based on the ubiquitous TCP/IP protocol set. However, the Transmission Control Protocol (TCP) and the algorithms that govern its operation were defined almost two decades ago for a network environment vastly different from the DisCom WAN. In this paper we explore and evaluate possible modifications to TCP that purport to improve TCP performance in environments like the DisCom WAN. We also examine a much newer protocol, SCTP (Stream Control Transmission Protocol) that claims to provide reliable network transport while also implementing multi-streaming, multi-homing capabilities that are appealing in the DisCom high performance network environment. We provide performance comparisons and recommendations for continued development that will lead to network communications protocol implementations capable of supporting the coming ASC Petaflop computing environments.

  18. E-Print Network 3.0 - atomoxetine improves patient Sample Search...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    plan of action Gattuso Rapid Diagnostic Centre... Process Improvement Princess Margaret Hospital The Gattuso Rapid Diagnostic Centre ... Source: Sun, Yu - Department of...

  19. E-Print Network 3.0 - accurate timing improves Sample Search...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    teaching and outreach by minimising... technology to improve services and job satisfaction To achieve the Investors in People standard across Source: Bearhop, Stuart -...

  20. E-Print Network 3.0 - accommodation improves visual Sample Search...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    results for: accommodation improves visual Page: << < 1 2 3 4 5 > >> 1 Policies, Procedures and Guidelines Complete Policy Title Summary: association or union and the employer...

  1. E-Print Network 3.0 - assessments improves links Sample Search...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    significant room for improvement in assessment (George & Cowan, 1999, p. 99). Recent QAA reviews reveal... assessment builds up across a whole course of study, ... Source:...

  2. E-Print Network 3.0 - angioplasty improves patency Sample Search...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    New Insights Into Atherothrombosis Summary: of atherosclerotic risk factor modification on improving long-term morbidity and mortality in patients with CLI... events and...

  3. E-Print Network 3.0 - antibiotics improve chemotactic Sample...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    research... that this crystallographic work will guide improved structure-based drug design ... Source: Martin, Jan M.L. - Department of Organic Chemistry, Weizmann Institute of...

  4. E-Print Network 3.0 - anaerobic conditions improve Sample Search...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    online VFA monitoring system is presented, as well as the methods for improving biogas production... monitoring system for the anaerobic process, based on headspace gas...

  5. Not Quickly, Just in Time: Improving the Timeliness and Reliability of Control Traffic in Utility Networks

    E-Print Network [OSTI]

    Correia, Miguel

    networks, that interconnect the CI facil- ities (e.g., transformation substations). This communication company (e.g., transformation substations), but in a distributed way with systems and applications often] and unavailability may become even more frequent due to denial-of-service attacks (DoS), e.g., ex- ecuted as cyber

  6. Does brain activity stem from high-dimensional chaotic dynamics? Evidence from the human electroencephalogram, cat cerebral cortex and artificial neuronal networks

    E-Print Network [OSTI]

    Sami El Boustani; Alain Destexhe

    2009-04-27T23:59:59.000Z

    Nonlinear time series analyses have suggested that the human electroencephalogram (EEG) may share statistical and dynamical properties with chaotic systems. During slow-wave sleep or pathological states like epilepsy, correlation dimension measurements display low values, while in awake and attentive subjects, there is not such low dimensionality, and the EEG is more similar to a stochastic variable. We briefly review these results and contrast them with recordings in cat cerebral cortex, as well as with theoretical models. In awake or sleeping cats, recordings with microelectrodes inserted in cortex show that global variables such as local field potentials (local EEG) are similar to the human EEG. However, in both cases, neuronal discharges are highly irregular and exponentially distributed, similar to Poisson stochastic processes. To attempt reconcile these results, we investigate models of randomly-connected networks of integrate-and-fire neurons, and also contrast global (averaged) variables, with neuronal activity. The network displays different states, such as "synchronous regular" (SR) or "asynchronous irregular" (AI) states. In SR states, the global variables display coherent behavior with low dimensionality, while in AI states, the global activity is high-dimensionally chaotic with exponentially distributed neuronal discharges, similar to awake cats. Scale-dependent Lyapunov exponents and epsilon-entropies show that the seemingly stochastic nature at small scales (neurons) can coexist with more coherent behavior at larger scales (averages). Thus, we suggest that brain activity obeys similar scheme, with seemingly stochastic dynamics at small scales (neurons), while large scales (EEG) display more coherent behavior or high-dimensional chaos.

  7. E-Print Network 3.0 - approach improves icu Sample Search Results

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    and Medicine ; Environmental Sciences and Ecology 36 Moran et al. BMC Medical Research Methodology 2010, 10:32 http:www.biomedcentral.com1471-22881032 Summary: an improved...

  8. E-Print Network 3.0 - adverse effects improving Sample Search...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    pharmacovigilance and the role of the pharmacist'. The main theme is: How can the safety of medicinal drugs be Summary: of improvement. The drastic measure of taking a drug...

  9. E-Print Network 3.0 - acid improves global Sample Search Results

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    global Search Powered by Explorit Topic List Advanced Search Sample search results for: acid improves global Page: << < 1 2 3 4 5 > >> 1 Atmos. Chem. Phys., 4, 17591769, 2004...

  10. Imaging - Clearer brain scans ... | ornl.gov

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Imaging - Clearer brain scans ... A clever signal noise reduction strategy developed by a team that includes Oak Ridge National Laboratory's Ben Lawrie could dramatically improve...

  11. Brain Gym.

    E-Print Network [OSTI]

    Ramsperger, Elizabeth Anne

    2006-01-01T23:59:59.000Z

    ?? This study sought to determine the potential impact a program of exercises known as Brain Gym has on students' attention and ability to focus… (more)

  12. Improving energy efficiency via probabilistic rate combination in 802.11 multi-rate wireless networks

    E-Print Network [OSTI]

    Lui, John C.S.

    transmission. An alternative way to conserve energy is to apply power control [1­4]. A wireless node is allowedImproving energy efficiency via probabilistic rate combination in 802.11 multi-rate wireless in revised form 20 January 2009 Accepted 27 January 2009 Available online 6 February 2009 Keywords: Energy

  13. Improving TCP Performance over Networks with Wireless Components using ``Probing Devices''

    E-Print Network [OSTI]

    Tsaoussidis, Vassilis

    , but the actual ``sending window'' never exceeds the minimum of the advertised and congestion window. Standard TCP­Tahoe and TCP­Reno. We show that, this way, standard TCP can improve its per­ formance without requiring any the design limitations of the probing device itself. The aggressive or conservative nature of the probing

  14. FR.OGAG.HHN T240 Observatoire de Grenoble broadband seismic network modernization and improvement

    E-Print Network [OSTI]

    French Alps. : 33 RAP : 44 SismalpRLBP (SP & BB) : 15 GPSRENAG : 6 OMIV The Interreg/Alcotra RISE sites is based on : High performance 6 channels digitizers (Kephren_BB Agecodagis) Broad and barometric insulation for the BB (improvement at long period >10s) electrical and lightning protection

  15. Optimal Transmission Switching in Electric Networks for Improved Economic Operations1

    E-Print Network [OSTI]

    Ferris, Michael C.

    . Abstract Growing demand for electric power seems to necessitate new transmission lines, but obstacles transmission lines is a common practice done with a mature technology. Circuit breakers are used to open and close transmission lines. System operators can, and do, change the topology of systems to improve

  16. Foundations of Artificial Intelligence Neural Networks

    E-Print Network [OSTI]

    Qu, Rong

    Foundations of Artificial Intelligence Neural Networks Building Artificial Brains #12;Background of observed examples (training data). #12;Neural Networks Objectives Show how the human brain works Introduction The Human Brain (How a neuron works) Building Artificial Neurons Network Architecture and Learning

  17. Emergency Preparedness Sector Coordinators (EP) are a critical part of the campus effort to improve our emergency preparedness. Sector Coords. will serve as a network of university

    E-Print Network [OSTI]

    Tennessee, University of

    Emergency Preparedness Sector Coordinators (EP) are a critical part of the campus effort to improve the EP Zone Coord. While this assignment will result in some extra work, it will prove to be rewarding to a sector. The network will provide better information and services to the "occupants" of the area. EP

  18. 21 Steps to Improve Cyber Security of SCADA Networks | Department of Energy

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankCombustionImprovement3 Beryllium-Associated Worker2014 HouseCoveredAirDepartment ofof04of50Establish1

  19. brain control of coughing

    E-Print Network [OSTI]

    Stuart B Mazzone; Alice E Mcgovern; Seung-kwon Yang; Ariel Woo; Ayaka Ando; Jennifer Leech; Michael J Farrell

    There is an overwhelming body of evidence to support the existence of higher brain circuitries involved in the sensory detection of airways irritation and the motor control of coughing. The concept that cough is purely a reflex response to airways irritation is now superseded by the recognition that perception of an urge-to-cough and altered behavioral modification of coughing are key elements of cough disorders associated with airways disease. Understanding the pathways by which airway sensory nerves ascend into the brain and the patterns of neural activation associated with airways irritation will undoubtedly provide new insights into disordered coughing. This brief review aims to explore our current understanding of higher order cough networks by summarizing data from recent neuroanatomical and functional studies in animals and humans. We provide evidence for the existence of distinct higher order network components involved in the discrimination of signals arising from the airways and the motor control of coughing. The identification of these network components provides a blueprint for future research and the development of targeted managements for cough and the urge-to-cough. John Widdicombe remembered In 2002, while holidaying in London, I (SBM) received a pleasant email invitation to join John and his wife

  20. Brain-Computer Interfaces

    E-Print Network [OSTI]

    Aggarwal, Khushbu

    2009-01-01T23:59:59.000Z

    I \\ November 16, 2008). CNN. ’Brain’ in a dish ?ies ?ightREFERENCES Adams, Ray. Brain Computer Interfaces: Psychologyaccessed Biever, Celeste. Brain cells in a dish ?y ?ghter

  1. Vortices in Brain waves

    E-Print Network [OSTI]

    Freeman, Walter J III; Vitiello, Giuseppe

    2010-01-01T23:59:59.000Z

    2003). Vortices in Brain Waves 62. M. E. Raichle, ScienceVORTICES IN BRAIN WAVES WALTER J. FREEMAN Department ofthat is recorded in brain waves (electroencephalogram, EEG).

  2. Cohort-level brain mapping: learning cognitive atoms to single out specialized regions

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Cohort-level brain mapping: learning cognitive atoms to single out specialized regions G. Varoquaux, France Abstract. Functional Magnetic Resonance Imaging (fMRI) studies map the human brain by testing specialized brain regions and networks. The number of functional networks extracted is limited by the number

  3. JOURNAL OF LATEX CLASS FILES, VOL. ?, NO. ??, ?? 2006 1 Blockwise processing applied to brain

    E-Print Network [OSTI]

    Andrzejak, Artur

    -- The study of cerebral micro-vascular networks requires high resolution images. However, to obtain of the brain micro-vascular network is crucial to understanding brain behavior. Indeed, micro-vascular bloodJOURNAL OF LATEX CLASS FILES, VOL. ?, NO. ??, ?? 2006 1 Blockwise processing applied to brain micro

  4. Community structure in the phonological network

    E-Print Network [OSTI]

    Siew, Cynthia S. Q.

    2013-08-27T23:59:59.000Z

    Community structure, which refers to the presence of densely connected groups within a larger network, is a common feature of several real-world networks from a variety of domains such as the human brain, social networks ...

  5. anatomically modern humans: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Last Page Topic Index 1 HIERARCHICAL TOPOLOGICAL NETWORK ANALYSIS OF ANATOMICAL HUMAN BRAIN CONNECTIVITY AND Mathematics Websites Summary: HIERARCHICAL TOPOLOGICAL NETWORK...

  6. Parameter assignment for improved connectivity and security in randomly deployed wireless sensor networks via hybrid omni/uni-directional antennas

    E-Print Network [OSTI]

    Shankar, Sonu

    2009-05-15T23:59:59.000Z

    ,omni-directional antennas have been used for communication in wireless sensor net-works. In this thesis, a hybrid communication model is presented where-in, nodes ina network are capable of both omni-directional and uni-directional communication.The eect of such a model...

  7. neuroscience / brain & mind neuroscience / brain & mind

    E-Print Network [OSTI]

    Denham, Graham

    neuroscience / brain & mind #12;neuroscience / brain & mind Investment Construction of new Centre for Brain & Mind $3.6million External funding for researchers $60million Provincial investment in a 3T and one of three 7T MRI in the world $12million #12;neuroscience / brain & mind Recruitment and Building

  8. Redesigning and improving the efficiency of bus transit networks using automatically collected data : the case of Gipuzkoa, Spain

    E-Print Network [OSTI]

    Gutiérrez de Quevedo Aguerrebere, Carlos

    2012-01-01T23:59:59.000Z

    Transit agencies around the world are adopting Automatically Data Collection Systems (ADCS) to carry out standard tasks in the management of their networks. Many of these agencies have taken further steps in the use of ...

  9. Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary)morphinanInformation Desert Southwest Regionat Cornell Batteries &NSTCurrent Issues &Network » Network

  10. Vortices in Brain waves

    E-Print Network [OSTI]

    Freeman, Walter J III; Vitiello, Giuseppe

    2010-01-01T23:59:59.000Z

    Burke and M. D. Holmes, Human Brain Mapping 19(4), 248 7. W.20. W. J. Freeman, How Brains Make Up Their Minds (Columbiaand K. Yasue, Quantum Brain Dynamics and Consciousness (John

  11. Singing the Brain Electric

    E-Print Network [OSTI]

    Chua, Grace (Grace W. J.)

    2008-01-01T23:59:59.000Z

    Singing the Brain Electric Brain pacemakers, scientists have found, can treat depression by correcting neural circuitry gone haywire. This thesis examines how such technology - a technique known as deep-brain stimulation, ...

  12. 2005 International Conference on Wireless Networks, Communications and Mobile Computing Improving TCP Throughput over Lossy Links Using

    E-Print Network [OSTI]

    Atiquzzaman, Mohammed

    TCP Throughput over Lossy Links Using Protocol-Level Speculations Haowei Bai Honeywell Labs 3660- The degradation of Transport Control Protocol (TCP) throughput in networks with lossy links is mainly due to processor performance degradation due to control hazards in CPU design. First, two types of loss events

  13. Using Knowledge-Based Neural Networks to Improve Algorithms: Refining the Chou-Fasman Algorithm for Protein Folding

    E-Print Network [OSTI]

    Maclin, Rich

    for Protein Folding Richard Maclin Jude W. Shavlik Computer Sciences Dept. University of Wisconsin 1210 W learning Theory refinement Neural networks Finite-state automata Protein folding Chou-Fasman algorithm-Fasman algorithm, a method for predicting how globular proteins fold. Empirical evidence shows

  14. Gene expression abnormalities in the autistic brain

    E-Print Network [OSTI]

    Chow, Maggie Lok Mun

    2011-01-01T23:59:59.000Z

    13 Early Brain Overgrowth13 Discontinuous brainpostmortem brain ______________________________________ 33

  15. Human Functional Brain Imaging

    E-Print Network [OSTI]

    Rambaut, Andrew

    Human Functional Brain Imaging 1990­2009 September 2011 Portfolio Review Summary Brain Imaging #12 Dale ­ one of our first Trustees. Understanding the brain remains one of our key strategic aims today three-fold: · to identify the key landmarks and influences on the human functional brain imaging

  16. ANNUAL REPORT National Brain Research Centre

    E-Print Network [OSTI]

    Dhingra, Narender K.

    1 ANNUAL REPORT 2003-2004 National Brain Research Centre Manesar, India #12;2 Table of Contents in neuroscience. Promoting neuroscience in India through networking among institutions across the country. If we can fathom how children learn, our education policy could be strengthened with a new understanding

  17. A Methodology for Empirical Analysis of Brain Connectivity through Graph Mining

    E-Print Network [OSTI]

    Xie, Mengjun

    A Methodology for Empirical Analysis of Brain Connectivity through Graph Mining Jiang Bian, Josh M Informatics Brain Imaging Research Center, Psychiatric Research Institute University of Arkansas for Medical and functional brain connectivity networks and has helped researchers conceive the effects of neurological

  18. Reliability Gain of Network Coding in Lossy Wireless Networks

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    Reliability Gain of Network Coding in Lossy Wireless Networks Majid Ghaderi Department of Computer that network coding improves network reliability by reducing the number of packet retransmissions in lossy networks. However, the extent of the reliability benefit of network coding is not known. This paper

  19. Brain Prostheses as a Dynamic System (Immortalizing the Human Brain?)

    E-Print Network [OSTI]

    Vadim Astakhov; Tamara Astakhova

    2007-05-17T23:59:59.000Z

    Interest in development of brain prostheses, which might be proposed to recover mental functions lost due to neuron-degenerative disease or trauma, requires new methods in molecular engineering and nanotechnology to build artificial brain tissues. We develop a Dynamic Core model to analyze complexity of damaged biological neural network as well as transition and recovery of the system functionality due to changes in the system environment. We provide a method to model complexity of physical systems which might be proposed as an artificial tissue or prosthesis. Delocalization of Dynamic Core model is developed to analyze migration of mental functions in dynamic bio-systems which undergo architecture transition induced by trauma. Term Dynamic Core is used to define a set of causally related functions and Delocalization is used to describe the process of migration. Information geometry and topological formalisms are proposed to analyze information processes. A holographic model is proposed to construct dynamic environment with self-poetic Dynamic Core which preserve functional properties under transition from one host to another. We found statistical constraints for complex systems which conserve a Dynamic Core under environment transition. Also we suggest those constraints might provide recommendations for nanotechnologies and tissue engineering used in development of an artificial brain tissue.

  20. Mechanisms of brain ventricle development

    E-Print Network [OSTI]

    Lowery, Laura Anne

    2008-01-01T23:59:59.000Z

    The brain ventricles are a conserved system of fluid-filled cavities within the brain that form during the earliest stages of brain development. Abnormal brain ventricle development has been correlated with neurodevelopmental ...

  1. NAVIGATING THE BRAIN'S MYSTERIES

    E-Print Network [OSTI]

    C C C A A A A G A G G D D D D D F D F F F H H H E E E E FHE E B B B C E B NAVIGATING THE BRAIN of the brain-- one that shows its complex trafficking across trillions of neuronal connections. Addressing: outlining "the next great American project," the BRAIN (Brain Research through Advancing Innovative

  2. I am John's Brain 

    E-Print Network [OSTI]

    Clark, Andy

    1995-01-01T23:59:59.000Z

    The brain and its "agent" debate the provenance of thoughts in the charming language of an old Readers Digest article.

  3. Human Functional Brain Imaging

    E-Print Network [OSTI]

    Rambaut, Andrew

    Human Functional Brain Imaging 1990­2009 September 2011 Portfolio Review #12;2 | Portfolio Review: Human Functional Brain ImagingThe Wellcome Trust is a charity registered in England and Wales, no's role in supporting human functional brain imaging and have informed `our' speculations for the future

  4. The Brain Basis of Emotions 1 BRAIN BASIS OF EMOTION

    E-Print Network [OSTI]

    Barrett, Lisa Feldman

    The Brain Basis of Emotions 1 BRAIN BASIS OF EMOTION The brain basis of emotion: A meta, Building 149 Charlestown, MA 02129 lindqukr@nmr.mgh.harvard.edu #12;The Brain Basis of Emotions 2 Abstract Researchers have wondered how the brain creates emotions since the early days of psychological science

  5. On Brain Oedema.

    E-Print Network [OSTI]

    Jungner, Mĺrten

    2012-01-01T23:59:59.000Z

    ??Traumatic brain injury and bacterial meningitis may at a glance appear as two different disease entities. The host reaction, however, to both trauma and infection… (more)

  6. The Brain's Inner Workings

    E-Print Network [OSTI]

    Bandettini, Peter A.

    The Architecture of the Brain ......................................................................... 18 Activity to one another. Even single-celled organisms can respond to envir They can also coordinate

  7. Improved Distributed Framework for Worm Detection & Throttling in Mobile Peer-to-Peer Networks Muhammad Adeel, Laurissa Tokarchuk , Laurie Cuthbert, Chao-sheng Feng, Zhi-guang Qin

    E-Print Network [OSTI]

    Tokarchuk, Laurissa

    .g. Seti@home [29] and Folding@home [30]). Following P2P success over the wireline networks, 3G/4G vendors

  8. International Human Capital Formation, Brain Drain and Brain

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    systems, individuals' abilities, sunk educational investment costs, government grants, and expected capital formation, brain gain, brain drain, international migration, sunk costs, educational grants

  9. Brain site-specific proteome changes in aging-related dementia

    E-Print Network [OSTI]

    Manavalan, Arulmani; Mishra, Manisha; Feng, Lin; Sze, Siu Kwan; Akatsu, Hiroyasu; Heese, Klaus

    2013-01-01T23:59:59.000Z

    our Ingenuity Pathway Analysis (IPA)- based network analysisIngenuity Pathways Analysis (IPA, http://www.ingenuity.com)in the AD brain, we used IPA (http://www.ingenui- ty.com).

  10. Spatiotemporal brain imaging and modeling

    E-Print Network [OSTI]

    Lin, Fa-Hsuan, 1972-

    2004-01-01T23:59:59.000Z

    This thesis integrates hardware development, data analysis, and mathematical modeling to facilitate our understanding of brain cognition. Exploration of these brain mechanisms requires both structural and functional knowledge ...

  11. The Brain, the Broken Brain & the Neural Biology of Language

    E-Print Network [OSTI]

    Collar, Juan I.

    The Brain, the Broken Brain & the Neural Biology of Language Presenter: Steven Small Time & Date.maproom.com )1949 N. Hoyne Café Email list https://cfcpwork.uchicago.edu/mailman/listinfo/cafe #12;The Brain, the Broken Brain & the Neural Biology of Language Presenter: Steven Small Time & Date: 7-9 PM Monday

  12. Brain Networks, Nature and Neighborhoods: Quantifying Internal...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    BuildingRoom: Searle 240A, 5735 S. Ellis Avenue - This talk will be broadcast via Blue Jeans (see new Info below) Location: University of Chicago Speaker(s): Marc G. Berman...

  13. Network Management Network Management

    E-Print Network [OSTI]

    that pertain to the operation, administration, maintenance, and provisioning of networked systems · Operation deals with keeping the network up (and the service provided by the network) · Administration involvesNetwork Management Pag. 1 Network Management Andrea Bianco Telecommunication Network Group Network

  14. Gamma Knife Radiosurgery for Brain Metastases From Primary Breast Cancer

    SciTech Connect (OSTI)

    Kased, Norbert, E-mail: Norbert.Kased@ucsf.ed [Department of Radiation Oncology, University of California, San Francisco, School of Medicine, San Francisco, CA (United States); Binder, Devin K. [Department of Neurological Surgery, University of California, San Francisco, School of Medicine, San Francisco, CA (United States); McDermott, Michael W. [Department of Radiation Oncology, University of California, San Francisco, School of Medicine, San Francisco, CA (United States); Department of Neurological Surgery, University of California, San Francisco, School of Medicine, San Francisco, CA (United States); Nakamura, Jean L.; Huang, Kim [Department of Radiation Oncology, University of California, San Francisco, School of Medicine, San Francisco, CA (United States); Berger, Mitchel S. [Department of Neurological Surgery, University of California, San Francisco, School of Medicine, San Francisco, CA (United States); Wara, William M.; Sneed, Penny K. [Department of Radiation Oncology, University of California, San Francisco, School of Medicine, San Francisco, CA (United States)

    2009-11-15T23:59:59.000Z

    Purpose: The relative roles of stereotactic radiosurgery (SRS) vs. whole brain radiotherapy (WBRT) in the treatment of patients with brain metastases from breast cancer remain undefined. In this study, we reviewed our experience with these patients. Materials and Methods: We retrospectively reviewed all patients treated between 1991 and 2005 with Gamma Knife SRS for brain metastases from breast cancer. The actuarial survival and freedom from progression endpoints were calculated using the Kaplan-Meier method. Results: Between 1991 and 2005, 176 patients underwent SRS for brain metastases from breast cancer. The median survival time was 16.0 months for 95 newly diagnosed patients and 11.7 months for 81 patients with recurrent brain metastases. In the newly diagnosed patients, omission of upfront WBRT did not significantly affect the MST (p = .20), brain freedom from progression (p = .75), or freedom from new brain metastases (p = .83). Longer survival was associated with age <50 years, Karnofsky performance score >=70, primary tumor control, estrogen receptor positivity, and Her2/neu overexpression. No association was found between the number of treated brain metastases and the survival time. Conclusion: We have described prognostic factors for breast cancer patients treated with SRS for newly diagnosed or recurrent brain metastases. Most patient subsets had a median survival time of >=11 months. Unexpectedly, upfront WBRT did not appear to improve brain freedom from progression, and a larger number of brain metastases was not associated with a shorter survival time. Breast cancer might be distinct from other primary sites in terms of prognostic factors and the roles of WBRT and SRS for brain metastases.

  15. amacrine cell network: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    but also helps improve the QoS of the core network and saves the carriers' OPEX and CAPEX on their core networks. Ouyang, Ye; 10.5121ijngn.2010.2105 2010-01-01 64 The...

  16. E-Print Network 3.0 - adults randomized controlled Sample Search...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    networks model of control in ... Source: Gabrieli, John - Department of Brain and Cognitive Science, Massachusetts Institute of Technology (MIT) Collection: Biology and...

  17. E-Print Network 3.0 - acupuncture suppresses morphine Sample...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    morphine Page: << < 1 2 3 4 5 > >> 1 Investigation of the large-scale functional brain networks modulated by acupuncture Summary: microinjection of naloxone on acupuncture-...

  18. Children's Brain Development Benefits from Longer Gestation

    E-Print Network [OSTI]

    2011-01-01T23:59:59.000Z

    Mapping of the Human Brain. NeuroImage, Sendai, Japan.2005). Regional deficits in brain volume in schizophrenia: areso- nance imaging of brain development in premature and

  19. Genomic mosaicism in the human brain

    E-Print Network [OSTI]

    Westra, Jurjen Willem

    2008-01-01T23:59:59.000Z

    Zlokovic BV (2008) The blood-brain barrier in health andmosaicism in the human brain ………………………………………. Chapter Threethe Alzheimer’s disease brain ………………………………. Chapter Five DNA

  20. MR imaging of the fetal brain

    E-Print Network [OSTI]

    Glenn, Orit A.

    2010-01-01T23:59:59.000Z

    development of the fetal brain by MRI. Semin Perinatol 33:determination in normal fetal brain: a prenatal MR imagingin intrauterine fetal brain development. In: Abstracts of

  1. Research Network E-Mobility Research Network

    E-Print Network [OSTI]

    Berlin,Technische Universität

    -Mobility Research Network Energy Storage Drive Train Vehicle System Technology (Electrics & Electronics) Materials Chair: ELECTRICAL DRIVES 1. Energy Efficient Electric Drives Improvement of low load efficiency School of Process Science School of Electrical Engineering and Computer Science School of Mechanical

  2. Shorter-Course Whole-Brain Radiotherapy for Brain Metastases in Elderly Patients

    SciTech Connect (OSTI)

    Rades, Dirk, E-mail: rades.dirk@gmx.net [Department of Radiation Oncology, University Hospital Schleswig-Holstein, Lubeck (Germany); Department of Radiation Oncology, University Hospital Hamburg-Eppendorf, Hamburg (Germany); Evers, Jasmin N. [Department of Radiation Oncology, University Hospital Schleswig-Holstein, Lubeck (Germany); Veninga, Theo [Department of Radiotherapy, Dr. Bernard Verbeeten Institute, Tilburg (Netherlands); Stalpers, Lukas J.A. [Department of Radiotherapy, Academic Medical Center, Amsterdam (Netherlands); Lohynska, Radka [Department of Radiation Oncology, University Hospital, Prague (Czech Republic); Schild, Steven E. [Department of Radiation Oncology, Mayo Clinic Scottsdale, Arizona (United States)

    2011-11-15T23:59:59.000Z

    Purpose: Many patients with brain metastases receive whole-brain radiotherapy (WBRT) alone. Using 10 Multiplication-Sign 3 Gy in 2 weeks is the standard regimen in most centers. Regarding the extraordinarily poor survival prognosis of elderly patients with multiple brain metastases, a shorter WBRT regimen would be preferable. This study compared 10 Multiplication-Sign 3 Gy with 5 Multiplication-Sign 4 Gy in elderly patients ({>=}65 years). Methods and Materials: Data from 455 elderly patients who received WBRT alone for brain metastases were retrospectively analyzed. Survival and local (= intracerebral) control of 293 patients receiving 10 Multiplication-Sign 3 Gy were compared with 162 patients receiving 5 Multiplication-Sign 4 Gy. Eight additional potential prognostic factors were investigated including age, gender, Karnofsky performance score (KPS), primary tumor, number of brain metastases, interval from tumor diagnosis to WBRT, extracerebral metastases, and recursive partitioning analysis (RPA) class. Results: The 6-month overall survival rates were 29% after 5 Multiplication-Sign 4 Gy and 21% after 10 Multiplication-Sign 3 Gy (p = 0.020). The 6-month local control rates were 12% and 10%, respectively (p = 0.32). On multivariate analysis, improved overall survival was associated with KPS {>=} 70 (p < 0.001), only one to three brain metastases (p = 0.029), no extracerebral metastasis (p = 0.012), and lower RPA class (p < 0.001). Improved local control was associated with KPS {>=} 70 (p < 0.001), breast cancer (p = 0.029), and lower RPA class (p < 0.001). Conclusions: Shorter-course WBRT with 5 Multiplication-Sign 4 Gy was not inferior to 10 Multiplication-Sign 3 Gy with respect to overall survival or local control in elderly patients. 5 Multiplication-Sign 4 Gy appears preferable for the majority of these patients.

  3. Brain Energy Metabolism During Experimental Neonatal Seizures

    E-Print Network [OSTI]

    Wasterlain, Claude G.; Thompson, Kerry W.; Suchomelova, Lucie; Niquet, Jerome

    2010-01-01T23:59:59.000Z

    premature or term neonate, brain ATP concentrations measuredreversible energy loss in the hypoxic immature rat brain.Brain Res Dev Brain Res 73(1):99–105 20. King LJ, Lowry OH,

  4. for the brain SPRING 2012

    E-Print Network [OSTI]

    Malinnikova, Eugenia

    Plug-ins for the brain SPRING · 2012 NATURE'S SOLARCELLS Learning from diatoms · 28 HANNIBAL'S HEAD

  5. Complex Systems and Brain Sciences

    E-Print Network [OSTI]

    Fernandez, Eduardo

    Center for Complex Systems and Brain Sciences Charles E. Schmidt College of Science www.ccs.fau.edu #12;Center for Complex Systems and Brain Sciences Our Mission The mission of the Center for Complex Systems and Brain Sciences is to understand the principles and mechanisms underlying complex behavior

  6. Final Report on LDRD project 130784 : functional brain imaging by tunable multi-spectral Event-Related Optical Signal (EROS).

    SciTech Connect (OSTI)

    Speed, Ann Elizabeth; Spahn, Olga Blum; Hsu, Alan Yuan-Chun

    2009-09-01T23:59:59.000Z

    Functional brain imaging is of great interest for understanding correlations between specific cognitive processes and underlying neural activity. This understanding can provide the foundation for developing enhanced human-machine interfaces, decision aides, and enhanced cognition at the physiological level. The functional near infrared spectroscopy (fNIRS) based event-related optical signal (EROS) technique can provide direct, high-fidelity measures of temporal and spatial characteristics of neural networks underlying cognitive behavior. However, current EROS systems are hampered by poor signal-to-noise-ratio (SNR) and depth of measure, limiting areas of the brain and associated cognitive processes that can be investigated. We propose to investigate a flexible, tunable, multi-spectral fNIRS EROS system which will provide up to 10x greater SNR as well as improved spatial and temporal resolution through significant improvements in electronics, optoelectronics and optics, as well as contribute to the physiological foundation of higher-order cognitive processes and provide the technical foundation for miniaturized portable neuroimaging systems.

  7. VASCULAR NETWORK SEGMENTATION: AN UNSUPERVISED APPROACH Xavier Descombes1

    E-Print Network [OSTI]

    for segmenting vascular network into pathological and normal regions from considering their micro-vessel 3D- esis testing. Results are presented on 3D micro-tomographic images of the brain micro-vascular network for the systematic 3D analysis of supra- cellular structures such as micro-vascular networks [1]. Since the diameters

  8. anatomical lymphatic mapping: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    differ between Aitken, Stuart 3 A simple way to improve anatomical mapping of functional brain imaging Nicolas Villain, MSc1 Physics Websites Summary: , Caen, France Running head:...

  9. Google matrix analysis of directed networks

    E-Print Network [OSTI]

    Leonardo Ermann; Klaus M. Frahm; Dima L. Shepelyansky

    2014-09-01T23:59:59.000Z

    In past ten years, modern societies developed enormous communication and social networks. Their classification and information retrieval processing become a formidable task for the society. Due to the rapid growth of World Wide Web, social and communication networks, new mathematical methods have been invented to characterize the properties of these networks on a more detailed and precise level. Various search engines are essentially using such methods. It is highly important to develop new tools to classify and rank enormous amount of network information in a way adapted to internal network structures and characteristics. This review describes the Google matrix analysis of directed complex networks demonstrating its efficiency on various examples including World Wide Web, Wikipedia, software architecture, world trade, social and citation networks, brain neural networks, DNA sequences and Ulam networks. The analytical and numerical matrix methods used in this analysis originate from the fields of Markov chains, quantum chaos and Random Matrix theory.

  10. Design and implementation of a distributed virtual machine for networked computers

    E-Print Network [OSTI]

    Mohri, Mehryar

    . This partitioning of system functionality reduces resource requirements on network clients, improves site security

  11. Quantitative Brain Electrical Activity in the Initial Screening of Mild Traumatic Brain Injuries

    E-Print Network [OSTI]

    O'Neil, Brian; Prichep, Leslie S.; Naunheim, Roseanne; Chabot, Robert

    2012-01-01T23:59:59.000Z

    investigation into mild brain injury and discriminantfrequency bands (32-64 Hz). Brain Inj. 24. Thakor NV, Tongfor accuracy traumatic brain injury. J Neuropsychiatry Clin

  12. Problemstellung "Brain Drain" bzw. "Brain Gain" in der Region Niederösterreich-Mitte.

    E-Print Network [OSTI]

    Binder, Paul

    2012-01-01T23:59:59.000Z

    ??Die vorliegende Diplomarbeit befasst sich mit dem Thema des „Brain Drain“ und „Brain Gain“ in der Region Niederösterreich Mitte. Unter "Brain Drain" versteht man die… (more)

  13. The bistable brain: a neuronal model with symbiotic interactions

    E-Print Network [OSTI]

    Ricardo Lopez-Ruiz; Daniele Fournier-Prunaret

    2012-08-01T23:59:59.000Z

    In general, the behavior of large and complex aggregates of elementary components can not be understood nor extrapolated from the properties of a few components. The brain is a good example of this type of networked systems where some patterns of behavior are observed independently of the topology and of the number of coupled units. Following this insight, we have studied the dynamics of different aggregates of logistic maps according to a particular {\\it symbiotic} coupling scheme that imitates the neuronal excitation coupling. All these aggregates show some common dynamical properties, concretely a bistable behavior that is reported here with a certain detail. Thus, the qualitative relationship with neural systems is suggested through a naive model of many of such networked logistic maps whose behavior mimics the waking-sleeping bistability displayed by brain systems. Due to its relevance, some regions of multistability are determined and sketched for all these logistic models.

  14. Automatic Seedpoint Selection and Tracing of Microstructures in the Knife-Edge Scanning Microscope Mouse Brain Data Set

    E-Print Network [OSTI]

    Kim, Dongkun

    2011-10-21T23:59:59.000Z

    in neuronal structures [4]. Research about the neuronal structure can also help understand how the neuronal structure processes information. In order to investigate neuronal structures, researchers at the Brain Network Lab (BNL) at Texas A&M University... by re- searchers at the Brain Network Laboratory (BNL) at Texas A&M University (TAMU) to scan entire mouse brains at a sub-micrometer resolution (down to 300 nm). This instrument consists of a high-precision stage, a diamond knife and an illuminator...

  15. Network Chimera Network Chimera

    E-Print Network [OSTI]

    Network Chimera Network Chimera Objective Chimera aims to understand how the network properties enough with limited resources. The Chimera team is cross-disciplinary, and includes computer scientists Impact The original hypothesis of Chimera was that a physical network could be reduced to a graph

  16. EFFECTS OF EXERCISE TRAINING ON BRAIN BIOENERGETICS: LACTATE AS A KEY MEDIATOR

    E-Print Network [OSTI]

    E, Lezi

    2013-12-31T23:59:59.000Z

    Exercise has been given credits for promoting health in general. Research show various exercise-induced benefits for brain in both humans and rodents, including improvement of cognitive function, increase of adult neurogenesis, ...

  17. Transcranial LED therapy for cognitive dysfunction in chronic, mild traumatic brain injury: Two case reports

    E-Print Network [OSTI]

    Hamblin, Michael R.

    Two chronic, traumatic brain injury (TBI) cases are presented, where cognitive function improved following treatment with transcranial light emitting diodes (LEDs). At age 59, P1 had closed-head injury from a motor vehicle ...

  18. Does Brain-Training Make You Smarter? Evidence from Working Memory Training Studies

    E-Print Network [OSTI]

    Rose, Michael R.

    Does Brain-Training Make You Smarter? Evidence from Working Memory Training Studies Guest Lecture by Claudia von Bastian Psychology & Neuroscience be improved through cognitive training? This question is still highly controversial

  19. Quantum features of consciousness, computers and brain

    E-Print Network [OSTI]

    Michael B. Mensky

    2009-10-22T23:59:59.000Z

    Many people believe that mysterious phenomenon of consciousness may be connected with quantum features of our world. The present author proposed so-called Extended Everett's Concept (EEC) that allowed to explain consciousness and super-consciousness (intuitive knowledge). Brain, according to EEC, is an interface between consciousness and super-consciousness on the one part and body on the other part. Relations between all these components of the human cognitive system are analyzed in the framework of EEC. It is concluded that technical devices improving usage of super-consciousness (intuition) may exist.

  20. Interference Effects in the Brain

    E-Print Network [OSTI]

    Jerzy Szwed

    2008-03-14T23:59:59.000Z

    Interference effects are the most spectacular manifestation of the wave nature of phenomena. This note proposes a systematic search for such effects in the brain.

  1. azidothymidine azt treatment: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    were investigated using murine and (more) Lee, Sung-Hack 2008-01-01 6 Classification of brain compartments and head injury lesions by neural networks applied to magnetic...

  2. Vascular pathology in the aged human brain

    E-Print Network [OSTI]

    Grinberg, Lea Tenenholz; Thal, Dietmar Rudolf

    2010-01-01T23:59:59.000Z

    vascular pathology, and the AD brain. Neurology 65: 259–265brospinal ?uid from the rat brain. Acta Neuropathol (Berl)and Alzheimer’s disease in the brains of elderly individuals

  3. Brain MRI Classification using the Expectation Maximization

    E-Print Network [OSTI]

    Chen, Tsuhan

    Brain MRI Classification using the Expectation Maximization made a brain magnetic resonance image (MRI) classification algorithm that uses a twostage applied to a set of normal brain MR images for further testing. We accomplished a working

  4. Brain Receptor Structures Key to Future Therapeutics

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Brain Receptor Structures Key to Future Therapeutics Brain Receptor Structures Key to Future Therapeutics Print Wednesday, 28 January 2015 00:00 With an aging population in...

  5. Rapid brain scanning radiopharmaceutical

    DOE Patents [OSTI]

    Sargent, III, Thornton W. (Berkeley, CA); Shulgin, Alexander T. (Lafayette, CA); Mathis, Chester A. (Oakland, CA)

    1987-01-01T23:59:59.000Z

    A method for detecting the blood flow in animals, particularly in the brain, is provided wherein a detectable amount of a novel radioactive compound of the formula I is administered to one animal: ##STR1## wherein R.sub.1 and R.sub.2 are independently alkyl of 1 to 6 carbon atoms or benzyl; R.sub.3 is alkyl of 1 to 6 carbon atoms, benzyl, cyclopropylalkyl of 4 to 6 carbon atoms, or cyanoalkyl of 2 to 6 carbon atoms; R.sub.4 is hydrogen, benzyl or alkyl of 1 to 6 carbon atoms; with the provisos that R.sub.4 is not isopropyl and when R.sub.4 is methyl, R.sub.3 is not benzyl; and X is a radioactive halogen.

  6. Rapid brain scanning radiopharmaceutical

    DOE Patents [OSTI]

    Sargent, T.W. III; Shulgin, A.T.; Mathis, C.A.

    1987-03-03T23:59:59.000Z

    A method for detecting the blood flow in animals, particularly in the brain, is provided wherein a detectable amount of a novel radioactive compound of the formula 1 is administered to one animal: as given in figure in patent wherein R[sub 1] and R[sub 2] are independently alkyl of 1 to 6 carbon atoms or benzyl; R[sub 3] is alkyl of 1 to 6 carbon atoms, benzyl, cyclopropylalkyl of 4 to 6 carbon atoms, or cyanoalkyl of 2 to 6 carbon atoms; R[sub 4] is hydrogen, benzyl or alkyl of 1 to 6 carbon atoms; with the provisos that R[sub 4] is not isopropyl and when R[sub 4] is methyl, R[sub 3] is not benzyl; and X is a radioactive halogen. 2 figs.

  7. Cross-linked structure of network evolution

    SciTech Connect (OSTI)

    Bassett, Danielle S., E-mail: dsb@seas.upenn.edu [Department of Bioengineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104 (United States); Department of Physics, University of California, Santa Barbara, California 93106 (United States); Sage Center for the Study of the Mind, University of California, Santa Barbara, California 93106 (United States); Wymbs, Nicholas F.; Grafton, Scott T. [Department of Psychology and UCSB Brain Imaging Center, University of California, Santa Barbara, California 93106 (United States)] [Department of Psychology and UCSB Brain Imaging Center, University of California, Santa Barbara, California 93106 (United States); Porter, Mason A. [Oxford Centre for Industrial and Applied Mathematics, Mathematical Institute, University of Oxford, Oxford OX2 6GG (United Kingdom) [Oxford Centre for Industrial and Applied Mathematics, Mathematical Institute, University of Oxford, Oxford OX2 6GG (United Kingdom); CABDyN Complexity Centre, University of Oxford, Oxford, OX1 1HP (United Kingdom); Mucha, Peter J. [Carolina Center for Interdisciplinary Applied Mathematics, Department of Mathematics, University of North Carolina, Chapel Hill, North Carolina 27599 (United States) [Carolina Center for Interdisciplinary Applied Mathematics, Department of Mathematics, University of North Carolina, Chapel Hill, North Carolina 27599 (United States); Department of Applied Physical Sciences, University of North Carolina, Chapel Hill, North Carolina 27599 (United States)

    2014-03-15T23:59:59.000Z

    We study the temporal co-variation of network co-evolution via the cross-link structure of networks, for which we take advantage of the formalism of hypergraphs to map cross-link structures back to network nodes. We investigate two sets of temporal network data in detail. In a network of coupled nonlinear oscillators, hyperedges that consist of network edges with temporally co-varying weights uncover the driving co-evolution patterns of edge weight dynamics both within and between oscillator communities. In the human brain, networks that represent temporal changes in brain activity during learning exhibit early co-evolution that then settles down with practice. Subsequent decreases in hyperedge size are consistent with emergence of an autonomous subgraph whose dynamics no longer depends on other parts of the network. Our results on real and synthetic networks give a poignant demonstration of the ability of cross-link structure to uncover unexpected co-evolution attributes in both real and synthetic dynamical systems. This, in turn, illustrates the utility of analyzing cross-links for investigating the structure of temporal networks.

  8. Applications in MPC and Network Flows

    E-Print Network [OSTI]

    2013-05-08T23:59:59.000Z

    This allows for improvement in communication-efficiency. We apply our algorithm to model predictive control (MPC) and to network flow problems and show, ...

  9. February 8, 2006 Brain Science Institute

    E-Print Network [OSTI]

    Kazama, Hokto

    February 8, 2006 Brain Science Institute Critical Period Mechanisms Research Group Laboratory the Brain Pliable Mammals have "pliable" brain functions such as "learning", "memory", "recognition", "emotion" and "decision-making". These higher-order brain functions are apparently maintained by means

  10. BU BRAIN Self Service GRADING PROCEDURES

    E-Print Network [OSTI]

    Suzuki, Masatsugu

    1 BU BRAIN Self Service GRADING PROCEDURES FOR FACULTY Updated May 2014/PD #12;2 Table of Contents BRAIN Self Service icon on left side of page: #12;4 Entering Grades: Once in BU BRAIN Self Service, go BRAIN Self Service; Registered ­ student registered through the department). Grade: Student's grade

  11. Whole-Brain Thinking in Systems Architecting

    E-Print Network [OSTI]

    Udwadia, Firdaus E.

    Whole-Brain Thinking in Systems Architecting Tony Di Carlo,1, * Behrokh Khoshnevis,2 and Firdaus, University of Southern California, Los Angeles, CA 90089 WHOLE-BRAIN THINKING IN SYSTEMS ARCHITECTING paper explores the role of whole-brain thinking in the context of systems architecting. Brain research

  12. Brain imaging methods used in experimental brain research such as Positron Emission Tomography (PET) and Functional

    E-Print Network [OSTI]

    Mueller, Klaus

    ABSTRACT Brain imaging methods used in experimental brain research such as Positron Emission and are best understood in the context of the underlying 3D brain anatomy. In this paper, we present a novel Brain Mapping, Functional Imaging 1 INTRODUCTION Although the human brain is no longer the black box

  13. BrainPrint : Identifying Subjects by their Brain Christian Wachinger1,2

    E-Print Network [OSTI]

    Golland, Polina

    BrainPrint : Identifying Subjects by their Brain Christian Wachinger1,2 , Polina Golland1 , Martin, Harvard Medical School Abstract. Introducing BrainPrint, a compact and discriminative rep- resentation of anatomical structures in the brain. BrainPrint captures shape information of an ensemble of cortical

  14. A Brain-to-Brain Interface for Real-Time Sharing of Sensorimotor Information

    E-Print Network [OSTI]

    Indiana University

    A Brain-to-Brain Interface for Real-Time Sharing of Sensorimotor Information Miguel Pais-Vieira1 Safra International Institute for Neuroscience of Natal (ELS-IINN), RN 59066-060, Natal, Brazil. A brain-to-brain the brains of two rats. In this BTBI, an ``encoder'' rat performed sensorimotor tasks that required

  15. 5 Minute Brain Teaser Old vs. New Thinking Regarding the Human Brain

    E-Print Network [OSTI]

    5 Minute Brain Teaser Old vs. New Thinking Regarding the Human Brain Please circle the statement out of each pair that reflects the most current thinking regarding the human brain. # Statement 1. A. How a brain develops depends solely on the genes you are born with. B. Brain development depends

  16. Methods for functional brain imaging

    E-Print Network [OSTI]

    Witzel, Thomas, Ph. D. Massachusetts Institute of Technology

    2011-01-01T23:59:59.000Z

    Magnetic resonance imaging (MRI) has demonstrated the potential for non-invasive mapping of structure and function (fMRI) in the human brain. In this thesis, we propose a series of methodological developments towards ...

  17. Developmental Plasticity in Cartesian Genetic Programming Artificial Neural Networks

    E-Print Network [OSTI]

    Fernandez, Thomas

    Developmental Plasticity in Cartesian Genetic Programming Artificial Neural Networks Maryam Mahsal developmental plasticity in Artificial Neural Networks using Carte- sian Genetic Programming. This is inspired by developmental plasticity that exists in the biological brain allowing it to adapt to a changing environment

  18. E-Print Network 3.0 - adolescence induces cognitive Sample Search...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    > >> 1 DEVELOPMENTAL SCIENCE REVIEW Executive functions in adolescence: inferences from brain and Summary: Despite the advances in understanding cognitive improvements in executive...

  19. Deadline-aware Broadcasting in Wireless Networks with Network Coding

    E-Print Network [OSTI]

    Wu, Jie

    on time. Index Terms--Broadcasting, broadcast tree, network coding, energy efficiency, deadline, NP 19122 Department of Electrical & Computer Engineering, New Jersey Institute of Technology, Newark, NJ of transmissions, which improves the energy efficiency of wireless networks. On the other hand, delaying

  20. Dual-headed SPECT for awake animal brain imaging

    SciTech Connect (OSTI)

    S. Lee, B. Kross, D. Weisenberger, J. McKisson, J.S. Goddard, J.S. Baba, M.S. Smith

    2012-02-01T23:59:59.000Z

    Motion-corrected awake animal imaging is needed for normal-state investigations of models of neurological disease and brain activity. The awake animal brain SPECT/CT system, AwakeSPECT at Johns Hopkins University has in the past used a single gamma camera for imaging. Enhancements have been made by adding a pinhole collimator to the second gamma camera at the opposite side which has been previously equipped parallel hole collimator. Geometry calibration was performed using a custom built quality control phantom containing three Co-57 point sources and applied to the tomographic reconstruction code. Hot-rod phantom scans with Tc-99m were performed to test sensitivity and resolution improvements. The reconstruction results show significant resolution and sensitivity improvements.

  1. Devastating Brain Injuries: Assessment and Management, Part I: Overview of Brain Death

    E-Print Network [OSTI]

    Dixon, Tara D; Malinoski, Darren

    2009-01-01T23:59:59.000Z

    349:667-674. 11. Capron AM. Brain death – well settled yetWijdicks EFM. The diagnosis of brain death. NEJM. 2001; 344:AA. Organ preservation in a brain dead patient: information

  2. How brain images reveal cognition : an ethnographic study of meaning-making in brain mapping practice

    E-Print Network [OSTI]

    Ala?, Morana

    2006-01-01T23:59:59.000Z

    cortical surface’, Human Brain Mapping, Volume 8, pp. 272-attention affects brain activity in Proc.Natl.Acad.Sci, USA,Atlas of the Human Brain, Stuttgart: Thieme. TOOTELL,

  3. Brain Imaging with Positron Emission Tomography: Quantification and Biomedical Applications in Alzheimer's Disease and Brain Tumors

    E-Print Network [OSTI]

    Wardak, Mirwais

    2013-01-01T23:59:59.000Z

    AB, Elson LM. The human brain coloring book. 1st ed. New21. Toga AW, Mazziotta JC. Brain mapping : the systems. SanSR, Phelps ME. Imaging Brain Function with Positron Emission

  4. The Maximum Stable Broadcast Throughput for Wireless Line Networks with Network Coding and

    E-Print Network [OSTI]

    Kuzmanovic, Aleksandar

    Engineering and Computer Science, Northwestern University, Evanston, IL 60208, USA Intelligent Automation Inc cluster size. We show that network coding improves the stable rate over plain retransmissions

  5. Parallel multiscale simulations of a brain aneurysm

    SciTech Connect (OSTI)

    Grinberg, Leopold [Division of Applied Mathematics, Brown University, Providence, RI 02912 (United States)] [Division of Applied Mathematics, Brown University, Providence, RI 02912 (United States); Fedosov, Dmitry A. [Institute of Complex Systems and Institute for Advanced Simulation, Forschungszentrum Jülich, Jülich 52425 (Germany)] [Institute of Complex Systems and Institute for Advanced Simulation, Forschungszentrum Jülich, Jülich 52425 (Germany); Karniadakis, George Em, E-mail: george_karniadakis@brown.edu [Division of Applied Mathematics, Brown University, Providence, RI 02912 (United States)

    2013-07-01T23:59:59.000Z

    Cardiovascular pathologies, such as a brain aneurysm, are affected by the global blood circulation as well as by the local microrheology. Hence, developing computational models for such cases requires the coupling of disparate spatial and temporal scales often governed by diverse mathematical descriptions, e.g., by partial differential equations (continuum) and ordinary differential equations for discrete particles (atomistic). However, interfacing atomistic-based with continuum-based domain discretizations is a challenging problem that requires both mathematical and computational advances. We present here a hybrid methodology that enabled us to perform the first multiscale simulations of platelet depositions on the wall of a brain aneurysm. The large scale flow features in the intracranial network are accurately resolved by using the high-order spectral element Navier–Stokes solver N??T?r. The blood rheology inside the aneurysm is modeled using a coarse-grained stochastic molecular dynamics approach (the dissipative particle dynamics method) implemented in the parallel code LAMMPS. The continuum and atomistic domains overlap with interface conditions provided by effective forces computed adaptively to ensure continuity of states across the interface boundary. A two-way interaction is allowed with the time-evolving boundary of the (deposited) platelet clusters tracked by an immersed boundary method. The corresponding heterogeneous solvers (N??T?r and LAMMPS) are linked together by a computational multilevel message passing interface that facilitates modularity and high parallel efficiency. Results of multiscale simulations of clot formation inside the aneurysm in a patient-specific arterial tree are presented. We also discuss the computational challenges involved and present scalability results of our coupled solver on up to 300 K computer processors. Validation of such coupled atomistic-continuum models is a main open issue that has to be addressed in future work.

  6. Microglial and neuronal abnormalities in the autistic brain

    E-Print Network [OSTI]

    Morgan, John T.

    2009-01-01T23:59:59.000Z

    G. , Dager, S. R. , 2002. Brain sructural abnormalities inwith autistic behavior. Brain Behav Immun 7, 97- Sparks, B.G. , Dager, S. R. , 2002. Brain sructural abnormalities in

  7. Acquisition and Mining of the Whole Mouse Brain Microstructure

    E-Print Network [OSTI]

    Kwon, Jae-Rock

    2010-10-12T23:59:59.000Z

    joined the Brain Networks Laboratory (BNL) and his patient and thoughtful advice led me to the point where I am now. I particularly want to thank him for letting me join the laboratory and have this wonderful opportunity. Dr. Ricardo Gutierrez-Osuna has... the pleasure of working. Finally, I would like to thank the late Dr. Bruce H. McCormick whose vision and unstoppable drive for research have been greatly in uential to me. All achievements in BNL would not have been possible without his dream. He...

  8. Improving Electric Load Forecasts Using Network Committees

    E-Print Network [OSTI]

    Abdel-Aal, Radwan E.

    , King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia Address for corresponding author: Dr. R. E. Abdel-Aal P. O. Box 1759 KFUPM Dhahran 31261 Saudi Arabia e-mail: radwan load and weather data at power utilities has encouraged the use of data-based machine learning modeling

  9. Improved Electrical Contact For Dowhhole Drilling Networks

    DOE Patents [OSTI]

    Hall, David R. (Provo, UT); Hall, Jr., H. Tracy (Provo, UT); Pixton, David S. (Lehi, UT); Dahlgren, Scott (Provo, UT); Fox, Joe (Spanish Fork, UT); Sneddon, Cameron (Provo, UT)

    2005-08-16T23:59:59.000Z

    An electrical contact system for transmitting information across tool joints while minimizing signal reflections that occur at the tool joints includes a first electrical contact comprising an annular resilient material. An annular conductor is embedded within the annular resilient material and has a surface exposed from the annular resilient material. A second electrical contact is provided that is substantially equal to the first electrical contact. Likewise, the second electrical contact has an annular resilient material and an annular conductor. The two electrical contacts configured to contact one another such that the annular conductors of each come into physical contact. The annular resilient materials of each electrical contact each have dielectric characteristics and dimensions that are adjusted to provide desired impedance to the electrical contacts.

  10. Improving network routing performance in dynamic environments

    E-Print Network [OSTI]

    Liu, Yong

    2007-04-25T23:59:59.000Z

    for link quality predictability study . . . . . . . . . . . . . 107 79 Example of Internet path quality: average utilization of 40% . . . . . 108 80 Example of Internet path quality: average utilization of 60% . . . . . 109 81 Example of Internet path... quality: average utilization of 80% . . . . . 109 xvii FIGURE Page 82 Internet path quality differences: average utilization of 60% . . . . . 110 83 Autocorrelation functions of link quality metrics: average utiliza- tion of 40...

  11. Corps Improvement

    E-Print Network [OSTI]

    Wythe, Kathy

    2007-01-01T23:59:59.000Z

    to mitigate environmental impacts of the proj- ect. The Corps? Fort Worth District and the City of Dallas are using an innovative approach to return floodplain value to the Trinity River, while improving flood damage reduction. Big Fossil Creek Watershed... The Big Fossil Watershed Study will address flood damage reduction, while identifying associated water quality, ecosystem restoration and recreational opportunities within the basin. The watershed is located in northern Tarrant County, encompasses 73...

  12. A Note on Boltzmann Brains

    E-Print Network [OSTI]

    Yasunori Nomura

    2015-03-02T23:59:59.000Z

    Understanding the observed arrow of time is equivalent, under general assumptions, to explaining why Boltzmann brains do not overwhelm ordinary observers. It is usually thought that this provides a condition on the decay rate of every cosmologically accessible de Sitter vacuum, and that this condition is determined by the production rate of Boltzmann brains calculated using semiclassical theory built on each such vacuum. We argue, based on a recently developed picture of microscopic quantum gravitational degrees of freedom, that this thinking needs to be modified. In particular, depending on the structure of the fundamental theory, the decay rate of a de Sitter vacuum may not have to satisfy any condition except for the one imposed by the Poincare recurrence. The framework discussed here also addresses the question of whether a Minkowski vacuum may produce Boltzmann brains.

  13. BrainMap `95 workshop

    SciTech Connect (OSTI)

    NONE

    1995-12-31T23:59:59.000Z

    The fourth annual BrainMap workshop was held at La Mansion del Rio Hotel in San Antonio December 3--4, 1995. The conference title was ``Human Brain Mapping and Modeling.`` The meeting was attended by 137 registered participants and 30 observers from 82 institutions representing 12 countries. The meeting focused on the technical issues associated with brain mapping and modeling. A total of 23 papers were presented covering the following topics: spatial normalization and registration; functional image analysis; metanalysis and modeling; and new horizons in biological databases. The full program with abstracts was available on the Research Imaging Center`s web site. A book will be published by John Wiley and Sons prior to the end of 1998.

  14. A Note on Boltzmann Brains

    E-Print Network [OSTI]

    Yasunori Nomura

    2015-02-18T23:59:59.000Z

    Understanding the observed arrow of time is equivalent, under general assumptions, to explaining why Boltzmann brains do not overwhelm ordinary observers. It is usually thought that this provides a condition on the decay rate of every cosmologically accessible de Sitter vacuum, and that this condition is determined by the production rate of Boltzmann brains calculated using semiclassical theory built on each such vacuum. We argue, based on a recently developed picture of microscopic quantum gravitational degrees of freedom, that this thinking needs to be modified. In particular, depending on the structure of the fundamental theory, the decay rate of a de Sitter vacuum may not have to satisfy any condition except possibly the one imposed by the Poincare recurrence. The framework discussed here also addresses the question of whether a Minkowski vacuum may produce Boltzmann brains.

  15. Overcoming the blood-brain barrier to taxane delivery for brain tumors and neurodegenerative diseases and brain tumors

    E-Print Network [OSTI]

    Rice, Antonie; Michaelis, Mary L.; Georg, Gunda I.; Liu, Yanbin; Turunen, Brandon; Audus, Kenneth L.

    2003-01-01T23:59:59.000Z

    vessels. After the perfusion, the rat was decapitated and the brain removed for sampling of various regions. The brain tissue was digested in Solvable for 24 hrs and the radioactivity quantified via liquid scintillation spectrometry. The capillary...

  16. Network Programming 1 Computer Networks

    E-Print Network [OSTI]

    Verschelde, Jan

    Network Programming 1 Computer Networks client/server architecture, protocols, and sockets 2;Network Programming 1 Computer Networks client/server architecture, protocols, and sockets 2 Network;client/server architecture Client/server architecture defines the communication between two computers

  17. E-Print Network 3.0 - acupoint electricity stimulation Sample...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    stimulation of the vision-related acupoint GB 37? J Magn Reson Imaging 2002;15:227-32. Harris R... brain network activation and analgesic effect induced by low vs. high frequency...

  18. Mind, Brain and Education as a Framework for Curricular Reform /

    E-Print Network [OSTI]

    Larrison, Abigail L.

    2013-01-01T23:59:59.000Z

    Eds. ). (2008). The educated brain. Cambridge: CambridgeM. M. & Gentile, D. A. (2011). Brains on video games. NatureA first course in mind, brain, and education. Mind, Brain, &

  19. perfSONAR Workshop Helps Network Engineers Improve Network Performance...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    at ESnet, were the featured speakers at "perfSONAR Deployment Best Practices, Architecture, and Moving the Needle," organized by ESnet and Internet2 and hosted Jan. 21-22 by...

  20. Brain Research and DLM: An overview

    E-Print Network [OSTI]

    Irby, Beverly J.; Lara-Alecio, Rafael

    2010-10-22T23:59:59.000Z

    Brain Research and DLM: An Overview Beverly J. Irby, Ed.D. Professor and Chair Sam Houston State University Rafael Lara-Alecio, Ph.D. Professor and Director Texas A&M University November 4, 2005 Basic Brain Information ? The brain research... us to ?see how mental functions map onto the brain structures? (Bruer, 1997, p. 4). Neuro- science and Education ? There are three well-established findings in developmental neurobiology: ? 1. Starting at infancy and continuing into later...

  1. Microsystem process networks

    DOE Patents [OSTI]

    Wegeng, Robert S. (Richland, WA); TeGrotenhuis, Ward E. (Kennewick, WA); Whyatt, Greg A. (West Richland, WA)

    2007-09-18T23:59:59.000Z

    Various aspects and applications of microsystem process networks are described. The design of many types of Microsystems can be improved by ortho-cascading mass, heat, or other unit process operations. Microsystems having energetically efficient microchannel heat exchangers are also described. Detailed descriptions of numerous design features in microcomponent systems are also provided.

  2. Microsystem process networks

    DOE Patents [OSTI]

    Wegeng, Robert S. (Richland, WA); TeGrotenhuis, Ward E. (Kennewick, WA); Whyatt, Greg A. (West Richland, WA)

    2006-10-24T23:59:59.000Z

    Various aspects and applications of microsystem process networks are described. The design of many types of microsystems can be improved by ortho-cascading mass, heat, or other unit process operations. Microsystems having exergetically efficient microchannel heat exchangers are also described. Detailed descriptions of numerous design features in microcomponent systems are also provided.

  3. Microsystem process networks

    DOE Patents [OSTI]

    Wegeng, Robert S [Richland, WA; TeGrotenhuis, Ward E [Kennewick, WA; Whyatt, Greg A [West Richland, WA

    2010-01-26T23:59:59.000Z

    Various aspects and applications or microsystem process networks are described. The design of many types of microsystems can be improved by ortho-cascading mass, heat, or other unit process operations. Microsystems having energetically efficient microchannel heat exchangers are also described. Detailed descriptions of numerous design features in microcomponent systems are also provided.

  4. Brain-shift aware risk map for Deep Brain Stimulation Planning

    E-Print Network [OSTI]

    Boyer, Edmond

    Brain-shift aware risk map for Deep Brain Stimulation Planning Bilger Alexandre 1 , Essert Caroline / Université de Strasbourg, FRANCE Abstract. In Deep Brain Stimulation surgery, the eciency of the pro- cedure of the placement is dicult due to brain shifts occurring during and after the procedure. We propose an approach

  5. Adaptive Brain-Computer Interface Passive brain-computer interfaces are designed to use

    E-Print Network [OSTI]

    Boetticher, Gary D.

    Adaptive Brain-Computer Interface Abstract Passive brain-computer interfaces are designed to use brain activity as an additional input, allowing the adaptation of the interface in real time according to the user's mental state. While most current brain computer interface research (BCI) is designed for direct

  6. Brain imaging methods used in experimental brain research such as Positron Emission Tomography (PET) and Functional

    E-Print Network [OSTI]

    Mueller, Klaus

    ABSTRACT Brain imaging methods used in experimental brain research such as Positron Emission of methods create statistical parametric maps (SPMs) of the brain on a voxel- basis. In our approach, they are best understood in the context of the underly- ing 3-D brain anatomy. However, despite the power

  7. Playing with Your Brain: Brain-Computer Interfaces and Anton Nijholt

    E-Print Network [OSTI]

    Rajamani, Sriram K.

    Playing with Your Brain: Brain-Computer Interfaces and Games Anton Nijholt University of Twente role of brain-computer interaction in computer games and entertainment computing. The assumption is that brain activity, whether it is consciously controlled and directed by the user or just recorded in order

  8. Neural Plasticity in Human Brain Connectivity: The Effects of Long Term Deep Brain Stimulation of the

    E-Print Network [OSTI]

    Deco, Gustavo

    Neural Plasticity in Human Brain Connectivity: The Effects of Long Term Deep Brain Stimulation of Oxford, Oxford, United Kingdom, 3 Center of Brain and Cognition, Theoretical and Computational are now well established for deep brain stimulation, but little is known about the effects of long

  9. Interspecies Avian Brain Chimeras Reveal That Large Brain Size Differences Are Influenced by Cell

    E-Print Network [OSTI]

    Jarvis, Erich D.

    Interspecies Avian Brain Chimeras Reveal That Large Brain Size Differences Are Influenced by Cell), and harvested the chimeras at later embryonic stages (between 9­12 days of incubation). The donor and host-C, Balaban E, Jarvis ED (2012) Interspecies Avian Brain Chimeras Reveal That Large Brain Size Differences

  10. Words in the brain: lexical determinants of word-induced brain activity

    E-Print Network [OSTI]

    Coulson, Seana

    Words in the brain: lexical determinants of word-induced brain activity Lee Osterhout*, Mark Allen Abstract Many studies have shown that open- and closed-class words elicit different patterns of brain. Introduction Is the brain response to words determined primarily by their linguistic functions

  11. Guest Editorial: Brain/Neuronal-Computer Game Interfaces and Interaction 1. Brain-Computer Games Interaction

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Guest Editorial: Brain/Neuronal-Computer Game Interfaces and Interaction 1. Brain-Computer Games are controlled through brain-computer interface (BCI) technology which requires sophisticated signal processing is a challenge being addressed by many researchers. Producing paradigms for training users to produce brain

  12. Using Brain Weight to Predict Gestation in Mammals Bivariate Fit of Gestation By Brain Weight

    E-Print Network [OSTI]

    Carriquiry, Alicia

    1 Using Brain Weight to Predict Gestation in Mammals Bivariate Fit of Gestation By Brain Weight 0 100 200 300 400 500 Gestation 0 500 1000 1500 BrainWgt Linear Fit (All 50 mammals) Predicted Gestation = 85.248543 + 0.299867 Brain Weight Summary of Fit RSquare 0.372483 RSquare Adj 0.35941 Root Mean

  13. 5 Minute Brain Teaser Old vs. New Thinking Regarding the Human Brain*

    E-Print Network [OSTI]

    5 Minute Brain Teaser Old vs. New Thinking Regarding the Human Brain* Answer Key Answer Statement 1-B Brain development depends on the interplay between the genes you are born with and the experiences of the effects of genes and experiences on brain development. Is it the genetic make-up (nature) of a human

  14. CORTICAL BRAIN SURFACE MAPPING FOR STUDYING PARTIAL VOLUME EFFECTS IN BRAIN FDG PET IMAGES

    E-Print Network [OSTI]

    Thompson, Paul

    CORTICAL BRAIN SURFACE MAPPING FOR STUDYING PARTIAL VOLUME EFFECTS IN BRAIN FDG PET IMAGES Hillary PET images is confounded by tissue atrophy and partial volume effects, especially in patients-based cortical brain surface mapping technique to account for partial volume effects on brain FDG PET images

  15. Children's Conceptions of the Brain 

    E-Print Network [OSTI]

    McColl, Judith

    2012-03-14T23:59:59.000Z

    The present study explored children’s developing conceptions of the brain in order to enhance previous research and to contribute to debates regarding the nature of children’s naďve biological theories. 56 participants aged 5, 7 and 9-years-old were...

  16. aml1 core site: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    but also helps improve the QoS of the core network and saves the carriers' OPEX and CAPEX on their core networks. Ouyang, Ye; 10.5121ijngn.2010.2105 2010-01-01 6...

  17. application site performance: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    but also helps improve the QoS of the core network and saves the carriers' OPEX and CAPEX on their core networks. Ouyang, Ye; 10.5121ijngn.2010.2105 2010-01-01 79 Predictive...

  18. Bernard J. Baars How Brain Reveals Mind

    E-Print Network [OSTI]

    Memphis, University of

    Bernard J. Baars How Brain Reveals Mind Neural Studies Support the Fundamental Role of Conscious Experience Abstract: In the last decade, careful studies of the living brain have opened the way for human by seven cases: (1) the discovery of widespread brain activation during conscious perception; (2) high

  19. 1. Brain vs Computer Brian Whitworth

    E-Print Network [OSTI]

    Whitworth, Brian

    gates (McCulloch & Pitts, 1943) · The brain has input/output · 1012+ (thousand billion) neurons per head7/12/2011 1 1. Brain vs Computer © Brian Whitworth An Overview http://brianwhitworth.com 2 Aim Compare how computers process information vs how the brain process the senses? Define the main differences

  20. Cognitive and Brain Health Beckman Institute

    E-Print Network [OSTI]

    Illinois at Urbana-Champaign, University of

    Cognitive and Brain Health Beckman Institute FOR ADVANCED SCIENCE AND TECHNOLOGY #12;T he factors involved in cognition and brain health are many. Beckman Institute researchers have demonstrated the links between cognitive and brain health and lifestyle choices such as exercise and social and intellectual

  1. Brain Evolution Relevant to P. Thomas Schoenemann

    E-Print Network [OSTI]

    Schoenemann, P. Thomas

    Brain Evolution Relevant to Language P. Thomas Schoenemann James Madison University 1. Introduction The evolution of language obviously presupposes a brain that made language possible. At the same time, given of the human brain must have been language. Given that language is at least as much a cultural

  2. THE ROLE OF IMAGE REGISTRATION BRAIN MAPPING

    E-Print Network [OSTI]

    Thompson, Paul

    1 THE ROLE OF IMAGE REGISTRATION IN BRAIN MAPPING Arthur W. Toga and Paul Thompson Laboratory of Neuro Imaging, Dept. of Neurology, Division of Brain Mapping, UCLA School of Medicine, Los Angeles, CA-5518 E-mail: thompson@loni.ucla.edu #12;2 THE ROLE OF IMAGE REGISTRATION IN BRAIN MAPPING Arthur W. Toga

  3. Brain Organization and Computation Andreas Schierwagen

    E-Print Network [OSTI]

    Schierwagen, Andreas

    Brain Organization and Computation Andreas Schierwagen Institute for Computer Science, Intelligent://www.informatik.uni-leipzig.de/~schierwa Abstract. Theories of how the brain computes can be differentiated in three general conceptions systems approach. The discussion of key features of brain organization (i.e. structure with function

  4. Understanding complexity in the human brain

    E-Print Network [OSTI]

    Gazzaniga, Michael

    Understanding complexity in the human brain Danielle S. Bassett1 and Michael S. Gazzaniga2 1 the ultimate aim of neuroscientific enquiry is to gain an understanding of the brain and how its work- ings of mind­brain mechanisms if the cumulative findings from these neu- roscientific studies are coupled

  5. VOLUMETRIC HARMONIC BRAIN MAPPING Yalin Wang1

    E-Print Network [OSTI]

    VOLUMETRIC HARMONIC BRAIN MAPPING Yalin Wang1 , Xianfeng Gu2 , Tony F. Chan1 , Paul M. Thompson3 and Brain Research Institute, UCLA School of Medicine 4 Department of Mathematics, Harvard University. In this paper, we apply these two techniques to brain mapping problem. We use a tetrahedral mesh to represent

  6. PUZZLING SYMPTOMS: EATING DISORDERS AND THE BRAIN

    E-Print Network [OSTI]

    Squire, Larry R.

    PUZZLING SYMPTOMS: EATING DISORDERS AND THE BRAIN A FAMILY GUIDE TO THE NEUROBIOLOGY OF EATING TO DO WITH THE BRAIN? Although people with eating disorders struggle to eat normally, this is only now believe that part of the problem has to do with how our brains process information about

  7. Brain dynamics promotes function Carlos Lourenco

    E-Print Network [OSTI]

    Lisboa, Universidade TĂ©cnica de

    Brain dynamics promotes function Carlos Louren¸co 1 Faculty of Sciences of the University of Lisbon, 1049-001 Lisboa - Portugal Abstract. Dynamical structure in the brain promotes biological func- tion. Computational scientists have new opportunities to receive 'algorithmic' inspiration from brain processes

  8. Brain Surface Conformal Parameterization with Algebraic Functions

    E-Print Network [OSTI]

    Wang, Yalin

    Brain Surface Conformal Parameterization with Algebraic Functions Yalin Wang1,2 , Xianfeng Gu3 a brain surface to a multi-hole disk. The re- sulting parameterizations do not have any singularities of anatomical surfaces in MRI scans of the brain, in- cluding the hippocampi and the cerebral cortices

  9. Brain Imaging Findings in Neuropathic Pain

    E-Print Network [OSTI]

    Apkarian, A. Vania

    Brain Imaging Findings in Neuropathic Pain Paul Y. Geha, MD and A. Vania Apkarian, PhD* Address (posther- petic neuralgia), then the spinal cord (postspinal cord injury pain), to the brain itself mechanisms; hence, they assume implicitly or explicitly that the rest of the brain passively responds

  10. Improved aethalometer

    DOE Patents [OSTI]

    Hansen, A.D.

    1988-01-25T23:59:59.000Z

    An improved aethalometer having a single light source and a single light detector and two light paths from the light source to the light detector. A quartz fiber filter is inserted in the device, the filter having a collection area in one light path and a reference area in the other light path. A gas flow path through the aethalometer housing allows ambient air to flow through the collection area of the filter so that aerosol particles can be collected on the filter. A rotating disk with an opening therethrough allows light for the light source to pass alternately through the two light paths. The voltage output of the detector is applied to a VCO and the VCO pulses for light transmission separately through the two light paths, are counted and compared to determine the absorption coefficient of the collected aerosol particles. 5 figs.

  11. Int. J. Patt. Recog. Art. Intell., Special Issue on MR Brain Image Analysis, 1997 1 An Integrated Approach for Locating Neuroanatomical Structure from MRI1

    E-Print Network [OSTI]

    Duncan, James S.

    Int. J. Patt. Recog. Art. Intell., Special Issue on MR Brain Image Analysis, 1997 1 An Integrated Approach for Locating Neuroanatomical Structure from MRI1 Lawrence H. Staib , Amit Chakrabortyy and James S results on synthetic and MR brain images show a significant improvement is achieved as a consequence

  12. Synchrotron radiation imaging is a powerful tool to image brain microvasculature

    SciTech Connect (OSTI)

    Zhang, Mengqi; Sun, Danni; Xie, Yuanyuan; Xia, Jian; Long, Hongyu; Hu, Kai; Xiao, Bo, E-mail: csuxiaobo123456@163.com [Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan 410008 (China)] [Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan 410008 (China); Peng, Guanyun [Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800 (China)] [Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800 (China)

    2014-03-15T23:59:59.000Z

    Synchrotron radiation (SR) imaging is a powerful experimental tool for micrometer-scale imaging of microcirculation in vivo. This review discusses recent methodological advances and findings from morphological investigations of cerebral vascular networks during several neurovascular pathologies. In particular, it describes recent developments in SR microangiography for real-time assessment of the brain microvasculature under various pathological conditions in small animal models. It also covers studies that employed SR-based phase-contrast imaging to acquire 3D brain images and provide detailed maps of brain vasculature. In addition, a brief introduction of SR technology and current limitations of SR sources are described in this review. In the near future, SR imaging could transform into a common and informative imaging modality to resolve subtle details of cerebrovascular function.

  13. Improving datacenter performance and robustness with multipath TCP Paper #273, 14 pages

    E-Print Network [OSTI]

    Wischik, Damon

    Improving datacenter performance and robustness with multipath TCP Paper #273, 14 pages ABSTRACT by MPTCP. Using MPTCP allows us to rethink datacenter networks, with a different mindset

  14. Better Buildings Network View | September 2014 | Department of...

    Broader source: Energy.gov (indexed) [DOE]

    Financing Program: On-Bill Financing Brings Lenders and Homeowners On Board Better Buildings Network View | December 2014 On-Bill Financing for Energy Efficiency Improvements...

  15. attenuates brain edema: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    phenolic structures and are elevated in vegetables, fruits, grains, bark, roots, tea, and wine. There are over 8000 polyphenolic structures identified in plants, but edible plants...

  16. adult mammalian brain: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    bats) correlate with predictable chromosomal structural changes (KFTkaryotypic fission theory). Chromosome studies (more) Kolnicki, Robin Lee 2012-01-01 338 Reading...

  17. adult rodent brains: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Moldestad, J.F. Storm, T.B. Leergaard and J.G. Bjaalie CMBN & IMB, University of Oslo, Norway INTRODUCTION Conventional atlases contain for 3-D reconstruction of series of such...

  18. adult brain tumours: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    and sup 1 sup 5 sup 3 Sm-labelled as potential radioimmunotherapy (RIT) radiopharmaceuticals. A variety of malignant tumours over-express somatostatin receptors, proteins...

  19. astrocytic brain tumours: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    and sup 1 sup 5 sup 3 Sm-labelled as potential radioimmunotherapy (RIT) radiopharmaceuticals. A variety of malignant tumours over-express somatostatin receptors, proteins...

  20. amine oxime brain: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    solvent extractants of the types used in the hydrometallurgical recovery of ... Roach, Benjamin David 2011-06-27 5 Synthesis and Cytotoxicity of Silicon and Germanium...

  1. Modeling the Dynamics of Compromised Networks

    SciTech Connect (OSTI)

    Soper, B; Merl, D M

    2011-09-12T23:59:59.000Z

    Accurate predictive models of compromised networks would contribute greatly to improving the effectiveness and efficiency of the detection and control of network attacks. Compartmental epidemiological models have been applied to modeling attack vectors such as viruses and worms. We extend the application of these models to capture a wider class of dynamics applicable to cyber security. By making basic assumptions regarding network topology we use multi-group epidemiological models and reaction rate kinetics to model the stochastic evolution of a compromised network. The Gillespie Algorithm is used to run simulations under a worst case scenario in which the intruder follows the basic connection rates of network traffic as a method of obfuscation.

  2. Forward and inverse metabolic engineering strategies for improving polyhydroxybyrate production

    E-Print Network [OSTI]

    Tyo, Keith E. J

    2008-01-01T23:59:59.000Z

    Forward metabolic engineering (FME) is a rational approach to cellular engineering, relying on an understanding of the entire metabolic network to direct perturbations for phenotype improvement. Conversely, inverse metabolic ...

  3. Spontaneous synchronization driven by energy transport in interconnected networks

    E-Print Network [OSTI]

    Vincenzo Nicosia; Per Sebastian Skardal; Vito Latora; Alex Arenas

    2014-07-22T23:59:59.000Z

    Understanding dynamical processes on networks is an important area of research in complex systems, with far reaching implications and applications in many real-world cases. However, the research to date has mainly focused on single dynamical processes occurring on isolated networks, and very little is known about the more interesting and realistic case of different kinds of intertwined dynamical processes taking place on interconnected networks. An example of the non-trivial combination of two types of dynamics can be found in the human brain, where cerebral circulation delivers the nutrients and oxygenated blood needed for the activity of the different brain areas, and in turn the activity of a region can induce changes in the distribution of blood flow. Here, we introduce and study a model of intertwined dynamics on interconnected networks, inspired by the human brain, which consists of bidirectionally coupled synchronization and energy transport processes. Remarkably, the proposed model allows the emergence of spontaneous switch-like synchronization transitions driven by the energy transport dynamics, which qualitatively mirror the transitions observed in human brain dynamics between resting-state and cognitive activity. We provide a steady-state analytical explanation for the observed behavior and furthermore show that the switch-like transition is robust over a wide range of model parameters and network topologies. We suggest that the complexity inherent in other interconnected dynamical processes might be responsible for various other emergent behaviors observed in natural systems.

  4. G. Christina Caballero 1 Ketamine Sedation in Traumatic Brain Injury: Friend or Foe?

    E-Print Network [OSTI]

    Pillow, Jonathan

    Pharmacotherapy Education and Research Center, University of Texas Health Sciences Center at San Antonio September TBI related to secondary injury and evolves over hours to days following injury d. Improved outcomes MAP > 70 mmHg Systolic blood pressure > 90 mmHg Oxygenation The brain requires oxygen for glucose

  5. Network Bandwidth Utilization Forecast Model on High Bandwidth Network

    SciTech Connect (OSTI)

    Yoo, Wucherl; Sim, Alex

    2014-07-07T23:59:59.000Z

    With the increasing number of geographically distributed scientific collaborations and the scale of the data size growth, it has become more challenging for users to achieve the best possible network performance on a shared network. We have developed a forecast model to predict expected bandwidth utilization for high-bandwidth wide area network. The forecast model can improve the efficiency of resource utilization and scheduling data movements on high-bandwidth network to accommodate ever increasing data volume for large-scale scientific data applications. Univariate model is developed with STL and ARIMA on SNMP path utilization data. Compared with traditional approach such as Box-Jenkins methodology, our forecast model reduces computation time by 83.2percent. It also shows resilience against abrupt network usage change. The accuracy of the forecast model is within the standard deviation of the monitored measurements.

  6. PROJECT SCHEDULING: IMPROVED APPROACH TO INCORPORATE

    E-Print Network [OSTI]

    Neil, Martin

    ] project scheduling inevitably involves uncertainty. The basic inputs (i.e., time, cost, and resourcesPROJECT SCHEDULING: IMPROVED APPROACH TO INCORPORATE UNCERTAINTY USINC BAYESIAN NETWORKS VAHID, there is a causal relationship between these uncertainty sources and project parameters; this causality

  7. Brain-compatible research: using brain-based techniques to positively impact student learning.

    E-Print Network [OSTI]

    Herson, Laurie A

    2006-01-01T23:59:59.000Z

    ??This thesis discusses brain-based methodology and how educators can use brain-based techniques to impact, support, and advance cognitive growth. Current research on learning and memory… (more)

  8. A Toolkit for Real-time Analysis of Dynamic Large-Scale Networks

    E-Print Network [OSTI]

    Kuipers, Fernando A.

    contains algorithms to compute metrics of static snapshots of the dynamic graph. I. INTRODUCTION Many that have played on the same team [8], and more abstract things such as functional brain networks where possible to process them in a single machine. Often, the networks are not even stored in a single location

  9. Improving School Governance | 1 Improving School Governance

    E-Print Network [OSTI]

    Rambaut, Andrew

    Improving School Governance | 1 Improving School Governance A Recommended Code of Governance for Schools: A flexible framework for strategic planning October 2012 Pilot version 1 #12;Improving School Governance | 2 #12;Improving School Governance | 3 This pilot version of the Recommended Code of Governance

  10. Center for BrainHealtH Scientific exploration at

    E-Print Network [OSTI]

    O'Toole, Alice J.

    Center for BrainHealtH #12;#12;Scientific exploration at BrainHealth is leading edge, innovative and transformative. leading tHe way in tHiS century'S greateSt ScientiFic cauSe The Center for Brain significant cause of the century: To understand, protect and heal the brain. Scientific exploration at Brain

  11. Labeling the Brain Surface Using a Deformable Multiresolution Mesh

    E-Print Network [OSTI]

    Desbrun, Mathieu

    Labeling the Brain Surface Using a Deformable Multiresolution Mesh Sylvain Jaume1 , Beno^it Macq2 Abstract. We propose to match a labeled mesh onto the patient brain surface in a multiresolution way for labeling the patient brain. Labeling the patient brain surface provides a map of the brain folds where

  12. Brain Mapping Using Topology Graphs Obtained by Surface Segmentation

    E-Print Network [OSTI]

    Linsen, Lars

    Brain Mapping Using Topology Graphs Obtained by Surface Segmentation Fabien Vivodtzev1 , Lars@ucdavis.edu Summary. Brain mapping is a technique used to alleviate the tedious and time- consuming process of annotating brains by mapping existing annotations from brain atlases to individual brains. We introduce

  13. Mapping genetic in uences on human brain Paul Thompson

    E-Print Network [OSTI]

    Thompson, Paul

    Mapping genetic in uences on human brain structure Paul Thompson 1 , Tyrone D Cannon 2 and Arthur W Toga 1 Recent advances in brain imaging and genetics haveRecent advances in brain imaging and genetics and environmental inÂŻuences on the human brain. These techniques shed lightinÂŻuences on the human brain

  14. Stanching the Brain Drain: Merit Scholarships and Post-Baccalaureate

    E-Print Network [OSTI]

    Heller, Don

    Stanching the Brain Drain: Merit Scholarships and Post-Baccalaureate Migration Patterns Donald E of Brain DrainThe Issue of Brain Drain OutOut--migration of educated youngmigration of educated young is brain drain an issue?Where is brain drain an issue? #12;© 2004, D.E. Heller & K.R. Rogers© 2004, D

  15. BEaST: Brain extraction using multiresolution nonlocal segmentation

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    BEaST: Brain extraction using multiresolution nonlocal segmentation Simon F. Eskildsen1 Ă?stergaard2 , D. Louis Collins1 , and the Alzheimer's Disease Neuroimaging Initiative 1 McConnell Brain. Brain extraction is an important step in the analysis of brain images. Variability in brain morphology

  16. Brain Receptor Structures Key to Future Therapeutics

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Brain Receptor Structures Key to Future Therapeutics Print With an aging population in America, it is more important than ever to discover ways to treat or prevent diseases...

  17. "Artificial" brains, electrical grids, and disease modeling:...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Science discoveries unveiled "Artificial" brains, electrical grids, and disease modeling: Los Alamos science discoveries unveiled September 15 The event is an opportunity for...

  18. Phoebus: Network Middleware for Next-Generation Network Computing

    SciTech Connect (OSTI)

    Martin Swany

    2012-06-16T23:59:59.000Z

    The Phoebus project investigated algorithms, protocols, and middleware infrastructure to improve end-to-end performance in high speed, dynamic networks. The Phoebus system essentially serves as an adaptation point for networks with disparate capabilities or provisioning. This adaptation can take a variety of forms including acting as a provisioning agent across multiple signaling domains, providing transport protocol adaptation points, and mapping between distributed resource reservation paradigms and the optical network control plane. We have successfully developed the system and demonstrated benefits. The Phoebus system was deployed in Internet2 and in ESnet, as well as in GEANT2, RNP in Brazil and over international links to Korea and Japan. Phoebus is a system that implements a new protocol and associated forwarding infrastructure for improving throughput in high-speed dynamic networks. It was developed to serve the needs of large DOE applications on high-performance networks. The idea underlying the Phoebus model is to embed Phoebus Gateways (PGs) in the network as on-ramps to dynamic circuit networks. The gateways act as protocol translators that allow legacy applications to use dedicated paths with high performance.

  19. Cicada: Predictive Guarantees for Cloud Network Bandwidth

    E-Print Network [OSTI]

    LaCurts, Katrina

    2014-03-24T23:59:59.000Z

    In cloud-computing systems, network-bandwidth guarantees have been shown to improve predictability of application performance and cost. Most previous work on cloud-bandwidth guarantees has assumed that cloud tenants know ...

  20. GLOBAL OPTIMIZATION OF NONLINEAR NETWORK DESIGN 1 ...

    E-Print Network [OSTI]

    2012-04-30T23:59:59.000Z

    nonlinear resistances and potential driven flows is proposed. ... with tailored cuts is proposed that improves the computational efficiency over a standard ... Networks are employed for transporting energy, material, peo- ... The authors report.

  1. Ultrasound-Enhanced Drug Transport and Distribution in the Brain

    E-Print Network [OSTI]

    2010-01-01T23:59:59.000Z

    enhanced taxol delivery in brain tumor patients usingopening of the blood–brain barrier in rabbits. Radiology.and Distribution in the Brain Ying Liu, 1 Sumit Paliwal, 2

  2. On Reverse Engineering in the Cognitive and Brain Andreas Schierwagen

    E-Print Network [OSTI]

    Schierwagen, Andreas

    On Reverse Engineering in the Cognitive and Brain Sciences Andreas Schierwagen Institute #12;On Reverse Engineering in the Cognitive and Brain Sciences Andreas Schierwagen Institute research initiatives try to utilize the operational principles of organisms and brains to develop

  3. Local drug delivery for treatment of brain tumor associated edema

    E-Print Network [OSTI]

    Ong, Qunya

    2014-01-01T23:59:59.000Z

    Brain tumor associated edema, a common feature of malignant brain neoplasms, is a significant cause of morbidity from brain tumor. Systemic administration of corticosteroids, the standard of care, is highly effective but ...

  4. Wakate-Initiative Seminar Memory formation in the fly brain!

    E-Print Network [OSTI]

    Ejiri, Shinji

    Wakate-Initiative Seminar Memory formation in the fly brain! Dr. Hiromu Tanimoto Head is synthesized in ~280 neurons in the fly brain and involved also in other brain functions, it is important

  5. Intraoperative Brain Tumor Resection Cavity Characterization with Conoscopic Holography

    E-Print Network [OSTI]

    Webster III, Robert James

    Intraoperative Brain Tumor Resection Cavity Characterization with Conoscopic Holography Amber L ABSTRACT Brain shift compromises the accuracy of neurosurgical image-guided interventions if not corrected approach to correcting for brain shift. Laser range scan, instrument swabbing, and conoscopic holography

  6. ORIGINAL PAPER Social Networks Help Control Hypertension

    E-Print Network [OSTI]

    Gleeson, Joseph G.

    ORIGINAL PAPER Social Networks Help Control Hypertension Fadia T. Shaya, PhD, MPH;1 Viktor V administered within social networks on the improvement of hypertension in 248 African Americans compared with historical controls. Patients formed clusters with peers and attended monthly hypertension education sessions

  7. ay 1 Mysteries of Brain : Come and `learn about the brain'. Have you wondered, "What is our brain like?" "How do we sense things around us?" and "How do we react to our environment?"

    E-Print Network [OSTI]

    Narayanan, H.

    of Brain : Come and `learn about the brain'. Have you wondered, "What is our brain like?" "How do we sense about `neuron' as a basic unit of the brain, structure of the brain, functions closely associated with brain lobes and hemispheres and understanding the nervous system Special Focus: Brain Hemispheres

  8. Cognitive Radio Networks as Sensor Networks

    E-Print Network [OSTI]

    Bandari, Dorna; Yang, Seung R.; Zhao, Yue; Pottie, Gregory

    2007-01-01T23:59:59.000Z

    is used, assuming the cognitive radios know their ownfor Embedded Networked Sensing Cognitive Radio Networks AsJ. Pottie Introduction: Cognitive Radio (CR) Networks The

  9. Pinning impulsive control algorithms for complex network

    SciTech Connect (OSTI)

    Sun, Wen [School of Information and Mathematics, Yangtze University, Jingzhou 434023 (China)] [School of Information and Mathematics, Yangtze University, Jingzhou 434023 (China); Lü, Jinhu [Academy of Mathematics and Systems Science, Chinese Academy of Sciences, Beijing 100190 (China)] [Academy of Mathematics and Systems Science, Chinese Academy of Sciences, Beijing 100190 (China); Chen, Shihua [College of Mathematics and Statistics, Wuhan University, Wuhan 430072 (China)] [College of Mathematics and Statistics, Wuhan University, Wuhan 430072 (China); Yu, Xinghuo [School of Electrical and Computer Engineering, RMIT University, Melbourne VIC 3001 (Australia)] [School of Electrical and Computer Engineering, RMIT University, Melbourne VIC 3001 (Australia)

    2014-03-15T23:59:59.000Z

    In this paper, we further investigate the synchronization of complex dynamical network via pinning control in which a selection of nodes are controlled at discrete times. Different from most existing work, the pinning control algorithms utilize only the impulsive signals at discrete time instants, which may greatly improve the communication channel efficiency and reduce control cost. Two classes of algorithms are designed, one for strongly connected complex network and another for non-strongly connected complex network. It is suggested that in the strongly connected network with suitable coupling strength, a single controller at any one of the network's nodes can always pin the network to its homogeneous solution. In the non-strongly connected case, the location and minimum number of nodes needed to pin the network are determined by the Frobenius normal form of the coupling matrix. In addition, the coupling matrix is not necessarily symmetric or irreducible. Illustrative examples are then given to validate the proposed pinning impulsive control algorithms.

  10. From blood to the brain: can systemically transplanted mesenchymal stem cells cross the blood-brain barrier?

    E-Print Network [OSTI]

    Liu, Linan; Eckert, Mark A; Riazifar, Hamidreza; Kang, Dong-Ku; Agalliu, Dritan; Zhao, Weian

    2013-01-01T23:59:59.000Z

    and function of the blood-brain barrier,” Neurobiology ofV. Zlokovic, “The blood-brain barrier in health and chroniccell biology of the blood- brain barrier,” Annual Review of

  11. Characterization of the Mouse Brain Proteome Using Global Proteomic...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    the Mouse Brain Proteome Using Global Proteomic Analysis Complemented with Cysteinyl-Peptide Enrichment. Characterization of the Mouse Brain Proteome Using Global Proteomic...

  12. Brain insulin lowers circulating BCAA levels by inducing hepatic...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Brain insulin lowers circulating BCAA levels by inducing hepatic BCAA catabolism. Brain insulin lowers circulating BCAA levels by inducing hepatic BCAA catabolism. Abstract:...

  13. Mapping protein abundance patterns in the brain using voxelation...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    protein abundance patterns in the brain using voxelation combined with liquid chromatography and mass spectrometry. Mapping protein abundance patterns in the brain using voxelation...

  14. Neural Network Applications P.Tino@cs.bham.ac.uk

    E-Print Network [OSTI]

    Bullinaria, John

    synapses (connections). · 10 orders of magnitude more energy efficient than computer. #12;Plasticity continues for the first 2 years. · Plasticity of the neural network constituents #12;Human Brain · Typically · Plasticity permits nervous system to adapt to its environment. Two mechanisms: (1) creation of new synaptic

  15. Unitizing worker expertise and maximizing the brain reward centers

    SciTech Connect (OSTI)

    Martinez, Anthony Bert [Los Alamos National Laboratory

    2010-01-01T23:59:59.000Z

    People are experts when it comes to the work they do; unfortunately their expertise is not utilized as frequently as it could be. More opportunities need to be provided that allow people to participate in the design of their work including: accident investigations, job planning, and process improvements. Many employers use some form of job hazard analysis process to identify and document hazards and controls, but the front line worker is rarely involved. This presentation will show the core principles supporting employee involvement, provide examples where workers had brilliant ideas but no one listened, and provide examples where workers were given the opportunity to use their expertise to improve occupational safety. According to Abraham Maslow's Hierarch of Needs model, one essential human need is to be innovative and solve problems. Advances in brain science have proven, through functional magnetic resonance imaging (fMRI) studies, the brain reward pathway is activated when people are recognized for their intellectual contributions. As people contribute their expertise to improve occupational safety more frequently they will feel a sense of gratification. In addition, safety professionals will have more time to spend on strategic planning of emerging occupational safety issues. One effect of the current global recession is that SH&E professionals are asked to do more with less. Therefore, to be successful it is essential that SH&E professionals incorporate worker expertise in job planning. This will be illustrated in the presentation through an example where a worker had the answer to a difficult decision on appropriate personal protective equipment for a job but no one asked the worker for his idea during the job planning phase. Fortunately the worker was eventually consulted and his recommendation for the appropriate personal protective equipment for the job was implemented before work began. The goal of this presentation is to expand the awareness and knowledge of SH&E professionals on the benefits and opportunities for leveraging brain science. This will include an overview of the components of the brain reward pathway and the biological mechanisms that make workers feel a sense of gratification when they contribute their ideas toward improving occupational safety. On-the-job examples where it is hypothesized that the brain reward pathway was activated in workers will be provided. Finally, the presentation will include a model illustrating the importance of empowering workers to participate in occupational safety programs. SH&E professionals can use this model to maintain a robust safety and health program with limited resources. The model will also help SH&E professionals prepare for challenges in the SH&E fields by showing them how to allocate more time for strategic planning of emerging issues. Many recent best selling business books such as Wikinomics, Crowdsourcing, and Sway, illustrate how the benefit of harnessing the collective knowledge of employees is a key to company success. Companies like Google and Pixar have mastered the ability to capture empFoyee knowledge in terms of technology. Why should occupational safety be any different? Workers know how to improve safety in their workplace. SH&E professionals can harness this collective safety knowledge just as top companies do with technology, and workers will feel grateful for contributing.

  16. Network Perspectives on Communities

    E-Print Network [OSTI]

    Wolfe, Alvin W

    2006-01-01T23:59:59.000Z

    W W. Networks Fields and Organizations: Micro-Dynamics Scaleentitled “Networks, Fields and Organizations: Micro-

  17. Routing in hybrid networks

    E-Print Network [OSTI]

    Gupta, Avinash

    2001-01-01T23:59:59.000Z

    Hybrid networks are networks that have wired as well as wireless components. Several routing protocols exist for traditional wired networks and mobile ad-hoc networks. However, there are very few routing protocols designed for hybrid networks...

  18. Improved Microseismicity Detection During Newberry EGS Stimulations

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Templeton, Dennise

    Effective enhanced geothermal systems (EGS) require optimal fracture networks for efficient heat transfer between hot rock and fluid. Microseismic mapping is a key tool used to infer the subsurface fracture geometry. Traditional earthquake detection and location techniques are often employed to identify microearthquakes in geothermal regions. However, most commonly used algorithms may miss events if the seismic signal of an earthquake is small relative to the background noise level or if a microearthquake occurs within the coda of a larger event. Consequently, we have developed a set of algorithms that provide improved microearthquake detection. Our objective is to investigate the microseismicity at the DOE Newberry EGS site to better image the active regions of the underground fracture network during and immediately after the EGS stimulation. Detection of more microearthquakes during EGS stimulations will allow for better seismic delineation of the active regions of the underground fracture system. This improved knowledge of the reservoir network will improve our understanding of subsurface conditions, and allow improvement of the stimulation strategy that will optimize heat extraction and maximize economic return.

  19. Improved Microseismicity Detection During Newberry EGS Stimulations

    SciTech Connect (OSTI)

    Templeton, Dennise

    2013-11-01T23:59:59.000Z

    Effective enhanced geothermal systems (EGS) require optimal fracture networks for efficient heat transfer between hot rock and fluid. Microseismic mapping is a key tool used to infer the subsurface fracture geometry. Traditional earthquake detection and location techniques are often employed to identify microearthquakes in geothermal regions. However, most commonly used algorithms may miss events if the seismic signal of an earthquake is small relative to the background noise level or if a microearthquake occurs within the coda of a larger event. Consequently, we have developed a set of algorithms that provide improved microearthquake detection. Our objective is to investigate the microseismicity at the DOE Newberry EGS site to better image the active regions of the underground fracture network during and immediately after the EGS stimulation. Detection of more microearthquakes during EGS stimulations will allow for better seismic delineation of the active regions of the underground fracture system. This improved knowledge of the reservoir network will improve our understanding of subsurface conditions, and allow improvement of the stimulation strategy that will optimize heat extraction and maximize economic return.

  20. Improved Microseismicity Detection During Newberry EGS Stimulations

    SciTech Connect (OSTI)

    Templeton, Dennise

    2013-10-01T23:59:59.000Z

    Effective enhanced geothermal systems (EGS) require optimal fracture networks for efficient heat transfer between hot rock and fluid. Microseismic mapping is a key tool used to infer the subsurface fracture geometry. Traditional earthquake detection and location techniques are often employed to identify microearthquakes in geothermal regions. However, most commonly used algorithms may miss events if the seismic signal of an earthquake is small relative to the background noise level or if a microearthquake occurs within the coda of a larger event. Consequently, we have developed a set of algorithms that provide improved microearthquake detection. Our objective is to investigate the microseismicity at the DOE Newberry EGS site to better image the active regions of the underground fracture network during and immediately after the EGS stimulation. Detection of more microearthquakes during EGS stimulations will allow for better seismic delineation of the active regions of the underground fracture system. This improved knowledge of the reservoir network will improve our understanding of subsurface conditions, and allow improvement of the stimulation strategy that will optimize heat extraction and maximize economic return.

  1. Understanding Alterations in Brain Connectivity in Attention-Deficit/Hyperactivity Disorder Using

    E-Print Network [OSTI]

    COMMENTARY Understanding Alterations in Brain Connectivity in Attention of neural systems and brain connections is an important new area of research to understand both normal brain connectivity and alterations in brain connectivity in neuropsychiatric disorders. The study of brain

  2. Treatment of Five or More Brain Metastases With Stereotactic Radiosurgery

    SciTech Connect (OSTI)

    Hunter, Grant K.; Suh, John H.; Reuther, Alwyn M. [Department of Radiation Oncology, Cleveland Clinic, Cleveland, OH (United States)] [Department of Radiation Oncology, Cleveland Clinic, Cleveland, OH (United States); Vogelbaum, Michael A.; Barnett, Gene H.; Angelov, Lilyana; Weil, Robert J. [Department of Neurosurgery, Cleveland Clinic, Cleveland, OH (United States)] [Department of Neurosurgery, Cleveland Clinic, Cleveland, OH (United States); Neyman, Gennady [Department of Radiation Oncology, Cleveland Clinic, Cleveland, OH (United States)] [Department of Radiation Oncology, Cleveland Clinic, Cleveland, OH (United States); Chao, Samuel T., E-mail: chaos@ccf.org [Department of Radiation Oncology, Cleveland Clinic, Cleveland, OH (United States)

    2012-08-01T23:59:59.000Z

    Purpose: To examine the outcomes of patients with five or more brain metastases treated in a single session with stereotactic radiosurgery (SRS). Methods and Materials: Sixty-four patients with brain metastases treated with SRS to five or more lesions in a single session were reviewed. Primary disease type, number of lesions, Karnofsky performance score (KPS) at SRS, and status of primary and systemic disease at SRS were included. Patients were treated using dosing as defined by Radiation Therapy Oncology Group Protocol 90-05, with adjustments for critical structures. We defined prior whole-brain radiotherapy (WBRT) as WBRT completed >1 month before SRS and concurrent WBRT as WBRT completed within 1 month before or after SRS. Kaplan-Meier estimates and Cox proportional hazard regression were used to determine which patient and treatment factors predicted overall survival (OS). Results: The median OS after SRS was 7.5 months. The median KPS was 80 (range, 60-100). A KPS of {>=}80 significantly influenced OS (median OS, 4.8 months for KPS {<=}70 vs. 8.8 months for KPS {>=}80, p = 0.0097). The number of lesions treated did not significantly influence OS (median OS, 6.6 months for eight or fewer lesions vs. 9.9 months for more than eight, p = nonsignificant). Primary site histology did not significantly influence median OS. On multivariate Cox modeling, KPS and prior WBRT significantly predicted for OS. Whole-brain radiotherapy before SRS compared with concurrent WBRT significantly influenced survival, with a risk ratio of 0.423 (95% confidence interval 0.191-0.936, p = 0.0338). No significant differences were observed when no WBRT was compared with concurrent WBRT or when the no WBRT group was compared with prior WBRT. A KPS of {<=}70 predicted for poorer outcomes, with a risk ratio of 2.164 (95% confidence interval 1.157-4.049, p = 0.0157). Conclusions: Stereotactic radiosurgery to five or more brain lesions is an effective treatment option for patients with metastatic cancer, especially for patients previously treated with WBRT. A KPS of {>=}80 predicts for an improved outcome.

  3. The role of whole brain radiation therapy in the management of newly diagnosed brain metastases: a systematic review and evidence-based clinical practice guideline

    E-Print Network [OSTI]

    2010-01-01T23:59:59.000Z

    MANUSCRIPT The role of whole brain radiation therapy in themanagement of newly diagnosed brain metastases: a systematicNeurosurgery, Iowa Spine and Brain Institute, Iowa City, IA,

  4. Milestone Plan Process Improvement

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Milestone Plan Process Improvement Milestone Plan Process Improvement Background In response to our community's concern over the milestone plan (MP) process within the system, the...

  5. SymbioticSphere: a Network Architecture for Autonomic and Emergent Networking

    E-Print Network [OSTI]

    Suzuki, Jun

    in response to higher energy level. A scarcity of stored energy (an indication of lack of demand) may cause of Massachusetts Boston Abstract--Network systems are expected to be more scalable and more adaptive to dynamic to enormous demand placed upon them and adapt to dynamic network environments in order to improve user

  6. Across-Peer Rate Allocation Algorithm in Peer-to-peer Networks

    E-Print Network [OSTI]

    Su, Yang

    2013-05-30T23:59:59.000Z

    We introduce a new across-peer rate allocation algorithm with successive refinement to improve the video transmission performance in P2P networks, based on the combination of multiple description coding and network coding. Successive refinement...

  7. Norme Attuative della Cognitive and Brain Sciences Doctoral School

    E-Print Network [OSTI]

    1 Norme Attuative della Cognitive and Brain Sciences Doctoral School Executive Regulations of the Cognitive and Brain Sciences Doctoral School Norme Attuative della Scuola di Dottorato in Cognitive and Brain Sciences Executive Regulations of the Cognitive and Brain Sciences Doctoral School Approvate nella

  8. An MRI Segmentation Framework for Brains with Anatomical Marcelinus Prastawa

    E-Print Network [OSTI]

    Whitton, Mary C.

    An MRI Segmentation Framework for Brains with Anatomical Deviations Marcelinus Prastawa;ABSTRACT MARCELINUS PRASTAWA: An MRI Segmentation Framework for Brains with Anatomical Deviations (Under the direction of Guido Gerig, Ph.D.) The segmentation of brain Magnetic Resonance (MR) images, where the brain

  9. Introduction Welcome. Brain Basics provides information on how the

    E-Print Network [OSTI]

    Bandettini, Peter A.

    1 Introduction Welcome. Brain Basics provides information on how the brain works, how mental illnesses are disorders of the brain, and ongoing research that helps us better understand and treat be moderate, or serious and cause severe disability. Through research, we know that mental disorders are brain

  10. Computational Modeling of Brain Dynamics during Repetitive Head Motions

    E-Print Network [OSTI]

    Burtscher, Martin

    Computational Modeling of Brain Dynamics during Repetitive Head Motions Igor Szczyrba School motions in traumatic scenarios that are as- sociated with severe brain injuries. Our results are based on the linear Kelvin-Voigt brain injury model, which treats the brain matter as a viscoelastic solid, and on our

  11. Modelling of Brain Consciousness based on Collaborative Adaptive Filters

    E-Print Network [OSTI]

    Kent, University of

    Modelling of Brain Consciousness based on Collaborative Adaptive Filters Ling Lia, , Yili Xiaa of Technology, Japan c Laboratory for Advanced Brain Signal Processing, RIKEN Brain Science Institute, Saitama method for the discrimination between discrete states of brain con- sciousness is proposed, achieved

  12. The brain: What is critical about it? Dante R. Chialvo

    E-Print Network [OSTI]

    Chialvo, Dante R.

    The brain: What is critical about it? Dante R. Chialvo , Pablo Balenzuela and Daniel Fraiman the recent proposal that the most fascinating brain properties are related to the fact that it always stays results, as well as further implications of this view of the functioning brain. Keywords: Brain, critical

  13. Brain donation is one of the most important contributions to

    E-Print Network [OSTI]

    Contractor, Anis

    01-19-09 Brain donation is one of the most important contributions to research. Brain donations 200 brain tissue samples to researchers. Some of the major findings that came about through utilization of this precious gift include: In 2006, Todd Preuss and his team showed that certain brain

  14. Early developmental patterning sets the stage for brain evolution

    E-Print Network [OSTI]

    Hofmann, Hans A.

    Early developmental patterning sets the stage for brain evolution Hans A. Hofmann1 Section of Texas, Austin, TX 78712 T he evolution of brain structure and function has long fascinated biologists of the brain--or brain region--and body size across a wide range of vertebrates (1). Besides random drift, two

  15. Neuronal computing or computational neuroscience: brains vs. computers

    E-Print Network [OSTI]

    Smith, Leslie S.

    Neuronal computing or computational neuroscience: brains vs. computers Leslie S. Smith, Department it matters · Brains and computers: ­ Historical analogies ­ Levels in computers and brains · Mixing levels brains for robot rats! · (Chant of the Neuromorphic Engineers, Telluride, c 1998). · Hardware oriented

  16. Random Forest Classification for Training a Brain Computer Interface (BCI)

    E-Print Network [OSTI]

    de Freitas, Nando

    Random Forest Classification for Training a Brain Computer Interface (BCI) Abstract1 Brain brain activity. Most3 existing BCIs detect specific mental activity in a so-called synchronous4 paradigm extraction7 followed by a classification scheme to detect intentions from the brain8 signal. In this paper

  17. A Brain-Switch using Riemannian Geometry A. Barachant1

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    A Brain-Switch using Riemannian Geometry A. Barachant1 , S. Bonnet1 , M. Congedo2 , C. Jutten2 1 the issue of asynchronous brain-switch. The detection of a specific brain pattern from the ongoing EEG-time EEG segments contain all the desired information. Such a brain-switch is valuable as it is easy to set

  18. Zo Rebecca Hunter Plasticity of the adult human brain

    E-Print Network [OSTI]

    Kallenrode, May-Britt

    Zoë Rebecca Hunter Plasticity of the adult human brain and motor recovery after stroke PICS © Institute of Cognitive Science #12;1 Bachelor's Thesis Plasticity of the adult human brain and motor brain and motor recovery after stroke 2 Abstract Stroke may cause a major destruction of brain tissue

  19. Volume 10, No. 1 Decade of the Brain

    E-Print Network [OSTI]

    Dolbow, John

    Winter 2014 Volume 10, No. 1 SHINING A LIGHT ON BRAIN INJURY Decade of the Brain #12;ALSO of traumatic brain injury in children 14 "Hypoxia in a box" may reveal hidden concussion damage 18 Diabetes Clark, MSN'11, builds hope and health in Uganda Decade of the BRAIN #12;From 1990 through 2000, the U

  20. Doppler Ultrasound Driven Biomechanical Model of the Brain for

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Doppler Ultrasound Driven Biomechanical Model of the Brain for Intraoperative Brain of the target is essential to reduce mor- bidity during brain tumor removal interventions. Yet, image-guided neu- rosurgery faces an important issue for large skull openings where brain soft-tissues can exhibit large

  1. Auditory Brain Stem Response to Complex Sounds: Erika Skoe1

    E-Print Network [OSTI]

    & Williston 1971; Moushegian et al. 1973), auditory brain stem responses (ABRs) can be measured using scalp

  2. Multipinhole collimator with 20 apertures for a brain SPECT application

    SciTech Connect (OSTI)

    Lee, Tzu-Cheng; Ellin, Justin R.; Shrestha, Uttam; Seo, Youngho, E-mail: youngho.seo@ucsf.edu [Physics Research Laboratory, Department of Radiology and Biomedical Imaging, University of California, San Francisco, California 94107 (United States); Huang, Qiu [School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai 200030 (China); Gullberg, Grant T. [Department of Radiotracer Development and Imaging Technology, Life Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94702 (United States)

    2014-11-01T23:59:59.000Z

    Purpose: Several new technologies for single photon emission computed tomography (SPECT) instrumentation with parallel-hole collimation have been proposed to improve detector sensitivity and signal collection efficiency. Benefits from improved signal efficiency include shorter acquisition times and lower dose requirements. In this paper, the authors show a possibility of over an order of magnitude enhancement in photon detection efficiency (from 7.6 × 10{sup ?5} to 1.6 × 10{sup ?3}) for dopamine transporter (DaT) imaging of the striatum over the conventional SPECT parallel-hole collimators by use of custom-designed 20 multipinhole (20-MPH) collimators with apertures of 0.75 cm diameter. Methods: Quantifying specific binding ratio (SBR) of {sup 123}I-ioflupane or {sup 123}I-iometopane’s signal at the striatal region is a common brain imaging method to confirm the diagnosis of the Parkinson’s disease. The authors performed imaging of a striatal phantom filled with aqueous solution of I-123 and compared camera recovery ratios of SBR acquired between low-energy high-resolution (LEHR) parallel-hole collimators and 20-MPH collimators. Results: With only two-thirds of total acquisition time (20 min against 30 min), a comparable camera recovery ratio of SBR was achieved using 20-MPH collimators in comparison to that from the LEHR collimator study. Conclusions: Their systematic analyses showed that the 20-MPH collimator could be a promising alternative for the DaT SPECT imaging for brain over the traditional LEHR collimator, which could give both shorter scan time and improved diagnostic accuracy.

  3. Spontaneous synchronization driven by energy transport in interconnected networks

    E-Print Network [OSTI]

    Vincenzo Nicosia; Per Sebastian Skardal; Vito Latora; Alex Arenas

    2015-02-26T23:59:59.000Z

    Understanding dynamical processes on networks is an important area of research in complex systems, with far reaching implications and applications in many real-world cases. Here we introduce and study a model of intertwined dynamics on interconnected networks, inspired by the human brain, which consists of bidirectionally coupled synchronization and energy transport processes. Remarkably, the proposed model allows the emergence of spontaneous switch-like synchronization transitions driven by the energy transport dynamics, which qualitatively mirror the transitions observed in human brain dynamics between resting-state and cognitive activity. We provide a steady-state analytical explanation for the observed behavior and show that the switch-like transition is robust over a wide range of model parameters and network topologies. Finally, we suggest that the complexity inherent in other interconnected dynamical processes might be responsible for various other emergent behaviors observed in natural systems.

  4. Scientists examine proton radiography of brain mockup

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Scientists examine proton radiography of brain mockup The use of such a high-energy proton beam is ideal for imaging small tumors within patients for targeted proton therapy. March...

  5. NATIONAL BRAIN RESEARCH CENTRE ANNUAL REPORT

    E-Print Network [OSTI]

    Dhingra, Narender K.

    , assimilate, publish and disseminate data and information on aspects relevant to neuroscience in the field of brain and neurosciences research. · To establish one or more satellite centers to serve

  6. Math Currents in the Brain. Misha Gromov

    E-Print Network [OSTI]

    Gromov, Misha

    of electrochemical signals that the brain receives. There is further evidence in favour of such "systems"; yet and opportunities tinkering with our genomes than with genomes of insects.6 ) Solution. Ants mark their trails

  7. Applications How to build a brain

    E-Print Network [OSTI]

    Anderson, Charles H.

    Applications How to build a brain Chris & Terry Centre for Theoretical Neuroscience University y z A B T #12;Learning results #12;Rule (R) (Language Areas) Context (VMPFC) Right Inferior Frontal

  8. Where Brain, Body and World Collide 

    E-Print Network [OSTI]

    Clark, Andy

    1998-01-01T23:59:59.000Z

    The brain fascinates because it is the biological organ of mindfulness itself. It is the inner engine that drives intelligent behavior. Such a depiction provides a worthy antidote to the once-popular vision of the mind as ...

  9. Nanotools for Neuroscience and Brain Activity Mapping

    E-Print Network [OSTI]

    Alivisatos, A. Paul

    Neuroscience is at a crossroads. Great effort is being invested into deciphering specific neural interactions and circuits. At the same time, there exist few general theories or principles that explain brain function. We ...

  10. Brain Imaging with Positron Emission Tomography: Quantification and Biomedical Applications in Alzheimer's Disease and Brain Tumors

    E-Print Network [OSTI]

    Wardak, Mirwais

    2013-01-01T23:59:59.000Z

    Diseases of the brain can result from errors introduced into its chemical systems by viruses, bacteria, genetic abnormalities, drugs, trauma, environmental

  11. Abstract -Other researchers have proposed that the brain parenchymal fraction (or brain atrophy) may be a good surrogate

    E-Print Network [OSTI]

    Orchard, Jeffery J.

    Abstract - Other researchers have proposed that the brain parenchymal fraction (or brain atrophy. This paper considers various factors influencing the measure of the brain parenchymal fraction obtained from head MRI scans. An automatic segmentation method for the brain and for the cerebral spinal fluid

  12. Brain Cluster Leiden -InventoryBrain Cluster Leiden -Inventory Inventory of organizations working inInventory of organizations working in

    E-Print Network [OSTI]

    Galis, Frietson

    Brain Cluster Leiden - InventoryBrain Cluster Leiden - Inventory Inventory of organizations working brain Annelieke Hoenderkamp Leiden Bio Science Park foundation in assignment of Municipality of Leiden November 2011 #12;IntroductionIntroduction · The brain is the most complex organ in the human body. Its

  13. Plasticity of the human brain " We never use the same brain twice" Arno Villringer and Burkhard Pleger

    E-Print Network [OSTI]

    Plasticity of the human brain " We never use the same brain twice" Arno Villringer and Burkhard Pleger Max Planck Institute for Human Brain and Cognitive Sciences, Leipzig Summary With the advent of noninvasive neuroimaging the human brain has become accessible for invivo

  14. Near to the Brain: Functional Near-Infrared Spectroscopy as a Lightweight Brain Imaging Technique for Visualization

    E-Print Network [OSTI]

    Tomkins, Andrew

    Near to the Brain: Functional Near-Infrared Spectroscopy as a Lightweight Brain Imaging Technique the use of cumbersome or expensive brain imaging equipment. In recent years, functional near-infrared near-infrared spectroscopy (fNIRS) is an emerging technology for brain imaging being developed

  15. PACAP Interactions in the Mouse Brain: Implications for Behavioral and Other Disorders

    SciTech Connect (OSTI)

    Acquaah-Mensah, George; Taylor, Ronald C.; Bhave, Sanjiv V.

    2012-01-10T23:59:59.000Z

    As an activator of adenylate cyclase, the neuropeptide Pituitary Adenylate Cyclase Activating Peptide (PACAP) impacts levels of cyclic AMP, a key second messenger available in brain cells. PACAP is involved in certain adult behaviors. To elucidate PACAP interactions, a compendium of microarrays representing mRNA expression in the adult mouse whole brain was pooled from the Phenogen database for analysis. A regulatory network was computed based on mutual information between gene pairs using gene expression data across the compendium. Clusters among genes directly linked to PACAP, and probable interactions between corresponding proteins were computed. Database 'experts' affirmed some of the inferred relationships. The findings suggest ADCY7 is probably the adenylate cyclase isoform most relevant to PACAP's action. They also support intervening roles for kinases including GSK3B, PI 3-kinase, SGK3 and AMPK. Other high-confidence interactions are hypothesized for future testing. This new information has implications for certain behavioral and other disorders.

  16. System and method for networking electrochemical devices

    DOE Patents [OSTI]

    Williams, Mark C. (Morgantown, WV); Wimer, John G. (Morgantown, WV); Archer, David H. (Pittsburgh, PA)

    1995-01-01T23:59:59.000Z

    An improved electrochemically active system and method including a plurality of electrochemical devices, such as fuel cells and fluid separation devices, in which the anode and cathode process-fluid flow chambers are connected in fluid-flow arrangements so that the operating parameters of each of said plurality of electrochemical devices which are dependent upon process-fluid parameters may be individually controlled to provide improved operating efficiency. The improvements in operation include improved power efficiency and improved fuel utilization in fuel cell power generating systems and reduced power consumption in fluid separation devices and the like through interstage process fluid parameter control for series networked electrochemical devices. The improved networking method includes recycling of various process flows to enhance the overall control scheme.

  17. BRAIN, BEHAVIOUR AND NEUROIMAGING A seminar to create awareness about the mysteries of the brain

    E-Print Network [OSTI]

    Narayanan, H.

    BRAIN, BEHAVIOUR AND NEUROIMAGING A seminar to create awareness about the mysteries of the brain Srinivasan Professor & Head, Centre of Behavioural and Cognitive Sciences, University of Allahabad.D. Head of Department, Physiology, S.M.S. Medical College, Jaipur Psychology and Police investigations Mr

  18. Improving supply chain resilience

    E-Print Network [OSTI]

    Leung, Elsa Hiu Man

    2009-01-01T23:59:59.000Z

    Due to the global expansion of Company A's supply chain network, it is becoming more vulnerable to many disruptions. These disruptions often incur additional costs; and require time to respond to and recover from these ...

  19. E-Print Network 3.0 - anisotropic random environment Sample Search...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    of - School of GeoSciences, Edinburgh Anisotropy Project Collection: Geosciences 74 Using Micro-Genetic Algorithms to Improve Localization in Wireless Sensor Networks Summary: over...

  20. E-Print Network 3.0 - assisted anchoring technique Sample Search...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Universitt Mnchen Collection: Computer Technologies and Information Sciences 88 Using Micro-Genetic Algorithms to Improve Localization in Wireless Sensor Networks Summary: when...

  1. Economic Improvement Districts (Indiana)

    Broader source: Energy.gov [DOE]

    A legislative body may adopt an ordinance establishing an economic improvement district and an Economic Improvement Board to manage development in a respective district. The Board can choose to...

  2. miRNAs in brain development

    SciTech Connect (OSTI)

    Petri, Rebecca; Malmevik, Josephine; Fasching, Liana; Ĺkerblom, Malin; Jakobsson, Johan, E-mail: johan.jakobsson@med.lu.se

    2014-02-01T23:59:59.000Z

    MicroRNAs (miRNAs) are small, non-coding RNAs that negatively regulate gene expression at the post-transcriptional level. In the brain, a large number of miRNAs are expressed and there is a growing body of evidence demonstrating that miRNAs are essential for brain development and neuronal function. Conditional knockout studies of the core components in the miRNA biogenesis pathway, such as Dicer and DGCR8, have demonstrated a crucial role for miRNAs during the development of the central nervous system. Furthermore, mice deleted for specific miRNAs and miRNA-clusters demonstrate diverse functional roles for different miRNAs during the development of different brain structures. miRNAs have been proposed to regulate cellular functions such as differentiation, proliferation and fate-determination of neural progenitors. In this review we summarise the findings from recent studies that highlight the importance of miRNAs in brain development with a focus on the mouse model. We also discuss the technical limitations of current miRNA studies that still limit our understanding of this family of non-coding RNAs and propose the use of novel and refined technologies that are needed in order to fully determine the impact of specific miRNAs in brain development. - Highlights: • miRNAs are essential for brain development and neuronal function. • KO of Dicer is embryonically lethal. • Conditional Dicer KO results in defective proliferation or increased apoptosis. • KO of individual miRNAs or miRNA families is necessary to determine function.

  3. Brain Receptor Structures Key to Future Therapeutics

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth (AOD)ProductssondeadjustsondeadjustAboutScienceCareers ApplyResistant: A ComparisonBrain ReceptorBrain

  4. Secure and efficient wireless networks

    E-Print Network [OSTI]

    Bellardo, John Michael

    2006-01-01T23:59:59.000Z

    CA Systems and Network Administrator California Integrationgives the campus network administrators complete admissionin engineered networks, enterprise administrators try to

  5. Modeling oscillatory dynamics in brain microcircuits as a way to help uncover neurological disease mechanisms: A proposal

    SciTech Connect (OSTI)

    Skinner, F. K. [Toronto Western Research Institute, University Health Network, Krembil Discovery Tower, Toronto Western Hospital, 60 Leonard Street, 7th floor, 7KD411, Toronto, Ontario M5T 2S8 (Canada) [Toronto Western Research Institute, University Health Network, Krembil Discovery Tower, Toronto Western Hospital, 60 Leonard Street, 7th floor, 7KD411, Toronto, Ontario M5T 2S8 (Canada); Department of Medicine (Neurology), University of Toronto, 200 Elizabeth Street, Toronto, Ontario M5G 2C4 (Canada); Department of Physiology, University of Toronto Medical Sciences Building, 3rd Floor, 1 King's College Circle, Toronto, Ontario M5S 1A8 (Canada); Ferguson, K. A. [Toronto Western Research Institute, University Health Network, Krembil Discovery Tower, Toronto Western Hospital, 60 Leonard Street, 7th floor, 7KD411, Toronto, Ontario M5T 2S8 (Canada) [Toronto Western Research Institute, University Health Network, Krembil Discovery Tower, Toronto Western Hospital, 60 Leonard Street, 7th floor, 7KD411, Toronto, Ontario M5T 2S8 (Canada); Department of Physiology, University of Toronto Medical Sciences Building, 3rd Floor, 1 King's College Circle, Toronto, Ontario M5S 1A8 (Canada)

    2013-12-15T23:59:59.000Z

    There is an undisputed need and requirement for theoretical and computational studies in Neuroscience today. Furthermore, it is clear that oscillatory dynamical output from brain networks is representative of various behavioural states, and it is becoming clear that one could consider these outputs as measures of normal and pathological brain states. Although mathematical modeling of oscillatory dynamics in the context of neurological disease exists, it is a highly challenging endeavour because of the many levels of organization in the nervous system. This challenge is coupled with the increasing knowledge of cellular specificity and network dysfunction that is associated with disease. Recently, whole hippocampus in vitro preparations from control animals have been shown to spontaneously express oscillatory activities. In addition, when using preparations derived from animal models of disease, these activities show particular alterations. These preparations present an opportunity to address challenges involved with using models to gain insight because of easier access to simultaneous cellular and network measurements, and pharmacological modulations. We propose that by developing and using models with direct links to experiment at multiple levels, which at least include cellular and microcircuit, a cycling can be set up and used to help us determine critical mechanisms underlying neurological disease. We illustrate our proposal using our previously developed inhibitory network models in the context of these whole hippocampus preparations and show the importance of having direct links at multiple levels.

  6. The formation and function of the brain ventricular system

    E-Print Network [OSTI]

    Chang, Jessica T. (Jessica Tzung-Min)

    2012-01-01T23:59:59.000Z

    The brain ventricular system is composed of a highly conserved set of cavities that contain cerebrospinal fluid (CSF), a protein-rich fluid essential for brain function. However, little is known about the function of ...

  7. Classification of whole brain fMRI activation patterns

    E-Print Network [OSTI]

    Balc?, Serdar Kemal

    2008-01-01T23:59:59.000Z

    Functional magnetic resonance imaging (fMRI) is an imaging technology which is primarily used to perform brain activation studies by measuring neural activity in the brain. It is an interesting question whether patterns ...

  8. Innovation flow through social networks: Productivity distribution

    E-Print Network [OSTI]

    T. Di Matteo; T. Aste; M. Gallegati

    2004-06-19T23:59:59.000Z

    A detailed empirical analysis of the productivity of non financial firms across several countries and years shows that productivity follows a non-Gaussian distribution with power law tails. We demonstrate that these empirical findings can be interpreted as consequence of a mechanism of exchanges in a social network where firms improve their productivity by direct innovation or/and by imitation of other firm's technological and organizational solutions. The type of network-connectivity determines how fast and how efficiently information can diffuse and how quickly innovation will permeate or behaviors will be imitated. From a model for innovation flow through a complex network we obtain that the expectation values of the productivity level are proportional to the connectivity of the network of links between firms. The comparison with the empirical distributions reveals that such a network must be of a scale-free type with a power-law degree distribution in the large connectivity range.

  9. Transformation of Networks through Cognitive Approaches

    E-Print Network [OSTI]

    Nair, T R Gopalakrishnan; Sooda, Kavitha

    2010-01-01T23:59:59.000Z

    The growth in data traffic and the increased demand for quality of service has meant current network systems need to be more efficient. The introduction of improved routing systems to meet the increasing demand and varied protocols to accommodate various scales of challenges in network efficiency has further complicated the operations. This means a better mode of intelligence had to be infused into networking for smoother operations and better autonomic features. Cognitive networks are defined and analyzed in this angle. They are identified to have the potential to deal with the future user related quality and efficiency of service at optimized levels. The cognitive elements of system like perception, learning, planning, reasoning and decision forming can enable the systems to be more aware of their environment and offer better services. These approaches are expected to transform the mode of operation of future networks.

  10. Network science: a review focused on tourism

    E-Print Network [OSTI]

    Baggio, R; Cooper, C

    2010-01-01T23:59:59.000Z

    This paper presents a review of the methods of the science of networks with an application to the field of tourism studies. The basic definitions and computational techniques are described and a case study (Elba, Italy) used to illustrate the effect of network typology on information diffusion. A static structural characterization of the network formed by destination stakeholders is derived from stakeholder interviews and website link analysis. This is followed by a dynamic analysis of the information diffusion process within the destination demonstrating that stakeholder cohesion and adaptive capacity have a positive effect on information diffusion. The outcomes and the implications of this analysis for improving destination management are discussed.

  11. Improving Lives. Improving Texas. Agency Strategic Plan

    E-Print Network [OSTI]

    . Williams Administration Building 7101 TAMU September 2009 College Station, TX 77843-7101 Phone: 979. In the context of this broad mission, the priorities for Extension education are: Ensure a sustainable and management. Build local capacity for economic development in Texas communities. Improve the health

  12. NEW INSIGHTS INTO BRAIN SWELLING AFTER STROKE

    E-Print Network [OSTI]

    Sabatini, David M.

    NEW INSIGHTS INTO BRAIN SWELLING AFTER STROKE W Taylor Kimberly MD PhD 6 May 2013 #12;OBJECTIVES · Background: introduction to stroke · Mechanism: types of cerebral edema · Specific target: preclinical data-Pilot imaging and plasma biomarkers · Next steps: GAMES-RP #12;BACKGROUND · 800,000 strokes occur each year · 4

  13. Von Economo Neurons in the Elephant Brain

    E-Print Network [OSTI]

    Allman, John M.

    Von Economo Neurons in the Elephant Brain ATIYA Y. HAKEEM,1 * CHET C. SHERWOOD,2 CHRISTOPHER J elephants. The VENs in the elephant are primarily found in similar locations to those in the other species- nids, cetaceans, and elephants, and may reflect a specialization for the rapid transmission of crucial

  14. Woodpecker pecking: how woodpeckers avoid brain injury

    E-Print Network [OSTI]

    Gibson, Lorna

    Woodpeckers are capable of repeated pecking on a tree at remarkably high decelerations (on the order of 10 000 m s?2 or 1000 g). In this paper, I re-examine previous studies of pecking and scaling effects in brain injury. ...

  15. Possible new wave phenomena in the brain

    E-Print Network [OSTI]

    Jerzy Szwed

    2009-08-10T23:59:59.000Z

    We propose to search for new wave phenomena in the brain by using interference effects in analogy to the well-known double slit (Young) experiment. This method is able to extend the range of oscillation frequencies to much higher values than currently accessible. It is argued that such experiments may test the hypothesis of the wave nature of information coding.

  16. BDP: BrainSuite Diffusion Pipeline

    E-Print Network [OSTI]

    Leahy, Richard M.

    BDP: BrainSuite Diffusion Pipeline Chitresh Bhushan #12; Quantify microstructural tissue ROI Connectivity ROI Statistics MPRAGE Diffusion #12;Diffusion Pipeline Dicom to NIfTI Co ROIs Custom ROIs #12;Diffusion Pipeline Dicom to NIfTI Co-registration Diffusion Modeling Tractography

  17. Probing the brain’s white matter with diffusion MRI and a tissue dependent diffusion model 

    E-Print Network [OSTI]

    Piatkowski, Jakub Przemyslaw

    2014-06-27T23:59:59.000Z

    While diffusion MRI promises an insight into white matter microstructure in vivo, the axonal pathways that connect different brain regions together can only partially be segmented using current methods. Here we present ...

  18. Computational Simulation and Visualization of Traumatic Brain Injuries

    E-Print Network [OSTI]

    Burtscher, Martin

    brain tissue oscillations shed new light on the mechanisms of Closed Head Injuries. Our results may helpComputational Simulation and Visualization of Traumatic Brain Injuries Martin Burtscher School the human brain dynamics in realistic 2D cross-sections during trau- matic scenarios corresponding

  19. XRDS summer 2010 Vol .16 No.442 From Brains

    E-Print Network [OSTI]

    Jacob, Robert J.K.

    XRDS · summer 2010 · Vol .16 · No.442 From Brains to Bytes Although most people are likely all-powerful, BCI research. In the past year, University of Wisconsin-Madison's Brain-Twitter in- terface received Time Magazine's honor as the no. 9 invention of the year. Fur- thermore, as brain

  20. ORIGINAL ARTICLE Early Brain Overgrowth in Autism Associated

    E-Print Network [OSTI]

    Utah, University of

    ORIGINAL ARTICLE Early Brain Overgrowth in Autism Associated With an Increase in Cortical Surface, PhD; Chad Chappell, MA; Rachel Gimpel Smith, BA; Clement Vachet, MS; Joseph Piven, MD Context: Brain. Objective: To investigate early growth trajectories in brain volume and cortical thickness. Design

  1. Numerical Modeling of Brain Dynamics in Traumatic Situations -Impulsive Translations

    E-Print Network [OSTI]

    Burtscher, Martin

    .S.A. Abstract We numerically model the brain dy- namics during and after impulsive head translations using brain injuries appear among boxers and shaken babies despite minimal rotations of their heads. Modeling head translations also helps understand the brain dynamics during head rotations about an arbitrary

  2. Intra-operative Registration for Deep Brain Stimulation Procedures

    E-Print Network [OSTI]

    Boyer, Edmond

    Intra-operative Registration for Deep Brain Stimulation Procedures based on a Full Physics Head´e Rennes I Abstract. Brain deformation is a factor of inaccuracy during stereo- tactic neurosurgeries to update the pre-operative planning based on a physical simulation of the brain shift. A minimization

  3. The Dynamics of Brain-Body-Environment Systems

    E-Print Network [OSTI]

    Menczer, Filippo

    The Dynamics of Brain-Body-Environment Systems in Behavior and Cognition An NSF IGERT Training Program Environment BodyAgent Agent Graduate Traineeships Available in Research Themes * Brain Dynamics the dynamical interaction of brains with bodies, agents with their environments, and agents with other agents

  4. UNSUPERVISED SEGMENTATION FOR AUTOMATIC DETECTION OF BRAIN TUMORS IN MRI

    E-Print Network [OSTI]

    Lefèvre, Sébastien

    UNSUPERVISED SEGMENTATION FOR AUTOMATIC DETECTION OF BRAIN TUMORS IN MRI A.S. Capelle, O. Alata, C- thod for magnetic resonance images. The aim of this seg- mentation is to divide the brain a pre-segmentation to ex- tract the brain from the head. Then, a second segmentation is done inside

  5. Brief Communications Why Sex Matters: Brain Size Independent Differences in

    E-Print Network [OSTI]

    Gaser, Christian

    Brief Communications Why Sex Matters: Brain Size Independent Differences in Gray Matter, Germany The different brain anatomy of men and women is both a classic and continuing topic of major interest. Among the most replicated and robust sex differences are larger overall brain dimensions in men

  6. Functional Geometry Alignment and Localization of Brain Areas

    E-Print Network [OSTI]

    Golland, Polina

    Functional Geometry Alignment and Localization of Brain Areas Georg Langs, Polina Golland Computer@bwh.harvard.edu, lrigolo@bwh.harvard.edu agolby@bwh.harvard.edu Abstract Matching functional brain regions across. It is particularly difficult, but highly relevant, for patients with pathologies such as brain tumors, which can

  7. Brain donation is one of the most important contributions to

    E-Print Network [OSTI]

    Contractor, Anis

    01-19-09 Brain donation is one of the most important contributions to research. As researchers work to better understand disorders that affect mental function with aging, brain donations are essential to their progress. By studying the anatomy, pathology, and chemistry of the brains of people with memory problems

  8. COMPARING THE EMOTIONAL BRAINS OF HUMANS AND OTHER ANIMALS

    E-Print Network [OSTI]

    Berridge, Kent

    25 3 COMPARING THE EMOTIONAL BRAINS OF HUMANS AND OTHER ANIMALS Kent C. Berridge How is emotion embodied in the brain? That is the ques- tion posed by affective neuroscience (Cacioppo & Gardner, 1999 and emotion at both psychological and neurobiological levels. Evidence regarding the brain substrates

  9. Introduction The vertebrate brain has a characteristic and complex three-

    E-Print Network [OSTI]

    Lowery, Laura Anne

    2057 Introduction The vertebrate brain has a characteristic and complex three- dimensional structure, the development of which is not well understood. Brain morphogenesis begins during, and continues subsequent to, neural tube closure. One aspect of brain structure that is highly conserved throughout

  10. A conserved pattern of brain scaling from sharks to primates

    E-Print Network [OSTI]

    Finlay, Barbara L.

    A conserved pattern of brain scaling from sharks to primates Kara E. Yopaka,b,1 , Thomas J. Lisneyc June 4, 2010 (received for review February 23, 2010) Several patterns of brain allometry previously. In each clade, the relative size of brain parts, with the notable exception of the olfactory bulbs

  11. Brains, maturation times, and parenting John Allman*, Andrea Hasenstaub

    E-Print Network [OSTI]

    Allman, John M.

    Commentary Brains, maturation times, and parenting John Allman*, Andrea Hasenstaub Division have favored the evolution of genes that retard brain senescence, specifically recently evolved, and the influence of this slow development on parental dependence and patterns of survival. Large brains are ex

  12. Automatic Segmentation of Neonatal Brain MRI Marcel Prastawa, 2

    E-Print Network [OSTI]

    Prastawa, Marcel

    Automatic Segmentation of Neonatal Brain MRI 1 Marcel Prastawa, 2 John Gilmore, 3 Weili Lin, and 1 segmentation method for neonatal MRI. The analysis and study of neonatal brain MRI is of great interest due probabilistic brain atlas to select training samples and to be used as a spatial prior. The method first uses

  13. STOCKER FLY BRAIN IMMUNOFLUORESCENCE PROTOCOL January 8, 2001

    E-Print Network [OSTI]

    1 STOCKER FLY BRAIN IMMUNOFLUORESCENCE PROTOCOL January 8, 2001 Vosshall Lab 1. Anesthetize flies the brain, starting with the removal of the proboscis. Gently peel away the cuticle at the back of the fly the esophagus (hole in brain). Once all the cuticle has been removed, gently remove the fat body and trachea

  14. New Approaches in Brain-Computer Music Interfacing

    E-Print Network [OSTI]

    Miranda, Eduardo Reck

    New Approaches in Brain-Computer Music Interfacing Mapping EEG for Real-Time Musical Control Eaton-going research into the creation of performance and compositional tools using a Brain- Computer Music Interface) for performance, and highlights the need for further practice-led research in this field. Keywords- brain, music

  15. The brain near the edge Dante R. Chialvo

    E-Print Network [OSTI]

    Chialvo, Dante R.

    The brain near the edge Dante R. Chialvo Department of Physiology, Feinberg Medical School grain, the brain seems a relatively small dynamical system composed by a few dozen interacting areas that some of the most fundamental properties of the functioning brain are possible because

  16. and the Brain Sound may seem a straightforward physical phenom-

    E-Print Network [OSTI]

    Hill, Wendell T.

    Hearing and the Brain Sound may seem a straightforward physical phenom- enon, whose waves can be recorded, charted and parsed. But no machines can do what the human brain does--understand a wide variety of electrical and computer engineering and member of the Institute for Systems Research, studies how the brain

  17. DISCOVERING BRAIN MECHANISMS AND THE RULES OF MOLECULAR

    E-Print Network [OSTI]

    Stengel, Robert F.

    DISCOVERING BRAIN MECHANISMS AND THE RULES OF MOLECULAR BIOLOGY Paul Shapshak, PhD*1 and Robert-324-2723 ABSTRACT The human genome has approximately 30,000 genes. Brain cells express at least 15,000. The human brain is subject to many acute and chronic diseases including viral encephalitis, AIDS/HIV Associated

  18. POSTER PRESENTATION Open Access Spatiotemporal dynamics in the human brain

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    POSTER PRESENTATION Open Access Spatiotemporal dynamics in the human brain during rest: a virtual brain study Andreas Spiegler* , Enrique Hansen, Viktor K Jirsa From Twenty Second Annual Computational Neuroscience Meeting: CNS*2013 Paris, France. 13-18 July 2013 Over the past years the ongoing human brain

  19. BRAIN ATLASES AND REGISTRATION Arthur W. Toga and Paul Thompson

    E-Print Network [OSTI]

    Thompson, Paul

    1 BRAIN ATLASES AND REGISTRATION Arthur W. Toga and Paul Thompson Laboratory of Neuro Imaging, Dept. of Neurology, Division of Brain Mapping, UCLA School of Medicine, Los Angeles, CA A Book Chapter for: Handbook and Stroke and the National Institute of Mental Health (NINDS/NIMH NS38753), and by a Human Brain Project

  20. Development of an Interhemispheric Symmetry Measurement in the Neonatal Brain

    E-Print Network [OSTI]

    Development of an Interhemispheric Symmetry Measurement in the Neonatal Brain Ninah Koolen1.dereymaeker, katrien.jansen, jan.vervisch, gunnar.naulaers}@uzleuven.be Keywords: Preterm Brain, Symmetry, Channel of different brain regions will allow detecting physiologic asymmetry versus pathologic asymmetry. This can

  1. BRAIN AND SURFACE WARPING VIA MINIMIZING LIPSCHITZ EXTENSIONS

    E-Print Network [OSTI]

    BRAIN AND SURFACE WARPING VIA MINIMIZING LIPSCHITZ EXTENSIONS By Facundo M´emoli Guillermo Sapiro­0436 Phone: 612/624-6066 Fax: 612/626-7370 URL: http://www.ima.umn.edu #12;Brain and Surface Warping via connection with the infinity Laplacian, a computational framework for surface warping and in particular brain

  2. Traumatic Brain Injury Dr Seena Fazel & Prof. Huw Williams

    E-Print Network [OSTI]

    Mumby, Peter J.

    Traumatic Brain Injury and Crime Dr Seena Fazel & Prof. Huw Williams NHS Centre for Clinical Neuropsychological Research (CCNR) #12;Traumatic Brain Injury (TBI) Moderate-Severe TBI (e.g. 30 mins + LoC) ­ insult to the brain from an external mechanical force. ­ E.g. blow to the head - "fast- stop" in a crash

  3. Brain (1999), 122, 839854 Electrophysiological manifestations of open-and

    E-Print Network [OSTI]

    Coulson, Seana

    Brain (1999), 122, 839­854 Electrophysiological manifestations of open- and closed-class words in patients with Broca's aphasia with agrammatic comprehension An event-related brain potential study Mariken-related brain potentials were recorded from the scalp when Broca patients and non- aphasic control subjects were

  4. COMBINATION OF BRAIN CONFORMAL MAPPING AND LANDMARKS: A VARIATIONAL APPROACH

    E-Print Network [OSTI]

    Wang, Yalin

    COMBINATION OF BRAIN CONFORMAL MAPPING AND LANDMARKS: A VARIATIONAL APPROACH Yalin Wang Mathematics brain data, data from multiple subjects are typically mapped into a canonical space. One method to do be mapped conformally to a sphere. Since the cortical surface of the brain is a genus zero surface, con

  5. Human brain cancer studied by resonance Raman spectroscopy

    E-Print Network [OSTI]

    Sun, Yi

    Human brain cancer studied by resonance Raman spectroscopy Yan Zhou Cheng-Hui Liu Yi Sun Yang Pu://biomedicaloptics.spiedigitallibrary.org/ on 11/16/2012 Terms of Use: http://spiedl.org/terms #12;Human brain cancer studied by resonance Raman of human brain tissues are examined using a confocal micro-Raman system with 532-nm excitation in vitro

  6. Analyzing 3D Images of the Brain NICHOLAS AYACHE

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Analyzing 3D Images of the Brain NICHOLAS AYACHE OVERVIEW During the past 5 years, there has been research. Along these lines, and focusing on 3D images of the brain obtained with CT, MRI, SPECT, and PET for an objective analysis of 3D images of the brain. Such methods include segmentation, shape analysis, rigid

  7. Chemically-selective imaging of brain structures with CARS microscopy

    E-Print Network [OSTI]

    Xie, Xiaoliang Sunney

    Chemically-selective imaging of brain structures with CARS microscopy Conor L. Evans1§ , Xiaoyin Xu anti-Stokes Raman scattering (CARS) microscopy to image brain structure and pathology ex vivo. Although. Definitive diagnosis still requires brain biopsy in a significant number of cases. CARS microscopy

  8. ELSEVIER Brain Research 712 (1996) 293-298 Research report

    E-Print Network [OSTI]

    Tepper, James M.

    BRAIN RESEARCH ELSEVIER Brain Research 712 (1996) 293-298 Research report Local infusion of brain examined the effects of local infusion of BDNF on the electrophysioiogical activity of serotonergic neurons in the rat dorsal raph6 nucleus with extracellular single unit recording in vivo. Compared with vehicle-infused

  9. Network Connections

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary)morphinanInformation Desert Southwest Regionat Cornell Batteries &NSTCurrent Issues &Network » Network

  10. Routing algorithms for large scale wireless sensor networks

    E-Print Network [OSTI]

    Nittala Venkata, Lakshmana Prasanth

    2005-02-17T23:59:59.000Z

    such as power, memory, and CPU processing capabilities. In this thesis, we assume an All to All communication mode in an N ? N grid sensor network. We explore routing algorithms which load balance the network without compromising the shortest paths constrain. We... failed nodes). In static network case, we derived mathematical formulae representing the maximum and minimum loads on a sensor grid, when specific routing strategies are employed. We show improvement in performance in load balancing of the grid by using...

  11. Speed Training: Improving the Rate of Backpropagation Learning through Stochastic Sample Presentation

    E-Print Network [OSTI]

    Martinez, Tony R.

    Speed Training: Improving the Rate of Backpropagation Learning through Stochastic Sample. However, using complex neural networks to learn very large training sets is often problematic, imposing prohibitive time constraints on the training process. We present four practical methods for dramatically

  12. Advanced Credentialing for Trusted Networks

    Energy Innovation Portal (Marketing Summaries) [EERE]

    2012-08-21T23:59:59.000Z

    During and following disasters, rapid, valid systems are needed to exchange information—among emergency responders, with others in the community, and with the outside world. ORNL researchers have developed a Web 2.0 credentialing system that offers greater assurance of the validity of information on social networks and media and the potential to thus improve and enhance the unimpeded flow of vetted information and resources during and following a disaster to assist impacted areas and...

  13. Interconnecting PV on New York City's Secondary Network Distribution System

    SciTech Connect (OSTI)

    Anderson, K.; Coddington, M.; Burman, K.; Hayter, S.; Kroposki, B.; Watson, A.

    2009-12-01T23:59:59.000Z

    This study describes technical assistance provided by NREL to help New York City and Con Edison improve the interconnection of distributed PV systems on a secondary network distribution system.

  14. Digital neural network-based modeling technique for extrusion processes

    E-Print Network [OSTI]

    Jang, Won-Hyouk

    2001-01-01T23:59:59.000Z

    and market conditions. In order to develop reliable and well-performing advanced process monitoring and diagnostic systems for achieving improved product quality and cost-effective operation, the neural network-based modeling technique for the extrusion...

  15. The Houston Lightning Mapping Array: Network Installation and Preliminary Analysis

    E-Print Network [OSTI]

    Cullen, Matthew Ryan

    2013-06-25T23:59:59.000Z

    of the Houston LMA network are twofold: first, to provide a dataset enabling research into thunderstorm electrification in the context of a coastal, urban, polluted environment; and second, to enable improvements in operational forecasting and public safety...

  16. Integrated assessment of quality of supply in future electricity networks 

    E-Print Network [OSTI]

    Hernando Gil, Ignacio

    2014-11-27T23:59:59.000Z

    Although power system reliability analysis is a mature research area, there is a renewed interest in updating available network models and formulating improved reliability assessment procedures. The main driver of this ...

  17. Adaptive sampling and forecasting with mobile sensor networks

    E-Print Network [OSTI]

    Choi, Han-Lim

    2009-01-01T23:59:59.000Z

    This thesis addresses planning of mobile sensor networks to extract the best information possible out of the environment to improve the (ensemble) forecast at some verification region in the future. To define the information ...

  18. Flexible Networks as a Means to Enhance Rural

    E-Print Network [OSTI]

    Wu, Qinglin

    networks that can improve the efficiency of society by facilitating coordinated actions. In particular, organizational development, small business management and entrepreneurship, sociological, and rural development organizational form. In addition, insights into the problems or obstacles facing small and medium sized

  19. autori uis olte: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Websites Summary: The Why UI: Using Goal Networks to Improve User Interfaces Dustin A. Smith MIT Media Lab 20 Ames St; Cambridge, MA 02139 dustin@media.mit.edu Henry Lieberman...

  20. Building indicator groups based on species characteristics can improve conservation planning

    E-Print Network [OSTI]

    Manne, Lisa

    is in identifying important areas for the conservation of biodiversity. As networks of areas encompassing biodiversity to select networks of areas for conservation? In the literature, reliable indicator groupsBuilding indicator groups based on species characteristics can improve conservation planning

  1. TR-IIS-11-004 An Integrated Network Mobility

    E-Print Network [OSTI]

    Chen, Sheng-Wei

    TR-IIS-11-004 An Integrated Network Mobility Management and Call Admission Control Scheme/tr11.html #12;An Integrated Network Mobility Management and Call Admission Control Scheme improvements however, are clashing with similarly impressive achievements in smart mobile device technology

  2. Safety Criteria and Safety Lifecycle for Artificial Neural Networks

    E-Print Network [OSTI]

    Kelly, Tim

    Safety Criteria and Safety Lifecycle for Artificial Neural Networks Zeshan Kurd, Tim Kelly and Jim performance based techniques that aim to improve the safety of neural networks for safety critical applications. However, many of these techniques provide inadequate forms of safety arguments required

  3. Safety Lifecycle for Developing Safety Critical Artificial Neural Networks

    E-Print Network [OSTI]

    Kelly, Tim

    Safety Lifecycle for Developing Safety Critical Artificial Neural Networks Zeshan Kurd, Tim Kelly. There are many techniques that aim to improve the performance of neural networks for safety-critical systems. Consequently, their role in safety-critical applications, if any, is typically restricted to advisory systems

  4. Energy-Efficient Capacity Optimization in Wireless Networks

    E-Print Network [OSTI]

    Wang, Yu

    Energy-Efficient Capacity Optimization in Wireless Networks Lu Liu, Xianghui Cao, Yu Cheng, Lili Du capacity in the most energy-efficient manner over a general large-scale wireless network, say, a multi numerical results demonstrate the energy efficiency improvement by the proposed energy-efficient

  5. Censored Truncated Sequential Spectrum Sensing for Cognitive Radio Networks

    E-Print Network [OSTI]

    Leus, Geert

    1 Censored Truncated Sequential Spectrum Sensing for Cognitive Radio Networks Sina Maleki Geert Leus Abstract Reliable spectrum sensing is a key functionality of a cognitive radio network. Cooperative spectrum sensing improves the detection reliability of a cognitive radio system but also increases

  6. APAWSAN: Actor Positioning for Aerial Wireless Sensor and Actor Networks

    E-Print Network [OSTI]

    Turgut, Damla

    to be autonomous during deployment. The recent advances in development of small unmanned aerial vehicles (UAVs stations can improve network performance measures such as energy consumption and traffic load balancing vehicles (UAVs) with built in sensors made it possible to deploy aerial sensor and actor networks

  7. Copyright ! 2009 200902-Social Networking for Sustainable Building Practices

    E-Print Network [OSTI]

    Lepech, Michael D.

    these stakeholders as a living community that must work together to improve the sustainability of buildings over allCopyright ! 2009 200902- Social Networking for Sustainable Building Practices CIFE TAC 2009 1 Social Networking for Sustainable Building Practices CIFE Proposal 200902 PIs: Mike Lepech, Martin

  8. Tourism networks and computer networks

    E-Print Network [OSTI]

    Baggio, Rodolfo

    2008-01-01T23:59:59.000Z

    The body of knowledge accumulated in recent years on the structure and the dynamics of complex networks has offered useful insights on the behaviour of many natural and artificial complex systems. The analysis of some of these, namely those formed by companies and institutions, however, has proved problematical mainly for the difficulties in collecting a reasonable amount of data. This contribution argues that the World Wide Web can provide an efficient and effective way to gather significant samples of networked socio-economic systems to be used for network analyses and simulations. The case discussed refers to a tourism destination, the fundamental subsystem of an industry which can be considered one of the most important in today's World economy.

  9. Reference Models and Incentive Regulation of Electricity Distribution Networks: An Evaluation of Sweden’s Network Performance Assessment Model (NPAM)

    E-Print Network [OSTI]

    Jamasb, Tooraj; Pollitt, Michael G.

    The world-wide electricity sector reforms have led to a search for alternative and innovative approaches to regulation to promote efficiency improvement in the natural monopoly electricity networks. A number of countries have used incentive...

  10. Improving Attack Graph Visualization through Data Reduction and Attack Grouping

    E-Print Network [OSTI]

    Ou, Xinming "Simon"

    Improving Attack Graph Visualization through Data Reduction and Attack Grouping John Homer1 Laboratory, USA Abstract. Various tools exist to analyze enterprise network systems and to produce attack graphs detailing how attackers might penetrate into the system. These attack graphs, however, are often

  11. Case Studies—Financing Energy Improvements on Utility Bills

    Broader source: Energy.gov [DOE]

    Hosted by Technical Assistance Program (TAP), the State and Local Energy Efficiency Action Network (SEE Action), and Lawrence Berkeley National Laboratory's Electricity Market and Policy Group, this webinar was the second of a two-part webinar series focused on the new report, Financing Energy Improvements on Utility Bills: Market Updates and Key Program Design Considerations for Policymakers and Administrators.

  12. 1/12/11 1:51 PMComputer-Aided Brains: Scientific American Page 1 of 3http://www.scientificamerican.com/article.cfm?id=computer-aided-brains

    E-Print Network [OSTI]

    Salvucci, Dario D.

    » Scientific American Mind » October 2005 Head Lines | Mind & Brain Computer-Aided Brains By Brad Stenger1/12/11 1:51 PMComputer-Aided Brains: Scientific American Page 1 of 3http://www.scientificamerican.com/article.cfm?id=computer-aided-brains Image: For years, innovators have tried to devise computerized gadgetry to aid the brain. Advances have

  13. In: Proceedings of SPIE Conference on Medical Imaging (4684), pp. 201-205, Feb. 2002. Robustness of the Brain Parenchymal Fraction for Measuring Brain

    E-Print Network [OSTI]

    Orchard, Jeffery J.

    of the Brain Parenchymal Fraction for Measuring Brain Atrophy M. Stella Atkins, Jeff J. Orchard, Ben Law ABSTRACT Other researchers have proposed that the brain parenchymal fraction (or brain atrophy) may considers various factors influencing the measure of the brain parenchymal fraction obtained from dual spin

  14. EXCELLENTIA CoLumbIA ENgINEErINg22 eople suffering from brain diseases and conditions ranging from traumatic brain

    E-Print Network [OSTI]

    Hone, James

    HEALTH EXCELLENTIA CoLumbIA ENgINEErINg22 P eople suffering from brain diseases and conditions ranging from traumatic brain injury to brain cancer to progressive brain disorders could be helped if therapeu- tic drugs could be easily delivered to the affected areas. The blood-brain barrier (BBB

  15. Improved solid aerosol generator

    DOE Patents [OSTI]

    Prescott, D.S.; Schober, R.K.; Beller, J.

    1988-07-19T23:59:59.000Z

    An improved solid aerosol generator used to produce a gas borne stream of dry, solid particles of predetermined size and concentration. The improved solid aerosol generator nebulizes a feed solution of known concentration with a flow of preheated gas and dries the resultant wet heated aerosol in a grounded, conical heating chamber, achieving high recovery and flow rates. 2 figs.

  16. Can we neglect the multi-layer structure of functional networks?

    E-Print Network [OSTI]

    Zanin, Massimiliano

    2015-01-01T23:59:59.000Z

    Functional networks, i.e. networks representing dynamic relationships between the components of a complex system, have been instrumental for our understanding of, among others, the human brain. Due to limited data availability, the multi-layer nature of numerous functional networks has hitherto been neglected, and nodes are endowed with a single type of links even when multiple relationships coexist at different physical levels. A relevant problem is the assessment of the benefits yielded by studying a multi-layer functional network, against the simplicity guaranteed by the reconstruction and use of the corresponding single layer projection. Here, I tackle this issue by using as a test case, the functional network representing the dynamics of delay propagation through European airports. Neglecting the multi-layer structure of a functional network has dramatic consequences on our understanding of the underlying system, a fact to be taken into account when a projection is the only available information.

  17. Combining a recurrent neural network and a PID controller for prognostic purpose

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Combining a recurrent neural network and a PID controller for prognostic purpose A way to improve Basis Function network (RRBF) and a proportional integral derivative controller (PID) is proposed in order to improve the accuracy of predictions. The PID controller attempts to correct the error between

  18. Improving performance of reflectance diffuse optical imaging using a multicentered mode

    E-Print Network [OSTI]

    Jiang,Tianzi

    DOI, near-infrared light irradiates the brain tissues through optical fibers, and is received by detec- tors multicentered mode for arrangement of optical fibers to improve the imaging performance of reflectance dif- fuse, such overlapping measurements were mainly obtained by the geometric ar- rangement of optical fibers. Several

  19. Double-ring network model of the head-direction system Xiaohui Xie,1,

    E-Print Network [OSTI]

    Xie, Xiaohui Sunney

    Double-ring network model of the head-direction system Xiaohui Xie,1, * Richard H. R. Hahnloser,1,2 and H. Sebastian Seung1,2 1 Department of Brain and Cognitive Sciences, Massachusetts Institute 2002; published 9 October 2002 In the head-direction system, the orientation of an animal's head

  20. Web Service for Extracting Stream Networks from DEM Data , I. Molloyc

    E-Print Network [OSTI]

    Stepinski, Tomasz F.

    possible with recent advances in Service-Oriented Architecture (SOA), geospatial Web ServicesWeb Service for Extracting Stream Networks from DEM Data W. Luo*a , X. Lib , I. Molloyc , L. Dib as a Web Service within the framework of GeoBrain, an open, interoperable, distributed, standard

  1. A Phase 3 Trial of Whole Brain Radiation Therapy and Stereotactic Radiosurgery Alone Versus WBRT and SRS With Temozolomide or Erlotinib for Non-Small Cell Lung Cancer and 1 to 3 Brain Metastases: Radiation Therapy Oncology Group 0320

    SciTech Connect (OSTI)

    Sperduto, Paul W., E-mail: psperduto@mropa.com [Metro MN CCOP, Minneapolis, Minnesota (United States); Wang, Meihua [RTOG Statistical Center, Philadelphia, Pennsylvania (United States)] [RTOG Statistical Center, Philadelphia, Pennsylvania (United States); Robins, H. Ian [University of Wisconsin Medical School Cancer Center, Madison, Wisconsin (United States)] [University of Wisconsin Medical School Cancer Center, Madison, Wisconsin (United States); Schell, Michael C. [Wilmot Cancer Center, University of Rochester, Rochester, New York (United States)] [Wilmot Cancer Center, University of Rochester, Rochester, New York (United States); Werner-Wasik, Maria [Thomas Jefferson University, Philadelphia, Pennsylvania (United States)] [Thomas Jefferson University, Philadelphia, Pennsylvania (United States); Komaki, Ritsuko [University of Texas MD Anderson Cancer Center, Houston, Texas (United States)] [University of Texas MD Anderson Cancer Center, Houston, Texas (United States); Souhami, Luis [McGill University, Montreal, Quebec (Canada)] [McGill University, Montreal, Quebec (Canada); Buyyounouski, Mark K. [Fox Chase Cancer Center, Philadelphia, Pennsylvania (United States)] [Fox Chase Cancer Center, Philadelphia, Pennsylvania (United States); Khuntia, Deepak [University of Wisconsin Hospital, Madison, Wisconsin (United States)] [University of Wisconsin Hospital, Madison, Wisconsin (United States); Demas, William [Akron City Hospital, Akron, Ohio (United States)] [Akron City Hospital, Akron, Ohio (United States); Shah, Sunjay A. [Christiana Care Health Services, Inc, CCOP, Newark, Delaware (United States)] [Christiana Care Health Services, Inc, CCOP, Newark, Delaware (United States); Nedzi, Lucien A. [University of Texas Southwestern Medical School, Dallas, Texas (United States)] [University of Texas Southwestern Medical School, Dallas, Texas (United States); Perry, Gad [The Ottawa Hospital Cancer Centre, Ottawa, Ontario (Canada)] [The Ottawa Hospital Cancer Centre, Ottawa, Ontario (Canada); Suh, John H. [Cleveland Clinic Foundation, Cleveland, Ohio (United States)] [Cleveland Clinic Foundation, Cleveland, Ohio (United States); Mehta, Minesh P. [Northwestern Memorial Hospital, Chicago, Illinois (United States)] [Northwestern Memorial Hospital, Chicago, Illinois (United States)

    2013-04-01T23:59:59.000Z

    Background: A phase 3 Radiation Therapy Oncology Group (RTOG) study subset analysis demonstrated improved overall survival (OS) with the addition of stereotactic radiosurgery (SRS) to whole brain radiation therapy (WBRT) in non-small cell lung cancer (NSCLC) patients with 1 to 3 brain metastases. Because temozolomide (TMZ) and erlotinib (ETN) cross the blood-brain barrier and have documented activity in NSCLC, a phase 3 study was designed to test whether these drugs would improve the OS associated with WBRT + SRS. Methods and Materials: NSCLC patients with 1 to 3 brain metastases were randomized to receive WBRT (2.5 Gy × 15 to 37.5 Gy) and SRS alone, versus WBRT + SRS + TMZ (75 mg/m{sup 2}/day × 21 days) or ETN (150 mg/day). ETN (150 mg/day) or TMZ (150-200 mg/m{sup 2}/day × 5 days/month) could be continued for as long as 6 months after WBRT + SRS. The primary endpoint was OS. Results: After 126 patients were enrolled, the study closed because of accrual limitations. The median survival times (MST) for WBRT + SRS, WBRT + SRS + TMZ, and WBRT + SRS + ETN were qualitatively different (13.4, 6.3, and 6.1 months, respectively), although the differences were not statistically significant. Time to central nervous system progression and performance status at 6 months were better in the WBRT + SRS arm. Grade 3 to 5 toxicity was 11%, 41%, and 49% in arms 1, 2, and 3, respectively (P<.001). Conclusion: The addition of TMZ or ETN to WBRT + SRS in NSCLC patients with 1 to 3 brain metastases did not improve survival and possibly had a deleterious effect. Because the analysis is underpowered, these data suggest but do not prove that increased toxicity was the cause of inferior survival in the drug arms.

  2. A Phase I Study of Short-Course Accelerated Whole Brain Radiation Therapy for Multiple Brain Metastases

    SciTech Connect (OSTI)

    Caravatta, Luciana; Deodato, Francesco; Ferro, Marica [Department of Radiation Oncology, Fondazione di Ricerca e Cura 'Giovanni Paolo II', Universita Cattolica del S. Cuore, Campobasso (Italy)] [Department of Radiation Oncology, Fondazione di Ricerca e Cura 'Giovanni Paolo II', Universita Cattolica del S. Cuore, Campobasso (Italy); Macchia, Gabriella, E-mail: gmacchia@rm.unicatt.it [Department of Radiation Oncology, Fondazione di Ricerca e Cura 'Giovanni Paolo II', Universita Cattolica del S. Cuore, Campobasso (Italy)] [Department of Radiation Oncology, Fondazione di Ricerca e Cura 'Giovanni Paolo II', Universita Cattolica del S. Cuore, Campobasso (Italy); Massaccesi, Mariangela [Department of Radiation Oncology, Fondazione di Ricerca e Cura 'Giovanni Paolo II', Universita Cattolica del S. Cuore, Campobasso (Italy)] [Department of Radiation Oncology, Fondazione di Ricerca e Cura 'Giovanni Paolo II', Universita Cattolica del S. Cuore, Campobasso (Italy); Cilla, Savino [Medical Physics Unit, Fondazione di Ricerca e Cura 'Giovanni Paolo II,' Universita Cattolica del S. Cuore, Campobasso (Italy)] [Medical Physics Unit, Fondazione di Ricerca e Cura 'Giovanni Paolo II,' Universita Cattolica del S. Cuore, Campobasso (Italy); Padula, Gilbert D.A. [Department of Radiation Oncology, The Lacks Cancer Center Saint Mary's Health Care, Grand Rapids, Michigan (United States)] [Department of Radiation Oncology, The Lacks Cancer Center Saint Mary's Health Care, Grand Rapids, Michigan (United States); Mignogna, Samantha; Tambaro, Rosa [Department of Palliative Therapies, Fondazione di Ricerca e Cura 'Giovanni Paolo II', Universita Cattolica del S. Cuore, Campobasso (Italy)] [Department of Palliative Therapies, Fondazione di Ricerca e Cura 'Giovanni Paolo II', Universita Cattolica del S. Cuore, Campobasso (Italy); Carrozza, Francesco [Department of Oncology, A. Cardarelli Hospital, Campobasso (Italy)] [Department of Oncology, A. Cardarelli Hospital, Campobasso (Italy); Flocco, Mariano [Madre Teresa di Calcutta Hospice, Larino (Italy)] [Madre Teresa di Calcutta Hospice, Larino (Italy); Cantore, Giampaolo [Department of Neurological Sciences, Istituto Neurologico Mediterraneo Neuromed, Istituto di Ricovero e Cura a Carattere Scientifico, Pozzilli (Italy)] [Department of Neurological Sciences, Istituto Neurologico Mediterraneo Neuromed, Istituto di Ricovero e Cura a Carattere Scientifico, Pozzilli (Italy); Scapati, Andrea [Department of Radiation Oncology, 'San Francesco' Hospital, Nuoro (Italy)] [Department of Radiation Oncology, 'San Francesco' Hospital, Nuoro (Italy); Buwenge, Milly [Department of Radiotherapy, Mulago Hospital, Kampala (Uganda)] [Department of Radiotherapy, Mulago Hospital, Kampala (Uganda); and others

    2012-11-15T23:59:59.000Z

    Purpose: To define the maximum tolerated dose (MTD) of a SHort-course Accelerated whole brain RadiatiON therapy (SHARON) in the treatment of patients with multiple brain metastases. Methods and Materials: A phase 1 trial in 4 dose-escalation steps was designed: 12 Gy (3 Gy per fraction), 14 Gy (3.5 Gy per fraction), 16 Gy (4 Gy per fraction), and 18 Gy (4.5 Gy per fraction). Eligibility criteria included patients with unfavorable recursive partitioning analysis (RPA) class > or =2 with at least 3 brain metastases or metastatic disease in more than 3 organ systems, and Eastern Cooperative Oncology Group (ECOG) performance status {<=}3. Treatment was delivered in 2 days with twice-daily fractionation. Patients were treated in cohorts of 6-12 to define the MTD. The dose-limiting toxicity (DLT) was defined as any acute toxicity {>=}grade 3, according to the Radiation Therapy Oncology Group scale. Information on the status of the main neurologic symptoms and quality of life were recorded. Results: Characteristics of the 49 enrolled patients were as follows: male/female, 30/19; median age, 66 years (range, 23-83 years). ECOG performance status was <3 in 46 patients (94%). Fourteen patients (29%) were considered to be in recursive partitioning analysis (RPA) class 3. Grade 1-2 acute neurologic (26.4%) and skin (18.3%) toxicities were recorded. Only 1 patient experienced DLT (neurologic grade 3 acute toxicity). With a median follow-up time of 5 months (range, 1-23 months), no late toxicities have been observed. Three weeks after treatment, 16 of 21 symptomatic patients showed an improvement or resolution of presenting symptoms (overall symptom response rate, 76.2%; confidence interval 0.95: 60.3-95.9%). Conclusions: Short-course accelerated radiation therapy in twice-daily fractions for 2 consecutive days is tolerated up to a total dose of 18 Gy. A phase 2 study has been planned to evaluate the efficacy on overall survival, symptom control, and quality of life indices.

  3. Network Embedded Systems Sensor Networks

    E-Print Network [OSTI]

    Amir, Yair

    Battery Energy Reserve Manager = Bank Each task requests an account with conditions W ­ fraction Tracking 9 #12;Virtual Battery: An Energy Reserve Abstraction for Embedded Sensor Networks Qing Cao of real battery allocated N ­ number of energy installments L ­ expected lifetime of the task C

  4. Dosimetric Comparison Between 3DCRT and IMRT Using Different Multileaf Collimators in the Treatment of Brain Tumors

    SciTech Connect (OSTI)

    Ding Meisong [Radiation Oncology Department, University of Colorado Heath Science Center, Aurora, CO (United States)], E-mail: Meisong.Ding@uchsc.edu; Newman, Francis M.S.; Chen Changhu; Stuhr, Kelly; Gaspar, Laurie E. [Radiation Oncology Department, University of Colorado Heath Science Center, Aurora, CO (United States)

    2009-04-01T23:59:59.000Z

    We investigated the differences between 3-dimensional conformal radiotherapy (3DCRT) and intensity modulated radiotherapy (IMRT), and the impact of collimator leaf-width on IMRT plans for the treatment of nonspherical brain tumors. Eight patients treated by 3DCRT with Novalis were selected. We developed 3 IMRT plans with different multileaf collimators (Novalis m3, Varian MLC-120, and Varian MLC-80) with the same treatment margins, number of beams, and gantry positions as in the 3DCRT treatment plans. Treatment planning utilized the BrainLAB treatment planning system. For each patient, the dose constraints and optimization parameters remained identical for all plans. The heterogeneity index, the percentage target coverage, critical structures, and normal tissue volumes receiving 50% of the prescription dose were calculated to compare the dosimetric difference. Equivalent uniform dose (EUD) and tumor control probability (TCP) were also introduced to evaluate the radiobiological effect for different plans. We found that IMRT significantly improved the target dose homogeneity compared to the 3DCRT. However, IMRT showed the same radiobiological effect as 3DCRT. For the brain tumors adjacent to (or partially overlapping with) critical structures, IMRT dramatically spared the volume of the critical structures to be irradiated. In IMRT plans, the smaller collimator leaf width could reduce the volume of critical structures irradiated to the 50% level for those partially overlapping with the brain tumors. For relatively large and spherical brain tumors, the smaller collimator leaf widths give no significant benefit.

  5. Brain-Computer Interfaces and Quantum Robots

    E-Print Network [OSTI]

    Eliano Pessa; Paola zizzi

    2009-09-08T23:59:59.000Z

    The actual (classical) Brain-Computer Interface attempts to use brain signals to drive suitable actuators performing the actions corresponding to subject's intention. However this goal is not fully reached, and when BCI works, it does only in particular situations. The reason of this unsatisfactory result is that intention cannot be conceived simply as a set of classical input-output relationships. It is therefore necessary to resort to quantum theory, allowing the occurrence of stable coherence phenomena, in turn underlying high-level mental processes such as intentions and strategies. More precisely, within the context of a dissipative Quantum Field Theory of brain operation it is possible to introduce generalized coherent states associated, within the framework of logic, to the assertions of a quantum metalanguage. The latter controls the quantum-mechanical computing corresponding to standard mental operation. It thus become possible to conceive a Quantum Cyborg in which a human mind controls, through a quantum metalanguage, the operation of an artificial quantum computer.

  6. Recent Improvements in DDT

    E-Print Network [OSTI]

    Edwards, D.J.

    1963-11-01T23:59:59.000Z

    This paper will report new developments and recent improvements to DDT. "Window DDT" now will remember undefined symbols and define them on a later command. Using sequence breaks, it can change the contents of memory while ...

  7. Connecting to the Internet Securely; Protecting Home Networks CIAC-2324

    SciTech Connect (OSTI)

    Orvis, W J; Krystosek, P; Smith, J

    2002-11-27T23:59:59.000Z

    With more and more people working at home and connecting to company networks via the Internet, the risk to company networks to intrusion and theft of sensitive information is growing. Working from home has many positive advantages for both the home worker and the company they work for. However, as companies encourage people to work from home, they need to start considering the interaction of the employee's home network and the company network he connects to. This paper discusses problems and solutions related to protection of home computers from attacks on those computers via the network connection. It does not consider protection of those systems from people who have physical access to the computers nor does it consider company laptops taken on-the-road. Home networks are often targeted by intruders because they are plentiful and they are usually not well secured. While companies have departments of professionals to maintain and secure their networks, home networks are maintained by the employee who may be less knowledgeable about network security matters. The biggest problems with home networks are that: Home networks are not designed to be secure and may use technologies (wireless) that are not secure; The operating systems are not secured when they are installed; The operating systems and applications are not maintained (for security considerations) after they are installed; and The networks are often used for other activities that put them at risk for being compromised. Home networks that are going to be connected to company networks need to be cooperatively secured by the employee and the company so they do not open up the company network to intruders. Securing home networks involves many of the same operations as securing a company network: Patch and maintain systems; Securely configure systems; Eliminate unneeded services; Protect remote logins; Use good passwords; Use current antivirus software; and Moderate your Internet usage habits. Most of these items do not take a lot of work, but require an awareness of the risks involved in not doing them or doing them incorrectly. The security of home networks and communications with company networks can be significantly improved by adding an appropriate software or hardware firewall to the home network and using a protected protocol such as Secure Sockets Layer (SSL), a Virtual Private Network (VPN), or Secure Shell (SSH) for connecting to the company network.

  8. Pre-synaptic Lateral Inhibition Provides a Better Architecture for Self-Organising Neural Networks

    E-Print Network [OSTI]

    1999-01-01T23:59:59.000Z

    Unsupervised learning is an important property of the brain and of many artificial neural networks. A large variety of unsupervised learning algorithms have been proposed. This paper takes a different approach in considering the architecture of the neural network rather than the learning algorithm. It is shown that a self-organising neural network architecture using pre-synaptic lateral inhibition enables a single learning algorithm to find distributed, local, and topological representations as appropriate to the structure of the input data received. It is argued that such an architecture not only has computational advantages but is a better model of cortical self-organisation.

  9. Ultra-wideband radar sensors and networks

    DOE Patents [OSTI]

    Leach, Jr., Richard R; Nekoogar, Faranak; Haugen, Peter C

    2013-08-06T23:59:59.000Z

    Ultra wideband radar motion sensors strategically placed in an area of interest communicate with a wireless ad hoc network to provide remote area surveillance. Swept range impulse radar and a heart and respiration monitor combined with the motion sensor further improves discrimination.

  10. High Performance Network Monitoring

    SciTech Connect (OSTI)

    Martinez, Jesse E [Los Alamos National Laboratory

    2012-08-10T23:59:59.000Z

    Network Monitoring requires a substantial use of data and error analysis to overcome issues with clusters. Zenoss and Splunk help to monitor system log messages that are reporting issues about the clusters to monitoring services. Infiniband infrastructure on a number of clusters upgraded to ibmon2. ibmon2 requires different filters to report errors to system administrators. Focus for this summer is to: (1) Implement ibmon2 filters on monitoring boxes to report system errors to system administrators using Zenoss and Splunk; (2) Modify and improve scripts for monitoring and administrative usage; (3) Learn more about networks including services and maintenance for high performance computing systems; and (4) Gain a life experience working with professionals under real world situations. Filters were created to account for clusters running ibmon2 v1.0.0-1 10 Filters currently implemented for ibmon2 using Python. Filters look for threshold of port counters. Over certain counts, filters report errors to on-call system administrators and modifies grid to show local host with issue.

  11. Memory Function Before and After Whole Brain Radiotherapy in Patients With and Without Brain Metastases

    SciTech Connect (OSTI)

    Welzel, Grit [Department of Radiation Oncology, University Medical Center Mannheim, University of Heidelberg, Mannheim (Germany)], E-mail: grit.welzel@radonk.ma.uni-heidelberg.de; Fleckenstein, Katharina [Department of Radiation Oncology, University Medical Center Mannheim, University of Heidelberg, Mannheim (Germany); Department of Radiation Oncology, Duke University Medical Center, Durham, NC (United States); Schaefer, Joerg; Hermann, Brigitte; Kraus-Tiefenbacher, Uta; Mai, Sabine K.; Wenz, Frederik [Department of Radiation Oncology, University Medical Center Mannheim, University of Heidelberg, Mannheim (Germany)

    2008-12-01T23:59:59.000Z

    Purpose: To prospectively compare the effect of prophylactic and therapeutic whole brain radiotherapy (WBRT) on memory function in patients with and without brain metastases. Methods and Materials: Adult patients with and without brain metastases (n = 44) were prospectively evaluated with serial cognitive testing, before RT (T0), after starting RT (T1), at the end of RT (T2), and 6-8 weeks (T3) after RT completion. Data were obtained from small-cell lung cancer patients treated with prophylactic cranial irradiation, patients with brain metastases treated with therapeutic cranial irradiation (TCI), and breast cancer patients treated with RT to the breast. Results: Before therapy, prophylactic cranial irradiation patients performed worse than TCI patients or than controls on most test scores. During and after WBRT, verbal memory function was influenced by pretreatment cognitive status (p < 0.001) and to a lesser extent by WBRT. Acute (T1) radiation effects on verbal memory function were only observed in TCI patients (p = 0.031). Subacute (T3) radiation effects on verbal memory function were observed in both TCI and prophylactic cranial irradiation patients (p = 0.006). These effects were more pronounced in patients with above-average performance at baseline. Visual memory and attention were not influenced by WBRT. Conclusions: The results of our study have shown that WBRT causes cognitive dysfunction immediately after the beginning of RT in patients with brain metastases only. At 6-8 weeks after the end of WBRT, cognitive dysfunction was seen in patients with and without brain metastases. Because cognitive dysfunction after WBRT is restricted to verbal memory, patients should not avoid WBRT because of a fear of neurocognitive side effects.

  12. Policy Network Approach to Coordinated Disaster Response

    E-Print Network [OSTI]

    Kim, Kwang Deok

    2013-01-01T23:59:59.000Z

    In this paper, we explore the formation of network relationships among disaster relief agencies during the process of responding to an unexpected event. The relationship is investigated through variables derived from the policy network theory, and four cases from three developed countries such as (i) Hurricane Katrina in the US; (ii) Typhoon Maemi in South Korea; (iii) Kobe; and, (iv) Tohoku Earthquake in Japan that failed to cope with extreme events forms the basis for case study presented here. We argue that structural characteristics of multi-jurisdictional coordination may facilitate or impede in responding to a complex nature of recent disaster. We further highlight the promise of policy network approach in facilitating the development of multi-jurisdictional coordination process which may provide new avenue to improve the communication and coordination of hierarchical command control driven organizations with the local community. Our proposed novel approach in investigating the usefulness of network app...

  13. analgesia improves left: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    signs. We collect Heuberger, Clemens 372 PREDICTION OF REMAINING LIFE OF POWER TRANSFORMERS BASED ON LEFT TRUNCATED AND RIGHT Mathematics Websites Summary: PREDICTION OF...

  14. achieving improved cycle: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    POLICIES FOR ACHIEVING ENERGY JUSTICE IN SOCIETY: BEST PRACTICES FOR APPLYING SOLAR ENERGY) Project Center for Energy and Environmental Policy University of Delaware First...

  15. administration improves bladder: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Websites Summary: NATIONAL AERONAUTICS AND SPACE ADMINISTRATION 1 Reuse Working Group - Report Back Co-chairs: Robert Philadelphia, PA October 21-23, 2008 12;NATIONAL...

  16. Improving end-to-end availability using overlay networks

    E-Print Network [OSTI]

    Andersen, David G. (David Godbe), 1975-

    2005-01-01T23:59:59.000Z

    The end-to-end availability of Internet services is between two and three orders of magnitude worse than other important engineered systems, including the US airline system, the 911 emergency response system, and the US ...

  17. aging liver improves: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Mars has surely been scrutinised since the dawn of humankind. In the 16th century Tycho Brahe made accurate observations of the position of Mars that enabled Johannes...

  18. advice improves patient: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    INSURANCE HOSPITALS & CLINICS DOCTORS PRIVATE TREATMENT DENTISTRY COSMETIC SURGERY CARE OF THE ELDERLY WORKPLACE HEALTH OTHER SERVICES PATIENT ADVICE HEALTH STORE HEALTH JOBS...

  19. Improving the performance of distributed simulations of wireless sensor networks

    E-Print Network [OSTI]

    Jin, Zhong-Yi

    2010-01-01T23:59:59.000Z

    Programming, June 2006. [LGH + 05] P. Levis, D. Gay, V.The latest TinyOS 2.0 release [LGH + 05] is not used for our

  20. aging society improving: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Technologies and Information Sciences Websites Summary: CodeofConduct British Computer Society Code of Conduct 5 SEPTEMBER 2001 VERSION 2.0 12;INTRODUCTION This Code sets out...