National Library of Energy BETA

Sample records for improved mobility control

  1. Improved hydrocracker temperature control: Mobil quench zone technology

    SciTech Connect (OSTI)

    Sarli, M.S.; McGovern, S.J. (Mobil Research and Development, Paulsboro, NJ (United States)); Lewis, D.W.; Snyder, P.W. (Mobil Research and Development, Princeton, NJ (United States))

    1993-01-01

    Hydrocracking is a well established process in the oil refining industry. There are over 2.7 million barrels of installed capacity world-wide. The hydrocracking process comprises several families of highly exothermic reactions and the total adiabatic temperature rise can easily exceed 200 F. Reactor temperature control is therefore very important. Hydrocracking reactors are typically constructed with multiple catalyst beds in series. Cold recycle gas is usually injected between the catalyst beds to quench the reactions, thereby controlling overall temperature rise. The design of this quench zone is the key to good reactor temperature control, particularly when processing poorer quality, i.e., higher heat release, feeds. Mobil Research and Development Corporation (MRDC) has developed a robust and very effective quench zone technology (QZT) package, which is now being licensed to the industry for hydrocracking applications.

  2. NOVEL CO2-THICKENERS FOR IMPROVED MOBILITY CONTROL

    SciTech Connect (OSTI)

    Robert M. Enick; Eric J. Beckman; Andrew Hamilton

    2001-10-01

    The first carbon dioxide thickeners have been successfully designed. Each thickener is characterized by a highly carbon dioxide-phobic functionality that imparts CO{sub 2}-solubility and a carbon dioxide-phobic group that facilitates viscosity-enhancing intermolecular associations. The design of each thickener required that appropriate balance of these groups to yield a compound that was at least several weight percent soluble in CO{sub 2} and capable of thickening the carbon dioxide by a factor of 2-20. Four types of thickeners were identified, fluoroacrylate-styrene copolymers (polyFAST), fluorinated telechelic ionomers, semi-fluorinated trialkyltin fluorides and small, fluorinated hydrogen-bonding compounds. Although significant viscosity increases (e.g. doubling the viscosity) were evidenced for each thickener during falling cylinder viscometry analysis, the polyFAST thickener provided the most dramatic increases at dilute concentration. PolyFAST is a bulk-polymerized, random copolymer of fluoroacrylate and styrene with a number-average molecular weight of about 500,000. It appears as a white, slightly waxy solid at ambient conditions. The fluoroacrylate enhances the CO{sub 2} solubility, while the styrene promotes intermolecular stacking of the aromatic groups. Although concentrations between 20-29 mol% styrene yield a thickener, the optimal composition of polyFAST for thickening was 29mol% styrene and 71mol% fluoroacrylate. Mobility measurements with a Berea sandstone core indicated that at a superficial velocity of one foot per day, a 0.5wt% concentration of 29%styrene--71%fluoroacrylate polyFAST tripled the viscosity. At concentrations of 1% and 1.5wt%, the CO{sub 2} viscosity increased by a factor of 8 and 19, respectively. If lower proportions of styrene are used, the compound will dissolve more readily in carbon dioxide but the viscosity enhancement will diminish. At higher proportions of styrene, the CO{sub 2} solubility decreases and the thickening capability also decreased, apparently due to the increased number of non-viscosity enhancing intramolecular interactions between the aromatic groups. The high price, environmental persistence, and lack of availability of bulk amounts of the fluoroacrylate monomer guided our final efforts of this work (and all of our efforts in its continuation) toward the development of inexpensive non-fluorous compounds. We have therefore initiated the design highly CO{sub 2} soluble polymers that can replace the fluoroacrylate. These hydrocarbon-based CO{sub 2}-philic compounds will then be incorporated into the structure of a compound that contains CO{sub 2}-phobic associating groups, yielding a commercial thickener.

  3. Development of improved mobility control agents for surfactant/polymer flooding. Second annual report, October 1, 1979-September 30, 1980

    SciTech Connect (OSTI)

    Martin, F.D.; Donaruma, L.G.; Hatch, M.J.

    1981-04-01

    The objective of this laboratory work is to develop improved mobility control agents that are more effective than the commercial polymers currently used in this process. During the second year of the project, the baseline testing of commercial products was completed. These baseline tests with polymers include studies on mobility control, retention, and shear degradation in Berea cores, the effect of common ions on rheological properties, thermal stability, microbial degradation, and surfactant-polymer interactions. These data are used for comparison of the commercial agents at standardized sets of conditions, and are also used to evaluate new, modified, or improved polymers. Work was also initiated on the synthesis, characterization, and preliminary screening of new and modified polymers. Testing of these analogs provides systematic correlations of polymer performance with polymer structure. This preliminary testing consists of measurements of shear degradation and viscosity loss in NaCl brines by the use of a simplified screening procedure. To date, a number of potential structure-utility relationships have been observed. Solution viscosities of all nonionic polymers tested are essentially insensitive to changes in NaCl concentration. Increasing the charge-to-mass ratio (degree of hydrolysis) of either polyacrylamides or N-alkyl analogs enhances the ability of these polymers to build viscosity in low salinity NaCl brines. However, such polymers are increasingly subject to viscosity loss as the salinity is increased. Above a certain critical molecular weight, polymers become more susceptible to shear degradation. Many of the polymers that possess stiffer backbones exhibit improved brine and shear stability. The results of these studies will be used to develop an improved mobility control polymer in the next phase of this project.

  4. Controlled Mobility for Sustainable Wireless Networks

    E-Print Network [OSTI]

    Kansal, Aman; Rahimi, Mohammed; Kaiser, W J; Srivastava, Mani B; Pottie, Gregory; Estrin, D

    2004-01-01

    fashion. Fourth, mobility must be sustainable and constantlyControlled Mobility for Sustainable Wireless Networks Amanthe controlled mobility methods required for sustainable

  5. Investigation of oil recovery improvement by coupling an interfacial tension agent and a mobility control agent in light oil reservoirs. Technical progress report, October--December 1994

    SciTech Connect (OSTI)

    Pitts, M.J.

    1994-01-01

    The study will investigate two major areas concerning co-injecting an interfacial tension reduction agent(s) and a mobility control agent into petroleum reservoirs. The first will consist of defining the mechanisms of interaction of an alkaline agent, a surfactant, and a polymer on a fluid-fluid and a fluid-rock basis. The second is the improvement of the economics of the combined technology. This report examines effect of rock type on oil recovery by an alkaline-surfactant-polymer solutions. This report also begins a series of evaluations to improve the economics of alkaline-surfactant-polymer oil recovery.

  6. Improved Mobility Control for Carbon Dioxide (CO{sub 2}) Enhanced Oil Recovery Using Silica-Polymer-Initiator (SPI) Gels

    SciTech Connect (OSTI)

    Oglesby, Kenneth

    2014-01-31

    SPI gels are multi-component silicate based gels for improving (areal and vertical) conformance in oilfield enhanced recovery operations, including water-floods and carbon dioxide (CO{sub 2}) floods, as well as other applications. SPI mixtures are like-water when pumped, but form light up to very thick, paste-like gels in contact with CO{sub 2}. When formed they are 3 to 10 times stronger than any gelled polyacrylamide gel now available, however, they are not as strong as cement or epoxy, allowing them to be washed / jetted out of the wellbore without drilling. This DOE funded project allowed 8 SPI field treatments to be performed in 6 wells (5 injection wells and 1 production well) in 2 different fields with different operators, in 2 different basins (Gulf Coast and Permian) and in 2 different rock types (sandstone and dolomite). Field A was in a central Mississippi sandstone that injected CO{sub 2} as an immiscible process. Field B was in the west Texas San Andres dolomite formation with a mature water-alternating-gas miscible CO{sub 2} flood. Field A treatments are now over 1 year old while Field B treatments have only 4 months data available under variable WAG conditions. Both fields had other operational events and well work occurring before/ during / after the treatments making definitive evaluation difficult. Laboratory static beaker and dynamic sand pack tests were performed with Ottawa sand and both fields’ core material, brines and crude oils to improve SPI chemistry, optimize SPI formulations, ensure SPI mix compatibility with field rocks and fluids, optimize SPI treatment field treatment volumes and methods, and ensure that strong gels set in the reservoir. Field quality control procedures were designed and utilized. Pre-treatment well (surface) injectivities ranged from 0.39 to 7.9 MMCF/psi. The SPI treatment volumes ranged from 20.7 cubic meters (m{sup 3}, 5460 gallons/ 130 bbls) to 691 m{sup 3} (182,658 gallons/ 4349 bbls). Various size and types of chemical/ water buffers before and after the SPI mix ensured that pre-gelled SPI mix got out into the formation before setting into a gel. SPI gels were found to be 3 to 10 times stronger than any commercially available cross-linked polyacrylamide gels based on Penetrometer and Bulk Gel Shear Testing. Because of SPI’s unique chemistry with CO{sub 2}, both laboratory and later field tests demonstrated that multiple, smaller volume SPI treatments maybe more effective than one single large SPI treatment. CO{sub 2} injectivities in injection well in both fields were reduced by 33 to 70% indicating that injected CO{sub 2} is now going into new zones. This reduction has lasted 1+ year in Field A. Oil production increased and CO{sub 2} production decreased in 5 Field A production wells, offsets to Well #1 injector, for a total of about 2,250 m{sup 3} (600,000 gallons/ 14,250 bbls) of incremental oil production- a $140 / SPI bbl return. Treated marginal production well, Field A Well #2, immediately began showing increased oil production totaling 238 m{sup 3} (63,000 gallons/ 1500 BBLs) over 1 year and an immediate 81% reduced gas-oil ratio.

  7. Control Scheme Modifications Increase Efficiency of Steam Generation System at Exxon Mobil Gas Plant

    SciTech Connect (OSTI)

    2002-01-01

    This case study highlights control scheme modifications made to the steam system at ExxonMobil's Mary Ann Gas Plant in Mobile, Alabama, which improved steam flow efficiency and reduced energy costs.

  8. Microbial controls on metal ion mobility

    E-Print Network [OSTI]

    Leslie, Karla Louise

    2012-12-31

    '' %-0),' '''+,%'-0):)-*'%&>#&?),0' <-*6);-+#'E&+:5&6-,='' '''''''')C'0"#$%&0' <-*6);&4F&=&:+?),'' ''''''+00)*-+?),0' 6 This research investigates the biogeochemical controls on metal mobility in the subsurface and soil anomaly...

  9. Portable control device for networked mobile robots

    DOE Patents [OSTI]

    Feddema, John T. (Albuquerque, NM); Byrne, Raymond H. (Albuquerque, NM); Bryan, Jon R. (Edgewood, NM); Harrington, John J. (Albuquerque, NM); Gladwell, T. Scott (Albuquerque, NM)

    2002-01-01

    A handheld control device provides a way for controlling one or multiple mobile robotic vehicles by incorporating a handheld computer with a radio board. The device and software use a personal data organizer as the handheld computer with an additional microprocessor and communication device on a radio board for use in controlling one robot or multiple networked robots.

  10. Tandem robot control system and method for controlling mobile robots in tandem

    DOE Patents [OSTI]

    Hayward, David R. (Albuquerque, NM); Buttz, James H. (Albuquerque, NM); Shirey, David L. (Albuquerque, NM)

    2002-01-01

    A control system for controlling mobile robots provides a way to control mobile robots, connected in tandem with coupling devices, to navigate across difficult terrain or in closed spaces. The mobile robots can be controlled cooperatively as a coupled system in linked mode or controlled individually as separate robots.

  11. Advanced mobile networking, sensing, and controls.

    SciTech Connect (OSTI)

    Feddema, John Todd; Kilman, Dominique Marie; Byrne, Raymond Harry; Young, Joseph G.; Lewis, Christopher L.; Van Leeuwen, Brian P.; Robinett, Rush D. III; Harrington, John J.

    2005-03-01

    This report describes an integrated approach for designing communication, sensing, and control systems for mobile distributed systems. Graph theoretic methods are used to analyze the input/output reachability and structural controllability and observability of a decentralized system. Embedded in each network node, this analysis will automatically reconfigure an ad hoc communication network for the sensing and control task at hand. The graph analysis can also be used to create the optimal communication flow control based upon the spatial distribution of the network nodes. Edge coloring algorithms tell us that the minimum number of time slots in a planar network is equal to either the maximum number of adjacent nodes (or degree) of the undirected graph plus some small number. Therefore, the more spread out that the nodes are, the fewer number of time slots are needed for communication, and the smaller the latency between nodes. In a coupled system, this results in a more responsive sensor network and control system. Network protocols are developed to propagate this information, and distributed algorithms are developed to automatically adjust the number of time slots available for communication. These protocols and algorithms must be extremely efficient and only updated as network nodes move. In addition, queuing theory is used to analyze the delay characteristics of Carrier Sense Multiple Access (CSMA) networks. This report documents the analysis, simulation, and implementation of these algorithms performed under this Laboratory Directed Research and Development (LDRD) effort.

  12. Random access wireless networks with controlled mobility

    E-Print Network [OSTI]

    Modiano, Eytan H.

    This paper considers wireless networks where messages arriving randomly (in time and space) are collected by a mobile receiver. The messages are transmitted to the mobile receiver according to a random access scheme and ...

  13. Solid state cloaking for electrical charge carrier mobility control

    DOE Patents [OSTI]

    Zebarjadi, Mona; Liao, Bolin; Esfarjani, Keivan; Chen, Gang

    2015-07-07

    An electrical mobility-controlled material includes a solid state host material having a controllable Fermi energy level and electrical charge carriers with a charge carrier mobility. At least one Fermi level energy at which a peak in charge carrier mobility is to occur is prespecified for the host material. A plurality of particles are distributed in the host material, with at least one particle disposed with an effective mass and a radius that minimize scattering of the electrical charge carriers for the at least one prespecified Fermi level energy of peak charge carrier mobility. The minimized scattering of electrical charge carriers produces the peak charge carrier mobility only at the at least one prespecified Fermi level energy, set by the particle effective mass and radius, the charge carrier mobility being less than the peak charge carrier mobility at Fermi level energies other than the at least one prespecified Fermi level energy.

  14. Improving Computational Efficiency for Personalized Medical Applications in Mobile Cloud Computing Environment

    E-Print Network [OSTI]

    Obradovic, Zoran

    Improving Computational Efficiency for Personalized Medical Applications in Mobile Cloud Computing pronounced. First one is mobile computing and the second one is cloud services. Both these technologies have and wellness applications space. The affordances offered by mobile computing devices are commonplace and so

  15. Improving the performance and reliability of mobile applications

    E-Print Network [OSTI]

    Sivalingam, Lenin Ravindranath

    2014-01-01

    The mobile application ("app") ecosystem has grown at a tremendous pace with millions of apps and hundreds of thousands of app developers. Mobile apps run across a wide range of network, hardware, location, and usage ...

  16. Modular multivariable control improves hydrocracking

    SciTech Connect (OSTI)

    Chia, T.L.; Lefkowitz, I. [ControlSoft, Inc., Cleveland, OH (United States); Tamas, P.D. [Marathon Oil Co., Robinson, IL (United States)

    1996-10-01

    Modular multivariable control (MMC), a system of interconnected, single process variable controllers, can be a user-friendly, reliable and cost-effective alternative to centralized, large-scale multivariable control packages. MMC properties and features derive directly from the properties of the coordinated controller which, in turn, is based on internal model control technology. MMC was applied to a hydrocracking unit involving two process variables and three controller outputs. The paper describes modular multivariable control, MMC properties, tuning considerations, application at the DCS level, constraints handling, and process application and results.

  17. SURFACTANT BASED ENHANCED OIL RECOVERY AND FOAM MOBILITY CONTROL

    SciTech Connect (OSTI)

    George J. Hirasaki; Clarence A. Miller; Gary A. Pope; Richard E. Jackson

    2004-07-01

    Surfactant flooding has the potential to significantly increase recovery over that of conventional waterflooding. The availability of a large number of surfactants makes it possible to conduct a systematic study of the relation between surfactant structure and its efficacy for oil recovery. Also, the addition of an alkali such as sodium carbonate makes possible in situ generation of surfactant and significant reduction of surfactant adsorption. In addition to reduction of interfacial tension to ultra-low values, surfactants and alkali can be designed to alter wettability to enhance oil recovery. An alkaline surfactant process is designed to enhance spontaneous imbibition in fractured, oil-wet, carbonate formations. It is able to recover oil from dolomite core samples from which there was no oil recovery when placed in formation brine. Mobility control is essential for surfactant EOR. Foam is evaluted to improve the sweep efficiency of surfactant injected into fractured reservoirs. UTCHEM is a reservoir simulator specially designed for surfactant EOR. A dual-porosity version is demonstrated as a potential scale-up tool for fractured reservoirs.

  18. Surfactant Based Enhanced Oil Recovery and Foam Mobility Control

    SciTech Connect (OSTI)

    George J. Hirasaki; Clarence A. Miller

    2006-09-09

    Surfactant flooding has the potential to significantly increase recovery over that of conventional waterflooding. The availability of a large number of surfactant structures makes it possible to conduct a systematic study of the relation between surfactant structure and its efficacy for oil recovery. A mixture of two surfactants was found to be particularly effective for application in carbonate formations at low temperature. The mixture is single phase for higher salinity or calcium concentrations than that for either surfactant used alone. This makes it possible to inject the surfactant slug with polymer close to optimal conditions and yet be single phase. A formulation has been designed for a particular field application. It uses partially hydrolyzed polyacrylamide for mobility control. The addition of an alkali such as sodium carbonate makes possible in situ generation of naphthenic soap and significant reduction of synthetic surfactant adsorption. The design of the process to maximize the region of ultra-low IFT takes advantage of the observation that the ratio of soap to synthetic surfactant is a parameter in the conditions for optimal salinity. Even for a fixed ratio of soap to surfactant, the range of salinity for low IFT was wider than that reported for surfactant systems in the literature. Low temperature, forced displacement experiments in dolomite and silica sandpacks demonstrate that greater than 95% recovery of the waterflood remaining oil is possible with 0.2% surfactant concentration, 0.5 PV surfactant slug, with no alcohol. Compositional simulation of the displacement process demonstrates the role of soap/surfactant ratio on passage of the profile through the ultralow IFT region, the importance of a wide salinity range of low IFT, and the importance of the viscosity of the surfactant slug. Mobility control is essential for surfactant EOR. Foam is evaluated to improve the sweep efficiency of surfactant injected into fractured reservoirs as well as a drive fluid for ASP flooding. UTCHEM is a reservoir simulator specially designed for surfactant EOR. It has been modified to represent the effects of a change in wettability produced by surfactant injection.

  19. An iterative learning controller for nonholonomic mobile robots

    SciTech Connect (OSTI)

    Oriolo, G.; Panzieri, S.; Ulivi, G.

    1998-09-01

    The authors present an iterative learning controller that applies to nonholonomic mobile robots, as well as other systems that can be put in chained form. The learning algorithm exploits the fact that chained-form. The learning algorithm exploits the fact that chained-form systems are linear under piecewise-constant inputs. The proposed control scheme requires the execution of a small number of experiments to drive the system to the desired state in finite time, with nice convergence and robustness properties with respect to modeling inaccuracies as well as disturbances. To avoid the necessity of exactly reinitializing the system at each iteration, the basic method is modified so as to obtain a cyclic controller, by which the system is cyclically steered through an arbitrary sequence of states. As a case study, a carlike mobile robot is considered. Both simulation and experimental results are reported to show the performance of the method.

  20. Mobile Monolith Polymer Elements For Flow Control In Microfluidic Systems

    DOE Patents [OSTI]

    Hasselbrink, Jr., Ernest F. (Saline, MI); Rehm, Jason E. (Alameda, CA); Shepodd, Timothy J. (Livermore, CA); Kirby, Brian J. (San Francisco, CA)

    2006-01-24

    A cast-in-place and lithographically shaped mobile, monolithic polymer element for fluid flow control in microfluidic devices and method of manufacture. Microfluid flow control devices, or microvalves that provide for control of fluid or ionic current flow can be made incorporating a cast-in-place, mobile monolithic polymer element, disposed within a microchannel, and driven by fluid pressure (either liquid or gas) against a retaining or sealing surface. The polymer elements are made by the application of lithographic methods to monomer mixtures formulated in such a way that the polymer will not bond to microchannel walls. The polymer elements can seal against pressures greater than 5000 psi, and have a response time on the order of milliseconds. By the use of energetic radiation it is possible to depolymerize selected regions of the polymer element to form shapes that cannot be produced by conventional lithographic patterning and would be impossible to machine.

  1. Mobile monolithic polymer elements for flow control in microfluidic devices

    DOE Patents [OSTI]

    Hasselbrink, Jr., Ernest F. (Saline, MI); Rehm, Jason E. (Alameda, CA); Shepodd, Timothy J. (Livermore, CA); Kirby, Brian J. (San Francisco, CA)

    2005-11-11

    A cast-in-place and lithographically shaped mobile, monolithic polymer element for fluid flow control in microfluidic devices and method of manufacture. Microfluid flow control devices, or microvalves that provide for control of fluid or ionic current flow can be made incorporating a cast-in-place, mobile monolithic polymer element, disposed within a microchannel, and driven by fluid pressure (either liquid or gas) against a retaining or sealing surface. The polymer elements are made by the application of lithographic methods to monomer mixtures formulated in such a way that the polymer will not bond to microchannel walls. The polymer elements can seal against pressures greater than 5000 psi, and have a response time on the order of milliseconds. By the use of energetic radiation it is possible to depolymerize selected regions of the polymer element to form shapes that cannot be produced by conventional lithographic patterning and would be impossible to machine.

  2. Mobile monolithic polymer elements for flow control in microfluidic devices

    DOE Patents [OSTI]

    Hasselbrink, Jr., Ernest F.; Rehm, Jason E.; Shepodd, Timothy J.

    2004-08-31

    A cast-in-place and lithographically shaped mobile, monolithic polymer element for fluid flow control in microfluidic devices and method of manufacture. Microfluid flow control devices, or microvalves that provide for control of fluid or ionic current flow can be made incorporating a cast-in-place, mobile monolithic polymer element, disposed within a microchannel, and driven by either fluid or gas pressure against a retaining or sealing surface. The polymer elements are made by the application of lithographic methods to monomer mixtures formulated in such a way that the polymer will not bond to microchannel walls. The polymer elements can seal against pressures greater than 5000 psi, and have a response time on the order of milliseconds. By the use of energetic radiation it is possible to depolymerize selected regions of the polymer element to form shapes that cannot be produced by conventional lithographic patterning and would be impossible to machine.

  3. Surfactant Based Enhanced Oil Recovery and Foam Mobility Control

    SciTech Connect (OSTI)

    George J. Hirasaki; Clarence A. Miller; Gary A. Pope

    2005-07-01

    Surfactant flooding has the potential to significantly increase recovery over that of conventional waterflooding. The availability of a large number of surfactant structures makes it possible to conduct a systematic study of the relation between surfactant structure and its efficacy for oil recovery. A combination of two surfactants was found to be particularly effective for application in carbonate formations at low temperature. A formulation has been designed for a particular field application. The addition of an alkali such as sodium carbonate makes possible in situ generation of surfactant and significant reduction of surfactant adsorption. In addition to reduction of interfacial tension to ultra-low values, surfactants and alkali can be designed to alter wettability to enhance oil recovery. The design of the process to maximize the region of ultra-low IFT is more challenging since the ratio of soap to synthetic surfactant is a parameter in the conditions for optimal salinity. Compositional simulation of the displacement process demonstrates the interdependence of the various components for oil recovery. An alkaline surfactant process is designed to enhance spontaneous imbibition in fractured, oil-wet, carbonate formations. It is able to recover oil from dolomite core samples from which there was no oil recovery when placed in formation brine. Mobility control is essential for surfactant EOR. Foam is evaluated to improve the sweep efficiency of surfactant injected into fractured reservoirs. UTCHEM is a reservoir simulator specially designed for surfactant EOR. It has been modified to represent the effects of a change in wettability. Simulated case studies demonstrate the effects of wettability.

  4. Improving Mobile Database Access Over Wide-Area Networks Without

    E-Print Network [OSTI]

    relationship management, asset tracking, and resource scheduling. A key contrib- utor to this success without degrading consistency. Cedar exploits the disk storage and processing power of a mobile client be used to reduce data transmission volume from a database server. The reduc- tion is achieved by using

  5. 7.1 Classical Control Mobile Robotics -Prof Alonzo Kelly, CMU RI1

    E-Print Network [OSTI]

    Nourbakhsh, Illah

    Control ­ 7.1.4 Model Referenced and Feedforward Control ­ Summary Mobile Robotics - Prof Alonzo Kelly.1.3 Feedback Control ­ 7.1.4 Model Referenced and Feedforward Control ­ Summary Mobile Robotics - Prof Alonzo, power) ­ onto controlled variables (positions, velocities) · Feedback alters the dynamics of a system to

  6. Control-Plane Protocol Interactions in Mobile Networks

    E-Print Network [OSTI]

    Tu, Guan-Hua

    2015-01-01

    deployed UDP servers and mobile devices. (4) NetworkStatus:our TCP server and mobile devices (root is required) . (3)recorded by operators and mobile devices, as well as log

  7. Johnson Controls Develops an Improved Vehicle Battery, Works...

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

    Johnson Controls Develops an Improved Vehicle Battery, Works to Cut Battery Costs in Half Johnson Controls Develops an Improved Vehicle Battery, Works to Cut Battery Costs in Half...

  8. Mobile Agent Gain Scheduler Control in Inter-Continental Intelligent Space

    E-Print Network [OSTI]

    Chow, Mo-Yuen

    other to provide intelligent services to inhabitants [1, 3]. The mobile agents have sensors andMobile Agent Gain Scheduler Control in Inter-Continental Intelligent Space Rangsarit - Intelligent Space (iSpace) is a space (room, corridor, or street), which has distributed sensory and mobile

  9. An Optimal Control Policy in a Mobile Cloud Computing System Based on Stochastic Data

    E-Print Network [OSTI]

    Pedram, Massoud

    An Optimal Control Policy in a Mobile Cloud Computing System Based on Stochastic Data Xue Lin Angeles, CA, USA {xuelin, yanzhiwa, pedram}@usc.edu Abstract--The emerging mobile cloud computing (MCC sum. Keywords--mobile cloud computing; remote processing; dynamic voltage and frequency scaling I

  10. STOVEPipe: Observable Access Control of User Data for Untrusted Applications on Mobile Devices

    E-Print Network [OSTI]

    STOVEPipe: Observable Access Control of User Data for Untrusted Applications on Mobile Devices, rolandomartins}@cmu.edu, rgandhi@ece.cmu.edu, priya@cs.cmu.edu Abstract--The rapid growth in mobile devices will give rise to the trend of the leasing out of compute and data resources on mobile devices to third

  11. Meddle: Middleboxes for Increased Transparency and Control of Mobile Traffic

    E-Print Network [OSTI]

    Legout, Arnaud

    a framework that allows us to intercept and potentially modify traffic generated by mobile devices this function- ality is difficult on mobile devices because it requires warranty- voiding techniques- proach, carriers may manipulate traffic once it leaves the mobile device [13], thus rendering some

  12. Nonlinear Tracking Control for Nonholonomic Mobile Robots with Input Constraints: An Experimental Study

    E-Print Network [OSTI]

    Ren, Wei

    Nonlinear Tracking Control for Nonholonomic Mobile Robots with Input Constraints: An Experimental Study Wei Ren, Ji-Sang Sun, Randal W. Beard, Timothy W. McLain Abstract-- This paper presents experimental results of nonlinear trajectory tracking controllers for nonholonomic mobile robots with fixed

  13. ALLIANCE: An Architecture for Fault Tolerant, Cooperative Control of Heterogeneous Mobile Robots

    E-Print Network [OSTI]

    Parker, Lynne E.

    ALLIANCE: An Architecture for Fault Tolerant, Cooperative Control of Heterogeneous Mobile Robots ALLIANCE, that utilizes adaptive action selection to achieve fault toler- ant cooperative control in robot demonstration. These experiments illustrate the ability of ALLIANCE to achieve adaptive, fault

  14. Performance Improvement of Proportional Directional Control Valves: Methods and Experiments

    E-Print Network [OSTI]

    Yao, Bin

    Performance Improvement of Proportional Directional Control Valves: Methods and Experiments Fanping slow valves (e.g. proportional directional control valves). To im- prove the performance of proportional directional control valves, three different types of controllers are synthesized. Firstly, based

  15. Improved Engine Control Strategies Enabled by Digital Signal...

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

    Engine Control Strategies Enabled by Digital Signal-Processing Method for Zirconia Exhaust Sensors Improved Engine Control Strategies Enabled by Digital Signal-Processing Method...

  16. Cooperative system and method using mobile robots for testing a cooperative search controller

    DOE Patents [OSTI]

    Byrne, Raymond H. (Albuquerque, NM); Harrington, John J. (Albuquerque, NM); Eskridge, Steven E. (Albuquerque, NM); Hurtado, John E. (College Station, TX)

    2002-01-01

    A test system for testing a controller provides a way to use large numbers of miniature mobile robots to test a cooperative search controller in a test area, where each mobile robot has a sensor, a communication device, a processor, and a memory. A method of using a test system provides a way for testing a cooperative search controller using multiple robots sharing information and communicating over a communication network.

  17. Formation Control of Nonholonomic Mobile Robots with Omnidirectional Visual Servoing and Motion Segmentation

    E-Print Network [OSTI]

    Vidal, René

    -- We consider the problem of having a team of nonholonomic mobile robots follow a desired leader traffic control, satellite clustering, automatic highways, and mobile robotics. Previous work in formation- figuration space. They mitigate sensing difficulties by painting each leader of a different color

  18. Global methodology in control architecture to improve mobile robot reliability

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    (valid interval value verification), safety-bag checks (command verification), and model-based monitoring and diagnosis (detection of any inconsistency between measured system data and corre- sponding model values) [3. Robots are fitted with numerous powerful sensors which provide accurate information about the robot state

  19. Novel CO2-Thickeners for Improved Mobility Control

    SciTech Connect (OSTI)

    Enick, Dr. Robert M.; Beckman, Dr. Eric J.; Hamilton, Dr. Andrew

    2002-01-15

    The objective of this contract was to design, synthesize, and characterize thickening agents for dense carbon dioxide and to evaluate their solubility and viscosity-enhancing potential in CO2.

  20. Novel CO{sub 2}-thickeners for improved mobility control

    SciTech Connect (OSTI)

    Enick, Dr. Robert M.; Beckman, Dr. Eric J.; Hamilton, Dr. Andrew

    2000-02-02

    The objective of this study was to design, synthesize, and characterize thickening agents for dense carbon dioxide and to evaluate their solubility and viscosity-enhancing potential in CO{sub 2}. Previously, hydrocarbon-fluorocarbon random copolymers, sulfated hydrocarbon-fluorocarbon random copolymers, semifluorinated trialkyltin fluorides and small hydrogen-bonding compounds were evaluated. Random copolymers of styrene and heptadecafluorodecyl acrylate yielded substantial increases in viscosity. The amount of styrene varied between 22--40 mole% in the copolymer. Falling cylinder viscometry results indicated that the 29% styrene--71% fluoroacrylate copolymer induced (at 295K and 34.5 Mpa) increases of 10, 60 and 250 at copolymer concentrations of 1, 3 and 5wt%, respectively.

  1. User-controlled privacy for personal mobile data

    E-Print Network [OSTI]

    Paradesi, Sharon M. (Sharon Myrtle), 1986-

    2014-01-01

    Smartphones collect a wide range of sensor data, ranging from the basic, such as location, accelerometer, and Bluetooth, to the more advanced, such as heart rate. Mobile apps on the Android and iOS platforms provide users ...

  2. Mobile source emission control cost-effectiveness: Issues, uncertainties, and results

    SciTech Connect (OSTI)

    Wang, M.Q.

    1994-12-01

    Emissions from mobile sources undoubtedly contribute to US urban air pollution problems. Consequently, mobile source control measures, ranging from vehicle emission standards to reducing vehicle travel, have been adopted or proposed to help attain air quality standards. To rank various mobile source control measures, various government agencies and private organizations calculate cost-effectiveness in dollars per ton of emissions reduced. Arguments for or against certain control measures are often made on the basis of the calculated cost-effectiveness. Yet, different studies may yield significantly different cost-effectiveness results, because of the various methodologies used and assumptions regarding the values of costs and emission reductions. Because of the methodological differences, the cost-effectiveness results may not be comparable between studies. Use of incomparable cost-effectiveness results may result in adoption of ineffective control measures. This paper first discusses some important methodological issues involved in cost-effectiveness calculation for mobile sources and proposes appropriate, systematic methods for dealing with these issues. Various studies have been completed recently to evaluate the cost-effectiveness of mobile source emission control measures. These studies resulted in wide variations in the cost-effectiveness for same control measures. Methodological assumptions used in each study are presented and, based on the proposed methods for cost-effectiveness calculation, adjustments are applied to the original estimates in each study to correct inappropriate methodological assumptions and to make the studies comparable. Finally, mobile source control measures are ranked on the basis of the adjusted cost-effectiveness estimates.

  3. Rough-terrain mobile robot planning and control with application to planetary exploration

    E-Print Network [OSTI]

    Iagnemma, Karl David

    2001-01-01

    Future planetary exploration missions will require mobile robots to perform difficult tasks in highly challenging terrain, with limited human supervision. Current motion planning and control algorithms are not well suited ...

  4. Socially Influencing Systems (SIS) for Improved Urban Mobility IAP 2015 Non-Credit Course (E15-359, MIT Media Lab)

    E-Print Network [OSTI]

    Herr, Hugh

    to various problem domains, such as mobility, health and wellbeing, energy conservation and efficiency for motivating low-energy mobility and building prototypes of new SIS for sustainable urban mobility, includinSocially Influencing Systems (SIS) for Improved Urban Mobility IAP 2015 Non-Credit Course (E15

  5. MIRO: MIDDLEWARE FOR CONTROLLING BIOLOGICALLY INSPIRED MOBILE ROBOTS

    E-Print Network [OSTI]

    Weitzenfeld, Alfredo

    . These animals react both to fixed and mobile objects. Within the fixed group we find, for example, a water@itam.mx Abstract The study of animal behavior has inspired many robotic designs. In general, there are two ways. The goal within this architecture is to reduce robot complexity, size, cost and energy consumption

  6. Development of A Cryogenic Drift Cell Spectrometer and Methods for Improving the Analytical Figures of Merit for Ion Mobility-Mass Spectrometry Analysis 

    E-Print Network [OSTI]

    May, Jody C.

    2010-10-12

    A cryogenic (325-80 K) ion mobility-mass spectrometer was designed and constructed in order to improve the analytical figures-of-merit for the chemical analysis of small mass analytes using ion mobility-mass spectrometry. ...

  7. Optimizing Energy-Latency Trade-off in Sensor Networks with Controlled Mobility

    E-Print Network [OSTI]

    Gupta, Rajesh

    Optimizing Energy-Latency Trade-off in Sensor Networks with Controlled Mobility Ryo Sugihara Rajesh the flexibility in the energy-latency trade-off for sensor network communications. I. INTRODUCTION Controlled the energy-latency trade-off when using a data mule. We design a problem framework for optimizing the data

  8. tripzoom: An App to Improve your Mobility Behavior Gregor Broll1

    E-Print Network [OSTI]

    mobility, sustainable traffic, mobile sensing, incentives, social networks 1. INTRODUCTION Urban traffic "Sustainable Social Network Services for Transport" (SUNSET) [11] to investigate how mobility monitoring and to make it more sustainable. tripzoom uses the sensing capabilities of mobile devices to create individual

  9. Proceedings IROS 2000 Conference on Intelligent Robots and Systems, Takamatsu, Japan Planning and Model-Based Control for Mobile Manipulators

    E-Print Network [OSTI]

    Poulakakis, Ioannis

    on trajectory planning and control for mobile manipulators. Two commonly available mobile platforms, a car manipulator systems, comprised of a mobile platform with one or more manipulators, are of great interest them to follow simultaneously desired end-effector and platform trajectories without violating

  10. Hydroxyapatite based hybrid dental materials with controlled porosity and improved

    E-Print Network [OSTI]

    North Texas, University of

    Dental obturation materials are perhaps the simplest biomaterials introduced into the human body becauseHydroxyapatite based hybrid dental materials with controlled porosity and improved tribological Lobland2 and J. R. Rodriguez1 Hybrid dental materials were designed with controlled porosity and improved

  11. Guidance for Deployment of Mobile Technologies for Nuclear Power...

    Energy Savers [EERE]

    of mobile technology for the purpose of improving human performance and plant status control (PSC) for field workers in an NPP setting. This document especially is directed at...

  12. Optimizing Energy-Latency Trade-off in Sensor Networks with Controlled Mobility

    E-Print Network [OSTI]

    Gupta, Rajesh

    Optimizing Energy-Latency Trade-off in Sensor Networks with Controlled Mobility Ryo Sugihara Rajesh increasing the flexibility in the energy-latency trade-off for sensor network communications. I. INTRODUCTION the energy-latency trade-off when using a data mule. We design a problem framework for optimizing the data

  13. Experimental validation of an autonomous control system on a mobile robot platform

    E-Print Network [OSTI]

    Ren, Wei

    .-S. Sun, R. Beard and T. McLain Abstract: An autonomous control system designed for a non avoidance, real-time trajectory generation and trajectory tracking. Both the wheeled mobile robot as either stabilisation or tracking. Based on Brockett's necessary condition for feed- back stabilisation [1

  14. MAC Sleep Mode Control Considering Downlink Traffic Pattern and Mobility

    E-Print Network [OSTI]

    Bahk, Saewoong

    .11 and IEEE 802.16 include energy saving techniques. These protocols, however, have a problem in minimizing-efficiency. Through simulations, we show that our proposed algorithm improves energy saving and delay performance-- energy saving, sleep mode, doze state. I. INTRODUCTION In wireless communications, the battery power

  15. Fuel system pressure control improves NGV performance

    SciTech Connect (OSTI)

    Heenan, J.S.

    1996-09-01

    The use of natural gas as a transportation fuel can offer: emissions and environmental benefits; energy diversity and security. Current reports suggest there are about 1,000,000 natural gas vehicles (NGV) operating around the world. One key component of NGV systems is the pressure regulator. Without accurate pressure regulation it is difficult, and costly, to obtain low emissions and good performance benefits from NGV. The paper discusses a precision, NGV, pressure regulator for fuel injection applications. Critical features of any regulator are flow and pressure output (P{sub out}) error. P{sub out} errors include droop, creep and hysteresis. Fuel injector inlet pressures vary depending on the system design approach. Normally fuel injector inlet pressures vary between 1.7 to 17 bar. Additional topics of discussion include heat exchanger control, using manifold absolute pressure (MAP) to bias the regulator and the effects of undersized inlet and outlet fittings and hoses. Also supplied are comparative emissions test results for one and two-stage regulators. The paper concludes that precision pressure regulation is a cost-effective method to obtain low emissions and good performance.

  16. International Conference on Machine Control & Guidance 2008 1 No Driving in Circles -Improving the Research and

    E-Print Network [OSTI]

    machinery often use machine models to simulate the behaviour of a machine either to design or develop new the Research and Development of Mobile Machinery and Control Systems by Using Advanced Simulation Technology, control and communication mechanisms for mobile machinery always requires a high amount of practical

  17. Improving Mobile Database Access Over Wide-Area Networks Without Degrading Consistency

    E-Print Network [OSTI]

    Satyanarayanan, Mahadev "Satya"

    degrading consistency. Cedar exploits the disk storage and processing power of a mobile client to compensate to reduce data transmission volume from a data- base server. The reduction is achieved by using content Management]: Systems General Terms Design, Performance Keywords mobile database access, wireless networks

  18. The design and construction of electronic motor control and network interface hardware for advance concept urban mobility vehicles

    E-Print Network [OSTI]

    Morrissey, Bryan L. (Bryan Lawrence)

    2008-01-01

    Over the past several years, the Smart Cities Group at MIT's Media Lab has engaged in research to develop several advanced concepts for vehicles to improve urban mobility. This research has focused on developing a modular ...

  19. Using Differential Adhesion to Control Self-Assembly and Self-Repair of Collections of Modular Mobile Robots 

    E-Print Network [OSTI]

    Ottery, Peter

    This thesis presents a novel distributed control method which allows a collection of independently mobile robotic units, with two or three dimensional movement, to self-assemble into self-repairing hierarchical structures. ...

  20. Transformer Thermal Modeling: Improving Reliability Using Data Quality Control

    E-Print Network [OSTI]

    1 Transformer Thermal Modeling: Improving Reliability Using Data Quality Control Daniel J. Tylavsky--Eventually all large transformers will be dynamically loaded using models updated regularly from field measured data. Models obtained from measured data give more accurate results than models based on transformer

  1. Enhancement of mobility in an interacting colloidal system under feedback control

    E-Print Network [OSTI]

    Robert Gernert; Sabine H. L. Klapp

    2015-06-05

    Feedback control schemes are a promising way to manipulate transport properties of driven colloidal suspensions. In the present article we suggest a feedback scheme to enhance the collective transport of colloidal particles with repulsive interactions through a one-dimensional tilted washboard potential. The control is modelled by a harmonic confining potential, mimicking an optical "trap", with the center of this trap moving with the (instantaneous) mean particle position. Our theoretical analysis is based on the Smoluchowski equation combined with Dynamical Density Functional Theory (DDFT) for systems with hard-core or ultra-soft (Gaussian) interactions. For either type of interaction we find that the feedback control can lead to an enhancement of the mobility by several orders of magnitude relative to the uncontrolled case. The largest effects occur for intermediate stiffness of the trap and large particle numbers. Moreover, in some regions of the parameter space the feedback control induces oscillations of the mean velocity. Finally, we show that the enhancement of mobility is robust against a small time delay in implementing the feedback control.

  2. Plasma Aerodynamic Control Effectors for Improved Wind Turbine Performance

    SciTech Connect (OSTI)

    Mehul P. Patel; Srikanth Vasudevan; Robert C. Nelson; Thomas C. Corke

    2008-08-01

    Orbital Research Inc is developing an innovative Plasma Aerodynamic Control Effectors (PACE) technology for improved performance of wind turbines. The PACE system is aimed towards the design of "smart" rotor blades to enhance energy capture and reduce aerodynamic loading and noise using flow-control. The PACE system will provide ability to change aerodynamic loads and pitch distribution across the wind turbine blade without any moving surfaces. Additional benefits of the PACE system include reduced blade structure weight and complexity that should translate into a substantially reduced initial cost. During the Phase I program, the ORI-UND Team demonstrated (proof-of-concept) performance improvements on select rotor blade designs using PACE concepts. Control of both 2-D and 3-D flows were demonstrated. An analytical study was conducted to estimate control requirements for the PACE system to maintain control during wind gusts. Finally, independent laboratory experiments were conducted to identify promising dielectric materials for the plasma actuator, and to examine environmental effects (water and dust) on the plasma actuator operation. The proposed PACE system will be capable of capturing additional energy, and reducing aerodynamic loading and noise on wind turbines. Supplementary benefits from the PACE system include reduced blade structure weight and complexity that translates into reduced initial capital costs.

  3. Improving Semantics In Mobile Devices Profiling: A Model Conceptual Formalisation and Ontology Specification 

    E-Print Network [OSTI]

    Lino, N; Tate, Austin; Chen-Burger, Y-H

    In this work we discuss and propose a new approach for semantic enhancement in mobile devices profiling. This work is motivated by the lack of semantic in existing profiling methods and is part of a broaden framework for visualisation of intelligent...

  4. International Conference on Machine Control & Guidance 2008 1 Self-configuring, Mobile Networks in the Area of

    E-Print Network [OSTI]

    by a micro controller (PAN = private area network). Based on the wireless standard of ZigBee, the network an Atmel micro controller to actuate function. The functions ZigBee, GPS, CAN, GPRS and SD Card are transmitted via SPI. ZigBee is used for the communication between mobile machines and the head quarter

  5. Improving reliability in the SLC (Stanford Linear Collider) control system

    SciTech Connect (OSTI)

    Heinen, N.; Spencer, N.; Tinsman, J.

    1989-10-01

    During the past year, considerable emphasis has been placed on improving the overall reliability of the SLC control system. The Errorlog Facility has proven a useful tool to diagnose hardware and software problems. By analyzing the various error messages and their correlations, one can usually determine the software component or hardware module causing faults. Daily summaries help to identify problems so that they can be remedied before they become catastrophic; thereby bringing about a considerable increase in performance. We discuss the various tools we use and our operational experience with them. 3 refs., 6 figs.

  6. DASHBOARDS & CONTROL CHARTS EXPERIENCES IN IMPROVING SAFETY AT HANFORD WASHINGTON

    SciTech Connect (OSTI)

    PREVETTE, S.S.

    2006-02-27

    The aim of this paper is to demonstrate the integration of safety methodology, quality tools, leadership, and teamwork at Hanford and their significant positive impact on safe performance of work. Dashboards, Leading Indicators, Control charts, Pareto Charts, Dr. W. Edward Deming's Red Bead Experiment, and Dr. Deming's System of Profound Knowledge have been the principal tools and theory of an integrated management system. Coupled with involved leadership and teamwork, they have led to significant improvements in worker safety and protection, and environmental restoration at one of the nation's largest nuclear cleanup sites.

  7. Altering Wettability in Gas Condensate Sandstone Reservoirs for Gas Mobillity Improvement 

    E-Print Network [OSTI]

    Fernandez Martinez, Ruth Gabriela

    2012-07-16

    w 7). well. The li p to 50% i of feet in ra stration bel nce increase mobility in incremental r ). here condens quid saturati n some ca dius, but ev ow we can s. Condens this area adial distanc 2 ate on ses en see ate... (Anderson, W.G. 1987), P? ? P???P?,?????????????...?(1) where ?? is capillary pressure, ??? represents the pressure of the gas phase and ?? represents the pressure of the liquid phase in gas-condensate systems. As the condensate bank is formed...

  8. Improved Controls for Fusion RF Systems. Final technical report

    SciTech Connect (OSTI)

    Casey, Jeffrey A. [Rockfield Research Inc., Las Vegas, NV (United States)

    2011-11-08

    We have addressed the specific requirements for the integrated systems controlling an array of klystrons used for Lower Hybrid Current Drive (LHCD). The immediate goal for our design was to modernize the transmitter protection system (TPS) for LHCD on the Alcator C-Mod tokamak at the MIT Plasma Science and Fusion Center (MIT-PSFC). Working with the Alcator C-Mod team, we have upgraded the design of these controls to retrofit for improvements in performance and safety, as well as to facilitate the upcoming expansion from 12 to 16 klystrons. The longer range goals to generalize the designs in such a way that they will be of benefit to other programs within the international fusion effort was met by designing a system which was flexible enough to address all the MIT system requirements, and modular enough to adapt to a large variety of other requirements with minimal reconfiguration.

  9. Converging Redundant Sensor Network Information for Improved Building Control

    SciTech Connect (OSTI)

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

    2007-09-30

    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.

  10. Condensing economizers for thermal efficiency improvements and emissions control

    SciTech Connect (OSTI)

    Heaphy, J.P.; Carbonara, J.; Litzke, W.; Butcher, T.A.

    1993-12-31

    Flue gas condensing economizers improve the thermal efficiency of boilers by recovering sensible heat and water vapor latent heat from flue gas exhaust. In addition to improving thermal efficiency, condensing economizers also have the potential to act as control devices for emissions of particulates, SO{sub x}, and air toxics. Both Consolidated Edison of New York and Brookhaven National LaborAtory are currently working on condensing economizer technology with an emphasis on developing their potential for emissions control. Con Edison is currently conducting a condensing economizer demonstration at their oil-fired 74th Street Station in New York. Since installing this equipment in February of 1992 a heat rate improvement of 800 Btu/kWh has been seen. At another location, Ravenswood Station, a two stage condensing economizer has been installed in a pilot test. In this advanced configuration -the ``Integrated Flue Gas Treatment or IFGT system- two heat exchanger sections are installed and sprays of water with and without SO{sub 2} sorbents are included. Detailed studies of the removal of particulates, SO{sub 2}, SO{sub 3}, and selected air toxics have been done for a variety of operating conditions. Removal efficiencies for SO{sub 2} have been over 98% and for SO{sub 3} over 65%. Brookhaven National Laboratory`s studies involve predicting and enhancing particulate capture in condensing economizers with an emphasis on small, coal-fired applications. This work is funded by the Pittsburgh Energy Technology Center of the Department of Energy. Flyash capture efficiencies as high as 97% have been achieved to date with a single stage economizer.

  11. IMPLEMENTION AND TESTING OF A FAULT DETECTION SOFTWARE TOOL FOR IMPROVING CONTROL SYSTEM

    E-Print Network [OSTI]

    Diamond, Richard

    INTRODUCTION Heating, ventilating, and air-conditioning (HVAC) systems are typically controlled usingIMPLEMENTION AND TESTING OF A FAULT DETECTION SOFTWARE TOOL FOR IMPROVING CONTROL SYSTEM-based, feedforward control scheme that can improve control performance over traditional PID feedback control and also

  12. SUBMITTED -IEEE CONFERENCE ON DECISION AND CONTROL -2003 1 Robust Mobile Robotic Formation Control Using

    E-Print Network [OSTI]

    Control Using Internet-Like Protocols Rafael Sandoval-Rodriguez , Chaouki T. Abdallah , Peter F. Hokayem , and Edl Schamiloglu. Electrical & Computer Engineering Department MSC01 1100 1 University of New Mexico Albuquerque, NM 87131-0001 {rsandova,chaouki,hokayem,edl}@eece.unm.edu Abstract This work presents an Internet

  13. Analysis, design, and control of an omnidirectional mobile robot in rough terrain

    E-Print Network [OSTI]

    Udengaard, Martin Richard

    2008-01-01

    An omnidirectional mobile robot is able, kinematically, to move in any direction regardless of current pose. To date, nearly all designs and analyses of omnidirectional mobile robots have considered the case of motion on ...

  14. The effects of user mobility on usage parameter control (UPC) in wireless ATM systems

    SciTech Connect (OSTI)

    Sholander, P.; Martinez, L.; Tolendino, L. [Sandia National Labs., Albuquerque, NM (United States); Mah, B.A. [Sandia National Labs., Livermore, CA (United States)

    1997-07-01

    Wireless Asynchronous Transfer Mode (WATM) networks pose new traffic management problems. One example is the effect of user mobility on Usage Parameter Control (UPC). If the UPC algorithm resets after each handoff between wireless-cells, then users can cheat on their traffic contract. This paper derives explicit relationships between a user`s traffic parameters (Peak Cell Rate, Sustained Cell Rate and Maximum Burst Size), their transit time per wireless-cell, their maximum sustained cheating-rate and the Generic Cell Rate Algorithm`s (GCRA`s) Limit (L) parameter. It also shows that the GCRA can still effectively police Constant Bit Rate (CBR) traffic, but not some types of realistic Variable Bit Rate (VBR) traffic.

  15. An Energy-efficient Concurrency Control Algorithm for Mobile Ad-hoc Network Databases

    E-Print Network [OSTI]

    Gruenwald, Le

    and applications [5]. Also battery technology is not developed as rapidly as mobile devices and wireless and battery- powered nodes, and every node can roam freely. A mobile database system built on a MANET is called a MANET database system. In this system, both clients and servers are mobile, wireless and battery

  16. Compact vehicle drive module having improved thermal control

    DOE Patents [OSTI]

    Meyer, Andreas A.; Radosevich, Lawrence D.; Beihoff, Bruce C.; Kehl, Dennis L.; Kannenberg, Daniel G.

    2006-01-03

    An electric vehicle drive includes a thermal support may receive one or more power electronic circuits. The support may aid in removing heat from the circuits through fluid circulating through the support, which may be controlled in a closed-loop manner. Interfacing between circuits, circuit mounting structure, and the support provide for greatly enhanced cooling. The support may form a shield from both external EMI/RFI and from interference generated by operation of the power electronic circuits. Features may be provided to permit and enhance connection of the circuitry to external circuitry, such as improved terminal configurations. Modular units may be assembled that may be coupled to electronic circuitry via plug-in arrangements or through interface with a backplane or similar mounting and interconnecting structures.

  17. Radiant energy receiver having improved coolant flow control means

    DOE Patents [OSTI]

    Hinterberger, H.

    1980-10-29

    An improved coolant flow control for use in radiant energy receivers of the type having parallel flow paths is disclosed. A coolant performs as a temperature dependent valve means, increasing flow in the warmer flow paths of the receiver, and impeding flow in the cooler paths of the receiver. The coolant has a negative temperature coefficient of viscosity which is high enough such that only an insignificant flow through the receiver is experienced at the minimum operating temperature of the receiver, and such that a maximum flow is experienced at the maximum operating temperature of the receiver. The valving is accomplished by changes in viscosity of the coolant in response to the coolant being heated and cooled. No remotely operated valves, comparators or the like are needed.

  18. Role of intrusion-induced salt mobility in controlling the formation of the enigmatic `Silverpit Crater', UK Southern North Sea

    E-Print Network [OSTI]

    Role of intrusion-induced salt mobility in controlling the formation of the enigmatic `Silverpit of several WNW­ESE-striking Cenozoic folds, including a buried salt withdrawal syncline in the axis of which-depositional diagenetic alteration and structural failure resulting from the geometry of their respective underlying salt

  19. Improving Construction Workflow- The Role of Production Planning and Control

    E-Print Network [OSTI]

    Hamzeh, Farook

    2009-01-01

    LPS) for production planning and control. It describes theFRAMEWORK FOR PRODUCTION PLANNING AND CONTROL Chapter 5The Role of Production Planning and Control by Farook Ramiz

  20. Fail safe controllable output improved version of the Electromechanical battery

    DOE Patents [OSTI]

    Post, Richard F. (Walnut Creek, CA)

    1999-01-01

    Mechanical means are provided to control the voltages induced in the windings of a generator/motor. In one embodiment, a lever is used to withdraw or insert the entire stator windings from the cavity where the rotating field exists. In another embodiment, voltage control and/or switching off of the output is achievable with a variable-coupling generator/motor. A stator is made up of two concentric layers of windings, with a larger number of turns on the inner layer of windings than the outer layer of windings. The windings are to be connected in series electrically, that is, their voltages add vectorially. The mechanical arrangement is such that one or both of the windings can be rotated with respect to the other winding about their common central axis. Another improved design for the stator assembly of electromechanical batteries provides knife switch contacts that are in electrical contact with the stator windings. The operation of this embodiment depends on the fact that an abnormally large torque will be exerted on the stator structure during any short-circuit condition.

  1. Fail safe controllable output improved version of the electromechanical battery

    DOE Patents [OSTI]

    Post, R.F.

    1999-01-19

    Mechanical means are provided to control the voltages induced in the windings of a generator/motor. In one embodiment, a lever is used to withdraw or insert the entire stator windings from the cavity where the rotating field exists. In another embodiment, voltage control and/or switching off of the output is achievable with a variable-coupling generator/motor. A stator is made up of two concentric layers of windings, with a larger number of turns on the inner layer of windings than the outer layer of windings. The windings are to be connected in series electrically, that is, their voltages add vectorially. The mechanical arrangement is such that one or both of the windings can be rotated with respect to the other winding about their common central axis. Another improved design for the stator assembly of electromechanical batteries provides knife switch contacts that are in electrical contact with the stator windings. The operation of this embodiment depends on the fact that an abnormally large torque will be exerted on the stator structure during any short-circuit condition. 4 figs.

  2. Engine Control Improvement through Application of Chaotic Time Series Analysis

    SciTech Connect (OSTI)

    Green, J.B., Jr.; Daw, C.S.

    2003-07-15

    The objective of this program was to investigate cyclic variations in spark-ignition (SI) engines under lean fueling conditions and to develop options to reduce emissions of nitrogen oxides (NOx) and particulate matter (PM) in compression-ignition direct-injection (CIDI) engines at high exhaust gas recirculation (EGR) rates. The CIDI activity builds upon an earlier collaboration between ORNL and Ford examining combustion instabilities in SI engines. Under the original CRADA, the principal objective was to understand the fundamental causes of combustion instability in spark-ignition engines operating with lean fueling. The results of this earlier activity demonstrated that such combustion instabilities are dominated by the effects of residual gas remaining in each cylinder from one cycle to the next. A very simple, low-order model was developed that explained the observed combustion instability as a noisy nonlinear dynamical process. The model concept lead to development of a real-time control strategy that could be employed to significantly reduce cyclic variations in real engines using existing sensors and engine control systems. This collaboration led to the issuance of a joint patent for spark-ignition engine control. After a few years, the CRADA was modified to focus more on EGR and CIDI engines. The modified CRADA examined relationships between EGR, combustion, and emissions in CIDI engines. Information from CIDI engine experiments, data analysis, and modeling were employed to identify and characterize new combustion regimes where it is possible to simultaneously achieve significant reductions in NOx and PM emissions. These results were also used to develop an on-line combustion diagnostic (virtual sensor) to make cycle-resolved combustion quality assessments for active feedback control. Extensive experiments on engines at Ford and ORNL led to the development of the virtual sensor concept that may be able to detect simultaneous reductions in NOx and PM emissions under low temperature combustion (LTC) regimes. An invention disclosure was submitted to ORNL for the virtual sensor under the CRADA. Industrial in-kind support was available throughout the project period. Review of the research results were carried out on a regular basis (annual reports and meetings) followed by suggestions for improvement in ongoing work and direction for future work. A significant portion of the industrial support was in the form of experimentation, data analysis, data exchange, and technical consultation.

  3. Converging Redundant Sensor Network Information for Improved Building Control

    SciTech Connect (OSTI)

    Dale K. Tiller; Gregor P. Henze

    2005-12-01

    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.

  4. Improved Combustion Efficiencies - Control Systems for Process Heaters and Boilers 

    E-Print Network [OSTI]

    Varma, A. C.; Prengle, H. W.

    1979-01-01

    % O 2 ) by using high efficiency low excess air burners. 3. Installing modern combustion control systems for automatic control of proper air/fuel ratio to optimize heater combustion. 4. Reducing radiation losses from the furnace to about 1... fuels. CONVENTIONAL HEATER CONTROLS A conventional control system is defined as the minimum control instrumentation necessary, as illustra ted by Figure 3. The feed outlet temperature controller provides the set point for the burner fuel pressure...

  5. Improve Boiler System Operations- Application of Statistical Process Control 

    E-Print Network [OSTI]

    Scarr, D.; Shea, D.

    1989-01-01

    -fold reduction in process variability, $2.3 million/year cost reduction, and improved reliability and customer relations....

  6. A Study of Grouping Effect On Mobile Actuator Sensor Networks for Distributed Feedback Control of Diffusion Process Using Central Voronoi Tessellations

    E-Print Network [OSTI]

    Ren, Wei

    grouping, mobile actuator networks, coordinated control, diffusion process, pollution neutralization, Centroidal Voronoi Tessellation. I. INTRODUCTION The deployment of large groups of unmanned vehicles for pollution detection which mo- tivates "Mobile Actuator and Sensor Network (MAS-net) project" in CSOIS, Utah

  7. Improved Design of Nuclear Reactor Control System | U.S. DOE...

    Office of Science (SC) Website

    Improved Design of Nuclear Reactor Control System Nuclear Physics (NP) NP Home About Research Facilities Science Highlights Benefits of NP Applications of Nuclear Science...

  8. A CoordinatedJacobian Transpose Control for Mobile Multi-limbed Robotic Systems

    E-Print Network [OSTI]

    Mavroidis, Constantinos

    such as in the sea,in space, and at nuclear sites presents some challenging technical problems, although such systems robotic systems generally involve a relatively simple vehicle for mobility, such as a submarine

  9. Infants Control of a Robotic Mobility Device Madeline E. Smith, Carole Dennis, Sc.D., OTR, Sharon Stansfield, PhD,

    E-Print Network [OSTI]

    Stansfield, Sharon

    Infants Control of a Robotic Mobility Device Madeline E. Smith, Carole Dennis, Sc.D., OTR, SharonRobots with sonar have been suggested as a viable developed such a system using a Pioneer 3 robot and various input devices

  10. Tandem mobile robot system

    DOE Patents [OSTI]

    Buttz, James H. (Albuquerque, NM); Shirey, David L. (Albuquerque, NM); Hayward, David R. (Albuquerque, NM)

    2003-01-01

    A robotic vehicle system for terrain navigation mobility provides a way to climb stairs, cross crevices, and navigate across difficult terrain by coupling two or more mobile robots with a coupling device and controlling the robots cooperatively in tandem.

  11. Improving Control Performance across AWGN Channels using a Relay Node

    E-Print Network [OSTI]

    Laneman, J. Nicholas

    to a controller across an additive white Gaussian noise channel. The designer can optionally utilize a relay node to assist the controller; however the total transmission power consumed by the sensor and the relay node for the stabilizability of the plant through such schemes. The analysis suggests that it is useful to provide a relay node

  12. Improved Control Strategy for Active Bouncers used in Klystron Modulators

    E-Print Network [OSTI]

    Aguglia, D; Benedetti, M; Garcia Retegui, R; Maestri, S; Nisbet, D

    2012-01-01

    This paper introduces a closed-loop control system for klystron modulators. The system is based on the discharge of a capacitor into a step-up voltage transformer and an active bouncer implemented with a multiphase buck converter. In order to obtain a constant Klystron voltage at the at-top, the active bouncer must compensate both the capacitor discharge and the pulse transformer characteristic. The proposed control includes an inner voltage regulation loop that controls the active bouncer output voltage and an outer one that controls the klystron voltage. The primary side current and main capacitor voltage are included in the regulation loops to simplify the controllers. Simulations demonstrate that the strategy adopted allows to obtain a precision better than 0:1% on a 110 kV klystron. Experimental tests have shown that the multiphase converter is able to track a high dynamics reference even under variable output voltage conditions.

  13. IMPROVEMENTS TO THE CRYOGENIC CONTROL SYSTEM ON DIII-D

    SciTech Connect (OSTI)

    HOLTROP,K.L; ANDERSON,P.M; MAUZEY,P.S

    2003-10-01

    OAK-B135 The cryogenic facility that is part of the DIII-D tokamak system supplies liquid nitrogen and liquid helium to the superconducting magnets used for electron cyclotron heating, the D{sub 2} pellet injection system, cryopumps in the DIII-D vessel, and cryopanels in the neutral beam injection system. The liquid helium is liquefied on site using a Sulzer liquefier that has a 150 l/h liquefaction rate. Control of the cryogenic facility at DIII-D was initially accomplished through the use of three different programmable logic controllers (PLCs). Recently, two of those three PLCs, a Sattcon PLC controlling the Sulzer liquefier and a Westinghouse PLC, were removed and all their control logic was merged into the remaining PLC, a Siemens T1555. This replacement was originally undertaken because the removed PLCs were obsolete and unsupported. However, there have been additional benefits from the replacement. The replacement of the RS-232 serial links between the graphical user interface and the PLCs with a high speed Ethernet link allows for real-time display and historical trending of nearly all the cryosystem's data. this has greatly increased the ability to troubleshoot problems with the system, and has permitted optimization of the cryogenic system's performance because of the increased system integration. To move the control logic of the Sattcon control loops into the T1555, an extensive modification of the basic PID control was required. These modifications allow for better control of the control loops and are now being incorporated in other control loops in the system.

  14. Recommendations for Improving Fecal Coliform Pollution Control in Gwinnett County, Georgia

    E-Print Network [OSTI]

    Radcliffe, David

    Recommendations for Improving Fecal Coliform Pollution Control in Gwinnett County, Georgia Upper for Improving Fecal Coliform Pollution Control 2 1.0 BACKGROUND and INTRODUCTION The 1972 Amendments to the Federal Clean Water Act require the creation of a Total Maximum Daily Load (TMDL) for a body of water

  15. PH Sensitive Polymers for Improving Reservoir Sweep and Conformance Control in Chemical Flooring

    SciTech Connect (OSTI)

    Mukul Sharma; Steven Bryant; Chun Huh

    2008-03-31

    There is an increasing opportunity to recover bypassed oil from depleted, mature oilfields in the US. The recovery factor in many reservoirs is low due to inefficient displacement of the oil by injected fluids (typically water). The use of chemical flooding methods to increase recovery efficiencies is severely constrained by the inability of the injected chemicals to contact the bypassed oil. Low sweep efficiencies are the primary cause of low oil recoveries observed in the field in chemical flooding operations even when lab studies indicate high oil recovery efficiency. Any technology that increases the ability of chemical flooding agents to better contact the remaining oil and reduce the amount of water produced in conjunction with the produced oil will have a significant impact on the cost of producing oil domestically in the US. This translates directly into additional economically recoverable reserves, which extends the economic lives of marginal and mature wells. The objective of this research project was to develop a low-cost, pH-triggered polymer for use in IOR processes to improve reservoir sweep efficiency and reservoir conformance in chemical flooding. Rheological measurements made on the polymer solution, clearly show that it has a low viscosity at low pH and exhibits a sudden increase in viscosity (by 2 orders of magnitude or more) at a pH of 3.5 to 4. This implies that the polymer would preferentially flow into zones containing water since the effective permeability to water is highest in these zones. As the pH of the zone increases due to the buffering capacity of the reservoir rock, the polymer solution undergoes a liquid to gel transition causing a sharp increase in the viscosity of the polymer solution in these zones. This allows operationally robust, in-depth conformance treatment of such water bearing zones and better mobility control. The rheological properties of HPAM solutions were measured. These include: steady-shear viscosity and viscoelastic behavior as functions of pH; shear rate; polymer concentration; salinity, including divalent ion effects; polymer molecular weight; and degree of hydrolysis. A comprehensive rheological model was developed for HPAM solution rheology in terms of: shear rate; pH; polymer concentration; and salinity, so that the spatial and temporal changes in viscosity during the polymer flow in the reservoir can be accurately modeled. A series of acid coreflood experiments were conducted to understand the geochemical reactions relevant for both the near-wellbore injection profile control and for conformance control applications. These experiments showed that the use hydrochloric acid as a pre-flush is not viable because of the high reaction rate with the rock. The use of citric acid as a pre-flush was found to be quite effective. This weak acid has a slow rate of reaction with the rock and can buffer the pH to below 3.5 for extended periods of time. With the citric acid pre-flush the polymer could be efficiently propagated through the core in a low pH environment i.e. at a low viscosity. The transport of various HPAM solutions was studied in sandstones, in terms of permeability reduction, mobility reduction, adsorption and inaccessible pore volume with different process variables: injection pH, polymer concentration, polymer molecular weight, salinity, degree of hydrolysis, and flow rate. Measurements of polymer effluent profiles and tracer tests show that the polymer retention increases at the lower pH. A new simulation capability to model the deep-penetrating mobility control or conformance control using pH-sensitive polymer was developed. The core flood acid injection experiments were history matched to estimate geochemical reaction rates. Preliminary scale-up simulations employing linear and radial geometry floods in 2-layer reservoir models were conducted. It is clearly shown that the injection rate of pH-sensitive polymer solutions can be significantly increased by injecting it at a pH below 3.5 (at a fixed bottom-hole pressure). This improvement in injectivity by a fa

  16. Advanced technologies for improving high frequency performance of AlGaN/GaN high electron mobility transistors

    E-Print Network [OSTI]

    Chung, Jinwook W. (Jinwook Will)

    2008-01-01

    In this thesis, we have used a combination of physical analysis, numerical simulation and experimental work to identify and overcome some of the main challenges in AlGaN/GaN high electron mobility transistors (HEMTs) for ...

  17. Optimizing HVAC Control to Improve Building Comfort and Energy Performance 

    E-Print Network [OSTI]

    Song, L.; Joo, I.; Dong, D.; Liu, M.; Wang, J.; Hansen, K.; Quiroz, L.; Swiatek, A.

    2003-01-01

    include a terminal box temperature integrated minimum airflow reset. The building has been used and operated based on the design intents. This paper presents both the existing and the optimal control schedules, which include the VAV box operation schedule...

  18. Inexpensive CO2 Thickening Agents for Improved Mobility Control of CO2 Floods

    SciTech Connect (OSTI)

    Robert Enick; Eric Beckman; Andrew Hamilton

    2005-08-31

    The objective of this research was the design, synthesis and evaluation of inexpensive, non-fluorous carbon dioxide thickening agents. We followed the same strategy employed in the design of fluorinated CO{sub 2} polymeric thickeners. First, a highly CO{sub 2}-philic, hydrocarbon-based monomer was to be identified. Polymers or oligomers of this monomer were then synthesized. The second step was to design a CO{sub 2}-thickener based on these CO{sub 2}-philic polymers. Two types of thickeners were considered. The first was a copolymer in which the CO{sub 2}-philic monomer was combined with a small proportion of CO{sub 2}-phobic associating groups that could cause viscosity-enhancing intermolecular interactions to occur. The second was a small hydrogen-bonding compound with urea groups in the core to promote intermolecular interactions that would cause the molecules to 'stack' in solution while the arms were composed of the CO{sub 2}-philic oligomers. Although we were not able to develop a viable thickener that exhibited high enough CO{sub 2} solubility at EOR MMP conditions to induce a viscosity increase, we made significant progress in our understanding of CO{sub 2}-soluble compounds that can be used in subsequent studies to design CO{sub 2}-soluble thickeners or CO{sub 2}-soluble surfactant-based foaming agents. These findings are detailed in this final report. In summary, we assessed many polymers and verified that the most CO{sub 2}-soluble oxygenated hydrocarbon polymer is poly(vinyl acetate), PVAc. This is primarily due to the presence of both ether and carbonyl oxygens associated with acetate-rich compounds. In addition to polymers, we also made small acetate-rich molecules that were also capable of associating in solution via the inclusion of hydrogen-bonding groups in hopes of forming viscosity-enhancing macromolecules. Despite the presence of multiple acetate groups in these compounds, which can impart incredible CO{sub 2}-solubility to many compounds, our attempts to make acetate-rich high molecular weight polymers and small hydrogen-bonding compounds did not yield a highly CO{sub 2}-soluble polymer or hydrogen-bonding associative thickener. The conclusions of our molecular modeling calculations confirmed that although acetates are indeed 'CO{sub 2}-philic', nitrogen-containing amines also interact favorably with CO{sub 2} and should also be examined. Therefore we obtained and synthesized many N-rich (e.g. amine-containing) polymers. Unfortunately, we found that the intermolecular polymer-polymer interactions between the amines were so strong that the polymers were essentially insoluble in CO{sub 2}. For the convenience of the reader, a table of all of the polymers evaluated during this research is provided.

  19. Automating Internal Control at a Coffee Cooperative using Mobile Phones Improves Efficiency and Accountability

    E-Print Network [OSTI]

    Parikh, Tapan S.

    , geographic specialization and/or social impact. However, the lack of available transport, in- frastructure by capitalizing their quality advantage, sustainable growing practices and social impact. Many of these rely and Accountability Yael Schwartzman UC Berkeley Berkeley, CA yaelsf@gmail.com Mario Vila CEPCO Oaxaca, Mexico

  20. Improving Retrieval Effectiveness by Reranking Documents Based on Controlled Vocabulary

    E-Print Network [OSTI]

    Kamps, Jaap

    . There is a common availability of classification terms in on- line text collections and digital libraries goal is to explore the use of additional classification informa- tion for improving retrieval effectiveness. Earlier research explored the effect of adding classification terms to user queries, leading

  1. Active Wake Redirection Control to Improve Energy Yield (Poster)

    SciTech Connect (OSTI)

    Churchfield, M. J.; Fleming, P.; DeGeorge, E.; Bulder, B; White, S. M.

    2014-10-01

    Wake effects can dramatically reduce the efficiency of waked turbines relative to the unwaked turbines. Wakes can be deflected, or 'redirected,' by applying yaw misalignment to the turbines. Yaw misalignment causes part of the rotor thrust vector to be pointed in the cross-stream direction, deflecting the flow and the wake. Yaw misalignment reduces power production, but the global increase in wind plant power due to decreased wake effect creates a net increase in power production. It is also a fairly simple control idea to implement at existing or new wind plants. We performed high-fidelity computational fluid dynamics simulations of the wake flow of the proposed Fishermen's Atlantic City Windfarm (FACW) that predict that under certain waking conditions, wake redirection can increase plant efficiency by 10%. This means that by applying wake redirection control, for a given watersheet area, a wind plant can either produce more power, or the same amount of power can be produced with a smaller watersheet area. With the power increase may come increased loads, though, due to the yaw misalignment. If misalignment is applied properly, or if layered with individual blade pitch control, though, the load increase can be mitigated. In this talk we will discuss the concept of wake redirection through yaw misalignment and present our CFD results of the FACW project. We will also discuss the implications of wake redirection control on annual energy production, and finally we will discuss plans to implement wake redirection control at FACW when it is operational.

  2. Poincaré-based control of delayed measured systems: Limitations and Improved Control

    E-Print Network [OSTI]

    Jens Christian Claussen

    2007-12-27

    When a chaotic system is to be stabilized to a unstable orbit, delayed measurement of the system limits the applicability of chaos control techniqes. These limitations are analyzed and control schemes as linear predictive logging control (LPLC) and memory difference control (MDC) are introduced which can overcome those limitations for chaos control schemes that act in the Poincar\\'{e} section as Ott-Grebogi-Yorke (OGY) control and Bielawski-Derozier_Glorieux control (difference control).

  3. Roles of Naturally Occurring Bacteria in Controlling Iodine-129 Mobility in Subsurface Soils 

    E-Print Network [OSTI]

    Li, Hsiu-Ping

    2012-10-19

    (IO3-) and is the predominant species in the terrestrial environment due to prevailing pH and Eh conditions. In order to transform I- to less mobile organo-iodine (OI), strong oxidants are necessary to activate the first electron transfer step from I...

  4. International Travel with Mobile Devices BRIAN MITCHELL WARSHAWSKY, JD CCEP Systemwide Export Control Officer

    E-Print Network [OSTI]

    Oviedo, Néstor J.

    International Travel with Mobile Devices BRIAN MITCHELL WARSHAWSKY, JD CCEP Systemwide Export" "...via airport searches, hotel room incursions, computer/device accessing, telephone monitoring, personal or border, If your device is selected for a momentary out-of-sight inspection lasting longer than 90 seconds

  5. Improved Model Reference Adaptive Control Using the Euler Operator

    E-Print Network [OSTI]

    Oh, Paul

    and experiment were performed on an electrohydraulic servo valve. The re­ sulting controller will be applied an electrohydraulic (EH) servo valve. It is a common actuator found in sys­ tems like earth­moving equipment, flight tempera­ ture, compressibility and internal leakage. In situa­ tions where high position accuracy

  6. Refining and Improving Control Techniques COOPERATIVE RESEARCH AND MANAGEMEN

    E-Print Network [OSTI]

    agree that it i s good, t h a t it one member of the cooperative team. And since i s needed, and t h- and management w i l l respond with t h e i r partic- toe control practices you now use. Instead, u l a r points

  7. Improved Power Control in the Palm of Your Hand

    Broader source: Energy.gov [DOE]

    A new kind of thyristor – an electronic switch – has the potential to change the landscape for power control and conversion.? And it's thanks to a partnership between the Energy Department’s Sandia National Laboratory (SNL) and GeneSiC Semiconductor that this technology is now on the market. Learn more.

  8. Mobile Zigbee Sensor Networks

    E-Print Network [OSTI]

    Anantdeep, Er; Kaur, Er Balpreet

    2010-01-01

    OPNET Modeler accelerates network R&D and improves product quality through high-fidelity modeling and scalable simulation. It provides a virtual environment for designing protocols and devices, and for testing and demonstrating designs in realistic scenarios prior to production. OPNET Modeler supports 802.15.4 standard and has been used to make a model of PAN. Iterations have been performed by changing the Power of the transmitter and the throughput will has been analyzed to arrive at optimal values.An energy-efficient wireless home network based on IEEE 802.15.4, a novel architecture has been proposed. In this architecture, all nodes are classified into stationary nodes and mobile nodes according to the functionality of each node. Mobile nodes are usually battery-powered, and therefore need low-power operation. In order to improve power consumption of mobile nodes, effective handover sequence based on MAC broadcast and transmission power control based on LQ (link quality) are employed. Experimental resul...

  9. Simulation development and analysis of attitude-control system architectures for an astronaut mobility unit

    E-Print Network [OSTI]

    Rize, Jared Philip

    2014-01-01

    Control-moment gyroscopes (CMGs) are spacecraft attitude-control actuators which control the spacecraft's orientation and pointing. CMGs operate on electrical power and therefore obey the the conservation of angular momentum. ...

  10. DETERMINATION, CONTROL AND IMPROVEMENT OF AN SKA RADIO ENVIRONMENT IN SOUTH AFRICA

    E-Print Network [OSTI]

    Ellingson, Steven W.

    DETERMINATION, CONTROL AND IMPROVEMENT OF AN SKA RADIO ENVIRONMENT IN SOUTH AFRICA By Neël Smuts1 ABSTRACT South Africa, in its bid to host the SKA2 , has adopted a dual approach to determine, assess

  11. Leveraging Statistical Process Control for continuous improvement of the manufacturing process

    E-Print Network [OSTI]

    Fuller, Stephen Patrick

    2015-01-01

    Statistical Process Control (SPC) has been applied to manufacturing processes for several decades as a means of ensuring product quality and has become a primary tool for the application of continuous improvement efforts. ...

  12. Distributed Battery Control to Improve Peak Power Shaving Efficiency in Data Centers

    E-Print Network [OSTI]

    Simunic, Tajana

    Distributed Battery Control to Improve Peak Power Shaving Efficiency in Data Centers Baris Aksanli, Eddie Pettis and Tajana S. Rosing UCSD, Google Stored energy in batteries can be used to cap peak power.8% 99% 91.5% 84% Battery Configuration StudyBattery Configuration Study Goal: Improve the overall

  13. Cyclone Boiler Reburn NOx Control Improvements via Cyclone Design Improvements and Advanced Air Staging 

    E-Print Network [OSTI]

    Morabito, B.; Nee, B.; Goff, V.; Maringo, G.

    2008-01-01

    is the practice of reducing the stoichiometry in the burner zone to near or less than 1.0 and adding the remaining air needed to complete combustion through Over Fire Air (OFA) ports above the burners. Limiting the oxygen available to the fuel as it begins... of the combustion air allowing for equal or better operation with less excess air would in theory, reduce NOx and decrease the natural gas required for control. Babcock & Wilcox Burnout Zone Cyclone Burners Reburn Zone Main Combustion Zone Reburn...

  14. Direct Power Control of Doubly-Fed Generator Based Wind Turbine Converters to Improve Low Voltage

    E-Print Network [OSTI]

    Kimball, Jonathan W.

    by an Industrial Power Corruptor (IPC) in the laboratory. I. INTRODUCTION The new grid code requirements for windDirect Power Control of Doubly-Fed Generator Based Wind Turbine Converters to Improve Low Voltage power integration state that doubly fed induction generator (DFIG) controllers should be capable

  15. Adaptive Software Testing in the Context of an Improved Controlled Markov Chain Model

    E-Print Network [OSTI]

    Kundu, Sukhamay

    Adaptive Software Testing in the Context of an Improved Controlled Markov Chain Model Hai Hu, Chang@buaa.edu.cn Abstract Adaptive software testing is the counterpart of adaptive control in software testing. It means that software testing strategy should be adjusted on- line by using the testing data collected during software

  16. High carrier mobility in orientation-controlled large-grain (?50??m) Ge directly formed on flexible plastic by nucleation-controlled gold-induced-crystallization

    SciTech Connect (OSTI)

    Park, Jong-Hyeok, E-mail: j-park@nano.ed.kyushu-u.ac.jp [Department of Electronics, Kyushu University, 744 Motooka, Fukuoka 819-0395 (Japan); JSPS Research Fellow, 5-3-1 Kojimachi, Chiyoda-ku, Tokyo 102-0083 (Japan); Kasahara, Kenji; Hamaya, Kohei; Miyao, Masanobu; Sadoh, Taizoh, E-mail: sadoh@ed.kyushu-u.ac.jp [Department of Electronics, Kyushu University, 744 Motooka, Fukuoka 819-0395 (Japan)

    2014-06-23

    High-carrier-mobility semiconductors on flexible-plastic are essential to realize flexible electronics. For this purpose, electrical properties of orientation-controlled large-grain Ge crystals on flexible-plastic directly formed by nucleation-controlled gold-induced-crystallization (GIC) are examined, and compared with those obtained by aluminum-induced-crystallization (AIC). The Ge crystals show p-type conductions. Here, hole concentrations are 2.2?×?10{sup 17} and 5.8?×?10{sup 20}?cm{sup ?3} for GIC-Ge and AIC-Ge, respectively, which are explained on the basis of the solubility of Au and Al in Ge. Thanks to the low hole concentration, GIC-Ge shows high hole mobility (160?cm{sup 2}?V{sup ?1}?s{sup ?1}) compared with AIC-Ge (37?cm{sup 2}?V{sup ?1}?s{sup ?1}). These demonstrate significant advantage of GIC to realize high-performance flexible-electronics.

  17. Adaptive Mobile Sensor Positioning for Multi-Static Target Tracking

    E-Print Network [OSTI]

    Swindlehurst, A. Lee

    improvements in battery, micro-controller, and sensor technologies have resulted in the development1 Adaptive Mobile Sensor Positioning for Multi-Static Target Tracking Pengcheng Zhan, David W UAV agents in a target tracking application where performance is improved by exploiting each agent

  18. Control of a Six-Legged Mobile Robot Using the Soar Cognitive Architecture

    E-Print Network [OSTI]

    . The results of experiments in which the Cognitive Robotic System was used to control the hexapod on missions

  19. Improving Control System Cyber-State Awareness using Known Secure Sensor Measurements

    SciTech Connect (OSTI)

    Ondrej Linda; Milos Manic; Miles McQueen

    2012-09-01

    Abstract—This paper presents design and simulation of a low cost and low false alarm rate method for improved cyber-state awareness of critical control systems - the Known Secure Sensor Measurements (KSSM) method. The KSSM concept relies on physical measurements to detect malicious falsification of the control systems state. The KSSM method can be incrementally integrated with already installed control systems for enhanced resilience. This paper reviews the previously developed theoretical KSSM concept and then describes a simulation of the KSSM system. A simulated control system network is integrated with the KSSM components. The effectiveness of detection of various intrusion scenarios is demonstrated on several control system network topologies.

  20. Improving CO2 Efficiency for Recovering Oil in Heterogeneous Reservoirs

    SciTech Connect (OSTI)

    Grigg, Reid B.; Svec, Robert K.

    2003-03-10

    The work strived to improve industry understanding of CO2 flooding mechanisms with the ultimate goal of economically recovering more of the U.S. oil reserves. The principle interests are in the related fields of mobility control and injectivity.

  1. IEEE TRANSACTIONS ON CONTROL SYSTEMS TECHNOLOGY, VOL. 16, NO. 6, NOVEMBER 2008 1265 Sensor Fusion for Improved Control of Piezoelectric

    E-Print Network [OSTI]

    Fleming, Andrew J.

    for Improved Control of Piezoelectric Tube Scanners Andrew J. Fleming, Member, IEEE, Adrian G. Wills, and S. O. Reza Moheimani, Senior Member, IEEE Abstract--In nanopositioning applications, capacitive or in is required. In this study, a capacitive displacement sensor is used with a piezoelectric strain voltage

  2. Fractional order PID controller for improvement of PMSM speed control in aerospace applications

    SciTech Connect (OSTI)

    Saraji, Ali Motalebi; Ghanbari, Mahmood

    2014-12-10

    Because of the benefits reduced size, cost and maintenance, noise, CO2 emissions and increased control flexibility and precision, to meet these expectations, electrical equipment increasingly utilize in modern aircraft systems and aerospace industry rather than conventional mechanic, hydraulic, and pneumatic power systems. Electric motor drives are capable of converting electrical power to drive actuators, pumps, compressors, and other subsystems at variable speeds. In the past decades, permanent magnet synchronous motor (PMSM) and brushless dc (BLDC) motor were investigated for aerospace applications such as aircraft actuators. In this paper, the fractional-order PID controller is used in the design of speed loop of PMSM speed control system. Having more parameters for tuning fractional order PID controller lead to good performance ratio to integer order. This good performance is shown by comparison fractional order PID controller with the conventional PI and tuned PID controller by Genetic algorithm in MATLAB soft wear.

  3. Mobility Apps

    E-Print Network [OSTI]

    Weissman, Dana; Villalobos, Monica

    2012-01-01

    third conference, “Sustainable Mobility & Cities: MarryingSUSTAINABLE CITIES CONFERENCE SERIES: URBAN HOUSING, ECONOMY, AND TRANSIT Mobility

  4. Issues in autonomous mobile sensor networks 

    E-Print Network [OSTI]

    Dharne, Avinash Gopal

    2009-05-15

    Autonomous mobile sensor networks consist of a number of autonomous mobile robots equipped with various sensors and tasked with a common mission. This thesis considers the topology control of such an ad hoc mobile sensor ...

  5. CONTROLLING ENERGY INTAKE IN THE PREPARTUM PERIOD TO IMPROVE TRANSITION COW HEALTH

    E-Print Network [OSTI]

    Farrell, Anthony P.

    CONTROLLING ENERGY INTAKE IN THE PREPARTUM PERIOD TO IMPROVE TRANSITION COW HEALTH by LORI ANN A common feeding practice during the dry period is to switch dairy cows to a low forage, energy dense diet 3 weeks prepartum, but this practice has been criticized as it may lead to the overconsumption

  6. Thermal Control Techniques for Improved DT Layering of Indirect Drive IFE Targets

    E-Print Network [OSTI]

    Pulsifer, John

    Thermal Control Techniques for Improved DT Layering of Indirect Drive IFE Targets J. E. Pulsifer,(1 is an essential step for any of the target designs under consideration for Inertial Fusion Energy (IFE), both of the target. Currently demonstrated layering methods require placement of bare capsules in a "layering sphere

  7. Cellulose bait improves the effectiveness of Metarhizium anisopliae as a microbial control of termites (Isoptera: Rhinotermitidae)

    E-Print Network [OSTI]

    Wang, Changlu

    Cellulose bait improves the effectiveness of Metarhizium anisopliae as a microbial control containers treated with M. anisopliae at the concentration of P 1.5 Â 107 conidia/cm3 . Cellulose powder bait/g, respectively, in choice tests in which termites were provided with treated cellulose bait and untreated wood. Ó

  8. Multileaf collimator performance monitoring and improvement using semiautomated quality control testing and statistical process control

    SciTech Connect (OSTI)

    Létourneau, Daniel McNiven, Andrea; Keller, Harald; Wang, An; Amin, Md Nurul; Pearce, Jim; Norrlinger, Bernhard; Jaffray, David A.

    2014-12-15

    Purpose: High-quality radiation therapy using highly conformal dose distributions and image-guided techniques requires optimum machine delivery performance. In this work, a monitoring system for multileaf collimator (MLC) performance, integrating semiautomated MLC quality control (QC) tests and statistical process control tools, was developed. The MLC performance monitoring system was used for almost a year on two commercially available MLC models. Control charts were used to establish MLC performance and assess test frequency required to achieve a given level of performance. MLC-related interlocks and servicing events were recorded during the monitoring period and were investigated as indicators of MLC performance variations. Methods: The QC test developed as part of the MLC performance monitoring system uses 2D megavoltage images (acquired using an electronic portal imaging device) of 23 fields to determine the location of the leaves with respect to the radiation isocenter. The precision of the MLC performance monitoring QC test and the MLC itself was assessed by detecting the MLC leaf positions on 127 megavoltage images of a static field. After initial calibration, the MLC performance monitoring QC test was performed 3–4 times/week over a period of 10–11 months to monitor positional accuracy of individual leaves for two different MLC models. Analysis of test results was performed using individuals control charts per leaf with control limits computed based on the measurements as well as two sets of specifications of ±0.5 and ±1 mm. Out-of-specification and out-of-control leaves were automatically flagged by the monitoring system and reviewed monthly by physicists. MLC-related interlocks reported by the linear accelerator and servicing events were recorded to help identify potential causes of nonrandom MLC leaf positioning variations. Results: The precision of the MLC performance monitoring QC test and the MLC itself was within ±0.22 mm for most MLC leaves and the majority of the apparent leaf motion was attributed to beam spot displacements between irradiations. The MLC QC test was performed 193 and 162 times over the monitoring period for the studied units and recalibration had to be repeated up to three times on one of these units. For both units, rate of MLC interlocks was moderately associated with MLC servicing events. The strongest association with the MLC performance was observed between the MLC servicing events and the total number of out-of-control leaves. The average elapsed time for which the number of out-of-specification or out-of-control leaves was within a given performance threshold was computed and used to assess adequacy of MLC test frequency. Conclusions: A MLC performance monitoring system has been developed and implemented to acquire high-quality QC data at high frequency. This is enabled by the relatively short acquisition time for the images and automatic image analysis. The monitoring system was also used to record and track the rate of MLC-related interlocks and servicing events. MLC performances for two commercially available MLC models have been assessed and the results support monthly test frequency for widely accepted ±1 mm specifications. Higher QC test frequency is however required to maintain tighter specification and in-control behavior.

  9. Near-term improvements for nuclear power plant control room annunciator systems. [PWR; BWR

    SciTech Connect (OSTI)

    Rankin, W.L.; Duvernoy, E.G.; Ames, K.R.; Morgenstern, M.H.; Eckenrode, R.J.

    1983-04-01

    This report sets forth a basic design philosophy with its associated functional criteria and design principles for present-day, hard-wired annunciator systems in the control rooms of nuclear power plants. It also presents a variety of annunciator design features that are either necessary for or useful to the implementation of the design philosophy. The information contained in this report is synthesized from an extensive literature review, from inspection and analysis of control room annunciator systems in the nuclear industry and in related industries, and from discussions with a variety of individuals who are knowledgeable about annunciator systems, nuclear plant control rooms, or both. This information should help licensees and license applicants in improving their hard-wired, control room annunciator systems as outlined by NUREG-0700.

  10. Ratio of effective temperature to pressure controls the mobility of sheared hard spheres

    E-Print Network [OSTI]

    Thomas K. Haxton

    2011-10-28

    Using molecular dynamics simulation, we calculate fluctuations and response for steadily sheared hard spheres over a wide range of packing fractions $\\phi$ and shear strain rates $\\gamma$, using two different methods to dissipate energy. To a good approximation, shear stress and density fluctuations are related to their associated response functions by a single effective temperature $T_{eff}$ that is equal to or larger than the kinetic temperature $T_{kin}$. We find a crossover in the relationship between the relaxation time $\\tau$ and the the nondimensionalized effective temperature $T_{eff}/p\\sigma^3$, where $p$ is the pressure and $\\sigma$ is the sphere diameter. In the solid response regime, the behavior at fixed packing fraction satisfies $\\tau\\gamma\\propto \\exp(-cp\\sigma^3/T_{eff})$, where $c$ depends weakly on $\\phi$, suggesting that the average local yield strain is controlled by the effective temperature in a way that is consistent with shear transformation zone theory. In the fluid response regime, the relaxation time depends on $T_{eff}/p\\sigma^3$ as it depends on $T_{kin}/p\\sigma^3$ in equilibrium. This regime includes both near-equilibrium conditions where $T_{eff} ~ T_{kin}$ and far-from-equilibrium conditions where $T_{eff} \

  11. SUPPLEMENTAL EXPORT COMPLIANCE PROCEDURES FOR TRAVEL WITH MOBILE DEVICES & RESEARCH EQUIPMENT To ensure that SAO-affiliated persons, who work on export-controlled projects and travel with their

    E-Print Network [OSTI]

    SUPPLEMENTAL EXPORT COMPLIANCE PROCEDURES FOR TRAVEL WITH MOBILE DEVICES & RESEARCH EQUIPMENT I. Purpose To ensure that SAO-affiliated persons, who work on export-controlled projects and travel with their laptops and mobile devices, take additional export compliance security precautions in advance and bring

  12. A Mobile Robot Project

    E-Print Network [OSTI]

    Brooks, Rodney A.

    We are building a mobile robot which will roam around the AI lab observing and later perhaps doing. Our approach to building the robot and its controlling software differs from that used in many other projects in a number ...

  13. GUIDELINES FOR IMPLEMENTATION OF AN ADVANCED OUTAGE CONTROL CENTER TO IMPROVE OUTAGE COORDINATION, PROBLEM RESOLUTION, AND OUTAGE RISK MANAGEMENT

    SciTech Connect (OSTI)

    Germain, Shawn St; Farris, Ronald; Whaley, April M; Medema, Heather; Gertman, David

    2014-09-01

    This research effort is a part of the Light-Water Reactor Sustainability (LWRS) Program, which is a research and development (R&D) program sponsored by Department of Energy (DOE) and performed in close collaboration with industry R&D programs that provide the technical foundations for licensing and managing the long-term, safe, and economical operation of current nuclear power plants. The LWRS program serves to help the U.S. nuclear industry adopt new technologies and engineering solutions that facilitate the continued safe operation of the plants and extension of the current operating licenses. Managing NPP outages is a complex and difficult task due to the large number of maintenance and repair activities that are accomplished in a short period of time. During an outage, the outage control center (OCC) is the temporary command center for outage managers and provides several critical functions for the successful execution of the outage schedule. Essentially, the OCC functions to facilitate information inflow, assist outage management in processing information, and to facilitate the dissemination of information to stakeholders. Currently, outage management activities primarily rely on telephone communication, face to face reports of status, and periodic briefings in the OCC. It is a difficult task to maintain current the information related to outage progress and discovered conditions. Several advanced communication and collaboration technologies have shown promise for facilitating the information flow into, across, and out of the OCC. The use of these technologies will allow information to be shared electronically, providing greater amounts of real-time information to the decision makers and allowing OCC coordinators to meet with supporting staff remotely. Passively monitoring status electronically through advances in the areas of mobile worker technologies, computer-based procedures, and automated work packages will reduce the current reliance on manually reporting progress. The use of these technologies will also improve the knowledge capture and management capabilities of the organization. The purpose of this research is to improve management of NPP outages through the development of an advanced outage control center (AOCC) that is specifically designed to maximize the usefulness of communication and collaboration technologies for outage coordination and problem resolution activities. This technical report for industry implementation outlines methods and considerations for the establishment of an AOCC. This report provides a process for implementation of a change management plan, evaluation of current outage processes, the selection of technology, and guidance for the implementation of the selected technology. Methods are presented for both adoption of technologies within an existing OCC and for a complete OCC replacement, including human factors considerations for OCC design and setup.

  14. Identification of Energy Efficiency Opportunities through Building Data Analysis and Achieving Energy Savings through Improved Controls

    SciTech Connect (OSTI)

    Katipamula, Srinivas; Taasevigen, Danny J.; Koran, Bill

    2014-09-04

    This chapter will highlight analysis techniques to identify energy efficiency opportunities to improve operations and controls. A free tool, Energy Charting and Metrics (ECAM), will be used to assist in the analysis of whole-building, sub-metered, and/or data from the building automation system (BAS). Appendix A describes the features of ECAM in more depth, and also provide instructions for downloading ECAM and all resources pertaining to using ECAM.

  15. AC System Equipment Specification, Installation and Operational Options for Improved Indoor Humidity Control 

    E-Print Network [OSTI]

    Shirey, D. B.

    2008-01-01

    Specification, Installation and Operational Options for Improved Indoor Humidity Control Don B. Shirey, III Program Manager Florida Solar Energy Center Cocoa, Florida ABSTRACT High-efficiency home designs have significantly reduced sensible...: Florida Solar Energy Center. James, P., J.E. Cummings, J. Sonne, R. Vieira, J. Klongerbo. 1997. The Effect of Residential Equipment Capacity on Energy Use, Demand, and Run-Time, FSEC-PF-328-97. Cocoa, FL: Florida Solar Energy Center. Lennox...

  16. A Study of the Energy Saving and Capacity Improvement Potential of Power Control in Multi-hop Wireless Networks

    E-Print Network [OSTI]

    Hwu, Wen-mei W.

    A Study of the Energy Saving and Capacity Improvement Potential of Power Control in Multi with respect to energy consumption and network capacity. We show that power control large- ly improves the network capacity and energy savings in all investigated scenarios, and that utilizing a greater number

  17. Development of an Advanced Simulator to Model Mobility Control and Geomechanics during CO{sub 2} Floods

    SciTech Connect (OSTI)

    Delshad, Mojdeh; Wheeler, Mary; Sepehrnoori, Kamy; Pope, Gary

    2013-12-31

    The simulator is an isothermal, three-dimensional, four-phase, compositional, equation-of– state (EOS) simulator. We have named the simulator UTDOE-CO2 capable of simulating various recovery processes (i.e., primary, secondary waterflooding, and miscible and immiscible gas flooding). We include both the Peng-Robinson EOS and the Redlich-Kwong EOS models. A Gibbs stability test is also included in the model to perform a phase identification test to consistently label each phase for subsequent property calculations such as relative permeability, viscosity, density, interfacial tension, and capillary pressure. Our time step strategy is based on an IMPEC-type method (implicit pressure and explicit concentration). The gridblock pressure is solved first using the explicit dating of saturation-dependent terms. Subsequently, the material balance equations are solved explicitly for the total concentration of each component. The physical dispersion term is also included in the governing equations. The simulator includes (1) several foam model(s) for gas mobility control, (2) compositional relative permeability models with the hysteresis option, (3) corner point grid and several efficient solvers, (4) geomechanics module to compute stress field as the result of CO{sub 2} injection/production, (5) the format of commercial visualization software, S3graf from Science-soft Ltd., was implemented for user friendly visualization of the simulation results. All tasks are completed and the simulator was fully tested and delivered to the DOE office including a user’s guide and several input files and the executable for Windows Pcs. We have published several SPE papers, presented several posters, and one MS thesis is completed (V. Pudugramam, 2013) resulting from this DOE funded project.

  18. Correlation ion mobility spectroscopy

    DOE Patents [OSTI]

    Pfeifer, Kent B. (Los Lunas, NM); Rohde, Steven B. (Corrales, NM)

    2008-08-26

    Correlation ion mobility spectrometry (CIMS) uses gating modulation and correlation signal processing to improve IMS instrument performance. Closely spaced ion peaks can be resolved by adding discriminating codes to the gate and matched filtering for the received ion current signal, thereby improving sensitivity and resolution of an ion mobility spectrometer. CIMS can be used to improve the signal-to-noise ratio even for transient chemical samples. CIMS is especially advantageous for small geometry IMS drift tubes that can otherwise have poor resolution due to their small size.

  19. Embedded Sensors and Controls to Improve Component Performance and Reliability Conceptual Design Report

    SciTech Connect (OSTI)

    Kisner, R.; Melin, A.; Burress, T.; Fugate, D.; Holcomb, D.; Wilgen, J.; Miller, J.; Wilson, D.; Silva, P.; Whitlow, L.; Peretz, F.

    2012-09-15

    The objective of this project is to demonstrate improved reliability and increased performance made possible by deeply embedding instrumentation and controls (I&C) in nuclear power plant (NPP) components and systems. The project is employing a highly instrumented canned rotor, magnetic bearing, fluoride salt pump as its I&C technology demonstration platform. I&C is intimately part of the basic millisecond-by-millisecond functioning of the system; treating I&C as an integral part of the system design is innovative and will allow significant improvement in capabilities and performance. As systems become more complex and greater performance is required, traditional I&C design techniques become inadequate and more advanced I&C needs to be applied. New I&C techniques enable optimal and reliable performance and tolerance of noise and uncertainties in the system rather than merely monitoring quasistable performance. Traditionally, I&C has been incorporated in NPP components after the design is nearly complete; adequate performance was obtained through over-design. By incorporating I&C at the beginning of the design phase, the control system can provide superior performance and reliability and enable designs that are otherwise impossible. This report describes the progress and status of the project and provides a conceptual design overview for the platform to demonstrate the performance and reliability improvements enabled by advanced embedded I&C.

  20. Indoor air quality control for improving passenger health in subway platforms using an outdoor air quality dependent ventilation system

    E-Print Network [OSTI]

    Indoor air quality control for improving passenger health in subway platforms using an outdoor air online 19 May 2015 Keywords: Ventilation control system Indoor air quality Indoor air pollution control Outdoor air quality Passenger health promotion Ventilation energy a b s t r a c t Indoor air quality (IAQ

  1. Improving the Control Performance of an Organic Rankine Cycle System for Waste Heat Recovery from a Heavy-Duty

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Improving the Control Performance of an Organic Rankine Cycle System for Waste Heat Recovery from waste heat from a heavy- duty diesel engine. For this system, a hierarchical and modular control) for recovering waste heat from a heavy-duty diesel engine. For this system, a hierarchical and modular control

  2. Improving Building Comfort and Energy Savings of the McKenzie Airport Terminal by Maintaining and Improving Pneumatic Control Systems 

    E-Print Network [OSTI]

    Liu, C.; Bruner, H. L.; Deng, S.; Brundidge, T.; Turner, W. D.; Claridge, D. E.

    2004-01-01

    , had some form of deteriorated controls, components, and operational function. For example, most of pneumatic controls were failed due to bad components, wrong settings, and disconnection before the Continuous CommissioningR (CCSM). This caused humid...

  3. Microbiological, Geochemical and Hydrologic Processes Controlling Uranium Mobility: An Integrated Field-Scale Subsurface Research Challenge Site at Rifle, Colorado, Quality Assurance Project Plan

    SciTech Connect (OSTI)

    Fix, N. J.

    2008-01-07

    The U.S. Department of Energy (DOE) is cleaning up and/or monitoring large, dilute plumes contaminated by metals, such as uranium and chromium, whose mobility and solubility change with redox status. Field-scale experiments with acetate as the electron donor have stimulated metal-reducing bacteria to effectively remove uranium [U(VI)] from groundwater at the Uranium Mill Tailings Site in Rifle, Colorado. The Pacific Northwest National Laboratory and a multidisciplinary team of national laboratory and academic collaborators has embarked on a research proposed for the Rifle site, the object of which is to gain a comprehensive and mechanistic understanding of the microbial factors and associated geochemistry controlling uranium mobility so that DOE can confidently remediate uranium plumes as well as support stewardship of uranium-contaminated sites. This Quality Assurance Project Plan provides the quality assurance requirements and processes that will be followed by the Rifle Integrated Field-Scale Subsurface Research Challenge Project.

  4. An improved, computer-based, on-line gamma monitor for plutonium anion exchange process control

    SciTech Connect (OSTI)

    Pope, N.G.; Marsh, S.F.

    1987-06-01

    An improved, low-cost, computer-based system has replaced a previously developed on-line gamma monitor. Both instruments continuously profile uranium, plutonium, and americium in the nitrate anion exchange process used to recover and purify plutonium at the Los Alamos Plutonium Facility. The latest system incorporates a personal computer that provides full-feature multichannel analyzer (MCA) capabilities by means of a single-slot, plug-in integrated circuit board. In addition to controlling all MCA functions, the computer program continuously corrects for gain shift and performs all other data processing functions. This Plutonium Recovery Operations Gamma Ray Energy Spectrometer System (PROGRESS) provides on-line process operational data essential for efficient operation. By identifying abnormal conditions in real time, it allows operators to take corrective actions promptly. The decision-making capability of the computer will be of increasing value as we implement automated process-control functions in the future. 4 refs., 6 figs.

  5. Field Test Results from Lidar Measured Yaw Control for Improved Yaw Alignment with the NREL Controls Advanced Research Turbine: Preprint

    SciTech Connect (OSTI)

    Scholbrock, A.; Fleming, P.; Wright, A.; Slinger, C.; Medley, J.; Harris, M.

    2014-12-01

    This paper describes field tests of a light detection and ranging (lidar) device placed forward looking on the nacelle of a wind turbine and used as a wind direction measurement to directly control the yaw position of a wind turbine. Conventionally, a wind turbine controls its yaw direction using a nacelle-mounted wind vane. If there is a bias in the measurement from the nacelle-mounted wind vane, a reduction in power production will be observed. This bias could be caused by a number of issues such as: poor calibration, electromagnetic interference, rotor wake, or other effects. With a lidar mounted on the nacelle, a measurement of the wind could be made upstream of the wind turbine where the wind is not being influenced by the rotor's wake or induction zone. Field tests were conducted with the lidar measured yaw system and the nacelle wind vane measured yaw system. Results show that a lidar can be used to effectively measure the yaw error of the wind turbine, and for this experiment, they also showed an improvement in power capture because of reduced yaw misalignment when compared to the nacelle wind vane measured yaw system.

  6. Design of a Network-based Mobile Gait Rehabilitation System Wenlong Zhang, Student Member, IEEE, Xiuming Zhu, Song Han, Student Member, IEEE,

    E-Print Network [OSTI]

    Chandy, John A.

    Design of a Network-based Mobile Gait Rehabilitation System Wenlong Zhang, Student Member, IEEE for improved mobility and tele- rehabilitation. In this system, an Internet-based body sensor network control of the gait rehabilitation device. A compact rotary elastic actuator (cRSEA) is used for providing

  7. Implementation and Testing of a Fault Detection Software Tool for Improving Control System Performance in a Large Commercial Building

    E-Print Network [OSTI]

    Implementation and Testing of a Fault Detection Software Tool for Improving Control System of faults by monitoring the level of these discrepancies. We present results from the first phase of tests

  8. Improving inventory and production control in an electronic company : capacity planning, base stock policy, and Kanban system

    E-Print Network [OSTI]

    Dong, Youqun, M. Eng. Massachusetts Institute of Technology.

    2009-01-01

    This research developed improved methods of inventory and production control in an electronic manufacturing company, which faces fluctuating seasonal demands and is categorized as a multiple part type production system ...

  9. INEXPENSIVE CO{sub 2} THICKENING AGENTS FOR IMPROVED MOBILITY CONTROL OF CO{sub 2} FLOODS

    SciTech Connect (OSTI)

    Robert M. Enick; Eric J. Beckman; Andrew Hamilton

    2004-10-01

    The objective of this research was the design, synthesis and evaluation of inexpensive, nonfluorous carbon dioxide thickening agents. We followed the same strategy employed in the design of fluorinated CO{sub 2} polymeric thickeners. First, a highly CO{sub 2}-philic, hydrocarbon-based monomer was to be identified. Polymers or oligomers of this monomer were then synthesized. The second step was to be completed only when a CO{sub 2}-soluble polymer that was soluble in CO{sub 2} at pressures comparable to the MMP was identified. In the second step, viscosity-enhancing associating groups were to be incorporated into the polymer to make it a viable thickener that exhibited high CO{sub 2} solubility at EOR MMP conditions. This final report documents the CO{sub 2} solubility of a series of commercial and novel polymers composed of carbon, hydrogen, oxygen and, in some cases, nitrogen.

  10. Energy-Saving Control of Single-Rod Hydraulic Cylinders with Programmable Valves and Improved Working Mode Selection

    E-Print Network [OSTI]

    Yao, Bin

    tremendous flexibility to control the cylinder motion while decreasing the energy usage by utilizingEnergy-Saving Control of Single-Rod Hydraulic Cylinders with Programmable Valves and Improved Working Mode Selection Song Liu Bin Yao School of Mechanical Engineering Purdue University West Lafayette

  11. Power Control MAC Protocol Analysis and Improvement for Ad Hoc Networks Ping Ding, JoAnne Holliday, Aslihan Celik

    E-Print Network [OSTI]

    Holliday, JoAnne

    Power Control MAC Protocol Analysis and Improvement for Ad Hoc Networks Ping Ding, JoAnne Holliday power control protocols have been proposed to address the limited power supplies in ad hoc networks. Recent protocols suggest varying the transmission power such that the RTS/CTS handshake is done

  12. Improvement of photovoltaic pumping systems based on standard frequency converters by means of programmable logic controllers

    SciTech Connect (OSTI)

    Fernandez-Ramos, Jose [Departamento de Electronica, Universidad de Malaga, Complejo Tecnologico de Teatinos (2.2.39), 29071 Malaga (Spain); Narvarte-Fernandez, Luis; Poza-Saura, Fernando [Instituto de Energia Solar, Universidad Politecnica de Madrid (IES-UPM), Avenida Complutense s/n (204), 28040 Madrid (Spain)

    2010-01-15

    Photovoltaic pumping systems (PVPS) based on standard frequency converters (SFCs) are currently experiencing a growing interest in pumping programmes implemented in remote areas because of their high performance in terms of component reliability, low cost, high power range and good availability of components virtually anywhere in the world. However, in practical applications there have appeared a number of problems related to the adaptation of the SFCs to the requirements of the photovoltaic pumping systems (PVPS). Another disadvantage of dedicated PVPS is the difficulty in implementing maximum power point tracking (MPPT). This paper shows that these problems can be solved through the addition of a basic industrial programmable logic controller (PLC) to the system. This PLC does not increase the cost and complexity of the system, but improves the adaptation of the SFC to the photovoltaic pumping system, and increases the overall performance of the system. (author)

  13. DISCHARGE IMPROVEMENT THROUGH CONTROL OF NEOCLASSICAL TEARING MODES BY LOCALIZED ECCD IN DIII-D

    SciTech Connect (OSTI)

    PRATER,R; LAHAYE,RJ; LOHR,J; LUCE,TC; PETTY,CC; FERRON,JR; HUMPHREYS,DA; STRAIT,EJ; PERKINS,FW; HARVEY,RW

    2002-10-01

    A271 DISCHARGE IMPROVEMENT THROUGH CONTROL OF NEOCLASSICAL TEARING MODES BY LOCALIZED ECCD IN DIII-D. Neoclassical tearing modes (NTMs) are MHD modes which can limit the performance of high beta discharges in tokamaks, in some cases leading to a major disruption. The destabilizing effect which results in NTM growth is a helical decrease in the bootstrap current caused by a local reduction of the plasma pressure gradient by seed magnetic islands. The NTM is particularly well suited to control since the mode is linearly stable although nonlinearly unstable, so if the island amplitude can be decreased below a threshold size the mode will decay and vanish. One means of shrinking the island is the replacement of the missing bootstrap current by a localized current generated by electron cyclotron current drive (ECCD). This method has been applied to the m=3/n=2 neoclassical tearing mode in DIII-D, in H-mode plasmas with ongoing ELMs and sawteeth, both of which generate seed islands periodically. In the case of the 3/2 mode, full suppression was obtained robustly by applying about 1.5 MW of ECCD very near the rational surface of the mode. When the mode first appears in the plasma the stored energy decreases by 20%, but after the mode is stabilized by the ECCD the beta may be raised above the initial threshold pressure by 20% by additional neutral beam heating, thereby generating an improvement in the limiting beta of nearly a factor 2. An innovative automated search algorithm was implemented to find and retain the optimum location for the ECCD in the presence of the mode.

  14. Mobile Computing/ Mobile Networks

    E-Print Network [OSTI]

    Yu, Chansu

    : The World Wide Web Consortium (W3C): sets specification for HTML and the web The Internet Engineering Task 802.11 / Bluetooth Capacity / Energy / Fairness / Directional System issues Embedded processor Low, the NSF turned control of the Internet to a consortium. #12;3 5 Who Controls the Internet? Not one person

  15. Improved control system of the thyristor flicker suppressor for the KEK 12-GeV PS

    SciTech Connect (OSTI)

    Matsumoto, S.; Baba, H.; Mikawa, K.; Sato, H.; Sueno, T.

    1983-08-01

    Thyristor control system of the 20 MVar flicker suppressor has been improved essentially. The previous feed forward (FF) loop with each single phase reactive current detector of the MR magnet power supply was exchanged to the present by both FF- and NFB-loops. The FF-loops consists of a three phase reactive power detector of the MPS and a forcing pattern generator on the fast but steady line voltage flicker, sag and surge. The NFB-loops control by the slow parts of the flicker and the unbalanced line voltages. These detectors of the reactive power, the voltage flicker and the unbalance have been developed. Sampled voltage flicker data with 12 bit ADC are processed by Z-80A micro computer system and the forcing pattern is generated by the system through 12 bit DAC into the loop. A typical voltage flicker including sag and surge has been reduced within + or - 1.5%, about 1/3 compared to the previous, at 66 kV primary line.

  16. Requirements for mobile photoware

    E-Print Network [OSTI]

    Ames, Morgan; Eckles, Dean; Naaman, Mor; Spasojevic, Mirjana; House, Nancy

    2010-01-01

    and makers of mobile devices, mobile imaging and sharingmedia captured with a mobile device and shared via Zonetagare beginning to use mobile devices. In this article, we use

  17. Abstract--A novel control scheme for improving the power efficiency of low-voltage DC-DC converters for battery-powered,

    E-Print Network [OSTI]

    Rincon-Mora, Gabriel A.

    -DC converters for battery-powered, portable applications is presented. In such applications, light- load efficiency is crucial for extending battery life, since mobile devices operate in stand-by mode for most-of-the-art techniques. As a result, the battery life in a typical DSP microprocessor application is improved by 7

  18. Embedded Sensors and Controls to Improve Component Performance and Reliability - System Dynamics Modeling and Control System Design

    SciTech Connect (OSTI)

    Melin, Alexander M.; Kisner, Roger A.; Fugate, David L.

    2013-10-01

    This report documents the current status of the modeling, control design, and embedded control research for the magnetic bearing canned rotor pump being used as a demonstration platform for deeply integrating instrumentation and controls (I{\\&}C) into nuclear power plant components. This pump is a highly inter-connected thermo/electro/mechanical system that requires an active control system to operate. Magnetic bearings are inherently unstable system and without active, moment by moment control, the rotor would contact fixed surfaces in the pump causing physical damage. This report details the modeling of the pump rotordynamics, fluid forces, electromagnetic properties of the protective cans, active magnetic bearings, power electronics, and interactions between different dynamical models. The system stability of the unforced and controlled rotor are investigated analytically. Additionally, controllers are designed using proportional derivative (PD) control, proportional integral derivative (PID) control, voltage control, and linear quadratic regulator (LQR) control. Finally, a design optimization problem that joins the electrical, mechanical, magnetic, and control system design into one problem to balance the opposing needs of various design criteria using the embedded system approach is presented.

  19. A new control strategy to improve the performance of PWM ac to dc converter under unbalanced operating condition 

    E-Print Network [OSTI]

    Choudhury, Shamim A.

    1992-01-01

    A NEW CONTROL STRATEGY TO IMPROVE THE PERFORMANCE OF PWM AC TO DC CONVERTER UNDER UNBALANCED OPERATING CONDITION A Thesis by SHAMIM A. CHOUDHURY Submitted to the Office of Graduate Studies of Texas ARM University in partial fulfillment... of the requirements for the degree of MASTER 0 F S CIE'VCE t&fay 1992 Major Subject: Electrical Engineering A NEW CONTROL STRATEGY TO IMPROVE THE PERFORMANCE OF PWM AC TO DC CONVERTER UNDER UNBALANCED OPERATING CONDITION A Thesis by SHAMIM A. CHOUDHURY...

  20. Evaluation of surfactants as steam diverters/mobility control agents in light oil steamfloods: Effect of oil composition, rates and experimental conditions

    SciTech Connect (OSTI)

    Mahmood, S.M.; Olsen, D.K.; Ramzel, E.B.

    1991-12-01

    A series of experiments was performed to evaluate the effectiveness of commercially available surfactants for steam-foam EOR applications in light oil reservoirs. The experiments were performed in a 3-ft long, 1-1/2 in.-diameter cylindrical sandpack of about 1 darcy permeability. The sandpack and injected fluids were preheated to 430{degree}F at 155 psi. The main objective of these tests was to investigate the effectiveness of several surfactants in providing mobility control under a variety of conditions expected in light-oil steamfloods. Thus, maximum pressure-rise and foam-bank buildup/decay were noted as operating conditions were changed in a test or in various tests. Tests were performed with various oil types, sacrificial salts, injection rates, injection strategies, vapor-to-liquid fractions (VLF), and steam/N{sub 2} ratios (SNR).

  1. An Innovative Pressure Sensor Glow Plug Offers Improved Diesel Engine Closed-loop Control

    Broader source: Energy.gov [DOE]

    Describes glow plug with integrated pressure sensor for closed-loop control of diesel engine combustion

  2. Sensor Fusion for Improved Control of Piezoelectric Tube Scanners Andrew J. Fleming Adrian Wills S. O. Reza Moheimani

    E-Print Network [OSTI]

    Fleming, Andrew J.

    lateral deflection of the tube tip. Piezoelectric tubes are used extensively in applications requiring1 Sensor Fusion for Improved Control of Piezoelectric Tube Scanners Andrew J. Fleming Adrian Wills is augmented with the high dynamic sensitivity of piezoelectric transducers. By combining the low- frequency

  3. Improving youth football in Scotland `I would like to have control over my life and do what I

    E-Print Network [OSTI]

    Millar, Andrew J.

    Improving youth football in Scotland `I would like to have control over my life and do what I want and informed picture of participation in youth football in Scotland. Thanks also to community sport and football clubs who assisted, and to the variety of people who willingly shared their experiences

  4. Mobile cinema

    E-Print Network [OSTI]

    Pan, Pengkai, 1972-

    2004-01-01

    This thesis develops techniques and methods that extend the art and craft of storytelling, and in particular enable the creation of mobile cinema. Stories are always constrained by the medium in which they are told and the ...

  5. Advanced control improves MHC-VGO unit operation. [Mild HydroCracking-Vacuum Gas Oil

    SciTech Connect (OSTI)

    Richard, L.; Watson, D. (Setpoint Inc., Houston, TX (United States)); Danzinger, F.; Tuppinger, D.; Schuster, R.; Wilmsen, W. (OMV AG, Schwechat (Germany))

    1995-03-01

    Constraint and multivariable predictive (MPC) controllers were implemented on an FCC preheater (MHC-VGO unit), which runs in mild hydrocracking (MHC) mode. In only a few weeks following commissioning, better control provided an average reduction in steam use of 38%, an average reduction of 22% in DEA use and a 5 to 10% reduction in fuel consumption. OMV's refinery in Schwechat was commissioned in 1960 and is now one of the largest and most complex inland-refineries in Europe with an annual crude oil processing capacity of 10 million metric tons. Every product stream is desulfurized by hydrodesulfurization (HDS) units. As part of a refinery-wide advanced control (ADVC) project which includes 27 units implemented on four process computers and two DCSs, advanced controls were installed on the MHC-VGO unit. The entire project was executed over a period of two and a half years. The paper describes the process, advanced control, the weighted average bed temperature controller, feed maximization control, stripper feed temperature control, stripping steam/feed ratio controller, stripper pressure minimization, H[sub 2]/oil controller, recycle/DEA ratio controller, stripper bottoms level controller, and advanced control benefits.

  6. Improved Engine Control Strategies Enabled by Digital Signal-Processing Method for Zirconia Exhaust Sensors

    Broader source: Energy.gov [DOE]

    A new approach for wideband O2 sensor control that treats a pump-cell sensor not as a feedback controlled system, but as the Ťanalog? front-end of a modified Delta-Sigma analog-to-Digital Converter

  7. Improved Adaptive-Reinforcement Learning Control for Morphing Unmanned Air Vehicles

    E-Print Network [OSTI]

    Valasek, John

    Composite Wing & Fuselage VLA Active Aero & Structures Low-Boom Supersonic Transport(s) Intelligent Personal electric motors · Integrated advanced control systems and information technology · Central "nervous system

  8. Dynamic control of Escherichia coli central metabolism for improvement of glucaric acid production

    E-Print Network [OSTI]

    Brockman, Irene Marie

    2015-01-01

    Metabolic engineering strategies have enabled improvements in yield and titer for a variety of valuable small molecules produced in microorganisms. Past approaches have been focused on up- and downregulation of genes to ...

  9. Improving liquid chemical intervention methods to control pathogens on fresh-cut fruits and vegetables 

    E-Print Network [OSTI]

    Troya, Maria Rosa

    2006-08-16

    effectiveness of liquid chemical treatment was studied. Experiments determined if sanitizer contact with bacteria could be improved through the use of surfactants and different application methods (drop application method, negative pressure differential...

  10. The association between vital signs and major hemorrhagic injury is significantly improved after controlling for sources

    E-Print Network [OSTI]

    The association between vital signs and major hemorrhagic injury is significantly improved after: Vital signs; Decision support systems; Clinical; Hemorrhage; Data interpretation; Statistical; Emergency care; Prehospital; Trauma Abstract Purpose: Measurement error and transient variability affect vital

  11. Time-Driven Early Discard (TED) to Improve the Fairness of TCP Congestion Control

    E-Print Network [OSTI]

    Baldi, Mario

    is their elastic nature as they can operate at a wide range of rates depending on availability of network resources throughput available from the network path. Since available bandwidth changes over time, TCP uses a window, respectively. It is widely accepted that flow control and congestion control mechanisms, albeit critical

  12. Towards improved 1-D settler modelling: impact on control strategies using the

    E-Print Network [OSTI]

    Bürger, Raimund

    model recommended for controller design and evaluation of control strategies Bürger-Diehl model A new 1-D SST model was developed by Bürger et al. (2011, 2013). Features ·Settling fl ux calculated. Manipulation in underflow rate (left) and MLSS concentration in the first activated sludge tank (right) under

  13. Survey of historical incidences with Controls-Structures Interaction and recommended technology improvements needed to put hardware in space

    SciTech Connect (OSTI)

    Ketner, G.L.

    1989-03-01

    Pacific Northwest Laboratory (PNL) conducted a survey for the Controls-Structures Interaction (CSI) Office of the National Aeronautics and Space Administration's (NASA) Langley Research Center. The purpose of the survey was to collect information documenting past incidences of problems with CSI during design, analysis, ground development, test and/or flight operation of space systems in industry. The survey was conducted to also compile recommended improvements in technology to support future needs for putting hardware into space. 3 refs., 1 tab.

  14. Nonlinear power flow feedback control for improved stability and performance of airfoil sections

    DOE Patents [OSTI]

    Wilson, David G.; Robinett, III, Rush D.

    2013-09-03

    A computer-implemented method of determining the pitch stability of an airfoil system, comprising using a computer to numerically integrate a differential equation of motion that includes terms describing PID controller action. In one model, the differential equation characterizes the time-dependent response of the airfoil's pitch angle, .alpha.. The computer model calculates limit-cycles of the model, which represent the stability boundaries of the airfoil system. Once the stability boundary is known, feedback control can be implemented, by using, for example, a PID controller to control a feedback actuator. The method allows the PID controller gain constants, K.sub.I, K.sub.p, and K.sub.d, to be optimized. This permits operation closer to the stability boundaries, while preventing the physical apparatus from unintentionally crossing the stability boundaries. Operating closer to the stability boundaries permits greater power efficiencies to be extracted from the airfoil system.

  15. Improving Quality-of-Control using Flexible Timing Constraints: Metric and Scheduling Issues

    E-Print Network [OSTI]

    Ramamritham, Krithi

    , Sweden gerhard.fohler@mdh.se Krithi Ramamritham Computer Science and Engineering Dept. IIT Mumbai, India theory, it is standard practice [1] that control activities are mapped into periodic tasks characterized

  16. Improving the control strategy for a four-switch buck-boost converter

    E-Print Network [OSTI]

    Whitaker, Michael Peter

    2007-01-01

    The four-switch buck-boost converter, such as implemented with the Linear Technology LTC3440 integrated circuit, is useful in many applications. While this topology can be highly efficient, new strategies for controlling ...

  17. Improving Building Control and System Operation Through the Continuous Commissioning® Process: A Case Study 

    E-Print Network [OSTI]

    Redmann, N.; Liu, M.

    2003-01-01

    , and Energy Management and Control System (EMCS) functionality. It also aided in the identification of mechanical systems needing repair. The optimization of the HVAC systems and advanced utilization of the EMCS reduced the combined heating and cooling energy...

  18. Controlled guidance of handwriting in Parkinson's Disease patients. Can a sonic aid improve tau guidance measures 

    E-Print Network [OSTI]

    Baxter, Holly

    2006-01-01

    Aim: To identify, using “tau theory” (Lee, 1998), i) if there are significant differences in tau guidance of handwriting between PD patients and normal healthy controls, and if so, ii) whether tau guidance for these ...

  19. IMPROVING CONTROL ROOM DESIGN AND OPERATIONS BASED ON HUMAN FACTORS ANALYSES OR HOW MUCH HUMAN FACTORS UPGRADE IS ENOUGH ?

    SciTech Connect (OSTI)

    HIGGINS,J.C.; OHARA,J.M.; ALMEIDA,P.

    2002-09-19

    THE JOSE CABRERA NUCLEAR POWER PLANT IS A ONE LOOP WESTINGHOUSE PRESSURIZED WATER REACTOR. IN THE CONTROL ROOM, THE DISPLAYS AND CONTROLS USED BY OPERATORS FOR THE EMERGENCY OPERATING PROCEDURES ARE DISTRIBUTED ON FRONT AND BACK PANELS. THIS CONFIGURATION CONTRIBUTED TO RISK IN THE PROBABILISTIC SAFETY ASSESSMENT WHERE IMPORTANT OPERATOR ACTIONS ARE REQUIRED. THIS STUDY WAS UNDERTAKEN TO EVALUATE THE IMPACT OF THE DESIGN ON CREW PERFORMANCE AND PLANT SAFETY AND TO DEVELOP DESIGN IMPROVEMENTS.FIVE POTENTIAL EFFECTS WERE IDENTIFIED. THEN NUREG-0711 [1], PROGRAMMATIC, HUMAN FACTORS, ANALYSES WERE CONDUCTED TO SYSTEMATICALLY EVALUATE THE CR-LA YOUT TO DETERMINE IF THERE WAS EVIDENCE OF THE POTENTIAL EFFECTS. THESE ANALYSES INCLUDED OPERATING EXPERIENCE REVIEW, PSA REVIEW, TASK ANALYSES, AND WALKTHROUGH SIMULATIONS. BASED ON THE RESULTS OF THESE ANALYSES, A VARIETY OF CONTROL ROOM MODIFICATIONS WERE IDENTIFIED. FROM THE ALTERNATIVES, A SELECTION WAS MADE THAT PROVIDED A REASONABLEBALANCE BE TWEEN PERFORMANCE, RISK AND ECONOMICS, AND MODIFICATIONS WERE MADE TO THE PLANT.

  20. Improving the Performance of a Two-Shell Column with Advanced Control 

    E-Print Network [OSTI]

    Morrison, T. A.; Laflamme, D.

    1991-01-01

    showed that they were unnecessary. The approach to flooding used in the constraint controllers is calculated using standard correlations but is adjusted by a fouling factor to account for polymer buildup on the trays over time. This fouling factor... that they were unnecessary. The approach to flooding 106 used in the constraint controllers is calculated using standard correlations but is adjusted by a fouling factor to account for polymer buildup on the trays over time. This fouling factor is calculated from...

  1. Initial Studies on Actionable Control for Improving Small Signal Stability in Interconnected Power Systems

    SciTech Connect (OSTI)

    Tuffner, Francis K.; Huang, Zhenyu; Zhou, Ning; Guttromson, Ross T.; Jayantilal, Avnaesh

    2010-06-14

    Power consumption and demand continues to grow around the world. As the electric power grid continues to be put under more stress, the conditions of instability are more likely to occur. One cause of such instabilities is intearea oscillations, such as the oscillation that resulted in the August 10, 1996 blackout of the WECC. This paper explores different potential operations of different devices on the power system to improve the damping of these interarea oscillations using two different simulation models

  2. A Coordinated Train Control Algorithm to Improve Regenerative Energy Receptivity in Metro Transit Systems

    E-Print Network [OSTI]

    Barkan, Christopher P.L.

    regenerative energy receptivity and energy savings in a bi-directional metro transit network, this paper formulates a coordinated train control algorithm based on genetic algorithm techniques. The energy saving is a braking mechanism that decelerates the vehicle by converting its kinetic energy into electric energy

  3. DAMPING IMPROVEMENT THROUGH TUNING CONTROLLER LIMITS OF A SERIES FACTS DEVICE

    E-Print Network [OSTI]

    Hiskens, Ian A.

    the capacities of existing power lines. In the last decade, the series flexible ac transmission systems (FACTS of the saturation limiter (with non-smooth nonlinearities) on system dynamics of a power network equipped for saturation limits. The external controller (EC) of a series flexible ac transmission system (FACTS) device

  4. Using System Pressure Control to Improve the Compressed Air System at Goulds Pumps 

    E-Print Network [OSTI]

    Caropolo, B.; Sember, P.; Glace, P.

    1998-01-01

    controller that will optimally schedule the set points of multiple compressor systems in response to demand for air in the plant has been undertaken at Goulds Pumps in Seneca Falls, New York. The project is cosponsored by the New York State Energy Research...

  5. Improving Control System Security through the Evaluation of Current Trends in Computer Security Research

    SciTech Connect (OSTI)

    Rolston

    2005-03-01

    At present, control system security efforts are primarily technical and reactive in nature. What has been overlooked is the need for proactive efforts, focused on the IT security research community from which new threats might emerge. Evaluating cutting edge IT security research and how it is evolving can provide defenders with valuable information regarding what new threats and tools they can anticipate in the future. Only known attack methodologies can be blocked, and there is a gap between what is known to the general security community and what is being done by cutting edge researchers --both those trying to protect systems and those trying to compromise them. The best security researchers communicate with others in their field; they know what cutting edge research is being done; what software can be penetrated via this research; and what new attack techniques and methodologies are being circulated in the black hat community. Standardization of control system applications, operating systems, and networking protocols is occurring at a rapid rate, following a path similar to the standardization of modern IT networks. Many attack methodologies used on IT systems can be ported over to the control system environment with little difficulty. It is extremely important to take advantage of the lag time between new research, its use on traditional IT networks, and the time it takes to port the research over for use on a control system network. Analyzing nascent trends in IT security and determining their applicability to control system networks provides significant information regarding defense mechanisms needed to secure critical infrastructure more effectively. This work provides the critical infrastructure community with a better understanding of how new attacks might be launched, what layers of defense will be needed to deter them, how the attacks could be detected, and how their impact could be limited.

  6. Defining new business models for the mobile device supply chain

    E-Print Network [OSTI]

    Xu, Ethan Y

    2012-01-01

    Mobile device companies typically manage supply and pricing for components that are used in production by their Vertical Integrators (VIs). By controlling the component pricing and supply chain, mobile device companies are ...

  7. Can Improving Working Memory Prevent Academic Difficulties? A School Based Randomised Controlled Trial

    E-Print Network [OSTI]

    Roberts, Gehan; Quach, Jon; Gold, Lisa; Anderson, Peter; Rickards, Field; Mensah, Fiona; Ainley, John; Gathercole, Susan; Wake, Melissa

    2011-06-20

    , stratified by school. Contamination will be unlikely, as control children are not identified to teachers nor can they access the training program. The randomisation will be conducted by a researcher inde- pendent of the research team. Allocation will be con... submission • Thorough peer review • No space constraints or color figure charges • Immediate publication on acceptance • Inclusion in PubMed, CAS, Scopus and Google Scholar • Research which is freely available for redistribution Submit your manuscript at www...

  8. A microprocessor-based control to improve the high speed performance of a permanent magnet brushless motor 

    E-Print Network [OSTI]

    Becerra, Roger Carlos

    1986-01-01

    -state performance variables, each simulation is allowed to proceed until all of transient modes sufficiently decay. Rotor speed is held constant throughout each simulation. 120 ase e . 7Raase !Weg. Phase 361etL. 90 O 30 200 360 520 680 Speed (rpg) 840... rare earth mag- nets and advanced motor design and manufacturing techniques have stimulated a surge of interest in the development and applications of PM brushless motors. The implementation of a method of converter control to improve the high speed...

  9. Brush Control and Range Improvement: In the Post Oak-Blackjack Oak Area of Texas. 

    E-Print Network [OSTI]

    Darrow, Robert A.; McCully, Wayne G.

    1959-01-01

    plant treatments with herbi. cides include basal trunk spray, stump spray, frill spray, trunk injection and soil injection. Oil solutions of 2,4,5-T ester are effective for all individual plant treatments. Water suspen- sions of monuron or fenuron... plant or broadcast treat- merits for control sf .woody plants. Rasnl Trunk Spray Rasal spray applications of oil solutions contain- ing 2,4,5-T ester or water suspensions of monuron polvtler are recommended for co~itrol of post and blackjack oaks...

  10. Mobile Facility

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfateSciTechtail.Theory ofDid you notHeatMaRIEdioxide capture |GE PutsgovSitesMobile Facility AMF

  11. Mobile Resources

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home Room NewsInformationJessework uses concrete7 AssessmentBusinessAlternative Fueling StationMobile

  12. Abstract --We describe the core components of a mobile RFID system, and they include components such as mobile

    E-Print Network [OSTI]

    California at Los Angeles, University of

    there are several kinds of mobile RFID readers in the market, we will propose specially designed mobile RFID scenario, and, code resolution mechanism. We will analyze the characteristics of the proposed technologies are designed in the WIPI C API: They are reader control, tag control, buffer control and filter control

  13. Method of controlling the side wall thickness of a turbine nozzle segment for improved cooling

    DOE Patents [OSTI]

    Burdgick, Steven Sebastian (Schenectady, NY)

    2002-01-01

    A gas turbine nozzle segment has outer and inner bands and a vane extending therebetween. Each band has a side wall, a cover and an impingement plate between the cover and nozzle wall defining two cavities on opposite sides of the impingement plate. Cooling steam is supplied to one cavity for flow through apertures of the impingement plate to cool the nozzle wall. The side wall of the band has an inturned flange defining with the nozzle wall an undercut region. The outer surface of the side wall is provided with a step prior to welding the cover to the side wall. A thermal barrier coating is applied in the step and, after the cover is welded to the side wall, the side wall is finally machined to a controlled thickness removing all, some or none of the coating.

  14. Economic and Conservation Evaluation of Capital Renovation Projects: Maverick County Water Control and Improvement District No. 1 (Eagle Pass) – Lining Main Canal – Preliminary 

    E-Print Network [OSTI]

    Rister, M. Edward; Lacewell, Ronald D.; Sturdivant, Allen W.; Robinson, John R.C.; Popp, Michael C.

    2004-01-01

    Evaluation of Capital Renovation Projects: Maverick County Water Control and Improvement District No. 1 (Eagle Pass) – Lining Main Canal – Preliminary M. Edward Rister Ronald D. Lacewell Allen W. Sturdivant John R. C. Robinson Michael C. Popp Texas Water... stakeholders and the public. This is anticipated to occur sometime in mid 2004. TR-248 January 2004 Economic and Conservation Evaluation of Capital Renovation Projects: Maverick County Water Control and Improvement District No. 1 (Eagle Pass) – Lining Main...

  15. Economic and Conservation Evaluation of Capital Renovation Projects: Maverick County Water Control and Improvement District No. 1 (Eagle Pass) – Lining Main Canal – Final 

    E-Print Network [OSTI]

    Rister, M. Edward; Lacewell, Ronald D.; Sturdivant, Allen W.; Robinson, John R.C.; Popp, Michael C.

    2004-01-01

    Evaluation of Capital Renovation Projects: Maverick County Water Control and Improvement District No. 1 (Eagle Pass) – Lining Main Canal – Final M. Edward Rister Ronald D. Lacewell Allen W. Sturdivant John R. C. Robinson Michael C. Popp Texas Water Resources... April 2004 Economic and Conservation Evaluation of Capital Renovation Projects: Maverick County Water Control and Improvement District No. 1 (Eagle Pass) – Lining Main Canal – Final M. Edward Rister Ronald D. Lacewell Allen W. Sturdivant John R. C...

  16. Controlled mobility in sensor networks

    E-Print Network [OSTI]

    Sugihara, Ryo

    2009-01-01

    Example: Structural Health Monitoring 2.2.2 Systems andworkshop on Structural Health Monitoring, 2007. [TPS + 05]target tracking, structural health monitoring, and so on.

  17. Controlled mobility in sensor networks

    E-Print Network [OSTI]

    Sugihara, Ryo

    2009-01-01

    between node energy consumption and data delivery latency.o? between energy consumption and data delivery latency. We7.4: Data delivery latency for varying energy consumption

  18. Controlled mobility in sensor networks

    E-Print Network [OSTI]

    Sugihara, Ryo

    2009-01-01

    interrogation with unmanned aerial vehicles. In Proceedings05] and a UAV (unmanned aerial vehicle) in structural health

  19. Understanding Mobile Social Behaviour Using Smartphones

    E-Print Network [OSTI]

    Henderson, Tristan

    with Facebook's privacy controls1, or Google Buzz.2 Studying users' behaviour is paramount for understanding, when the mobile social application is actually used. We share our experi- ences in using a mobile phone for asking questions of participants 1http://mashable.com/2010/05/23/facebook-ceo-mistakes/ 2http

  20. Cooperating mobile robots

    DOE Patents [OSTI]

    Harrington, John J.; Eskridge, Steven E.; Hurtado, John E.; Byrne, Raymond H.

    2004-02-03

    A miniature mobile robot provides a relatively inexpensive mobile robot. A mobile robot for searching an area provides a way for multiple mobile robots in cooperating teams. A robotic system with a team of mobile robots communicating information among each other provides a way to locate a source in cooperation. A mobile robot with a sensor, a communication system, and a processor, provides a way to execute a strategy for searching an area.

  1. Energy Aware Distributed Speech Recognition for Wireless Mobile Devices

    E-Print Network [OSTI]

    Simunic, Tajana

    and contact management applications, navigation, and command and control. Mobile devices are limited1 Energy Aware Distributed Speech Recognition for Wireless Mobile Devices Brian Delaney, Tajana Simunic, Nikil Jayant Abstract-- The use of a voice-user interface for mobile wireless devices has been

  2. An Experimental Comparison of Physical Mobile Interaction Techniques

    E-Print Network [OSTI]

    work has shown that mobile devices can act as universal remote controls for interaction with smart as selection techniques in smart environments. 1 Introduction Mobile devices have become pervasive; most people they are mostly used for interaction between a user, mobile device and a service. In such situations the context

  3. Development of Methodologies for Technology Deployment for Advanced Outage Control Centers that Improve Outage Coordination, Problem Resolution and Outage Risk Management

    SciTech Connect (OSTI)

    Shawn St. Germain; Ronald Farris; Heather Medeman

    2013-09-01

    This research effort is a part of the Light-Water Reactor Sustainability (LWRS) Program, which is a research and development (R&D) program sponsored by Department of Energy (DOE) and performed in close collaboration with industry R&D programs that provides the technical foundations for licensing and managing the long-term, safe, and economical operation of current nuclear power plants. The LWRS program serves to help the U.S. nuclear industry adopt new technologies and engineering solutions that facilitate the continued safe operation of the plants and extension of the current operating licenses. The long term viability of existing nuclear power plants in the U.S. will depend upon maintaining high capacity factors, avoiding nuclear safety issues and reducing operating costs. The slow progress in the construction on new nuclear power plants has placed in increased importance on maintaining the output of the current fleet of nuclear power plants. Recently expanded natural gas production has placed increased economic pressure on nuclear power plants due to lower cost competition. Until recently, power uprate projects had steadily increased the total output of the U.S. nuclear fleet. Errors made during power plant upgrade projects have now removed three nuclear power plants from the U.S. fleet and economic considerations have caused the permanent shutdown of a fourth plant. Additionally, several utilities have cancelled power uprate projects citing economic concerns. For the past several years net electrical generation from U.S. nuclear power plants has been declining. One of few remaining areas where significant improvements in plant capacity factors can be made is in minimizing the duration of refueling outages. Managing nuclear power plant outages is a complex and difficult task. Due to the large number of complex tasks and the uncertainty that accompanies them, outage durations routinely exceed the planned duration. The ability to complete an outage on or near schedule depends upon the performance of the outage management organization. During an outage, the outage control center (OCC) is the temporary command center for outage managers and provides several critical functions for the successful execution of the outage schedule. Essentially, the OCC functions to facilitate information inflow, assist outage management in processing information and to facilitate the dissemination of information to stakeholders. Currently, outage management activities primarily rely on telephone communication, face to face reports of status and periodic briefings in the OCC. Much of the information displayed in OCCs is static and out of date requiring an evaluation to determine if it is still valid. Several advanced communication and collaboration technologies have shown promise for facilitating the information flow into, across and out of the OCC. Additionally, advances in the areas of mobile worker technologies, computer based procedures and electronic work packages can be leveraged to improve the availability of real time status to outage managers.

  4. New process modeling [sic], design, and control strategies for energy efficiency, high product quality, and improved productivity in the process industries. Final project report

    SciTech Connect (OSTI)

    Ray, W. Harmon

    2002-06-05

    This project was concerned with the development of process design and control strategies for improving energy efficiency, product quality, and productivity in the process industries. In particular, (i) the resilient design and control of chemical reactors, and (ii) the operation of complex processing systems, was investigated. Specific topics studied included new process modeling procedures, nonlinear controller designs, and control strategies for multiunit integrated processes. Both fundamental and immediately applicable results were obtained. The new design and operation results from this project were incorporated into computer-aided design software and disseminated to industry. The principles and design procedures have found their way into industrial practice.

  5. Surfactant-Polymer Interaction for Improved Oil Recovery

    SciTech Connect (OSTI)

    Gabitto, Jorge; Mohanty, Kishore K.

    2002-01-07

    The goal of this research was to use the interaction between a surfactant and a polymer for efficient displacement of tertiary oil by improving slug integrity, oil solubility in the displacing fluid and mobility control. Surfactant-polymer flooding has been shown to be highly effective in laboratory-scale linear floods. The focus of this proposal is to design an inexpensive surfactant-polymer mixture that can efficiently recover tertiary oil by avoiding surfactant slug degradation and viscous/heterogeneity fingering.

  6. Location Management for Mobile Devices

    E-Print Network [OSTI]

    Wilde, Erik

    2008-01-01

    general, and wireless and mobile devices in particular. Thelocation-enabled mobile devices and location-based services.information from mobile devices and making it available to

  7. Ion mobility sensor system

    SciTech Connect (OSTI)

    Xu, Jun; Watson, David B.; Whitten, William B.

    2013-01-22

    An ion mobility sensor system including an ion mobility spectrometer and a differential mobility spectrometer coupled to the ion mobility spectrometer. The ion mobility spectrometer has a first chamber having first end and a second end extending along a first direction, and a first electrode system that generates a constant electric field parallel to the first direction. The differential mobility spectrometer includes a second chamber having a third end and a fourth end configured such that a fluid may flow in a second direction from the third end to the fourth end, and a second electrode system that generates an asymmetric electric field within an interior of the second chamber. Additionally, the ion mobility spectrometer and the differential mobility spectrometer form an interface region. Also, the first end and the third end are positioned facing one another so that the constant electric field enters the third end and overlaps the fluid flowing in the second direction.

  8. Mobile Proactive secret sharing

    E-Print Network [OSTI]

    Schultz, David Andrew

    2007-01-01

    This thesis describes mobile proactive secret sharing (MPSS), an extension of proactive secret sharing. Mobile proactive secret sharing is much more flexible than proactive secret sharing in terms of group membership: ...

  9. Keeping Mobile Robots Connected

    E-Print Network [OSTI]

    Lynch, Nancy

    2009-06-17

    Designing robust algorithms for mobile agents with reliable communication is difficult due to the distributed nature of computation, in mobile ad hoc networks (MANETs) the matter is exacerbated by the need to ensure ...

  10. Mobilized ad-hoc networks: A reinforcement learning approach

    E-Print Network [OSTI]

    Chang, Yu-Han

    2003-12-04

    Research in mobile ad-hoc networks has focused on situations in which nodes have no control over their movements. We investigate an important but overlooked domain in which nodes do have control over their movements. ...

  11. Biochemical Control With Radiotherapy Improves Overall Survival in Intermediate and High-Risk Prostate Cancer Patients Who Have an Estimated 10-Year Overall Survival of >90%

    SciTech Connect (OSTI)

    Herbert, Christopher; Liu, Mitchell; Tyldesley, Scott; Morris, W. James; Joffres, Michel; Khaira, Mandip; Kwan, Winkle; Moiseenko, Vitali; Pickles, Thomas

    2012-05-01

    Purpose: To identify subgroups of patients with carcinoma of the prostate treated with radical radiotherapy that have improved overall survival when disease is biochemically controlled. Methods and Materials: A cohort of 1,060 prostate cancer patients treated with radical radiotherapy was divided into nine subgroups based on National Comprehensive Cancer Network risk category and estimated 10-year overall survival (eOS 10y) derived from the age adjusted Charlson Comorbidity Index. Patients with and without biochemical control were compared with respect to overall survival. Actuarial estimates of overall survival were calculated using the Kaplan-Meier method. Univariate and multivariate Cox proportional hazards models were used for analysis of overall survival. Results: Median follow-up was 125 months (range, 51-176 months). Only the subgroups with high or intermediate risk disease and an eOS 10y of >90% had a statistically significantly improved overall survival when prostate cancer was biochemically controlled. In all other groups, biochemical control made no significant difference to overall survival. In the subgroup with high-risk disease and eOS 10y >90%, actuarial overall survival was 86.3% (95% confidence interval [CI] 78.5%-94.1%) and 62.1% (95% CI 52.9%-71.3%) for patients with biochemical control and biochemical relapse respectively (p = 0.002). In the intermediate risk group with eOS >90%, actuarial overall survival was 95.3% (95% CI 89.0%-100%) and 79.8% (95% CI 68.0%-91.6%) for biochemically controlled and biochemically relapsed patients (p = 0.033). On multivariate analysis, National Comprehensive Cancer Network risk group (p = 0.005), biochemical control (p = 0.033) and eOS 10y (p < 0.001) were statistically significant. Conclusion: Biochemical control translates into improved overall survival in patients with high or intermediate risk disease and an estimated 10-year overall survival of >90%.

  12. Mobile Technology Management

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    2014-05-15

    The order establishes requirements, assigns responsibilities, and provides guidance for federal mobile technology management and employee use of both government furnished and personally-owned mobile devices within DOE and NNSA. Establishes requirements for use of User Agreements to govern mobile devices used for official duties. Does not cancel other directives.

  13. Abstract--Evolving a robot's sensor morphology along with its control program has the potential to significantly improve

    E-Print Network [OSTI]

    Parker, Gary B.

    system where the angle, range, and type of sensors on a hexapod robot, along with the control program on the actual hexapod robot. I. INTRODUCTION OTH the control program and the morphology of a robot are important

  14. Towards Mobile Microrobot Swarms for Additive Micromanufacturing

    E-Print Network [OSTI]

    Zavlanos, Michael

    of independently controlled microrobots in advanced, additive manufacturing applications. Keywords Mobile Microrobotics, Multi-robot Control, Additive Manufacturing 1. Introduction Flexible manufacturing capabilities, and additive manufacturing has proven to be a disruptive technology at the small- to medium-scale. Many

  15. An Architecture for Multi-Sensor Fusion in Mobile Environments Datong Chen, Albrecht Schmidt, Hans-Werner Gellersen

    E-Print Network [OSTI]

    Chen, Datong

    for multi-sensor fusion, applied for environment awareness of personal mobile devices. The working environment of personal mobile devices changes dynamically depending on their user's activities. Equipped with sensors, mobile devices can obtain an awareness of their mobile working environment, to improve

  16. Mobile worksystems for decontamination and decommissioning operations. Final report

    SciTech Connect (OSTI)

    1997-02-01

    This project is an interdisciplinary effort to develop effective mobile worksystems for decontamination and decommissioning (D&D) of facilities within the DOE Nuclear Weapons Complex. These mobile worksystems will be configured to operate within the environmental and logistical constraints of such facilities and to perform a number of work tasks. Our program is designed to produce a mobile worksystem with capabilities and features that are matched to the particular needs of D&D work by evolving the design through a series of technological developments, performance tests and evaluations. The Phase I effort was based on a robot called the Remote Work Vehicle (RWV) that was previously developed by CMU for use in D&D operations at the Three Mile Island Unit 2 Reactor Building basement. During Phase I of this program, the RWV was rehabilitated and upgraded with contemporary control and user interface technologies and used as a testbed for remote D&D operations. We established a close working relationship with the DOE Robotics Technology Development Program (RTDP). In the second phase, we designed and developed a next generation mobile worksystem, called Rosie, and a semi-automatic task space scene analysis system, called Artisan, using guidance from RTDP. Both systems are designed to work with and complement other RTDP D&D technologies to execute selective equipment removal scenarios in which some part of an apparatus is extricated while minimally disturbing the surrounding objects. RTDP has identified selective equipment removal as a timely D&D mission, one that is particularly relevant during the de-activation and de-inventory stages of facility transitioning as a means to reduce the costs and risks associated with subsequent surveillance and monitoring. In the third phase, we tested and demonstrated core capabilities of Rosie and Artisan; we also implemented modifications and enhancements that improve their relevance to DOE`s facility transitioning mission.

  17. Efficient Context-sensitive Word Completion for Mobile Devices

    E-Print Network [OSTI]

    Tilburg, Universiteit van

    savings, a measurable correlate of text entry effort gain, typically improve when the al- gorithm wouldEfficient Context-sensitive Word Completion for Mobile Devices Antal van den Bosch Tilburg Centre- volved in text entry on mobile devices and in augmentative com- munication devices, where efficiency

  18. Distributed Mobility Management for Target Tracking in Mobile Sensor Networks

    E-Print Network [OSTI]

    Chakrabarty, Krishnendu

    --Wireless mobile sensor networks, mobility management, target tracking, Bayesian, distributed system. Ç 1 of scarce resources, such as energy and network bandwidth. Furthermore, the mobility management schemeDistributed Mobility Management for Target Tracking in Mobile Sensor Networks Yi Zou, Member, IEEE

  19. Highly parallelized control programming methodologies using multicore CPU and FPGA for highly dynamic multi-DoF mobile robots, applied to the MIT Cheetah

    E-Print Network [OSTI]

    Seok, Sangok

    2014-01-01

    This thesis presents highly parallelized control programming methodologies developed for multi-degrees of freedom (DoF) robots capable of highly dynamic movements. In robotic applications that require rapid physical ...

  20. Robotic vehicle with multiple tracked mobility platforms

    DOE Patents [OSTI]

    Salton, Jonathan R. (Albuquerque, NM); Buttz, James H. (Albuquerque, NM); Garretson, Justin (Albuquerque, NM); Hayward, David R. (Wetmore, CO); Hobart, Clinton G. (Albuquerque, NM); Deuel, Jr., Jamieson K. (Albuquerque, NM)

    2012-07-24

    A robotic vehicle having two or more tracked mobility platforms that are mechanically linked together with a two-dimensional coupling, thereby forming a composite vehicle of increased mobility. The robotic vehicle is operative in hazardous environments and can be capable of semi-submersible operation. The robotic vehicle is capable of remote controlled operation via radio frequency and/or fiber optic communication link to a remote operator control unit. The tracks have a plurality of track-edge scallop cut-outs that allow the tracks to easily grab onto and roll across railroad tracks, especially when crossing the railroad tracks at an oblique angle.

  1. ARM Mobile Facilities

    SciTech Connect (OSTI)

    Orr, Brad; Coulter, Rich

    2010-12-13

    This video provides an overview of the ARM Mobile Facilities, two portable climate laboratories that can deploy anywhere in the world for campaigns of at least six months.

  2. Mobile Technology Management

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    2013-11-21

    The directive will ensure that federal organizations and employees within the Department can use mobile technology to support mission requirements in a safe and secure manner.

  3. ARM Mobile Facilities

    ScienceCinema (OSTI)

    Orr, Brad; Coulter, Rich

    2014-09-15

    This video provides an overview of the ARM Mobile Facilities, two portable climate laboratories that can deploy anywhere in the world for campaigns of at least six months.

  4. Adaptive sampling and forecasting with mobile sensor networks

    E-Print Network [OSTI]

    Choi, Han-Lim

    2009-01-01

    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 ...

  5. ExxonMobil Global Energy Management System 

    E-Print Network [OSTI]

    Roberto, F.

    2009-01-01

    For many years, ExxonMobil has undertaken voluntary actions to improve efficiency in our operations and in customer use of our products. Our Global Energy Management System (GEMS) is an important initiative that is having a positive impact at each...

  6. THE CHALLENGES OF MOBILE COMPUTING IN EDUCATION: A SURVEY OF THE PRIMARY ISSUES

    E-Print Network [OSTI]

    and envisioning possible functionalities to improve students' experience. Keywords: mobile devices, learners is becoming a certainty. A mobile device may not be appropriate for all kinds of information manipulation and this paper discusses the suitability of mobile devices within education. This research focuses on creating

  7. Implementation and testing of a fault detection software tool for improving control system performance in a large commercial building

    E-Print Network [OSTI]

    Salsbury, T.I.

    2011-01-01

    of the chillers • Valve leakage in the heating coil •due to a large leakage through the valve. The second alarme.g. , leakage through a control valve. A prolonged setpoint

  8. Implementation and testing of a fault detection software tool for improving control system performance in a large commercial building

    E-Print Network [OSTI]

    Salsbury, T.I.

    2011-01-01

    a stand-alone software program for testing with the testImplementation and Testing of a Fault Detection Softwareopens the way for testing the control software on any other

  9. Reducing cold start hydrocarbon emissions from port fuel injected spark ignition engines with improved management of hardware & controls

    E-Print Network [OSTI]

    Lang, Kevin R., 1980-

    2006-01-01

    An experimental study was performed to investigate strategies for reducing cold start hydrocarbon (HC) emissions from port fuel injected (PFI) spark ignition (SI) engines with better use of existing hardware and control ...

  10. Atmospheric process evaluation of mobile source emissions

    SciTech Connect (OSTI)

    1995-07-01

    During the past two decades there has been a considerable effort in the US to develop and introduce an alternative to the use of gasoline and conventional diesel fuel for transportation. The primary motives for this effort have been twofold: energy security and improvement in air quality, most notably ozone, or smog. The anticipated improvement in air quality is associated with a decrease in the atmospheric reactivity, and sometimes a decrease in the mass emission rate, of the organic gas and NO{sub x} emissions from alternative fuels when compared to conventional transportation fuels. Quantification of these air quality impacts is a prerequisite to decisions on adopting alternative fuels. The purpose of this report is to present a critical review of the procedures and data base used to assess the impact on ambient air quality of mobile source emissions from alternative and conventional transportation fuels and to make recommendations as to how this process can be improved. Alternative transportation fuels are defined as methanol, ethanol, CNG, LPG, and reformulated gasoline. Most of the discussion centers on light-duty AFVs operating on these fuels. Other advanced transportation technologies and fuels such as hydrogen, electric vehicles, and fuel cells, will not be discussed. However, the issues raised herein can also be applied to these technologies and other classes of vehicles, such as heavy-duty diesels (HDDs). An evaluation of the overall impact of AFVs on society requires consideration of a number of complex issues. It involves the development of new vehicle technology associated with engines, fuel systems, and emission control technology; the implementation of the necessary fuel infrastructure; and an appropriate understanding of the economic, health, safety, and environmental impacts associated with the use of these fuels. This report addresses the steps necessary to properly evaluate the impact of AFVs on ozone air quality.

  11. Reducing Information Gathering Latency through Mobile Aerial Sensor Network

    E-Print Network [OSTI]

    Lau, Francis C.M.

    for information gathering through a Mobile Aerial Sensor Network (MASN). We adopt the Hive-Drone model [5] where (Drones) is strategically placed in the sensing field. We then face the challenges of how to control a Mobile Aerial Sensor Network (MASN) based on the Hive- Drone model [5]. MASN comprises a swarm of Micro

  12. CDC will Test Trailers and Mobile Homes for Formaldehyde

    E-Print Network [OSTI]

    CDC will Test Trailers and Mobile Homes for Formaldehyde At FEMA's request, the Centers for Disease Control and Prevention (CDC) will do tests for formaldehyde in a total of 500 trailers and mobile homes about the amount of formaldehyde in them. What is CDC trying to find out from these tests? CDC

  13. Benefits of Using Mobile Transformers and Mobile Substations...

    Office of Environmental Management (EM)

    Using Mobile Transformers and Mobile Substations for Rapidly Restoring Electrical Service: a Report to the United States Congress Pursuant to Section 1816 of the Energy Policy Act...

  14. Enhancing mobile browsing and reading

    E-Print Network [OSTI]

    Yu, Chen-Hsiang

    Although the web browser has become a standard interface for information access on the Web, the mobile web browser on the smartphone does not hold the same interest to mobile users. A survey with 11 mobile users shows that ...

  15. Mobile Malware Propagation and Defense

    E-Print Network [OSTI]

    Zyba, Gjergji

    Privacy in Smartphones and Mobile Devices (SPSM), pages 3–directly by the mobile devices, and that this difference isMcA] McAfee. Securing Mobile Devices: Present and Future.

  16. Mobility in Wireless Sensor Networks

    E-Print Network [OSTI]

    Mehta, Ankur Mukesh

    2012-01-01

    rate communication in an empirical WSN installation . Motecommunication for mobile MANET- WSN scenarios”. In: IEEEof Nodes in Mobile WSN”. In: IEEE Inter- national Conference

  17. Energy Efficiency Improvement by Measurement and Control: A Case Study of Reheating Furnaces in the Steel Industry 

    E-Print Network [OSTI]

    Martensson, A.

    1992-01-01

    is on energy use in steel reheating furnaces for rolling mills. The demands on the reheating process and the operational conditions that are essential for its control are described. An analysis is made of possible reductions in energy use as a result...

  18. Mobile autonomous robotic apparatus for radiologic characterization

    DOE Patents [OSTI]

    Dudar, A.M.; Ward, C.R.; Jones, J.D.; Mallet, W.R.; Harpring, L.J.; Collins, M.X.; Anderson, E.K.

    1999-08-10

    A mobile robotic system is described that conducts radiological surveys to map alpha, beta, and gamma radiation on surfaces in relatively level open areas or areas containing obstacles such as stored containers or hallways, equipment, walls and support columns. The invention incorporates improved radiation monitoring methods using multiple scintillation detectors, the use of laser scanners for maneuvering in open areas, ultrasound pulse generators and receptors for collision avoidance in limited space areas or hallways, methods to trigger visible alarms when radiation is detected, and methods to transmit location data for real-time reporting and mapping of radiation locations on computer monitors at a host station. A multitude of high performance scintillation detectors detect radiation while the on-board system controls the direction and speed of the robot due to pre-programmed paths. The operators may revise the preselected movements of the robotic system by ethernet communications to remonitor areas of radiation or to avoid walls, columns, equipment, or containers. The robotic system is capable of floor survey speeds of from 1/2-inch per second up to about 30 inches per second, while the on-board processor collects, stores, and transmits information for real-time mapping of radiation intensity and the locations of the radiation for real-time display on computer monitors at a central command console. 4 figs.

  19. Mobile autonomous robotic apparatus for radiologic characterization

    DOE Patents [OSTI]

    Dudar, Aed M. (Dearborn, MI); Ward, Clyde R. (Aiken, SC); Jones, Joel D. (Aiken, SC); Mallet, William R. (Cowichan Bay, CA); Harpring, Larry J. (North Augusta, SC); Collins, Montenius X. (Blackville, SC); Anderson, Erin K. (Pleasanton, CA)

    1999-01-01

    A mobile robotic system that conducts radiological surveys to map alpha, beta, and gamma radiation on surfaces in relatively level open areas or areas containing obstacles such as stored containers or hallways, equipment, walls and support columns. The invention incorporates improved radiation monitoring methods using multiple scintillation detectors, the use of laser scanners for maneuvering in open areas, ultrasound pulse generators and receptors for collision avoidance in limited space areas or hallways, methods to trigger visible alarms when radiation is detected, and methods to transmit location data for real-time reporting and mapping of radiation locations on computer monitors at a host station. A multitude of high performance scintillation detectors detect radiation while the on-board system controls the direction and speed of the robot due to pre-programmed paths. The operators may revise the preselected movements of the robotic system by ethernet communications to remonitor areas of radiation or to avoid walls, columns, equipment, or containers. The robotic system is capable of floor survey speeds of from 1/2-inch per second up to about 30 inches per second, while the on-board processor collects, stores, and transmits information for real-time mapping of radiation intensity and the locations of the radiation for real-time display on computer monitors at a central command console.

  20. AUTONOMOUS MOBILE BUOY (A-M-B) COASTAL & LAGOON: autonomous monitoring and sampling

    E-Print Network [OSTI]

    Wood, Stephen L.

    AUTONOMOUS MOBILE BUOY (A-M-B) COASTAL & LAGOON: autonomous monitoring and sampling PI: Stephen, goals and objectives The project objective of this proposal is to develop an Autonomous Mobile Buoy of a prototype autonomous (computer controlled) mobile buoy (A-M-B) to monitor coastal and lagoon areas

  1. Children's Exposure to Mobile In-App Advertising: An Analysis of Content Appropriateness

    E-Print Network [OSTI]

    Zhu, Sencun

    Children's Exposure to Mobile In-App Advertising: An Analysis of Content Appropriateness Ying Chen1 that mobile advertisements may contain violent and sexual content even when the app itself is safe for children. Because mobile advertisements are not controlled by the content rating of apps, unexpected

  2. International Atomic Energy Agency specialists meeting on experience in ageing, maintenance, and modernization of instrumentation and control systems for improving nuclear power plant availability

    SciTech Connect (OSTI)

    Not Available

    1993-10-01

    This report presents the proceedings of the Specialist`s Meeting on Experience in Aging, Maintenance and Modernization of Instrumentation and Control Systems for Improving Nuclear Power Plant Availability that was held at the Ramada Inn in Rockville, Maryland on May 5--7, 1993. The Meeting was presented in cooperation with the Electric Power Research Institute, Oak Ridge National Laboratory and the International Atomic Energy Agency. There were approximately 65 participants from 13 countries at the Meeting. Individual reports have been cataloged separately.

  3. MobilityFirst: A Robust and Trustworthy Mobility-Centric

    E-Print Network [OSTI]

    Garfunkel, Eric

    starting, ~5-10B units by 2020 INTERNET Wireless Edge Network INTERNET ~1B server/PC's, ~700M smart phones and opportunistic data delivery Mobile DTN Router Roadway Sensors Mobile DTN User/Router Ad-Hoc Network Opportunistic High-Speed Link (MB/s) Mobile P2P User Infostations Router MOBILE INTERNET Disconnection

  4. Experiments in Competence Acquisition for Autonomous Mobile Robots 

    E-Print Network [OSTI]

    Nehmzow, Ulrich

    This thesis addresses the problem of intelligent control of autonomous mobile robots, particularly under circumstances unforeseen by the designer.As the range of applications for autonomous robots widens and increasingly ...

  5. Energy management in mobile devices with the cinder operating system

    E-Print Network [OSTI]

    Roy, Arjun

    We argue that controlling energy allocation is an increasingly useful and important feature for operating systems, especially on mobile devices. We present two new low-level abstractions in the Cinder operating system, ...

  6. Energy Management in Mobile Devices with the Cinder Operating System

    E-Print Network [OSTI]

    Roy, Arjun

    We argue that controlling energy allocation is an increasingly useful and important feature for operating systems, especially on mobile devices. We present two new low-level abstractions in the Cinder operating system, ...

  7. Autonomous navigation with mobile robot using ultrasonic rangefinders

    E-Print Network [OSTI]

    Campion, Joseph (Joseph F.)

    2015-01-01

    In this thesis, I designed and implemented an autonomous navigation system for a four-wheeled mobile robot with ultrasonic sonar sensors and a National Instruments myRIO real-time controller. LabVIEW code was developed to ...

  8. Guidance for Deployment of Mobile Technologies for Nuclear Power Plant Field Workers

    SciTech Connect (OSTI)

    Heather D. Medema; Ronald K. Farris

    2012-09-01

    This report is a guidance document prepared for the benefit of commercial nuclear power plants’ (NPPs) supporting organizations and personnel who are considering or undertaking deployment of mobile technology for the purpose of improving human performance and plant status control (PSC) for field workers in an NPP setting. This document especially is directed at NPP business managers, Electric Power Research Institute, Institute of Nuclear Power Operations, and other non-Information Technology personnel. This information is not intended to replace basic project management practices or reiterate these processes, but is to support decision-making, planning, and preparation of a business case.

  9. Limits of social mobilization

    E-Print Network [OSTI]

    Pentland, Alex Paul

    The Internet and social media have enabled the mobilization of large crowds to achieve time-critical feats, ranging from mapping crises in real time, to organizing mass rallies, to conducting search-and-rescue operations ...

  10. RM12-2703 Advanced Rooftop Unit Control Retrofit Kit Field Demonstration: Hawaii and Guam Energy Improvement Technology Demonstration Project

    SciTech Connect (OSTI)

    Doebber, I.; Dean, J.; Dominick, J.; Holland, G.

    2014-03-01

    As part of its overall strategy to meet its energy goals, the Naval Facilities Engineering Command (NAVFAC) partnered with U.S. Department of Energy's (DOE) National Renewable Energy Laboratory (NREL) to rapidly demonstrate and deploy cost-effective renewable energy and energy efficiency technologies. This was one of several demonstrations of new and underutilized commercial energy efficiency technologies. The consistent year-round demand for air conditioning and dehumidification in Hawaii provides an advantageous demonstration location for advanced rooftop control (ARC) retrofit kits to packaged rooftop units (RTUs). This report summarizes the field demonstration of ARCs installed on nine RTUs serving a 70,000-ft2 exchange store (large retail) and two RTUs, each serving small office buildings located on Joint Base Pearl Harbor-Hickam (JBPHH).

  11. Mobility Management in Cellular Telephony Benjamin P. Cooke

    E-Print Network [OSTI]

    Mobility Management in Cellular Telephony Benjamin P. Cooke , Darongsae Kwon , Dmitry Glotov. The left hand side of each inequality (5) is composed of the load resulting from hand-offs within a controller, from a controller, and to a controller. Here, q represents the load from handing over a call

  12. EFFECT OF MOBILITY ON PERFORMANCE OF WIRELESS AD-HOC NETWORK PROTOCOLS.

    SciTech Connect (OSTI)

    Barrett, C. L. (Christopher L.); Drozda, M. (Martin); Marathe, M. V. (Madhav V.); Marathe, A. (Achla)

    2001-01-01

    We empirically study the effect of mobility on the performance of protocols designed for wireless adhoc networks. An important ohjective is to study the interaction of the Routing and MAC layer protocols under different mobility parameters. We use three basic mobility models: grid mobility model, random waypoint model, and exponential correlated random model. The performance of protocols was measured in terms of (i) latency, (ii) throughput, (iii) number of packels received, (iv) long term fairness and (v) number of control packets at the MAC layer level. Three different commonly studied routing protocols were used: AODV, DSR and LAR1. Similarly three well known MAC protocols were used: MACA, 802.1 1 and CSMA. The inair1 conclusion of our study include the following: 1. 'I'he performance of the: network varies widely with varying mobility models, packet injection rates and speeds; and can ba in fact characterized as fair to poor depending on the specific situation. Nevertheless, in general, it appears that the combination of AODV and 802.1 I is far better than other combination of routing and MAC protocols. 2. MAC layer protocols interact with routing layer protocols. This concept which is formalized using statistics implies that in general it is not meaningful to speak about a MAC or a routing protocol in isolation. Such an interaction leads to trade-offs between the amount of control packets generated by each layer. More interestingly, the results wise the possibility of improving the performance of a particular MAC layer protocol by using a cleverly designed routing protocol or vice-versa. 3. Routing prolocols with distributed knowledge about routes are more suitable for networks with mobility. This is seen by comparing the performance of AODV with DSR or LAR scheme 1. In DSli and IAR scheme 1, information about a computed path is being stored in the route query control packct. 4. MAC layer protocols have varying performance with varying mobility models. It is not only speed that influences the performance but also node degree and connectivity of the dynamic network that affects the protocol performance. 'The main implication of OUI' work is that performance analysis of protocols at a given level in the protocol stack need to be studied not locally in isolation but as a part of the complete protocol stack. The results suggest that in order to improve the pcrlormance of a communication network, it will be important to study the entire protocol stack as a single algorithmic construct; optimizing individual layers in the 7 layer OS1 stilck will not yield performance improvements beyond a point. A methodological contribution of this paper is the use of statistical methods such as design of experinierits arzd aiialysis qf variance methods to characterize the interaction between the protocols, mobility patterns and speed. This allows us to mako much more informed conclusions about the performance of thc protocols than would have been possible by merely running these experiments and observing the data. These ideas are of independtmt interest and are applicable in other contexts wherein one experimentally analyzes algorithms.

  13. Supplement: Thousands of human mobile element

    E-Print Network [OSTI]

    Pratt, Vaughan

    Supplement: Thousands of human mobile element fragments undergo strong purifying selection near Supplemental material Supplemental text, tables, and figures. S1 pan-boreoeutherian mobile elements Mobile

  14. Update on mobile applications in dermatology

    E-Print Network [OSTI]

    Patel, Shivani; Eluri, Madhu; Boyers, Lindsay N; Karimkhani, Chante; Dellavalle, Robert

    2015-01-01

    Background: As the use of mobile devices surpasses that ofSuper Retina display, on mobile devices. Teledermatologyowned a smartphone, and mobile application devices surpassed

  15. Helping Developers Construct Secure Mobile Applications

    E-Print Network [OSTI]

    Chin, Erika Michelle

    2013-01-01

    Privacy in Smartphones and Mobile devices (SPSM), 2011. [25]Privacy in Smartphones and Mobile Devices (SPSM), 2011. [34]Privacy in Smartphones and Mobile Devices (SPSM), 2012. [63

  16. Mobility platform coupling device and method for coupling mobility platforms

    DOE Patents [OSTI]

    Shirey, David L. (Albuquerque, NM); Hayward, David R. (Albuquerque, NM); Buttz, James H. (Albuquerque, NM)

    2002-01-01

    A coupling device for connecting a first mobility platform to a second mobility platform in tandem. An example mobility platform is a robot. The coupling device has a loose link mode for normal steering conditions and a locking position, tight link mode for navigation across difficult terrain and across obstacles, for traversing chasms, and for navigating with a reduced footprint in tight steering conditions.

  17. Controlled Mobility for Sustainable Wireless Networks

    E-Print Network [OSTI]

    Kansal, Aman; Rahimi, Mohammed; Kaiser, W J; Srivastava, Mani B; Pottie, Gregory; Estrin, D

    2004-01-01

    sustainable and precise fashion within complex three- dimensional environments. The NIMS architecture

  18. Control Freaks How Online and Mobile Communication

    E-Print Network [OSTI]

    Carlini, David

    missiles, ships, planes and submarines" The internet: communicate in time of war Late 1960s: develop decentralized computer system to transmit information across the US in case of nuclear attack 3 #12

  19. Mobile Communication Security Controllers An Evaluation Paper

    E-Print Network [OSTI]

    Mayes, Keith

    of communications devices, some manufacturers claim that the hardware selection, chip design, operating system investigates the suggestion. 1This has also extended into some regions using variants of CDMA standards where the exchange of digital content and sensitive information. Whilst there are many initiatives aimed to offer new

  20. Demand Controlled Ventilation for Improved Humidity Control 

    E-Print Network [OSTI]

    Rogers, J. K.

    1996-01-01

    , outside air can be minimized without exceeding recommended IAQ guidelines. INTRODUCTION The greatest single contributor to building energy loads in humid climates is the cooling and dehumidifying of outside air which is brought in for ventilation...

  1. Morphing content in mobile applications

    E-Print Network [OSTI]

    Wang, Kevin Y

    2009-01-01

    Smart phones are quickly becoming an integral part of our everyday lives. However, the mobile industry is still young, and the full potential of mobile phones has yet to be tapped. In this thesis, I present the design of ...

  2. Webinar: Fuel Cell Mobile Lighting

    Broader source: Energy.gov [DOE]

    Video recording of the Fuel Cell Technologies Office webinar, Fuel Cell Mobile Lighting, originally presented on November 13, 2012.

  3. Mobile lighting apparatus

    DOE Patents [OSTI]

    Roe, George Michael; Klebanoff, Leonard Elliott; Rea, Gerald W; Drake, Robert A; Johnson, Terry A; Wingert, Steven John; Damberger, Thomas A; Skradski, Thomas J; Radley, Christopher James; Oros, James M; Schuttinger, Paul G; Grupp, David J; Prey, Stephen Carl

    2013-05-14

    A mobile lighting apparatus includes a portable frame such as a moveable trailer or skid having a light tower thereon. The light tower is moveable from a stowed position to a deployed position. A hydrogen-powered fuel cell is located on the portable frame to provide electrical power to an array of the energy efficient lights located on the light tower.

  4. Mobile Communications May 30, 2013

    E-Print Network [OSTI]

    Mobile Communications Program May 30, 2013 #12;Overview Background Financial Aspects Operational to be migrated to the new (master) Verizon account. #12;Financial Aspects Billing Plans & Devices Deployment plans include mobile-mobile, nights & weekends Smartphones ­ 400 minute plan, includes unlimited data

  5. Mobile Database Ouri Wolfson1

    E-Print Network [OSTI]

    Wolfson, Ouri E.

    that resides on a mobile device such as a PDA, a smart phone, or a laptop. Such devices are often limited in resources such as memory, computing power, and battery power. Key Points Due to device limitations, a mobile are usually posed by the user of the mobile device. Updates of the database may originate from the user

  6. Mobile Recommender Systems Francesco Ricci

    E-Print Network [OSTI]

    Ricci, Francesco

    particular request. Here, in the contest of information access through mobile devices, the information environments. At the same time, the evolution of mobile devices, e.g., personal digital assistants (PDAs of the development of these technologies and the incredible appeal of mobile devices and services there has been also

  7. Division 1137 property control system

    SciTech Connect (OSTI)

    Pastor, D.J.

    1982-01-01

    An automated data processing property control system was developed by Mobile and Remote Range Division 1137. This report describes the operation of the system and examines ways of using it in operational planning and control.

  8. Improving Inventory Control Using Forecasting

    E-Print Network [OSTI]

    Balandran, Juan

    2005-12-16

    and encouragement. I am very grateful to Lucille and Michael Hobbs for their friendship, understanding and financial support. Finally, thank you to Tom Decker, Pat Jackson and Brian Zellar for all their contributions and hard work on this project... below: 1. Na?ve 2. Linear Regression 3. Moving Average 4. Exponential 5. Double exponential The na?ve forecasting method assumes that more recent data values are the best predictors of future values. The model is ? t+1 = Y t . Where ? t...

  9. CHI 2005 PAPERS: Affect and Intimacy April 27 Portland, Oregon, USA Toward Subtle Intimate Interfaces for Mobile Devices

    E-Print Network [OSTI]

    Lawrie, Dawn J.

    Interfaces for Mobile Devices Using an EMG Controller Enrico Costanza1,2 , Samuel A. Inverso1 , Rebecca Allen 02139, USA enrico@media.mit.edu ABSTRACT Using a mobile device in a social context should not cause embarrassment and disruption to the immediate environment. Interaction with mobile and wearable devices needs

  10. IEEE TRANSACTIONS ON AUTOMATIC CONTROL 1 Coverage and Energy Consumption Control in

    E-Print Network [OSTI]

    Wang, Xinbing

    IEEE TRANSACTIONS ON AUTOMATIC CONTROL 1 Coverage and Energy Consumption Control in Mobile Abstract--In this paper 1 , we investigate the coverage and energy consumption control in mobile. Meanwhile, we can operate a tradeoff control between coverage performance and energy consumption

  11. Mobile workstation for decontamination and decommissioning operations

    SciTech Connect (OSTI)

    Whittaker, W.L.; Osborn, J.F.; Thompson, B.R.

    1993-10-01

    This project is an interdisciplinary effort to develop effective mobile worksystems for decontamination and decommissioning (D&D) of facilities within the DOE Nuclear Weapons Complex. These mobile worksystems will be configured to operate within the environmental and logistical constraints of such facilities and to perform a number of work tasks. Our program is designed to produce a mobile worksystem with capabilities and features that are matched to the particular needs of D&D work by evolving the design through a series of technological developments, performance tests and evaluations. The project has three phases. In this the first phase, an existing teleoperated worksystem, the Remote Work Vehicle (developed for use in the Three Mile Island Unit 2 Reactor Building basement), was enhanced for telerobotic performance of several D&D operations. Its ability to perform these operations was then assessed through a series of tests in a mockup facility that contained generic structures and equipment similar to those that D&D work machines will encounter in DOE facilities. Building upon the knowledge gained through those tests and evaluations, a next generation mobile worksystem, the RWV II, and a more advanced controller will be designed, integrated and tested in the second phase, which is scheduled for completion in January 1995. The third phase of the project will involve testing of the RWV II in the real DOE facility.

  12. An Electrochemical Potentiostat Interface for Mobile Devices: Enabling Remote Medical Diagnostics

    E-Print Network [OSTI]

    Fu, Henry; Lew, Michael; Menon, Shruti; Scratchley, Craig; Parameswaran, M Ash

    2015-01-01

    An electrochemical potentiostat interface for mobile devices has been designed and implemented. The interface consists of a potentiostat module, a microcontroller module, and a Bluetooth module. The potentiostat module performs electrochemical measurements and detects the responses from the samples. The microcontroller module controls the test and communication processes. The Bluetooth module links the system to a mobile device, where the mobile device acts as a control-console, data storage system, communication unit, and graphical plotter for the overall diagnostic processes. This interface is suitable for point-of-care and remote diagnostics, enhancing the capabilities of mobile devices in telemedicine.

  13. Mobile Biomass Pelletizing System

    SciTech Connect (OSTI)

    Thomas Mason

    2009-04-16

    This grant project examines multiple aspects of the pelletizing process to determine the feasibility of pelletizing biomass using a mobile form factor system. These aspects are: the automatic adjustment of the die height in a rotary-style pellet mill, the construction of the die head to allow the use of ceramic materials for extreme wear, integrating a heat exchanger network into the entire process from drying to cooling, the use of superheated steam for adjusting the moisture content to optimum, the economics of using diesel power to operate the system; a break-even analysis of estimated fixed operating costs vs. tons per hour capacity. Initial development work has created a viable mechanical model. The overall analysis of this model suggests that pelletizing can be economically done using a mobile platform.

  14. Mobile Terminal Energy Management for Sustainable Multi-homing Video Transmission

    E-Print Network [OSTI]

    Zhuang, Weihua

    ]. In addition to develop- ing new battery technology with improved capacity, the MT operational period between1 Mobile Terminal Energy Management for Sustainable Multi-homing Video Transmission Muhammad Ismail-system is proposed for mobile terminals (MTs) to support a sustainable multi-homing video transmission, over the call

  15. Users and Batteries: Interactions and Adaptive Energy Management in Mobile Systems

    E-Print Network [OSTI]

    Zhong, Lin

    Users and Batteries: Interactions and Adaptive Energy Management in Mobile Systems Nilanjan, 3 Univ. of San Francisco Abstract. Battery lifetime has become one of the top usability con- cerns of mobile systems. While many endeavors have been devoted to improving battery lifetime, they have fallen

  16. Personal Data Vault: A Privacy Architecture for Mobile Personal Sensing

    E-Print Network [OSTI]

    2009-01-01

    the data Mobile Devices Mobile Client Service Providers/backup CAPTURE Personal Mobile Devices Provide Expressive 

  17. Mobile Source Air Toxics Rule (released in AEO2008)

    Reports and Publications (EIA)

    2008-01-01

    On February 9, 2007, the Environmental Protection Agency (EPA) released its MSAT2 rule, which will establish controls on gasoline, passenger vehicles, and portable fuel containers. The controls are designed to reduce emissions of benzene and other hazardous air pollutants. Benzene is a known carcinogen, and the EPA estimates that mobile sources produced more than 70% of all benzene emissions in 1999. Other mobile source air toxics, including 1,3-butadiene, formaldehyde, acetaldehyde, acrolein, and naphthalene, also are thought to increase cancer rates or contribute to other serious health problems.

  18. Modeling, Simulation, and Practice of Floor Control for Synchronous and Ubiquitous

    E-Print Network [OSTI]

    : Floor control, Ubiquitous collaboration, Synchronous collaboration, Mobile devices, Human-computer dispersed virtual place. Mobile computing paradigm [34] made ubiquitous access possible with the integration1 Modeling, Simulation, and Practice of Floor Control for Synchronous and Ubiquitous Collaboration

  19. Parasitic mobility for sensate media

    E-Print Network [OSTI]

    Laibowitz, Matthew Joel, 1975-

    2004-01-01

    Distributed sensor networks offer many new capabilities for monitoring environments with applicability to medical, industrial, military, anthropological, and experiential fields. By making such systems mobile, we increase ...

  20. Space exploration challenges : characterization and enhancement of space suit mobility and planetary protection policy analysis

    E-Print Network [OSTI]

    Holschuh, Bradley Thomas

    2010-01-01

    This thesis addresses two challenges associated with advanced space and planetary exploration: characterizing and improving the mobility of current and future gas pressurized space suits; and developing effective domestic ...

  1. Interactive Video Browsing on Mobile Devices Wolfgang Hrst

    E-Print Network [OSTI]

    Hürst, Wolfgang

    on modern handheld devices, such as multimedia cellphones and personal digital assistants (PDAs), due to significant improvements in their processing power. However, screen size remains a limiting resource making cellphones. Our solution ­ called the MobileZoomSlider ­ enables users to intuitively skim a video along

  2. Menu Structuring for Mobile Devices Katrin Sauerwein1

    E-Print Network [OSTI]

    @sfu.ca, alexander.de.luca@ifi.lmu.de Abstract: This project sets a discussion about possible improvements for mobile images. The Manhattan Lens Stairs approach is based on human spatial memory abilities. It uses the Manhattan Lens to differ between important and unimportant items. Finally the Dynamic Neighbors ap- proach

  3. MobileMatch App

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home Room NewsInformationJessework uses concrete7 AssessmentBusinessAlternative FuelingMobileMatch

  4. Intentional Mobility in Wireless Sensor Networks 1 INTENTIONAL MOBILITY IN

    E-Print Network [OSTI]

    Tseng, Yu-Chee

    applications, wireless sensor networks. 1. Introduction The rapid growth of micro-sensing MEMS and wirelessIntentional Mobility in Wireless Sensor Networks 1 Chapter 1 INTENTIONAL MOBILITY IN WIRELESS SENSOR NETWORKS You-Chiun Wang and Yu-Chee Tseng Department of Computer Science National Chiao

  5. MEMS: Detection and Tracking of Mobile Eevents Using Mobile Sensors

    E-Print Network [OSTI]

    Han, Qi "Chee"

    MEMS: Detection and Tracking of Mobile Eevents Using Mobile Sensors Na Yu and Qi Han Department interchangeably in the following. This paper presents MEMS--a novel pipelined approach for dynamic event detection and tracking. The noteworthy features of MEMS are that it (1) uses detection robots in a distributed way; (2

  6. Improving Energy Efficiency of Location Sensing on Smartphones

    E-Print Network [OSTI]

    Sivakumar, Raghupathy

    battery life by up to 75%. Categories and Subject Descriptors C.3.3 [Special-Purpose and Application-Based Applications (LBAs) have been adopted by mobile users for always-on contact for social-networking, busi- nesses to improve the battery life of mobile devices [11, 32­34], but little rigor and attention has been devoted

  7. JAMUS: Java Accommodation of Mobile Untrusted Software Nicolas Le Sommer and Frdric Guidec

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    JAMUS: Java Accommodation of Mobile Untrusted Software Nicolas Le Sommer and Frédéric Guidec (Java Accommodation of Mobile Un- trusted Software) platform we tackle these problems based on a contractual approach of resource manage- ment and access control. JAMUS can accommodate mo- bile Java

  8. A Quality-and Cost-based Selection Model for Multimedia Service Composition in Mobile Environments

    E-Print Network [OSTI]

    Balke, Wolf-Tilo

    -specific characteristics, e.g., the current battery level. Hence, mobile devices experience problems beyond the mere and network-specific or device-specific alarms. The sophisti- cated control flow dynamically chooses to the quality of the multimedia content and the dis- play or battery capabilities of the mobile device [11]. Fur

  9. Future Diesel Engine Thermal Efficiency Improvement andn Emissions...

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

    Diesel Engine Thermal Efficiency Improvement andn Emissions Control Technology Future Diesel Engine Thermal Efficiency Improvement andn Emissions Control Technology 2005 Diesel...

  10. Locative Life: Geocaching, Mobile Gaming, and Embodiment

    E-Print Network [OSTI]

    Farman, Jason

    2009-01-01

    the screen space of the mobile device and the player’sspace between the gamer’s mobile device and the gaze of thePlayers use their mobile devices (from GPS receivers to

  11. Addressing the needs of mobile users

    E-Print Network [OSTI]

    Sohn, Timothy Youngjin

    2008-01-01

    search terms o?ine on a mobile device, and then address theminput modality to a mobile device, and recognizing input cannoti?cation cues for mobile devices. In CHI ’00: CHI ’00

  12. Research Article Electrophoretic mobility measurements

    E-Print Network [OSTI]

    Santiago, Juan G.

    of the electroosmotic flow (EOF)-suppressing polymer polyvinylpyrrolidone (PVP) on the electrophoretic mobilities­desorption dynamics of all three analytes, with particular attention to cationic R6G. Keywords: Absolute mobility a known leading electrolyte chemistry and focuses sample species into plateau mode (maximum, locally

  13. Mobile Robotics Activities in DOE Laboratories

    SciTech Connect (OSTI)

    Ron Lujan; Jerry Harbour; John T. Feddema; Sharon Bailey; Jacob Barhen; David Reister

    2005-03-01

    This paper will briefly outline major activities in Department of Energy (DOE) Laboratories focused on mobile platforms, both Unmanned Ground Vehicles (UGV’s) as well as Unmanned Air Vehicles (UAV’s). The activities will be discussed in the context of the science and technology construct used by the DOE Technology Roadmap for Robotics and Intelligent Machines (RIM)1 published in 1998; namely, Perception, Reasoning, Action, and Integration. The activities to be discussed span from research and development to deployment in field operations. The activities support customers in other agencies. The discussion of "perception" will include hyperspectral sensors, complex patterns discrimination, multisensor fusion and advances in LADAR technologies, including real-world perception. "Reasoning" activities to be covered include cooperative controls, distributed systems, ad-hoc networks, platform-centric intelligence, and adaptable communications. The paper will discuss "action" activities such as advanced mobility and various air and ground platforms. In the RIM construct, "integration" includes the Human-Machine Integration. Accordingly the paper will discuss adjustable autonomy and the collaboration of operator(s) with distributed UGV’s and UAV’s. Integration also refers to the applications of these technologies into systems to perform operations such as perimeter surveillance, large-area monitoring and reconnaissance. Unique facilities and test beds for advanced mobile systems will be described. Given that this paper is an overview, rather than delve into specific detail in these activities, other more exhaustive references and sources will be cited extensively.

  14. Laterally Mobile, Functionalized Self-Assembled Monolayers at the Fluorous?Aqueous Interface in a Plug-Based Microfluidic System: Characterization and Testing with Membrane Protein Crystallization

    SciTech Connect (OSTI)

    Kreutz, Jason E.; Li, Liang; Roach, L. Spencer; Hatakeyama, Takuji; Ismagilov, Rustem F.; (UC)

    2009-11-04

    This paper describes a method to generate functionalizable, mobile self-assembled monolayers (SAMs) in plug-based microfluidics. Control of interfaces is advancing studies of biological interfaces, heterogeneous reactions, and nanotechnology. SAMs have been useful for such studies, but they are not laterally mobile. Lipid-based methods, though mobile, are not easily amenable to setting up the hundreds of experiments necessary for crystallization screening. Here we demonstrate a method, complementary to current SAM and lipid methods, for rapidly generating mobile, functionalized SAMs. This method relies on plugs, droplets surrounded by a fluorous carrier fluid, to rapidly explore chemical space. Specifically, we implemented his-tag binding chemistry to design a new fluorinated amphiphile, RfNTA, using an improved one-step synthesis of RfOEG under Mitsunobu conditions. RfNTA introduces specific binding of protein at the fluorous-aqueous interface, which concentrates and orients proteins at the interface, even in the presence of other surfactants. We then applied this approach to the crystallization of a his-tagged membrane protein, Reaction Center from Rhodobacter sphaeroides, performed 2400 crystallization trials, and showed that this approach can increase the range of crystal-producing conditions, the success rate at a given condition, the rate of nucleation, and the quality of the crystal formed.

  15. Mobile Robot Sensing for Environmental Applications

    E-Print Network [OSTI]

    2007-01-01

    deployable cable based robot,” in IEEE ICRA, Rome, Italy,Mobile robot sensing for environmental applications Amarjeetsystems per- formed using mobile robot sensing systems. Both

  16. Control Theory of Digitally Networked Dynamic Systems

    E-Print Network [OSTI]

    Knobloch,JĂĽrgen

    Control Theory of Digitally Networked Dynamic Systems #12;Jan Lunze Editor Control Theory control technology for mobile objects. Due to this flexibility, a new challenge for control theory about networked control systems as a new area of control theory. This book gives a concise introduc

  17. Water-soluble hydrophobically associating polymers for improved oil recovery: A literature review

    SciTech Connect (OSTI)

    Taylor, K.C. [Petroleum Recovery Inst., Calgary, Alberta (Canada); Nasr-El-Din, H.A. [Saudi Aramco, Dhahran (Saudi Arabia)

    1995-11-01

    Water-soluble hydrophobically associating polymers are reviewed with particular emphasis on their application in improved oil recovery (IOR). These polymers are very similar to conventional water-soluble polymers used in IOR, except that they have a small number of hydrophobic groups incorporated into the polymer backbone. At levels of incorporation of less than 1 mol%, these hydrophobic groups can significantly change polymer performance. These polymers have potential for use in mobility control, drilling fluids and profile modification. This review includes synthesis, characterization, stability, rheology and flow in porous media of associating polymers in IOR are also examined. 100 refs., 2 tabs.

  18. On Optimal Information Capture by Energy-Constrained Mobile Sensor

    E-Print Network [OSTI]

    2010-05-31

    Key Laboratory of Industrial Control Technology under Open Funding Grant. ICT0901 ... Digital Object Identifier 10.1109/TVT.2010.2044592 cycles of ... downloaded data to a data sink for analysis. ... The goal is to design a mobile coverage schedule to maximize ... tional shares while maximizing the QoM of the total system.

  19. 5G Network Architecture and the Future Mobile Internet

    E-Print Network [OSTI]

    Garfunkel, Eric

    Vision Faster radio ~Gbps Low-latency wireless access ~ms Dynamic spectrum, multiple radio access Internet Architecture LTE w/FIA interface WiFi w/FIA interface Standard FIA Router FIA Distributed Control Internet Architecture (FIA) MobilityFirst Project Wireless Technology Trend "5G" Internet Technology Trend

  20. AGILE: Software Architecture for Mobility L. Andrade6

    E-Print Network [OSTI]

    Baldan, Paolo

    AGILE: Software Architecture for Mobility L. Andrade6 , P. Baldan8 , H. Baumeister1 , R. Bruni2 , A Venezia Abstract. Architecture-based approaches have been promoted as a means of controlling an additional factor of complexity, one for which current architectural concepts and techniques can be hardly

  1. Enhancements to SQLite Library to Improve Performance on Mobile Platforms 

    E-Print Network [OSTI]

    Sambasivan Ramachandran, Shyam

    2013-07-29

    , the storage system can become a performance bottleneck, as applications download larger amounts of data. The following work in this thesis addresses these issues by providing approaches to increase concurrency and add light-weight locking mechanisms...

  2. Modeled and observed ozone sensitivity to mobile-source emissions in Mexico City

    E-Print Network [OSTI]

    Zavala, M.

    The emission characteristics of mobile sources in the Mexico City Metropolitan Area (MCMA) have changed significantly over the past few decades in response to emission control policies, advancements in vehicle technologies ...

  3. A Scenario-Based Mobile Application for Robot-Assisted Smart Digital Homes

    E-Print Network [OSTI]

    Manashty, Ali Reza; Jahromi, Zahra Forootan

    2010-01-01

    Smart homes are becoming more popular, as every day a new home appliance can be digitally controlled. Smart Digital Homes are using a server to make interaction with all the possible devices in one place, on a computer or webpage. In this paper we designed and implemented a mobile application using Windows Mobile platform that can connect to the controlling server of a Smart Home and grants the access to the Smart Home devices and robots everywhere possible. UML diagrams are presented to illustrate the application design process. Robots are also considered as devices that are able to interact to other object and devices. Scenarios are defined as a set of sequential actions to help manage different tasks all in one place. The mobile application can connect to the server using GPRS mobile internet and Short Message System (SMS). Interactive home map is also designed for easier status-checking and interacting with the devices using the mobile phones.

  4. IEEE TRANSACTIONS ON COMPUTER-AIDED DESIGN OF INTEGRATED CIRCUITS AND SYSTEMS, VOL. 18, NO. 11, NOVEMBER 1999 1529 Improving the Observability and Controllability

    E-Print Network [OSTI]

    Potkonjak, Miodrag

    IEEE TRANSACTIONS ON COMPUTER-AIDED DESIGN OF INTEGRATED CIRCUITS AND SYSTEMS, VOL. 18, NO. 11 design observability and controllability. To facilitate debugging, and in particular error diagnosis, we-based debugging for full design visibility and controllability. The new debugging approach introduces several

  5. Building America Case study: Advanced Controls Improve Performance of Combination Space and Water Heating Systems, Minneapolis, Minnesota (Fact Sheet), Technology Solutions for New and Existing Homes, Energy Efficiency & Renewable Energy (EERE)

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

    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 Rank EERE:FinancingPetroleum Based Fuels ResearchofDerivativeColdSealed Crawl SpacesControls Improve

  6. Sensing Across Mobiles and the Cloud: Architectural Styles and Software Mechanisms

    E-Print Network [OSTI]

    Choi, Haksoo

    2015-01-01

    Mobile Devices . . . . . . . . . . . . . . . . . . . . . . . . . . .mobile-development/development-devices/ mobile-development-Collaboration of mobile devices and cloud systems are

  7. MIT Mobile Robots - What's Next?

    E-Print Network [OSTI]

    Flynn, Anita M.

    The MIT Mobile Robot Project began in January of 1985 with the objective of building machines that could operate autonomously and robustly in dynamically changing environments. We now have four working robots, each ...

  8. Imaging mobile zinc in biology

    E-Print Network [OSTI]

    Tomat, Elisa

    Trafficking and regulation of mobile zinc pools influence cellular functions and pathological conditions in multiple organs, including brain, pancreas, and prostate. The quest for a dynamic description of zinc distribution ...

  9. Sketch Recognition on Mobile Devices 

    E-Print Network [OSTI]

    Lucchese, George 1987-

    2012-11-29

    to suggest that using a finger as an input implement leads to a decrease in simple shape recognition accuracy. These results show that the same geometric shape recognizers developed for pen applications can be used in mobile applications, provided...

  10. Software-Defined Mobile Cloud

    E-Print Network [OSTI]

    Ku, Ian

    2014-01-01

    M. Gerla. “Towards Software- Defined VANETs: ArchitectureI. Ku, Y. Lu, and M. Gerla. “Software-Defined Mobile Cloud:C. Peylo, “CloudMAC: towards software defined WLANs,” ACM

  11. Mobile application for utility domains

    E-Print Network [OSTI]

    Tappan, Jacqueline

    This research, a collaboration between MIT and ABB/Ventyx, is focused on the development of a mobile interface for field workers in power repair settings and field service delivery. A Human Systems Engineering (HSE) approach ...

  12. Further Thoughts on Landscaping Mobile Social Media and Mobile Payments in Indonesia

    E-Print Network [OSTI]

    Chen, Zhongping

    1 Further Thoughts on Landscaping Mobile Social Media and Mobile Payments in Indonesia Tom and research of the research terms for the "Landscaping Mobile Social Media and Mobile Payments in Indonesia and Mobile Payments in Indonesia," which took place in Surabaya, Indonesia, on September 28 and 29, 2012

  13. NREL’s Controllable Grid Interface Saves Time and Resources, Improves Reliability of Renewable Energy Technologies; NREL (National Renewable Energy Laboratory)

    SciTech Connect (OSTI)

    2015-07-01

    The National Renewable Energy Laboratory's (NREL) controllable grid interface (CGI) test system at the National Wind Technology Center (NWTC) is one of two user facilities at NREL capable of testing and analyzing the integration of megawatt-scale renewable energy systems. The CGI specializes in testing of multimegawatt-scale wind and photovoltaic (PV) technologies as well as energy storage devices, transformers, control and protection equipment at medium-voltage levels, allowing the determination of the grid impacts of the tested technology.

  14. CAMPO Mobility 2030 Plan 

    E-Print Network [OSTI]

    Capital Area Metropolitan Planning Organization

    2005-06-06

    lines; ? 1,014 additional lane miles of freeways, parkways, or toll ways, including completion of SH 45 (N), SH 45 (S), SH 130, and US 183 A and upgrades or improvements to IH-35, US 183 (N), US 183 (S), US 290 (E), US 290 (W), SH 71 (E), SH 71 (W...

  15. GIFT: A GEOSPATIAL IMAGE AND VIDEO FILTERING TOOL FOR COMPUTER VISION APPLICATIONS WITH GEO-TAGGED MOBILE VIDEOS

    E-Print Network [OSTI]

    Shahabi, Cyrus

    of geo-tagged videos or sensor-rich videos [1, 2]. Many studies focused on extracting geospatial metadata- tagged mobile videos. GIFT tightly couples mobile medi- a content and their geospatial metadata for fine, improved efficiency, ac- curacy and scalability. Index Terms-- geo-tagged, geospatial metadata, video

  16. Mobile Netw Appl DOI 10.1007/s11036-008-0133-6

    E-Print Network [OSTI]

    Chen, Min

    Mobile Netw Appl DOI 10.1007/s11036-008-0133-6 Directional Controlled Fusion in Wireless Sensor data fusion and load balancing. We propose a novel directional-controlled fusion (DCF) scheme, consisting of two key algorithms termed as directional control and multipath fusion. By adjusting a key

  17. The mobile common : A guide to mobile open source and its effects on mobile device manufacturers

    E-Print Network [OSTI]

    Markus, Ofri

    2009-01-01

    At the beginning of 2009, the global mobile industry is in the midst of a revolution, characterized by a trend towards openness, driven by technological advances, evolving consumer demands and increasing competition. Open ...

  18. I-PMIP: An Inter-Domain Mobility Extension for Proxy-Mobile IP

    E-Print Network [OSTI]

    Fu, Xiaoming

    -based localized mobility management that avoids tunneling overhead on the inter- face which connects a MN to it PMIP-enabled mobility domain, the new mobile access gateways do not have any relation to the previous

  19. Evaluation of Traffic Data Obtained via GPS-Enabled Mobile Phones: the Mobile Century Field Experiment

    E-Print Network [OSTI]

    Herrera, Juan C.; Work, Daniel B.; Herring, Ryan; Ban, Xuegang Jeff; Bayen, Alexandre M

    2009-01-01

    using GPS en- abled mobile devices. In Proc. of the 47thdata from GPS enabled mobile devices. In the case of thewhen sampling using mobile devices. A variety of methods can

  20. Bulk Power System Dynamics and Control IV -Restructuring, August 24-28, Santorini, Greece. Improving Pacific Inter-tie Stability Using

    E-Print Network [OSTI]

    Venkatasubramanian, Mani V.

    @eecs.wsu.edu Transmission Operations and Planning Bonneville Power Administration Vancouver, WA 98666-0491 Abstract (WSU), Pullman in a project funded by Bonneville Power Administration (BPA). The pro- ject has been of existing SVC's, and TCSC owned by Bonneville Power Administra- tion. The new controls are primarily aimed

  1. Transport Infrastructure and the Environment: Sustainable Mobility and Urbanism

    E-Print Network [OSTI]

    Cervero, Robert

    2013-01-01

    the Environment: Sustainable Mobility and Urbanism Robertthe Environment: Sustainable Mobility and Urbanism RobertGlobal South on more sustainable mobility and urbanization

  2. Lightweight social communication using visual media and mobile phones

    E-Print Network [OSTI]

    Cowan, Lisa G.

    2011-01-01

    projected displays of mobile devices. Proc. INTERACT, pagestouch: A see-through mobile device. In Proceedings of theusing visual media and mobile devices. We considered the

  3. Mobile Transit Trip Planning with Real-Time Data

    E-Print Network [OSTI]

    Jariyasunant, Jerald; Work, Daniel B.; Kerkez, Branko; Sengupta, Raja; Glaser, Steven; Bayen, Alexandre

    2011-01-01

    using gps enabled mobile devices. 47th IEEE Conference ontrip planner (TTP) for mobile devices called Transitr, andsystem accessible on mobile devices de- signed to use this

  4. Support Mobile and Distributed Applications with Named Data Networking

    E-Print Network [OSTI]

    Zhu, Zhenkai

    2013-01-01

    protocols for PDAs and mobile devices. ” IEEE Network, 16(does offer users and mobile devices more flexibility andawareness in the mobile devices (and thus the legacy devices

  5. AMF ARM Mobile FAcility

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach HomeA Better Anode Design to Improve4AJ01) (See Energy Level79AJ01)19^560AMERICA'S NATIONAL LABS by 50 50

  6. PASSIVE CONTROL OF PARTICLE DISPERSION IN A PARTICLE-LADEN CIRCULAR JET USING ELLIPTIC CO-ANNULAR FLOW: A MEANS FOR IMPROVING UTILIZATION AND EMISSION REDUCTIONS IN PULVERIZED COAL BURNER

    SciTech Connect (OSTI)

    Ahsan R. Choudhuri

    2003-06-01

    A passive control technology utilizing elliptic co-flow to control the particle flinging and particle dispersion in a particle (coal)-laden flow was investigated using experimental and numerical techniques. Preferential concentration of particles occurs in particle-laden jets used in pulverized coal burner and causes uncontrollable NO{sub x} formation due to inhomogeneous local stoichiometry. This particular project was aimed at characterizing the near-field flow behavior of elliptic coaxial jets. The knowledge gained from the project will serve as the basis of further investigation on fluid-particle interactions in an asymmetric coaxial jet flow-field and thus is important to improve the design of pulverized coal burners where non-homogeneity of particle concentration causes increased NO{sub x} formation.

  7. Battery Aware Stochastic QoS Boosting in Mobile Computing Devices Hao Shen, Qiuwen Chen and Qinru Qiu

    E-Print Network [OSTI]

    Qiu, Qinru

    Battery Aware Stochastic QoS Boosting in Mobile Computing Devices Hao Shen, Qiuwen Chen and Qinru the quality of service (QoS) provided by the mobile device (i.e., smartphone), while keep the risk of battery validate that, compared to existing battery energy management techniques, the stochastic control performs

  8. Corps Improvement 

    E-Print Network [OSTI]

    Wythe, Kathy

    2007-01-01

    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... flood damage; improve navigation channels and harbors; protect wetlands; and preserve, safeguard and enhance the environment. The Corps has been involved in the Trinity River Basin for more than 50 years, but the impetus for the current projects...

  9. MOBILITY, AUTONOMY, AND SENSING FOR MOBILE RADARS IN POLAR ENVIRONMENTS

    E-Print Network [OSTI]

    Kansas, University of

    platform. This report is organized into five sections: snowmobile versus CMU Nomad, sensors, laser range. It is necessary to determine feasibility of the snowmobile as a mobile robotics platform, and to expose any unseen of a small car. It's height is also 2.4 meters, but this is relatively unimportant for our considerations

  10. Characterizing User Mobility in Wireless Networks

    E-Print Network [OSTI]

    Nunes, Bruno Astuto Arouche

    2012-01-01

    Symmetry of User Mobility in Wireless Networks 3.1 MobilityAnalysis of a local-area wireless network. In ACM MOBI- COMand evaluation of wireless networks and their protocols.

  11. Communication Paradigms for Mobile Ad Hoc Networks

    E-Print Network [OSTI]

    Collins, Justin Scott

    2014-01-01

    Mur06] Amy L. Murphy et al. “Lime: A Coordination Middlewareof mobile devices using the LIME II tuple-space framework. ”Bogdan Carbunar and et al. “Lime revisited. ” In Mobile

  12. Ecotransology : integrated design for urban mobility

    E-Print Network [OSTI]

    Joachim, Mitchell Whitney

    2006-01-01

    This thesis demonstrates a rethinking of urban mobility through ecological design. Human mobility and ecological accountability are inextricably linked in city design; our current world ecological crisis underscores this ...

  13. Supply chain for mobile network operator

    E-Print Network [OSTI]

    Liu, Kenneth Lap Chi

    2010-01-01

    The purpose of this study is to understand and get insights on the characteristics of mobile device supply chain management for mobile networks operators. The relationship between corporate strategy and supply chain strategy ...

  14. Innovative Mobile Technologies for Asset Tracking 

    E-Print Network [OSTI]

    Liko, W.

    2013-01-01

    - Innovative Mobile Technologies for Asset Tracking Agenda ? Learn how clients have mobilized their enterprise data to increase the consistent capture and reporting of important building information, from lease data to work orders to space & occupancy...

  15. Sinch : searching intelligently on a mobile device

    E-Print Network [OSTI]

    Nayak, Rajeev (Rajeev R.)

    2010-01-01

    Sinch is an application that allows mobile device users to obtain answers to their questions without having to perform a web search in their mobile browser. Questions are answered by human beings using Mechanical Turk, an ...

  16. On Data Caching for Mobile Clouds 

    E-Print Network [OSTI]

    Feng, Ying

    2014-04-30

    Recent advances in smart device technologies have enabled a new computing paradigm in which large amounts of data are stored and processed on mobile devices. Despite the available powerful hardware, the actual capabilities of mobile devices...

  17. A taxonomy and business analysis for mobile web applications

    E-Print Network [OSTI]

    Liu, Kevin H

    2009-01-01

    Mobile web applications refer to web applications on mobile devices, aimed at personalizing, integrating, and discovering mobile contents in user contexts. This thesis presents a comprehensive study of mobile web applications ...

  18. Operations Manual MobileRobots Exclusive

    E-Print Network [OSTI]

    BotTM, PowerBotTM, PatrolBotTM, ARCSinsideTM, SetNetGoTM, MobilePlannerTM, MobileSimTM and MobileEyesTM are trademarks of MobileRobots Inc. Other names and logos for companies and products mentioned or featured in this document are often registered trademarks or trademarks of their respective companies. Mention of any third

  19. Sensor Relocation with Mobile Sensors:Sensor Relocation with Mobile Sensors: Design,Design,

    E-Print Network [OSTI]

    Schindelhauer, Christian

    Sensor Relocation with Mobile Sensors:Sensor Relocation with Mobile Sensors: Design,Design, Implementation, and EvaluationImplementation, and Evaluation Jie Teng, Tim Bolbrock, Guohong Cao, and Tom La of Freiburg #12;OverviewOverview · Sensor networks · mobile sensor · mobile robot · Mote · sensor relocation

  20. Mobile MapReduce: Minimizing Response Time of Computing Intensive Mobile Applications

    E-Print Network [OSTI]

    Chen, Songqing

    from traditional mobile devices (e.g., cellphones) that are mainly used for voice communication, mobile devices today are typically equipped with much more powerful processor and more sensors. Such increasing power of mobile devices has enabled fast development of mobile applications, such as picture editing

  1. Can Mobile-to-Mobile Browser Cache Cooperation Reduce Energy Consumption of

    E-Print Network [OSTI]

    New South Wales, University of

    Can Mobile-to-Mobile Browser Cache Cooperation Reduce Energy Consumption of Internet Access? Abdul find that short-range cache cooperation can reduce 3G browsing energy consumption by 13%. Finally, we for determining the energy performance of mobile- to-mobile cooperative caching schemes. However, to the best

  2. Supporting Mobile Service Usage through Physical Mobile Interaction Gregor Broll1

    E-Print Network [OSTI]

    and the interaction with them are still restricted by the constraints of mobile devices. In order to facilitate Service technology and Physical Mobile Interaction. This interaction paradigm uses mobile devices and established as in Desktop Computing. Despite the technical progress in Mobile Computing, most of its devices

  3. Dynamic Agents Command and Control System (DACCS) 

    E-Print Network [OSTI]

    Fitzgerald, John J

    2007-01-01

    the movement of MSA compliant mobile devices, such as cell phones, and dynamically display the device locations on maps in real time. It is intended for use in command and dispatch type applications such as controlling mobile resources in the deployment...

  4. Mobile sensor network to monitor wastewater collection pipelines

    E-Print Network [OSTI]

    Lim, Jungsoo

    2012-01-01

    Advanced pipeline monitoringDesign of mobile pipeline floating sensor “SewerSnortIllustration of mobile pipeline floating sensor monitoring

  5. Transport Infrastructure and the Environment: Sustainable Mobility and Urbanism

    E-Print Network [OSTI]

    Cervero, Robert

    2013-01-01

    ideas for advancing sustainable urbanism and mobility willand sustainable transport and urbanism everywhere --the Environment: Sustainable Mobility and Urbanism Robert

  6. Mobile Alternative Fueling Station Locator

    SciTech Connect (OSTI)

    Not Available

    2009-04-01

    The Department of Energy's Alternative Fueling Station Locator is available on-the-go via cell phones, BlackBerrys, or other personal handheld devices. The mobile locator allows users to find the five closest biodiesel, electricity, E85, hydrogen, natural gas, and propane fueling sites using Google technology.

  7. Software Models for Mobile Wireless Evaggelia Pitoura

    E-Print Network [OSTI]

    Pitoura, Evaggelia

    with a given cost and level of technology ) mobile elements with less resources (e.g., memory, screen size' & $ % Software Models for Mobile Wireless Computing Evaggelia Pitoura Computer Science Department #12; ' & $ % Introduction Restrictions [25, 7, 10, 2]: Mobility ffl System configuration is no longer

  8. Mobile Communities Requirements and Features for Success

    E-Print Network [OSTI]

    for mobile devices have to cope with their constraints regarding technology and usability (e.g. short battery.broll@ifi.lmu.de Philipp Lehmann Burda Wireless GmbH philipp.lehmann@burda.com ABSTRACT Advancements in mobile technologies and decreasing charges are starting to leverage the mobile usage of the internet and its applications. This paper

  9. Community-Aware Mobile Networking Michael Kuhn

    E-Print Network [OSTI]

    . Not surprisingly, similar applications have started to enter the ever growing market of mobile devices. More in order to find an exact match in the vicinity of the device. We believe that community-supporting mobile pattern of mobile devices, which in contrast to the wired world is not place and time, but event

  10. Improving Stormwater Quality 

    E-Print Network [OSTI]

    Garcia, Raul

    2005-01-01

    stream_source_info Improving Stormwater Quality.pdf.txt stream_content_type text/plain stream_size 5574 Content-Encoding ISO-8859-1 stream_name Improving Stormwater Quality.pdf.txt Content-Type text/plain; charset=ISO-8859...-1 Stormwater QualityStory by Raul L. Garcia tx H2O | pg. 18 The City of Houston, Harris County, theHarris County Flood Control District and the Texas Department of Transportation have teamed up through a Joint Task Force (JTF) to address Houston...

  11. FINAL REPORT ON CONTROL ALGORITHM TO IMPROVE THE PARTIAL-LOAD EFFICIENCY OFSURFACE PM MACHINES WITH FRACTIONAL-SLOT CONCENTRATED WINDINGS

    SciTech Connect (OSTI)

    Reddy, P.B.; Jahns, T.M.

    2007-04-30

    Surface permanent magnet (SPM) synchronous machines using fractional-slot concentrated windings are being investigated as candidates for high-performance traction machines for automotive electric propulsion systems. It has been shown analytically and experimentally that such designs can achieve very wide constant-power speed ratios (CPSR) [1,2]. This work has shown that machines of this type are capable of achieving very low cogging torque amplitudes as well as significantly increasing the machine power density [3-5] compared to SPM machines using conventional distributed windings. High efficiency can be achieved in this class of SPM machine by making special efforts to suppress the eddy-current losses in the magnets [6-8], accompanied by efforts to minimize the iron losses in the rotor and stator cores. Considerable attention has traditionally been devoted to maximizing the full-load efficiency of traction machines at their rated operating points and along their maximum-power vs. speed envelopes for higher speeds [9,10]. For example, on-line control approaches have been presented for maximizing the full-load efficiency of PM synchronous machines, including the use of negative d-axis stator current to reduce the core losses [11,12]. However, another important performance specification for electric traction applications is the machine's efficiency at partial loads. Partial-load efficiency is particularly important if the target traction application requires long periods of cruising operation at light loads that are significantly lower than the maximum drive capabilities. While the design of the machine itself is clearly important, investigation has shown that this is a case where the choice of the control algorithm plays a critical role in determining the maximum partial-load efficiency that the machine actually achieves in the traction drive system. There is no evidence that this important topic has been addressed for this type of SPM machine by any other authors. This topic takes on even greater significance for fractional-slot concentrated-winding SPM machine designs. In particular, maximizing the torque/power density of this class of SPM machines typically leads to machine designs with high numbers of poles. The resulting high electrical frequencies can easily result in high stator core losses unless special care is taken during the machine design process. The purpose of this report is to discuss a modified vector control algorithm for a fractional-slot concentrated winding SPM machine that has been developed to maximize the machine's partial-load efficiency over a wide range of operating conditions. For purposes of this discussion, a 55 kW (peak) SPM machine designed to meet requirements established in the US FreedomCar program [13] is used as the basis for demonstrating the proposed technique. A combination of closed-form analysis [14] and finite element analysis (FEA) is used during this investigation.

  12. Final Report on Control Algorithm to Improve the Partial-Load Efficiency of Surface PM Machines with Fractional-Slot Concentrated Windings

    SciTech Connect (OSTI)

    McKeever, John W; Reddy, Patel; Jahns, Thomas M

    2007-05-01

    Surface permanent magnet (SPM) synchronous machines using fractional-slot concentrated windings are being investigated as candidates for high-performance traction machines for automotive electric propulsion systems. It has been shown analytically and experimentally that such designs can achieve very wide constant-power speed ratios (CPSR) [1,2]. This work has shown that machines of this type are capable of achieving very low cogging torque amplitudes as well as significantly increasing the machine power density [3-5] compared to SPM machines using conventional distributed windings. High efficiency can be achieved in this class of SPM machine by making special efforts to suppress the eddy-current losses in the magnets [6-8], accompanied by efforts to minimize the iron losses in the rotor and stator cores. Considerable attention has traditionally been devoted to maximizing the full-load efficiency of traction machines at their rated operating points and along their maximum-power vs. speed envelopes for higher speeds [9,10]. For example, on-line control approaches have been presented for maximizing the full-load efficiency of PM synchronous machines, including the use of negative d-axis stator current to reduce the core losses [11,12]. However, another important performance specification for electric traction applications is the machine's efficiency at partial loads. Partial-load efficiency is particularly important if the target traction application requires long periods of cruising operation at light loads that are significantly lower than the maximum drive capabilities. While the design of the machine itself is clearly important, investigation has shown that this is a case where the choice of the control algorithm plays a critical role in determining the maximum partial-load efficiency that the machine actually achieves in the traction drive system. There is no evidence that this important topic has been addressed for this type of SPM machine by any other authors. This topic takes on even greater significance for fractional-slot concentrated-winding SPM machine designs. In particular, maximizing the torque/power density of this class of SPM machines typically leads to machine designs with high numbers of poles. The resulting high electrical frequencies can easily result in high stator core losses unless special care is taken during the machine design process. The purpose of this report is to discuss a modified vector control algorithm for a fractional-slot concentrated winding SPM machine that has been developed to maximize the machine's partial-load efficiency over a wide range of operating conditions. For purposes of this discussion, a 55 kW (peak) SPM machine designed to meet requirements established in the US FreedomCar program [13] is used as the basis for demonstrating the proposed technique. A combination of closed-form analysis [14] and finite element analysis (FEA) is used during this investigation.

  13. Reaction-based fluorescent sensor for investigating mobile Zn[superscript 2+] in mitochondria of healthy versus cancerous prostate cells

    E-Print Network [OSTI]

    Chyan, Wen

    Chelatable, mobile forms of divalent zinc, Zn(II), play essential signaling roles in mammalian biology. A complex network of zinc import and transport proteins has evolved to control zinc concentration and distribution on ...

  14. T-Mobile and Nokia collaborate to open up an integrated marketplace for mobile content and Internet services

    E-Print Network [OSTI]

    Deutschmann, Rainer

    Deutschmann, Senior Vice President, Mobile Internet at T-Mobile International. "Nokia Series 40 devices offerT-Mobile and Nokia collaborate to open up an integrated marketplace for mobile content and Internet and other content offered by both T-Mobile's widget gallery and Nokia's Ovi Store · Through T-Mobile's web

  15. Improving the mechanical properties of Zr-based bulk metallic glass by controlling the activation energy for ?-relaxation through plastic deformation

    SciTech Connect (OSTI)

    Adachi, Nozomu; Todaka, Yoshikazu, E-mail: todaka@me.tut.ac.jp; Umemoto, Minoru [Department of Mechanical Engineering, Toyohashi University of Technology, 1-1 Hibarigaoka, Tempaku, Toyohashi, Aichi 441-8580 (Japan); Yokoyama, Yoshihiko [Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi 980-8577 (Japan)

    2014-09-29

    The mechanism of plastic deformation in bulk metallic glasses (BMGs) is widely believed to be based on a shear transformation zone (STZ). This model assumes that a shear-induced atomic rearrangement occurs at local clusters that are a few to hundreds of atoms in size. It was recently postulated that the potential energy barrier for STZ activation, W{sub STZ}, calculated using the cooperative shear model, is equivalent to the activation energy for ?-relaxation, E{sub ?}. This result suggested that the fundamental process for STZ activation is the mechanically activated ?-relaxation. Since the E{sub ?} value and the glass transition temperature T{sub g} of BMGs have a linear relation, that is, because E{sub ?}???26RT{sub g}, the composition of the BMG determines the ease with which the STZ can be activated. Enthalpy relaxation experiments revealed that the BMG Zr{sub 50}Cu{sub 40}Al{sub 10} when deformed by high-pressure torsion (HPT) has a lower E{sub ?} of 101?kJ/mol. The HPT-processed samples accordingly exhibited tensile plastic elongation (0.34%) and marked decreases in their yield strength (330?MPa). These results suggest that mechanically induced structural defects (i.e., the free volume and the anti-free volume) effectively act to reduce W{sub STZ} and increase the number of STZs activated during tensile testing to accommodate the plastic strain without requiring a change in the composition of the BMG. Thus, this study shows quantitatively that mechanically induced structural defects can overcome the compositional limitations of E{sub ?} (or W{sub STZ}) and result in improvements in the mechanical properties of the BMG.

  16. LDRD final report on synthesis of shape-and size-controlled platinum and platinum alloy nanostructures on carbon with improved durability.

    SciTech Connect (OSTI)

    Shelnutt, John Allen; Garcia, Robert M.; Song, Yujiang; Moreno, Andres M.; Stanis, Ronald J.

    2008-10-01

    This project is aimed to gain added durability by supporting ripening-resistant dendritic platinum and/or platinum-based alloy nanostructures on carbon. We have developed a new synthetic approach suitable for directly supporting dendritic nanostructures on VXC-72 carbon black (CB), single-walled carbon nanotubes (SWCNTs), and multi-walled carbon nanotubes (MWCNTs). The key of the synthesis is to creating a unique supporting/confining reaction environment by incorporating carbon within lipid bilayer relying on a hydrophobic-hydrophobic interaction. In order to realize size uniformity control over the supported dendritic nanostructures, a fast photocatalytic seeding method based on tin(IV) porphyrins (SnP) developed at Sandia was applied to the synthesis by using SnP-containing liposomes under tungsten light irradiation. For concept approval, one created dendritic platinum nanostructure supported on CB was fabricated into membrane electrode assemblies (MEAs) for durability examination via potential cycling. It appears that carbon supporting is essentially beneficial to an enhanced durability according to our preliminary results.

  17. PM2PLS: An Integration of Proxy Mobile IPv6 and MPLS

    E-Print Network [OSTI]

    Astudillo, Carlos A; Ortiz, Jesús H

    2011-01-01

    This paper proposes a handover scheme supporting Multi-Protocol Label Switching (MPLS) in a Proxy Mobile IPv6 (PMIPv6) domain that improves the mobility and gives Quality of Service (QoS) and Traffic Engineering (TE) capabilities in wireless access networks. The proposed scheme takes advantages of both PMIPv6 and MPLS. PMIPv6 was designed to provide NETwork-based Localized Mobility Management (NETLMM) support to a Mobile Node (MN); therefore, the MN does not perform any mobility related signaling, while MPLS is used as an alternative tunneling technology between the Mobile Access Gateway (MAG) and the Local Mobility Anchor (LMA) replacing the IP-in-IP tunnels with Label Switched Path (LSP) tunnels. It can also be integrated with other QoS architectures such as Differentiated Services (DiffServ) and/or Integrated Services (IntServ). In this study, we used MATLAB to perform an analysis to evaluate the impact of introducing MPLS technology in PMIPv6 domain based on handover latency, operational overhead and pack...

  18. Bubble Size Control to Improve Oxygen-Based Bleaching: Characterization of Flow Regimes in Pulp-Water-Gas Three-Phase Flows

    SciTech Connect (OSTI)

    S.M. Ghiaasiaan and Seppo Karrila

    2006-03-20

    Flow characteristics of fibrous paper pulp-water-air slurries were investigated in a vertical circular column 1.8 m long, with 5.08 cm diameter. Flow structures, gas holdup (void fraction), and the geometric and population characteristics of gas bubbles were experimentally investigated, using visual observation, Gamma-ray densitometry, and flash X-ray photography. Five distinct flow regimes could be visually identified: dispersed bubbly, layered bubbly, plug, churn-turbulent, and slug. Flow regime maps were constructed, and the regime transition lines were found to be sensitive to consistency. The feasibility of using artificial neural networks (ANNs) for the identification of the flow regimes, using the statistical characteristics of pressure fluctuations measured by a single pressure sensor, was demonstrated. Local pressure fluctuations at a station were recorded with a minimally-intrusive transducer. Three-layer, feed-forward ANNs were designed that could identify the four major flow patterns (bubbly, plug, churn, and slug) well. The feasibility of a transportable artificial neural network (ANN) - based technique for the classification of flow regimes was also examined. Local pressures were recorded at three different locations using three independent but similar transducers. An ANN was designed, trained and successfully tested for the classification of the flow regimes using one of the normalized pressure signals (from Sensor 1). The ANN trained and tested for Sensor 1 predicted the flow regimes reasonably well when applied directly to the other two sensors, indicating a good deal of transportability. An ANN-based method was also developed, whereby the power spectrum density characteristics of other sensors were adjusted before they were used as input to the ANN that was based on Sensor 1 alone. The method improved the predictions. The gas-liquid interfacial surface area concentration was also measured in the study. The gas absorption technique was applied, using CO2 as the transferred species and sodium hydroxide as the alkaline agent in water. Statistical analysis was performed to identify the parametric dependencies. The experimental data were empirically correlated.

  19. Energy and environmental aspects of mobile communication systems

    E-Print Network [OSTI]

    Lubritto, C; Vetromile, C; Curcuruto, S; Logorelli, M; Marsico, G; D'Onofrio, A; 10.1016/j.energy.2010.11.039

    2011-01-01

    The reduction of the energy consumptions of a Telecommunication Power System represents one of the critical factors of the telecommunication technologies, both to allow a sizeable saving of economic resources and to realize "sustainable" development actions. The consumption of about one hundred base stations for mobile phones were monitored for a total of over one thousand days, in order to study the energy consumption in relation to the environmental, electric and logistics parameters of the stations themselves. It was possible to survey, then, the role of the mobile communication systems in the general national energy framework and to plot the best areas of intervention for saving energy and improving the environmental impact, showing the role played by air conditioning and transmission equipments. Finally, new transmission algorithms and the use of renewable energy based techniques have been tested.

  20. Exploiting Idle Communication Power to Improve Wireless Network Performance and Energy Efficiency

    E-Print Network [OSTI]

    Chen, Songqing

    low and high channel rate stations. I. INTRODUCTION Mobile devices are usually driven by battery power, which we call the idle communication power of a station. In addition to battery power, mobile devicesExploiting Idle Communication Power to Improve Wireless Network Performance and Energy Efficiency

  1. Exploiting Idle Communication Power to Improve Wireless Network Performance and Energy Efficiency

    E-Print Network [OSTI]

    Wang, Haining

    rate stations. I. INTRODUCTION Mobile devices are usually driven by battery power. Due to limited communication power of a station. In addition to battery power, mobile devices are very sus- ceptibleExploiting Idle Communication Power to Improve Wireless Network Performance and Energy Efficiency

  2. Mobile phone and my health

    SciTech Connect (OSTI)

    Surducan, Aneta [Nicolae Balcescu High School, 6 Constanta St., 400158 Cluj-Napoca (Romania)] [Nicolae Balcescu High School, 6 Constanta St., 400158 Cluj-Napoca (Romania); Dabala, Dana [National Railways Medical Clinic,, Occupational Medicine Department, 16-20 Republicii St., 400015 Cluj-Napoca (Romania)] [National Railways Medical Clinic,, Occupational Medicine Department, 16-20 Republicii St., 400015 Cluj-Napoca (Romania); Neamtu, Camelia, E-mail: emanoil.surducan@itim-cj.ro; Surducan, Vasile, E-mail: emanoil.surducan@itim-cj.ro; Surducan, Emanoil, E-mail: emanoil.surducan@itim-cj.ro [National Institute for Research and Development of Isotopic and Molecular Technologies, 65-103 Donath St., 400293 Cluj-Napoca (Romania)] [National Institute for Research and Development of Isotopic and Molecular Technologies, 65-103 Donath St., 400293 Cluj-Napoca (Romania)

    2013-11-13

    The interaction of the microwave radiation emitted by mobile phones with the user's body is analyzed from the International Commission on Non-Ionizing Radiation Protection (ICNIRP) recommendations perspective as a correlation between the specific absorption ratio (SAR) of the mobile phone and the call duration. The relative position of the cell phone to the user's body, the dielectric properties of the exposed body parts, the SAR value and the call duration are considered in the local body temperature rise due to the microwave heating effect. The recommended local temperature rise limit in the human body is evaluated according to standards. The aim of this study is to disseminate information to young people, especially high school students, about the microwave thermal effects on the human body, to make them aware of the environmental electromagnetic pollution and to offer them a simple method of biological self protection.

  3. Extraction Steam Controls at EPLA-W 

    E-Print Network [OSTI]

    Brinker, J. L.

    2004-01-01

    ExxonMobil's Baton Rouge site encompasses a world-scale refinery, chemical plant and third party power station. Historically, inflexible and unreliable control systems on two high-pressure, extracting/condensing steam turbines prevented the site...

  4. Behavioral Energy Management: Improving Conservation Behavior and Attitudes with Operant Conditioning 

    E-Print Network [OSTI]

    Eibes, T.; Jedlicka, A.

    1985-01-01

    Energy management programs, since their initially glory days, have continued to show “slippage” in their overall effectiveness. The authors discuss behavioral science based ways by which conservation programs can improve effectiveness by mobilizing...

  5. Mobile Homophily and Social Location Prediction

    E-Print Network [OSTI]

    Bapierre, Halgurt; Groh, Georg

    2015-01-01

    The mobility behavior of human beings is predictable to a varying degree e.g. depending on the traits of their personality such as the trait extraversion - introversion: the mobility of introvert users may be more dominated by routines and habitual movement patterns, resulting in a more predictable mobility behavior on the basis of their own location history while, in contrast, extrovert users get about a lot and are explorative by nature, which may hamper the prediction of their mobility. However, socially more active and extrovert users meet more people and share information, experiences, believes, thoughts etc. with others. which in turn leads to a high interdependency between their mobility and social lives. Using a large LBSN dataset, his paper investigates the interdependency between human mobility and social proximity, the influence of social networks on enhancing location prediction of an individual and the transmission of social trends/influences within social networks.

  6. Planet-scale Human Mobility Measurement

    E-Print Network [OSTI]

    Pan Hui; Richard Mortier; Tristan Henderson; Jon Crowcroft

    2009-09-18

    Research into, and design and construction of mobile systems and algorithms requires access to large-scale mobility data. Unfortunately, the wireless and mobile research community lacks such data. For instance, the largest available human contact traces contain only 100 nodes with very sparse connectivity, limited by experimental logistics. In this paper we pose a challenge to the community: how can we collect mobility data from billions of human participants? We re-assert the importance of large-scale datasets in communication network design, and claim that this could impact fundamental studies in other academic disciplines. In effect, we argue that planet-scale mobility measurements can help to save the world. For example, through understanding large-scale human mobility, we can track and model and contain the spread of epidemics of various kinds.

  7. English language learners' reading self-efficacy and achievement using 1:1 mobile learning devices

    E-Print Network [OSTI]

    Walters, Jennifer L.

    2012-01-01

    when mobile learning devices and mobile learning tasks areinteraction with mobile devices and services. SpringerTechnology Learning Devices Mobile learning devices afford

  8. Designing mobile digital library services for pre-engineering and technology literacy

    E-Print Network [OSTI]

    2007-01-01

    resources for mobile devices and mobile infrastructure todestinations. Software and mobile devices do have a smalldigital resources and mobile devices may not play a key role

  9. Mobilizing the Cloud: Enabling Multi-User Mobile Outsourcing in the Cloud Technical Report

    E-Print Network [OSTI]

    Weissman, Jon

    , resource-intensive applications. Mobile computation outsourcing to external resources has been proposed mobile application outsourcing platform, leveraging the cloud for scalability, elasticity, and multi, current battery technology can only support limited computational power in such a portable and lightweight

  10. Improved aethalometer

    DOE Patents [OSTI]

    Hansen, A.D.

    1988-01-25

    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. Exploring Music Collections on Mobile Devices. Olga Goussevskaia

    E-Print Network [OSTI]

    Exploring Music Collections on Mobile Devices. Olga Goussevskaia Computer Engineering and Networks exploration and retrieval on mobile devices. We present Mobile Music Explorer--a mobile application, which. INTRODUCTION Mobile phones have been turning into multi-purpose en- tertaining devices with increasing storage

  12. Privacy Vulnerability of Published Anonymous Mobility Traces

    E-Print Network [OSTI]

    2010-07-07

    Sep 20, 2010 ... urban sensing, where mobile nodes carried by ordinary city residents or ... of interest in their city areas. ... held devices including smart phones.

  13. Google Archives by Fiscal Year — Mobile Site

    Broader source: Energy.gov [DOE]

    From the EERE Web Statistics Archive: Corporate sites, retired Google Analytics profile for the Mobile site for fiscal year 2012-13.

  14. Running Greener: E-Mobility at SAP

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

    CO 2 neutral Reduce consumption of fossil fuels and noise Environmental Mobility Unique battery subsidy as benefit Enjoy free charging exclusively at SAP's charging spots...

  15. Mobility changes anonymity: new passive threats in mobile ad hoc networks

    E-Print Network [OSTI]

    Hong, Xiaoyan; Kong, Jiejun; Gerla, Mario

    2006-01-01

    delay on most portable mobile devices. D. Anonymity study inmobile nodes and prepare the counterattacks. The needed eavesdropping devices,

  16. Development of a maldi ? ion mobility? surface-induced dissociation ? time-of-flight mass spectrometer with novel collision source configurations for high throughput peptide sequencing 

    E-Print Network [OSTI]

    Sun, Wenjian

    2009-05-15

    A Matrix-assisted Laser Desorption/Ionization (MALDI) – Ion Mobility (IM) – Surface-induced Dissociation (SID) – Time-of-Flight (TOF) instrument with three different collision source configurations was developed in order to improve the SID...

  17. Comparison of the Accuracy and Speed of Transient Mobile A/C System Simulation Models: Preprint

    SciTech Connect (OSTI)

    Kiss, T.; Lustbader, J.

    2014-03-01

    The operation of air conditioning (A/C) systems is a significant contributor to the total amount of fuel used by light- and heavy-duty vehicles. Therefore, continued improvement of the efficiency of these mobile A/C systems is important. Numerical simulation has been used to reduce the system development time and to improve the electronic controls, but numerical models that include highly detailed physics run slower than desired for carrying out vehicle-focused drive cycle-based system optimization. Therefore, faster models are needed even if some accuracy is sacrificed. In this study, a validated model with highly detailed physics, the 'Fully-Detailed' model, and two models with different levels of simplification, the 'Quasi-Transient' and the 'Mapped- Component' models, are compared. The Quasi-Transient model applies some simplifications compared to the Fully-Detailed model to allow faster model execution speeds. The Mapped-Component model is similar to the Quasi-Transient model except instead of detailed flow and heat transfer calculations in the heat exchangers, it uses lookup tables created with the Quasi-Transient model. All three models are set up to represent the same physical A/C system and the same electronic controls. Speed and results of the three model versions are compared for steady state and transient operation. Steady state simulated data are also compared to measured data. The results show that the Quasi-Transient and Mapped-Component models ran much faster than the Fully-Detailed model, on the order of 10- and 100-fold, respectively. They also adequately approach the results of the Fully-Detailed model for steady-state operation, and for drive cycle-based efficiency predictions

  18. Combining Customer Attribute and Social Network Mining for Prepaid Mobile Churn Prediction

    E-Print Network [OSTI]

    Putten, Peter van der

    Combining Customer Attribute and Social Network Mining for Prepaid Mobile Churn Prediction Palupi D in the prepaid segment of the telecommunication industry. This paper investigates the extent to which social net to improve churn prediction accuracy in the prepaid seg- ment. Examples of such features include the number

  19. 1/5/97 page 1 energy A survey of energy saving techniques for mobile

    E-Print Network [OSTI]

    Havinga, Paul J.M.

    . Because these applications are battery powered, reducing power consumption is vital. In this report we in their batteries. Even though battery technology is improving continuously and processors and displays are rapidly1/5/97 page 1 energy A survey of energy saving techniques for mobile computers Gerard J.M. Smit

  20. Prioritized Sequencing for Efficient Query on Broadcast Geographical Information in Mobile-Computing

    E-Print Network [OSTI]

    Gruenwald, Le

    in improving query efficiency in geographical information broadcast systems. We also proved the linearPrioritized Sequencing for Efficient Query on Broadcast Geographical Information in Mobile and efficient way to disseminate public geographical information to massive users. In this paper, we use R

  1. Mechanical accessories for mobile teleoperators

    SciTech Connect (OSTI)

    Feldman, M.J.; Herndon, J.N.

    1985-01-01

    The choice of optimum mechanical accessories for mobile teleoperators involves matching the criteria for emergency response with the available technology. This paper presents a general background to teleoperations, a potpourri of the manipulator systems available, and an argument for force reflecting manipulation. The theme presented is that the accomplishment of humanlike endeavors in hostile environments will be most successful when man model capabilities are utilized. The application of recent electronic technology to manipulator development has made new tools available to be applied to emergency response activities. The development activities described are products of the Consolidated Fuel Reprocessing Program at the Oak Ridge National Laboratory. 13 refs., 7 figs.

  2. Energize Mobile | Open Energy Information

    Open Energy Info (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 QA:QA J-E-1 SECTIONRobertsdale, AlabamaETEC GmbH JumpEllenville, NewLtd EIL Jump to:EnergiegesellschaftEnergize Mobile

  3. Mobile and Physical User Interfaces for NFC-based Mobile Interaction with Multiple Tags

    E-Print Network [OSTI]

    to evaluate the allocation of application features and UI elements to mobile devices and tagged objects lives, its technologies affect the way we access and use information. Mobile devices can be used pictures of visual markers with their mobile devices [2]. Tagged objects like posters, leaflets

  4. Battery Manufacturing Processes Improved by Johnson Controls...

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

    Technologies Office. The project focused on three major aspects of the lithium ion (Li-ion) battery manufacturing process: reducing process time for battery formation and...

  5. How Control Improvements Save Process Heater Fuel 

    E-Print Network [OSTI]

    Dukelow, S. G.

    1979-01-01

    Steam boilers and process heaters are the two primary combustion processes in petrochemical and petroleum refining plants. There are key differences in the evolution of these processes which resulted from the historical cost of fuel per unit...

  6. Recovery Act: Advanced Direct Methanol Fuel Cell for Mobile Computing

    SciTech Connect (OSTI)

    Fletcher, James H.; Cox, Philip; Harrington, William J; Campbell, Joseph L

    2013-09-03

    ABSTRACT Project Title: Recovery Act: Advanced Direct Methanol Fuel Cell for Mobile Computing PROJECT OBJECTIVE The objective of the project was to advance portable fuel cell system technology towards the commercial targets of power density, energy density and lifetime. These targets were laid out in the DOE’s R&D roadmap to develop an advanced direct methanol fuel cell power supply that meets commercial entry requirements. Such a power supply will enable mobile computers to operate non-stop, unplugged from the wall power outlet, by using the high energy density of methanol fuel contained in a replaceable fuel cartridge. Specifically this project focused on balance-of-plant component integration and miniaturization, as well as extensive component, subassembly and integrated system durability and validation testing. This design has resulted in a pre-production power supply design and a prototype that meet the rigorous demands of consumer electronic applications. PROJECT TASKS The proposed work plan was designed to meet the project objectives, which corresponded directly with the objectives outlined in the Funding Opportunity Announcement: To engineer the fuel cell balance-of-plant and packaging to meet the needs of consumer electronic systems, specifically at power levels required for mobile computing. UNF used existing balance-of-plant component technologies developed under its current US Army CERDEC project, as well as a previous DOE project completed by PolyFuel, to further refine them to both miniaturize and integrate their functionality to increase the system power density and energy density. Benefits of UNF’s novel passive water recycling MEA (membrane electrode assembly) and the simplified system architecture it enabled formed the foundation of the design approach. The package design was hardened to address orientation independence, shock, vibration, and environmental requirements. Fuel cartridge and fuel subsystems were improved to ensure effective fuel containment. PROJECT OVERVIEW The University of North Florida (UNF), with project partner the University of Florida, recently completed the Department of Energy (DOE) project entitled “Advanced Direct Methanol Fuel Cell for Mobile Computing”. The primary objective of the project was to advance portable fuel cell system technology towards the commercial targets as laid out in the DOE R&D roadmap by developing a 20-watt, direct methanol fuel cell (DMFC), portable power supply based on the UNF innovative “passive water recovery” MEA. Extensive component, sub-system, and system development and testing was undertaken to meet the rigorous demands of the consumer electronic application. Numerous brassboard (nonpackaged) systems were developed to optimize the integration process and facilitating control algorithm development. The culmination of the development effort was a fully-integrated, DMFC, power supply (referred to as DP4). The project goals were 40 W/kg for specific power, 55 W/l for power density, and 575 Whr/l for energy density. It should be noted that the specific power and power density were for the power section only, and did not include the hybrid battery. The energy density is based on three, 200 ml, fuel cartridges, and also did not include the hybrid battery. The results show that the DP4 system configured without the methanol concentration sensor exceeded all performance goals, achieving 41.5 W/kg for specific power, 55.3 W/l for power density, and 623 Whr/l for energy density. During the project, the DOE revised its technical targets, and the definition of many of these targets, for the portable power application. With this revision, specific power, power density, specific energy (Whr/kg), and energy density are based on the total system, including fuel tank, fuel, and hybridization battery. Fuel capacity is not defined, but the same value is required for all calculations. Test data showed that the DP4 exceeded all 2011 Technical Status values; for example, the DP4 energy density was 373 Whr/l versus the DOE 2011 status of 200 Whr/l. For the

  7. MOBILITIES OF CESIUM AMD RUBIDIUM IONS IN THEIR PARENT VAPORS

    E-Print Network [OSTI]

    Lee, Yuan-tseh; Mahan, Bruce H.

    1965-01-01

    Laboratory MOBILITIES OF CESIUM AND RUBIDIUM IONS IN THEIRen o:-48 t MOBILITIES OF CESIUM AND RUBIDIUM IONS INvTHEIRH. Mahan Mobilities of Cesium and Rubidium Ions in Their

  8. Benefit from Web services in the mobile Internet industry

    E-Print Network [OSTI]

    Ikeda, Daizo, 1974-

    2004-01-01

    Over the past five years, mobile Internet services in Japan have seen major expansion as a result of collaboration between mobile operators acting as mobile portal providers, and their complementors, namely, content ...

  9. A social networking approach for mobile innovation in emerging countries

    E-Print Network [OSTI]

    Yang, Jen-Hao, S.M. Massachusetts Institute of Technology

    2011-01-01

    Addressing the global challenges and the next billion mobile subscribers, the MIT NextLab course engages students, industry partners, entrepreneurs and the next billion mobile subscribers to develop innovative mobile ...

  10. Computerization of an Autonomous Mobile Buoy Adam Stuart Outlaw

    E-Print Network [OSTI]

    Wood, Stephen L.

    Computerization of an Autonomous Mobile Buoy by Adam Stuart Outlaw Bachelor of Science Ocean Computerization of an Autonomous Mobile Buoy by Adam Stuart Outlaw _____________________________________ Stephen L Abstract Title: Computerization of an Autonomous Mobile Buoy Author: Adam Stuart Outlaw Major Advisor

  11. The evolution of mobile industry : modular to integral

    E-Print Network [OSTI]

    Nag, Ipshita

    2011-01-01

    This thesis explores the dynamics of the mobile industry in the US. One in every four Americans owns a smart phone. Smart phones are fuelling the growth of the mobile web and an ecosystem of mobile applications. As innovative ...

  12. Mobile marketing strategies for B2C companies

    E-Print Network [OSTI]

    Sawant, Samir

    2010-01-01

    Mobile application ('apps') development is a recent pandemic phenomenon; companies that are not associated with mobile technologies are noticing it and want to develop their own mobile apps. However, these companies do not ...

  13. Perceptual and Context Aware Interfaces on Mobile Devices

    E-Print Network [OSTI]

    Wang, Jingtao

    2010-01-01

    New Interaction Techniques for Mobile Devices 2.2.3 ComputerApplications on Mobile Devices iv Case Study : The End-Userdesktop computers and mobile devices. Event Maps has been

  14. MOBILE DEVICE LOCATION INFORMATION ACQUISITION FRAMEWORK FOR DEVELOPMENT OF LOCATION

    E-Print Network [OSTI]

    Dustdar, Schahram

    MOBILE DEVICE LOCATION INFORMATION ACQUISITION FRAMEWORK FOR DEVELOPMENT OF LOCATION INFORMATION, 1040 Vienna, Austria dustdar@infosys.tuwien.ac.at Keywords: Mobile device location information, location information based services, location information acquisition. Abstract: Mobile device location

  15. Feasibility of CO2 Capture from Mobile Sources | Department of...

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

    CO2 Capture from Mobile Sources Feasibility of CO2 Capture from Mobile Sources Presents integrated system for post-combustion CO2 capture from mobile sources p-16davis.pdf More...

  16. IEEE TRANSACTIONS ON MOBILE COMPUTING 1 Near-optimal Velocity Control for Mobile

    E-Print Network [OSTI]

    He, Tian

    been proposed and studied extensively over the last few years. In a typical WRSN, batteries in sensor, resonant circuits have been used to enhance the efficiency of power transmission. For example, Nikola Tesla

  17. Information Technology The Mobile Semantic Web

    E-Print Network [OSTI]

    Li, Yuan-Fang

    Information Technology The Mobile Semantic Web Shonali Krishnaswamya & Yuan-Fang Lib a Institute and applications (when needed) - Battery Usage ­ Continuous communication is more expensive on energy usage than capabilities, screen size, battery life §Mobile users require quick feedback §Attention Span approx 15

  18. Mobile Robots for Difficult Measurements in

    E-Print Network [OSTI]

    Siegel, Mel

    Mobile Robots for Difficult Measurements in Difficult Environments: Application to Aging Aircraft aircraft for skin cracks and lap joint delamination. Several robot designs are evaluated; a small mobile robot with suction cup feet is found to be best in the practical context of commercial aircraft

  19. Vibration Perception in Mobile Contexts Idin Karuei

    E-Print Network [OSTI]

    MacLean, Karon

    Vibration Perception in Mobile Contexts Idin Karuei , Zoltan Foley-Fisher , Sebastian Koch ABSTRACT Human sensitivity to vibration declines in mobile contexts. Designers of wearable haptic systems, and found that the thigh is least and the wrists the most sensitive of the sites tested. KEYWORDS:Vibration

  20. OUTLOOK -MOBILE DEVICE ACCESS QUICK REFERENCE GUIDE

    E-Print Network [OSTI]

    Liley, David

    th OUTLOOK - MOBILE DEVICE ACCESS QUICK REFERENCE GUIDE This Quick Reference Guide is designed to step you through the setup of your Outlook email account on your mobile device. When to use this Guide is Outlook. NOTE: After you have set up your account you must remove your old GWSync account ITS

  1. WIRELESS COMMUNICATIONS MOBILE COMPUTING Wirel. Commun. Comput.

    E-Print Network [OSTI]

    Giannakis, Georgios

    and renders reliable high­data­rate transmissions challenging problem. Traditionally, most effective technique­ limiting challenges that include channel fading well power limitations at mobile units. a promising method needed enable reliable transmissions mobile radio channels. Depending Quality­of­Service requirements

  2. Security Architecture for Federated Mobile Cloud Computing

    E-Print Network [OSTI]

    Xu, Shouhuai

    Security Architecture for Federated Mobile Cloud Computing Shouhuai Xu and E. Paul Ratazzi, federated mobile cloud computing imposes a diverse set of new chal- lenges, especially from a security clouds for security purposes? How should we deal with the tar- geted attackers that attempt to launch

  3. The Mobile Web Comes of Age

    E-Print Network [OSTI]

    Chen, Yuanzhu Peter

    The Mobile Web Comes of Age Steven J. Vaughan-Nichols T he mobile Web has changed dramatically can do on the Web, said Stephen O'Grady, cofounder of and analyst with Red- Monk, a market research, such as phones, now have larger screens with better resolution, making Web browsing more worthwhile, noted

  4. Towards Flexible Process Support on Mobile Devices

    E-Print Network [OSTI]

    Ulm, Universität

    and Manfred Reichert Institute for Databases and Information Systems, Ulm University, Germany {ruediger. Mobile application scenar- ios are diverse and encompass domains like healthcare, logistics, and sales in the MARPLE project. MARPLE targets at a tight integration of pro- cess management technology with mobile

  5. City of College Station's Thermographic Mobile Scan 

    E-Print Network [OSTI]

    Shear, C. K.

    1986-01-01

    During the first quarter of 1986, the City of College Station conducted a thermographic mobile scan of the entire city. A thermographic mobile scan is a process by which heat loss/heat gain data is accumulated by a vehicle traveling the city...

  6. Towards implementing the Mobile Transient Internet Architecture

    E-Print Network [OSTI]

    Albuquerque, New Mexico December, 2006 #12;Towards implementing the Mobile Transient Internet ArchitectureTowards implementing the Mobile Transient Internet Architecture by Joud Said Khoury B.E., Lebanese of Master of Science Electrical Engineering The University of New Mexico Albuquerque, New Mexico December

  7. Fundamental Challenges in Mobile Computing M. Satyanarayanan

    E-Print Network [OSTI]

    the official policies or need to be sensitive to power consumption argues for self­ endorsements, either­inclined computers scientists. over time, the need to be sensitive to power consumption will not diminish. Concern for power 1.1. Constraints of Mobility consumption must span many levels of hardware Mobile computing

  8. Using Mobile Applications to Generate Customer Demand | Department...

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

    Using Mobile Applications to Generate Customer Demand Using Mobile Applications to Generate Customer Demand Better Buildings Residential Network Peer Exchange Call Series: Using...

  9. The Fuel Cell Mobile Light Project - A DOE Market Transformation...

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

    Download the presentation slides from the Fuel Cell Technologies Program webinar, "Fuel Cell Mobile Lighting," held on November 13, 2012. Fuel Cell Mobile Lighting Webinar Slides...

  10. How Would You Use Your Mobile Device to Save Energy?

    Broader source: Energy.gov [DOE]

    More and more, people are using their phones and mobile devices to find information -- tell us how you would use your mobile device to save energy.

  11. Creating Mobile Emission Reduction Credits | Department of Energy

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

    Creating Mobile Emission Reduction Credits Creating Mobile Emission Reduction Credits 2002 DEER Conference Presentation: Emission Credit Brokers 2002deersloan.pdf More Documents...

  12. And the Oscar for Sustainable Mobile Lighting Goes to.... Lighting...

    Energy Savers [EERE]

    And the Oscar for Sustainable Mobile Lighting Goes to.... Lighting Up Operations with Hydrogen and Fuel Cell Technology And the Oscar for Sustainable Mobile Lighting Goes to.......

  13. Public Finance Mechanisms to Mobilize Investment in Climate Change...

    Open Energy Info (EERE)

    Public Finance Mechanisms to Mobilize Investment in Climate Change Mitigation Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Public Finance Mechanisms to Mobilize...

  14. Automotive Fuels - The Challenge for Sustainable Mobility | Department...

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

    Fuels - The Challenge for Sustainable Mobility Automotive Fuels - The Challenge for Sustainable Mobility Overview of challenges and future fuel options deer12warnecke.pdf More...

  15. Validating the role of AFVs in voluntary mobile source emission reduction programs.

    SciTech Connect (OSTI)

    Santini, D. J.; Saricks, C. L.

    1999-03-17

    Late in 1997, EPA announced new allowances for voluntary emission control programs. As a result, the US Department of Energy's (DOE) Clean Cities and other metro areas that have made an ongoing commitment to increasing participation by alternative fuel vehicles (AFVs) in local fleets have the opportunity to estimate the magnitude and obtain emission reduction credit for following through on that commitment. Unexpectedly large reductions in key ozone precursor emissions in key locations and times of the day can be achieved per vehicle-mile by selecting specific light duty AFV offerings from original equipment manufacturers (OEMs) in lieu of their gasoline-fueled counterparts. Additional benefit accrues from the fact that evaporative emissions of non-methane hydrocarbons (generated in the case of CNG, LNG, and LPG by closed fuel-system AFV technology) can be essentially negligible. Upstream emissions from fuel storage and distribution with the airshed of interest are also reduced. This paper provides a justification and outlines a method for including AFVs in the mix of strategies to achieve local and regional improvements in ozone air quality, and for quantifying emission reduction credits. At the time of submission of this paper, the method was still under review by the US EPA Office of Mobile Sources, pending mutually satisfactory resolution of several of its key points. Some of these issues are discussed in the paper.

  16. Ion mobility analysis of lipoproteins

    DOE Patents [OSTI]

    Benner, W. Henry (Danville, CA); Krauss, Ronald M. (Berkeley, CA); Blanche, Patricia J. (Berkeley, CA)

    2007-08-21

    A medical diagnostic method and instrumentation system for analyzing noncovalently bonded agglomerated biological particles is described. The method and system comprises: a method of preparation for the biological particles; an electrospray generator; an alpha particle radiation source; a differential mobility analyzer; a particle counter; and data acquisition and analysis means. The medical device is useful for the assessment of human diseases, such as cardiac disease risk and hyperlipidemia, by rapid quantitative analysis of lipoprotein fraction densities. Initially, purification procedures are described to reduce an initial blood sample to an analytical input to the instrument. The measured sizes from the analytical sample are correlated with densities, resulting in a spectrum of lipoprotein densities. The lipoprotein density distribution can then be used to characterize cardiac and other lipid-related health risks.

  17. Secure and Wireless Improving TCP performance over wireless links

    E-Print Network [OSTI]

    Kurose, Jim

    Secure and Wireless Networks Improving TCP performance over wireless links Secure leader election in wireless networks Additional Projects In ter-Ara Rekey ing Al gorithms for mobile networks http analysisofhierarchical, s ubset differencerekeying (joint with Nortel) - hidden Markov model characterization of wireless

  18. SURFACTANT BASED ENHANCED OIL RECOVERY AND FOAM MOBILITY CONTROL

    SciTech Connect (OSTI)

    George J. Hirasaki; Clarence A. Miller; Gary A. Pope; Richard E. Jackson

    2004-02-01

    Surfactant flooding has the potential to significantly increase recovery over that of conventional waterflooding. The availability of a large number of surfactant structures makes it possible to conduct a systematic study of the relation between surfactant structure and its efficacy for oil recovery. Also, the addition of an alkali such as sodium carbonate makes possible in situ generation of surfactant and significant reduction of surfactant adsorption. In addition to reduction of interfacial tension to ultra-low values, surfactants and alkali can be designed to alter wettability to enhance oil recovery. An alkaline surfactant process is designed to enhance spontaneous imbibition in fractured, oil-wet, carbonate formations. It is able to recover oil from dolomite core samples from which there was no oil recovery when placed in formation brine.

  19. Literature Review of Mobility Control Methods for CO2

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

    Literature Review of 40 Years of Research DOENETL-20121540 Prepared by: Robert M. Enick University of Pittsburgh and David K. Olsen IBM Global Business Services National...

  20. Control-Plane Protocol Interactions in Mobile Networks

    E-Print Network [OSTI]

    Tu, Guan-Hua

    2015-01-01

    2004. [Web] “WebKit, Defatult Web Browser in Android. ”developer.android.com/reference/android/webkit/package-iPhone5S. They cover both Android and iOS. All phones are

  1. Design and control of a mobile light ballet platform

    E-Print Network [OSTI]

    Sibblies, Joshua Vincent Prescott

    2014-01-01

    Light ballet is the merging of art and technology; halogen lamps mounted on a turntable are placed inside of an opaque, perforated box. Light escapes through the perforations and creates a display of lights on surrounding ...

  2. Controlling Wild Mobile Robots Using Virtual Gates and Discrete Transitions

    E-Print Network [OSTI]

    LaValle, Steven M.

    sheets, cheap motors, a color sensor, and an Arduino microntroller board (total cost less than $100 US

  3. Inorganic Controls on Neptunium Mobility in the Subsurface

    SciTech Connect (OSTI)

    Burns, Peter

    2014-11-14

    The project final technical report, and a lengthy manuscript under consideration for publication, are included in this report.

  4. Literature Review of Mobility Control Methods for CO2

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

    EOR Methods," SPE 65173, presented at the SPE European Petroleum Conference, held in Paris, France, October 24-25, 2000. Alvarado, V.; Manrique, E.: "Enhanced Oil Recovery: An...

  5. Surfactant Based Enhanced Oil Recovery and Foam Mobility Control

    Office of Scientific and Technical Information (OSTI)

    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 Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefield MunicipalTechnicalInformation FederatedInformation What'sfunction (Journal(Technical

  6. Literature Review of Mobility Control Methods for CO2

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would likeUniverseIMPACTThousand CubicResourcelogo and-E CChinaC L S C O N C E P T U A L D

  7. Mobility in Wireless Sensor Networks

    E-Print Network [OSTI]

    Mehta, Ankur Mukesh

    2012-01-01

    4 Wireless Protocol Modifications 4.1contains a distributed wireless network with per- vasiveprocessing, control, and wireless communication on a board

  8. NeuroPhone: Brain-Mobile Phone Interface using a Wireless EEG Headset

    E-Print Network [OSTI]

    Campbell, Andrew T.

    NeuroPhone: Brain-Mobile Phone Interface using a Wireless EEG Headset Andrew T. Campbell, Tanzeem electroencephalo- graphy (EEG) headsets. We demonstrate a brain-controlled address book dialing app, which works on similar princi- ples to P300-speller brain-computer interfaces: the phone flashes a sequence of photos

  9. Beacon-less mobility assisted energy efficient georouting in energy harvesting actuator and

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    of the energy consumption (for sending data and mov- ing) and the energy harvesting to select next hop. MEGAN controlled mobility, and takes account of the energy consumption and the energy harvesting to select next hop of the forwarder node based on available and needed energy, and then broadcasts this data. Every node within

  10. Including Source-Specific Phosphorus Mobility in a Nonpoint Source Pollution Model

    E-Print Network [OSTI]

    Walter, M.Todd

    pollution; Nonpoint pollution. Introduction In order to protect water quality, watershed managers tasked with implementing strategies for controlling nonpoint source NPS pollution need water quality models that canIncluding Source-Specific Phosphorus Mobility in a Nonpoint Source Pollution Model for Agricultural

  11. WIRELESS COMMUNICATIONS AND MOBILE COMPUTING Wirel. Commun. Mob. Comput. 2006; 6:845864

    E-Print Network [OSTI]

    Zhuang, Weihua

    WIRELESS COMMUNICATIONS AND MOBILE COMPUTING Wirel. Commun. Mob. Comput. 2006; 6:845­864 Published control for wireless mesh networks Ho Ting Cheng, Hai Jiang and Weihua Zhuang*, Department of Electrical and Computer Engineering, Centre for Wireless Communications, University of Waterloo, Waterloo, Ontario, Canada

  12. The SATIN Component System--A Metamodel for Engineering Adaptable Mobile Systems

    E-Print Network [OSTI]

    Mascolo, Cecilia

    devices, such as personal digital assistants and mobile phones, are becoming increasingly popular, smaller device. Such reconfiguration is considerably simplified if mobile applications are component, containers, mobile systems, middleware, pervasive computing, mobile code. Ç 1 INTRODUCTION MOBILE devices

  13. Sensing Techniques for Mobile Interaction Ken Hinckley, Jeff Pierce, Mike Sinclair, Eric Horvitz

    E-Print Network [OSTI]

    Horvitz, Eric

    with handheld devices in mobile settings. Special features of mobile interaction include changing orientation, interaction techniques, sensing, context- awareness, mobile devices, mobile interaction, sensors INTRODUCTION The rapidly growing market for mobile devices such as personal information managers (PIM's: tablet, pocket

  14. Speed Control and Scheduling of Data Mules in Sensor Networks

    E-Print Network [OSTI]

    Gupta, Rajesh

    ., 2 Penn Plaza, Suite 701, New York, NY 10121-0701 USA, fax +1 (212) 869-0481, or permissions. The use of mobility significantly reduces the energy consumption at sensor nodes, elongating;4:2 · R. Sugihara and R. K. Gupta 1. INTRODUCTION Controlled mobility presents an attractive alternative

  15. 942 IEEE/ASME TRANSACTIONS ON MECHATRONICS, VOL. 15, NO. 6, DECEMBER 2010 A Mobile Agent-Based Framework for Flexible

    E-Print Network [OSTI]

    Cheng, Harry H.

    942 IEEE/ASME TRANSACTIONS ON MECHATRONICS, VOL. 15, NO. 6, DECEMBER 2010 A Mobile Agent as high-level control programs and are portable to heterogeneous mechatronic devices that comprise

  16. Reversed-phase chromatographic separation of selected hydroxyl aromatics with. beta. -cyclodextrin as a mobile phase additive

    SciTech Connect (OSTI)

    Mohseni, R.M.; Hurtubise, R.J. (Univ. of Wyoming, Laramie (United States))

    1990-01-01

    The capacity factors and selectively factors of several pairs of hydroxyl aromatics were obtained with a C{sub 18} column with and without {beta}-cyclodextrin in methanol-water mobile phases. In all but one case, the selectivity factors were improved. The hydroxyl aromatics chosen for the study were structurally similar and difficult to separate by reversed-phase chromatography. The relationship between {alpha} values and dissociation constants of the {beta}-cyclodextrin-solute complexes was also considered and an approximate linear relationship was found between two parameters. In general, very substantial improvements were obtained for the separation of hydroxyl aromatics with {beta}-cyclodextrin in the mobile phase.

  17. Research on improved and enhanced oil recovery in Illinois through reservoir characterization

    SciTech Connect (OSTI)

    Oltz, D.F.

    1992-01-01

    This project will provide information that can maximize hydrocarbon production minimize formation damage and stimulate new production in Illinois. Such information includes definition of hydrocarbon resources, characterization of hydrocarbon reservoirs, and the implementation of methods that will improve hydrocarbon extractive technology. Increased understanding of reservoir heterogeneities that affect oil recovery can aid in identifying producible resources. The transfer of technology to industry and the general public is a significant component of the program. The project is designed to examine selected subsurface oil reservoirs in Illinois. Scientists use advanced scientific techniques to gain a better understanding of reservoir components and behavior and address ways of potentially increasing the amount of recoverable oil. Initial production rates for wells in the Illinois Basin commonly decline quite rapidly and as much as 60 percent of the oil in place can be unrecoverable using standard operating procedures. Heterogeneities (geological differences in reservoir make-up) affect a reservoir's capability to release fluids. By-passed mobile and immobile oil remain in the reservoir. To learn how to get more of the oil out of reservoirs, the ISGS is studying the nature of reservoir rock heterogeneities and their control on the distribution and production of by-passed, mobile oil.

  18. Method for enhancing the resolving power of ion mobility separations over a limited mobility range

    DOE Patents [OSTI]

    Shvartsburg, Alexandre A; Tang, Keqi; Smith, Richard D

    2014-09-23

    A method for raising the resolving power, specificity, and peak capacity of conventional ion mobility spectrometry is disclosed. Ions are separated in a dynamic electric field comprising an oscillatory field wave and opposing static field, or at least two counter propagating waves with different parameters (amplitude, profile, frequency, or speed). As the functional dependencies of mean drift velocity on the ion mobility in a wave and static field or in unequal waves differ, only single species is equilibrated while others drift in either direction and are mobility-separated. An ion mobility spectrum over a limited range is then acquired by measuring ion drift times through a fixed distance inside the gas-filled enclosure. The resolving power in the vicinity of equilibrium mobility substantially exceeds that for known traveling-wave or drift-tube IMS separations, with spectra over wider ranges obtainable by stitching multiple segments. The approach also enables low-cutoff, high-cutoff, and bandpass ion mobility filters.

  19. New High Capacity Getter for Vacuum-Insulated Mobile Liquid Hydrogen Storage Systems

    SciTech Connect (OSTI)

    H. Londer; G. R. Myneni; P. Adderley; G. Bartlok; J. Setina; W. Knapp; D. Schleussner

    2006-05-01

    Current ''Non evaporable getters'' (NEGs), based on the principle of metallic surface sorption of gas molecules, are important tools for the improving the performance of many vacuum systems. High porosity alloys or powder mixtures of Zr, Ti, Al, V, Fe and other metals are the base materials for this type of getters. The continuous development of vacuum technologies has created new challenges for the field of getter materials. The main sorption parameters of the current NEGs, namely, pumping speed and sorption capacity, have reached certain upper limits. Chemically active metals are the basis of a new generation of NEGs. The introduction of these new materials with high sorption capacity at room temperature is a long-awaited development. These new materials enable the new generation of NEGs to reach faster pumping speeds, significantly higher sticking rates and sorption capacities up to 104 times higher during their lifetimes. Our development efforts focus on producing these chemically active metals with controlled insulation or protection. The main structural forms of our new getter materials are spherical powders, granules and porous multi-layers. The full pumping performance can take place at room temperature with activation temperatures ranging from room temperature to 650 C. In one of our first pilot projects, our proprietary getter solution was successfully introduced as a getter pump in a double-wall mobile LH2 tank system. Our getters were shown to have very high sorption capacity of all relevant residual gases, including H2. This new concept opens the opportunity for significant vacuum improvements, especially in the field of H2 pumping which is an important task in many different vacuum applications.

  20. Collaborative Mobile Charging for Sensor Networks Sheng Zhang

    E-Print Network [OSTI]

    Wu, Jie

    of wireless energy transfer and rechargeable lithium batteries promise the use of mobile vehicles, with high volume batteries, as mobile chargers that transfer energy to sensor nodes wirelessly. In this paper studies [14­17] employed mobile vehicles of high volume batteries as mobile chargers to deliver energy

  1. A Market-Driven Framework Towards Environmentally Sustainable Mobile Computing

    E-Print Network [OSTI]

    Namboodiri, Vinod

    A Market-Driven Framework Towards Environmentally Sustainable Mobile Computing Siny Joseph Arts role of mobile devices has resulted in recent work advocating environmental sustainability in mobile of mobile computing and communication devices. One "green" approach to meet both the goals of minimizing

  2. Towards Mobile Z Schemas M. Bettaz, M. Maouche

    E-Print Network [OSTI]

    and phrases: Mobile computing, wireless networking, location, portability, mobility, mobility models, Z]. With the advent of mobile computing and wireless networking, the notion of "stable" clients and "stable" servers may or may not act as ad hoc router for the benefit of its neighbors. The case study presented

  3. A Generic Approach to Simplification of Geodata for Mobile Applications

    E-Print Network [OSTI]

    Köbben, Barend

    of the mobile devices and limited display capabilities of the mobile devices. This requires that the amountA Generic Approach to Simplification of Geodata for Mobile Applications Theodor Foersterą, Jantien for mobile applications. However, choosing the best simplification algorithm depends on the correct

  4. Cluestr: Mobile Social Networking for Enhanced Group Communication

    E-Print Network [OSTI]

    the spreading of social software in the mobile domain. Hence, future usage patterns of mobile devices will involve more group interaction. While collaboration using mobile devices is an active area of re- search success. Re- stricted input and output capabilities of mobile devices have Permission to make digital

  5. University Library System Hillman Library Mobile Device Lending Program

    E-Print Network [OSTI]

    Sibille, Etienne

    University Library System ­ Hillman Library Mobile Device Lending Program Borrower's Agreement This agreement is in effect each time you check out a mobile device. Terms and Conditions: 1. Borrowing of Pittsburgh ID cards are eligible to borrow mobile devices. 2. Loan Periods: Mobile devices are due 8 hours

  6. Managing Processes on Mobile Devices: The MARPLE Approach

    E-Print Network [OSTI]

    Ulm, Universität

    Managing Processes on Mobile Devices: The MARPLE Approach R¨udiger Pryss, Julian Tiedeken process engine which enables light-weight as well as flexible process support on mobile devices. 1 in which chronically ill patients shall be assisted by mobile devices. Such mobile device gives

  7. Privacy Leakage in Mobile Online Social Networks Balachander Krishnamurthy

    E-Print Network [OSTI]

    Wills, Craig E.

    (nearly half of the world's population) who have cell phones. Increasingly, mobile devices have become mobile devices. Correspondingly there has been a growth in new mo- bile OSNs (mOSNs) that primarily cater to `mobile' users, who access them largely via mobile devices. Such convergence is due to the natural

  8. Connect your Windows Mobile 6.x device to Office 365

    E-Print Network [OSTI]

    Neri, Peter

    Connect your Windows Mobile 6.x device to Office 365 Paul Hunter, June 2013 These instructions have been written for Windows Mobile 6 and above. If your Windows Mobile OS is an older version, some@abdn.ac.uk. 1. Remove the old Account Settings Note: If you have not previously connected your Windows Mobile

  9. RICE UNIVERSITY Context in Mobile System Design

    E-Print Network [OSTI]

    Zhong, Lin

    RICE UNIVERSITY Context in Mobile System Design: Characterization, Theory, and Implications of Philosophy DISSERTATION COMMITTEE Lin Zhong, Chair Associate Professor Electrical and Computer Engineering Edward Knightly Professor Electrical and Computer Engineering Ashutosh Sabharwal Associate Professor

  10. Mobi : automatic customization of the mobile Web

    E-Print Network [OSTI]

    Chan, Richard W., M. Eng. Massachusetts Institute of Technology

    2010-01-01

    Mobi is a system that automatically rewrites web pages into formats optimized for web browsing on mobile devices. The system estimates heuristically which parts of a web page's content users are most likely interested in, ...

  11. Mutual information based tracking with mobile sensors

    E-Print Network [OSTI]

    Russ, John A., S.M. Massachusetts Institute of Technology

    2010-01-01

    In order to utilize mobile sensor nodes in a sensing and estimation problem, one must carefully consider the optimal placement of those sensor nodes and simultaneously account for the cost incurred in moving the sensor ...

  12. Techniques for Mobile Location Estimation in UMTS 

    E-Print Network [OSTI]

    Thomas, Nicholas J

    The subject area of this thesis is the locating of mobile users using the future 3rd generation spread spectrum communication system UMTS. The motivation behind this work is twofold: firstly the United States Federal ...

  13. A Low-Power Mobile Sensing Architecture

    E-Print Network [OSTI]

    Dutta, Prabal

    2009-01-01

    1.3 A Low-Power Mobile Sensing Architecture 1.4CCA is the fundamental link primitive in low-power listeninga piezo sensor and ultra low-power filtering, amplification,

  14. Mobile Agent Abstractions: Formulation and Implementation

    E-Print Network [OSTI]

    Joshi, Rushikesh K.

    , Mumbai-400076, India. Email := {rkj, harikcr, ansari}@cse.iitb.ac.in Abstract We present mobile agent and behavioral properties of the agent abstractions. Guidelines for mapping the abstractions to an implementation

  15. Phoenix: Storage Using an Autonomous Mobile Infrastructure

    E-Print Network [OSTI]

    Greenberg, Albert

    devices can shut down or fail unexpectedly. Also, mobile devices may delete some cached data contents due in emergency situations, battlefields, and so on. Ensuring data persistence is a major challenge in designing

  16. NERSC Releases Mobile Apps to Users

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

    (MOTD), as well as log into their account to view recently completed, queued and running jobs, on their mobile phones. The NOVA portal (https:portal-auth.nersc.govnova) is an...

  17. Functional characterization of mobilized tumor cells

    E-Print Network [OSTI]

    Yao, Xiaosai

    2014-01-01

    Despite being responsible for 90% of cancer mortality, metastasis is not well understood. This thesis is focused on the circulation step of the metastatic cascade, examining three types of mobilized tumor cells: circulating ...

  18. Hadoop MapReduce for Mobile Cloud 

    E-Print Network [OSTI]

    George, Johnu

    2014-04-17

    The new generations of mobile devices have high processing power and storage, but they lag behind in terms of software systems for big data storage and processing. Hadoop is a scalable platform that provides distributed storage and computational...

  19. Effective Protocols for Mobile Communications and Networking

    SciTech Connect (OSTI)

    Espinoza, J.; Sholander, P.; Van Leeuwen, B,

    1998-12-01

    This report examines methods of mobile communications with an emphasis on mobile computing and wireless communications. Many of the advances in communications involve the use of Internet Protocol (IP), Asynchronous Transfer Mode (ATM), and ad hoc network protocols. However, many of the advances in these protocols have been focused on wired communications. Recently much focus has been directed at advancing communication technology in the area of mobile wireless networks. This report discusses various protocols used in mobile communications and proposes a number of extensions to existing protocols. A detailed discussion is also included on desirable protocol characteristics and evaluation criteria. In addition, the report includes a discussion on several network simulation tools that maybe used to evaluate network protocols.

  20. Non-Essential Communication in Mobile Applications

    E-Print Network [OSTI]

    Rubin, Julia

    2015-05-04

    This paper studies communication patterns in mobile applications. Our analysis shows that 65% of the HTTP, socket, and RPC communication in top-popular Android applications from Google Play have no effect on the user-observable ...

  1. Incorporating video into Google Mobile Street View

    E-Print Network [OSTI]

    Wright, Christina (Christina E.)

    2010-01-01

    Mobile Street View is a compelling application but suffers from significant latency problems, especially in limited bandwidth circumstances. Currently, the application uses static images to display street level information. ...

  2. Probabilistic models for mobile phone trajectory estimation

    E-Print Network [OSTI]

    Thiagarajan, Arvind

    2011-01-01

    This dissertation is concerned with the problem of determining the track or trajectory of a mobile device - for example, a sequence of road segments on an outdoor map, or a sequence of rooms visited inside a building - in ...

  3. Addressing the needs of mobile users

    E-Print Network [OSTI]

    Sohn, Timothy Youngjin

    2008-01-01

    of mobile information needs . . Pie chart of when needs wereaddressed . . Pie chart of how needs were addressed . . .Pie chart of why needs were addressed later Pie chart of why

  4. Going Mobile: Emissions Trading Gets a Boost from Mobile Source Emission Reduction Credits

    E-Print Network [OSTI]

    Goldschein, Perry S.

    1995-01-01

    Going Mobile: Emissions Trading Gets a Boost From Mobilehave tested various emissions trading policies to supplementAn Analysis of EPA's Emissions Trading Program, 6 YALE J. ON

  5. The relationship between grain boundary structure, defect mobility, and grain boundary sink efficiency

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Uberuaga, Blas Pedro; Vernon, Louis J.; Martinez, Enrique; Voter, Arthur F.

    2015-03-13

    Nanocrystalline materials have received great attention due to their potential for improved functionality and have been proposed for extreme environments where the interfaces are expected to promote radiation tolerance. However, the precise role of the interfaces in modifying defect behavior is unclear. Using long-time simulations methods, we determine the mobility of defects and defect clusters at grain boundaries in Cu. We find that mobilities vary significantly with boundary structure and cluster size, with larger clusters exhibiting reduced mobility, and that interface sink efficiency depends on the kinetics of defects within the interface via the in-boundary annihilation rate of defects. Thus,more »sink efficiency is a strong function of defect mobility, which depends on boundary structure, a property that evolves with time. Further, defect mobility at boundaries can be slower than in the bulk, which has general implications for the properties of polycrystalline materials. Finally, we correlate defect energetics with the volumes of atomic sites at the boundary.« less

  6. Improvement of graphene field-effect transistors by hexamethyldisilazane surface treatment

    SciTech Connect (OSTI)

    Chowdhury, Sk. Fahad; Sonde, Sushant; Rahimi, Somayyeh; Tao, Li; Banerjee, Sanjay; Akinwande, Deji, E-mail: deji@ece.utexas.edu [Microelectronics Research Center, The University of Texas at Austin, Austin, Texas 78758 (United States)

    2014-07-21

    We report the improvement of the electrical characteristics of graphene field-effect transistors (FETs) by hexamethyldisilazane (HMDS) treatment. Both electron and hole field-effect mobilities are increased by 1.5?×?–2×, accompanied by effective residual carrier concentration reduction. Dirac point also moves closer to zero Volt. Time evolution of mobility data shows that mobility improvement saturates after a few hours of HMDS treatment. Temperature-dependent transport measurements show small mobility variation between 77 K and room temperature (295?K) before HMDS application. But mobility at 77 K is almost 2 times higher than mobility at 295?K after HMDS application, indicating reduced carrier scattering. Performance improvement is also observed for FETs made on hydrophobic substrate–an HMDS-graphene-HMDS sandwich structure. Raman spectroscopic analysis shows that G peak width is increased, G peak position is down shifted, and intensity ratio between 2D and G peaks is increased after HMDS application. We attribute the improvements in electronic transport mainly to enhanced screening and mitigation of adsorbed impurities from graphene surface upon HMDS treatment.

  7. EECE 595: SPREAD SPECTRUM COMMUNICATIONS 1 Distributed Power Control in CDMA Cellular

    E-Print Network [OSTI]

    station will corrupt the other signals. Another reason for power control is the battery life time. High of each mobile station. The transmission power of the mobile stations is determined solely on localEECE 595: SPREAD SPECTRUM COMMUNICATIONS 1 Distributed Power Control in CDMA Cellular System Aly El

  8. T-Mobile Germany launches mobile social web services on web'n'walk Feb 12, 2008

    E-Print Network [OSTI]

    Deutschmann, Rainer

    T-Mobile Germany launches mobile social web services on web'n'walk portal Feb 12, 2008 · Agreements services T-Mobile International will extend its open mobile internet experience web'n'walk with unlimited choose from a wide range of Internet services, such as eBay, Amazon and web mail services, and integrate

  9. Low-temperature high-mobility amorphous IZO for silicon heterojunction solar cells

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Morales-Masis, Monica; Martin De Nicolas, Silvia; Holovsky, Jakub; De Wolf, Stefaan; Ballif, Christophe

    2015-07-13

    Parasitic absorption in the transparent conductive oxide (TCO) front electrode is one of the limitations of silicon heterojunction (SHJ) solar cells efficiency. To avoid such absorption while retaining high conductivity, TCOs with high electron mobility are preferred over those with high carrier density. Here, we demonstrate improved SHJ solar cell efficiencies by applying high-mobility amorphous indium zinc oxide (a-IZO) as the front TCO. We sputtered a-IZO at low substrate temperature and low power density and investigated the optical and electrical properties, as well as subband tail formation-quantified by the Urbach energy (EU)-as a function of the sputtering oxygen partial pressure.more »We obtain an EU as low as 128 meV for films with the highest Hall mobility of 60 cm2/Vs. When comparing the performance of a-IZO films with indium tin oxide (ITO) and hydrogenated indium oxide (IO:H), we find that IO:H (115 cm2/Vs) exhibits a similar EU of 130 meV, while ITO (25 cm2/Vs) presents a much larger EU of up to 270 meV. The high film quality, indicated by the low EU, the high mobility, and low free carrier absorption of the developed a-IZO electrodes, result in a significant current improvement, achieving conversion efficiencies over 21.5%, outperforming those with standard ITO.« less

  10. Vision Based Navigation for a Mobile Robot with Different Field of Views

    E-Print Network [OSTI]

    Khan, Rizwan A; Saeed, Saqib

    2009-01-01

    The basic idea behind evolutionary robotics is to evolve a set of neural controllers for a particular task at hand. It involves use of various input parameters such as infrared sensors, light sensors and vision based methods. This paper aims to explore the evolution of vision based navigation in a mobile robot. It discusses in detail the effect of different field of views for a mobile robot. The individuals have been evolved using different FOV values and the results have been recorded and analyzed.The optimum values for FOV have been proposed after evaluating more than 100 different values. It has been observed that the optimum FOV value requires lesser number of generations for evolution and the mobile robot trained with that particular value is able to navigate well in the environment.

  11. Influence of interface mobility on the evolution of Austenite-Martensite grain assemblies during annealing

    SciTech Connect (OSTI)

    Clarke, Amy J; Santofimia, Maria J; Speer, John G; Zhao, L; Sietsma, Jilt

    2009-01-01

    The quenching and partitioning (Q&P) process is a new heat treatment for the creation of advanced high-strength steels. This treatment consists of an initial partial or full austenitization, followed by a quench to form a controlled amount of martensite and an annealing step to partition carbon atoms from the martensite to the austenite. In this work, the microstructural evolution during annealing of martensite-austenite grain assemblies has been analyzed by means of a modeling approach that considers the influence of martensite-austenite interface migration on the kinetics of carbon partitioning. Carbide precipitation is precluded in the model, and three different assumptions about interface mobility are considered, ranging from a completely immobile interface to the relatively high mobility of an incoherent ferrite-austenite interface. Simulations indicate that different interface mobilities lead to profound differences in the evolution of microstructure that is predicted during annealing.

  12. Energy Productivity Improvement in Petrochemical Plants 

    E-Print Network [OSTI]

    Robinson, A. M.

    1984-01-01

    planning economics, open loop computer control of multi-department energy variables, and closed loop computer optimization of plantwide energy variables. Results indicate a ten to fifteen percent energy productivity improvement can be expected....

  13. The effects of mobile ATM switches on PNNI peer group operation

    SciTech Connect (OSTI)

    Martinez, L.; Sholander, P.; Tolendino, L.

    1997-04-01

    This contribution discusses why, and how, mobile networks and mobile switches might be discussed during Phase 1 of the WATM standards process. Next, it reviews mobile routers within Mobile IP. That IP mobility architecture may not apply to the proposed mobile ATM switches. Finally, it discusses problems with PNNI peer group formation and operation when mobile ATM switches are present.

  14. Design and Analysis ofDesign and Analysis of Mobile SystemsMobile Systems

    E-Print Network [OSTI]

    Wong, Jennifer L.

    Video Games Virtual RealityVirtual Reality Smart Kindergarten (UCLA)Smart Kindergarten (UCLA) #12;3 OverviewGauss--Markov, Probabilistic, City SectionMarkov, Probabilistic, City Section ­­ Group MobilityGroup Mobility Correlated Random) ­­ Position in Destination/Room & Path betweenPosition in Destination/Room & Path between (floor plan grid

  15. Interim Report: Landscaping Mobile Social Media and Mobile Payments in Indonesia

    E-Print Network [OSTI]

    Chen, Zhongping

    1 Interim Report: Landscaping Mobile Social Media and Mobile Payments in Indonesia Tom Boellstorff of Surabaya (East Java province, Indonesia) and Makassar (South Sulawesi province, Indonesia), began in late Imagine, if you will, a world centered on Indonesia rather than the United States. While the USA

  16. UTILIZING SAP'S SYBASE UNWIRED PLATFORM AND MOBILE BUSINESS OBJECTS TO CREATE A MOBILE PLANT MAINTENANCE APPLICATION.

    E-Print Network [OSTI]

    ElAarag, Hala

    .......................................................... 12 #12;1 ABSTRACT The purpose of this project is to use System Analysis and Program DevelopmentUTILIZING SAP'S SYBASE UNWIRED PLATFORM AND MOBILE BUSINESS OBJECTS TO CREATE A MOBILE PLANT by System Analysis and Program Development and the server access they so graciously provided to both myself

  17. Hooked differential mobility spectrometry apparatus and method therefore

    DOE Patents [OSTI]

    Shvartsburg, Alexandre A [Richland, WA; Tang, Keqi [Richland, WA; Ibrahim, Yehia M [Richland, WA; Smith, Richard D [Richland, WA

    2009-02-17

    Disclosed are a device and method for improved interfacing of differential mobility spectrometry (DMS) or field asymmetric waveform ion mobility spectrometry (FAIMS) analyzers of substantially planar geometry to subsequent or preceding instrument stages. Interfacing is achieved using curved DMS elements, where a thick ion beam emitted by planar DMS analyzers or injected into them for ion filtering is compressed to the gap median by DMS ion focusing effect in a spatially inhomogeneous electric field. Resulting thinner beams are more effectively transmitted through necessarily constrained conductance limit apertures to subsequent instrument stages operated at a pressure lower than DMS, and/or more effectively injected into planar DMS analyzers. The technology is synergetic with slit apertures, slit aperture/ion funnels, and high-pressure ion funnel interfaces known in the art which allow for increasing cross-sectional area of MS inlets. The invention may be used in integrated analytical platforms, including, e.g., DMS/MS, LC/DMS/MS, and DMS/IMS/MS that could replace and/or enhance current LC/MS methods, e.g., for proteomics research.

  18. Predator Control as a Tool in Wildlife Management 

    E-Print Network [OSTI]

    Rollins, Dale

    2004-02-26

    Support control Control foxes, raccoons and skunks To protect duck species in danger of extinction 81% To protect endangered shorebirds 67% To increase songbird populations 55% To improve upland game bird populations 56% Control hawks and owls to improve...

  19. A Mediation Framework for Mobile Web Service Provisioning

    E-Print Network [OSTI]

    Srirama, Satish Narayana; Prinz, Wolfgang; 10.1109/EDOCW.2006.9

    2010-01-01

    Web Services and mobile data services are the newest trends in information systems engineering in wired and wireless domains, respectively. Web Services have a broad range of service distributions while mobile phones have large and expanding user base. To address the confluence of Web Services and pervasive mobile devices and communication environments, a basic mobile Web Service provider was developed for smart phones. The performance of this Mobile Host was also analyzed in detail. Further analysis of the Mobile Host to provide proper QoS and to check Mobile Host's feasibility in the P2P networks, identified the necessity of a mediation framework. The paper describes the research conducted with the Mobile Host, identifies the tasks of the mediation framework and then discusses the feasible realization details of such a mobile Web Services mediation framework.

  20. Improving Gas Flooding Efficiency

    SciTech Connect (OSTI)

    Reid Grigg; Robert Svec; Zheng Zeng; Alexander Mikhalin; Yi Lin; Guoqiang Yin; Solomon Ampir; Rashid Kassim

    2008-03-31

    This study focuses on laboratory studies with related analytical and numerical models, as well as work with operators for field tests to enhance our understanding of and capabilities for more efficient enhanced oil recovery (EOR). Much of the work has been performed at reservoir conditions. This includes a bubble chamber and several core flood apparatus developed or modified to measure interfacial tension (IFT), critical micelle concentration (CMC), foam durability, surfactant sorption at reservoir conditions, and pressure and temperature effects on foam systems.Carbon dioxide and N{sub 2} systems have been considered, under both miscible and immiscible conditions. The injection of CO2 into brine-saturated sandstone and carbonate core results in brine saturation reduction in the range of 62 to 82% brine in the tests presented in this paper. In each test, over 90% of the reduction occurred with less than 0.5 PV of CO{sub 2} injected, with very little additional brine production after 0.5 PV of CO{sub 2} injected. Adsorption of all considered surfactant is a significant problem. Most of the effect is reversible, but the amount required for foaming is large in terms of volume and cost for all considered surfactants. Some foams increase resistance to the value beyond what is practical in the reservoir. Sandstone, limestone, and dolomite core samples were tested. Dissolution of reservoir rock and/or cement, especially carbonates, under acid conditions of CO2 injection is a potential problem in CO2 injection into geological formations. Another potential change in reservoir injectivity and productivity will be the precipitation of dissolved carbonates as the brine flows and pressure decreases. The results of this report provide methods for determining surfactant sorption and can be used to aid in the determination of surfactant requirements for reservoir use in a CO{sub 2}-foam flood for mobility control. It also provides data to be used to determine rock permeability changes during CO{sub 2} flooding due to saturation changes, dissolution, and precipitation.

  1. AndWellness: An Open Mobile System for Activity and Experience Sampling

    E-Print Network [OSTI]

    2011-01-01

    interaction with mobile devices and services. ACM, New York,position tracking for mobile devices. In Proceedings of theo? for continuous mobile device location. In Proceedings of

  2. Characterizing and Leveraging Processor Variability in Mobile Devices for Energy Efficiency

    E-Print Network [OSTI]

    Chandrashekhar, Roshni

    2.5 Energy Savings on Mobile Devices . . . . . . . .in Mobile Devices . . . . . . . . . . . . . . . . . . 4.1quality assessment on mobile devices: Subjective, behavioral

  3. Using an Agile-based Approach to Develop A Library Mobile Website

    E-Print Network [OSTI]

    Critchlow, Matthew; Friedman, Lia G.; Suchy, Daniel

    2011-01-01

    needs of patrons with mobile devices and to provide inputdata connections. Mobile devices and browsers also do notwere not considered. The mobile device platforms targeted by

  4. Cellular Network for Mobile Devices and Applications: Infrastructure Limitations and Solutions

    E-Print Network [OSTI]

    Peng, Chunyi

    2013-01-01

    of Mobile Devices and Apps . . . . . . . . . . . . . . . . .that can support the mobile devices and applications as theIn the meantime, mobile devices and applications are

  5. Energy-Efficient Location Service Protocols for Mobile Ad Hoc Networks Zijian Wang, Eyuphan Bulut, and Boleslaw K. Szymanski

    E-Print Network [OSTI]

    Bystroff, Chris

    Energy-Efficient Location Service Protocols for Mobile Ad Hoc Networks Zijian Wang, Eyuphan Bulut the location of the destination node. Seldom they consider energy efficiency in their designs energy efficiency and improve the query success rate in comparison to the previously proposed algorithms

  6. Mobility 2030: The Metropolitan Transportation Plan for the Dallas-Fort Worth Area 2009 Amendment 

    E-Print Network [OSTI]

    North Central Texas Council of Governments

    2009-04-09

    are consistent with state and regional air quality improvement goals. Infrastructure Mainten. Management & Operations (ITS, TSM,TDM, Bike/Ped) Rail & Bus HOV/Managed Lanes Freeway/Tollway & Arterial Mobility Plan = Intermodal Planning Efforts System..., Paratransit Capital $1.5 Regional Arterial System $3.4 Other Arterials $2.9 Freeway, Tollway, HOV, Managed System $32.8 *Costs are adjusted for ?total project cost? and ?year of expenditure? consistent with SAFETEA-LU planning requirements. ?Actual...

  7. A highly efficient, compact Yb:KYW laser for mobile precision systems

    SciTech Connect (OSTI)

    Kuznetsov, S A; Pivtsov, V S [Institute of Laser Physics, Siberian Branch, Russian Academy of Sciences, Novosibirsk (Russian Federation)

    2014-05-30

    We have developed a promising scheme of a multimodediode-pumped ytterbium laser. The Yb:KYW laser in the cw regime demonstrates record-high differential (40%) and total optical (35%) efficiencies. Mode locking is realised, which allows the scheme to be used for the development of compact laser systems, such as mobile femtosecond precision synthesisers. The peculiarities of the laser operation and ways of further improving its efficiency are discussed. (lasers)

  8. Wide size range fast integrated mobility spectrometer

    SciTech Connect (OSTI)

    Wang, Jian

    2013-10-29

    A mobility spectrometer to measure a nanometer particle size distribution is disclosed. The mobility spectrometer includes a conduit and a detector. The conduit is configured to receive and provide fluid communication of a fluid stream having a charged nanometer particle mixture. The conduit includes a separator section configured to generate an electrical field of two dimensions transverse to a dimension associated with the flow of the charged nanometer particle mixture through the separator section to spatially separate charged nanometer particles of the charged nanometer particle mixture in said two dimensions. The detector is disposed downstream of the conduit to detect concentration and position of the spatially-separated nanometer particles.

  9. Targeted sensors for investigating mobile Zinc in biology

    E-Print Network [OSTI]

    Chyan, Wen, S.B. Massachusetts Institute of Technology

    2013-01-01

    Chapter 1. Sensing Strategies for Detection of Mobile Zinc. Mobile zinc plays important physiological roles in areas such as the hippocampus, prostate, and pancreas. A better understanding of the distribution of intracellular ...

  10. New directions for assisted housing mobility in America

    E-Print Network [OSTI]

    Rinzler, Daniel Scott

    2013-01-01

    Assisted housing mobility programs aim to help low-income families leverage tenant-based rental assistance (TBRA) to move to areas that provide basic ingredients for security and socioeconomic mobility. Although attractive ...

  11. Good Experimental Methodologies and Simulation in Autonomous Mobile Robotics

    E-Print Network [OSTI]

    Amigoni, Francesco

    Good Experimental Methodologies and Simulation in Autonomous Mobile Robotics Francesco Amigoni and Viola Schiaffonati Artificial Intelligence and Robotics Laboratory, Dipartimento di Elettronica e to characterize analytically, as it is often the case in autonomous mobile robotics. Although their importance

  12. 2012 NC Mobile CARE Awards April 20, 2012

    E-Print Network [OSTI]

    provided technology assessment and commercialization services to notable clients such as NASA. Our Judges2012 NC Mobile CARE Awards April 20, 2012 Background: The NC Mobile Clean Air Renewable Energy

  13. Efficient Sensor Node Authentication via 3GPP Mobile Communication Networks

    E-Print Network [OSTI]

    Kim, Kwangjo

    , 3G-WSN 1. INTRODUCTION As a de facto standard for the wireless sensor networks (WSNs), Zigbee [3 smartphone as a mobile device (MD) has GAA module and Zigbee module. The network consists of mobile network

  14. Mobile sensor systems for field estimation and "hot spot" identification

    E-Print Network [OSTI]

    Kumar, Sumeet, Ph. D. Massachusetts Institute of Technology

    2014-01-01

    Robust, low-cost mobile sensing enables effective monitoring and management of urban environment and infrastructure which contributes towards a sustainable future. While mobile sensor systems have attracted significant ...

  15. Sensor based localization for multiple mobile robots using virtual links 

    E-Print Network [OSTI]

    Rynn, Andrew John

    2004-11-15

    Mobile robots are used for a wide range of purposes such as mapping an environment and transporting material goods. Regardless of the specific application, the navigation of the mobile robot is usually divided into three separate parts: localization...

  16. Terrain sensing and estimation for dynamic outdoor mobile robots

    E-Print Network [OSTI]

    Ward, Christopher Charles

    2007-01-01

    In many applications, mobile robots are required to travel on outdoor terrain at high speed. Compared to traditional low-speed, laboratory-based robots, outdoor scenarios pose increased perception and mobility challenges ...

  17. Ada : context-sensitive context-sensing on mobile devices

    E-Print Network [OSTI]

    Chen, Yu-Han, S.M. Massachusetts Institute of Technology

    2013-01-01

    This thesis describes the design, implementation, and evaluation of Ada, a context-sensing service for mobile devices. Ada explores new points in the accuracy-energy-responsiveness design space for mobile context sensing. ...

  18. Motion planning algorithms for a group of mobile agents 

    E-Print Network [OSTI]

    Lal, Mayank

    2008-10-10

    Building autonomous mobile agents has been a major research effort for a while with cooperative mobile robotics receiving a lot of attention in recent times. Motion planning is a critical problem in deploying autonomous ...

  19. Understanding energy consumption of sensor enabled applications on mobile phones

    E-Print Network [OSTI]

    Hartman, Josh

    Recent research in ubiquitous and mobile computing uses mobile phones and wearable accelerometers to monitor individuals' physical activities for personalized and proactive health care. The goal of this project is to measure ...

  20. Mobile payments : what we can learn from the past

    E-Print Network [OSTI]

    Priso, Gladys (Gladys Emilie)

    2006-01-01

    Over the last decade, there has been a proliferation of mobile payments systems (MPS). Close to 150 MPS currently exist in the world according to the Bank for International Settlement records (BIS). Mobile payments (MP) ...