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Articles 61 - 81 of 81
Full-Text Articles in Engineering
Architecture And Usability Aspects Of Environmental Data Portals, Michael Mcmahon, Jr.
Architecture And Usability Aspects Of Environmental Data Portals, Michael Mcmahon, Jr.
2010 Annual Nevada NSF EPSCoR Climate Change Conference
12 PowerPoint slides Session 2: Infrastructure Convener: Sergiu Dascalu, UNR Abstract: -Web Portal: A web site that acts as a starting point or gateway to Internet content, services, and information. Portals expose this information via a consistent set of visual elements and organizational constructs that improve the user experience and may relate, unify, or otherwise enhance the content. -Data Portal: A web site that acts as a starting point or gateway to Internet content, web/data services, and related information. Portals expose this information via a consistent set of visual elements and organizational constructs that improve the user experience and relate, …
Survey Of Environmental Data Portals: Features, Characteristics, And Reliability Issues, Shahram Latifi, David Walker
Survey Of Environmental Data Portals: Features, Characteristics, And Reliability Issues, Shahram Latifi, David Walker
2010 Annual Nevada NSF EPSCoR Climate Change Conference
24 PowerPoint slides Session 2: Infrastructure Convener: Sergiu Dascalu, UNR Abstract: -What is a Data Portal? -Presents information from diverse sources in a unified way -Enables instant, reliable and secure exchange of information over the Web -The "portal" concept is to offer a single web page that aggregates content from several systems or servers.
Goals, Plans, And Strategies Of The Cyberinfrastructure Project Component, Sergiu Dascalu
Goals, Plans, And Strategies Of The Cyberinfrastructure Project Component, Sergiu Dascalu
2010 Annual Nevada NSF EPSCoR Climate Change Conference
15 PowerPoint slides Session 2: Infrastructure Convener: Sergiu Dascalu, UNR Abstract: -Team -Goal and Targets -Strategies and Activities -Progress: Activities & Milestones -Plans
Research Poster: Software Frameworks For Improved Productivity In Climate Change Research, Sohei Okamoto
Research Poster: Software Frameworks For Improved Productivity In Climate Change Research, Sohei Okamoto
2010 Annual Nevada NSF EPSCoR Climate Change Conference
Research poster
Research Poster: Architecture And Usability Aspects Of Environmental Data Portals, Victor Ivanov
Research Poster: Architecture And Usability Aspects Of Environmental Data Portals, Victor Ivanov
2010 Annual Nevada NSF EPSCoR Climate Change Conference
Research poster
Research Poster: Htsma: A Hybrid Temporal-Spatial Multi-Channel Assignment Scheme In Heterogeneous Wireless Mesh Networks, Yan Jin, Ju-Yeon Jo, Mei Yang, Yoohwan Kim, Yingtao Jiang, John Gowens
Research Poster: Htsma: A Hybrid Temporal-Spatial Multi-Channel Assignment Scheme In Heterogeneous Wireless Mesh Networks, Yan Jin, Ju-Yeon Jo, Mei Yang, Yoohwan Kim, Yingtao Jiang, John Gowens
2010 Annual Nevada NSF EPSCoR Climate Change Conference
Research poster
Research Poster: Survey Of Environmental Data Portals: Features And Characteristics, David Walker
Research Poster: Survey Of Environmental Data Portals: Features And Characteristics, David Walker
2010 Annual Nevada NSF EPSCoR Climate Change Conference
Research poster
The Value Of Concentrating Solar Power And Thermal Energy Storage, Ramteen Sioshansi, Paul Denholm
The Value Of Concentrating Solar Power And Thermal Energy Storage, Ramteen Sioshansi, Paul Denholm
Publications (E)
This paper examines the value of concentrating solar power (CSP) and thermal energy storage (TES) in four regions in the southwestern United States. Our analysis shows that TES can increase the value of CSP by allowing more thermal energy from a CSP plant’s solar field to be used, by allowing a CSP plant to accommodate a larger solar field, and by allowing CSP generation to be shifted to hours with higher energy prices. We analyze the sensitivity of CSP value to a number of factors, including the optimization period, price and solar forecasting, ancillary service sales, capacity value and dry …
Doe Request For Information (Rfi) De-Foa-0000153 Pv Manufacturing Initiative: Summary Report, National Renewable Energy Laboratory
Doe Request For Information (Rfi) De-Foa-0000153 Pv Manufacturing Initiative: Summary Report, National Renewable Energy Laboratory
Publications (E)
Clean Cities hosts a collection of tools on the exploring concepts for a “PV Manufacturing Initiative” to facilitate the development of a strong photovoltaic (PV) manufacturing industry in the United States. As an integral part this effort, and to inform the creation of a new funding opportunity in this area, DOE sought feedback from the PV industry.
This document summarizes the results of the PV Manufacturing Request for Information (RFI), DE-FOA-0000153. (See Attachment 1.) The RFI was posted on http://www.grants.gov on 4 September 2009 and the NREL Web site on 9 September 2009. Respondents were asked to submit RFI inputs …
Technology Improvement Pathways To Cost-Effective Vehicle Electrification: Preprint, A. Brooker, M. Thornton, J. Rugh
Technology Improvement Pathways To Cost-Effective Vehicle Electrification: Preprint, A. Brooker, M. Thornton, J. Rugh
Publications (T)
Electrifying transportation can reduce or eliminate dependence on foreign fuels, emission of green house gases, and emission of pollutants. One challenge is finding a pathway for vehicles that gains wide market acceptance to achieve a meaningful benefit. This paper evaluates several approaches aimed at making plug-in electric vehicles (EV) and plug-in hybrid electric vehicles (PHEVs) cost-effective including opportunity charging, replacing the battery over the vehicle life, improving battery life, reducing battery cost, and providing electric power directly to the vehicle during a portion of its travel. Many combinations of PHEV electric range and battery power are included. For each case, …
Integrated Vehicle Thermal Management For Advanced Vehicle Propulsion Technologies: Preprint., K. Bennion, M. Thornton
Integrated Vehicle Thermal Management For Advanced Vehicle Propulsion Technologies: Preprint., K. Bennion, M. Thornton
Publications (T)
A critical element to the success of new propulsion technologies that enable reductions in fuel use is the integration of component thermal management technologies within a viable vehicle package. Vehicle operation requires vehicle thermal management systems capable of balancing the needs of multiple vehicle systems that may require heat for operation, require cooling to reject heat, or require operation within specified temperature ranges. As vehicle propulsion transitions away from a single form of vehicle propulsion based solely on conventional internal combustion engines (ICEs) toward a wider array of choices including more electrically dominant systems such as plug-in hybrid electric vehicles …
The Role Of Energy Storage With Renewable Electricity Generation, Paul Denholm, Erik Ela, Brendan Kirby, Michael Milligan
The Role Of Energy Storage With Renewable Electricity Generation, Paul Denholm, Erik Ela, Brendan Kirby, Michael Milligan
Publications (E)
Renewable energy sources, such as wind and solar, have vast potential to reduce dependence on fossil fuels and greenhouse gas emissions in the electric sector. Climate change concerns, state initiatives including renewable portfolio standards, and consumer efforts are resulting in increased deployments of both technologies. Both solar photovoltaics (PV) and wind energy have variable and uncertain (sometimes referred to as “intermittent”) output, which are unlike the dispatchable sources used for the majority of electricity generation in the United States. The variability of these sources has led to concerns regarding the reliability of an electric grid that derives a large fraction …
Analysis Of Hybrid Hydrogen Systems: Final Report, J. Dean, R. Braun, D. Munoz, M. Penev, C. Kinchin
Analysis Of Hybrid Hydrogen Systems: Final Report, J. Dean, R. Braun, D. Munoz, M. Penev, C. Kinchin
Publications (E)
This project examined biomass pathways for hydrogen production and how they can be hybridized to support renewable electricity generation. The project considered many potential hybrid systems before narrowing the focus to two. The systems were studied in detail for process feasibility and economic performance. The best-performing system was estimated to produce hydrogen at a cost ($1.67/kg) within range of the Department of Energy target for central biomass-derived hydrogen production, while also providing value-added energy services to the electric grid.
2008 Solar Technologies Market Report, U.S. Department Of Energy
2008 Solar Technologies Market Report, U.S. Department Of Energy
Publications (E)
This report focuses on the U.S. solar electricity market, including photovoltaic (PV) and concentrating solar power (CSP) technologies. The report provides an overview of global and U.S. installation trends. It also presents production and shipment data, material and supply chain issues, and solar industry employment trends. It also presents cost, price, and performance trends; and discusses policy and market drivers such as recently passed federal legislation, state and local policies, and developments in project financing. The final chapter provides data on private investment trends and near-term market forecasts.
Nrel: A Year In Clean Energy Innovations: A Review Of Nrel's Feature Stories, National Renewable Energy Laboratory
Nrel: A Year In Clean Energy Innovations: A Review Of Nrel's Feature Stories, National Renewable Energy Laboratory
Publications (E)
The National Renewable Energy Laboratory (NREL) is the nation’s primary laboratory for renewable energy and energy efficiency research and development.
NREL’s mission and strategy are focused on advancing the U.S. Department of Energy’s and our nation’s energy goals. The laboratory’s scientists and researchers support critical market objectives to accelerate research from scientific innovations to market-viable alternative energy solutions. At the core of this strategic direction are NREL’s research and technology development competencies. These areas span from understanding renewable resources for energy, to the conversion of these resources to renewable electricity and fuels, and ultimately to the use of renewable electricity …
Wind Powering America: Fy09 Activities Summary, National Renewable Energy Laboratory
Wind Powering America: Fy09 Activities Summary, National Renewable Energy Laboratory
Publications (E)
The Wind Powering America FY09 Activities Summary reflects the accomplishments of state Wind Working Groups, WPA programs at the National Renewable Energy Laboratory, and partner organizations.
Hrc Enews — 2010 Winter, Megan K. Svarz
Hrc Enews — 2010 Winter, Megan K. Svarz
Publications (HRC)
This issue contains staff accomplishments and announcements, event listings, a "new faces" listing for new staff, affiliates, and researchers, and an "on the move" section listing new developments.
On The Effect Of Hydrodynamic Slip On The Polarization Of A Nonconducting Spherical Particle In An Alternating Electric Field, Hui Zhao
Mechanical Engineering Faculty Research
The polarization of a charged, dielectric, spherical particle with a hydrodynamically slipping surface under the influence of a uniform alternating electric field is studied by solving the standard model (the Poisson–Nernst–Planck equations). The dipole moment characterizing the strength of the polarization is computed as a function of the double layer thickness, the electric field frequency, the particle’s surface charge, and the slip length. Our studies reveal that two processes contribute to the dipole moment: ion transport inside the double layer driven by the electric field and the particle’s electrophoretic motion. The hydrodynamic slip will simultaneously impact both processes. In the …
Electro-Osmotic Flow Over A Charged Superhydrophobic Surface, Hui Zhao
Electro-Osmotic Flow Over A Charged Superhydrophobic Surface, Hui Zhao
Mechanical Engineering Faculty Research
Bubbles can be trapped inside textured structures such as grooves, forming a superhydrophobic surface. A superhydrophobic surface has a large effective hydrodynamic slip length compared to a smooth hydrophobic surface and holds the promise of enhancing electrokinetic flows that find many interesting applications in microfluidics. However, recent theoretical studies suggested that electro-osmotic flows over a weakly charged superhydrophobic surface
the zeta potential of the surface is smaller than the thermal potential (25 mV) can only be enhanced when liquid-gas interfaces are charged [T. M. Squires, Phys. Fluids 20, 092105 (2008); Bahga et al., J. Fluid Mech. 644, 245 (2010)]. So …
Real-Time On-Board Object Tracking For Cooperative Flight Control, Ajay Kumar Mandava, Emma Regentova, Henry Selvaraj
Real-Time On-Board Object Tracking For Cooperative Flight Control, Ajay Kumar Mandava, Emma Regentova, Henry Selvaraj
Electrical & Computer Engineering Faculty Research
One of possible cooperative Situations for flights could be a scenario when the decision on a new path is taken by A Certain fleet member, who is called the leader. The update on the new path is Transmitted to the fleet members via communication That can be noisy. An optical sensor can be used as a back-up for re-estimating the path parameters based on visual information. For A Certain topology, the issue can be solved by continuous tracking of the leader of the fleet in the video sequence and re-adjusting parameters of the flight, accordingly. To solve such a problem …
Giant Raman Enhancement On Nanoporous Gold Film By Conjugating With Nanoparticles For Single-Molecule Detection, Lihua Qian, Biswajit Das, Yan Li, Zhilin Yang
Giant Raman Enhancement On Nanoporous Gold Film By Conjugating With Nanoparticles For Single-Molecule Detection, Lihua Qian, Biswajit Das, Yan Li, Zhilin Yang
Electrical & Computer Engineering Faculty Research
Hot spots have the contradictively geometrical requirements for both the narrowest interstices to provide strong near-field coupling, and sufficient space to allow entrance of the analytes. Herein, a two-step method is employed to create hot spots within hybrid nanostructures, which consist of self-supported nanoporous gold films with the absorbed probes and subsequent nanoparticle conjugates without surface agents or mechanical motion. The molecules confined into 1 nm interstice exhibit 2.9 × 107 times enhancement in Raman scattering compared to pure nanoporous gold. Giant enhancement primarily results from strong near-field coupling between nanopore and nanoparticle, which is theoretically confirmed by finite-difference …