85 Matching Results

Search Results

Results: 1 - 24 next
open access

NetMOD version 1.0 user%3CU%2B2019%3Es manual.

Description: NetMOD (Network Monitoring for Optimal Detection) is a Java-based software package for conducting simulation of seismic networks. Specifically, NetMOD simulates the detection capabilities of seismic monitoring networks. Network simulations have long been used to study network resilience to station outages and to determine where additional stations are needed to reduce monitoring thresholds. NetMOD makes use of geophysical models to determine the source characteristics, signal attenuation along … more
Date: January 1, 2014
Creator: Merchant, Bion John
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Studies of the 3D structure of the proton at Jlab

Description: In recent years parton distributions, describing longitudinal momentum, helicity and transversity distributions of quarks and gluons, have been generalized to account also for transverse degrees of freedom. Two new sets of more general distributions, Transverse Momentum Distributions (TMDs) and Generalized Parton Distributions (GPDs) were introduced to describe transverse momentum and spatial distributions of partons. Great progress has been made since then in measurements of different Single S… more
Date: January 1, 2014
Creator: Avakian, Harut A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Learning from the Past, Looking to the Future: Modeling Social Unrest in Karachi, Pakistan

Description: Social unrest represents a major challenge for policy makers around the globe, as it can quickly escalate from small scale disturbances to highly public protests, riots and even civil war. This research was motivated by a need to understand social instability and to unpack the comments made during a spring 2013 conference hosted by Pacific Northwest National Laboratory’s Center for Global Security and the U.S. Institute for Peace, where policymakers noted that models considering social instabil… more
Date: January 1, 2014
Creator: Olson, Jarrod; Kurzrok, Andrew J.; Hund, Gretchen & Fagley, Erik M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Nonlinear Legendre Spectral Finite Elements for Wind Turbine Blade Dynamics: Preprint

Description: This paper presents a numerical implementation and examination of new wind turbine blade finite element model based on Geometrically Exact Beam Theory (GEBT) and a high-order spectral finite element method. The displacement-based GEBT is presented, which includes the coupling effects that exist in composite structures and geometric nonlinearity. Legendre spectral finite elements (LSFEs) are high-order finite elements with nodes located at the Gauss-Legendre-Lobatto points. LSFEs can be an order… more
Date: January 1, 2014
Creator: Wang, Q.; Sprague, M. A.; Jonkman, J. & Johnson, N.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Potential Economic Impacts from Offshore Wind in the Gulf of Mexico Region (Fact Sheet)

Description: Offshore wind is a clean, renewable source of energy and can be an economic driver in the United States. To better understand the employment opportunities and other potential regional economic impacts from offshore wind development, the U.S. Department of Energy (DOE) funded research that focuses on four regions of the country. The studies use multiple scenarios with various local job and domestic manufacturing content assumptions. Each regional study uses the new offshore wind Jobs and Economi… more
Date: January 1, 2014
Creator: Flores, F.; Keyser, D. & Tegen, S.
Item Type: Refine your search to only Text
Partner: UNT Libraries Government Documents Department
open access

Extraction of Transversity and Collins Functions

Description: We present a global re-analysis of recent experimental data on azimuthal asymmetries in semi-inclusive deep inelastic scattering, from the HERMES and COMPASS Collaborations, and in e{sup +}e{sup -} --> h_1h_2X processes, from the Belle Collaboration. The transversity distribution and the Collins functions are extracted simultaneously, in a revised analysis which also takes into account a new parameterization of the unknown functions.
Date: January 1, 2014
Creator: Anselmino, Mauro; Boglione, Mariaelena; D'Alesio, Umberto; Melis, Stefano; Murgia, Francesco & Prokudin, Alexei
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Executive Order 13514: Federal Leadership in Environmental, Energy, and Economic Performance; Comprehensive Federal Fleet Management Handbook (Book)

Description: A comprehensive Federal Fleet Management Handbook that builds upon the "Guidance for Federal Agencies on E.O. 13514 Section 12-Federal Fleet Management" and provides information to help fleet managers select optimal greenhouse gas and petroleum reduction strategies for each location, meeting or exceeding related fleet requirements, acquiring vehicles to support these strategies while minimizing fleet size and vehicle miles traveled, and refining strategies based on agency performance.
Date: January 1, 2014
Creator: Daley, R.; Ahdieh, N. & Bentley, J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

On the role of the Sivers effect in A{sub N} for inclusive particle production in pp collisions

Description: Single spin asymmetries, A{sub N} , for inclusive particle production in pp collisions are considered within a generalized parton model with inclusion of spin and tranverse momentum effects. We consider the potential role of the Sivers effect in A{sub N} , as extracted from a careful analysis of azimuthal asymmetries in SIDIS, and discuss its phenomenological consequences in connection with a recently updated study of the Collins effect.
Date: January 1, 2014
Creator: Anselmino, Mauro; Boglione, Mariaelena; D'Alesio, Umberto; Melis, Stefano; Murgia, Francesco & Prokudin, Alexei
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Solar Resource Measurements in Humboldt State University, Arcata, California: Cooperative Research and Development Final Report, CRADA Number CRD-08-262

Description: Site-specific, long-term, continuous, and high-resolution measurements of solar irradiance are important for developing renewable resource data. These data are used for several research and development activities consistent with the NREL mission: establish a national 30-year climatological database of measured solar irradiances; provide high quality ground-truth data for satellite remote sensing validation; support development of radiative transfer models for estimating solar irradiance from av… more
Date: January 1, 2014
Creator: Stoffel, T. & Andreas, A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Hydronic Heating Coil Versus Propane Furnace, Rehoboth Beach, Delaware (Fact Sheet)

Description: Insight Homes constructed two houses in Rehoboth Beach, Delaware, with identical floor plans and thermal envelopes but different heating and domestic hot water (DHW) systems. Each house is 1,715-ft<sup>2</sup> with a single story, three bedrooms, two bathrooms, and the heating, ventilation, and air conditioning (HVAC) systems and ductwork located in conditioned crawlspaces. The standard house, which the builder offers as its standard production house, uses an air source heat pump (ASHP) with su… more
Date: January 1, 2014
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Measurement of Excited Hyperons in Photoproduction at CLAS

Description: Measurement results of photoproduced excited hyperon states using the CLAS detector at Jefferson Lab are shown. The invariant mass distribution of the {Lambda}(1405) has recently been shown to be different for each of the three Sigma pi channels that it decays to, showing that there is prominent interference between the isospin I=0 and I=1 isospin amplitudes. Measurements of the differential and total cross sections of the three hyperons {Lambda}(1405), {Sigma}{sup 0}(1385), and Lambda(1520) ar… more
Date: January 1, 2014
Creator: Moriya, Kei & Schumacher, Reinhard A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department

Polarization Observables From The Photoproduction Of Omega-Mesons Using Linearly Polarized Photons

Description: We report on the extraction of Polarization Observables Spin Density Matrix Elements (SDMEs), and Beam Asymmetry Sigma for omega meson photoproduction using a beam of linearly polarized photons in the photon energy region of Egamma = 1.3 to 1.7 GeV, by means of the angular distributions of the daughter pions from omega decay. These preliminary results are from the g8b dataset, which were collected with the CLAS detector in Hall B of Jefferson Lab.
Date: January 1, 2014
Creator: Martinez, Danny & Cole, Philip L.
Item Type: Refine your search to only Presentation
Partner: UNT Libraries Government Documents Department
open access

Sea quark transverse momentum distributions and dynamical chiral symmetry breaking

Description: Recent theoretical studies have provided new insight into the intrinsic transverse momentum distributions of valence and sea quarks in the nucleon at a low scale. The valence quark transverse momentum distributions (q - qbar) are governed by the nucleon's inverse hadronic size R{sup -1} ~ 0.2 GeV and drop steeply at large p{sub T}. The sea quark distributions (qbar) are in large part generated by non-perturbative chiral-symmetry breaking interactions and extend up to the scale rho{sup -1} ~ 0.6… more
Date: January 1, 2014
Creator: Schweitzer, Peter; Strikman, Mark & Weiss, Christian
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Measurement Of Differential Cross Sections Of p(e,e'{pi}{sup +})n For High-Lying Resonances At Q{sup 2} < 5 GeV{sup 2}

Description: The exclusive electro-production process $ep\to e^{\prime}n\pi^+$ was measured in the range of the invariant mass for $n\pi^+$ system $1.6~\rm{GeV}\le W \le 2.0~\rm{GeV}$, and the photon virtuality $1.8~\rm{GeV^2}\le Q^2\le4.0~\rm{GeV^2}$ using CLAS. For the first time, these kinematics are probed in exclusive $\pi^+$ production from the protons with nearly full coverage in the azimuthal and polar angles of the $n\pi^+$ center-of-mass system. In this experiment, approximately 39,000 differentia… more
Date: January 1, 2014
Creator: Park, Kijun
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Laser Interactions for the Synthesis and In Situ Diagnostics of Nanomaterials

Description: Laser interactions have traditionall been at thec center of nanomaterials science, providing highly nonequilibrium growth conditions to enable the syn- thesis of novel new nanoparticles, nanotubes, and nanowires with metastable phases. Simultaneously, lasers provide unique opportunities for the remote char- acterization of nanomaterial size, structure, and composition through tunable laser spectroscopy, scattering, and imaging. Pulsed lasers offer the opportunity, there- fore, to supply the req… more
Date: January 1, 2014
Creator: Geohegan, David B.; Puretzky, Alexander A.; Yoon, Mina; Eres, Gyula; Rouleau, Christopher; Xiao, Kai et al.
Item Type: Refine your search to only Book
Partner: UNT Libraries Government Documents Department
open access

FAST Modular Wind Turbine CAE Tool: Nonmatching Spatial and Temporal Meshes: Preprint

Description: In this paper we propose and examine numerical algorithms for coupling time-dependent multi-physics modules relevant to computer-aided engineering (CAE) of wind turbines. In particular, we examine algorithms for coupling modules where spatial grids are non- matching at interfaces and module solutions are time advanced with different time increments and different time integrators. Sharing of data between modules is accomplished with a predictor-corrector approach, which allows for either implici… more
Date: January 1, 2014
Creator: Sprague, M. A.; Jonkman, J. M. & Jonkman, B. J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Preliminary Scaling and controls Analysis of an FHR-HTSE System Idaho National Laboratory Summer 2013 Final Report

Description: For new nuclear reactor system designs to be approved by regulatory agencies like the Nuclear Regulatory Commission (NRC), the details of system operation must be validated with respect to standards of safety, control, and output. A scaled experiment that replicates certain properties of the system can be used to validate compliance with regulatory standards, while avoiding the prohibitive cost and labor required to develop a fully functional prototype system; therefore, designing such an exper… more
Date: January 1, 2014
Creator: Bragg-Sitton, Shannon; Sabharwall, Piyush & Upadhya, Rohit
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Chiral dynamics and peripheral transverse densities

Description: In the partonic (or light-front) description of relativistic systems the electromagnetic form factors are expressed in terms of frame-independent charge and magnetization densities in transverse space. This formulation allows one to identify the chiral components of nucleon structure as the peripheral densities at transverse distances b = O(M{sub {pi}}{sup -1}) and compute them in a parametrically controlled manner. A dispersion relation connects the large-distance behavior of the transverse ch… more
Date: January 1, 2014
Creator: Granados, Carlos G. & Weiss, Christian
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Assessing Development Impacts Associated with Low Emission Development Strategies: Lessons Learned from Pilot Efforts in Kenya and Montenegro

Description: Low emission development strategies (LEDS) articulate economy-wide policies and implementation plans designed to enable a country to meet its long-term development objectives while reducing greenhouse gas emissions. A development impact assessment tool was developed to inform an analytically robust and transparent prioritization of LEDS actions based on their economic, social, and environmental impacts. The graphical tool helps policymakers communicate the development impacts of LEDS options an… more
Date: January 1, 2014
Creator: Cox, S.; Katz, J. & Wurtenberger, L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
Back to Top of Screen