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IEA Wind Task 24 Integration of Wind and Hydropower Systems; Volume 2: Participant Case Studies
This report describes the background, concepts, issues and conclusions related to the feasibility of integrating wind and hydropower, as investigated by the members of IEA Wind Task 24. It is the result of a four-year effort involving seven IEA member countries and thirteen participating organizations. The companion report, Volume 2, describes in detail the study methodologies and participant case studies, and exists as a reference for this report.
Date:
December 1, 2011
Creator:
Acker, T.
Object Type:
Report
System:
The UNT Digital Library
Status of EXO-200
EXO-200 is the first phase of the Enriched Xenon Observatory (EXO) experiment, which searches for neutrinoless double beta decay in {sup 136}Xe to measure the mass and probe the Majorana nature of the neutrino. EXO-200 consists of 200 kg of liquid Xe enriched to 80% in {sup 136}Xe in an ultra-low background TPC. Energy resolution is enhanced through the simultaneous collection of scintillation light using Large Area Avalanche Photodiodes (LAAPD's) and ionization charge. It is being installed at the WIPP site in New Mexico, which provides a 2000 meter water-equivalent overburden. EXO-200 will begin taking data in 2009, with the expected two-year sensitivity to the half-life for neutrinoless double beta decay of 6.4 x 10{sup 25} years. According to the most recent nuclear matrix element calculations, this corresponds to an effective Majorana neutrino mass of 0.13 to 0.19 eV. It will also measure the two neutrino mode for the first time in {sup 136}Xe.
Date:
December 6, 2011
Creator:
Ackerman, Nicole
Object Type:
Article
System:
The UNT Digital Library
The transfer of neutral molecules, ions and ionic species from water to benzonitrile; comparison with nitrobenzene
Article on the transfer of neutral molecules, ions and ionic species from water to benzonitrile and a comparison with nitrobenzene.
Date:
October 15, 2011
Creator:
Acree, William E. (William Eugene) & Abraham, M. H. (Michael H.)
Object Type:
Article
System:
The UNT Digital Library
Partition Coefficients of Organic Compounds in Four New Tetraalkylammonium Bis(trifluoromethylsulfonyl)imide Ionic Liquids Using Inverse Gas Chromatography
This article discusses partition coefficients of organic compounds in four new tetraalkylammonium bis(trifluoromethylsulfonyl)imide ionic liquids using inverse gas chromatography.
Date:
August 18, 2011
Creator:
Acree, William E. (William Eugene); Baker, Gary A.; Mutelet, Fabrice & Moïse, Jean-Charles
Object Type:
Article
System:
The UNT Digital Library
Selection of Ionic Liquid Solvents for Chemical Separations Based on the Abraham Model
Book chapter on the selection of ionic liquid solvents for chemical separations based on the Abraham model.
Date:
February 21, 2011
Creator:
Acree, William E. (William Eugene); Grubbs, Laura M. & Abraham, M. H. (Michael H.)
Object Type:
Book Chapter
System:
The UNT Digital Library
Joint Schemes for Physical Layer Security and Error Correction
The major challenges facing resource constraint wireless devices are error resilience, security and speed. Three joint schemes are presented in this research which could be broadly divided into error correction based and cipher based. The error correction based ciphers take advantage of the properties of LDPC codes and Nordstrom Robinson code. A cipher-based cryptosystem is also presented in this research. The complexity of this scheme is reduced compared to conventional schemes. The securities of the ciphers are analyzed against known-plaintext and chosen-plaintext attacks and are found to be secure. Randomization test was also conducted on these schemes and the results are presented. For the proof of concept, the schemes were implemented in software and hardware and these shows a reduction in hardware usage compared to conventional schemes. As a result, joint schemes for error correction and security provide security to the physical layer of wireless communication systems, a layer in the protocol stack where currently little or no security is implemented. In this physical layer security approach, the properties of powerful error correcting codes are exploited to deliver reliability to the intended parties, high security against eavesdroppers and efficiency in communication system. The notion of a highly secure and reliable …
Date:
August 2011
Creator:
Adamo, Oluwayomi Bamidele
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
DAKOTA JAGUAR 2.1 user's Manual.
JAGUAR (JAva GUi for Applied Research) is a Java software tool providing an advanced text editor and graphical user interface (GUI) to manipulate DAKOTA (Design Analysis Kit for Optimization and Terascale Applications) input specifications. This document focuses on the features necessary for a user to use JAGUAR.
Date:
June 1, 2011
Creator:
Adams, Brian M.; Lefantzi, Sophia; Chan, Ethan & Ruthruff, Joseph R.
Object Type:
Report
System:
The UNT Digital Library
The Relationship Between Supplemental Instruction Leader Learning Style and Study Session Design
The purpose of this qualitative study was to examine the learning styles of supplemental instruction leaders at a large, public university during the fall 2010 semester and determine whether or not their personal learning styles influenced the way they designed and developed out-of-class study sessions. The total population of supplemental instruction leaders was 37, of which 24 were eligible to participate in the study. Of the 24 eligible supplemental instruction leaders, 20 completed the entire study. Participants in the study included nine male and 11 female supplemental instruction leaders with a median age of 22.25 years-old. Seventeen participants indicated their classification as senior, two as junior, and one as sophomore. Of the participants, 16 indicated white as a race or ethnicity, one indicated Asian, two indicated African American, and one indicated both American Indian/Alaska Native and white. Supplemental instruction leader learning style was assessed using the Kolb Learning Style Inventory. Leaders were then interviewed, and their study sessions were analyzed. Through triangulation of data from learning style, interviews and actual study session documents, four major themes emerged. The four themes were: 1) incorporation of personal experience into study session design, 2) the sense of impact on student learning, 3) a …
Date:
May 2011
Creator:
Adams, Joshua
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Integrating Selective Herbicide and Native Plant Restoration to Control Alternanthera philoxeroides (Alligator Weed)
Exotic invasive aquatic weeds such as alligator weed (Alternanthera philoxeroides) threaten native ecosystems by interfering with native plant communities, disrupting hydrology, and diminishing water quality. Development of new tools to combat invaders is important for the well being of these sensitive areas. Integrated pest management offers managers an approach that combines multiple control methods for better control than any one method used exclusively. In a greenhouse and field study, we tested the effects of selective herbicide application frequency, native competitor plant introduction, and their integration on alligator weed. In the greenhouse study, alligator weed shoot, root, and total biomass were reduced with one herbicide application, and further reduced with two. Alligator weed cumulative stem length and shoot/root ratio was only reduced after two applications. In the greenhouse, introduction of competitors did not affect alligator weed biomass, but did affect shoot/root ratio. The interaction of competitor introduction and herbicide did not significantly influence alligator weed growth in the greenhouse study. In the field, alligator weed cover was reduced after one herbicide application, but not significantly more after a second. Introduction of competitor species had no effect on alligator weed cover, nor did the interaction of competitor species and herbicide application. This …
Date:
December 2011
Creator:
Adams, Justin
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Drugs and Peace Duration
Paper explores the impact that the production and/or transit of drugs have on the durability of peace following civil war.
Date:
2011
Creator:
Adams, Mark
Object Type:
Article
System:
The UNT Digital Library
Hybrid Organic-Inorganic Composite Solar Cells for Efficient, Low Cost, Photoelectric Energy Conversion
Cadmium selenide nanoparticles and nanoclusters were prepared and added to polymer solar cells to improve their photon capture ability. These nanoparticles did exhibit some beneficial effects on the photon conversion efficiencies of selected polymer solar cells. Ternary bulk heterojunction systems based on composites of methyl viologen-doped, CdSe nanoparticles blended with poly (3-hexothiopene) (P3HT) and 6, 6-phenyl C{sub 61}-butyric acid methyl ester (PCBM) were also tested. It was found that the devices with methyl viologen-doped CdSe nanoparticles do produce more photocurrent in a region surrounding the absorption peak of the particles (560 to 660nm) when compared to pristine P3HT:PCBM devices. Gold nanorods were also prepared and tested in some solar cells. These nanorods did produce a very small enhancement in photon absorbance, but the observed increase the photon conversion efficiency was not sufficient to make the effort worthwhile. Our goals were (1) to prepare cadmium sulfide and cadmium selenide clusters and nanoparticles to be tested as photon absorbers to enhance the photon conversion efficiency of polymer solar polymer solar cells and (2) to prepare gold and silver nanorods to be added to polymer solar cells to enhance their photon capture capability. The cadmium sulfide and cadmium selenide nanoparticles and some new …
Date:
April 6, 2011
Creator:
Adams, Richard D.
Object Type:
Report
System:
The UNT Digital Library
Renaissance of the ~ 1-TeV Fixed-Target Program
This document describes the physics potential of a new fixed-target program based on a {approx}1 TeV proton source. Two proton sources are potentially available in the future: the existing Tevatron at Fermilab, which can provide 800 GeV protons for fixed-target physics, and a possible upgrade to the SPS at CERN, called SPS+, which would produce 1 TeV protons on target. In this paper we use an example Tevatron fixed-target program to illustrate the high discovery potential possible in the charm and neutrino sectors. We highlight examples which are either unique to the program or difficult to accomplish at other venues.
Date:
December 2, 2011
Creator:
Adams, T.; Appel, J. A.; Arms, K. E.; Balantekin, A. B.; Conrad, J. M.; Cooper, P. S. et al.
Object Type:
Article
System:
The UNT Digital Library
CONFIRMATORY SURVEY RESULTS FOR PORTIONS OF THE MATERIALS AND EQUIPMENT FROM UNITS 1 AND 2 AT THE HUMBOLDT BAY POWER PLANT, EUREKA, CALIFORNIA
The Pacific Gas & Electric Company (PG&E) operated the Humboldt Bay Power Plant (HBPP) Unit 3 nuclear reactor near Eureka, California under Atomic Energy Commission (AEC) provisional license number DPR-7. HBPP Unit 3 achieved initial criticality in February 1963 and began commercial operations in August 1963. Unit 3 was a natural circulation boiling water reactor with a direct-cycle design. This design eliminated the need for heat transfer loops and large containment structures. Also, the pressure suppression containment design permitted below-ground construction. Stainless steel fuel claddings were used from startup until cladding failures resulted in plant system contamination—zircaloy-clad fuel was used exclusively starting in 1965 eliminating cladding-related contamination. A number of spills and gaseous releases were reported during operations resulting in a range of mitigative activities (see ESI 2008 for details).
Date:
April 1, 2011
Creator:
Adams, W. C.
Object Type:
Report
System:
The UNT Digital Library
CONFIRMATORY SURVEY RESULTS FOR PORTIONS OF THE ABB COMBUSTION ENGINEERING SITE IN WINDSOR, CONNECTICUT DURING THE FALL OF 2011
From the mid-1950s until mid-2000, the Combustion Engineering, Inc. (CE) site in Windsor, Connecticut (Figure A-1) was involved in the research, development, engineering, production, and servicing of nuclear fuels, systems, and services. The site is currently undergoing decommissioning that will lead to license termination and unrestricted release in accordance with the requirements of the License Termination Rule in 10 CFR Part 20, Subpart E. Asea Brown Boveri Incorporated (ABB) has been decommissioning the CE site since 2001.
Date:
December 9, 2011
Creator:
Adams, Wade C.
Object Type:
Report
System:
The UNT Digital Library
DEMONSTRATION OF MIXING AND TRANSFERRING SETTLING COHESIVE SLURRY SIMULANTS IN THE AY-102 TANK
In support of Hanford's waste certification and delivery of tank waste to the Waste Treatment and Immobilization Plant (WTP), Savannah River National Laboratory (SRNL) was tasked by the Washington River Protection Solutions (WRPS) to evaluate the effectiveness of mixing and transferring tank waste in a Double Shell Tank (DST) to the WTP Receipt Tank. The work discussed in this report (Phase III) address the impacts cohesive simulants have on mixing and batch transfer performance. The objective of the demonstrations performed in Phase III was to determine the impact that cohesive particle interactions in the simulants have on tank mixing using 1/22{sup nd} scale mixing system and batch transfer of seed particles. This testing is intended to provide supporting evidence to the assumption that Hanford Small Scale Mixing Demonstration (SSMD) testing in water is conservative. The batch transfers were made by pumping the simulants from the Mixing Demonstration Tank (MDT) to six Receipt Tanks (RTs), and the consistency in the amount of seed particles in each batch was compared. Tests were conducted with non-Newtonian cohesive simulants with Bingham yield stress ranging from 0.3 Pa to 7 Pa. Kaolin clay and 100 {mu}m stainless steel seed particles were used for all the …
Date:
August 4, 2011
Creator:
Adamson, D.
Object Type:
Report
System:
The UNT Digital Library
Accelerator/Experiment Operations - FY 2011
This Technical Memorandum (TM) summarizes the Fermilab accelerator and accelerator experiment operations for FY 2011. It is one of a series of annual publications intended to gather information in one place. In this case, the information concerns the FY 2011 Run II at the Tevatron Collider, the MINOS and MINERvA experiments using the Main Injector Neutrino Beam (NuMI), the MiniBooNE experiment running in the Booster Neutrino Beam (BNB), and the Meson Test Beam (MTest) activities in the 120 GeV external Switchyard beam (SY120).
Date:
November 1, 2011
Creator:
Adamson, P.; Bernardi, G.; Casarsa, M.; Coleman, R.; Denisov, D.; Dixon, R. et al.
Object Type:
Report
System:
The UNT Digital Library
Building Your Congregation Over the Long Haul - Things Learned After 33 Years with One Church
Lecture given Monday, September 19, 2011, 9:00 AM at Abilene Christian University: "There is a lot to consider in leading a church – leadership, growth, community, spiritual formation, outreach. All of us are still learning. Discover lessons learned from both successes and failures in leading a church."
Date:
September 19, 2011
Creator:
Adcox, Jimmy
Object Type:
Sound
System:
The Portal to Texas History
Building Your Congregation Over the Long Haul - Things Learned After 33 Years with One Church
Lecture given Tuesday, September 20, 2011, 8:30 AM at Abilene Christian University: "There is a lot to consider in leading a church – leadership, growth, community, spiritual formation, outreach. All of us are still learning. Discover lessons learned from both successes and failures in leading a church."
Date:
September 20, 2011
Creator:
Adcox, Jimmy
Object Type:
Sound
System:
The Portal to Texas History
Israel: Background and U.S. Relations
This report explores the history of U.S.-Israeli relationships and current Israeli issues such as border security, defense, Israel-Palestinian conflicts, economy, and democracy.
Date:
February 14, 2011
Creator:
Addis, Casey L.
Object Type:
Report
System:
The UNT Digital Library
Lebanon: Background and U.S. Relations
This report provides an overview of Lebanese politics, recent events in Lebanon, and current issues in U.S.-Lebanon relations.
Date:
January 19, 2011
Creator:
Addis, Casey L.
Object Type:
Report
System:
The UNT Digital Library
Lebanon: Background and U.S. Relations. February 2011
This report provides an overview of Lebanese politics, recent events in Lebanon, and current issues in U.S. - Lebanon relation
Date:
February 1, 2011
Creator:
Addis, Casey L.
Object Type:
Report
System:
The UNT Digital Library
U.S. Security Assistance to Lebanon
This report discusses key issues facing U.S. policy makers and members of Congress when considering U.S. security assistance in the context of U.S. policy toward Lebanon. These key issues include assessing the effectiveness of U.S. assistance programs, assessing overall U.S. policy toward Lebanon, and managing relations with other external actors.
Date:
January 19, 2011
Creator:
Addis, Casey L.
Object Type:
Report
System:
The UNT Digital Library
Hezbollah: Background and Issues for Congress
Report that discusses Lebanon's Hezbollah, a Shiite Islamist militia, political party, social welfare organization, and U. S. State Department-designated terrorist organization. The report also discusses recent Hezbollah-related conflicts, Hezbollah's relationship with other Lebanese political parties, and U. S. policy regarding Hezbollah.
Date:
January 3, 2011
Creator:
Addis, Casey L. & Blanchard, Christopher M.
Object Type:
Report
System:
The UNT Digital Library
The Middle East: Selected Key Issues and Options for the 112th Congress
This report provides an overview of key issues, relating to the Middle East including the war in Afghanistan, terrorism, foreign assistance, democracy promotion, a summary of past congressional action on these issues, and options for congressional consideration during the 112th Congress.
Date:
January 3, 2011
Creator:
Addis, Casey L.; Blanchard, Christopher M.; Katzman, Kenneth; Sharp, Jeremy M. & Zanotti, Jim
Object Type:
Report
System:
The UNT Digital Library