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11,754 Matching Results
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Summary: Oral History of Nora Lopez, Metro Editor at the San Antonio Express News
This article is a short biography of Nora Lopez describing her background and her career working on newspapers, starting in high school.
Date:
March 2019
Creator:
Aguilar, Rebecca
Object Type:
Article
System:
The Portal to Texas History
Oral History Interview with Jessie Degollado, March 9, 2019
Interview with Jessie Degollado, a reporter at KSAT 12 News in San Antonio. She discusses her family and growing up in Laredo, Texas, as well as her education at Baylor University and her career in the news.
Date:
March 9, 2019
Creator:
Aguilar, Rebecca & Degollado, Jessie
Object Type:
Text
System:
The Portal to Texas History
Oral History Interview with Bernice Kearney, March 8, 2019
Interview with Bernice Kearney, the news director at KSAT 12 News in San Antonio. She discusses her background and career as a news producer.
Date:
March 8, 2019
Creator:
Aguilar, Rebecca & Kearney, Bernice
Object Type:
Text
System:
The Portal to Texas History
Oral History Interview with Nora Lopez, March 8, 2019
Interview with Nora Lopez, metro editor at the San Antonio Express News newspaper. She discusses her childhood and visiting family regularly in Mexico, as well as becoming an American citizen in 2008. She also talks about her education and her career in newspaper journalism.
Date:
March 8, 2019
Creator:
Aguilar, Rebecca & Lopez, Nora
Object Type:
Text
System:
The Portal to Texas History
Giant cross-magnetic-field steps due to binary collisions between pair particles
Article explores giant cross-magnetic-field steps which occur as a result of positron-electron collisions. Within a constant magnetic field (e.g., 1 T), a collision between a positron and an electron can result in a correlated drift across the magnetic field for a continuous range of impact parameters. Within this range, drift distances orders of magnitude larger than that associated with like-charge collisions were observed by computer simulation.
Date:
March 5, 2015
Creator:
Aguirre, F. F. & Ordonez, Carlos A.
Object Type:
Article
System:
The UNT Digital Library
Europe's Preferential Trade Agreements: Status, Content, and Implications
The first section of this report describes the status and primary motivations of the EU's preferential trade agreements (PTAs) currently in place or under negotiation. The second compares the content and trade coverage of Europe's PTAs to U.S. PTAs. A third section assesses the implications of the EU's PTA program for the multilateral trading system and U.S. trade policy. A concluding section evaluates future directions for Europe's PTA policy.
Date:
March 22, 2010
Creator:
Ahearn, Raymond J.
Object Type:
Report
System:
The UNT Digital Library
Europe's Preferential Trade Agreements: Status, Content, and Implications
This report explores intersecting issues regarding Europe's preferential trade agreements (PTA) in three parts. The first section discusses the status and primary motivations of the EU's PTAs currently in place or under negotiation. The second compares the content and trade coverage of Europe's PTAs to U.S. PTAs. A third section assesses the implications of the EU's PTA program for the multilateral trading system and U.S. trade policy. A concluding section evaluates future directions for Europe's PTA policy.
Date:
March 3, 2011
Creator:
Ahearn, Raymond J.
Object Type:
Report
System:
The UNT Digital Library
Transatlantic Regulatory Cooperation: Background and Analysis
This report discusses commercial ties between the United States and the 27-member European Union. These ties are substantial, growing, and mutually beneficial, but differences in regulatory approaches limit an even more integrated marketplace from developing. This report is intended to serve as an introduction and primer on this complicated, broad, and often highly technical set of issues.
Date:
March 7, 2011
Creator:
Ahearn, Raymond J.
Object Type:
Report
System:
The UNT Digital Library
Evaluation of Three Major Emission Sources on DFW Ozone Level Using Photochemical Modeling
Poster for the 2015 University of North Texas (UNT) Graduate Exhibition. This poster discusses the evaluation of three major emission sources on the Dallas-Fort Worth ozone levels using photochemical modeling.
Date:
March 7, 2015
Creator:
Ahmadi, Mahdi & John, Kuruvilla
Object Type:
Poster
System:
The UNT Digital Library
Tutorial of Wind Turbine Control for Supporting Grid Frequency through Active Power Control: Preprint
As wind energy becomes a larger portion of the world's energy portfolio and wind turbines become larger and more expensive, wind turbine control systems play an ever more prominent role in the design and deployment of wind turbines. The goals of traditional wind turbine control systems are maximizing energy production while protecting the wind turbine components. As more wind generation is installed there is an increasing interest in wind turbines actively controlling their power output in order to meet power setpoints and to participate in frequency regulation for the utility grid. This capability will be beneficial for grid operators, as it seems possible that wind turbines can be more effective at providing some of these services than traditional power plants. Furthermore, establishing an ancillary market for such regulation can be beneficial for wind plant owner/operators and manufacturers that provide such services. In this tutorial paper we provide an overview of basic wind turbine control systems and highlight recent industry trends and research in wind turbine control systems for grid integration and frequency stability.
Date:
March 1, 2012
Creator:
Aho, J.; Buckspan, A.; Laks, J.; Fleming, P.; Jeong, Y.; Dunne, F. et al.
Object Type:
Article
System:
The UNT Digital Library
International shock-wave database project : report of the requirements workshop.
We report on the requirements workshop for a new project, the International Shock-Wave database (ISWdb), which was held October 31 - November 2, 2011, at GSI, Darmstadt, Germany. Participants considered the idea of this database, its structure, technical requirements, content, and principles of operation. This report presents the consensus conclusions from the workshop, key discussion points, and the goals and plan for near-term and intermediate-term development of the ISWdb. The main points of consensus from the workshop were: (1) This international database is of interest and of practical use for the shock-wave and high pressure physics communities; (2) Intermediate state information and off-Hugoniot information is important and should be included in ISWdb; (3) Other relevant high pressure and auxiliary data should be included to the database, in the future; (4) Information on the ISWdb needs to be communicated, broadly, to the research community; and (5) Operating structure will consist of an Advisory Board, subject-matter expert Moderators to vet submitted data, and the database Project Team. This brief report is intended to inform the shock-wave research community and interested funding agencies about the project, as its success, ultimately, depends on both of these groups finding sufficient value in the database to …
Date:
March 1, 2012
Creator:
Aidun, John Bahram (Institute of Problems of chemical Physics of Russian Academy of Sciences); Lomonosov, Igor V. (Institute of Problems of chemical Physics of Russian Academy of Sciences) & Levashov, Pavel R. (Joint Institute for High Temperatures of Russian Academy of Sciences)
Object Type:
Report
System:
The UNT Digital Library
Constraints on Dark Matter Models From a Fermi LAT Search for High-Energy Cosmic-Ray Electrons from the Sun
None
Date:
March 19, 2013
Creator:
Ajello, M.; Atwood, W. B.; Baldini, L.; Barbiellini, G.; Bastieri, D.; Bellazzini, R. et al.
Object Type:
Article
System:
The UNT Digital Library
Offshore Wind Turbines Estimated Noise from Offshore Wind Turbine, Monhegan Island, Maine Addendum 2
Additional modeling for offshore wind turbines, for proposed floating wind platforms to be deployed by University of Maine/DeepCwind.
Date:
March 1, 2011
Creator:
Aker, Pamela M.; Jones, Anthony M. & Copping, Andrea E.
Object Type:
Report
System:
The UNT Digital Library
Creating Jobs through Energy Efficiency Using Wisconsin's Successful Focus on Energy Program
The purpose of this project was to provide administrative and technical support for the completion of energy efficiency projects that reduce energy intensity and create or save Wisconsin industrial jobs. All projects have been completed. Details in the attached reports include project management, job development, and energy savings for each project.
Date:
March 30, 2012
Creator:
Akhtar, Masood; Corrigan, Edward & Reitter, Thomas
Object Type:
Report
System:
The UNT Digital Library
Export-Import Bank: Overview and Reauthorization Issues
This report provides: a general background of Export-Import (Ex-Im) Bank; a discussion of the international context of the Bank; analysis of key issues that Congress may consider in a reauthorization debate; and the congressional outlook on Ex-Im Bank.
Date:
March 25, 2015
Creator:
Akhtar, Shayerah Ilias
Object Type:
Report
System:
The UNT Digital Library
U.S. Trade and Investment in the Middle East and North Africa: Overview and Issues for Congress
This report provides background and analysis for policymakers considering re-evaluating U.S. trade and investment in the Middle East and North Africa (MENA) region in light of recent political developments. In particular, the report examines the economic challenges facing many countries in the region and the area's limited integration in the world economy, including relatively weak economic ties with the United States. It also analyzes various policy options for increasing trade and investment with MENA countries. The report concludes by discussing: 1) the premise of the policy agenda, specifically whether increased trade and investment can support or lead to successful democratic transitions and political stability; and 2) if such a policy agenda is pursued, possible implementation questions that policymakers in Congress and the Administration may face.
Date:
March 4, 2013
Creator:
Akhtar, Shayerah Ilias; Bolle, Mary Jane & Nelson, Rebecca M.
Object Type:
Report
System:
The UNT Digital Library
Status Report of the DPHEP Study Group: Towards a Global Effort for Sustainable Data Preservation in High Energy Physics
None
Date:
March 27, 2013
Creator:
Akopov, Zaven; Amerio, Silvia; Asner, David; Avetisyan, Eduard; Barring, Olof; Beacham, James et al.
Object Type:
Article
System:
The UNT Digital Library
Correlations of Capacitance-Voltage Hysteresis with Thin-Film CdTe Solar Cell Performance During Accelerated Lifetime Testing
In this paper we present the correlation of CdTe solar cell performance with capacitance-voltage hysteresis, defined presently as the difference in capacitance measured at zero-volt bias when collecting such data with different pre-measurement bias conditions. These correlations were obtained on CdTe cells stressed under conditions of 1-sun illumination, open-circuit bias, and an acceleration temperature of approximately 100 degrees C.
Date:
March 1, 2011
Creator:
Albin, D. & del Cueto, J.
Object Type:
Article
System:
The UNT Digital Library
Effect of Hysteresis on Measurements of Thin-Film Cell Performance
Transient or hysteresis effects in polycrystalline thin film CdS/CdTe cells are a function of pre-measurement voltage bias and whether Cu is introduced as an intentional dopant during back contact fabrication. When Cu is added, the current-density (J) vs. voltage (V) measurements performed in a reverse-to-forward voltage direction will yield higher open-circuit voltage (Voc), up to 10 mV, and smaller short-circuit current density (Jsc), by up to 2 mA/cm2, relative to scanning voltage in a forward-to-reverse direction. The variation at the maximum power point, Pmax, is however small. The resulting variation in FF can be as large as 3%. When Cu is not added, hysteresis in both Voc and Jsc is negligible however Pmax hysteresis is considerably greater. This behavior corroborates observed changes in depletion width, Wd, derived from capacitance (C) vs voltage (V) scans. Measured values of Wd are always smaller in reverse-to-forward voltage scans, and conversely, larger in the forward-to-reverse voltage direction. Transient ion drift (TID) measurements performed on Cu-containing cells do not show ionic behavior suggesting that capacitance transients are more likely due to electronic capture-emission processes. J-V curve simulation using Pspice shows that increased transient capacitance during light-soak stress at 100 degrees C correlates with increased space-charge …
Date:
March 1, 2011
Creator:
Albin, D. & del Cueto, J.
Object Type:
Article
System:
The UNT Digital Library
Use of 2nd and 3rd Level Correlation Analysis for Studying Degradation in Polycrystalline Thin-Film Solar Cells
The correlation of stress-induced changes in the performance of laboratory-made CdTe solar cells with various 2nd and 3rd level metrics is discussed. The overall behavior of aggregated data showing how cell efficiency changes as a function of open-circuit voltage (Voc), short-circuit current density (Jsc), and fill factor (FF) is explained using a two-diode, PSpice model in which degradation is simulated by systematically changing model parameters. FF shows the highest correlation with performance during stress, and is subsequently shown to be most affected by shunt resistance, recombination and in some cases voltage-dependent collection. Large decreases in Jsc as well as increasing rates of Voc degradation are related to voltage-dependent collection effects and catastrophic shunting respectively. Large decreases in Voc in the absence of catastrophic shunting are attributed to increased recombination. The relevance of capacitance-derived data correlated with both Voc and FF is discussed.
Date:
March 1, 2011
Creator:
Albin, D. S.; del Cueto, J. A.; Demtsu, S. H. & Bansal, S.
Object Type:
Article
System:
The UNT Digital Library
A Brief Literature Overview of Various Routes to Biorenewable Fuels from Lipids for the National Alliance for Advanced Biofuels and Bio-products (NAABB) Consortium
Renewable methods of producing transportation fuels are currently the focus of numerous large research efforts across the globe. Renewable fuel produced from algal lipids is one aspect of this research that could have profound implications on future transportation fuel requirements. However, technical challenges remain in several areas of algal-lipid-based fuels. These challenges include the identification and development of robust and productive algal species as well as extraction methods to recover the produced lipids. Not the least of these technical challenges is the conversion of the algae lipids to fungible fuels. This brief literature review focuses primarily on state-of-the-art “downstream” applications of producing fuel from fats and lipids, which can be applied to ongoing research with algae-derived lipids.
Date:
March 29, 2011
Creator:
Albrecht, Karl O. & Hallen, Richard T.
Object Type:
Report
System:
The UNT Digital Library
TOWARD AN IMPROVED UNDERSTANDING OF STRUCTURE AND MAGNETISM IN NEPTUNIUM AND PLUTONIUM PHOSPHONATES AND SULFONATES
This grant supported the exploratory synthesis of new actinide materials with all of the actinides from thorium to californium with the exceptions of protactinium and berkelium. We developed detailed structure-property relationships that allowed for the identification of novel materials with selective ion-exchange, selective oxidation, and long-range magnetic ordering. We found novel bonding motifs and identified periodic trends across the actinide series. We identified structural building units that would lead to desired structural features and novel topologies. We also characterized many different spectroscopic trends across the actinide series. The grant support the preparation of approximately 1200 new compounds all of which were structurally characterized.
Date:
March 1, 2012
Creator:
Albrecht-Schmitt, Thomas
Object Type:
Text
System:
The UNT Digital Library
The Colony Courier-Leader (The Colony, Tex.), Vol. 33, No. 8, Ed. 1 Sunday, March 23, 2014
Weekly newspaper from The Colony, Texas that includes local, state, and national news along with advertising.
Date:
March 23, 2014
Creator:
Aldaz, Gina
Object Type:
Newspaper
System:
The Portal to Texas History
The Colony Courier-Leader (The Colony, Tex.), Vol. 33, No. 9, Ed. 1 Sunday, March 30, 2014
Weekly newspaper from The Colony, Texas that includes local, state, and national news along with advertising.
Date:
March 30, 2014
Creator:
Aldaz, Gina
Object Type:
Newspaper
System:
The Portal to Texas History