198,075 research outputs found
Image data for: Microrheology of the liquid-solid transition during gelation
No full textThis data set contains fluorescence microscopy images for the microrheology experiments reported in T. H. Larsen and E. M. Furst, “Microrheology of the liquid-solid transition during gelation,” Phys. Rev. Lett. 100, 146001 (2008).
File descriptions:
pa.tar.gz - data for polyacrylamide gels. Polyacrylamide monomer, bis-acrylamide cross-linker, TEMED catalyst, and ammonium persulfate initiator. Stock solutions are made and degassed prior to use. Samples are prepared at 3.0 wt % total acrylamide, including up to 0.1 wt % bis-acrylamide, 0.5 wt % ammonium persulfate, and 0.1% TEMED. Uncompressed size: 29GB
peptide.tar.gz - data for a peptide hydrogelator. The final sample contains 0.15 wt % peptide in pH 8.5 buffer (50 mM BTP). Uncompressed size: 27GB
Fluorescent polystyrene microspheres with diameter 1µm serve as tracer particles in both samples. They have a final concentration of 0.15 v % before gelation is initiated. See Larsen and Furst (2008) for further details.
Each compressed tar file expands into individual folders corresponding to the data time point or composition. The folders contain 800 uncompressed TIFF files (2MB / image). Images are taken at 30 frames per second with a 1 millisecond exposure. The conversion for pixels to micrometers is 40.6 pixels / 10 µm.
This work is marked with CC0 1.0 Universal. To view a copy of this license, visit http://creativecommons.org/publicdomain/zero/1.0Funding for this work was provided by the National Institutes of Health (No. 1 R01 EB003172-01 and No. 2 P20 016472-04) and the Procter and Gamble Company
OptiSMOKE++: A toolbox for optimization of chemical kinetic mechanisms
No full textAs detailed chemical mechanisms are becoming viable for large scale simulations, knowledge and control of the uncertainty correlated to the kinetic parameters are becoming crucial to ensure accurate numerical predictions. A flexible toolbox for the optimization of chemical kinetics has therefore been developed in this work. The toolbox is able to use different optimization methodologies, as well as it can handle a large amount of uncertain parameters simultaneously. It can also handle experimental targets from different sources: Batch reactors, Plug Flow Reactors, Perfectly Stirred Reactors, Rapid Compression Machines and Laminar Flame Speeds. This work presents the different features of this toolbox together with five different test cases which exemplifies these features. Program summary: Program Title: OptiSMOKE++ CPC Library link to program files: https://doi.org/10.17632/tvjky2n8md.1 Licensing provisions: GPLv3 Programming language: C++ Nature of problem: Optimization of uncertain kinetic parameters with respect to experimental data. Solution method: Using the optimization capabilities of DAKOTA [1], and solving reacting systems with OpenSMOKE++ [2], OptiSMOKE++ determines the optimal combination of specified kinetic parameters, within their uncertainty, and with respect to the experimental data. References [1] B. M. Adams, M. S. Ebeida, M. S. Eldred, G. Geraci, J. D. Jakeman, K. A. Maupin, J. A. Monoscheke, L. P. Swiler, J. A. Stephens, D. M. Vigil, T. M. Wildey, W. J. Bohno, K. R. Dalbey, J. P. Eddy, R. W. Hooper, K. T. Hu, P. D. Hough, E. M. Ridgwat, A. Rushdi, Dakota, A Multilevel Parallel Object-Oriented Framework for Design Optimization, Parameter Estimation, Uncertainty Quantification, and Sensitivity Analysis: Version 6.5 User's Manual (2014). [2] A. Cuoci, A. Frassoldati, T. Faravelli, E. Ranzi, OpenSMOKE++: An object-oriented framework for the numerical modeling of reactive systems with detailed kinetic mechanisms, Computer Physics Communications 192 (2015) 237-264. doi:10.1016/j.cpc.2015.02.014
Dr. Duane M. Jackson, Morehouse College, July 2011
No full textThis video is a conversation with Dr. Duane M. Jackson. Dr. Jackson talks about his paper, "Recall and the Serial Position Effect: The Role of Primacy and Recency on Accounting Students' Performance." Jackie Daniel, AUC Woodruff Library, is the interviewer
"Reflections on the subject of Emigration from Europe with a view to Settlement in the United States" By M. Carey.
No full text"Reflections on the subject of Emigration from Europe with a view to Settlement in the United States: containing bried sketches of the moral and political character of those states.
By M. Carey, member of the American philosophical, and of the American Antiquarian Society, and author of The Olive Branch, Cindiciae Hibernicae, essays on banking, on political economy, and on internal improvement.
To which are now added the English editor's comments on the subject; together with Important Advice to Emigrants, and Cautions Against Impositions Practiced in the Outports
Dispelling the Myths Behind First-author Citation Counts
No full textWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
Dr. Glendon Swarthout
No full textHosted by Roger M. Busfield, MSU Assistant Professor of Speech and Theater, Meet the Author is designed to introduce a general audience to a contemporary author and their work through in-depth interviews. This episode features a conversation between Dr. Glendon Swarthout, prolific author and English professor at MSU, and assistant professors Sam S. Baskett and Theodore B. Strandness
Simulation of thermal plant optimization and hydraulic aspects of thermal distribution loops for large campuses
No full textFollowing an introduction, the author describes Texas A&M University and its utilities system. After that, the author presents how to construct simulation models for chilled water and heating hot water distribution systems. The simulation model was used in a $2.3 million Ross Street chilled water pipe replacement project at Texas A&M University. A second project conducted at the University of Texas at San Antonio was used as an example to demonstrate how to identify and design an optimal distribution system by using a simulation model. The author found that the minor losses of these closed loop thermal distribution systems are significantly higher than potable water distribution systems. In the second part of the report, the author presents the latest development of software called the Plant Optimization Program, which can simulate cogeneration plant operation, estimate its operation cost and provide optimized operation suggestions. The author also developed detailed simulation models for a gas turbine and heat recovery steam generator and identified significant potential savings. Finally, the author also used a steam turbine as an example to present a multi-regression method on constructing simulation models by using basic statistics and optimization algorithms. This report presents a survey of the author??s working experience at the Energy Systems Laboratory (ESL) at Texas A&M University during the period of January 2002 through March 2004. The purpose of the above work was to allow the author to become familiar with the practice of engineering. The result is that the author knows how to complete a project from start to finish and understands how both technical and nontechnical aspects of a project need to be considered in order to ensure a quality deliverable and bring a project to successful completion. This report concludes that the objectives of the internship were successfully accomplished and that the requirements for the degree of Degree of Engineering have been satisfied
Política monetaria y metas de inflación en América Latina
No full textMediante el presente trabajo se aporta una nueva evidencia a la teoría que explica que la implementación de metas de inflación como instrumento de la política monetaria de los países mejora el desempeño macroeconómico en estos. Para ello, se analizó hasta qué punto la adopción de este programa mejoró algunas de las principales variables económicas de aquellos países de América Latina que lograron llevarlo a cabo y evaluar los resultados en contraste con los que no lo hicieron, teniendo en cuenta que al pertenecer a la misma región pueden compartir, en algunos casos, idiosincrasias y características institucionales. Para analizar el impacto de la fijación de metas en los niveles y variabilidad de la inflación, tasas de interés y crecimiento (PIB), se utilizó el método Diferencias en Diferencias (Ball y Sheridan, 2005), el cual mediante la utilización de datos de panel de las variables indicadas permite medir el efecto en comparación con los países que no han aplicado el esquema. Se comprobó que las metas contribuyeron a reducir los niveles y variabilidad de la inflación y de la tasa de interés, y en el caso del crecimiento sólo se encontró evidencias en la reducción de su variabilidad.Fil: Costilla, Walter. Universidad Nacional de San Martín. Escuela de Economía y Negocios; Buenos Aires, ArgentinaFil: Furst, Ricardo. Universidad Nacional de San Martín. Escuela de Economía y Negocios; Buenos Aires, Argentin
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