196,630 research outputs found
A comment on the measurement of neutrino masses in β-decay experiments
No full textAbstractWe discuss the physics potential of future tritium β-decay experiments having a sensitivity to a neutrino mass ∼|Δm232|∼5×10−2 eV. The case of three-neutrino mixing is analyzed. A negative result of such an experiment would imply that the neutrino mass spectrum is of normal hierarchical type. The interpretation of a positive result would depend on the value of the lightest neutrino mass; if the lightest neutrino mass satisfies the inequality min(mj)≪|Δm232|, it would imply that the neutrino mass spectrum is of the inverted hierarchical type
The h-vector of a standard determinantal scheme
No full textIn this dissertation we study the h-vector of a standard determinantal scheme
via the corresponding degree matrix. We find simple
formulae for the length and the last entries of the h-vector, as well as an
explicit formula for the h-polynomial. We also describe a recursive formula for
the h-vector in terms of h-vectors corresponding to submatrices of the degree
matrix of X. In codimension three we show that when the largest entry in the
degree matrix of X is sufficiently large and the first subdiagonal is entirely
positive the h-vector of X is of decreasing type.
We prove that if a standard determinantal scheme is level, then its h-vector is
a log-concave pure O-sequence, and conjecture that the converse also holds.
Among other cases, we prove the conjecture in codimension two, or when the
entries of the corresponding degree matrix are positive.
We further investigate the combinatorial structure of the poset
consisting of h-vectors of length s, of codimension c
standard determinantal schemes, having degree matrices of size
for some . We show that
obtains a natural
stratification, where each strata contains a maximum h-vector. We prove
furthermore, that the only strata in which there exists also a minimum h-vector
is the one consisting of h-vectors of level standard determinantal schemes.
We also study posets of h-vectors of standard determinantal ideals, which arise
from a matrix M, where the entries in each row have the same degree, and show
the existence of a minimum and a maximum h-vector
Experimental investigation of the ion induced l=2 diocotron instability in an electron plasma
No full textDr. 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
Experimental investigation of the dynamics of low energy electron bunches in a Malmberg-Penning trap
No full textSimulation 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
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