196,092 research outputs found
Positive undecidable numberings in the Ershov hierarchy
No full textWe give a su cient condition for an in nite computable family of 1
a sets, to have computable positive but undecidable numberings, where a
is a notation for a nonzero computable ordinal. This extends a theorem
proved by Talasbaeva for the nite levels of the Ershov hierarchy. In par-
ticular the family of all 1 a sets has positive undecidable numberings: this
veri es for all levels of the Ershov hierarchy a conjecture due to Badaev
and Goncharov. We point out also that for every ordinal notation a of a
nonzero ordinal, there are families of 1 a sets having positive numberings,
but no Friedberg numberings: this answers for all levels (whether nite
or in nite) of the Ershov hierarchy, a question originally raised, only for
the nite levels over level 1, by Badaev and Goncharov
Rogers semilattices of families of two embedded sets in the Ershov hierarchy
No full textLet be a Kleene's ordinal notation of a nonzero computable ordinal. We give a sufficient condition on , so that for every --computable family of two embedded sets, i.e. two sets , with properly contained in , the Rogers semilattice of the family is infinite. This condition is
satisfied by every notation of ; moreover every nonzero computable ordinal that is not sum of any two smaller ordinals has a notation that satisfies this condition. On the other hand, we also give a sufficient condition on , that yields that there is a --computable family of two embedded sets, whose Rogers semilattice consists of exactly one
element; this condition is satisfied by all notations of every successor ordinal bigger than , and by all notations of the ordinal ; moreover every computable ordinal that is sum of two smaller ordinals has a notation that satisfies this condition. We also show that for every nonzero
, or , and every notation of a nonzero ordinal there exists a --computable family of cardinality , whose Rogers semilattice consists of exactly one element
Lucy Ara?jo P?rez: Sus aportes al desarrollo Cultural de Manat?
No full textLa literatura es una de las artes m?s antiguas y difundidas a lo largo de la evoluci?n.
Desde un principio traslada al lenguaje una experiencia humana emocional y
significativa, al ser un buen recurso para quebrantar lo mon?tono. La revelaci?n de
sentimientos y emociones que encierran, alienta a cada hombre y mujer y los impulsa
a crear obras relevantes que con todo derecho ocupan un lugar primordial en el
desarrollo cultural de la sociedad.
La presente investigaci?n cient?fica: Lucy Ara?jo P?rez: sus aportes al desarrollo
cultural de Manat?, recoge el quehacer cultural y literario de esta figura emblem?tica
del territorio. Con el objetivo de promocionar su creaci?n art?stica, se elabor? su
historia de vida y se determinaron sus aportes m?s relevantes al desarrollo cultural
de su municipio.
Esta indagaci?n parti? de las categor?as: literatura y desarrollo cultural y se apoy? en
un cuerpo metodol?gico integrado por: ciencia, teor?a, enfoque, perspectivas,
paradigmas, m?todos y t?cnicas. Estos elementos resultaron imprescindibles para
alcanzar los objetivos propuestos.
La historia de vida de Lucy Ara?jo, se confeccion? a partir de palabras testimoniales
expresadas por la escritora, familiares, amigos, as? como criterios y an?cdotas de
figuras literarias del territorio, tanto poetas como investigadores; que distinguen sus
aportes al desarrollo cultural de Manat?
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
Friedberg numberings in the Ershov hierarchy
No full textWe show that for every n 1, there exists a 1n -computable family which up to equivalence has exactly one Friedberg numbering which does not induce the least element of the corresponding Rogers semilattice
"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
Intern experience at CH���M Hill, Inc.: an internship report
No full textIncludes author's vita"Submitted to the College of Engineering of Texas A&M University in partial
fulfillment of the requirement for the degree of Doctor of Engineering."Includes bibliographical referencesA review of the author's internship experience with CH���M HILL, Inc.
during the period September 1975 through May 1976 is presented. During this nine month
internship the author worked as an Engineer II in the Industrial Processes discipline of this
large consulting engineering firm... The author's prime responsibility was as one of three
lead design engineers on the design of a large wastewater treatment facility for a pulp mill
in Hoquiam, Washington owned by ITT Rayonier Inc. The work generally consisted of the design
of individual treatment units and associated piping and pumping. The purpose of the project
was to provide wastewater treatment capabilities that would satisfy the effluent limitations
(standards) imposed upon the mill by the State of Washington Department of Ecology and the
U.S. Environmental Protection Agency. The author's assignment also entailed necessary
interaction with the project manager and other CH���M HILL design engineers and support staff
members, the client's representatives, and representatives of two other consulting engineering
firms working on the project. Thus, the internship position at CH���M HILL provided considerable
experience coordinating the author's work with the work of other engineers, guiding the design
and administrative efforts of a support staff, and interacting regularly with the client and
other consulting firms. This broad exposure to a variety of engineering and organizational
problems provided a valuable educational experience
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