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## Herramientas de software para OAI-PMH

Fonte: Rojas Eberhard (Colombia)
Publicador: Rojas Eberhard (Colombia)

Tipo: Parte de Livro
Formato: application/pdf

Publicado em //2007
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#OAI-PMH#Software#Recolección de metadatos#Archivos abiertos#Metadata harvesting#Open Archives Initiative#Biblioteconomía y Documentación

Tanto para poner en marcha proveedores de datos como proveedores de servicios o agregadores, es importante conocer cuáles son las alternativas de software entre las que elegir. Aunque en los capítulos anteriores se dan algunas indicaciones, se ha considerado oportuno dedicar el capítulo 8, “Herramientas de software para OAI-PMH”, a elaborar una descripción de las principales aplicaciones empleadas en la actualidad. Tras una primera introducción sobre la diferencia entre software libre, software de código abierto y software propietarios, se muestran las principales herramientas de software libre empleadas para la creación de repositorios, la generación de proveedores de datos que no son repositorios en sí, la recogida de metadatos mediante recolectores y proveedores de servicios; y, por último, otras herramientas que soportan OAI-PMH. En primer lugar, se describen las principales herramientas de software para la creación de repositorios. Básicamente, todas ellas deben cumplir algunos requisitos: Soportar el flujo documental: introducción de documentos; rechazo o aceptación de los mismos por los administradores del repositorio; edición de los -metadatos sobre los recursos, etc. Ofrecer para estas acciones diferentes niveles de acceso: usuario...

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## New Workflows and Tools for ETD Support at the University of Florida

Fonte: USETDA 2014; USETDA 2014
Publicador: USETDA 2014; USETDA 2014

Tipo: mixed material
Formato: Conference Papers

Publicado em //2014
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(Acquisition) Collected for University of Florida's Institutional Repository by the UFIR Self-Submittal tool. Submitted by Mark Sullivan.; (Publication Status) Published

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## Documenting the Creative Mind: ETDs in the Fine Arts and Design

Fonte: Universidade da Flórida
Publicador: Universidade da Flórida

Tipo: mixed material
Formato: Poster

Publicado em //2011
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(Acquisition) Collected for University of Florida's Institutional Repository by the UFIR Self-Submittal tool. Submitted by Ann Lindell.; (Publication Status) Unpublished; Poster session presented at the United States Electronic Thesis and Dissertation Association (USETDA) Conference, Orlando FL, May 19, 2011.

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## Queen’s University E-thesis Service

Fonte: Quens University
Publicador: Quens University

Tipo: Conferência ou Objeto de Conferência

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#electronic theses and disserations (ETDs)#theses and disserations#MS-Word templates#graduate student instruction

A presentation on the support services provided by the Library to Queen's University graduate students in preparing, formatting and submitting their electronic theses and dissertations. The major focus of the presentation was the ETD template service.

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## An assessment on DNA microarray and sequence-based methods for the characterization of methicillin-susceptible Staphylococcus aureus from Nigeria

Fonte: Frontiers Media S.A.
Publicador: Frontiers Media S.A.

Tipo: Artigo de Revista Científica

Publicado em 20/10/2015
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Staphylococcus aureus is an important human pathogen causing nosocomial and community-acquired infections worldwide. In the characterization of this opportunistic pathogen, DNA microarray hybridization technique is used as an alternative to sequence based genotyping to obtain a comprehensive assessment on the virulence, resistance determinants, and population structure. The objective of this study was to characterize a defined collection of S. aureus isolates from Nigeria using the microarray technique, and to assess the extent that it correlates with sequence-based genotyping methods. The clonal diversity and genomic content of 52 methicillin-susceptible Staphylococcus aureus (MSSA) were investigated by spa typing, MLST and DNA microarray hybridization. More than half (55.8%) of these isolates were associated with clonal complexes (CCs) typically associated with methicillin-resistant S. aureus (MRSA) clones i.e., CC1, CC5, CC8, CC30, and CC45. Certain genes linked with virulence (hlgA and clfA) and adherence (ebpS, fnbA, sspA, sspB, and sspP) were detected in all isolates. A number of genes or gene clusters were associated with distinct clonal types. The enterotoxin gene cluster (egc) was linked with CC5, CC25, CC30, CC45, and CC121...

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## Precision mapping of the human O-GalNAc glycoproteome through SimpleCell technology

Fonte: Nature Publishing Group
Publicador: Nature Publishing Group

Tipo: Artigo de Revista Científica

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Glycosylation is the most abundant and diverse posttranslational modification of proteins. While several types of glycosylation can be predicted by the protein sequence context, and substantial knowledge of these glycoproteomes is available, our knowledge of the GalNAc-type O-glycosylation is highly limited. This type of glycosylation is unique in being regulated by 20 polypeptide GalNAc-transferases attaching the initiating GalNAc monosaccharides to Ser and Thr (and likely some Tyr) residues. We have developed a genetic engineering approach using human cell lines to simplify O-glycosylation (SimpleCells) that enables proteome-wide discovery of O-glycan sites using ‘bottom-up' ETD-based mass spectrometric analysis. We implemented this on 12 human cell lines from different organs, and present a first map of the human O-glycoproteome with almost 3000 glycosites in over 600 O-glycoproteins as well as an improved NetOGlyc4.0 model for prediction of O-glycosylation. The finding of unique subsets of O-glycoproteins in each cell line provides evidence that the O-glycoproteome is differentially regulated and dynamic. The greatly expanded view of the O-glycoproteome should facilitate the exploration of how site-specific O-glycosylation regulates protein function.

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## Identification of Human Serum Peptides in Fourier Transform Ion Cyclotron Resonance Precision Profiles

Fonte: Hindawi Publishing Corporation
Publicador: Hindawi Publishing Corporation

Tipo: Artigo de Revista Científica

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The continuous efforts to find new prognostic or diagnostic biomarkers have stimulated the use of mass spectrometry (MS) profiles in a clinical setting. In the early days (about one decade ago), a single low-resolution mass spectrum derived from an individual's body fluid was used for comparative studies. However, a peptide profile of a complex mixture is most informative when recorded on an ultrahigh resolution instrument such as a Fourier transform ion cyclotron resonance (FTICR) mass spectrometer. In this study we show the benefits of the ultrahigh resolving power and the high mass accuracy and precision provided by an FTICR mass spectrometer equipped with a 15-tesla magnet. The ultrahigh-resolution data not only allow assignment of fragment ions with high charge states (4+, 5+) but also enhance confidence of human serum peptide identifications from tandem MS experiments. This is exemplified with collision-induced dissociation (CID) and electron transfer dissociation (ETD) data of middle-down-sized endogenous or protein-breakdown peptides that are of interest in biomarker discovery studies.

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## Combined Skin Moisturization of Liposomal Serine Incorporated in Hydrogels Prepared with Carbopol ETD 2020, Rhesperse RM 100 and Hyaluronic Acid

Fonte: The Korean Physiological Society and The Korean Society of Pharmacology
Publicador: The Korean Physiological Society and The Korean Society of Pharmacology

Tipo: Artigo de Revista Científica

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We investigated the combined moisturizing effect of liposomal serine and a cosmeceutical base selected in this study. Serine is a major amino acid consisting of natural moisturizing factors and keratin, and the hydroxyl group of serine can actively interact with water molecules. Therefore, we hypothesized that serine efficiently delivered to the stratum corneum (SC) of the skin would enhance the moisturizing capability of the skin. We prepared four different cosmeceutical bases (hydrogel, oil-in-water (O/W) essence, O/W cream, and water-in-oil (W/O) cream); their moisturizing abilities were then assessed using a Corneometer®. The hydrogel was selected as the optimum base for skin moisturization based on the area under the moisture content change-time curves (AUMCC) values used as a parameter for the water hold capacity of the skin. Liposomal serine prepared by a reverse-phase evaporation method was then incorporated in the hydrogel. The liposomal serine-incorporated hydrogel (serine level=1%) showed an approximately 1.62~1.77 times greater moisturizing effect on the skin than those of hydrogel, hydrogel with serine (1%), and hydrogel with blank liposome. However, the AUMCC values were not dependent on the level of serine in liposomal serine-loaded hydrogels. Together...

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## Abelian categories in dimension 2

Fonte: Universidade Cornell
Publicador: Universidade Cornell

Tipo: Artigo de Revista Científica

Publicado em 10/09/2008
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The goal of this thesis is to define a 2-dimensional version of abelian
categories, where symmetric 2-groups play the role that abelian groups played
in 1-dimensional algebra. Abelian and 2-abelian groupoid enriched categories
are defined and it is proved that homology can be developed in them, including
the existence of a long exact sequence of homology corresponding to an
extension of chain complexes. This generalises known results for symmetric
2-groups. The examples include, in addition to symmetric 2-groups, the
2-modules on a 2-ring, which form a 2-abelian groupoid enriched category.
Moreover, internal groupoids, functors and natural transformations in an
abelian category C (in particular, Baez-Crans 2-vector spaces) form a 2-abelian
groupoid enriched category if and only if the axiom of choice holds in C.; Comment: x + 268 pages. This is the English version of my PhD thesis; the
original French version is available at
http://edoc.bib.ucl.ac.be:81/ETD-db/collection/available/BelnUcetd-06112008-231800/

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## On the Physical Explanation for Quantum Computational Speedup

Fonte: Universidade Cornell
Publicador: Universidade Cornell

Tipo: Artigo de Revista Científica

Publicado em 31/03/2013
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The aim of this dissertation is to clarify the debate over the explanation of
quantum speedup and to submit a tentative resolution to it. In particular, I
argue that the physical explanation for quantum speedup is precisely the fact
that the phenomenon of quantum entanglement enables a quantum computer to fully
exploit the representational capacity of Hilbert space. This is impossible for
classical systems, joint states of which must always be representable as
product states.
Chapter 2 begins with a discussion of the most popular of the candidate
physical explanations for quantum speedup: the many worlds explanation. I argue
that unlike the neo-Everettian interpretation of quantum mechanics it does not
have the conceptual resources required to overcome the `preferred basis
objection'. I further argue that the many worlds explanation, at best, can
serve as a good description of the physical process which takes place in
so-called network-based computation, but that it is incompatible with other
models of computation such as cluster state quantum computing. I next consider,
in Chapter 3, a common component of most other candidate explanations of
quantum speedup: quantum entanglement. I investigate whether entanglement can
be said to be a necessary component of any explanation for quantum speedup...

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## Relaxation of interstitials in spherical colloidal crystals

Fonte: Universidade Cornell
Publicador: Universidade Cornell

Tipo: Artigo de Revista Científica

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Spherical colloidal crystals (CCs) self-assemble on the interface between two
liquids. These 2D structures unconventionally combine local hexagonal order and
spherical geometry. Nowadays CCs are actively studied by altering their
structures. However, the statistical analysis of such experiments results is
limited by uniqueness of self-assembled structures and their short lifetime.
Here we perform numerical experiments to investigate pathways of CC structure
relaxation after the intrusion of interstitial. The process is simulated in the
frames of overdamped molecular dynamics method. The relaxation occurs due to
interaction with extended topological defects (ETDs) mandatory induced in
spherical CCs by their intrinsic Gaussian curvature. Types of relaxation
pathways are classified and their probabilities are estimated in the
low-temperature region. To analyze the structural changes during the relaxation
we use a parent phase approach allowing us to describe the global organization
of spherical order. This organization is preserved by only the most typical
relaxation pathway resulting in filling one of vacancies integrated inside the
ETD areas. In contrast with this pathway the other ones shift the ETDs centers
and can strongly reconstruct the internal structure of ETDs. Temperature
dependence of the relaxation processes and the mechanism of dislocation
unbinding are discussed. Common peculiarities in relaxation of spherical
structures and particular fragments of planar hexagonal lattice are found.; Comment: 12 pages...

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## QCD Structure of Nuclear Interactions

Fonte: Universidade Cornell
Publicador: Universidade Cornell

Tipo: Artigo de Revista Científica

Publicado em 24/08/2011
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#Nuclear Theory#High Energy Physics - Experiment#High Energy Physics - Phenomenology#Nuclear Experiment

This dissertation investigated selected processes involving baryons and
nuclei in hard scattering reactions. Through these processes, this work
explored the constituent structure of baryons and the mechanisms through which
the interactions between these constituents ultimately control the selected
reactions. First, hard nucleon-nucleon elastic scattering was studied
considering the quark exchange (QE) between the nucleons to be the dominant
mechanism of interaction in the constituent picture. It was found that an
angular asymmetry exhibited by proton-neutron (pn) elastic scattering data is
explained within this framework if a quark-diquark picture dominates the
nucleon's structure instead of a more traditional SU(6) model. The latter
yields an asymmetry around 90 deg center of mass scattering with a sign
opposite to what is experimentally observed. The second process is the hard
breakup by a photon of a nucleon-nucleon system in light nuclei. Proton-proton
(pp) and pn breakup in 3He, and double Delta-isobars production in deuteron
breakup were analyzed in the hard rescattering model (HRM), which in
conjunction with the QE mechanism provides a QCD description of the reaction.
Cross sections for both channels in 3He photodisintegration were computed
without the need of a fitting parameter. The results presented here for pp
breakup show excellent agreement with recent experimental data. In double
Delta-isobars production in deuteron breakup...

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## Structures in 3D double-diffusive convection and possible approach to the Saturn's polar hexagon modeling

Fonte: Universidade Cornell
Publicador: Universidade Cornell

Tipo: Artigo de Revista Científica

Publicado em 12/05/2014
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Three-dimensional double-diffusive convection in a horizontally infinite
layer of an uncompressible fluid interacting with horizontal vorticity field is
considered in the neighborhood of Hopf bifurcation points. A family of
amplitude equations for variations of convective cells amplitude is derived by
multiple-scaled method. Shape of the cells is given as a superposition of a
finite number of convective rolls with different wave vectors. For numerical
simulation of the obtained systems of amplitude equations a few numerical
schemes based on modern ETD (exponential time differencing) pseudo-spectral
methods were developed. The software packages were written for simulation of
roll-type convection and convection with square and hexagonal type cells.
Numerical simulation has showed that the convection takes the form of elongated
"clouds", "spots" or "filaments". It was noted that in the system quite rapidly
a state of diffusive chaos is developed, where the initial symmetric state is
destroyed and the convection becomes irregular both in space and time. The
obtained results may be the basis for the construction of more advanced models
of multi-component convection, for instance, model of Saturn's polar hexagon.; Comment: 11 pages, 6 figures

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## QCD Sum Rule Studies of Heavy Quarkonium-like States

Fonte: Universidade Cornell
Publicador: Universidade Cornell

Tipo: Artigo de Revista Científica

Publicado em 08/07/2014
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The research presented here uses QCD sum rules (QSR) to study exotic hadrons.
There are several themes in this work. First is the use of QSR to predict the
masses of exotic hadrons that may exist among the heavy quarkonium-like states.
The second theme is the application of sophisticated loop integration methods
in order to obtain more complete theoretical results. These in turn can be
extended to higher orders in the perturbative expansion in order to predict the
properties of exotic hadrons more accurately. The third theme involves
developing a renormalization methodology for these higher order calculations.
This research has implications for the $Y(3940)$, $X(3872)$,
$Z_c^\pm\left(3895\right)$, $Y_b\left(10890\right)$, $Z_b^{\pm}(10610)$ and
$Z_b^{\pm}(10650)$ particles, thereby contributing to the ongoing effort to
understand these and other heavy quarkonium-like states.; Comment: PhD thesis (University of Saskatchewan, September 2013), based on
arXiv:1206.6776, arXiv:1204.0049, arXiv:1304.7816, arXiv:1010.2971 and
arXiv:0804.2195. This is an abridged version with links to preprints and
published articles. Full version at
http://hdl.handle.net/10388/ETD-2012-09-1319 . 124 pages, 18 figures

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## Exoplanet Transit Database. Reduction and processing of the photometric data of exoplanet transits

Fonte: Universidade Cornell
Publicador: Universidade Cornell

Tipo: Artigo de Revista Científica

Publicado em 14/09/2009
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We demonstrate the newly developed resource for exoplanet researchers - The
Exoplanet Transit Database. This database is designed to be a web application
and it is open for any exoplanet observer. It came on-line in September 2008.
The ETD consists of three individual sections. One serves for predictions of
the transits, the second one for processing and uploading new data from the
observers. We use a simple analytical model of the transit to calculate the
central time of transit, its duration and the depth of the transit. These
values are then plotted into the observed - computed diagrams (O-C), that
represent the last part of the application.; Comment: Accepted to NewAstronomy

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## On Convergence of Emphatic Temporal-Difference Learning

Fonte: Universidade Cornell
Publicador: Universidade Cornell

Tipo: Artigo de Revista Científica

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We consider emphatic temporal-difference learning algorithms for policy
evaluation in discounted Markov decision processes with finite spaces. Such
algorithms were recently proposed by Sutton, Mahmood, and White (2015) as an
improved solution to the problem of divergence of off-policy
temporal-difference learning with linear function approximation. We present in
this paper the first convergence proofs for two emphatic algorithms,
ETD($\lambda$) and ELSTD($\lambda$). We prove, under general off-policy
conditions, the convergence in $L^1$ for ELSTD($\lambda$) iterates, and the
almost sure convergence of the approximate value functions calculated by both
algorithms using a single infinitely long trajectory. Our analysis involves new
techniques with applications beyond emphatic algorithms leading, for example,
to the first proof that standard TD($\lambda$) also converges under off-policy
training for $\lambda$ sufficiently large.; Comment: 45 pages; an oversight in a proof in Appendix C of the first version
has been corrected. A shorter article based on the first version appeared at
the 28th Annual Conference on Learning Theory (COLT), 2015

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## Supernova Remnants as a Probe of Dust Grains in the Interstellar Medium

Fonte: Universidade Cornell
Publicador: Universidade Cornell

Tipo: Artigo de Revista Científica

Publicado em 07/05/2010
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Interstellar dust grains play a crucial role in the evolution of the galactic
interstellar medium (ISM). Despite its importance, however, dust remains poorly
understood in terms of its origin, composition, and abundance throughout the
universe. Supernova remnants (SNRs) provide a laboratory for studying the
evolution of dust grains, as they are one of the only environments in the
universe where it is possible to observe grains being both created and
destroyed. SNRs exhibit collisionally heated dust, allowing dust to serve as a
diagnostic both for grain physics and for the plasma conditions in the SNR. I
present theoretical models of collisionally heated dust which calculate grain
emission as well as destruction rates. In these models, I incorporate physics
such as nonthermal sputtering caused by grain motions through the gas, a more
realistic approach to sputtering for small grains, and arbitrary grain
compositions porous and composite grains. I apply these models to infrared and
X-ray observations of Kepler's supernova and the Cygnus Loop in the galaxy, and
SNRs 0509-67.5, 0519-69.0, and 0540-69.3 in the LMC. X-ray observations
characterize the hot plasma while IR observations constrain grain properties
and destruction rates. Such a multi-wavelength approach is crucial for a
complete understanding of gas and dust interaction and evolution. Modeling of
both X-ray and IR spectra allows disentangling of parameters such as pre and
postshock gas density...

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## Planetary transit observations at the University Observatory Jena: XO-1b and TrES-1

Fonte: Universidade Cornell
Publicador: Universidade Cornell

Tipo: Artigo de Revista Científica

Publicado em 12/05/2009
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We report on observations of transit events of the transiting planets XO-1b
and TrES-1 with a 25 cm telescope of the University Observatory Jena. With the
transit timings for XO-1b from all 50 available XO, SuperWASP, Transit Light
Curve (TLC)-Project- and Exoplanet Transit Database (ETD)-data, including our
own I-band photometry obtained in March 2007, we find that the orbital period
is P= (3.941501 +/- 0.000001) d, a slight change by ~3 s compared to the
previously published period. We present new ephemeris for this transiting
planet. Furthermore, we present new R-band photometry of two transits of
TrES-1. With the help of all available transit times from literature this
allows us to refine the estimate of the orbital period: P=(3.0300722 +/-
0.0000002) d. Our observations will be useful for future investigations of
timing variations caused by additional perturbing planets and/or stellar spots
and/or moons.; Comment: 7 pages, 7 figures, 5 tables, accepted for publication in AN

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## Combinatorial Techniques in the Galois Theory of $p$-Extensions

Fonte: Universidade Cornell
Publicador: Universidade Cornell

Tipo: Artigo de Revista Científica

Publicado em 10/08/2015
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A major open problem in current Galois theory is to characterize those
profinite groups which appear as absolute Galois groups of various fields.
Obtaining detailed knowledge of the structure of quotients and subgroup
filtrations of Galois groups of $p$-extensions is an important step toward a
solution. We illustrate several techniques for counting Galois $p$-extensions
of various fields, including pythagorean fields and local fields. An expression
for the number of extensions of a formally real pythagorean field having Galois
group the dihedral group of order 8 is developed. We derive a formula for
computing the $\mathbb{F}_p$-dimension of an $n$-th graded piece of the
Zassenhaus filtration for various finitely generated pro-$p$ groups, including
free pro-$p$ groups, Demushkin groups and their free pro-$p$ products. Several
examples are provided to illustrate the importance of these dimensions in
characterizing pro-$p$ Galois groups. We also show that knowledge of small
quotients of pro-$p$ Galois groups can provide information regarding the form
of relations among the group generators.; Comment: PhD thesis, The University of Western Ontario (see
http://ir.lib.uwo.ca/etd/2905), 127 pages

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## NRF2011-EDU001-EL001 EduLab Project Scaling-up Reflections on Using Open Source Physics

Fonte: Universidade Cornell
Publicador: Universidade Cornell

Tipo: Artigo de Revista Científica

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eduLab (MOE, 2012b) is a key programme under the third MasterPlan for ICT in
Education (mp3) where teachers with good ideas for an ICT-enhanced lesson or
curriculum (learning with computer models through inquiry, example PhET (PhET,
2011) can come together to collaborate. eduLab aims to support teachers to
develop, prototype and test-bed their lesson ideas (journey in 2012-2014) while
ensuring that the results, in the form of complete lesson packages (see
http://edulab.moe.edu.sg/edulab-programmes/existing-projects third project),
are scalable across schools to benefit the wider teaching community. Our models
and lessons are downloadable here
http://weelookang.blogspot.sg/2013/03/moe-excel-fest-2013-scaling.html We have
collaborated with namely Professor Francisco Esquembre, Professor Fu-Kwun Hwang
and Wolfgang Christian and created Open Source Computer Models on the topic of
1 Dimensional Collision (Loo Kang Wee, 2012b), Falling Magnet in Coil, Ripple
Tank (Duffy, 2010; G. H. Goh et al., 2012; Ong, Ng, Goh, & Wee, 2012; Ong, Ng,
Teo, et al., 2012; Loo Kang Wee, Duffy, Aguirregabiria, & Hwang, 2012),
Superposition Waves, 2 Mass Gravity, Earth-Moon Gravity, Kepler's Solar System
and Geostationary Orbit (J. Goh & Wee, 2011; Loo Kang Wee...

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