1,163 research outputs found
Gluon Vortices and Induced Magnetic Field in Compact Stars
The natural candidates for the realization of color superconductivity are the
extremely dense cores of compact stars, many of which have very large magnetic
fields, especially the so-called magnetars. In this paper we discuss how a
color superconducting core can serve to generate and enhance the stellar
magnetic field without appealing to a magnetohydrodynamic dynamo mechanism.Comment: To appear in the Proceedings of the VII Latin American Symposium on
Nuclear Physics and Applications. Cusco (Peru) June 200
Measuring Neutrino Oscillations with Nuclear Reactors
Since the first direct observations of antineutrino events by Reines and Cowan in the 1950's [1], nuclear reactors have been an important tool in the study of neutrino properties. More recently, the study of neutrino oscillations has been a very active area of research. The pioneering observation of oscillations by the KamLAND experiment has provided crucial information on the neutrino mixing matrix. New experiments to study the remaining unknown mixing angle are currently under development. These recent studies and potential future developments will be discussed
Ubiquitous Filtering for Nonlinear Problems
This chapter develops and extends the general theoretical results, previously published in the chapter “Nonlinear filtering of weak chaotic signals”, and presents detailed implementations of a computationally simple, robust (filtering fidelity almost insensitive to changes of the desired input signal properties) and rather precise approach for the filtering of weak signals of different physical nature (biological, seismic, voice, etc.) in presence of white Gaussian noise. The implementations rely on non-linear filtering techniques that in general can be considered as either one-moment or multi-moment, in the sense that they operate with a single sample (instantaneous fashion) or with various adjacent samples (non-instantaneous fashion). Chaotic modeling of the real input signals allows achieving an almost ubiquitous filtering approach with a computationally simple implementation. Application of the linearization strategies (for both one and two-moment filtering) provide, additionally, “invariance” of the processing algorithms to variations on the nature and statistics of the input signals
Magnetic Phases in Dense Quark Matter
In this paper I discuss the magnetic phases of the three-flavor color
superconductor. These phases can take place at different field strengths in a
highly dense quark system. Given that the best natural candidates for the
realization of color superconductivity are the extremely dense cores of neutron
stars, which typically have very large magnetic fields, the magnetic phases
here discussed could have implications for the physics of these compact
objects.Comment: Presented at VII Latin American Symposium on Nuclear Physics and
Applications, El Cusco, Peru, June 200
Nonlinear Filtering of Weak Chaotic Signals
In recent years, the application of nonlinear filtering for processing chaotic signals has become relevant. A common factor in all nonlinear filtering algorithms is that they operate in an instantaneous fashion, that is, at each cycle, a one moment of time magnitude of the signal of interest is processed. This operation regime yields good performance metrics, in terms of mean squared error (MSE) when the signal-to-noise ratio (SNR) is greater than one and shows moderate degradation for SNR values no smaller than −3 dB. Many practical applications require detection for smaller SNR values (weak signals). This chapter presents the theoretical tools and developments that allow nonlinear filtering of weak chaotic signals, avoiding the degradation of the MSE when the SNR is rather small. The innovation introduced through this approach is that the nonlinear filtering becomes multimoment, that is, the influence of more than one moment of time magnitudes is involved in the processing. Some other approaches are also presented
25 Years After Prop 187 Brochure
About this Research
This report provides a comparative look at the demographics of California and Los Angeles County electorate, voters, and residents from 1994 ( Then ) to 2019 ( Now ) to understand the impact of Prop 187. Data from the U.S. Census Bureau and California Secretary of State are analyzed to study trends in the makeup of the two geographies. The proposition\u27s impact is captured through political representation, voter registration, and total population data examined as well as demographic shifts in the makeup of both the electorate and the voters by race and ethnicity and by political affiliation.https://digitalcommons.lmu.edu/studyla-reports/1001/thumbnail.jp
Legalidad del Proyecto Forestal e Industrial Itata.
66 p.La presente investigación trata el tema del Medio Ambiente, su Protección y Resguardo, y el caso concreto de una Empresa (CFI Itata), que no
toma en cuenta mayormente este tema, ya que la producción de celulosa provoca compuestos órgano clorados, los cuales son altamente tóxicos para
los ciudadanos, especialmente a las personas asentados en las proximidades de dicha construcción. Además el medio ambiente se ve claramente dañado y denigrado por la puesta en marcha de este proyecto, poniendo énfasis en la
tarea de las Autoridades y el Estado en el resguardo de una garantía Constitucionalmente protegida.
Además se realiza un estudio de la legislación aplicable al caso, tanto nacional como internacional, poniendo énfasis en los tratados que prohíben el vertimiento de dichas sustancias
Baryon masses and \sigma-terms in SU(3) BChPT x 1/Nc
Baryon masses and nucleon \sigma-terms are studied with the effective theory
that combines the chiral and 1/Nc expansions for three flavors. In particular
the connection between the deviation of the Gell-Mann-Okubo relation and the
\sigma-term corresponding to the scalar density associated with the hypercharge
is emphasized. The latter is at lowest order related to a mass combination
whose low value has given rise to a \sigma- term puzzle. It is shown that while
the nucleon \sigma-terms have a well behaved low energy expansion, that mass
combination is affected by large higher order corrections non-analytic in quark
masses. Adding to the analysis lattice QCD baryon masses, it is found that
{\sigma}{\pi}N=69(10) MeV and {\sigma}s has natural magnitude within its
relative large uncertainty.Comment: 8 pages, 1 table, 1 figur
Election Forecast: 2020 Presidential General Election
StudyLA conducted an inaugural survey of political thought leaders in Los Angeles asking their predictions for the 2020 general election
• purposive sample of political thought leaders in or representing Los Angeles with additional snowball sampling
• 174 respondents
• self-administered online survey
• administered October 5-23, 2020https://digitalcommons.lmu.edu/studyla-reports/1000/thumbnail.jp
Downtown LA Community Study - Full Report
About This Report
This report details the results of the 2019 intercept survey of 610 Downtown LA residents. These data are compared to results of the 2019 Los Angeles Public Opinion Survey of 2,008 Los Angeles County residents.
In early 2019, StudyLA field researchers conducted a study in Downtown LA to measure resident perception of various aspects that contribute to quality of life and outlook on the future of the region. To gather the data, trained researchers recruited individuals in Downtown LA to complete a 10 minute survey available in both English and Spanish. The questions assessed public opinion on a range of topics including the area’s characteristics, services, and amenities. The study concluded in 610 completed surveys from Downtown LA residents. The margin of error is ±4% for the entire sample.
For more information about these results, please contact Brianne Gilbert, Associate Director, at [email protected]://digitalcommons.lmu.edu/studyla-reports/1004/thumbnail.jp
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