1,487 research outputs found
Singular random matrix decompositions: distributions.
Assuming that Y has a singular matrix variate elliptically contoured distribution with respect to the Hausdorff measure, the distributions of several matrices associated to QR, modified QR, SV and Polar decompositions of matrix Y are determined, for central and non-central, non-singular and singular cases, as well as their relationship to the Wishart and Pseudo-Wishart generalized singular and non-singular distributions. We present a particular example for the Karhunen-Lòeve decomposition. Some of these results are also applied to two particular subfamilies of elliptical distributions, the singular matrix variate normal distribution and the singular matrix variate symmetric Pearson type VII distribution
Singular random matrix decompositions: Jacobians.
For a singular random matrix Y, we find the Jacobians associated with the following decompositions; QR, Polar, Singular Value (SVD), L'U, L'DM and modified QR (QDR). Similarly, we find the Jacobinas of the following decompositions: Spectral, Cholesky's, L'DL and symmetric non-negative definite square root, of the cross-product matrix S = Y'Y
SINGULAR RANDOM MATRIX DECOMPOSITIONS: DISTRIBUTIONS.
Assuming that Y has a singular matrix variate elliptically contoured distribution with respect to the Hausdorff measure, the distributions of several matrices associated to QR, modified QR, SV and Polar decompositions of matrix Y are determined, for central and non-central, non-singular and singular cases, as well as their relationship to the Wishart and Pseudo-Wishart generalized singular and non-singular distributions. We present a particular example for the Karhunen-Lòeve decomposition. Some of these results are also applied to two particular subfamilies of elliptical distributions, the singular matrix variate normal distribution and the singular matrix variate symmetric Pearson type VII distribution.
SINGULAR RANDOM MATRIX DECOMPOSITIONS: JACOBIANS.
For a singular random matrix Y, we find the Jacobians associated with the following decompositions; QR, Polar, Singular Value (SVD), L´U, L´DM and modified QR (QDR). Similarly, we find the Jacobinas of the following decompositions: Spectral, Cholesky´s, L´DL and symmetric non-negative definite square root, of the cross-product matrix S = Y´Y.
Estancia acadĂŠmica en Lyon, Francia
Fil: GarcĂa Crimi, Graciela Edith.
Universidad Nacional de Cuyo. Facultad de OdontologĂ
Dental fluorosis : conservative alternative for its treatment : clinical case
La fluorosis dental es una alteraciĂłn irreversible de
la estructura dentaria caracterizada por zonas de hipomineralizaciĂłn,
resultado de la ingesta excesiva de
flĂşor durante la odontogĂŠnesis. En el Departamento
de Lavalle, Provincia de Mendoza (Argentina) la concentraciĂłn
de flĂşor es superior a la que deberĂa tener
el agua potable de uso domiciliario. Existen diversos
mĂŠtodos para clasificar la severidad de la fluorosis
dental. Actualmente se puede elegir entre diversas
tĂŠcnicas clĂnicas, sin embargo, la correcta selecciĂłn
del tratamiento depende principalmente de una adecuada
valoraciĂłn de la severidad de la patologĂa. Se
describe un caso clĂnico de un paciente con antecedentes
de fluorosis severa y como alternativa de tratamiento
se optĂł por una tĂŠcnica de restauraciĂłn
directa con resinas compuestas.Dental fluorosis is an irreversible alternation of the
tooth structure, characterized by areas with hypomineralization,
as a result of the excessive intake of
fluoride during the odontogeny. In the department of
Lavalle, Mendoza (Argentina), fluoride concentration
in domestic water is higher than it should. There are
several methods for classifying the severity of dental
fluorosis. Actually, different clinical techniques
can be chosen; however, the correct choice of the
treatment depends mainly on the suitable assessment
of the severity of the pathology. For a clinical case
about a patient with severe fluorosis background,
it was chosen, as an alternative of the treatment, a
technique of direct restauration with composite resinFil: GarcĂa Crimi, Graciela Edith.
Universidad Nacional de Cuyo. Facultad de OdontologĂ
Social commitment of the Faculty of Dentistry. Uncuyo. Mendoza. Argentina
Fil: GarcĂa Crimi, Graciela Edith.
Universidad Nacional de Cuyo. Facultad de OdontologĂ
Get beauty function in the back sector with composite resins : case report
La operatoria dental actual cuenta con un conocimiento mĂĄs profundo de las diferentes estructuras dentarias que sumado al gran adelanto tecnolĂłgico y cientĂfico en la ciencia de los biomateriales; fruto de innumerables investigaciones, nos permiten contar hoy, con una nueva generaciĂłn de materiales restauradores,
lo que hace mĂĄs crĂtico y exigente el conocimiento y anĂĄlisis por parte del profesional,
de las tĂŠcnicas a efectuar, la realizaciĂłn depurada de procedimientos y los
biomateriales a utilizar, con el fin de realizar tratamientos que sean biocompatibles,
eficientes y de importante longevidad.The operative dentistry current account with a more in-depth knowledge
of the different dental structures that joined the great technological advancement
and scientific in the science of the biomaterials; fruit of countless
research, provide us today with a new generation of restorative materials,
which makes it more critical and demanding knowledge and analysis on the
part of the professional and the techniques to carry out, the realization of
purified procedures and biomaterials to use, in order to perform treatments
that are biocompatible, efficient and important longevity.Fil: GarcĂa Crimi, Graciela Edith.
Universidad Nacional de Cuyo. Facultad de OdontologĂ
RelaciĂłn entre perĂmetro y ĂĄrea: el caso de Patricia y las interacciones
Presentamos un estudio de caso de una niĂąa de 5Âş de EducaciĂłn Primaria en el que se aborda la relaciĂłn entre ĂĄrea y perĂmetro partiendo de una unidad didĂĄctica basada en la resoluciĂłn de problemas, cuyo objetivo es construir el concepto de ĂĄrea. El anĂĄlisis de cuestionarios, observaciĂłn de aula, protocolos e interacciones nos permiten reflejar aspectos cognitivos y sociolĂłgicos inherentes al proceso de construcciĂłn mencionado
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