397 research outputs found
La práctica de hábitos de salud e higiene mental en la formación del futuro docente de primaria en la Facultad de Ciencias de la Educación
OBJETIVO GENERAL
< Reconocer la importancia de la práctica de hábitos de salud e higiene mental en la formación del futuro docente de primaria.
OBJETIVOS ESPECÍFICOS
< Interpretar y diferenciar los términos de higiene mental, salud mental, estrés e inteligencia emocional, además de su incidencia en la formación del docente.
< Valorar la práctica de los hábitos de salud e higiene mental y su incidencia en la disminución de los niveles de estrés.
> Promover la adquisición de hábitos que fortalezcan la salud e higiene mental
Prenatal factors contribute to the emergence of kwoshiorkor or marasmus in severe undernutrition: evidence for the predictive adaptation model
Severe acute malnutrition in childhood manifests as oedematous (kwashiorkor, marasmic kwashiorkor) and non-oedematous (marasmus) syndromes with very different prognoses. Kwashiorkor differs from marasmus in the patterns of protein, amino acid and lipid metabolism when patients are acutely ill as well as after rehabilitation to ideal weight for height. Metabolic patterns among marasmic patients define them as metabolically thrifty, while kwashiorkor patients function as metabolically profligate. Such differences might underlie syndromic presentation and prognosis. However, no fundamental explanation exists for these differences in metabolism, nor clinical pictures, given similar exposures to undernutrition. We hypothesized that different developmental trajectories underlie these clinical-metabolic phenotypes: if so this would be strong evidence in support of predictive adaptation model of developmental plasticity
Matrix Theory Interpretation of DLCQ String Worldsheets
We study the null compactification of type-IIA-string perturbation theory at
finite temperature. We prove a theorem about Riemann surfaces establishing that
the moduli spaces of infinite-momentum-frame superstring worldsheets are
identical to those of branched-cover instantons in the matrix-string model
conjectured to describe M-theory. This means that the identification of string
degrees of freedom in the matrix model proposed by Dijkgraaf, Verlinde and
Verlinde is correct and that its natural generalization produces the moduli
space of Riemann surfaces at all orders in the genus expansion.Comment: 9 pages LaTeX. Changes in style, typos correcte
Fuzzy Spheres in pp Wave Matrix String Theory
The behaviour of matrix string theory in the background of a type IIA pp wave
at small string coupling, g_s << 1, is determined by the combination M g_s
where M is a dimensionless parameter proportional to the strength of the
Ramond-Ramond background. For M g_s << 1, the matrix string theory is
conventional; only the degrees of freedom in the Cartan subalgebra contribute,
and the theory reduces to copies of the perturbative string. For M g_s >> 1,
the theory admits degenerate vacua representing fundamental strings blown up
into fuzzy spheres with nonzero lightcone momenta. We determine the spectrum of
small fluctuations around these vacua. Around such a vacuum all N-squared
degrees of freedom are excited with comparable energies. The spectrum of masses
has a spacing which is independent of the radius of the fuzzy sphere, in
agreement with expected behaviour of continuum giant gravitons. Furthermore,
for fuzzy spheres characterized by reducible representations of SU(2) and
vanishing Wilson lines, the boundary conditions on the field are characterized
by a set of continuous angles which shows that generically the blown up strings
do not ``close''.Comment: 45 pages REVTeX 4 and AMSLaTeX. 1 figure. v2: references added.
Figure redrawn using LaTe
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Computer Experiments for Function Approximations
This research project falls in the domain of response surface methodology, which seeks cost-effective ways to accurately fit an approximate function to experimental data. Modeling and computer simulation are essential tools in modern science and engineering. A computer simulation can be viewed as a function that receives input from a given parameter space and produces an output. Running the simulation repeatedly amounts to an equivalent number of function evaluations, and for complex models, such function evaluations can be very time-consuming. It is then of paramount importance to intelligently choose a relatively small set of sample points in the parameter space at which to evaluate the given function, and then use this information to construct a surrogate function that is close to the original function and takes little time to evaluate. This study was divided into two parts. The first part consisted of comparing four sampling methods and two function approximation methods in terms of efficiency and accuracy for simple test functions. The sampling methods used were Monte Carlo, Quasi-Random LP{sub {tau}}, Maximin Latin Hypercubes, and Orthogonal-Array-Based Latin Hypercubes. The function approximation methods utilized were Multivariate Adaptive Regression Splines (MARS) and Support Vector Machines (SVM). The second part of the study concerned adaptive sampling methods with a focus on creating useful sets of sample points specifically for monotonic functions, functions with a single minimum and functions with a bounded first derivative
The Color of Childhood: The Role of the Child/Human Binary in the Production of Anti-Black Racism
The binary between the figure of the child and the fully human being is invoked with regularity in analyses of race, yet its centrality to the conception of race has never been fully explored. For most commentators, the figure of the child operates as a metaphoric or rhetorical trope, a non-essential strategic tool in the perpetuation of White supremacy. As I show in the following, the child/human binary does not present a contingent or merely rhetorical construction but, rather, a central feature of racialization. Where Black peoples are situated as objects of violence it is often precisely because Blackness has been identified with childhood and childhood is historically identified as the archetypal site of naturalized violence and servitude. I proceed by offering a historical account of how Black peoples came to inherit the subordination and dehumanization of European childhood and how White youth were subsequently spared through their partial categorization as adults
Constraints on a Massive Dirac Neutrino Model
We examine constraints on a simple neutrino model in which there are three
massless and three massive Dirac neutrinos and in which the left handed
neutrinos are linear combinations of doublet and singlet neutrinos. We examine
constraints from direct decays into heavy neutrinos, indirect effects on
electroweak parameters, and flavor changing processes. We combine these
constraints to examine the allowed mass range for the heavy neutrinos of each
of the three generations.Comment: latex, 29 pages, 7 figures (not included), MIT-CTP-221
D-instantons and Matrix Models
We discuss the Matrix Model aspect of configurations saturating a fixed
number of fermionic zero modes. This number is independent of the rank of the
gauge group and the instanton number. This will allow us to define a
large- limit of the embeddeding of D-instantons in the Matrix Model
and make contact with the leading term (the measure factor) of the supergravity
computations of D-instanton effects. We show that the connection between these
two approaches is done through the Abelian modes of the Matrix variables.Comment: harvmac (b), 26 pages. v5 : polished final version for publication.
Cosmetic changes onl
Black Holes and the SYM Phase Diagram
Making combined use of the Matrix and Maldacena conjectures, the relation
between various thermodynamic transitions in super Yang-Mills (SYM) and
supergravity is clarified. The thermodynamic phase diagram of an object in DLCQ
M-theory in four and five non-compact space dimensions is constructed; matrix
strings, matrix black holes, and black -branes are among the various phases.
Critical manifolds are characterized by the principles of correspondence and
longitudinal localization, and a triple point is identified. The microscopic
dynamics of the Matrix string near two of the transitions is studied; we
identify a signature of black hole formation from SYM physics.Comment: 36 pages, latex; 6 eps figure
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