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Variation of Total Ozone during 24 August 2005 Magnetic Storm: A Case Study  [PDF]
Gustavo A. Mansilla
Atmospheric and Climate Sciences (ACS) , 2013, DOI: 10.4236/acs.2013.34049
Abstract:

This paper presents the longitudinal distribution of total ozone along several latitudinal circles from both hemispheres during a strong geomagnetic storm that occurred on 24 August 2005 after a solar proton event (the maximum flux of protons with energy > 10 MeV was 1.70 × 107 protons cm-2.day-1.sr-1 on 23 August). For that, we use average daily values of total ozone observations (=column ozone amount) in Dobson units for the period 18-25 August 2005 (obtained from the Total Ozone Mapping Spectrometer, TOMS). The considered storm occurred after a relatively quiet geomagnetic period and it is not superposed by another perturbation, which permit us to identify clearly the effects of the geomagnetic storm on total ozone. The results show statistically significant decreases in ozone along the latitudinal circles 70°N and 70°S (summer and winter), no statistically significant effects at middle latitudes (40°S) and sparse statistically significant increases at low latitudes (20°S). The role of some mechanisms to explain the features observed is considered.

“ PALABRAS QUE VAN A DAR AL RíO DE UNA POESíA INúTIL”: UNA APROXIMACIóN A LA POéTICA DE JAIME HUENúN A PARTIR DE PUERTO TRAKL
Mansilla,Sergio;
Alpha (Osorno) , 2011, DOI: 10.4067/S0718-22012011000100002
Abstract: beginning with a reading of the collection puerto trakl, we discuss some key aspects of jaime huenún’s poetics, related to the cultural translations of his mestizo writing. huenún’s literary proposal advances in the direction of constructing a modern mapuche-huilliche poetics, which makes modes of textualization that originate from indigenous and non-indigenous discursivities merge, descentralizing them in the process. in puerto trakl, what descenters are precisely the discursivities of the most canonic of modern international poetry.
LA FORMA NORMAL DE LIE EN UN CASO CRíITICO DE UN SISTEMA HAMILTONIANO CON TRES GRADOS DE LIBERTAD Y TRES FRECUENCIAS IGUALES
MANSILLA,JOSé;
Proyecciones (Antofagasta) , 2004, DOI: 10.4067/S0716-09172004000100001
Abstract: in this work, we consider a hamiltonian system with three degrees of freedom, whose linear part has all its roots pure imaginary and its three frequencies equal. we determine the kernel of the lie operator and the normal form, according to meyer, of hamiltonian in the diagonalizable case and in one of the nondiagonalizable cases, obtaining a normal form of the type obtained by sokol?s kii and mansilla in previous works
El Síndrome de Fatiga Crónica: del modelo de susceptibilidad a la hipótesis de la cadena de estrés en el área laboral
Mansilla,Fernando;
Revista de la Asociación Espa?ola de Neuropsiquiatría , 2003, DOI: 10.4321/S0211-57352003000200003
Abstract: the susceptibility model has to be with the mixture of different elements: the biological susceptibility, the susceptibility to mobbing, the susceptibility to burn-out, the susceptibility to job stress and the protection factors such as: the social support, the positive self-concept, the internal locus of control, the high level of self-esteem and the self-efficacy feeling. the hypothesis of stress chain in the job area afirms that the persistance of job stress is acumulative. the mobbing, the burn-out syndrome, the job stress provoke different kinds of fatigue. if the stress factors, which lead to these problems, waist too much time, the fatigue may come to be what is called chronic fatigue syndrome.
LA FORMA NORMAL DE LIE EN UN CASO CRíITICO DE UN SISTEMA HAMILTONIANO CON TRES GRADOS DE LIBERTAD Y TRES FRECUENCIAS IGUALES
JOSé MANSILLA
Proyecciones (Antofagasta) , 2004,
Abstract: In this work, we consider a Hamiltonian system with three degrees of freedom, whose linear part has all its roots pure imaginary and its three frequencies equal. We determine the Kernel of the Lie operator and the normal form, according to Meyer, of Hamiltonian in the diagonalizable case and in one of the nondiagonalizable cases, obtaining a normal form of the type obtained by Sokol’s kii and Mansilla in previous works
“ PALABRAS QUE VAN A DAR AL RíO DE UNA POESíA INúTIL”: UNA APROXIMACIóN A LA POéTICA DE JAIME HUENúN A PARTIR DE PUERTO TRAKL “Words that end up in a river of useless poetry”: An approach to the poetics of Jaime Huenún, as seen through Puerto Trakl
Sergio Mansilla
Alpha (Osorno) , 2011,
Abstract: A partir de la lectura del poemario Puerto Trakl se discuten algunos aspectos claves de la poética de Jaime Huenún en lo relativo a las traducciones culturales de su escritura mestiza. La propuesta literaria de Huenún avanza en la dirección de construir una moderna poética mapuche huilliche que hace confluir modos de textualización que provienen tanto de discursividades indígenas como no indígenas, descentrándolas. En Puerto Trakl lo que se descentra son precisamente las discursividades de lo más canónico de la poesía moderna internacional. Beginning with a reading of the collection Puerto Trakl, we discuss some key aspects of Jaime Huenún’s poetics, related to the cultural translations of his mestizo writing. Huenún’s literary proposal advances in the direction of constructing a modern mapuche-huilliche poetics, which makes modes of textualization that originate from indigenous and non-indigenous discursivities merge, descentralizing them in the process. In Puerto Trakl, what descenters are precisely the discursivities of the most canonic of modern international poetry.
From naive to sophisticated behavior in multiagents based financial market models
Ricardo Mansilla
Physics , 2000, DOI: 10.1016/S0378-4371(00)00227-2
Abstract: We discuss the behavior of two magnitudes, physical complexity and mutual information function of the outcome of a model of heterogeneous, inductive rational agents inspired in the El Farol Bar problem and the Minority Game. The first is a measure rooted in Kolmogorov-Chaitin theory and the second one a measure related with information entropy of Shannon. We make extensive computer simulations, as result of which, we propose an ansatz for physical complexity and establish the dependence of exponent of that ansatz from the parameters of the model. We discuss the accuracy of our results and the relationship with the behavior of mutual information function as a measure of time correlations of agents choice.
Algorithmic Complexity of Real Financial Markets
Ricardo Mansilla
Physics , 2000, DOI: 10.1016/S0378-4371(01)00434-4
Abstract: A new approach to the understanding of the complex behavior of financial markets index using tools from thermodynamics and statistical physics is developed. Physical complexity, a magnitude rooted in the Kolmogorov-Chaitin theory is applied to binary sequences built up from real time series of financial markets indices. The study is based on NASDAQ and Mexican IPC data. Different behaviors of this magnitude are shown when applied to the intervals of series placed before crashes and in intervals when no financial turbulence is observed. The connection between our results and The Efficient Market Hypothesis is discussed.
Stroboscopic observation of a random walker
R. Mansilla
Physics , 2010,
Abstract: The patterns of motion of mobile agents has received recently wide attention in the literature. There is a number of recent studies centered around the motion behavior of many agents ranging from albatrosses to human beings. Special attention has been given to the covered distances statistical distributions. In some cases, due to the lack of accurate data about the motion of the agents it has been necessary to plan very clever experiments to obtain them. These experiments try to infer the statistical properties of the agents' real motion from the observed positions in consecutive time intervals. The length of the time intervals is a random variable taking values from a previously known statistical distribution or from a distribution deduced from empirical data. The aim of this work is to demonstrate that for a Gaussian Random Walker it is, in general, impossible to recover the real motion patterns distribution from the stroboscopic observation of the agents. Moreover, it is also shown that the distances distribution strongly depends on the agents' observation time intervals. These claims are sustained by numerical experiments.
Algorithmic Complexity in Real Financial Markets
R. Mansilla
Quantitative Finance , 2001,
Abstract: A new approach to the understanding of complex behavior of financial markets index using tools from thermodynamics and statistical physics is developed. Physical complexity, a magnitude rooted in Kolmogorov-Chaitin theory is applied to binary sequences built up from real time series of financial markets indexes. The study is based on NASDAQ and Mexican IPC data. Different behaviors of this magnitude are shown when applied to the intervals of series placed before crashes and to intervals when no financial turbulence is observed. The connection between our results and The Efficient Market Hypothesis is discussed.
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