Zobrazeno 1 - 10
of 17
pro vyhledávání: '"Margareta Ignat"'
Autor:
Mircea Gligor, Margareta Ignat
Publikováno v:
Fractals. 11:363-368
An empirical study accomplished on various samples of marks shows that their distribution on mark levels has some universal features. Using (classical) examination items based on commentaries and debate, the distribution displays a Gaussian form with
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9eabc843c196341fcab0d72c1015fc4a
https://doi.org/10.1142/s0218348x03002257
https://doi.org/10.1142/s0218348x03002257
Autor:
Mircea Gligor, Margareta Ignat
Publikováno v:
Physica A: Statistical Mechanics and its Applications. 301:535-544
The purpose of this paper is the application of a usual method of statistical mechanics—the renormalization based on Wilson's recursive relations—in order to study the critical behavior of a social index, namely the live births per 1000 populatio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3cfd222a7889dc5bac8c22e201ed1bff
https://doi.org/10.1016/s0378-4371(01)00423-x
https://doi.org/10.1016/s0378-4371(01)00423-x
Autor:
Margareta Ignat, Mircea Gligor
Publikováno v:
Interdisciplinary Science Reviews. 26:183-190
This paper presents an overview of some recent applications of methods of statistical physics to financial problems such as stock market behaviour and crashes. This field of research has seen intensive developments over the last ten years and is toda
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::45ec1b0833b2e0c89b5a4237b01dc954
https://doi.org/10.1179/030801801679449
https://doi.org/10.1179/030801801679449
Publikováno v:
Physics of Plasmas. 8:266-271
Pitch-angle scattering phenomenon caused by resonant interactions between relativistic electrons, 5 MeV
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::571712f0b976d90965c1f60019182530
https://doi.org/10.1063/1.1324990
https://doi.org/10.1063/1.1324990
Publikováno v:
Physics Letters A. 271:65-73
In previous papers by Oprisan et al. the evolution of stochastic systems based on the record function was studied. The present study concerning this problem shows that the boundary conditions which appear in the system have an influence on the aggreg
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4e54a32f50f17a7f7ca06c5e1cca5523
https://doi.org/10.1016/s0375-9601(00)00332-7
https://doi.org/10.1016/s0375-9601(00)00332-7
Publikováno v:
Physics Letters A. 254:112-118
Following some biological aspects we build a new stochastic model to solve self-organization problems. Based on the idea that the future is influenced by history, we endow our random walk robots with a new type of record function. We also investigate
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::50901ed78799e7fe5a6ca5e85c883839
https://doi.org/10.1016/s0375-9601(99)00053-5
https://doi.org/10.1016/s0375-9601(99)00053-5
Autor:
Margareta Ignat, Rodica Ciurea-Borcia
Publikováno v:
Physica Scripta. 58:262-265
This paper deals with resonant interactions betwen Alfven and acoustic waves, propagating through an ideal magnetohydrodynamic (MHD) plasma, with the same phase velocity. The nonlinear coupling equations for the case under consideration are derived.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::883d107a24956ffc8478b48b82b48226
https://doi.org/10.1088/0031-8949/58/3/011
https://doi.org/10.1088/0031-8949/58/3/011
Publikováno v:
Journal of Nuclear Materials. 255:1-13
We have chosen from the literature a model which describes the SCC evolution considering three stages of the crack propagation: intergranular, transgranular and ductile rupture. We have verified the applicability of this model to describe the SCC fai
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9cbdb39286d422b6d8f9cf4825f08641
https://doi.org/10.1016/s0022-3115(98)00023-3
https://doi.org/10.1016/s0022-3115(98)00023-3
Autor:
Rodica Ciurea-Borcia, Margareta Ignat
Publikováno v:
Geophysical & Astrophysical Fluid Dynamics. 87:147-157
The propagation of nonlinear quasimonocromatic Alfven waves with small but finite amplitude into an ideal astrophysical plasma is studied. Using the derivative expansion method in the third order MHD approximation, the perturbation components for the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8418f4868102a19fcee922b76f731239
https://doi.org/10.1080/03091929808221144
https://doi.org/10.1080/03091929808221144
Autor:
Rodica Ciurea, Margareta Ignat
Publikováno v:
Physics of Plasmas. 4:2681-2686
In this paper we examine the nonlinear propagation of Alfven waves in astrophysical plasma, taking into account the viscosity and Joule effect. Working in the second order magnetohydrodynamic (MHD) approximation, using the multiple scales method, the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::56177e97f4696a2504002760f367ba97
https://doi.org/10.1063/1.872353
https://doi.org/10.1063/1.872353