Polarization-singular structure in laser images of phase-inhomogeneous layers to diagnose and classify their optical properties

Adduced in this work are the results of investigation aimed at analysis of coordinate distributions for azimuths and ellipticity of polarization (polarization maps) in laser images of three types of phase-inhomogeneous layers (PhIL), namely: rough, ground and bulk scattering layers. To characterize polarization maps for all the types of PhIL, the authors have offered to use three groups of parameters: statistical moments of the first to fourth orders, autocorrelation functions, logarithmic dependences for power spectra related to distributions of azimuths and ellipticity of polarization inherent to PhIL laser images. Ascertained are the criteria for diagnostics and classification of PhIL optical properties

Wavelet analysis for polarization maps of networks formed by liquid biological crystals in blood plasma: statistical and fractal approaches

Considered in this paper are the possibilities of local wavelet analysis for polarization-inhomogeneous images inherent to blood plasma of healthy and oncologically ill patients. Determined is the set of statistical, correlation and fractal parameters for distributions of wavelet coefficients that characterize different scales of polarization maps inherent to polycrystalline networks of amino-acids in blood plasma. Established are criteria for differentiation of processes that provide transformation of birefringent optically-anisotropic structures in blood plasma for various scales of their geometrical dimensions

Polarization-singular structure in laser images of phase-inhomogeneous layers to diagnose and classify their optical properties

Adduced in this work are the results of investigation aimed at analysis of coordinate distributions for azimuths and ellipticity of polarization (polarization maps) in laser images of three types of phase-inhomogeneous layers (PhIL), namely: rough, ground and bulk scattering layers. To characterize polarization maps for all the types of PhIL, the authors have offered to use three groups of parameters: statistical moments of the first to fourth orders, autocorrelation functions, logarithmic dependences for power spectra related to distributions of azimuths and ellipticity of polarization inherent to PhIL laser images. Ascertained are the criteria for diagnostics and classification of PhIL optical properties

Micromagnetic distribution of film surface basing on the computer model

Запропоновано методику, та розроблено комп’ютерну модель, для дослідження поведінки магнітних наноматеріалів під впливом зовнішніх магнітних полів. Побудовано графіки розподілу вектора намагніченості. Проведено аналіз отриманих результатів згідно мікромагнетичної теорії. Отримано залежності основних магнітних характеристик феромагнетика. Отримано теоретичний розрахунок петлі магнітного гістерезису для ультратонких плівок, без врахування впливу струмів Фуко.Computer design of distributing the magnetized ferromagnetic gives the possibility to predict the behavior of material in variable magnetic fields. The software in the environment of MatLab was developed in this paper for the design of micromagnetic distribution on the surface of one layer film. The mathematical model was realized on the basis of discretely dipole approximation taking advantage of the Monte-Carlo method. The crystalline barn of F3+ atom was chosen as discretely environment. The total inside energy of dipole consists of exchangeable interrelation energy, dipole energy – dipole interrelation, energy of surface magnetical anisotropy and the external energy of magnetic field. In the realized model the surface of the film was distributed into n-identical parts, in which the modules of magnetical moments are considered to be similar, and the total film magnetization depends on mutual location of each of moments. Calculation was carried out in polar system of coordinate, as in one-layer films the magnetic moment and vector of magnetic anisotropy can be change a in one plane. According to the results of calculation vector fields of magnetization distribution were built for different values of tension and dependence of the sample magnetization on outside magnetic field. It was shown in the paper that sharp magnetization at small enough values of outside field takes place due to the reorientation of magnetical moments domens, the direction of which is close to the direction of the outside field. Further increase of magnetization takes place due to the increase of the domens area. Basing on the behavior of the sample the estimation of magnetization saturation value and the power of coercive force was carried out. To build the loops of magnetic hysteresis the model on the basis of arctangents that gives the results close to the experimental ones was used. The built loop does not represent the total expenditures while overmagnetizing, as the expenditures for vortex currents were not taken into account

Phase maps for networks of polycrystalline human biological liquids: Statistical and fractal analyses

Performed in this work are complex statistical and fractal analyses of phase properties inherent to birefringence networks of liquid crystals consisting of opticallythin layers prepared from synovial fluid taken from human joints. Within the framework of a statistical approach, the authors have investigated values and ranges for changes of statistical moments of the 1-st to 4-th orders that characterize coordinate distributions for phase shifts between orthogonal components of amplitudes inherent to laser radiation transformed by synovial fluid layers for human joints with various pathologies. Using the Gramm-Charlie method, ascertained are correlation criteria for differentiation of phase maps describing pathologically changed liquid-crystal networks. In the framework of the fractal approach, determined are dimensionalities of self-similar coordinate phase distributions as well as features of transformation of logarithmic dependences for power spectra of these distributions for various types of human joint pathologies

Probing Noncommutativity with Inflationary Gravitational Waves

In this paper we study the behaviour of gravitational wave background (GWB) generated during inflation in the environment of the noncommutative field approach. From this approach we derive out one additive term, and then we find that the dispersion relation of the gravitational wave would be modified and the primordial gravitational wave would obtain an effective mass. Therefore it breaks lorentz symmetry in local. Moreover, this additive term would a little raise up the energy spectrum of GWB in low frequency and then greatly suppress the spectrum at even lower energy scale of which the wave length may be near the current horizon. Therefore, a sharp peak is formed on the energy spectrum in the range of low frequencies. This peak should be a key criterion to detect the possible existence of noncommutativity of space-time in the background of our universe and a critical test for breaking lorentz symmetry in local field theory. Adding all possible effects on the evolution of GWB, we give some new information of the tensor power spectrum and its energy spectrum which may be probed in the future cosmological observations.Comment: 10 pages, 4 figures, improved versio

Impact Assessment of the Response Measures to Local Epidemics Induced by the Agents of Particularly Dangerous Infections: Isolation

The paper discusses the opportunities of using universal model of local, evolving within a closed population, epidemics/outbreaks, developed at the premises of SRC VB “Vector”, for investigations and assessment of the impact of various resource limitations on the countermeasure effectiveness, and in particular isolation of a patient and contact tracing and isolation. Based on the epidemic dynamics analysis for a number of infections such as smallpox, anthrax, pneumonic and bubonic plague, hemorrhagic Ebola, Marburg, Lassa, Crimean-Congo fevers, it is demonstrated that occurrence of resource limitations of isolation can have a significant impact on the scale of epidemic aftermaths. Moreover, the outset of response measures takes a severe effect, as one of the important for localization of arthropod-borne infection factors is quarantine, alongside with isolation. The computer based software model is available at http://vector-epimod.r

Universal Local Epidemic Model and Its Usage in the Assessment of Novosibirsk Region Resource Preparedness to a Bioterrorist Attack

Objective of the study is to substantiate the possibility to assess local/regional resource capacity needed for a large-scale epidemic response as concerns emerging infectious diseases caused by pathogenic agents of particularly dangerous infections, such as smallpox, anthrax, plague, and Ebola, Marburg, Lassa, Crimean-Congo fevers. Investigations are conducted using a designed at the SRC VB “Vector” universal local epidemic/outbreak (developing within a closed population) model. The results of epidemic dynamics modeling suggest that in case of mass infection of the population in the Novosibirsk Region its resources are well sufficient for tularemia, anthrax, and Marburg and Crimean-Congo fever outbreak control. Response measures for smallpox, plague, Ebola and Lassa fever epidemic control will require additional large-scale federal support

Assessment of the Impact of Response Activities to the Aftermaths of Local Epidemics, Caused by the Agents of Particularly Dangerous Infections: Community Immunity

Objective is to demonstrate the advantages of assessment of the community immunity impact on the epidemics aftermaths using universal computerized model of local, developing within the closed population, epidemics/outbreaks of particularly dangerous and socially-significant infections, designed at the premises of SSC VB “Vector”. Modeling outcomes allow for evaluation of the efficacy of preliminary and emergency immunization for epidemic control. It is shown that for the modeled infections the level of community immunity, developed before the start of the outbreak, can play a significant role in minimization of implications. Effect of the mass vaccination, performed concurrently with the other response measures, is far less tangible. The model is available at http://vector-epimod.ru