Computer simulation of field ion images of nanoporous structure in the irradiated materials

Computer simulation and interpretation of field ion microscopy images of ion irradiated platinum are discussed. Field ion microscopy technique provides direct precise atomic scale investigation of crystal lattice defects of atomically pure surface of material; at the same time it allows to analyze the structural defects in volume by controlled and sequential removal of surface atoms by electric field. Defects identification includes the following steps: at the first stage the type of crystalline structure and spatial orientation of crystallographic directions were determined. Thus, we obtain the data about exact position of all atoms of the given volume, i.e. the model image of an ideal crystal. At the second stage, the ion image was processed used the program to obtain the data about real arrangement of atoms of the investigated sample. At the third stage the program compares these two data sets, with a split-hair accuracy revealing a site of all defects in a material. Results of the quantitative analysis show that shape of nanopores are spherical or cylindrical, diameter on nanopores was varied from 1 to 5 run, their depth was fond to be from 1 to 9 nm. It was observed that nearly 40% of nanopores are concentrated in the subsurface layer 10 nm thick, the concentration of nanopores decreased linearly with the distance from the irradiated surface

Network synchronization landscape reveals compensatory structures, quantization, and the positive effect of negative interactions

Synchronization, in which individual dynamical units keep in pace with each other in a decentralized fashion, depends both on the dynamical units and on the properties of the interaction network. Yet, the role played by the network has resisted comprehensive characterization within the prevailing paradigm that interactions facilitating pair-wise synchronization also facilitate collective synchronization. Here we challenge this paradigm and show that networks with best complete synchronization, least coupling cost, and maximum dynamical robustness, have arbitrary complexity but quantized total interaction strength that constrains the allowed number of connections. It stems from this characterization that negative interactions as well as link removals can be used to systematically improve and optimize synchronization properties in both directed and undirected networks. These results extend the recently discovered compensatory perturbations in metabolic networks to the realm of oscillator networks and demonstrate why "less can be more" in network synchronization.Comment: 11 pages and 8 figures (including Supporting Information), Supporting video available at http://www.youtube.com/watch?v=3dMI1Yyxmb

DEVELOPMENT OF A PERSONNEL MOTIVATION SYSTEM FOR RATIONALIZATION ACTIVITIES AT AN INDUSTRIAL ENTERPRISE

The article presents a methodology for stimulating personnel to rationalization activities. The methodology is based on the Kanban lean manufacturing tool. This technique will moti-vate employees for rationalization work without spending a large amount of financial resources

RISK MANAGEMENT IN TEST AND CALIBRATION LABORATORIES

The article is devoted to a risk-based approach in management. As a result of studying regulatory documents, a risk assessment procedure was developed and described. Based on this document, some risks in the field of testing and calibration laboratories were identified

Innovative Approach to Company Management in the Part of Risk Management of a Calibration Laboratory

В статье описаны цели, задачи, определение и анализ типовых рисков как инновационный подход к управлению при поверке средств измерений в метрологической лаборатории.This article describes the goals, objectives, definition and analysis of typical risks as an innovative approach to management in the verification of measuring instruments in a metrological laboratory

CALIBRATION LABORATORY RISK MANAGEMENT AS AN INNOVATIVE APPROACH TO THE MANAGEMENT OF WEATHERFORD

This article describes the goals, objectives, definition and analysis of typical risks as an innovative approach to management in the verification of measuring instruments in a metrological laboratory

Polymorphism of SERF2, the gene encoding a heat-resistant obscure (Hero) protein with chaperone activity, is a novel link in ischemic stroke

Ischemic stroke (IS) is one of the most serious cardiovascular events associated with high risk of death or disability. The growing body of evidence highlights molecular chaperones as especially important players in the pathogenesis of the disease. Since six small proteins called “Hero” have been recently identified as a novel class of chaperones we aimed to evaluate whether SNP rs4644832 in SERF2 gene encoding the member of Hero-proteins, is associated with the risk of I

Modeling of Spiking-Bursting Neural Behavior Using Two-Dimensional Map

A simple model that replicates the dynamics of spiking and spiking-bursting activity of real biological neurons is proposed. The model is a two-dimensional map which contains one fast and one slow variable. The mechanisms behind generation of spikes, bursts of spikes, and restructuring of the map behavior are explained using phase portrait analysis. The dynamics of two coupled maps which model the behavior of two electrically coupled neurons is discussed. Synchronization regimes for spiking and bursting activity of these maps are studied as a function of coupling strength. It is demonstrated that the results of this model are in agreement with the synchronization of chaotic spiking-bursting behavior experimentally found in real biological neurons.Comment: 9 pages, 12 figure

ОЦЕНКА СОЦИАЛЬНО-ПСИХОЛОГИЧЕСКИХ ПОСЛЕДСТВИЙ ПЕРЕЖИВАНИЯ РАДИАЦИОННОЙ ОПАСНОСТИ У РАЗНЫХ ВОЗРАСТНЫХ ГРУПП НАСЕЛЕНИЯ, ПРОЖИВАЮЩЕГО НА РАДИОАКТИВНО ЗАГРЯЗНЕННОЙ ТЕРРИТОРИИ РОССИИ

The results of evaluation of social-psychological consequences of radiation danger experience among different age groups of the population from contaminated areas of Russia (Oryol, Kaluga, Bryansk, Tula areas) among whom the unfavorable emotional and personal changes were registered due to subjective features of perception of radiation threat have been represented (“risk” group). Experimental sample of the research consisted of 1 544 people from Russia. One of the main results of this research is establishment of the fact that adverse emotional and personal changes in connection with subjective features of perception of radiation threat were revealed for 53,9% of respondents of advanced age and more than 20% of respondents of middle and young age from contaminated areas of Russia. Among the respondents from contaminated areas of Belarus, about a third surveyed from each age group get to “risk” group.В статье приведены результаты оценки социально-психологических последствий переживания радиационной опасности у разных возрастных групп населения, проживающего на радиоактивно загрязненной территории (РЗТ) Орловской, Брянской, Калужской и Тульской областей, у которых зафиксированы неблагоприятные эмоционально-личностные изменения в связи с субъективными особенностями восприятия угрозы радиационной опасности (группа «Риск»). Экспериментальная выборка исследования состояла из 1544 человек, проживающих на РЗТ.Одним из основных результатов исследования является установление того факта, что неблагоприятные эмоционально-личностные изменения в связи с субъективными особенностями восприятия угрозы радиационной опасности были выявлены у 53,9% респондентов старшего возраста и более 20% респондентов среднего и молодого возраста, проживающих на РЗТ.В целом данные исследования показывают существенную дифференциацию типичных тревог и переживаний респондентов группы «Риск», связанных с радиацией, в зависимости от их возраста