Regimes of traction in concentrated contact lubrication

This contribution discusses different regimes of EHD lubrication from a film thickness formation point of view, and tries to reconciliate this with recent theories on EHD traction, as published by Bair and Winer

Титульні сторінки та зміст

This paper addresses the effects of modernization processes on occupational career attainment. We ask whether modernization processes increased the success of occupational careers, and whether the effect of social background varies by regional level of modernization. We analyse a unique data set with information about the careers of around 7000 men who were active in the labour market in the Netherlands between 1865 and 1928. Modernization processes are measured at the municipality level (e.g. presence of post office and train station, educational expansion). The results of cross-classified multilevel growth models show that in municipalities with more advanced modernization, men enjoy higher social status at the beginning of their career, but that their status grows more slowly over the course of their career. The effect of social background hardly varies in response to modernization processes. Our results indicate that regional modernization processes have had restricted impact on individual mobility outcomes

З історії та побуту українських чумаків у Нижньому Поволжі

The main stages of chumaks history and settlement emergence on the territory of modern Volgograd region of Russia in XVIII—XIX centuries are shown in the article. The author pays special attention to the role of Ukrainian chumaks in economic and cultural development of the virgin steppe area of the Lower Volga Region

The association between parenting behavior and somatization in adolescents explained by physiological responses in adolescents

Introduction: This study adds to the knowledge on somatization in adolescents by exploring its relation with parenting behavior and the mediating/moderating role of physiological responses in adolescents to parenting behavior. Method: Eighteen adolescents with high and 18 adolescents with low somatization scores and their mothers completed a discussion task, from which observed parenting behavior scores were derived. Skin conductance in adolescents was measured before and during the discussion. Results: For adolescents with high levels of physiological responses, unadaptive parenting was related to a higher chance of high somatization scores. For low physiologically responsive adolescents, the relation between parenting behavior and somatization was not significant. Conclusion: Parenting behavior is not univocally related to somatization in adolescents, but the association depends on physiological responses in adolescents. (C) 2014 Elsevier B.V. All rights reserved

Інтеграція радіоастрономії України в європейську радіоастрономічну науку

Виступ академіка НАН України О.О. Коноваленка

NGC 2362: a Template for Early Stellar Evolution

We present UBVRI photometry for the young open cluster NGC 2362. From analysis of the appropriate color-color and color-magnitude diagrams we derive the fundamental parameters of the NGC 2362 cluster to be: age = 5 (+1-2) Myr, distance = 1480 pc, E(B-V)=0.10 mag. The cluster age was independently determined for both high mass (2.1 - 36Msun) and low mass (0.7 - 1.2Msun) stars with excellent agreement between the ages derived using post-main sequence and pre-main sequence evolutionary tracks for the high and low mass stars respectively. Analysis of this cluster's color-magnitude diagram reveals a well defined pre-main sequence (covering DeltaV ~ 9 magnitudes in V and extending from early A stars to near the hydrogen burning limit) which makes this cluster an ideal laboratory for pre-main sequence evolution studies.Comment: 9 pages, 3 figures, to be published in ApJ

The Influence of Pregnancy on the Recurrence of Cutaneous Malignant Melanoma in Women

Objective. The aim of this study was to determine whether pregnancy increases the recurrence risk of cutaneous malignant melanoma (CMM) in women with a history of stage I CMM. Methods. The electronic medical databases of Medline and Embase were explored. All 1084 obtained articles were screened on title and abstract using predetermined inclusion and exclusion criteria. A critical appraisal of relevance and validity was conducted on the remaining full text available articles. Results. Two studies were selected. Both studies revealed no significant difference in disease-free survival between women with stage I CMM and the control population. Conclusion. Pregnancy does not increase the recurrence risk of CMM in women with a history of stage I CMM

Time correlations in a confined magnetized free-electron gas

The time-dependent pair correlation functions for a degenerate ideal quantum gas of charged particles in a uniform magnetic field are studied on the basis of equilibrium statistics. In particular, the influence of a flat hard wall on the correlations is investigated, both for a perpendicular and a parallel orientation of the wall with respect to the field. The coherent and incoherent parts of the time-dependent structure function in position space are determined from an expansion in terms of the eigenfunctions of the one-particle Hamiltonian. For the bulk of the system, the intermediate scattering function and the dynamical structure factor are derived by taking successive Fourier transforms. In the vicinity of the wall the time-dependent coherent structure function is found to decay faster than in the bulk. For coinciding positions near the wall the form of the structure function turns out to be independent of the orientation of the wall. Numerical results are shown to corroborate these findings.Comment: 25 pages, 14 figures, to be published in Journal of Physics