Multi-modal geometrical non-linear free vibrations of composite laminated plates with the complex shape

Geometrically non-linear free vibrations of the composite laminated plates are investigated using new multi modal approach to discretization of motion equations . The non-linear governing equations for laminated plates are derived by Hamilton’s principle using first-order shear deformation theory. Due to proposed algorithm of the discretization all unknown functions except of transverse displacement are eliminated and governing equations are reduced to system of ordinary differential equations in time by the Bubnov-Galerkin procedure. The expansion of all unknown functions in the truncated Fourier series is performed using the eigenfunctions of the linear vibration problems and solutions of the sequence of elasticity problems. All auxiliary problems are solved by RFM (R-functions method)

Strategic Trade and Industrial Policies with International R&D Spillovers

本稿では,企業の研究開発(R&D)の成果が国境を越えてスピルオーバーする国際貿易モデルにおいて,輸出補助金ならびにR&D補助金の効果を分析する.国際寡占企業間のR&D投資競争がクールノー型数量競争ないしベルトラン型価格競争に先んじて行なわれるという仮定のもとで,輸出国の貿易政策と産業政策の最適な組合せを導出する.最適な輸出補助金とR&D補助金の符号は製品間の代替性,R&Dスピルオーバーの程度,そしてR&D投資の効率性をそれぞれ表すパラメーターに依存して変化することが示される.さらに,輸出国にとって利用可能な政策手段が1つしかない状況下での輸出補助金あるいはR&D補助金の最適性を検討する

Opportunity to study and analysis of traction abnormal mode electrical complex mine electric using the machine petri nets

The paper deals with the use of the apparatus for the study of Petri nets psevdoavariynyh modes of operation of electrical traction systems miner-axle locomotives. Models of traction electrical complex with protection switching converters from emergency situations.В статье рассмотрены вопросы использования аппарата сетей Петри для изучения псевдоаварийных режимов функционирования тяговых электротехнических комплексов рудничных двухосных электровозов. Представлены модели тягового элек- тротехнического комплекса с защитой импульсных преобразователей от аварийных ситуаций

Principles of Organizing Earthquake Forecasting Based on Multiparameter Sensor-WEB Monitoring Data

The paper describes an approach that allows, basing on the data of multiparameter monitoring of atmospheric and ionospheric parameters and using ground-based and satellite measurements, to select from the data stream a time interval indicating the beginning of the final stage of earthquake preparation, and finally using intelligent data processing to carry out a short-term forecast for a time interval of 2 weeks to 1 day before the main shock. Based on the physical model of the lithosphere-atmospheric-ionospheric coupling, the precursors are selected, the ensemble of which is observed only during the precursory periods, and their identification is based on morphological features determined by the physical mechanism of their generation, and not on amplitude selection based on statistical data processing. Basing on the developed maquette of the automatic processing service, the possibility of real-time monitoring of the situation in a seismically active region will be demonstrated using the territory of the Kamchatka region and the Kuril Islands

Voltammetric detection in flow-injection analysis using electrocatalytic systems

Specific features, the field of application, and restrictions of voltammetric detection in flow-injection analysis are considered. The typical examples illustrating advances in this promising direction are given. © 1996 MAK Haya/Interperiodica Publishing

Present state of the oscillopolarographic method of analysisc

This review considers the main achievements of oscillographic polarography with a given form of polarisation voltage. Methods for increasing the sensitivity and resolving power of this analytical method and its use as a method for studying the mechanism of electrochemical processes are discussed. The influence of various factors determined by the composition of the solution in the cell and by the nature of the substances being studied on the form of the oscillopolarographic curves, and the characteristic features of the use of the method in the analysis of inorganic and organic compounds are examined. © 1971 American Mathematical Society

Renewable electrodes in voltammetry

An overview of the progress achieved over the last 5-7 years in the fabrication of new electrodes with reproducible amperometric response for application in voltammetry is given. Advanced techniques for high-technology manufacturing of electrodes in the form of thin conducting films supported on inert matrices are discussed. © 1997 Plenum Publishing Corporation

Review articles and textbooks on special disciplines

Review articles are not only helpful in the preparation of lecture courses, but can also be used to train senior students. © 1996 MAEe Cyrillic signK Hayκa/Interperiodica Publishing

Current state of voltammetry and prospects for its development

Works on voltammetric analysis performed over the last decade are reviewed. Attention is given to the current methods for improving the selectivity of determination based on the modification of the electrode surface. The importance of voltammetric methods to the environmental analysis and monitoring, to the studies of redox properties of substances, and to detection in a fluid flow is pointed out. Some aspects of instrumentation of voltammetric measurements are considered. © 1996 MAK Hayka/Interperiodica Publishing

Development of electrochemical methods in Kazan

A sixty-year period of progress in the electrochemical methods of research and analysis in Kazan is surveyed. The importance of the interplay of ideas arising and developing in the cooperation of individual research groups working in the field of voltammetry is pointed out. This interplay facilitated the formation of scientific schools. The main avenues of inquiry in the field of electrochemical methods of analysis are outlined. Attention is drawn to the role of bibliometric and cognitive characteristics of scientific activity in the field of electrochemical methods of analysis