Справочник по расчету емкости, индуктивности и волнового сопротивления в электронной аппаратуре
This handbook presents a set of calculated analytical formulas for determining the basic electrophysical parameters of electronic equipment: electrical capacity, inductance and wave impedance. These parameters play an essential role in ensuring the signal integrity and power integrity of electronic equipment and its electromagnetic compatibility. It is especially important to have design ratios when designing transmission lines on printed circuit boards or in wiring with a given characteristic impedance. It is very important for developers and designers to obtain operational estimates of parameters in the early stages of design, which is possible using this handbook. The analytical expressions provided in it provide accuracy that is acceptable for engineering practice.
Each formula in the reference book is accompanied by tables with the results of calculations in a certain range of parameter values, the corresponding graphs and comments that allow you to gain experience in the physical interpretation of the results. For the most cumbersome analytical expressions, alternative compact expressions based on various approximations are proposed. This greatly simplifies the calculation.
The reference book is aimed at a wide range of specialists involved in the design of electronic equipment and printed circuit boards; it will be useful for practicing engineers who are engaged in the design of technical equipment
The present article analyzes the current state, trends and structure of costs in Russian railway transport companies, generalizing on the main calculation features of the passenger and freight transportation costs. Based on the results of the analysis, directions of improvement for the calculation methods in the studied companies are offered. The results of the study can be used as a basis for the development of management accounting methodology in Russia and abroad.
Johannes Kepler (1571–1630) spielte als genialer Entdecker von Naturgesetzen eine zentrale Rolle in der frühen Naturphilosophie Schellings und Hegels; die Romantik feierte ihn als Prototypen des Genies schlechthin. Um 1840 setzt sich Schelling in einem veränderten Kontext für die erste Gesamtausgabe der Werke Keplers ein: Die Naturphilosophie wird nun vom Empirismus und Induktivismus scharf kritisiert. Neu entdeckte Dokumente belegen, wie man dennoch auf Kepler zurückgreifen konnte; gezeigt wird, dass sich idealistische und nach-idealistische Philosophieauffassungen also nicht ausschließen, sondern dass die von Idealisten und Romantikern betonte Genialität Keplers, seine Phantasie und Intuition, zu Kennzeichen wissenschaftlicher Methode umgedeutet werden können. – Die Darstellung wird durchgehend von großenteils neu erschlossenen und hier erstmals bekanntgemachten Archivalien, vor allem aus Briefwechseln, begleitet.
The problem mentioned in the title is studied.
We consider the first boundary value problem for elliptic systems defined in unbounded domains, which solutions satisfy the condition of finiteness of the Dirichlet integral also called the energy integral.
The present manual is written on the basis of the course on inductive logic which is delivered in English to philosophy students of National Research University Higher School of Economics. The manual describes the main approaches to constructing inductive logic; it clarifies its key notions and rules, and it formulates its major problems. This introductory text can be useful for all readers who are interested in contemporary inductive logic.
Generalized error-locating codes are discussed. An algorithm for calculation of the upper bound of the probability of erroneous decoding for known code parameters and the input error probability is given. Based on this algorithm, an algorithm for selection of the code parameters for a specified design and input and output error probabilities is constructed. The lower bound of the probability of erroneous decoding is given. Examples of the dependence of the probability of erroneous decoding on the input error probability are given and the behavior of the obtained curves is explained.
The dynamics of a two-component Davydov-Scott (DS) soliton with a small mismatch of the initial location or velocity of the high-frequency (HF) component was investigated within the framework of the Zakharov-type system of two coupled equations for the HF and low-frequency (LF) fields. In this system, the HF field is described by the linear Schrödinger equation with the potential generated by the LF component varying in time and space. The LF component in this system is described by the Korteweg-de Vries equation with a term of quadratic influence of the HF field on the LF field. The frequency of the DS soliton`s component oscillation was found analytically using the balance equation. The perturbed DS soliton was shown to be stable. The analytical results were confirmed by numerical simulations.
The conference “2021 Systems of signals generating and processing in the field of on board communications” is organized with technical sponsorship of Russian (Moscow) IEEE Circuits and Systems (CAS04) Chapter IEEE Region 8, Russian Section Chapter, MTT/ED and Institute of Radio and Information Systems Association (IRIS), Vienna, Austria. The conference featured invited researchers, educators, managers, and graduate students, whose research activity, case studies or best practices, are shedding light on the theory or practice of engineering, include modern digital transportation systems design and technical operation, radio waves propagation, transmitting, receiving and processing signals in television and radio broadcasting devices, information technologies in transport. The main areas of the conference “Systems of signals generating and processing in the field of on board communications” include modern digital transportation systems design and technical operation, radio waves propagation, transmitting, receiving and processing signals in television and radio broadcasting devices, information technologies in transport. FIELD OF INTEREST: Components, Circuits, Devices and Systems; General Topics for Engineers; Signal Processing and Analysis. Reports presented at the conference are grouped in 6 sections: 1. Antennas and Radio Waves Propagation. 2. Navigation and Mathematical Algorithms of an Object Space Orientation. 3. Radiofrequency Applications. 4. Wire and Optical Communication and Control Systems. 5. Intelligent Transport Systems (ITS): Sub-section 1: Use of digital ITS infrastructure in telematic control systems on urban passenger transport Sub-section 2: Peculiarities of data exchange in cooperative ITS Sub-section 3: Theoretical Aspects of Artificial Intelligence Systems Development for Transportation Engineering Sub-section 4: Test methods of motor vehicles integrated into an intelligent transport environment 6. Digital signal processing in on-board radio systems
Radiation conditions are described for various space regions, radiation-induced effects in spacecraft materials and equipment components are considered and information on theoretical, computational, and experimental methods for studying radiation effects are presented. The peculiarities of radiation effects on nanostructures and some problems related to modeling and radiation testing of such structures are considered.
This volume presents new results in the study and optimization of information transmission models in telecommunication networks using different approaches, mainly based on theiries of queueing systems and queueing networks .
The paper provides a number of proposed draft operational guidelines for technology measurement and includes a number of tentative technology definitions to be used for statistical purposes, principles for identification and classification of potentially growing technology areas, suggestions on the survey strategies and indicators. These are the key components of an internationally harmonized framework for collecting and interpreting technology data that would need to be further developed through a broader consultation process. A summary of definitions of technology already available in OECD manuals and the stocktaking results are provided in the Annex section.