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Videnskabelige standarder, målesystem osv.

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  • af Dmitry Alexandrovich Zatuchny
    858,95 - 1.191,95 kr.

    This book presents concepts for radio engineers to ensure electromagnetic compatibility based on the methodological approaches to reduce the probability of failures of radio equipment and improve the flight safety of complex aerospace systems. The book deals with issues related to methods for assessing the electromagnetic compatibility of integrated ground and on-board complexes, methods for obtaining information about unintentional interference, the theory of predicting unintentional interference, experimental studies of the characteristics that determine electromagnetic compatibility, methods for calculating reference systems, the influence of the method of generating the output signals of the transmitting path on the relative level of spurious radiation, electromagnetic compatibility of ultrahigh-frequency devices with phase modulation, with the features of industrial noise, with the calculation of electromagnetic fields scattered elements of the airframe, with direction finding errors caused by the scattering of electromagnetic fields by elements of the airframe, with the evaluation of isolation between antennas in the presence of an electromagnetic screen, solving problems of electromagnetic compatibility of antenna devices with the model electromagnetic interference radio systems, calculation of electromagnetic compatibility of specific navigation systems, with the provision of electromagnetic compatibility in civil aviation, taking into account modern requirements.

  • af Amur B. Khashimov
    1.136,95 kr.

    This book discusses the principles of forming and analysis of mathematical models of a wide class of antenna systems, new scientific directions in the development and application of computational algorithms for the study of mathematical models for antenna arrays of radio navigating systems. The book is presented for specialists in antenna system design; it may be useful for students of radio engineering specialties. This book consequentially uses the asymptotic correspondence of two-dimensional and three-dimensional problems to antenna engineering, that includes the influence of the placement objects for a given limited class of problems. Rigorous electrodynamics formulations of models and the use of efficient numerical methods provide the reliability and accuracy of modeling.

  • af Rodorico Giorgi, Kate Seymour, Rocco Furferi & mfl.
    1.428,95 - 2.337,95 kr.

  • af Alessandro Ferrero
    1.024,95 - 1.357,95 kr.

    This book offers up-to-date information and guidance on the application of metrology in legal proceedings, clarifying the limits of validity of scientific evidence and presenting an illuminating series of case studies in which measurement uncertainty has played an important role. The fundamental concepts of metrology are discussed, and it is explained how metrology is capable of quantifying the reliability of measurement results and thereby contributing to appropriate decision making. With the aid of the presented case studies, this book will assist readers in understanding how legal decisions should be made in the presence of uncertainty. Areas covered in those studies include breath alcohol concentration analysis, and DNA profiling. Nowadays, decisions in most legal cases are based on evidence obtained through scientific analysis involving the acquisition of accurate measurements. Against this background, Forensic Metrology will be of value for lawyers and judges in both civil and common law countries, as well as engineers and other scientists with an interest in the subject.

  • af Lars Bengtsson
    1.701,95 kr.

    This book highlights the electrical engineering aspects of a typical physics laboratory. To perform a sound experiment in a physics laboratory, it is paramount that readers understand the equipment and methods used to collect the data. This includes sensors (e.g., thermocouples and vacuum gauges), amplifiers (e.g., instrumentation amplifiers and lock-in amplifiers), oscilloscopes and probes (active probes and current probes), transmission cables (50-ohm termination) and noise shielding (grounding), spectrum analyzers (FFT and heterodyne technique), ADCs and digital signal processing, convolution and correlation, data analysis such as curve fitting, and uncertainty calculations (uncertainty ¿budgets¿). The readers need to know about electromagnetic crosstalk, time-to-digital converters, student-t distributions, PID controllers, spectral leakage, and windows. This book helps readers understand all of that.

  • af Sergey Viktorovich Dvornikov
    941,95 - 1.274,95 kr.

    This book presents the basics of building various types of amplifiers, the most widely used in the composition of modern specialized radio receivers, as well as the principles of building digital radio receivers. The rapid development of modern telecommunications systems, aviation equipment, and space systems for various functional purposes, as well as new information technologies, is inextricably linked with the theory of building radio receivers. Radio receivers are an integral part of the radio line, which largely determine the quality of its operation, both in normal operating conditions and in a complex interference environment. Since the creation of the first lightning detector in 1895, the technique of radio receiving devices went a long way to the development of modern automated digital systems. 

  • af Anatoly Ivanovich Kozlov
    692,95 - 987,95 kr.

    This book highlights the capabilities and limitations of radar and air navigation. It discusses issues related to the physical principles of an electromagnetic field, the structure of radar information, and ways to transmit it. Attention is paid to the classification of radio waves used for transmitting radar information, as well as to the physical description of their propagation media. The third part of the book addresses issues related to the current state of navigation systems used in civil aviation and the prospects for their development in the future, as well as the history of satellite radio navigation systems. The book may be useful for schoolchildren, interested in the problems of radar and air navigation.

  • af Issam Abu-Mahfouz
    487,95 - 692,95 kr.

    This book emphasizes simple and concise coverage of the fundamental aspects of measuring systems. It is designed to provide the reader with essential knowledge regarding signals, signal analysis, signal conditioning circuits, and data acquisition systems. The prerequisites are a basic knowledge of multivariable calculus, introductory physics, and a familiarity with basic electrical circuits and components. Delivers topics and techniques that are fundamental to the understanding of the measurement process. These include standards, dynamic characteristics of measuring devices, statistical analysis of data, uncertainty analysis, signal conditioning devices, transistors,and logic circuits, analog to digital converters. To aid in the understanding of the subject matter and related applications, the book chapters are complemented with examples and problems. Careful attention was paid to the details of figures and illustration to help enforce the learning objectives of this book.

  • af Mingjiang Zhang
    1.274,95 kr.

    This book highlights recent advances in novel optical fiber sensing technology and systems, using distributed fiber sensing technology based on chaotic lasers. Upon introducing the basic theory of chaotic laser, a novel light source, the book summarizes new frontier technologies, and presents photonic integration and sensing applications. The book elaborates on new technologies of distributed optical fiber sensors and its engineering applications, as well as narrow-linewidth fiber laser for optical fiber sensing. This book is of great reference for researchers and professionals in the area of optics and optoelectronics.

  • af Giulia Pancheri
    492,95 - 590,95 kr.

    This book tells the story of a unique scientific and human adventure, following the life and science of Bruno Touschek, an Austrian born physicist, who conceived and built AdA, the first matter-antimatter colliding-beam storage ring, the ancestor of the Large Hadron Collider at CERN where the Higgs Boson was discovered in 2012. Making extensive use of archival sources and personal correspondence, the author offers for the first time a unified history of European efforts to build modern-day particle accelerators,  from the dark times of war-ravaged Europe up to the rebuilding of science in Germany, UK, Italy and France through the 1950s and early 1960s. This book, the result of several years of scholarly research work, includes numerous previously unpublished photos as well as original drawings by Bruno Touschek. 

  • af Elena Wiederhold
    462,95 kr.

    The contributions in this volume shed light on the concepts of "Nature" and "Normativity" from diverse perspectives and interdisciplinary approaches. In an interdisciplinary tandem symposium with invited guests, we successfully brought together vastly different fields, sparking inspiring discussions. Furthermore, the Johanna Quandt Young Academy Fellows engaged with the concepts of "Tenets", "Variations", and "Transformations." In doing so, their thoughts flowed into the depths of their individual research fields as well as the currents of ongoing societal debates - whether related to the inexorable digitization, the intricate dynamics of gender and political power, or the pressing questions of global health and climate change. At the culmination of this intellectual journey, fueled by curiosity and eagerness for knowledge, lies a profound reflection on the significance and impact of their own research approaches. This work also presents a comprehensive explanation of the robust concept and structural cornerstones of Johanna Quandt Young Academy, alongside the fundamental guiding principle that forms the basis of our academic endeavor.

  • af American Institute of Mining and Meta
    517,95 kr.

  • af United States National Bureau of Sta
    352,95 kr.

  • af Joseph David Everett
    227,95 - 367,95 kr.

  • af United States National Bureau of Sta
    157,95 kr.

  • af Heinrich Julius Klaproth
    292,95 kr.

  • af James B. Thomson
    327,95 kr.

  • af Demetrios Matsakis
    1.403,95 kr.

    This book provides a comprehensive, systematic description of modern timekeeping and its specializations. Introductory chapters discuss the concept of time and its definition, then briefly look at pre-Atomic Era timekeeping to set the stage for the introduction of the atomic clock. Subsequent chapters focus on concepts such as frequency stability and measurement uncertainty, as well as computer network time-synchronization protocols including Network Time Protocol (NTP) and Precise Time Protocol (PTP). The book then delves into the nuts and bolts of the Global Navigation Satellite Systems (GNSS), Two-Way Satellite Time and Frequency Transfer, and Optical Time and Frequency Transfer. Timescale theory is then described as a way to combine clock data, and the algorithms and procedures used to generate Coordinated Universal Time (UTC) are given. Finally, there is a look at modern applications of timekeeping and time transfer.Featuring a glossary of all key terms, this book is highly recommended for trained or incoming physicists, engineers, or mathematicians working, for example, in manufacturing or timing laboratories. Additionally, it is suitable for use in introductory university courses dealing with the subject of timekeeping.

  • af Muhamad Husaini Abu Bakar
    411,95 kr.

  • af United States National Bureau of Sta
    342,95 kr.

  • af Shengxian Shi
    1.307,95 kr.

    This book provides a comprehensive guide to 3D Light-Field camera based imaging, exploring the working principles, developments and its applications in fluid mechanics and aerodynamics measurements. It begins by discussing the fundamentals of Light-Field imaging and theoretical resolution analysis, before touching upon the detailed optics design and micro-lens array assembly. Subsequently, Light-Field calibration methods that compensate for optical distortions and establish the relations between the image and real-word 3D coordinates are covered. This is followed by Light-Field 3D reconstruction algorithms which are elaborated for micrometer-scale particles and centimeter-scale physical models. Last but not least, implementations of the preceding procedures to selected fundamental and applied flow measurement scenarios are provided at the end of the book.  Development and Application of Light-Field Cameras in Fluid Measurements gives an in-depth analysis of each topic discussed, making it ideal as both an introductory and reference guide for researchers and postgraduates interested in 3D flow measurements.

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