Conferences related to Permeability

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2020 IEEE International Magnetic Conference (INTERMAG)

INTERMAG is the premier conference on all aspects of applied magnetism and provides a range of oral and poster presentations, invited talks and symposia, a tutorial session, and exhibits reviewing the latest developments in magnetism.


2019 20th International Conference on Solid-State Sensors, Actuators and Microsystems & Eurosensors XXXIII (TRANSDUCERS & EUROSENSORS XXXIII)

The world's premiere conference in MEMS sensors, actuators and integrated micro and nano systems welcomes you to attend this four-day event showcasing major technological, scientific and commercial breakthroughs in mechanical, optical, chemical and biological devices and systems using micro and nanotechnology.The major areas of activity in the development of Transducers solicited and expected at this conference include but are not limited to: Bio, Medical, Chemical, and Micro Total Analysis Systems Fabrication and Packaging Mechanical and Physical Sensors Materials and Characterization Design, Simulation and Theory Actuators Optical MEMS RF MEMS Nanotechnology Energy and Power


2019 41st Annual International Conference of the IEEE Engineering in Medicine & Biology Society (EMBC)

The conference program will consist of plenary lectures, symposia, workshops andinvitedsessions of the latest significant findings and developments in all the major fields ofbiomedical engineering.Submitted papers will be peer reviewed. Accepted high quality paperswill be presented in oral and postersessions, will appear in the Conference Proceedings and willbe indexed in PubMed/MEDLINE & IEEE Xplore


2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)

Science, technology and applications spanning the millimeter-waves, terahertz and infrared spectral regions


2019 IEEE 69th Electronic Components and Technology Conference (ECTC)

premier components, packaging and technology conference


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Periodicals related to Permeability

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Antennas and Propagation, IEEE Transactions on

Experimental and theoretical advances in antennas including design and development, and in the propagation of electromagnetic waves including scattering, diffraction and interaction with continuous media; and applications pertinent to antennas and propagation, such as remote sensing, applied optics, and millimeter and submillimeter wave techniques.


Antennas and Wireless Propagation Letters, IEEE

IEEE Antennas and Wireless Propagation Letters (AWP Letters) will be devoted to the rapid electronic publication of short manuscripts in the technical areas of Antennas and Wireless Propagation.


Applied Superconductivity, IEEE Transactions on

Contains articles on the applications and other relevant technology. Electronic applications include analog and digital circuits employing thin films and active devices such as Josephson junctions. Power applications include magnet design as well asmotors, generators, and power transmission


Biomedical Engineering, IEEE Transactions on

Broad coverage of concepts and methods of the physical and engineering sciences applied in biology and medicine, ranging from formalized mathematical theory through experimental science and technological development to practical clinical applications.


Components and Packaging Technologies, IEEE Transactions on

Component parts, hybrid microelectronics, materials, packaging techniques, and manufacturing technology.


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Most published Xplore authors for Permeability

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Xplore Articles related to Permeability

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Laboratory investigation of permeability characteristics of dredged fill in the Qianwan area Shenzhen

[{u'author_order': 1, u'affiliation': u'Department of Civil Engineering, Henan Institute of Engineering, Zhengzhou, China', u'authorUrl': u'https://ieeexplore.ieee.org/author/38061127800', u'full_name': u'Zhang Ming', u'id': 38061127800}, {u'author_order': 2, u'affiliation': u'Management Committee of Zheng Dong Xin Qu, Construction and Environmental Protection Bureau, Zhengzhou, China', u'authorUrl': u'https://ieeexplore.ieee.org/author/38061738900', u'full_name': u'Xu Jin', u'id': 38061738900}, {u'author_order': 3, u'affiliation': u'China Academy of Railway Science, Beijing , China', u'full_name': u'Youming Zhao'}] 2011 International Conference on Electric Technology and Civil Engineering (ICETCE), 2011

The existing disadvantage of traditional permeability test apparatus in determining the permeability of high water content and large void ratio dredged fill is overcome by GDS consolidation test apparatus, which can directly measures permeability coefficient after consolidation tests under different consolidation pressures. Laboratory permeability tests are performed on dredged fill of high water content from 110 percent to 150 percent ...


Measurement methods of complex permittivity and permeability of sheet samples in free space in microwave range

[{u'author_order': 1, u'affiliation': u'Institute for Theoretical and Applied Electromagnetics of Russian Academy of Sciences (ITAE RAS) 13, Izhorskaya Str., Moscow, 125412, Russia', u'full_name': u'V. N. Semenenko'}, {u'author_order': 2, u'affiliation': u'Institute for Theoretical and Applied Electromagnetics of Russian Academy of Sciences (ITAE RAS) 13, Izhorskaya Str., Moscow, 125412, Russia', u'full_name': u'V. A. Chistyaev'}] 2010 20th International Crimean Conference "Microwave & Telecommunication Technology", 2010

A set of measurement methods of complex permittivity and permeability of sheet samples in free space in microwave range is elaborated. The measurements are realized in wide frequency band for comparatively small samples (compared to several wavelengths) with high accuracy due to using of Time Domain and compensation procedure on diaphragmatic horn antennas.


A new method for evaluating the coefficient of consolidation

[{u'author_order': 1, u'affiliation': u'Zhejiang Shuren University, Hangzhou, 310015, China', u'authorUrl': u'https://ieeexplore.ieee.org/author/38356931800', u'full_name': u'Feng Ming', u'id': 38356931800}, {u'author_order': 2, u'affiliation': u'Institute of Geotechnical Engineering, Zhejiang University, Hangzhou 310058, China', u'authorUrl': u'https://ieeexplore.ieee.org/author/37275192600', u'full_name': u'Wang Kun', u'id': 37275192600}, {u'author_order': 3, u'affiliation': u'Institute of Geotechnical Engineering, Zhejiang University, Hangzhou 310058, China', u'authorUrl': u'https://ieeexplore.ieee.org/author/38351222400', u'full_name': u'Xie Kang-he', u'id': 38351222400}] 2011 International Conference on Electric Technology and Civil Engineering (ICETCE), 2011

Based on Therzaghi's one dimensional consolidation theory, a new method for evaluating coefficient of consolidation is proposed in this paper, which is more convenient than Casagrande's log t method and Taylor's √t method. Consolidation and permeability combined tests by GDS advanced consolidation testing system show that the coefficient of consolidation derived by the new method is very close to that ...


Electromagnetic Units, the Giorgi System, and the Revised International System of Units

[{u'author_order': 1, u'affiliation': u'National Institute of Standards and Technology, Boulder, CO, USA', u'authorUrl': u'https://ieeexplore.ieee.org/author/37322363800', u'full_name': u'Ronald B. Goldfarb', u'id': 37322363800}] IEEE Magnetics Letters, 2018

The centimeter-gram-second system of electromagnetic units (EMU) has been used in magnetism since the latter part of the 19th century. The International System of Units (SI), a successor to Giorgi's 1901 rationalized four- dimensional meter-kilogram-second system, was adopted by the General Conference on Weights and Measures in 1960 with the ampere as the fourth base unit. However, EMU remains in ...


Background Theory

[{u'author_order': 1, u'full_name': u'Trevor S. Bird'}] Fundamentals of Aperture Antennas and Arrays: From Theory to Design, Fabrication and Testing, None

This chapter provides some background theory and introduces notation in preparation for use throughout the remainder of this text. The equations that were devised by James Clerk Maxwell and placed in differential form by Oliver Heaviside and Heinrich Hertz are introduced. Heaviside, and independently Hertz, reduced these 20 equations to the four vector field equations that are essentially used today. ...


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Educational Resources on Permeability

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IEEE-USA E-Books

  • Background Theory

    This chapter provides some background theory and introduces notation in preparation for use throughout the remainder of this text. The equations that were devised by James Clerk Maxwell and placed in differential form by Oliver Heaviside and Heinrich Hertz are introduced. Heaviside, and independently Hertz, reduced these 20 equations to the four vector field equations that are essentially used today. For Heaviside, the concepts of fields, symmetry and vector notation were vital. The partial field pairs, satisfy separate sets of Maxwell's equations. The time‐averaged conservation of energy in the electromagnetic field is given by Poynting's theorem. The chapter also summarizes the important concepts of field duality, equivalent sources and image theory. Finally, radiation from elementary sources is investigated, and this allows a description of some basic radiation parameters as well as an introduction to mutual coupling.

  • The 2D Scattering Equations for Dielectric Targets

    The behavior of the electromagnetic signal radiated by a ground-penetrating radar (GPR) and scattered by buried targets is governed by Maxwell's equations. So, in order to provide hopefully deep enough and self-consistent discussion of GPR data processing, this chapter starts from the beginning and provides the derivation of the whole formulation up to the migration and the linear inversion. This chapter describes the derivation of the scattering equations without considering the effect of the antennas, and the calculation of the incident field radiated by a filamentary current. It discusses plane wave spectrum and effective length of an electromagnetic source in a homogeneous space. The chapter considers the problem of inserting the source and receiver characteristics into the scattering operator. It calculates the far field in a homogeneous lossless space in terms of plane wave spectrum.

  • Magnetic Circuits and Transformers

    This chapter contains basic concepts that can be used for all rotating machines and for power transformers. It presents a more complete analysis and more detailed circuit models of real-life transformers. When the transformer operates in sinusoidal steady state, the corresponding phasor circuit can be used to analyse it. Three-phase transformers can have different construction modes. The chapter briefly presents only the transformers created as a three- phase bank of single-phase transformers. Magnetic hysteresis is important also from an energy point of view: it can be demonstrated that hysteresis phenomenon implies loss of energy in the magnetic circuit of the transformer, which reduces efficiency and heats the iron.

  • Metamaterial Antennas and Radiative Systems

    None

  • The 2D Scattering Equations for Magnetic Targets

    This chapter first considers two dimensional (2D) scattering equations for magnetic targets with only magnetic anomalies. Due to the linearity of the relationships between the magnetic fields and the Fitzgerald vector, the X-component and the Z-component, of the Fitzgerald vector, are considered as two separated potentials. Each of them is associated with an electromagnetic field, and the final solution is given by the sum of these two electromagnetic fields. The chapter then considers the joined contribution of both the X- and Z-components of the Fitzgerald vector. It presents the comprehensive scattered field due to the buried magnetic anomalies. Finally, the chapter presents the internal and external scattering equations in the case of both dielectric and magnetic anomalies, or (which is the same) in the presence of targets with both dielectric and magnetic properties different from those of the embedding soil.

  • Porous Media, Permittivity, Fluid Permeability of Shales and Seismic Coda

    This chapter discusses the characteristics of porous media and seismic coda waves. One of the important examples of a porous medium is oil shale. One is the permittivity and conductivity of the porous medium as given by Archie's law. The other is the flow of liquid such as oil through the porous medium as given by Darcy's law and "fluid" permeability, which is different from the "magnetic" permeability concept we commonly use in electromagnetic studies. The study of porous media is closely related to the "percolation theory" and the "fractal". The permeability of a porous medium such as shale is a measure of the resistance to the flow of a fluid through the medium. The chapter shows typical seismic waves observed at the receiver. The study of the P‐coda, S‐coda, and Rayleigh‐coda is critical to the understanding of the total seismic radiation.

  • Reluctance Method

    The reluctance method is a way of using Ampere's law to solve for magnetic fluxes and magnetic fields. For very simple problems, its results are often reasonably accurate, and thus it often serves as a first step in the process of designing magnetic actuators and sensors. This chapter highlights the steps involved in reluctance method, and provides examples for the method for a?>C?> steel path with airgap and for a sensor with variable airgap. The chapter provides a brief discussion on the concepts of fringing flux and complex reluctance, and is concluded by highlighting the limitations of reluctance method.

  • Fundamentals of Electromagnetic Scattering

    This chapter reviews the fundamental field equations and provides necessary information on boundary conditions and material relations that are used to model electromagnetic properties of materials. It describes the basic field solutions in the form of plane, cylindrical, and spherical waves, the tensor Green function of the vector wave equation, separation of fields in E and H modes, and introduces the electromagnetic form of the Huygens principle. The chapter begins by specializing Maxwell's equations to the case of homogeneous isotropic source‐free medium and noting that their solutions are waves with different propagation directions. The chapter shows that the combination of Maxwell's equations with all these conditions ensures the uniqueness of the solution of the time‐harmonic scattering problems. It presents some of the basic solutions and solution methods that are of particular importance for the electromagnetic scattering theory.

  • Propagation at THz Frequencies

    In this chapter we first briefly introduce Maxwell's equations and derive the Helmholtz equation, a special case of the wave equation, and introduce its different solutions for fields that may propagate in THz waveguides. The second section describes different waveguides operating at THz frequencies. The third section is devoted to the beam waveguide and quasi-optics. Material issues related to waveguides and quasi-optical components are also discussed. The chapter concludes with THz wave propagation in free space.

  • Fundamentals of the Reverberation Chamber

    Unlike an anechoic chamber (AC), a reverberation chamber (RC) has a completely different boundary and works in a very different way although it is also an indoor facility for electromagnetic measurements. This chapter reviews the fundamental theories for a RC and explains the frequently used figures of merit in RC. In the RC, the enhanced backscattering effect is very useful and can be used to characterise the performance of the RC and to measure the radiation efficiency of antennas. To quantify how close an RC is to an ideal RC, the goodness‐of‐fit test method can be used, but a predefined acceptance level is required to define. The field anisotropy coefficient is an alternative quantitative approach to quantify the performance of the RC. The K‐factor (or Rician K‐factor) is defined as a ratio between the direct power and the stirred power in the RC.



Standards related to Permeability

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IEEE Recommended Practice for Determining the Peak Spatial-Average Specific Absorption Rate (SAR) in the Human Head from Wireless Communications Devices: Measurement Techniques

To specify protocols for the measurement of the peak spatial-average specific absorption rate (SAR) in a simplified model of the head of users of hand-held radio transceivers used for personal wireless communications services and intended to be operated while held next to the ear. It applies to contemporary and future devices with the same or similar operational characteristics as contemporary ...


IEEE Standard for Safety Levels with Respect to Human Exposure to Radio Frequency Electromagnetic Fields, 3 kHz to 300 GHz

Recommendations are made to protect against established adverse health effects in human beings associated with exposure to electric, magnetic and electromagnetic fields in the frequency range of 3 kHz to 300 GHz. The recommendations are expressed in terms of basic restrictions (BRs) and maximum permissible exposure (MPE) values. The BRs are limits on internal fields, specific absorption rate (SAR), and ...



Jobs related to Permeability

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