Magnetic field measurement
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The conference program will consist of plenary lectures, symposia, workshops and invitedsessions of the latest significant findings and developments in all the major fields of biomedical engineering.Submitted papers will be peer reviewed. Accepted high quality papers will be presented in oral and postersessions, will appear in the Conference Proceedings and will be indexed in PubMed/MEDLINE
The CDC is the premier conference dedicated to the advancement of the theory and practice of systems and control. The CDC annually brings together an international community of researchers and practitioners in the field of automatic control to discuss new research results, perspectives on future developments, and innovative applications relevant to decision making, automatic control, and related areas.
The Conference focuses on all aspects of instrumentation and measurement science andtechnology research development and applications. The list of program topics includes but isnot limited to: Measurement Science & Education, Measurement Systems, Measurement DataAcquisition, Measurements of Physical Quantities, and Measurement Applications.
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.
This symposium pertains to the field of electromagnetic compatibility.
The IEEE Aerospace and Electronic Systems Magazine publishes articles concerned with the various aspects of systems for space, air, ocean, or ground environments.
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.
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
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.
IEEE Communications Magazine was the number three most-cited journal in telecommunications and the number eighteen cited journal in electrical and electronics engineering in 2004, according to the annual Journal Citation Report (2004 edition) published by the Institute for Scientific Information. Read more at http://www.ieee.org/products/citations.html. This magazine covers all areas of communications such as lightwave telecommunications, high-speed data communications, personal communications ...
IEE Colloquium on Phased Arrays, 1991
The design of an active electronically scanned array antenna (AESA), in which amplitude and Gil are controlled by MMIC circuits requires a precise and convenient measurement bench, in order to adjust the field radiated by each source. To be effective, this bench must have a precision better than about 1 degrees in phase and 0.2 dB in amplitude. The principle ...
Radio Science, 2005
Two image reconstruction algorithms for microwave tomography are compared and contrasted. One is a general, gradient-based minimization algorithm. The other is the chirp pulse microwave computed tomography (CP-MCT) method, which is a highly computationally efficient reconstruction method but also a method best suited for low contrasts. The results of the simulations show that when imaging high-contrast objects, such as a ...
1962 IEEE International Solid-State Circuits Conference. Digest of Technical Papers, 1962
IEEE Conference Record - Abstracts. 1991 IEEE International Conference on Plasma Science, 1991
IEEE Conference Record - Abstracts. 1991 IEEE International Conference on Plasma Science, 1991
High Magnetic Field Science and its Application in the US - ASC-2014 Plenary series - 10 of 13 - Friday 2014/8/15
ISEC 2013 Special Gordon Donaldson Session: Remembering Gordon Donaldson - 6 of 7 - A high sensitive magnetometer system for natural magnetic field measurements
Spin Dynamics in Inhomogeneously Magnetized Systems - Teruo Ono: IEEE Magnetics Society Distinguished Lecture 2016
ASC-2014 SQUIDs 50th Anniversary: 4 of 6 - Keiji Enpuku
IEEE Magnetics 2014 Distinguished Lectures - Tim St Pierre
Innovative Transmission Line Measurement and Characterization Reduce Time to Repair for Complex Communication Systems: MicroApps 2015 - Keysight Technologies
Inspiring Brilliance: Maxwell, field theory and the road to relativity and quantum theory
Interaction of ferromagnetic and superconducting permanent magnets - superconducting levitation
Nanoscale Magnetism with Picosecond Time Resolution and High Sensitivity - Hendrik Ohldag - IEEE Magnetics Distinguished Lecture
IMS 2015: Robert H. Caverly - Aspects of Magnetic Resonance Imaging
ISEC 2013 Special Gordon Donaldson Session: Remembering Gordon Donaldson - 4 of 7 - MRI at 130 Microtesla
ISEC 2013 Special Gordon Donaldson Session: Remembering Gordon Donaldson - 5 of 7 - SQUID Instrumentation for Early Cancer Diagnostics
ASC-2014 SQUIDs 50th Anniversary: 2 of 6 - John Clarke - The Ubiquitous SQUID
ISEC 2013 Special Gordon Donaldson Session: Remembering Gordon Donaldson - 3 of 7 - MEG and ULF-MRI
A CMOS Qubit: Quantum & Probabilistic Computing - Mark Sanquer at INC 2019
High Frequency Magnetic Circuit Design for Power Electronics
Microfluidic devices for precision biological measurement: Stephen Quake
MIRAI Program and the New Super-high Field NMR Initiative in Japan - Applied Superconductivity Conference 2018
IMS 2011 Microapps - A Comparison of Noise Parameter Measurement Techniques
The design of an active electronically scanned array antenna (AESA), in which amplitude and Gil are controlled by MMIC circuits requires a precise and convenient measurement bench, in order to adjust the field radiated by each source. To be effective, this bench must have a precision better than about 1 degrees in phase and 0.2 dB in amplitude. The principle of the measure rests on a planar near-field-scanning and processing of measured data in which the exact (measured) positions of the sources are used instead of being reconstructed as well as the complex amplitudes of the fields, like in others methods. This method can take into account diffractive points like ends or obstacles and quantify their share in the overall radiation. It was implemented and used to adjust small arrays. Comparisons were made between theoretical and measured amplitudes and were very positive. Results on the overall precision are given in this paper.<<ETX>>
Two image reconstruction algorithms for microwave tomography are compared and contrasted. One is a general, gradient-based minimization algorithm. The other is the chirp pulse microwave computed tomography (CP-MCT) method, which is a highly computationally efficient reconstruction method but also a method best suited for low contrasts. The results of the simulations show that when imaging high-contrast objects, such as a breast cancer tumor, reconstructions made are comparable to results from the minimization algorithm below a contrast of about 10%. The simulations, however, show that the reconstructions made by the CP-MCT method are very robust to noise. The reconstruction of the conductivity using the minimization algorithm, on the other hand, is very sensitive to the level of noise. In spite of a strong degradation in the conductivity reconstructions, the corresponding permittivity reconstructions do not show the same sensitivity to the noise level.
The 3-hour magnetic activity index, Kp, is widely used for measuring the level of magnetospheric activity, and many magnetospheric properties are known to correlate with it. The common denominator for these different properties is the strength of the magnetospheric convection electric field, the large-scale electric field imposed across the magnetosphere by the flow of the magnetized solar wind past the Earth. While the relationship between Kp and the global convection field has long been known, the question of why the relationship exists has apparently not been addressed. In this report, it is proposed that because Kp is derived from magnetic variations obtained at subauroral stations, it is extremely sensitive to the latitudinal distance to the equatorial edge of the auroral region, where the principal causative currents flow. Since the auroral region maps to the plasma sheet in the magnetosphere, motion of the inner edge of the plasma sheet, which is determined by the strength of the convection field, causes significant changes in Kp. Thus, through its dependence on the latitude of the auroral current region, Kp can be viewed as a direct monitor of the strength of magnetospheric convection, explaining the success of previous Kp-dependent models of the global electric field.
The geomagnetic field is an important parameter in space physics. The International Geomagnetic Reference Field (IGRF) is a model of the Earth's main field. Current sources in the ionosphere, the interplanetary magnetic field, annual and diurnal variation, and other sporadic and unmodeled effects may alter the actual B field distribution. We investigate whether the model is nevertheless sufficiently accurate for computing ionospheric effects on radio frequency signals. Detailed analysis of scalar intensity is presented based on direct measurements of the magnetic field taken from UARS, SAC-C, Ørsted, and CHAMP, all satellites with magnetometers orbiting between 200 and 1000 km altitude. Our results indicate that the IGRF model is within 1% accuracy of the measured ionosphere B field, 92.80% of the time. Quality control issues associated with the scalar data are also discussed.
This guide applies to low-voltage ac power circuit breakers of the 635 V maximum voltage class with separately-mounted current-limiting fuses for use on ac circuits with available short-circuit currents of 200 000 A (rms symmetrical) or less. Low-voltage ac fused power circuit breakers and combinations of fuses and molded-case circuit breakers are not covered by this guide. This guide sets ...
This recommended practice provides overhead contact system maintenance practices and procedures including maintenance techniques, site inspection and test procedures, and maintenance tolerances, for heavy rail, light rail, and trolley bus systems.