Results 271 to 280 of about 73,095 (305)
Some of the next articles are maybe not open access.
Mechanical impedance characteristics of robots for coexistence with humans
Proceedings of International Conference on Robotics and Automation, 2002In the future, it is expected that robots will play important roles in coexisting with humans. Whenever humans come into contact with these robots they must be able to adjust their physical softness parameters, which will help humans remain calm and which will be favourable for human emotions.
Mohamed Sahbi Ben-Lamine +3 more
openaire +1 more source
Characteristic impedance of humid air
The Journal of the Acoustical Society of America, 1986This paper describes the effects of humidity and temperature on the characteristic impedance ρc of standard atmospheric air. The characteristic impedance decreases with humidity and temperature. An approximate equation is given for the computation of ρc over the range of relative humidity from 0–1.0, and temperature from 0°–30 °C.
openaire +1 more source
Characteristic impedance extraction using calibration comparison
IEEE Transactions on Microwave Theory and Techniques, 2001A robust line impedance identification method is presented in this paper. It determines the characteristic impedance of on-wafer thru-line-reflect (TLR) standards measured after an initial off-wafer line-reflect-match or TLR calibration. The only assumption made is that the obtained trans-wafer error boxes are a cascade of a symmetric probe-related ...
S. Vandenberghe +4 more
openaire +1 more source
Analysis of Respiratory Impedance Characteristics in Chronic Bronchitis
Respiration, 2009Impedance measurements of the respiratory system were performed by means of the technique of forced oscillations to study the mechanical characteristics of the respiratory system in 33 patients with chronic bronchitis without spirometric evidence of airway obstruction (FEV<sub>1</sub>≥70% predicted).
G J, Wesseling, E F, Wouters
openaire +2 more sources
Characteristic Impedance Measurement on Silicon
2000This paper examines a new method that accurately determines the characteristic impedance of planar transmission lines printed on lossy dielectrics, even when contact-pad capacitance and conductance are large. We demonstrate the method on a coplanar waveguide fabricated on fused silica and a microstrip line fabricated on a highly conductive silicon ...
U. Arz, D. F. Williams, H. Grabinski
openaire +1 more source
Rapid assessment of electrode characteristics for impedance imaging
Images of the Twenty-First Century. Proceedings of the Annual International Engineering in Medicine and Biology Society, 1990Electrical impedance imaging is the technique for producing images of the resistivity of internal body structures based on measurements of voltage and current from electrodes applied to the body's surface. When a multiplicity of electrodes are applied in one or more rows around a body structure such as the thorax or limb, it is useful to be able to ...
Jonathan C. Newell +2 more
openaire +2 more sources
Characteristic Impedance of Microstrip Lines
IEEE Transactions on Microwave Theory and Techniques, 1987It is shown that it is feasible to force the complex power P of microstrip line to be given by the usual circuit definition: P = I* V/2 where I and V are the current and voltage of the equivalent transmission line and * denotes complex conjugation. If this requirement is made, then the three common definitions of characteristic impedance (namely, the ...
openaire +1 more source
Impedance Characteristics Of Pumped Varactors.
1967PhD ; Electrical engineering ; University of Michigan, Horace H. Rackham School of Graduate Studies ; http://deepblue.lib.umich.edu/bitstream/2027.42/184982/2/6717823 ...
openaire +2 more sources
A new definition of characteristic impedance
1991 IEEE MTT-S International Microwave Symposium Digest, 2002It is shown how a novel de-embedding technique, appropriate for electromagnetic analyses, results in a new three-dimensional definition of characteristic impedance, the transverse electromagnetic TEM equivalent characteristic impedance. This new definition is appropriate and unique for all inhomogeneous, as well as homogeneous, media.
openaire +1 more source
A lightweight waterborne acoustic meta-absorber with low characteristic impedance rods
International Journal of Mechanical Sciences, 2023Jiawei Liu, Honggang Zhao, Jihong Wen
exaly