Microwave Measurement: Instruments and Techniques

2018 ◽  
pp. 271-295
Author(s):  
Prakash Kumar Chaturvedi
Keyword(s):  
Microwave Measurement ◽  
Measurement Instruments ◽  
Instruments And Techniques

Call for Collaboration in WMO Project for the Assessment of the Performance of Flow Measurement Instruments and Techniques

2007 ◽  
Vol 133 (12) ◽  
pp. 1439-1440 ◽  
Author(s):  
Janice M. Fulford ◽  
Paul J. Pilon ◽  
Zurab Kopaliani ◽  
Patrick J. McCurry ◽  
Claudio Caponi
Keyword(s):  
Flow Measurement ◽  
Measurement Instruments ◽  
Instruments And Techniques

scholarly journals Measuring Cognitive Engagement: An Overview of Measurement Instruments and Techniques

2021 ◽  
Vol 8 (3) ◽  
pp. 63-76
Author(s):  
Shan Lİ
Keyword(s):  
Measurement Method ◽  
Current Practice ◽  
Empirical Work ◽  
Cognitive Engagement ◽  
Self Report ◽  
Measurement Instruments ◽  
Comprehensive Understanding ◽  
Analytical Perspective ◽  
Instruments And Techniques ◽  
Physiological Sensors

This paper adopted an analytical perspective to review cognitive engagement measures. This paper provided a comprehensive understanding of the instruments/techniques used to measure cognitive engagement, which could assist researchers or practitioners in improving their measurement methodologies. In particular, we conducted a systematic literature search, based on which the current practice in measuring cognitive engagement was synthesized. We organized and aggregated the information of cognitive engagement measures by their types, including self-report scales, observations, interviews, teacher ratings, experience sampling, eye-tracking, physiological sensors, trace analysis, and content analysis. We provided a critical analysis of the strength and weaknesses of each measurement method. Recommendations for measuring cognitive engagement were also provided to guide future empirical work in a meaningful direction.

Microwave Non-Destructive Testing of Coatings and Paints Using Free Space Microwave Measurement

2005 ◽  
Vol 2 (2) ◽  
pp. 17
Author(s):  
Norhayati Hamzah ◽  
Deepak Kumar Ghodgaonkar ◽  
Kamal Faizin Che Kasim ◽  
Zaiki Awang
Keyword(s):  
Free Space ◽  
Protective Coatings ◽  
Microwave Measurement ◽  
Multiple Reflections ◽  
Destructive Testing ◽  
Lens Antennas ◽  
Coatings And Paints ◽  
Microwave Nondestructive Testing ◽  
Mode Transitions ◽  
Diffraction Effects

Microwave nondestructive testing (MNDT) techniques are applied to evaluate quality of anti-corrosive protective coatings and paints on metal surfaces. A tree-space microwave measurement (FSMM) system is used for MNDT of protective coatings. The FSMM system consists of transmit and receive spot-focusing horn lens antennas, a vector network analyzer, mode transitions and a computer. Diffraction effects at the edges of the sample are minimized by using spot-focusing horn lens antennas. Errors due to multiple reflections between antennas are corrected by using free-space LRL (line, reflect, line) calibration technique. We have measured complex reflection coefficient of polyurethane based paint which is coated on brass plates.

Measurement Instruments at Your Fingertips

1999 ◽  
Vol 3 (2) ◽  
pp. 17-19 ◽  
Author(s):  
Daniel Moore ◽  
Fred B. Bryant ◽  
Evelyn Perloff
Keyword(s):  
Measurement Instruments

Development and validity evidence of the Spanish-speaking scale of sexual sensation seeking.

2019 ◽  
Author(s):  
Patricio Mena-Chamorro ◽  
Rodrigo Ferrer
Keyword(s):  
Sexual Activity ◽  
Undergraduate Students ◽  
Sensation Seeking ◽  
Two Dimensions ◽  
Personality Factor ◽  
Validity Evidence ◽  
Measurement Instruments ◽  
Multiple Partners ◽  
Time Space ◽  
Sexual Sensation Seeking

Background: STIs, principally HIV/AIDS, are public health problems that are transmitted by sexual risk behaviours, which have been associated with the sexual sensation seeking (an specific personality factor). In South American context, there are no measurement instruments with psychometric evidence for their use and, in other contexts, only the Sexual sensation seeking scale (Kalichman et al., 1994) is available, which is outdated in content and validity evidence. The purpose of this work is development a scale, in accordance with contemporary psychometric standards, to assess sexual sensation seeking for South Americans young people and adults. Method: instrumental study, with time-space sampling (n=813) of undergraduate students from the two Chilean cities with the highest rates of HIV. Results: Final scale have 8 items to assess two dimensions: 1) sexual emotions seeking; and 2) tendency to sexual boredom. The identified structure provides adequate levels of reliability (ω> .8; α> .7), presents validity evidence, based on the internal structure of the test, using CFA and ESEM (CFI> .95, TLI> .95, RMSEA <. 06), and based on the convergence with other measures (sexual activity with multiple partners, inadequate or insufficient use of protective barriers and sexual activity under the influence of alcohol or drugs). Conclusions: The Multidimensional Scale of Sexual Sensation Seeking evidence adequate psychometric properties to evaluate the search for sexual sensations in equivalents samples.

Enhancements of Non-contact Measurements of Electrical Waveforms on the Proximity of a Signal Surface Using Groups of Pulses

2002 ◽  
Author(s):  
Fenglei Du ◽  
Greg Bridges ◽  
D.J. Thomson ◽  
Rama R. Goruganthu ◽  
Shawn McBride ◽  
...  
Keyword(s):  
Integrated Circuits ◽  
Integrated Circuit ◽  
Signal To Noise Ratio ◽  
Electrostatic Force ◽  
Single Pulse ◽  
Electric Signal ◽  
Measurement Instruments ◽  
Cycle Times ◽  
Force Microscopy ◽  
And Performance

Abstract With the ever-increasing density and performance of integrated circuits, non-invasive, accurate, and high spatial and temporal resolution electric signal measurement instruments hold the key to performing successful diagnostics and failure analysis. Sampled electrostatic force microscopy (EFM) has the potential for such applications. It provides a noninvasive approach to measuring high frequency internal integrated circuit signals. Previous EFMs operate using a repetitive single-pulse sampling approach and are inherently subject to the signal-to-noise ratio (SNR) problems when test pattern duty cycle times become large. In this paper we present an innovative technique that uses groups of pulses to improve the SNR of sampled EFM systems. The approach can easily provide more than an order-ofmagnitude improvement to the SNR. The details of the approach are presented.

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