Random asynchronous sampling strategy for measurement instruments based on nonlinear signal conversion

1989 ◽  
Vol 136 (3) ◽  
pp. 141-150 ◽  
Author(s):  
F. Filicori ◽  
A. Menchetti ◽  
G. Iuculano ◽  
D. Mirri
Keyword(s):  
Sampling Strategy ◽  
Measurement Instruments ◽  
Signal Conversion ◽  
Asynchronous Sampling ◽  
Nonlinear Signal

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use and, in other contexts, only the Sexual sensation seeking scale (Kalichman et al., 1994) is available, which is outdated in content and validity evidence.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.

A CMT Device for Electric Energy Meter Detection

2020 ◽  
Vol 13 ◽  
Author(s):  
Zhi Zeng ◽  
Yongfu Zhou
Keyword(s):  
Magnetic Field ◽  
Constant Magnetic Field ◽  
Electromagnetic Interference ◽  
Production Efficiency ◽  
Electric Energy ◽  
Labor Cost ◽  
Automatic Testing ◽  
National Standard ◽  
Measurement Instruments ◽  
Detection Technology

Background: Detection technology is a product development technique that serves as a basis for quality assurance. As electric energy meters (EEMs) are measurement instruments whose use is mandatory in several nations, their accuracy, which directly depends on their reliability and proper functioning, is paramount. In this study, to eliminate electromagnetic interference, a device is developed for testing a set of EEMs under a constant magnetic field interference. The detection device can simultaneously test 6 electric meters; moreover, in the future, it will be able to measure the influence of magnetic field strength on the measurement accuracy of EEMs, thereby improving the production efficiency of electric meter manufacturers. Methods: In this study, we first design a 3D model of the detection device for a single meter component; then, we establish a network, which includes a control system, and perform the planning of the path of a block that generates a constant magnetic field. Finally, we control the three-axis motion and rotation of the block using a PLC to implement detection for the five sides of the EEM. Results & Discussion: The proposed device can accurately determine whether an EEM can adequately function, within the error range prescribed by a national standard, under electromagnetic interference; this can enable reliable, automatic testing and fault detection for EEMs. Experiments show that our device can decrease the labor cost for EEM manufacturers.

Innovations in Objectively Measuring Corruption in Public Procurement

2018 ◽  
Author(s):  
Mihály Fazekas ◽  
Luciana Cingolani ◽  
Bence Tóth
Keyword(s):  
Public Procurement ◽  
Risk Indicators ◽  
Future Research ◽  
Measurement Instruments ◽  
Country Level ◽  
Government Purchases ◽  
Micro Level ◽  
Supplier Risk ◽  
Expert Surveys ◽  
Do So

While there is continued interest in measuring governance, disagreement on how best to do so has only grown over time. To provide pointers at innovative and rigorous indicator building, this chapter documents innovations in measuring a particularly challenging governance dimension: corruption in public procurement. In hopes of inspiring future research, the chapter critically reviews objective corruption proxies using administrative data on government purchases falling in four broad categories: tendering risk indicators, political connections indicators, supplier risk indicators, and contracting body risk indicators. The findings indicate that the best measurement instruments focus on the transaction level (micro level) while allowing for consistent aggregations for time series and cross-country comparisons. Such actionable indicators capture behaviour as directly as possible rather than remaining at the country level. They also retain the relational or transactional aspects of governance, revealing a much more dynamic picture than widely used population and expert surveys.

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