Results 251 to 260 of about 1,205,866 (291)

Holographic Weak-Signal Enhancement Technique

Journal of Applied Physics, 1972
A holographic weak-signal enhancement technique (WSET) is described which enhances the image of the source of a weak signal of interest in the presence of an unwanted strong signal with very little a priori knowledge of the latter. The technique is most suitable for imaging applications in fields such as seismic or oceanographic holography, where the ...
R. K. Mueller, R. R. Gupta, P. N. Keating   +2 more
openaire   +1 more source

Weak Signal Detection Based on Signal-Correlation Principle

2009 5th International Conference on Wireless Communications, Networking and Mobile Computing, 2009
The weak signal embedded in various noises is the subject of weak signal detection, while the noises much stronger than the valuable signal, and must take measures to improve the S/N during measuring the signal. So based on the signal-correlation principle, separates the useful signal from the noises by the measured-method of signal-correlation ...
Daowen Liu, Lin Yao
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Amplification and phase conjugation of weak signals

Soviet Physics Uspekhi, 1992
The results of the study on phase conjugation of weak optical signals with the energy of units of photons are considered. Basic concepts of a semi-classical theoretical approach to describe amplification and phase conjugation (PC) of such signals are presented.
O.V. KULAGIN, G.A. PASMANIK, A.A. SHILOV
openaire   +1 more source

Television and Contraceptive Use – A Weak Signal?

The Journal of Development Studies, 2014
AbstractIn recent years, rural electrification and access to television have spread throughout the developing world. The values and cultural norms embodied in television programming have potentially profound implications for influencing behaviour, including reproductive decisions.
Peters, Jörg, Strupat, Christoph, Vance, Colin   +2 more
openaire   +1 more source

Multiple-weak-boson signals at hadron supercolliders

Physical Review D, 1992
Multiple-weak-boson signals expected at future hadron supercolliders from several sources will provide new ways to probe the underlying interactions. The production of {ital t{bar t}t{bar t}}, {ital t{bar t}} {ital H}{sup 0}, {ital H}{sup 0}{ital H0}, {ital t{bar t}} {ital W}{sup +}{ital W{minus}}, {ital t{bar t}Z}{sup 0}{ital Z0}, Z{sup 0}{ital Z0 ...
, Barger, , Stange, , Phillips
openaire   +2 more sources

Weak signals in crisis prevention

2005
This paper seeks to connect weak signals with the ability to analyze the human environment afforded by information technology. Two fields in which the application of weak signals is followed with particular interest are military and industrial espionage.
Kajava, Jorma, Savola, Reijo, Varonen, Rauno, Wiander, Timo   +3 more
openaire   +5 more sources

Exploring trends and ’weak signals’

1999
At the beginning of the era, about 2000 years ago, the average distance a person travelled in his total life was about 15,000 km, which is 500 km per year (Chatwin, 1988). During the period of industrialisation traffic volume was substituted by other modes of transport (inland waterways, rail) and rose to a world average of 1800 km in 1960.
openaire   +1 more source

Weak signal detection in SPC

Applied Stochastic Models in Business and Industry, 2019
AbstractChanges in the behavior of dynamic systems are detected based on changes in the monitored quantities or their characteristics. This detection usually takes place by monitoring the time evolution of a variable and detecting the change at the time when a predetermined threshold is exceeded.
openaire   +1 more source

Leading by Weak Signals

2023
Peter Gomez, Mark Lambertz
openaire   +1 more source

A framework to identify and respond to weak signals of disastrous process incidents based on FRAM and machine learning techniques

Chemical Engineering Research and Design, 2022
Hans J Pasman, Noor Quddus
exaly