Results 251 to 260 of about 1,722,338 (297)
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Amplification and phase conjugation of weak signals
Soviet Physics Uspekhi, 1992The 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
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Weak signal identification with semantic web mining [PDF]
Expert Systems With Applications, 2013 We investigate an automated identification of weak signals according to Ansoff to improve strategic planning and technological forecasting. Literature shows that weak signals can be found in the organization's environment and that they appear in different contexts.
Dirk Thorleuchter, Dirk van den Poel
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On Weak Signal Detection With Compressive Measurements
IEEE Signal Processing Letters, 2018The problem of weak signal detection in Gaussian noise is addressed in the Neyman–Pearson framework with compressive measurements. A locally optimum detector is first devised assuming that the signal is nonsparse by approximating the test statistic around zero using a Taylor series, which is a good estimate only in a small radius around zero.
Kyatsandra G. Nagananda +1 more
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2018
As speed of change accelerates, it becomes increasingly difficult to predict changes with sufficient accuracy and reliability to permit a timely full-scale ...
H. Igor Ansoff +4 more
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As speed of change accelerates, it becomes increasingly difficult to predict changes with sufficient accuracy and reliability to permit a timely full-scale ...
H. Igor Ansoff +4 more
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The Scandinavian Journal of Economics, 2002
Akerlof, Spence and Stiglitz showed that competitive markets can perform very poorly in the presence of informational asymmetry. In this paper I show that if there is a signaling technology which is sufficiently strong (i.e., the marginal cost of signaling declines sufficiently rapidly with quality) the cost of sorting is low and a Nash equilibrium ...
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Akerlof, Spence and Stiglitz showed that competitive markets can perform very poorly in the presence of informational asymmetry. In this paper I show that if there is a signaling technology which is sufficiently strong (i.e., the marginal cost of signaling declines sufficiently rapidly with quality) the cost of sorting is low and a Nash equilibrium ...
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Extraction of a weak climatic signal by an ecosystem
Nature, 2002The complexity of ecosystems can cause subtle and chaotic responses to changes in external forcing. Although ecosystems may not normally behave chaotically, sensitivity to external influences associated with nonlinearity can lead to amplification of climatic signals.
Arnold H, Taylor +2 more
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Intermittent tracking in weak signal environments
2015 International Conference on Indoor Positioning and Indoor Navigation (IPIN), 2015Intermittent tracking or cyclic tracking is a common method used in modern Global Navigation Satellite System (GNSS) receivers to conserve power. It is critical for receivers in battery-operated devices like wearables, smartphones and handheld devices. These devices are often used in degraded or weak signal environments such as indoors.
Vijaykumar Bellad +2 more
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Estimation and detection of weak optical signals
IEEE Transactions on Information Theory, 1972In this paper we consider the problem of estimation and detection of Weak optical signals formulated as a problem in point process theory. Indeed at very low light intensity the only information available from an intensity detector is the random distribution of time instants \{t_i \} at which photons of the field are absorbed and photoelectrons emitted.
Odile Macchi, Bernard C. Picinbono
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Scenario Model for Weak Signal Detection
2011 Seventh International Conference on Signal Image Technology & Internet-Based Systems, 2011Due to multiplication of information sources as blogs or social networks, watchers have to deal with data in different formats and structures. Consequently, an adapted system, helpful for business intelligence activities, able to retrieve and process data from the Web, is required.
Emilien Bondu +4 more
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Role of Weak Signals in Acoustic Startle
The Journal of the Acoustical Society of America, 1970When a relatively weak pulse of noise precedes an intense (startle eliciting) stimulus by 5 msec, the latency of the rat's startle reaction to the intense signal is reduced. When, however, the same pulse of noise precedes the intense stimulus by 150 msec, the startle response to the intense stimulus is inhibited.
H S, Hoffman, B L, Wible
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