scholarly journals Experimental evidence for real-time song frequency shift in response to urban noise in a passerine bird

2012 ◽  
Vol 8 (2) ◽  
pp. 320-320 ◽  
Author(s):  
Eira Bermúdez-Cuamatzin ◽  
Alejandro A. Ríos-Chelén ◽  
Diego Gil ◽  
Constantino Macías Garcia
Keyword(s):  
Frequency Shift ◽  
Experimental Evidence ◽  
Real Time ◽  
Passerine Bird ◽  
Urban Noise ◽  
Song Frequency

Real-Time Measurement Method of Doppler Based on GPS Carrier Signals

2012 ◽  
Vol 226-228 ◽  
pp. 2050-2055 ◽  
Author(s):  
Shao Feng Dong ◽  
Bao Qiang Du ◽  
Wei Zhou
Keyword(s):  
Frequency Shift ◽  
Real Time ◽  
Measurement Method ◽  
Dynamic Range ◽  
Time Synchronization ◽  
Influencing Factor ◽  
Doppler Frequency ◽  
Time Measurement ◽  
Time Frequency ◽  
Real Time Measurement

According to Doppler effect of satellite on the time synchronization technology between satellite and the ground station, a real-time measurement method of Doppler is proposed based on GPS carrier signals. Using Doppler observations from GPS receiver, the method can real-timely measure Doppler frequency shift of GPS including dynamic Doppler and media Doppler whose error can be timely modified in the receiver end. Simulation results show that the frequency shift caused by dynamic Doppler, a main influencing factor in the course of transmission of time-frequency signal by GPS satellite, is between plus or minus several thousands Hz. Comparing to traditional measurement method of Doppler, the method makes it possible to fast track phase of signal in large dynamic range in synchronous technology.

scholarly journals Incremental and predictive interpretation: Experimental evidence and possible accounts

2015 ◽  
Vol 25 ◽  
pp. 57 ◽  
Author(s):  
Adrian Brasoveanu ◽  
Jakub Dotlacil
Keyword(s):  
Experimental Evidence ◽  
Real Time ◽  
Formal Semantics ◽  
Main Question ◽  
The Real ◽  
To Come ◽  
The Right ◽  
Present Experimental Evidence

The main question we investigate is whether meaning representations of the kind that are pervasive in formal semantics are built up incrementally and predictively when language is used in real time, in much the same way that the real-time construction of syntactic representations has been argued to be. The interaction of presupposition resolution with conjunctions vs. conditionals with a sentence-final antecedent promises to provide us with the right kind of evidence. Consider the following 'cataphoric' example and the contrast between "and" and "if": "Tina will have coffee with Alex again and / if she had coffee with him at the local cafe". We expect the second clause to be more difficult after "and" than after "if": the conjunction "and" signals that an antecedent that could resolve the "again" presupposition is unlikely to come after this point (the second conjunct is interpreted relative to the context provided by the first conjunct), while the conditional "if" leaves open the possibility that a suitable resolution for the "again" presupposition is forthcoming (the first clause is interpreted relative to the context provided by the second clause). We present experimental evidence supporting these predictions and discuss two approaches to analyze this kind of data.

Embedded Virtualization Techniques for Automotive Infotainment Applications

2014 ◽  
pp. 372-387
Author(s):  
Massimo Violante ◽  
Gianpaolo Macario ◽  
Salvatore Campagna
Keyword(s):  
Operating System ◽  
Embedded Systems ◽  
Experimental Evidence ◽  
Real Time ◽  
Operating Systems ◽  
Resource Usage ◽  
Single Chip ◽  
Real Time Operating System ◽  
Multicore Computing ◽  
Computing Platforms

Automotive infotainment applications are examples of embedded systems in which a heterogeneous software stack is used, which most likely comprises a real-time operating system, an automotive-grade Linux, and possibly Android. Thanks to the availability of modern systems-on-a-chip providing multicore computing platforms, architects have the possibility of integrating the entire software stack in a single chip. Embedded virtualization appears an interesting technology to achieve this goal, while providing the different operating systems the capability of exchanging data as well as optimizing resource usage. Although very well known in server-class systems, virtualization is rather new to the embedded domain; in order to leverage its benefits, it is therefore mandatory to understand its peculiarities and shortcomings. In this chapter, the authors illustrate the virtualization technologies with particular emphasis on hypervisors and Linux Containers. Moreover, they illustrate how those technologies can cooperate to fulfill the requirements on automotive infotainment applications. Finally, the authors report some experimental evidence of the performance overheads introduced when using embedded virtualization.

scholarly journals Experimental evidence for real-time song frequency shift in response to urban noise in a passerine bird

2010 ◽  
Vol 7 (1) ◽  
pp. 36-38 ◽  
Author(s):  
Eira Bermúdez-Cuamatzin ◽  
Alejandro A. Ríos-Chelén ◽  
Diego Gil ◽  
Constantino Macías Garcia
Keyword(s):  
Experimental Evidence ◽  
Signal Transmission ◽  
Low Frequency ◽  
Low Noise ◽  
Noise Levels ◽  
Short Term ◽  
Urban Noise ◽  
Low Frequencies ◽  
House Finches ◽  
Minimum Frequency

Research has shown that bird songs are modified in different ways to deal with urban noise and promote signal transmission through noisy environments. Urban noise is composed of low frequencies, thus the observation that songs have a higher minimum frequency in noisy places suggests this is a way of avoiding noise masking. Most studies are correlative and there is as yet little experimental evidence that this is a short-term mechanism owing to individual plasticity. Here we experimentally test if house finches ( Carpodacus mexicanus ) can modulate the minimum frequency of their songs in response to different noise levels. We exposed singing males to three continuous treatments: low–high–low noise levels. We found a significant increase in minimum frequency from low to high and a decrement from high to low treatments. We also found that this was mostly achieved by modifying the frequency of the same low-frequency syllable types used in the different treatments. When different low-frequency syllables were used, those sung during the noisy condition were longer than the ones sang during the quiet condition. We conclude that house finches modify their songs in several ways in response to urban noise, thus providing evidence of a short-term acoustic adaptation.

scholarly journals Real-time tacit bargaining, payoff focality, and coordination complexity: Experimental evidence

2017 ◽  
Vol 102 ◽  
pp. 687-699 ◽  
Author(s):  
Wolfgang J. Luhan ◽  
Anders U. Poulsen ◽  
Michael W.M. Roos
Keyword(s):  
Experimental Evidence ◽  
Real Time

scholarly journals Elucidating the real-time Ag nanoparticle growth on α-Ag2WO4during electron beam irradiation: experimental evidence and theoretical insights

2015 ◽  
Vol 17 (7) ◽  
pp. 5352-5359 ◽  
Author(s):  
Wyllamanney da Silva Pereira ◽  
Juan Andrés ◽  
Lourdes Gracia ◽  
Miguel A. San-Miguel ◽  
Edison Z. da Silva ◽  
...  
Keyword(s):  
Electron Beam ◽  
Experimental Evidence ◽  
Real Time ◽  
Electron Beam Irradiation ◽  
Atomic Scale ◽  
Ag Nanoparticle ◽  
Beam Irradiation ◽  
The Real ◽  
Nanoparticle Growth

The nucleation of Ag on α-Ag2WO4is investigated at atomic-scale by TEM and FE-SEM techniques. Ag-3 and Ag-4 centers of the (100) sub-surface are the most favorable to diffuse to form metallic Ag.

URBAN NOISE PREDICTS SONG FREQUENCY IN NORTHERN CARDINALS AND AMERICAN ROBINS

Bioacoustics ◽  
2011 ◽  
Vol 20 (3) ◽  
pp. 267-276 ◽  
Author(s):  
KERRI D. SEGER-FULLAM ◽  
AMANDA D. RODEWALD ◽  
JILL A. SOHA
Keyword(s):  
Urban Noise ◽  
American Robins ◽  
Song Frequency ◽  
Northern Cardinals
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