Results 251 to 260 of about 6,937,440 (273)
Some of the next articles are maybe not open access.
Receiver bias for colourful signals
Animal Behaviour, 2003Animals tend to respond more strongly to signals that are more colourful and such signals are also common in nature.
Liselotte Jansson, Magnus Enquist
openaire +1 more source
The FASEB Journal, 2018
The ghrelin receptor [growth hormone secretagogue receptor (GHSR)‐1a] represents a promising pharmacologic target for the treatment of metabolic disorders, including obesity and cachexia, via central appetite modulation.
Valerie T. Ramírez +9 more
semanticscholar +1 more source
The ghrelin receptor [growth hormone secretagogue receptor (GHSR)‐1a] represents a promising pharmacologic target for the treatment of metabolic disorders, including obesity and cachexia, via central appetite modulation.
Valerie T. Ramírez +9 more
semanticscholar +1 more source
Conflict, receiver bias and the evolution of signal form
Philosophical Transactions of the Royal Society of London. Series B: Biological Sciences, 1995Abstract In a model, conflicts of interest between communicating individuals are shown to have an important influence on the cost and form of signals that evolve. Two types of conflict are considered: competition between senders to obtain a response from the receiver, and conflict between the sender and the receiver.
A, Arak, M, Enquist
openaire +2 more sources
Bounds on the Bias of Signal Parameter Estimators
Bell System Technical Journal, 1969Any estimator which is constrained to take values in a finite range is, in general, biased. Many times the bias is unknown; furthermore, in some cases the bias may become the main contributor to the mean square error of an estimator. This paper derives upper and lower bounds on the bias of a finite-range, signal parameter estimator.
openaire +2 more sources
Snapshot of the cannabinoid receptor 1-arrestin complex unravels the biased signaling mechanism.
Cell, 2023Cannabis activates the cannabinoid receptor 1 (CB1), which elicits analgesic and emotion regulation benefits, along with adverse effects, via Gi and β-arrestin signaling pathways. However, the lack of understanding of the mechanism of β-arrestin-1 (βarr1)
Yu-Ying Liao +10 more
semanticscholar +1 more source
Estimation bias variation on beamformed signals
IEEE Transactions on Antennas and Propagation, 1995Digital beamforming is widely used for estimating the direction of arrival (DOA) of signals incident on an array of antennas. It is well known that conventional beamforming has limited spatial resolution determined by the aperture of the array. It is also known that multiple signals incident on the array "bias" the DOA estimates of every other incident
M.A. Zatman +3 more
openaire +1 more source
The effect of nonlinear signal transformations on bias errors in elastography
IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 2000We have reported several artifacts in elastography (1991). These include mechanical artifacts, such as stress concentration, and signal processing artifacts, such as zebras, which are caused by bias errors incurred during the estimation of the peak of correlation functions using a curve-fitting method.
S K, Alam, J, Ophir
openaire +2 more sources
Bias analysis on return signal simulator of radar altimeter
Proceedings of 2011 International Conference on Electronic & Mechanical Engineering and Information Technology, 2011The radar altimeter prelaunch calibration was commonly carried our by return signal simulator. The principles of return signal simulator, biases such as quadratic phase bias, amplitude and phase biases, delay bias were described in detail in this paper. In the last section the overall system bias on return signal simulator was calculated.
Chuan-dong Xu, Xi-Yu Xu, Shuangbao Yang
openaire +1 more source
Ranging Bias of COMPASS Satellite Signals
2015Quantitative evaluation of signal quality of navigation satellites in orbit is one of the difficulties in satellite navigation signal quality monitoring research, so a quantitative evaluation method based on theoretic ranging bias is proposed. Based on Vernier sampling principle and a large diameter parabolic antenna is used for in-orbit satellite ...
Jiancheng Liu +3 more
openaire +1 more source
Signal Analysis in Back Bias Speed Sensor Systems
2013 European Modelling Symposium, 2013Wheel speed sensors determine the angular velocity of rotating axes and are widely used in modern industry with a variety of applications. This paper provides a general introduction to back bias speed sensor systems, presenting and discussing the numerous parameters of a general 3D model.
Michael Ortner +3 more
openaire +1 more source