Results 291 to 300 of about 1,262,484 (349)

Pharmacokinetic lag time estimation

International Journal of Bio-Medical Computing, 1985
This note draws attention to a problem encountered when using the pharmacokinetic computer program CSTRIP for lag time estimation. The problem arises because data belonging to the lag phase is used for polyexponential parameter estimation. Simulated data are used to illustrate the effect on the fitted curve.
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Time lags in ecological systems

Journal of Theoretical Biology, 1975
Abstract A model representing ten species in a four trophic level community is constructed by using Volterra's equations including time lags, and is solved numerically for some values of the parameters. Classical discrete and continuous time lags yield similar results; simulating with discrete time lags thus appears useful. Parasitic versus predatory
H, Barclay, P, van den Driessche
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Temporal Causal Inference with Time Lag

Neural Computation, 2018
Accurate causal inference among time series helps to better understand the interactive scheme behind the temporal variables. For time series analysis, an unavoidable issue is the existence of time lag among different temporal variables. That is, past evidence would take some time to cause a future effect instead of an immediate response.
Du, Sizhen, Song, Guojie, Han, Lei, Hong, Haikun   +3 more
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Time lag in diffusion

Journal of Applied Polymer Science, 1986
AbstractAdsorption and desorption diffusion time lags are given for some homogeneous hollow cylinder and spherical shell membrane systems. The treatment relates to a constant diffusion coefficient with solution or sorption obeying Henry's law. Time lags for both “forward” and “reverse” flow have been determined and identities between them derived.
Richard Ash, James A. Barrie
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Thermometric Time Lag

Journal of Fluids Engineering, 1941
Abstract The purpose of this paper is to present facts and theory of thermometric time lag in a form suitable for industrial users of thermometers. The emphasis will be on the distant-reading type of thermometer, actuated by liquid expansion (mercury or other liquids), gas expansion, or vapor pressure, and mercury-in-glass therometers.
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Time-lagged Directed Information

2011 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2011
Directed Information (DI) has recently been introduced to quantify the causality between two signals. However, one major remaining issue with DI is the computational complexity which increases dramatically with the length of the signal. Current simplified DI computation methods are either model dependent or focus on short-time intervals losing most of ...
Ying Liu, Selin Aviyente
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Deflection Lag, Load Lag, and Time Lag of Buried Flexible Pipe

Journal of ASTM International, 2011
Abstract The Iowa formula was published by Professor M. G. Spangler of Iowa State Univ. in 1941 to predict the deflection of buried flexible pipe. In the equation, he used the term “deflection lag” to describe the increase in flexible pipe defection after the maximum load was reached over the pipe.
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Lag Time

This chapter explores the repeated displacement and enduring impact of the Second Indochina War on Vietnamese evacuees and refugees. It recounts Dương Văn Mai Elliott’s personal story to illustrate how families endure separations, ideological divisions, and global scattering.
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