P2–32: Accurate calculation of the Schottky-Nordheim barrier functions

2010 ◽  
Author(s):  
Richard G. Forbes
Keyword(s):  
Accurate Calculation ◽  
Barrier Functions

On the convective diffusion under partial slip at wall

1989 ◽  
Vol 54 (4) ◽  
pp. 967-980 ◽  
Author(s):  
Ondřej Wein ◽  
Petr Kučera
Keyword(s):  
Mass Transfer ◽  
Numerical Solution ◽  
Analytic Solution ◽  
Convective Diffusion ◽  
Linear Velocity ◽  
Partial Slip ◽  
Accurate Calculation ◽  
Transfer Coefficients ◽  
Empirical Formulas ◽  
Mass Transfer Coefficients

Extended Leveque problem is studied for linear velocity profiles, vx(z) = u + qz. The existing analytic solution is reconsidered and shown to be inapplicable for the accurate calculation of mean mass-transfer coefficients. A numerical solution is reported and its accuracy is checked in detail. Simple but fairly accurate empirical formulas are suggested for the calculating of local and mean mass-transfer coefficients.

Variation in the wheat intake of individual sheep measured by use of labelled grain: behavioural influences

1981 ◽  
Vol 21 (111) ◽  
pp. 395 ◽  
Author(s):  
E Juwarini ◽  
B Howard ◽  
BD Siebert ◽  
JJ Lynch ◽  
RL Elwin
Keyword(s):  
Dominance Hierarchy ◽  
Tritiated Water ◽  
Supplementary Feeding ◽  
Previous Experience ◽  
Feed Consumption ◽  
Wheat Grain ◽  
Accurate Calculation ◽  
Early Introduction

A preliminary experiment with sheep in pens demonstrated that wheat grain could be labelled with tritiated water so that when fed it could provide data that would allow accurate calculation of individual feed consumption. This techinque was used with two groups of sheep fed supplementary wheat grain in paddocks. Half of the animals had previous experience of grain feeding some eight months earlier and the others had not eaten grain. Individual diversity of intake could be estimated usefully by tritium labelling of wheat, which was fed to the sheep in a group. The experiment showed that there was a threefold difference in the amount of wheat eaten between the lowest and highest intakes. Further, animals with previous experience of grain feeding consumed the entire ration initially, but those without previous experience did not consume all of the ration until two weeks after wheat feeding began. Over the period of measurement the experienced sheep consumed about 13% more wheat than the non-experienced group. There were insufficient aggressive acts to establish a dominance hierarchy in either group, although the experienced sheep were more aggressive than the others. Aggressiveness by one sheep towards other sheep did not result in higher wheat intakes by the former compared with other sheep in the group. The results are discussed in terms of the variability in acceptance of such supplements by animals, and of the value, later in life, of early introduction of supplementary feeding.

scholarly journals Multi-rate Control Design under Input Constraints via Fixed-Time Barrier Functions

2021 ◽  
pp. 1-1
Author(s):  
Kunal Garg ◽  
Ryan K. Cosner ◽  
Ugo Rosolia ◽  
Aaron D. Ames ◽  
Dimitra Panagou
Keyword(s):  
Rate Control ◽  
Control Design ◽  
Fixed Time ◽  
Input Constraints ◽  
Barrier Functions

Pursuer Coordination in Multi-Player Reach-Avoid Games through Control Barrier Functions

2020 ◽  
pp. 1-1
Author(s):  
Alexander Davydov ◽  
Phillip Rivera-Ortiz ◽  
Yancy Diaz-Mercado
Keyword(s):  
Barrier Functions

scholarly journals Synthesis of Stochastic Systems with Partial Information via Control Barrier Functions

2020 ◽  
Vol 53 (2) ◽  
pp. 2441-2446
Author(s):  
Niloofar Jahanshahi ◽  
Pushpak Jagtap ◽  
Majid Zamani
Keyword(s):  
Stochastic Systems ◽  
Partial Information ◽  
Barrier Functions
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