Results 231 to 240 of about 1,092,692 (265)
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Drift Force and Added Resistance
2021This chapter deals with the stationary second-order force exerted on the body by regular waves. Of most interest is the longitudinal force component, the added resistance. The chapter gives a rigorous derivation of the second-order force, including effects which are usually neglected in the relevant literature.
Bettar Ould el Moctar +2 more
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Perception of added airflow resistance in humans
Respiration Physiology, 1966Abstract Detection of added airflow resistance was measured in various conditions with human subjects and thresholds for perception of resistances compared. Thresholds for perception were markedly different in some conditions of the experiments when expressed in terms of the absolute amount of resistance added. However, when thresholds were expressed
R L, Wiley, F W, Zechman
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Effect of lithium on the responses to added respiratory resistances
Journal of Clinical Psychopharmacology, 1983IN spite of extensive experience with the use of lithium as a psychoactive drug in manic-depressive disorders, little is known about its effects on the control of breathing.
M, Weiner +4 more
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Volume and pressure during transient added resistance
Respiration Physiology, 1988Total respiratory resistance (Rrs) can be computed from measurements of flow before and during a brief period of added resistance. This "added resistance' method does not require measurement of total driving pressure (Pt). One of the assumptions of this method is that the change in Pt (delta Pt) is negligible during the time of increased resistance. To
J, Green +4 more
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Resisting flooding attacks in ad hoc networks
International Conference on Information Technology: Coding and Computing (ITCC'05) - Volume II, 2005Mobile ad hoc networks will often be deployed in environments where the nodes of the networks are unattended and have little or no physical protection against tampering. The nodes of mobile ad hoc networks are thus susceptible to compromise. The networks are particularly vulnerable to denial of service (DOS) attacks launched through compromised nodes ...
Ping Yi +3 more
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Numerical Prediction of the Added Resistance of Ships in Waves
Volume 2: CFD and VIV, 2014The added resistance in waves is computed for different ship types using two different Reynolds-Averaged Navier-Stokes Equations (RANSE) solvers, namely Comet and interFoam (OpenFOAM). Hence, the RANS equations are implicitly coupled with the non-linear equations of motions for six degrees of freedom and the solvers are extended by algorithms for mesh ...
Ley, Jens +2 more
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On the relation of added mass and added resistance due to wall interference
Ship Technology Research, 2018This paper is devoted to the hydrodynamic interplay of rigid bodies in direct proximity. Emphasis is given to proximity influences on inertia and resistance forces. The numerical study employs an overset grid procedure, which accounts for the mechanical contact of rigid bodies, to investigate contact simulations of a circular cylinder and a sphere with
S. Schubert, T. Rung
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A Study on the Added Resistance Performance of Catamarans in Waves
Volume 11A: Honoring Symposium for Professor Carlos Guedes Soares on Marine Technology and Ocean Engineering, 2018The added resistance of a catamaran advancing in waves is investigated in the framework of a non-viscous potential theory. A linear Boundary Element Method (BEM) is used for the first order seakeeping prediction and the mean longitudinal component of the second-order steady-state force is computed by using a near-field method.
Emanuela Ageno +4 more
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Determination of Total Respiratory Resistance in Health and Disease by Added External Resistance
Chest, 1988Previous studies have indicated that total respiratory resistance (Rrs) can be measured by addition of an external resistor. In an earlier study, the apparatus used to accomplish this included a multiperforated steel plate. In this study, we sought to improve the device. Details of this are given in this article.
S T, Chiang, J, Green, Y C, Kao
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Simulation of Added Resistance in High Waves
Volume 11: Prof. Robert F. Beck Honoring Symposium on Marine Hydrodynamics, 2015A vessel traveling across the sea experiences waves. The waves produce forces on the vessel resulting in added resistance. The forces are caused by the combination of wave and vessel motion. A variety of methods for prediction of added resistance in waves exists. The complexity and accuracy varies significantly. This paper focuses on numerical solution
Eivind Ruth +2 more
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