Results 61 to 70 of about 3,432,936 (199)

Wave-to-Wire Model of an Oscillating-Water-Column Wave Energy Converter and Its Application to Mediterranean Energy Hot-Spots

open access: yesEnergies, 2020
Oscillating water column (OWC) systems are among the most credited solutions for an effective conversion of the notable energy potential conveyed by sea waves.
Lorenzo Ciappi   +5 more
doaj   +1 more source

An Analytical Model for Rock Cutting with a Chisel Pick of the Cutter Suction Dredger

open access: yesJournal of Marine Science and Engineering, 2020
Cutter suction dredgers are important pieces of rock excavation equipment in port and waterway construction. It is valuable but difficult to properly estimate the cutting force on the chisel pick of the cutter suction dredger.
Yiping Ouyang   +3 more
doaj   +1 more source

An analytical model of a longitudinal-torsional ultrasonic transducer [PDF]

open access: yes, 2012
The combination of longitudinal and torsional (LT) vibrations at high frequencies finds many applications such as ultrasonic drilling, ultrasonic welding, and ultrasonic motors.
Al-Budairi, H., Lucas, M.
core   +1 more source

Magnetospheric–Ionospheric–Lithospheric Coupling Model. 1: Observations during the 5 August 2018 Bayan Earthquake

open access: yesRemote Sensing, 2020
The short-term prediction of earthquakes is an essential issue connected with human life protection and related social and economic matters. Recent papers have provided some evidence of the link between the lithosphere, lower atmosphere, and ionosphere ...
Mirko Piersanti   +7 more
doaj   +1 more source

Numerical method for the prediction of bending properties of glass-epoxy composites [PDF]

open access: yesActa Periodica Technologica, 2007
Mechanical properties of composite materials are conditioned by their structure and depend on the characteristics of structural components. In this paper is presented a numerical model by which the bending properties can be predicted on the basis of ...
Stamenović Marina R.   +3 more
doaj   +1 more source

Analytical properties of a three-compartmental dynamical demographic model

open access: yes, 2015
The three-compartmental demographic model by Korotaeyv-Malkov-Khaltourina, connecting population size, economic surplus, and educational level, is considered from the point of view of dynamical systems theory.
Postnikov, E. B.
core   +1 more source

Analytical Model of the Time Developing Turbulent Boundary Layer

open access: yes, 2007
We present an analytical model for the time-developing turbulent boundary layer (TD-TBL) over a flat plate. The model provides explicit formulae for the temporal behavior of the wall-shear stress and both the temporal and spatial distributions of the ...
A. Ferrante   +9 more
core   +1 more source

New Drag Force Formula of Bending Stems in Deriving Analytical Solutions of Velocity Profile for Flow Through Flexible Vegetation

open access: yesWater Resources Research
Investigations of water flow movements affected by vegetation is a research hotspot in vegetation ecological restoration. The theory and equations of the flow velocity distribution under the influence of rigid vegetation are relatively mature. This study
Jin‐Jin Li   +7 more
doaj   +1 more source

O Caso Nissan: superação da antinomia liderança versus burocracia?

open access: yesInternext: Revista Eletrônica de Negócios Internacionais, 2008
This article presents the results of a study about the Nissan’s succession process, which happened after the transference of shareholding control from the Japanese company to the French Renault and that appointed Brazilian executive Carlos Ghosn as ...
Daniel Lins, Milka Alves Correia
doaj   +1 more source

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