Results 11 to 20 of about 3,440,905 (299)

Equivalent Permeability Distribution for Fractured Porous Rocks: Correlating Fracture Aperture and Length

open access: yesGeofluids, 2020
Estimating equivalent permeability at grid block scale of numerical models is a critical issue for large-scale fractured porous rocks. However, it is difficult to constrain the permeability distributions for equivalent fracture models as these are ...
Tao Chen
doaj   +2 more sources

Equivalent Rope Length-Based Trajectory Planning for Double Pendulum Bridge Cranes with Distributed Mass Payloads

open access: yesActuators, 2022
The hoisting form in which the payload is hung on the hook by two rigging ropes is widely used in the industry, but it also results in the complex double pendulum dynamic of the bridge crane, making the anti-swing trajectory planning full of challenges ...
Qingxiang Wu, Ning Sun, Xiaokai Wang
doaj   +2 more sources

Comparison between SuperDARN flow vectors and equivalent ionospheric currents from ground magnetometer arrays [PDF]

open access: yes, 2012
Equivalent ionospheric currents obtained with the spherical elementary current systems (SECS) method and derived from nearly 100 ground magnetometers spread over North America and Greenland are compared with ionospheric flow vectors measured by the ...
Angelopoulos, V.   +6 more
core   +5 more sources

Lists of Spanish sentences with equivalent predictability, phonetic content, length, and frequency of the last word [PDF]

open access: yes, 2010
This paper presents a pool of Spanish sentences designed for use in cognitive research and speech processing in circumstances in which the effects of context are relevant.
Cervera Crespo, Teresa   +4 more
core   +1 more source

Perda de carga localizada em gotejadores integrados em tubos de polietileno Local head losses for integrated drippers in polyethylene pipes

open access: yesEngenharia Agrícola, 2010
Este trabalho foi desenvolvido para analisar as perdas de carga localizadas em gotejadores coaxiais integrados em tubos de polietileno. A perda de carga para diferentes vazões foi determinada em quatro modelos de tubos gotejadores, com sete repetições ...
Anthony W. A. Gomes   +3 more
doaj   +1 more source

Perda de carga em microtubos e conectores utilizados em microaspersão Head loss in microtubes and connectors used in microsprinkler systems

open access: yesEngenharia Agrícola, 2009
Este trabalho foi desenvolvido com o objetivo de ajustar equações que estimam a perda distribuída de carga em microtubos utilizados em microaspersão e a perda localizada de carga na passagem lateral do fluxo por meio dos conectores na linha lateral.
Danieli B. Zitterell   +3 more
doaj   +1 more source

Lengths May Break Privacy – Or How to Check for Equivalences with Length [PDF]

open access: yes, 2013
Security protocols have been successfully analyzed using symbolic models, where messages are represented by terms and protocols by processes. Privacy properties like anonymity or untraceability are typically expressed as equivalence between processes. While some decision procedures have been proposed for automatically deciding process equivalence, all ...
Vincent Cheval   +2 more
openaire   +3 more sources

Concatenated Irregular Variable Length Coding and Irregular Unity Rate Coding [PDF]

open access: yes, 2009
In this contribution we propose the novel serial concatenation of Irregular Variable Length Coding (IrVLC) and Irregular Unity Rate Coding (IrURC), where we matched the corresponding EXtrinsic Information Transfer (EXIT) functions to each other.
R. G. Maunder   +3 more
core   +1 more source

Perda de carga localizada em emissores não coaxiais integrados a tubos de polietileno Local head loss for uncoaxial drippers inserted in polyethylene pipes

open access: yesEngenharia Agrícola, 2009
Este trabalho apresenta os resultados de experimento conduzido para avaliar as perdas de carga localizadas em gotejados não coaxiais integrados a tubos de polietileno.
Osvaldo Rettore Neto   +3 more
doaj   +1 more source

Study on instability discriminating condition and permeability variation of triangle articulated structure in highly inclined goaf

open access: yesEnergy Exploration & Exploitation, 2022
The huge, inclined goaf formed by the mining of steeply inclined and extra thick coal seams has the characteristics of occupying a large space and being subject to complex breaking behavior of its overlying rock structure, especially the rock block ...
Song Qin   +3 more
doaj   +1 more source

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