نتایج جستجو برای: owc

تعداد نتایج: 331  

2014
SAIF SAAD HAMEED ARUN KUMAR SHUKLA

The Optical Wireless Communications (OWC) systems are attractive to provide broadband services due to their inherent wide bandwidth, easy deployment and no license requirement. The idea to employ the atmosphere as transmission media arises from the invention of the laser Li-Fi or optical Wi-Fi would be the best optimum solution over Wi-Fi technology, Li-Fi technology was first described and fin...

ژورنال: مهندسی دریا 2015

Oscillating water column (OWC) is one of the wave energy converting devices available. In this article, a numerical model has been introduced to simulate wave interaction with OWC in one dimensional plane. Mild slope equations have been used in one dimension. The pressure and water elevation inside OWC have been calculated using an iterative method. Also an absorbing boundary is used at the beg...

Journal: :journal of electrical and computer engineering innovations 2013
z. ghassemlooy d. wu m. a. khalighi x. tang

for an indoor non-directed line of sight optical wireless communication (nlos-owc) system we investigate the optimized lambertian order (olo) of light-emitting diodes (leds). we firstly derive an expression for the olo from a conventional lambertian led model. then, we analyze the indoor multi-cell nlos-owc channel characteristics including the optical power distribution and the multipath time ...

D. Wu M. A. Khalighi X. Tang Z. Ghassemlooy

For an indoor non-directed line of sight optical wireless communication (NLOS-OWC) system we investigate the optimized Lambertian order (OLO) of light-emitting diodes (LEDs). We firstly derive an expression for the OLO from a conventional Lambertian LED model. Then, we analyze the indoor multi-cell NLOS-OWC channel characteristics including the optical power distribution and the multipath time ...

Journal: :journal of mining and environment 2014
amir mollajan hossein memarian behzad tokhmechi

detection of oil-water contacts (owcs) is one of the primary tasks before evaluation of reservoir’s hydrocarbon in place, determining net pay zones and suitable depths for perforation operation. this paper introduces bayesian decision making tool as an effective technique in owc detecting using wire line logs. to compare strengths of the suggested method in detecting owc with conventional one, ...

Journal: :Environmental science & technology 2006
Chad A Kinney Edward T Furlong Steven D Zaugg Mark R Burkhard Stephen L Werner Jeffery D Cahill Gretchen R Jorgensen

In this study, the presence, composition, and concentrations of organic wastewater contaminants (OWCs) were determined in solid materials produced during wastewater treatment. This study was undertaken to evaluate the potential of these solids, collectively referred to as biosolids, as a source of OWCs to soil and water in contact with soil. Nine different biosolid products, produced by municip...

2013
Diana Bull Erick Johnson

A resistive control strategy to optimize pneumatic power for a floating OWC device is presented. This strategy utilizes a linear, frequency-domain performance model that links an oscillating structure to air-pressure fluctuations with a Wells Turbine in 3-dimensions. An array of field points defining the interior free surface allows hydrodynamic parameters relating to the fluctuating air-pressu...

2010
Wanan Sheng Tony Lewis

Oscillating Water Column (OWC) is one type of promising wave energy devices due to its obvious advantage over many other wave energy converters: no moving component in sea water. Two types of OWCs (bottom-fixed and floating) have been widely investigated, and the bottom-fixed OWCs have been very successful in several practical applications. Recently, the proposal of massive wave energy producti...

2016
Fang He Mingjia Li Zhenhua Huang

Integrating wave energy converters with breakwaters is a promising concept for wave energy utilization. On the basis of fulfilling the wave protection demands, pile-supported Oscillating Water Column (OWC)-type breakwaters can also meet the local needs of electricity far from the lands. In the present study, the wave energy extraction and vortex-induced energy loss of pile-supported OWC-type br...

2013
Maia Angelova

The maximum data rate that can be achieved in diffuse indoor optical wireless communication (OWC) is limited due to the effect of intersymbol interference (ISI). The adverse effect of ISI on the system

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