نتایج جستجو برای: media optimization

تعداد نتایج: 594053  

2017

We make the (non-realistic) assumption that every instance of media reference is strongly and positively correlated to a single stock y 2 [k], and it has no correlation with future performance of other stocks. This obviously makes our problem rather toyish; the stock exchange and media worlds have highly complicated correlations. However, it indeed arises from, and is motivated by, practical pr...

2003
Jacob Chakareski Bernd Girod

We consider diversity for media streaming in a rate-distortion optimization framework. A sender-driven transmission scenario is investigated, where diversity is achieved by using multiple transmission paths over the network. The proposed framework enables the sender to decide at every instant which packets, if any, to transmit and over which transmission paths in order to meet a rate constraint...

Journal: :Optics express 2014
Fabrice Devaux Jean-Pierre Huignard François Ramaz

A photorefractive BSO single crystal can be used for axially resolved acousto-optic imaging of thick scattering media in absence of a reference beam. This configuration renders the experimental setup easier to realize for imaging through thick scattering media with an improved optical etendue. We present here a model and simulations that explains these results. It is based on the spatial hetero...

2007
Edwin A. Marengo Mohamed R. Khodja

Abstract: A mathematical inverse source theory in substrate media is derived, with applications to analysis, source-synthesis and characterization of antennas embedded in substrates. The developed theory, which is based on optimization theory, and the associated computer illustrations, shed basic understanding, from first principles, of radiation enhancements due to substrates, such as reductio...

2000
Bin Wang Jennifer C. Hou

Multicast services have been increasingly used in large scale continuous media applications. The quality-of-service (QoS) requirements of these continuous media applications prompt the necessity for QoS-driven, constraint-based multi-cast routing. This article provides a comprehensive overview of existing multicast routing algorithms, protocols, and their QoS extension. In particular, we classi...

Journal: :Optics express 2014
Giulia Ghielmetti Christof M Aegerter

We present a method to directly image fluorescent structures inside turbid media. This is based on wave-front shaping to optimize the scattered light onto a single fluorescent particle, as the optical memory effect for a scanning image of the surroundings of this particle. We show that iterating the optimization leads to the focusing on a single particle whose surroundings are subsequently scan...

2003
Hamid Jafarkhani Homayoun Yousefi'zadeh Mehran Moshfeghi

In this research article, we present an analytical solution to the problem of power control in wireless media systems with multiple transmit antennas. We formulate an optimization problem aimed at minimizing total power consumption of wireless media systems subject to a given level of Quality of Service (QoS) and an available bit rate. Our formulation takes into consideration the power consumpt...

2004
Adam B. Milstein Charles A. Bouman Kevin J. Webb Rick P. Millane David A. Boas Seungseok Oh Michael D. Kennedy Jonathan J. Stott Jeffery S. Reynolds Mark A. Webster Mustafa Kamasak Richard D. Juday

Milstein, Adam B. Ph.D., Purdue University, August, 2004. Imaging of near-infraredfluorescence, absorption, and scatter in turbid media. Major Professor: Charles A.Bouman and Kevin J. Webb.A nonlinear, Bayesian optimization scheme is presented for reconstructing fluo-rescent yield and lifetime, the absorption coefficient, and the diffusion coefficient inturbid media, suc...

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