نتایج جستجو برای: Radiation Therapy Freedom Degrees Modulation

تعداد نتایج: 1141751  

Ahmad Mostaar, Amin Asgharzadeh Alvar Tahmine Hoseinkhani

Introduction: Nowadays tendency to apply more degrees of freedom in high-tech radiotherapy systems, and consequent complex process to optimize dose calculation and delivery algorithms, is a challenge of radiation therapy optimization. Faster MLC speed, dose rate, Gantry angle variation, and other degrees, which have been utilized in IMRT, IMAT, VMAT, improved modulation of inte...

Journal: :IEEE Trans. Communications 2001
Seong Taek Chung Andrea J. Goldsmith

We examine adaptive modulation schemes for flat-fading channels where the data rate, transmit power, and instantaneous BER are varied to maximize spectral efficiency, subject to an average power and BER constraint. Both continuous-rate and discrete-rate adaptation are considered, as well as average and instantaneous BER constraints. We find the general form of power, BER, and data rate adaptati...

1999
Seong Taek Chung Sriram Vishwanath Andrea Goldsmith SEONG TAEK CHUNG

We examine adaptive modulation schemes for at-fading channels where the data rate, transmit power, and instantaneous BER are varied to maximize spectral e ciency, subject to an average power and BER constraint. Both continuous-rate and discrete-rate adaptation are considered, as well as average and instantaneous BER constraints. We nd that for a large class of modulation techniques and fading d...

Journal: :Synthese 2020

2001
MARCO TRAINI

The point of view I take to summarize some of the research activities in Italy in the field of hadronic physics, is determined by the (today accepted) fundamental degrees of freedom of the strong interactions, namely quarks and gluons. The Sec. 2 is devoted to the link of the fundamental theory of strong interactions, Quantum Chromodynamics (QCD), with effective degrees of freedom often used to...

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