Results 31 to 40 of about 83,241 (203)

On Sensor Network Localization Using SDP Relaxation [PDF]

open access: yes, 2012
A Semidefinite Programming (SDP) relaxation is an effective computational method to solve a Sensor Network Localization problem, which attempts to determine the locations of a group of sensors given the distances between some of them [11]. In this paper,
Shamsi, Davood   +3 more
core  

Multireference Alignment using Semidefinite Programming

open access: yes, 2013
The multireference alignment problem consists of estimating a signal from multiple noisy shifted observations. Inspired by existing Unique-Games approximation algorithms, we provide a semidefinite program (SDP) based relaxation which approximates the ...
Bandeira, Afonso S.   +3 more
core   +1 more source

Charge‐Acoustic Phonon Coupling Determined Carrier Transport Properties in FAxMA1−xPbBr3 Perovskite Single Crystals

open access: yesAdvanced Science, EarlyView.
This study investigates acoustic phonon‑carrier coupling in FAxMA1−xPbBr3 single crystals using time‑domain Brillouin scattering. The results show that increasing the FA content in FAxMA1−xPbBr3 single crystal reduces both the elastic constant and the intrinsic carrier mobility governed by the acoustic phonon‑carrier coupling.
Wei Zhang   +7 more
wiley   +1 more source

A coordinated dispatch method for distribution and microgrid systems based on semidefinite programming relaxation

open access: yesZhejiang dianli
The widespread adoption of distributed energy resources (DER) has significantly increased the complexity of distribution networks. Coordination between distribution networks and microgrid(s) can facilitate the integration of distributed energy, but ...
CHEN Zhe   +5 more
doaj   +1 more source

Terahertz Channel Modeling, Estimation and Localization in RIS‐Assisted Systems

open access: yesAdvanced Electronic Materials, EarlyView.
Reconfigurable intelligent surfaces have become a recent intensive research focus. Based on practical applications, channel strategies for RIS‐assisted terahertz wireless communication systems are categorized into three different types: channel modeling, channel estimation, and channel localization.
Hongjing Wang   +9 more
wiley   +1 more source

Meteorological Issues and Technological Progress in the Development of New Energy Systems

open access: yes南方能源建设
[Objective] New energy power generation is expected to continue its development characterized by large scale, high proportion, marketization and high quality in the future.
Yanbo SHEN
doaj   +1 more source

Spray-dried porcine plasma in dog foods: implications on digestibility, palatability and haematology

open access: yesSemina: Ciências Agrárias, 2019
The objective of this study was to evaluate food palatability, digestibility and blood parameter of dogs fed diets containing increasing levels of spray-dried porcine plasma (SDP). We also aimed to evaluate the SDP digestibility for dogs. We used 36 dogs
Talita Andrade   +5 more
doaj   +1 more source

Phase Transitions in Semidefinite Relaxations

open access: yes, 2016
Statistical inference problems arising within signal processing, data mining, and machine learning naturally give rise to hard combinatorial optimization problems.
Javanmard, Adel   +2 more
core   +1 more source

Robot‐Assisted Measurement of the Critical Micelle Concentration

open access: yesAdvanced Intelligent Systems, Volume 7, Issue 3, March 2025.
The study introduces (SIMO) smart integrator for manual operations, a robotic platform for precise, repeatable determination of (CMC) critical micelle concentration in surfactants. SIMO reduces standard deviation by 80% compared to manual methods. Surfactant, dye, and diluent selection, robotic protocols, and data handling are detailed.
Vincenzo Scamarcio   +3 more
wiley   +1 more source

Achieving Exact Cluster Recovery Threshold via Semidefinite Programming: Extensions

open access: yes, 2016
Resolving a conjecture of Abbe, Bandeira and Hall, the authors have recently shown that the semidefinite programming (SDP) relaxation of the maximum likelihood estimator achieves the sharp threshold for exactly recovering the community structure under ...
Hajek, Bruce, Wu, Yihong, Xu, Jiaming
core   +2 more sources

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