Results 31 to 40 of about 1,992,211 (291)
Alternating Optimization Based Hybrid Precoding Strategies for Millimeter Wave MIMO Systems
IEEE Access, 2020 In millimeter wave (mmWave) multiple-input multiple-output (MIMO) systems, the hybrid beamforming architecture has been put forward to reduce the high hardware cost and power consumption, which are resulted from the tremendous requirements of dedicated ...
Xu Qiao +3 more
doaj +1 more source
Membrane composition and thermodynamic identity as boundaries of life for synthetic cell research
FEBS Letters, EarlyView.What makes a cell a cell? The boundary of a living cell is not just a wall. Read as a Markov blanket, the membrane separates internal from external states, generating identity and non‐equilibrium order. Can this identity be rebuilt from scratch in a synthetic cell?
Caterina Presutti, Bert Poolman
wiley +1 more source
Performance Characteristics and Optimization of a Dual-Loop Cycle for a Domestic Refrigerator-Freezer [PDF]
, 2012 A dual-loop cycle for a domestic refrigerator-freezer (RF) has a large energy saving potential because of lower compression ratio due to higher evaporating temperature in the fresh food compartment (R)-operation, and the individual optimization ...
Yoon, Won Jae +2 more
core +1 more source
Artificial neural network optimisation of shielding gas flow rate in gas metal arc welding subjected to cross drafts when using alternating shielding gases [PDF]
, 2015 This study implemented an iterative experimental approach in order to determine the shielding gas flow required to produce high quality welds in the gas metal arc welding (GMAW) process with alternating shielding gases when subjected to varying ...
Ley, F.H. +3 more
core +4 more sources
Site-Specific Channel Modeling and Optimization of RIS-Assisted Multiuser MISO Systems
IEEE Open Journal of Antennas and PropagationThis paper presents a physics-based channel modeling and optimization framework for reconfigurable intelligent surface (RIS)-assisted downlink multi-user multiple-input single-output (MU-MISO) communication systems in site-specific environments. A hybrid
Ziqi Liu, Wei Yu, Sean Victor Hum
doaj +1 more source
Molecular Oncology, EarlyView.Arginine methylation can be viewed as a persistence‐prone post‐translational modification regulated by a network of PRMTs. Competitive and compensatory interactions among PRMTs can redistribute methylation across substrate pools shaped by sequence, structural, spatial, and environmental layers, reinforcing RNA‐processing, chromatin, and signaling ...
So Hyun Kwon, Ji Min Lee
wiley +1 more source
An alternative globalization strategy for unconstrained optimization [PDF]
Optimization, 2017 We propose a new globalization strategy that can be used in unconstrained optimization algorithms to support rapid convergence from remote starting points. Our approach is based on using multiple points at each iteration to build a representative model of the objective function.
Öztoprak, Figen, Birbil, Ş. İlker
openaire +3 more sources
Alternately Optimized Graph Neural Networks
CoRR, 2022 Graph Neural Networks (GNNs) have greatly advanced the semi-supervised node classification task on graphs. The majority of existing GNNs are trained in an end-to-end manner that can be viewed as tackling a bi-level optimization problem. This process is often inefficient in computation and memory usage.
Haoyu Han 0001 +6 more
openaire +3 more sources
A Consensus Approach to Distributed Convex Optimization in Multi-Agent Systems [PDF]
, 2013 In this thesis we address the problem of distributed unconstrained convex optimization under separability assumptions, i.e., the framework where a network of agents, each endowed with local private convex cost and subject to communication constraints ...
Filippo Zanella, Zanella, Filippo
core
IEEE Open Journal of the Communications SocietyReconfigurable intelligent surfaces (RISs) and six-dimensional movable antennas (6DMAs) have emerged as promising technologies for enhancing wireless transmission by reconfiguring the propagation environment and antenna geometry, respectively.
Yuewei Wu +7 more
doaj +1 more source