Results 51 to 60 of about 720,720 (308)

Fundamental Challenges, Physical Implementations, and Integration Strategies for Ising Machines in Large‐Scale Optimization Tasks

open access: yesAdvanced Electronic Materials, EarlyView.
Ising machines are emerging as specialized hardware solvers for computationally hard optimization problems. This review examines five major platforms—digital CMOS, analog CMOS, emerging devices, coherent optics, and quantum systems—highlighting physics‐rooted advantages and shared bottlenecks in scalability and connectivity.
Hyunjun Lee, Joon Pyo Kim, Sanghyeon Kim
wiley   +1 more source

Design of multivariable feedback control systems via spectral assignment using reduced-order models and reduced-order observers [PDF]

open access: yes
The feasibility of using reduced order models and reduced order observers with eigenvalue/eigenvector assignment procedures is investigated. A review of spectral assignment synthesis procedures is presented.
Carraway, P. I., III   +2 more
core   +4 more sources

Eigenvalue/eigenvector assignment using output feedback [PDF]

open access: yesIEEE Transactions on Automatic Control, 1978
The problem of pole-assignment in a linear time-invariant multivariable system using output feedback is considered. New sufficient conditions are derived to assign an almost arbitrary set of min (n,m+r- 1) distinct eigenvalues, where n, m , and r are the number of states, inputs, and outputs, respectively.
openaire   +1 more source

Characterizing CDMA downlink feasibility via effective interference [PDF]

open access: yes, 2003
This paper models and analyses downlink power assignment feasibility in Code Division Multiple Access (CDMA) mobile networks. By discretizing the area into small segments, the power requirements are characterized via a matrix representation that ...
A. I. Endrayanto   +6 more
core   +2 more sources

Analysis and Design of Complex-Valued Linear Systems

open access: yes, 2018
This paper studies a class of complex-valued linear systems whose state evolution dependents on both the state vector and its conjugate. The complex-valued linear system comes from linear dynamical quantum control theory and is also encountered when a ...
Zhou, Bin
core   +1 more source

Operando X‐Ray Diffraction and Total Scattering Characterization of Battery Materials: Not Just a Pretty Picture

open access: yesAdvanced Energy Materials, EarlyView.
This review focuses on operando studies of battery materials by X‐ray diffraction (XRD) and total X‐ray scattering (TXS). This work highlights potential pitfalls and identify best‐practices for operando studies and reviews some unusual experiments to illustrate how these methods can be applied beyond the evaluation of the early‐stage cycling mechanisms
Amalie Skurtveit   +5 more
wiley   +1 more source

Oscillatory localization and impedance-coordinated method for multi-converter power systems based on the impedance network matrix

open access: yesInternational Journal of Electrical Power & Energy Systems
The Bus participation factor (PF) has been identified as an effective method for identifying the power converters and buses contributing significantly to harmonic instability. However, the PF depends on the system’s eigenvalue calculations, which require
Donghui Zhang, Xin Chen, Fan Yang
doaj   +1 more source

The 2-local Hamiltonian problem encompasses NP [PDF]

open access: yes, 2003
We show that the NP complete problems MAX CUT and INDEPENDENT SET can be formulated as the 2-local Hamiltonian problem as defined by Kitaev. He introduced the quantum complexity class BQNP as the quantum analog of NP, and showed that the 5-local ...
Beth, Thomas, Wocjan, Pawel
core   +2 more sources

Enhancing Sustainability Label Effectiveness Through Logo Design Modification: An Analysis of the EU Green Leaf Logo

open access: yesAgribusiness, EarlyView.
ABSTRACT Sustainability labels can help support consumers select more socially and environmentally friendly options, thereby enhancing returns for conscientious producers and promoting the transition to a more sustainable food system. However, consumer confusion regarding labels' meaning undermines their effectiveness.
Monika Hartmann   +4 more
wiley   +1 more source

Positivity in the presence of initial system-environment correlation [PDF]

open access: yes, 2012
The constraints imposed by the initial system-environment correlation can lead to nonpositive Dynamical maps. We find the conditions for positivity and complete positivity of such dynamical maps by using the concept of an assignment map.
A. Rivas   +8 more
core   +2 more sources

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