Results 91 to 100 of about 1,709,387 (277)

Theory of Supercritical Coupling and Generalized Bound States in the Continuum

Laser &Photonics Reviews, EarlyView.
We develop a general theory of supercritical coupling and generalized bound states in the continuum (gBICs), revealing how interference between radiative and absorptive channels enables quality factors beyond conventional material‐loss limits. The framework unifies non‐Hermitian mode coupling, causality‐driven reactive interactions, and interference ...
Sergio Balestrieri, Bruno Miranda, Silvia Romano, Gianluigi Zito   +3 more
wiley   +1 more source

HVDC transmission and commutation failure

, 2015
LAUREA MAGISTRALELa trasmissione ad alta tensione in corrente continua (HVDC) è largamente utilizzata nelle linee caratterizzate da lunghe distanze e da elevata potenza in transito, oltre che nei collegamenti tra diversi paesi, grazie ai suoi indubbi ...
HE, JIALIANG
core  

Markov‐Associated Quadratic Stochastic Families and the Susceptible‐Infected‐Recovered (SIR) Model

Mathematical Methods in the Applied Sciences, EarlyView.
ABSTRACT We introduce a Markov‐associated construction for quadratic stochastic families generated by a symmetric cubic stochastic matrix and a finite‐state homogeneous Markov semigroup. The constructed family is not assumed to be a classical quadratic stochastic process of type (A)$$ (A) $$ or type (B)$$ (B) $$; rather, it is a Markov‐associated ...
Taimun Qaisar, Farrukh Mukhamedov, Youssef El‐Khatib, Mahmoud Alhaj Hasan   +3 more
wiley   +1 more source

Coordinated Control for Operating Characteristics Improvement of UHVDC Transmission Systems under Hierarchical Connection Scheme with STATCOM

Energies, 2019
Ultra-high voltage direct current (UHVDC) systems under hierarchical connection schemes (HCSs) linked to AC grids with different voltage levels (500 and 1000 kV) have been a great concern for power utilities to transfer bulk power.
Atiq Ur Rehman, Chunyi Guo, Chengyong Zhao   +2 more
doaj   +1 more source

Area‐restricted search under realistic constraints

Oikos, EarlyView.
Abstract Area‐restricted search (ARS) is one of the most influential and widely used concepts in foraging theory, capturing a simple rule by which animals intensify local search following a resource encounter. Because ARS performs well in many spatially structured environments, it serves as a basic model for interpreting movement patterns across taxa ...
Inon Scharf, Arik Dorfman
wiley   +1 more source

Stabilising Routines in Complex Emergencies: How Basic Service Continuity Shapes Perceived Security

Public Administration and Development, EarlyView.
ABSTRACT This study examines how locally embedded actors describe the relationship between basic service continuity and perceived security in complex emergencies, with particular attention to the stabilisation of everyday routines. Using Proximity‐Predictability‐Attributability (PPA) as an analytic lens, we trace how interviewees relate access to water,
Abdullah Gökhan Yaşa, Orçun İmga
wiley   +1 more source

Prediction of First Commutation Failure and Dynamic Start-Up Threshold Tuning in LCC-HVDC Systems Considering Commutation-Voltage Phase Variation

Commutation failure is likely to occur when an AC fault occurs at the receiving end of an LCC-HVDC system. This threatens transient stability. Conventional commutation failure prevention (CFPREV) control mainly responds to commutation-voltage magnitude ...
Junpeng Ma, Hui Fang, Lumeng Luo, Qiang Li, Hongji Xiang   +4 more
core   +1 more source

Multi‐scale flow analysis for scale‐aware urban canopy models

Quarterly Journal of the Royal Meteorological Society, EarlyView.
We found that scale‐aware models are necessary when numerical weather prediction models approach hectometric resolution, which is associated with a characteristic length‐scale of morphological heterogeneity. This morphology‐dependent length‐scale indicates that resolved and unresolved heterogeneity are equally important.
Jingzi Huang, Maarten van Reeuwijk
wiley   +1 more source

Privacy‐Preserving Data‐Driven Distributed MPC for Heterogeneous Nonlinear Multi‐Agent Systems

International Journal of Robust and Nonlinear Control, EarlyView.
ABSTRACT Distributed model predictive control (DMPC) is a cornerstone for coordinating multi‐agent systems, yet simultaneously ensuring data privacy, handling unknown nonlinear dynamics, and managing heterogeneous constraints remains an open challenge.
Mahmood Mazare, Hossein Ramezani
wiley   +1 more source

Sustainable Business Models and Environmental Innovation Capacity: The Moderating Role of Board Effectiveness

Sustainable Development, EarlyView.
ABSTRACT Sustainable Business Models (SBMs) reflect the degree to which sustainability principles are embedded across firms' business model architectures. However, the mere adoption of these models does not guarantee improvements in environmental innovation capacity due to internal organizational inertia.
Emma García‐Meca, Jennifer Martínez‐Ferrero, Christian Nielsen   +2 more
wiley   +1 more source