Results 91 to 100 of about 1,303 (282)

Dual Pathways of Loneliness in the Marketplace: Emotional Attachment, Empowerment, and Evaluations of Brand Warmth and Brand Competence

open access: yesPsychology &Marketing, EarlyView.
ABSTRACT Loneliness shapes consumer behavior, yet whether it increases preference for warm or competent brands remains unresolved. We argue that this question cannot be answered without distinguishing who is perceived to be lonely. Individual loneliness, which is a person's subjective experience of social disconnection, activates agency‐restoration ...
Aulona Ulqinaku   +2 more
wiley   +1 more source

Development of a Novel Commutation Method which Drastically Suppresses Commutation Failure of a Matrix Converter

open access: yesIEEJ Transactions on Industry Applications, 2007
This paper proposes the safest novel commutation method for a matrix converter. There are two conventional commutation methods which depend on the polarity of the input line voltage (it is called “voltage commutation”) and depend on the polarity of the output current (it is called “current commutation”).
Kato, Koji, Itoh, Jun-ichi
openaire   +2 more sources

Adaptive VDCOL control strategy for the recovery of the UHVDC SPC system

open access: yesThe Journal of Engineering, 2019
The separating pole connection (SPC) mode of ultra-high-voltage direct current (UHVDC) can significantly improve the power stability, but when the AC bus of one pole is failed and two receiving systems are near, it may cause subsequent commutation ...
Shujun Yao   +3 more
doaj   +1 more source

Improvement of Commutation Failure Prediction in HVDC Classic Links

open access: yes, 2011
In this thesis, an evaluation of the existing control system for ABB: s HVDC Classic Links is performed in order to investigate whether a possible improvement to commutation failure prediction is possible and to be recommended.
Ivarsson, Johanna
core  

Improving Affordability and Accessibility for Socially‐Beneficial Services via Government Incentives

open access: yesNaval Research Logistics (NRL), EarlyView.
ABSTRACT Many socially‐beneficial services, like dental care, suffer from a dual challenge: Low affordability for citizens and long waiting times due to insufficient provider capacity. We model a government's problem of designing subsidy policies to address this issue.
Xiaoyan Zhao, Venus Lo, Stephen Shum
wiley   +1 more source

Hybrid HVDC for integrating wind farms with special consideration on commutation failure

open access: yes, 2015
This paper presents the control and operation of a hybrid HVDC system comprising a wind farm side VSC rectifier and a grid side LCC inverter for integrating wind power.
Xu, Lie   +4 more
core   +1 more source

Area‐restricted search under realistic constraints

open access: yesOikos, 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

Actuation Strategies for Underwater Jet‐Propelled Soft Robots

open access: yesJournal of Field Robotics, EarlyView.
ABSTRACT This review article examines jet‐propulsion mechanisms in underwater soft robotic systems, focusing exclusively on physically fabricated and experimentally validated robots. Covering research published from 2013 to 2025, this study classifies and evaluates jet‐propulsion robots based on their actuation mechanisms.
Angel Kitone   +3 more
wiley   +1 more source

Analysis of Transient Voltage-Frequency Dynamic Coupling Mechanism of High-Proportion Renewable Energy Sending End System Under Commutation Failure Faults [PDF]

open access: yesDianli jianshe
[Objective] Aiming at the new challenge of unclear transient voltage and system frequency operation risks faced by sending-end power systems with a high proportion of renewable energy after commutation failure, this paper reveals the dynamic coupling ...
GAO Shang, YIN Chunya, LIU Wan, LI Xiaozhu, HAN Lu, ZHANG Gaohang
doaj   +1 more source

Who Does Bogotá “Care” for? Care Blocks, Care Workers and the Sustainable Development Goals

open access: yesSustainable Development, EarlyView.
ABSTRACT This paper critically examines Bogotá's District Care System within the framework of urban social sustainability and the Sustainable Development Goals (SDGs). Focusing on the Care Blocks (Manzanas del Cuidado), it employs a mixed‐methods approach—legal analysis, interviews, testimonies, surveys, and InfoCuidado data—to explore the paradox of a
Valentina Montoya‐Robledo   +1 more
wiley   +1 more source

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