Results 21 to 30 of about 175,759 (266)

Study on the external cavity laser frequency stabilization based on fuzzy PID control

上海师范大学学报. 自然科学版, 2019
A fuzzy proportion,integral,differential(PID) control algorithm was proposed for the external cavity laser to achieve better frequency stability.The Matlab stimulation results demonstrated that the fuzzy PID control algorithm performed more effectively ...
WANG Yang, WANG Yuhang, SU Ying, ZHANG Qian, CHENG Yuhao   +4 more
doaj   +1 more source

Transportable optical cavity systems for terrestrial and space-borne portable optical atomic clocks

Frontiers in Quantum Science and Technology
High finesse optical cavities have been the backbone of realizing narrow linewidth lasers to drive coherent excitations on dipole-forbidden transitions in atoms and ions for applications in atomic frequency standards.
Rishabh Pal, Vikrant Yadav, Arijit Sharma, Arijit Sharma   +3 more
doaj   +1 more source

Research on inertia characteristics and lifting strategy of grid-connected inverter

河南理工大学学报. 自然科学版
ObjectivesTo address the problem of low inertia operation in the power system caused by the integration of a large-scale new energy source，Methodsthe inertia characteristics of grid-connected inverters were analyzed and methods of improving their inertia
LI Jifang, HAN Aishan
doaj   +1 more source

Robust Frequency and Voltage Stability Control Strategy for Standalone AC/DC Hybrid Microgrid

Energies, 2017
The microgrid (MG) concept is attracting considerable attention as a solution to energy deficiencies, especially in remote areas, but the intermittent nature of renewable sources and varying loads cause many control problems and thereby affect the ...
Furqan Asghar, Muhammad Talha, Sung Ho Kim   +2 more
doaj   +1 more source

Carrier-envelope offset frequency measurement by means of an external optical resonator

Frontiers in Physics, 2023
A general-purpose method based on the implementation of the asymmetric Pound–Drever–Hall (PDH) technique is proposed to measure the carrier-envelope offset (CEO) frequency of a mode-locked laser using an external optical cavity.
Dario Giannotti, Dario Giannotti, Edoardo Suerra, Edoardo Suerra, Francesco Canella, Francesco Canella, Simone Cialdi, Simone Cialdi, Paolo Laporta, Paolo Laporta, Gianluca Galzerano, Gianluca Galzerano   +11 more
doaj   +1 more source

Intrinsic Temperature and Pressure Compensation of Thin-Film Acoustic Resonators

Applied Sciences
Stabilization of the resonance frequency in thin-film acoustic devices to variations in environmental conditions is commonly reduced to the passive or active compensation of a single factor (usually temperature) and the isolation or addition of a ...
Sergiu Cojocaru
doaj   +1 more source

Short-Term Frequency Response of a DFIG-Based Wind Turbine Generator for Rapid Frequency Stabilization

Energies, 2017
This paper proposes a short-term frequency-response scheme of a doubly-fed induction generator (DFIG)-based wind turbine generator (WTG) for improving rotor speed recovery and frequency nadir.
Dejian Yang, Moses Kang, Eduard Muljadi, Wenzhong Gao, Junhee Hong, Jaeseok Choi, Yong Cheol Kang   +6 more
doaj   +1 more source

Guidelines for Pediatric Radiotherapy Simulation: A Report From the Children's Oncology Group Radiation Oncology Discipline

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Pediatric radiation therapy presents unique challenges compared to adult treatments, including those of immobilization, potential need for sedation, and the critical importance of accurate, reproducible positioning. Additionally, heightened attention to imaging doses is necessary to minimize long‐term toxicity in survivors.
Parham Alaei, Stephen Mihalcik, Sujith Baliga, Young Kwok, Dana Casey, Eric Ehler, Christiane Burton, John C. Breneman, Daphne A. Haas‐Kogan, Suzanne L. Wolden, Arnold C. Paulino, Nadia N. Laack, Natia Esiashvili, Sarah Milgrom, Christine Hill‐Kayser, Thomas J. Fitzgerald, John A. Kalapurakal, Chia‐Ho Hua   +17 more
wiley   +1 more source

Slow light frequency reference cavities—proof of concept for reducing the frequency sensitivity due to length fluctuations

New Journal of Physics, 2022
Length changes due to thermo-mechanical noise originating from, for example, Brownian motion are a key limiting factor of present day state-of-the-art laser frequency stabilization using Fabry–Pérot cavities.
Sebastian P Horvath, Chunyan Shi, David Gustavsson, Andreas Walther, Adam Kinos, Stefan Kröll, Lars Rippe   +6 more
doaj   +1 more source

Association Between Dinutuximab Beta Exposure and Post‐End‐of‐Treatment Survival in Neuroblastoma: A Weighted Patient‐Level Analysis of Three Clinical Studies

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Objectives The association between exposure to dinutuximab beta (DB) and event‐free survival (EFS) or overall survival (OS) of neuroblastoma patients was assessed using data collected during three clinical trials (five cohorts). Methods A systematic review (March 2026) was conducted to identify relevant studies (prospective; registered DB ...
Przemysław Holko, Holger N. Lode, Alberto Garaventa, Carla Manzitti, Roberto Luksch, Dominique Valteau‐Couanet, Marion Gambart, John Anderson, Juliet Gray, Adela Canete, Lucas Moreno, Aleksandra Wieczorek, Cormac Owens, Shifra Ash, Isaac Yaniv, Genevieve Laureys, Hans Loibner, Katarzyna Śladowska, Ruth Ladenstein, Paweł Kawalec   +19 more
wiley   +1 more source