Results 31 to 40 of about 29,705,142 (291)

The Application of Frequency Offset Advantage (FOA) in Frequency Coordination

, 1979
International Telemetering Conference Proceedings / November 19-21, 1979 / Town and Country Hotel, San Diego, CaliforniaA major telecommunications growth area at this time is narrowband digital transmissions via satellites.
Raghavan, Srini, Armes, Jerry
core   +4 more sources

Time-Frequency Analysis of Systems with Changing Dynamic Properties [PDF]

, 2006
The Wigner-Ville Distribution, and related refinements, represent a class of advanced time-frequency analysis tools that are distinguished from Fourier and wavelet methods by an increase in resolution in the time frequency plane. Time-frequency analysis
Bradford, Samuel Case, V, Bradford, Samuel Case   +1 more
core   +1 more source

On the treatment of connecting conditions and the choice of admissible functions in energy method to investigate band gap characteristics of periodic beams

Mechanical Engineering Journal
Periodic structures are known to have specific frequency ranges called band gaps, where the transmission of elastic waves is suppressed. Research on band gap formation in mechanical structures has recently gained considerable attention, and there is a ...
Yuta KONNO, Takahiro TOMIOKA
doaj   +1 more source

Review of primary frequency control requirements on the GB power system against a background of increasing renewable generation [PDF]

, 2006
This thesis was submitted for the degree of Doctor of Engineering and awarded by Brunel University.The system frequency of a synchronous power system varies with the imbalance of energy supplied and the electrical energy consumed.
Pearmine, Ross
core   +9 more sources

Hybrid k-means-PSO Technique for Transformer Insulation Moisture Determination in the Production Stage Based on Frequency Response Analysis

Iranian Journal of Electrical and Electronic Engineering, 2022
Moisture in the transformer insulation can shorten its life. There are many methods for detecting humidity in transformer paper insulation. One of the methods used in the factory to evaluate the drying process of transformer insulation and determine its ...
M. Bigdeli
doaj  

Online High Frequency Impedance Identification Method of Inverter-Fed Electrical Machines for Stator Health Monitoring

Applied Sciences
In electric powertrain traction applications, the adopted trend to improve the performance and efficiency of electromechanical power conversion systems is to increase supply voltages and inverter switching frequencies.
Jérémy Creux, Najla Haje Obeid, Thierry Boileau, Farid Meibody-Tabar   +3 more
doaj   +1 more source

Ovarian Sex Cord Stromal Tumors in Children and Adolescents—The European Standard Clinical Practice Recommendations

Pediatric Blood &Cancer, EarlyView.
ABSTRACT As part of the European Cooperative Study Group for Paediatric Rare Tumours initiative, we developed standard clinical practice guidelines for ovarian sex cord stromal tumors, based on comprehensive national and international cohort analyses, literature review, and a final expert consensus conference.
Dominik T. Schneider, Kris‐Ann Schultz, Nora Schnitzler, Michael Abele, Tal Ben‐Ami, Ewa Bien, Gianni Bisogno, Ines B. Brecht, Maja Cesen, Andrea Ferrari, Michaela Kuhlen, Malgorzata A. Krawczyk, Ricardo Lopez‐Almaraz, Yves Reguerre, Calogero Virgone, Daniel Orbach   +15 more
wiley   +1 more source

The validation of an aerospace structure through the sine vibration analysis [PDF]

INCAS Bulletin, 2018
Sinusoidal vibrations represent an ideal case. Technically, it is quite hard to generate pure sinusoidal vibrations without containing other spectral components, called harmonics.
Cristina-Diana BRATU, Ionut-Cosmin ONCESCU, Ion DIMA, Alexandra Raluca PETRE   +3 more
doaj   +1 more source

Evidence‐Informed Multidisciplinary Consensus Guidance for the Psychosocial Care of Adolescents With High‐Risk Cancer: Recommendations From the Italian Association of Pediatric Hematology and Oncology

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Adolescents with high‐risk cancer face complex developmental, psychosocial, and ethical challenges that extend beyond disease‐directed treatment. Although international recommendations exist for communication, psychosocial care, pediatric palliative care, survivorship, and shared decision‐making, these have largely evolved within ...
Johanna M. C. Blom, Dorella Scarponi, Giulia Zucchetti, Teresa Perillo, Maria Montanaro, Elisa Marconi, Chiara Rutigliano, Paolo Colavero, Paola Quarello, Marina Bertolotti, Monica Cellini, Carlo Clerici, Maurizio Mascarin, Francesca Bomben, Andrea Ferrari, the expert workgroup   +15 more
wiley   +1 more source

Design Improvement of a Semi-submersible Floating Offshore Wind Turbines through Frequency-domain Load Analyses

한국해양공학회지
The purpose of this study is to analyze the differences in motion response performances according to the design variables of semi-submersible substructures supporting floating offshore wind turbines (FOWTs) and propose an improved design.
Soo Bin Lee, Joonmo Choung
doaj   +1 more source