Results 1 to 10 of about 6,374 (186)

CFD Flow Analysis of the Influence of Rotor Seals in a Cantilever Microturbine [PDF]

open access: yesMATEC Web of Conferences, 2022
The article describes the results from the research and development of a cantilever microturbine designed for ORC power plants. The main objective of the paper was to compare different types of rotor seals and their effect on the turbine efficiency and ...
Syka Tomáš   +2 more
doaj   +1 more source

Smartphones with UWB: Evaluating the Accuracy and Reliability of UWB Ranging

open access: yesCoRR, 2023
More and more consumer devices implement the IEEE Ultra-Wide Band (UWB) standard to perform distance measurements for sensitive tasks such as keyless entry and startup of modern cars, to find lost items using coin-sized trackers, and for smart payments.
Alexander Heinrich   +3 more
openaire   +2 more sources

A Novel Compact Ultra-Wideband Frequency-Selective Surface-Based Antenna for Gain Enhancement Applications [PDF]

open access: yesJournal of Electromagnetic Engineering and Science, 2023
This article presents a compact ultra-wideband (UWB) circular monopole antenna with a frequency-selective surface (FSS) for gain enhancement. The proposed antenna has a circular patch with circular cuts at the edges and is excited by a microstrip feed ...
Iftikhar Ud Din   +6 more
doaj   +1 more source

Digital Twin Model of Electric Drives Empowered by EKF

open access: yesSensors, 2023
Digital twins, a product of new-generation information technology development, allows the physical world to be transformed into a virtual digital space and provide technical support for creating a Metaverse.
Mohsen Ebadpour   +4 more
doaj   +1 more source

Myślenie według świata wartości

open access: yesBiografistyka Pedagogiczna, 2021
Tytuł opracowania nawiązuje do tytułu szkiców filozoficznych Myślenia według wartości autorstwa ks. Józefa  Tischnera. Przestrzeń (w) dialogu pedagogów serca – to ukazanie osobowych doświadczeń i dwóch perspektyw zaangażowania (działania) na rzecz ...
Halina Monika Wróblewska
doaj   +1 more source

The Role of Russian Army Cartographers during the Great Northern War – the Example of the Campaign of Grodno of 1706

open access: yesKlio, 2021
This aim of this article is to analyse the role of cartography in operation activities during the Great Northern War. So far, only Swedish materials from that period have been studied, and this work concerns two maps made for the needs of the Russian ...
Karol Łopatecki
doaj   +1 more source

Pretreatment to terahertz absorption curves by narrow undulation constraint and Its quick implementation suggested by convex hull

open access: yesScientific Reports, 2022
In this work, a method of pretreating THz absorption curve is proposed, which leads to minimal range in absorption, reserving necessary undulation of curve for identification by convolutional neural network. The kernel thought of proposed method is about
Yizhang Li   +5 more
doaj   +1 more source

To Estimate Performance of Artificial Neural Network Model Based on Terahertz Spectrum: Gelatin Identification as an Example

open access: yesFrontiers in Nutrition, 2022
It is a necessity to determine significant food or traditional Chinese medicine (TCM) with low cost, which is more likely to achieve high accurate identification by THz-TDS.
Yizhang Li   +8 more
doaj   +1 more source

High Versatility of Niobium Alloyed AHSS

open access: yesArchives of Metallurgy and Materials, 2017
The effect of processing parameters on the final microstructure and properties of advanced high strength CMnSiNb steel was investigated. Several processing strategies with various numbers of deformation steps and various cooling schedules were carried ...
Kučerová L.   +3 more
doaj   +1 more source

Synchronization algorithms for UWB signals [PDF]

open access: yesIEEE Transactions on Communications, 2006
This paper is concerned with timing recovery for ultra-wideband communication systems operating in a dense multipath environment. Two timing algorithms are proposed that exploit the samples of the received signal to estimate the start of the individual frames with respect to the receiver's clock (frame timing) and the location of the first frame in ...
C. CARBONELLI, MENGALI, UMBERTO
openaire   +2 more sources

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