Results 171 to 180 of about 714,041 (272)

Investigation of Thermo‐Chemical Processes in Commercial MgO‐C Refractory Bricks With and Without MgO‐C Recyclate at Elevated Temperatures

Advanced Engineering Materials, EarlyView.
This study investigates thermo‐chemical processes during high‐temperature testing of two commercial MgO‐C brick grades, one containing 47.5 wt.% MgO‐C recyclate. Using ETV, DTA/TG‐MS, XRD, and SEM/EDS/EBSD, mechanisms such as carbothermal reduction of magnesia, impurity incorporation into the secondary MgO surface layer, and calcium‐rich phase ...
Alexander Schramm, Jana Hubálková, Christian Schimpf, Thomas Schemmel, Christos G. Aneziris, Anja Weidner, Horst Biermann   +6 more
wiley   +1 more source

On the Error Metrics Used for Direction of Arrival Estimation. [PDF]

Sensors (Basel)
Hannan MA, Crisafulli O, Giammello G, Sorbello G.   +3 more
europepmc   +1 more source

A Covariance Matrix Reconstruction Approach for Single Snapshot Direction of Arrival Estimation. [PDF]

Sensors (Basel), 2022
Muhammad M, Li M, Abbasi Q, Goh C, Imran MA.   +4 more
europepmc   +1 more source

Amplitude only direction of arrival estimation

In this manuscript, we present a novel hardware concept for the estimation of the direction of arrival of electro-magnetic signals. An arrangement of two patch antenna arrays, tilted with respect to each other, is used to create a monotonic relationship between the DoA and the received power difference between both arrays.
MacHado, Gabriel G., Islam, Kd M. Raziul, Fusco, Vincent; id_orcid 0000-0002-4041-4027, Abbasi, M. Ali Babar; id_orcid 0000-0002-1283-4614   +3 more
openaire   +1 more source

Combined Process‐ and Phase‐Field‐Simulation to Predict the Microstructure of Single‐Crystal Ni‐Based Superalloys

Advanced Engineering Materials, EarlyView.
A combined finite element and phase‐field approach predicts the evolution of microstructure during the directional solidification of Ni‐based superalloys. The model reveals how withdrawal rate, temperature gradient, and wall thickness control the dendrite spacing, highlighting the strong effect of surface regions in thin sections where dendrite growth ...
Sean Böhm, André B. Baldissera, Rainer Völkl, Uwe Glatzel   +3 more
wiley   +1 more source

Small Aperture Antenna Arrays for Direction of Arrival Estimation. [PDF]

Sensors (Basel)
Mehta KJ, Gupta IJ.
europepmc   +1 more source

Computationally Efficient Direction-of-Arrival Estimation Algorithms for a Cubic Coprime Array. [PDF]

Sensors (Basel), 2021
Gong P, Chen X.
europepmc   +1 more source

Influence of an Oxygen‐Free Atmosphere on Diamond‐Single‐Grain Scratching of Ti–6Al–4V

Advanced Engineering Materials, EarlyView.
Single‐grain scratching of Ti–6Al–4V is investigated under controlled, oxygen‐free, and ambient atmospheres using a novel experimental setup with in situ high‐speed imaging. The approach enables direct observation of chip formation and adhesion under suppressed oxidation.
Berend Denkena, Benjamin Bergmann, Michael Zenger   +2 more
wiley   +1 more source

Enhancing Direction-of-Arrival Estimation with Multi-Task Learning. [PDF]

Sensors (Basel)
Bianco S, Celona L, Crotti P, Napoletano P, Petraglia G, Vinetti P.   +5 more
europepmc   +1 more source

Research on Direction of Arrival Estimation Based on Self-Contained MEMS Vector Hydrophone. [PDF]

Micromachines (Basel), 2022
Zhu S, Zhang G, Wu D, Liang X, Zhang Y, Lv T, Liu Y, Chen P, Zhang W.   +8 more
europepmc   +1 more source