Results 41 to 50 of about 13,367,432 (261)

Constant modulus algorithm for blind equalization under impulsive noise environments

open access: yesTongxin xuebao, 2009
The presence of α stable distributed ambient channel noise in wireless systems can degrade the per-formance of existing constamt modulus(CM) equalizers.The problem of blind equalization in noisy communication channels was investigated by addressing the ...
GUO Ying1   +3 more
doaj   +2 more sources

Recommendation of Suitable Loading Waveforms and Wavelength Equations for Dynamic Modulus Based on Measured Wheel Loads

open access: yesAdvances in Materials Science and Engineering, 2019
Dynamic modulus is a key parameter in the pavement structure design and analysis. A haversine loading waveform is the most widely recommended waveform in the laboratory to obtain the dynamic modulus of asphalt mixtures by test protocols, which may not ...
Xiongwei Dai, Xiaodi Hu, Ying Gao
doaj   +1 more source

Superlubricity and Corrosion Inhibition Properties of Solvate Ionic Liquids in Hybrid Carbon Fiber Reinforced Plastic–Steel Interfaces

open access: yesAdvanced Engineering Materials, EarlyView.
Solvate ionic liquids lubrication reduced the coefficient of friction by ∼60% compared to dry sliding, reaching steady‐state values as low as 0.04–0.05. Corrosion weight‐loss measurements in 1 M HCl further demonstrated significant inhibition behavior, with only 100 ppm of [Li(G3)][TFSI] (∼68.5 μL/L) reducing corrosion‐product weight loss by 63 ...
Sameh Dabees   +6 more
wiley   +1 more source

Joint CFO Estimation and Symbol Detection for Embedded Pilot in MIMO-OFDM

open access: yesIEEE Open Journal of the Communications Society
This work introduces a novel source separation and Carrier Frequency Offset (CFO) estimation method based on a semi-blind multi-modulus approach with embedded pilots for Multiple-Input Multiple-Output Orthogonal Frequency Division Multiplexing (MIMO-OFDM)
Kabiru Nasiru Aliyu   +3 more
doaj   +1 more source

Online Tuning Strategy for Multi-loop SISO PI Control Algorithms in Multivariable Interactive Systems

open access: yesJournal of King Saud University: Engineering Sciences, 2002
Tuning of PI control algorithms for coupled multi input multi output (MIMO) systems is a challenging problem. This paper extends a previously developed model-based adaptive tuning method to handle the tuning problem of coupled multivariable systems.
Emad M. Ali
doaj   +1 more source

Investigating the Effect of Inclination Angle and the Influence of Scan Parameters on the Appearance and Thermal and Mechanical Properties of Filigree Tension Rods of LPBF‐Manufactured NiTi Shape‐Memory Alloys

open access: yesAdvanced Engineering Materials, EarlyView.
This article investigates the dependence of the properties on the manufacturing orientation in the form of the inclination angle to the build plate of LPBF‐fabricated NiTi rods with a diameter of 150–220 µm. Metallographic, chemical, thermal, and mechanical characterization show behavior under identical manufacturing conditions that ranges from ...
Sandra Herzig   +2 more
wiley   +1 more source

On the issue of studying the structural and mechanical characteristics of bovine cancellous bone [PDF]

open access: yesИзвестия Саратовского университета. Новая серия: Математика. Механика. Информатика
Mechanical experiments with human bones are difficult, so many authors study mechanical parameters of bovine cancellous bone, which is close to human bone in its properties.
Parshina, Irina F.   +5 more
doaj   +1 more source

Adaptive Foam 3D Printing of Ultralight and Multifunctional Materials

open access: yesAdvanced Engineering Materials, EarlyView.
Adaptive foam 3D printing, enabled by expandable microspheres, imparts cellular structures to thermoplastic and thermosetting polymers, manufactured through a variety of processes including fused filament fabrication, direct ink writing, digital light processing, and inkjet printing.
Nariman Rajabifar, Amir Ameli
wiley   +1 more source

An improved method for estimating in situ stress in an elastic rock mass and its engineering application

open access: yesOpen Geosciences, 2016
The main contribution of this paper is to develop a method to determine the in situ stress on an engineering scale by modifying the elasto-static thermal stress model (Sheorey’s model). The suggested method, firstly, introduces correction factors for the
Pei Qitao   +5 more
doaj   +1 more source

Design of a Multistable Finger Prosthesis with Programmable Metamaterials

open access: yesAdvanced Engineering Materials, EarlyView.
This research article shows the development of a multistable programmble metamaterial for the use as a finger prosthesis. The material was designed on different hierarchical levels where the influence of geometrical parameters and combination of mechanical elements was explored.
Franziska Wenz   +5 more
wiley   +1 more source

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