Results 121 to 130 of about 463,737 (318)
Al-Mustansiriyah Journal of ScienceBackground: In many studies, spectral methods based on one of the orthogonal polynomials and weighted residual methods (WRMs) have been used to convert the variable-order fractional differential equation (VO-FDEs) into a system of linear or nonlinear ...
Abdulrazzaq T. Abed +1 more
doaj +1 more source
Low Complexity WMMSE Power Allocation In NOMA-FD Systems
, 2019 In this paper we study the problem of power and channel allocation with the objective of maximizing the system sum-rate for multicarrier non-orthogonal multiple access (NOMA) full duplex (FD) systems.
Abrardo, Andrea +3 more
core
Christoffel functions and orthogonal polynomials for Erd¨os weights on (–∞,∞)
Rendiconti di Matematica e delle Sue Applicazioni, 1994 We establish bounds on orthonormal polynomials and Christoffel functions associated with weights on IR of the form W2 = e−2Q, where Q : IR → IR is even, and is of faster than polynomial growth at ∞ (so-called Erd¨os weights). Typical examples are Q(x) := expk |x| α1, α > 1, , where expk = expk (exp (...
A.L. LEVIN, D.S. LUBINSKY, T.Z. MTHEMBU
openaire +1 more source
Advanced Materials, EarlyView.Triply‐twinned architected lattices transform deformation from bending to stretching of struts, delivering up to threefold increases in stiffness and strength across polymeric and metallic systems. High‐resolution synchrotron XCT and image‐based simulations reveal how meta‐grain architecture, defects, and AM build orientation govern failure pathways ...
David McArthur +7 more
wiley +1 more source
Applied SciencesThe stability of absolute gravimeters during carriage-falling body separation is crucial for improving gravitational acceleration measurement accuracy.
Lu Guo +7 more
doaj +1 more source
Advanced Materials, EarlyView.We introduce a molecular strategy to assemble one‐dimensional (1D) materials into two‐dimensional (2D) van der Waals metal–organic frameworks (MOFs). Crystals of [FeX(pzX)(bpy)] (X = Cl, F) form anisotropic 2D layers that can be mechanically exfoliated into thin sheets.
Eleni C. Mazarakioti +12 more
wiley +1 more source
Advanced Materials, EarlyView.Magnetic tunnel junctions (MTJs) using MgO tunnel barriers face challenges of high resistance‐area product and low tunnel magnetoresistance (TMR). To discover alternative materials, Literature Enhanced Ab initio Discovery (LEAD) is developed. The LEAD‐predicted materials are theoretically evaluated, showing that MTJs with dusting of ScN or TiN on ...
Sabiq Islam +6 more
wiley +1 more source
Yantu gongcheng xuebaoThe material point method (MPM) has good effects in simulating large deformation problems. However, the conventional MPM suffers from cell-crossing errors when particles cross grid boundaries, resulting in reduced accuracy.
WANG Manling 1, 2, LI Shuchen 1, 2, 3, ZHOU Huiying 1, 2, WANG Xiuwei 1, 2, PENG Kefeng 1, 2, YUAN Chao 2, 4
doaj +1 more source
EURASIP Journal on Wireless Communications and Networking, 2010 We consider a multiuser downlink transmission from a base station with multiple antennas (MIMO) to mobile terminals (users) with a single antenna, using orthogonal frequency division multiplexing (OFDM). Channel conditions are reported by a feedback from
Ermanna Conte +2 more
doaj +1 more source
Assembling a True “Olympic Gel” From over 16 000 Combinatorial DNA Rings
Advanced Materials, EarlyView.Olympic gels are an elusive class of soft matter, consisting of molecular networks held together purely by mechanically interlocked rings. Their topological structure promises unique properties and functions, but their synthesis has proven notoriously difficult.
Sarah K. Speed +9 more
wiley +1 more source