Results 101 to 110 of about 48,008 (296)

Sharp H p $H_{p}$ - L p $L_{p}$ type inequalities of weighted maximal operators of Vilenkin-Nörlund means and its applications

Journal of Inequalities and Applications, 2016
We prove and discuss some new H p $H_{p}$ - L p $L_{p}$ type inequalities of weighted maximal operators of Vilenkin-Nörlund means with monotone coefficients. It is also proved that these inequalities are the best possible in a special sense.
Lasha Baramidze, Lars-Erik Persson, George Tephnadze, Peter Wall   +3 more
doaj   +1 more source

Strong convergence of an inertial algorithm for maximal monotone inclusions with applications

Fixed Point Theory and Applications, 2020
An inertial iterative algorithm is proposed for approximating a solution of a maximal monotone inclusion in a uniformly convex and uniformly smooth real Banach space. The sequence generated by the algorithm is proved to converge strongly to a solution of
C. E. Chidume, A. Adamu, M. O. Nnakwe
doaj   +1 more source

Multi‐Functional ZnO–Te Heterojunction Devices Enabling Compact Frequency Quadrupler

Advanced Functional Materials, EarlyView.
Wafer‐scale ZnO–Te heterojunction devices featuring tunable double negative differential transconductance (D‐NDT) are demonstrated at ≤ 200°C. Leveraging this unique characteristic, a single‐stage frequency quadrupler is realized, achieving a 64%–75% reduction in device count.
Jae Hyeon Jun, Byeong Gwan Kim, Min Seo Kang, Ui Gwan Shin, Minjae Kim, Kiyung Kim, Hae‐Won Lee, Yongsu Lee, Byoung Hun Lee   +8 more
wiley   +1 more source

Revealing the Hidden Role of Cd in p‐Type Mg3Sb2: Enhanced Thermoelectric Performance by Grain Boundary Segregation Engineering

Advanced Functional Materials, EarlyView.
The hidden role of Cd segregation at grain boundaries is revealed in p‐type Mg3Sb2 by atom probe tomography and other advanced characterizations. Grain boundary Cd enrichment suppresses the SbMg+ hole‐killer formation and lowers potential barriers, enhancing electrical conductivity.
Zhou Li, Deming Dong, Xiaoyu Yang, Jun Qian, Mengruizhe Kong, Han Wan, Ni Ma, Wei Bai, Pengfei Nan, Binghui Ge, Jiming Song, G. Jeffrey Snyder, Yuan Yu   +12 more
wiley   +1 more source

A viscosity iterative technique for equilibrium and fixed point problems in a Hadamard space

Applied General Topology, 2019
The main purpose of this paper is to introduce a viscosity-type proximal point algorithm, comprising of a nonexpansive mapping and a finite sum of resolvent operators associated with monotone bifunctions. A strong convergence of the proposed algorithm to
C. Izuchukwu, K. O. Aremu, A. A. Mebawondu, O. T. Mewomo   +3 more
doaj   +1 more source

Lower Limits of Type (D) Monotone Operators in general Banach Spaces

, 2014
We give, for general Banach spaces, a characterization of the sequential lower limit of maximal monotone operators of type (D) and prove its representability. As a consequence, using a recent extension of the Moreau-Yosida regularization for type (D) operators, we extend to general Banach spaces the definitions of the variational sum of monotone ...
Bueno, Orestes, García, Yboon, Alves, Maicon Marques   +2 more
openaire   +3 more sources

Observation of Two‐Photon Resonant Raman Scattering via the Biexciton Level in Two‐Dimensional Halide Perovskite (C6H5C2H4NH3)2PbI4

Advanced Functional Materials, EarlyView.
Efficient two‐photon resonant Raman scattering (TRRS) is observed in the layered perovskite (PEA)2PbI4, with the biexciton level acting as an intermediate state. TRRS undergoes two‐photon frequency shift upon input frequency tuning, persists up to 90 K, and shows clear threshold behavior and polarization selection rules.
Seung Han Shin, Seo Hyun Nam, Jeehong Park, Dong Gyu Lee, Jeong Bin Cho, Tae Jung Kim, Yeonjin Yi, Joon Ik Jang   +7 more
wiley   +1 more source

A relaxed Picard iteration process for set-valued operators of the monotone type [PDF]

Proceedings of the American Mathematical Society, 1979
The fixed points x ¯ \bar x of set-valued operators, T : X → 2 X T:X \to {2^X} , satisfying a condition of the monotonicity type on convex subsets X of a Hilbert space are approximated by a relaxation ...
openaire   +2 more sources

Kinetic Regimes of Hydrogen Absorption in Thin Films

Advanced Functional Materials, EarlyView.
Knowledge of the hydrogen incorporation mechanisms in thin layers in relation to the amount absorbed is essential to design coatings and devices compatible with hydrogen‐based technologies. A combination of simultaneous in situ methods gives detailed insight into the hydrogenation of a prototypical hydrogen absorber layer in a time‐dependent manner ...
Laura Guasco, Sabine Pütter, Yury N. Khaydukov, Luca Silvi, Mariano A. Paulin, Attila Csik, Thomas Keller, Bernhard Keimer   +7 more
wiley   +1 more source

Unlocking Multi‐Valley Energy Pockets and Interface‐Induced Phonon Filtering in InSb Thermoelectrics by Reaction‐Driven Interface Engineering

Advanced Functional Materials, EarlyView.
InSb, a narrow‐bandgap semiconductor with high carrier mobility, is promising for thermoelectric energy conversion but suffers from high lattice thermal conductivity and strong bipolar conduction. Here, in situ interface engineering using Co2O3 nanoprecursors forms hierarchical CoSbx/In2O3/CoSb3 heterostructures that enhance phonon scattering and ...
Jiwu Xin, Xiao Yang, Xiao‐Lei Shi, Chengyun Xu, Xi Ling, Pengyu Zhang, Jinfeng Dong, Yong Du, Haisheng Chen, Ting Zhang, Zhi‐Gang Chen   +10 more
wiley   +1 more source