Results 101 to 110 of about 99,259 (331)

Synchroextracting Transform Based on the Novel Short-Time Fractional Fourier Transform

Fractal and Fractional
As a generalization of the short-time Fourier transform (STFT), the novel short-time fractional Fourier transform (NSTFRFT) has been introduced recently.
Bei Li, Zhuosheng Zhang
doaj   +1 more source

SAR-Based Vibration Estimation Using the Discrete Fractional Fourier Transform [PDF]

, 2012
A vibration estimation method for synthetic aperture radar (SAR) is presented based on a novel application of the discrete fractional Fourier transform (DFRFT).
Atwood, Tom, Beach, Ryan J., Doerry, Armin W., Dunkel, Ralf, Gerstle, Walter, Hayat, Majeed M., Pepin, Matthew, Santhanam, Balu, Wang, Qi   +8 more
core   +1 more source

High‐Performance Field‐Effect Transistors and Phototransistors Array Based on Solution‐Processed Quasi‐1D Van der Waals Ta2Pd3S8 Crystals

Advanced Functional Materials, EarlyView.
Herein, the synthesis of Ta₂Pd₃S₈ nanowires is reported via scalable liquid cascade exfoliation and their integration into high‐mobility field‐effect transistors (FETs) and sensitive photodetectors, achieving carrier mobility of up to 27.3 cm2 V⁻¹ s⁻¹ and responsivities of 322.40 A W⁻¹ and 1.85 mA W⁻¹ for single nanowire and network devices ...
Kyung Hwan Choi, Bom Lee, Jinsu Kang, Byung Joo Jeong, Sooheon Cho, Sang Hoon Lee, Dahoon Kim, Yeong Hyeop Kim, Jongwha Chang, Hyung‐Suk Oh, Ji‐Hee Kim, Jae‐Hyun Lee, Hak Ki Yu, Jae‐Young Choi   +13 more
wiley   +1 more source

Functional Hydrogel for Modulating Lipid Droplets and Neuroinflammation in Head Injury

Advanced Functional Materials, EarlyView.
After TBI, elevated cholesterol levels in activated microglia lead to the accumulation of cholesterol esters in lipid droplets, exacerbating neuroinflammation. A β‐cyclodextrin‐conjugated GelMA (βCD‐GelMA) hydrogel is developed to promotes cholesterol efflux and reduces LDL influx, thereby alleviating intracellular cholesterol and lipid droplet buildup.
Feixiang Chen, Yvonne Shen, Yutong Shao, Tenghuan Ge, Haowen Qiao, Shangzhou Xia, Yafei Qu, Yuanpu Chiu, Ying Qin, Zhen Zhao   +9 more
wiley   +1 more source

Discussion on Weighted Fractional Fourier Transform and Its Extended Definitions

Fractal and Fractional
The weighted fractional Fourier transform (WFRFT) has always been considered a development of the discrete fractional Fourier transform (FRFT). This paper points out that the WFRFT is a discrete FRFT of eigenvalue decomposition, which will change the ...
Tieyu Zhao, Yingying Chi
doaj   +1 more source

Fractional Fourier transforms and their optical implementation II [PDF]

, 1993
Haldun M. Özaktaş, David Mendlovic
openalex   +1 more source

Local Whittle Estimation in Nonstationary and Unit Root Cases [PDF]

Asymptotic properties of the local Whittle estimator in the nonstationary case (d > 1/2) are explored. For 1/2 1 and when the process has a linear trend, the estimator is shown to be inconsistent and to converge in probability to unity.Discrete Fourier ...
Katsumi Shimotsu, Peter C.B. Phillips
core  

Ternary Synergy in Layered Double Hydroxides for Efficient and Stable Nitrate Reduction

Advanced Functional Materials, EarlyView.
Ternary CuZnFe LDH enables efficient electrocatalytic nitrate‐to‐ammonia conversion via controlled in situ reconstruction: zinc leaching creates porous active sites, copper reduced to metallic copper, while iron oxide keeps stable. Synergistic Cu‐Fe redox coupling drives tandem catalysis (nitrate→nitrite→NH3), achieving 95% Faraday efficiency and ...
Jiaqian Kang, Yuxuan Xiao, Lun Li, Lulu Qiao, Chunfa Liu, Chengcheng Zhong, Pengzhan Sun, Di Liu, Weng Fai Ip, Hui Pan   +9 more
wiley   +1 more source

An Efficient and Accurate Multi-Sensor IF Estimator Based on DOA Information and Order of Fractional Fourier Transform. [PDF]

Entropy (Basel), 2022
Khan NA, Ali S, Choi K.
europepmc   +1 more source

Fourier transforms of fractional order and their optical interpretation [PDF]

, 1993
Haldun M. Özaktaş, David Mendlovic
openalex   +1 more source