Results 141 to 150 of about 744,050 (371)

Computer-aided diagnosis of abnormal breasts in mammogram images by weighted-type fractional Fourier transform

Advances in Mechanical Engineering, 2016
Abnormal breast can be diagnosed using the digital mammography. Traditional manual interpretation method cannot yield high accuracy. In this study, we proposed a novel computer-aided diagnosis system for detecting abnormal breasts.
Yu-Dong Zhang, Shui-Hua Wang, Ge Liu, Jiquan Yang   +3 more
doaj   +1 more source

A mathematical survey on Fourier type integral transform and their offshoots: windowed Fourier transform, wavelet transform and Stockwell transform [PDF]

arXiv
This comprehensive review paper delves into the intricacies of advanced Fourier type integral transforms and their mathematical properties, with a particular focus on fractional Fourier transform (FrFT), linear canonical transform (LCT), quadratic phase Fourier transform (QPFT), and their associated offshoots: windowed Fourier transform, wavelet ...
arxiv  

A discrete fractional random transform [PDF]

Optics Communications, 225(4-6), Nov.15, 357-365(2005), 2006
We propose a discrete fractional random transform based on a generalization of the discrete fractional Fourier transform with an intrinsic randomness. Such discrete fractional random transform inheres excellent mathematical properties of the fractional Fourier transform along with some fantastic features of its own.
arxiv  

Perspective projections in the space-frequency plane and fractional Fourier transforms [PDF]

, 2000
İmam Şamil Yetik, Haldun M. Özaktaş, Billur Barshan, Levent Onural   +3 more
openalex   +1 more source

Native Lignin Migration and Clustering in Wood: Superhydrophobic, Antimold, and Tribonegative Layers for Rain‐Driven Electrification

Advanced Functional Materials, EarlyView.
This study proposes a sustainable solution for rainwater‐driven energy harvesting by harnessing the intrinsic properties of lignin in wood. The first demonstration of an all‐wood tribonegative material for liquid–solid triboelectric nanogenerators is presented, eliminating the need for fluorine‐containing polymers and functional additives. Abstract The
Xuetong Shi, Ran Bi, Xin Shu, Peipei Wang, Yeedo Chun, Zhixiang Chen, Chris Zhou, Yi Lu, Orlando J. Rojas   +8 more
wiley   +1 more source

Computation of fractional derivatives using Fourier transform and digital FIR differentiator [PDF]

, 2000
Chien–Cheng Tseng, Soo‐Chang Pei, Shih‐Chang Hsia   +2 more
openalex   +1 more source

Synthetic Strategy for mRNA Encapsulation and Gene Delivery with Nanoscale Metal‐Organic Frameworks

Advanced Functional Materials, EarlyView.
This research utilizes the ZIF‐8 for the encapsulation and intracellular delivery of nucleic acids, specifically mRNA, for applications in gene delivery. Integrating PEI addresses the issue of mRNA leakage from ZIF‐8, resulting in the delivery and expression of green fluorescent protein (GFP) in vitro and firefly luciferase in vivo.
Harrison Douglas Lawson, Huy Hoang Nguyen, Keng‐Jung Lee, Nattarat Wongsuwan, Ayesha Tupe, Mengrou Lu, Mariah Lynn Arral, Anne Behre, Zihan Ling, Kathryn Ann Whitehead, Adam Walter Feinberg, Xi Ren, Si‐Yang Zheng   +12 more
wiley   +1 more source

Stationarity of Stochastic Processes In The Fractional Fourier Domains [PDF]

arXiv, 2012
In this paper, we investigate the stationarity of stochastic processes in the fractional Fourier domains. We study the stationarity of a stochastic process after performing fractional Fourier transform (FRFT), and discrete fractional Fourier transform (DFRT) on both continuous and discrete stochastic processes, respectively.
arxiv  

Discrete Fourier Transforms of Fractional Processes [PDF]

Discrete Fourier transforms (dft's) of fractional processes are studied and an exact representation of the dft is given in terms of the component data. The new representation gives the frequency domain form of the model for a fractional process, and is ...
Peter C.B. Phillips
core  

Fractional Fourier transform in information optics [PDF]

, 2000
David Mendlovic, Zeev Zalevsky
openalex   +1 more source