Results 161 to 170 of about 3,320 (281)

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  

Comparative study of wavelet transform and Fourier domain filtering for medical image denoising. [PDF]

Sci Rep
Saif MA, Mughalles BM, Loqman IGH.
europepmc   +1 more source

Keggin‐Type Aluminum Polyoxometalate‐Mediated Oxidation of Amorphous Carbon for Engineered Electrochemical Interfaces

Carbon Energy, EarlyView.
Keggin‐type Al‐POM‐coated silica achieves selective surface oxidation of amorphous carbon through electrostatic attraction and proton‐coupled oxidation, tailoring interfacial properties for lithium‐ion batteries and semiconductor processes. ABSTRACT Amorphous carbon is widely used in energy storage and semiconductor technologies, where surface ...
Ganggyu Lee, Dongmin Kang, Sumin Hong, Hongjun Park, Myungju Woo, Woojin Jeong, Giha Lee, Junsang Lee, Sangkyun Kim, Jea‐Gun Park, Takamasa Mori, Yehwan Kim, Taeseup Song, Ungyu Paik   +13 more
wiley   +1 more source

Iterative Amplitude Equalization for Frequency Estimation (IAE-DFT). [PDF]

Sensors (Basel)
Serea E, Donciu C, Temneanu MC.
europepmc   +1 more source

Engineering Mechanically Adaptive Nanonetworks for Long‐Life and High‐Capacity Silicon Anode Batteries

Carbon Energy, EarlyView.
ABSTRACT Silicon anodes, with a theoretical capacity of ~ $\unicode{x0007E}$3860 mAh g−1, offer more than ten times the lithium storage of graphite but suffer from large volume expansion during lithiation, leading to particle fracture, electrical disconnection, and unstable solid–electrolyte interphases (SEIs).
Yangyul Ju, Yeeun Song, Youngho Han, Yoong Ahm Kim, Mohamed S. Abdelgawad, Amy Q. Shen, Doojin Lee   +6 more
wiley   +1 more source

A model-based image fusion framework using discrete band-limited shearlets. [PDF]

Sci Rep
Ji W, Chen X.
europepmc   +1 more source

Mass Production of Waste PVC‐Mediated Bamboo‐Derived Hard Carbon for Ultra‐Long Life Sodium Storage

Carbon Energy, EarlyView.
By a scalable PVC‐mediated bifunctional strategy, pre‐carbonized micrometer bamboo powder is converted into a functionally partitioned hard carbon anode with distinct domains. Featuring abundant internal closed pores and surface sp2‐enriched graphitic regions, this anode delivers exceptional high‐rate long‐cycle stability, retaining 93% capacity after ...
Wenjing Xu, Zhangliu Tian, Meng Wang, Song Liang, Yueyang Wang, YuSha Gao, Yinjie Wan, Ce Zhou, Yue Tan, Le Wu, Fuqiang Huang   +10 more
wiley   +1 more source

Security-Aware Codebook Design for Low-PAPR AFDM Systems. [PDF]

Sensors (Basel)
Zhang T, Dai H.
europepmc   +1 more source

Deciphering Polarity Effects of Polymer to Regulate Li+ Ionic Environment in Solid Polymer Electrolytes for Solid‐State Lithium Batteries

Carbon Energy, EarlyView.
We elucidate the fundamental influences of polymer polarity on Li+ ionic environments in solid polymer electrolytes by considering four critical components: Li+, FSI−, residual solvents, and polymer matrix. Beyond facilitating LiFSI dissociation and Li+ transport, our findings underscore previously overlooked roles of polymer polarity, thereby ...
Ji‐Oh Kim, Taekyun Kwon, Hyeonchul So, Seungjo Hong, Hansol Lee, Jusung Han, Sung Hyun Kwon, Jin Hong Lee   +7 more
wiley   +1 more source

Emergent discrete space-time crystal of Majorana-like quasiparticles in chiral liquid crystals. [PDF]

Nat Commun
Zhao H, Zhang R, Smalyukh II.
europepmc   +1 more source