Results 81 to 90 of about 254,430 (319)

Intelligent Acousto‐Electrical Metamaterials (IAM) for Sound Source Detection

Advanced Materials, EarlyView.
Our proposed metamaterial concept enables sound source detection using a single material, in contrast to conventional arrays that require dozens or even hundreds of transducers. We show that the coupled acoustic–vibrational–electrical responses in piezoelectric metamaterials give rise to topology‐governed charge transport, producing distinct voltage ...
Victor Couëdel, Haotian Lu, Jiayan Zhang, Desheng Yao, Ananya Bhardwaj, Ramiro Contreras, Karim Sabra, Xiaoyu (Rayne) Zheng   +7 more
wiley   +1 more source

Unravelling the Secret of Sulfur Confinement and High Sulfur Utilization in Hybrid Sulfur‐Carbons

Advanced Materials, EarlyView.
Thermal condensation of inverse vulcanized sulfur‐carbon hybrids enables a bottom‐up sulfur confinement strategy, in which a protective carbon phase is progressively constructed around sulfur species. The resulting carbon nanodomains covalently tether sulfur chains and stabilize radical intermediates. This integrated architecture effectively suppresses
Tim Horner, Enis Oğuzhan Eren, Elif Begüm Yılmaz, Jiyong Kim, Ernesto Scoppola, Alexandros Vasileiadis, Nadezda V. Tarakina, Markus Antonietti, Paolo Giusto, Evgeny Senokos   +9 more
wiley   +1 more source

Wavelet Neural Network Model for Yield Spread Forecasting

Mathematics, 2017
In this study, a hybrid method based on coupling discrete wavelet transforms (DWTs) and artificial neural network (ANN) for yield spread forecasting is proposed.
Firdous Ahmad Shah, Lokenath Debnath
doaj   +1 more source

Continuous and discrete Bessel wavelet transforms

Journal of Computational and Applied Mathematics, 2003
The authors speak about the continuous and discrete wavelet transforms associated with the Bessel operator, which are defined and studied in the book of \textit{K. Trimèche} [``Generalized harmonic analysis and wavelet packets'' (2001; Zbl 0976.44009)]. The results presented in this paper are given in this book.
Pathak, R.S., Dixit, M.M.
openaire   +2 more sources

A Cu‐Based Near‐IR Active MOF with an Ion‐Pair Guest Exhibiting Versatile and Selective Gas‐Solid Reactivity

Advanced Materials, EarlyView.
The new Cu‐containing MOF (Me2NH2)(CuICl2)@[Cu4(INA)4Cl2O]·1.5dmf (3) contains a cation and an anion as guests and shows UV‐near‐mid‐IR absorption and near‐IR emission. MOF 3 shows gas‐solid reactivity in the presence of NH3 and HCOOH to yield two new 3D MOF.
Rajat Saha, Alejandro Cortés‐Villena, Silvia Gómez‐Coca, Alberto Fernández‐Alarcón, Joaquín Calbo, Raquel E. Galian, Enrique Ortí, Eliseo Ruiz, Mónica Giménez‐Marqués, Samia Benmansour, Carlos J. Gómez‐García   +10 more
wiley   +1 more source

Color Image Steganography Based on Discrete Wavelet and Discrete Cosine Transforms

Ibn Al-Haitham Journal for Pure and Applied Sciences, 2017
        The secure data transmission over internet is achieved using Steganography. It is the art and science of concealing information in unremarkable cover media so as not to arouse an observer’s suspicion.
A. A. Abdul Latef
doaj  

Development of a Very Low-Cost Deforestation Monitoring System Based on Aerial Image Clustering and Compression Techniques

Advances in Electrical and Computer Engineering
Clustering holds significant utility across a spectrum of several domains, including pattern recognition, image analysis, customer analytics, market segmentation, social network analysis, and numerous other areas. The main advantages of image clustering
ANDREI, A.-T., GRIGORE, O.
doaj   +1 more source

Combined DWT and DCT Image Compression Using Sliding RLE Technique

مجلة بغداد للعلوم, 2011
A number of compression schemes were put forward to achieve high compression factors with high image quality at a low computational time. In this paper, a combined transform coding scheme is proposed which is based on discrete wavelet (DWT) and discrete ...
Baghdad Science Journal
doaj   +1 more source

Using iterated rational filter banks within the ARSIS concept for producing 10 m Landsat multispectral images

, 1998
International audienceThe ARSIS concept is meant to increase the spatial resolution of an image without modification of its spectral contents by merging structures extracted from a higher resolution image of the same scene but in a different spectral ...
Aloisi, Roberto, Blanc, Philippe, Blu, Thierry, Ranchin, Thierry, Wald, Lucien   +4 more
core   +1 more source

Image Restoration: A General Wavelet Frame Based Model and Its Asymptotic Analysis

, 2016
Image restoration is one of the most important areas in imaging science. Mathematical tools have been widely used in image restoration, where wavelet frame based approach is one of the successful examples.
Dong, Bin, Shen, Zuowei, Xie, Peichu
core   +2 more sources