Results 111 to 120 of about 2,157,914 (307)
PAPR reduction of optical OFDM signals in visible light communications
ICT Express, 2019 Orthogonal frequency division multiplexing (OFDM) is extensively used in optical communications to achieve high rate transmission. In this paper, Vandermonde like matrix (VLM) pre-coding approach is offered to reduce the high peak-to-average power ratio (
Abbas Ali Sharifi
doaj +1 more source
Capital in Motion: Synthesizing the Circulation and Reproduction in a Multi‐Sector Growth Model
Metroeconomica, EarlyView.ABSTRACT This paper analyzes Capital in Motion (CIM) in a capitalist economy, based on Karl Marx's Capital, Volume 2. It examines the circuit of capital, distinguishing between stock and flow variables, and integrates a multi‐sector growth model that combines the circuit and turnover of capital with the reproduction scheme.
Takashi Satoh
wiley +1 more source
Blind Watermarking of Color Medical Images Using Hadamard Transform and Fractional-Order Moments. [PDF]
Sensors (Basel), 2021 Abdel-Aziz MM +3 more
europepmc +1 more source
Variable selection via thresholding
Scandinavian Journal of Statistics, EarlyView.Abstract Variable selection comprises an important step in many modern statistical inference procedures. In the regression setting, when estimators cannot shrink irrelevant signals to zero, covariates without relationships to the response often manifest small but nonzero regression coefficients.
Ka Long Keith Ho, Hien Duy Nguyen
wiley +1 more source
Transform coding of DCT coefficients in video encoder
Tongxin xuebao, 2008 The redundancy among discrete cosine transform（DCT） coefficients in video encoder was found very strong,a method for subband decomposition and transform coding was proposed.Each 8×8 DCT spectrum date of macroblock was regrouped to gather the same ...
WANG Zhong-yuan +3 more
doaj +2 more sources
Second Hankel Determinant for a Class of Analytic Functions Defined by Fractional Derivative
International Journal of Mathematics and Mathematical Sciences, 2008 By making use of the fractional differential operator Ωzλ due to Owa and Srivastava, a class of analytic functions ℛλ(α,ρ) (0≤ρ≤1, 0 ...
A. K. Mishra, P. Gochhayat
doaj +1 more source
IMAGE COMPRESSION BY USING WALSH AND FRAMELET TRANSFORM
Mağallaẗ Al-kūfaẗ Al-handasiyyaẗ, 2019 In this paper, Framelet and Walsh transform are proposed for transformation, and then using arithmetic coding for compress an image. The goal is to achieve higher compression ratio by applying two levels Framelet transform (FLT), and then apply 2D Walsh ...
Nora H. Sultan
doaj +1 more source
International Journal of Engineering Science and Technology, 2019 This study proposes a discrete Walsh Hadamard transform (DWHT) based protection technique for the detection of fault and identification of faulty phase in series capacitor compensated three phase transmission line connected with distributed generation ...
Gaurav Kapoor
semanticscholar +1 more source
On the structural and practical identifiability of multi‐echo BBB‐ASL tracer kinetic models
Magnetic Resonance in Medicine, Volume 95, Issue 2, Page 1205-1222, February 2026.Abstract Purpose Tracer kinetic models are used in arterial spin labeling (ASL); however, deciding which model parameters to fix or fit is not always trivial. The identifiability of the resultant system of equations is useful to consider, since it will likely impact parameter uncertainty.
Tabitha J. Manson +6 more
wiley +1 more source
Matrix Factorization and Some Fast Discrete Transforms
AxiomsIn this paper, three discrete transforms related to vector spaces over finite fields are studied. For our purposes, and according to the properties of the finite fields, the most suitable transforms are as follows: for binary fields, this is the Walsh ...
Iliya Bouyukliev +2 more
doaj +1 more source