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421 Results Found

  • Article
  • Open Access
6 Citations
2,467 Views
19 Pages

22 October 2020

This paper presents a unique approach for the dichotomy between useful and adverse variations of key-point descriptors, namely the identity and the expression variations in the descriptor (feature) space. The descriptors variations are learned from t...

  • Article
  • Open Access
6 Citations
2,369 Views
14 Pages

1 September 2021

Three-dimensional (3D) face recognition has become a trending research direction in both industry and academia. However, traditional facial recognition methods carry high computational costs and face data storage costs. Deep learning has led to a sig...

  • Review
  • Open Access
9 Citations
4,043 Views
14 Pages

New Invariant Expressions in Chemical Kinetics

  • Gregory S. Yablonsky,
  • Daniel Branco,
  • Guy B. Marin and
  • Denis Constales

24 March 2020

This paper presents a review of our original results obtained during the last decade. These results have been found theoretically for classical mass-action-law models of chemical kinetics and justified experimentally. In contrast with the traditional...

  • Review
  • Open Access
19 Citations
7,404 Views
40 Pages

18 November 2014

Probability distributions can be read as simple expressions of information. Each continuous probability distribution describes how information changes with magnitude. Once one learns to read a probability distribution as a measurement scale of inform...

  • Article
  • Open Access
20 Citations
6,026 Views
9 Pages

Curvature Invariants for Charged and Rotating Black Holes

  • James Overduin,
  • Max Coplan,
  • Kielan Wilcomb and
  • Richard Conn Henry

24 January 2020

Riemann curvature invariants are important in general relativity because they encode the geometrical properties of spacetime in a manifestly coordinate-invariant way. Fourteen such invariants are required to characterize four-dimensional spacetime in...

  • Article
  • Open Access
23 Citations
8,277 Views
22 Pages

23 May 2013

We derive expressions for the invariant length element and measure for the simple compact Lie group SU(4) in a coordinate system particularly suitable for treating entanglement in quantum information processing. Using this metric, we compute the inva...

  • Feature Paper
  • Article
  • Open Access
1,272 Views
15 Pages

20 January 2025

Let G be a random variable of functionals of an isonormal Gaussian process X defined on some probability space. Studies have been conducted to determine the exact form of the density function of the random variable G. In this paper, unlike previous s...

  • Feature Paper
  • Article
  • Open Access
11 Citations
2,670 Views
17 Pages

24 October 2023

On the basis of a general action principle, we revisit the scale invariant field equation using the cotensor relations by Dirac (1973). This action principle also leads to an expression for the scale factor λ, which corresponds to the one deri...

  • Article
  • Open Access
14 Citations
4,104 Views
25 Pages

23 May 2020

In the differential approach elaborated, we study the evolution of the parameters of Gaussian, mixed, continuous variable density matrices, whose dynamics are given by Hermitian Hamiltonians expressed as quadratic forms of the position and momentum o...

  • Article
  • Open Access
20 Citations
7,154 Views
13 Pages

The Nine-Item Internet Gaming Disorder Scale (IGDS9-SF): Its Psychometric Properties among Sri Lankan Students and Measurement Invariance across Sri Lanka, Turkey, Australia, and the USA

  • Amira Mohammed Ali,
  • Rasmieh Al-Amer,
  • Maha Atout,
  • Tazeen Saeed Ali,
  • Ayman M. Hamdan Mansour,
  • Haitham Khatatbeh,
  • Abdulmajeed A. Alkhamees and
  • Amin Omar Hendawy

The prevalence of internet gaming disorders (IGD) is considerably high among youth, especially with the social isolation imposed by the ongoing COVID-19 pandemic. IGD adversely affects mental health, quality of life, and academic performance. The Int...

  • Article
  • Open Access
1,672 Views
15 Pages

5 January 2024

This paper addresses a mode-dependent state-feedback H control for stochastic descriptor hybrid systems, considering both the absence and presence of actuator saturation. Firstly, the necessary and sufficient conditions for the stochastic admi...

  • Article
  • Open Access
1,981 Views
23 Pages

Implications and Consequences of SL(2R) as Invariance Group in the Description of Complex Systems Dynamics from a Multifractal Perspective of Motion

  • Lucian Dobreci,
  • Oana Rusu,
  • Decebal Vasincu,
  • Mihaela Jarcău,
  • Cristina Marcela Rusu,
  • Silviu Gurlui,
  • Vlad Ghizdovat,
  • Alina Gavrilut and
  • Maricel Agop

30 March 2022

Possible implications and consequences of using SL(2R) as invariance groups in the description at any scale resolution of the dynamics of any complex system are analyzed. From this perspective and based on Jaynes’ remark (any circumstance left...

  • Brief Report
  • Open Access
4 Citations
2,638 Views
6 Pages

Dyadic Invariance of the Positive Sexuality Scale in Chilean Heterosexual Couples

  • Giulia Casu,
  • Mónica Guzmán-González,
  • Ricardo Espinoza-Tapia,
  • Lusmenia Garrido-Rojas,
  • Jaime Barrientos and
  • Fabiola Gómez

Gender differences in sexuality-related dimensions have long been investigated in close relationship research. An important assumption when comparing values across gender in dyadic research is that both partners conceptualize the construct under inve...

  • Article
  • Open Access
2 Citations
2,623 Views
16 Pages

12 July 2021

In recent years, methods were proposed so as to efficiently perform time-variant reliability analysis. However, importance sampling (IS) for time-variant reliability analysis is barely studied in the literature. In this paper, an IS framework is prop...

  • Review
  • Open Access
31 Citations
8,915 Views
23 Pages

MAIT Cells: Partners or Enemies in Cancer Immunotherapy?

  • Dasha T. Cogswell,
  • Laurent Gapin,
  • Heather M. Tobin,
  • Martin D. McCarter and
  • Richard P. Tobin

25 March 2021

A recent boom in mucosal-associated invariant T (MAIT) cell research has identified relationships between MAIT cell abundance, function, and clinical outcomes in various malignancies. As they express a variety of immune checkpoint receptors and ligan...

  • Article
  • Open Access
4 Citations
4,924 Views
18 Pages

12 July 2013

In this paper, we formulate a supersymmetric extension of the Euler system of equations. We compute a superalgebra of Lie symmetries of the supersymmetric system. Next, we classify the one-dimensional subalgebras of this superalgebra into 49 equivale...

  • Proceeding Paper
  • Open Access
1,668 Views
9 Pages

We consider multivariate-centered Gaussian models for the random vector (Z1,,Zp), whose conditional structure is described by a homogeneous graph and which is invariant under the action of a permutation subgroup. The following paper is concer...

  • Article
  • Open Access
1 Citations
2,454 Views
14 Pages

3 August 2020

Predicting the effects of changes in dissolved input concentration on the variability of discharge concentration at the outlet of the catchment is essential to improve our ability to address the problem of surface water quality. The goal of this stud...

  • Article
  • Open Access
8 Citations
4,121 Views
17 Pages

Considering coherently-distributed (CD) sources are correlated with each other, a two-dimensional (2D) coherent CD source model is proposed according to the characteristics of an underwater acoustic channel. Under the assumption of small angular spre...

  • Article
  • Open Access
2 Citations
2,367 Views
24 Pages

11 January 2024

We study the evolution of quantum fluctuations of gravity around an inflationary solution in renormalizable quantum gravity, in which the initial scalar-fluctuation dominance is shown by the background-free nature expressed by a special conformal inv...

  • Communication
  • Open Access
4 Citations
4,150 Views
11 Pages

Propagation-Invariant Off-Axis Elliptic Gaussian Beams with the Orbital Angular Momentum

  • Alexey A. Kovalev,
  • Victor V. Kotlyar and
  • Darya S. Kalinkina

We studied paraxial light beams, obtained by a continuous superposition of off-axis Gaussian beams with their phases chosen so that the whole superposition is invariant to free-space propagation, i.e., does not change its transverse intensity shape....

  • Article
  • Open Access
1 Citations
326 Views
15 Pages

In this study, we present a unified symmetry-conservation solution analysis of a well-posed resonant nonlinear Schrödinger (NLS)-type equation incorporating spatio-temporal dispersion and inter-modal dispersion. Working within the truncated M-fr...

  • Article
  • Open Access
2 Citations
2,567 Views
25 Pages

24 October 2024

We first briefly review the adventure of scale invariance in physics, from Galileo Galilei, Weyl, Einstein, and Feynman to the revival by Dirac (1973) and Canuto et al. (1977). In the way that the geometry of space–time can be described by the...

  • Review
  • Open Access
6 Citations
3,510 Views
33 Pages

14 May 2020

We review the emergence of hypergeometric structures (of F4 Appell functions) from the conformal Ward identities (CWIs) in conformal field theories (CFTs) in dimensions d > 2. We illustrate the case of scalar 3- and 4-point functions. 3-point func...

  • Review
  • Open Access
29 Citations
6,875 Views
25 Pages

16 December 2018

The fundamental equations of various disciplines often seem to share the same basic structure. Natural selection increases information in the same way that Bayesian updating increases information. Thermodynamics and the forms of common probability di...

  • Article
  • Open Access
3 Citations
2,996 Views
17 Pages

On Determination of Wave Velocities through the Eigenvalues of Material Objects

  • Mikhail U. Nikabadze,
  • Sergey A. Lurie,
  • Hovik A. Matevossian and
  • Armine R. Ulukhanyan

The statement of the eigenvalue problem for a tensor–block matrix of any order and of any

even rank is formulated. It is known that the eigenvalues of the tensor and the tensor–block matrix

are invariant quantities. Therefore, in this work,...

  • Article
  • Open Access
7 Citations
1,723 Views
15 Pages

15 December 2022

The definitions of scattering matrix and inclusive scattering matrix in the framework of formulation of quantum field theory in terms of associative algebras with involution are presented. The scattering matrix is expressed in terms of Green function...

  • Feature Paper
  • Article
  • Open Access
1,511 Views
28 Pages

On the Inversion of the Mellin Convolution

  • Gabriel Bengochea,
  • Manuel Ortigueira and
  • Fernando Arroyo-Cabañas

28 January 2025

The deconvolution of the Mellin convolution is studied for a great variety of functions that are expressed in terms of α–log-exponential monomials. It is shown that the generation of pairs of functions satisfying a Sonin-like condition ca...

  • Article
  • Open Access
1 Citations
2,838 Views
10 Pages

26 June 2022

Most quantum gravity theories quantize space-time on the order of Planck length (p ). Some of these theories, such as loop quantum gravity (LQG), predict that this discreetness could be manifested through Lorentz invariance violations (LI...

  • Article
  • Open Access
1,215 Views
17 Pages

6 June 2024

One of the most relevant topics in web theory is linearization. A particular class of linearizable webs is the Grassmannizable web. Akivis gave a characterization of such a web, showing that Grassmannizable webs are equivalent to isoclinic and transv...

  • Article
  • Open Access
2,016 Views
21 Pages

10 February 2022

In this paper, we study contact magnetic geodesics in a 3-dimensional Lie group G endowed with a left invariant almost cosymplectic structure. We distinguish the two cases: G is unimodular, and G is nonunimodular. We pay a careful attention to the sp...

  • Article
  • Open Access
2 Citations
2,353 Views
12 Pages

11 February 2023

Cross-database micro-expression recognition (MER) is a more challenging task than the conventional one because its labeled training (source) and unlabeled testing (target) micro-expression (ME) samples are from different databases. In this circumstan...

  • Communication
  • Open Access
34 Citations
4,664 Views
5 Pages

Expression Pattern of the SARS-CoV-2 Entry Genes ACE2 and TMPRSS2 in the Respiratory Tract

  • Yichuan Liu,
  • Hui-Qi Qu,
  • Jingchun Qu,
  • Lifeng Tian and
  • Hakon Hakonarson

16 October 2020

To address the expression pattern of the SARS-CoV-2 receptor ACE2 and the viral priming protease TMPRSS2 in the respiratory tract, this study investigated RNA sequencing transcriptome profiling of samples of airway and oral mucosa. As shown, ACE2 has...

  • Article
  • Open Access
7 Citations
3,344 Views
14 Pages

Non-genotoxic hepatocarcinogens (NGHCs) can only be confirmed by 2-year rodent studies. Toxicogenomics (TGx) approaches using gene expression profiles from short-term animal studies could enable early assessment of NGHCs. However, high variance in th...

  • Article
  • Open Access
14 Citations
6,181 Views
25 Pages

Wearable Sensor Localization Considering Mixed Distributed Sources in Health Monitoring Systems

  • Liangtian Wan,
  • Guangjie Han,
  • Hao Wang,
  • Lei Shu,
  • Nanxing Feng and
  • Bao Peng

12 March 2016

In health monitoring systems, the base station (BS) and the wearable sensors communicate with each other to construct a virtual multiple input and multiple output (VMIMO) system. In real applications, the signal that the BS received is a distributed...

  • Article
  • Open Access
10 Citations
3,464 Views
15 Pages

26 April 2022

Domain diversities, including inconsistent annotation and varied image collection conditions, inevitably exist among different facial expression recognition (FER) datasets, posing an evident challenge for adapting FER models trained on one dataset to...

  • Article
  • Open Access
14 Citations
10,315 Views
11 Pages

Schultz Index of Armchair Polyhex Nanotubes

  • Mehdi Eliasi and
  • Nafiseh Salehi

29 October 2008

The study of topological indices – graph invariants that can be used for describing and predicting physicochemical or pharmacological properties of organic compounds – is currently one of the most active research fields in chemical graph theory. In t...

  • Article
  • Open Access
3 Citations
2,851 Views
22 Pages

Classification of Metaplectic Fusion Categories

  • Eddy Ardonne,
  • Peter E. Finch and
  • Matthew Titsworth

5 November 2021

In this paper, we study a family of fusion and modular systems realizing fusion categories Grothendieck equivalent to the representation category for so(2p+1)2. These categories describe non-abelian anyons dubbed ‘metaplectic anyons’. We obtain expli...

  • Article
  • Open Access
2,348 Views
18 Pages

Geometry of Tangent Poisson–Lie Groups

  • Ibrahim Al-Dayel,
  • Foued Aloui and
  • Sharief Deshmukh

3 January 2023

Let G be a Poisson–Lie group equipped with a left invariant contravariant pseudo-Riemannian metric. There are many ways to lift the Poisson structure on G to the tangent bundle TG of G. In this paper, we induce a left invariant contravariant ps...

  • Article
  • Open Access
2 Citations
1,773 Views
23 Pages

4 April 2023

Models of ferromagnetic hysteresis are established by following a thermodynamic approach. The class of constitutive properties is required to obey the second law, expressed by the Clausius–Duhem inequality, and the Euclidean invariance. While t...

  • Article
  • Open Access
36 Citations
5,071 Views
17 Pages

A Novel Unitary ESPRIT Algorithm for Monostatic FDA-MIMO Radar

  • Feilong Liu,
  • Xianpeng Wang,
  • Mengxing Huang,
  • Liangtian Wan,
  • Huafei Wang and
  • Bin Zhang

4 February 2020

A novel unitary estimation of signal parameters via rotational invariance techniques (ESPRIT) algorithm, for the joint direction of arrival (DOA) and range estimation in a monostatic multiple-input multiple-output (MIMO) radar with a frequency divers...

  • Article
  • Open Access
3,171 Views
21 Pages

3 October 2020

Ordinary differential equations with n-valued impulses are examined via the associated Poincaré translation operators from three perspectives: (i) the lower estimate of the number of periodic solutions on the compact subsets of Euclidean space...

  • Review
  • Open Access
12 Citations
9,330 Views
18 Pages

Invariant natural killer T (iNKT) cells are an “innate-like” T cell lineage that recognize glycolipid rather than peptide antigens by their semi-invariant T cell receptors. Because iNKT cells can stimulate an extensive array of immune responses, ther...

  • Article
  • Open Access
3 Citations
688 Views
14 Pages

22 July 2025

In this study, We explore for Minkowski 3-space E13 harmonic surfaces’ geometric features by employing a common tangent vector field along a curve situated on the surface. Our analysis is grounded in the rotation minimizing (RM) Darboux frame,...

  • Article
  • Open Access
44 Citations
5,739 Views
30 Pages

Comparison of Reduction Methods for Finite Element Geometrically Nonlinear Beam Structures

  • Yichang Shen,
  • Alessandra Vizzaccaro,
  • Nassim Kesmia,
  • Ting Yu,
  • Loïc Salles,
  • Olivier Thomas and
  • Cyril Touzé

4 March 2021

The aim of this contribution is to present numerical comparisons of model-order reduction methods for geometrically nonlinear structures in the general framework of finite element (FE) procedures. Three different methods are compared: the implicit co...

  • Feature Paper
  • Article
  • Open Access
3 Citations
1,836 Views
34 Pages

26 April 2024

The Sturm–Liouville boundary value problem (SLBVP) stands as a fundamental cornerstone in the realm of mathematical analysis and physical modeling. Also known as the Sturm–Liouville problem (SLP), this paper explores the intricacies of th...

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