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8,733 Results Found

  • Article
  • Open Access
1 Citations
2,106 Views
17 Pages

4 January 2024

Banding the inverse of a covariance matrix has become a popular technique for estimating a covariance matrix from a limited number of samples. It is of interest to provide criteria to determine if a matrix is bandable, as well as to test the bandedne...

  • Article
  • Open Access
432 Views
32 Pages

14 September 2026

This paper develops a multidimensional differential-transform-based framework for computing matrix characteristics of complex-valued multiparameter matrix functions. The proposed approach extends differential-transform techniques from one-parameter m...

  • Article
  • Open Access
1 Citations
7,300 Views
14 Pages

Expected Values of Scalar-Valued Functions of a Complex Wishart Matrix

  • Daya K. Nagar,
  • Alejandro Roldán-Correa and
  • Saralees Nadarajah

The complex Wishart distribution has ample applications in science and engineering. In this paper, we give explicit expressions for E(tr(Wh))g(tr(Wj))i and E(tr(W−h))g(tr(W−j))i, respectively, for particular values of g, h, i, j, g+h+i+j&...

  • Article
  • Open Access
2,027 Views
17 Pages

11 May 2024

Several extensions of the basic scalar variable logistic density to the multivariate and matrix-variate cases, in the real and complex domains, are given where the extended forms end up in extended zeta functions. Several cases of multivariate and ma...

  • Article
  • Open Access
7 Citations
3,952 Views
17 Pages

10 December 2021

We generalize the property of complex numbers to be closely related to Euclidean circles by constructing new classes of complex numbers which in an analogous sense are closely related to semi-antinorm circles, ellipses, or functionals which are homog...

(This article belongs to the Special Issue Complex Analysis)
  • Article
  • Open Access
1 Citations
1,762 Views
14 Pages

10 November 2023

This paper is about Dirichlet averages in the matrix-variate case or averages of functions over the Dirichlet measure in the complex domain. The classical power mean contains the harmonic mean, arithmetic mean and geometric mean (Hardy, Littlewood an...

(This article belongs to the Special Issue Nonadditive Entropies and Nonextensive Statistical Mechanics—Dedicated to Professor Constantino Tsallis on the Occasion of His 80th Birthday)
  • Article
  • Open Access
331 Views
11 Pages

Complex Metal Matrix Composites Produced by Powder Metallurgy from Core–Shell Powders

  • Angelina Strakošová,
  • Drahomír Dvorský,
  • Filip Průša,
  • Andrea Školáková and ,
  • Jakub Svoboda,
  • Stanislav Habr and
  • Pavel Lejček
  • + 2 authors+ 0 author

29 September 2026

This study investigates the possibility of producing complex metal matrix composites (CMMCs) via powder metallurgy. Two types of powders, a mixture of core–shell Cu@Ag+W@Ag powder and dual core–shell W@(Cu@Ag) powder, have been successful...

  • Article
  • Open Access
8 Citations
2,680 Views
19 Pages

18 June 2022

The solution of a complex-valued matrix pseudoinverse is one of the key steps in various science and engineering fields. Owing to its important roles, researchers had put forward many related algorithms. With the development of research, a time-varyi...

  • Article
  • Open Access
29 Citations
5,208 Views
17 Pages

Biofilm Formed by Candida haemulonii Species Complex: Structural Analysis and Extracellular Matrix Composition

  • Lívia S. Ramos,
  • Thaís P. Mello,
  • Marta H. Branquinha and
  • André L. S. Santos

3 April 2020

Candida haemulonii species complex (C. haemulonii, C. duobushaemulonii, and C. haemulonii var. vulnera) has emerged as opportunistic, multidrug-resistant yeasts able to cause fungemia. Previously, we showed that C. haemulonii complex formed biofilm o...

(This article belongs to the Special Issue Fungal Biofilms 2020)
  • Article
  • Open Access
1 Citations
3,652 Views
14 Pages

Qualitative and Quantitative Analysis Method of Recombinant Collagen in Complex Matrix Based on HPLC-MS/MS

  • Jianping Gao,
  • Liping Jia,
  • Zhenhu Guo,
  • Liming Xu and ,
  • Daidi Fan and
  • Guifeng Zhang
  • + 1 author+ 0 author

26 November 2024

The purpose of this study is to achieve the quantitative detection of recombinant type III collagen (rh-COL-III) in dressings with complex matrix. First of all, the marker peptide (GEAGIPGVPGAK) of rhCOL-III was identified with HPLC-MS/MS. Then, a qu...

(This article belongs to the Topic Application of Liquid Chromatography-Mass Spectrometry and Related Techniques)
  • Technical Note
  • Open Access
5 Citations
4,143 Views
15 Pages

15 November 2023

In this paper, we address the problem of covariance matrix estimation for radar adaptive detection under non-Gaussian clutter. Traditional model-based estimators may suffer from performance loss due to the mismatch between real data and assumed model...

(This article belongs to the Topic Radar Signal and Data Processing with Applications)
  • Article
  • Open Access
4 Citations
3,735 Views
12 Pages

1 December 2022

The separation of the combined effects of absorption and scattering in complex media is a major issue for better characterization and prediction of media properties. In this study, an approach coupling polarized light spectroscopy and the Mueller mat...

(This article belongs to the Collection Optical Chemical Sensors: Design and Applications)
  • Article
  • Open Access
5 Citations
3,207 Views
20 Pages

Advanced Secondary Intention Healing for Complex Soft-Tissue Defects Using Reprocessed Micronized Acellular Dermal Matrix

  • Ha Jong Nam,
  • Dong Gyu Kim,
  • Je Yeon Byeon,
  • Da Woon Lee and ,
  • Jun Hyuk Kim,
  • Se Young Kim and
  • Hwan Jun Choi
  • + 2 authors+ 0 author

14 November 2024

Secondary intention healing offers an alternative when surgical options are infeasible. This study analyzed the effect of micronized acellular dermal matrices (mADMs; CGderm Matrix®, CG Bio, Seoul, Republic of Korea) on secondary intention healin...

(This article belongs to the Special Issue Novel Approaches in Plastic and Reconstructive Surgery to Improve Quality of Life)
  • Article
  • Open Access
11 Citations
5,155 Views
22 Pages

15 December 2021

Fluid-structure interaction (FSI) is prevalent in aircraft hydraulic pipes due to high-pressure fluid pulsation, complex pipe path routing and boundary constraints, which pose a serious threat to the safety and reliability of the aircraft hydraulic s...

(This article belongs to the Section Mechanical Engineering)
  • Article
  • Open Access
39 Citations
9,287 Views
16 Pages

Treatment of Complex Wounds with NovoSorb® Biodegradable Temporising Matrix (BTM)—A Retrospective Analysis of Clinical Outcomes

  • Frederik Schlottmann,
  • Doha Obed,
  • Alperen S. Bingöl,
  • Vincent März and ,
  • Peter M. Vogt and
  • Nicco Krezdorn
  • + 1 author+ 0 author

3 December 2022

Complex and chronic wounds represent a highly prevalent condition worldwide that requires a multimodal and interdisciplinary treatment approach to achieve good functional and aesthetic outcomes. Due to increasing costs of health care, an aging popula...

(This article belongs to the Special Issue Implications for Personalized Plastic, Aesthetic and Reconstructive Surgery)
  • Article
  • Open Access
2 Citations
2,161 Views
22 Pages

16 December 2024

In the requirement-driven forward design process of civil aircraft, the large number of design tasks of complex systems with varying difficulty and the complex relationships between design tasks lead to unnecessary repetitive design iterations. In or...

(This article belongs to the Special Issue Advanced Model-Based Systems Engineering)
  • Review
  • Open Access
18 Citations
5,787 Views
38 Pages

Prostate cancer is among the top five cancer types according to incidence and mortality. One of the main obstacles in prostate cancer management is the inability to foresee its course, which ranges from slow growth throughout years that requires mini...

(This article belongs to the Special Issue Feature Reviews in Cancer Biomarkers)
  • Article
  • Open Access
1 Citations
1,426 Views
16 Pages

Purified Native Collagen Extracellular Matrix Plus Polyhexamethylene Biguanide Functions as a Barrier to Protect Complex Wounds in an In Vivo Model

  • Rami A. Nasrallah,
  • Kelly A. Kimmerling,
  • James L. Cook,
  • Chantelle C. Bozynski and ,
  • Aaron M. Stoker,
  • James P. Stannard and
  • Katie C. Mowry
  • + 2 authors+ 0 author

20 September 2025

Complex surgical wounds often necessitate repeated irrigation and debridement (I&D), resulting in substantial burdens. Purified native collagen extracellular matrix plus polyhexamethylene biguanide (PCMP) is a protective antimicrobial barrier tha...

(This article belongs to the Special Issue Animal Models for Human Diseases)
  • Feature Paper
  • Article
  • Open Access
6 Citations
2,847 Views
15 Pages

Lipocalin-2, Matrix Metalloproteinase-9, and MMP-9/NGAL Complex in Upper Aerodigestive Tract Carcinomas: A Pilot Study

  • Luca Cavalcanti,
  • Silvia Francati,
  • Giampiero Ferraguti,
  • Francesca Fanfarillo and ,
  • Daniele Peluso,
  • Christian Barbato,
  • Antonio Greco,
  • Antonio Minni and
  • Carla Petrella
  • + 4 authors+ 0 author

29 March 2025

Upper aerodigestive tract (UADT) carcinomas have a high and rapidly increasing incidence, particularly in industrialized countries. The identification of diagnostic and prognostic biomarkers remains a key objective in oncological research. However, c...

(This article belongs to the Special Issue New Trends and Advances in Diagnosis and Prognosis of Head and Neck Cancer from Carcinogenesis to Future Molecular Targeted Therapies: 2nd Edition)
  • Article
  • Open Access
7 Citations
3,005 Views
11 Pages

16 August 2021

The boron difluoride complex is known as an extraordinary class of fluorescent dyes, which has attracted research interest because of its excellent properties. This article reports the optical properties such as absorption, fluorescence, molar absorp...

(This article belongs to the Section Polymer Physics and Theory)
  • Article
  • Open Access
500 Views
14 Pages

9 May 2026

Complex-valued time-varying matrix inversion (CTMI) plays a crucial role in many engineering and scientific applications, yet achieving fast and robust solutions while maintaining a simple structure is a challenging task. In this paper, a novel finit...

(This article belongs to the Special Issue Symmetry and Asymmetry in Intelligent Control and Computing)
  • Article
  • Open Access
13 Citations
2,846 Views
20 Pages

Dynamic complex matrix inversion (DCMI) problems frequently arise in the territories of mathematics and engineering, and various recurrent neural network (RNN) models have been reported to effectively find the solutions of the DCMI problems. However,...

(This article belongs to the Special Issue Analog AI Circuits and Systems)
  • Article
  • Open Access
11 Citations
6,226 Views
44 Pages

12 March 2020

We reveal the analytic relations between a matrix permanent and major nature’s complexities manifested in critical phenomena, fractal structures and chaos, quantum information processes in many-body physics, number-theoretic complexity in mathe...

(This article belongs to the Special Issue Exploring the NP-Complexity of Nature: Critical Phenomena, Chaos, Fractals, Graphs, Boson Sampling, Quantum Computing and More)
  • Review
  • Open Access
21 Citations
5,134 Views
16 Pages

Metal Complexes as Promising Matrix Metalloproteinases Regulators

  • Yen Thi Nguyen,
  • Namdoo Kim and
  • Hyuck Jin Lee

Nowadays, cancers and dementia, such as Alzheimer’s disease, are the most fatal causes of death. Many studies tried to understand the pathogenesis of those diseases clearly and develop a promising way to treat the diseases. Matrix metalloprotei...

(This article belongs to the Special Issue Current Advances in Metal Complexes with Biological Activity)
  • Article
  • Open Access
15 Citations
4,621 Views
10 Pages

Detection of Protein Complexes Based on Penalized Matrix Decomposition in a Sparse Protein–Protein Interaction Network

  • Buwen Cao,
  • Shuguang Deng,
  • Hua Qin,
  • Pingjian Ding and ,
  • Shaopeng Chen and
  • Guanghui Li
  • + 1 author+ 0 author

High-throughput technology has generated large-scale protein interaction data, which is crucial in our understanding of biological organisms. Many complex identification algorithms have been developed to determine protein complexes. However, these me...

(This article belongs to the Special Issue Molecular Computing and Bioinformatics)
  • Article
  • Open Access
1 Citations
4,074 Views
21 Pages

21 June 2024

Toeplitz matrix–vector products are used in many digital signal processing applications. Direct methods for calculating such products require N2 multiplications and N(N−1) additions, where N denotes the order of the Toeplitz matrix. In th...

  • Article
  • Open Access
2 Citations
1,868 Views
19 Pages

2 June 2024

The problem of inverting dynamic complex matrices remains a central and intricate challenge that has garnered significant attention in scientific and mathematical research. The zeroing neural network (ZNN) has been a notable approach, utilizing time...

(This article belongs to the Special Issue Differential Equations and Inverse Problems)
  • Review
  • Open Access
13 Citations
3,803 Views
28 Pages

25 September 2023

The reactive open-shell species play a very important role in the radiation-induced molecular evolution occurring in the cold areas of space and presumably leading to the formation of biologically relevant molecules. This review presents an insight i...

(This article belongs to the Special Issue Recent Advances in Free Radicals, Radical Ions and Radical Pairs)
  • Feature Paper
  • Review
  • Open Access
28 Citations
5,325 Views
27 Pages

10 December 2020

Every year, more Cu(II) complexes are proven to be biologically active species, but very few are developed as drugs or entered in clinical trials. This is due to their poor water solubility and lipophilicity, low stability as well as in vivo inactiva...

(This article belongs to the Special Issue New Trends in Developing Complexes as Biological Active Species)
  • Article
  • Open Access
4 Citations
2,911 Views
13 Pages

28 June 2023

Recent joint mass spectrometric and IR photodissociation studies have provided proof on the existence of octa-coordinated ionic lanthanide-carbonyl complexes under those extreme gaseous conditions. In contrast, in older literature concerning cryogeni...

(This article belongs to the Section Molecular Structure)
  • Review
  • Open Access
32 Citations
7,152 Views
13 Pages

19 May 2021

NADH:ubiquinone-oxidoreductase (complex I) is the largest membrane protein complex of the respiratory chain. Complex I couples electron transfer to vectorial proton translocation across the inner mitochondrial membrane. The L shaped structure of comp...

(This article belongs to the Special Issue Impaired Mitochondrial Bioenergetics under Pathological Conditions)
  • Article
  • Open Access
6 Citations
2,665 Views
15 Pages

22 August 2023

The measurement matrix used influences the performance of image reconstruction in compressed sensing. To enhance the performance of image reconstruction in compressed sensing, two different Gaussian random matrices were orthogonalized via Gram–...

(This article belongs to the Section Signal and Data Analysis)
  • Article
  • Open Access
9 Citations
5,632 Views
18 Pages

Computing the Moments of the Complex Gaussian: Full and Sparse Covariance Matrix

  • Claudia Fassino,
  • Giovanni Pistone and
  • Maria Piera Rogantin

14 March 2019

Given a multivariate complex centered Gaussian vector Z = ( Z 1 , ⋯ , Z p ) with non-singular covariance matrix Σ , we derive sufficient conditions on the nullity of the complex moments and we give a closed-form expression for...

  • Article
  • Open Access
3 Citations
3,738 Views
10 Pages

27 January 2022

Using the Dunford–Taylor integral and a representation formula for the resolvent of a non-singular complex matrix, we find the logarithm of a non-singular complex matrix applying the Cauchy’s residue theorem if the matrix eigenvalues are...

(This article belongs to the Collection Mathematical Analysis and Applications)
  • Review
  • Open Access
232 Citations
16,866 Views
20 Pages

The Extracellular Matrix and Pancreatic Cancer: A Complex Relationship

  • Maximilian Weniger,
  • Kim C. Honselmann and
  • Andrew S. Liss

6 September 2018

Pancreatic ductal adenocarcinoma (PDAC) has an extraordinarily dense fibrotic stroma that impedes tumor perfusion and delivery of anticancer drugs. Since the extracellular matrix (ECM) comprises the bulk of the stroma, it is primarily responsible for...

(This article belongs to the Special Issue Latest Development in Pancreatic Cancer)
  • Article
  • Open Access
13 Citations
4,581 Views
16 Pages

Role of Autophagy in Von Willebrand Factor Secretion by Endothelial Cells and in the In Vivo Thrombin-Antithrombin Complex Formation Promoted by the HIV-1 Matrix Protein p17

  • Antonella Bugatti,
  • Stefania Marsico,
  • Pietro Mazzuca,
  • Kai Schulze and ,
  • Thomas Ebensen,
  • Cinzia Giagulli,
  • Esther Peña,
  • Lina Badimón,
  • Mark Slevin and
  • Francesca Caccuri
  • + 7 authors+ 2 authors

Although the advent of combined antiretroviral therapy has substantially improved the survival of HIV-1-infected individuals, non-AIDS-related diseases are becoming increasingly prevalent in HIV-1-infected patients. Persistent abnormalities in coagul...

(This article belongs to the Special Issue Autophagy in Health, Ageing and Disease)
  • Article
  • Open Access
8 Citations
3,065 Views
17 Pages

Prostate cancer is a heterogeneous disease, and one of the main obstacles in its management is the inability to foresee its course. Therefore, novel biomarkers are needed that will guide the treatment options. The extracellular matrix (ECM) is an imp...

(This article belongs to the Special Issue Prostate Cancer: From Pathology to Novel Therapeutic Approaches)
  • Article
  • Open Access
2 Citations
229 Views

Background: Chronic, nonhealing wounds are a growing health-care problem in the United States, affecting more than 6.5 million patients annually and costing the health-care system over $25 billion. Chronic wounds, including diabetic foot ulcers (DFUs...

  • Article
  • Open Access
10 Citations
2,964 Views
27 Pages

31 March 2022

In current research of complex system health assessment with evidential reasoning (ER) rule, the relationship between the indicators reference grades and pre-defined assessment result grades is regarded as a one to one correspondence. However, in eng...

(This article belongs to the Special Issue Deep Learning-Based Machinery Fault Diagnostics)
  • Article
  • Open Access
8 Citations
3,133 Views
15 Pages

Modeling of Complex Integrated Photonic Resonators Using the Scattering Matrix Method

  • Di Jin,
  • Sian Ren,
  • Junkai Hu,
  • Duan Huang and ,
  • David J. Moss and
  • Jiayang Wu
  • + 1 author+ 0 author

22 November 2024

We propose a universal approach for modeling complex integrated photonic resonators based on the scattering matrix method. By dividing devices into basic elements including directional couplers and connecting waveguides, our approach can be used to m...

  • Review
  • Open Access
75 Citations
12,370 Views
27 Pages

10 July 2021

Multicellular eukaryotes are characterized by an expanded extracellular matrix (ECM) with a diversified composition. The ECM is involved in determining tissue texture, screening cells from the outside medium, development, and innate immunity, all of...

(This article belongs to the Special Issue Evolution of Multicellularity)
  • Article
  • Open Access
35 Citations
5,259 Views
14 Pages

24 March 2022

Standard methods used in the encryption and decryption process are implemented to protect confidential data. These methods require many arithmetic and logical operations that negatively affect the performance of the encryption process. In addition, t...

(This article belongs to the Section A: Computer Science)
  • Article
  • Open Access
13 Citations
3,073 Views
13 Pages

Complex Spatial Illumination Scheme Optimization of Backscattering Mueller Matrix Polarimetry for Tissue Imaging and Biosensing

  • Wei Jiao,
  • Zheng Zhang,
  • Nan Zeng,
  • Rui Hao and ,
  • Honghui He,
  • Chao He and
  • Hui Ma
  • + 2 authors+ 0 author

22 April 2024

Polarization imaging and sensing techniques have shown great potential for biomedical and clinical applications. As a novel optical biosensing technology, Mueller matrix polarimetry can provide abundant microstructural information of tissue samples....

(This article belongs to the Special Issue Photonics for Bioapplications: Sensors and Technology)
  • Article
  • Open Access
34 Citations
3,183 Views
12 Pages

Modification of Cement Matrix with Complex Additive Based on Chrysotyl Nanofibers and Carbon Black

  • Zarina Saidova,
  • Grigory Yakovlev,
  • Olga Smirnova,
  • Anastasiya Gordina and
  • Natalia Kuzmina

28 July 2021

This paper presents the results of studying the properties of cement-based composites modified with a complex additive based on chrysotile nanofibers and carbon black. The optimal composition of complex additive was stated due to the particle size an...

(This article belongs to the Special Issue New Insights into Construction Materials)
  • Article
  • Open Access
1 Citations
1,613 Views
18 Pages

Characterization and Spectroscopic Studies of the Morin-Zinc Complex in Solution and in PMMA Solid Matrix

  • Malgorzata Sypniewska,
  • Beata Jędrzejewska,
  • Marek Pietrzak,
  • Marek Trzcinski and ,
  • Robert Szczęsny,
  • Mateusz Chorobinski and
  • Lukasz Skowronski
  • + 2 authors+ 0 author

21 December 2025

Flavonoids, natural organic compounds from the polyphenolic group with broad bioactive and pharmaceutical properties, are strong ligands for many metal ions. This work describes the formation of the complex between Zn(II) and morin. The synthesized c...

(This article belongs to the Section Optics and Lasers)
  • Review
  • Open Access
23 Citations
5,875 Views
27 Pages

10 October 2022

Neuroblastoma (NB) is a pediatric neuroendocrine neoplasm. It arises from the sympatho-adrenal lineage of neural-crest-derived multipotent progenitor cells that fail to differentiate. NB is the most common extracranial tumor in children, and it manif...

(This article belongs to the Section Cell Motility and Adhesion)
  • Article
  • Open Access
3 Citations
3,479 Views
19 Pages

1 September 2023

Here, we propose a drug delivery system for ciprofloxacin (CF) based on cyclodextrin (CD) polymer. We obtained a 3D matrix system with encapsulated drug molecules by crosslinking CF+CD non-covalent complexes with 1.6-hexamethylene isocyanate. The obt...

(This article belongs to the Section Medicinal Chemistry)
  • Article
  • Open Access
16 Citations
4,213 Views
25 Pages

Matrix Tablets Based on Chitosan–Carrageenan Polyelectrolyte Complex: Unique Matrices for Drug Targeting in the Intestine

  • Alena Komersová,
  • Roman Svoboda,
  • Barbora Skalická,
  • Martin Bartoš and ,
  • Eva Šnejdrová,
  • Jitka Mužíková and
  • Kevin Matzick
  • + 2 authors+ 0 author

9 August 2022

The present study focused on the more detailed characterization of chitosan–carrageenan-based matrix tablets with respect to their potential utilization for drug targeting in the intestine. The study systematically dealt with the particular sta...

(This article belongs to the Special Issue Chitosan Based Novel Pharmaceutical Dosage Forms and Drug Delivery Systems)
  • Article
  • Open Access
3,263 Views
24 Pages

Hermitian and Unitary Almost-Companion Matrices of Polynomials on Demand

  • Liubov A. Markovich,
  • Agostino Migliore and
  • Antonino Messina

8 February 2023

We introduce the concept of the almost-companion matrix (ACM) by relaxing the non-derogatory property of the standard companion matrix (CM). That is, we define an ACM as a matrix whose characteristic polynomial coincides with a given monic and genera...

(This article belongs to the Special Issue Quantum Mechanics and Its Foundations III)
  • Article
  • Open Access
5 Citations
2,288 Views
23 Pages

13 November 2024

This study presents the complex transfer matrix method (CTMM) as an advanced mathematical model, providing significant advantages over the finite element method (FEM) by yielding rapid solutions for complex optimization problems. In order to design a...

(This article belongs to the Topic Multi-scale Modeling and Optimisation of Materials)

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