Results 31 to 40 of about 44,174 (262)

The nonnegative Q−matrix completion problem

Journal of Algebra Combinatorics Discrete Structures and Applications, 2017
Summary: In this paper, the nonnegative \(Q\)-matrix completion problem is studied. A real \(n\times n\) matrix is a \(Q\)-matrix if for \(k\in \{1,\dots, n\}\), the sum of all \(k \times k\) principal minors is positive. A digraph \(D\) is said to have nonnegative \(Q\)-completion if every partial nonnegative \(Q\)-matrix specifying \(D\) can be ...
SARMA, Bhaba Kumar, SİNHA, Kalyan
openaire   +4 more sources

Design and analysis strategies for robust microbiome ageing research

FEBS Letters, EarlyView.
The gut microbiome changes with age and associates with age‐related morbidity and mortality, establishing it as a potential biomarker and intervention target for ageing. Realising this potential requires methodological rigour, yet distinguishing biological signals from methodological artefacts remains challenging across cohorts. This review provides an
Mark Olenik, İsmail Güderer, Yi Wang, Tayyaba Alvi, Prasoon Pandey, Handan Melike Dönertaş   +5 more
wiley   +1 more source

Shaping Intensities of Complex Scalar Fields in Inhomogeneous Scenarios via Linearly Combined Bricks

IEEE Open Journal of Antennas and Propagation
The ability to enforce a given behaviour on the electromagnetic field intensity distribution is relevant in a wide range of applications, including the particularly challenging case where shaping is required in heterogeneous media.
Martina Teresa Bevacqua, Tommaso Isernia, Sabrina Zumbo   +2 more
doaj   +1 more source

Engineering peptides into antibodies—opportunities and strategies for therapeutic innovation

FEBS Letters, EarlyView.
Peptides and antibodies occupy complementary therapeutic niches. Peptides recognize difficult targets in a compact format, while antibodies add specificity, long half‐life, and effector functions. This review examines strategies that merge both modalities—peptide grafting into loops, terminal and Fc fusions, and bioconjugation—highlighting how ...
Jinling Wang, Ruslana Romaniuk, Hristo L. Svilenov   +2 more
wiley   +1 more source

Correntropy Based Matrix Completion

Entropy, 2018
This paper studies the matrix completion problems when the entries are contaminated by non-Gaussian noise or outliers. The proposed approach employs a nonconvex loss function induced by the maximum correntropy criterion.
Yuning Yang, Yunlong Feng, Johan A. K. Suykens   +2 more
doaj   +1 more source

The nonnegative P_0-matrix completion problem

The Electronic Journal of Linear Algebra, 2003
Let \({\mathcal N}= \{1,2,\dots,n\}\) and \(Q\) be a subset of \({\mathcal N}\times{\mathcal N}\). The digraph of \(Q\) is the digraph having vertex set \({\mathcal N}\) and as arcs, the ordered pairs \((i,j)\in Q\) where \(i\neq j\). Assume that \((i,i)\in Q\) for all \(i\in{\mathcal N}\).
Choi, Ji Young, DeAlba, Luz, Hogben, Leslie, Kivunge, Benard, Nordstrom, Sandra, Shedenhelm, Mike   +5 more
openaire   +3 more sources

Going viral − Virus‐targeting nanobodies for research, diagnostics and therapy

FEBS Letters, EarlyView.
The increasing prevalence of viral diseases represents a major threat for global human health. Nanobodies, small binding fragments derived from camelid heavy‐chain antibodies, offer versatile tools for viral research, diagnostics, and antiviral therapy.
Domenic Ebert, Ulrich Rothbauer
wiley   +1 more source

Neutrosophic Completion Technique for Incomplete Higher-Order AHP Comparison Matrices

Mathematics, 2021
After the recent establishment of the Sustainable Development Goals and the Agenda 2030, the sustainable design of products in general and infrastructures in particular emerge as a challenging field for the development and application of multicriteria ...
Ignacio J. Navarro, José V. Martí, Víctor Yepes   +2 more
doaj   +1 more source

Comparing the paths of Hedgehog release in artificial and natural settings

FEBS Letters, EarlyView.
Hh morphogens require solubilization factors to overcome their tight association with the plasma membrane and signal to distant cells, but the precise functions of these factors are controversial. Here, we use published in vivo observations as the most relevant evidence to test their suggested functions and discuss contradictions and gaps between in ...
Janna Puschmann, Kay Grobe
wiley   +1 more source

An Improved Alternating Direction Method of Multipliers for Matrix Completion

Foundations of Computing and Decision Sciences
Matrix completion is widely used in information science fields such as machine learning and image processing. The alternating direction method of multipliers (ADMM), due to its ability to utilize the separable structure of the objective function, has ...
Yan Xihong, Zhang Ning, Li Hao
doaj   +1 more source