Results 161 to 170 of about 649,170 (367)
Positive Definiteness of the Sample Covariance Matrix of Multi-poisson Distribution [PDF]
Jianqun Miao, Jianq Wu
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Abstract Background Diffuse large B‐cell lymphoma (DLBCL) is the most common subtype of aggressive non‐Hodgkin's lymphoma with distinct clinical and molecular heterogeneity. DLBCL that arises in extranodal organs is particularly linked to poor prognosis. This study aimed to determine the clinical and molecular characteristics of extranodal involvement (
Si‐Yuan Chen+46 more
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Preconditioned Lanczos Methods for the Minimum Eigenvalue of a Symmetric Positive Definite Toeplitz Matrix [PDF]
Michael K. Ng
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Biodegradable gelatin‐based gel blends reinforced with SiO₂ and nanoclay exhibit enhanced mechanical strength, thermal stability, and ion‐mediated structural integrity. These metal‐free, eco‐friendly materials open new opportunities for sustainable packaging.
Miroslawa Prochon+3 more
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We characterized weighted spectral geometric means (SGM) of positive definite matrices in terms of certain matrix equations involving metric geometric means (MGM) $ \sharp $ and semi-tensor products $ \ltimes $. Indeed, for each real number $ t $ and two
Arnon Ploymukda +2 more
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The boundary‐regulated distributed parameter system of an axial dispersion tubular reactor with delayed recycle is showcased, along with the optimal observer‐based control strategy developed using a late‐lumping method for its stabilization. Abstract The optimal control of an axial tubular reactor with a recycle stream is addressed as a key type of ...
Behrad Moadeli+2 more
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Weighing risks against GHG reduction benefits in emerging green technologies
Abstract Green technologies represent promising strategies for mitigating carbon emissions and combating global warming. However, their implementation in civil and industrial applications is not without risks, as intrinsic uncertainties and latent safety concerns can threaten their effective deployment.
Federica Tamburini+3 more
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A two-sided iterative method for computing positive definite solutions of a nonlinear matrix equation [PDF]
Salah M. El‐Sayed
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Abstract Let (Mn,g)$(M^n,g)$ be a complete Riemannian manifold which is not isometric to Rn$\mathbb {R}^n$, has nonnegative Ricci curvature, Euclidean volume growth, and quadratic Riemann curvature decay. We prove that there exists a set G⊂(0,∞)$\mathcal {G}\subset (0,\infty)$ with density 1 at infinity such that for every V∈G$V\in \mathcal {G}$ there ...
Gioacchino Antonelli+2 more
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Abstract We analyse and clarify the finite‐size scaling of the weakly‐coupled hierarchical n$n$‐component |φ|4$|\varphi |^4$ model for all integers n≥1$n \ge 1$ in all dimensions d≥4$d\ge 4$, for both free and periodic boundary conditions. For d>4$d>4$, we prove that for a volume of size Rd$R^{d}$ with periodic boundary conditions the infinite‐volume ...
Emmanuel Michta+2 more
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