Results 61 to 70 of about 148,619 (281)

Свойство выпуклости взаимных мультифрактальных размерностей [PDF]

open access: yesПроблемы анализа, 2010
В работе установлено свойство выпуклости взаимной мультифрактальной упаковочной размерности подмножества пересечения носителей вероятностных борелевских мер μ и v.
Светова Н. Ю.
doaj  

Structural insights into an engineered feruloyl esterase with improved MHET degrading properties

open access: yesFEBS Letters, EarlyView.
A feruloyl esterase was engineered to mimic key features of MHETase, enhancing the degradation of PET oligomers. Structural and computational analysis reveal how a point mutation stabilizes the active site and reshapes the binding cleft, expading substrate scope.
Panagiota Karampa   +5 more
wiley   +1 more source

Sphere packings in Euclidean space with forbidden distances

open access: yesForum of Mathematics, Sigma
In this paper, we study the sphere packing problem in Euclidean space where we impose additional constraints on the separations of the center points. We prove that any sphere packing in dimension $48$ , with spheres of radii r, such that no two ...
Felipe Gonçalves, Guilherme Vedana
doaj   +1 more source

An Effective Corner Increment-Based Algorithm for the Two-Dimensional Strip Packing Problem

open access: yesIEEE Access, 2018
The 2-D strip packing problem is an NP-hard combinatorial optimization problem. Given a strip with fixed width and infinite height, the aim of strip packing is to pack a set of rectangles with known widths and heights into the strip such that the used ...
Zhen Chen, Jianli Chen
doaj   +1 more source

A note on the hitting probabilities of random covering sets

open access: yes, 2013
Let $E=\limsup\limits_{n\to\infty}(g_n+\xi_n)$ be the random covering set on the torus $\mathbb{T}^d$, where $\{g_n\}$ is a sequence of ball-like sets and $\xi_n$ is a sequence of independent random variables uniformly distributed on $\T^d$.
Li, Bing, Suomala, Ville
core   +1 more source

Packing measures and dimensions on cartesian products [PDF]

open access: yesPublicacions Matemàtiques, 2013
Packing measures and Hewitt-Stromberg measures on products of metric spaces are investigated. New product inequalities for packing and lower packing dimensions are esatblished and used to solve a problem of Hu and Taylor regarding packing dimension.
openaire   +7 more sources

A methionine‐lined active site governs carbocation stabilization and product specificity in a bacterial terpene synthase

open access: yesFEBS Letters, EarlyView.
This study reveals a unique active site enriched in methionine residues and demonstrates that these residues play a critical role by stabilizing carbocation intermediates through novel sulfur–cation interactions. Structure‐guided mutagenesis further revealed variants with significantly altered product profiles, enhancing pseudopterosin formation. These
Marion Ringel   +13 more
wiley   +1 more source

In vitro models of cancer‐associated fibroblast heterogeneity uncover subtype‐specific effects of CRISPR perturbations

open access: yesMolecular Oncology, EarlyView.
Development of therapies targeting cancer‐associated fibroblasts (CAFs) necessitates preclinical model systems that faithfully represent CAF–tumor biology. We established an in vitro coculture system of patient‐derived pancreatic CAFs and tumor cell lines and demonstrated its recapitulation of primary CAF–tumor biology with single‐cell transcriptomics ...
Elysia Saputra   +10 more
wiley   +1 more source

Packing Multidimensional Spheres in an Optimized Hyperbolic Container

open access: yesMathematics
The problem of packing multidimensional spheres in a container defined by a hyperbolic surface is introduced. The objective is to minimize the height of the hyperbolic container under non-overlapping and containment conditions for the spheres ...
Yuriy Stoyan   +6 more
doaj   +1 more source

Use of genetic algorithms for solving problems of optimal cutting

open access: yesITM Web of Conferences, 2016
Cutting and packing problem is one of the most common optimization problem. Even a small space or material savings allow obtaining substantial advantages on an industrial scale. This paper proposes the genetic algorithm to solve this problem. It includes
Sergievskiy Maxim, Syroezhkin Sergey
doaj   +1 more source

Home - About - Disclaimer - Privacy