Results 51 to 60 of about 2,827,443 (335)

Minimum weight design of trusses

open access: yesApplied Mathematical Modelling, 1983
Abstract A method to find the minimum weight design of steel trusses under multiple loading conditions and subject to stress and side constraints is presented. The problem is first simplified by replacing the ‘separable’ nonlinear stress constraints by their polygonal approximations.
openaire   +2 more sources

Regional Frequency Analysis of Low Flow in Parts of the Northern Karun River Basin in Chaharmahal and Bakhtiari Province [PDF]

open access: yesمحیط زیست و مهندسی آب, 2019
Hydrological droughts reduce groundwater and surface water, lakes and rivers. The purpose of the present study was to analyze the minimum regional flow frequency in parts of the northern Karun basin in Chaharmahal and Bakhtiari province. For this purpose,
Afshin Honarbakhsh   +3 more
doaj   +1 more source

Evolutionary interplay between viruses and R‐loops

open access: yesFEBS Letters, EarlyView.
Viruses interact with specialized nucleic acid structures called R‐loops to influence host transcription, epigenetic states, latency, and immune evasion. This Perspective examines the roles of R‐loops in viral replication, integration, and silencing, and how viruses co‐opt or avoid these structures.
Zsolt Karányi   +4 more
wiley   +1 more source

Estimating the weight of metric minimum spanning trees in sublinear time [PDF]

open access: yes, 2008
In this paper we present a sublinear-time $(1+\varepsilon)$-approximation randomized algorithm to estimate the weight of the minimum spanning tree of an $n$-point metric space. The running time of the algorithm is $\widetilde{\mathcal{O}}(n/\varepsilon^{\
Artur Czumaj   +2 more
core   +2 more sources

From omics to AI—mapping the pathogenic pathways in type 2 diabetes

open access: yesFEBS Letters, EarlyView.
Integrating multi‐omics data with AI‐based modelling (unsupervised and supervised machine learning) identify optimal patient clusters, informing AI‐driven accurate risk stratification. Digital twins simulate individual trajectories in real time, guiding precision medicine by matching patients to targeted therapies.
Siobhán O'Sullivan   +2 more
wiley   +1 more source

5-Stars of Low Weight in Normal Plane Maps with Minimum Degree 5

open access: yesDiscussiones Mathematicae Graph Theory, 2014
It is known that there are normal plane maps M5 with minimum degree 5 such that the minimum degree-sum w(S5) of 5-stars at 5-vertices is arbitrarily large.
Borodin Oleg V.   +2 more
doaj   +1 more source

A study on minimum weight design of vertical corrugated bulkheads for chemical tankers

open access: yesInternational Journal of Naval Architecture and Ocean Engineering, 2018
Corrugated bulkhead has been adopted for cargo tank bulkheads of commercial vessels such as bulk carriers, product oil carriers and chemical tankers.
Sang-Hoon Shin, Dae-Eun Ko
doaj   +1 more source

An improved performance of greedy heuristic solutions for a bi-criteria mixture packaging problem of two types of items with bounded weights

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing, 2020
In this paper, we treat a lexicographic bi-criteria combinatorial optimization model of mixture packaging of two types of items, which arises in actual food packing systems, so-called multi-head weighers.
Yoshiyuki KARUNO, Oki NAKAHAMA
doaj   +1 more source

A sharp threshold for minimum bounded-depth and bounded-diameter spanning trees and Steiner trees in random networks

open access: yes, 2011
In the complete graph on n vertices, when each edge has a weight which is an exponential random variable, Frieze proved that the minimum spanning tree has weight tending to zeta(3)=1/1^3+1/2^3+1/3^3+... as n goes to infinity.
Angel, Omer   +2 more
core   +1 more source

Minimum Weight Flat Antichains of Subsets

open access: yes, 2020
Building on classical theorems of Sperner and Kruskal-Katona, we investigate antichains $\mathcal F$ in the Boolean lattice $B_n$ of all subsets of $[n]:=\{1,2,\dots,n\}$, where $\mathcal F$ is flat, meaning that it contains sets of at most two ...
Griggs, Jerrold R.   +4 more
core   +1 more source

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