Results 41 to 50 of about 2,779,394 (268)

Structural optimization of the large structure with stiffeners by hybrid genetic algorithms

open access: yesNihon Kikai Gakkai ronbunshu, 2015
An optimization technique using the hybrid GA for large structures in which a lot of stiffeners are attached is proposed in this paper. The object function is the mass of structure and the design variables are the number and the position of stiffeners ...
Ryota NONAMI   +2 more
doaj   +1 more source

Ultra-low-frequency multi-broadband and vibration suppression mechanism of innovative star-shaped hybrid metamaterials

open access: yesMaterials & Design, 2023
Metamaterials with low-frequency band gap have always been the focus of research. For this reason, many researchers have proposed many structural design schemes. In this paper, an innovative star-shaped hybrid metamaterial structure is proposed. Based on
Hong-yun Yang   +10 more
doaj   +1 more source

Large Scale Structure of the Universe [PDF]

open access: yesSymposium - International Astronomical Union, 1997
How is the universe organized on large scales? How did this structure evolve from the unknown initial conditions of a rather smooth early universe to the present time? The answers to these questions will shed light on the cosmology we live in, the amount, composition and distribution of matter in the universe, the initial spectrum of density ...
openaire   +3 more sources

Connectivity and Structure in Large Networks [PDF]

open access: yes, 2016
Graph models play a central role in the description of real life complex networks. They aim at constructing graphs that describe the structure of real systems. The resulting graphs, in most cases, are random or random-like; so it is not surprising that there is a large literature on various classes of random graphs and networks.
András Faragó, Rupei Xu
openaire   +2 more sources

Semiclassical Gravity and Large-Scale Structure [PDF]

open access: yesAstroparticle Physics, 1995
Major changes, one figure added, several points clarified.
Bertoni, C.   +4 more
openaire   +2 more sources

Venous Thromboembolism in Pediatric Bone Sarcoma Patients: A 10‐Year, Single‐Institution Experience Encompassing the COVID‐19 Pandemic

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Osteosarcoma (OS) and Ewing sarcoma (EWS) are the most common primary bone cancers in children, but acute thrombosis is poorly characterized in this population. Our study evaluated the rates of venous thromboembolism (VTE) and associated risk factors in pediatric patients with bone sarcomas treated over a 10‐year period encompassing
Sarah Kappa   +8 more
wiley   +1 more source

Optimization of vibration characteristics and directional propagation of plane waves in branching ligament structures of wind models

open access: yesResults in Physics, 2023
To achieve multi-frequency vibration suppression and wave propagation modulation, eight branching ligament structures for wind models are proposed. Using lattice theory, dynamical model and finite element release method, the structures are verified to ...
Xiao-feng Li   +10 more
doaj   +1 more source

Serological Benefit of SARS‐CoV‐2 Vaccination Relative to Infection in Children With Acute Lymphoblastic Leukemia

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Children with acute lymphoblastic leukemia (ALL) are at risk of severe outcomes from SARS‐CoV‐2 (SCV2). In the post‐pandemic context, where most children have been infected with SCV2, there are limited data on whether vaccination remains beneficial in children with ALL.
Janna R. Shapiro   +11 more
wiley   +1 more source

Time Toxicity in Wilms Tumor: Quantifying the Burden of Healthcare Interaction in the First Year After Diagnosis

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Wilms tumor (WT) treatment imposes a significant time burden on patients and their families. Time toxicity is a patient‐centered metric that quantifies the burden of healthcare interaction. We sought to define time toxicity in the first year after diagnosis of WT and hypothesized that it would increase as tumor stage and treatment ...
Caleb Q. Ashbrook   +6 more
wiley   +1 more source

Knowledge-Driven Method for Constructing TBM Rock-Breaking Indexes

open access: yesApplied Sciences
As tunnel construction advances toward greater depths and lengths, full-face tunnel boring machines (TBMs) have become the preferred method for large-scale excavation.
Haokai Sun   +3 more
doaj   +1 more source

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