Results 91 to 100 of about 536,987 (307)

A goal-programming model applied to the EMS system at Riyadh City, Saudi Arabia [PDF]

open access: yes, 2003
An extension to models for the Maximal Covering Location Problem (MCLP) is applied to the Saudi Arabian Red Crescent Society (SARCS), Riyadh City, Saudi Arabia. The purpose is to identify the optimal locations of emergency medical service (EMS) stations.
Rand, G K, Alsalloum, O I
core  

Experimental Evaluation of 100Cr6 Steel Microindented Surfaces Under Lubricated Nonconformal Point Contacts

open access: yesAdvanced Engineering Materials, EarlyView.
The tribological behavior of 100Cr6 steel spheres textured via Vickers microindentation is evaluated under lubricated sliding by varying both dimple size and density. Fine and dense textures significantly reduce friction across all lubrication regimes, while large dimples increase it.
Farideh Davoodi   +3 more
wiley   +1 more source

Air‐Pressure–Actuated Vibroacoustic Metamaterial With Tunable Bandgap: Design, Modeling, and Characterization

open access: yesAdvanced Engineering Materials, EarlyView.
This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal   +2 more
wiley   +1 more source

Determining When Gurobi Generates Optimal Solutions for the Partial Coverage Weighted Set Covering Problem

open access: yesComputation
The partial coverage weighted set covering problem (PCWSCP) allows for less than 100% of the rows to be satisfied in a weighted set covering problem (WSCP).
Myung Soon Song   +3 more
doaj   +1 more source

Evaluating Energy Absorption Performance of Filled Lattice Structures

open access: yesAdvanced Engineering Materials, EarlyView.
Maximum stress must be considered to robustly evaluate energy absorber designs. This approach was applied to compare all types of absorbers in a single Ashby diagram and determine the utility of filling lattice voids with a second material. High‐performance fillers can improve the performance of lattices that are limited by buckling or catastrophic ...
Christian Bonney   +2 more
wiley   +1 more source

Optimization for Locating Emergency Medical Service Facilities: A Case Study for Health Planning from China

open access: yesRisk Management and Healthcare Policy, 2021
Yufan Deng,1,2 Yumeng Zhang,1,2 Jay Pan1,2 1HEOA Group, West China School of Public Health and West China Fourth Hospital, Sichuan University, Chengdu, Sichuan, People’s Republic of China; 2Institute for Healthy Cities and West China Research ...
Deng Y, Zhang Y, Pan J
doaj  

Field Report from Collaborative Research Center 1625: Heterogeneous Research Data Management Using Ontology Representations

open access: yesAdvanced Engineering Materials, EarlyView.
A unified research data management framework for heterogeneous materials data is presented. The system integrates multimodal datasets using ontologies and knowledge graphs, enabling interoperability and FAIR (findable, accessible, interoperable, reusable) data principles. By linking data across scales and workflows, it supports reproducible, Artifitial
Doaa Mohamed   +6 more
wiley   +1 more source

Approximating the dense set-cover problem

open access: yesJournal of Computer and System Sciences, 2004
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Reuven Bar-Yehuda, Zehavit Kehat
openaire   +1 more source

Problem set 10 [PDF]

open access: yes, 2012
This article introduces a regular problem section in the Australian Senior Mathematics Journal. It notes that the section aims to give readers an opportunity to exchange interesting mathematical problems and solutions.
Yevdokimov, Oleksiy
core  

A Novel SAT-Based Approach to the Task Graph Cost-Optimal Scheduling Problem [PDF]

open access: yes, 2010
The Task Graph Cost-Optimal Scheduling Problem consists in scheduling a certain number of interdependent tasks onto a set of heterogeneous processors (characterized by idle and running rates per time unit), minimizing the cost of the entire process. This
Sergio Nocco   +3 more
core   +1 more source

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