Results 101 to 110 of about 40,368 (229)

Prevalence of low‐level viremia and its association with virological failure among adolescents living with HIV in Eastern Cape, South Africa

open access: yesHIV Medicine, EarlyView.
Abstract Objectives Low‐level viremia (LLV) has been associated with an increased risk of virological failure among adults on antiretroviral therapy (ART). However, evidence on the clinical implications of LLV among adolescents living with HIV remains limited.
Zea Leon   +7 more
wiley   +1 more source

Metaheuristic approaches for the quartet method of hierarchical clustering [PDF]

open access: yes, 2008
Given a set of objects and their pairwise distances, we wish to determine a visual representation of the data. We use the quartet paradigm to compute a hierarchy of clusters of the objects.
Consoli, S   +4 more
core  

An efficient variable neighborhood search approach for the facility location problem with the limited choice rule

open access: yesInternational Transactions in Operational Research, EarlyView.
Abstract One of the most common problems in the expansion of a company consists of deciding the most appropriate locations for their facilities. This decision problem, known as the facility location problem, has been studied from different perspectives, considering a number of different constraints.
Enrique García‐Galán   +2 more
wiley   +1 more source

Early Fall Cover Cropping Trial [PDF]

open access: yes, 2014
Farmers are interested in expanding their cover crop options beyond winter rye. Species of interest include annual ryegrass, oats, vetch, winter pea, tillage radish, and canola.
Cummings, Erica   +5 more
core   +1 more source

Bridging the implementation gap in MCABC inventory management: from a taxonomy to practical archetypes

open access: yesInternational Transactions in Operational Research, EarlyView.
Abstract Despite increasing demands for resilient and sustainable supply chains, inventory management often relies on outdated single‐criterion analyses. While multi‐criteria ABC (MCABC) analyses provide a theoretically mature assessment of resilience‐sustainability‐benefit trade‐offs in inventory, their adoption remains limited due to fragmented ...
Lukas Grützner, Michael H. Breitner
wiley   +1 more source

A unified formulation for home healthcare routing and scheduling problems

open access: yesInternational Transactions in Operational Research, EarlyView.
Abstract Home Healthcare is an essential component of healthcare systems, where caregivers visit patients' homes to deliver services. While presenting advantages with respect to institutional care, such as being cost‐effective and alleviating family burdens, it presents challenges in scheduling and routing caregivers efficiently.
Sara Ceschia   +7 more
wiley   +1 more source

A formulation and a metaheuristic approach for the clustered vehicle routing problem with d‐relaxed priority rule

open access: yesInternational Transactions in Operational Research, EarlyView.
Abstract This paper investigates an extension of the vehicle routing problem in which, in addition to minimizing the distance traveled, the sequencing of customer visits is subject to precedence constraints that impose visiting priorities among customers.
Eduardo dos Santos Teixeira   +1 more
wiley   +1 more source

Combinatorial optimization and metaheuristics [PDF]

open access: yes, 2006
Today, combinatorial optimization is one of the youngest and most active areas of discrete mathematics. It is a branch of optimization in applied mathematics and computer science, related to operational research, algorithm theory and computational ...
Consoli, S, Darby-Dowman, K
core  

Freight distribution optimization by implementing the team orienteering problem with occasional drivers

open access: yesInternational Transactions in Operational Research, EarlyView.
Abstract This research evaluates the effectiveness of a hybrid crowdshipping system that integrates occasional drivers with traditional delivery services (OD+TD) to improve the efficiency of freight distribution. By implementing the team orienteering problem with occasional drivers model, we develop a mathematical model and an agile optimization ...
Alisson Garcia‐Herrera   +4 more
wiley   +1 more source

Vagus Nerve Stimulation in Drug-resistant Epilepsy: A Single-center Experience

open access: yesArchives of Epilepsy
Objective: Vagus nerve stimulation (VNS) has been increasingly used in recent years as an alternative treatment method for drug-resistant epilepsy (DRE). In this study, we aimed to analyze the data of patients diagnosed with DRE and treated with VNS, who
İnan Özdemir   +8 more
doaj   +1 more source

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