Results 51 to 60 of about 7,998,614 (283)
Allotaxonometry and rank-turbulence divergence: a universal instrument for comparing complex systems
EPJ Data Science, 2023 Complex systems often comprise many kinds of components which vary over many orders of magnitude in size: Populations of cities in countries, individual and corporate wealth in economies, species abundance in ecologies, word frequency in natural language,
Peter Sheridan Dodds +9 more
doaj +1 more source
Pediatric Blood &Cancer, EarlyView.ABSTRACT Background Kaposiform lymphangiomatosis (KLA) is an aggressive complex lymphatic anomaly. Patients exhibit malformed lymphatic vessels and often develop hemorrhagic effusions and elevated angiopoietin‐2 (Ang‐2) levels. A somatic NRAS p.Q61R (NRASQ61R) mutation has been associated with KLA.
C. Griffin McDaniel +3 more
wiley +1 more source
Towards Eco-Efficient Production Planning: Stochastic Models Incorporating Quality Uncertainty and Environmental Impact [PDF]
E3S Web of ConferencesIn industrial production, balancing demand volatility and customer lead times remains a critical challenge. Traditional production planning often assumes all manufactured products meet quality standards; however, defective parts detected during ...
Taraa Chaymae +3 more
doaj +1 more source
Freight Time and Cost Optimization in Complex Logistics Networks
Complexity, 2020 The complexity of providing timely and cost-effective distribution of finished goods from industrial facilities to customers makes effective operational coordination difficult, yet effectiveness is crucial for maintaining customer service levels and ...
Egemen Sert +8 more
doaj +1 more source
A COVID-19 vaccination model for Aotearoa New Zealand
Scientific Reports, 2022 We develop a mathematical model to estimate the effect of New Zealand’s vaccine rollout on the potential spread and health impacts of COVID-19. The main purpose of this study is to provide a basis for policy advice on border restrictions and control ...
Nicholas Steyn +5 more
doaj +1 more source
Design Environments for Complex Systems [PDF]
, 2003 The paper describes an approach for modeling complex systems by hiding as much formal details as possible from the user, still allowing verification and simulation of the model.
Priami, Corrado
core
Pediatric Blood &Cancer, EarlyView.ABSTRACT Introduction Pulmonary dysfunction and sleep abnormalities are common in children with sickle cell disease (SCD) and are associated with worse clinical outcomes. Whether spirometry abnormalities are associated with polysomnography (PSG) findings remains unclear.
Ammar Saadoon Alishlash +4 more
wiley +1 more source
Onset of criticality in hyper-auxetic polymer networks
Nature Communications, 2022 Auxetic materials are characterized by a negative Poisson’s ratio - they become thicker when stretched. Here, authors reach the limit of auxetic behavior, known as hyper-auxetic, in polymer networks, hitting an unconventional mechanical critical point.
Andrea Ninarello +2 more
doaj +1 more source
Pediatric Blood &Cancer, EarlyView.ABSTRACT Background Families of children with cancer experience significant financial strain, even with universal healthcare. Indirect costs, such as productivity losses and non‐medical expenses, are rarely included in economic evaluations, and little is known about how effectively financial aid programmes alleviate this burden. Childhood brain tumours
Megumi Lim +8 more
wiley +1 more source
The Competing Two-Strain SIS Pairwise Approximation Model With Infection Age
IEEE Access, 2019 This paper studies a two-strain SIS pairwise approximation model with a competing mechanism and non-Markovian recovery process in which the recovery rate depends on infection age.
Juping Zhang +3 more
doaj +1 more source