Results 21 to 30 of about 745,809 (314)

Modelling wildland fire propagation by tracking random fronts [PDF]

open access: yesNatural Hazards and Earth System Sciences, 2014
Wildland fire propagation is studied in the literature by two alternative approaches, namely the reaction–diffusion equation and the level-set method.
G. Pagnini, A. Mentrelli
doaj   +1 more source

Evaluate the impact of COVID-19 prevention policies on supply chain aspects under uncertainty

open access: yesTransportation Research Interdisciplinary Perspectives, 2020
Supply chain operations are disrupted due to natural disasters or epidemics. In the recent period, the supply chain suffers from obstacles and major challenges that affect its stages directly due to the spread of the COVID-19 epidemic around the world ...
Mohamed Grida   +2 more
doaj   +1 more source

Integrated Waveform Design Based on UAV MIMO Joint Radar Communication

open access: yesInformation, 2023
The problem of orthogonal waveform construction in multiple input/multiple output (MIMO) radar communication integration greatly limits the realization of integration technology.
Hao Ma, Jun Wang, Xin Sun, Wenxin Jin
doaj   +1 more source

Towards Assessing Spread in Sets of Software Architecture Designs

open access: yes, 2023
Several approaches have recently used automated techniques to generate architecture design alternatives by means of optimization techniques. These approaches aim at improving an initial architecture with respect to quality aspects, such as performance, reliability, or maintainability.
Vittorio Cortellessa   +3 more
openaire   +2 more sources

Spread of balleans

open access: yesApplied General Topology, 2008
A ballean is a set endowed with some family of balls in such a way that a ballean can be considered as an asymptotic counterpart of a uniform topological space. We introduce and study a new cardinal invariant called the spread of a ballean. In particular,
Mahmoud Filali, Igor V. Protasov
doaj   +1 more source

Minimizing outbreak through targeted blocking for disease control: a community-based approach using super-spreader node identification

open access: yesScientific Reports, 2023
The COVID-19 pandemic has caused significant disruptions to the daily lives of individuals worldwide, with many losing their lives to the virus. Vaccination has been identified as a crucial strategy to combat the spread of a disease, but with a limited ...
Amir Sheikhahmadi   +2 more
doaj   +1 more source

Impact of human mobility and networking on spread of COVID-19 at the time of the 1st and 2nd epidemic waves in Japan: An effective distance approach.

open access: yesPLoS ONE, 2022
BackgroundThe influence of human mobility to the domestic spread of COVID-19 in Japan using the approach of effective distance has not yet been assessed.MethodsWe calculated the effective distance between prefectures using the data on laboratory ...
Yasuhiro Nohara, Toshie Manabe
doaj   +1 more source

Epidemiology of coronaviruses, genetics, vaccines, and scenario of current pandemic of coronavirus diseases 2019 (COVID-19): a fuzzy set approach

open access: yesHuman Vaccines & Immunotherapeutics, 2021
Human coronaviruses (HCoVs) are associated with a range of respiratory complications. In the last two decades, three major outbreaks have been reported due to HCoVs including the current pandemic.
Fazal Mehmood Khan   +5 more
doaj   +1 more source

Artificial neural network-based heuristic to solve COVID-19 model including government strategies and individual responses

open access: yesInformatics in Medicine Unlocked, 2022
The current work aims to design a computational framework based on artificial neural networks (ANNs) and the optimization procedures of global and local search approach to solve the nonlinear dynamics of the spread of COVID-19, i.e., the SEIR-NDC model ...
Thongchai Botmart   +6 more
doaj   +1 more source

Irreversible k-threshold conversion number of some graphs [PDF]

open access: yesArab Journal of Mathematical Sciences
Purpose – This paper aims to study Irreversible conversion processes, which examine the spread of a one way change of state (from state 0 to state 1) through a specified society (the spread of disease through populations, the spread of opinion through ...
Ramy Shaheen, Suhail Mahfud, Ali Kassem
doaj   +1 more source

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