Results 41 to 50 of about 28,178,522 (404)

Modeling Population Growth in R with the biogrowth Package

open access: yesJournal of Statistical Software, 2023
The growth of populations is of interest in a broad variety of fields, such as epidemiology, economics or biology. Although a large variety of growth models are available in the scientific literature, their application usually requires advanced ...
Alberto Garre   +3 more
doaj   +1 more source

Dynamic modelling of Nonresponse in Business Surveys [PDF]

open access: yes, 2010
It is well-known that nonresponse affects the results of surveys and can even cause bias due to selectivities if it cannot be regarded as missing at random. In contrast to household surveys, response behaviour in business surveys has been examined rarely
Seiler, Christian
core   +3 more sources

Dynamic modelling and control of supercritical CO2 power cycle using waste heat from industrial processes

open access: yesFuel, 2019
Large amount of waste heat is available for recovery in industrial processes worldwide. However, significant proportion (up to 50%) of this thermal energy is released directly to the environment.
Olumide Olumayegun, Meihong Wang
semanticscholar   +1 more source

Dynamic modelling with events [PDF]

open access: yes, 1994
This paper focusses on the behavioural aspects of the IFO23 model, an extension of the semantic model IFO defined by S. Abiteboul and R. Hull. Its originality is in the formalization of complex events and their specification, which adopts semantics and syntax indentical to those of the structural part.
Maguelonne Teisseire   +2 more
openaire   +1 more source

Dynamic model abstraction [PDF]

open access: yesProceedings of the 28th conference on Winter simulation - WSC '96, 1996
While complex behavior can be generated through simple systems, as in chaotic and nonlinear systems, complex systems axe found where a systems study contains multiple physical objects and interactions. Through the use of hierarchy, we are able to simplify and organize the complex system.
Lee, Kangsun, Fishwick, Paul A.
openaire   +1 more source

Design and Analysis of a Lower Limb Loadbearing Exoskeleton

open access: yesActuators, 2022
In recent years, the lower limb exoskeleton has been more and more widely used in military, medical and other fields. In this paper, the muscle–bone model of the lower limb during the human walking process is analyzed, and a lower limb exoskeleton with ...
Qiying Su   +3 more
doaj   +1 more source

Liquid air energy storage (LAES) with packed bed cold thermal storage – From component to system level performance through dynamic modelling

open access: yes, 2017
Energy storage is more important today than ever. It has a key role in storing intermittent electricity from renewable sources – wind, solar and waves – enabling the decarbonisation of the electricity sector.
A. Sciacovelli, A. Vecchi, Yulong Ding
semanticscholar   +1 more source

A review of the experimental and numerical studies on the compression behavior of the additively produced metallic lattice structures at high and low strain rates

open access: yesDefence Technology
Recent advances in additive manufacturing have enabled the construction of metallic lattice structures with tailored mechanical and functional properties.
Muhammad Arslan Bin Riaz, Mustafa Güden
doaj   +1 more source

Modelling the Whole Profile Soil Organic Carbon Dynamics Considering Soil Redistribution under Future Climate Change and Landscape Projections over the Lower Hunter Valley, Australia

open access: yesLand, 2023
Soil organic carbon (SOC) storage and redistribution across the landscape (through erosion and deposition) are linked to soil physicochemical properties and can affect soil quality.
Yuxin Ma   +5 more
doaj   +1 more source

A New Hypersonic Wind Tunnel Force Measurement System to Reduce Additional Bending Moment and Avoid Time-Varying Stiffness

open access: yesSensors, 2022
In order to improve traditional hypersonic wind tunnel airframe/propulsion integrated aerodynamic testing technology for hypersonic vehicles, a new force measurement system called the aerodynamic force measuring support (AFMS) was designed.
Shichao Li   +3 more
doaj   +1 more source

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