Results 31 to 40 of about 2,018,771 (302)

Dynamic models in fMRI [PDF]

open access: yesMagnetic Resonance in Medicine, 2000
Most statistical methods for assessing activated voxels in fMRI experiments are based on correlation or regression analysis. In this context the main assumptions are that the baseline can be described by a few known basis-functions or variables and that the effect of the stimulus, i.e. the activation, stays constant over time. As these assumptions are
Gössl, C., Auer, D., Fahrmeir, L.
openaire   +3 more sources

Dynamic Modeling of the Electric Transportation Network [PDF]

open access: yes, 2005
We introduce a model for the dynamic self-organization of the electric grid. The model is characterized by a conserved magnitude, energy, that can travel following the links of the network to satisfy nodes' load. The load fluctuates in time causing local
Eguíluz, Víctor M.   +2 more
core   +2 more sources

Modeling Blog Dynamics

open access: yesProceedings of the International AAAI Conference on Web and Social Media, 2009
How do blogs produce posts? What local, underlying mechanisms lead to the bursty temporal behaviors observed in blog networks? Earlier work analyzed network patterns of blogs and found that blog behavior is bursty and often follows power laws in both topological and temporal characteristics. However, no intuitive and realistic model has
Michaela Goetz   +3 more
openaire   +2 more sources

A New Efficient Step-Up Boost Converter with CLD Cell for Electric Vehicle and New Energy Systems

open access: yesEnergies, 2020
An increase in demand for renewable energy resources, energy storage technologies, and electric vehicles requires high-power level DC-DC converters. The DC-DC converter that is suitable for high-power conversion applications (i.e., resonant, full-bridge ...
Muhammad Zeeshan Malik   +6 more
doaj   +1 more source

Influence of Surface Reflection (Albedo) in Simulating the Sun Drying of Paddy Rice

open access: yesApplied Sciences, 2020
The sun drying of agricultural products is a complicated process involving heat transfer, mass transfer, and variable weather conditions. Surface reflection (albedo), a crop’s radiative property, plays an essential role in energy balance, and ...
Ana Salvatierra-Rojas   +2 more
doaj   +1 more source

Vibration Modeling and Analysis of a Flexible 3-PRR Planar Parallel Manipulator Based on Transfer Matrix Method for Multibody System

open access: yesMachines, 2023
This paper presents the vibration model of a 3-prismatic–revolute–revolute (PRR) planar parallel manipulator (PPM) with three flexible intermedia links, utilizing the linear transfer matrix method for multibody systems (MSTMM).
Guoning Si   +4 more
doaj   +1 more source

Dynamic Variational Autoencoders for Visual Process Modeling

open access: yes, 2020
This work studies the problem of modeling visual processes by leveraging deep generative architectures for learning linear, Gaussian representations from observed sequences.
Sagel, Alexander, Shen, Hao
core   +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

Drought-Induced Amplification of Saint Louis encephalitis virus, Florida

open access: yesEmerging Infectious Diseases, 2002
We used a dynamic hydrology model to simulate water table depth (WTD) and quantify the relationship between Saint Louis encephalitis virus (SLEV) transmission and hydrologic conditions in Indian River County, Florida, from 1986 through 1991, a period ...
Jeffrey Shaman   +2 more
doaj   +1 more source

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