2000]. The simulations were conducted using parameters consistent with the ionospheric conditions found at altitudes from 105 km to 110 km with data taken from the IRI90 [Blitza, 1990] and CIRA72 [Rees, 1986] models for the ionosphere and neutral atmosphere with collision frequencies from Banks and Kockarts. (bu.edu)
Analyses2
Finite element analyses and simulations of sheet metal forming processes Jaroslav Mackerle 2004-12-01 00:00:00 Sheet metal forming is a process of shaping thin sheets of metal by applying pressure through male or female dies or both. (deepdyve.com)
We present the first computer simulations and analyses of the plasma dynamics of meteor trails. (bu.edu)
Numerical simulation2
The numerical simulation of damage using phenomenological models on the macroscale was state of the art for many decades. (uni-weimar.de)
Today, multiphase models with several million degrees of freedom enable for the numerical simulation of micro-damage phenomena in naturally heterogeneous materials. (uni-weimar.de)
Computational6
Computer simulations have become a useful tool for the mathematical modeling of many natural systems in physics (computational physics), astrophysics, climatology, chemistry, biology and manufacturing, as well as human systems in economics, psychology, social science, health care and engineering. (wikipedia.org)
Because of the computational cost of simulation, computer experiments are used to perform inference such as uncertainty quantification. (wikipedia.org)
Several values of the density of the slag are considered, and their effect on the global mass balance and slag average volume fraction on the sidewalls of the converter is studied using isothermal, two-dimensional transient computational fluid dynamics simulations. (hindawi.com)
On the other hand, some numerical studies of gaseous jets impinging on a liquid surface are reported using computational fluid dynamics simulations [ 8 - 10 ]. (hindawi.com)
Recently, two studies [ 11 , 12 ] by some of the authors of the present work were reported on the simulation of the slag splashing phenomenon using computational fluid dynamics, considering the dimensions of actual industrial converters and the influence of properties of molten slag. (hindawi.com)
In this work the influence of the slag density on the slag splashing process is analyzed using computational fluid dynamics simulations. (hindawi.com)
Processes4
Values output for the purpose by other simulations, models, or processes. (wikipedia.org)
Multi-agent Simulation as a Tool for Studying Emergent Processes in Societies Alexis Drogoul and Jacques Ferber 7. (routledge.com)
Virtual-Tissue ( VT ) simulations are increasingly important tools for understanding how complex multi-scale interactions among biochemical networks, cells, microenvironments, tissues, organs and the whole-body result in normal or disease processes. (nih.gov)
19971
In 1997, a desert-battle simulation of one force invading another involved the modeling of 66,239 tanks, trucks and other vehicles on simulated terrain around Kuwait, using multiple supercomputers in the DoD High Performance Computer Modernization Program. (wikipedia.org)
Build a simulation1
Hi everybody, It took a while, but I finally succeeded to build a simulation that accounts for acceleration between two inline particles, and I also succeeded to apply it to four particles where the light they exchange also travels sideways to the motion. (thenakedscientists.com)
Equations2
A computer model is the algorithms and equations used to capture the behavior of the system being modeled. (wikipedia.org)
Computer simulation is the process of mathematical modelling, performed on a computer, which is designed to predict the behaviour of, or the outcome of, a real-world or physical system. (wikipedia.org)
The scale of events being simulated by computer simulations has far exceeded anything possible (or perhaps even imaginable) using traditional paper-and-pencil mathematical modeling. (wikipedia.org)
Adds Grace Peng, Ph.D., director of the NIBIB program in Mathematical Modeling, Simulation, and Analysis, "Dr. Bluestein and his colleagues have been pioneers in combining mathematical modeling and experimental techniques to design and make real improvements in devices used to treat cardiovascular disorders. (nih.gov)
Their work is an outstanding example of how mathematical modeling and simulation approaches can accelerate the development and increase the reliability of medical treatments and devices that are life-saving for thousands of patients with serious diseases. (nih.gov)
Molecular2
and the Blue Brain project at EPFL (Switzerland), begun in May 2005 to create the first computer simulation of the entire human brain, right down to the molecular level. (wikipedia.org)
In this paper, we perform all atomic molecular dynamics simulations of the interaction between the SARS-CoV-2 trimeric glycoprotein spike and surfaces of materials. (icmab.es)
Widely2
The external data requirements of simulations and models vary widely. (wikipedia.org)
I will also present example of how rigorous modeling workflows, implemented in widely used tissue simulation environment (CompuCell3D) led to the construction of the mechanistic model that was used by clinicians to identify key mechanisms responsible for cyst formation in Polycystic Kidney Disease. (nih.gov)
Shows3
Data analysis of roof bolter simulations shows that the speed of the boom arm is the most important factor in determining the risk of an operator making contact. (cdc.gov)
Simulating Societies shows how computer simulations can help to clarify theoretical approaches, contribute to the evaluation of alternative theories, and illuminate one of the major issues of the social sciences: how social phenomena can "emerge" from individual action. (routledge.com)
1973]. Figure 1 shows simulations of meteor trails with axis perfectly aligned with the geomagnetic field. (bu.edu)
Density3
Vector electric field (E) in mV/m, and the density ratio of the trail plasma to the background density ntrail/ nbackground in a log scale at three different times during the simulation. (bu.edu)
Panels (a) are the initial stages of the simulation, panels (b) are at 1 ms and show that the GDFB has already developed strong ripples in the trail density. (bu.edu)
Density ratio vs. time (ms) for the simulation using 105 km altitude parameters. (bu.edu)
Models4
For some, the input might be just a few numbers (for example, simulation of a waveform of AC electricity on a wire), while others might require terabytes of information (such as weather and climate models). (wikipedia.org)
The authors discuss how simulation models can be constructed using recently developed artificial intelligence techniques and they consider the methodological issues involved in using such models for theory development, testing and experiment. (routledge.com)
This paper describes computer models of three interventions used for treating refractory pulmonary hypertension (RPH). (nyu.edu)
We are able to test the valves in the early stages of development using computer models and with mechanical devices that mimic the heart pumping blood through the valve," said Bluestein. (nih.gov)
Parameters1
We don't know exactly what parameters were used to create this simulation, like speed or how wide the pit is, but do we really need to get all scientific here? (ebaumsworld.com)
Present2
In this paper, we present a multi-resolution simulation method based on the finite-difference time-domain formulation to model the transcranial propagation of acoustic waves from a single-element transducer (250 kHz). (nih.gov)
To better understand the evolution of plasma columns we present hybrid plasma simulations that have revealed a number of previously unknown dynamics. (bu.edu)
Test2
Hi everybody, I'm actually trying to make a simulation to test the equivalence principle, and I fell on a an unexpected information about that principle on PF . (thenakedscientists.com)
Our test systems and computer simulations allow us to evaluate a polymer valve and identify specific structural issues affecting performance. (nih.gov)
Systems2
Computer simulation is often used as an adjunct to, or substitute for, modeling systems for which simple closed form analytic solutions are not possible. (wikipedia.org)
Because of this variety, and because diverse simulation systems have many common elements, there are a large number of specialized simulation languages. (wikipedia.org)
Values1
While it is easy for computers to read in values from text or binary files, what is much harder is knowing what the accuracy (compared to measurement resolution and precision) of the values are. (wikipedia.org)
Social science2
This is certainly the case for the subject of this book, originally published in 1994, which explores the contribution that computer-based modelling and artificial intelligence can make to understanding fundamental issues in social science. (routledge.com)
The introductory chapters situate the book within social science, and suggest why the time was ripe for significant progress, before defining basic terminology, showing how simulation has been used to theorize about organizations, and indicating through examples some of the fundamental issues involved in simulation. (routledge.com)
Research1
The simulations used in this research are some of the most detailed of their kind, operating at the highest resolution of any simulation run to study the Moon's origins or other giant impacts. (ebaumsworld.com)
Study1
It offered an essential introduction to simulation for social scientists and it provided case study applications for computer scientists interested in the latest advances in the burgeoning area of distributed artificial intelligence (DAI) at the time. (routledge.com)
Model4
Simulation of a system is represented as the running of the system's model. (wikipedia.org)
Simulation, therefore, is the process of running a model. (wikipedia.org)
Computer simulation developed hand-in-hand with the rapid growth of the computer, following its first large-scale deployment during the Manhattan Project in World War II to model the process of nuclear detonation. (wikipedia.org)
Researchers successfully developed a three-dimensional computer model that uses virtual human simulation software as the primary means to gather contact data when the boom arm touches the operator's hand, arm, head, or leg. (cdc.gov)
Time1
Because usability issues are simply ignored or, at best, never addressed properly, tools developed to date have a steep learning curve and assume that a motivated modeler will invest the time required to learn the internals of the simulation engine and will develop routines specific for the task at hand on an ad hoc basis. (nih.gov)
Languages1
An overview of the languages devised especially for programming computer simulations developed since 1959. (rand.org)
Program1
The laws of physics that govern everything in the universe also resemble computer code lines that a simulation would follow in the execution of the program. (yahoo.com)
Scale2
Computer simulations are realized by running computer programs that can be either small, running almost instantly on small devices, or large-scale programs that run for hours or days on network-based groups of computers. (wikipedia.org)
He leads CompuCell3D projects ( www.compucell3d.org ) - a multi-cell, multi-scale Virtual Tissue simulation platform. (nih.gov)
Entire2
This leads to the extraordinary possibility that our entire universe might in fact be a computer simulation. (yahoo.com)
Physicist Seth Lloyd from the Massachusetts Institute of Technology in the US took the simulation hypothesis to the next level by suggesting that the entire universe could be a giant quantum computer . (yahoo.com)
Point1
That's because an advanced civilisation should reach a point where their technology is so sophisticated that simulations would be indistinguishable from reality, and the participants would not be aware that they were in a simulation. (yahoo.com)
Page1
Open the four particles' simulation again and have a look at the explanations that I added at the bottom of the page. (thenakedscientists.com)