Showing posts with label simulation. Show all posts
Showing posts with label simulation. Show all posts

2013-05-03

OpenWorm an Open-Source Virtual Worm

BBC News - Virtual worm project wriggles into life

The nematode worm Caenorhabditis elegans is one of the most widely studied creatures on Earth
Soon you could have an artificial creature living in your web browser.
Programmers and scientists have joined together to try to create a comprehensive computer model of the Caenorhabditis elegans nematode worm.

OpenWorm Is An Open-Source Virtual Worm, Accurate In Every Way | Popular Science

Elegant Elegans The OpenWorm 3D Browser iPhone app lets you peek into C. elegans at the cellular level. MetaCell, LLC
Predictive models are essential in engineering fields, but less common in biology, though accurate simulations of living organisms could help us understand disease, drug efficacy and neuroscience.

OpenWorm, a new open-source project devoted to creating a complete virtual model of a worm, aims to bring simulation into the living world by creating a digital organism--C. elegans, a nematode commonly used as a model organism in biology research.




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2013-04-20

The flow around the butterfly

The Mathematical Butterfly: Simulations Provide New Insights On Flight | Inside Science


The researchers ran three different simulations of this mathematical butterfly, and found that the insect used the forces from teensy whirlpools in the air created during each flap of its wings to create lift. They noticed that the butterfly's flight was bumpy as it moved through the air, with lots of ups and downs as it pushed itself forward. 
There were some surprises in the tiny flows of air surrounding the butterflies. "The flow around the butterfly is much more turbulent than expected," says Yokoyama.

The researchers surmised that the minute bumpiness of the air causes butterflies' signature flit, and also may help protect them against predators – the more they duck and weave, the harder it is to catch them. The research was published earlier this year in the journal Physics of Fluids. 

High speed video - Painted Lady butterfly (front) - YouTube



High speed video recorded at 3000 fps.
See www.jhuinsectflight.com for more information on Tiras Lin's research project at Johns Hopkins University.


Mathematical butterflies provide insight into how insects fly

Using data from observations of butterfly flight in wind tunnels, the researchers conducted three different types of simulations with their model that were defined by the position and attitude of the thorax: tethered (where the thorax is fixed), prescribed (where the thorax is programmed to move in an expected manner) and free-flight (where the thorax movement is unrestricted). They found that their mathematical butterfly did -- as predicted -- make use of the tiny, swirling vortices that form in the direction of travel during a downward flap, pushing air down and providing lift. However, they also observed that the flow around the butterfly is much more turbulent than expected. This turbulent flow triggers the complex trajectories characteristic to the flights of butterflies that may be one of the strategies by which the insects avoid predators.

Phys. Fluids (1994-Present) - Physics of Fluids

Aerodynamic forces and vortical structures in flapping butterfly's forward flight
Naoto Yokoyama, Kei Senda, Makoto Iima, and Norio Hirai
Phys. Fluids 25, 021902 (2013); http://dx.doi.org/10.1063/1.4790882 (24 pages)
Online Publication Date: 21 February 2013
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2012-05-06

The TL1 Motion Simulator with 180 Degree, Spherical Projector Screen



From Motion Simulation comes a very impressive simulator as the company has developed the TL1 in co-operation with the British Ariel Motor Company.

Ariel is known for their Ariel Atom sports car and the TL1 is no less extreme or innovative as it’s the world’s first portable 180-degree, spherical projector screen cockpit with multiple driving positions.


Motion Simulation | TL1


Total immersion without compromise

The TL1 simulator has been specifically designed from the ground up to bring a fresh and innovative approach to Racing, Flight and First-Person-Shooter Simulation.


Full wrap around screen


Professional standard projectors


Variable driving position






Motion Simulation TL1 on board - Touring Car - YouTube


Filmed at Gadget Show Live. Onboard footage from the Motion Simulation TL1 simulator, driving a V8 Touring car at Oulton Park. Motion Simulation's TL1 simulator includes the worlds first, portable 180 degree screen and multiple position cockpit


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2012-03-08

Black Hole Simulations

Black hole - Wikipedia, the free encyclopedia

A black hole is a region of spacetime from which nothing, not even light, can escape.[1] The theory of general relativity predicts that a sufficiently compact mass will deform spacetime to form a black hole. Around a black hole there is a mathematically defined surface called an event horizon that marks the point of no return. It is called "black" because it absorbs all the light that hits the horizon, reflecting nothing, just like a perfect black body in thermodynamics.[2] Quantum mechanics predicts that black holes emit radiation like a black body with a finite temperature. This temperature is inversely proportional to the mass of the black hole, making it difficult to observe this radiation for black holes of stellar mass or greater.

Simulated view of a black hole (center) in front of the Large Magellanic Cloud. Note the gravitational lensing effect, which produces two enlarged but highly distorted views of the Cloud. Across the top, the Milky Way disk appears distorted into an arc.
Simulation of gravitational lensing by a black hole, which distorts the image of a galaxy in the background


Inside Black Holes


This is not an artist's impression.
It is a general relativistic volume-rendering
of a super-computed simulation.


  • Journey into the simplest kind of black hole, a black hole with mass, but no charge and no spin — a Schwarzschild black hole.
  • Journey into and through a charged black hole — a Reissner-Nordström black hole. This one has a wormhole and a white hole connecting to a new universe.
  • How to understand black holes — a black hole is a waterfall of space.
  • How does a scene appear when you pass through it at near the speed of light? — The rules of 4-dimensional perspective.
  • How to find your way inside black holes — Penrose diagrams.
  • Journey into a realistic (well, kind of) black hole — the wormhole is destroyed by the mass inflation instability.
  • The movies on this site were made with the Black Hole Flight Simulator.



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2011-01-04

Living Earth Simulator will Simulate the Entire Planet



Largest Supercomputers to Simulate Life on Earth, Including Economies and Whole Societies

Scientists are planning to use the largest supercomputers to simulate life on Earth, including the financial system, economies and whole societies. The project is called "Living Earth Simulator" and part of a huge EU research initiative named FuturIcT.





Europe's Plan to Simulate the Entire Planet

The 'Living Earth Simulator' will mine economic, environmental and health data to create a model of the entire planet in real time.


Think of it as a kind of Google Earth for society. We've all played with Google's 3D map of the Earth that uses real data to reveal not only the town where you live and work but your home and back garden too.

Imagine a similar model that uses in real time things like financial transactions, health records, travel details, carbon dioxide emissions and so on to build a model of not just the planet but the entire society that populates it. Helbing calls it 'reality mining'.

This model will be capable not only modelling the planet in real time but of simulating the future, rather in the manner of weather forecasters.



FuturICT: Unleash the Power of Information


The FuturICT Knowledge Accelerator is a previously unseen multidisciplinary international scientific endeavour with focus on techno-socio-economic-environmental systems. The three main achievements of the FuturICT flagship will be the establishment of

  1. a Living Earth Simulator (global-scale simulation of techno-socio-economic systems),
  2. Crisis Observatories (for financial instabilities, scarcity of resources, emerging risks and conflicts, epidemics, etc.), and
  3. an Innovation Accelerator (identifying innovations early on, evaluating them across disciplines and supporting co-creation projects between different scientific disciplines, business, and governance).

Collected from: FuturICT: FuturIcT

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2010-01-25

Slime Mould Simulates Railwaiy Network

Clipped from: CBC News - Technology & Science - Slime mould mimics Tokyo's railway

CBCnews

Slime mould mimics Tokyo's railway

A single-celled slime mould mindlessly foraging for food can create a network as efficient as the Tokyo rail system, researchers say.



A team of Japanese and British researchers say the behaviour of the amoeba-like mould could lead to better design of computer or communication networks. The slime mould Physarum polycephalum grows to connect itself to food sources as part of its normal behaviour.
The mould "can find the shortest path through a maze or connect different arrays of food sources in an efficient manner," wrote Atsushi Tero of Hokkaido University and his colleagues in this week's issue of Science.


Clipped from: Better transit design through ... slime mold? - LiveScience- msnbc.com

Better transit design through ... slime mold?




The left image shows slime mold growing out from an initial food source to colonize other food sources (white dots) arranged like a map of Tokyo rail stations. After 26 hours of growth, the mold resolved itself into a network of tubes that efficiently connected the food sources.



Clipped from: Ride the Slime Mold Express! -- Wogan 2010 (121): 1 -- ScienceNOW

Ride the Slime Mold Express!

The work is "a very interesting example of how biology can inspire new methods in technological design," says Melanie Mitchell, a computer scientist at Portland State University in Oregon. But she's not quite ready to jump on the slime mold express. "This paper uses only one relatively simple example," she cautions. "It's not obvious that similar experiments would work as well for matching other transport networks."


Sources:
  1. CBC News - Technology & Science - Slime mould mimics Tokyo's railway
  2. Better transit design through ... slime mold? - LiveScience- msnbc.com
  3. Ride the Slime Mold Express! -- Wogan 2010 (121): 1 -- ScienceNOW
  4. Rules for Biologically Inspired Adaptive Network Design -- Tero et al. 327 (5964): 439 -- Science
   Related:
  1. Slime design mimics Tokyo's rail system
  2. BBC News - Engineers 'can learn from slime'
  3. FOXNews.com - Can Slime Molds Solve Traffic Jams?
  4. Observations: Slime mold validates efficiency of Tokyo rail network
  5. Slime mould attacks simulates Tokyo rail network : Not Exactly Rocket Science
  6. Brainless Slime Mold Builds a Replica Tokyo Subway | 80beats | Discover Magazine
    
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2008-07-13

Virtual Reality Surgical Training


About the LapMentor a virtual reality surgical simulator which provides a method to maintain and evaluate surgical skills.
clipped from vroot.org
This Medical News Today article reports the correlation of videotape scores (VS) of actual surgical procedures, as assessed by the Endoscopic Surgical Skill Qualification (ESSQ) System to motion analysis data on the LapMentor system, a virtual reality laparoscopic surgical simulator.
Medical News Today

Positive Correlation Between Motion Analysis Data On LapMentor Virtual Reality Laparoscopic Surgical Simulator And Video Tape Assessment Results

clipped from www.simbionix.com

The LAP Mentor™ multi-disciplinary LAP surgery simulator enables simultaneous hands-on practice for a single trainee or a team. The system offers training opportunities to new and experienced surgeons for everything from perfecting basic laparoscopic skills to performing complete laparoscopic surgical procedures.

clipped from www.simbionix.com



The LAP Mentor™ enables laparoscopy simulation and
practice on an extensive collection of laparoscopic tools
with haptic sensations:




Right Angle Dissector Curved
Dissector
Retraction


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Related:
Positive Correlation Between Motion Analysis Data On LapMentor VR Laparoscopic Surgical Simulator And Video Assessment Results | VRoot.org
Positive Correlation Between Motion Analysis Data On LapMentor Virtual Reality Laparoscopic Surgical Simulator And Video Tape Assessment Results
LAP Mentor laparoscopic surgery simulator for general surgery, gynecology and urology
Laparoscopic surgery, laparoscopy simulation, Laparoscopic instruments
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2008-03-20

The Blue Brain project

A project in which using the huge computational capacity IBM's Blue Gene supercomputer a detailed model of the human brain is created.
clipped from bluebrain.epfl.ch
BBP LOGO350.jpg

The Blue Brain project is the first comprehensive attempt to reverse-engineer the mammalian brain, in order to understand brain function and dysfunction through detailed simulations.

clipped from bluebrain.epfl.ch

Simulating the microcircuit

Once the microcircuit is built, the exciting work of making the circuit function can begin. All the 8192 processors of the Blue Gene are pressed into service, in a massively parallel computation solving the complex mathematical equations that govern the electrical activity in each neuron when a stimulus is applied.
clipped from bluebrain.epfl.ch

A few benefits of the Blue Brain Project


Gathering and Testing 100 Years of Data

Cracking the Neural Code

Understanding Neocortical Information Processing

A Novel Tool for Drug Discovery for Brain Disorders

A Global Facility

A Foundation for Whole Brain Simulations

A Foundation for Molecular Modeling of Brain Function

clipped from mediatheque.epfl.ch
clipped from www.youtube.com
Blue Brain Project - Flying through the column

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Related:
Blue Brain - Wikipedia, the free encyclopedia
Blue Brain Project
IBM Research | Press Resources | IBM/EPFL Blue Brain Project
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2008-02-25

Are we living in a simulation? (video)

Are we living in a computer simulation?

According to Nick Bostrom, a philosopher at Oxford University, it is almost a mathematical certainty that such is the case. But don't worry:
Whether we live in a computer simulation or not doesn't really affect how we should live our lives. The world is still going to the same - the same things make us happy and the same problems will still have to be solved.

Even if we're not real, we perceive our world to be real. This is similar to the brain in a vat thought experiment. We can never be totally sure whether we are materialistically real. We could be inside a computer simulation but we are still real in the sense that we have thoughts and feelings. [Are we real?]





Are You Living in a Computer Simulation?

Related:
Our Lives, Controlled From Some Guy’s Couch - New York Times
Are You Living in a Computer Simulation?
Simulation - Simulism
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2007-11-30

Computer Simulation of the Brain

A Working Brain Model

An ambitious project to create an accurate computer model of the brain has reached an impressive milestone. Scientists in Switzerland working with IBM researchers have shown that their computer simulation of the neocortical column, arguably the most complex part of a mammal's brain, appears to behave like its biological counterpart. By demonstrating that their simulation is realistic, the researchers say, these results suggest that an entire mammal brain could be completely modeled within three years, and a human brain within the next decade.

Connect the dots: A representation of a mammalian neocortical column, the basic building block of the cortex. The representation shows the complexity of this part of the brain, which has now been modeled using a supercomputer.
Credit: BBP/EPFL


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Related:
About the Blue Brain Project
The Blue Brain Project : Abstract : Nature Reviews Neuroscience
Markram, Henry
Thomas Serre: Home
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