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pierredv : simulation   37

We can’t ever know whether or not our universe is a simulation | New Scientist, Oct 2017
"Are we living in a simulation? A flurry of headlines says no: we need no longer worry about our lives being mere software spawned by a highly advanced supercomputer. These stories stem from a recent Science Advances paper about simulating quantum physics. . . . But the paper only claims that a specific, limited type of simulation won’t work due to technical and hardware issues."

"The simulation hypothesis has been gaining prominence since 2002, when Nick Bostrom ..."

“To me, both the ‘are we living in a simulation’ question and any response to it based on current computer knowledge is silly,” says Marcelo Gleiser at Dartmouth College in Hanover, New Hampshire.
simulation  Sci-Fi  NewScientist 
13 hours ago by pierredv
Are We Living in a Computer Simulation? Scientists Prove Elon Musk Wrong - Newsweek, Apr 2017
"Theoretical physicists have dispelled the idea we are living in a Matrix-style computer simulation, calculating that not all aspects of our reality can be simulated efficiently using computers.

The simulation theory has been a staple of science fiction for decades and was detailed in a 2003 paper by the philosopher Nick Bostrom. On the basis of this paper, Tesla and SpaceX CEO Elon Musk has stated there is a 99.99 percent chance that the universe we inhabit is a computer simulation, while physicist Neil deGrasse Tyson says that is is "very likely."

Researchers at the University of Oxford have now calculated that "even just to store the information about a few hundred electrons on a computer one would require a memory built from more atoms than there are in the universe.""
Newsweek  simulation  Sci-Fi 
13 hours ago by pierredv
Colosseum: A Battleground for AI Let Loose on the RF Spectrum | 2018-09-15 | Microwave Journal
"In this article, we discuss the design and implementation of Colosseum, including the architectural choices and trades required to create an internet-based radio development and test environment of this scope and scale."
MicrowaveJournal  DARPA  Colosseum  AI  RF  simulation  mirror-worlds 
september 2018 by pierredv
MANET simulation studies - Kurkowski Camp Colagrosso 2005
Via Keith Gremban, 2018

Simulation is the research tool of choice for a majority of the mobile ad hoc network (MANET) community. However, while the use of simulation has increased, the credibility of the simulation results has decreased. To determine the state of MANET simulation studies, we surveyed the 2000-2005 proceedings of the ACM International Symposium on Mobile Ad Hoc Networking and Computing (MobiHoc). From our survey, we found significant shortfalls. We present the results of our survey in this paper. We then summarize common simulation study pitfalls found in our survey. Finally, we discuss the tools available that aid the development of rigorous simulation studies. We offer these results to the community with the hope of improving the credibility of MANET simulation-based studies.
simulation  methods  networking 
march 2018 by pierredv
Solar System Live
"Welcome to Solar System Live, the interactive Orrery of the Web. You can view the entire Solar System, or just the inner planets (through the orbit of Mars)."
astronomy  simulation  orrery  tools 
december 2017 by pierredv
This Unreal Engine Generated Face Almost Escapes The Uncanny Valley And It's Freaking Us Out - Digg Sep 2017
"Escaping the uncanny valley is the holy grail for human animation in video games, but it's proved elusive so far. Based on this new demo for the Unreal Engine, however, we're getting closer, and it's pretty unnerving"
animation  simulation  Digg 
october 2017 by pierredv
Engineering Tools | AGI
"Systems Tool Kit (STK) is the premier software for providing four-dimensional modeling, simulation, and analysis of objects from land, sea, air, and space in order to evaluate system performance in real or simulated-time."
satellite  space  modeling  simulation  space-debris  tracking 
august 2017 by pierredv
World’s Most Powerful Emulator of Radio-Signal Traffic Opens for Business, April 2017
"New electronic simulation forum for wireless communication will host much of DARPA’s Spectrum Collaboration Challenge"

Paul Tilghman: “By contrast, SC2 is asking a group of radios that weren’t designed to work together to learn how to optimize spectrum capacity in real-time, and is relying on artificial intelligence to find and take advantage of ‘gaps’ and other opportunities to increase efficiency. You can’t satisfactorily learn how to solve this puzzle unless you address it at scale, and that’s why the Colosseum is such a critical part of the solution.”

"By the numbers, the Colosseum testbed is a 256-by-256-channel RF channel emulator, which means it can calculate and simulate in real-time more than 65,000 channel interactions among 256 wireless devices. Each simulated channel behaves as though it has a bandwidth (information content) of 100 MHz, which means the testbed supports 25.6 GHz of bandwidth in any instant. Moreover, each channel’s transmission and reception frequency is tunable between 10 MHz (as in broadcast FM radio) and 6 GHz (as in WiFi)."
DARPA  SC2  mirror-worlds  simulation  modeling 
august 2017 by pierredv
Virtual worlds so good they'll change our grasp on real life - tech - 20 May 2015 - Control - New Scientist
"A London start-up called Improbable is powering this live demonstration. Rather than make single servers simulate a whole sector of the virtual world, it computes individual elements using connected "worker" programs, running across a network of servers." "The workers are like a swarm of bees or ants doing little things," says Herman Narula, Improbable's CEO. Acting together, they can achieve more than any individual server. The approach allows for low-cost simulations in which realistic interactions are ubiquitous. - "At the University of Oxford's Institute for New Economic Thinking, David Pugh and his team are planning to use Improbable to create a sophisticated model of the entire UK housing market, among other things." - "Improbable's technology has medical applications too. "You could simulate cancer growth at scale, by simulating all of the cancer cells that are growing," says Bonabeau."
NewScientist  mirror-worlds  RF-mirror-worlds  simulation  games  economics 
july 2015 by pierredv
Radio Mobile - RF propagation simulation software - Welcome
"Radio Mobile is software by Roger Coudé VE2DBE. The program simulates RF propagation and is for free to the amateur radio community."
radio  propagation  simulation  modeling 
june 2015 by pierredv
simulacra from mustardcuffins --
via Faith is Torment "Today abstraction is no longer that of the map, the double, the mirror, or the concept. Simulation is no longer that of a territory, a referential being, or a substance. It is the generation by models of a real without origin or reality: a hyperreal. The territory no longer precedes the map , nor does it survive it. It is nevertheless the map that precedes the territory - procession of simulacra - that engenders the territory, and if one must return to the fable, today it is the territory whose shreds slowly rot across the extent of the map. It is the real, and not the map, whose vestiges persist here and there in the deserts that are no longer those of the Empire, but ours. The desert of the real itself." Simulacra and Simulation By Jean Baudrillard
cities  landscapes  video  vimeo  simulation  simulacra  * 
april 2015 by pierredv
Danish government releases geographic data by way of 1:1 Minecraft map | Ars Technica
"But what can happen when a city—or even country—opens its data doors for a total Minecraft recreation? For an answer, take a look at Denmark. Really, go look at it. You can jump into Minecraft right now and virtually walk around the nation's shores, highways, and cities because the Danish Geodata Agency has launched a full 1:1 recreation."
ArsTechnica  mirror-worlds  simulation  mapping  Denmark  minecraft  maps 
july 2014 by pierredv
Model Universe recreates evolution of the cosmos : Nature News & Comment May 2014
Work by Mark Vogelsberger et al, MIT "Can current theories of cosmology explain how the Universe evolved? One way to find out is to plug everything we think we know about the early Universe and how galaxies form into a supercomputer, and see what comes out. In a simulation presented today in Nature1, researchers did just that — and revealed a cosmos that looks rather like our own. The findings lend weight to the standard model of cosmology, but could also help physicists to probe where our models of galaxy formation fall down."
cosmology  universe  modeling  simulation  mirror-worlds  NatureJournal 
may 2014 by pierredv
How the American people would fix Social Security -
"The process they went through simulates the one a policymaker goes through. (Try this "policy simulation" yourself at"
US  politics  CSMonitor  social-security  simulation  policymaking  policy 
april 2014 by pierredv
EPFD Software - Recommendation ITU-R S 1503
"Visualyse EPFD is a mature and fully tested implementation of the direct simulation algorithm contained in Recommendation ITU-R S.1503. .. Visualyse EPFD evaluates the compatibility of a non-GSO filing with the limits in Article 22 – assessed according to the methods of Recommendation ITU-R S.1503. For each filing there are multiple applicable EPFD limits depending on frequency band and victim antenna dish size. Visualyse EPFD automatically sets up simulations for each applicable limit. It calculates the worst case location for the victim station and undertakes a complex calculation for each case. The calculation is based on the dynamics of the non-GSO system and the geometry dependent EPFD masks that will be notified with the network. For detailed discussion of the algorithm you can download documents from the download section of this site"
spectrum  field-strength  ITU  modeling  simulation  Transfinite 
march 2014 by pierredv
Virtual reality creates infinite maze in a single room - tech - 05 April 2013 - New Scientist
"STEP into the labyrinth. Imagine physically wandering through the many rooms and corridors of an endless maze, never seeing the same place twice – but without actually leaving your living room. This is the promise of a new virtual reality (VR) system. It works by tracking the body and head movements of a person wearing a VR headset and guides them through endless sets of virtual spaces as they pace around within a real physical space. The trick is that, in the virtual world, the corridors and rooms are generated automatically as the walker moves to always fit inside the real space available. There is potentially no end to the environment, just like a huge video game."
VR  virtualreality  NewScientist  architecture  simulation 
may 2013 by pierredv
Irregular Terrain Model (ITM) (Longley-Rice) - source page NTIA/ITS
The ITS model of radio propagation for frequencies between 20 MHz and 20 GHz (the Longley-Rice model) (named for Anita Longley & Phil Rice, 1968) is a general purpose model that can be applied to a large variety of engineering problems. The model, which is based on electromagnetic theory and on statistical analyses of both terrain features and radio measurements, predicts the median attenuation of a radio signal as a function of distance and the variability of the signal in time and in space.
radio  propagation  propagationmodel  ITM  simulation  longley-rice 
july 2012 by pierredv
Rigid-Body Fracture Sound
the sound of stuff breaking, reported New Sci 24 Jul 2010 "Taking the toil of out animation soundtracks"
sound  audio  physics  simulation  NewScientist 
august 2010 by pierredv
Sounding Liquids: Automatic Sound Synthesis from Fluid Simulation
Reported in NewSci 24 Jul 2010, "Taking the toil out of animation soundtracks"
sound  audio  science  simulation  NewScientist  video 
august 2010 by pierredv
Vet School 2.0: Stick Your Hand Up a Virtual Cow Butt | Wired Science |
Quote: veterinarian and computer scientist Sarah Baillie has created the “Haptic Cow,” a virtual, touch-feedback device that mimics the feeling of real bovine anatomy, placed inside a fiberglass model of a cow’s rear end.
“With this technology, students can feel something that feels like the inside of a real cow, but I or another instructor can be following their movements on a monitor,” said Baillie, who teaches at the Royal Veterinary College in London. “This means we can say, ‘Come back a bit or go left a bit.’ It actually means you can direct them.”
x:wired  via:gmsv  virtualworlds  simulation  healthcare 
november 2009 by pierredv
Crowd modelling: Model behaviour | The Economist Tech Quarterly March 7th, 2009
"Simulating the behaviour of crowds of people, or swarms of animals, has both frivolous and important uses" Descriptions of various applications, from simulating armies in fantasy movies to fire escape route planning
complexity  simulation  agentbasedmodeling  economist 
july 2009 by pierredv
NetLogo is a cross-platform multi-agent programmable modeling environment
via computationallegalstudies blog, katz's syllabus for ABM in law
simulation  complexity  modeling  visualization  programming 
june 2009 by pierredv
Irreducible Semi-Autonomous Adaptive Combat (ISAAC): An Artificial-Life Approach to Land Warfare
"This study is a follow-on effort to a recently completed project, sponsored by the Commanding General, Marine Corps Combat Development Command (MCCDC), that assessed the general applicability of the "new sciences" to land warfare. "New sciences" is a catch-all phrase that refers to the tools and methodologies used in nonlinear dynamics and complex systems theory to study physical dynamical systems that exhibit a "complicated dynamics.""
complexity  war  simulation  agentbasedmodeling  filetype:pdf  media:document 
march 2009 by pierredv
Why economic theory is out of whack - science-in-society - 19 July 2008 - New Scientist
Review of current information theory/economics. Simulations - flocking "Physicist Jean-Philippe Bouchaud and colleagues at Capital Fund Management in Paris studied the news feeds produced by Dow Jones and Reuters that provide real-time reports of items of potential interest to investors. Looking at more than 90,000 news items relevant to hundreds of stocks over a two-year period, they studied how "jumps" in stock prices - sudden, large movements - were linked to news items. They weren't. Most such jumps weren't directly associated with any news at all, and most news items didn't cause any jumps. "Jumps seem to occur for no identifiable reason," Bouchaud says (" Modeling of why prices fluctuate so much - "public and private information tends to keep prices around realistic values, as the classical equilibrium model says it should. [But social feedback] creates groups of people coordinated in their actions, which in turn leads to bubbles
economics  finance  complexity  simulation  modeling  **  NewScientist 
december 2008 by pierredv

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