Featured Research

from universities, journals, and other organizations

Accurate Predictions In A Limited Calculation Time

Date:
September 9, 2009
Source:
NWO (Netherlands Organization for Scientific Research)
Summary:
Air, road traffic and water flows can only be accurately predicted with computer simulations if the computers can automatically focus on important changes in an area, say researchers.

Air, road traffic and water flows can only be accurately predicted with computer simulations if the computers can automatically focus on important changes in an area, says Dutch researcher Arthur van Dam.

Related Articles


A wide variety of flows around us can be modelled, such as traffic flows on motorways, water flows in canals, and gas flows in the atmosphere. A computer can calculate these flows with the help of physics formulae. But even computers have difficulty in calculating, for example, how the air pressure develops over a longer period of time and in large areas.

That is because an area is divided into conceptual pieces for which, for example, the average air pressure and flow rate are calculated. The accuracy of the calculation increases if smaller pieces are used. The downside, however, is that the computer has to calculate for longer because more pieces are needed for the same area.

In his doctoral thesis Van Dam describes a method that automatically reduces the pieces in an ingenious manner. This happens for more complex changes in particular, for example during rapid changes in air pressure, or a rapid increase in traffic density (upon joining a traffic jam). The human eye can easily identify these locations, whereas a computer finds it difficult to find these and to assess their level of complexity. The new method does this in a balanced manner. This automatic focus on interesting areas enables computer simulations to provide highly accurate results within a limited calculation time.

The research was carried out at Utrecht University and funded within the programme Mathematics Applied from NWO Physical Sciences and Technology Foundation STW. This programme aims to strengthen mathematical research that is oriented to social needs.


Story Source:

The above story is based on materials provided by NWO (Netherlands Organization for Scientific Research). Note: Materials may be edited for content and length.


Cite This Page:

NWO (Netherlands Organization for Scientific Research). "Accurate Predictions In A Limited Calculation Time." ScienceDaily. ScienceDaily, 9 September 2009. <www.sciencedaily.com/releases/2009/09/090902122438.htm>.
NWO (Netherlands Organization for Scientific Research). (2009, September 9). Accurate Predictions In A Limited Calculation Time. ScienceDaily. Retrieved January 30, 2015 from www.sciencedaily.com/releases/2009/09/090902122438.htm
NWO (Netherlands Organization for Scientific Research). "Accurate Predictions In A Limited Calculation Time." ScienceDaily. www.sciencedaily.com/releases/2009/09/090902122438.htm (accessed January 30, 2015).

Share This


More From ScienceDaily



More Matter & Energy News

Friday, January 30, 2015

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Nanoscale Sensor Could Help Wine Producers and Clinical Scientists

Nanoscale Sensor Could Help Wine Producers and Clinical Scientists

Reuters - Innovations Video Online (Jan. 30, 2015) — A nanosensor that mimics the oral effects and sensations of drinking wine has been developed by Danish and Portuguese researchers. Jim Drury saw it in operation. Video provided by Reuters
Powered by NewsLook.com
Tesla 'Insane Mode' Gives Unsuspecting Passengers the Ride of Their Life

Tesla 'Insane Mode' Gives Unsuspecting Passengers the Ride of Their Life

RightThisMinute (Jan. 29, 2015) — If your car has an "Insane Mode" then you know it&apos;s fast. Well, these unsuspecting passengers were in for one insane ride when they hit the button. Tesla cars are awesome. Video provided by RightThisMinute
Powered by NewsLook.com
Now Bill Gates Is 'Concerned' About Artificial Intelligence

Now Bill Gates Is 'Concerned' About Artificial Intelligence

Newsy (Jan. 29, 2015) — Bill Gates joins the list of tech moguls scared of super-intelligent machines. He says more people should be concerned, but why? Video provided by Newsy
Powered by NewsLook.com
Senate Passes Bill for Keystone XL Pipeline

Senate Passes Bill for Keystone XL Pipeline

AP (Jan. 29, 2015) — The Republican-controlled Senate has passed a bipartisan bill approving construction of the Keystone XL oil pipeline. (Jan. 29) Video provided by AP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
 
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:  

Breaking News:

Strange & Offbeat Stories

 

Space & Time

Matter & Energy

Computers & Math

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:  

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile iPhone Android Web
Follow Facebook Twitter Google+
Subscribe RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins