Featured Research

from universities, journals, and other organizations

Inter-dependent networks stress test

Date:
August 28, 2014
Source:
Springer Science+Business Media
Summary:
A new study relies on a complex systems modelling approach to analyze inter-dependent networks and improve their reliability in the event of failure. Energy production systems are good examples of complex systems. Their infrastructure equipment requires ancillary sub-systems structured like a network-including water for cooling, transport to supply fuel, and ICT systems for control and management.

Impact of network topologies.
Credit: Fu et al.

A new study relies on a complex systems modelling approach to analyse inter-dependent networks and improve their reliability in the event of failure.

Related Articles


Energy production systems are good examples of complex systems. Their infrastructure equipment requires ancillary sub-systems structured like a network-including water for cooling, transport to supply fuel, and ICT systems for control and management. Every step in the network chain is interconnected with a wider network and they are all mutually dependent. A team of UK-based scientists has studied various aspects of inter-network dependencies, not previously explored. The findings have been published in The European Physical Journal B by Gaihua Fu from Newcastle University, UK, and colleagues. These findings could have implications for maximising the reliability of such networks when facing natural and human-made hazards.

Previous research has focused on studying single, isolated systems, not interconnected ones. However, understanding inter-connectedness is key, since failure of a component in one network can cause problems across the entire system, which can result in a cascading failure across multiple sectors, as in the energy infrastructure example quoted above.

In this study, interdependent systems are modelled as a network of networks..The model characterises interdependencies in terms of direction, redundancy, and extent of inter-network connectivity.

Fu and colleagues found that the severity of cascading failure increases significantly when inter-network connections are one-directional. They also found that the degree of redundancy-which is linked to the number of connections-in inter-network connections can have a significant effect on the robustness of systems, depending on the direction of inter-network connections.

The authors observed that the interdependencies between many real-world systems have characteristics that are consistent with the less reliable systems they tested, and therefore they are likely to operate near their critical thresholds. Finally, ways of cost-effectively reducing the vulnerability of inter-dependent networks are suggested.


Story Source:

The above story is based on materials provided by Springer Science+Business Media. Note: Materials may be edited for content and length.


Journal Reference:

  1. Gaihua Fu, Richard Dawson, Mehdi Khoury, Seth Bullock. Interdependent networks: vulnerability analysis and strategies to limit cascading failure. The European Physical Journal B, 2014; 87 (7) DOI: 10.1140/epjb/e2014-40876-y

Cite This Page:

Springer Science+Business Media. "Inter-dependent networks stress test." ScienceDaily. ScienceDaily, 28 August 2014. <www.sciencedaily.com/releases/2014/08/140828115246.htm>.
Springer Science+Business Media. (2014, August 28). Inter-dependent networks stress test. ScienceDaily. Retrieved April 21, 2015 from www.sciencedaily.com/releases/2014/08/140828115246.htm
Springer Science+Business Media. "Inter-dependent networks stress test." ScienceDaily. www.sciencedaily.com/releases/2014/08/140828115246.htm (accessed April 21, 2015).

Share This


More From ScienceDaily



More Matter & Energy News

Tuesday, April 21, 2015

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Raw: Maine Storm Surge Sparks Power Explosions

Raw: Maine Storm Surge Sparks Power Explosions

AP (Apr. 21, 2015) Police dash cam video shows a series of explosions along the beach in Maine as heavy storm surge soaked electrical transformers. (April 21) Video provided by AP
Powered by NewsLook.com
Japan's Maglev Train Breaks New World Speed Record

Japan's Maglev Train Breaks New World Speed Record

AFP (Apr. 21, 2015) Japan&apos;s state-of-the-art maglev train clocks a new world speed record in a test run near Mount Fuji, smashing through the 600 kilometre (373 miles) per hour mark, as Tokyo races to sell the technology abroad. Video provided by AFP
Powered by NewsLook.com
Free Home Heating Offered by E-Radiators

Free Home Heating Offered by E-Radiators

Reuters - Innovations Video Online (Apr. 21, 2015) A revolutionary new radiator design offers Dutch home-owners the chance to get free heating. The e-Radiator is a computer server modified so that the heat it generates can warm a room inside a house. Jim Drury has more. Video provided by Reuters
Powered by NewsLook.com
Solar Plane Completes 6th Leg of Quest to Circumnavigate Globe

Solar Plane Completes 6th Leg of Quest to Circumnavigate Globe

AFP (Apr. 21, 2015) Solar Impulse 2 lands in the Chinese city of Nanjing, finishing the sixth stage of its landmark 12-leg quest to circumnavigate the globe powered only by the sun. Duration: 00:42 Video provided by AFP
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