Navigation Links
MIT control theory research: How to control complex networks
Date:5/12/2011

tine says. Control research on large networks has been concerned mostly with questions of synchronization, he says.

In the past 10 years, researchers have learned a great deal about the organization of such networks, in particular their topology the patterns of connections between different points, or nodes, in the network. Slotine and his colleagues applied traditional control theory to these recent advances, devising a new model for controlling complex, self-assembling networks.

The researchers started by devising a new computer algorithm to determine how many nodes in a particular network need to be controlled in order to gain control of the entire network. (Examples of nodes include members of a social network, or single neurons in the brain.)

"The obvious answer is to put input to all of the nodes of the network, and you can, but that's a silly answer," Slotine says. "The question is how to find a much smaller set of nodes that allows you to do that."

There are other algorithms that can answer this question, but most of them take far too long years, even. The new algorithm quickly tells you both how many points need to be controlled, and where those points known as "driver nodes" are located.

Next, the researchers figured out what determines the number of driver nodes, which is unique to each network. They found that the number depends on a property called "degree distribution," which describes the number of connections per node.

A higher average degree (meaning the points are densely connected) means fewer nodes are needed to control the entire network. Sparse networks, which have fewer connections, are more difficult to control, as are networks where the node degrees are highly variable.

In future work, Slotine and his collaborators plan to delve further into biological networks, such as those governing metabolism. Figuring out how bacterial metabolic networks are controlled could help biologi
'/>"/>

Contact: Caroline McCall
cmccall5@mit.edu
Massachusetts Institute of Technology
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Ben-Gurion University students develop thought-controlled, hands-free computer for the disabled
2. Dopamine controls formation of new brain cells
3. People control thoughts better when they see their brain activity: UBC study
4. Starch-controlling gene fuels more protein in soybean plants
5. Immune therapy can control fertility in mammals
6. Getting closer to a better biocontrol for garden pests
7. Latest hands-free electronic water faucets found to be hindrance, not help, in infection control
8. €12 million ($16.9 million) project to develop new tools for malaria control
9. Asthma drug could help control or treat Alzheimers disease
10. Economics and evolution help scientists identify new strategy to control antibiotic resistance
11. World first -- Localized delivery of an anti-cancer drug by remote-controlled microcarriers
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:8/27/2014)... is a dreaded bacterium that can be found in ... weeks, 28 persons in Denmark have been infected with ... 13 have died. , The bacterium is notoriously difficult ... to adapt to changes in its surroundings, says Associate ... colleagues from the Department of Biochemistry and Molecular Biology, ...
(Date:8/26/2014)... of harmful bacteria, biofilms make the treatment of ... biofilm pose a significant health risk due to ... biofilm-protected bacteria account for some 80 percent of ... to 1,000 times more resistant to antibiotics than ... have stumbled onto a magic bullet," said David ...
(Date:8/26/2014)... endemic tree has for the last 31 years been incorrectly ... and small trees. A New Zealand botanist has completed a ... diversity behind what was long considered a single tree species. ... PhytoKeys . , Known to botanists as ... discoveries made in the north-western South Island of New Zealand ...
Breaking Biology News(10 mins):Researchers discover why Listeria bacterium is so hard to fight 2Researchers discover why Listeria bacterium is so hard to fight 3Breakthrough antibacterial approach could resolve serious skin infections 2Breakthrough antibacterial approach could resolve serious skin infections 3And then there were 10 -- unexpected diversity in New Zealand kanuka genus Kunzea 2And then there were 10 -- unexpected diversity in New Zealand kanuka genus Kunzea 3
... Dr. Marie Kmita and her research team at the ... the mechanism responsible for generating our fingers and toes, ... transition of fins to limbs during evolution. Their scientific ... Science . By combining genetic studies ...
... Fox Foundation grant will be used to study ... preclinical models." This project could open a ... where,current approaches are limited mainly to dopaminergic replacement ... and his colleague at LSCB, Dr. Manuel Buttini, ...
... awarded a group led by the University of Washington ... methane in natural gas into diesel fuel for transportation. ... same fuel characteristics as diesel," said principal investigator Mary ... "It can be used in trucks, boats, buses, cars, ...
Cached Biology News:What mechanism generates our fingers and toes? 2Energy Deptartment funds UW project to turn wasted natural gas into diesel 2
(Date:8/27/2014)... 2014 Budding Biomedical Scientists , ... School participated in the Scientific Enrichment and ... School of Medicine . , The ... professional experience in the sciences and brings them ... and students for both academic and career mentoring. ...
(Date:8/26/2014)... An analysis by Replikins, Ltd. of Pubmed data of ... virus strains has revealed extensive conservation and sharing of ... sharing of specific Replikin gene structures has permitted the ... did for the H5N1 influenza vaccine and the Taura ... to be effective (1,2). This ...
(Date:8/26/2014)... REHOVOT, Israel , August 26, 2014 /PRNewswire/ ... specialist, Replica 3DM, supports NHS hospitals with surgery validation using ... - Performing surgery on 3D printed models ... patient recovery and provides an effective aid for both patient ... (Nasdaq: SSYS ), a global leader of 3D ...
(Date:8/26/2014)... 2014 Technology Applications International Corporation, (OTCBB: ... two (2) wholly- owned subsidiaries, Renuell Int,l, lnc., ... advanced technology to provide advanced solutions to common ... Inc. is launching its REJUVEL brand of ... is made possible because of its exclusive license ...
Breaking Biology Technology:Students at Cleveland's University School Conduct Biomedical Research at Case Western Reserve University’s School of Medicine 2Twelve UK Hospitals Enjoy Reduced Surgical Procedure Times and Decline in Costs by Implementing Stratasys 3D Printing Solutions 2Twelve UK Hospitals Enjoy Reduced Surgical Procedure Times and Decline in Costs by Implementing Stratasys 3D Printing Solutions 3Twelve UK Hospitals Enjoy Reduced Surgical Procedure Times and Decline in Costs by Implementing Stratasys 3D Printing Solutions 4Twelve UK Hospitals Enjoy Reduced Surgical Procedure Times and Decline in Costs by Implementing Stratasys 3D Printing Solutions 5Technology Applications International Corporation, Trading Symbol NUUU now trading on NASDAQ's Over the Counter Bulletin Board (OTC BB) 2
... yet to hit its growth spurt so whats taking ... what it takes to support a high-tech business community, ... other regions? , , Accelerate Madison , a local ... information technology, hosted a forum to address these issues ...
... Bob Dylan fan, but lately I cant help thinking of ... in which he questions mans inability to confront what is ... to mind whenever the media starts hyping yet another new ... the rage. Anyone hesitating to reengineer their business processes risked ...
... ancient and proud history of interstate sports rivalries (especially ... this past New Years Day, the rivalry generates nasty ... marijuana have in common? They both get smoked in ... another interstate rivalry. This one is of keen interest ...
Cached Biology Technology:Tech Business Leaders Compare Madison to Other Regions 2Tech Business Leaders Compare Madison to Other Regions 3Tech Business Leaders Compare Madison to Other Regions 4Offshore Outsourcing: On Target or Off Base? 2Offshore Outsourcing: On Target or Off Base? 3For Now, Michigan Can Celebrate $150 Million Entrepreneurial VC Fund 2For Now, Michigan Can Celebrate $150 Million Entrepreneurial VC Fund 3For Now, Michigan Can Celebrate $150 Million Entrepreneurial VC Fund 4
Sheep polyclonal to Quinolone ( Abpromise for all tested applications). Antigen: Norfloxacin(N)conjugated to BSA...
Normal Bovine Serum; U.S. sourced, ideal for those who seek an uncompromising quality. Low Hemoglobin levels; U.S. sourced, ideal for those who seek an uncompromising quality. Low Hemoglobin lev...
DONOR BOVINE SERUM AND PLASMA...
...
Biology Products: