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:11/21/2014)... 2014  Earlier this year Donald Spector , ... one of the most prolific inventors in the world, ... from Smartphones to third party agencies. Spector envisioned this ... of the earliest known patents in this area. Now ... military, child care, elder care and hospital applications. This ...
(Date:11/21/2014)... Nov. 20, 2014 C-Labs LLC, a leading ... of Things (IoT), today announced the appointment of ... officer. Previously a strategic advisor to the firm, Mr. ... Mr. Traynor is based out of the C-Labs office ... to Chris Muench , Chief Executive Officer. ...
(Date:11/18/2014)... -- The Secure Identity & Biometrics Association (SIBA) and ... formation of The Airport Entry and Exit Working ... Biometric Entry and Exit Solutions Framework for Airports ... BORDERPOL, the international non-profit organization that works directly ... border security, traveler and migration systems. ...
Breaking Biology News(10 mins):Patented Biosensor Wearable Technology Provides a More Civilized Method of Quarantine 2Patented Biosensor Wearable Technology Provides a More Civilized Method of Quarantine 3Patented Biosensor Wearable Technology Provides a More Civilized Method of Quarantine 4C-Labs Names Former Microsoft and Bsquare Executive as Chief Operating Officer 2Identity Management, Document Authentication and Biometric Companies Form "The Airport Entry and Exit Working Group", Releasing the Framework to Help Guide the Department of Homeland Security and Congress Towards Solutions 2Identity Management, Document Authentication and Biometric Companies Form "The Airport Entry and Exit Working Group", Releasing the Framework to Help Guide the Department of Homeland Security and Congress Towards Solutions 3
... Plant Science Center in Sweden discovered, in collaboration with the ... blocks flowering. Only with the cold of winter is the ... its second year. The discovery of this new gene function ... new findings were recently published in the prestigious journal ...
... , COLUMBUS, Ohio Many U.S. restaurants may be ignoring ... restaurants, according to a small exploratory study. Researchers found ... in Columbus said they would be willing to pay more ... 10 said it was good for restaurants to protect the ...
... Known nationally for her research into single-cell organisms that ... of microbiology and molecular genetics at The University of ... selected to receive the 2011 American Society for Microbiology ... members who have made significant contributions to the society. ...
Cached Biology News:New discovery about how flowering time of plants can be controlled 2Diners may be willing to pay more to eat at 'green' restaurants 2Diners may be willing to pay more to eat at 'green' restaurants 3UTHealth professor to receive service award from American Society for Microbiology 2
(Date:11/21/2014)... The November 2014 issue of BioTechniques ... access journal featuring the following articles:, , ... photoresponsiveness in the retina , DNA from ... using chromogenic substrates in zebrafish , Re-use ... electrophoresis , Nuclear LC3-positive puncta in stressed ...
(Date:11/21/2014)... DIEGO , Nov. 20, 2014 ... has been dosed in its Phase 1 trial ... cisplatin for the treatment of malignant pleural mesothelioma ... Group is conducting clinical trials on ADI-PEG 20, ... agents, for the treatment of several other indications, ...
(Date:11/18/2014)... RPS Diagnostics (RPS®) – a developer ... its third annual partnership of the Centers for ... Antibiotics Week from November 17-23. , Get Smart ... to highlight the coordinated efforts of CDC, state ... partners to provide education about the importance of ...
(Date:11/18/2014)... (PRWEB) November 18, 2014 American ... Australia) recently formed a partnership with researchers at ... University of Technology, and the USDA’s Forest Products ... reinforced with nanocellulose. Nanocellulose is a rapidly emerging ... of the project is to replace heavy steel ...
Breaking Biology Technology:BioTechniques: The International Journal of Life Science Methods Announces the Publication of the November 2014 Issue—Available in Print and Online 2BioTechniques: The International Journal of Life Science Methods Announces the Publication of the November 2014 Issue—Available in Print and Online 3Polaris Group Announces Treatment of First Patient in Phase 1 Study of ADI-PEG 20 plus Pemetrexed and Cisplatin in Malignant Pleural Mesothelioma And Non-Squamous Non-Small Cell Lung Carcinoma 2RPS Again Partners with the CDC in Support of the 2014 Get Smart About Antibiotics Week 2RPS Again Partners with the CDC in Support of the 2014 Get Smart About Antibiotics Week 3American Process Inc. Announces Partnership to Develop Ultra-Strong, Lightweight Automotive Components Using Nanotechnology from Nature 2American Process Inc. Announces Partnership to Develop Ultra-Strong, Lightweight Automotive Components Using Nanotechnology from Nature 3
... YORK, Feb. 11 VaxGen, Inc. (Pink Sheets:,VXGN), WHAT: Jim Panek, CEO ... provide an update on Raven,s oncology ... plans and prospects for the new Company., WHEN: 2:45 ... webcast of the presentation, go to VaxGen@BIOCEO, ...
... - ... Raised - - Conference Call to be Held ... Uroplasty, Inc. (Amex:,UPI), a medical device company that develops, manufactures and markets,innovative ... of $3.7 million for the third quarter of,fiscal 2008 ended December 31, ...
... SAN FRANCISCO, Calif., Feb. 8 Anesiva,Inc. (Nasdaq: ... Janney to,the company,s board of directors. Mr. Janney previously ... when he transitioned off,the board following the merger of ... contributor to the Anesiva board of directors,and we are ...
Cached Biology Technology:VaxGen to Present at the 10th Annual BIO CEO and Investor Conference 2VaxGen to Present at the 10th Annual BIO CEO and Investor Conference 3Uroplasty Reports Record Sales for Third Fiscal Quarter and Nine Months Ended December 31, 2007 2Uroplasty Reports Record Sales for Third Fiscal Quarter and Nine Months Ended December 31, 2007 3Uroplasty Reports Record Sales for Third Fiscal Quarter and Nine Months Ended December 31, 2007 4Uroplasty Reports Record Sales for Third Fiscal Quarter and Nine Months Ended December 31, 2007 5Uroplasty Reports Record Sales for Third Fiscal Quarter and Nine Months Ended December 31, 2007 6Uroplasty Reports Record Sales for Third Fiscal Quarter and Nine Months Ended December 31, 2007 7Uroplasty Reports Record Sales for Third Fiscal Quarter and Nine Months Ended December 31, 2007 8Uroplasty Reports Record Sales for Third Fiscal Quarter and Nine Months Ended December 31, 2007 9Uroplasty Reports Record Sales for Third Fiscal Quarter and Nine Months Ended December 31, 2007 10Anesiva Appoints Daniel Janney to Board of Directors 2Anesiva Appoints Daniel Janney to Board of Directors 3
One-step, microplate or cuvet, colorimetric, linear detection range 6 mg/dL to 100mg/dL. Procedure: 15 min....
assays for phosphatase, lipase, nucleoside triphosphatases (ATPase, GTPase etc). HTS and follow up studies for phosphatase inhibitors. Quantitation of phosphate content in protein, lipids, and DNA....
EnzChek cellulase substrate *blue fluorescent, 339/452...
... 0.5-10 Kb RNA Ladder is suitable for sizing single-stranded ... glyoxal or formaldehyde agarose gels. The ladder consists of ... 3 4 6 8 and 10 kb) to simplify ... than the other bands allowing easy orientation and identification ...
Biology Products: