Navigation Links
Stanford researchers discover the 'anternet'
Date:8/29/2012

On the surface, ants and the Internet don't seem to have much in common. But two Stanford researchers have discovered that a species of harvester ants determine how many foragers to send out of the nest in much the same way that Internet protocols discover how much bandwidth is available for the transfer of data. The researchers are calling it the "anternet."

Deborah Gordon, a biology professor at Stanford, has been studying ants for more than 20 years. When she figured out how the harvester ant colonies she had been observing in Arizona decided when to send out more ants to get food, she called across campus to Balaji Prabhakar, a professor of computer science at Stanford and an expert on how files are transferred on a computer network. At first he didn't see any overlap between his and Gordon's work, but inspiration would soon strike.

"The next day it occurred to me, 'Oh wait, this is almost the same as how [Internet] protocols discover how much bandwidth is available for transferring a file!'" Prabhakar said. "The algorithm the ants were using to discover how much food there is available is essentially the same as that used in the Transmission Control Protocol."

Transmission Control Protocol, or TCP, is an algorithm that manages data congestion on the Internet, and as such was integral in allowing the early web to scale up from a few dozen nodes to the billions in use today. Here's how it works: As a source, A, transfers a file to a destination, B, the file is broken into numbered packets. When B receives each packet, it sends an acknowledgment, or an ack, to A, that the packet arrived.

This feedback loop allows TCP to run congestion avoidance: If acks return at a slower rate than the data was sent out, that indicates that there is little bandwidth available, and the source throttles data transmission down accordingly. If acks return quickly, the source boosts its transmission speed. The process determines how much bandwid
'/>"/>

Contact: Bjorn Carey, Stanford News Service
bccarey@stanford.edu
650-725-1944
Stanford University
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Stanford expert brings climate change science to heated Capitol Hill
2. Stanford-Penn State scientists use microbes to make clean methane
3. Stanford-SLAC team uses X-ray imaging to observe running batteries in action
4. Stanford researchers calculate global health impacts of the Fukushima nuclear disaster
5. Stanford scientists find molecule to starve lung cancer and improve ventilator recovery
6. Stanford marine biologist Barbara Block wins Rolex Award for Enterprise
7. Stanford researchers help predict the oceans of the future with a mini-lab
8. Stanford scientists document fragile land-sea ecological chain
9. Support for climate change action drops, Stanford poll finds
10. Americas clean energy policies need a reality check, say Stanford researchers
11. Stanford and MIT scientists win Perl-UNC Neuroscience prize
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:12/17/2014)... Research and Markets ( http://www.researchandmarkets.com/research/s6qzt5/samsung_galaxy_s5 ... "Samsung Galaxy S5 - Home Button Synaptics Fingerprint ... http://photos.prnewswire.com/prnh/20130307/600769 ... than the iPhone 5S, Samsung introduces for the ... The Galaxy S5 home button presents ...
(Date:12/17/2014)... 16, 2014 Research and Markets ... the "Global Chemical Sensor Market 2015-2019" ... http://photos.prnewswire.com/prnh/20130307/600769 One major trend ... for medical sensors in biomedical applications. Chemical sensors ... and correct diagnosis during surgical procedures. The Global ...
(Date:12/11/2014)... Dec. 09, 2014 Research and Markets ... ( http://www.researchandmarkets.com/research/9ql3kr/biometrics_market ) has announced the ... 2015-2019" report to their offering. ... is the adoption of multimodal biometric systems. Multimodal ... an individual for verification and identification purposes. This ...
Breaking Biology News(10 mins):Samsung Galaxy S5 - Home Button Synaptics Fingerprint Sensor Technology Analysis 2Global Chemical Sensor Market 2015-2019: Key Vendors are Abbott Laboratories, Bayer, Hoffmann La-Roche, Johnson & Johnson, NGK Spark Plugs and Robert Bosch 2Biometrics Market in India 2015-2019: Key Vendors are 3M Cogent, NEC, Safran and Suprema 2
... Center report that the red panda is the first non-primate ... This unexpected affinity for an artificial sweetener may reflect ... The findings may shed light on how taste ... taste receptors. "The red panda,s unique taste receptor gives ...
... including antioxidant, immunomodulating, and photoprotectant properties. Carotenoid pigments ... colorants, and are responsible for most of their ... coloration in birds has been shown to act ... status of the individual and its ability to ...
... human cells that protect these against viral infections ... their rapid destruction and thus diminishes the cell,s supply. ... virologist Dr. Oliver Keppler demonstrated this mechanism for the ... for a novel treatment strategy. Another important ...
Cached Biology News:Red pandas reveal an unexpected (artificial) sweet tooth 2Red pandas reveal an unexpected (artificial) sweet tooth 3HIV dearms protective protein in cells 2HIV dearms protective protein in cells 3
(Date:12/19/2014)... Lawrence, MA (PRWEB) December 19, 2014 ... flow MRLAFMQ test for the Detection of Aflatoxin M1 ... test to receive independent third party validation. The peer ... Science Unit of the Institute for Agricultural and Fisheries ... Francis Group. , Aflatoxin B1, the most toxic ...
(Date:12/19/2014)... EVANSTON, Ill. , Dec. 19, 2014 ... to develop novel drugs for diseases of the central ... Ph.D., president and chief executive officer, will present at ... Dr. Riedel,s presentation will take place at 3:00 p.m. ... St. Francis in San Francisco, Calif. ...
(Date:12/19/2014)... , Dec. 19, 2014 Bina Technologies, Inc. (Bina, ... today that they have been acquired by Roche (SIX: ... a privately held company that provides a big data ... sequencing (NGS) data for the academic and translational research ... Unit, and will continue to focus on development of ...
(Date:12/19/2014)... 2014 Research and Markets ( ... "Technology Innovations in Smart Fabrics (Technical Insights)" ... http://photos.prnewswire.com/prnh/20130307/600769 The Research ... a detailed assessment on technological advancements and market ... 1. The Smart Fabrics market is ...
Breaking Biology Technology:Charm Sciences Achieves Independent Validation of First 15 Minute Quantitative Screening Method for Aflatoxin M1 2Naurex to Present at 33rd Annual J.P. Morgan Healthcare Conference 2Bina Technologies is acquired by Roche. 2Bina Technologies is acquired by Roche. 3Technology Innovations in Smart Fabrics (Technical Insights) 2
... , Ambion scientists have engineered a mutant ... production of full-length cDNA. This engineered reverse transcriptase, , ... href="http://www.ambion.com/catalog/CatNum.php?2048">ArrayScript , ... cDNA than wild type RTs, and rivals even the newest engineered RTs on , ...
... Generated From Both mRNA , ... Clustering analysis is commonly used for interpreting microarray data. ... and a method for measuring , similarity between experiments (gene ... are: Hierarchical, K-means and Self-organizing map. In this article, , ...
... Ambion now offers a complete Gene Expression ... From basic data analysis to our Full Service offering, , ... Full Service offering includes , consultation with ... and comprehensive data analysis. Ambion's long history of providing innovative, ...
Cached Biology Technology:ArrayScript RT: Maximize Yields of Full-length cDNA 2ArrayScript RT: Maximize Yields of Full-length cDNA 3Analysis of Microarray Data 2Analysis of Microarray Data 3Analysis of Microarray Data 4Analysis of Microarray Data 5Analysis of Microarray Data 6Analysis of Microarray Data 7Ambion Offers Gene Expression Profiling Service 2Ambion Offers Gene Expression Profiling Service 3
... potential applications for the use of small ... expression via the RNA interference (RNAi) pathway ... and molecular biology fields. siRNA for experimental ... chemically or enzymatically, and then transfected into ...
... (GST) is commonly used as a fusion ... (1). The GSTTag sequence has been reported ... cases the solubility of its fusion partners. ... form, GSTTag fusion proteins can be purified ...
a1-Antitrypsin (human, alpha-1 AT)...
... 7500ce meets the demands of the routine ... performance from reliable, robust and simple to ... power in the most challenging sample matrices ... equally suited to the toughest analytical challenges ...
Biology Products: