HOME >> BIOLOGY >> NEWS
Physics tip sheet #42

1) Time Reversed Signals for Future Cell Phones
G. Lerosey et al.
Physical Review Letters, 14 May 2004
http://link.aps.org/abstract/PRL/v92/e193904
http://link.aps.org/abstract/PRL/v92/e193904

In recent years, researchers have found that they can improve acoustic signal transmission in complex environments with a technique known as time reversal. In effect, they broadcast a signal to determine how it propagates through an arrangement of obstructions, and then send a reversed version of the signal back from the detectors to the original source. Now researchers at the Laboratoire Ondes et Acoustique in Paris have managed to apply the same technique to electromagnetic signals at 2.45 GHz, a frequency close to the operating range of cell phones. The experiment heralds the possibility of improving cell phone communications in cities and other environments where obstructions, such as skyscrapers, may eventually aid cellular performance rather than hindering it.

2) Exploiting Noise to Increase Profits
A. Traulsen et al.
Physical Review Letters (to appear)

The interactions between populations with different ambitions (shoppers and sellers, attackers and defenders, men and women) can lead to intricate and complicated dynamics as competitors struggle to adapt and gain an advantage. Researchers at the Christian-Albrechts University in Germany now find that it's not only beneficial for competitors to adapt, but it can also be helpful for them to adjust the rate at which they adapt. The researchers studied competition in numerical models that included random fluctuations, i.e. statistical noise. They found that flexible competitors who adjust their adaptation rate could improve their prosperity in noisy systems. The researchers suggest that their model may have important economic implicatio
'"/>

Contact: James Riordon
riordon@aps.org
301-209-3238
American Physical Society
24-May-2004


Page: 1 2 3 4 5

Related biology news :

1. Physics gravity model applicable to disease spread
2. Physics tip sheet #41 - April 5, 2004
3. Physics tip sheet #39 - Nov. 17, 2003
4. Physics tip sheet #37
5. Physics tip sheet #36 - July 30, 2003
6. Physics tip sheet #34 - April 1, 2003
7. Physics tip sheet #33 March 28, 2003
8. Physics tip sheet #30 - January 9, 2003
9. Physics tip sheet #29 October 23, 2002
10. Physics tip sheet #21 July 10, 2002
11. Physics tip sheet #20 July 3, 2002

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:5/16/2017)...   Bridge Patient Portal , an enterprise ... EMR Systems , an electronic medical record solutions ... established a partnership to build an interface between ... Centricity™ products, including Centricity Practice Solution (CPS), Centricity ... new integrations will allow healthcare delivery networks using ...
(Date:4/18/2017)... Calif. , April 18, 2017  Socionext Inc., a global ... of a media edge server, the M820, which features the company,s ... recognition software provided by Tera Probe, Inc., will be showcased during ... at the NAB show at the Las Vegas ... ...
(Date:4/11/2017)... BEACH GARDENS, Fla. , April 11, 2017 ... identity management and secure authentication solutions, today announced ... contract by Intelligence Advanced Research Projects Activity (IARPA) ... for IARPA,s Thor program. "Innovation has ... onset and IARPA,s Thor program will allow us ...
Breaking Biology News(10 mins):
(Date:10/12/2017)... ... October 12, 2017 , ... ... of a United States multicenter, prospective clinical study that demonstrates the accuracy ... test capable of identifying clinically significant acute bacterial and viral respiratory tract ...
(Date:10/11/2017)... ... October 11, 2017 , ... The ... context, enabling overexpression experiments and avoiding the use of exogenous expression plasmids. The ... transformative for performing systematic gain-of-function studies. , This complement to loss-of-function studies, ...
(Date:10/11/2017)... and LAGUNA HILLS, Calif. , ... of Cancer Research, London (ICR) and ... with SKY92, SkylineDx,s prognostic tool to risk-stratify patients with multiple ... as MUK nine . The University of ... is partly funded by Myeloma UK, and ICR will perform ...
(Date:10/10/2017)... (PRWEB) , ... October 10, ... ... development-stage cancer-focused pharmaceutical company advancing targeted antibody-drug conjugate (ADC) therapeutics, today confirmed ... targeted HPLN (Hybrid Polymerized Liposomal Nanoparticle), a technology developed in collaboration with ...
Breaking Biology Technology:
Cached News: