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:4/17/2017)... 2017 NXT-ID, Inc. (NASDAQ: NXTD ) ... of its 2016 Annual Report on Form 10-K on Thursday April ... ... in the Investor Relations section of the Company,s website at ... at http://www.sec.gov . 2016 Year Highlights: ...
(Date:4/11/2017)... April 11, 2017 Crossmatch®, a globally-recognized ... solutions, today announced that it has been awarded ... Projects Activity (IARPA) to develop next-generation Presentation Attack ... "Innovation has been a driving force within ... will allow us to innovate and develop new ...
(Date:4/11/2017)... April 11, 2017 NXT-ID, Inc. (NASDAQ: ... company, announces the appointment of independent Directors Mr. Robin ... its Board of Directors, furthering the company,s corporate governance and ... Gino Pereira ... look forward to their guidance and benefiting from their considerable ...
Breaking Biology News(10 mins):
(Date:10/11/2017)... ... 11, 2017 , ... Personal eye wash is a basic first aid supply for any work ... which eye do you rinse first if a dangerous substance enters both eyes? It’s one ... with its unique dual eye piece. , “Whether its dirt and debris, or an ...
(Date:10/11/2017)... a leading provider of patient support solutions, has announced the ... which will launch this week. The VMS CNEs will address ... enhance the patient care experience by delivering peer-to-peer education programs ... to help women who have been diagnosed and are being ... ...
(Date:10/11/2017)... , ... October 11, 2017 , ... ... the implantation and pregnancy rates in frozen and fresh in vitro fertilization ... progesterone and maternal age to IVF success. , After comparing the results from ...
(Date:10/10/2017)... CA (PRWEB) , ... October ... ... a development-stage cancer-focused pharmaceutical company advancing targeted antibody-drug conjugate (ADC) therapeutics, today ... of targeted HPLN (Hybrid Polymerized Liposomal Nanoparticle), a technology developed in collaboration ...
Breaking Biology Technology:
Cached News: