Crosstalk and transitions between multiple spatial maps in an attractor neural network model of the hippocampus: Phase diagram
R. Monasson and S. Rosay
Phys. Rev. E 87, 062813 (2013)
Published June 20, 2013
Researchers at the École Normale Supérieure in Paris have simulated the behavior of networks of “place cells” that store memories of location and spatial maps in the brain. In additional to revealing that some noise (but not too much) in the network can improve its storage capacity, the authors find that encoding too many spatial maps in the network may cause the memories to slip away entirely.

Synopsis: Tabletop Particle Accelerator

NASA Chandra X-Ray Observatory/Harvard-Smithsonian Center for Astrophysics
Table-Top Laser-Based Source of Femtosecond, Collimated, Ultrarelativistic Positron Beams
G. Sarri, W. Schumaker, A. Di Piazza, M. Vargas, B. Dromey, M. E. Dieckmann, V. Chvykov, A. Maksimchuk, V. Yanovsky, Z. H. He, B. X. Hou, J. A. Nees, A. G. R. Thomas, C. H. Keitel, M. Zepf, and K. Krushelnick
Phys. Rev. Lett. 110, 255002 (2013)
Published June 20, 2013
Black holes and pulsars emit dense jets of particles that are made of electrons and positrons (the antiparticle of the electron). But many important and basic features of the jets remain unclear: What is their precise particle makeup? How much energy do they contain? How do the particles in the jets interact in the low-density environment of outerspace? The main difficulty in answering these questions is that astronomical systems can only be measured indirectly: the closest jet is almost 1024 miles away. As Gianluca Sarri from The Queen’s University of Belfast, Northern Ireland, and colleagues report in Physical Review Letters, a new tabletop method for generating electron-positron streams could bring measurements closer to home by enabling the scaled-down reproduction of matter-antimatter flows in the lab.

Simulations show that you can learn the meaning of words rapidly if you assume that every object has only one word associated with it.

How to Learn a Language Quickly

Atomic Interactions at a Distance

Simulations show that you can learn the meaning of words rapidly if you assume that every object has only one word associated with it.

High Energy and Astroparticle Physics

Chief editors. Jan de Boer and J.W.F. Valle

The Frontiers Journal Impact factors keep rising in 2011 according to the
Journal Citation Reports published by Thomson Reuters.

Frontiers Impact Factors 2011 

JEM-EUSO is a new type of observatory that uses the earth's atmosphere as a detector. JEM-EUSO will be on orbit on the International Space Station (ISS). It observes transient luminous phenomena taking place in the earth's atmosphere caused by particles coming from space. The sensor is a super wide-field telescope that detects extreme energy particles with energy above 3×1019 eV. This remote-sensing instrument orbits around the earth every 90 minutes on board of the International Space Station at the altitude of approximately 400km (Figure 1-1). The figure shows an extreme energy particle colliding with a nucleus in the earth's Atmosphere, where it produces an Extensive Air Shower (EAS), consisting of numerous electrons, positrons, and photons. JEM-EUSO captures the moving track, which is revealed by the fluorescent UV photons and reproduces the energy development of the EAS.

More info at

http://www.iac.es/congreso/JEM-EUSO/

Fermilab offers Intensity Frontier Fellowships to outstanding researchers in the areas of neutrino physics, muon physics, and other topics in the Intensity Frontier. Fellows will receive funding to allow enhanced participation in Fermilab experimental and data analysis efforts, in relevant areas of particle physics theory, or in future projects. The fellowships provide the ability for researchers to spend significant time at Fermilab working within the Intensity Frontier Department, with the goal of expanding and sustaining an intellectual center of excellence within the laboratory and the department.

We seek researchers with a doctorate in particle or nuclear physics who will use the resources available at Fermilab to make a major contribution to the Intensity Frontier in the areas of physics analysis of experiments, development of relevant particle physics theory, or development of future projects. The Fellowship provides an outstanding opportunity for young scientists to develop an independent research program.

Successful candidates will ordinarily be resident at Fermilab for 50% or more of the duration of the Fellowship.

Term: 6 months to 1 year.
Renewable to maximum of 2 years, with new proposal.
Financial support: up to 50% of researcher’s salary and fringe benefits, with remainder from researcher’s home institution.
Candidates must be employed by a U.S. or non-U.S. institution. Fermilab employees are not eligible.
Awards may include a travel budget to enable regular trips to remote experimental locations when appropriate, and to conferences to present work.

Source and More info : http://www.fnal.gov/pub/forphysicists/fellowships/intensity_frontier/index.html