A new approach to exploring the spread of contagious diseases or the latest celebrity gossip has been tested using London’s street and underground networks. Results from the new approach could help to predict when a contagion will spread through space as a simple wave (as in the Black Death) and when long-range connections, such as air travel, enable it to seemingly jump over long distances and emerge in locations far from an initial outbreak.
ENERGY DEPENDENCE OF THE RATIO OF CALCIUM GROUP TO IRON GROUP NUCLEI IN LOW-ENERGY (50-MEV/AMU - 150-MEV/AMU) COSMIC RAYS. (TALK)
Durgaprasad, N
Venkatavaradan, V
Sarkar, S
Biswas, S
(1979)
OBSERVATIONS OF RELATIVISTIC IRON GROUP NUCLEI OF COSMIC RAYS IN CR-39 TRACK DETECTOR. (TALK, ABSTRACT ONLY)
Biswas, S
Durgaprasad, N
Sarkar, S
Venkatavaradan, V
(1979)
A lower limit to the magnetic field in Cassiopeia-A
Cowsik, R
Sarkar, S
Monthly Notices of the Royal Astronomical Society
volume 191
issue 4
855-861
(01 Aug 1980)
Does the galactic synchrotron radio background originate in old supernova remnants?
Sarkar, S
Monthly Notices of the Royal Astronomical Society
volume 199
issue 1
97-108
(01 May 1982)
The evolution of supernova remnants as radio sources
Cowsik, R
Sarkar, S
Monthly Notices of the Royal Astronomical Society
volume 207
issue 4
745-775
(01 Apr 1984)