نتایج جستجو برای: z track
تعداد نتایج: 212525 فیلتر نتایج به سال:
The cosmic γ-ray burst (GRB) formation rate, as derived from the variabilityluminosity relation for long-duration GRBs, is compared with the cosmic star formation rate. If GRBs are related to the collapse of massive stars, one expects the GRB rate to be approximately proportional to the star formation rate. We found that these two rates have similar slopes at low redshift. This suggests that GR...
This paper provides a brief description of a constraint-based solver that was applied by the author to the problem instances in all three tracks of the International Timetabling Competition 2007.
The purpose of this study was to identify consistent features in the signals supplied by a single inertial measurement unit (IMU), or thereof derived, for the identification of foot-strike and foot-off instants of time and for the estimation of stance and stride duration during the maintenance phase of sprint running. Maximal sprint runs were performed on tartan tracks by five amateur and six e...
Abstract We define here a directed edge reinforced random walk on connected locally finite graph. As the name suggests, this keeps track of its past, and gives bias towards edges previously crossed proportional to exponential number crossings. The model is inspired by so called Ant Mill phenomenon , in which group army ants forms continuously rotating circle until they die exhaustion. For that ...
During observations with the Rossi X-ray Timing Explorer from June 31st to July 3rd 1997 we discovered two simultaneous kHz QPOs near 500 Hz and 860 Hz in the low-mass X-ray binary and Z source Cygnus X-2. In the X-ray color-color diagram and hardness-intensity diagram (HID) a clear Z track was traced out, which shifted in the HID within one day to higher count rates at the end of the observati...
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