A Study on Athletic Performance of School Going Students

The purpose of the study was to find out the athletic performance of school level athlete. The study was confined to the age group of 14 -16 years, 54 boys and 54 girls from the record book of Bidhan Nagar sub-division sports association of district of North 24 Parganas of the state in West Bengal were selected for the purpose. The study was to compare the performance among the men athletes and among the women athletes of three consecutive years (2010, 11 and 12) and also the trend of performance. The criterion measure adopted in this study were speed (time taken to cover contain distance), strength of muscles (distance covered in jumping and throwing), explosive leg strength (height attained in high jumps). Mean and standard deviation were used as descriptive statistics in the present study. For statistical calculation Excel Spread Sheet of windows version 7 was used. The results of the present study indicated that there was no consistency in performance of various events in different years. One more note worthy points is that it was observed that the level of ability of the athletes were not same. Thus the quality of movement, level of coordination, speed of skill learning and stabilization of technique became different. Those factors were a direct effect on the performance

Effects of Phase Transition induced density fluctuations on pulsar dynamics

We show that density fluctuations during phase transitions in pulsar cores may have non-trivial effects on pulsar timings, and may also possibly account for glitches and anti-glitches. These density fluctuations invariably lead to non-zero off-diagonal components of the moment of inertia, leading to transient wobbling of star. Thus, accurate measurements of pulsar timing and intensity modulations (from wobbling) may be used to identify the specific pattern of density fluctuations, hence the particular phase transition, occurring inside the pulsar core. Changes in quadrupole moment from rapidly evolving density fluctuations during the transition, with very short time scales, may provide a new source for gravitational waves.Comment: 9 pages, 1 figure. arXiv admin note: substantial text overlap with arXiv:1412.427

Performance Bounds for LASSO under Multiplicative Noise: Applications to Pooled RT-PCR Testing

Group testing is a technique which avoids individually testing $n$ samples for a rare disease and instead tests $n < p$ pools, where a pool consists of a mixture of small, equal portions of a subset of the $p$ samples. Group testing saves testing time and resources in many applications, including RT-PCR, with guarantees for the recovery of the status of the $p$ samples from results on $n$ pools. The noise in quantitative RT- PCR is inherently known to follow a multiplicative data-dependent model. In recent literature, the corresponding linear systems for inferring the health status of $p$ samples from results on $n$ pools have been solved using the Lasso estimator and its variants, which have been typically used in additive Gaussian noise settings. There is no existing literature which establishes performance bounds for Lasso for the multiplicative noise model associated with RT-PCR. After noting that a recent general technique, Hunt et al., works for Poisson inverse problems, we adapt it to handle sparse signal reconstruction from compressive measurements with multiplicative noise: we present high probability performance bounds and data-dependent weights for the Lasso and its weighted version. We also show numerical results on simulated pooled RT-PCR data to empirically validate our bounds.Comment: Signal Processing Journal under revie