A water distribution network is one of the important parts of infrastructure systems. The efficient management and proactive planning of capital investment of these assets are fundamental for efficient and effective service delivered by water companies. The direct economic costs (i.e. rehabilitation investment, repair costs, water loss, etc.) as well as indirect costs (i.e. service and traffic ...

This study attempts to investigate the nexus between investor sentiment and cryptocurrencies prices. Our empirical investigation merges bivariate multivariate wavelet tools examine inter-cryptocurrencies The outcomes show that Sentix Investor Confidence index provides significant information in explaining long-term changes Bitcoin Litecoin Moreover, findings generated from multiple coherence il...

Context. GRB 041219a is the brightest burst localised by INTEGRAL. The peak flux of 43 ph cm−2 s−1 (1.84 ×10−5 ergs cm−2 s−1, 20 keV– 8 MeV, 1 s integration) is greater than that for ∼98% of all bursts and the T90 duration of ∼186 s (∼20 keV–8 MeV) is longer than all but a small number of bursts. The intense burst occurred about ∼250 s after the precursor and the long delay enabled optical and ...

The Gamma-Ray Burst (GRB) prompt emission is believed to be from highly relativistic electrons accelerated in relativistic shocks. From the GRB high-energy power-law spectral indices β observed by the Burst and Transient Source Experiment (BATSE) Large Area Detectors (LAD), we determine the spectral index, p, of the electrons’ energy distribution. Both the theoretical calculations and numerical...

In wireless network environments, the effect of transmission errors and losses on the video quality vary, depending on the intensity of the burst, and which parts of the video stream are lost. Among the existing transmission error control techniques, FEC and ARQ represent good solutions for combating transmission errors, but require redundant data. Interleaving can improve subjective video qual...

Abstract High rock stress and ground temperature pose great threats to the routine production of longwall top coal caving (LTCC) panels. In this risky condition, width chain pillar is considered a factor adjustable for controlling burst goaf ignition hazards. However, contradiction, as suggested by experience, that narrowing helps prevention but negatively leads higher self-ignition potentials,...