نتایج جستجو برای: swift
تعداد نتایج: 6213 فیلتر نتایج به سال:
The Swift gamma-ray burst explorer was launched on Nov. 20, 2004 from Cape Canaveral, Florida. The first instrument onboard became fully operational less than a month later. Since that time the Burst Alert Telescope (BAT) on Swift has detected more than 180 gamma-ray bursts (GRBs), most of which have also been observed within two minutes by the Swift narrow-field instruments: the X-Ray Telescop...
Results are presented of early X-ray afterglow observations of GRB 060105 by Swift and Suzaku. The bright, long gamma-ray burst GRB 060105 triggered the Swift Burst Alert Telescope (BAT) at 06:49:28 on 5 January 2006. The Swift X-Ray Telescope (XRT) started pointed observations 87 s after the trigger (T0). The Suzaku team commenced a pre-planned target of opportunity observation at 19 ks (5.3 hr)
The measured redshifts of gamma-ray bursts (GRBs), which were first detected by the Swift satellite, seem to be bigger on average than the redshifts of GRBs detected by other satellites. We analyzed the redshift distribution of GRBs triggered and observed by different satellites (Swift[1], HETE2[2], BeppoSax, Ulyssses). After considering the possible biases significant difference was found at t...
Fig.4 Images of a tooth at different intensity scale and resolution phantom and a piece of rubber (red arrows) obtained by SWIFT and gm=0.8 for GM-SWIFT. 1721 Gradient-modulated SWIFT for SAR reduction and controlled short-T2* sensitivity Jinjin Zhang, Djaudat Idiyatullin, Curtis Corum, Naoharu Kobayashi, and Michael Garwood Center for Magnetic Resonance Research, University of Minnesota, Minne...
the task of building adaptive system software relies on wizardry. Feedback controls for such software systems are written in an ad-hoc manner and are often brittle. As a result, it is difficult to move an existing control, such as TCP flow control [1], to a new domain such as admission control for CPU scheduling. In addition , existing controls are built with implicit assumptions about the syst...
On 23 November 1981, the Packers Consent Decree of 1920 was terminated on the joint motion of the Justice Department and Swift Independent Packing Company. This ended a long legal battle that began shortly after the decree was signed. The decree, agreed to by the old Big Five (Armour, Cudahy, Morris, Swift, and Wilson), became progressively less effective as the meatpacking industry evolved. By...
We compute the probability to detect long Gamma Ray Bursts (GRBs) at z ≥ 5 with Swift, assuming that GRBs form preferentially in low–metallicity environments. The model fits well both the observed BATSE and Swift GRB differential peak flux distribution and is consistent with the number of z ≥ 2.5 detections in the 2–year Swift data. We find that the probability to observe a burst at z ≥ 5 becom...
Coordination among actors in a humanitarian relief supply chain decides whether a relief operation can be or successful or not. In humanitarian supply chains, due to the urgency and importance of the situation combined with scarce resources, actors have to coordinate and trust each other in order to achieve joint goals. This paper investigated empirically the role of swift trust as mediating va...
Many of the high-performance computing (HPC) systems use a centralized storage system that is separate from the compute system. This approach is not going to be scalable as we seek to achieve exa-scale performance[6]. Distributed file systems can provide the scalability needed for exa-scale computing. FusionFS is a file system designed for HPC systems that achieves scalability in part by removi...
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