نتایج جستجو برای: geant
تعداد نتایج: 218 فیلتر نتایج به سال:
Infrastructure as a Service (IaaS) is one of the provisioning models for Clouds as defined in the NIST Clouds definition. Although widely used, current IaaS implementations and solutions doesn’t have common and well defined architecture model. The paper attempts to define a generic architecture for IaaS based on current research by authors in developing novel architectural framework for Infrast...
We report on a measurement of the neutron detection efficiency in NaI crystals in the Crystal Ball (CB) detector obtained from a study of p p !p8n reactions at the Brookhaven National Laboratory AGS. A companion *Corresponding author. Tel.: +1-219-464-5377; fax: +1-219-464-5489. E-mail address: [email protected] (D.D. Koetke). Present Address: Indiana University Cyclotron Facility, Bloomi...
The φ-meson production cross section is measured for the first time at a subthreshold energy of 1.93 AGeV in Ni+Ni central collisions. The φ data were obtained within the acceptance of the CDC/Barrel subsystem of FOPI. For a sample of 4.7 · 10 central events, after background subtraction, 23 candidates were observed. Extensive GEANT simulations of the detector performance are shown in a thoroug...
Energy efficiency has become a major research topic in the Internet community as a result of unprecedented rise in the Information and Communication Technology (ICT) sector. One typical approach towards energy efficiency is to select a subset of IP routers or interfaces that will go to sleep mode during the off-peak period. However, on-the-fly network reconfiguration is generally deemed harmful...
A precision measurement of atmospheric electron fluxes has been performed on a Japanese commercial airliner (Enomoto, et al., Ref. [1]). The bulk of these electrons are produced in pairs from the gamma rays emitted when π0s decay, which in turn have been produced in cosmic ray-air nucleus collisions. These electron fluxes can be used to test elements of our atmospheric neutrino flux calculation...
GEANT4 based Monte Carlo sim u la tions have been car ried out for the de ter mi na tion of ef fi ciency and con ver sion fac tors of a gas-flow ion iza tion cham ber for beta par ti cles emit ted by 86 dif fer ent ra dio iso topes cov er ing the av er age-b en ergy range of 5.69 keV-2.061 MeV. Good agree ments were found be tween the GEANT4 pre dicted val ues and cor re spond ing ex per i men ...
BACKGROUND Five percent of pancreatic neoplasms are non- adenocarcinoma tumors. Clinical presentation and imaging characteristics of these tumors are similar to adenocarcinoma. This study aims at evaluating the results and efficacy of Endoscopic ultrasound guided fine needle aspiration (EUS-FNA) in diagnosing the pancreatic non-adenocarcinoma tumor in patients with solid pancreatic mass. METH...
The φ-meson production cross section is measured for the first time at a subthreshold energy of 1.93 AGeV in Ni+Ni central collisions. The φ data were obtained within the acceptance of the CDC/Barrel subsystem of FOPI. For a sample of 4.7 · 10 central events, after background subtraction, 23 candidates were observed. Extensive GEANT simulations of the detector performance are shown in a thoroug...
The standard Super-Kamiokande analysis uses an estimator for particle identification by which it discriminates e (νe) from μ(νμ). Use of this estimator has led to the claim of a significant deficiency of μ (νμ), suggesting the existence of neutrino oscillations. We investigate three areas of concern for the Super-Kamiokande estimator: the separation of the spatial part from the angular part in ...
We report results of an experiment conducted in May 1997 to measure CdZnTe background and background reduction schemes in space flight conditions similar to those of proposed hard X-ray astrophysics missions. A 1 cm CdZnTe detector was placed adjacent to a thick BGO anticoincidence shield and flown piggybacked onto the EXITE2 scientific balloon payload. The planar shield was designed to veto ba...
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