beryllium chemical combination has a considerable effect on the design and fabrication of the241am9be neutron source. in this investigation the beryllium combinations were studied as a generator ofneutrons with various mass percentage, and the neutron yields were also calculated using the results of thealice and srim codes calculations per unit incident charge. the neutron yields of beryllium ...

A. Bercuci1,3, M. Fasel2, and M. Ivanov1 1GSI, Darmstadt, Germany; 2Technische Universitaet, Darmstadt, Germany; 3On leave from NIPNE, Bucharest, Romania The algorithm for tracking is the backbone of the reconstruction procedure of the TRD detector of the ALICE experiment at LHC at CERN. Its performance has immediate influence on other reconstruction tasks such as calibration, alignment and par...

In a typical lattice QCD project the total runtime of code on a supercomputing platform is often measured in months or even years. This means that even a modest improvement in the performance of the code can yield very tangible benefits. There are two aspects to the optimisation of code for parallel machines: single-node optimisation and the minimisation of the overhead incurred by inter-node c...

Alice, a deaf girl who was implanted after age three years of age was exposed to four weeks of storybook sessions conducted in American Sign Language (ASL) and speech (English). Two research questions were address: (1) how did she use her sign bimodal/bilingualism, codeswitching, and code mixing during reading activities and (2) what sign bilingual code-switching and code-mixing strategies did ...

For thousands of years, code-makers and code-breakers have been competing for supremacy. Their arsenals may soon include a powerful new weapon: quantum mechanics. Cryptography — the art of code-making — has a long history of military and diplomatic applications, dating back to the Babylonians. In World World Two, the Allies' feat of breaking the legendary German code, Enigma, contributed greatl...

For thousands of years, code-makers and code-breakers have been competing for supremacy. Their arsenals may soon include a powerful new weapon: quantum mechanics. Cryptography — the art of code-making — has a long history of military and diplomatic applications, dating back to the Babylonians. In World World Two, the Allies' feat of breaking the legendary German code, Enigma, contributed greatl...

In this paper, we investigate multi-message authentication to combat adversaries with infinite computational capacity. An authentication framework over a wiretap channel (W1,W2) is proposed to achieve information-theoretic security with the same key. The proposed framework bridges the two research areas in physical (PHY) layer security: secure transmission and message authentication. Specifical...

Natural Cu target was irradiated with proton beam in the energy range of 15 to 30 MeV at a beam current of 100 μA for 15 min. In this irradiation radioisotope of 62Zn was produced as a generator and then decayed to Cu radioisotope. The Cu is emitting β+ and known as PET radioisotope. Excitation function of Cu via Cu (p, 2n) Zn, Cu and Cu (d, 3n) Zn reactions were calculated using Alice and Taly...