Random Generator

TRIPOLI® and TRIPOLI-4® are registered trademarks of CEA.International audienceAlthough the Monte Carlo (MC) codes are natural users of the fast growing capacities in High PerformanceComputing (HPC), adapting production level codes such as TRIPOLI-4 to the hexascale is very challenging. Wepresent here the dual strategy we follow new thoughts and developments for the next versions of TRIPOLI-4, aswell as insights on a prototype of next generation Monte Carlo (NMC) designed from the beginning with hexascalein mind.The Random Generators of the code will also be presented as well as the strategy of verificationof the parallelism

In a paper, entitledBinary lambda calculus and combinatory logic, John Tromp presents a simple way of encoding lambda calculus terms as binary sequences. In what follows, we study the numbers of binary strings of a given size that represent lambda terms and derive results from their generating functions, especially that the number of terms of sizengrows roughly like 1.963447954. . .n. In a second part we use this approach to generate random lambda terms using Boltzmann samplers.

Background: Component-based modeling language Modelica (OpenModelica is open source implementation) is used for the numerical simulation of complex processes of different nature represented by ODE system. However, in OpenModelica standard library there is no routines for pseudo-random numbers generation, which makes it impossible to use for stochastic modeling processes. Purpose: The goal of this article is a brief overview of a number of algorithms for generation a sequence of uniformly distributed pseudo random numbers and quality assessment of the sequence given by them, as well as the ways to implement some of these algorithms in OpenModelica system. Methods: All the algorithms are implemented in C language, and the results of their work tested using open source package DieHarder. For those algorithms that do not use bit operations, we describe there realisation using OpwnModelica. The other algorithms can be called in OpenModelica as C functions Results: We have implemented and tested about nine algorithms. DieHarder testing revealed the highest quality pseudo-random number generators. Also we have reviewed libraries Noise and AdvancedNoise, who claim to be adding to the Modelica Standard Library. Conclusions: In OpenModelica system can be implemented generators of uniformly distributed pseudo-random numbers, which is the first step towards to make OpenModelica suitable for simulation of stochastic processes.

In passive RFID systems, tag receives energy for communication from the reader, in the absence of on-chip energy source. Hence, a good amount of energy is needed to be transmitted by the transceiver circuit to provide energy to the transponder. Hence, circuit-level energy consumption cannot be ignored in the total energy consumption evaluation of passive RFID systems. Previously, energy consumption evaluation for passive tag anticollision algorithm has been done ignoring circuit-level energy consumption values. This may provide inaccurate results. Here in this paper, an energy consumption evaluation framework for EPC class 1 Gen 2 (passive) based tag anti-collision algorithm has been proposed. This proposed framework includes energy consumed by transceiver and transponder circuits, in total energy consumption estimation for better accuracy.

In the absence of generally acknowledged metrics in the public area that could be used to compute and spell out cryptographic strength, a small operational group agreed to look at the possibility of developing an approach to cryptographic metrics The purpose of this paper is to report the results of the limited exploratory effort by above operational group that investigated the practicality of developing metrics for use in specifying the strength of cryptographic algorithms. TORDES deals with a small sample of selected symmetric cipher block encryption algorithms.

This paper presents on digital baseband processor implementation for RFID tags as it has been applied into many areas, including passports, transportation payment, product tracing, automotive as well as animal identification etc. Nowadays the applications of RFID are increasing rapidly, including supply chain management, access control to buildings, public transportation, open-air events, airport baggage and so on. To meet the market requirements, the preferred RFID system must exhibit features like low cost, long operation range and high data rate, requiring a small and low-voltage/low-power integrated circuits. A low power implementation of a secure EPC UHF passive digital base band processor will be designed for UWB transceiver on RFID for wireless application. To ensure the secure information transaction of the passive tag, traditionally the focus is on directly applying a low complexity encryption engine. The attackers could make use of known header to reveal the secret key. The proposed architecture consists of a novel clock and data flow solution enforced by an anti-collision algorithm engine embedded inside the RFID passive tag. Low power design techniques such as clock gating, optimal clock driving and parallel operation will be used in the design of the tag. The complete digital baseband processor RFID tag consists of a receive and transmit buffer a controller unit to control the data and clock, slot and reset counter ,random generator, comparator and memory controller. Increased power consumption, is one of the important factors, which governs the performance of the ICs in Ultra Deep Sub Micron (UDSM) regime. The hardware model of the complete digital baseband processor is modeled using verilog HDL code.

This Paper deals with the solution for collision detection in the area of industrial machines. Now a day's, the world is focusing to improve the industries with automation. In order for the automation, the requirement of workers will decrease and time-consuming to do the job is also decrease but protecting the device from collision becomes difficult because sometimes we require more than one system to complete the work in small areas. In these situations, there will be a collision between those machines. Due to this collision, devices can cause damage to the equipment's as well as the workers in that field. Thus collision detection and collision avoidance are very important so that we provide the anti-collision solution. In this paper, we describe the theoretical introduction, practical solution and also real application.