Due to the lack of mature design program for the tubular permanent magnet linear wave generator (TPMLWG) and poor sinusoidal characteristics of the air gap flux density for the traditional surface-mounted TPMLWG, a design method and a new secondary structure of TPMLWG are proposed. An equivalent mathematical model of TPMLWG is established to adopt the transformation relationship between the lin...

In this paper we explore pseudo-random number generation on the IBM 4758 Secure Crypto Coprocessor. In particular we compare several variants of Gennaro's provably secure generator, proposed at Crypto 2000, with more standard techniques based on the SHA-1 compression function. Our results show how the presence of hardware support for modular multiplication and exponentiation aaects these algori...

A new procedure for digital image classi® cation is described. The procedure, labelled Classi ® cation by Progressive Generalization (CPG), was developed to avoid drawbacks associated with most supervised and unsupervised classi® cations. Using lessons from visual image interpretation and map making, non-recursive CPG aims to identify all signi® cant spectral clusters within the scene to be cla...

In this paper, the evaluation of random bit generators for security applications is discussed and the concept of stateless generator is introduced. It is shown how, for the proposed class of generators, the verification of a minimum entropy limit can be performed directly on the post-processed random numbers thus not requiring a good statistic quality for the noise source itself, provided that ...

A random number generator generates fair coin flips by processing deterministically an arbitrary source of nonideal randomness. An optimal random number generator generates asymptotically fair coin flips from a stationary ergodic source at a rate of bits per source symbol equal to the entropy rate of the source. Since optimal noiseless data compression codes produce incompressible outputs, it i...

In this paper, a novel voltage control strategy of stand-alone operation brushless doubly 9 fed induction generator for variable speed constant frequency wind energy conversion systems 10 was presented and discussed particularly. Based on the model of the generator power system, the 11 proposed direct flux control strategy employs a nonlinear reduced-order generalized integrator 12 based resona...

For the sake of studying the electromagnetic properties of doubly-fed turbine generator. This paper proposed a method which adds an equivalent impedance to simulate the doubly-fed turbine generator’s rated state in Maxwell Circuit Editor. Time–stepping finite element was adopted to calculate. Transfer radial air-gap flux density as FFT, getting harmonic content and the influence of harmonic wav...

In this paper, a packet generator using a pattern matching algorithm for real-time abnormal heartbeat detection is proposed. The packet generator creates a very small data packet which conveys sufficient crucial information for health condition analysis. The data packet envelopes real time ECG signals and transmits them to a smartphone via Bluetooth. An Android application was developed specifi...

We address the problem of code size minimization in VLSI systems with embedded DSP processors. Reducing code size reduces the production cost of embedded systems. We use data compression methods to develop code size minimization strategies. We present a framework for code size minimization where the compressed data consists of a dictionary and a skeleton. The dictionary can be computed using po...