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A new knapsack type public key cryptosystem is proposed by constructing an easy knapsack problem. The cryptosystem is shown to be secure against Shamir's key recovery attack in that it does not use a super-increasing knapsack sequence in the construction process. The cryptosystem is also invulnerable to low density attack in that it obtains a relatively high density. It is shown that the cryptosystem...
The electromagnetic environment of the high voltage direct current (HVDC) is much more complex than ever. The electromagnetic compatibility (EMC) of the printed circuit board (PCB) in the secondary equipments is the top priority. In this paper, finite integration theory (FIT) methods are applied to analyse the resisting electro magnetic interference (EMI) of the PCB in high frequency. The model bases...
In this paper, we analyzed the electromagnetic disturbance of plusmn 500 kV valve tower by electromagnetic field calculating software, which based on the instantaneous method, but also including the space electromagnetic field and the radio interference level. And then, we compare the radiated electric field strength with the relevant standards, its comparison with observed result is being studied...
In this paper we have applied TLM methods to the analysis of the effects of the slot with the structure of overlapping and riveting on the shielding effectiveness of shielding body. And we have verified its correctness from the algorithm and experiment. According to the simulation results, it is showed that handling the slot with a riveting and overlapping structure helps to suppress the leakage of...
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