This article continues the development of a hybrid scheme for simulating epitaxial growth that combines the Burton– Cabrera–Frank (BCF) model with kinetic Monte-Carlo (KMC) simulation. This is the first implementation of the scheme for ‘‘2+1’’ dimensional growth. Other improvements over an earlier version include the use of a more conventional KMC model and some refinement in the handling of th...

Encryption and watermarking are complementary lines of defense in protecting multimedia content. Recent watermarking techniques have therefore been developed independent from encryption techniques. In this paper, we present a hybrid image protection scheme to establish a relation between the data encryption key and the watermark. Prepositioned secret sharing allows the reconstruction of differe...

In this paper, we show that a key encapsulation mechanism (KEM) does not have to be IND-CCA secure in the construction of hybrid encryption schemes, as was previously believed. That is, we present a more efficient hybrid encryption scheme than Shoup [12] by using a KEM which is not necessarily IND-CCA secure. Nevertheless, our scheme is secure in the sense of IND-CCA under the DDH assumption in...

As digital halftone images are widely used in the printing of books, magazines, newspapers and computer printers, the ease with which perfect copies can be made, may lead to large-scale unauthorized copying. Watermarking has been considered for many copy prevention and copyright protection applications. The hybrid watermarking system is proposed for halftone images that the watermarks embedded ...

This paper describes a hybrid sub-band speech coding scheme based on sinusoidal coding and CELP. Purely voiced speech is encoded using sinusoidal coding techniques and phase information is selectively transmitted. For mixed and unvoiced speech, the lower band is processed by sinusoidal coding algorithms while the upper band is encoded using CELP. To accommodate the extra bandwidth required by t...

In this paper, we investigate an event based protection scheme for dc power system which includes hybrid energy sources. The proposed protection scheme requires less time when compared with other methods. In this method, fault can be isolated and efficiency can be improved. The performance of protection scheme was evaluated under the transmission lines.

The development of a hybrid control scheme for freeway systems is the objective of the paper. A finite number of models is defined, each relevant to a specific traffic condition. The system state variables are the differences between the traffic density and the traffic mean speed in each section and their desired values. A receding–horizon (RH) regulator is defined for each model being the cont...