This paper works on the collective behavior of multi-agent systems under digital networks. It is assumed that the agents are distributed on a plane and communicate through a digital network. The location coordinates of each agent are measured by some remote sensor and transmitted digitally to its neighbors. The topology of communication network is described by an undirected graph and control pr...

A cyber physical system (CPS) is a complex system that integrates computation, communication, and physical processes. Digital manufacturing is a method of using computers and related technologies to control an entire production process. Industry 4.0 can make manufacturing more efficient, flexible, and sustainable through communication and intelligence; therefore, it can increase the competitive...

The Digital on-demand Computing Organism (DodOrg) is a novel system concept based on biological concepts. Major part of DodOrg is a sophisticated monitoring infrastructure spanning all system layers from hardware to application, providing necessary information for system surveillance and the adaptive processes triggered by an organic middleware and the low-power planning. The Digital on-demand ...

In this paper, we present a new method of digital steganography, entitled spread spectrum image steganography (SSIS). Steganography, which means "covered writing" in Greek, is the science of communicating in a hidden manner. Following a discussion of steganographic communication theory and review of existing techniques, the new method, SSIS, is introduced. This system hides and recovers a messa...

The availability of fast and reliable Digital Identities is an essential ingredient for the successful implementation of the public-key infrastructure of the Internet. All digital identity schemes must include a method for revoking someone's digital identity in the case that this identity is stolen (or canceled) before its expiration date (similar to the cancelation of a credit-cards in the cas...

Quadrature Amplitude Modulation (QAM) is used in both analog and digital communication. In this technique, both amplitude and phase varies of carrier wave with respect to digital data or information. It provides high data rate for transmission. QAM is used in many application like color television, Wi-Max, OFDM (Orthogonal Frequency Division Multiplexing), and in digital satellite communication...

Digital photography is a relatively new topic for scholarly study in the area of computer mediated communication. Photographic technologies were only first computerized in the 1990s, but have rapidly supplanted older film technologies for a majority of professional uses. Digital photography has not simply substituted silicon chips for film, however, but has brought about rapid changes throughou...

An integrated control system has disparate and spatially distributed subsystems interconnected via a common communication channel. Digital data from sensor to controller and from controller to actuator are multiplexed along with traffic from other control loops and management functions. The asynchronous time-division multiplexing introduces time-varying and possibly stochastic delays in the con...

This paper proposes a “privacy conscious” video communication system utilizing core technology of the JPEG2000 international standard for digital image data compression. The system works not only as a conventional video communication tool but also serves as an “awareness communication” tool. In addition, bit rate for transmitting video data and hardware complexity of the system are also reduced...

Autism spectrum disorder has become one of the most prevalent developmental disorders and one of the main impairments is difficulty with communication. One method of augmentative and alternative communication is the use of the Picture Exchange Communication System (PECS) to create messages using a series of images printed on cards and organized in binders. We are developing a digital alternativ...