In classical Formal Language Theory, “centralised” grammar systems and automata were the standard models for computation devices. With the rapid growth of computer networks, distributed databases, etc, distributed computation has begun to play a major role in modern computer science. The theory of grammar systems and distributed-automata was thus developed as a model for distributed computation...

Information and communication technology (ICT) tools are known to facilitate communication and processing of information and sharing of knowledge by electronic means. In Nigeria, the lack of adequate capacity on the use of ICT by health sector policymakers constitutes a major impediment to the uptake of research evidence into the policymaking process. The objective of this study was to improve ...

A complete weak-degradability analysis of one-mode Gaussian Bosonic channels is performed. A new set of channels which have null quantum capacity is identified. Due to their relatively simple structure Gaussian channels [1] provide an ideal theoretical playground for the study of quantum communication protocols [2]. Bounds and, in some cases, explicit values for the classical [3] or quantum [4]...

The GEneral Tokamak THErmal-hydraulic Model – GETTHEM has been updated to the most recent version of the EU DEMO Helium-Cooled Pebble Bed (HCPB) Breeding Blanket (BB) design. The GETTHEM results are first benchmarked in a controlled case against the results of 3D Computational FluidDynamics computations, showing an acceptable accuracy despite the inherent simplifications in the GETTHEM model. G...

In digital watermarking, a watermark is embedded into a covertext in such a way that the resulting watermarked signal is robust to certain distortion caused by either standard data processing in a friendly environment or malicious attacks in an unfriendly environment. The watermarked signal can then be used for different purposes ranging from copyright protection, data authentication, fingerpri...

Wireless sensor networks consist of small nodes which are capable of sensing, computation, and communication. The initial goal of a sensing system is to detect the events of interest. In this project, we study decentralized detection in sensor networks. First, we will review the classical decentralized detection framework, in which a set of spatially distributed sensor nodes receives informatio...

Traditional Singular Value Decomposition usually applies an \in-core" computation, that is, all the matrix components must be loaded into memory before the computation can start, unless some distributed schemes are involved where communication among several machines may be necessary. While matrix size can easily exceed the memory capacity and becomes nearly comparable to the disk space, the nai...

Abstract— In this paper, we propose a direct/cooperative amplify-and-forward relay (D/AR) switching using a spectrum division/adaptive subcarrier allocation (SDASA) for increasing the uplink capacity of single carrier-frequency division multiple access (SC-FDMA). In the D/AR switching, switching between direct communication and cooperative AF relay is done so that the channel capacity is maximi...

Since the introduction of the 1985 High way Capacity Manual,’ there has been much discussion concerning its application. This is especially true in Southern California, where most government agencies and consultants have not yet agreed on a methodology for calculating signalized intersection capacity and level of service (LOS). Current methodologies include the 1985 Highway Capacity Manual (HCM...

In this work we study, analytically and employing Monte Carlo simulations, the influence of the competition between several activity-dependent synaptic processes, such as short-term synaptic facilitation and depression, on the maximum memory storage capacity in a neural network. In contrast with the case of synaptic depression, which drastically reduces the capacity of the network to store and ...