Finding Core-periphery Structure in Directed Networks: An Algorithm for Detecting Multiple-group Core-periphery Structure in Directed Netwoks

The core-periphery structure is a mesoscale topological structure that refers to the presence of a dense core and a sparse periphery. The core-periphery structure has been discovered in financial, biological, and technological networks. Various methods for detecting core-periphery structure have been proposed, exploring different discrete or...

The recoverability of network controllability

Network recoverability refers to the ability of a network to return to a desired<br/>performance level after suffering malicious attacks or random failures. A system is controllable if it can be driven from any arbitrary state to any desired state in finite time under the control of the driver nodes, which are attached to external inputs. We use...

Co-simulation of Demand-side Management and Load Flow Analysis tools in a LV network: Mitigating Over & Under Voltages

The traditional power grid map has drastically changed with the advent of renewable energy technologies. The intermittent nature of renewable energy sources hours. In order to deal with issues related to the fundamental quantities of a power grid system (frequency, voltage and current), smart grid systems have been introduced to ensure that...

Flexible and Programmable Evolved Packet Core: A New SDN-based Model

The mobile core network experienced many transformations during the past decade and at this moment virtualisation constitutes the next big phase in the operators strategies. Another technology which might step in the coming years is Software Defined Networking (SDN), a more mature technology in data centers, which strives to revolutionize the...

How High

Het bachelorproject `How High' heeft als doel het opbouwen en testen van een algoritme waarmee worpen van een telefoon gedetecteerd kunnen worden, en waarmee de bereikte hoogte bepaald kan worden. Dit algoritme dient daarna te worden toegepast in een game voor mobiele telefoons. Voor de detectie kan gebruik gemaakt worden van verschillende...

Vulnerability of Power Grids to Cascading Failures

Power sector vulnerability has been a key issue in society for over a decade. A component failure may trigger cascades of failures across the grid and lead to a large blackout. Complex Network approaches have shown a direction to study some of the problems faced by power grids and it is a continuing challenge thus far. Power grids have been...

Self-Optimized Resource Allocation in ICT Systems

In this thesis, I have investigated the self-optimization approach in order to solve a generic resource allocation challenge. The challenge is defined for a general ICT system serving two classes of jobs: low and high priority. The high priority jobs require a higher quality of service compared to the low priority jobs. In order to fulfill this...

New upper bounds on the separating redundancy of linear block codes

Most decoding algorithms of linear codes, in general, are designed to correct or detect errors. However, many channels cause erasures in addition to errors. In principle, decoding over such channels can be accomplished by deleting the erased symbols and decoding the resulting vector with respect to a punctured code. For any given linear code and...

Validating perceptual objective listening quality assessment methods on the tonal language Igbo

Measurement of the quality of Igbo speech.