Reliable and Energy-efficient Diabetic Retinopathy Screening using Memristor-based Neural Networks

Diabetic retinopathy (DR) is a leading cause of permanent vision loss worldwide. It refers to irreversible retinal damage caused due to elevated glucose levels and blood pressure. Regular screening for DR can facilitate its early detection and timely treatment. Neural network-based DR classifiers can be leveraged to achieve such screening in...

On the Reliability of RRAM-Based Neural Networks

Emerging device technologies such as Resistive RAMs (RRAMs) are under investigation by many researchers and semiconductor companies; not only to realize e.g., embedded non-volatile memories, but also to enable energy-efficient computing making use of new data processing paradigms such as computation-in-memory. However, such devices suffer from...

Offline Reconfigurability Based Substation Converter Sizing for Hybrid AC-DC Distribution Links

Hybrid ac-dc distribution systems with multiple parallel operating ac and dc links are being developed to maximize system capacity during (n-1) contingencies. This paper shows that offline reconfigurability between such ac and dc links post-fault clearance allows an additional design flexibility of reducing the required substation converter...

Assessment of the Suitability of NB-IoT Technology for ORM in Smart Grids

In this paper, we assess the suitability of NB-IoT (Narrowband Internet of Things) cellular technology for smart grid applications, concentrating on the reliable and timely delivery of Outage Restoration Management (ORM) messages at the event of a local or regional power outage. Using system-level simulations modelling of both the cellular NB...

Risk Based Maintenance in Electricity Network Organisations

Presently, maintenance management of assets in infrastructure utilities such as electricity, gas and water are widely undergoing changes towards new working environments. These are mainly driven against the background of stringent regulatory regimes, an ageing asset base, increased customer demands and constrained financial resources. Therefore,...

Preferred offshore power grids for wind energy

Offshore wind energy has become a very hot topic in northwest Europe, both from an industrial as from an academic point of view. Research on transmission grids for offshore wind energy focuses predominately on radial grids and HVDC. This study broadens this general scope by taken mesh grids and HVAC as the starting point. With the use of load...

Assessing Travel Time Reliability in Urban Networks from a Road User Perspective

Research on the relevance of reliable travel times to road users. Generally, average travel times are used, but reliability is important to road users as well. A method in which travel time reliability is included is developed and evaluated.

Energy-aware Wireless Multi-hop Networks

Wireless networks have provided us a variety of services which facilitate communication between people beyond the physical boundaries. Mobile telephony, mobile Internet and high-deffnition video calls are examples of services supported by modern networks nowadays. Beyond this, enhancements in processing capabilities of electronic devices coupled...

Keeping Connection: A comparative case study on reliability in vital infrastructures

The functioning of vital infrastructures, such as energy and telecommunications infrastructure, is key to societal and economic security and well-being in modern society. The reliability of these infrastructures is thus of paramount importance. Transmission system operators (TSOs) fulfill a central role in achieving this reliability, by...

Reliability in urban public transport network assessment and design

This research focuses on the influence of reliability of urban public transport services on network evaluation and network design. Public transport services suffer from all kind of disturbances, varying demand patterns, weather conditions, incidents, road works, et cetera. Current practice uses all kinds of operational measures to ensure the...

Modelling the Cost Performance of a Given Logistics Network Operating Under Regular and Irregular Conditions

This paper develops an analytical model for the assessment of the cost performance of a given logistics network operating under regular and irregular (disruptive) conditions. In addition, the paper aims to carry out a sensitivity analysis of this cost with respect to changes of the most influencing factors. In particular, this is expected to...

Reliable sensor networks: A case study in commuter trains

Public transport offers affordable transport to many people every day. Due to material wear down, trains can break down and stop functioning. To prevent this from happening, modern technology can used be for condition monitoring to recognize material wear down and thus allowing trains to be mended in time. The Dutch Railways approached Logica to...