An Improved DeNSE Methodology for Optimal Sectorization of Water Distribution Networks

Sectorization of a water distribution network (WDN) into district meter areas (DMAs) is considered a key strategy for an efficient management of WDNs. Typically, it involves a two-stage procedure: a clustering stage, in which the division of the WDN into clusters is performed, and a dividing stage, which involves the placement of valves and...

The Application of RDMA over Converged Ethernet Data Transport for Radio-Astronomy Systems

The need to receive and process higher data rates in computer clusters is an ever-increasing trend. This also applies to radio-astronomic systems, which have become more distributed over the past decades, increasing data traffic between antennas and processing facilities. At the antenna, Field Programmable Gate Arrays (FPGAs) digitise the radio...

The influence of the surface roughness, creep and relaxation on the performance of elastomeric liners for sustainable glass bottle closures

Glass bottles having a metal closure are preferred for oxygen sensitive beverages e.g. beer. Using thinner closure which comprise polyvinyl chloride-free component is more sustainable. However, protecting the sealing performance as a result of metal closure thickness reduction is challenging. Here we show the relation between the leakage in...

EMC oxidation under high temperature aging

Epoxy molding compound (EMC) is widely used for encapsulating automotive electronics. Among all of the components of an electronic package, EMC is most exposed to the atmosphere, and thus undergoes aging. During high-temperature operation, EMC is oxidized, which alters its mechanical properties, and thus can affect the reliability of electronic...

Hardware­-Based Methods for Memory Acquisition: Analysis and Improvements

Some server hosters facilitate cyber crime either intentionally (so called “bulletproof hosters”) or unintentionally (“bad hosters”). When dealing with uncooperative hosters during forensic investigations, it may sometimes be necessary to collect data or information on the servers without help from the owner of the server....

Influence of moisture and CO₂ on the material behavior of thermoplastic elastomers for beer bottle closures

Metal closures with a polymer-based sealing for beer bottles have been known since the late nineteen-sixties. However, to what extent which parameter of the polymer sealing gasket plays a role in closure performance to keep the beer quality to a highest level possible is not fully understood. For this purpose three thermoplastic elastomer ...

Uniformity and Heuristics-Based DeNSE Method for Sectorization of Water Distribution Networks

Sectorization of a water distribution network (WDN) into district metered areas (DMAs) is a proven solution for proactive leakage control. Traditionally, WDN sectorization is conducted by local experts using a trial-and-error approach, often resulting in the identification of arbitrary solutions. Some recently published methods try to improve...

The Effect of Mechanical Strain on Non-enzymatic Cross-linking of Collagen type II Fibrils in Articular Cartilage

Investigations into mechanotransduction in connective tissue extracellular matrix (ECM) have demonstrated that collagen networks show cell-independent mechanosensitive behavior. It has been suggested that mechanical strain could lead to conformational changes in the molecular structure of collagen, thereby influencing the susceptibility to other...

OpenACC GPU implementation of double-stage delay-multiply-and-sum algorithm: Toward enhanced real-time linear-array photoacoustic tomography

Double-stage delay-multiply-and-sum (DS-DMAS) is one of the algorithms proposed for photoacoustic image reconstruction where a linear-array transducer is used to detect signals. This algorithm provides a higher contrast image in comparison with the conventional delay-multiply-and-sum (DMAS) and delay-and-sum (DAS), but it imposes a high...

GPU-accelerated Double-Stage Delay-Multiply-and-Sum Algorithm for Fast Photoacoustic Tomography Using LED Excitation and Linear Arrays

Double-stage delay-multiply-and-sum (DS-DMAS) is an algorithm proposed for photoacoustic image reconstruction. The DS-DMAS algorithm offers a higher contrast than conventional delay-and-sum and delay-multiply and-sum but at the expense of higher computational complexity. Here, we utilized a compute unified device architecture (CUDA) graphics...

Model-based leak localization in small water supply networks

Small leaks in water supply networks often remain undiscovered, resulting in large amounts of lost water. Moreover, small leaks can grow larger over time and may result in pipe bursts, having negative consequences for the surroundings. An automatic leak localization method is required to decrease the search area and hence localize small leaks...

Specification and Implementation of a DMA Controller in an Embedded System

The fast growing of In-Car entertainment application leads to an increasing challenge for both data computation and data communication, which are managed by the microprocessor. The thesis project is the third stage of a continuous Direct Memory Access(DMA) Controller project in NXP Semiconductors for the purpose of specifying and implementing a...