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Articles 26371 - 26400 of 26884
Full-Text Articles in Entire DC Network
Foundations Of Offshore Wind Turbines: A Review, Xiaoni Wu, Yu Hu, Ye Li, Jian Yang, Lei Duan, Tongguang Wang, Thomas Adcock, Zhiyu Jiang, Zhen Gao, Zhiliang Lin, Alistair Borthwick, Shijun Liao
Foundations Of Offshore Wind Turbines: A Review, Xiaoni Wu, Yu Hu, Ye Li, Jian Yang, Lei Duan, Tongguang Wang, Thomas Adcock, Zhiyu Jiang, Zhen Gao, Zhiliang Lin, Alistair Borthwick, Shijun Liao
School of Engineering, Computing and Mathematics
No abstract provided.
Explicit Radial Basis Function Collocation Method For Computing Shallow Water Flows, Elmiloud Chaabelasri, Mohammed Jeyar, Alistair G.L. Borthwick
Explicit Radial Basis Function Collocation Method For Computing Shallow Water Flows, Elmiloud Chaabelasri, Mohammed Jeyar, Alistair G.L. Borthwick
School of Engineering, Computing and Mathematics
No abstract provided.
Network Security Intelligence Centres For Information Security Incident Management, Natalia Miloslavskaya
Network Security Intelligence Centres For Information Security Incident Management, Natalia Miloslavskaya
School of Engineering, Computing and Mathematics Theses
Intensive IT development has led to qualitative changes in our living, which are driving current information security (IS) trends and require sophisticated structures and adequate approached to manage IS for different businesses. The wide range of threats is constantly growing in modern intranets; they have become not only numerous and diverse but more disruptive. In such circumstances, organizations realize that IS incidents’ timely detection and prevention in the future (what is more important) are not only possible but imperative. Any delay and only reactive actions to IS incidents put their assets under risk. A properly designed IS incident management system …
Low Cost Graphene Oxide Aerogels For The Removal Of Pb+2 From Drinking Water, S Awan, J Bloor, D Jenkins, R Handy
Low Cost Graphene Oxide Aerogels For The Removal Of Pb+2 From Drinking Water, S Awan, J Bloor, D Jenkins, R Handy
School of Engineering, Computing and Mathematics
No abstract provided.
Decentralized Hamiltonian Control Of Multi-Der Isolated Microgrids With Meshed Topology, Mohamed Toub, Rush Robinett, Mohamed Maaroufi, Ghassane Aniba
Decentralized Hamiltonian Control Of Multi-Der Isolated Microgrids With Meshed Topology, Mohamed Toub, Rush Robinett, Mohamed Maaroufi, Ghassane Aniba
Michigan Tech Publications, Part 1
The new electricity grid of the future, smart grid, can be seen as the interconnection of multiple microgrids. These microgrids are usually composed of distributed energy resources (DERs) that connect to each other in different topologies. Therefore, the modeling and control of meshed microgrids are requisite. This paper presents a mathematical approach for the modeling and decentralized control of multi-DER isolated microgrids (ImGs) with a meshed topology. Based on the advanced control scheme: Hamiltonian surface shaping and power flow control (HSSPFC), decentralized controllers are designed independently using only local information. These controllers regulate the voltage at the point of common …
A Model For User-Centric Information Security Risk Assessment And Response, Manal Alohali
A Model For User-Centric Information Security Risk Assessment And Response, Manal Alohali
School of Engineering, Computing and Mathematics Theses
Managing and assessing information security risks in organizations is a well understood and accepted approach, with literature providing a vast array of proposed tools, methods and techniques. They are, however, tailored for organizations, with little literature supporting how these can be achieved more generally for end-users, i.e. users, who are solely responsible for their devices, data and for making their own security decisions. To protect against them, technical countermeasures alone has been found insufficient as it can be misused by users and become vulnerable to various threats. This research focuses on better understanding of human behavior which is vital for …
Relativistic Charge Dynamics In Electromagnetic Fields, Lauren Ansell
Relativistic Charge Dynamics In Electromagnetic Fields, Lauren Ansell
School of Engineering, Computing and Mathematics Theses
In this thesis we consider the motion of a charged particle in strong electromagnetic background elds, having in mind applications to state-of-the-art high-power lasers. To nd solutions of the Lorentz force equation of motion, we make use of Noether's theorem to identify conserved quantities of the charge dynamics. We will explain how, given enough symmetries, a dynamical system becomes integrable or, with a maximum number of conserved quantities, maximally superintegrable. Beginning with charged particles in vector background elds, we shall show that the relevant symmetry group is the Poincar e group. The dynamics for constant and univariate elds is classi …
Transparent User Authentication For Mobile Applications, Saud Nejr S Alotaibi
Transparent User Authentication For Mobile Applications, Saud Nejr S Alotaibi
School of Engineering, Computing and Mathematics Theses
The use of smartphones in our daily lives has grown steadily, due to the combination of mobility and round-the-clock multi-connectivity. In particular, smartphones are used to perform activities, such as sending emails, transferring money via mobile Internet banking, making calls, texting, surfing the Internet, viewing documents, storing medical, confidential and personal information, shopping online and playing games. Some active applications are considered sensitive and confidential and the risks are high in the event of the loss of any sensitive data or privacy breaches. In addition, after the point of entry, using techniques such as a PIN or password, the user …
Analysis And Design Of Castellated Beams, Sahar Sahib Elaiwi
Analysis And Design Of Castellated Beams, Sahar Sahib Elaiwi
School of Engineering, Computing and Mathematics Theses
The castellated beam is one of the steel members which uses less material, but has equal performance as the I-beam of the same size. Most of the castellated beams are fabricated from a standard universal I-beam or H-column, by cutting the web on a half hexagonal line down the centre of the beam, then these two halves are moved directly across by a half unit of spacing and re-joined by welding. This process leads to increasing the beam’s depth and thus the bending strength and stiffness about the major axis, without adding additional materials. This allows castellated beams to be …
An Object-Based Multimedia Forensic Analysis Tool, Shahlaa Talib Mashhadani
An Object-Based Multimedia Forensic Analysis Tool, Shahlaa Talib Mashhadani
School of Engineering, Computing and Mathematics Theses
With the enormous increase in the use and volume of photographs and videos, multimedia-based digital evidence now plays an increasingly fundamental role in criminal investigations. However, with the increase, it is becoming time-consuming and costly for investigators to analyse content manually. Within the research community, focus on multimedia content has tended to be on highly specialised scenarios such as tattoo identification, number plate recognition, and child exploitation. An investigator’s ability to search multimedia data based on keywords (an approach that already exists within forensic tools for character-based evidence) could provide a simple and effective approach for identifying relevant imagery. This …
Improving Group Integrity Of Tags In Rfid Systems, Reem Alkanhel
Improving Group Integrity Of Tags In Rfid Systems, Reem Alkanhel
School of Engineering, Computing and Mathematics Theses
Checking the integrity of groups containing radio frequency identification (RFID) tagged objects or recovering the tag identifiers of missing objects is important in many activities. Several autonomous checking methods have been proposed for increasing the capability of recovering missing tag identifiers without external systems. This has been achieved by treating a group of tag identifiers (IDs) as packet symbols encoded and decoded in a way similar to that in binary erasure channels (BECs). Redundant data are required to be written into the limited memory space of RFID tags in order to enable the decoding process. In this thesis, the group …
Atomic Spectrometry Update: Review Of Advances In The Analysis Of Metals, Chemicals And Materials, Simon Carter, Robert Clough, Andy Fisher, Bridget Gibson, Ben Russell, Julia Waack
Atomic Spectrometry Update: Review Of Advances In The Analysis Of Metals, Chemicals And Materials, Simon Carter, Robert Clough, Andy Fisher, Bridget Gibson, Ben Russell, Julia Waack
School of Geography, Earth and Environmental Sciences
This review covers advances in the analysis of advanced materials, metals, fuels and lubricants, nanostructures, ceramics, refractories, organic and inorganic chemicals, catalysts and nuclear materials by a range of techniques including X-ray, ICP, LIBS, mass spectrometry, synchrotron-based techniques, plus non-destructive and ablation surface techniques.
Graphene/Silicon Schottky Junction Solar Cells With High Efficiency, Ahmed Suhail
Graphene/Silicon Schottky Junction Solar Cells With High Efficiency, Ahmed Suhail
School of Engineering, Computing and Mathematics Theses
Silicon p-n junction solar cells have a power conversion efficiency (PCE) up to 12%. Graphene, which has unique properties is an excellent material for solar cells with the potential to achieve higher PCEs. Since 2009, researchers have started to integrate CVD-graphene with Si substrates to develop Schottky junction solar cells with potentially higher PCE. However, there are several challenges remaining in designing and fabricating these cells. In this project, a novel graphene/Si Schottky junction solar cell with a back-contact structure was fabricated to increase the active area and also enable a texturing process to be implemented on the front of …
Bioelectrical User Authentication, Timibloudi Stephen Enamamu
Bioelectrical User Authentication, Timibloudi Stephen Enamamu
School of Engineering, Computing and Mathematics Theses
There has been tremendous growth of mobile devices, which includes mobile phones, tablets etc. in recent years. The use of mobile phone is more prevalent due to their increasing functionality and capacity. Most of the mobile phones available now are smart phones and better processing capability hence their deployment for processing large volume of information. The information contained in these smart phones need to be protected against unauthorised persons from getting hold of personal data. To verify a legitimate user before accessing the phone information, the user authentication mechanism should be robust enough to meet present security challenge. The present …
Dynamic Instability Of Castellated Beams Subjected To Transverse Periodic Loading, S Elaiwi, B Kim, L-Y Li
Dynamic Instability Of Castellated Beams Subjected To Transverse Periodic Loading, S Elaiwi, B Kim, L-Y Li
School of Engineering, Computing and Mathematics
No abstract provided.
Securing Cloud Storage By Transparent Biometric Cryptography, Leith Abed
Securing Cloud Storage By Transparent Biometric Cryptography, Leith Abed
School of Engineering, Computing and Mathematics Theses
With the capability of storing huge volumes of data over the Internet, cloud storage has become a popular and desirable service for individuals and enterprises. The security issues, nevertheless, have been the intense debate within the cloud community. Significant attacks can be taken place, the most common being guessing the (poor) passwords. Given weaknesses with verification credentials, malicious attacks have happened across a variety of well-known storage services (i.e. Dropbox and Google Drive) – resulting in loss the privacy and confidentiality of files. Whilst today's use of third-party cryptographic applications can independently encrypt data, it arguably places a significant burden …
Fcmdt: A Novel Fuzzy Cognitive Maps Dynamic Trust Model For Cloud Federated Identity Management, Keltoum Bendiab, Stavros Shiaeles, S. Boucherkha, Bogdan Ghita
Fcmdt: A Novel Fuzzy Cognitive Maps Dynamic Trust Model For Cloud Federated Identity Management, Keltoum Bendiab, Stavros Shiaeles, S. Boucherkha, Bogdan Ghita
School of Engineering, Computing and Mathematics
No abstract provided.
Bbgdash: A Max-Min Bounded Bitrate Guidance For Sdn Enabled Adaptive Video Streaming, Ali Edan Al-Issa, Abdelhak Bentaleb, Thomas Zinner, Is Haka Mkwawa, Bogdan Ghita
Bbgdash: A Max-Min Bounded Bitrate Guidance For Sdn Enabled Adaptive Video Streaming, Ali Edan Al-Issa, Abdelhak Bentaleb, Thomas Zinner, Is Haka Mkwawa, Bogdan Ghita
School of Engineering, Computing and Mathematics
No abstract provided.
Performance Analysis Of Data Fragmentation Techniques On A Cloud Server, Nelson Santos, Salvatore Lentini, Enrico Grosso, Bogdan Ghita, Giovanni Masala
Performance Analysis Of Data Fragmentation Techniques On A Cloud Server, Nelson Santos, Salvatore Lentini, Enrico Grosso, Bogdan Ghita, Giovanni Masala
School of Engineering, Computing and Mathematics
The advancements in virtualisation and distributed computing have allowed the cloud paradigm to become very popular among users and resources. It allows companies to save costs on infrastructure and maintenance and to focus on the development of products. However, this fast-growing paradigm has brought along some concerns from users, such as the integrity and security of the data, particularly in environments where users rely entirely on providers to secure their data. This paper explores different techniques to fragment data on the cloud and prevent direct unauthorised access to the data. It explores their performance on a cloud instance, where the …
Numerical Modelling Of Responses Of Offshore Wave Energy Converters In Extreme Waves, Pierre-Henri Musiedlak
Numerical Modelling Of Responses Of Offshore Wave Energy Converters In Extreme Waves, Pierre-Henri Musiedlak
School of Engineering, Computing and Mathematics Theses
Wave Energy is a promising sector for sustainable low-carbon energy production. Despite the effort put in the last decade, concerning problems remained unsolved. Numerical modelling can play a key role in the assessment of extreme responses necessary to the understanding of Wave Energy Converter (WEC) capacity to survive extreme conditions. However, high-fidelity codes are too time-consuming for industries, while codes of lower fidelity are based on major physical assumptions inducing concerning uncertainties. Therefore, the present study - sponsored jointly by DNV GL and the University of Plymouth - develops an hybrid model coupling the low-fidelity model WaveDyn, with a Computational …
Novel Trust Consensus Protocol And Blockchain-Based Trust Evaluation System For M2m Application Services, Besfort Shala, Ulrich Trick, Armin Lehmann, Bogdan Ghita, Stavros Shiaeles
Novel Trust Consensus Protocol And Blockchain-Based Trust Evaluation System For M2m Application Services, Besfort Shala, Ulrich Trick, Armin Lehmann, Bogdan Ghita, Stavros Shiaeles
School of Engineering, Computing and Mathematics
No abstract provided.
Multi-Directional Focused Wave Group Interactions With A Plane Beach, Frances M. Judge, Alison C. Hunt-Raby, Jana Orszaghova, Paul H. Taylor, Alistair G.L. Borthwick
Multi-Directional Focused Wave Group Interactions With A Plane Beach, Frances M. Judge, Alison C. Hunt-Raby, Jana Orszaghova, Paul H. Taylor, Alistair G.L. Borthwick
School of Engineering, Computing and Mathematics
No abstract provided.
Entrepreneurship Book Of Vietnamese Cases, Thomas M. Cooney, Vũ Thế Dũng, Trần Hoàng Hải, Vũ Văn Thiệu, Lê Hà Như Thảo, Huỳnh Thị Kim Hà, Tạ Hùng Anh, Đinh Nguyễn Khánh Phương, Huỳnh Minh Nhựt
Entrepreneurship Book Of Vietnamese Cases, Thomas M. Cooney, Vũ Thế Dũng, Trần Hoàng Hải, Vũ Văn Thiệu, Lê Hà Như Thảo, Huỳnh Thị Kim Hà, Tạ Hùng Anh, Đinh Nguyễn Khánh Phương, Huỳnh Minh Nhựt
Books/Book Chapters
This publication ‘Entrepreneurship Book of Vietnamese Cases’ is part of the ‘Supporting Entrepreneurial Development in ICT in Vietnamese HEIs – ICTentr’ project, an initiative which aims to support the national goals of Vietnam to modernise higher education systems and improve skills in ICT through capacity development. The overall objective of this project is to provide ICT students with an entrepreneurial mindset, soft skills and a professional attitude when graduating from the university. The activities are targeted both to students and teachers involved in enhancing innovation. The project is coordinated by the University of Turku (UTU), Finland. The consortium is also …
A New Network Model For Cyber Threat Intelligence Sharing Using Blockchain Technology, Daire Homan, Ian Shiel, Christina Thorpe
A New Network Model For Cyber Threat Intelligence Sharing Using Blockchain Technology, Daire Homan, Ian Shiel, Christina Thorpe
Conference Papers
The aim of this research is to propose a new blockchain network model that facilitates the secure dissemination of Cyber Threat Intelligence (CTI) data. The primary motivations for this study are based around the recent changes to information security legislation in the European Union and the challenges that Computer Security and Incident Response Teams (CSIRT) face when trying to share actionable and highly sensitive data within systems where participants do not always share the same interests or motivations. We discuss the common problems within the domain of CTI sharing and we propose a new model, that leverages the security properties …
Lutein And Zeaxanthin: The Possible Contribution, Mechanisms Of Action And Implications Of Modern Dietary Intake For Cognitive Development In Children. [Version 1; Peer Review: 2 Approved], Ekaterina Loskutova, Kajal Shah, Daniel Ian Flitcroft, Annalisa Setti, John Butler, Yvonne Nolan, Nabin Paudel, James Loughman
Lutein And Zeaxanthin: The Possible Contribution, Mechanisms Of Action And Implications Of Modern Dietary Intake For Cognitive Development In Children. [Version 1; Peer Review: 2 Approved], Ekaterina Loskutova, Kajal Shah, Daniel Ian Flitcroft, Annalisa Setti, John Butler, Yvonne Nolan, Nabin Paudel, James Loughman
Articles
No abstract provided.
Identification Of Surrogate Biomarkers For The Prediction Of Patients At Risk Of Low Macular Pigment In Type 2 Diabetes, Grainne Scanlon, Daniel Mccartney, John Butler, Ekaterina Loskutova, James Loughman
Identification Of Surrogate Biomarkers For The Prediction Of Patients At Risk Of Low Macular Pigment In Type 2 Diabetes, Grainne Scanlon, Daniel Mccartney, John Butler, Ekaterina Loskutova, James Loughman
Articles
Purpose: This cross-sectional study compared macular pigment (MP) levels among persons with Type 2 diabetes relative to healthy controls. Additionally, a range of behavioral, anthropometric, clinical and serum measures were explored as possible predictors of low MP optical density (MPOD) in diabetes.
Addressing Vision Impairment In Mozambique And The Africa Region, Stephen Thompson, Kovin Naidoo, Joel Bambamba, Vanessa Moodley, Diane Van Staden, Amanda Forde, Kajal Shah, Luigi Bilotto, James Loughman
Addressing Vision Impairment In Mozambique And The Africa Region, Stephen Thompson, Kovin Naidoo, Joel Bambamba, Vanessa Moodley, Diane Van Staden, Amanda Forde, Kajal Shah, Luigi Bilotto, James Loughman
Articles
The Mozambique Eyecare Project was an international partnership to implement and research eye health education in Mozambique and the Africa region. An optometry degree was developed at Universidade Lúrio, Mozambique. In addition, existing eye health workers were upskilled with training. Researchers from various disciplines evaluated the project and its potential for impact on eye health in the region. The body of evidence generated from the research provides useful lessons for development programmes in general, as well as specific lessons for delivering eye health education and service delivery models for low income settings.
Third-Order Optical Nonlinearity Properties Of Cdcl2-Modifed Ge–Sb–S Chalcogenide Glasses, Xiaosong Lu, Jianhui Li, Lu Yang, Runan Zhang, Yindong Zhang, Jing Ren, Aurelian Catalin Galca, Mihail Secu, Gerald Farrell, Pengfei Wang
Third-Order Optical Nonlinearity Properties Of Cdcl2-Modifed Ge–Sb–S Chalcogenide Glasses, Xiaosong Lu, Jianhui Li, Lu Yang, Runan Zhang, Yindong Zhang, Jing Ren, Aurelian Catalin Galca, Mihail Secu, Gerald Farrell, Pengfei Wang
Articles
We developed a new type of chalcohalide glasses with physicochemical and nonlinear optical properties that are tunable by composition. It is found that more than 60 mol.% CdCl2 heavy metal halide can be dissolved into the ternary Ge–Sb–S system and forming stable glasses. The visible-light transparency range is extended to shorter wavelengths with the addition of CdCl2, which is beneficial for the optical quality control and infra-red (IR) system alignment. The third-order optical nonlinearity (TONL) is studied using the femtosecond Z-scan method. The results show that both the nonlinear refractive index and two photon absorption co-efficient decrease with CdCl2. Benefiting …
All Fibre Q-Switched Thulium-Doped Fibre Laser Incorporating Thulium–Holmium Co-Doped Fibre As A Saturable Absorber, Shi Li, Elfed Lewis, Gerald Farrell, Ahmad Haziq Aiman Rosol, A.A. Latiff, Sulaiman Wadi Harun, Bingang Guo, Pengfei Wang
All Fibre Q-Switched Thulium-Doped Fibre Laser Incorporating Thulium–Holmium Co-Doped Fibre As A Saturable Absorber, Shi Li, Elfed Lewis, Gerald Farrell, Ahmad Haziq Aiman Rosol, A.A. Latiff, Sulaiman Wadi Harun, Bingang Guo, Pengfei Wang
Articles
A novel all fibre Q-switched Thulium-doped fibre laser (TDFL) is reported which includes a short length of a Thulium–Holmiumco-doped fibre (THDF) as a saturable absorber. A high repetition rate (27.26 kHz) coupled with a low pulse width (19.06μs) is obtained for single wavelength Q-switched pulse operation at an output wavelength of 1911.5 nm using a pump power of 200 mW. Increasing the pump power from 200 mW to 700 mW results in the repetition rate increasing from 27.26 kHz to 99.67 kHz and the pulse width decreasing from 19.06μs to 920 ns. The centre wavelength of the single Q-switched pulse …
Distribution Of Tm 3+ And Ni 2+ In Chalcogenide Glass Ceramics Containing Ga2s3 Nanocrystals: Influence On Photoluminescence Properties, Xiaosong Lu, Zhiqiang Lai, Jing Ren, Lukas Strizik, Tomas Wagner, Yanqiu Du, Gerald Farrell, Pengfei Wang
Distribution Of Tm 3+ And Ni 2+ In Chalcogenide Glass Ceramics Containing Ga2s3 Nanocrystals: Influence On Photoluminescence Properties, Xiaosong Lu, Zhiqiang Lai, Jing Ren, Lukas Strizik, Tomas Wagner, Yanqiu Du, Gerald Farrell, Pengfei Wang
Articles
The distribution of Tm3+ and Ni2+ ions is unambiguously exhibited in 80GeS2-20Ga2S3 chalcogenide glass ceramics (GCs) containing Ga2S3 nanocrystals (NCs) by using advanced analytical transmission electron microscopy. Distinctively different distribution patterns of Tm3+ and Ni2+ ions are observed in the GCs obtained by controlled crystallization. The distribution of the dopants imposes strong influence on their optical properties which are revealed by absorption and photoluminescence (PL) spectra. Detailed discussions are given of the mechanisms of the crystallization-induced PL enhancement and quenching of the Tm3+ mid-infrared and Ni2+ near-infrared emissions, respectively.