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  3. Research Centre for Systems & Control
    1. Available PhD projects
About City

Research Centre for Systems & Control

Created in 2001, this centre is an evolution of earlier activities in Systems Science at City (in the 1960s) and the well-established research base in the Systems & Control field, dating from the late 1970s.

The Control activities of the centre were expanded in the Systems area with new activities in Operational Research, Reliability, Risk, Systems Engineering and more recently by activities in Communication Networks, Cyber Security, Machine Vision, and Intelligent Systems. The centre's activities address the challenge of complexity in engineering and general processes and aim to extend the systems and control approaches to challenging problems in the Design, Operations and Management of Industrial Processes, as well as new fields of applications such as Energy, Transport, Environment and Security. The research programme is supported by research in Applied Mathematics in areas of Mathematical Systems Theory, Operational Research and Computations.

About the centre

Vision

The Design for Management of Complexity is viewed as the great challenge to technological progress. The complexity of emerging applications from diverse fields necessitates holistic and innovative solutions founded on the multi-disciplinary systems approach. This has to be based by development of the fundamentals in Systems, Control, Measurement, Information, Modelling, Mathematical Methods and Computations, supported by enabling technologies and motivated by the challenges of emerging applications.

Flow diagram of control management

Objectives

Management of Complexity in Design and Decision Making of Engineering and emerging application areas by:

  1. Undertaking Research on the fundamentals of Systems, Control, Measurement, Information, Modelling & Mathematical Methods
  2. Developing methodologies that will enable the management of complexity in Engineering and emerging areas of applications.
  3. Developing applied research in Engineering, Transport, Energy and Management problems.

Research groups

The research of the centre is organised in four interacting groups:

  • Control of Complex Systems
  • Engineering Systems
  • Networks & Cyber Security
  • Mathematical Methods & Computations.

Most members of the centre participate in more than one group.

Expertise

Centre members' areas of expertise include:

  • Control Theory and Design
  • Systems Engineering
  • Operational Research & Optimisation
  • Wireless and Mobile Networks
  • Network Security & Cyber Crime
  • Systems Theory and Modelling
  • Machine Vision
  • Artificial Intelligence
  • Applied Mathematics and Computations
  • Transportation Systems.

People

Full members

Click on the name of a member below to find out about their background, research interests and more.

Professor N. KarcaniasProfessor N. Karcanias, Professor of Control Theory and Design, Centre Director

Available PhD projects include: Structure evolving systems in the context of passive electrical networks: The problem of growth and death; Measuring relative strength of systems properties and design strategies for global instrumentation; Matrix pencils and robustness in geometric system theory; Simplification of complexity, and model structure evolution; System of systems: Towards a formal characterisation. Read more about Professor Karcanias' available PhD projects .

Profeesor G. HalikiasProfessor G. Halikias, Professor of Control Engineering

Available PhD projects include: Cooperative network control; Analysis and synthesis of piecewise-linear/switched dynamic systems; Optimisation methods for robust control; Strong stability and stabilisation; Modelling and control of supply chains; Congestion-control of communication networks. Read more about Professor Halikias' available PhD projects.

Professor D. W. StupplesProfessor D. W. Stupples, Professor of Systems and Cryptography

Available PhD projects include: Ubiquitous radar system - Range performance; Ubiquitous radar - Advanced target recognition; Ubiquitous radar - Detection of stealth aircraft at long range. Read more about Professor Stupples' available PhD projects.

Professor Tom ChenProfessor T. Chen, Professor of Cyber Security

Available PhD projects include: Cyber security wearables and Internet of Things; Adversarial risk modelling; Game theory models for cyber conflicts; Cyber terrorism. Read more about Professor Chen's available PhD projects.

Dr V. RakocevicDr V. Rakocevic, Reader in Networks and Communications

Available PhD projects include: Distributed protocols for spatiotemporal understanding of nodes in vehicular ad hoc networks; Low latency network control for machine-to-machine communication networks. Read more about Dr Rakocevic's available PhD projects.

Dr E. AlonsoDr E. Alonso, Reader in Computing

Available PhD projects include: Smart control for energy systems; Mathematical modelling of complex systems; Computational models of neuro-behavioural systems. Read more about Dr Alonso's available PhD projects .

Dr E. MilonidisDr E. Milonidis, Senior Lecturer in Control

Available PhD projects include: Sampling theory, structural properties and control design of discretised system models; Simultaneous finite settling time stabilisation: The multivariable case. Read more about Dr Milonidis' available PhD projects.

Dr M. Tomas-RodriguezDr M. Tomas-Rodriguez, Senior Lecturer, Control and Aeronautics

Available PhD projects include: Offshore floating wind energy turbines nonlinear dynamical modeling; Motorcycle alternative suspension design for stability purposes. Read more about Dr Tomas-Rodriguez's available PhD projects.

Dr L. EkonomouDr L. Ekonomou, Lecturer, Power Systems

Available PhD projects include: Intelligent solutions for electricity transmission and distribution networks. Read more about Dr Ekonomou's available PhD projects.

Dr I. KapariasDr I. Kaparias, Lecturer in Transportation Systems

Available PhD projects include: Multi-objective optimisation of urban mobility management policy- and decision-making using key performance indicators; User-oriented travel time reliability modelling for public transport networks; Modelling and prevention of cyclist accidents through the Cyclist 360° Alert system. Read more about Dr Kaparias' available PhD projects.

Dr Dimitra Apostolopoulou Dr D. Apostolopoulou , Lecturer.

Research fellows

  • Dr J. Leventides, Advanced Marie Curie Fellow, A-DAP
  • Dr K. Chrysagis, Advanced Marie Curie Fellow, GLOW
  • Dr S. Moustakidis, Research Fellow, EU project
  • Mr P. Karlsson, Research Fellow, EU project

Honorary visiting appointments

  • Professor M.J. Newby, Emeritus Professor, Reliability
  • Professor A.G. Hessami, Visiting Professor, Systems & Security, Vega Systems
  • Professor D. Katritsis, Visiting Professor, Medic, Cardiology, Euroclinic (GR)/Harvard
  • Dr I. Lucic, Senior Visiting Fellow
  • Dr D. Vafiadis, Senior Visiting Fellow
  • Dr E. Mondragon, Senior Visiting Fellow
  • Dr G. Galanis, Visiting Fellow

Associate members

Research students

Supervised by Dr Alonso

Mr R. Basaru
Mr N. Kokkola
Mr. A. Luzardo
Mr K Pozdniakov

Supervised by Professor Chen

Mr T.S. Alalyani
Mr J. Qadri
Mr P. Gong
Mr Q. Xu

Supervised by Dr Ekonomou

Mr S. U. Agamah
Mr M.M. Rahman
Ms V. Vita
Mr M. Trainba

Supervised by Professor Halikias

Ms S. Azimidana
Mr M.C. Leung
Ms I. Tomic
Ms S. Malekpoor
Mr A.A. Sayyad
Mr C. Apostolopoulos

Supervised by Dr Kaparias

Mr A. Dehghan
Mr A. Miah
Mr M.H. Mamouei

Supervised by Professor Karcanias

N. Barmparitsas
Ms A. Farshad Mehr
Ms M. Livada
Mr G. Petroulakis
Mr I. Meintanis
Mr S. Hao

Supervised by Dr Rakocevic

Mr M. Cvjetkovic
Mr P. Arnold
Ms N. Ayub
Mr J. Belschner
Mr V. Selimis
Mr C. Koehnen
Mr M. Milojevic
Ms C.H.C. Tung

Supervised by Professor Stupples

Mr D. Dudorov
Mr F. Rezazadeh Helmi
Mr R.C. Short
Ms B. Eilbigi Dehkordi
Ms N.T.G. Alshbani

Supervised by Dr Tomas-Rodriguez

Ms S. Estelles Martinez
Mr C. Moreno Ramirez
Mr S. Castillo Rivera

Groups & research areas

Control of Complex Systems

Control Theory & Design

  • Structure Evolution and Control
  • System of Systems
  • Co-operative Control
  • Robust Control Design
  • Algebraic Control Theory and Design
  • Nonlinear Systems
  • Large Scale Systems

A quadrocopter droneControl Theory and Design is a well-established area of research activity of the centre and is centred around the development structural methodologies based on algebraic, geometric and algebro-geometric methods on one hand and robust H-∞ methodologies. The central idea running through is the role of "system structure" in issues such as the analysis and design of control systems and the understanding of formation, evolution of system structure and resulting properties within the framework of the integrated systems design. The structural methodologies are complemented by the development of robust H-∞ optimisation methods for design and system model simplification. The term "system structure" is linked to system invariants and the basic topology of interconnections expressed in terms of graphs and structured models. The adopted philosophy is that "structure" defines the central features which determine the nature of resulting system properties and the system potential to achieve a number of objectives, and control design is then performed using optimization methods on structured control schemes. Current research is focused on the study of complex systems by examining design issues in "Integrated System Design" and "Systems of Systems" system paradigms.

Integrated Systems Design provides the motivation for the development of methodologies addressing problems in Structure Evolving Systems (SES). Research in the area of System of Systems (SoS) focuses on their classification and the characterization of the notion of "systems play" that is central to their characterization. Important area of complexity is linked to the large dimensionality of systems and applications considered are in the areas of power systems, process systems and transport. Issues considered relate to Large Scale System Decomposition, Structured Model Reduction, and Design of Decentralisation Structures.

Multi-Agent Systems & Intelligent Methods

Research in this area focuses in the areas of Multi-Agent Systems and Intelligent Methods. Current Research activities involve: Adaptive Dynamic Programming for Smart Energy Systems, Data Mining techniques for Transport and Market Forecasting, Machine Learning techniques for cyber security and 3D vision, Computational modeling in prediction and reward learning in people with ASD, Formalization of emergence in Systems of Systems and Multi-Agent Co-ordination and Communication

Network Theory

  • Redesign of Passive Networks
  • Supply chains control

The problem of redesigning systems by changing elements, topology, organization is a major challenge where systems and control theory have a major role to play. Network redesign is a process involving an evolution to system structure under different types of transformations. A special case considered here is the redesign of passive electric networks which aims to change the natural dynamics of the network (natural frequencies) by modification of the network. A control theoretic framework for addressing issues of systems redesign is examined here.

The work on Supply Chains aims to analyze dynamic phenomena arising in supply chain models, driven by stochastic inputs and examine the characterization of the "bullwhip effect" (demand amplification).

Application Domains

  • Unstable Vehicle Dynamics
  • Industrial Automation
  • Power Systems

The fundamental work in the areas of Control and Engineering systems leads to the development of methodologies, concepts and tools which are used in the study of problems in specific applications areas which include Transport, Energy, Supply Chains and Industrial Automation. Research in such areas is linked to EU-funded projects. Specifically:

  • The Control of unstable vehicle dynamics deals complex nonlinear dynamical systems such as rotorcrafts and high performance motorbikes. For helicopter, unstable behaviour involves the design of a high fidelity computer models enabling the study and understanding of existing pathological dynamics. In motorcycle dynamics we examine the development of mechanical steering compensators to improve the dynamic behaviour of high-performance motorcycles.
  • Process Control has been a long-standing activity supported by a number of EU projects, where the development of control structures for large scale process systems has been an area of interest. Current work deals with the development of modelling, measurement and control for Powder Coating Manufacturing process within an EU project.
  • Research in Power Systems deal with problems in Transmission and distribution networks, distributed generation, lightning, and embedded power systems using AI techniques and Artificial Neural Nets. Of special interest is the study of partitioning of systems (islanding methodologies) which is linked to the study of protection of power systems. Robust H-∞ methodologies are central to the development of model reduction techniques.
A powder coating manufacturing line at SBS in Italy
SBS (Italy) powder coating manufacturing lines

Engineering Systems

Systems Engineering

  • Modelling of Management Processes - "Soft Systems"
  • Reliability, Maintenance, and Risk
  • Asset Management
  • Sustainability of Engineering Systems

The complexity of today's problems - from financial markets to national security - demand more quantitative thinking and better assessments of risk, business, transportation and environmental issues. This requires focus on using systems methodologies, mathematics, statistics, and the tools of engineering to evaluate risks and optimize decision making in complex systems. Manufacturers of capital goods are rapidly transforming themselves into the providers of services where the function of the capital item is sold rather than the item itself. This change demands new ways based on systems, financial engineering and risk analysis to price, manage, and service the resulting contracts.

Major capital projects are also evaluated on the basis of life cycle cost and revenue streams in an uncertain environment. Managing and engineering the uncertainties and risk inherent in such projects and designing appropriate financial instruments and tools to optimize their performance throughout the life cycle is critical. The research in this area is based on Systems Methodologies, Operational Research and it is distinguished by the effort to extend traditional control concepts and tools to the area of management systems. Systems complexity and emergent properties are central issues in this research.

System Design

  • Systems Modelling
  • Systems Integration
  • Re-engineering of Engineering Systems

Nowadays we witness the need for engineering type solutions to a variety of non-engineering applications. Responding to such challenges requires development of areas of Systems Theory and Systems Engineering, to enable it to cope with the interdisciplinary requirements, such as modeling problems originating from different areas, carrying out analysis and developing relevant solutions. Major challenges emerge in the areas of integrating the physical-operational-business-information-data dimensions of complex systems (referred to as systems integration) as well as addressing the problems of re-engineering large infrastructure systems (referred to as re-engineering) to comply with new requirements. A crucial theme supporting both areas is systems modelling, where development of links between conceptual and formal models of variable complexity is a major challenge. This research is frequently linked with funded projects (EU).

Systems and Emergent Properties

  • Safety, Assurance & Security

Safety is a human-focused and complex socio-technical issue. The classical view of safety is largely biased towards the causality of hazardous states and failure of products, processes and systems. Our research is focused on a new paradigm for holistic systems assurance, of which, safety performance and security/vulnerability are key aspects. Whilst principally focused on safety assurance, the paradigm is broadly applicable to any facet of a system's performance and goes beyond the current horizons of systems safety landscape and proposes a more inclusive approach and extension of current systems safety domain.

Factory in the oil and gas industry

Factory in the oil and gas industry

Complex Systems Applications

  • Transportation Systems
  • Emerging Complex Systems

Research in transport systems includes: Traffic engineering, modelling and simulation, Intelligent Transport Systems (ITS), network reliability, travel demand, Operations Research, travel behaviour, public transport operations, and transport and public realm.

The modern world depends on the efficient running of complex engineered systems to function effectively. Such systems have traditionally covered transport, energy and the other major utilities, but now increasingly the list includes the internet and its associated world-wide web, online banking and shopping, international commerce, and intelligence and security. Complexity is further added through the integration of these systems into themes that support the wealth of nations, governance and socio-economic well-being. Efficient complex systems do not come about by chance; they are designed to evolve to match moving economies either through adaptive processes or by removing ineffective elements and replacing them with new elements. Managing complex systems requires a good knowledge of systems science, computer science, systems analysis systems modelling, control theory and systems engineering. This knowledge must be underpinned by a good understanding of the mathematics involved.

These are exciting times to work in the area of complex systems as the foundation of world economies is more and more underpinned by the integrated nature of engineered systems particularly as social systems merge to form a seamless world. The work on the fundamentals feeds to a number of challenging problems which include Re-engineering of large infrastructure transport systems, Systems Assurance in complex engineering designs, asset management of large projects.

Networks and Cyber Security

Wireless Networks

Representation of the acceleration of light wavesWireless networks and related technology research focuses on Wireless Networks and deals with the development of networking technologies and protocols, which enable the high-speed data exchange users or modern wireless networks development. Research here is focused on the quality of service provision and involves control and optimisation of wireless communication networks in a wide range of wireless network systems, including local and metropolitan wireless networks. The research involves: Optimal scheduling, dynamic clustering: Cooperation and network self-organisation; Heterogeneous "4G" cellular networks, energy network optimisation; Wireless sensor Networks routing. Application of some of the optimisation solutions are found in energy networks.

Radar Systems and Signal Processing

Sophisticated drone technology is now available to everyone as it is becomes affordable and easy to deploy. Whilst this promotes a wide range of leisure and hobbyist activity it also heralds new weapons for terrorists and criminal organisations with possible threats to vital infrastructure. Security services have turned their attention to improving surveillance technology to track drone activity near or above sensitive areas but a problem exists with detecting slow moving very small objects hidden amongst noise and clutter with traditional radar technology. The centre is working with a Cambridge-based UK radar company, Aveillant Ltd, to enhance the signals processing functionality of a new concept radar that has the potential to identify and track all drones. This radar has unique characteristics in that it can survey in all directions at the same time for long periods and hence it possesses the potential to detect most drone activity even with high-levels ground clutter present.

Rooftop holographic radar by Aveillant
Aveillant rooftop holographic radar

Diagram showing 360-degree radar coverage
360° continuous radar coverage

Cryptography, Cyber protection

  • Internet Complexity and Modelling
  • Android Malware

Research is being undertaken into cryptographic methods used in networked communications. The research, using systems methods, is focused on the integrity of current block and stream ciphers employed to protect both commercial and government communications. A particular focus is to assign a complexity rating to a cipher with a view to assessing the resource required to break the cipher. This complexity approach used links with other systems work undertaken by the university. The research employs recently acquired high-performance computing (HPC) facilities.

Research in network security has particular interests in malware, traffic classification, intrusion detection, and wearable security. Recent research aims to model and analyse strategies in cyber conflicts including warfare and terrorism. Specific research areas include: Cryptography and Cyber Security; Cyber Terrorism and Cyber Warfare; Modelling techniques & behaviour of complex internet systems; Intrusion detection & attack modelling; Intrusion detection & attack modelling.

Mathematical Methods & Optimisation

Mathematical Systems Theory

  • Implicit Systems Theory
  • Structure Evolution and System Invariants

Collage of graphics related to communicationSystems Theory underpins many aspects of the development of Control Theory and Design and involves the development of Mathematical System Theory for the standard Linear Systems paradigm and the development of the fundamentals for a Control and Systems Framework for the emerging paradigms of Complex Systems. A major activity is the development of the Matrix Pencils algebraic framework for Geometric Control Theory that provides a unifying approach for the study of dynamics, geometric, algebraic and computational aspects of Linear Systems. Open research issues of mathematical nature related to graph evolution, as well as issues of Kronecker structure evolution in variable complexity models are topics related to the theory of Structure Evolving Systems (SES).

Approximate Algebraic Computations

  • Approximate Intersections of varieties & Distance Problems

The area of Algebraic Computations deals with the development of suitable matrix representations of algebraic invariants such as the Greatest Common Divisor (GCD), Least Common Multiple (LCM) of sets of polynomials and their polynomial matrix theory versions and then develop numerically robust techniques for their computation. Of special interest is the introduction of an appropriate framework and tools for the definition of approximate solutions to non-generic computation problems. This research is now extended to the study of approximate matrix GCD and LCM for polynomial and rational matrices. A new area of research has been the development of approximate solutions to Determinantal Assignment Problems which are described as distance problems between varieties in a projective space.

Linear Algebra

  • Matrix Pencil & Polynomial Matrix Theory
  • Exterior Equations

Research in areas of Linear Algebra centered around the development of the classical theory of Matrix Pencils and in particular the theory of invariants under special types of transformation groups. The development of matrix pencil theory is now focused on the study of Bilinear-Strict Equivalence and its importance in numerical computations. We study Matrix Equations over PIDs investigate conditions for their solvability and the development of matrix representations that enable the development of computations. The solvability of Exterior Equations is integral part of the study of Determinantal Assignment Problems (DAP). Linear Algebra based conditions are derived based on properties of the Grassmann Matrices.

Optimisation Methods

  • H-∞ optimisation and Robust optimisation
  • Relaxation Methods for non-convex optimisation

Research on H-∞ optimisation relates to Robust Stabilisation and H-infinity Optimal Control. The work focuses on: (i) combining the H-infinity norm for robust-stability, with other norms; (ii) Development of efficient methods for solving H-infinity and Hankel-norm approximation problems, multiple-objective optimal control problems and algorithms for singular and ill-conditioned systems; (iii) non-convex optimisation problems we seek the development of general methods for breaching the duality gap in NP-hard problems by examining the properties of the dual problem. This approach leads to less conservative designs and efficient computations.

Research projects & outputs

Recent grants (2008-present)

Control of Complex Systems

Project: IAPP GLOW, FP7-Research for SME-2013-1, "New weather-stable low gloss powder coatings based on bifunctional acrylic solid resins and nanoadditives",(2013-2017, City: €575,000); N Karcanias (Principal Investigator (PI)), G Halikias (Co-Investigator (CI)), E Milonidis (CI)

The project aims to develop novel, advanced polymer-based raw and composite materials as well as processing and production technologies, towards new families of powder coatings, i.e. one-shot matt powder coatings, responding at the same time to the industrial requirements for quality improvement at lower cost, production of environmentally friendly materials and shorter development cycles. The project will pursue the generation of multifunctional formulations, based on new bi-functional polymeric binders and new nanoadditives aiming to expand significantly, both in terms of type and final application. The industrial system that will manufacture the new paints requires upgrading of the existing process systems (two industrial partners). Our role is to undertake the challenges of industrial automation by providing expertise in process control, industrial systems, integration in upscalling of processes to the industrial production level. In addition to the technology tasks we deal with the training of our industrial partners by: identifying the specific research and training needs for the scaling up of Laboratory Processes an developing a "Technology Watch" System for the upscaling of the Laboratory results.

Project: CompETe, FP7-Research for SME-2013-1: "Composites Evaluation in aircraft industry through Triplex IR imaging system", (2013-2015, City: €374,400); N Karcanias (PI), G Halikias (CI), Project Coordination

The project aims to develop an advanced non-invasive imaging tool for qualitative and quantitative inspection of composites used primarily but not only in aircraft applications. This novel system will be using automated scanning via the use of a polyarticulated robotic arm equipped with sophisticated and innovative sensors operating in three infrared wavelengths (near, medium and long wave). Novel sensings system are used to acquire images during the non-destructive inspection of composites in the three infrared wavelengths. The automated tool will allow fast and prompt inspection of different composites components in the aerospace industry using Near Infrared Vision, Mid Wave IR Thermography, and Long Wave IR Thermography. The system will incorporate a novel image processing module combining and enhancing the individual inspection capabilities of the three imaging sensors and automatically recognising defects that may be undetectable otherwise. City's role is in the area of signal processing, pattern recognition and overall systems integration of the partial diagnostics tools. We are also acting as Project coordinators.

Engineering Systems

Project: EU: FRAMEWORK 6, Collective Research Project TESS: "Speciality Chemicals Manufacturing SMEs: Toolbox to support Environmental and Sustainable Systems", (2006-2009, City: €460,000). N. Karcanias, G. Halikias

The project aimed to enable European SME manufacturers of Specialty and Fine Chemicals to identify gaps in their current ability to deal with the transition into REACH-compliancy and associated migration to Sustainable Manufacturing. This will be achieved by carrying out background research, to empower them with the protocols, tools and manufacturing methodologies, currently beyond their economic and knowledge horizons, but essential for making this journey. City's involvement was in the area of developing methodology and a Toolbox for the systems, and economic appraisal of alternative chemical supply chains and thus enable SMEs to move cost-effectively to the more sustainable supply chains essential for the future.

Project: CONDUITS-DST: Further development of the CONDUITS Key Performance Indicators (Kapsch TrafficCom) (2012-2015) I. Kaparias

Cities today share common transport problems and objectives with respect to road traffic management, and put great focus on Intelligent Transport Systems (ITS). The project involves the implementation of the FP7 CONDUITS project, the CONDUITS-DST spinoff project, sponsored by Kapsch TrafficCom, extends the CONDUITS framework from a tool for evaluating existing systems to a tool for evaluating future systems by integrating the CONDUITS KPIs with traffic micro-simulation. The outcome is a predictive evaluation tool for road traffic management and ITS, called CONDUITS_DST, which links traffic micro-simulation with other predictive models (emissions, accidents, accessibility etc.). The research provides performance evaluation framework for urban traffic management and ITS in a novel decision support tool, using the output of microscopic and macroscopic traffic simulation tools. City's involvement is in the area of the development of methodologies for predictive evaluation and the conduct of the validation case studies.

Networks and Cyber Security

Project: REACH (Rural broadband intErnet Access using Cooperative mesh networking in wHite space spectrum), EU-India Research and Innovation Partnership, V. Rakocevic

Recently, the Centre has been involved in a successful bid for the project REACH (Rural broadband intErnet Access using Cooperative mesh networking in wHite space spectrum). This project will develop a strong cluster-to-cluster partnership between research centres in the EU and India to develop advanced technical solutions for providing high-speed broadband Internet access in rural India by deploying cooperative mesh networking in the unlicensed (white space) spectrum. The project is supported by the EU-India Research and Innovation Partnership and includes ten partners from India and the EU countries.

Funded collaborations (V. Rakocevic): The Centre has a longstanding collaboration with the T-Systems Research Labs in Germany (since 2006), with several research projects on the operation of WiMAX and LTE networks jointly completed during the last 10 years.

Project: EPSRC: App Collusion Detection (ACID), (2014-2017, City: £280,000), T. Chen (PI)

City is collaborating with Swansea U., Coventry U., and McAfee/Intel to develop new detection methods for Android apps that are capable to colluding together to overcome the permission restrictions in Android smart phones and tablets. Permissions is one of Android's built-in security mechanisms to keep mobile devices safe from malicious apps. However, colluding apps have been able to work together for malicious actions, bypassing permissions, and traditional antivirus software Is not able to detect collusion. McAfee will help to commercialise the new detection methods in their Global Threat Intelligence System. Prof T. Chen is a co-director of the Cyberterrorism Project (www.cyberterrorism-project.org).

Mathematical Methods and Optimisation

Project: A-DAP, Marie Curie Intra-European Fellowships (IEF) Call: FP7-PEOPLE-2012-IEF : "Approximate Solutions of the Determinantal Assignment Problem and distance problems" (2013-2015, City: €309,235) N. Karcanias (PI) and Dr. J. Leventides (Advanced Fellow)

The Determinantal Assignment Problem (DAP) provides an abstract formulation unifying the study of pole, zero assignment of linear systems. DAP is equivalent to finding solutions to an inherently non-linear problem and its determinantal character demonstrates the significance of exterior algebra and classical algebraic geometry. The research aims to provide solutions for non-generic frequency assignment problems and handle problems of model uncertainty. This is achieved by developing robust approximate solutions to the purely algebraic DAP framework and thus transforming existence results and general computational schemes to tools for control design. The research involves the computation of distances between Grassmann and families of Linear varieties, introducing a new robust methodology for Global Linearisation using homotopy theory and finally developing an integrated framework for approximate solutions of DAP.

Recently awarded PhDs (since 2008)

Research student Supervisor Completed Thesis title
Mr G. Petroulakis Professor N. Karcanias 2015 The Approximate Determinantal Assignment Problem
Ms N. Danilova Professor D. W. Stupples 2014 Application of computational linguistics and evidential analysis to web-based intelligence information formulation
Mr Yau Chung Chan Dr E. Milonidis 2014 A novel electric power quality monitoring system for transient analysis
Mr H. Zhang Professor N. Karcanias 2014 Smart grid technologies and implementations
Mr H. I. El Sayed Professor N. Karcanias 2014 Utility application of power electronics: a case for investing in smart online energy systems
Mr A. Pantelous

Professor N. Karcanias

2014 Solutions properties and techniques for implicity systems
Mr A. J. Spurgin Professor D. W. Stupples 2013 Application of cybernetic models of nuclear power organisations to the study of nuclear power safety and economics
Mr I. Elgayar Dr E. Milonidis 2013 Mathematical Modelling, Flight Control System Design and Air Flow Control Investigation for Low Speed UAVs
Mr P. Lee Professor N. Karcanias 2013 A practical role of smart metering in smart grids development and applications
Mr S. Jahromizadeh Dr V. Rakocevic 2013 Joint Rate Control and Scheduling for Providing Bounded Delay with High Efficiency in Multihop Wireless Networks
Mr Ching Lap Chan Dr E. Milonidis 2012 Semantic Annotation in Knowledge Engineering, e-Learning and Computational Linguistics
Mr G. Girgoriou Professor N. Karcanias 2012 Structure Evolving Systems: Model Structure Evolution and System Properties
Mr Fang Yuan Xu Professor N. Karcanias 2012 Smart Grid Framework Analysis and Artificial Neural Netowrk in Load Forecast
Mr R. Vargas Canas Professor P. Liatsis 2012 Automated Analysis of Fluorescein Angiography of the Human Retina
Mr J. Kearns Thomas 2012 Comparing the risks of diverse methods of electricity generation using the J-alue framework
Mr Yin Wang Professor P. Liatsis 2011 Blood vessel segmentation and shape analysis for quantification of coronary artery stenosis in CT angiography
Mr Ali Zifan Professor P. Liatsis 2011 Integration of Geometric and Finite Element Modelling of the Thorax for EIT Lung Imaging
Mr D. Christou Professor N. Karcanias 2011 ERES methodology and approximate algebraic computations
Mr R. Ahmadi Professor M. Newby 2011 Investigation of photoplethysmography and arterial blood oxygen saturation during artificially induced peripheral hypoperfusion utilising multimode photometric sensors
Ms Y. Ma Lai 2011 Intelligent Energy Management System - Techniques and Methods
Mr P. Kantartzis Professor P. Liatsis 2011 Multilevel soft-field tomography
Mr P. Behbahani Dr V. Rakocevic 2011 Connection Robustness for Wireless Moving Networks Using Transport Layer Multi-homing
Mr O. Pearce Professor D. W. Stupples 2011 Systems analysis of the techno-economic investment required for coal generation with carbon capture and storage
Mr G. Galanis Professor N. Karcanias 2010 Dynamic polynomial combinants and linear systems
Mr I. Lucic Professor N. Karcanias 2010 Risk and Safety in Engineering Processes
Mr S. H. Alghamdi Professor D. W. Stupples 2010 Human performance in air traffic control systems and its impact on safety
Mr D. Vujatovic Lai 2010 Power quality improvement using FACTS devices with particular emphasis on electric traction
Mr D. Polyzos Professor N. Karcanias 2010 Measuring System Properties and Structured Diagnostics for the Selection of Sensors, Actuators Placement and Eigenstructure Assignment
Mr M. J. Chester Professor D. W. Stupples 2010 Using municipal solid waste composition data to estimate the carbon footprint of managing UK MSW: A method to assist waste management firms with strategic planning and compliance with emerging EU legislation
Mr L. Zhou Lai 2010 Smart grid analysis with particular references to power quality and load forecast
Mr D. Sivchenko Dr V. Rakocevic 2010 QoS aware seamless mobility support in IP based next generation networks
Mr A. Papageorgiou Professor N. Karcanias 2009 Stability of Internal Systems Descriptions
Mr. Q. P. Shang Lai 2009 Intelligent computing for 2D spatial information interpolation in GIS
Mr N. Bayer Dr V. Rakocevic 2009 Scheduling mechanisms for carrier-grade wireless mesh networks
Mr E. Sagianos Professor N. Karcanias 2009 Structural identification and the optimal assignment problem
Mr M. Rosenschon Dr V. Rakocevic 2009 Internet gateway discovery for mobile ad hoc networks
Mr R. Nandakumar Professor G. Halikias 2008 Robust Control Design using Quantitative Feedback Theory
Mr R. Basaru Dr E. Alonso   Adaptable Health Systems
Mr Y. Al-Mimi Dr E. Alonso   The Routine Health Systems in Palestine
Mr C. Apostolopoulos Professor G. Halikias   Risk Assessment for Change Management within Project Management: A Hierarchical Model Process Approach

Explore City's current research degree opportunities in this field

Events

For a list of upcoming events, please see the foot of this page.

Seminars 2018-19

  • 25th September 2018: Professor Matilde Santos, University Complutense of Madrid on "Applications of intelligent methods for control" Read the Abstract
  • 9th October 2018: Dr Dimitrios Papadaskalopoulos, Imperial College London on "Bi-level optimisation and game-theoretic approaches for modelling low-carbon deregulatd electricity markets" Read the Abstract
  • 16th October 2018: Dr Ioannis Konstantelos, Imperial College London on "Facing the Uncertainty: Data-Driven Power System Operation" Read the Abstract
  • 23rd October 2018: Dr Eric Kerrigan, Reader, Imperial College London on  "Dynamic Optimization with Convergence Guarantees". Read the Abstract
  • 30th October 2018: Thomas Morstyn, Research Fellow,  Department of Engineering Science at the University of Oxford on "Decentralised Flexibility Markets and Peer-to-Peer Energy Trading". Read the Abstract
  • 7 November 2018: Dr Thomas Berger, Universität Hamburg, Germany on “Funnel cruise control”.  Read the Abstract
  • 4th December 2018 Dr Ioannis Lestas, University of Cambridge, on "Distributed control and optimazation in power grids". Read the Abstract.
  • 18th February 2019: Dr Shaojie Zhang, Associate Professor, Nanjing University of Aeronautics & Astronautics on"  Fault Tolerant Control with Guaranteed Transient Performance for Flying Wing Aircraft " Read the Abstract
  • 18th March 2019: Dr Agathoklis Giaralis, Senior Lecturer in Structural Engineering, City, University of London on "Compressive wireless vibration-based health monitoring of civil engineering structures" Read the Abstract
  • 10th April 2019: Joachim Brandt, Smart Energy and Electric Vehicles Lead, Gemserv Limited, "Electric Vehicle Governance Framework: Managing the transition towards EVs and CAVs."  Read the Abstract

Past seminars (2014-15)

Recent major public events

Recent research workshops

Publications

Sample of representative recent publications

Control of Complex Systems

Control Theory and Design

G. Halikias, A. Papageorgiou, and N. Karcanias, 2010. "Non-overshooting stabilization via state and output feedback", International Journal of Control, Vol. 83, No. 6, June 2010, pp. 1232-1247

N. Karcanias, G. Halikias and A. Papageorgiou, 2010, "Strong stability of internal system descriptions", International Journal of Control, Volume 83, Issue 1, pp. 182-205

G.D. Halikias, N. Karcanias and A. Papageorgiou, 2013, "The distance to strong stability", Linear Algebra and Its Applications 439, pp. 2721-2735

D. Vafiadis and , N Karcanias, 2012, "Disturbance and Input-Output Decoupling of Singular Systems", Automatica Vol 48 , pp. 1650-1657

E. Milonidis, A Kostarigka , N Karcanias, 2011 "Finite Settling Time Stabilization:The Robust SISO Case", International Journal of Control, Volume 84, Issue 9, September 2011, pp. 1521-1532

J. Leventides and N. Karcanias, 2008. "Structured Squaring Down and Zero Assignment", International Journal Control, Vol.81, pp. 294-306

N. Karcanias, 2008. "Structure Evolving Systems and Control in Integrated Design", IFAC Annual Reviews in Control, Volume 32, Issue 2, December 2008, pp. 161-182; doi:10.1016/j.arcontrol.2008.07.004

J. Leventides, N. Karcanias, I. Meintanis and E. Milonidis, 2014, "Reduced Sensitivity Solutions to Global Linearization of the Pole Assignment Map", Proceedings of the 19th IFAC World Congress 2014, 24-29 August 2014, Cape Town, South Africa

M. Tomas-Rodriguez, and S.P. Banks, 2013, "An iterative approach to eigenvalue assignment for nonlinear systems", International Journal of Control 86(5) .doi:10.1080/00207179.2013.765037

Multi-agent Systems and Intelligent Methods

S. Li, M. Fairbank, C. Johnson, D. C. Wunsch, E. Alonso, and J. L. Proaño, 2014, "Artificial Neural Networks for Control of a Grid-Connected Rectifier/Inverter Under Disturbance, Dynamic and Power Converter Switching Conditions", IEEE Transactions on Neural Networks and Learning Systems, 25(4), pp. 738-750

E. Mondrago, J. Gray, E. Alonso, C. Bonardi, D. J. Jennings1,5, 2014 "SSCC TD: A Serial and Simultaneous Configural-Cue Compound Stimuli Representation for Temporal Difference Learning", PLoS ONE, 9(7): e102469. doi: 10.1371/journal.pone.0102469

J. Teichmann, M. Broom, E. Alonso, 2013, "The application of temporal difference learning in optimal diet models", Journal of Theoretical Biology, 340(7), pp. 11-16. doi: 10.1016/j.jtbi.2013.08.036

M. Fairbank, E. Alonso, and D.Prokhorov, 2013 "An Equivalence Between Adaptive Dynamic Programming With a Critic and Backpropagation Through Time", IEEE Transactions on Neural Networks and Learning Systems, 24(12), pp. 2088-2100. doi: 10.1109/TNNLS.2013.2271778

Networks Theory

T. Berger, G. Halikias, and N. Karcanias, 2015. "Effects of dynamic and non-dynamic element changes in RLC networks", International Journal of Circuit Theory and Applications, Vol.43, pp. 36-59 .DOI:10.1002/cta.1923

J. Leventides, M. Livada,and N. Karcanias, 2014. "McMillan Degree of Impedance, Admittance of RLC Networks", Proceedings of 21st International Symposium on Mathematical Theory of Networks and Systems (MTNS 2014), July 7-11, 2014, University of Groningen, The Netherlands

Unstable Vehicle Dynamics

S. A. Evangelou, D.J.N. Limebeer, M. Tomas-Rodriguez, 2013, "Suppression of Burst Oscillations in Racing Motorcycles", Journal of Applied Mechanics-Transaction of the ASME, Vol: 80, ISSN: 0021-8936

S.A Evangelou, and M. Tomas-Rodriguez, 2014, "Motorcycle Dynamic Modes and Passive Steering Compensation", in Modelling, Simulation and Control of Two-Wheeled Vehicles (eds M. Tanelli, M. Corno and S. M. Savaresi), John Wiley & Sons, Ltd, Chichester, UK. doi: 10.1002/9781118536391.ch9

N. Marichal, M. Tomas-Rodriguez, A. Hernandez, S. Castillo and P. Campoy, 2013, "Vibration reduction for vision systems on board UAV using a neuro-fuzzy controller", Journal of Vibration and Control, 1-12

Power Systems

C.A. Christodoulou, L. Ekonomou , N. Papanikolaou , I.F Gonos., 2014 "Effect of the grounding resistance to the behaviour of high-voltage transmission lines' surge arresters", IET Science, Measurement and Technology, (DOI) 10.1049/iet-smt.2014.0017

S. Lazarou , V. Vita, P. Karampelas , L. Ekonomou, 2013, "A power system simulation platform for planning and evaluating distributed generation systems basedon GIS", Energy Systems, (DOI) 10.1007/s12667-013-0082-4

L. Ekonomou , S. Lazarou , G.E. Chatzarakis , V. Vita, 2012, "Estimation of wind turbines optimal number and produced power in a wind farm using an artificial neural network mode", Simulation Modelling Practice and Theory, Vol. 21, No. 1, pp. 21-25

P. Karampelas , L. Ekonomou , S. Panetsos , G.E. Chatzarakis, 2011 "LPAT: An interactive simulation tool for assessing the lightning performance of Hellenic high voltage transmission lines", Applied Soft Computing, Vol. 11, No. 1, pp. 1380-1387

Engineering Systems

Systems Engineering

A.J. Spurgin, D. W. Stupples, 2012, "Nuclear Industry Organizations: Shaped by Accidents", International Journal of Engineering Management and Economics 2012 (IJEME) ISSN (Online): pp. 1756-5162 - ISSN (Print): pp. 1756-5154

A. J. Spurgin, D. W. Stupples, 2012, "Impact of Accidents on Organizational Aspects of Nuclear Utilities", International Journal of Engineering Management and Economics 2012 (IJEME) ISSN (Online): pp. 1756-5162 - ISSN (Print): pp. 1756-5154

Systems Design

N. Karcanias, and A.G. Hessami, 2011, "Integration of Operations in Process Systems: Complexity and Eemergent Properties", Proceedings of IEEE SysCon 2011 Conference, April 4-7, 2011, Montreal, Quebec, Canada

Systems and Emergent Properties

A. G. Hessami, N. Karcanias, 2009 "Complexity, Emergence and the Challenges of Assurance The need for a Systems Paradigm", Proceedings, 2009 IEEE International Systems Conference, IEEE SysCon 2009, Vancouver Canada, March 23-26

N. Karcanias, and A.G. Hessami, 2010, "Complexity and the notion of System of Systems: Part (i): General Systems and Complexity; Part (ii): Defining the Notion of System of Systems", Proceedings of 2010 World Automation Congress International Symposium on Intelligent Automation and Control (ISIAC) 19 - 23 September 2010, Kobe Japan

A.G. Hessami, and N. Karcanias, 2010, "System Assurance, Complexity and Emergence: The need for a Systems Based Approach", Communications in Computer and Information Science, Springer, Editors: Sérgio Tenreiro de Magalhães, Hamid Jahankhani and Ali G. Hessami; Volume 92, 2010, pp. 202-215; DOI: 10.1007/978-3-642-15717-2

E. Alonso, N. Karcanias, and A.G. Hessami, 2013, "Symmetries, groups and groupoids for Systems of Systems", in Proceedings of the 7th IEEE International Systems Conference (SysCon 2013), pp. 244-250. Piscataway, NJ: IEEE Press. Orlando, FL, 15-18 April 2013

N. Karcanias, 2013. "Systems of Systems: A Control Theoretic View", Proceedings of IEEE SMC 2013 Conference (SMC2013:S01), October 13-16, Manchester

N. Karcanias, and A.G. Hessami, 2011. "Multi-Modal Transportation as a System of Systems", Proceedings of UTSG 43rd Annual Conference, Open University, 5-7 January

Transportation Systems

I. Kaparias, M.G.H. Bell, A. Miri, C. Chan and B. Mount. 2012, "Analysing the perceptions of pedestrians and drivers to shared space", Transportation Research Part F: Traffic Psychology and Behaviour, vol. 15, pp. 297-310. http://dx.doi.org/10.1016/j.trf.2012.02.001

I. Kaparias, M.G.H. Bell, W. Dong, A. Sastrawinata, A. Singh, X. Wang, and B. Mount, 2013, "Analysis of pedestrian-vehicle traffic conflicts in street designs with elements of shared space", Transportation Research Record, vol. 2393, pp. 21-30. http://dx.doi.org/10.3141/2393-03

V. Trozzi, G. Gentile, M.G.H. Bell, and I. Kaparias, 2013, "Dynamic user equilibrium in public transport networks with passenger congestion and hyperpaths", Transportation Research Part B: Methodological, vol. 57, pp. 266-285. http://dx.doi.org/10.1016/j.trb.2013.06.011

I. Kaparias, I., M.G.H. Bell, T. Biagioli, L. Bellezza, and B. Mount, 2014, "Behavioural analysis of vehicle-pedestrian interactions: The case of street designs with elements of shared space", 93rd Annual Meeting of the Transportation Research Board, Washington, DC, USA. http://trid.trb.org/view.aspx?id=1288448

Networks and Cyber Security

Wireless Networks

S Jahromizadeh, V Rakocevic, 2014, "Joint Rate Control and Scheduling for Providing Bounded Delay with High Efficiency in Multihop Wireless Networks", IEEE/ACM Transactions on Networking, 22(5), pp. 1686-1698 (2014)

J K Gruber, M Prodanovic, S Jahromizadeh, V Rakocevic, 2014, "Application-oriented Modelling of Domestic Energy Demand", International Journal of Electrical Power and Energy Systems, Vol.61, pp. 656-664 (2014)

H K Qureshi, S Rizvi, M Saleem, S A Khayam, V Rakocevic, M Rajarajan, 2013 "Evaluation and Improvement of CDS-based Topology Control for Wireless Sensor Networks", Springer Wireless Networks, 19(1), pp. 31-46 (2013)

S Rizvi, H K Qureshi, S Ali Khayam, V Rakocevic and M Rajarajan, 2012 "A1: An Energy Efficient Topology Control Protocol for Connected Area Coverage in Wireless Sensor Networks", Journal of Networking and Computer Applications, 35(2), pp. 597-605 (2012)

Cryptography, Cyber protection

N. Danilova, D.W. Stupples, 2012, "Application of Natural Language Processing and Evidential Analysis to Web-Based Intelligence Information Acquisition", 2012, IEEE sponsored European Intelligence Informatics Conference (EISIC) Proceeding August 2012, Odense Denmark

D. Dudorov, D.W. Stupples, 2013, "Optimal Investment in IT Security: cost-effective cyber security to protect assets at risk", Probabilistic Safety and Management PSAM 11, PSAM (IEEE) Proceeding August 2013, Uppsala, Sweden

T. Chen, J-C. Sanchez-Aarnoutse, J. Buford, 2011 "Petri nets models for cyber-physical attacks in smart grid", IEEE Trans. on Smart Grid, vol. 2, Dec. 2011, pp. 741-749

Q. Xu, T. Chen, Y. Hu, P. Gong, 2014, "Write pattern format algorithm (WPFA) for reliable NAN-based SSDs", IEEE Trans. on Circuits and Systems, vol. 61, July 2014, pp. 516-520

S. Li, G. Oikonomou, T. Tryfonas, T. Chen, L. Xu, 2014, "A distributed consensus algorithm for decision-making in service-oriented Internet of Things", IEEE Trans. on Industrial Informatics, vol. 10, Feb. 2014, pp. 1461-1468

A. Olteanu, Y. Xiao, J. Liu, T. Chen, C. L. P. Chen, 2013, "Non-intrusive tracing in the Internet", Security and Communication Networks, vol. 6, Issue 7, July 2013

Mathematical Methods and Computations

Mathematical Systems Theory

N. Karcanias and G. Halikias, 2013, "Approximate Zero Polynomials of Polynomial Matrices and Linear Systems", Linear Algebra and its Applications, 439, pp. 1091-1103

J. Leventides, G. Petroulakis and N. Karcanias, 2014, "The Applroximate Determinantal Assignment Problem", Linear Algebra and its Applications, Vol. 461, 15 November 2014, pp. 139-162

Approximate Algebraic Computations

G. Halikias, G. Galanis, N. Karcanias and E. MIilonidis, 2013 "Nearest common root of polynomials, approximate Greatest Common Divisor and the structured singular value", IMA Journal of Mathematical Control and Information, Vol 30, pp. 423-442

D. Christou, N. Karcanias, M. Mitrouli, 2010. "The ERES method for computing the approximate GCD of several polynomials", Applied Numerical Mathematics. Volume 60, Issues 1-2, January-February 2010, pp. 94-114

D. Christou, N. Karcanias, M. MIitrouli, and D. Triantafylou, 2011, "Numerical and Symbolical Methods for the GCD of Several Polynomials" in Numerical Linear Algebra in Signals, Systems and Control, Chapter 7, Edited by Paul Van Dooren, Shankar P. Bhattacharyya, Raymond H. Chan, Vadim Olshevsky and Aurobinda Routray, Lecture Notes in Electrical Engineering, 2011, Volume 80, pp. 123-144

Linear Algebra

N. Karcanias, 2013, "Generalised Resultants, Dynamic Polynomial Combinants and the Minimal Design Problem", International Journal of Control, Special Issue for A.G.J. Macfarlane, Vol. 86, No. 11, pp. 1946-1964

N. Karcanias, 2013, "Geometric and Algebraic Properties of Minimal Bases of Singular Systems", International Journal of Control, Special Issue for A.G.J. Macfarlane, Vol. 86, No. 11, pp. 1924-1945

J. Leventides and N. Karcanias, 2009, "Zero Assignment of Matrix Pencils by Additive Structured Transformations", Linear Algebra and its Applications, volume 431, issue 8, pp. 1380- 1396. http://dx.doi.org/10.1016/j.laa.2009.05.033

Optimisation Methods

J. Kiskiras, I.M. Jaimoukha and G.D. Halikias, 2013, "An explicit state-space solution to the one-block super-optimal distance problem", Mathematics of Control, Signals and Systems, 25, pp. 167-196

All full members' recent publications