Alie El-Din Mady

1- Alie El-Din Mady, Andrea Tonini and Davide Finardi, "Design Space Exploration of PISA Architecture For ONU Auto-discovery Process", 6th International Conference on Electrical Engineering (ICEENG 2008), Cairo, Egypt, pp. 21-30, 27-29 May 2008. 

Abstract: The goal of the paper is to optimize the PISA architecture for the ONU Auto-discovery process. This Auto-discovery process has been written in C language following the IEEE 802.3ah MPCP standard. Using SimpleScalar simulation tool, the architecture profile is evaluated in order to decide the range of the design exploration. Then, using Wattch and CACTI  simulation tools the CPI, average power consumed and cache area are calculated for each design point, the cost function is defined and evaluated for each design point using greedy strategy. The Auto-discovery process has been written in VHDL and using Synopys power compiler [4] the power consumption has been calculated and then we compared between the VHDL implementation and the PISA architecture from the power consumption point of view. 

2- Alie El-Din Mady, Anirban Dutta Choudhury and G. Serazzi, "Performance Evaluation of Computer Memory Hierarchy", Performance Evaluation Modeling with JMT: Learning by Examples, Technical Report, Politecnico Di Milano, Milan, Italy, 27 Jan. 2008.

Abstract: In this Technical report, the General Purpose Computer Memory Architecture Model and Network-on-Chip Memory Architecture Model have been modelled in JMT modelling tool and MATLAB in order to evaluate the bottleneck of these two models 

3- A. Mady, M. Boubekeur and G. Provan, "Integrated Simulation Platform for Optimized Building Operations",  Proc. International Conference on Intelligent Building and Management (ICIBM 2009),  pp. 626-631, Singapore, 17-19 April 2009.

Abstract: In order to develop an integrated system that can optimise building operations, all facets of monitoring, control and reconfiguration need to be integrated. To achieve this, we need to develop an integrated system model, together with associated sub-system interfaces. This links the low-level wireless/wired systems monitoring with multi-level control, building information management and user-preference inputs. In this paper we describe an integrated simulation platform that partially fulfils such objectives. We detail through a case study an integrated simulation platform allowing testing, refinement and optimization of the design at an early stage. The paper provides a detailed simulation results and outlines the future works.

4- Alie El-Din Mady and Andrea Tonini, "A VHDL Implementation of ONU Auto-discovery
Process for EPON", International Conference on Networking and Media Convergence (ICNM’09), pp. 36-41, Cairo, Egypt, 24-25 March 2009.

Abstract: Recently EPON has been introduced to represent the convergence of low-cost Ethernet equipment and fiber infrastructure, it is appeared to be the best candidate for the next-generation access network. Auto-discovery process is an important process in EPON system. Indeed, this paper provides a MAC design following the IEEE 802.3ah standard of the MPCP auto-discovery process at the ONU side. It describes as well the validation and verification steps using an OLT model and nally, the synthesis results are presented.

5- A. Mady, M. Boubekeur and G. Provan, "Compositional Model-Driven Design of Embedded Code for Energy-Efficient Buildings", 7th IEEE International Conference on Industrial Informatics (INDIN 2009), Cardiff, UK, 24-26 June 2009.

Abstract: In embedded software development, model-driven design is well recognized. In this article we describe a compositional model-driven approach for auto-generating embedded code for improving the energy efficiency of building automation applications. We show how we can use a componentbased hybrid-systems modelling framework to generate models for simulation and verification. Then, we auto-generate embeddable code from these models. We empirically demonstrate this approach using the hybrid-systems tool Charon, for the domain of energy-efficient lighting control for smart buildings. The paper provides a detailed description of the code generation steps and outlines some results obtained through a simple lighting example.

6- M. Behrens, G. Provan, M. Boubekeur and A. Mady, "Model-Driven Diagnostics Generation for Industrial Automation", 7th IEEE International Conference on Industrial Informatics (INDIN 2009), Cardiff, UK, 24-26 June 2009.

Abstract: We propose a methodology for overcoming the current approach of writing diagnostics code for industrial automation applications after the system is designed, which results in significant extra effort/cost, and potential discrepancies between design and diagnostics output. We show how we can automatically generate diagnostics from a more complex simulation model. We show how a model-transformation framework can transform a hybrid-systems simulation model into a propositional-logic diagnostics model with appropriate transformation rules. We illustrate our approach with an example from the domain of control for building lighting systems.

7- G. Provan, J. Ploennigs, M. Boubekeur, A. Mady and A. Ahmed, "Using BIM Data for Generating and Updating Diagnostic Models", The Twelfth International Conference on Civil, Structural and Environmental Engineering Computing, Funchal, Madeira, Portugal, 1-4 September 2009.

Abstract: We show how to use a Building Information Model (BIM) to structure fault detection and diagnostics (FDD) models for building applications, and also how BIM data can be used for learning model parameters for updating the FDD parameters following building commissioning. We propose an approach for generating FDD rules using a generic meta-model together with the data defined in a BIM or Building Management System design database. Our meta-model is a detailed model that identifies a key set of properties of a system, e.g., connectivity and functionality of the devices that comprise the system. We then show how we can tune the parameters of such FDD rules using data from a building simulation model, or from actual building data collected in a data warehouse. We illustrate our approach using a lighting systems model within an intelligent building application.

8- Alie El-Din Mady, Menouer Boubekeur, Gregory Provan, "Towards Integrated Hybrid Modelling and Simulation Platform for Building Automation Systems; First Models for a Simple HVAC System", Proc. 9th Information Technology and Telecommunication Conference (9th IT&T), page 191-199, Dublin, Ireland, 22-23 October 2009.

Abstract: The aim of our research work is the development of an integrated platform for modelling and simulation of building operation systems. This platform uses hybrid automata which allows models for continuous and discrete behaviours. A model-driven hierarchical hybrid automata behaving in a multi-agent mode is adopted to provide an efficient and coherent modelling, it also facilitates system integration. The paper introduces the modelling framework and provides the first results for modelling and simulation of a simple Heating, Ventilating, and Air Conditioning (HVAC) system for a single room.

9- Alie El-Din Mady, Menouer Boubekeur, Gregory Provan, "WSAN QoS Driven Control Model for Building Operations", 5th International Workshop on Soft Computing Models in Industrial Applications (SOCO 2010), Portugal, 16 -18 June, 2010.

Abstract: Currently wireless based control systems lack appropriate development methodologies and tools The control model and its underlying wireless network are typically developed separately, which can lead to unstable and suboptimal implementations. In this paper we introduce a hybrid-based design methodology that considers the performance parameters of the Wireless Sensor and Actuator Network (WSAN) in order to develop an optimized control system tailored to the specific application environment and sensor network conditions. We first identify the boundaries of the control parameters that maintain stable and optimal control model. Within these boundaries, we determine the optimal WSAN Quality of Service (QoS) parameters through a tuning process in order to reach to optimal Control/WSAN design as illustrated in the case study. The methodology has been illustrated through a distributed lighting control developed using our hybrid/multi-agent platform.

10- Alie El-Din Mady, Menouer Boubekeur, Gregory Provan,Conor Ryan, Kenneth N. Brown, "Intelligent Hybrid Control Model for Lighting Systems Using Constraint-Based Optimisation", 5th International Workshop on Soft Computing Models in Industrial Applications (SOCO 2010), Portugal, 16 -18 June, 2010.

Abstract: Lighting systems consume a considerable proportion of total energy budgets, particularly for retail and public-office applications, and hence their optimisation can save considerable amounts of energy. This paper proposes an intelligent control strategy to operate the office luminance in order to enhance user comfort and reduce energy consumption. The strategy is applied to an open office scenario, where the controller and the environments are modelled using a hybrid/multi-agent platform. The developed controller uses a constraint-based optimisation technique to compute the optimal settings.We describe the different modelling steps, including the optimisation technique, and outline the simulation results and potential energy
benefits of the proposed controller.

11- Alie El-Din Mady, Menouer Boubekeur, Gregory Provan, "Optimised Embedded Distributed Controller for Automated Lighting Systems", First Workshop on Green and Smart Embedded System Technology: Infrastructures, Methods and Tools (GREEMBED 2010), Sweden, 12 April 2010.

Abstract: The paper introduces a model-driven hybrid/multi-agent platform for the design and analysis of building automation systems. It describes an optimised parameterizable and predictive distributed control methodology for automated lighting systems. The modelling steps and the simulation results for a typical lighting system scenario are outlined throughout the paper. Moreover, the performance for the wireless network is evaluated. The contribution of the proposed lighting control strategy is highlighted by comparing it with several control techniques.

12- Andrea Tonini, Mohammad Al Hissi, Alie El-Din Mady, "EPON CWDM Optical Light Expander with Adaptive Prediction Scheduler", Proc. 1st International Conferences on Access Networks, Services and Technologies (ACCESS 2010), Valencia, Spain, 20 - 25 September, 2010.

Abstract: Fiber To The Home (FTTH) Passive Optical Networks (PON) are widespread in modern access networks. Among PONs, Ethernet-PON (EPON) networks stand out, as they have the advantage of combining simplicity and low cost devices with a wide bandwidth provision. As a matter of fact, the Epon Optical Light Expander (OLE) has been designed to improve the scalability and cost issues of EPON networks, adding, in this way, CWDM bandwidth enhancements without extra costs per subscriber. In this article, we empower the OLE with a new Adaptive Prediction Algorithm (APA) that allows for better performances in terms of per-user bandwidth assignment efficiency. Our algorithm shows an average packet delay that is 18% less than the standard Interleaved Polling Adaptive Control Protocol (IPACT) algorithm, simulated for medium traffic load conditions.

13- Alie El-Din Mady, Menouer Boubekeur, Gregory Provan, "Interactive Refinement of Distributed Control/WSAN Design for Optimal Building Operation Systems", 8th European Conference on Product & Process Modelling (ECPPM 2010), Cork, Ireland, 14 -16 September, 2010.

Abstract: Control systems which are embedded in a Wireless Sensor/Actuator Network (WSAN) can per-form sub-optimally if the control system and WSAN are designed independently. In Building Management System (BMS) applications, such sub-optimal performance can result in lower user comfort and potential control instability. In this paper, we provide a methodology for a WSAN/Control co-design that identifies de-sign requirements that jointly optimize over the WSAN and control parameters, thereby leading to high user comfort in multi-zone building applications. The developed methodology has been illustrated through a distributed and a typical PI centralized lighting control developed using our hybrid/multi-agent platform.

14- C. Ryan, K. N. Brown, A. Mady, M. Boubekeur, G. Provan, "A constraint-based intelligent controller for lighting systems", 8th European Conference on Product & Process Modelling (ECPPM 2010), Cork, Ireland, 14 -16 September, 2010.

Abstract: A major factor in energy wastage in retail and public-office buildings is the inefficient control of lighting systems. This paper presents a constraint based optimiser for lighting control which minimises energy usage while maintaining occupant satisfaction. This controller is coupled with a reactive controller which we simulate using a hybrid/multi-agent platform. We apply this control strategy to a simulated open office scenario, and outline the simulation results and potential energy savings of the proposed strategy.

15- Alie El-Din Mady, Andrea Tonini, "Ethernet Passive Optical Network (EPON) System: A VHDL Implementation of ONU Auto-discovery Process of the IEEE 802.3ah MPCP Protocol", book, LAP LAMBERT Academic Publishing, ISBN-13: 978-3843364966, 3 November, 2010.

16- A. Tonini, A. Mady, R. Alimur, "E-PON IPACT VHDL Implementation", Journal of Telecommunications, Volume 7, Issue 1, February 2011.

Abstract: Ethernet Passive Optical Networks (E-PON) are an effective solution for low cost FTTH access networks because of their simplicity and high speed features. While scalability is still the main issue of E-PON next generation networks, as they allow the highest number of subscribers to share the same PON infrastructure, the E-PON Dynamic Bandwidth Assignment (DBA) schedulers for the Time Division Multiplexing (TDM) cover a key role for an efficient E-PON bandwidth allocation. For this purpose, we have implemented in VHDL code the Interleaved Polling Adaptive Control Time (IPACT) algorithm. Furthermore, to test the whole design, we developed a complete VHDL test bench in order to evaluate and optimize the scheduling algorithm. This test bench allowed us to consider the critical points of the scheduler and the optimization margins in a real hardware environment. The whole design is deployed over hardware E-PON devices using FPGA designs and considering the hardware area and time constraints.