• Conference Object  

      Fault diagnosis in discrete event systems modeled by petri nets with outputs 

      Ru, Y.; Hadjicostis, Christoforos N. (2008)
      In this paper, we study fault diagnosis in discrete event systems modeled by Petri nets with outputs, i.e., Petri nets with place sensors and transition sensors. Faults are modeled as unobservable transitions and are divided ...
    • Conference Object  

      Fiber laser sensor array 

      Alavie, A. Tino; Karr, Shawn E.; Othonos, Andreas S.; Measures, Raymond M. (Publ by Society of Photo-Optical Instrumentation Engineers, 1993)
      An intracore Bragg grating and a broadband reflector are used as cavity end mirrors of a tunable Erbium-doped fiber laser where the Bragg grating serves the dual purpose of the tuning element and the sensor. This fiber ...
    • Article  

      FireWatch: G.I.S.-assisted wireless sensor networks for forest fires 

      Andreou, Panayiotis G.; Constantinou, George; Zeinalipour-Yazdi, Constantinos D.; Samaras, George S. (2012)
      Traditional satellite and camera-based systems, are currently the predominant methods for detecting forest fires. Our study has identified that these systems lack immediacy as detected fires must gain some momentum before ...
    • Article  

      Frequency domain and dynamic game methods for actuator/sensor selection in systems with sector nonlinearities 

      Demetriou, M. A.; Charalambous, Charalambos D. (2001)
      The purpose of this note is to provide a method for placing actuators and sensors in systems with nonlinear dynamics wherein the choices for actuator and sensor locations are such that the resulting system is rendered ...
    • Article  

      Graphical inference for multiple intrusion detection 

      Le, T.; Hadjicostis, Christoforos N. (2008)
      In this paper, we consider vulnerabilities of networked systems and develop a multiple intrusion detection system (MIDS) which operates by running belief propagation on an appropriately constructed weighted bipartite graph. ...
    • Conference Object  

      Graphical inference methods for fault diagnosis based on information from unreliable sensors 

      Le, T.; Hadjicostis, Christoforos N. (2006)
      In this paper, we study the application of decoding algorithms to the multiple fault diagnosis (MFD) problem. Prompted by the resemblance between graphical representations for MFD problems and parity check codes, we develop ...
    • Conference Object  

      HomeWeb: An application framework for Web-based smart homes 

      Kamilaris, Andreas; Trifa, V.; Pitsillides, Andreas (2011)
      Household appliances are being equipped with embedded micro-controllers and wireless transceivers, offering smart behavior. These augmented appliances form wireless networks and transform residential areas into smart homes. ...
    • Conference Object  

      Integrated platform for autonomic computing 

      Panayiotou, Christoforos; Fytros, E.; Tsetsos, V.; Samaras, George S.; Hadjiefthymiades, S.; Piquet, D. (2009)
      IPAC (Integrated Platform for Autonomic Computing) aims at delivering a middleware and service creation environment for developing embedded, intelligent, collaborative, context-aware services in mobile nodes. IPAC relies ...
    • Conference Object  

      Intelligent cruise control: Theory and experiment 

      Ioannou, Petros A.; Xu, Z.; Eckert, S.; Clemons, D.; Sieja, T. (Publ by IEEE, 1993)
      Automated vehicle control systems (AVCS) is an important part of intelligent vehicle and highway systems (IVHS) whose long term goal is to improve freeway capacity and safety and reduce pollution through vehicle and highway ...
    • Conference Object  

      Intelligent embedded and real-time ANN-based motor control for multi-rotor unmanned aircraft systems 

      Michael, G.; Efstathiou, N.; Mantis, K.; Theocharides, Theocharis; Pau, D. (2017)
    • Conference Object  

      The micropulse framework for adaptive waking windows in sensor networks 

      Zeinalipour-Yazdi, Constantinos D.; Andreou, Panayiotis G.; Chrysanthis, Panos K.; Samaras, George S.; Pitsillides, Andreas (2007)
      In this paper we present MicroPulse, a novel framework for adapting the waking window of a sensing device S based on the data workload incurred by a query Q. Assuming a typical tree-based aggregation scenario, the waking ...
    • Conference Object  

      Mimicking the bird flocking behavior for controlling congestion in sensor networks 

      Antoniou, Pavlos Ch.; Pitsillides, Andreas; Engelbrecht, A.; Blackwell, T. (2010)
      This study deals with the problem of congestion in wireless sensor networks (WSNs) and proposes a robust and self-adaptable nature-inspired congestion control approach for realtime event-based applications. WSNs face ...
    • Conference Object  

      MINT views: Materialized In-Network Top-k views in sensor networks 

      Zeinalipour-Yazdi, Constantinos D.; Andreou, Panayiotis G.; Chrysanthis, Panos K.; Samaras, George S. (2007)
      In this paper we introduce MINT (Materialized In-Network Top-k) Views, a novel framework for optimizing the execution of continuous monitoring queries in sensor networks. A typical materialized view V maintains the complete ...
    • Article  

      Mixed manual/semi-automated traffic: A macroscopic analysis 

      Bose, A.; Ioannou, Petros A. (2003)
      The use of advanced technologies and intelligence in vehicles and infrastructure could make the current highway transportation system much more efficient. Semi-automated vehicles with the capability of automatically following ...
    • Article  

      A Multiplexed Bragg Grating Fiber Laser Sensor System 

      Alavie, A. Tino; Karr, S. E.; Measures, R. M.; Othonos, Andreas S. (1993)
      A technique for multiplexing Bragg gratings in a fiber laser arrangement is described. This technique has successfully been used to multiplex two and three Bragg gratings with very little crosstalk. The Bragg grating laser ...
    • Conference Object  

      On a hybrid model for max-min congestion controllers 

      Lestas, Marios; Ioannou, Petros A.; Pitsillides, Andreas (2004)
      In this paper we address the congestion control problem in computer networks offering a single class of best effort service. The problem is viewed as a resource allocation problem. The objective is to distribute the available ...
    • Conference Object  

      On a hybrid model for max-min congestion controllersAAA 

      Lestas, Marios; Ioannou, Petros A.; Pitsillides, Andreas (2004)
      In this paper we address the congestion control problem in computer networks offering a single class of best effort service. The problem is viewed as a resource allocation problem. The objective is to distribute the available ...
    • Conference Object  

      Optimal sensor selection for structural observability in Discrete Event Systems modeled by Petri nets 

      Ru, Y.; Hadjicostis, Christoforos N. (2007)
      This paper studies sensor selection problems in Discrete Event Systems modeled by Petri nets with outputs (i.e., Petri nets with both transition sensors and place sensors). The goal is to place sensors so as to maintain ...
    • Article  

      Partially observable nonlinear risk-sensitive control problems: Dynamic programming and verification theorems 

      Charalambous, Charalambos D. (1997)
      In this paper, we consider continuous-time partially observable optimal control problems with exponential-of-integral cost criteria. We derive a rigorous verification theorem when the state and control enter nonlinear in ...
    • Book  

      Physics, chemistry and technology of solid state gas sensor devices 

      Mandelis, Andreas; Christofides, Constantinos (Wiley, 1993)