Dimitrios Georgoulas | University of Thessaly (original) (raw)

Uploads

Papers by Dimitrios Georgoulas

Wireless sensor networks have been identified as one of the key technologies for the 21st century... more Wireless sensor networks have been identified as one of the key technologies for the 21st century. They consist of tiny devices with limited processing and power capabilities, called motes that can be deployed in large numbers of useful sensing capabilities. Even though, they are flexible and easy to deploy, there are a number of considerations when it comes to their fault tolerance, conserving energy and re-programmability that need to be addressed before we draw any substantial conclusions about the effectiveness of this technology. In order to overcome their limitations, we propose a middleware solution. The proposed scheme is composed based on two main methods. The first method involves the creation of a flexible communication protocol based on technologies such as Mobile Code/Agents and Linda-like tuple spaces. In this way, every node of the wireless sensor network will produce and process data based on what is the best for it but also for the group that it belongs too. The sec...

Wireless sensor networks (WSNs) have been identified as a promising technology that will allow pe... more Wireless sensor networks (WSNs) have been identified as a promising technology that will allow people and machines to interact with their environment in a revolutionary way. These networks, however, are facing limitations such as energy constraints of the sensor and difficulties in reprogramming the actual network. To address these limitations we propose a novel agent middleware. Namely In-Motes can be considered as an intelligent network which is deployed with no pre-installed application. Mobile agents are injected into the network, then migrate and clone across it, following specific rules and performing application specific tasks. By doing so, each mote is given a certain degree of perception, cognition and control, forming the basis of its intelligence. Linda-like tuplespaces and federated system architecture are proposed as the means for collaboration and coordination of the agents. In order to make the network more robust, certain behavioural rules are proposed taking inspiration from a community of bacterial strains. These preserve each agent's certain degree of autonomy and identifies a highly coordinated architecture for them.

Το σύγχρονο τεχνολογικό επίπεδο έχει προσφέρει στην κοινωνία καινοτομίες σε όλους τους τομείς της... more Το σύγχρονο τεχνολογικό επίπεδο έχει προσφέρει στην κοινωνία καινοτομίες σε όλους τους τομείς της ζωής. Τέτοιες καινοτομίες στα πλαίσια της εφαρμογής και ενσωμάτωσης νέων τεχνολογιών παρατηρούνται και στον τομέα της υγείας και της ευρύτερης ιατρικής. Οι υπηρεσίες της τηλεϊατρικής5 προσανατολίζονται στην κατά το δυνατό αποδέσμευση του ασθενούς (χρήστη) από τους νοσοκομειακούς περιορισμούς στα πλαίσια των ελευθεριών που παρέχονται από τα συστήματα κινητών και προσωπικών επικοινωνιών. Η βασική επιδίωξη των υπηρεσιών αυτών είναι ο διαρκείς εξ αποστάσεως έλεγχος της κατάστασης της υγείας του ασθενούς μέσω της συλλογής επεξεργασίας , αξιολόγησης, αξιοποίησης και αποθήκευσης
κατάλληλης πληροφορίας.

The Fourth Advanced International …, Jan 1, 2008

In-Motes is a mobile agent middleware that generates an intelligent framework for deploying appli... more In-Motes is a mobile agent middleware that generates an intelligent framework for deploying applications in Wireless Sensor Networks (WSNs). In-Motes is based on the injection of mobile agents into the network that can migrate or clone following specific rules and performing application specific tasks. By doing so, each mote is given a certain degree of perception cognition and control, forming the basis for its intelligence. We have developed, implemented and evaluated a real time application in a dynamic environment to determine how well In-Motes achieves its goals. Namely, In-Motes Bins is an agent based In-Motes application for environmental monitoring sensing
light and temperature variations. Using In-Motes we were able to create and rapidly deploy our application on a WSN consisting of 10 MICA2 motes. Our application was tested in a wine store for a period of four months. In this paper we present the In-Motes Bins application and provide a detailed evaluation of its implementation. We also present a detailed analysis of In-Motes middleware in regards of its efficiency, adaptability and reliability inside the WSN.

Best Student Paper Award, Proceedings of the …, Jan 1, 2006

Wireless sensor networks (WSNs) have been identified as a promising technology that will allow pe... more Wireless sensor networks (WSNs) have been identified as a promising technology that will allow people and machines to interact with their environment in a revolutionary way. These networks, however, are facing limitations such as energy constraints of the sensor and difficulties in reprogramming the actual network. To address these limitations we propose a novel agent middleware. Namely In-Motes can be considered as an intelligent network which is deployed with no pre-installed application. Mobile agents are injected into the network, then migrate and clone across it, following specific rules and performing application specific tasks. By doing so, each mote is given a certain degree of perception, cognition and control, forming the basis of its intelligence. Linda-like tuplespaces and federated system architecture are proposed as the means for collaboration and coordination of the agents. In order to make the network more robust, certain behavioural rules are proposed taking inspiration from a community of bacterial strains. These preserve each agent’s certain degree of autonomy and identifies a highly coordinated architecture for them.

Mobile Wireless Communications …, Jan 1, 2007

scirp.org

Sensor networks are dense wireless networks of small, low-cost sensors, which collect and dissemi... more Sensor networks are dense wireless networks of small, low-cost sensors, which collect and disseminate en-vironmental data. Wireless sensor networks facilitate monitoring and controlling of physical environments from remote locations with better accuracy. They have applications in a variety of fields such as environ-mental monitoring; military purposes and gathering sensing information in inhospitable locations. Sensor nodes have various energy and computational constraints because of their inexpensive nature and adhoc method of deployment. Considerable research has been focused at overcoming these deficiencies through more energy efficient routing, localization algorithms and system design. Our survey presents the funda-mentals of wireless sensor network, thus providing the necessary background required for understanding the organization, functionality and limitations of those networks. The middleware solution is also investigated through a critical presentation and analysis of some of the most well established approaches.

In-Motes is a mobile agent middleware that generates an intelligent framework for deploying appli... more In-Motes is a mobile agent middleware that generates an intelligent framework for deploying applications in Wireless Sensor Networks (WSNs). In-Motes is based on the injection of mobile agents into the network that can migrate or clone following specific rules and performing application specific tasks. By doing so, each mote is given a certain degree of perception, cognition and control, forming the basis for its intelligence. Our middleware incorporates technologies such as Linda-like tuplespaces and federated system architecture in order to obtain a high degree of collaboration and coordination for the agent society. A set of behavioral rules inspired by a community of bacterial strains is also generated as the means for robustness of the WSN. In this paper, we present In-Motes and provide a detailed evaluation of its implementation for MICA2 motes.

scirp.org

Wireless sensor networks have been identified as one of the key technologies for the 21st century... more Wireless sensor networks have been identified as one of the key technologies for the 21st century. They consist of tiny devices with limited processing and power capabilities, called motes that can be deployed in large numbers over a physical environment providing the end user with a number of useful sensing capabilities. Even though, they are flexible and easy to deploy, there are a number of considerations when it comes to their fault tolerance, conserving energy and re-programmability that need to be addressed before we draw any substantial conclusions about the effectiveness of this technology. In order to overcome their limitations, we propose a middleware solution. A fault tolerant platform for deploying and monitoring applications in real time offers a number of possibilities for the end user giving him in parallel the freedom to experiment with various parameters, in an effort the deployed applications to run in an energy efficient manner inside the network. The proposed scheme is evaluated through the In-Motes EYE application aiming to test its merits under real time conditions. In-Motes EYE application which is an agent based real time In-Motes application developed for sensing acceleration variations in an environment. The application was tested in a prototype area, road alike, for a period of four months.

The Fourth Advanced International …, Jan 1, 2008

Best Student Paper Award, Proceedings of the …, Jan 1, 2006

Wireless sensor networks (WSNs) have been identified as a promising technology that will allow pe... more Wireless sensor networks (WSNs) have been identified as a promising technology that will allow people and machines to interact with their environment in a revolutionary way. These networks, however, are facing limitations such as energy constraints of the sensor and difficulties in reprogramming the actual network. To address these limitations we propose a novel agent middleware. Namely In-Motes can be considered as an intelligent network which is deployed with no pre-installed application. Mobile agents are injected into the network, then migrate and clone across it, following specific rules and performing application specific tasks. By doing so, each mote is given a certain degree of perception, cognition and control, forming the basis of its intelligence. Linda-like tuplespaces and federated system architecture are proposed as the means for collaboration and coordination of the agents. In order to make the network more robust, certain behavioural rules are proposed taking inspiration from a community of bacterial strains. These preserve each agent’s certain degree of autonomy and identifies a highly coordinated architecture for them.

Mobile Wireless Communications …, Jan 1, 2007

scirp.org

In-Motes is a mobile agent middleware that generates an intelligent framework for deploying appli... more In-Motes is a mobile agent middleware that generates an intelligent framework for deploying applications in Wireless Sensor Networks (WSNs). In-Motes is based on the injection of mobile agents into the network that can migrate or clone following specific rules and performing application specific tasks. By doing so, each mote is given a certain degree of perception, cognition and control, forming the basis for its intelligence. Our middleware incorporates technologies such as Linda-like tuplespaces and federated system architecture in order to obtain a high degree of collaboration and coordination for the agent society. A set of behavioral rules inspired by a community of bacterial strains is also generated as the means for robustness of the WSN. In this paper, we present In-Motes and provide a detailed evaluation of its implementation for MICA2 motes.

scirp.org

Wireless sensor networks have been identified as one of the key technologies for the 21st century... more Wireless sensor networks have been identified as one of the key technologies for the 21st century. They consist of tiny devices with limited processing and power capabilities, called motes that can be deployed in large numbers over a physical environment providing the end user with a number of useful sensing capabilities. Even though, they are flexible and easy to deploy, there are a number of considerations when it comes to their fault tolerance, conserving energy and re-programmability that need to be addressed before we draw any substantial conclusions about the effectiveness of this technology. In order to overcome their limitations, we propose a middleware solution. A fault tolerant platform for deploying and monitoring applications in real time offers a number of possibilities for the end user giving him in parallel the freedom to experiment with various parameters, in an effort the deployed applications to run in an energy efficient manner inside the network. The proposed scheme is evaluated through the In-Motes EYE application aiming to test its merits under real time conditions. In-Motes EYE application which is an agent based real time In-Motes application developed for sensing acceleration variations in an environment. The application was tested in a prototype area, road alike, for a period of four months.