The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
The advances in the wearable devices and Artificial Intelligence domains highlight the need for ICT systems that aim in the improvement of human's quality of life. In this paper we present the sleeping tracking component of an activity and sleeping tracking system. We present the sleep quality assessment based on EEG processing and support vector machines with sequential minimal optimization classifiers...
During the last years Home Monitoring has emerged as a prominent research and development area able to offer significant services to a wide variety of application scenarios. Without a doubt, factors of critical importance that propelled respective interest include advancements in ICT areas such as wireless sensor networks (WSNs), hardware design and adequate sensors' circuitry implementation. However,...
Although Wireless Sensor Networks (WSNs) comprise one of the most rapidly evolving networking areas, in order to achieve significant widespread use, it is essential to provide tools enabling WSN users (especially the non-expert ones) to design, develop and deploy efficient WSNs with respect to specific requirements. Despite the importance of such objectives a significant lack is identified in the...
It is increasingly regarded that data local caching in WSN can benefit the resource conservation and performance. A critical challenge is that cached data comprise only a small percentage of the data that a WSN node may require, thus leading to the replacement of data items. Consequently, replacement policy comprises critical factors in order to maximize performance benefits. Equally important in...
It is becoming increasingly apparent that approaches and methodologies traditionally used in on-chip and off-chip cache memories can offer significant benefits to a wide range of wireless network scenarios. A prominent relative area is Wireless Sensor Networks characterized by a wide range of advantages but, at the same time, extremely limited and scarce resources. However, most of the relative efforts...
In this article a dual scheme for secured Multimedia Wireless Sensor Networks (MWSN) is being presented. The dual scheme is based on: a) the Quad Tree Decomposition algorithm that it is able to compress the images before transmission, while providing significant robustness in retaining the image quality, against packet losses, and b) the Secure and Scalable Rekeying Protocol (S2RP), which encrypts...
A modular architecture for power constrained embedded devices which leverages an agent based middleware in order to impose intelligence over critical infrastructures which require real time actions is always desirable in the case of Wireless Sensor Networks. The main objective of such architecture is the integration of a Wireless Sensor Network with the internet. This objective indicates the need...
Aim of this research is to propose an accurate model of measuring business excellence by applying the theory of System Dynamics. This theory defines the interaction of system variables giving the opportunity of a reliable and fair score as well as objective decision-making with regard to the areas that are susceptible of continuous improvement. This paper utilises the principles of the System Dynamics...
In recent years, several network services regarding multimedia, sensor, control and many other applications are becoming more and more popular. It is envisaged that every mobile electronic device will have a wireless network interface that allows it to join in general, heterogeneous networks and exchange information among its devices. From the user perspective, these devices must work transparently...
This paper describes a wearable health monitoring system integrated into a broad telemedical infrastructure allowing high - risk cardiovascular patients to closely monitor changes in their critical vital signs and get experts feedback to help maintain optimal health status. Consistent with the major challenge to provide good quality and reliable health care services to an increasing number of people...
The introduction of semantics via ontologies in the industrial environment combined with autonomous agents for the decentralization of production processes has drawn a lot of attention. The common denominator in all proposals attempting to combine semantics and intelligent agent was the semantic gap between them which, at best, was attempted to be bridged with an auxiliary ontology. In this paper...
Tourism presents quite an important industry that needs to evolve so that it confronts with the changes occurring on a global scale. In order for this to be possible a different approach should be followed regarding the provision of an integrated tourist product combining all the different characteristics of a tourist destination. Clustering of both tourist enterprises and other local enterprises...
Ad hoc wireless networks are power constrained since nodes operate with limited battery energy. Thus, energy consumption is crucial in the design of new ad hoc routing protocols. To design such protocols, we have to look away from the traditional minimum hop routing schemes. This paper presents an energy-aware routing mechanism to balance the energy consumption among the nodes of the network. The...
As networks become more and more complicated and applications more and more demanding, a very common network topology for state-of-the-art multimedia applications supporting emerging user - centric frameworks is a heterogeneous wired/wireless architecture. A network architecture solution for Indoor/Outdoor heterogeneous networking applications, to support both multimedia and sensor applications suitable...
The manufacturing environment is characterized by a high degree of heterogeneity. The seamless integration of MES and Shop-Floor layers poses a significant challenge. Industrial manufacturing ontologies provide the necessary semantics for such and integration. A gap nevertheless exists between the industrial ontology semantics and the behaviour and activity model utilized by a multi-agent system that...
IEEE 802.15.4 LR-WPAN is intended as a specification for low-cost, low-powered networks with no critical concerns about throughput and latency. These features enable applications in the fields of industrial, agricultural, vehicular, residential and medical sensors as well as actuators, such as wireless monitoring and control of lights, security alarms, motion sensors, thermostats and smoke detectors,...
Collaborative B2B e-commerce provides enterprises with the necessary level of flexibility and efficiency to retain competitiveness under the increasingly turbulent business environment. Widely accepted XML-based frameworks like RosettaNet may be utilized to provide generic inter-enterprise B2B infrastructure. This paper presents an innovative approach towards utilizing RosettaNet in combination with...
This paper describes the ERMIS system, specially designed to support the fleet and personnel scheduling and management issues, as well as to support various business collaboration issues for a helicopter taxi company. The implemented system offers a Web-based interface for the flying and stationary personnel and a software application running on a PDA with GSM and GPS capabilities for the pilots....
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.