Browsing Τμήμα Πληροφορικής / Department of Computer Science by Title

Article

Packet scheduling over a wireless channel: AQT-based constrained jamming

Fernández Anta, Antonio; Georgiou, Chryssis; Zavou, Elli (2015)

In this paper we consider a two-node setting with a sender transmitting packets to a receiver over a wireless channel. Unfortunately, the channel can be jammed, thus corrupting the packet that is being transmitted at the ...

Article

The PaCMAn Metacomputer: Parallel computing with Java mobile agents

Evripidou, Paraskevas; Samaras, George S.; Panayiotou, Christoforos; Pitoura, Evaggelia 1967- (2001)

The PaCMAn (parallel computing with Java mobile agents) Metacomputer launches multiple Java mobile agents that communicate and cooperate to solve problems in parallel. Each mobile agent can travel anywhere in the Web to ...

Article

PADS: An approach to modeling resource demand and supply for the formal analysis of hierarchical scheduling

Philippou, Anna; Lee, I.; Sokolsky, O. (2012)

As real-time embedded systems become more complex, resource partitioning is increasingly used to guarantee real-time performance. Recently, several compositional frameworks of resource partitioning have been proposed using ...

Article

The PAG crowd: A graph based approach for efficient data-driven crowd simulation

Charalambous, Panayiotis; Chrysanthou, Yiorgos L. (2014)

We present a data-driven method for the real-time synthesis of believable steering behaviours for virtual crowds. The proposed method interlinks the input examples into a structure we call the perception-action graph (PAG) ...

Conference Object

PALLAS: A querying interface for pervasive computing using handheld devices

Polyviou, S.; Evripidou, Paraskevas; Samaras, George S. (2004)

In this paper we describe PALLAS (PALm Logic-based Algebraic Search), a prototype architecture, design and implementation for a search interface on a portable digital assistant. PALLAS is part of the UbAgent, a middleware ...

Conference Object

Palm geometry biometrics: A score-based fusion approach

Tsapatsoulis, Nicolas; Pattichis, Constantinos S. (2009)

In this paper we present an identification and authentication system based on hand geometry. First, we examine the performance of three different methods that are based on hand silhouette and on binarized hand images and ...

Conference Object

Panel - Challenges in supporting the design of products for healthcare: The human factors consultant's perspective

Horst, D.; Caplan, Stan; Mauro, C.; Karn, K.; Samaras, George S. (Human Factors an Ergonomics Society Inc., 2015)

This panel will provide a forum for discussing typical challenges that arise for human factors consulting practices when focused on designing products for healthcare, either medical devices, healthcare software, or related ...

Article

Panel – Challenges in Supporting the Design of Products for Healthcare

Horst, Dick; Caplan, Stan; Mauro, Charles; Karn, Keith; Samaras, George S.

Conference Object

Panthera: holistic memory management for big data processing over hybrid memories

Wang, Chenxi; Cui, Huimin; Cao, Ting; Zigman, John; Volos, Haris; Mutlu, Onur; Lv, Fang; Feng, Xiaobing; Xu, Guoqing Harry (Association for Computing Machinery, 2019)

Modern data-parallel systems such as Spark rely increasingly on in-memory computing that can significantly improve the efficiency of iterative algorithms. To process real-world datasets, modern data-parallel systems often ...

Article

Parallel and distributed data management

Sakellariou, R.; Orlando, S.; Larriba-Pey, J. L.; Parthasarathy, S.; Zeinalipour-Yazdi, Constantinos D. (2010)

The manipulation and handling of an ever increasing volume of data by current data-intensive applications requires novel techniques for efficient data management. Despite recent advances in every aspect of data management ...

Conference Object

Parallel computing using Java mobile agents

Panayiotou, Christoforos; Samaras, George S.; Pitoura, Evaggelia 1967-; Evripidou, Paraskevas (1999)

We propose a mobile-agent parallel processing framework that uses multiple Java mobile agents, each one of which utilizes multithreading. A mobile agent can travel at any Web site to perform its tasks. We also introduce ...

Conference Object

A parallel implementation of a multi-objective evolutionary algorithm

Kannas, Christos C.; Nicolaou, Christos A.; Pattichis, Constantinos S. (2009)

Multi-objective Evolutionary Algorithms (MOEAs) have features that can be exploited to harness the processing power offered by modern multi-core CPUs. Modern programming languages offer the ability to use threads and ...

Article

Parallel Implementations of the Selection Problem: A Case Study

Daumas, Marc; Evripidou, Paraskevas (2000)

The selection problem has been studied extensively on sequential machines. A linear average time solution and a linear worst-case solution are considered as the standard by most researchers. Theoretical work is also available ...

Conference Object

A patient centered electronic health system: An example for Cyprus

Neokleous,Kleanthis C.; Schiza, Eirini C.; Pattichis, Constantinos S.; Schizas, Christos N. (IOS Press, 2014)

The design and implementation of a healthcare system needs to follow a specific philosophy regarding its operational structure and must be adapted gradually with one step at a time, depending on the level of maturity of a ...

Article

A patient centered electronic health: EHealth system development

Schiza, Eirini C.; Neokleous,Kleanthis C.; Petkov, N.; Schizas, Christos N. (2015)

Background: Medical practice and patient-doctor relationship will continue improving while technology is integrated in our everyday life. In recent years the term eHealth landmarked a new era with improved health provider's ...

Conference Object

PCP: Privacy-aware Context Profile towards context-aware application development

Kapitsaki, Georgia M.; Venieris, Iakovos St (2008)

Context-awareness constitutes an important aspect in mobile environments, especially when user-centric services are considered. However, user and service related data as part of context information are sensitive and their ...

Article

A peer-to-peer based infrastructure for context distribution in mobile and ubiquitous environments

Hu, X.; Ding, Y.; Paspallis, Nearchos; Papadopoulos, George Angelos; Bratskas, Pyrros; Barone, P.; Mamelli, Alessandro; Vanrompay, Y.; Berbers, Y. (2007)

The increasing proliferation of mobile devices has raised the expectations for user-customized and environment-aware services. However, mobile context-aware systems inherently feature characteristics of distribution and ...

Conference Object

A performance analysis framework for mobile agent systems

Dikaiakos, Marios D.; Samaras, George S. (Springer Verlag, 2001)

In this paper we propose a novel performance analysis ap- proach that can be used to gauge quantitatively the performance char- acteristics of different mobile-agent platforms. We materialize this ap- proach as a hierarchical ...

Conference Object

Performance and stability bounds for dynamic networks

Koukopoulos, D.; Mavronicolas, Marios; Spirakis, Paul G. (2004)

In this work, we study the impact of dynamically changing link capacities on the delay bounds of LIS (Longest-In-System) and SIS (Shortest-In-System) protocols on specific networks (that can be modelled as Directed Acyclic ...

Article

Performance and stability bounds for dynamic networks

Koukopoulos, D.; Mavronicolas, Marios; Spirakis, Paul G. (2007)

In this work, we study the impact of dynamically changing link capacities on the delay bounds of LIS (Longest-In-System) and SIS (Shortest-In-System) protocols on specific networks (that can be modelled as Directed Acyclic ...