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University of Perugia, Italy

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12 Papers

From Arguments and Reviewers to their Simulation - Reproducing a Case-Study

Topics: Multi-Agent Systems; Knowledge Representation and Reasoning; Simulation

Authors: Simone Gabbriellini ¹ and Francesco Santini ²

Affiliations: ¹ Università di Brescia, Italy , ² Università di Perugia, Italy

Digital Object Identifier: 10.5220/0005816200740083

Proceedings of ICAART 2016, ISBN: 978-989-758-172-4

Quick Abstract

We propose an exploratory study on arguments in Amazon.com reviews. Firstly, we extract positive (in favour of purchase) and negative (against it) arguments from each review concerning a selected product. We accomplish this information extraction manually, scanning all the related reviews. Secondly, we link extracted arguments to the rating score, to the length, and to the date of reviews, in order to undertand how they are connected. As a result, we show that negative arguments are quite sparse in the beginning of such social review-process, while positive arguments are more equally distributed along the timeline. As a final step, we replicate the behaviour of reviewers as agents, by simulating how they assemble reviews in the form of arguments. In such a way, we show we are able to mirror the measured experiment through a simulation that takes into account both positive and negative arguments.

Related Ontology Subjects/Areas/Topics (17)

Agents	Enterprise Information Systems	Multi-Agent Systems
Artificial Intelligence	Information Systems Analysis and Specification	Operational Research
Artificial Intelligence and Decision Support Systems	Knowledge Engineering and Ontology Development	Simulation
Bioinformatics	Knowledge Representation and Reasoning	Software Engineering
Biomedical Engineering	Knowledge-Based Systems	Symbolic Systems
Distributed and Mobile Software Systems	Methodologies and Technologies

Households and Sustainable Green Technologies: A Review

Topics: Economic Models of Energy Efficiency; Renewable Energy Resources

Authors: Simona Bigerna ¹ , Carlo Andrea Bollino ¹ , Silvia Micheli ² and Paolo Polinori ¹

Affiliations: ¹ University of Perugia, Italy , ² Guglielmo Marconi University, Italy

Digital Object Identifier: 10.5220/0005907403780383

Proceedings of SMARTGREENS 2016, ISBN: 978-989-758-184-7

Quick Abstract

There is widespread consensus in the climate research community that households show different attitudes toward the broad spectrum of technologies and policy instruments implemented to reduce CO2 emissions. The aim of this paper is to investigate the monetary aspect of socio-economic acceptability of four sustainable green technologies development: green electricity, energy savings in residential buildings, smart meters and alternative fuel vehicles. We obtained information on willingness to pay, and/or willingness to accept, for such technologies from a sample of 35 papers taken from the literature. We homogenize this information computing an implicit price of a Kg of CO2 avoided, named PCO2. A qualitative analysis is carried out to explain the households’ attitude to avoid CO2 in monetary terms. Results show that on average PCO2 is positive. There are, however, some negative attitudes only in the case of alternative fuel vehicles. In conclusion, empirical results show that households have a favorable attitude toward sustainable green technologies, but further research is desirable to design new policies to make the future of the sustainable society more plausible.

Related Ontology Subjects/Areas/Topics (4)

Economic Models of Energy Efficiency		Energy-Aware Systems and Technologies		Renewable Energy Resources
Energy and Economy

Overview of Socio-Economic Issues for Smart Grids Development

Topics: Architectures for Smart Grids; Renewable Energy Resources

Authors: Simona Bigerna ¹ , Carlo Andrea Bollino ¹ and Silvia Micheli ²

Affiliations: ¹ University of Perugia, Italy , ² Guglielmo Marconi University, Italy

Digital Object Identifier: 10.5220/0005477402710276

Proceedings of SMARTGREENS 2015, ISBN: 978-989-758-105-2

Quick Abstract

The electrical world system is experiencing many challenges, including the increasing presence of renewable energy sources characterized by high variability, the call for actions to mitigate climate change, the need to restructure the infrastructure already aged and then the development of smart grids. Smart grid projects have been launched in various countries around the world. The transition to the smart grid is affecting primarily the European Union and the United States, but also emerging markets such as China and India are strongly investing in the smart grids. In this paper we analyze the socio-economic aspects that are among the key variables towards the feasibility of smart grid projects. Construction of new infrastructures generally rises acceptance problems. Social acceptance of consumers is important for the adoption of new technologies. We advocate that multidisciplinary cooperation is needed to develop scientific research on smart grids.

Related Ontology Subjects/Areas/Topics (5)

Architectures for Smart Grids		Energy-Aware Systems and Technologies		Smart Grids
Energy and Economy		Renewable Energy Resources

An Improved Simulator of AC45 Foiling Catamarans for Crew Training

Topic: Simulation and Mathematical Modeling

Authors: Filippo Rocchini and Paolo Conti

Affiliation: University of Perugia, Italy

Digital Object Identifier: 10.5220/0005142401770182

Proceedings of icSPORTS 2014, ISBN: 978-989-758-057-4

Quick Abstract

To-day America's Cup catamarans have many innovative features such as hydrodynamic foils and rigid wings instead of soft sails. They are designed not only to float but also to heave and "fly" over the sea surface. These new features require new skills that the crew must acquire. The work presented in the paper deals with this problem and describes a foiling catamaran simulator designed for training purpose. The simulator is designed primarily to interact with the in-training team and to feedback the crewmen with realistic physical reactions in an immersive scenario; secondly the simulator gives the opportunity to compare different race strategies and to select the most promising one. The main features of the simulator are illustrated, some graphical evaluations are displayed and results are discussed.

Related Ontology Subjects/Areas/Topics (3)

Computer Systems in Sports

Simulation and Mathematical Modeling

Sport Science Research and Technology

Flocking Approach to Spatial Configuration Control in Underwater Swarms

Topics: Distributed Control Systems; Autonomous Agents; Mobile Robots and Autonomous Systems; Engineering Applications

Authors: Stefano Chiesa ¹ , Sergio Taraglio ² , Stefano Pagnottelli ³ and Paolo Valigi ³

Affiliations: ¹ University of Roma Tre and ENEA, Italy , ² ENEA, Italy , ³ University of Perugia, Italy

Digital Object Identifier: 10.5220/0004036903130316

Proceedings of ICINCO 2012, ISBN: 978-989-8565-21-1

Quick Abstract

A modification of the flocking algorithm approach for a swarm of underwater vehicles is introduced. The proposed approach relaxes the symmetry of the inter vehicle interaction. It is thus possible to change the swarm spatial configuration assuming different formations with varying parameters. The swarm geometry is changed with a very limited effort, exploiting the capability of the flocking approach to make emerge a large scale arrangement. Examples of proposed variations are provided. The vehicles are dynamically modelled and the relative non holonomic proportional derivative controller is described. Experimental data are gathered from many vehicle physical simulations and graphically presented.

Related Ontology Subjects/Areas/Topics (8)

Autonomous Agents	Informatics in Control, Automation and Robotics	Robotics and Automation
Distributed Control Systems	Intelligent Control Systems and Optimization	Signal Processing, Sensors, Systems Modeling and Control
Engineering Applications	Mobile Robots and Autonomous Systems

UHEED - An Unequal Clustering Algorithm for Wireless Sensor Networks

Topic: Energy Efficiency

Authors: E. Ever ¹ , R. Luchmun ¹ , L. Mostarda ¹ , A. Navarra ² and P. Shah ¹

Affiliations: ¹ Middlesex University, United Kingdom , ² University of Perugia, Italy

Digital Object Identifier: 10.5220/0003804001850193

Proceedings of SENSORNETS 2012, ISBN: 978-989-8565-01-3

Quick Abstract

Prolonging the lifetime of wireless sensor networks has always been a determining factor when designing and deploying such networks. Clustering is one technique that can be used to extend the lifetime of sensor networks by grouping sensors together. However, there exists the hot spot problem which causes an unbalanced energy consumption in equally formed clusters. In this paper, we propose UHEED, an unequal clustering algorithm which mitigates this problem and which leads to a more uniform residual energy in the network and improves the network lifetime. Furthermore, from the simulation results presented, we were able to deduce the most appropriate unequal cluster size to be used.

Related Ontology Subjects/Areas/Topics (6)

Energy Efficiency		Industrial Engineering		Obstacles
Energy Efficiency and Green Manufacturing		Informatics in Control, Automation and Robotics		Sensor Networks

VIS4AUI: VISUAL ANALYSIS OF BANKING ACTIVITY NETWORKS

Topics: Visual Data Analysis and Knowledge Discovery; Visual Representation and Interaction; Databases and Visualization, Visual Data Mining; Graph Visualization; Interface and Interaction Techniques for Visualization

Authors: Walter Didimo , Giuseppe Liotta and Fabrizio Montecchiani

Affiliation: Universitá degli Studi di Perugia, Italy

Digital Object Identifier: 10.5220/0003933407990802

Proceedings of IVAPP 2012/VISIGRAPP, ISBN: 978-989-8565-02-0

Quick Abstract

We present the system VIS4AUI, aimed at supporting the analyst to discover financial crimes related to money laundering. An anti-money laundering archive collects financial information with regard to ongoing bank relationships and high value transactions. VIS4AUI is able to import and analyze the Italian anti-money laundering archive (AUI) in order to visualize the banking activity networks arising from it. In the demonstration, the user will be given an evidence of a possible suspicious person or company; starting from such a seed entity, the task will be that of exploring and analyzing her network of transactions through the tools provided by the system. In order to immerse the user in a fully interactive experience, VIS4AUI is a touch-optimized application, only requiring a touchscreen as interface.

Related Ontology Subjects/Areas/Topics (7)

Abstract Data Visualization	Graph Visualization	Visual Data Analysis and Knowledge Discovery
Computer Vision, Visualization and Computer Graphics	Interface and Interaction Techniques for Visualization	Visual Representation and Interaction
Databases and Visualization, Visual Data Mining

MOLECULAR FUZZY INFERENCE ENGINES - Development of Chemical Systems to Process Fuzzy Logic at the Molecular Level

Topics: Soft Computing; Fuzzy Systems

Author: Pier Luigi Gentili

Affiliation: Perugia University, Italy

Digital Object Identifier: 10.5220/0003125102050210

Proceedings of ICAART 2011, ISBN: 978-989-8425-40-9

Quick Abstract

Current Information Technology is pursuing a revolution in the design of computing machines: it is trying to pass from macroscopic processors miniaturized through top-down approaches, to microscopic processors made of single molecules assembled through bottom-up approaches. When computations are carried out by single atoms and molecules, quantum logic can be processed. It is difficult to devise a quantum computer due to the decoherent effects exerted by the surrounding environment. However, it is still possible to work out with molecules, by abandoning the lure of quantum logic and processing classical logic. Single molecules make binary computations, whereas ensembles of molecules can be used to implement either Boolean logic gates or Fuzzy inference engines. The behaviours of two chemical compounds after photo-excitation are described as examples of quantum systems whereby Fuzzy logic can be processed by exploiting the decoherent effects exerted by the surrounding microenvironment.

Related Ontology Subjects/Areas/Topics (8)

Artificial Intelligence	Enterprise Information Systems	Intelligent Control Systems and Optimization
Artificial Intelligence and Decision Support Systems	Fuzzy Systems	Soft Computing
Computational Intelligence	Informatics in Control, Automation and Robotics

INFORMATION VISUALIZATION TECHNIQUES FOR MOTION IMPAIRED PEOPLE

Topics: Human-Machine Interfaces for Disabled Persons; ICT, Ageing and Disability

Authors: Emilio Di Giacomo , Giuseppe Liotta and Stefano Federici

Affiliation: University of Perugia, Italy

Digital Object Identifier: 10.5220/0002758403610366

Proceedings of HEALTHINF 2010/BIOSTEC, ISBN: 978-989-674-016-0

Quick Abstract

Several alternative input techniques have been proposed in order to make computers more accessible to motion impaired people. They include brain computer interaction (BCI), eye movement detection, and speech/sound interaction techniques. Even if these alternative techniques partially compensate the reduced capabilities of the end-users, the overall interaction can become slow and convoluted since the number of commands required to complete a single task can increase significantly, even for the most common computer applications. In this position paper we describe a novel Human-Computer Interaction paradigm for motion impaired people based on sophisticated diagrammatic interfaces. The main idea is to use Information Visualization approaches to overcome the limited interaction capabilities of the alternative input devices typically used by individuals with motor disabilities. Our idea is that the limited information bandwidth of the input devices can be compensated by the broad bandwidth of the adopted diagrammatic interfaces, capable of conveying large amounts of information at once.

Related Ontology Subjects/Areas/Topics (4)

Biomedical Engineering		Human-Machine Interfaces for Disabled Persons		ICT, Ageing and Disability
Health Information Systems

Stability and Performance of Scheduling Policies in a Transportation Node

Authors: Mauro Boccadoro ¹ , Francesco Martinelli ² and Paolo Valigi ¹

Affiliations: ¹ DIEI - Università di Perugia, Italy , ² DISP - Università di Roma tor Vergata, Italy

Digital Object Identifier: 10.5220/0002270300860095

Proceedings of Workshop IVC & ITS 2009/ICINCO, ISBN: 978-989-674-003-0

Quick Abstract

In this paper we consider the dynamic model of a logistic node of a transportation network and study dispatching feedback policies in terms of stability and optimality. A necessary and sufficient condition for the existence of a stable feedback policy is given and a policy is presented which would be optimal if the transportation resources were continuous.

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