Search results for " Node"

showing 10 items of 602 documents

Sine cura. Verso il ri-ciclo dell'architettura del secondo Novecento

2019

Gli argomenti discussi nel saggio interrogano il destino che il Codice dei Beni Culturali (2004- 2011) determina per le opere del secondo Novecento. Nella costruzione del futuro di questi manufatti, che per funzione, tecnologia e cicli d’uso sono spesso segnati dall’obsolescenza e dall’abbandono, le ambiguità e le incongruenze delle attuali procedure legislative sollecitano profondamente il ruolo culturale delle esperienze di ricerca che usano metodologie meta progettuali. Il confronto fra alcuni casi italiani ed altri europei rimarca il ruolo del progetto nella costruzione di una prospettiva di tutela trasformativa per il costruito del secondo Novecento. Nel quadro di azione marcato dall’o…

Settore ICAR/14 - Composizione Architettonica E UrbanaThe essay questions the future's possibilities to operate on the buildings of the second half of the twentieth century according to the Italian Code of Cultural Heritage (2004-2011). When arguing how to encourage the re-use of these artifacts which are often marked by short-life technology cycles obsolescence and abandonment the ambiguities and inconsistencies of current legislative procedures deeply stress the cultural role of research experiences that use project-oriented methodologies. The comparison between some Italian and other European cases highlights the role of a design approach in the construction of a transformative protection perspective for the built matter of the second half of the twentieth century. In a framework aiming to encourage a reconciliation between the recent built environment and the new paradigms of sustainability and circular economy architecture must recognize re-cycle practices as a main theoretical and procedural node. To modernize the late Modern built environment with contemporary construction components is not simply a matter of technical knowledge and expertise: but a theme with theoretical density aesthetic and ethical values. The architectural project in this field today must ask for greater congruence between the bureaucratic and administrative levels and the real consistency of this corpus. It is a matter of identifying strategies to equip it with capabilities meanings and contents remembering that demolition wastes have unsustainable environmental costs and uncertain results concerning the necessary new attribution of political and semantic meaning that these places await.
researchProduct

A Multi-Port Approach to Solve Distribution Networks with Meshes and PV Nodes

2007

A new methodology based on the backward/forward (b/f) technique for the load flow solution in distribution systems is here proposed. The methodology takes efficiently into account the fixed voltage nodes and uses a reduced bus impedance matrix. In this way, it is possible to attain, for the unknowns at the PV nodes, the same values that are attainable solving the network with the methods adopted for transmission systems. With the same methodology it is possible to take into account also the meshes. If the network contains only meshes, the relevant model is linear and it is the one including the compensation currents. The presence of PV nodes introduces non linearity in the model and an iter…

Settore ING-IND/33 - Sistemi Elettrici Per L'EnergiaMathematical optimizationRobustness (computer science)Computer scienceIterative methodConvergence (routing)LinearityPolygon meshBackward/forward method load flow distribution networks PV nodes.Power-flow studyTransmission systemVoltage2007 IEEE Lausanne Power Tech
researchProduct

Method of changing the operation of wireless network nodes

2013

Settore ING-INF/03 - Telecomunicazioniwireless network node MAC protocol finite state machine
researchProduct

Design of an Adaptive Bayesian System for Sensor Data Fusion

2014

Many artificial intelligent systems exploit a wide set of sensor devices to monitor the environment. When the sensors employed are low-cost, off-the-shelf devices, such as Wireless Sensor Networks (WSN), the data gathered through the sensory infrastructure may be affected by noise, and thus only partially correlated to the phenomenon of interest. One way of overcoming these limitations might be to adopt a high-level method to perform multi-sensor data fusion. Bayesian Networks (BNs) represent a suitable tool for performing refined artificial reasoning on heterogeneous sensory data, and for dealing with the intrinsic uncertainty of such data. However, the configuration of the sensory infrast…

Settore ING-INF/05 - Sistemi Di Elaborazione Delle InformazioniAmbient IntelligencePervasive SystemsComputer scienceDistributed computingSensor nodeBayesian probabilityBayesian networkInferenceNoise (video)Sensor fusionWireless sensor network
researchProduct

Short-Term Sensory Data Prediction in Ambient Intelligence Scenarios

2014

Predicting data is a crucial ability for resource-constrained devices like the nodes of a Wireless Sensor Network. In the context of Ambient Intelligence scenarios, in particular, short-term sensory data prediction becomes a key enabler for more difficult tasks such as prolonging network lifetime, reducing the amount of communication required and improving user-environment interaction. In this chapter we propose a software module designed for clustered wireless sensor networks, able to predict various environmental quantities, namely temperature, humidity and light. The software module is supported by an ontology that describes the topology of the AmI scenario and the effects of the actuato…

Settore ING-INF/05 - Sistemi Di Elaborazione Delle InformazioniAmbient intelligenceAmbient Intelligencebusiness.industryComputer scienceReal-time computingHumidityTopology (electrical circuits)Context (language use)Ontology (information science)Machine learningcomputer.software_genreTerm (time)Sensor nodeKey (cryptography)Artificial intelligencebusinessWireless sensor networkcomputer
researchProduct

Detection of User Activities in Intelligent Environments

2014

Research on Ambient Intelligence (AmI) focuses on the development of smart environments adaptable to the needs and preferences of their inhabitants. For this reason it is important to understand and model user preferences. In this chapter we describe a system to detect user behavior patterns in an intelligent workplace. The system is designed for a workplace equipped in the context of Sensor9k, a project carried out at the Department of Computer Science at the University of Palermo (Italy). © Springer International Publishing Switzerland 2014.

Settore ING-INF/05 - Sistemi Di Elaborazione Delle InformazioniAmbient intelligenceComputer scienceHuman–computer interactionArtificial IntelligenceSensor nodeContext (language use)Smart environmentWireless sensor network
researchProduct

Extracting Structured Knowledge From Sensor Data for Hybrid Simulation

2014

Obtaining continuous and detailed monitoring of indoor environments has today become viable, also thanks to the widespread availability of effective and flexible sensing technology; this paves the way for the design of practical Ambient Intelligence systems, and for their actual deployment in real-life contexts, which require advanced functionalities, such as for instance the automatic discovery of the activities carried on by users. Novel issues arise in this context; on one hand, it is important to reliably model the phenomena under observation even though, to this end, it is often necessary to craft a carefully designed prototype in order to test and fine-tune the theoretical models.

Settore ING-INF/05 - Sistemi Di Elaborazione Delle InformazioniAmbient intelligenceComputer scienceTheoretical modelsinternet of things wireless sensor networks grammar inductionContext (language use)computer.file_formatData scienceSoftware deploymentHuman–computer interactionSensor nodeRDFWireless sensor networkcomputer
researchProduct

BioAnalysis: A Framework for Structural and Functional Robustness Analysis of Metabolic Networks

2010

The main objective of this work is to analyze metabolic networks evolution in terms of their robustness and fault tolerance capabilities. In metabolic networks, errors can be seen as random removal of network nodes, while attacks are high-connectivity-degree node deletion aimed at compromising network activity. This paper proposes a software framework, namely BioAnalysis, used to test the robustness and the fault tolerance capabilities of real metabolic networks, when mutations and node deletions affect the network structure. The performed simulations are related to the central metabolic network of the well-known E. coli single-celled bacterium and involve either hub nodes or non-hub nodes,…

Settore ING-INF/05 - Sistemi Di Elaborazione Delle InformazioniBioanalysisbusiness.industryComputer scienceDistributed computingNode (networking)Metabolic networkFault tolerancecomputer.software_genreMetabolic networks hub and non-hub nodes network robustness E. coli properties analysisNetwork operations centerSoftware frameworkSoftwareRobustness (computer science)businesscomputer2010 International Conference on Complex, Intelligent and Software Intensive Systems
researchProduct

Understanding the Environment through Wireless Sensor Networks

2007

This paper presents a new cognitive architecture for extracting meaningful, high-level information from the environment, starting from the raw data collected by a Wireless Sensor Network. The proposed framework is capable of building rich internal representation of the sensed environment by means of intelligent data processing and correlation. Furthermore, our approach aims at integrating the connectionist, data-driven model with the symbolic one, that uses a high-level knowledge about the domain to drive the environment interpretation. To this aim, the framework exploits the notion of conceptual spaces, adopting a conceptual layer between the subsymbolic one, that processes sensory data, a…

Settore ING-INF/05 - Sistemi Di Elaborazione Delle InformazioniData processingComputer scienceVisual sensor networkCognitive architecturecomputer.software_genreCognitive architecturesConnectionismHuman–computer interactionSensor nodeKey (cryptography)Data miningLayer (object-oriented design)Wireless sensor networkcomputerWireless Sensor Network
researchProduct

DC4CD

2017

In this article, we present Distributed Computing for Constrained Devices (DC4CD), a novel software architecture that supports symbolic distributed computing on wireless sensor networks. DC4CD integrates the functionalities of a high-level symbolic interpreter, a compiler, and an operating system, and includes networking abstractions to exchange high-level symbolic code among peer devices. Contrarily to other architectures proposed in the literature, DC4CD allows for changes at runtime, even on deployed nodes of both application and system code. Experimental results show that DC4CD is more efficient in terms of memory usage than existing architectures, with which it also compares well in te…

Settore ING-INF/05 - Sistemi Di Elaborazione Delle InformazioniDistributed symbolic processing Forth high-level event handling inter- pretation and compilation of symbolic code on resource-constrained devices wireless programming of sensor network nodesSystem codeComputer scienceDistributed computing020208 electrical & electronic engineering020206 networking & telecommunications02 engineering and technologySymbolic codecomputer.software_genreHardware and Architecture0202 electrical engineering electronic engineering information engineeringCompilerSoftware architectureWireless sensor networkcomputerSoftwareInterpreterACM Transactions on Embedded Computing Systems
researchProduct