Search results for "control system"

showing 10 items of 971 documents

Scritti in onore di Pellegrino Capaldo

2014

La qualità dei servizi è stata riconosciuta come un rilevante aspetto caratterizzante la performance dell’azienda pubblica, analogamente alla capacità di operare secondo criteri di efficienza e nel rispetto dei vincoli di bilancio. Sebbene sia possibile riscontrare alcuni significativi casi di adozione di politiche di customer satisfaction nelle amministrazioni pubbliche italiane, a tutt’oggi il tema presenta significative criticità, specialmente in ordine agli aspetti metodologici e agli strumenti operativi che consentano di integrare dette politiche nel sistema di programmazione e controllo delle aziende che erogano tali servizi. Il presente lavoro adotta una diversa prospettiva di analis…

Settore SECS-P/07 - Economia AziendaleQuality in delivering public services has been recognised as a major issue challenging performance in the public sector as well as the ability to operate effectively and within budget constraints. Empirical findings shown by the literature demonstrate that concrete efforts have been produced towards the evaluation and improvement of satisfaction levels of citizens and other Public Administration’s ‘customers’. However still today this issue portrays many unresolved criticalities particularly concerning the methodological approaches and operative tools to adopt in order to integrate ‘customer satisfaction’ programs with the wider organisational control system in each public administration. This paper adopts a non-conventional view of the ‘customer satisfaction’ concept. This is currently meant as a matter of social reporting or even statistical analysis based on the users’ perceptions on the level of provided services by a given (front office) unit in the public sector. Here an inter-institutional perspective is adopted with a view to map the overall value chain leading to the final product delivered to citizens or the community. Inside this chain tracking the underlying administrative products delivered by back-office units to their ‘internal clients’ in the public administration is recommended as a fundamental step to understand how to improve performance in satisfying citizens’ needs. This should also require a proper link between the administrative units’ goals and performance measures to the desired efficiency and effectiveness of processes leading to the attainment of administrative products providing the basis of the final services delivered to the private sector. Based on first empirical findings from field analysis in the Italian context the paper aims to outline an approach which could assist both politicians and managers to better assess and improve performance according to a customer satisfaction perspective.
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Il controllo di gestione nell’economia delle banche: aspetti definitori e considerazioni sulle prospettive interpretative proposte dalla letteratura …

2016

Il presente lavoro intende prendere in esame la nozione di controllo di gestione nell’economia delle aziende di credito, a partire dei principali contributi delle dottrine economico-aziendali e manageriali. In Economia aziendale, il controllo è inteso come guida, governo, conduzione aziendale secondo linee prestabilite e con l’impiego di determinati supporti. In prospettiva sistemica, i meccanismi operativi che supportano il raggiungimento degli obiettivi economico-finanziari-patrimoniali ricoprono un ruolo di rilievo nell’economia e gestione delle banche; fra questi, i “sistemi di controllo di gestione”, assumono fondamentale importanza per il funzionamento efficace ed efficiente dell’orga…

Settore SECS-P/11 - Economia Degli Intermediari Finanziaribanking internal control control systems bank management finance.banca controllo interno sistemi di controllo gestione bancaria finanza.
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Evaluation of Daylight Availability for Energy Savings.

2015

Dynamic daylight simulations are very useful instruments in daylighting design process. They allow an in depth analysis of indoor daylight availability levels and define if they are adequate to perform a particular visual task. Their results can be used to design shading devices or lighting control systems and compare different technical solutions. The use of these simulations is likely to spread in the common design practice since some regulations and green building rating systems suggest their use. This paper presents dynamic daylight simulation results related to an open-plan office, performed with Autodesk 3ds Max Design ® , which is a calculation software validated by recent researches…

ShadingsEngineeringArchitectural engineeringlcsh:TH2025-3000Renewable Energy Sustainability and the Environmentbusiness.industryProcess (engineering)Context (language use)Field (computer science)SoftwareShadingControl systemSystems engineeringProduction (economics)Daylightlcsh:Details in building design and construction. Including walls roofsbusinessDaylightingDaylightingSimulationEnergy (miscellaneous)Controls
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Causal inference in geosciences with kernel sensitivity maps

2020

Establishing causal relations between random variables from observational data is perhaps the most important challenge in today's Science. In remote sensing and geosciences this is of special relevance to better understand the Earth's system and the complex and elusive interactions between processes. In this paper we explore a framework to derive cause-effect relations from pairs of variables via regression and dependence estimation. We propose to focus on the sensitivity (curvature) of the dependence estimator to account for the asymmetry of the forward and inverse densities of approximation residuals. Results in a large collection of 28 geoscience causal inference problems demonstrate the…

Signal Processing (eess.SP)FOS: Computer and information sciencesComputer Science - Machine Learning010504 meteorology & atmospheric sciences0211 other engineering and technologiesInverseEstimator02 engineering and technologycomputer.software_genre01 natural sciencesMachine Learning (cs.LG)Methodology (stat.ME)Kernel (statistics)Causal inferenceFOS: Electrical engineering electronic engineering information engineeringRelevance (information retrieval)Data miningSensitivity (control systems)Electrical Engineering and Systems Science - Signal ProcessingFocus (optics)computerRandom variableStatistics - Methodology021101 geological & geomatics engineering0105 earth and related environmental sciences
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Signal integrity studies at optical multiplexer board for TileCal system

2007

6 pages.-- ISI Article Identifier: 000253651800006

Signal delayOptical fiberComputer sciencebusiness.industryElectrical engineeringHardware and accelerator control systemsMultiplexerlaw.inventionData acquisitionElectric power transmissionCoupling (computer programming)lawDistortionSignal integritybusinessInstrumentationInstrumentation for particle accelerators and storage rings - high energy (linear accelerators synchrotrons)Mathematical PhysicsComputer hardware
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PPG/ECG Multisite Combo System Based on SiPM Technology

2019

Two versions of a PPG/ECG combined system have been realized and tested. In a first version a multisite system has been equipped by integrating 3 PPG optodes and 3 ECG leads, whereas in another setup a portable version has been carried out. Both versions have been realized by equipping the optical probes with SiPM detectors. SiPM technology is expected to bring relevant advantages in PPG systems and overcome the limitations of physiological information extracted by state of the art PPG, such as poor sensitivity of detectors used for backscattered light detection and motion artifacts seriously affecting the measurements repeatability and pulse waveform stability. This contribution presents t…

Signal processingComputer scienceSiPM020209 energyPipeline (computing)Detector02 engineering and technologyPPG SiPMs Pattern recognitionSettore ING-INF/01 - ElettronicaSilicon photomultiplierPattern recognitionvisual_artSettore ING-INF/06 - Bioingegneria Elettronica E InformaticaElectronic componentPattern recognition (psychology)0202 electrical engineering electronic engineering information engineeringvisual_art.visual_art_mediumElectronic engineeringWaveformPPGSensitivity (control systems)
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Electrocardiogram Signal Analysing - Delineation and Localization of ECG Component

2016

In this paper, we develop a new approach based on nonlinear filtering scheme (NLFS) on cardiac signal to evaluate a robust single-lead electrocardiogram (ECG) delineation system and waves localization method based on nonlinear filtering approach. This system is built in two phases, in the first phase, we proposed a mathematical model for detecting ECG features like QRS complex peak, P and T-waves onsets and ends from noise free of synthetic ECG signal. Later, we develop a theoretical model to obtain real approach for detecting these features from real noisy ECG signals. Our method has been evaluated on electrocardiogram signals of QT-MIT standard database, the QRS peak achieve sensitivity (…

Signal processingNoise (signal processing)Computer sciencebusiness.industryPhase (waves)Pattern recognitionSignalStandard deviationQRS complexComputer visionSensitivity (control systems)Artificial intelligenceEcg signalbusinessProceedings of the 9th International Joint Conference on Biomedical Engineering Systems and Technologies
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Observer-based finite-time fuzzy H∞ control for discrete-time systems with stochastic jumps and time-delays

2014

This paper is concerned with the problem of observer-based finite-time H ∞ control for a family of discrete-time Markovian jump nonlinear systems with time-delays represented by Takagi-Sugeno (T-S) model. The main contribution of this paper is to design an observer-based finite-time H ∞ controller such that the resulting closed-loop system is stochastic finite-time bounded and satisfies a prescribed H ∞ disturbance attenuation level over the given finite-time interval. Sufficient criteria on stochastic finite-time H ∞ stabilization via observer-based fuzzy state feedback are presented for the solvability of the problem, which can be tackled by a feasibility problem in terms of linear matrix…

Signal processingObserver (quantum physics)Finite-time H∞ controlTakagi-Sugeno (T-S) modelMarkovian jump systemsFuzzy control systemFuzzy logicFinite-time H∞ control; Markovian jump systems; Observer-based control; Takagi-Sugeno (T-S) model; Electrical and Electronic Engineering; Control and Systems Engineering; Software; Signal Processing; 1707Nonlinear systemobserver-based controlTakagi–Sugeno (T–S) modelDiscrete time and continuous timeControl and Systems EngineeringControl theoryBounded functionSignal ProcessingComputer Vision and Pattern RecognitionState observerElectrical and Electronic Engineeringfinite-time H∞ controlfinite-time H infinity controlObserver-based controlSoftware1707Mathematics
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Design and Validation of a FPGA-Based HIL Simulator for Minimum Losses Control of a PMSM

2021

This work examines the FPGA programmable logic platforms applied to minimum losses control of a Permanent Magnet Synchronous Motor (PMSM), which represents a flexible solution for the implementation of an advanced digital control algorithm, given their intrinsic parallel structure and the capability to be directly reprogrammable in the field. In particular, design and validation of a FPGA-based Hardware-In-the-Loop (HIL) simulator is proposed, by investigating about data format, quantization and discretization effects and other issues arising during the experimental validation of a controller prototype, in order to reduce the embedded software development cycle and test control systems. The…

SimulationsComputer scienceHardware-in-the-loop simulationSettore ING-INF/01 - ElettronicaElectrical drivesProgrammable logic deviceComputer Science::Hardware ArchitectureEmbedded softwareSettore ING-INF/04 - AutomaticaControl theoryControl systemHardware-in-the-loopPMSMDigital controlField-programmable gate arrayQuantization (image processing)SimulationFPGA
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Fuzzy filter design for discrete-time delayed systems with distributed probabilistic sensor faults

2013

In this paper, the problem of distributed fuzzy filter design has been solved for T-S fuzzy systems with time-varying delays and multiple probabilistic packet losses. Our attention is paid to designing the distributed fuzzy filters to guarantee the filtering error dynamic system to be mean-square asymptotically stable with an average ℋ∞ performance. Sufficient conditions for the obtained filtering error dynamic system are proposed by applying a comparison model and the scaled small gain theorem. Based on the measurements and estimates of the system states for each sensor and its neighbors, the solution of the parameters of the distributed fuzzy filters is characterized in terms of the feasi…

Small-gain theoremDiscrete time and continuous timeExponential stabilityControl theoryConvex optimizationProbabilistic logicFuzzy numberFuzzy control systemFuzzy logicMathematics2013 American Control Conference
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