Search results for "maintenance"

showing 10 items of 392 documents

a diagnostic and prognostic system to enhance the operational readiness of mission critical systems

2009

Settore ING-IND/17 - Impianti Industriali Meccanicimaintenance reliability
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Maintenance Planning For The Reliability Maximization In A Large System With Vagueness In The Reliability Values Of Some Components

2015

This paper tackles the problem to single out the maintenance actions to be executed on a production system during the planned stop of given length. In detail, from a reliability viewpoint the system is assimilated as a series-parallel multi-component system and the maintenance actions need to maximize the system reliability up to the next planned stop. Moreover, it is assumed that some components reliability values are affected by vagueness within a given range. To solve the considered problem, an exact dynamic programming algorithm suitable to quickly point out the maintenance scheduling is developed and, moreover, it is formulated a proper parameter able to express the robustness of the o…

Settore ING-IND/17 - Impianti Industriali Meccanicivagueness on reliabilitydynamic programming algorithmMaintenance scheduling optimizationSettore ING-IND/16 - Tecnologie E Sistemi Di Lavorazioneseries–parallel system
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Smart Auctions for Autonomic Ambient Intelligence Systems

2020

The main goal of Ambient Intelligence (AmI) is to support users in their daily activities by satisfying and anticipating their needs. To achieve such goal, AmI systems rely on physical infrastructures made of heterogenous sensing devices which interact in order to exchange information and perform monitoring tasks. In such a scenario, a full achievement of AmI vision would also require the capability of the system to autonomously check the status of the infrastructure and supervise its maintenance. To this aim, in this paper, we extend some previous works in order to allow the self-management of AmI devices enabling them to directly interact with maintenance service providers. In particular,…

Settore ING-INF/05 - Sistemi Di Elaborazione Delle InformazioniAmbient intelligenceAmbient IntelligenceComputer sciencebusiness.industryMulti-agent systemSmart Contracts.020206 networking & telecommunications02 engineering and technologyTrusted ComputingService providerTrusted third partyComputer securitycomputer.software_genreMaintenance engineeringHome automation0202 electrical engineering electronic engineering information engineeringCommon value auction020201 artificial intelligence & image processingbusinesscomputer2020 IEEE International Conference on Smart Computing (SMARTCOMP)
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Modeling and Verification of Symbolic Distributed Applications Through an Intelligent Monitoring Agent

2022

Wireless Sensor Networks (WSNs) represent a key component in emerging distributed computing paradigms such as IoT, Ambient Intelligence, and Smart Cities. In these contexts, the difficulty of testing, verifying, and monitoring applications in their intended scenarios ranges from challenging to impractical. Current simulators can only be used to investigate correctness at source code level and with limited accuracy. This paper proposes a system and a methodology to model and verify symbolic distributed applications running on WSNs. The approach allows to complement the distributed application code at a high level of abstraction in order to test and reprogram it, directly, on deployed network…

Settore ING-INF/05 - Sistemi Di Elaborazione Delle InformazioniGeneral Computer ScienceGeneral EngineeringGeneral Materials ScienceElectrical and Electronic EngineeringDistributed applications Distributed processing Embedded Systems Fault detection Fault diagnosis Internet of Things Knowledge based systems Software maintenance Software monitoring Wireless sensor networksIEEE Access
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Understanding short- and long-term implications of “myopic” fleet maintenance policies: a system dynamics application to a city bus company

2010

Financial losses recorded in city bus companies often force managers to implement restructuring strategies aimed at improving business results. However, such decisions may not produce the expected consequences for a number of reasons. Both the internal and external environment in which such companies operate can make the design and implementation of long-term sustainable policies quite difficult. In fact, the result may be that decision makers introduce "effective" policies in a company subsystem, while ignoring the medium- and long-term implications of such decisions in the performance of the whole company. With the aim to detect the main causes underlying "myopic" fleet maintenance polici…

Settore SECS-P/07 - Economia AziendaleRisk analysis (engineering)Operations researchRestructuringManagement of Technology and InnovationStrategy and ManagementEconomicsSystem dynamics modelfleet maintenance policies performance measurement systems performance improvement programs assets management current operating expenses local municipalities business profitabilitySocial Sciences (miscellaneous)Term (time)System dynamicsSystem Dynamics Review
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A Review on Approaches for Condition Based Maintenance in Applications with Induction Machines located Offshore

2012

Published version of an article in the journal: Modeling, Identification and Control. Also available from the publisher at: http://dx.doi.org/10.4173/mic.2012.2.4 Open access This paper presents a review of different approaches for Condition Based Maintenance (CBM) of induction machines and drive trains in offshore applications. The paper contains an overview of common failure modes, monitoring techniques, approaches for diagnostics, and an overview of typical maintenance actions. Although many papers have been written in this area before, this paper puts an emphasis on recent developments and limits the scope to induction machines and drive trains applied in applications located offshore.

Signal processingEngineeringGearboxDrivetrainlcsh:QA75.5-76.95wind turbineInduction machineDiagnosticsPrognosticsbusiness.industryCondition-based maintenanceVDP::Technology: 500Electrical engineeringCondition monitoringComputer Science ApplicationsCondition monitoringIdentification (information)Induction machineControl and Systems EngineeringModeling and SimulationBearingPrognosticslcsh:Electronic computers. Computer scienceSoftware engineeringbusinessSoftwareModeling, Identification and Control
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Epidemiology of intensive care unit-acquired sepsis in Italy: Results of the SPIN-UTI network

2018

Background. Sepsis is the major cause of mortality from any infectious disease worldwide. Sepsis may be the result of a healthcare associated infection (HAI): the most frequent adverse events during care delivery especially in Intensive Care Units (ICUs). The main aim of the present study was to describe the epidemiology of ICU-acquired sepsis and related outcomes among patients enrolled in the framework of the Italian Nosocomial Infections Surveillance in ICUs - SPIN-UTI project. Study design. Prospective multicenter study. Methods. The SPIN-UTI network adopted the European protocols for patient-based HAI surveillance. Results. During the five editions of the SPIN-UTI project, from 2008 to…

Sleep Initiation and Maintenance DisorderMaleTime FactorsHealthcare-associated infections; Mortality; Sepsis; Surveillance; Public Health Environmental and Occupational Health; Infectious DiseasesDiet MediterraneanCoffeeHealth StatuHealthcare-associated infections; Mortality Parole chiave: Infezioni correlate all'assistenza; Mortalità; Sepsi; Sepsis; Sorveglianza; Surveillance; Public Health Environmental and Occupational Health; Infectious DiseasesAcademic PerformancePrevalenceSurveys and QuestionnaireHospital MortalityProspective StudiesCross InfectionSurveillanceIncidenceSmokingTryptophanShockMiddle AgedShock SepticMortalitàIntensive Care UnitsInfectious DiseasesItalyPopulation SurveillanceFemalePublic HealthHumanAdultEmploymentAlcohol DrinkingSepsiIntensive Care UnitHealthcare-associated infectionsRegression AnalysiYoung AdultAge DistributionSepsisLearningHumansHealthcare-associated infectionMortalityExerciseLife StyleSettore MED/42 - IGIENE GENERALE E APPLICATAAgedCross-Sectional StudieHealthcare-associated infections; Mortality; Sepsis; SurveillanceSepticEnvironmental and Occupational HealthBody WeightLength of StayBody HeightProspective StudieSorveglianzaQuality of LifeStudents NursingMortality Parole chiave: Infezioni correlate all'assistenza
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Italian Association of Sleep Medicine (AIMS) position statement and guideline on the treatment of menopausal sleep disorders

2019

Insomnia, vasomotor symptoms (VMS) and depression often co-occur after the menopause, with consequent health problems and reductions in quality of life. The aim of this position statement is to provide evidence-based advice on the management of postmenopausal sleep disorders derived from a systematic review of the literature. The latter yielded results on VMS, insomnia, circadian rhythm disorders, obstructive sleep apnea (OSA) and restless leg syndrome (RLS). Overall, the studies show that menopausal hormone therapy (MHT) improves VMS, insomnia, and mood. Several antidepressants can improve insomnia, either on their own or in association with MHT; these include selective serotonin reuptake …

Sleep Initiation and Maintenance Disordermedicine.medical_treatmentSerotonin and Noradrenaline Reuptake InhibitorPosition statementSleep medicine0302 clinical medicineSleep Initiation and Maintenance DisordersCognitive behavioraltherapy for insomnia (CBT-I)InsomniaSleep Wake Disorder030212 general & internal medicineContinuous positive airway pressureRestless legs syndromeSerotonin and Noradrenaline Reuptake InhibitorsCognitive behavioraltherapy for insomnia (CBT-I); Hormonereplacementtherapy (HRT); Menopause; Position statement; Sleepdisorders; Vasomotorsymptoms (VMS)Sleep Apnea Obstructive030219 obstetrics & reproductive medicineContinuous Positive Airway PressureDepressionObstetrics and GynecologySerotonin Uptake InhibitorAntidepressive AgentsMenopauseCognitive behavioral therapyCognitive behavioral therapy for insomnia (CBT-I)SleepdisordersAntidepressive AgentFemalemedicine.symptomMenopauseSelective Serotonin Reuptake Inhibitorsmedicine.drugHumanSleep Wake Disordersmedicine.medical_specialtyHormone Replacement TherapyVasomotor symptoms (VMS)MirtazapineCognitive behavioral therapy for insomnia (CBT-I); Hormone replacement therapy (HRT); Menopause; Position statement; Sleep disorders; Vasomotor symptoms (VMS); Antidepressive Agents; Cognitive Behavioral Therapy; Continuous Positive Airway Pressure; Depression; Exercise; Female; Humans; Mirtazapine; Quality of Life; Restless Legs Syndrome; Serotonin Uptake Inhibitors; Serotonin and Noradrenaline Reuptake Inhibitors; Sleep; Sleep Apnea Obstructive; Sleep Initiation and Maintenance Disorders; Sleep Wake Disorders; Hormone Replacement Therapy; MenopauseMirtazapineSettore MED/10 - Malattie Dell'Apparato RespiratorioHormone replacement therapy (HRT)Hormonereplacementtherapy (HRT)General Biochemistry Genetics and Molecular Biology03 medical and health sciencesRestless Legs Syndromemental disordersmedicineHumansExerciseSleep disorderCognitive Behavioral Therapybusiness.industryVasomotorsymptoms (VMS)medicine.diseasenervous system diseasesObstructive sleep apneaMenopause sleep disorders vasomotor symptoms (VMS) hormone replacement therapy (HRT) Cognitive Behavioral Therapy for Insomnia (CBT-I) Position StatementPhysical therapyQuality of LifebusinessSleep
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FlowCT for the analysis of large immunophenotypic data sets and biomarker discovery in cancer immunology

2022

Key Points FlowCT is a new computational workspace for unveiling cellular diversity and objectively identifying biomarkers in large immune monitoring studies.FlowCT identified T-cell biomarkers predictive of malignant transformation and survival in SMM and active MM data sets.

Smoldering Multiple MyelomaOncologymedicine.medical_specialtyImmunobiology and ImmunotherapyT cellMyeloma2423ImmunophenotypingImmune systemMaintenance therapyBone MarrowInternal medicineHumansMedicineBiomarker discoveryMultiple myelomaCancer immunologybusiness.industryHematologymedicine.diseaseFlow Cytometrymedicine.anatomical_structureSmouldering myelomaBone marrowbusinessBiomarkersmyeloma flow cytometry single cell smouldering myeloma
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Experiences from Software Maintenance Seminars: Organizing Three Seminars with 127 Groups

2009

Software maintenance and evolution (SME) is an important but problematic topic-area for university-level computer science education. Seminars can be used to provide versatile and up-to-date knowledge for students regarding scientifically relevant issues. We have organized three systematic university-level seminars on SME with a total of 127 seminar groups. Each group has been assigned a task of analyzing one scientific SME-article. The main results include the general confirmed feasibility of the selected seminar-based approach. The paper describes the background of the seminars, their contents, and experiences concerning organization and feasibility of the seminars. The results support org…

Social software engineeringSoftware Engineering Process GroupComputingMilieux_THECOMPUTINGPROFESSIONbusiness.industryComputer scienceSoftware maintenanceSoftware peer reviewTask (project management)Engineering managementPersonal software processComputingMilieux_COMPUTERSANDEDUCATIONSoftware engineeringbusinessSoftware project management
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