Search results for "Moving"

showing 10 items of 182 documents

A thermoelastic instability problem for axially moving plates

2016

Problems of stability and deformation of a moving web, traveling between a system of rollers at a constant velocity are considered. The plate is subjected to a combined thermomechanical loading, including pure mechanical in-plane tension and also centripetal forces. Thermal strains corresponding to thermal tension and bending of the plate are accounted for. The problem of out-of-plane thermomechanical divergence (buckling) is reduced to an eigenvalue problem, which is studied analytically.

axially moving platethermoelastic instabilitydivergence
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Estimates for Divergence Velocities of Axially Moving Orthotropic Thin Plates

2014

Some models for axially moving orthotropic thin plates are investigated analytically via methods of complex analysis to derive estimates for critical plate velocities. Linearised Kirchhoff plate theory is used, and the energy forms of steady-state models are considered with homogeneous and inhomogeneous tension profiles in the cross direction of the plate. With the help of the energy forms, some limits for the divergence velocity of the plate are found analytically. In numerical examples, the derived lower limits for the divergence velocity are analysed for plates with small flexural rigidity. peerReviewed

axially movingPhysics::Instrumentation and DetectorsGeneral MathematicsAerospace EngineeringOcean EngineeringGeometry02 engineering and technologyOrthotropic material01 natural sciencesPhysics::Fluid Dynamics0203 mechanical engineering0103 physical sciencesorthotropicta216Divergence (statistics)010301 acousticsCivil and Structural EngineeringMathematicsTension (physics)Mechanical Engineeringkalvot (biologia)Flexural rigidityMechanicsstabilityPhysics::Classical PhysicsCondensed Matter Physicslautaset (astiat)020303 mechanical engineering & transportsplatesmembranesMechanics of MaterialsHomogeneousAutomotive EngineeringPlate theoryAxial symmetryMechanics Based Design of Structures and Machines
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Vecchi e nuovi problemi in tema di intervento dei creditori nell’esecuzione (note a margine di Cass. S.U. n. 61 del 7 gennaio 2014)

2015

Nel contributo in oggetto l'autore, muovendo dalla decisione delle Sezioni Unite della Cassazione n. 61 del 7 gennaio 2014, coglie l'occasione per riesaminare le vecchie e nuove problematiche sottese all’intervento dei creditori nel processo esecutivo. Il primo tema affrontato è quello della par condicio creditorum, che viene esaminata nella sua storia evolutiva dal Code Napoleon, al suo periodo di massima estensione, dato dal codice del 1940, fino al suo ridimensionamento a seguito delle riforme del 2005. Esamina quindi la possibilità del possibile superamento quoad effectum della distinzione tra intervento di creditori con titolo e senza titolo, alla luce delle evoluzioni della giurisprud…

b) the same par condicio creditorum principle and the consequent possibility of intervention of third party in the execution. It concludes however that a revolution like the aforesaid explained would be only apparently advantageouOld and new problems related to the intervention of creditors in the expropriation (marginal notes at Cass. Sez. Un. January 7 2014 n. 61) Moving from the decision of the Sezioni Unite n. 61/2014 the author takes the opportunity to re-examine old and new problems related to the intervention of creditors in the forceable execution. The first major theme concerns par condicio creditorum which is examined in its evolutionary history since the Code Napoleon through its period of maximum extension (the Code of 1940) until its reduction as a result of the reforms of 2005. The author examines the possibility to overcome quoad effectum the distinction between sine titulo et cum titulo interveners in light of jurisprudence’s evolution between 1978 2009 and 2014. The possibility in particular concerns those creditors sine titulo the where credit has not been contested (ex art. 499 c.p.c.) by the debtor seek payment and partecipate to distribution. In the last section the author examines the possibilities for other creditors to contest the intervention of the creditor sine titulo ex art. 499 c.p.c. (utendo iuribus in subrogation in case of inaction of the debtor) or in the distribution phase ex art. 512 c.p.c. He concludes that the only person that will be really damaged if he doesn’t contest - ex art. 499 c.p.c. - the credit it is precisely the debtor. He also notes that in the legislation of the last decade the apparent effort to reduce the numbers of judicial enquiry incidental to forceable execution will never be achieved unless it’s eliminated in radice: a) the existence in our system of extrajudicial enforcement titulaSettore IUS/15 - Diritto Processuale Civilesince it would lead to increase autonomous expropriations (one for each creditor who can today intervene) and to increment judicial enquiries in order to form enforceable judgments
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Detecting motion independent of the camera movement through a log-polar differential approach

1997

This paper is concerned with a differential motion detection technique in log-polar coordinates which allows object motion tracking independently of the camera ego-motion when camera focus is along the movement direction. The method does not use any explicit estimation of the motion field, which can be calculated afterwards at the moving points. The method, previously formulated in Cartesian coordinates, uses the log-polar coordinates, which allows the isolation of the object movement from the image displacement due to certain camera motions. Experimental results on a sequence of real images are included, in which a moving object is detected and optical flow is calculated in log-polar coord…

business.industryCamera matrixComputer scienceComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISIONOptical flowImage processingReal imageGeneralized coordinatesMatch movingMotion fieldCamera auto-calibrationMotion estimationPinhole camera modelComputer visionArtificial intelligenceImage sensorbusinessFocus (optics)Camera resectioning
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Evaluation of Load transfer in rigid pavements by Rolling wheel deflectometer and Falling weight deflectometer

2020

Abstract Rigid pavements have widespread use, e.g, in motorways and airports, due to their excellent properties such as high bearing capacity and long lifetime. However, when rigid pavements fail it is often due to bad load transfer efficiency (LTE) at its joints. Traditional methods of measuring LTE can be time consuming. Here, we study the possibility of measuring LTE using a moving load with the aim of achieving higher productivity. An experiment simulating Rolling Weight Deflectometer (RWD) measurements on a joint was carried out to gain understanding and confidence that can guide the analysis of real RWD data. Continuous data from measurements across a joint allows for determination of…

business.industryComputer scienceMoving loadStructural engineeringRolling Wheel Deflectometer(RWD); Rigid Pavements; Load transferContinuous dataLoad transfer Rigid Pavements Rolling Wheel Deflectometer(RWD)Falling weight deflectometerRolling Wheel Deflectometer(RWD)Rigid PavementsTransfer efficiencyTransfer (computing)Load transferSettore ICAR/04 - Strade Ferrovie Ed AeroportiBearing capacitybusinessJoint (geology)Transportation Research Procedia
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Drivers of Competitiveness in European High-Tech Industries

2019

Our paper builds on the importance of high-tech manufacturing and knowledge-intensive services as significant competitiveness and economic growth drivers in the European Union and offers a fresh approach of the study on the competitiveness of secondary and tertiary high-tech industries across EU member states. Our analysis covers the 2008–2015 period and includes twelve old and new EU members. We opt for a balanced panel data approach in OLS and ARIMA frameworks to investigate the competitiveness of high-technology industries in the EU with the aim of uncovering the nature of the main explanatory factors behind their performance. Our results show that the number of persons employed and the …

education.field_of_studyHigher educationbusiness.industryPopulationHigh techmedia_common.cataloged_instanceProfitability indexAutoregressive integrated moving averageEuropean unionbusinesseducationProductivityIndustrial organizationmedia_commonPanel data
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Assessing the Beneficial Effects of Economic Growth: The Harmonic Growth Index

2011

In this paper we introduce the multidimensional notion of harmonic growth as a situation of diffused well-being associated to an increase of per capita GDP. We say that a country experienced a harmonic growth if during the observed period all the key indicators, proxies of the endogenous and exogenous forces driving population well-being, show a significantly common pattern with the income dynamics. The notion is operationalized via an index of time series harmony which follows the functional data analysis approach. This Harmonic Growth Index (HGI) is based on comparisons between the coefficients from cubic B-splines interpolation. Such indices are then synthesized in order to provide the g…

education.field_of_studyOperationalizationPopulationFunctional data analysisDevelopment Growth Index Time series patternHuman development (humanity)Gross domestic productExemplificationEconometricsHuman Development IndexAutoregressive integrated moving averageSettore SECS-S/05 - Statistica SocialeeducationMathematics
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On the critical velocities and free vibrations of axially moving elastic webs

2014

elastic stabilitydampingaxially movingenergiahäviön aiheuttama epästabiilisuusvaimennuselastinen stabiilisuuslankaanalytical solutionsfree vibrationsaksiaalisesti liikkuvadestabilizationstringsauvaanalyyttiset ratkaisutvapaat värähtelytroddissipation-induced
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On the mechanical stability and out-of-plane dynamics of a travelling panel submerged in axially flowing ideal fluid : a study into paper production …

2011

elastic stabilitymallintaminenpaperirainapaper makingmekaniikkaaxially movingpaperinvalmistusfluid-structure interactionmassa- ja paperiteollisuuslaskennallinen mekaniikkamenetelmätpotential flowpapermaking machineryFSIpaper webeigenvalue problemvalmistuspaneldynamiikkapaperikoneet
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Memory‐type control charts for censored reliability data

2023

Control charts are commonly used to monitor a process to detect undesirable changes. The main goal of this work is to propose exponentially weighted moving average (EWMA) and cumulative sum (CUSUM) control charts to track a process by utilizing type-I censored generalized exponential (GE) distributed data. In particular, the censored data are replaced with the conditional expected value (CEV). A comparison between CUSUM and CUSUM ignoring unobserved covariates (CUSUM-IUC) charts is also a part of this study. The GE distribution is considered due to its application in reliability analysis. The performance of the charts is evaluated by using the average run length along with the standard devi…

exponentially weighted moving averageAverage run lengthSettore SECS-S/02 - Statistica Per La Ricerca Sperimentale E Tecnologicastandard deviation of run lengthcumulative sumManagement Science and Operations ResearchType-I censoringSafety Risk Reliability and QualityQuality and Reliability Engineering International
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