Search results for "Synchro"

showing 10 items of 886 documents

Emittance Growth by Synchrotron Radiation in a Double-Sided Microtron

1999

Here we present results of calculations of emittance growth caused by quantum fluctuations of synchrotron radiation (QFSR) for a 1.5 GeV double-sided microtron (DSM). We did both semi-analytical estimations, employing known Twiss parameters for the DSM orbits, and a computer simulation of these stochastic effects using the program SYTRACE. This showed that the normalized emittance growth was within reasonable limits, by a factor of about 1.5, thus permitting e.g. the installation of small aperture linacs on the DSM axes.

Nuclear physicsPhysicsStochastic processMagnetPhysics::Accelerator PhysicsSynchrotron radiationThermal emittanceLarge apertureMicrotronAccelerators and Storage RingsQuantum fluctuationLinear particle accelerator
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A CASE REPORT OF 2 METACHRONOUS ORAL SQUAMOUS CELL CARCINOMAS AND 1 RECURRENCE IN 7 YEARS

2022

ORAL SQUAMOUS CELL CARCINOMAS FIELD CANCERIZATION SYNCHRONOUS TUMOR METACHRONOUS TUMOR
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Unified Parallel C++

2018

Abstract Although MPI is commonly used for parallel programming on distributed-memory systems, Partitioned Global Address Space (PGAS) approaches are gaining attention for programming modern multi-core CPU clusters. They feature a hybrid memory abstraction: distributed memory is viewed as a shared memory that is partitioned among nodes in order to simplify programming. In this chapter you will learn about Unified Parallel C++ (UPC++), a library-based extension of C++ that gathers the advantages of both PGAS and Object Oriented paradigms. The examples included in this chapter will help you to understand the main features of PGAS languages and how they can simplify the task of programming par…

Object-oriented programmingSource codeComputer sciencemedia_common.quotation_subjectParallel computingSoftware_PROGRAMMINGTECHNIQUESShared memoryAsynchronous communicationUnified Parallel CDistributed memoryPartitioned global address spacecomputercomputer.programming_languageAbstraction (linguistics)media_common
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Treatment sequence of synchronously (liver) metastasized colon cancer

2016

No standards for staging, systemic therapy or the timing of an operation are defined for patients newly diagnosed with synchronous metastases and a primary in the colon. An expert group of radiologists, medical, radiation and surgical oncologists therefore came together to discuss staging and treatment sequence for these patients and came up with a recommendation based on current evidence of potential therapeutic options. The discussion was organized to debate recommendations centred on 5 topics and therefore the position paper is built upon these titles and their subtitles. Editrice Gastroenterologica Italiana S.r.l.

Oncologymedicine.medical_specialtyColonColorectal cancermedicine.medical_treatment030230 surgeryTreatment sequenceSystemic therapy03 medical and health sciencesLiver metastases0302 clinical medicinePharmacotherapyDrug TherapyInternal medicinemedicineHepatectomyHumansCombined Modality TherapyTreatment optionsNeoplasm StagingHepatologybusiness.industryGeneral surgeryLiver NeoplasmsGastroenterologyAntineoplastic Protocolsmedicine.diseaseCombined Modality TherapyExpert groupColorectal cancerLiver030220 oncology & carcinogenesisPosition paperHepatectomyColorectal NeoplasmsbusinessSynchronous presentation
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Synchronicity matters: defining the characteristics of digital generations

2015

This paper investigates whether or not the proposition that the second digital generation (or so-called digital natives) is more engaged in social use of the Internet than older generations is tenable. By analysing nationally representative questionnaire-based survey data collected from Finland in 2011 (N = 612), the study shows that rather than social use of the Internet in general, it is the synchronicity of online communication that distinguishes user generations. Results show that, in contrast to asynchronous modes of online communication (e.g. social networking sites, blogs and online discussion forums), synchronous modes (e.g. instant messaging and Internet calls) are clearly generati…

Online discussionsocial mediasosiaalinen media050801 communication & media studiesLibrary and Information SciencesWorld Wide Web0508 media and communicationsDigital nativeSynchronicity0502 economics and businessSocial mediaSociologyta518viestintäInternetbusiness.industryCommunication05 social sciencessynchronicityAsynchronous communicationta5141Survey data collectionThe InternetDigital generationsComputer-mediated communicationbusiness050203 business & managementInformation, Communication & Society
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H<inf>∞</inf> synchronization of Markovian jump master-slave systems with delay

2012

The problem of synchronization is investigated for a class of master-slave systems with time-varying delays and Markovian switching parameters. Using an appropriate Lyapunov-Krasovskii functional, a synchronization law which includes the master-slave parameters is established for designing a mode-dependent output feedback control law in terms of LMIs. A numerical example is given to show the effectiveness of the method.

Output feedbackMarkovian jumpComputer Science::Systems and ControlControl theoryH controlMaster/slaveMarkovian switchingSynchronizationMathematics2012 12th International Conference on Control Automation Robotics & Vision (ICARCV)
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An Output Feedback Control Design for $$ {\rm H}_\infty $$ Synchronization of Master-Slave Markovian Jump Systems with Time-Varying Delays

2012

In this chapter, an output feedback control proach is proposed for exponential synchronization problem of master slave systems with both discrete and distributed time-varying delays and Markovian switching parameters. Using an appropriate Lyapunov Krasovskii functional, some delay-dependent sufficient conditions and a synchronization law which include the master slave parameters are established for designing a mode-dependent output feedback control law in terms of linear matrix inequalities. The controller guarantees the \( {\rm{H}}_\infty \) synchronization of the two coupled master and slave systems regardless of their initial states. A numerical example is given to show the effectiveness…

Output feedbackMarkovian jumpComputer scienceControl theorySynchronization (computer science)Control (management)Linear matrix inequalityMaster/slaveMarkovian switching
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Spectral and morphological analysis of the remnant of Supernova 1987A with ALMA and ATCA

2014

We present a comprehensive spectral and morphological analysis of the remnant of Supernova (SN) 1987A with the Australia Telescope Compact Array (ATCA) and the Atacama Large Millimeter/submillimeter Array (ALMA). The non-thermal and thermal components of the radio emission are investigated in images from 94 to 672 GHz ($\lambda$ 3.2 mm to 450 $\mu$m), with the assistance of a high-resolution 44 GHz synchrotron template from the ATCA, and a dust template from ALMA observations at 672 GHz. An analysis of the emission distribution over the equatorial ring in images from 44 to 345 GHz highlights a gradual decrease of the east-to-west asymmetry ratio with frequency. We attribute this to the shor…

PARTICLE-ACCELERATIONAstrophysics::High Energy Astrophysical PhenomenaLIGHT-CURVEAstrophysicsAstrophysics::Cosmology and Extragalactic AstrophysicsPulsar wind nebulaSubmillimeter ArrayGALACTIC RADIO EMISSIONlaw.inventionneutron [stars]Far infraredPulsarlawQCAstrophysics::Galaxy AstrophysicsQBPhysicsSN-1987ANEUTRINO BURSTsupernova remnants [ISM]RAY-EMISSIONMAGNETIC-FIELDAstronomy and AstrophysicsPULSARnon-thermal [radiation mechanisms]SynchrotronEVOLUTIONSupernovaPhysics and Astronomyindividual (SN 1987A) [supernovae]Space and Planetary Sciencethermal [radiation mechanisms]Spectral energy distributiongeneral [radio continuum]MillimeterAstrophysics::Earth and Planetary AstrophysicsAstrophysics - High Energy Astrophysical PhenomenaSN 1987A
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Stability and nature of the volume collapse of ε-Fe2O3 under extreme conditions

2018

Iron oxides are among the major constituents of the deep Earth’s interior. Among them, the epsilon phase of Fe2O3 is one of the less studied polymorphs and there is a lack of information about its structural, electronic and magnetic transformations at extreme conditions. Here we report the precise determination of its equation of state and a deep analysis of the evolution of the polyhedral units under compression, thanks to the agreement between our experiments and ab-initio simulations. Our results indicate that this material, with remarkable magnetic properties, is stable at pressures up to 27 GPa. Above 27 GPa, a volume collapse has been observed and ascribed to a change of the local env…

PHASE-TRANSFORMATIONEquation of stateMaterials scienceXRDScienceSILICATEIron oxideIRON(III) OXIDEGeneral Physics and Astronomy02 engineering and technology01 natural sciencesGeneral Biochemistry Genetics and Molecular BiologyMantle (geology)ArticlePhysics::Geophysicschemistry.chemical_compoundCondensed Matter::Materials ScienceX-RAY-DIFFRACTIONMAGNETIC PHASESpin crossoverPhase (matter)synchrotron0103 physical sciences[CHIM]Chemical SciencesCRYSTAL-STRUCTUREe-Fe2O3010306 general physicslcsh:ScienceMultidisciplinaryMössbauer spectroscopyIRONQIron(III) oxideSPIN-CROSSOVERGeneral Chemistry021001 nanoscience & nanotechnologySilicateTHERMAL-DECOMPOSITIONEXAFShigh pressureFE2O3 POLYMORPHdiamond anvil cellchemistry13. Climate actionChemical physicslcsh:Q0210 nano-technologyEarth (classical element)Nature Communications
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Overview and performance comparison of grid synchronization algorithms

2014

Distributed power generation units are experiencing an impressive growth. Consequently, the amount of energy injected by non-linear loads as power converters is expected to increase. Stability and quality of the overall grid are heavily affected by performances of grid-side converters. In this paper, an overview of grid-synchronization technique is proposed. The grid-side inverter is implemented in MATLAB/Simulink® environment including current control and grid-synchronization section. Both Synchronous Reference Frame (SRF) and Decoupled Double Synchronous Reference Frame (DDSRF) PLL algorithms are implemented. A performance comparison is carried out under ideal and unbalanced utility condi…

PLLComputer scienceGrid synchronizationSettore ING-IND/32 - Convertitori Macchine E Azionamenti ElettriciConvertersGridPower (physics)Phase-locked loopElectronic engineeringpower converterInvertersmart gridMATLABAlgorithmcomputerEnergy (signal processing)computer.programming_languageReference frame2014 International Symposium on Power Electronics, Electrical Drives, Automation and Motion
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