Search results for "Scheme"

showing 7 items of 527 documents

Effects of Temperature and Humidity on Radio Signal Strength in Outdoor Wireless Sensor Networks

2015

Many wireless sensor networks operating outdoors are exposed to changing weather conditions, which may cause severe degradation in system performance. Therefore, it is essential to explore the factors affecting radio link quality in order to mitigate their impact and to adapt to varying conditions. In this paper, we study the effects of temperature and humidity on radio signal strength in outdoor wireless sensor networks. Experimental measurements were performed using Atmel ZigBit 2.4GHz wireless modules, both in summer and wintertime. We employed all the radio channels specified by IEEE 802.15.4 for 2.4GHz ISM frequency band with two transmit power levels. The results show that changes in …

ta113ta213radio signal strengthComputer scienceFrequency bandbusiness.industryRadio Link ProtocolhumiditytemperatureTransmitter power outputTemperature measurementlaw.inventionlawMobile wireless sensor networkElectronic engineeringWirelesslämpötilaTelecommunicationsbusinesswireless sensor networksWireless sensor networkDiversity scheme
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Branching Ratios and Spectral Functions of $\tau$ Decays: final ALEPH measurements and physics implications

2005

The full LEP-1 data set collected with the ALEPH detector at the $Z$ pole during 1991-1995 is analysed in order to measure the $\tau$ decay branching fractions. Extensive systematic studies are performed, in order to match the large statistics of the data sample corresponding to over 300 000 measured and identified $\tau$ decays. Branching fractions are obtained for the two leptonic channels and eleven hadronic channels defined by their respective numbers of charged particles and $\pi^0$'s. Using previously published ALEPH results on final states with charged and neutral kaons, corrections are applied to the hadronic channels to derive branching ratios for exclusive final states without kao…

tau; branching fractions; Z poleParticle physicsbranching fractionElectron–positron annihilationHadronFOS: Physical sciencesGeneral Physics and AstronomyStrangeness01 natural sciencesAsymptotic freedomhadronicHigh Energy Physics - ExperimentNuclear physicsHigh Energy Physics - Experiment (hep-ex)tau decay; PION FORM-FACTOR; ELECTROWEAK RADIATIVE-CORRECTIONSquantum chromodynamictau decay0103 physical sciences[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]tau010306 general physicsMinimal subtraction schemeQuantum chromodynamicsPhysics010308 nuclear & particles physicsZ poleHigh Energy Physics::PhenomenologyCharged particle3. Good healthsum rulebranching fractionsIsospinHigh Energy Physics::ExperimentELECTROWEAK RADIATIVE-CORRECTIONSParticle Physics - ExperimentPION FORM-FACTOR
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Il primo concorso per il Palazzo di Giustizia a Roma del 1884. Ricostruzione critica del progetto di Ernesto Basile

2019

1. Breve descrizione dell’oggetto di studio Il concorso del Palazzo di Giustizia di Roma si svolge in quattro fasi svolte tra il 1884 e il 1887. Il progetto per il primo concorso, del 1884, redatto dall’allora giovanissimo Ernesto Basile (Palermo 1857-1932), rivela una grande perizia progettuale che trasforma il complesso programma funzionale in un austero edificio in stile neofiorentino. I disegni originari dell’opera, non realizzata, conservati presso la Dotazione Basile del Dipartimento di Architettura dell’Università di Palermo, sono stati oggetto di studio propedeutico alle fasi di analisi, interpretazione e ricostruzione congetturale del modello digitale. 2. Stato dell’arte e riferime…

the spatiality of the great vestibule• elaboration of axonometric and perspective view• choice of interpretation criteria in case of project incongruitiethe vaulted arcades.the space of the main courtyard which Basile outlines in a sketch• elaboration of analytical drawings (modular functional compositional volumetric schemes)• modular study and flat vectorization• application of rendering techniques consistent with the available information. 4. Objectives pursued and achieved Conjectural reconstruction achieved the following results: • formulation of analytical documents which show how the planimetric and altimetric articulation are perfectly consistent with the functional program• definition of the level of uncertainty1. Brief description of the object of study The competition of the Palace of Justice in Rome takes place in four phases between 1884 and 1887. The project for the first competition in 1884 drawn up by the then very young Ernesto Basile (Palermo 1857-1932) reveals a great deal of design expertise that transforms the complex functional program into an austere building in neo-florentine style. The original drawings of the building not realized kept in the Basile Endowment of the Department of Architecture of the University of Palermo have been the subject of preliminary study to the phases of analysis interpretation and conceptual reconstruction of the digital model. 2. State of the art and main bibliographical references The conjectural reconstruction on the basis of drawings and archival documents is a well-established and codified practice thanks to various disciplinary contributions at national and international level. See: F. I. Apollonio Classification Schemes for Visualization of Uncertainty in Digital Hypothetical Reconstruction in M. Sander P. Mieke P. Kuroczyński M. Ioannides 3D Research Challenges in Cultural Heritage II Cham (CH) 2016. G. Antista M. Cannella Ricostruire. Architettura - Storia – Rappresentazione Palermo 2015. For studies related to the examinated project see: E. Mauro E. Sessa I disegni della Collezione Basile Roma 2015. E. Sessa Ernesto Basile. Dall'eclettismo Classicista al Modernismo Palermo 2002. 3. Definition of the methodologies adopted in the research Methodological phases: • historical analysi• survey of the original drawings and dimensional verification of the flat scanSettore ICAR/17 - Disegno• construction of perspective views deduced from the original drawings that highlight: the volumetric hierarchy and the function of the bugnate in the scanning of the masonry ma• three-dimensional modeling
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A survey on algebraic dilatations

2023

In this text, we wish to provide the reader with a short guide to recent works on the theory of dilatations in Commutative Algebra and Algebraic Geometry. These works fall naturally into two categories: one emphasises foundational and theoretical aspects and the other applications to existing theories.

torsorsaffine modificationsdifferential Galois groupsformal blowupsNéron blowups[MATH] Mathematics [math]Commutative Algebra (math.AC)shtukasMathematics - Algebraic Geometryaffine blowupsFOS: Mathematicsalgebraic dilatations[MATH]Mathematics [math]Algebraic Geometry (math.AG)multi-centered dilatationsdilatations of schemesA 1 -homotopy theoryKaliman-Zaidenberg modificationslevel structuresMoy-Prasad isomorphismrepresentations of p-adic groupsMathematics - Commutative Algebramono-centered dilatationslocalizations of ringscongruent isomorphismsTannakian groupsaffine geometry
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A Computationally Efficient Online/Offline Signature Scheme for Underwater Wireless Sensor Networks

2022

Underwater wireless sensor networks (UWSNs) have emerged as the most widely used wireless network infrastructure in many applications. Sensing nodes are frequently deployed in hostile aquatic environments in order to collect data on resources that are severely limited in terms of transmission time and bandwidth. Since underwater information is very sensitive and unique, the authentication of users is very important to access the data and information. UWSNs have unique communication and computation needs that are not met by the existing digital signature techniques. As a result, a lightweight signature scheme is required to meet the communication and computation requirements. In this researc…

underwater wireless sensor networks; certificateless online/offline signature; authentication schemeElectrical and Electronic EngineeringVDP::Teknologi: 500::Informasjons- og kommunikasjonsteknologi: 550BiochemistryInstrumentationAtomic and Molecular Physics and OpticsAnalytical ChemistrySensors
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A Coding Scheme Development Methodology Using Grounded Theory for Qualitative Analysis of Pair Programming

2008

A number of quantitative studies of pair programming (the practice of two programmers working together using just one computer) have partially conflicting results. Qualitative studies are needed to explain what is really going on. We support such studies by taking a grounded theory (GT) approach for deriving a coding scheme for the objective conceptual description of specific pair programming sessions independent of a particular research goal. The present article explains why our initial attempts at using GT failed and describes how to avoid these difficulties by a predetermined perspective on the data, concept naming rules, an analysis results metamodel, and pair coding. These practices ma…

video datacoding scheme developmentpair programminggrounded theory
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Free school fruit: can an extra piece of fruit every school day contribute to the prevention of future weight gain? A cluster randomized trial

2014

Background: Several school fruit programs are initiated with the aim to improve diet and thereby contribute to reduce the prevalence of overweight. To date, no published studies have demonstrated that school fruit schemes do prevent overweight.Objective: The aim of the present study was to assess if increased consumption of fruits and vegetables, due to free school fruit, have an impact on future weight status.Design: An intervention study including 10- to 12-year-old children from nine schools in two Norwegian counties (Hedmark and Telemark) participating in the Norwegian School Fruit Program for free during the school year 2001/2002 and children from 29 control schools. Follow-up studies …

weight statusSchool fruit scheme; free fruit; fruits and vegetables; overweight; weight statusoverweightOriginal Articleschool fruit schemefruits and vegetableslcsh:TX341-641free fruitPublic Health NutritionSchool fruit; weightlcsh:Nutrition. Foods and food supplyVDP::Medical disciplines: 700::Health sciences: 800::Nutrition: 811Food & Nutrition Research
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