Search results for " sample"

showing 10 items of 456 documents

The Impact of Consulting Service on Spanish Firms

2003

Introduction Specialized services that help in efficient decision-making in company management--that is consulting service--undoubtedly make up one of the most dynamic sectors of the economy in most European countries and in Spain (Rubalcaba 1997; Camacho 1998; Gonzalez 1999). There is a huge amount of literature available on the subject of consulting, and it often is stated that the consultant contributes a large dose of common sense to a management situation that is not always rational. (1) However, the consultant is not a magician who discovers what the client did not know, although the consultant is able to look at the problem from a more appropriate angle and his or her services should…

Service (business)Quality managementStrategy and Managementmedia_common.quotation_subjectSubsidyJudgment sampleGeneral Business Management and AccountingQuality management systemMarket segmentationManagement of Technology and InnovationEconomicsQuality (business)MarketingManagement processmedia_commonJournal of Small Business Management
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Un nuovo campionatore per la misura della perdita di suolo in parcelle attrezzate

2012

Le misure di perdita di suolo in parcelle attrezzate necessitano la conoscenza del peso del materiale eroso intercettato nella sezione terminale delle parcelle. Nell’area sperimentale di Sparacia attrezzata per la misura della perdita di suolo i deflussi torbidi prodotti in seguito ad un evento erosivo vengono convogliati mediante una grondaia posta a valle di ciascuna parcella all’interno di vasche di accumulo. Per misurare la frazione di materiale solido presente nel volume della sospensione raccolto in dette vasche, si propone l’utilizzo di un nuovo campionatore appositamente predisposto. Esso consiste in un cilindro di ottone, di noto diametro, dotato nella sezione terminale di una valv…

Settore AGR/08 - Idraulica Agraria E Sistemazioni Idraulico-ForestaliMisura di perdita di suolo deflussi torbidi evento erosivo vasche di accumulo campionatore.Soil loss measurement runoff erosive event tanks sampler.
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A hybrid observer for localization from noisy inertial data and sporadic position measurements

2023

We propose an asymptotic position and speed observer for inertial navigation in the case where the position measurements are sporadic and affected by noise. We cast the problem in a hybrid dynamics framework where the continuous motion is affected by unknown continuous-time disturbances and the sporadic position measurements are affected by discrete-time noise. We show that the peculiar hybrid cascaded structure describing the estimation error dynamics is globally finite-gain exponentially ISS with gains depending intuitively on our tuning parameters. Experimental results, as well as the comparison with an Extended Kalman Filter (EKF), confirm the effectiveness of the proposed solution with…

Settore ING-INF/04 - AutomaticaControl and Systems EngineeringLocalization sampled-data observer sporadic measurements hybrid cascaded systemsAnalysisComputer Science Applications
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A Psychometric Evaluation of the Group Environment Questionnaire in a Sample of Professional Basketball and Soccer Players

2013

Psychometric properties of the Group environment Questionnaire were investigated in a large sample of soccer (n = 222) and professional basketball players (n = 375). Confirmatory factor analysis was performed both on the total sample and on the two sub samples through a multi-group approach; associations between cohesion and the duration of belonging to the team were also explored. Results confirmed the four-factor structure proposed by Carron's original model even though some items with low loadings were eliminated. No signifcant associations were found between team cohesion and the duration of belonging to the team. © Perceptual & Motor Skills 2013.

Settore M-PSI/01 - Psicologia GeneraleAdultMaleBasketballTime FactorsAdolescentPsychometricseducationExperimental and Cognitive PsychologySample (statistics)BasketballYoung AdultSurveys and QuestionnairesSoccerHumansSensory SystemsConfirmatory factor analysisGroup cohesion psychometrics sport psychologyLarge sampleGroup ProcessesCohesion (linguistics)AthletesCohesion Group Environment Questionnaire Basket SoccerPsychologyFactor Analysis StatisticalSocial psychologyClinical psychology
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The Reciprocal Influences among Motivation, Personality Traits, and Game Habits for Playing Pokémon GO

2018

This article reports a study exploring motivations of Pokémon Game use, individual differences related to personality traits, and game habits. First, it analyzed Pokémon GO motivations through exploratory factor analysis (EFA) by administering online the Pokémon GO Motivational Scale to a group of Italian gamers (N = 560). Successively, a Confirmatory Factor Analysis (CFA) was conducted testing three factorial models of Pokémon Game motivations on a selected random sample (N = 310). Results showed a three-factor model of Pokémon GO Game motivations (i.e. Personal Needs, Social Needs and Recreation), accounting for 68.9% of total variance plus a general higher order factor that best fits the…

Settore M-PSI/01 - Psicologia GeneraleRandom sampleHuman Factors and ErgonomicsConfirmatory factor analyses (CFA)Individual Difference0502 economics and businessMultivariant analysiPsychology0501 psychology and cognitive sciencesBig Five personality traitsPersonality traitComputingMilieux_MISCELLANEOUS050107 human factorsMotivationThree-factors model05 social sciencesSettore M-PSI/03 - PsicometriaComputer Science ApplicationsHuman-Computer InteractionExploratory Factor Analysis (EFA)Factorial model[SCCO.PSYC]Cognitive science/Psychology050211 marketingPsychologySocial psychologyReciprocal
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Design and analysis of discrete choice experiments for models with response time

2013

Settore SECS-S/02 - Statistica Per La Ricerca Sperimentale E TecnologicaA sector of conjoint analysis (experimental design in marketing research) is made of the so called choice experiments. In choice experiments respondents undergo a questionnaire which is nowadays mostly submitted through the internet. The questionnaire proposes to the respondent a sequence of choice sets each one including two or more profiles being a profile a specific combination of attribute levels. The respondent selects the preferred profile for each choice set. Responses given by a sample of respondents are analysed through suitable methods aimed to eventually find the best combination of attribute levels. One method of analysis adopts the Multinomial Logit (MLN) model. In this article the authors show the results of the MLN analysis compared with another model of analysis which uses an additional response which can be easily recorded by electronically submitted questionnaires. In practice modern survey platforms like “Qualtrics” (the one used for this work) can record the so called “response latency” i.e. the time taken by the respondent to make the choice and select the most preferred profile in the choice set. Thanks to a response latency model further refined in this work it is possible to deduce the relative weight of importance of the profiles for each choice set and respondent. This type of response can be used in place of the dichotomous choice variable in the MLN model. The two models and methods of analysis are deeply compared and it is critically discussed when it is better to use one or the other method. As a result a more reliable estimate of the optimal profile comes up implying lower risks for new investments and marketing decisions.
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A Proposal to estimate the roaming–dog Total in an urban area through a PPSWOR spatial sampling with sample size greater than two

2018

Settore SECS-S/05 - Statistica SocialeDogs roaming in urban areas constitute an issue for public order hygiene and health. Proper planning of actions for health and security control and allocation of financial funds require the knowledge of the roaming–dog–population size in a given urban area. Unfortunately a reliable statistical procedure aimed to measure such population is not available yet in literature. This paper presents a simple reproducible survey sampling procedure to estimate the number of roaming dogs in an urban area through the description of a real study carried out on a restricted area of the city of Palermo in southern Italy. A sample of areas is drawn by means of a drawn–by–drawn spatial sampling with probabilities proportional to size and without replacement (PPSWOR). As inclusion probabilities are not available in closed form they are estimated by Monte Carlo approach which is of simple implementation and permits design–based variance estimation even when first–order inclusion probabilities are unknown.
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Biological tolerance of different materials in bulk and nanoparticulate form in a rat model: sarcoma development by nanoparticles

2006

In order to study the pathobiological impact of the nanometre-scale of materials, we evaluated the effects of five different materials as nanoparticulate biomaterials in comparison with bulk samples in contact with living tissues. Five groups out of 10 rats were implanted bilaterally for up to 12 months with materials of the same type, namely TiO 2 , SiO 2 , Ni, Co and polyvinyl chloride (PVC), subcutaneously with bulk material on one side of the vertebral column and intramuscularly with nanoparticulate material on the contralateral side. At the end of each implantation time, the site was macroscopically examined, followed by histological processing according to standard techniques. Malign…

Skin NeoplasmsSilicon dioxideBiological; tolerance; different; materials; bulk; nanoparticulate; rat model; sarcoma; development; nanoparticlesRat modelBiomedical EngineeringBiophysicsNanoparticleMetal NanoparticlesBioengineeringBiocompatible MaterialsBiochemistryPreneoplastic lesionBiomaterialschemistry.chemical_compoundNickelBulk samplesMaterials TestingmedicineAnimalsPolyvinyl ChlorideTitaniumSarcomaCobaltmedicine.diseaseSilicon DioxideRatsPolyvinyl chloridechemistrySarcomaImplantation timeBiotechnologyBiomedical engineeringResearch Article
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Measuring expectation for an affordance gap on a smartphone user interface and its usage among older adults

2020

The smartphone has become a ubiquitous mobile communication tool that plays a crucial role in the daily lives for Malaysian older adults. However, it is not easy for older adults to learn new interaction modes and adopt the smartphone user interface. In this paper, we aim to examine the affordances of a smartphone user interface and its usage by older adults through the lens of Norman’s execution/evaluation action cycle (EEAC) framework. A mobile-user interaction study was administered with four tasks. A paired sample t-test was conducted to analyze the affordance gap between different levels of expectation. The results revealed that three tasks (making phone calls, adding contacts, and usi…

Social Psychologybusiness.industryComputer scienceCommunicationMobile appsexecution/evaluation action cyclekäyttöaffordanceThrough-the-lens meteringälypuhelimetHuman-Computer InteractionPaired samplesPhoneHuman–computer interactionodotuksetsmartphone user interfaceMobile telephonyEvaluation - actionUser interfacebusinessAffordanceexpectationolder adultsaikuiset
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Navigating multiple logics: Legitimacy and the quest for societal impact in science

2022

Academic scientists are encouraged to pursue research that delivers both scientific and societal impact. This may involve a search for alternative mechanisms of social approval which lead to endorsement of scientists’ research goals. We explore how scientists mobilise and accumulate different forms of legitimacy, which might favour their participation in practices related to innovation and societal impact. We propose three specific sources of scientific legitimacy: i) scientists’ social networks (research-related legitimacy ties), ii) prominence in the relevant academic community (reputation-based legitimacy); and direct contact with the primary beneficiaries of the research (beneficiary-ba…

Social approvalbusiness.industrymedia_common.quotation_subjectGeneral EngineeringlegitimacyBeneficiarySocietal impact of nanotechnologyinstitutional logicssocietal impactPublic relationsresearch-related legitimacy tiesLarge sampleinnovation involvementManagement of Technology and InnovationPolitical scienceUNESCO::SOCIOLOGÍAAcademic communityreputation-based legitimacybeneficiary-based legitimacybusinessLegitimacyscience logicReputationmedia_commonTechnovation
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