133,363 research outputs found
“Sergipanamericanos”: a mídia televisiva de Sergipe no Pan Rio-2007
No full textEste estudo analisou a cobertura jornalística sobre os atletas sergipanos que participaram dos Jogos Pan-Americanos do Rio de Janeiro a partir da mídia televisiva. O material de análise desta pesquisa descritiva, com enfoque qualitativo, foi uma matéria veiculada em dezembro de 2007 em uma emissora local que apontou a retrospectiva deste grande evento esportivo para Sergipe. Há uma evidente tentativa de “sergipanizar” os atletas em função da naturalidade, ainda que estes residam e treinem fora do estado. A estratégia da mídia televisiva recorre à dialética local-global para criar entre os telespectadores um sentimento de identidade com os atletas.Rede cede
Partial hydrogenation of a C18:3-rich FAME mixture over Pd/C
No full textThe study focuses on the partial hydrogenation of a C18:3-rich FAME mixture (a-linolenate/linoleate:
~3.5:1 mol/mol) taken as a model of FAME materials obtainable from alternative non-edible oils deriving
from non-food biomass, which are suitable feedstocks for 2nd generation biodiesel. High C18:1 yield and
selectivity required an accurate control of reaction time and temperature because of stearate generation
through consecutive reactions C18:3/C18:2/C18:1/C18:0. In n-heptane, under mild conditions
(50 °C, 0.1 MPa H2, 1 h), the FAME mixture was converted over Pd(5%)/C into C18:1 selectively (97.8%),
with high yield (81.1%). The final mixture was C18:3-free (0.1%) and showed a low content of stearate
(2.0%). Also the C18:2 component was markedly reduced (21.5%/16.7%). The content of trans-C18:1-
monoenes was 39.0%. A lower content of trans-C18:1 (16.4%) was attained at 0 °C (1.5 h). Under the
latter conditions, stearate and C18:3 in the final product were, respectively, 3.3% and 1.5%. Remarkably,
Pd/C can act as a tunable catalyst being able to promote effectively the full hydrogenation of the FAME
mixture to stearate under uncommon very mild conditions (0 °C, 0.1 MPa) within a relatively short time
(6 h). Under solventless conditions or in polar solvents (MeOH, THF, dimethyl carbonate), hydrogenation
was slower and less selective than in n-heptane
LATERALITY AND PERFORMANCE OF AGILITY TRAINED DOGS
No full textThe influence of lateralization on 19 agility trained dogs (Canis familiaris) was investigated by scoring paw preference to hold a food object and relating it to performance during typical agility obstacles (jump/A-frame and weave poles). In addition, because recent behavioural studies reported that visual stimuli of emotional valence presented to one visual hemifield at a time affect visually guided motor responses in dogs, the possibility that the position of the owner respectively in the left and in the right canine visual hemifield might be associated with quality of performance during agility was considered. Dogs’ temperament was also measured by an owner-rated questionnaire.
The most relevant finding was that agility trained dogs displayed longer latencies to complete the obstacles with the owner located in their left visual hemifield respect to the right. Interestingly, results showed that this phenomenon was significantly linked to both dogs' trainability and the strength of paw preference
Sofferenza Sociale e Violenza Strutturale
No full textIl contributo si concentra sull'impatto dei concetti di sofferenza sociale e di violenza strutturale sui dibattiti teorici contemporanei, mettendo in luce come essi impongano la ricomposizione delle frattura teorica fra analisi dei processi simbolico-culturali e economico-politici (caratterizzante principalmente tradizioni di studio non europee)
Rotorcraft Safety: A Simulator-based Training Perspective
No full textTraining has the potential to inject a “safety vaccination” into the rotorcraft community by reducing the number of accidents. The term training should not be intended only in a strict sense, i.e., as pilot technical skills training, but more broadly as risk avoidance and safety culture training. As in the case of vaccination, where immunity is created only when applied on a large scale, helicopter accidents will not be eradicated until every player in the rotorcraft community is involved in the safety enhancement process. In particular, as outlined by accident and safety reports, a reduction in the helicopter accident rate cannot be accomplished disregarding pilots’ training and the contribution that _ight simulators can provide to both training and certi_cation. This paper provides an overview of the research into simulator training for helicopter pilots conducted as part of the European Joint Doctorate NITROS (Network for Innovative Training on Rotorcraft Safety). An approach that requires an in-depth analysis of the actual training task is adopted for two different maneuvers, namely hover and autorotation. This approach enables the training developer to understand what are the aspects of the actual training situation that should be reproduced in the simulated training situation to avoid ineffective training and negative transfer of skills. Moreover, such an approach allows to identify differences in terms of requirements between the training of basic and advanced maneuvers and between initial and recurrent training. The results of three different pilot-in-theloop experiments, performed to explicitly con_rm the effectiveness of developed training programs and to understand whether certain elements of the simulation can foster the development of superior _ying skills, are summarized in this paper.Control & Simulatio
Concorrenza Bancaria, Switching Cost e Vulnerabilità del Cliente
No full textAnalisi del comportamento del singolo consumatore nella scelta di cambiare o meno la propria banca principale intesa come la prima presso cui ha aperto un conto corrente
A quasi-Linear Parameter Varying (qLPV) Approach for Tiltrotor Conversion Modeling and Control Synthesis
No full textA safe conversion of tiltrotor from helicopter mode to airplane mode is ensured through maneuvering within the conversion corridor, a constrained region in the airspeed versus nacelle angle graph. This paper presents preliminary work in the development of an automatic conversion maneuver. A high order quasi-Linear Parameter Varying model is developed for XV-15 that combines discrete state-space models to provide a varying model dynamics and trim characteristics during the conversion maneuver. Tracking control system based on gain scheduled linear quadratic tracker with integrator (LQTI) is designed for automatic conversion maneuver for XV-15 based on the qLPV model. Lastly, an optimization routine is performed to fly various conversion trajectories and identify optimal conversion maneuver
MeSH term explosion and author rank improve expert recommendations
No full textInformation overload is an often-cited phenomenon that reduces the productivity, efficiency and efficacy of scientists. One challenge for scientists is to find appropriate collaborators in their research. The literature describes various solutions to the problem of expertise location, but most current approaches do not appear to be very suitable for expert recommendations in biomedical research. In this study, we present the development and initial evaluation of a vector space model-based algorithm to calculate researcher similarity using four inputs: 1) MeSH terms of publications; 2) MeSH terms and author rank; 3) exploded MeSH terms; and 4) exploded MeSH terms and author rank. We developed and evaluated the algorithm using a data set of 17,525 authors and their 22,542 papers. On average, our algorithms correctly predicted 2.5 of the top 5/10 coauthors of individual scientists. Exploded MeSH and author rank outperformed all other algorithms in accuracy, followed closely by MeSH and author rank. Our results show that the accuracy of MeSH term-based matching can be enhanced with other metadata such as author rank
Scheda del vol. I Germini sopra quaranta meritrice della città di Fiorenza, edizione e commento di D. Romei, s.l., isolotto, 2020, pp. 155.
No full textScheda del vol. I Germini sopra quaranta meritrice della città di Fiorenza, edizione e commento di D. Romei, , s.l., isolotto,
2020, pp. 155
Citizens’ engagement with popularization and with populist actors on Facebook : A study on 52 leaders in 18 Western democracies
No full textBy considering the Facebook activity of 52 party leaders during national election campaigns held in 18 Western democracies that went to the polls between 2013 and 2017, we study users’ engagement with popularization and with populist leaders. Applying negative binomial hierarchical models on original data of party leaders’ Facebook pages, we find that elements of popularization in leaders’ posts are associated with an increase in users’ acknowledgement (number of likes), decreases in redistribution (number of shares), while they do not affect discursive interactions (number of comments). Our research also shows that, irrespective of their content, messages published by populist leaders are more capable of increasing both acknowledgement and redistribution, while they do not generate more comments than those published by non-populists. Finally, we find that when populist leaders adopt popularization as a communicative style, they do not achieve any extra gain vis-a-vis non-populist actors
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