OALib Journal期刊

ISSN: 2333-9721



匹配条件: “Felicetti” ,找到相关结果约42条。
Do compromisso ao comprometimento: o estudante e a aprendizagem
Felicetti, Vera Lucia;Morosini, Marília Costa;
Educar em Revista , 2010, DOI: 10.1590/S0104-40602010000500002
Abstract: this article, of bibliometric character, has as object the school learning, decentralizing the teacher as the sole responsible for the university teaching-learning quality. it intends to investigate the engagement of students as an essential aspect of the learning process. the paper starts with an interlocution with theorists who seem to approach this issue, with the database from anped (national association of postgraduate and research on education) and from capes (board of improvement for higher education personnel) as the main searching benchmarks. the reference starts from those research bodies because of their relevance in the field of scientific research. the article points out the need to continue the studies in this field, through an intense theoretical interlocution, as well as investigative practices related to the student.
Equidade e iniquidade no ensino superior: uma reflex?o
Felicetti, Vera Lucia;Morosini, Marília Costa;
Ensaio: Avalia??o e Políticas Públicas em Educa??o , 2009, DOI: 10.1590/S0104-40362009000100002
Abstract: the article addresses the equity issue in higher education from three aspects: equity of access, of participation and of results. it reflects and asks what is equity in this level of education. the theoretical framework was based on the studies presented at the organization for economic co-operation and development (oecd) 2008 and others. it presents a statistical comparison between the latest average scores of the students approved in the vestibular (brazilian university admission exam) of a public hei (higher education institution) in 2008 and the minimum score of the approved students in the admission exam of the same institution, in 2007. the theoretical interlocution and the statistical study characterize the state of knowledge of the subject under qualitative and quantitative aspects, strengthening the identification of the involved in the equity or the inequity in higher education. this paper highlights the existence of policies of affirmative actions as a way to increase the equity of access. the results indicate the existence of inequity in the primary and secondary education. the article emphasizes the need of further studies on equity in education.
Quantum Characterization of a Werner-like Mixture
Anna Felicetti,Stefano Mancini,Paolo Tombesi
Physics , 2002, DOI: 10.1103/PhysRevA.65.062107
Abstract: We introduce a Werner-like mixture [R. F. Werner, Phys. Rev. A {\bf 40}, 4277 (1989)] by considering two correlated but different degrees of freedom, one with discrete variables and the other with continuous variables. We evaluate the mixedness of this state, and its degree of entanglement establishing its usefulness for quantum information processing like quantum teleportation. Then, we provide its tomographic characterization. Finally, we show how such a mixture can be generated and measured in a trapped system like one electron in a Penning trap.
Simulation of Molecular Signaling in Blood Vessels: Software Design and Application to Atherogenesis
Luca Felicetti,Mauro Femminella,Gianluca Reali
Computer Science , 2013, DOI: 10.1016/j.nancom.2013.06.002
Abstract: This paper presents a software platform, named BiNS2, able to simulate diffusion-based molecular communications with drift inside blood vessels. The contribution of the paper is twofold. First a detailed description of the simulator is given, under the software engineering point of view, by highlighting the innovations and optimizations introduced. Their introduction into the previous version of the BiNS simulator was needed to provide to functions for simulating molecular signaling and communication potentials inside bounded spaces. The second contribution consists of the analysis, carried out by using BiNS2, of a specific communication process happening inside blood vessels, the atherogenesis, which is the initial phase of the formation of atherosclerotic plaques, due to the abnormal signaling between platelets and endothelium. From a communication point of view, platelets act as mobile transmitters, endothelial cells are fixed receivers, sticky to the vessel walls, and the transmitted signal is made of bursts of molecules emitted by platelets. The simulator allows evaluating the channel latency and the footprint on the vessel wall of the transmitted signal as a function of the transmitter distance from the vessels wall, the signal strength, and the receiver sensitivity.
Establishing digital molecular communications in blood vessels
Luca Felicetti,Mauro Femminella,Gianluca Reali
Computer Science , 2013,
Abstract: In this paper we propose a solution for transmitting digital information within the cardiocirculatory system. In particular, we make use of a channel delivering burst of molecules, emitted by mobile transmitters, which diffuse in the blood towards fixed receivers, that are attached to the vessel walls. This communication scheme has been inspired by the real signaling between platelets and endothelial cells, the behavior of which has been investigated experimentally. We thus believe that our proposal can be successfully deployed in living bodies. On the basis of the results achieved through simulations on the communication system capabilities, we propose a simple but effective receiver scheme, and we outline the future research directions.
Competências do pedagogo: uma perspectiva docente = Competencies of pedagogue: one faculty perspective
Morosini, Marília Costa,Cabrera, Alberto F.,Felicetti, Vera Lucia
Educa??o , 2011,
Abstract: Este artigo tem como foco a identifica o de competências e indicadores exigidos à forma o de qualidade do pedagogo, a fim de que ele possa responder às necessidades que imperam no meio educacional e na sociedade. A partir de estudos do corpo docente da Faculdade de Educa o da PUCRS e de um professor visitante, Dr. Alberto Cabrera, a pesquisa teve como metodologia basilar grupos focais de docentes. Considerando que o Estado Brasileiro regula, avalia e supervisiona os cursos de gradua o, partiu-se do estudo das Diretrizes Curriculares Nacionais, do Conselho Nacional de Educa o – CNE, para os cursos de Pedagogia, e, em nível institucional, do Projeto Político Pedagógico – PPP – do curso de Pedagogia da PUCRS. Como resultado, foram identificadas cinco competências: conhecimento da área de atua o, a o didático-pedagógica, a o investigativa, gest o de processos educativos e exercício da cidadania. Nessa fase da pesquisa, merece destaque a metodologia utilizada, que imbrica o nacional com o local e a percep o dos docentes do curso sobre a legisla o determinante, num processo de constru o compartilhada. This paper focuses on the identification of competencies and indicators required for the quality training of teacher so that he/she can meet the needs that demand in the educational environment and society as a whole. From the studies of the faculty of the College Education/PUCRS, and a visiting professor, the research methodology used was basically focus groups consisting of teachers. Considering that the Brazilian State regulates, supervises and evaluates the degree courses, we started studying the National Curriculum Guide for courses in pedagogy and the PPP – Political Pedagogical Project Course Pedagogy of PUCRS. As a result, five competencies were identified: knowledge of the area of operation; didactic and pedagogical action; investigative action, management of educational processes, and citizenship. Noteworthy is the methodology used which links the national and local educational bases with the teachers’ perception about the official legislation, through a process of shared construction.
Parity-dependent State Engineering and Tomography in the ultrastrong coupling regime
S. Felicetti,T. Douce,G. Romero,P. Milman,E. Solano
Physics , 2014, DOI: 10.1038/srep11818
Abstract: Reaching the strong coupling regime of light-matter interaction has led to an impressive development in fundamental quantum physics and applications to quantum information processing. Latests advances in different quantum technologies, like superconducting circuits or semiconductor quantum wells, show that the ultrastrong coupling regime (USC) can also be achieved, where novel physical phenomena and potential computational benefits have been predicted. Nevertheless, the lack of effective decoupling mechanism in this regime has so far hindered control and measurement processes. Here, we propose a method based on parity symmetry conservation that allows for the generation and reconstruction of arbitrary states in the ultrastrong coupling regime of light-matter interactions. Our protocol requires minimal external resources by making use of the coupling between the USC system and an ancillary two-level quantum system.
Photon transfer in ultrastrongly coupled three-cavity arrays
S. Felicetti,G. Romero,D. Rossini,R. Fazio,E. Solano
Physics , 2013, DOI: 10.1103/PhysRevA.89.013853
Abstract: We study the photon transfer along a linear array of three coupled cavities where the central one contains an interacting two-level system in the strong and ultrastrong coupling regimes. We find that an inhomogeneously coupled array forbids a complete single-photon transfer between the external cavities when the central one performs a Jaynes-Cummings dynamics. This is not the case in the ultrastrong coupling regime, where the system exhibits singularities in the photon transfer time as a function of the cavity-qubit coupling strength. Our model can be implemented within the state-of-the-art circuit quantum electrodynamics technology and it represents a building block for studying photon state transfer through scalable cavity arrays.
Intensive Rehabilitation Treatment in Parkinsonian Patients with Dyskinesias: A Preliminary Study with 6-Month Followup
Giuseppe Frazzitta,Micaela Morelli,Gabriella Bertotti,Guido Felicetti,Gianni Pezzoli,Roberto Maestri
Parkinson's Disease , 2012, DOI: 10.1155/2012/910454
Abstract: A major adverse effect of levodopa therapy is the development of dyskinesia, which affects 30–40% of chronically treated Parkinsonian patients. We hypothesized that our rehabilitation protocol might allow a reduction in levodopa dosage without worsening motor performances, thus reducing frequency and severity of dyskinesias. Ten Parkinsonian patients underwent a 4-week intensive rehabilitation treatment (IRT). Patients were evaluated at baseline, at the end of the rehabilitation treatment and at 6-month followup. Outcome measures were the Unified Parkinson’s Disease Rating Scale Sections II, III, and IV (UPDRS II, III, IV) and the Abnormal Involuntary Movement Scale (AIMS). At the end of the IRT, levodopa dosage was significantly reduced ( ), passing from to ?mg/day. All outcome variables improved significantly ( all) by the end of IRT. At followup, all variables still maintained better values with respect to admission ( all). In particular AIMS score improved passing from at admission to at discharge and to at followup. Our results suggest that it is possible to act on dyskinesias in Parkinsonian patients with properly designed rehabilitation protocols. Intensive rehabilitation treatment, whose acute beneficial effects are maintained over time, might be considered a valid noninvasive therapeutic support for Parkinsonian patients suffering from diskinesia, allowing a reduction in drugs dosage and related adverse effects. 1. Introduction A variety of drugs have been developed in the last fifty years and are currently used to control the disability related to Parkinson’s disease (PD): levodopa, dopamine-agonists, monoaminoxidase B inhibitors, catechol- -methyltransferase inhibitors. A major limiting factor in levodopa therapy is the development of motor complications, in particular dyskinesia, which affects 30–40% of chronically treated PD patients [1]. Dyskinesias can improve by reducing the dopaminergic therapy, but it is usually cumbersome to decrease the levodopa dosage since this reduction elicits a worsening of motor symptoms: an increased bradykinesia, an increased “off time,” a reduction of motor performance, and autonomy in daily activities. In the last decade, a considerable number of studies have shown that exercise is effective in improving gait, balance, freezing, and motor performance in PD. In particular, recent studies on animals allow hypothesizing a direct action of physical activity on the mechanisms responsible for dyskinesias [2, 3]. In this study we present preliminary data on the effectiveness of intensive rehabilitation treatment
Exercise-induced up-regulation of MMP-1 and IL-8 genes in endurance horses
Katia Cappelli, Michela Felicetti, Stefano Capomaccio, Camillo Pieramati, Maurizio Silvestrelli, Andrea Verini-Supplizi
BMC Physiology , 2009, DOI: 10.1186/1472-6793-9-12
Abstract: In this study, the molecular mechanisms involved in the response to acute and strenuous exercise were investigated using peripheral blood mononuclear cells (PBMCs).Quantitative real-time PCR (qRT-PCR) was used to detect modifications in transcription levels of the genes for matrix metalloproteinase-1 (MMP-1) and interleukin 8 (IL-8), which were derived from previous genome-wide expression analysis. Significant up-regulation of these two genes was found in 10 horses that had completed a race of 90–120 km in a time-course experimental design.These results suggest that MMP-1 and IL-8 are both involved in the exercise-induced stress response, and this represents a starting point from which to understand the adaptive responses to this phenomenon.It is widely accepted that moderate physical activity may have beneficial effects on the overall health of humans and other animals, while strenuous physical effort induces an inflammation-like state, whose grade depends on the type, intensity and duration of the activity [1,2]. The molecular mechanisms that underlie the cellular response to this phenomenon are still unclear; however, it is well known that it involves the coordinated action of multiple organ systems. The process begins with disruption of the homeostasis of the neuroendocrine-immune system, which alters the concentrations of neurotransmitters, hormones and cytokines. Exercise is followed by an intensity-dependent increase in sympathetic activity, which involves activation of the hypothalamus-pituitary axis. This leads to systemic secretion of catecholamines, which influence various immunological processes, including lymphocyte proliferation and differentiation, and production of cytokines [3,4]. Knowledge of the molecular mechanism of acute exercise-induced stress is a fundamental prerequisite for the planning of appropriate training schedules to improve the performance and maintain the welfare of the athlete.Like a human marathon runner, the endurance horse under

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