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Search Results: 1 - 10 of 74127 matches for " Maria Luisa Rastello "
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Absolute Calibration of Analog Detectors by using Parametric Down Conversion
Giorgio Brida,Maria Chekhova,Marco Genovese,Alexander Penin,Maria Luisa Rastello,Ivano Ruo-Berchera
Physics , 2007,
Abstract: In this paper we report our systematic study of a promising absolute calibration technique of analog photo-detectors, based on the properties of parametric down conversion. Our formal results and a preliminary uncertainty analysis show that the proposed method can be effectively developed with interesting applications to metrology.
Absolute Quantum Efficiency Measurements by Means of Conditioned Polarization Rotation
Giorgio Brida,Maria Chekhova,Marco Genovese,Marco Gramegna,Leonid Krivitsky,Maria Luisa Rastello
Physics , 2005,
Abstract: We propose a new scheme for measuring the quantum efficiency of photon counting detectors by using correlated pho-tons. The measurement technique is based on a 90 rotation of the polarization of one photon member of a correlated pair produced by parametric down-conversion, conditioned on the detection of the other correlated photon after polarization selection. We present experimental results obtained with this scheme.
Detection of multimode spatial correlation in PDC and application to the absolute calibration of a CCD camera
Giorgio Brida,Ivo Pietro Degiovanni,Marco Genovese,Maria Luisa Rastello,Ivano Ruo-Berchera
Physics , 2010, DOI: 10.1364/OE.18.020572
Abstract: We propose and demonstrate experimentally a new method based on the spatial entanglement for the absolute calibration of analog detector. The idea consists on measuring the sub-shot-noise intensity correlation between two branches of parametric down conversion, containing many pairwise correlated spatial modes. We calibrate a scientific CCD camera and a preliminary evaluation of the statistical uncertainty indicates the metrological interest of the method.
The Relationship of Positive Affect with Resilience and Self-Efficacy in Life Skills in Italian Adolescents  [PDF]
Elisabetta Sagone, Maria Luisa Indiana
Psychology (PSYCH) , 2017, DOI: 10.4236/psych.2017.813142
Abstract: The main purpose of this study was to analyze the relationships of positive affect with dimensions of resilience and perceived self-efficacy in life skills in a sample of 147 Italian healthy adolescents. We used the Positive and Negative Affect Schedule (PANAS), the Resiliency Attitudes and Skills Profile (RASP), and the Perceived Self-Efficacy Scales in Life Skills. Statistical analyses indicated that adolescents with high positive affect reported higher levels of perceived self-efficacy in life skills than those with low positive affect; in addition, adolescents with high positive affect reached higher levels of resilience (that is, adaptability and engagement) than those with low positive affect. Given the relationship of positive affect both with dimensions of resilience and perceived self-efficacy in life skills, future investigations could better understand the functioning of protective factors actively engaged in facing up to the transition from childhood to adolescence, in line with the flourishing approach in supporting the promotion of psychological well-being and the increasing of individual’s bio-psycho-social skills.
A study of the size of snow particles in powder snow avalanches
Marie Rastello
Physics , 2007,
Abstract: In this work, we study the size of the particles involved in a powder snow avalanche phenomenon. To determine these sizes, we study all the phenomena the particles have to face before arriving in the "body" of the avalanche. We study the boundary layer which is at the bottom of the avalanche. We determine, with the help of experimental data, the range of size of the particles that can be entrained by the avalanche. We then examine the possibility for these particles to reach the top of the boundary layer, and so to take part in the avalanche. Our final result is that the more frequent particles suspended in a powder snow avalanche have a size lower than 200 micrometers.
Plant?o psicológico, universidade pública e política de saúde mental
Schmidt, Maria Luisa Sandoval;
Estudos de Psicologia (Campinas) , 2004, DOI: 10.1590/S0103-166X2004000300003
Abstract: this study analyzes the psychological practice in the context of university's crises and the dismount of public mental health services in s?o paulo. it defines the psychological emergency practice and put in evidence the actual empiric panorama due to the health public policy neo-liberal innovations. it presents and discusses the public university modernization and its influence on the university services. finally, it outlines some university services' proposes to face up the crises' situation , specially the psychological emergency practice.
Pesquisa participante e forma??o ética do pesquisador na área da saúde
Schmidt,Maria Luisa Sandoval;
Ciência & Saúde Coletiva , 2008, DOI: 10.1590/S1413-81232008000200014
Abstract: the present article discusses ethics concept as dwell and way of dwelling, aiming to articulate it with some elements of participative research from an ethnographic matrix. mainly, it focuses the idea of the ethical subject's autonomy, associating it with self-reflection and alterity in ethnography. yet, it approaches the participative research in an ethnographic perspective as a praxis that induces to health researcher's ethical formation.
Avalia??o acadêmica, ideologia e poder
Schmidt, Maria Luisa Sandoval;
Psicologia USP , 2011, DOI: 10.1590/S0103-65642011005000017
Abstract: the article discusses the academic evaluation in the context characterized by high productivity. as an introduction, examines the episode of the unproductive list, which ocurred at usp in 1988, trying to point out some trends of the debate on evaluation at the time. it then presents, in general, ideas that constitute the productivist ideology and examines its implications in the construction of a national evaluation system in brazil. finally, consider the effects of this system in academic work, taking as reference publication requirements in the evaluation process.
Pesquisa participante: alteridade e comunidades interpretativas
Schmidt, Maria Luisa Sandoval;
Psicologia USP , 2006, DOI: 10.1590/S0103-65642006000200002
Abstract: this article presents a set of problems led to research, which seeks the cooperation of individuals, groups and community groups, whose experience, personal and collective, we want to know. based on ethnographic standards of the participative research on anthropology, it focuses on the field research policy and ethics as an identities/alterities dialog and their nexus with the construction of interpretative communities.
Utopia, teoria e a??o:: leitura das propostas grupais na abordagem centrada na pessoa
Schmidt, Maria Luisa Sandoval;
Psicologia: Ciência e Profiss?o , 2011, DOI: 10.1590/S1414-98932011000300014
Abstract: this essay analyzes carl rogers’ contributions and vision issues about groups, the conceptions of group meeting and community meeting and the scopes of their practices, locating them in relation to the history of the person centered approach constitution, as well as to the concepts of power and politics developed by rogers from the psychotherapy focused on the client. from the explicitness of the plot ideas and group practices is then derived an interpretation of the presence of utopia and ideology in the rogerian thought. this interpretation is relative to the constructive and negative aspects of utopia and ideology in its relations of opposition and complementarity, as conceptualized by paul ricoeur.
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