Sviluppo di sensori di portata per gas per applicazioni in campo aerospaziale

Nel corso degli ultimi anni si è osservata, da parte degli enti di ricerca spaziale, una tendenza sempre più marcata alla progettazione di satelliti con propulsori operanti nel campo delle microspinte. Molte missioni, che sono in fase di definizione e che a breve vedranno la luce, necessiteranno infatti del posizionamento del satellite entro margini strettissimi e la compensazione anche dei più flebili disturbi d’assetto. In questo lavoro di tesi si è focalizzata l’attenzione su due particolari aspetti del controllo preciso del propellente. Lo sviluppo di un sensore ad elevata sensibilità per la rivelazione di bassi flussi e di una interfaccia di lettura che introduca il minor rumore possibile

La autonomía de la voluntad : otro punto de convergencia entre el Derecho y la Economía

El Análisis Económico del Derecho da a la autonomía de la voluntad un nuevo enfoque. Así el Teorema de Coase revaloriza la autonomía de voluntad en tanto entiende que nadie podrá dar a las partes una respuesta mejor de la que ellas puedan darse a sí mismas. En la actualidad algunos sostienen que es necesario asegurar la vigencia de la autonomía de la voluntad y la libertad de mercado a fin de asegurar las inversiones extranjeras. Frente a esta postura extrema reconocemos que además de la autonomía de la voluntad y de la libertad de mercado también se debe proteger al otro pilar de la economía de mercado que es el intercambio que debe ser libre, voluntario y capaz de satisfacer todos los intereses en juego.Fil: Tavano, María Josefina. Universidad Nacional de Cuyo. Facultad de Ciencias Económica

Social movements and kirchnerism: the case of the “Organización Barrial Tupac Amaru” (2003-2015)

Durante las últimas dos décadas, las teorías acerca de movimientos sociales en América Latina se han volcado a interpretar los complejos vínculos con las esferas políticas institucionales, en relación con las transformaciones sociales y políticas atravesadas por los estados nacionales, los partidos políticos y la participación ciudadana en general a través de sus diversas organizaciones durante la transición democrática.Uno de los casos que permite problematizar estas dimensiones en la nueva coyuntura regional, es el de la Organización Barrial Tupac Amaru, un movimiento social y político que se originó hacia finales de la década de los noventa en la ciudad de San Salvador de Jujuy (Argentina). A la luz de este caso, se pretende dar cuenta de las transformaciones en el régimen político de gobierno en la Argentina, durante la última década, a la par de los cambios manifestados en la movilización social del país y la región.During the last two decades, the theories on latin-american social movements have been interpreting the complex relations between these movements and the political institutional spheres, in connection with the social and political transformations of the national states, the political parties, and the citizens' participation through their diferent organizations during the transition to democracy. One of the collective action cases that offers the posibility to introduce these dimentions in the new regional conjuncture is the Organización Barrial Tupac Amaru, a social and political movement initiated at the end of the 20th century in San Salvador de Jujuy (Argentina). In light of this case, the objective is to account for the transformations in the political regime of the Argentinian government during the last decade, in paralell with the changes manifested in the social movilization of the country and the region.Fil: Tavano, Carolina Sofia. Universidad Nacional de Mar del Plata. Facultad de Humanidades. Departamento de Sociologia; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata; Argentin

Humor creation and appreciation as an indicator of intercultural communication effectiveness : toward a theoretical model

A review of the theoretical and empirical literature from the field of humor and from that of intercultural communication showed that no investigations dealt with the possibility that a sense of humor might serve as an indicator of intercultural communication effectiveness. This study was conducted in order to assess that possibility. This paper has set out to answer the following questions: What cognitive processes are common to a sense of humor and to intercultural communication effectiveness? What does one\u27s ability to create and appreciate humor say about that individual\u27s potential for intercultural communication effectiveness? Through the review of the literature, specific connections were suggested as theoretical connecting points or parallels. The processes suggested as common to humor and intercultural communication included the following: the ability to note difference; the ability to note and appreciate incongruity; the ability to process information both analytically and synthetically; the ability to shift frame of reference; the ability to perceive, communicate and maintain multiple perspectives; a tolerance for ambiguity; the possession of an internal locus of control; and the ability to act and react appropriately to others and to context. In an attempt to develop a theoretical link between these processes considered crucial to a sense of humor and to intercultural communication effectiveness, cognitive complexity theory was examined. Through this examination it was found that the cognitively complex individual possessed qualities and abilities consistent with those which had been found to be typical of people with a sense of humor and with people considered to be effective intercultural communicators. This suggested that cognitive complexity could serve as the theoretical tool by which a sense of humor may be seen as an indicator of intercultural communication effectiveness

Processing scalar implicature: What can individual differences tell us?

There is much current debate about processing scalar implicature, but a considerable body of empirical evidence seems to support the idea that it requires additional time and effort on the part of the hearer (e.g. Breheny, Katsos and Williams 2005, Bott and Noveck 2004 and many others). The goal of this study was to contribute to our understanding of the cognitive processes that go on as comprehenders process sentences with and without scalar implicatures. We conducted a visual-world eye-tracking experiment using a picture-verification task, with a novel single-picture display, and asked participants to indicate whether the picture they saw was a good description of the sentence they heard. As a whole, our results suggest that processing scalar implicatures does appear to entail a processing cost. In this paper, however, we take a closer look at a pattern which has also been obtained in several previous experiments (e.g. Noveck 2001, Noveck and Posada 2003), namely, the tendency for participants to split into two distinct kinds of responders in the presence of underinformative descriptions. An example of an underinformative description is “Some giraffes have long necks”, which is not a sufficient description of the reality that all giraffes have long necks. Existing research suggests that adults respond to underinformative sentences either using a consistent logical interpretation (e.g. “some” always means “some and possibly all”, and thus “Some giraffes have long necks” is judged to be true) or a consistent pragmatic interpretation involving a scalar implicature (e.g. “some” always means “some but not all”, and thus “Some giraffes have long necks” is judged to be false). Although it is widely assumed that participants’ answers reflect their on-line processing (i.e., a logical response means that no implicature was computed, a pragmatic response means that the implicature was computed), our data suggest that participants are aware of scalar implicature regardless of how they respond to underinformative sentences, and in some cases, greater processing can be demonstrated for participants who answer “logically”. We further suggest that the emergence of participant response groups may be due to participants’ sense that they should be consistent within an experimental context, rather than a difference in how underinformative items are interpreted

Social capital, local communities and culture-led urban regeneration processes: the Sydney Olympic Park experience

Culture has become increasingly important in regeneration processes designed to deal with urban futures. Urban regeneration processes in which culture has played a prominent role range from large-scale public investments in cultural facilities and artefacts as `hallmarks of urban regeneration projects (e.g. Guggenheim Bilbao), through to the use of `one shot cultural events such as the Olympic Games as a catalyst and engine for regenerating urban areas. The aim of this paper is to examine the association between social capital (SC), local communities and the culture-led regeneration process at Sydney Olympic Park (SOP), New South Wales, Australia. The catalyst for the transformation of an industrial wasteland into SOP was the awarding of the Olympics to Sydney in 1993. A convenience sample of 47 professional reports associated with the regeneration process at SOP between 1993 and 2010 were analyzed, the aim being to understand how local communities had been linked to the regeneration process through SC. Results from the analysis identified three principal associations between SC, local communities and the ongoing SOP regeneration process. The first association related to how, during the early years of the regeneration process, SC was used as a means of expressing concern about how governance mechanisms implemented at SOP might adversely impact the ability of local communities to engage in decision making that affected their local environment

Two attentive strategies reducing subjective distortions in serial duration perception

Humans tend to perceptually distort (dilate/shrink) the duration of brief stimuli presented in a sequence when discriminating the duration of a second stimulus (Comparison) from the duration of a first stimulus (Standard). This type of distortion, termed “Time order error” (TOE), is an important window into the determinants of subjective perception. We hypothesized that stimulus durations would be optimally processed, suppressing subjective distortions in serial perception, if the events to be compared fell within the boundaries of rhythmic attentive sampling (4–8 Hz, theta band). We used a two-interval forced choice (2IFC) experimental design, and in three separate experiments tested different Standard durations: 120-ms, corresponding to an 8.33 Hz rhythmic attentive window; 160 ms, corresponding to a 6.25 Hz window; and 200 ms, for a 5 Hz window. We found that TOE, as measured by the Constant Error metric, is sizeable for a 120-ms Standard, is reduced for a 160-ms Standard, and statistically disappears for 200-ms Standard events, confirming our hypothesis. For 120- and 160-ms Standard events, to reduce TOEs it was necessary to increase the interval between the Standard and the Comparison event from sub-second (400, 800 ms) to supra-second (1600, 2000 ms) lags, suggesting that the orienting of attention in time waiting for the Comparison event to onset may work as a back-up strategy to optimize its encoding. Our results highlight the flexible use of two different attentive strategies to optimize subjective time perception

Well-Being in Alpine Space: How Subjective Determinants Affect Urban and Rural Areas. A Case Study Analysis in South Tyrol, Italy

The paper analyzes urban-rural difference on the individual psychological well-being of residents living in the Autonomous Province of Alto Adige, region on the border between Italy and Austria. Data comes from a cross-sectional survey undertaken in 2010 on a statistical representative sample, based on the PGWBI, an instrument specifically used to measure individual subjective well-being. The study examines the influence of socio-demographic factors, as well as cultural determinants, on the PGWBI. Urban inhabitants were found to perceive higher level of psychological well-being compared to rural ones, while the determinants affecting individual subjective had a greater impact on the rural one