88 research outputs found
Le Tre redazioni di un dramma inedito di Remigio Zena: Analisi degli strati correttori
No full textThe present study focuses on a juvenile drama by Remigio Zena, L\u27ombra, transmitted by three manuscripts which bear three distinct drafts: the objective of the investigation is to establish the chronological order of the documents and to identify, through the methods of the authorial philology, the various corrective stratus that followed one another in the passage from the initial draft to the definitive one. The contribution closes with an interpretative analysis of each of the identified corrective phases, with the aim of probing each passage of the author\u27s work by the interpretation of the variants in order to understand the reasons and the direction of the corrective movement.The present study focuses on a juvenile drama by Remigio Zena, L\u27ombra, transmitted by three manuscripts which bear three distinct drafts: the objective of the investigation is to establish the chronological order of the documents and to identify, through the methods of the authorial philology, the various corrective stratus that followed one another in the passage from the initial draft to the definitive one. The contribution closes with an interpretative analysis of each of the identified corrective phases, with the aim of probing each passage of the author\u27s work by the interpretation of the variants in order to understand the reasons and the direction of the corrective movement.The present study focuses on a juvenile drama by Remigio Zena, L\u27ombra, transmitted by three manuscripts which bear three distinct drafts: the objective of the investigation is to establish the chronological order of the documents and to identify, through the methods of the authorial philology, the various corrective stratus that followed one another in the passage from the initial draft to the definitive one. The contribution closes with an interpretative analysis of each of the identified corrective phases, with the aim of probing each passage of the author\u27s work by the interpretation of the variants in order to understand the reasons and the direction of the corrective movement.L’articolo si sofferma su un testo teatrale giovanile di Remigio Zena, L’ombra, testimoniato da tre manoscritti che ne recano tre distinte redazioni: l’obiettivo dell’indagine è quello di stabilire l’ordine cronologico dei testimoni e individuare, attraverso le metodologie della filologia d’autore, i vari strati correttori che si susseguirono nel passaggio dalla stesura iniziale a quella definitiva. Il contributo si chiude con un’analisi interpretativa di ognuno degli strati correttori individuati, con lo scopo di scandagliare ogni passaggio del lavoro di Remigio Zena attraverso la critica delle varianti e comprendere le ragioni e la direzione del movimento correttorio
Time and Perspective. Question of Revolution Today
No full textU ovom se članku autor osvrće na knjigu Massimiliana Tombe Strati di tempo. Karl Marx materialista storico (Jaca Book, Milano 2010.), razmatrajući je u širem konceptualno-filozofskom, kulturno-povijesnom i socijalno-političkom kontekstu. Kako u Tombinoj studiji, tako i u ovom tekstu, naglasak je na misaonoj ostavštini Karla Marxa, prvenstveno na historijskom materijalizmu, koji predstavlja okvir za promišljanje vremena, historije i (mogućnosti) revolucije te stanja suvremene ljevice.In this article the author reviews the book Strati di tempo. Karl Marx materialista storico (Jaca Book, Milano 2010) by Massimiliano Tomba, reconsidering it in a wider conceptual-philosophical, cultural-historical, and social-political context. Just like Tomba in his study, the author emphasizes the thoughts of Karl Marx, especially historical materialism, which represents a framework for rethinking the time, the history, and the (possibility of) revolution, as well as the state of the left today
Trust and Exchange : Effects of Temporal Embeddedness and Network Embeddedness on Providing and Dividing a Surplus
No full textDissertation of the University of Utrecht
Mutually profitable cooperation is characterized by the fact that the combined efforts of the cooperating parties generate a certain surplus. The first part of the book studies the production of a surplus as a trust problem between two actors. Should an actor provide resources if the other actor can decide on the division of the surplus if it materializes? Under which conditions is trust in a reasonable division of the surplus warranted? We study the effects of `temporal embeddedness'. If both actors interact repeatedly, they can learn something about the other actor's trustworthiness from past interactions. And, they can control their relation by facilitating or hampering future exchange in which both actors should be interested. The first part of the book studies the effects of such `temporal embeddedness' on the provision of a surplus between two actors. Hypotheses are derived on the basis of a simple social capital stock model. These hypotheses are tested using experiments as well as survey data.
The second part of the book studies the division of a given surplus. We consider the case where actors are embedded in a network structure and connected actors can engage in dyadic negotiations on the division of a surplus. We show how the actors' network embeddedness determines their success in bargaining. We thus provide predictions on the actors' shares of their surpluses from bilateral negotiations with their partners. Further, we specify conditions for a decay of a negotiation structure into substructures by showing that it is sometimes favorable for an actor not to utilize possible negotiation ties. Predictions on the division of a surplus and on `network breaks' are tested using evidence from laboratory experiments.
Experimental and theoretical characterisation of short pulse X ray lasers
No full textSince the demonstration in 1984 of x-ray laser action in Ne-like Se at 20.6 and 20.9 nm, much experimental and theoretical effort has been ongoing to investigate different lasing schemes. Aims in this research include improving pumping efficiency, beam quality and overall energy output of the demonstrated x-ray lasers and the production of lasing at shorter wavelengths. The envisaged and demonstrated applications of x-ray lasers utilise their short wavelength, high brightness and coherence. Examples of potential applications include x-ray imaging and holography of biological materials in the water window region (2.3 - 4.4 nm), x-ray photolithography for the fabrication of microcircuits and structures below the micron scale and x-ray interferometry, deflectometry and radiography of dense plasma environments of interest in inertial confinement fusion and astrophysics. Soft x-ray laser action has been demonstrated in various plasma active media with wavelengths ranging from 3.5 nm to 40.0 nm and above. However, such lasers require access to large scale pumping laser facilities, with obvious restrictions in their general deployment. Recently there has been an increasing interest in the development of so-called 'table-top scale' x-ray lasers with the goal to provide widespread access to such devices. Table-top x-ray lasers use low energy short pulses (less than or of the order of a ps) to pump the x-ray laser transition. Tills thesis deals principally with the experimental and theoretical investigation of x-ray laser action using short pulse optical laser pumping in the Transient Collisional Excitation regime (TCE) and of the efficiency of the travelling-wave (TW) pumping technique used in its realisation. Along with the inherent and important interest in studying the physics of such an approach to x-ray lasing, this scheme shows potential application for 'table-top' x-ray laser devices with wavelengths in the region of 10.0 - 20.0 nm. We present recent experimental results demonstrating the Ne-like Ge laser at 19.6 nm and the Ni-like Sm laser at 7.3 nm operated in the transient collisional excitation regime. The two x-ray lasers have been operated successfully in saturation with relatively low pump energy requirements. The effects of travelling-wave pumping efficiency on the Ge 19.6 nm energy output have been investigated experimentally with pumping travelling wave velocities of 1 c and 3 c, where c is the speed of light in vacuum. The optimisation of the pumping laser configuration has been investigated and compared to theoretical predictions. We derive a simple analytical model to quantify experimental results on the efficiency of the travelling-wave pumping of x-ray lasers. Finally, we present experimental results regarding the temporal duration as well as a general characterisation of the 13.9 nm Ag Ni-like soft x-ray laser pumped in transient collisional excitation. (author)Available from British Library Document Supply Centre- DSC:DXN055041 / BLDSC - British Library Document Supply CentreSIGLEGBUnited Kingdo
Giovanni Pascoli. Canis: dall'ideazione alla composizione (frasi e varianti)
No full textThis project stems from the curiosity aroused by the search Canis poem around the turn in my thesis on odors in Latin poetry of Giovanni Pascoli. The discovery of the low esteem in which literary criticism has taken the poem and the lack of specific studies on it, suggested a thorough analysis of this text and its genesis from the transcription of manuscripts.
The initial stages of the project were devoted to the recognition of the paper containing the poem Pascoli and their photographic reproduction from the original kept at the Archive of House Castelvecchio Pascoli Barga, then moved on to reading (not always easy to decipher handwriting Pascoli) and transcription of the material, which allowed the reconstruction of a likely logical and chronological order of the cards and steps in the sequence of variations. For all stages of composition was done by an analytical comparison with the data of traditional Latin language, poetry and non-classical and, through the use of glossaries and indexes. This could highlight the substantial homogeneity of language Pascoli with the Latin tradition and, often, this survey has revealed relations with certain or probable "sources" of old, which revealed a "complicity" between the model and author of the novel new work.
Therefore, this work aims to act as a first step, preliminary to a comment by Canis that today is completely missing, and that would complement and pastures alongside the analysis of "scientific" and Darwinist already under way by Patrick Paradisi Pecudes with his comment: As the scholar, in fact, Canis itself as the natural continuation of Pecudes because it "uses the same matrix Lucretius (the man at the dawn of civilization).
And 'So this, the first, essential step for the exegesis and interpretation, which allows us to put the poem graze in organic framework of the entire literary production in Latin America and organic picture of the life of Pascoli, deserves, in fact, further study perhaps not an issue and assume that indirectly can be seen from reading the poem at issue here: the particular relationship that is already clear from reading the biography of Mary, between Pascoli (man from the 'soul Franciscan) and his dog , Gulì, which may have inspired the poet's will celebrate the origins of the animal by tying a double knot and the figure of "making it also the subject of epic-story home.
Logick in Pieces: a Stratigraphic Conversation in Woolf’s Diary
No full textIn this paper I contend that Virginia Woolf is not merely keeping records of her holidays in her Warboys Diary of 1899 but is also introducing a complex form of conversation within the narrative. The author opens the frontiers of everyday writing to a conversation with a potential reader, and undertakes a literary conversation with other genres. Additionally she creates a process of material conversation with an eighteenth-century book, thus transforming her diary into an ‘art object’ and autobiographical writing into an ‘auto-strati-graphy’
Leading Beautifully: How Mastery, Congruence and Purpose Create the Aesthetic of Embodied Leadership Practice
No full textThis paper explores the territory of leading as an embodied activity through the
lens of the aesthetic category of ‘the beautiful’. Its starting point is that
although much of the literature about effective leadership practice focuses on
leadership behaviours, little is written about the way in which those behaviours
are actually enacted. The musician, Bobby McFerrin serves as a case study for
identifying three key aspects of leading beautifully: mastery, congruence
between form and content, and purpose. These are further considered through
reference to the concept of beauty as theorised by the philosophers Plato and
Plotinus. The paper then considers how ‘leading beautifully’ might differ from
other conceptualisations of leadership and discusses the particular insight it
brings to understanding the nature of leading as a relational ph
A rational approximation to the evolution of a free surface during fluid withdrawal through a point sink
No full textThe time varying flow in which fluid is withdrawn from a reservoir through a point sink of variable strength beneath a free surface is considered. Asymptotic techniques are used to derive an approximate solution to the flow that is valid at intermediate times, giving a simple rational approximation to track changes in the free surface for any temporal variations in the sink strength. Comparisons with numerical simulations are given, showing that the approximation has wide applicability
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Development and validation of a combustion model for a fuel cell off-gas burner
No full textA low-emissions power generator comprising a solid oxide fuel cell coupled to a gas
turbine has been developed by Rolls-Royce Fuel Cell Systems. As part of the cycle, a
fraction of the unreacted fuel (the off-gas) and oxidizer streams is reacted in a burner,
which is the main source of pollutant formation. In this thesis a computational model of
the burner has been developed which captures the formation of NOx and the oxidation
of CO. This model gives accurate predictions at low computational cost, making it
suitable for use as a design tool in future burner design optimization through parametric
studies.
A key factor in increasing computational efficiency was the development of a reduced
H2/CO/N2 kinetic mechanism; from a starting mechanism of 30 species to 10 and 116
reactions to 6. The results of laminar opposed-flow diffusion flames have been used to
validate the reduced mechanism.
Several different turbulent combustion models have been evaluated by creating an
interface between the reduced kinetic mechanism and the commercial CFD solver FLUENT. Comparison of model predictions with well-characterized turbulent syngas flames,
which share a similar fuel composition to the experimental work conducted on the off-
gas burner, shows acceptable agreement. These studies have demonstrated the sensitivity of modelling constants. Improved predictions were achieved by calibrating these
constants and including radiative heat losses.
Following suitable modification to reflect the predominantly laminar flow present in
the current burner design, the relevant modelling approaches were applied to the off-
gas burner. Comparison was made to previous detailed measurements, showing that the
important trends of NOx and CO are captured in general. The model was extended to
high pressure conditions, similar to those in the actual off-gas burner, with the emissions
predictions within design limits.
The outcome of this work is a fast, accurate design tool for CFD which has capabilities to simulate beyond the laminar burner studied here. It may be applied to more
general types of off-gas/syngas burners where turbulence-chemistry interaction is expected to be more significant
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