To see the other types of publications on this topic, follow the link: Stratfor.
Dissertations / Theses on the topic 'Stratfor'
Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles
Consult the top 50 dissertations / theses for your research on the topic 'Stratfor.'
Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.
You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.
Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.
1
Haglund, Matilda. "Förnyelsen av Stratford, En studie av stadsförnyelsen av Stratford, London i samband med Sommar OS 2012." Thesis, Stockholms universitet, Kulturgeografiska institutionen, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-100819.
Full textAbstract:
Studien behandlar Stratford, London och syftar till att utifrån olika perspektiv analysera den pågående stadsförnyelsens betydelse för Stratford och dess invånare samt vilken del de Olympiska Spelen haft i stadsförnyelsen. För att undersöka detta fokuserar uppsatsen på att studera konsekvenserna av stadsförnyelsen för faktorer som bostads- och arbetsmöjligheter i området. Det undersöks utifrån frågeställningarna: hur har stadsförnyelsen i Stratford påverkat Stratford och dess invånare, med betoning på arbete och bostad samt på vilka sätt har OS haft betydelse för stadsförnyelsen i Stratford. Studien relaterar till teorier kring gentrifiering och globala städer. Uppsatsen har baserats på semistrukturerade intervjuer, litteraturstudier av dokument från bland annat London Borough of Newham och London Legacy development Corporation samt observation. Huvudsakliga resultat är att stadsförnyelsen inneburit fler bostads- och arbetsmöjligheter men då området till stor del utvecklas för en medelklass indikerar resultatet att de fattigare lokalinvånarna på sikt kommer att tvingas bort från området som är på väg att gentrifieras.
2
Snelling, Anne. "Stratford GM school : a policy and its impact." Thesis, University of Leicester, 2001. http://hdl.handle.net/2381/30983.
Full textAbstract:
The process of decentralization and moves to greater self-management in schools have been part of an international trend for some years. In England and Wales, the most extreme form of self-management was introduced by the Conservative Government which established grant-maintained schools in the 1988 Education Reform Act. It was, arguably, the most controversial development in education policy in this country. The purpose of this thesis is to examine the GM policy, its implementation and impact on practice, through the study of a single grant-maintained school, its struggle for incorporation and its operation during a turbulent period. The subject of the case study is Stratford School in East London, one of the earliest schools to opt out. The research, which draws upon documentary evidence and interviews with governors, staff and pupils, has five areas of focus: the opting-out process, the role of head and governors, relationships with the local education authority, school improvement and parental involvement - choice and diversity. In many respects, the Stratford experience supports the outcomes of other research and mirrors what happened in other GM schools. There are findings from this research, however, which run counter to what took place in most GM schools. The story vividly illustrates how a GM school could go wrong and slide out of control. Yet, despite its many difficulties, the school not only survived to prove its opponents wrong, it flourished, gaining public recognition for its progress and the substantial improvement in pupil achievement. The researcher presents Stratford School as a unique case which throws light on both the GM policy during its ten year life span and the concept of self-management which is still very much on the agenda of both major political parties. It, therefore, is of historical interest and contemporary significance to those interested in self-management in schools.
3
Groome, Margaret E. "Canada's Stratford Festival 1953--1967 : Hegemony, commodity, institution." Thesis, McGill University, 1987. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=75704.
Full textAbstract:
This thesis undertakes a critique of Canada's Stratford Festival as an institutional site of theatre production in the years 1953 through 1967. I propose to identify the major recurring "statements" of the institutional discourse; those statements which were circulated through various printed documents, including commentaries on the Festival and its work and the Festival's public relations material. The exercise of critique reveals that the Festival discourse became a hegemonic discourse, circulating a set of normative and prescriptive understandings as to what should constitute theatre and culture for Canada. The ideology dominating the discourse was that identified by Max Horkheimer and Theodor Adorno by the term the "culture industry." This ideology allowed for the autonomy of the Festival's productions to be eliminated, such that they functioned as commodities in which all capacity for critique has been abrogated.<br>It will be shown that the Festival discourse privileged an aesthetic of spectacle and effect throughout these years, an aesthetic which implied a concept of cultural experiences as passive spectatorship and the easy consumption of effects; in short as commodity. In conjunction with this aesthetic, the discourse registered a concept of culture as affirmative--as an experience which affirms existing social relations in offering an apparent, if false, resolution or catharsis of conflict and of social inequality. When the Festival was identified as proof of Canada's cultural maturity and the focus of the nation's "life of the mind" these values were established as the nation's dominant cultural values. Moreover, this discursive portrayal of the Festival established it as Canada's foremost cultural commodity. And so the discourse simultaneously conveyed a concept of culture and of the Festival as commodities.<br>By the 1960's the Festival was being identified as not simply a leading voice in Canadian culture, but as the institution on which the development of Canadian culture depended, thereby positioning the Festival as hegemonic. The Festival discourse thus articulated the Festival's central duality, its capacity to function as both cultural commodity and authority. The position of the Festival and its discourse as cultural authority ensured that it was the Festival concept of affirmative culture, marked by the displacement of the political, philosophical and existential role of culture, which dominated the discourse on theatre and the wider discourse of Canadian culture. In this respect the Festival failed to offer an active-critical experience which would counter the tendency towards the ethos of spectatorship and passivity which followed from the developing mass media.
4
Finnerty, Paraic M. "'Stratford on Avon - accept us all' : Emily Dickinson's Shakespeare." Thesis, University of Kent, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.342162.
Full text
5
Boccippio, Dennis J. (Dennis Joseph). "The electrification of stratiform anvils." Thesis, Massachusetts Institute of Technology, 1996. http://hdl.handle.net/1721.1/57959.
Full textAbstract:
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, 1997.<br>Includes bibliographical references (p. 225-234).<br>by Dennis J. Boccippio.<br>Ph.D.
6
Vadlovo-Landa, Monique. "Toutes les polarités : traduction de All the polarities de Philip Stratford." Mémoire, Université de Sherbrooke, 1991. http://hdl.handle.net/11143/10067.
Full textAbstract:
La littérature canadienne comparée est une discipline d'origine assez récente. All the Polarities constitue, pourrait-on dire, la suite attendue aux oeuvres de réflexion et d'analyse qui ont pour titre Second Image et Un Héros nouveau de Ronald Sutherland, Butterfly on Rock de D.G. Jones, Configurations de E.D. Blodgett, Essai sur la littérature canadienne de Margaret Atwood, notamment, outre une série déjà fournie d'articles d'Antoine Sirois, de David M. Hayne et de plusieurs autres critiques, dont Philip Stratford lui-même; les remarques formulées par Northrop Frye sur cette question en diverses occasions font également partie de ce corpus. Cet ouvrage s'inscrit donc dans la foulée de ces études marquantes sur les liens qui existent entre les deux littératures du Canada, lesquelles explorent les éléments constitutifs de la littérature canadienne selon diverses optiques. Par exemple, Ronald Sutherland adopte une optique sociocritique dans Second Image. Son collègue, D. G. Jones, s'astreint aussi rigoureusement à une analyse culturelle et psychologique non seulement des thèmes, mais également des images dans des oeuvres poétiques et romanesques de facture anglaise et québécoise, ainsi qu'on peut le constater dans Butterfly on Rock, une des oeuvres maîtresses dans ce genre. Le livre de Philip Stratford prend une place méritée parmi ces ouvrages fondamentaux, car il apporte une autre pierre à l'édifice de la littérature canadienne comparée. Le titre de l'ouvrage en version originale, All the Polarities, paru en 1986, est une expression tirée de Beautiful Losers. Les Perdants magnifiques en version française, roman de Leonard Cohen. L'étude permet de constater assez rapidement, en effet, que la locution traduit un état de fait littéraire du Canada. Pour mener son analyse, Philip Stratford prend six romans québécois et six romans canadiens-anglais dans le dessein de les étudier en comparatiste, d'en tirer des ressemblances et des dissemblances de différentes sortes ayant trait au contenu ou à la forme, enfin de les confronter à divers niveaux d'analyse. Le professeur Stratford s'attache aussi à mettre en relief ce que les carrières des deux écrivains mis en présence dans chaque chapitre peuvent avoir en commun. Son objectif est franchement de comparer le plus grand nombre possible d'éléments, de nous faire saisir de façon concrète comment et pourquoi les deux littératures principales de notre pays se rapprochent ou divergent. [...]
7
Stevens, Courtney A. "Promoting ethical consumption behavior through spaces constructed by collective actions and pre-existing values how Fairtrade Towns establish pathways for participation /." Laramie, Wyo. : University of Wyoming, 2008. http://proquest.umi.com/pqdweb?did=1798967321&sid=1&Fmt=2&clientId=18949&RQT=309&VName=PQD.
Full text
8
Symons, Helen M. L. "Olympic sport and the local community : a sociological study of Stratford, London." Thesis, Loughborough University, 2017. https://dspace.lboro.ac.uk/2134/25309.
Full textAbstract:
London 2012 was the 30th Olympiad, and the third time that London had hosted an Olympic Games. The rationale for hosting the Games was to undertake a large-scale regeneration of Stratford and the East London region. The research explored the experiences of community representatives who live and/or work in East London. The research was inductive and focused on the empirical findings of the research via a sociological lens. Three overarching research themes (urban regeneration, socioculturalism, governance and economics). The original contribution to knowledge relates to the limited amount of research previously conducted which take into account all three of these overarching themes. 19 semi-structured interviews were conducted and analysed alongside official documents and newspapers using narrative thematic analysis and critical discourse analysis. Two main findings emerged from the analysis; Marginal Gains and the Ripple Effect. It is recognised that the positivity found throughout the presented narratives may have been present due to the time period in which the research was undertaken. Future research should focus on whether the time period has an influence on the experiences of community representatives and whether similar (economic and governance) is experienced by future host cities.
9
Caloren, Claire. "La traduction, la critique et la création littéraires : Philip Stratford et Samuel Beckett." Thesis, University of Ottawa (Canada), 1989. http://hdl.handle.net/10393/5848.
Full text
10
Jeffs, Kathleen. "Golden Age Page to Stratford Stage : Rehearsing and Performing the Royal Shakespeare Company's Spanish Season." Thesis, University of Oxford, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.504042.
Full text
11
O'Connor, John. "Shylock : a performance history with particular reference to London and Stratford-upon-Avon 1879-1998." Thesis, University of Birmingham, 1999. http://etheses.bham.ac.uk//id/eprint/1788/.
Full textAbstract:
This thesis charts the performance history of Shakespeare's Shylock from the earliest recorded interpretations to those of the present day . After a survey of the most significant early productions of The Merchant of Venice', starting with Granville's adaptation in 1701, I refer to every major professional production of the play in London and Stratford-upon-Avon from 1879, the year which saw the first performance of Henry Irving’s landmark interpretation of Shylock at the Lyceum and the opening of the Shakespeare Memorial Theatre in Stratford. While many of Shakespeare’s characters hold special challenges for the modem actor, Shylock is unique in the extent to which he is influenced by the weight of history, and by twentieth century European history in particular. There is a focus in this study, therefore, on the changing: sensibilities which have influenced theatrical interpretation of the character through the ages, and especially on the differing extents to which actors have attempted to present Shylock as a sympathetic character. It has not been possible - and neither would it have been proper. in my opinion - to exclude from my study references to the ever-changing manifestations of anti-Semitism in the world outside the theatre, nor to the enduring discomfort which many people still experience at seeing stage representations of Shakespeare's Jew. Accordingly I have included a brief account of the theatre's response at the time of the Nazi persecutions, as well as more recent examples of the controversies that this play has the power to engender. Reflecting upon the ways in which productions have in their different ways met the challenge of presenting Shakespeare's Jew to post-Holocaust audiences, I conclude the study by proposing the notion of 'honest' and ‘dishonest' interpretations.
12
Appleton, Stephanie Jane. "Women and wills in early modern England : the community of Stratford-Upon-Avon, 1537-1649." Thesis, University of Birmingham, 2017. http://etheses.bham.ac.uk//id/eprint/7611/.
Full textAbstract:
This study employs the entire body of surviving wills for Stratford-upon-Avon, 1537-1649, alongside other documentary evidence including ecclesiastical court depositions, local Court of Record proceedings, and minutes and accounts of the town's Corporation, in order to examine aspects of everyday life in this early modern town. In particular, it uses the wills as a lens through which to examine the 'culture of will-making', kinship, affect, and women's legal status and economic opportunities in Stratford. The focus on the town's women provides important additional knowledge which contributes to the growing scholarship on the experiences of non-elite women in England at this time, while its innovative use of the database Nvivo to classify the bequests and naming patterns found in the wills allows for greater nuance in our understanding of how early modern people may have thought and felt about their friends, family, and possessions. Methodologically, the thesis argues for a holistic treatment of the wills, and demonstrates their utility and complexity as a source, while its findings challenge some commonly-held assumptions about the nature of kinship and about the financial dealings and legal opportunities enjoyed by middling sort women in early modern England.
13
Robins, Luke James Montgomery. "The viscous and inviscid Strato-Rotational Instabilities." Thesis, University of Leeds, 2017. http://etheses.whiterose.ac.uk/18751/.
Full textAbstract:
Using computational and analytical methods, we investigate the viscous and inviscid forms of the Strato-Rotational Instability (SRI) for the stratified Taylor-Couette system. We use an eigenfunction solver to find instability modes. We are able to vary the stratification, radius ratio η and rotation-rate ratio µ, and optimise the Reynolds number and relevant wavenumbers. We investigate the viscous and inviscid stability limits, extending the range of instability compared to prior results. Our results are consistent with the findings of Yavneh et al. [2001], Shalybkov and Rüdiger [2005], Le Bars and Le Gal [2007], Rüdiger and Shalybkov [2009], and Ibanez et al. [2016]. Building upon the results of Park and Billant [2013], we demonstrate that the µ < 1 inviscid system is unconditionally unstable if the buoyancy frequency is more than twice the inner cylinder rotation rate. For any given weaker stratification, we provide sufficient conditions for instability upon η and µ. We explore the structure of the SRI’s critical mode throughout the [η, µ]-parameter space, for fixed stratification. The considerable variation in structural appearance suggests that various instability mechanisms exist. We also find closed domain loops, for which the SRI becomes unstable for only a finite range of Reynolds numbers. This phenomenon is associated with a discontinuous change in the critical mode within the [η, µ]-parameter space. We find considerable differences between the viscous and inviscid systems, including a region of the parameter space which for weak stratifications is only unstable in the presence of viscosity. For the SRI to persist as a critical mode in the narrow-gap limit, we show that a near-solid-body-rotation limit is also necessary. This leads to the rotating stratified shear flow system described by Yavneh et al. [2001] for inviscid flows.
14
Reinarz, Jonathan. "The social history of a Midland business : Flower & Sons Brewers, Stratford-upon-Avon, 1870-1914." Thesis, University of Warwick, 1998. http://wrap.warwick.ac.uk/4308/.
Full textAbstract:
This thesis is concerned with brewery workers in England between 1870 and 1914. It deals with most aspects of labour management and workers' experiences, including their recruitment, training, promotion, working conditions, benefits and retirement. Besides being written in a way which mirrors most labourers' working lives, this study is concerned with these institutions during a dynamic period in a particular industry at a specific midland firm. Primarily, it examines working conditions and business practices at Flower & Sons Brewery in Stratford-upon-Avon and the way in which these evolved in relation to certain scientific and technological developments specific to the late nineteenth and early twentieth centuries. Although considering economic and political conditions in their national scope, this study also emphasises the local context of employment and business during this period. Most recent histories of the English brewing industry have examined the state of the trade at the turn of the century, as well as developments in science and technology as they related to the trade. Few, however, have had anything to say about the industry's workers, whether employed in manual or clerical capacities. Consequently, this study is an attempt to fill a noticeable gap in the existing literature. However, unlike past histories of labour, this study considers the experiences of the trade's employees within a business-history framework, while always employing the broadest possible definition of what constitutes a worker. It is through tracing a particular firm's financial and administrative past, together with workers' experiences, roles and duties, that makes this study a social history of a midland business.
15
Chen, Xue Meng. "Retrieval of vertical air motion in stratiform snow: «a case study»." Thesis, McGill University, 2011. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=97020.
Full textAbstract:
This thesis is an attempt to estimate the vertical air motion in stratiform snow region of a case study. The motivation is to search for a better understanding of the interesting precipitation and vertical velocity structure observed for this case by the X-band vertically-pointing radar of McGill University, where particles are decelerating in their fall at several height levels while the reflectivity field suggests an increase of snow mass. Three methods of retrieval of vertical air motion are explored: the adiabatic method that assumes conservation of potential energy and gives an estimation of the synoptic scale air motion; subtraction of fall speed of snow from Doppler vertical velocity measurements, the fall speed estimated from its relationship with two moments of the particle size distribution: radar reflectivity and Doppler velocity; and finally the kinematic method that gives the vertical wind by integration of horizontal divergence assuming air mass continuity. Each method of retrieval brought new elements to the analysis of vertical wind field, in space and in time, and all seem to agree on the observed fluctuations in vertical velocities to be mainly caused by air motion. Results of vertical wind at the large scale, obtained when necessary from retrieved fields by taking the time or spatial average, seem consistent with each other. They could be used as additional information derived from observations in data assimilation analysis systems, and provide a better initial guess of the atmospheric state to numerical models.<br>Dans la présente étude de cas, le vent vertical d'un système stratiforme dans la région de neige est analysé. Au-dessus de la bande brillante, une structure de vitesse verticale ayant plusieurs couches de décélération des particules de neige est observée, aux niveaux même où la réflectivité diminue avec la hauteur, ce qui indique une augmentation de la masse de neige. Dans le but de mieux comprendre les mécanismes dynamiques et microphysiques possiblement impliqués dans la formation de précipitation qui causent ces curieux mouvements verticaux, le vent vertical à différentes échelles est dérivé par trois méthodes : conservation de l'énergie potentielle (la méthode adiabatique); estimation de la vitesse de chute de neige relative au mouvement de l'air à partir de propriétés microphysiques de la neige, pour ensuite la soustraire de la vitesse verticale Doppler mesurée par un radar en bande-X; et intégration en hauteur de la divergence horizontale, appelée la méthode kinématique. S'appuyant sur les résultats des trois méthodes d'estimation de vent vertical, il est suggéré que les fluctuations observées dans la vitesse verticale des particules sont causées principalement par des mouvements d'air. Les profiles de vent vertical à grande échelle, obtenus si nécessaire par moyennes arithmétiques dans le temps et l'espace, semblent être consistents les uns avec les autres. Ceux-ci, en tant qu'information additionnelle dérivée d'observations, pourraient être utiles si incorporés dans des systèmes d'assimilation de données et améliorer l'initialisation de modèles numériques, et pourraient aider les systèmes d'analyse à mieux converger vers la bonne solution.
16
Taylor, Jonathan P. "The remote retrieval of stratiform water cloud radiative and microphysical properties." Thesis, University of Reading, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.357173.
Full text
17
GAGLIANO, GIUSEPPE. "Studio dell'accoppiamento neurovascolare nello strato granulare del cervelletto." Doctoral thesis, Università degli studi di Pavia, 2019. http://hdl.handle.net/11571/1248467.
Full textAbstract:
The neurovascular coupling (NVC) or functional hyperemia is the mechanism whereby neuronal activity controls cerebral blood flow (CBF). The tight coupling between neuronal activation and blood vessels diameter modifications ensures the proper supply of oxygen and nutrients to the central nervous system. In the brain, CBF adaptations are governed by vasoactive agents and their action on the vascular system (Iadecola, 2017). This phenomenon is also involved in the genesis of the blood-oxygen-level-dependent (BOLD) signals used by neuroimaging techniques, like functional magnetic resonance imaging (fMRI), to map changes in brain activity. Although being highly investigated, the interpretation of activity-dependent BOLD responses is widely debated (Hall et al., 2016). The complexity of investigating BOLD neurophysiological basis, i.e. NVC mechanisms, resulted in the inability to define a comprehensive theory for BOLD signals interpretation.
In this work of thesis, the attention was focused on NVC mechanisms in the cerebellum. In this region, NVC has been previously investigated in the molecular layer, where interneurons activation has been found as the main player, unlike Purkinje cells spiking activity (Cauli et al., 2004; Thomsen et al., 2004). Surprisingly, there was no information about the role of the granular layer in cerebellar NVC before our investigations. In the granular layer, NVC is mediated by granule cells through an NMDA receptor/NO-dependent system acting on pericytes (Mapelli et al., 2017). The latter are contractile cells able to regulate the caliber of brain capillaries (Attwell et al., 2016),which are thought to be involved in the genesis of BOLD signals (Hall et al., 2016).
Recent investigations using human fMRI demonstrated that cerebellar vermis lobule V and hemisphere lobule VI showed respectively linear and non-linear BOLD responses during the same motor task performance (Alahmadi et al., 2017). In mouse cerebellar slices, vermis lobule V and hemisphere lobule VI responded with different non-linear neurovascular events to several frequency patterns of neuronal activation, suggesting that NVC and thus BOLD signals might be region-dependent in the cerebellum (Gagliano et al., 2018 in preparation).
In conclusion, granule cells, pericytes and capillaries may drive the basic neurovascular mechanisms of the cerebellum, but different cerebellar regions (vermis and hemisphere) could differently contribute to the genesis of cerebellar BOLD signals. These results might reflect different functions of these cerebellar areas following the same input.
18
GAGLIANO, GIUSEPPE. "Studio dell'accoppiamento neurovascolare nello strato granulare del cervelletto." Doctoral thesis, Università degli studi di Pavia, 2019. http://hdl.handle.net/11571/1248388.
Full textAbstract:
The neurovascular coupling (NVC) or functional hyperemia is the mechanism whereby neuronal activity controls cerebral blood flow (CBF). The tight coupling between neuronal activation and blood vessels diameter modifications ensures the proper supply of oxygen and nutrients to the central nervous system. In the brain, CBF adaptations are governed by vasoactive agents and their action on the vascular system (Iadecola, 2017). This phenomenon is also involved in the genesis of the blood-oxygen-level-dependent (BOLD) signals used by neuroimaging techniques, like functional magnetic resonance imaging (fMRI), to map changes in brain activity. Although being highly investigated, the interpretation of activity-dependent BOLD responses is widely debated (Hall et al., 2016). The complexity of investigating BOLD neurophysiological basis, i.e. NVC mechanisms, resulted in the inability to define a comprehensive theory for BOLD signals interpretation.
In this work of thesis, the attention was focused on NVC mechanisms in the cerebellum. In this region, NVC has been previously investigated in the molecular layer, where interneurons activation has been found as the main player, unlike Purkinje cells spiking activity (Cauli et al., 2004; Thomsen et al., 2004). Surprisingly, there was no information about the role of the granular layer in cerebellar NVC before our investigations. In the granular layer, NVC is mediated by granule cells through an NMDA receptor/NO-dependent system acting on pericytes (Mapelli et al., 2017). The latter are contractile cells able to regulate the caliber of brain capillaries (Attwell et al., 2016),which are thought to be involved in the genesis of BOLD signals (Hall et al., 2016).
Recent investigations using human fMRI demonstrated that cerebellar vermis lobule V and hemisphere lobule VI showed respectively linear and non-linear BOLD responses during the same motor task performance (Alahmadi et al., 2017). In mouse cerebellar slices, vermis lobule V and hemisphere lobule VI responded with different non-linear neurovascular events to several frequency patterns of neuronal activation, suggesting that NVC and thus BOLD signals might be region-dependent in the cerebellum (Gagliano et al., 2018 in preparation).
In conclusion, granule cells, pericytes and capillaries may drive the basic neurovascular mechanisms of the cerebellum, but different cerebellar regions (vermis and hemisphere) could differently contribute to the genesis of cerebellar BOLD signals. These results might reflect different functions of these cerebellar areas following the same input.
19
GAGLIANO, GIUSEPPE. "Studio dell'accoppiamento neurovascolare nello strato granulare del cervelletto." Doctoral thesis, Università degli studi di Pavia, 2019. http://hdl.handle.net/11571/1248447.
Full textAbstract:
The neurovascular coupling (NVC) or functional hyperemia is the mechanism whereby neuronal activity controls cerebral blood flow (CBF). The tight coupling between neuronal activation and blood vessels diameter modifications ensures the proper supply of oxygen and nutrients to the central nervous system. In the brain, CBF adaptations are governed by vasoactive agents and their action on the vascular system (Iadecola, 2017). This phenomenon is also involved in the genesis of the blood-oxygen-level-dependent (BOLD) signals used by neuroimaging techniques, like functional magnetic resonance imaging (fMRI), to map changes in brain activity. Although being highly investigated, the interpretation of activity-dependent BOLD responses is widely debated (Hall et al., 2016). The complexity of investigating BOLD neurophysiological basis, i.e. NVC mechanisms, resulted in the inability to define a comprehensive theory for BOLD signals interpretation.
In this work of thesis, the attention was focused on NVC mechanisms in the cerebellum. In this region, NVC has been previously investigated in the molecular layer, where interneurons activation has been found as the main player, unlike Purkinje cells spiking activity (Cauli et al., 2004; Thomsen et al., 2004). Surprisingly, there was no information about the role of the granular layer in cerebellar NVC before our investigations. In the granular layer, NVC is mediated by granule cells through an NMDA receptor/NO-dependent system acting on pericytes (Mapelli et al., 2017). The latter are contractile cells able to regulate the caliber of brain capillaries (Attwell et al., 2016),which are thought to be involved in the genesis of BOLD signals (Hall et al., 2016).
Recent investigations using human fMRI demonstrated that cerebellar vermis lobule V and hemisphere lobule VI showed respectively linear and non-linear BOLD responses during the same motor task performance (Alahmadi et al., 2017). In mouse cerebellar slices, vermis lobule V and hemisphere lobule VI responded with different non-linear neurovascular events to several frequency patterns of neuronal activation, suggesting that NVC and thus BOLD signals might be region-dependent in the cerebellum (Gagliano et al., 2018 in preparation).
In conclusion, granule cells, pericytes and capillaries may drive the basic neurovascular mechanisms of the cerebellum, but different cerebellar regions (vermis and hemisphere) could differently contribute to the genesis of cerebellar BOLD signals. These results might reflect different functions of these cerebellar areas following the same input.
20
Gerekos, Christopher. "Advanced Backscattering Simulation Methods for the Design of Spaceborne Radar Sounders." Doctoral thesis, Università degli studi di Trento, 2020. http://hdl.handle.net/11572/261416.
Full textAbstract:
Spaceborne radar sounders are an important class of remote sensing instruments which operate by recording backscattered electromagnetic waves in the vicinity of a solid planetary body. The incoming waves are generally transmitted by the radar itself (active sounding), although external signals of opportunity can also be used (passive sounding). There are currently two major planetary radar sounders under development, both headed to the Jovian icy moons (Europa, Ganymede and Callisto). Designing a radar sounder is a very challenging process involving careful leveraging of heritage and predictive tools, and in which backscattering simulators play a central role. This is especially true for coherent simulators, due to their higher accuracy and the possibility they offer to apply advanced processing techniques on the resulting simulated data, such as synthetic aperture radar focusing, or any other operation which requires field amplitude, phase and polarisation. For this reason, designing computationally-efficient coherent simulators is an important and active research area. The first contribution of this thesis is a novel multilayer coherent simulator based on the Stratton-Chu equation and the linear phase approximation, which can generate realistic simulated radar data on a wide range of surface and subsurface digital elevation models (DEM), using only a fraction of the computational resources that a finite-difference time-domain method would need. Thorough validation was conducted against both theoretical formulations and real data, which confirmed the accuracy of the method. The method was then generalised to noisy active and passive sounding, which is an important capability in the context of the proposed use of passive sounding on the Jovian icy moons. Provided that representative information about the surface and this external field exists, the simulator could compare the relative scientific value of active and passive sounding of a given target under given conditions. However, quality DEMs of the Jovian icy moons are scarce. For this reason we also present a comparative study of the fractal roughness of Europa and Mars (a much better studied body), where we derive fractal analogue maps of twelve types of Europan terrains on Mars. These maps could be used to guide the choice of Martian DEMs on which to perform representative backscattering simulations for future radar missions on Europa. Finally, we explore the possibility of entirely new radar architectures with the novel concept of the distributed radar. In a distributed sounder, very large across-track antennas can be synthesised from smallsats flying on selected orbits, providing a way to obtain a highly-directive antenna without the need to deploy large and complex structures in space. We develop an analytical formulation to treat the problem of beamforming with an array affected by perturbations on the positions of its array elements, and propose a set of Keplerian parameters that enable the concept.
21
Tull-Green, Kate. "Changes in parent-child interaction patterns after the Webster-Stratton Parenting Programme." Thesis, University of Oxford, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.419350.
Full text
22
Gilmour, Gregory S., and R. Mitchell Brown. "From SAC to STRATCOM: the origins of unified command over nuclear forces." Thesis, Monterey, California: Naval Postgraduate School, 1993. http://hdl.handle.net/10945/24173.
Full text
23
Gerekos, Christopher. "Advanced Backscattering Simulation Methods for the Design of Spaceborne Radar Sounders." Doctoral thesis, Università degli studi di Trento, 2020. http://hdl.handle.net/11572/261416.
Full textAbstract:
Spaceborne radar sounders are an important class of remote sensing instruments which operate by recording backscattered electromagnetic waves in the vicinity of a solid planetary body. The incoming waves are generally transmitted by the radar itself (active sounding), although external signals of opportunity can also be used (passive sounding). There are currently two major planetary radar sounders under development, both headed to the Jovian icy moons (Europa, Ganymede and Callisto). Designing a radar sounder is a very challenging process involving careful leveraging of heritage and predictive tools, and in which backscattering simulators play a central role. This is especially true for coherent simulators, due to their higher accuracy and the possibility they offer to apply advanced processing techniques on the resulting simulated data, such as synthetic aperture radar focusing, or any other operation which requires field amplitude, phase and polarisation. For this reason, designing computationally-efficient coherent simulators is an important and active research area. The first contribution of this thesis is a novel multilayer coherent simulator based on the Stratton-Chu equation and the linear phase approximation, which can generate realistic simulated radar data on a wide range of surface and subsurface digital elevation models (DEM), using only a fraction of the computational resources that a finite-difference time-domain method would need. Thorough validation was conducted against both theoretical formulations and real data, which confirmed the accuracy of the method. The method was then generalised to noisy active and passive sounding, which is an important capability in the context of the proposed use of passive sounding on the Jovian icy moons. Provided that representative information about the surface and this external field exists, the simulator could compare the relative scientific value of active and passive sounding of a given target under given conditions. However, quality DEMs of the Jovian icy moons are scarce. For this reason we also present a comparative study of the fractal roughness of Europa and Mars (a much better studied body), where we derive fractal analogue maps of twelve types of Europan terrains on Mars. These maps could be used to guide the choice of Martian DEMs on which to perform representative backscattering simulations for future radar missions on Europa. Finally, we explore the possibility of entirely new radar architectures with the novel concept of the distributed radar. In a distributed sounder, very large across-track antennas can be synthesised from smallsats flying on selected orbits, providing a way to obtain a highly-directive antenna without the need to deploy large and complex structures in space. We develop an analytical formulation to treat the problem of beamforming with an array affected by perturbations on the positions of its array elements, and propose a set of Keplerian parameters that enable the concept.
24
Stiernborg, Anneli. "”De otroliga åren” - behandlares erfarenhet av Webster-Strattons manualbaserade föräldraträning." Thesis, Stockholm University, Department of Psychology, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-7344.
Full textAbstract:
<p>Aggressivitet och utagerande beteenden hos barn är ett växande problem med konsekvenser både på individ och på samhällsnivå. Det finns idag evidensbaserade behandlingsmetoder som förebygger och behandlar barns utagerande beteendeproblem men forskningen visar att få barn får tillgång till dem. Föräldraträning är den metod som har starkast forskningsstöd. Studiens syfte är att med hjälp av kvalitativa intervjuer ge en bild av behandlares erfarenhet och upplevelse av ”De otroliga åren”, ett manualbaserat föräldraträningsprogram inom Barn och ungdomspsykiatrin samt att beskriva hur det tillämpats. Resultatet visar att 7 av 9 mottagningar som använder metoden arbetar manualtroget dvs. får med kärnkomponenterna i programmet. Detta innebär en positiv förändring jämfört med tidigare utvärderingar. Faktorer som motiverar behandlarna att följa manualen är metodens effektivitet, tillgång till handledning, tillräckligt med tid, kollegor som arbetar med metoden, tillit till forskningsbaserade metoder samt stöd från chefen.</p>
25
Bernardini, Luca. "Studio non lineare della convezione naturale in uno strato poroso orizzontale." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2018. http://amslaurea.unibo.it/17256/.
Full textAbstract:
In questo elaborato si costituisce un modello numerico del problema di Darcy-Bénard con l’obiettivo di definire la sua risoluzione mediante il pacchetto software Mathematica 11.1 (© Wolfram, inc.).
La struttura della tesi comprenderà, nel capitolo 2, una descrizione delle equazioni fondamentali che governano il moto di un fluido condotta avvalendosi dell’approssimazione di Oberbeck-Boussinesq, inoltre si descriveranno le condizioni al contorno e le condizioni iniziali applicabili ad un generico sistema di equazioni differenziali.
Nel capitolo 3 verrà descritto il problema di Darcy-Bénard riferito ad uno strato poroso orizzontale, nonché le caratteristiche generali dei mezzi porosi stessi.
Si porrà particolare attenzione al caso in cui le equazioni che descrivono il problema siano considerate non lineari, stazionarie e descritte utilizzando la funzione di corrente, tale scenario costituirà il modello del problema che si cercherà in seguito di risolvere numericamente.
Sarà poi necessario, nel capitolo 4, introdurre il metodo degli elementi finiti il quale verrà utilizzato implicitamente dal software di calcolo per discretizzare il dominio del problema in esame e permettere quindi la risoluzione numerica del problema stesso.
Il capitolo 5 riguarderà la descrizione della tecnica di implementazione del problema di Darcy-Bénard sul software utilizzato mostrando sia la procedura utilizzata che i risultati ottenuti.
Verranno individuate le varie configurazioni a diverso numero di celle convettive che si formano al variare del numero di Rayleigh, si otterrà una correlazione tra il numero di Rayleigh e il numero di Nusselt medio alla parete e, infine, verrà riportato l’andamento dell’energia cinetica, per le configurazioni a diverso numero di celle ottenute.
Nel capitolo 6 sarà condotta una analisi dei risultati visualizzati nel capitolo 5 ed il loro confronto con risultati ottenuti nella letteratura attualmente esistente.
26
Negosanti, Michael. "Sviluppo di un simulatore di strato fisico per il sistema LoRa." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2020.
Find full textAbstract:
La necessità di sviluppare sistemi di comunicazione in grado di collegare il mondo fisico con l’universo dell’Internet of Things ha consentito la nascita dell’entità tecnologica LoRa. Questo elaborato, si focalizza sul livello fisico LoRa PHY, ovvero sull’analisi del processo di demodulazione e trasmissione del segnale modulato. In primo luogo, vengono descritte le componenti per la costruzione di un ricevitore LoRa, realizzato attraverso il software-defined radios (RTL-SDR) interfacciato con Matlab. Più precisamente, si sono esaminate ognuna delle operazioni interne al ricevitore, quali: whitening, Hamming encoding, interleaving, Gray mapping e demodulation. Successivamente, sono state utilizzate due schede Arduino MKR WAN 1300, per svolgere prove sperimentali di comunicazione tra trasmettitore e ricevitore, volte a dimostrare le performance della trasmissione LoRa.
27
Cinnirella, Alessandro. "Nanoindentazione dello strato di pentacene in otft sottoposti a irraggiamento ionico." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2013. http://amslaurea.unibo.it/5950/.
Full textAbstract:
In questa tesi abbiamo presentato i risultati sperimentali di nanoindentazione su pentacene in transistor organici a film sottile (OTFT) sottoposti ad irraggiamento ionico. Nella prima parte si ripercorre lo sviluppo della tecnica di indentazione strumentata, con una focalizzazione particolare sui modelli matematici proposti per l'interpretazione dei dati forza-spostamento ricavati da queste misure. In particolare, viene diffusamente esposta l'implementazione della tecnica di analisi proposta da Oliver e Pharr, che è utilizzata in questa tesi. Il secondo capitolo espone le caratteristiche generali (strutturali ed elettriche) degli OTFT. Un paragrafo è dedicato al pentacene, che rappresenta lo strato attivo dei transistor organici su cui sono state effettuate le misure in laboratorio. L'ultima parte del capitolo consiste in una panoramica dell'interazione tra radiazioni e polimeri. Vengono quindi presentati i risultati sperimentali: si confrontano le proprietà di durezza e modulo di Young per campioni caratterizzati da differenti specie ioniche, dosi ed energie di irraggiamento (unitamente a campioni reference, per permettere un confronto con il pentacene sottoposto a bombardamento).
28
Aiazzi, Lorenzo. "Combined analysis of C-band polarimetric radar and disdrometer data of convective and stratiform precipitation." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2020. http://amslaurea.unibo.it/22121/.
Full textAbstract:
The aim of the present Thesis is to observe the characteristics of the precipitation and to check the quality of the radar data under different meteorological conditions. This aim is achieved through a combined analysis of the data collected by two instruments that have different operating principles: a C-band polarimetric radar and a PARSIVEL2 disdrometer. Radar variables are compared with the characteristics and the microphysics evolution of the precipitation retrieved by the disdrometer. The disdrometer is located in the city center of Bologna, at about 28 km far from the radar site. The combined analysis of the two instruments is done for a dataset that includes 11 months of the years 2019 and 2020. The dataset contains convective and stratiform precipitation events. The lower radar elevations are affected by anthropogenic interferences that slightly reduce the dataset extension. The analyses show a good correlation between the reflectivity factors retrieved by the radar and by the disdrometer through the Drop Size Distribution (DSD). The correlation coefficient between the two estimations is 0.84. A verification of the operational algorithm of the hydrometeor classification is obtained through the radar data. Moreover, the convective and stratiform discrimination developed through the disdrometer data is consistent with the polarimetric variables of the radar. For example, the distribution of the differential reflectivity peaks for higher values in a regime of convective precipitation in comparison to the stratiform regime. The convective distribution of the differential reflectivity has a median of 1.5 dB, while the stratiform one has a median of 0.9 dB. Lastly, the case study of a thunderstorm occurred in Bologna on May 28th 2019 is described. This case study shows precipitation structures of different intensities and different types of hydrometeors, allowing a verification of the previous results and a more-detailed analysis of the DSD characteristics.
29
Durieux, Carlos Gustavo. "Diagenetic mineralization of the Juramento sediment-hosted stratiform Cu-(Ag) deposit, Salta District, Northwestern Argentina." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ57402.pdf.
Full text
30
Nowecki, James Philip. "Tracing seawater evaporation and its role in the formation of sediment-hosted stratiform copper deposits." Thesis, University of Southampton, 2014. https://eprints.soton.ac.uk/372490/.
Full textAbstract:
This study investigates the preserved fluid contents of different generations of mineralised and unmineralised vein minerals from multiple different deposits across the Zambian Copperbelt to define the fluid physicochemical characteristics of the fluids and investigate the importance of fluid processes through the basin history. An investigation into REE and trace element and sulphur isotope signatures of sulphides was conducted to investigate sulphide formation mechanisms. Re-Os dating of sulphides from the Domes Region to provide temporal constraints on mineralisation processes in this area. A textural study on uranium mineralisation at the Lumwana deposit was undertaken to understand the relationships between uranium and sulphide mineralisation. Variable Cl/Br of fluids indicates they were derived from evaporation of seawater, deposition of evaporite sequences and the subsequent dissolution of these evaporite sequences, with bittern brines dominant earlier in the basin history, and dissolution of halite more important during compression and orogenesis. Cation contents of fluids record the development of alteration assemblages caused by the movement of these brines at temperatures typically >200C and salinities >30 wt% NaCl equiv. Stable isotope data records the role of organic reductants and fluid-host rock equilibration through basin history. Rare earth element signatures of sulphides further record the importance of the development of the alteration assemblage on the changing chemistry of the hydrothermal fluids, whilst trace element concentrations suggest the metal budget in the fluids reflects source rock variation. Sulphur isotope data suggests the main mechanism of sulphide formation was thermochemical sulphate reduction of seawater sulphate, consistent with the temperatures of the fluids reported here. Re-Os dating records the importance of orogenesis on the timing of mineralisation in the Domes Region, and are consistent with published Re-Os dating of sulphides and U-Pb dating of uranium minerals. Textural relationships indicate initial uranium mineralisation at the Lumwana deposit pre dates sulphide mineralisation, and final movement on the shear zone, but has undergone a remobilisation event later in the deposit history.
31
Ritter, Christina. "On hallowed ground the significance of geographic location and architectural space in the indenties [sic] of the Royal Shakespeare Company and Shakespeare's Globe /." The Ohio State University, 2007. http://rave.ohiolink.edu/etdc/view?acc_num=osu1188510799.
Full text
32
Boyer, Eric. "Estimation paramétrique de moments spectraux d'échos doppler : application aux radars strato-troposphériques." Cachan, Ecole normale supérieure, 2002. http://www.theses.fr/2002DENS0037.
Full text
33
ANGELINI, Federico. "Aerosol nello strato limite planetario: relazione tra proprietà ottiche ed umidità relativa." Doctoral thesis, La Sapienza, 2005. http://hdl.handle.net/11573/917483.
Full textAbstract:
Lo studio degli aerosol da Terra con l’utilizzo simultaneo di più tecniche di telerilevamento – un lidar Rayleigh, un lidar Raman ed un radiometro a microonde – ha permesso di caratterizzare l’accrescimento igroscopico di aerosol in differenti condizioni meteorologiche. L’accrescimento igroscopico degli aerosol è ritenuto responsabile di variazioni dell’albedo planetaria e pertanto importante come forzante radiativo per il pianeta.
Misurando contemporaneamente l’umidità relativa atmosferica ed il coefficiente di retrodiffusione rispettivamente con un lidar Raman e con un lidar Rayleigh è stato possibile mettere in relazione la sezione d’urto aerosolica con l’umidità relativa, secondo l’andamento proposto da Kasten (1969). Sotto differenti condizioni meteorologiche sono stati rilevati comportamenti diversi a seconda della provenienza delle masse d’aria osservate, ed è stato estrapolato il valore dell’esponente della funzione di Kasten per le diverse tipologie di aerosol studiate.
34
Thalur, Jagadesh Rao. "Progressive failure analysis of [0/+/-60] laminates under bi-axial stress by generalized Yeh-Stratton criterion." Thesis, California State University, Long Beach, 2016. http://pqdtopen.proquest.com/#viewpdf?dispub=10116146.
Full textAbstract:
<p>The light weight of composite materials has attracted interests to improve fuel economy of aircrafts and to extend flight range. The usage of composite materials is increasing in airframes and other parts of aerospace industry. Although most tests on composites are conducted uniaxially, they are subjected to multi-axial loads in real life applications. Hence, there is a need to better understand the complex failure mechanisms in composite structures. More reliable failure theories and damage progression models should be devised. Also, reliable criteria for predicting failure of fiber composite laminates are necessary for rational analysis and design. In this thesis, the behavior of a symmetric composite material under bi-axial loading is studied and the failure of the composite material is predicted by Yeh-Stratton criterion. A MATLAB program is prepared for the study of failure in tubular specimens composed of AS4/3501-6 carbon/epoxy laminates, which were subjected to internal pressure and axial force simultaneously to vary the states of stress. It is shown that the Yeh-Stratton criterion is in a good agreement with the experimental results. Future work may include collection of more accurate and different kind of experimental data on composite materials and modification of the interaction factor B12 value to evaluate its effect on the theoretical prediction by the Yeh-Stratton criterion. </p>
35
Dash, Juliet. "A qualitative exploration of parents' views following attendance at a Webster Stratton Incredible Years Parenting Programme." Thesis, University of East London, 2012. http://roar.uel.ac.uk/1520/.
Full textAbstract:
Parenting plays a vital role in determining children's future life opportunities and irrespective of the skills and resources parents bring to the task all parents can find parenting challenging on occasions. This study explored the views of parents who attended a Webster Stratton Incredible Years Parenting Programme for parents of pre-school children at a local Children's Centre. Families living in known socially deprived areas of a local outer London borough were targeted. The group parenting programme was delivered over a period of ten weeks focusing on positive behaviour management strategies using praise and rewards with an emphasis on developing play and communication skills. A home visit to support the development of play skills was offered to some families. A qualitative design methodology was used to elicit parents' views about their reasons for attending the programme and any changes they perceived in their own and their children's behaviour as a result. Thirteen parents were interviewed in their homes approximately six months after the completion of the programme. The data from the interviews was analysed using thematic analysis. Six key themes and a number of sub-themes were identified. Parents cited a number of practical, emotional and social reasons for attending the programme. Parents reported substantial changes in their behaviour and a greater awareness of the link between these and their children's behaviour. They reported a vi greater sense of self-efficacy and valued being part of a group. For these parents participating, a group parenting programme was viewed as a positive experience. A number of parents thought the programme needed to be extended to incorporate support after the completion of the programme. The research also highlighted parental views of how their own upbringing and childhood experiences had impacted on them as parents.
36
Ferrari, Chiara. "Il romanzo storico: analisi di un genere e proposta di traduzione di un capitolo del romanzo Radio Girls di Sarah-Jane Stratford." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2016. http://amslaurea.unibo.it/11354/.
Full textAbstract:
Il presente elaborato finale presenta un'analisi del genere letterario "romanzo storico" e delle sue ambiguità. Mi propongo di comprendere meglio questo genere attraverso la proposta di traduzione dall'inglese all'italiano del capitolo 9 del romanzo storico Radio Girls di Sarah-Jane Stratford. Alla presentazione dell'autore e dell'opera, segue un breve excursus storico sulle tappe principali nella storia di questo genere, un'analisi delle sue principali caratteristiche e delle problematiche traduttive connesse a questo ramo letterario. La parte più significativa dell'elaborato si concentra nell'analisi e nella traduzione del testo, con successivo commento alla traduzione, dove sono esposte e giustificate le strategie traduttive adottate per la risoluzione di passaggi critici e la scelta di una soluzione finale.
37
Phillips, S. J. "History in men's lives : A study of two cycles of Shakespeare's Histories produced at Stratford in the nineteen-sixties and nineteen-seventies." Thesis, University of Exeter, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.380799.
Full text
38
Al-Ghaith, Abdullah Hassan Ahmed. "Theatre design at the Royal Shakespeare Theatre (Stratford upon Avon)(1963-1977) with special reference to the work of Abd'El Kader Ferrah." Thesis, Goldsmiths College (University of London), 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.272122.
Full textAbstract:
Adopting a qualitative mode of researc~ this study aims to present the Theatre Designer, Abd' Elkader Farrah, as a phenomenon in British theatrical design. More specifically, the study aims to illustrate the role played by Farrah at the Royal Shakespeare Theatre; to present the way in which Farrah's role and contribution affected the production of Shakespearean plays by the Royal Shakespeare Company (RSC), including the contribution made by Farrah's significant ideas and concepts in scenographic design to the RSC. The evaluation compares three theatre designers; Farrah, John Bury and Christopher Morley, all of whom differ in their approaches to theatrical design, through an analytical comparative study of their designs for five Shakespearean plays. In accordance with the research framework adopted for this study, the aim has been to qualify the research phenomenon, not in terms of number crunching, but rather, with the aim of ascertaining how the informants view the research phenomenon under investigation. The planning and implementation of the study has been made in three stages. The first stage aimed to discover information related to the context of the present study in the form of background literature, covering the period from 1939 to 1976. The second stage involved identifying the research design of the study on the basis of the relevant literature. It also involved the research sample and the fieldwork and data collection process including the contextual factors which affected this process. Stage three included analysis of the interviews and presenting the findings of this analysis. These indicate that Farrah's theatrical designs have been a phenomenon in the British theatre scene in terms of his innovativeness, which is significantly represented in Shakespearean plays. Farrah's colleagues saw him, and also his work, as having an individual approach to scenography. His introduction of symbols and hieroglyphic script into his designs was unique, especially as they represent the influence of and also his reflection-upon his Middle Eastern cultural background. Findings also made clear that Farrah's view of things, especially as regards ways to present Shakespeare, is unique, for example in his rejection of conventional symbols in costume. In this sense, the findings have highlighted the influence of the social and cultural contexts in which the designer was brought up and the culture which he absorbed on the approach adopted in the production. The study illustrates how the designer has distinguished artistic characteristics as well as his relevance beyond the theatre. Farrah's many works were more orientated toward dependence on the arts through using and exploiting movements in the fine arts, such as surrealism and the avant-garde, to their ultimate scenographic designation. Christopher Morley's designs are more scientifically based, and reflect an artistic doctrine based upon philosophical movements and their impact on the arts. In contrast, John Bury's designs are more floor level stage-based, i.e., launched from the stage floor itself, proceeding from design to execution to materialisation
39
Gorzynski, George Arthur. "Geology and lithogeochemistry of the cirque stratiform sediment-hosted Ba-Zn-Pb-Ag deposit Northeastern British Columbia." Thesis, University of British Columbia, 1986. http://hdl.handle.net/2429/26291.
Full textAbstract:
The Cirque deposit is one of several Devono-Mississippian stratiform sediment-hosted Ba-Pb-Zn-Ag deposits in the Akie Zn-Pb district of northeastern British Columbia. It has drill indicated reserves of 32.2 million tonnes grading 7.9% Zn, 2.1% Pb, and 47.7 g/tonne Ag.
The "ore" zone is a syngenetic exhalite deposit. Its deposition, however, was but one of many wide-ranging "ore"-related events that dominated sedimentation in the shale basin. These "ore"-related events include exhalative activity, influxes of turbidites and increased organic productivity.
Many details of the "ore"-related events can be deduced from field observations and bulk lithogeochemical data. In this study 271 samples representing over 700 m of drillcore were analysed for up to 33 elements. These lithogeochemical data were investigated using a standardization procedure in which analyses were ratioed to the abundances of the relatively immobile detrital components, alumina and zirconium. After this transformation, anomalous abundances of "ore" constituents (Ba, Fe, Zn, Pb, Ag and S) and many other chemical components, were identified in the host rocks beyond the immediate vicinity of the "ore" zone. This procedure also facilitated an estimate of provenance for the host rocks and their relative rates of sedimentation. Geochemical trends are also evident within the "ore" zone. Ba:Sr ratio trends mimic Pb:Zn ratio trends and may be a useful tool in the study and exploration of other stratiform barite deposits. They delineate zoning patterns and may act as a guide to exhalative vent areas which may be of economic interest.<br>Science, Faculty of<br>Earth, Ocean and Atmospheric Sciences, Department of<br>Graduate
40
Cuono, Giovanni. "Elettrodeposizione di idrossidi doppi a strato contenenti cobalto su supporti di diversa natura." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2017. http://amslaurea.unibo.it/13423/.
Full textAbstract:
Il lavoro di tesi si è incentrato sull'elettrosintesi di idrossidi doppi a strato (LDH) contenenti cobalto come catione bivalente e alluminio o ferro come metallo trivalente. Diversi materiali elettrodici sono stati studiati come possibili supporti per le LDH: due differenti fogli di grafite e due spugne, una di natura carboniosa (RVC) e una di nichel. Il comportamento elettrochimico, la stabilità e la riproducibilità dei film di LDH depositati sono stati studiati mediante voltammetria ciclica (CV) in ambiente alcalino. Il miglior supporto in termini di riproducibilità della deposizione, alta area elettroattiva e basso costo, è risultato il foglio di grafite “Grafoil”, quindi si è deciso di approfondire lo studio di tale supporto modificato con film di LDH in applicazione per lo sviluppo di supercapacitori. Dopo aver studiato la correlazione tra i tempi di elettrodeposizione e le masse ottenute, sono state calcolate le capacità specifiche dei materiali depositati per 30 e 120 s, sia dai CV che dalle curve di carica e scarica eseguite a una densità di corrente costante. Inoltre le strutture delle LDH Co/Al e Co/Fe elettrosintetizzate su Grafoil sono state confermate tramite la registrazione di difrattogrammi XRD e le morfologie dei depositi ottenuti a diversi tempi di elettrosintesi sono state studiate acquisendo immagini SEM.
41
Panciera, Guido. "Effetto della dissipazione viscosa nello strato limite termico attorno ad una lamina piana." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2019. http://amslaurea.unibo.it/19716/.
Full textAbstract:
Lo studio della dissipazione viscosa nello strato limite generato attorno ad una lamina piana ha origine già dai primi studi di Pohlhausen. Per diversi aspetti pratici, si tende in genere a trascurare gli effetti della dissipazione viscosa, ma vi sono altrettanti casi in cui la forte viscosità del fluido in esame e/o l’elevata velocità di quest’ultimo rendono necessario lo studio dello strato limite termico includendo anche gli effetti dissipativi. In particolare, essi si manifestano nella struttura del campo di temperatura e influiscono significativamente sul calcolo di importanti grandezze di interesse applicativo. La trattazione del problema termico è sempre stata difficoltosa a causa della complessità delle equazioni differenziali che governano il problema stesso. In questo lavoro di tesi si andrà ad esporre il metodo con cui sono state ricavate le equazioni associate allo strato limite, sia dinamico che termico, con una discussione su un possibile approccio risolutivo per lo strato limite dinamico e su diversi processi risolutivi per lo strato limite termico. In particolare, per quest’ultimo, si andrà a trattare l’associato problema differenziale dal punto di vista numerico, sfruttando il software Mathematica (© Wolfram Research Inc.), analizzando gli effetti sia qualitativi che quantitativi della variazione dei numeri di Prandtl e di Eckert sull’andamento della temperatura adimensionale e sulla sua derivata prima in corrispondenza della lamina piana. Quest’ultimo parametro è di particolare importanza per il calcolo dello scambio termico tra parete solida e fluido. Si andrà inoltre a ricavare le equazioni dello strato limite termico nei casi asintotici in cui il numero di Prandtl tenda a zero o ad infinito e nel caso in cui il numero di Eckert tenda a zero o ad infinito, e per tali casi si procederà alla relativa trattazione numerica.
42
Aydar, Erkan. "Etude volcano-structurale et magmatologique du strato-volcan hasan dagi (anatolie centrale-turquie)." Clermont-Ferrand 2, 1992. http://www.theses.fr/1992CLF21446.
Full textAbstract:
Le hasan dagi, strato-volcan d'anatolie centrale (turquie), comprend 2 cones terminaux: grand hasan dagi (3253 m) et petit hasan dagi (3069 m). Son volume est estime a 354 km#3 et il couvre une superficie de 760 km#2 environ. Une approche pluri-disciplinaire nous a permis de retracer son evolution volcano-structurale, dynamique (styles eruptifs) et magmatologique. Nous avons distingue 3 grands stades d'evolution au cours de son histoire: 1) systeme de kecikalesi (13 ma environ) presente une depression d'origine calderique. Les caracteres mineralogiques et geochimiques (presence de pigeonite et affinite tholeiitique) en font un systeme independant du hasan dagi (s. S. ); 2) le paleo-hasan dagi (7 ma environ) est constitue d'empilement de coulees d'andesites basaltiques, lahars et ignimbrites rhyolitiques. Ce dernier episode conduit a l'effondrement d'une caldera. Les caracteres mineralogiques et geochimiques sont similaires a kecikalesi, a l'exception de la presence de grenat microlitique dans les laves et les ignimbrites du paleo-hasan dagi; 3) le hasan dagi (s. S. ) s'est edifie en deux etapes (le meso-hasan dagi et le neo-hasan dagi) caracterisees par 2 stades calderiques. Les produits sont des domes-coulees andesitiques, dacitiques et plus rarement rhyolitiques, avec nuees ardentes associees, des nappes d'ignimbrites rhyodacitiques et rhyolitiques et des breches intrusives. Les dernieres eruptions datent de moins de 6000 ans. Le melange magmatique est a l'origine des laves intermediaires. La serie calco-alcaline moyennement potassique est complete (basalte a rhyolite). Les termes les plus differencies sont fortement potassiques. D'autre part, un volcanisme basaltique accompagne tous les appareils centres. Nous avons distingue 3 generations: premiere generation, liee aux edifices anciens (kecikalesi et paleo-hasan dagi) a opx; deuxieme generation, interstratifiee dans la serie du meso-hasan dagi; troisieme generation, contemporaine du neo-hasan dagi calco-alcalin, a mineralogie de basaltes alcalins (feldspaths potassiques, nepheline normative, cpx de basaltes intraplaques), mais affinite orogenique. Sur le plan geochimique, certains de ces basaltes contiennent des microlites de grenat automorphe; dont l'origine est a rapporter a un processus de fusion partielle (croute subductee ou croute inferieure)
43
Shupe, Matthew David. "An intricate balance of liquid and ice: The properties, processes, and significance of Arctic stratiform mixed-phase clouds." Connect to online resource, 2007. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3284464.
Full text
44
Lin, Xing. "Model studies of rainout, washout and the impact of chemical inhomogeneity on SO₂ oxidation in warm stratiform clouds." Diss., Georgia Institute of Technology, 1990. http://hdl.handle.net/1853/25714.
Full text
45
Stefanelli, Matteo. "Analisi del non-equilibrio termico locale nella conduzione non-stazionaria in uno strato poroso." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2021. http://amslaurea.unibo.it/22258/.
Full textAbstract:
Lo scopo di questo lavoro di tesi si focalizza sullo studio, sia dal punto di vista analitico che da quello numerico, della conduzione del calore non stazionaria di un mezzo poroso rettangolare saturo di fluido. Per descrivere tale fenomeno sono state adoperate le equazioni di bilancio dell’energia modellate tramite la teoria del non-equilibrio termico locale, cioè una coppia di equazioni di bilancio dell’energia sia per la fase solida sia per la fase fluida, dipendenti l’una dall’altra in quanto legate dal termine generativo di interfase. La necessità di avere due equazioni di bilancio dell’energia è dovuta a una caratteristica importante dei processi di trasferimento del calore in una schiuma metallica.
In questo elaborato verranno risolte numericamente le equazioni di biliancio dell’energia del non-equilibrio termico locale, tramite l’ausilio del programma di calcolo MATLAB e il suo solutore “pdepe”, indagando e proponendo una soluzione al “paradosso” introdotto da Vadazs* nel suo articolo. Tale paradosso si presenta quando si risolvono analiticamente le equazioni di bilancio dell’energia del non-equilibrio termico locale applicando due metodi differenti: il metodo di sostituzione delle variabili e il metodo di separazione delle variabili dipendenti.
Dai risultati ottenuti da Vadasz emerge una discrepanza tra i due metodi in quanto uno dei due porta a predire un comportamento di equilibrio termico tra le due fasi a ogni istante di tempo, mentre l’altro predirebbe un comportamento di non-equilibrio termico locale tra le due fasi, particolarmente evidente nei primi istanti di tempo.
Successivamente si è analizzato il problema di conduzione studiandone la variazione dei transitori termici del campo di temperatura della fase solida e dalla fase fluida al mutare dei parametri adimensionali che caratterizzano le equazioni di bilancio dell’energia nella sue forme adimensionalizzate.
46
FOUILLOUX, ANNE. "Analyse satellite et modelisation meso-echelle des nuages de types cirrus et strato-cumulus." Clermont-Ferrand 2, 1997. http://www.theses.fr/1997CLF21927.
Full textAbstract:
Le travail presente dans ce manuscrit concerne l'evaluation du role des nuages de types strato-cumulus et cirrus sur les modifications de l'environnement global, et se situe dans le cadre des campagnes eucrex (european cloud and radiation experiment). Notre premier objectif etait de confronter differents outils d'extraction d'informations pertinentes (couverture nuageuse, epaisseur optique des nuages, taille des particules) a partir des images du capteur avhrr (advanced very-high resolution radiometer) afin de trouver le meilleur compromis. Nous avons ainsi montre que l'utilisation de methodes neuronales, qui permet de diminuer la complexite du probleme en temps et en espace, s'avere judicieuse et mis au point l'algorithme acnn (adjustable combination of neural networks). Des reseaux de neurones ont ete combines (pour rendre robuste le schema d'inversion) : le premier classe les pixels selon leur geometries d'illumination et d'observation, le second identifie le type de nuage (cirrus, strato-cumulus, etc. ) et les autres servent a determiner l'epaisseur optique et la taille des particules avec une precision croissante. Le second objectif de cette these etait d'ameliorer les procedures d'initialisation du rams (regional atmospheric modeling system), developpe par pielke et cotton (1982), afin de mieux simuler les situations observees. Ce modele meso-echelle a ete implemente en mode non-hydrostatique en activant les modules microphysique (flatau et al. , 1989) et de transfert radiatif (chen et cotton, 1983), avec deux grilles imbriquees qui autorisent des zooms sur certaines zones geographiques. Sur deux etudes de cas, des comparaisons entre les sorties du modele et les mesures aeroportees correspondantes ont montre que l'assimilation dans le rams de la couverture nuageuse obtenue a l'aide de notre nouvel algorithme autorise une excellente representation tridimensionnelle des systemes nuageux.
47
Cubukcu, Evren H. "Evolution pétrologique du strato-volcan Nemrut Dagi (Turquie) : magmatisme hyperalcalin en domaine de collision." Univ. Blaise Pascal - Clermont-Ferrand 2, 2008. http://www.theses.fr/2008CLF21820.
Full textAbstract:
Le volcan Quaternaire Nemrut est situé à 12 Km de la zone de collision continentale entre l'Arabie et l'Anatolie. Les produits éruptifs varient depuis des basaltes légèrement alcalins à des rhyolites hyperalcalines. Le Daly gap observé est en partie comblé par des enclaves co-magmatiques. L'étude minéralogique et géochimique montre que la chambre était stratifiée. La pétrogenèse des magmas est à rapporter au processus de cristallisation fractionnée avec séparation de feldspath, clinopyroxene, olivine et oxydes, avec différents degrés de contamination, des basaltes aux rhyolites hyperalcalines. Les éléments en traces et isotopes du Sr et Nd montrent que les magmas du Nemrut dérivent d'un manteau asthénosphérique modifié légèrement par une subduction antérieure. La genèse de laves hyperalcalines dans une zone de collision est expliquée par la mise en place de liquides d'origine asténosphérique dans la croûte supérieure, en relation avec des zones localement en extension
48
Brambillasca, S. "Biogenesi di membrane : un nuovo meccanismo di inserimento di proteine nel doppio strato lipidico." Doctoral thesis, Università degli Studi di Milano, 2007. http://hdl.handle.net/2434/63135.
Full textAbstract:
Membrane proteins are generally inserted into biological membranes with the assistance of dedicated complexes. We demonstrated the ability of unassisted integration for the eukaryotic protein cytochrome b5 (b5), which inserts into protein-free liposomes, provided that these have low cholesterol content. b5 belongs to the functionally important group of Tail-Anchored (TA) proteins, that are anchored to intracellular membranes by a single transmembrane domain (TMD) close to the C-terminus. We also investigated the limits of unassisted translocation, and report that surprisingly long (up to 85 residues) polar domains, placed downstream to b(5)'s TMD, can efficiently translocate across protein-free bilayers in the near absence of energy.Unassisted translocation was not a unique property of b(5),but shared with another TA protein (PTP1B) which, like b(5), has a moderately hydrophobic TMD. In contrast, more hydrophobic TMDs, like the one of the TA protein synaptobrevin-2 (Syb2), were unable to support translocation of even a short sequence across protein-free liposomes;these TMD-bearing constructs showed the same requirements for energy and for an ER trypsin-sensitive component as reported for native Syb2. Our data solve long-standing discrepancies on TA protein biogenesis and show that unexpectedly large lumenal domains, downstream to a suitable TMD, can translocate across a lipid bilayer without assistance from ER proteins.
49
Moles, Norman Robert. "Geology, geochemistry and petrology of the Foss stratiform barite-base metal deposit and adjacent Dalradian metasediments, near Aberfeldy, Scotland." Thesis, University of Edinburgh, 1985. http://hdl.handle.net/1842/11180.
Full text
50
Chiavegato, Stefano. "Intercalazione di grafene ossido in idrossidi doppi a strato per lo sviluppo di capacitori ibridi." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2021. http://amslaurea.unibo.it/23133/.
Full textAbstract:
In questo lavoro, sono state valutate le prestazioni di quattro tipi di LDH (Co/Al e Co/Fe entrambe con e senza GO nella soluzione di elettrodeposizione) per l'applicazione in stoccaggio di energia, andando a confrontare le capacità specifiche calcolate da voltammetrie cicliche e curve galvanostatiche di carica/scarica. I risultati di tali analisi hanno mostrato come l’LDH a base di Al sia più adatto all’applicazione di accumulo di energia, rispetto a quello con il Fe. Ulteriori caratterizzazioni, come l’XRD ed il SEM accoppiato con l'EDX, hanno confermato la maggior applicabilità dei LDH di Co/Al rispetto a quelli di Co/Fe, in quanto i primi presentano: una struttura più cristallina, una morfologia più uniforme ed un’intercalazione dell’ERGO migliore. Dopo la fase di scelta dell’LDH più performante ci si è dedicati alla caratterizzazione di un capacitore ibrido operante in fase liquida. Concluse le analisi, si è notato come l’ERGO porti all'aumento delle prestazioni del sistema (risultato in linea con quello riscontrato tramite lo studio degli LDH come componenti catodici singoli). Grazie allo studio delle performance a lungo termine è stato possibile verificare come l’ERGO aumenti la stabilità del sistema quando si sottopone quest’ultimo a stress protratto nel tempo. Successivamente, si è proseguito con lo studio di un capacitore ibrido operante in fase solida. Come nel caso del sistema in fase liquida, si è riscontrato un aumento di performance dovuto alla presenza di ERGO nella struttura finale degli LDH.