2,937 research outputs found
Gravitational stability of simply rotating Myers-Perry black holes: Tensorial perturbations
No full textWe study the stability of D >= 7 asymptotically flat black holes rotating in a single two-plane against tensor-type gravitational perturbations. The extensive search of quasinormal modes for these black holes did not indicate any presence of growing modes, implying the stability of simply rotating Myers-Perry black holes against tensor-type perturbations.JSPS - Japan Society for the Promotion of Science [18540265]Alexander von Humboldt Foundation (Germany)Theory Division of the High Energy Accelerator Research Organization in TsukubaFundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP), Brazi
The English hermit; or, Unparalleled sufferings and surprising adventures of Mr. Philip Quarll, who was lately discovered on an uninhabited island in the South sea; where he had lived about fifty years without any human assistance.
No full textAn issue of the 1727 edition in the British museum has the initials P.L. in the title and a dedication, in which the writer claims the authorship of the work, signed Peter Longueville. In the preface (signed P.L.) he denounces the bookseller for having substituted Edward Dorrington's name for his own. For a discussion of the authorship of A. Esdaile's "Author and publisher in 1727: The English hermit", in the Library, 4th ser., v. 2, p. 185-192. Ascribed by some authorities to Alexander Bicknell.Signed: Edward Dorrington.Running title: The English hermit.Mode of access: Internet
Distributed cognition and computer supported collaborative design: The organisation of work in construction engineering
No full textThis thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.The intellectual contribution of this thesis lies within the area of computer supported co-operative work (CSCW), and more specifically, computer supported co-operative design (CSCD). CSCW is concerned with the development of information systems and technological support for multi-participant work activities. Research into CSCW seeks to understand how people and organisations interact with one another, and to integrate this understanding with the development of computer based tools to support real world settings.
Much of the technology developed to support the work of designers has been developed to aid individuals working alone, with tools like computer aided drafting (CAD), scheduling, and database software. The growth of interest in ‘groupware’ has led many technology developers to adapt these design tools for use in group situations. However, joint activities are different from those performed alone, and organisational structures can both interfere with, and supplement co-operative work practices in a way that the current technologies cannot provide support for. To develop effective group design tools, we need to understand more about collaborative processes in design.
This thesis draws from the theoretical underpinning of cognitive science and the methods of anthropology and sociology, in an interdisciplinary study of design performance in the construction industry. Fieldwork is used as a method of qualitative data collection and this is examined within the analytic framework of distributed cognition. The results of this analysis provide a useful and usable description of the work of design that technology developers can use to support collaborative design work. In line with the methods of distributed cognition, the activities observed in the workplace studies are examined in terms of their processes and representations. The resources that were available to the design participants are made explicit, as are their situation-specific work patterns.
Two case studies of design are examined. The first of these describes design work in a civil engineering project, which involves a number of different design activities. The second describes the work of consulting engineers in building design, focusing on a more limited design role, which is used to back up and supplement areas of the first study that were understood to be particularly relevant.
The findings of the study demonstrate how design processes operate simultaneously at personal, organisational and inter-organisational levels. The distinction between the formal, organisational procedures, and the informal, social processes that compliment them is examined to show how these are interrelated in the performance of the design task and their importance to the mechanisms used to co-ordinate actions. The findings of the study have implications for the development of novel technologies to augment the engineering design process, and have already been used in the development of assistive design technologies.
The thesis demonstrates that the framework of distributed cognition can be used in the analysis of cognition within a setting, involving multiple individuals, in concert with 'natural' and 'artificial' artefacts. The thesis makes clear a number of processes in design that can only be examined from a perspective which includes the social dimensions of work. The methods of study focus on the resources in collaborative activities, whilst the analysis, structured in terms of the representations and processes of collaborative activity, shows that the method can be used effectively in the development of CSCW and CSCD technologies
Grothendieck Duality and D-modules via Diagonally Supported Sheaves
No full textWe study the !-pullback functor and the theory of (relative) D-modules along morphisms of qcqs schemes p_X : X → S which are almost of finite presentation and finite tor-amplitude. Key to our approach is the category of quasicoherent sheaves on X ×S X supported on the diagonal. In particular we indicate that “reduction formulae” can be used as foundations for the theory of Grothendieck Duality. We also set-up the theory of D-modules from scratch using this approach and show that in cases of overlap, it agrees with classical definitions using embeddings or the de Rham stack.PhDMathematicsUniversity of Michigan, Horace H. Rackham School of Graduate Studieshttp://deepblue.lib.umich.edu/bitstream/2027.42/194649/1/ndjiang_1.pd
Staging imagination: transformations of Shakespeare in Wordsworth and Coleridge
No full textThis thesis examines the ways that Wordsworth and Coleridge transform the works of Shakespeare, in order to stage the imagination as it functions in the lives of the characters in their poetry. I look especially at the importance of the play A Midsummer Night 's Dream to their poetic project, and show how elements of the play resurface in various poems, prefaces and prose writings of the two poets over a span of nearly twenty years. I argue that Wordsworth's transformations of Shakespeare contribute to a democratising of poetry, and a valorising of 'our common human heart'. Chapter one discusses Lyrical Ballads as a series of poems, which have Theseus' speech on Imagination as their unifying theme, emulating Shakespeare’s staging of passion. Chapters two and three examine Alexander Tytler's Essay on Translation as a 'negative' stimulus for Wordsworth's challenging poetic theories, and a source for some of his earliest 'transformations' of Shakespeare. Chapter four is a detailed survey of the critical background, and the Romantic reception of A Midsummer Night's Dream, and examines key themes in the play to elucidate the poets' poetry and prose. Chapter five is a comparison between 'The Last of The Flock' and The Merchant of Venice, showing how Wordsworth 'imitates' the tale, and transposes the 'tone' of the comic play into a quieter and sadder 'music'. Chapter six analyses 'Michael', as a transformation of Gaunt in Richard into the 'history homely and rude' of Michael the shepherd. Chapter seven is on Coleridge's Biographia Literaria, which re-tells the tale of the genesis of Lyrical Ballads, and Wordsworth's transformative poetics, as a 'translation' of A Midsummer Night’s Dream. Chapter eight returns to Alfoxden, and Hazlitt's 'First Acquaintance with Poets', to revisit the poets as the protagonists of 'the dream' that was, and became, Lyrical Ballads
The Form and Function of Self-Disclosure in Depressed Adolescents
No full textAdolescent depression is a major public health concern, prevalence estimates of which indicate that from 9.5% (Costello, Mustillo, Erkanli, Keeler, & Angold, 2003) to 11.7% (Merikangas et al., 2010) of adolescents may experience at some point; these depressive episodes have been linked to numerous physiological, psychological, educational and general functioning deficits. Although children and adolescents are known to be the subject of harsh stigmatizing beliefs (Perry, Pescosolido, Martin, McLeod, & Jensen, 2007), little research has been conducted on adolescents’ perceptions of mental health focused stigma experiences and coping mechanisms.
Stigma experiences such as those experienced by persons with Mental Health (MH) concerns can lead many to manage the disclosure of their potentially stigmatizing feature, often choosing to conceal those features which can be concealed (Wahl, 1999b). The Visibility Management (VM) concept seeks to explain some of the underlying processes in how individuals cope with stigma through the manipulation of disclosure, allowing them to decide who in their lives is emotionally “safe” to disclose to, versus who may react negatively to such disclosure (e.g., stigma), resulting in concealment. This project sought to explore the processes by which depressed adolescents engaged in VM within the relationships of those other persons whom they consider important.
This study of seven female adolescents with depression employed a multi-modal data gathering technique consisting primarily of qualitative interviews and utilized an innovative hand-on activity focused on the perceived strengths and weaknesses of the adolescent’s individualized social network. As a part of this process, I paid special attention to any reported incidences of the concept of a strategizing partner (Safe Other), reflecting a potential socially-based resource to depressed adolescents as originally described in the popular culture literature of the Autism Spectrum Disorder community. Subsequent between- and within-case analyses revealed that participants engaged in a complex decision-making process aimed at balancing their daily needs with the perceived burden their disclosure placed on others in their lives. This process often resulted in partial disclosure of their depression status. Finally, this work identified trends regarding the designation, utilization, and evaluation of a Safe Other indicating relevant directions for future research
Assessment of social functioning at the Orleans neighborhood centers New Orleans, Louisiana, 1967
No full text
Governance and economic growth
No full textBecause protection of property rights cannot be appropriated by any individual, it is widely recognized as being the state's responsibility. Moreover, recent empirical evidence suggests that protection of property rights leads to higher investment levels and faster growth. The extent of property rights protection differs significantly across countries. The author integrates the emergence of property rights within a simple growth framework. Drawing on North (1990), he presents a model where economic performance and enforcement of property rights may reinforce each other.Initial conditions determine the economy's convergence to a high-income or a low-income steady state. Existing empirical evidence offers tentative support for this theory.Judicial System Reform,Labor Policies,Economic Theory&Research,Environmental Economics&Policies,Common Property Resource Development,Economic Theory&Research,Inequality,Common Property Resource Development,Environmental Economics&Policies,Governance Indicators
Developing Reading Identities: Understanding Issues of Motivation within the Reading Workshop
No full textEmpirical evidence suggests a correlation between motivation and reading achievement as well as a decline in motivation as students progress through the grades. In order to address this issue, it is necessary to determine the instructional methods that promote motivation and identity development in reading. This study examines the motivation and the identity development of four fourth grade students as they experienced the reading workshop over the course of one year. Ford’s Motivational Systems Theory and Wenger’s Theory of Learning frame the study of student motivation and identity development within the reading workshop. Data related to motivation and identity development was collected weekly through student interviews, surveys, and conferences. A description of the context was gained through researcher observations and a teacher interview. Analysis of this data revealed that (1) Increased time spent reading self- selected books correlates positively to student motivation and identity development. (2) Increased responsive feedback from teachers and peers is correlated with increased motivation and reading identity development. (3) These elements form the crux of the reading workshop, which supports the notion that this model of instruction encourages motivation and identity development. (4) The correlation between motivation, identity development, and achievement is not evident in the context of this study. However, this correlation often emerges over time. This dissertation concludes with directions for future research, which may contribute to a further understanding of the relationship between student motivation, identity development and the reading workshop
- …
