8,501 research outputs found
Shoemaker-Lecy 9: " Dikkat! Yaklaşmayın Güneş Sistemi Tamirde" D. H. Levy
No full textBu çalışmada; 1994 yılının Temmuz ayında Jüpiter'e çarpan ünlü kuyrukluyıldız Shoemaker-Levy 9'un (SL9) dokuzuncu periyoduna kadar olan öyküsü, kuyrukluyıldızın yapısı ve başta astronomlar olmak üzere bütün dünyanın ona olan ilgisine değindik. Ayrıca, SL9'u keşfeden (Mart 1993) amatör astronomlar David Levy, Carolyn Shoemaker ve Eugene Shoemaker'ın amatör astronom kimlikleri ve SL9'un Jüpiter'de biten yolculuğu hakkındaki düşünceleri de bu çalışmada yer almaktadır.In this work, we examined the "Comet Shoemaker - Levy 9" (SL9) which impacts on Jupiter in July 1994. Addiationally, this work contains the story of discovery 'from SL9's until 9th period', general properties of SL9; the interest of the SL9 on world wide astronomers and, this magnificent comet's discoverers David Levy, Carolyn Shoemaker and Eugene Shoemaker's astronomer identity; their thoughts about SL9's destiny to Jupiter
Letter from David Babbitt to Ralph Cameron
No full textLetter from David Babbitt supporting the establishment of a post office in the Grand Canyon National Park
Effects of electrical charging on the mechanical Q of a fused silica disk
No full textWe report on the effects of an electrical charge on mechanical loss of a fused silica disk. A degradation of Q was seen that correlated with charge on the surface of the sample. We examine a number of models for charge damping, including eddy current damping and loss due to polarization. We conclude that rubbing friction between the sample and a piece of dust attracted by the charged sample is the most likely explanation for the observed loss.Michael J. Mortonson and Christophoros C. Vassiliou, David J. Ottaway, David H. Shoemaker and Gregory M. Harr
A defence of Mr. Garrick, in answer to the letter-writer. With remarks upon plays and players, and the present state of the stage. By a dramatic author [electronic resource].
No full textThe letter-writer = H. W., i.e. Edward Purdon, author of 'A letter to David Garrick, Esq; on opening the Theatre' published 13 October, 1759.Price from imprint: price One-Shilling.Electronic reproduction.English Short Title Catalog,Reproduction of original from British Library
Cult: A Composite Novel
No full textCult (redacted)
The first component of the thesis is a composite novel called Cult which falls into two parts with seven narratives in each. Part 1 tracks the protagonist, Ellen, from her first involvement with the cult through to her eventually leaving it. Although fiction, the first half of the book answers the kinds of questions the author is asked when people discover that she was once a sannyasin (a follower of the guru Bhagwan Shree Rajneesh). While the experiences of meditation, group therapy and communal living are all faithfully rendered within the stories, the need for strong characters, narrative drive and a lightness of touch takes precedence.
Part 2 picks up Ellen’s story some twenty or so years later and explores what becomes of her in middle age. It also looks at other groups in society, such as academia, the law and the internet dating community which each have their own jargon, hierarchies, rituals and rules but are not considered to be cults.
The book examines the question raised in the Epigraph, ‘how do we be together when we feel so alone’ with a focus on relationships other than the familial and the romantic.
Collisions, Chasms and Connections: a Performative Exploration of the Composite Novel Form
The second part of the thesis is both a critical and creative response to three contemporary American books: Olive Kitteridge by Elizabeth Strout; A Visit from the Goon Squad by Jennifer Egan; and Legend of a Suicide by David Vann. The critical element comprises a close reading of the three books; a chronological reconstruction of their overarching storylines; and a consideration of what their authors have said about writing the books. It concludes that, in the composite novel, the simultaneous presentation of multiple views and storylines operate much like a 3D image to give the impression of depth to the characters and situations rendered. The creative element of the essay is a playful and personal response to the texts
Causal properties and conservative reduction
No full textThe paper argues in favour of (1) a causal-functional theory of all properties including the physical ones and (2) a conception of properties as tropes or modes in the sense of particular ways that objects are. It shows how these premises open up a version of functionalism according to which the properties on which the special sciences focus are identical with configurations of physical properties and thereby causally efficacious without there being any threat of eliminativism
Polymer multimode waveguide optical and electronic PCB manufacturing
No full textThe paper describes the research in the £1.3 million IeMRC Integrated Optical and Electronic Interconnect PCB Manufacturing (OPCB) Flagship Project in which 8 companies and 3 universities carry out collaborative research and which was formed and is technically led by the author. The consortium’s research is aimed at investigating a range of fabrication techniques, some established and some novel, for fabricating polymer multimode waveguides from several polymers, some formulations of which are being developed within the project. The challenge is to develop low cost waveguide manufacturing techniques compatible with commercial PCB manufacturing and to reduce their alignment cost. The project aims to take the first steps in making this hybrid optical waveguide and electrical copper track printed circuit board disruptive technology widely available by establishing and incorporating waveguide design rules into commercial PCB layout software and transferring the technology for fabricating such boards to a commercial PCB manufacturer. To focus the research the project is designing an optical waveguide backplane to tight realistic constraints, using commercial layout software with the new optical design rules, for a demonstrator into which 4 daughter cards are plugged, each carrying an aggregate of 80 Gb/s data so that each waveguide carries 10 Gb/s
Personal identity and human animals: a new history and theory
No full textThe contemporary personal identity debate has divided into two entrenched positions. One supports the supposedly naive and unpopular Bodily Criterion (the view that personal identity requires physical continuity). The other school is the Psychological Criterion (the view that personal identity requires psychological continuity). This has acquired the status of virtual orthodoxy. The British Empiricists, John Locke and David Hume, are both supposed to give historical weight to this orthodoxy. This thesis argues this is a dramatic misrepresentation of history. Locke is supposed to found the personal identity debate in his Essay Concerning Human Understanding, arguing that personal identity is sameness of consciousness. It is argued that Locke in fact responds to a prevalent Cartesian View, called here the Compositional Account. The Compositional Account is the belief that a Human Being is composed of a Mind and a Body. Hume, in responding to Locke, is also responding to the Compositional Account. In opposition to widely established readings both philosophers are argued to be highly sympathetic to the Compositional Account. Chapter 1 establishes Descartes' version of the Compositional Account and explains why Descartes needs no philosophical treatment of personal identity. These problems emerge only for the Empiricists, Locke and Hume. Locke's sympathies for the Compositional Account are established in Chapter 2, drawing on material prior to the Essay and normally uncited passages in the Essay. Chapter 3 argues that Hume presumed the Compositional Account in his Treatise Concerning Human Nature. This is argued to explain Hume's famous later recantation of his theory. The thesis concludes by sketching a role for the Compositional Account in contemporary debate. The Compositional Account is argued to give strong support to a recently developed position known as Animalism. This provides the conceptual materials to move beyond the orthodox dichotomy between the Bodily Criterion and the Psychological Criterion
Book review of David Ellis’s Death & the Author: How D. H. Lawrence Died, and Was Remembered. Oxford: Oxford UP, 2008. 273 Pages. (Hardback, $39.95). ISBN: 978-0-19-954665-7
No full textThe article reviews the book Death & the Author: How D. H. Lawrence Died, and Was Remembered, by David Ellis
A model for the detection of moving targets in visual clutter inspired by insect physiology
No full textWe present a computational model for target discrimination based on intracellular recordings from neurons in the fly visual system. Determining how insects detect and track small moving features, often against cluttered moving backgrounds, is an intriguing challenge, both from a physiological and a computational perspective. Previous research has characterized higher-order neurons within the fly brain, known as 'small target motion detectors' (STMD), that respond robustly to moving features, even when the velocity of the target is matched to the background (i.e. with no relative motion cues). We recorded from intermediate-order neurons in the fly visual system that are well suited as a component along the target detection pathway. This full-wave rectifying, transient cell (RTC) reveals independent adaptation to luminance changes of opposite signs (suggesting separate ON and OFF channels) and fast adaptive temporal mechanisms, similar to other cell types previously described. From this physiological data we have created a numerical model for target discrimination. This model includes nonlinear filtering based on the fly optics, the photoreceptors, the 1(st) order interneurons (Large Monopolar Cells), and the newly derived parameters for the RTC. We show that our RTC-based target detection model is well matched to properties described for the STMDs, such as contrast sensitivity, height tuning and velocity tuning. The model output shows that the spatiotemporal profile of small targets is sufficiently rare within natural scene imagery to allow our highly nonlinear 'matched filter' to successfully detect most targets from the background. Importantly, this model can explain this type of feature discrimination without the need for relative motion cues.Steven D. Wiederman, Patrick A. Shoemaker, David C. O’Carrol
- …
