181,661 research outputs found
The Swift satellite and redshifts of long gamma-ray bursts
No full textUntil 6 October 2005 sixteen redshifts had been measured of long gamma-ray bursts discovered by the Swift satellite. Further 45 redshifts have been measured of the long gamma- ray bursts discovered by other satellites. Here we perform five statistical tests comparing the redshift distributions of these two samples assuming as the null hypothesis an identical distribution for the two samples. Three tests (Student's t-test, Mann-Whitney test, Kolmogorov-Smirnov test) reject the null hypothesis at significance levels between 97.19 and 98.55%. Two different comparisons of the medians show extreme (99.78 - 99.99994)% significance levels of rejection. This means that the redshifts of the Swift sample and the redshifts of the non-Swift sample are distributed differently - in the Swift sample the redshifts are on average larger. This statistical result suggests that the long GRBs should on average be at the higher redshifts of the Swift sample
EL FUTURO DE APPLE: SWIFT VERSUS OBJECTIVE-C
No full textHace unos meses Apple presentó un nuevo lenguaje de programación para sus plataformas: Swift. Con Swift, Apple pretende atraer a los programadores de los lenguajes de programación basados en la sintaxis de C++ y darles una mayor abstracción, que con Objective-C, para que sea más fácil programar para las plataformas de Apple. Por estas razones, se hace necesario contrastar lo pretendido por Apple y realizar un estudio del lenguaje de programación a fin de contrastar su objetivo. Para ello, se hicieron dos evaluaciones, una cualitativa y otra cuantitativa, con el propósito de verificar en qué medida Swift es un avance respecto a Objective-C.DThe Future of Apple: Swift Versus Objective-CABSTRACTFew months ago, Apple presented a new programming language: Swift. With Swift, Apple pretends to attract the programmers of the programming languages based on C++ syntax and gives them a higher abstraction than with Objective-C for being easier to programme to Apple’s platforms. For these reasons, it is necessary to contrast what is intended by Apple and do a study of the programming language to ascertain their goal. For this purpose, we did two evaluations, firstly a qualitative evaluation and after, a quantitative evaluation to verify in how much Swift is an advance with respect to Objective-C.Keywords: computer languages, computer programming, functional programming, object oriented programming, programming, software.</p
Letter from J. Trumbull Swift to Oliver C. Morse (October 6, 1890)
No full textA letter written by J. Trumbull Swift to Oliver C. Morse. The letter is dated October 6, 1890. In the letter Swift accepts a position as Corporator for the YMCA Training School.This item is part of a folder that has been cataloged and is in the Springfield College Learning Commons holdings, see here: https://springfieldcollege.on.worldcat.org/oclc/85164088
Laughing Them Into Religion: A Comparison of the Contexts, Causes, and Effects of Jonathan Swift's A Tale of A Tub and C. S. Lewis's The Screwtape Letters
No full textJonathan Swift and C. S. Lewis had extraordinary similarities in their lives up to their respective writings of Tale of A Tub and The Screwtape Letters. Beyond the biographical parallels, there were great similarities in the religious, historical, and political contexts surrounding the two works, even though they were published 237 years apart. These facts have been ignored by scholars, yet more important than the similitude is what Swift and Lewis did differently in spite of it. These differences represent deliberate choices each author made and provide greater insights about them and these seminal works. Both of these brilliant men became convinced that their societies needed a rebirth of spirituality and chose highly creative religious satire to convey their respective messages and “laugh us into religion.”Master of Arts (MA)Englis
Miscellanies. [electronic resource] : By Dr. Swift. The Eleventh Volume.
No full textWith a half-title at the end: 'The works of Doctor Swift. Volume the thirteenth'.Sigs.T-X have horizontal chain lines.MRu report 2 extra leaves of music at the endTeerink-Scouten,Electronic reproduction.English Short Title Catalog,Reproduction of original from British Library
The bionomics of swift moths I The ghost swift moth, Hepialus humuli (L.)
No full textThe larvae of two species of swift moths, Hepialus humuli (L.) and H. lupulinus (L.), live in the soil and are common under grass in the British Isles, but do not usually have any obvious effect upon the grass. The larvae of H. humuli are polyphagous and when they occur under agricultural or horticultural crops they may cause damage by feeding on the roots. Lettuce, strawberry and chrysanthemum are most frequently damaged.The adults, which are described, fly at dusk, the female seeking the male. The female lays between 200 and 1,600 eggs, with a mean of about 600, over a period of four days. Sweep-net catches showed the ratio of the sexes to be approximately equal, and mercury-vapour light-trap catches showed that the flight period in southern England is principally in June.In the laboratory, never less than 80 per cent, of eggs hatched, even in dry air, and the shortest incubation period, between 11 and 24 (mean 18) days, was at 20°C. At 5°C. they did not hatch, but remained viable for at least six months.The larvae were reared in small cells drilled in blocks of plaster of Paris, which were stood in a tray of water, or in vials containing a layer of moist plaster of Paris, and were fed on pieces of carrot.The growth of the larval head capsules was geometric and allowed 12 instars to be distinguished at 15°C.; at higher temperatures there may be more.The growth curve of the larvae was S-shaped with a very distinct fall in weight in each instar for several days before moulting. The daily intake of food was weighed, and the conversion rate shown to be small, ranging from 0·00058 to 0·04, as compared with 0·205 to 0·49 recorded for other Lepidopterous larvae.At 5°C., larvae did not develop beyond the second instar, nor beyond the fourth at 10°C. The optimum temperature for their development (mean period 224 days) was 15°C., although mortality was high. They developed at 20°C. more rapidly (mean 197 days) but more died. Larvae kept in a container sunk in the soil outdoors developed more slowly than those at 15°C. and had only reached the eighth instar by February (239 days after hatching). This evidence, together with that from an artificially infested plot in the field and general field observations, suggests that the usual life-cycle lasts two years
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