Ferro-inductance as a variable electric circuit element

The field of ferro-inductance has been much neglected for many years. This investigation was instituted in an attempt to develop methods which would make ferro-inductive circuits as susceptible of analysis as circuits with constant parameters;The work has led to the development of an accurate empirical equation for the magnetization curve of a steel. This equation has been applied in predicting the inductance of a ferro-inductor at any value of current, and methods have been developed for the measurement of this inductance, these methods checking the theory closely;The equation for ferro-inductance has been generalized into a relation for effective ferro-reactance by an assumption, and experimental evidence has been obtained to support the validity of the assumption. Methods were also developed for calculating the effective resistance of an iron-cored reactor. Application was then made of both of these developments in calculating the impedance of circuits containing ferro-reactors, and the results were again well supported by experimental evidence. The latter calculations have apparently never been possible before;Another application of ferro-reactance was made to the ferro-resonant circuit, and simple relations for resonant voltage, capacity required, and the value of the critical resistance developed. These were all checked by experiment to a satisfactory degree of accuracy. Analytic methods for these solutions were not previously available in simple form

Examining the pre-event dietary habits of collegiate golfers

Little research has been conducted in regards to nutritional concerns of golfers. This project will ask collegiate golfers to fill out a detailed 24-hour recall of what they typically consume the day prior to competition. After completion of these recalls, aggregate nutrition data, specifically macronutrient intake, will be taken. Observations of the data as well as a discussion in regards to the typical consumption will be made

The Effect of Tropical Cyclones on Climate Change Engagement

Personal experience can influence our attitudes and actions concerning climate change. This paper examines the experience-perception link in relation to tropical cyclones using a distinctly revealed preference approach, mitigating biases of prior research in this area. Specifically, we study how people alter their internet searches related to climate change in response to tropical cyclones. Using data for the United States 2006–2012, results suggest that searches related to climate change increase with a lag in the months following an event. This finding indicates that the people are connecting tropical cyclones to the broader narrative of climate change in the aftermath of an event and there may be a window of opportunity for building public support for policy action

Notes and Letters

A Comment on 1904: Tolkien, Trauma, and its Anniversaries . A letter responding to Nancy Bunting’s provocative article on Tolkien’s traumatic family history in Mythlore #127. By John Rosegrant. Jean Louise to the Dark Tower Came. Explicates a pattern of references to Browning’s “Childe Roland” in Harper Lee’s recently published Go Set a Watchman. By Debra Polesiak. American Survivor: William Faulkner\u27s A Fable. Draws our attention to American World War I veteran William Faulkner’s A Fable as an example of the fantastic in response to the war’s trauma. By Ryder W. Miller

Classical Physics and Quantum Loops

The standard picture of the loop expansion associates a factor of h-bar with each loop, suggesting that the tree diagrams are to be associated with classical physics, while loop effects are quantum mechanical in nature. We discuss examples wherein classical effects arise from loop contributions and display the relationship between the classical terms and the long range effects of massless particles.Comment: 15 pages, 3 figure

The Cordilleran Ice Sheet and the Glacial Geomorphology of Southern and Central British Colombia

This paper reviews the current state of knowledge about the Cordilleran Ice Sheet in southern and central British Columbia. Reconstructions of the ice sheet and the styles of ice expansion and déglaciation are based on extensive and varied glacigenic sediments and landforms that date from Late Wisconsinan (Fraser) Glaciation. Late-glacial lakes and sea level changes are also described and related to isostatic and eustatic effects. The timing of ice expansion and recession during Fraser Glaciation was markedly asymmetric: ice build-up commenced about 29 000 years BP, culminated between 14 500 and 14 000 years BP1 and déglaciation was largely completed by 11 500 years BP. Most of this interval appears to have been dominated by montane glaciation, which produced striking erosional landforms. A Cordilleran Ice Sheet existed from only about 19 000 to 13 500 years BP. An older glaciation, probably of Early Wisconsinan age, has been recognized from widespread exposures of drift that underlies Middle Wisconsinan non-glacial sediments. Pre-Wisconsinan drift is present near Vancouver. Drifts of late Tertiary to Middle Pleistocene age have been dated by association with volcanic sequences in the southern Coast Mountains and the central Interior, and by paleomagnetic studies in the southern Interior.On résume ici l'état des connaissances sur l'Inlandsis de la Cordillère du sud et du centre de la Colombie-Britannique. Les reconstitutions de l'inlandsis et les modes d'englaciation et de déglaciation sont fondés sur les formes et les sédiments glaciaires qui datent de la glaciation du Wisconsinien supérieur (Fraser). On décrit également les lacs tardiglaciaires et les changements du niveau marin en relation avec les conséquences sur les niveaux isostatique et eustatique. Les rythmes de la progression et du retrait glaciaire ont été tout à fait différents; la giaciation a commencé vers 29 000 BP, a connu son optimum entre 14 500 et 14 000 BP et la déglaciation était à toutes fins utiles terminée dès 11 500 BP. La plus grande partie de cette époque a été dominée par une glaciation de type alpin, qui a engendré des formes d'érosion remarquables. L'Inlandsis de la Cordillère n'a existé que de 19 000 à 13 500 BP. On a identifié une glaciation plus ancienne, probablement du Wisconsinien inférieur, à partir des affleurements répandus de dépôts glaciaires sous-jacents aux sédiments non glaciaires du Wisconsinien moyen. On a observé des dépôts glaciaires pré-wisconsiniens près de Vancouver. Les dépôts glaciaires datant du Tertiaire supérieur au Pleistocene moyen ont été datés par association aux séquences volcaniques du sud des montagnes Côtières et du centre de l'Intérieur et grâce à des études de paléomagnétisme menées dans le sud du système de l'Intérieur.Dieser Artikel gibt einen uberblick ûber den gegenwartigen Forschungsstand zur Kordilleren-Eisdecke im Sùden und im Zentrum von British Columbia. Die Rekonstruktionen der Eisdecke und der Art und Weise der Eisausdehnung und Enteisung stùtzen sich auf extensive und mannigfache glazigene Sedimente und Landformen, die aus der Spât-Wisconsin- (Fraser) Vereisung stammen. Spàtglaziale Seen und Meeresniveauwechsel werden auch beschrieben und in Beziehung zu isostatischen und eustatischen Auswirkungen gesetzt. Der zeitliche Ablauf der Eisausdehnung und des Eisrùckzugs wàhrend der Fraser-Vereisung war deutlich asymmetrisch : die Vereisung begann um etwa 29 000 Jahre v.u.Z., erreichte ihren Hôchststand zwischen 14 500 und 14 000 Jahren v.u.Z. und die Enteisung war weitgehend vollendet um 11 500 Jahre v.u.Z. Der grôfîte Tail dieses Zeitraums scheint von einer alpinen Vereisung beherrscht gewesen zu sein, welche eindrucksvolle Erosions-Landformen hervorbrachte. Eine Kordilleren-Eisdecke existierte nur von etwa 19 000 bis 13 500 Jahre v.u.Z. Eine altère Vereisung, môglicherweise aus dem frùhen Wisconsin konnte anhand ausgedehnter Anlagen von glazialen Ablagerungen, die sich unter nichtglazialen Sedimenten des mittleren Wiskonsin befinden, identifiziert werden. Abgelagerte Bildungen aus dem Spàttertiâr bis zum mittleren Pleistozân wurden in Verbindung mit vulkanischen Sequenzen in den Bergen der Sùdkùste und dem zentralen Landesinnern und mittels palàomagnetischen Studien im sûdlichen Landesinnern datiert

UNSWIRF: A Tunable Imaging Spectrometer for the Near-Infrared

We describe the specifications, characteristics, calibration, and analysis of data from the University of New South Wales Infrared Fabry-Perot (UNSWIRF) etalon. UNSWIRF is a near-infrared tunable imaging spectrometer, used primarily in conjunction with IRIS on the AAT, but suitable for use as a visitor instrument at other telescopes. The etalon delivers a resolving power in excess of 4000 (corresponding to a velocity resolution ~75 km/s), and allows imaging of fields up to 100" in diameter on the AAT at any wavelength between 1.5 and 2.4 microns for which suitable blocking filters are available.Comment: 16 pages, 10 figures, uses psfig.sty and html.sty (included). To appear in Publications of the Astronomical Society of Australi