Some Physical Constants of the Lunar Surface as Indicated by its Radar Scattering and Thermal Emission Properties

1962 ◽  
Vol 14 ◽  
pp. 533-543
Author(s):  
T. B. A. Senior ◽  
K. M. Siegel ◽  
A. Giraud
Keyword(s):  
Lunar Surface ◽  
Thermal Emission ◽  
University Of Michigan ◽  
Emission Data ◽  
Physical Constants ◽  
The Past ◽  
Radar Scattering ◽  
The Subject ◽  
The University ◽  
Radiation Laboratory

The purpose of this paper is to summarize some of the results of lunar studies carried out in the Radiation Laboratory of The University of Michigan during the past 3 years. Apart from an associated program which is the subject of a later paper [1] by Fensleret al., these studies have been confined mainly to an analysis of radar scattering and thermal emission data, but in the course of this work, values have been obtained for some of the physical constants of the lunar surface.

Novae in the Magellanic Clouds

1979 ◽  
Vol 46 ◽  
pp. 96-101
Author(s):  
J.A. Graham
Keyword(s):  
Large Magellanic Cloud ◽  
Magellanic Cloud ◽  
Magellanic Clouds ◽  
University Of Michigan ◽  
The Past ◽  
Spectroscopic Information ◽  
Objective Prism ◽  
The University ◽  
Small Cloud ◽  
Low Dispersion

During the past several years, a systematic search for novae in the Magellanic Clouds has been carried out at Cerro Tololo Inter-American Observatory. The Curtis Schmidt telescope, on loan to CTIO from the University of Michigan is used to obtain plates every two weeks during the observing season. An objective prism is used on the telescope. This provides additional low-dispersion spectroscopic information when a nova is discovered. The plates cover an area of 5°x5°. One plate is sufficient to cover the Small Magellanic Cloud and four are taken of the Large Magellanic Cloud with an overlap so that the central bar is included on each plate. The methods used in the search have been described by Graham and Araya (1971). In the CTIO survey, 8 novae have been discovered in the Large Cloud but none in the Small Cloud. The survey was not carried out in 1974 or 1976. During 1974, one nova was discovered in the Small Cloud by MacConnell and Sanduleak (1974).

scholarly journals Development of mini-undulators for a table-top free-electron laser

2018 ◽  
Vol 36 (3) ◽  
pp. 396-404
Author(s):  
G. Petrov ◽  
J. Davis ◽  
W. Schumaker ◽  
M. Vargas ◽  
V. Chvykov ◽  
...  
Keyword(s):  
Free Electron ◽  
Permanent Magnets ◽  
Laser Machining ◽  
University Of Michigan ◽  
X Ray ◽  
The Past ◽  
Laser Wakefield ◽  
Electron Propagation ◽  
The University ◽  
Compact Sources

AbstractThe development of laser wakefield accelerators (LWFA) over the past several years has led to an interest in very compact sources of X-ray radiation – such as “table-top” free electron lasers. However, the use of conventional undulators using permanent magnets also implies system sizes which are large. In this work, we assess the possibilities for the use of novel mini-undulators in conjunction with a LWFA so that the dimensions of the undulator become comparable with the acceleration distances for LWFA experiments (i.e., centimeters). The use of a prototype undulator using laser machining of permanent magnets for this application is described and the emission characteristics and limitations of such a system are determined. Preliminary electron propagation and X-ray emission measurements are taken with a LWFA electron beam at the University of Michigan.

scholarly journals Why to build university spaces? How to discuss them? Appearance of a new lens

2021 ◽  
Vol 6 (12) ◽  
Author(s):  
Aslı Alanlı
Keyword(s):  
Learning Process ◽  
Extreme Points ◽  
Communication Technologies ◽  
The Past ◽  
Subject And Object ◽  
The Subject ◽  
The 1960S ◽  
University Spaces ◽  
The University

Since the 1990s, the university space has been the subject of many discussions due to the introduction of communication technologies to the learning process,which has become significantly visible after the effects of the COVID-19 pandemic nowadays. These debates focus on the two extreme points ofwhether university space is necessary or not. In this regard, this research claims that the arguments on this topic are based on subject-object duality. It aims to develop a ground covering the discussions that oscillate between the two extremes by referring to sociomateriality, which advocates the interwovenness of subject and object. Adopting a retrospective perspective, itrediscovers the debates from the 1960s at the onto-epistemological levelthrough a sociomaterial lens. Finally, it situates the discussion on university space within the past-present-future dialogue.

The Present Status of Chemical Methods for Dating Prehistoric Bone

1953 ◽  
Vol 18 (4) ◽  
pp. 354-358 ◽  
Author(s):  
S. F. Cook ◽  
R. F. Heizer
Keyword(s):  
Fluorine Content ◽  
Considerable Effort ◽  
General Survey ◽  
Fossil Bone ◽  
Chemical Methods ◽  
Joint Project ◽  
The Past ◽  
Anthropological Research ◽  
The Subject ◽  
The University

It is now over half a century since Carnot (1893) published his pioneer work dealing with the chemical analysis of fossil bone. In the intervening decades the problem has been investigated by occasional students who have approached the field from different directions. Recently interest in chemical methods has been intensified and the attention of archaeologists has been brought to a focus by the attempt of Oakley (1951) to utilize the fluorine content of human bones as a criterion of age. Also during the past few years a joint project has been pursued by the Departments of Anthropology and Physiology at the University of California (Berkeley) through the generosity of the Wenner-Gren Foundation for Anthropological Research. Thus a considerable effort has been expended, and a reasonable volume of results are on record, with reference to the chemical changes which occur in fossil bone. At the present time it appears that a general survey of this work is in order, together with an appraisal of its value as a tool for the archaeologist and palaeontologist. Fairly comprehensive listings of published works on the subject of bone fossilization occur in Heizer (1950, 1952).

scholarly journals Students’ Perception towards the Use of Worksheet as Helping Tools in Semantics Class

2020 ◽  
Vol 8 (2) ◽  
pp. 647-657
Author(s):  
Sri Damayanti ◽  
Irwan Irwan ◽  
Jusriati Jusriati
Keyword(s):  
Data Reduction ◽  
Positive Response ◽  
Descriptive Study ◽  
English Department ◽  
Motivation To Learn ◽  
Data Display ◽  
The Past ◽  
The Subject ◽  
The University ◽  
Question And Answering

The writer set the problem of this research such as how is the students’ perception toward the use of worksheet as helping tools in semantics class? and what are the advantages of using a worksheet? The aim of this study is to describe the students’ perception of the use of worksheets as helping tools in semantics class and to find the advantages of using it. The subject of this research is the fifth-semester students in the English Department at the University of Cokroaminoto Palopo. The method of this study is a descriptive study. The procedures of collecting data are giving questionnaires and interviews and then the writer analyzed the data by adopting Matthew B. Miles and A. Michael Huberman's pattern. There were three steps; data reduction, data display, and conclusion. After that, the writer tabulated the gained data in making the description of the data. The result of this study shows; (1) Students are giving positive and good perception on the use of worksheet as helping tools in semantics class and (2) The advantage of using the worksheet as helping tools in teaching semantics are; it helped the students in understanding the question and answering the question easily, it also helped them in remembering the past material by using the worksheet and it gave them some motivation to learn English Semantics. So, it can be concluded that the use of worksheets as helping tools in semantics class got a positive response from the students and it also gave them some advantages. 

The Past in the Present? A Response to Stan's Cafe's Revival of ‘The Carrier Frequency’

2000 ◽  
Vol 16 (1) ◽  
pp. 97-99
Author(s):  
Frances Babbage
Keyword(s):  
Carrier Frequency ◽  
The Past ◽  
Theatre Company ◽  
Theatre Studies ◽  
The Subject ◽  
And Performance ◽  
The University

The premiere of The Carrier Frequency took place in 1984, the result of a collaboration between Leeds-based Impact Theatre Cooperative and the novelist Russell Hoban. Impact was founded in 1978 by Claire MacDonald, Pete Brooks, Steve Schill, Graeme Miller, Tyrone Huggins, and Richard Hawley, with Nikki Johnson and Heather Ackroyd joining in subsequent years. Many companies since have cited Impact as a major inspiration, with The Carrier Frequency in particular achieving almost mythic status. Today, Impact has long since disbanded, and little documentation of their work remains to enable their legacy to be passed on. In April 1999, the theatre company Stan's Cafe (none of whom had seen the original show) decided to restage The Carrier Frequency as part of Birmingham's ‘Towards the Millennium’ festival; in association with this project, a symposium was held on the subject of ‘Archaeology, Repertory, and Theatre Inheritance’. What follows is a personal response to the experience of attending the symposium and performance, and records a variety of attitudes towards myth-making, re-creation, and the potential and problems of documentation. Frances Babbage lectures in Theatre Studies at the University of Leeds.

Spaces of Autonomy, Spaces of Hope: The place of the university in post-colonial Singapore

2018 ◽  
Vol 53 (2) ◽  
pp. 451-482
Author(s):  
PHILIP HOLDEN
Keyword(s):  
State Government ◽  
Prime Minister ◽  
Post Colonial ◽  
The Past ◽  
Vice Chancellor ◽  
National University ◽  
The Subject ◽  
The University ◽  
Party State

AbstractThis article explores the background to and consequences of the resignation of B. R. Sreenivasan as the vice-chancellor of the University of Singapore in October 1963, after a public clash with the People's Action Party state government, led by Prime Minister Lee Kuan Yew. Sreenivasan's resignation has been the subject of radically different historical interpretations. It has been celebrated by some nationalist historians as part of a process of cultural decolonization, but criticized by others as precipitating a two-decades long erosion of academic freedom in Singapore. Careful attention to the event and its context, however, offers a powerful heuristic concerning the place of higher education in the process of decolonization, and the manner in which colonial universities came to be symbolic repositories of nationalism that enjoyed some degree of autonomy from the state. Debates on the role of the university that arose in Singapore after the resignation were plural, and diverse, and have much to teach us not only about the past, but also about a future in which international research universities such as the National University of Singapore embrace contradictory roles and yet still strive for new forms of academic autonomy.

VI.—Recent Discoveries in the Bodleian Library

Archaeologia ◽  
1967 ◽  
Vol 101 ◽  
pp. 151-168 ◽  
Author(s):  
J. N. L. Myres
Keyword(s):  
Bodleian Library ◽  
The West ◽  
City Wall ◽  
External Appearance ◽  
The Past ◽  
The North ◽  
Divinity School ◽  
The Subject ◽  
The University ◽  
The City

The group of medieval and seventeenth-century buildings which forms the subject of this paper lies in the centre of academic Oxford, between the site of the city wall on the north, Exeter College and its garden on the west and south, and the old Schools Quadrangle on the east. It constitutes indeed the heart of the medieval university. In writing to Humphrey, duke of Gloucester, on 14th July 1444 the authorities described the site as eminently suitable for a library because it was somewhat remote from secular noises. In spite of a marked increase in secular noises over the past 500 years in traffic-ridden Oxford, this description remains substantially true today. The buildings, erected then and later, remain in external appearance almost exactly as they are depicted in David Loggan's Oxonia Illustrate. of 1675 (pl. xxvii). They comprise the Divinity School, for which the university was already collecting money and laying the foundations in 1423 ; Duke Humphrey's Library, built over it in the forty-five years following the letter to Duke Humphrey of 1444; Arts End and the Proscholium added at right angles to the east by Sir Thomas Bodley in 1610–12; and Selden End with the Convocation House below, attached similarly to the west in 1637–40. The three upper rooms, Duke Humphrey, Selden End, Arts End, form the core of the ancient buildings of the Bodleian Library: they have been continuously in use for library purposes for between 320 and 360 years.

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