Experimental Determination of Sail Performance and Blockage Corrections

1997 ◽  
Author(s):  
Robert Ranzenbach ◽  
Chris Mairs
Keyword(s):  
United States ◽  
Wind Tunnel ◽  
Experimental Determination ◽  
The United States ◽  
Maryland College ◽  
Multi Stage ◽  
Analysis Of Results ◽  
College Park ◽  
The University

The United States Sailing Association (US SAILING), under the direction of Karl Kirkman, has undertaken a program of experimental determination of sail force coefficients for representative rigs which are intended to serve as the beginning of a multi-stage effort to better understand, and eventually predict, sail forces. US SAILING is the governing body of yacht racing in the United States and is interested in understanding and improving sail performance in support of its efforts to handicap racing yachts and to improve U.S. Olympic Sailing Team competitiveness. The Glenn L. Martin Wind Tunnel (GLMWT), located at the University of Maryland College Park, is participating in this sail force prediction project as part of the US SAILING University Research Program. The GLMWT effort is primarily in three areas which will be described in detail: 1.Development and evaluation of advanced wind tunnel boundary corrections schemes; 2. Model Test Rig design and construction, and GLMWT Main Tunnel Balance interface; 3.Plans for the determination of sail force coeffi­cients for a series of sail models provided by US SAILING and analysis of results. This initial entry will repeat tests performed by US SAILING at the University of Southampton.

Cooperation on GPS Meteorology between the United States and Cuba

2015 ◽  
Vol 96 (7) ◽  
pp. 1079-1088 ◽  
Author(s):  
Richard Anthes ◽  
Alan Robock ◽  
Juan Carlos Antuña-Marrero ◽  
Oswaldo García ◽  
John J. Braun ◽  
...  
Keyword(s):  
United States ◽  
Precipitable Water ◽  
The United States ◽  
Gps Receiver ◽  
Fidel Castro ◽  
American Meteorological Society ◽  
Maryland College ◽  
Gps Meteorology ◽  
College Park ◽  
The University

Abstract In May 2014 a team of atmospheric and geodetic scientists from UNAVCO and the University Corporation for Atmospheric Research (UCAR) sent and helped set up a global positioning system (GPS) receiver to measure atmospheric water vapor at the Grupo de Óptica Atmosférica de Camagüey (GOAC) at the Camagüey Meteorological Center in Camagüey, Cuba. The GPS receiver immediately began to produce observations of precipitable water, which are being shared with the international meteorological community. Obtaining permission from both sides to send a highly sensitive instrument from the United States to Cuba was not easy. This paper describes the series of events that led to this achievement, beginning with a North Atlantic Treaty Organization (NATO) workshop in Rome, Italy, in 1994 in which Alan Robock met a young Cuban scientist named Juan Carlos Antuña and accepted him as a graduate student at the University of Maryland, College Park. The GPS meteorology connection began with a March 2007 visit of a delegation from the United States headed by then American Meteorological Society (AMS) President Richard Anthes to Havana, Cuba, at the invitation of the Cuban Meteorological Society president, Andrés Planas. These two threads led to this remarkable cooperation between Cuban and U.S. scientists. Several visits to Cuba beginning in 2010 by Robock, who met former President of Cuba Fidel Castro and the science advisor to the president of Cuba, played a significant role. This is another instance (the visit of the AMS delegation to China in 1974 was a prime example) of how communication and visits between meteorologists in countries that are at odds on many other issues can lead to lasting collaborations that benefit both countries as well as the international community.

scholarly journals Value representation of freedom in the speech of contemporary English-language and Russian-language aging politicians

Litera ◽  
2020 ◽  
pp. 1-12
Author(s):  
Ekaterina Sergeevna Grishenkova ◽  
Larisa Georgievna Popova
Keyword(s):  
United States ◽  
United Kingdom ◽  
English Language ◽  
The United States ◽  
Russian Language ◽  
Comparative Linguistics ◽  
Process Comparison ◽  
Similarities And Differences ◽  
The University

The goal of this work consists in determination of similarities and differences in value characteristics of freedom expressed in the speech of senior age politicians of the United States, United Kingdom and Russia. The subject of this research is the semantics of English and Russian aphorisms that represent value understanding of freedom in the speech of aging politicians of the listed countries. The speech of senior people was selected due to the lack of studies on the matter within comparative linguistics. Based on the material of aphorisms of the famous aging politicians of the United States, United Kingdom and Russia, the author defines the composition of topical units and groups that reflect value understanding of freedom in the English and Russian languages. The scientific novelty lies in the establishment of similarities and differences in value characteristics of freedom in the speech of English-language and Russian-language aging politicians. As a result of the conducted analysis, it was revealed that in the speech of English-language and Russian-language aging politicians, freedom is rarely the topic of discussion, they rather create the own aphorisms and at times utilize aphorisms from the corresponding English and Russian glossaries. Most often, aging politicians discuss the questions related to practical manifestation of freedom, as well as touch upon reflection of the value of freedom as a phenomenon or a process. Comparison of the composition of aphorisms in Russian and English languages demonstrates that they differ for the most part. The author concludes on the specificity of topical units. The acquired results can be applied in the university lectures on comparative lexicology of English and Russian languages.

Wind Tunnel Testing of Offwind Sails

1999 ◽  
Author(s):  
Robert Ranzenbach ◽  
Chris Mairs
Keyword(s):  
Wind Tunnel ◽  
Operating Conditions ◽  
Methodology Development ◽  
University Of Maryland ◽  
Maryland College ◽  
Test Methodology ◽  
Major Development ◽  
College Park ◽  
The University ◽  
Development Tasks

The primary purposes of this offwind sail investigation were to better understand offwind sail performance and to improve the ability to predict the performance of specific offwind sail shapes over a broad range of operating conditions. The study was designed to allow sail designers to answer the following questions: What are the optimal types of sails over specific bands of operating conditions and how is this optimum affected by changes in the vertical distribution of sail area (girth), camber (shape), and twist? The specific goal was to demonstrate improvements in predicted sail performance over targeted narrow bands of operating conditions expected during various legs of the 1997-98 Whitbread Round The World Race™. To achieve this goal, two major development tasks were first completed by the Glenn L. Martin Wind Tunnel (GLMWT), located at the University of Maryland College Park: a. Model Test Rig Development; b. Test Methodology Development. Once these development tasks were completed, a broad range of offwind runners and reachers of varying design were evaluated over appropriate ranges of angle of attack and trim settings.

The Re-Education of a Pocha-Rican: How Latina/o Studies Latinized Me

2009 ◽  
Vol 79 (4) ◽  
pp. 601-610 ◽  
Author(s):  
Arelis Hernandez
Keyword(s):  
Higher Education ◽  
United States ◽  
The United States ◽  
Grade School ◽  
University Of Maryland ◽  
Student Leader ◽  
The Creation ◽  
College Park ◽  
The University

The story of Latinas/os in higher education in the United States is often one of exclusion and erasure. In this essay, Arelis Hernandez argues that, from grade school to college, there is rarely an occasion for Latinas/os to learn their history and to produce scholarship based on their communities. Instead, they are pressured to subscribe to a homogenizing paradigm of history that stresses assimilation and a negation of their particular stories. The author describes the movement initiated at the University of Maryland at College Park in the spring of 2008 for the institutionalization of a U.S. Latina/o studies minor. After the administration refused to recognize the legitimacy of Latina/o studies, students used insights from historical efforts to fight for equity to leverage the creation of a Latina/o studies program. A student leader of this movement, Hernandez examines the collaboration among faculty, staff, and allies to transform their campus. In the process, she explores her own transformation.

Thinking About Scots Law

1996 ◽  
Vol 1 (1) ◽  
pp. 3-24 ◽  
Author(s):  
Alan Rodger
Keyword(s):  
United States ◽  
Nineteenth Century ◽  
British Empire ◽  
United States Of America ◽  
Case Law ◽  
The United States ◽  
Memorial Lecture ◽  
University Of Edinburgh ◽  
The University

This article is the revised text of the first W A Wilson Memorial Lecture, given in the Playfair Library, Old College, in the University of Edinburgh, on 17 May 1995. It considers various visions of Scots law as a whole, arguing that it is now a system based as much upon case law and precedent as upon principle, and that its departure from the Civilian tradition in the nineteenth century was part of a general European trend. An additional factor shaping the attitudes of Scots lawyers from the later nineteenth century on was a tendency to see themselves as part of a larger Englishspeaking family of lawyers within the British Empire and the United States of America.

‘A Routh O’ Auld Nick-Nackets’ – the antiquarian collection of John Rae

2015 ◽  
Vol 36-37 (1) ◽  
pp. 163-183
Author(s):  
Paul Taylor
Keyword(s):  
United States ◽  
Nineteenth Century ◽  
Social Context ◽  
Moral Education ◽  
The United States ◽  
Representative Case ◽  
National Museums ◽  
The Individual ◽  
The University

John Rae, a Scottish antiquarian collector and spirit merchant, played a highly prominent role in the local natural history societies and exhibitions of nineteenth-century Aberdeen. While he modestly described his collection of archaeological lithics and other artefacts, principally drawn from Aberdeenshire but including some items from as far afield as the United States, as a mere ‘routh o’ auld nick-nackets' (abundance of old knick-knacks), a contemporary singled it out as ‘the best known in private hands' (Daily Free Press 4/5/91). After Rae's death, Glasgow Museums, National Museums Scotland, the University of Aberdeen Museum and the Pitt Rivers Museum in Oxford, as well as numerous individual private collectors, purchased items from the collection. Making use of historical and archive materials to explore the individual biography of Rae and his collection, this article examines how Rae's collecting and other antiquarian activities represent and mirror wider developments in both the ‘amateur’ antiquarianism carried out by Rae and his fellow collectors for reasons of self-improvement and moral education, and the ‘professional’ antiquarianism of the museums which purchased his artefacts. Considered in its wider nineteenth-century context, this is a representative case study of the early development of archaeology in the wider intellectual, scientific and social context of the era.

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