Recent Developments in Sonic-Boom Simulation Using Shock Tubes

1974 ◽  
Vol 52 (3) ◽  
pp. 207-218 ◽  
Author(s):  
J. J. Gottlieb ◽  
I. I. Glass
Keyword(s):  
Shock Tube ◽  
The United States ◽  
Sonic Boom ◽  
Practical Case ◽  
Shock Tubes ◽  
Constant Area ◽  
Recent Developments ◽  
Tube Type ◽  
Societal Problems ◽  
N Wave

Gasdynamic and acoustic analyses were performed in order to provide greater insight into the operation of sonic-boom simulators utilizing shock-tube drivers. Three basic shock tubes were considered; each had a pyramidal driver joined at the diaphragm station to a pyramidal channel of the same divergence angle (pyramidal shock tube), or of a different angle, or joined to a constant-area channel. Classical acoustic theory was applied to obtain new analytical solutions to describe the wave motion in such facilities, in agreement with experimental data. In addition, a detailed study of the nonlinear generation and propagation features of the N wave was made for the important and practical case of the pyramidal shock tube. The work described above is of current interest as shock-tube-type facilities are in present use in France, Germany, England, the United States, and Canada to assess societal problems associated with sonic boom.

Why Diamonds Really are a Girl's Best Friend: Another American Narrative

Daedalus ◽  
2012 ◽  
Vol 141 (1) ◽  
pp. 89-100
Author(s):  
Linda K. Kerber
Keyword(s):  
The United States ◽  
Cultural Practice ◽  
Legal Tradition ◽  
Domestic Relations ◽  
Recent Developments ◽  
American Law ◽  
History Of ◽  
The Republic ◽  
1960S And 1970S ◽  
The 1960S

The old law of domestic relations and the system known as coverture have shaped marriage practices in the United States and have limited women's membership in the constitutional community. This system of law predates the Revolution, but it lingers in U.S. legal tradition even today. After describing coverture and the old law of domestic relations, this essay considers how the received narrative of women's place in U.S. history often obscures the story of women's and men's efforts to overthrow this oppressive regime, and also the story of the continuing efforts of men and some women to stabilize and protect it. The essay also questions the paradoxes built into American law: for example, how do we reconcile the strictures of coverture with the founders' care in defining rights-holders as “persons” rather than “men”? Citing a number of court cases from the early days of the republic to the present, the essay describes the 1960s and 1970s shift in legal interpretation of women's rights and obligations. However, recent developments – in abortion laws, for example – invite inquiry as to how full the change is that we have accomplished. The history of coverture and the way it affects legal, political, and cultural practice today is another American narrative that needs to be better understood.

scholarly journals The War on Sex Offenders: Community Notification in Perspective

2001 ◽  
Vol 34 (3) ◽  
pp. 256-276 ◽  
Author(s):  
Lyn Hinds ◽  
Kathleen Daly
Keyword(s):  
United States ◽  
Sex Offenders ◽  
Sex Offender ◽  
The United States ◽  
Community Notification ◽  
Megan's Law ◽  
The Public ◽  
Public Campaign ◽  
Recent Developments ◽  
Naming And Shaming

This article explores the contemporary phenomenon of “naming and shaming” sex offenders. Community notification laws, popularly known as Megan's Law, which authorise the public disclosure of the identity of convicted sex offenders to the community in which they live, were enacted throughout the United States in the 1990s. A public campaign to introduce “Sarah's Law” has recently been launched in Britain, following the death of eight-year old Sarah Payne. Why are sex offenders, and certain categories of sex offenders, singled out as targets of community notification laws? What explains historical variability in the form that sex offender laws take? We address these questions by reviewing the sexual psychopath laws enacted in the United States in the 1930s and 40s and the sexual predator and community notification laws of the 1990s, comparing recent developments in the United States with those in Britain, Canada, and Australia. We consider arguments by Garland, O'Malley, Pratt, and others on how community notification, and the control of sex offenders more generally, can be explained; and we speculate on the likelihood that Australia will adopt community notification laws.

Christian Doctrine and Free Church Ecclesiology: Recent Developments among Baptists in the Southern United States

Ecclesiology ◽  
2011 ◽  
Vol 7 (2) ◽  
pp. 195-219
Author(s):  
Paul Fiddes
Keyword(s):  
United States ◽  
Southern Baptist ◽  
The United States ◽  
Southern United States ◽  
Recent Book ◽  
Christian Doctrine ◽  
Free Church ◽  
Recent Developments ◽  
Local Manifestation ◽  
The Church

AbstractThe main substance of this article is an extended review of a recent book by a Southern Baptist historical theologian, Malcolm Yarnell, entitled The Formation of Christian Doctrine, which aims to root the development of doctrine in a free-church ecclesiology. This review offers the opportunity to examine a spectrum of ecclesiologies that has recently emerged among Baptists in the Southern region of the United States of America. Four 'conservative' versions of ecclesiology are identified, which are named as 'Landmarkist', 'Reformed', 'Reformed-Ecumenical' and 'Conservative Localist'. Four 'moderate' versions are similarly identified, and named as 'Voluntarist', 'Catholic', 'Moderate Localist' and 'World-Baptist'. While these categories are not intended to be mutually exclusive, the typology is useful both in positioning Yarnell's particular thesis, and in making comparisons with recent Baptist ecclesiology in Great Britain, which has focussed on the concept of covenant. Yarnell's own appeal to covenant is unusual in Southern Baptist thinking, and means that he cannot be easily fitted into the typology suggested. Though he belongs most evidently to the group named here as 'Conservative Localists', and is overtly opposed to any concept of a visible, universal church except in an eschatological sense, it is suggested that his own arguments might be seen as tending towards a more 'universal' view of the reality of the church beyond its local manifestation. His own work thus offers the promise that present polarizations among Baptists in the southern United States might, in time, be overcome.

Commentary: the Banking Crisis and the Economy

2008 ◽  
Vol 204 ◽  
pp. 4-8 ◽  
Author(s):  
Martin Weale
Keyword(s):  
United Kingdom ◽  
Financial Services ◽  
Banking Crisis ◽  
The United States ◽  
Second World War ◽  
Recent Experience ◽  
Bank Rate ◽  
The United Kingdom ◽  
Recent Developments ◽  
Second World

The past few weeks have seen an intensification of the banking crisis in the United States, with the near failure of Bear Sterns, although some commentators hopefully say that the worst has now passed. In the United Kingdom the gap between the Bank Rate and money market rates has re-opened and is described as indicative of a reluctance of banks to lend to each other. In this commentary we seek to explain the fundamental factors behind recent developments in UK lending markets. We begin by describing the recent experience of the financial services industry in the United Kingdom and putting the crisis, which has been described as the worst since the Second World War, into some sort of perspective.

The Impact of Solar Winds on Navigation Aids

1999 ◽  
Vol 52 (1) ◽  
pp. 42-46 ◽  
Author(s):  
W. H. Sandford
Keyword(s):  
Solar Wind ◽  
Media Coverage ◽  
Scientific Community ◽  
The United States ◽  
Public Attention ◽  
Remote Imaging ◽  
Solar Winds ◽  
New Information ◽  
Recent Developments ◽  
The Impact

Recent developments in remote imaging equipment carried on satellites have given the scientific community a vast amount of new information about the Sun and its atmosphere. Media coverage of the remarkable discoveries accompanied by impressive images of the Sun's atmosphere, and linkage to the loss of a television satellite over the United States, have focused public attention on the existence and effects of the Solar Wind. This paper sets out to illustrate the impact of the Solar Wind on radio aids to navigation, and to look at the possible effects on present and proposed systems.

scholarly journals Sectoral Productivity in the United States: Recent Developments and the Role of it

2007 ◽  
Author(s):  
Carol A. Corrado ◽  
Paul Lengermann ◽  
Eric J. Bartelsman ◽  
Joe Joseph Beaulieu
Keyword(s):  
United States ◽  
The United States ◽  
Sectoral Productivity ◽  
Recent Developments ◽  
Role Of It

Pay Equity in Review

1986 ◽  
Vol 15 (3) ◽  
pp. 211-231 ◽  
Author(s):  
Neil E. Reichenberg
Keyword(s):  
United States ◽  
Reagan Administration ◽  
Equal Employment Opportunity Commission ◽  
The United States ◽  
United States Congress ◽  
Pay Equity ◽  
Department Of Justice ◽  
Before And After ◽  
Recent Developments ◽  
State Legislative

This article provides an overview of pay equity as well as an update of recent developments concerning this issue. The article summarizes the arguments advanced by pay equity advocates and opponents. There is a discussion of the leading court decisions which is organized as cases brought before and after the United States Supreme Court's landmark decision in the case of County of Washington v. Gunther, 452 U.S. 161 (1981). The position of the Reagan Administration, as set forth by the Department of Justice and the Equal Employment Opportunity Commission also is summarized. The article includes a description of the legislation pending before the 99th United States Congress along with state legislative developments. The final section of the article is a pay equity bibliography.

scholarly journals Intellectual property rights in Brazilian floriculture: innovations for the growth and development of the market

2017 ◽  
Vol 23 (3) ◽  
pp. 296 ◽  
Author(s):  
Antonio Helio Junqueira ◽  
Marcia Peetz
Keyword(s):  
Growth And Development ◽  
Ornamental Plants ◽  
Genetic Material ◽  
The United States ◽  
Consumer Market ◽  
International Trends ◽  
Recent Developments ◽  
Cultivated Species ◽  
The Impact ◽  
Sectoral Policy

One of the most important demands imposed by the consumer market on the Brazilian Productive Chain of Flowers and Ornamental Plants is the constant launching of innovations in cultivated species and varieties. Such innovations include the constant introduction of flowers and plants not yet grown and commercialized, both native and adapted exotic species, as well as transformations and changes in size, shape, coloring and conduction patterns and presentation of these goods to the market. Brazil does not have a relevant breeding and cultivation industry. In this sense, it is highly dependent on imports of genetic material developed by countries such as the Netherlands, Germany, Japan, the United States of America, Thailand, among others. Recent developments in the sectoral policy to protect the rights of genetic developers, in the development of internationally adequate legislation and in the control of the use and trade of cultivars, has allowed Brazil greater access to new genetic materials of high quality and in line with contemporary international trends in the consumption. This article aims to discuss the state of the art of protection of cultivars in Brazil, pointing to the advances that the legislation and the inspection have allowed in relation to the introduction of genetic innovations, evaluating the impact of these measures on the growth and development of the market of consumption of flowers and ornamental plants in the country.

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