IN very high performance aircraft—that is aircraft flying at high speeds and high altitudes—the thermal problems confronting the mechanical engineer are becoming progressively…
Abstract
IN very high performance aircraft—that is aircraft flying at high speeds and high altitudes—the thermal problems confronting the mechanical engineer are becoming progressively more and more severe. Atmospheric Temperature ranges of upwards of 100 deg. C combined with thermodynamic effects due to the high speeds, widely varying air pressure and moisture content are encountered and very rigid temperature limits for the various component parts of the aircraft have to be met with equipment of a minimum size and weight and without materially affecting the overall performance of the machine.
The story of how aviation has opened up the African continent promises to be a formidable subject and initial inspection of such chapter headings as “The Nile hydro‐aeroplane” and…
Abstract
The story of how aviation has opened up the African continent promises to be a formidable subject and initial inspection of such chapter headings as “The Nile hydro‐aeroplane” and “The link to West Africa” hardly relieves the impression. But David Jones, an experienced broadcaster, appreciates how easily readers, like listeners, switch off. So he recounts the story almost entirely as achievements by personalities. Those flying that Nile hydro‐aeroplane were Francis McClean and party and the link to West Africa was forged by Coningham and Rowley. Only the last section concentrates on the comparative impersonality of the airlines.
It is extremely likely that present trends towards mass divorce and remarriage will lead to some changes in the fertility behaviour of those affected. As remarriages come to…
Abstract
It is extremely likely that present trends towards mass divorce and remarriage will lead to some changes in the fertility behaviour of those affected. As remarriages come to represent an increasing proportion of all marriages, it is apparent that childbearing and childrearing practices are diversifying and that our conventional assumptions about parenthood and childhood are going to require fairly continuous revision. In the light of this it is useful to consider some of the more obvious connections between remarriage and fertility and to look at the sort of implications which these might have for relationships between parents and children. Does divorce reduce fertility? Does remarriage increase it? How might divorce and remarriage alter the duration and tempo of the childbearing years and what are the likely family arrangements which might ensue? Such questions raise a number of difficulties when looked at within the established categories of fertility research and I therefore hope to suggest some ways in which data of various kinds may be pieced together in order to provide a reasonably comprehensive picture of the problem.
David M. Herold, Greg Joachim, Stephen Frawley and Nico Schulenkorf
The Great Recession has strained governments at all levels and presented cities, especially formerly industrial cities, with nearlyunprecedented budgetary challenges. This paper…
Abstract
The Great Recession has strained governments at all levels and presented cities, especially formerly industrial cities, with nearlyunprecedented budgetary challenges. This paper examines the long-termimplications for infrastructure maintenance and service provision ofunfavorable economic and demographic trends in Philadelphia andBaltimore. The concept of the public equity holder, which borrows a term forpublic finance from corporate finance, introduces a category of potentialcontributors to the capital deficit undermining urban sustainability. Theconcept is illustrated by a case study of the two cities to explore howcandidate public equity holders, including taxpayers, nonprofits, and publicemployees, may contribute. Resulting from this research are identifiablefactors, particularly patience and risk tolerance, which have led to orimpeded partnerships promoting urban sustainability and will provide thefoundation for broader future study
The origins of the SCS can be traced to the civil service established by the English East India Company (EIC) in 1786, when the EIC began its operations in Malaya with the…
Abstract
The origins of the SCS can be traced to the civil service established by the English East India Company (EIC) in 1786, when the EIC began its operations in Malaya with the acquisition of Penang as a settlement from the Sultan of Kedah (Tilman, 1964, p. 40; Jones, 1953, p. 7). The EIC used the term “civil service” to distinguish its civilian employees from those working in the military, maritime, and ecclesiastical organizations. There were three types of civil servants then: those who were covenanted, i.e., occupying senior positions requiring a bond of 500 British pounds as security to ensure the performance of their duties; those who were uncovenanted; and extra-covenanted officers who were granted covenants locally because of their exceptional administrative capabilities (Blunt, 1937, pp. 1–2).
Discusses the 1984 study review by the Department of theEnvironment of existing knowledge regarding landslipping in GreatBritain. Reviews the background to the study and presents…
Abstract
Discusses the 1984 study review by the Department of the Environment of existing knowledge regarding landslipping in Great Britain. Reviews the background to the study and presents some of the general results. Concludes that knowledge of landslide distribution, character and significance remain surprisingly poor, that old (ancient) landslides are much more widely distributed in the landscape than previously thought, and that such old features present an important potential threat to buildings and structures because they can be reactivated if disturbed. Suggests that heightened perception of landslide hazard will lead to greater consideration of ground stability prior to developments, including increased use of various types of survey techniques that exist, and delimit areas of actual and potential instability.
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Outlines the architectural and construction history Corsham Courtover its four hundred years of existence. Describes the damage occurredby neglect during the twentieth century and…
Abstract
Outlines the architectural and construction history Corsham Court over its four hundred years of existence. Describes the damage occurred by neglect during the twentieth century and details the renovations undertaken to make the building structurally sound once more.