Aarhus Kommunes Biblioteker (Teknisk Bibliotek), Ingerslevs Plads 7, Aarhus, Denmark. Representative: V. NEDERGAARD PEDERSEN (Librarian).
‘To me there appear to be only three principles of connexion among ideas, namely, resemblance, contiguity in time or place, and cause or effect.’
WE publish in this issue the third and final instalment of an exhaustive survey of the spring tab—a device to make somewhat easier the onerous task of the pilot in controlling his…
Abstract
WE publish in this issue the third and final instalment of an exhaustive survey of the spring tab—a device to make somewhat easier the onerous task of the pilot in controlling his mount at the high speeds of modern flight. We feel that it is only fair to MR F. B. BAKER, the author, that we should make it clear that his article was written over two years ago and was, in fact, submitted to us so long ago as November 1945. The long—and, we readily admit, from his point of view unconscionable—delay has been due to the difficulties of setting the somewhat complicated mathematics involved, combined with the problem of finding space in three successive issues for a paper of this length. The mathematical incubus has been so much the burthen of our monthly song in recent issues that we will refrain from enlarging on it again here, except to emphasize that this is an example of the effect it can have in holding up the appearance of a contribution.
THE choice of nv and — lv for a new aircraft is not simply a matter of chance; nor can it be decided entirely by considerations of stability. Below are given certain working…
Abstract
THE choice of nv and — lv for a new aircraft is not simply a matter of chance; nor can it be decided entirely by considerations of stability. Below are given certain working rules, which should act as a useful guide.
THE normal control surfaces of an aeroplane are the elevator (for pitching); the rudder (for yawing); and the ailerons (for rolling). In certain cases the ailerons may be replaced…
Abstract
THE normal control surfaces of an aeroplane are the elevator (for pitching); the rudder (for yawing); and the ailerons (for rolling). In certain cases the ailerons may be replaced or augmented by spoilers, conveniently placed just in front of the ailerons, or at the same chordal position further inboard.
Joseph Deutsch, Jacques Silber and Guanghua Wan
This chapter examines the impoverishment process in three South Caucasian states: Armenia, Azerbaijan and Georgia. It uses the concept of ‘order of curtailment’ of consumption…
Abstract
This chapter examines the impoverishment process in three South Caucasian states: Armenia, Azerbaijan and Georgia. It uses the concept of ‘order of curtailment’ of consumption expenditures to detect the order of curtailment of expenditures in the Caucasus region. It then suggests computing poverty rates on the basis of a threshold corresponding to the curtailment of a certain number of consumption expenditures categories and compares the poverty rates obtained with those derived from more traditional approaches to the unidimensional measurement of poverty. The empirical illustrations are based on the Caucasus Barometer surveys of 2009 and 2013.
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Since the second world war, considerable research funds and effort have been spent on developing means for controlling the ever‐increasing flood of recorded knowledge. As far as…
Abstract
Since the second world war, considerable research funds and effort have been spent on developing means for controlling the ever‐increasing flood of recorded knowledge. As far as librarians and information officers are concerned, the problem can be divided up into five distinct stages, as shown in Figure 1.
Robert Crosnoe, Aprile D. Benner and Pamela Davis-Kean
Applying sociological and developmental theoretical perspectives to educational policy issues, this study analyzed data from 7,710 children from low-income families in the Early…
Abstract
Applying sociological and developmental theoretical perspectives to educational policy issues, this study analyzed data from 7,710 children from low-income families in the Early Childhood Longitudinal Study-Kindergarten Cohort. The goal was to examine how much the association between phonics instruction in kindergarten classrooms and children’s reading achievement during the first year of school in the low-income population would depend on whether children had previously attended preschool as well as the socioeconomic composition of their elementary schools. Lagged linear models with a series of sensitivity tests revealed that this association was strongest among children from low-income families who had not attended preschool and then enrolled in socioeconomically disadvantaged elementary schools and among children from low-income families who had attended preschool and then enrolled in socioeconomically advantaged elementary schools. These findings demonstrate how insights into educational inequality can be gained by situating developing children within their proximate ecologies and institutional settings, especially looking to the match between children and their contexts. They are especially relevant to timely policy discussions of early childhood education programs, classroom instructional practices, and school desegregation.