IN order to determine the performance of a ducted fan over a range of off‐design operating conditions it is possible to use the nomogram method of analysis described by J. F. M…
Abstract
IN order to determine the performance of a ducted fan over a range of off‐design operating conditions it is possible to use the nomogram method of analysis described by J. F. M. Scholes. The method requires the use of a number of charts, each one being applicable only to a single radius ratio. Moreover each chart depends on the aerofoil characteristics of the blade element, so that it applies only to a single section shape operating at a given Reynolds Number. No account is taken of interference effects or compressibility. Despite these limitations the nomogram method may be valuable if it is required to analyse a number of fans employing the same blade section over a similar range of Reynolds Numbers.
OVER A QUARTER of a century ago, in September 1938, we published a review of diffuser behaviour by G. N. Patterson which, together with one of its main information sources by…
Abstract
OVER A QUARTER of a century ago, in September 1938, we published a review of diffuser behaviour by G. N. Patterson which, together with one of its main information sources by Gibson, has formed the accepted guide to diffuser design. Patterson's paper was broad in scope and made clear reference to the effect of parameters which were not fully investigated until much later. It is the purpose of this paper to review experimental work, much of it being along the lines formulated by Patterson, and to indicate the improved analytical understanding of diffusers.
TURBINE disks are subject to stresses due to two causes; the inertia effects of rotation, and the radial variation of temperature across the disk. Elastic stresses due to each of…
Abstract
TURBINE disks are subject to stresses due to two causes; the inertia effects of rotation, and the radial variation of temperature across the disk. Elastic stresses due to each of these effects may be determined separately and superposed to obtain the resultant stress distribution.
A QUARTER of a century ago, in September 1938, this journal published a review of diffuser behaviour by G. N. Patterson1 which, together with one of. its main information sources…
Abstract
A QUARTER of a century ago, in September 1938, this journal published a review of diffuser behaviour by G. N. Patterson1 which, together with one of. its main information sources by Gibson,2 has formed the accepted guide to diffuser design. Patterson's paper was broad in scope and made clear reference to the effect of parameters which were not fully investigated until much later. It is the purpose of this paper to review experimental work, much of it being along the lines formulated by Patterson, and to indicate the improved analytical understanding of diffusers.
Emily J. Solari, Nancy S. McIntyre, Jaclyn M. Dynia and Alyssa Henry
Academic outcomes for individuals with autism spectrum disorder (ASD) remain poor, especially in the area of reading, in particular, reading comprehension. In recent years…
Abstract
Academic outcomes for individuals with autism spectrum disorder (ASD) remain poor, especially in the area of reading, in particular, reading comprehension. In recent years, researchers have begun to investigate subcomponent skills of reading comprehension for children with ASD in order to better understand its development and potential interventions to enhance outcomes. This chapter highlights the current knowledge in the field in regards to the key cognitive and language skills associated with reading development for individuals with ASD. These include emergent-literacy skills, word-reading and decoding, reading fluency, oral language, and social cognition. Additionally, the chapter makes suggestions for future research in this area, in particular the need to conduct research to establish evidence-based practices to better support the syndrome-specific reading needs for this population.
THE PRESIDENT of the Library Association for 1929–30 will be Lord Balneil, the son of the Earl of Crawford, and it is difficult to think of a better choice. Lord Balneil has an…
Abstract
THE PRESIDENT of the Library Association for 1929–30 will be Lord Balneil, the son of the Earl of Crawford, and it is difficult to think of a better choice. Lord Balneil has an admirable bibliographical ancestry—if we may so put it—seeing that his grandfather, the 26th Earl of Crawford, was President in 1898; and the Haigh Hall Library at the family seat is one of the noble private libraries of England. Lord Balneil is the Chairman of the Appeal Committee for the endowment of the School of Librarianship and so has already identified himself in a practical manner with the cause of libraries.
Jason C. Travers, Matt Tincani, Julie L. Thompson and Richard L. Simpson
Learners with autism require specialized education and supports to ensure acquisition and mastery of various communication skills. This is particularly true for individuals whose…
Abstract
Learners with autism require specialized education and supports to ensure acquisition and mastery of various communication skills. This is particularly true for individuals whose disability significantly impacts their language development. Without functional communication, these individuals often engage in severe behavior, have reduced self-determination, and experience diminished quality of life. Accordingly, researchers in special education and related fields have sought ways to improve the communication skills of learners with autism who need specialized language and communication interventions. Although the Picture Exchange Communication System (PECS) is well-established in the empirical literature and has helped countless individuals learn to communicate, the method known as facilitated communication (FC; which also is being called “supported typing” and “rapid prompting method”) has become increasingly popular in recent years. Few methods in special education have been as thoroughly discredited as FC and perhaps none are as dangerous. This chapter contrasts the thoroughly debunked FC and its pseudoscientific characteristics with those underpinning PECS. A brief historical account of each method is provided along with key scientific and pseudoscientific features that distinguish science from pseudoscience. Ultimately, our intent is to further clarify how FC is not an augmentative or alternative communication method and why PECS is.
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OWING to the comparatively early date in the year of the Library Association Conference, this number of THE LIBRARY WORLD is published so that it may be in the hands of our…
Abstract
OWING to the comparatively early date in the year of the Library Association Conference, this number of THE LIBRARY WORLD is published so that it may be in the hands of our readers before it begins. The official programme is not in the hands of members at the time we write, but the circumstances are such this year that delay has been inevitable. We have dwelt already on the good fortune we enjoy in going to the beautiful West‐Country Spa. At this time of year it is at its best, and, if the weather is more genial than this weather‐chequered year gives us reason to expect, the Conference should be memorable on that account alone. The Conference has always been the focus of library friendships, and this idea, now that the Association is so large, should be developed. To be a member is to be one of a freemasonry of librarians, pledged to help and forward the work of one another. It is not in the conference rooms alone, where we listen, not always completely awake, to papers not always eloquent or cleverly read, that we gain most, although no one would discount these; it is in the hotels and boarding houses and restaurants, over dinner tables and in the easy chairs of the lounges, that we draw out really useful business information. In short, shop is the subject‐matter of conference conversation, and only misanthropic curmudgeons think otherwise.
Raja Intan Arifah Binti Raja Reza Shah and Eugene Y. J. Tee
This study examines the relationship between in-group identification, intergroup schadenfreude, and the tendency to aggress against out-group members. More specifically, it…
Abstract
Purpose
This study examines the relationship between in-group identification, intergroup schadenfreude, and the tendency to aggress against out-group members. More specifically, it assesses whether intergroup schadenfreude mediates the identification–aggression link.
Design/Methodology/Approach
This study is a cross-sectional study with the variables studied being in-group identification, intergroup schadenfreude, and tendency to aggress toward out-group members. A total of 123 participants were recruited for this study and questionnaires measuring each variable was administered to participants.
Findings
The results from a cross-sectional survey indicate a positive correlation between in-group identification and intergroup schadenfreude and between intergroup schadenfreude and tendency to aggress against out-group members. The results from this study also show that intergroup schadenfreude mediates the relationship between in-group identification and the tendency to aggress against out-group members.
Research Limitations/Implications
Given the nature of cross-sectional study, claims regarding causal nature of the variables studied could not be made. Further, this study was also contextualized within the political context making expression of schadenfreude more “acceptable” and more easily expressed among participants. Suggestions for further research suggestions are discussed is light of these limitations.
Practical Implications
Findings of this study highlight the importance of understanding intergroup schadenfreude in group contexts, and how such emotions can be employed by leaders to instigate, rather than diminish aggressive tendencies against out-group members.
Originality/Value
This is one of the few studies to demonstrate that rather than diminishing tendencies to engage in aggressive behaviors, schadenfreude, when experienced within group settings, can instead elicit intentions to aggress against rival or opposing group members.
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The statements which have recently been made in various quarters to the effect that Danish butter is losing its hold on the English market, that its quality is deteriorating, and…
Abstract
The statements which have recently been made in various quarters to the effect that Danish butter is losing its hold on the English market, that its quality is deteriorating, and that the sale is falling off, are not a little astonishing in face of the very strong and direct evidence to the contrary furnished by the official records. As an example of the kind of assertions here alluded to may be instanced an opinion expressed by a correspondent of the British Food Journal, who, in a letter printed in the March number, stated that “My own opinion is that the Danes are steadily losing their good name for quality, owing to not using preservatives and to their new fad of pasteurising… .”