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Article
Publication date: 3 August 2015

Abas Abdoli, George S. Dulikravich, Chandrajit L Bajaj, David F Stowe and Salik M Jahania

Currently, human hearts destined for transplantation can be used for 4.5 hours which is often insufficient to test the heart, the purpose of this paper is to find a compatible…

Abstract

Purpose

Currently, human hearts destined for transplantation can be used for 4.5 hours which is often insufficient to test the heart, the purpose of this paper is to find a compatible recipient and transport the heart to larger distances. Cooling systems with simultaneous internal and external liquid cooling were numerically simulated as a method to extend the usable life of human hearts.

Design/methodology/approach

Coolant was pumped inside major veins and through the cardiac chambers and also between the heart and cooling container walls. In Case 1, two inlets and two outlets on the container walls steadily circulated the coolant. In the Case 2, an additional inlet was specified on the container wall thus creating a steady jet impinging one of the thickest parts of the heart. Laminar internal flow and turbulent external flow were used in both cases. Unsteady periodic inlet velocities at two frequencies were applied in Case 3 and Case 4 that had four inlets and four outlets on walls with turbulent flows used for internal and external circulations.

Findings

Computational results show that the proposed cooling systems are able to reduce the heart temperature from +37°C to almost uniform +5°C within 25 min of cooling, thus reducing its metabolic rate of decay by 95 percent. Calculated combined thermal and hydrodynamic stresses were below the allowable threshold. Unsteady flows did not make any noticeable difference in the speed of cooling and uniformity of temperature field.

Originality/value

This is the pioneering numerical study of conjugate convective cooling schemes capable of cooling organs much faster and more uniformly than currently practiced.

Details

International Journal of Numerical Methods for Heat & Fluid Flow, vol. 25 no. 6
Type: Research Article
ISSN: 0961-5539

Keywords

Article
Publication date: 1 June 1985

The librarian and researcher have to be able to uncover specific articles in their areas of interest. This Bibliography is designed to help. Volume IV, like Volume III, contains…

12676

Abstract

The librarian and researcher have to be able to uncover specific articles in their areas of interest. This Bibliography is designed to help. Volume IV, like Volume III, contains features to help the reader to retrieve relevant literature from MCB University Press' considerable output. Each entry within has been indexed according to author(s) and the Fifth Edition of the SCIMP/SCAMP Thesaurus. The latter thus provides a full subject index to facilitate rapid retrieval. Each article or book is assigned its own unique number and this is used in both the subject and author index. This Volume indexes 29 journals indicating the depth, coverage and expansion of MCB's portfolio.

Details

Management Decision, vol. 23 no. 6
Type: Research Article
ISSN: 0025-1747

Keywords

Article
Publication date: 1 January 1990

Mohamed E. Ibrahim, Saad A. Metawae and Ibrahim M. Aly

In recent years, a sizeable amount of research in finance and accounting has been devoted to the issue of bond rating and bond rating changes. A major thrust of these research…

Abstract

In recent years, a sizeable amount of research in finance and accounting has been devoted to the issue of bond rating and bond rating changes. A major thrust of these research efforts was to develop and test some prediction‐based models using mainly financial ratios and their trends. This paper tests the ability of statistical decomposition analysis of financial statements to predict bond rating changes. The results show that the decomposition analysis almost does not beat the a priori probability model and is no better than multiple discriminant analysis using simple financial ratios. One important piece of information for participants in debt markets is the assessment of the relative risk associated with a particular bond issue, commonly known as bond ratings. These ratings, however, are not usually fixed for the life of the issues. From time to time, the rating agencies review their ratings of the outstanding bond issues and make changes to these ratings (either upward or downward) when needed. Over the years, researchers have attempted to develop and test some prediction based models in order to predict bond ratings or bond rating changes. These prediction models have employed some variables that are assumed to reflect the rating agency decision‐making activities. Although the rating process is complicated and based mainly on judgmental considerations, Hawkins, Brown and Campbell (1983, p. 95) reported that the academic research strongly suggests that a reliable estimate of a potential bond rating or rating change can be determined by a few key financial ratios. Information theory decomposition measures have received in recent years considerable attention as a potential tool for predicting corporate events, namely corporate bankruptcy (e.g., Lev 1970; Moyer 1977; Walker, Stowe and Moriarity 1979; Booth 1983). The underlying proposition in these studies is that corporate failure, as an event, is expected to be preceded by significant changes in the company's assets and liabilities structure. Although the event of bond rating changes is different from the bankruptcy event in terms of consequences, one can still propose that a bond rating change, as a corporate event, is also expected to be preceded by some significant changes in the company's assets and liabilities structure. Therefore, the decomposition analysis may have a predictive ability in the case of bond rating changes. The purpose of this paper is to empirically test and compare the classification and predictive accuracy of the decomposition analysis with the performance of a multiple discriminant model that uses financial ratios and their trends in the context of bond rating changes.

Details

Managerial Finance, vol. 16 no. 1
Type: Research Article
ISSN: 0307-4358

Article
Publication date: 1 October 1936

Sir Kingsley Wood, the Minister of Health, speaking at Plymouth on September 15th, said the problem of nutrition was one to which increased attention must be given in the light of…

Abstract

Sir Kingsley Wood, the Minister of Health, speaking at Plymouth on September 15th, said the problem of nutrition was one to which increased attention must be given in the light of modern scientific knowledge. In all our consideration of it we should not forget the necessity of pure, wholesome food. The consumption of food of all kinds in the United Kingdom had grown considerably. To‐day it was probably over 25 million tons a year. The consumption of dairy products and of eggs, fruit and vegetables, so important to good nutrition, had greatly increased. It was vital to our good health that our food supply should not only be unimpaired by the addition of harmful substances, but that there should be no abstraction from articles of food of their proper qualities. It was only fair that the public should get what they asked and paid for. There had undoubtedly been a considerable improvement in the food standards in this country. It had been achieved largely by the Health Authorities and their professional advisers, as well as producers and manufacturers themselves. Some 60 years ago some 15,000 samples only were submitted to Public Analysts, and over 19 per cent. were found to be adulterated or not up to standard. Last year over 143,000 samples were submitted—the highest on record—and the percentage adulterated or not up to standard was a little over 5 per cent. For a variety of reasons the true percentage of adulterated food was probably less than was indicated in this figure. It could be fairly said that nowadays there was very little gross adulteration or deliberate substitution of one article of food for another. But we still had to be vigilant to see to it that the public had some sort of guarantee that they were getting what they asked for, and that food did not contain ingredients which would render it injurious to health. The consumer's interest must always come first both from the point of view of fair trading and good health. There was also no doubt about the high nutritional value of milk, and we must do all we can to increase the consumption of clean and safe milk.

Details

British Food Journal, vol. 38 no. 10
Type: Research Article
ISSN: 0007-070X

Book part
Publication date: 11 June 2014

This chapter is about the modern (Western) educational regime, educational industry paradigm and schooling process, while focussing on statutorily imposed and legally enforced…

Abstract

This chapter is about the modern (Western) educational regime, educational industry paradigm and schooling process, while focussing on statutorily imposed and legally enforced schooling as the main aspect of the hidden curriculum within a globalizing world.

It is about children's productive labour through schooling, whereby children's labour power is consumed, produced and reproduced on behalf of social formations under the capitalist mode of production (CMP).

The claim that a well-educated population is essential for development so that all societies share an interest in having children participate in schooling as much as possible is the central element of the Western education industry paradigm, the global appeal of which is reflected in how compulsory schooling has been embraced almost everywhere in conjunction with being heavily promoted within the ‘international community’ and widely endorsed by researchers, scholars and similar observers.

Contrary to Bowles and Gintis's correspondence principle, the structure of schooling is not an identical to the structure of the workplace in that it entails compulsion, whereby schooling is as efficient and effective as possible in meeting the needs of the CMP.

The CMP benefits from the state having shifted confinement as a mechanism to force people to work onto schooling; or, from compulsory social enclosure, whereby schools increasingly resemble military and prison systems.

Compulsory social enclosure helps to ensure that children's productive capacity – or labour power – is enhanced to the benefit of the CMP, this being the major factor in accounting for its appeal and advance on the world stage, globally.

Article
Publication date: 1 July 1970

DONCASTER'S new Central Library was formally opened on 29th December 1969 on precisely the 100th anniversary of the opening of the first public library in Doncaster. Conforming to…

Abstract

DONCASTER'S new Central Library was formally opened on 29th December 1969 on precisely the 100th anniversary of the opening of the first public library in Doncaster. Conforming to tradition, the Library was opened by the Mayor of Doncaster, Councillor Marcus Outwin. The President of the Library Association, Mr. Wilfred Ashworth, addressed the assembled guests, his last official appointment before relinquishing the office.

Details

New Library World, vol. 72 no. 1
Type: Research Article
ISSN: 0307-4803

Book part
Publication date: 6 August 2018

Gül Seçkin, Susan Hughes, Cassie Hudson, David Laljer and Dale Yeatts

Purpose: The aim of the study is to consider the use of the Internet as a potential facilitator of positive health-related perceptions. Specifically, we propose that online health

Abstract

Purpose: The aim of the study is to consider the use of the Internet as a potential facilitator of positive health-related perceptions. Specifically, we propose that online health information seeking fosters positive perceptions of health. Using path modeling, we theorized several mechanisms through which information seeking could be conducive to positive health perceptions, which we conceptualized into the following four dimensions: (1) sense of empowerment in managing health, (2) self-reported ability to take better care of health, (3) sense of improved health-related quality of life, and (4) self-reported improvement of health.

Methodology: Our sample consisted of respondents who have used the Internet as a resource for health information (n = 710), drawn from the largest national probability-based online research panel. Our comparison subsample consisted of older respondents (age ≥ 60; n = 194). We used Internet-specific measures and employed structural equation models (SEM) to estimate the direct, indirect, and total effects of health-related use of the Internet on subjective health perceptions. Based on our review of the literature, competent health communication with healthcare providers and sense of empowerment in managing personal health were modeled as mediator variables. We assessed whether the proposed mediational relationships, if significant, differed across our indicators of positive health perceptions and whether any differential associations were observed among older adults. We run parallel models for each indicator of positive health perception.

Findings: Provider-patient communication informed by the Internet resources were perceived to impart a greater sense of empowerment to manage health among our respondents, which in turn, was associated with perceived contributions to better self-reported ability to provide self-care, increased health-related quality of life, and improvement in self-reported health. The SEM results revealed a good fit with our full sample and subsample.

Research Implications: Conceptualization of the multidimensional aspects of online health information seeking with separate multi-indicator analyses of the outcome variable is important to further our understanding of how technology may impact the pathways involved in influencing health perceptions and as a result health outcomes.

Details

eHealth: Current Evidence, Promises, Perils and Future Directions
Type: Book
ISBN: 978-1-78754-322-5

Keywords

Article
Publication date: 1 December 1907

THE enterprise of two London newspapers, the Tribune (for the second time) and the Daily Chronicle, in organizing exhibitions of books affords a convenient excuse for once again…

Abstract

THE enterprise of two London newspapers, the Tribune (for the second time) and the Daily Chronicle, in organizing exhibitions of books affords a convenient excuse for once again bringing forward proposals for a more permanent exhibition. On many occasions during the past twenty years the writer has made suggestions for the establishment of a central book bazaar, to which every kind of book‐buyer could resort in order to see and handle the latest literature on every subject. An experiment on wrong lines was made by the Library Bureau about fifteen years ago, but here, as in the exhibitions above mentioned, the arrangement was radically bad. Visiting the Daily Chronicle show in company with other librarians, and taking careful note of the planning, one was struck by the inutility of having the books arranged by publishers and not by subjects. Not one visitor in a hundred cares twopence whether books on electricity, biography, history, travel, or even fairy tales, are issued by Longmans, Heinemann, Macmillan, Dent or any other firm. What everyone wants to see is all the recent and latest books on definite subjects collected together in one place. The arrangements at the Chronicle and Tribune shows are just a jumble of old and new books placed in show‐cases by publishers' names, similar to the abortive exhibition held years ago in Bloomsbury Street. What the book‐buyer wants is not a miscellaneous assemblage of books of all periods, from 1877 to date, arranged in an artistic show‐case and placed in charge of a polite youth who only knows his own books—and not too much about them—but a properly classified and arranged collection of the newest books only, which could be expounded by a few experts versed in literature and bibliography. What is the use of salesmen in an exhibition where books are not sold outright? If these exhibitions were strictly limited to the newest books only, there would be much less need for salesmen to be retained as amateur detectives. Another decided blemish on such an exhibition is the absence of a general catalogue. Imagine any exhibition on business lines in which visitors are expected to cart away a load of catalogues issued separately by the various exhibitors and all on entirely different plans of arrangement! The British publisher in nearly everything he does is one of the most hopeless Conservatives in existence. He will not try anything which has not been done by his grandfather or someone even more remote, so that publishing methods remain crystallized almost on eighteenth century lines. The proposal about to be made is perhaps far too revolutionary for the careful consideration of present‐day publishers, but it is made in the sincere hope that it may one day be realized. It has been made before without any definite details, but its general lines have been discussed among librarians for years past.

Details

New Library World, vol. 10 no. 6
Type: Research Article
ISSN: 0307-4803

Article
Publication date: 1 April 1984

Karen L. Blank

Technology is an integral part of library functions in Australia. The development of a national bibliographic network, of local and regional cooperation, integrated library…

Abstract

Technology is an integral part of library functions in Australia. The development of a national bibliographic network, of local and regional cooperation, integrated library systems, telecommunications, and online systems, as well as usage of microcomputers, ergonomics, copyright issues, and national information policy are all discussed. Additionally, the ambitious information technology plans of the Parliamentary Library of Australia are described.

Details

Library Hi Tech, vol. 2 no. 3
Type: Research Article
ISSN: 0737-8831

Article
Publication date: 1 March 1972

Food—national dietary standards—is a sensitive index of socio‐economic conditions generally; there are others, reflecting different aspects, but none more sensitive. A country…

Abstract

Food—national dietary standards—is a sensitive index of socio‐economic conditions generally; there are others, reflecting different aspects, but none more sensitive. A country that eats well has healthy, robust people; the housewife who cooks hearty, nourishing meals has a lusty, virile family. It is not surprising, therefore, that all governments of the world have a food policy, ranking high in its priorities and are usually prepared to sacrifice other national policies to preserve it. Before the last war, when food was much less of an instrument of government policy than now—there were not the shortages or the price vagaries—in France, any government, whatever its colour, which could not keep down the price of food so that the poor man ate his fill, never survived long; it was—to make use of the call sign of those untidy, shambling columns from our streets which seem to monopolize the television news screens—“out!” Lovers of the Old France would say that the country had been without stable government since 1870, but the explanation for the many changes in power in France in those pre‐war days could be expressed in one word—food!

Details

British Food Journal, vol. 74 no. 3
Type: Research Article
ISSN: 0007-070X

1 – 10 of 41