Search results

1 – 10 of 430
Per page
102050
Citations:
Loading...
Access Restricted. View access options
Article
Publication date: 2 September 2021

Aitor Tejo-Otero, Arthur Colly, Edwin-Joffrey Courtial, Felip Fenollosa-Artés, Irene Buj-Corral and Christophe A. Marquette

The purpose of this study is to use the Freeform Reversible Embedding of Suspended Hydrogels (FRESH) additive manufacturing (AM) technique for manufacturing a liver phantom which…

304

Abstract

Purpose

The purpose of this study is to use the Freeform Reversible Embedding of Suspended Hydrogels (FRESH) additive manufacturing (AM) technique for manufacturing a liver phantom which can mimic the corresponding soft living tissue. One of the possible applications is surgical planning.

Design/methodology/approach

A thermo-reversible Pluronic® F-127-based support bath is used for the FRESH technique. To verify how three-dimensional (3D)-printed new materials can mimic liver tissue, dynamic mechanical analysis and oscillation shear rheometry tests are carried out to identify mechanical characteristics of different 3D printed silicone samples. Additionally, the differential scanning calorimetry was done on the silicone samples. Then, a validation of a 3D printed silicone liver phantom is performed with a 3D scanner. Finally, the surface topography of the 3D printed liver phantom was fulfiled and microscopy analysis of its surface.

Findings

Silicone samples were able to mimic the liver, therefore obtaining the first soft phantom of the liver using the FRESH technique.

Practical implications

Because of the use of soft silicones, surgeons could practice over these improved phantoms which have an unprecedented degree of living tissue mimicking, enhancing their rehearsal experience before surgery.

Social implications

An improvement in surgeons surgery skills would lead to a bettering in the patient outcome.

Originality/value

The first research study was carried out to mimic soft tissue and apply it to the 3D printing of organ phantoms using AM FRESH technique.

Details

Rapid Prototyping Journal, vol. 28 no. 2
Type: Research Article
ISSN: 1355-2546

Keywords

Access Restricted. View access options
Article
Publication date: 1 March 1920

Sir Watson Cheyne, M.P., recently introduced a deputation to Mr. Balfour to urge upon the Government a proposal for the granting of awards or pensions to persons making medical or…

19

Abstract

Sir Watson Cheyne, M.P., recently introduced a deputation to Mr. Balfour to urge upon the Government a proposal for the granting of awards or pensions to persons making medical or other scientific discoveries of general benefit to humanity. The method suggested is the annual voting of £20,000, to be distributed in pensions, some of £1,000 a year, others of £500. In commenting upon the matter the Daily Telegraph observes that the public is more concerned with the adoption of the principle than of any cut‐and‐dried scheme, but it may be pointed out how essentially moderate this proposal is, considering the priceless value of the services which it is desired to reward, and how our credit as a nation stands in this respect. It has been pointed out by foreign writers at least as often as by our own that Great Britain stands above all other countries in respect of the number of original and world‐important ideas and discoveries contributed to science, and that reputation is well maintained to this hour. But what material form does the nation's gratitude, and its pride in the possession of such citizens, take? The answer is that they are not rewarded to the extent of one penny of public money, and we believe that ours is the one leading country in the world of which this can be said. Let us note the case of Sir Ronald Ross, for example, whose work in connection with the cause and prevention of malaria is a landmark in the progress of medical science, and has already been the means of saving tens of thousands of lives. If we considered only the direct benefit done to his own countrymen, and left out of account the honour that he has reflected upon the British name, Sir Ronald's work might still be regarded as equally worthy of recognition with that of a distinguished soldier let us say. But it has brought him nothing, so far as his own country is concerned, in recompense for the years of devoted and often dangerous labour which his discovery represents. Sir Ronald Ross has himself remarked that a doctor who gave to the world the long‐sought cure for cancer would get nothing for his pains from his own people; yet of those people alone, we have seen it stated on high medical authority, 35,000 die of cancer every year upon the average. For any material reward, such a British discoverer would have to look outside his own country. He might receive a small prize from the French Academy; he might receive—as Sir Ronald Ross, we are proud to remember, has received—a large prize from the Nobel trustees, in Sweden. That is not a very gratifying reflection; and even if it were consistent with our self‐respect that such services should be rewarded at other than British expense, the fact would remain that not one in fifty of our pioneers of science could receive such recognition. The matter is thrown into an especially strong light just now, when large sums of public money are being awarded—and most justly and properly awarded—to officers and others who have assisted Britain's military effort by inventions found serviceable by the Army and Navy. A great innovation in healing science will preserve to the world incalculably more lives than the most deadly device of war could destroy; but only the latter service is thought worthy of recompense. Yet consider the circumstances in which by far the greater part of British research, leading to ultimate discovery, is carried on. Much of the most valuable work in medicine, for example, has been done by men who, at the expense of health and strength, were carrying on medical practice at the same time, and not always making ends meet without difficulty. Even the researcher who draws a salary from public or private funds has no more than a pittance in most cases. Some of the greatest names in the history of British science are associated with melancholy stories of poverty and struggle, continued over many years. For such triumphs are not achieved without the devotion of a great part of a man's life. Koch's discovery of the tubercule bacillus was the fruit of eleven years of patient seeking. The wonderful drug salvarsan was only given to the world after years of monotonous labour. Any scale of reward which Parliament could reasonably be expected to sanction would have been earned a dozen times over by sheer hard work and perseverance alone in every case which was held to deserve such recognition. Mr. Balfour, we can be quite sure, would be personally well‐disposed towards the appeal that has been made. As Lord President of the Council, he has the national organisation of research which Great Britain at last possesses—such as it is—under his Ministerial care. The Medical Research Committee expends an annual sum of £60,000 of public money, which represents, we should say, infinitely the cheapest national investment on record. The sum which it is now proposed to lay out stands upon a similar footing. A great stimulus would unquestionably be given to research of every kind, if a reasonable prospect of such recognition were opened to the scientific worker; and a man possessing the definite talent for such service would, once adequately pensioned, be able to carry on without distraction the task of extending still further the boundaries of knowledge. That science should continue to be starved because men can be found to undertake unrewarded labour for their fellow‐creatures is not only a reproach to us as a nation, but bad from the point of view of tangible results; and we trust that the case submitted by Sir Watson Cheyne and his colleagues will be admitted and acted upon without delay.

Details

British Food Journal, vol. 22 no. 3
Type: Research Article
ISSN: 0007-070X

Access Restricted. View access options
Article
Publication date: 1 December 2004

Rachel Crane

Film provides an alternative medium for assessing our interpretations of cultural icons. This selective list looks at the film and video sources for information on and…

1181

Abstract

Film provides an alternative medium for assessing our interpretations of cultural icons. This selective list looks at the film and video sources for information on and interpretations of the life of Woody Guthrie.

Details

Collection Building, vol. 23 no. 4
Type: Research Article
ISSN: 0160-4953

Keywords

Access Restricted. View access options
Article
Publication date: 4 April 2024

Aldo Salinas and Cristian Ortiz

The purpose of this study is to examine the relationship between the productive structure and the size of the informal economy in Latin American countries.

88

Abstract

Purpose

The purpose of this study is to examine the relationship between the productive structure and the size of the informal economy in Latin American countries.

Design/methodology/approach

The study employs econometric techniques for panel data covering the period from 2002 to 2017 and considering 17 Latin American countries. The evidence presented is based on the informal economy data generated by Medina and Schneider (2018) who estimate the size of the informal economy using a structural equation model and the share of manufacturing in total employment as a measure of the size of the manufacturing sector. Also, the study addresses the possible endogeneity bias in the relationship studied and makes the conclusions more robust, thus avoiding spurious correlations that weaken the findings.

Findings

The results indicate that most industrialized Latin American countries are associated with a smaller size of the informal economy.

Practical implications

The findings have important policy implications, as they suggest that Latin American economies need to switch the structure of the economy toward more sophisticated productive structures if they want to reduce the size of the informal economy. Thus, more efforts should be deployed to policies to diversify and upgrade economies.

Originality/value

The study contributes to the literature on the informal economy by connecting the country’s productive structure and informality. Specifically, the results show that the productive structure of countries is a plausible explanation for the size of the informal economy.

Details

Journal of Entrepreneurship and Public Policy, vol. 13 no. 2
Type: Research Article
ISSN: 2045-2101

Keywords

Access Restricted. View access options
Book part
Publication date: 24 July 2023

John Grady

Using visual materials to understand a social object requires the researcher to know that object's purpose, and this is true whether the object is an artifact, a restricted event…

Abstract

Using visual materials to understand a social object requires the researcher to know that object's purpose, and this is true whether the object is an artifact, a restricted event, a small social world, or something as massive as the modern city. I argue that the purpose of the city as a settlement is driven by the need to safely sleep in peace at night while satisfying other basic biophysical needs during the day as conveniently as possible. An examination of these needs identifies 10 functional prerequisites for human settlement, entangling its inhabitants in involuntary community with entities and events other than themselves, whether they like it or not. In addition, the rise of the modern city exacerbates the challenge of living in a reluctant community and pressures its inhabitants to come to terms with the consequences for how these relationships affect daily life. I highlight nine challenges posed as questions that have been particularly salient in American urban history since the mid-nineteenth century. How these challenges have been addressed indicates not only what it takes to make a modern city a settlement suitable for satisfying human needs, but also just how deeply invested its residents are in making the city work. Finally, the 10 functional prerequisites and nine moral challenges not only provide a framework for researching the city, but also suggest a coherent outline for imagining a “shooting script” or guide for conducting visual research.

Details

Visual and Multimodal Urban Sociology, Part A
Type: Book
ISBN: 978-1-83909-968-7

Keywords

Access Restricted. View access options
Book part
Publication date: 19 September 2014

Christian Landau

We investigate whether active involvement of private equity firms in their portfolio companies during the holding period of a later-stage private equity investment is related to…

Abstract

We investigate whether active involvement of private equity firms in their portfolio companies during the holding period of a later-stage private equity investment is related to increased levels in operating performance of these companies. Our analysis of unique survey data on 267 European buyouts and secondary performance data on 29 portfolio companies using partial least squares structural equation modeling indicates that private equity firms, that is, their board representatives, can increase operating performance not only by monitoring the behavior of top managers of portfolio companies, but also by becoming involved in strategic decisions and supporting top managers through the provision of strategic resources. Strategic resources, in particular expertise and networks, provided by private equity firm representatives in the form of financial and strategic involvement are associated with increases in the financial performance and competitive prospects of portfolio companies. Operational involvement, however, is not related to changes in operating performance. In addition to empirical insights into the different types of involvement and their effects, this chapter contributes to the buyout literature by providing support for the suggested broadening of the theoretical discussion beyond the dominant perspective of agency theory through developing and testing a complementary resource-based view of involvement. This allows taking into account not only the monitoring, but also the more entrepreneurial supporting element of involvement by private equity firms.

Access Restricted. View access options
Book part
Publication date: 28 March 2015

Thomas D. Beamish and Nicole Woolsey Biggart

Following Philip Selznick’s lead in using pragmatist social science to understand issues of public concern we conducted a study of failed innovation in the commercial construction…

Abstract

Following Philip Selznick’s lead in using pragmatist social science to understand issues of public concern we conducted a study of failed innovation in the commercial construction industry (CCI). We find that social heuristics – collectively constructed and maintained interpretive decision-making frames – significantly shape economic and non-economic decision-making practices. Social heuristics are the outcome of industry-based “institutionalization processes” and are widely held and commonly relied on in CCI to reduce uncertainty endemic to decision-making; they provide actors with both a priori and ex post facto justifications for economic decisions that appear socially rational to industry co-participants. In the CCI – a project-centered production network – social heuristics as shared institutions sustain network-based social order but in so doing discourage novel technologies and impede innovation. Social heuristics are actor-level constructs that reflect macro-level institutional arrangements and networked production relations. The concept of social heuristics offers the promise of developing a genuinely social theory of individual economic choice and action that is historically informed, contextually situated, and neither psychologically nor structurally reductionist.

Details

Institutions and Ideals: Philip Selznick’s Legacy for Organizational Studies
Type: Book
ISBN: 978-1-78441-726-0

Keywords

Access Restricted. View access options
Book part
Publication date: 1 July 2014

Alexandra E. MacDougall, John E. Baur, Milorad M. Novicevic and M. Ronald Buckley

On many occasions, organizational science research has been referred to as fragmented and disjointed, resulting in a literature that is, in the opinion of many, difficult to…

Abstract

On many occasions, organizational science research has been referred to as fragmented and disjointed, resulting in a literature that is, in the opinion of many, difficult to navigate and comprehend. One potential explanation is that scholars have failed to comprehend that organizations are complex and intricate systems. In order to move us past this morass, we recommend that researchers extend beyond traditional rational, mechanistic, and variable-centered approaches to research and integrate a more advantageous pattern-oriented approach within their research program. Pattern-oriented methods approximate real-life phenomena by adopting a holistic, integrative approach to research wherein individual- and organizational-systems are viewed as non-decomposable organized wholes. We argue that the pattern-oriented approach has the potential to overcome a number of breakdowns faced by alternate approaches, while offering a novel and more representative lens from which to view organizational- and HRM-related issues. The proposed incorporation of the pattern-oriented approach is framed within a review and evaluation of current approaches to organizational research and is supplemented with a discussion of methodological and theoretical implications as well as potential applications of the pattern-oriented approach.

Details

Research in Personnel and Human Resources Management
Type: Book
ISBN: 978-1-78350-824-2

Keywords

Access Restricted. View access options
Article
Publication date: 1 February 1974

Frances Neel Cheney

Communications regarding this column should be addressed to Mrs. Cheney, Peabody Library School, Nashville, Term. 37203. Mrs. Cheney does not sell the books listed here. They are…

411

Abstract

Communications regarding this column should be addressed to Mrs. Cheney, Peabody Library School, Nashville, Term. 37203. Mrs. Cheney does not sell the books listed here. They are available through normal trade sources. Mrs. Cheney, being a member of the editorial board of Pierian Press, will not review Pierian Press reference books in this column. Descriptions of Pierian Press reference books will be included elsewhere in this publication.

Details

Reference Services Review, vol. 2 no. 2
Type: Research Article
ISSN: 0090-7324

Access Restricted. View access options
Article
Publication date: 1 January 1918

The Milk (Amendment) Order, 1917, which came into force on December 31st, provides that milk shall be sold retail only by Imperial measure; that no colouring matter shall be added…

31

Abstract

The Milk (Amendment) Order, 1917, which came into force on December 31st, provides that milk shall be sold retail only by Imperial measure; that no colouring matter shall be added to milk or cream intended for sale; that no milk to which any water has been added shall knowingly be sold or offered for sale; that no person may use for the purpose of his trade any milk can or milk bottle which bears the name, trade name, trade mark, or trade device of some person other than himself or his employer, except with the consent of such person. The Order contains a new clause, in substitution for Clauses 4 and 6 of the Milk Order, 1917 (which are revoked), providing that where milk is sold wholesale by or on behalf of any person other than the producer the maximum prices chargeable shall, unless otherwise determined, pursuant to the Order, be as follows:—

Details

British Food Journal, vol. 20 no. 1
Type: Research Article
ISSN: 0007-070X

1 – 10 of 430
Per page
102050