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1 – 10 of 475
Article
Publication date: 9 October 2017

Ali Sohaib, Laurence Broadbent, Abdul Rehman Farooq, Lyndon Neal Smith and Melvyn Lionel Smith

Significant research has been carried out in terms of development of new bidirectional reflectance distribution function (BRDF) instruments; however, there is still little…

Abstract

Purpose

Significant research has been carried out in terms of development of new bidirectional reflectance distribution function (BRDF) instruments; however, there is still little research available regarding spectral BRDF measurements of human skin. This study aims to investigate the variation in human skin reflectance using a new fibre optic-based spectral-BRDF measurement device.

Design/methodology/approach

Design of this system mainly involves use of multiple fibre optics to illuminate and detect light reflected from a sample, whereas a hemispherical dome was 3D printed to mount the fibres at various slant/tilt angles. To investigate the spectral differences in BRDF of human skin, 3 narrowband filters in the visible spectrum were used, whereas measurements were taken from the back of the hand for Caucasian and Asian skin types.

Findings

The experiments demonstrate that the BRDF of human skin varies with wavelengths in the visible spectrum and it is also different for Caucasian and Asian skin types. Both skin types exhibit off-specular reflection with increase in angle of incidence and show less variation with respect to viewing angles when the angle of incidence is normal to the surface.

Research implications

A database of spectral BRDF measurements of human skin will help not only in creating realistic skin renderings but also in development of novel skin reflectance models for biomedical and machine vision applications. The measurements would also provide means to validate the predictions from existing light transport/spectral simulation models for human skin and will ultimately help in the accurate diagnosis and simulation of various skin disorders.

Originality/value

The proposed system provides fast scatter measurements by utilising multiple fibres to detect light simultaneously at different angles while also allowing easy switching between incident light directions. Due to its flexible design and contact-based measurements, the device is independent of errors due to sample movements and does not require any image registration. Also, measurements taken from the device show that the BRDF of skin varies significantly in the visible spectrum and it is different for Caucasian and Asian skin types.

Details

Sensor Review, vol. 37 no. 4
Type: Research Article
ISSN: 0260-2288

Keywords

Article
Publication date: 20 June 2016

Wenhao Zhang, Melvyn Lionel Smith, Lyndon Neal Smith and Abdul Rehman Farooq

This paper aims to introduce an unsupervised modular approach for eye centre localisation in images and videos following a coarse-to-fine, global-to-regional scheme. The design of…

Abstract

Purpose

This paper aims to introduce an unsupervised modular approach for eye centre localisation in images and videos following a coarse-to-fine, global-to-regional scheme. The design of the algorithm aims at excellent accuracy, robustness and real-time performance for use in real-world applications.

Design/methodology/approach

A modular approach has been designed that makes use of isophote and gradient features to estimate eye centre locations. This approach embraces two main modalities that progressively reduce global facial features to local levels for more precise inspections. A novel selective oriented gradient (SOG) filter has been specifically designed to remove strong gradients from eyebrows, eye corners and self-shadows, which sabotage most eye centre localisation methods. The proposed algorithm, tested on the BioID database, has shown superior accuracy.

Findings

The eye centre localisation algorithm has been compared with 11 other methods on the BioID database and six other methods on the GI4E database. The proposed algorithm has outperformed all the other algorithms in comparison in terms of localisation accuracy while exhibiting excellent real-time performance. This method is also inherently robust against head poses, partial eye occlusions and shadows.

Originality/value

The eye centre localisation method uses two mutually complementary modalities as a novel, fast, accurate and robust approach. In addition, other than assisting eye centre localisation, the SOG filter is able to resolve general tasks regarding the detection of curved shapes. From an applied point of view, the proposed method has great potentials in benefiting a wide range of real-world human-computer interaction (HCI) applications.

Details

Sensor Review, vol. 36 no. 3
Type: Research Article
ISSN: 0260-2288

Keywords

Book part
Publication date: 25 August 2021

Marina Uzunova

Today Lionel Penrose is recognised as the co-author of one of the two leading indices of power in voting legislatures – a field of study that game theory in general, and…

Abstract

Today Lionel Penrose is recognised as the co-author of one of the two leading indices of power in voting legislatures – a field of study that game theory in general, and cooperative game theory in particular, has been reclaiming from sociology and political science since the 1950s. The main claim of this paper is that Penrose developed his index so as to tackle questions that go vastly beyond the narrow domain of voting; namely, acute social issues during the Cold War such as the outburst and propagation of panics, the ideological susceptibility of populations, the escalation of military conflict and the successful installation of authoritarian regimes. Furthermore, by revisiting the history of the Penrose power index, the paper re-evaluates some of its key underlying assumptions: assumptions that have been heavily – and unfairly, as the paper argues – criticised over the last decade.

Details

Research in the History of Economic Thought and Methodology: Including A Symposium on Carl Menger at the Centenary of His Death
Type: Book
ISBN: 978-1-80071-144-0

Keywords

Article
Publication date: 1 January 1997

Lionel Smith

In Canada, money laundering has been an offence since 1989. Section 462.31(1) of the Criminal Code provides:

Abstract

In Canada, money laundering has been an offence since 1989. Section 462.31(1) of the Criminal Code provides:

Details

Journal of Financial Crime, vol. 4 no. 3
Type: Research Article
ISSN: 1359-0790

Article
Publication date: 21 September 2015

Jiuai Sun, Xiaoping Xu, Abdul Rehman Farooq, Lyndon Neal Smith and Melvyn Lionel Smith

This paper aims to review state of the art of techniques for dimensioning chronic wounds, and validate the possibilities of employing a new proposed optical imaging approach for…

Abstract

Purpose

This paper aims to review state of the art of techniques for dimensioning chronic wounds, and validate the possibilities of employing a new proposed optical imaging approach for general task of wound assessment.

Design/methodology/approach

Current techniques used for quantifying wound surface are reviewed and evaluated from various perspectives to exam their usability in wound care clinical settings. A photometric stereo (PS) approach will be identified and verified to work as an alternative solution to better satisfy practical requirements on quantifying the dimension of real and mocked wounds.

Findings

Both contact and contactless approaches provide some useful functions for wound management; however, new imaging modalities are still required for achieving good portability, affordability and applicability in assisting decision-making in clinical settings. The PS approach can work as a potential solution to provide these functionalities as well as dense geometrical and color texture information of measured areas. The experiments demonstrate that the new approach is able to conveniently produce comparable results to those from latest stereo vision-based techniques.

Research limitations/implications

This work proposed and initially verified the potential of PS technique for the task of wound measurement. Substantial improvements on the prototype and more clinical trials are still required to validate the new technique before it is accepted as a tool for practical wound measurement.

Originality/value

This new PS approach has good potential to reliably measure the dimension of wounds as well as recover their color texture which could contain additional valuable information for predicting a healing procedure for those wound occurring deeper underneath the skin surface.

Details

Sensor Review, vol. 35 no. 4
Type: Research Article
ISSN: 0260-2288

Keywords

Article
Publication date: 1 April 1932

THE programme of the Bournemouth Conference shows variety enough concentrated into its three days of business to satisfy even that Mr. Smith, of Leicester, who made Cheltenham…

Abstract

THE programme of the Bournemouth Conference shows variety enough concentrated into its three days of business to satisfy even that Mr. Smith, of Leicester, who made Cheltenham memorable for the cheap press. The main subject appears to be book selection of two kinds, adult and junior. Mr. Callender has been given a difficult task, and it does not appear conceivable that any very practical issue can come of the debate even with Mr. Jast as opener. Book‐selection must be the application of a series of definite answers to such questions as “What is a good book?” “What is a bad book?” “When may an inferior book prove to be the best for the end in view?” and so on; and that is a matter first for a committee, which may give well‐led and lengthy deliberation to the subject; it certainly won't come to much in open conference. Much the same must be the case with “An Analysis of Child Reading,” even if Mr. Osborne leads and Mr. Berwick Sayers follows him. On what enquiry will the analysis be based? Who has analysed children's reading in England on any scale that would justify public debate?

Details

New Library World, vol. 34 no. 10
Type: Research Article
ISSN: 0307-4803

Article
Publication date: 1 March 1997

Mona Vaswani

‘Tracing’ is the means by which a person who has been wrongly deprived of a thing attempts to identify and follow that thing, or its substitute in value, into the hands of other…

Abstract

‘Tracing’ is the means by which a person who has been wrongly deprived of a thing attempts to identify and follow that thing, or its substitute in value, into the hands of other persons to whom the thing or the value of the thing has passed. Once the value of the thing has been identified in the hands of the potential defendant, depending on the facts, the plaintiff is then in a position to bring a common law action for wrongful interference with his assets and/or make a claim in restitution in respect of those assets.

Details

Journal of Financial Crime, vol. 5 no. 1
Type: Research Article
ISSN: 1359-0790

Article
Publication date: 1 March 1918

On another page we reprint some of the specially library paragraphs from the Fourth Annual Report of the Carnegie Trustees; and we believe that no apology is necessary for…

Abstract

On another page we reprint some of the specially library paragraphs from the Fourth Annual Report of the Carnegie Trustees; and we believe that no apology is necessary for bringing them thus separately to all library workers. This beneficent institution is pursuing a policy in regard to our movement which, in its generosity, liberality, and at the same time cautious and wise restraint, must have the warm approval of librarians. It has been realized in a practical fashion that the library movement should not be allowed to stagnate during the war, because the most insistent calls upon the services and resources of libraries are likely to be made very soon after the cessation of hostilities, and if libraries are prepared now to meet those calls there should then be an impetus to the movement that will establish it finally.

Details

New Library World, vol. 20 no. 9
Type: Research Article
ISSN: 0307-4803

Article
Publication date: 1 March 1992

John Conway O'Brien

A collection of essays by a social economist seeking to balanceeconomics as a science of means with the values deemed necessary toman′s finding the good life and society enduring…

1240

Abstract

A collection of essays by a social economist seeking to balance economics as a science of means with the values deemed necessary to man′s finding the good life and society enduring as a civilized instrumentality. Looks for authority to great men of the past and to today′s moral philosopher: man is an ethical animal. The 13 essays are: 1. Evolutionary Economics: The End of It All? which challenges the view that Darwinism destroyed belief in a universe of purpose and design; 2. Schmoller′s Political Economy: Its Psychic, Moral and Legal Foundations, which centres on the belief that time‐honoured ethical values prevail in an economy formed by ties of common sentiment, ideas, customs and laws; 3. Adam Smith by Gustav von Schmoller – Schmoller rejects Smith′s natural law and sees him as simply spreading the message of Calvinism; 4. Pierre‐Joseph Proudhon, Socialist – Karl Marx, Communist: A Comparison; 5. Marxism and the Instauration of Man, which raises the question for Marx: is the flowering of the new man in Communist society the ultimate end to the dialectical movement of history?; 6. Ethical Progress and Economic Growth in Western Civilization; 7. Ethical Principles in American Society: An Appraisal; 8. The Ugent Need for a Consensus on Moral Values, which focuses on the real dangers inherent in there being no consensus on moral values; 9. Human Resources and the Good Society – man is not to be treated as an economic resource; man′s moral and material wellbeing is the goal; 10. The Social Economist on the Modern Dilemma: Ethical Dwarfs and Nuclear Giants, which argues that it is imperative to distinguish good from evil and to act accordingly: existentialism, situation ethics and evolutionary ethics savour of nihilism; 11. Ethical Principles: The Economist′s Quandary, which is the difficulty of balancing the claims of disinterested science and of the urge to better the human condition; 12. The Role of Government in the Advancement of Cultural Values, which discusses censorship and the funding of art against the background of the US Helms Amendment; 13. Man at the Crossroads draws earlier themes together; the author makes the case for rejecting determinism and the “operant conditioning” of the Skinner school in favour of the moral progress of autonomous man through adherence to traditional ethical values.

Details

International Journal of Social Economics, vol. 19 no. 3/4/5
Type: Research Article
ISSN: 0306-8293

Keywords

Book part
Publication date: 14 December 2017

Eric S. Brown

This paper analyzes the connection between black political protest and mobilization, and the rise and fall of a black urban regime. The case of Oakland is instructive because by…

Abstract

This paper analyzes the connection between black political protest and mobilization, and the rise and fall of a black urban regime. The case of Oakland is instructive because by the mid-1960s the ideology of “black power” was important in mobilizing two significant elements of the historically disparaged black community: (1) supporters of the Black Panthers and, (2) neighborhood organizations concentrated in West Oakland. Additionally, Oakland like the city of Atlanta also developed a substantial black middle class that was able to mobilize along the lines of its own “racialized” class interests. Collectively, these factors were important elements in molding class-stratified “black power” and coalitional activism into the institutional politics of a black urban regime in Oakland. Ultimately, reversal factors would undermine the black urban regime in Oakland. These included changes in the race and class composition of the local population: black out-migration, the “new immigration,” increasing (predominantly white) gentrification, and the continued lack of opportunity for poor and working-class blacks, who served as the unrequited base of the black urban regime. These factors would change the fortunes of black political life in Oakland during the turbulent neoliberal era.

Details

On the Cross Road of Polity, Political Elites and Mobilization
Type: Book
ISBN: 978-1-78635-480-8

Keywords

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