Search results

1 – 10 of 70
Per page
102050
Citations:
Loading...
Available. Open Access. Open Access
Article
Publication date: 7 September 2015

Hubert Zangl and Stephan Mühlbacher-Karrer

The purpose of this paper is to reduce the artifacts in fast Bayesian reconstruction images in electrical tomography. This is in particular important with respect to object…

1117

Abstract

Purpose

The purpose of this paper is to reduce the artifacts in fast Bayesian reconstruction images in electrical tomography. This is in particular important with respect to object detection in electrical tomography applications.

Design/methodology/approach

The authors suggest to apply the Box-Cox transformation in Bayesian linear minimum mean square error (BMMSE) reconstruction to better accommodate the non-linear relation between the capacitance matrix and the permittivity distribution. The authors compare the results of the original algorithm with the modified algorithm and with the ground truth in both, simulation and experiments.

Findings

The results show a reduction of 50 percent of the mean square error caused by artifacts in low permittivity regions. Furthermore, the algorithm does not increase the computational complexity significantly such that the hard real time constraints can still be met. The authors demonstrate that the algorithm also works with limited observations angles. This allows for object detection in real time, e.g., in robot collision avoidance.

Originality/value

This paper shows that the extension of BMMSE by applying the Box-Cox transformation leads to a significant improvement of the quality of the reconstruction image while hard real time constraints are still met.

Details

COMPEL: The International Journal for Computation and Mathematics in Electrical and Electronic Engineering, vol. 34 no. 5
Type: Research Article
ISSN: 0332-1649

Keywords

Available. Open Access. Open Access
Book part
Publication date: 4 June 2021

Kim Barker and Olga Jurasz

The ideal of an open, all-inclusive, and participatory internet has been undermined by the rise of gender-based and misogynistic abuse on social media platforms. Limited progress…

Abstract

The ideal of an open, all-inclusive, and participatory internet has been undermined by the rise of gender-based and misogynistic abuse on social media platforms. Limited progress has been made at supranational and national levels in addressing this issue, and where steps have been taken to combat online violence against women (OVAW), they are typically limited to legislative developments addressing image-based sexual abuse. As such, harms associated with image-based abuse have gained recognition in law while harms caused by text-based abuse (TBA) have not been conceptualized in an equivalent manner.

This chapter critically outlines the lack of judicial consideration given to online harms in British courts, identifying a range of harms arising from TBAs which currently are not recognized by the criminal justice system. We refer to non-traditional harms recognized in cases heard before the British courts, assessing these in light of traditionally recognized harms in established legal authorities. This chapter emphasizes the connection between the harms suffered and the recognition of impact on the victims, demonstrated through specific case studies. Through this assessment, this chapter advocates for greater recognition of online harms within the legal system – especially those which take the forms of misogynistic and/or gendered TBA.

Details

The Emerald International Handbook of Technology-Facilitated Violence and Abuse
Type: Book
ISBN: 978-1-83982-849-2

Keywords

Available. Open Access. Open Access
Article
Publication date: 15 January 2011

Justin Harris, Jacklyn Bruce and David Jones

The purpose of this study was to understand the types of texts currently being used and recommended within the field of leadership education. Data triangulation methods were used…

208

Abstract

The purpose of this study was to understand the types of texts currently being used and recommended within the field of leadership education. Data triangulation methods were used to identify academic and popular texts for a content analysis. Themes emerged relating to context, writing style, method, and content.

Details

Journal of Leadership Education, vol. 10 no. 1
Type: Research Article
ISSN: 1552-9045

Available. Open Access. Open Access
Article
Publication date: 20 January 2025

David Limond

This work concerns William Norman Illingworth [1902–1980]. Disillusioned with teaching in conventional schools and inspired by Rudolf Steiner [1861–1925] he founded Sangreal…

13

Abstract

Purpose

This work concerns William Norman Illingworth [1902–1980]. Disillusioned with teaching in conventional schools and inspired by Rudolf Steiner [1861–1925] he founded Sangreal School, in 1947, and operated this until the early 1970s. Sangreal was what I describe as a “conservative alternative school”, employing methods and pursuing goals not found in most British schools of the period but, unlike avowedly progressive establishments, guided by socially conservative principles. The purposes of the work are both to rescue his/Sangreal’s story from obscurity and to encourage research to establish if other such schools have existed and, if so, to describe and analyse them in an effort to give the category conservative alternative school the recognition it properly deserves.

Design/methodology/approach

The method is a combination of life history/biography and case study of a specific school.

Findings

The story is interesting in its own terms and points to the existence of a hitherto unnoticed category in history of education.

Research limitations/implications

This work may lead to the proper recognition of a neglected category.

Originality/value

This work deals with a school hitherto unknown to most people and may lead to the recognition of a new category.

Details

History of Education Review, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 0819-8691

Keywords

Available. Open Access. Open Access
Article
Publication date: 11 September 2018

Claudia Felix, Sebastian Aparicio and David Urbano

The purpose of this paper is to examine the influence of cultural leadership factors (charismatic/value-based, team oriented, participative, humane, autonomous and…

19757

Abstract

Purpose

The purpose of this paper is to examine the influence of cultural leadership factors (charismatic/value-based, team oriented, participative, humane, autonomous and self-protective) on the rates of opportunity and necessity entrepreneurship.

Design/methodology/approach

The study integrates insights from institutional and cultural leadership theories to provide a fresh perspective to advance comparative entrepreneurship research. To test the hypotheses, the authors conduct a multiple regression analysis with observations from 34 countries, using data (from the year 2013) from the Global Entrepreneurship Monitor for the dependent variable and from Global Leadership and Organizational Behavior Effectiveness to create leadership factors as independent variables.

Findings

The results show that all the types of leadership considered in the study have a relevant effect on entrepreneurial activity. However, charismatic leadership has a greater effect on entrepreneurial activity, particularly on opportunity entrepreneurship. The research also shows that autonomous leadership has a negative impact on entrepreneurial activity, although, when it is moderated by the humane dimension, this relationship changes.

Practical implications

Since the alternative dimensions facilitate or inhibit the generation of new firm creation, it is critical for researchers, teachers and leaders to learn about and to foster such leadership types.

Originality/value

This research covers a gap in the cross-cultural evidence presented in the literature and suggests the integration of the concepts leadership and entrepreneurship.

Details

Journal of Small Business and Enterprise Development, vol. 26 no. 3
Type: Research Article
ISSN: 1462-6004

Keywords

Available. Open Access. Open Access
Book part
Publication date: 9 December 2021

David J. Harper, Darren Ellis and Ian Tucker

This chapter focusses on the ethical issues raised by different types of surveillance and the varied ways in which surveillance can be covert. Three case studies are presented…

Abstract

This chapter focusses on the ethical issues raised by different types of surveillance and the varied ways in which surveillance can be covert. Three case studies are presented which highlight different types of surveillance and different ethical concerns. The first case concerns the use of undercover police to infiltrate political activist groups over a 40-year period in the UK. The second case study examines a joint operation by US and Australian law enforcement agencies: the FBI’s operation Trojan Shield and the AFP’s Operation Ironside. This involved distributing encrypted phone handsets to serious criminal organisations which included a ‘backdoor’ secretly sending encrypted copies of all messages to law enforcement. The third case study analyses the use of emotional artificial intelligence systems in educational digital learning platforms for children where technology companies collect, store and use intrusive personal data in an opaque manner. The authors discuss similarities and differences in the ethical questions raised by these cases, for example, the involvement of the state versus private corporations, the kinds of information gathered and how it is used.

Details

Ethical Issues in Covert, Security and Surveillance Research
Type: Book
ISBN: 978-1-80262-414-4

Keywords

Available. Open Access. Open Access

Abstract

Details

Histories of Punishment and Social Control in Ireland: Perspectives from a Periphery
Type: Book
ISBN: 978-1-80043-607-7

Available. Open Access. Open Access
Article
Publication date: 18 April 2020

Rama Krishna Kishore Vandavasi, David C. McConville, Jin-Feng Uen and Prasanthi Yepuru

The purpose of this study is to investigate the effect of knowledge sharing among team members on the development of shared leadership and innovative behaviour.

8351

Abstract

Purpose

The purpose of this study is to investigate the effect of knowledge sharing among team members on the development of shared leadership and innovative behaviour.

Design/methodology/approach

Data were collected from 64 management teams and 427 individuals working in 26 different hotels in the hospitality industry in Taiwan.

Findings

The results show that knowledge sharing has both direct and indirect effects on the development of shared leadership and individual innovative behaviour.

Research limitations/implications

Results suggest that knowledge sharing supports the occurrence of shared leadership, leading to an increase in innovative behaviour. The authors infer from the findings that encouraging a culture of knowledge sharing can have a positive impact on the creativity of teams.

Originality/value

This study advances knowledge of shared leadership as a mediator using a multilevel approach to test antecedents of innovative behaviour in the Taiwan hotel industry.

Details

International Journal of Manpower, vol. 41 no. 8
Type: Research Article
ISSN: 0143-7720

Keywords

Available. Open Access. Open Access
Article
Publication date: 26 July 2022

Rosse Marie Esparza Huamanchumo, Ricardo David Hernández-Rojas, Rosa Alejandra Longa-López and Martin Cárdenas-Jarama

The purpose of this study is to analyse Peruvian cuisine in the context of visitors’ overall experience, focusing on the loyalty of tourists in terms of gastronomy, their…

4634

Abstract

Purpose

The purpose of this study is to analyse Peruvian cuisine in the context of visitors’ overall experience, focusing on the loyalty of tourists in terms of gastronomy, their satisfaction with the destination, and the overall image.

Design/methodology/approach

Data were obtained from tourists who visited Lima (Peru). Structural equation modeling was used to verify the hypothesized relationships.

Findings

The results obtained confirm that satisfaction and appreciation, such as quality, have a positive influence on tourists’ loyalty and, therefore, they recommend and express their desire to come back to this destination. The traditional gastronomy of Lima stands out as a prominent factor on overall experience.

Research limitations/implications

This paper helps the managers of cities in their decisions to improve the satisfaction and seek loyalty of those who visit a city, emphasizes the role of gastronomy.

Practical implications

The results obtained in this research can be used for the establishment of new strategies for the promotion of the destination in terms of tourism and traditional food.

Originality/value

The gastronomy in Lima, (Peru) is recognized worldwide, as well as a stimulus for tourism because it increases the number of visits to the destination. Several studies carried out in these types of destinations have shown the existence of a relationship between gastronomy, overall experience, satisfaction and loyalty. However, there are no previous studies carried out in Lima that sustain this relationship. This work makes a contribution that completes the academic literature on the study of the emotional bonds between Peruvian gastronomy and the tourist who visits it and its behaviour.

Details

International Journal of Tourism Cities, vol. 9 no. 2
Type: Research Article
ISSN: 2056-5607

Keywords

Available. Open Access. Open Access
Article
Publication date: 28 September 2021

Alex Copping, Noorullah Kuchai, Laura Hattam, Natalia Paszkiewicz, Dima Albadra, Paul Shepherd, Esra Sahin Burat and David Coley

Understanding the supply network of construction materials used to construct shelters in refugee camps, or during the reconstruction of communities, is important as it can reveal…

2121

Abstract

Purpose

Understanding the supply network of construction materials used to construct shelters in refugee camps, or during the reconstruction of communities, is important as it can reveal the intricate links between different stakeholders and the volumes and speeds of material flows to the end-user. Using social network analysis (SNA) enables another dimension to be analysed – the role of commonalities. This is likely to be particularly important when attempting to replace vernacular materials with higher-performing alternatives or when encouraging the use of non-vernacular methods. This paper aims to analyse the supply networks of four different disaster-relief situations.

Design/methodology/approach

Data were collected from interviews with 272 displaced (or formally displaced) families in Afghanistan, Bangladesh, Nepal and Turkey, often in difficult conditions.

Findings

The results show that the form of the supply networks was highly influenced by the nature/cause of the initial displacement, the geographical location, the local availability of materials and the degree of support/advice given by aid agencies and or governments. In addition, it was found that SNA could be used to indicate which strategies might work in a particular context and which might not, thereby potentially speeding up the delivery of novel solutions.

Research limitations/implications

This study represents the first attempt in theorising and empirically investigating supply networks using SNA in a post-disaster reconstruction context. It is suggested that future studies might map the up-stream supply chain to include manufacturers and higher-order, out of country, suppliers. This would provide a complete picture of the origins of all materials and components in the supply network.

Originality/value

This is original research, and it aims to produce new knowledge.

Details

Journal of Humanitarian Logistics and Supply Chain Management, vol. 12 no. 1
Type: Research Article
ISSN: 2042-6747

Keywords

1 – 10 of 70
Per page
102050