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Article
Publication date: 16 August 2024

M. Alosaimi and D. Lesnic

In order to include the non-negligible lag relaxation time feature that is characteristic of heat transfer in biological bodies, the classical Fourier's law of heat conduction has…

36

Abstract

Purpose

In order to include the non-negligible lag relaxation time feature that is characteristic of heat transfer in biological bodies, the classical Fourier's law of heat conduction has to be generalized as the Maxwell–Cattaneo law resulting in the thermal-wave model of bio-heat transfer. The purpose of the paper is to retrieve the unknown time-dependent blood perfusion coefficient in such a thermal-wave model of bio-heat transfer from (non-intrusive) measurements of the temperature on an accessible sub-portion of the boundary that may be taken with an infrared scanner.

Design/methodology/approach

The nonlinear and ill-posed problem is reformulated as a nonlinear minimization problem of a Tikhonov regularization functional subject to lower and upper simple bounds on the unknown coefficient. For the numerical discretization, an unconditionally stable direct solver based on the Crank–Nicolson finite-difference scheme is developed. The Tikhonov regularization functional is minimized iteratively by the built-in routine lsqnonlin from the MATLAB optimization toolbox. Numerical results for a benchmark test example are presented and thoroughly discussed, shedding light on the performance and effectiveness of the proposed methodology.

Findings

The inverse problem of obtaining the time-dependent blood perfusion coefficient and the temperature in the thermal-wave model of bio-heat transfer from extra boundary temperature measurement has been solved. In particular, the uniqueness of the solution to this inverse problem has been established. Furthermore, our proposed computational method demonstrated successful attainment of the perfusion coefficient and temperature, even when dealing with noisy data.

Originality/value

The originalities of the present paper are to account for such a more representative thermal-wave model of heat transfer in biological bodies and to investigate the possibility of determining its time-dependent blood perfusion coefficient from non-intrusive boundary temperature measurements.

Details

Engineering Computations, vol. 41 no. 7
Type: Research Article
ISSN: 0264-4401

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Article
Publication date: 7 March 2023

M.A. Alosaimi and D. Lesnic

When modeling heat propagation in biological bodies, a non-negligible relaxation time (typically between 15-30 s) is required for the thermal waves to accumulate and transfer…

61

Abstract

Purpose

When modeling heat propagation in biological bodies, a non-negligible relaxation time (typically between 15-30 s) is required for the thermal waves to accumulate and transfer, i.e. thermal waves propagate at a finite velocity. To accommodate for this feature that is characteristic to heat transfer in biological bodies, the classical Fourier's law has to be modified resulting in the thermal-wave model of bio-heat transfer. The purpose of the paper is to retrieve the space-dependent blood perfusion coefficient in such a thermal-wave model of bio-heat transfer from final time temperature measurements.

Design/methodology/approach

The non-linear and ill-posed blood perfusion coefficient identification problem is reformulated as a non-linear minimization problem of a Tikhonov regularization functional subject to lower and upper simple bounds on the unknown coefficient. For the numerical discretization, an unconditionally stable direct solver based on the Crank–Nicolson finite difference scheme is developed. The Tikhonov regularization functional is minimized iteratively by the built-in routine lsqnonlin from the MATLAB optimization toolbox. Both exact and numerically simulated noisy input data are inverted.

Findings

The reconstruction of the unknown blood perfusion coefficient for three benchmark numerical examples is illustrated and discussed to verify the proposed numerical procedure. Moreover, the proposed algorithm is tested on a physical example which consists of identifying the blood perfusion rate of a biological tissue subjected to an external source of laser irradiation. The numerical results demonstrate that accurate and stable solutions are obtained.

Originality/value

Although previous studies estimated the important thermo-physical blood perfusion coefficient, they neglected the wave-like nature of heat conduction present in biological tissues that are captured by the more accurate thermal-wave model of bio-heat transfer. The originalities of the present paper are to account for such a more accurate thermal-wave bio-heat model and to investigate the possibility of determining its space-dependent blood perfusion coefficient from temperature measurements at the final time.

Details

Engineering Computations, vol. 40 no. 2
Type: Research Article
ISSN: 0264-4401

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Book part
Publication date: 6 March 2025

Neha Bansal and Sanjay Taneja

Introduction: Regulatory technology (Regtech) uses technology and innovative techniques to improve and expedite regulatory compliance procedures across various sectors, notably…

Abstract

Introduction: Regulatory technology (Regtech) uses technology and innovative techniques to improve and expedite regulatory compliance procedures across various sectors, notably the financial industry. This chapter closely examines how Regtech is being used in the financial sector.

Purpose: This study examines the adoption and implementation of Regtech solutions in the financial sector. It aims to identify the leading technologies propelling the adoption of Regtech and the benefits and challenges financial institutions face when implementing Regtech solutions for regulatory compliance.

Need of the Study: The study examines the increasing demand for effective regulatory compliance in the financial sector. Financial institutions seek novel ways to streamline compliance procedures as regulatory complexities increase. This study fulfills the need to examine the adoption of Regtech as a potential solution to enhance regulatory compliance’s efficiency and effectiveness.

Research Methodology: This chapter’s research methodology entails a comprehensive review of existing studies, and examples to collect pertinent data and insights. The current study provides an extensive and comprehensive view of the existing studies. Examining real-world examples provides practical examples and demonstrates the efficacy of Regtech in the financial sector.

Findings: The findings reveal that the adoption of Regtech is gaining momentum in the financial industry, with increasing recognition of its potential benefits. Financial institutions leverage Regtech solutions to automate compliance processes, monitor regulatory changes, and enhance risk management practices. However, technological complexities, regulatory constraints, and data security concerns pose significant hurdles to widespread adoption.

Details

Financial Landscape Transformation: Technological Disruptions
Type: Book
ISBN: 978-1-83753-751-8

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Article
Publication date: 27 August 2024

Nguyen Vinh Khuong, Mai Quynh Anh, Mai Thi Thanh Thao, Tran Thanh Thao, Nguyen Hong Hanh and Le Thi Hoai Vy

This study seeks to evaluate gender diversity within family members and analyze its effects on financial distress in firms listed in Vietnam.

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Abstract

Purpose

This study seeks to evaluate gender diversity within family members and analyze its effects on financial distress in firms listed in Vietnam.

Design/methodology/approach

The research employs a Generalized Method of Moments (GMM) regression model to assess the impact of gender diversity on corporate board performance, including factors such as the presence and proportion of female directors, female directors with family ties and the gender of CEOs. The study covers 152 listed companies on the HNX and HOSE exchanges from 2015 to 2022. The GMM model is chosen for its robustness in dealing with endogeneity issues and its ability to provide consistent estimates in the presence of potential correlation between explanatory variables and unobserved effects. This approach allows for a more accurate evaluation of how gender diversity influences operational efficiency and how these companies manage financial difficulties within the sample period.

Findings

Our research shows that diversity on the Board of Directors (BOD) as well as female CEO employment not only does not reduce the financial distress of businesses but also increases this situation. However, being both a female and a family member of the BOD is negatively related to financial distress. This can help female members who have connections with the family contribute to the work of adjusting and monitoring the business's operations to suit the family's goals, contributing to improving the operational efficiency of the business. BOD maximizes profits and contributes to promoting the company's sustainable development goals. From there, limited ability to travel and financial exhaustion.

Practical implications

The empirical results obtained from this study contribute to building a solid knowledge base, supporting businesses in the policymaking process and providing empirical evidence to enrich learning materials.

Originality/value

This study provides empirical evidence on how gender diversity influences the financial challenges of businesses, especially within the context of publicly listed companies in Vietnam. It stands out from previous literature by specifically focusing on listed companies in Vietnam. By analyzing the impact of gender diversity on financial difficulties, this study also clarifies how various factors can influence management and business development.

Details

Journal of Family Business Management, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 2043-6238

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Article
Publication date: 28 June 2023

Saddam A. Hazaea, Ebrahim Mohammed Al-Matari, Najib H.S. Farhan and Jinyu Zhu

In recent years, mandatory rules and regulations were issued to stress the importance of increasing gender diversity in companies, assuming that gender diversity would enhance…

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Abstract

Purpose

In recent years, mandatory rules and regulations were issued to stress the importance of increasing gender diversity in companies, assuming that gender diversity would enhance financial performance. Thus, the purpose of this paper is to review recent research concerning board gender diversity and its impact on financial performance for the period of 2002 to 2022.

Design/methodology/approach

Using the Web of Science and Scopus databases, 152 studies were analyzed, out of 91 high-impact journals. The analysis focuses on discussing the moderating, mediating and controlling variables and exploring the theories and theoretical foundations that are most prevalent in the literature.

Findings

The findings indicated an incompatibility between the results of the studies on the impact of gender diversity on financial performance. In addition, results showed the majority of studies focused on discussing the controlling variables associated with the company compared to the variables related to employees or the surrounding environment. On the other hand, the results also showed widespread use of the theoretical basis with the development of new theories in the recent period in parallel with the increase in the literature.

Originality/value

The results of this study help to reconcile the findings of the different and conflicting literature by presenting the perception that the efficacy of the positive impact of gender diversity on financial performance is related to several organizational and environmental factors that companies have to consider.

Details

Corporate Governance: The International Journal of Business in Society, vol. 23 no. 7
Type: Research Article
ISSN: 1472-0701

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Article
Publication date: 29 April 2020

Moataz Alosaimi, Daniel Lesnic and Jitse Niesen

This study aims to at numerically retrieve five constant dimensional thermo-physical properties of a biological tissue from dimensionless boundary temperature measurements.

100

Abstract

Purpose

This study aims to at numerically retrieve five constant dimensional thermo-physical properties of a biological tissue from dimensionless boundary temperature measurements.

Design/methodology/approach

The thermal-wave model of bio-heat transfer is used as an appropriate model because of its realism in situations in which the heat flux is extremely high or low and imposed over a short duration of time. For the numerical discretization, an unconditionally stable finite difference scheme used as a direct solver is developed. The sensitivity coefficients of the dimensionless boundary temperature measurements with respect to five constant dimensionless parameters appearing in a non-dimensionalised version of the governing hyperbolic model are computed. The retrieval of those dimensionless parameters, from both exact and noisy measurements, is successfully achieved by using a minimization procedure based on the MATLAB optimization toolbox routine lsqnonlin. The values of the five-dimensional parameters are recovered by inverting a nonlinear system of algebraic equations connecting those parameters to the dimensionless parameters whose values have already been recovered.

Findings

Accurate and stable numerical solutions for the unknown thermo-physical properties of a biological tissue from dimensionless boundary temperature measurements are obtained using the proposed numerical procedure.

Research limitations/implications

The current investigation is limited to the retrieval of constant physical properties, but future work will investigate the reconstruction of the space-dependent blood perfusion coefficient.

Practical implications

As noise inherently present in practical measurements is inverted, the paper is of practical significance and models a real-world situation.

Social implications

The findings of the present paper are of considerable significance and interest to practitioners in the biomedical engineering and medical physics sectors.

Originality/value

In comparison to Alkhwaji et al. (2012), the novelty and contribution of this work are as follows: considering the more general and realistic thermal-wave model of bio-heat transfer, accounting for a relaxation time; allowing for the tissue to have a finite size; and reconstructing five thermally significant dimensional parameters.

Details

International Journal of Numerical Methods for Heat & Fluid Flow, vol. 30 no. 12
Type: Research Article
ISSN: 0961-5539

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Article
Publication date: 7 December 2020

Saeed Awadh Bin-Nashwan, Hijattulah Abdul-Jabbar, Saliza Abdul Aziz and Adel Sarea

Although Zakah is the cornerstone of the social protection system in Muslim societies, providing relief to those in need and collecting funds from those who have access to money…

1186

Abstract

Purpose

Although Zakah is the cornerstone of the social protection system in Muslim societies, providing relief to those in need and collecting funds from those who have access to money and property, many administrative and legal improvements need to be made to ensure that Zakah funds are managed effectively and efficiently in Muslim states. It is therefore important to recognize why some Muslims are not paying their Zakah through Zakah authorities. The purpose of this paper is to propose a viable and comprehensive research model, derived from an economic and socio-psychological perspective, to provide a richer understanding of Zakah payers’ compliance behaviour.

Design/methodology/approach

Drawing on extant literature, this study offers a conceptual framework for a better understanding of compliance behaviour by proposing an economic and socio-psychological model based on Fischer’s tax compliance model, which could be applied cautiously in an Islamic setting like Zakah.

Findings

The four main categories of the Fischer model are derived from socio-psychological and economic perspectives, namely, attitude and perception (system fairness, ethics and peer influence); Zakah system structure (Zakah law complexity and law enforcement); non-compliance opportunity (education level, wealth source and occupation); and demographic factors (age and gender). Each has much to offer in understanding Zakah payers’ compliance decisions. To suit the nature of Zakah, the influence of Islamic religiosity and the moderating effect of trust in the Zakah institution are incorporated into the model.

Practical implications

Those Muslim communities that strive to have functional Zakah systems to search for solutions to the perennial problem of low Zakah funding and its damning consequences, are offered a compliance model for systematically assessing Muslims’ compliance behaviour with Zakah provisions. This framework is anticipated to offer invaluable input to policymakers in streaming and strategizing the minimization of losses of Zakah revenue to Zakah authorities.

Originality/value

Although behavioural models such as the theory of reasoned action and the theory of planned behaviour have been extensively used in Zakah compliance studies, to the best of the authors’ knowledge, this study is perhaps the first to apply a socio-psychological and economic framework, emerging from tax literature, in the Zakah environment to develop fully understanding of Zakah payers’ compliance decisions.

Details

Journal of Financial Reporting and Accounting, vol. 19 no. 3
Type: Research Article
ISSN: 1985-2517

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Article
Publication date: 17 September 2024

Maha Shehadeh, Fatma Ahmed, Khaled Hussainey and Fadi Alkaraan

This study investigates the impact of corporate governance on FinTech disclosure levels in Jordanian conventional and Islamic banks. It aims to determine whether governance…

305

Abstract

Purpose

This study investigates the impact of corporate governance on FinTech disclosure levels in Jordanian conventional and Islamic banks. It aims to determine whether governance mechanisms affect disclosure practices in the FinTech sector, exploring the interplay between governance and transparency in financial innovations.

Design/methodology/approach

The research methodology entails a thorough analysis of data from all 15 Jordanian conventional and Islamic banks listed on the Amman Stock Exchange, covering the period from 2015 to 2022. This study uses manual content analysis using a custom FinTech Disclosure Index (FDI) and quantitative analysis with a two-way clustered error regression model.

Findings

The findings show that corporate governance mechanisms, particularly board size, board meetings and “Big4” audit firms, are crucial in enhancing FinTech disclosure across conventional and Islamic banks. However, Islamic banks consistently show higher disclosure levels than their conventional counterparts, attributed to their distinct governance structures that emphasize ethical governance and transparency. These results indicate an awareness among decision-makers about the importance of business model transformation toward FinTech.

Originality/value

This study pioneers the introduction of FDI, using it for a novel comparative analysis of FinTech disclosure levels between Islamic and conventional banks. By exploring how various governance structures influence FinTech disclosure, this research provides fresh insights into the interplay between corporate governance and financial technologies in the banking sector.

Details

Competitiveness Review: An International Business Journal, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1059-5422

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Book part
Publication date: 26 April 2022

Russell Foote and Eglantina Hysa

In this chapter, the authors present several current issues that are representative of chinks’ in the armor of university administration today. This study brings into attention…

Abstract

In this chapter, the authors present several current issues that are representative of chinks’ in the armor of university administration today. This study brings into attention the importance of philosophy, society, development and education that serve to strengthen the operational–development nexus in higher education institutions. The objectives are (i) to draw the attention of administrators to these “chinks” in the armor of university operations; (ii) to indicate how their resolution can strengthen the operations–development nexus; and (iii) to encourage continuous reflection on the background of better understandings of a philosophy of management, society, development and education.

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Article
Publication date: 22 December 2023

Zakeya Sanad and Hidaya Al Lawati

In recent years, the field of financial technology (Fintech) has garnered significant attention due to advancements in technology, evolving consumer preferences and the growing…

516

Abstract

Purpose

In recent years, the field of financial technology (Fintech) has garnered significant attention due to advancements in technology, evolving consumer preferences and the growing need for financial services that are more accessible and user-friendly. The exponential expansion of Fintech is presenting novel prospects and obstacles for business. This study aims to investigate the relationship between gender diversity on corporate boards and firms’ performance, with a particular focus on the moderating role of Fintech.

Design/methodology/approach

The study sample consisted of financial sector firms listed on the Bahrain Bourse (banks and insurance firms) during the period 2016–2022. The data were gathered primarily from annual reports and the Bahrain Bourse website. The independent variable represents the percentage of female directors on corporate boards while firms’ accounting and market-based performance were measured using return on assets and Tobin’s Q variables. The moderating variable, Fintech, was measured using a checklist developed using the Global Fintech Adoption Index. Fixed effect (FE) regression was used to analyze the study data. An alternative gender diversity measure was used to test the reliability of the main regression analysis.

Findings

The results of the study indicate a positive relationship between gender diversity on corporate boards and financial performance. Additionally, the findings of the study highlighted the positive impact of Fintech practices on firms’ performance. Nevertheless, the impact of Fintech on the relationship between board gender diversity and corporate performance was found to be insignificant.

Research limitations/implications

The study sample included a particular sector in a single country, which may limit the generalizability of the findings. Also, the current study applied FE regression to analyze the data; however, other econometric approaches could be used to overcome the endogeneity issue.

Practical implications

The findings of this study may have implications for policymakers and society, particularly in terms of promoting gender diversity and Fintech innovation.

Originality/value

This study contributes to the existing body of research by examining the potential impact of the percentage of female directors and the utilization of Fintech on firms’ performance in Bahrain. Given the ongoing endeavors to provide advanced Fintech solutions in the financial sector and the increasing focus on enhancing gender diversity in Bahraini corporate boards, this research aims to provide additional evidence in this domain. Moreover, this study stands out as one of the limited number of research endeavors that use Fintech as a moderating variable in the investigation of the impact of female directors on firms’ performance.

Details

Competitiveness Review: An International Business Journal , vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1059-5422

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