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To propose an improved algorithm for the state estimation of distribution networks based on the unscented Kalman filter (IUKF). The performance comparison of unscented Kalman filter (UKF) and newly developed algorithm, termed Improved unscented Kalman Filter (IUKF) for IEEE-30, 33 and 69-bus radial distribution networks for load variations and bad data for two measurement noise scenarios, i.e. 30 and 50 per cent are shown.

State estimation (SE) plays an instrumental role in realizing smart grid features like distribution automation (DA), enhanced distribution generation (DG) penetration and demand response (DR). Implementation of DA requires robust, accurate and computationally efficient dynamic SE techniques that can capture the fast changing dynamics of distribution systems more effectively. In this paper, the UKF is improved by changing the way the state covariance matrix is calculated, to enhance its robustness and accuracy under noisy measurement conditions. UKF and proposed IUKF are compared under the cummulative effect of load variations and bad data based on various statistical metrics such as Maximum Absolute Deviation (MAD), Maximum Absolute Per cent Error (MAPE), Root Mean Square Error (RMSE) and Overall Performance Index (J) for three radial distribution networks. All the simulations are performed in MATLAB 2014b environment running on an hp core i5 laptop with 4GB memory and 2.6 GHz processor.

An Improved Unscented Kalman Filter Algorithm (IUKF) is developed for distribution network state estimation. The developed IUKF is used to predict network states (voltage magnitude and angle at all buses) and measurements (source voltage magnitude, line power flows and bus injections) in the presence of load variations and bad data. The statistical performance of the coventional UKF and the proposed IUKF is carried out for a variety of simulation scenarios for IEEE-30, 33 and 69 bus radial distribution systems. The IUKF demonstrated superiority in terms of: RMSE; MAD; MAPE; and overall performance index J for two measurement noise scenarios (30 and 50 per cent). Moreover, it is shown that for a measurement noise of 50 per cent and above, UKF fails while IUKF performs.

UKF shows degraded performance under high measurement noise and fails in some cases. The proposed IUKF is shown to outperform the UKF in all the simulated scenarios. Moreover, this work is novel and has justified improvement in the robustness of the conventional UKF algorithm.

The purpose of the paper is to showcase the significant achievements of Egypt's scientists in the 20th century across various fields of study such as medicine, physics, chemistry, biology, math, geology, astronomy and engineering. The paper highlights the struggles and successes of these scientists, as well as the cultural, social and political factors that influenced their lives and work. The aim is to inspire young people to pursue careers in science and make their own contributions to society by presenting these scientists as role models for hard work and dedication. Ultimately, the paper seeks to promote the importance of science and its impact on society.

The purpose of this review is to present the scientific biographies of Egypt's most distinguished scientists, primarily in the field of Natural Sciences, in a balanced and comprehensive manner. The work is objective, honest and abstract, avoiding any bias or exaggeration. The author provides a clear and concise methodology, including a brief introduction to the scientist and their field of study, an explanation of their major contributions, the impact of their work on society, any challenges or obstacles faced during their career and their lasting legacy. The aim is to showcase the important achievements of these scientists, their impact on their respective fields and to inspire future generations to pursue scientific careers.

The group of outstanding scientists in 20th century Egypt were shaped by various factors, including familial upbringing, education, society, political and cultural atmosphere and state support for scientific research. These scientists made significant contributions to various academic disciplines, including medicine, physics, chemistry, biology, mathematics and engineering. Their impact on their communities and cultures has received international acclaim, making them role models for future generations of scientists and researchers. The history of these scientists highlights the importance of educational investments and supporting scientific research to foster innovation and social progress. The encyclopedia serves as a useful tool for students, instructors and education professionals, preserving Egypt's scientific heritage and honouring the scientists' outstanding accomplishments.

The encyclopedia preserves Egypt's scientific heritage, which has been overlooked for political or other reasons. It is a useful tool for a variety of readers, including students, instructors and education professionals, and it offers insights into universally relevant scientific success factors as well as scientific research methodologies. The encyclopedia honours the outstanding scientific accomplishments of Egyptian researchers and their contributions to the world's scientific community.

The practical implications of this paper are several. First, it highlights the importance of education, family upbringing and societal support for scientific research in fostering innovation and social progress. Second, it underscores the need for continued funding and support for scientific research to maintain and build upon the accomplishments of past generations of scientists. Third, it encourages young people to pursue scientific careers and make their own contributions to society. Fourth, it preserves the scientific heritage of Egypt and honors the contributions of its outstanding scientists. Finally, it serves as a useful tool for students, instructors and education professionals seeking to understand the factors underlying scientific success and research methodologies.

The social implications of the paper include promoting national pride and cultural identity, raising awareness of the importance of education and scientific research in driving social progress, inspiring future generations of scientists and researchers, reducing socioeconomic disparities and emphasizing the role of society, politics and culture in shaping scientific researchers' personalities and interests.

The paper's originality/value lies in its comprehensive documentation of the scientific biographies of Egypt's most prominent scientists in the 20th century, providing unique insights into the factors that contributed to their development and their impact across various academic disciplines. It preserves Egypt's scientific heritage and inspires future generations of scientists and researchers through the promotion of educational investments and scientific research. The encyclopedia serves as a useful tool for education professionals seeking to understand scientific success factors and research methodologies, emphasizing the importance of supportive and inclusive environments for scientific development.

This study aims to examine how corporate financial flexibility, financial sector development and the regulatory environment influence corporate investment decisions in an emerging economy after controlling for several macroeconomic factors.

The authors estimated random-effects models to empirically examine the impacts of corporate financial flexibility, banking sector development, equity market development, regulatory quality and corruption on corporate investment decisions. The empirical analysis is based on an unbalanced annual panel data set of a sample of 198 non-financial firms listed on the Pakistan Stock Exchange for the period 1992–2018.

The results show that financially flexible firms tend to invest more. The increased banking sector development, stock market development and better regulatory quality play a pivotal role for enabling firms to increase their investment ability. However, the results reveal that corruption acts as a barrier and reduces corporate investments during the examined period. The results suggest that unused borrowing capacity is a good source of financial flexibility. These results strongly support the pecking order theory, which explains why firms incline toward internal sources for financing their investments and why they prefer debt to equity when go for external financing.

The empirical findings of the study enable corporate managers to make better financing and investment decisions by understanding the significance of the attainment and maintenance of the corporate financial flexibility to enhance firm value. Furthermore, the findings enable corporate managers to examine and understand the role of banking sector development (BSD), equity market development (EMD), regulatory quality and the role of corruption in affecting corporate firms' investment ability, allowing them to make appropriate investment decisions, especially from an emerging economy perspective. The findings also help investors in making appropriate investment decisions while they are purchasing financial assets. Finally, the findings of the study have some implications for regulators as well. Specifically, the findings suggest that the authorities should implement economic and financial policies favoring banking sector as well as equity market development to enhance corporate investment.

The study significantly adds to the literature by examining the impact of financial flexibility, financial sector development and regulatory environment on corporate investment decisions. According to the authors' knowledge, the empirical evidence examining the impact of all of these factors on corporate investment is very scarce. Therefore, this study is an effort to fill the gap left in the literature.

The purpose of this study is to investigate the role of Auditing and Accounting Organization for Islamic Financial Institution (AOIFI) governance disclosure on the performance of Islamic financial institutions (IFIs) through systematic literature review approach.

This study is based on the review of literature related to the AAOIFI accounting standards downloaded from Scopus database. This study includes review of 126 research articles, 10 review papers, 9 book chapters and 5 conference papers related to different roles played by AAOIFI in providing standards for accounting, auditing, governance and ethics for global IFIs.

The findings of this study suggest that AAOIFI has played a critical role in developing the accounting standards for the IFIs and contributed positively to the overall growth of the Islamic finance industry.

AAOIFI has played a critical role in issuing and development of accounting and auditing standards and has contributed positively to the financial performance of IFIs. Research gaps are identified, and there is a need to work on these gaps.

This study will contribute to the understanding the role of AAOIFI in issuing and development of accounting and governance standards and future research agenda based on a thorough review of literature.

The purpose of this study is to provide quantitative information about the development of Islamic financial management literature. For this purpose, it is aimed to draw attention to the development of this field by revealing the literature gap in the field of Islamic financial management.

In this study, the document analysis method is used and the Web of Science (WOS) site is used to obtain the desired data. The time range of the study covers the years 1980–2023/January. The results obtained from the scans were analyzed by the bibliometric analysis method. The data obtained within the scope of the study are classified and analyzed using the VOSviewer program, which is one of the many software developed for scientific mapping analysis. The obtained data are presented in a certain order with the visual mapping method.

In the analyses made, bibliometric analysis based on document review and including the subject of “Islamic financial management” in the WOS database between the relevant years has not been used in any study, which points to an important gap in the literature. However, 3,022 studies on “Financial management” and 1,830 studies on “Islamic finance” have been identified. Although there is no data on “Financial Management”, the subjects of “Islamic finance” and “Financial management” related to the subject have been evaluated in terms of countries, the most publishing organizations, authors, publications and word–word groups, using the bibliometric analysis method, as well as making numerical and visual evaluations. These studies show that an infrastructure to include the subject of “Islamic financial management” has not been formed in the literature.

This study points to an important gap in the literature. The subjects of “Islamic finance” and “Financial management” have been sufficiently covered in the literature separately. By combining this knowledge with new studies there appears an environment where original studies on the subject of “Islamic financial management” can be made and this study is aimed to shed light on this virgin area.

In the literature bibliometric analysis based on document review including the subject of “Islamic financial management” has not been used in any study. To the best of the author’s knowledge this study is the first in the literature to address the related issue and with it an important gap in the literature has been identified and an important case that will be a source for future studies has been revealed.

The purpose of this paper is to identify the roles of government in promoting halal logistics.

This paper applied a systematic literature review (SLR) technique to assess published halal logistics academic literature.

The review identified six roles, namely, regulation, financial incentives, taxation, infrastructure, guidance and encouragement and education and labour supply.

This systematic review paper is considered amongst the first to attempt to consolidate the dispersed halal logistics literature and to systematically accentuate the pivotal role of government in the halal logistics industry.

Corporate corruption reporting (CCR) is an emerging issue of the corporation for measuring transparency, integrity and accountability to the stakeholders and society. The purpose of this paper is to examine the role of CCR and financial management responsibility regarding the issue of corruption control.

To explore the influences of corruption disclosure, this study considers the keywords-based content analysis of the listed financial firms of the Dhaka Stock Exchange in Bangladesh for 2012–2016. The research considers stakeholders and theoretical legitimacy lens for discussing corporate corruption disclosure. This study identified 143 self-driven keywords by classifying, analyzing and selecting the appropriate large set of keywords from the prior literature. This study examines 247 firm-year observations of all financial firms in Bangladesh using secondary data sources.

The results of the hierarchical regression analysis report that financial firms following Sharia principles have a negative and significant association with CCR, while Big4 has a positive and significant influence. Moreover, the interaction effect of Big4 on the relationship between Sharia principles and CCR is negative and insignificant. The findings reported that Islamic financial firms disclose less corruption information than conventional financial firms in Bangladesh.

This study findings are expected to significantly impact corporate management and policymakers of developing and highly corrupted economies to enhance corporate accountability, transparency and reputation. The regulatory body can consider the findings to promulgate anti-corruption reporting rules and regulations.

The authors believe the theoretical lens used to support the method and findings of this paper are unique and novel.

This study aims to analyze the International Journal of Islamic and Middle Eastern Finance and Management (IMEFM) publication structure based on broad criteria including citations, authors, institutions, countries, papers and keywords using the Scopus database over a period of 12 years.

In this paper, the bibliometric technique is used to analyze the advancement of IMEFM. Bibliometrics is a research field of library and information science that studies bibliographic material with quantitative methods.

The results show a steady increase in the citation and publication structure of the IMEFM. That reflects its developing stature as a key academic outlet. The journal is advancing knowledge in Islamic finance and management research.

This study presents a macro view of the journey of IMEFM over the past 12 years. That presents the audience with an opportunity to understand the trend and focus of the journal.

Bibliometric analysis contributed to the theoretical development of the IMEFM journal in the following ways. First, it describes the evolution and intellectual structure by identifying and classifying the most common themes in the journal. More specifically, this analysis underscores two important milestones: IMEFM has emerged as a robust academic outlet, and its comprehensive focus on Islamic finance and other related areas. Furthermore, the bibliometric analysis of IMEFM’s citations and knowledge stock pattern summarizes the scientific community contributing to its evolution and development. Finally, this study’s results offer future research directions.

This study aims to describe the role of knowledge diffusion in evolving governance principles for Islamic banking.

This study develops a discursive theoretical debate using the discourse analysis method on the Sharīʿah principles related to interest (Riba), excessive uncertainty (Gharrar) and profit and loss sharing and their convergence with the conventional banking principles of profitability, solvency and liquidity.

The study proposes a novel framework that describes how knowledge diffusion bridge-up the Sharīʿah and banking principles in terms of integration of banking principles by Sharīʿah scholars, integration of Sharīʿah principles by managers and the resultant, emergent principles for the governance of Islamic banking.

The proposed framework can inform professionals on how knowledge of banking practices and Sharīʿah can help them in governing Islamic banking. The Board of Directors may adopt a holistic approach for encouraging enhanced interactions between Sharīʿah scholars and managers. Such interaction may be increasing harmony, reducing conflicts and better coordination resulting in Sharīʿah-compliant and market wise viable products and services, thus increasing banking profitability.

This is the first study, which acknowledges and illustrates the role of the knowledge diffusion process in evolving governance principles for Islamic banks. This paper contributes to the theory of corporate governance by using the knowledge, aptitude and practice theory lens to examine conceptually how Islamic banking governance principles emerged through the knowledge diffusion process.