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The purpose of this study is to investigate the most important factors that affect the capital structure of commercial banks in the Kingdom of Saudi Arabia.

This study uses annual data of 11 Saudi commercial, national banks listed on the tadawul Saudi stock exchange for the period 2010–2017. Data was collected from the banks financial statements, tadawul annual publications and Saudi Arabian Monetary Authority. By constructing a balanced panel, this study uses pooled ordinary least squares regression along with fixed effects and random effects to examine the relationship between the bank’s book leverage as the dependent variable and bank-specific explanatory variables that include profitability, tangibility, earnings volatility, growth opportunities and bank size, while controlling for macroeconomic conditions.

The findings of this study suggest that banks in Saudi Arabia are highly leveraged, endorsing the fact that the nature of banks’ business is different from non-banking firms. Earnings volatility, growth and bank size show positive and significant relations with book leverage. Profitability and tangibility are negatively related to the book leverage. Empirically, the explanatory variables profitability, earnings volatility, tangibility, growth and bank size have material effects on the capital structure decisions of Saudi commercial banks. In summary, the determinants of capital structure for Saudi banks are the same as those of non-financial firms but are distinctive in nature.

An extensive study on all the banks operating in Gulf Cooperation Council (GCC) countries is suggested.

The findings have practical implications for bank managers, which will help them to identify the bank-specific factors affecting the capital structure and choose the values enhancing optimal capital structure. The results of this study can assist regulatory agencies to formulate an effective regulatory framework. Moreover, the findings lay a foundation for the development of financial sector under the umbrella of the Vision 2030 program in the Kingdom.

To the best of the authors’ knowledge, this is the first study to explore the factors affecting the capital structure choices of commercial banks operating in the Kingdom of Saudi Arabia. Moreover, the findings of the study would prove useful in detailed studies of capital structure in the GCC countries as well.

The purpose of this paper is to investigate how conventional and Islamic commercial banks in Pakistan choose their capital structure and what are the most significant factors that affect their choice of capital structure.

The authors collected the data from the annual reports of commercial banks listed on Karachi Stock Exchange Pakistan during 2004-2014. Panel data techniques, namely, pooled ordinary least squares, fixed effects and random effects, were used to estimate the relationship between book leverage and bank-specific variables such as profitability, size, growth, tangibility and earnings volatility.

Descriptive statistics indicate that conventional commercial banks are more levered than Islamic commercial banks. Moreover, conventional commercial banks are larger, profitable and have relatively safe earnings than Islamic commercial banks. In contrast, Islamic commercial banks have relatively more fixed operating assets and growth in total assets compared to the conventional commercial banks. Regression results indicate that profitability, growth and tangibility are negatively, whereas bank size and earnings volatility are positively, related to book leverage of conventional commercial banks. On the other hand, only three variables, namely, profitability, bank size and tangibility, have material effects on capital structure choice of Islamic commercial banks. Profitability and tangibility are negatively while bank size is positively related to book leverage of the Islamic banks. In sum, results of the study indicate that Islamic and conventional commercial banks have their own way to choose the capital structure than the non-financial firms; however, their choice is affected by the similar variables as identified for non-financial firms in Pakistan.

Results of this study provide support to bank managers to understand the effects of bank-specific variables on capital structure and make them able to determine a balanced capital structure considering the regulations framed by the central bank of the country.

This is the first study that investigates the factors that affect the capital structure of conventional and Islamic commercial banks in Pakistan. Moreover, findings of this study lay some foundation upon which a more detail analysis of capital structure of banks could be based.

The purpose of this study is to investigate the mechanical and tribological properties of the synthetic diamond coatings deposited on WC-Co cutting tools for their prospective applications in mechanical industry. In this work, the concept of nanocrystalline diamond, microcrystalline diamond and multilayer-diamond coating systems were proposed and deposited on WC-Co substrates with the top-layer nanocrystallinity, optimum thickness and interfacial adhesion strength for load-bearing tribological and machining applications. Also, the overall mechanical and tribological properties of all synthetic diamond coatings were compared for the purpose of selecting a suitable type of protective layer used on the surfaces of WC-Co cutting tools or mechanical dies.

Smooth and adhesive single layered and multilayered synthetic deposited on chemically etched cemented tungsten carbide (WC-Co) substrates using predetermined process parameters in hot filament chemical vapor deposition (HFCVD) method. A comparison has been documented between diamond coatings having different nature and architecture for the purpose of studying their mechanical and tribological characteristics. The friction characteristics were studied experimentally using ball-on-disc type linear reciprocating micro-tribometer under the influence of varying load conditions and within dry sliding conditions. Nanoindentation tests were conducted on each diamond coating using Berkovich nanoindenter for the measurement of their hardness and elastic modulus values. Also, the wear characteristics of all sliding bodies were studied under varying load conditions using cumulative weight loss and density method.

Depositing any type of diamond coating on the cemented carbide tool insert increases its all mechanical and tribological characteristics. When using boron-doping onto the top-layer surface of diamond coatings decrease slightly their mechanical properties but increases the tribological characteristics. Present analysis reveals that friction coefficient of all diamond-coated WC-Co substrates decreases with the increase of normal load. Therefore, maintaining an appropriate level of normal load, sliding time, sliding distance, atmospheric conditions and type of diamond coating, the friction coefficient may be kept to some lower value to improve mechanical processes.

As the single layered synthetic diamond coatings have not given the full requirements of mechanical and tribological properties when deposited on cutting tools. Therefore, the multilayered diamond coatings were proposed and developed to enhance the interfacial integrity of the nanocrystalline and microcrystalline layers (by eliminating the sharp interface) as well as increasing the hardness of tungsten carbide substrate. However, when using boron doping onto the top-layer surface of diamond, coatings decreases slightly their mechanical characteristics but also decreases the value of friction coefficient.

The purpose of this paper is to identify firms in the UK adopting a policy of high cash and low leverage and investigate how executive ownership contributes to this decision.

Firms following this policy are identified both by using a fixed classification approach and the analysis of the distribution of cash and leverage. Logit analysis is then used to estimate the probability of adopting the policy as a function of executive ownership.

Extreme financial policies are suboptimal as firms adopting these policies tend to undershoot (overshoot) their target leverage (cash holdings) ratios. The impact of the executive ownership on the probability of adopting this policy is U-shaped, in line with the alignment–entrenchment hypothesis.

Despite the substantial presence of non-executive directors in the boards and a significant amount of shareholdings by executive directors, the firms under analysis have adopted suboptimal financial policies possibly because poorly governed or because executive ownership is the range where entrenchment is feasible.

This is the first attempt at recognising policies of high cash and low leverage as being explicitly interdependent. It is also the first study focussing on the UK, a country of interest, because ownership structure is relatively dispersed. Moreover, instead of choosing fixed threshold levels of the variable in defining the extreme financial policy, this paper proposes the analysis of the distribution of cash holdings and leverage and accounts for target levels of cash and leverage.

The purpose of this paper is to investigate the impact of firm-specific (i.e. firm size, profitability, leverage, dividend, growth opportunities, management quality and firm age) and country-specific (i.e., gross domestic product [GDP] growth) variables on compensation/remuneration offered to chief executive officers (CEOs) working in different industries of Pakistan.

Panel data techniques, namely, pooled ordinary least squares, fixed effects and random effects methods are used to estimate the results. Moreover, Hausman test is used to choose which estimation method, either fixed effects or random effects, is better to explain the results.

Firm size, profitability, leverage, growth opportunities and age are some important firm-specific factors that have mixed (i.e. positive/negative) impact on CEO compensation in different industries. Variations in results are due to industry dynamics. However, it is important to mention that three key variables, namely, dividend, management quality and GDP growth have shown consistent positive impact on CEO compensation in most of the industries. In sum, results show that firm-specific and country-specific variables have material effects on CEO compensation. Moreover, results are found consistent with the predictions of agency theory and human capital theory.

The authors are sure that findings of this study provide some support to the board of directors to determine the pay slice for CEOs. Moreover, findings provide support to the regulatory authorities in formulating mechanisms to determine the compensation package for CEOs working in different industries and to improve the Code of Corporate Governance.

To the best of the authors’ knowledge, no empirical study in Pakistan has yet estimated the effects of firm-specific and country-specific variables on compensation offered to CEOs working in different industries. Thus, industry-wise analysis provides some new insights to the decision-makers and lays some foundation upon which a more detail analysis could be based.

The purpose of this study is to explore how governance mechanisms (internal and external) enhance the performance of the return on asset (ROA), return on equity (ROE), earning per share (EPS) and dividend payout ratios (DP) of the banks of Pakistan. The study incorporates not only the internal factors of governance (board size, out-ratio, annual general meeting, managerial ownership, institutional ownership, block holder stock ownership and financial transparency) but also the external factors (legal infrastructure and protection of minority shareholders, and the market for corporate control).

The sample size of the study consists of 30 banks (public, private and specialized) listed at the Pakistan Stock Exchange (PSE) for the period 2008-2014. The panel data techniques (fixed or random effect model) have been used for the empirical analysis after verification by Hausman (1978) test.

The results revealed that not only do the internal mechanisms of governance enhance the performance of the banking sector of Pakistan but external governance also plays a substantial role in enriching the performance. The findings conclude that for a good governance structure, both internal and external mechanisms are equally important, to accelerate the performance of the banking sector.

Internal and external mechanisms of corporate governance can also be checked by adding some more variables (ownership i.e. foreign, female and family as internal and auditor as external), but they are not added in this work due to data unavailability.

The study contributes to the literature and could be useful for the policy makers who need to force banks to mandate codes of governance through which they can create an efficient board structure and augment the performance. The investments from different forms of ownership can be accelerated if they follow the codes properly.

The study facilitates the bankers in incorporating sound codes of corporate governance to enhance the performance of the banks.

This work is unique as no one has explored the impact of external mechanism of governance on the performance of the banking sector of Pakistan.

This study serves two objectives; first, it examined the impact of ownership structure and board characteristics on firm value; second, the moderating effects of board gender diversity (women appearance on board) and board ethnic diversity (Chinese, Indian, and Foreign ethnicities) have been examined on the relationship between ownership structure, board characteristics, and firm value.

The dynamic model, system generalized method of moments (S-GMM hereafter), is employed to control potential dynamic endogeneity, reverse causality, simultaneity and unobserved heterogeneity persistent in corporate governance-performance relationships during 2006–2017 of 483 Malaysian listed companies.

Findings pertaining to objective one reveal that there is a weak linkage between ownership structure and firm value, whereas board characteristics significantly affect firm performance based on resource dependence theory. While considering the results of objective two, there is mixed evidence of moderating impact of board gender and ethnic diversity on ownership structure, board characteristics and performance nexus.

The findings of the study are practically significant for regulatory bodies, namely, Bursa Malaysia, Securities Commission (SC) Malaysia, and policymakers to develop guidelines for ownership structure variables. Moreover, Malaysian firms need to disperse their concentrated ownership structure for enhanced firm value. In addition, board characteristics significantly affect firm performance in Malaysian listed companies.

The paper contributes to multiple aspects: first, it examined the impact of ownership structure and board characteristics on firm performance. Second, the moderating effect of board gender and board ethnic diversity contributes to research significant and valuable for the researchers and practitioners. Finally, the study employed S-GMM, controlling for dynamic endogeneity considered a main econometric problem for CG-performance relationships.

The purpose of this study is twofold. First, to investigate whether internal attributes of corporate governance such as board size, board composition, CEO duality, board meetings, blockholders' ownership, managerial ownership, CEO remuneration, and directors' remuneration affect the capital structure (i.e., total debt ratio, long-term debt ratio, and short-term debt ratio) choice of non-financial firms listed on Pakistan Stock Exchange Limited during 2009–2014. Second, whether theories relevant to corporate governance developed in western settings provide support to understand the financing behavior of firms in a developing country, Pakistan. In sum, results indicate that corporate governance measures have some role in shaping the financing behavior of firms. It is worth mention that each company is bound to explicitly confirm in annual report regarding compliance with code of corporate governance, but results indicate a different story. For instance, descriptive statistics indicate that five individual larger shareholders on average hold more than 68% shares.

The purpose of this study is to investigate whether capital structure affects accruals and real earnings management (AEM and REM) of nonfinancial firms listed on Pakistan Stock Exchange (PSX). Moreover, to investigate whether institutional development (ID) moderates the relation between capital structure and earnings management (EM).

Data were taken from annual reports of nonfinancial firms listed on the PSX during 2012–2019. Data of 150 firms for a period of eight years were found completed with respect to the variables used in this study. The generalized moments of methods estimator is used to estimate the effects of explanatory variables on earning management. Furthermore, fixed and random effects methods were used to estimate the impact of capital structure on AEM and REM.

Results show that all three measures of capital structure (i.e. total debt ratio, long-term debt ratio and short-term debt ratios) are inversely related to AEM. In contrast, all measures of capital structure are positively related to abnormal cash flow from operations. Total debt ratio and long-term debt ratio are negatively while short-term debt ratio is positively related to abnormal discretionary expenses. Total debt ratio and short-term debt ratio are significant and negatively related to abnormal production cost. Additionally, interaction terms of ID (i.e. rule of law and regulatory quality) significantly moderate the controlling role of debt on discretionary accruals. In sum, results show that the use of debt induces lender's monitoring. Consequently, managers move toward REM because of lower probability of being exposed.

Findings of this study have significant implications for managers and regulatory authorities. For instance, the use of debt increases the lender’s influence which restricts the managers to be involved in EM practices. Moreover, regulatory authorities are required to address the loopholes in regulations to refrain the managers to be engaged in EM.

To the best of the authors’ knowledge, this is the first study in Pakistan that has explored the impact of capital structure on AEM and REM. More importantly, a careful review of the literature affirms that this study is among the few studies that have used ID as a moderating variable to explain the relation between capital structure and EM.

The purpose of this paper is to examine the combined effects of thermal radiation and magnetic field of molybdenum disulfide nanofluid in a channel with changing walls. Water is considered as a Newtonian fluid and treated as a base fluid and MoS₂ as nanoparticles with different shapes (spherical, cylindrical and laminar). The main structures of partial differential equations are taken in the form of continuity, momentum and energy equations.

The governing partial differential equations are converted into a set of nonlinear ordinary differential equations by applying a suitable similarity transformation and then solved numerically via a three-stage Lobatto III-A formula.

All obtained unknown functions are discussed in detail after plotting the numerical results against different arising physical parameters. The validations of numerical results have been taken into account with other works reported in literature and are found to be in an excellent agreement. The study reveals that the Nusselt number increases by increasing the solid volume fraction for different shapes of nanoparticles, and an increase in the values of wall expansion ratio α increases the velocity profile f′(η) from lower wall to the center of the channel and decreases afterwards.

In this paper, a numerical method was utilized to investigate the influence of molybdenum disulfide (MoS₂) nanoparticles shapes on MHD flow of nanofluid in a channel. The validity of the literature review cited above ensures that the current study has never been reported before and it is quite new; therefore, in case of validity of the results, a three-stage Lobattoo III-A formula is implemented in Matlab 15 by built in routine “bvp4c,” and it is found to be in an excellent agreement with the literature published before.