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This study underscores the critical importance of well-functioning sewer systems in achieving smart and sustainable urban drainage within cities. It specifically targets the pressing issue of sewer overflows (SO), widely recognized for their detrimental impact on the environment and public health. The primary purpose of this research is to bridge significant research gaps by investigating the root causes of SO incidents and comprehending their broader ecological consequences.

To fill research gaps, the study introduces the Multi-Phase Causal Inference Fuzzy-Based Framework (MCIF). MCIF integrates the fuzzy Delphi technique, fuzzy DEMATEL method, fuzzy TOPSIS technique and expert interviews. Drawing on expertise from developed countries, MCIF systematically identifies and prioritizes SO causes, explores causal interrelationships, prioritizes environmental impacts and compiles mitigation strategies.

The study's findings are multifaceted and substantially contribute to addressing SO challenges. Utilizing the MCIF, the research effectively identifies and prioritizes causal factors behind SO incidents, highlighting their relative significance. Additionally, it unravels intricate causal relationships among key factors such as blockages, flow velocity, infiltration and inflow, under-designed pipe diameter and pipe deformation, holes or collapse, providing a profound insight into the intricate web of influences leading to SO.

This study introduces originality by presenting the innovative MCIF tailored for SO mitigation. The combination of fuzzy techniques, expert input and holistic analysis enriches the existing knowledge. These findings pave the way for informed decision-making and proactive measures to achieve sustainable urban drainage systems.

This study aims to determine the efficiency of three types of essential oils (EOs) as antioxidants on wood pulp paper samples: camphor oil, clove oil and lavender oil. Because of the detrimental influence of the oxidation process on wood pulp paper, this type of paper suffers significant disintegration.

The evaluation methodology is based on scanning electron microscope and three directions laser microscope, the hydrogen ion concentration measurement, color change measurement using the CIELAB system and infrared spectrum analysis, as well as investigating the mechanical properties of paper as represented by tensile and elongation to determine Young’s modulus values.

According to the findings, camphor was an effective antioxidant for paper samples, protecting them from the damaging effects of oxidation and the impact of artificial aging processes while also improving the mechanical properties of paper.

This paper emphasizes the concept of using environmentally friendly materials derived from EOs, owing to their ease of application, lack of environmental impact, distinctive properties, low cost and distinctive properties in both curative and preventive conservation of paper manuscripts.

This paper aims to examine the impact of firm-specific characteristics on managers’ identity disclosure in the Gulf Cooperation Council (GCC) region.

Research data were collected from 2010 annual reports and financial statements of 403 listed firms in the GCC countries. The data were analyzed by multiple regression models.

Evidence suggesting that managers’ identity is significantly disclosed by firms that separate the office of chairman from that of chief executive officer was documented. It was also found that mature firms significantly disclose their managers’ identity. Our finding suggests that firms’ declaration that they comply with a set of corporate governance code leads them to disclose managers’ identity. However, we find that firms that are related to the state significantly disclose their managers’ identity, contrary to expectation.

One limitation is the lack of a uniform classification of industries by the stock exchanges in the GCC region. The implication of this is that researchers are lacking a uniform standard to apply in their research. Another limitation is the use of only 2010 annual reports and accounts; thus, there is a problem of inter-temporal generalizability. As markets in the GCC countries are evolving, it will be interesting to capture the state of managers’ identity disclosure after 2010.

The paper has the potential to influence firms in the GCC region to begin disclosing managers’ personal details and other contact information. In addition, there is the prospect that market regulators in the GCC region and other emerging markets who may read this research may now require firms to disclose their managers’ identity.

This is an Original research paper.

This study aims to evaluate the efficiency of using some polymers at different concentrations in the consolidation of vegetable-tanned leather artifacts.

New vegetable-tanned leather samples were prepared. The consolidants used were polyacrylamide (PAM) and polymethyl methacrylate/hydroxyethyl methacrylate (MMA-HEMA). Accelerated heat aging was applied to the untreated and treated samples. Analytical techniques used were Fourier transform infrared spectroscopy (FTIR), digital microscope, scanning electron microscope (SEM), change of color and mechanical properties.

The characteristic FTIR bands showed the effect of accelerated heat aging on the molecular structure of the studied samples, but treated and aged treated samples used were better than aged untreated samples. Microscopic investigations (digital and SEM), and mechanical properties proved that 2% was the best concentration for polymers used. The change in the total color difference of the treated and aged treated samples was limited.

This study presents the important results obtained from PAM and poly(MMA-HEMA) used for the consolidation of vegetable-tanned leather artifacts. The best results of the studied polymers can be applied directly to protect historical vegetable-tanned leathers.

This study aims to explore how the degree of chief executive officer (CEO) overconfidence influences the reporting of risk information. Likewise, it delves into how overconfident CEOs shape the usefulness of such risk disclosures, specifically in terms of their relationship with abnormal corporate stock returns.

It examined FTSE350 shares-firms from 2010 to 2018. The textual analysis using a bag-of-words approach with the Nudist 6 QSR software package codes the quantity and tone of risk reporting in the UK firms. The study used a metric based on the firm's capital expenditure rate relative to its industry median in the same year to assess the degree of firm’s CEO overconfidence. The abnormal return of stock reflects the investors' reaction to the quantity and tone of risk disclosure.

UK firms differ considerably in their willingness to share risk information with investors, with a slight tendency toward pessimism in risk reporting. Likewise, firms with high (low) overconfident CEOs disseminate higher (lower) levels of risk reporting. Also, overconfident CEOs provide more positive than negative risk news. Besides, the quantity risk reporting does not impact the abnormal stock return of the corporation. However, the positive risk news has a higher (lower) impact on enhancing the stock return in firms with low (high) overconfident CEOs. Finally, negative risk news tends to have an inverse consequence on the company's stock returns. However, this effect is more pronounced for companies led by highly overconfident CEOs compared to those with less overconfident CEOs.

Stakeholders should be aware that risk reports of firms with overconfident CEOs may exhibit a potential bias toward positive news. Likewise, boards of directors and governance mechanisms should be mindful of the consequences of CEO overconfidence in risk reporting and ensure that risk disclosures accurately reflect the true risk profile of the company.

To the best of the authors’ knowledge, this is the first study to delve into the consequences of CEOs' overconfidence in terms of risk disclosure in the UK. It goes beyond investigating the level or quantity of risk disclosure and also considers the tone of risk reporting, i.e. the messages communicated through the reporting. Likewise, it explores how CEO overconfidence can affect the value-relevance of risk disclosure, shedding light on the role of CEO characteristics in shaping investor perceptions and decision-making.

Corporate managers spend on research and development (R&D) for reasons of growth and survival. However, they may be less willing to invest in R&D because of its long-term horizon, high failure rate and uncertain outcomes. This study aims to explore the extent to which managerial ownership influences R&D expenditure decisions.

Apart from the linear regression models, this study uses a semi-parametric quantile regression analysis for a sample of German non-financial firms throughout 2009–2018.

This study finds a nonmonotonic sensitivity of R&D spending to the level of managerial ownership over various quantiles of R&D distribution. That is, managerial ownership increases the expenditure on R&D at low R&D intensity firms. However, it decreases the expenditure on R&D at high R&D intensity firms. These results suggest the presence of a maximum level of R&D expenditure, after which owner-managers would be unwilling to spend on R&D.

The results confirm the importance of corporate ownership structure for firm R&D and innovation activities. It provides an implication for corporate policymakers to reform the corporate ownership structures to encourage corporate managers and owners to invest in R&D projects.

This study offers two distinct contributions study. First, it provides the first German shred of evidence on the nonlinear relationship between managerial ownership and R&D expenditure decisions by distinguishing between high and low R&D intensity firms. Second, unlike prior research, it uses a semi-parametric quantile regression analysis. This method is more efficient than least-squares estimators and produces robust estimators to heteroscedasticity of the residuals.

This study aims to analyze the effect of the board of directors on financial performance, either directly or indirectly, through the existence of risk management after the issuance of the Palestinian Code on Corporate Governance in Palestine.

This study uses a panel data of 31 Palestinian listed companies from 2010 to 2016. It also uses structural equation modeling (SEM) model.

The results of the SEM model show a significant positive relationship of the existence of risk management and the tenure-chief executive officer (CEO) with financial performance. However, CEO duality has a significant negative relationship with financial performance. The results also show a significant positive relationship of CEO duality and board size with financial performance through the existence of risk management.

This study adds to the existing literature by analyzing the effect of the board of directors on financial performance, either directly or indirectly, through the existence of risk management in Palestine, one of the youngest stock exchanges in the region, which assists in testing the validity of agency theory in a young and small emerging Islamic market context.

The results of this paper are significant for shareholders and managers of companies to make proper choices to secure the interests of stakeholders and increase the flow of capital and foreign investment.

To the best of the author’s knowledge, it is one of the first papers to investigate the effect of the board of directors on financial performance, either directly or indirectly, through the existence of risk management in Palestine.

Kuwait has taken significant steps to reform its corporate governance (CG) by introducing the New Company Law (NCL) in 2013. This study investigates how this reform of CG mechanisms affects the disclosure of future-oriented information. Likewise, it explores how CG mechanisms affect the informativeness of this disclosure.

The sample comprises the nonfinancial firms listed on the Boursa Kuwait from 2014 to 2018. The study uses an automated textual analysis to measure the level of future-oriented disclosure in the annual reports of these firms. The informativeness of disclosure is proxied by firm value at three months of the date of the annual report.

The study finds that Kuwaiti firms with larger board sizes and substantial ownership by institutional investors are less likely to disseminate future-oriented information. Conversely, firms with more independent directors and larger audit committees are more inclined to provide future-oriented disclosure. Furthermore, the disclosure of future-oriented information carries contents that enhance investors' valuations of Kuwaiti firms, especially in firms with fewer institutional ownership and more prominent audit committees.

It focuses on management decisions to disclose information in the annual reports. Examining other channels of disseminating information, such as social media disclosure, provides avenues for future research.

Policy setters in Kuwait should consider the importance of some CG mechanisms to improve the transparency of Kuwaiti firms, as suggested by the NCL. Likewise, investors should rely on such specific CG mechanisms to build their prospects about the firm's value.

Apart from developed countries, the current study is the first evidence on how CG mechanisms could affect the informativeness of future-oriented disclosure in a developing economy. It is also the first to investigate the new CG mechanism introduced by Kuwait NCL in 2013.

This study aims to investigate the effect of the board of directors on financial performance, either directly or indirectly through the existence of risk management after the issuance of the Palestinian Code on Corporate Governance (PCCG) in Palestine.

This study presents an empirical investigation of 31 nonfinancial Palestinian-listed companies from 2010 to 2016. This study utilizes the structural equation modeling (SEM) model.

The results of the SEM model find that there is a significant positive effect of the existence of risk management and the tenure-Chief Executive Officer (CEO) on financial performance. However, CEO duality has a significant negative effect on financial performance. The results also find that the effect of CEO duality and board size are significantly positive on financial performance through the existence of risk management.

This study adds to the existing literature by investigating the effect of the board of directors on financial performance, either directly or indirectly through the existence of risk management in Palestine as one of the youngest stock exchanges in the region that assists in testing the validity of agency theory in a young and small emerging Islamic market context.

The results of this paper are significant to shareholders and managers of companies to make proper choices in order to secure the interests of stakeholders and increase the flow of capital and foreign investment.

To the best of the authors’ knowledge, it is one of the first papers to investigate the effect of the board of directors and financial performance, either directly or indirectly through the existence of risk management in Palestine.

This study aims to examine the role of the board of directors in affecting earnings management practices across small- and medium-sized enterprises (SMEs) life cycle.

Data is collected from 280 SMEs listed on the London Stock Exchange during the period of 2009–2016. Fixed effects regression analysis is used to test the hypotheses.

This study shows that the impact of the board of directors' roles on earnings management practices varies depending on the SMEs life cycle stage. In the introduction, growth and decline stages of SMEs, the wealth creation role of the board is negatively significant with earnings management, while the wealth protection role of the board is positively significant in the growth and maturity phases. Results suggest that the board's responsibility to create wealth deters early-stage earnings management strategies, while protecting shareholder interests, in latter stages, leads to a decrease in earnings management.

The findings suggest that corporate governance should be customized to the specific stage of the SMEs life cycle. Additionally, different life cycle stages may impose different requirements on corporate boards to shape the effectiveness of these mechanisms and constrain earnings management practices.

To the best of the authors’ knowledge, this study offers one of the first insights on the UK SMEs to understand how board functions and earnings management practices vary over SMEs life cycles. It will offer important information on the effect of board features on earnings management in SMEs in the UK and is anticipated to be of importance to policymakers, regulators, investors and practitioners.