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This study aims to investigate how the presence of female CEOs (FCEOs) affects investment efficiency in emerging economy, where female participation in business activities is limited.

This paper investigates the impact of CEO gender on investment efficiency by using investment efficiency measures proposed by Biddle et al. (2009), Chen et al. (2011) and Chen et al. (2013).

The findings suggest that FCEOs are associated with high level of investment efficiency. FCEOs improve corporate governance, streamline management and reduce inefficient investment decisions. In addition, FCEOs focus more on curbing underinvestment than overinvestment when making investment decisions. Furthermore, high financial reporting quality (FRQ) strengthens the effect of FCEOs on investment efficiency. The results suggest that FCEOs do not ameliorate the investment efficiency of state-owned enterprises.

This study enhances our understanding of the effects of FCEOs on corporate investment decisions in a male-dominated society. Efficient use of resources is vital from corporate and societal perspectives. Emerging economies are characterized by the unstable political and economic environment and low participation of females in decision-making. Hence, these economies require efficient utilization of resources. This study also sheds light on the role of FCEOs in curtailing underinvestment in emerging economies. It proves that FRQ is important in emerging economies because it strengthens the governance role of FCEOs.

The purpose of this study is to investigate the relationship between board diversity measured as relation-oriented, task-oriented and board overall diversity and firm’s investment efficiency.

This study estimates four dimensions of board diversity, including age, gender, tenure and education. The four dimensions are further categorized in relation-oriented diversity (i.e. age and gender), task-oriented diversity (i.e. tenure and education) and overall board diversity (relation and task oriented). Panel data analysis is used to examine the board diversity–investment efficiency relationship in Chinese listed firms during the years 2003–2018. The findings of the study are robust to a battery of econometric techniques.

This study finds relation-oriented, task-oriented and overall diversity of a board curb investment inefficiency by discouraging sub-optimal investment (over- or under-investment). In other words, board diversity improves firms’ investment efficiency.

The results suggest that board diversity plays a significant role in corporate decisions. The findings illustrate that board diversity disciplines the management, reduces agency conflicts and thereby improves corporate governance, resulting in higher investment efficiency.

This study has two important contributions. First, this study extends the prior literature of investment efficiency by considering socio-psychological dimension of the board diversity by constructing relation- and task-oriented diversity. Second, contrary to earlier studies on board diversity, this study takes four facets of board diversity, i.e. age, gender, education and tenure that improve corporate governance mechanism.

The purpose of this paper is to explore the types of Shariah capabilities of Islamic banks, which provide bases for the types of Shariah value propositions, offered by the relationship managers in their front-line service experiences with the customers.

A resource-based view of Shariah capabilities and a service-dominant logic view of value propositions are adopted. Fifteen relationship managers from multiple Islamic banks in Pakistan are interviewed to find a typology of Shariah capabilities and a resultant typology of value propositions for Islamic banks.

The findings suggest that Islamic banks claim to possess five types of Shariah capabilities, namely, Shariah governance capability (SGC), Shariah compliance capability (SCC), Shariah monitoring capability (SMC), Shariah structuring (product) capability (SSC) and Shariah learning capability (SLC). These capabilities lead to four types of values propositions, namely, Shariah identity value (SIV), Riba-free value (RFV), Shariah disclosure value (SDV) and Tangibility value (TV) of the real assets in transactions.

The study has relied on the front-line experiences of relationship managers who are connected to the Islamic banks’ capabilities inside the banks and the value propositions that they offer to show relationships with customers in front-line service experiences. Other stakeholders may have different perspectives on both capabilities and value propositions.

This paper contributes to Islamic finance theory by theoretically and empirically showing two typologies for the Islamic banks' capabilities and value propositions, respectively.

The presence of heavy metals in milk causes many acute and chronic physiological dysfunctions in human organs. The present study aims to investigate the heavy metals in cow's and buffalo's milk of two major cities, Karachi and Gujranwala, Pakistan to estimate metal intake by humans from this source.

In total, 48 milk samples from 2 cities were drawn from animals' udder to avoid contamination. Each sample was digested with nitric acid at 105 ^oC (degree Celsius) on a pre-heated electric hot plate to investigate the metals by atomic absorption spectroscopy (flame type). Air-acetylene technique analyzed chromium, cadmium and lead, and the hydride method analyzed arsenic in the milk samples.

The results revealed the highest mean lead concentration (19.65 ± 43.86 ppb) in the milk samples, followed by chromium (2.10 ± 2.33 ppb) and arsenic (0.48 ± 0.73 ppb). Cadmium was not detected in any sample, assuming cadmium's occurrence was below the detection level. The concentrations of all the metals in the samples of the two cities do not differ statistically. Lead concentrations in the buffalo's milk were higher than in cow's milk (p < 0.05). However, the concentrations of arsenic and chromium between buffalo's and cow's milk do not differ statistically. The present study reveals a lower level of metals in the milk than those conducted elsewhere. The mean concentrations of all the metals met the World Health Organization's (WHO) safety guidelines (1993).

Although cadmium causes toxicity in the human body, cadmium could not be measured because cadmium's concentration was below the detection level, which is 1 ppb.

This study will help reduce the toxic metals in our environment, and the sources of heavy metals, particularly from the industrial sector could be identified. The feed and water consumed by the milking animals could be carefully used for feeding them.

This study will help reduce the diseases and malfunction of human organs and organ systems since these heavy metals cause toxicity and carcinogenicity in humans. Arsenic and chromium cause cancer while lead causes encephalopathy (a brain disease).

The study reports heavy metal concentrations in the two attributes of four independent variables of raw milk samples that were scarcely reported from Pakistan.

This study aims to spotlight and explore various determinants of Islamic social reporting (ISR) in Islamic banks of Pakistan.

The authors have used firm size, firm profitability, firm age, board size and board independence as determinants of ISR. The authors collected data from Islamic banks listed on Pakistan Stock Exchange for the period 2012–2019. Multiple estimation techniques, i.e. fixed effect model, random effect model and one-step difference generalized method of moment (GMM), have been applied.

Random effect model was found to be more robust as compared to fixed effect model and one-step difference GMM. The results reported by the random effect model, preferred among the three, show that firm size, firm profitability, firm age and board size are important determinants of ISR in Islamic banks of Pakistan, while board independence does not determine social reporting for Islamic banks in Pakistan. Although social reporting in annual reports of Islamic banks in Pakistan is increasing, further improvement and compliance is required to ensure accountability and transparency in financial reporting as recommended by Islamic teachings. The study has certain managerial implications, especially for top management of Islamic banks.

To the best of the authors’ knowledge, this study is the first to discuss determinants of ISR in Islamic banks of Pakistan. The developed framework herein provides a precise guideline for Islamic banking to enhance their performance, which has never been discussed before.

The purpose of the current flow configurations is to bring to attention the thermophysical aspects of magnetohydrodynamics (MHD) Williamson nanofluid flow under the effects of Joule heating, nonlinear thermal radiation, variable thermal coefficient and activation energy past a rotating stretchable surface.

A mathematical model is examined to study the heat and mass transport analysis of steady MHD Williamson fluid flow past a rotating stretchable surface. Impact of activation energy with newly introduced variable diffusion coefficient at the mass equation is considered. The transport phenomenon is modeled by using highly nonlinear PDEs which are then reduced into dimensionless form by using similarity transformation. The resulting equations are then solved with the aid of fifth-order Fehlberg method.

The rotating fluid, heat and mass transport effects are analyzed for different values of parameters on velocity, energy and diffusion distributions. Parameters like the rotation parameter, Hartmann number and Weissenberg number control the flow field. In addition, the solar radiation, Joule heating, Prandtl number, thermal conductivity, concentration diffusion coefficient and activation energy control the temperature and concentration profiles inside the stretching surface. It can be analyzed that for higher values of thermal conductivity, Eckret number and solar radiation parameter the temperature profile increases, whereas opposite behavior is noticed for Prandtl number. Moreover, for increasing values of temperature difference parameter and thermal diffusion coefficient, the concentration profile shows reducing behavior.

This paper is useful for researchers working in mathematical and theoretical physics. Moreover, numerical results are very useful in industry and daily-use processes.

Universities across the globe are spending an increasing amount of their budgets to offer web-based services to cater information need especially off-campus students. However, the success of web-based services depends on how well the target users are satisfied with the use of the web services. The purpose of this paper is to assess students’ satisfaction with the use of the Allama Iqbal Open University (AIOU) web-based services.

Pilot tested questionnaire-based survey was administered to collect data from a sample of 388; selected through systematic sampling technique from the study’s population consisted of master level students belonged to 11 different academic departments of the Faculty of Social Science and Humanities at the AIOU from all over Pakistan.

Based on 318 useful questionnaires, response rate 82 percent, the results show that majority of the students were satisfied with the use of at the AIOU web-based services except for online mailing books tracking system, library web OPAC and web radio service. However, t-test analysis shows that no difference was found in the opinion of male and female respondents in terms of their satisfaction with the use of the web services. ANOVA results indicate that there was no significant difference depicted in satisfaction with the use of the web services among the respondents enrolled in different disciplines of the faculty. Similarly, no significant difference was found among different age groups. Moreover, the respondents belonging to all five provinces; Punjab, Khyber Pakhtunkhwa, Sindh, Baluchistan, Gilgit Baltistan, and Federal Capital territory showed the same level of satisfaction with the use of the services. The results of regression analysis (R²=0.226) denote that both perceived usefulness and perceived ease of use significantly predicted, 22.6 percent, in students’ satisfaction with the use the web services.

The study provides valuable recommendations which may be helpful for web administration of the university to improve AIOU web-based services.

To the best knowledge, this is the first study conducted to investigate the satisfaction with the use of the university web-based services in distance education’s perspective of Pakistan.

Motion capture system (MoCap) has been used in measuring the human body segments in several applications including film special effects, health care, outer-space and under-water navigation systems, sea-water exploration pursuits, human machine interaction and learning software to help teachers of sign language. The purpose of this paper is to help the researchers to select specific MoCap system for various applications and the development of new algorithms related to upper limb motion.

This paper provides an overview of different sensors used in MoCap and techniques used for estimating human upper limb motion.

The existing MoCaps suffer from several issues depending on the type of MoCap used. These issues include drifting and placement of Inertial sensors, occlusion and jitters in Kinect, noise in electromyography signals and the requirement of a well-structured, calibrated environment and time-consuming task of placing markers in multiple camera systems.

This paper outlines the issues and challenges in MoCaps for measuring human upper limb motion and provides an overview on the techniques to overcome these issues and challenges.

The delivery of information services in higher education is increasingly relying on Web-based systems. The low adoption and underutilization of information systems have been major problems for developing countries such as Pakistan in terms of realizing their full benefits. This study aims to investigate factors affecting student use of Allama Iqbal Open University’s (AIOU) Web-based services by using the Unified Theory of Acceptance and Use of Technology (UTAUT) from the perspective of Pakistani distance education.

This study has adopted quantitative research design with the UTAUT model as a theoretical framework. A self-completion structured questionnaire-based survey has been administered to 388 master’s level students, selected through systematic sampling from the target population. The response rate was 82 per cent (318). All statistical tests have been performed using IBM SPSS (version 20.0) and Process macro for SPSS.

Findings of the model’s hypotheses reveal that performance expectancy, effort expectancy and social influence are significant predictors of student behavioural intention to use AIOU Web-based services, whereas actual student use is dependent on facilitating conditions and student behavioural intention to use. The impact of moderating variables with respect to age, gender and experience did not influence the actual use of the Web services. However, the research model significantly measured (62.1 per cent) the actual use of AIOU Web-based services by the students.

This study is delimited to the UTAUT model to investigate the phenomena. Besides this, the context of the study is the voluntary instead of mandatory usage of Web services. A study conducted in mandatory settings, in which students are bound to use Web services, may have different results.

This is the first attempt to apply the UTAUT model to investigate the factors affecting student use of Web-based services from the perspective of distance education and the findings prove strong support for the model.

The purpose of current flow configuration is to spotlights the thermophysical aspects of magnetohydrodynamics (MHD) viscoinelastic fluid flow over a stretching surface.

The fluid momentum problem is mathematically formulated by using the Prandtl–Eyring constitutive law. Also, the non-Fourier heat flux model is considered to disclose the heat transfer characteristics. The governing problem contains the nonlinear partial differential equations with appropriate boundary conditions. To facilitate the computation process, the governing problem is transmuted into dimensionless form via appropriate group of scaling transforms. The numerical technique shooting method is used to solve dimensionless boundary value problem.

The expressions for dimensionless velocity and temperature are found and investigated under different parametric conditions. The important features of fluid flow near the wall, i.e. wall friction factor and wall heat flux, are deliberated by altering the pertinent parameters. The impacts of governing parameters are highlighted in graphical as well as tabular manner against focused physical quantities (velocity, temperature, wall friction factor and wall heat flux). A comparison is presented to justify the computed results, it can be noticed that present results have quite resemblance with previous literature which led to confidence on the present computations.

The computed results are quite useful for researchers working in theoretical physics. Additionally, computed results are very useful in industry and daily-use processes.