Search results

This investigation has been carried out for thermal-diffusion (Dufour) and diffusion-thermo (Soret) effects on the boundary layer flow of Jeffrey fluid in the region of stagnation-point towards a stretching sheet. Heat transfer occurring during the melting process due to a stretching sheet is considered. The paper aims to discuss these issues.

The authors convert governing partial differential equations into ordinary differential equations by using suitable transformations. Analytic solutions of velocity and temperature are found by using homotopy analysis method (HAM). Further graphs are displayed to study the salient features of embedding parameters. Expressions of skin friction coefficient, local Nusselt number and local Sherwood number have also been derived and examined.

It is found that velocity and the boundary layer thickness are increasing functions of viscoelastic parameter (Deborah number). An increase in the melting process enhances the fluid velocity. An opposite effect of melting heat process is noticed on velocity and skin friction.

The boundary layer flow in non-Newtonian fluids is very important in many applications including polymer and food processing, transpiration cooling, drag reduction, thermal oil recovery and ice and magma flows. Further, the thermal diffusion effect is employed for isotope separation and in mixtures between gases with very light and medium molecular weight.

Very scarce literature is available on thermal-diffusion (Dufour) and diffusion-thermo (Soret) effects on the boundary layer flow of Jeffrey fluid in the region of stagnation-point towards a stretching sheet with melting heat transfer. Series solution is developed using HAM. Further, the authors compare the present results with the existing in literature and found excellent agreement.

All over the world, Bangladesh is well known as a flood- and cyclone-affected country. But in the recent years the slow onset disaster of drought is more frequent in Bangladesh due to climatic as well as nonclimatic variability. As a consequence, agriculture along with its dependent farmers’ livelihoods tremendously experience its adverse impacts. Therefore, the main focus of this chapter is to discuss about drought, its effects on different sectors, and how in different levels a number of drought risk management actions are carried out to cope with this insidious disaster in the context of Bangladesh.

Being grounded in interdependence theory, this study aims to address the following research question: Do managers’ negotiation styles (collaborative versus competitive) make employees’ relational justice-emotional experiences links sporadic?

Data elicited from N = 139 Pakistani undergraduate students participating in an online scenario-based experiment were used to employ repeated measures analysis and partial least square structural equation modeling techniques.

Results suggest that employees’ relational justice is likely to be higher when managers use a collaborative negotiation style than when they use competitive style in performance review meetings. Moreover, per managers’ different negotiation styles, employees’ relational justice perceptions may predict their positive emotions differently. That is, when managers use collaborative negotiation style, employees’ relational justice perceptions may positively predict their hope but not optimism, whereas when managers use competitive negotiation style, employees’ relational justice perceptions may positively predict their optimism but not hope. Furthermore, the positive relationship between employees’ relational justice and their optimism is stronger when their trust in manager is low than when it is high.

The study is of value for performance management theorists who aim to address the issue of ineffectiveness of the practice through relational means. The study includes the recently explicated concept of relational justice and examines its links with employee emotional reactions to performance reviews. Moreover, the study unveils how managers’ negotiation styles in performance review meetings cause variations in the links between employees’ perceptions of relational justice and their emotional experiences.

Recent performance appraisal (PA) literature suggests that alongside cognitive biases, rating distortions may stem from rater disposition and PA context. The study investigated the role of social value orientation (rater disposition), PA purposes and rater accountability (PA context) toward rating distortions at both performance levels, i.e. good and poor.

The authors designed an experimental study and elicited data from N = 110 undergraduate students about two video-taped performances of good and poor performers. In these videos, two managers conducted assessment interviews of two different employees for the job of a sales representative at an information technology organization. To ensure the validity of performance ratings, the authors invited 10 senior managers to provide benchmark ratings of the video-taped performances. While being placed in two separate groups, the study participants gave performance ratings on both the video-taped performances. The authors used repeated-measures analysis to analyze data.

The results revealed that rating distortions took place not because of rater social value orientation, but the PA context. Different rating distortion patterns emerged for different levels of ratees' performance.

This study’s findings furnish new insights for assessing rating distortions for poor as well as good performers. Moreover, the results support previous findings that for good performers, accountable raters are tempted toward accurate ratings and refrained from deflation. Similarly, for poor performers, accountable raters do not inflate ratings. The findings will open research avenues to examine the role of PA purposes in rating distortions for different performance levels.

Therefore, this research study investigates the impact of business environment on the performance of the business organizations. (1) To understand the importance the environment in the success of the business entrepreneurship. (2) To explore the environmental factors that can affect the success of business entrepreneurship in Pakistan. (3) To establish relationship between the environmental factors and the sustained organizational performance of business entrepreneurships in Pakistan.

Drawing from the person–environment fit (PE fit) and the self-determination theory literature, this survey research study seeks to determine the impact of organizational environment upon sustained organizational economic performance. The main independent variable of the study encompasses its main three dimensions, i.e. leadership capacity, organizational culture and organizational politics. The dependent variable comprises the sustained economic performance of the organization. The research study hypothesized and tested a model in which the organizational environment (organizational culture, organizational politics and leadership) interplays with the organizational sustained performance.

Keeping in view the outcomes of this research work the following implications can be drawn. A leader can yield maximum productivity of employees, if he/she has leadership capacity to provide directions, skilled to minimize the stress level of the employees and able to motivate them in achieving organizational goals. Therefore, capacity of leader to handle difficult situations and develop PE fit is the key to organizational success in current scenario. The study also revealed a positive effect of organizational culture on organizational performance. The culture of the organizations provides an environment of openness to think, share and contribute toward goals of the organization. It enables employees to express themselves, develop person-organization common goals with self-determination. The PE fit provides a platform to feel free, express their feelings and opinions, and contribute in the decision-making process of organizations. The involvement in organizational activities provide a sense of responsibility, ownership and motivation to produce better results for the organizations.

PE fit perspective postulates that matching individual psychological needs and environmental supplies (provided by organization and society) generates positive attitudes and behaviors (Tepper et al., 2018). The effect between individuals and their environment is inherently reciprocal rather than a one-way effect (Goetz et al., 2021). The fundamental postulation support that the fit certainly improves performance, commitment and satisfaction of individuals in the context of organizations (De Cooman et al., 2019; Rau vola et al., 2020). Moreover, self-determination theory (SDT) is another perspective that emphasizes the attainment of autonomy, competence and relatedness in employees to outperform (Deci and Ryan, (2010). The self-determination theory revolves around the social-contextual conditions that support or obstruct the integral courses of self-motivation and psychological development, which will contribute toward organizational performance (Nazir et al., 2021).

The purpose of this paper is to discuss the roles of Zakat, Sadaqah and Qardhul Hassan within the context of the existing literature as major Islamic financial instruments for enhancing socio-economic justice amongst Muslims haves and have-nots as these enhance financial inclusion in Nigeria.

The discussion in this paper is based on secondary sources such as the divine knowledge contained in the Qur’an, Hadiths and the existing literature, such as previously conducted empirical studies and Islamic world view (Tawhidi epistemology).

This paper implores Islamic societies to use Zakat, Sadaqah and Qardhul Hassan as instruments that encourages wealth redistribution that promotes efficient and effective wealth redistribution between haves and have-nots as part of the vicegerent (khaliphah) role between mortal being (human) and his immortal creator (Allah). This paper concludes by suggesting the use of these Islamic financial instruments as means to enhance socio-economic justice and financial inclusion in the Nigeria’s Muslims’ communities that are negatively affected by the high rate of financial exclusion and poverty as had been previously practiced in the Muslim world throughout the Islamic history.

This paper provides critical suggestions on the ways Zakat, Sadaqah and Qardhul Hassan will contribute significantly towards assisting Nigeria in achieving its vision of reducing the financial exclusion rate that is currently put at 41.6% to 20% by the year 2020 and may foster inclusive growth and sustainable development. However, the limitation is that it is a mare conceptual study, and the future researchers may subject it to the scientific test to offer empirical evidence regarding the roles of Zakat, Sadaqah and Qardhul Hassan towards closing the gap of financial exclusion in Nigeria.

This paper contributes to the existing literature on the doctrine of the Islamic moral economy by recommending the adoption of Islamic financial instruments as tools for enhancing income redistribution and financial inclusion.

This paper aims to expand the literature on performance and volatility of Islamic funds and indices in comparison to their conventional unscreened counterparts, by studying the Moroccan case considering the recent introduction of Islamic finance in the country toward the end of 2015.

As there are still no Shariah-compliant indices in Morocco, the authors first applied four Shariah screening methodologies of some of the world leading equity index providers (i.e. Dow Jones, FTSE, S&P and MSCI) to screen the public listed companies in Casablanca Stock Exchange for Shariah compliance. Next, the authors constructed four Islamic float-weighted indexes for which they modeled the dynamic volatility using an extension of the AutoRegressive Conditional Heteroskedasticity models, namely, EGARCH(1,1).

The findings show that the screening process resulted in a well-diversified universe of Shariah-compliant stocks (25.6 per cent) to invest in. Furthermore, it is found that constructed Islamic indices outperformed the broad-based Moroccan All Shares Index (MASI) during the considered period of analysis (January 2013 to December 2014), and their long-run volatility is higher. This indicates that investors in Shariah-compliant stocks do not sacrifice financial performance for their risky investment. The estimates of the model show that volatility for the MASI is more persistent and takes longer time to die, and the leverage effect is positive for all indices, meaning that volatility of indexes’ returns is influenced more by good news than bad news, a result that is in contrast to other studies for developed countries.

On the arrival of the new banking law that introduced Islamic finance for the first time in Morocco, the authors suppose that these results could be very helpful for the Moroccan financial authorities in consideration with the construction of Islamic equity indices for Muslim investors seeking to invest ethically in accordance to their religious convictions but also for index funds managers and other equity market players.

The present study is the first of its kind in Morocco to construct Islamic indices using Shariah screening methodologies for which the volatility is modeled using an EGARCH(1,1) dynamic volatility model.

Salinity is one of the major problems in the coastal region of Bangladesh that contributes to 20% of the total land area. About 53% of the coastal region is affected by different degrees of salinity. Salinity intrusion in this area is mainly derived through climate change as well as anthropogenic factors that make this region more vulnerable. Hence, salinity intrusion has adverse effects on water, soils, agriculture, fisheries, ecosystem, and livelihoods of this region. To ensure the availability of food as well as drinking water, this chapter highlights how individual and community people have endeavored several adaptation measures to minimize salinity effects. Moreover, it further discloses governmental and other development organizations’ actions toward salinity to reduce its impacts.

This study aims to investigate the public deficit issue by contrasting conventional and Islamic views encompassing the paradigm, technical base, orientation and consequence detailed in nine discussions, which are rarely investigated in the research. There is a predisposition that contemporary Muslim scholars discuss the public deficit as well as the private sector perspective, which is used in the conventional conception, without riba as a primary feature.

The paper develops a comparative approach that derives two perspectives from the available literature using the qualitative method under the critical thinking method. It was drawn up in detail on how the paradigm and its related budgeting process contribute to public deficits, mainly in government institutions.

The paper reveals a prominent difference in public deficit in the Islamic view from a conventional perspective. From 9 points of comparison, the analysis covers 18 discussion that differentiates between private and public area criticism seems to overlap. The foundation giving a unique perspective in Islam toward public deficit is the concept of ownership that differs from capitalism, mainly the function of public spending is to distribute the wealth among people not for economic growth. The Islamic Government spent for public purposes based on cash-basis budgeting. The budgeting system in Islamic public spending is founded on treasure availability.

The paper uses a qualitative method that cannot empirically snapshot the actual or factual condition, in which subjectivity plays a plausible role. Furthermore, there is no actual sample (best practices) of the concept to be examined.

The research encompasses overlap between Islamic and conventional perspectives, including public and private issues regarding public deficits. The main beneficiary of the paper is a policymaker, including academicians or practitioners who are appropriate to use the concept in their circumstances.

The study is a pioneering study in public deficit comprehensively comparing conventional and Islamic perspectives and drawing up conceptual and technical aspects.