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Winglets play a major role in saving fuel costs because they reduce the lift-induced drag formed at the wingtips. The purpose of this paper is to obtain the best orientation of the winglet for the Office National d’Etudes et de Recherches Aérospatiales (ONERA) M6 wing at Mach number 0.84 in terms of lift to drag ratio.

A computational fluid dynamics analysis of the wing-winglet configuration based on the ONERA M6 airfoil on drag reduction for different attack angles at Mach 0.84 was performed using analysis of systems Fluent. First, the best values of cant and sweep angles in terms of aerodynamic performance were selected by performing simulations. The analysis included cant angle values of 30°, 40°, 45°, 55°, 60°, 70° and 75°, while for the sweep angles 35°, 45°, 55°, 65° and 75° angles were used. The aerodynamic performance was measured in terms of the obtained lift to drag ratios.

The results showed that slight alternations in the winglet configuration can improve aerodynamic performance for various attack angles. The best lift to drag ratio for the winglet was achieved at a cant angle of 30° and a sweep angle of 65°, which caused a 5.33% increase in the lift to drag ratio. The toe-out angle winglets as compared to the toe-in angles caused the lift to drag ratio to increase because of more attached flow at its surface. The maximum value of the lift to drag ratio was obtained with a toe-out angle (−5°) at an angle of attack 3° which was 2.53% greater than the zero-toed angle winglet.

This work is relatively unique because the cant, sweep and toe angles were analyzed altogether and led to a significant reduction in drag as compared to wing without winglet. The wing model was compared with the results provided by National Aeronautics and Space Administration so this validated the simulation for different wing-winglet configurations.

This study aims to explore the firm's specific, opacity and economy-specific variables to explain the variation in South Asian market returns and indicate that how the difference in adoption of accounting standards refers to the effect of the movement in stock returns.

Following the scope of the study, factor analysis, fixed effect, Driscoll and Kraay standard errors (DKSE) and Panel Corrected standard error (PCSE) models have been inducted to determine the influence of firm-specific, opacity and economy-specific variables on stock returns. The sample of study comprises 1,885 firms from five countries located in the South Asia region with the period 2005–2018. To ensure the reliability of data, firm-specific data have been collected from DataStream International, while an international country risk guide was used to compile the data for economy-specific variables.

This study concluded that firm-specific variables showed a consistent and significant association with stock return except for beta, accrual and momentum while earning aggressiveness was the only factor in opacity measure to capture the variation in stock return. The implementation of international accounting standards seemed to be significant and proves to be helpful to enhance the quality of accounting information.

The limitations of this study comprised the estimation error by avoiding the firm's observations with negative equity in case of earning opacity and majority (more than 50%) of the observation belongs to a single market as India out of final sample which leads to having biasedness in findings.

This study helps the investors to consider the firms with smaller market capitalization and lower book to market ratio and avoid the momentum strategy under firm specific factors. Moreover, earning aggressiveness under opacity domain capture the variation in stock return and must be considered while investing funds.

The influence of adoption of international accounting standards along with firm and economy specific variable in South Asian Equity Markets return was the major contribution. Moreover, the inclusion of DKSE and PCSE models to examine the relevance of the financial and economic informational environment was also considered as a part of major contribution of this study.

Wealth Management Products (WMPs) are the largest and most crucial component of China's Shadow banking, which are off the balance sheet and considered as a substitute for deposits. Commercial banks in China are involved in the issuance of WMPs mainly to; evade the regulatory restrictions, move non-performing loans away from the balance sheet, chase the profits and take advantage of yield spread (the difference between WMPs yield and deposit rate).

In this study, the authors investigate what bank related characteristics and needs; influenced and prompted the issuance of WMPs. By using a quarterly panel data from 2010 to 2019, this study performed the fixed effects approach favored by the Hausman specification test, and a feasible generalized least square (FGLS) estimation method is employed to deal with any issues of heteroscedasticity and auto-correlation.

This study found that there is a positive and significant association between the non-performing loan ratio and the issuance of WMPs. Moreover, profitability and spread were found to play an essential role in the issuance of WMPs. The findings of this study suggest that WMPs are issued for multi-purpose, and off the balance sheet status of these products makes them very lucrative for regulated Chinese commercial banks.

Non-guaranteed WMPs are considered as an item of shadow banking in China, as banks do not consolidate this type of WMPs into their balance sheet; due to that reason, there is no individual bank data available for the amount of WMPs. The authors use the number of WMPs issued by banks as a proxy for the bank's exposure to the WMPs business.

From a regulatory perspective, this study helps regulators to understand the risk associated with the issuance of WMPs; by providing empirical evidence that Chinese banks issue WMPs to hide the actual risk of non-performing loans, and this practice could mislead the regulators to evaluate the bank credit risk and loan quality. This study also identifies that Chinese banks issue WMPs for multi-purpose; this can help potential investors to understand the dynamics of WMPs issuance.

This research is innovative in its orientation because it is designed to investigate the less explored wealth management products (WMPs) issued by Chinese banks. This study's content includes not only innovation but also contributes to the existing literature on the shadow banking sector in terms of regulatory arbitrage. Moreover, the inclusion of FGLS estimation models, ten years of quarterly data, and the top 30 Chinese banks (covers 70% of the total Chinese commercial banking system's assets) make this research more comprehensive and significant.

It is commonly observed in trainings that all trainees do not get satisfied with the performance of the trainer. The usual way to increase the satisfaction of trainees is a stress on improving task communication of the trainer. It is based on the assumption that effective task communication essentially fosters training effectiveness. This study aims to provide preliminary evidence that effective task communication can also obstruct training effectiveness besides promoting it. To achieve this objective, the authors hypothesized a dual-process model of training effectiveness based on uncertainty reduction theory.

This was a field study in which the authors collected time-lagged data from seven trainings. The trainings were designed to impart technical knowledge of multilevel analyses to professional social science researchers. Confirmatory factor analysis for ordinal indicators was used to test the measurement properties of the model and scales. Structural equation modeling for ordinal indicators was used to test hypotheses.

This study provided evidence of an overall positive effect of the trainer’s task communication on the trainee’s communication satisfaction. A complex mediation analysis also revealed the existence of two opposite psychological processes. While the first process transmitted the positive effect of task communication to communication satisfaction, the other process diminished this positive effect. Implications for the theory and practice of training are discussed.

Training scholars and practitioners universally believe that an effective task communication of trainers essentially promotes training effectiveness. This study has provided empirical evidence that this assumption is an incomplete picture of a complex reality that requires further investigation.

The most critical phase of a change process is change implementation and it is evident that the masterfully originated change process fails due to its poor implementation. Therefore, the purpose of this paper is to profile how knowledge management (KM) strategies, personalization and codification, are helpful in successful change implementation by reducing employee cynicism and increasing the level of readiness for change.

Data were collected from 196 executives of National Bank of Pakistan at Time 1 (pre-implementation) and Time 2 (post-implementation) with the temporal research design. Multiple regression analysis is used to test the direct effect; Preacher and Hayes (2004) test is applied to measure the mediating effect and guidelines of Aguinis (2004) are followed for analyzing the moderating effect.

The result of the direct effect shows that both KM strategies have significant positive effect on successful change implementation. Further, mediation analysis proves that readiness for change partially mediates between KM strategies and successful change implementation. In addition, partial interactive effects of employee cynicism is observed between readiness for change and successful change implementation.

The management should initiate steps to boost personalization and codification strategies at their optimal levels. This would ultimately be helpful to implement a successful change through developing readiness for change and reducing the employee cynicism regarding change.

The area of successful change implementation in the context of KM strategies was untapped, and is examined in this study.

In recent times, progression of technology and growing demands of customers have substantially influenced the services sector to introduce fast real-time mechanisms for providing up-to-mark services. To meet these requirements, organizations are going to change their end-user operating systems but success rate of change is very low. The purpose of this paper is to address one of the practitioners’ complaint “no one tells us how to do it” and uncovers the indirect effects of knowledge management (KM) strategies: personalization and codification, toward organizational change via organizational learning and change readiness. The current study also highlights how organizational learning and change readiness are helpful to reduce the detrimental effects of organizational change cynicism toward success of a change process.

Temporal research design is used to get the appropriate responses from the targeted population in two stages such as pre-change (Time-1) and post-change (Time-2). In cumulative, 206 responses have been obtained from the banking sector of Pakistan.

The results of the current study are very promising as it has been stated that KM strategies have an indirect effect on successful organizational change through organizational learning and change readiness. Moreover, change cynicism has a weakening effect on a change process and can be managed through effective learning orientation of employees and developing readiness for change in organizations.

Change agents have to use an optimal mix of personalization and codification strategies to develop learning environment and readiness for change in organizations that are beneficial for implementing a change successfully. Moreover, change readiness and organizational learning in the context of change are equally beneficial to reduce organizational change cynicism as well.

This study is introducing a unique model to initiate a change with the help of KM strategies, organizational learning and readiness for change.

Leadership’s dark side has been on the rise, negatively affecting organizations. The phenomenon, however, is not as simple as it seems. Based on social exchange and conservation of resource theories, current research aims to explore the impact of psychological entitlement on despotic leadership, ultimately leading to instigated workplace incivility. Moreover, emotional exhaustion was tested as a mediator and Islamic work ethics as a moderator.

This study aims to examine the effect of dark side of leadership and for this, the survey approach was used to collect data from 402 bankers from Pakistan’s twin cities (Islamabad and Rawalpindi).

The results showed that psychological entitlement leads to despotism and despotic leaders become a reason for instigated workplace incivility. Results also showed that emotional exhaustion mediated, and Islamic work ethics moderated the relationship.

Bankers have a demanding job which is further exacerbated by despotic leaders feeling psychologically entitled and instigating employees toward uncivil behaviors as they experience emotional exhaustion. Despotic leaders need to be dealt with to reduce instigated incivility and Islamic work ethics can also aid in improving employee behavior.

Literature available on both antecedents and effects of the leadership’s dark side is limited, and this study strives to contribute by extending the literature available on psychological entitlement, despotic leadership and instigated workplace incivility relationships.

This study aims to examine the hedge and safe-haven properties of the Sukuk and green bond for the stock markets pre- and during the COVID-19 pandemic period.

To test the hedge and safe-haven characteristics of Sukuk and green bonds for stock markets, the study first uses the methodology proposed by Ratner and Chiu (2013). Next, the authors estimate the hedge ratios and hedge effectiveness of using Sukuk and green bonds in a portfolio with stock markets.

Strong safe-haven features of ethical (green) bonds reveal that adding green bonds into the investment portfolios brings considerable diversification avenues for the investors who tend to take fewer risks in periods of economic stress and turbulence. The hedge ratio and hedge effectiveness estimates reveal that green bonds provide sufficient evidence of the hedge effectiveness for various international stocks.

The study has significant implications for faith-based investors, ethical investors, policymakers and regulatory bodies. Religious investors can invest in Sukuk to relish low-risk and interest-free investments, whereas green investors can satisfy their socially responsible motives by investing in these investment streams. Policymakers can direct the businesses to include these diversifiers for portfolio and risk management.

The study provides novel insights in the testing hedge and safe-haven attributes of green bonds and Sukuk while using unique methodologies to identify multiple low-risk investors for investors following the uncertain COVID-19 pandemic.

The present research aims to empirically test the “Barriers to abusive supervision model” to find how employee-related (core self-evaluations) and situational factors (perceived job dependency) make an employee trapped in the spiral of supervisory abuse. In addition, the work–family spillover lens is used to explain how employees' retaliation is targeted at their families in response to abuse from their bosses.

The current study has employed a three-wave longitudinal moderated mediation design and analysed data from 265 employees working in the hospitality industry of Pakistan.

The results of this study have shown that low core-self evaluations put employees in a spiral of supervisory abuse and they instil aggression towards their families. This association is further strengthened when employees are dependent on their job.

This study is one of the first to use the “Barriers to Abusive supervision” model to answer who and in which conditions tend to trap in the spiral of abuse and integrate the work-to-family interface model for elaborating the outcomes to the family domain.

The increasing number of tourists in the Muslim world every year has encouraged digital business developers and the Sharia banking industry to integrate halal product and service apps with the Sharia mobile banking system. The fourth wave of the industrial revolution has changed the consumer paradigm, creating a young generation that uses digital service transaction systems in their daily lives. This paper aims to investigate the factors that determine intention to use halal tourism apps amongst Muslim tourists to provide insights promoting the development of halal tourism in Indonesia.

The research was conducted using an online survey approach. The sample comprised 205 Muslim Millennial and Generation Z travellers. The data collected were analysed using partial least square structural equation modelling. There were three analysis stages: evaluation of the measurement model, assessment of the structural model and hypothesis testing.

The findings indicated that trust mediated the relationship between perceived ease of use and perceived usefulness on individual intentions and that halal knowledge positively and significantly impacted individual intentions. In contrast, religiosity was not a significant influence on individual intentions.

The paper expanded the technology acceptance model by incorporating the key constructs of halal knowledge, religiosity and trust into an integrated research framework; this represented a novel step, especially in the context of halal tourism. The finding that trust mediated the relationship between perceived ease of use and perceived usefulness fills a gap in previous research, which has rarely included the trust construct in technology acceptance models.