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The aim of this study is to measure portfolio diversification benefits of the Turkey-based equity investors into top trading partner countries. Portfolio diversification benefits are analyzed from the viewpoint of two types of investors in Turkey: conventional equities investors and Islamic equity investors.

In order to evaluate the time-varying correlations of the trading partner country's stock index returns with the Turkish stock index returns, the multivariate-generalized autoregressive conditional heteroskedasticity–dynamic conditional correlation (GARCH-DCC) is applied based on daily data covering 13 years' period between January 22, 2008 and January 22, 2021.

The results revealed that the US stock indices provide the most diversified benefit for both conventional and Islamic Turkey-based equity investors. In general, Islamic indices exhibit relatively lower correlation with trading partners than conventional indices. Turkey and Russia are recorded as the most volatile indices.

The diversification potential in trading partners for Turkey-based Islamic equity investors has not been studied yet. This study is to fill in this gap in the literature and to give fruitful insights to both conventional and Islamic investors.

This multilevel study investigates the effect of employees' perception of nepotism on tolerance to workplace incivility through the mediating role of psychological contract violation and the moderating role of authentic leadership in organizations.

Using time-lagged data from 547 frontline employees working in four- and five-star hotels, this study's hypotheses were analyzed by conducting hierarchical regression analysis and hierarchical linear modelling.

The findings indicate that non-family members' perception of nepotism triggered perceived tolerance to the uncivil behavior of family members by the management and that this relationship between nepotism perception and tolerance to workplace incivility was mediated by psychological contract violation. In line with expectations, authentic leadership moderated the effect of nepotism perception on tolerance to workplace incivility.

This study is among the first to examine the effects of nepotism perception on tolerance to workplace incivility by focusing on the mediator role of psychological contract violation at the individual level and the moderator role of authentic leadership at the group level.

This study investigates the influences of social media marketing activities (SMMAs) on brand preference by focussing on the mediation influence of brand recognisability and the moderator influence of brand signature in higher education institutions in Germany. A total of 257 students were surveyed and the data gathered were tested through partial least squares structural equation modelling. The findings demonstrated that higher-education institutions’ SMMAs had a significant effect on both brand recognisability and students’ brand preference. The findings also empirically proved the significant mediator influence of brand recognisability and the moderator influence of brand signature upon the association of higher education institutions’ SMMAs and students’ brand preference. It is anticipated that the findings of this research could be utilised as a significant solution in the improvement of higher education institutions’ SMMAs, specifically focussing on the significance of each component of SMMAs.

The purpose of this paper is to study joint inventory and pricing strategy for a continuous inventory review system. While dynamic pricing decisions are often studied in the literature along with inventory management, the authors' aim in this study is to obtain a single long‐run optimal price; also to gain insight about how to obtain the optimal price and inventory control variables simultaneously and then the benefits of joint optimization of the inventory and pricing decisions over the sequential optimization policy often followed in practice.

A general (R;Q) policy system with fixed cost of ordering is modelled and then the case where unsatisfied demand is lost is studied. General forms of both the additive and multiplicative demand models are used to obtain structural results.

By showing optimality conditions on the price and inventory decision variables, two algorithms on how to obtain optimal decision variables, one for additive and another for multiplicative demand‐price model are provided. Through extensive numerical analyses, the potential profit increases are reported if the price and inventory problem are solved simultaneously instead of sequentially. In addition, the sensitivities of optimal decision variables to system parameters are revealed.

Although there are several studies in the literature investigating emergency price change models, they use arbitrary exogenous prices menus. However, the value of a price change can be better appreciated if the long‐run price is optimal for the system.

Very few researchers have investigated constant price and inventory optimization, and while there are several past studies demonstrating the benefits of dynamic pricing over a static one, there still are not many findings on the benefit of joint price and inventory optimization.