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Thermal energy storage systems use thermal energy to elevate the temperature of a storage substance, enabling the release of energy during a discharge cycle. The storage or retrieval of energy occurs through the heating or cooling of either a liquid or a solid, without undergoing a phase change, within a sensible heat storage system. In a sensible packed bed thermal energy storage system, the structure comprises porous media that form the packed solid material, while fluid occupies the voids. Thus, a cavity, partially filled with a fluid layer and partially with a saturated porous layer, has become important in the investigation of natural convection heat transfer, carrying significant relevance within thermal energy storage systems. Motivated by these insights, the current investigation delves into the convection heat transfer driven by buoyancy and entropy generation within a partially porous cavity that is differentially heated, vertically layered and filled with a hybrid nanofluid.

The investigation encompasses two distinct scenarios. In the first instance, the porous layer is positioned next to the heated wall, while the opposite region consists of a fluid layer. In the second case, the layers switch places, with the fluid layer adjacent to the heated wall. The system of equations for fluid and porous media, along with appropriate initial and boundary conditions, is addressed using the finite difference method. The Tiwari–Das model is used in this investigation, and the viscosity and thermal conductivity are determined using correlations specific to spherical nanoparticles.

Comprehensive numerical simulations have been performed, considering controlling factors such as the Darcy number, nanoparticle volume fraction, Rayleigh number, bottom slit position and Hartmann number. The visual representation of the numerical findings includes streamlines, isotherms and entropy lines, as well as plots illustrating average entropy generation and the average Nusselt number. These representations aim to provide insight into the influence of these parameters across a spectrum of scenarios.

The computational outcomes indicate that with an increase in the Darcy number, the addition of 2.5% magnetite nanoparticles to the GO nanofluid results in an enhanced heat transfer rate, showing increases of 0.567% in Case 1 and 3.894% in Case 2. Compared with Case 2, Case 1 exhibits a 59.90% enhancement in heat transfer within the enclosure. Positioning the porous layer next to the partially cooled wall significantly boosts the average total entropy production, showing a substantial increase of 11.36% at an elevated Rayleigh number value. Positioning the hot slit near the bottom wall leads to a reduction in total entropy generation by 33.20% compared to its placement at the center and by 33.32% in comparison to its proximity to the top wall.

The intention-behavior gap that occurs when one’s actions do not align with their intentions has been the topic of interest of many researchers. However, the effects of the various constructs that influence the intention-behavior gap in service failure and recovery remain under-explored to date. To fill this gap, this study aims to examine the relationship between switching intention (i.e. intention) and customer exit (i.e. behavior) and the moderating roles of failure severity and service recovery satisfaction.

To test the proposed hypotheses, the authors used a longitudinal panel involving 821 customers who actually experienced a service failure and recovery in 38 fitness centers in Brazil. The data analysis is composed of logistic regression and cross-tabulation.

The results confirmed the significant role of switching intention on customer exit and the moderating effect of failure severity (but not service recovery satisfaction) in the relationship between switching intention and customer exit. Most of all, switching intention had low explanatory power for customer exit, confirming the presence of the intention-behavior gap. The authors further identified a weaker presence of the intention-behavior gap for female (vs male) customers and for those who experienced process failure (vs outcome failure).

Although the authors confirmed the intention-behavior gap, the biggest proportion of the variance remains unexplained. Thus, it is important to explore the roles of other possible drivers, moderators and mediators.

As switching intention is not a strong predictor of customer exit, managers should not assume that those who appear to be on the verge of switching will immediately exit the service provider.

As researchers question the explanatory power of intention for actual behavior, this paper confirms that there is an intention-behavior gap in service failure and recovery. Moreover, given that most researchers have focused on the positive outcomes of service recovery efforts, such as customer loyalty and commitment, studying negative outcomes, including switching intention and customer exit, is a key contribution of this research.

This study aims to empirically analyze the effects of marketing communications, such as advertisement/promotion and social network service (SNS) content, on consumer engagement (CE), brand trust and brand loyalty.

The study’s participants were 230 US and 376 Korean consumers who have used (i.e. contacted) a food service establishment (i.e. family restaurant) at least once before and who continue to use an SNS (e.g. Facebook and Instagram). This study conducted a hypothesis test using structural equation modeling analysis. In addition, hierarchical analysis was performed to further generalize and support the statistical analysis results.

Advertisement/promotion and SNS content have a statistically significant positive effect on CE. Advertisement/promotion has a statistically significant positive effect on brand trust, and SNS content has a statistically significant negative effect on brand trust. CE has a statistically significant positive effect on brand trust, and CE and brand trust have a statistically significant positive effect on brand loyalty. No statistically significant differences were shown between the US and Korean consumer groups (critical ratios for difference of path coefficient < ± 1.96). The hypothesis test results of the structural equation model analysis and hierarchical analysis were the same for the entire group.

The findings indicate that the overall mediating role of CE is important. To the best of the authors’ knowledge, this is the first study to investigate which marketing communication channels are most effective in the restaurant sector.

The luxury experience is a growing and crucial component of luxury marketing. Experiences inspire consumers to engage with luxury brands. Although several research studies have shed light on the origin, development, and prominence of luxury experiences among consumers, there is a scarcity of research that analyzes the current knowledge holistically. As a result, this study uses a systematic literature review technique to better understand the trends in the luxury experience and consumer behavior literature and suggests future research directions to further develop the subject area.

Using the theory-context-characteristics-methodology (TCCM) framework, this study examines 130 articles on the luxury experience and consumer behavior.

Most research on luxury experiences has focused on the luxury service experience in the context of hospitality and tourism. Future researchers should explore avenues for providing luxury experience to consumers in the luxury products industry. In addition, more research is needed into the influences of the recent COVID-19 outbreak and technological advancements on consumers' luxury experiences.

The study is unique as it (1) presents a state-of-the-art understanding of the luxury experience and consumer behavior literature by analyzing the applied theories, research contexts, study characteristics, and methods used in the past studies and (2) suggests future research opportunities to advance the field. The findings will also assist luxury brand managers in designing a consumer's exceptional luxury experience.

In mobile platforms, an increasing number of third-party developers (developers) create new ideas and enhance their expertise through knowledge sharing on the developers’ community. Notwithstanding the importance of the sharing and its uniqueness on the mobile platform contexts, the motivational factors of sharing their knowledge on the community have been underinvestigated. Therefore, this paper aims to provide a comprehensive framework to enhance the knowledge sharing in the mobile platform context.

Based on the theory of reasoned action, this paper incorporated intrinsic and internalized extrinsic motivations with two unique features of platform environments: platform open policies and coopetitive relationships. To test, an online survey was distributed to four developer communities in Korea, two Android and two iOS communities.

The results show that a platform pursuing higher openness causes the developers to find higher social pressure for information sharing. The coopetitive relationship with other developers in the same platform takes dissimilar roles; reciprocity significantly increases subjective norm, while rivalry does attitude. Self-efficacy and self-development stimulate knowledge sharing. Furthermore, multilevel analysis to capture the difference between two leading mobile platforms indicates no path difference but, interestingly, shows significant mean difference between the two platforms regarding perceived openness and rivalry.

With this paper, the authors fulfill the need to understand the knowledge-sharing intention of developers in the context of mobile platforms where developers can be potential competitors or cooperators and where two platforms offer different policies and developmental environments.

Research on showrooming has focused on investigating its antecedents, motivators and characteristics, leaving a gap regarding its consequences. Our study intends to build a comprehensive framework to examine the role of showrooming behaviour on showrooming satisfaction and customer loyalty while exploring its antecedents.

Data collection took place in Brazil through an electronic form distributed on social media, reaching 393 people. After eliminating responses from those who had no showrooming experience, the final sample consisted of 310 respondents. The questions captured the costs and benefits of showrooming, internet savviness, showrooming behaviour, satisfaction with showrooming and customer loyalty (i.e. repurchase intention and positive word-of-mouth). We performed partial least squares data analysis by means of the statistical package Smart PLS 4.

The results show that showrooming behaviour is positively influenced by internet savviness and the perceived benefits of showrooming but not by the perceived costs of showrooming. In addition, showrooming behaviour positively influences satisfaction with showrooming and customer loyalty (i.e. repurchase intention and positive word-of-mouth). Finally, we identify satisfaction with showrooming as a mediator between showrooming behaviour and customer loyalty.

Given that the implications of showrooming behaviour on customer loyalty remain understudied, this work contributes to the marketing literature by demonstrating the influence of showrooming behaviour on satisfaction with showrooming and its consequential effect on customer loyalty. Moreover, we confirmed the mediating role of customer satisfaction in the relationship between showrooming behaviour and customer loyalty.

This study aims to focus on understanding the consumer-luxury brand relationships among Generation Z. Generation Z is an up-and-coming generational cohort that has received limited research attention in the domains of both consumer-brand relationships and luxury branding, despite its growing size and purchasing power. Therefore, this study highlights the distinctive patterns of Generation Z’s relationship with luxury by identifying their choice of a luxury brand, the nature of the brand relationships, what characterizes these relationships and the internal and external influences that shape these relationships.

This study used brand collage construction. A total of 56 Generation Z respondents created brand collages that covered 38 different luxury brands. The data from the collages and their accompanying descriptions were evaluated using content analysis.

This study identifies Generation Z’s unique yet expansive view of luxury that encompasses not only traditional luxury but also masstige and non-traditional luxury brands. Moreover, the findings generally support that Generation Z’s relationships with luxury brands are characterized by “like” rather than “love”; while Generation Z may feel a high level of loyalty toward luxury brands in terms of attitudes and behaviors, they do not necessarily have strong, passionate feelings for them.

The findings of this study offer a comprehensive understanding of Generation Z’s brand relationship with luxury. Luxury marketers need to recognize that for Generation Z consumers, luxury is an integral part of their everyday lifestyle more than a display of success, which is clearly different from previous generations.

Displaying a sense of humour provides various interpersonal benefits including reducing tension and promoting conflict resolution, but should a firm use humour in response to publicly viewable online customer complaints after a service failure? The purpose of this study is to demonstrate that a firm’s use of humour in response to negative online consumer reviews has both positive and negative effects on perceptions of corporate image from a customer-as-onlooker perspective.

Three experimental studies are conducted and analysis of variance is used to empirically test the hypotheses.

Although humorous responses have an unfavourable influence on perceived trustworthiness of the firm, they have a favourable influence on perceived excitingness of the firm. The former influence is tied to lower perceived firm sincerity, whereas the latter is tied to higher perceived firm innovativeness and coolness. Furthermore, humour within the customer complaint itself is shown to moderate the influence of humorous responses on perceptions of the firm. Finally, regardless of the type of humour used (i.e. affiliative or aggressive humour) in the humorous response, the positive effect of humorous response remains strong, although aggressive humour further aggravates the negative impact of humorous response on trustworthiness.

The experimental set-up may limit external validity of the study, and the research is limited to the variables examined.

Humorous response is identified as a non-traditional approach to online customer complaints that poses a double-edged sword for managers of service organizations. Firms should avoid using humour in online service recovery if perceptions of trustworthiness are critical or if complaints are written in a neutral tone. However, such responses may be successfully used when a firm wants to position itself as exciting and if complaints are also humorous. Finally, firms are advised to avoid aggressive humour.

The present research represents one of the few studies in marketing to examine the potential of injecting humour into complaint management and service recovery. In addition, this study considers the consumer-as-onlooker perspective inherent in social media.

In managing hierarchical loyalty programs (HLP), firms often use a reward point expiration and status demotion policy to reduce financial liability and to encourage repeat purchases. This study aims to examine how point expiration and status demotion policies affect customer patronage, the role of extension strategies in mitigating the negative effects of these policies on customers and the moderating role of status endowment in the effect of point expiration on customers patronage following status demotion experience.

Three experiments were conducted using the hotel industry as the context. The hypothesized relationships were tested using ANOVA and a serial moderated mediation analysis using SPSS PROCESS Macro.

Customers subjected to reward point expiration exhibited a higher level of anger and perceived severity of the problem than those subjected to status demotion in HLP. Consequently, when customers experienced both point expiration and status demotion, the point extension strategy rather than the status extension strategy was found to be a more effective remedy for reducing perceived unfairness, although there was no change in the level of patronage reduction between the two extension strategies. Importantly, the effect of point expiration on patronage reduction was stronger among endowed-status customers than earned-status customers, serially driven by heightened feelings of embarrassment and perceived unfairness.

The study adds to the existing literature on HLP by comparing the effects of point expiration and status demotion on customer patronage with practical insights for HLP managers.

The purpose of this paper is to examine if the announcement of corporate power purchase agreements (PPAs) induce significant effects on the electricity buyers' stock returns.

This is an event study based on the Fama French Five Factor Model which uses several significance tests and robust regression approaches.

The announced closing of corporate PPAs induces significant positive abnormal stock returns. This announcement effect is even more pronounced in case of virtual PPAs.

To the best of the author‘s knowledge, this study is the first which explictly investigates the announcement effects of corporate PPAs, which are closed between the owner of the renewable energy asset and the institutional end consumer. In addition, this study extends the event study approach by robust regression methods.