Daily Archives: September 2, 2025

Authors: Meegada Maneeth

Abstract: This study explores the underlying service dimensions that determine customer satisfaction for Vistara Airlines, with particular focus on the SERVQUAL model—comprising Reliability, Assurance, Tangibles, Empathy, and Responsiveness. Analysis reveals that tangibles (such as modern aircraft, in-flight services, and physical comfort) and empathy (personalized care and attention) significantly contribute to customer satisfaction. Historically, Vistara has enjoyed a strong reputation for premium service, earning high customer satisfaction and industry accolades. However, recent developments—especially following its merger with Air India—have led to increased customer dissatisfaction, citing issues with staff responsiveness, flight reliability, and diminished service quality. While Vistara once set benchmarks in India's airline industry, the gap between customer expectations and actual service delivery has widened post-merger, indicating a decline in perceived service quality. This shift highlights the importance of maintaining service consistency and customer trust during organizational transitions.

Published by: vikaspatanker

Authors: Saravanan Balachandran

Abstract: In today’s interconnected and hybrid work environment, global tech teams frequently face miscommunication, collaboration inefficiencies, and cultural misunderstandings—issues rooted not in technical ability, but in the absence of robust Cross-Cultural Competence (CCC). As artificial intelligence (AI) and immersive technologies evolve, new possibilities have emerged for delivering soft skills training through Virtual Reality (VR)-driven experiential simulations. This study evaluates the effectiveness of AI-powered VR simulations in developing CCC among early-career professionals working in multinational technology firms. Grounded in Kolb’s Experiential Learning Theory (ELT), Bennett’s Developmental Model of Intercultural Sensitivity (DMIS), and Bandura’s Social Cognitive Theory, this mixed-methods study investigates how AI-adaptive VR modules influence user progression along intercultural sensitivity stages. The simulations are designed to mimic high-stakes multicultural workplace scenarios—such as remote team conflict, hierarchical ambiguity, and cross-cultural negotiation—leveraging real-time emotional feedback and decision-based branching to personalize the learning journey.Participants from global tech companies underwent structured VR-based learning interventions (3+ ELT cycles) over a four-week period. Pre- and post-assessments using the Intercultural Development Inventory (IDI) and Employer-Validated Global Soft Skills Index (EGSSI) revealed statistically significant growth in CCC, especially in adaptation and empathy. Qualitative reflections and biometric engagement data also indicated higher immersion and emotional resonance compared to video- or lecture-based training. The study offers compelling evidence that AI-augmented, VR-enabled soft skills programs can bridge cultural divides more effectively than traditional methods. It positions immersive technology as not just a medium, but a transformative agent in global workforce development.

Published by: vikaspatanker

Authors: Shubham Kumar, Dr. P.N Ahirwar

Abstract: The increasing demand for environmentally sustainable refrigeration and air-conditioning systems has accelerated research on carbon dioxide (CO₂) as a natural refrigerant, particularly in transcritical cycles. Gas coolers play a pivotal role in determining system efficiency, and finned tube configurations have emerged as a promising solution to enhance heat transfer performance while maintaining compactness. This review paper provides a comprehensive analysis of CO₂ finned tube gas coolers, highlighting their design considerations, thermal–hydraulic performance, and optimization techniques. Key factors such as fin geometry, tube arrangement, material selection, and flow distribution are critically examined in relation to heat transfer enhancement and pressure drop characteristics. Studies investigating numerical simulations, experimental measurements, and hybrid modeling approaches are summarized to identify performance trends and governing mechanisms. Furthermore, the influence of operating parameters such as mass flux, inlet temperature, and gas cooler pressure on system efficiency is discussed. The review also emphasizes advancements in surface modifications, louvered and wavy fin structures, and novel compact designs aimed at improving thermal performance. Current challenges such as high operating pressure, material durability, and cost-effectiveness are outlined, along with opportunities for integrating advanced manufacturing techniques and nanofluid applications. The findings of this review underline the importance of finned tube gas coolers in maximizing the potential of CO₂-based systems and provide insights for future research directions in sustainable refrigeration technologies.

DOI:

 

 

Published by: vikaspatanker

Authors: Merajul Hasan, Dr. P.N Ahirwar

Abstract: The design and geometry of cavities play a crucial role in determining the thermal performance and overall efficiency of solar collectors. Different cavity configurations influence heat absorption, heat loss reduction, and fluid heat transfer characteristics. This review presents a comprehensive analysis of various types of cavities employed in solar collectors, including cylindrical, conical, spherical, hemispherical, triangular, and compound cavity designs. The study emphasizes how cavity shape influences thermal performance. Comparative findings from experimental and numerical investigations reported in the literature highlight that well-optimized cavity geometries can significantly enhance solar energy utilization by improving heat retention and minimizing losses. The review also identifies key parameters influencing cavity performance, such as insulation, material properties, and flow arrangements, and provides insights into the suitability of different cavity types for diverse climatic and operational conditions. Finally, the paper outlines potential research directions focusing on hybrid cavity designs, advanced coatings, and integration with modern energy systems, aiming to further improve the efficiency and sustainability of solar thermal technologies.

DOI:

 

 

Published by: vikaspatanker