Purpose: Quality 4.0 is an emerging research topic concerned with rethinking how quality management needs to be adopted in the digital era. The purpose of this research is to conduct a systematic review on the state of the research in the field of Industry 4.0 impact on improving quality management aspects and how technology can be leveraged to enhance its practices.Design/methodology/approach: A systematic review of the literature published in the last 5 years is conducted. 52 papers were selected, mapped based on the technology they focused on and categorized based on the addressed quality aspects.Findings: The review revealed various areas where quality management can benefit from Industry 4.0 technologies, identified several research gaps and suggested new directions for future research. Firstly, the literature provided some insights about industry 4.0 potential contributions but lacks further detail on the exact applications and solutions through use cases and case studies. Secondly, there has been a focus on the potential benefits provided for quality control while there is a clear scarcity in terms of the other quality management tools and methodologies. Thirdly, there is a lack of studies on economic analysis or detailed impacts on quality costs that justifies the substantial investments needed. Finally, there is a need for including more studies about the mapping and integration of ISO 9001 requirements and Industry 4.0 features.Originality/value: This is the first attempt to conduct a comprehensive review on the ways industry 4.0 technologies can be leveraged for the field of quality management. Based on this review, several directions for further research in this area are identified.

Purpose: Maintenance is a critical business function with a great impact on economic, environmental and social aspects. However, maintenance decisions' planning has been driven by merely economic and technical measures with inadequate consideration of environmental and social dimensions. This paper presents a review of the literature pertaining to sustainable maintenance decision-making models supported by a bibliometric analysis that seeks to establish the evolution of this research over time and identify the main research clusters.Design/methodology/approach: A systematic literature review, supported with a bibliometric and network analysis, of the extant studies is conducted. The relevant literature is categorized based on which sustainability pillar, or possibly multiple ones, is being considered with further classification outlining the application area, modeling approach and the specific peculiarities characterizing each area.Findings: The review revealed that maintenance and sustainability modeling is an emerging area of research that has intensified in the last few years. This fertile area can be developed further in several directions. In particular, there is room for devising models that are implementable, based on reliable and timely data with proven tangible practical results. While the environmental aspect has been considered, there is a clear scarcity of works addressing the social dimension. One of the identified barriers to developing applicable models is the lack of the required, accurate and timely data.Originality/value: This work contributes to the maintenance and sustainability modeling research area, provides insights not previously addressed and highlights several avenues for future research. To the best of the authors' knowledge, this is the first review that looks at the integration of sustainability issues in maintenance modeling and optimization.

Digital transformation of warehousing is revolutionizing operations by integrating advanced technologies. Automated Guided Vehicles (AGVs) optimize the movement of goods, while Internet of Things (IoT) enhances connectivity and data collection for improved decision-making. Robots automate tasks like picking and packing, increasing efficiency and reducing errors. Blockchain technology enhances transparency and traceability in the supply chain, building trust and reducing fraud. Digital twins create virtual replicas of warehouses for simulation and optimization, enabling proactive problem-solving and improved resource allocation. Such transformation addresses the increasing complexity and dynamic nature of warehousing in the modern marketplace. This systematic literature review, following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) framework, investigates the role of optimization models in this digital shift from 2010 to 2023. The findings highlight the crucial enhancements and practical implications brought about by these technologies, showcasing their impact on streamlining operations. These improvements include advancements in path planning, task allocation, inventory management and storage assignment which significantly enhance operational effectiveness within warehousing. The results demonstrate a 25-30% increase in perishable food freshness, a 10% reduction in picking time, a 14.8% increase in space utilization, and a 9.95% decrease in total costs. Moreover, the findings call attention to the insufficient analysis on the economic implications of digital transformations in warehousing, notably in cost reductions and Return on Investment (ROI) evaluations which are crucial metrics for evaluating the financial success and wider benefits of digital transformation initiatives, such as customer satisfaction and revenue growth. The review also identifies critical research gaps, including the need to incorporate sustainability into optimization models, strategies for adapting to dynamic environments, the exploration of collaborative robots (cobots), and the optimization of reverse logistics and returns. This review provides a comprehensive foundation for future research and emphasizes the potential of digitalization to revolutionize warehousing practices through innovative optimization strategies and real-world applications.