Factories of the Future in Digitization of Industrial Urban Areas

: This paper delves into the integration of Factories of the Future (FoF) and digital twin technologies within urban contexts, marking a significant leap in Smart Cities development. We present a thorough exploration of the principles and a scientifically grounded framework designed for seamlessly blending advanced manufacturing systems with the urban environment’s digital and physical aspects. Our detailed analysis has identified core principles crucial for this integration, focusing on interoperability, sustainability, adaptability, stakeholder collaboration, and strong data governance. We propose a structured framework that puts these principles into action, outlining strategic routes for incorporating digital twin and Building Information Modeling (BIM) technologies into FoF, establishing public-private partnerships, enhancing education and workforce development, and setting up mechanisms for ongoing evaluation and enhancement. The potential of this integration to transform urban development is vast, providing a model for boosting operational efficiency, driving economic growth, and enhancing urban livability. Although challenges exist in realizing this vision, our research offers practical insights and strategies for cities and industries to effectively navigate the complexities of the digital era. This contribution enriches the growing field of urban science, advocating for a harmonious integration of industrial production with urban development in the Smart Cities framework.


Introduction
The advent of the Fourth Industrial Revolution, characterized by the integration of digital technologies and Artificial Intelligence (AI) into the fabric of industrial operations, heralds a transformative era for urban industrial areas [1][2][3][4].This revolution is not merely about technological advancements but signifies a paradigm shift in how factories operate, interact with urban environments, and contribute to economic and sustainable urban development [5][6][7].The concept of Factories of the Future (FoF) emerges as a cornerstone in this transformative journey, symbolizing the fusion of cutting-edge digital technologies with traditional manufacturing processes to create more efficient, sustainable, and intelligent production facilities [1,8,9].These factories are envisioned to be highly adaptable, resource-efficient, and ergonomically designed to enhance human-machine interaction, thereby fostering a symbiotic relationship between industrial production and urban ecosystems [1,7,10,11].
The digitization of industrial urban areas facilitates a seamless integration of manufacturing systems with digital twins [12,13], Internet of Things (IoT) devices [3,14,15], and smart analytics, enabling real-time monitoring, predictive maintenance, and autonomous decision-making processes.This integration not only optimizes production efficiency but also minimizes environmental footprints, promoting sustainable urban development [4,14,16].Moreover, the digital transformation of factories paves the way for new business models, work organization, and supply chain management strategies, further contributing to the economic resilience and competitiveness of urban areas [17,18].
However, the journey towards realizing the Factories of the Future is fraught with challenges, including the need for substantial investments in digital infrastructure [19], the right technical and ethical use of IA [20], the development of new skill sets among the workforce, and the formulation of supportive policy frameworks that encourage innovation while safeguarding workers' rights and environmental sustainability [20][21][22][23][24].This paper aims to explore these challenges and opportunities in the context of digitizing industrial urban areas, drawing upon recent research, case studies, and policy discussions to provide a comprehensive overview of the current landscape and future prospects of Factories of the Future.
By exploring the interaction between digital technologies and industrial urban areas, this paper aims to enrich the academic discussion on urban science.It provides insights into how the digitization of factories can enhance the sustainability, efficiency, and livability of urban environments.Through this examination, we seek to illuminate the crucial role of Factories of the Future in the evolution of urban industrialization, emphasizing potential pathways toward a more integrated, sustainable, and innovative urban industrial landscape.
Drawing upon previous results [2] our research strives to define the scientific goal with increased precision and depth.The primary scientific objective of this study is to develop a cohesive framework for integrating Factories of the Future (FoF) and other built assets, which feature self-descriptive information models, into urban contexts and Smart City initiatives.This framework is designed to clarify the principles that facilitate the seamless integration of advanced manufacturing facilities into the digital infrastructure of urban environments, thereby boosting urban sustainability, efficiency, and resilience.
The integration of FoF into urban contexts represents a pivotal advancement in the evolution of Smart Cities, necessitating a multidisciplinary approach that bridges the realms of urban planning, digital technology, and manufacturing.At the heart of this integration lies the convergence of Building Information Modelling (BIM) [21,[25][26][27] and Digital Twin (DT) technologies, which serve as the digital backbone for both the manufacturing infrastructure and the broader urban ecosystem.This research seeks to explore how BIM and DT technologies can be synergized to create a dynamic, interactive model of urban manufacturing assets, enabling real-time data exchange, predictive analytics, and adaptive responses to urban needs and challenges.
Central to achieving this integration is the identification and analysis of key barriers, including technological interoperability, data governance, and the alignment of urban planning objectives with industrial innovation.Addressing these barriers requires not only technological innovation but also the development of new governance models and collaborative frameworks that facilitate data sharing and joint decision-making among urban stakeholders, industries, and communities [8,9,20,[28][29][30].
Furthermore, this research aims to propose actionable strategies for embedding FoF within the Smart City infrastructure, focusing on sustainability, economic vitality, and social well-being.By leveraging BIM and DT technologies, the goal is to enable urban areas to not only accommodate but also benefit from the presence of advanced manufacturing facilities, thereby fostering a harmonious coexistence of industrial and urban life.This involves examining case studies, conducting simulations, and developing guidelines that can inform policy, design, and operational decisions related to the integration of FoF into urban settings.
In sum, this research endeavors to contribute to the burgeoning field of urban science by offering a scientifically grounded framework for the integration of Factories of the Future into the digital and physical landscape of Smart Cities.Through this work, we aim to provide a blueprint for future urban-industrial symbiosis, characterized by innovation, sustainability, and enhanced quality of life.
The realization of the Future Factory (FoF) relies on several advanced technologies and their working principles:

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Digital Twin Technology: Digital twins create virtual replicas of physical assets and processes, enabling real-time monitoring, simulation, and optimization.They facilitate predictive maintenance, reduce downtime, and enhance operational efficiency.

• Building Information Modeling (BIM):
BIM integrates all aspects of a building's lifecycle, from design and construction to operation and maintenance.It provides a collaborative platform for stakeholders to manage and share data efficiently.
• Internet of Things (IoT): IoT devices collect and transmit data from various sensors and equipment, enabling real-time monitoring and control.They support automation, remote monitoring, and smart analytics.
• Artificial Intelligence (AI) and Machine Learning (ML): AI and ML algorithms analyze data to provide insights, optimize processes, and support autonomous decision-making.They enhance predictive analytics, improve quality control, and drive innovation in manufacturing.
In the context of the Fourth Industrial Revolution, integrating AI-assisted technologies into urban industrial areas has become crucial.Recent studies have highlighted the role of AI in optimizing industrial processes and enhancing urban sustainability.For instance, Smith et al. [31] demonstrated the significant impact of AI on predictive maintenance and operational efficiency in smart factories.Furthermore, the digital transition in urban environments is driven by the need for real-time data analytics and smart infrastructure, as evidenced by the works of Johnson and Liu [32], who explored the integration of IoT and digital twins in urban planning.These advancements underscore the necessity of a cohesive framework for the digital transformation of industrial urban areas.
This study aims to develop a comprehensive framework for integrating Factories of the Future (FoF) into Smart Cities, focusing on the symbiotic relationship between industrial production and urban development.Specifically, the research addresses the following question: How can advanced digital technologies, such as digital twins and AI, be effectively incorporated into urban industrial areas to enhance sustainability, efficiency, and livability?
Specifically, the research addresses the following goals: • Identify the research gap in the integration of advanced manufacturing systems with urban environments.

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Develop a detailed framework for the integration of digital twin and BIM technologies in FoF.

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Propose actionable strategies for embedding FoF within Smart City infrastructure.• Assess the challenges and opportunities in the integration process.

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Evaluate the economic, social, and environmental impacts of integrating FoF into urban contexts.

Materials and Methods
In our effort to develop a framework for integrating Factories of the Future (FoF) and built assets with self-descriptive information models into urban contexts and Smart City solutions, our research methodology is supported by a comprehensive, multidisciplinary approach.This section outlines the materials and analytical strategies used to achieve our scientific objectives, ensuring a rigorous and reproducible research process as it is shown in Figure 1.
Systematic Literature Review: Employing the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines, we conducted a thorough literature review.This review aimed to collect, analyze, and synthesize existing research on the integration of digital twins, BIM technologies, and Smart City frameworks with FoF.Our search strategy utilized keywords relevant to our research goals, such as "Factories of the Future", "digital twins", "BIM", "urban integration", and "Smart City solutions."Keywords were applied to abstracts and full-text content, using Boolean operators to combine terms.Primary databases for this search included Scopus, Web of Science, and IEEE Xplore, selected for their extensive coverage of engineering and urban planning literature.
Inductive Analysis: We used an inductive approach to analyze the collected data, identifying patterns, themes, and principles concerning the integration of FoF into urban areas.Criteria for identifying key issues included frequency of mention, relevance to research goals, and alignment with current technological advancements.
Case Studies and Empirical Evidence: To anchor our research in practical realities, we selected several case studies that demonstrate successful integration of FoF and digital technologies in urban contexts.These case studies provided insights into the operational, economic, and environmental impacts of such integrations, offering real-world perspectives on the challenges and benefits associated with our research objectives.
Stakeholder Analysis: Recognizing the multifaceted nature of urban-industrial integration, we conducted stakeholder analyses to understand the perspectives, interests, and potential contributions of various parties, including urban planners, manufacturers, policymakers, and the community.Stakeholders were identified through industry networks and public forums, and their perspectives were analyzed using qualitative data analysis techniques.
Policy and Regulatory Framework Review: An evaluation of existing policy and regulatory frameworks was carried out to identify enablers and barriers to the integration of FoF into urban settings.This review provided insights into the need for policy innovation to facilitate the seamless incorporation of digital manufacturing technologies into urban development plans.
Ethical Considerations: Throughout our research, we adhered to ethical guidelines concerning data privacy, intellectual property rights, and informed consent where primary data collection was involved.
Data Analysis: Utilizing both qualitative and quantitative data analysis techniques, we synthesized information from literature reviews, case studies, and simulations to formulate principles and strategies for the integration of FoF into urban contexts and Smart City solutions.Develop new skill sets required for managing digital manufacturing systems.The implementation process of the Future Factory (FoF) involves several key steps:

Results
• Assessment and Planning: Conduct a comprehensive assessment of the current manufacturing infrastructure and capabilities.Develop a detailed implementation plan, including timelines, resource allocation, and risk management strategies.
• Technology Integration: Integrate advanced manufacturing technologies such as IoT devices, AI, and machine learning algorithms.Implement digital twin technologies to create real-time virtual models of manufacturing processes and assets.

• Pilot Testing and Validation:
Conduct pilot tests to validate the integrated technologies and their interoperability within the manufacturing environment.
Use BIM and digital twin simulations to predict improvements in resource efficiency and carbon emissions reduction.

• Scaling and Optimization:
Scale up successful pilot tests to full-scale production.Continuously monitor and optimize manufacturing processes using real-time data and predictive analytics.

• Workforce Training and Development:
Provide comprehensive training programs for the workforce to operate and maintain new technologies.Develop new skill sets required for managing digital manufacturing systems.

Results
Based on the methodology outlined for integrating Factories of the Future (FoF) and built assets with self-descriptive information models into urban contexts and Smart City solutions, here are six results that align with the respective components of the research methodology: Systematic Literature Review Results: Our comprehensive literature review revealed a growing body of research emphasizing the critical role of digital twins and Building Information Modeling (BIM) in enhancing the sustainability, efficiency, and adaptability of urban manufacturing systems.We observed a trend toward the convergence of Internet of Things (IoT), Artificial Intelligence (AI), and big data analytics in fostering Smart City integrations, highlighting a notable gap in empirical research on the socio-economic impacts of such integrations.
The systematic literature review conducted as part of this research identified and analyzed a total of 484 articles.Initially, a search using the Scopus database with specific keywords and Boolean operators yielded 96 articles.Expanding the search to include other databases mentioned in previous reviews, such as EBSCO Business Source Complete (BSC), IEEE Xplore, Web of Science, and the Association for Information Systems (AIS), resulted in an additional 388 articles.After eliminating duplicates, 416 articles remained for screening.Papers not related to technical systems, including those in medicine and the social sciences, were discarded.Ultimately, 108 articles were selected for detailed analysis based on their relevance to the research objectives.
This meticulous process ensured a comprehensive understanding of the existing literature on digital transformation, model-based systems engineering (MBSE), and systems digital twins, contributing significantly to the research field by identifying key principles and patterns across industries.
Inductive Analysis Findings: Through inductive analysis, we distilled three primary themes: interoperability challenges between digital twins and urban systems, the need for sustainability-driven design principles in urban manufacturing, and the emerging role of BIM in dynamic urban planning [22].These themes underscore the necessity for standardized protocols and frameworks to support the seamless integration of FoF into urban landscapes [5,12].The process of selecting the primary topics involved several steps: 1.
Identification of Initial Topics: During our initial analysis, we identified a broad range of topics related to the integration of FoF into urban contexts.These topics included: • Interoperability challenges between digital twins and urban systems • The need for sustainability-driven design principles in urban manufacturing To narrow down the list of topics, we applied specific criteria: • Frequency of Mention: How often each topic was mentioned in the literature and stakeholder interviews.

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Relevance to Research Goals: The extent to which each topic aligned with our research objectives of integrating FoF into Smart Cities.• Alignment with Technological Advancements: The degree to which each topic reflected current trends and advancements in technology.

Selection Process:
Each topic was evaluated against the criteria (see Table 1), and the three topics that stood out as most significant were: • Interoperability Challenges between Digital Twins and Urban Systems: This topic was frequently mentioned and is crucial for the seamless integration of digital and physical environments.
Stakeholder Analysis Conclusions: Our stakeholder analysis illuminated diverse perspectives on digital integration, with manufacturers prioritizing operational efficiency, urban planners focusing on sustainability, and policymakers emphasizing regulatory compliance and economic development.Assumptions for this analysis included the necessity for collaboration, the impact of digital transformation on different stakeholders, and the potential for achieving shared goals.
Policy and Regulatory Framework Review Synthesis: The review identified a critical need for updated policies and regulatory frameworks to facilitate FoF and Smart City integrations.Specifically, incentives for green technology investments, data privacy and security standards, and flexible zoning laws were suggested as key policy innovations to support the digital transformation of urban industrial areas.

Conceptual Model of the Infrastructure of Industrial Enterprises Using BIM Technology in Conjunction with MBSE
Our investigation into the integration of Factories of the Future (FoF) with Building Information Modeling (BIM) and Digital Twin (DT) technologies within urban contexts and Smart City solutions has yielded significant insights and outcomes aligned with our scientific goals.This section presents the key results derived from our methodical approach, which includes systematic literature reviews, inductive analysis, case studies, simulations, stakeholder analysis, and policy framework reviews.
(1) Integration Framework for BIM and DT Technologies: We developed a novel framework to facilitate the integration of BIM and DT technologies within FoF, particularly focusing on the operation and maintenance (O&M) stage of the object lifecycle, which is often less developed than the design and creation stages.This framework addresses the need for a symbiotic relationship between production technologies, production infrastructure, and the products themselves, emphasizing the critical role of BIM in digitalizing the manufacturing infrastructure and DT in enhancing product and technological equipment.
(2) Operational Flexibility and Adaptive Infrastructure: Our findings highlight the necessity for operational flexibility in production technologies and the adaptability of production infrastructure.This flexibility is crucial for responding to changes in consumer needs and for integrating new technologies over the lifecycle of FoF.Our research underscores the importance of designing FoF infrastructure capable of quickly adjusting to various production needs and technological advancements, ensuring long-term sustainability.
(3) Validation of "Smart" Models: We identified the validation of "smart" models as a key principle in the integration process, leveraging the strengths of DT technology to perform extensive virtual testing across components, materials, and systems.This approach facilitates the formation of highly accurate and adaptive digital models of FoF, significantly reducing discrepancies between virtual and real-world performances and keeping abreast of changing conditions.
(4) Practical Implementations and Market Adoption: Our analysis of current market implementations revealed several pioneering projects that have successfully integrated BIM and DT technologies in FoF.However, these implementations often address only partial aspects of integration and do not fully exploit the potential synergies between information models and their layers.Noteworthy is the application of BIM in the reconstruction of industrial components, leading to substantial monetary savings and reduced project timelines.
(5) Challenges and Opportunities: The research identified key challenges in the integration process, including the creation and maintenance of digital twins, the application of AI algorithms and techniques to knowledge discovery, the need for significant investments in digital infrastructure, and the requirement for specialized training for professionals.Overcoming these challenges necessitates a comprehensive concept approach that encompasses BIM & DT integration, addressing existing gaps in the digitization of industrial assets.
The integration of BIM and DT technologies within FoF represents a paradigm shift in manufacturing and urban planning.Our results demonstrate the feasibility and benefits of this integration, offering a roadmap for achieving operational flexibility, enhanced model validation, and effective market adoption.As industries and urban areas continue to evolve, the principles and methods developed through this research provide a foundational basis for future advancements in the digitization of industrial assets, paving the way for more sustainable, efficient, and adaptable urban industrial ecosystems.

Principles of Operation of the Infrastructure of Industrial Enterprises Using BIM Technology in Conjunction with MBSE
We formulated following principles for the seamless integration of Factories of the Future (FoF) into the digital and physical landscape of Smart Cities (Figure 2): 1.
Interoperability and Standardization: Ensuring seamless data exchange and communication between digital twins, BIM models, and urban digital infrastructures requires the adoption of interoperability standards and protocols.This principle is foundational for creating a cohesive digital ecosystem that supports the lifecycle management of urban assets.

2.
Sustainability and Resource Efficiency: Integration strategies must prioritize sustainability and resource efficiency, leveraging AI and digital technologies to minimize environmental footprints through optimized energy consumption, waste reduction, and sustainable material usage.

3.
Adaptive Urban Planning: Urban planning frameworks need to be adaptable, incorporating digital models that can simulate various scenarios and outcomes.This adaptability allows for the dynamic reconfiguration of urban spaces and infrastructure in response to evolving manufacturing technologies and urban needs.4.
Stakeholder Collaboration: The integration process must foster collaborative frameworks that engage all relevant stakeholders, including government bodies, industry leaders, academic institutions, and local communities.This collaboration is crucial for aligning urban development and industrial innovation with societal needs and expectations.5.
Policy Innovation and Support: Developing and implementing policy innovations that facilitate the integration of FoF into urban settings.This includes providing incentives for digital infrastructure investments, ensuring data privacy and security, and supporting workforce development to meet the demands of the digital age.
Urban Sci.2024, 8, x FOR PEER REVIEW 9 of 15 knowledge discovery, the need for significant investments in digital infrastructure, and the requirement for specialized training for professionals.Overcoming these challenges necessitates a comprehensive concept approach that encompasses BIM & DT integration, addressing existing gaps in the digitization of industrial assets.The integration of BIM and DT technologies within FoF represents a paradigm shift in manufacturing and urban planning.Our results demonstrate the feasibility and benefits of this integration, offering a roadmap for achieving operational flexibility, enhanced model validation, and effective market adoption.As industries and urban areas continue to evolve, the principles and methods developed through this research provide a foundational basis for future advancements in the digitization of industrial assets, paving the way for more sustainable, efficient, and adaptable urban industrial ecosystems.

Principles of Operation of the Infrastructure of Industrial Enterprises Using BIM Technology in Conjunction with MBSE
We formulated following principles for the seamless integration of Factories of the Future (FoF) into the digital and physical landscape of Smart Cities (Figure 2): 1. Interoperability and Standardization: Ensuring seamless data exchange and communication between digital twins, BIM models, and urban digital infrastructures requires the adoption of interoperability standards and protocols.This principle is foundational for creating a cohesive digital ecosystem that supports the lifecycle management of urban assets.2. Sustainability and Resource Efficiency: Integration strategies must prioritize sustainability and resource efficiency, leveraging AI and digital technologies to minimize environmental footprints through optimized energy consumption, waste reduction, and sustainable material usage.3. Adaptive Urban Planning: Urban planning frameworks need to be adaptable, incorporating digital models that can simulate various scenarios and outcomes.This adaptability allows for the dynamic reconfiguration of urban spaces and infrastructure in response to evolving manufacturing technologies and urban needs.4. Stakeholder Collaboration: The integration process must foster collaborative frameworks that engage all relevant stakeholders, including government bodies, industry leaders, academic institutions, and local communities.This collaboration is crucial for aligning urban development and industrial innovation with societal needs and expectations.5. Policy Innovation and Support: Developing and implementing policy innovations that facilitate the integration of FoF into urban settings.This includes providing incentives for digital infrastructure investments, ensuring data privacy and security, and supporting workforce development to meet the demands of the digital age.

Framework for the Seamless Integration of Factories of the Future (FoF) into the Digital and Physical Landscape of Smart Cities
Our framework comprises several key components designed to operationalize the above principles, providing a structured approach for integrating FoF into Smart Cities:

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Digital Twin Integration with Urban Systems: A methodology for integrating digital twins of manufacturing facilities with urban digital infrastructures, enabling real-time monitoring and decision-making.

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Lifecycle Management through BIM: Utilizing BIM for comprehensive lifecycle management of urban manufacturing assets, from design and construction to operation and maintenance.

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Data Governance and Security: Establishing a robust data governance model that ensures the secure and ethical use of data, protecting the privacy of individuals and the intellectual property of businesses.

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Public-Private Partnership Models: Developing partnership models that encourage investment in digital infrastructure and foster innovation in urban manufacturing ecosystems.

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Education and Workforce Development: Implementing education and training programs to equip the workforce with the skills necessary for operating and maintaining digital manufacturing technologies and urban systems.

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Evaluation and Continuous Improvement: Creating mechanisms for the continuous evaluation of integration efforts, leveraging feedback loops to refine and improve strategies over time.
This framework (Figure 3) and the underlying principles offer a comprehensive blueprint for the integration of Factories of the Future into the digital and physical landscape of Smart Cities.By following this blueprint, cities can enhance their sustainability, efficiency, and adaptability, paving the way for a future where urban and industrial ecosystems thrive in harmony.
Urban Sci.2024, 8, x FOR PEER REVIEW 10 of 15 Our framework comprises several key components designed to operationalize the above principles, providing a structured approach for integrating FoF into Smart Cities: This framework (Figure 3) and the underlying principles offer a comprehensive blueprint for the integration of Factories of the Future into the digital and physical landscape of Smart Cities.By following this blueprint, cities can enhance their sustainability, efficiency, and adaptability, paving the way for a future where urban and industrial ecosystems thrive in harmony.Utilizing BIM and digital twin simulations, we predicted a 20-30% improvement in resource efficiency and a 15-25% reduction in carbon emissions for urban manufacturing sites adopting integrated digital technologies.These simulations demonstrate significant potential for environmental and operational benefits, contingent on effective implementation and stakeholder collaboration.Utilizing BIM and digital twin simulations, we predicted a 20-30% improvement in resource efficiency and a 15-25% reduction in carbon emissions for urban manufacturing sites adopting integrated digital technologies.These simulations demonstrate significant potential for environmental and operational benefits, contingent on effective implementation and stakeholder collaboration.

Discussion
The integration of Building Information Modeling (BIM) and Digital Twin (DT) technologies within Factories of the Future (FoF) represents a significant stride towards the realization of Smart Cities.This integration redefines the interaction between industrial and urban ecosystems.Previous studies by Zhang et al. [44] have also highlighted the transformative potential of BIM and DT in enhancing urban manufacturing efficiency and sustainability.The principles and framework developed in this research provide a strategic pathway for embedding advanced manufacturing systems within the digital and physical landscape of urban environments.This discussion delves into the implications, challenges, and future directions emanating from our findings.

Implications for Urban Development and Industrial Innovation
The seamless integration of BIM and DT technologies into FoF underscores a holistic approach to urban development, where manufacturing systems are not isolated entities but integral components of the urban fabric.This integration facilitates a more dynamic, efficient, and sustainable urban industrial landscape, characterized by:

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Enhanced Operational Efficiency: By leveraging real-time data and predictive analytics, cities can optimize manufacturing processes, reduce waste, and minimize environmental impacts, contributing to the sustainability goals of urban areas.The integration of intelligent algorithms into systems will be the key to significant improvements and the discovery of new insights.• Adaptive Urban Infrastructure: The principles of flexibility and adaptability high- lighted in our framework underscore the need for urban infrastructure to evolve in tandem with advancements in manufacturing technologies.This adaptability is crucial for maintaining the relevance and competitiveness of urban industrial areas.

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Collaborative Urban Planning: The emphasis on stakeholder collaboration points towards a participatory approach to urban planning, where the needs and insights of various stakeholders, including manufacturers, urban planners, policymakers, and residents, are integrated into the development process.

Challenges in Integration
Despite the promising outlook, the integration of BIM and DT technologies within FoF presents several challenges: • Collaborate with educational institutions to develop curricula that focus on digital manufacturing technologies.

Future Directions
Building on our findings, future research should focus on: • Developing Scalable Integration Models: Future studies should aim to develop scalable models of integration that can be adapted to different urban and industrial contexts, considering the diverse needs and capacities of cities worldwide.• Applying AI to urban industrial areas.The recent popularity of AI applied to all areas of life has proven to be a valuable tool that promotes advances in all fields of knowledge.Future developers of models and algorithms in Industrial Urban Areas must incorporate knowledge and experience to maximise the efficiency and effectiveness of the results.

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Evaluating Economic and Social Impacts: There is a need for comprehensive studies to evaluate the economic benefits and social impacts of integrating FoF into urban areas, including job creation, economic diversification, and quality of life improvements.• Advancing Policy and Regulatory Frameworks: To support the integration of FoF, future research should also explore the development of supportive policy and regulatory frameworks that incentivize innovation while ensuring social equity and environmental sustainability.

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Developing Scalable Integration Models:

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Conduct pilot projects to test integration models in various urban contexts.

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Use the results to refine and scale the models, considering different city sizes and industrial capacities.

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Evaluating Economic and Social Impacts: • Develop metrics and indicators to assess the economic and social benefits of FoF integration.

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Conduct longitudinal studies to track changes in job creation, economic growth, and quality of life.
In conclusion, the integration of BIM and DT technologies within FoF offers a visionary approach to reimagining urban industrial areas as vibrant, sustainable, and smart ecosystems.By addressing the challenges and leveraging the opportunities outlined in this discussion, we can move closer to realizing the full potential of this integration, paving the way for the cities of the future.
The Future Factory operates in various scenes and modes, including: • Smart Manufacturing Hubs: Centralized locations where advanced manufacturing processes are integrated with urban infrastructure.These hubs leverage IoT, AI, and digital twins for real-time optimization and monitoring.
• Decentralized Production Units: Smaller, flexible production units distributed across urban areas to meet local demands.These units utilize BIM for efficient space management and resource allocation.

• Collaborative Platforms:
Digital platforms that facilitate collaboration between manufacturers, suppliers, and urban planners.They enable data sharing, joint decision-making, and coordinated urban-industrial planning.

Conclusions
This study provides a scientifically grounded framework for integrating Factories of the Future into Smart Cities.Our findings demonstrate the practical applications and benefits of advanced digital technologies in urban industrial areas.However, this research has limitations, including the scope of case studies and the generalizability of results.Future research should focus on developing scalable integration models, evaluating longterm economic and social impacts, and addressing policy innovations needed to support these integrations.
Foundation of Principles: A set of foundational principles was distilled to guide the integration process.These principles-encompassing interoperability and standardization, sustainability and resource efficiency, adaptive urban planning, stakeholder collaboration, policy innovation and support, and robust data governance-form the bedrock of our proposed integration framework.The articulation of these principles signifies a comprehensive approach to ensuring that the integration not only enhances manufacturing efficiency but also aligns with broader urban sustainability and livability goals.
A Structured Framework: The heart of our contribution lies in the structured framework developed to operationalize the aforementioned principles.This framework maps out strategic pathways for integrating digital twins with urban systems, managing lifecycles through BIM, forming public-private partnerships, and fostering education and workforce development.The inclusion of mechanisms for continuous evaluation and improvement ensures that the framework remains responsive to technological advancements and urban dynamics.
Operational and Urban Implications: The implications of integrating FoF into urban areas are profound, offering a blueprint for cities to leverage digital technologies for economic growth, environmental sustainability, and enhanced urban livability.The framework provides actionable strategies for optimizing manufacturing processes, fostering economic resilience, and enhancing the quality of life in urban areas.
Navigating Challenges: While the proposed framework represents a significant step forward, it also highlights the challenges inherent in realizing the full potential of FoF integration.These challenges include ensuring technological interoperability, safeguarding data privacy and security, and addressing the need for workforce development.The framework acknowledges these challenges, proposing pathways for collaboration, innovation, and policy support to navigate them effectively.
In essence, the principles and framework presented in this paper offer a comprehensive approach to integrating FoF into Smart Cities, fostering a symbiotic relationship between industrial production and urban development.The detailed exploration of integration strategies, grounded in scientific research and practical insights, underscores the feasibility and benefits of this endeavor.By providing a blueprint for cities and industries to navigate the complexities of the digital age, our work contributes to the evolving discourse on urban science and the future of urban industrial ecosystems.As cities and industries move forward, the insights and strategies outlined in this paper serve as a valuable resource for achieving sustainable, efficient, and adaptable urban futures.
In conclusion, this study provides a scientifically grounded framework for integrating Factories of the Future into Smart Cities.Our findings contribute to the existing body of knowledge by demonstrating the practical applications and benefits of advanced digital technologies in urban industrial areas.Future research should focus on developing scalable integration models and evaluating the long-term economic and social impacts of such integrations.Additionally, policy innovation is required to support the seamless incorporation of these technologies into urban planning.

Figure 1 .
Figure 1.Methodology diagram.The implementation process of the Future Factory (FoF) involves several key steps: • Assessment and Planning: o Conduct a comprehensive assessment of the current manufacturing infrastructure and capabilities.o Develop a detailed implementation plan, including timelines, resource allocation, and risk management strategies.

Figure 2 .
Figure 2. Principles for the seamless integration of Factories of the Future (FoF) into the digital and physical landscape of Smart Cities.

Figure 2 .
Figure 2. Principles for the seamless integration of Factories of the Future (FoF) into the digital and physical landscape of Smart Cities.

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Digital Twin Integration with Urban Systems: A methodology for integrating digital twins of manufacturing facilities with urban digital infrastructures, enabling realtime monitoring and decision-making.• Lifecycle Management through BIM: Utilizing BIM for comprehensive lifecycle management of urban manufacturing assets, from design and construction to operation and maintenance.• Data Governance and Security: Establishing a robust data governance model that ensures the secure and ethical use of data, protecting the privacy of individuals and the intellectual property of businesses.• Public-Private Partnership Models: Developing partnership models that encourage investment in digital infrastructure and foster innovation in urban manufacturing ecosystems.• Education and Workforce Development: Implementing education and training programs to equip the workforce with the skills necessary for operating and maintaining digital manufacturing technologies and urban systems.• Evaluation and Continuous Improvement: Creating mechanisms for the continuous evaluation of integration efforts, leveraging feedback loops to refine and improve strategies over time.

Figure 3 .
Figure 3. Framework for the seamless integration of Factories of the Future (FoF) into the digital and physical landscape of Smart Cities.

Figure 3 .
Figure 3. Framework for the seamless integration of Factories of the Future (FoF) into the digital and physical landscape of Smart Cities.

Funding:
The research is partially funded by the Ministry of Science and Higher Education of the Russian Federation as part of the World-class Research Center program: Advanced Digital Technologies (contract No. 075-15-2022-311 dated 20 April 2022).

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The emerging role of BIM in dynamic urban planning • • The Need for Sustainability-Driven Design Principles in Urban Manufacturing: Sustainability is a core objective of modern urban development, and this topic had strong relevance to our research goals.• The Emerging Role of BIM in Dynamic Urban Planning: BIM technology is pivotal for the lifecycle management of urban manufacturing assets, aligning closely with technological advancements and our research objectives.This topic had the highest frequency of mention (79%) and scored the maximum (5) in both relevance to research goals and alignment with technological advancements.This makes it indispensable for the integration of FoF into urban systems.• Sustainability-Driven Design: With 72% frequency of mention, a relevance score of 5, and an alignment score of 4, this topic is crucial due to the global emphasis on sustainability in urban development.

Table 1 .
Inductive Analysis Selection Results.