Framework, symbol and terms: questions and answers

The lotus has three layers: Lean is the base (lower petals, giving stability through method, flow and improvement), Digital is the impulse (middle petals, bringing data, connectivity and automation), and Green is the purpose (central petal, pointing to resource stewardship and circular flows). The petals reinforce one another and are a reading of the symbol, not an implementation sequence.

Also asked as: Why a lotus? · What do the three petal layers represent? · ¿Qué significa el logotipo de Digital Green Lean?

Sources: Lean is the base. Digital, the impulse. Green, the purpose. · A distinct contribution. One integrated form.

All petals emerge from a common point, using axes at 0°, 30° and 60° and circular arcs. Bronze, old gold and champagne distinguish the three layers; ivory gives space and greens connect the identity to the website. The identity continues the lotus associated with Excellence UAE, with clearer geometry.

Also asked as: How was the DGL symbol constructed? · ¿Qué colores tiene el logo de DGL?

Sources: Shared origin. Consistent rhythm. · One origin. Three connected ambitions.

At the centre are Digital Green Lean systems and subsystems. Around them, the doctoral framework connects cultural characteristics with leadership competences: operational excellence, customer focus, values and principles, personal development and Lean performance. The relationships between these areas matter as the organisation builds new capabilities.

Also asked as: What is at the centre of the framework? · ¿Cuál es el marco de trabajo DGL?

Sources: The Digital Green Lean framework

Materials and information move through suppliers, the production system and customers. Digital technology informs decisions along that route, and circularity brings products and materials back into use. Culture, people and leadership support the choices made throughout the flow.

Also asked as: How do materials and information move in DGL? · ¿Qué es el flujo operativo DGL?

Sources: Operational flow

Lean + Digital: more responsive decisions meet stable standards. Lean + Green: waste reduction meets variability from circular flows. Digital + Green: data makes resource use visible, while circular choices still demand operational judgement. All three together: DGL examines the operating system, culture and leadership needed to navigate their combined demands.

Also asked as: How do the pairs of the three agendas interact? · ¿Qué revelan las combinaciones de Lean, Digital y Green?

Sources: All three together

The doctoral defence presents a triple-layer architecture: external pressures, organisational capabilities and managerial choices meet in the same transformation. Each theory answers a different question, the levels interact, and tension management remains necessary across all three.

Also asked as: What is the triple-layer theoretical architecture? · ¿Cuáles son los tres niveles de explicación?

Sources: Three levels of explanation

Lean grew from Toyota's response to resource scarcity in post-war Japan and reached a global audience through Womack and colleagues in 1990. It connects customer value, flow and waste reduction through Just in Time, jidoka and scientific problem solving. Standard work provides a baseline for improvement, and respect for people treats operators as problem solvers.

Also asked as: What is the Lean foundation in DGL? · ¿De dónde viene Lean?

Sources: Lean Manufacturing

Industry 4.0 emerged from Germany's industrial competitiveness agenda in the early twenty-first century. It connects physical production with software through cyber-physical systems, sensors and industrial networks, with analytics and AI supporting monitoring and adaptive decisions, and digital twins testing changes. Integration depends on interoperability, data quality, cybersecurity and the people interpreting automated outputs.

Also asked as: What is the digital foundation in DGL? · ¿De dónde viene la Industria 4.0?

Sources: Industry 4.0

Circular Economy draws on ecological economics, industrial ecology and systems thinking developed since the 1960s and 1970s. It challenges linear extraction, production and disposal by maintaining product and material value through durability, repair, reuse, remanufacturing and recovery, and extends analysis beyond the factory to suppliers, users and reverse logistics. A circular option must be tested against its operational and environmental consequences, not assumed better everywhere.

Also asked as: What is the green foundation in DGL? · ¿De dónde viene la economía circular?

Sources: Circular Economy

No. DGL is not a bundle of three separate services: culture, leadership and the management of persistent tensions are central to making Lean, Industry 4.0 and Circular Economy work together.

Also asked as: Is DGL a bundle of Lean, digital and sustainability? · ¿Es DGL un paquete de tres servicios?

Sources: Helping businesses put Digital Green Lean into practice

The DGL website describes Industry 5.0 as a future direction: the aspiration is to use DGL in ways that strengthen the role of people, sustainability and resilience alongside technology. It is not a fourth component of the original Digital Green Lean framework.

Also asked as: Is Industry 5.0 a fourth component of DGL? · ¿Es la Industria 5.0 un cuarto componente de DGL?

Sources: Helping businesses put Digital Green Lean into practice · How does DGL relate to Industry 5.0?

The consultancy practice began in 2013 with Excellence UAE, focused on strategy, Operational Excellence and business transformation. In 2023–2024 Gatell and Avella introduced Digital Green Lean in their first scientific publication, followed by the maturity model. The doctoral thesis was defended in 2026 and the current DGL practice builds on it.

Also asked as: When did DGL begin? · ¿Cuál es el origen de la práctica DGL?

Sources: After the thesis · Digital Green Lean

Technology, Circular Economy and Lean Manufacturing change the same processes, people and resources, and managing them separately can create conflicting priorities. DGL connects the decisions and helps leaders manage the competing demands, which remain valid at the same time.

Also asked as: What problem does DGL solve? · ¿Por qué hace falta DGL?

Sources: The Need

The website describes the four tensions as not problems to solve once but conditions leaders need to manage as priorities shift. They do not promise a permanent resolution and must be navigated in each particular context.

Also asked as: Why are the tensions not solved once? · ¿Son las tensiones problemas que se resuelven una vez?

Sources: Integration makes the tensions visible · Operational tensions

It assesses the culture and leadership conditions that support integrating Lean Manufacturing, Industry 4.0 and Circular Economy, drawing on the DGL maturity model and interpreting the result in your organisational context. The engagement combines the agreed instrument with discussion of findings: strengths, gaps and tensions, then practical priorities for leadership and organisation.

Also asked as: What is assessed in the readiness assessment? · ¿Qué es la evaluación de preparación en cultura y liderazgo?

Sources: Culture and Leadership Readiness Assessment

It reviews the operational, technological and Circular Economy dimensions of a defined business challenge, bringing together the relevant evidence and expertise to identify opportunities, dependencies and implementation priorities. The scope may include performance and flow, technology and data readiness, material and resource use, and the culture and leadership conditions for change; areas are agreed before work begins.

Also asked as: What does the integrated assessment cover? · ¿Qué es la evaluación integrada y hoja de ruta?

Sources: Integrated Business Assessment and Roadmap

A possible engagement has four steps: agree the scope, sites and decisions; gather evidence and perspectives across leadership and plant teams; discuss the profile and identify capability gaps in context; develop an improvement roadmap and agree how progress will be reviewed. The exact protocol and comparison basis are agreed for each engagement.

Also asked as: How does an assessment engagement work? · ¿Cuáles son los pasos de una evaluación?

Sources: A possible assessment engagement

The Excel assessment annexes of the published maturity model are available on request through the contact form on digitalgreenlean.com; they are not a public download. For a first view of your organisation, the free online DGL self-assessment rates the 29 subdimensions of the model, shows your profile by dimension and lets you request a full report reviewed by Dr. Ignacio S. Gatell.

Also asked as: Can I download the DGL assessment annexes? · ¿Puedo descargar el Excel de evaluación DGL?

Sources: Culture and Leadership Readiness Assessment

Understand: build shared language and skills for leaders and teams. Assess: get an expert-guided view through a culture and leadership assessment or a broader business assessment. Act: turn findings into priorities, responsibilities and a practical roadmap, reviewing progress as the organisation tests and scales changes.

Also asked as: How does DGL move from insight to action? · ¿Cómo pasa DGL de la comprensión a la acción?

Sources: Shape an implementation roadmap

You may need to improve throughput, evaluate an automation or AI investment, introduce recovered materials or align several transformation programmes. You may already have a proposal and want an experienced perspective before committing resources. Bring the decision, its business context and the constraints.

Also asked as: Can I bring a decision I have already made? · ¿Con qué problemas puedo acudir?

Sources: Starting with a real problem · Start with the decision in front of you

DGL treats innovation as a capability of the operating system, its culture, routines and leadership, not a separate department. Five channels carry it into daily operations: process innovation through Kaizen Teian, process innovation through Kaizen Blitz, product innovation, open innovation and crowdsourcing, and digital transformation. Each has a different rhythm and involves different people.

Also asked as: How does DGL treat innovation? · ¿Cuáles son los canales de innovación?

Sources: Process innovation · Kaizen Teian

Kaizen Teian is improvement proposed from the shop floor through the suggestion system: continuous and involving everyone. Operators surface problems and ideas in their own work and management evaluates them with visible follow-up. The value comes from the volume and constancy of small steps, supported by standard work and respect for people.

Also asked as: How does a suggestion system work in DGL? · ¿Qué es Kaizen Teian?

Sources: Process innovation · Kaizen Teian

Yes. The five channels meet the same four operational tensions: more ideas, faster events and richer data can strain stable standards, flow and the capabilities of the people who must act on them. Innovation, too, is navigated rather than installed.

Also asked as: Can too many ideas strain standard work? · ¿Las tensiones afectan a la innovación?

Sources: Process innovation · Kaizen Teian

Use the shared contact form on the DGL website, where you can choose the recipient: Digital Green Lean general enquiries, Engage with us for business and implementation support, or Dr. Gatell for leadership, speaking and research. The form sends your message to contact@DigitalGreenLean.com, and you can also connect with Dr. Gatell on LinkedIn.

Also asked as: Where can I send an enquiry? · ¿Cómo contacto con DGL? · What are the recipients in the contact form?

Sources: Let’s discuss your challenge

DGL helps businesses integrate Industry 4.0 and digital transformation, sustainability and circularity, and Lean Manufacturing and operational excellence, to reach higher levels of efficiency and productivity. Together with the client it defines the business challenge, examines the evidence and agrees priorities, responsibilities and next steps.

Also asked as: What is the DGL offering in one sentence? · ¿Qué ofrece DGL?

Sources: Helping businesses put Digital Green Lean into practice · Helping businesses put Digital Green Lean into practice

Yes. Learning and capability development is one of the six ways of working. It starts with a learning needs analysis, connects training with improvement projects and follow-up, and builds shared language and practical skills for leaders and teams working across Lean, digital technology and circularity.

Also asked as: Can you train my leaders in DGL? · ¿Ofrece DGL formación?

Sources: Technology Assessment and Integration · Can training alone deliver DGL transformation?

DGL evaluates Industry 4.0, AI and advanced technologies against a defined business need, examining operational fit, data, skills and expected value before deciding what to adopt and how to integrate it. Operations and IT take part, with constraints, data and joint review of alternatives.

Also asked as: Can DGL evaluate an AI investment? · ¿Cómo evalúa DGL la tecnología y la IA?

Sources: Technology Assessment and Integration (cont.) · Does technology advisory start with selecting a tool?

The publications are: the concept paper (European Research on Management and Business Economics, 30(1), 100232, 2024); the maturity model (Total Quality Management & Business Excellence, 35(7–8), 860–897, 2024); the doctoral thesis (University of Oviedo, 2026); the doctoral defence presentation (25 June 2026); and a paper under review on institutional context and circular economy capability development.

Also asked as: List the DGL publications · ¿Qué publicaciones respaldan DGL?

Sources: Impact of Industry 4.0 and Circular Economy on Lean culture and leadership: Assessing Digital Green Lean as a new concept

The thesis is titled 'Integrating Lean Manufacturing, Industry 4.0, and Circular Economy: A Digital Green Lean Framework for Culture and Leadership Transformation in Process Manufacturing', by Ignacio Sánchez Gatell, University of Oviedo, 2026, supervised by Dr. Lucía Avella.

Also asked as: What is the thesis called? · ¿Cuál es el título de la tesis?

Sources: Integrating Lean Manufacturing, Industry 4.0, and Circular Economy: A Digital Green Lean Framework for Culture and Leadership Transformation in Process Manufacturing

The doctoral defence presentation, 'Digital Green Lean: the doctoral defence', is dated 25 June 2026 at the University of Oviedo and is available as a PDF on the research page of the DGL website. It is a visual introduction to the research, framework and tensions, and a useful starting point before reading the complete thesis.

Also asked as: Where can I see the defence presentation? · ¿Cuándo fue la defensa de la tesis?

Sources: Digital Green Lean: the doctoral defence

'Different Paths, Shared Destination: How Institutional Context Shapes Circular Economy Capability Development in Lean Manufacturing', by Gatell and Avella, is research in progress under review. Its full text will be available after publication. The case study chapter of the thesis presents the same study.

Also asked as: What is 'Different Paths, Shared Destination'? · ¿Hay un artículo en revisión sobre contexto institucional?

Sources: Different Paths, Shared Destination: How Institutional Context Shapes Circular Economy Capability Development in Lean Manufacturing · Doctoral thesis — Digital Green Lean (2026) · PDF page 164

Yes. The reference library lists twenty selected readings from the bibliography of the thesis, independent research supporting the foundations of DGL. Each connects to a practical question about integration, people, circularity or assessment, with links to publisher pages or repositories; full-text access depends on the publication.

Also asked as: What independent research supports DGL? · ¿Hay lecturas recomendadas de otros investigadores?

Sources: Who cites Digital Green Lean, and related research