To avoid energy scarcity as well as climate change, a transition towards a sustainable society must be initiated. Within this context, governmental bodies and/or companies often note sustainability as an end goal, for instance as a green circular economy. However, if sustainability cannot be clearly defined as an end goal or measured uniformly and transparently, then the direction and progress towards this goal can only be roughly followed. A clear understanding of and a transparent, uniform measuring technique for sustainability are hence required for sustainable and circular (renewable) energy production pathways (REPPs), as society is asking for an integrated and understandable overview of the decision-making and planning process towards a future sustainable energy system. Therefore, within this dissertation, a new approach is proposed for measuring and optimizing the sustainability of REPPs; it is useful for the analysis, comparison, and optimization of REPP systems on all elements of sustainability. The new approach is applied and tested on a case based on farm-scale, anaerobic digestion (AD), biogas production pathways.
LINK
Author supplied: In a production environment where different products are being made in parallel, the path planning for every product can be different. The model proposed in this paper is based on a production environment where the production machines are placed in a grid. A software entity, called product agent, is responsible for the manufacturing of a single product. The product agent will plan a path along the production machines needed for that specific product. In this paper, an optimization is proposed that will reduce the amount of transport between the production machines. The effect of two factors that influence the possibilities for reductions is shown in a simulation, using the proposed optimization scheme. These two factors are the redundancy of production steps in the grid and the
DOCUMENT
Het hanteren en beheersen van specifieke productieprocessen heeft een positief effect op de efficiëntie waarmee bedrijven hun productie voeren en daarmee ook op hun concurrentiepositie. Dit geldt tevens voor de automobielindustrie en hun toeleveranciers. In diverse onderzoeken rondom het toepassen van productieproces optimalisatie is gekeken wat de effecten kunnen zijn voor specifieke bedrijven en wat dit voor het bedrijf betekent bij invoer van de voorgestelde optimalisatiestappen. Fontys Hogescholen nam deel aan een aantal projecten rondom dit thema. Dit artikel geeft een idee wat diverse productieprocessen inhouden en wat de effecten kunnen zijn voor grotere productiebedrijven. Het is geen verrassing dat het meest toonaangevende productie systeem afkomstig is van een wereldspeler op het gebied van automobiel productie, namelijk Toyota. Het door Toyota in de jaren ontwikkelde en constant verbeterde productie systeem is bekend geworden onder de naam TPS: Toyota Production System. De kern van de TPS is verwijdering van verspilling en absolute concentratie op consistent hoge kwaliteit door een proces van continue verbetering, Kaizen. Dit is een filosofie die er op gericht is om alles wat geen meerwaarde oplevert voor het bedrijf en waar de klant niet voor betaald te elimineren. Maar met de installatie van TPS, is het echte werk van de TPS pas begonnen. In de 'Toyota Way' zijn het de mensen die het systeem van werken, communiceren, problemen oplossen en groeien samen tot leven brengen. De 'Toyota Way' stimuleert, ondersteunt en vraagt in feite om betrokkenheid van alle betrokken werknemers. De 'Toyota Way' is ook lange termijn denken. De focus van de top van het bedrijf is het toevoegen van waarde aan klanten en de maatschappij. Dit stuurt een lange termijn benadering aan de opbouw van een lerende organisatie. De lering uit de onderzoeksverslagen en de stukken die geraadpleegd zijn voor de totstandkoming van dit artikel is dat er een ruime hoeveelheid informatie aanwezig is over de tools om TPS mogelijk te maken. Echter blijkt in veel gevallen dat voor het werkelijk doorvoeren van productieproces optimalisatie een omslag in de bedrijfscultuur nodig is in vrijwel alle lagen van de organisatie. Reflecterend lijkt dat een groot gedeelte van het TPS niet direct gekoppeld hoeft te zijn aan de procesindustrie waarin tastbare producten gemaakt worden. Het TPS en de Toyota Way zijn wellicht ook het lichtende voorbeeld voor onderwijsvernieuwing op het HBO.
DOCUMENT
Sustainable consumption is interlinked with sustainable production. This chapter will introduce the closed-loop production, the circular economy, the steady state economy, and Cradle to Cradle (C2C) models of production. It will reflect on the key blockages to a meaningful sustainable production and how these could be overcome, particularly in the context of business education. The case study of the course for bachelor’s students within International Business Management Studies (IBMS) program at three Universities of Applied Science (vocational schools), and at Leiden University College in The Netherlands will be discussed. Student teams from these schools were given the assignment to make a business plan for a selected sponsor company in order to advise them how to make a transition from a linear to circular economy model. These case studies will illustrate the opportunities as well as potential pitfalls of the closed loop production models. The results of case studies’ analysis show that there was a mismatch between expectations of the sponsor companies and those of students on the one hand and a mismatch between theory and practice on the other hand. The former mismatch is explained by the fact that the sponsor companies have experienced a number of practical constraints when confronted with the need for the radical overhaul of established practices within the entire supply chain and students have rarely considered the financial viability of the "ideal scenarios" of linear-circular transitions. The latter mismatch applies to what students had learned about macro-economic theory and the application through micro-economic scenarios in small companies. https://www.springer.com/gp/book/9783319656076 LinkedIn: https://www.linkedin.com/in/helenkopnina/
MULTIFILE
A transparent and comparable understanding of the energy efficiency, carbon footprint, and environmental impacts of renewable resources are required in the decision making and planning process towards a more sustainable energy system. Therefore, a new approach is proposed for measuring the environmental sustainability of anaerobic digestion green gas production pathways. The approach is based on the industrial metabolism concept, and is expanded with three known methods. First, the Material Flow Analysis method is used to simulate the decentralized energy system. Second, the Material and Energy Flow Analysis method is used to determine the direct energy and material requirements. Finally, Life Cycle Analysis is used to calculate the indirect material and energy requirements, including the embodied energy of the components and required maintenance. Complexity will be handled through a modular approach, which allows for the simplification of the green gas production pathway while also allowing for easy modification in order to determine the environmental impacts for specific conditions and scenarios. Temporal dynamics will be introduced in the approach through the use of hourly intervals and yearly scenarios. The environmental sustainability of green gas production is expressed in (Process) Energy Returned on Energy Invested, Carbon Footprint, and EcoPoints. The proposed approach within this article can be used for generating and identifying sustainable solutions. By demanding a clear and structured Material and Energy Flow Analysis of the production pathway and clear expression for energy efficiency and environmental sustainability the analysis or model can become more transparent and therefore easier to interpret and compare. Hence, a clear ruler and measuring technique can aid in the decision making and planning process towards a more sustainable energy system.
LINK
Waste disposal management and the energy crisis are important challenges facing most countries. The fruit-processing industry generates daily several tons of wastes, of which the major share comes from banana farms. Anaerobic digestion (AD) technology has been applied to the treatment of wastewater, animal slurry, food waste, and agricultural residues, with the primary goals of energy production and waste elimination. This study examines the effect of organic loading (OL) and cow manure (CM) addition on AD performance when treating banana peel waste (BPW). The maximum daily biogas production rates of banana peels (BPs) with a CM content of 10%, 20%, and 30% at 18 and 22 g of volatile solids (gvs) per liter were 50.20, 48.66, and 62.78 mL·(gvs·d)−1 and 40.49, 29.57, and 46.54 mL·(gvs·d)−1, respectively. However, the daily biogas yield showed no clear interdependence with OL or CM content. In addition, a kinetic analysis using first-order and cone models showed that the kinetic parameters can be influenced by the process parameters.
LINK
This article presents a review of the current body of academic literature concerning gamification of production and logistics to understand the status quo and provide suggestions for future research. The findings indicate that the execution and control of production and logistic processes has been addressed most often in the current body of literature, which mostly consists of design research. Objectives and goals, points, achievements, multimedial feedback, metaphorical or fictional representations, and levels and progress are currently the most often employed affordances within this field. Research has focused in the given context on examining or considering motivation, enjoyment and flow, as the main psychological outcomes of gamification, while individual performance and efficiency are the most commonly examined or suggested behavioral and organizational impacts. Future studies should employ more rigorous designs within new subdomains of production and logistics and should firmly ground research designs and discussions in management theory and critical studies.
LINK
We review the current body of academic literature concerning gamification of production and logistics. The findings indicate that production execution and control has been addressed most often in the current body of literature, which consists mostly of design research. Objectives and goals, points, achievements, multimedial feedback, metaphorical/fictional representations, and levels and progress are currently most often employed gamification affordances on this field. The research has focused on examining or considering motivation, enjoyment and flow as the main psychological outcomes of gamification in the given context, while individual performance and efficiency are the most commonly examined or suggested behavioral/organizational impacts. Future studies should employ more rigorous study designs and firmly ground the discussions in organization theory.
LINK
Based on a literature review, this article discusses how the challenge of diminishing clothing production volumes has been approached within the field of sustainable fashion. We identify six common strategies in literature and discuss the approach of user involvement in the process of design and/or manufacture of garments in detail. A critical analysis of the state of the art in the field points out that these strategies have been constructed, studied and promoted without empirical validation. The article concludes with a recommendation to move forward from conceptual to empirical studies. Analyses of existing initiatives and their results in terms of consumer buying behavior and obsolete inventory are recommended as first steps towards validation.
DOCUMENT
The right to the city is a concept that was first proposed by Henri Lefebvre’s book ‘Le Droit à la Ville’ in 1968 and that has been reclaimed more recently by social movements, thinkers and several progressive local authorities alike as a call to action to reclaim the city as a co-created space—a place for life detached from the growing effects that commodification and capitalism have had over social interaction and the rise of spatial inequalities in worldwide cities throughout the last two centuries. Today, the right to the city theory has inspired many social movements in the world, especially in the Middle East (e.g. Arab Spring movements and conquering the public squares of the cities by citizens, the Istanbul movement in Taksim square, the Occupy Wall Street movement in New York). Urban public space is the place where all the collective social movements and collective memory of citizens occur. However, the main question around the neoliberal city of today is how and who will create the public space and for whom will this space be created? The aim of this chapter is to discuss the triple notions of space production, collective use of space and the right to the city in the context of the neoliberal cities of the Middle East. We will use a desktop review and case study approach to explain how, in the neoliberal city of today, the occupation of collective space in favour of private profit upsets and impinges upon the general right to the city. All the while discussing the participation of citizens in the process of space production and the increase in the collective use of public space, hence extending and enlarging the citizenry’s right to the city.
LINK
