Mate value is an important concept in mate choice research although its operationalization and understanding are limited. Here, we reviewed and evaluated previously established conceptual and methodological approaches measuring mate value and presented original research using individual differences in how people view themselves as a face-valid proxy for mate value in long- and short-term contexts. In data from 41 nations (N = 3895, M age = 24.71, 63% women, 47% single), we tested sex, age, and relationship status effects on self-perceived mate desirability, along with individual differences in the Dark Triad traits, life history strategies, peer-based comparison of desirability, and self-reported mating success. Both sexes indicated more short-term than long-term mate desirability; however, men reported more long-term mate desirability than women, whereas women reported more short-term mate desirability than men. Further, individuals who were in a committed relationship felt more desirable than those who were not. Concerning the cross-sectional stability of mate desirability across the lifespan, in men, short- and long-term desirability rose to the age of 40 and 50, respectively, and decreased afterward. In women, short-term desirability rose to the age of 38 and decreased afterward, whereas long-term desirability remained stable over time. Our results suggest that measuring long- and short-term self-perceived mate desirability reveals predictable correlates.
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Op 20 januari 2022 sprak mr. dr. Bart Wernaart zijn lectorale rede “Building value-based technology together" uit. Aansluitend werd Bart geïnstalleerd als lector Moral Design Strategy binnen Fontys Hogeschool Economie en Communicatie. Op deze website een verslag van alle onderdelen van die dag.
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The circular economy (CE) is heralded as reducing material use and emissions while providing more jobs and growth. We explored this narrative in a series of expert workshops, basing ourselves on theories, methods and findings from science fields such as global environmental input-output analysis, business modelling, industrial organisation, innovation sciences and transition studies. Our findings indicate that this dominant narrative suffers from at least three inconvenient truths. First, CE can lead to loss of GDP. Each doubling of product lifetimes will halve the related industrial production, while the required design changes may cost little. Second, the same mechanism can create losses of production jobs. This may not be compensated by extra maintenance, repair or refurbishing activities. Finally, ‘Product-as-a-Service’ business models supported by platform technologies are crucial for a CE transition. But by transforming consumers from owners to users, they lose independence and do not share in any value enhancement of assets (e.g., houses). As shown by Uber and AirBNB, platforms tend to concentrate power and value with providers, dramatically affecting the distribution of wealth. The real win-win potential of circularity is that the same societal welfare may be achieved with less production and fewer working hours, resulting in more leisure time. But it is perfectly possible that powerful platform providers capture most added value and channel that to their elite owners, at the expense of the purchasing power of ordinary people working fewer hours. Similar undesirable distributional effects may occur at the global scale: the service economies in the Global North may benefit from the additional repair and refurbishment activities, while economies in the Global South that are more oriented towards primary production will see these activities shrink. It is essential that CE research comes to grips with such effects. Furthermore, governance approaches mitigating unfair distribution of power and value are hence essential for a successful circularity transition.
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This study proposes a systematic value chain approach to helping businesses identify and eliminate inefficiencies. The authors have developed a robust framework, which food-sector entrepreneurs can use to increase profitability of an existing business or to create new profitable opportunities. The value chain approach provides win-win opportunities for players within the value chain. To test the robustness of the framework, the authors use food waste as an example of a critical inefficiency and apply it to two different food sector business cases, each operating in diverse conditions. Because the suggested framework addresses the core elements and parameters for the existence and competitiveness of a business, the model can be adapted to other sectors.
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This quick guide is written to inspire designers, policy makers, company owners, employees, educators and students to change the linear economy into a circular economy by collaborating in local value chains. This guide explains the basics of circular economy, value chains and it gives practical tips for you to work with and practical examples to learn from. It is developed within the context of the Biocup project, part of the BIOCAS Interreg project supported by the North Sea Programme of the European Regional Development Fund of the European Union.
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De culturele industrie staat onder druk. De subsidiënten en de sponsors trekken zich terug. De vraag is hoe Oerol zonder verlies aan identiteit nieuwe verdienmodellen kan introduceren op de volgende edities. Oerol trekt in 10 dagen 55.000 bezoekers waarvan er 25.000 het paspoort kopen waarmee toegang tot de koop van tickets mogelijk is. Dit aantal moet omhoog kunnen. Tevens veronderstellen wij dat de bezoeker niet bewust is van het risico die de particuliere organisatie van Oerol loopt bij iedere editie. In het rapport staat een analyse van de situatie waarbij de programmering- piramide alsmede de customer life-time value theorie wordt ingepast en aanbevelingen van verdienmodellen.
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Circularity and recycling are gaining increased attention, yet the amount of recycled plastic applied in new products remains low. To accelerate its uptake by businesses, it will be useful to empirically investigate the barriers, enablers, needs and, ultimately, requirements to increase uptake of recycled plastic feedstock for the production of new plastic products. During the six focus group sessions we conducted, a value chain approach was used to map the factors that actors face regarding the implementation of recycled materials. The identified factors were structured based on three levels: determining whether a certain factor acted as a barrier or enabler, identifying the steps in the value chain that the factor directly affected and the category it could be subdivided into. The results were then further processed by translating the (rather abstract) needs of businesses into (specific) requirements from industry. This study presented eight business requirements that require actions from other actors in the value chain: design for recycling, optimised waste processing, standardisation, material knowledge, showing possibilities, information and education, cooperation, and regulation and government intervention. The main scientific contributions were the value chain perspective and the applied relevance of the findings. Future studies may delve deeper into the individual factors identified.
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In BOP ventures the notion of “selling to the poor” has steadily been replaced by business approaches that suggest sustainable value creation. This has certain implications, in particular the development of strategies that serve triple bottom-line goals. These include economic, social and environmental benefits, in other words, the well known goals of people-planet-profit. However to optimise value-creation one ideally needs to follow a strategy that is based on some form of conceptual model that can serve as a frame of reference. This paper proposes such a conceptual model. The research was undertaken in 8 BOP projects involving multinational information and communication technology companies in Africa. ICT is relevant here because of frequently high expectations that it contributes positively to development goals. A study of the BOP literature reveals that several elements need consideration when trying to create value in developing areas. In addition it emerges that these elements are somehow interdependent. Using information found in the literature as guide a study of 8 cases was undertaken. The research approach was the case study method and the data was analysed for emerging patterns. Primary and secondary data was collected through interviews as well as a close study of archival and other sources. The analysis revealed three high level factors that may need to be aligned in order to ensure optimised value creation of BOP ventures. These three factors are BOP strategy, partnerships, and products & services development. It is also confirmed that neither BOP strategy nor partnerships nor products/service development can be synthesised independently from the rest. There is a delicate balance and interaction between the three where all three are interdependent and mutually influence each other.
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De hoofdvraag van dit onderzoek is samen met diverse organisaties binnen het duurzaamheidsdomein ontwikkeld en verwoord als: “Welke creatieve methoden kunnen ontwikkeld worden om de willingness to pay voor duurzame voedingsproducten bij consumenten te verhogen?”
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Speech by dr. Robert Baars at the official inauguration as Professor in Climate Smart Dairy Value Chains at Van Hall Larenstein University of Applied Sciences, 24th September 2021, Dairy Campus, Leeuwarden, The Netherlands.
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