Search results for "sustainability."
showing 10 items of 3338 documents
Investigating the Multi-Recyclability of Recycled Plastic-Modified Asphalt Mixtures
2023
Although the benefits of asphalt recycling have been scientifically proven and several best practices are being implemented, further research is required in specific and specialized areas. One of these circumstances is the recycling of Reclaimed Asphalt Pavements (RAPs) that contain asphalt modifiers such as elastomers and/or plastomers. Following the principles of the circular economy and considering the sustainability implications of asphalt mixtures, this paper deals with the multi-recyclability of asphalt mixtures containing 50% RAP with and without a recycled plastic asphalt modifier and rejuvenating agent. The recycled plastic asphalt modifier was made of hard recycled plastics and wa…
Evoluzione dei materiali intelligenti
2015
L’attività progettuale presiede alla scelta dei materiali e alla capacità tecnica entro le due dimensioni dell’agire: le conoscenze precedenti e la tensione verso il futuro. Questo ha permesso di individuare la successione i paradigmi “tecnologico-materici” che si sono avvicendati, caratterizzando il progetto con la comparsa di nuovi materiali e processi produttivi. L’avvento dei compositi ha rimesso in discussione tutti i materiali stravolgendone le caratteristiche. The design activity governs the choice of materials and technical capacity within the two dimensions of action: the previous knowledge and the tension towards the future. This has allowed us to identify the succession of "tech…
Simultaneous production of furfural and levulinic acid from pine sawdust via acid-catalysed mechanical depolymerization and microwave irradiation
2019
Abstract In this work pine sawdust was converted into levulinic acid (LA) and furfural. Sawdust was first pre-treated with sulfuric acid-catalysed mechanical depolymerization. The conversion reactions were then performed with microwave heating at 180 °C. To enhance the furfural yield and the efficient separation of furfural and LA, a biphasic water-toluene reaction system was used. The effect of an additional catalyst, AlCl3, on the yield of LA and furfural was also studied. According to the results the pre-treatment method enhanced the yields of LA. In addition, due to the microwave heating the reaction times were short. Additional AlCl3 catalyst enhanced the LA yield, however excellent fu…
The renaissance of tramways and urban redevelopment in France
2017
Abstract Tramways have made a remarkable comeback in France since the 1980s. An organization of public transport based on the decentralized administration system set up in the early 1980s has allowed local urban authorities to make their own choices to develop public transport networks in the context of automobile domination. As in many other countries, worries about fossil fuel dependency and demands concerning sustainable urban development appear as strong elements in favour of urban light rail. However, in France, tramways are not just technical solutions for traffic congestion, they have also become a symbol of a cultural mutation in urban development planning. Coupled with a national p…
La reputación como ventaja competitiva sostenible
2019
En los actuales contextos globalizados, las empresas se encuentran en una búsqueda incesante por diferenciarse. La oferta de bienes y servicios en general ha crecido, tanto en cantidad como en calidad. A tal grado se produce este fenómeno que, si la empresa no encuentra una buena razón (y la comunica correctamente) para ser elegida por los consumidores, se condena a perder mercado y/o rentabilidad. Las tradicionales fuentes de ventaja competitiva se encuentran sobreexplotadas. Además de presentar problemas con su sostenibilidad. En principio, es necesario definir la reputación corporativa y diferenciarla de otros conceptos con los cuales se relaciona. Con esta base, se procederá a referirse…
The Role of e-Tutor Competencies in Postgraduate e-Learning Courses: Spotlight on Emotion Management
2021
The role of e-learning in the existing and challenging educational era is crucial. However, it is necessary to overcome some drawbacks such as feelings of isolation and a lack of emotional contact. In this sense, emotion management is a key driver of student satisfaction in e-learning, which is significantly related to students’ motivation, learning, cognitive strategies, self-regulation, and personality antecedents in the classroom. This article examines an online postgraduate course in financial statements auditing, describing the resources used by the e-tutor to conduct affective tutorials, reduce students’ feelings of isolation, increase student involvement, and achieve success in e-lea…
Social Capital, Human Capital, and Sustainability: A Bibliometric and Visualization Analysis
2018
[EN] Academic interest in social and human capital is growing significantly. Similarly, their relationship with sustainability is increasing, especially compared to sustainability¿s relationship with natural capital and financial and economic capital. Bibliometric and visualization research on these relationships is nonetheless insufficient. This study analyzes the evolution of the literature on natural capital, financial and economic capital, and social and human capital related to sustainability. On the other hand, the study presents a bibliometric analysis on social capital and human capital (SHC) related to sustainability. The article studies 635 references collected from theWeb of Scie…
Levels of cognitive congruence between managers and team members’ perceptions of cooperation at work
2019
Much of the research on the psychological dynamics of performance teams suffers from the following limitations: consideration of only one theoretical framework and analysis of just one perspective (e.g., manager&ndash
E-Fairs: a Cyber-Physical System for Aggregation and Economy of Scale in e-Commerce
2018
In recent years, the e-commerce arena has deeply changed because of the advent of new business models and the growing weight of huge global actors like Amazon. Some business models create competition between users, and the product price tends to rise (e.g., online auctions); other models, including group-buying, make users cooperate, and the price tends to go down. The present study extends the group-buying model and proposes a cyber-physical system called e-fair, in which both sellers and buyers are grouped to negotiate on a specific product or service. E-fairs minimize the global purchase price and the shipping resources respectively with the aggregation of demand and supply as well as or…
Sustainable virtual teams: promoting well-being through affect management training and openness to experience configurations
2021
A disruptive digitalization recently occurred that led to the fast adoption of virtual teams. However, membership diversity and team virtuality threaten members’ well-being, especially if faultlines appear (i.e., subgroups). Considering the job demands–resources model and the role of group affect in shaping members’ perceptions of well-being, we test the effectiveness of a short-term affect management training for increasing members’ eudaimonic well-being. Moreover, based on the trait activation theory and the contingent configuration approach, we draw on the personality composition literature to test how different openness to experience configurations of team level and diversity together m…