Suchergebnisse

Este trabalho visa compreender a multiplicidade de sentidos e experiências históricas que se cruzam no manuscrito latino conservado na Bibliothèque Nationale de France sob o número 1.572, outrora conservado em Saint-Martin de Tours e que preserva uma coleção de "atas do concílio de Éfeso (431)" nomeada a partir dele. Defendo inicialmente a própria desconstrução da ideia de que o concílio de Éfeso tenha produzido atas em sentido estrito, alinhando-me às ideias de Eduard Schwartz acerca tanto do faccionalismo desse encontro como do caráter propagandístico das coleções documentais produzidas pelos partidos em choque nesse momento e por novos grupos eclesiásticos que deram novos sentidos à disputa cristológica após o concílio de Calcedônia (451). Passando em revista, em seguida, pela recepção do debate efesino no Ocidente latino, procedo a uma breve descrição dessa dita coleção de Tours, levantando hipóteses sobre a datação e o local de seu arquétipo (segundo quarto do século VI em Constantinopla). Por fim, voltando-me ao contexto da Gália, ofereço uma hipótese de transmissão da coleção por meio de um itinerário mediterrânico associado à dita controvérsia dos Três Capítulos, concluindo que sua recepção e produção no período carolíngio se deu tanto por meio da recuperação de sentidos produzidos ao longo dessa longa e difusa cadeia de transmissão mediterrânica quanto por novos interesses e necessidades que surgiam nesse momento na Gália carolíngia e que não necessariamente se vinculavam à polêmica cristológica.

This open access book explores key issues and presents recent case studies in areas of importance for the transition to a circular model of development in emerging African countries that will minimize resource consumption and waste production. The topics covered include the development of sustainable housing models, energy and environmental issues in building design and technical systems, recycling for a sustainable future, models for humanitarian emergencies, and low-cost and web-based digital tools with applications in architecture and archaeology. The aim is to contribute to a necessary paradigm shift with respect to urban planning and usage of territories, moving from a linear urban metabolism based on the "take, make, dispose" approach to a circular metabolism. Such a change requires a focus on the relationship between the architectural, urban, and physical aspects of new developments, climate, and energy demand, as well as the identification and integration of strategies and infrastructures to achieve a high level of efficiency and self-sufficiency. The book will appeal to all with an interest in sustainable development in the African context.

The article analyzes some traits of the relationship between the public policies implemented during the Workers' Party's administrations between 2003 and 2016, and the constitution of a neoliberal subjectivity among fractions of Brazilian working classes. Such arrangement promoted the idea that social conflict revolves around the opposition between rich and poor, putting aside the individual's relations with class. Meanwhile, "Lulism" favored the development of individualism and entrepreneurship among Brazilian workers. To do so, we will refer to some researches regarding their situation, especially in the outskirts of large Brazilian cities. Besides, we will resort to some observations made by Michel Foucault, since they are helpful to explore those questions.

Knowledge of a territory is an essential element in any future planning action and in appropriate territorial and environmental requalification action planning. The current large-scale availability of satellite data, thanks to very high resolution images, provides professional users in the environmental, urban planning, engineering, and territorial government sectors, in general, with large amounts of useful data with which to monitor the territory and cultural heritage. Italy is experiencing environmental emergencies, and coastal erosion is one of the greatest threats, not only to the Italian heritage and economy, but also to human life. The aim of this paper is to find a rapid way of identifying the instantaneous shoreline. This possibility could help government institutions such as regions, civil protection, etc., to analyze large areas of land quickly. The focus is on instantaneous shoreline extraction in Ortona (CH, Italy), without considering tides, using WorldView-2 satellite images (50-cm resolution in panchromatic and 2 m in multispectral). In particular, the main purpose of this paper is to compare commercial software and ACM filters to test their effectiveness

O estudo atual tem como objetivo investigar a correlação entre os preços do milho e da soja com os preços da carne no mercado nacional. A partir dos dados de preços mensais de julho de 2010 a julho de 2022, obtidos das fontes CEPEA, Embrapa, IPEADATA e Corretora Mercado, foram conduzidas análises estatísticas para identificar possíveis correlações lineares entre as variáveis. Os resultados apontaram para uma forte correlação linear positiva entre os preços da carne de frango e as commodities farelo de soja e milho grão. Além disso, foi observada uma correlação positiva entre os preços do suíno vivo e essas mesmas commodities. O milho grão mostrou uma correlação mais expressiva com a carne de frango (r = 0,92), enquanto o farelo de soja apresentou maior correlação com o suíno vivo (r = 0,85). Os modelos de regressão linear que melhor representaram essas relações foram aqueles que não envolveram o uso do logaritmo natural nas variáveis nominais. Em suma, o estudo evidencia que a relação entre os preços dos insumos agrícolas e os valores da carne é relevante e pode ser útil na elaboração de estratégias para promover a sustentabilidade econômica dos setores analisados dentro do cenário do agronegócio brasileiro.

Knowledge of a territory is an essential element in any future planning action and in appropriate territorial and environmental requalification action planning. The current large-scale availability of satellite data, thanks to very high resolution images, provides professional users in the environmental, urban planning, engineering, and territorial government sectors, in general, with large amounts of useful data with which to monitor the territory and cultural heritage. Italy is experiencing environmental emergencies, and coastal erosion is one of the greatest threats, not only to the Italian heritage and economy, but also to human life. The aim of this paper is to find a rapid way of identifying the instantaneous shoreline. This possibility could help government institutions such as regions, civil protection, etc., to analyze large areas of land quickly. The focus is on instantaneous shoreline extraction in Ortona (CH, Italy), without considering tides, using WorldView-2 satellite images (50-cm resolution in panchromatic and 2 m in multispectral). In particular, the main purpose of this paper is to compare commercial software and ACM filters to test their effectiveness.

In the next years, the upcoming emission legislations are expected to introduce further restrictions on the admittable level of pollutants from vehicles measured on homologation cycles and real drive tests. In this context, the strict control of pollutant emissions at the cold start will become a crucial point to comply with the new regulation standards. This will necessarily require the implementation of novel strategies to speed-up the light-off of the reactions occurring in the after-treatment system, since the cold start conditions are the most critical one for cumulative emissions. Among the different possible technological solutions, this paper focuses on the evaluation of the potential of a burner system, which is activated before the engine start. The hypothetical burner exploits the lean combustion of an air-gasoline mixture to generate a high temperature gas stream which is directed to the catalyst section promoting a fast heating of the substrate. In this work, an experimental test bench has been adopted to characterize the thermal transient of the after-treatment system when the burner-like system is activated, monitoring the temperature of the gas flow and the temperature of the metallic walls at different locations. Moreover, a CFD model has been developed to investigate the light-off of the reactions during the initial operation of the burner and the subsequent start of the engine. The model, developed on the basis of the OpenFOAM code, resorts to a multi-region approach, where different meshes are employed to describe the fluid domain and the solid regions, namely the catalytic porous substrates and the metallic walls constituting pipes and canning. Specific submodels are implemented to consider flow resistance, heat transfer, mass transfer and catalytic reactions occurring in the catalyst region. The CFD framework has been initially validated on the experimental data acquired on the test bench. The methodology has been then applied to the preliminary analysis of the catalyst light-off at engine ...

We investigate how the design of compensation systems influences workers' behaviours at the organizational level by building upon the consequences of equity theory at the individual level. We identify four main gaps to fill in the existing equity-in-compensation research: i) the simultaneous analysis of internal and external inequity; ii) the distinction between inequitable and unequal compensation systems; iii) the organizational-level (rather than individual) effects of inequitable systems; and iv) the inclusion of absenteeism among the negative organizational outcomes of inequitable systems. The analysis of a sample of about 1500 Italian manufacturing firms shows that both internal and external equity are relevant factors in explaining the level of absenteeism. On the one hand, external pay equity is associated with a lower level of absenteeism, and the relationship becomes stronger when high pay levels are explained by past employees' performances. On the other hand, internal pay equity showed a more complex relationship, where blue-collar employees seem to react more in terms of absence to internal inequity than white-collars; moreover, performance-based pay policies (i.e. explained inequalities) further enhance the extent blue-collar employees react to internal pay equity. These results have important theoretical and practical implications, and confirm that the organizational consequences of workers' behaviours are not a mere reflection of individual-level decisions.

In December 2012 ENIservizi (the Italian multi-national energy agency operating in many countries), after the Earthquake that occurred in April 2009, decided to undertake the project 'Re-start from Collemaggio' with the aim of giving new hope to the L'Aquila community, funding around 14 million Euro to restore the Basilica di Collemaggio. The Superintendence Office carried on the restoration project with the scientific support of the Università degli Studi de L'Aquila and the Università La Sapienza di Roma, under the coordination of the Politecnico di Milano. ENIservizi, aware of the BIM potential in the complex building and infrastructure domain in the world, required an advanced HBIM from the laser scanner and photogrammetric surveying to support the diagnostic analysis, the design project, the tender and the restoration itself, today still on course. Plans and vertical sections were delivered (2012) starting from the surveying campaigns (February and June 2013), together with the first HBIM advancement from the end of 2012 in support of the preliminary-definitive-executive steps of the restoration design project (2013-14-15). Five years later, this paper tries to make a synthesis of the different lessons learnt, in addition to the positive and critical aspects relating HBIM feasibility, sustainability and usefulness to the challenging restoration work. In particular, the Collemaggio BIM experience anticipated the new Italian Public Procurement Legislation (D.Lgs 50/2016, Nuovo Codice degli Appalti pubblici) aligned with to the EUPPD 24/2014: the EU Directive on Public Procurement asked all the 28 EU countries to adopt building informative modelling by February 2016 in order to support the whole LCM (Life Cycle Management), starting from the project and the intervention, through rewarding scores or mandatory regulations. Many analyses foresees to save from around 5% to 15% of the overall investment by adopting mature BIM (Level 3 to 5), particularly 4D remotely controlled BIM in support of the LCM, as in the case of maintenance and management process. The tender for Basilica restoration was published in 2015: the process was not developed enough to introduce selective criteria based on BIM adoption by the Construction Industry due to the lack of legislation at that time and the lack of BIM skills among the companies. Nevertheless ENIservizi also separately funded aside the HBIM of the Basilica to tackle an advanced BIM able to address decision-making processes in the heritage domain among the different actors: to support operators, architects, structural engineers, economic computation, construction site management and restoration, the theoretical and practical approach adopted by the HBIM, overcame the current logic based on sequential LoD (from simplex to complex, from the preliminary to the executive design) that is typical of new constructions in favour of a complex LoD approach that could guarantee management of the richness, unicity and multiplicity of each component and the maximum degree of knowledge in order to derive the decisions from the starting phases of the project. On the lesson learnt from this experience, the process of updating the current codification criteria (UNI11337-2009) was started with a draft proposal stimulating a debate for the future of HBIM adoption.