38 research outputs found
Iron-based reversible adhesives: Effect of particles size on mechanical properties
No full text A hot melt adhesive – mainly used for bonding plastic component in automotive field – was modified with different iron-based particles to give it a reversible behaviour. Mechanical and physical properties of these reversible adhesives were experimentally assessed in the work. The modified adhesives, coupled with electromagnetic induction, are able to guarantee separation of the joints without any damage to the substrates for recycling, reuse or repairing of components. Single lap joint specimens were prepared using epoxy/glass fibres substrates and tests were carried out on neat and modified adhesive with 5% weight of iron and iron oxide. Three different Fe particles size were tested: 450 µm, 60 µm and 1–6 µm. The particles size of iron oxide was 50 nm. Separation was studied using single lap joint specimens under electro-magnetic induction. Experimental results showed that the maximum peak load decreases when the average particles sizes increase. The peak loads of the smallest particles were equal to the ones of the pristine adhesive. The elongation of the adhesives increases when the adhesive is modified with both iron and iron oxide particles. Finally, experimental tests on single lap joints coupled with electro-magnetic induction showed that separation of the substrates is possible using iron oxide particles. Electro-magnetic tests conducted on particles alone, helped to understand that bigger particles are able to overcome the melting temperature of the adhesive but hot-melt adhesives modified with these particles are not able to reach the melting. These tests showed that the number of particles into the adhesive matrix is very important for this kind of tests. </jats:p
A novel electroluminescent PPV copolymer and silsesquioxane nanocomposite film for the preparation of efficient PLED devices
No full textStoria, storia del pensiero politico e teologia: un rapporto complesso
No full textThe paper deals with the relationship between medieval history and the history of medieval political thought. The author claims that, after a long period of time in which political thought was not considered a relevant object of a genuine historical inquiry, the situation is changing. In is opinion, the so-called linguistic turn has contributed to overcoming a prejudice against political thought, wrongly considered to be too abstract and unable to interpret historical reality. In order to support his claim, the author mentions not only recent volumes, such as The Languages of Political Society (2011), but also the contributions by Giacomo Todeschini and Paolo Evangelisti, deeply rooted in the legacy of Ovidio Capitani’s teaching. Enrico Artifoni’s ground-breaking studies on political communication in the Italian communi show how fruitful attention to language can also lead to a better understanding of the true functioning of civic institutions. In the second part, the paper focuses on the renewed attention to “political theology”, intended not exclusively in the terms of Carl Schmitt, but rather in those of Ernst Kantorowicz. Referring to Antony Black, the author shows that it legitimates to speak of a theological language as one among other medieval political languages through which life in society and its sense in history were interpreted
IL POTERE E CRISTO: CRISTOLOGIE E POLITICA IN UNA RECENTE PUBBLICAZIONE
No full textThe paper deals with the articles published in the volume Cristo e il potere. Teologia, antropologia e politica, a cura di L. Andreani - A. Paravicini Bagliani, Firenze, Sismel Edizioni del Galluzzo, 2017. The author stresses the relationships existing among most of the contributions and the debates concerning "political theology
Tota familia Aristotelis: On some sources of Bacon’s contribution to medieval political discourse
No full textWriting his Moralis philosophia, Roger Bacon discussed issues relevant to medieval political discourse. He felt the need to appeal to the authority of Aristotle, but having no access to Aristotle’s Politica, he tried to reconstruct its main tenets through the writings of other thinkers, such as Avicenna and Alfarabi. The result of this attempt is a sketch of a political theory that goes mainly under the name of Aristotle but has little to do with the actual contents of the Politica. In the following years, Bacon remained faithful to his first reconstruction. The author suggests that, with all probability, Bacon, never read the actual text of the Politica. the result is that Bacon’s contribution in this field was not influenced by Aristotle’s political masterpiece, but by other texts, in particular by Avicenna’s Philosophia prima. Such an assessment should not imply a negative judgement on Bacon. Rather, we should consider him among those authors who contributed to the rich diversity of medieval political thought independent of Aristotle’s Politica.Al escribir su Moralis philosophia, Roger Bacon trató temas relevantes para el discurso político medieval. Sintió la necesidad de apelar a la autoridad de Aristóteles, pero al no tener acceso a la Política de Aristóteles, intentó reconstruir sus principios fundamentales a través de los escritos de otros pensadores, como Avicena y Alfarabi. El resultado de esta tentativa fue un esbozo de teoría política que se presenta principalmente bajo el nombre de Aristóteles, pero que tiene poco que ver con el contenido real de la Política. En los años siguientes, Bacon se mantuvo fiel a su primera reconstrucción. El autor sugiere que, con toda probabilidad, Bacon nunca leyó el texto real de la Política. El resultado fue que la contribución de Bacon a este campo no estuvo influida por la obra maestra de la política de Aristóteles, sino por otros textos, en particular por la Philosophia prima de Avicena. Esta valoración no debe implicar un juicio negativo sobre Bacon. Por el contrario, debemos considerarlo entre los autores que contribuyeron a la rica diversidad del pensamiento político medieval independientemente de la Politica de Aristótele
Lost in Translation. About the Castilian Gloss on Giles of Rome’s De regimine principum
No full textThe paper shows how deep are the changes that Giles of Rome's de regimine principum undergoes in the so-called Castilian Gloss. the traditional attibution to the Franciscan friar Juan Garcia de Castrojeriz has been challenged. The paper claims, however, on internal evidence, that the author must have been a Franciscan friar. The book is edited by G. Briguglia and T. Ricklin
Oligopoly, the Environment and Natural Resources
No full textIndustrial production and consumption patterns rely heavily on the intensive use of both renewable and non-renewable resources and the consequences for the environment can be serious. Following a long period of time where the profit incentives of firms have prevailed over preservation of the environment and the world’s natural resources, a new consensus has emerged concerning the need to regulate firm behaviour, aimed at ensuring the sustainability of the economic system in the long run.
This book offers an exhaustive overview of current economic debate about
these topics, taking modern oligopoly theory as a benchmark. The first part of the book covers static models dealing with incentives for green research and development, Pigovian taxation, cartels, environmental quality and international trade, as well as the role of corporate social responsibility, public firms and consumer environmental awareness as endogenous regulatory instruments.
The author moves on to examine the role of time while drawing from optimal
control and differential game theory. This opens the way to the discussion of fair discount rates to ensure the welfare of future generations, as well as the long run sustainability of production and consumption patterns
Game Theory in the Social Sciences. A Reader-Friendly Guide
No full textIndividuals, firms, governments and nations behave strategically, for good and bad. Over the last few decades, game theory has been constructed and progressively refined to become the major tool used by social scientists to understand, predict and regulate strategic interaction among agents who often have conflicting interests. In the surprisingly anodyne jargon of the theory, they “play games”. This book offers an introduction to the basic tools of game theory and an overview of a number of applications to real-world cases, covering the areas of economics, politics and international relations. Each chapter is accompanied by some suggestions for further reading. The book begins with an outline of the history of game theory, whose early achievements were driven by the ColdWar. Then, the definitions of games, strategies and solution concepts are illustrated as informally as possible, accompanying each of them with intuitive explanations. The remainder of the book is entirely devoted to lay out examples related to economic issues (technical progress, advertising, cartels, monetary and fiscal policy) and a number of problems related to politics (voting and electoral campaigns) and international relations and international political economy (such as the Cold War, free trade versus protectionism, and openness versus security). The last two chapters deal, respectively, with the role of information and the strategic manipulation thereof, and cooperation and bargaining in games where agents may leave aside their selfish attitude and approach each other in a somewhat different mood. These two chapters also offers appropriate examples. The author has intentionally taken an accessible approach to the subject matter. No particular knowledge of calculus is required to follow the book, and to grasp its message. Therefore, this volume would suit undergraduates and masters’ students in the social sciences without a background in mathematics, as well as anyone interested in understanding relevant phenomena of contemporary economics and politics
Marsilius of Padua. A Reader of Aristotle's Politica
No full textThe article reflects on how Marsilius of Padua read Aristotle's Politics in his Defensor Pacis. It shows how Marsilius reveals himself to be an attentive and skilful reader of this Advancing the hypothesis that the author used a copy of Moerbeke's Latin translation in which the division into chapters was different from the one usually used by modern scholar
I parchi-margine: una <i>specie</i> di parco per i paesaggi urbani contemporanei1
No full textStarting from the definition of the concepts of park’s specie, the article proposes a reading of recent European experiences of construction of urban park. The author focalizes attention over the edge-park, conceived as a mediation open space enter the town and its margins (geographic, natural, administrative) and/or enter parts different for role, function and characters. </div
