IMT Institutional Repository: No conditions. Results ordered -Date Deposited. 2024-03-29T07:20:46ZEPrintshttp://eprints.imtlucca.it/images/logowhite.pnghttp://eprints.imtlucca.it/2018-03-09T11:34:11Z2018-03-09T11:34:11Zhttp://eprints.imtlucca.it/id/eprint/3983This item is in the repository with the URL: http://eprints.imtlucca.it/id/eprint/39832018-03-09T11:34:11ZPotenzialità economica e risorsa umanaIl contributo riflette sui cambiamento in atto nel governano economico dell'azienda e pone le premesse per uno sviluppo della strategie aziendale in stretta simbiosi con il capitale cognitivo riconducibili alle risorse umaneNicola Lattanzinicola.lattanzi@imtlucca.it2016-01-13T13:03:45Z2016-09-14T10:21:18Zhttp://eprints.imtlucca.it/id/eprint/2993This item is in the repository with the URL: http://eprints.imtlucca.it/id/eprint/29932016-01-13T13:03:45ZValorizzazione e fruizione dei beni culturaliLorenzo Casinilorenzo.casini@imtlucca.it2016-01-13T12:57:53Z2016-09-14T10:21:18Zhttp://eprints.imtlucca.it/id/eprint/2992This item is in the repository with the URL: http://eprints.imtlucca.it/id/eprint/29922016-01-13T12:57:53ZL'Agenzia del farmaco: ufficio-agenzia o agenzia-ente pubblico?Lorenzo Casinilorenzo.casini@imtlucca.it2013-12-04T10:48:20Z2013-12-04T10:48:20Zhttp://eprints.imtlucca.it/id/eprint/2032This item is in the repository with the URL: http://eprints.imtlucca.it/id/eprint/20322013-12-04T10:48:20ZKarl Popper's anti-foundationalist conception of rationalityStefano Gatteistefano.gattei@imtlucca.it2012-10-12T13:07:55Z2013-06-11T12:08:59Zhttp://eprints.imtlucca.it/id/eprint/1397This item is in the repository with the URL: http://eprints.imtlucca.it/id/eprint/13972012-10-12T13:07:55ZMilitanti e vita di base del Pci: il partito delle sezioni 1945-1989At the centre of this essay about the Turin’s federation of the Italian Communist Party is the life of the base of the party from the particular point of view of the sections, that are the basic organ of the organization. Since 1945 these organs lived a big expansion, that increased exceptionally since 1956, starting from a new conception of the organization of the party, that is finalized to develop a stronger activity into the people, as it is normal for a Popular Party in a phase of de-ideologisation. It is significant that in a traditional communist city as Turin some section had a very intensive power, especially during the 70s and the big growth of the party, so intensive that can exercise a pressure on the government of the city and on the federal ruling group of the party, originating an internal dualism into the party. Fiammetta Balestraccifiammetta.balestracci@imtlucca.it2012-10-12T09:58:57Z2013-06-11T11:55:48Zhttp://eprints.imtlucca.it/id/eprint/1388This item is in the repository with the URL: http://eprints.imtlucca.it/id/eprint/13882012-10-12T09:58:57ZLa Prussia tra reazione e rivoluzione, 1918-1920: la riorganizzazione degli interessi agricoli tra esperienze consiliari e modelli corporativi The book is the publication of the PhD dissertation of the Author and focuses on the social, political and economic reaction of the Prussian – German – countryside to the World War One and the Councils Revolution that was at the origin of the birth of the Weimar Republic. In the chaotic time of the Post War Period the German Councils became in the countryside a instrument in the hands of different political spokesman of the rural areas for implementing different and radical alternative plans with the aim of a new functioning of the rural society: in the hands of the agrarian associations and of the Prussian landholders was an instrument of restoration in the direction of a new corporatisation of the agricultural interests; in the hands of the revolutionary urban and military councils was an activity field for trying to democratize the structure of the society and the economy of the lands, a possibility that went punctually missed. The dissertation can be considered a typical example of Social History, inspired and influenced by the historiographical theories of the New Social History of the School of Bielefeld. Fiammetta Balestraccifiammetta.balestracci@imtlucca.it2012-07-04T08:57:29Z2012-07-04T08:57:29Zhttp://eprints.imtlucca.it/id/eprint/1311This item is in the repository with the URL: http://eprints.imtlucca.it/id/eprint/13112012-07-04T08:57:29ZEffect of dielectric polarization on the properties of charged point defects in insulating crystals: the nitrogen vacancy in AlNLarge unit cell calculations of the properties of charged point defects in insulators largely neglect dielectric polarization of the crystal, because the periodically repeated cells are so small. Embedded quantum cluster calculations with shell-model crystals, representing a single defect in a large crystal, are able to represent the polarization more realistically. For such embedded quantum clusters, we evaluate the optical excitation energy for the nitrogen vacancy in charge state (+3): vN3+ in AlN. This is done with and without dielectric polarization of the embedding crystal. A discrepancy of a few per cent is found, when both ground and excited state orbitals are well-localized within the vacancy. We show that the discrepancy rises rapidly as the excited state becomes more diffuse. We conclude that an embedded cluster approach will be required for transitions that involve even somewhat diffuse states. The investigation is based on a new model for AlN that shows promise for quantitative accuracy.John M VailDaniel SchindelA. YangOrion Pennerorion.penner@imtlucca.itRavi PandeyHuitian JiangMiguel Álvarez BlancoAurora CostalesQing Chun QiuY. Xu2012-02-27T10:57:19Z2012-02-27T10:57:19Zhttp://eprints.imtlucca.it/id/eprint/1191This item is in the repository with the URL: http://eprints.imtlucca.it/id/eprint/11912012-02-27T10:57:19ZThe mathematics of networks: the structure of social and biological systemsNetwork organization is just about universal in the real worldGuido Caldarelliguido.caldarelli@imtlucca.it2012-02-15T16:12:41Z2013-11-21T09:02:22Zhttp://eprints.imtlucca.it/id/eprint/1128This item is in the repository with the URL: http://eprints.imtlucca.it/id/eprint/11282012-02-15T16:12:41ZWidespread occurrence of the inverse square distribution in social sciences and taxonomyThe widespread occurrence of an inverse square relation in the hierarchical distribution of subcommunities within communities (or subspecies within species) has been recently invoked as a signature of hierarchical self-organization within social and ecological systems. Here we show that, whether such systems are self-organized or not, this behavior is the consequence of the treelike classification method. Different treelike classifications (both of real and truly random systems) display a similar statistical behavior when considering the sizes of their sub-branches.Guido Caldarelliguido.caldarelli@imtlucca.itCécile Caretta CartozoPaolo De Los RiosVito D. P. Servedio2012-02-15T16:02:44Z2012-02-15T16:02:44Zhttp://eprints.imtlucca.it/id/eprint/1127This item is in the repository with the URL: http://eprints.imtlucca.it/id/eprint/11272012-02-15T16:02:44ZStructure of cycles and local ordering in complex networksWe study the properties of quantities aimed at the characterization of grid-like ordering in complex networks. These quantities are based on the global and local behavior of cycles of order four, which are the minimal structures able to identify rectangular clustering. The analysis of data from real networks reveals the ubiquitous presence of a statistically high level of grid-like ordering that is non-trivially correlated with the local degree properties. These observations provide new insights on the hierarchical structure of complex networks.Guido Caldarelliguido.caldarelli@imtlucca.itRomualdo Pastor-SatorrasAlessandro Vespignani2012-02-15T15:54:46Z2012-02-15T15:54:46Zhttp://eprints.imtlucca.it/id/eprint/1126This item is in the repository with the URL: http://eprints.imtlucca.it/id/eprint/11262012-02-15T15:54:46ZPreface on "Applications of Networks"Guido Caldarelliguido.caldarelli@imtlucca.itAyşe ErzanAlessandro Vespignani2012-02-15T15:49:49Z2012-02-15T15:49:49Zhttp://eprints.imtlucca.it/id/eprint/1125This item is in the repository with the URL: http://eprints.imtlucca.it/id/eprint/11252012-02-15T15:49:49ZVirtual Round Table on ten leading questions for network researchThe following discussion is an edited summary of the public debate started during the conference "Growing Networks and Graphs in Statistical Physics, Finance, Biology and Social Systems" held in Rome in September 2003. Drafts documents were circulated electronically among experts in the field and additions and follow-up to the original discussion have been included. Among the scientists participating to the discussion L.A.N. Amaral, A. Barrat, A.L. Barabasi, G. Caldarelli, P. De Los Rios, A. Erzan, B. Kahng, R. Mantegna, J.F.F. Mendes, R. Pastor-Satorras, A. Vespignani are acknowledged for their contributions and editing. Luis A. N. AmaralAlain BarratGuido Caldarelliguido.caldarelli@imtlucca.itAlbert-László BarabásiPaolo De Los RiosAyşe ErzanByungnam KahngRosario Nunzio MantegnaJosè F. F. MendesRomualdo Pastor-SatorrasAlessandro Vespignani2012-02-15T15:33:23Z2012-02-15T15:33:23Zhttp://eprints.imtlucca.it/id/eprint/1124This item is in the repository with the URL: http://eprints.imtlucca.it/id/eprint/11242012-02-15T15:33:23ZNetworks of equities in financial marketsWe review the recent approach of correlation based networks of financial equities. We investigate portfolio of stocks at different time horizons, financial indices and volatility time series and we show that meaningful economic information can be extracted from noise dressed correlation matrices. We show that the method can be used to falsify widespread market models by directly comparing the topological properties of networks of real and artificial markets.Giovanni BonannoGuido Caldarelliguido.caldarelli@imtlucca.itFabrizio LilloSalvatore MiccichèNicolas VandewalleRosario Nunzio Mantegna2012-02-15T14:23:12Z2012-02-15T14:23:12Zhttp://eprints.imtlucca.it/id/eprint/1123This item is in the repository with the URL: http://eprints.imtlucca.it/id/eprint/11232012-02-15T14:23:12ZStatistical features of drainage basins in mars channel networks: can one guess from the landscape the past presence of water?Erosion by flowing water is one of the major forces shaping the surface of Earth. Studies in the last decade have shown, in particular, that the drainage region of rivers, where water is collected, exhibits scale invariant features characterized by exponents that are the same for rivers around the world. Here we show that from the data obtained by the MOLA altimeter of the Mars Global Surveyor one can perform the same analysis for mountain sides on Mars. We then show that in some regions fluid erosion might have played a role in the present martian landscape.Guido Caldarelliguido.caldarelli@imtlucca.itPaolo De Los RiosMarco MontuoriVito D. P. Servedio2012-02-14T14:36:31Z2013-11-21T09:03:40Zhttp://eprints.imtlucca.it/id/eprint/1121This item is in the repository with the URL: http://eprints.imtlucca.it/id/eprint/11212012-02-14T14:36:31ZPreferential exchange: strengthening connections in complex networksMany social, technological, and biological interactions involve network relationships whose outcome intimately depends on the structure of the network and on the strengths of the connections. Yet, although much information is now available concerning the structure of many networks, the strengths are more difficult to measure. Here we show that, for one particular social network, notably the e-mail network, a suitable measure of the strength of the connections can be available. We also propose a simple mechanism, based on positive feedback and reciprocity, that can explain the observed behavior and that hints toward specific dynamics of formation and reinforcement of network connections. Network data from contexts different from social sciences indicate that power-law, and generally broad, distributions of the connection strength are ubiquitous, and the proposed mechanism has a wide range of applicability.Guido Caldarelliguido.caldarelli@imtlucca.itFabrizio CoccettiPaolo De Los Rios2012-02-14T14:31:41Z2013-11-20T14:32:59Zhttp://eprints.imtlucca.it/id/eprint/1120This item is in the repository with the URL: http://eprints.imtlucca.it/id/eprint/11202012-02-14T14:31:41ZAssortative model for social networksIn this Brief Report we present a version of a network growth model, generalized in order to describe the behavior of social networks. The case of study considered is the preprint archive at cul.arxiv.org. Each node corresponds to a scientist, and a link is present whenever two authors wrote a paper together. This graph is a nice example of degree-assortative network, that is, to say a network where sites with similar degree are connected to each other. The model presented is one of the few able to reproduce such behavior, giving some insight on the microscopic dynamics at the basis of the graph structure.Michele CatanzaroGuido Caldarelliguido.caldarelli@imtlucca.itLuciano Pietronero2012-02-14T14:21:09Z2013-11-20T14:58:49Zhttp://eprints.imtlucca.it/id/eprint/1119This item is in the repository with the URL: http://eprints.imtlucca.it/id/eprint/11192012-02-14T14:21:09ZVertex intrinsic fitness: How to produce arbitrary scale-free networksWe study a recent model of random networks based on the presence of an intrinsic character of the vertices called fitness. The vertex fitnesses are drawn from a given probability distribution density. The edges between pairs of vertices are drawn according to a linking probability function depending on the fitnesses of the two vertices involved. We study here different choices for the probability distribution densities and the linking functions. We find that, irrespective of the particular choices, the generation of scale-free networks is straightforward. We then derive the general conditions under which scale-free behavior appears. This model could then represent a possible explanation for the ubiquity and robustness of such structures.Vito D. P. ServedioGuido Caldarelliguido.caldarelli@imtlucca.itPaolo Buttà2012-02-14T13:52:35Z2018-03-08T17:08:11Zhttp://eprints.imtlucca.it/id/eprint/1118This item is in the repository with the URL: http://eprints.imtlucca.it/id/eprint/11182012-02-14T13:52:35ZEmergence of complexity in financial networks We present here a brief summary of the various possible applications of network theory in the field of finance. Since we want to characterize different systems by means of simple and universal features, graph theory could represent a rather powerful methodology. In the following we report our activity in three different subfields, namely the board and director networks, the networks formed by prices correlations and the stock ownership networks. In most of the cases these three kind of networks display scale-free properties making them interesting in their own. Nevertheless, we want to stress here that the main utility of this methodology is to provide new measures of the real data sets in order to validate the different models.Guido Caldarelliguido.caldarelli@imtlucca.itStefano BattistonDiego Garlaschellidiego.garlaschelli@imtlucca.itMichele Catanzaro2012-02-14T13:25:27Z2012-02-14T13:25:27Zhttp://eprints.imtlucca.it/id/eprint/1117This item is in the repository with the URL: http://eprints.imtlucca.it/id/eprint/11172012-02-14T13:25:27ZThe corporate boards networksIn this work we apply network theory to detect in a quantitative fashion some of the characters of the system composed by companies and their boards of directors. Modelling this as a bipartite graph, we can derive two networks (one for the companies and one for the directors) and apply to them the standard graph analysis instruments. The emerging picture shows an environment where the exchange of information and mutual influences, conveyed by interlocks between boards, is predominant. Such a result should be taken into account when modelling this system.Guido Caldarelliguido.caldarelli@imtlucca.itMichele Catanzaro2012-02-14T13:19:55Z2012-02-14T13:19:55Zhttp://eprints.imtlucca.it/id/eprint/1116This item is in the repository with the URL: http://eprints.imtlucca.it/id/eprint/11162012-02-14T13:19:55ZSocial network growth with assortative mixingNetworks representing social systems display specific features that put them apart from biological and technological ones. In particular, the number of links attached to a node is positively correlated to that of its nearest neighbours. We develop a model that reproduces this feature, starting from microscopical mechanisms of growth. The statistical properties arising from the simulations are in good agreement with those of the real-world social networks of scientists co-authoring papers in condensed matter physics. Moreover, the model highlights the determinant role of correlations in shaping the network's topology.Michele CatanzaroGuido Caldarelliguido.caldarelli@imtlucca.itLuciano Pietronero2012-02-13T14:15:03Z2012-02-13T14:15:03Zhttp://eprints.imtlucca.it/id/eprint/1113This item is in the repository with the URL: http://eprints.imtlucca.it/id/eprint/11132012-02-13T14:15:03ZCommunities Detection in Large NetworksWe develop an algorithm to detect community structure in complex networks. The algorithm is based on spectral methods and takes into account weights and links orientations. Since the method detects efficiently clustered nodes in large networks even when these are not sharply partitioned, it turns to be specially suitable to the analysis of social and information networks. We test the algorithm on a large-scale data-set from a psychological experiment of word association. In this case, it proves to be successful both in clustering words, and in uncovering mental association patterns. Andrea CapocciVito D. P. ServedioGuido Caldarelliguido.caldarelli@imtlucca.itFrancesca Colaiori2011-10-31T15:01:12Z2011-11-03T13:19:36Zhttp://eprints.imtlucca.it/id/eprint/988This item is in the repository with the URL: http://eprints.imtlucca.it/id/eprint/9882011-10-31T15:01:12ZOn the behavior of the conditional expectations in Skorohod representation theoremIn this paper we deal with the Skorohod representation of a given system of probability measures. More precisely, we give conditions for the existence of a Skorohod representation (X,(Xn)) with the following additional property: for each real number p⩾1 and each real random variable Z in Lp, the conditional expectation E[Z|Xn] converges in Lp to the conditional expectation E[Z|X]
Irene Crimaldiirene.crimaldi@imtlucca.it2011-10-18T09:29:48Z2011-10-18T09:29:48Zhttp://eprints.imtlucca.it/id/eprint/950This item is in the repository with the URL: http://eprints.imtlucca.it/id/eprint/9502011-10-18T09:29:48ZDocumenti per lo scultore Agostino Bergamini ed i pittori Giacinto Botti e Filippo LatiniEmanuele Pellegriniemanuele.pellegrini@imtlucca.it2011-10-18T09:24:14Z2011-10-18T09:24:14Zhttp://eprints.imtlucca.it/id/eprint/949This item is in the repository with the URL: http://eprints.imtlucca.it/id/eprint/9492011-10-18T09:24:14ZAlcune precisazioni sulle settecentesche descrizioni di UrbinoEmanuele Pellegriniemanuele.pellegrini@imtlucca.it2011-10-13T09:58:52Z2011-10-13T13:07:07Zhttp://eprints.imtlucca.it/id/eprint/931This item is in the repository with the URL: http://eprints.imtlucca.it/id/eprint/9312011-10-13T09:58:52ZIntorno a Giovan Camillo SagrestaniEmanuele Pellegriniemanuele.pellegrini@imtlucca.it2011-10-13T09:13:38Z2011-10-13T09:13:38Zhttp://eprints.imtlucca.it/id/eprint/929This item is in the repository with the URL: http://eprints.imtlucca.it/id/eprint/9292011-10-13T09:13:38ZIl carteggio von Schlosser-Ragghianti : qualche anticipazioneEmanuele Pellegriniemanuele.pellegrini@imtlucca.it2011-10-13T09:06:25Z2011-10-13T09:06:25Zhttp://eprints.imtlucca.it/id/eprint/928This item is in the repository with the URL: http://eprints.imtlucca.it/id/eprint/9282011-10-13T09:06:25ZTra inventari e testamenti : uno sguardo all'interno di palazzi e ville della Valdinievole Emanuele Pellegriniemanuele.pellegrini@imtlucca.it2011-10-12T09:24:41Z2011-10-12T09:24:41Zhttp://eprints.imtlucca.it/id/eprint/915This item is in the repository with the URL: http://eprints.imtlucca.it/id/eprint/9152011-10-12T09:24:41Z(a cura di) Beni culturali: prospettive e incognite del nuovo Codice : atti del Convegno, Pisa, 6 novembre 2003Contestualmente all'entrata in vigore del Nuovo Codice dei beni culturali, il primo maggio del 2004, vengono pubblicati gli atti del primo convegno nazionale dedicato al nuovo testo legislativo, tenutosi nell'Aula magna storica dell'Università di Pisa il 6 novembre del 2003. Il volume raccoglie gli interventi della giornata di studi, nei quali, a poco più di due mesi dall'approvazione definitiva della legge, avvenuta il successivo 16 gennaio, venivano prese in esame e discusse da autorevoli e qualificati studiosi bozze avanzate, ancorché non definitive, del Codice, ma anche tematiche più ampie legate al mondo dei beni culturali, all'Università, alle Soprintendenze. I singoli contributi così come la tavola rotonda conclusiva testimoniano della vivacità del dibattito e dell'attualità dei temi affrontati. Il libro si chiude con una appendice in cui viene pubblicato per intero il testo del Nuovo Codice e una mozione redatta a conclusione dei lavori.Gerardo De SimoneEmanuele Pellegriniemanuele.pellegrini@imtlucca.it2011-09-14T14:56:22Z2014-12-02T09:53:00Zhttp://eprints.imtlucca.it/id/eprint/881This item is in the repository with the URL: http://eprints.imtlucca.it/id/eprint/8812011-09-14T14:56:22ZSchema e valori, vita e immaginiMaria Luisa Catonimarialuisa.catoni@imtlucca.it2011-08-09T09:09:41Z2011-08-12T15:18:50Zhttp://eprints.imtlucca.it/id/eprint/778This item is in the repository with the URL: http://eprints.imtlucca.it/id/eprint/7782011-08-09T09:09:41ZIl concetto di mercato efficiente nella teoria economicaDavide Ticchidavide.ticchi@imtlucca.itGiuseppe Travaglini2011-07-27T08:54:00Z2011-08-05T13:56:12Zhttp://eprints.imtlucca.it/id/eprint/562This item is in the repository with the URL: http://eprints.imtlucca.it/id/eprint/5622011-07-27T08:54:00ZStabilizing receding horizon control of piecewise linear systems: An LMI approachReceding horizon control has recently been used for regulating discrete-time Piecewise Affine (PWA) systems. One of the obstructions for implementation consists in guaranteeing closed-loop stability a priori. This is an issue that has only been addressed marginally in the literature. In this paper we present an extension of the terminal cost method for guaranteeing stability in receding horizon control to the class of unconstrained Piecewise Linear (PWL) systems. A linear matrix inequalities set-up is developed to calculate the terminal weight matrix and the auxiliary feedback gains that ensure stability for quadratic cost based receding horizon control. It is shown that the PWL statefeedback control law employed in the stability proof globally asymptotically stabilizes the origin of the PWL system. The additional conditions needed to extend these results to constrained PWA systems are also pointed out. The implementation of the proposed method is illustrated by an example.Mircea LazarW.P.M.H. HeemelsSiep WeilandAlberto Bemporadalberto.bemporad@imtlucca.it2011-07-01T10:02:40Z2011-08-31T14:40:39Zhttp://eprints.imtlucca.it/id/eprint/686This item is in the repository with the URL: http://eprints.imtlucca.it/id/eprint/6862011-07-01T10:02:40ZMarket Structure And Drug Innovation An explosion of knowledge and a growing array of tools and technologies have transformed modern drug R&D, while its cost has risen by a sizable amount. At the same time, the unchecked increase in health care and prescription drug spending has spawned cost containment policies that are restricting the demand for drugs in all major markets. This Perspective explores the interplay between technological advances and regulatory policies and their likely impact on the dynamics of the pharmaceutical industry. Fabio Pammollif.pammolli@imtlucca.itMassimo Riccabonimassimo.riccaboni@imtlucca.it2011-06-30T14:25:51Z2011-08-31T14:40:39Zhttp://eprints.imtlucca.it/id/eprint/650This item is in the repository with the URL: http://eprints.imtlucca.it/id/eprint/6502011-06-30T14:25:51ZStatistical properties of business firms structure and growthWe analyze a database comprising quarterly sales of 55624 pharmaceutical products commercialized by 3939 pharmaceutical firms in the period 1992-2001. We study the probability density function (PDF) of growth in firms and product sales and find that the width of the PDF of growth decays with the sales as a power law with exponent β = 0.20 ± 0.01. We also find that the average sales of products scales with the firm sales as a power law with exponent α = 0.57 ± 0.02. And that the average number products of a firm scales with the firm sales as a power law with exponent γ = 0.42 ± 0.02. We compare these findings with the predictions of models proposed till date on growth of business firms.Fabio Pammollif.pammolli@imtlucca.itKaushik MatiaDongfeng FuSergey V. BuldyrevMassimo Riccabonimassimo.riccaboni@imtlucca.itH. Eugene Stanley2011-06-30T14:25:42Z2011-08-31T14:40:39Zhttp://eprints.imtlucca.it/id/eprint/651This item is in the repository with the URL: http://eprints.imtlucca.it/id/eprint/6512011-06-30T14:25:42ZDynamic competition in pharmaceuticals:
Patent expiry, generic penetration, and industry structureThis paper investigates patterns of industrial dynamics and competition in the pharmaceutical industry, with particular reference to the consequences of patent expiry in different countries. We focus on the competition at the level of single chemical entities, distinguishing between original brands and generic products. Quarterly data, spanning from July 1987 to December 1998, on sales of pharmaceutical products in four countries (USA, UK, Germany, and France) constitute the basis of our analysis. All the products containing major molecules whose patent expiration date lies between 1986 and 1996 are included in our sample. We show how diffusion of generics is linked to the characteristics of the market and investigate how price dynamics of original products are affected by generic competition. Our empirical investigation shows that the dynamics of drug prices and the competition by generic drugs vary significantly across countries. This heterogeneity notwithstanding, a clear distinction seems to emerge. On the one hand, systems that rely on market-based competition in pharmaceuticals promote a clear distinction between firms that act as innovators and firms that act as imitators after patent expiry. Here, original products enjoy premium prices and exclusivity profits under patent protection, and face fierce price competition after patent expiry. On the other hand, in systems that rely on administered prices, penetration by generic drugs tends to be rather limited. Its descriptive and preliminary nature notwithstanding, our analysis seems to have relevant implications at different levels of generality, especially for Europe.Fabio Pammollif.pammolli@imtlucca.itLaura MagazziniMassimo Riccabonimassimo.riccaboni@imtlucca.it2011-06-30T14:25:35Z2011-08-31T14:40:39Zhttp://eprints.imtlucca.it/id/eprint/652This item is in the repository with the URL: http://eprints.imtlucca.it/id/eprint/6522011-06-30T14:25:35ZTechnological Competencies in Networks of InnovatorsFabio Pammollif.pammolli@imtlucca.itMassimo Riccabonimassimo.riccaboni@imtlucca.it2011-06-30T14:25:27Z2014-07-02T10:38:17Zhttp://eprints.imtlucca.it/id/eprint/654This item is in the repository with the URL: http://eprints.imtlucca.it/id/eprint/6542011-06-30T14:25:27ZThe nature and extent of the market for technology in biopharmaceuticalsThe biopharmaceutical industry is a typical example of the development of technological collaborations, as well as of technological competition, between larger established firms and smaller high-tech specialist firms (the so-called New Biotechnology Firms — NBFs). These two types of firms perform innovative activities at different stages, with different degree of risk, and with different probability of failure. By using a comprehensive database of 2078 drug R&D projects promoted all over the world during the 1990s, this study assesses the different performance of R&D processes conducted under different governance structures, most notably projects that are fully internalised by the companies vis-àvis projects developed in collaboration with other firms. Moreover, this study compares the different specialisation and performance of large drug companies with respect to the NBFs. Results show that the established pharmaceutical companies have comparative advantages with respect to NBFs in drug development, while there is no advantage related to scale in drug discovery. Furthermore, NBFs undertake less risky project, which are more likely to fail at earlier clinical stages.Ashish AroraAlfonso GambardellaFabio Pammollif.pammolli@imtlucca.itMassimo Riccabonimassimo.riccaboni@imtlucca.it2011-06-30T14:24:51Z2011-08-31T14:40:39Zhttp://eprints.imtlucca.it/id/eprint/661This item is in the repository with the URL: http://eprints.imtlucca.it/id/eprint/6612011-06-30T14:24:51ZPharmaceuticals Analysed through the Lens of a Sectoral Innovation SystemFabio Pammollif.pammolli@imtlucca.itMaureen McKelveyLuigi Orsenigo2011-03-30T10:14:10Z2011-07-11T14:21:54Zhttp://eprints.imtlucca.it/id/eprint/240This item is in the repository with the URL: http://eprints.imtlucca.it/id/eprint/2402011-03-30T10:14:10ZIl trasferimento di dati personali in InternetNota a Corte di Giustizia delle Comunità europee, sentenza 6 novembre 2003, causa C-101/01, Lindqvist.Andrea Giannaccaria.giannaccari@imtlucca.it2011-03-30T10:13:28Z2011-07-11T14:21:54Zhttp://eprints.imtlucca.it/id/eprint/246This item is in the repository with the URL: http://eprints.imtlucca.it/id/eprint/2462011-03-30T10:13:28ZStandard e protocolli: al crocevia tra definizione e monopolizzazione del mercatoAndrea Giannaccaria.giannaccari@imtlucca.it2011-03-23T11:22:23Z2011-07-11T14:27:36Zhttp://eprints.imtlucca.it/id/eprint/210This item is in the repository with the URL: http://eprints.imtlucca.it/id/eprint/2102011-03-23T11:22:23ZSu alcune differenze tra Mises e LeoniAntonio Masalaa.masala@imtlucca.it2011-03-18T14:46:41Z2014-01-24T14:29:12Zhttp://eprints.imtlucca.it/id/eprint/207This item is in the repository with the URL: http://eprints.imtlucca.it/id/eprint/2072011-03-18T14:46:41ZCrisi della filosofia politica e teoria del liberalismoAntonio Masalaa.masala@imtlucca.it2011-03-10T10:29:27Z2011-07-11T14:27:36Zhttp://eprints.imtlucca.it/id/eprint/198This item is in the repository with the URL: http://eprints.imtlucca.it/id/eprint/1982011-03-10T10:29:27ZDiritto e Stato, un contratto tra uomini liberiAntonio Masalaa.masala@imtlucca.it2011-03-03T14:47:16Z2011-07-11T13:54:05Zhttp://eprints.imtlucca.it/id/eprint/140This item is in the repository with the URL: http://eprints.imtlucca.it/id/eprint/1402011-03-03T14:47:16ZComplotto contro la Francia: l’antiamericanismo nella stampa gollista della IV RepubblicaLucia Bonfreschilucia.bonfreschi@imtlucca.it2011-02-15T10:29:10Z2011-07-11T14:24:17Zhttp://eprints.imtlucca.it/id/eprint/67This item is in the repository with the URL: http://eprints.imtlucca.it/id/eprint/672011-02-15T10:29:10ZBack to Kant's ‘Sapere aude!’Stefano Gatteistefano.gattei@imtlucca.it2011-02-15T10:28:52Z2011-07-11T14:24:17Zhttp://eprints.imtlucca.it/id/eprint/68This item is in the repository with the URL: http://eprints.imtlucca.it/id/eprint/682011-02-15T10:28:52ZKarl Popper's Philosophical BreakthroughDespite his well-known deductivism, in his early (unpublished) writings, Popper held an inductivist position. Up to 1929 epistemology entered Popper's reflections only as far as the problem was that of the justification of the scientific character of these fields of research. However, in that year, while surveying the history of non-Euclidean geometries, Popper explicitly discussed the cognitive status of geometry without referring to psycho-pedagogical aspects, thus turning from cognitive psychology to the logic and methodology of science. As a consequence of his reflections on the problematic relationship between geometrical-mathematical constructions and physical reality Popper was able to get over a too direct notion of such a relationship, cast doubts on inductive inference and started conceiving in a new (strictly non-inductivist) manner the relationship between theoretical and observational propositions.Stefano Gatteistefano.gattei@imtlucca.it