L' enzima dell'immortalità : La telomerasi: la scoperta scientifica che fermerà l'invecchiamento / Michael Fossel ; [traduzione dall'inglese a cura di Daniele Ballarini]

• Record Nr.: UNIBAS000003996
• Autore: Fossel, Michael
• Pubbl/distr/stampa: New York : Piemme, c1998
• ISBN: 88-384-3165-5
• Descrizione fisica: 347 p. ; 24 cm.
• Disciplina: 612.68
• Soggetti: Longevità - Ricerche popolari
• Lingua di pubblicazione: Italiano
• Formato: Materiale a stampa
• Livello bibliografico: Monografia

Random walks on disordered media and their scaling limits : École d'Été de Probabilités de Saint-Flour XL - 2010 / Takashi Kumagai

• Record Nr.: UNISALENTO991003263669707536
• Autore: Kumagai, Takashi
• Pubbl/distr/stampa: Cham [Switzerland] : Springer, c2014
• ISBN: 9783319031514
• Descrizione fisica: x, 147 p. : ill. ; 24 cm
• Collana: Lecture notes in mathematics, 0075-8434 ; 2101
• Classificazione: AMS 60G50; AMS 05C81; AMS 31C20; AMS 35K08; LC QA274.73
• Disciplina: 519.2
• Soggetti: Random walks; Potential theory (Mathematics); Distribution (Probability theory)
• Lingua di pubblicazione: Inglese
• Formato: Materiale a stampa
• Livello bibliografico: Monografia
• Nota di bibliografia: Includes bibliographical references (pages 135-143) and index
• Nota di contenuto: Introduction ; Weighted graphs and the associated Markov chains ; Heat kernel estimates general theory ; Heat kernel estimates using effective resistance ; Heat kernel estimates for random weighted graphs ; Alexander-Orbach conjecture holds when two-point functions behave nicely ; Further results for random walk on IIC ; Random conductance model
• Sommario/riassunto: In these lecture notes, we will analyze the behavior of random walk on disordered mediaby means ofboth probabilistic and analytic methods, and will study the scalinglimits. We will focus on the discrete potential theory and how the theory is effectively used in the analysis of disordered media.Thefirst few chapters of the notes can be used as an introduction to discrete potential theory. Recently, there has beensignificantprogress on thetheoryof random walkon disordered media such as fractals and random media.Random walk on a percolation cluster('the ant in the labyrinth')is one of the typical examples. In 1986, H. Kesten showedtheanomalous behavior of a random walk on a percolation cluster at critical probability. Partly motivated by this work, analysis and diffusion processes on fractals have been developed since the late eighties. As a result, various new methods have been produced to estimate heat kernels on disordered media. These developments are summarized in the notes

Gli Stati Uniti e la Provincia italiana, 1943-1945 : politica ed economia secondo gli analisti del servizio segreto americano / Luigi Rossi

• Record Nr.: UNICASVEA0020334
• Autore: Rossi, Luigi <1948- >
• Pubbl/distr/stampa: Napoli, : Edizioni scientifiche italiane, c1990
• ISBN: 8871042115
• Descrizione fisica: 204 p. ; 21 cm
• Collana: Biblioteca storica ; 9
• Disciplina: 940.54
• Soggetti: Italia e Stati Uniti d'America - 1943-1945; Italia - Politica ed Economia - Giudizi americani - 1943-1945
• Lingua di pubblicazione: Italiano
• Formato: Materiale a stampa
• Livello bibliografico: Monografia

Unsupervised Classification : Similarity Measures, Classical and Metaheuristic Approaches, and Applications / / by Sanghamitra Bandyopadhyay, Sriparna Saha

• Record Nr.: UNINA9910437957903321
• Autore: Bandyopadhyay Sanghamitra
• Pubbl/distr/stampa: Berlin, Heidelberg : , : Springer Berlin Heidelberg : , : Imprint : Springer, , 2013
• ISBN: 3-642-32451-7
• Edizione: [1st ed. 2013.]
• Descrizione fisica: 1 online resource (270 p.)
• Disciplina: 001.534
• Soggetti: Artificial intelligence; Bioinformatics; Computer networks; Artificial Intelligence; Computational and Systems Biology; Computer Communication Networks
• Lingua di pubblicazione: Inglese
• Formato: Materiale a stampa
• Livello bibliografico: Monografia
• Note generali: Description based upon print version of record.
• Nota di bibliografia: Includes bibliographical references and index.
• Nota di contenuto: Chap. 1 Introduction -- Chap. 2 Some Single- and Multiobjective Optimization Techniques -- Chap. 3 SimilarityMeasures -- Chap. 4 Clustering Algorithms -- Chap. 5 Point Symmetry Based Distance Measures and their Applications to Clustering -- Chap. 6 A Validity Index Based on Symmetry: Application to Satellite Image Segmentation -- Chap. 7 Symmetry Based Automatic Clustering -- Chap. 8 Some Line Symmetry Distance Based Clustering Techniques -- Chap. 9 Use of Multiobjective Optimization for Data Clustering -- References -- Index.
• Sommario/riassunto: Clustering is an important unsupervised classification technique where data points are grouped such that points that are similar in some sense belong to the same cluster. Cluster analysis is a complex problem as a variety of similarity and dissimilarity measures exist in the literature. This is the first book focused on clustering with a particular emphasis on symmetry-based measures of similarity and metaheuristic approaches. The aim is to find a suitable grouping of the input data set so that some criteria are optimized, and using this the authors frame ; the clustering problem as an optimization one where the objectives to be optimized may represent different characteristics such as compactness, symmetrical compactness, separation between clusters, or connectivity within a cluster. They explain the techniques in detail and outline many detailed applications in data mining, remote sensing and brain imaging, gene expression data analysis, and face detection. The book will be useful to graduate students and researchers in computer science, electrical engineering, system science, and information technology, both as a text and as a reference book. It will also be useful to researchers and practitioners in industry working on pattern recognition, data mining, soft computing, metaheuristics, bioinformatics, remote sensing, and brain imaging.