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1. |
Record Nr. |
UNISA996466605303316 |
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Autore |
Favini Angelo |
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Titolo |
Degenerate Nonlinear Diffusion Equations [[electronic resource] /] / by Angelo Favini, Gabriela Marinoschi |
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Pubbl/distr/stampa |
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Berlin, Heidelberg : , : Springer Berlin Heidelberg : , : Imprint : Springer, , 2012 |
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ISBN |
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Edizione |
[1st ed. 2012.] |
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Descrizione fisica |
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1 online resource (XXI, 143 p. 12 illus., 9 illus. in color.) |
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Collana |
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Lecture Notes in Mathematics, , 0075-8434 ; ; 2049 |
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Disciplina |
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Soggetti |
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Partial differential equations |
Calculus of variations |
Applied mathematics |
Engineering mathematics |
Partial Differential Equations |
Calculus of Variations and Optimal Control; Optimization |
Applications of Mathematics |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Note generali |
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Bibliographic Level Mode of Issuance: Monograph |
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Nota di bibliografia |
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Includes bibliographical references (p. 135-139) and index. |
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Nota di contenuto |
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1 Parameter identification in a parabolic-elliptic degenerate problem -- 2 Existence for diffusion degenerate problems -- 3 Existence for nonautonomous parabolic-elliptic degenerate diffusion Equations -- 4 Parameter identification in a parabolic-elliptic degenerate problem. |
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Sommario/riassunto |
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The aim of these notes is to include in a uniform presentation style several topics related to the theory of degenerate nonlinear diffusion equations, treated in the mathematical framework of evolution equations with multivalued m-accretive operators in Hilbert spaces. The problems concern nonlinear parabolic equations involving two cases of degeneracy. More precisely, one case is due to the vanishing of the time derivative coefficient and the other is provided by the vanishing of the diffusion coefficient on subsets of positive measure of the domain. From the mathematical point of view the results presented in these notes can be considered as general results in the theory of degenerate nonlinear diffusion equations. However, this work does not seek to present an exhaustive study of degenerate diffusion equations, |
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but rather to emphasize some rigorous and efficient techniques for approaching various problems involving degenerate nonlinear diffusion equations, such as well-posedness, periodic solutions, asymptotic behaviour, discretization schemes, coefficient identification, and to introduce relevant solving methods for each of them. |
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2. |
Record Nr. |
UNINA9910688485703321 |
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Autore |
Riva Giuseppe |
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Titolo |
Identity and Relationships in Online Communities / / Giuseppe Riva, Brenda K. Wiederhold, Pietro Cipresso |
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Pubbl/distr/stampa |
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Warsaw ; Berlin : , : De Gruyter, , 2016 |
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Descrizione fisica |
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1 online resource (xvi, 227 pages) : illustrations (some color) |
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Collana |
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Psychology of Social Networking ; ; Volume 2 |
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Disciplina |
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Soggetti |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Nota di contenuto |
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Intro; Introduction; 1 A Collective Picture of What MakesPeople Happy: Words Representing SocialRelationships, not Money, are Recurrent withthe Word 'Happiness' in Online Newspapers; 2 The Online Calming Effect: Does the InternetProvide a More Comfortable Modality forConducting Psychotherapy?; 3 Feeling Anxious without It: Characteristicsof People Prone to Facebook Addiction; 4 What Determinants Matter When UsersEngage in Particular Collaborative StorytellingWebsites? Exploring Attractive GamificationFeatures and Design Guidelines. 5 Assessment Of Risk Behaviors RelatedTo Substance Use, Bullying and Alterationsin Body Image in Adolescents Through a 3DSimulation Program6 Play With My Team- Modeling OnlineGame Players' Teamwork Model in MassivelyMultiplier Online Role Playing Games(MMORPGs); 7 Virtual Environments With Chroma-KeyingVideo Capture In Psychological Therapy; 8 Sharing personal experiences and offeringadvice within online health-based socialnetworks; 9 The Digital Rage: How Anger is ExpressedOnline. 10 College Students' Use of CommunicationTechnology with Parents: |
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Influences ofDistance, Gender, and Social Presence11 Internet addiction: an cross-culturalperspective; 12 My pixels or my friends? Game charactersas a lens for understanding user avatars insocial networks; 13 Problem Mobile Phone Use in Spanish andBritish Adolescents: First steps towards across-cultural research in Europe; 14 Generalized Problematic Internet Use Scale2: update on the psychometric propertiesamong Italian young adults.; 15 Smartphone for social networking:methodological aspects. |
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Sommario/riassunto |
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In order to 'be online', an individual has to create an online presence. This online self is presented in different ways, with diverse goals and aims in order to engage in different social media activities and to achieve desired outcomes. The authors propose a wide overview of the psychology of social networking and its implications in our lives. |
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