Differential-algebraic systems [[electronic resource] ] : analytical aspects and circuit applications / / Ricardo Riaza

• Record Nr.: UNINA9910453278503321
• Autore: Riaza Ricardo
• Pubbl/distr/stampa: Singapore ; ; Hackensack, NJ, : World Scientific, 2008
• ISBN: 1-281-93401-1; 9786611934019; 981-279-181-7
• Descrizione fisica: 1 online resource (344 p.)
• Disciplina: 512.56; 512/.56; 621.3815
• Soggetti: Differential-algebraic equations; Electric circuits - Mathematical models; Electronic books.
• Lingua di pubblicazione: Inglese
• Formato: Materiale a stampa
• Livello bibliografico: Monografia
• Note generali: Description based upon print version of record.
• Nota di bibliografia: Includes bibliography (p. 309-324) and index.
• Nota di contenuto: Preface; Contents; 1. Introduction; 1.1 Historical remarks: Different origins, different names; 1.2 DAE analysis; 1.2.1 Indices; 1.2.2 Dynamics and singularities; 1.2.3 Numerical aspects; 1.3 State vs. semistate modeling; 1.4 Formulations; 1.4.1 Input-output descriptions; 1.4.2 Leading terms; 1.4.3 Semiexplicit, semilinear and quasilinear DAEs; 1.4.3.1 Semiexplicit and semilinear DAEs; 1.4.3.2 Hessenberg DAEs; 1.4.3.3 Quasilinear DAEs; 1.5 Contents and structure of the book; Analytical aspects of DAEs; 2. Linear DAEs and projector-based methods; 2.1 Linear time-invariant DAEs; 2.1.1 Matrix pencils and the Kronecker canonical form 2.1.2 Solving linear time-invariant DAEs via the KCF; 2.1.3 A glance at projector-based techniques; 2.1.3.1 Index one characterization via projectors; 2.1.3.2 Decoupling of linear time-invariant index one DAEs; 2.1.3.3 Geometrical remarks; 2.1.3.4 Higher index problems; 2.1.3.5 Some auxiliary properties of the projectors Pi and Qi; 2.2 Properly stated linear time-varying DAEs; 2.2.1 On standard form index one problems; 2.2.2 Properly stated leading terms; 2.2.3 P-projectors: Matrix chain ; and the tractability index; 2.2.3.1 Matrix chain; 2.2.3.2 The tractability index of regular linear DAEs 2.2.4 The Π-framework; 2.2.4.1 Alternative chain construction; 2.2.4.2 Equivalence of the P- and Π-chains; 2.2.4.3 Some properties of the projectors Πi and Mi; 2.2.5 Decoupling; 2.2.6 A tutorial example; 2.2.6.1 Index one; 2.2.6.2 Index two; 2.2.6.3 Index three; 2.2.7 Regular points; 2.3 Standard formlinear DAEs; 2.3.1 The tractability index of standard form DAEs; 2.3.2 Decoupling; 2.3.3 Time-invariant problems revisited; 2.4 Other approaches for linear DAEs: Reduction techniques; 3. Nonlinear DAEs and reduction methods; 3.1 Semiexplicit index one DAEs 3.2 Hessenberg systems; 3.3 Some notions from differential geometry; 3.4 Quasilinear DAEs: The geometric index; 3.4.1 The framework of Rabier and Rheinboldt; 3.4.2 Index zero and index one points; 3.4.2.1 Index zero points; 3.4.2.2 Index one points; 3.4.3 Higher index points; 3.4.3.1 Index two points; 3.4.3.2 Index ν points; 3.4.4 Manifold sequences and locally regular DAEs; 3.4.4.1 Regular manifold, solution manifold, and locally regular DAEs; 3.4.4.2 Manifold sequences within different reduction approaches; 3.4.5 Local equivalence; 3.4.5.1 The index: Independence of reduction pairs and invariance 3.4.5.2 C-conjugacy of state space descriptions; 3.4.5.3 On the link between local equivalence and reduction operators; 3.4.6 Examples; 3.4.6.1 Semiexplicit index one DAEs; 3.4.6.2 Hessenberg DAEs; 3.4.6.3 A locally regular DAE with di.erent indices; 3.4.7 Nonautonomous problems; 3.4.7.1 Geometric index and reduction in the nonautonomous context; 3.4.7.2 Semiexplicit index one DAEs; 3.4.7.3 Nonautonomous Hessenberg DAEs; 3.4.7.4 Schur reduction and semiexplicit DAEs; 3.5 Dynamical aspects; 3.6 Reduction methods for fully nonlinear DAEs
• Sommario/riassunto: Differential-algebraic equations (DAEs) provide an essential tool for system modeling and analysis within different fields of applied sciences and engineering. This book addresses modeling issues and analytical properties of DAEs, together with some applications in electrical circuit theory.Beginning with elementary aspects, the author succeeds in providing a self-contained and comprehensive presentation of several advanced topics in DAE theory, such as the full characterization of linear time-varying equations via projector methods or the geometric reduction of nonlinear systems. Recent resul

Mineral Policies

• Record Nr.: UNINA9910558094803321
• Pubbl/distr/stampa: Brooklyn, NY, : punctum books, 2022
• Descrizione fisica: 1 online resource (112 p.)
• Disciplina: 709.4935
• Soggetti: Albania; Exhibition catalogues and specific collections; Performance art; Exhibition catalogs.; Albania; Albania Bulqizë (Rrethi)
• Lingua di pubblicazione: Inglese
• Formato: Materiale a stampa
• Livello bibliografico: Monografia
• Sommario/riassunto: Mineral Policies provides a record of an art residency organized by ZETA Center for Contemporary Art in the mining region of Bulqiza in northeastern Albania, where four artists and activists from Albania, Blerta Hoçia, Diana Malaj, Pleurad Xhafa, and Ergin Zaloshnja, created a collective body of works in close proximity with the local miners, while still maintaining their own discrete sphere of action. This residency followed by a public exhibition, Each Strike Leads to the Next, featuring video works produced during the residency as well as a series of object, curated by Vincent W.J. van Gerven Oei, director of the Department of Eagles in Tirana. This publication includes documentation of the residency and the exhibition, as well the record of a public discussion between curator Van Gerven Oei, former Minister of Finance Arben Malaj, mining engineer Genc Myftiu, and mining worker Bardhul Alla, moderated by cultural journalist Elsa Demo and an interview of cultural theorist Jonida Gashi and Van Gerven Oei with the artists. Mineral Policies documents an important attempt of present-day Albanian artists to reflect on and align themselves with workers and labor activities within a political climate in which neoliberal extractivism and ; mafia-controlled local and national government have seriously compromised modes of solidarity and survival.