1.

Record Nr.

UNISA996466504203316

Autore

Veselić Ivan <1973->

Titolo

Existence and regularity properties of the integrated density of states of random Schrödinger operators / / Ivan Veselić

Pubbl/distr/stampa

Berlin ; ; Heidelberg : , : Springer, , [2008]

©2008

ISBN

3-540-72691-8

Edizione

[1st ed. 2008.]

Descrizione fisica

1 online resource (X, 147 p.)

Collana

Lecture notes in mathematics ; ; 1917

Disciplina

515.724

Soggetti

Schrödinger operator

Spectral energy distribution

Quantum theory

Lingua di pubblicazione

Inglese

Formato

Materiale a stampa

Livello bibliografico

Monografia

Note generali

"1617-9692 (electronic ed.)."

Nota di bibliografia

Includes bibliographical references (pages [113]-138) and index.

Nota di contenuto

Random Operators -- Existence of the Integrated Density of States -- Wegner Estimate -- Wegner’s Original Idea. Rigorous Implementation -- Lipschitz Continuity of the IDS.

Sommario/riassunto

The theory of random Schrödinger operators is devoted to the mathematical analysis of quantum mechanical Hamiltonians modeling disordered solids. Apart from its importance in physics, it is a multifaceted subject in its own right, drawing on ideas and methods from various mathematical disciplines like functional analysis, selfadjoint operators, PDE, stochastic processes and multiscale methods. The present text describes in detail a quantity encoding spectral features of random operators: the integrated density of states or spectral distribution function. Various approaches to the construction of the integrated density of states and the proof of its regularity properties are presented. The setting is general enough to apply to random operators on Riemannian manifolds with a discrete group action. References to and a discussion of other properties of the IDS are included, as are a variety of models beyond those treated in detail here.



2.

Record Nr.

UNINA9910790836103321

Autore

Kassel Kerul

Titolo

The thinking executive's guide to sustainability / / Kerul Kassel

Pubbl/distr/stampa

New York, New York (222 East 46th Street, New York, NY 10017) : , : Business Expert Press, , 2014

ISBN

1-78402-486-4

1-60649-420-1

Edizione

[First edition.]

Descrizione fisica

1 online resource (202 p.)

Collana

Environmental and social sustainability for business advantage collection, , 2327-3348

Disciplina

333.7

Soggetti

Sustainability

Social responsibility of business

Lingua di pubblicazione

Inglese

Formato

Materiale a stampa

Livello bibliografico

Monografia

Note generali

Part of: 2014 digital library.

Nota di bibliografia

Includes bibliographical references (pages 157-170) and index.

Nota di contenuto

1. Systems simplified -- 2. What is meant by sustainability and who defines it -- 3. Systems and sustainability -- 4. Commerce as a system -- 5. Why industry is crucial to sustainability -- 6. Corporate sustainability frameworks, metrics, and indices -- 7. Where to start in your business -- Notes -- References -- Index.

Sommario/riassunto

We live in an increasingly global economy in which the effects of shrunken economies, broadened communication, and widespread meteorological incidents associated with climate change are leaving virtually no one untouched. As a result, a working knowledge of concepts such as the triple bottom line and sustainability have become mandatory. Systems thinking, foundational for grasping these concepts, is based on transdisciplinary theories, deriving in part from biology, physics, economics, philosophy, computer science, engineering, geography, and other sciences. Specifically it is the study of systems, including all life-forms, climate phenomena, and even in human learning and organizational processes, that regulate themselves through feedback.