Download or read book Green Equilibrium written by Christopher Wills and published by OUP Oxford. This book was released on 2013-03-28 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: In Green Equilibrium, Christopher Wills explains the rules by which ecosystems maintain a diversity of interdependent species, in particular the balance of predators and prey. Wills is both an eminent academic and a hugely experienced field-biologist. In presenting the concept of 'green equilibrium', he draws on a fascinating range of examples, including coral reefs off the densely populated Philippines, the isolated and densely forested valleys of Papua New Guinea, the changing Himalayan kingdom of Bhutan, and a Californian ranch being allowed to return to a wild state. In each case he assesses the impact of modern changes and attempts at conservation on these delicately balanced ecosystems. Wills shows how human populations, too, are an integral part of the picture. We now know from genetic evidence that over the course of history, as humans spread out of Africa, populations adapted as a result of environmental conditions. Striking new evidence indicates that some human populations carry genes from past encounters with other hominids (Neanderthals and Denisovans), as well as genetic adaptations to local hazards such as malaria. Wills argues that the most effective approaches to conserving green equilibria come out of evolutionary insights, and from close involvement of the local communities who have lived and adapted to them.
Download or read book The Non Equilibrium Green s Function Method for Nanoscale Device Simulation written by Mahdi Pourfath and published by Springer. This book was released on 2014-07-05 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt: For modeling the transport of carriers in nanoscale devices, a Green-function formalism is the most accurate approach. Due to the complexity of the formalism, one should have a deep understanding of the underlying principles and use smart approximations and numerical methods for solving the kinetic equations at a reasonable computational time. In this book the required concepts from quantum and statistical mechanics and numerical methods for calculating Green functions are presented. The Green function is studied in detail for systems both under equilibrium and under nonequilibrium conditions. Because the formalism enables rigorous modeling of different scattering mechanisms in terms of self-energies, but an exact evaluation of self-energies for realistic systems is not possible, their approximation and inclusion in the quantum kinetic equations of the Green functions are elaborated. All the elements of the kinetic equations, which are the device Hamiltonian, contact self-energies and scattering self-energies, are examined and efficient methods for their evaluation are explained. Finally, the application of these methods to study novel electronic devices such as nanotubes, graphene, Si-nanowires and low-dimensional thermoelectric devices and photodetectors are discussed.
Download or read book Green Equilibrium written by Christopher Wills and published by OUP Oxford. This book was released on 2013-03-28 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: In Green Equilibrium, Christopher Wills explains the rules by which ecosystems maintain a diversity of interdependent species, in particular the balance of predators and prey. Wills is both an eminent academic and a hugely experienced field-biologist. In presenting the concept of 'green equilibrium', he draws on a fascinating range of examples, including coral reefs off the densely populated Philippines, the isolated and densely forested valleys of Papua New Guinea, the changing Himalayan kingdom of Bhutan, and a Californian ranch being allowed to return to a wild state. In each case he assesses the impact of modern changes and attempts at conservation on these delicately balanced ecosystems. Wills shows how human populations, too, are an integral part of the picture. We now know from genetic evidence that over the course of history, as humans spread out of Africa, populations adapted as a result of environmental conditions. Striking new evidence indicates that some human populations carry genes from past encounters with other hominids (Neanderthals and Denisovans), as well as genetic adaptations to local hazards such as malaria. Wills argues that the most effective approaches to conserving green equilibria come out of evolutionary insights, and from close involvement of the local communities who have lived and adapted to them.
Download or read book Proceedings of the Conference Progress in Nonequilibrium Green s Functions Dresden Germany 19 23 August 2002 written by Michael Bonitz and published by World Scientific. This book was released on 2003 with total page 556 pages. Available in PDF, EPUB and Kindle. Book excerpt: Equilibrium and nonequilibrium properties of correlated many-body systems are of growing interest in many areas of physics, including condensed matter, dense plasmas, nuclear matter and particles. The most powerful and general method which is equally applied to all these areas is given by quantum field theory. This book provides an overview of the basic ideas and concepts of the method of nonequilibrium Green''s functions, written by the leading experts and presented in a way accessible to non-specialists and graduate students. It is complemented by invited review papers on modern applications of the method to a variety of topics, such as optics and quantum transport in semiconductors; superconductivity; strong field effects, QCD, and state-of-the-art computational concepts OCo from Green''s functions to quantum Monte Carlo and time-dependent density functional theory.The proceedings have been selected for coverage in: OCo Index to Scientific & Technical Proceedings (ISTP CDROM version / ISI Proceedings)"
Download or read book Proceedings of the Koninklijke Nederlandse Akademie Van Wetenschappen written by Koninklijke Nederlandse Akademie van Wetenschappen. Afdeling Natuurkunde and published by . This book was released on 1905 with total page 564 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Analogue and Numerical Modelling of Sedimentary Systems written by Poppe de Boer and published by John Wiley & Sons. This book was released on 2009-01-26 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt: Understanding basin-fill evolution and the origin of stratal architectures has traditionally been based on studies of outcrops, well and seismic data, studies of and inferences on qualitative geological processes, and to a lesser extent based on quantitative observations of modern and ancient sedimentary environments. Insight gained on the basis of these studies can increasingly be tested and extended through the application of numerical and analogue forward models. Present-day stratigraphic forward modelling follows two principle lines: 1) the deterministic process-based approach, ideally with resolution of the fundamental equations of fluid and sediment motion at all scales, and 2) the stochastic approach. The process-based approach leads to improved understanding of the dynamics (physics) of the system, increasing our predictive power of how systems evolve under various forcing conditions unless the system is highly non-linear and hence difficult or perhaps even impossible to predict. The stochastic approach is more direct, relatively simple, and useful for study of more complicated or less-well understood systems. Process-based models, more than stochastic ones, are directly limited by the diversity of temporal and spatial scales and the very incomplete knowledge of how processes operate and interact on the various scales. The papers included in this book demonstrate how cross-fertilization between traditional field studies and analogue and numerical forward modelling expands our understanding of Earth-surface systems.
Download or read book Colour Perception written by Rainer Mausfeld and published by Oxford University Press. This book was released on 2003-11-06 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Colour has long been a source of fascination to both scientists and philosophers. In one sense, colours are in the mind of the beholder, in another sense they belong to the external world. Colours appear to lie on the boundary where we have divided the world into 'objective' and 'subjective' events. They represent, more than any other attribute of our visual experience, a place where both physical and mental properties are interwoven in an intimate and enigmatic way. The last few decades have brought fascinating changes in the way that we think about 'colour' and the role 'colour' plays in our perceptual architecture. In Colour Perception: Mind and the physical world, leading scholars from cognitive psychology, philosophy, neurophysiology, and computational vision provide an overview of the contemporary developments in our understanding of colours and of the relationship between the 'mental' and the 'physical'. With each chapter followed by critical commentaries, the volume presents a lively and accessible picture of the intellectual traditions which have shaped research into colour perception. Written in a non-technical style and accessible to an interdisciplinary audience, the book will provide an invaluable resource for researchers in colour perception and the cognitive sciences.
Download or read book Journal of the Optical Society of America and Review of Scientific Instruments written by and published by . This book was released on 1923 with total page 690 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Chemical Abstracts written by and published by . This book was released on 1907 with total page 1112 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Green s Encyclopedia and Dictionary of Medicine and Surgery written by and published by . This book was released on 1906 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Journal of the Chemical Society written by Chemical Society (Great Britain) and published by . This book was released on 1905 with total page 1234 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Journal Chemical Society London written by Chemical Society (Great Britain) and published by . This book was released on 1905 with total page 1222 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Vegetation Water Humans and the Climate written by P. Kabat and published by Springer Science & Business Media. This book was released on 2004 with total page 598 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents a state-of-the-art scientific overview of the influence of terrestrial vegetation and soils within the Earth system. It deals especially with interactions between the terrestrial biosphere and the atmosphere via the hydrological cycle and their interlinkage with anthropogenic activities. Measurements gathered in integrated field experiments in the Sahel, the Amazon, North America and South-east Asia confirm the importance of these interactions, but a substantial data consolidation effort still needs to be undertaken. Observations are complemented by modelling studies, including regional models that simulate flows and transport in river catchments, coupled land-cover and regional climate systems, and Earth-system and global circulation models. Water, nutrient and sediment fluxes in river basins are also discussed and are shown to be highly impacted and regulated by humans through land use, pollution and river engineering. Finally, the book discusses environmental vulnerability and methodologies for assessing the risks associated with regional and global climatic and environmental variability and change.The editors emphasise that the results reported in this book are based on the research work of many individual scientists and teams around the world associated with the objectives of the IGBP-BAHC and WCRP-GEWEX international research programmes.
Download or read book Gas World written by and published by . This book was released on 1905 with total page 1438 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Journal of the American Veterinary Medical Association written by American Veterinary Medical Association and published by . This book was released on 1927 with total page 998 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vols. for 1915-49 and 1956- include the Proceedings of the annual meeting of the association.
Download or read book Proceedings Annual Meeting of the United States Livestock Sanitary Association written by United States Livestock Sanitary Association and published by . This book was released on 1922 with total page 1358 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The American Gas Light Journal written by and published by . This book was released on 1905 with total page 1054 pages. Available in PDF, EPUB and Kindle. Book excerpt:
