Download or read book Expansion and Fragmentation written by Kees van Kersbergen and published by . This book was released on 1999 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fragmentation of Rings and Shells written by Dennis Grady and published by Springer Science & Business Media. This book was released on 2007-07-13 with total page 375 pages. Available in PDF, EPUB and Kindle. Book excerpt: For a brief period during the latter part of World War II, Nevill F. Mott led a theoretical group at Fort Halstead in the United Kingdom that tackled scientific issues related to pressing war-time concerns. Among later awards and honors, Mott was knighted and a recipient of the Nobel Prize. While at Fort Halstead, he undertook an effort to theoretically describe the statistical fragmentation of munitions subjected to intense explosive loading. Mott`s original internal reports contain seminal theoretical concepts on the physics and statistics of dynamic fracture and fragmentation, which have provided the inspiration for numerous later modeling efforts and engineering formulae. Some of his most forward-looking thoughts on the micromechanical and molecular aspects of fracture are included in these publications. The present book surveys the theoretical analysis put forth by Mott with particular focus on his efforts to characterize the size and distribution of fragments resulting from a dynamic fragmentation event. Copies of the original internal reports of Mott and his co-workers are included. The book also pursues additional theoretical analysis with the intent of delving further into the physical ideas and unfinished analysis implicit in Mott`s original studies. This book will be of interest to all scientists and engineers concerned with the dynamic fracture and fragmentation of solid bodies subject to intense transient loads imparted by explosive detonation and high-velocity impact from both the historical and modern perspective.
Download or read book Heathland fragmentation and the potential for expansion written by N R. Webb and published by . This book was released on 1993 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cylinder Expansion Gurney Constant and Warhead Fragmentation Part 2 Computerized Data Reduction written by and published by . This book was released on 1972 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt: Development of a cylinder expansion test for use in assessing the metal acceleration capability of explosives is discussed. A precisely manufactured metal cylinder is filled with explosive, and its wall expansion during detonation is observed with a streak camera. The photographic record of the cylinder expansion is analyzed by mechanized film reading and high speed computer techniques. The maximum velocity attained by the wall fragments is taken as a measure of the momentum imparted to the metal by the explosive. Both manual and automated methods of data reduction for attainment of test results are given. When standardized, this test procedure will permit the correlation of the evaluations of explosive compounds between laboratories. The computerized reduction of the pictorial data to tabular listings and graphic displays is also discussed.
Download or read book Dynamical Effects in the Coulomb Expansion Following Nuclear Fragmentation written by K. C. Chung and published by . This book was released on 1987 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Habitat Fragmentation and Landscape Change written by David B. Lindenmayer and published by Island Press. This book was released on 2013-02-22 with total page 349 pages. Available in PDF, EPUB and Kindle. Book excerpt: Habitat loss and degradation that comes as a result of human activity is the single biggest threat to biodiversity in the world today. Habitat Fragmentation and Landscape Change is a groundbreaking work that brings together a wealth of information from a wide range of sources to define the ecological problems caused by landscape change and to highlight the relationships among landscape change, habitat fragmentation, and biodiversity conservation. The book: synthesizes a large body of information from the scientific literature considers key theoretical principles for examining and predicting effects examines the range of effects that can arise explores ways of mitigating impacts reviews approaches to studying the problem discusses knowledge gaps and future areas for research and management Habitat Fragmentation and Landscape Change offers a unique mix of theoretical and practical information, outlining general principles and approaches and illustrating those principles with case studies from around the world. It represents a definitive overview and synthesis on the full range of topics that fall under the widely used but often vaguely defined term "habitat fragmentation."
Download or read book Governance Fragmentation and Urban Spatial Expansion written by Silvia Beghelli and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This study assesses the effects of urban governance structure on the spatial expansion of metropolitan areas. A more fragmented governance structure, represented by a high number of administrative units with decision power on land use per inhabitant, is expected to increase the competition between small towns in the suburbs of metropolitan areas to attract households and workers, which, in turn, induces more land uptake. We study empirically the relationship between administrative fragmentation and the spatial size of cities in a sample of 180 metropolitan areas in the contexts of the US and Europe in the period 2000-2012. Results shed light on the structural differences between the two broad regions and suggest that administrative fragmentation impacts positively on land uptake in both the United States and Europe, although to different extents.
Download or read book Insurgent Fragmentation in the Horn of Africa written by Michael Woldemariam and published by Cambridge University Press. This book was released on 2018-02-15 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt: When insurgent organizations factionalize and fragment, it can profoundly shape a civil war: its intensity, outcome, and duration. In this extended treatment of this complex and important phenomenon, Michael Woldemariam examines why rebel organizations fragment through a unique historical analysis of the Horn of Africa's civil wars. Central to his view is that rebel factionalism is conditioned by battlefield developments. While fragmentation is caused by territorial gains and losses, counter-intuitively territorial stalemate tends to promote rebel cohesion and is a critical basis for cooperation in war. As a rare effort to examine these issues in the context of the Horn of Africa region, based upon extensive fieldwork, this book will interest both scholarly and non-scholarly audiences interested in insurgent groups and conflict dynamics.
Download or read book Modelling of Fluid Fragmentation by Molecular Dynamics written by Igor Stepanov and published by LAP Lambert Academic Publishing. This book was released on 2013 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fragmentation is an example of material failure. This is a problem with widespread applications. The fragmentation of liquids is a subset of this field but nevertheless has many applications and yet is scientifically challenging to study. A complete mathematical and physical understanding of fragmentation is currently beyond reach given the complexity involved. The aim of theory is to predict the number of fragments, their size and mass distribution and shape, as well as their velocity and spatial distributions. In the present work, numerous molecular dynamics simulations of fragmentation of expanding Lennard-Jones fluids have been performed. Two types of expansion were considered: that of Holian and Grady, and that of Blink and Hoover. Much larger systems were investigated in comparison with the previous authors (up to 0.54 million particles) and much more initial conditions. The previous authors studied systems with less than 15 000 particles. Statistical and thermal properties of fragments were investigated. The results are compared with simple fragmentation models. This book should be useful for scientists who work in fragmentation phenomena.
Download or read book Generalized Many body Expansion written by Kuan-Yu Liu and published by . This book was released on 2019 with total page 105 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this work, we explore several promising aspects of generalized many-body expansion (GMBE) for computing energies and energy responses of large systems. The GMBE is recognized as one of the fragment-based methods and provides a unified view of those methods in electronic structure theory. The four elements shared by other fragment-based methods include a fragmentation method, a capping method, an embedding method, and the number of layer. We utilize the last two elements as well as the screening to approximate the non-additive many-body interactions. We found that energy-based thresholding affords linear scaling and high accuracy without embedding and multi-layer approximations. For the charge embedding scheme, the variational electrostatic embedded one-body approximation alongside symmetry-adapted perturbation theory proves promising for non-covalent interactions with the newly implemented modified Hirshfeld population analysis. We are able to reduce the cost for calculation the charge response term without compromising accuracy. The two prominent results of the GMBE show that we can apply this fragment-based method to relatively large systems due to its excellent parallel ability. Since the preliminary results of frequency calculations show the robustness of finite difference implementation, we are also looking forward to applying this methodology to energy responses such as spectroscopies.
Download or read book Fragmentation of International Law written by and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fragmentation Toward Accurate Calculations on Complex Molecular Systems written by Mark S. Gordon and published by John Wiley & Sons. This book was released on 2017-10-23 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fragmentation: Toward Accurate Calculations on Complex Molecular Systems introduces the reader to the broad array of fragmentation and embedding methods that are currently available or under development to facilitate accurate calculations on large, complex systems such as proteins, polymers, liquids and nanoparticles. These methods work by subdividing a system into subunits, called fragments or subsystems or domains. Calculations are performed on each fragment and then the results are combined to predict properties for the whole system. Topics covered include: Fragmentation methods Embedding methods Explicitly correlated local electron correlation methods Fragment molecular orbital method Methods for treating large molecules This book is aimed at academic researchers who are interested in computational chemistry, computational biology, computational materials science and related fields, as well as graduate students in these fields.
Download or read book A Fragmentation Model for Cylindrical Warheads written by John Pearson and published by . This book was released on 1990 with total page 49 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report presents a descriptive model for the expansion and fragmentation behavior for the case of a single-point, end-initiated cylindrical warhead. This model divides the overall behavioral process of the warhead case into four distinct zones of behavior which occur between initial case motion and fragment impact. The report describes what is happening in each zone in terms of (1) the physical behavior of the warhead case and (2) the respective velocities of the metal case or fragments. This model is based on the results of numerous experimental studies using high speed photography and fragmentation test arenas. Several examples in the use of the model are presented based on these studies.
Download or read book Fragmented Democracy written by Jamila Michener and published by Cambridge University Press. This book was released on 2018-03-22 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Medicaid is the single largest public health insurer in the United States, covering upwards of 70 million Americans. Crucially, Medicaid is also an intergovernmental program that yokes poverty to federalism: the federal government determines its broad contours, while states have tremendous discretion over how Medicaid is designed and implemented. Where some locales are generous and open handed, others are tight-fisted and punitive. In Fragmented Democracy, Jamila Michener demonstrates the consequences of such disparities for democratic citizenship. Unpacking how federalism transforms Medicaid beneficiaries' interpretations of government and structures their participation in politics, the book examines American democracy from the vantage point(s) of those who are living in or near poverty, (disproportionately) Black or Latino, and reliant on a federated government for vital resources.
Download or read book Recent Advances of the Fragment Molecular Orbital Method written by Yuji Mochizuki and published by Springer Nature. This book was released on 2021-01-04 with total page 606 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers recent advances of the fragment molecular orbital (FMO) method, consisting of 5 parts and a total of 30 chapters written by FMO experts. The FMO method is a promising way to calculate large-scale molecular systems such as proteins in a quantum mechanical framework. The highly efficient parallelism deserves being considered the principal advantage of FMO calculations. Additionally, the FMO method can be employed as an analysis tool by using the inter-fragment (pairwise) interaction energies, among others, and this feature has been utilized well in biophysical and pharmaceutical chemistry. In recent years, the methodological developments of FMO have been remarkable, and both reliability and applicability have been enhanced, in particular, for non-bio problems. The current trend of the parallel computing facility is of the many-core type, and adaptation to modern computer environments has been explored as well. In this book, a historical review of FMO and comparison to other methods are provided in Part I (two chapters) and major FMO programs (GAMESS-US, ABINIT-MP, PAICS and OpenFMO) are described in Part II (four chapters). dedicated to pharmaceutical activities (twelve chapters). A variety of new applications with methodological breakthroughs are introduced in Part IV (six chapters). Finally, computer and information science-oriented topics including massively parallel computation and machine learning are addressed in Part V (six chapters). Many color figures and illustrations are included. Readers can refer to this book in its entirety as a practical textbook of the FMO method or read only the chapters of greatest interest to them.
Download or read book Fragmentation of International Law written by United Nations. International Law Commission and published by . This book was released on 2007 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dynamic Damage and Fragmentation written by David Edward Lambert and published by John Wiley & Sons. This book was released on 2019-01-14 with total page 439 pages. Available in PDF, EPUB and Kindle. Book excerpt: Engineering structures may be subjected to extreme high-rate loading conditions, like those associated with natural disasters (earthquakes, tsunamis, rock falls, etc.) or those of anthropic origin (impacts, fluid–structure interactions, shock wave transmissions, etc.). Characterization and modeling of the mechanical behavior of materials under these environments is important in predicting the response of structures and improving designs. This book gathers contributions by eminent researchers in academia and government research laboratories on the latest advances in the understanding of the dynamic process of damage, cracking and fragmentation. It allows the reader to develop an understanding of the key features of the dynamic mechanical behavior of brittle (e.g. granular and cementitious), heterogeneous (e.g. energetic) and ductile (e.g. metallic) materials.
