Tag: Stability

Free Download David M. Olson, Gabriella Ilonszki, "Post-Communist Parliaments: Change and Stability in the Second Decade"
English | 2011 | ISBN: 0415560837, 1032929642 | EPUB | pages: 160 | 0.8 mb
At the end of the "founding" or initial decade, the new parliaments of post-Communist Europe had developed two distinct types: democratic and presidentially-dominated. Whilst in the early years, they had been characterised as "parliaments in adolescence," they have – through the second decade – continued to improvise but also elaborate their working relationships with both their chief executives and electorates.

Free Download Onshore Wind Farms: Dynamic Stability and Applications in Hydrogen Production by Kenneth Okedu
English | 2022 | ISBN: 0735422966 | 240 pages | PDF | 16 Mb
Onshore Wind Farms: Dynamic Stability and Applications in Hydrogen Production offers an up-to-date discussion of new technologies and methods for building wind farms and upgrading existing wind turbines. The effective operation of grid-connected wind farms is quite a challenge for grid operators, largely due to the transient nature of wind energy. This book covers improvements in dynamic performance of a grid in combination with other sources including nuclear power, hydropower, and thermal turbines. It investigates the effects of devices and control strategies that potentially improve wind energy capture and stabilize existing fixed-speed wind turbines in grid-connected wind farms.

Free Download Recent Stability Issues for Linear Dynamical Systems
English | 2024 | ISBN: 3031713257 | 187 Pages | PDF EPUB (True) | 15 MB
This book concerns matrix nearness problems in the framework of spectral optimization. It addresses some current research directions in spectral-based stability studies for differential equations, with material on ordinary differential equations (ODEs), differential algebraic equations and dynamical systems. Here, ‘stability’ is interpreted in a broad sense which covers the need to develop stable and reliable algorithms preserving some qualitative properties of the computed solutions, methodologies which are helpful to assess the onset of potential instabilities or loss of robustness, and tools to determine the asymptotic properties of the solution or its discretization.

Free Download Suresh Chandra Parida, "Thermal and Thermodynamic Stability of Nanomaterials "
English | ISBN: 0878492577 | 2010 | 152 pages | PDF | 24 MB
Volume is indexed by Thomson Reuters BCI (WoS).The study of nanomaterials is an active area of 21st-century research in physics, chemistry and materials engineering as well as biomedical engineering. Nanomaterials which are defined as substances that are in the form of spherical dot, rod, thin plate or voids of any irregular shape, but smaller than 100nm, find wide application in materials science and technology due to their very distinctive properties as compared with their bulk counterpart.

Free Download Enhanced Power Grid Stability Using Doubly-Fed Induction Generators by Kenneth Okedu
English | 2020 | ISBN: 0735422265 | 282 pages | PDF | 12 Mb
Enhanced Power Grid Stability Using Doubly-Fed Induction Generators addresses the latest schemes, modeling, and control strategies for improving variable speed wind turbines. Throughout this book, simulations are carried out using modern software packages to model different types of symmetrical and asymmetrical faults for transient stability analysis and modeling techniques for wind turbine power systems.

Free Download Stability Loss and Buckling Delamination: Three-Dimensional Linearized Approach for Elastic and Viscoelastic Composites By Surkay Akbarov (auth.)
2013 | 450 Pages | ISBN: 3642302890 | PDF | 8 MB
This book investigates stability loss problems of the viscoelastic composite materials and structural members within the framework of the Three-Dimensional Linearized Theory of Stability (TDLTS). The stability loss problems are considered the development of the initial infinitesimal imperfection in the structure of the material or of the structural members. This development is studied within the framework of the Three-Dimensional Geometrical Non-Linear Theory of the Deformable Solid Body Mechanics. The solution to the corresponding boundary-value problems is presented in the series form in the small parameter which characterizes the degree of the initial imperfection. In this way, the nonlinear problems for the domains bounded by noncanonical surfaces are reduced for the same nonlinear problem for the corresponding domains bounded by canonical surfaces and the series subsequent linearized problems. It is proven that the equations and relations of these linearized problems coincide with the corresponding ones of the well-known TDLTS. Under concrete investigations as stability loss criterion the case is taken for the initial infinitesimal imperfection that starts to increase indefinitely. Moreover, it is proven that the critical parameters can be determined by the use of only the zeroth and first approximations.

Free Download Physical and Biological Bases of Life Stability: Man, Biota, Environment By Professor Dr. Victor G. Gorshkov (auth.)
1995 | 340 Pages | ISBN: 3642850030 | PDF | 23 MB
It is well known that the biochemical processes of life on Earth are maintained by the external solar radiation and can be reduced to the synthesis and decomposition of organic matter. Man has added the synthesis and decomposition of various in dustrial products to these natural processes. On one hand, biological synthesis may only be conducted within the rather narrow margins of parameters of the environ ment, including temperature, humidity, concentrations of the inorganic substances used by life (such as carbon dioxide, oxygen, etc.) On the other hand, the physical and chemical composition of the environment suffers significant changes during those processes of synthesis and decomposition. The maximum possible rate of such change due to the activity of living beings can exceed the average geophysical rates of change of the environment due to activity ofterrestrial depths and cosmic processes by a factor often thousand. In the absence of a rigid correlation between the biological synthesis and decomposition, the environment would be greatly disturbed within a decade and driven into a state unfit for life. A lifeless Earth, however would suffer similar changes only after about a hundred thousand years. Preservation of the existing state of the environment is only possible with strict equality between the rates of biological synthesis and decomposition, that is, when the biochemical cycles of matter are virtually closed.

Free Download Ajay Patnaik, "Central Asia: Geopolitics, security and stability"
English | 2016 | ISBN: 1138640026 | EPUB | pages: 238 | 0.6 mb
Throughout history, Central Asia has formed an important strategic link between the East and the West and been described as the ‘great pivot’ in the early-twentieth century.

Free Download The Energy Method, Stability, and Nonlinear Convection By Brian Straughan (auth.)
2004 | 450 Pages | ISBN: 1441918248 | PDF | 9 MB
This book describes the energy method, a powerful technique for deriving nonlinear stability estimates in thermal convection contexts. It includes a very readable introduction to the subject (Chapters 2-4), which begins at an elementary level and explains the energy method in great detail, and also covers the current topic of convection in porous media, introducing simple models and then showing how useful stability results can be derived. In addition to the basic explanation, many examples from diverse areas of fluid mechanics are described. The book also mentions new areas where the methods are being used, for example, mathematical biology and finance. Several of the results given are published here for the first time.This volume is a completely revised version of the first edition published in 1992. In addition to an update of material from the first edition, six new chapters have been added, covering topics such as multi-component convection-diffusion, convection flows in a compressible fluid, models of penetrative convection, convection with temperature-dependent viscosity and thermal conductivity, and stability of ocean flows. The final chapter gives details of two very different but highly accurate and efficient methods for numerically solving eigenvalue problems that arise in hydrodynamic stability. The new methods developed during the last eleven years and presented here will be of use to many readers in applied mathematics, engineering, physics, and other mathematical disciplines.

Free Download Protein Stability and Folding: Supplement 1 A Collection of Thermodynamic Data By Professor Dr. Wolfgang Pfeil (auth.)
2001 | 521 Pages | ISBN: 3662128403 | PDF | 36 MB
In 1998, we published the data compilation PROTEIN STABILITY AND FOLDING which covered the data from the early beginnings of thermodynamic studies of protein folding until 1996. Since then, the amount of available thermodynamic data has increased nearly twice. The data constitute very important additions to the information on the protein folding problem, the construction of mutant protein, and the practical application of proteins in various fields. The Supplement covers the period 1997-1999 and is designed to make the vast amount of present data accessible to multidisciplinary research where chemistry, physics, biology, and medicine are involved and also biotechnology, pharmaceutical and food research. At the same time the data could be helpful to identify problems unsolved so far, and to avoid unnecessary duplication of scientific work. The structure of the Supplement is the same as in the previous data compilation. However, some additional data characterizing protein-denaturant interaction and protein unfolding by trifluoroethanol have been added. In that context, some previous data have been reconsidered. The author wishes to thank everyone who provided data, ideas, or even unpublished results. Furthermore, support by the Deutsche Forschungsgemeinschaft (INK 16 BI-I) is gratefully acknowledged. Finally, I would like to thank the staff of Springer Verlag for their efforts and for excellent assistance during the production of the data collections.