Author: Wendy L. Martinez Angel R. Martinez | Size: 5 MB | Format:PDF | Quality:Original preprint | Publisher: CHAPMAN & HALL/CRC A CRC Press Company Boca Raton London New York Washington, D.C. | Year: 2002 | pages: 584 | ISBN: 1-58488-229-8
Computational statistics is a fascinating and relatively new field within statistics. While much of classical statistics relies on parameterized functions and related assumptions, the computational statistics approach is to let the
data tell the story. The advent of computers with their number-crunching capability, as well as their power to show on the screen two- and three dimensional structures, has made computational statistics available for any
data analyst to use. Computational statistics has a lot to offer the researcher faced with a file full of numbers. The methods of computational statistics can provide assistance
ranging from preliminary exploratory data analysis to sophisticated probability density estimation techniques, Monte Carlo methods, and powerful multi-dimensional visualization. All of this power and novel ways of
looking at data are accessible to researchers in their daily data analysis tasks.
One purpose of this book is to facilitate the exploration of these methods and approaches and to provide the tools to make of this, not just a theoretical exploration, but a practical one. The two main goals of this book are:
• To make computational statistics techniques available to a wide
range of users, including engineers and scientists, and
• To promote the use of MATLAB® by statisticians and other data
analysts.
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COMPUTATIONAL MATHEMATICS Models, Methods, and Analysis with MATLAB and MPI
Author: ROBERT E. WHITE | Size: 6.61 MB | Format:PDF | Quality:Original preprint | Publisher: CHAPMAN & HALL/CRC A CRC Press Company Boca Raton London New York Washington, D.C. | Year: 2004 | pages: 986 | ISBN: 1-58488-364-2
Computational science is a blend of applications, computations and mathematics.
It is a mode of scientific investigation that supplements the traditional laboratory and theoretical methods of acquiring knowledge. This is done by formulating mathematical models whose solutions are approximated by computer simulations. By making a sequence of adjustments to the model and subsequent computations one can gain some insights into the application area under consideration. This text attempts to illustrate this process as a method for scientific investigation. Each section of the first six chapters is motivated by a particular application, discrete or continuous model, numerical method,computer implementation and an assessment of what has been done.............
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Most transport analysts would agree that road pricing is a potentially effective instrument for curbing transport and transport-related problems. Likewise,many policy documents, from local authorities, as well as national and international governments, identify road pricing as one of the key cornerstones of contemporary transport policies, and support this by a variety of arguments, ranging from effectiveness and economic efficiency to considerations of fairness and transparency in the financing of infrastructure (the ‘user-pays principle’). But public acceptability often seems to be lagging behind, so that actual implementations, although growing in number, remain scarce. Nevertheless, with the introduction of the London congestion charge in 2003, and the implementation of charging in Stockholm in the Summer of 2007 (see also Chapter 10), one might hypothesize that urban road pricing is entering a new phase in its history, and will soon spread over Europe and other parts of the world.
This book aims to provide a multidisciplinary view on the effectiveness and acceptability of pricing in road transport. After a general introduction to road pricing, four topics will be addressed. First, the authors elaborate on the possible behavioural responses to road pricing. Second, illustrate how model studies may assist in designing optimal road-pricing policies, given different policy objectives. Third, describe the acceptability of different types of road-pricing policies by the general public and firms, and indicate how such policies may affect geographical accessibility. Finally, discuss to what extent road pricing has actually proved to be effective, and indicate the prospects for implementing transport infrastructure pricing in Europe.
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Regional Frequency Analysis: An Approach Based on L-Moments
Author: J. R. M. Hosking and J. R. Wallis | Size: 1.14 MB | Format:DjVu | Quality:Unspecified | Publisher: Cambridge Uiversity Press | Year: 1997 | pages: 238 | ISBN: 0521430453
Extreme environmental events, such as floods, droughts, rainstorms, and high winds, have severe consequences for human society. Regional frequency analysis helps to solve the problem of estimating the frequency of these rare events at one site by using data from several sites. This book is the first complete account of the L-moment approach to regional frequency analysis. Regional Frequency Analysis comprehensively describes the theoretical background to the subject, is rich in practical advice for users, and contains detailed examples that illustrate the approach. This book will be of great value to hydrologists, atmospheric scientists and civil engineers, concerned with environmental extremes.
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“Frame Analysis of Concrete Buildings,”
Vanderbilt, M. D., and Corley, W. G.,
Concrete International: Design and Construction,
V. 5, No. 12, Dec. 1983, pp. 33-43.
This book contains the 7 keynote papers written by the industry experts, international renowned researchers and specialists and 73 technical papers which reflect the state-of-the-practice on the Analysis of Discontinuous Deformation: New development and Applications. These papers were selected after a rigorous review process. It represents the latest advances in numerical and analytical methods related to rock mechanics and engineering. Following the tradition of the series, the main schemes of the papers are on the key block theory and its engineering applications, the discontinuous deformation analysis (DDA) method and the numerical manifold method (NMM). However, other relevant topics, for example, the distinct/discrete element method, the meshless method, the finite element method in rock mechanics and engineering applications are also included. For rock masses where the discontinuities dominate their behaviour in a rock engineering system such as rock slopes and underground rock caverns, the analysis of discontinuous deformation is of critical importance in the stability analysis and engineering design. It is hoped that this book serves as a useful reference for both researchers and engineers on the new developments and applications of the various available modeling techniques and tools in this increasingly important field of rock mechanics and engineering. Topics covered: * Key Block Theory and Engineering Applications * Discontinuous Deformation Analysis (DDA) Method * Numerical Manifold Method (NMM) * Distinct/Discrete Element Method (DEM) * Application of UDEC, 3DEC and PFC codes * Meshless Method and Rock Engineering Applications * Contact Algorithms * Wave Propagation through Rock Joint and Jointed Rock Mass * Deformation Analysis of Heterogeneous Materials * Other Advanced Analytical and Numerical Methods in Rock Engineering * Experimental Techniques and Measurement of Discontinuous Deformation * Case Studies and Other Relevant Topics
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2010 ASME BPVC, Section VIII, Division 1: Rules for Construction of Pressure Vessels, Includes 2011 Addenda
Author: American Society of Mechanical Engineers | Size: 12.1 MB | Format:PDF | Quality:Original preprint | Year: 2011 | pages: 806
This Division of Section VIII provides requirements applicable to the design, fabrication, inspection, testing, and certification of pressure vessels operating at either internal or external pressures exceeding 15 psig. Such pressure vessels may be fired or unfired. Specific requirements apply to several classes of material used in pressure vessel construction, and also to fabrication methods such as welding, forging and brazing. It contains mandatory and non-mandatory appendices detailing supplementary design criteria, nondestructive examination and inspection acceptance standards. Rules pertaining to the use of the U, UM and UV Code symbol stamps are also included.
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2010 ASME BPVC, Section VIII, Division 2: Alternative Rules, Includes 2011 Addenda
Author: American Society of Mechanical Engineers | Size: 10.6 MB | Format:PDF | Quality:Original preprint | Year: 2011 | pages: 778
These rules provide an alternative to the minimum requirements for pressure vessels under Division 1 rules. In comparison the Division 1, Division 2 requirements on materials, design, and nondestructive examination are more rigorous; however, higher design stress intensify values are permitted. Division 2 rules cover only vessels to be installed in a fixed location for a specific service where operation and maintenance control is retained during the useful life of the vessel by the user who prepares or causes to be prepared the design specifications. These rules may also apply to human occupancy pressure vessels typically in the diving industry.
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2010 ASME BPVC, Section VIII, Division 3: Alternative Rules for Construction of High Pressure Vessels
Author: American Society of Mechanical Engineers | Size: 4.8 MB | Format:PDF | Quality:Original preprint | Year: 2011 | pages: 384
This Division of Section VIII provides requirements applicable to the design, fabrication, inspection, testing, and certification of pressure vessels operating at either internal or external pressures generally above 10,000 psi. Such vessels may be fired or unfired. This pressure may be obtained from an external source, a process reaction, by the application of heat from a direct or indirect source, or any combination thereof. Division 3 rules cover vessels intended for a specific service and installed in a fixed location or relocated from work site to work site between pressurizations. The operation and maintenance control is retained during the useful life of the vessel by the user who prepares or causes to be prepared the design specifications. Division 3 does not establish maximum pressure limits for either Section VIII, Divisions 1 or 2, nor minimum pressure limits for this Division. Rules pertaining to the use of the UV3 Code symbol stamps are also included.
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WinRAR is a 32-bit/64-bit Windows version of RAR Archiver, an archiver and archive manager.
RAR files can usually compress content by 8 percent to 15 percent more than ZIP files can.
WinRAR's main features include strong general and multimedia compression, the ability to process non-RAR archive formats,
ZIP compression and decompression, support for long filenames, programmable self-extracting archives (SFX),
repair of damaged archives, authenticity verification, embedded file comments, and encryption.
Unicode is supported in archive filenames, allowing non-English filenames to be handled painlessly.
You can manipulate the parameters of many archives at once and view a volume sequence as a single archive.
WinRAR can convert other archive formats to RAR and search for specified text and files in archives.
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Plaxis 3D- Material datasets for plates: sheet pile wall in bending
Size: 94 KB
This is based on the Engineering Example as described in the PLAXIS 3D 2011 Material models manual.
In PLAXIS 3D plate elements are assumed to be plates with a rectangular cross-section. With some assumptions, the parameters for a material dataset for a sheet pile wall in bending can be calculated.
From the sheet-pile manufacturer, the following properties are known: t (wall thickness), h (total height), A (per m wall width), I1, Esteel and γsteel.
The structure is geometrically orthotropic with significant different stiffnesses in horizontal and vertical direction. It is known that the axial stiffness in vertical direction is larger than the effective stiffness in horizontal direction (E1 > E2). Moreover, the flexural rigidity against bending over the vertical direction, I1, is much larger than the stiffness against bending over the horizontal direction, I2, (I1 >> I2 say I1 ≈ 20 I2 and I1 >> I12 say I1 ≈ 10 I12)++).
Furthermore, it is assumed that the cross section area that is effective against shear deformation over the vertical direction is about 1/3 of the total cross section area, whereas the area that is effective against shear deformation over the horizontal direction is about 1/10 of the total cross section area. Finally, the Poisson's ratio's for sheet pile walls can be assumed zero.
With these assumptions, the situation could be modelled by selecting the model parameters in the following way:
In the attached Microsoft Excel spreadsheet, you can find these equations to determine the sheetpile wall parameters. Due to these assumptions to calculate the bending correctly, the axial stiffness is not correct, resulting in incorrect axial forces. The usage of this spreadsheet is at own risk. The PLAXIS program Disclaimer applies.
++) A factor of 20 is used here to move the bending stiffness over the first direction sufficiently small compared to the bending stiffness over the second direction, whilst the matrix condition is still OK. Note that in reality bending stiffness differences in order of 1000 may exist.
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