A Mechanics-based Virtual Model of NEES-UCSD Shake Table

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Publisher :
ISBN 13 :
Total Pages : 475 pages
Book Rating : 4.:/5 (272 download)

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Book Synopsis A Mechanics-based Virtual Model of NEES-UCSD Shake Table by : Ozgur Ozcelik

Download or read book A Mechanics-based Virtual Model of NEES-UCSD Shake Table written by Ozgur Ozcelik and published by . This book was released on 2008 with total page 475 pages. Available in PDF, EPUB and Kindle. Book excerpt: Large servo-hydraulic shaking table systems are essential tools in experimental earthquake engineering. They provide effective ways to subject structural components, substructures, or entire structural systems to dynamic excitations similar to those induced by real earthquakes. A typical shake table system includes mechanical, hydraulic, and electronic components. The main objective of this study is to develop a comprehensive mechanics-based virtual model for the large NEES-UCSD shake table under bare and loaded table conditions. The shake table model developed in this study includes a virtual replica of the actual controller, four servovalve models, two single-ended actuators, two effective accumulators, a two-dimensional mechanical subsystem model, and linear/nonlinear specimens modelled using the finite element analysis framework OpenSees. OpenSees is integrated to the rest of the simulation model in Matlab-Simulink® using a client-server technique developed within this work. Test-simulation correlation studies show that the virtual system model developed is capable of reproducing the nonlinear dynamic response behaviour of the NEES-UCSD shake table. An extensive set of shake table tests using harmonic and earthquake acceleration records as reference/commanded signals were performed on the NEES-UCSD table to assess its signal reproduction fidelity after tuning the table controller and using an iterative time-history matching technique. These tests were designed to quantify the effects of the amplitude of the signal used for tuning the table on the signal reproduction fidelity. It was found that the level of fidelity in signal reproduction achieved for a specific amplitude of the commanded signal under the corresponding optimum tuning of the table cannot be maintained when reproducing the same signal at different amplitudes. This is a clear indication that shake tables are highly nonlinear systems and the current state-of-the-art controller and tuning techniques fall short of compensating accurately for these inherent system nonlinearities. The mechanics-based virtual system model developed is extremely useful for: (i) understanding the underlying coupled nonlinear dynamics of a large shake table system; (ii) investigating the most significant sources of signal distortion; (iii) offline tuning of the actual table either by using only the virtual replica of the existing controller or by combining it with simulation-based iterative time history matching techniques; (iv) investigating shake table - linear/nonlinear specimen interaction problem; and (v) future more advanced control algorithm developments.

Dynamics of Civil Structures, Volume 4

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Publisher : Springer Science & Business Media
ISBN 13 : 1441998314
Total Pages : 278 pages
Book Rating : 4.4/5 (419 download)

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Book Synopsis Dynamics of Civil Structures, Volume 4 by : Tom Proulx

Download or read book Dynamics of Civil Structures, Volume 4 written by Tom Proulx and published by Springer Science & Business Media. This book was released on 2011-05-10 with total page 278 pages. Available in PDF, EPUB and Kindle. Book excerpt: This the fourth volume of five from the 28th IMAC on Structural Dynamics and Renewable Energy, 2010, brings together 29 chapters on the Dynamics of Civil Structures. It presents early findings from experimental and computational investigations of Civil Structures, including studies such as Characterization of a Strongly Nonlinear Laboratory Benchmark System, A Non-destructive Technique for the Health Monitoring of Tie-rods in Ancient Buildings, Estimating Effective Prestress Force on Grouted Tendon by Impact Responses, Experimental Investigation of Dynamic Load Estimation Using Small-scale Testing, and Prediction of Prestress Force on Grouted Tendon by Experimental Modal Analysis.

Physical Modelling in Geotechnics, Two Volume Set

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Publisher : CRC Press
ISBN 13 : 1466557427
Total Pages : 1522 pages
Book Rating : 4.4/5 (665 download)

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Book Synopsis Physical Modelling in Geotechnics, Two Volume Set by : Sarah Springman

Download or read book Physical Modelling in Geotechnics, Two Volume Set written by Sarah Springman and published by CRC Press. This book was released on 2010-06-17 with total page 1522 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book results from the 7th ICPMG meeting in Zurich 2010 and covers a broad range of aspects of physical modelling in geotechnics, linking across to other modelling techniques to consider the entire spectrum required in providing innovative geotechnical engineering solutions.Topics presented at the conference:Soil - Structure - Interaction;

Safety, Reliability, Risk and Life-Cycle Performance of Structures and Infrastructures

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Publisher : CRC Press
ISBN 13 : 1315884887
Total Pages : 1112 pages
Book Rating : 4.3/5 (158 download)

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Book Synopsis Safety, Reliability, Risk and Life-Cycle Performance of Structures and Infrastructures by : George Deodatis

Download or read book Safety, Reliability, Risk and Life-Cycle Performance of Structures and Infrastructures written by George Deodatis and published by CRC Press. This book was released on 2014-02-10 with total page 1112 pages. Available in PDF, EPUB and Kindle. Book excerpt: Safety, Reliability, Risk and Life-Cycle Performance of Structures and Infrastructures contains the plenary lectures and papers presented at the 11th International Conference on STRUCTURAL SAFETY AND RELIABILITY (ICOSSAR2013, New York, NY, USA, 16-20 June 2013), and covers major aspects of safety, reliability, risk and life-cycle performance of str

Hydro-Environmental Analysis

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Publisher : CRC Press
ISBN 13 : 1138000868
Total Pages : 5742 pages
Book Rating : 4.1/5 (38 download)

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Book Synopsis Hydro-Environmental Analysis by : James L. Martin

Download or read book Hydro-Environmental Analysis written by James L. Martin and published by CRC Press. This book was released on 2013-12-04 with total page 5742 pages. Available in PDF, EPUB and Kindle. Book excerpt: Focusing on fundamental principles, Hydro-Environmental Analysis: Freshwater Environments presents in-depth information about freshwater environments and how they are influenced by regulation. It provides a holistic approach, exploring the factors that impact water quality and quantity, and the regulations, policy and management methods that are necessary to maintain this vital resource. It offers a historical viewpoint as well as an overview and foundation of the physical, chemical, and biological characteristics affecting the management of freshwater environments. The book concentrates on broad and general concepts, providing an interdisciplinary foundation. The author covers the methods of measurement and classification; chemical, physical, and biological characteristics; indicators of ecological health; and management and restoration. He also considers common indicators of environmental health; characteristics and operations of regulatory control structures; applicable laws and regulations; and restoration methods. The text delves into rivers and streams in the first half and lakes and reservoirs in the second half. Each section centers on the characteristics of those systems and methods of classification, and then moves on to discuss the physical, chemical, and biological characteristics of each. In the section on lakes and reservoirs, it examines the characteristics and operations of regulatory structures, and presents the methods commonly used to assess the environmental health or integrity of these water bodies. It also introduces considerations for restoration, and presents two unique aquatic environments: wetlands and reservoir tailwaters. Written from an engineering perspective, the book is an ideal introduction to the aquatic and limnological sciences for students of environmental science, as well as students of environmental engineering. It also serves as a reference for engineers and scientists involved in the management, regulation, or restoration of freshwater environments.

Topics in Nonlinear Dynamics, Volume 1

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Publisher : Springer Science & Business Media
ISBN 13 : 1461465702
Total Pages : 336 pages
Book Rating : 4.4/5 (614 download)

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Book Synopsis Topics in Nonlinear Dynamics, Volume 1 by : Gaetan Kerschen

Download or read book Topics in Nonlinear Dynamics, Volume 1 written by Gaetan Kerschen and published by Springer Science & Business Media. This book was released on 2013-05-24 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt: Topics in Nonlinear Dynamics, Volume 1: Proceedings of the 31st IMAC, A Conference and Exposition on Structural Dynamics, 2013, the first volume of seven from the Conference, brings together contributions to this important area of research and engineering. The collection presents early findings and case studies on fundamental and applied aspects of Structural Dynamics, including papers on: Nonlinear Oscillations Nonlinearities ... In Practice Nonlinear System Identification: Methods Nonlinear System Identification: Friction & Contact Nonlinear Modal Analysis Nonlinear Modeling & Simulation Nonlinear Vibration Absorbers Constructive Utilization of Nonlinearity

Innovative Methods and Materials in Structural Health Monitoring of Civil Infrastructures

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Publisher : MDPI
ISBN 13 : 303650754X
Total Pages : 288 pages
Book Rating : 4.0/5 (365 download)

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Book Synopsis Innovative Methods and Materials in Structural Health Monitoring of Civil Infrastructures by : Raffaele Zinno

Download or read book Innovative Methods and Materials in Structural Health Monitoring of Civil Infrastructures written by Raffaele Zinno and published by MDPI. This book was released on 2021-09-02 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the past, when elements in structures were composed of perishable materials, such as wood, the maintenance of houses, bridges, etc., was considered of vital importance for their safe use and to preserve their efficiency. With the advent of materials such as reinforced concrete and steel, given their relatively long useful life, periodic and constant maintenance has often been considered a secondary concern. When it was realized that even for structures fabricated with these materials that the useful life has an end and that it was being approached, planning maintenance became an important and non-negligible aspect. Thus, the concept of structural health monitoring (SHM) was introduced, designed, and implemented as a multidisciplinary method. Computational mechanics, static and dynamic analysis of structures, electronics, sensors, and, recently, the Internet of Things (IoT) and artificial intelligence (AI) are required, but it is also important to consider new materials, especially those with intrinsic self-diagnosis characteristics, and to use measurement and survey methods typical of modern geomatics, such as satellite surveys and highly sophisticated laser tools.

Structures Congress 2013

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Publisher :
ISBN 13 : 9780784412848
Total Pages : pages
Book Rating : 4.4/5 (128 download)

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Book Synopsis Structures Congress 2013 by : Brian J. Leshko

Download or read book Structures Congress 2013 written by Brian J. Leshko and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Contains 267 papers on subjects that are advancing structural engineering in the areas of bridges, buildings, and non-building structures.

Rhythms of the Brain

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Publisher : Oxford University Press
ISBN 13 : 0199828237
Total Pages : 465 pages
Book Rating : 4.1/5 (998 download)

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Book Synopsis Rhythms of the Brain by : G. Buzsáki

Download or read book Rhythms of the Brain written by G. Buzsáki and published by Oxford University Press. This book was released on 2011 with total page 465 pages. Available in PDF, EPUB and Kindle. Book excerpt: Studies of mechanisms in the brain that allow complicated things to happen in a coordinated fashion have produced some of the most spectacular discoveries in neuroscience. This book provides eloquent support for the idea that spontaneous neuron activity, far from being mere noise, is actually the source of our cognitive abilities. It takes a fresh look at the coevolution of structure and function in the mammalian brain, illustrating how self-emerged oscillatory timing is the brain's fundamental organizer of neuronal information. The small-world-like connectivity of the cerebral cortex allows for global computation on multiple spatial and temporal scales. The perpetual interactions among the multiple network oscillators keep cortical systems in a highly sensitive "metastable" state and provide energy-efficient synchronizing mechanisms via weak links. In a sequence of "cycles," György Buzsáki guides the reader from the physics of oscillations through neuronal assembly organization to complex cognitive processing and memory storage. His clear, fluid writing-accessible to any reader with some scientific knowledge-is supplemented by extensive footnotes and references that make it just as gratifying and instructive a read for the specialist. The coherent view of a single author who has been at the forefront of research in this exciting field, this volume is essential reading for anyone interested in our rapidly evolving understanding of the brain.

Statistical Mechanics

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Publisher : OUP Oxford
ISBN 13 : 0191566217
Total Pages : 374 pages
Book Rating : 4.1/5 (915 download)

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Book Synopsis Statistical Mechanics by : James Sethna

Download or read book Statistical Mechanics written by James Sethna and published by OUP Oxford. This book was released on 2006-04-07 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt: In each generation, scientists must redefine their fields: abstracting, simplifying and distilling the previous standard topics to make room for new advances and methods. Sethna's book takes this step for statistical mechanics - a field rooted in physics and chemistry whose ideas and methods are now central to information theory, complexity, and modern biology. Aimed at advanced undergraduates and early graduate students in all of these fields, Sethna limits his main presentation to the topics that future mathematicians and biologists, as well as physicists and chemists, will find fascinating and central to their work. The amazing breadth of the field is reflected in the author's large supply of carefully crafted exercises, each an introduction to a whole field of study: everything from chaos through information theory to life at the end of the universe.

Personalized Machine Learning

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Publisher : Cambridge University Press
ISBN 13 : 1009008579
Total Pages : 338 pages
Book Rating : 4.0/5 (9 download)

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Book Synopsis Personalized Machine Learning by : Julian McAuley

Download or read book Personalized Machine Learning written by Julian McAuley and published by Cambridge University Press. This book was released on 2022-02-03 with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt: Every day we interact with machine learning systems offering individualized predictions for our entertainment, social connections, purchases, or health. These involve several modalities of data, from sequences of clicks to text, images, and social interactions. This book introduces common principles and methods that underpin the design of personalized predictive models for a variety of settings and modalities. The book begins by revising 'traditional' machine learning models, focusing on adapting them to settings involving user data, then presents techniques based on advanced principles such as matrix factorization, deep learning, and generative modeling, and concludes with a detailed study of the consequences and risks of deploying personalized predictive systems. A series of case studies in domains ranging from e-commerce to health plus hands-on projects and code examples will give readers understanding and experience with large-scale real-world datasets and the ability to design models and systems for a wide range of applications.

Preference, Belief, and Similarity

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Publisher : MIT Press
ISBN 13 : 9780262700931
Total Pages : 1046 pages
Book Rating : 4.7/5 (9 download)

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Book Synopsis Preference, Belief, and Similarity by : Amos Tversky

Download or read book Preference, Belief, and Similarity written by Amos Tversky and published by MIT Press. This book was released on 2003-11-21 with total page 1046 pages. Available in PDF, EPUB and Kindle. Book excerpt: Amos Tversky (1937–1996), a towering figure in cognitive and mathematical psychology, devoted his professional life to the study of similarity, judgment, and decision making. He had a unique ability to master the technicalities of normative ideals and then to intuit and demonstrate experimentally their systematic violation due to the vagaries and consequences of human information processing. He created new areas of study and helped transform disciplines as varied as economics, law, medicine, political science, philosophy, and statistics. This book collects forty of Tversky's articles, selected by him in collaboration with the editor during the last months of Tversky's life. It is divided into three sections: Similarity, Judgment, and Preferences. The Preferences section is subdivided into Probabilistic Models of Choice, Choice under Risk and Uncertainty, and Contingent Preferences. Included are several articles written with his frequent collaborator, Nobel Prize-winning economist Daniel Kahneman.

The Robotics Primer

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Publisher : MIT Press
ISBN 13 : 026263354X
Total Pages : 325 pages
Book Rating : 4.2/5 (626 download)

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Book Synopsis The Robotics Primer by : Maja J. Mataric

Download or read book The Robotics Primer written by Maja J. Mataric and published by MIT Press. This book was released on 2007-08-17 with total page 325 pages. Available in PDF, EPUB and Kindle. Book excerpt: A broadly accessible introduction to robotics that spans the most basic concepts and the most novel applications; for students, teachers, and hobbyists. The Robotics Primer offers a broadly accessible introduction to robotics for students at pre-university and university levels, robot hobbyists, and anyone interested in this burgeoning field. The text takes the reader from the most basic concepts (including perception and movement) to the most novel and sophisticated applications and topics (humanoids, shape-shifting robots, space robotics), with an emphasis on what it takes to create autonomous intelligent robot behavior. The core concepts of robotics are carried through from fundamental definitions to more complex explanations, all presented in an engaging, conversational style that will appeal to readers of different backgrounds. The Robotics Primer covers such topics as the definition of robotics, the history of robotics (“Where do Robots Come From?”), robot components, locomotion, manipulation, sensors, control, control architectures, representation, behavior (“Making Your Robot Behave”), navigation, group robotics, learning, and the future of robotics (and its ethical implications). To encourage further engagement, experimentation, and course and lesson design, The Robotics Primer is accompanied by a free robot programming exercise workbook that implements many of the ideas on the book on iRobot platforms. The Robotics Primer is unique as a principled, pedagogical treatment of the topic that is accessible to a broad audience; the only prerequisites are curiosity and attention. It can be used effectively in an educational setting or more informally for self-instruction. The Robotics Primer is a springboard for readers of all backgrounds—including students taking robotics as an elective outside the major, graduate students preparing to specialize in robotics, and K-12 teachers who bring robotics into their classrooms.

Recent Advances and Applications of Hybrid Simulation

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Publisher : Frontiers Media SA
ISBN 13 : 2889663809
Total Pages : 213 pages
Book Rating : 4.8/5 (896 download)

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Book Synopsis Recent Advances and Applications of Hybrid Simulation by : Wei Song

Download or read book Recent Advances and Applications of Hybrid Simulation written by Wei Song and published by Frontiers Media SA. This book was released on 2021-01-13 with total page 213 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Subspace Identification for Linear Systems

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Publisher : Springer Science & Business Media
ISBN 13 : 1461304652
Total Pages : 263 pages
Book Rating : 4.4/5 (613 download)

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Book Synopsis Subspace Identification for Linear Systems by : Peter van Overschee

Download or read book Subspace Identification for Linear Systems written by Peter van Overschee and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 263 pages. Available in PDF, EPUB and Kindle. Book excerpt: Subspace Identification for Linear Systems focuses on the theory, implementation and applications of subspace identification algorithms for linear time-invariant finite- dimensional dynamical systems. These algorithms allow for a fast, straightforward and accurate determination of linear multivariable models from measured input-output data. The theory of subspace identification algorithms is presented in detail. Several chapters are devoted to deterministic, stochastic and combined deterministic-stochastic subspace identification algorithms. For each case, the geometric properties are stated in a main 'subspace' Theorem. Relations to existing algorithms and literature are explored, as are the interconnections between different subspace algorithms. The subspace identification theory is linked to the theory of frequency weighted model reduction, which leads to new interpretations and insights. The implementation of subspace identification algorithms is discussed in terms of the robust and computationally efficient RQ and singular value decompositions, which are well-established algorithms from numerical linear algebra. The algorithms are implemented in combination with a whole set of classical identification algorithms, processing and validation tools in Xmath's ISID, a commercially available graphical user interface toolbox. The basic subspace algorithms in the book are also implemented in a set of Matlab files accompanying the book. An application of ISID to an industrial glass tube manufacturing process is presented in detail, illustrating the power and user-friendliness of the subspace identification algorithms and of their implementation in ISID. The identified model allows for an optimal control of the process, leading to a significant enhancement of the production quality. The applicability of subspace identification algorithms in industry is further illustrated with the application of the Matlab files to ten practical problems. Since all necessary data and Matlab files are included, the reader can easily step through these applications, and thus get more insight in the algorithms. Subspace Identification for Linear Systems is an important reference for all researchers in system theory, control theory, signal processing, automization, mechatronics, chemical, electrical, mechanical and aeronautical engineering.

Learning by Expanding

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Publisher : Cambridge University Press
ISBN 13 : 1107074428
Total Pages : 339 pages
Book Rating : 4.1/5 (7 download)

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Book Synopsis Learning by Expanding by : Yrjö Engeström

Download or read book Learning by Expanding written by Yrjö Engeström and published by Cambridge University Press. This book was released on 2015 with total page 339 pages. Available in PDF, EPUB and Kindle. Book excerpt: The second edition of this seminal text illustrates the development and implementation of Yrjö Engeström's expansive learning activity theory.

State of the Art and Practice in the Assessment of Earthquake-Induced Soil Liquefaction and Its Consequences

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Publisher :
ISBN 13 : 9780309440271
Total Pages : 350 pages
Book Rating : 4.4/5 (42 download)

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Book Synopsis State of the Art and Practice in the Assessment of Earthquake-Induced Soil Liquefaction and Its Consequences by : National Academies of Sciences, Engineering, and Medicine

Download or read book State of the Art and Practice in the Assessment of Earthquake-Induced Soil Liquefaction and Its Consequences written by National Academies of Sciences, Engineering, and Medicine and published by . This book was released on 2019-01-30 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt: Earthquake-induced soil liquefaction (liquefaction) is a leading cause of earthquake damage worldwide. Liquefaction is often described in the literature as the phenomena of seismic generation of excess porewater pressures and consequent softening of granular soils. Many regions in the United States have been witness to liquefaction and its consequences, not just those in the west that people associate with earthquake hazards. Past damage and destruction caused by liquefaction underline the importance of accurate assessments of where liquefaction is likely and of what the consequences of liquefaction may be. Such assessments are needed to protect life and safety and to mitigate economic, environmental, and societal impacts of liquefaction in a cost-effective manner. Assessment methods exist, but methods to assess the potential for liquefaction triggering are more mature than are those to predict liquefaction consequences, and the earthquake engineering community wrestles with the differences among the various assessment methods for both liquefaction triggering and consequences. State of the Art and Practice in the Assessment of Earthquake-Induced Soil Liquefaction and Its Consequences evaluates these various methods, focusing on those developed within the past 20 years, and recommends strategies to minimize uncertainties in the short term and to develop improved methods to assess liquefaction and its consequences in the long term. This report represents a first attempt within the geotechnical earthquake engineering community to consider, in such a manner, the various methods to assess liquefaction consequences.