Unknown Boundaries

Unknown Boundaries PDF Author: R. A. Foley
Publisher: Cambridge University Press
ISBN: 1139451316
Category : Social Science
Languages : en
Pages : 42

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Book Description
The last twenty years have seen a resurgence of interest in human evolution. A distinction can be made between 'narrow' and 'broad' human evolution and is discussed here using two different approaches: finding where humans 'fit' the expectations of evolutiionary principles; and by applying evolutionary methods to particular human contexts.

Unknown Boundaries

Unknown Boundaries PDF Author: R. A. Foley
Publisher: Cambridge University Press
ISBN: 1139451316
Category : Social Science
Languages : en
Pages : 42

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Book Description
The last twenty years have seen a resurgence of interest in human evolution. A distinction can be made between 'narrow' and 'broad' human evolution and is discussed here using two different approaches: finding where humans 'fit' the expectations of evolutiionary principles; and by applying evolutionary methods to particular human contexts.

Boundary-value Problems with Free Boundaries for Elliptic Systems of Equations

Boundary-value Problems with Free Boundaries for Elliptic Systems of Equations PDF Author: Valentin Nikolaevich Monakhov
Publisher: American Mathematical Soc.
ISBN: 9780821898079
Category : Mathematics
Languages : en
Pages : 540

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Book Description
This book is concerned with certain classes of nonlinear problems for elliptic systems of partial differential equations: boundary-value problems with free boundaries. The first part has to do with the general theory of boundary-value problems for analytic functions and its applications to hydrodynamics. The second presents the theory of quasiconformal mappings, along with the theory of boundary-value problems for elliptic systems of equations and applications of it to problems in the mechanics of continuous media with free boundaries: problems in subsonic gas dynamics, filtration theory, and problems in elastico-plasticity.

Intelligent Information Integration for the Semantic Web

Intelligent Information Integration for the Semantic Web PDF Author: Ubbo Visser
Publisher: Springer
ISBN: 3540286365
Category : Computers
Languages : en
Pages : 163

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Book Description
The Semantic Web o?ers new options for information processes. Dr. Visser is dealing with twocore issuesin this area:the integrationofdata onthe sem- tic level and the problem of spatio-temporalrepresentation and reasoning. He tackles existing research problems within the ?eld of geographic information systems(GIS), thesolutionsofwhichareessentialfor animprovedfunction- ity of applicationsthat makeuse of the Semantic Web (e.g., for heterogeneous digitalmaps).Inaddition,theyareoffundamentalsigni?canceforinformation sciences as such. In an introductory overview of this ?eld of research, he motivates the - cessity for formal metadata for unstructured information in the World Wide Web. Without metadata, an e?cient search on a semantic level will turn out to be impossible, above all if it is not only applied to a terminological level but also to spatial-temporal knowledge. In this context, the task of infor- tionintegrationisdividedinto syntactic,structural,andsemanticintegration, the last class by far the most di?cult, above all with respect to contextual semantic heterogeneities. A current overview of the state of the art in the ?eld of information in- gration follows. Emphasis is put particularly on the representation of spatial and temporal aspects including the corresponding inference mechanisms, and also the special requirements on the Open GIS Consortium.

Inverse Problems in Engineering Mechanics IV

Inverse Problems in Engineering Mechanics IV PDF Author: Mana Tanaka
Publisher: Elsevier
ISBN: 0080535178
Category : Science
Languages : en
Pages : 545

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Book Description
This latest collection of proceedings provides a state of the art review of research on inverse problems in engineering mechanics. Inverse problems can be found in many areas of engineering mechanics, and have many successful applications. They are concerned with estimating the unknown input and/or the characteristics of a system given certain aspects of its output. The mathematical challenges of such problems have to be overcome through the development of new computational schemes, regularization techniques, objective functionals, and experimental procedures. The papers within this represent an excellent reference for all in the field. - Providing a state of the art review of research on inverse problems in engineering mechanics - Contains the latest research ideas and related techniques - A recognized standard reference in the field of inverse problems - Papers from Asia, Europe and America are all well represented

Handbook of Near-Infrared Analysis, Second Edition

Handbook of Near-Infrared Analysis, Second Edition PDF Author: Donald A. Burns
Publisher: CRC Press
ISBN: 9781420002577
Category : Science
Languages : en
Pages : 834

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Book Description
With contributions from over 40 experts in the field, this reference presents comprehensive, single-source coverage of the instrumentation, computerization, calibration, and methods development of NIR spectroscopy. It provides novel applications for accurate time- and cost-effective analyses of pharmaceuticals, polymers, textiles, agricultural products, dairy products, foods, and beverages. Emphasizing trends in sample preparation, the book covers historical development, calibration transfer, biomedical applications, plastics, and counterfeiting; on-line, in-line, and at-line analyses for process control, multilinear regression and principal component analysis, and more.

Coupled Thermo-Hydro-Mechanical-Chemical Processes in Geo-systems

Coupled Thermo-Hydro-Mechanical-Chemical Processes in Geo-systems PDF Author: Ove Stephansson
Publisher: Elsevier
ISBN: 0080530060
Category : Science
Languages : en
Pages : 853

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Book Description
Among the most important and exciting current steps forward in geo-engineering is the development of coupled numerical models. They represent the basic physics of geo-engineering processes which can include the effects of heat, water, mechanics and chemistry. Such models provide an integrating focus for the wide range of geo-engineering disciplines. The articles within this volume were originally presented at the inaugural GeoProc conference held in Stockholm and contain a collection of unusually high quality information not available elsewhere in an edited and coherent form. This collection not only benefits from the latest theoretical developments but also applies them to a number of practical and wide ranging applications. Examples include the environmental issues around radioactive waste disposal deep in rock, and the search for new reserves of oil and gas.

Computational Mechanics '86

Computational Mechanics '86 PDF Author: Genki Yagawa
Publisher: Springer Science & Business Media
ISBN: 443168042X
Category : Science
Languages : en
Pages : 1360

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Book Description
It is often said that these days there are too many conferences on general areas of computational mechanics. mechanics. and numer ical methods. vJhile this may be true. the his tory of scientific conferences is itself quite short. According to Abraham Pais (in "Subtle is the Lord ...• " Oxford University Press. 1982. p.80). the first international scientific conference ever held was the Karlsruhe Congress of Chemists. 3-5 September 1860 in Karlsruhe. Germany. There were 127 chemists in attendance. and the participants came from Austria. Belgium. France. Germany. Great Britain. Italy. Mexico. Poland. Russia. Spain. Sweden. and Switzerland. At the top of the agenda of the points to be discussed at this conference was the question: "Shall a difference be made between the expressions molecule and atom?" Pais goes on to note: "The conference did not at once succeed in bringing chemists closer together ... It is possible that the older men were offended by the impetuous behavior and imposing manner of the younger scientists" (see references cited in Pais' book). It may be observed that history. in general. repeats itself. However. at ICCM-86 in Tokyo. roughly 500 participants from both the West and the East were in attendance; there were only scholarly exchanges; the young tried to learn from the more experienced. and a spirit of international academic cooperation prevailed.

Problems and Methods of Optimal Structural Design

Problems and Methods of Optimal Structural Design PDF Author: Nikolai Vladimirovich Banichuk
Publisher: Springer Science & Business Media
ISBN: 1461336767
Category : Computers
Languages : en
Pages : 326

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Book Description
The author offers a systematic and careful development of many aspects of structural optimization, particularly for beams and plates. Some of the results are new and some have appeared only in specialized Soviet journals, or as pro ceedings of conferences, and are not easily accessible to Western engineers and mathematicians. Some aspects of the theory presented here, such as optimiza tion of anisotropic properties of elastic structural elements, have not been con sidered to any extent by Western research engineers. The author's treatment is "classical", i.e., employing classical analysis. Classical calculus of variations, the complex variables approach, and the Kolosov Muskhelishvili theory are the basic techniques used. He derives many results that are of interest to practical structural engineers, such as optimum designs of structural elements submerged in a flowing fluid (which is of obvious interest in aircraft design, in ship building, in designing turbines, etc.). Optimization with incomplete information concerning the loads (which is the case in a great majority of practical design considerations) is treated thoroughly. For example, one can only estimate the weight of the traffic on a bridge, the wind load, the additional loads if a river floods, or possible earthquake loads.

Monthly Weather Review

Monthly Weather Review PDF Author:
Publisher:
ISBN:
Category : Meteorology
Languages : en
Pages : 1540

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Book Description


The Isogeometric Boundary Element Method

The Isogeometric Boundary Element Method PDF Author: Gernot Beer
Publisher: Springer Nature
ISBN: 3030233391
Category : Science
Languages : en
Pages : 342

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Book Description
This book discusses the introduction of isogeometric technology to the boundary element method (BEM) in order to establish an improved link between simulation and computer aided design (CAD) that does not require mesh generation. In the isogeometric BEM, non-uniform rational B-splines replace the Lagrange polynomials used in conventional BEM. This may seem a trivial exercise, but if implemented rigorously, it has profound implications for the programming, resulting in software that is extremely user friendly and efficient. The BEM is ideally suited for linking with CAD, as both rely on the definition of objects by boundary representation. The book shows how the isogeometric philosophy can be implemented and how its benefits can be maximised with a minimum of user effort. Using several examples, ranging from potential problems to elasticity, it demonstrates that the isogeometric approach results in a drastic reduction in the number of unknowns and an increase in the quality of the results. In some cases even exact solutions without refinement are possible. The book also presents a number of practical applications, demonstrating that the development is not only of academic interest. It then elegantly addresses heterogeneous and non-linear problems using isogeometric concepts, and tests them on several examples, including a severely non-linear problem in viscous flow. The book makes a significant contribution towards a seamless integration of CAD and simulation, which eliminates the need for tedious mesh generation and provides high-quality results with minimum user intervention and computing.