springer springer feb 1980 (94 risultati)

Buch. Condizione: Neu. Neuware - From the Subhdsitaratnakosa, Verse No. 1729: vahati na pural) kascit pasclill na ko 'py anuyati mam na ca navapadak~ul)l)o marga!) katham nv aham ekaka!) bhavatu viditam purvavyu.

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -The derived exact sequences.- Finite modules.- Realization of finite modules.- i of finite modules.- Product structure on finite modules.- Classification of derived product structure.- Rational invariants.- Z-torsion-free modules.- -only torsion.- Statement of realization theorem.- Inductive construction of derived sequences.- Inductive recovery of derived sequences.- Homogeneous and elementary modules.- Realization of elementary modules.- Classification of elementary modules.- Completion of proof.- Classification of -primary modules.- Classification fails in degree 4.- Product structure on -primary modules.- Classification of product structure.- Realization of product structure on homogeneous modules.- Product structure on semi-homogeneous modules.- A non-semi-homogeneous module.- Rational classification of product structure.- Non-singular lattices over a Dedekind domain.- Norm criterion for a non-singular lattice.- Dedekind criterion: p-adic reduction.- A computable Dedekind criterion.- Computation of low-degree cases.- Determination of ideal class group.- The quqdratic symetric case. 124 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -A generalized conjugate direction method and its application on a singular perturbation problem.- Some implementation schemes for implicit Runge-Kutta methods.- Best approximation in tensor product spaces.- Monotonicity and free boundary value problems.- Computing eigenvectors (and eigenvalues) of large, symmetric matrices using Lanczos tridiagonalization.- Horizontal line analysis of the multidimensional porous medium equation: Existence, rate of convergence and maximum principles.- Numerical methods for phase-plane problems in ordinary differential equations.- On the use of exact penalty functions to determine step length in optimization algorithms.- Petrov-Galerkin methods for non-self-adjoint problems.- Collocation and perturbed collocation methods.- Modular analysis of numerical software.- The numerical solution of turbulent flow problems in general geometry.- The rate of convergence of a multiple grid method. 200 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Acknowledgements.- Notation and conventions.- The theory of complex multiplication.- A classification.- Local arithmetic.- Global arithmetic.- The Q-curve A(p). 108 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Steady solutions of the Navier-Stokes equations representing plane flow in channels of various types.- On properties of steady viscous incompressible fluid flows.- Parameterization of subgrid-scale motion in numerical simulation of 2-dimensional Navier-Stokes equation at high Reynolds number.- CO+ -semigroups for flows past obstacles and for flows with capillary surfaces.- A finite element approximation of Navier-Stokes equations for incompressible viscous fluids. Iterative methods of solution.- The initial value problem for the Boussinesq equations with data in Lp.- A finite element method for the simulation of a Rayleigh-Taylor instability.- Spectral calculation of the stability of the circular Couette Flow.- Numerical solution of the complete Navier-Stokes equations for the simulation of unsteady flows.- A survey on the functional dynamical system generated by the Navier-Stokes equations.- Solution of the time-dependent incompressible Navier-Stokes and Boussinesq equations using the Galerkin finite element method.- Auxiliary flux and pressure conditions for Navier-Stokes problems.- Classical solutions of the Navier-Stokes equations.- Direct and repeated bifurcation into turbulence.- Approximation of the hydrodynamic equations by a transport process.- Some decay properties of solutions of the Navier-Stokes equations.- The implicit difference schemes for numerical solving the Navier-Stokes equations.- Finite-difference solutions of the Navier-Stokes equations for axially symmetric flows in spherical gaps.- Numerical investigation of unsteady viscous incompressible flow about bodies for varying conditions of their motion.- On the regularity of solutions of the nonstationary Navier-Stokes equations.- The asymptotic behaviour of solutions of the Navier-Stokes equations near sharp corners.- High resolution spectral calculations of inviscid compressible flows.- Analysis of Navier-Stokes type equations associated to mathematical models in fluid dynamics.- On the finite element approximation of the nonstationary Navier-Stokes problem.- On the convergence rate of nonstationary Navier-Stokes approximations.- Optimisation of Hermitian methods for Navier-Stokes equations in the vorticity and stream-function formulation.- Navier-stokes calculations with a coupled strongly implicit method Part II: Spline deferred-corrector solutions.- Strange attractors and characteristic exponents of turbulent flows.- Selection mechanisms in symmetry breaking phenomena.- High Reynolds-number flows.- Application of spectral methods to the solution of Navier-Stokes equations.- Regularity questions for the Navier-Stokes equations.- Numerical experiments with a multiple grid and a preconditioned Lanczos type method.- New solutions of the Karman problem for rotating flows. 604 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Much modern (Le. post-17S0) economic history is concerned with success in that a vast body of literature focuses its attention upon the experience of industrialisation and economic growth or upon relative differences in performance once the growth process is underway. The explanations advanced frequently hinge on those supply and demand factors, perceptible during the growth period itself, which may have helped or hindered economic progress. The problem which arises with this approach is whether those forces attributed with having pulled a country forward were the same as those which, in their absence, had held it back. For example, the growth of'inter national demand may be seen as a major stimulus in the economic development of a particular country, but its effectiveness as a stimu lant may have been contingent upon the prior removal of quite diffe rent obstacles to growth. In these circumstances it would be quite wrong to attribute lack of earlier development to the absence of international demand. Thus the study of a period preceeding discer nible growth in a sector of the economy may tell historians as much about the reasons for subsequent growth as a study of the growth period itself. This was my initial reason for choosing to research into the industrial development in the Netherlands in the first half of the nineteenth century: that it was an interval in economic history usually interpreted as one of stagnation, of missed opportunities and even of economic decline. 256 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Coronary heart disease is the principal cause of death in all Western countries. Abnormalities in the serum lipids are one of the major risk factors widely recognised as leading to this epidemic of heart disease. These abnormalities occur very com monly in the general community and in general practice, and practitioners are pre vailed upon daily to provide specific advice about diet and cholesterol and to interpret chemical estimations. This is a very emotive area of medicine, one where often the patients most active in seeking advice have the least to gain. On the other hand, there may be young people carrying a severe coronary risk, knowingly or not, who prefer to avoid risk factor in tervention. There are strong vested interests in the commercial world who would prefer to overlook any therapeutic value of dietary modification for selected in dividuals, and others who see great merit in a particular diet. The pharmaceutical in dustry has a vested interest in the cholesterol story as well. The individual doctor needs to decide for himself whether the cholesterol issue requires action or not, and for this he needs access to up to date and relevant data. This is one of the purposes of this book. The use of lipid-lowering therapy is usually quite a straightforward exercise for any medical practitioner, once the decision has been taken to initiate it. 96 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Diminishing Returns is a concept deeply rooted in economic thought. After being introduced by Turgot in 1767 it has become accepted as one of the cornerstones of contemporary economic theory. My interest in this area started in the fall semester of 1971 at U.C. Berkeley where I was enrolled in Professor Ronald W. Shephard's class on the theory of production. Shephard introduced me to his work on the Law of Diminishing Returns, and encouraged me to continue that work. This monograph is a result of my inspiring experience with Professor Shephard; and I am sincerely grateful to him for everything he has taught me. In developing some of the materials in this monograph I have collabo rated with my Swedish friends Leif Jansson and Leif Svensson. It has been a pleasure to work with such capable individuals. For reading and making suggestions on a preliminary version of the monograph, thanks are due to W. Eichhorn, R. Kirk and R. Sato, and of course to my SIu friends Shawna Grosskopf and Dan Primont. I would also like to gratefully acknowledge the support received from a Stiftelsen Siamon grant. Lastbut not least, special thanks are given to Claudia Striegel for her care and patience in typing this manuscript. Rolf Fare October, 1979 Carbondale, Illinois TABLE OF CONTENTS Page CHAPTER 1. DIMINISHING RETURNS 1 1.1 Introduction . 1.2 Restrictions of the Study 3 1.3 Outline of the Monograph. 4 CHAPTER 2. THE PRODUCTION TECHNOLOGY 5 2.1 Introduction . . 112 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -The main aim of this study is to define the clinical criteria which must be considered in order to come to an adequate decision whether a patient with intracranial arteriovenous malformation (AVM) should be operated upon or treated conservatively. A special method was used to reduce the effects of selection. This method made it possible to evaluate the therapeutic efficacy of conservative treatment versus surgery. The method implies that patients with equal combinations of variables (risk profiles) were compared in the two treatment lines. The variables building up the risk-profile pattern were chosen by analysing the decision process, as it was originally practiced by the surgeon who selected and treated the patients of this study. The risk profiles thus described relevant characteristics of the patient and his malformation. The variables were assigned numerical values accord ing to their prognostic value. Summation of the variables making up the risk profile then gives each risk profile a certain value. A low value symbolizes a bad prognosis and a high value a good prognosis in both treatment groups. There were many risk profiles with the same value in both groups and a comparison could be made over a large part of the risk-profile scale. This comparison showed that surgical treatment of A VM can always be justified, although the indications for surgery are less strong in patients with low risk profile values. 96 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -1.0 Introduction.- 2.0 Simulation of regenerative processes.- 3.0 Closed networks of queues.- 4.0 The marked job method.- 5.0 Examples and simulation results.- 6.0 Finite capacity open networks of queues.- 7.0 Marked job simulation via hitting times.- 8.0 The decomposition method.- 9.0 Efficiency of simulation.- 10.0 Networks with multiple job types.- 11.0 Implementation considerations. 220 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Geometric aspects of global bifurcation in nonlinear elasticity.- The branching of solutions of Einstein's equations.- What does supergravity teach us about gravity .- Classical 1/2 spin particles interacting with gravitational fields: A supersymmetric model.- Generalized constraint algorithm and special presymplectic manifolds.- Deformations and quantization.- Holomorphic gauge theory.- A geometric variational formalism for the theory of nonlinear waves.- Geometry of jet bundles and the structure of lagrangian and hamiltonian formalisms.- Involution theorems. 272 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -My first thanks must go to the Electors to Ford's Lectureship in English History in the University of Oxford, who honoured me with the invitation to discharge that formidable responsibility in 1969, generously interpreting the statute so as to allow me to deal with a subject which contained nearly as much Netherlands as it did English history. To Hugh Trevor-Roper, Regius Professor of Modern History in the University of Oxford, and his fellow Electors, I am grateful for much encouragement, guidance and hospitality. The colleagues and pupils upon whom I have from time to time inflicted discussion of problems arising from my subject are far too numerous to be thanked individually. Two must nevertheless be singled out. Vivian Fisher of Jesus College, Cambridge, very kindly read the completed manuscript, and I have benefited by a number of characteristically penetrating comments and suggestions which he made. Geoffrey Parker, Fellow of Christ's College, generously allowed me to make use of his unique knowledge of the Spanish, French and Italian archives to check and supplement my own information. I am deeply grateful to both. Finally, it will be evident that quite apart from my own researches these lectures owe a heavy debt to many scholars, Dutch, Belgian, American and British especially, who have worked in this or related fields of inquiry. I am not less indebted to those from whose interpretations I have ventured to differ than to those with whom I have found myself in agreement. 196 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - Print on Demand Titel. Neuware -The derived exact sequences.- Finite modules.- Realization of finite modules.- i of finite modules.- Product structure on finite modules.- Classification of derived product structure.- Rational invariants.- Z-torsion-free modules.- -only torsion.- Statement of realization theorem.- Inductive construction of derived sequences.- Inductive recovery of derived sequences.- Homogeneous and elementary modules.- Realization of elementary modules.- Classification of elementary modules.- Completion of proof.- Classification of -primary modules.- Classification fails in degree 4.- Product structure on -primary modules.- Classification of product structure.- Realization of product structure on homogeneous modules.- Product structure on semi-homogeneous modules.- A non-semi-homogeneous module.- Rational classification of product structure.- Non-singular lattices over a Dedekind domain.- Norm criterion for a non-singular lattice.- Dedekind criterion: p-adic reduction.- A computable Dedekind criterion.- Computation of low-degree cases.- Determination of ideal class group.- The quqdratic symetric case.Springer-Verlag KG, Sachsenplatz 4-6, 1201 Wien 124 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - Print on Demand Titel. Neuware -A generalized conjugate direction method and its application on a singular perturbation problem.- Some implementation schemes for implicit Runge-Kutta methods.- Best approximation in tensor product spaces.- Monotonicity and free boundary value problems.- Computing eigenvectors (and eigenvalues) of large, symmetric matrices using Lanczos tridiagonalization.- Horizontal line analysis of the multidimensional porous medium equation: Existence, rate of convergence and maximum principles.- Numerical methods for phase-plane problems in ordinary differential equations.- On the use of exact penalty functions to determine step length in optimization algorithms.- Petrov-Galerkin methods for non-self-adjoint problems.- Collocation and perturbed collocation methods.- Modular analysis of numerical software.- The numerical solution of turbulent flow problems in general geometry.- The rate of convergence of a multiple grid method.Springer-Verlag KG, Sachsenplatz 4-6, 1201 Wien 200 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Singularites de Klein ¿ I.- Singularites de Klein ¿ II.- Surfaces de Del Pezzo ¿ I.- Surfaces de Del Pezzo ¿ II ¿ Eclater n points dans P2.- Surfaces de Del Pezzo ¿ III ¿ Positions presque generales.- Surfaces de Del Pezzo ¿ IV ¿ Systemes anticanoniques.- Surfaces de Del Pezzo ¿ V ¿ Modeles anticanoniques.- Resolution simultanee ¿ I ¿ Familles de courbes.- Resolution simultanee ¿ II ¿ Resolution simultanee et cycles evanescents.- Singularites rationnelles de surfaces.- Resolution simultanee de points doubles rationnels.- On deformations of monomial curves.- A, B, C, D, E, F, etc.- Conditions d'adjonction, d'apr¿du val.- Eventails et varietes toriques.- Polyedre de newton, eventail et desingularisation d'apr¿A. N. Varchenko ([1]).- Les anneaux coniques sont de Cohen-Macaulay d'apr¿A.G. Kouchnirenko.- Arcs analytiques et resolution minimale des singularites des surfaces quasi homogenes. 348 pp. Französisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Grandes deviations et applications.- Quelques proprietes asymptotiques des produits de matrices aleatoires.- Inegalites pour martingales a un et deux indices: L¿espace Hp. 356 pp. Französisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - Print on Demand Titel. Neuware -Acknowledgements.- Notation and conventions.- The theory of complex multiplication.- A classification.- Local arithmetic.- Global arithmetic.- The Q-curve A(p).Springer-Verlag KG, Sachsenplatz 4-6, 1201 Wien 108 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - Print on Demand Titel. Neuware -Steady solutions of the Navier-Stokes equations representing plane flow in channels of various types.- On properties of steady viscous incompressible fluid flows.- Parameterization of subgrid-scale motion in numerical simulation of 2-dimensional Navier-Stokes equation at high Reynolds number.- CO+ -semigroups for flows past obstacles and for flows with capillary surfaces.- A finite element approximation of Navier-Stokes equations for incompressible viscous fluids. Iterative methods of solution.- The initial value problem for the Boussinesq equations with data in Lp.- A finite element method for the simulation of a Rayleigh-Taylor instability.- Spectral calculation of the stability of the circular Couette Flow.- Numerical solution of the complete Navier-Stokes equations for the simulation of unsteady flows.- A survey on the functional dynamical system generated by the Navier-Stokes equations.- Solution of the time-dependent incompressible Navier-Stokes and Boussinesq equations using the Galerkin finite element method.- Auxiliary flux and pressure conditions for Navier-Stokes problems.- Classical solutions of the Navier-Stokes equations.- Direct and repeated bifurcation into turbulence.- Approximation of the hydrodynamic equations by a transport process.- Some decay properties of solutions of the Navier-Stokes equations.- The implicit difference schemes for numerical solving the Navier-Stokes equations.- Finite-difference solutions of the Navier-Stokes equations for axially symmetric flows in spherical gaps.- Numerical investigation of unsteady viscous incompressible flow about bodies for varying conditions of their motion.- On the regularity of solutions of the nonstationary Navier-Stokes equations.- The asymptotic behaviour of solutions of the Navier-Stokes equations near sharp corners.- High resolution spectral calculations of inviscid compressible flows.- Analysis of Navier-Stokes type equations associated to mathematical models in fluid dynamics.- On the finite element approximation of the nonstationary Navier-Stokes problem.- On the convergence rate of nonstationary Navier-Stokes approximations.- Optimisation of Hermitian methods for Navier-Stokes equations in the vorticity and stream-function formulation.- Navier-stokes calculations with a coupled strongly implicit method Part II: Spline deferred-corrector solutions.- Strange attractors and characteristic exponents of turbulent flows.- Selection mechanisms in symmetry breaking phenomena.- High Reynolds-number flows.- Application of spectral methods to the solution of Navier-Stokes equations.- Regularity questions for the Navier-Stokes equations.- Numerical experiments with a multiple grid and a preconditioned Lanczos type method.- New solutions of the Karman problem for rotating flows.Springer-Verlag KG, Sachsenplatz 4-6, 1201 Wien 604 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Opening of the Congress by the President of the C.F.E.- Welcoming Address at the Reception Given in the Town Hall in Honour of the Administrators of the C.F.E. and for the Honorary Guests of the Congress.- Welcoming Address.- The Harmonization of Taxes in Europe.- The Treatment of Capital Investments within the EC.- The Taxation of Companies in Europe, with Special Consideration of the Effects of Double Taxation Agreements.- The Net Wealth Tax.- Cooperation in the Field of Tax Consulting between Members of the Same and of Different Liberal Professions.- General Debate.- Resolution.- Closing Address of the President of the C.F.E. 244 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - Print on Demand Titel. Neuware -This book has grown out of a desire to explore the possibilities of using optimizing models in transportation planning. This approach has been followed throughout. Models which combine descriptive and optimizing elements are not treated. The gravity model is here studied as the solution to an optimizing model. In spite of this approach, much of the material shoula be of general interest. Algorithms are not discussed. The author has benefited from discussions with many colleagues. M. Florian suggested the term 'interacti vi ty'. N. F. Stewart and P. Smeds gave many valu able comments on a first draft. M. Beckmann made me think once more about the final chapters. R. Grubbstrem and K. Jornsten helped clarifYing some things in the same chapters. Remaining insufficiencies are due to the author. Gun Mannervik typed with great patience. Linkoping in October 1979 Sven Erlander ABSTRACT The book proposes extended use of optimizing models in transportation plann ing. An entropy constrained linear program for the trip distribution problem is formulated and shown to have the ordinarJ doubly constrained gravity model as its solution. Entropy is here used as a measure of interactivity, which is constrained to be at a prescribed level. In this way the variation present in the reference trip matrix is preserved. (The properties of entropy as a dispersion measure are shortly discussed. ) The detailed mathematics of the optimal solutions as well as of sensitivity and duality are given.Springer-Verlag KG, Sachsenplatz 4-6, 1201 Wien 124 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - Print on Demand Titel. Neuware -Much modern (Le. post-17S0) economic history is concerned with success in that a vast body of literature focuses its attention upon the experience of industrialisation and economic growth or upon relative differences in performance once the growth process is underway. The explanations advanced frequently hinge on those supply and demand factors, perceptible during the growth period itself, which may have helped or hindered economic progress. The problem which arises with this approach is whether those forces attributed with having pulled a country forward were the same as those which, in their absence, had held it back. For example, the growth of'inter national demand may be seen as a major stimulus in the economic development of a particular country, but its effectiveness as a stimu lant may have been contingent upon the prior removal of quite diffe rent obstacles to growth. In these circumstances it would be quite wrong to attribute lack of earlier development to the absence of international demand. Thus the study of a period preceeding discer nible growth in a sector of the economy may tell historians as much about the reasons for subsequent growth as a study of the growth period itself. This was my initial reason for choosing to research into the industrial development in the Netherlands in the first half of the nineteenth century: that it was an interval in economic history usually interpreted as one of stagnation, of missed opportunities and even of economic decline.Springer-Verlag KG, Sachsenplatz 4-6, 1201 Wien 256 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - Print on Demand Titel. Neuware -Opening of the Congress by the President of the C.F.E.- Welcoming Address at the Reception Given in the Town Hall in Honour of the Administrators of the C.F.E. and for the Honorary Guests of the Congress.- Welcoming Address.- The Harmonization of Taxes in Europe.- The Treatment of Capital Investments within the EC.- The Taxation of Companies in Europe, with Special Consideration of the Effects of Double Taxation Agreements.- The Net Wealth Tax.- Cooperation in the Field of Tax Consulting between Members of the Same and of Different Liberal Professions.- General Debate.- Resolution.- Closing Address of the President of the C.F.E.Springer-Verlag KG, Sachsenplatz 4-6, 1201 Wien 244 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - Print on Demand Titel. Neuware -Diminishing Returns is a concept deeply rooted in economic thought. After being introduced by Turgot in 1767 it has become accepted as one of the cornerstones of contemporary economic theory. My interest in this area started in the fall semester of 1971 at U.C. Berkeley where I was enrolled in Professor Ronald W. Shephard's class on the theory of production. Shephard introduced me to his work on the Law of Diminishing Returns, and encouraged me to continue that work. This monograph is a result of my inspiring experience with Professor Shephard; and I am sincerely grateful to him for everything he has taught me. In developing some of the materials in this monograph I have collabo rated with my Swedish friends Leif Jansson and Leif Svensson. It has been a pleasure to work with such capable individuals. For reading and making suggestions on a preliminary version of the monograph, thanks are due to W. Eichhorn, R. Kirk and R. Sato, and of course to my SIu friends Shawna Grosskopf and Dan Primont. I would also like to gratefully acknowledge the support received from a Stiftelsen Siamon grant. Lastbut not least, special thanks are given to Claudia Striegel for her care and patience in typing this manuscript. Rolf Fare October, 1979 Carbondale, Illinois TABLE OF CONTENTS Page CHAPTER 1. DIMINISHING RETURNS 1 1.1 Introduction . 1.2 Restrictions of the Study 3 1.3 Outline of the Monograph. 4 CHAPTER 2. THE PRODUCTION TECHNOLOGY 5 2.1 Introduction . .Springer-Verlag KG, Sachsenplatz 4-6, 1201 Wien 112 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - Print on Demand Titel. Neuware -The main aim of this study is to define the clinical criteria which must be considered in order to come to an adequate decision whether a patient with intracranial arteriovenous malformation (AVM) should be operated upon or treated conservatively. A special method was used to reduce the effects of selection. This method made it possible to evaluate the therapeutic efficacy of conservative treatment versus surgery. The method implies that patients with equal combinations of variables (risk profiles) were compared in the two treatment lines. The variables building up the risk-profile pattern were chosen by analysing the decision process, as it was originally practiced by the surgeon who selected and treated the patients of this study. The risk profiles thus described relevant characteristics of the patient and his malformation. The variables were assigned numerical values accord ing to their prognostic value. Summation of the variables making up the risk profile then gives each risk profile a certain value. A low value symbolizes a bad prognosis and a high value a good prognosis in both treatment groups. There were many risk profiles with the same value in both groups and a comparison could be made over a large part of the risk-profile scale. This comparison showed that surgical treatment of A VM can always be justified, although the indications for surgery are less strong in patients with low risk profile values.Springer-Verlag KG, Sachsenplatz 4-6, 1201 Wien 96 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - Print on Demand Titel. Neuware -Coronary heart disease is the principal cause of death in all Western countries. Abnormalities in the serum lipids are one of the major risk factors widely recognised as leading to this epidemic of heart disease. These abnormalities occur very com monly in the general community and in general practice, and practitioners are pre vailed upon daily to provide specific advice about diet and cholesterol and to interpret chemical estimations. This is a very emotive area of medicine, one where often the patients most active in seeking advice have the least to gain. On the other hand, there may be young people carrying a severe coronary risk, knowingly or not, who prefer to avoid risk factor in tervention. There are strong vested interests in the commercial world who would prefer to overlook any therapeutic value of dietary modification for selected in dividuals, and others who see great merit in a particular diet. The pharmaceutical in dustry has a vested interest in the cholesterol story as well. The individual doctor needs to decide for himself whether the cholesterol issue requires action or not, and for this he needs access to up to date and relevant data. This is one of the purposes of this book. The use of lipid-lowering therapy is usually quite a straightforward exercise for any medical practitioner, once the decision has been taken to initiate it.Springer-Verlag KG, Sachsenplatz 4-6, 1201 Wien 96 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - Print on Demand Titel. Neuware -1.0 Introduction.- 2.0 Simulation of regenerative processes.- 3.0 Closed networks of queues.- 4.0 The marked job method.- 5.0 Examples and simulation results.- 6.0 Finite capacity open networks of queues.- 7.0 Marked job simulation via hitting times.- 8.0 The decomposition method.- 9.0 Efficiency of simulation.- 10.0 Networks with multiple job types.- 11.0 Implementation considerations.Springer-Verlag KG, Sachsenplatz 4-6, 1201 Wien 220 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - Print on Demand Titel. Neuware -Geometric aspects of global bifurcation in nonlinear elasticity.- The branching of solutions of Einstein's equations.- What does supergravity teach us about gravity .- Classical 1/2 spin particles interacting with gravitational fields: A supersymmetric model.- Generalized constraint algorithm and special presymplectic manifolds.- Deformations and quantization.- Holomorphic gauge theory.- A geometric variational formalism for the theory of nonlinear waves.- Geometry of jet bundles and the structure of lagrangian and hamiltonian formalisms.- Involution theorems.Springer-Verlag KG, Sachsenplatz 4-6, 1201 Wien 272 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - Print on Demand Titel. Neuware -My first thanks must go to the Electors to Ford's Lectureship in English History in the University of Oxford, who honoured me with the invitation to discharge that formidable responsibility in 1969, generously interpreting the statute so as to allow me to deal with a subject which contained nearly as much Netherlands as it did English history. To Hugh Trevor-Roper, Regius Professor of Modern History in the University of Oxford, and his fellow Electors, I am grateful for much encouragement, guidance and hospitality. The colleagues and pupils upon whom I have from time to time inflicted discussion of problems arising from my subject are far too numerous to be thanked individually. Two must nevertheless be singled out. Vivian Fisher of Jesus College, Cambridge, very kindly read the completed manuscript, and I have benefited by a number of characteristically penetrating comments and suggestions which he made. Geoffrey Parker, Fellow of Christ's College, generously allowed me to make use of his unique knowledge of the Spanish, French and Italian archives to check and supplement my own information. I am deeply grateful to both. Finally, it will be evident that quite apart from my own researches these lectures owe a heavy debt to many scholars, Dutch, Belgian, American and British especially, who have worked in this or related fields of inquiry. I am not less indebted to those from whose interpretations I have ventured to differ than to those with whom I have found myself in agreement.Springer-Verlag KG, Sachsenplatz 4-6, 1201 Wien 196 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -This book has grown out of a desire to explore the possibilities of using optimizing models in transportation planning. This approach has been followed throughout. Models which combine descriptive and optimizing elements are not treated. The gravity model is here studied as the solution to an optimizing model. In spite of this approach, much of the material shoula be of general interest. Algorithms are not discussed. The author has benefited from discussions with many colleagues. M. Florian suggested the term 'interacti vi ty'. N. F. Stewart and P. Smeds gave many valu able comments on a first draft. M. Beckmann made me think once more about the final chapters. R. Grubbstrem and K. Jornsten helped clarifYing some things in the same chapters. Remaining insufficiencies are due to the author. Gun Mannervik typed with great patience. Linkoping in October 1979 Sven Erlander ABSTRACT The book proposes extended use of optimizing models in transportation plann ing. An entropy constrained linear program for the trip distribution problem is formulated and shown to have the ordinarJ doubly constrained gravity model as its solution. Entropy is here used as a measure of interactivity, which is constrained to be at a prescribed level. In this way the variation present in the reference trip matrix is preserved. (The properties of entropy as a dispersion measure are shortly discussed. ) The detailed mathematics of the optimal solutions as well as of sensitivity and duality are given. 124 pp. Englisch.

Buch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -The ene10sed ~roeeedings of the NATO Advaneed Study Institute held in September 1979 are intended to provide a eomprehensive introduetion to the development of semie1assiea1 methods for mo1eeu1ar seattering and speetroseopy over the past twenty years. Progress in the seattering field may be taken to date from the famous paper by Ford and Wheeler in 1959, and eoineidenta1ly the RKR teehnique for diatomie speetroseopy was rediseovered at roughly t~e' same time. Subsequent developments have e~hasised the insight to be gained by eombining elassica1 and quant~ meehaniea1 ideas in a wide variety of more eOMplicated problems. Three main types of development may be recognised. First advances have oeeu~ed in mathematical teehnique, both in the development of higher order JWKB and phase integral expansions at dtscussed in chapters 1 and 3, and also in the use of uniform approximations to remove the spurious singularities inherent in the primitive JWKB approaeh. The latter are introduced in the conteat of elastic scattering in Chapter 2, and later recur in other app1ieations in ehapters 4 and 5. A second development has been to extend semie1assiea1 ideas to tunneling and curve-crossing situations. Here spectroscopic applicati. ons of this type are covered in chapter 4, and scattering situations are treated under the heading of non-adiabatic transitions in chapter 6. Finally major progress hs. s been made over the past ten years in the treatment of non-separable situations. 348 pp. Englisch.