für 53.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Let R be an associative ring with center Z(R) . One of the important problems of Ring Theory is to determine whether this ring is commutative or not. The main purpose of this book to shows that the structure of a semiprime ring is very tightly determined by the imposition of a special behavior on one of these derivations(resp.generalized derivation, -derivation and Bi-derivation). We have studied some of these results and supply the details of the proofs and we also prove the results that appeared without proof, we illustrate some of these results by examples. Moreover, we add some results that seems to be new to the best of our knowledge. As usual, [x,y] will denote the commutator and (xoy) anti-commutator. ····· 1036121105
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray A class of nonlinear diffusion equations with a power-law dependence of the coefficient on the gradient is considered. Such equations are used in the problem of suppressing image noise. The mathematical properties of this class of equations are considered. One of them ensures protection of image edges. Computational results on noise elimination in real-life images are presented. The book is intended for scientists and engineers working in mathematical physics, differential equations, and image processing and for college and university professors and postgraduate and graduate students. ····· 1036121102
für 53.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Technological breakthrough is an essential input for increasing the production of agriculture or industry. Proper application of viable technology assumes paramount importance in this regard, which will be known from an in-depth analysis and understanding of the efficiencies that emerge from production functions and frontier production function of various farms or firm groups. Frontier production functions are gaining much importance in recent studies because of their role in measuring the various types of efficiencies of farms. This trend gives measure of inefficiencies of farms which are very important in economic decision making process. An attempt is made in this book to measure the farm specific efficiency by modifying the existing models with reference to sugarcane farms.The analysis of efficiencies of these different models will help not only the farms to make appropriate use of these techniques but also the developmental persons in choosing and suggesting the most effective model for unearthing various parameters contributing to the farm efficiency specific to individual and group farms. ····· 1036121075
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray The main purpose of this study was to develop the general mass and stiffness matrices for standard beam equation and eventually obtain the finite element equations for mbira reed. So far few studies have been done on mathematical modelling of a beam using finite elements, with applications to an mbira reed. However none of these studies had considered the aspect of a tapering mbira reed. Thus, the study also intends to examine the relationships that exist between the natural frequencies and the varying dimensions and properties of the mbira reed. The finite element method was used as a numerical method to solve the mathematical model of the mbira reed. A MATLAB code was prepared for the same. The usefulness of this study is that -mbira manufacturers may use the results to select the type and dimensions of metal suitable for mbira reeds. -the outcomes add more knowledge to the existing literature on mbira. -modellers may develop interest to conduct more studies on mbira. - it is useful to engineers who mostly use finite element method in designing and development of different products. ····· 1036120973
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Welfare state of the people has been an elusive term to measure over the years and as such giving it a near quantitative measure has not been adequately addressed. This book, therefore, presents Lagrangean methods in developing a theoretical welfare measurement model, which is used in measuring the welfare state of the people and setting up the right strategies for improving it. The results show that welfare measurement is dependent on the average society budgetary allocation and prices of the products utilized. Any variation on these parameters brings about a significant variation on the welfare state of the people. The work is, therefore, important to individuals in making decisions about their welfare state, to the government in setting up strategies for improving the welfare state of its people, and to the trade unions in their continuous tussle with employers in trying to improve the welfare state of the workers. ····· 1036120901
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray _There is much literature available regarding the subject of solving the two-dimensional steady-state transport equation that it would be impossible to mention all of them. Nevertheless, the literature concerning convergence and the estimative of the error is scarce. Therefore in this thesis we focus our attention in this direction. In the first part we study the spectral Chebyshev polynomial expansion combined with the Sumudu transform leading to solve, analytically , the neutron transport equation in isotropic one-dimensional media. Next we study the convergence as well as an estimative of error for the spectral solution of the isotropic two-dimenssional discrete ordinates problem where a special quadrature rule is used to discretize in the angular variables, approximating the scalar flux. Finally the spectral equation is derived in a three dimensional setting. ····· 1036120883
für 71.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray This book is the first monograph where the problem of strong (mean-square) approximation of multiple Ito and Stratonovich stochastic integrals is sistematically analyzed in the context of numerical integration of stochastic differential Ito equations. This monograph for the first time successfully use the tool of multiple and iterative Fourier series, built in the space L2 and poitwise, for the strong approximation of multiple stochastic integrals. We obtained a general result connected with expansion of multiple stochastic Ito integrals with any fixed multiplicity k, based on generalized multiple Fourier series converging in the space L2. This result is adapted for multiple Stratonovich stochastic integrals of 1-4 multiplicity for Legendre polynomial system and system of trigonometric functions. This monograph open a new direction in researching of multiple Ito and Stratonovich stochastic integrals. This book will be interesting for specialists dealing with the theory of stochastic processes, applied and computational mathematics, senior students and postgraduates of technical institutes and universities, as well as for computer experts. ····· 1036120767
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray The secondary Oil recovery process is related with the Hele-Shaw immiscible displacement. A middle-layer (M.L.) is considered between the displacing fluid (water) and oil, containing a polymer solute, where the viscosity is an unknown parameter. We minimize the Saffman-Taylor instability, searching for the optimal viscosity in M.L. which gives a minimal growth constant of perturbations. We solve this optimization problem by using the methods of functional and numerical analysis for the Sturm-Liouville problems which govern the flow stability in such three-layer Hele-Shaw cells.The obtained formulas for the optimal viscosities are giving an almost neutral stability and are in accord with previous experimental and numerical results. We study the variable permeability and diffusion effects. We compute the necessary polymer amount and M.L. length for a given minimization of the fingering phenomenon. Some surfactant effects on rising gas-bubbles in capillary tubes are also studied. ····· 1036120666
für 53.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray `Camina (Con-Cos) Groups` is a comprehensive study of Camina groups. Presupposing the basic knowledge of group theory, this monograph introduces the reader to the principal accomplishments and most recent developments in this area. New concepts like infinite Camina group, Or-Con group and Or-Cos group open up new areas of investigation for the researchers who are working in this field. Numerous examples are given which supplement the material in text. ····· 1036120415
für 61.20€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray The present text, Semi-invariant Submanifolds is devoted to the study of semi-invariant submanifolds of manifold equipped with certain distinguished structures and connections. The structures such as Sasakian, trans Sasakian, Kenmotsu manifold is one of the most interesting topic in the differential geometry of the manifolds. In a manifold with an almost contact metric structure, the (1, 1) structure vector field transforms a vector into a vector perpendicular to it. Thus it becomes a natural motivation to study submanifold of a manifold with almost contact metric structure, according to the behavior of its tangent bundle under the action of the (1, 1) structure vector field of the ambient manifold. There are two well known classes of submanifolds, namely invariant submanifolds and anti-invariant submanifolds. In the first case the tangent spaces of the sub-manifolds remains invariant under the action of the (1, 1) structure tensor field, whereas in the second case it is mapped into the normal space. ····· 1036120360
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray In this book we concerned with extending the folding and unfolding of manifolds to a folding and unfolding of a fundamental group. The relations between the folding and the deformation retract on the fundamental group are discussed. The folding and unfolding on a wedge sum and a connected sum of some types of manifolds are obtained. Some types of conditional foldings restricted on the elements of the fundamental groups are deduced. The concept of foldings will be discussed from view point of algebra. The effect of retractions of manifolds on the fundamental group is obtained . Moreover, we introduce new type of the fundamental group called chaotic fundamental group. Some applications in manufacturing are presented. ····· 1036120343
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray In mathematical bio-sciences we study the applications of mathematical modeling and mathematical techniques to get an insight into the problems of bio-sciences. The mathematical model is a comprehensive process of representing real Phenomena in terms of Mathematical Equations, and extracting from them useful information for understanding and predicting the process of idealization. The study of blood flow characteristics in human circulatory system in the presence of stenosis, has been the subject of researchers in recent years. A serious study of this problem has been done by Young 1968 who presented a mathematical model to analyses theoretically the effects of stenosis on flow characteristics of blood and concluded that the resistance to the flow and the wall shear stress increase with the increase in stenosis size. The blood flow through large arteries considered as Newtonian flow by Lee JS 1974. while the blood flow through small arteries is considered as non-Newtonian by Chan et all 2007. ····· 1036120341
für 61.20€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray A structure is Ramseyian if whenever it is divided into r classes, one of the classes exhibits properties similar to the whole structure. One of the concerns of Ramsey Theory is finding the smallest integer or set size for which a particular property holds. The Hales-Jewett Theorem is one of the major results of Ramsey Theory. In this work, the existence of minimal Hales-Jewett sets is established, and one is specifically identified. ····· 1036120238
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray A fluid is defined as a substance that continually deforms when shear forces are applied regard-less of how small the shear forces may be. It has no definite shape of its own.It experiences relative motion between their elementary parts as long as shearing forces are present. It includes liquids, gases, plasma and to some extent plastic solid.It is the branch of continuum mechanics that examines the nature and properties of Fluids, both at rest and in motion. ····· 1036120235
für 35.91€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray The optimal control problems governed by partial differential equations have developed very fast in the last 30 years, and it has brought a promising and vital researching domain to the subject of mathematics. The optimal control problems governed by partial differential equations concern many applications in physics, chemistry, biology, etc., such as materials design, crystal growth, temperature control, petroleum exploitation, and so on. The partial differential equations involved in these problems include elliptic equations, parabolic equations and hyperbolic equations. Our objective of this book, which consists of three chapters, aims to introduce the analytical and numerical solutions of constrained optimal control problems of quasilinear parabolic systems. ····· 1036120164
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Some people think mathematics is nothing more than adding numbers. In fact, it is more about studying all kinds of abstract structures. Granted, often in the hope that it leads to some numbers we can add! A beautiful example of such a structure is the symmetric group and this is really the backbone of this book. The object is needed to eventually introduce Bruhat cells, a subject that is still very much alive in the world of research. However, on its own, the symmetric group is very interesting as well, as it tends to pop up everywhere in mathematics and physics and is often used as a `tool` in the various fields. Although this may all sound very vague and sketchy, this book is really aiming at the opposite using mathematically rigorous methods to guide you every step of the way. In here you will find correct and complete proves where possible alongside many examples to help you develop the needed intuition. Although this book is originally a bachelor`s thesis, you only need basic knowledge of matrices and groups to fully understand it. ····· 1036120103
für 53.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray The movement of goods and services is vital for sustaining the economy and people`s quality of life. The effective study, planning, analysis and design of freight and logistics is key to providing sustainable freight transport systems in both urban and rural areas within countries, as well as links across the world. To enable and encourage efficient planning and operations, a thorough understanding of how to quantify and predict the demand for freight and logistics services must be known. This book provides the theory of the principles of freight transport modelling for all modes of logistics, relating them to current state-of-the-art modelling techniques and data collection methods. As well as a theoretical base, a review of practical procedures for modelling freight and logistics is presented, highlighting different options available for specific levels of studies. The book describes the key factors influencing the demand for freight and how different logistics strategies can be applied together. Using a real-life example, this book demonstrates how models can be applied, the range of data and assumptions needed, typical model outputs gained and how results can be interpreted. ····· 1036120031
für 53.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray The importance of the nonlinear systems due to their common occurrence in the study of physical phenomena and also the various limitations posed by the linear systems theory have been the prime reasons for the studies of nonlinear models as such. The physical situations in which nonlinear equations arise tend to be highly idealized with the assumption of constant coefficients. Due to this, much attention has been paid on study of nonlinear equations with variable coefficients. This book deals with nonlinear partial differential equations with variable coefficients representing some interesting physical systems viz. coupled KdV system, generalized Hirota-Satsuma KdV, variant Boussinesq, modified Boussinesq and a family of non-evolution equations, from the view point of their underlying Lie point symmetries and to obtain their exact solutions. Since the nonlinear systems with variable coefficients are very difficult to handle, hence this book shall provide freedom for the researchers to obtain the symmetries and exact solutions for variable coefficients nonlinear systems and further to simulate the desired physical situations. ····· 1036119977
für 53.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray This text contains a concise collection of papers published in international journals and work given at mathematics conferences and seminars. It is assumed that the reader is familiar with the knowledge of the concepts of group theory and ring theory offered in undergraduate courses in modern algebra. The main objective of this text is to bring to a wider research audience a readable and rigorous account of a certain type of finite rings and solve some concrete algebraic problems of determining the structure of their groups of units. The book is divided into two parts. The first is concerned with defining concepts and terminology, assembling elementary facts and developing the theory of completely primary finite rings. The second, and the most important part, concerns the problem of determining the structure of the group of units of these rings. Graduate students wishing to acquire some knowledge of finite ring theory and structure of their groups of units will find this an excellent text for self-study. ····· 1036119903
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray The study of random graphs is a field that emerged in the second half of the 20th century. Most of the work in this area is combinatorial in nature: a random model is assumed and used for computing various asymptotic properties on the graph. The work contained in this book takes a reverse approach. Our questions are: given a large graph realization, what can we learn about it How can we hypothesize an underlying model How can we test the graph for the hypothesis The first half of the book is a survey of some well-known and less well-known methods, and apply some of them on various `scale-free` graphs, including the famous Albert-Barabási graph model. Then we proceed beyond the scale-free realm to examine the problem of generation uniformly distributed graphs with a given expected degree sequence. We hope every reader will find something to enjoy in and/or learn from the book. ····· 1036119893
für 71.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray The present work will investigate the projective special linear group of dimension 10 over a finite field Fq i.e PSL(10, 2^n)and its maximal subgroups. The main result is a list of maximal subgroups called `the main theorem` which has been proved by using the following well known result `That the minimal normal subgroup of any finite group is either an elementary abelian p-group for some prime number p or a direct product of isomorphic non-abelian simple groups`. So, we divided our work into four chapters, the first one `background materials`, while chapter two covers, the calculation of the conjugacy classes and the structure of centralizer for the linear group of dimension 10 over a finite field Fq . Chapter three deals with the local analysis for calculating the imprimitive subgroups of G. The fourth chapter deals with the minimal normal subgroups which are the direct product of isomorphic non-Abelian simple groups, this chapter contains three cases: The minimal normal subgroups contains transvections.The minimal normal subgroups does not contain any transvection. The minimal normal subgroups is doubly transitive. ····· 1036119765
für 71.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray The aim of Higher Engineering Mathematics is to make the students and researchers think mathematically and develop mathematical maturity. Engineering mathematics is crucial to all aspects of engineering and technology, the understanding of which is necessary for every engineering student. The present book highlights the developments concerned with the engineering mathematics and the material is so structured that the ordinary students build up their knowledge and understanding gradually. The interactive examples have been carefully designed to encourage students to engage fully in the problem-solving process. ····· 1036119737
für 71.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Fundamentals of Mathematics is a foundational text book for senior secondary school students and has the following features:simple and concise presentation of basic concepts,step by step explanation of solutions to problems,numerous worked examples,review exercises with answers at the end of the book,simple and clear usage of language,sound treatment of subject matter and concepts are related to situations within the students` experience and comprehension. ····· 1036119691
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray The relationship between the subgroups of a finite group G and the structure of G has been extensively studied in group theory. It is interesting to use some information on the subgroups of a finite group G to determine the structure of a group G, so from the beginning`s of group theory we see that some scientists interest in this side. The normality of subgroups of a finite group plays an important role in the studying of a finite group. Recently, the concepts of cs-normal subgroups was introduced by AL-Tahat in his M. Sc. thesis as a generalization for weakly c-normal subgroups by replaced the normal condition with the subnormal condition in the definition of weakly c-normal subgroup, and used the cs- normality to determine the structure of some groups. As well as, several examples and properties of cs- normal subgroups were proved. Throughout this thesis, all groups considered are finite. The main goal of this thesis is to study some properties of weakly c-normal and cs- normal subgroups of a finite group, and to use the weakly c-normality and cs-normality of some Sylow and maximal subgroups to determine the Structure of some finite groups. ····· 1036119686· 1 · ::::: · 20 ·· 21 ·· 22 ·· 23 ·· 24 ·· 25 ·· 26 · ::::: · 29 ·
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