für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Ministry of Education, Ghana developed an Education Strategic Plan (ESP) that will provide a strategic framework to guide the development of the education with the aim of improving quality of teaching and learning in order to enhance student achievement. However, during a survey it was identified that students at the Junior High Schools progressed from one stage to another with misconceptions in some topics in Mathematics which was attributed to teachers low Pedagogical Content Knowledge (PCK). It became necessary to explore teachers PCK since it could continue to affect students achievement in Mathematics. Forty teachers were purposively sampled for the study. Students common misconceptions in addition and division of fractions were used to construct four in-class problems on and then administered to teachers to explain students reasoning. Responses from teachers were analyzed with a PCK framework an adapted from previous researchers. ····· 10361146876
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Angular-resolved optical scatterometry is a new promising technology for metrology in lithography for the construction of VLSI chips such as DRAMs and CPUs. In order to measure the geometry dimensions and material properties of markers and interconnect lines, one needs to solve Maxwell`s equations for an electromagnetic scattering problem. The well known RCWA discretization method is too slow for 3D applications whence one takes resort to either a finite element discretization method or a volume integral method (VIM). VIM systems of equations can be solved faster than FEM systems of equations. This book focuses on an iterative solution of linear systems emanating from VIM. Each different linear system depends in a non-linear manner on several geometry, material and incoming light-wave parameters. For a typical 2D-periodic application on resist, VIM is a factor of 20 faster than RCWA. The VIM discretization leads to a dense complex linear system for the electric field for a 2D-periodic grating (3D Maxwell`s equations). The coefficient matrix A is almost full but matrix-vector multiplications can be performed. Therefore systems should be solved with an iterative solution method. ····· 10361146866
····· lezzter Preis 71.10€ ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray A worldwide interest exists today in drilling horizontal wells to increase productivity. The primary focus of this book is to derive productivity formulae for horizontal wells in anisotropic reservoirs using straight forward mathematical techniques. For horizontal wells, steady state and unsteady state pressure transient testings are useful tools for evaluating in-situ reservoir and wellbore parameters that describe the production characteristics of a well. Formulae presented in this book are based on analytical solutions to the diffusivity equations in petroleum reservoir engineering. This book is arranged so that it can be used as an engineering mathematics textbook for graduate students in petroleum reservoir engineering, and can help the students have a complete understanding how mathematics can solve complex problems in reservoir engineering. This book is also a reference book for research scientists in petroleum industry and practicing reservoir engineers. ····· 10361146787
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray This is nearly a century that dimension theory plays a crucial role in topology. Almost zero-dimensionality as a dimension theoretic concept that fits neatly between zero- and one-dimensionality introduced in 1994 and the famous Erdos space is a universal object in the class of all almost zero-dimensional spaces. The main aim of this book is to find the right way to extend almost-zero dimensionality, that is, to develop a dimension theory on the basis of this notion. We introduce the notion of an almost n-dimensional space. In this way an important result is a topological analogue of the classic Kadec Renorming Theorem for Banach spaces which produces an elegant topological characterization of our new concept. Construction of higher dimensional analogues of complete Erdos space that are universal spaces for almost n-dimensionality is another interesting result. This book may be readable and useful for anyone interested to mathematical analysis or general topology. ····· 10361146776
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray This monograph deals with Introduction, Basic Concepts, Brief Review of Regression Theory. It present the work related to Least Absolute Deviations (LAD) Regression and its estimation theory with and without auto correlated errors. LAD and Least Squares estimation of censored regression model with fixed and marginal effects are also discussed. Further, it contains LAD estimation for linear and nonlinear regression model for truncated and censored data. ····· 10361146753
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray The principal object of this book is to discuss in detail the influence of character degrees on the structure of finite groups especially solvable groups. Character theory has very strong interplay with group structure. In the last two decades, a number of papers has appeared that indicates the existence of a connection between the character degree set of a finite group and its structure . It is not difficult to see that the character degree set of a finite group does not completely determine the structure of the group , and in fact , it often gives us little information about the structure of the group . In this book, we present a problem arising in a particular character degree set. We look at a particular character degree set and we obtain strong structural information about the group more than what we expected . This gives more evidence to the existence of a deep connection between the structure of a group and its character degree set if this set is reasonably specified. This book will be useful to graduate students and researchers providing an up-to-date account of character theory of finite groups and related topics. ····· 10361146734
für 71.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Holk Cruse`s system-level model of coordination can account for gait transitions in arthropods analogous to: walk, trot, gallop in quadrupeds. It has been adapted to control locomotion in a series of hexapod robots. Gaits emerge from interaction among pairs of legs as effected by simple discrete-event coordination mechanisms, abstracting physiology and dynamics. We represent this model as systems of coupled hybrid dynamic oscillators. Gaits are quantified by a discrete phase vector. Using numerical and symbolic Monte Carlo simulations, synchronization of coupled oscillators networks can be studied parametrically. A constructive, section-map approach that exploits the polyhedral geometry is developed. Periodic orbits, their domains of admissibility and stability, as well as expressions for the period of oscillation and relative phases can be computed. For 2-oscillator networks, we observe agreement with simulation results. Analysis of larger networks may benefit from consideration of Virtual Periodic Orbits, defined on the affine hull of the original dynamics. Virtual orbits are canonical precursors for a class of non-smooth bifurcations and predictive of long transient behavior. ····· 10361146598
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray In the practice of statistical modeling, it is often desirable to have an accurate predictive model. Modern data sets usually have a large number of predictors.Hence parsimony is especially an important issue. Best-subset selection is a conventional method of variable selection. Due to the large number of variables with relatively small sample size and severe collinearity among the variables, standard statistical methods for selecting relevant variables often face difficulties. Bayesian stochastic search variable selection has gained much empirical success in a variety of applications. This book, therefore, proposes a modified Bayesian stochastic variable selection approach for variable selection and two/multi-class classification based on a (multinomial) probit regression model.We demonstrate the performance of the approach via many real data. The results show that our approach selects smaller numbers of relevant variables and obtains competitive classification accuracy based on obtained results. ····· 10361146548
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray New to group theory or abstract algebra, this is the right book for you. This group has a lot of basic definitions of group theory terms with examples and a step by step prove of basic theorems/lemmas in the preliminaries. It has a chapter on nilpotent groups, which gives definition of a nilpotent group,examples of a nilpotent groups and some step by step proves of lemmas/theorem. It also has a chapter on solvable groups which gives definition of solvable group,examples of a solvable groups and some step by step proves of lemmas/theorem. The Hall and Schur-Zassenhaus Theorems defined and examples given with proves of lemmas/theorems. Carter subgroup defined and examples of groups with cater subgroups given with explanations. Examples of groups with no Cater subgroup was also given with detailed explanation. A detailed and step by step prove of Carter`s theorem given. ····· 10361146520
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray The problem of scheduling n jobs each of which must be processed by m machines with shop dependent processing order is examined. If the order in which a given job is processed on the machine is not fixed, the system is called an open shop. This situation might occur in testing components of an automobile. The computational difficulty of solving most open shop problem is known with the majority being NP- hard. In shop scheduling problem, a combination of machine order and job order is represented by a shop graph or by the corresponding rank matrix pair (MO, JO). A task is to determine an optimal feasible sequence. Various models of mathematics have been presented to solve different shop scheduling problems. Here, the disjunctive graph model, block matrices model without preemption and with preemption and linear programming models are studied. Some problems have also been represented by Gantt charts. Polynomial time algorithms have been presented with complexity analysis. Some NP- hard problems are also discussed in both cases with preemption and without preemption. ····· 10361146517
für 61.20€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray The aim of this book is to introduce and study some chaotic and hyperchaotic complex nonlinear systems. Basic properties of these systems including symmetry, dissipation and stability of the equilibrium points are analyzed. The dynamics of these systems is rich in the sense that our systems exhibit chaotic, hyperchaotic attractors, periodic, quasi-periodic solutions and solutions that approach fixed points. Numerically the range of parameters values of the system at which hyperchaotic attractors exist is calculated based on the calculations of Lyapunov exponents. The signs of Lyapunov exponents provide a good classification of these systems. The dynamics of these systems is also studied by calculating its bifurcation diagrams. A circuit diagram is designed for one of hyperchaotic complex systems in chapter 5 and simulated using Matlab/Simulink to verify the hyperchaotic behavior. The problem of chaos and hyperchaos control is treated by adding the complex periodic forcing. The control performances are verified by calculating Lyapunov exponents. ····· 10361146346
····· lezzter Preis 53.10€ ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Scientists are, all the time, in a struggle with uncertainty which is always a threat to a trustworthy scientific knowledge. A very simple and natural idea, to defeat uncertainty, is that of enclosing uncertain measured values in real closed intervals. On the basis of this idea, interval arithmetic is constructed. The idea of calculating with intervals is not completely new in mathematics: the concept has been known since Archimedes, who used guaranteed lower and upper bounds to compute his constant Pi. Interval arithmetic is now a broad field in which rigorous mathematics is associated with scientific computing. This connection makes it possible to solve uncertainty problems that cannot be efficiently solved by floating-point arithmetic. Today, application areas of interval methods include electrical engineering, control theory, remote sensing, experimental and computational physics, chaotic systems, celestial mechanics, signal processing, computer graphics, robotics, and computer-assisted proofs. The purpose of this book is to be a concise but informative introduction to the theories of interval arithmetic as well as to some of their computational and scientific applications. ····· 10361146262
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray During my Ph.D certain aspects of submanifolds theory in the setting of complex as well as contact manifolds has been studied, in my thesis we have extended several results of submanifolds theory in more general settings. The setting of trans-Sasakian manifolds in a way unifies the two classes of manifolds namely Sasakian manifold and other Kenmotsu manifold. By studying submanifolds of a trans-Sasakian manifold, one clearly finds out the deviations in the geometric behavior of submanifold in Sasakian and kenmotsu manifolds. With this motivation we have studied slant and semi-slant submanifolds of trans-Sasakian manifold and obtained a criterion for existence of slant submanifold in a trans-Sasakian manifold. Pseudo-slant submanifold is a special case of bi-slant submanifold, we describe a method of constructing pseudo-slant submanifold in an almost contact manifold. Moreover, a formula for covariant derivative of the endomorphism T is established which ensures the existence of a pseudo-slant submanifold of a sasakian manifold. Next, we also obtained a classification of totally umbilical semi-invariant submanifolds of a nearly trans-Sasakian manifold. ····· 10361146261
für 61.20€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Vibrations and dynamic chaos are undesired phenomenon in structures as they cause the 4D. They are: disturbance, discomfort, damage and destruction of the system or the structure. For these reasons, money, time and effort are spent to eliminate or control vibrations,noise and chaos or to minimize them. The main object of this thesis is the investigation of the behavior two systems. They are simple and spring pendulums. A tuned absorber (passive control), in the transverse direction and/or the longitudinal one is connected to both systems to reduce the oscillations. Negative velocity feedback or its quadratic or cubic value is applied to the systems (active control). Also active control is applied to the systems via negative acceleration feedback or negative angular displacement or its quadratic or cubic value. Multiple scale is applied to determine approximate closed form solutions for the differential equations describing the systems. Both frequency response equations and the phase plane technique are applied to study systems stability. Optimum working conditions of both systems are extracted when applying both passive and active control, to be used in the design of such systems. ····· 10361146176
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