für 61.20€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray In this book wavelength division multiplexing (WDM) and dense WDM (DWDM) systems are designed. The practical components of WDM system models have been simulated through software to understand the behavior of these components and overall system considerations because of the role played by these components in the transmission processes (e.g., optical fiber, continuous wave laser diode (CW) and multiplexer (MUX)). Two types of amplifiers (Raman Amplifiers and Erbium Doped Fiber Amplifiers) are studied that are used to amplify the optical signals. Ultra wideband WDM system is proposed in this book. The total 3-dB spectral range obtained is equal to 83-nm as compared with 75-nm that is obtained today. An improved gain-flatness (7 dB as compared with the same value that is obtained today but with short distance) of a Raman amplifier with wide gain-bandwidth and a high gain-output power is obtained by using multipump configuration. 96 channels are simulated with channel spacing equal to 100 GHz (0.8 nm) distance more than 700 km and with more than distance between amplifiers 71.75 km (as compared with 50 km that is used today). ····· 10361101634
für 79.00€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray The central problem addressed is how when an emulsion is used as a lubricant, an oil droplet may be brought to steel substrate to provide microhydrodynamic lubrication. This happens by disjoining a thin water film adhered to steel substrate separating oil from substrate. Quantum mechanical and thermodynamic insights are considered to build a model. The model may be manipulated by selection surfactants and substrates of different chemical potentials to create situations, which enable the disjoining of water film. Different types of forces using atomic force microscopy and physic-chemical methods to validate the model and come to the conclusion, that for a given chemical potential only when the droplet size is controlled by surfactant chemistry and concentration to remain below a critical size it is possible to create a strongly attractive regime between the oil and the steel to bring about the disjoining process. The author demonstrates experimentally for a range of substrates, surfactants and their concentrations in the media, that there is a combination, as suggested by his theoretical model, for which the coefficient friction, in steel on steel sliding experiment, is optimum. ····· 10361101608
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray This book is meant for readers who are interested in studying the simple method of doing sensor fusion. It introduces the use of GPS, a camera and a magnetic compass in order to obtain the correction factor which will be used to draw the correct map for user of Google Earth software. With this method, the errors of Google Earth map can be computed for both translation and orientation errors. Alpha-cut methodology is a key for fusing all data from all sensors. Equations are presented in step by step that reader can easily apply to C++ or MATLAB programming software. ····· 10361101591
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray A water resources system was a set of structural and nonstructural measures and activities for purpose of developing or improving existing water resources for the benefit of human use The main objective of water resources planning and management is to solve the equation of demand and supply of water resource for a specific area taking into account various dimensions like space, time, economy, politics, environment, and other aspects. Also, water management means the reconciliation of all users, preservation of water and related land resources, and previous of enough water for constantly expanding needs. Indonesia was agricultural country, so that the important aspect of water resources developments used for irrigation. Some rivers on Indonesia were progressive developed latterly. Restriction of surface water resources, mainly in dry season intensify the need for an optimum capacity and operation for multi purposes reservoir systems. Thus, it was needed to allocate the water use as efficient as possible. To reach this target, it was needed to make a system model for optimization. Optimization analysis would give more information for allocating water of each objective function. ····· 10361101582
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Crash Prediction Models (CPMs) have been used in the developed countries as a useful tool by road Engineers and Planners. There is however a limited literature on the prediction of road traffic crashes in Low and Middle Income Countries (LMICs) including Ghana. This book studies crash data and develops a prediction model for injury road traffic crashes occurring on rural highways in the Ashanti Region of Ghana. Data was collected from rural highway sections of varying lengths. Data collected for each segment comprised injury crash data, traffic flow and speed data, and roadway characteristics and road geometry data. The Generalised Linear Model (GLM) with Negative Binomial (NB) error structure was used to estimate the model parameters. Crash rates were initially related to each explanatory variable in turn to ascertain if any relationships existed. Two types of models, the core` model which included key exposure variables only and the full` model which included a wider range of variables were developed and interpretations given. Road and Traffic Engineers and Planners can apply the crash prediction model as a tool in safety improvement works and in the design of safer roads. ····· 10361101516
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Earthquake engineers particularly in seismology and geotechnical engineering use a lot of empirical formulas to solve various earthquake engineering problems. These empirical formulas have lot of uncertainty. So, the available empirical formulas are not so reliable. This uncertainly can be minimized by using these new AI techniques. Therefore earthquake engineers should familiar with these new AI techniques. They can use the proposed book to know the application of these new AI techniques for different earthquake engineering problems. The application of these new AI techniques is very limited in earthquake engineering. These new techniques have been proved better than ANN in other engineering fields. So, it is necessary to investigate the feasibility of these new AI techniques in earthquake engineering. ····· 10361101509
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray This book analyzes the concept of using oil tankers` free cargo space and/or segregated ballast tanks to transport freshwater on the return leg, i.e. from oil unloading port back to oil loading port also called freshwater backhauling (FWBH). The hypothesis considered is that by shipping freshwater this way to arid, oil exporting regions one can achieve a low cost and low GHG emission water supply system.The book analyzes the concept in a holistic manner,considering technical issues, transport and infrastructure costs,environmental impacts and contractual and legal issues.Costs are estimated both on a general and scenario specific level. It is found that freshwater could be shipped by way of backhauling by oil tankers to Saudi Arabia from Japan at a cost of between 0.83 and 1.16 USD/ton, including all infrastructure except distribution systems and excluding modifications to the tankers themselves.This cost level makes FWBH to a certain degree competitive with the chief water supply technology in the Middle East, desalination.It is clear,that in many cases FWBH is the superior option compared to desalination, especially when including environmental aspects. ····· 10361101496
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Saving the financial resources of the country has been always at the center of concerns for authorities. Besides, achieving more independency in car production industry or decreasing the unemployment rate is of high importance. The internal crankshaft production project, as a result has been introduced toward these goals. Before making any investment decision, some assessment or studies should be done in order to guarantee the profitability and return on investment. Or, even, some technical issues could be a big problem in future if they were ignored in the past. On the other hand, the existence of the demand for the product on the market should be proved in advance. Accordingly, by utilizing a complete feasibility study the decision makers will be capable of covering all the correlated concerns about this investment. ····· 10361101494
für 61.20€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray This work begins with an in depth cover of the current literature surrounding modelling techniques used to simulate the melt spinning procedure. A one dimensional single filament model developed by previous workers is used to construct a multifilament model which enables a conservative estimate to be made on the effects of heat transfer limitations on the quality of PET yarn. Properties modelled include crystallinity, viscosity, temperature, velocity, fibre diameter and force. Variables investigated include quench air temperature and velocity, polymer extrusion rate and temperature as well as fibre take-up speed. Results showed quench air flow rate to have the largest influence on final property uniformity. Low polymer extrusion rates resulted in a lower degree of non-uniformity in final fibre properties. The model developed showed non-uniform quench air thermal gradients to have adverse effects on the quality of as-spun yarn. ····· 10361101492
für 71.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray The two most important trends in electronic industry are miniaturisation and increased functionality . As these trends are set to continue, there is an increasing demand for better understanding of soldering technology, particularly in the area of solder pastes used in the reflow soldering of surface mount devices. This means that the paste flow and deformation behaviour is very important in defining the printing performance of any solder paste. The work reported in this book is focused on experimetal investigation and empirical modelling of time-dependent rheological behaviours of solder paste and flux mediums. The printing trials of four different lead-free solder paste samples were also carried out to investigate the effect of post-print rest period on slumping behaviour of solder paste. The paste manufacturers and formulators can use the techniques developed to predict and quantify the slumping behaviour of solder paste.The end-users, for example the electronics assemblers may use the techniques to optimize their assembly process by minimising/preventing slumping of solder paste. ····· 10361101464
für 53.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Optimization of large scaled structures under effect of dynamic loads is a difficult task because of very time consuming analysis as a result of high dimension calculation data in every cycle of optimization process. In this book, the Genetic Algorithm method has been used for optimization of a Jacket platform. Dynamic nature of forces that effect on the Jacket platform results in a time consuming analysis and so, a lengthy optimization process. In such cases, approximate analysis is a good solution. Therefore, the wave-net method has been used for approximate analysis. Wave-net method has been modified by combining the Back-Propagation neural network and wavelet theory. Wave-nets have been trained by several training sets. Then, the trained network will be used many times in optimization process. All of the required programs for design optimization process have been prepared in MATLAB software environment. For exact analysis and generating the training sets the ANSYS software has been used. At the end, the capability of the method has been indicated by a numerical example. ····· 10361101457
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray The structure of Schottky-barrier (SB) MOSFETs was investigated for both the perspective of practical applications and interest in novel Flash memory. We demonstrated how the source-side injection of hot electrons in the dopant-segregated SB (DSSB) Flash memory cell achieves high-speed, low-voltage programming with excellent injection efficiency, and no constraints on the optimization of gate and drain voltages. Moreover, the drain disturbance-free phenomenon in NOR Flash architecture was achieved. Excellent programming efficiency, especially, was achieved in a DSSB Flash device with a narrow fin width due to an enhanced lateral electric field without any sacrifice of parasitic resistance. Thus, the DSSB device can be a promising candidate in NOR Flash memory for attaining a lower programming voltage and power consumption. ····· 10361101442
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Shear and compression wave velocities have been demonstrated to be quite useful for determining basic engineering properties of the soil mass by earlier researchers. To achieve this, resonant column, cyclic triaxial and tortional shear tests have been employed. However, these methods are not only quite elaborate and expensive but require skilled manpower, are cumbersome and time consuming. This calls for development of an alternate methodology that can be employed for characterizing the soil mass, which is not very intricate and is cost-effective. In this situation, usage of piezoceramic elements seems to be a good option. With this in view, an attempt has been made to develop a simple and cost-effective methodology for measuring these parameters in different types of soils, compacted to different compaction states. The suitability of the methodology has been demonstrated for characterization of the soil mass for engineering purpose. ····· 10361101427
für 71.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Current work is extracted from doctoral thesis submitted to the Tribhuvan University, Institute of Engineering, Department of Civil Engineering, Pulchowk Campus, which is primarily focused on the modeling of brick infill wall with and without openings in reinforced concrete infill frame, as the application of such frames are very common in practice. In the analytical practices, it is quite obvious that the models of infill walls are frequently ignored resulting the deviation in structural responses. In the current work, author has presented numerous possible simulation models for brick infill frames using both macro and micro models along with idealized models for stress-strain curves of materials like brick units, mortar, masonry wallets and concrete specimens. Obviously it can help people in the study of infill frame for studies on progressive failure mechanisms, nonlinear analysis, pushover analysis,performance based analyses and so on. ····· 10361101348
für 71.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray The advancement in multimedia-based applications has sustained the need for more efficient ways to encode signals and images. Over the years, the Discrete Cosine Transform (DCT) has emerged as the most popular transform for many image and video coding applications. While implementing the DCT using finite-precision, approximation of the real-valued transform coefficients is required. It not only results in computational error, but also limits the quality of the reconstruction. An error-free encoding using algebraic integers has been shown to be an effective way of resolving the issue. The mapping technique referred as Algebraic Integer Quantization (AIQ) encodes the irrational basis functions using algebraic integers. This research presents novel AIQ-based architectures for the fast implementation of several 8x8 2-D scaled DCT and Inverse scaled DCTs. A new Integer-like 8x8 2-D DCT for H.264 encoder is also presented. Apart from the multiplication-free nature, the presented scheme eliminates any quantization errors during the transform stage resulting in area-efficient and high-speed designs suitable for real-time image or video compression and HDTV applications. ····· 10361101336
für 71.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray This book presents the most recent research advances in the theory, design, and application of robotics and mechanisms. The topics cover Lie group theory based, screw theory based, and set theory based methods in type synthesis, kinematic and static analysis, and design of robotic mechanisms, especially parallel mechanisms. Innovative designs of parallel mechanism are obtained for pick and place applications, nano-manipulation, and surgical robots. The results should interest researchers, teachers, and students, in fields of engineering and mathematics related to robot theory, design, and application. ····· 10361101321
für 53.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray This book describes detailed study on ultrashort pulse generation from micron-scale diode laser devices. Both edge-emitting lasers and surface-emitting lasers are investigated. The generated laser pulses have variable spectral linewidth, wide wavelength tuning range, tailorable pulse shape, as well as high peak power and average power. The methods used for high power ultrashort pulse generation include gain-switching, Q- switching, and mode-locking. Pulse quality is controlled by using spectral techniques, e.g. external cavity feedback & filtering, injection seeding, and fibre Bragg grating filtering. ····· 10361101286
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray This report contains information about the development of the PC Game Blind Samurai , developed by Chris Blanco and Neil Diaz. Blind Samurai was a game designed beyond the normal/fighting titles played today. Rather than giving players control of a generic beat-em-up hero, the player must tactically guide his blind warrior through the paths of his enemies to rescue his love interest, overcoming his loss of eyesight with the power of sound. This report first summarizes the game and references used in its creation. It will then go into detail about the game`s design plan and the technical planning used. Societal impacts will be discussed, and finally a conclusion, which will sum up the authors` feelings about how this project progressed. ····· 10361101253
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Coloured conducting textiles have shown a wide range of potential applications in heating fabrics, electromagnetic wave absorption, and wearable optoelectronic devices. This research aimed at clarifying some issues occurred in the research project on coloured conductive textiles. The investigation firstly clarified a possible chemical reaction that took place between a commercial dispersing dye (Terasil Red G) and the conducting polymer polypyrrole, through chemical separation, structural identification and spectrum characterisations. Then, a series of acidic dyes were introduced into polypyrrole matrix during the vapour coating of conducting polymer on the wool fabrics. Colour and thermal stability studies were conducted. Finally, the polypyrrole nanoparticles (particle size several~200nm) were prepared by a microemulsion polymerisation technique. An acid dye was used as the dopant to re-dope the nanoparticles. The effect of the acidic dye on the optical absorption of nanoparticles was studied. Applying the conducting nanoparticles on wool fabrics may open an alternative path to achieve the coloured conducting textiles. ····· 10361101222
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Many research and development works have been carried out in the area of high speed turning. Cermet tools have been employed for high speed machining for a long time due to their high wear resistance and high hot hardness. In the current work, research is focused on the analysis of wear behavior of cermets applying negative rake angles during high speed machining. In addition to that, cutting temperature is also integrated in this research due to its significant roles in high speed machining. Those facts and evidences have formed the rationale of this research. Hence, the aim of this research is to investigate performance of cermet tools applying negative rake angles during high speed machining. ····· 10361101189
für 61.20€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Real-time motion-planning in autonomous vehicle navigation applications has typically referred to the on-line trajectory-planning problem to reach a designated location in minimal time. In this context, past research achievements have been subjected to three main limitations: (i) only the problem of interception (position matching) has been considered, whereas the problem of rendezvous (velocity matching) has not been rigorously investigated (ii) obstacles have been commonly treated as moving with constant velocity as opposed to being highly maneuverable and following a priori unknown trajectories and, (iii) mostly, structured indoor terrains have been considered. This book addresses the above drawbacks by proposing the use of guidance-based methods that can be used by an autonomous vehicle to accurately and safely maneuver in the presence of dynamic obstacles on realistic terrains. The objective is time-optimal rendezvous with static or dynamic targets. The proposed methods minimizes rendezvous time and energy consumption, by directly considering the dynamics of the obstacles and the target, while accurately determining a feasible way to travel through an uneven terrain. ····· 10361101171
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Thermal analysis is a useful technique for the study of solid phase transformations and has been widely applied to study precipitation in aluminium alloys, but the results are generally interpreted qualitatively. Quantitative interpretation of Differential Scanning Calorimetry(DSC) experiments on ternary aluminium-based alloys has been attempted, and can improve understanding of their thermodynamics and kinetics of precipitation. Three separate, distinctly kinetic models were used in the studying of the precipitation reactions. The analysis should help shed some light on solid state reactions in aluminium alloy, and should be especially useful to professionals in Engineering and Science fields, or anyone else who may be considering usage of aluminium alloys ····· 10361101136
für 71.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Many older structures were designed for static loads but more recently there has been a growing awareness that some must be designed to resist both dynamic impact and static loads. An accidental impact load can be caused by mishaps in industry as well as accidents stemming from transportation or man-made disasters. Structural components can be subjected to a range of deliberate impact loads such as military activity or terrorist attacks. A large proportion of the surfaces of concrete structures are covered by reinforced concrete slabs. Slabs are often slender elements, which means they are vulnerable to flexural, shear, or a combination of both modes of failure when subjected to impact loading. There are a number of ways of predicting how an impact load will affect a concrete slab, some of which may be impractical or expensive but because there have been significant developments in technology, numerical techniques rather than experimental approaches have become popular methods for developing detailed responses. ····· 10361101121
····· lezzter Preis 44.10€ ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray This work presents new approaches for motion design and analysis suitable for the integration of Computer Aided Design (CAD), Computer Aided Manufacturing (CAM) and Computerized Numerical Control (CNC). Therefore, not only shape but also kinematic information is conveyed in an efficient manner that can be easily implemented in CAD/CAM systems and eventually interpreted by CNC manufacturing equipment. By using dual quaternions, quaternions and planar quaternions, the displacements of a rigid body in Cartesian space are mapped into points in the image space of displacements, transforming the kinematic problem of motion interpolation into a geometric problem where the powerful techniques for curve and surface interpolation from Computer Aided Geometric Design (CAGD) can be readily applied. Three techniques are developed using quaternion biarcs, a four point interpolatory subdivision scheme and its tensor product version. A preliminary approach for mechanism simulation using subdivision schemes is also attempted. The results obtained have applications in CNC tool path generation, robot path planning, and computer animation. ····· 10361101120· 1 · ::::: · 38 ·· 39 ·· 40 ·· 41 ·· 42 ·· 43 ·· 44 · ::::: · 83 ·
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