für 61.20€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray The Cameroonian grid suffers from transient and permanent overvoltages, voltage dips, harmonics and phase disequilibrium. These problems are faced by many other grids in the world. This led to the invention of the UPS (Uninterruptible Power Supply). As its name indicates, the UPS carries out Power Processing on the power signals such that a clean and stable power of high quality is delivered at its output. Unfortunately, most commercial UPS and inverters, especially for off-grid applications, do not have high power ratings. Solar PV off-grid stations have a problem of finding high-power off-grid inverters. This work is aimed at providing a step towards solving this problem. This book is recommended for those interested in the domain of switch mode power supplies. In particular, the reader shall find in-depth analysis of the buck, boost, and h-bridge converters with integrated microcontroller. ····· 1036189223
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray A new approach of control design of internal model controller is proposed in this book. The proposed design method focuses on modifying the old general structure of IMC and develops a new model structure while saving the same general concept of using the invertible version of the system in the controller design. The new approach combines the IMC structure and the traditional structure of a control problem and this demonstrates an excellent performance and behavior against different disturbance inputs and model uncertainty presented in model parameter mismatch. Beside that a smith predictor is added to promote the design to compensate the delayed time systems. Also a proposed stabilizer has mentioned to deal with unstable systems. The IMC design with delay should help shed some light on this new and exciting method and should be especially useful to professionals in control This book is designed for the professional and academic audience interested primarily in applications of IMC in control engineering and technology. ····· 1036189157
für 71.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray This Thesis is focused in the work developed by the author in the frame of the MAGIC collaboration, mainly in high frequency electronics for MAGIC I and II Cherenkov Telescopes. The main achievements during this PhD period have been the following: Design of low noise, low jitter pulse generators for te test of the analog transmission of the telescopes. Based in previous designs, modelling and construction of a prototype of pulsed light emmiter based on high speed LEDs. This prototype generates signals similar to the ones received by the telescope, with the purpose of testing the camera pixels. Desing, production and test of broadband (up to 1 GHz) low noise and high dynamic range amplifiers. Setup of a testbench for time response and single photoelectron counting of various state of the art photodetectors. ····· 1036189133
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray The modern world is dependent on digital communications. Until relatively recently, radio, television and telephone systems were essentially analogue in nature. The majority of communications, however, still originate in the physical world as sound and images, mainly voice (as in telephone communications), and such signals must be converted to some digital form before they enter the communications links. These communications may be by copper wire, by ber-optic cable, or by modulated radio waves using either terrestrial or satellite broadcasting. This book will, by necessity, touch on a number of different areas of study, and as such is more than just a text for aspiring Electrical Engineers. The course on which this book is based is a proven method for introducing the student to the subject of communication systems. It integrates and applies the basic concepts found in the student`s other courses and permits the inclusion of material important to the practice of electrical engineering not usually found in the traditional curriculum. This book is intended as an introductory digital communication book for students in computer science and Electrical engineering. ····· 1036189065
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray There are many condition monitoring methods such as vibration monitoring, thermal monitoring, chemical monitoring and acoustic emission monitoring. But all of these monitoring methods require expensive sensors and specialized tools. However, the condition monitoring method and fault diagnosis based on motor current signature are a better option since they do not require additional sensors. In this research, a novel criterion function of wavelet processing signal is introduced to diagnose the broken rotor bars in three-phase squirrel cage induction motors. This criterion function facilitates the precise diagnosis of the faults in induction motors under load variations. It uses wavelet transforms available in LabView software to process the stator current signals in the faulty induction motors to extract the wavelet coefficients in a specific time-frequency bands. Furthermore, spectrum analysis of the stator currents around the fundamental frequency is used to diagnose the faults. It is shown that the amplitudes of the frequency harmonics components fb=fs(1±2s) are influenced by the number of broken rotor bars, the exact location of broken rotor bars and the motor loading condition. ····· 1036189059
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray The design of dual-band microstrip patch antenna based on E-shaped patch for WiMAX (Wireless Interoperability for Microwave Access) application is presented. The proposed antenna is simulated by Electromagnetic simulator, XFDTD (Finite Difference Time Domain Method). The simulation result shows the antenna system resonates at 1.54GHz and 1.97GHz frequencies. These dual band frequencies are suitable for WiMAX applications. The parameters are calculated for outer dimensions of the E-shaped microstrip patch antenna on the basis of line width to substrate thickness (W/h) ratio by considering loss less dielectric material (FR-4 Duroid material). The characteristic line impedance and effective dielectric constant are calculated by considering different values of W/h ratio like 2, 3 and 4. The comparative statement among characteristic line impedance and effective dielectric constant with W/h ratio are presented. This project work also presents how to choose the dimensions of the patch for design a microstrip patch antenna at specific frequency band by a certain dielectric material. The proposed antenna has a centre frequency 2GHz. ····· 1036189041
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray The objective of this thesis is to design an All Digital Phase Locked Loop (ADPLL) to align the higher frequency signal at the output of the PLL with its input. This work presents a low power All Digital Phase Locked Loop (ADPLL) for the video applications. The ADPLL has wide range of operating input frequency from 10 kHz to 150 kHz. The output range of ADPLL is from 10 MHz to 300 MHz can be used for a variety of applications. The circuit of ADPLL is designed in a CMOS 65 nm technology using a supply voltage of 1 V. This project is designed using Cadence and MATLAB. ····· 1036189009
für 61.20€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray This thesis addresses one of the fundamental challenges emerging in microprocessor design, namely hardware reliability and resilience. Since inception in the 70`s, microprocessors have primarily benefited from technological advancements in semiconductors fabrication allowing for an exponential increase in computing capability of chips by shrinking transistors sizes. Unfortunately, forecasts indicate that further shrinking in size will be accompanied by variability in transistor performance and reliability. This thesis proposes novel designs and enhancements to provide hardware reliability for parallel workloads. In particular, it is provided noteworthy improvements in Redundant Multi Threading (RMT) fault-tolerant approaches, as well as novel Expected Miss Ratio (EMR) model to determine the impact of hard faults on cache memories. ····· 1036188999
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Amorphous Oxide semiconductors have gained large interest in the display industry, owing to their high carrier mobility and low fabrication costs. In this thesis, n-channel solution based zinc-tin oxide (ZTO) thin-film transistors (TFTs) are studied from a circuit design perspective. The study includes an iterative process of circuit design, layouts and lab tests performed on the fabricated circuits. The requirement and initial development of a physical compact model for performing accurate and predictive circuit simulations has been presented. The use of ZTO devices in low cost, transparent and flexible electronic applications has been investigated through the study of basic circuit blocks such as amplifiers, ring oscillators, inverters and a four stage Operational Amplifier. ····· 1036188918
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray With the evolution in the telecommunication generations, more and more research is going on in the field of wireless communications. The purpose of these researches has always been to provide good network coverage across the region with higher data rates, accuracy and better performance. Control on coverage and performance has always been in focus and is achieved by using better and better antennas. The research in this thesis is also based upon these main factors. ····· 1036188914
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Broadband voltage-controlled oscillators are critical to the design of millimeter-wave (mm-wave) frequency synthesizers. This thesis proposes a design technique that can be used to significantly extend the achievable frequency span of an oscillator. A dual-band oscillator topology is described that can be configured to operate in one of two modes, by an electrical reconfiguration of the negative resistance core around the resonant tank, without switching passive elements within the tank itself. The configuration helps to minimize the difference in phase noise performance between the two modes, while achieving a wide tuning range. To verify the concept, an mm-wave VCO that operates at 30 GHz is designed in a commercial 0.18-um CMOS technology, with an approximate simulated tuning range of 20%. A dual-mode oscillator is also designed in 0.13-um CMOS technology at 60 GHz. ····· 1036188890
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray The clocking schemes and signal waveforms of Adiabatic Circuits are different from those of Standard CMOS circuits. The Adiabatic Logic and Standard CMOS circuits do exist on a single chip to utilize the strength of both approaches. The interface circuits that convert signals between Adiabatic Logic and Standard CMOS circuits are inherent requirement. The text investigates design approaches of Adiabatic- CMOS and CMOS- Adiabatic interface circuits. Several new low power Adiabatic-CMOS and CMOS-Adiabatic interfaces are introduced in this text. Tanner EDA tool on BSIM3V3 90nm and 130nm CMOS technologies has been used to calculate the power consumption and power delay product of various circuits over temperature, frequencies and power supply voltages. The comparison of proposed approaches has been done with the all other approaches available in the literature on various circuit parameters. The write up concludes the efficient design approaches for interface circuits in terms of power consumption and power delay product. ····· 1036188863
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray This book discusses the timing and signal integrity issues with VLSI interconnects in sub-nanometer designs. Starting with the basics of interconnect equivalent circuit model it describes the RLC equivalent models of interconnects, their extraction methodologies, and circuit simulation for timing and signal integrity analysis. With enormous analysis results for different technology nodes the importance of on-chip inductive effects has been discussed. The sample simulation model along with the SPICE netlist for timing and signal integrity analysis has been provided in the appendix. The book will be useful to the teachers, students, and researchers who are involved in modeling and analyzing the interconnects in future generation VLSI technology nodes. The book comprises four chapters and one appendix. ····· 1036188849
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Current research and development on electrochemical power sources are mainly focussed on fuel cells, batteries and electrochemical capacitors and are directed towards obtaining high specific energy, high specific power, long cycle life at relatively low cost. Supercapacitors, ultracapacitors, or electrochemical double layer capacitors (EDLCs) differs from a regular capacitor by the property that it has a very high capacitance in the order of Farads. The supercapacitor is ideal for energy storage which undergoes frequent charge-discharge cycles at high current and short durations. Due to their high specific power, supercapacitors have applications including automobiles, electric vehicles and various hybrid electric vehicles.This Thesis describes the low cost fabrication of supercapacitors based on activated carbon coated lead electrode and its characterization by various electrochemical techniques such as cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS) and constant current charge-discharge test (chronopotentiometry). ····· 1036188845
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray We present a framework for audio-visual analysis of dance performances towards the goal of music-driven dance synthesis. Dance gures, which are performed synchronously with the musical rhythm, can be analyzed through the audio spectra using spectral and chromatic musical features. In the proposed multimodal dance performance analysis system, dance gures are manually labeled over the video stream and modeled by employing HMMs. The music segments, which correspond to beat and meter boundaries, are used to train hidden Markov model (HMM) structures to learn meter related temporal audio patterns which are correlated with the dance gures. Bi-gram based co-occurences of temporal audio patterns and dance gures are calculated. and bi-gram based co-occurrence performances for two di erent audio feature streams are evaluated. In our evaluations, mel-scale cepstral coe cients (MFCC) with their rst and second derivatives and chroma features are used as our candidate audio feature set. The proposed framework in this thesis, can be used towards analysis and synthesis of audio-driven human body animation. ····· 1036188684
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray The Advanced Telecommunication Computing Architecture (ATCA) specification describes one of the most recent open architectures dedicated to delivering high performance computations equipment. It ensures high level of reliability and system availability (up to 99.999%). It also supports high speed communication protocols such as PCI-Express (PCIe) or Gigabit Ethernet (GbE). Furthermore, it offers modularity allowing for flexible system configuration and facilitating its maintenance and service. The book presents the results of work on the development of firmware for Intelligent Platform Management Controller (IPMC) for an ATCA Carrier Board. The innovative character of the described solution emerges from the application of microcontroller dedicated for communication applications to the role of the IPMC. The firmware presented in the book is a suitable basis for development of further IPMC functionalities and it can be easily adapted for diverse types of the ATCA Carrier Boards. ····· 1036188666
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray The current designs of color video projectors suffer from color errors commonly referred to as rainbow artifact. This book contains a new projector hardware and processing technique that reduces the artifacts significantly. Our contributions are in three parts. We first propose the notion of rendering error, or an error in the projected image perceived by the human visual system. We then propose spatial-temporal color wheel design incorporated the requirements for the zero rendering error condition and amplitude demodulation. The output was satisfactory, although it required a modfied color wheel. Finally, we propose preprocessing scheme that reduce rendering error by introducing a correction term to cancel the predicted rendering error. ····· 1036188584
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Mobile communication is an integrated part of our daily lives. It surrounds us, and provides a ubiquitous communication channel even for the most demanding multimedia services. The focus of mobile communication shifts from voice to mobile broadband data services. Mobile operators are introducing novel techniques, such as High Speed Packet Data (HSXPA) and UMTS LTE (Long Term Evolution), to serve more traffic on the radio interface. Radio cells are also getting smaller, so mobile operators can achieve higher level of spatial reuse of the radio channels, too. Besides transmission speed, the quality of the connection is also a very important aspect, which might turn the balance in the competition among operators. The topic of my dissertation is finding the right balance between the quantity and the quality in mobile networks, by focusing on three main aspects: 1.) Tracking mobile user movements in cellular mobile wireless networks, 2.) A Ring based Call Admission Control algorithm and Ring Based Mobility management algorithm, 3.) The performance evaluation of Anycast Based Micro-mobility Management ····· 1036188553
····· lezzter Preis 44.10€ ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray The studies in this thesis focuses on learning basics of conventional Communication and Protection protocol (MODBUS and IE-103) and the latest IEC 61850 Standard used in Substation Automation. It explains the basics information of IEC 61850 and its implementation for substation automation systems. Further in the thesis detail analysis of horizontal GOOSE communication between IEDs in bay level and its applications is focused. Horizontal communication has conventionally been solved by hardwiring required information between devices. GOOSE communication enables the transmission of these signals via Ethernet network, therefore creating a system that is more easily expandable and reducing the need of hardwiring. The purpose of this work is to provide information concerning IEC 61850 and GOOSE. The substance of IEC 61850 and horizontal communication are presented in the theory chapters. The applications of GOOSE were examined in order to get more practical results. Each application is first described in general, followed by an example solution. ····· 1036188452
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray The fused multiply add (FMA) operation is very important in many scientific and engineering applications. It is a key feature of the floating-point unit (FPU), which greatly increases the floating-point performance and accuracy.Many approaches are developed on floating-point fused multiply add unit to decrease its latency.two of these approaches are implemented in the Verilog hardware description language. ModelSim10.0c is a used to compile Verilog codes and to simulate them. ····· 1036188443
für 53.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray The cellular communication evolution has been very rapid in the past decade, the current mobile communication system family can be categorized into different generations Analog based first generation (1G), circuit switched second generation (2G), packet switched third generation (3G) and lately Internet Protocol (IP) based fourth generation (4G). However, with the technology developments, each proceeding generation provides better quality, capacity and bandwidth efficient thus allowing wide range of services to be offered. ····· 1036188433
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Sensors are central to engineering applications which are used for process control, monitoring, and safety. Sensors are also important in medicine for diagnostics, monitoring, critical care, and public health. This work is dedicated to the modeling of proposed devices and their applications in engineering systems. This dissertation is divided into four chapters the first one is reserved to the Sensors and their applications in engineering. In the second chapter, novel designs to deep submicron FET-based chemical sensors are presented. The followed chapter, a new radiation sensitive FET (RADFET) dosimeter design (called the Dual-Dielectric Gate All around DDGAA RADFET dosimeter) to improve the radiation sensitivity performance and its analytical analysis have been proposed. Finally, in the last chapter, Improvement and Implementation of the (DDGAA) RADFET sensor in radioactive environment are presented using genetic Algorithms and artificial neural networks. We hope that this work has succeeded in reaching the fixed goals and satisfying too. ····· 1036188428
für 71.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray The development of a novel micro-bridge actuator for optical switching applications is presented in this book. It covers the design, simulation, micro-fabrication, and testing of the actuator including its integration with a vertical micro-mirror. Detail studies on the buckled shape multi-layered micro-bridge actuator, its bi-stability and two-way actuation, and thermo-mechanical behaviour have been carried out during the design phase. The studies lead to formulations of a new bi-stability design methodology, buckled shape and thermo-mechanical models. Finite element analysis using ANSYS and micro-fabricated structures are used to validate the methodology and models. Micro-fabrication techniques have been developed to form the actuator, and incorporate a vertical micro-mirror with the actuator to realize a monolithically integrated optical cross-switch. The fabricated device is packaged and actuated electro-thermally to characterise its mechanical and optical switching performances. The novelty of the actuator lies in enabling intial out-of-plane deflection, which facilitates future integration of planar silica waveguides with the switch on the same substrate relatively easily. ····· 1036188337
für 71.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray The old ink and paper method of a biometric system is at risk to a variety of attacks. These attacks are intended to either avoid the security afforded by the system or to put off the normal functioning of the system. The old ink and paper method which is grossly susceptible to wear and tear makes it very vulnerable. Proper use of cryptography hash functions greatly reduces the risks in automated biometric systems as hackers have to find both secret key and template. It is evidenced that still fraud goes on to some extent. Here in this paper a new idea is presented to make system more secure by use of encryption and its HMAC code. Here the secret key (which is in the form of pixel intensities) will be merged in the picture itself while encoding and its unique corresponding HMAC code generated, and at decoding end only the authentic user will be allowed to decode and digitally encrypted hashed image is stored in the database for future references and usages. ····· 1036188330· 1 · ::::: · 30 ·· 31 ·· 32 ·· 33 ·· 34 ·· 35 ·· 36 · ::::: · 46 ·
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