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Using A Micro-Integrator To Eliminate The Numerical Butterfly Effect In Non-Linear Chaotic Partial Differential Equations, Joshua Jemegbe
Using A Micro-Integrator To Eliminate The Numerical Butterfly Effect In Non-Linear Chaotic Partial Differential Equations, Joshua Jemegbe
Electrical Engineering Theses
Chaos theory is a relatively new scientific paradigm for the analysis, simulation and prediction of non-linear phenomena whose initial conditions determine the behavior of their entire time series representation. It finds many applications in mathematics, science, and engineering. These include, but are not limited, to data encryption and decryption, designing secure communication systems, predicting weather patterns, noise fluctuations on data lines, understanding turbulence in fluid flow, and analyzing quantum wells. Systems that exhibit chaos are called chaotic systems. In computing solutions to nonlinear chaotic partial differential equation sets, slight deviations in step size could lead to completely diverging trajectories as …
Compressive Sensing For Speech Signals In Mobile Systems, Sabir Ahmed
Compressive Sensing For Speech Signals In Mobile Systems, Sabir Ahmed
Electrical Engineering Theses
Compressive sensing is an emerging and revolutionary technology that strongly relies on the sparsity of the signal. In compressive sensing the signal is sparsely compressively sampled by taking a small number of random projections of the signal, which contain most of the salient information. Compressive sensing has been previously applied in areas like: image processing, radar systems and sonar systems. This research work will discuss the potential implementation of compressive sensing in mobile communication systems and how it will influence their data rates. In a typical mobile communication system, the signal of interest is sampled at least at the Nyquist …
An Evaluation Of Cmos Adders For Robustness And Fault Detectability In Nanoscale Technologies, Sowjanya Puttagunta
An Evaluation Of Cmos Adders For Robustness And Fault Detectability In Nanoscale Technologies, Sowjanya Puttagunta
Electrical Engineering Theses
The objective of this thesis is to implement the two low transistor count full adders using submicron CMOS technologies and to study their performance with respect to process variations and single-transistor faults. One adder uses 10 transistors and the other uses 14 transistors. Hence they are respectively called the 10T and 14T adders. Previous work has studied the implementation of the static Complementary Metal Oxide Semiconductor (CMOS) adder, Complementary Pass Transistor Logic (CPL) adder, Transmission Gate adder (TGA) and the Hybrid CMOS (HCMOS) adder. The performance of the 10T and 14 T adders using the above mentioned metrics are compared …
Applications With A Radiation Pattern In The Horizontal Direction, Sudarshan Reddy Tippi Reddy
Applications With A Radiation Pattern In The Horizontal Direction, Sudarshan Reddy Tippi Reddy
Electrical Engineering Theses
Antennas play a vital role in communication systems by radiating and receiving signals of interest. There are various structural types of antennas differentiated by their individual properties such as: the directivity, the power transmitted and the gain. One of these types of antennas with special properties is the microstrip antenna. There are multiple applications for microstrip antennas in wireless communication, due to its small form factor and geometrical shape. A design for a microstrip antenna in which the radiation is spread along the horizontal axis is proposed. Several antenna configurations were considered for the design, and their radiation patterns were …
Design Of A Uniform Circular Phased-Array Smart Antenna For 2.4 Ghz Applications, Hemasri Kollipara
Design Of A Uniform Circular Phased-Array Smart Antenna For 2.4 Ghz Applications, Hemasri Kollipara
Electrical Engineering Theses
An antenna is a transitional structure between free-space and a guiding device. Different types of antennas have different properties in terms of its radiation characteristics, directivity and gain. One of the antennas, which play an important role in advanced wireless communication systems, is the smart antenna. One of the most remarkable properties of a smart antenna is that it is capable of directing its main beam towards the direction of the individual user and the nulls in the direction of interfering signals. There are different configurations for smart antennas. One of these configurations is the Uniform Circular Array Antenna (UCA). …
A Study Of Multiprocessor Systems Using The Picoblaze 8-Bit Microcontroller Implemented On Field Programmable Gate Arrays, Venkata Mandala
A Study Of Multiprocessor Systems Using The Picoblaze 8-Bit Microcontroller Implemented On Field Programmable Gate Arrays, Venkata Mandala
Electrical Engineering Theses
As Field Programmable Gate Arrays (FPGAs) are becoming more capable of implementing complex logic circuits, designers are increasingly choosing them over traditional microprocessor-based systems for implementing digital controllers and digital signal processing applications. Indeed, as FPGAs are being built using state-of-the-art deep submicron CMOS processes, the increased amount of logic and memory resources allows such FPGA-based implementations to compete in terms of speed, complexity, and power dissipation with most custom-built chips, but at a fraction of the development costs. The modern FPGA is now capable of implementing multiple instances of configurable processors that are completely specified by a high-level descriptor …
Implementation Of A Full Doppler Compensation To Eliminate The Use Of First Order Approximation To Compensate The Doppler In Large Time-Bandwith Product Radar Images, Pavan Vutukur
Electrical Engineering Theses
The First Order Approximation technique is used in current generation of radars to compensate for the frequency shift due to the target's velocity. A common practice in radar systems to improve their resolution and performance is to increment the Time-Bandwidth (TBW) product of the transmitted signal. As the first order approximation is comprised of only the first two terms of a power series expansion; any significant increase in the TBW product of the signal results in significant errors in the radar image. In this research, the full Doppler compensation methodology was implemented and compared to the common approximation. The Time-Bandwidth …
The Measurement Of Bone Quality In Medical Images Using Statistical Textural Features, Ning Huang
The Measurement Of Bone Quality In Medical Images Using Statistical Textural Features, Ning Huang
Electrical Engineering Theses
Mineral density and bone architecture properties are the main measures of bone quality. Dual-energy X-ray Absorptiometry (DXA) is the traditional clinical measurement technique for bone mineral density, but it is insensitive to architectural information. Image analysis of the architectural properties of bones can be used to predict bone quality. This study is aimed at investigating the statistical parameters extracted from wo dimensional projection images of the DXA scans and exploring its link with architectural properties, and its correlation with a bones mechanical properties. In this research, features extracted from the Gray Level Co-occurrence Matrix (GLCM) for a 2D image are …
A Highly Linear Voltage Controlled Oscillator With Low Power Dissipation, Sourabh Sharma
A Highly Linear Voltage Controlled Oscillator With Low Power Dissipation, Sourabh Sharma
Electrical Engineering Theses
A voltage controlled oscillator using 90 nm CMOS technology has been presented with the extremely low power dissipation of 1.35 mW and provides 1.45 mW (with use of buffers) output AC power. It has highly linear voltage to frequency transformation, with only 4.85% of maximum error this VCO Works in the long range from 5.1 to 9.099 GHz while the controlling voltage varies from 0 to .5 volts, The oscillator is powered by a 1 volt power supply.
Design Of A Novel Electrostatic Micro Energy Harvester, Madhumita Ambokar
Design Of A Novel Electrostatic Micro Energy Harvester, Madhumita Ambokar
Electrical Engineering Theses
The batteries have been a major source of energy for the electronic devices. However, the exhaustible nature of the batteries has encouraged the researchers to exploit the renewable energy sources for powering the electronics. Over the years, the researchers have tried to tap the stray energy provided by the ambient sources such as sun, wind, RF energy, vibration energy, etc. In the work presented here, an effort has been made to design a micro energy harvester, which would harness electric energy from the vibrations provided by the machine such as aircrafts, cars, engines, etc. A variable capacitive device was designed …
Short Circuit Analysis And Circuit Breaker Interrupting Capability Validations For Industrial Power Plants, Vijayanand Appanaicknepatti Ramachandran
Short Circuit Analysis And Circuit Breaker Interrupting Capability Validations For Industrial Power Plants, Vijayanand Appanaicknepatti Ramachandran
Electrical Engineering Theses
The purpose of this study is to determine the short circuit current as well as evaluate the interrupting capability of the circuit breaker with higher accuracy for industrial power plants. Power plant protection and coordination involves prevention of injury to personnel, minimizing damage to the system components, and limiting the extent and duration of service interruption whenever equipment failure, human error, or adverse natural events occur on any portion of the system. The cause for any of these circumstances is very unpredictable, but through sound system design we can reduce the levels of impact. Power plant protection is one of …
Estimation Of Thermal Impedance Parameters Of Silicon Germanium Heterojunction Bipolar Transistors, Arun Thomas Karingada
Estimation Of Thermal Impedance Parameters Of Silicon Germanium Heterojunction Bipolar Transistors, Arun Thomas Karingada
Electrical Engineering Theses
Silicon Germanium (SiGe) hetero junction bipolar transistors (HBTs) are used in a variety of circuits like analog mixed signal and RF(radio frequency ) circuits. As the device gets smaller these days the self heating affects the performance of the SiGe HBTs. This paper uses theoretical methods based on device geometry and material properties to calculate the thermal resistance and thermal capacitance of SiGe HBT. In addition to theoretical estimations time domain, frequency domain and DC measurements are done on National Semiconductor's CBC8 HBTs which is used to extract the values of thermal impedance parameters.
Implementation Of Complexity Reduction Algorithm For Intra Mode Selection In H.264/Avc, Santosh Kumar Muniyappa
Implementation Of Complexity Reduction Algorithm For Intra Mode Selection In H.264/Avc, Santosh Kumar Muniyappa
Electrical Engineering Theses
For applications with low computational capabilities like handheld devices, it is necessary that the encoding complexity is minimal. But H.264, which is the most widely accepted video platform employs several powerful coding techniques that increase encoding complexity. Hence, the objective of this thesis is to implement an algorithm which reduces the encoding complexity by about 25%, but retains the quality of the existing intra prediction algorithm. H.264 offers nine modes for intra prediction of 4x4 luminance blocks, which includes DC prediction and eight directional modes (N4). For regions with less spatial detail, H.264 supports 16x16 intra coding, where in one …
Development Of Prosthetic Skin, Rohit Kilaru
Development Of Prosthetic Skin, Rohit Kilaru
Electrical Engineering Theses
The objective of this research was to embed tactile sensors in polyimides. This novel method could be utilized to realize prosthetic skin for sensing different kinds of mechanical stimuli. Tactile sensors have an increasing demand in medical sectors: upper and lower-limb prosthetics and in the industrial sectors: robot end-effectors, grippers and manipulators. The sensors developed are targeted for prosthetic arm tactile sensing applications. Current work presents piezoresistive differential pressure sensors fabricated on flexible polyimide film or substrate.A unique technique to bond a flexible superstrate polyimide layer to a MEMS tactile sensor array is presented in this thesis. The sensor is …
Real-Time Dynamic Hand Shape Gesture Controller, Rajesh Radhakrishnan
Real-Time Dynamic Hand Shape Gesture Controller, Rajesh Radhakrishnan
Electrical Engineering Theses
The main objective of this thesis is to build a real time gesture recognition system which can spot and recognize specific gestures from continuous stream of input video. We address the recognition of single handed dynamic gestures. We have considered gestures which are sequences of distinct hand poses. Gestures are classified based on their hand poses and its nature of motion. The recognition strategy uses a combination of spatial hand shape recognition using chamfer distance measure and temporal characteristics through dynamic programming. The system is fairly robust to background clutter and uses skin color for tracking. Gestures are an important …
Self-Assembled Synthesis Of Microfluidic Channels In Pdms, Jeyantt Srinivas Sankaran
Self-Assembled Synthesis Of Microfluidic Channels In Pdms, Jeyantt Srinivas Sankaran
Electrical Engineering Theses
The field of microfluidics is expanding rapidly finding applications in diverse areas ranging from solid state devices and semiconductors to bio- applications in cell culture and DNA assays and micro- arrays. PDMS has been a commonly used material for the fabrication of microfluidic devices. Apart from traditional lithographic techniques, soft lithography has also been prevalent in fabrication of micro channels in polymers like PDMS. We propose a novel technique for fabrication of micro/nanochannels in PDMS using hydrophilic- hydrophobic interactions. Several hydrophilic materials have been tried for the fabrication of such channels. This research revolves around the science behind the phenomenon, …
Experimental Study Of Through-Wall Human Being Detection Using Ultra-Wideband Radar, Ashith Kumar
Experimental Study Of Through-Wall Human Being Detection Using Ultra-Wideband Radar, Ashith Kumar
Electrical Engineering Theses
Ultra-wideband radars are used for several applications such as subsurface sensing, classification of aircrafts and collision avoidance. The detection of humans hidden by walls or rubble, trapped in buildings on fire or avalanche victims are of interest for rescue, surveillance and security operations. Ultra-wideband technology is favored for these applications due to its inherent property of ultra-high resolution and the ability to penetrate most of the non-metallic building materials such as bricks, wood, dry walls, concrete and reinforced concrete. Detection of human beings with radars is based on movement detection - respiratory motions and movement of body parts. These motions …
Improvement In The Performance Of 3g Wireless Communications Systems Using An Ica Based Signal Processing Block, Winston Dsouza
Improvement In The Performance Of 3g Wireless Communications Systems Using An Ica Based Signal Processing Block, Winston Dsouza
Electrical Engineering Theses
In this thesis, we have implemented a signal processing block in the receiver of a third generation (3G) cellular system to provide improvement in the quality of service. Each block of the cellular system, including the complete transmitter, channel and the receiver is implemented in Matlab. The multiplexing scheme is implemented using wideband code division multiple access (WCDMA). The signal processing block is based on the concept of independent component analysis (ICA), and a rake receiver is used at the receiver to mitigate inter symbol interference due to the multi-paths. The signal processing block (SPB) is further extended to a …
Control System For Real Time Jitter Reduction And 3d Reconstruction Of Road Profile, Digant Shah
Control System For Real Time Jitter Reduction And 3d Reconstruction Of Road Profile, Digant Shah
Electrical Engineering Theses
A large number of bridges, overpasses and other similar structures fail due to deterioration caused by factors such as vehicle loads, impact loads, severe weather conditions, etc. Routine monitoring of such structures is essential to prevent loss of life and property. This thesis explores the feasibility of a 3D bridge monitoring system as a novel way for bridge health analysis. Specifically, the goal of this study is to investigate the use of a video control system for monitoring and synchronize video and surface profile components for a 3D bridge monitoring project. This thesis focuses on the concept of collecting video …
Needle Detection And Localization In Simulated In-Vivo Ultrasound Image For Use In Breast Biopsy, Nidhi Khullar
Needle Detection And Localization In Simulated In-Vivo Ultrasound Image For Use In Breast Biopsy, Nidhi Khullar
Electrical Engineering Theses
This thesis addresses needle segmentation in ultrasound images for breast cancer biopsy. The thesis reviews the state-of-the-art in object localization using ultrasound (US) imagery. In particular, principal component analysis, projection based methods (Hough Transform, Radon Transform and Parallel Integral Projection) and model fitting method using RANSAC and work in the field of diffusion filters are reviewed for potential use in a real breast biopsy environment, wherein the US imagery does not have much contrast and the speckle noise content is high. Other image artifacts in these images also mask the needle image.A new needle localization method called ANDSUI algorithm has …
Optimal Path Planning, Implementation And Simulation For A Breast Biopsy System, Sridhar Rajaram
Optimal Path Planning, Implementation And Simulation For A Breast Biopsy System, Sridhar Rajaram
Electrical Engineering Theses
Core needle biopsy is a non-invasive method of confirming the presence of cancer cells in the breast. Image guided breast biopsy is a procedure performed to extract suspicious tissue and test it under the microscope for cancer. Common imaging modalities used are X-ray, MRI and Ultrasound. X-rays and MRI involve ionizing radiation which is harmful when a patient is suspected to have cancer. Apart from this, patients go through much discomfort during biopsy. Sometimes, multiple incisions are required to extract the desired tissue which prolongs the discomfort.This thesis describes a breast biopsy system using Ultrasound images. The main aim of …
Wlan Based Indoor Localization, Sreejith Sisupalan Lathikumari
Wlan Based Indoor Localization, Sreejith Sisupalan Lathikumari
Electrical Engineering Theses
Localization based on received signal strength has been a topic of Interest due to its relative simplicity in measurement and minimal hardware requirements. Much of the research in this field has been on developing an indoor propagation model. A generic indoor propagation model has largely been unsuccessful due to the complex multipath environment present in indoor environments. The main focus of this study is to find the position of the target when the estimated distance from the measurement points are known. The straightforward approach to this problem is by using trilateration techniques. A novel weighted centroid based method is introduced …
Guided-Mode Resonance Devices: Omnidirectional Reflectors, Wideband Absorbers, Sensors And Narrowband Filters, Wenhua Wu
Electrical Engineering Theses
In this thesis, a series of guided-mode resonance (GMR) devices are developed and optimized in the optical spectral region. Some of these devices are designed by inverse algorithms such as genetic algorithm and particle swarm optimization. One-dimensional subwavelength silicon and germanium gratings providing high omnidirectional reflectivity within specific band are designed respectively for TE and TM polarization. A simple amorphous silicon waveguide grating is proposed to enhance the absorbance for solar cells by 60% comparing with unpatterned structure. Another presented grating absorbs light nearly totally in the ~ 0.3-0.6 ìm wavelength band for all incidence angles independent of polarization, namely …
Silicon Wafer Defect Segmentation Using Modified Pulse Coupled Neural Network, Chaitanya Telidevara
Silicon Wafer Defect Segmentation Using Modified Pulse Coupled Neural Network, Chaitanya Telidevara
Electrical Engineering Theses
Defect segmentation has been a focal point in silicon wafer inspection research and it remains challenging because the defects are complicated by large variations in intensity distribution. An algorithm for silicon wafer defect segmentation is developed using a modified pulse coupled neural network (PCNN). The modified PCNN is simple version of the PCNN in which segmentation depends only on the linking coefficient and initial threshold. The initial threshold and linking coefficient are determined automatically from image statistics using method described in [17] and Otsu's method respectively. The modified PCNN method was found to be simple and efficient for silicon wafer …
Pilot Based Channel Estimation For 3gpp Lte Downlink, Ankit Ashok Agarwal
Pilot Based Channel Estimation For 3gpp Lte Downlink, Ankit Ashok Agarwal
Electrical Engineering Theses
Channel estimation is an important part for the design of receivers in mobile communication systems. In order to recover the transmitted information correctly, the effect of the channel on the transmitted signal must be correctly estimated. In this thesis, the pilot based channel estimation algorithms for 3GPP LTE downlink is studied. Channel estimation algorithms such as Least Square (LS), Minimum Mean Square Error (MMSE) and Modified MMSE (M-MMSE) channel estimation algorithm have been evaluated for LTE downlink 5 MHz bandwidth configuration. The performance of these algorithms for Block type and Comb type pilot arrangement has been measured in terms of …
Neptune: Mobile Manipulator With Advanced Human Robot Interaction, Pavan Kanajar
Neptune: Mobile Manipulator With Advanced Human Robot Interaction, Pavan Kanajar
Electrical Engineering Theses
This thesis describes Neptune, a mobile manipulator designed as an assistive device for task-related activities and rehabilitation of children with special needs. Neptune consists of a mobile robot base and a 6DOF robotic arm, and it is interfaced to users via Wii Remote, iPad, Neuro headset, a camera, and pressure sensors. These interfaces allow patients, therapists and operators to interact with the robot in multiple ways, as may be appropriate in assistive scenarios such as: direct physical interaction with the iPad, arm positioning exercises through Wii remote, remote navigation and object retrieval through the environment via the Neuro headset, etc. …
Behavioural Analysis Of Thermal Actuator Made Up Of Metals Like Titanium, Stainless Steel And Brass, Praveen Balaji Thangamani Balasubramanian
Behavioural Analysis Of Thermal Actuator Made Up Of Metals Like Titanium, Stainless Steel And Brass, Praveen Balaji Thangamani Balasubramanian
Electrical Engineering Theses
Out of the various MEMS actuators, thermal actuators are easy to realize and creates more force by consuming less power compared with other types of MEMS based actuators [2]-[4].Conventional thermal actuators are made up of poly silicon which requires the use of costlier equipment's for its fabrication and further it has to go through dark room processing which is time consuming. In our system the thermal actuator are made up of metals like titanium, stainless steel and brass which were fabricated using a programmable 5-W 355-nm laser system, which makes the fabrication process cheaper and less time consuming. Performance of …
Low Complexity Avs-M Using Machine Learning Algorithm C4.5, Pragnesh Ramolia
Low Complexity Avs-M Using Machine Learning Algorithm C4.5, Pragnesh Ramolia
Electrical Engineering Theses
AVS China is the latest video coding standard developed by the AVS work group of China employing the latest video coding tools for achieving high compression while preserving the quality of the video [15]. AVS China video standard has been proven superior to the existing video standards such as MPEG-2 and MPEG-4 part 2, in terms of reduced complexity and coding efficiency. AVS is a set of integrated standard system which contains systems, video, audio and media copyright management. AVS-M, the 7th part of the system is video codec targeting mobile devices. AVS-M uses high efficiency tools like macroblock portioning, …
Fingerprint Enhancement By Directional Filtering, Sreya Chakraborty
Fingerprint Enhancement By Directional Filtering, Sreya Chakraborty
Electrical Engineering Theses
Although inkless methods for taking fingerprint impressions are now available, these methods still suffer from the positional shifting caused by the skin elasticity. The non cooperative attitude of suspects or criminals also leads to smearing in parts of the fingerprint impressions. Thus a substantial amount of research reported in the literature on fingerprint identification is devoted to image enhancement techniques.The important step in fingerprint matching is the reliable fingerprint recognition. Automatic Fingerprint Recognition System relies on the input fingerprint for feature extraction. Hence, the effectiveness of feature extraction relies heavily on the quality of input fingerprint images. In this thesis …
Design And Development Of A General Purpose Embedded Acquisition System For Transportation Applications, Akshay Avinash Joshi
Design And Development Of A General Purpose Embedded Acquisition System For Transportation Applications, Akshay Avinash Joshi
Electrical Engineering Theses
The Texas Department of Transportation (TxDOT) uses many different instruments for quality assurance of new and existing pavements. These instruments measure the different characteristics of the pavement such as the longitudinal profile, transverse profile, texture, rut formation etc to determine the smoothness and ride quality of the pavement. These instruments mainly consist of different sensors such as a laser, an accelerometer and/or a gyroscope to calculate the ride quality. Different ride statistics like the International Roughness Index (IRI), Mean Profile Depth (MPD), Present Serviceability Index (PSI) are then calculated andused to determine the need for repair of the pavements. Currently …