Neptune: Mobile Manipulator With Advanced Human Robot Interaction,
2011
University of Texas at Arlington
Neptune: Mobile Manipulator With Advanced Human Robot Interaction, Pavan Kanajar
Electrical Engineering Theses - Archive
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. …
Fingerprint Enhancement By Directional Filtering,
2011
University of Texas at Arlington
Fingerprint Enhancement By Directional Filtering, Sreya Chakraborty
Electrical Engineering Theses - Archive
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 …
Real-Time Dynamic Hand Shape Gesture Controller,
2011
University of Texas at Arlington
Real-Time Dynamic Hand Shape Gesture Controller, Rajesh Radhakrishnan
Electrical Engineering Theses - Archive
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 …
Development And Applications Of Laser Micromachined Inter-Digitated Capacitive Strain Sensors,
2011
University of Texas at Arlington
Development And Applications Of Laser Micromachined Inter-Digitated Capacitive Strain Sensors, Shreyas Kiran Thakar
Electrical Engineering Theses - Archive
Reliable strain measurement plays a very important role in the damage detection of the mechanical and civil structures. It can also have a significant contribution in assisting the proper functioning of human body and organs. The current strain sensors and measurement systems have significant drawbacks in terms of high sensitivity to temperature, low gauge factor, low biocompatibility and bulky data acquisition/conditioning circuitry. These factors make the strain measurement unreliable and expensive. In this work, we have developed a laser micro-machined inter-digitated capacitive strain sensor which allowed us to overcome the limitations of existing strain sensing technologies. The structural health monitoring …
Design Of A Novel Electrostatic Micro Energy Harvester,
2011
University of Texas at Arlington
Design Of A Novel Electrostatic Micro Energy Harvester, Madhumita Ambokar
Electrical Engineering Theses - Archive
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 …
Experimental Study Of Through-Wall Human Being Detection Using Ultra-Wideband Radar,
2011
University of Texas at Arlington
Experimental Study Of Through-Wall Human Being Detection Using Ultra-Wideband Radar, Ashith Kumar
Electrical Engineering Theses - Archive
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 …
Self-Assembled Synthesis Of Microfluidic Channels In Pdms,
2011
University of Texas at Arlington
Self-Assembled Synthesis Of Microfluidic Channels In Pdms, Jeyantt Srinivas Sankaran
Electrical Engineering Theses - Archive
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, …
Low Complexity H.264 Encoder Using Machine Learning For Streaming Applications,
2011
University of Texas at Arlington
Low Complexity H.264 Encoder Using Machine Learning For Streaming Applications, Suchethan Swaroop Vaidyanath
Electrical Engineering Theses - Archive
H.264, MPEG-4 part-10 or AVC, is the latest digital video codec standard which has proven to be superior than earlier standards in terms of compression ratio, quality,bit rates and error resilience [1]. Joint model (JM) reference software is used for academic reference and it was developed by the Joint Video Team (JVT) of ISO/IECMPEG and ITU-T VCEG (Video coding experts group). The Intel IPP H.264 (Integrated Performance Primitives) is a product of Intel which uses Intel IPP libraries and SIMD instructions available on modern processors. The Intel IPP H.264 is multithreaded and uses CPU optimized IPP routines. These two softwares …
Needle Detection And Localization In Simulated In-Vivo Ultrasound Image For Use In Breast Biopsy,
2011
University of Texas at Arlington
Needle Detection And Localization In Simulated In-Vivo Ultrasound Image For Use In Breast Biopsy, Nidhi Khullar
Electrical Engineering Theses - Archive
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 …
Physical Layer Test Trials And Analysis Of Call Drops And Real Time Throughput Versus Channel Capacity Of The Long Term Evolution (4g) Technology,
2011
University of Texas at Arlington
Physical Layer Test Trials And Analysis Of Call Drops And Real Time Throughput Versus Channel Capacity Of The Long Term Evolution (4g) Technology, Sanil Fulani
Electrical Engineering Theses - Archive
Wireless communication has evolved rapidly in recent years and demand for mobile devices with new and higher services is increasing. The 3G standard, Universal Mobile Telecommunication System (UMTS) is already upgraded with High Speed Packet Access (HSPA) to meet current demands, but this is not sufficient considering the current needs of high speed services. Considering the demand for high speed service, 3rd Generation Partnership Project (3GPP) has come up with a technology called Long Term Evolution (LTE) technology called as 4G with an objective of a radio access technology with higher data rates, lower latencies and packet services such as …
Dynamic Electrical Ratings And The Economics Of Capacity Factor For Wave Energy Converter Arrays,
2011
Technological University Dublin
Dynamic Electrical Ratings And The Economics Of Capacity Factor For Wave Energy Converter Arrays, Fergus Sharkey, Elva Bannon, Michael Conlon, Kevin Gaughan
Conference papers
Wave Energy Converters (WECs) have been in development for several decades with some devices now coming close to commercial realities. As such, pilot projects are being developed, particularly in the UK and Ireland, to deploy WECs on a pre-commercial array scale. The ultimate ambition is to have multiple WECs installed in a ‘wave farm’ in a similar fashion to offshore wind farms. For large scale wind farms the inter-array and export electrical systems can represent more than 20% of the project’s capital expenditure. Submarine power cables account for a large proportion of this cost. The same is expected to hold …
Virtualization And Self-Organization For Utility Computing,
2011
University of Central Florida
Virtualization And Self-Organization For Utility Computing, Mehdi Saleh
Electronic Theses and Dissertations
We present an alternative paradigm for utility computing when the delivery of service is subject to binding contracts; the solution we propose is based on resource virtualization and a selfmanagement scheme. A virtual cloud aggregates set virtual machines to work in concert for the tasks specified by the service agreement. A first step for the establishment of a virtual cloud is to create a scale-free overlay network through a biased random walk; scale-free networks enjoy a set of remarkable properties such as: robustness against random failures, favorable scaling, and resilience to congestion, small diameter, and average path length. Constrains such …
The Performance And Power Impact Of Using Multiple Dram Address Mapping Schemes In Multicore Processors,
2011
University of Central Florida
The Performance And Power Impact Of Using Multiple Dram Address Mapping Schemes In Multicore Processors, Rami Jadaa
Electronic Theses and Dissertations
Lowest-level cache misses are satisfied by the main memory through a specific address mapping scheme that is hard-coded in the memory controller. A dynamic address mapping scheme technique is investigated to provide higher performance and lower power consumption, and a method to throttle memory to meet a specific power budget. Several experiments are conducted on single and multithreaded synthetic memory traces -to study extreme cases- and validate the usability of the proposed dynamic mapping scheme over the fixed one. Results show that applications’ performance varies according to the mapping scheme used, and a dynamic mapping scheme achieves up to 2x …
Design And Simulation Of Cmos Active Mixers,
2011
University of Central Florida
Design And Simulation Of Cmos Active Mixers, Allen Gibson
Electronic Theses and Dissertations
This paper introduces a component of the Radio Frequency transceiver called the mixer. The mixer is a critical component in the RF systems, because of its ability for frequency conversion. This passage focuses on the design analysis and simulation of multiple topologies for the active down-conversion mixer. This mixer is characterized by its important design properties which consist of conversion gain, linearity, noise figure, and port isolation. The topologies that are given in this passage range from the most commonly known mixer design, to implemented design techniques that are used to increase the mixers important design properties as the demand …
The Acquisition Of Lexical Knowledge From The Web For Aspects Of Semantic Interpretation,
2011
University of Central Florida
The Acquisition Of Lexical Knowledge From The Web For Aspects Of Semantic Interpretation, Hansen A. Schwartz
Electronic Theses and Dissertations
This work investigates the effective acquisition of lexical knowledge from the Web to perform semantic interpretation. The Web provides an unprecedented amount of natural language from which to gain knowledge useful for semantic interpretation. The knowledge acquired is described as common sense knowledge, information one uses in his or her daily life to understand language and perception. Novel approaches are presented for both the acquisition of this knowledge and use of the knowledge in semantic interpretation algorithms. The goal is to increase accuracy over other automatic semantic interpretation systems, and in turn enable stronger real world applications such as machine …
Wireless Health Monitoring And Improvement System For Wind Turbines,
2011
University of Texas at Arlington
Wireless Health Monitoring And Improvement System For Wind Turbines, Suratsavadee Koonlaboon Korkua
Electrical Engineering Dissertations - Archive
Wind power has become the world's fastest growing renewable energy resource. The world-wide wind power installed capacity has exceeded 120 GW. The United States has set a target of 20% wind-based electricity generation, over 300 GW, by 2030. As wind power is growing towards becoming a major utility source, it is urgent to guarantee the reliable operation of wind power systems. To avoid unexpected equipment failures, the focus in most wind farm is shifting from scheduled preventive maintenance to predictive maintenance. Predictive maintenance by condition-based monitoring of electrical machines is a scientific approach that is becoming a new strategy for …
Short Circuit Analysis And Circuit Breaker Interrupting Capability Validations For Industrial Power Plants,
2011
University of Texas at Arlington
Short Circuit Analysis And Circuit Breaker Interrupting Capability Validations For Industrial Power Plants, Vijayanand Appanaicknepatti Ramachandran
Electrical Engineering Theses - Archive
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 …
Control System For Real Time Jitter Reduction And 3d Reconstruction Of Road Profile,
2011
University of Texas at Arlington
Control System For Real Time Jitter Reduction And 3d Reconstruction Of Road Profile, Digant Shah
Electrical Engineering Theses - Archive
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 …
Silicon Wafer Defect Segmentation Using Modified Pulse Coupled Neural Network,
2011
University of Texas at Arlington
Silicon Wafer Defect Segmentation Using Modified Pulse Coupled Neural Network, Chaitanya Telidevara
Electrical Engineering Theses - Archive
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 …
Design And Development Of A General Purpose Embedded Acquisition System For Transportation Applications,
2011
University of Texas at Arlington
Design And Development Of A General Purpose Embedded Acquisition System For Transportation Applications, Akshay Avinash Joshi
Electrical Engineering Theses - Archive
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 …
