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Articles 1 - 12 of 12
Full-Text Articles in Engineering
A Method To Improve Interest Point Detection And Its Gpu Implementation, Prabakar Karuppannan Gunashekhar
A Method To Improve Interest Point Detection And Its Gpu Implementation, Prabakar Karuppannan Gunashekhar
LSU Master's Theses
Interest point detection is an important low-level image processing technique with a wide range of applications. The point detectors have to be robust under affine, scale and photometric changes. There are many scale and affine invariant point detectors but they are not robust to high illumination changes. Many affine invariant interest point detectors and region descriptors, work on the points detected using scale invariant operators. Since the performance of those detectors depends on the performance of the scale invariant detectors, it is important that the scale invariant initial stage detectors should have good robustness. It is therefore important to design …
Electric Elevator Drive With Position Control, Peter James Ford
Electric Elevator Drive With Position Control, Peter James Ford
LSU Master's Theses
This thesis is a study on the implementation of an elevator’s position-controlled electric drive. The information contained within this paper serves as a framework to expand the usefulness of electric drives through the addition of digital control systems and switching power supplies. The tangible example of an elevator driven by a permanent-magnet DC motor is used for this paper so that students may relate to the work and apply it to their future projects. The tasks to be accomplished in order to achieve an electric elevator drive with position control are: determining the parameters of the permanent-magnet DC motor, designing …
Characterization Of Nanogumbos For Future Electronic Devices, Naveen Narayan Jagadish
Characterization Of Nanogumbos For Future Electronic Devices, Naveen Narayan Jagadish
LSU Master's Theses
In our work on hybrid (organic-inorganic) electronic materials (HEMs), we have developed a reasonably facile method for characterizing GUMBOS or a Group of Uniform Materials Based on Organic Salts. In addition to the versatility of traditional ionic liquids (i.e.-solubility, melting point, viscosity), NanoGUMBOS are functionalizable to exhibit properties such as fluorescence, magnetic susceptibility, and even antimicrobial activity. However, given our interest in the electrical properties of HEMs, we have made first-time measurements of NanoGUMBOS, using conductive probe Atomic Force Microscopy (CP-AFM), in order to deduce their room temperature current-voltage characteristics. In conjunction with the nanoscale imaging of AFM alone, we …
Micro Grid Stability Improvements By Employing Storage, Sumiti Lamichhane
Micro Grid Stability Improvements By Employing Storage, Sumiti Lamichhane
LSU Master's Theses
Storage devices can be used in a power gird to store the excess energy when the energy production is high and the demand is low and utilize the stored energy when the produced energy cannot meet the high demands of the consumers. This thesis represents a micro grid consisting of a conventional synchronous generator, as well as renewable energy sources, energy storage, and loads in order to investigate the effective energy flow control and transient stability improvement by employing thermal storage. Thermal storage, unlike electrical one (such as battery) is more environmental friendly, has longer life span, and is more …
Effect Of Electrical Vehicles On Residential Distribution Systems, Paul Haley
Effect Of Electrical Vehicles On Residential Distribution Systems, Paul Haley
LSU Master's Theses
This thesis focuses on the present state of electrical vehicles (EVs) in the market and the effects that these vehicles could have on residential distribution systems. The current EVs available on the market and the current level of market penetration were investigated. Advantages and disadvantages of EVs from a consumer and governmental perspective were identified. The efficiencies of the whole energy delivery process of electrical vehicles and gasoline vehicles were estimated. Efficiency estimation was used to estimate the impact of EVs on the consumption of fossil fuels and emission of greenhouse gases. Measurement of an EV battery charging cycle and …
An Electronic Architecture For Mediating Digital Information In A Hallway Fac̦Ade, Narendra Nallapeta Aswathanarayana Setty
An Electronic Architecture For Mediating Digital Information In A Hallway Fac̦Ade, Narendra Nallapeta Aswathanarayana Setty
LSU Master's Theses
Ubiquitous computing requires integration of physical space with digital information. This presents the challenges of integrating electronics, physical space, software and the interaction tools which can effectively communicate with the audience. Many research groups have embraced different techniques depending on location, context, space, and availability of necessary skills to make the world around us as an interface to the digital world. Encouraged by early successes and fostered by project undertaken by tangible visualization group. We introduce an architecture of Blades and Tiles for the development and realization of interactive wall surfaces. It provides an inexpensive, open-ended platform for constructing large-scale …
Non-Rigid Registration Of 2-D/3-D Dynamic Data With Feature Alignment, Huanhuan Xu
Non-Rigid Registration Of 2-D/3-D Dynamic Data With Feature Alignment, Huanhuan Xu
LSU Master's Theses
In this work, we are computing the matching between 2D manifolds and 3D manifolds with temporal constraints, that is we are computing the matching among a time sequence of 2D/3D manifolds. It is solved by mapping all the manifolds to a common domain, then build their matching by composing the forward mapping and the inverse mapping. At first, we solve the matching problem between 2D manifolds with temporal constraints by using mesh-based registration method. We propose a surface parameterization method to compute the mapping between the 2D manifold and the common 2D planar domain. We can compute the matching among …
Linear Pm Generator For Wave Energy Conversion, Rajkumar Parthasarathy
Linear Pm Generator For Wave Energy Conversion, Rajkumar Parthasarathy
LSU Master's Theses
The main objective of this thesis is to design a selected version of linear PM generator and to determine the electromechanical characteristics at variable operating conditions. To reach this objective, the linear generator with quasi-flat linear machine structure was selected and designed using the magnetic circuit theory. By applying 2-D and 3-D FEM the magnetic circuit was optimized and parameters of equivalent circuit were determined. The performance of generator operation are analyzed in steady-state and in dynamic conditions using MATLAB/SIMULINK. The analysis has been carried out at the secondary variable speed, which is changing sinusoidally according to the motion of …
Reactive Power Considerations In Reliability Analysis Of Solar Photovoltaic Systems, Dattatray N. Gaikwad
Reactive Power Considerations In Reliability Analysis Of Solar Photovoltaic Systems, Dattatray N. Gaikwad
LSU Master's Theses
Reliability is one of the key aspects of power system operation and therefore reliability analysis techniques are well developed. However reliability analysis conventionally takes into account active power and limited attention has been given to reactive power. Reactive power is very essential in maintaining voltage stability of power systems. The voltage constraint at network can restricts active power delivery to the loads and could result in forced load curtailment. This research investigates the effect of reactive power shortage on reliability of power systems with significant penetration of PV cells. The reactive power issues become more significant in distributed generation using …
Impact Of Plug-In Electrical Cars On Energy Demand, On Power System And On Environment, Sital Tiwari
Impact Of Plug-In Electrical Cars On Energy Demand, On Power System And On Environment, Sital Tiwari
LSU Master's Theses
The use of an electric vehicle (EV) over a gasoline vehicle (GV) is often portrayed as environment friendly or green movement ignoring how the electricity is produced. EVs get credit for preserving green environment and preventing global warming by minimizing the dependency on oil. Most of the time, these assumptions that favor EV are not well justified. Therefore, proper studies on the impact of electric vehicles on energy demand, on environment and on power system are necessary before reaching to any conclusion. This thesis explores the possibility of energy consumption pattern shift within the different sectors of energy use due …
Consensusability Of Discrete-Time Multi-Agent Systems, Abhishek Pandey
Consensusability Of Discrete-Time Multi-Agent Systems, Abhishek Pandey
LSU Master's Theses
The study of multi-agent systems (MAS) focuses on systems in which many intelligent agents interact within an environment. The agents are considered to be autonomous entities. MAS can be used to solve problems that are difficult or impossible for an individual agent to solve. The main feature which is achieved when developing MAS, if they work, is flexibility, since MAS can be added to, modified and reconstructed, without the need for detailed rewriting of the application. MAS can manifest self-organization as well as self-steering related complex behaviors even when the individual strategies of all their agents are simple. The goal …
Design Of Reverse Converters For The Multi-Moduli Residue Number Systems With Moduli Of Forms 2a, 2b - 1, 2c + 1, Naveen Kumar Samala
Design Of Reverse Converters For The Multi-Moduli Residue Number Systems With Moduli Of Forms 2a, 2b - 1, 2c + 1, Naveen Kumar Samala
LSU Master's Theses
Residue number system (RNS) is a non-weighted integer number representation system that is capable of supporting parallel, carry-free and high speed arithmetic. This system is error-resilient and facilitates error detection, error correction and fault tolerance in digital systems. It finds applications in Digital Signal Processing (DSP) intensive computations like digital filtering, convolution, correlation, Discrete Fourier Transform, Fast Fourier Transform, etc. The basis for an RNS system is a moduli set consisting of relatively prime integers. Proper selection of this moduli set plays a significant role in RNS design because the speed of internal RNS arithmetic circuits as well as the …