Digital Commons Network^™

Callaway Golf: Variable Curved Impulse Sealer, Justin Cook, Ben Jones, Sean Reynolds

Mechanical Engineering

No abstract provided.

Module Cover Conductivity Enhancement, Niles Dhanens, James Fortner

Mechanical Engineering

A clam shell module cover for printed circuit boards (PCB) has been designed for use in Boeing’s AECM cabinet. The cover utilizes materials with high thermal conductivity and cools the PCB by conducting the heat to a cold plate interface. Materials were compared and aluminum 6061-T6, aluminum 3003, and annealed pyrolytic graphite (APG) were chosen. A prototype was built and tested using aluminum 6061-T6 which was able to dissipate 57.7% of the projected wattage. Issues may include unforeseen complications in assembly along with components performing at lower levels than specified by manufacturers. The APG prototype was unable to be tested …

Hydraulic Hand Press Final Project Report, Nathaniel Marc Brown, Matthew Thomas Knorr

Mechanical Engineering

This report provides a thorough description of the design of a hydraulic hand-operated press by mechanical engineering students at California Polytechnic State University, San Luis Obispo, California, for the Estrella Warbirds Museum in Paso Robles, California. It begins with research into hydraulic operations, a brief study of fluid power and incompressible fluids, and a look into existing products. Specified customer requirements stipulate the loading and general size constraints. As part of the project, a schedule is laid out following industry techniques. Brainstorming and decision matrices are utilized as well, conveying our design process. A basic structure is developed using strength …

Best-In-Class Global Bumper Reinforcement Beam, Garret Anthony Bautista, Chad Anthony Hardin, Benjamin Ray Taylor

Mechanical Engineering

Modern bumper systems are governed by laws and regulations imposed separately by various countries. Today, the regulations in China, North America, and Europe are becoming more similar, but there is not a widely accepted bumper reinforcement that meets the requirements of all markets around the globe.

A universal bumper reinforcement beam incorporating Plug-n-Play techniques was developed to meet and exceed all testing requirements and performance standards of each country. These Plug-n-Play techniques consist of adding energy absorbing attachments to the front of a base bumper beam. Simple beam analysis and FEA were the primary analysis tools in the development of …

Acknowledgements, The Mcnair Team

McNair Scholars Research Journal

No abstract provided.

Synthesis, Characterization And Potential Applications Of Fept Nanoparticles, Vikas Nandwana

Material Science and Engineering Dissertations - Archive

Monodisperse FePt nanoparticles with controlled size and geometry have drawn great attention in the last decade for fundamental scientific studies and for their potential applications in advanced materials and devices such as ultra-high-density magnetic recording media, exchange-coupled nanocomposite magnets, biomedicines and nanodevices. This dissertation focuses on the synthesis and characterization of FePt nanoparticles and their use in potential applications. The FePt nanoparticles of different size (2 to 16 nm) and shape (spherical, cubic, rod) were synthesized by a chemical solution method. The size and shape of these particles were controlled by adjusting reaction parameters. The as-synthesized FePt nanoparticles have chemically …

Design, Construction And Evaluation Of A Fueltank/Tool Box Combination, Michael R. Chase Jr

BioResource and Agricultural Engineering

This project is the design and development of a combination tool box and auxiliary fuel tank built as a single unit, specifically built for a 2000 Ford F250 short bed truck; having a fuel capacity exceeding 50 gallons; meeting federal requirements for motor vehicle fuel tanks; performing as an auxiliary tank using the factory fuel gauge and having a tool box that can carry a wide array of tools. This paper will describe the design considerations, the regulation requirements, the material selection, and the construction process of the combination tool box/fuel tank.

Rfid Modeling, Characterization, And Optimization, Joseph A. Cudrnak

Electrical Engineering

Passive RFID tags may be used to transmit a message to a reader. This technology is useful for many applications, including inventory systems. However, due to electromagnetic cancellation on conductive surfaces, the reader cannot detect RFID tags placed directly on conductive objects. Using tag characterization in an RF anechoic chamber and modeling in HFSS, three types of Omni ID tags were characterized and a design was proposed to maximize signal power delivered to the reader.

Wireless Pedometer, Jeffrey Lease

Electrical Engineering

No abstract provided.

Energy Harvesting From Elliptical Machines: Dc Converter Troubleshooting, Michelle Lum, Jonathan Yuen

Electrical Engineering

In continuing the global effort to integrate innovative technology and renewable energy in the world’s power system, Cal Poly endeavors to harvest energy from elliptical machines and feed that power back into the electrical grid. This continuation of the previous project, Energy Harvesting from Exercise Machines Self‐generating Elliptical Machines, seeks an alternative DC to DC converter to function within the existing elliptical self‐generating system. By attempting to implement this new DC to DC converter, the project strives to reduce the size of the converter in order to mount it on the elliptical machine. The project also tries to explain how …

Violin Note Detector Using Digital Signal Processing, Nathaniel Kyle Mopas

Electrical Engineering

No abstract provided.

Carmo Dairy Standard Operating Procedures, Jared Carmo

Dairy Science

No abstract provided.

Persistence And Success: A Study Of Cognitive, Social, And Institutional Factors Related To Retention Of Kalamazoo Promise Recipients At Western Michigan University, Michelle Ann Bakerson

Dissertations

The Kalamazoo Promise, a universal scholarship program announced in November 2005 provides four years of tuition and fees at any of Michigan's two- or fouryear public colleges or universities for students who have attended Kalamazoo Public Schools. This investment in the community is being replicated elsewhere across the nation, including Denver and Pittsburgh. The scholarship program lowers the cost of postsecondary education, thereby increasing incentives for high school graduation, college enrollment, and college completion. Of the 307 Kalamazoo Promise Scholarship recipients who have attended Western Michigan University since its inception, 16% have been academically dismissed.

The main objectives of this …

Anomaly Detection Techniques For Ad Hoc Networks, Chaoli Cai

Dissertations

Anomaly detection is an important and indispensable aspect of any computer security mechanism. Ad hoc and mobile networks consist of a number of peer mobile nodes that are capable of communicating with each other absent a fixed infrastructure. Arbitrary node movements and lack of centralized control make them vulnerable to a wide variety of unknown and known attacks from inside as well as from outside. In this dissertation we propose two efficient statistical techniques for anomaly detection for these networks.

In order to take into account incomplete testing samples and the interaction among multiple features, we present BANBAD •- a …

Comparison Among Different Via Models Based On Feature Selective Validation Technique, Siming Pan, Hanfeng Wang, Jun Fan

Electrical and Computer Engineering Faculty Research & Creative Works

A new approach is proposed in this paper to validate different uncertain approaches without knowing a standard reference by applying the Feature Selective Validation (FSV) technique. New reference is established by the weighted average of the various approaches. Four via modeling methods including physics-Based circuit model, equivalent transmission line model, multiple scattering model, and full wave model are compared and validated by the approach proposed in this paper to illustrate the effectiveness of different via modeling techniques. © 2009 IEEE.

Predicting Noise Voltage From Trace Crossing Split Planes On Printed Circuit Boards, Weifeng Pan, Samuel Connor, Bruce Archambeault

Electrical and Computer Engineering Faculty Research & Creative Works

Printed circuit Boards (PCBs) often have high speed data traces crossing splits in the adjacent reference planes due to space limitations and cost constraints. These split planes are usually different power islands on nearby layers. This work quantifies the effect of the split plane and the associated stitching capacitor for various stack up configurations. © 2009 IEEE.

On The Dual Basis For Solving Electromagnetic Surface Integral Equations, Mei Song Tong, Weng Cho Chew, Barry J. Rubin, Jason D. Morsey, Lijun Jiang

Electrical and Computer Engineering Faculty Research & Creative Works

A powerful technique for solving electromagnetic (EM) surface integral equations (SIEs) for inhomogenous objects by the method of moments (MoM) involves the well-known RaoWiltonGlisson (RWG) basis function to represent the electric current and, for field orthogonality and numerical stability reasons, a variation of the RWG basis known as the ňx RWG basis (where ň is a unit normal vector at the object surface) to represent the magnetic current. Though this combination provides a numerically efficient and effective solution that has been demonstrated on a variety of structures, one cannot feel entirely comfortable because of the presence of fictitious magnetic current …

Effect Of System Components On Electrical And Thermal Characteristics For Power Delivery Networks In 3d System Integration, Jianyong Xie, Daehyun Chung, Madhavan Swaminathan, Michael Mcallister, Alina Deutsch, Lijun Jiang, Barry J. Rubin

Electrical and Computer Engineering Faculty Research & Creative Works

In this paper, parameterized electrical-thermal co-analysis for power delivery networks (PDN) in 3D system integration is carried out. A 3D integrated system including glass-ceramic substrate, single and stacked dies, power delivery network, through-silicon vias (TSVs), controlled collapse chip connections (C4s), underfill material, and thermal interface material (TIM) is analyzed with several variable parameters. The analysis results show that temperature effects on DC IR drop can not be neglected. The TIM thermal conductivity, C4 density, stacking order of stacked dies, and voltage source location affect the final IR drop and hot spot temperature in the system. ©2009 IEEE.

Commercialization Of Hydrogen Fuel Cell Technology In North America: Pathways To Success In Northeast Ohio, E. Brandon Henneman, Et Al.

All Maxine Goodman Levin School of Urban Affairs Publications

The feasibility of hydrogen as a source of energy has been researched in one capacity or another for over a century. The first usage of the term ‘hydrogen economy’ is attributed to 11John Bockris in 1970. At the time, Dr. Bockris was a professor at the University of Pennsylvania. During a discussion at the General Motors technical center in Michigan he used this term to describe his vision of United States cities being supplied with energy derived from the sun. Typical of a disruptive technology, many years of laboratory testing have created a hydrogen fuel cell product that is ready …

Emc Guideline For Synchronous Buck Converter Design, Keong Kam, David Pommerenke, Federico Centola, Cheung Wei Lam, Robert Steinfeld

Electrical and Computer Engineering Faculty Research & Creative Works

Synchronous buck converters generate broadband noise typically in 50 - 300 MHz range. in this paper, the root cause of this broadband noise and possible coupling mechanisms are analyzed. Then, a list of EMC design guideline for minimizing the broadband noise is presented. the guideline contains circuit level guideline which involves input filtering, component selection, and an effective snubber strategy using a parallel resistor and inductor. the guideline also contains layout level guideline, which involves decoupling capacitor placement, layer stack up, and minimizing exposed phase voltage area. for each suggested guideline item, an example illustrates the impact of the particular …

Analytical Formulas For The Barrel-Plate And Pad-Plate Capacitance In The Physics-Based Via Circuit Model For Signal Integrity Analysis Of Pcbs, Yaojiang Zhang, Erping Li, Zawzaw Oo, Wenzu Zhang, Enxiao Liu, Xinchang Wei, Jun Fan

Electrical and Computer Engineering Faculty Research & Creative Works

The current distribution along via barrel and pad is obtained by the Green's function of a generalized coaxial cavity for a magnetic frill current. an analytical formula for both the barrel-plate and pad-plate capacitances are derived by observing the current difference along the via barrel and pad. Finite difference method has been used to validate the formula derived here. Analytical formula presented facilitates the implementation of the physics-Based via circuit model in practical via designs for printed circuit boards and packages. the impact of various via geometric parameters on the parasitic capacitances has been investigated. ©2009 IEEE.

Further Development Of The Overload Risk Index, An Indicator Of System Vulnerability, John Rossmaier, Badrul Chowdhury

Electrical and Computer Engineering Faculty Research & Creative Works

This paper develops and expands on a previously devised vulnerability index in an attempt to make the index more robust in describing a power system's total vulnerability level. the previous index was derived using a dc load flow analysis using line outage distribution factors and Monte Carlo simulation that incorporated the unavailability rates of the transmission lines within the system. the updated index incorporates the following improvements: (a) tests to determine bus islanding in the system, (b) steady-state stability tests, (c) an optimal power flow to determine a more accurate steady-state point of operation, (d) ac analysis for a greater …

Unit Commitment With Vehicle-To-Grid Using Particle Swarm Optimization, Ahmed Yousuf Saber, Ganesh K. Venayagamoorthy

Electrical and Computer Engineering Faculty Research & Creative Works

Vehicle-to-Grid (V2G) technology has drawn great interest in the recent years. Success of the V2G research depends on efficient scheduling of grid able vehicles in limited parking lots. V2G can reduce dependencies on small expensive units in the existing power systems as energy storage that can decrease running costs. It can efficiently manage load fluctuation, peak load; however, it increases spinning reserves and reliability. as number of grid able vehicles in V2G is much higher than small units of existing systems, unit commitment (UC) with V2G is more complex than basic UC for thermal units. Particle swarm optimization (PSO) is …

Equivalent Mixed-Mode Characteristic Impedances For Differential Signal Vias, Siming Pan, Jun Fan

Electrical and Computer Engineering Faculty Research & Creative Works

Differential signal via structures in multi-layer printed circuit boards (PCBs) and packages are studied using an equivalent coupled multi-conductor transmission-line model. Thus, easy-to-understand transmission-line concepts, such as mixed-mode characteristic impedances and propagation constants, can be used to characterize the performance of differential signal via structures in a signal path. the closed-form expressions of per-unit-length parameters in the equivalent coupled multi-conductor transmission-line model are derived based on a physics-Based via circuit model with parallel-plane impedances and via-plate capacitances. Mode conversions are discussed for different via structures. Effects of geometrical parameters on equivalent differential via impedances are studied in the paper as …

A Real-Time Implementation Of A Pbil Based Stabilizing Controller For Synchronous Generator, Komla A. Folly, Ganesh K. Venayagamoorthy

Electrical and Computer Engineering Faculty Research & Creative Works

This paper presents the optimal tuning of power system stabilizer parameters using a newly introduced evolutionary algorithm called Population based Incremental Learning (PBIL). to robustly stabilize the system, an objective function that minimizes the infinity norm of the closed-loop system is introduced such that the parameters of a fixed structure PSS are optimally tuned, and the controller stabilizes a pre-specified set of system models. the PBIL-PSS is compared with the Conventional PSS (CPSS). the simulation results presented in this paper show that the proposed PBIL-PSS is more effective than the Conventional PSS in damping the low frequency oscillations. the performance …

Library Education And Development Newsletter, Volume 3, Issue 2 (December 2009), Uno Library Science Education

Library Education and Development (L.E.A.D.)

This issue of the Library Education and Development Newsletter features Advice from the Frontlines from Shirley Kroenke, a Student Spotlight of Jeanie Kooima, Announcements, Conferences and Professional Development, and the 2010 Heartland School Library Conference registration form.

Trust In The Shadows: Law, Behavior, And Financial Re-Regulation, Raymond H. Brescia

Buffalo Law Review

No abstract provided.

Spatial Frequency Localization In Mammograms Using Wavelets, Tomislav Bujanovic

Dissertations

Microcalcifications are residual calcium deposits that are often the first signs of developing breast abnormalities that may lead to breast cancer. Up to 30% of cancerous lesion in diagnosed breast cancer cases could have been detected earlier through mammogram screenings if the right tools were available. While the detection of calcifications may be easier in fatty backgrounds, it is challenging in dense parenchyma, suggesting the need for more sensitive tools for accurately identifying suspicious regions in mammograms and propping a computer-aided system for further target classification. Therefore, the objective of the research work in this dissertation is to develop a …

Computational Fluid Dynamics Modeling Of Atmospheric Flow Applied To Wind Energy Research, Alan Russell

Boise State University Theses and Dissertations

High resolution atmospheric flow modeling using computational fluid dynamics (CFD) has many applications in the wind energy industry. A well designed model can accurately calculate wind speed, direction, and turbulence at any point in a wind farm using data from a fixed location source. The model can extend point source data over an area of several square kilometers, or map terrain influenced microclimates using remote wind data. A local flow model is critical for wind resource site assessment, and for optimizing wind farm turbine layout for maximum power production. A CFD simulation of an operating wind farm, coupled with a …

Kendall's Tau And Spearman's Rho For Zero-Inflated Data, Ronald Silva Pimentel

Dissertations

Zero-inflated continuous distributions have positive probability mass at zero in addition to a continuous distribution. Such type of data can be encountered, for example, in medical, environmental and financial research. The main focus of this research is to study the association of nonnegative random variables, both having a positive probability mass at zero. New estimators of the classical measures of association, Kendall's tau and Spearman's rho, appropriate for the zero-inflated distributions, are proposed and their asymptotic distributions are derived. Performance of the estimators is assessed by a Monte Carlo simulation study. New ideas are illustrated by a real data example.