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- Electrical and Computer Engineering Faculty Publications and Presentations (20)
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Articles 1 - 30 of 45
Full-Text Articles in Engineering
Closure To "Estimation Of The Water Balance Using Observed Soil Water In The Nebraska Sandhills", Venkataramana Sridhar, K. G. Hubbard
Closure To "Estimation Of The Water Balance Using Observed Soil Water In The Nebraska Sandhills", Venkataramana Sridhar, K. G. Hubbard
Civil Engineering Faculty Publications and Presentations
We are thankful to Szilagyi [2010] for providing us an opportunity to discuss the important points of our paper [Sridhar and Hubbard, 2010]. We demonstrated a seasonal water balance assessment using the Modified Thornthwaite-Mather (TM) model in the Nebraska Sandhills. We computed the water budget for a few representative weather monitoring stations located in the Sandhills using the high resolution soil moisture data to assess the storage. In our water balance analysis, soil moisture storage is determined based on observed soil moisture and actual evapotranspiration, ETact was computed for each month using the change in storage in soil water …
A Study Of The Lyapunov Stability Of An Open-Loop Induction Machine, Ahmed Oteafy, John Chiasson
A Study Of The Lyapunov Stability Of An Open-Loop Induction Machine, Ahmed Oteafy, John Chiasson
Electrical and Computer Engineering Faculty Publications and Presentations
The induction motor is widely utilized in industry and exists in a plethora of applications. Until the last 20 years or so, it was primarily used in an open-loop fashion (i.e., balanced sinusoidal voltages, constant load torque and viscous friction) with its inherent stability counted on to allow operation over a wide range of operating conditions. Unlike classical arguments based on the steady-state torque-slip curve, a rigorous analytical stability argument using the full nonlinear dynamical model is presented. In particular, conditions for global asymptotic stability of the induction motor in the sense of Lyapunov are given in terms of the …
Individual Muscle Contributions To The Axial Knee Joint Contact Force During Normal Walking, Kotaro Sasaki, Richard R. Neptune
Individual Muscle Contributions To The Axial Knee Joint Contact Force During Normal Walking, Kotaro Sasaki, Richard R. Neptune
Mechanical and Biomedical Engineering Faculty Publications and Presentations
Muscles are significant contributors to the high joint forces developed in the knee during human walking. Not only do muscles contribute to the knee joint forces by acting to compress the joint, but they also develop joint forces indirectly through their contributions to the ground reaction forces via dynamic coupling. Thus, muscles can have significant contributions to forces at joints they do not span. However, few studies have investigated how the major lower-limb muscles contribute to the knee joint contact forces during walking. The goal of this study was to use a muscle-actuated forward dynamics simulation of walking to identify …
Cavity Resonant Mode In A Metal Film Perforated With Two-Dimensional Triangular Lattice Hole Arrays, Wan Kuang, Alex English, William B. Knowlton, Jeunghoon Lee, William L. Hughes, Bernard Yurke
Cavity Resonant Mode In A Metal Film Perforated With Two-Dimensional Triangular Lattice Hole Arrays, Wan Kuang, Alex English, William B. Knowlton, Jeunghoon Lee, William L. Hughes, Bernard Yurke
Electrical and Computer Engineering Faculty Publications and Presentations
The transmission property of metallic films with two-dimensional hole arrays is studied experimentally and numerically. For a triangular lattice subwavelength hole array in a 150 nm thick Ag film, both cavity resonance and planar surface modes are identified as the sources of enhanced optical transmissions. Semi-analytical models are developed for calculating the dispersion relation of the cavity resonant mode. They agree well with the experimental results and full-wave numerical calculations. Strong interaction between the cavity resonant mode and surface modes is also observed.
Silver Chalcogenide Based Memristor Devices, Antonio S. Oblea, Achyut Timilsina, David Moore, Kristy A. Campbell
Silver Chalcogenide Based Memristor Devices, Antonio S. Oblea, Achyut Timilsina, David Moore, Kristy A. Campbell
Electrical and Computer Engineering Faculty Publications and Presentations
We have fabricated two-terminal chalcogenide-based devices containing Ge2Se3 and Ag that function as memristors. These devices have been electrically characterized at room temperature using quasi-static DC methods, AC sinusoidal methods, and AC pulse testing methods. In all cases, the devices exhibit memristive behavior.
A Junction And Drop-Shaft Boundary Conditions For Modeling Free Surface, Pressurized, And Mixed Free Surface-Pressurized Transient Flows, Arturo S. León, Xiaofeng Liu, Mohamed S. Ghidaoui, Arthur R. Schmidt, Marcelo H. García
A Junction And Drop-Shaft Boundary Conditions For Modeling Free Surface, Pressurized, And Mixed Free Surface-Pressurized Transient Flows, Arturo S. León, Xiaofeng Liu, Mohamed S. Ghidaoui, Arthur R. Schmidt, Marcelo H. García
Civil Engineering Faculty Publications and Presentations
A junction and drop-shaft boundary conditions (BCs) for one-dimensional modeling of transient flows in single-phase conditions (pure liquid) are formulated, implemented and their accuracy are evaluated using two Computational Fluid Dynamics (CFD) models. The BCs are formulated for the case when mixed flows are simulated using two sets of govern- ing equations, the Saint Venant equations for the free surface regions and the compressible water hammer equations for the pressurized regions. The proposed BCs handle all possible flow regimes and their combinations. The flow in each pipe can range from free surface to pressurized flow and the water depth at …
Joint Loop End Modeling Improves Covariance Model Based Non-Coding Rna Gene Search, Jennifer Smith
Joint Loop End Modeling Improves Covariance Model Based Non-Coding Rna Gene Search, Jennifer Smith
Electrical and Computer Engineering Faculty Publications and Presentations
The effect of more detailed modeling of the interface between stem and loop in non-coding RNA hairpin structures on efficacy of covariance-model-based non-coding RNA gene search is examined. Currently, the prior probabilities of the two stem nucleotides and two loop-end nucleotides at the interface are treated the same as any other stem and loop nucleotides respectively. Laboratory thermodynamic studies show that hairpin stability is dependent on the identities of these four nucleotides, but this is not taken into account in current covariance models. It is shown that separate estimation of emission priors for these nucleotides and joint treatment of substitution …
Programmable Periodicity Of Quantum Dot Arrays With Dna Origami Nanotubes, Hieu Bui, Craig Onodera, Carson Kidwell, Yerpeng Tan, Elton Graugnard, Wan Kuang, Jeunghoon Lee, William B. Knowlton, Bernard Yurke, William L. Hughes
Programmable Periodicity Of Quantum Dot Arrays With Dna Origami Nanotubes, Hieu Bui, Craig Onodera, Carson Kidwell, Yerpeng Tan, Elton Graugnard, Wan Kuang, Jeunghoon Lee, William B. Knowlton, Bernard Yurke, William L. Hughes
Materials Science and Engineering Faculty Publications and Presentations
To fabricate quantum dot arrays with programmable periodicity, functionalized DNA origami nanotubes were developed. Selected DNA staple strands were biotin-labeled to form periodic binding sites for streptavidin-conjugated quantum dots. Successful formation of arrays with periods of 43 and 71 nm demonstrates precise, programmable, large-scale nanoparticle patterning; however, limitations in array periodicity were also observed. Statistical analysis of AFM images revealed evidence for steric hindrance or site bridging that limited the minimum array periodicity.
Kinetics Of Dna And Rna Hybridization In Serum And Serum-Sds, Elton Graugnard, Amber Cox, Jeunghoon Lee, Cheryl Jorcyk, Bernard Yurke, William L. Hughes
Kinetics Of Dna And Rna Hybridization In Serum And Serum-Sds, Elton Graugnard, Amber Cox, Jeunghoon Lee, Cheryl Jorcyk, Bernard Yurke, William L. Hughes
Materials Science and Engineering Faculty Publications and Presentations
Cancer is recognized as a serious health challenge both in the United States and throughout the world. While early detection and diagnosis of cancer leads to decreased mortality rates, current screening methods require significant time and costly equipment. Recently, increased levels of certain micro-ribonucleic acids (miRNAs) in the blood have been linked to the presence of cancer. While blood-based biomarkers have been used for years in cancer detection, studies analyzing trace amounts of miRNAs in blood and serum samples are just the beginning. Recent developments in deoxyribonucleic acid (DNA) nanotechnology and DNA computing have shown that it is possible to …
Synthesis Of Higher-Order K-Delta-1-Sigma Modulators For Wideband Adcs, Vishal Saxena, R. Jacob Baker
Synthesis Of Higher-Order K-Delta-1-Sigma Modulators For Wideband Adcs, Vishal Saxena, R. Jacob Baker
Electrical and Computer Engineering Faculty Publications and Presentations
As CMOS technology shrinks, the transistor speed increases enabling higher speed communications and more complex systems. These benefits come at the cost of decreasing inherent device gain, increased transistor leakage currents and device mismatches due to process variations. All of these drawbacks affect the design of high-resolution analog-to-digital converters (ADCs) in nano-CMOS processes. To move towards an ADC topology useful in nano-CMOS, the K-Delta-1-Sigma (KD1S) modulator-based ADC was proposed. This paper extends the KD1S to higher order topologies using a systematic synthesis procedure. Second and third order KD1S modulator are designed and simulated to demonstrate the synthesis method.
Indirect Compensation Techniques For Three-Stage Fully-Differential Op-Amps, Vishal Saxena, R. Jacob Baker
Indirect Compensation Techniques For Three-Stage Fully-Differential Op-Amps, Vishal Saxena, R. Jacob Baker
Electrical and Computer Engineering Faculty Publications and Presentations
As CMOS technology continues to evolve, the
supply voltages are decreasing while at the same time the transistor threshold voltages are remaining relatively constant. Making matters worse, the inherent gain available from the nano-CMOS transistors is dropping. Traditional techniques for achieving high-gain by cascoding become less useful in nano-scale CMOS processes. Horizontal cascading (multi-stage) must be used in order to realize high-gain op-amps in low supply voltage processes. This paper discusses indirect compensation techniques for op-amps using split-length devices. A reversed-nested indirect compensated (RNIC) topology, employing double pole-zero cancellation, is illustrated for the design of three-stage op-amps. The RNIC topology …
A Reconfigurable Pattern Matching Hardware Implementation Using On-Chip Ram-Based Fsm, Nader I. Rafla, Indrawati Gauba
A Reconfigurable Pattern Matching Hardware Implementation Using On-Chip Ram-Based Fsm, Nader I. Rafla, Indrawati Gauba
Electrical and Computer Engineering Faculty Publications and Presentations
The use of synthesizable reconfigurable IP cores has increasingly become a trend in System on Chip (SoC) designs because of their flexibility and powerful functionality. The market introduction of multi-featured platform FPGAs equipped with embedded memory and processor blocks has further expanded the possibility of utilizing dynamic reconfiguration to improve overall system adaptability to meet varying product requirements. In this paper, a reconfigurable hardware implementation for pattern matching using Finite State machine (FSM) is proposed. The FSM design is RAMbased and is reconfigured on the fly through altering memory contents only. An embedded processor is used for orchestrating run time …
Application Of A Bayesian Inference Method To Reconstruct Short-Range Atmospheric Dispersion Events, Inanc Senocak
Application Of A Bayesian Inference Method To Reconstruct Short-Range Atmospheric Dispersion Events, Inanc Senocak
Mechanical and Biomedical Engineering Faculty Publications and Presentations
In the event of an accidental or intentional release of chemical or biological (CB) agents into the atmosphere, first responders and decision makers need to rapidly locate and characterize the source of dispersion events using limited information from sensor networks. In this study the stochastic event reconstruction tool (SERT) is applied to a subset of the Fusing Sensor Information from Observing Networks (FUSION) Field Trial 2007 (FFT 07) database. The inference in SERT is based on Bayesian inference with Markov chain Monte Carlo (MCMC) sampling. SERT adopts a probability model that takes into account both positive and zero-reading sensors. In …
Discussion Of "Potential Dangers Of Simplifying Combined Sewer Hydrologic/Hydraulic Models” By Joshua P. Cantone And Arthur R. Schmidt, Arturo S. León, Leonardo S. Nania, Venkataramana Sridhar
Discussion Of "Potential Dangers Of Simplifying Combined Sewer Hydrologic/Hydraulic Models” By Joshua P. Cantone And Arthur R. Schmidt, Arturo S. León, Leonardo S. Nania, Venkataramana Sridhar
Civil Engineering Faculty Publications and Presentations
The authors of this paper provide a valuable discussion on the potential dangers of conduit skeletonization and subcatchment aggregation. For assessing these potential dangers, a "base model" (includes all sewers, nodes, inlets and gutters) and simplified models (successive removal of elements) of two catchments were used. The discussers congratulate the authors for their work on this relevant issue and for presenting their results in a clear and well organized way. The discussers however would like to raise some questions and comments regarding the results and their interpretation as presented in the paper.
Software Defined Radio: Inexpensive Hardware And Software Tools, Thad B. Welch, Cameron H. G Wright, Michael G. Morrow
Software Defined Radio: Inexpensive Hardware And Software Tools, Thad B. Welch, Cameron H. G Wright, Michael G. Morrow
Electrical and Computer Engineering Faculty Publications and Presentations
DSP topics such as software defined radio are more easily taught if appropriate demonstrations and laboratory experiences are provided. This paper describes a new, inexpensive software defined radio educational platform based upon MATLAB and the Texas Instruments C6713 digital signal processing starter kit. We describe the hardware and software issues and briefly describe recommended classroom use.
Teaching Inquiry-Based Stem In The Elementary Grades Using Manipulatives: A Systemic Solution Report, Louis S. Nadelson, Anne Hay, Pat Pyke, Janet Callahan, Cheryl Schrader
Teaching Inquiry-Based Stem In The Elementary Grades Using Manipulatives: A Systemic Solution Report, Louis S. Nadelson, Anne Hay, Pat Pyke, Janet Callahan, Cheryl Schrader
Curriculum, Instruction, and Foundational Studies Faculty Publications and Presentations
Young learners come to school holding myriad conceptions about how the world works, particularly in the areas of science, technology, engineering, and mathematics, or STEM.1-3 Further, young students' conceptions are commonly based on fragmented knowledge or naïve perspectives that contribute to the importance of early exposure to and practice with scrutinizing situations scientifically.1,3 An important part of helping children gain the skills necessary to approach situations scientifically involves preparing them to conduct scientific inquiry.3 The development of critical thinking skills and scientific approaches to problem solving should begin early in education.4 However, lack of elementary …
Compact Method For Modeling And Simulation Of Memristor Devices: Ion Conductor Chalcogenide-Based Memristor Devices, Kristy A. Campbell, Antonio Oblea, Achyut Timilsina
Compact Method For Modeling And Simulation Of Memristor Devices: Ion Conductor Chalcogenide-Based Memristor Devices, Kristy A. Campbell, Antonio Oblea, Achyut Timilsina
Electrical and Computer Engineering Faculty Publications and Presentations
A compact model and simulation methodology for chalcogenide based memristor devices is proposed. From a microprocessor design view point, it is important to be able to simulate large numbers of devices within the integrated circuit architecture in order to speed up reliably the development process. Ideally, device models would accurately describe the characteristic device behavior and would be represented by single-valued equations without requiring the need for recursive or numerically intensive solutions. With this in mind, we have developed an empirical chalcogenide compact memristor model that accurately describes all regions of operations of memristor devices employing single-valued equations.
An Analysis Of Binarization Ground Truthing, Elisa H. Barney Smith
An Analysis Of Binarization Ground Truthing, Elisa H. Barney Smith
Electrical and Computer Engineering Faculty Publications and Presentations
The accuracy of a binarization algorithm is often calculated relative to a ground truth image. Except for synthetically generated images, no ground truth image exists. Evaluating binarization on real images is preferred. The ground truthing between and among different operators is compared. Four direct metrics were used. The variability of the results of five different automatic binarization algorithms were compared to that of manual ground truth results. Significant variability in the ground truth results was found.
Case Study Of Finite Resource Optimization In Fpga Using Genetic Algorithm, Jingxia Wang, Sin Ming Loo
Case Study Of Finite Resource Optimization In Fpga Using Genetic Algorithm, Jingxia Wang, Sin Ming Loo
Electrical and Computer Engineering Faculty Publications and Presentations
Modem Field-Programmable Gate Arrays (FPGAs) are becoming very popular in embedded systems and high performance applications. FPGA has benefited from the shrinking of transistor feature size, which allows more on-chip reconfigurable (e.g., memories and look-up tables) and routing resources available. Unfortunately, the amount of reconfigurable resources in a FPGA is fixed and limited. This paper investigates the mapping scheme of the applications in a FPGA by utilizing sequential processing (e.g., Altera Nios II or Xilinx Microblaze, using C programming language) and task specific hardware (using hardware description language). Genetic Algorithm is used in this study. We found that placing sequential …
Optimizing Reconfigurable Hardware Resource Usage In System-On-A-Programmable-Chip With Location-Aware Genetic Algorithm, Sin Ming Loo, Jingxia Wang
Optimizing Reconfigurable Hardware Resource Usage In System-On-A-Programmable-Chip With Location-Aware Genetic Algorithm, Sin Ming Loo, Jingxia Wang
Electrical and Computer Engineering Faculty Publications and Presentations
This paper presents static task scheduling using location-aware genetic algorithm techniques to schedule task systems to finite amounts of reconfigurable hardware. This research optimizes the use of limited reconfigurable resources. This scheduling algorithm is built upon our previous work [12- 14]. In this paper, the genetic algorithm has been expanded to include a feature to assign selected tasks to specific functional units. In this reconfigurable hardware environment, multiple sequential processing elements (soft core processors such as Xilinx MicroBlaze [22] or Altera Nios-II [1]), task-specific core (application specific hardware), and communication network within the reconfigurable hardware can be used (such a …
Limitations Of Poole–Frenkel Conduction In Bilayer Hfo2/Sio2 Mos Devices, Richard G. Southwick Iii, Justin Reed, Christopher Buu, Ross Butler, Gennadi Bersuker, William B. Knowlton
Limitations Of Poole–Frenkel Conduction In Bilayer Hfo2/Sio2 Mos Devices, Richard G. Southwick Iii, Justin Reed, Christopher Buu, Ross Butler, Gennadi Bersuker, William B. Knowlton
Materials Science and Engineering Faculty Publications and Presentations
The gate leakage current of metal–oxide– semiconductors (MOSs) composed of hafnium oxide (HfO2) exhibits temperature dependence, which is usually attributed to the standard Poole–Frenkel (P–F) transport model. However, the reported magnitudes of the trap barrier height vary significantly. This paper explores the fundamental challenges associated with applying the P–F model to describe transport in HfO2/SiO2 bilayers in n/p MOS field-effect transistors composed of 3- and 5-nm HfO2 on 1.1-nm SiO2 dielectric stacks. The extracted P–F trap barrier height is shown to be dependent on several variables including the following: the temperature range, method …
Computation Intelligence Method To Find Generic Non-Coding Rna Search Models, Jennifer A. Smith
Computation Intelligence Method To Find Generic Non-Coding Rna Search Models, Jennifer A. Smith
Electrical and Computer Engineering Faculty Publications and Presentations
Fairly effective methods exist for finding new noncoding RNA genes using search models based on known families of ncRNA genes (for example covariance models). However, these models only find new members of the existing families and are not useful in finding potential members of novel ncRNA families. Other problems with family-specific search include large processing requirements, ambiguity in defining which sequences form a family and lack of sufficient numbers of known sequences to properly estimate model parameters. An ncRNA search model is proposed which includes a collection of non-overlapping RNA hairpin structure covariance models. The hairpin models are chosen from …
Implications Of Climate-Driven Variability And Trends For The Hydrologic Assessment Of The Reynolds Creek Experimental Watershed, Idaho, V. Sridhar, Anurag Nayak
Implications Of Climate-Driven Variability And Trends For The Hydrologic Assessment Of The Reynolds Creek Experimental Watershed, Idaho, V. Sridhar, Anurag Nayak
Civil Engineering Faculty Publications and Presentations
The Soil and Water Assessment Tool (SWAT) model was used to assess the implications of long-term climate trends for the hydroclimatology of the Reynolds Creek Experimental Watershed (RCEW) in the Owyhee Mountains, Idaho of the Intermountain West over a 40- year period (1967-2006). Calibration and validation of the macroscale hydrology model in this highly monitored watershed is key to address the watershed processes that are vulnerable to both natural climate variability and climate change and . The model was calibrated using the streamflow data collected between 1997 and 2006 from the three nested weirs, the Reynolds Mountain East (RME) , …
Main Memory With Proximity Communication: A Wide I/O Dram Architecture, Qawi Harvard, R. Jacob Baker, Robert Drost
Main Memory With Proximity Communication: A Wide I/O Dram Architecture, Qawi Harvard, R. Jacob Baker, Robert Drost
Electrical and Computer Engineering Faculty Publications and Presentations
The bandwidth and power consumption of dynamic random access memory (DRAM), used as the main memory of a computer system, impacts computer execution rates. DRAM manufacturers focus on density increases, due to the innate price per bit decline of main memory, while processor manufacturers continually focus on boosting performance. This leads to a performance gap between the two technologies. Proximity communication promises to increase the off/on chip bandwidth of DRAM products while reducing the power consumption of the main memory system. The design of a memory system employing 4 Gb DRAM chips with a 64-bit wide communication bus using proximity …
Gain Error Correction For Cmos Image Sensor Using Delta-Sigma Modulation, Kuangming Yap, R. Jacob Baker
Gain Error Correction For Cmos Image Sensor Using Delta-Sigma Modulation, Kuangming Yap, R. Jacob Baker
Electrical and Computer Engineering Faculty Publications and Presentations
A delta-sigma modulation analog-to-digital converter (ADC) has many benefits over the use of a pipeline ADC in a CMOS image sensor. This includes lower power, noise reduction, ease of maximizing the input range, and simpler signal routing for large arrays. Multiple delta-sigma modulation ADC is required in a CMOS image sensor, one for each pixel column. Any voltage threshold mismatch between ADCs will introduce gain and offset error in its transfer function, which will lead to fix pattern noise. Correcting these gain and offset error for every ADCs in the image sensor will require a complex digital signal processor. Therefore, …
Characterization Of Emissions Of Wax-Based Products During Combustion, Ben Albiston, Crystal Grasmick
Characterization Of Emissions Of Wax-Based Products During Combustion, Ben Albiston, Crystal Grasmick
College of Engineering Poster Presentations
Currently, over 40% of the global burden of disease is attributed to environmental factors; of this, 2.6% of disease is attributed to indoor pollutants. When considering that people currently spend about 85 percent of their time indoors, this is a concerning statistic. Environmental and health concerns have pushed scientists to develop new cleaner and greener burning wax-based products. E3 Fuels has developed an additive that is claimed to reduce the emissions, both particulate and gaseous, associated with the combustion of hydrocarbons in solid wax-based products. In this study, the aforementioned emissions were qualified and quantified in paraffin candles using various …
Process Development For Advanced Complex Nuclear Oxide Fuels, Richard Reavis, Daniel Osterberg
Process Development For Advanced Complex Nuclear Oxide Fuels, Richard Reavis, Daniel Osterberg
College of Engineering Poster Presentations
Oxide nuclear fuel processing has the ability to convert long-lived actinide waste into short-lived fission products through fast reactors. Research is needed to improve the overall efficiency of this process to ensure it is a viable and sustainable option. Boise State University (BSU) worked in collaboration with others to synthesize, consolidate, and characterize complex surrogate oxide systems for use as advanced nuclear fuels. The objective of this work was to demonstrate the atmosphere affects on the final composition and density of the final fuel. The scope of this work included the identification of surrogate fuel compositions (target fuels, mixed oxide …
War Eagle Shopping Center, Megan Kautz, Jonathan Rocha, Peter Mckenzie, Clemente Salinas, David Mclenna
War Eagle Shopping Center, Megan Kautz, Jonathan Rocha, Peter Mckenzie, Clemente Salinas, David Mclenna
College of Engineering Poster Presentations
This senior design project is for the development of the War Eagle Shopping Center in Elmore county, Idaho. The shopping center is a part of the Elmore County comprehensive growth and development plan. The shopping center will be placed on 1,120 acres of land that is located fifteen miles northwest of Mountain Home, west of Interstate 84 and east of Simco Road. Our team will determine the required environmental and building permits, design the access and egress roadways, perform a nutrient pathogen study, design a wastewater treatment system, water supply systems, and a structure that includes two anchor stores, three …
Rooftop Ventilator Senior Design Project, Gavin Moody, Nick Thompson, Jon Flack
Rooftop Ventilator Senior Design Project, Gavin Moody, Nick Thompson, Jon Flack
College of Engineering Poster Presentations
The purpose of this research was to explore the energy savings between passive and active ventilation techniques and explore the feasability of a hybrid solar ventilator. The methodology that was employed for this research involved fluid flow analysis, thermal and heat transfer analysis and system modeling and controls. Additionally, machine design skills such as stress, failure and fatigue analysis were employed to ensure the longevity of the final design. Results can be placed into two categories. First, annual savings in terms of energy consumption for active versus passive ventilation will be displayed for various geographical areas. Second, a hybrid solar …
Shielded Cold Cathode Magnetron (Sccm), Tyler Rowe, Geoff Groff, Sonya Shawver, Brandon Wells
Shielded Cold Cathode Magnetron (Sccm), Tyler Rowe, Geoff Groff, Sonya Shawver, Brandon Wells
College of Engineering Poster Presentations
A magnetron is a vacuum device that uses the interaction of electrons and an electric field to generate microwaves. Magnetrons are often used for radar systems. Current magnetrons create electrons by heating a tungsten wire to the point that it emits electrons. These systems waste large amounts of energy and are difficult to control. A shielded cold cathode magnetron is a new magnetron design that has the potential to greatly improve the magnetron’s efficiency. These new magnetrons utilize arrays of gated field emitters to inject the electrons into the electric field. These field emitters must be protected from electron bombardment …