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Neural Network Diagnosis Of Malignant Melanoma From Color Images, Fikret ErçAl, C. Chawla, William V. Stoecker, Randy Hays Moss Jan 1993

Neural Network Diagnosis Of Malignant Melanoma From Color Images, Fikret ErçAl, C. Chawla, William V. Stoecker, Randy Hays Moss

Computer Science Technical Reports

Malignant melanoma is the deadliest form of all skin cancers. Approximately 32,000 new cases of malignant melanoma were diagnosed in 1991, with approximately 80 percent of patients expected to survive five years [1]. Fortunately, if detected early, even malignant melanoma may be treated successfully. Thus, in recent years, there has been a rising interest in the automated detection and diagnosis of skin cancer, particularly malignant melanoma [2]. In this paper, we present a novel neural network approach for the automated separation of melanoma from three other benign categories of tumors which exhibit melanoma-like characteristics. Our approach is based on devising …

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Computed Versus Observed Inelastic Seismic Low-Rise Rc Shear Walls, Franklin Y. Cheng, G. E. Mertz, M. S. Sheu, J. F. Ger Jan 1993

Computed Versus Observed Inelastic Seismic Low-Rise Rc Shear Walls, Franklin Y. Cheng, G. E. Mertz, M. S. Sheu, J. F. Ger

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

A technique of calculating inelastic deformation of low-rise shear walls having height-width ratios of 0.5 and 0.75 without boundary elements is presented with consideration of the coupling effect for bending and shear deformations as well as the deformation due to base rotation. An interaction surface of moment, shear, and curvature or moment, shear, and shear strain is developed. The deflections at crack, yield, and ultimate loadings can be calculated separately from bending and shear deformations, which are compared favorably with experimental results. The shear deformation is significant for the low-rise walls studied because the deformation due to bending deformation is …

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Behavior Of Arc Spot Weld Connections In Tension, Roger A. Laboube, Wei-Wen Yu Jan 1993

Behavior Of Arc Spot Weld Connections In Tension, Roger A. Laboube, Wei-Wen Yu

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Arc spot welds, commonly called puddle welds, are widely used for connecting cold-formed steel roof decks to their supporting members. These support members are typically hot-rolled steel beams or girders, or the top chord of open-web steel joists. A comprehensive experimental study of the tension strength of arc spot weld connections used to affix a cold-formed steel roof deck to its support member was conducted. The study investigated the key parameters that influence the connection strength: Steel thickness, tensile strength, and ductility; type of weld process, automatic or manual; cross section of the roof deck; loading condition, symmetrical or eccentric …

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Postbuckling And Hysteresis Models Of Open-Web Girders, Jeng Fuh Ger, Franklin Y. Cheng Jan 1993

Postbuckling And Hysteresis Models Of Open-Web Girders, Jeng Fuh Ger, Franklin Y. Cheng

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

The paper presents analytical studies of hysteretic behavior of open-web girders with angle web members. The partial inelasticity of the member cross section is traced using finite segment formulation with stress-strain control. A member is divided into a number of segments, and, for each segment, the cross section is divided into many small elements, which allows the inelastic deformation of the member to be modeled. Therefore, member stiffness is established for various inelastic deformation stages. The eccentricities and initial imperfections of web members are considered in the analysis. Good agreement between experimental and present analytical results was found for individual …

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Postbreakage Behavior Of Heat Strengthened Laminated Glass Under Wind Effects, Chris P. Pantelides, Amy D. Horst, Joseph E. Minor Jan 1993

Postbreakage Behavior Of Heat Strengthened Laminated Glass Under Wind Effects, Chris P. Pantelides, Amy D. Horst, Joseph E. Minor

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Results of a full-scale experimental investigation into the post breakage behavior of heat-strengthened laminated glass subjected to windstorm effects are presented. Two different interlayer constructions and two different glazing configurations are examined. The two interlayer constructions are a PVB polymer and a PVB/PET/PBV composite polymer. The two glazing configurations are a conventional dry glazed system and an unconventional system with a silicone anchor bead. Two test criteria are established that relate to effects of a severe windstorm. The first criterion addresses impact with windborne debris; the second defines a wind-load spectrum that represents a severe windstorm of a 4-hr duration. …

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Structural Behavior Of Architectural Laminated Glass, R. A. Belir, Joseph E. Minor, H. S. Norville Jan 1993

Structural Behavior Of Architectural Laminated Glass, R. A. Belir, Joseph E. Minor, H. S. Norville

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Experimental and theoretical investigations conducted over a 20-year time period by several investigators provide sufficient data and information to define, for practical engineering purposes, the behavior of architectural laminated glass under lateral pressures. Investigations included definitions of material properties, theoretical stress analyses, experimental stress analyses, and destructive tests involving monolithic, laminated, and "layered" glass plates of several geometries. The preponderance of data and information indicate that: (1) Architectural laminated glass behaves in a manner similar to monolithic glass of the same nominal thickness under short-term lateral pressures (representative of wind loads) at and below room temperature; (2) the temperature at …

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Permeation Of Several Gases Through Elastomers, With Emphasis On The Deuterium/Hydrogen Pair, M. (Mark) W. Fitch, W. J. Koros, R. L. Nolen, J. R. Carnes Jan 1993

Permeation Of Several Gases Through Elastomers, With Emphasis On The Deuterium/Hydrogen Pair, M. (Mark) W. Fitch, W. J. Koros, R. L. Nolen, J. R. Carnes

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

The Diffusion and Permeation Coefficients for He, H2, D2, O2, and N2 in a Variety of Elastomers Were Measured by Simple Manometric Methods. the Elastomers Studied Were Butyl Rubber; Hypalon® 40 and 45; Viton® E60 and GF; Hydrin® 100 and Filled Hydrin® 100; Kraton® G, FG, and KG VTEOS; EPDM; Epoxidized Natural Rubber; and Neoprene. Consistent with Earlier Studies, Elastomers with Higher Glass Transition Temperatures Exhibited Lower Diffusion Coefficients. the Ratio of Diffusion Coefficients of the Hydrogen Isotope Pair Differed from the Purely Molecular‐weight‐based Prediction. Deuterium's Slightly Smaller Size Relative to Hydrogen is Consistent with Observed Deviations from the Molecular‐weight‐based …

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Mineralization And Uptake Of Triazine Pesticide In Soil-Plant Systems, Dhileepan R. Nair, Joel G. (Gerard) Burken, Louis A. Licht, Jerald L. Schnoor Jan 1993

Mineralization And Uptake Of Triazine Pesticide In Soil-Plant Systems, Dhileepan R. Nair, Joel G. (Gerard) Burken, Louis A. Licht, Jerald L. Schnoor

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Deep-Rooted Trees Planted as a Buffer Zone Can Intercept Runoff and Eroded Sediments, Thus Reducing Non-Point-Source Pollution Due to Agricultural Chemicals. in This Study, Populus Sp. Were Grown in Bioreactors with an Agricultural Soil (Silt-Loam) and in a Silica-Sand Media; Both Were Spiked with 14C Uniformly Ring-Labeled Atrazine. the Plants Took Up over 11% of the 14C Labeled Atrazine Applied to the Silt-Loam Soil and over 91% of that Applied to the Silica Sand Media, with the Majority of the 14C Accumulating as Nonphytotoxic Metabolites in the Leaves. Research Suggests that, in Addition to Nutrient Uptake, Poplar …

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Modeling Of Intra-Cell Defects In Cmos Sram, Waleed K. Al-Assadi, Y. K. Malaiya, A. P. Jayasumana Jan 1993

Modeling Of Intra-Cell Defects In Cmos Sram, Waleed K. Al-Assadi, Y. K. Malaiya, A. P. Jayasumana

Electrical and Computer Engineering Faculty Research & Creative Works

The effect of defects within a single cell of a static random access memory (SRAM) is examined. All major types of faults, including bridging, transistor stuck-open and stuck-on, are examined. A significant fraction of all faults cause high IDDQ values to be observed. Faults leading to inter-cell coupling are identified.

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Artificial Intelligence Applied To Detection Of Melanoma, Arve Kjoelen, Scott E. Umbaugh, William V. Stoecker, Randy Hays Moss Jan 1993

Artificial Intelligence Applied To Detection Of Melanoma, Arve Kjoelen, Scott E. Umbaugh, William V. Stoecker, Randy Hays Moss

Electrical and Computer Engineering Faculty Research & Creative Works

No abstract provided.

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Flexural Behavior Of Web Elements With Openings, Roger A. Laboube, Wei-Wen Yu, Ming-Yang Shan Jan 1993

Flexural Behavior Of Web Elements With Openings, Roger A. Laboube, Wei-Wen Yu, Ming-Yang Shan

CCFSS Library (1939 - present)

No abstract provided.

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Simulation De L'Interaction Entre Le Voilement Local Et Les Modes Globaux D'Instabilite Des Profils A Froid Par Une Combinaison De La Methode Des Largeurs Effectives Et De L'Element Fini Non-Lineaire De Poutre Spatiale, Luiz Felippe Estrella Jr. Jan 1993

Simulation De L'Interaction Entre Le Voilement Local Et Les Modes Globaux D'Instabilite Des Profils A Froid Par Une Combinaison De La Methode Des Largeurs Effectives Et De L'Element Fini Non-Lineaire De Poutre Spatiale, Luiz Felippe Estrella Jr.

CCFSS Library (1939 - present)

The objective of this thesis is the study of the stability of cold-formed thin-walled steel members. The interaction between global instability and local buckling of the profile walls has a reducing effect on the collapse load. The aim is to develop a numerical tool able to predict not only the collapse load, but also the equilibrium path. With this aim in view, the non-linear spatial beam tinite element recently developed by Vincent de Ville in Liege University was chosen for this purpose. The steel member is considered as an association of flat plates and corners. Local buckling is modeled by …

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Decision-Support Tools For Transferring Am/Fm/Gis To Small Communities, Steven W. Mccrary, Colin Othniel Benjamin, Peter J. Schmidt Jan 1993

Decision-Support Tools For Transferring Am/Fm/Gis To Small Communities, Steven W. Mccrary, Colin Othniel Benjamin, Peter J. Schmidt

Engineering Management and Systems Engineering Faculty Research & Creative Works

This paper examines several decision-support tools for transferring AM/FM/GIS technology to small communities. The term Computer-Assisted Spatial Information Systems (CASIS) provides a basis for a systematic categorization and definition of AM/FM/GIS systems that will serve to enhance small communities' understanding of these technologies for future decisions. The acronym CASIS includes such areas as database-management systems, automated mapping/facilities management/geographic information systems (AM/FM/GIS), and computer-aided drafting (CAD). Further, this paper reports the highlights of a survey that assesses the theory-practice gap in AM/FM/GIS usage among very small local government agencies. The survey uncovered an existing theory-practice gap: A, slow rate of system …

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Robust Control Of Flexible Structures Using Multiple Shape Memory Alloy Actuators, R. Lashlee, R. Butler, Vittal S. Rao, F. Kern Jan 1993

Robust Control Of Flexible Structures Using Multiple Shape Memory Alloy Actuators, R. Lashlee, R. Butler, Vittal S. Rao, F. Kern

Electrical and Computer Engineering Faculty Research & Creative Works

The design and implementation of control strategies for large, flexible smart structures presents challenging problems. To demonstrate the capabilities of shape-memory-alloy actuators, we have designed and fabricated a three-mass test article with multiple shape-memory-alloy (NiTiNOL) actuators. The force and moment actuators were implemented on the structure to examine the effects of control structure interaction and to increase actuation force. These SMA actuators exhibit nonlinear effects due to dead band and saturation. The first step in the modeling process was the experimental determination of the transfer function matrix derived from frequency response data. A minimal state space representation was determined based …

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Lightning Arrester Failure And Ferroresonance On A Distribution System, L. J. Bohmann, J. Mcdaniel, Eldon Keith Stanek Jan 1993

Lightning Arrester Failure And Ferroresonance On A Distribution System, L. J. Bohmann, J. Mcdaniel, Eldon Keith Stanek

Electrical and Computer Engineering Faculty Research & Creative Works

Since 1987 the Upper Peninsula Power Company (UPPCO) has been experiencing a large number of lightning arrester failures on a portion of their distribution system in southern Marquette County, Michigan. It was in the area of the Navy's Extremely Low Frequency (ELF) antenna where the distribution system had been recently reconfigured so that the transformers were connected line-to-line in order to eliminate interference from the antenna. A study was done which determined that the system was susceptible to ferro resonance during single line faults under lightly loaded conditions and that the overvoltage's experienced could be causing the lightning arrester failures. …

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Efficient Simulation Of Multicarrier Digital Communication Systems In Nonlinear Channel Environments, Kevin W. Schneider, William H. Tranter Jan 1993

Efficient Simulation Of Multicarrier Digital Communication Systems In Nonlinear Channel Environments, Kevin W. Schneider, William H. Tranter

Electrical and Computer Engineering Faculty Research & Creative Works

The effectiveness of computer simulation as a tool for the design and analysis of communication systems is often limited by the long execution times required for many simulations. When simulating multicarrier digital communication systems operating over nonlinear channels, the required high sampling rate contributes significantly to long execution times. A new method that reduces the sampling rate of simulations of such systems is developed. This Partial Sum of Products (ParSOP) method reduces the sampling rate by generating only the intermodulation products that lie in a frequency band of interest. The ParSOP method requires that the bandpass nonlinearity be represented by …

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Advanced Graphics Zoom In On Operations, Max Darwin Anderson, Hardy J. Pottinger, C. M. Schroeder Jan 1993

Advanced Graphics Zoom In On Operations, Max Darwin Anderson, Hardy J. Pottinger, C. M. Schroeder

Electrical and Computer Engineering Faculty Research & Creative Works

No abstract provided.

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Battery Energy Storage Technologies, Max Darwin Anderson, Dodd S. Carr Jan 1993

Battery Energy Storage Technologies, Max Darwin Anderson, Dodd S. Carr

Electrical and Computer Engineering Faculty Research & Creative Works

Battery energy storage systems, comprising lead-acid batteries, power conversion systems, and control systems, are in commercial operation around the world. They are used by three main groups: power generating utilities; power distributing utilities; and major power consumers (such as electric furnace foundries). The principal advantages of battery energy storage systems to generating utilities include load leveling; frequency control; spinning reserve; modular construction; convenient siting; no emissions; and investment deferral for new generation and transmission equipment. Power distributing utilities and major power consumers can avoid costly demand changes by discharging their batteries at peak periods and then recharging with lower cost …

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Analog Chips And Intelligent Vehicles, J. G. Harris Jan 1993

Analog Chips And Intelligent Vehicles, J. G. Harris

Electrical and Computer Engineering Faculty Research & Creative Works

Numerous digital-based sensor systems have been demonstrated on intelligent vehicles but only the most rudimentary experiments have been attempted with analog VLSI chips in real-world environments. The most significant factor in the choice between analog and digital approaches to sensory processing in intelligent vehicles will be the cost of mass production. If analog sensors can be designed with enough speed, resolution and accuracy to solve sensory processing tasks, then the low-cost of mass production ensures that analog circuits will be the technology of choice for future generations of smart sensors. Current analog VLSI sensors do not have enough resolution and …

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Use Of Storage Elements As Primitives For Modeling Faults In Synchronous Sequential Circuits, Waleed K. Al-Assadi, Y. K. Malaiya, A. P. Jayasumana Jan 1993

Use Of Storage Elements As Primitives For Modeling Faults In Synchronous Sequential Circuits, Waleed K. Al-Assadi, Y. K. Malaiya, A. P. Jayasumana

Electrical and Computer Engineering Faculty Research & Creative Works

No abstract provided.

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A Fast Converging, Low Complexity Adaptive Filtering Algorithm, Steven L. Grant Jan 1993

A Fast Converging, Low Complexity Adaptive Filtering Algorithm, Steven L. Grant

Electrical and Computer Engineering Faculty Research & Creative Works

This paper introduces a new adaptive filtering algorithm called fast affine projections (FAP). Its main attributes include RLS (recursive least squares) like convergence and tracking with NLMS (normalized least mean squares) like complexity. This mix of complexity and performance is similar to the recently introduced fast Newton transversal filter (FNTF) algorithm. While FAP shares some similar properties with FNTF it is derived from a different perspective, namely the generalization of the affine projection interpretation of NLMS. FAP relies on a sliding windowed fast RLS (FRLS) algorithm to generate forward and backward prediction vectors and expected prediction error energies. Since sliding …

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An Optoelectronic Implementation Of The Adaptive Resonance Neural Network, Donald C. Wunsch, T. P. Caudell, R. J. Marks, R. A. Falk, C. David Capps Jan 1993

An Optoelectronic Implementation Of The Adaptive Resonance Neural Network, Donald C. Wunsch, T. P. Caudell, R. J. Marks, R. A. Falk, C. David Capps

Electrical and Computer Engineering Faculty Research & Creative Works

A solution to the problem of implementation of the adaptive resonance theory (ART) of neural networks that uses an optical correlator which allows the large body of correlator research to be leveraged in the implementation of ART is presented. The implementation takes advantage of the fact that one ART-based architecture, known as ART1, can be broken into several parts, some of which are better to implement in parallel. The control structure of ART, often regarded as its most complex part, is actually not very time consuming and can be done in electronics. The bottom-up and top-down gated pathways, however, are …

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Faulty Behavior Of Storage Elements And Its Effects On Sequential Circuits, Waleed K. Al-Assadi, Y. K. Malaiya, A. P. Jayasumana Jan 1993

Faulty Behavior Of Storage Elements And Its Effects On Sequential Circuits, Waleed K. Al-Assadi, Y. K. Malaiya, A. P. Jayasumana

Electrical and Computer Engineering Faculty Research & Creative Works

It is often assumed that the faults in storage elements (SEs) can be modeled as output/input stuck-at faults of the element. They are implicitly considered equivalent to the stuck-at faults in the combinational logic surrounding the SE cells. Transistor-level faults in common SEs are examined here. A more accurate higher level fault model for elementary SEs that better represents the physical failures is presented. It is shown that a minimal (stuck-at) model may be adequate if only modest fault coverage is desired. The enhanced model includes some common fault behaviors of SEs that are not covered by the minimal fault …

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Photovoltaic-Powered Water Pumping-Design, And Implementation: Case Studies In Wyoming, Badrul H. Chowdhury, S. Ula, K. Stokes Jan 1993

Photovoltaic-Powered Water Pumping-Design, And Implementation: Case Studies In Wyoming, Badrul H. Chowdhury, S. Ula, K. Stokes

Electrical and Computer Engineering Faculty Research & Creative Works

A photovoltaic-powered water pumping project comprising of several rural electric cooperatives and their customers is described in detail. A number of remote water pumping installations in the state of Wyoming, USA, are currently operating as a result of this project. The design, installation and performance monitoring of these systems are discussed. In general, it can be stated that PV-powered water pumping in this state has been a cost-effective alternative to distribution line extension or other conventional means of water pumping. Customer satisfaction, in terms of functional adequacy and low maintenance requirements of these systems, is high. The benefit for the …

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A New Technique To Decompose Closely Spaced Interface And Bulk Trap States Using Temperature Dependent Pulse-Width Deep Level Transient Spectroscopy Method: An Application To Pt/Cds Photodetector, C. W. Wang, Cheng-Hsiao Wu, Jack L. Boone Jan 1993

A New Technique To Decompose Closely Spaced Interface And Bulk Trap States Using Temperature Dependent Pulse-Width Deep Level Transient Spectroscopy Method: An Application To Pt/Cds Photodetector, C. W. Wang, Cheng-Hsiao Wu, Jack L. Boone

Electrical and Computer Engineering Faculty Research & Creative Works

A novel method is presented here to experimentally decompose nonexponential capacitive transients into the appropriate components from the closely spaced deep trap states. Using temperature dependent pulse-width deep level transient spectroscopy (TDP-DLTS) technique, we show for the first time that two bulk trap states and one continuously distributed interface states in (Pt/CdS) photodiodes can be successfully separated. The basic principle is to set the applied pulse width to follow an averaged temperature-dependent capture time constant and divide the DLTS spectrum. In the example of Pt/CdS photodiodes, we show that all physical parameters including thermal activation energies, capture cross sections, and …

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Emc Applications Of Emap-2: A 3d Finite Element Modeling Code, Todd H. Hubing, M. Ali Jan 1993

Emc Applications Of Emap-2: A 3d Finite Element Modeling Code, Todd H. Hubing, M. Ali

Electrical and Computer Engineering Faculty Research & Creative Works

EMAP-2, a 3-D finite element modeling code that can be used to model simple printed circuit board configurations, is discussed. It is a true full-wave field solver designed to be used for education or research. EMAP-2 is written in the C programming language. The code, its capabilities, and its limitations are described. Two examples illustrate how the code can be applied to problems of particular interest to EMC (electromagnetic compatibility) engineers.

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Dual Purpose Fuze, Paul Nicholas Worsey Jan 1993

Dual Purpose Fuze, Paul Nicholas Worsey

Mining Engineering Faculty Research & Creative Works

A dual purpose fuze for a projectile which can activate a quantity of material selected from a group including high explosive, low explosive, propellant and pyrotechnic compounds. The fuze includes a charge holder having a socket therein facing the quantity of material to be activated. A fuze charge located in the socket has a depression in it so formed as to cause the fuze charge to explode in a jet directed outwardly from the socket of sufficiently high energy to activate a high explosive in a high explosive projectile, the fuze charge being sufficiently small to prevent rupture of containment …

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Blast Plug And Stemming Construction For Blast Holes, Paul Nicholas Worsey Jan 1993

Blast Plug And Stemming Construction For Blast Holes, Paul Nicholas Worsey

Mining Engineering Faculty Research & Creative Works

A plug for use in stemming a blast hole having an explosive charge therein. The plug comprises a wedge member and a stabilizing structure on the wedge member. The wedge member tapers in an outward direction from a relatively wide base to a relatively narrow end and has a central axis extending endwise with respect to the wedge member. The stabilizing structure extends generally axially with respect to the wedge member from adjacent the base of the wedge member. The plug is to be positioned in the blast hole with the base of the wedge member facing inwardly toward the …

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Trapping-To-Percolation Transition In The Hopping Diffusion Of Substitutionally Disordered Solids With A Binary Energy Distribution, Paul Ernest Parris, B. D. Bookout Jan 1993

Trapping-To-Percolation Transition In The Hopping Diffusion Of Substitutionally Disordered Solids With A Binary Energy Distribution, Paul Ernest Parris, B. D. Bookout

Physics Faculty Research & Creative Works

We consider charge carriers that undergo nearest-neighbor hopping among the sites of a binary random lattice, each site of which is associated with one of two possible energies E1 or E2. A general and recently observed feature of this problem not predicted by previous treatments of disordered hopping models is a crossover between trap-limited conduction and percolation. We introduce new energy-projected equations of motion whose solutions reveal the deep conductivity minimum associated with this phenomenon, and compare the results predicted to numerical simulations.

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The Rollamo 1993, University Of Missouri - Rolla Jan 1993

The Rollamo 1993, University Of Missouri - Rolla

Yearbooks

No abstract provided.

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