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Full-Text Articles in Entire DC Network
Model Calculational Approach To The Conformation Of Adsorbed Polypeptide Fragments, Timothy J. Mckeon
Model Calculational Approach To The Conformation Of Adsorbed Polypeptide Fragments, Timothy J. Mckeon
Opportunities for Undergraduate Research Experience Program (OURE)
The focus of the paper is to examine possible conformational changes of peptides when placed in the presence of a poly-synthetic material. A major concern in the pharmaceutical industry is the loss of potency of polypeptide drug products during processing, packaging and storage. An example of this is polymer syringes being used in place of glass ones. The effect is that some protien-derived products experience structural changes due to contact with the polymer. This is otherwise known as surface denaturation. In order to understand the energetics of interfacial polypeptide systems, a calculational approach was used via the program Alchemy. The …
Vehicle Routing Using The Sweep Algorithm In Parallel, Jana G. Beattie, Carol L. Spelman
Vehicle Routing Using The Sweep Algorithm In Parallel, Jana G. Beattie, Carol L. Spelman
Opportunities for Undergraduate Research Experience Program (OURE)
This paper presents a parallel version of the Sweep Algorithm, a heuristic solution to the smgle-termma] vehicle routing problem The Sweep Algorithm uses a duster-first route-second approach in finding a near-optimal set of routes. The clusters of delivery points are formed by using the terminal as the center and moving around it m a sweeping fashion After a duster is defined, the route is found with a traveling salesperson algorithm.
The parallel version begins the sweep at different angles and performs both forward and backward sweeps. Each node handles a sweep and returns information concerning total distance traveled to the …
The Edge Strength Of Annealed And Heat-Strengthened Glass, Gregory P. Sallee
The Edge Strength Of Annealed And Heat-Strengthened Glass, Gregory P. Sallee
Opportunities for Undergraduate Research Experience Program (OURE)
Sadly, up until now, very little research has been conducted in the field of glass window strength. The purpose of this research, therefore, is to explore the topic of glass window strength such that we might offer some conclusive evidence as to the probable in-situ performance of structural windows. Our intention is to examine the specific phenomenon of thermally- induced stress and its effect on glass strength. J. G. Croll explains the existence of this well-documented problem. "Whenever a structure is subjected to a varying temperature distribution, or where it is prevented from free expansion, stresses will be induced that …
Simulated Annealing On The Composite Graph Coloring Problem, Kevin Alons
Simulated Annealing On The Composite Graph Coloring Problem, Kevin Alons
Opportunities for Undergraduate Research Experience Program (OURE)
The composite graph is a finite undirected graph G with no loops and no multiple edges and with positive integers associated with each vertex of G. The number of integers associated with each vertex is the chromaticity of the vertex. The chromatic degree of a vertex v is the sum of the chromaticity of v and the chromaticities of all vertices adjacent to v. The graph G is a v-composite graph if the chromaticities are not equal.
Identity Authentication Based On Keystroke Latencies Using Neural Networks, Angela Lammers, Sharon Langenfeld
Identity Authentication Based On Keystroke Latencies Using Neural Networks, Angela Lammers, Sharon Langenfeld
Opportunities for Undergraduate Research Experience Program (OURE)
Most computer security systems verify the identity of a user through objects in the user's possession such as keys or magnetic cards, or through knowledge the user has, such as a password or PIN number. There are, however, two other methods of user verification, which have as yet received little or no attention. There has been some work done on the third method, recognition of physiological patterns (such as finger prints, retinal patterns, or voice patterns), but this work has been limited and requires expensive hardware to implement. The final method of user verification is through actions such as signature …
Bundled Cable Parameters And Their Impact On Emi Measurement Repeatability, Deanna L. Weil
Bundled Cable Parameters And Their Impact On Emi Measurement Repeatability, Deanna L. Weil
Opportunities for Undergraduate Research Experience Program (OURE)
This research project was 99% experimental, therefore, not many theoretical ideas will be presented. The main idea behind the project was centered around cable bundling. The effect of cable bundling using analytical measurements and data from a network analyzer was investigated.
Computer Visualization Of Irrotational Flow Over Bluff And Streamlined Bodies, Nora Okong' O
Computer Visualization Of Irrotational Flow Over Bluff And Streamlined Bodies, Nora Okong' O
Opportunities for Undergraduate Research Experience Program (OURE)
Computer programs were developed to visualize irrotational flow over bluff bodies (circular cylinders and half-bodies) and streamlined bodies (elliptical cylinders and airfoils). The method of superposition of flows was used, with stream functions or complex velocity potentials for fundamental flows being added to obtain the flows over the bodies. For the flow over the circular cylinders, half-bodies and elliptical cylinders, the stream function was calculated directly. The flow over the airfoil was obtained by Joukowski mapping of the imaginary part of the complex velocity potential for flow over a circular cylinder.
The programs developed will be valuable learning tools for …
Development Of A Learjet Model 24d For The Umr Flight Simulator, Richard Stigall
Development Of A Learjet Model 24d For The Umr Flight Simulator, Richard Stigall
Opportunities for Undergraduate Research Experience Program (OURE)
A flight simulator was recently developed at the University of Missouri-Rolla for a single engine aircraft. The need soon arose for a higher performance aircraft. After exploring several possibilities, a Learjet Model 24D was chosen to include the high performance aircraft.
The purpose of this project was to develop a model for the Learjet 24D. This was accomplished by examining the computer code previously written and determining the changes needed. The code for the simulation is located in various subroutines. Each subroutine was analyzed to determine if changes needed to be made. When a modification was needed, appropriate methods were …
Computer Modeling Of A Liquid Fuel Spray, Clemin R. Goodin Jr.
Computer Modeling Of A Liquid Fuel Spray, Clemin R. Goodin Jr.
Opportunities for Undergraduate Research Experience Program (OURE)
The initial phase of this project involved manipulation of a lengthy FORTRAN computer code named "Kirwan." The code originated from England many years ago and was transferred to UMR by Dr. Drallmeier. Dr. Drallmeier had the code on a series of 5.25 inch floppy diskettes and the objective of the project was to load the code on to the Apollo computer system and be able to use it....The second phase of the project was begun in early November 1990 and is currently ongoing. The objective of this project is to predict "Rosin-Rammler" (RR) distribution equations for a fuel spray, given …
Aerosol Particle Bounding In Cascade Impactors, Bisma Husen
Aerosol Particle Bounding In Cascade Impactors, Bisma Husen
Opportunities for Undergraduate Research Experience Program (OURE)
Particle deposition characteristics were observed from the aerosol sampling results of a UNICO cascade impactor. A simple model of particle motion combined with Hiemenz flow of stagnation flow on a flat plate were developed and discussed.
Both results and analysis were compared to recent models on particle bouncing errors or secondary deposition which included vortices formation around the edge of the slot, back spin (Magnus effect), and hydrodynamic conditions of the particles. The analysis was limited to a laminar inviscid and incompressible case. The main obstacle in the observation was the fact that impactor nozzles were unsymmetrical to a considerable …
Fourier Transform Infrared (Ftir) Spectroscopy Analysis Of Combustion Aerosol, Gary Jacquin
Fourier Transform Infrared (Ftir) Spectroscopy Analysis Of Combustion Aerosol, Gary Jacquin
Opportunities for Undergraduate Research Experience Program (OURE)
In conjunction with my co-op program at McDonnell-Douglas, my current OURE project is the analysis of combustion aerosols using Fourier Transform Infrared (FTIR) Spectroscopy. Aerosol science is a very important field as it is concerned with atmospheric chemistry, atmospheric physics, climate, public health, and environmental issues.
In the Cloud and Aerosol Sciences Laboratory (CASL) at UMR, combustion aerosols are generated by an in-house designed torch or burner. The fuels, JP4 and JP5, are provided by McDonnell-Douglas. Some other commercial fuels are also used. The primary objective of my OURE project was to generate and collect combustion aerosols for chemical analysis. …
Nonlinear Dynamics And The Lorenz Water Wheel, Richard Margis
Nonlinear Dynamics And The Lorenz Water Wheel, Richard Margis
Opportunities for Undergraduate Research Experience Program (OURE)
Undoubtedly one of the most exciting frontiers in physics today is the study of nonlinear systems, more popularly called chaos. Chaos is the key to many time-dependent processes in as varied fields as meteorology (such as weather modeling), mechanics (the three-body problem in gravitational fields), and economics (prediction of trends in the stock market).
Synthesis And Characterization Of An 18-Membered Macrocyclic Ligand Containing 2,2-Biimidazole For Selective Binding Of Transition Metal Ions, Mark Barnett
Opportunities for Undergraduate Research Experience Program (OURE)
A description of the synthetic approach to the preparation of an 18 membered macrocyclic ligand containing 2/2'-biimidazole is presented. A diol derivative of 2,2'-biimidazole is tosylated with p-toluene sulfonyl chloride making it susceptible to bimolecular substitution with a disodium salt of tetratosylated triethylenetetraamine. The final desired product is an 18N6 macrocycle, 4,7-(l,l'-(2,2'-biimidazolo))-l,4,7,10,13,16-hexaazacyclooctadecane, potentially capable of binding transition metal ions in various combinations with three chelating sites. Initial characterization includes NMR and IR spectroscopic analysis.
Using Software To Demonstrate Kinematics Of Gear Sets, John F. Hall
Using Software To Demonstrate Kinematics Of Gear Sets, John F. Hall
Opportunities for Undergraduate Research Experience Program (OURE)
The research was done in the area of developing software which could be used to demonstrate the motion of gears. To demonstrate this motion involved learning about programming using graphics. Engineering skills were used in the programming in various ways. One way was in developing and implementing the equations and theory. The more critical engineering aspect of this project is in determining what is effective in demonstrating the kinematic principles associated with gear sets.
The programs will be a helpful aid in showing students what is happening with the motion of gear sets. Not only will instructors be allowed to …
Enantiomeric Separation By Cloud Point Precipitation Of Cyclodextrins, Deanna L. Schmid
Enantiomeric Separation By Cloud Point Precipitation Of Cyclodextrins, Deanna L. Schmid
Opportunities for Undergraduate Research Experience Program (OURE)
Certain cyclodextrins exhibit a diminishing solubility in water when heated. This phenomena of cloud point precipitation in conjunction with cyclodextrin's ability to form an inclusion complex with many compounds, can be used as a method of chemical separation. These cyclodextrins can be removed from the solution after precipitation by a hot filtration technique and the remaining solution analyzed by HPLC. Enantiomeric separations, concentration of compounds and removal of hazardous organic materials are all possible applications of cloud point extraction using cyclodextrins.
Control And Data Reduction Software For Umr Neutron Spectrometer, Matthew K. Mclaughlin
Control And Data Reduction Software For Umr Neutron Spectrometer, Matthew K. Mclaughlin
Opportunities for Undergraduate Research Experience Program (OURE)
A double-scatter time-of flight neutron spectrometer has been obtained by the Nuclear Engineering department of the University of Missouri-Rolla (UMR). As this device was an experimental prototype which was never brought to full operation, the chance to work with two of the original builders of the spectrometer at EG&G Idaho was an excellent opportunity. Part of the work being done with the detector is the development of a PC-based software package for machine control, data acquisition, and data reduction. It is this part of the project which has been supported by UMR’s Opportunities for Undergraduate Research Experience (OURE) program.
Implementation Of The Articulated Total Body (Atb) Model On An Apollo Workstation, M. F. Laudon
Implementation Of The Articulated Total Body (Atb) Model On An Apollo Workstation, M. F. Laudon
Opportunities for Undergraduate Research Experience Program (OURE)
The Articulated Total Body Model (ATB) is used for predicting gross segmented body response in various dynamic environments. The ATB computer program, originally written by the Department of Transportation as a Crash Victim Simulation (CVS) program, was later modified by the Calspan Corporation and More recently by the Armstrong Aerospace Medical Research Laboratory (AAMRL) to allow for aerodynamic force applications, harness belt capabilities and hyper-ellipsoidal graphical display of the modeled segments. The ATB model has been successfully used to investigate gross human body responses to bodies placed in such complex dynamic environments as high-speed aircraft ejection. This ATB model is …
Mathematica Demonstrations For Calculus, Bryan Krueger
Mathematica Demonstrations For Calculus, Bryan Krueger
Opportunities for Undergraduate Research Experience Program (OURE)
The objective of this research was to generate useful classroom demonstrations of fundamental Calculus concepts. Herein are the code listings of two Mathematica "programs." The first displays individual plots of two dimensional Taylor Series approximations. The second set of code creates a TNB frame on a three dimensional space curve. Folowing this introduction is a complete listing of each "program" along with an example of its function.
Influence Of The Mcdowell Sanitary Landfill On Groundwater Quality, Phelps County, Missouri, Christine E. Bough
Influence Of The Mcdowell Sanitary Landfill On Groundwater Quality, Phelps County, Missouri, Christine E. Bough
Opportunities for Undergraduate Research Experience Program (OURE)
This is a case study of the groundwater quality near the McDowell Sanitary Landfill in Phelps County, Missouri. The landfill is located in section 21 of T37N R8W off of Missouri State Highway CC. This landfill is a near surface solid waste disposal facility above the groundwater table located in an abandoned area of a rock quarry. The thickness, lithology, and structure of the material beneath the landfill, and the design of the landfill itself, will influence the time of contaminant transport and degree of modification in the event that leachate escapes the landfill. Among the more important topographic features …
Attitudes Toward Animal Research Among Contemporary Psychologists, Carla A. Huskey
Attitudes Toward Animal Research Among Contemporary Psychologists, Carla A. Huskey
Opportunities for Undergraduate Research Experience Program (OURE)
The present research examined the attitudes of a national sample of contemporary professional psychologists concerning the use of animals in research. A survey was developed similar to that used by Gallup and Beckstead (1988). Additionally, psychologists were asked about their agreement with the two fundamental philosophical positions outlined by Herzog (1990): the principle of equality and the principle of specific rights.
Combustion Aerosol Morphology, Ronald P. Holland
Combustion Aerosol Morphology, Ronald P. Holland
Opportunities for Undergraduate Research Experience Program (OURE)
The following report entitled Carbon Aerosol Morphology is the result of research done through the University of Missouri--Rolla Graduate School program entitled Opportunities for Undergraduate Research Experience (OURE). My appointment was for the Summer - 1990 with the Cloud and Aerosol Sciences Laboratory, Department of Physics, located in Norwood Hall. The goal of this appointment was to study the size and morphology of combustion aerosols whose characteristics are dependent on the history of the particle, e.g. exposure to chemicals, scavenging effects, and other time dependent factors. Computer image processing software is available in the department for this purpose.
A Computer Graphics Program For Displaying Water Molecules On A Dn3500 Apollo Workstation, Michael A. Stuller
A Computer Graphics Program For Displaying Water Molecules On A Dn3500 Apollo Workstation, Michael A. Stuller
Opportunities for Undergraduate Research Experience Program (OURE)
A computer graphics program is developed for displaying water molecule configurations on the screen of a DN3500 Apollo workstation. The motivation was to generate a fast display of output from molecular dynamics or Monte Carlo computer simulations. Input to the program consists of a listing of the Cartesian coordinates of the atomic constituents of the molecules. Options in the program include: 1) number of molecules; 2) plot size; 3) atomic radii; 4) superposition of substrate atomic positions; 5) viewing angle; and 6) color-coded and/or numbered atoms. The program is written in Fortran.
Mathematica Calculus Illustrations, Jeremy Squires
Mathematica Calculus Illustrations, Jeremy Squires
Opportunities for Undergraduate Research Experience Program (OURE)
The purpose of this project was to create a collection of computer illustrations that would represent certain concepts of calculus. These illustrations were to be performed on a calculus based program called Mathematica. Another of the underlying objectives of this project was the potential of using these illustrations as classroom demonstrations. These demonstrations might convey an idea that is not easily understood on just verbal communication alone.
Establishment Of A Phase/Doppler Particle Analyzer For Two-Phase Flow Experiments, J. L. Burget
Establishment Of A Phase/Doppler Particle Analyzer For Two-Phase Flow Experiments, J. L. Burget
Opportunities for Undergraduate Research Experience Program (OURE)
The accurate measurement of liquid spray drop size and velocity is important in a variety of applications. These applications include agricultural sprays, furnaces, spark ignition and compression ignition engines, gas turbines, and a variety of industrial processes. Because of the need to improve combustion efficiency and minimize soot and other harmful emissions, one of the most active areas of research is fuel spray combustion. Quantitative measurements of the vapor phase in fuel sprays is vital to the understanding of spray dynamics and the operation of combustion devices.
There are various measurement techniques available to measure vapor phase characteristics in a …
Process For Scanning Photographic Slides Of Laser Light Scattering With A Transmission Densitometer, Don Newburry
Process For Scanning Photographic Slides Of Laser Light Scattering With A Transmission Densitometer, Don Newburry
Opportunities for Undergraduate Research Experience Program (OURE)
Non-symmetric variations in photographic slides of polarized laser light scattering experimental results are difficult to see. This paper explains a process developed for measuring the light density at points throughout the slide area using a transmission densitometer, so an accurate description of the laser light scattering may be obtained. A slide was tested using the described process and the results are presented. The results turned out well, but there were some errors introduced by the instability of the densitometer and by human error in reading the chart recorder output.
The Electrochemical Characterization Of Ferrocene As A Guest Molecule In The Presence Of Ss-Cydodextrin, Anne T. Roberson
The Electrochemical Characterization Of Ferrocene As A Guest Molecule In The Presence Of Ss-Cydodextrin, Anne T. Roberson
Opportunities for Undergraduate Research Experience Program (OURE)
This experiment involves the development of electrochemical experimental methods for the determination of the oxidation/reduction potentials of a guest ferrocene complex (C10H10Fe) hosted by ß-cyclodextrin. The project was conducted so that the specific interaction of two molecules forming a unique inclusion compound can be used as a model for rapid analysis of other small molecules. In principle, the study is based on the expected equilibrium interaction of the iron compound with ß-cyclodextrin resulting in a complexed and an uncomplexed species equilibrium. The project's experimental objective is to determine if the redox potentials of both complexed and …
Analysis Of Two Circuits For Detecting Superconducting Transition Temperatures, Terry Bowness
Analysis Of Two Circuits For Detecting Superconducting Transition Temperatures, Terry Bowness
Opportunities for Undergraduate Research Experience Program (OURE)
When measuring the transition temperature of large numbers of high Tc superconducting samples it is desirable to have available equipment that is both easy to operate and reliable. In addition should anything malfunction, the device should be relatively simple to repair. One method of measurement involves placing a sample in the magnetic field of an inductor, the inductor being an active member of some type of oscillating circuit. There are many standard oscillator designs which can be used for this type of application. In this report two such circuits, the tunnel diode and Hartley oscillators, will be examined and …
Evaluation Of Film Coated Window Glass Subjected To The Effects Of Windstorms, Ronald B. Shankland Jr.
Evaluation Of Film Coated Window Glass Subjected To The Effects Of Windstorms, Ronald B. Shankland Jr.
Opportunities for Undergraduate Research Experience Program (OURE)
The harm incurred by structures, equipment, and people due to window unit failure during a windstorm is drastically reduced if the glass remains in the frame until the storm has subsided.
There are basically two types of window glass used in curtain wall cladding systems: heat treated and annealed. Heat treated glass is tempered during its manufacture so that it retains residual surface stresses in the range of 3500 psi to 10,000 psi, or more. Annealed glass is cooled very slowly under controlled conditions in order to remove undesired internal stresses (Reznik, 1987). Also known as float glass, annealed glass …
Extrapolation Of The Experimental Data Of Electron Scattering, Hansen Chen
Extrapolation Of The Experimental Data Of Electron Scattering, Hansen Chen
Opportunities for Undergraduate Research Experience Program (OURE)
Our problem of interest is electron-atom scattering. One type of experiment is to measure the number of electrons exciting an atom from a initial s-state to a final p-state. These measurements are proportional to the differential cross section (DCS)….
The plane wave Bom approximation is known not to be accurate enough. However Lassetre claims that even if PWBA (plane wave Bom approximation) is not reliable, a more accurate theory should still extrapolate to the optical oscillator strength.
The theory we are using is significantly better than the PWBA. According to Lassetre’s theorem, our theory should extrapolate to the optical oscillator …