Digital Commons Network^™

Ray-Traced Simulation Of Radiation Pressure For Optical Lift, Timothy Peterson

Theses

When light refracts at a surface, it changes the direction and intensity of the light rays. By Newton's 3rd law, this process imparts a small momentum to the object. This effect can be exploited to manipulate very small objects, by carefully selecting the shape and optical properties of the object. This thesis describes a computational model based on the laws of physics to determine the forces and torques resulting from light interacting with a hemicylindrical particle. This model has been successfully used to predict for the first time a phenomenon called optical lift.

Addressing The Gender Gap In Federal Law Enforcement Professions: The Motivational Attraction Of Women In Computing, Maegan Stanek

Theses

Nationwide, federal law enforcement agencies seek candidates with specialized skill sets and more advanced educational knowledge for employment. In view of this, it was proven, after much open source research into federal agencies' qualification requirements, that those who possess a background in select areas, specifically computer science, have a better opportunity for employment with federal law enforcement agencies, particularly in the computing sector; although, in many cases, work experience can be substituted for a college degree [7]. For this reason, many women are not involved in, nor apply for, computing professions within federal law enforcement agencies. A significant step in …

The Visport Project: Visualization Of Port Logistics, Petros J. Katsioloudis, Ginger S. Watson

STEMPS Faculty Publications

The article focuses on the introduction of Visualization in Port Logistics (VisPort) web-based tool project for the visualization of port careers and logistics in the U.S. It outlines the educational objectives of the project including the virtual reality experience associated with port operation, the multimedia environment for the learning of students, and the simulation of port logistics. It mentions that the scientific and technical visualization curriculum offered to students enhances the skills related to scientific and mathematical concepts as well as the experience on graphic techniques.

Improvements To The Methods Used To Measure Bubble Attenuation Using An Underwater Acoustical Resonator, Helen Czerski, Svein Vagle, David M. Farmer, Nick Hall-Patch

Graduate School of Oceanography Faculty Publications

Active acoustic techniques are commonly used to measure oceanic bubble size distributions, by inverting the bulk acoustical properties of the water (usually the attenuation) to infer the bubble population. Acoustical resonators have previously been used to determine attenuation over a wide range of frequencies (10–200 kHz) in a single measurement, corresponding to the simultaneous measurement of a wide range of bubble sizes (20–300 μm radii). However, there is now also considerable interest in acquiring measurements of bubbles with radii smaller than 16 μm, since these are thought to be important for ocean optics and as tracers for near-surface …

Instabilities In An Internal Solitary-Like Wave On The Oregon Shelf, Levin G. Lamb, David M. Farmer

Graduate School of Oceanography Faculty Publications

Observations of internal solitary-like waves (ISWs) on the Oregon Shelf suggest the presence of Kelvin–Helmholtz billows in the pycnocline and larger-scale overturns at the back of the wave above the pycnocline. Numerical simulations designed to explore the mechanisms responsible for these features in one particular wave reveal that shear instabilities occur when (i) the minimum Richardson number Ri in the pycnocline is less than about 0.1; (ii) L_x/λ > 0.8, where L_x is the length of the unstable region with Ri < 0.25 and λ is a half wavelength of the wave; and (iii) a linear spatial stability analysis predicts …

A Matrix Formulation For The Moment Distribution Method Applied To Continuous Beams, Arlindo Pires Lopes, Adriana Santos, Rogério Coelho Lopes

Civil and Environmental Engineering Faculty Publications and Presentations

The Moment Distribution Method is a quite powerful hand method of structural analysis, in which the solution is obtained iteratively without even formulating the equations for the unknowns. It was formulated by Professor Cross in an era where computer facilities were not available to solve frame problems that normally require the solution of simultaneous algebraic equations. Its relevance today, in the era of personal computers, is in its insight on how a structure reacts to applied loads by rotating its nodes and thus distributing the loads in the form of member-end moments. Such an insight is the foundation of the …

Java Smell Detector, Nitin Mathur

Master's Projects

“Code Smell” or “Bad Smell”, at the very least, is an indicator of badly written code and is often indicative of deeper problems in software design. In layman terms, it signals flaws in the core foundation or architecture of the software that can cause any number of more serious problems – from usability and runtime performance to supportability and enhancement. These problems can mostly be prevented by the systematic refactoring of the code. Refactoring is the process (and according to some, an ‘art’) of making incremental changes to existing source code to improve its nonfunctional attributes, without modifying its external …

Classroom Manipulative To Engage Students In Mathematical Modeling Of Disease Spread: 1 + 1 = Achoo!, H. Gaff, M. Lyons, G. Watson

Biological Sciences Faculty Publications

Infectious diseases ranging from the common cold to cholera affect our society physically, emotionally, ecologically, and economically. Yet despite their importance and impact, there remains a lack of effective teaching materials for epidemiology and disease ecology in K-12, undergraduate, and graduate curricula [2]. To address this deficit, we've developed a classroom lesson with three instructional goals: (1) Familiarize students on basic concepts of infectious disease ecology; (2) Introduce students to a classic compartmental model and its applications in epidemiology; (3) Demonstrate the application and importance of mathematical modeling as a tool in biology. The instructional strategy uses a game-based mathematical …

Examining Experiences Of English Literacy Development (Eld) Program From Multiple Stakeholders’ Perspectives, Hany Ibraham

Theses and Dissertations (Comprehensive)

The present study, conducted in collaboration with a public school board in southern Ontario, Canada, focused on stakeholders’ perspectives of an English Literacy Development (ELD) program offered in secondary schools within this particular board. The purpose of this research was to identify resources that would help address school absenteeism, credit accumulation and graduation needs of ELD learners, as well as to learn which factors in ELD better assist students who are refugees with school integration and in reaching their academic potentials. The research objectives were (1) to identify factors that influence integration of refugee students in school and (n) to …

Multi-Wavelength Observations Of The Flaring Gamma-Ray Blazar 3c 66a In 2008 October, P. T. Reynolds, Fermi-Lat, Veritas, Gasp-Webt

Physical Sciences Publications

The BL Lacertae object 3C 66A was detected in a flaring state by the Fermi Large Area Telescope (LAT) and VERITAS in 2008 October. In addition to these gamma-ray observations, F-GAMMA, GASP-WEBT, PAIRITEL, MDM, ATOM, Swift, and Chandra provided radio to X-ray coverage. The available light curves show variability and, in particular, correlated flares are observed in the optical and Fermi-LAT gamma-ray band. The resulting spectral energy distribution can be well fitted using standard leptonic models with and without an external radiation field for inverse Compton scattering. It is found, however, that only the model with an external …

Behavior Constrains The Dispersal Of Long-Lived Spiny Lobster Larvae, Mark J. Butler Iv, Claire B. Paris, Jason S. Goldstein, Hirokazu Matsuda, Robert K. Cowen

Biological Sciences Faculty Publications

Behavior such as ontogenetic vertical migration (OVM) limits the transport of marine larvae with short pelagic larval durations (PLDs), but its effect on the supposed long-distance dispersal of larvae with long PLDs is unknown. We conducted laboratory tests of ontogenetic change in larval phototaxis and examined size-specific patterns of larval distribution in the plankton to characterize OVM in the Caribbean spiny lobster Panulirus argus during its long (6 mo) PLD. We then used a coupled biophysical model to explore the consequences of OVM and hydrodynamics on larval P. argus dispersal in the Caribbean Sea. Larvae reared in the laboratory were …

Monte Carlo Comparison Of Back-Propagation, Conjugate-Gradient, And Finite-Difference Training Algorithms For Multilayer Perceptrons, Stephen Wehry

Theses

Monte Carlo Simulation is used to compare the performance of the Back-Propagation, Conjugate-Gradient, and Finite-Difference algorithms when training simple Multilayer Perceptron networks to solve pattern recognition and bit counting problems. Twelve individual simulations will be run for each training algorithm-test problem combination, resulting in an overall total of 72 simulations. The random elements in each Monte Carlo simulation are to be the individual synaptic weights between layers, which will be uniformly distributed. Two other factors, the size of the hidden layer and the exponent of the error function, will also be tested within the simulation plan outlined above.

Wave-Function Functionals For The Density, Marlina Slamet

Physics Faculty Publications

We extend the idea of the constrained-search variational method for the construction of wave-function functionals ψ[χ] of functions χ. The search is constrained to those functions χ such that ψ[χ] reproduces the density ρ(r) while simultaneously leading to an upper bound to the energy. The functionals are thereby normalized and automatically satisfy the electron-nucleus coalescence condition. The functionals ψ[χ] are also constructed to satisfy the electron-electron coalescence condition. The method is applied to the ground state of the helium atom to construct functionals ψ[χ] that reproduce the density as given by the Kinoshita correlated wave function. The expectation …

Transformational Teams And Their Impact On Customer Satisfaction At One Firm, Timothy J. Crader D.B.A., Stephen M. Brown Ed, D.

WCBT Working Papers

This study examined the relationships between core selling teams (CSTs) and customer satisfaction within the mission critical power design industry. The literature indicates that CSTs, which are considered a state of the art sales model, deserved further research. The SERVQUAL survey was used to measure customer satisfaction with Company X’s most strategic customers. The difference in customer satisfaction for customers serviced by CSTs and traditional sales personnel were compared. The investigation found support indicating that a CST approach had a positive relationship to increased customer satisfaction levels. Based on the results of the study, it is recommended that sales leaders …

Admissions Viewbook, 2011-2012, Illinois State University, Office Of Admissions

Admissions Viewbook

Recruitment booklet created by Illinois State University's Office of Admissions

Music To Everyone's Ears: Binding Mediation In Music Rights Disputes, Matthew H. Ormsbee

Cardozo Journal of Conflict Resolution

Litigation has been the mainstay of copyright disputes since America's earliest copyright statute first permitted a cause of action for copyright infringement in 1790. While alternative dispute resolution ("ADR") has become more prevalent in other areas of the law, many copyright attorneys and their clients do not typically consider ADR processes a viable option because these processes are still relatively new to copyright law.

This Note proposes greater use of binding mediation, a specialized ADR process, in music rights disputes, which are fundamentally copyright infringement disputes. Section I discusses the background of copyright litigation and modern application of ADR in …

Specification Of Structural Viewer And Analytical Tool (Jecp/Svat), Xingzhong Li

Nebraska Center for Materials and Nanoscience: Faculty Publications

Java Electron Crystallography Package (JECP) is a collection of programs for crystallography and electron diffraction analysis. The package is designed and written by Dr. X.Z. Li. The software can be used as a research tool as well as a teaching aid. The need of a structural viewer/an analytical tool, using the same input data format as the JECP and proJECT software, becomes obvious with the growth of the JECP and proJECT programs and users. There exist many programs for structural design and/or display in various levels developed by individual, research group or software company. Some of them are expensive software …

Magnetism Of Cluster-Deposited Y–Co Nanoparticles, Balamuruga Balamurugan, Ralph Skomski, Xingzhong Li, V. R. Shah, George C. Hadjipanayis, Jeffrey E. Shield, David J. Sellmyer

Nebraska Center for Materials and Nanoscience: Faculty Publications

Nanoparticles of YCo₂, YCo_3, and YCo₅ are produced by cluster-deposition and investigated both structurally and magnetically. The nanoparticles have sizes of less than 10 nm and are superparamagnetic at 300 K, irrespective of stoichiometry. As-produced nanoparticles exhibit disordered structures with magnetic properties differing from those of the bulk particles. The temperature-dependent magnetization curves of the nanoparticles reveal blocking temperatures from 110 to 250 K, depending on stoichiometry. The magnetic anisotropy constant K₁ of disordered YCo₅ nanoparticles of 7.8 nm in size is 3.5×10⁶ergs/cm³, higher than those of the disordered YCo …

Using Exploratory Interviews To Re-Frame Planned Research On Classroom Issues, Julia Ellis, Vera Janjic-Watrich, Vicki Macris, Richelle Marynowski

Northwest Journal of Teacher Education

In this paper we describe and illustrate the use of an exploratory first interview to refine research questions or interviewing ideas prior to finalizing plans for a study about classroom issues or practices. Three researchers give accounts of their exploratory interviews concerning student “aliteracy,” the school experience of immigrant students, and mathematics teachers’ experience of assessment and grading. The researchers endeavored to acquire an holistic understanding of their participants’ experiences by: using open-ended questions about both the topic and the participants’ lives in general; asking participants to complete pre-interview activities such as drawings or diagrams about either the topic or …

2011-2012 Lindenwood University Lcie Course Catalog, Lindenwood University

Course Catalogs

Lindenwood University LCIE Course Catalog

2011-2012 Lindenwood University Undergraduate Course Catalog, Lindenwood University

Course Catalogs

Lindenwood University Undergraduate Course Catalog

2011-2012 Lindenwood University-Belleville Undergraduate Course Catalog, Lindenwood University

Course Catalogs

Lindenwood University-Belleville Course Catalog

Information Leakage Through Second Hand Usb Flash Drives Within The United Kingdom, Widya Chaerani, Nathan Clarke, Christopher Bolan

Australian Digital Forensics Conference

The pervasiveness of flash based USB storage alongside increasing capacity and lowering price points has lead to a documented potential for information leakage. Such a potential is significantly raised when employees are able to use personal devices within a business environment with little regard to safe disposal practices. This study purchased a range of USB storage devices from UK based auction sites to determine what if any data was recoverable. The study found a total of 36136 recoverable files including a range of data detailing private information of previous owners, confidential corporate data, with twenty percent of the purchased USB …

Students’ Perception Of Project Assisted Learning, Edward E. Osakue, Graham Thomas

Faculty Publications

The need to provide students with learning experiences that can help them develop the knowledge and skills relevant to the workplace has been consistently raised by businesses. Project-Assisted Learning (PAL) and Project-Based Learning (PBL) are effective learning methods that closely match workplace situations. Several studies have documented the benefits of PAL and PBL from the perspectives of the educators. This article presents cases of learning experiences in which project assignment, a case of PAL, was used to enhance the learning experiences of the students. The influence of the project on their experiences was captured using a survey instrument that involved …

Optical Cell For Combinatorial In Situ Raman Spectroscopic Measurements Of Hydrogen Storage Materials At High Pressures And Temperatures, Jason R. Hattrick-Simpers, Wilbur S. Hurst, Sesha S. Srinivasan, James E. Maslar

Faculty Publications

An optical cell is described for high-throughput backscattering Raman spectroscopic measurements of hydrogen storagematerials at pressures up to 10 MPa and temperatures up to 823 K. High throughput is obtained by employing a 60 mm diameter × 9 mm thick sapphire window, with a corresponding 50 mm diameter unobstructed optical aperture. To reproducibly seal this relatively large window to the cell body at elevated temperatures and pressures, a gold o-ring is employed. The sample holder-to-window distance is adjustable, making this cell design compatible with optical measurement systems incorporating lenses of significantly different focal lengths, e.g., microscope objectives and single element …

Single-Particle Model For A Lithium-Ion Cell: Thermal Behavior, Meng Guo, Godfrey Sikha, Ralph E. White

Faculty Publications

The single-particle model presented by Santhanagopalan et al. [ J. Power Sources , 156 , 620 (2006)] is extended to include an energy balance. The temperature dependence of the solid phase diffusion coefficient of the lithium in the intercalation particles, the electrochemical reaction rate constants, and the open circuit potentials (OCPs) of the positive and negative electrodes are included in the model. The solution phase polarization is approximated using a nonlinear resistance, which is a function of current and temperature. The model is used to predict the temperature and voltage profiles in a lithium-ion cell during galvanostatic operations. The single-particle …

Density Functional Theory Study On The Electronic Structure Of N- And P-Type Doped Srtio3 At Anodic Solid Oxide Fuel Cell Conditions, S. Suthirakun, Salai Cheettu Ammal, G. Xiao, Fanglin Chen, Hans-Conrad Zur Loye, Andreas Heyden

Faculty Publications

The electronic conductivity and thermodynamic stability of mixed n-type and p-type doped SrTiO3 have been investigated at anodic solid oxide fuel cell (SOFC) conditions using density functional theory (DFT) calculations. In particular, constrained ab initio thermodynamic calculations have been performed to evaluate the phase stability and reducibility of various Nb- and Ga-doped SrTiO3 at synthesized and anodic SOFC conditions. The density of states (DOS) of these materials was analyzed to study the effects of n- and p-doping on the electronic conductivity. In agreement with experimental observations, we find that the transformation from 20% Nb-doped Sr-deficient SrTiO3 to a non-Sr-deficient phase …

Joining Or Changing The Conversation? Catholic Social Thought And Intellectual Property, Frank Pasquale

Cardozo Arts & Entertainment Law Journal

No abstract provided.

Effect Of Soybean Oil Fatty Acid Composition And Selenium Application On Biodiesel Properties, Benjamin D. Fallen, Vincent R. Pantalone, Carl E. Sams, Dean A. Kopsell, Steven F. Vaughn, Bryan R. Moser

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

Biodiesel consisting principally of monounsaturated fatty acid methyl esters (FAME) has been reported to have the optimal balance between cold flow properties and oxidative stability, therefore producing a superior fuel. In addition, treating biodiesel with antioxidants such as selenium (Se) also increases oxidative stability. Fuel properties including acid value (AV), cloud point (CP), iodine value (IV), pour point (PP), peroxide value (PV), induction period (IP), onset temperature (OT), and kinematic viscosity (KV) were used to evaluate a newly developed Roundup Ready^® soybean recombinant inbred line (RIL) and a commercial cultivar. The RIL had a fatty acid profile with elevated …

Differentially Expressed Genes In Populus Simonii×Populus Nigra In Response To Nacl Stress Using Cdna-Aflp, Lei Wang, Boru Zhou, Lili Wu, Baozhu Guo, Tingbo Jiang

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

Salinity is an important environmental factor limiting growth and productivity of plants, and affects almost every aspect of the plant physiology and biochemistry. The objective of this study was to apply cDNA-AFLP and to identify differentially expressed genes in response to NaCl stress vs. no-stress in Populus simonii × Populus nigra in order to develop genetic resources for genetic improvement. Selective amplification with 64 primer combinations allowed the visualization of 4407 transcript-derived fragments (TDFs), and 2027 were differentially expressed. Overall, 107 TDFs were re-sequenced successfully, and 86 unique sequences were identified in 10 functional categories based on their putative functions. …