Digital Commons Network^™

African Water: An Experience With Project Management In Bulima, Tanzania, Robert Sharp

Honors Theses

Details the author's experiences researching, designing, and implementing a water system for a boarding school in Africa.

Digital Implementation Of A True Random Number Generator, Sam Mitchum

Theses and Dissertations

Random numbers are important for gaming, simulation and cryptography. Random numbers have been generated using analog circuitry. Two problems exist with using analog circuits in a digital design: (1) analog components require an analog circuit designer to insure proper structure and functionality and (2) analog components are not easily transmigrated into a different fabrication technology. This paper proposes a class of random number generators that are constructed using only digital components and typical digital design methodology. The proposed classification is called divergent path since the path of generated numbers through the range of possible values diverges at every sampling. One …

Numerical Simulation Of Underground Solar Thermal Energy Storage, Marshall Sweet

Theses and Dissertations

The United States Department of Energy indicates that 97% of all homes in the US use fossil fuels either directly or indirectly for space heating. In 2005, space heating in residential homes was responsible for releasing approximately 502 million metric tons of carbon dioxide into the atmosphere. Meanwhile, the Sun provides the Earth with 1000 watts per square meter of power everyday. This document discusses the research of modeling a system that will capture and store solar energy during the summer for use during the following winter. Specifically, flat plate solar thermal collectors attached to the roof of a single …

Soil Behavior Under Blast Loading, Jichong An

Department of Civil and Environmental Engineering: Dissertations, Theses, and Student Research

Understanding the behavior of soil under blast loading is very important to engineers in mining, tunneling, and military construction. Due to the very complex structure of a soil mass it is very difficult to describe its constitutive relation, especially when it has different water contents and it is under blast loading conditions. New protective system designs subjected to blast loading need to be proved its validation prior to predict effect of explosive before implementation. Full-scale, buried explosive tests are costly. Finite element simulations play a significant role in the design of protective systems, for example a bottom platform of lightweight …

A Generalized Non-Parametric Approach For Uncertainty Evaluation In Travel Time Prediction Models, Bhaven Naik

Department of Civil and Environmental Engineering: Dissertations, Theses, and Student Research

A core component within Advanced Traveler Information Systems is travel time information because it is easily understood and perceived by travelers. However, the suggested travel time information should be based not only on historical and real-time conditions, but also on forecasted or “unknown” future conditions.

Existing research has focused primarily on developing models that forecast point estimates of the mean travel time that are in close comparison to their respective field values. There has been limited research on any insight into the reliability or uncertainty margin that exists around the forecasted point estimate. As well, these researches have a limitation …

Solving Parabolic Partial Differential Equations Using Modified Bellman's Method With G-Spline Interpolation, Osama H. Mohammed

Baghdad Science Journal

The aim of this paper is to approximate the solution of the parabolic partial differential equations (heat equations) using Bellman's method with the cooperation of the G-spline interpolation formula. The partial differential equation will then be changed into a system of the first order ordinary differential equation. The resulting system may be then solved easily by using the fundamental matrix solution. In this paper, the Bellman's method may be considered as a generalization to the usual Bellman's method with an arbitrary ordinary derivative.

Scheduling Job Families On A Single Machine, Adawiyah A. Mahmood, Naji M. Saheab

Baghdad Science Journal

The problem of scheduling n jobs on a single machine is considered, where the jobs are partitioned into several families and a set – up time is necessary between jobs of different families. The objective is to find a lower bound for the problem of minimizing the sum of completion times and the maximum tardiness. This paper uses a decomposition property to find a lower bound in order to incorporated in a branch and bound algorithm for constructing an optimal schedule.

Effect Of Temperature On Viability Of Human Hydatid Cyst & Study The Volume Of Hydatid Cyst, Ismail Abdel Al-Hadithi, Maisam Balasm Al-Khamesi

Baghdad Science Journal

The hydatid materials were collected and studied, so they were contained 50 fertile human hydatid cases {33 (66%) females and 17 (34%) males}. They were collected from Al-Ramadi General Hospital during the period from December, 2003 to July, 2004 .Cysts were observed in 40 (80%) from the liver, 5 (10%) from the lungs, 3 (6%) from the kidney and 2 (4%) cysts from urinary bladder. The specimens were taken from patients of different ages. The in vitro viability of protoscoleces was assessed on the basis of flame cell activity and eosein exclusion, which were considered as criteria to determine the …

Jordan Θ-Centralizers Of Prime And Semiprime Rings, Abdulrahman H. Majeed, Mushreq I. Meften

Baghdad Science Journal

The purpose of this paper is to prove the following result: Let R be a 2-torsion free ring and T: R→R an additive mapping such that T is left (right) Jordan θ-centralizers on R. Then T is a left (right) θ-centralizer of R, if one of the following conditions hold (i) R is a semiprime ring has a commutator which is not a zero divisor . (ii) R is a non commutative prime ring . (iii) R is a commutative semiprime ring, where θ be surjective endomorphism of R . It is also proved that if T(xoy)=T(x)oθ(y)=θ(x)oT(y) for all x, …

Pre-Test Single And Double Stage Shrunken Estimators For The Mean Of Normal Distribution With Known Variance, Abbas Najim Salman

Baghdad Science Journal

This paper is concerned with pre-test single and double stage shrunken estimators for the mean (μ) of normal distribution when a prior estimate (μ0) of the actule value (μ) is available, using specifying shrinkage weight factors ψ(-) as well as pre-test region (R). Expressions for the Bias [B(-)], mean squared error [MSE(-)], Efficiency [EFF(-)] and Expected sample size [E(n/μ)] of proposed estimators are derived. Numerical results and conclusions are drawn about selection different constants included in these expressions. Comparisons between suggested estimators, with respect to classical estimators in the sense of Bias and Relative Efficiency, are given. Furthermore, comparisons with …

Stability Of Nonlinear Systems Of Fractional Order Differential Equations, Alaaldeen N. Ahmed, Rasheed A. Abdul-Satar

Baghdad Science Journal

In this paper, a sufficient condition for stability of a system of nonlinear multi-fractional order differential equations on a finite time interval with an illustrative example, has been presented to demonstrate our result. Also, an idea to extend our result on such system on an infinite time interval is suggested.

On Semi-P-Compact Space1, Nerjis Abdul Jabbar, Suaad Gedaan

Baghdad Science Journal

The purpose of this paper is to introduce a new type of compact spaces, namely semi-p-compact spaces which are stronger than compact spaces; we give properties and characterizations of semi-p-compact spaces.

Radiative Forcing Over The Conterminous United States Due To Contemporary Land Cover Use Change And Sensitivity To Snow And Interannual Albedo Variability, Christoper A. Barnes, David P. Roy

GSCE Faculty Publications

Satellite‐derived land cover land use (LCLU), snow and albedo data, and incoming surface solar radiation reanalysis data were used to study the impact of LCLU change from 1973 to 2000 on surface albedo and radiative forcing for 58 ecoregions covering 69% of the conterminous United States. A net positive surface radiative forcing (i.e., warming) of 0.029 Wm−2 due to LCLU albedo change from 1973 to 2000 was estimated. The forcings for individual ecoregions were similar in magnitude to current global forcing estimates, with the most negative forcing (as low as −0.367 Wm−2) due to the transition to forest and the …

Watershed Survey And Pilot Lcc Project, Norman Turgeon, Three Ponds Protective Association

PREP Reports & Publications

This describes two projects accomplished in 2010 by the Three Ponds Protective Association (TPPA) and several partners to identify and reduce soil erosion due to storm water runoff into the Milton Three Ponds

When Curiosity Kills More Than The Cat: The Perils Of Unchecked Scientific Inquiry, Jamie Shannon

Pomona Senior Theses

This work analyzes the ecological, physical, emotional and health impacts of the US nuclear testing done in the Marshall Islands in the mid-20th century.

Embedded Radio Frequency Identification Device License Plates For Roadside Use In Nebraska, Dwight L. Mosby Jr.

Department of Civil and Environmental Engineering: Dissertations, Theses, and Student Research

The transportation industry has many stakeholders with different needs that work with advanced technologies. Radio Frequency Identification (RFID) is an emerging technology that is used to track inventory and it holds promise for the transportation industry. This research identifies how to evaluate transportation stakeholder requirements for RFID technologies using a tool described as the House of Quality (HOQ). This research investigates RFID’s ability to work in license plates and may provide infrastructure to support identifying RFID enabled commercial vehicles. This research considers variables that affect the performance of a RFID License Plate System that will use a scanner located at …

Volume 46 - Issue 09 - Friday, December 3, 2010, Rose Thorn Staff

The Rose Thorn Archive

The Rose Thorn, Rose-Hulman's independent student newspaper.

Spatial Semantics For Better Interoperability And Analysis: Challenges And Experiences In Building Semantically Rich Applications In Web 3.0, Amit P. Sheth

Kno.e.sis Publications

No abstract provided.

Measurements Of Gas‐Phase Inorganic And Organic Acids From Biomass Fires By Negative‐Ion Proton‐Transfer Chemical‐Ionization Mass Spectrometry, P. Veres, James M. Roberts, I. R. Burling, C. Warneke, Joost De Gouw, Robert J. Yokelson

Chemistry and Biochemistry Faculty Publications

[1] Emissions from 34 laboratory biomass fires were investigated at the combustion facility of the U.S. Department of Agriculture Fire Sciences Laboratory in Missoula, Montana. Gas-phase organic and inorganic acids were quantified using negative-ion proton-transfer chemical-ionization mass spectrometry (NI-PT-CIMS), open-path Fourier transform infrared spectroscopy (OP-FTIR), and proton-transfer-reaction mass spectrometry (PTR-MS). NI-PT-CIMS is a novel technique that measures the mass-to-charge ratio (m/z) of ions generated from reactions of acetate (CH₃C(O)O⁻) ions with inorganic and organic acids. The emission ratios for various important reactive acids with respect to CO were determined. Emission ratios for isocyanic acid (HNCO), 1,2 …

Reporter - December 3rd 2010, Rit Reporter Staff

University Publications

No abstract provided.

Evaluation Of Optimization Algorithms For Improvement Of A Transportation Companies (In-House) Vehicle Routing System, Jian Han

Department of Industrial and Management Systems Engineering: Dissertations, Theses, and Student Research

Vehicle routing problem (VRP) is the main issue of the transportation. It is becoming more and more popular. Trucking companies play an important role in the transportation industry. Most trucking companies are developing their own software to make profit. Often, the software is used for routing optimization models to minimize cost because the first work is organized over the road.

Linear Programming and saving heuristics are traditional algorithms for solving the vehicle routing problems. However, none of the companies want to make a decision of routing by calculating with mathematics models in their companies. So the vehicle routing software is …

Faculty Senate Meeting Minutes Dec 3, 2010, A-State Faculty Senate

Faculty Senate Minutes

No abstract provided.

Network Science: Using Information Technology To Enable Collaboration, Arden L. Bement Jr.

PPRI Digital Library

No abstract provided.

Principals' Opinions On The Impact Of High-Stakes Testing On Teaching And Learning In The Public Elementary Schools In The State Of Utah, Raylene Jo Hadley

Theses and Dissertations

The No Child Left Behind Act of 2001 (NCLB) brought high-stakes testing to the forefront of American public education. With its call for teachers and schools to be accountable for academic performance, NCLB has focused the spotlight on yearly progress, as measured by students' test scores. Issues associated with this charge include the questionable reliability of tests, the variation evident in state standards, and the consequences an emphasis on high-stakes testing may have on teaching and learning in the classroom. The purpose of this study was to investigate the consequences of high-stakes testing on teaching and learning in public elementary …

The Development Of An Adaptive Control System For A Phase-Locked Excitation (Phlex) Method For Advanced Wind Turbine Blade Fatigue Testing, William Michael Haupfear

Master's Theses - Daytona Beach

The National Renewable Energy Laboratory's (NREL) National Wind Technology Center (NWTC) provides the means necessary for advanced wind turbine blade testing. To improve on the current testing methods, a new testing method is being developed using the existing dual-axis fatigue testing capabilities in conjunction with another actuator to provide a phase-locked excitation method with adaptive algorithms and advanced control system strategies. This testing method will provide a more representative loading of the blade for fatigue testing as compared to loading seen in the field. The control system will integrate the MTS software and controller with a supervisory controller, programmed in …

Quantitative Stability And Optimality Conditions In Convex Semi-Infinite And Infinite Programming, M J. Cánovas, M A. Lopez, Boris S. Mordukhovich, J Parra

Mathematics Research Reports

This paper concerns parameterized convex infinite (or semi-infinite) inequality systems whose decision variables run over general infinite-dimensional Banach (resp. finite-dimensional) spaces and that are indexed by an arbitrary fixed set T. Parameter perturbations on the right-hand side of the inequalities are measurable and bounded, and thus the natural parameter space is loo(T). Based on advanced variational analysis, we derive a precise formula for computing the exact Lipschitzian bound of the feasible solution map, which involves only the system data, and then show that this exact bound agrees with the coderivative norm of the aforementioned mapping. On one hand, in this …

The Value Of The Integrated Business Core Experience: Perceptions Of Recent Graduates From Brigham Young University–Idaho, Craig D. Bell

Department of Educational Administration: Dissertations, Theses, and Student Research

The effectiveness of business education has come under intense scrutiny—with many questioning its overall value. Main criticisms center on the lack of integration across the curriculum, too much emphasis on quantitative analysis, and the absence of relevant application. Most critics call for business education to become more hands-on and to create opportunities for students to practice the discipline of management. The purpose of this mixed method explanatory study was to explore the perceived influence of the Integrated Business Core (IBC) experience at Brigham Young University – Idaho on career success. The study sought to capture the perceptions of recent graduates …

Davis, Nathan William (Fa 534), Manuscripts & Folklife Archives

Folklife Archives Finding Aids

Finding aid only for Folklife Archives Project 534. Folklore material classified by genre. Information collected by Nathan William Davis related to folklore genres for a folk studies class at Western Kentucky University.

Sandspur, Vol 117, No 13, December 03, 2010, Rollins College

The Rollins Sandspur

Rollins College student newspaper, written by the students and published at Rollins College. The Sandspur started as a literary journal.

Ecological Impacts Of Stream Bank Stabilization In A Great Plains River, Christopher M. Pracheil

School of Natural Resources: Dissertations, Theses, and Student Research

Reduced ecological complexity, decreased water quality, and accelerated stream bank erosion are common disturbances in rivers with agriculturally dominated watersheds. Massive bank failures, increased sediment loads, and decreased riverine habitat are current problems in the agriculturally dominated Cedar River of central Nebraska. In an effort to slow erosion and prevent further ecological degradation, 20 reach scale stream bank stabilization projects were installed on the Cedar River from 2001 to 2004. The objective of this study was to determine the impact of the Cedar River stream bank stabilization projects on the ecological conditions within the Cedar River. Stream bank erosion, suspended …