Digital Commons Network^™

Concrete Roughness Characterization Using Laser Profilometry For Fiber-Reinforced Polymer Sheet Application, Norbert H. Maerz, Poornima Chepur, John J. Myers, Justin Linz

Geosciences and Geological and Petroleum Engineering Faculty Research & Creative Works

The failure of a reinforced concrete member strengthened with fiberreinforced polymer (FRP) laminates may be caused by crushing of concrete, rupture of FRP laminates, or delamination of the FRP sheet. Therefore, the effectiveness and failure mode of FRP sheets applied to beams and columns is related to the degree of adhesion of the epoxy to the concrete surface. When a peeling or delamination failure can be avoided, a more effective engagement of the FRP sheet occurs, which results in more efficient use of the material. One of the principal factors affecting the bond behavior between the concrete and epoxy is …

Mobile Data Management, Sanjay Kumar Madria, Sourav S. Bhowmick

Computer Science Faculty Research & Creative Works

The management of data in the mobile computing environment offers new challenging problems. Existing software needs to be upgraded to accommodate this environment. To do so, the critical parameters need to be understood and defined. We have surveyed some problems and existing solutions

A Case Study Of The Beneficial Reuse Of Treated Groundwater, Andrew Curtis Elmore, Thomas Graff

Geosciences and Geological and Petroleum Engineering Faculty Research & Creative Works

The future disposal of treated groundwater at the former Nebraska Ordnance Plant (NOP) Superfund site has been a topic of interest to the local property owners, the U.S. Army Corps of Engineers, and the local regulatory agencies. The Record of Decision for the site includes the extraction, treatment, and disposal of almost 3,000 gpm of groundwater with an estimated restoration time period exceeding 100 years. Interest from property owners and the Nebraska agency charged with regulating groundwater supply prompted the Corps of Engineers to consider several strategies for beneficially reusing the treated water. Alternatives included the establishment of a rural …

Design And Installation Of Horizontal Wick Drains For Landslide Stabilization, Paul Michael Santi, C. Dale Elifrits, J. A. Liljegren

Geosciences and Geological and Petroleum Engineering Faculty Research & Creative Works

One of the most effective options to stabilize landslides is to reduce the amount of water they contain by installing horizontal drains. A new type of horizontal drain material, geosynthetic wick drains, and a new installation method, driving drains rather than drilling them, were evaluated. Horizontal wick drains offer several advantages over conventional horizontal drains: They resist clogging, are inexpensive, may be deformed without rupture, and may be installed by unskilled laborers with a minimal investment in equipment. More than 100 drains were installed at eight sites in Missouri, Colorado, and Indiana using bulldozers, backhoes, and standard wick drain-driving cranes. …

Experiments On Adaptive Techniques For Host-Based Intrusion Detection, Timothy Draelos, Michael Collins, David Duggan, Edward Thomas, Donald C. Wunsch

Electrical and Computer Engineering Faculty Research & Creative Works

This research explores four experiments of adaptive host-based intrusion detection (ID) techniques in an attempt to develop systems that can detect novel exploits. The technique considered to have the most potential is adaptive critic designs (ACDs) because of their utilization of reinforcement learning, which allows learning exploits that are difficult to pinpoint in sensor data. Preliminary results of ID using an ACD, an Elman recurrent neural network, and a statistical anomaly detection technique demonstrate an ability to learn to distinguish between clean and exploit data. We used the Solaris Basic Security Module (BSM) as a data source and performed considerable …

Applying The Method Of Moments And The Partial Element Equivalent Circuit Modeling Techniques To A Special Challenge Problem Of A Pc Board With Long Wires Attached, Yun Ji, Bruce Archambeault, Todd H. Hubing

Electrical and Computer Engineering Faculty Research & Creative Works

This paper investigates a canonical printed circuit board (PCB) problem using both a method of moments (MoM) and a partial element equivalent circuit (PEEC) modeling technique. The problem consists of a PCB populated with three traces. One trace is a signal line and the other two are I/O lines that couple to the signal line and extend beyond the boundary of the board. Although the MoM code was a frequency domain code and the PEEC code was a time-domain code, good agreement was achieved in both the time-domain and the frequency-domain

Permeability Performance Of High-Performance Concrete Subjected To Various Curing Regimes, John J. Myers

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Concrete technology has continued to advance throughout the years to meet the demands of designers and innovative structural systems. Traditionally, the most common means to specify durable concrete has been via specifying a maximum water-to-cementitious material ratio or a minimum cement content. With the advent of high-performance concrete (HPC), which often has higher contents of cementitious materials and a variety of admixtures, questions about permeability performance and alternative methods to specify durable concrete have arisen. The study conducted herein comments on the applicability of prescriptive specifications for HPC and investigates the influence of curing regimes and concrete temperature development during …

You Have The Power To Fight Bac!, Unknown Unknown

All Current Publications

No abstract provided.

Annuals - Help Them Survive Transplanting, Dennis Hinkamp

All Current Publications

No abstract provided.

Give Trees A Chance, Dennis Hinkamp

All Current Publications

No abstract provided.

Woad Rage, Dennis Hinkamp

All Current Publications

No abstract provided.

Fending Off Aphids, Dennis Hinkamp

All Current Publications

No abstract provided.

Join Hands With Spiders In Garden Warfare, Dennis Hinkamp

All Current Publications

No abstract provided.

An Investigation To Measure The Performance Of Commercial Printing Firms For Conducting Business-To-Customer Activities On The Web, Devang Pranlal Mehta

Dissertations and Theses @ UNI

This research was conducted to investigate the current status of commercial printing firms regarding the success of their performance using Web technology for conducting business-to-customer (B2C) activities. It was primarily based on Rogers' innovation theory and Auger's empirical study. The impact of the Web technology on the organizational performance was studied. The organizational performance was divided into three levels: financial performance (FP), non-financial performance (NFP), and overall performance (OP). The financial performance was measured by four financial indicators; whereas, the non-financial performance was measured by three non-financial indicators. The overall performance was then measured by adding the four financial performance …

School Playground Supervision Practices In The State Of Iowa, Heather Marie Bauer

Dissertations and Theses @ UNI

The purpose of this study was to investigate what types of playground supervision practices were being performed in Iowa public elementary schools. More specifically this study included the following research questions:

1. What is the typical public elementary school in Iowa? 2. Do schools in Iowa have playground supervision plans?
3. Who supervises the children?
4. Do schools require the supervisors to have playground safety training?
5. Do schools perform a regular maintenance check on their playground?

A questionnaire was designed to answer the research questions posed in this study. The questionnaire was reviewed by a panel of experts for …

High Precision Solder Droplet Printing Technology: Principle And Applications, Qingbin Liu, M. Orme, Ming-Chuan Leu

Mechanical and Aerospace Engineering Faculty Research & Creative Works

Solder droplet printing technology, which is low-cost, noncontact, flexible, data-driven, and environmentally friendly, has emerged as an enabling technology for precisely placing fine solder deposits on a variety of small substrates. It is suitable for a variety of applications including direct chip attach site preparation, 3D substrates, fine line interconnect, substrate via fill, optoelectronics and many others. It enables manufacturing techniques that are impossible or unfeasible with current technology, such as localized replacement of solder on board, depositing solder in different thicknesses on the same board, or using more than one type of solder on the same board. This makes …

Increasing The Independent Living Skills Of Lower Functioning Students In A Special School, Through Teacher Training, Motivational Strategies, Parent Involvement, Hands-On Experiences, And Music., Joan Reid

Abraham S. Fischler College of Education ETD Archive

This practicum was designed to increase the independent living skills of low functioning students in a special school. Parents were not involved in the school's programs and were not committed to seeing that their children develop independence. Teachers were not motivated or adequately trained and equipped to assist these students. These low functioning students were not aware that their needs were not being met.

The writer selected and utilized five strategies as solutions for the problem. These included: Teacher training, motivational strategies, parental involvement, hands-on experiences, and music. Weekly planning and training sessions were conducted for teachers, who were provided …

Development Of A Workshop To Prepare Nursing Students At Northwest College To Communicate Effectively With Low Literate Patients, Leslie A. Oja

Abraham S. Fischler College of Education ETD Archive

The problem existing at Northwest College was effective communication with low literate patients was not integrated into the nursing curriculum. The purpose of this study was the development of a workshop for nursing students to learn effective communication skills with low literate patients. There were six research questions. First, "What is the best model for developing a workshop including the assessment of educational needs?" Second, what are the components of a needs assessment for low literate patients? Third, what content is needed for developing a workshop? Fourth, what format will be needed for a workshop? Fifth, what is the best …

Teaching Children How To Learn: A Program To Teach Self-Regulation Skills, Connie C. Lawrence

Abraham S. Fischler College of Education ETD Archive

This report describes an intervention to train teachers how to instruct and support self-regulated learning in the classroom. An analysis of 4th- and 7th-grade student responses on a modified Motivated Strategies for Learning Questionnaire (Pintrich, Smith, Garcia, & McKeachie, 1991) revealed that, although 43% of the students indicated that they always or almost always use some self-regulation skills, 23% stated that they never or almost never use them. In a private school where the mission is to equip future learners, 50% of the students should be using self-regulation skills all or most of the time. An analysis of the teaching …

Development Of An Educational Curriculum For Tuskegee University’S Laboratory Animal Technician Staff With A Plan For Implementation And Evaluation, Helene Rodriguez Mcconnell

Abraham S. Fischler College of Education ETD Archive

As the field of biomedical research grew, regulating research programs became more difficult for the federal government to manage internally. Biomedical research institutions were given authority and responsibility for ensuring their research personnel were trained to perform their duties involving laboratory animals.

The proposed project's purpose was to develop a curriculum for Tuskegee University's laboratory animal technician staff. The following research questions guided this project:

1. What is the demand for the new curriculum?

2. What is required to ensure compliance for biomedical research?

3. What data are needed to assess the participant's learning needs?

4. How should this data …

Method Of Creating Ultra-Fine Particles Of Materials Using A High-Pressure Mill, Marian Mazurkiewicz

Mining Engineering Faculty Research & Creative Works

A method for creating ultra-fine particles of material using a high-pressure mill is described. The method includes placing a material in a first chamber and subjecting the material to a high-pressure liquid jet to divide it into particles. These particles are then transferred to a second chamber in which they are subjected to cavitation to further divide the particles into relatively smaller particles. These relatively smaller particles are then transferred to a third chamber, in which the particles collide with a collider to still further divide them into ultra-fine particles of the material. The mill of the present invention includes …

Master's Flute Recital, Kathleen Anne Cameron

Dissertations and Theses @ UNI

Kathleen Anne Cameron presented a graduate flute recital at 6:00 p.m. on March 8, 2001 in Davis Hall at the University of Northern Iowa School of Music. The recital was presented in partial fulfillment of the requirements for a Master of Music degree in flute performance. The recital repertoire represented a variety of challenging pieces from German Baroque to twentieth-century: Johann Sebastian Bach's Sonata in B Minor BWV 1030, Domenico Cimarosa's Concerto in G Major for Two Flutes and Orchestra, Franz Doppler's Airs Valaques Fantasie pour Flûte et Piano Opus 10, and Olivier Messiaen's Le Merle Noir pour Flûte et …

Graduate Recital In Voice, Rebecca Grady

Dissertations and Theses @ UNI

Rebecca Grady, soprano, presented her graduate voice recital on Thursday, April 12, 2001, at 6:00 in the evening in Davis Hall of the Gallagher-Bluedorn Performing Arts Center, on the University of Northern  Iowa campus, in partial fulfillment of the Master of Music degree. Her program included works by Handel, Dvorak, Liszt, and John la Montaine. The recital was presented in collaboration with pianist Korey Barrett. This abstract includes a discussion of the backgrounds and musical highlights of the recital pieces.

Mary Mccarthy Writes Her Truth: Memories Of A Catholic Girlhood And The Expansion Of The Autobiographical Tradition, Roxanne H. Hughes

Dissertations and Theses @ UNI

Modernist and postmodernist writer Mary McCarthy was a unique feminist writer. Throughout her writing career, which spanned nearly fifty years, McCarthy authored three autobiographical volumes, nine volumes of fiction, two books about art, and numerous essays and reviews. Regardless of the critical response to her writing, McCarthy wrote her truth her way. McCarthy did not capitulate to traditional patriarchal notions of autobiographical content and form; rather, she challenged patriarchal autobiographical traditions in her texts. This thesis examines McCarthy's first autobiographical volume, the 1957 Memories of a Catholic Girlhood, which describes McCarthy's orphanhood in post-World War I America. The introductory chapter …

Review Of Unobtrusive Evaluation Of Reference Service And Individual Responsibility: The Canadian Experience By Juris Dilevko, W. Bede Mitchell

University Libraries: Faculty Publications

This review was published in College and Research Libraries.

Part 1: Economic Performance And Per Capita Income: The Inside Story, Regional Studies Institute, Old Dominion University

State of the Region Reports: Hampton Roads

It’s true the region’s per capita income trails national averages, but much of the gap between Hampton Roads and the nation disappears when cost of living differentials are taken into account. Further, the region’s per capita income gap may not be due so much to lagging wage rates, but rather to much lower levels of business income and wealth for Hampton Roads as compared to other regions.

Comparison Of Reading Levels Of Students In A Computer Assisted Instructional Reading Program To Students In A Traditional Reading Program, Raquel Chin

Abraham S. Fischler College of Education ETD Archive

The problem for this study was no available data documenting the impact of the computer assisted instruction (CAI) program on the reading levels of students in Pines Middle School's eighth grade reading program. Previous studies have suggested that students in CAI reading programs do increase their reading levels.

The research question for this study was "Will students participating in the computer assisted instruction reading program achieve significantly higher reading levels, as determined by the STAR assessment, than students instructed in the traditional reading program?" The quasi-experimental research methodology was applied because the investigator compared treatment effects in a setting that …

Development Of A Process For Evaluating Locomotive Engineer Classroom Training At Amtrak, John A. Ward

Abraham S. Fischler College of Education ETD Archive

Amtrak did not have a written process for evaluating its locomotive engineer classroom-training programs. The purpose of this study was to develop a process based on relevant literature, evaluation models of other railroads, and feedback from formative and summative committees. There was one research question: What is an appropriate evaluation process to develop for the Amtrak locomotive engineer classroom-training programs?

The study followed eight procedures, including reviewing appropriate literature, drafting an evaluation process, obtaining feedback from formative and summative committees, and submitting the evaluation process to Amtrak. The evaluation process developed by the study resulted in two documents: policy and …

Laboratory Denitrification Using Sediments From The Elk Valley Aquifer, Alison E. Kammer

Theses and Dissertations

An experiment was conducted to determine if a decrease in the content of sulfides related to denitrification could be measured in the laboratory using sediments of the Elk Valley Aquifer in eastern North Dakota. The experiment entailed analyzing sediments for sulfides and solid organic carbon and isolating them in sample containers with a nitrate solution to determine if a measurable decrease in these components could be observed.

Previous denitrification studies in the Elk Valley Aquifer showed an increase in sulfate in conjunction with a decrease in the concentration of nitrate. Sulfate is a by product of autotrophic denitrification where sulfide …

Jones V. Clinton: A Study In Politically Motivated Suits, Rule 11, And The First Amendment, Carol Rice Andrews

Articles

No abstract provided.