Digital Commons Network^™

Optimizing Multiagent, Multi-Injected Swell Modifier, Marshall B. Addison, Thomas M. Petry

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Interactions of expansive clay soils with transportation facilities have caused billions of dollars of damage. In the process of determining agents and methodologies to overcome expansive clay behavior, multiple injections of chemical agents into the subgrade to modify clay behavior are most promising. A study was conducted to optimize a potassium-rich solution of four parts. The modifying solution has been injected into expansive clay subgrades with success since the early 1970s. A laboratory methodology was developed to inject specimens multiple times and to conduct swell tests. Screening tests were conducted to evaluate linear effects that each of the four constituents …

Hybrid Control Of Seismic Structures With Optimal Placement Of Control Devices, Franklin Y. Cheng, Hongping Jiang

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

A theoretical study is carried out for optimal controller placement and effectiveness of a hybrid seismic response control system comprising a viscous fluid damper and a servovalve-controlled hydraulic actuator. A stochastic seismic response of controlled structures is first investigated with nonorthogonal damping and stiffness; then a statistical method for optimal placement of control devices on seismic-resistant structures is developed. With such placement, a hybrid system can achieve greater performance in that much less control force is required to reduce structural seismic response to a given level. This study also shows the hybrid system is superior to both active and passive …

Recent Research And Developments In Cold-Formed Steel Framing, Roger A. Laboube, Wei Wen Yu

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Recent research studies at the University of Missouri-Rolla (UMR) have focused on developing a better understanding of the behavior of cold-formed steel members and truss assemblies. This research was initiated by the more widespread use of cold-formed steel in the residential construction market, and the need to provide structurally reliable, as well as highly economical design solutions. Steel trusses are commonly assembled using C-shaped sections and self-drilling screws. Based on UMR findings, appropriate design recommendations have been proposed for the web and chord members of a truss. Also of concern is the introduction of large holes in the webs of …

The Future Of Limited Liability Companies For Business And Estate Planning Purposes In Mississippi, J. Larry Lee

MC Law Review

No abstract provided.

Young V. Fordice: Challenging Dual Registration Under Section 5 Of The Voting Rights Act, Brenda Wright

MC Law Review

Symposium - An Analysis of Mississippi Cases Argued before the United State Supreme Court

Characterization Of Generalized Haar Spaces, M. Bartelt, W. Li

Mathematics & Statistics Faculty Publications

We say that a subset G of C₀(T, ℝ^k) is rotation-invariant if [Qg: g ∈ G]=G for any k x k orthogonal matrix Q. Let G be a rotation-invariant finite-dimensional subspace of C₀(T, ℝ^k) on a connected, locally compact, metric space T. We prove that G is a generalized Haar subspace if and only if P_G(ƒ) is strongly unique of order 2 whenever P_G(ƒ) is a singleton.

Employee Expectations And Job Stress: A Study Of Attrition In The Employment Of Telemarketers, Jeff Cooper

Dissertations and Theses @ UNI

The present study investigated the factors associated with the extremely high attrition rate of a large midwestern telemarketing firm. Factors associated with employee expectations, stressful organizational characteristics, and job satisfaction were explored. The research strategy involved multiple questionnaires, dissatisfaction surveys, and a semi-structured interview, that were developed by the researchers based on information obtained from the company. Current and former employees of the company participated in the study. Results indicated the presence of stressful organizational characteristics that were common between current and former employees. Sale conversion rate pressure from supervisors and inadequate training were identified as the most salient factors …

Graduate Recital In Voice, Paul Huber

Dissertations and Theses @ UNI

In partial fulfillment of the Master of Music degree requirements for performance, I performed a recital on Monday, October 26, 1998, in the Russell Hall Auditorium at the University of Northern Iowa. The recital consisted of three art songs by Gaetano Donizetti, a selection of art songs from Franz Schubert's Schwanengesang, Samuel Barber's Dover Beach, and Maurice Ravel's Don Quichotte á Dulcinee.

Gangs, Drugs, And Delinquency, Tina Renea Engstrom

Dissertations and Theses @ UNI

The main objective of this thesis is to study the link between gangs, drug use, and delinquency. Previous literature suggests that social learning and social control theories commonly provide theoretical contexts for explaining deviant behavior. The present research applies the principles of Sutherland's (1949) theory of differential association and Hirschi' s (1969) theory of social control to the delinquent behavior of gang members and their drug involvement. The present study does not attempt to explain why youths become gang members. Rather, this research uses an integration of social learning and social control theories to explain why gang members become involved …

Free To Choose, Randy E. Barnett

Georgetown Law Faculty Publications and Other Works

No abstract provided.

Database Security: Evaluation Of A Multi-Policy Access Control Model, Fei Dong

Dissertations and Theses @ UNI

As an increasing number of organizations become dependent on access to their data stored in the database, the need for adequate security measures is becoming more and more critical. Enforcing data protection means safeguarding data from unauthorized or improper disclosures or modifications. Access control policies should be independent of the mechanisms that will implement the physical control of access: this allows control mechanism to be available for different policies. Although considerable work was done on access control models and related mechanisms for databases (Castano & Fugini, 1994), current access control models and mechanisms are not flexible enough to meet the …

Recycling Economic Development: Observing The Wage And Occupational Structure Of The Plastics Industry, Dawn Marie Dungan

Dissertations and Theses @ UNI

This thesis provides an exploratory analysis of the occupational and wage structures of a predefined set of plastics companies in Iowa. Characteristics of the occupational and wage structures of recycling and nonrecycling based companies in the plastics industry in Iowa were compared to a standard established by the 1992 Iowa Statewide Wage Survey. The theory of the diminishing middle was used as the guiding framework from which to draw assumptions. The plastics industry was defined as all companies in the state of Iowa engaging in any combination of collection, processing, or manufacturing of recycled or raw plastic products for economic …

An Integrated Approach To Determining The Sequence Of Machining Operations For Prismatic Parts With Interacting Features, Alan C. Lin, Shou Yee Lin, Das Diganta, Wen F. Lu

Mechanical and Aerospace Engineering Faculty Research & Creative Works

This paper proposed a framework for integrating artificial intelligence (AI) techniques and mechanistic models in the task of generating process plans for prismatic parts. The main issue of process planning addressed in this paper is the determination of the operation sequence for mechanical parts containing interacting features where machining of one feature might adversely affect the surface quality of other features. The informed graph-search strategy in AI is used to achieve the function of operation sequence planning. The search graph is built by considering alternative machining operations in converting a blank stock into the final part configuration. Several heuristic functions …

Sensory Changes In Adults With Unilateral Transtibial Amputation, Judith B. Kosasih, Barbara Silver-Thorn

Biomedical Engineering Faculty Research and Publications

The purpose of this study was to describe the sensory changes in adults with unilateral transtibial amputation

(TTA), as any loss of sensation may have significant impact on the successful use of a prosthesis. Sensory modalities of light touch, deep pressure, vibration, and superficial pain (pinprick) were examined on the residual and contralateral limbs of 16 veterans with TTA. Six subjects demonstrated normal sensation on the contralateral limb and impaired sensation of superficial pain, vibration, and/or light touch on the residual limb. Superficial pain was the most frequently impaired sensation, and vibration and superficial pain sensation appeared to be age-dependent, …

Progress Closed Cases In The Third Quart_1997, Adelamar N. Alcantara

BBER Publications

This report presents findings from a statewide survey of former New Mexico PROGRESS welfare recipients whose cases closed during the third quarter of 1997, examining employment outcomes, income, medical insurance coverage, government assistance, and reasons for leaving or returning to public assistance. The study provides detailed demographic and socioeconomic analyses of welfare-to-work transitions and the experiences of households after exiting cash assistance programs.

Review Of The Evolution Of The American Academic Library Building By David Kaser, W. Bede Mitchell

University Libraries: Faculty Publications

This review was published in College and Research Libraries.

Effects Of Physical And Chemical Properties Of Bright And Dull Coal Lithotypes On The Formation Of Char Particles, Chad G. Tomforde

Theses and Dissertations

The Energy and Environmental Research Center is working with EPRI and a consortium of companies in partnership with DOE to determine factors causing sticky ash to blind or bridge hot-gas cleanup filters. In this study, bright and dull lithotypes were separated from bituminous, subbituminous and lignitic coals to determine physical and chemical properties that may lead to the formation of different charforms, and consequently, fine and sticky ash that is problematic in coal-fired combustion systems.

Proximate and ultimate, maceral, and energy dispersive X-ray fluorescence (EDXRF) analyses were used to characterize each lithotype. A bench-scale pressurized fluidized-bed reactor (PFBR) was used …

Determining Capture Zones For Three-Dimensional, Heterogeneous, Anisotropic Aquifers By Monte Carlo Analysis, Jon Paul Jones

Theses and Dissertations

Most methods of delineating capture zones for pump-and-treat remedial design and wellhead protection assume a two-dimensional, homogeneous aquifer. Aquifers, however, are three-dimensional and heterogeneous, thereby introducing uncertainty in capture zone analysis. This study used a Monte Carlo analysis of three sets of statistical parameters defining aquifer heterogeneity. Each set had a different variance for the mean natural log hydraulic conductivity, which varied among the sets by a factor of four. The ensemble means of the capture zones for each set were estimated from 10 randomly generated fields with 12 layers each which were superimposed on each other for a total …

Methods For Predicting Shale Durability In The Field, Paul Michael Santi, Jerry D. Higgins

Geosciences and Geological and Petroleum Engineering Faculty Research & Creative Works

Durability of shales and other weak rock is an important parameter describing the material's susceptibility to breakdown upon exposure to water or during construction work. While laboratory methods have been developed to measure durability, no correlations between laboratory results and simple field tests have been determined. The results of this study show that certain field parameters can predict slake durability with acceptable accuracy. The recommended field tests, in order of desirability, are slake index, jar slake, hammer rebound, and NGI "Q" value. Single variable and multiple variable linear regression equations are given, including equations conservatively modified so that 95% of …

Symposium Introduction Symposium: 1998 Southeast/Southwest Law Teachers Of Color Conference: Introduction, Steven H. Hobbs

Articles

No abstract provided.

Latino And Latina Critical Theory: An Annotated Bibliography Latcrit: Latinas/Os And The Law: A Joint Symposium By California Law Review And La Raza Law Journal: Policy, Politics, And Praxis, Jean Stefancic

Articles

No abstract provided.

Rodrigo's Committee Assignment: A Skeptical Look At Judicial Independence Judicial Independence And Accountability Symposium, Richard Delgado

Articles

No abstract provided.

Rodrigo's Roadmap: Is The Marketplace Theory For Eradicating Discrimination A Blind Alley, Richard Delgado

Articles

No abstract provided.

Making Pets: Social Workers, Problem Groups, And The Role Of The Spca--Getting A Little More Precise About Racialized Narratives Commentary, Richard Delgado

Articles

No abstract provided.

1998 Hugo L. Black Lecture: Ten Arguments Against Affirmative Action--How Valid Lecture, Richard Delgado

Articles

No abstract provided.

Listening To The Sounds Of Sovereignty But Missing The Beat: Does The New Federalism Really Matter Symposium: National Power And State Autonomy Calibrating The New New Federalism, Ronald J. Krotoszynski Jr.

Articles

No abstract provided.

Constitutional Flares: On Judges, Legislatures, And Dialogue, Ronald J. Krotoszynski Jr.

Articles

No abstract provided.

In Defense Of Recoupment: Why Setoff Of Prepetition Utility Deposits Against Prepetition Debt Is Not Subject To The Automatic Stay, Gary E. Sullivan

Articles

No abstract provided.

When Does Private Discrimination Justify Public Affirmative Action, Ian Ayres, Fredrick E. Vars

Articles

No abstract provided.

A Qualitative Study Of Dietetic Students Completing Internship In A Dietetic Technician Program, Sharon Spicer Stewart

Theses and Dissertations

The purpose of this study was to explore the view of dietetic students and their preceptors concerning the supervised practice experience. Guiding questions for this study were: (1) dynamics of learning in the work place setting, (2) dietetic students' technical ability to complete the activities expected of them in the work place, (3) dietetic students' socialization into the field site experience, including how well the students were accepted by other staff, (4) expectations of the preceptor prior to working with student dietetic technicians, (5) students' and preceptors' expectations of the DT program coordinator, (6) students' and preceptors' satisfaction with the …