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Retrospective Theses and Dissertations

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Full-Text Articles in Social and Behavioral Sciences

Decision Making Limitations From Communication Barriers In Government Structures In Chinese Rural Energy Projects, Nathan Gregory Johnson Jan 2008

Decision Making Limitations From Communication Barriers In Government Structures In Chinese Rural Energy Projects, Nathan Gregory Johnson

Retrospective Theses and Dissertations

Field research was conducted in the Li Cheng District (about 1,200 km 2) of Shan Dong Province. Data collection occurred during a two-week period in July 2006. At that time, seven villages represented all relevant sites in the district that contained gasification technologies. Small-group interviews with village leaders, station managers, and community members were conducted locally. Contact with external government agencies and technology scientists completed the set of potential stakeholders.;This study analyzes the failure of state-owned energy development initiatives in China. Communication barriers in bureaucratic structures and culturally prescribed patterns of interaction were revealed as inhibiting information transfer ...


Peasant Communities, The First Link Of The Commodity Chain Of Vicuña Fiber, Liliana L. Lay Lisung Jan 2008

Peasant Communities, The First Link Of The Commodity Chain Of Vicuña Fiber, Liliana L. Lay Lisung

Retrospective Theses and Dissertations

Vicuna fiber has a high value in the textile and fashion industry and is seen on the runways of the most selective and luxurious clothing designers in Europe. However, the vicuna fiber process and commodity chain are little known. This thesis presents the commodity chain of vicuna fiber and the positive and negative impacts that vicuna fiber commercialization generates in Peruvian peasant communities. The research, based on in-depth interviews and document analysis, studies the development of this buyer-driven chain, the social actors' roles, and the policies and legislation implemented to preserve vicuna species. In response to consumption demands, the marketing ...


The Development Of A Case Based Reasoning Tool For High-Speed Signalized Expressway Intersections In The State Of Iowa, Josh Nicholas Hinds Jan 2008

The Development Of A Case Based Reasoning Tool For High-Speed Signalized Expressway Intersections In The State Of Iowa, Josh Nicholas Hinds

Retrospective Theses and Dissertations

The safety of signalized expressway intersections has been the focus of prior research. These efforts have yielded results that were either inconclusive or required further investigation. This thesis presents the application of case-based reasoning to the issue. Similar intersections and crash reduction factors (CRFs) are used to establish expected crash performance for a candidate intersection. A spreadsheet based tool is developed that compares candidate intersections to these comparison sites. The tool uses expert opinions, attribute weights, and crash reduction factors to assist in the decision to signalize a site, to compare performance of existing signalized intersections to similar sites, or ...


Ethnic-Identity Intensity As A Moderator Of The Technology Acceptance Model And Its Antecedents, Marcus Anthony Alexander Jan 2008

Ethnic-Identity Intensity As A Moderator Of The Technology Acceptance Model And Its Antecedents, Marcus Anthony Alexander

Retrospective Theses and Dissertations

The goal of this dissertation is oriented to study the motivation of minorities to adopt and learn new, innovative technologies. The primary research question: is there some reason the African-American experience is driving certain sub-groups of the population to the wrong side of the digital divide? To examine this, I introduce ethnic identity as a moderating variable to a leftward extended technology acceptance model (TAM). Additionally, both components of the classic TAM (ease of use and usefulness) are divided into two antecedents: (1) ease of use - (a) trait efficacy and (b) state efficacy and (2) usefulness (completely replaced by) - (a ...


Gis Modeling Of Urbanization Impacts On Natural Resources, Dakota County, Minnesota, Lan Wei Jan 2007

Gis Modeling Of Urbanization Impacts On Natural Resources, Dakota County, Minnesota, Lan Wei

Retrospective Theses and Dissertations

This research focused on the impacts of urbanization in natural resources and land-cover changes due to urban development in Dakota County, Minnesota. An existing planning guide, the 2030 Regional Development Framework (2030 RDF) for the Twin Cities Metro Area, was analyzed and employed as a reference in this research. Geographic information systems (GIS) technology was used to help determine characteristics of urban land-cover changes, such as population change, land cover changes, and the environmental impacts on natural resources caused by urban development. Furthermore, land suitability modeling was utilized to analyze possible future development, from the perspectives of urban expansion and ...


Transportation Construction Administration, Cole Joseph Landau Jan 2007

Transportation Construction Administration, Cole Joseph Landau

Retrospective Theses and Dissertations

No abstract provided.


State Transportation Agencies' Utilization Of Work Zone Congestion Mitigation Strategies, Jonathan Devan Wiegand Jan 2007

State Transportation Agencies' Utilization Of Work Zone Congestion Mitigation Strategies, Jonathan Devan Wiegand

Retrospective Theses and Dissertations

Work zone congestion mitigation strategies are utilized by transportation agencies to reduce or eliminate congestion through a work zone as part of the project's Transportation Management Plan (TMP). The objective of this research is to assist agencies' strategy selection by identifying strategies used by State Transportation Agencies (STAs) nationwide and their experiences. A survey was developed to focus on STAs' current strategy implementation, past implementation, and future strategy research and objectives. STA respondents were asked questions concerning strategy implementation for projects similar to four developed scenarios: rural reconstruction, rural resurfacing, urban reconstruction and urban resurfacing projects. Other areas investigated ...


Effectiveness Evaluation Of The Hispanic Workforce Research Project (Hwrp), Fernando Aveiga Jan 2007

Effectiveness Evaluation Of The Hispanic Workforce Research Project (Hwrp), Fernando Aveiga

Retrospective Theses and Dissertations

Hispanics are a large and growing part of the United States workforce. Official projection state that by the year 2050 Hispanics will account for 25 percent of the population. For the Midwest in particular, the Hispanic population is expected to increase 35 percent by the year 2025. The construction industry is expected to experience greater percentage increase of its Hispanic population due to the labor intensive nature of the industry.;This study addresses the expected increase of Hispanic workers in the construction industry by investigating the best approaches for delivering training to construction crews with Hispanic workers as well as ...


An Analysis Of The Safety Effectiveness Of Pavement Marking Retroreflectivity, Daniel J. Ormand Jan 2007

An Analysis Of The Safety Effectiveness Of Pavement Marking Retroreflectivity, Daniel J. Ormand

Retrospective Theses and Dissertations

It has been shown in previous research that greater longitudinal pavement marking retroreflectivity levels increase drivers' visibility and detection distance. However, increased visibility may also cause drivers to feel too comfortable during nighttime conditions and drivers may then pay less attention and/or operate at unsafe speeds. Before-and-after studies have been conducted on pavement marking improvements such as repainting stripes or changing to a more durable marking material. Studies have also used models to estimate the retroreflectivity based on the date of installment, the vehicle exposure, or assumed a linear reduction in retroreflectivity over time. Only two studies have related ...


A Comparison Of Design-Bid-Build And Design-Build Project Delivery Methods On Military Construction Projects, Darren Dwayne Mcwhirt Jan 2007

A Comparison Of Design-Bid-Build And Design-Build Project Delivery Methods On Military Construction Projects, Darren Dwayne Mcwhirt

Retrospective Theses and Dissertations

The US Army Corps of Engineers has adopted the design-build project delivery method as a means to produce military facilities faster and cheaper. An analysis was conducted on 119 military construction projects executed by the US Army Corps of Engineers. While design-build awards may be made earlier in the delivery of military construction projects the design-build project delivery method was shown to have larger contract time growth compared to design-bid-build projects. Military design-build projects experienced a lower total cost of change orders as well as a reduced change order cost associated with field changes.;Finally, statistical analysis demonstrated that no ...


An Integer Programming Clustering Approach With Application To Recommendation Systems, Mujing Ye Jan 2007

An Integer Programming Clustering Approach With Application To Recommendation Systems, Mujing Ye

Retrospective Theses and Dissertations

Recommendation systems have become an important research area. Early recommendation systems were based on collaborative filtering, which uses the principle that if two people enjoy the same product they are likely to have common favorites. We present an alternative recommendation approach based on finding clusters of similar customers using integer programming model which is to find the minimal number of clusters subjected to several similarity measures. The proposed recommendation method is compared with collaborative filtering, and the experimental results show that it provides relatively high prediction accuracy as well as relatively small variance.


Existence And Uniqueness Of Cournot Equilibrium For An Oligopoly Under Linear And Nonlinear Demand: A Channel Model For One Manufacturer-Two Retailers With Substitutes, Nicholas Francis Kuennen Jan 2007

Existence And Uniqueness Of Cournot Equilibrium For An Oligopoly Under Linear And Nonlinear Demand: A Channel Model For One Manufacturer-Two Retailers With Substitutes, Nicholas Francis Kuennen

Retrospective Theses and Dissertations

This paper considers the margin, price, and quantity decisions made by one manufacturer and two retailers in a two-echelon supply chain under Cournot competition. The manufacturer produces two types of substitutable products and sells one product to each retailer. The retailers carry one type of product, which is sold to the customer. The objective of this paper is to show existence and uniqueness of Cournot equilibrium for decisions made by one manufacturer and two retailers and to study the implications of these decisions through sensitivity analysis. This paper has three main findings: (1) the retailer with the lower price effect ...


Effect Of Spatial Data Aggregation On Highway Safety Analysis , Justin Cooper Jackson Jan 2006

Effect Of Spatial Data Aggregation On Highway Safety Analysis , Justin Cooper Jackson

Retrospective Theses and Dissertations

In recent highway safety studies, there has been increasing attention to the accuracy and timeliness of crash data, but there have been limited studies on data aggregation. This thesis tests the effects of the underlying preprocessing of crash data for identifying high crash locations. The first portion of this thesis shows a sensitivity analysis of assigning crashes to intersections by spatial proximity and crash data attributes. In addition the sensitivity of using fixed length segmentation was tested along with the influence of using crash rate for identifying high crash locations.;The results indicate minimal effects of using different spatial proximities ...


Economic Efficiencies Of The Energy Flows From The Primary Resource Suppliers To The Electric Load Centers , Ana Margarida Quelhas Alves De Freitas Jan 2006

Economic Efficiencies Of The Energy Flows From The Primary Resource Suppliers To The Electric Load Centers , Ana Margarida Quelhas Alves De Freitas

Retrospective Theses and Dissertations

The economic efficiency of the electric energy system depends not only on the performance of the electric generation and transmission subsystems, but also on the ability to produce and transport the various forms of primary energy, particularly coal and natural gas. However, electric power systems have traditionally been developed and operated without a conscious awareness of the energy system-wide implications, namely the consideration of the integrated dynamics with the fuel markets and infrastructures. This has been partly due to the difficulty of formulating models capable of analyzing the large-scale, complex, time-dependent, and highly interconnected behavior of the integrated energy system ...


The Effectiveness Of Low-Cost Traffic Calming Applications Appropriate For Main Streets Through Rural Communities , Eric Randall Petersen Jan 2006

The Effectiveness Of Low-Cost Traffic Calming Applications Appropriate For Main Streets Through Rural Communities , Eric Randall Petersen

Retrospective Theses and Dissertations

County and state highways that enter small rural towns commonly become a major roadway through the community. These roadways typically have high speed limits outside of town and transition to a reduced speed limit through the community. Drivers that enter at high speeds and continue speeding throughout create unsafe conditions for residents and other drivers. When speeding becomes a problem, city officials often struggle to find solutions. Most traffic calming studies only focus on minor streets in large, urban areas. Therefore, city officials have little information about the effectiveness of rural traffic calming measures that are appropriate for major highways ...


Integration Of Remote Sensing And Crop Growth Modeling For Nitrogen Management Decision Support In Corn , Kelly Robert Thorp Jan 2006

Integration Of Remote Sensing And Crop Growth Modeling For Nitrogen Management Decision Support In Corn , Kelly Robert Thorp

Retrospective Theses and Dissertations

This dissertation describes efforts to move toward a completely integrated remote sensing and crop growth modeling tool for developing precision nitrogen management recommendations for corn. Aerial hyperspectral remote sensing imagery collected throughout the 2004 growing season was used to estimate corn plant stand density, and a machine vision system was used to map corn population on the ground. Multiple linear regression analysis was used to assess the ability of all combinations of three reflectance bands to estimate corn plant population at resolutions of 2 m, 6 m, and 10 m. Coefficients of multiple determination of up to 0.82 were ...


Communication Practices Of Women In Undergraduate Engineering Classes , Sarah Michelle Brown Jan 2006

Communication Practices Of Women In Undergraduate Engineering Classes , Sarah Michelle Brown

Retrospective Theses and Dissertations

Communication Practices of Women in Undergraduate Engineering Classes explores ways in which women and men communicate in undergraduate engineering classes and ways to better attract and retain women in engineering programs. The data, gathered over three semesters, include classroom observations, surveys, and interviews. Seven classes were analyzed: four in engineering, two in history, and one in food science. This thesis brings together three articles written for various academic audiences: engineering education, leadership, and women's studies. The individual articles focused on (1) class participation, leadership, and negative behavior in undergraduate engineering classes, (2) leadership styles of women and men, and ...


Speed Metrics And Crash Risks: Statistical Assessment And Implications For Highway Safety Policy , Thomas Brooks Stout Jan 2005

Speed Metrics And Crash Risks: Statistical Assessment And Implications For Highway Safety Policy , Thomas Brooks Stout

Retrospective Theses and Dissertations

This dissertation explores the relationships between measures of crash occurrence, the crash rate and the crash density, and various parameters of speed distributions as measured utilizing automatic traffic recorders (ATR) on highways in Iowa, with special attention to the implications of the findings with regard to highway safety policies such as speed limits and their enforcement. The goal of the research was to determine if crash risk is more related to absolute speed or to some measure of variation of the speed distribution. Data on crashes were obtained from the Iowa DOT crash data base. Roadway segments were selected utilizing ...


Valuation And Investment Of Generation Assets , Wang Yu Jan 2005

Valuation And Investment Of Generation Assets , Wang Yu

Retrospective Theses and Dissertations

The re-regulation of electric power industry around the world has raised many new challenges for all stakeholders. This research is to valuate generation assets within re-regulated electricity markets, both in short-term and long-term. The focus is to valuate operation flexibility under market uncertainties from the viewpoint of a Generation Company (GENCO);This research proposes to model the movements of electricity markets with Hidden Markov Model (HMM) driven by underlying market forces. An electricity market is modeled as a dynamic system evolving over time according to Markov processes. At any time interval, the electricity market can be in one state and ...


Use Of Remote Sensing, Geographic Information Systems, And Spatial Statistics To Assess Spatio-Temporal Population Dynamics Of Heterodera Glycines And Soybean Yield Quantity And Quality , Antonio Jose De Araujo Moreira Jan 2004

Use Of Remote Sensing, Geographic Information Systems, And Spatial Statistics To Assess Spatio-Temporal Population Dynamics Of Heterodera Glycines And Soybean Yield Quantity And Quality , Antonio Jose De Araujo Moreira

Retrospective Theses and Dissertations

Soybean, Glycine max (L.) Merr., is an important source of oil and protein worldwide, and soybean cyst nematode (SCN), Heterodera glycines, is among the most important yield-limiting factors in soybean production worldwide. Early detection of SCN is difficult because soybean plants infected by SCN often do not exhibit visible symptoms. It was hypothesized, however, that reflectance data obtained by remote sensing from soybean canopies may be used to detect plant stress caused by SCN infection. Moreover, reflectance measurements may be related to soybean growth and yield.;Two field experiments were conducted from 2000 to 2002 to study the relationships among ...


The National Association Of Industrial Technology Certification Exam: Quality Control Assessment Using Item Response Theory And Classical Test Theory Methodologies , Douglas Lyle Mccue Jan 2003

The National Association Of Industrial Technology Certification Exam: Quality Control Assessment Using Item Response Theory And Classical Test Theory Methodologies , Douglas Lyle Mccue

Retrospective Theses and Dissertations

The purpose of this study was to analyze the quality of the National Association of Industrial Technology (NAIT) certification examination quality control section, which contains forty items, using the methodologies of classical test theory (CTT) and item response theory (IRT). The ultimate goal of this research project is to evaluate the quality control portion of the NAIT certification exam by looking at the questions or items for errors. The project goal through this analysis was to identify the item problems and make recommendations to correct them.;The following conclusions were made based on a moderate sample of 996 examinees: (1 ...


Evaluating Traffic Safety Network Screening: An Initial Framework Utilizing The Hierarchical Bayesian Philosophy , Michael David Pawlovich Jan 2003

Evaluating Traffic Safety Network Screening: An Initial Framework Utilizing The Hierarchical Bayesian Philosophy , Michael David Pawlovich

Retrospective Theses and Dissertations

Highway crashes result in over 40,000 deaths per year (500,000 worldwide). Their impact on the national economy is estimated at more than 230 billion dollars. Highway safety is the top priority of the United States Department of Transportation (US DOT). Funds dedicated to the problem are expected to increase substantially.;Highway safety is a multidisciplinary issue. An important tool is the safety improvement candidate location (SICL) list. SICL lists list high crash locations for potential mitigation. SICL lists are developed using crash data. Crash frequency, rate, or loss is used to rank the worst locations. Classical statistical techniques ...


Establishment Of A High Accuracy Geoid Correction Model And Geodata Edge Match , Ruifeng Xi Jan 2003

Establishment Of A High Accuracy Geoid Correction Model And Geodata Edge Match , Ruifeng Xi

Retrospective Theses and Dissertations

This research has developed a theoretical and practical methodology for efficiently and accurately determining sub-decimeter level regional geoids and centimeter level local geoids to meet regional surveying and local engineering requirements. This research also provides a highly accurate static DGPS network data pre-processing, post-processing and adjustment method and a procedure for a large GPS network like the state level HRAN project. The research also developed an efficient and accurate methodology to join soil coverages in GIS ARE/INFO.;A total of 181 GPS stations has been pre-processed and post-processed to obtain an absolute accuracy better than 1.5cm at 95 ...


Photogrammetry And Remote Sensing For Visualization Of Spatial Data In A Virtual Reality Environment , Dwipen Bhagawati Jan 2001

Photogrammetry And Remote Sensing For Visualization Of Spatial Data In A Virtual Reality Environment , Dwipen Bhagawati

Retrospective Theses and Dissertations

Researchers in many disciplines have started using the tool of Virtual Reality (VR) to gain new insights into problems in their respective disciplines. Recent advances in computer graphics, software and hardware technologies have created many opportunities for VR systems, advanced scientific and engineering applications being among them. In Geometronics, generally photogrammetry and remote sensing are used for management of spatial data inventory. VR technology can be suitably used for management of spatial data inventory. This research demonstrates usefulness of VR technology for inventory management by taking the roadside features as a case study. Management of roadside feature inventory involves positioning ...


Generation Planning For Electric Power Utilities Under Market Uncertainties: A Real Options Approach , Chung-Hsiao Wang Jan 2001

Generation Planning For Electric Power Utilities Under Market Uncertainties: A Real Options Approach , Chung-Hsiao Wang

Retrospective Theses and Dissertations

The generation business in the U.S. is currently undergoing a transition from a regulated monopoly toward an uncertain, competitive market. Under the competitive market, the price of electric power as well as the corresponding revenue may be much less certain than before. These market uncertainties have increased the significance of two critical factors in generation planning. These factors are financial risks and managerial flexibilities.;In order to quantitatively and objectively address these two factors in generation planning, in this dissertation, we design and analyze a series of mathematical models based on the real options approach for generation planning. Hence ...


Analysis Of Spatial Yield Variability And Economics Of Prescriptions For Precision Agriculture: A Crop Modeling Approach , Joel Obien Paz Jan 2000

Analysis Of Spatial Yield Variability And Economics Of Prescriptions For Precision Agriculture: A Crop Modeling Approach , Joel Obien Paz

Retrospective Theses and Dissertations

Non-uniformity of soil properties, soil moisture and rooting depth, and other factors such pest and disease pressures can cause significant soybean and corn yield variability within a field. In this study, two crop growth models were used to characterize factors that cause spatial yield variability in soybeans and corn, and to evaluate economic consequences of variable rate management prescriptions. Analysis of yield data from 224 grids within a 16-hectare field in Boone, Iowa focused on water stress effects using CROPGRO-Soybean and CERES-Maize models for soybean and corn, respectively. Water stress explained 69% of the variability in soybean, and population and ...


Auction Development For The Price-Based Electric Power Industry , Somgiat Dekrajangpetch Jan 1999

Auction Development For The Price-Based Electric Power Industry , Somgiat Dekrajangpetch

Retrospective Theses and Dissertations

The restructuring of the electric power industry is to move away from the cost-based monopolistic environment of the past to the priced-based competitive environment. As the electric power industry is restructuring in many places, there are still many problems that need to be solved. The work in this dissertation contributes to solve some of the electric power auction problems. The majority of this work is aimed to help develop good markets;A LaGrangian relaxation (LR) Centralized Daily Commitment Auction (CDCA) has been implemented. It has been shown that the solution might not be optimal nor fair to some generation companies ...


The Development Of A Computerized Version Of Vandenberg's Mental Rotation Test And The Effect Of Visuo-Spatial Working Memory Loading , Shawn Driftmier Strong Jan 1999

The Development Of A Computerized Version Of Vandenberg's Mental Rotation Test And The Effect Of Visuo-Spatial Working Memory Loading , Shawn Driftmier Strong

Retrospective Theses and Dissertations

This dissertation focused on the generation and evaluation of web-based versions of Vandenberg's Mental Rotation Test. Memory and spatial visualization theory were explored in relation to the addition of a visuo-spatial working memory component;Analysis of the data determined that there was a significant difference between scores on the MRT Computer and MRT Memory test. The addition of a visuo-spatial working memory component did significantly affect results at the .05 alpha level. Reliability and discrimination estimates were higher on the MRT Memory version. The computerization of the paper and pencil version on the MRT did not significantly effect scores ...


Quality Program Induced Change: Its Impact On Stress, Fear And Anxiety , Chester Douglas Ward Jan 1999

Quality Program Induced Change: Its Impact On Stress, Fear And Anxiety , Chester Douglas Ward

Retrospective Theses and Dissertations

Organizational change has historically been a stimulus for increased fear/anxiety. A precept of quality movement intervention, as conceived by Deming (1986)1 is that if the intervention is properly implemented there will be less fear within the organization. This investigation assesses the impact of level of quality program implementation, sex, years of employment (tenure), years of formal education, organization size, individual's age and job type on the level of fear/anxiety within the studied organizations. The level of quality program implementation was determined using an instrument developed for the purposes of this study. Fear/anxiety were assumed to ...


Perceptions Of The Feasibility Of Total Quality Management Theories And Methodologies In The Vocational Training System Of Taiwan, Republic Of China , Hsi-Kong Chin Wang Jan 1999

Perceptions Of The Feasibility Of Total Quality Management Theories And Methodologies In The Vocational Training System Of Taiwan, Republic Of China , Hsi-Kong Chin Wang

Retrospective Theses and Dissertations

The major purpose of this study was to design an instrument to measure the feasibility of implementing TQM (Total Quality Management) theories and methodologies in the vocational training system in Taiwan, R.O.C. as perceived by the instructors at the vocational training centers (VTCs) and the leaders of companies which have sent their employees to VTCs. Specifically, the goals of this study were to identify the degree of importance of teaching an established core body of knowledge in TQM concepts and skills to trainees, to find the level of preference for potential learning opportunities to improve instructors' knowledge of ...