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Articles 271 - 292 of 292
Full-Text Articles in Civil Engineering
Understanding The Impact Of Bead Type On Paint And Thermoplastic Pavement Markings, Joshua D. Hollingsworth
Understanding The Impact Of Bead Type On Paint And Thermoplastic Pavement Markings, Joshua D. Hollingsworth
Theses and Dissertations
Each year the United States spends approximately two billion dollars maintaining pavement markings. In addition, an impending Federal policy establishing a minimum retro-reflectivity value for pavement markings has driven asset managers to develop performance models to effectively and efficiently manage these high quantity, low cost assets. Research over the past decade has sought to identify and understand the many factors influencing pavement marking degradation. Despite the fact that reflective glass beads are foundational to pavement marking retro-reflectivity, little research has specifically considered the impacts of bead type. The purpose of this study is to quantify the impact that bead type …
Maintenance Operations Degradation Of Airfield Pavement Markings, John C. Jaszkowiak
Maintenance Operations Degradation Of Airfield Pavement Markings, John C. Jaszkowiak
Theses and Dissertations
Pavement markings are an essential element in the navigational aids subsystem for any airfield. Most airfields still use waterborne paint as the primary marking material, although there are other materials in use on roadways that airfield managers could use to save time and money. An airfield experiences a host of maintenance operations that cause degradation of the pavement markings. Of particular concern are rubber removal operations, sweeping operations, and snowplowing operations. This research focuses on chemical rubber removal operations and sweeping operations. The study evaluates waterborne paint markings and thermoplastic marking strips to determine if these marking materials perform differently …
Knowledge Transformation In The United States Air Force Civil Engineer Career Field: A System Dynamics Approach, Gregory J. Ward
Knowledge Transformation In The United States Air Force Civil Engineer Career Field: A System Dynamics Approach, Gregory J. Ward
Theses and Dissertations
Recent operations in Iraq and Afghanistan have brought the level of expeditionary contractors to historically unprecedented levels, altering the work composition for military engineers. The alteration has shifted emphasis from technical knowledge areas toward managerial knowledge associated with supervising the increased number of contractors. This research utilizes System Dynamics modeling to analyze this shift in the United States Air Force Civil Engineer officer career field and resulting transformative effect on career field knowledge levels, both technical and managerial. The model is then tested with multiple external policy adjustments in the areas of career field structure, training, and operating policy. Results …
Sensitivity Analysis And Calibration Of The Alligator Cracking Model In The Mechanistic-Empirical Pavement Design Guide Using Regional Data, Vivek Jha
Theses and Dissertations
The models used in the mechanistic-empirical pavement design guide (M-EPDG) were calibrated using the data from all across the United States. The alligator cracking model uses traffic, material and structural data along with local and global calibration factors to calculate the number of axles to failure and the damage index. Both of which are further used to calculate the fatigue cracking in the pavement with the help of regression coefficients and calibration constants. However, as these coefficients and constants were developed using the national database, the model might not predict the fatigue behavior of the pavement accurately for a particular …
Factors Leading To Effectiveness And Satisfaction In Civil Engineer Information Systems, Donald C. Crabtree
Factors Leading To Effectiveness And Satisfaction In Civil Engineer Information Systems, Donald C. Crabtree
Theses and Dissertations
The Air Force Civil Engineer Support Agency (AFCESA) has developed information systems in support of civil engineer operations. Over the last decade, the number of systems has grown to support the breadth of civil engineer functions. At this time, numerous (900+) decentralized systems support civil engineer functions around the world. Due to budget constraints, AFCESA is transforming civil engineer business processes to leverage the workforce in an optimized fashion. In support of this transition, AFCESA is posturing to acquire new information systems in support of civil engineer business processes. To help AFCESA improve upon its suite of information systems development …
Usable Design Of Civil Engineer Information Systems, Gunther Kastenholz
Usable Design Of Civil Engineer Information Systems, Gunther Kastenholz
Theses and Dissertations
This research used a case study methodology where one instrument used to collect data was a heuristic usability inspection method. Data was collected from a literature review of pertinent Civil Engineer information system design documents, and conclusions drawn about the existing level of specification of usability engineering principles. The heuristic usability inspection method was used to validate the conclusions drawn through inspection of an information system representative of other Civil Engineer information systems, the Automated Civil Engineer System Personnel Readiness module.
Evaluation Of Current Automated Civil Engineer System Non-Appropriated Funds Project Programming Procedures, Joshua C. Ligday
Evaluation Of Current Automated Civil Engineer System Non-Appropriated Funds Project Programming Procedures, Joshua C. Ligday
Theses and Dissertations
It is essential that businesses continually improve their automated information systems (AIS) to support the changing needs of the organization. The Air Force civil engineering organization is no exception since they have drastically improved their Automated Civil Engineer System (ACES) through end user support since its implementation in 2000. However, there are many problems associated with the non-appropriated funds (NAF) project programming business rules within ACES. These problem areas were not addressed until recently when an integrated process team met and proposed numerous changes to how NAF programming is accomplished in ACES. This research effort, through a web-based survey, focuses …
Analysis Of Air Force Civil Engineering Strategic Planning, Francis J. Mondo Jr.
Analysis Of Air Force Civil Engineering Strategic Planning, Francis J. Mondo Jr.
Theses and Dissertations
Several organizations within the Department of Defense, including the Air Force Civil Engineer, are actively engaged in strategic planning in an effort to create a roadmap for future capabilities and performance. The objective of this research was to analyze the strategic planning process of the Air Force Civil Engineer (CE) as well as the effectiveness of the Civil Engineer Strategic Plan (CESP). The methodology used to complete this analysis was conducted in two distinct phases: 1) process modeling and evaluation, and 2) performance measure evaluation. The first phase compared the CE strategic planning process to a theoretical planning model developed …
An Evaluation Of Facility Maintenance And Repair Strategies Of Select Companies, Christopher L. Sharp
An Evaluation Of Facility Maintenance And Repair Strategies Of Select Companies, Christopher L. Sharp
Theses and Dissertations
Although initial construction costs are high, the cost of operation and maintenance over a facilities life-cycle is significantly higher. A common challenge for facility maintenance professionals is balancing the cost of facility Maintenance and Repair (M&R) with the benefits derived from those facilities. This thesis documents how a selection of companies implemented that balance by determining their facilities requirements based on their chosen facility condition level and how they then allocated funds. The research effort consisted of interviews with facility maintenance professionals at each company selected. The data was then used to perform a multiple case study analysis and comparison …
An Evaluation Of Geobest Contingency Beddown Planning Software Using The Technology Acceptance Model, Shawn J. Jensen
An Evaluation Of Geobest Contingency Beddown Planning Software Using The Technology Acceptance Model, Shawn J. Jensen
Theses and Dissertations
GeoBEST is a software program designed to simplify the contingency beddown planning process through application of geographic information technology. The purpose of this thesis was to thoroughly evaluate GeoBEST using prospective GeoBEST users in a realistic beddown planning scenario. The Technology Acceptance Model (TAM) was applied, which measures a prospective user's perceptions of the technology's usefulness and ease-of-use and predicts their intentions to use the software in the future. The evaluations also included a qualitative evaluation of specific software features. The test group for this thesis was seventy-one Civil Engineering students attending contingency skills training at the Silver Flag training …
Decision Analysis With Value-Focused Thinking As A Methodology In Structuring The Civil Engineer Operations Flight, Dee Jay Katzer
Decision Analysis With Value-Focused Thinking As A Methodology In Structuring The Civil Engineer Operations Flight, Dee Jay Katzer
Theses and Dissertations
The civil engineer operations flight organizational structure has been in a state of change since the flight's inception and is currently prescribed only to the element level. Therefore, an operations flight commander must determine the organizational structure best suited for their unique situation without any guidance or support. To provide insight and defensible support for an operations flight commander faced with this decision, a value-focused thinking process was used to create a value model that aids in evaluating possible organizational structures. To ensure that the results of this research are applicable across the Air Force, the value model was created …
Evaluating Air Force Civil Engineer's Current Automated Information Systems, Edward P. Phillips
Evaluating Air Force Civil Engineer's Current Automated Information Systems, Edward P. Phillips
Theses and Dissertations
Almost every organization has some form of information system where data is captured and stored for later use. The Air Force civil engineering organization is no exception and is in the process of transitioning from the Interim Work Information Management System (WIMS) to the Automated Civil Engineer System (ACES). This research focused on users perceptions of both database and data importance to determine if significant differences existed between various user sub-groups. The research also attempted to identify the most frequently reported problems regarding system usage. The methods of analysis of variance and content analysis were used to answer the research …
Evaluation Of Civil Engineering Operations Flight Competitive Sourcing Standards And Metrics, Ty A. Randall
Evaluation Of Civil Engineering Operations Flight Competitive Sourcing Standards And Metrics, Ty A. Randall
Theses and Dissertations
The Performance Work Statement (PWS), which defines the requirements and shapes the outcome of the activity under contract, and the Quality Assurance Surveillance Plan (QASP), which is vital in identifying what is to be evaluated, become critical documents as the Air Force enters into more competitive sourcing contracts. Currently, contractors and Most Efficient Organizations (MEO) are evaluated by the QASP based upon the requirements found in the PWS. It is imperative the PWS and QASP documents have adequate performance metrics and that they are applied appropriately to evaluate the contractor or MEO. This research collected PWS and QASP documents from …
Comparative Energy And Cost Analysis Between Conventional Hvac Systems And Geothermal Heat Pump Systems, David D. Vanderburg
Comparative Energy And Cost Analysis Between Conventional Hvac Systems And Geothermal Heat Pump Systems, David D. Vanderburg
Theses and Dissertations
To sustain the United States current affluence and strength, the U.S. Government has encouraged energy conservation through executive orders, federal and local laws, and consumer education. A substantial reduction in U.S. energy consumption could be realized by using geothermal heat pumps to heat and cool buildings throughout the U.S., though initial installation cost are a deterrent. This thesis uses Monte Carlo simulation to predict energy consumption, life cycle cost and payback period for the vertical closed-loop ground source heat pump (GSHP) relative to conventional heating ventilation and air conditioning (HVAC) systems: air-source heat pumps (ASHP), air-cooled air conditioning with either …
An Analysis Of Civil Engineer Officer Contingency Training, Rusty J. Vaira
An Analysis Of Civil Engineer Officer Contingency Training, Rusty J. Vaira
Theses and Dissertations
The primary objective of this research was to investigate the current overall civil engineer officer contingency training program and determine if civil engineer officers think it is adequately preparing them to perform in a contingency environment. In accomplishing this objective, this research explored the perceptions that officers have about the contingency training that is available through three primary training programs (Home Station Training, Silver Flag training, and Civil Engineer and Services School training). The overall intent of the author was to gauge how the officers feel about their contingency training and offer some suggestions on how to improve the training. …
Differences In Civil Engineer Perceptions Of Change Based On Prior Training And Experience, Steven W. Lo
Differences In Civil Engineer Perceptions Of Change Based On Prior Training And Experience, Steven W. Lo
Theses and Dissertations
The Department of Defense (DoD) and the United States Air Force (USAF) have moved toward an aggressive stance to competitively source and privatize (CS&P) support functions as much as possible. This move is intended to shrink support costs and redirect the savings to force and equipment modernization. In addition, the USAF hopes to realize improved services, gain access to technology, share risks with contractors, and allow its forces to focus on the core competencies. In order to implement OS&P, the USAF communicates information through two major pathways, passive and active. Passive communication is similar to traditional classroom learning where information …
The Influence Of Outsourcing On Job Satisfaction And Turnover Intentions Of Air Force Civil Engineer Company Grade Officers, James F. Kennedy
The Influence Of Outsourcing On Job Satisfaction And Turnover Intentions Of Air Force Civil Engineer Company Grade Officers, James F. Kennedy
Theses and Dissertations
A survey was distributed to 865 active duty Air Force Civil Engineer company grade officers (CGOs) assigned to locations throughout the world. The survey was designed to assess the CGOs' current job satisfaction and their intentions towards making a career out of the Air Force. Additionally, the survey measured the CGOs' perceptions of outsourcing, and how they feel that it will influence the Civil Engineer career field. Relationships were evaluated between the perceptions of outsourcing and job satisfaction, and between job satisfaction and turnover intentions. Overall, Civil Engineer CGOs reported a slightly positive level of satisfaction and a negative perception …
Empirical Evaluation Of The Civil Engineer Career Pyramid And Career Guidance, Travis K. Leighton
Empirical Evaluation Of The Civil Engineer Career Pyramid And Career Guidance, Travis K. Leighton
Theses and Dissertations
Air Force civil engineer officers rely on published guidance to assist in establishing their career objectives. This thesis uses empirical data to evaluate the published Air Force career guidance. The data set is comprised of complete duty histories from all active duty lieutenant colonels in the civil engineer career field. The guidance implies a career path to become a civil engineer squadron commander but provides no empirical validation. This thesis follows a rigorous procedure to objectively evaluate the Air Force guidance. The guidance is translated into 24 research questions based on its main tenets. Each duty occurrence is categorized by …
Exploring The Management Of Outsourcing And The Determination Of Civil Engineering Minimum Manning Numbers In Order To Optimize Air Force Benefits, David J. Anason
Exploring The Management Of Outsourcing And The Determination Of Civil Engineering Minimum Manning Numbers In Order To Optimize Air Force Benefits, David J. Anason
Theses and Dissertations
This thesis investigates the relationship between peacetime and wartime tasks for Air Force Civil Engineering career fields in regard to outsourcing. Relevant literature in civilian sector outsourcing techniques is then studied to determine how they decide on what to outsource and what to keep insourced. Peacetime tasks performed by individual career fields are correlated with the wartime tasks to determine if there is any valuable wartime training gained from the completion of peacetime work orders. Several interviews completed with Air Force Civil Engineer readiness experts to evaluate an importance factor for each career field wartime mission. This importance factor and …
The Determinants Of Locational Choice For Air Force Military Renters: Implications For Policy, Eldrick L. Hill
The Determinants Of Locational Choice For Air Force Military Renters: Implications For Policy, Eldrick L. Hill
Theses and Dissertations
Housing allowances and military family housing make up approximately $7 billion dollars of the budget for the Department of Defense (DoD). The military uses a Housing Market Analysis (HMA) to determine rental housing availability around its installations. This thesis describes and analyzes the locational choices of military renters. This thesis examines 16 bases in the continental U.S. using military and census data. It is concluded that the locational preferences of military renters vary inversely with distance from their duty location and this needs to be accounted for when assessing the availability of military rental housing. The implications of military renter …
An Expert System For The Civil Engineering In-Service Work Plan, Philip W. Melancon
An Expert System For The Civil Engineering In-Service Work Plan, Philip W. Melancon
Theses and Dissertations
Civil Engineering managers make many decisions each day which could be aided using expert system technology. One of the most important decision processes affecting CE operations is the scheduling of work order to be accomplished each month. A good work order schedule, or In-Service Work Plan (IWP), can ensure that material and manpower resources are fully utilized, that base facilities are properly maintained, and that customers are satisfied. The purpose of this research was to build and test a PC-based prototype expert system to schedule the IWP. Expanding on previous research, a multiplicative weighting technique was developed to provide relative …
Applying The Theory Of Constraints To A Base Civil Engineering Operations Branch, Bryan K. Zachmeier
Applying The Theory Of Constraints To A Base Civil Engineering Operations Branch, Bryan K. Zachmeier
Theses and Dissertations
The purpose of this thesis is to introduce the Civil Engineering manager to the Theory of Constraints management philosophy and to show how to apply this process of ongoing improvement to the Operations Branch. One of the reasons for the success of Theory of Constraints in commercial firms is that it provides all levels of management the ability to find simple solutions for bridging the gap between local and global issues. This 'bridge' is built by clearly defining the goal of the organization and using performance measurements capable of predicting the effect of local decisions and actions on the goal. …