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Articles 1 - 12 of 12
Full-Text Articles in Engineering
Air Force Project Risk Management – The Impact Of Inconsistent Processes, Eric J. Perez
Air Force Project Risk Management – The Impact Of Inconsistent Processes, Eric J. Perez
Theses and Dissertations
On the surface, the majority of Air Force units appear to be executing some form of project risk management (PRM). Deeper investigation exposes many of the PRM practices currently in place to often be ad hoc, and as such, have the potential to poorly inform decisions when risk data is escalated to the enterprise levels of the Air Force. Resultantly, there is inconsistency between the PRM processes practiced by Air Force units. This inconsistency is an indication of risk mishandling at the project level and erroneous risk data provided at the enterprise levels of the Air Force. It may be …
Application Of Executable Architecture In Early Concept Evaluation Using The Dod Architecture Framework, Zhongwang Chua
Application Of Executable Architecture In Early Concept Evaluation Using The Dod Architecture Framework, Zhongwang Chua
Theses and Dissertations
The increasing complexity in the development of today's modern warfighting systems demands a systematic evaluation approach in the assessment of the envisaged capability and estimating the cost effectiveness, especially in the early stages of Concept Development. This research focused on the development of early Concept evaluation methodology through the use of Executable Architecture (EA) through the System Architecting process. Particularly, the methodology was applied in the assessment of a proposed Multi-tiered Unmanned Aircraft System System-of-System that is designed provide target acquisition and conduct dynamic strike on Theater Ballistic Missile launchers. Through the implementation of the evaluation methodology using dynamic modeling …
Conceptual Architecture To Measure The Effects Of Subauroral Polarization Streams On Radar Operations, Shayla K. Redmond
Conceptual Architecture To Measure The Effects Of Subauroral Polarization Streams On Radar Operations, Shayla K. Redmond
Theses and Dissertations
This thesis provides the initial conceptual development of taking into account subauroral polarization streams when preparing for a radar operation. The DoDAF views created to portray the architecture consisted of operational, capabilities, data and information, and finally system views to ensure consistency and realistic outcomes. OV-2 was the significant view because it set the baseline for required actions necessary for the proposed results the Flow Integration of Ionospheric Activity and Radar Evaluation (FIIARE) system would produce. FIIARE is a computer based system concept that performs consolidations and produce predictions using algorithms from the International Reference Ionosphere (IRI). The data portrayed …
Efficient Employment Of Large Format Sensor Data Transfer Architectures, Jeffrey R. Oltmanns
Efficient Employment Of Large Format Sensor Data Transfer Architectures, Jeffrey R. Oltmanns
Theses and Dissertations
Due to the increasing quantity of data collected by Air Force intelligence, surveillance and reconnaissance (ISR) assets and the focus on timely access to the data collected by these systems, operational data transfer network architectures have become a critical component of their employment in the intelligence production process. Efficient utilization of the provided long-haul communications component of the ISR system improves the value of the single asset to the warfighter and enables connectivity of additional assets via the data transfer network architecture. This research effort focused on the creation and implementation of a structured test design methodology based on the …
Unmanned Aerial Vehicle (Uav) Operators’ Workload Reduction: The Effect Of 3d Audio On Operators’ Workload And Performance During Multi-Aircraft Control, Sungbin Kim
Theses and Dissertations
The importance and number of Unmanned Aerial Vehicle (UAV) operations are rapidly growing in both military and civilian applications. This growth has produced significant manpower issues, producing a desire that multiple aircraft are controlled by a single operator as opposed to the current model where one aircraft may require multiple operators. A potential issue is the need for an operator to monitor radio traffic for the call signs of multi-aircraft. An investigation of the use of 3D sound was undertaken to investigate whether an automatic parser, which preselected the spatial location of relevant versus irrelevant call signs, could aid UAV …
Lifecycle Cost Evaluation Of Flexible Facility Designs, Trevor P. Ellis
Lifecycle Cost Evaluation Of Flexible Facility Designs, Trevor P. Ellis
Theses and Dissertations
The purpose of this research is to ascertain the type of facility design, standard, robust, or flexible, that yields the greatest lower lifecycle costs (LCC) savings to the USAF. To this aim, the researcher constructed a Monte Carlo simulation to determine the LCC for flexible, robust, and standard administrative facility designs for thousands of potential facility lifecycles. The simulation also illustrates the circumstances under which each type of design would result in the lowest LCC. The results of this research will show the USAF the importance of focusing on LCC and designing flexible facilities. Standard and robust designs are the …
The Efficacy Of Implementing A Small, Low-Cost, Real Time Kinematic Gps System Into A Small Unmanned Aerial System Architecture, Kevin J. Hendricks
The Efficacy Of Implementing A Small, Low-Cost, Real Time Kinematic Gps System Into A Small Unmanned Aerial System Architecture, Kevin J. Hendricks
Theses and Dissertations
Along with the growing uses for small unmanned aerial systems (UAS) within the Department of Defense (DoD), is the utility of small UAS within the civilian market is also increasing. This has led to significant research and development on small UAS subsystems by the commercial market. The focus of this research is characterizing and investigating the application considerations of a small, low-cost real time kinematic (RTK) GPS receiver system. Work was also accomplished to characterize the accuracy and precision of the commonly used GPS receiver subsystem in small UAS to show the increased utility of the RTK GPS system. The …
Application Of System Engineering Leading Indicators To Scrum Agile Projects, Eric M. Shirley
Application Of System Engineering Leading Indicators To Scrum Agile Projects, Eric M. Shirley
Theses and Dissertations
SCRUM Agile metrics and System Engineering Leading Indicators (SE LIs) are measures used to evaluate the effectiveness and performance of a project across its lifecycle. The application of metrics can provide information on both internal resources and external project stakeholder requirements and constraints, showing past changes, trends, and potential future impacts. Both SCRUM Agile and SE LIs are designed to give a systems engineer/project manager insight into development progress allowing for progress to be checked at regular intervals as well as early corrective actions to be taken if necessary. This research applied SE LIs to a SCRUM Agile project to …
Improving System Design Through The Integration Of Human Systems And Systems Engineering Models, Michael E. Watson
Improving System Design Through The Integration Of Human Systems And Systems Engineering Models, Michael E. Watson
Theses and Dissertations
The human is a critical aspect of many systems, but frequently there is a failure to properly account for human capabilities and involvement during system design. This inattention results in systems with higher lifecycle costs, decreased user compatibility, and the potential to produce disastrous consequences. This research presents an approach to integrating the human into system models by using two methods: static and dynamic modeling. The static method uses a user-centered design framework to create system- and human-centered models that deconstruct the system and user into their respective components. These models are integrated to create system models that include relevant …
A Time-Variant Value-Focused Methodology For Supporting Pre-Acquisition, Brian K. Scheller
A Time-Variant Value-Focused Methodology For Supporting Pre-Acquisition, Brian K. Scheller
Theses and Dissertations
Military operations are dynamic in nature, as time-dependent requirements or adversary actions can contribute to differing levels of mission performance among systems. Future military operations commonly use multi-criteria decision analysis techniques that rely on value-focused thinking (VFT) to analyze and ultimately rank alternatives during the Analysis of Alternatives phase of the acquisition process. Traditional VFT approaches are not typically employed with the intention of analyzing time-variant performance of alternatives. In this research, a holistic approach towards integrating fundamental practices such as VFT, systems architecture, and modeling and simulation is used to analyze time-dependent data outputs of an alternative’s performance within …
Measuring The Effectiveness Of Us Military Humanitarian Construction Projects Through Geospatial Analysis Of Public Opinion In Belize, Arthur Z. Dietrich
Measuring The Effectiveness Of Us Military Humanitarian Construction Projects Through Geospatial Analysis Of Public Opinion In Belize, Arthur Z. Dietrich
Theses and Dissertations
As part of broader US foreign policy efforts the Department of Defense (DoD) increasingly conducts complex operations which focus on efforts to influence local populations. These \hearts and minds" operations often include humanitarian and development construction projects. The wider impact on US foreign policy effort from the US military's participation in projects traditionally conducted by civilian agencies is not well understood. This research examined the effects on local public opinion from two US Air Force led \Operation New Horizons" Humanitarian and Civic Assistance (HCA) missions conducted in the nation of Belize in 2013 and 2014. The study specifically looked for …
Analysis Of Inpatient Hospital Staff Mental Workload By Means Of Discrete-Event Simulation, Erich W. Maxheimer
Analysis Of Inpatient Hospital Staff Mental Workload By Means Of Discrete-Event Simulation, Erich W. Maxheimer
Theses and Dissertations
Many process improvement tools have been applied to the healthcare industry to improve safety and efficiency. However, nearly all of these tools have neglected to explicitly quantify mental workload of healthcare providers despite the consensus that it is related to human performance. This research uses the Improved Performance Research Integration Tool (IMPRINT), a discrete-event simulation (DES), to quantify mental workload. Specifically, this research examines staff members in an inpatient unit at the Wright-Patterson Medical Center to detect workload differences between staff, identify trends which lead to high workload demands, evaluate the influence of patient load on mental workload, and test …