Systems Engineering Commons^™

Like You Search, Gipson Bachman

LMU Theses and Dissertations

As consumers continue to make their purchases solely online without visiting brick-and-mortar stores, they increasingly look for ways to “touch, feel and try on” products without actually doing so. We believe social media influencers provide a way to do this, with the influencers themselves acting as “stand-ins” for consumers in their place. Finding influencers that look like you in 2022 sounds like it would be easy, but it isn’t. Until now.

LIKE YOU aims to answer this gap in the market by creating a proprietary search engine that, through answering a few questions, recommends a list of influencers that can …

Modular And Deployable Solution For Passing Hazardous Roads, Nicholas Short

LMU Theses and Dissertations

The developing world often relies on low-water crossings on unpaved roads in place of bridges for vehicle river crossings and impoverished communities suffer disproportionately more from road shut-downs. This project defines a modular and deployable bridge solution to combat low-water crossing hazards in undeveloped road systems in year-round conditions using Systems Engineering and related methodologies to architect the solution.

Comparison Of Lean Healthcare Systems Engineering Process (Lhse) For Healthcare Improvement Projects With Earlier Improvement Initiatives, Bohdan W. Oppenheim, Michael H. Kanter, Aleksander Buczacki

Systems Engineering Faculty Works

A new process called Lean Healthcare Systems Engineering (LHSE) recently invented for improving healthcare workflows and designing new care is reviewed and compared to previous quality initiatives: PDSA, TQM, Six Sigma, Lean, Theory of Constraints, and several others. LHSE is applicable to workflow improvement or new care design projects in clinical environments, including hospitals, operating suites, emergency departments, clinics, imaging and clinical laboratories, pharmacies, population health, and telemedicine. LHSE integrates the strengths of Lean Six Sigma and Systems Engineering (SE). Lean’s overarching philosophy of “do what is necessary to deliver the value and reject everything else as waste” governed the …

Automating School Fees Transactions In Nigerian Universities And Tertiary Institutions: A Systems Engineering And System Management Approach, Clement Aladi

LMU Theses and Dissertations

This project uses system engineering and system management principles to analyze the problem of transactions in Nigerian universities and tertiary institutions. System management principles shall be used to highlight the imperfections in the transaction method currently in use especially the disconnect between the bank and the institutions using their services. It will explore other payment systems available in the country. This project will provide a recommendation of how to implement a better payment option through automating the process of school payments by using a system with a cloud-based educational software at the school bursary office and through the online payment …

System Engineering Analysis Of Terraforming Mars With An Emphasis On Resource Importation Technology, Brandon Wong

LMU Theses and Dissertations

This project uses System Engineering principles to delve into the viability of different methods for Terraforming Mars, with a comparison between Paraterraforming, Terraforming and Bioforming. It will then examine one subsystem that will be integral to the terraforming process, which is the space infrastructure necessary to import enough gases to recreate Earth’s atmosphere on Mars. It will analyze the viability of Chemical Rockets, Nuclear Rockets, Space Elevators, Skyhooks, Rotovators, Mass Drivers, Launch Loops and Orbital Rings for this subsystem and provide recommendations for an implementation plan.

Satellite Constellation Architecture And Design To Take Advantage Of On-Orbit Servicing And Repair, Douglas Sciortino

LMU Theses and Dissertations

Access to space is becoming less expensive, which is allowing smaller companies with big ideas, such as on-orbit servicing and repair, to enter into the space industry. On-orbit servicing and repair provides capabilities, such as towing, refueling, inspections, and physical repair, to add additional life to on-orbit satellites by resolving life-limiting issues. On-orbit servicing and repair is technically possible, but there is still one major issue that continues to stifle the on-orbit servicing and repair market -- “satellites are not built with servicing in mind” (Parker, 2015).

The on-orbit servicing and repair industry is stagnate due to a challenging conundrum. …

Systems Engineering Analysis For Optimum Selection Protocol For Thermal Expansion Measurement Of A Carbon Fiber Reinforced Composite Tube, Ronald Uchimiya

LMU Theses and Dissertations

A material’s Coefficient of Thermal Expansion (CTE) is a valuable physical property, particularly for structural fiber reinforced composites that are routinely used in satellite/aerospace applications. Satellite space structures are routinely designed with a high degree of dimensional and thermal stability. Designing and verifying for near zero CTE performance is a common design requirement. The CTE is routinely a physical property with known values for common materials. However, the strength, stiffness and CTE properties on a multi-ply graphite fiber reinforced laminate composite can be tailored to specific engineering requirements. Because of this, a method of verification (testing) is routinely performed to …

Program Requirements: Complexity, Myths, Radical Change, And Lean Enablers, Bohdan W. Oppenheim

Systems Engineering Faculty Works

This paper presents a comprehensive discussion on the difficulties of formulating good and stable requirements early in complex engineering programs and the consequences on program execution. Formal classical systems engineering and program management (CSEPM) methodology is based on the assumption that the knowledge to anticipate all interfaces and create good requirements exists early in the program, and that it is a matter of working out the details to build extremely complex devices such as satellites, aircraft, refineries, nuclear power plants, and high-speed rail. The author argues that classical systems engineering and program management works well only for well-understood systems, but …

Environmental Security Through Packaging Sustainability, Mark Betancourt

Systems Engineering Research Projects and Oral Presentations

No abstract provided.

Lean Product Development Flow, Bohdan W. Oppenheim

Systems Engineering Faculty Works

A general holistic framework, also called a process—named “Lean Product Development Flow (LPDF)”—for organizing the engineering work of Product Development (PD), has been proposed as a contribution to the emerging field of Lean Systems Engineering. The framework is based on Lean Principles, with emphasis on PD value-pulling workflow pulsed by takt periods. The value is defined as (1) mission assurance/product quality, (the traditional goals of Systems Engineering) and (2) reduced program cost and schedule achieved by a radical reduction of waste. LPDF is recommended for smaller design programs based on a high degree of legacy knowledge, with technologies mature enough …

Polynomial Approximations To Mooring Forces In Equations Of Low-Frequency Vessel Motions, Bohdan W. Oppenheim, P. A. Wilson

Systems Engineering Faculty Works

Multivariate polynomial approximations are considered to the coupled nonlinear mooring forces acting on a vessel moored with multileg moorings. The objective is to yield explicit forms of equations of the low-frequency vessel motions, since the exact mooring forces are known numerically only. Such forms could then be used for analytical solutions of the equations of motion. It is shown that the polynomials lack sufficient generality and accuracy for this purpose, and hence solution of the problem can be considered only by the exact method.

Static 2-D Solution Of A Mooring Line Of Arbitrary Composition In The Vertical And Horizontal Operating Modes, Bohdan W. Oppenheim

Systems Engineering Faculty Works

A theoretical static solution is reported for a two-dimensional mooring line having an arbitrary multi-segment composition of wires, chains, synthetic ropes and buoys. The segments can be buoyant, neutrally buoyant or heavier than water, and they can be nonlinearly stretchable. The buoys can be of constant positive and negative buoyancy, thus representing submerged buoys and hung weights. A mooring line can operate in the 'horizontal' or slack mode, and in the 'vertical' or 'tension-moor' mode. In the former cese, a surface-floating 'spring-buoy' is allowed, as well as a linear slope of the sea bottom at the anchor.

Low-Frequency Dynamics Of Moored Vessels, Bohdan W. Oppenheim, P. A. Wilson

Systems Engineering Faculty Works

Three complete theories of the low-frequency dynamics of ships and disks moored with multileg mooring systems in deep water are derived, evaluated, and computerized. One theory is nonlinear; it includes the effects of cubic damping, nonlinear mooring forces and the excitation-yaw motion feedback, and it is handled by simulation. It yields random, regular and transient records, probabilities and statistics, exact and linearized transfer functions, and spectra of responses. The second theory is linear, solved in the frequency domain. The third is a static theory, which is a by-product of the linear one. Mooring lines of arbitrary compositions are considered.

The Biology Instrument For The Viking Mars Mission, Frederick S. Brown, H.E. Adelson, M.C. Chapman, O.W. Clausen, A.J. Cole, J.T. Cragin, R.J. Day, C.H. Debenham, R.E. Fortney, R.I. Gilje, D.W. Harvey, J.L. Kropp, S.J. Loer, J.L. Logan, Jr., W.D. Potter, G.T. Rosniak

Systems Engineering Faculty Works

Two Viking spacecraft have successfully soft landed on the surface of Mars. Each carries, along with other scientific instruments, one biology laboratory with three different experiments designed to search for evidence of living microorganisms in material sampled from the Martian surface. This 15.5-kg biology instrument which occupies a volume of almost 28.3 dm3 is the first to carry out an in situ search for extraterrestrial life on a planet. The three experiments are called the pyrolytic release, labeled release, and gas exchange. The pyrolytic release experiment has the capability to measure the fixation of carbon dioxide or carbon monoxide into …