Browsing Mechanical engineering by Title
Now showing items 306-325 of 431
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Obtaining Material Properties of the Plantar Soft Tissue for a Patient-Specific Finite Element Model of the Foot
(2012-08-10)<italic>Background</italic>: People with diabetes account for just over 8% of the US population, but they undergo approximately 63% of all non-traumatic lower limb amputations, or 65,700 amputations per year. ... -
On the Development of a Robotic Biarticular Prosthesis Emulator
People with transtibial limb loss experience decreased walking ability and have long-term musculoskeletal issues, such as knee osteoarthritis. Currently available ankle-foot prostheses, which only actuate the ankle joint, ... -
On the simulation and modeling of turbulent reacting flows
(1996)A computational algorithm is described for Direct Numerical Simulation (DNS) of a reactive plume in spatially-evolving, grid turbulence. The chemistry follows the single-step, irreversible, global reaction: $Fuel+(r)Oxid ... -
On the structural and acoustic design of guitar soundboards
(1990)An assumed mode model of a guitar soundboard has been built and experimentally verified. The frequency range of interest was from 55 to 880 Hertz, covering the frequency range of the fundamentals of the notes played on the ... -
Online Decision Making: DR-Submodular Objectives and Stochastic Linear Constraints
In this thesis, we consider online continuous DR-submodular maximization with linear stochastic long-term constraints. Compared to the prior work on online submodular maximization \cite{chenOnlineContinuousSubmodular2018}, ... -
Online Self-Calibrating Precision Scanning Fiber Technology with Piezoelectric Self-Sensing
The scanning fiber technology was invented at the University of Washington more than a decade ago as a novel imaging modality within an extremely compact form factor. Since then, the mechanical design has improved from ... -
Opportunities for Ice Storage to Provide Ancillary Services to Power Grids Incorporating Wind Turbine Generation
(2013-11-14)Power generation using wind turbines increases the electrical system balancing, regulation and ramp rate requirements due to the minute to minute variability in wind speed and the difficulty in accurately forecasting wind ... -
Optical and Magnetic Approaches to Microfluidic Blood Diagnostics
Critical bleeding manifests in cardiovascular disease and trauma. As a patient bleeds, there is a loss of red blood cells, responsible for the delivery of oxygen throughout the body, and this loss is known as anemia. In ... -
Optimization Study of Polyethyleneimine Surface Coating for Microtip DNA Purification
(2014-02-24)DNA purification is a process to separate and extract DNA from various samples. As such, it is an initial step in molecular diagnostics, forensics, pharmacogenomics, and many other genetic analysis based disciplines. Current ... -
Optimization, Modeling, and Control of Cross-Flow Turbine Arrays
The ability to understand unsteady fluid flows is foundational to advancing technologies in energy, health, transportation, and defense. This work uses data-driven methods (i.e., machine learning) to interpret and control ... -
Optimizing Optical-sectioning Microscopy Techniques for Diverse Biomedical Applications
Optical-sectioning microscopes are powerful tools that can be used by biomedical scientists and clinicians to visualize and monitor subcellular features in thick tissues at relatively large depths (up to hundreds of microns). ... -
Our non-feathered friends: sensing and control in insect-scale flight
Insects are capable of many tasks that insect-scale flying robots cannot yet perform, such as dodging waving grasses or branches, catching other insects as aerial predators, and taking off from and landing on a wide variety ... -
Output-Boundary Regulation Using Event-Based Feedforward for Nonminimum-Phase Systems
This research addresses a disturbance-rejection problem for nonminimum-phase systems. Exact disturbance cancellation can be obtained by using inversion-based feedforward, but preview information of disturbances is required ... -
Paper-based Nucleic Acid Amplification Testing at the Point-of-Care for HIV Viral Load Monitoring
Major advancements have been made in the past forty years to combat the HIV pandemic. Viral load testing, a type of nucleic acid amplification test (NAAT), is a crucial tool in early detection, monitoring antiretroviral ... -
Pattern-less Electromagnetic Wave Manipulation by Active Control of Tunable Metamaterials
(2012-09-13)Terahertz technologies have been attracting attention over the past few years due to their unique applications in bio-chemical sensing, bio-imaging, spectroscopy, security, and communications. Traditionally, these applications ... -
Performance Evaluation, Emulation, and Control of Cross-Flow Hydrokinetic Turbines
Cross-flow hydrokinetic turbines are a promising option for effectively harvesting energy from fast-flowing streams or currents. This work describes the dynamics of such turbines, analyzes techniques used to scale turbine ... -
Permanent growth characteristics of alloy cast iron when exposed to a temperature gradient.
(1932)The object of this investigation was to determine the growth characteristics of cast iron with varying alloy additions, when exposed to a temperature gradient and to repeated heating. That is, it was to measure the change ... -
Phase Transformations in Free Films
(2013-02-25)The purpose of this dissertation is to present the derivation of the governing equations for a free-film undergoing phase separation using a long-wavelength approximation to the Navier-Stokes equations coupled with the ... -
Planar Aerial Reorientation of an Insect Scale Robot Using Piezo-Actuated Tail Like Appendage
Robots today, though capable of performing a growing number of increasingly complex tasks, lack the agility that would be required to perform in a rapidly changing or dynamic environment, especially when compared to animals ... -
Plantar Soft Tissue Multiscale Structure and Mechanics with Emphasis on Diabetes-related Changes
Diabetes mellitus is a significant chronic disease affecting over 37 million Americans. Complications of the lower extremity related to diabetes can be severe, including deformity, ulceration, and amputation. Developing ...