Index Catalog // ScholarsArchive@OSU

Synthesis, degradation and practical applications of a glycerol/citric acid condensation polymer

Creator:: Trenkel-Amoroso, Jan
Abstract:: This study looks at the properties of glycerol/citric acid as they are affected by the length and temperature of the bake used to facilitate the condensation reaction that creates the polymer. In particular, the length of time required for the polymer to break down in the presence of water, both...
Resource Type:: Masters Thesis
Full Text:: /Citric Acid Condensation Polymer Abstract approved: Willie E. Rochefort This study looks

Secrecy of massive MIMO systems under antenna failure

Creator:: Assiri, Mohammad
Abstract:: As the fifth generation of mobile communication systems (5G) is being deployed, massive multiple-input multiple-output (MIMO) serves as one of its enabling technologies where reliable and ultra low latency communications are achieved while being power and spectrum efficient. This thesis studies the security aspect of massive MIMO system from the...
Resource Type:: Dissertation
Full Text:: . Title: Secrecy of Massive MIMO Systems Under Antenna Failure Abstract approved: Mario E. Magaña Bella

Examining Wave Attenuation Rates and Subsurface Pore Pressures Across Three Marsh Restoration Sill Structures on a Sandy Bed

Creator:: Converse, Jordan D.
Abstract:: With rising sea levels and more frequent exposure to extreme storms, coastlines worldwide are vulnerable to increased erosion and loss of natural marsh lands. In an effort to lessen these impacts, there is a growing practice of adapting hard or “gray” coastline protection techniques to more nature-based features that promote...
Resource Type:: Masters Thesis
Full Text:: : ______________________________________________________ Meagan. E. Wengrove With rising sea levels and more frequent exposure to extreme storms

Large-strain softening of aluminum in shear at elevated temperature

Creator:: Alhajeri, Saleh N.
Abstract:: Pure aluminum deformed in torsion (shear) at elevated temperatures reaches a broad "peak" stress and then undergoes about a 17% decrease in flow stress with deformation to roughly 1-2 equivalent uniaxial strain. Beyond this strain the flow stress is approximately constant. The sources for this softening are unclear. The suggested...
Resource Type:: Masters Thesis
Full Text:: Softening of Aluminum in Shear at Elevated Temperature. Abstract approved: Michael E. Kassner Pure

Multiple Nonlinear Model Predictive Control for a Six-body System Oscillating Water Column Wave Energy Converters Array

Creator:: Xu, Zhicheng
Abstract:: This research presents the design of three nonlinear model predictive controllers (NMPCs) for floating oscillating water column (OWC) wave energy converters (WECs) array to maximize generated power, augmented with the control of the high-speed stop valves (HSSVs). Key to this design is the development of a high-fidelity discretized model for...
Resource Type:: Masters Thesis
Full Text:: Jinsub Kim, and graduate council representative, Prof. William H. Warnes. I truly appreciate the

Sealed consolidation of natural fiber composites with chemical reactant injection and removal

Creator:: Chowdhury, Mohammed Jahangir Alam
Resource Type:: Dissertation
Full Text:: express my sincere gratitude and appreciation to Dr. Philip E. Humphrey, my advisor. Without his guidance

The Partitioning Technique of Power System to Improve the Observability of Sub-System for Multi-area State Estimation

Creator:: Lyu, Tao
Abstract:: An accurate state estimation plays an essential role in power system operation and planning in energy management systems. However, existing multi-area state estimation researches have not focused on the importance of system clustering. The clustering mechanism divides or partitions a system according to user-defined criteria. Few published research works have...
Resource Type:: Dissertation
Full Text:: vertex set V (G), an edge set E(G), and a relation that associates with each edge two vertices called

Development and characterization of novel hydrogels for nucleus pulposus replacement

Creator:: Bader, Rebecca A.
Abstract:: Hydrogels have been proposed as candidates for nucleus pulposus replacement due to their similarity in mechanical behavior to the native tissue when subjected to transient or static loading; however, given the viscoelastic nature of soft biological tissues, the lack of dynamic testing is a significant inadequacy in the studies performed...
Resource Type:: Dissertation
Full Text:: : _______________________________________________________ Willie E. Rochefort

Mechanical Behavior of Elastomer Polymer under Shear and Compression: Experimental Investigation Using Digital Image Correlation

Creator:: Raheem, Hassan M.
Abstract:: Due to their viscoelastic properties, polymers and hydrogels are widely used in many applications. In this study, the viscoelastic properties of elastomer polymers were investigated for a series of hydrogel, hydrogel composites and silicon materials. A primary application for hydrogels and hydrogel composites is as a replacement for the degenerated...
Resource Type:: Dissertation
Full Text:: : ______________________________________________________ Brian K. Bay Skip E. Rochefort Due to their viscoelastic

An investigation of transition from penetration to deflection in the fracture of bi-material interfaces

Creator:: Strom, Joshua L.
Abstract:: The problem of determining whether a crack impinging on an interface will penetrate into the substrate or deflect along the interface is vital to the effective design of layered and composite material systems. Of particular interest is the transition between crack propagation by penetration through an interface and deflection along...
Resource Type:: Masters Thesis
Full Text:: . 0.0 0.5 1.0 1.5 2.0 2.5 1 10 100 N o rm al iz e d F ra ct u re L o ad

ScholarsArchive@OSU

Synthesis, degradation and practical applications of a glycerol/citric acid condensation polymer

Secrecy of massive MIMO systems under antenna failure

Examining Wave Attenuation Rates and Subsurface Pore Pressures Across Three Marsh Restoration Sill Structures on a Sandy Bed

Large-strain softening of aluminum in shear at elevated temperature

Multiple Nonlinear Model Predictive Control for a Six-body System Oscillating Water Column Wave Energy Converters Array

Sealed consolidation of natural fiber composites with chemical reactant injection and removal

The Partitioning Technique of Power System to Improve the Observability of Sub-System for Multi-area State Estimation

Development and characterization of novel hydrogels for nucleus pulposus replacement

Mechanical Behavior of Elastomer Polymer under Shear and Compression: Experimental Investigation Using Digital Image Correlation

An investigation of transition from penetration to deflection in the fracture of bi-material interfaces

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