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Now showing items 2161-2170 of 3109
Colorings of Zero-Divisor Graphs of Commutative Rings
(North Dakota State University, 2015)
We will focus on Beck’s conjecture that the chromatic number of a zero-divisor graph of a ring R is equal to the clique number of the ring R. We begin by calculating the chromatic number of the zero-divisor graphs for some ...
Resolutions and Semidualizing Modules
(North Dakota State University, 2014)
Projective and injective modules are of key importance in algebra, in part because of their useful homological properties. The notion of C-projective and C-injective modules generalizes these constructions. In particular, ...
Understanding Students’ Perceptions of Difficulty and the Effect Difficulty Has on Mathematical Anxiety
(North Dakota State University, 2018)
There exists a growing atmosphere surrounding mathematics that allows individuals to exclaim their belief they are deficient in math without any societal judgement. Compared to a state like being illiterate, we have reached ...
High-Performance Simulations for Atmospheric Pressure Plasma Reactor
(North Dakota State University, 2012)
Plasma-assisted processing and deposition of materials is an important component of modern industrial applications, with plasma reactors sharing 30% to 40% of manufacturing steps in microelectronics production [1]. Development ...
Development of an Anti-Corrosion Thermally Sprayed Coating System for Oil and Gas Transmission Pipeline
(North Dakota State University, 2018)
Corrosion, a leading cause of failure in metallic transmission pipelines, significantly impacts the reliability and safety of metallic pipelines. To prevent and mitigate pipeline corrosion, various non-metallic coatings ...
Nonlinear Fatigue Damage Accumulation in Aircraft Engine Alloys Multiaxial Loading
(North Dakota State University, 2013)
Fatigue is considered to be one of the most frequent phenomena in the failure of many
machine parts. Most of the prior studies on fatigue have been limited to uniaxial loading cases
with a primary focus on constant ...
Characterizing the Operation of a Dual-Fuel Diesel-Hydrogen Engine near the Knock Limit
(North Dakota State University, 2014)
A CAT C6.6 turbocharged diesel engine was operated in dual-fuel diesel-hydrogen mode. Hydrogen was inducted into the intake and replaced a portion of the diesel fuel. Hydrogen was added across multiple engine speeds and ...
Brain Tissue Mechanical Characterization and Determination of Brain Response under Confined Blasts Explosions
(North Dakota State University, 2015)
Mechanical experimental tests including stress relaxation, simple monotonic ramps, and impact loads were performed on porcine brain tissues to investigate the response of the brain under different loading scenarios. Linear ...
Theoretical and Experimental Studies of Droplets Wetting on Micronano-Fibrous Materials and their Applications in Oil-Water Separation
(North Dakota State University, 2013)
This research was aimed at the theoretical and experimental investigation of wetting behavior of immiscible droplets sitting on filaments and related applications in oil-water separation. This work consisted of three ...
Computational Investigation of Low-Pressure Turbine Aerodynamics
(North Dakota State University, 2015)
The design of today’s gas turbine engines is heavily reliant on accurate computational fluid flow models. Creating prototype designs is far more expensive than modeling the design on a computer; however, current turbulence ...