Barrett, The Honors College Thesis/Creative Project Collection
Barrett, The Honors College at Arizona State University proudly showcases the work of undergraduate honors students by sharing this collection exclusively with the ASU community.
Barrett accepts high performing, academically engaged undergraduate students and works with them in collaboration with all of the other academic units at Arizona State University. All Barrett students complete a thesis or creative project which is an opportunity to explore an intellectual interest and produce an original piece of scholarly research. The thesis or creative project is supervised and defended in front of a faculty committee. Students are able to engage with professors who are nationally recognized in their fields and committed to working with honors students. Completing a Barrett thesis or creative project is an opportunity for undergraduate honors students to contribute to the ASU academic community in a meaningful way.
Displaying 1 - 10 of 67
Description
An in-depth analysis on the effects vortex generators cause to the boundary layer separation that occurs when an internal flow passes through a diffuser is presented. By understanding the effects vortex generators demonstrate on the boundary layer, they can be utilized to improve the performance and efficiencies of diffusers and other internal flow applications. An experiment was constructed to acquire physical data that could assess the change in performance of the diffusers once vortex generators were applied. The experiment consisted of pushing air through rectangular diffusers with half angles of 10, 20, and 30 degrees. A velocity distribution model was created for each diffuser without the application of vortex generators before modeling the velocity distribution with the application of vortex generators. This allowed the two results to be directly compared to one another and the improvements to be quantified. This was completed by using the velocity distribution model to find the partial mass flow rate through the outer portion of the diffuser's cross-sectional area. The analysis concluded that the vortex generators noticeably increased the performance of the diffusers. This was best seen in the performance of the 30-degree diffuser. Initially the diffuser experienced airflow velocities near zero towards the edges. This led to 0.18% of the mass flow rate occurring in the outer one-fourth portion of the cross-sectional area. With the application of vortex generators, this percentage increased to 5.7%. The 20-degree diffuser improved from 2.5% to 7.9% of the total mass flow rate in the outer portion and the 10-degree diffuser improved from 11.9% to 19.2%. These results demonstrate an increase in performance by the addition of vortex generators while allowing the possibility for further investigation on improvement through the design and configuration of these vortex generators.
ContributorsSanchez, Zachary Daniel (Author) / Takahashi, Timothy (Thesis director) / Herrmann, Marcus (Committee member) / Mechanical and Aerospace Engineering Program (Contributor) / W.P. Carey School of Business (Contributor) / Barrett, The Honors College (Contributor)
Created2018-05
Description
This experiment used hotwire anemometry to examine the von Kármán vortex street and how different surface conditions affect the wake profile of circular airfoils, or bluff bodies. Specifically, this experiment investigated how the various surface conditions affected the shedding frequency and Strouhal Number of the vortex street as Reynolds Number is increased. The cylinders tested varied diameter, surface finish, and wire wrapping. Larger diameters corresponded with lower shedding frequencies, rougher surfaces decreased Strouhal Number, and the addition of thick wires to the surface of the cylinder completely disrupted the vortex shedding to the point where there was almost no dominant shedding frequency. For the smallest diameter cylinder tested, secondary dominant frequencies were observed, suggesting harmonics.
ContributorsCoote, Peter John (Author) / Takahashi, Timothy (Thesis director) / White, Daniel (Committee member) / Mechanical and Aerospace Engineering Program (Contributor) / Barrett, The Honors College (Contributor)
Created2017-05
Description
The purpose of this paper is to discover what geometric characteristics of a wing and airfoil help to maximize leading edge suction through experimental testing. Three different stages of testing were conducted: a Proof of Concept, a Primary Experiment, and a Secondary Experiment. The Proof of Concept shows the effects of leading edge suction and the benefits it can posses. The Primary Experiment provided inconclusive data due to inaccuracies in the equipment. As a result, the Secondary Experiment was conducted in order to reduce the error effect as much as possible on the data. Unfortunately the Secondary Experiment provided inaccurate data as well. However, this paper does provide enough evidence to begin to question some of the long held beliefs regarding theoretical induced drag and whether it is true under all circumstances, or if it is only a good approximation for airfoils with full leading-edge suction effects.
ContributorsMorrow, Martin (Author) / Takahashi, Timothy (Thesis director) / Middleton, James (Committee member) / School for the Engineering of Matter, Transport, and Energy (Contributor) / Barrett, The Honors College (Contributor)
Created2017-05
Description
This thesis, entitled "A Community Perspective on Alcohol Education," was conducted over a ten month period during the Spring 2014 and Fall 2014 semesters, composed by Christopher Stuller and Nicholas Schmitzer. The research involved interviewing twelve professionals from Arizona State University and the City of Tempe to gather a holistic view on alcohol education and alcohol safety as it involves the students at ASU. Upon completion of the interviews, recommendations were made regarding areas of improvement for alcohol education and alcohol safety at Arizona State University. These recommendations range from creating a mandatory alcohol education class to passing a Guardian Angel Law to creating a national network of alcohol education best practices. Through this thesis, the authors hope to prevent future alcohol related injuries, deaths, and tragedies. For the final display of this thesis a website was created. For the ease of reading, all information has been presented in text format.
ContributorsSchmitzer, Nicholas (Co-author) / Stuller, Christopher (Co-author) / Koretz, Lora (Thesis director) / Scott Lynch, Jacquelyn (Committee member) / Barrett, The Honors College (Contributor) / Department of Information Systems (Contributor) / School of Accountancy (Contributor) / Department of Supply Chain Management (Contributor)
Created2014-12
Description
Modern Americans ignorantly live under a blanket of unread terms, conditions, and binding contracts. Often, these contracts (mostly associated with products and services) come and go with little effect. Periodically, the products or services cause the consumer harm, leading them to seek repair. The consumer then realizes that all the fine print they failed to read makes an impactful legal difference. This paper analyzes the work of Professor Radin through her book, Boilerplate. It goes on to explore many other arguments presented by contract theorists and makes substantial claims regarding the dangers of boilerplate (unread terms and conditions).
ContributorsBecker, Alexander Daniel (Author) / Koretz, Lora (Thesis director) / Calleros, Charles (Committee member) / Barrett, The Honors College (Contributor) / W. P. Carey School of Business (Contributor) / Department of English (Contributor)
Created2015-05
Description
A model has been developed to modify Euler-Bernoulli beam theory for wooden beams, using visible properties of wood knot-defects. Treating knots in a beam as a system of two ellipses that change the local bending stiffness has been shown to improve the fit of a theoretical beam displacement function to edge-line deflection data extracted from digital imagery of experimentally loaded beams. In addition, an Ellipse Logistic Model (ELM) has been proposed, using L1-regularized logistic regression, to predict the impact of a knot on the displacement of a beam. By classifying a knot as severely positive or negative, vs. mildly positive or negative, ELM can classify knots that lead to large changes to beam deflection, while not over-emphasizing knots that may not be a problem. Using ELM with a regression-fit Young's Modulus on three-point bending of Douglass Fir, it is possible estimate the effects a knot will have on the shape of the resulting displacement curve.
ContributorsSexton, Thurston Bryant (Author) / Takahashi, Timothy (Thesis director) / Jones, Donald (Committee member) / Barrett, The Honors College (Contributor) / Mechanical and Aerospace Engineering Program (Contributor) / School of Mathematical and Statistical Sciences (Contributor) / School of Human Evolution and Social Change (Contributor)
Created2015-05
Description
This thesis explores three predominant theories of language in cultures, considering them with the use of multilingual automated phone systems. It presents an analysis of Internet based (primarily through blogposts) reviews of such systems. As these reviews are insufficient to form a conclusion as to how the public sees such systems, this thesis also presents an original study of 90 participants, which assesses both the functional difference between English only and multilingual systems, as well as respondents' personal ethical (as defined by participants themselves) beliefs as to the necessity of such multilingual automated systems. The study's primary hypotheses assert that these systems will not have any large functional difference, and that the majority of respondents will find the use of such multilingual automated systems ethically necessary. Both of these hypotheses are found to be correct.
ContributorsRupp, Garrett Adam (Contributor) / Koretz, Lora (Thesis director) / Kalika, Dale (Committee member) / Barrett, The Honors College (Contributor)
Created2015-05
Description
Trekster is an online outdoor website that provides the tools and information necessary for any person to complete a given outdoor activity that matches his/her ability, age, location, and desires with a focus on United States National Parks and National Monument travel. Over time, Trekster will create a sizable repository of trails and activities that reflect a geographically diverse nation and the equally diverse interests the population of the world seek to enjoy in these awe-inspiring locales. Trekster will focus on content creation and the updating of existing content to continually offer the most precise and voluminous information on a given trail, activity, or news item. Trekster is a Limited Liability Company with roots in Arizona and Colorado. Trekster will be managed by Kurtis Zinger, an outdoorsman and businessman keen on finding solutions to problems he has experienced in his travel planning within the national parks. The idea for Trekster originated with a lack of helpful content available from the National Park Service websites for travel to the United States National Parks and National Monuments. Visitation at parks has continued to increase most years over the past three decades, yet the National Parks Service has not been able to successfully serve the demand of an eager outdoor demographic. Trekster is designed for ease-of-use and its target market ranges from senior citizens and foreign visitors to American citizens that are avid backpackers, hikers, and/or campers. Trekster will provide these markets with the tools needed to improve their outdoor or National Park experience, especially because of the lack of these resources at other websites for a reasonable price. As revenue will be Trekster's primary revenue stream, but by keeping expenses limited to marketing efforts after the first year of operation, Trekster will reach its break-even point by 2017 and will make positive profits that grow exponentially during the years that follow. After 2020, Trekster will have content for all 50 states and will begin exploring unique ways to deliver content and explore other potential revenue sources. Trekster will be the premier online destination for travelers to National Parks and adventurers hoping to find more than a superficial introduction to a complex maze of information. By providing quality content free of charge, Trekster will become a favorite resource of outdoor enthusiasts and a source of community for those who find solace and adventure in the outdoors.
ContributorsZinger, Kurtis (Author) / Koretz, Lora (Thesis director) / Facinelli, Diane (Committee member) / Ehrlich, Susan (Committee member) / Barrett, The Honors College (Contributor)
Created2015-05
Description
The thesis is an investigation on current regulations of commercial aircraft landing and take-off procedures and an analysis of potential weaknesses within the regulatory system for commercial aerospace. To determine such flaws, an area of worse-case scenarios with regard to the aforementioned flight operations was researched. The events selected to best-depict these scenarios where incidents of aircraft overrunning the runway, referred to as runway excursions. A case-study conducted of 44 federal investigations of runway excursions produced data indicating four influential factors within these incidents: weather, pilot error, instrument malfunction, and runway condition. Upon examination, all but pilot error appeared to have federal enforcement to diminish the occurrence of future incidents. This is a direct result of the broad possibilities that make up this factor. The study then searched for a consistent fault within the incidents with the results indicating an indirect relationship of thrust reversers, a technique utilized by pilots to provide additional braking, to these excursions. In cases of thrust reverser failure, pilots' over-reliance on the system lead to time being lost from the confusion produced by the malfunction, ultimately resulting in several different runway excursions. The legal implication with the situation is that current regulations are ambiguous on the subject of thrust reversers and thus do not properly model the usage of the technique. Thus, to observe the scope of danger this ambiguity presents to the industry, the relationship of the technique to commercial aerospace needed to be determined. Interviews were set-up with former commercial pilots to gather data related to the flight crew perspective. This data indicated that thrust reversers were actively utilized by pilots within the industry for landing operations. The problem with the current regulations was revealed that the lack of details on thrust reverser reflected a failure of regulations to model current industry flight operations. To improve safety within the industry, new data related to thrust reverser deployment must be developed and enforced to determine appropriate windows to utilize the technique, thus decreasing time lost in confusion that results from thrust reversers malfunction. Future work would be based on producing simulations to determine said data as well as proposing the policy suggestions produced by this thesis.
ContributorsCreighton, Andrew John (Author) / Takahashi, Timothy (Thesis director) / Marchant, Gary (Committee member) / Kimberly, Jimmy (Committee member) / Barrett, The Honors College (Contributor) / Mechanical and Aerospace Engineering Program (Contributor) / School of Mathematical and Statistical Sciences (Contributor) / School of Politics and Global Studies (Contributor)
Created2014-05
Description
The following paper examines the current international code of ethics and customs accompanying global supply chain management. It specifically addresses the legal aspects that contemporary supply chains must consider when conducting business internationally as well as the customary traditions associated with major regions of current trade. In particular, it describes the simultaneously growing and tepid interest in conducting business with the B.R.I.C. (Brazil, Russia, India, and China) countries to supplement the aforementioned topic with a contemporary issue. In particular, it details the amount, if any, of corruption occurring in each country and describes the influence that these practices have and the complications they create on international trade with the United States.
ContributorsChakkera, Shawn Vinay (Author) / Koretz, Lora (Thesis director) / Carter, Craig (Committee member) / Barrett, The Honors College (Contributor) / Department of Supply Chain Management (Contributor)
Created2014-05