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Articles 31 - 60 of 549
Full-Text Articles in Entire DC Network
Development Of A Marine Biodegradable Target Balloon, Blake Samuel Robinson, Arash Sam Akhavi, David Leonardo Albarran-Martinez
Development Of A Marine Biodegradable Target Balloon, Blake Samuel Robinson, Arash Sam Akhavi, David Leonardo Albarran-Martinez
Materials Engineering
The US Navy utilizes PVC target balloons, known as Killer Tomatoes, that are inflated onboard a naval vessel then deployed into the ocean to calibrate a variety of weaponry. The Navy has requested the investigation of biodegradable polymers to replace the PVC in attempts to reduce ocean waste that is generated from the leftover PVC material. After communicating with American Pacific Plastic Fabricators (APPF), the current manufacturer of the Killer Tomatoes, we gained an understanding of the manufacturing process and the material requirements that would allow a new material to be integrated into their current process. Two proprietary, trial polymers …
Saver (Surface Autonomous Vehicle For Emergency Rescue), Adam Swarhout, Holly Johnson, Zach Rannalli
Saver (Surface Autonomous Vehicle For Emergency Rescue), Adam Swarhout, Holly Johnson, Zach Rannalli
Mechanical Engineering
This document serves to introduce the design team and their competition challenge, as well as to detail the progress of the project. The design challenge was presented by NASA Micro-g NExT’s SAVER (Surface Autonomous Vehicle for Emergency Rescue) competition; the goal was to design a self-driving water vehicle capable of delivering supplies to Orion astronauts separated from the rest of their crew in the case of a maritime emergency. However, the team was not selected to go forward in this competition and thus decided to scale down the size of the SAVER vehicle in order to shift the focus of …
The Ill-Treatment Of Their Countrywoman: Liberated African Women, Violence, And Power In Tortola, 1807–1834, Arianna Browne
The Ill-Treatment Of Their Countrywoman: Liberated African Women, Violence, And Power In Tortola, 1807–1834, Arianna Browne
Master's Theses
In 1807, Parliament passed an Act to abolish the slave trade, leading to the Royal Navy’s campaign of policing international waters and seizing ships suspected of illegal trading. As the Royal Navy captured slave ships as prizes of war and condemned enslaved Africans to Vice-Admiralty courts, formerly enslaved Africans became “captured negroes” or “liberated Africans,” making the subjects in the British colonies. This work, which takes a microhistorical approach to investigate the everyday experiences of liberated Africans in Tortola during the early nineteenth century, focuses on the violent conditions of liberated African women, demonstrating that abolition consisted of violent contradictions …
The Holocaust And Human Experimentation: The Nazi Approach To Medicine, Samantha Miller
The Holocaust And Human Experimentation: The Nazi Approach To Medicine, Samantha Miller
History
The beginning months of 1945 marked the commencement of the swift downfall of the Nazi regime and the end of the tyrannical, oppressive ruling power it held over most of Europe for close to a decade. As Allied Forces invaded Nazi Germany and the remaining Nazi-occupied territories, they undoubtedly expected to encounter the incredible devastation that World War II had left upon most of the Western European continent, from toppled cities, to separated families, to the rising death toll. However, Allied soldiers would soon have to come face to face with another side-effect of the war, something unforeseen and unimaginable, …
High Efficiency Rf Amplifier Design, Evan W. Johnson
High Efficiency Rf Amplifier Design, Evan W. Johnson
Electrical Engineering
High efficiency RF power amplifiers are key to the operation of modern wireless systems. From reducing power consumption at base stations to increasing battery life in handsets, high efficiency amplifiers help system designers to meet key performance criteria for their customers. The advent of the Internet of Things and 5G will lead to mass proliferation of battery operated wireless devices, increasing demand for high efficiency systems. In this project, a high efficiency 4W narrowband PA operating at 1GHz is designed, built and tested for the IMS2020 high efficiency power amplifier (HEPA) design competition. Emphasis is placed on achieving maximum power-added …
Thermal Energy Storage For Load Shifting, Jordan Benton Lopez Corley, Weston Cruz Montgomery, Taylor Glenn Harms
Thermal Energy Storage For Load Shifting, Jordan Benton Lopez Corley, Weston Cruz Montgomery, Taylor Glenn Harms
Mechanical Engineering
The following document accounts for the progress made in the prototype development of our design solution since the Critical Design Review, and our group’s response to recent world events which greatly impacted planned activities. Our design challenge is to develop a thermal energy storage system which will sequester the energy from a photovoltaic (PV) array during the day and allow for its dispersal at night in the form of near boiling water. Looking at our user’s needs, we broke our design solution into four components: water heating, storage, distribution, and controls. Research of all components was conducted to ascertain which …
Modular Cable Buoy, James J. Marinas, Gabriela Vargas, Anthony Catello, Joseph Heald
Modular Cable Buoy, James J. Marinas, Gabriela Vargas, Anthony Catello, Joseph Heald
Mechanical Engineering
Cable terminations are often the least reliable and most expensive components of a maritime system. These cables are suspended in water by a buoy to reduce wear at the terminations. The Naval Information Warfare Center requires a modular auxiliary float with tunable buoyancy that can be placed along such cable. Our system must be able to be deployed, adjusted, and retrieved quickly and easily during operational use. This report focuses on our team’s final design concept and includes all analysis to justify our design direction along with safety, maintenance, and repair considerations. The report further elaborates on cost analysis, manufacture …
Display Significance At Planes Of Fame Air Museum, Callie Ann Maloney
Display Significance At Planes Of Fame Air Museum, Callie Ann Maloney
Social Sciences
History museums record and memorialize deeply affecting historical events. They offer opportunities to enhance and build on the history taught. Displayed artifacts and memorabilia can narrate significant stories from the past and provide an educational background. This paper is about the Planes of Fame Air Museum and the focus is on ways that they have significantly memorialized their collection of rare warbirds. I begin by providing background information about the founder and how his visions led him to building a successful aviation museum. The vision of Planes of Fame is to preserve aviation history through the restoration and flying of …
Economic Barriers To Media Entrepreneurship And Media Plurality, Aidan Christopher Mcgloin
Economic Barriers To Media Entrepreneurship And Media Plurality, Aidan Christopher Mcgloin
Journalism
The purpose of this article started out with a simple hypothesis: the lack of media plurality in America is due to an increase in news publishing costs and standards over the past hundred years. News presses have increased in so much cost that new publishers have no chance to front the high up-front cost or maintain journalistic quality with their competition.
The Yanks Are Striking: Kern County, The 1921 Oil Strike And The Discourse On Americanism, Peter F. Hussey
The Yanks Are Striking: Kern County, The 1921 Oil Strike And The Discourse On Americanism, Peter F. Hussey
Master's Theses
In the fall of 1921 oil workers of the San Joaquin Valley faced a post-war economic slump, wage cuts across the board and an increasingly hostile attitude of oil operators towards consultation with the federal government on labor relations. They voted to strike, and the next day eight thousand workers walked off the fields. Strikers crafted an image of “patriotic unionism,” underpinned by a faith in the federal government and the ideology of the American Legion. The strike did not end in gruesome class warfare like had been seen months earlier in the coal mines of West Virginia, but rather …
Planning And Power: Architectural Reflections Of Student Minorities At Cal Poly, Caroline Ambrose
Planning And Power: Architectural Reflections Of Student Minorities At Cal Poly, Caroline Ambrose
Cal Poly's History: Student Research Reports
This paper will dis sect the power dynamics of the built environment at California Polytechnic State University San Luis Obispo (Cal Poly) as it relates to spatial representation for minorities on campus. By observing campus growth throughout the university’s history through the lenses of campus minorities, including women, black students, queer students, and disabled students, a pattern of dismissal and reluctanct compliance comes to light. While the administration’s rhetoric often reflects goals of inclusivity and diversity, the architectural history of Cal Poly reflects a lack of investment and reaction to the concerns of student minorities.
Mechanical Tear Testing And Failure Analysis Of Armordillo® Textile For Future Comparison With Next Generation Replacement Textiles, Jordan Bryce Pohl
Mechanical Tear Testing And Failure Analysis Of Armordillo® Textile For Future Comparison With Next Generation Replacement Textiles, Jordan Bryce Pohl
Materials Engineering
ArmorDillo® is a heavy-duty, waterproof textile designed to protect valuable equipment against outdoor elements such as rain, dirt, salt, ultraviolet rays, and damage from other external factors that is manufactured by Transhield® USA and is currently in service with many branches of the United States Armed Forces, primarily the United States NAVY. Due to emerging security threats to classified military hardware the US NAVY through the United States Naval Surface Warfare Center (NSWC) is actively researching and sourcing a textile replacement for ArmorDillo® to meet these threats. This study investigates the mechanical durability of ArmorDillo® under …
Cyber: The Ultimate Political Weapon, Shafali Raj
Cyber: The Ultimate Political Weapon, Shafali Raj
Paideia
Cyber is one of the newest frontiers we face as a modern society. There are many unknowns when it comes to this intangible platform that has become shared globally. Political Science takes an interest in cyber because today it is used as a battle ground for attackers on the international scale. Our understanding of cyber warfare is still emerging, and much scholarship fails to discuss the usage of the United States’ use of such weapons. This paper goes beyond a discussion of coders and hackers leaking into government data and instead focuses on the evidence of cyber as a weapon …
What Does Special Forces Usage Demonstrate About Us Foreign Policy Goals?, Jack Hopkins
What Does Special Forces Usage Demonstrate About Us Foreign Policy Goals?, Jack Hopkins
Paideia
This research paper focuses on the interrelatedness between the deployment of US Special Forces, in both combat and supporting capabilities, and the accomplishment of US foreign policy goals around the world. Using a qualitative methodology, this paper uses primary sources such as reports from Special Operations Forces commanders, CRS reports, and other forms of Congressional documentation to investigate the relationship. This paper will use three case studies to illustrate specific foreign policy goals: firstly, counter-narcotics operations in Columbia; secondly, counter-terror operations throughout the Middle East; and finally, counter-terror operations throughout the African continent. The implications of this paper indicate that …
Send Them Your Heart: Usa For Africa, The Eritrea Shallow Wells Project, And A Song That Defined American Pop Culture, Charlie Williams
Send Them Your Heart: Usa For Africa, The Eritrea Shallow Wells Project, And A Song That Defined American Pop Culture, Charlie Williams
History
No abstract provided.
難於登天 Harder Than Climbing To Heaven: Fighter Aviation In The Republic Of China Air Force (1928-1994), Jordan Andy Li
難於登天 Harder Than Climbing To Heaven: Fighter Aviation In The Republic Of China Air Force (1928-1994), Jordan Andy Li
History
A study of the founding and evolution of the Republic of China (ROC) Air Force's fighter aviation from 1928-1994. Topics include Chinese Air Force during the Second Sino-Japanese War (1937-1945), Chinese Civil War, and cross-Taiwan Strait relations throughout the Cold War.
A Carrier-Pigeon Uas For South Pole Data Transfer, Shaun P. Wixted
A Carrier-Pigeon Uas For South Pole Data Transfer, Shaun P. Wixted
Master's Theses
The assessment of feasibility of an Unmanned Aircraft System (UAS) that is specifically tailored—in performance, operating and support characteristics, and payload—to support hardware-based data transfer from South Pole Station in Antarctica to a location of high connectivity has been undertaken. Due to the specific location of the Amundsen-Scott South Pole station and competing demands from other governmental agencies, satellite connectivity requirements for data transfers cannot be met at the South Pole. In the recent decades, the advancement in UAS capabilities have overwhelming extended their operational reach in military and commercial reconnaissance and surveillance missions. This UAS has the potential to …
Breakpoint Analysis Of Modis Vegetarian Cover Change In Southern California Deserts, Rebecca Baiman
Breakpoint Analysis Of Modis Vegetarian Cover Change In Southern California Deserts, Rebecca Baiman
STAR Program Research Presentations
This study applies time series breakpoint analysis to look at Moderate Resolution Imaging Spectroradiometer (MODIS) data of southern California. Past studies have looked at this desert land using Landsat data in order to analyze any changes the environment has gone through due to renewable energy development or other factors. This study develops a method for utilizing structural change models to study the DRECP land area. Focusing on breakpoints, this study found that most positive breakpoints represented years with high rainfall. Additionally, sandy washes with little vegetation did not yield any breakpoint between 2000 and 2018. This study can be used …
Beyond Human Intelligence: Redefining Intelligence, Jens Pohl
Beyond Human Intelligence: Redefining Intelligence, Jens Pohl
Architecture
The digital revolution driven by global connectivity, computing as a utility, artificial intelligence, and information sharing on an unprecedented scale is forcing the redefinition of intelligence in a broader context that extends beyond human intelligence. This paper addresses the principal characteristics of biological intelligence, as it exists on planet Earth and the form it may take in an extraterrestrial context. Human intelligence, as the most evolved form of biological intelligence on Earth, is treated as the aggregation of multiple intelligences that cannot be encapsulated in a single metric such as an Intelligence Quotient (IQ). The concept of a postbiological civilization …
Fowler Studio Detroit 2018, Thomas Fowler, Iv
Analyzing Global Cyber Attack Correlates Through An Open Database, Brady Benjamin Aiello
Analyzing Global Cyber Attack Correlates Through An Open Database, Brady Benjamin Aiello
Master's Theses
As humanity becomes more reliant on digital storage and communication for every aspect of life, cyber attacks pose a growing threat. However, cyber attacks are generally understood as individual incidents reported in technological circles, sometimes tied to a particular vulnerability. They are not generally understood through the macroscopic lens of statistical analysis spanning years over several countries and sectors, leaving researchers largely ignorant of the larger trends and correlates between attacks. This is large part due to the lack of a coherent and open database of prominent attacks. Most data about cyber attacks has been captured using a repository of …
President Jimmy Carter As An Activist?: Understanding President Carter’S Human Rights Policy In El Salvador During 1980 Through A Social Justice Lens, Vanaaisha Das Pamnani
President Jimmy Carter As An Activist?: Understanding President Carter’S Human Rights Policy In El Salvador During 1980 Through A Social Justice Lens, Vanaaisha Das Pamnani
History
During 1980, Salvadoran citizens endured increased violence, torture, and overall suppression of their basic human rights. Many prominent figures were assassinated by either right-wing death squads or leftist insurgents. Then on December 2, 1980 came the murder of four American churchwomen from the Maryknoll Order. Their purpose was to aid the poor within Latin America; El Salvador gave them the opportunity to help the Salvadoran poor in the midst of this violence. However, they were met with suspicion by security forces and, as a result were raped and killed on a dirt road. Within a week, President Jimmy Carter cut …
Academic Senate - Agenda, 5/29/2018, Academic Senate
Academic Senate - Agenda, 5/29/2018, Academic Senate
Academic Senate Agendas
No abstract provided.
Use Of Drone Technology On Commercial Construction Projects, Andrew Lin
Use Of Drone Technology On Commercial Construction Projects, Andrew Lin
Construction Management
Every successful construction project is an intricate symphony of project management, jobsite operations, and skilled laborers doing what they do best. While traditional means and methods have proven themselves to be reliable and effective, companies must now look into new and improved approaches to expedite their project delivery and maintain their competitive edge in this booming and demanding market. Furthermore, as expectations for new commercial projects grow, the risks of taking on these projects increase alongside them. Skyscrapers are expected to be taller, buildings more efficient, and company campuses vaster and more state-of-the-art than ever before. With technological innovations such …
La Historia Que Olvidamos: The Historiography Of Colonial Afro-Mexican Culture, Jack Boudreau
La Historia Que Olvidamos: The Historiography Of Colonial Afro-Mexican Culture, Jack Boudreau
The Forum: Journal of History
No abstract provided.
Space Privatization, Colonization, And Militarization: A New Frontier For International Law, Juan A. Ortiz Salazar
Space Privatization, Colonization, And Militarization: A New Frontier For International Law, Juan A. Ortiz Salazar
Paideia
Early into the 21st century, technological developments made unparalleled advances in the field of space. The realm of outer space has seen a change from exploration to technology-driven, ambitious goals more aligned with national interests and security. In this paper I ask the following research question: How can international organizations and law address the rapid advances in space exploration? To answer the research question, I conducted three case studies: 1) space privatization, 2) space colonization, and 3) space militarization. According to my research, existing international law cannot inhibit conflict in the 21st century characterized by intense competition to obtain space …
The Relationship Between Structural Parameters And Mechanical Properties Of Cactus Spines, Jorge Armando Martinez, Pamela Liz Szeto, Theresa Mae Stewart
The Relationship Between Structural Parameters And Mechanical Properties Of Cactus Spines, Jorge Armando Martinez, Pamela Liz Szeto, Theresa Mae Stewart
Materials Engineering
Considering an increasing interest in renewable, biodegradable resources that exhibit excellent mechanical properties, 24 species of cactus spines were investigated using three-point bend testing, X-ray diffraction (XRD) for structural parameters, and scanning electron microscopy (SEM) to analyze fracture surfaces. Additionally, a density of about 1.3 g/cm3 was measured for each spine utilizing the displacement method, closely matching existing data from literature. The flexural modulus varied greatly between species, ranging from 1.22 GPa (Echinocactus polycephalus) to 43.58 GPa (Stenocereus thurberi). In addition, flexural strength and strain to failure was also measured for each spine. XRD analysis of …
Tensile Properties Of High-Strength Connecting Rod Bolts, Leland K. Lam
Tensile Properties Of High-Strength Connecting Rod Bolts, Leland K. Lam
Materials Engineering
Oliver Racing Parts (ORP) is looking to optimize the manufacturing process for high-strength connecting rod bolts. A high yield strength is desired for the bolts because deformation would result in a loss of engine performance. A high tensile strength is also necessary to prevent catastrophic failure if deformation occurs. A high ductility as a proxy for toughness is attractive for resisting crack nucleation and growth during cyclic loading. Bolts were made of MP35N, a nickel-cobalt multiphase alloy; MLX-17, a precipitation hardenable stainless steel; 8740, a low alloy steel; and H11, a chromium hot-work tool steel. The temperature of the most …
Comparison Of Intrusive And Non-Intrusive Methods For Corrosion Monitoring Of Fuel Processing Systems, Armando Jacob Espinoza, Thomas Conner Field
Comparison Of Intrusive And Non-Intrusive Methods For Corrosion Monitoring Of Fuel Processing Systems, Armando Jacob Espinoza, Thomas Conner Field
Materials Engineering
This presentation contains an assessment of the best overall corrosion monitoring device, intrusive or non-intrusive, for use in the petrochemical industry. Corrosion in the petrochemical industry is a large issue because it causes a deterioration of pipe integrity in fuel processing systems. A reduction of pipe wall integrity due to corrosion could result in a leak or an explosion of fuel processing lines since those systems function at high pressures. The use of corrosion monitoring systems in the petrochemical industry helps to detect early signs of corrosion prior to failure so that proper maintenance can be performed to prevent catastrophe. …