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Topology of Bloch impedance: Traveling waves, dispersive media, and electromagnetic energy
No full textThe bulk-boundary correspondence (b-bc) principle, which relates interface modes between two periodic structures to topological invariants of the respective Bloch bands, is widely accepted in electrodynamics. However, this acceptance stems largely from condensed matter (CM) theories. It is desirable to establish direct connections between the topological principles and Maxwell electrodynamics, rather than relying on CM results. Such connections have in recent years been found in the case of standing evanescent waves in periodic dielectric media. This paper extends these analyses to waves propagating along an interface between two periodic structures, possibly with frequency-dependent dielectric permittivities. The paper shows that the b-bc principle continues to hold for any physically realizable structures, in which the density of electromagnetic energy must be positive. The paper rigorously proves that in this physically valid case impedance of traveling interface modes within any given bandgap decreases monotonically as a function of frequency
Review of: \u3cem\u3eWomen Talking\u3c/em\u3e [film]—Sarah Polley
Get PDFWomen Talking (directed by Sarah Polley) is a film that was released in 2022 and is based on Miriam Toews’ 2018 novel of the same name. Both the film and the novel are, in turn, based on events that took place in the early 2000s in Manitoba Colony, Bolivia, where Old Colony Mennonite men raped and assaulted women and girls in their own community. This review contextualizes the movie by explaining Old Colony Mennonite beliefs, religious practices, and migrations, and then it summarizes the film and offers some thoughts about outsiders’ fascination with the film. [First paragraph.
Reactive Hypotheticals in Legal Education: Leveraging AI to Create Interactive Fact Patterns
Get PDFGood legal hypotheticals require carefully constructed scenarios designed to mimic the challenges and dilemmas that students will face in their future legal careers. Hypotheticals help students take abstract concepts such as negligence or res ipsa loquitor and ground them in the reality that these rules were meant to control. Yet, despite our best efforts, creating hypotheticals with a rich tapestry of facts, personalities, and complexities that characterize real-world legal practice remains challenging and time-consuming. Artificial Intelligence (AI) can solve this problem. By leveraging emerging AI technology, legal educators can create richer, more realistic hypotheticals that react to students and keep track of information. Not only are reactive hypotheticals more realistic, but they’re also much easier and less time-consuming to create. With the power of AI and reactive hypotheticals, students can now take the legal doctrine they learn in law school and apply it to factual scenarios that mimic real life
Pipelines & Presidential Candidates: The Dynamics of Women Running for Public Office in Ohio
Get PDFOver one hundred years ago, Ohio was at the forefront of women’s political participation. In 1872, Victoria Woodhull became the first woman to run for president. In 1922, six women were elected to the Ohio state legislature for the first time, and Florence Allen was elected to the Ohio Supreme Court, making her the first woman to be elected to any state supreme court in the nation. This research looks at where the state stands now in the number of women running for office, their success rates, and the impact of having a woman at the top of the ticket. The results show that while the state can claim multiple historic famous firsts, today women candidates are still significantly underrepresented at all levels of Ohio’s legislative political hierarchy: women won only 17.8% of legislative seats in 2024. The pyramid predicted by the pipeline theory that more women run at the lower levels of the political hierarchy is not evident in Ohio; there are very few women at the bottom in county legislative offices in addition to very few women at the top. Assessing the role-model effect, our data across legislative offices present no clear or consistent evidence that having a woman running for president significantly boosted women’s electoral success down-ballot
Elongate Locomotors Show Consistent Torque Patterns Across Substrates
Get PDFThe four main movements found in snakes are understood mainly due to external study; however, muscular forces and resulting torques are poorly known. The main research objective is to study the torque production on different substrates using a snakebot. The study will give a rudimentary model for torque production on different substrates. It can then be compared against biological systems to understand snake movement at a muscular level. This study used a snakebot, allowing direct assessment of the current being run through each of its motors (proportional to torque). Data was then examined using a Principal Component Analysis test for patterns and variation. Results showed less variance on smooth substrates than on the obstacle-embedded rough substrate. With the latter, rough surface torque increased throughout each of the motors. One of the study\u27s important insights was a cyclic movement in smooth and rough substrates, producing a consistent Sine and Cosine wave. The study\u27s significance is that torques in each system were broadly similar in pattern, primarily differing in magnitude and variability between substrates. Potential applications from this study include incorporating cyclic movement in biomimetic systems and studying biological systems to determine what torque forces are being applied through a biological system
Monitoring a Small Network with SNMP
Get PDFThis project takes a look at the implementation of three distinct free Network Monitoring Systems (NMSs) and their usage of monitoring a small, virtualized network using the Simple Network Management Protocol (SNMP). The 3 free NMSs are PRTG, LibreNMS, and Zabbix. The network is virtualized within Cisco Modeling Labs. A literature review on relevant media is conducted alongside a review of the three NMSs based on installation difficulty, user friendliness, reporting ability, and their ability to respond to changes in the network. A brief discussion on the difference between an SNMPv2 and SNMPv3 packet is included as well
Autonomous Landscape Exploration Rover Using Imaging Surface Navigation (ALEXIS)
Get PDFThe objective is to develop a small-form-factor rover prototype that can be used to prove out a novel traversal method for use on extraterrestrial surfaces. The novel traversal method being proposed is LIDAR/CV-enhanced navigation, provided by a detachable flight vehicle that can communicate with the rover. On planets with thin atmospheres, cold gas thrusters or similar may be needed, but for the scope of this project more traditional flight/propulsion methods will be used
Understanding the Impact of Foster Care on Child Development
Get PDFThis project aims to explore the developmental impact of the foster care system on children, focusing on how early trauma and systemic factors influence emotional, social, and cognitive development. Through a systematic literature review, the project will highlight the unique experiences foster children face, examining how early adversity shapes their long-term outcomes. The project will emphasize the importance of trauma-informed care in educational environments, advocating for strategies that create supportive and empathetic classrooms. The objectives include identifying key challenges for foster children and offering recommendations for teachers and school administrators to effectively engage students impacted by trauma. The study also aims to provide practical tools for educators to foster positive developmental outcomes, benefiting not only children in foster care but all students. As a future educator, I will gain a deeper understanding of trauma and its impact on child behavior, equipping me with the skills to create inclusive classrooms. This research aligns with my personal and professional experiences, including my background working with foster youth and studying child development at the University of Akron. The project will bridge my academic learning with practical classroom strategies and prepare me for leadership or future graduate studies
HOT STAGING MODULE FOR MULTISTAGE ROCKETS
Get PDFHistorically, the Akronauts Rocket Design Team builds and launches two-stage rockets that rely on black powder charges as a way of stage-separation. With a hot-staging module, the second stage is ignited while still connected to the first stage, and the thrust from the second stage induces separation. To prevent rotation of the sustainer during the booster stage, the sustainer motor and fins will be axially interlocked with the module in a similar manner to the Akronauts’ previous stage separation modules. This method would reduce the number of failure modes and reduce the number of components required for stage separation. This Hot Staging Module will be designed within the team, and a CFD simulation analysis will be performed to validate and optimize this module for flight
Effects of Energy Drinks on Crayfish Physiology
Get PDFEnergy drinks have become the drink of choice among many college students due to the rush of energy it provides via the megadose of caffeine (Vercammen et al. 2019). Because of their newfound popularity, there is much research to be done about the effects on human physiology. Energy drinks are known to increase endurance in muscles of rat subjects (Imagawa et al. 2009) and stimulate enhanced “alertness” (Smit & Rogers, 2002). The purpose of this research was to uncover the potential effects that energy drinks have on metabolic rate and/or stress responses in crayfish (Procambarus clarkii), with the intent of applying the implications to human consumers. Four treatment groups (caffeine, taurine, Redbull, and deionized water as a control) were administered via tube-feeding. At regular time intervals, water samples were tested for ammonia concentration, which served as an indicator of metabolic rate and stress (Pillai & Diwan, 2002). Their physical activity was quantified prior to sample collection to observe potential differences in locomotion between the treatment groups over time. It was ultimately determined that ammonia concentration increased over time among all treatment groups. There were no significant differences in ammonia concentration or accumulation rate among the treatment groups, suggesting no effect of Redbull on the metabolic rate or stress response of crayfish. Activity measurements yielded a similar response, with no significant differences among treatment groups. However, future research may be conducted to test physiological effects of energy drinks on crayfish using different indicators, such as glucose concentration of hemolymph (Bonvillain et al. 2012