STEM Conference 2019

Conference Program with all presentation

COMPUTER MODELING AND SIMULATION OF IMPLANTABLE MEDICAL DEVICE HEATING DUE TO MRI GRADIENT COIL FIELDS

For patients with implantable medical devices, the ability to safely undergo MRI scanning is critical to ensuring the highest standard of care. The gradient coils of an MRI generate kilohertz frequency, time varying magnetic fields. These magnetic fields induce a voltage on the external case of metallic, implantable medical devices through electromagnetic induction. Since the magnetic field generated by a gradient coil is time varying, the induced voltage results in the flow of eddy currents which can cause heating effects. These heating effects have been successfully modeled using ANSYS Maxwell and ANSYS Mechanical software packages. The multi-physics simulation and solution used ANSYS Maxwell for electromagnetic field simulation and ANSYS Mechanical for the transient thermal simulation while utilizing ANSYS Workbench to integrate the models. To validate the model, simulations and physical testing were completed on a number of samples that varied in size and material. The model was then used to simulate the impact of implant size (both radius and thickness) on MRI gradient induced heating. These results can be used to support MRI safety assessments and design choices for a range of implantable medical devices. The current regulatory landscape requires extensive safety testing that is often expensive and time consuming. While the complicated question of medical device heating due MRI gradient coil fields remains open, computer simulation is now a proven tool that can provide easier and more thorough analysis for future evaluations

Network Science: Fish Supply

Objective The student will understand how being a part of a network (e.g. different roles) influences an individual’s decision-making in addition to understanding positions of power within a fish supply network. The student will be able to identify fish transfer (and money) in a fish supply chain network while seeing how each participant’s goals compete with one another and are balanced by the network. The student will engage with NGSS Crosscutting Concept 4. Systems/System Models. The Fishing Industry has been around for a very long time. Many jobs are tied to the industry, including people who actually catch the fish, sell the fish, and everything in between. This includes marketing, transporting, and even farming the fish. The fishing industry has become very large and generates a lot of revenue globally. This industry has also gained popularity through viewership of reality tv shows (e.g. Wicked Tuna) amongst others, to demonstrate parts of the supply chain. Within the seafood industry, commercial fishing is a major component that highlights a supply chain. A supply chain is expressed as the process of making and selling goods. It includes supplies and materials, manufacturers, distributors, and consumers. Supply chains are used for many reasons, and are efficient at providing the ‘big picture’ of the flow of a good or resource amongst various stakeholders, in addition to the intercollaboration that exists amongst various stakeholders in the supply chain

Annual Report of the Maine STEM Council to the Education and Cultural Affairs Committee of the 127th Maine Legislature, January 2016

https://digitalmaine.com/stem_council/1002/thumbnail.jp

SPORT MANAGEMENT INSTRUCTORS’ ATTITUDES AND PERCEPTIONS OF STUDENTS AND STUDENT-ATHLETES

To investigate the attitudes that sport management instructors hold toward students and student-athletes, an adapted version of the Situational Analysis Scale (SAS) was completed by 247 faculty members across the United States at institutions of varying size, scale, and classification. The results indicated that sport management instructors held significantly different negative attitudes toward male revenue-generating student-athletes compared to female revenue-generating student-athletes and general population students. The findings hold implications for individuals working in sport management programs, academic services for athletics as well as general student affairs

Maine STEM Education and Workforce Plan 1.0

https://digitalmaine.com/stem_council/1000/thumbnail.jp

Network Science: Play Dough Liaisons

Brokers play an important role in the access of information and transactions. What makes a person a broker is the fact that the parties the broker is connected to have no way of communicating with each other without the broker. This gives a broker power in what they choose to do with the information they have received. For more information, see the brokerage role sheet (Handout 2). According to the brokerage role sheet, there are five different types of brokers. The brokerage roles can all be depicted as having directed or undirected lines, except for the gatekeeper and the representative. Directed lines are used to differentiate between gatekeepers and representatives, but if the lines are undirected, then the situation depicts a broker that is both a gatekeeper and representative. Vertices that are different colors in the brokerage role depictions mean that they belong to different groups, while vertices that are the same color indicate that they belong to the same group. The second vertex in every brokerage role depiction on the brokerage role sheet is the broker. A liaison is a type of broker where everyone belongs to a different group or category. People are not always aware that they are brokers, so analyzing their social network can allow them to determine their role(s) and discover how information flows within that network. Objective The student will understand the basic concept of brokerage roles and their applications to health communication through gameplay. The student will be able to demonstrate how liaisons, a form of broker, have more power than others in communication networks. The student will engage with NGSS Crosscutting Concept 4. Systems/System Models

Leo Christine Stem to Sir (2 October 1962)

https://egrove.olemiss.edu/mercorr_pro/1500/thumbnail.jp