Thirty years of point group theory applied to reactor physics

A brief survey of applications of point groups to reactor physics is given. First, the general principles of applications of point groups are summarized, this is followed by a short historical review. Two instances of applications in reactor physics are mentioned: the analytical solution to the few group diffusion theory is given based on symmetry considerations. The analytical solution has made it possible to investigate Selengut’s principle and conclude that in general, in the solution process in region D it is not possible to replace a heterogeneous domain Dh ⊂ D by a homogeneous material so that the solution to the few group diffusion equation outside the replaced part, i.e. in D−Dh would remain unchanged

Combinatorial optimization model for railway engine assignment problem

This paper presents an experimental study for the Hungarian State Railway Company (M\'AV). The engine assignment problem was solved at M\'AV by their experts without using any explicit operations research tool. Furthermore, the operations research model was not known at the company. The goal of our project was to introduce and solve an operations research model for the engine assignment problem on real data sets. For the engine assignment problem we are using a combinatorial optimization model. At this stage of research the single type train that is pulled by a single type engine is modeled and solved for real data. There are two regions in Hungary where the methodology described in this paper can be used and M\'AV started to use it regularly. There is a need to generalize the model for multiple type trains and multiple type engines

Bull Outdoor Products - Electric Grill

Our senior design project team designed, assembled, and tested an outdoor electric grill. The sponsor for our project is Bull Outdoor Products, a high-end outdoor kitchen set, pizza oven, and grill company. We met with our sponsor to discuss project expectations and important product characteristics. We also researched the barbecue market and its customers to determine what grill characteristics are the most important. We learned which engineering specifications needed to be tested and outlined what our goals and overall objectives for this project are. With our background research and overall objectives in mind, we came up with different solutions through ideation and then narrowed down the ideas to a single solution. We created a concept prototype of our design to showcase its potential features and observe any possible design flaws. We created a CAD model and respective detailed drawings to specify our desired design and manufacturing plans. Additionally, we designed an electrical circuit that would fit the needs of the griller. Next, we built a structural prototype to test the heating element. Lastly, we combined all the components in the grill and tested it to see how it stacked up against our initial engineering specifications. This document was written chronologically, from September 2020 to June 2021, and thus the writing in each section is reflective of the stage of the project we were in during that section

Fluorescence kinetics of flavin adenine dinucleotide in different microenvironments

Fluorescence kinetics of flavin adenine dinucleotide was measured in a wide time and spectral range in different media, affecting its intra- end extramolecular interactions, and analyzed by a new method based on compressed sensing