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Pathfinder: Will Johnson Blazes a Trail
Get PDFEarly September, a Tuesday, 6:40 a.m. Mist rises over the treeline along Messalonskee Stream as the sun begins to appear over the horizon. The campus is quiet until a door on the ground floor of Treworgy Hall bangs open and Will Johnson ’22 hustles outside and heads for the practice fields
The Colby Echo (February 17, 2022)
No full textPublished by the students of Colby College since 1877, The Colby Echo is the weekly, editorially independent student-run newspaper of Colby College in Waterville, Maine. Published monthly, 1877-1886; semi-monthly; 1886-1897; and weekly during the academic year, 1898-present
Decoding Cyclic Codes via Gröbner Bases
No full textIn this paper, we analyze the decoding of cyclic codes. First, we introduce linear and cyclic codes, standard decoding processes, and some standard theorems in coding theory. Then, we will introduce Gr¨obner Bases, and describe their connection to the decoding of cyclic codes. Finally, we go in-depth into how we decode cyclic codes using the key equation, and how a breakthrough by A. Brinton Cooper on decoding BCH codes using Gr¨obner Bases gave rise to the search for a polynomial-time algorithm that could someday decode any cyclic code. We discuss the different approaches taken toward developing such an algorithm and their success in creating a practical decoding process
Maternidad en España: Una investigación sobre cómo las mujeres navegan los límites patriarcales para ampliar visiones y realidades de la maternidad
No full textA través de una investigación de películas españolas, una obra de teatro y el activismo de salud pública, esta tesis disecciona la historia de la maternidad en España. Se enfoca en madres no tradicionales, que difieren de los ideales patriarcales y heteronormativos de lo que debe ser una madre débil, cómplice y en un nivel inferior a sus contrapartes masculinas. En un estudio de madres fuertes en películas que las compara con ejemplos de la actualidad, argumento que las madres no tradicionales en España experimentan momentos de autonomía, empoderamiento e independencia. Sin embargo, estos momentos existen y dependen de una economía y cultura patriarcal que limita oportunidades específicas para la agencia femenina. Más específicamente, a través de un enfoque interseccional, muestro cómo las madres de bajos ingresos, las madres queer y las mujeres de color navegan el paisaje patriarcal en España. Investigando cómo estas mujeres practican la maternidad a pesar de las restricciones impuestas en ellas demuestra cómo estas mujeres amplían visiones de lo que significa ser madre en España. Además, analizo más de cerca cómo las mujeres tienen acceso equitativo y de calidad a recursos de planificación familiar, técnicas de reproducción asistida y anticonceptivos sexuales
Is Monetary Policy Neutral? The Effectiveness of Monetary Policy Transmission across the Income Distribution
No full textThis paper analyzes the role of the interest rate channel of monetary policy on household consumption sensitivities across the income distribution. To study this, I build a heterogenous agent model where households experience interest rate shocks as a proxy for monetary policy in addition to income shocks. I find that the poorest quintile increases consumption by about 4.5% in response to a recessionary interest rate cut, with this effect weakening for each additional quintile. When interest rate shocks differ by income group, the poorest lose about 3.6% of consumption and monetary policy’s effect on aggregate consumption weakens. When the income distribution skews more toward the upper quintiles, these effects amplify. If agents lose income in recessions, the effect of an interest rate cut is greatly dependent on whether households are subject to disparate rate policy. My results suggest that the traditional interest rate channel might be less effective at stimulating demand for high income individuals than as intended by policy makers
Analyzing the Free Energy of Ions Sampling a Voltage Gated Sodium Ion Channel
No full textVoltage gated sodium ion channels are implicated in cardiac diseases, seizures, etc., and they play a role in maintaining ionic homeostasis in cells. Computational studies use prokaryotic model because they are simpler but function similarly to human voltage gated sodium ion channels. This study uses molecular dynamics (MD) to study three specific questions regarding voltage gated sodium ion channels of Magnetococcus marinus. The first question in this study is how the free energy of sodium diffusion compares to that of calcium ion diffusion. We were not able to find any physically significant information due to poor sampling and a lack of ion diffusion. We also examined the role of the hydration shell and protonation state in conferring selectivity to the voltage gated sodium ion channel. This study does not find evidence that the size of the hydration shell or protonation state of the glutamate ring in the selectivity filter contributes to selectivity against calcium ions. Additionally, the water itself has no significant interactions with the amino acid residues. A key conclusion from this study is that approximating the location of the uncrystallized residues using the GalaxyFill algorithm does not accurately represent experimental voltage gated ion channels because it occasionally predicts non-physical conformations that result in the interlocking of rings of the residues with other residues and may be biased towards the formation of loops in the system
The Colby Echo (October 27, 2022)
No full textPublished by the students of Colby College since 1877, The Colby Echo is the weekly, editorially independent student-run newspaper of Colby College in Waterville, Maine. Published monthly, 1877-1886; semi-monthly, 1886-1897; and weekly during the academic year, 1898-present
The Colby Echo (November 3, 2022)
No full textPublished by the students of Colby College since 1877, The Colby Echo is the weekly, editorially independent student-run newspaper of Colby College in Waterville, Maine. Published monthly, 1877-1886; semi-monthly, 1886-1897; and weekly during the academic year, 1898-present