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[Seminario Línea de Matemáticas grupo GAUNAL 2017-1] «Statistical modeling of bladder motion and deformation in prostate cancer radiotherapy» / «Optimal control system for traffic lights networks»

La línea de matemáticas avanzada para el control y los sistemas dinámicos del Grupo de Automática de la Universidad Nacional de Colombia (Gaunal) de la Facultad de Minas de la UN sede Medellín invita a las exposiciones:

Statistical modeling of bladder motion and deformation in prostate cancer radiotherapy

Prostate cancer is the most common cancer amongst the male population in most developed countries.  One of the standard treatment methods is external radiotherapy, which involves delivering ionizing radiation to a clinical target, namely the prostate and seminal vesicles. Due to the uncertain location of organs during treatment, healthy organs neighboring the prostate — the bladder and rectum — may be highly irradiated, resulting in adverse events affecting patients' urinary (hematuria and cystitis, among others) or rectal (rectal bleeding, fecal incontinence, etc.) functions. The bladder is notorious for presenting the largest inter-fraction shape variations during treatment, caused by continuous changes in volume. These variations in shape introduce geometric uncertainties that render assessment of the actual dose delivered to the bladder during treatment difficult, thereby leading to dose uncertainties that limit the possibility of modeling dose-volume response for late genitourinary (GU) toxicity. As a result, it appears crucial to quantify uncertainties produced by inter-fraction bladder variations in order to determine dosimetric factors that affect late GU complications.

Expositor: Richard Ríos Patiño

Fecha y hora: viernes 3 de marzo de 2017, 10:00-10:45

Lugar: aula M8-116

Optimal control system for traffic lights networks

Optimal control strategies of traffic lights are implemented on traffic networks to improve the  performance indexes, such as delays, fuel consumption and emission of polluting gases, maintaining the objective of safe interchange between roads. These objectives are translated into mathematical functions that allow to calculate the traffic ligths variables (timing, cycle, offset) each period of time, accomodating to the dynamics of the network vehicles volumes, and managing the available resources of the road infraestructure to serve the users.

Expositora: Laura María Noreña

Fecha y hora: viernes 3 de marzo de 2017, 11:00-11:45

Lugar: aula M8-116

Los seminarios son dirigidos por el profesor Jairo José Espinosa Oviedo.

Información adicional: Magda Pinto Vargas, , teléfono (+574)4255295

[Boletín UN Investiga 334, 23 de febrero de 2017]