Video Prioritization for Unequal Error Protection

We analyze the effect of packet losses in video sequences and propose a lightweight Unequal Error Protection strategy which, by choosing which packet is discarded, reduces strongly the Mean Square Error of the received sequenc

Un texto académico del ocaso del siglo XVII: el "Discurso sobre el microscopio" de José Ortí y Moles (Estudio y edición)

El Discurso sobre el microscopio del Dr. José Ortí Moles (1650-1728) es el texto de una conferencia impartida en Valencia a finales del siglo XVII. Su autor un conocido jurista, dramaturgo y poeta fue invitado por alguna de las academias a las que perteneció ¿del Conde de la Alcudia? ¿Valenciana? a disertar sobre un tema que supuestamente dominaba como amateur. La exposición superficial, obsoleta, sesgada hacia la metáfora político-moral y basada en la obra de los jesuitas PP. Kircher, Schott y Milliet Dechales nos proporciona un magnífico testimonio del estado de conocimientos y del grado de aspiraciones intelectuales alcanzado por las academias valencianas de notables. (A

Determinación de polifenoles en el vino

El projecte forma part d’un estudi que s’està realitzant a al Universitat de Barcelona, dintre del departament de Quimiometria. L’objectiu de l’estudi és el desenvolupament d’una metodologia analítica que permeti la determinació de polifenols en el vi mitjançant cromatografia de líquids (HPLC), electroforesis capil·lar (CE), espectrofotometria y fluorescència. Aquest projecte es centra en estudiar i intentar establir la relació entre els polifenoles i diferents característiques del vi, tals com la denominació d’origen, la varietat de raïm i l’any de collita (edat del vi)

Simultaneous emission and attenuation reconstruction in time-of-flight PET using a reference object

BACKGROUND: Simultaneous reconstruction of emission and attenuation images in time-of-flight (TOF) positron emission tomography (PET) does not provide a unique solution. In this study, we propose to solve this limitation by including additional information given by a reference object with known attenuation placed outside the patient. Different configurations of the reference object were studied including geometry, material composition, and activity, and an optimal configuration was defined. In addition, this configuration was tested for different timing resolutions and noise levels. RESULTS: The proposed strategy was tested in 2D simulations obtained by forward projection of available PET/CT data and noise was included using Monte Carlo techniques. Obtained results suggest that the optimal configuration corresponds to a water cylinder inserted in the patient table and filled with activity. In that case, mean differences between reconstructed and true images were below 10%. However, better results can be obtained by increasing the activity of the reference object. CONCLUSION: This study shows promising results that might allow to obtain an accurate attenuation map from pure TOF-PET data without prior knowledge obtained from CT, MRI, or transmission scans.This work was supported by a grant from the Comunidad de Madrid (2016-T1/TIC-1099). The CNIC is supported by the Instituto de Salud Carlos III (ISCIII); the Ministerio de Ciencia, Innovación y Universidades (MCNU); and the Pro CNIC Foundation, and is a Severo Ochoa Center of Excellence (SEV-2015-0505).S

Data-Analytics Modeling of Electrical Impedance Measurements for Cell Culture Monitoring

High-throughput data analysis challenges in laboratory automation and lab-on-a-chip devices’ applications are continuously increasing. In cell culture monitoring, specifically, the electrical cell-substrate impedance sensing technique (ECIS), has been extensively used for a wide variety of applications. One of the main drawbacks of ECIS is the need for implementing complex electrical models to decode the electrical performance of the full system composed by the electrodes, medium, and cells. In this work we present a new approach for the analysis of data and the prediction of a specific biological parameter, the fill-factor of a cell culture, based on a polynomial regression, data-analytic model. The method was successfully applied to a specific ECIS circuit and two different cell cultures, N2A (a mouse neuroblastoma cell line) and myoblasts. The data-analytic modeling approach can be used in the decoding of electrical impedance measurements of different cell lines, provided a representative volume of data from the cell culture growth is available, sorting out the difficulties traditionally found in the implementation of electrical models. This can be of particular importance for the design of control algorithms for cell cultures in tissue engineering protocols, and labs-on-a-chip and wearable devices applicationsEspaña, Ministerio de Ciencia e Innovación y Universidades project RTI2018-093512-B-C2

Renovación intelectual y prestigio social: "Novatores", academias e instituciones públicas en la Valencia de finales del siglo XVII y principios del XVIII

Los partidarios de la renovación literaria, científica y filosófica alcanzaron gran prestigio e influencia en la Valencia de finales del siglo XVII. La fundación de academias de diferentes tipos y orientaciones constituye la más acabada expresión de esta realidad. El nacimiento de la Academia del Alcázar, las actividades desarrolladas por sus miembros como manifestación de una incipiente cultura cortesana durante la penúltima década de la centuria y la dimensión política que cabe atribuir a todas ellas son analizadas en la segunda parte de este artículo. (A