VIPS: simple, efficient, and scalable cache coherence

Directory-based cache coherence is the de-facto standard for scalable shared-memory multi/many-cores and significant effort is invested in reducing its overhead. However, directory area and complexity optimizations are often antithetical to each other. This talk presents VIPS, a family of cache coherence protocols based on self-invalidation and self-downgrade. VIPS protocols remove the complexity and cost associated with directories in their entirety, thus increasing multiprocessors scalability, and at the same time, provide better performance and energy efficiency than traditional directory-based protocols

Invariantly universal analytic quasi-orders

We introduce the notion of an invariantly universal pair (S,E) where S is an analytic quasi-order and E \subseteq S is an analytic equivalence relation. This means that for any analytic quasi-order R there is a Borel set B invariant under E such that R is Borel bireducible with the restriction of S to B. We prove a general result giving a sufficient condition for invariant universality, and we demonstrate several applications of this theorem by showing that the phenomenon of invariant universality is widespread. In fact it occurs for a great number of complete analytic quasi-orders, arising in different areas of mathematics, when they are paired with natural equivalence relations.Comment: 31 pages, 1 figure, to appear in Transactions of the American Mathematical Societ

Hans Blumenberg: filosofía y la literatura entre 1952 y 1958

From 1952 to 1958 Hans Blumenberg [1920-1996] wrote five philosophical reviews on literature published in the German journal Hochland that have received very little attention by the scholars. This paper focus on Blumenberg’s early reviews devoted to Franz Kafka [1883-1924], Evelyn Waugh [1903-1966], Ernest Hemingway [1899-1961], Thomas S. Eliot [1888- 1965] and William Faulkner [1897-1962].Entre 1952 y 1958 Hans Blumenberg [1920-1996] escribió cinco reseñas literarias, de marcado carácter filosófico, para la revista alemana Hochland. Estas reseñas han recibido muy poca atención por parte de los especialistas interesados en el pensamiento de Blumenberg. En este artículo abordaremos sus análisis tempranos de la obra de Franz Kafka [1883-1924], Evelyn Waugh [1903-1966], Ernest Hemingway [1899-1961], Thomas S. Eliot [1888-1965] y William Faulkner [1897-1962]

Diet-disease relationships : recent advances in nutritional epidemiology

Nutritional epidemiology currently studies the diet-disease relationships. In order to evaluate these associations, an accurate estimation of nutritional exposure is essential. Traditional dietary questionnaires are being complemented with the measurement of nutritional biomarkers. New methodologies, including the use of new dietary assessments, metabolomics for increasing the quantity and quality of biomarkers, and statistical approaches to combine both techniques, are required to move forward in this field. In this review, we have selected five of the more relevant accomplishments in this field as examples of the importance of dietary factors in the prevention of non-communicable diseases. This theoretical knowledge needs to be finally translated by public health experts into dietary recommendations to the general population

Joint coarse-and-fine reasoning for deep optical flow

© 20xx IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.We propose a novel representation for dense pixel-wise estimation tasks using CNNs that boosts accuracy and reduces training time, by explicitly exploiting joint coarse-and-fine reasoning. The coarse reasoning is performed over a discrete classification space to obtain a general rough solution, while the fine details of the solution are obtained over a continuous regression space. In our approach both components are jointly estimated, which proved to be beneficial for improving estimation accuracy. Additionally, we propose a new network architecture, which combines coarse and fine components by treating the fine estimation as a refinement built on top of the coarse solution, and therefore adding details to the general prediction. We apply our approach to the challenging problem of optical flow estimation and empirically validate it against state-of-the-art CNN-based solutions trained from scratch and tested on large optical flow datasets.Peer ReviewedPostprint (author's final draft

On isometry and isometric embeddability between ultrametric Polish spaces

We study the complexity with respect to Borel reducibility of the relations of isometry and isometric embeddability between ultrametric Polish spaces for which a set $D$ of possible distances is fixed in advance. These are, respectively, an analytic equivalence relation and an analytic quasi-order and we show that their complexity depends only on the order type of $D$. When $D$ contains a decreasing sequence, isometry is Borel bireducible with countable graph isomorphism and isometric embeddability has maximal complexity among analytic quasi-orders. If $D$ is well-ordered the situation is more complex: for isometry we have an increasing sequence of Borel equivalence relations of length $\omega_1$ which are cofinal among Borel equivalence relations classifiable by countable structures, while for isometric embeddability we have an increasing sequence of analytic quasi-orders of length at least $\omega+3$. We then apply our results to solve various open problems in the literature. For instance, we answer a long-standing question of Gao and Kechris by showing that the relation of isometry on locally compact ultrametric Polish spaces is Borel bireducible with countable graph isomorphism.Comment: Minor imprecisions corrected. Following the suggestion of the anonymous referee, the former Section 7 concerning arbitrary Polish spaces with fixed set of distances has been left out and will be posted as a separate paper soon. The title is changed as well to reflect this modificatio

Ictiólogos de la Argentina: Alberto Nani.

En esta serie se mencionan a todos aquellos que, a través de sus pequeños o grandes aportes, contribuyeron a la consolidación de la disciplina en nuestro país. El plan general de esta contribución consiste en la elaboración de fichas individuales que contengan una lista de trabajos de los diferentes autores, acompañadas por bibliografía de referencia y, cuando ello fuera posible, por imágenes personales y material adicional. Se tratará de guardar un orden cronológico, pero esto no es excluyente, ya que priorizaremos las sucesivas ediciones al material disponible. Este es otro camino para rescatar y revalorizar a quienes en diversos contextos históricos sentaron las bases de lo que hoy es la ictiología nacional. Considero que este es el comienzo de una obra de mayor magnitud en la que se logre describir una parte importante de la historia de las ciencias naturales de la República Argentina

Proyecto de auditoría energética de una empresa dedicada a la producción de pienso animal ubicada en la región de Murcia

[ES] Este proyecto se centra en el análisis energético de una empresa de producción de pienso animal situada en la Región de Murcia centrándonos en las oportunidades de ahorro energético. Podemos destacar 3 puntos principales: 1-Analisis energético de tanto la maquinaria que interviene en el proceso de producción como de los equipos de iluminación y refrigeración de la instalación. 2-Analisis y propuesta de oportunidades de ahorro energético sin costo adicional para la empresa. 3-Analisis y propuesta de oportunidades de ahorro energético con coste para la empresa mediante sustitución de equipos.[CA] Aquest projecte se centra en l'anàlisi energètica d'una empresa de producció de pinso animal situada a la regió de Múrcia, centrant-nos en les oportunitats d'estalvi energètic. Podem destacar 3 punts principals: 1. Anàlisi energètica de punt la maquinara que intervé en el procés de producció com a equips d'il·luminació i refrigeració de la instal·lació. 2. Anàlisi proposada d'oportunitats d'estalvi energètic sense cost addicional per a l'empresa. 3. Anàlisi d'oportunitats d'estalvi energètic amb cost addicional per a l'empresa mitjançant la substitució d'equips.[EN] This project focuses on the energy analysis of an animal feed production company located in the Region of Murcia, focusing on energy saving opportunities. We can highlight 3 main points: 1-Energy analysis of both the machinery involved in the production process and the lighting and refrigeration equipment of the facility. 2-Analysis and proposal of energy saving opportunities at no additional cost to the company. 3-Analysis and proposal of energy saving opportunities at cost to the company by replacing equipment.Ros Martín, A. (2021). Proyecto de auditoría energética de una empresa dedicada a la producción de pienso animal ubicada en la región de Murcia. Universitat Politècnica de València. http://hdl.handle.net/10251/174805TFG