A time-domain fourth-order-convergent numerical algorithm to integrate black hole perturbations in the extreme-mass-ratio limit

We obtain a fourth order accurate numerical algorithm to integrate the Zerilli and Regge-Wheeler wave equations, describing perturbations of nonrotating black holes, with source terms due to an orbiting particle. Those source terms contain the Dirac's delta and its first derivative. We also re-derive the source of the Zerilli and Regge-Wheeler equations for more convenient definitions of the waveforms, that allow direct metric reconstruction (in the Regge-Wheeler gauge).Comment: 30 pages, 12 figure

Effects of Irrigation with Hch-Contaminated Water on Crop Performance and Hch Accumulation in Plant and Soil

Lindane production is very ineffective since, for each ton of lindane obtained, between 6 and 10 tons of hexachlorocyclohexane (HCH) isomers and other toxic compounds are also produced. Due to the disposal of these residues, contaminated zones still exist. Many dumpsites are close to rivers and water reservoirs. The current study examines the consequences of irrigating pea, maize and alfalfa, with water containing different HCH concentrations on the accumulation of HCH in plant material and soils. The experiments were conducted on pots under controlled conditions using drinking water (as reference) and water with several HCH concentrations: 0.5 mg L-1 (the maximum threshold allowed for human consumption), 2.5 mg L-1, 5 mg L-1, and 20 mg L-1. Results showed that both surface and overhead irrigation with these HCH concentrations did not cause any toxicity effects on the considered crops. However, under overhead irrigation with HCH concentrations higher than 5 mgL-1 HCH is absorbed by maize leaves and its concentration in plant biomass overpassed the EU maximum residue level of 10 mg kg-1 (EU, 2017). In the case of fodder maize, an HCH concentration of 0.84 mg L-1 in irrigation water produced a HCH concentration in plant above 20 µg kg-1 dry matter, the upper limit established in the Spanish legislation, that limit the use for animal feeding. In the case of alfalfa, HCH was detected in treatments with the highest HCH concentration (13 mg L-1) under surface irrigation, but concentration was below the EU maximum residue level. In conclusion, in overhead irrigated systems, water with HCH concentrations below 5 mg L-1 does not produce HCH accumulation in pea and maize grain above the maximum residue levels; however, for fodder maize, the HCH concentration in irrigation water should be controlled to avoid HCH accumulation in plants above the limit for animal feeding.overhead irrigationsurface irrigationHexachlorocyclohexaneFoliar uptakeEnvironmental riskPublishe

Al excelentissimo... D. Pedro Ioseph de Silua..., el maestre de campo D. Iuan de Bayarte Calasanz y Avalos... Capitan General de la isla de Iviça, dedica... las observaciones... concernientes a la moderna hostilidad de las bombas y carcaxes... [Texto impreso]

Sign.: A1

Geolocation with respect to persona privacy for the Allergy Diary app - a MASK study

Background: Collecting data on the localization of users is a key issue for the MASK (Mobile Airways Sentinel network: the Allergy Diary) App. Data anonymization is a method of sanitization for privacy. The European Commission's Article 29 Working Party stated that geolocation information is personal data. To assess geolocation using the MASK method and to compare two anonymization methods in the MASK database to find an optimal privacy method. Methods: Geolocation was studied for all people who used the Allergy Diary App from December 2015 to November 2017 and who reported medical outcomes. Two different anonymization methods have been evaluated: Noise addition (randomization) and k-anonymity (generalization). Results: Ninety-three thousand one hundred and sixteen days of VAS were collected from 8535 users and 54,500 (58. 5%) were geolocalized, corresponding to 5428 users. Noise addition was found to be less accurate than k-anonymity using MASK data to protect the users' life privacy. Discussion: k-anonymity is an acceptable method for the anonymization of MASK data and results can be used for other databases.Peer reviewe

Anales del III Congreso Internacional de Vivienda y Ciudad "Debate en torno a la nueva agenda urbana"

Acta de congresoEl III Congreso Internacional de Vivienda y Ciudad “Debates en torno a la NUEVa Agenda Urbana”, ha sido una apuesta de alto compromiso por acercar los debates centrales y urgentes que tensionan el pleno ejercicio del derecho a la ciudad. Para ello las instituciones organizadoras (INVIHAB –Instituto de Investigación de Vivienda y Hábitat y MGyDH-Maestría en Gestión y Desarrollo Habitacional-1), hemos convidado un espacio que se concretó con potencia en un debate transdisciplinario. Convocó a intelectuales de prestigio internacional, investigadores, académicos y gestores estatales, y en una metodología de innovación articuló las voces académicas con las de las organizaciones sociales y/o barriales en el Foro de las Organizaciones Sociales que tuvo su espacio propio para dar voz a quienes están trabajando en los desafíos para garantizar los derechos a la vivienda y los bienes urbanos en nuestras ciudades del Siglo XXI

Entrenamiento profesional en mercadotecnia en la agencia Connect Ideas en el Área Creativa

A través del desarrollo de este PAP de Entrenamiento Profesional en Mercadotecnia con el tiempo, se pretende la capacitación y aplicación de conocimientos profesionales y colaborar en la empresa Connect Ideas para ayudarle a identificar necesidades – insatisfechas - del mercado que representen una oportunidad potencial para la organización, analizar y determinar variables relevantes que agregan valor a la oferta de la empresa, recomendar acciones concretas a la empresa y sus tomadores de decisiones que ayuden a fortalecer la posición competitiva de la organización, desarrollar y Diseñar mensajes de comunicación con responsabilidad, que motiven un consumo sustentable de bienes, conocer y aplicar modelos de gestión y administración de marcas.ITESO, A.C

Manuel Pérez Treviño, militar y gobernador de Coahuila, retrato.

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