Book review: Gender and Sexuality in Muslim Cultures

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Combining visual features and Growing Neural Gas networks for robotic 3D SLAM

The use of 3D data in mobile robotics provides valuable information about the robot’s environment. Traditionally, stereo cameras have been used as a low-cost 3D sensor. However, the lack of precision and texture for some surfaces suggests that the use of other 3D sensors could be more suitable. In this work, we examine the use of two sensors: an infrared SR4000 and a Kinect camera. We use a combination of 3D data obtained by these cameras, along with features obtained from 2D images acquired from these cameras, using a Growing Neural Gas (GNG) network applied to the 3D data. The goal is to obtain a robust egomotion technique. The GNG network is used to reduce the camera error. To calculate the egomotion, we test two methods for 3D registration. One is based on an iterative closest points algorithm, and the other employs random sample consensus. Finally, a simultaneous localization and mapping method is applied to the complete sequence to reduce the global error. The error from each sensor and the mapping results from the proposed method are examined.This work has been supported by Grant DPI2009-07144 and DPI2013-40534-R from Ministerio de Ciencia e Innovacion of the Spanish Government, University of Alicante Projects GRE09-16 and GRE10-35, and Valencian Government Project GV/2011/034

Conformational analysis of a TADDOL-based phosphoramidite P,N ligand in a palladium(II) η3-π-allyl complex

Highlights Two lowest energy conformers differ in allyl conformation, conformer with exo allyl having lower energy. Lowest energy conformer has “chair” conformation of 7-membered ring and “edge-on/face-on/face-on/edge-on” array of pH groups. Next lowest energy conformer with exo allyl has alternating “edge-on/face-on” arrangement and “twist” 7-membered ring. Changes in “chair/twist” conformations with different substrates is possible due to 2.4 kcal/mol energy difference. These results explain stereochemical outcome of the reaction, and will guide design of new catalysts. Abstract The most stable conformations of a TADDOL-based phosphoramidite P,N ligand coordinated to a palladium(II) η3-π-allyl fragment have been investigated using molecular mechanical and quantum mechanical calculations. The conformational analysis initially generated 53 unique structures within 5 kcal/mol and subsequent geometry optimization narrowed the number of low-energy conformers down to 13. The two lowest energy conformers differ mainly in the conformation of the allyl group. The conformer with an endo allyl group has a slightly higher relative energy than the conformer with an exo allyl group. Comparison of the main geometric parameters around the Pd(II) metal center in the two lowest energy conformers with the available X-ray single crystal structures of Pd(II) η3-π-allyl complexes of P,N ligands shows a good agreement in both the bond lengths and angles. The lowest energy structure has a “chair” conformation of the seven-membered phospha-dioxa-cycloheptane ring and “edge-on/face-on/face-on/edge-on” arrangement of the phenyl rings. The next lowest energy conformer with an exo allyl group has a “twist” conformation of the seven-membered ring and alternating “edge-on” and “face-on” arrangement of the phenyl rings as anticipated from the Knowles “edge-on/face-on” concept. The results of this study support published hypotheses regarding the origin of the chiral induction in the enantioselective Pd(0) catalyzed intramolecular allylic alkylation reaction by the repulsive interactions between one of the phenyl groups in the seven-membered ring in the lowest energy conformer of the ligand with the substrate. As such, the results of this research can be used to guide the synthesis of new and improved variants of this important catalyst family

Somatic SNCA Copy Number Variants in Multiple System Atrophy Are Related to Pathology and Inclusions

BACKGROUND: Somatic α-synuclein (SNCA) copy number variants (CNVs, specifically gains) occur in multiple system atrophy (MSA) and Parkinson's disease brains. OBJECTIVE: The aim was to compare somatic SNCA CNVs in MSA subtypes (striatonigral degeneration [SND] and olivopontocerebellar atrophy [OPCA]) and correlate with inclusions. METHODS: We combined fluorescent in situ hybridization with immunofluorescence for α-synuclein and in some cases oligodendrocyte marker tubulin polymerization promoting protein (TPPP). RESULTS: We analyzed one to three brain regions from 24 MSA cases (13 SND, 11 OPCA). In a region preferentially affected in one subtype (putamen in SND, cerebellum in OPCA), mosaicism was higher in that subtype, and cells with CNVs were 4.2 times more likely to have inclusions. In the substantia nigra, nonpigmented cells with CNVs and TPPP were about six times more likely to have inclusions. CONCLUSIONS: The correlation between SNCA CNVs and pathology (at a regional level) and inclusions (at a single-cell level) suggests a role for somatic SNCA CNVs in MSA pathogenesis. © 2022 The Authors. Movement Disorders published by Wiley Periodicals LLC on behalf of International Parkinson and Movement Disorder Society

How do galaxies populate haloes in high-density environments? An analysis of the Halo Occupation Distribution in future virialized structures

There are hints suggesting that properties of galaxy populations in dark matter haloes may depend on their large-scale environment. Recent works point out that very low-density environments influence halo occupation distribution (HOD), however there is not a similar analysis focused on high-density environments. Here we use a simulated set of future virialized superstructures (FVS) to analyse the occupation of galaxies in haloes within these high globally dense regions. We use a publicly available simulated galaxy set constructed with a semi-analytical model to identify FVS in the simulation. Then, we computed the HOD within these superstructures for different absolute magnitude thresholds and make several analysis including the comparison to the global HOD results. We study the dependence on the results on properties of the FVS such as density and volume as well as consider the morphology of galaxies. We also analysed the properties of the stellar content of galaxies and the formation time of the haloes inside FVS. We find a significant increase in the HOD inside FVS. This result is present for all absolute magnitude thresholds explored. The effect is larger in the densest regions of FVS, but does not depend on the volume of the superstructure. We also find that the stellar-mass content of galaxies considerably differs inside the superstructures. Low mass haloes have their central and satellite galaxies with a higher stellar mass content (50%), and exhibit mean star ages (20%) older than average. For massive haloes in FVS we find that only the stellar mass of satellite galaxies varies considerably corresponding to a decrease of 50%. We find a significant statistical difference between the formation times of haloes in FVS and the average population. Haloes residing in superstructures formed earlier, a fact that leads to several changes in the HOD and their member galaxy properties.Comment: 12 pages, 14 figures, the paper has been accepted to be published by the A&

Water Partnership Program Annual Report 2011: "Strengthen, Secure, Sustain"

This annual report outlines the World Bank's Water Partnership Program's activities and progress in its key focus areas of water resources management, climate change, food security, and energy security. The program is a multi-donor trust that was established in 2009 and is transitioning, as of June 2012, into a bolder Phase II of its operations. In addition to investing in research, technology and practice, the program is building partnerships, networks, and capacity, and working towards its new objective of green growth

How galaxies populate halos in extreme density environments: An analysis of the halo occupation distribution in SDSS

Context. Recent works have shown that the properties of galaxy populations in simulated dark matter halos vary with large-scale environments. These results suggest a variation in the halo occupation distribution (HOD) in extreme density environments since the dynamical and astrophysical conditions prevailing in these regions may significantly affect the formation and evolution of their halos and residing galaxies, influencing the mean number of satellite galaxies. To analyze these effects, we identify cosmic voids and future virialized structures (FVSs) in the Sloan Digital Sky Server Data Release 12 (SDSS-DR12) and estimate the HOD within these super-structures using group catalogs as dark matter halo proxies. Aims. Our goal is to use observational galaxy data to characterize the HOD within cosmic voids and FVSs, explore the different properties of these galaxiesa'populations, and compare them with the general results outside of these super-structures. Methods. We used a publicly available observational galaxy catalog with information on redshifts, positions, magnitudes, and other astrophysical features to build a volume complete galaxy sample and identify cosmic voids and FVSs. Using a publicly available galaxy group catalog as a proxy to dark matter halos, we computed the HOD within both types of super-structures for different absolute magnitude thresholds. We also studied the dependence of the results on the main void and FVS properties, density, and volume. We also analyzed the main characteristics of the stellar content of galaxies inside these extreme-density regions such as the mean stellar age and the stellar mass. In all cases, we compared the results with those derived from the field sample, defined by objects outside of both types of environments. Results. Inside cosmic voids, we find a strong decrease in the HOD concerning the field results. In the most extreme cases, that is to say groups with masses above ã1013h-1M, the mean number of satellites fall to ã50%. Inside FVSs, the HOD shows a significant increase to the field, with a ã40% excess in the mean number of satellites for groups with masses around 1014h-1M. These results are present for the different galaxy luminosity ranges explored. In both environments, the differences with respect to the field increases for the extreme values of the density environments. However, we obtain no signs of variations related to intrinsic characteristics of the super-structures, indicating that the effects mainly depend on the density of the large-scale environment. In addition, we find that the cumulative distribution of the mean age of stars of the central galaxy also varies in the different regions; this suggests that the history of the formation of the dark matter halos may be different. Finally, we explore the HOD for the 25% youngest (oldest) galaxies, based on the mean age of their stars. We find that for the low-mass groups the youngest galaxies are only present inside voids, and they are generally central galaxies. On the other hand, for the high-mass groups, the FVS environments show the same increase in the HOD concerning the field as previously mentioned. We find that cosmic voids lack a significant fraction of galaxies with the oldest stellar population.Fil: Alfaro, Ignacio Germán. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; ArgentinaFil: Rodriguez, Facundo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; Argentina. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; ArgentinaFil: Ruiz, Andrés Nicolás. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; Argentina. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; ArgentinaFil: Luparello, Heliana Estefanía. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; ArgentinaFil: Garcia Lambas, Diego Rodolfo. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; Argentin

Anomaly detection and virtual reality visualisation in supercomputers

Anomaly detection is the identification of events or observations that deviate from the expected behaviour of a given set of data. Its main application is the prediction of possible technical failures. In particular, anomaly detection on supercomputers is a difficult problem to solve due to the large scale of the systems and the large number of components. Most research works in this field employ machine learning methods and regression models in a supervised fashion, which implies the need for a large amount of labelled data to train such systems. This work proposes the use of autoencoder models, allowing the problem to be approached with semi-supervised learning techniques. Two different model training approaches are compared. The former is a model trained with data from all the nodes of a supercomputer. In the latter approach, observing significant differences between nodes, one model is trained for each node. The results are analysed by evaluating the positive and negative aspects of each approach. On the other hand, a replica of the Marconi 100 supercomputer is developed in a virtual reality environment that allows the data from each node to be visualised at the same time.Open Access funding provided thanks to the CRUE-CSIC agreement with Springer Nature. We would like to thank “A way of making Europe” European Regional Development Fund (ERDF) and MCIN/AEI/10.13039/501100011033 for supporting this work under the MoDeaAS project (grant PID2019-104818RB-I00). Furthermore, we would like to thank the University of Skövde and to ASSAR Innovation Arena for their support to develop this work

Diseñar una de mesa de ayuda para atender a los clientes internos y externos, en Kompreo Colombia sas, basado en la metodología itil v3 e iso/iec 20000:2011, Bogotá

Actualmente prestar servicios de calidad en tiempos óptimos para los clientes internos y externos es de gran importancia para las organizaciones. La utilización de una Mesa de ayuda o help desk facilita la gestión y cumplimiento de estos procesos reduciendo los tiempos de atención y los riesgos. KOMPREO COLOMBIA SAS al ser una empresa prestadora de servicios de venta, arrendamientos de equipo y soporte en servicios de TI necesita un sistema que garantice y optimice la prestación de estos servicios a sus clientes con el ánimo de identificar, manejar y hacer seguimiento a los casos previniendo incidentes futuros que en el caso de que ocurran se tenga una repuesta de acción rápida mediante la documentación que se lleva. En este documento se observa la importancia de contar con una mesa de ayuda de ayuda en KOMPREO COLOMBIA SAS y en cualquier organización para optimizar y garantizar la entrega de servicios y con una excelente calidad, mediante el marco de referencia de ITIL con sus 5 fases, enfocado en la estrategia y diseño del servicio junto con sus procesos y cumpliendo con los requerimientos de la norma ISO 20000-1, propone para estos.  Currently providing quality services at optimal times for internal and external customers is of great importance to organizations. The use of a help desk or help desk facilitates the management and compliance of these processes, reducing attention times and risks. KOMPREO COLOMBIA SAS, being a provider of sales services, leasing of equipment and support in IT services, needs a system that guarantees and optimizes the provision of these services to its clients with the aim of identifying, managing and following up cases. preventing future incidents that, in the event that they occur, have a quick action response through the documentation that is carried. This document shows the importance of having a support help desk in KOMPREO COLOMBIA SAS and in any organization to optimize and guarantee the delivery of services and with an excellent quality, through the framework of ITIL with its 5 phases, Focused on the strategy and design of the service together with its processes and complying with the requirements of the ISO 20000-1 standard, it proposes for these.CONTENIDO. -- Glosario. -- Introducción. -- 1.Descripción del problema. -- 1.1Planteamiento Del Problema. -- 1.2.1 Objetivo General. -- 1.2.2 Objetivos específicos. -- 2.Marcos de referencia. -- 2.1 Marco teórico. -- 2.1.2 Itil version 3. -- 2.1.3 Mesa de ayuda. -- 2.2 Marco institucional. -- 2.2.1 Plataforma estratégica de la empresa kompreo colombia sas. -- 2.2.2 Política y principios de kompreo colombia sas. -- 2.2.3 Línea de servicios o productos. -- 3.Metodología. -- 3.1 Población. -- 3.2 Técnicas de recolección y análisis de observación. -- 3.4 Técnicas y métodos para el diseño de la mesa de ayuda. -- 4.Diagnóstico de las condiciones actuales de kompreo colombia sas. -- 4.1 Estado de las condiciones de la empresa kompreo colombia sas.--4.1.1Descripción de la organización: kompreo colombia sas. --4.1.2Estructura organizacional.--4.1.3Servicios y productos.-- 4.2 Determinación de factores críticos.-- 4.3Identificación de hallazgos significativos.-- 5.Diseñar una de mesa de ayuda para atender a los clientes internos y externos, en kompreo colombia sas, basado en la metodología itil v3 e iso/iec 20000:2011, bogota.-- 5.1Estrategia del servicio.-- 5.1.1Gestión de la estrategia.-- 5.1.2Gestión de portafolio.-- 5.2Diseño del servicio.-- 5.2.1 Gestión de niveles de servicio.-- 5.2.2Gestión del catálogo de servicios.-- 5.2.3Gestión de la disponibilidad 5.2.4Gestión de la capacidad.-- 5.2.5Gestión de la continuidad del servicio ti.-- 5.3Plan de mejora.-- 5.4Propuesta económica.-- 6Conclusiones.-- 7Recomendaciones.-- Bibliografí

La percepción del profesorado de Educación Primaria y Educación Secundaria sobre las variables que influyen en el Abandono Escolar Temprano

Early School Leaving is a problem that worries countries around the world. This is because it directly affects both the lives of students who abandon and society in general. The objective of the present study is to know the perception that Primary Education, Compulsory Secondary Education and Upper Secondary Education teachers have on the most influential variables that affect Early School Leaving. The research carried out follows a survey methodology, by administering a questionnaire with 85 variables identified in the scientific literature. 134 responses were obtained from teachers throughout Spain. The results indicate that the variables considered more related to Early School Leaving are those related to individual and family characteristics. To a lesser extent, the school activity of the individual as a student, the attitude of the faculty, the behaviour of the classmates and the characteristics of the school are considered related. We conclude that we are facing a phenomenon of complex causes that should not be approached exclusively from an academic perspective but multidisciplinary.El Abandono Escolar Temprano es un problema que preocupa a los países de todo el mundo. Esto se debe a que afecta directamente tanto a la vida de los estudiantes que abandonan como a la sociedad en general. El objetivo del presente estudio es conocer la percepción que tienen los docentes de las etapas de Educación Primaria, Educación Secundaria Obligatoria y Bachillerato sobre las variables más influyentes en el Abandono Escolar Temprano. La investigación llevada a cabo sigue una metodología de encuesta, mediante la administración de un cuestionario con 85 variables identificadas en la literatura científica. Se obtuvieron 134 respuestas de docentes de toda España. Los resultados indican que las variables consideradas más relacionadas con el Abandono Escolar Temprano son las vinculadas a características individuales y familiares. En menor medida, se consideran relacionadas la actividad escolar del individuo como estudiante, la actitud del profesorado, el comportamiento de los compañeros de clase y las características del centro. Se concluye que estamos ante un fenómeno de causas complejas que no debe ser abordado exclusivamente desde una perspectiva académica sino multidisciplinar