Relative pose determination algorithm for space on-orbit close range autonomous operation using LiDAR

Non cooperative on-orbit operations, such as rendezvous, docking or berthing operations, have become more relevant, mainly due to the necessity of expanding mission lifetimes, the increase of space debris and the reduction of human dependency. In order to automate these operations, the relative pose calculation between the target and the chaser must be determined autonomously. In recent years, LiDAR sensors have been introduced for this problem, achieving good accuracies. The critical part of this operation is the first relative pose calculation, since there is no previous information about the attitude of the target. In this work, a methodology to carry out this first relative pose calculation using LiDAR sensors is presented. A template matching algorithm has been developed, which uses the 3D model of the target to calculate the relative pose of the target regarding the LiDAR sensor. Three different study cases, with different distances and rotations, have been simulated in order to validate the algorithm, reaching an average error of 0.0383m

A benchmarking of commercial small fixed-wing electric UAVs and RGB cameras for photogrammetry monitoring in intertidal multi-regions

Small fixed-wing electric Unmanned Aerial Vehicles (UAVs) are perfect candidates to perform tasks in wide areas, such as photogrammetry, surveillance, monitoring, or search and rescue, among others. They are easy to transport and assemble, have much greater range and autonomy, and reach higher speeds than rotatory-wing UAVs. Aiming to contribute towards their future implementation, the objective of this article is to benchmark commercial, small, fixed-wing, electric UAVs and compatible RGB cameras to find the best combination for photogrammetry and data acquisition of mussel seeds and goose barnacles in a multi-region intertidal zone of the south coast of Galicia (NW of Spain). To compare all the options, a Coverage Path Planning (CPP) algorithm enhanced for fixed-wing UAVs to cover long areas with sharp corners was posed, followed by a Traveling Salesman Problem (TSP) to find the best route between regions. Results show that two options stand out from the rest: the Delair DT26 Open Payload with a PhaseOne iXM-100 camera (shortest path, minimum number of pictures and turns) and the Heliplane LRS 340 PRO with the Sony Alpha 7R IV sensor, finishing the task in the minimum time.Agencia Estatal de Investigación | Ref. PID2021-125060OB-I00Agencia Estatal de Investigación | Ref. TED2021-129756B-C31Ministerio de Universidades | Ref. FPU21/01176Universidade de Vig

Systemic sclerosis and microscopic polyangiitis after systemic exposure to silicone

Glomerulonefritis creixent; Implants mamaris de silici; Esclerosi sistèmicaCrescentic glomerulonephritis; Silicon breast implants; Systemic sclerosisGlomerulonefritis creciente; Implantes mamarios de silicio; Esclerosis sistémicaThe relationship between silicon breast implants (SBIs) and autoimmune/inflammatory syndrome induced by adjuvants (ASIA) has been extensively analysed, with discordant results. We present a 45-year-old woman with confirmed systemic exposure to SBI who developed systemic sclerosis (SSc) followed by anti-neutrophil cytoplasmic antibody anti-myeloperoxidase vasculitis with renopulmonary syndrome. The novelty of our case is, first, confirmation of systemic exposure to SBI and, second, chronologic development of not one, but two severe autoimmune diseases. Controversy may still remain regarding SBIs and ASIA because it is unclear that previous studies confirmed systemic exposure to silicon in their cohort of patients.Grant number: PI18/00356 - Instituto de Salud Carlos III - FEDER "Una manera de hacer Europa" - CERCA Programme/Generalitat de Catalunya - IRBLleida - Fundació Dr. Pifarr

Proteomic Characterization of Antibiotic Resistance, and Production of Antimicrobial and Virulence Factors in Streptococcus Species Associated with Bovine Mastitis. Could Enzybiotics Represent Novel Therapeutic Agents Against These Pathogens?

Streptococcus spp. are major mastitis pathogens present in dairy products, which produce a variety of virulence factors that are involved in streptococcal pathogenicity. These include neuraminidase, pyrogenic exotoxin, and M protein, and in addition they might produce bacteriocins and antibiotic-resistance proteins. Unjustifiable misuse of antimicrobials has led to an increase in antibiotic-resistant bacteria present in foodstuffs. Identification of the mastitis-causing bacterial strain, as well as determining its antibiotic resistance and sensitivity is crucial for effective therapy. The present work focused on the LC–ESI–MS/MS (liquid chromatography–electrospray ionization tandem mass spectrometry) analysis of tryptic digestion peptides from mastitis-causing Streptococcus spp. isolated from milk. A total of 2706 non-redundant peptides belonging to 2510 proteins was identified and analyzed. Among them, 168 peptides were determined, representing proteins that act as virulence factors, toxins, anti-toxins, provide resistance to antibiotics that are associated with the production of lantibiotic-related compounds, or play a role in the resistance to toxic substances. Protein comparisons with the NCBI database allowed the identification of 134 peptides as specific to Streptococcus spp., while two peptides (EATGNQNISPNLTISNAQLNLEDKNK and DLWC*NM*IIAAK) were found to be species-specific to Streptococcus dysgalactiae. This proteomic repository might be useful for further studies and research work, as well as for the development of new therapeutics for the mastitis-causing Streptococcus strainsThis work was supported by the Xunta de Galicia; the European Union Social Fund (ESF); the Spanish Ministry of Economy and Competitiveness (Project AGL 2.013-48.244-R); and by the European Regional Development Fund (ERDF) (2007-2013)S

Reconstrucción de imágenes sísmicas virtuales con técnicas de interferometría en datos de símica pasiva

This paper aims to obtain compressional body waves (seismic sections) to delimit geological structures associated with hydrocarbon reservoirs. We used a passive seismic dataset from a rectangular array located at northeast of Mexico. Seismic Interferometry (IS) method, which allows extracting the Green’s function by using cross-correlations (CC(t)) of seismic traces was applied. We processed six lines of approximately 8 km length, with 159 geophones each. The obtained CC(t) (also called virtual shots pseudo-sections) were processed with the algorithms that generally are used in the seismic exploration industry to extract the structural and sub-surface velocity information. We regrouped the results of the pseudo-sections of virtual shots by common offset gathers (COG) to generate subsurface images in terms of a zero-offset seismic section. Although, alternative processing algorithms were performed, which consists in applying the wavelet transform method to decompose and reconstruct the CC(t) by means of the Meyer wavelet, improving the quality of the CC(t). Subsequently, new seismic sections were generated considering a common offset. We use offsets of 100, 500, 900, 1300, 1700, and 2100 m among source-receiver virtual arrays. In this case, results were improved substantially, clearly showing the expected reflectors. We observed that the depth of investigation increases for higher offsets, meanwhile the surface resolution decreases. The sections were stacked with the different offsets mentioned above for each line, resulting in a total common offset section. Finally, the obtained sections were compared versus a conventional seismic section (also called “active” seismic sections) migrated in depth

Relationship between patients with alcoholic intoxication due to alcoholic drinks and the presence of hypoglycemia

Introduction: Alcoholic intoxication is a frequent cause of patient’s medical care in recreation and enjoyment areas. Numerous are complications associated to this clinic syndrome, being described among them the hypoglycemia, intending in their treatment a customary use of glucose solutions. Objective: To determine the hypoglycemia incidence in patient with intoxication by alcoholic drinks in a recreational area "East Beach" touristic area. Material and Methods: A descriptive study was performed in patients hospitalized in an emergency service due to alcoholic intoxication and to who was carried out a capillary glycaemia analysis to reveal the presence of hypoglycemia. 59 patients with alcoholic poisoning were included in the study, without significant differences of gender, being young people and adolescents most of cases. Results: Most frequent symptoms were a level of conscience deterioration, predominating in the 62,7 % a Glasgow Coma Scale ≤ 9. 66,2 % did not ingest food before their admission. Vomiting and the dehydration was present in 62,7 and 69,4 respectively of the hospitalized patients. The transfer was necessary in 15,2 % to other hospitals to continue the studies and care. Only hypoglycemia was found in four cases for a 6,7 %, prevailing in patients older than 40 years. Conclusions: The hypoglycemia can be present in the alcoholic poisoning, being very little probable in young people and adolescents, it is related mainly to scarce food ingestion.Keywords: Poisoning, Alcoholic Drinks, Emergency Services, Hypoglycemia, Hypertonic Glucose, signs, symptoms.</p

Entorno de aprendizaje ubicuo con realidad aumentada y tabletas para estimular la comprensión del espacio tridimensional

In this paper; two digital alternatives are analyzed against use of tangible models (physical parts) for sketching and analyzing forms: these are augmented reality and digital tablets. For this purpose; three pilot tests have been performed during the academic year 2011- 2012; where 62 students took part in it. These students came from three different educational setting: Arts Degree at La Laguna University; IES La Laboral high school and a group of Art and Technology subject’s high school teachers. The study has been performed with six tangible models of painted aluminum. The digital versions of these digital models have been created on a digital tablet and augmented reality over a PC. An overall evaluation and specific evaluation over the technology used has been performed too. From the results of this study; we have concluded that both technologies are valid alternatives for the substitution of tangible models in digital environments.En este artículo se analiza la adopción de alternativas digitales a modelos físicos mediante las tecnologías de realidad aumentada y las tabletas multitáctiles. El objetivo es ofrecer un entorno de aprendizaje ubicuo para estimular la comprensión del espacio tridimensional. Para ello se han realizado tres pruebas piloto durante el curso académico 2011-2012, en las que participaron 62 estudiantes de tres ámbitos educativos diferentes de la isla de Tenerife: Grado en Bellas Artes de la Universidad de La Laguna, estudiantes de educación secundaria del IES La Laboral y un grupo de profesores de secundaria de las asignaturas de Arte y Tecnología. El estudio se ha realizado con seis modelos físicos de aluminio pintado. Se ha dispuesto de la versión digital de seis modelos en Realidad Aumentada y en tableta multitáctil. Se ha realizado una valoración global y una valoración específica sobre las tecnologías utilizadas. De los resultados de este estudio se obtiene que ambas tecnologías son alternativas válidas para la sustitución de los modelos físicos en entornos digitales

3D Modeling as an educational tool for the development ofskills of the new degrees in Arts

[ES] En este artículo se describe un estudio piloto consistente en la realización de un taller de modelado 3D como herramienta de innovación educativa para el desarrollo de competencias contempladas en los nuevos grados de Bellas Artes. Entre ellas, el Espacio Europeo de Educación Superior, propone la competencia de elegir el sistema de representación adecuado, la utilización de herramientas tecnológicas avanzadas y el desarrollo de la capacidad de visión espacial. El estudio ha sido realizado con estudiantes de Grado en Bellas rutes de la Universidad de La Laguna durante el curso académico 2010-20 11. El software elegido para el taller ha sido Google Sketchup 8, en su versión gratuita. Para medir la influencia que ha tenido la realización del mismo los alumnos rellenaron una encuesta de satisfacción sobre el taller, y se les midió el efecto sobre la visión espacial mediante el Mental Rotation Test (MRT). Los resultados indican que este tipo de iniciativas permiten mejorar las competencias de los estudiantes.[EN] This article describes a pilot study involving the realization of a 3D modelling workshop as an innovative educational tool for development skills contemplated by the new degrees in Arts. The new European Higher Education Area includes the development of abilities, such us the capacity to choose the appropriate representation system, using advanced technological tools and developing the capacity for spatial vision. The study was conducted with students in Arts Degree from the University of La Laguna during the academic year 2010-2011. The software chosen for the workshop has been Google Sketchup 8, free version. To measure the results of the pilot study, students completed a survey of effectiveness, efficiency and satisfaction on the Workshop, and it was measured the effect of spatial vision using the Mental Rotation Test (MRT). The results show that this kind of initiatives allow to improve the skills of students.Torre Cantero, JLDL.; Saorín Pérez, JL.; Carbonell Carrera, C.; Castillo Cossío, MDD.; Contero González, MR. (2012). Modelado 3D como herramienta educacional para el desarrollo de competencias de los nuevos grados de Bellas Artes. Arte, Individuo y Sociedad. 24(2):179-193. doi:10.5209/rev_ARIS.2012.v24.n2.39025S17919324

La figura del defensor del menor en la Comunidad de Madrid: un análisis intergubernamental y comparado

Esta publicación da cuenta de una investigación, financiada por el Defensor del Menor de la Comunidad de Madrid (Asamblea de la Comunidad de Madrid) en que, de manera pionera, se aplica la metodología de análisis intergubernamental en España a una institución pública. También se aplica el análisis comparativo. La investigación contó con la participación en el trabajo de campo de decenas de organizaciones e instituciones públicas españolas y extranjeras. El estudio se desenvuelve en ocho capítulos, sin contar las conclusiones y las fuentes y anexos. En los primeros se realiza una aproximación a la metodología intergubernamental como marco de comprensión del conjunto de trabajo, se tratan los asuntos normativos y se analizan las redes de actores de que forma parte del Defensor del Menor, mostrando el lugar central que ocupa en varias de ellas. El capítulo VI profundiza en la legitimidad y realiza una operativización cualitativa de la misma a partir de la clásica distinción entre legitimidad institucional y por rendimientos, esquema que se confronta con las actuaciones del Defensor. El capítulo VII se plantea en qué medida el Defensor del Menor puede considerarse una organización moderna, en tanto que el VIII se centra en el análisis comparativo de esta figura con otras organizaciones defensoras de los derechos de la infancia tanto a nivel nacional como internacional

The Fourteenth Data Release of the Sloan Digital Sky Survey: First Spectroscopic Data from the extended Baryon Oscillation Spectroscopic Survey and from the second phase of the Apache Point Observatory Galactic Evolution Experiment

The fourth generation of the Sloan Digital Sky Survey (SDSS-IV) has been in operation since July 2014. This paper describes the second data release from this phase, and the fourteenth from SDSS overall (making this, Data Release Fourteen or DR14). This release makes public data taken by SDSS-IV in its first two years of operation (July 2014-2016). Like all previous SDSS releases, DR14 is cumulative, including the most recent reductions and calibrations of all data taken by SDSS since the first phase began operations in 2000. New in DR14 is the first public release of data from the extended Baryon Oscillation Spectroscopic Survey (eBOSS); the first data from the second phase of the Apache Point Observatory (APO) Galactic Evolution Experiment (APOGEE-2), including stellar parameter estimates from an innovative data driven machine learning algorithm known as "The Cannon"; and almost twice as many data cubes from the Mapping Nearby Galaxies at APO (MaNGA) survey as were in the previous release (N = 2812 in total). This paper describes the location and format of the publicly available data from SDSS-IV surveys. We provide references to the important technical papers describing how these data have been taken (both targeting and observation details) and processed for scientific use. The SDSS website (www.sdss.org) has been updated for this release, and provides links to data downloads, as well as tutorials and examples of data use. SDSS-IV is planning to continue to collect astronomical data until 2020, and will be followed by SDSS-V.Comment: SDSS-IV collaboration alphabetical author data release paper. DR14 happened on 31st July 2017. 19 pages, 5 figures. Accepted by ApJS on 28th Nov 2017 (this is the "post-print" and "post-proofs" version; minor corrections only from v1, and most of errors found in proofs corrected