Service-oriented agent architecture for autonomous maritime vehicles

Advanced ocean systems are increasing their capabilities and the degree of autonomy more and more in order to perform more sophisticated maritime missions. Remotely operated vehicles are no longer cost-effective since they are limited by economic support costs, and the presence and skills of the human operator. Alternatively, autonomous surface and underwater vehicles have the potential to operate with greatly reduced overhead costs and level of operator intervention. This Thesis proposes an Intelligent Control Architecture (ICA) to enable multiple collaborating marine vehicles to autonomously carry out underwater intervention missions. The ICA is generic in nature but aimed at a case study where a marine surface craft and an underwater vehicle are required to work cooperatively. They are capable of cooperating autonomously towards the execution of complex activities since they have different but complementary capabilities. The architectural foundation to achieve the ICA lays on the flexibility of service-oriented computing and agent technology. An ontological database captures the operator skills, platform capabilities and, changes in the environment. The information captured, stored as knowledge, enables reasoning agents to plan missions based on the current situation. The ICA implementation is verified in simulation, and validated in trials by means of a team of autonomous marine robots. This Thesis also presents architectural details and evaluation scenarios of the ICA, results of simulations and trials from different maritime operations, and future research directions

Apiarian flora in Colonia Laharrague, Misiones, Argentina

El presente trabajo tiene como objetivo identificar las especies vegetales de la flora aledaña a un apiario utilizadas por las abejas, mediante observaciones a campo. El apiario se halla ubicado en Colonia Laharrague, Departamento de Montecarlo al noroeste de la Provincia de Misiones. Se registró el período de floración de 86 especies correspondiente a 37 familias. Estas especies fueron clasificadas según la frecuencia de visitas de las abejas a las flores. Las familias con mayor representación en la oferta de floración entomófila corresponden a las Fabaceae, Asteraceae, Rutaceae entre otras. La máxima oferta para el periodo 2005-2006 se registró en verano y está dada por especies nativas arbóreas o arbustivas. Las especies con mayor predilección entomófila corresponden a las especies nativas.Fil: Miranda, Dora. Universidad Nacional de Misiones. Facultad de Ciencias Forestales; ArgentinaFil: Keller, Hector Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Nordeste. Instituto de Botánica del Nordeste (i); Argentina. Universidad Nacional de Misiones. Facultad de Ciencias Forestales; ArgentinaFil: Silva, Fidelina. Universidad Nacional de Misiones. Facultad de Ciencias Forestales; ArgentinaFil: Insaurralde, Carlos. Universidad Nacional de Misiones. Facultad de Ciencias Forestales; Argentin

Bosques políticos: un estudio de la historia ambiental de Salta Forestal S. A. en el período 1974-2017 desde el enfoque de la ecología política

La empresa pública Salta Forestal S.A. fue creada en el año 1974 en el departamento Anta de la provincia de Salta. Mediante un aprovechamiento “integral” y “racional” de los bosques, se pretendía suministrar carbón, durmientes y postes a empresas del Estado. Este trabajo examina desde el enfoque de la ecología política la historia ambiental de la empresa en el periodo 1974-2017. Se analizaron documentos escritos, entrevistas a actores sociales relevantes y mapas satelitales poniendo el foco en las relaciones de poder que operaron en la interfaz sociedad-naturaleza. El análisis muestra que Salta Forestal, basada en una ideología eco-modernizadora y en un discurso de desarrollo sustentable, transformó su territorio en un ‘bosque político’ caracterizado por conflictos socioambientales y una profundización de la degradación ambiental. Se concluye que los resultados negativos de la empresa en términos socio-ambientales estaban inscritos en la lógica de las ideas que justificaron su creación.The public firm Salta Forestal S.A. was created in 1974 in the department Anta of the province of Salta. Through an “integral” and “rational” exploitation of the forest, the aim of the enterprise was to supply charcoal and wooden poles demanded by state enterprises. This work examines from the standpoint of political ecology the environmental history of the firm in the 1974-2017 period. Textual, oral and visual sources were analysed with a focus on the power relations that operated in the nature-society interface. The main result of this analysis is that Salta Forestal, based upon an eco-modernizing ideology and a sustainable development discourse, transformed his territory in a political forest characterized by socio-environmental conflicts and a deepening of environmental degradation. The conclusion is that the negative results of the firm in socio-environmental terms were already inscribed in the logic of the ideas that justified his creation.Asociación Argentina de Energías Renovables y Medio Ambiente (ASADES

Chromosome studies in Orchidaceae from Argentina

Abstract The center of diversity of Argentinean orchids is in the northeast region of the country. Chromosome numbers and karyotype features of 43 species belonging to 28 genera are presented here

Epidemiology, patterns of care, and mortality for patients with acute respiratory distress syndrome in intensive care units in 50 countries

IMPORTANCE: Limited information exists about the epidemiology, recognition, management, and outcomes of patients with the acute respiratory distress syndrome (ARDS). OBJECTIVES: To evaluate intensive care unit (ICU) incidence and outcome of ARDS and to assess clinician recognition, ventilation management, and use of adjuncts-for example prone positioning-in routine clinical practice for patients fulfilling the ARDS Berlin Definition. DESIGN, SETTING, AND PARTICIPANTS:The Large Observational Study to Understand the Global Impact of Severe Acute Respiratory Failure (LUNG SAFE) was an international, multicenter, prospective cohort study of patients undergoing invasive or noninvasive ventilation, conducted during 4 consecutive weeks in the winter of 2014 in a convenience sample of 459 ICUs from 50 countries across 5 continents. EXPOSURES:Acute respiratory distress syndrome. MAIN OUTCOMES AND MEASURES: The primary outcome was ICU incidence of ARDS. Secondary outcomes included assessment of clinician recognition of ARDS, the application of ventilatory management, the use of adjunctive interventions in routine clinical practice, and clinical outcomes from ARDS. RESULTS: Of 29,144 patients admitted to participating ICUs, 3022 (10.4%) fulfilled ARDS criteria. Of these, 2377 patients developed ARDS in the first 48 hours and whose respiratory failure was managed with invasive mechanical ventilation. The period prevalence of mild ARDS was 30.0% (95% CI, 28.2%-31.9%); of moderate ARDS, 46.6% (95% CI, 44.5%-48.6%); and of severe ARDS, 23.4% (95% CI, 21.7%-25.2%). ARDS represented 0.42 cases per ICU bed over 4 weeks and represented 10.4% (95% CI, 10.0%-10.7%) of ICU admissions and 23.4% of patients requiring mechanical ventilation. Clinical recognition of ARDS ranged from 51.3% (95% CI, 47.5%-55.0%) in mild to 78.5% (95% CI, 74.8%-81.8%) in severe ARDS. Less than two-thirds of patients with ARDS received a tidal volume 8 of mL/kg or less of predicted body weight. Plateau pressure was measured in 40.1% (95% CI, 38.2-42.1), whereas 82.6% (95% CI, 81.0%-84.1%) received a positive end-expository pressure (PEEP) of less than 12 cm H2O. Prone positioning was used in 16.3% (95% CI, 13.7%-19.2%) of patients with severe ARDS. Clinician recognition of ARDS was associated with higher PEEP, greater use of neuromuscular blockade, and prone positioning. Hospital mortality was 34.9% (95% CI, 31.4%-38.5%) for those with mild, 40.3% (95% CI, 37.4%-43.3%) for those with moderate, and 46.1% (95% CI, 41.9%-50.4%) for those with severe ARDS. CONCLUSIONS AND RELEVANCE: Among ICUs in 50 countries, the period prevalence of ARDS was 10.4% of ICU admissions. This syndrome appeared to be underrecognized and undertreated and associated with a high mortality rate. These findings indicate the potential for improvement in the management of patients with ARDS

Chromosome studies in Orchidaceae from Argentina

The center of diversity of Argentinean orchids is in the northeast region of the country. Chromosome numbers and karyotype features of 43 species belonging to 28 genera are presented here. Five chromosome records are the first ones at the genus level; these taxa are Aspidogyne kuckzinskii (2n = 42), Eurystyles actinosophila (2n = 56), Skeptrostachys paraguayensis (2n = 46), Stigmatosema polyaden (2n = 40) and Zygostates alleniana (2n = 54). In addition, a chromosome number is presented for the first time for 15 species: Corymborkis flava (2n = 56), Cyclopogon callophyllus (2n = 28), C. oliganthus (2n = 64), Cyrtopodium hatschbachii (2n = 46), C. palmifrons (2n = 46), Galeandra beyrichii (2n = 54), Habenaria bractescens (2n = 44), Oncidium edwallii (2n = 42), O. fimbriatum (2n = 56), O. pubes (2n = 84), O. riograndense (2n = 56), Pelexia ekmanii (2n = 46), P. lindmanii (2n = 46) and Warrea warreana (2n = 48). For Oncidium longicornu (2n = 42), O. divaricatum (2n = 56) and Sarcoglottis fasciculata (2n = 46+1B?, 46+3B?), a new cytotype was found. Chromosome data support phylogenetic relationships proposed by previous cytological, morphologic and molecular analyses, and in all the cases cover some gaps in the South American literature on orchid chromosomes

Association between urban/rural background and the development of depressive spectrum disorders: an experience from telepsychiatry

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Ansiedad en pandemia: características epidemiológicas de los trastornos de ansiedad atendidos a través de telepsiquiatría en un hospital universitario

RESUMEN Introducción: la pandemia de COVID-19 ha incrementado los casos de ansiedad y causado grandes modificaciones en la forma de prestar atención médica. Objetivo: describir las características epidemiológicas de los trastornos de ansiedad atendidos a través de telepsiquiatría en un Hospital Universitario. Metodología: estudio observacional, descriptivo, de corte transversal. Se realizó un muestreo no aleatorio intencional. Se utilizaron fichas electrónicas de pacientes tratados en el Servicio de Psiquiatría del Hospital de Clínicas, Paraguay, entre febrero y mayo de 2021. Se realizó estadística descriptiva de todas las variables. Se calcularon medidas de tendencia central y dispersión para las variables cuantitativas. Las cualitativas se resumieron en frecuencias y porcentajes. Resultados: el análisis incluyó 804 pacientes. El 71,5 % (575) de los pacientes procedían del ámbito rural. De todos los pacientes con diagnóstico de algún trastorno de ansiedad (20,49 % n = 165), el 69,1 % (114) correspondían a mujeres y el 49,7 % (82) presentaron trastorno de pánico (ansiedad paroxística episódica), 28,5 % (47) fueron diagnosticados con trastorno de ansiedad generalizada, y 21,8 % (36) tuvieron un trastorno de ansiedad no especificado. Conclusión: más del 20 % de los pacientes que consultaron a través de la modalidad de telepsiquiatría presentó algún cuadro del espectro ansioso. La presentación de casos se dio tanto en el ámbito rural como en el urbano y de preferencia en mujeres. El trastorno de pánico emergió como el trastorno de más alta frecuencia en la población accesible, representando casi la mitad de todos los casos de ansiedad diagnosticados. ABSTRACT Introduction: the COVID-19 pandemic has increased anxiety cases and caused big modifications in the way medical care is provided. Objective: to describe the epidemiological characteristics of anxiety disorders treated through telepsychiatry in a University Hospital. Methodology: observational, descriptive, cross-sectional study. A non-random purposive sampling was performed. Electronic records of patients treated in the Psychiatry Department of the "Hospital de Clínicas", Paraguay, between February and May 2021 were used. Descriptive statistics were performed for all variables. Measures of central tendency and dispersion were calculated for quantitative variables. Qualitative variables were summarized in frequencies and percentages. Results: the analysis included 804 patients. Out of the patients, 71,5 % (575) were from rural areas. Out of all patients diagnosed with an anxiety disorder (20,49 % n = 165), 69,1 % (114) were female and 49,7 % (82) had panic disorder (episodic paroxysmal anxiety), 28,5 % (47) were diagnosed with generalized anxiety disorder, and 21,8 % (36) had an unspecified anxiety disorder. Conclusion: more than 20 % of the patients who consulted through the telepsychiatry modality presented with an anxiety spectrum disorder. Cases were presented in both rural and urban areas and preferably in females. Panic disorder emerged as the most frequent disorder in the accessible population, representing almost half of all diagnosed anxiety cases

Hyperoxemia and excess oxygen use in early acute respiratory distress syndrome : Insights from the LUNG SAFE study

Publisher Copyright: © 2020 The Author(s). Copyright: Copyright 2020 Elsevier B.V., All rights reserved.Background: Concerns exist regarding the prevalence and impact of unnecessary oxygen use in patients with acute respiratory distress syndrome (ARDS). We examined this issue in patients with ARDS enrolled in the Large observational study to UNderstand the Global impact of Severe Acute respiratory FailurE (LUNG SAFE) study. Methods: In this secondary analysis of the LUNG SAFE study, we wished to determine the prevalence and the outcomes associated with hyperoxemia on day 1, sustained hyperoxemia, and excessive oxygen use in patients with early ARDS. Patients who fulfilled criteria of ARDS on day 1 and day 2 of acute hypoxemic respiratory failure were categorized based on the presence of hyperoxemia (PaO2 > 100 mmHg) on day 1, sustained (i.e., present on day 1 and day 2) hyperoxemia, or excessive oxygen use (FIO2 ≥ 0.60 during hyperoxemia). Results: Of 2005 patients that met the inclusion criteria, 131 (6.5%) were hypoxemic (PaO2 < 55 mmHg), 607 (30%) had hyperoxemia on day 1, and 250 (12%) had sustained hyperoxemia. Excess FIO2 use occurred in 400 (66%) out of 607 patients with hyperoxemia. Excess FIO2 use decreased from day 1 to day 2 of ARDS, with most hyperoxemic patients on day 2 receiving relatively low FIO2. Multivariate analyses found no independent relationship between day 1 hyperoxemia, sustained hyperoxemia, or excess FIO2 use and adverse clinical outcomes. Mortality was 42% in patients with excess FIO2 use, compared to 39% in a propensity-matched sample of normoxemic (PaO2 55-100 mmHg) patients (P = 0.47). Conclusions: Hyperoxemia and excess oxygen use are both prevalent in early ARDS but are most often non-sustained. No relationship was found between hyperoxemia or excessive oxygen use and patient outcome in this cohort. Trial registration: LUNG-SAFE is registered with ClinicalTrials.gov, NCT02010073publishersversionPeer reviewe