Cybersecurity Alert Prioritization in a Critical High Power Grid With Latent Spaces

High-Power electric grid networks require extreme security in their associated telecommunication network to ensure protection and control throughout power transmission. Accordingly, supervisory control and data acquisition systems form a vital part of any critical infrastructure, and the safety of the associated telecommunication network from intrusion is crucial. Whereas events related to operation and maintenance are often available and carefully documented, only some tools have been proposed to discriminate the information dealing with the heterogeneous data from intrusion detection systems and to support the network engineers. In this work, we present the use of deep learning techniques, such as Autoencoders or conventional Multiple Correspondence Analysis, to analyze and prune the events on power communication networks in terms of categorical data types often used in anomaly and intrusion detection (such as addresses or anomaly description). This analysis allows us to quantify and statistically describe highseverity events. Overall, portions of alerts around 5-10% have been prioritized in the analysis as first to handle by managers. Moreover, probability clouds of alerts have been shown to configure explicit manifolds in latent spaces. These results offer a homogeneous framework for implementing anomaly detection prioritization in power communication networks

Análise multitemporal dos indicadores de qualidade de água em correntes superficiais (ICA) da bacia alta do rio Bogotá (Colômbia)

Introduction: This article presents the variations in water quality in the upper basin of the Bogotá River by interpreting the results obtained from the semiannual monitoring conducted by the Cundinamarca environmental authority (Corporación Autónoma Regional - car) during 2008-2015. These results correspond to the research project Economic, social and institutional variables of greater influence over second generation indicators related to the water resource and its management, carried out by the research group Neotic of the School of Engineering, Universidad Cooperativa de Colombia, Bogotá, during 2016. Method: Based on the information provided by car, the water quality index (wqi) established by the Institute of Hydrology, Meteorology and Environmental Studies (ideam) for Colombia was calculated. Results: The excessive use of agrochemicals in the upper basin of the Bogotá River has repercussions on it, since water quality already shows deterioration from this place. Anthropic factors are the main cause of pollution and environmental deterioration due to agroindustrial operations carried out around its waters. Conclusions: Although municipal mayors are aware of the problems of the Bogotá River and include mechanisms to address them in their municipal development plans, the results obtained demonstrate the need to formulate new environmental strategies or reformulate existing ones for the care and protection of this resource.Introducción: este artículo presenta las variaciones en la calidad del agua en la cuenca alta del río Bogotá, mediante la interpretación de los resultados obtenidos en monitoreos semestrales realizados durante el periodo 2008-2015 por la Corporación Autónoma Regional de Cundinamarca (car). Estos resultados previos corresponden al proyecto de investigación Variables económicas, sociales e institucionales de mayor influencia en los indicadores de segunda generación, relacionados con el recurso hídrico y su gestión, desarrollado por el grupo de investigación Neotic de la Facultad de Ingeniería de la Universidad Cooperativa de Colombia, sede Bogotá, durante el 2016. Metodología: a partir de la información suministrada por la car, se calculó el índice de calidad de agua (ica) establecido por el Instituto de Hidrología, Meteorología y Estudios Ambientales (Ideam) para Colombia. Resultados: el uso excesivo de agroquímicos en la cuenca alta del río Bogotá es un aspecto con repercusiones negativas para este, pues desde la cuenca alta ya comienza a evidenciar deterioro en su calidad. Los factores antrópicos son la principal causa de contaminación y deterioro ambiental por las actividades agroindustriales que se desarrollan en torno a sus aguas. Conclusiones: si bien las alcaldías municipales están al tanto de la problemática en torno al río Bogotá e incluyen dentro de sus planes de desarrollo municipales mecanismos para atenderlas, los resultados obtenidos evidencian la necesidad de formular nuevas estrategias ambientales o reformular las existentes para el cuidado y protección del recurso.Introdução: este artigo apresenta as variações na qualidade da água na bacia alta do rio Bogotá, mediante a interpretação dos resultados obtidos em monitoramentos semestrais realizados durante o período 2008-2015 pela Corporación Autónoma Regional de Cundinamarca (car). Esses resultados prévios correspondem ao projeto de pesquisa “Variáveis econômicas, sociais e institucionais de maior influência nos indicadores de segunda geração, relacionados com o recurso hídrico e sua gestão”, desenvolvido pelo grupo de pesquisa Neotic, da Faculdade de Engenharia da Universidad Cooperativa de Colombia, sede Bogotá, durante o ano de 2016. Metodologia: a partir da informação fornecida pela car, calculou-se o índice de qualidade da água (ica), estabelecido pelo Instituto de Hidrologia, Meteorologia e Estudos Ambientais (Ideam) para a Colômbia. Resultados: o uso excessivo de agroquímicos na bacia alta do rio Bogotá é um aspecto com consequências negativas para este, pois, desde a bacia alta, já começa a evidenciar deterioração em sua qualidade. Os fatores antrópicos são a principal causa de poluição e deterioração ambiental devido às atividades agroindustriais que se desenvolvem em torno de suas águas. Conclusões: embora as prefeituras municipais estejam cientes da problemática sobre o rio Bogotá e incluam em seus planos de desenvolvimento municipal mecanismos para atendê-las, os resultados obtidos evidenciam a necessidade de formular novas estratégias ambientais ou reformular as existentes para o cuidado e a proteção do recurso

Software para la dinámica cardíaca adulta mediante sistemas dinámicos

The normal and abnormal behavior of an adult heart dynamics and its state of evolution towards one of these two states has been characterized successfully in the context of the theory of dynamic systems and probability. The diagnostic methodology of clinical application designed under these two theories has managed to evaluate in an objective and reproducible way the cardiac dynamics from the values of the frequency of the Holter registers. The automation of this methodology through the design of a software that can be docked in any operating system for PC, and contributes as a diagnostic aid tool to generate more timely responses to the patient's clinical condition. Additionally, the values of the probability of these spaces occupied by the attractor, calculated by the Software, allow using an interface that can be consulted by the specialist to evaluate how far a cardiac dynamic is from normality, analyzing in this way the effectiveness of the treatment.A través de la teoría de la probabilidad y de los sistemas dinámicos se ha construido una metodología para evaluar la dinámica cardíaca –recientemente automatizada– mediante un software que puede ser acoplado a cualquier sistema operativo para PC. El software permite mediante una interfaz consultar la dinámica cardíaca por un especialista del área clínica y así evaluar qué tan alejada se encuentra una dinámica cardiaca de la normalidad. En este estudio se hizo uso de dicho software para desarrollar un estudio de concordancia diagnóstica para confirmar su capacidad como herramienta de evaluación a nivel clínico. Para ello se parte de la medición de: 120 registros Holter, 100 patológicos y 20 normales, durante 21 horas; con los cuales se toman los valores de la frecuencia cardíaca y numero de latidos; en base a esta información el software elabora secuencias pareadas y construye atractores con los cuales cuantifica la dimensión fractal, los espacios de ocupación en el espacio fractal de Box Counting, y los valores de la probabilidad de los espacios ocupados por el atractor. De lo anterior se encontró que este proceso permite diferenciar la normalidad de la patología aguda y su evolución, obteniendo valores de sensibilidad y especificidad del 100%. Dado este contexto, es de destacar que el proceso permite analizar de una manera objetiva y reproducible la efectividad de los tratamientos médico

Doñana, diversidad y ciencia

144 páginasLa biodiversidad es más que la suma de los elementos que componen el mundo vivo; también son biodiversidad las relaciones entre esos elementos, los procesos ecológicos que hacen posible su existencia y los procesos evolutivos que los han originado. […] Los seres humanos necesitamos a la biodiversidad más que ella a nosotros, ya que es la responsable de que la Tierra funcione de una manera satisfactoria. […] El entramado de la vida se ocupa de regular la composición de la atmósfera (y con ella, el clima), de depurar el aire y el agua, de hacer fértil al suelo, de evitar riadas y avalanchas, de polinizar las cosechas, de reducir las plagas, etc. Por todo ello es indispensable conservar la biodiversidad, hoy amenazada.” (Miguel Delibes) Doñana, diversidad y ciencia es un paseo conceptual por el espacio natural más emblemático de Europa. La esencia de un mito a través de decenas de fotografías… Un acercamiento respetuoso a la diversidad de sus conceptos, un paseo por la esencia de su historia y una curiosa aproximación a la ciencia que genera hoy en día. En este recorrido descubriremos el carácter distintivo de algunos de los parajes de la reserva, sus matices más interesantes, las texturas y las formas más sorprendentes de la naturaleza, sus colores y conjuntos, sus transformaciones en las últimas décadas y la influencia de la presencia humana en el privilegiado ecosistema de la Reserva Biológica de Doñana

CD6 modulates thymocyte selection and peripheral T cell homeostasis

The CD6 glycoprotein is a lymphocyte surface receptor putatively involved in T cell development and activation. CD6 facilitates adhesion between T cells and antigen-presenting cells through its interaction with CD166/ALCAM (activated leukocyte cell adhesion molecule), and physically associates with the T cell receptor (TCR) at the center of the immunological synapse. However, its precise role during thymocyte development and peripheral T cell immune responses remains to be defined. Here, we analyze the in vivo consequences of CD6 deficiency. CD6(-/-) thymi showed a reduction in both CD4(+) and CD8(+) single-positive subsets, and double-positive thymocytes exhibited increased Ca(2+) mobilization to TCR cross-linking in vitro. Bone marrow chimera experiments revealed a T cell-autonomous selective disadvantage of CD6(-/-) T cells during development. The analysis of TCR-transgenic mice (OT-I and Marilyn) confirmed that abnormal T cell selection events occur in the absence of CD6. CD6(-/-) mice displayed increased frequencies of antigen-experienced peripheral T cells generated under certain levels of TCR signal strength or co-stimulation, such as effector/memory (CD4(+)TEM and CD8(+)TCM) and regulatory (T reg) T cells. The suppressive activity of CD6(-/-) T reg cells was diminished, and CD6(-/-) mice presented an exacerbated autoimmune response to collagen. Collectively, these data indicate that CD6 modulates the threshold for thymocyte selection and the generation and/or function of several peripheral T cell subpopulations, including T reg cells

Plan de emerxencias. Fundación Pública Urxencias Sanitarias de Galicia-061

A Fundación Pública Urxencias Sanitarias de Galicia-061 é a encargada de proporcionar, desde o momento que ocorre a emerxencia, un control da situación, unha primeira avaliación e unha asistencia sanitaria que logre salvar o maior número de vidas e volver á normalidade o antes posible. Para isto, a actuación sanitaria debe seguir unha metodoloxía perfectamente establecida, xa que as actuacións organizadas son as mellores ferramentas de traballo. Así pois, é necesario posibilitar normas de actuación o máis protocolizadas posible, para poder traballar nas mellores condicións de seguridade e manter unhas directrices xerais, onde cada persoa coñeza tanto a súa función como a do resto dos componentes do equipo, procedendo, ademais, á súa identificación funcional mediante signos externos (uniformidade, carteis, identificación, etc.); para facilitar o entendemento e a coordinación de todos os implicados en resolver a situación acaecida. Con este fin, preséntase o Plan de emerxencias que a continuación se expón, nun afán de dar sempre a mellor e máis axeitada resposta; obxectivo primordial desde que a FPUS de Galicia–061 se instaura como responsable da medicina prehospitalaria na nosa comunidade autónoma.La Fundación Pública Urxencias Sanitarias de Galicia-061 es la encargada de proporcionar, desde el momento en que ocurre la emergencia, un control de la situación, una primera evaluación y una asistencia sanitaria que logre salvar el mayor número de vidas y volver a la normalidad lo antes posible. Para esto, la actuación sanitaria debe seguir una metodología perfectamente establecida, ya que las actuaciones organizadas son las mejores herramientas de trabajo. Así pues, es necesario posibilitar normas de actuación lo más protocolizadas posible, para poder trabajar en las mejores condiciones de seguridad y mantener unas directrices generales, donde cada persona conozca tanto su función como la del resto de los componentes del equipo, procediendo, además, a su identificación funcional mediante signos externos (uniformidad, carteles, identificación, etc.); para facilitar el entendimiento y la coordinación de todos los implicados en resolver la situación acaecidad. Con este fin, se presenta el Plan de emergencias que a continuación se expone, en un afán de dar siempre la respuesta mejor y más idónea; objetivo primordial desde que la FPUS de Galicia-061 se instaura como responsable de la medicina prehospitalaria en nuestra comunidad autónoma

Management of acute diverticulitis with pericolic free gas (ADIFAS). an international multicenter observational study

Background: There are no specific recommendations regarding the optimal management of this group of patients. The World Society of Emergency Surgery suggested a nonoperative strategy with antibiotic therapy, but this was a weak recommendation. This study aims to identify the optimal management of patients with acute diverticulitis (AD) presenting with pericolic free air with or without pericolic fluid. Methods: A multicenter, prospective, international study of patients diagnosed with AD and pericolic-free air with or without pericolic free fluid at a computed tomography (CT) scan between May 2020 and June 2021 was included. Patients were excluded if they had intra-abdominal distant free air, an abscess, generalized peritonitis, or less than a 1-year follow-up. The primary outcome was the rate of failure of nonoperative management within the index admission. Secondary outcomes included the rate of failure of nonoperative management within the first year and risk factors for failure. Results: A total of 810 patients were recruited across 69 European and South American centers; 744 patients (92%) were treated nonoperatively, and 66 (8%) underwent immediate surgery. Baseline characteristics were similar between groups. Hinchey II-IV on diagnostic imaging was the only independent risk factor for surgical intervention during index admission (odds ratios: 12.5, 95% CI: 2.4-64, P =0.003). Among patients treated nonoperatively, at index admission, 697 (94%) patients were discharged without any complications, 35 (4.7%) required emergency surgery, and 12 (1.6%) percutaneous drainage. Free pericolic fluid on CT scan was associated with a higher risk of failure of nonoperative management (odds ratios: 4.9, 95% CI: 1.2-19.9, P =0.023), with 88% of success compared to 96% without free fluid ( P <0.001). The rate of treatment failure with nonoperative management during the first year of follow-up was 16.5%. Conclusion: Patients with AD presenting with pericolic free gas can be successfully managed nonoperatively in the vast majority of cases. Patients with both free pericolic gas and free pericolic fluid on a CT scan are at a higher risk of failing nonoperative management and require closer observation

Association Between Preexisting Versus Newly Identified Atrial Fibrillation and Outcomes of Patients With Acute Pulmonary Embolism

Background Atrial fibrillation (AF) may exist before or occur early in the course of pulmonary embolism (PE). We determined the PE outcomes based on the presence and timing of AF. Methods and Results Using the data from a multicenter PE registry, we identified 3 groups: (1) those with preexisting AF, (2) patients with new AF within 2 days from acute PE (incident AF), and (3) patients without AF. We assessed the 90-day and 1-year risk of mortality and stroke in patients with AF, compared with those without AF (reference group). Among 16 497 patients with PE, 792 had preexisting AF. These patients had increased odds of 90-day all-cause (odds ratio [OR], 2.81; 95% CI, 2.33-3.38) and PE-related mortality (OR, 2.38; 95% CI, 1.37-4.14) and increased 1-year hazard for ischemic stroke (hazard ratio, 5.48; 95% CI, 3.10-9.69) compared with those without AF. After multivariable adjustment, preexisting AF was associated with significantly increased odds of all-cause mortality (OR, 1.91; 95% CI, 1.57-2.32) but not PE-related mortality (OR, 1.50; 95% CI, 0.85-2.66). Among 16 497 patients with PE, 445 developed new incident AF within 2 days of acute PE. Incident AF was associated with increased odds of 90-day all-cause (OR, 2.28; 95% CI, 1.75-2.97) and PE-related (OR, 3.64; 95% CI, 2.01-6.59) mortality but not stroke. Findings were similar in multivariable analyses. Conclusions In patients with acute symptomatic PE, both preexisting AF and incident AF predict adverse clinical outcomes. The type of adverse outcomes may differ depending on the timing of AF onset.info:eu-repo/semantics/publishedVersio

Treatment with tocilizumab or corticosteroids for COVID-19 patients with hyperinflammatory state: a multicentre cohort study (SAM-COVID-19)

Objectives: The objective of this study was to estimate the association between tocilizumab or corticosteroids and the risk of intubation or death in patients with coronavirus disease 19 (COVID-19) with a hyperinflammatory state according to clinical and laboratory parameters. Methods: A cohort study was performed in 60 Spanish hospitals including 778 patients with COVID-19 and clinical and laboratory data indicative of a hyperinflammatory state. Treatment was mainly with tocilizumab, an intermediate-high dose of corticosteroids (IHDC), a pulse dose of corticosteroids (PDC), combination therapy, or no treatment. Primary outcome was intubation or death; follow-up was 21 days. Propensity score-adjusted estimations using Cox regression (logistic regression if needed) were calculated. Propensity scores were used as confounders, matching variables and for the inverse probability of treatment weights (IPTWs). Results: In all, 88, 117, 78 and 151 patients treated with tocilizumab, IHDC, PDC, and combination therapy, respectively, were compared with 344 untreated patients. The primary endpoint occurred in 10 (11.4%), 27 (23.1%), 12 (15.4%), 40 (25.6%) and 69 (21.1%), respectively. The IPTW-based hazard ratios (odds ratio for combination therapy) for the primary endpoint were 0.32 (95%CI 0.22-0.47; p < 0.001) for tocilizumab, 0.82 (0.71-1.30; p 0.82) for IHDC, 0.61 (0.43-0.86; p 0.006) for PDC, and 1.17 (0.86-1.58; p 0.30) for combination therapy. Other applications of the propensity score provided similar results, but were not significant for PDC. Tocilizumab was also associated with lower hazard of death alone in IPTW analysis (0.07; 0.02-0.17; p < 0.001). Conclusions: Tocilizumab might be useful in COVID-19 patients with a hyperinflammatory state and should be prioritized for randomized trials in this situatio