Estudio de vigilancia tecnológica sobre TV White Spaces, enfocado a la conectividad en zonas rurales en Colombia

The development of this research is aimed at knowing the most important aspects of TV White Spaces (TVWS) technology, operation, architecture, use cases, regulation and implementations in Colombia and in various parts of the world, as a starting point for evolution. of wireless communications in the rural sector. The first step to know the current state of technology, the technological surveillance process (VT) is adopted, of which the planning, search and capture, and analysis and organization phases are applied. In the first planning phase, it is found that there is no existing study of technological surveillance of TVWS technology in Colombia and that we make way for factors that we can achieve with this study, such as early anticipation of technological changes, minimization of associated technological risks. to innovation and to expose the early detection of opportunities and technological cooperation. Next, it exposes the existing needs in Colombia and the critical surveillance factors of the TVWS, such as the technology that reduces this gap of non-connectivity. As a general conclusion to this entire process of technological surveillance, it is to make known and recommend the use in Colombia of the base station-client architecture with georeferenced equipment that resolves which channels are available and achieves connectivity over long distances, overcoming interference and demonstrating advantages over other wireless technologies with reference to costs, infrastructure, uses, laws and regulations. It is disclosed that MESH topologies such as some of the existing wireless technologies (Wi-Fi, LTE, 5G) can be implemented in a hybrid way with TVWS technology for rural sectors with houses far from each other, where implementation with other technologies becomes unfeasible.La elaboración de esta investigación va dirigida a conocer los aspectos más importantes de la tecnología TV White Spaces (TVWS), como la operación, arquitectura, casos de uso, regulación e implementaciones en Colombia y en diversas partes del mundo, punto de partida en la evolución de las comunicaciones inalámbricas en el sector rural. Se adopta el proceso de vigilancia tecnológica (VT), aplicando las fases de planeación, búsqueda y captación, y análisis y organización, empezando con el estado actual de la tecnología TVWS. En la primera fase de planificación se encuentra que no existe en Colombia ningún estudio existente de vigilancia tecnológica en la tecnología TVWS y que da paso a factores que se alcanzan con este estudio, tales como la anticipación temprana de cambios tecnológicos, la minimización de riesgos tecnológicos asociados a innovación y a exponer la detección temprana de oportunidades y de cooperación tecnológica. Seguidamente se exponen las necesidades existentes en Colombia y los factores críticos en la vigilancia de la tecnología TVWS, evidenciando que esta tecnología reduce la brecha de la no conectividad. Como conclusión general a todo este proceso de vigilancia tecnológica es dar a conocer y recomendar el uso en Colombia de la arquitectura estación base–cliente con equipos georreferenciados que resuelven que canales están disponibles y logran conectividad a largas distancias, superando interferencias y demostrando ventajas sobre las demás tecnologías inalámbricas con referencia al costo, infraestructura, usos, legislaciones y regulaciones. Se da a conocer que las topologías MESH como algunas de las tecnologías inalámbricas existentes (Wi-Fi, LTE, 5G) se pueden implementar de manera hibrida con la tecnología TVWS para sectores rurales con viviendas distanciadas entre sí, en donde la implementación con otras tecnologías se vuelve inviable

Impact of COVID-19 on cardiovascular testing in the United States versus the rest of the world

Objectives: This study sought to quantify and compare the decline in volumes of cardiovascular procedures between the United States and non-US institutions during the early phase of the coronavirus disease-2019 (COVID-19) pandemic. Background: The COVID-19 pandemic has disrupted the care of many non-COVID-19 illnesses. Reductions in diagnostic cardiovascular testing around the world have led to concerns over the implications of reduced testing for cardiovascular disease (CVD) morbidity and mortality. Methods: Data were submitted to the INCAPS-COVID (International Atomic Energy Agency Non-Invasive Cardiology Protocols Study of COVID-19), a multinational registry comprising 909 institutions in 108 countries (including 155 facilities in 40 U.S. states), assessing the impact of the COVID-19 pandemic on volumes of diagnostic cardiovascular procedures. Data were obtained for April 2020 and compared with volumes of baseline procedures from March 2019. We compared laboratory characteristics, practices, and procedure volumes between U.S. and non-U.S. facilities and between U.S. geographic regions and identified factors associated with volume reduction in the United States. Results: Reductions in the volumes of procedures in the United States were similar to those in non-U.S. facilities (68% vs. 63%, respectively; p = 0.237), although U.S. facilities reported greater reductions in invasive coronary angiography (69% vs. 53%, respectively; p < 0.001). Significantly more U.S. facilities reported increased use of telehealth and patient screening measures than non-U.S. facilities, such as temperature checks, symptom screenings, and COVID-19 testing. Reductions in volumes of procedures differed between U.S. regions, with larger declines observed in the Northeast (76%) and Midwest (74%) than in the South (62%) and West (44%). Prevalence of COVID-19, staff redeployments, outpatient centers, and urban centers were associated with greater reductions in volume in U.S. facilities in a multivariable analysis. Conclusions: We observed marked reductions in U.S. cardiovascular testing in the early phase of the pandemic and significant variability between U.S. regions. The association between reductions of volumes and COVID-19 prevalence in the United States highlighted the need for proactive efforts to maintain access to cardiovascular testing in areas most affected by outbreaks of COVID-19 infection

Technological surveillance study on TV White Spaces, focused on connectivity in rural areas in Colombia

ilustraciones, graficasLa elaboración de esta investigación va dirigida a conocer los aspectos más importantes de la tecnología TV White Spaces (TVWS), operación, arquitectura, casos de uso, regulación e implementaciones en Colombia y en diversas partes del mundo, como punto de partida a la evolución de las comunicaciones inalámbricas en el sector rural. El primer paso para conocer el estado actual de la tecnología, se adopta el proceso de vigilancia tecnológica (VT) de las cuales se aplican las fases planeación, búsqueda y captación y análisis y organización. En la primera fase de planificación se encuentra que no existe en Colombia ningún estudio existente de vigilancia tecnológica de la tecnología TVWS y que nos abrimos paso a factores que podremos alcanzar con este estudio tales como la anticipación temprana de cambios tecnológicos, minimización de riesgos tecnológicos asociados a innovación y a exponer la detección temprana de oportunidades y de cooperación tecnológica. Seguidamente expone las necesidades existentes en Colombia y los factores críticos de vigilancia de los TVWS como la tecnología que reduzca esa brecha de la no conectividad. Una vez terminada la fase de planificación abrimos paso a la fase de búsqueda y captación que por medio de una ecuación declarada en cada uno de los diferentes motores y bibliotecas online nos aporte información de los TVWS en el sector rural. Con esta información recolectada se realiza un corpus de información. El proceso final es el análisis de toda la información recolectada, y en base a esa información se hace la extracción y el debido tratamiento analítico en las diversas ilustraciones que me genera el software VOSviewer y el estudio de la asociación de cada uno de los factores críticos de vigilancia. Como conclusión general a todo este proceso de vigilancia tecnológica es dar a conocer y recomendar el uso en Colombia de la arquitectura estación base – cliente con equipos georreferenciados que resuelven que canales están disponibles y logran conectividad a largas distancias, superando interferencias y demostrando ventajas sobre demás tecnologías inalámbricas con referencia a costo, infraestructura, usos, legislaciones y regulaciones. Se da a conocer que las topologías (MESH) y como las tecnologías inalámbricas existentes (Wi-Fi, LTE, 5G) se pueden implementar de manera hibrida con los TVWS para sectores rurales con viviendas dispersas una de otra, en donde en la implementación con otras tecnologías se vuelve inviable (Texto tomado de la fuente).The elaboration of this research is aimed at knowing the most important aspects of TV White Space (TVWS) technology, operation, architecture, use cases, regulation and implementations in Colombia and in various parts of the world, as a starting point for evolution. of wireless communications in the rural sector. The first step to know the current state of technology, the technological surveillance process (VT) is adopted, of which only the phases (planning, search and analysis) are applied. In the first planning phase, it is found that there is no existing study of technological surveillance of TVWS technology in Colombia and that we make way for factors that we will achieve with this study, such as the anticipation of technological changes, minimization of technological risks associated with innovation. and to expose the early detection of opportunities and technological cooperation. Next, they expose the existing needs in Colombia and the critical surveillance factors of the TVWS, such as the technology that reduces this gap of non-connectivity. Once the planning phase is over, we open the way to the search phase that, through an equation declared in each of the different engines and online libraries, provides us with information on the TVWS in the rural sector. With this collected information, a corpus of information is made. The final process is the analysis of all the information collected, and based on that information, the extraction and due analytical treatment is made in the various illustrations generated by the VOSviewer software and the study of the association of each of the critical factors of vigilance. As a general conclusion to this entire technological surveillance process, it is to publicize and recommend the use in Colombia of the base station-client architecture with georeferenced equipment that resolves which channels are available and achieves connectivity over long distances, overcoming interference and demonstrating advantages over other wireless technologies with reference to cost, infrastructure, uses, laws and regulations. It is disclosed that the topologies (MESH) and how the existing wireless technologies (Wi-Fi, LTE, 5G) can be implemented in a hybrid way with the TVWS for rural sectors with dispersed homes from one another, where in the implementation with other technologies become unfeasible.MaestríaMagíster en Ingeniería - Ingeniería de Sistemas y ComputaciónMetodología VT de Palop-Marro, Sánchez-Torres en sus tres primeras fases.Sistemas y organizacione

Libro de Proyectos Finales 2021 primer semestre

PregradoIngeniero CivilIngeniero de SistemasIngeniero ElectricistaIngeniero ElectrónicoIngeniero IndustrialIngeniero Mecánic

Death in hospital following ICU discharge: insights from the LUNG SAFE study

ackground: To determine the frequency of, and factors associated with, death in hospital following ICU discharge to the ward. Methods: The Large observational study to UNderstand the Global impact of Severe Acute respiratory FailurE study was an international, multicenter, prospective cohort study of patients with severe respiratory failure, conducted across 459 ICUs from 50 countries globally. This study aimed to understand the frequency and factors associated with death in hospital in patients who survived their ICU stay. We examined outcomes in the subpopulation discharged with no limitations of life sustaining treatments ('treatment limitations'), and the subpopulations with treatment limitations. Results: 2186 (94%) patients with no treatment limitations discharged from ICU survived, while 142 (6%) died in hospital. 118 (61%) of patients with treatment limitations survived while 77 (39%) patients died in hospital. Patients without treatment limitations that died in hospital after ICU discharge were older, more likely to have COPD, immunocompromise or chronic renal failure, less likely to have trauma as a risk factor for ARDS. Patients that died post ICU discharge were less likely to receive neuromuscular blockade, or to receive any adjunctive measure, and had a higher pre- ICU discharge non-pulmonary SOFA score. A similar pattern was seen in patients with treatment limitations that died in hospital following ICU discharge. Conclusions: A significant proportion of patients die in hospital following discharge from ICU, with higher mortality in patients with limitations of life-sustaining treatments in place. Non-survivors had higher systemic illness severity scores at ICU discharge than survivors

Reduction of cardiac imaging tests during the COVID-19 pandemic: The case of Italy. Findings from the IAEA Non-invasive Cardiology Protocol Survey on COVID-19 (INCAPS COVID)

Background: In early 2020, COVID-19 massively hit Italy, earlier and harder than any other European country. This caused a series of strict containment measures, aimed at blocking the spread of the pandemic. Healthcare delivery was also affected when resources were diverted towards care of COVID-19 patients, including intensive care wards. Aim of the study: The aim is assessing the impact of COVID-19 on cardiac imaging in Italy, compare to the Rest of Europe (RoE) and the World (RoW). Methods: A global survey was conducted in May–June 2020 worldwide, through a questionnaire distributed online. The survey covered three periods: March and April 2020, and March 2019. Data from 52 Italian centres, a subset of the 909 participating centres from 108 countries, were analyzed. Results: In Italy, volumes decreased by 67% in March 2020, compared to March 2019, as opposed to a significantly lower decrease (p &lt; 0.001) in RoE and RoW (41% and 40%, respectively). A further decrease from March 2020 to April 2020 summed up to 76% for the North, 77% for the Centre and 86% for the South. When compared to the RoE and RoW, this further decrease from March 2020 to April 2020 in Italy was significantly less (p = 0.005), most likely reflecting the earlier effects of the containment measures in Italy, taken earlier than anywhere else in the West. Conclusions: The COVID-19 pandemic massively hit Italy and caused a disruption of healthcare services, including cardiac imaging studies. This raises concern about the medium- and long-term consequences for the high number of patients who were denied timely diagnoses and the subsequent lifesaving therapies and procedures

International Impact of COVID-19 on the Diagnosis of Heart Disease

Background: The coronavirus disease 2019 (COVID-19) pandemic has adversely affected diagnosis and treatment of noncommunicable diseases. Its effects on delivery of diagnostic care for cardiovascular disease, which remains the leading cause of death worldwide, have not been quantified. Objectives: The study sought to assess COVID-19's impact on global cardiovascular diagnostic procedural volumes and safety practices. Methods: The International Atomic Energy Agency conducted a worldwide survey assessing alterations in cardiovascular procedure volumes and safety practices resulting from COVID-19. Noninvasive and invasive cardiac testing volumes were obtained from participating sites for March and April 2020 and compared with those from March 2019. Availability of personal protective equipment and pandemic-related testing practice changes were ascertained. Results: Surveys were submitted from 909 inpatient and outpatient centers performing cardiac diagnostic procedures, in 108 countries. Procedure volumes decreased 42% from March 2019 to March 2020, and 64% from March 2019 to April 2020. Transthoracic echocardiography decreased by 59%, transesophageal echocardiography 76%, and stress tests 78%, which varied between stress modalities. Coronary angiography (invasive or computed tomography) decreased 55% (p &lt; 0.001 for each procedure). In multivariable regression, significantly greater reduction in procedures occurred for centers in countries with lower gross domestic product. Location in a low-income and lower–middle-income country was associated with an additional 22% reduction in cardiac procedures and less availability of personal protective equipment and telehealth. Conclusions: COVID-19 was associated with a significant and abrupt reduction in cardiovascular diagnostic testing across the globe, especially affecting the world's economically challenged. Further study of cardiovascular outcomes and COVID-19–related changes in care delivery is warranted

Impact of COVID-19 on Diagnostic Cardiac Procedural Volume in Oceania: The IAEA Non-Invasive Cardiology Protocol Survey on COVID-19 (INCAPS COVID)

Objectives: The INCAPS COVID Oceania study aimed to assess the impact caused by the COVID-19 pandemic on cardiac procedure volume provided in the Oceania region. Methods: A retrospective survey was performed comparing procedure volumes within March 2019 (pre-COVID-19) with April 2020 (during first wave of COVID-19 pandemic). Sixty-three (63) health care facilities within Oceania that perform cardiac diagnostic procedures were surveyed, including a mixture of metropolitan and regional, hospital and outpatient, public and private sites, and 846 facilities outside of Oceania. The percentage change in procedure volume was measured between March 2019 and April 2020, compared by test type and by facility. Results: In Oceania, the total cardiac diagnostic procedure volume was reduced by 52.2% from March 2019 to April 2020, compared to a reduction of 75.9% seen in the rest of the world (p&lt;0.001). Within Oceania sites, this reduction varied significantly between procedure types, but not between types of health care facility. All procedure types (other than stress cardiac magnetic resonance [CMR] and positron emission tomography [PET]) saw significant reductions in volume over this time period (p&lt;0.001). In Oceania, transthoracic echocardiography (TTE) decreased by 51.6%, transoesophageal echocardiography (TOE) by 74.0%, and stress tests by 65% overall, which was more pronounced for stress electrocardiograph (ECG) (81.8%) and stress echocardiography (76.7%) compared to stress single-photon emission computerised tomography (SPECT) (44.3%). Invasive coronary angiography decreased by 36.7% in Oceania. Conclusion: A significant reduction in cardiac diagnostic procedure volume was seen across all facility types in Oceania and was likely a function of recommendations from cardiac societies and directives from government to minimise spread of COVID-19 amongst patients and staff. Longer term evaluation is important to assess for negative patient outcomes which may relate to deferral of usual models of care within cardiology