Bloqueadores de Canales de Calcio como factor protector para Stroke Isquémico en pacientes con Hipertensión Arterial

Objetivo: El objetivo de este estudio fue determinar si la terapia doble de IECA/ARAII asociado a bloqueadores de canales de calcio ofrecen protección contra Stroke Isquémico en comparación con la terapia doble de IECA/ARAII asociado a betabloqueadores adrenérgicos o diuréticos en pacientes hipertensos atendidos en el Hospital Víctor Lazarte Echegaray. Materiales y métodos: Se realizó un estudio observacional de cohorte retrospectiva en pacientes hipertensos atendidos en consultorio externo del servicio de cardiología del Hospital Víctor Lazarte Echegaray, durante el periodo 2017-2022. Se registró el diagnóstico hipertensión arterial y se les dio tratamiento doble de IECA o ARA II con bloqueadores de canales de calcio, betabloqueadores adrenérgicos o diuréticos, para más tarde distinguir a los pacientes que hicieron accidente cerebrovascular isquémico. Resultados: El estudio incluyó un total de 232 pacientes, los pacientes hipertensos con tratamiento doble de IECA/ARAII asociado a bloqueadores de canales de calcio, el 7.8%(9), hicieron stroke, el 92.2%(197), no hicieron stroke, por otro lado los pacientes que tuvieron terapia doble que incluya betabloqueadores adrenérgicos o diuréticos, el 26.7%(31), hicieron stroke, y el 73.3%(85), no desarrollaron stroke, comprobando que los pacientes con bloqueadores de canales de calcio tienen 71% menos probabilidad de generar stroke RR 0.29 con un (P <0.001) Conclusiones: La terapia doble con IECA o ARA-II asociado a bloqueadores de canales de calcio es un factor de protección, en relación al riesgo de sufrir Stroke isquémico, en los pacientes con Hipertensión Arterial del Hospital Víctor Lazarte EchegarayObjective: The objective of this study was to determine if calcium channel blockers offer protection against ischemic stroke compared to double therapy that includes beta-adrenergic blockers or diuretics in hypertensive patients treated at the Víctor Lazarte Echegaray hospital. Materials and methods: A retrospective cohort observational study was carried out in hypertensive patients treated in the outpatient clinic of the cardiology service of the Víctor Lazarte Echegaray Hospital, during the period 2017-2022. The diagnosis of arterial hypertension was recorded and they were given double treatment of ACE inhibitors or ARA II with calcium channel blockers, beta adrenergic blockers or diuretics, to later distinguish patients who had ischemic stroke Results: The study included a total of 232 patients, hypertensive patients with dual treatment with calcium channel blockers, 7.8%(9), had a stroke, 92.2%(197), did not have a stroke, on the other hand the patients who had double therapy with adrenergic beta-blockers or diuretics, 26.7%(31) had a stroke, and 73.3%(85) did not develop a stroke, proving that patients with calcium channel blockers have a 71% less probability of generating a stroke RR 0.29 with a (P < 0.001) Conclusions: The dual therapy with ACE inhibitors or ARBs in combination with calcium channel blockers is a protective factor against the risk of ischemic stroke in patients with arterial hypertension at the Víctor Lazarte Echegaray HospitalTesi

Real-Time Estimation of Illumination Direction for Augmented Reality with Low-Cost Sensors

In recent years, Augmented Reality has become a very popular topic, both as a research and commercial field. This trend has originated with the use of mobile devices as computational core and display. The appearance of virtual objects and their interaction with the real world is a key element in the success of an Augmented Reality software. A common issue in this type of software is the visual inconsistency between the virtual and real objects due to wrong illumination. Although illumination is a common research topic in Computer Graphics, few studies have been made about real time estimation of illumination direction. In this work we present a low-cost approach to detect the direction of the environment illumination, allowing the illumination of virtual objects according to the real light of the ambient, improving the integration of the scene. Our solution is open-source, based on Arduino hardware and the presented system was developed on Android.XIV Workshop Computación Gráfica, Imágenes y Visualización (WCGIV).Red de Universidades con Carreras en Informática (RedUNCI

A very simple analog control for QSW-ZVS source/sink buck converter with seamless mode transition

A simple, analog, control circuit is proposed for seamless transition between source and sink modes in a Quasi-Square-Wave Zero Voltage Switching (QSW-ZVS) source/sink buck converter. The inductor current is controlled by a variablewidth hysteretic current mode control. The upper and lower bounds of the hysteretic band are clamped to ensure QSW-ZVS operation with a single current command from the control loop and independently from the power flow direction. This enables the control of any PWM converter able to operate in QSW-ZVS with a single control loop. If the proposed circuit is used, using a complex multi-mode or look-up-table based digital control is no longer required, simplifying the implementation and lowering the cost of the converter. A 50 W buck converter is built to demonstrate the proposed control circuit and experimental measurements are shown to verify its correct operation.Este trabajo ha sido financiado por el Gobierno de España a través del proyecto DPI2013-47176-C2-2-R y el Gobierno del Principado de Asturias a través del proyecto SV-PA-17-RIS3-4, la beca “Severo Ochoa” BP14-085 y los fondos FEDER.Nineteenth IEEE Workshop on Control and Modeling for Power Electronics, IEEE COMPEL 201

Optimization procedure of source/sink converters for DC power distribution nano-grids

DC-Power Distribution Systems require DC-DC converters to interface all their elements. These converters should provide a high power quality and be efficient, compact and inexpensive. Furthermore, the characteristics of the loads and sources connected to these converters are not known beforehand and may change widely (there is no regulation about the DC loads, such as IEC61000-3-2 in AC grids). As a consequence, the design procedure is neither standard nor obvious. This work proposes an optimized design procedure for any Bus Provider in a DC-Power Distribution System. It is based on models, hence extensible to different Bus-Provider topologies, and takes into account the main issues in DC-Power Distribution Systems, especially the design conditions imposed by the wide variety of loads, or even sources, which may be connected to the output bus. Experimental results obtained from three designs show a close match with the analytical models and verify that the proposed procedure minimizes converter losses and complies with the requirements.Este trabajo ha sido financiado por el Gobierno de España a través del proyecto DPI2013-47176-C2-2-R y el Gobierno del Principado de Asturias a través del proyecto SV-PA-17-RIS3-4, la beca “Severo Ochoa” BP14-085 y los fondos FEDER.Nineteenth IEEE Workshop on Control and Modeling for Power Electronics, IEEE COMPEL 201

Real-Time Estimation of Illumination Direction for Augmented Reality with Low-Cost Sensors

In recent years, Augmented Reality has become a very popular topic, both as a research and commercial field. This trend has originated with the use of mobile devices as computational core and display. The appearance of virtual objects and their interaction with the real world is a key element in the success of an Augmented Reality software. A common issue in this type of software is the visual inconsistency between the virtual and real objects due to wrong illumination. Although illumination is a common research topic in Computer Graphics, few studies have been made about real time estimation of illumination direction. In this work we present a low-cost approach to detect the direction of the environment illumination, allowing the illumination of virtual objects according to the real light of the ambient, improving the integration of the scene. Our solution is open-source, based on Arduino hardware and the presented system was developed on Android.XIV Workshop Computación Gráfica, Imágenes y Visualización (WCGIV).Red de Universidades con Carreras en Informática (RedUNCI

Ten Frontier Technologies for International Development

The report finds clear evidence of the potential of frontier technologies to contribute to social, economic and political development gains in a number of ways, by: • Driving innovations in business models, products and processes that provide new goods and services to ‘bottom of the pyramid’ consumers; • Providing the means by which to make better use of existing underutilised household and productive assets; • Catalysing increases in demand, nationally and internationally, which create new industries and markets, leading to macro- and microeconomic growth; and • Changing demand for labour and capital, leading to direct job creation and transformation of the workforce. For all of the potential upsides, potential downsides must also be considered. While it will largely be the private sector that will drive deployment of these technologies, the public sector through national regulation, as well as development financing, will have a major role in mediating the pace and direction of technological change, both to achieve development objectives, and to protect potential losers.As new technologies and digital business models reshape economies and disrupt incumbencies, interest has surged in the potential of novel frontier technologies to also contribute to positive changes in international development and humanitarian contexts. Widespread adoption of new technologies is acknowledged as centrally important to achieving the United Nations Sustainable Development Goals by 2030. But while frontier technologies can rapidly address large-scale economic, social or political challenges, they can also involve the displacement of existing technologies and carry considerable uncertainty and risk. Although there have been significant wins bringing the benefits of new technologies to poor consumers through examples such as mobile money or off-grid solar energy, there are many other areas where the applications may not yet have been developed into viable market solutions, or where opportunities have not yet been taken up in development practice

Doing Digital Development Differently: lessons in adaptive management from technology for governance initiatives in Kenya

Development projects don’t always work as planned. This has long been acknowledged by those in the sector, and has led to several approaches that seek to solve complex development problems through enabling and encouraging greater adaptiveness and learning within projects (e.g. Doing Development Differently and Problem-Driven Iterative Adaptation). Digital development projects experience many of these issues. Using technology for transparency and accountability (Tech4T&A) projects in Kenya as case studies, this research analysed the many different theoretical approaches to learning and adaptation, and then tested how these play out in reality. Firstly, the authors conducted an extensive review of the literature on the spectrum of approaches to adaptive learning. The findings were used to develop a framework through which to analyse adaptiveness at the different layers of complexity in projects (e.g. software design and development, programme design and management). The second part of the research consisted of interviews and focus group discussions with members of Tech4T&A projects in Kenya. Respondents helped identify the main characteristics of adaptiveness in Tech4T&A projects (e.g. who needs to adapt, and how and when) and the challenges and issues that inhibit projects’ ability to be adaptive. This process also revealed how accountability interplays with adaptiveness, and considered how better collaboration flows can enable adaptiveness. From a literature review and empirical study, the authors drew several conclusions for increasing adaptiveness in digital development projects. These include simplifying the many adaptive theories that abound, increasing responsiveness to project beneficiaries and stakeholders – and for stakeholders to keep on experimenting, networking and advocating.DFIDUSAIDOmidyar NetworkSid

The Impact of Digital Technology on Economic Growth and Productivity, and its Implications for Employment and Equality: An Evidence Review

As digital technology has begun to ‘eat the world’ it has also influenced the way that humans interact and transact with each other. Thus, it has inevitably had an effect on global, regional, national and local economies. This Evidence Report reviews the literature assessing the economic impact of digital technologies – namely information communication technology (ICT) – on economies and people. In terms of the economic effects of digital technology on economies, this literature review summarises its relationship with economic growth and productivity. Although increases in ICT infrastructure/equipment investment and increased ICT adoption tend to be strongly correlated with economic growth and productivity, causality is yet to be resolved, and the potential for endogenous, simultaneous and reverse causality remains. In other words, there is still the possibility that the economic impacts of the internet are caused by a third variable, that the economic impacts lead to internet adaption at the same time that internet adaption leads to economic impacts, and that it is economic growth that causes internet adaption rather than vice versa. Furthermore, the correlations tend to be highly heterogeneous – different across space and time – suggesting that the relationship is not always given. The review also summarises the literature concerning the effects of digital technology on employment and inequality.UK Department for International Developmen

Hezkuntza emozionala gorputz adierazpenaren bidez lantzeko proposamen didaktikoa

48 p. : il. -- Bibliogr.: p. 41-43[EUS] Orain arteko hezkuntzan egondako lanketa emozionalaren hutsunearen ondorioz, lan honen bitartez, hezkuntza emozionala sustatzen duen proposamen bat egitea izan da helburua. Horretarako, Gorputz Hezkuntzako saioak erabili dira 9-10 urteko ikasleekin, non, Gorputz adierazpena bitartekari gisa erabilita, konpetentzia emozionala landu den. Egindako proposamena sei saioz osatutako sekuentzia didaktiko batek osatzen du, martxan jartzeko aukera izanik. Unitate didaktikoa sortzeaz gain, martxan jarri eta bertatik emaitza zein ondorio anitzak eskuratu ahal izan dira, hala nola, ikasleek beraien ikaskuntza prozesuan zehar hezkuntza emozionala eta konpetentzia emozionalaren gaineko lanketa urria. Hezkuntzak jarraitu beharreko curriculumean, emozioak bere tokia izatearen garrantzia goraipatzen da, heziketa, lanketa emozionala eta garapen integrala lortzeko asmoz.[ES] Dada la carencia de la educación emocional en las aulas, el objetivo principal de este trabajo es hacer una propuesta en forma de unidad didáctica para formar a los alumnos sin dejar de lado en el ámbito emocional. Para ello, se propone una secuencia didáctica de seis sesiones, llevada a cabo con niños y niñas de 9 y 10 años, en la cual ha sido utilizada la expresión corporal como medio en las clases de Educación Física. Amén de crear la unidad didáctica, esta se ha podido llevar a cabo, obtener resultados y consecuencias como la escasez con la que se ha trabajado el ámbito emocional en el aula a lo largo de su proceso académico. Por eso, la educación emocional merece tener su espacio en el currículum escolar, para poder lograr una educación de calidad y el desarrollo integral de los alumnos.[EN] Given the lack of emotional education in classrooms, the main objective of this work is to make a proposal for a didactic unit to train students without neglecting the emotional sphere. For this, Physical Education sessions were used with students aged 9-10, in which using body expression as a means, emotional competence was developed. The proposal is made up of a six-session didactic sequence, which has been able to be carried out, obtaining results and consequences such as the scarcity with which the emotional field has been worked in the classroom throughout its academic process. For this reason, emotional education deserves to have its place in the school curriculum, in order to achieve a quality education and the integral development of students