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Luciano Ferrer

Turbulent micro hydropower - 0 views

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    "Imagine you could use any kind of small head difference in a river or canal. The power those drops contain might surprise you. We created a technology that can make use of all these small waterfalls or rapids in a way that's safe for the environment. Gone are the days that communities had to choose between having power or fish to eat. Our robust and fish friendly vortex turbiness will generate energy 24/7 at an incredibly low cost of energy. That way you can have a project with high return on investment that improves the world just that little bit. Now, if you look at a river or canal, you'll notice that it's full of these small cascades, that's how nature builds rivers. We have created a distributed turbine system that can combines a large amount of turbines into one big virtual hydropower powerplant. These virtual hydropower plants can be as large as 10MW in power output. That's the power production of a small city! We can do this because our civil structures are designed to be easy to install, and the electronics and robust power take-offs are designed to keep working with minimal maintenance. The energy produced can be directly connected to your appliances or machinery, and at the same time connected to the national distribution grid, so you can inject the unused power to it, maximizing the revenue through a net billing connection."
Luciano Ferrer

World Poverty - Our World in Data - 0 views

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    "Max Roser (2016) - 'World Poverty'. Published online at OurWorldInData.org. Retrieved from: http://ourworldindata.org/data/growth-and-distribution-of-prosperity/world-poverty/ In the past only a small elite lived a life without poverty. Since the onset of industrialization - and as a consequence of this, economic growth1 - the share of people living in poverty started decreasing and has kept on falling ever since. But as a consequence of falling poverty, the health of the population improved dramatically over the last two centuries, and the population started to grow.2 The growth of the population caused the absolute number of poor people in the world to increase; only recently has the absolute number of people living in poverty started to fall as well. This data entry chronicles the falling poverty over the last centuries."
Luciano Ferrer

De una estadística mal hecha puede deducirse… ¡NADA! | La Ciencia para todos - 0 views

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    "Es lamentable cómo nos tiran estadísticas a la cara en el mundo de la educación y es más lamentable ver cómo las han hecho con los gluteus máximus. Errores más comunes. 1. Dar porcentajes del estilo 88,33% sobre una población que tiene 20 alumnos. En una población de 20 alumnos, cada uno de ellos representa un 5%, por lo tanto, 88,33% no significa nada. En todo caso habría que reducir ese número a un 88% o mejor, a un 90%. Ahora imagina que un alumno se pone enfermo, o que a otro le ponen un profesor particular… pues verás como el porcentaje de aprobados o suspensos aumenta en un 5% sin que en realidad haya pasado nada relevante en el proceso educativo. 2. Decir que tu porcentaje de aprobados está "lejos" de la media Mirad esta gráfica de la Wikipedia Normal Distribution PDF Representa distintas distribuciones de datos. En la azul la media es cero y los datos están muy agrupados. En la roja la media también es cero pero los datos ya no están tan agrupados. En la marrón los datos están muy dispersos. ¿Cómo saber si x= -1 está muy "lejos" de la media? Sólo con el valor de la media es imposible. En la población marrón, el valor -1 es bastante próximo a la media, en cambio en la azul es estar bastante alejado de la media, en comparación con el resto de la población. Así que tener una distancia de 10% en un valor de aprobados o suspensos puede significar mucho o poco dependiendo de cómo es la distribución de la población de estudiantes. Eso si la distribución tiene esta forma, que llamamos "normal", por ser bastante común en multitud de grupos de datos. Pero, y si es una distribución multimodal, si en realidad hay varios grupos bastante diferentes formando nuestra población, de forma que en realidad la curva tiene varios máximos (editada de aquí sólo para ilustrar este asunto). Si alguien en esta población tiene un -1, te puede parecer que está muy lejos de la media que andará por 1, pero en real
Luciano Ferrer

Sufficiency: Moving beyond the gospel of eco-efficiency | Friends of the Earth Europe - 0 views

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    "To revert the current ecological overshoot and build a sustainable society, we have to collectively engage in changing our economic model. "Sufficiency: moving beyond the gospel of eco-efficiency" suggests introducing hard limitations to unsustainable trends-in particular to overconsumption-and putting emphasis on distributional justice. Seven chapters written by sustainability and economics experts plus a foreword by Janez Potočnik (Co-chair of the International Resource Panel and former European Commissioner for the Environment) shed light on different angles of sufficiency and formulate concrete recommendations to EU policy makers. The booklet ends with a discussion of several eco-social policies that can start the transition towards an "economics of enough". Many new ideas for an economic paradigm shift have been developed and discussed at the academic and grassroots levels in recent years. The aim of this booklet is to build on a rich body of knowledge and bring these ideas to the attention of engaged citizens and policy makers in order to advance the debate on how to implement sufficiency."
Luciano Ferrer

Pervasive human-driven decline of life on Earth points to the need for transformative c... - 0 views

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    "The time is now. For decades, scientists have been raising calls for societal changes that will reduce our impacts on nature. Though much conservation has occurred, our natural environment continues to decline under the weight of our consumption. Humanity depends directly on the output of nature; thus, this decline will affect us, just as it does the other species with which we share this world. Díaz et al. review the findings of the largest assessment of the state of nature conducted as of yet. They report that the state of nature, and the state of the equitable distribution of nature's support, is in serious decline. Only immediate transformation of global business-as-usual economies and operations will sustain nature as we know it, and us, into the future."
Luciano Ferrer

EterTICs GNU/Linux - 0 views

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    "100% Software Libre. Basada en Devuan GNU/Linux, con repositorio para trabajar con Kernel-Libre. 100% Latinoamericana. Desarrollada en América Latina pensando en la radios comunitarias de la región. 100% para Radios. Incluye todos los programas necesarios para que una emisora comunitaria se libere sin perder prestaciones."
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