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Category Archives: Alex Steffen

Alex Steffen on The Climate Strike

Posted on 17 September 2019 by ecoquant

Excerpted from The Nearly Now at Medium, by Alex Steffen. “You’re right to strike; you’re right to march; you’re right to feel your fear and rage and longing for a better world. You are the victims of a terrible intergenerational … Continue reading →

Posted in #climatestrike, #sunrise, #youthvgov, Alex Steffen, American Solar Energy Society, an ignorant American public, an uncaring American public, Arctic amplification, Boston Ethical Society, bridge to somewhere, carbon dioxide, climate disruption, climate justice, climate mitigation, ClimateAdam, Ecology Action, global blinding, global warming, global weirding, Greta Thunberg, insurance, Jennifer Francis, Juliana v United States, life cycle sustainability analysis, On being Carbon Dioxide, photovoltaics, science, solar democracy, solar domination, solar energy, solar power, solar revolution, sustainability, sustainable landscaping, wind energy, wind power, zero carbon | Leave a comment
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  • Kalman filtering and smoothing; dynamic linear models



    Also, see datasets and R examples to accompany this excellent text.





    I have used dlm almost exclusively, except when extreme efficiency was required. Since Jouni Helske's KFAS was rewritten, though, I'm increasingly drawn to it, because the noise sources it supports are more diverse than dlm's. KFAS uses the notation and approaches of Durbin, Koopman, and Harvey.

    ``The real problem is that programmers have spent far too much time worrying about efficiency in the wrong places and at the wrong times; premature optimization is the root of all evil (or at least most of it) in programming.''
    Professor Donald Knuth, 1974
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