18 Matching Annotations
  1. Nov 2023
    1. In a scenario that hits global net zero emissions by 2050, declines in demand are sufficiently steep that no new long lead-time conventional oil and gas projects are required. Some existing production would even need to be shut in. In 2040, more than 7 million barrels per day of oil production is pushed out of operation before the end of its technical lifetime in a 1.5 °C scenario.
      • for: stats - oil and gas industry - steep drop in production

      • stats - oil and gas industry - steep drop in production

        • no new fields can be developed to meet a 1.5 Deg C scenario
        • any new developments face the certain risk of being a stranded asset
        • by 2040, 7 million less barrels of oil are produced each day to meet a 1.5 Deg C scenario
    2. if governments deliver in full on their national energy and climate pledges, then oil and gas demand would be 45% below today's level by 2050 and the temperature rise could be limited to 1.7 °C. If governments successfully pursue a 1.5 °C trajectory, and emissions from the global energy sector reach net zero by mid-century, oil and gas use would fall by 75% to 2050.
      • for: Nationally Determined Contributions insufficient to meet 1.5 Deg C, NDC insufficient to meet 1.5 Deg C

      • stats: climate change - NDC

        • current NDCs
          • 45% reduction in fossil fuel usage by 2050
        • NDCs to meet 1.5 Deg C
          • 75% reduction in fossil fuel usage by 2050
  2. Oct 2023
  3. Jun 2023
    1. There are now about 22,000 contributorsto the site, which charges between $1 and $5 per basic image

      This reminds me of the article "Wikipedia and the Death of an Expert" how there are also so many volunteers running the wikipedia page. I inserted an article that mentions how many active editors there are on wikipedia so we can really compare the similarities in contributors.

  4. May 2022
    1. "I didn't fully understand it at the time, but throughout my time as a freshman at Boston College I've realized that I have the power to alter myself for the better and broaden my perspective on life. For most of my high school experience, I was holding to antiquated thoughts that had an impact on the majority of my daily interactions. Throughout my life, growing up as a single child has affected the way am in social interactions. This was evident in high school class discussions, as I did not yet have the confidence to be talkative and participate even up until the spring term of my senior year."

  5. Nov 2021
  6. Jun 2018
    1. The preservation of meets and joins, and hence whether a monotone map sustainsgenerative effects, is tightly related to the concept of a Galois connection, or moregenerally an adjunction.
    2. In his work on generative effects, Adam restricts his attention to maps that preservemeets, even while they do not preserve joins. The preservation of meets implies that themapbehaves well when restricting to a subsystem, even if it can throw up surpriseswhen joining systems
    3. n [Ada17], Adam thinks of monotone maps as observations. A monotone map:P!Qis a phenomenon ofPas observed byQ. He defines generative effects of such a mapto be its failure to preserve joins (or more generally, for categories, its failure topreserve colimits)
    4. Example1.61.Consider the two-element setPfp;q;rgwith the discrete ordering.The setAfp;qgdoes not have a join inPbecause ifxwas a join, we would needpxandqx, and there is no such elementx.Example1.62.In any posetP, we havep_pp^pp.Example1.63.In a power set, the meet of a collection of subsets is their intersection,while the join is their union. This justifies the terminology.Example1.64.In a total order, the meet of a set is its infimum, while the join of a set isits supremum.Exercise1.65.Recall the division ordering onNfrom Example 1.29: we say thatnmifndivides perfectly intom. What is the meet of two numbers in this poset? Whatabout the join?

      These are all great examples. I htink 1.65 is gcd and lcm.

  7. Mar 2017
  8. Jan 2017