Posts by Brent Jackson

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  • Legal Beagle: Voting in an STV election, in reply to Steve Todd,

    In fact, I consider NZ STV is about as far as we can go in the refinement-manageability-public understanding trade-off in the single transferable vote

    The one change I would like to see is a mechanism to reduce invalid ballots, which would also allow a person to rank the candidates they want at the top, and the ones they don’t want at the bottom, without requiring them to rank every candidate.

    Something like, upon reaching 2 or more candidates with the same ranking, the remaining vote should be split evenly between them. So if someone mistakenly writes two 14s and no 16, then the votes split to those ranked 14. If one doesn't require it, it goes to the other, and if neither require it, it continues on to 15.

    In addition, any unranked candidates are assumed to have the lowest ranking that has not been assigned to any candidate.

    For example : With 40 candidates, and 1,2,3, 39, and 40 assigned on the voting paper, then the other 35 candidates are given a ranking of 38. If 1,2,3 no longer require all of the vote, then the remainder is spread over all the other candidates, except those that were ranked 39 and 40.

    Auckland • Since Nov 2006 • 561 posts Report Reply

  • Access: How many agencies does it take…,

    If a person's life depends on a ventilator, then it MUST have a battery back-up. It's not the car-crash or the electricity company that is responsible for the death, it is the DHB for supplying a life support device that was not fit for purpose.

    Auckland • Since Nov 2006 • 561 posts Report Reply

  • Speaker: Confessions of an Uber Driver…,

    Looks like the gummint is finally going to do something. Threats only at this point, but that is a lot more than what they've done to date.

    Auckland • Since Nov 2006 • 561 posts Report Reply

  • Speaker: Are we seeing the end of MSM,…,

    I notice the caption under the Herald photo of a person leaping off the bonnet of a car, has changed from "A teenaged driver leaps from the roof of his drowned car" to "A passenger returns from a crashed vehicle after retrieving belongings through its sunroof".

    I guess they eventually got around to reading the photographer's copy, rather than just making shit up.

    Auckland • Since Nov 2006 • 561 posts Report Reply

  • Speaker: Colouring Girl,

    My mother used to hand colour black and white photos. I remember seeing a half finished one as a kid, and marvelling at how realistic the colours looked.

    It's amazing that Nola Mann worked through to 1998. I'd've expected that the job would've demised pretty rapidly around the mid 70's when colour photography became mainstream.

    Auckland • Since Nov 2006 • 561 posts Report Reply

  • Hard News: Understanding the Audiences, in reply to James Littlewood*,

    Add "don't have access to broadband" to your "can't afford tech"

    Auckland • Since Nov 2006 • 561 posts Report Reply

  • Southerly: A Tale of Two Iceblocks: Part…, in reply to Moz,

    Thanks for that Moz. According to that we should have the panel at 33 degrees for maximum annual solar input with a fixed panel. But as you say that is not what we should be trying to maximise. What we want is sufficient hot water all summer, extended as far as we can for spring and autumn. Based on when we currently turn the power supply on (May to October) it appears that we need about 5kwh/m2/day, so setting to the winter tilt angle won't give us sufficient heating all summer. So, eye-balling the Adjusting the tilt four times a year table, probably 45 degrees would maximise electricity savings.

    However, this may be overly simplistic, as the turning on of the power booster is usually the result of 4 cloudy days in a row, which will occur much more often in the seasons other than summer.

    Especially for people who are switching from off peak resistive systems to on-peak boost (as in Australia and very probably NZ) because the boost cuts in in the evening when it’s clear the solar has not got the water hot enough.

    We don't have peak and off-peak power charges, and the booster is not timed, so as we mainly shower in the morning, the booster will heat the cold water being added to the tank, which would be unnecessary on a sunny day, as the sun itself can achieve it by the end of the day.

    But better to spend a little bit more than to suffer luke-warm showers in the colder months.

    Auckland • Since Nov 2006 • 561 posts Report Reply

  • Southerly: A Tale of Two Iceblocks: Part…,

    When we had our solar hot water installed (an Edwards LX305 in 2004), I asked about increasing the angle of the panels, and was shown a convincing graph of the efficiency based on angle, and basically the efficiency does not fall off all that rapidly. Basically, if your panel is facing within 30degrees of north, and is tilted between 15 and 50 degrees you'll be getting over 95% of the optimal annual solar input for a fixed panel.

    Our return on investment calculation at the time, was that the system would never pay for itself (we'd make more money by investing the funds, and paying more for our electricity). We installed it anyway because we felt it was a good thing to do. As it turns out, investment returns have dropped, and electricity prices have increased, so it was probably a good investment. We turn the mains feed to the cylinder off at the start of November, and turn it back on at the end of April, so basically have free hot water all summer. Of course it is still helping the rest of the year, so our power bill is less than similar families (2 teenage children). We use 14kw/day around this time of year (electric blankets and heaters), and about 8kw/day in summer (really should get a more efficient fridge).

    When our dishwasher was installed, I asked for the plumber to connect the hot pipe to it, but he refused, saying it would invalidate the warranty. Of course the dish-washer is out of warranty now, but I don't think the $200 (or more) it'd cost to get it changed over now would be recouped, but it does annoy me that we have to unnecessarily heat water to run it in summer.

    Auckland • Since Nov 2006 • 561 posts Report Reply

  • Southerly: A Tale of Two Iceblocks: Part…, in reply to David Haywood,

    If everyone did then we could solve practically all of society’s problems.

    Imagine

    Auckland • Since Nov 2006 • 561 posts Report Reply

  • Southerly: A Tale of Two Iceblocks: Part…,

    Alfie wrote:

    … surely the Chinese block travelling thousands of kilometres to market whilst remaining frozen also increases its total emissions

    Yes, of course. But as David keeps re-iterating in his comments, the details of the ice-block are irrelevant. The ice-block is merely an example, to show how taxing carbon for goods manufactured in NZ will send the wrong price signal to the market, so it would favour the worse outcome for the world.

    Edit: I'd just like to re-assure you, David, that at least one person out here understands what you did, and is pleased to have been educated on why taxing carbon is a tricky problem.

    Auckland • Since Nov 2006 • 561 posts Report Reply

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