66 Matching Annotations
  1. Last 7 days
    1. Cities such as Lubumbashi and Likasi face serious air pollution because of the thousands of trucks that travel to and from the mines throughout the day. Chronic exposure to such dusts can lead to severe lung diseases. Water is unfit for human consumption and agriculture because soil and water in the immediate vicinity of the mines are polluted by discharges of wastewater.
    1. Stannell says due to freezing, a leak occurred in the water pipeline that services the tailings facility, resulting in approximately 850 cubic meters of process water spewing from the pipeline

      cold weather can cause pipe lines the break.

    2. An investigation continues into what led to a large volume of contaminated water being leaked from the Highland Valley Copper Mine near Logan Lake.

      The Highland Valley copper mine in Canada leaked polluted water into near by lake.

  2. May 2019
    1. Codelco is a state-owned Chilean mining company and the world’s largest copper producer. Based on their annual report and USGS statistics, they produced ~10% of the world’s copper in 2015 and own 8% of global reserves. They are also a large producer of greenhouse gas emissions. Last year, Codelco produced 3,2 t CO2e/millions tmf from both indirect and direct effects, and in 2011 it consumed 12% of the total national electricity supply.

      Goddamn they should start recylcling

    2. What can Codelco do, then? In addition to cost cutting, Codelco could consider entering the recycling copper industry, as energy prices are driving “virgin” copper costs up.

      thats good

    3. copper mining significantly contributes to climate change.
    1. Although few in number, the multinational mining companies that are earning billion-dollar profits in Zambia have had a massive impact on its environment and people.
  3. Apr 2019
    1. PBL) isan instructional method in which students lear

      Problem based learning is an instructional method in which students learn through facilitated problem solving. Problem based curricula provide students with guided experience in learning through solving complex, real-world problems. Rating: 9/10

    1. Playing games with my brother taught me that connections can be made with another person through virtual reality. Things like cooperation, shared problem-solving, and communication in gaming can strengthen relationships. Most importantly, gaming taught me that no matter the differences between me and another person, we can find common ground through play.
  4. Mar 2019
    1. problem based learning This gives a brief overview of problem based learning. This is a teaching method in which learners receive an ill structured problem that they continue to define and then solve. This web page serves as an overview but if one were teaching with this approach, more information would be needed than is contained on the typical introductory web page. Rating 3/5

    1. This is better than the problem-based learning page I already posted so I will post this one too. it is easy to read and gives the instructional designer or teacher a quick and better-than-average explanation about problem based learning, which is a method of teaching in which learners form teams and learn through solving real problems. rating 4/5

    1. Teaching problem solving This page is included because some of our theories indicate that problem solving should be taught specifically. This page is a bit unusual; I did not find many others like it. It is rather easy to read and also addresses the differences between novice and expert learners. rating 3/5

  5. Feb 2019
    1. In a 2011 Reddit IAmA, Jennings recalled how in 2004 the Democratic politicians Chuck Schumer and Harry Reid unsuccessfully asked Jennings to run for the United States Senate from Utah. Jennings commented, "That was when I realized the Democratic Party was f@#$ed in '04."[19]
    1. 1. Explore the current situation. Paint a picture in words by including the “presenting problem,” the impact it is having, the consequences of not solving the problem, and the emotions the problem is creating for those involved.

      This step is somewhat similar to the EEC (Evidence/Example Effect Change/Challenge) model, often used with Feedback?

  6. Oct 2018
    1. When compared to more traditional methods where students passively receive information from a teacher, cooperative, problem-based learning has been shown to improve student engagement and retention of classroom material

      Students are thinking and engaging with the material on a deeper level when they work together in a collaborative setting. They can talk out the problems, get feedback from each other, and build on each others ideas to get the answers.

  7. Jul 2018
    1. Additionally, there is work available in most countries for people living outside the US, but only workers in the US and India can withdraw cash. Workers from other countries can only redeem their earnings through Amazon gift cards.
  8. Jun 2018
    1. Basically, all token pitches include a line that goes something like this: "There is a fixed supply of tokens. As demand for the token increases, so must the price." This logic fails to take into account the velocity problem
    1. The first practical problem with velocity is that it’s frequently employed as a catch-all to make the two sides of the equation of exchange balance. It often simply captures the error in our estimation of the other variables in the model.
    1. In this kind of situation one might well ask: why continue to make the 80 per cent of products that only generate 20 per cent of profits? Companies rarely ask these questions, perhaps because to answer them would mean very radical action: to stop doing four-fifths of what you are doing is not a trivial change.

      Relevant on larger scale of global economies.

    2. Certainly, the principle brings home what may be evident anyway: that there is a tragic amount of waste everywhere, in the way that nature operates, in business, in society and in our own lives. If the typical pattern is for 80 per cent of results to come from 20 per cent of inputs, it is necessarily typical too that 80 per cent, the great majority, of inputs are having only a marginal—20 per cent—impact.
    1. "When tasks require high coordination because the work is highly interdependent, having more contributors can increase process losses, reducing the effectiveness of the group below what individual members could optimally accomplish". Having a team too large the overall effectiveness may suffer even when the extra contributors increase the resources. In the end the overall costs from coordination might overwhelm other costs.
    2. While modern systems benefit from larger group size, the serialized process has been found to introduce substantial noise that distorts the collective output of the group. In one significant study of serialized collective intelligence, it was found that the first vote contributed to a serialized voting system can distort the final result by 34%
    1. Remark1.73.IfPandQare total orders andf:P!Qand1:Q!Pare drawn witharrows bending as in Exercise 1.72, we believe thatfis left adjoint to1iff the arrows donot cross. But we have not proved this, mainly because it is difficult to state precisely,and the total order case is not particularly general
    1. At present, merging ontologies that are not developed from a common upper ontology is a largely manual process and therefore time-consuming and expensive.
    1. When users can freely choose tags (creating a folksonomy, as opposed to selecting terms from a controlled vocabulary), the resulting metadata can include homonyms (the same tags used with different meanings) and synonyms (multiple tags for the same concept), which may lead to inappropriate connections between items and inefficient searches for information about a subject.
    2. Tagging systems open to the public are also open to tag spam, in which people apply an excessive number of tags or unrelated tags to an item (such as a YouTube video) in order to attract viewers. This abuse can be mitigated using human or statistical identification of spam items.[48] The number of tags allowed may also be limited to reduce spam.
    1. Promised partnerships with major news media organizations never materialized, except in the case of The Washington Post’s Fix blog, which still occasionally uses the platform to annotate the news.
    2. But the biggest problem with the annotator from Genius’ perspective is that few individuals are using it. After more than two years of development, the Chrome extension has only 12,320 users. It was last updated in June 2016.
    3. But it faced a storm of criticism last year after some writers complained the tool was being used to harass them. The annotator also raised concerns that it could have been used to inject malicious code onto visitors’ computers, though it’s since been tweaked to address that vulnerability.
    1. One concern in the Decred community is that the rising ticket price (about 100 DCR, as of mid-2018) excludes small holders from participating in governance and block validation.
    2. Further, the lack of clear development funding methods in Bitcoin is often seen as problematic. The core network software exists as open source code on Github, but it is difficult for developers to directly monetize their contributions to the codebase. Funding for Bitcoin Core developers was entirely donation driven until 2014.
    3. Bitcoin has no formal governance structure, and decisions to alter the protocol are made entirely off-chain, typically by insiders/early adopters and heads of large mining operations.
    1. Recent studies have indicated that Uber’s U.S. driver churn has sharply increased this year, to rates as high as 96%. Needless to say, it’s hard (and costly) to maintain double-digit growth rates, when only 4% of mission critical, de facto employees stay on the job for more than a year.
    2. In fact, Uber has struggled to achieve market share leadership in many large foreign markets, including China, India, SE Asia and Brazil. Moreover, while network effects do exist within each metro market, the benefits are significantly weakened by extremely low switching costs, which enable drivers and riders to utilize whichever ridesharing service offers the best deal on any given trip.
    1. The Achilles’ heel of Uber and Lyft is their centralized management of pricing. This week's uproar by drivers — and their willingness to join an alternative — shows the failure of that approach. You cannot build a long-term relationship with drivers if you are taking away their ability to set their own pricing. Arcade City will decentralize those decisions to the level of the driver and their customers.
    1. Non-cooperative companies solve this problem by taking up front capital and using that to subsidize one or both sides of the marketplace – guaranteeing fees to musicians and doing lots of marketing to recruit users. Cooperatives lack this up front capital, making it hard to get started.
  9. Nov 2017
  10. Sep 2017
    1. whenever I want to use my tablet it's rarely charged there always wants lots of updates

    1. I have a bunch of junk tags from when I thought tags were separated by spaces; they keep popping up in the autocomplete list -- at the top, no less.

      Sort autocomplete by most-used?

      let me delete tags? (maybe I haven't looked hard enough?)

    2. can't sort my profile by creation date?

    1. projectors refer to “people who find a way out of their difficulties by coming up with novel ideas” (Novak, 2008, p. 3)

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  11. Jul 2017
    1. In short, online reading compre-hension is online research. Second, online reading also becomes tightly integrated with writing as we communicate with others to learn more about the questions we explore and as we communicate our own inter-pretations. A third difference is that new technologies such as browsers, search engines, wikis, blogs, e-mail, and many others are required. Addi-tional skills and strategies are needed to use each of these technologies effectively

      Literacy, in general, is not simply knowing how to read read text. It also extends to know what to do what the information you acquire from reading. Reading also encompasses underatanding. For example, underatanding traffic lights and signs are a type of literacy that not involve text, but they communicate meaning that you need to know how to read and synthesize into action.

  12. Jun 2017
  13. May 2017
  14. Apr 2017
    1. herhetormustbeabletoenterintoanindeterminatesitua-tionanddiscloseorformulateproblemstherein;hemustalsopresenttheproblemsinsuchawayastofacilitatetheirresolu-tionbytheaudienceengagedwithhimintherhetoricalprocess

      Does rhetoric necessarily mean always presenting problems? That seems a bit restrictive, or maybe my idea of problem is restrictive. I would think that presenting something as noble or as having absolutely no problems would also be a rhetorical task.

  15. Mar 2017
    1. In this solution, we used memoization to recursively calculate the solutions for subproblems which we then used to calculate the solutions to larger problems. Alternatively, tabulation could have been used to build up solutions from the bottom up.

      So, from the whole thing I take it that the problem has actually two parts: i.) a pre-processing part in which all paths have been explored (via memoization), and, ii). discover the optimal path to take, given the memoization table.

  16. Jan 2017
    1. Affiliations— memberships, formal and informal, in online communities centeredaround various forms of media, such as Friendster, Facebook, message boards,metagaming, game clans, or MySpace).Expressions— producing new creative forms, such as digital sampling, skinning andmodding, fan videomaking, fan fiction writing, zines, mash-ups).Collaborative Problem-solving— working together in teams, formal and informal,to complete tasks and develop new knowledge (such as through Wikipedia, alternativereality gaming, spoiling).Circulations — Shaping the flow of media (such as podcasting, blogging).

      It is very interesting to see just how applicable those terms are for our everyday life!

    1. If I were to return to university in pursuit of an education degree, for example, I would invariably be required to begin this slackly sojourn with such courses as Introduction to Education 101.

      He's saying that it isn't always necessary to sit through classes. Some classes don't matter.

  17. Dec 2016
  18. Sep 2016
    1. Alejandro Farias, 23, from Brownsville, Tex., a supervisor for a freight company, sees himself simply as Latino. His ancestors came from the United States, Mexico and Portugal. When pressed, he checked “some other race.”

      This is a problem because so many people are not getting recognized and many don't even take the test.

    1. “It’s more complicated than that.” No kidding. You could nail a list of caveats to any sentence in this essay. But the complexity of these problems is no excuse for inaction. It’s an invitation to read more, learn more, come to understand the situation, figure out what you can build, and go build it. That’s why this essay has 400 hyperlinks. It’s meant as a jumping-off point. Jump off it. There’s one overarching caveat. This essay employed the rhetoric of “problem-solving” throughout. I was trained as an engineer; engineers solve problems. But, at least for the next century, the “problem” of climate change will not be “solved” — it can only be “managed”. This is a long game. One more reason to be thinking about tools, infrastructure, and foundations. The next generation has some hard work ahead of them.

      Also a good foot note related with the ones at beginning. A problem solving language doesn't mean to be enchanted by the magic of techno-solutionism. It can be an invitation from a particular point of view to action and dialogue. This seems the case here. Thanks Bret.

  19. May 2016
    1. sudo dpkg-reconfigure keyboard-configuration

      This worked well for me with a Dell Vostro 3550 and Ubuntu Server 14.04.4 virtualised inside VirtualBox (Version 5.0.16 r105871). When you run this command, the shell will present the configurator and the choices this user recommends are valid mostly. By contrast, I chose the Dell SK-8125 as a reasonably close match to the Vostro 3550. I also set the left Alt key to function as the AltGr key and this solved the problem. Now, if I want to type the pipe ( | ) character, I use the key combination

      ALT+~
      

      This is not the most intuitive solution; but it works!

    1. in every community or organization, there are a few individuals or groups whoseuncommon but successful behaviors and strategies have enabled them to find better solutions to problems than their neighbors who face the same challenges and barriersand have access to same resources.
  20. Jan 2016
    1. Ecocide

      Interesting idea. The only thing is that the science is not where we would like it to be. Most of the accusing will need to be done in retrospect. In that case, many will have lost culpability due to insufficient knowledge. I just wonder how this will hold up in a court of law for most practical cases. For some large-scale cases, I can see it working, as long as the effects are enormous.

  21. Dec 2015
    1. Edward R. O'Neill

      • When someone asks for help solving a problem, they've probably already thought about it to the point of frustration.
      • They need a fresh perspective.
      • They may not have a clear idea what the problem is.
      • They may have defined the problem incorrectly.
      • Problem solving often requires periods of mind-wandering -- forgetting about the problem, and letting the mind make free connections.
      • They may be so focused on the problem that they aren't allowing their mind to wander.
      • One way to help them is by "leading them to positive, hopeful, self-focused daydreams about their goals."
  22. Jul 2015
  23. May 2015
    1. some farmers will get water, and others will not, simply based on when their land was first irrigated.

      This is not fair because farmers weren't told before hand, and so some farmers are lucky while others are not. The situation in which the farmers are in is very perilous, and people with the most water will be able to make the most profit. That will mean that there will be a shortage of fruits and vegetables in the states and it is bad.

    2. Taking that water and dividing it up some other way, he says, would be like taking everyone's paycheck, putting it into a pool, and saying: "We're going to divide that up evenly. Even though you went to school as a doctor for eight or 10 years, and you're making a lot more money than the guy who's driving a school bus, let's take all the money and divide it up evenly."

      People with greater education will not be different compared to others when it comes to salary. If one farmer has lots of water because he is responsible and resourceful, while some other farmer has little water because he is lazy, ultimately both will have the same amount of water. It is unfair for resourceful farmers, and thus shows that you do not have to work hard to gather water because everyone will eventually have the same amount of water.

  24. Mar 2015
    1. If things go wrong, do not sweep them aside. Confront the problems, get to the root of the difficulties, and wrestle with these resolutely. Go for long-term success, and do not be deterred by criticisms.
  25. Jan 2014
    1. common appropriation regimes do not give a complete answer to the sustainability of motivation and organization for the truly open, large-scale nonproprietary peer production projects we see on the Internet.

      Towards the end of our last conversation the text following "common appropriation" seemed an interesting place to dive into further for our future discussions.

      I have tagged this annotation with "meta" because it is a comment about our discussion and where to continue it rather than an annotation focused on the content itself.

      In the future I would be interested in exploring the idea of "annotation types" that can be selectively turned on and off, but for now will handle that with ad hoc tags like "meta".