Jump To Content

LearnHub



162 Comments

  1. From the discussion Politics of the economy

    Sat, 25 Oct 2008 17:11:39 -0000

    To gain a – even if very simplistic – first idea about what started the economic crisis we are facing right now, have a look at The Subprime Primer

    Vote
    Current Rating
    0
    Rate Up
    Rate Down
    No Votes
  2. From the discussion How to add tests (quizzes) to Powerpoint presentation?

    Mon, 28 Jul 2008 12:15:35 -0000

    Did you try to publish the test, not only sharing it privately?

    Vote
    Current Rating
    0
    Rate Up
    Rate Down
    No Votes
  3. From the discussion How to add tests (quizzes) to Powerpoint presentation?

    Mon, 28 Jul 2008 12:14:52 -0000

    Did you try to publish the test, not only sharing it privately?

    Vote
    Current Rating
    0
    Rate Up
    Rate Down
    No Votes
  4. From the discussion How to add tests (quizzes) to Powerpoint presentation?

    Sat, 26 Jul 2008 16:40:52 -0000

    Don’t know if I understood you correctly, but here is the way you can add a test to a courses curriculum:
    1. Create a course
    2. create lessons, tests, discussions for your course – publish them privately to be shared in a course
    3. go to your course
    4. go to the curriculum-page (second tab, directly after main)
    5. click on “Manage curriculum” – you will be provided with a screen where you can choose from all your content to add to the curriculum of your course.
    6. add all appropriate content
    7. correct the order of the curriculum

    That is it – hopefully ;-)

    Vote
    Current Rating
    0
    Rate Up
    Rate Down
    No Votes
  5. From the discussion Language in Classrooms

    Sat, 26 Jul 2008 16:30:32 -0000

    Most of the courses in German universities are held in the German language, burt there are quite a few universities that provide courses in the English language. There are even quite a few universities that do ALL their teaching and coaching in English, here you have to mention especially the so called “international universities” that provide international MBA-studies.

    Actions
    • 1 Reply
    Vote
    Current Rating
    0
    Rate Up
    Rate Down
    No Votes

    Post Comments

    1. SHANYHOSH saidWed, 06 Aug 2008 14:33:59 -0000

      WHAT WOULD FOREIGN STUDENTS DO IF THEY DONT KNOW GERMAN ..IF THEY WANT TO STUDY IN GERMANY .

      Rating
      0
      Rate Up
      Author
      SHANYHOSH
      SHANYHOSH
      Authority 114
  6. From the discussion Vedic maths tricks

    Mon, 14 Jul 2008 21:34:22 -0000

    You showed me what to look for – after that it was simple.

    Vote
    Current Rating
    0
    Rate Up
    Rate Down
    No Votes
  7. From the discussion Vedic maths tricks

    Mon, 14 Jul 2008 21:19:07 -0000

    Here is the math behind that wonderful trick:

    (10x + y)(10x + 10 – y)=100x2 +100x – 10xy +10xy +10y -y2 = 100x2 +100x + 10y – y2 = 10x * 10(x+1) + (10-y) * y

    Vote
    Current Rating
    0
    Rate Up
    Rate Down
    No Votes
  8. From the discussion Vedic maths tricks

    Mon, 14 Jul 2008 21:01:32 -0000

    Looking forward to seeing your way of doing this!

    Rating
    0
    Rate Up
  9. From the discussion Semicircle in a square

    Mon, 14 Jul 2008 10:02:32 -0000

    Photo 5255

    have a look at this picture – it will explain the idea. The semicircle lies axially symmetrical to one diagonal of the square. From this follows that the length of the square has to be x + x/sqrt(2). With a given length a you now can rather easily figure out x.

    Actions
    • 1 Reply
    Vote
    Current Rating
    0
    Rate Up
    Rate Down
    No Votes

    Post Comments

    1. zwitten saidMon, 14 Jul 2008 19:01:16 -0000

      Ohh! Now I’ve got it. Thank you.

      Actually I assumed that ‘a’ in your answer represents area. So, I replied that way. But it’s the side of a square!

      Rating
      0
      Rate Up
      Author
      zwitten
      zwitten
      Authority 228
  10. From the discussion Vedic maths tricks

    Mon, 14 Jul 2008 09:35:00 -0000

    You only need seconds if you use and automate the use of the binomic formulas:

    (x-y)(x+y) = x2 – y2 and (x+y)2 = x2 + 2xy + y2

    then, e.g. : 83 * 87 = (85-2)(85+2) = (80+5)2 – 22 = (6400+800+25) – 4 = 7221

    automated: take the square of the tens, add 10 time the tens, add 25, subtract the square of difference to the number with the ending five (i.e. 85-83=2), voila.

    1. 83 * 87 = 6400 + 800 + 25 – 4 = 7221
    2. 24 * 26 = 400 + 200 + 25 – 1 = 624
    3. 72 * 78 = 4900 + 700 + 25 – 9 = 5616
    4. 99 * 91 = 8100 + 900 + 25 – 16 = 9009
    5. 65 * 65 = 3600 + 600 + 25 – 0 = 4225
    Actions
    • 3 Replies
    Vote
    Current Rating
    2
    Rate Up
    Rate Down
    4 Total Votes

    Post Comments

    1. zwitten saidMon, 14 Jul 2008 20:42:06 -0000

      sir, one should need more than 5 seconds to calculate by the method you stated. a good X th standard student in India knows this trick. But, i have a trick by which it really takes less than a second to do it! These are some special tricks which you will learn in the subject VEDIC MATHS FOUND in vedas. I’ll tell about vedas afterwards.

      I’m posting this trick separately in this discussion.

      Rating
      0
      Rate Up
      Author
      zwitten
      zwitten
      Authority 228
    2. mitesh137 saidWed, 30 Sep 2009 14:25:38 -0000

      89=72 & 37=27 THEREFORE 7227

      Rating
      1
      Rate Up
      Author
      mitesh137
      mitesh137
      Authority 15
    3. manu1684 saidThu, 22 Oct 2009 02:10:19 -0000

      pls solve 59 multiply by 56 through ur trick

      Rating
      1
      Rate Up
      Author
      manu1684
      manu1684
      Authority 5
  11. From the discussion Semicircle in a square

    Sat, 05 Jul 2008 15:05:10 -0000

    Be x the radius of the maximal semicircle and be a the length of the square (=1 for the unit square), then x + x/sqrt(2) = a

    So for the unit square:

    x = sqrt(2)/(1+sqrt(2)) —> the area of the semicircle of the unit square equals 0.539 square units

    Actions
    • 1 Reply
    Vote
    Current Rating
    0
    Rate Up
    Rate Down
    No Votes

    Post Comments

    1. zwitten saidSun, 13 Jul 2008 13:00:04 -0000

      Dear sir, if x is the radius then how can be the area is x+x/sqrt2. Since x i.e.radius has dimensions of length how can be x+x/sqrt2 is area. It also has dimensions of a length, while dimensions of area are length^2.

      By the way how did you find x?........Plese reply.

      Rating
      0
      Rate Up
      Author
      zwitten
      zwitten
      Authority 228
  12. From the discussion Do you think good-looking people have better career chances?

    Thu, 03 Jul 2008 15:18:15 -0000

    As nearly always: It depends …

    It depends on the meaning of “good-looking”. Beauty lies in the eye of the beholder, as you know. You can’t actually reduce “good-looking” just to physical appearance, the overall impression always integrates the physical appearance with social skills, with “how good you get along with one another” etc.

    We know from research that the first 30 seconds of a first meeting count the most – the word of the “first impression” is more than right here!

    So, if we generalize “good-looking” to “making a good first impression” (with “the look” being a great part of that!) – then yes, good-looking people get a better start!

    You may ponder the question if what is true in relationships between guys and girls perhaps doesn’t count in business-relationships. Aren’t we supposed to listen to reason when it comes to business-relationships?

    I don’t really think so. In the end we are all human, so if there are no preeminent reasons against the better looking person he/she will get the job.

    That said, nobody who got (and kept!) a decent job should be blamed for “getting that job only because of his/her physical assets” – in the long run other personal, social and professional qualities outweigh the looks!

    Vote
    Current Rating
    0
    Rate Up
    Rate Down
    No Votes
  13. From the discussion What's your favorite book, and why?

    Mon, 16 Jun 2008 21:44:19 -0000

    If you love Raymond Chandler, what about Dashiell Hammett? – For me he is the king – black, realistic and dry to the bone…

    Rating
    0
    Rate Up
  14. From the lesson Women, know your limits

    Sat, 24 May 2008 07:13:49 -0000

    Hilarious!

    Vote
    Current Rating
    0
    Rate Up
    Rate Down
    No Votes
  15. From the discussion Issues uploading Presentations?

    Sun, 18 May 2008 17:11:33 -0000

    Hi Alexandro,

    just keep patient ;-)

    The error-message you get is only a very misleading information that the presentation you uploaded isnt rendered yet. Just wait for a few minutes and everything will work smoothly. I uploaded your ppt to learnhub myself and it works wonderfully (after about five minutes wait-time)

    Have a look

    cu

    Peter

    Rating
    0
    Rate Up
  16. From the lesson Photography: ISO

    Tue, 13 May 2008 17:13:21 -0000

    Adam, that is a great lesson!

    For those out there who are deeply interested in available light photography, let me add two ideas I sometimes use to get the best out of my pictures in low-light situations:

    1. Instead of choosing a higher ISO I underexpose my pictures 1 f-stop, up to 2 f-stops in extreme situations. There are ways in using photoshop and the lab-mode to correct the exposure without getting the grain-problem.
    2. Instead of or in addition to idea one you could think of turning your pictures into black and white pictures (normally I do that later in photoshop, not while shooting). The more graphical impression of black and white pictures fits well into e.g. a concert-shooting.
    Vote
    Current Rating
    0
    Rate Up
    Rate Down
    No Votes
  17. From the discussion The ending of Harry Potter and the Deathly Hallows was awful!

    Tue, 13 May 2008 05:41:38 -0000

    Sorry, Adam, that is a misunderstanding, I wasn’t thinking of the meeting of Snape with the Potter-sisters, that is indeed a memory out of the pensieve, i was thinking about the meeting of Snape with Narcissa and her sister when he vows to help her son.

    Actions
    • 1 Reply
    Rating
    0
    Rate Up

    Post Comments

    1. lechuck saidTue, 13 May 2008 14:43:12 -0000

      Ah your right! That was a pretty rare case… if not the only time that ever happened. I still have to say killing off Harry Potter would have to end the book. I couldn’t see it being from any other perspective aside from MAYBE Voldemort’s.

      Rating
      0
      Rate Up
      Author
      lechuck
      lechuck
      Authority 464
  18. From the discussion The ending of Harry Potter and the Deathly Hallows was awful!

    Mon, 12 May 2008 21:49:25 -0000

    There are parts of the books not written in Harrys perspective, e.g. the meeting of Snape with the two sisters, so Oren may have a point here.

    Actions
    • 1 Reply
    Rating
    0
    Rate Up

    Post Comments

    1. lechuck saidMon, 12 May 2008 23:19:34 -0000

      Actually that is. It’s Harry watching the Pensive of Snape’s memory. Harry is in fact standing in the scene watching the memory transpire.

      Rating
      0
      Rate Up
      Author
      lechuck
      lechuck
      Authority 464
  19. From the discussion The ending of Harry Potter and the Deathly Hallows was awful!

    Mon, 12 May 2008 21:42:17 -0000

    @Oren: As I said, I cant see any hint in the book that Dumbledore was gay…

    To the ending: I don’t know if I remember correctly (it is some time ago I read the book) wasn’t it that Harry didn’t kill Voldemort, but Voldemort did so himself?

    I agree with you in that point that normally happy endings are boring and often diminuishing the preceding story – but it wasn’t that way in this book (only my opinion).

    Vote
    Current Rating
    0
    Rate Up
    Rate Down
    No Votes
  20. From the discussion The ending of Harry Potter and the Deathly Hallows was awful!

    Mon, 12 May 2008 21:08:24 -0000

    @Oren: I agree with Adam – I was really content with the overall ending of the Harry Potter series. The book would be even better without the last part with the grown up Potters – as it is my belief that a writer should write til the end of a novel but then stop immediately ;-)

    I really was impressed by the dying and surviving of Harry Potter. – For me this has nothing to do with Christianity, it was simply a very logical construction over all the seven books, very deep and without a flaw – that’s what impressed me. I now believe Rowlings telling she wrote the end first.

    @Malgosia: I wouldn’t mind Dumbledore being gay, but I can’t read that in the book. Dumbledores friendship with Grindelwald shows all signs of the connection of two boys with extraordinary minds, bound together by thirst for knowledge, young ambition and juvenile arrogance – but I cant find any explicit homosexual annotations.

    Actions
    • 1 Reply
    Vote
    Current Rating
    1
    Rate Up
    Rate Down
    1 Total Vote

    Post Comments

    1. Malgosia saidMon, 22 Jun 2009 18:46:36 -0000

      I have no problem with Dumbledore being gay – I just thought throwing that out after the fact, where it had no real relation to the story, was sort of pointless. Still, nothing to do with the actual book and its ending.

      Rating
      1
      Rate Up
      Author
      Malgosia
      Malgosia
      Authority 473