342 Matching Annotations
  1. Sep 2020
    1. Example 13.1 Estimate the grit channel length necessary if the maximum depth of flow in the channel is likely to be 1.7 m. Assume grit settling velocity = 10 cm/s, and horizontal flow velocity = 30 cm/s. Use scale-up factor = 5.0.

      I think the answer should be 25.5 m. Typo.

  2. Aug 2020
    1. 1000 soft house less than R40 no air sealing needs 7 sq feet of vent 3-1/2 on the roof that’s 504 sq in that’s 10 of those square flat vents or 260 inches of ridge vent. Show less Read more 1 year ago (edited) 2

      1000 soft => 1000 sq ft ?

  3. Jul 2020
  4. Jun 2020
  5. May 2020
    1. foo?.bar!.baz;

      I think they meant:


      because I think this is supposed to illustrate:

      Users who want to revert to the old behavior can add explicit parentheses around the left side of the ! operator.

  6. Apr 2020
    1. let page = document.getElementById('buttonDiv');

      duplication: As a result of duplication, they somehow ended with this line being present here but not in the downloadable file which is supposed to have the same contents as the snippet shown here.

      They should have updated their static page generation script/process so that their main document referenced options.js and their generator literally included the contents of the referenced file inline. Then there is no chance of the contents of the inline snippet and downloaded snippet diverging and not matching.

      Evidently, however, the contents of each are managed independently (in other words, there is duplication), easily leading to the contents diverging, as they did.

  7. Feb 2020
    1. as

      "as" is not necessary here. This is very minor mistake but since you are doing excellent job I am going to point out any mistake I find to contribute the project towards perfection.

    1. data is collected

      data that is collected, or data collected

    2. and applications to forecasting and estimation of dynamic causal effects.

      and its applications to forecasting and estimation of dynamic causal effects.

      The word "its" is necessary since it refers to the noun econometric techniques.

  8. Jan 2020
  9. Dec 2019
  10. Nov 2019
    1. ref={props.innerRef}

      Shouldn't this be ref={ref}? So that ref is actually used and the ref setter function in RefForm that sets refs actually gets passed the ref from the input?

  11. Sep 2019
  12. Aug 2019
    1. whereCdk

      you haven't defined \(\Delta\) in the statement of the theorem

  13. Jul 2019
    1. Don’t stop there, and get creative!

      Unnecessary comma. Maybe this would be better:

      Don't stop there. Get creative!

    2. Low calorie

      Should be Low-calorie

    3. ,

      This comma is unnecessary.

    4. --

      This should be a proper em dash.

  14. Jun 2019
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  19. Jan 2019
  20. Dec 2018
  21. Nov 2018
    1. in principle each other

      in principle cancel each other

    1. At left, an image with surface depth cues at 100% and interior depth cues at 50%. The image on the right has surface depth cues at 100% and interior depth cues at 50%.

      According to the description both images have surface depth cues at 100% and interior depth cues at 50%. It's clearly a typo.

  22. Oct 2018
    1. the autoposts from Twitter to Facebook were

      a hanging thought? I feel like I do this on my site all too often...

  23. Sep 2018
    1. numbers


    2. the line

      "points on a line"

    3. “related”.

      Should these quotes be `` (double backtick) '' (double apostraphe)?

    4. collection




  24. Aug 2018
    1. π

      This \(\pi\) should be mix as at the end of the sentence

  25. Jul 2018
    1. they are using what proposition A.1 is saying, which has a typo, it should be \(\frac{\Delta_k (t_j - t_{j-1})}{4} \exp (-t_{j-1} \Delta^2/2)\)

    2. max1≤k≤MMXj=1∆ktj4exp(−tj−1∆2k/2)−1∆k

      The \(\sum_{j=1}^M\) should be inside the bracket. The \(-\frac{1}{\Delta_k}\) is not part of the sum.

    3. t

      This numerator should be \(t_j - t_{j-1}\)

    4. 1

      A \(\Delta\) is missing here

  26. Jun 2018
    1. x3yif and only ifdxù3e y

      Maybe x and y (at least y) should be said to be natural numbers here, but then again it is fairly obvious from the context.

    2. Writedzeforthe smallest natural number greater thanz2R, and writebzcfor the largest naturalnumber smaller thanz2R, e

      I think both of these definitions should include "or equal to", especially given the immediate following example of x <= 3y if and only if ...

    3. s

      Not really a typo, but slightly confusing since s is also used for a different funciton in the same example in the following paragraph.

  27. May 2018
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  31. Dec 2017