Air Quality

https://airnow.gov/

August 20, 2018 · 1 min · birdchan

Potato paradox

You have 100 lb of potatoes, which are 99 percent water by weight. You let them dehydrate until they’re 98 percent water. How much do they weigh now? ??? So… There is 1 lb of solid, 99 lb of water to begin with. Now water becomes 98% of the whole thing… ??? Ref: https://en.wikipedia.org/wiki/Potato_paradox

August 13, 2018 · 1 min · birdchan

How the Horizon Air theft and crash unfolded

https://www.seattletimes.com/seattle-news/we-were-all-screaming-oh-my-god%e2%80%8a-how-the-horizon-air-theft-and-crash-unfolded/ [soundcloud url=“https://api.soundcloud.com/tracks/484218441" params=“color=ff5500” width=“100%” height=“166” iframe=“true” /]

August 13, 2018 · 1 min · birdchan

Whiteboard Interviews

Engineering whiteboard interviews: yay or nay? https://www.keyvalues.com/blog/engineering-whiteboard-interviews-yay-or-nay Bad at whiteboard puzzles? You can still get a programming job https://codewithoutrules.com/2018/07/29/getting-a-job-without-whiteboard-puzzles/ A list of 500+ companies that don’t do whiteboard puzzles https://airtable.com/shr5TdnpVYVTpeRrN/tbluCbToxQ2knSLhh

August 9, 2018 · 1 min · birdchan

Beef

https://visual.ly/community/infographic/food/cuts-beef

August 8, 2018 · 1 min · birdchan

杨晓川 Chino Yang : Bayarea Pre-style

July 31, 2018 · 0 min · birdchan

Earthquake Safety Checklist

https://www.fema.gov/media-library-data/1510153676317-82124ab3b0a31ea239f60acc8d46c2ba/FEMA_B-526_Earthquake_Safety_Checklist_110217_508.pdf

July 27, 2018 · 1 min · birdchan

Organic food is better?

Is organic food really better? No pesticide used on organic food? You sure? Knowing that you are paying your premium for that, we should find out exactly how much organic food is better than conventional food. Modern Propaganda https://www.forbes.com/sites/stevensavage/2016/03/19/why-i-dont-buy-organic-and-why-you-might-want-to-either/#4188a10c69c3

July 21, 2018 · 1 min · birdchan

Dijkstra's algorithm

My version in python. The code is specific to how g, the graph matrix is defined. Here is a good explanation to why we need to get the vertex with min edge in each iteration. [code] def graphDistances(g, s): INFINITY = 9999999999 size = len(g) dist = [INFINITY] * size prev = [None] * size unvisited = set(range(size)) dist[s] = 0 while unvisited: u = findVertexWithMinDist(unvisited, dist) unvisited.remove(u) for v, edge_weight in enumerate(g[u]): if edge_weight == -1: continue my_dist = dist[u] + edge_weight if my_dist < dist[v]: dist[v] = my_dist prev[v] = u ...

July 15, 2018 · 1 min · birdchan

The nightmare videos of children's YouTube

https://www.ted.com/talks/james_bridle_the_nightmare_videos_of_childrens_youtube_and_what_s_wrong_with_the_internet_today?utm_source=newsletter_daily&utm_campaign=daily&utm_medium=email&utm_content=image__2018-06-22

July 11, 2018 · 1 min · birdchan