Eric Busboom

Testosterone and Cognitive Function

Finding one article on pre-natal exposure to testosterone and giftedness, I figured that this was probably only one paper showing a tentative connection. Then I found all of the other papers.

No connection with Testosterone: http://tc.engr.wisc.edu/steuber/SophJrSr/papers/2008/HonorableLohrentz.pdf

Related to the co-twin study: JAMA and Archives Journals (2007, December 4). Males With A Female Twin May Be At Higher Risk For Anorexia Nervosa.

Economic Notes On Manufacturing

The US has been shedding manufacturing jobs since about 2000. ( Not 1970 as many people believe . ) 

 

But, a capital spending report for the same period shows that capital spending has not dropped:

 

Furthermore, manufacturing revenue has been climbing over the period, but income after tax has stayed fairly flat. 

So, if the manufacturing companies are spending less on people, the same amount on machines but not getting more income, where is the additional expense? They could be spending more on raw materials, but the other possibility is that they are spending more on services, in the form of outsourced labor. For instance, instead of hiring janitors directly, they hire a janitorial services firm. In this case, the same number of people are being hired, but the job is shifted from “manufacturing” to “services.” I’m not sure about the details of this effect, but it does mean that the decline in manufacturing jobs may not be as great as it appears. 

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Positive commands

Here’s a good example of how to turn a negative into a positive. Much more poetic than ” keep out”.

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Kid Powered Teacup

This teacup in the children’s playground in Golden Gate Park accelerates when you sit in it.

I’m not sure how it works, but I suspect it has a screw, a ratchet and a spring to lift it up, but it doesn’t obviously screw downward under weight.

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Happy feet

Finally got my Sanuks.

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Guess which mask is my son’s

Testing Embedded Google Video

I’m testing embedded Google Video, from our new Google Apps account.

Untitled

Another attempt at casting

Getting the sand ready to cast an aluminum part for the kitchen.

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SoCal Surf Towns Ranked

Here is a list of the top surf towns in Southern California. The list is computed by taking the number of web searches for the area name plus “surf shop” and dividing by the population of the area. All percentages are expressed relative to the top result. The area names come from Zillow.com, and are the named areas that are on the coast or adjacent to an area on the coast. We only considered areas between Tijuana and Santa Barbara.

Del Mar 100.00%
Malibu 97.73%
Ocean Beach 53.04%
Mission Beach 34.70%
Venice 25.91%
Laguna Beach 22.73%
Dana Point 20.39%
Solana Beach 18.25%
Pacific Beach 18.21%
Hermosa Beach 18.15%
Santa Monica 18.09%
La Jolla 17.61%
Encinitas 16.01%
San Clemente 15.97%
Manhattan Beach 12.97%
Santa Barbara 12.36%
Ventura 11.81%
Huntington Beach 11.09%
Newport Beach 9.45%
Coronado 8.64%
Carpinteria 8.04%
Seal Beach 7.54%
Long Beach 5.07%
Oceanside 4.83%
Carlsbad 4.55%
Imperial Beach 4.46%
San Diego 3.72%
Redondo Beach 3.43%
Orange 2.34%
San Pedro 1.95%
Vista 1.54%
Costa Mesa 0.62%
Oxnard 0.31%