Thermal – Heatsink

Hello,

I would like to learn how to design a heat sink with heatpipe and fins to draw heat away from a very hot electronic ship.

Is there any free simulation software to do design and model the heat transfer cooling process

Thank you very much

Why Dukies underachieve as prosGene Expression

Interesting article in Slate. This shocked me:

Out of all the big schools, NBA teams likely fall harder for Dukies because of their NCAA tournament success. In Stumbling on Wins, economists David J. Berri and Martin B. Schmidt find that players who appear in the Final Four the year they’re drafted get a boost of 12 draft positions. Berri and Schmidt believe that this boost is unwarranted. One of the “statistically significant factors … that lead to less productivity in the NBA,” they write, is “playing for an NCAA champion the year drafted.”

I’ll have to look at the model itself, but this is somewhat surprising if plausible. It makes intuitive sense, but NBA teams don’t normally take the draft lightly and do prep work. On the other hand, as the years go by I’ve become more skeptical about the ability of institutions to squeeze all efficiencies out of any given process (I suspect there’s a principal-agent problem; those who are making the final call are less likely to get fired if they select a “can’t miss” who they think is overrated if that prospect flops than if they get someone who they believe is underrated, and it turns out their assessment was in error).

Personally, I think the similarities between Duke and Indiana during the Bobby Knight years are telling, and Knight was a mentor of Mike Krzyzewski. Both schools seem to produce fewer stars on the professional level in relation to the success of their teams; but I think the group vs. individual dynamic is key. There are differences between the pro and collegiate level, and Duke and Knight’s Indiana teams were able to leverage group level efficiency and precision in collective action to make up for shortfalls in relative individual talent. When a team manages to win many games individual players are perceived to be better than they are. Take individuals out of that context and their more modest talent endowments become obvious. A college team which routinely makes it far in the NCAA tournament can regularly field what might be “role players” at best in the NBA.

NCBI ROFL: Uh, no. Aunt Flo means no ho, bro! | Discoblog

3003650719_0881b46c0aThe receptivity of women to courtship solicitation across the menstrual cycle: a field experiment.

“Research has demonstrated that women’s behaviors toward men or sexual interest are different across the menstrual cycle. However, this effect was only found on verbal interest and the receptivity of women to a courtship solicitation had never been tested before. In a field experiment, 455 (200 with normal cycles and 255 pill-users) 18-25-year-old women were approached by 20-year-old male-confederates who solicited them for their phone number. A survey was administered to the women solicited 1 min later in order to obtain information about the number of days since the onset of their last menses. It was found that women in their fertile phase, but not pill-users, agreed more favorably to the request than women in their luteal phase or in their menstrual phase.”

hot_lady_menstual_cycle

Thanks to John for today’s ROFL!

Photo: flickr/Beau B

Related content:
Discoblog: NCBI ROFL: Bust size and hitchhiking: a field study.
Discoblog: NCBI ROFL: Does this outfit make me look like I want to get laid?
Discoblog: NCBI ROFL: Women’s bust size and men’s courtship solicitation.


Loss of Connectivity Issues

This is our network setup at three hotels. The problem we are having is that once or twice a month we get the call that the internet isn't working for either the guests or the admin. When this happens typically we can't get to one of the three main devices...ie... the Nomadix, or one of the two