I just realized that I have a thermostat. Cool!
Archive for the ‘Uncategorized’ Category
The (My) Office
Friday, December 9th, 2011
Steve Jobs
Wednesday, October 5th, 20114 labs and much software
Wednesday, May 25th, 2011I have 4 computer labs to set up for the coming semester. I’ll be busy this summer.
Maximum Subsequence Sum
Wednesday, March 9th, 2011Algorithms from Weiss
- maxSubSum1
- N = 5,000
- Sum[Sum[Sum[1, {k, i, j}], {j, i, 4999}], {i, 0, 4999}]
- T(N) ≈ 83337962547 ns
- 2.08458 x 1010
- 10,000
- tbd
- 20,000
- tbd
- 50,000
- tbd
- N = 5,000
- maxSubSum2
- N = 5,000
- Sum[Sum[1, {j, i, 4999}], {i, 0, 4999}]
- T(N) ≈ 863884305 ns
- N = 5,000
- maxSubSum3
- maxSubSum4
Legend:
- function/algorithm
- input size
- Mathematica form
- Run-time
- Complexity (no. of operations)
- input size
:)
Sunday, March 6th, 2011I’m just saying.
Photo Hunt – Esperanza Spalding
Saturday, March 5th, 2011
I’m looking for this full set of photos from this Esperanza Spalding photo-shoot. I want the largest available images.
The filename for the few pictures that I’ve seen have the form 240EsperanzaSpaldingCourtesyofMontunoProductionsPhotoBySandrineLee. Most images that I’ve seen were without spaces; a few separated the terms.
Math Bits
Thursday, March 3rd, 2011Formulae
Exponents
xaxb
Logarithms
loga
Series
Mathematica form: Sum[i, {i, 1, n}]
Mathematica form: Sum[i^2, {i, 1, n}]
Mathematica form: Sum[i^2, {i, 1, n}]
Mathematica form:
Examples
Exponents
Logarithms
Series
Power Deficient Laptops for the Masses
Sunday, February 6th, 2011What are the chances that I, little earth dude would run into two three laptops with unchargeable batteries and power supplies that aren’t strong enough to power the laptop which it is intended to power? This occured with three Toshiba laptops of three people.
If by chance there was only a problem with the battery, it would be reasonable that the battery could be replaced. These laptops are actually crippled beyond the laptops PSU. There seems to be a short in the on board portion of the power supply.
I don’t do electrical work for others as I lack the requisite certification, training and comprehension. I’m not saying that Toshiba is a bad company; they just make crappy laptops. In fact, many companies that are known for production of consumer electronics other than computers and later decided to start a computer division make garbage worthy but otherwise beautiful machines i.e. Sony.
The thing about these companies is that their computer divisions are not the producers of their principle products. One might suggest that since these electronics companies can produce electronics like televisions and stereos of decent quality they should be able to reasonably produce something that has been around as long as a computer. This may be a somewhat logical resolve when considering the production of a desktop; the complexity of a laptop is many times greater than the desktop. Besides what may be obvious concerns like space and heat issues are compounded by the problem of power regulation. In a truly mobile laptop it is desireable to have hardware that has a good balance between low power consumption and performance. The problem of laptop development is further pronounced by the lack of standardization of laptop hardware. There are some standards like that used in storage devices and RAM, the form of external connectors like VGA, Ethernet and USB ports. The major issues of standardization in laptops come in the forms of the form factor of the motherboard, the connection to the display and guess what… the on-board power system.
Wandering Intent
Saturday, January 22nd, 2011I want to hop on 50, drive ~3000 miles, then board a boat back home. I miss that place.