Josh-D. S. Davis

Xaminmo / Omnimax / Max Omni / Mad Scientist / Midnight Shadow / Radiation Master

Rename Token Used
Josh 2014
joshdavis
I've had a rename token for years, and finally cashed it in.
jdsdavis was not free (squatter), but joshdavis was.

So, going to generic.livejournal.com, or xaminmo@livejournal.com, now goes to joshdavis.livejournal.com.

In theory, all of my friends, and posts, should be here. Just a rename, not a move.

I'm getting old. :p

Integrative Complexity
Josh 2014
joshdavis
This is a cool term: Integrative Complexity. I stumbled onto in in political research, but it's not specific to politics. I had a hard time defining my specialty. I don't handle well a large number of things, but I can handle one or two things that are very complicated.

REF:
https://en.wikipedia.org/wiki/Integrative_complexity

The reason I don't handle large numbers of things well is because I'm slow to load information into working memory, and when I change gears/topics, it completely flushes what I was working on, rather than loading in some side area.

Geeks call this "loss of state", or a cache miss after context switch.

Research shows it takes, on average, 23.25 minutes to resume an activity after being interrupted. Other studies indicate you lose 20% time to context switching per project, based on an 8 hour day. So, 2 projects get 40% each, but 5 projects get only 4% each.

That seems a little extreme, but it's based on programmers, who also have to maintain a large amount of state.

REFS:
https://insights.sei.cmu.edu/devops/2015/03/addressing-the-detrimental-effects-of-context-switching-with-devops.html
https://www.fastcompany.com/944128/worker-interrupted-cost-task-switching
https://blog.codinghorror.com/the-multi-tasking-myth/
Tags:

Authoritarian Personality
Josh 2014
joshdavis
Authoritarian personality is a state of mind or attitude characterized by belief in absolute obedience or submission to one's own authority, as well as the administration of that belief through the oppression of one's subordinates. It usually applies to individuals who are known or viewed as having an authoritative, strict, or oppressive personality towards subordinates.

After extensive questionnaire research and statistical analysis, Canadian psychologist Bob Altemeyer found in 1981 that only three of the original nine hypothesized components of the model correlated together: authoritarian submission, authoritarian aggression, and conventionalism.

Bob Altemeyer conducted a series of studies on what he labeled right-wing authoritarianism (RWA), and presents the most recent analysis of this personality type. The focus of RWA research is political preferences as measured through surveys, that suggest three tendencies as noted in attitudinal clusters. These are: 1) submission to legitimate authorities; 2) aggression towards sanctioned targeted minority groups; and 3) adherence to values and beliefs perceived as endorsed by followed leadership.

Jost, Glaser, Kruglanski, and Sulloway (2003) have proposed that authoritarianism, RWA and other similar constructs of political conservatism are a form of motivated social cognition. These researchers propose that conservatism has characteristics similar to those of authoritarianism, with resistance to change, and justification for inequality as the core components. In addition, conservative individuals have needs to manage uncertainty and threat with both situational motives (e.g., striving for security and dominance in social hierarchies) and dispositional motives (e.g., terror management and self-esteem).


Adorno, T. W., Frenkel-Brunswik, E., Levinson, D.J., Sanford, R. N. (1950). The Authoritarian Personality. Norton: NY.

Baars, J. & Scheepers, P. (1993). "Theoretical and methodological foundations of the authoritarian personality". Journal of the History of the Behavioral Sciences, 29, pp. 345–353.

Kirscht, JP, & Dillehay, RC. (1967). Dimensions of Authoritarianism: A Review of Research and Theory. University of Kentucky Press: Lexington, TN.

Zillmer, E. A., Harrower, M., Ritzler, B.A., and Archer, R.P. (1995). The Quest for the Nazi Personality: A Psychological Investigation of Nazi War Criminals. LEA Hillside, NJ

Wiggins, J.S. (1980). Personality and Prediction: Principles of Personality Assessment. Addison-Wesley. Reading, Mass.

Kreml, William P. (1977). The Anti-Authoritarian Personality. Oxford ; New York : Pergamon Press.ISBN 978-0-08-021063-6.

Altemeyer, B. (1981). Right-Wing Authoritarianism. University of Manitoba Press. ISBN 978-0-88755-124-6.

Altemeyer, B. (1998). The other "authoritarian personality". Advances in Experimental Social Psychology, 30, 47-91.

Coolens, Breeon (2006). "The Authoritarian Model: Who is He and Why is He Here?". Scandinavian Journal of Modern Psychology. 8(12): 314–27.

Ref: https://en.wikipedia.org/wiki/Authoritarian_personality

Fact
Josh 2014
joshdavis
fact (in law) - The truth about events as opposed to interpretation.
fact [fakt] n. - a thing that is indisputably the case.

The usual test for a statement of fact is verifiability. Scientific facts are verified by repeatable careful observation or measurement.

Tired
Josh 2014
joshdavis
I'm tired. Too late for caffeine.
Also, hungry, but it's not too late for New China Cafe.
Testing out Prime Now today because of some credits.
I think I'm going to be required to go grocery shopping,
but I'm gonna get junk food because YAH! I'M A GROWDUP!
Tags:

Ubiquiti EdgeRouter DHCP death
Josh 2014
joshdavis
On an EdgeRouter, and probably anything with Ubiquiti, and maybe anything using the same config style (Brocade and others have the same command set)....

If you add a static reservation outside of the DHCP server's subnet,
as in, if you typo one octet, or decide to do another subnet just
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http://omnitech.net/news/2017/01/13/2341/

Convert EXT3 to EXT4
Josh 2014
joshdavis
### Change to EXT4 mount mode (OKAY before conversion)
vi /etc/fstab

### Reboot into single user mode
shutdown -r now
LILO: linux S

### Unmount or read-only every filesystem
umount -a
mount -oremount,ro /usr
mount -oremount,ro /

### Convert all ext4 into new metadata
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http://omnitech.net/reference/2017/01/05/convert-ext3-to-ext4/

2008 Davis Days of Christmas
Josh 2014
joshdavis
twelve people sleeping

eleven little smokies

ten timers ticking

nine scrambled eggs

eight funky noses

seven shiny earrings

six teddy bears

FIVE CHRISTMAS TREES

four ornaments

three belly buttons

two burning fires

and a bathtub full of chickpeas!

http://omnitech.net/xaminmo/2017/01/02/2008-davis-days-of-christmas/

HTPC
Josh 2014
joshdavis
Ooof. Our little media computer in the living room was 10 years old. I swapped it out with a NUC5. Technically, the CPU is the same performance, but it's 6 watts instead of 75, and it's spread over 4 cores instead of 2.

In reality, the integrated graphics is double the perf, plus there's 12x hardware acceleration for video and encryption. It should be WAY faster. Also, it's tiny, the size of a box of 250 business cards. It'll pay for itself in 2 years, just on electricity alone, though the decreased frustration from LAG will help too.

There's no DVD/CD/BD drive on it, though I have a USB DVD drive I rarely use. If I really needed to, I could swap the guts for my BD drive I never use.

Our HTPC has been moved from a 225W small PC to a 25W mini-PC. This is equal CPU, slower single thread, double graphics, and 10x video/encryption processing power, for about the cost of a mid-level video card.

Our HTPC was a 2006 Thinkcenter M55, and has been chuggy for some video for years. The real reason for swap out is because it finally lost the CMOS battery. This is annoying, because Windows 10 updates ALL THE TIME, and reboots ALL THE TIME. So, it would always hang at full CPU, full fan, waiting for a keypress.

When I replaced the battery, I found 2 FETs have been cooking a little bit of the motherboard. Searched around, and 3 K-stamp capacitors (they look Panasonicky) are bulged.

I thought I'd inventory it and see if it's worth fixing, or whether it is worth even parting out. Radeon 6570, Core 2 Extreme X6800, 2x 2GB DDR2 DIMMs, LG Blu-Ray Rewriter, and a 128GB M.2 SSD in an adapter. PSU is 255 Watts, and the CPU is rated at 75 Watts. CPU passmark is just over 1800, and video passmark is around 768.

The cheapest quad-core mini-PC i could find was a battle between Gigabyte GB-BXBT-1900 (J1900), and an Intel NUC5PPYH. The N3700 Braswell supports AES acceleration, and overall is just a better tech. Not new and shiny, but really at the sweet spot. The unit has built in IR, USB3, and SD slot vs the BRIX. There's actually a wifi card in there too, but I don't need that. I could pull it and put the SSD there I suppose, but whatever. The Gigabyte was 25% less, but the J1900 BayTrail CPU still has power-state issues in some versions of Linux, and I like USB3.

So, the NUC Gen5 won out. The CPU passmark is just under 1900, and the integrated video passmark is around 1430. Half the perf for a single thread, but equal overall, plus hardware decoding for video is a huge help.

Instead of being an SFF desktop (4" x 12" x 14") with a 75 watt CPU, and a 225W power supply, the NUC is a 3"x5"x5" block with a 6-watt CPU and a 25W power supply.

Amazing what 10 years will do for technology. Also, I just moved the boot drive over, and Windows spent 20 mins applying drivers. All's well I think.

Ref: http://omnitech.net/xaminmo/2016/12/01/htpc/

Dream
Josh 2014
joshdavis
In a lab, there's a gold mine. But, it's not a mine exactly. It's a cylinder with rounded edges, about 18" in diameter, and in length, flat faces up/down, floating about waist height in a room. There's a pedestal under it. If you approach, you see down into the pedestal into an apparently
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http://omnitech.net/xaminmo/2016/10/02/dreamofpixels/

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