godber

Cool, thanks for the feedback.

Following a link in VR breaks the user our of the browsers VR mode to show the "2D" browser window. It's time to improve this behavior.

All my disks have 5% space reserved for root by default. This reserve can be changed at will.

The "Plain Language Summary" is as follows:

"Frozen water is a very strong heat conductor compared to typical Martian regolith. As a result, near-surface ice measurably influences seasonal surface temperature trends, and the depth of the H2O table controls the amplitude of this effect. We leverage this influence on orbital temperature observations using a numerical heat transfer model to derive regional and local maps of the ice depth on Mars, at much higher spatial resolution than previously available. We show that water ice is present sometimes just a few cm below the surface, at locations where future landing is realistic, under mobile material that could easily be moved around. This ice could be exploited on-site for drinking water, breathable oxygen, etc., at a much lower cost than if brought from Earth."

The old joke of "We find water on Mars every 18 months" is only true when observing though the lens of popular media and newspapers. The references section of any of these publications are clear evidence that no one has forgotten the earlier evidence.

The paywalled paper is here:

https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2019GL08...

Available through various institutions for free. You'll find the authors to be established Mars scientists who've been weighing in on the water/ice (and other things) discussions over the years.

One benefit to ES is scale. Elasticsearch can scale to at least a couple trillion records (on the order of 1.5 PB) if you spread your data out across enough hardware. You can then search those records in seconds (for simple queries). I'm not sure Mongo can scale quite that far, it was given up on before I started this work. Not saying it can't, just saying others had more success scaling ES and haven't really hit its limits. Bear in mind datasets span multiple clusters and are searches are merged using cross cluster search in these larger cases. Not likely to be an apples to apples comparison.

I feel the same way about California Prop 65 warnings. Any overused warning will result in warning fatigue. We'll just blindly click that OK button or lick that pewter candle stick.

Look, it's even a real thing: https://en.wikipedia.org/wiki/Alarm_fatigue

One interesting use case for FPGAs is where hardware qualification is very expensive, for instance for use in space. If a given FPGA is already space qualified, you just need to load new code onto it and you can skip the expensive qualification step for your new application. You can also consolidate functionality of multiple chips into that one qualified FPGA.

The #1 reason here is one of the most important. You have to be able to draw your landing ellipse in a spot that you can be confident the rover can safely land. Technological advances have shrunk the size of this ellipse considerably, check this image from JPL for comparison of past missions:

https://mars.jpl.nasa.gov/msl/multimedia/images/?ImageID=439...

Another reason is the decisions are made ... ok, perhaps only influenced by committee ... you have to satisfy at least a significant subset of the Mars research community with your site selection. See this site for public information on the process:

https://marsnext.jpl.nasa.gov/

There are a number of other hard engineering concerns, like limits on latitude based on heating (or solar power) requirements, e.g. if you go to far north or south you have to use all your available power to heat the spacecraft and won't have any left to do science. I don't remember the exact values, but I think existing technology puts you in a +/- 60 degrees from the equator. I think it was even less than that, but I don't recall exactly.

Gee, there is almost certainly nothing the author could do about this tragic waste of his time except volunteer to give a talk and

* Provide a proper description to the organizers * Ask the organizers that they skip pizza that night or handle the logistics himself * Prepare properly for the presentation * Be considerate of your audience when presenting * Ask that the organizers tone down the commercials * oh, well, I guess you're hopeless on this one

Seriously, meetup groups tend to be community oriented and driven and members almost always have a voice.

Or just don't go, that's really fine, they are definitely not the most time efficient way to learn to program.

I think what you are experiencing in Spain is kakonomics, a preference for low quality pay-offs.

http://www.bbc.com/news/business-37108240

The paper contains the following link to the supplementary material which contains BOM, PCB drawings and some code:

https://dspace.mit.edu/handle/1721.1/102942

Edit: spelling and a little more info.

Perhaps Emily was thinking more about things in the distant future. There is already a Europa mission under development:

http://www.nasa.gov/press-release/nasa-s-europa-mission-begi...

We should be there within the next 10 to 15 years.

Airport/security full body scanners would not catch something like this. They only image through clothing for the most part. They only image through the top layers of skin. See figure 4 in the linked to document:

http://www.tek84.com/downloads/Holt-Letter2010-12-2.pdf

You generate backup one time password codes at activation time. Store those somewhere safely. Use them in the event of trouble.

Of course, just like your fingerprints, your voice is your username and not your password.

Cool, thanks for sharing!

I am very procedure oriented and have always liked checklists and templates. I have just created a github repo to share checklists and templates here:

https://github.com/godber/software_dev_templates_and_checkli...

Feel free to contribute if you think its a good idea.

I've started it out with the Fog Creek checklist ... if Fog Creek guys don't like my having included it, I'll happily take it down.

How much traffic did this slideshow generate for weekdone?

Links to the PDF documents have been made available by the MSL mission.

http://mars.jpl.nasa.gov/msl/news/whatsnew/index.cfm?FuseAct...

These are published in a manner that is consistent with Science's publication rules.

This is exactly how it works and that data can be found here on the MSL PDS Archive: http://geo.pds.nasa.gov/missions/msl/index.htm

I think the standard release delay is six months. Though I'd say its less about exclusive access to data than it is about ensuring the consistency of that data. MANY things change in the early days of a mission.

Later in that thread there are links to other threads that include pictures of Harlem in recent times:

http://www.skyscrapercity.com/showthread.php?t=404013

http://www.skyscrapercity.com/showthread.php?t=405109

I thought the mercury column based delay line memory was one of the most interesting.