By Soulskill from Slashdot's for-really-bad-days department
An anonymous reader writes: With the construction of Orion, NASA's new manned spacecraft, comes the creation of a new Launch Abort System — the part of the vehicle that will get future astronauts back to Earth safely if there's a problem at launch. The Planetary Society's Jason Davis describes it: "When Orion reaches the apex of its abort flight, it is allowed to make its 180-degree flip. The capsule of astronauts, who have already realized they will not go to space today, experience a brief moment of weightlessness before the capsule starts falling back to Earth, heat shield down. The jettison motor fires, pulling the LAS away from Orion. ... Orion, meanwhile, sheds its Forward Bay Cover, a ring at the top of the capsule protecting the parachutes. Two drogue chutes deploy, stabilizing the wobbling capsule. The drogues pull out Orion's three main chutes, no doubt eliciting a sigh of relief from the spacecraft's occupants."Read Replies (0)
By timothy from Slashdot's couple-of-jockeys-too department
writes "Alan Drysdale, a systems analyst in advanced life support and a contractor with NASA concluded, "Small women haven't been demonstrated to be appreciably dumber than big women or big men, so there's no reason to choose larger people for a flight crew when it's brain power you want," says Drysdale. "The logical thing to do is to fly small women."
Kate Greene, who wrote the linked article, took part in the first HI-SEAS experiment in Martian-style living, and has some compelling reasons for an all-women crew, energy efficiency chief among them: Week in and week out, the three female crew members expended less than half the calories of the three male crew members. Less than half! We were all exercising roughly the same amount—at least 45 minutes a day for five consecutive days a week—but our metabolic furnaces were calibrated in radically different ways. During one week, the most metabolically active male burned an average of 3,450 calories per day, while the least metabolically active female expended 1,475 calories per day. It was rare for a woman on crew to burn 2,000 calories in a day and common for male crew members to exceed 3,000. ...
The calorie requirements of an astronaut matter significantly when planning a mission. The more food a person needs to maintain her weight on a long space journey, the more food should launch with her. The more food launched, the heavier the payload. The heavier the payload, the more fuel required to blast it into orbit and beyond. The more fuel required, the heavier the rocket becomes, which it in turn requires more fuel to launch.Read Replies (0)
By timothy from Slashdot's tine-to-weigh-priorities department
New submitter Tsolias
writes It appears that systemd is still a hot topic in the Debian community. As seen earlier today, there is a new movement shaping up against the adoption of systemd for the upcoming stable release [of Debian], Jessie. They claim that "systemd betrays the UNIX philosophy"; it makes things more complex, thus breaking the "do one thing and do it well" principle.
Note that the linked Debian Fork page specificaly says that the anonymous developers behind it support a proposal to preserve options in init systems
, rather than demanding the removal of systemd, and are not opposed to change per se. They just don't want other parts of the system to be wholly dependent on systemd. "We contemplate adopting more recent alternatives to sysvinit, but not those undermining the basic design principles of "do one thing and do it well" with a complex collection of dozens of tightly coupled binaries and opaque logs."Read Replies (0)
By timothy from Slashdot's money-goes-further-if-you-live-in-omaha department
:Nerval's Lobster (2598977)
writes Software development and IT remain common jobs among those in the higher brackets, although not the topmost one, according to a new study (with graph) commissioned by NPR. Among those earning between $58,000 and $72,000, IT was the sixth-most-popular job, while software developers came in tenth place. In the next bracket up (earning between $72,000 and $103,000), IT rose to third, with software development just behind in fourth place. As incomes increased another level ($103,000 to $207,000), software developers did even better, coming in second behind managers, although IT dropped off the list entirely. In the top percentile ($207,000 and above), neither software developers nor IT staff managed to place; this is a segment chiefly occupied by physicians (in first place), managers, chief executives, lawyers, and salespeople who are really good at their jobs. In other words, it seems like a good time to be in IT, provided you have a particular skillset.
If those high salaries are in Silicon Valley or New York, though, they might not seem as high as half the same rate would in Omaha, or Houston, or Raleigh.Read Replies (0)
Ubuntu Turns 10
Posted by News Fetcher on October 20 '14 at 06:30 AM
By timothy from Slashdot's ten-years-is-a-long-time department
:Scott James Remnant
, now Technical Lead on ChromeOS, was a Debian developer before that. That's how he became involved from the beginning (becoming Developer Manager, and then serving on the Technical Board) on the little derivative distribution that Mark Shuttleworth decided to make of Debian Unstable, and for which the name Ubuntu was eventually chosen. On this date in 2004, Ubuntu 4.10 -- aka Warty Warthog, or just Warty -- was released, and Remnant has shared a detailed, nostalgic look back
at the early days of the project that has (whatever else you think of it ) become one of the most influential in the world of open source and Free software. I was excited that Canonical sent out disks that I could pass around to friends and family that looked acceptably polished to them in a way that Sharpie-marked Knoppix CD-ROMs didn't, and that the polish extended to the installer, the desktop, and the included constellation of software, too.Read Replies (0)