Follow Slashdot stories on Twitter

 



Forgot your password?
typodupeerror
×

Comment Re:Yes! (Score 4, Funny) 1774

I have a similar story from my own childhood. One summer, when we were driving through Osoyoos, the VW Rabbit overheated and we needed to stop and get it repaired. This was in the late '70s, and "foreign" cars breaking down in small towns was cause for a serious over-charging at the service station. A thousand dollars later, we're back in the Rabbit heading up the steep hill on the Crowsnest Highway heading east. It's a steep climb out of the desert, so we're all on tenterhooks to see if the car is actually repaired. Mom is seriously pissed about the overcharging, but when she looked back at the evil city she turned into a telephone pole.

Comment Re:Too Bad (Score 2) 244

Option 1. Accelerate half the way there at 9.81 m/s/s, then turn around and decelerate at 9.81 m/s/s.

Option 2. Travel at a constant speed, but spin the craft about it's axis such that the outside shell of the craft has centripetal acceleration of 9.81 m/s/s. Live on the inside using the craft's wall as a floor.

Comment Re:And this is why alarmists come off as flakes (Score 1) 1367

I know that it's counter-intuitive, but the mass of CO2 created by burning a kilogram of gasoline is greater than one kilogram. Volume isn't very interesting, because CO2 is a gas and gasoline is a liquid, so it's no surprise that the volume of gas created is greater than the initial volume of gasoline. This fact (that the CO2 is more massy than the gasoline) is counter-intuitive because most people naively apply conservation of mass to the problem, and say most of what is produced is water, so the mass of CO2 must necessarily be less than the mass of gasoline. This is how folks get tripped up: the oxygen has mass, and a lot of it.

Gasoline is a mix of chemicals, isooctane, butane, and many others, but it's actually pretty close to CH2 in composition. Maybe something like CH2.5. To a first approximation, every carbon atom in gasoline is part of a CO2 molecule after combustion. Some of it is just carbon (soot) and some of it is CO, but the biggest component is CO2. Oxygen is 16 times as massive as hydrogen, so after combustion the mass of CO2 is greater than the mass of gasoline you burned.

here is a reference that describes the situation in greater detail.

Comment Re:More pressing question (Score 1) 360

How do you get people (customers, bosses, etc._ to prioritize things like bug reports as anything other than "highest"?

You say, as respectfully as you can muster, "This is your opportunity to provide input on the order in which the work should be done. If you don't prioritize then you let the developers decide what's important. After all we have to do the work in some sequence. We will do our best, but we can't prioritize as well as you can. Please help us to succeed. Can you identify the ten most important defects/use cases/whatever?"

The first time you do this you will get some crazy priorities. At a very immature organization that I once worked for, we had a meeting to prioritize 1-2-3. The meeting went like this, "That's a one. That's a one. Hmm. That's a one. That's a one. Hmm, gee. Aaahhh. That's a zero..." No kidding, we left the meeting with two dozen ones and a few zeroes, but I was pretty happy about it - progress!

Another thing that can be effective, though belligerent, if you have a priority-setting session that goes off the rails is to scan the list of items in the largest tranche of like priorities (usually the highest) and find the easiest or most enjoyable one to work. Tell the group that's the first one the team will work on, and tell them why: because it's easy, fun, whatever. Even better if you can list a handful of items like that. After saying it, you will get a new higher-than-high priority class, because the easiest and most fun item is never the most important. Beware, though. This will get you what you want, but you will piss somebody off for being lazy or looking to have fun at a sweatshop.

Comment Quit right away. (Score 1) 735

You think that your management is inside your circle of friends, but they would do anything for money. Maybe they wouldn't kill your grandmother, not sure. In business, this is called "making the hard decisions." You have to do it to manage people. In business, this is called "playing with the big boys."

You must quit your job now, because you have an unhealthy relationship with your coworkers and bosses. You will be badly hurt if they ever have to let you go, and it will take a long time to recover from it at a time when you will have to search for a job.

Comment Re:Lack of apps? (Score 1) 341

Seems to me what they need to fix is the erroneous perceptions people have around the entire process.

This should be an object lesson for any device manufacturer. Developers look once when it's new, and never look again. I honestly assumed that RIM was an expensive platform for development until I read your post. I still think that it probably sucks, though. It is hard to shake the kind of hate-on that RIM had for developers in the early days. The white-knuckle, cold-dead-hands reductions in cost that you list for code signing says to me that RIM really thinks I should pay for access to their market.

Comment Re:Also a pony and a flying car for everyone. (Score 1) 320

You should read up on adaptive impedance matching in smart grid, also known as Volt/VAR optimization. Also, you should know that load shedding, like not running pool pumps for an hour during peak load, can delay construction of new power plants as well as investments in the T&D network infrastructure to reduce congestion. This stuff really works, and economic benefits can be built in so that customers will choose to take advantage of load shifting programs.

Comment I switched to OS/X (Score 2) 249

Several weeks ago I switched from Ubuntu to OS/X on a Hackintosh. I hadn't owned a Mac since my 512k in the 1980s. I had always hated that Mac because I couldn't find the command line. However, having got an iPod Touch and then an iPad, I thought I would give OS/X a shot.

I hated it. I couldn't get used to it at all, and the feeling lasted for a long time. Why is the menu bar at the top? command-tab switches applications, but not windows within applications. You can never tell what's running without a bunch of effort. Then, my wife asked me an interesting question: why does Word start quickly sometimes, and other times it is really slow to start? I began thinking of how to explain this goofy situation that the application doesn't actually quit when you close the window, and then I realized the truth of it. Sometimes Word starts fast, and sometimes it's slow. Don't worry about it. Just click. You don't know where your photos are when you import them into iPhoto? Don't worry, just click. Every application you ever started today is still running? That's what the VMM is for so don't worry, just click.

Now, I'm a real Mac user. Well, I paid the price of an iPad for my desktop, so I suppose I'm not a true Mac user. However, I have come to truly love the abject simplicity of using a Mac. I love the dock, the app store, all the shortcut keys, all the stuff that works that way when you try it... This abomination could really take off.

Slashdot Top Deals

This restaurant was advertising breakfast any time. So I ordered french toast in the renaissance. - Steven Wright, comedian

Working...