Follow Slashdot stories on Twitter

 



Forgot your password?
typodupeerror
Note: You can take 10% off all Slashdot Deals with coupon code "slashdot10off." ×

Comment Re:Action Required !! (Score 1) 373

If this is actually a credible report, then the U.S. government needs to stop funding the rebuilding/construction of areas that are CURRENTLY under sea level like New Orleans and the dikes and berms around it.

New Orleans was built on the high ground. But over time, parts of it slowly sank into the soft marshland underneath. There is no way they will abandon it. It's cheaper to continue to keep the water out. And it is mostly state and local money being spent, so let the locals vote with their pocketbook. I'm glad, because it is indeed a very special place.

Comment Re: lightning strike (Score 5, Insightful) 141

Bullshit. I used to design high voltage connections, and tested using a 300kV impulse generator. I've seen a lot of crazy stuff analyzing field failures. You can greatly reduce the risk, but you cannot remove all risk in an above ground facility, as a practical matter.

I do see lots of silly stuff done, based on myth and lack of knowledge.

Comment Utilities use Aluminum (Score 1) 288

Tin, nickel, gold, copper, steel... what haven't I seen used for connectors? Aluminum, that's about it. I think we all know why, but the sparks that shot out of the outlets in the mobile home in which I spent many of my formative years due to oxidation of the aluminum wiring are a big clue if anyone doesn't

Electric Power Utilities are heavy users of tin-plated aluminum connectors. They are normally used with aluminum cable, so you don't have fewer issues with thermal expansion, etc.

Using aluminum cable with copper connectors will generally result in cold-flow degradation of the connection, leading to overheating and fire.

Comment Re:The content of this article was lost in the noi (Score 1) 422

What technical reason would cause photographes to prefer mirror slap over the near-silent operation of a mirrorless?

My DSLR's are very well developed for very fast focus in very low light ( Nikon D700, D800). The optical viewfinder has zero lag, and works under all light conditions.

My mirrorless cameras (Nikon V1, Sony A6000) have electronic viewfinders (EVF) that have a lot of lag in dark conditions, making the camera almost useless at times. The Nikon V1 has the best on-sensor AF I've seen, and is the closest to a DSLR of any mirrorless camera. But it and the Sony A6000 simply struggle under low light conditions.

EVF's are fantastic for video, and (with "focus peaking") great for use with manual focus lenses. DSLR optical viewfinders are blind when shooting video. But EVFs are not up to the level of a DSLR for stills. That's why I shoot both.

Comment DOF is optical, has nothing to do with sensor size (Score 1) 422

Your forgetting that DOF is dependent not only on the lens, but also sensor size

This is not correct. DOF is dependent on the optics, and has nothing to do with sensor size.

The source of this commonly shared myth is the association of smaller sensors with shorter focal length lenses. It is the shorter lens that increases DOF, not the sensor.

Comment Re:Or just make the A-pillar narrower. (Score 1) 191

You can't reasonably do that, the A-pillars have grown to meet the engineering demands of modern rollover safety standards.

I agree a narrower width has to be compensated for, but there's plenty of room for that if you increase the depth. It may require a special structural component to be placed there, but this is within the realm of what can be done, I'm sure.

But you may have knowledge that i lack, and there may be something I've overlooked. Please share if you have more details.

Comment Re:That's not the problem; the rearview mirror is (Score 1) 191

Why doesn't anyone make a rear-view mirror where you don't have to be 5'2" or shorter for it not to block your vision?

I have this same issue. Generally, I can invert the mirror to get it higher, as most have mounts on the top of the mirror.

Comment Re:Where will decent software come from? Here's 4 (Score 4, Informative) 111

I'm also a Solidworks user. I think you overlooked a few.

GeoMagic Design Elements US$1300.
McNeel Rhino US$ 995
Cubify Design US$ 199
Cubify Invent US$ 49

I used a trial of GeoMagic Design, and almost purchased it. I think it was Alibre Design, so it somewhat of a Solidworks clone, and is far better than I expected. But my clients use Solidworks, so.....

I also use Rhino, and it does stuff Solidworks can only dream of. It lack full parametrics and a history tree, but has fantastic surface modeling. If you do complex surfaces, this is the one to get.

Cubify Design and Invent - have not tried them, but they likely fit what most people want to do - make simple parts.

Disclosure: I have been a customer for each of these companies, and know people at all three. I used to be a dealer for Solidworks and Rhino 14 years ago, and wish I didn't have to pay full retail today.

Comment BS - what they want is problem solving skills (Score 1) 553

In school, I was a "problem" because I was a critical thinker. I've also been fired for trying to prevent product failure ("how dare you suggest we test what the salesman said!") - one that failed exactly the way I predicted.

I've seen the same message is most workplaces: Follow our dogma or be punished.

On the other hand, I went to the (now gone) us steel institute for problem solving, and it changed my life. This is a skill that companies seek. In a nutshell, if a company (well, boss) thinks they know how to do something, you better do it their way else. But if they don't know how to do it, then you are allowed much more freedom.

An interesting article on the poor leadership in the US offered this theory. 1) Parents see more presidents come from Ivy League universities. 2) Parent pushes kids to get good grades, etc. needed for acceptance. 3) Schools demand conformity, student complies. 4) Leadership positions are filled with "leaders" who have been trained to conform. 5) New events occur, and the "leaders" are lost without a framework to fit the new events.

Examples: Music and movie downloads. Newpapers vs. web. Putin saying "those aren't Russian troops". Apple seeing "professional management", firing non-conforming Steve Jobs, then bringing him back after the professionals nearly destroyed the company.

Comment Why a GUI? Well, back in the day.... (Score 4, Informative) 347

That's one thing I never understood, why Microsoft went GUI with the servers like they did, other than to know that they sold a lot of server OSes to people that had no business running servers in the first place...

Simple. Most business people had been exposed to DOS, then moved to Windows and found it much easier to use and understand. The Novell guy comes in and tries to sell a Netware server. Yep - looks like DOS. I came in with a Windows server. Looks just like his PC. He sees File Manager, drive letters, Notepad, Paint, and suddenly he feels like this is the more advanced system, and he is far more comfortable with it.

A lot of the Netware guys around my area were extremely arrogant, and treated their customers like crap. Once they got a server installed, the customer was clueless and the vendor would abuse that. Our business model was to be open with the system and point out that we can easily be replaced, keeping us focused on their satisfaction. With NT Advanced Server (the correct name), the business owner could actually watch us and understand what we were doing with his system. We replaced a fair amount of Netware servers in those days. And you can see who won.

[A computer is] like an Old Testament god, with a lot of rules and no mercy. -- Joseph Campbell

Working...