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Machine Design Blogs

Commentary, opinions, and kibitzing by editors of Machine Design Magazine on developments in the news that relate to engineers.

Archive for March, 2008

Interesting statistics about CAD companies using HiB visa holders

This interesting tid bit comes courtesy of Ralph Grabowski’s upFront.eZine newsletter. You can have a new hobby by checking out how many H1B visas are hosted by companies that interest you.


—————


Clemson University records the number of H1B visa-holders in the USA. H1B allows US companies to employ foreign workers for 3 or 6 years in occupations that require a minimum of a bachelor’s degree. (Canadians can work in the USA under similar conditions through the TC1 visa program.)


For the CAD companies I checked, the number of H1B employees in 2007 were:


Company No. Average salary


———— —- ————————


Autodesk 75 $76,690


Bentley 31 $68,189


IronCAD 2 $66,500


Nemetschek NA 2 $74,646


PTC 106 $77,411


SolidWorks 14 $81,956


UGS Corp 74 $77,851


Link: http://career.clemson.edu/graduate_students/H1B/2007/

Would you pay more for a green car?

The Wall Street Journal recently carried an interview with GM’s Bob Lutz that was interesting. One of his comments was on whether people are willing to pay more for cars labeled green. Lutz’s take on it is that for most people, it’s the economics that determine their car buying habits.


ROBERT A. LUTZ: What we’re seeing is there is a portion, a very narrow portion of the population, that will make a financial sacrifice to be green. But I don’t think we can count on the majority of the American public to make a financial sacrifice, or make an uneconomic decision. So I think even as gasoline goes to $4 a gallon, you’re still going to see people doing the calculation. How much more do I have to pay for a hybrid system? Most people, not the ecologically committed, but most normal people are going to take a look at how much more am I paying for this fuel-saving technology and will I be able to amortize it over the life of the vehicle?


Where we’re seeing we have reached the pain threshold is with the Duramax diesel engine, in the full-size pickup trucks. To meet the latest emission regulations, we are now forced to charge $11,000 for the diesel option, and that is putting a kink in diesel sales, and a lot of people are opting for the gas engine again.


To provide an economic incentive to people to buy these much higher-technology vehicles that are going to be required to meet the CAFE [Corporate Average Fuel Economy] mandates, the customer has to be put in the equation. That means that at some point, fuel prices have to rise. I think that without an economic incentive, we are not going to see a wholesale shift in demand of vehicles.


——————–


Later on, he sheds some light on why GM is putting a lot of effort behind bioethanol. It still gets back to economics:


MR. LUTZ: We have the 35-mile-per-gallon standard, and General Motors obviously is confident that we can meet that standard technologically, but when you add a diesel engine plus a hybrid, you are adding thousands of dollars of cost.


Ever since CAFE legislation has been in effect, General Motors has improved the efficiency of its truck fleet by 60%, the fuel efficiency of its passenger-car fleet by 100%, and fuel use in the United States has done nothing but go up. So the idea that by legislating 35 miles per gallon, we’re somehow going to use less fuel, it would be the first time that it ever worked, because it inevitably results in people taking their fuel budget and buying a larger car. That’s why if the customer is not in the equation in terms of feeling pain in the wallet from paying the fuel bill, it’s destined not to work.


Now, technology costs money, so what is a better way to get at the problem of getting the automobile out of the environmental equation, or at least out of the petroleum and CO2 equation? I think the only rational thing to do is put less technology in the car, which is the conversion to making cars E-85 capable, and burn E-85, which is a renewable fuel that could be done from biomass.


And if you can do that for $150 a car, as opposed to meeting a 35-mile-per-gallon standard at many thousands of dollars per car, which one do you pick? It’s not a question of passing the buck; it’s just look at what we have to do to the cars to attain CAFE, versus the much less we’d have to do to cars, with much less pain on the American driving public, if we had a concerted national E-85 effort.

Orange More Important Than Green

Ralph Grabowski writes a great free e-newsletter on CAD which I subscribe to. His latest issue has an interesting observation on CAD companies and the green movement, which I have reproduced here. You can get his newsletter atr www.upfontezine.com


. . . . .


Green is the marketing buzzword currently adopted by some CAD vendors. Earlier this month, one told me that they are also “going green.” Why now? So that they wouldn’t be seen as the last ones getting on the bandwagon. “Do you get a lot of feedback from your readers about green?” they asked me.


Zip.


The only reason some people might care about green, I explained, is to make money from it. Or to save money. Otherwise, it’s a non-issue for most of the population.


(We got a new washing machine last week. It is energy efficient. Compared to the old one whose transmission broke down, the new one will pay for itself in less than 12 years through lower electrical, natural gas, and water bills. I’m excited.)


If green is unimportant to most people, then what is? To learn the answer, fly over your city, any city, late at night — after doubling the cost of your airfare by paying carbon-offsets to someone to run an organization that might pay someone else to plant some trees that you can’t be bothered planting yourself.


…all those streetlights illuminating sparsely-traveled roads. (When I see the thousands, millions of streetlight bulbs glowing orange, it makes me want to become a lightbulb manufacturer.) There is your answer: Security is more important than green.


Bruce Schneier writes: “The lack of a security mindset explains a lot of bad security out there: voting machines, electronic payment cards, medical devices, ID cards, internet protocols. The designers are so busy making these systems work that they don’t stop to notice how they might fail or be made to fail, and then how those failures might be exploited.”


The Autodesks, Dassaults, UGSs, and PTCs could consider adding security design assistants to their software. I wonder how hard that might be, because security involves thinking wrong in order to get it right.


Link: Inside the Twisted Mind of the Security Professional http://www.wired.com/politics/security/commentary/securitymatters/2008/03/securitymatters_0320

Robotic music? Only if a collection of actuators is considered a robot

The Science Magazine site has a pretty interesting video of what’s called robotic music which is interesting for what it reveals about the definition of a ‘robot.’ The gadgets you’ll see are basically collections of actuators put together in interesting ways to generate different kinds of sounds. They hardly classify as robots in the stricter sense of the word, particularly in that they basically play musical scores created by humans. But the overall effect is worth watching.


http://www.sciencemag.org/cgi/content/full/319/5870/1613b

math panel says: emphasize fractions

Readers of my editorials may recall one piece wherein I mentioned the story of a 1980s presidential candidate who reportedly had to ask his press entourage how to calculate the decimal equivalent of 3/7, to help his son with a home work problem. With that tale in mind, perhaps the recommendations of a presidential panel on math education should come as no surprise:


“Difficulty with fractions (including decimals and percents) is pervasive and is a major obstacle to further progress in mathematics, including algebra,” the panel, appointed by President Bush two years ago, said in a report.


Another main point to come out of the panel’s work is that we really don’t know all that much about the best way to teach mathematical concepts. You can read a good commentary on the report findings here, as well as find a link to the report itself:


http://mathpanelwatch.blogspot.com/

American PhD charge with a crime for calling himself “Dr.” in Germany

Apparently the Germans don’t recognize a PhD degree as conferring the title of Doctor, so they charged an American researcher working at the Max Planck Institute who had no idea there was a German law on the books about this. Poor guy. Talk about something coming at you out of left field. He could go to jail for year. Some of the comments posted in the Chronicle of Higher Education about this are quite funny.




http://chronicle.com/news/article/4134/whats-up-doc-german-law-bars-american-phds-from-calling-themselves-doctor?utm_source=at&utm_medium=en

MIT eliminates tuition for families earning below $75,000

Not only that, they will not figure in the value of your home when calculating net worth. An item from the Chronicle of Higher Education on this development is interesting for the commentary it got from posters reacting to the news.


http://chronicle.com/news/article/4107/mit-eliminates-tuition-for-students-whose-families-earn-less-than-75000?utm_source=at&utm_medium=en

An oversupply of solar cells?

An oversupply of solar cells? That’s what an analyst writing on Seeking Alpha says is happening. Part of his argument:


…….if thin film solar continues at its same growth rate, in 2009 thin film will make up 17.8% of all solar power generation. That would leave a capacity of polysilicon exceeding demand by 17,000 metric tons, based on capacity expansions announced by the polysilicon manufacturers.


He is basically saying it might not be a great time to buy stock in solar cell companies, which might be about to see a contraction in profit margins. The comments posted at the end of the piece are interesting as well.


http://seekingalpha.com/article/67253-contradictions-in-the-solar-market

More on remedial college math: Are college students confounded by simple algebra?

Here is another interesting item from the Chronicle of Higher Education. Sixty professors at the University of Washington have signed an open letter to the Legislature complaining that college freshmen are “confounded by simple algebra. Interestingly, nobody from the school’s college of education would sign the thing.


http://chronicle.com/news/article/4083/washington-legislature-gets-an-earful-about-freshmens-woeful-math?utm_source=at&utm_medium=en

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