H1-B visa problems

Industry has long maintained that they don’t use the H1-B visa program to drive down wages for technical professionals. There have been many allegations but until recently I hadn’t seen good evidence of an organized effort to avoid hiring American tech workers.

That was until earlier this week when GrrlScientist posted about this issue complete with a damming video courtesy of The Programmers Guild. In the post is this comment from “Human Resources Rep” who gives further details of this disgusting practice. I suspect there are many people in this country who have knowledge of this abuse of the system but blowing the whistle is a sure way to cause you and your family financial ruin. That’s why the people who know can’t say so publicly and leaking documents can also cause legal problems.

A few days later she posted again about this and included a video clip from Lou Dobbs CNN show. It is nice to see this issue getting some press again. I think Congress should launch a formal investigation into the bad practices of H1-B visa abusers. There will need to be extraordinarily good guarantees of anonymity and immunity from prosecution for whistle blowers who can provide evidence.

Final Joost update for me

Well I’ve been playing around with the newest Joost version, it rarely ever plays for more than a minute or two. Also the multi-monitor support has not improved and the image quality is not very exciting compared to downloadable video or cable TV, so I’m giving up on it. For now I’ll just keep using Instant Media for IPTV.

If anyone wants an invite to try out Joost for themselves let me know and I’ll get you one ASAP.

FCC says not yet for cell phones in airplanes

Since December 2004 the FCC has been investigating a change in the rules that would allow cell phone usage on airplanes. Their concern is the impact the change would have on the terrestrial cell phone network. In the Memorandum Opinion and Order the FCC says:

It is apparent that it is premature to decide the issues raised in the Notice. The comments filed in this proceeding provide insufficient technical information that would allow the Commission to assess whether the airborne use of cellular phones may occur without causing harmful interference to terrestrial networks.

Further, because it appears that airlines, manufacturers, and wireless providers are still researching the use of cell phones and other PEDs onboard aircraft, we do not believe that seeking further comment at this juncture will provide us with the necessary technical information in the near term. Accordingly, we conclude that this proceeding should be terminated. We may, however, reconsider this issue in the future if appropriate technical data is available for our review.

Keep in mind that the FCC is not responsible for the issue of potential interference to onboard instruments and equipment, the FAA and the airlines are responsible for deciding those issues. The FCC’s responsibility is to make sure that the licensed cell phone networks are not adversely impacted by cell phone signals originating from airplanes. This seems like the wise course of action, in my opinion cell phone signals have a low reliability already and further lowering of reliability would be very bad.

Tip of the hat to Conformity for pointing me to this notice. FYI -the announcement of the order is here.

Capacitive voltage dividers and free energy

Recently on a circuit simulation mail list someone asked about simulating capacitive voltage dividers for a DC circuit. I couldn’t for the life of me think of why anyone would be attempting this. A number of list members responded and straightened the questioner out about capacitors and why not to use them for DC voltage division. After he was helped he thanked everyone and then pointed out what he was working on.

It would be hard to explain the circuit without a 20 page volume of concepts and math. But I will show it to you at Front Page (overunityenergy – Advanced Energy Technologies).

Now it makes sense, he was asking about a nonsense circuit. With a circuit this simple I can’t imagine it would take me 20 pages of concepts and math to fully describe its operation. I guess you would need 20 pages to make sure you have enough pseudoscience in there to fool people. Just check out this schematic from the home page:

[Update June, 2 2007] overunityenergy.pbwiki.com has been deleted but you can still see a version of the circuit here.

Ooh, they’ve been working on this for 12 22 years (1985-2007) thats determination. I love the Q=CV C=Q/V informational label, I guess if you work this long on these types of circuits you need a reminder of basic algebraic equation solving. Maybe the next revision will expand this to include the other form, V=Q/C, it should be a breakthrough for them. 😉 If you understand DC circuit theory you have to check out the “SFG 101 Course Of Study” for some good laughs. I’m not sure if the maintainers of the site are con-men or just pseudo-scientists with no real knowledge of physics (since they ask for money I’m leaning towards con-men).

A final note, while I was typing this up I suddenly heard a cuckoo clock sound from my PC. I hadn’t noticed the cuckoo clock on their website before, hmm, is this site a joke or are they [are] just too dense to notice the humor in having their page say cuckoo to visitors every hour.

[Update May 30, 2007] A couple of updates to this post. The person who posted to the LTSpice mail list is the owner and maintainer of the site, Dannie Ray Jackson. I misread the copyright dates on the picture of the schematic and noticed my error when Dan posted his Spice circuit to the LTSpice list. I think I just couldn’t comprehend how anyone could work on one simple circuit for 22 years without understanding what they are doing wrong. I had thought this was a young person who had started working on this at age eight and now at age twenty still hadn’t learned enough about electronic circuit design and basic physics to understand what he’s seeing, I was wrong.

Dan thinks he has some success because of the rigged spice schematic (it has multiple power sources). Other posters on the mail list have attempted to get him to see the error of his ways but alas I suspect he will just ignore them. In case Dan or anyone else reading this wants to understand what is really happening in this circuit I’ll give some hints. Although I haven’t seen Dan’s gathered data I suspect he has data showing that there is almost always an output voltage greater than the supplied voltage. However the amount of increase varies depending on many factors which he has not controlled for so he doesn’t have a clear indication of what is causing the phenomenon. I remember having similar results with circuits I played with 40 years ago when I was an 8 year old just starting to learn circuit design and analysis.

One key to understanding the potential sources of the extra power are in the common uses of diodes and capacitors in normal circuit designs. Diodes are very often, I hazard to say most often, used for rectification and demodulation, large value capacitors most often are used to store charge and filter AC signals to nearly a pure DC. The other thing to understand is that since the 20th century most places on earth have measurable electromagnetic fields originating from radio transmitters (intentional and unintentional) and AC power wires. This EMF is considered signs of ghosts by many ghost hunters and mysterious power sources by free energy seekers. The reality is that if you look at the spectrum with better instruments (e.g. oscilloscope, spectrum analyzer) instead of using simple detector circuits (e.g. EMF meter, home brew circuit) you’ll be able to actually identify the source.

All that is happening with the circuit from SFG Research is that the ambient EMF is being rectified by the diodes and stored in the capacitors. A simple way to prove this without expensive equipment is to mount the circuit in a well shielded enclosure. As long as you fully discharge the capacitors between tests, you’ll see that when the circuit is adequately shielded there is no increase in output over that provided by the battery. Keep in mind the increase in power when not shielded is very real it is just not all that useful as a power source. The power is useful in its RF form as it will allow you to hear a radio station without the need of external power (crystal radio set) and the low frequency form can be used to show the presence of live wires without actually contacting the circuit.

New version of Joost

I’ve installed and am trying out the new Joost beta version “Friends Edition 0.10.2”. The new designation “Joost beta – Now For Friends” marks the unlimited availability of invites to hand out.

I had gotten some invites a couple weeks ago and gave them out to readers who asked for them. So, if any reader wants a Joost invite leave a comment and I’ll send you an invite. To send an invite Joost requires your first and last names plus an e-mail address. To make sure the whole internet doesn’t see your e-mail address, simply put it in the e-mail address field of the comment submission form, that way only I will see it.

Launching version 0.10.2 for the first time I found it to be about the same as the previous version. The UI is changed slightly and I did get to watch a few minutes of video (previous record for length was about 15 seconds). My guess is that the only play for a short time problems are simply server overloads that will be corrected soon. It still has some quirks when on my secondary monitor, tray icon menu disappears, choppy playback in full screen mode but, other non-beta applications I use (e.g. MS Media Center, Adobe Reader) have annoying quirks on my secondary display too.

Overall Joost shows much promise and I intend to keep playing with it for a least a few months. In the meantime I can still get my fix of IP TV like DL.TV and Cranky Geeks automatically via Instant Media.

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U.S. Supreme Court issues patent system ruling

This is not a giant leap forward but it’s at least progress. From an article on CNET that I was pointed to by Harold on the PICList. On Monday the court ruled unanimously to change the rules set by the patent appeals court for determining patent validity. IBM’s assistant general counsel for intellectual property law, David Kappos said:

“What we have had is an era of extreme uncertainty caused by the issuance of many trivial and marginal patents under the old test,” he said in a telephone interview. “What we’re going to see now is actually more certainty because those trivial and marginal patents aren’t going to get issued.”

Anything that will help stop bogus patents is a good thing. I’m certain this ruling won’t be even close to a complete cure for the problems of the U.S. patent system but it’s a start. Ed Black, president of the Computer and Communications Industry Association commented:

“This may make the holders of some lousy patents a little less interested in going the litigation route because it may well be they realize that their chances of winning are lower”

But qualified this with:

“I have to mitigate that comment unfortunately a little bit by saying that an awful lot of litigation goes on here that isn’t expected to go to trial; it’s for extortion purposes.”

New Hearing Aid Technology

I read a couple of articles about interesting new technology for hearing aids in EETimes this week.

The first is about the Epoq hearing aid line from Oticon, the article is here. The MP3 player and cell phone integration is nice and should drive sales. What most interested me though was how they accomplished the continuous real time wireless communication within the tiny 1 mW total power budget typical of hearing aids. They did it by creating a magnetic-coupling system that requires only 300 – 600 µW for Tx and 300 µW for Rx. With this tiny power consumption they can still get 120kbit/s for up to 2 meters.

The second article is about AMI Semiconductor’s new 24-bit DSP chip the Ezairo 5900. These new technologies should help increase the utility of hearing aids and encourage more of the people with hearing loss to use them.

The latest news on Joost

I finally succeeded in getting Joost setup, they released a new beta and modified their servers. It is certainly a very pretty program but so far due to the beta nature of the system, I haven’t gotten to watch more than a few seconds of a program. I suspect the problem is adjusting their servers to handle the higher load from increased beta testers.

They have stopped accepting applications for the limited beta program but, they have promised that everyone who previously applied will get their invitation to join in the next weeks. They also appear to have stopped issuing invitation credits to current beta users (I get none). They expect to move to open beta testing for all people soon.

Once I get to watch some whole programs and play around with the features I’ll post a review.

Joost update

I wrote about Joost a couple of times back in January, see them here and here. Today I finally got invited to try out the Joost Beta, although it looks like they’ve made the beta public now.

The download and installation went fine but, when I try to run Joost I get this error message.

An error occurred!
Unable to connect with the network
Please visit http://www.joost.com for more information or email support@joost.com

Checking the Joost forums I see that many others are having the same problem. Oh well, I’ll try it again later, for now I’ll just watch cable and Instant Media .