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User: Masato

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  1. Some issues I have with this topic. on Tech That Will Save Our Species - Solar Thermal Power · · Score: 4, Informative

    Wow... Where to start with this topic. I'm by no means an expert in the subject of power, but I have been studying it for approximately a year now (as an electrical engineer) and know people who work in the industry, etc. After reading many of the comments, I just wanted to try and clear up a few of the possible issues I see with this new source of power.

    Before I get into that though, I want to briefly discuss how power is produced today, since there seems to be a lot of misconceptions about how things seem to work.

    Power utilities today have quite a few resources to generate power. The "base load" power that everyone seems to talk about these days comes from large generation units that maintain a continuous, rated power level 24/7. The reasons for this are usually economical, but can also be based out of safety concerns for things like nuclear power. Depending on the area, the remaining power is usually generated with generation units that are committed a few days in advance (although it is possible to get a generator started from a cold start in 1-2 hours) All generators have ramp rates (the maximum amount the power can change during a given period of time), so they are unable to change their power outputs instantly. In cases where the load demanded by the consumer starts to creep above that being generated by the power plants, peaking stations (normally natural gas based) can come online and are able to respond to the load change. Natural gas, while effective at being able to keep the power generation and load in balance, is expensive, so peaking plants normally don't operate unless power prices are high or it is necessary to use them.

    If the load drops for any reason, power plants are capable of throttling down their power generation (again, subject to ramp rates) to approximately 10-20% of their rated output. Anything less than this and the unit will be forced offline (because a minimum level of stream production is necessary to turn the turbine, etc) Although this is one method of regulating power, generation units have a cost curve. The rated power is where the cost of generation is a minimum. Above and below that point, cost starts to rise, sometimes dramatically.

    Alternative resources like wind are used, but not heavily due to the nature of their power production. With modern forecasting techniques, operators are able to predict fairly accurately what wind patterns will be doing 3-5 hours in advance. The major problem occurs when the wind stops blowing. Even though we know 3-5 hours in advance that we need to generate more power, it takes a lot of effort (and money) to commit a bunch of generators to make up the shortage on such short notice. Because of this, wind power tends to only make up a small percentage of total power - so only one or two generators need to come up to make up for any shortfall.

    So what does this have to do with the current topic you ask? What the article seems to suggest is replacing the multitude of fossil fuel based generators with a few solar power generators. While this may look good on the surface, in reality there are many problems.

    The first thing that comes to mind is reliability. People take for granted just how reliable the North American power grid is. In many countries of the world (such as India), power producers cannot meet demand and must make sacrifices to various areas (usually rural) to keep the load balanced. For most modern generators, it's not unreasonable to assume a 1-2% outage rate a year. With multiple smaller generation facilities, this isn't much of a problem, since it is easy to make up the shortage by bringing another generator online. Normally, the system has "reserve power" in the form of generators that are online but not producing power. These generators must be able to start producing power in 15 minutes or less. So, if a generator fails, another generator will be brought up in its place and within an hour should be producing the full amount of required power. In the ev

  2. Re:Real work. on Down Time At Work — What Do You Do? · · Score: 1

    This is still true today. I recently finished an intern job where I was initially stuck in the back doing boring "intern" things. Instead of doing what most of the interns tended to do (and what the company expected the interns to do), I actually used my time to be productive. During the downtimes being taskings, I'd do my best to talk with people and understand how everything in your company's system worked and actually thought about the process the company was using. Because of this, I was able to spot all sorts of problems in the process that ended up saving the company a good chunk of cash and was promptly moved into a better position. By the end of my internship, I had received two major raises (~25% each) a bunch of bonuses and that had enough status that I was being flown across the country (on the company's paycheck) to various major cities to consult with customers (and see the sights, of course). Partly, I think there was luck on my side, but I think it was mostly due to not goofing off all the time and doing the job well. So, I completely agree with everything you said, even the slacking off part. I could pretty much do whatever I wanted and no one would ever question my work ethic.

    One thing I'd like to add though, is the idea of connections with coworkers. During the course of my work term, I also helped out a lot of people who in turned helped me out when the going got rough. By just giving a little sparetime here and there, these people were willing to bend over backwards to help me out if I ever ran into a problem. It made problems that could have taken me days to solve into problems that only took 5 minutes to solve - making me a hero to whomever I was working with.

    By working hard and helping other people (instead of goofing off), I ended up making more money, had a job that was far more interesting and was considered an invaluable employee by most people I talked with.

  3. Re:This. Is. So. Dumb. on High School Students Forced To Declare A Major · · Score: 1

    I completely agree with what you've said. Speaking for a lot of people, myself included, it took a long time to figure out what I wanted to do in life. Even now, with a bunch of life experience I'm still struggling with decisions. I'm a firm believer that too many kids these days are forced into situations (like going to college) when they just aren't ready for them. This can easily be seen by the number of first-year students who either drop-out or switch majors half a dozen times. Me and my group of friends (about 10-12 of us) are all in that boat. It took us two attempts to get through school. Luckily, we're a little wiser now and were able to work our asses off and get back in. Some people won't have that chance due to money issues or the fact that the school just won't allow you back. What are people supposed to do then?

    Kids need direction, but I think that they also have to figure out what they want in life. Just because their parents think that they should become a doctor, doesn't mean that they want to become a doctor. Maybe they've always loved to work with their hands and want to be a craftsman. Sure, it's not as prestigious as a doctor, but in the end whose choice is it? Unless these career paths are very general (i.e. academic career vs. trades), I'd say that from my experience, 9 times out of 10, the kids are going to choose something they think they want and then end up changing their minds.

  4. Hmm... on Making Old Sound Recordings Audible Again · · Score: 5, Funny

    I wonder if they can help this guy?

  5. Re:French bashing? on Conservative Sarkozy Wins Presidency of France · · Score: 1

    Not being there, I can't really comment on this too much. However, don't feel too bad as I hear (from Francophones) that the Parisians can be snobby even to other native French speakers (e.g. if they notice a different accent) The fact that you're an American probably didn't help your cause, but chances are you just met an asshole just like we have any other country.

  6. More information on Laptops And Flat Panels Now Vulnerable to Van Eck Methods · · Score: 4, Informative

    I recently finished a research project on this subject and have actually had a chance to read a few of Kuhn's paper. From what I've seen and what other researchers have done, not a lot of thought has gone into making most equipment EMSEC compatible, so I'm not at all surprised by this finding. Most of the time, having "secure" equipment isn't required as very few individuals beyond large government entities have the money, resources and knowledge to be able to conduct such an attack. Extensive design and testing is required to ensure that equipment conforms to EMSEC standards and most companies are simply not willing to spend the extra money to certify their equipment for something very few people know anything about. According to Kuhn (see Security Limits for Compromising Emanations - warning PDF) emissions levels need to be as much as six orders of magnitude lower to prevent unauthorized snooping on most modern equipment.

    Another paper that is very relevant to this article is from a Japanese group who did research on the same topic (LCDs, laptops, etc) A Trial of the Interception of Display Image using Emanation of Electromagnetic Wave - again, a PDF. What's interesting to note from this paper is the fact that the researchers found that minor inconsistencies in the production of the equipment caused slightly different synchronous frequencies to be detected. This means in an office it could be possible for an attacker to "choose" which monitor they wish to look at by its frequency signature.

  7. Re:A lot has to change to make parents responsible on Judge Strikes Down COPA, 1998 Online Porn Law · · Score: 1

    I completely agree. A coworker of mine went to the bank a few months ago to look into buying a house. He's a single guy, in his 30's and has a reasonably well paying job. The adviser he spoke to actually suggested that he consider getting married, just so he could afford a house.

    Today, in Calgary the average home costs $340,000 and I've read that to afford to live in a regular home, the total family income needs to be $100,000+ per year. How many individuals these days are able to make $100,000 a year or more? Not many.

    Prices are getting so insane here that it's almost impossible for a regular person buy a house. If it was only Calgary it might be okay, but it seems that this trend is happening in most major cities. Unless the market changes or something is done, the average person is going to be living paycheck to paycheck and will have to rent property for the rest of their lives.

  8. Re:Quite a title there on Formula For Procrastination Found · · Score: 3, Funny

    Although I've already seen at least one post to PhD comics, I figured I'd post another since it fits your title so well: Thesis Titles

  9. Re:Pretty cool, but... on Bellagio Fountains Recreated with Mentos and Coke · · Score: 3, Informative

    1: put some hydrocloric acid in an empty (plasic!!) soda bottle, add some aluminum foil, close bottle, throw away. The bottle will start to expand and blow up making a very loud bang.

    ACK! Hydrochloric acid? That sounds like a Darwin Award waiting to happen. Liquid Nitrogen makes a pretty "cool" bang without having to handle any acids.

  10. Re:Excellent idea! on Viral Music Videos A Problem For RIAA · · Score: 1

    Unfortunately, I can imagine the **AA coming up with some sort of "privilege tax" they would tack on to any media - be it film, DVD, CD, etc - to pay for all of that type advertising that they now generously "give" to us consumers. I'm sure this has already been factored into the cost somehere, but a chance to make more money? Why not, right?

  11. Re:15 feet high? on Stupid Engineering Mistakes · · Score: 1
  12. Re:What goes into a name... on The Man Behind Online Porn's 'Steve Lightspeed' · · Score: 1

    If you watch the Frontline episode American Porn you'll see than Adam Glasser, aka Seymore Butts also has his mother working for him in his porn business, so maybe having family working for you isn't as unusual as you might think. After all, if anyone is going to support you in some wacky endeavour it will probably be a member of your family.

  13. Reminds me of... on Singing Science · · Score: 2, Interesting

    Reminds me of Fourier's Song that we got to listen to in class this year.

  14. Liability on Fuddruckers Called Out on Hotlinking · · Score: 1

    No one has mentioned this yet, but I wonder about the possible legal repercussions of this guys actions are? Before he linked to the new website, I would think he could ask for some form of reparation, but after this could Fuddruckers come back and sue him for liable? Does anyone have any more information?

  15. Re:Other 3D file system visualizers on Sun Wants to Make Linux 3D · · Score: 1

    Great... I just downloaded ROOMS to see what the fuss was about and now I'm lost in some sort of moat. What part of my desktop is that!?

  16. Re:Just in case anyone is interested... on MPAA Goes After Its Customers · · Score: 1

    Whoops... Forgot to sent the MPAA's threatening notice too. > MOTION PICTURE ASSOCIATION OF AMERICA, INC.
    > 15503 VENTURA BOULEVARD
    > ENCINO, CALIFORNIA 91436
    >
    > UNITED STATES
    > Anti-Piracy Operations
    > PHONE: (818) 728 - 8127
    > Email: MPAA@copyright.org
    >
    > Monday, July 08, 2002
    >
    > Name: abuse@cox.net
    > E-mail: abuse@cox.net
    > ISP: Cox Communications
    >
    > Via Fax/Email
    >
    > RE: Unauthorized Distribution of Copyrighted Motion Pictures
    > Site/URL: gnutella://xxx.xxx.xxx.xxx:6346/ [with IP address: xxx.xxx.xxx.xx]
    > Reference#: 517703
    >
    > Date of Infringement: 7/2/2002 4:08:38 AM GMT
    >
    >
    > Dear abuse@cox.net:
    >
    > The Motion Picture Association of America (MPAA) represents the following
    > motion picture production and distribution companies:
    >
    > Columbia Pictures Industries, Inc.
    > Disney Enterprises, Inc.
    > Metro-Goldwyn-Mayer Studios Inc.
    > Paramount Pictures Corporation
    > TriStar Pictures, Inc.
    > Twentieth Century Fox Film Corporation
    > United Artists Pictures, Inc.
    > United Artists Corporation
    > Universal City Studios, Inc.
    > Warner Bros., a Division of Time Warner Entertainment Company, L.P.
    >
    > We have received information that an individual has utilized the above refe=
    > renced IP address at the noted date and time to offer downloads of copyrigh=
    > ted motion picture(s) through a =E2=80=9Cpeer-to-peer=E2=80=9D service, inc=
    > luding such title(s) as:
    >
    > Harry Potter And The Sorcerer's Stone
    > Jay And Silent Bob Strike Back
    > Simpsons, The (TV)
    > Windtalkers
    >
    > The distribution of unauthorized copies of copyrighted motion pictures cons=
    > titutes copyright infringement under the Copyright Act, Title 17 United Sta=
    > tes Code Section 106(3). This conduct may also violate the laws of other co=
    > untries, international law, and/or treaty obligations.
    >
    > Since you own this IP address, we request that you immediately do the follo=
    > wing:
    >
    > 1. Disable access to the individual who has engaged in the conduct describe=
    > d above, and;
    > 2. Take appropriate action against the account holder under your Abuse Poli=
    > cy/Terms of Service Agreement.
    >
    > On behalf of the respective owners of the exclusive rights to the copyright=
    > ed material at issue in this notice, we hereby state, pursuant to the Digit=
    > al Millennium Copyright Act, Title 17 United States Code Section 512, that =
    > we have a good faith belief that use of the material in the manner complain=
    > ed of is not authorized by the copyright owners, their respective agents, o=
    > r the law.
    >
    > Also pursuant to the Digital Millennium Copyright Act, we hereby state, und=
    > er penalty of perjury, under the laws of the State of California and under =
    > the laws of the United States, that the information in this notification is=
    > accurate and that we are authorized to act on behalf of the owners of the =
    > exclusive rights being infringed as set forth in this notification.
    >
    > Please contact us at the above listed address or by replying to this email =
    > should you have any questions. Kindly include the above noted Reference # =
    > in the subject line of all email correspondence.
    >
    > We thank you for your cooperation in this matter. Your prompt response is =
    > requested.
    >
    > Respectfully,
    >
    > Ken Jacobsen
    > Senior Vice President and Director
    > Worldwide Anti-Piracy

  17. Just in case anyone is interested... on MPAA Goes After Its Customers · · Score: 1

    The following is a copy of the letter one of the ISP sent out. This topic has been discussed on SecurityFocus' vuln-dev for the past day or so.

    Dear Customer,

    We are writing on behalf of Cox Communications to advise you that we have
    received a notification that you are using your Cox High Speed Internet
    service to post or transmit material that infringes the copyrights of a
    complainant's members. I have enclosed a copy of the complaint letter.
    Pursuant to the provisions of the Digital Millennium Copyright Act ("DMCA"),
    which is codified at 17 U.S.C. 512, upon receiving such notification, Cox
    is required to "act expeditiously to remove, or disable access to" the
    infringing material in order to avoid liability for any alleged copyright
    infringement. Accordingly, Cox will suspend your account and disable your
    connection to the Internet within 24 hours of your receipt of this email if
    the offending material is not removed.

    Please be aware that the DMCA also provides procedures by which a
    subscriber accused of copyright violation can respond to the allegations of
    infringement and, under certain circumstances, cause his or her account to
    be reinstated. To do so, however, the response must meet certain criteria.
    Pursuant to section (g) of the DMCA (17 U.S.C. 512(g)), you have the right
    to submit to Cox a counter-notification which, to be effective, must include
    the following elements:

    (a) a physical or electronic signature of the subscriber;
    (b) identification of the material that has been removed or to which
    access has been disabled and the location at which the material appeared
    before it was removed or disabled;
    (c) a statement under penalty of perjury that the subscriber has a good
    faith belief that the material was removed or disabled as a result of
    mistake or misidentification of the material to be removed or disabled;
    (d) the subscriber's name, address, and telephone number and a statement
    that the subscriber consents to the jurisdiction of the Federal District
    Court for the judicial district in which the address is located.

    In the event that you submit to Cox a counter-notification that includes
    these elements, Cox will forward your counter notification to the
    complainant and advise them that Cox will cease disabling access to the
    allegedly infringing material in ten (10) business days. Unless the
    complainant notifies us that it has filed an action seeking a court order to
    restrain you from engaging in the allegedly infringing activity prior to the
    expiration of those ten (10) business days, Cox will reactivate your
    account.

    Sincerely,

    The Cox Abuse Team

  18. Re:Stopping light altogether? on Stopping Light · · Score: 3, Informative

    The energy itself isn't really "stopped", it's transformed into a different form. When the photons of light impact an atom, it leaves an imprint (in the form of a spin). So, each unique wavelength of light leaves a unique imprint which can then be fetched at a later date by another laser pulse (or so the article says) Hope that sheds some light on the subject. :P