Slashdot Mirror


User: bgspence

bgspence's activity in the archive.

Stories
0
Comments
320
First seen
Last seen
Profile
(view on slashdot.org)

Comments · 320

  1. This idea was stolen long ago on Coder Accuses IBM of Patenting His Work · · Score: 1

    The Burroughs B6500 stole much of this idea back in 1969. But, you could not turn it off, it was always on. And it had an additional memory protection feature, preventing an erring program from trying to execute data as an instruction or treating an instruction as data, or overwriting a pointer to memory with data. It detected all memory access or overwrite errors at memory access time.

    It's all been done before, just in patently different ways.

  2. ObjectiveC++ on Sony Adopts Objective-C and GNUstep Frameworks · · Score: 1

    The Objective-C language syntax was carefully designed to co-exist with C and C++. It may look a bit different than C or C++, but that is by design. It was designed to mix into both. It therefore required a syntax style which would be unambigious. It had to look different, or it would have just been sm odd flavor of C or C++.

    Here is what Apple says about 'Using C++ With Objective-C': http://developer.apple.com/library/mac/#documentation/Cocoa/Conceptual/ObjectiveC/Articles/ocCPlusPlus.html

    "Apple’s Objective-C compiler allows you to freely mix C++ and Objective-C code in the same source file. This Objective-C/C++ language hybrid is called Objective-C++. With it you can make use of existing C++ libraries from your Objective-C applications.

    "In Objective-C++, you can call methods from either language in C++ code and in Objective-C methods. Pointers to objects in either language are just pointers, and as such can be used anywhere. For example, you can include pointers to Objective-C objects as data members of C++ classes, and you can include pointers to C++ objects as instance variables of Objective-C classes."

    If you want to use C or C++, go right ahead. The Objective-C language includes ALL the capabilities and drawbacks of both C and C++.

  3. Re:Who would stand to benefit from such a study? on Flash Can Rob 2 Hours From MacBook Air's Battery Life · · Score: 1

    If I don't want to receive "an interactive, graphically rich application delivered via the Internet, what tool do you use?"

    I use ABP and Click2Flash

  4. Quid pro Quo on Considering a Fair Penalty For Illegal File-sharing · · Score: 1

    The song penalty should be about the same as the record companies are hit with when they rip off their artists.

  5. Quote stuffing on SEC Blames Computer Algorithm For 'Flash Crash' · · Score: 1

    There's lots of gaming going on with high frequency trading, or really high frequency price pinging, bids and asks which are tossed out and canceled to simply mess with the quote queues. High frequency algorithms can flood the queues to get artificial imbalances and quote delays. There might even be some arbitrage possibilities based on differences between different quote systems time stamp transactions. Some timestamps are the time of the quote when queued, and others are the time the quote leaves a queue. This can lead to price inversions or other information queuing distortions.

    According to Eric Scott Hunsader, the founder of Nanex the Chicago data firm that first identified strange patterns, "This surge in orders may not have been intended to cause the general market rout. Instead, it may have been intended simply to slow down some markets so that traders could profit by arbitrage with other exchanges."

    There's way too much potential for gaming the queues if there is no cost to fake a bid or ask. When the cost is zero you get the same thing we have with spam email. If email cost a fraction of a penny to send, spam would drop drastically. If bids cost a tiny amount and were forced to remain open for the time a bid could electronically circle the globe, then that small bit of friction would eliminate many of the system's instabilities. And, all price queues should use the same time-stamping method.

    Here are a few good links to more information:

    http://dealbook.blogs.nytimes.com/2010/09/27/troubling-trades-found-ahead-of-flash-crash/

    http://www.nanex.net/FlashCrashFinal/FlashCrashSummary.html

    http://www.thestreet.com/story/10876642/4/the-5-dumbest-things-on-wall-street-oct-1.html

  6. Hammers on Software (and Appropriate Input Device) For a Toddler? · · Score: 1

    The most age appropriate devices for kids to use with computers and TVs are probably a nice set of hammers to smash and bang the things. They really are as detrimental to early mental development as anything known. Hammers are much better for them. You probably don't want to try to give them a head start with sharp knives or loaded guns, either. Read up a bit abut child development before you have one. Winging it with what seems right is often just the opposite of what is most 'age appropriate'.

  7. Really? on Samsung Shows Off Galaxy Tab, Android Allegiance · · Score: 0, Troll

    To quote from:
    http://www.infosyncworld.com/reviews/internet-tablets/samsung-galaxy-tab/11309.html

    "In design, its light build provides portability, with its svelte dimensions making it easy to grip and use."

    If they can't even design a press release, how do they expect to create a tablet with as much attention to detail as Apple does with the iPad.

    Lots of tech specs on the hardware, but probably a big fail on the software environment.

    But, I might consider it if it came with wheels so I could 'Skate and Surf".

  8. They might work on Calling Shenanigans On Super SATA's Claimed Audio Qualities · · Score: 4, Funny

    Don't ignore the placebo effect in audio perception. Placebos have been proven to work, and it has also been shown that higher priced placebos are more effective.

  9. Re:Well? on The Tuesday Birthday Problem · · Score: 1

    And, we are of course assuming the children being mentioned are the currently living children. It would be common to not mention those who have died. The probabilities for deaths of children are probably not evenly distributed for each sex, and probably vary according to age.

    You then need to apply the distribution of these death probabilities by sex and age to the distribution of possible child ages for the set of families with non identical twins.

    And, we haven't even mentioned transgendered children.

  10. Re:Well? on The Tuesday Birthday Problem · · Score: 1

    You are making the assumption that the probability of having a boy is the same of having a girl. This is not true.

    But, assuming it is you still have a problem with identical twins. You can break the set of all families into two sets, One those without identical twins and another those with identical twins.

    Your tables are valid for the set of families who do not have identical twins. The probabilities for them is granted to be equal for each instance of your set of possibilities.

    With the case identical twins there are seven groups of BB and GG, only one of which occurs on a tuesday. So you have a p = 1/2 for those families with identical twins.

    You then need to modify your total result to include both probability cases based on the probability of identical twins occurring in your set of families.

    Then you will need to adjust things for the case of identical twins having different birthdays because they were born around midnight.

    Then you need to adjust these results to take into account the probabilities of births which are performed by inducing labor or performed by surgery. This will alter the assumption that births occur with equal frequency on each day of the week.

  11. Re:Rubbish on The Tuesday Birthday Problem · · Score: 1

    But, the question more properly is "I have just tossed a 10 pence coin twice and it came up heads once on a Tuesday, what is the probability that the coin toss will came up heads?" And you might also ask where did it land!

  12. Very limited risk on Fifth of Android Apps Expose Private Data · · Score: 2, Interesting

    So any app that want's to access sensitive or private information or incur expensive charges must be designed to include features that might require permissions to convince users to OK those security rights. That limits potentially malicious apps to the category of useful apps as opposed to lighter flames or fart apps.

    Users look at granting permissions with as much detail a they do clicking through license terms. They just don't bother to download the sources, check each line of each file for potential bugs or maliciousness, and build the apps from the downloaded and vetted source. Most simply assume the permissions granted will be used for the stated or implied feature requirements. Most normal software use is based on trust. The user trusts that the developer uses the powers granted in a trustworthy manner.

    Android developers are always trustworthy. Thats why we rarely have malware, viruses or security exploits based on the developer misleading users. Steve Jobs lives in that alternative universe where some software developers might be tempted to misuse the permissions users click through. I live in that somewhat paranoid universe, too. I don't want to grant permissions to big name corporations who limit their ethics to "Don't be Evil." Evil is a line in the sand way beyond "Nasty" or merely "Bad". It probably includes lots of "Illegal" or "Unethical".

  13. I smell B.S. on For-Profit, Illegal Movie Download Sites Threaten MPAA · · Score: 1

    "Just a thought, but maybe if the studios offered a low-cost, for-profit, legitimate download site without DRM, they could receive the profits at the expense of the cyberlockers."

    Try Roku. Buy the box and watch Netflix and Amazon movies and videos for the price of a Netflix subscription.

    No need to save them, watch whenever you want, as much as you want.

    Or, are you just B.S.ing?

  14. Re:The title is misleading on MySQL Outpacing Oracle In Wake of Acquisition · · Score: 1

    Any statistic significantly skewed by adding or subtracting 1 to either your numerator or denominator is a statistic too fragile to support a conclusion.

  15. Re:Funny thing about these trades on Sudden Demand For Logicians On Wall Street · · Score: 1

    "If you watch a stock in real-time you can predict where it will move quite easily."

    Sure, even if we accept your premise of easy price prediction, you lose to these high frequency trading systems. You may know where prices are going, but you then need to execute some trades. Front running systems that can see more of the current bid/ask positions and the relative firmness of these positions will skim their profits from your trades.

  16. Two simple steps on Most Useful OS For High-School Science Education? · · Score: 1

    1) Go all OS X

    2) Move the freed up support staff to teaching programming

  17. Not to worry on Conservative Textbook Curriculum Passes Final Vote In Texas · · Score: 2, Funny

    These things can be fixed by a couple of well placed SAT questions.

    (So, is it time the country to secede from Texas?)

  18. Oh, no on Apple Raises E-book Prices For Everyone · · Score: 1

    I just went out and got some gas.

    Steve Jobs made my corner gas station set all the prices to end with .9 cents!

    He really does dictate the price structure for everything.

  19. Re:Do both on Best Seating Arrangement For a Team of Developers? · · Score: 1

    But, if you are too tight for space consider bunk desks.

  20. Do both on Best Seating Arrangement For a Team of Developers? · · Score: 1

    Have individual private work spaces and a common collaboration area to bring laptops and toss out questions and ideas while you code. Use the rest of the space for a pool table and air hockey room.

  21. How we really did it on The Genius In Apple's Vertical Platform · · Score: 1

    We used each of the top 5 processor architectures over time--6502, M68xxx, ARM, x86, and Power PC! The thing we use now has 128k 6502s with quad M68767s managing them. Runs faster than a pack of lemmings.

    Steve

  22. I can hardly wait on Microsoft Promises To Fully Support OOXML ... Later · · Score: 1

    for Office 14.999999999999999

  23. So Google will leave Canada, too? on Landmark Canadian Hyperlink Case Goes To Supreme Court · · Score: 1

    Restrictions on hyperlinking would probably crush Google's business model. Not much else there other than links.

  24. It's missing way too much on iPad Launches, FCC Teardown Leaked · · Score: 1

    No Phone
    No Camera
    No Printer
    No Scanner
    No Fax
    No DVD Writer
    Just One Screen
    No Removable Batteries
    No Numeric Keypad
    No Barcode Reader
    No Serial Ports
    No Expansion Cards
    No Disk Bays
    No Norton Virus Protection
    No Led Status Lights
    No Handles
    No Dongles
    No Wheels
    NO CAPS LOCK

  25. Re:Early preorders are already in from on Photoshop CS5's Showpiece — Content-Aware Fill · · Score: 1

    Connelly Barnes at Princeton University, who did the "PatchMatch: A Randomized Correspondence Algorithm for Structural Image Editing" SIGGRAPH paper used by Photoshop:
    http://www.cs.princeton.edu/gfx/pubs/Barnes_2009_PAR/index.php

    has some nice video research here:
    Video puppetry: a performative interface for cutout animation:
    http://portal.acm.org/citation.cfm?id=1409077