Slashdot Mirror


User: bityz

bityz's activity in the archive.

Stories
0
Comments
78
First seen
Last seen
Profile
(view on slashdot.org)

Comments · 78

  1. Re:I was excited until... on Faster Algorithm for Sphere Packing Discovered · · Score: 1
    Totally a guess by a layperson....

    <naive>

    it seems that the algorithm depends upon the analogy with a flat two dimensional disk packing problem and this leads to the bound in the ratio of the diameters. I would guess that it would be possible to generalize to a cylindrical annulus with limits on the distance between the inner and outer cylinders. Then the problem becomes (approximately) analogous to optimally vertically stacking planes of packed spheres as you continue to pack in smaller annuli.

    </naive>

  2. TFA redefines "easily" on Computer-Controlled Cyborg Yeast · · Score: 1
    from TFA:

    To begin with, this would just be a manufacturing boon, but it could easily end with computers growing new humans (or skinjobs?) from vats of stem cells.

    Interesting technology. Interesting possibilities. Poor story.

  3. Re:As a synthetic microbiologist on Computer-Controlled Cyborg Yeast · · Score: 1

    Mod Up! Funny (and True)

  4. Re:cosplay on Simulated Mars Mission 'Returns' After 520 Days · · Score: 1

    darn it! where is that "like" button when you need it?

  5. IR != heat (plus definition) on Light Barrier Repels Mosquitoes · · Score: 1

    heat = the energy of a large number of particles & heat = how it feels when the particles are you.

  6. TSA = Transportation Security Administration on US House 'Creator' of TSA Wants To Kill It · · Score: 1

    For those who, like me, didn't know and weren't told on first usage in the summary.

  7. structure? or just a list? on Medical Billing Codes For Injury Via Turtle Among Thousands Created by New Law · · Score: 1

    Does anyone know if it is just a flat list? Or is it an OWL-DL ontology? Or something else?

  8. clinical research on the subject on "Wi-Fi Refugees" Shelter in West Virginia Mountains · · Score: 1

    A good reference for clinical research is: http://www.rfcom.ca/clinic/general.shtml People with real symptoms need sympathy, but clinical research is the only way to discern causes.

  9. Re:The Black Death isn't coming back on Scientists Sequence Black Death Bacteria · · Score: 1

    Basic stuff like "Wash your hands regularly,"

    It is easy to be flippant about this, but even washing your hands is difficult when you don't have clean water. If you want to save lives, step one is clean water.

  10. try physics forums too... on Ask Slashdot: Math Curriculum To Understand General Relativity? · · Score: 1

    Some old memories come up from jmorris42's post recommending Relativity; The Special and the General Theory. I read that when I was in junior-high, did a book-report on it (I wish I had the book report to read now), and phoned the university to ask some anonymous physics professor questions about it. I haven't looked at it since, so I can't really judge how accessible it was.

    I would say that Steven Weinberg's "Gravitation and Cosmology" was the most accessible book that I studied at university.

    A book that tried to be accessible, but was all over the map was Misner, Thorne, and Wheeler's "Gravitation". If you just go through and pick and choose sections, it's probably good too.

    Here's others's opinions at physics forums

    You'll have to decide what you mean by "understanding" the theory. There are many different levels of understanding and only you can decide what you are comfortable with, and what level of understanding meets your needs.

  11. A frighteningly short time on Calling Out GE's Misleading Data Visualizations · · Score: 1

    The real story is summed up by the text of the first graphic: "The world has huge natural gas reserves" "63 years left". A frighteningly short time.

  12. Re:Another nail in the Coffin of the Hard Drive on IBM Creates Multi-Bit Phase Change Memory · · Score: 1

    raises hand... but some of you guys are making me feel young :) (wrapping your own cores?)... somewhat after my punched tape/teletype experience, I built a PC (back then, "built a PC" meant soldering) and eventually moved up to a "stringy floppy"... I think the storage progression in my life went: paper tape, 5 1/4" floppy, stringy floppy, massive 4'x2'x8" 500M harddrive array, 2G SD card. I may have skipped a few steps there :)

  13. Re:Encrypt it then on Google Asks 'Who Cares Where Your Data Is?' · · Score: 1

    It's still a matter of research rather than practical implementation. See this previous slashdot story for more information.

  14. Re:Hacers not the main problem with all digital I& on US Nuclear Power Enters the Digital Age · · Score: 1

    ...Typically redundant systems use instruments from different manufacturers or instruments that are implemented with different technology.

    This is not possible for digital systems because they are too costly to implement multiple times. What this means is that redundant digital control systems use same software.

    Not in well designed systems. In well designed systems there can be hardware, software, and algorithmic redundancy. Different algorithms may be used to calculate the same result and a voting system may be used to pick the correct result with increased reliability or signal an exception.

  15. open to hack? on A "Throne" Fit For a Tech King · · Score: 2

    I wonder if they were security conscious when they developed the remote? ... a brave new world of hacking into your neighborhood toilets, adjusting the temperatures, playing sounds, flushing, raising the seat, perhaps on some models even activating the bidet....

  16. half a model? on All Languages Linked To Common Source · · Score: 2
    Supporting materials for the article can be found here (pdf). The article itself is available to members. From the supporting materials:

    A serial founder effect model of phonemic diversity was used to infer the most likely origin of modern languages, following an approach outlined in studies of human genetic and phenotypic diversity (S6). Under this model, during population expansion, small founder groups are expected to carry less phonemic diversity than their larger parent populations.

    This approach only models the decrease in phonemic diversity due to migration. It does not say anything about how phonemic diversity grows. In essence, it models only half of the system. To me it seems difficult to answer questions of the origin of language without also modeling the growth of phonemic diversity Phonemic variation can be introduced to the region by migration as well (as in the case of the apparent migration of phonemes from Borneo to Madagascar).

    One word of caution: I am not an expert in the field... just a slashdot reader.

  17. Re:More people fly all the time on The End of the "Age of Speed" · · Score: 1

    Unfortunately, physics is implacable, its laws are not subject to negotiation. Until we find ways to (1) move faster than sound without creating a sonic boom and (2) move faster than sound without spending much more fuel, we will be limited to subsonic travel.

    Done. This people behind evacuated tube transport have a solid proposal and patents. I heard they were trying to sell the concept in China.

  18. they may have already gotten you on 'Scrapers' Dig Deep For Data On Web · · Score: 1

    Even though you never post a thing, someone else may post something about you. You may already be tagged in multiple photos on Facebook. You may have loan applications visible on the web. Your information is not entirely under your control - with pervasive digital storage, constant security challenges, and an increasing cultural trend to blurring the line between public and private, there is a growing chance that your information will leak out into the public.

  19. Re:Perhaps we need to validate the CAs? on Comodo Hack May Reshape Browser Security · · Score: 1
    In a building in my work's tech park, they do entagled photon based quantum key distribution via a laser link with another building.

    So if each bank had a bunch of sharks with lasers...

  20. drink up - you won't have choice on Chinese Scientists Make Cow Producing Human-Like Milk · · Score: 1

    without regulated and mandatory GMO labeling they could introduce this milk into your corner store (certainly in Canada anyway) and you wouldn't even know about it.

  21. we're all responsible for what Kevin Bacon does on MS Wants Laws To Block Products Made By Software Pirates · · Score: 1

    This "principle" breaks one of the foundations of modern law - that you should be held responsible for you own actions, and not actions of others which you neither had controller over, nor knowledge of

    somebody please mod up @trims post! If the principle is accepted and applied elsewhere, we're all responsible for whatever Kevin Bacon does.

  22. Re:Time. on Was the Early Universe 2 Dimensional Spacetime? · · Score: 1

    Yes, time is clearly different from space (or else we would live in a Euclidean universe without CPT symmetry). No, time is not treated as a dimension just for convenience - doing so gives great predictive power - explaining local Lorentz invariance as a fundamental principle that goes well beyond the properties of electromagnetism, and, combined with the equivalence principle, leading to predictions of the bending of light (among others). I think the real challenge comes in trying to understand the root difference between the time dimension and the space dimensions without throwing out the theories that we've built over spacetime, just as we've built theories over spacetime without throwing out Newtonian theory.

  23. Re:Duh... on Was the Early Universe 2 Dimensional Spacetime? · · Score: 1

    looks like Charlie Sheen's got another blog...

  24. turning into Digg? (Bury) on See The Supermoon Tonight · · Score: 0

    that's overstating it a bit... have you got a suggestion for varying the mod mechanism or are you just enjoying hyperbole?

  25. good research Vs bad research on Texas Bill Outlaws Discrimination Against Creationists In Academia · · Score: 1

    Can they still discriminate on the basis of quality of research? I hope they are allowed to differentiate between "good research" into alternative theories and "crappy pseudo-research" into alternative theories. I wonder what "good research into creationism" would entail? Do they have to define god? Make observable predictions of god?