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Domain: case.edu
Stories and comments across the archive that link to case.edu.
Stories · 27
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BASH 4.0 Released
An anonymous reader writes "The widely used Bourne-Again Shell (BASH) version 4.0 is out. The new major release fixes several remaining bugs in the 3.x releases, and introduces a bunch of new features. The most notable new features are associative arrays, improvements to the programmable completion functionality, case-modifying word expansions, co-processes, support for the `**' special glob pattern, and additions to the shell syntax and redirections. The shell has been changed to be more rigorous about parsing commands inside command substitutions, fixing one piece of POSIX non-compliance. Most of us will probably wait for the distros to test the new version and upgrade gradually, but you always have the option of grabbing the source and compiling it yourself. Enjoy." -
Afghan Student Gets 20 Years For Blasphemy
Invisible Pink Unicorn writes "Despite nationwide public support for his initial death sentence, a three-judge appeals court has reduced the sentence of Sayed Parwez Kambakhsh to 20 years in prison. Kambakhsh was charged with circulating an article on women's rights that he found online. From the article: 'Family members have said Kambakhsh was beaten and threatened with death until he signed a confession and that local journalists who expressed support for him were warned they would be arrested if they persisted.'" -
Gamma Ray Burst Visible At Record Distance
Invisible Pink Unicorn writes "A gamma ray burst detected on March 19 by NASA's Swift satellite has set a new record for the most distant object that could be seen with the naked eye. The burst had a measured redshift of 0.94, meaning the explosion took place 7.5 billion years ago. The optical afterglow from heated gas was 2.5 million times more luminous than the most luminous supernova ever recorded, making it the most intrinsically bright object ever observed by humans in the universe. The previous most distant object visible to the naked eye is the nearby galaxy M33, a relatively short 2.9 million light years from Earth." -
Deep Impact Probe to Look for Earth-sized Planets
Invisible Pink Unicorn writes "NASA has given University of Maryland scientists the green light to fly the Deep Impact probe to Comet Hartley 2. The spacecraft will pass Earth on New Year's Eve at the beginning of a more than two-and-a-half-year journey to Hartley 2. During the first six months of the journey to Hartley 2, they will use the larger of the two telescopes on Deep Impact to search for Earth-sized planets around five stars selected as likely candidates for such planets. Upon arriving at the comet, Deep Impact will conduct an extended flyby of Hartley 2 using all three of the spacecraft's instruments — two telescopes with digital color cameras and an infrared spectrometer." -
Solar System Date of Birth Determined
Invisible Pink Unicorn writes "UC Davis researchers have dated the earliest step in the formation of the solar system — when microscopic interstellar dust coalesced into mountain-sized chunks of rock — to 4,568 million years ago, within a range of about 2,080,000 years. In the second stage, mountain-sized masses grew quickly into about 20 Mars-sized planets and, in the third and final stage, these small planets smashed into each other in a series of giant collisions that left the planets we know today. The dates of these intermediary stages are well established. The article abstract is available from Astrophysical Journal Letters." -
Artificial Blood Vessels Grow On Nano-Template
Invisible Pink Unicorn writes "Researchers at MIT have found a way to induce cells to form parallel tube-like structures that could one day lead to tiny engineered blood vessels. The researchers found that they can control the cells' development by growing them on a surface with nano-scale patterning. The work focuses on vascular tissue, which includes capillaries, the tiniest blood vessels. The team has created a surface that can serve as a template to grow capillary tubes aligned in a specific direction. The cells, known as endothelial progenitor cells, not only elongate in the direction of the grooves, but also align themselves along the grooves. That results in a multicellular structure with defined edges — a band structure. Once the band structures form, the researchers apply a commonly used gel that induces cells to form three-dimensional tubes." -
Nanotube-Excreting Bacteria Allow Mass Production
Invisible Pink Unicorn writes "Engineers at the University of California, Riverside have found semiconducting nanotubes produced by living bacteria — a discovery that could help in the creation of a new generation of nanoelectronic devices. This is the first time nanotubes have been shown to be produced by biological rather than chemical means. In a process that is not yet fully understood, the bacterium secretes polysacarides that seem to produce the template for the arsenic-sulfide nanotubes. These nanotubes behave as metals with electrical and photoconductive properties useful in nanoelectronics. The article abstract is available from the Proceedings of the National Academy of Sciences." -
YouTube Breeding Harmful Scientific Misinformation
Invisible Pink Unicorn writes "University of Toronto researchers have uncovered widespread misinformation in videos on YouTube related to vaccination and immunization. In the first-ever study of its kind, they found that over half of the 153 videos analyzed portrayed childhood, HPV, flu and other vaccinations negatively or ambiguously. They also found that videos highly skeptical of vaccinations received more views and better ratings by users than those videos that portray immunizations in a positive light. According to the lead researcher, 'YouTube is increasingly a resource people consult for health information, including vaccination. Our study shows that a significant amount of immunization content on YouTube contradicts the best scientific evidence at large. From a public health perspective, this is very concerning.' An extract from the Journal of the American Medical Association is available online." -
Major Breakthrough In Spintronics Research
Invisible Pink Unicorn writes "Spintronics is the field of research into developing devices that rely on electron spin rather than electron charge to carry information. A major advance has been made by the Naval Research Laboratory (NRL), where they have for the first time generated, modulated, and electrically detected a pure spin current in silicon. Progress in this field is expected to lead to devices which provide higher performance with lower power consumption and heat dissipation. Basic research efforts at NRL and elsewhere have shown that spin angular momentum, another fundamental property of the electron, can be used to store and process information in metal and semiconductor based devices. The article abstract is available from Applied Physics Letters." -
New Type of Fatigue Discovered in Silicon
Invisible Pink Unicorn writes "Researchers at the National Institute of Standards and Technology (NIST) have discovered a phenomenon long thought not to exist. They have demonstrated a mechanical fatigue process that eventually leads to cracks and breakdown in bulk silicon crystals. Silicon — the backbone of the semiconductor industry — has long been believed to be immune to fatigue from cyclic stresses because of the nature of its crystal structure and chemical bonds. However, NIST examination of the silicon used in microscopic systems that incorporate tiny gears, vibrating reeds and other mechanical features reveals stress-induced cracks that can lead to failure. This has important implications for the design of new silicon-based micro-electromechanical system (MEMS) devices that have been proposed for a wide variety of uses. The article abstract is available from Applied Physics Letters." -
Voyager 2 Set to Reach Termination Shock
Invisible Pink Unicorn writes "A computer model simulation developed at UC Riverside has predicted that in late 2007 to early 2008, the interplanetary spacecraft Voyager 2 will cross the termination shock, the spherical shell around the solar system that marks where the solar wind slows down to subsonic speed. At the termination shock, located at 7-8.5 billion miles from the sun, the solar wind is decelerated to less than the speed of sound. The boundary of the termination shock is not fixed, however, but wobbly, fluctuating in both time and distance from the sun, depending on solar activity. Because of this fluctuation, the spacecraft is also predicted to cross the boundary again in middle 2008. The article abstract is available from The Astrophysical Journal." -
Gene Study Supports Single Bering Strait Migration
Invisible Pink Unicorn writes "One of the most comprehensive analyses of genetic variation ever undertaken supports the theory that the ancestors of modern native peoples throughout the Americas came from a single source in East Asia across a northwest land bridge some 12,000 years ago. One particular discovery is of a 'unique genetic variant widespread in natives across both continents — suggesting that the first humans in the Americas came in a single migration or multiple waves from a single source, not in waves of migrations from different sources.' The full article is available online from PLoS." -
Loophole in Windows Random Number Generator
Invisible Pink Unicorn writes "A security loophole in the pseudo-random number generator used by Windows was recently detailed in a paper presented by researchers at the University of Haifa. The team found a way to decipher how the number generator works, and thus compute previous and future encryption keys used by the computer, and eavesdrop on private communication. Their conclusion is that Microsoft needs to improve the way it encodes information. They recommend that Microsoft publish the code of their random number generators as well as of other elements of the Windows security system to enable computer security experts outside Microsoft to evaluate their effectiveness. Although they only checked Windows 2000, they assume that XP and Vista use similar random number generators and may also be vulnerable. The full text of the paper is available in PDF format." -
NIST Opens Competition for a New Hash Algorithm
Invisible Pink Unicorn writes "The National Institute of Standards and Technology has opened a public competition for the development of a new cryptographic hash algorithm, which will be called Secure Hash Algorithm-3 (SHA-3), and will augment the current algorithms specified in the Federal Information Processing Standard (FIPS) 180-2. This is in response to serious attacks reported in recent years against cryptographic hash algorithms, including SHA-1, and because SHA-1 and the SHA-2 family share a similar design. Submissions are being accepted through October 2008, and the competition timeline indicates that a winner will be announced in 2012." -
Genetic Modification Produces Mighty Mouse
Identity Missing writes "An Ohio laboratory has produced genetically modified mice which 'can run five to six kilometres at a speed of 20 meters per minute on a treadmill, for up to six hours before stopping,' as well as a number of other remarkable feats. An enzyme called phosphoenolypyruvate carboxykinases (PEPCK-C) is apparently responsible, and we should hope that the scientists are correct in saying that athletes won't be modifying their genes any time soon to get it, because it apparently makes the mice more aggressive. If anyone feels a super villain coming on, at least we can rely on these Mighty Mice. A video demonstrates just how much these little guys beat the competition." -
Single Nanotube Becomes World's Smallest Radio
Invisible Pink Unicorn writes "Researchers at the National Science Foundation have utilized a single carbon nanotube to perform all the functions of a standard radio, acting as an antenna, tunable filter, amplifier, and demodulator. They were then able to tune in a radio signal generated in the room and play it back through an attached speaker. The device is functional across a bandwidth widely used for commercial radio. From the NSF: 'The source content for the first laboratory test of the radio was "Layla," by Derek and the Dominos, followed soon after by "Good Vibrations" by the Beach Boys.'" -
U.S. Science and Engineering Research Flattens
Invisible Pink Unicorn writes "The National Science Foundation is reporting that the number of published U.S. science and engineering articles plateaued in the 1990s, despite continued increases in funding and personnel for research and development. This came after two decades of continued growth. Since then, flattening has occurred in nearly all U.S. research disciplines and types of institutions. In contrast, Asian and EU research had significant increases in this period. They do point to one positive for the US, however: article quality. According to one of the researchers, 'the more often an article is cited by other publications, the higher quality it's believed to have. While citation is not a perfect indicator, U.S. publications are more highly cited than those from other countries.'" -
Cheap Paint-able Solar Cells Developed
Invisible Pink Unicorn writes "Researchers at New Jersey Institute of Technology have developed an inexpensive solar cell that can be painted or printed on flexible plastic sheets. According to the lead researcher, "Someday homeowners will even be able to print sheets of these solar cells with inexpensive home-based inkjet printers. Consumers can then slap the finished product on a wall, roof or billboard to create their own power stations." The team combined carbon nanotubes with tiny carbon buckyballs (fullerenes) to form snake-like structures. Add sunlight to excite the polymers, and the buckyballs will grab the electrons. The article abstract is available through the Journal of Materials Chemistry, with an illustration of the technology." -
Humans Evolved From a Single Origin In Africa
Invisible Pink Unicorn writes "Researchers at the University of Cambridge have combined studies of global human genetic variations with skull measurements worldwide to show conclusively the validity of the single origin hypothesis. The alternative hypothesis contended that different populations independently evolved from Homo erectus to Home sapiens in different areas. The lead researcher explains, 'The origin of anatomically modern humans has been the focus of much heated debate. Our genetic research shows the further modern humans have migrated from Africa, the more genetic diversity has been lost within a population. However, some have used skull data to argue that modern humans originated in multiple spots around the world. We have combined our genetic data with new measurements of a large sample of skulls to show definitively that modern humans originated from a single area in Sub-saharan Africa.' The article abstract is available from Nature." -
Chameleon Liquid Could Replace LCDs
InvisblePinkUnicorn writes "NewScientist reports on a color-changing liquid that could cheaply replace the color components of standard LCDs. According to researchers at UC Riverside, the liquid 'contains tiny iron oxide particles coated with plastic. It is cheap and easy to make, and could also be used in flexible, rewritable, electronic paper.' From the article: 'The opposing forces of electrostatic repulsion [in the plastic] and magnetic attraction [in the iron oxide] result in the particles arranging themselves into an ordered structure, known as a colloidal "photonic crystal". The colloidal crystal reflects light because the spacing between neighboring particles in the structure is equivalent to the wavelength of light. Also, tuning the spacing slightly alters the exact wavelength, or colour, of light that is reflected. This can easily be done by varying the strength of the magnetic field applied to the crystal.'" -
Finding a Needle in a Haystack of Data
Roland Piquepaille writes "Finding useful information in oceans of data is an increasingly complex problem in many scientific areas. This is why researchers from Case Western Reserve University (CWRU) have created new statistical techniques to isolate useful signals buried in large datasets coming from particle physics experiments, such as the ones run in a particle collider. But their method could also be applied to a broad range of applications, like discovering a new galaxy, monitoring transactions for fraud or identifying the carrier of a virulent disease among millions of people." Case Western has also provided a link to the original paper. [PDF Warning] -
Slashback: Nigritude, Indignation, Artifacts
Slashback brings you updates this evening on a handful of previous and ongoing Slashdot stories: read on below for more on how to manipulate Google rankings, what's wrong with Sun's Java Desktop, Claria's plucky response to L.L. Bean's suit, and a fly in the infinite-twin-primes theory.How to not make friends and influence rankings. Ben Michel contributes an update to the search-engine optimization (SEO) contest mentioned last month, the object of which was for contestants to create a site ranked highest by google for a nonsense phrase, "nigritude ultramarine."
Michel writes "The first phase of the competition ended last Monday, and the winner was the owner of a forum called nigritude ultramarine--previously known as Merkey.net. According to Brandon Suit, the owner of this forum, the key to his winning strategy was "getting high PR backlinks"--having other websites with high Page Ranks link to him and vice versa.
What impact does this have on SEO, and indeed for the rapidly growing search industry in general? The viability of certain underhanded methods in the pursuit of SEO has been clearly reinforced by many of the results of the contest--both Suit and his closest competitor, Philipp Lenssen, posted links in Wiki Sandboxes in order to better their standing. According to Suit, "If you want to manipulate [Google], you can." While search engines certainly have come a long ways from relevance-based searching, it seems that they still have significant changes to make before they can more accurately order results for any given query. The search engines' creators themselves must make countless revisions in their own, perhaps quixotic, quests to create the perfect tools to retrieve relevant data in the vast, ever-expanding realm of the internet."
However, not everyone is as matter-of-fact about this method of increasing search-engine visibility; May Kasahara is one of the webmasters and wiki users who isn't.
Kasahara writes: "The Search Engine Optimization contest previously mentioned on Slashdot has had a detrimental effect on wiki users and admins (including myself) lately , as the words 'Nigritude Ultramarine' have been showing up in wiki sandboxes across the web. A search on UseModWiki's homepage brought me to this informative entry, which in turn led me to Nigritude Ultramarine and the Wiki Sandbox Effect [note -- mentioned last week on Slashdot] and to these accompanying comments, mostly from very annoyed wiki users."
OK, so maybe "infinite" was a strong word. Prof.Phreak writes "Quoting wikipedia: On May 26, 2004, Richard Arenstorf of Vanderbilt University submitted a 38-page proof that there are, in fact, infinitely many twin primes. On June 3, Michel Balazard of Bordeaux reported that Lemma 8 on page 35 is false.[1] As is typical in mathematical proofs, the defect may be correctable or a substitute method may repair or replace the defect. Arenstorf withdrew his proof on June 8, noting "A serious error has been found in the paper, specifically, Lemma 8 is incorrect"."
What are these dashed lines all over your sacred cow? reifman writes "Slashdot's link to my article in the Seattle Weekly helped generate 175,000 page views and numerous letters and comments. The article seemed to touch a nerve in the Mac and Linux communities. I've posted a follow up responding to people's letters."
Updates from the Academic Affairs Division. zenrandom writes "As Case Western has just recently been reported, we may as well mention the initiative that will be connecting many schools in Ohio. Oarnet, a part of the Ohio Supercomputer Center and The Ohio State University is building a statewide academic and research fiber optic network. Composed of multiple metro-rings and over 1600 miles of fiber."
In unrelated college news, Mirell writes "After the FBI previously investigated an open records request filed for the tunnel blueprints at UT, students decide instead to enter via brute force. Hooligans - 1, War Against Terror - 0."
The problem with opening Pandora's Box. WC writes "The previous review on JDS2 ended with no successful installation so it wasn't very helpful on what to expect from the Sun distro. This new review has got a working installation but with a slew of new problems: more installation woes, unusable networking, buggy Nautilus and Mozilla window resizing artifacts among others. The author concludes that JDS2 is --effectively-- nothing but JDS 1.1 with the added Sun server software on top, but the desktop part has the same (and more) issues like JDS1 had."
Looking innocent is not their strong suit. tbase writes "As reported on News.com.com, Claria, formerly known as Gator, has sued L.L. Bean, charging the retailer with filing a frivolous lawsuit against its advertisers. As covered in a previous Slashdot story, L.L. Bean has filed suit against current and former Claria advertisers for advertising via pop ups over L.L. Bean's site."
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Fiber To The Dorm Room
alertpopes writes "Looking for a great education AND a dedicated personal fiber internet connection in your dorm room? Students enrolling at Case Western Reserve University in Cleveland, OH get both! Just don't bring any 10/100 equiptment - it's gigabit only around here. All students have access to over 16,000 fiber ports throughout the university plus 802.11g campus-wide! Registered students must buy a Netgear GC102 Gigabit Ethernet Media Converter through the University eStore for a mere $216.50 to connect to the service, but isn't it worth it? CWRU recommends the purchase of either a Dell or Apple for incoming students to meet networking requirements. The University was voted the 'Most wired Campus' by Yahoo! Internet Life magazine in 1999." -
Fiber To The Dorm Room
alertpopes writes "Looking for a great education AND a dedicated personal fiber internet connection in your dorm room? Students enrolling at Case Western Reserve University in Cleveland, OH get both! Just don't bring any 10/100 equiptment - it's gigabit only around here. All students have access to over 16,000 fiber ports throughout the university plus 802.11g campus-wide! Registered students must buy a Netgear GC102 Gigabit Ethernet Media Converter through the University eStore for a mere $216.50 to connect to the service, but isn't it worth it? CWRU recommends the purchase of either a Dell or Apple for incoming students to meet networking requirements. The University was voted the 'Most wired Campus' by Yahoo! Internet Life magazine in 1999." -
Fiber To The Dorm Room
alertpopes writes "Looking for a great education AND a dedicated personal fiber internet connection in your dorm room? Students enrolling at Case Western Reserve University in Cleveland, OH get both! Just don't bring any 10/100 equiptment - it's gigabit only around here. All students have access to over 16,000 fiber ports throughout the university plus 802.11g campus-wide! Registered students must buy a Netgear GC102 Gigabit Ethernet Media Converter through the University eStore for a mere $216.50 to connect to the service, but isn't it worth it? CWRU recommends the purchase of either a Dell or Apple for incoming students to meet networking requirements. The University was voted the 'Most wired Campus' by Yahoo! Internet Life magazine in 1999." -
Keeping Your Keg Cool Sans Ice
DrLudicrous writes "Case Western Reserve University is reporting that first year physics graduate student Adam Hunnell has come up with the idea for a Keg Wrap, a thermoelectric sheet that will be able to maintain a full keg at 32-35F by running off of wall current or even a car's cigarette lighter. The funding for this project is coming from the National Collegiate Inventors and Innovators Alliance, which has provided Mr. Hunnell with a $20,000 grant. Serious stuff - I'd rather see this than another few million dumped into quantum computing." -
Keeping Your Keg Cool Sans Ice
DrLudicrous writes "Case Western Reserve University is reporting that first year physics graduate student Adam Hunnell has come up with the idea for a Keg Wrap, a thermoelectric sheet that will be able to maintain a full keg at 32-35F by running off of wall current or even a car's cigarette lighter. The funding for this project is coming from the National Collegiate Inventors and Innovators Alliance, which has provided Mr. Hunnell with a $20,000 grant. Serious stuff - I'd rather see this than another few million dumped into quantum computing."