Technology Feed
Consul writes "What is the oldest piece of code that is still in use today, that has not actually been retyped or reimplemented in some way? By 'piece of code,' I'm of course referring to a complete algorithm, and not just a single line." The question would have a different answer if emulation, in multiple layers, is allowed.
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Das Capitolin sends us to Benchmark Reviews for an in-depth feature on DDR3 memory that begins: "These are uncertain financial times we live in today, and the rise and fall of our economy has had [a] direct [effect] on consumer spending. It has already been one full year now that DDR3 has been patiently waiting for the enthusiast community to give it proper consideration, yet [its] success is still undermined by misconceptions and high price. Benchmark Reviews has been testing DDR3 more actively than anyone... Sadly, it might take an article like this to open the eyes of my fellow hardware enthusiast[s] and overclocker[s], because it seems like DDR3 is the technology nobody wants [badly] enough to learn about. Pity, because overclocking is what it's all about."
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Scientists at the European Space Agency are using techniques inspired by their experience with outer space to make new and better products here on Earth. Certain compounds and alloys which are not normally viable can be made in different ways once forces such as gravity are removed from the equation. From BBC News: "The near absence of gravity (microgravity) has a profound influence on the way molten metals come together to form intermetallics and 'standard' alloys. With no 'up' and 'down' in the space environment, a melt doesn't rise and sink as it would at the planet's surface and that means solidification can turn out very differently. 'Gravity induces a lot of segregation of the elements,' explains IMPRESS scientist Dr Guillaume Reinhart. 'For instance, tantalum and niobium are heavy atoms and in doing the solidification process on the ground, they will segregate in different places and produce a very heterogeneous material. If you do this in microgravity, you obtain a very homogenous material because you prevent separation; and you have a much more efficient material, mechanically.'"
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An anonymous reader brings us IBM Developerworks' recent analysis of how the NSA built SELinux to withstand attacks. The article shows us some of the relevant kernel architecture and compares SELinux to a few other approaches. We've discussed SELinux in the past. Quoting: "If you have a program that responds to socket requests but doesn't need to access the file system, then that program should be able to listen on a given socket but not have access to the file system. That way, if the program is exploited in some way, its access is explicitly minimized. This type of control is called mandatory access control (MAC). Another approach to controlling access is role-based access control (RBAC). In RBAC, permissions are provided based on roles that are granted by the security system. The concept of a role differs from that of a traditional group in that a group represents one or more users. A role can represent multiple users, but it also represents the permissions that a set of users can perform. SELinux adds both MAC and RBAC to the GNU/Linux operating system."
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sproketboy writes with news that a developer named Marc Balmer has recently fixed a bug in a bit of BSD code which is roughly 25 years old. In addition to the OSnews summary, you can read Balmer's comments and a technical description of the bug. "This code will not work as expected when seeking to the second entry of a block where the first has been deleted: seekdir() calls readdir() which happily skips the first entry (it has inode set to zero), and advance to the second entry. When the user now calls readdir() to read the directory entry to which he just seekdir()ed, he does not get the second entry but the third. Much to my surprise I not only found this problem in all other BSDs or BSD derived systems like Mac OS X, but also in very old BSD versions. I first checked 4.4BSD Lite 2, and Otto confirmed it is also in 4.2BSD. The bug has been around for roughly 25 years or more."
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Roland Piquepaille writes "According to a Michigan State University (MSU) news release, 'Made-to-order isotopes hold promise on science's frontier,' nuclear physicists can now start a new career as isotope designers. These scientists can build specific rare isotopes to solve scientific problems and open doors to new technologies. The lead researcher says this approach has already given us the Positron Emission Tomography (PET) scan technology. He's now going further, saying that he wants to build objects 100,000 times smaller than the atomic nucleus. He calls this 'femtotechnology.' Also available are additional details and pictures of the tools used for this kind of research, picked from a 415-page design paper." Update: 05/11 14:30 GMT by SS: Readers have noted that the summary inaccurately portrays the scale of the 'femtotechnology.' The MSU researcher refers to "the capacity to construct objects on an even more minute scale, that of the atomic nucleus 100,000 times smaller."
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Wired is running a story about a recent security exercise in which the NSA attacked networks set up by various US military academies. The Army's network scored the highest, put together using Linux and FreeBSD by cadets at West Point. Quoting: "Even with a solid network design and passable software choices, there was an element of intuitiveness required to defend against the NSA, especially once it became clear the agency was using minor, and perhaps somewhat obvious, attacks to screen for sneakier, more serious ones. 'One of the challenges was when they see a scan, deciding if this is it, or if it's a cover,' says [instructor Eric] Dean. Spotting 'cover' attacks meant thinking like the NSA -- something Dean says the cadets did quite well. 'I was surprised at their creativity.' Legal limitations were a surprising obstacle to a realistic exercise. Ideally, the teams would be allowed to attack other schools' networks while also defending their own. But only the NSA, with its arsenal of waivers, loopholes, special authorizations (and heaven knows what else) is allowed to take down a U.S. network."
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or_is_it writes "The company I work for has been growing dramatically and I've been charged with the task of being the gatekeeper for our GFI Spam filters. This involves manually inspecting the subject line/to/from for all caught messages in each filter rule folder. For a company of about 50 people, in one day the number of spam messages can exceed 2,000. Neglect it for a day and you end up with quite a task on your hands. I've made the rules lax enough so important messages can go through, along with a few stray spams, for which I get bitched at. Tighten the rules up and then maybe an important time-sensitive email never gets to its intended recipient, and I get bitched at. Manually reading through all those subject lines is supposed to prevent that, but I'm only human and genuine messages can easily get overlooked. How do larger organizations deal with the spam issue? I can't imagine having one centralized person manually inspecting everyone's junk-mail header is the optimal solution. Purchasing a different commercial mail filter product is a possibility, but I'd like to hear some anecdotal evidence before jumping ship."
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It seems that Sky Captain and the World of Tomorrow may not have been completely off the mark. According to Venture Beat, Airship Ventures has raised capital sufficient to build their first Zeppelin NT (Microsoft Windows reference purely coincidental). The airship will offer rides for up to 12 passengers out of the old Navy Blimp hangars at Moffett Field in Silicon Valley. Airship Ventures notes that airships are already flying safely in Japan and Germany, so now the US will have its chance. Rides will cost from $250 to $500 per person. Esther Dyson is one of the investors.
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The Discovery Channel has done a deal with NASA to enhance old film footage from the space program up to the standards of HD. Discovery will air, in HD, a 6-part special called "When We Left Earth," beginning June 8. Judging by the trailer it should be pretty spectacular, a good introduction to the wonders of space exploration for a new generation. After the show airs, NASA gets the improved footage for their archives.
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robipilot writes "Mac stolen, Mac comes online, owner connects using 'Back to My Mac,' owner takes picture of culprit, and voila, criminal caught. OK, it wasn't quite that simple, but here's an interesting story of using some built-in technology on the Mac to recover a stolen laptop."
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sveard writes of a little problem Google is having that has Gmail acting like an open relay. Compounding the issue is the fact that services such as Hotmail and Yahoo trust Gmail as a source of mail. "A recently-discovered flaw in Gmail is capable of turning Google's e-mail service into a highly effective spam machine. According to the Information Security Research Team (INSERT), Gmail is susceptible to a man-in-the-middle attack that allows a spammer to send thousands of bulk e-mails through Google's SMTP service without fear of detection. This attack bypasses both Google's identity fraud protection mechanisms and the current 500-address limit on bulk e-mail."
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theodp writes "Bill Gates and Ray Ozzie are listed as inventors of the Guardian Angel, which is described in a most unusual Microsoft patent application that should intrigue privacy advocates. In addition to protecting you from possibly diseased people, by detecting body temperatures, the Guardian Angel's 'monitoring component can take note of the number of conversations occurring in a room (and more specifically, a breakdown of the types of people in the room accompanied by a warning for dangerous persons, based on sex offender registration, FBI most wanted, etc.).' The versatile Guardian Angel, Microsoft notes, can also recommend restaurants, advise you on the appropriateness of your jokes, detect that your heartbeat has stopped, display targeted ads on billboards, and block spam."
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From light sabers to teleportation, most movies bungle science.
The Future of Things covered the introduction last month of HP's DreamColor display, with 30 bits/pixel, developed in conjunction with DreamWorks Animation. The display is aimed at the video production, animation, and graphic arts industries. HP promises blacker blacks and whiter whites — though TFoT quotes one source who notes that if they deliver this, it will be due to the back-lighting and not to the number of bits/pixel. No word on the size of the displays that will actually be delivered, or on the price.
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An anonymous reader writes "A Seattle Times editorial notes that the British Columbia Human Rights Tribunal will put author Mark Steyn on trial for his book 'America Alone,' which has angered Muslims in Canada. Steyn is a columnist for the Canadian magazine Maclean's. According to the editorial, British Columbia bans all words and images 'likely to expose a person... to hatred or contempt because of race, religion, age, disability, sex, marital status or sexual orientation.' Steyn is unapologetic, and is advertising his book as a 'Canadian Hate Crime' and daring the tribunal to 'pronounce him bad.'" The Canadian tabloid the National Post has coverage of what it calls "a media storm."
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Science News reports on recent research indicating that any kind of multitasking while driving is dangerous. Not just the obvious distraction of juggling a cell phone, but even talking to a passenger or listening to a book on tape. The researchers used a driving simulator inside an MRI machine to measure brain activations. "Attending to what someone says galvanizes language-related brain areas while simultaneously reducing activity in spatial regions that coordinate driving behavior. This finding suggests that people who combine relatively automatic tasks, such as speech comprehension and car driving, exceed a biological limit on the amount of systematic brain activity they can accommodate at one time, the researchers propose. As a result, the less-ingrained skill — in this case, driving, which is learned long after a person grasps a native language — takes a neural hit."
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A number of readers are sending word that the blogosphere and Twittersphere are alight with reports of Microsoft's new block on messages containing YouTube URLs. Both MSN Messenger and Windows Live Messenger reportedly implement the block. One blogger sniffed the network to discover that such messages receive a NAK from Microsoft's servers. Microsoft has been blocking messages by keyword, as an anti-phishing measure, for some time, but *.youtube.com would not seem to provoke much worry about phishing. Instead, as B.E.T.A Daily speculates, "This block seems to be related to the recent launch of Messenger TV in 20 countries which allows for sharing video clips from MSN Video on messenger." Hard to get away with in an arena where you don't enjoy a monopoly.
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e5rebel writes "Microsoft is launching a program to promote the use of its Windows OS in ultra low-cost PCs. It is an effort to stop Linux dominating this market but Microsoft is insisting on limiting the hardware specs of these devices."
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This roundup covers Zambian bloggers who are discussing “the parastatal madness,” the debate over the constitution of Zambia, the election crisis in Zimbabwe and the African Forum on ICT Best Practices 2008, which took place in Burkina Faso recently.
New Zambia talks about “parastatal madness” saying that:
Secretary to the Treasury, Evans Chibiliti, disclosed earlier this week that a number of companies (Zamtel, Zesco etc) owe the Zambia Revenue Authority (ZRA) billions of Kwacha in unremitted taxes. Apparently ZRA has sufficient legal tools to compel defaulting clients to pay,but the situation is tricky because of ” the strategic importance of the erring firms and institutions”.
The truth of course is that this is not entirely true. One only needs to peruse through the PAC report to see that most of the parastatals are actually owed a lot of money by the government, this is why they never pay taxes! Many of us have previously called for these parastatals to become independent, but reality is that incentives for government to act are very weak. Parastatals help governments to shift debt around! Mr Chibiliti calls this implementation of “various debt swap and cancellation initiatives”.
Issues over matter blogs about the constitutional circus in Zambia:
Legal issues, especially those to do with the constitution making process, stump me, I must admit, but this round of making the constitution is simply baffling. A few years ago, the President, Dr Levy Mwanawasa, State Counsel, against all opposition, appointed a Constitution Review Constitution chaired by renowned lawyer Willa Mung’omba.
The epitome of opposition to the Mung’omba commission was the resignation of Zambia Democratic Congress president, the late Dean Mung’omba from the body just after the first sitting, if I remember correctly.
Forgive me if I am wrong, but Willa and Dean were brothers and yet the latter refused to be part of the charade, and if President Mwanawasa’s sidestepping the results of his own creation is anything to go by, Dean was right to think the whole thing was a joke.
In fact, Mr Mwanawasa has not said very kind things about the job done by the Mung’omba team particularly for suggesting the mode of adopting the resultant document via a Constituent Assembly.
The issue of the high cost of such a venture kept cropping up with the argument that parliament was adequate for enacting the draft constitution into law. But I am stumped even more that the same amount that was to be costly setting up a CA is now being spent on the National Constitution Conference.
Mwankole has concentrated on the Zimbabwe election crisis:
It has been speculated that Hitler may have suffered from a mirage of psychological issues, he was an ideologue with unshakable convictions…….. He did not use language for the purpose of interaction with others, but only for the purpose of dominating others. He endlessly engaged in long-winded and pedantic speeches, with “illogical arguments full of crude comparisons and cheap allusions.
As in the case of Hiltler, I find that Mugabe's direct reports, especially the army chief are pandering to the whims of a mentally ill man.
Much worse how do these policemen beat up their fellow countrymen for voting against Mugabe, during the day and go back to their homes at night, in the very neighbourhood where the people they beat up live?
Finally, ICT Journalist discusses the recent African Forum on ICT Best Practices 2008 held in Burkina Faso:
The level of interest in using technology solutions to address critical development challenges is getting high in Africa. At the same time, there is an essential need to accelerate the penetration and application of technology on the continent, particularly at the public sector level.
Feedback received from various government leaders and international financial institutions on the continent clearly shows that the best way to achieve this objective is to provide the conditions necessary for African governments and advisory institutions to share their own best practices, subsequently creating a roadmap for the future.
In this way, African leaders and the institutions that support them can actively assist in improving the efficiency and effectiveness of public sector institutions through the use of technology and create the capacity for Africa to increase its own competitiveness.
Any institution that provides leadership on this issue would simultaneously achieve a high impact outcome for Africa’s development and an opportunity to distinguish itself from the crowd.
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