wifeoflurker writes "Can someone give me recommendations for a desk chair to give my husband as a Father's Day gift? He currently uses a cheap one he got from Office Max, but I want him to have a really comfortable one. He spends his life in this chair (coding and lurking on Slashdot). I don't have time to research good chairs on the internet today (I'm chasing my 10 month old around, and she seems to get into the most mischief when I'm staring at the computer screen), so I figured a few folks here might share their personal recommendations." Has there been any great progress in the state of the art (of sitting) since the last time readers sought recommendations for back-friendly chairs a few years back, or the perfect computer chair nearly a decade back? Is there even such a thing as a back-friendly chair, or should we all be in astronaut-style lounge workstations?

Tomb Raider: Anniversary coder Mike Krazanowski has outlined a new method for rendering particles using pixel shaders and a little bit of math. "Although this method has been employed in games for many years, this article defines a method using shader technology to more physically represent these volumetric particles. This method will give a more accurate visual representation of the simulated volumes as well as potentially decreasing the necessary number of particles, which in turn will help to improve render performance. It should first be stated that the method defined in this article is limited to particles that represent volumes of sub-particles. It is also noted that the analysis that is to follow assumes a uniform density of the particles. There are methods that would allow the user to define more complex density functions, but that will not be covered here."

In January we discussed a blog entry revealing that Apple had "crippled" its DTrace port. As the author notes in a followup post, to say that DTrace had been "crippled" was at least overstated: "Unfortunately, most reactions seized on a headline paraphrasing a line of the post — albeit with the critical negation omitted." In an updated entry, the poster notes that Apple has made good (so we have too): "One issue was that timer based probes wouldn't fire if certain applications were actively executing (e.g. iTunes). This was evident both by counting periodic probe firings, and by the absence of certain applications when profiling. The good news is that Apple has (quietly) fixed the problem in Mac OS X 10.5.3."

Lucas123 writes "The Boy Scouts of America are looking to the open-source community for help in building software to use for fundraisers, special events, and other functions, for their more than 121,000 local scout troops. Some open source advocates, who are former Boy Scouts, support the idea, despite a few reservations. According to the article, there are no plans for a scout merit badge in open source — but there has been a merit badge in computers since 1967, 'and it is possible that if the program is successful, it could eventually be used by IT-savvy scouts themselves.'"

Petr Krcmar writes "Thunderbird 3.0 Alpha 1 was released last month. A few months before, two main developers left the project and development was moved from the Mozilla Corporation to the Mozilla Messaging, the new subsidiary of the non-profit Mozilla Foundation. We had the opportunity to ask some questions to David Ascher, Mozilla Messaging CEO. The interview is about present and future of Thunderbird and about related projects like SeaMonkey, Spicebird and Mozilla Calendar."

jexrand recommends an interview with John De Goes in which he argues: "The tools market is dead. Open source killed it." The software developer turned president of N-BRAIN explains the effect that open source has had on the developer tools market, and how this forced the company to release the personal edition of UNA free of charge. According to De Goes, selling a source-code editor, even a very good one, is all but impossible in the post-open source era, especially given that, "Some developers would rather quit their job than be forced to use a new editor or IDE." N-BRAIN's decision is but one in a string of similar announcements from tools companies announcing the free release of their previously commercial development tools.

NewYorkCountryLawyer writes "The Last H.O.P.E. ('Hackers on Planet Earth') Conference is set for July 18-20, 2008, at the Hotel Pennsylvania in New York City. The organizers have announced their supplemental speaker list, adding on to the initial list. Topics will include 'Crafting a Security-Enhanced Wikipedia,' 'VoIP (in)security: Italians Do It Better,' 'AntiSocial Networking: Vulnerabilities in Social Nets,' 'SWF and the Malware Tragedy,' 'Simulating the Universe on Supercomputers,' and my personal favorite, 'RIAA Litigations: How the Tech Community Can Help.'"

Ian Lamont writes "In the runup to Apple's WWDC 2008, Chris Tompkins thinks that the iPhone's gaming potential 'might finally put the lackluster Java-based cell phone gaming market to death.' He cites the iPhone's use of Core Animation adapted for ARM processors, which he says allows for the advanced effects of OS X and now OpenGL-accelerated 3D games, as well as the importance of an on-demand store and Internet connection. Tompkins says that while certain genres lend themselves to the iPhone's touch controls, such as real-time strategy games (think StarCraft) the lack of physical controls will force developers to creatively approach the multitouch and accelerometer on the iPhone. His advice to Apple — make a compelling overture to independent game designers, and treat them like rock stars. Tompkins, incidentally, is one of several people who have recently pointed to Apple's mobile gaming potential."

theodp writes "With its just-published patent application for Developing Software Components Based on Brain Lateralization, Microsoft provides yet another example of just how broken the patent system is. Microsoft argues that its 'invention' of having a Program Manager act as an arbitrator/communicator between a group of right-brained software users and left-brained software developers mimics 'the way that the brain communicates between its two distinct hemispheres.' One of the 'inventors' is Ray Ozzie's Technical Strategist. If granted, the patent could be used to exclude others from making, using, or selling the 'invention' for 17 years."

TedCHoward writes "On the heels of the recent mention of HyperCard comes the launch of a brand new site called TileStack. Cnet's Webware blog writes, 'The idea behind it is to bring old HyperCard stacks back to life by putting them on the Web, meaning you can take some of those long lost creations from the late '80s and early '90s and make them working Web apps. You simply upload them to TileStack's servers and they'll be converted and hosted for just you or the entire world to use once again... Since the service runs without Flash... TileStack is perfect for the iPhone and other devices that run on the Web.' They also have a video showing the upload process."

mjasay sends us a link to a CNet story, which begins: "In the '20 percent time' that Google employees have to work on projects of personal interest, it turns out that an increasing number are spending time writing open-source projects for their Macs. Google has long had a fondness for the Mac, with upwards of 6,000 of its 20,000 current employees opting to use the Mac over Windows. It is in the 20 percent employee development time, however, where this statistic becomes interesting. At Google, development time translates into products. The more Mac-friendly employees, the more Mac-related development. The more Mac-related development, the more Google-sponsored Mac-based open-source code. As Google's Mac Developer Playground demonstrates, some of this code is quite interesting."

Verunks points out that senior manager Mark Danks at the Playstation Blog has announced the availability of PS2 and PSP development kits through college programs. He writes: "PlayStation-edu is a program for universities and colleges to get access to PS2 and PSP development kits ... the same ones that professional developers use to make the games you love to play. You get the development software, the hardware, and the SDK to learn and experiment with. SCEA wants to make sure that students who are graduating from college are ready to program on PlayStation hardware and that means getting it into your hands."

pbd points out a story discussing the challenges faced by NASA engineers in designing the code sent to operate the Phoenix Mars Lander. Quoting Computerworld: "On Wednesday, engineers sent up the code to run an actual analysis, but a satellite orbiting Mars, which transfers the data down to the Lander, was offline. Robinson explained that the satellite had been hit with radiation, knocking it into safe mode. 'Space is a harsh environment, and sometimes they just go into safe mode,' he noted. 'It's a minor problem. [The satellite] aborts whatever it was doing and waits for future commanding.' Engineers successfully resent the code on Thursday."

An anonymous reader writes "Mozilla has opened comments for an new experimental browser security policy, dubbed Site Security Policy (SSP), designed to protect against XSS, CSRF, and malware-laced IFRAME attacks which infected over 1.5 million pages Web earlier this year. Security experts and developers are excited because SSP extends control over Web 2.0 applications that allow users to upload/include potentially harmful HTML/JavaScript such as on iGoogle, eBay Auction Listings, Roxer Pages, Windows Live, MySpace / Facebook Widgets, and so on. Banner ads from CDNs have had similar problems with JavaScript malware on social networks. The prototype Firefox SSP add-on aims to provide website owners with granular control over what the third-party content they include is allowed to do and where its supposed to originate. No word if Internet Explorer or Opera will support the initiative."

KernelPie writes "The Linux hardware site Phoronix.com has announced the release of Phoronix Test Suite 1.0, a Linux-based testing platform designed for benchmarking software and hardware. This suite ships with 57 tests and 23 test suites, which contain everything from open-source games to file encryption to encoding software. In addition, they have a global database where users can submit benchmark results and more — with over 1,000 submissions already. This testing software is licensed under the GPLv3 and is available for download."

eldavojohn writes "There's an interesting post over at the Kernel Trap that focuses on a man's attempt to find out how many one-time contributors Linux averages per release. Although imperfect due to some obvious unavoidable flaws, he got a few dirty numbers of 'never seen from agains' in the commits from patches 2.6.11 through 2.6.25 and the numbers are: {63, 148, 128, 92, 96, 122, 137, 140, 135, 95, 136, 153, 179, 179, 304}. This makes sense as another reader, Greg KH, pointed out that the distribution curve is tilted towards one-hit contributions, 'the distribution of all of our users are: 50% only contributed 1 patch; 25% contributed 2; 12% contributed 3; 6% contributed 4 and so on ...'"

An anonymous reader writes "The FreeBSD Project has begun the switch of its source code management system from CVS to Subversion. At this point in time, FreeBSD's developers are making changes to the base system in the Subversion repository. We have a replication system in place that exports our work to the legacy CVS tree on a continuous basis. People who are using our extensive CVS based distribution network (including anoncvs, CVSup, cvsweb, ftp) will not be interrupted by our work-in-progress. We are committed to maintaining the existing CVS based distribution system for at least the support lifetime of all existing 'stable' branches. Security and errata patches will continue to be made available in their usual CVS locations."

blackbearnh recommends an interview with MySQL Director of Technology Brian Aker that O'Reilly Media is running. Aker talks about the merger of MySQL with Sun, the challenges of designing databases for a SOA world, and what the next decade will bring as far as changes to traditional database architecture. Audio is also available. From the interview: "I think there's two things right now that are pushing the changes... The first thing that's going to push the basic old OLCP transactional database world, which... really hasn't [changed] in some time now — is really a change in the number of cores and the move to solid state disks because a lot of the... concept around database is the idea that you don't have access to enough memory. Your disk is slow, can't do random reads very well, and you maybe have one, maybe eight processors but... you look at some of the upper-end hardware and the mini-core stuff,... and you're almost looking at kind of an array of processing that you're doing; you've got access to so many processors. And well the whole story of trying to optimize... around the problem of random I/O being expensive, well that's not that big of a deal when you actually have solid state disks. So that's one whole area I think that will... cause a rethinking in... the standard Jim Gray relational database design."

Movie and Game writer Justin Marks has written an impassioned plea for the industry to concentrate more on artfully story-entwined gameplay, exploring what he thinks major titles are missing these days. "But for the most part, we as an industry are stuck in the same trap that GTA exemplifies. We value narratives in games, we understand their purpose and their necessity, and yet we have no idea how to parse them effectively into the game's interactive structure. As technology gets better, the weaknesses of poor story integration are more exposed."

CWmike writes "Friday Microsoft will demonstrate integration between its new Silverlight browser plug-in and Ruby on Rails. Microsoft's John Lam, a program manager in the dynamic language runtime team, said in a recent blog item: 'Running Rails shows that we are serious when we say that we are going to create a Ruby that runs real Ruby programs. And there isn't a more real Ruby program than Rails.' Also at the event, Microsoft officials will demonstrate IronRuby, a version of the Ruby programming language for Microsoft's .Net platform, running a Ruby on Rails application."