Scarred Intellect writes "After attending DigiPen Institute of Technology and deciding that I liked the idea of programming more than programming itself (I still do enjoy it a bit); after getting my AA at a community college with no direction; after much tinkering with engines growing up; after 4 years of service in the US Marine Corps infantry; I have finally decided what I want to do when I grow up: mechanical engineering. The reason is simple: I believe our automobiles can be a lot better (in terms of engine/propulsion) than they are now. Better technology exists, and there's more technology to develop for them. I've taken an intense interest in biodiesel and other clean, alternative energy methods (fuel cells being one of my favorites — second is solar, with wind being last). I figure mechanical engineering will give me a broad understanding of the more specific engineering disciplines. My uncle, also a mechanical engineer, suggested I get a second major in computer science to complement ME. It sounds like a good idea to me; I could mate mechanical processes with computer controls pretty effectively. It should take me 3 to 4 years to complete. What do you think? Is ME + CS a good option, or would ME work better with something else? I'll almost definitely have a math minor coming out of this."

First time accepted submitter zimania writes "At the start of every school year, my kids' teachers invariably ask if any parents have any special skills they can present to the students. As a software engineer, I'd like to give a presentation to the classes about developing software. The tricky part is making a presentation fun, inspirational, and easy enough for 2nd and 4th graders to grasp. Has anybody been brave enough to attempted such a thing? Are there kid-tested prepackaged presentations freely available? Would it be best to present the development of a simple game? Web page? Any advice is welcome."

garymortimer writes "It's not as sexy as the Beast of Kandahar RQ 170 Sentinel, or as well known as a Predator. But we think the bird-shaped drone that crashed in Pakistan last week might be a U.S. special forces tool. At first it was thought to be a homemade job, but packs with FMC (which means 'Fully Mission Capable') written on them, and an American date style as well, really points to something else. sUAS News is not AvWeek or Flight International so getting scoops is tricky whilst holding down a day job. Our exclusive pictures of the damaged C130 that struck an RQ170 was pretty good for us. We would love to identify this drone. Maybe it is just a homebrew job, maybe it's not. It's not a Festo Smartbird, though, the most popular choice of pundits."

First time accepted submitter sjwaste writes "Slashdot posts a fair number of physics stories. Many of us, myself included, don't have the background to understand them. So I'd like to ask the Slashdot math/physics community to construct a curriculum that gets me, an average college grad with two semesters of chemistry, one of calculus, and maybe 2-3 applied statistics courses, all the way to understanding the mathematics of general relativity. What would I need to learn, in what order, and what texts should I use? Before I get killed here, I know this isn't a weekend project, but it seems like it could be fun to do in my spare time for the next ... decade."

First time accepted submitter hairyfish writes "Do we still need time zones? Time zones are a relic of the past, when different parts of the world were isolated, and 12 p.m. was whenever the sun was directly above your specific location. Now, in the Internet age, time is just an arbitrary number, and time zones are just unnecessary complexity. Why can't we scrap time zones altogether, and all just use UTC across the board? So here on the eastern seaboard of Australia, lunchtime will now be at 2 a.m., In New York it will be 4 p.m., and in Moscow it will be 8 a.m. There'll be some pain with the initial changeover, but from then on it's all good. Got a meeting with colleagues on the other side of the world? 4 a.m. means 4 a.m. for everyone. Got a flight landing at 3 p.m.? 3 p.m. now means 3 p.m. for everyone. For DST, you simply change your schedule rather than the clock (i.e. work and school starts an hour earlier during DST months). No confusion ever again. For someone whose work involves travel or communication across time zones, this is the best idea I've ever heard. So why aren't we doing it?"

First time accepted submitter chefmayhem writes "I'm one of a number of volunteer alumni trying to revive a high school summer science enrichment program, PGSS, cut unceremoniously by Pennsylvania in 2009 due to budget issues. Our alumni association has become a 501(c)3 non-profit and we're raising money through donations (over $100K from over 300 donors so far) to try to fund the program in 2012. The idea is that running the program this summer will give us momentum, and something to show off to potential corporate, philanthropic, and other funding sources. Trouble is, some potential donors are concerned that we won't raise enough to run the program this coming summer, and are hesitant to donate, even though the money will (one way or another) go to science education, even if we can't restore the program. Is there a web-based fundraising service, like kickstarter.com, but for charities, which will take pledges (and deal with credit card info, etc) but only charge donors if the goal is reached? It would also be important that non-donor sources (like some support from the state) can also count towards our fundraising goals. This could be a powerful tool for us, as well as other non-profits looking to make a dream come true."

An anonymous reader writes "The IT industry is a lot different than it was 10 years ago; it underwent a huge boom in terms of labor and services required to keep up with the times. Now, we are entering a consolidation phase. The cloud makes it easier for companies to host e-mail, so now instead of organizations having their own Exchange guy, they will outsource it to the cloud. Instead of having a bunch of network engineers, they will deploy wireless and no longer need cabling or current levels of network engineering services. What do you think the long-term consequences of this will be? What skills do you think will be useful in 10 years? Is IT going to put its own out of work, like we did with the post office and libraries?"

dynamo52 writes "I have been tasked with replacing a managed Wi-Fi system for a mid-sized hotel. They have already selected Comcast to provide a 100mbps connection, which unfortunately must come in at one corner of the ~5-acre property. The hotel plans to provide this service for free, so there is no need for any type of billing management system, though it should be secured enough that the parking lot does not become a free Wi-Fi hotspot. Additionally, there is no ethernet infrastructure in place. The existing APs (hidden away in proprietary encasements) seem to be connected via telephone lines and the owners have strongly indicated they would prefer that no new wiring be installed. Have any Slashdotters implemented similar systems? Specifically, what hardware did you use and what special considerations should I take in designing this system?"

An anonymous reader writes "I love the idea of getting an ebook reader primarily for reading research journal papers. However I've heard bad things about the handling of PDFs on the major ones. I don't particularly care for color, but having an e-ink display and the ability to handle PDF/PS docs without conversion would be a major plus. I'd even be open to a hacked Kindle running Linux if it were practical. Does any good solution exist?" A few months ago I found the Asus Eee Note (some folks even figured out how the software works and got it to run other Qt apps), but my hopes were dashed when I learned they had killed it before it even arrived in the U.S. It seems right now that this particular niche is not being served: or is it?

ProgramadorPerdido writes "I have been a developer for 25 years. I learned Basic, VB, C, FoxPro, Cobol, and Assembler, but the languages I used the most were Pascal and Delphi. I then concentrated on a now-non-mainstream language for 11 years, as it was used at work. One day I had the chance to move into Project Management and so I did for the last 2 years. Now, at almost 40 years old, I'm at a crossroad. On one side I realized developing is the thing I like best, while on the other side, the languages I'm most proficient with are not that hot on the market. So I came here looking for any advice on how to advance my career. Should I try to learn web development (html, xhtml, css, php, python, ruby)? Should I learn Java and/or C#? Or am I too old to learn and work a new language? Should I go back to PM work even if I do not like it that much? Any similar experiences?"

FullBandwidth writes "Seems like some intrepid Slashdotters are always getting scoops on the soon-to-be-released handhelds (phones, tablets). What's the best way to get technical information and release dates? Apparently in the U.S., the vendors have to submit a certain amount of documentation that then gets published on the fcc.gov website, but I'm not sure if many of us have time to pore over that site. Are there reliable sites or RSS feeds dedicated to what's the bleeding edge of mobile computing?" I glance at Liliputing more days than I don't, partly because of frequent links to new handhelds and tablets as they hit the FCC. Where else should people look?

chefwear writes "I am thinking of donating retired computers to a local charity for kids. What OS do you think would be best for this? From reading tips regarding the donation of computers, it's widely recommended to keep with the currently installed OS (which is Windows XP in this case). Since XP will be unsupported in about two years, I'm not sure I would be setting the little ones up for success. Would anyone suggest donating a computer with a Linux distro like Ubuntu to a local charity for kids?"

An anonymous reader writes "For a while now there has been a lot of buzz on a new proposed censorship scheme in Turkey. The government wants to crack down on freedom of speech and other rights by preventing us from accessing any websites it deems unsuitable. The reasons for that could be criticism of the government, pornography and basically anything a politician might dislike (YouTube is blocked for example — I'm not sure about Google, etc., because I'm bypassing the filter). Right now the state is using DNS-based filtering which can be circumvented with OpenDNS or proxy services which everybody knows about in Turkey. On August 22, however, a new scheme will go into effect that uses IP-based filtering. Bypassing this by any means is illegal, but I wanted to get some opinions on how this could be done without having to set up a VPN server outside of Turkey and using it as a private proxy."

linkedlinked writes "I'm tired of building my sandcastles on Google's beachfront. I've moved off Docs, Plus, and Analytics, so now it's time to host my own email servers. What are the best self-host open-source email solutions available? I'm looking for 'the full stack' — including a Gmail-competitive web GUI — and don't mind getting my hands dirty to set it up. I leverage most of Gmail's features, including multi-domain support, and fetching from remote POP/IMAP servers. Bonus points: Since I'm a hobbyist, not a sysadmin, and I normally outsource my mail servers, what new security considerations do I need to make in managing these services?"

An anonymous reader writes "Right now, in an email list excluded from the public eye, some bright people are discussing the future of SSL. Under debate is (a) do they allow DV (domain only validation) certificates to continue to exist (exist for e-commerce use? only encryption use?) or do they require a higher degree of certificate validation? (b) Do they allow certificates to be issued with non-unique common names (certificates used on internal networks, think your exchange server) or do they ban the practice? If this were 'hypothetically' a heated debate going on right now and you could chime in, what would you say?"

Hugh Pickens writes "I enjoy mowing my six-acre lawn with my John Deere 757 zero-turn every week, and over the course of the last five years of mowing I have come up with my own most efficient method of getting the job done which takes me about three hours. While completing my task this morning, I decided after I finished to research the subject to discover if there is a method for determining the most efficient path for mowing, and found that Australians Bunkard Polster and Marty Ross wrote last summer about an elegant mathematical presentation of the problem of mowing an irregularly shaped area as efficiently as possible. First we simplify our golf course mowing problem by covering the course with an array of circles with each circle radius equal to the width of the mower disc. Connecting the centers of the circles produces an equilateral triangular grid, with vertices at the circle centers. Following a path consisting of grid edges, there will necessarily be a fair amount of overlap so the statement of the problem is to minimize the overlap by minimizing the number of vertices that are visited more than once which Polster and Ross say is easily achieved by well-known computer search algorithms. Any other tips from Slashdot readers?"

bbowman writes "One of my job responsibilities is to set up the small network for our company's exhibit at the trade shows we attend. The mobile demo devices we use depend upon a reliable Wi-Fi connection to a router I have in the exhibit. In the days leading up to the opening of the trade show, W-iFi connections are reliable and work as expected. However, as soon as the show opens none of our devices can reliable maintain a Wi-Fi connection to the router. The devices we use at the trade shows are Windows-based laptops, iPods/iPads, Android tablets, and a variety of Wi-Fi enabled cell phones. I have tried using channels 1, 6, and 11 (as well as the others) and used different routers (Linksys, D-Link, Netgear) without success. I'm sure it is likely that there are poorly insulated electrical cabling, fluorescent lighting, and other issues that would contribute to Wi-Fi interference in the convention hall. A quick scan shows dozens and dozens of discoverable Wi-Fi networks nearby. If I take the router back to my hotel room, I have zero connection problems. How can I overcome this so that Wi-Fi works reliably in the convention hall?"

johanneswilm writes "Over more than 3 years I have been writing my PhD thesis on the politics of Nicaragua. Being the most professional system for PDF generation, I went with LaTeX, and, to make the text accessible for the editors, I used the LyX editor. Now that the publication date comes near, I found I had to spend considerable time creating a script to convert the manuscript to formats such as Epub as none of the available tools were quite ready to do it automatically. Is LaTeX only good for writers in the natural sciences? Is the open source community boycotting ebook formats, as Richard Stallman has proposed? Are there better tools to do the same?"

kruhft writes "I was recently doing some research into Genetic Programming and found a library through a blog post that looks to be useful. After looking over the code and license, I found that this was the first piece of code I had seen that was protected by a patent, issued on June 19, 1990. I read that patents last for 20 years, meaning that the patent that this code refers to is expired. Is there any way for me to be sure that using this code is safe from any patent troll attacks if I choose to use it? Would rewriting the code keep me from violating any other patents that the author might have regarding the use of such an algorithm? Does the code pass into the public domain after the patent expires?" Note to Chrome users: the above link ("a library") works for me in Firefox, but not in Chrome on Linux; YMMV.

An anonymous reader writes "I recently found out that the company I used to work for is removing all the open source licenses (GPL and MIT) from my work, distributing it as proprietary software and taking all the credit despite the fact that they contributed nothing to it. They are even renaming it something really silly. What should I do?"