Search Results

Search found 19299 results on 772 pages for 'off topic'.

Page 411/772 | < Previous Page | 407 408 409 410 411 412 413 414 415 416 417 418  | Next Page >

  • Security in Robots and Automated Systems

    - by Roger Brinkley
    Alex Dropplinger posted a Freescale blog on Securing Robotics and Automated Systems where she asks the question,“How should we secure robotics and automated systems?”.My first thought on this was duh, make sure your robot is running Java. Java's built-in services for authentication, authorization, encryption/confidentiality, and the like can be leveraged and benefit robotic or autonomous implementations. Leveraging these built-in services and pluggable encryption models of Java makes adding security to an exist bot implementation much easier. But then I thought I should ask an expert on robotics so I fired the question off to Paul Perrone of Perrone Robotics. Paul's build automated vehicles and other forms of embedded devices like auto monitoring of commercial vehicles on highways.He says that most of the works that robots do now are autonomous so it isn't a problem in the short term. But long term projects like collision avoidance technology in automobiles are going to require it.Some of the work he's doing with his Java-based MAX, set of software building blocks containing a wide range of low level and higher level software modules that developers can use to build simple to complex robot and automation applications faster and cheaper, already provide some support for JAUS compliance and because their based on Java, access to standards based security APIs.But, as Paul explained to me, "the bottom line is…it depends on the criticality level of the bot, it's network connectivity, and whether or not a standards compliance is required."

    Read the article

  • RPi and Java Embedded GPIO: Hooking Up Your Wires for Java

    - by hinkmond
    So, you bought your blue jumper wires, your LEDs, your resistors, your breadboard, and your fill of Fry's for the day. How do you hook this cool stuff up to write Java code to blink them LEDs? I'll step you through it. First look at that pinout diagram of the GPIO header that's on your RPi. Find the pins in the corner of your RPi board and make sure to orient it the right way. The upper left corner pin should have the characters "P1" next to it on the board. That pin next to "P1" is your Pin #1 (in the diagram). Then, you can start counting left, right, next row, left, right, next row, left, right, and so on: Pins # 1, 2, next row, 3, 4, next row, 5, 6, and so on. Take one blue jumper wire and connect to Pin # 3 (GPIO0). Connect the other end to a resistor and then the other end of the resistor into the breadboard. Each row of grouped-together holes on a breadboard are connected, so plug in the short-end of a common cathode LED (long-end of a common anode LED) into a hole that is in the same grouping as where the resistor is plugged in. Then, connect the other end of the LED back to Pin # 6 (GND) on the RPi GPIO header. Now you have your first LED connected ready for you to write some Java code to turn it on and off. (As, extra credit you can connect 7 other LEDs the same way to with one lead to Pins # 5, 7, 11, 13, 15, 19 & 21). Whew! That wasn't so bad, was it? Next blog post on this thread will have some Java source code for you to try... Hinkmond

    Read the article

  • Is there a relation between MS SQL Server client licenses and performance

    - by ramdaz
    I have a customer who has an .Net application running on MS SQL Server 2008, supplied by our company as a part of Microsoft Small Business Server. He started off with around 5 users, and hence we had not sold any extra licenses. Today there are 40 users, and there's performance degradation. An MS Consultant said that to improve performance you need to buy extra licenses. Is there a relationship. I am anyway planning to force the customer to buy extra licenses on legal grounds. But will there be any appreciable performance difference too? Advice welcome

    Read the article

  • Using TrueCrypt with File Replication on Windows Server

    - by neildeadman
    We have a few folders that are set to replicate to a DR file server off-site. One of these folders contains a file that is a TrueCrypt volume container. When this file is mounted in TrueCrypt, the file won't replicate (fair enough!). I'm looking at alternatives to improve this situation. One solution I currently have is to have a scheduled task to unmount the volume and then every morning as the volume is needed, have someone mount it. This is a pain slightly because the password is known by a few people (I'm not one and neither are my colleagues who would be performing the mounting operation) so we'd need to continually get them to come over and type it in. The other I had was to have one TrueCrypt container on each server and replicate the contents when they are mounted. I wasn't able to get TrueCrypt to see the mounted volume so I guess this is a no go. Any other solutions I have missed or a fix for the above?

    Read the article

  • Is there an excuse for short variable names?

    - by KChaloux
    This has become a large frustration with the codebase I'm currently working in; many of our variable names are short and undescriptive. I'm the only developer left on the project, and there isn't documentation as to what most of them do, so I have to spend extra time tracking down what they represent. For example, I was reading over some code that updates the definition of an optical surface. The variables set at the start were as follows: double dR, dCV, dK, dDin, dDout, dRin, dRout dR = Convert.ToDouble(_tblAsphere.Rows[0].ItemArray.GetValue(1)); dCV = convert.ToDouble(_tblAsphere.Rows[1].ItemArray.GetValue(1)); ... and so on Maybe it's just me, but it told me essentially nothing about what they represented, which made understanding the code further down difficult. All I knew was that it was a variable parsed out specific row from a specific table, somewhere. After some searching, I found out what they meant: dR = radius dCV = curvature dK = conic constant dDin = inner aperture dDout = outer aperture dRin = inner radius dRout = outer radius I renamed them to essentially what I have up there. It lengthens some lines, but I feel like that's a fair trade off. This kind of naming scheme is used throughout a lot of the code however. I'm not sure if it's an artifact from developers who learned by working with older systems, or if there's a deeper reason behind it. Is there a good reason to name variables this way, or am I justified in updating them to more descriptive names as I come across them?

    Read the article

  • Not allowed to upload .HTML files to my own DNN Site: Is it normal?

    - by Jake M
    My Question: Our webhost provider wont make it so we can upload .html files to our DNN site trhough the DNN File Manager page. Is that normal, should I push them to allow me to do this? We have recently transferred our website to a Dot Net Nuke run website. We originally had our website on a Linux server with Python scripts handling the backend. Obviously we now have a Windows server running .NET with ASP .NET code on the backend. Our webhost is a local Australian company. And they are saying we cant upload any .html files to the main part of the server, ie, www.ourdomain.com/Portals/0/. They are saying that the only place I can upload .html files is via FTP to this folder *www.ourdomain.com/Portals/0/html_content* This is a major problem for me because I am trying to upload my own skin which means I need to upload a main.html file to www.ourdomain.com/Portals/0/skins/myskin/ but they wont let me?! I guess what I am asking is, is this normal practice, why would they not allow this? As an experienced web admin for Linux servers and as someone who is used to being able to do whatever I want on my OWN server this is someing that really pis$%s me off!

    Read the article

  • How can I figure out exactly which process is keeping my Mac from going to sleep and waking it up?

    - by pattern86
    I have read this knowledgebase article, but would like to know if there's a way to tell exactly which process is causing my Mac not to follow the sleep schedule I have set in System Preferences Energy Saver. I have narrowed it down to a being a process and will explain why I think so (see below). I am running OS X (10.6.5) on the new iMac 27" and I am certain it's not the following: The "Wake for Network Access" checkbox in Energy Saver settings (has never been a previous issue) Peripherals (has never been a previous issue) Any active GUI application (all are closed) Additional USB/FireWire drives (none are connected) Bluetooth (it's off) Sharing services (has never been a previous issue) The symptoms are as follows: The computer doesn't go to sleep at the predetermined time. It will wake up some number of hours after being put manually to sleep (but not within the first few seconds/minutes.) Is there a specific string I should be looking for in Console? I have tried searching for "wake" and "sleep" but can't make total sense of the results.

    Read the article

  • HLSL How to flip geometry horizontally

    - by cubrman
    I want to flip my asymmetric 3d model horizontally in the vertex shader alongside an arbitrary plane parallel to the YZ plane. This should switch everything for the model from the left hand side to the right hand side (like flipping it in Photoshop). Doing it in pixel shader would be a huge computational cost (extra RT, more fullscreen samples...), so it must be done in the vertex shader. Once more: this is NOT reflection, i need to flip THE WHOLE MODEL. I thought I could simply do the following: Turn off culling. Run the following code in the vertex shader: input.Position = mul(input.Position, World); // World[3][0] holds x value of the model's pivot in the World. if (input.Position.x <= World[3][0]) input.Position.x += World[3][0] - input.Position.x; else input.Position.x -= input.Position.x - World[3][0]; ... The model is never drawn. Where am I wrong? I presume that messes up the index buffer. Can something be done about it? P.S. it's INSANELY HARD to format code here. Thanks to Panda I found my problem. SOLUTION: // Do thins before anything else in the vertex shader. Position.x *= -1; // To invert alongside the object's YZ plane.

    Read the article

  • Proper updating of GeoClipMaps

    - by thr
    I have been working on an implementation of gpu-based geo clip maps, but there is a section of the GPU Gems 2 article that i just can't seem to understand, specifically this paragraph and more precisely the bolded part: The choice of grid size n = 2k-1 has the further advantage that the finer level is never exactly centered with respect to its parent next-coarser level. In other words, it is always offset by 1 grid unit either left or right, as well as either top or bottom (see Figure 2-4), depending on the position of the viewpoint. In fact, it is necessary to allow a finer level to shift while its next-coarser level stays fixed, and therefore the finer level must sometimes be off-center with respect to the next-coarser level. An alternative choice of grid size, such as n = 2k-3, would provide the possibility for exact centering Let's take an example image from the article: My "understanding" of the way the clip maps were update was that you floor the position of the viewpoint to an int, and such get the center vertex point if this is not the same as the previous center point, you update the entire map. Now, this obviously is not the case - but what I am failing to understand is this: If you look at the image above, if the viewpoint was to move one unit to the right, then the inner ring (the one just around the view point + white center square) would end up getting a 1 unit space on both the left and right side of itself. But there is nothing in the paper that deals with this, what i mean is that it would end up looking like this (excuse my crummy cut-and-paste editing of the above image): This is obviously not a valid state of the. So, would the solution be that a clip ring (layer) can only move in increments of the ring/layer it's contained within? Wouldn't this end up being very restrictive? I feel like I am missing some crucial understanding of parts of the algorithm, but I have been over both this paper and the original paper from 2004 and I just can't see what I am not getting.

    Read the article

  • Applications: Some more marble fun!

    - by TechTwaddle
    Well, yesterday night I was watching a tutorial on XNA when I came across this neat little trick. It was a simple XNA application with a Windows Phone logo in it and whenever the user clicked on the device the logo would move towards the click point, and I couldn't resist experimenting with the marble (; The code is written in C# using CF3.5. Here is a video of the demo,   You probably noticed that the motion of the marble towards the click point (destination) is not linear. The marble starts off with a high velocity and slows down as it reaches its destination. This is achieved by making the speed of the marble a function of the distance between marble's current position and the destination, so as the marble approaches the destination point, the distance between them reduces and so does the speed, until it becomes zero. More on the code and the logic behind it in the next post. What I'd like to do next is, instead of making the marble stop at the click point, it should continue to move beyond it, bounce around the screen a few times and eventually come to a stop after a while. Let's see how that goes.

    Read the article

  • Can I lose files when changing security on an XP drive within Windows 7?

    - by Will
    Hard to come up with a title for this one, sheesh. Have a friend whose computer went down. He asked me to get all his data off his drive. His old computer was running XP. So, I've plugged it into my Windows 7 computer. When I attempt to open up his Documents and Settings folder, I get prompted to elevate in order to "permanently get access to this folder." If I do this, will I be able to access the files in this directory, or will all the current files be lost? I may be overly paranoid about this, but I can't find any information about exactly what will happen when I do this. TIA.

    Read the article

  • Why don't C++ Game Developers use the boost library?

    - by James
    So if you spend any time viewing / answering questions over on Stack Overflow under the C++ tag, you will quickly notice that just about everybody uses the boost library; some would even say that if you aren't using it, you're not writing "real' C++ (I disagree, but that's not the point). But then there is the game industry, which is well known for using C++ and not using boost. I can't help but wonder why that is. I don't care to use boost because I write games (now) as a hobby, and part of that hobby is implementing what I need when I am able to and using off-the-shelf libraries when I can't. But that is just me. Why don't game developers, in general, use the boost library? Is it performance or memory concerns? Style? Something Else? I was about to ask this on stack overflow, but I figured the question is better asked here. EDIT : I realize I can't speak for all game programmers and I haven't seen all game projects, so I can't say game developers never use boost; this is simply my experience. Allow me to edit my question to also ask, if you do use boost, why did you choose to use it?

    Read the article

  • SQL Server tempdb size seems large, is this normal?

    - by Abe Miessler
    From what I understand the system database is used to hold temporary tables, intermediate results and other temporary information. On one of my database instances I have a tempdb that is seems very large (30GB). This database has not been modified (as in "last modified date" on the mdf file) in over a week. Is it normal to have the temp db remain that large for that long of a period? It seems to me that it should be updating fairly often and returning space that it is using fairly quickly... Am I way off here or is SQL Server doing something weird? FYI: This is a SharePoint 2010 database, not sure if that makes a difference.

    Read the article

  • Geekswithblogs.net Influencer Programm

    - by Staff of Geeks
    Recently, @StaffOfGeeks announced to a select group of bloggers, the Geekswithblogs.net Influencer Program.  Here is a little detail about the program. Description (from Influencer Page): Geekswithblogs.net is a community of bloggers passionate about contributing information to the world of developers and IT professionals. Our bloggers are some of the best in the world and receive honors on a regular basis for outside companies (such as the Microsoft© MVP Program). The Geekswithblogs.net Influencer Program is our way as Staff of Geeks to show our appreciation for those bloggers who have the greatest influence on the site. Each influencer in the program is awarded by the amount of posts, views, and comments they receive on their posts in the previous quarter. Each quarter, we select the top 25 bloggers of influence and give them special access to products and services we have obtained through our network of partners. Here is how it works.  Each quarter we select the top 25 bloggers bases on the amount of posts that created in that quarter, and apply points to the views and comments those posts receive.  The selection is purely off of the numbers, we do not select any based on any other basis.  In fact in the first round, several of our key bloggers did not qualify in the top 25.  Though they are still loved dearly, we wanted a program that anyone could be a part of if they put in the hard work. This said, the first quarter ends at the end of March and we will have another round of influencers joining us.  Keep the posts rolling and maybe you will be selected as an influencer! Visit the influencers page to see who has the greatest influence on Geekswithblogs right now.   Technorati Tags: Geekswithblogs

    Read the article

  • Oracle SOA Suite on Virtual Box

    - by sravan.sarraju(at)oracle.com
    Recently I have started my journey Oracle SOA Suite and the first big hurdle everyone warned me off is setting up Oracle SOA Suite environment in our personal machine for learning. My laziness pushed me to search for much easier way than regular all download, configuration stuff and bang..! I found in the solution oracle site itself. Oracle SOA Suite on Virtual Box. For those who are not aware of Virtual Box, it’s a virtualization software which enables u to install multiple operating systems on a virtual hard drive which in turn managed by Virtual Box. In short pack ur Operating System, Software, Files everything into a VM and carry it wherever u go. Coming to Oracle SOA Suite, Oracle is offering a prebuilt VM for download which u can mount on ur Virtual box and that all you need. Here is the link for Virtual Box image of Oracle SOA Suite. Virtual Box can be downloaded here It’s a huge download. I’m yet to try it myself. Will get back to my writer again once I’m done.

    Read the article

  • Port Forwarding on Actiontec GT704-WG Router Issues

    - by adamweeks
    I am trying to setup a server at customer's location that has the Actiontec GT704-WG DSL router. The port forwarding it not working at all. Here's the details: Server: OpenSuse Linux box with a static IP address of 192.168.1.200 Application running accepting connections on port 8060 Firewall disabled Local connections (within the network) working properly Router: Updated to latest firmware available DHCP range set to 192.168.1.69-192.168.1.199 to not have any conflicts with the server Firewall set to "off" Rule set in the "Applications" setting to forward 8060 TCP and UDP to 192.168.1.200 machine (I've tried using the "TCP,UDP" option as well as both individual options) I've also tried just simply putting the server in the DMZ to see if I could connect to anything, but still nothing. Looking for any clues before I call and waste hours explaining the issue to tech support.

    Read the article

  • VirtualBox CPU usage 100% on host

    - by Sarveshwar
    I have installed VirtualBox 3.1.2 (latest) on my Windows 7 (x64). In the VirtualBox I've installed Windows 7 (x64). I have 4 GB RAM installed. The guest has been assigned a 1536 MB RAM. Sometimes the CPU usage on the host goes 100%. It happens everytime, in a few minutes, after starting the guest. Then it stops responding. Then I have to "power off the machine" from the menu without doing a proper shutdown. It happens with Windows XP as guest too (even when the RAM amount assigned to it was the same). What is the problem?

    Read the article

  • Does Agile force developers to work more?

    - by Shooshpanchick
    Looking at common Agile practices it seems to me that they (intentionally or unintentionally?) force developer to spend more time actually working as opposed to reading blogs/articles, chatting, coffee breaks and just plain procrastinating. In particular: 1) Pair programming - the biggest work-forcer, just because it is inconvenient to do all that procrastination when there are two of you sitting together. 2) Short stories - when you have a HUGE chunk of work that must be done in e.g. a month, it is pretty common to slack off in the first three weeks and switch to OMG DEADLINE mode for the last one. And with the little chunks (that must be done in a day or less) it is exact opposite - you feel that time is tight, there is no space for maneuvering, and you will be held accountable for the task pretty soon, so you start working immediately. 3) Team communication and cohesion - when you underperform in a slow, distanced and silent environment it may feel ok, but when at the end of the day at Scrum meeting everyone boasts what they have accomplished and you have nothing to say you may actually feel ashamed. 4) Testing and feedback - again, it prevents you from keeping tasks "99% ready" (when it's actually around 20%) until the deadline suddenly happens. Do you feel that under Agile you work more than under "conventional" methodologies? Is this pressure compensated by the more comfortable environment and by the feeling of actually getting right things done quickly?

    Read the article

  • Keep lan connection alive while going to sleep

    - by user18151
    Is it possible to keep lan connection alive when going to sleep? Although I would like a laptop independent(in general) answer, my laptop is Thinkpad T500 and the power manager shows in PCI options, the following three option regarding saving link state power: Off, moderate, maximum. Also instant resume apparently does something different, so that isn't much help either. I'm on Windows-7. Here's why: I'm a student, and currently I keep my laptop on almost all the time, but sometimes I sleep it and then I require to check something, so I turn it on. But then internet starts in at least a minute. So I avoid even putting it to sleep. I want that the internet connection should persist, so that I can put it to sleep to avoid power consumption.

    Read the article

  • What hardware makes a good MongoDB Server ? Where to get it ?

    - by João Pinto Jerónimo
    Suppose you're on dell.com right now and you're buying a server to run your MongoDB database for your small startup. You will have to handle literally tens of thousands of writes and reads per minute (but small objects). Would you go for 2 processors ? Invest more on RAM ? I've heard (correct me if I'm wrong) MongoDB handles the most it can on the RAM and then flushes everything to the disk, in that case I should invest on a CPU with a large L2 cache, probably 40GB of RAM and a solid state drive.. right ? Would I be better off with a high end (~$11,309, 2 expensive processors, 96GB of RAM) server or 2x(~$6,419, 2 expensive processors, 12GB of RAM) servers ? Is Dell ok or do you have better sugestions ? (I'm outside the US, on Portugal)

    Read the article

  • My Macbook Pro wifi intermittently won't turn on sometimes after sleep, does anyone know how to solve this?

    - by Simon
    Hello, My current-generation MacBook Pro 15" (10.6.5) intermittently has problems turning the wifi (airport) on. The usual symptom happens when I: Sleep the machine Open from sleep Wifi is off (the airport signal is blank) I click on airport icon-Turn Airport On, but nothing happens. I googled around a bit and found one recommended solution where I delete the "automatic" location and create a new one and enable the wifi, or I delete the "AirPort" from the location and add it back, but neither of these resolve the problem. I also called AppleCare and they had me delete /Library/SystemConfiguration and restart, but that hasn't solved the problem. I have to reboot, which is very painful. Does anyone have any idea of how to solve this?

    Read the article

  • Amazon CloudFormations and Oracle Virtual Assembly Builder

    - by llaszews
    Yesterday I blogged about AWS AMIs and Oracle VM templates. These are great mechanisms to stand up an initial cloud environment. However, they don't provide the capability to manage, provision and update an environment once it is up and running. This is where AWS Cloud Formations and Oracle Virtual Assembly Builder comes into play. In a way, these tools/frameworks pick up where AMIs and VM templates leave off. Once again, there a similar offers from AWS and Oracle that compliant and also overlap with each other. Let's start by looking at the definitions: AWS CloudFormation gives developers and systems administrators an easy way to create and manage a collection of related AWS resources, provisioning and updating them in an orderly and predictable fashion. AWS CloudFormations Oracle Virtual Assembly Builder - Oracle Virtual Assembly Builder makes it possible for administrators to quickly configure and provision entire multi-tier enterprise applications onto virtualized and cloud environments. Oracle VM Builder As with the discussion around should you use AMI or VM Templates, there are pros and cons to each: 1. CloudFormation is JSON, Assembly Builder is GUI and CLI 2. VM Templates can be used in any private or public cloud environment. Of course, CloudFormations is tied to AWS public cloud

    Read the article

  • Cannot load viper-mode in Emacs24

    - by Andrew-Dufresne
    Every time I try to load viper-mode in Emacs24 using M-x viper-mode, I get error Wrong type argument: symbolp, (quote 3) I have observed it happens when I try to load viper-mode for the after opening Emacs or after I have issued M-x viper-go-away So once I get this error and run the same command again, viper-mode loads successfully. When I use toggle-viper-mode to turn it off, viper-mode goes away successfully. But when I try to turn it back on using toggle-viper-mode again, I get the above stated error. I have to use viper-go-away and then M-x viper-mode twice to get it back working. How can I get rid of this error?

    Read the article

  • Lexmark E240 printing issues

    - by NoamH
    I have Lexmark E240 laser printer. I have been using it with 12.04 (32bit) for 2 years with no significant issues. Since lexmark does not support this printer on linux, I used alternatives drivers that were suggested by the community, such as HP-lasterjet, E238, generic PS, etc. They all worked fine, more or less. After upgrading to 14.04 (64bit fresh install) I tried to configure the printer as before, but now I have problems. The test page is ok, but when printing, most of the times, the first page in the document will be printed very partially and in 300% zoom. Next page might be ok. If I turn off the printer and back on, the first page might be ok, but in the next print job, it will be broken again. I used all the above printer options. Same results. I did NOT install the lexmark drivers since they are intended for 12.04 and the package manager report that it is in "bad quality" (don't know why). Does anyone has any experience with this printer in 14.04 64bit ?

    Read the article

  • Do you find using a VPS worthwhile?

    - by Grant Palin
    I am currently on shared hosting, and have been recently looking at the idea of switching to a VPS instead. From what I have gathered, a VPS allows you more control over your server setup. But at the same time you have to set it up yourself, and maintain it. This is the bit I am asking about... Despite the power and flexibility you get from using a VPS, you have to take care of it yourself. Is it worth it? Some context: I am primarily a Windows user, but have been tinkering with various Linux distros off and on for several years. I know enough about Linux to get by, or to be dangerous - take your pick. I've also done some tinkering on my current host, but have no serious sysadmin experience. There's always a first time!

    Read the article

< Previous Page | 407 408 409 410 411 412 413 414 415 416 417 418  | Next Page >