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• Choices in Architecture, Design, Algorithms, Data Structures for effective RDF Reasoning and Querying in a Big Data Environment [on hold]

  - by user2891213

  As part of my academic project I would like to know what choices in Architecture, Design, Algorithms, Data Structures do we need in order to provide effective and efficient RDF Reasoning and Querying in a Big Data Environment. Basically I want to get info regarding below points: What are the Systems and Software to get appropriate Architecture? What kind of API layer(s) would we need on top of the Big Data stores, to make this possible? The Indexing structures we will need. The appropriate Algorithms, and appropriate Algorithms for Query Planning across Big Data stores. The Performance Analysis and Cost Models we will need to justify the design decisions we have made along the way. Can anyone please provide pointers.. Thanks, David

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• How to get nicer error-messages in this bash-script?

  - by moata_u

  I'm trying to catch any error when run a command in order to write a log-file / report I've tried this code: function valid (){ if [ $? -eq 0 ]; then echo "$var1" ": status : OK" else echo "$var1" ": status : ERROR" fi } function save(){ sed -i "/:@/c connection.url=jdbc:oracle:thin:@$ip:1521:$dataBase" $search var1="adding database ip" valid $var1 sed -i "/connection.username/c connection.username=$name" #$search var1="addning database SID" valid $var1 } save The output looks like this: adding database ip : status : OK sed: no input file But I want it to look like this: adding database ip : status : OK sed: no input file : status : ERROR" or this: adding database ip : status : OK addning database SID : status : ERROR" I've been trying, but it's not working with me. :(

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• Problem installing NVIDIA-Linux-x86-302.07.run in 12.04

  - by paj100

  I have a catch 22 problem in trying to install this driver (NVIDIA-Linux-x86-302.07.run) to set my screen to its native resolution of 1280x1024 (hpL1906). Problem is that in order to install this driver, I need to stop the XServer but when I do this (sudo service lightdm stop), my screen goes blank and displays the message - Out of Range 1280X1024 need to reset (or something similar) - and I can go no further. So, I cannot install NVIDIA-Linux-x86-302.07.run without stopping lightdm but when I do so, I can no longer see anything on the screen or go further to install the driver that would let me adjust the resolution. Any advice on getting out of this loop would be greatly appreciated.

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• robots.txt dissalow url containing string with a '/' at the end

  - by thanili

  i have a website with thousands of dynamic pages. I want to use the robots.txt file in order to dissalow certain url patterns corresponding to pages with duplicate content. For example i have a page for article itemA belonging to category catA/subcatA, with URL: /catA/subcatA/itemA this is the URL that i want to be indexed from google. this article is also visible via tagging in various other places in the web site. The URLs produced via tagging is like: /tagA1/itemA this URL i want NOT to be indexed from google. However i want to have indexed all tag listings: /tagA1 so how can i achieve this? dissalow URLs of including a specific string with a '/' at the end? /tagA1/ itemA - dissalow /tagA1 - allow

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• Best way to manage a changelog

  - by Gnial0id

  I'm currently developing a WinForm application. In order to inform the client about the improvements and corrections made during the last version, I would like to manage and display a changelog. I mostly found existing changelog on website (the term changelog is pretty used) or explanation on how to manage the release numbers, which I don't care. So, these are my questions: Is there a good practice in changelog management (using XML, pure text in the app, etc.) in a desktop application ? What is the best way to display it (external website, inside the winform application) ? Thanks.

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• Cisco ASA 5505 - InterVLAN NAT Exemptions Implementation not working

  - by Brandon Bearden

  Short version is we cannot communicate between our subnets. We have a Cisco ASA 5505 we are using for our network router. We have a Netgear L3 switch behind that with 10 vlans. Each VLAN is on its own subnet. (10.0.10.x/24, 10.0.11.x/24, etc) So ASA Switch Hosts We have PAT for each subnet to our outside interface. Each subnet NATs out properly. I have NAT exemption enabled for 2 of the subnets (eventually I will need all, but am just testing at the moment). Config is here: http://pastebin.com/pDsG7hsh I have tried multiple ways for the NAT exemption to allow all traffic from our inside VLANS. At this point in time I am trying to get "Engineering" to communicate with all hosts on "AuthUser". I can ping some hosts, but not as many as if I am directly on the interface. I can reach a port 80 service, but not 443. I cannot access anything via hostname or NetBIOS. What am I missing to allow higher security level interfaces to fully communicate with lower security level interfaces? Thx!

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• Java installation for Solaris Studio 12.2

  - by DemiSheep

  I have Solaris Studio almost working. My only issue seems to be Java. Here is what I get: ============================ aflory@aflory-laptop:~$ solstudio & [1] 1723 aflory@aflory-laptop:~$ Solaris Studio is unable to find a supported version of Java. Solaris Studio supports Java version 1.6.0_13 and newer and looks for a valid Java installation in the following order: 1) Location specified with --jdkhome command line option 2) In PATH environment variable 3) At /usr/jdk/latest location, if exists 4) At /usr/java location, if exists 5) At /usr location, if exists ============================ I try typing --jdkhome in the console but I get an command not found error. I have added the following to my /home/aflory/.bashrc file: PATH=$PATH:/usr/java/jdk1.6.0_24/bin:/home/aflory/solstudio12.2/bin export PATH I am running Ubuntu 10.04 64bit. I tried installing the 64 bit version of Java JDK, then I tried installing the 32bit version of Java JDK. I don't believe there is a 64bit version of Solaris Studio.

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• Apache with multiple domains, single IP, VirtualHost is catching the wrong traffic

  - by apuschak

  I have a SOAP web service I am providing on a apache web server. There are 6 different clients (IPs) that request data and 3 of them are hitting the wrong domain. I am trying to find a way to log which domain name the requests are coming from. Details: ServerA is the primary ServerB is the backup domain1.com - the domain the web service is on domain2.com - a seperate domain that server seperate content on ServerB ServerA is standalone for now with its own IP and DNS from domain1.com. This works for everyone. ServerB is a backup for the web service, but it already hosts domain2.com. I added entries into the apache configuration file like: <VirtualHost *:443> ServerName domain2.com DocumentRoot /var/www/html/ CustomLog logs/access_log_domain2443 common ErrorLog logs/ssl_error_log_domain2443 LogLevel debug SSLEngine on ... etc SSL directives ... </VirtualHost> I have these for both 80 and 443 for domain1 and domain2 with domain1 being second. The problem is when we switch DNS for domain1 from ServerA to ServerB, 3 out of the 6 clients show up in the debug logs as hitting domain2.com instead of domain1.com and fail their web service request because domain2.com is first in the apache configuration file and catching all requests that don't match other virtualhosts, namely domain1.com. I don't know if they are hitting www.domain1.com, domain1.com (although I added entries for both) or using the external IP address or something else. Is there a way to see which URL they are hitting not just the page request or someother way to see why the first domain is catching traffic meant for the second listed domain? In the meantime, I've put domain1.com higher in the apache configuration than domain2.com. Now it catches the requests for all clients and works, however I don't know what it is catching and would like to make domain2.com the first entry again with a correct entry for domain1.com, for however they are hitting it. Thank you for your help! Andrew

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• Trying to install/dual boot

  - by user292236

  I have widows 8 (Pre-installed), and I was not a fan. So I thought I would try Ubuntu as many people from what I hear that use it, like it, and hey, free OS. Well before I was able to do all the instalations, I had to goto work, so my girlfriend (whio is not at all tech savy) decided to help. She told me she installed it, (It popped up with a thank you for installing message) She then shut it off. When she turned it on, when I turn it on, I boot right to windows, I have never installed a secondary OS. And I was hoping someone with more experiance than I could walk me through what I need to do in order to be able to dual boot Ubuntu version is 14.04 and 64bit

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• Separating merged array of arithmetic and geometric series [closed]

  - by user1814037

  Possible Duplicate: Separating merged array of arithmetic and geometric series My friend asked me an interseting question. Given an array of positive integers in increasing order. Seperate them in two series, an arithmetic sequence and geometric sequence. The given array is such that a solution do exist. The union of numbers of the two sequence must be the given array. Both series can have common elements i.e. series need not to be disjoint. The ratio of the geometric series can be fractional. Example: Given series : 2,4,6,8,10,12,25 AP: 2,4,6,8,10,12 GP: 4,10,25 I tried taking few examples but could not reach a general way. Even tried some graph implementation by introducing edges if they follow a particular sequence but could not reach solution.

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• ATI Radeon 5670 Won't Show Resolutions over 1400x900

  - by Phil Sandler

  Just got my new Dell computer with Windows 7 and an ATI Radeon 5670. I attached it to my current monitor, which is a Samsung 24" (2443bwt). Windows 7 does not allow me to display in resolutions greater than 1400 x 900. The setup through a VGA cable into the VGA port of the card. The card also has a DVI port, but I need to use the VGA port because a KVM that supports VGA only. My old PC (which is Windows XP, GeForce 8600 video) can display in 1900 x 1200 on the same monitor (which is what I want) and even higher. It does this through a vga cable also connected to the KVM (through the DVI port but using an adapter). I have tried the same setup (DVI = VGA adapter) on the new PC and nothing changed. I have tried: Updating the drivers via Windows "Update Driver" (says they are current) Installing the updated version of the drivers from ATI (made no difference) Installing Powerstrip (all the options I would need for a custom resolution are greyed out) Installing the drivers/software from ATI caused the ATI Catalyst Control Center software to stop functioning, so I can no longer even start it. I have found some references to other people having this problem and instructions on cleaning the software off and reinstalling it (as uninstalling normally doesn't solve it). I will try this tonight. In any case, I didn't see any options in CCC that would allow me to override the settings for max resolution. However I didn't tinker with it too much before I tried updating the drivers, so I may have missed a setting. I contacted Samsung via online chat and they say it's a problem with the video card/driver (of course--what else would they say?). Any thoughts on what else I could try?

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• Sprite animation problem

  - by hustlerinc

  I have this sprite I have to animate. The sprite is 7 images total but animation is 10 frames (2 positions are repeated). The order I want to go through the frames is like this: 3 - 4 - 5 - 6 - 4 - 3 - 2 - 1 - 0 - 2. My problem is how can I skip 1 frame once I reach the end of each direction? The reason I want to skip is to save me from creating duplicate positions in the spritesheet. I'm doing this in Javascript.

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• How to install kghostview

  - by feelfree

  In order to use kghostview, I download the page from here. After that, I run the following command: sudo dpkg -i kghostview_3.5.10-0ubuntu1~hardy1.1_i386.deb However, I have the following error messages: dpkg: dependency problems prevent configuration of kghostview: kghostview depends on gs; however: Package gs is not installed. kghostview depends on kdelibs4c2a (>= 4:3.5.8-1); however: Package kdelibs4c2a is not installed. kghostview depends on libqt3-mt (>= 3:3.3.8-b); however: Package libqt3-mt is not installed. dpkg: error processing kghostview (--install): dependency problems - leaving unconfigured It seems that I should also install some external packages such as gs, kdelibs4c2a and libqt3-mt. However, I do not have any idea of how to install them. I try the sudo apt-get install command, but fail. Any idea will be appreciated.

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• Cannot start service SPUserCodeV4 on computer

  - by ybbest

  When you create a sand boxed solution for SharePoint 2010 in Visual Studio 2010 and try to deploy the solution , you could get the error “Error occurred in deployment step ‘Retract Solution’: Cannot start service SPUserCodeV4 on computer”(See the Picture1 below). In order to fix this , you need to go to Central Administration -> System Settings -> Manage services on server and start service “Microsoft SharePoint Foundation User Code Service” If you are developing SharePoint on DC(Domain controller),you need to check the solution from my previous post. Error message.(Picture1) Locate Microsoft SharePoint Foundation User Code Service.(Picture 2)

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• DNSCrypt-Proxy specific usage

  - by trekkiejonny

  I have some specific usage questions about DNSCrypt-Proxy. I followed a guide and ended with the command dnscrypt-proxy --daemonize –user=dnscrypt Without any further switches does it default to using OpenDNS's resolver server? I want to use specific servers, I found reference to pointing it to the full path of a CSV file. What is the CSV format for use with DNSCrypt? Would it be "address:port,public key"? Does it go in order of working addresses? For example, first resolver doesn't connect it moves on to the second line of the CSV, then third etc. Lastly, would this question be more appropriate in another StackExchange section?

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• Am I personally liable for bugs in medical software I've developed as an employee? [closed]

  - by user466406

  Some background: I'm employed at a small, Australia-based web agency that is dipping it's toe into Mobile Application development (iOS). The project that I'm working on provides a way for users to save medication dosage information which is sync'd with a backend server. Users must agree to ToS, Disclaimer etc before using the application. This is my first iOS application, and the project is currently over budget. As a result, management is not devoting the resources to Q&A and is pushing instead for more features. I am an employee of the agency, that has been contracted by a non-for-profit. The application will probably be released under our agency's name, but we also have the option of releasing it as the not-for-profit. My question is, if there are bugs found in the application, and as a result a user takes an incorrect dosage of a medication, am I personally liable? Is there anything that I can or should do in order to protect myself personally?

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• Throughput and why do ISPs sell too much bandwidth?

  - by jonescb

  I hope the question made sense how I worded it. :) I've been wondering, maximum theoretical bandwidth is measured as RWIN/RTT (Window size / round trip time) Source 1 and Souce 2 So if a major city only 100 miles away gives me a ping of 50ms, and I have the default 64kb TCP window size then my maximum throughput will be 12.5Mb/s. Everything further away would give me a higher ping and therefore a lower throughput. Is there any reason to buy something like FiOS with a 50Mb/s or greater connection? Will you ever be able to reach that kind of speed? I know you can increase the TCP window size to increase throughput, but it has to be at both ends which is a deal breaker because you can't control the server. I'm assuming other network protocols like UDP aren't quite as affected by latency as TCP is, but how much of overall network traffic does non-TCP make up vs TCP. Am I just misguided about how throughput works? But if the above is correct, then why should a consumer like me buy way more bandwidth than can be realistically used. Maybe the only reason is for downloading multiple things at once, or one thing from multiple servers/peers?

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• Giving the root user priority to maintain Debian (while server collapsing under heavy load)

  - by Saix

  Is there any way to setup Debian to prioritize any or specific root's activity before every other? For instance, several times per year something gets wrong (usually man's fault by overstressing apache/mysql) and system gets unresponsive under heavy load like 200 (8-core cpu). I know there are limits for php scripts to run then kill, but that's not the way because this limit has to be at least 45 minutes long. The problem is, until I'm able to login via SSH and let apache/mysql restart under this server stress, it nearly hits these 45 minutes anyway. Also hardware restart causing usually to run fsck at boot time on all harddrives since it's usually pretty long the box haven't been restarted. I was told it's really not good idea disabling fsck but then again, it takes more then hour to complete. What is the fastest way to restart apache/mysql? Is there any way to give ssh users or root user higher priority so the logging in and completing these restarts (rather stops though) commands wouldn't take so long? One comes to my mind.. use NICE for apache/mysql but no way. I can't risk limiting those two vital apps 24/7 or could I? I'm a little bit scared if any other system process wouldn't slow the pages down too much. Any backup process, swap (if any) etc. There is pretty heavy PHP framework with 20k visits a day, so it needs every hw/sw resource available. I can't throttle it the whole time, just in certain points when system gets unresponsive, so I could maintain it.

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• Slow DB Performance. Seems to be memory related.

  - by David

  I am seeing a pooorly performing web app with a SQL 2005 backend. The db is on a w2k3 machine with 4GB RAM. When I run perfmon on it I see the following. Page life expectancy is low. Consistently under 300 while the Buffer cache hit ratio is always 99% +. The target server memory is always 1618304 and the total server memory is always a number just below that. So it seems that it isn't grabbing enough of the available memory. I have AWE enabled, with the lock pages right for the SQL service account and have set a maximum of 2.25Gb... but it doesn't go near that. When I restart the SQL service the page life expectancy goes much higher, 1000+, and the total target memory starts at 0 and slowly works its way back up to the previous limit. Then it hits the limit and the page life expectancy goes back down massively to <300. So I'm guessing there is something limiting the amount of memory. Any ideas on what that would be and how I can fix it?

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• November 2012 Chicago IT Architects Group Meeting Announcement

  - by Tim Murphy

  The year is quickly coming to an end.  This is the most exciting part of the year with technology manufacturers in overdrive trying to release as many products for Christmas as possible.  Our group is trying to do our part to bring order to the madness with one last presentation for the year.  Norman Murrin will be speaking on November 20th on Adopting Agile Processes in the Enterprise.  Be sure to join us by registering at the link below. Register del.icio.us Tags: Chicago Information Technology Architects Group,CITAG,Agile,Architecture

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• How to find 2D grid cells swept by a moving circle?

  - by Nevermind

  I'm making a game based on a 2D grid, with some cells passable and some not. Dynamic objects can move continuously, independent of the grid, but need to collide with impassable cells. I wrote an algorithm to trace a ray against the grid, that gives me all cells that ray intersects. However, actual object are not point-sized; I'm currently representing them as circles. But I can't figure out an effective algorithm to trace a moving circle. Here's a picture of what I need: The numbers show in what order the circle collides with grid cells. Does anybody know the algorithm to find these collisions? Preferably in C#. Update The circle can be bigger than a single grid cell.

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• What program to use to create subtitles for a video?

  - by user4124

  I have a video that I want to create subtitles for. Is there a program that can perform rudimentary speech-to-text in order to set the correct start/stop of each individual subtitle create rudimentary text subtitles (using some sort of speech-to-text) I know about gnome-subtitles. However, it requires extensive effort to create those subtitles manually. You need to select yourself the start and stop for each sentence. Youtube has the above features (creates rudimentary text subtitles at the correct timings, using speech-to-text). However I would rather not upload the videos to Youtube just to get my subtitles. Is it possible to do the subtitles efficiently in Ubuntu? Update: I plan to use the .srt subtitles only, and do not need to hard code them on the videos. My biggest requirement is to have the program automatically find the start/stop for each sentence, so that I write the text in it.

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• Continuing to code on large projects

  - by user3487347

  I am a hobbyist programmer, and I've started many medium - sized projects to work on just by myself. These include games, a raytracer, physics simulations etc. By the time these projects get to a certain size (around 5000 lines), I begin to slow down in adding features to the program. This is not because of a lack of ideas of what to implement in a program, but rather a struggle in how to go about it. In particular, I'm afraid of breaking what I already have working in order to implement a new feature. I've tried using version control like Git and Subversion, but these seem unnecessary when you are a one man team. I simply have a folder of "versions" of my program, one for each major change I make. How do I keep coding past this 5000 line mark? What about the 50000 line mark?

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• Why does Windows 7 overall performance is better than Ubuntu 11.10?

  - by user37805

  I have a i7 2600 processor, 8Gb DDR3 ram, nVidia GTX570, and Ubuntu takes 45-50 seconds to boot and 32-35 seconds to power off, while windows 7 boots in 20-25 seconds and shuts down in 10 seconds. Both OS with autologin enabled, and in dual boot. Ubuntu is slow with preload too, and doesn't show any boot splash after installing drivers and didn't recognize my nVidia graphics card on jockey GTK, I had to add x swat repository and that didn't worked. I installed proprietary drivers through terminal (nvidia-common, nvidia-settings) in order to have 3d acceleration. But it doesn't make any difference on the speed. I also have a Pentium 4 PC and ubuntu 11.10 is way faster than windows 7 or XP. Also with nvidia graphics card and preload. http://paste.ubuntu.com/924890/ there is my boot script, sorry but some words are in Spanish because my ubuntu is in Spanish. Not using WUBI, Ubuntu has its own partition, 64-bits, and Matlab 2011 has very low performance compared to windows version.

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• Procurement Index: DOC ID 1391332.2

  - by Oracle_EBS

  Visit the Procurement Index for one stop shopping from DOC ID 1391332.2 which is the jumping off point to our Product Information Centers and Search Helpers for each of our product groups; including, Purchasing, iProcurement and iSupplier Portal. Use Product Information Centers for issues that you can proactively resolve (get solutions before processes fail), and to be proactive with new notes and alerts. Search Helpers are guides for specific issues providing a collection of available solution documents, by the symptoms you enter. For example do you have a purchase order stuck in process or are you getting the RVTII-060 error when receiving? Check out our Search Helpers for possible solutions. Below we have drilled down on the Purchasing link taking us to the Purchasing Information Center which then provides the links to our Product Information centers and Search Helpers for our various components; Accounting, Approvals, Purchase Orders, Receiving and Requisitions. Drilling down further on the Approvals Information Center we get a taste of the information provided. This is dynamic and provides a wealth of information.

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