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  • What language and topics should be covered when teaching non-CS college students how to program?

    - by michaelcarrano
    I have been asked by many of my non-computer science friends to teach them how to program. I have agreed to hold a seminar for them that will last for approximately 1 to 2 hours. My thoughts are to use Python as the language to teach them basic programming skills. I figured Python is relatively easier to learn from what I have researched. It is also a language I want to learn which will make holding this seminar all the more enjoyable. The topics I plan to cover are as followed: Variables / Arrays Logic - If else statements, switch case, nested statements Loops - for, while, do-while and nested loops Functions - pass by value, pass by reference (is this the correct terms for Python? I am mostly a C/C++ person) Object Oriented Programming Of course, I plan to have code examples for all topics and I will try to have each example flow into each other so that at the end of the seminar everyone will have a complete working program. I suppose my question is, if you were given 1 to 2 hours to teach a group of college students how to program, what language would you choose and what topics would you cover? Update: Thank you for the great feedback. I should have mentioned in my earlier post above that a majority of the students attending the seminar have some form of programming experience whether it was with Java or using Matlab. Most of these students are 3rd/4th year Engineering students who want to get a refresher on programming before they graduate.

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  • How to clear unshown OSD notifications

    - by Avatar Parto
    I am a webmaster of 2 active websites. Every time I start Thunderbird, it downloads all the new messages from the admin mail addresses of these sites - [email protected], [email protected], [email protected], etc. There are about 20 of them - this includes my personal email accounts. Now, am not always connected to the internet and there arises cases where I need to access already downloaded mails. Thunderbird then tries to connect to the internet, which it can't coz am offline, and then displays about twenty OSD notifications, one after the other, telling me that connection for each email address has failed. That's frustrating and it really eating me up. Am looking for a way, either: 1. To tell Thunderbird NOT to connect to the internet when am offline, or 2. To clear all these notifications after like the first one shows. And if it will help, am using ubuntu 13.04 and Thunderbird 24.0 and I always keep my computer fully updated. Any help is welcome. Thanxs.

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  • How can I properly create /dev/dvd?

    - by chazomaticus
    Certain programs look for /dev/dvd by default to find DVDs. When I first boot my computer without a DVD inserted, /dev/dvd exists and points to the correct place (/dev/sr0). However, when I insert a DVD, /dev/dvd disappears. I'd like it to stick around so I don't have to navigate to /dev/sr0 in programs that are looking for DVDs. How do I ensure that the /dev/dvd symlink exists and points to the right place? It looks like I can add something to /etc/udev/rules.d/70-persistent-cd.rules. This site gives a couple of examples, but the 70-persistent-cd.rules file says "add the ENV{GENERATED}=1 flag to your own rules", which isn't part of the examples. The man 7 udev page is impenetrable to me, and I'm not convinced the linked page gives 100% of the information I need. So, what can I do on a modern, Ubuntu 12.04 (or later) system to make /dev/dvd always exist and point to the right device? EDIT: Is it as simple as adding ENV{GENERATED}=1 to the rules in the linked page, something like this: SUBSYSTEM=="block", KERNEL=="sr0", SYMLINK+="dvd", GROUP="cdrom", ENV{GENERATED}=1 Is that the right information for modern Ubuntu? What is ENV{GENERATED} doing there, when it wasn't generated, but hand-written?

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  • Windows 7 Home Premium - Unable to View Chinese Characters Properly

    - by David
    Is there a proper and permanent fix that will restore the display of Chinese Characters on a Windows 7 Home Premium Laptop computer? This problem has been occurring frequently now and a simple reboot no longer does the trick. The square boxes viewed on many applications and websites has been constantly bothering me and I wish to fix it asap. I have done a lot of research on it but have not been successful. Many responses were to install the language packs for Windows 7 Ultimate Users which apparently is not my case or to configure the "Region and Language" settings of the Control Panel, changing the system locale. Does anyone have any suggestions? All would be appreciated!

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  • How to prevent HP Photosmart Essential from launching on removal drive insertion

    - by David Boike
    My in-laws bought an HP computer loaded with HP junk, and it's giving me a headache. When they insert a camera memory card into their printer, the Auto-Play dialog comes up, but it also launches the HP Photosmart Essential application, which is a piece of trash. It will NOT launch properly just normally from the taskbar, so that makes it pretty useless. I tried uninstalling it, but then when you insert a memory card, a Microsoft Help window comes up saying how to reinstall HP Photosmart Essential!! Is there any way to find the registry key (I assume) that allows a program to be launched when a memory card is inserted?

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  • uTorrent error: Access is denied

    - by Ben Franchuk
    When I booted my computer today and opened up uTorrent it went on, as usual, to check the torrents that I had been running before. On one it returned an "Access is denied" error after it had been checked. I have absolutely no idea why this is happening as I was downloading the same torrent just the night before, and additionally because I have other torrents going in the same downloads folder and they do not have any such errors. It may be worth noting that on said defective torrent, there appear to be no seeds and no connected peers (of the 33 available) and three of the trackers appear to be inactive as well (those being Peer Exchange, Local Peer Discovery and DHT). I have rebooted a few times in an attempt to fix this problem, but to no success. I also tried a few times force rechecking / force starting but neither of those worked either. edit I booted today and it was working for whatever reason. thanks for all of the help anyways guys!

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  • Installed IE8 & SP3 on XP now I can't HTTPS from any browser.

    - by Kevin
    The computer is Windows XP Professional SP3 with IE8. On the Tools Options Connections the "Settings" is GRAYED OUT (I am an admin on the machine) Any browsing of https:// addresses results in IE displaying the following: "this program cannot display the web page" After installing an alternate browser and trying the same https:// address I get a similar error message. I have tried using Compatibility View Settings to for all web pages and this has no effect on the problem. HTTP addresses work fine, I can PING sites such as google.com without issue. Question: What could be preventing me from getting at the settings to check to see if I'm using a proxy? What else could be preventing HTTPS access?

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  • Change Linux Console's Default Monitor

    - by Tim M
    Is there any way to specify which monitor the console is displayed on in Linux? Details: I have a 3 monitor setup with 2 video cards. When I boot the computer, the BIOS displays on the PCI graphics card (which has a small monitor). When starting Linux, the console is displayed on the same monitor. Is there a way to have the console output on a different monitor? I'm using the vesafb framebuffer. I don't see a way in my BIOS to change the default video card.

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  • OUCH! Laptop running SUPER HOT after 12.10 upgrade!

    - by dinkelk
    I was running 12.04 for 6 months, my laptop ran almost silently and cool enough to hold on my lap. I updated to 12.10 and now my computer gets too hot to hold on my lap and the fan is constantly running on full blast. This is the output of sensors: acpitz-virtual-0 Adapter: Virtual device temp1: +84.0°C (crit = +99.0°C) coretemp-isa-0000 Adapter: ISA adapter Physical id 0: +84.0°C (high = +86.0°C, crit = +100.0°C) Core 0: +74.0°C (high = +86.0°C, crit = +100.0°C) Core 1: +72.0°C (high = +86.0°C, crit = +100.0°C) Core 2: +75.0°C (high = +86.0°C, crit = +100.0°C) Core 3: +84.0°C (high = +86.0°C, crit = +100.0°C) radeon-pci-0100 Adapter: PCI adapter temp1: +76.0°C I have an HP Pavilion dv6, i7, amd radeon graphics. Please let me know if you need additional information. What could be different between the two Ubuntu editions that caused such a drastic change? Edit 1: Per @Paul's suggestion, I ran htop to try to narrow down the problem. Here is the result! (left side of terminal) (right side of terminal) This is about 10 minutes after boot-up, htop, yakuake, and a chrome page with 1 tab opened to this question are all that I have manually opened. The most taxing program to the CPU is htop itself. I think that the problem must lie elsewhere; my temps are already up to ~65C for the CPU and ~69C for the GPU, with nearly 0% CPU usage.

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  • Unrecognized file format .mdb in Microsoft Access -- repair doesn't fix it

    - by user1282159
    So what I have is a file from a staff computer that I believe is an access file b/c its called .mdb, however it does not open! I even tried to follow the repair steps (create a new file and use the "compact and repair" tool. and all I keep getting is "unrecognized file format *.mdb" (replace the * with the filename). I am not even sure it is an access file. I have tried using Office 2007 and office 2010 but neither work. Is there a way to fix this that is not on the Microsoft website? Or to determine whether this is actually an access file and not some other file with the extension renamed? Any help would be appricated, thanks.

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  • Explaining Git to someone new to revision control

    - by MaxMackie
    I've recently decided to jump into the whole world of revision control to work on some open source projects I have. I looked around (subversion, mercurial, git, etc) and found that Git seemed to make more sense conceptually to me. I've set everything up on my computer (opensuse) and made an account on gitorious (let me know if there is a more simple/better hosting provider). I understand Git from a conceptual point of view (work locally, commit to a local repo, others can now checkout from you, right?). But where does gitorious come into play? I commit to them as well as committing locally? Apart from conceptually, I don't quite understand HOW it works when it comes to making a local repository and running git init inside a folder and that HEAD file. Keep in mind I have never used any form of revision control ever before. So even the most basic concepts are foreign to me. As I post this, I'm also reading up and trying to figure it out myself.

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  • windows 2008 server move users to new server

    - by moos3
    I have a new server that is replacing a current windows 2008 server r2. I want to move all the local users and IIS sites to the new box. Is there away to export the two and import them on the new box? I have sync'd all the files for all the sites to the new box. This box doesn't belong to a domain so its not a matter of joining to the domain. The users I'm talking about are the local computer users.

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  • Why can't I create a Windows backup on my secondary disk?

    - by Brian Sullivan
    I've installed Windows 7 Ultimate on an SSD that I've added to the XPS desktop that I bought from Dell. I would like to use the built-in backup functionality to create incremental backups and store them on the large drive that came with the machine. I formatted the large drive and turned it into a Basic disk. However, when I try to set the backup location to the large internal disk (E:\) in the "Set up backup" wizard, a get a message saying, "A system image cannot be saved on a drive that your computer boots from or that Windows is installed on." Windows is not installed on that disk. I even deleted the OEM partition that was on the disk, and removed it completely from the boot order in the BIOS. Any clue why Windows is griping at me about this?

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  • Trojan infection help please

    - by brandon
    Hey, I was browsing some websites and somehow obtained a trojan through some sort of silent download. Google Chrome started acting funny and wouldn't load web pages and neither would internet explorer. Only Firefox worked. I rebooted my computer and as usual logged into my email account as well as my bank account online completely forgetting about the infection. Could my information have been sent to the person or people or wrote the trojan? I downloaded Zone Alarm and took care of the issue, I'm just worried about when I absentmindedly logged into my email account and bank account online while I was infected.

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  • Name of my sql server instance from outside the network

    - by Michel
    Hi, normally i connect to my sql server instance from my local computer, and then the server name to connect to is the name of my laptop. So i can connect to server instance 'MichelLaptop' But now i'm trying to connect to my server from outside my network, and the first thing i wonder is: what is the name of the instance? i've made a redirect to my local machine in the DNS of my domain, so i said (this is not the real data) testsql.mydomain.com goes to 190.191.192.193 and when i ping testsql.mydomain.com, i get a response from 190.191.192.193 But what then is the server name?

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  • Problem with PPTP VPN and internet

    - by Enriquev
    Hello, I have an internet connection the following way : Internet Modem <- FireWall(not a router, a firewall) <- PC Everything is setup so my pc has an external ip address, and my firewall takes care of blocking bad stuff. I connect by VPN to an external network, so I added a new connection using Windows Xp's "New connection wizard" (the vpn client that comes with Windows XP), it's a PPTP connection so I used all default settings. I put the PPTP server's IP, my username and password and I succesfully connected. I was able to have access to the external VPN ressources. The only problem is everytime I connect to this VPN, my computer cannot connect to the web anymore, no msn, no ping, no web. Is there anything special I should be doing?

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  • Web Crawler for Learnign Topics on Wikipedia

    - by Chris Okyen
    When I want to learn a vast topic on wikipedia, I don't know where to start. For instance say I want to learn about Binary Stars, I then have to know other things linked on that pages and linked pages on all the linked pages and so on for the specified number of levels. I want to write a web crawler like HTTracker or something similiar, that will display a heiarchy of the links on a certain page and the links on those linked pages.I wish to use as much prewritten code as possible. Here is an example: Pretending we are bending the rules by grabing links from only the first sentence of each pages The example archives and "processes" two levels deep The page is Ternary operation The First Level In mathematics a ternary operation is an N-ary operation The Second Level Under Mathmatics: Mathematics (from Greek µ???µa máthema, “knowledge, study, learning”) is the abstract study of topics encompassing quantity, structure, space, change and others; it has no generally accepted definition. Under N-ary In logic,mathematics, and computer science, the arity i/'ær?ti/ of a function or operation is the number of arguments or operands that the function takes Under Operation In its simplest meaning in mathematics and logic, an operation is an action or procedure which produces a new value from one or more input values ------------------------------------------------------------------------- I need some way to determine what oder to approach all these wiki pages to learn the concept ( in this case ternary operations )... Following along with this exmpakle, one way to show the path to read would a printout flowout like so: This shows that the first sentence of the Mathematics page doesn't link to the first sentence of pages linked on ternary page two levels deep. (Please tell me how I should explain this ) --- In otherwords, the child node of the top pages first sentence, ternary_operation, does not have any child nodes that reference the children of the top pages other children nodes- N-ary and operation. Thus it is safe to read this first. Since N-ary has a link to operations we shoudl read the operation page second and finally read the N-ary page last. Again, I wish to use as much prewritten code as possible, and was wondering what language to use and what would be the simpliest way to go about doing this if there isn't already somethign out there? Thank You!

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  • Alternatives to Citrix GoToAssist ?

    - by Evan Carroll
    Citrix GoToAssist is a really nifty little web application for customer support that allows you to take control of someones OSX, or Windows machine. Essentially, it works likes this: You log in to your management console You get a code You give them a code, and a website (fastsupport.com) They go there and enter in the code They accept the browser applet which installs a program on their computer You have control of their desktop You can see their desktop, configure applications, etc. They can also see when you disconnect. It is really rather nifty, but it doesn't support Linux and it is rather expensive (660$ a year). Does anyone know of any alternatives to this? I'm looking for a solution as simple on the user as this one, that doesn't require firewall configuration or setting up ssh/vnc/rdesktop etc.

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  • Application windows have colossal fonts in Enlightenment 17, while system windows are untouched

    - by Matt
    I'm trying to get used to using Enlightenment instead of KDE on my Slackware64 multilib computer, but I'm having a terrible time getting one problem fixed. My fonts are HUGE on application windows - from Firefox to Gimp to Xchat to anything else, all the fonts are 3x the size they should be. But at the same time, the system menu is the correct size. I'm at a loss - I want the applications to have the same DPI as the system menu. When I'm in KDE, they all look normal. I've included a screenshot to show what I'm talking about.

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  • Run remotly, in the background, using ssh, then log-out, keep process running, how? - Simply pls :-)

    - by user1611107
    The following question has been asked millions of times (be patient towards it please :-)).. Why O why - can't I find ONE SIMPLE, CONCLUSIVE answer? - Would be highly appreciated! Is running a program (What_ever_job.EXE file) in ssh as : "./What_ever_job &" enough to keep it running if my own computer is shut down and ssh is closed? If not - what is the PRECISE (Please!...) way to run it? No "Screen" please, I have seen something called "nohup" (?) - how do I write the commend? Thanking you a lot on advance, Erez.

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  • RDP locks up login, doesn't unlock on Windows

    - by private_meta
    From time to time, my system, when I try to login TRHOUGH or AFTER a remote connection, locks up the login session. I can't login anymore, the screen turns black (the monitor is still active, the image is black). Especially in the recent case, the system did not come back from the lock-up, and I had to reset the computer. Any idea what might be the issue here? More information: Both Computers are Windows 7, The RDP Server has a wired connection, the Client has either Wireless or Wired. The network card involved on the server is a "Realtek RTL8168C(P)/8111C(P) Family PCI-E Gigabit Ethernet NIC (NDIS 6.20)" card built-in on an ASRock Mainboard. I'm using either local LAN or internet connection through NAT/Router.

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  • How to shutdown Windows 8 PC without using mouse?

    - by Gopinath
    Windows 8 sports a re-imagined desktop and tablet user interface with touch friendly Metro looks. One of the major changes in Windows 8 for a common users  is the lack of start menu, with which we got friended for more than a decade. On Windows 8 we would be missing it. As there is no start menu in Windows 8, the way you shutdown a Windows 8 computer is a bit different. To shutdown using Mouse, you need to hover on the top right edge of the screen to open the hidden menu,  go to "Settings"  tab -> "Power" -> Then choose for "Shut down", "Sleep" or "Restart".  That’s a lot of Mouse movement work and if you are a power user then you may not like to do that. How about shutting down the PC using Keyboard? Here are the two ways to shutdown the PC using keyboard Keyboard shortcuts With the help of keyboard shortcuts you can navigate to Power options of Windows 8. Press Win + C to bring the Settings Charm and use Arrows and Enter keys to navigate to access Shutdown menu. This is one of the easiest way to shutdown the PC without using Mouse. Run Command If you don’t like to go through the Setting menu, you can use the traditional Run commands. Press Win + R to open Run dialog and enter the command shutdown -s -t 0 to immediately shutdown the PC.

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  • Testing DNS configuration of domain by using hosts file?

    - by Alex Blundell
    I'm currently migrating a website to another server, and want to test the DNS configuration (more specifically, email mx records) before moving the domain over. I've configured the DNS on the new server to have mx entries for Google Apps in the same way that it's configured on the old server. The domain is controlled by nameservers on the old server at the moment, so the change would simply be updating the nameservers to the new servers. (What I'm getting at is DNS is controlled at the server level, not registrar level). Since the website has quite a number of users, I want to make sure the configuration is right before flicking the switch. For this, can I add an entry to the hosts file of my local computer to point the domain to the new server? I've done this, and the web server works, but would this also test the email mx records on the new server?

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  • The most efficent ways for drawing lines all day long with OpenGL

    - by nkint
    I'd like to put a computer screen that is running an OpenGL programs in a room. It has to run all day long (not in the night). I'd like to draw lines that are slowly fading in the background. The setting is simple: a uniform color background (say, black) and colored lines (say, white) that are slowly fading out. With slowly I mean.. hours. Say that the first line I draw is with alpha 255 (fully visible), after one hours is 240. After 10 hours is 105. One line could have 250 points and there will be like 300 line in one day. For now I have done a prototype with very rudimentary method like: glBegin( GL_LINE_STRIP ); iterator = point_list.begin(); for (++iterator, end = point_list.end(); iterator != end; ++iterator) { const Vec3D &v = *iterator; glVertex2f(v.x(), v.y()); } glEnd(); More efficient method?

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  • Realtek "Microphone Effects" no longer working

    - by abc
    I have a mic plugged into my computer, and I was able to use the "microphone effects" tab here to enable/disable noise suppression and acoustic echo cancellation. Noise suppression off and acoustic echo cancellation on were the most recent settings I had on before the problem occurred. I disabled my mic in the windows 7 "recording devices" tab, then re-enabled it. When it came back, these options were grayed out, and remained so even after a reboot. I am not sure why this is or how to fix it, all other options are still the same (Settings are identical to when it was working). Any ideas whats wrong or how to fix it? edit: can't post image due to being new.

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