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• Can a UPS give off an EM field capable of interfering with desktop components?

  - by Magsol

  I own an APC Back-UPS ES 750; it's about 4 years old, and is the only major component remaining in a question that has been boggling me for the last 18 months. (Yep, I originally posted this question about the possessed desktop, and while I marked a solution and closed the question, a week later the same problem returned) I've tried plugging the desktop straight into the wall (but left the other components plugged into the UPS) and the desktop still froze. Is it possible that the EM field generated by the UPS is interfering with my desktop components and causing these otherwise-unpredictable system freezes? To me this sounds like a long shot, but aside from my twin LCD monitors, that just about takes care of all the major components.

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• PASS: Budget Status

  - by Bill Graziano

  Our budget situation is a little different this year than in years past.  We were late getting an initial budget approved.  There are a number of different reasons this occurred.  We had different competing priorities and the budget got pushed down the list.  And that’s completely my fault for not making the budget a higher priority and getting it completed on time. That left us with initial budget approval in early August rather than prior to June 30th.  Even after that there were a number of small adjustments that needed to be made.  And one large glaring mistake that needed to be fixed.  We had a typo in the budget that made it through twelve versions of review.  In my defense I can only say that the cell was red so of course it had to be negative!  And that’s one more mistake I can add to my long and growing list of Mistakes I’ll Never Make Again. Last week we passed a revised budget (version 17) with this corrected.  This is the version we’re cleaning up and posting to the web site this week or next.

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• How Can I Close the Leftmost Window in Vim?

  - by msutherl

  I'm trying to write a command that will close a tree-browser (vim-tree) window and resize the other windows. ,to opens the window and adjusts the window size so that all open windows retain a normal size (using :set columns+=30CTRL-W =). ,tc should close the tree window (full-length, far left) and resize the main window (:set columns-=30). How can I write a command that closes the leftmost window so that I can type ,tc to close the window and resize in one shot? I can navigate to it with CTRL-W h, but it is inelegant and potentially annoying (audible bell!) to use 10CTRL-W h in the command. :topleft c unfortunately doesn't work. Can you think of an elegant way to do this?

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• Calc direction vector based on destination vector and distance from enemy in AS3

  - by Phil

  I'm working on a zombie game in AS3 where I want a character to be able to move away from a zombie depending upon how close the zombie is. The character also has a destination that it's trying to get too on the screen. Ok so I have 2 vectors, one pointing to my destination, and one pointing to the zombie which I then invert to get my "away" vector. I then turn the distance between my character and the zombie into a value between 0 and 1. And then I'm stuck on how to get a resultant vector for my character. How would I use my 0-1 value to calculate how much of the away vector is used and how much of the original destination vector is still left if that makes sense? to end up with 1 direction vector to move my character? So if the zombie is right where my character is, then my direction vector = away vector, and if I'm far away from the zombie than my direction vector = destination vector, but how do I calculate the in-between? Ideally need the answer in AS3.

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• SSD install - what do I need to watch out for when reconfiguring SATA ports?

  - by tim11g

  I installed a Samsung 840 SSD in a Windows 7 machine. It seems to be working fine, but I'm not seeing the expected performance. The AS SSD benchmark gives 76 for read and 138 for write. At the upper left of the benchmark it says "pciide - BAD" and "31K - BAD". I'm assuming the "pciide BAD" means the motherboard (Gigabyte GA-P35-DS4) is configured as IDE emulation and needs to change to native SATA. I don't know what the "31K" refers to. The bios settings look like this: I saw this article that indicates that changing the SATA mode of the boot drive can cause problems (Blue Screen): Error message occurs after you change the SATA mode of the boot drive What is the correct procedure to change the SATA Mode without causing a system failure? Apply the registry change from the MSFT article above first, then reboot and change the SATA mode? Will the SATA mode change in the BIOS affect other drives?

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• How to fight off against a government's internet censorship?

  - by Fellknight

  I live in a country where the left-wing totalitarian regime that it's our government has begun the procedures (legal and physical) to restrict the internet access of it's citizens following the footsteps of China and Cuba. I believe that free access to information is a human right and should not be under any circumstances restricted or sanctioned, i don't want to live in country that does otherwise. Unfortunately leaving for good for the time being it's not an alternative. What I (and all the people that think like me) need to know is; if there are ways of bypassing the possible protections that will be implemented soon?, like the Chinese do . I'm afraid that even proxys might not suffice in the long term since our ISP will be implementing the regulation. Any information or explanation on this will be deeply appreciate it.

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• Is there a clean way to tell Windows to release a volume?

  - by zneak

  Hey guys, I'm trying, under Windows 7, to run a virtual machine with VMWare Player from an OS installed on a physical partition. However, when I boot the virtual machine, VMWare Player says that it couldn't access the physical drive and has to abort there. This seems to be a generally acknowledged problem in the VMWare community, as Windows Vista introduced a compelling new security feature that makes it impossible to write to a raw drive without obtaining exclusive access to it. I have googled the issue and found a few workarounds. However, the clean ones seem to only work on whole physical disks, and not on partitions. So I would be left with the dirty solution. In short, it meddles with the MBR to erase any trace of the partitions to use, makes Windows forget about them, then restores the MBR so we can launch the VM. Is there a way to let VMWare acquire exclusive access to the partition without requiring me to nuke it away?

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• UDF Partition reported full when it is not

  - by Capt.Nemo

  I was using these instructions to setup an external hard disk with udf. I have been able to setup a multi-partition system using those instructions, but I seem to have hit a wall, where the partition is reported as full while writing to the disk. Every other tool available to me reports it as free. Relevant lshw output Here's a screenshot showing the disk: Both the output of df and the file manager (caja) report the disk as free. Filesystem Size Used Avail Use% Mounted on /dev/sda9 9.0G 7.6G 910M 90% / udev 974M 12K 974M 1% /dev /dev/sda1 50G 47G 295M 100% /media/Data /dev/sda6 49G 41G 5.9G 88% /home /dev/sda2 155G 127G 29G 82% /media/Entertainment /dev/sda8 14G 13G 516M 96% /media/Stuff /dev/sdb2 120G 1.9G 112G 2% /media/3c887659-5676-4946-875b-b797be508ce7 /dev/sdb3 11G 2.6G 7.7G 25% /media/108b0a1d-fd1a-4f38-b1c6-4ad1a20e34a3 /dev/sdb1 802G 34G 768G 5% /media/disk I seem to have hit a wall near the 35GB mark. Despite being shown as 35gb/860gb used everywhere, the following happens on a write attempt: [2017][/media/Dory]$ echo D>>echo bash: echo: write error: No space left on device Writing byte by byte, the maximum I can take it to is 34719248K. The most weird part is that on mounting it Windows, Windows can write to the disk easily, and the writes are being read fine back in Ubuntu. However, the used-bytes remains at 34719248K in Ubuntu (It goes higher on Windows, however).

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• How to do a multishot in xna?

  - by DeVonte

  I am trying to simulate a gun in which shoots multiple bullets at the same time(similar to a spread out shot). I am thinking I have to create another bullet array then do the same as I have below but in a different direction. Here is what I have so far: foreach (GameObject bullet in bullets) { // Find a bullet that isn't alive if (!bullet.alive) { //And set it to alive bullet.alive = true; if (flip == SpriteEffects.FlipHorizontally) //Facing right { float armCos = (float)Math.Cos(arm.rotation - MathHelper.PiOver2); float armSin = (float)Math.Sin(arm.rotation - MathHelper.PiOver2); // Set the initial position of our bullets at the end of our gun arm // 42 is obtained by taking the width of the Arm_Gun texture / 2 // and subtracting the width of the Bullet texture / 2. ((96/2)=(12/2)) bullet.position = new Vector2( arm.position.X + 42 * armCos, arm.position.Y + 42 * armSin); // And give it a velocity of the direction we're aiming. // Increae/decrease speed by changeing 15.0f bullet.Velocity = new Vector2( (float)Math.Cos(arm.rotation - MathHelper.PiOver4 + MathHelper.Pi + MathHelper.PiOver2), (float)Math.Sin(arm.rotation - MathHelper.PiOver4 + MathHelper.Pi + MathHelper.PiOver2)) * 15.0f; } else //Facing left { float armCos = (float)Math.Cos(arm.rotation + MathHelper.PiOver2); float armSin = (float)Math.Sin(arm.rotation + MathHelper.PiOver2); //Set the initial position of our bullet at the end of our gun arm //42 is obtained be taking the width of the Arm_Gun texture / 2 //and subtracting the width of the Bullet texture / 2. ((96/2)-(12/2)) bullet.position = new Vector2( arm.position.X - 42 * armCos, arm.position.Y - 42 * armSin); //And give it a velocity of the direction we're aiming. //Increase/decrease speed by changing 15.0f bullet.Velocity = new Vector2( -armCos, -armSin) * 15.0f; } return; }// End if }// End foreach

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• How do I delete an Outlook calendar entry (after the meeting is over) without notifying the creator

  - by JabberwockyDecompiler

  I have several meetings during the day and I like to be able to open my calendar and see what is left at a glance so I delete the meetings that I have already completed. If I do this close enough to the meeting time I am asked if I want to notify the creator. If I do this after the meeting has started Outlook automatically sends a notice to the creator that I have declined the meeting. I am only deleting the one instance so it is still in my calendar for the next time, however that creates an email that others must read/delete. I need to be able to remove single occurrences of meetings without automatically sending a notice that I am deleting the entry. NOTE: I am using Outlook 2007, I did not see anything in the Advanced Email Options. NOTE 2: I have seen this happen with Lotus notes as well (Like anyone actually uses that). NOTE 3: There is not a sent message created, only the creator of the calendar event will see the message.

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• Unable to mount USBDRIVE Error creating moint point: Permission denied

  - by steve

  Whenever I plug a usb into my computer a window pops up and says Unable to mount [Name of USB] Error creating moint point: Permission denied steve@goliath:/$ uname -a Linux goliath 3.2.0-32-generic #51-Ubuntu SMP Wed Sep 26 21:33:09 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux steve@goliath:/$ sudo fdisk -l WARNING: GPT (GUID Partition Table) detected on '/dev/sda'! The util fdisk doesn't support GPT. Use GNU Parted. Disk /dev/sda: 120.0 GB, 120034123776 bytes 255 heads, 63 sectors/track, 14593 cylinders, total 234441648 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x0f716ee1 Device Boot Start End Blocks Id System /dev/sda1 1 234441647 117220823+ ee GPT WARNING: GPT (GUID Partition Table) detected on '/dev/sdb'! The util fdisk doesn't support GPT. Use GNU Parted. Disk /dev/sdb: 1500.3 GB, 1500301910016 bytes 255 heads, 63 sectors/track, 182401 cylinders, total 2930277168 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x0f710ee1 Device Boot Start End Blocks Id System /dev/sdb1 1 2930277167 1465138583+ ee GPT Disk /dev/sdc: 16.0 GB, 16005464064 bytes 74 heads, 10 sectors/track, 42244 cylinders, total 31260672 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0xc3072e18 Device Boot Start End Blocks Id System /dev/sdc1 8064 31260671 15626304 c W95 FAT32 (LBA) steve@goliath:/$ sudo mkdir /media/external mkdir: cannot create directory `/media/external': Permission denied steve@goliath:/$ sudo mkdir /media/usb0 mkdir: cannot create directory `/media/usb0': Permission denied steve@goliath:/$ sudo ls -l / | grep media drwxr-xr-x 3 root root 4096 Oct 3 22:48 media steve@goliath:/$ ls /media/ -a . .. MediaShare MediaShare is the the directory on my server that has all my movies and music. If there is any information I left out please let me know.

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• Mix10 is in history, Windows Phone 7 is here!

  MIX10was really a fantastic conference for Telerik! We had great talks, many customers stopped by our booth and we've got a lot of great feedback for our Silverlight Controls. Thank you for stopping by and sharing your opinion! So now, that the MIX is over, there is one question left: What Telerik will develop for theWindows Phone 7? We had this question on the booth over and over again and it is no doubt that the WP7 development is a hot topic now. All we can sayat this momentis that Yes, we are looking into this and we actually have some of our controls already partially working with WP7 internally :) You know that the Silverlight version for WP7 is Silverlight 3 and it has some very good additions over it in order to support the phone hardware - like webcam, mic, accelerometer, etc. If you missed the conference and the sessions- here is a list of videos thatwill get you started: Building Windows Phone Applications with Silverlight, Part 1 Mike Harsh Building Windows Phone Applications with Silverlight, Part 2 Peter Torr The good thing isthat our controls will needvery few tweaks in order to be *compiled* against the WP7 Silverlight runtime. But, the more interesting part is actually what are the scenarios that our controls will be used in. How different they will be from the desktop version of the SL? This is where we need your feedback - drop as a line and let us know what are your expectations in this area. Do you need something specific, a feature or a new control that you like to use, or maybe you have a specific scenario that you want to share. Nowthe ball is in your hands - write on the forums, send us a ticket, or just leave your comment on WP7 developmentbelow! Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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• D3DXMatrixDecompose gives different quaternion than D3DXQuaternionRotationMatrix

  - by Fraser

  In trying to solve this problem, I tracked down the problem to the conversion of the rotation matrix to quaternion. In particular, consider the following matrix: -0.02099178 0.9997436 -0.008475631 0 0.995325 0.02009799 -0.09446743 0 0.09427284 0.01041905 0.9954919 0 0 0 0 1 SlimDX.Quaternion.RotationMatrix (which calls D3DXQuaternionRotationMatrix gives a different answer than SlimDX.Matrix.Decompose (which uses D3DXMatrixDecompose). The answers they give (after being normalized) are: X Y Z W Quaternion.RotationMatrix -0.05244324 0.05137424 0.002209336 0.9972991 Matrix.Decompose 0.6989997 0.7135442 -0.03674842 -0.03006023 Which are totally different (note the signs of X, Z, and W are different). Note that these aren't q/-q (two quaternions that represent the same rotation); they face completely different directions. I've noticed that with matrices for rotations very close to that one (successive frames in the animation) that the Matrix.Decompose version gives a solution that flips around wildly and occasionally goes into the desired position, while the Quaternion.RotationMatrix version gives solutions that are stable but go in the wrong direction. This is only for the right arm in my animation -- for the left arm, both functions give the correct solution, which is the same quaternion within error tolerances. This makes me think that there's some sort of numeric instability or weird stuff with signs going on. I tried implementing this and then this, but both gave me a completely incorrect solution (even for the matricies where the SlimDX ones were working correctly) -- maybe the rows and columns are flipped?

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• I'm applying for a position at a startup. To whom should I address my cover letter?

  - by sapphiremirage

  One of the co-founders answered questions about the company when the job was posted, but I feel like I shouldn't assume that he's the one who is in charge of hiring. Since it's relatively new and has a lot of name overlap with other things already on the web, it's hard to find any information about the company online, much less the name of their hiring manager. I'm not even certain that they do have a hiring manager, since I seem to remember that they are just an 8 person team. I've heard that "To whom it may concern" is tacky, and normally I would say something along the lines of "Dear Head of Human Resources", but that clearly doesn't work in this case. Any idea what my salutation should be? Later Edits: Final Version: To Joe Programmer and/or the AwesomeStartup.com hiring team, (+ a few words in first paragraph explaining why I am addressing Joe Programmer) I've already sent the email, so nothing you say here will save me. However, feel free to comment on my decision if you think your words be useful to future generations. Old Version (left here because some people responded to it): To the hiring manager for internships at Awesomestartup.com, Additionally, because so many people made comments about the content of my letter: I did spent several hours writing the cover letter itself and making sure that it was awesome. After spending such a long time working on the important part, I asked this question because I wanted to make sure that it wouldn't get passed over by some human who was having a bad day and decided that my salutation was inappropriate. Not likely when the most likely reader of that email is a programmer type, I know, but I figured that it wouldn't hurt not to be sloppy.

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• Platform game collisions with Block

  - by Sri Harsha Chilakapati

  I am trying to create a platform game and doing wrong collision detection with the blocks. Here's my code // Variables GTimer jump = new GTimer(1000); boolean onground = true; // The update method public void update(long elapsedTime){ MapView.follow(this); // Add the gravity if (!onground && !jump.active){ setVelocityY(4); } // Jumping if (isPressed(VK_SPACE) && onground){ jump.start(); setVelocityY(-4); onground = false; } if (jump.action(elapsedTime)){ // jump expired jump.stop(); } // Horizontal movement setVelocityX(0); if (isPressed(VK_LEFT)){ setVelocityX(-4); } if (isPressed(VK_RIGHT)){ setVelocityX(4); } } // The collision method public void collision(GObject other){ if (other instanceof Block){ // Determine the horizontal distance between centers float h_dist = Math.abs((other.getX() + other.getWidth()/2) - (getX() + getWidth()/2)); // Now the vertical distance float v_dist = Math.abs((other.getY() + other.getHeight()/2) - (getY() + getHeight()/2)); // If h_dist > v_dist horizontal collision else vertical collision if (h_dist > v_dist){ // Are we moving right? if (getX()<other.getX()){ setX(other.getX()-getWidth()); } // Are we moving left? else if (getX()>other.getX()){ setX(other.getX()+other.getWidth()); } } else { // Are we moving up? if (jump.active){ jump.stop(); } // We are moving down else { setY(other.getY()-getHeight()); setVelocityY(0); onground = true; } } } } The problem is that the object jumps well but does not fall when moved out of platform. Here's an image describing the problem. I know I'm not checking underneath the object but I don't know how. The map is a list of objects and should I have to iterate over all the objects??? Thanks

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• Unable to install ubuntu on a AMD 64 bit system with a AMD Radeon HD 6670 graphics card

  - by Tom Wingrove

  I’ve been running a dual boot system (Ubuntu/Windows7) for two years or so with no problems. I recently built an AMD 64 Bit System, re-installed Windows but when I went to load Ubuntu inside Windows, hit a snag. The screen view during installation became small square blocks of colour, which obviously is a graphics drive problem. I tried various live disks both 32 & 64 bit for, Ubuntu 12.04, 11.10 & 10.10, all but Ubuntu 10.10 had the same problem. Ubuntu 10.10 loaded ok, installed the presented ATI graphics driver as usual but was left with the AMD Unsupported watermark at the bottom right of the screen. The graphics card installed in the computer is an MSI ATI Radeon HD 6670 (in effect an AMD Radeon HD 6670). I am fairly new to linux and while I can install and tweak the OS, I am rather baffled as to what to do. So my question is will an up to date ATI Driver be released in the near future for installation/live disks? Or am I going to have to downgrade my graphics card to use linux? Yours Tom Wingrove

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• Interpolation between two 3D points?

  - by meds

  I'm working with some splines which define a path a character follows (you can see a gameplay video here to get a better understanding of what's going on: http://www.youtube.com/watch?v=BndobjOiZ6g). Basically the characters 'forward' look direction is set to the 'forward' direction of the spline and when players tilt their phone left and right the character is strafed along its 'right' coordinate. The issue with this is (rather obviously) in performance, interpolating over a spline to find the nearest position and tangent relative to the player is an incredibly costly operation. To get by this I cache a finite number of positions in what I call 'SplineDetails', the class is as follows: public class SplineDetails { public SplineDetails() { Forward = Vector3.forward; Position = Vector3.one * float.MaxValue; Alpha = -1; } public float Alpha; // [0,1] measured along length of spline where 0 is the initial point and 1 is the end point of the spline public Vector3 Position; // the point of the spline at this alpha public Vector3 Forward; // the forward tangent of the spline at this alpha } I populate this with say 30 coordinates and I can give a rough estimate of a coordinate and 'forward' based on a position past in. It's not as accurate but it's much faster. But now I'd like to make the system work better by estimating positions and 'forward' directions by interpolating between two of the cached points though I'm stuck trying to figure out some logic. My first problem is, how can I determine between which two points the object is? Given each point can be placed at different intervals along the spline it could mean that two points in front or behind the object can be closer to the object. The other problem is to figure out the proportion between the two paths it's between, i.e. if there is a point a at coordinate (0,0,0) and point b at coordinate (1,0,0) if the object is at position (0.5,0,0) then the result it should give is '0.5' (as it is equal distance away from point a and point b). That's a simple example, but what if the object is at coordinate (0.5,3,0) for example?

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• Is it possible to change error messages for users connecting to network printers?

  - by eric.s

  We are cleaning up our print server (Win XP). To test that printers are no longer really there we have set up some tests. These tests have left us with 176 questionable printers. We have now set Print access to Everyone to Deny. Testing shows this gives the user a 5 Access is denied. message. We would like to change this message for the user, so when they call our workstudy's who answer the phone do not interpret this as a computer rights management issue and can route the call properly. Is it possible? Is this error number system wide, or just for printing errors? If it's not a system wide error where might the string for this error be?

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• How bad it's have two methods with the same name but differents signatures in two classes?

  - by Super User

  I have a design problem relationated with the public interface, the names of methods and the understanding of my API and my code. I have two classes like this: class A: ... function collision(self): .... ... class B: .... function _collision(self, another_object, l, r, t, b): .... The first class have one public method named collision and the second have one private method called _collision. The two methods differs in arguments type and number. In the API _m method is private. For the example let's say that the _collision method checks if the object is colliding with another_ object with certain conditions l, r, t, b (for example, collide the left side, the right side, etc) and returns true or false according to the case. The collision method, on the other hand, resolves all the collisions of the object with other objects. The two methods have the same name because I think is better avoid overload the design with different names for methods who do almost the same think, but in distinct contexts and classes. This is clear enough to the reader or I should change the method's name?

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• centos 100% disk full - How to remove log files, history, etc?

  - by kopeklan

  mysqld won't start because disk space is full: 101221 14:06:50 [ERROR] /usr/libexec/mysqld: Error writing file '/var/run/mysqld/mysqld.pid' (Errcode: 28) 101221 14:06:50 [ERROR] Can't start server: can't create PID file: No space left on device running df -h: Filesystem Size Used Avail Use% Mounted on /dev/sda2 16G 3.2G 12G 23% / /dev/sda5 4.8G 4.6G 0 100% /var /dev/sda3 430G 855M 407G 1% /home /dev/sda1 76M 24M 49M 33% /boot tmpfs 956M 0 956M 0% /dev/shm du -sh * in /var: 12K account 56M cache 24K db 32K empty 8.0K games 1.5G lib 8.0K local 32K lock 221M log 16K lost+found 0 mail 24K named 8.0K nis 8.0K opt 8.0K preserve 8.0K racoon 292K run 70M spool 8.0K tmp 76K webmin 2.6G www 20K yp in /dev/sda5, there is website files in /var/www. because this is first time, I have no idea which files to remove other than moving /var/www to other partition And one more, what is the right way to remove log files, history, etc in /dev/sda5?

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• How to shift a vector based on the rotation of another vector?

  - by bpierre

  I’m learning 2D programming, so excuse my approximations, and please, don’t hesitate to correct me. I am just trying to fire a bullet from a player. I’m using HTML canvas (top left origin). Here is a representation of my problem: The black vector represent the position of the player (the grey square). The green vector represent its direction. The red disc represents the target. The red vector represents the direction of a bullet, which will move in the direction of the target (red and dotted line). The blue cross represents the point from where I really want to fire the bullet (and the blue and dotted line represents its movement). This is how I draw the player (this is the player object. Position, direction and dimensions are 2D vectors): ctx.save(); ctx.translate(this.position.x, this.position.y); ctx.rotate(this.direction.getAngle()); ctx.drawImage(this.image, Math.round(-this.dimensions.x/2), Math.round(-this.dimensions.y/2), this.dimensions.x, this.dimensions.y); ctx.restore(); This is how I instanciate a new bullet: var bulletPosition = playerPosition.clone(); // Copy of the player position var bulletDirection = Vector2D.substract(targetPosition, playerPosition).normalize(); // Difference between the player and the target, normalized new Bullet(bulletPosition, bulletDirection); This is how I move the bullet (this is the bullet object): var speed = 5; this.position.add(Vector2D.multiply(this.direction, speed)); And this is how I draw the bullet (this is the bullet object): ctx.save(); ctx.translate(this.position.x, this.position.y); ctx.rotate(this.direction.getAngle()); ctx.fillRect(0, 0, 3, 3); ctx.restore(); How can I change the direction and position vectors of the bullet to ensure it is on the blue dotted line? I think I should represent the shift with a vector, but I can’t see how to use it.

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• How can I prevent users from installing software?

  - by Cypher

  Our organization is a bit different than most. During certain times of the year, we grow to thousands of employees, and during off-times, less than a hundred. Over the course of a few years, many thousands of people have come and gone in our offices, and left their legacy behind in the form of all sorts of unwanted, unapproved, (and sometimes unlicensed) software installs on our desktops. We are currently installing redundant domain controllers and upgrading current servers, all running Windows Server 2008 Enterprise, and will eventually be able to run a pure 2008 DC network. With that in mind, what are our options in being able to lock down users, such that they cannot install unauthorized software on systems without the assistance (or authorization) of the IT group? We need to support approximately 400 desktops, so automation is key. I've taken note of the Software Restrictions we can implement via Group Policy, but that implies that we already know what users will be installing and attempting to run... not quite so elegant. Any ideas?

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• DBA Best Practices - A Blog Series: Episode 2 - Password Lists

  - by Argenis

    Digital World, Digital Locks One of the biggest digital assets that any company has is its secrets. These include passwords, key rings, certificates, and any other digital asset used to protect another asset from tampering or unauthorized access. As a DBA, you are very likely to manage some of these assets for your company - and your employer trusts you with keeping them safe. Probably one of the most important of these assets are passwords. As you well know, the can be used anywhere: for service accounts, credentials, proxies, linked servers, DTS/SSIS packages, symmetrical keys, private keys, etc., etc. Have you given some thought to what you're doing to keep these passwords safe? Are you backing them up somewhere? Who else besides you can access them? Good-Ol’ Post-It Notes Under Your Keyboard If you have a password-protected Excel sheet for your passwords, I have bad news for you: Excel's level of encryption is good for your grandma's budget spreadsheet, not for a list of enterprise passwords. I will try to summarize the main point of this best practice in one sentence: You should keep your passwords on an encrypted, access and version-controlled, backed-up, well-known shared location that every DBA on your team is aware of, and maintain copies of this password "database" on your DBA's workstations. Now I have to break down that statement to you: - Encrypted: what’s the point of saving your passwords on a file that any Windows admin with enough privileges can read? - Access controlled: This one is pretty much self-explanatory. - Version controlled: Passwords change (and I’m really hoping you do change them) and version control would allow you to track what a previous password was if the utility you’ve chosen doesn’t handle that for you. - Backed-up: You want a safe copy of the password list to be kept offline, preferably in long term storage, with relative ease of restoring. - Well-known shared location: This is critical for teams: what good is a password list if only one person in the team knows where it is? I have seen multiple examples of this that work well. They all start with an encrypted database. Certainly you could leverage SQL Server's native encryption solutions like cell encryption for this. I have found such implementations to be impractical, for the most part. Enter The World Of Utilities There are a myriad of open source/free software solutions to help you here. One of my favorites is KeePass, which creates encrypted files that can be saved to a network share, Sharepoint, etc. KeePass has UIs for most operating systems, including Windows, MacOS, iOS, Android and Windows Phone. Other solutions I've used before worth mentioning include PasswordSafe and 1Password, with the latter one being a paid solution – but wildly popular in mobile devices. There are, of course, even more "enterprise-level" solutions available from 3rd party vendors. The truth is that most of the customers that I work with don't need that level of protection of their digital assets, and something like a KeePass database on Sharepoint suits them very well. What are you doing to safeguard your passwords? Leave a comment below, and join the discussion! Cheers, -Argenis

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• Labels mail merge repeats on subsequent pages?

  - by leeand00

  I'm trying to do a mail merge to print to labels. The first field in the document does not contain a { NEXT } field code, and because of this the records repeat between label pages for example: Notice how the records shift to the left as the next page is displayed? But how they start over again in an off by one manner? Now I've tried to fix this by using the first record displayed on a page to see if the page number is 1. If it not on page 1 of the mail merge then it should just move to the next record; otherwise it should just display the first record: This doesn't work however, because when I do the preview and display the {page} field code, it reports that I am always on page 1 and thus the same behavior continues instead of just moving to the next record on the next page.

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• How to have Windows 7 remember a password for a Domain

  - by Kelly Jones

  About eighteen months ago, I wrote a post covering how to clear saved passwords in Windows XP.  This week at work I was reminded how useful it is to not only deleted saved passwords, but to also setup wildcard credentials using this same interface. The scenario that I run into as consultant working at a client site, is that my laptop is not a member of the Windows Domain that my client uses to secure their network. So, when I need to access file shares, shared printers, or even the clients internal websites, I’m prompted for a name and password.  By creating a wildcard entry on my laptop (for the user account that the client issued to me), I avoid this prompt and can seamlessly access these resources.  (This also works when you’ve configured Outlook to access Exchange via RPC over HTTP.) How to create a credential wild card entry in Windows 7: Go to your Start Menu --> Type "user" into the Search box Click on the “Manage your credentials” in the column on the left Click on the “Add a Windows credential” link Enter the Domain (in my case my client’s domain), something like this: *.contoso.com Enter the username and password That’s it.  You should now be able to access resources in that Domain without being prompted for your name and password.  Please note: if you are required to change your password periodically for that domain, you’ll need to update your saved password as well.

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