Search Results

Search found 7337 results on 294 pages for 'john michael reed'.

Page 60/294 | < Previous Page | 56 57 58 59 60 61 62 63 64 65 66 67  | Next Page >

• How do you forcibly unmount a disk when you press the eject button on an optical drive?

  - by Michael Curran

  When upgrading my hardware, I also upgraded to Ubuntu 10.10. On my previous system (with 10.04 and earlier) when I ejected a disk from the optical drive, the subfolder in the /media directory was automatically removed. In my new 10.10 system, if I don't eject the disk using the "eject" command within the system, the disk remains mounted, even after a new disk is installed. The new drive is a Blu Ray drive, but I haven't noticed any other problems from it. Normally, this isn't a problem, but it makes installing applications that are spread over multiple CDs more difficult in many cases (i.e. Wine). Any advice?

  Read the article

• How to properly do weapon cool-down reload timer in multi-player laggy environment?

  - by John Murdoch

  I want to handle weapon cool-down timers in a fair and predictable way on both client on server. Situation: Multiple clients connected to server, which is doing hit detection / physics Clients have different latency for their connections to server ranging from 50ms to 500ms. They want to shoot weapons with fairly long reload/cool-down times (assume exactly 10 seconds) It is important that they get to shoot these weapons close to the cool-down time, as if some clients manage to shoot sooner than others (either because they are "early" or the others are "late") they gain a significant advantage. I need to show time remaining for reload on player's screen Clients can have clocks which are flat-out wrong (bad timezones, etc.) What I'm currently doing to deal with latency: Client collects server side state in a history, tagged with server timestamps Client assesses his time difference with server time: behindServerTimeNs = (behindServerTimeNs + (System.nanoTime() - receivedState.getServerTimeNs())) / 2 Client renders all state received from server 200 ms behind from his current time, adjusted by what he believes his time difference with server time is (whether due to wrong clocks, or lag). If he has server states on both sides of that calculated time, he (mostly LERP) interpolates between them, if not then he (LERP) extrapolates. No other client-side prediction of movement, e.g., to make his vehicle seem more responsive is done so far, but maybe will be added later So how do I properly add weapon reload timers? My first idea would be for the server to send each player the time when his reload will be done with each world state update, the client then adjusts it for the clock difference and thus can estimate when the reload will be finished in client-time (perhaps considering also for latency that the shoot message from client to server will take as well?), and if the user mashes the "shoot" button after (or perhaps even slightly before?) that time, send the shoot event. The server would get the shoot event and consider the time shot was made as the server time when it was received. It would then discard it if it is nowhere near reload time, execute it immediately if it is past reload time, and hold it for a few physics cycles until reload is done in case if it was received a bit early. It does all seem a bit convoluted, and I'm wondering whether it will work (e.g., whether it won't be the case that players with lower ping get better reload rates), and whether there are more elegant solutions to this problem.

  Read the article

• Quaternion based rotation and pivot position

  - by Michael IV

  I can't figure out how to perform matrix rotation using Quaternion while taking into account pivot position in OpenGL.What I am currently getting is rotation of the object around some point in the space and not a local pivot which is what I want. Here is the code [Using Java] Quaternion rotation method: public void rotateTo3(float xr, float yr, float zr) { _rotation.x = xr; _rotation.y = yr; _rotation.z = zr; Quaternion xrotQ = Glm.angleAxis((xr), Vec3.X_AXIS); Quaternion yrotQ = Glm.angleAxis((yr), Vec3.Y_AXIS); Quaternion zrotQ = Glm.angleAxis((zr), Vec3.Z_AXIS); xrotQ = Glm.normalize(xrotQ); yrotQ = Glm.normalize(yrotQ); zrotQ = Glm.normalize(zrotQ); Quaternion acumQuat; acumQuat = Quaternion.mul(xrotQ, yrotQ); acumQuat = Quaternion.mul(acumQuat, zrotQ); Mat4 rotMat = Glm.matCast(acumQuat); _model = new Mat4(1); scaleTo(_scaleX, _scaleY, _scaleZ); _model = Glm.translate(_model, new Vec3(_pivot.x, _pivot.y, 0)); _model =rotMat.mul(_model);//_model.mul(rotMat); //rotMat.mul(_model); _model = Glm.translate(_model, new Vec3(-_pivot.x, -_pivot.y, 0)); translateTo(_x, _y, _z); notifyTranformChange(); } Model matrix scale method: public void scaleTo(float x, float y, float z) { _model.set(0, x); _model.set(5, y); _model.set(10, z); _scaleX = x; _scaleY = y; _scaleZ = z; notifyTranformChange(); } Translate method: public void translateTo(float x, float y, float z) { _x = x - _pivot.x; _y = y - _pivot.y; _z = z; _position.x = _x; _position.y = _y; _position.z = _z; _model.set(12, _x); _model.set(13, _y); _model.set(14, _z); notifyTranformChange(); } But this method in which I don't use Quaternion works fine: public void rotate(Vec3 axis, float angleDegr) { _rotation.add(axis.scale(angleDegr)); // change to GLM: Mat4 backTr = new Mat4(1.0f); backTr = Glm.translate(backTr, new Vec3(_pivot.x, _pivot.y, 0)); backTr = Glm.rotate(backTr, angleDegr, axis); backTr = Glm.translate(backTr, new Vec3(-_pivot.x, -_pivot.y, 0)); _model =_model.mul(backTr);///backTr.mul(_model); notifyTranformChange(); }

  Read the article

• Is code like this a "train wreck" (in violation of Law of Demeter)?

  - by Michael Kjörling

  Browsing through some code I've written, I came across the following construct which got me thinking. At a first glance, it seems clean enough. Yes, in the actual code the getLocation() method has a slightly more specific name which better describes exactly which location it gets. service.setLocation(this.configuration.getLocation().toString()); In this case, service is an instance variable of a known type, declared within the method. this.configuration comes from being passed in to the class constructor, and is an instance of a class implementing a specific interface (which mandates a public getLocation() method). Hence, the return type of the expression this.configuration.getLocation() is known; specifically in this case, it is a java.net.URL, whereas service.setLocation() wants a String. Since the two types String and URL are not directly compatible, some sort of conversion is required to fit the square peg in the round hole. However, according to the Law of Demeter as cited in Clean Code, a method f in class C should only call methods on C, objects created by or passed as arguments to f, and objects held in instance variables of C. Anything beyond that (the final toString() in my particular case above, unless you consider a temporary object created as a result of the method invocation itself, in which case the whole Law seems to be moot) is disallowed. Is there a valid reasoning why a call like the above, given the constraints listed, should be discouraged or even disallowed? Or am I just being overly nitpicky? If I were to implement a method URLToString() which simply calls toString() on a URL object (such as that returned by getLocation()) passed to it as a parameter, and returns the result, I could wrap the getLocation() call in it to achieve exactly the same result; effectively, I would just move the conversion one step outward. Would that somehow make it acceptable? (It seems to me, intuitively, that it should not make any difference either way, since all that does is move things around a little. However, going by the letter of the Law of Demeter as cited, it would be acceptable, since I would then be operating directly on a parameter to a function.) Would it make any difference if this was about something slightly more exotic than calling toString() on a standard type? When answering, do keep in mind that altering the behavior or API of the type that the service variable is of is not practical. Also, for the sake of argument, let's say that altering the return type of getLocation() is also impractical.

  Read the article

• Managing products on a an ecommerce site [closed]

  - by John

  I've had a site that sells widgets for many years. I do not inventory my widgets, but the cost of adding them to the site and makings sure the site is current is becoming cost prohibitive. Here are the facts: I sell a single class of widget. I have about 50,000 widgets on my site. I have about 100 vendors that create and dropship the products when they get an order from me via email. Each vendor carries from 50 to 5000 types of widgets. Vendors all have websites with images and descriptions of their products. Each widget is produced in limited supply and usually sell out in 1-5 years. Prices of the widget often go up, sometimes more than 50% before they sell out. My vendors aren't very tech sophisticated. They have websites with their products, but most can't supply an api or database dump. Their websites usually display retail prices to the public, but I login or refer to a price list (usually excel) for wholesale prices. As it stands now, I hire local people to add and describe each widget to our website. It usually takes a person 4 minutes to add a widget to the site. This doesn't include moving to a new vendor. I feel like the upload/edit process is as good as it can get via a form/website. The problem is that it is getting very expensive to upload and keep the widget inventory current. I often get orders for something after it's sold out from the vendor or the price is wrong. This seems like it would be a problem in many industries. Can anyone suggest the cheapest way to upload inventory and ensure prices are current from my vendors? I'm assuming it will involve outsourcing, but I would like ideas on how to setup the compensation model.

  Read the article

• 'dd' access to a drive

  - by John

  I've been working with making custom bootloader and kernel code (not necessarily Linux kernel). I'm putting the images on USB, and was using dd to place them on the sector they needed to be on, and I'm getting tired of burning the image to /dev/sda instead of /dev/sdb (effectively destroying my hard drive). So I was wondering if I could somehow give user access to the 'dd' command, but only to the /dev/sdb drive, so that if I accidentally type /dev/sda it won't let me, because I wouldn't have run the command as sudo or root.

  Read the article

• Frequent disconnects using wlan AR9285

  - by John Neil

  I'm getting a large number of disconnects from my wireless when I switched to oneiric server (I did not see these happen with oneiric desktop) from my AR9285 wireless LAN device. Here is the syslog snippet: Oct 17 09:43:17 weather kernel: [ 1537.329138] wlan0: deauthenticated from 00:12:17:7a:8e:42 (Reason: 7) Oct 17 09:43:17 weather kernel: [ 1537.340409] cfg80211: All devices are disconnected, going to restore regulatory settings Oct 17 09:43:17 weather kernel: [ 1537.340423] cfg80211: Restoring regulatory settings Oct 17 09:43:17 weather kernel: [ 1537.340435] cfg80211: Calling CRDA to update world regulatory domain Oct 17 09:43:17 weather kernel: [ 1537.348571] cfg80211: Ignoring regulatory request Set by core since the driver uses its own custom regulatory domain Oct 17 09:43:17 weather kernel: [ 1537.348581] cfg80211: World regulatory domain updated: Oct 17 09:43:17 weather kernel: [ 1537.348586] cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp) Oct 17 09:43:17 weather kernel: [ 1537.348594] cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) Oct 17 09:43:17 weather kernel: [ 1537.348600] cfg80211: (2457000 KHz - 2482000 KHz @ 20000 KHz), (300 mBi, 2000 mBm) Oct 17 09:43:17 weather kernel: [ 1537.348607] cfg80211: (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm) Oct 17 09:43:17 weather kernel: [ 1537.348613] cfg80211: (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) Oct 17 09:43:17 weather kernel: [ 1537.348620] cfg80211: (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) Here is the relevant lspci output: # lspci | grep Atheros 02:00.0 Network controller: Atheros Communications Inc. AR9285 Wireless Network Adapter (PCI-Express) (rev 01) I have done quite a bit of searching and saw discussions for previous versions of ubuntu that recommended installing the linux-backports-modules package. However, this does not appear to be available for oneiric (just the headers are listed as a package). Any advice on how to achieve a stable wireless connection for this server? It's location mitigates against using a wired connection.

  Read the article

• I have a global .gitignore but files aren't being ignored, why?

  - by Michael Durrant

  I have a .gitignore_global in my home directory durrantm.../durrantm$ pwd /home/durrantm durrantm.../durrantm$ ls .git* .gitconfig .gitignore_global The .gitignore_global has: durrantm.../durrantm$ head .gitignore_global # RubyMine # .idea/ # Compiled source # ################### *.dll *.exe # Logs and databases # ###################### but when I git status for a project I still end up getting the .idea files when I start using rubyMine. So my git status still shows this: # modified: .idea/dataSources.xml # modified: .idea/linker.iml # modified: .idea/misc.xml # modified: .idea/workspace.xml I have run git config --global core.excludesfile ~/.gitignore_global bvut it didn't help.

  Read the article

• WebCenter Content Technical Resources

  - by John Klinke

  Some useful WebCenter Content technical resources that you might not be aware of: WebCenter Content Support's Twitter Account: Follow Oracle WebCenter Content Support on Twitter @OrcleWCCSupport to keep informed about webcasts, patches, new releases, tips and tricks, and more. Oracle WebCenter & ADF Architecture Team Blog: Frequent posts by the Oracle Fusion Middleware A-Team discussing WebCenter implementation and configuration topics.  

  Read the article

• What is the difference between "Redirection" and "Pipe"?

  - by John Threepwood

  This question may sound a bit stupid, but I can not really see the difference between redirection and pipes. Redirection is used to redirect the stdout/stdin/stderr, e.g. ls > log.txt. Pipes are used to give the output of a command as input to another command, e.g. ls | grep file.txt. But why are there two operators for the same thing ? Why not just write ls > grep to pass the output through, isn't this just a kind of redirection also ? What I am missing ?

  Read the article

• Genetic Considerations in User Interface Design

  - by John Paul Cook

  There are several different genetic factors that are highly relevant to good user interface design. Color blindness is probably the best known. But did you know about motion sickness and epilepsy? We’ve been discussing how genetic factors should be considered in user interface design in one of my classes at Vanderbilt University School of Nursing. According to the National Library of Medicine, approximately 8% of males and 0.5% of females have red-green color discrimination problems with the most...(read more)

  Read the article

• boxes adding up to 100% of the browser [closed]

  - by Michael

  I want to have 2 boxes right next to each other, one with a fixed width, and another with a width that will change based on the size of the browser. The box has overflow:auto, and I'm trying to get the first box to act as a side bar that will follow you down the page. But of course I can't seem to achieve this, and have come here hoping someone could give me some examples, or point me in the right direction. Thanks!

  Read the article

• Review of Agile Project Management Software

  - by John K. Hines

  Bright Green Projects have an admittedly older blog post entitled Review of Agile Project Management Software | Scrum Kanban Methodology. Since I haven't had time to review Scrum project management tools in quite awhile, it was nice to find a write-up that's as succinct as this one. The thing I like the best about Bright Green's site, besides the product, is the vocabulary they use to describe Agile software development. For example, the couple Scrum with the development methodology they're using (Lean Kanban). Many organisations simply say they're using Scrum, which itself doesn't proscribe any engineering practices. It would add some clarity for teams to adopt the Scrum-Method terminology. At least then you could know if you're walking into a Scrum-Chaos situation.

  Read the article

• HTML5-Canvas: worth using ImpactJS or other framework?

  - by John

  I've been making an HTML5 game without any type of external framework. I haven't found a reason to use one so far. However, there is one thing I'm wondering about. On my Galaxy Nexus, I get about ~40fps. While that would usually be a decent framerate, my game is a rather fast paced game with a gamepad. Because of this, it feels very unsatisfying to play when not capped at 60fps. Are there frameworks out there that can improve performance without toning down on graphics? Or is there something I could do myself without necessarily having to use a framework? I've looked over the basic things such as sticking to integer coordinates, but I didn't see an increase in performance whatsoever? I did some testing with jsperf and results were virtually identical. Does this depend more on the browser?

  Read the article

• Can I hook my xbox up to my Ubuntu PC

  - by Anonymous John

  My old xbox 360 won't eject disks, it makes a sound,but won't open. I want to play games, so I think I could hook it up to my PC running Ubuntu 13.10 64-bit and maybe I could use my PC's DVD drive. Can this work at all, or am I just crazy? There is an HDMI port on the back of my graphics card. If I can't do that, is there any software for Ubuntu that can rip the game off of a CD and put it on a flash drive? I have heard xbmcbuntu works great for gaming, but it doesn't work with my PC.

  Read the article

• New website, plans to go large. How do you protect yourself?

  - by John Redyns

  I'm planning to create a new site that (in hopes) will make it to a decent state of popularity and use. I have made sites before, but they weren't serious, with any intended purpose other than personal and friend use. I've never been able to find a solid post on good steps to protecting yourself, and your site/idea before you start. This site will always be free, and will not be bringing it any revenue by ads or whatnot, but I plan to in the future and would want to make I'm in the clear legally for one. Do you need to copyright anything? Or anything of the same concept as copyright? Do I make an LLC to operate it under? Apologies for this extremely poorly written question, basically I want to be both legal, and I want to make sure nobody can just rip my idea or name(s). (I'm sure this will be more concise as questions here are asked) Thanks

  Read the article

• Social media and special characters

  - by John Paul Cook

  I’ve previously blogged about using Unicode with T-SQL to put superscripts, subscripts, and special characters into text strings. Unicode is also useful in formatting social media such as Facebook, Twitter, and that dinosaur otherwise known as email. When you can’t set properties of text such as italicizing the subject line of an email message or adding subscripts to a Facebook post, Unicode can make it possible. There are Unicode characters that are intrinsically italicized. Others are intrinsically...(read more)

  Read the article

• How to document experimental or incomplete APIs like @deprecated?

  - by Michael Levy

  Is there a good term that is similar but different than "deprecate" to mean that a method or API is in the code base but should not be used because its implementation is not complete or will likely change? (Yeah, I know, those methods shouldn't be public, yada yada yada. I didn't create my situation, I'm just trying to make the best of it.) What do people suggest? Experimental, Incomplete, something else? If I'm building javadoc documentation for this API that is still in flux, should I use the @deprecated tag or is there a better convention? To me @deprecated implies that this API is old and a newer preferred mechanism is available. In my situation, there is no alternative, but some of the methods in the API are not finished and so should not be used. At this point I cannot make them private, but I'd like to put clear warnings in the docs.

  Read the article

• Using Alt-select in SSMS, Word, and elsewhere

  - by John Paul Cook

  A surprising number of database people and Windows users in general don’t know about Alt select . This is a Windows technique not unique to SSMS that allows a user to select an arbitrary rectangular region of text and delete it, cut it, or copy it. Where I find Alt select particularly useful in SSMS is when I have a bunch of inline comments that are too far to the right. I want to delete much of the whitespace in front of them to move them to the left without disturbing any of the rest of the T-SQL....(read more)

  Read the article

• Breaking up a large PHP object used to abstract the database. Best practices?

  - by John Kershaw

  Two years ago it was thought a single object with functions such as $database->get_user_from_id($ID) would be a good idea. The functions return objects (not arrays), and the front-end code never worries about the database. This was great, until we started growing the database. There's now 30+ tables, and around 150 functions in the database object. It's getting impractical and unmanageable and I'm going to be breaking it up. What is a good solution to this problem? The project is large, so there's a limit to the extent I can change things. My current plan is to extend the current object for each table, then have the database object contain these. So, the above example would turn into (assume "user" is a table) $database->user->get_user_from_id($ID). Instead of one large file, we would have a file for every table.

  Read the article

• How do I handle "Firmware file X not found" stopping bootup?

  - by John Baber

  I recently upgraded my desktop mac to Precise and now can't get past the Ubuntu 12.04 splash page. The splash freezes with [ 19.931097] b32-phy0 ERROR: Firmware file "b43/ucode16_mimo.fw" not found [ 19.9311126] b32-phy0 ERROR: You must go to http://wireless.kernel.org/en/users/Drivers/b43#devicefirmware and download the correct firmware for this driver version. Please carefully read all instructions on this website. written on it This is when I choose 3.2.0-generic from the grub menu. If I choose to load up older kernels, I still get the same thing. How can I make my computer finish booting again? I'm able to ssh into the machine and poke around, but the actual screen freezes at the splash.

  Read the article

• Managing Regulated Content in WebCenter: USDM and Oracle Offer a New Part 11 Compliant Solution for Life Sciences

  - by Michael Snow

  Guest post today provided by Oracle partner, USDM  Regulated Content in WebCenterUSDM and Oracle offer a new Part 11 compliant solution for Life Sciences (White Paper) Life science customers now have the ability to take advantage of all of the benefits of Oracle’s WebCenter Content, a global leader in Enterprise Content Management.   For the past year, USDM has been developing best practice compliance solutions to meet regulated content management requirements for 21 CFR Part 11 in WebCenter Content. USDM has been an expert in ECM for life sciences since 1999 and in 2011, certified that WebCenter was a 21CFR Part 11 compliant content management platform (White Paper).  In addition, USDM has built Validation Accelerators Packs for WebCenter to enable life science organizations to quickly and cost effectively validate this world class solution.With the Part 11 certification, Oracle’s WebCenter now provides regulated life science organizations  the ability to manage REGULATORY content in WebCenter, as well as the ability to take advantage of ALL of the additional functionality of WebCenter, including  a complete, open, and integrated portfolio of portal, web experience management, content management and social networking technology.  Here are a few screen shot examples of Part 11 functionality included in the product: E-Sign, E-Sign Rendor, Meta Data History, Audit Trail Report, and Access Reporting. Gone are the days that life science companies have to spend millions of dollars a year to implement, maintain, and validate ECM systems that no longer meet the ever changing business and regulatory requirements.  Life science companies now have the ability to use WebCenter Content, an ECM system with a substantially lower cost of ownership and unsurpassed functionality.Oracle has been #1 in life sciences because of their ability to develop cost effective, easy-to-use, scalable solutions which help increase insight and efficiency to drive growth for their customers.  Adding a world class ECM solution to this product portfolio allows life science organizations the chance to get rid of costly ECM systems that no longer meet their needs and use WebCenter, part of the Oracle Fusion Technology stack, with their other leading enterprise applications.USDM provides:•    Expertise in Life Science ECM Business Processes•    Prebuilt Life Science Configuration in WebCenter •    Validation Accelerator Packs for WebCenterUSDM is very proud to support Oracle’s expanding commitment to Life Sciences…. For more information please contact:  [email protected] Oracle will be exhibiting at DIA 2012 in Philadelphia on June 25-27. Stop by our booth (#2825) to learn more about the advantages of a centralized ECM strategy and see the Oracle WebCenter Content solution, our 21 CFR Part 11 compliant content management platform.

  Read the article

• What are best practices for testing programs with stochastic behavior?

  - by John Doucette

  Doing R&D work, I often find myself writing programs that have some large degree of randomness in their behavior. For example, when I work in Genetic Programming, I often write programs that generate and execute arbitrary random source code. A problem with testing such code is that bugs are often intermittent and can be very hard to reproduce. This goes beyond just setting a random seed to the same value and starting execution over. For instance, code might read a message from the kernal ring buffer, and then make conditional jumps on the message contents. Naturally, the ring buffer's state will have changed when one later attempts to reproduce the issue. Even though this behavior is a feature it can trigger other code in unexpected ways, and thus often reveals bugs that unit tests (or human testers) don't find. Are there established best practices for testing systems of this sort? If so, some references would be very helpful. If not, any other suggestions are welcome!

  Read the article

• Ubuntu 13.10 won't boot and hangs on a black screen

  - by Anonymous John

  I installed Ubuntu 13.10 64-bit today and I sat on the internet most of the day after installation. I shut the computer down and went bowling with my family. When I came back, I turned on my computer and it came to the boot screen as usual, but then the screen went black and stayed black. Can this be solved or do I have to install Ubuntu 13.04. My dad does not know about this and I do not want to get yelled at for an hour, so I need an answer before midnight mountain time, otherwise I will install Ubuntu 13.04 so I won't get yelled at in the morning.Thanks to anyone who answers this.

  Read the article

• Updatable columnstore index, sp_spaceused and sys.partitions

  - by Michael Zilberstein

  Columnstore index in SQL Server 2014 contains 2 new important features: it can be clustered and it is updateable. So I decided to play with both. As a “control group” I’ve taken my old columnstore index demo from one of the ISUG (Israeli SQL Server Usergroup) sessions. The script itself isn’t important – it creates partition function with 7 partitions (actually 8 but one remains empty), table on it and populates the table with 63 million rows – 9 million in each partition. So I used the same script...(read more)

  Read the article

< Previous Page | 56 57 58 59 60 61 62 63 64 65 66 67  | Next Page >