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  • How do I prevent a KActor from changing the orientation of its Z-Axis?

    - by Almo
    So I have an object that inherits from KActor that I would like to behave as a dynamic physics object, but I want its Z-Axis to remain upright, but very stiffly. I've tried the bStayUpright that triggers the "Stay Upright Spring". The problem is, it's a spring, and the object in question oscillates into position when I want it to remain oriented properly without wobbling. In the image above, the yellow block has fallen onto the gray box, and it is currently pivoting about the contact point as it tries to right itself. Should I be tweaking the StayUprightMaxTorque and StayUprightTorqueFactor parameters, or should I be using a Constraint of some sort?

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  • Programming methodologies at stackoverflow

    - by Prototype Stark
    I am in the middle of starting up a software company where we would use ASP.NET MVC and ASP.NET WebAPI extensively at shop. We will be a group of 4 and no more than 10 will work on any particular project at any point in time(these are ground rules). I would like to know, what programming methodologies best suit a small(guerilla) team. Specifically, I would also like to know which ones are being used at famous ASP.NET MVC shops like Stackoverflow. The ones I know are: Scrum and Waterfall(I know its bad). But what's the recommended way of development for smaller, group of 9-10 team. Also, will Test Driven Development help such a team in producing quality software? Are there any other techniques the team will have to know to be good at producing quality software?

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  • Ubuntu 13.10 Security Key

    - by Toby J
    I was attempting to install Ubuntu 13.10 today and it came up with a screen asking for me to setup a security key. In the first place, I'm not sure what a security key is, but It said I would have to enter it everytime I booted Ubuntu so I assume it's the same thing as a logon password in Windows 8. Is there anyway I can bypass this step without setting up a security key or logon password? I hate these things and have always avoided them in Windows. I don't need them as there is never anyone but myself and my wife on our computers. We are retired, no children or nieces, nephews, friends, etc. who ever use our computer and we don't have any security information such as SS #, etc. on it. Also, I quit the installation at this point but I was not seeing any of the screen prompts as listed in the setup instructions on the Ubuntu website. Has the setup for Ubuntu 13.10 changed since these instructions were written? Thanks

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  • Copyrighting software, templates, etc. under real name or screen name?

    - by Abluescarab
    My question is hopefully simple--should I copyright my work (art, software, web design, etc.) under my real name or my screen name? My real name and screen name are also easily connected with a bit of searching, so does it really matter in the end? I'm not a professional (at this point). I read this article: Is it a bad idea to sell Android apps in the Android Market under your real name? and they recommended releasing on the app market under a company name. I also read this article: On what name should I claim copyright in open source software?, but that didn't answer my question. I know it probably matters for big projects, but for little projects, does it matter? Thanks ahead of time!

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  • Thinking differently about BI delivery

    - by jamiet
    My day job involves implementing Business Intelligence (BI) solutions which, as I have said before, is simply about giving people the information they need to do their jobs. I’m always interested in learning about new ways of achieving that aim and that is my motivation for writing blog entries that are not concerned with SQL or SQL Server per se. Implementing BI systems usually involves hacking together a bunch third party products with some in-house “glue” and delivering information using some shiny, expensive web-based front-end tool; the list of vendors that supply such tools is big and ever-growing. No doubt these tools have their place and of late I have started to wonder whether they can be supplemented with different ways of delivering information. The problem I have with these separate web-based tools is exactly that – they are separate web-based tools. What’s the problem with that you might ask? I’ll explain! They force the information worker to go somewhere unfamiliar in order to get the information they need to do their jobs. Would it not be better if we could deliver information into the tools that those information workers are already using and not force them to go somewhere else? I look at the rise of blogging over recent years and I realise that what made them popular is that people can subscribe to RSS feeds and have information pushed to them in their tool of choice rather than them having to go and find the information for themselves in a tool that has been foisted upon them. Would it not be a good idea to adopt the principle of subscription for the benefit of delivering BI information as well? I think it would and in the rest of this blog entry I’ll outline such a scenario where the power of subscription could be used to enhance the delivery of information to information workers. Typical questions that information workers ask might be: What are my year-on-year sales figures? What was my footfall yesterday? How many widgets have I sold so far today? Each of those questions includes a time element and that shouldn’t surprise us, any BI system that I have worked on includes the dimension of time. Now, what do people use to view and organise their time-oriented information? Its not a trick question, they use a calendar and in the enterprise space more often than not that calendar is managed using Outlook. Given then that information workers are already looking at their calendar in Outlook anyway would it not make sense then to deliver information into that same calendar? Of course it would. Calendars are a great way of visualising information such as sales figures. Observe: Just in this single screenshot I have managed to convey a multitude of information. The information worker can see, at a glance, information about hourly/daily/weekly/monthly sales and, moreover, he/she is viewing that information right inside the tool that they use every day. There is no effort on the part of him/her, the information just appears hour after hour, day after day. Taking the idea further, each one of those calendar items could be a mini-dashboard in its own right. Double-clicking on an item could show a plethora of other information about that time slot such as breaking the sales down per region or year-over-year comparisons. Perhaps the title could employ a sparkline? Loads of possibilities. The point is that calendars are a completely natural way to visualise information; we should make more use of them! The real beauty of delivering information using calendars for us BI developers is that it should be so easy. In the case of Outlook we don’t need to write complicated VBA code that can go and manipulate a person’s calendar, simply publishing data in a format that Outlook can understand is sufficient and happily such formats already exist; iCalendar is the accepted format and the even more flexible xCalendar is hopefully on its way as well.   I’d like to make one last point and this one is with my SQL Server hat on. Reporting Services 2008 R2 introduced the ability to publish data as subscribable Atom feeds so it seems logical that it could also be a vehicle for delivering calendar feeds too. If you think this would be a good idea go and vote for it at Publish data as iCalendar feeds and please please please add some comments (especially if you vote it down). Work smarter, not harder! @Jamiet Share this post: email it! | bookmark it! | digg it! | reddit! | kick it! | live it!

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  • Forward to other domain with CNAME

    - by xybrek
    In my GoDaddy DNS manager, I made some A Record that points to *.mirror for my domain Now when I access URL 123.mirror.mydomain.com from the browser I can see that my app is loaded, and its all OK. My problem now is when doing a CNAME point to the URL above on another domain like this: Accessing 123.otherdomain.com which I expect to "forward to" 123.mirror.mydomain.com I only get this 404 error: The IP 173.194.71.121 is actually ghs.googlehosted.com What I am missing here? Why 123.otherdomain.com which points to 123.mirror.mydomain.com cannot open that page and I think google is handing the web page request?

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  • Use open-source programs in your company?

    - by eversor
    Is there any cons of making your employees use open-source programs in your company? I am planning to start a bussiness and I wonder why companies usually work with proprietary software, as Microsoft Word to quote the most famous one. Why do not they use Open Office (or Libre Office) etc.? From my point of view, you can save a lot of money and help the open-source community by, for instance, giving them part of your benefits in form of donations. I do not know any (medium-big) company that does this. Probably you could give me some examples, just to prove that this model of open-source usage/collaboration works rocks.

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  • Opensource package for securly allowing users to log in and provide information

    - by JTS
    I have a site written in mostly php and html. I also have a sql database of personal information like names and addresses. I would like my users to be able to log in to my website with a login I can email or snail mail to them, and view and edit their information on my database. Users can currently enter information online I and store it in my database but they can't view or edit stored information. I can add the code to do this, but when I give users the ability to view information I suddenly have a lot more security concerns. Is there an open source package to deal with allowing users to do something like this? Or is there an established convention for this? I know this is a pretty basic question, and there might be some good literature about it that I have yet to find, so if someone can just point me in the direction of some of that information, or better yet give me firsthand some information about this that would be great.

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  • Duplicate domain names - .net and .com Create separate pages, or redirect?

    - by guisasso
    In a SEO point of view: This website has a good amount of traffic for a local business, but also ships some merchandise. While the .net domain (registered first) is associated with the local busines (google places, maps, etc...) the .com domain only redirects to the .net domain. Is it good, bad or okay to create a different page for the domain .com for example, that would be pretty simple, but would link to the 10 different categories of products that this company sells? I know links are good, so there's that, but what else is good, or bad? Thanks in advance!

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  • SQL Server v.Next (Denali) : Why you should start testing early

    - by AaronBertrand
    Denali is coming, whether you like it or not. You may not be an early adopter and you may not have plans on your current calendar, but at some point you will need to move your apps and databases to this release - or one very much like it. There are a lot of great new features you will be able to take advantage of, but not everything is a double rainbow. There are some changes that will break your spirit if you let them. What does it mean? I go over several breaking changes in my presentation that...(read more)

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  • Proxied calls not working as expected

    - by AndyH
    I have been modifying an application to have a cleaner client/server split to allow for load splitting and resource sharing etc. Everything is written to an interface so it was easy to add a remoting layer to the interface using a proxy. Everything worked fine. The next phase was to add a caching layer to the interface and again this worked fine and speed was improved but not as much as I would have expected. On inspection it became very clear what was going on. I feel sure that this behavior has been seen many times before and there is probably a design pattern to solve the problem but it eludes me and I'm not even sure how to describe it. It is easiest explained with an example. Let's imagine the interface is interface IMyCode { List<IThing> getLots( List<String> ); IThing getOne( String id ); } The getLots() method calls getOne() and fills up the list before returning. The interface is implemented at the client which is proxied to a remoting client which then calls the remoting server which in turn calls the implementation at the server. At the client and the server layers there is also a cache. So we have :- Client interface | Client cache | Remote client | Remote server | Server cache | Server interface If we call getOne("A") at the client interface, the call is passed to the client cache which faults. This then calls the remote client which passes the call to the remote server. This then calls the server cache which also faults and so the call is eventually passed to the server interface which actually gets the IThing. In turn the server cache is filled and finally the client cache also. If getOne("A") is again called at the client interface the client cache has the data and it gets returned immediately. If a second client called getOne("B") it would fill the server cache with "B" as well as it's own client cache. Then, when the first client calls getOne("B") the client cache faults but the server cache has the data. This is all as one would expect and works well. Now lets call getLots( [ "C", "D" ] ). This works as you would expect by calling getOne() twice but there is a subtlety here. The call to getLots() cannot directly make use of the cache. Therefore the sequence is to call the client interface which in turn calls the remote client, then the remote server and eventually the server interface. This then calls getOne() to fill the list before returning. The problem is that the getOne() calls are being satisfied at the server when ideally they should be satisfied at the client. If you imagine that the client/server link is really slow then it becomes clear why the client call is more efficient than the server call once the client cache has the data. This example is contrived to illustrate the point. The more general problem is that you cannot just keep adding proxied layers to an interface and expect it to work as you would imagine. As soon as the call goes 'through' the proxy any subsequent calls are on the proxied side rather than 'self' side. Have I failed to learn or not learned something correctly? All this is implemented in Java and I haven't used EJBs. It seems that the example may be confusing. The problem is nothing to do with cache efficiencies. It is more to do with an illusion created by the use of proxies or AOP techniques in general. When you have an object whose class implements an interface there is an assumption that a call on that object might make further calls on that same object. For example, public String getInternalString() { return InetAddress.getLocalHost().toString(); } public String getString() { return getInternalString(); } If you get an object and call getString() the result depends where the code is running. If you add a remoting proxy to the class then the result could be different for calls to getString() and getInternalString() on the same object. This is because the initial call gets 'deproxied' before the actual method is called. I find this not only confusing but I wonder how I can control this behavior especially as the use of the proxy may be by a third party. The concept is fine but the practice is certainly not what I expected. Have I missed the point somewhere?

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  • AutoMatically Creating New Sites When New Users Sign Up [closed]

    - by Eddy Freeman
    I would like to know how hosted eCommerce sites like www.shopify.com, www.3dCart.com etc.. automatically creates new sites when new users sign up. What kind of tools do they use to create those sites into the users profile. I have tried googling but couldn't find an answer. Does any of you guys have any knowledge or experience that you can share with me? Or do you know a tutorial that you can point me to? I hope my question is clear. Thanks for your help.

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  • Should I use my domain registrar's nameserver or find an alternative?

    - by Fazal
    I've recently been moving my client's sites as well as my own and my friends to a cloud server instance I've set up. I don't have a nameserver setup on my instance because I'm not sure how to deploy and manage that side of things yet. I'm using the default nameservers where possible for the sites and just changing the A record DNS settings to point at the server. Some clients are complaining that the sites are running slower then before (since I changed nameservers back to the defaults). Some of the domain registrars are a nightmare to deal with and I can't convince some of my clients to leave them. Is there a sort of paid service I can use instead?

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  • Les processeurs multi-cores pourraient gagner en performances, grâce à des communications internes six fois plus rapides

    Les processeurs multi-cores pourraient gagner en performances, grâce à des communications internes six fois plus rapides Des chercheurs américains, de l'Université de la Caroline du Nord, on fait une découverte qui pourrait améliorer les performances des puces multicores. En effet, la majorité des processeurs actuels de 4 ou 8 coeurs, connaissent des difficultés à voir leurs cores communiquer directement entre eux. Mais une alternative serait possible. Au lieu de devoir passer par la mémoire pour envoyer et récupérer des données, plusieurs coeurs travaillant sur la même tâche pourraient bénéficier d'une accélération matérielle. En effet, les ingénieurs développant le projet ont mis au point une HAQu (h...

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  • What makes Erlang suitable for cloud applications?

    - by Duncan
    We are starting a new project and implementing on our corporations's instantiation of an openstack cloud (see http://www.openstack.org/). The project is security tooling for our corporation. We currently run many hundreds of dedicated servers for security tools and are moving them to our corporations instantiation of openstack. Other projects in my company currently use erlang in several distributed server applications, and other Q/A point out erlang is used in several popular cloud services. I am trying to convince others to consider where it might be applicable on our project. What are erlang's strengths for cloud programming? Where are areas it is particularly appropriate to use erlang?

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  • How to Get Vine App for Windows Phone in Canada

    - by D'Arcy Lussier
    Originally posted on: http://geekswithblogs.net/dlussier/archive/2013/11/12/154613.aspxI wanted to download the Vine app for Windows Phone, but I couldn’t find it in the app store when I browsed it on my Nokia. I went to the app’s page on the app store where I saw this: One of my Twitter peeps from Winnipeg, Len, commented that he was able to install it from the website. So I went back and noticed that there’s a “Download and Install Manually” link towards the bottom of the page, which will let you download the .XAP file directly. So I emailed myself the link, opened it on my phone, and voila – Vine is now installed! What’s the point of limiting apps by region if we can just manually download and install the file anyway? Weird. D

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  • How do I install pgAdmin III for postgreSQL 9.2?

    - by Vector
    I have a Windows server that runs postgresql 9.2. I want to hit it using pgAdmin III from my Ubuntu 12.10 workstation box. I installed pgAdmin III from synaptic and also tried direct download from postgreSQL site using software installer. Regardless, I can get only get pgAdmin III for postgresql 9.1. When I run pgAdmin III and point to my server I get an error message telling me that the database is 9.2 and my pgAdmin III is for 9.1, isn't compatible with 9.2. I can access the server itself fine OK from the Ubuntu box - I have Python programs that hit the database with no problems - but I need pgAdmin III for 9.2 running under Ubuntu 12.10. Is it available? Where do I get it?

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  • Sortie de Qt 4.7.2, une version de maintenance du framework et du nouvelle EDI de Nokia Qt Creator 2.1

    Sortie de Qt 4.7.2 Avec la nouvelle version de l'EDI de Nokia Qt Creator 2.1 Mise à jour du 01/03/2011, par dourouc05 Qt 4.7.2 est sorti ce jour. Ce n'est qu'une version de maintenance, avec son lot de corrections de bogues, grâce au retour utilisateur et aux contributions, depuis la sortie de la version 4.7.1, en novembre dernier. Point plus important, il marque la sortie officielle de Qt Quick, LA nouvelle fonctionnalité clé de Qt, permettant de créer très simplement des applications légères et des interfaces utilisateur. Pour mener à bien sa mission, il se base sur QML, un langage de déclaration d'interfaces, sur le module Qt Declarative et d...

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  • User Experience Tablet Guide Released on UX Direct Site

    - by Madhuri Kolhatkar
    Tablet Guide available on UX Direct NOW Responding to a popular demand from our customers, Oracle Application's user experience team is happy to externalize its new design guide for creating tablet based solutions for Enterprise applications on the UX Direct website. Download and use this guide to create great and successful customer experience for your users. UX Tablet Guide for Oracle Applications This guide provides basic help for designers, developers, and project managers trying to approach tablet design and testing from an enterprise point of view. If you are embarking on a tablet application design project, start here first. In the spirit of tablet design, it is delivered in the form of an iPad interactive iBook .Use this guide and tell us what you think. We would love to see examples of your creations. Watch this space for more updates and new and innovative design tools.

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  • Booting 11.10 from USB stick on MacBook Pro 5,1 fails

    - by Helge Stenström
    I've created a bootable memory stick on a Windows computer, and tested it on an HP PC. It's made from a 64-bit image of Ubuntu 11.10, downloaded from http://www.ubuntu.com/download/ubuntu/download. When I boot from this memory stick, there is some kind of boot menu, where I can choose to run Ubuntu from the memory stick, or install. I select Run from memory stick. (the words may be wrong here, I'm taking it from memory.) From this point, the screen is black (but backlighted), and I can't do anything but turn off the computer. It gets hot, too. Has anyone been more successful than me? Are there known issues? The computer is a 15 inch MacBook Pro 5,1 (unibody, late 2008), 4 GB memory.

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  • How to fire a bullet in a specific direction?

    - by Mike
    I am developing an Android game. I have problem with bullet firing. It's a space ship that has to fire bullets but right now it's firing in a random direction. I have to fire a bullet to the enemy from the only one point on the nose of the ship. Right now the bullets fire sometimes from the tailpart or other. So that's a problem. How do I give a bullet direction and how to fire it from only the head of my space ship?

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  • kernel mem parameter

    - by Ashfame
    As a last resort to my question, I am yet to try the mem parameter of kernel to force it to use the specified amount of RAM. Short Summary - I can only see 3.2GB RAM on a 64bit OS and am not sure ifs a hardware limitation, so wants to try as I found a post on Ubuntuforums. My question is if its ok to play with my resident Ubuntu install or should I be using a live bootable usb? What values do I try (I have 6GB with only 3.2GB being usable) and how to keep it safe? I don't want to burn any of my hardware component at this point of time or make the system unbootable. Running Ubuntu 11.10 with kernel 3.0.0-13-generic

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  • Summit reflections

    - by Rob Farley
    So far, my three PASS Summit experiences have been notably different to each other. My first, I wasn’t on the board and I gave two regular sessions and a Lightning Talk in which I told jokes. My second, I was a board advisor, and I delivered a precon, a spotlight and a Lightning Talk in which I sang. My third (last week), I was a full board director, and I didn’t present at all. Let’s not talk about next year. I’m not sure there are many options left. This year, I noticed that a lot more people recognised me and said hello. I guess that’s potentially because of the singing last year, but could also be because board elections can bring a fair bit of attention, and because of the effort I’ve put in through things like 24HOP... Yeah, ok. It’d be the singing. My approach was very different though. I was watching things through different eyes. I looked for the things that seemed to be working and the things that didn’t. I had staff there again, and was curious to know how their things were working out. I knew a lot more about what was going on behind the scenes to make various things happen, and although very little about the Summit was actually my responsibility (based on not having that portfolio), my perspective had moved considerably. Before the Summit started, Board Members had been given notebooks – an idea Tom (who heads up PASS’ marketing) had come up with after being inspired by seeing Bill walk around with a notebook. The plan was to take notes about feedback we got from people. It was a good thing, and the notebook forms a nice pair with the SQLBits one I got a couple of years ago when I last spoke there. I think one of the biggest impacts of this was that during the first keynote, Bill told everyone present about the notebooks. This set a tone of “we’re listening”, and a number of people were definitely keen to tell us things that would cause us to pull out our notebooks. PASSTV was a new thing this year. Justin, the host, featured on the couch and talked a lot of people about a lot of things, including me (he talked to me about a lot of things, I don’t think he talked to a lot people about me). Reaching people through online methods is something which interests me a lot – it has huge potential, and I love the idea of being able to broadcast to people who are unable to attend in person. I’m keen to see how this medium can be developed over time. People who know me will know that I’m a keen advocate of certification – I've been SQL certified since version 6.5, and have even been involved in creating exams. However, I don’t believe in studying for exams. I think training is worthwhile for learning new skills, but the goal should be on learning those skills, not on passing an exam. Exams should be for proving that the skills are there, not a goal in themselves. The PASS Summit is an excellent place to take exams though, and with an attitude of professional development throughout the event, why not? So I did. I wasn’t expecting to take one, but I was persuaded and took the MCM Knowledge Exam. I hadn’t even looked at the syllabus, but tried it anyway. I was very tired, and even fell asleep at one point during it. I’ll find out my result at some point in the future – the Prometric site just says “Tested” at the moment. As I said, it wasn’t something I was expecting to do, but it was good to have something unexpected during the week. Of course it was good to catch up with old friends and make new ones. I feel like every time I’m in the US I see things develop a bit more, with more and more people knowing who I am, who my staff are, and recognising the LobsterPot brand. I missed being a presenter, but I definitely enjoyed seeing many friends on the list of presenters. I won’t try to list them, because there are so many these days that people might feel sad if I don’t mention them. For those that I managed to see, I was pleased to see that the majority of them have lifted their presentation skills since I last saw them, and I happily told them as much. One person who I will mention was Paul White, who travelled from New Zealand to his first PASS Summit. He gave two sessions (a regular session and a half-day), packed large rooms of people, and had everyone buzzing with enthusiasm. I spoke to him after the event, and he told me that his expectations were blown away. Paul isn’t normally a fan of crowds, and the thought of 4000 people would have been scary. But he told me he had no idea that people would welcome him so well, be so friendly and so down to earth. He’s seen the significance of the SQL Server community, and says he’ll be back. It’ll be good to see him there. Will you be there too?

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  • How to restruct RAID 10?

    - by user276851
    We would like to alter the partition without losing data. Here is the sketch of the plan. I am wondering if it is doable using mdadm; and if so, please kindly point some reference on how to carry out the following steps. For RAID 10, there are four disks used. (1 2)(3 4) The idea is to work on 1 and 3 while keeping 2 and 4 as backup. 1: break RAID 10 into two arrays of RAID 0 => (1 3) (2 4) (how to?) 2: re-partition and format (1 3) 3: copy data from (2 4) to (1 3) 4: re-partition and format (2 4) exactly as (1 3) 5: join (2 4) with (1 3) to form RAID 10 (how to?) Does it sound doable? Thanks a lot! Add: It looks like this guy (drumfile) is doing something similar, but lack of enough detail.

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  • 14.04 default locales

    - by Seán Ó Séaghdha
    After a new install of 14.04 I have quite a few extra locales/languages. Is this normal? I installed using English (GB) I think since en_AU isn't an option. At some point apt offered a list of unused files which I removed. Now when I open Language Support it warns me that "Language support is not installed completely" and offers to reinstall this list... kde-l10n-zhcn thunderbird-locale-en-gb thunderbird-locale-es libreoffice-l10n-en-gb libreoffice-help-es libreoffice-help-en-gb wspanish thunderbird-locale-zh-cn myspell-es ibus-sunpinyin mythes-en-au kde-l10n-es libreoffice-l10n-zh-cn fonts-arphic-uming ibus-table-wubi thunderbird-locale-es-es thunderbird-locale-zh-hans libreoffice-l10n-en-za thunderbird-locale-es-ar hunspell-en-ca libreoffice-l10n-es libreoffice-help-zh-cn kde-l10n-engb fonts-arphic-ukai So are Spanish and Chinese installed by default in all installations now? Why do I need Canadian English spellchecking installed?

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