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• Is there a limit of emails/pictures per Gravatar account?

  - by Steve Taylor

  I'm building a site to connect patients to doctors. Each doctor will have a profile picture. I'm quite happy to manually maintain the profile pictures as there won't be that many doctors nor will they have a need to change their picture very often, if at all. I thought of using Gravatar to host all these profile pictures. The idea is to create a single Gravatar account then keep adding email addresses to it in the form [email protected] and associating each one with a new image. Does anyone know, however, if I will run into any per-account limit? If so, it wouldn't be feasible because I would end up with a bunch of Gravatar accounts instead of just the one.

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• Oracle's Vision for the Social-Enabled Enterprise - Partner Webcast. September 10th

  - by Richard Lefebvre

  Smart companies are developing social media strategies to engage customers, gain brand insights, and transform employee collaboration and recruitment. Oracle is powering this transformation with the most comprehensive enterprise social platform that lets you: Monitor and engage in social conversations Collect and analyze social data Build and grow brands through social media Integrate enterprisewide social functionality into a single system Create rich social applications Join Oracle President Mark Hurd and senior Oracle executives to learn more about Oracle’s vision for the social-enabled enterprise. Register now for this Webcast.  - Mon., Sept. 10, 2012 - 10 a.m. PT / 19:00 CET

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• keyboard shortcut to switch focus between separate X screens?

  - by ang mo

  I'm using XFCE on a dual monitor setup, with Xorg configured to separate X screens (neither twinview nor cinerama is working on GF470 with latest nvidia drivers). I'm not using xrandr. Suppose I have firefox running on one screen (:0.0) and thunderbird on the other (:0.1). When I want to switch focus from thunderbird to firefox, I need to move my mouse pointer to the firefox window and click (alt-tab switches between windows on a single screen only). Is there any keyboard shortcut for switching focus between screens?

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• Implementing a Custom Coherence PartitionAssignmentStrategy

  - by jpurdy

  A recent A-Team engagement required the development of a custom PartitionAssignmentStrategy (PAS). By way of background, a PAS is an implementation of a Java interface that controls how a Coherence partitioned cache service assigns partitions (primary and backup copies) across the available set of storage-enabled members. While seemingly straightforward, this is actually a very difficult problem to solve. Traditionally, Coherence used a distributed algorithm spread across the cache servers (and as of Coherence 3.7, this is still the default implementation). With the introduction of the PAS interface, the model of operation was changed so that the logic would run solely in the cache service senior member. Obviously, this makes the development of a custom PAS vastly less complex, and in practice does not introduce a significant single point of failure/bottleneck. Note that Coherence ships with a default PAS implementation but it is not used by default. Further, custom PAS implementations are uncommon (this engagement was the first custom implementation that we know of). The particular implementation mentioned above also faced challenges related to managing multiple backup copies but that won't be discussed here. There were a few challenges that arose during design and implementation: Naive algorithms had an unreasonable upper bound of computational cost. There was significant complexity associated with configurations where the member count varied significantly between physical machines. Most of the complexity of a PAS is related to rebalancing, not initial assignment (which is usually fairly simple). A custom PAS may need to solve several problems simultaneously, such as: Ensuring that each member has a similar number of primary and backup partitions (e.g. each member has the same number of primary and backup partitions) Ensuring that each member carries similar responsibility (e.g. the most heavily loaded member has no more than one partition more than the least loaded). Ensuring that each partition is on the same member as a corresponding local resource (e.g. for applications that use partitioning across message queues, to ensure that each partition is collocated with its corresponding message queue). Ensuring that a given member holds no more than a given number of partitions (e.g. no member has more than 10 partitions) Ensuring that backups are placed far enough away from the primaries (e.g. on a different physical machine or a different blade enclosure) Achieving the above goals while ensuring that partition movement is minimized. These objectives can be even more complicated when the topology of the cluster is irregular. For example, if multiple cluster members may exist on each physical machine, then clearly the possibility exists that at certain points (e.g. following a member failure), the number of members on each machine may vary, in certain cases significantly so. Consider the case where there are three physical machines, with 3, 3 and 9 members each (respectively). This introduces complexity since the backups for the 9 members on the the largest machine must be spread across the other 6 members (to ensure placement on different physical machines), preventing an even distribution. For any given problem like this, there are usually reasonable compromises available, but the key point is that objectives may conflict under extreme (but not at all unlikely) circumstances. The most obvious general purpose partition assignment algorithm (possibly the only general purpose one) is to define a scoring function for a given mapping of partitions to members, and then apply that function to each possible permutation, selecting the most optimal permutation. This would result in N! (factorial) evaluations of the scoring function. This is clearly impractical for all but the smallest values of N (e.g. a partition count in the single digits). It's difficult to prove that more efficient general purpose algorithms don't exist, but the key take away from this is that algorithms will tend to either have exorbitant worst case performance or may fail to find optimal solutions (or both) -- it is very important to be able to show that worst case performance is acceptable. This quickly leads to the conclusion that the problem must be further constrained, perhaps by limiting functionality or by using domain-specific optimizations. Unfortunately, it can be very difficult to design these more focused algorithms. In the specific case mentioned, we constrained the solution space to very small clusters (in terms of machine count) with small partition counts and supported exactly two backup copies, and accepted the fact that partition movement could potentially be significant (preferring to solve that issue through brute force). We then used the out-of-the-box PAS implementation as a fallback, delegating to it for configurations that were not supported by our algorithm. Our experience was that the PAS interface is quite usable, but there are intrinsic challenges to designing PAS implementations that should be very carefully evaluated before committing to that approach.

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• EXADATA & GoldenGate - the perfect combination for thetrainline.com

  - by maria costanzo

  enhanced the customer experience sustaining rapid search and booking times for hundreds of millions of journey requests per annum EXADATA & GoldenGate : the perfect combination thetrainline.com used Oracle GoldenGate to migrate data from its legacy system to two  Oracle Exadata Database Machine X2-2 HC Quarter Rack instances to reduce downtime, avoid  risk of data loss, and eliminate the need for complex programming. "Oracle GoldenGate enabled us to complete the migration of three terabytes to Oracle Exadata, within a single 30-minute system outage,” East said. "Without Oracle GoldenGate, we would have required a 20 hour outage window to complete the migration, something that was completely unacceptable."  Discover more at the following link  

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• If all variables are a subset of the superkey, is the database design 5NF? [migrated]

  - by Lukazoid

  I have a table called LogMessages, which has the following columns: Level A numeric value which represents Trace, Debug, Info, Warning, Error or Fatal Time A UTC time Message Foreign key to a Messages table Source Foreign key to a Sources table User Foreign key to a Users table From what I can see, all of these columns are a part of the super key; if any single value differs to an existing row, a new row can be created. My question is, does this design comply to fifth normal form? I am unsure as some groups of data will be repeating, however I don't believe this violates 5NF? (correct me if I'm wrong)

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• Dashboard to aggregate Google Analytics, Facebook, YouTube etc tracking data?

  - by Richard

  I'd like to see as much tracking data as possible about my online presence, in one single dashboard - so views/conversions from Google Analytics data, the performance of my Facebook campaigns via the Insights API, views/clicks from my YouTube campaigns, etc. This could be as simple as a graph with time on the x-axis, and key indicators from each source on the y-axis (conversions from Analytics, likes on Facebook, views on YouTube, etc). The idea is that I can see customer engagement with each source, over time. I can write my own such dashboard easily enough, but I wondered if there was something off-the-shelf that already did this. Apologies if this isn't the right forum for such a question - would appreciate tips for the best place to ask.

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• How to quantify product work in Resume?

  - by mob1lejunkie

  One of things I do in my Resume is try to quantify the impact my work has had in the particular company I was with at the time. The reason is it shows the value my work had added to the business. Is this what you guys do as well or am I the only one? In my previous job this was easy as I worked on short/medium internal applications and it was fairly easy to measure end result. For example, external consulting company quoted $50,000 for an application Business Services department wanted I completed it in 3 days so I say I saved the company $48,000. I have been in my current job for 3 years but all of it has been on 1 single well established product. About 30% work is maintenance and 70% work is on new modules. I have worked on various modules like API (WCF), Security (2 factor authentication), etc. How should I quantify work on modules? Many thanks.

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• How do I reset my display settings from the command line?

  - by Trevor

  I'm running 12.10 on a dell e5400 laptop and I used xrandr to get the dual monitors working that I connect through a laptop dock. I used xrandr again to switch back to the laptop display when I undocked. The problem is, after a restart, the laptop seems to want to come back up with the dual monitor configuration and the laptop screen stays blank. I can boot into single user mode but I'm not sure what to do from there to get the display settings reset. Any ideas? There's no xorg.conf file so I'm not sure where the settings are stored anymore. Thanks.

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• What is the traditional way to maintain extensibility in a database-driven application like this?

  - by Jsess

  I'm working on a simple application for a game in Java that allows a user to record whether they have collected a given item and how much experience it contains. This will work for multiple item types (weapons, armor) and each will have its own tab with a list of all items that qualify under it. Making changes as new types are added is not such a big deal (if a clothing slot is added, for instance), but new items are added to the game all the time in biweekly patches, and I'm not sure what the traditional/customary way to make sure the application is user-extensible without requiring me to would be. Whether that would be adding a configuration menu that allows users to add news items (new rows to the local SQLite database) or a text file with something similar, but I'm certain there's a well-accepted way to do this that I'm not aware of. I'm new to databases and ignorant of the solution, so what's the professional/futureproof way to do this?

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• Ubuntu Variant / Linux Distros which uses least system resources (RAM, CPU)?

  - by elegantonyx

  I have a netbook (an older Asus EEEPC 1005HA) which I want to get rid of Windoze on (I like Windows, but I don't think it works well in a netbook environment). Basically, my question is which Ubuntu variant will use the least RAM and CPU running idle, and/or the same question except when running Firefox and Libreoffice Writer, say. I am also open to suggestions of non-Ubuntu Linux distros, but since this is AskUbuntu I thought the first question would be more appropriate. I have a disk drive which I can attach to the netbook, so it doesn't have to be a Ubuntu Variant / Linux Distro which solely boots from a USB drive. I have at my disposal: DVDs, DVD writer/ disk drive, 4gb flash drive, 8 gb flash drive I was thinking either Lubuntu or Archbang / Crunchbang but I would like some help from more knowledgable people Specs: Can't boot into it right now, but I think I have either Intel Atom N270 @1.60ghz OR Intel Atom N280 @1.66ghz (single core, I think) 2gb RAM 160 GB hard drive

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• Satellite website or redirect

  - by Ben

  We're running a campaign for specific industries within our target market. Our main web site has a page for each industry. We also own domains for each industry i.e: FoodWidgets.com, ElectricalWidgets.com, ChemicalWidgets.com. Of the following methods, which is likely to make the best SEO improvements: Just link each domain to the main web site Forward each domain to the relevant page on the main site e.g. FoodWidgets.com (302) redirects to http://www.MainSite.com/industries/food Create a single page "satellite" web site for each domain with the same content as the industry page on the main site.

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• Why is my content database so large?

  - by PeterBrunone

  If your SharePoint site collection hasn't grown, but your content database has, the most likely culprit is versioning.  If a list -- or worse, a library -- has versioning enabled, the default is to keep every single one.  That means that every time someone edits and checks in a document, its storage footprint increases by the size of the document (and probably a little more).The solution?  It could be a bit painful, but you'll need to go back into each library and restrict the number of versions to keep (three is sufficient for most uses, but your needs may vary).  I suggest keeping only major versions as well, since minor versions are really just stopping points on the way to a published document.Of course if you have a real business need to keep all those versions around, then you'll want to look into an archiving solution that will take the old versions out of the content database but still make them available if necessary.

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• What is a light-weight "slideshow" script that could integrate w/ CMS?

  - by aslum

  I'm looking to reduce the footprint of my Strict html 4.01 front page. One possible way is to combine much of the "upcoming events" into a single small box, and have them automagically switch which one is displayed every few seconds. I'm sure there are a bunch of this kind of thing written already, and surely an open source one exists, but I haven't had much luck find one. I'd prefer javascript to jQuery as installing jQuery might not be an option, but if the best-fit script requires jQuery I'd certainly be willing to investigate that route. If it can display content from Wordpress that would be ideal.

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• Class design for calling "the same method" on different classes from one place

  - by betatester07

  Let me introduce my situation: I have Java EE application and in one package, I want to have classes which will act primarily as cache for some data from database, for example: class that will hold all articles for our website class that will hold all categories etc. Every class should have some update() method, which will update data for that class from database and also some other methods for data manipulation specific for that data type. Now, I would like to call update() method for all class instances (there will be exactly one class instance for every class) from one place. What is the best design?

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• Django - how should I implement generic apps that have dependencies on other generic apps?

  - by MikeRand

  Hi all, I'm using Marty Alchin's Django app that creates historical records (add, change, delete) based on models found in other Django apps (found in chapter 11 of Pro Django). Question: how do I implement this historical_records app into my other generic Django apps while still maintaining loose coupling? For example, I have a generic app (forecast) that manages a Forecast (of any other model). For one project, I'd like to use historical_records so that I can track changes to a Forecast instance. But I don't want to require all future projects that might want to use forecast to also use historical_records. Any guidance would be greatly appreciated. Thanks, Mike

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• Is it relevant to warn about truncating real constants to 32 bits?

  - by zneak

  I'm toying around with LLVM and looking at what it would take to make yet another strongly-typed language, and now that I'm around the syntax, I've noticed that it seems to be a pet peeve of strongly typed language to warn people that their constants won't fit inside a float: // both in Java and C# float foo = 3.2; // error: implicitly truncating a double into a float // or something along these lines Why doesn't this work in Java and C#? I know it's easy to add the f after the 3.2, but is it really doing anything useful? Must I really be that aware that I'm using single-precision reals instead of double-precision reals? Maybe I'm just missing something (which, basically, is why I'm asking). Note that float foo = [const] is not the same thing as float foo = [double variable], where requiring the cast seems normal to me.

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• Need a Holistic view of your Concurrent Processing? Choose CP Analyzer

  - by user793044

  The Concurrent Processing Analyzer is a Self-Service Health-Check script which reviews the overall Concurrent Processing Footprint, analyzes the current configurations and settings for the environment providing feedback and recommendations on Best Practices. This is a non-invasive script which provides recommended actions to be performed on the instance it was run on.  For production instances, always apply any changes to a recent clone to ensure an expected outcome. Benefits include: E-Business Applications Concurrent Processing Analyzer Overview E-Business Applications Concurrent Request Analysis E-Business Applications Concurrent Manager Analysis Identifies Concurrent System Setup and configurations Identifies and recommends Concurrent Best Practices Easy to add Tool for regular Concurrent Maintenance Execute Analysis anytime to compare trending from past outputs Go to Doc ID 1411723.1 for more details and script download. Feedback welcome!

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• New Oracle Cloud support in OEPE

  - by gstachni

  Oracle Enterprise Pack for Eclipse 12c (12.1.1.1.1) includes updated support for development with the Java Cloud Service. Users can now do iterative development against their Java Cloud Service instance in addition to testing against local and remote WebLogic Server installations. Some details of the cloud tools are below: Templates and wizards to create projects and server configurations for Oracle Java Cloud Service Develop applications to run and deploy to the cloud, including Oracle ADF. Check cloud server runtime and deployment logs in new log analyzers Test applications before deployment with integrated whitelist scans. Whitelist tools support as-you-type validation, project build validation, and on demand scans to highlight coding violations. Errors are reported in application source, the Problems view, and a new Whitelist violations view. Access the Oracle Public Cloud administrative consoles directly from within Eclipse.

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• Webcast: Oracle's Vision For The Socially-Enabled Enterprise

  - by Michael Hylton

  Smart companies are developing social media strategies to engage customers, gain brand insights, and transform employee collaboration and recruitment. Oracle is powering this transformation with the most comprehensive enterprise social platform that lets you:     Monitor and engage in social conversations     Collect and analyze social data     Build and grow brands through social media     Integrate enterprise-wide social functionality into a single system     Create rich social applications Join Oracle President Mark Hurd and senior Oracle executives to learn more about Oracle’s vision for the social-enabled enterprise.  Click here to register.

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• Webcast: Oracle's Vision For The Socially-Enabled Enterprise

  - by Michael Hylton

  Smart companies are developing social media strategies to engage customers, gain brand insights, and transform employee collaboration and recruitment. Oracle is powering this transformation with the most comprehensive enterprise social platform that lets you:     Monitor and engage in social conversations     Collect and analyze social data     Build and grow brands through social media     Integrate enterprise-wide social functionality into a single system     Create rich social applications Join Oracle President Mark Hurd and senior Oracle executives to learn more about Oracle’s vision for the social-enabled enterprise.  Click here to register.

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• Google Analytics: tracking subdomains for a profile defined for a subdomain

  - by Alex G

  Hope you can help. We have set up a single property under our Google Analytics account. That property's default URL is set to subdomain1.example.com. We would now like to track multiple subdomains for example.com, under the same property. Seems easy enough: we just need to add _gaq.push(['_setDomainName', 'example.com']); to our tracking code, right? But my question is: does it matter if a) we don't need to track www.example.com (this is tracked under a seperate account and property) and b) the default URL for our property is set to subdomain1.example.com? Will either of these have any impact on data collection?

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• New windows from the dock in Gnome Shell

  - by Andrea

  I am using Gnome Shell on Ubuntu 11.10, and I frequently use workspaces, as the shell encourages to do. My only complaint is that it is slow to place different windows of the same program in different workspaces. What I would like to do: click on an empty workspace, click on the Nautilus icon in the dock and browse to the correct folder. Then click on another empty workspace, click on the Nautilus icon and so on. This does not work: the second time I open Nautilus, the dock lets me switch to the previous instance, which is almost never what I want. So I have to click on the Nautilus icon, open a new window, place it on a different desktop, switch to that folder and finally browse to the correct folder. Is there a way to simplify this flow? It would be even better if I was able to link a specific folder from the dock, or better yet to have something similar to a Unity lens, where I can choose between the most used folders.

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• I'm having trouble understanding these exercises wording.

  - by KasHKoW

  Exercise 1-20. Write a program detab that replaces tabs in the input with the proper number of blanks to space to the next tab stop. Assume a fixed set of tab stops, say every n columns. Should n be a variable or a symbolic parameter? Exercise 1-21. Write a program entab that replaces strings of blanks by the minimum number of tabs and blanks to achieve the same spacing. Use the same tab stops as for detab. When either a tab or a single blank would suffice to reach a tab stop, which should be given preference? could you paraphrase these for me. thanks

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• Are there compatibility issues opening Visual Studio Professional projects in Visual Studio Express, and vice versa? [migrated]

  - by theGreenCabbage

  Disclaimer: I have taken a look at the 50+ StackExchange forums to find the right place, and it seems /Programmers/ is the most suitable Exchange for this. If this is the wrong place to ask this, however, please let me know - I will personally delete the thread. I am in the process of downloading a single license for Visual Studio 2013 for my firm of 2-3 developers. One license is approximately $498.00 USD. As a small firm, our funds are short, but since we will be creating commercial software, we decided we will be needing the features of the Professional edition. At the same time, our decision is to use the Express edition for the rest of the two developers. My question is - will there be compatibility issues between Express projects and Professional projects for Visual Studio?

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