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  • Does My Computer Use More Electricity When Charging USB Devices?

    - by Jason Fitzpatrick
    Your computer consumes a large amount of power just idling there awaiting your command, does charging a smartphone or tablet off one of the USB ports impose much of a demand on it? Today’s Question & Answer session comes to us courtesy of SuperUser—a subdivision of Stack Exchange, a community-driven grouping of Q&A web sites. Image available as wallpaper at WallpapersWide.    

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  • Firefox Speed Test

    <b>SilverWav's Journal:</b> "I have a large html file (9MB, 20k records in a table). FF takes 30sec to open it, Chromium takes 5secs. The filter on it uses js and is very fast in Chromium (10sec) but in FF > 5min :("

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  • Sql Table Refactoring Challenge

    Ive been working a bit on cleaning up a large table to make it more efficient.  I pretty much know what I need to do at this point, but I figured Id offer up a challenge for my readers, to see if they can catch everything I have as well as to see if Ive missed anything.  So to that end, I give you my table: CREATE TABLE [dbo].[lq_ActivityLog]( [ID] [bigint] IDENTITY(1,1) NOT NULL, [PlacementID] [int] NOT NULL, [CreativeID] [int] NOT NULL, [PublisherID] [int] NOT NULL, [CountryCode] [nvarchar](10) NOT NULL, [RequestedZoneID] [int] NOT NULL, [AboveFold] [int] NOT NULL, [Period] [datetime] NOT NULL, [Clicks] [int] NOT NULL, [Impressions] [int] NOT NULL, CONSTRAINT [PK_lq_ActivityLog2] PRIMARY KEY CLUSTERED ( [Period] ASC, [PlacementID] ASC, [CreativeID] ASC, [PublisherID] ASC, [RequestedZoneID] ASC, [AboveFold] ASC, [CountryCode] ASC)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]) ON [PRIMARY] And now some assumptions and additional information: The table has 200,000,000 rows currently PlacementID ranges from 1 to 5000 and should support at least 50,000 CreativeID ranges from 1 to 5000 and should support at least 50,000 PublisherID ranges from 1 to 500 and should support at least 50,000 CountryCode is a 2-character ISO standard (e.g. US) and there is a country table with an integer ID already.  There are < 300 rows. RequestedZoneID ranges from 1 to 100 and should support at least 50,000 AboveFold has values of 1, 0, or 1 only. Period is a date (no time). Clicks range from 0 to 5000. Impressions range from 0 to 5000000. The table is currently write-mostly.  Its primary purpose is to log advertising activity as quickly as possible.  Nothing in the rest of the system reads from it except for batch jobs that pull the data into summary tables. Heres the current information on the database tables size: Design Goals This table has been in use for about 5 years and has performed very well during that time.  The only complaints we have are that it is quite large and also there are occasionally timeouts for queries that reference it, particularly when batch jobs are pulling data from it.  Any changes should be made with an eye toward keeping write performance optimal  while trying to reduce space and improve read performance / eliminate timeouts during read operations. Refactor There are, I suggest to you, some glaringly obvious optimizations that can be made to this table.  And Im sure there are some ninja tweaks known to SQL gurus that would be a big help as well.  Ill post my own suggested changes in a follow-up post for now feel free to comment with your suggestions. 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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  • YouTube Loses Music Videos!

    As a regular visitor of YouTube it saddens me to hear a large proportion of music videos will not be available to watch in the UK on the site for the foreseeable future due to an ongoing dispute betw... [Author: Chris Holgate - Computers and Internet - May 13, 2010]

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  • How do I create a background image on web page?

    - by kasha
    I am a new designer so hopefully this question isn't too basic! How do I create a background image on a webpage for a programmer? I designed the page in photoshop and I would like to know how to send the background image (the 25% opacity buildings overlay). I would be happy to send the main image (but it is too large and I imagine would slow the site and loading time drastically). here is the link to the design... http://problemio.com/home_page_1_1.pdf

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  • Can't boot from usb after a few successful boots

    - by janzeze
    I have ubuntu 11.10 on my usb flash maxell (4 gb) i installed it with universal usb installer and in the beginning everything worked just fine. I installed a few apps (skype, audations, vlc, codecs and a web camera app) it continued to works. but since yesterday it doesn't boot it shows me the operating system loading screen (ubuntu with the dots turning orange and white) and nothing more... please if anyone can help?

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  • WordPress SEO Services

    Blogging has become a popular way to promote a website or product. Updated daily, with fresh and relevant material, good bloggers can quickly generate a large following. Like a virus, the popularity of both the blog and the bloggers' site, will spread and grow. The only problem is, it takes a lot of time, energy and know-how to properly manage a blog. Many business owners are turning to WordPress SEO services to ensure their WordPress blog or website is as effective as possible.

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  • How to Truncate the Log File

    - by Derek Dieter
    Sometimes after one or more large transactions, the t-log (transaction log) will become full. In these particular cases you may receive an error message indicating the transaction log is full. In order to alleviate this issue, you need to find the names of the transaction logs on your system and then shrink them. To find the [...]

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  • Tiling Problem Solutions for Various Size "Dominoes"

    - by user67081
    I've got an interesting tiling problem, I have a large square image (size 128k so 131072 squares) with dimensons 256x512... I want to fill this image with certain grain types (a 1x1 tile, a 1x2 strip, a 2x1 strip, and 2x2 square) and have no overlap, no holes, and no extension past the image boundary. Given some probability for each of these grain types, a list of the number required to be placed is generated for each. Obviously an iterative/brute force method doesn't work well here if we just randomly place the pieces, instead a certain algorithm is required. 1) all 2x2 square grains are randomly placed until exhaustion. 2) 1x2 and 2x1 grains are randomly placed alternatively until exhaustion 3) the remaining 1x1 tiles are placed to fill in all holes. It turns out this algorithm works pretty well for some cases and has no problem filling the entire image, however as you might guess, increasing the probability (and thus number) of 1x2 and 2x1 grains eventually causes the placement to stall (since there are too many holes created by the strips and not all them can be placed). My approach to this solution has been as follows: 1) Create a mini-image of size 8x8 or 16x16. 2) Fill this image randomly and following the algorithm specified above so that the desired probability of the entire image is realized in the mini-image. 3) Create N of these mini-images and then randomly successively place them in the large image. Unfortunately there are some downfalls to this simplification. 1) given the small size of the mini-images, nailing an exact probability for the entire image is not possible. Example if I want p(2x1)=P(1x2)=0.4, the mini image may only give 0.41 as the closes probability. 2) The mini-images create a pseudo boundary where no overlaps occur which isn't really descriptive of the model this is being used for. 3) There is only a fixed number of mini-images so i'm not sure how random this really is. I'm really just looking to brainstorm about possible solutions to this. My main concern is really to nail down closer probabilities, now one might suggest I just increase the mini-image size. Well I have, and it turns out that in certain cases(p(1x2)=p(2x1)=0.5) the mini-image 16x16 isn't even iteratively solvable.. So it's pretty obvious how difficult it is to randomly solve this for anything greater than 8x8 sizes.. So I'd love to hear some ideas. Thanks

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  • What is occurring in the world of server-side technologies in regards to the mobile app boom?

    - by Akromyk
    With mobile technologies becoming increasingly popular what is happening on the server-side with most of these apps when they need to communicate with a back end? I'm used to the world of technology from 10 years ago when most resources were accessed by requesting a dynamic web page that behind the seen used a server-side language to get the information it needed from a relational database. Is this still the case, and if not, what are the big changes?

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  • Do Small Companies Also Need An SSL Certificate

    The internet has enabled even the small companies to compete with the large companies, but the small companies need offer some of the best online services to their customers. Online shopping is picki... [Author: Jack Melde - Computers and Internet - May 01, 2010]

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  • RIA Services Samples Project on CodePlex

    Announcing a CodePlex project with RIA Services sample apps and extensions...[Full post continued here...]...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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  • Partitioned Tables, Indexes and Execution Plans: a Cautionary Tale

    Table partitioning is a blessing in that it makes large tables that have varying access patterns more scalable and manageable, but it is a mixed blessing. It is important to understand the down-side before using table partitioning. "SQL Backup Pro 7 improves on an already wonderful product" - Don KolendaHave you tried version 7 yet? Get faster, smaller, fully verified backups. Download a free trial of SQL Backup Pro 7.

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  • Glassfish to WebLogic Migration

    - by JuergenKress
    At WebLogic Community Workspace ( WebLogic Community membership required) you can find Migrating Apps from GlassFish to Oracle WehbLogic Server with Ease.pptx WebLogic Partner Community For regular information become a member in the WebLogic Partner Community please visit: http://www.oracle.com/partners/goto/wls-emea ( OPN account required). If you need support with your account please contact the Oracle Partner Business Center. Blog Twitter LinkedIn Mix Forum Wiki Technorati Tags: Glassfish,WebLogic,WebLogic Community,Oracle,OPN,Jürgen Kress

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  • Existent js libs for tileset / map loading and rendering?

    - by ylluminate
    I'm building an rts style overhead tileset game with JavaScript (particularly using Ember.js framework as a base). The map is so large that I'd very much like to be able to load and render the board and layered items in a Google Maps'esque. I'm curious as to whether there are existing libs that would be helpful and already well thought out in these regards vs trying to reinvent the wheel. Are there any such libraries or code examples that would be useful in this area of board / map management?

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  • Managing Printers with Group Policy, PowerShell, and Print Management

    Just because it is possible to do many configuration jobs 'click by bleeding click', doesn't mean that it is a good idea. It is better to step back, plan, and use the advanced resources provided for managing large network. Printer configuration is the perfect illustration of this, and Joseph demonstrates how the use of Group Policy, PowerShell, and Print Management can turn a time-consuming chore into a pleasure.

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  • Resize/Create a New Partition in GParted

    - by Charlie
    So I've been having some trouble recently with Ubuntu and decided it was time to switch to windows. But I have no ntfs partitions on my hard disk and GParted will not let me resize my one large partition (/dev/sda1) so that I can allocate some ntfs space to install windows on. Any help would be greatly appreciated, I've had this problem for quite some time now and it had just become one big headache. Thanks in advance!

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  • Enterprise SEO, A Wasted Opportunity

    Corporates have embraced the net for quite a while now, but search engine marketing is still considered the lowest form of advertisement. Fair enough, its cheaper than your average TV campaign, but much more targeted and measurable. Spending money on ads isn't everything though, SEO (search engine optimisation) should play a dominant role in the search marketing budget as nothing will drive more visitors to your page than a good ranking on Google. However large enterprises seem to skimp when it comes to SEO and misses out on key opportunities at the same time.

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  • SEO For Video - How to Make it Work

    Today, promoting your business on the web is easier than ever, and small businesses have limitless options for creating web sites that not only build credibility with visitors, but also lets users purchase online, communicate interactively, participate in social platforms, use web tools or widgets, play games, or any number of other useful activities using web apps and new features. But of all the web technology available for small business web sites today, one of the most effective is web video.

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  • Online Press Releases Essential For Non-Profits

    An online Press Release has become a powerful tool to convey your message to a large and dispersed target audience. Where advertising serves as a form of direct self-promotion, a Press Release serves the same purpose but in a more subtle and informative manner. A PR for your non-profit should be used judiciously, when there is real newsworthy content to disseminate.

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  • The Importance of SEO in Website Development

    When developing a website one of the most important components of your website design that most people fail to recognize is the SEO component. While many people are aware that search engine optimization can help increase overall traffic generation, most fail to realize just how large of a role SEO plays in website development.

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