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anonymous

Learning CSS - 1 views

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    This is one user's CSS Bible. It has a lot of meat and very little fat (by the looks of it). Highly recommended "Starting with HTML + CSS teaches how to create a first style sheet. For a quick intro, try chapter 2 of Lie & Bos or Dave Raggett's intro to CSS. Or see examples of styling XML and CSS tips & tricks. W3C's Core Styles are simple style sheets ready for use. Two different self-study courses (under development) are CSS for beginners and Web Standards Curriculum. Also on this page: English and non-English articles, discussion fora, books, and secondary resources."
anonymous

Speed Up Windows 7 - Ultimate Tweaks For a Blazing Fast Windows 7 - 0 views

  • Disabling the Search Indexing Feature in Windows 7
  • Right Click the “Computer” Icon in the desktop and select “Manage”. Click “Services and Applications” in the “Computer Management” window. Click on “Services”. You’d see a lot of services being listed inside the window. Find “Windows Search” from the list. Right Click on “Windows Search” from the list and choose “Properties”. The “Windows Search Properties Window” will open up. From “Startup type” click on the drop down menu and choose “Disabled”.
  • Click “Apply” then “OK” and that’s it. The Windows 7 Search Indexing Feature is now disabled.
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  • Disable the Aero Theme on Windows 7
  • You may also Apply a Standard or Basic theme from the previous window. The Standard Windows 7 theme is more preferred as its gives a neutral look than the classy windows old theme.
  • Disabling the Unwanted Visual Effects in Windows 7 to Speed Up more
  • Right click on ” Computer” and select “Properties” from the right click menu. Click on ” Advanced System Settings ” from the left pane to open up the ” System Properties ” window. Select the “Advanced” tab from it. Then Under ” Performance ” click ” Settings “. Choose ” Custom: ” Options From it. Now un tick all the options (Choose “Adjust for best performance“) and select only the last four options (actually three are preferable  you may un- tick the second option out of the last four). Take a look at the screen shot below.
  • List of services in Windows 7 that can be safely set to manual / disabled
  • Turn off Unused Windows 7 Features
  • Open up ” Programs and Features ” from Control Panel. Click the ” Turn Windows features on or off ” from the left pane. Now uncheck all the Feature that you don’t use in Windows 7 and restart the system for the changes to take effect.
  • Speeding Up, Tweaking and Optimizing Your SSD
  • If you’ve got a new ssd for your system, then you’d definitely consider checking out this guide which explains 9 tweaks to properly speed up, optimize your ssd and prolong the life of your ssd, while getting the best performance from it.
  • Disable the Windows 7 Sidebar (The Gadgets)
  • Right click on the sidebar and choose ” Properties “. On the properties windows untick the check box showing ” Start sidebar when Windows Starts “ From now on windows sidebar won’t start when windows 7 start up.
  • Disable the Aero Peek and Aero Snap features in Windows 7
  • Aero Snap will help you to maximize, minimize and resize the windows just by dragging and dropping it into the screen corners. I dont advice to turn it off as the Aero Snap feature really helps to speed up working with windows by arranging them side by side. But, if you are not a regular user of the same, you may proceed by turning of aero snap in windows 7. Open the Windows 7 ” Control Panel ” and double-click on ” Ease of Access Center ” icon. Now click on the ” Make it easier to focus on tasks ” seen at the bottom in there Now untick the check box saying ” Prevent windows from being automatically arranged when moved to the edge of the screen ” . Right click on the Windows 7 taskbar and select ” Properties “. Now untick the ” Use Aero Peek to preview the desktop ” option from there. That will now disable the Aero Snap in Windows 7.
  • Now To Disable the Aero Peek feature in Windows 7
  • The Aero Peek feature in Windows 7 helps you to peek through all open windows by hiding all other windows and showing only the outlines of all windows. Aero Peek is similar to the ” Show Desktop ” Feature in XP and Vista. If you have followed step 3 then Aero Peek will be automatically disabled. If not, Right Click the Taskbar and choose Properties. Un-select the ”Use Aero Peek to preview the desktop” option. The aero peek feature will now be disabled in windows 7.
  • Change the Power Plan To Maximum Performance
  • Double click the ” Power Options ” in the Control panel. Click the down arrow showing ” Show Additional Plans ” to see the ” High Performance ” power plan.
  • Now just activate the ” High Performance ” plan and that’s it. You may go for the advanced settings for further tweaking if you want.
  • Disable the Thumbnail Preview Feature to speed up File browsing in Windows 7
  • For disabling thumbnails in Windows 7, Double Click on ” Computer ” >click on the “Organize” drop-down menu and select the “Folder and Search options” Under ‘Files and Folders’ section, go to the “View” tab and tick the check box showing “Always show icons, never thumbnails” checkbox.
  • Turn OFF Windows 7 Screen Saver and Wallpaper
  • To Disable The Screen Saver and Wallpaper in Windows 7, Right click on desktop and choose “Personalize”. Click the Screen Saver link ” From the Screen Saver drop down menu, Set it to “None” and click “Apply” and then “OK”. Now click on “Desktop Background” link. From the “Location” drop down menu select “Solid Colors” and pick one color and click “OK”.
  • Disable Unwanted Start Up Items and Speed Up Windows 7 Start Up
  • Type ” msconfig ” in the “RUN” option from start menu press [Enter] to open up the System Configuration Utility. Now navigate to the “StartUp” tab. Untick the Entries which are not needed
  • Disable Unwanted System Sounds in Windows 7
  • To disable the system sounds in Windows 7, Type mmsys.cpl in RUN From the Windows 7 Startmenu search box and press [Enter]. Navigate to the “Sounds” tab. Now from under “Sound Scheme:” select “No Sounds” > Click “Apply” > “OK”.
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    "Windows 7 is Engineered for speed. Special attention has been given by the Windows team for making Windows 7 faster than the previous operating systems. Windows 7 is much faster than Windows Vista, but even then most of us don't get satisfied with it. There are many who still have their old PC. Installing Windows 7 on them wont be as soothing as they would work with XP and Even with latest hardware's installed some users are still avaricious  for more performance. We could optimize Windows 7 to the maximum possible extent to squeeze out extra performance from it. So, for all the extra performance lovers, here is the Ultimate Guide To Speed Up Windows 7."
anonymous

Speed Up SSD & Optimize For Performance with 9 Quality Tweaks - 0 views

  • 1) Enable Write Caching in Windows 7
  • This tweak would enable the write caching on your SSD which helps to speed up SSD by a small margin. This tweak would force windows to cache the write commands sent to the SSD, to be stored in the memory which is many times faster and thus would result in a much faster operation.
  • To do this navigate to, Computer > Properties > Device Manager >Disk Drive Now, right click and select Properties of your SSD and click on policies tab and just select the Enable write caching in Windows option, Click Apply > OK and you’re done.
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  • 2) Speed Up SSD by Using RAM Cache
  • Begin the process by downloading Fancy Cache (~2MB) software. After installation and starting up the program, the software interface would list out the storage mediums connected to your pc. Select your SSD from the list and configure a cache size for it (Refer the image). The cache size may be set to suit your needs. We’ve allocated currently 3192 MB of RAM as the cache and the defer caching has been also set to enabled. After setting the cache size for your SSD and related options on fancy cache, click Start Caching and you’re ready with the caching setup for your SSD.
  • Optimizing and Maintaining Your SSD
  • The TRIM Command The very first step after setting up an SSD is to enable the TRIM Command in Windows. Windows 8 has the TRIM command already enabled if you are using an SSD. It is important to have the TRIM command enabled on your system as it helps to maintain the SSD’s life by optimizing the garbage collection in windows.
  • 3) Enabling TRIM Command to Optimize SSD From the Start Menu, type CMD in the search box. Right click the command prompt icon and choose Run as Administrator. Now type fsutil behavior query disabledeletenotify and press Enter. If its shows you disabledeletenotify = 0, the TRIM command is enabled in windows and you don’t have to make any modifications. If not, it would display, disabledeletenotify = 1. If TRIM is not enabled, type fsutil behavior set disabledeletenotify 0 The TRIM Command would now be set to enabled.
  • 4) Should You enable hibernation while using an SSD in Windows ?
  • Drive Defragmentation in Windows 7
  • Drive defragmentation helps in organizing the fragmented data and helps in improving the performance of a hard disk. But drive defragmentation doesn’t speed up SSD, as these drives doesn’t contain any rotating parts and defragmenting a drive would involve the transfer of data i.e. more read/write cycles which actually shortens the life span of the SSD. So, its always good to disable drive defragmentation in windows.
  • 6) Turn Off Super fetch, Prefetch in Windows
  • So its better to disable them if you have 4GB or less memory. If you have plenty of RAM installed, enabling them might give an iota of boost and would speed up SSD performance.
  • Bring up the Registry Editor in Windows by Typing regedit on RUN Window (WIN + R) and pressing Enter. Now navigate to “HKEY_LOCAL_MACHINESYSTEMCurrentControlSetControlSessionManagerMemory ManagementPrefetchParameters“ You’ll see Enable Prefetcher and Enable Superfetch options being list out on the right window pane. Double click each and set the value from 3 to 0. Now restart your system for the changes to be enabled.
  • SSDs are speedier than hard drives and have an access time of 0.1 milli second. Drive indexing results in increasing the number of file write operations doesn’t really speed up SSD and its better to have it turned off. Open My Computer and just right Click Your SSD and choose properties. Just untick the Allow files on this drive to have contents indexed in addition to file properties option. You’ll be prompted with warnings just after clicking Apply. Proceed by pressing Ignore All and it would show you a processing window and would take a few minutes for the changes to be applied.
  • 9) Disabling Drive Indexing to Optimize SSD
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    "Users who crave for more performance out of their system would definitely consider investing a pretty decent ssd to speed up their PC. Unlike hard drives SSD's work in an different manner. Users who upgrade from hard drives to SSD's often get confounded with doubts whether they need to do the required maintenance which they might have been doing with the hard drives, to speed up ssd and optimize its performance."
anonymous

How Basecamp Next got to be so damn fast without using much client-side UI by David of ... - 0 views

  • #1: Stacker – an advanced pushState-based engine for sheets
  • The Stacker engine reduces HTTP requests on a per-page basis to a minimum by keeping the layout the same between requests.
  • This means that only the very first request spends time downloading CSS, JavaScript, and image sprites. Every subsequent request will only trigger a single HTTP request to get the HTML that changed and whatever additional images needed.
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  • Now Stacker is purposely built for the sheet-based UI that we have. It knows about sheet nesting, how to break out of a sheet chain, and more.
  • #2: Caching TO THE MAX
  • Stacker can only make things appear so fast. If actions still take 500ms to render, it’s not going to have that ultra snappy feel that Basecamp Next does. To get that sensation, your requests need to take less than 100ms. Once our caches are warm, many of our requests take less than 50ms and some even less than 20ms.
  • The only way we can get complex pages to take less than 50ms is to make liberal use of caching.
  • Every stand-alone piece of content is cached in Basecamp Next.
  • This is illustrated in the picture above. If I change todo #45, I’ll have to bust the cache for the todo, the cache for the list, the cache for all todolists, and the cache for the page itself. That sounds terrible on the surface until you realize that everything else is cached as well and can be reused.
  • Thou shall share a cache between pages
  • To improve the likelihood that you’re always going to hit a warm cache, we’re reusing the cached pieces all over the place. There’s one canonical template for each piece of data and we reuse that template in every spot that piece of data could appear.
  • Now this is often quite easy. A todo looks the same regardless of where it appears. Here’s the same todo appearing in three different pages all being pulled from the same cache:
  • Thou shall share a cache between people
  • This is where a sprinkle of JavaScript comes handy. Instead of embedding the logic in the generation of the template, you decorate it after the fact with JavaScript. The block below shows how that happens.
  • It’s a cached list of possible recipients of a new message on a given project, but my name is not in it, even though it’s in the cache. That’s because each checkbox is decorated with a data-subscriber-id HTML attribute that corresponds to their user id. The JavaScript reads a cookie that contains the current user’s id, finds the element with a matching data-subscriber-id, and removes it from the DOM. Now all users can share the same user list for notification without seeing their own name on the list.
  • Combining it all and sprinkling HTTP caching and infinite pages on top
  • None of these techniques in isolation are enough to produce the super snappy page loads we’ve achieved with Basecamp Next, but in combination they get there.
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    "Speed is one of those core competitive advantages that have long-term staying power. As Jeff Bezos would say, nobody is going to wake up 10 years from now and wish their application was slower. Investments in speed are going to pay dividends forever. Now for the secret sauce. Basecamp is so blazingly fast for two reasons:"
anonymous

Freakonomics: What Went Wrong? - 0 views

  • Oster’s work stirred debate for a few years in the epidemiological literature, but eventually she admitted that the subject-matter experts had been right all along. One of Das Gupta’s many convincing counterpoints was a graph showing that in Taiwan, the ratio of boys to girls was near the natural rate for first and second babies (106:100) but not for third babies (112:100); this pattern held up with or without hepatitis B. In a follow-up blog post, Levitt applauded Oster for bravery in admitting her mistake, but he never credited Das Gupta for her superior work. Our point is not that Das Gupta had to be right and Oster wrong, but that Levitt and Dubner, in their celebration of economics and economists, suspended their critical thinking.
  • In SuperFreakonomics, Levitt and Dubner use a back-of-the-envelope calculation to make the contrarian claim that driving drunk is safer than walking drunk, an oversimplified argument that was picked apart by bloggers. The problem with this argument, and others like it, lies in the assumption that the driver and the walker are the same type of person, making the same kinds of choices, except for their choice of transportation.
  • Such all-else-equal thinking is a common statistical fallacy. In fact, driver and walker are likely to differ in many ways other than their mode of travel. What seem like natural calculations are stymied by the impracticality, in real life, of changing one variable while leaving all other variables constant.
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  • This unavoidable tradeoff between false positive and false negative errors is a well-known property of all statistical-prediction applications. Circling back to check all the factors involved in the problem might have helped the authors avoid this mistake.
  • How could an experienced journalist and a widely respected researcher slip up in so many ways? Some possible answers to this question offer insights for the would-be pop-statistics writer.
  • Leave friendship at the door: We attribute many of these errors to the structure of the authors’ collaboration, which, from what we can tell, relies on an informal social network that has many potential failure points.
  • Don’t sell yourself short: Perhaps Levitt’s admirable modesty—he has repeatedly attributed his success to luck and hard work rather than genius—has led him astray. If he feels he is surrounded by economists more exceptional and brilliant than he is, he may let their assertions stand without challenge.
  • Maintain checks and balances: A solid collaboration requires each side to check and balance the other side. Although there’s no way we can be sure, perhaps, in some of the cases described above, there was a breakdown in the division of labor when it came to investigating technical points.
  • Take your time: Success comes at a cost: The constraints of producing continuous content for a blog or website and meeting publisher’s deadlines may have adverse effects on accuracy.
  • Be clear about where you’re coming from: Levitt’s publishers, along with Dubner, characterize him as a “rogue economist.”
  • Use latitude responsibly: When a statistician criticizes a claim on technical grounds, he or she is declaring not that the original finding is wrong but that it has not been convincingly proven. Researchers—even economists endorsed by Steven Levitt—can make mistakes. It may be okay to overlook the occasional mistake in the pursuit of the larger goal of understanding the world. But once one accepts this lower standard—science as plausible stories or data-supported reasoning, rather than the more carefully tested demonstrations that are characteristic of Levitt’s peer-reviewed research articles—one really has to take extra care, consider all sides of an issue, and look out for false positive results.
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    In our analysis of the Freakonomics approach, we encountered a range of avoidable mistakes, from back-of-the-envelope analyses gone wrong to unexamined assumptions to an uncritical reliance on the work of Levitt's friends and colleagues. This turns accessibility on its head: Readers must work to discern which conclusions are fully quantitative, which are somewhat data driven and which are purely speculative.
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