Supervisory Control and Data Acquisition - Wikipdia Un article de Wikipédia, l'encyclopédie libre. Un système de contrôle et d'acquisition de données (anglais : Supervisory Control And Data Acquisition, sigle : SCADA) est un système de télégestion à grande échelle permettant de traiter en temps réel un grand nombre de télémesures et de contrôler à distance des installations techniques[1]. C'est une technologie industrielle dans le domaine de l'instrumentation, dont les implémentations peuvent être considérées comme des frameworks d'instrumentation incluant une couche de type middleware. Contextes[modifier | modifier le code] On trouve par exemple des systèmes SCADA dans les contextes suivants : surveillance de processus industrielstransport de produits chimiquessystèmes municipaux d'approvisionnement en eaucommande de la production d'énergie électriquedistribution électriquecanalisations de gaz et de pétroleréseaux de chaleurrecherche et études scientifiques et industrielles Historique[modifier | modifier le code] Single SCADA HMI Example[2]
Understanding the CSS Clip Property Learn about the underused and often misunderstood CSS clip property and understand how to apply it for some nifty effects. Hi guys! First of all let me wish a belated happy new year to all of you. Today we are going to do something different: dig deep into one single CSS property. I’m pretty sure some of you don’t even know there is a CSS property called clip since it’s probably the less used property in the world. The clip property aims at defining what portion of an element you want to show. Syntax Let’s get started straight away with the syntax of the clip property which is not only a little bit weird but also probably difficult to understand at first glance. First thing you should note: the clip property only works on elements with position: absolute or position: fixed. To be honest, I don’t really know why it is like that. As I said on Twitter a few days ago — and as you might think — this is a huge downside to the clip property. The clip property accepts only three different values:
Writing efficient CSS selectors 17 September, 2011 Efficient CSS is not a new topic, nor one that I really need to cover, but it’s something I’m really interested in and have been keeping an eye on more and more since working at Sky. A lot of people forget, or simply don’t realise, that CSS can be both performant and non-performant. This can be easily forgiven however when you realise just how little you can, err, realise, non-performant CSS. These rules only really apply to high performance websites where speed is a feature, and 1000s of DOM elements can appear on any given page. CSS selectors CSS selectors will not be new to most of us, the more basic selectors are type (e.g. div), ID (e.g. More uncommon ones include basic pseudo-classes (e.g. Selectors have an inherent efficiency, and to quote Steve Souders, the order of more to less efficient CSS selectors goes thus: ID, e.g. Quoted from Even Faster Websites by Steve Souders The difference in speed between an ID and a class is almost totally irrelevant. N.B. #content {}
Thesis 2.0 Launch Party Video Tutorials – What’s New In The Thesis Theme If you are looking for the Thesis 2.1 launch party videos you can find them Here On Monday, October 1st Thesis 2.0 was released to the general public and to honor the occasion we had a launch party. The videos below represent parts of the Launch Party and the What’s New in Thesis 2.0 videos. For seminars we’ve created since the launch party, select this link to our Thesis Theme 2 Seminars. Launch Party Part 1 – Introduction Tutorial Thesis Theme 2.0 is going completely change the way you design WordPress websites. You can have different templates for EVERYTHING – that’s right – the Thesis theme now allows you to have custom templates for any post, page custom post type, category, tag or custom taxonomy. What’s New in Thesis 2.0 Part 1 – The New Thesis Interface Tutorial The new Thesis Theme 2.0 Interface consists of 2 main parts: the Thesis Theme Settings Page and the revolutionary new Skin Editor. What’s New in Thesis 2.0 Part 2 – Parts of a Thesis Site Tutorial I love a good Feature Box.
Le projet autoblog Pourquoi Les gouvernements, organisations et entreprises mettent de plus en plus de pression légale, morale et financière sur les citoyens, entravant leur liberté d'expression. Des sites connus comme Wikileaks bénéficient facilement de l'effet Streisand, mais c'est rarement le cas des sites plus petits. Comment VroumVroumBlog est un autoblog. Vous pouvez aider Vous pouvez aider les webmasters à contrer la censure. Autoblogs, unissez-vous ! Qui suis-je ? Je suis le webmaster de sebsauvage.net, un site perso. Je veux aider en retour. Le concept d'autoblog est une idée original de Mitsukarenai (aka Arkados), le webmaster de suumitsu.eu La version initiale de VroumVroumBlog a été réalisée par un anonyme. D'autres questions ? Lisez la FAQ.
CSS3 Lightbox Today we want to show you how to create a neat lightbox effect using only CSS. The idea is to have some thumbnails that are clickable, and once clicked, the respective large image is shown. Using CSS transitions and animations, we can make the large image appear in a fancy way. View demo Download source With the help of the pseudo-class :target, we will be able to show the lightbox images and navigate through them. The beautiful images are by Joanna Kustra and they are licensed under the Attribution-NonCommercial 3.0 Unported Creative Commons License. Please note that this will only work with browsers that support the :target pseudo class. Let’s do it! The Markup We want to show a set of thumbnails, each one having a title that will appear on hover. The anchor for the thumbnail will point to the element with the id image-1 which is the division with the class lb-overlay. Note that we only use a navigation in the last demo. Let’s beautify this naked markup. The CSS And that’s all the style! Demos
Building Stripe's API I just got back from New York, where I gave my first conference talk ever at the API Strategy and Practice conference. Pretty exciting! I thought it would be interesting to talk about Stripe's API, particularly lessons learned and what kind things we did to try to make using the API as easy as possible. I've included the slides below, but most of the content isn't on the slides so I'll try to cover some of the highlights below. As a disclaimer, we definitely don't know everything. Highlights Make it easy to get started This sounds like a no-brainer, but the best way to get people to try out your API is to make it really easy to get started. We do things like including passable code snippets throughout our site and documentation. All of our documentation code snippets are similarly easy to copy and paste—we try to embed as much information as possible (API keys, actual object IDs from your account) so you don't have to. Language-specific libraries and documentation Webhooks Stripe Connect Or,:
The Ultimate Guide to Golden Ratio Typography Right now, there’s a mathematical symphony happening on your website. Every single one of your readers is subconsciously aware of this symphony, and more important, they are all pre-programmed to respond to it in a particular way. The question is this: Is your site’s symphony pleasing and inviting to your readers, or does it turn them off and make it harder to communicate with them? The Mathematical Symphony of Typography As it turns out, this symphony is not unique to websites. At first glance, you might think that typography and math have nothing to do with one another. But the truth is, typography is a combination of artistic letterforms and mathematical proportions, an exquisite marriage of form and function. When the mathematical proportions of your typography are harmonious, your site—and your content, specifically—look appealing to readers. The bottom line is this: So how can you tweak the proportions of your typography to create a beautiful mathematical symphony? Figure 1. Figure 2.
.: OclHashcat-plus v0.06 adds WPA/WPA2 cracking using Aircrack-ng | Download oclHashcat-plus v0.06 | Jano Web | JanoWeb.Net News oclHashcat-plus adds support to WPA/WPA2 GPU-cracking using Aircrack-ng! OclHashcat-plus is the GPU accelerated version of Hashcat password cracker. OclHashcat-plus v0.06 is able to use up to 16 GPUs and is available in two versions: OpenCL (oclHashcat) and CUDA (cudaHashcat) and now also implement the WPA/WPA2 cracking using Aircrack-ng capture file. This new version was faster than every other WPA cracker in every configuration tested. Especially owners of AMD cards and owners of multi GPU systems will see a neat improvement. Here are the main features of OclHashcat-plus v0.06: Multi-GPU (up to 16 gpus) Worlds fastest md5crypt, phpass, mscash2 and WPA/WPA2 cracker Multi-Hash (up to 24 million hashes) Multi-OS (Linux and Windows native binaries) Multi-Platform (OpenCL and CUDA support) Multi-Algo (MD4, MD5, SHA1, DCC, NTLM, MySQL, WPA/WPA2, etc.. etc..) Download oclHashcat-plus v0.06 from official Website Download oclhashcat-plus Online cap2hccap file converter Code: cd ~/ Enjoy, Jano
Sliding Image Panels with CSS3 Today we'll show you how to create some neat sliding image panels with CSS only. The idea is to use background images for the panels and animate them when clicking on a label. We'll use radio buttons with labels and target the respective panels with the general sibling selector. View demo Download source Today we’ll show you how to create some neat sliding image panels with CSS only. The beautiful images are by Joanna Kustra and they are licensed under the Attribution-NonCommercial 3.0 Unported Creative Commons License. You might as well be interested in Filter Functionality with CSS3 where we have used a similar technique for filtering elements based on their type. Please note: the result of this tutorial will only work as intended in browsers that support CSS transitions and animations. The Markup The HTML will consist of three major parts: the radio buttons and the labels, the container with the panels and their “slices” for each image, and the titles. Let’s style this baby. The CSS Demos
Load Balancing without Load Balancers CloudFlare had an hour-long outage this last weekend. Thankfully, outages like this have been a relatively rare occurance for our service. This is in spite of hundreds of thousands of customers, the enormous volume of legitimate traffic they generate, and the barrage of large denial of service attacks we are constantly mitigating on their behalf. Failure Isn't an Option, It's a Fact CloudFlare's architecture starts with an assumption: failure is going to happen. Network:CloudFlare's 23 data centers (internally we refer to them as PoPs) are connected to the rest of the world via multiple providers. Those are the four components you'll find in the racks that we run in locations around the world. Anycast Is Your Friend For most of the Internet, IP addressess correspond to a single device connected to the public Internet. There are four major routing schemes: Unicast, Multicast, Broadcast, and Anycast. Unicast and Anycast are one-to-one routing schemes. Anycast at the WAN Anycast in the LAN