uncleflo

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Some cool dude. Higher order of decision making. Absolute.

Registered since September 28th, 2017

Has a total of 3394 bookmarks.

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Rocket Nozzle Flow Analysis on Solidworks - YouTube

https://www.youtube.com/watch?v=aRqsRIf0w0M

Saved by uncleflo on January 18th, 2019.

Rocket Nozzle Flow Analysis on Solidworks, a Youtube movie on how to demonstrate this, using Solidworks. Very educating.

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Waterfall model - Wikipedia

https://en.wikipedia.org/wiki/Waterfall_model

Saved by uncleflo on January 18th, 2019.

The waterfall model is a relatively linear sequential design approach for certain areas of engineering design. In software development, it tends to be among the less iterative and flexible approaches, as progress flows in largely one direction ("downwards" like a waterfall) through the phases of conception, initiation, analysis, design, construction, testing, deployment and maintenance. The waterfall development model originated in the manufacturing and construction industries; where the highly structured physical environments meant that design changes became prohibitively expensive much sooner in the development process. When first adopted for software development, there were no recognized alternatives for knowledge-based creative work.

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How to Test Your Lens | B&H Explora

https://www.bhphotovideo.com/explora/photography/tips-and-solutions/how-to-test-your-lens

Saved by uncleflo on January 6th, 2019.

So, you just bought a shiny, new, and maybe expensive, lens for your camera, and being the savvy consumer, you did your homework. You pored over customer reviews on the B&H Photo website, read online reviews splattered all over the Internet, grabbed a copy of every photo magazine that reviewed the lens, bookmarked dozens of websites, and now have the lens’s MTF curve charts burned into your retinas. Now, your lens is here and it is time to go out shooting. Honestly, not a problem. Your lens should be as good as it can be and, as photographers, we want to take photos. So, stop reading and go out and make some photographs! Still here? OK, let me tell you why you might want to test that lens yourself. The main reason is that even with today's precision computer-controlled manufacturing techniques, there are variations in each and every lens that rolls off an assembly line. This means that some examples will be better than others. Some lenses will be outstanding and others will make you wonder if all of those glowing reviews you read online were completely bogus.

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Lens Tests: A Simple Method

http://www.zen20934.zen.co.uk/photography/LensTests/simplemethod.htm

Saved by uncleflo on January 6th, 2019.

This is a simplified subjective method of testing lenses optical sharpness. This should not be confused with tests for focus accuracy and discrimination in a 3D environment, that is a totally different issue although often confused by the inexperienced. A focus accuracy test is suggested here Focus Test. The advantage over this method, compared to just taking a shot of a garden etc, is elimination of variables such as subject and camera movement, insufficient depth of field, flatness of field and variations in focus location. It uses a nice consistent high contrast subject to make comparisons easy; checking sharpness on general photographic views is not very easy. As the method is subjective, it is worth testing against a known good lens for comparison.

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ISO 12233 Test Chart

https://stephen-westin.com/misc/res-chart.html

Saved by uncleflo on January 6th, 2019.

In 2000, the International Standards Organization adopted ISO Standard 12233: Photography -- Electronic still-picture cameras - Resolution measurements for the measurement of camera resolution. This standard is protected by copyright, but the design of the associated test chart seems not to be protected; its description has been available on the Web in an Excel spreadsheet. I have semi-manually converted this to an Adobe Illustrator file which is displayed here. In 2014 and again in 2017, the ISO revised the standard and the chart below was replaced by several new ones. Those new charts are not available here. In principle, you should be able to print this chart and perform resolution tests on your camera. The reality isn't that simple; there are lots of subtleties having to do with focus distance, quality and contrast of your printer, evenness of illumination, surface reflections, etc.

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ISO 12233 — Resolution and spatial frequency responses | imatest

http://www.imatest.com/solutions/iso-12233/

Saved by uncleflo on January 6th, 2019.

This new standard defines three test charts. The new Imatest eSFR ISO module performs a highly automated analysis of the new low contrast (4:1) Edge SFR chart and is available in Imatest Master and Image Sensor 4.0. This chart does not work with the highly automated Imatest eSFR ISO module, described below. For highly automated measurements (including squares near the corners, color patches, and wedges) we recommend one of the Imatest eSFR ISO charts shown below. These charts are fully compliant with ISO 12233:2017. Supported by the Imatest Star Chart module. Optional automatic region detection is available when used with a star pattern that has registration marks on the sides of the image.

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How to create large dummy file

https://www.windows-commandline.com/how-to-create-large-dummy-file/

Saved by uncleflo on January 3rd, 2019.

A-Z Windows Commands, Batch files, Dos and PowerShell. Fsutil.exe is a built in filesystem tool that is useful to do file system related operations from command line. We can create a file of required size using this tool. The above commands create a 1 MB file dummy.txt within few seconds.  If you want to create 1 GB file you need to change the second command as below.

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Elive 3.0 Stable

https://www.elivecd.org/download/stable/

Saved by uncleflo on November 29th, 2018.

Elive is a non-commercial, cost-free operating system made for the daily use; a much faster, friendlier, and feature-rich replacement of your high cost and ineffective default operating system.Turn that up to 15-year-old equipment into a high-performance machine with a dazzling interface. Entirely customizable to meet your needs while remaining lightweight and beautiful.Elive can be up and running in 2 minutes without the need to install it, choose the language and the desired options to get the maximum performance, or just let Elive auto-detect them for you.Because the user experience is our top priority, we provide a very intuitive experience where anybody can use it, by keeping the interface simple and not over-saturated with options, while providing many automated tools. Elive is based on Debian, so it inherits the stability and reliability that Debian is famous for. The customized Enlightenment desktop is ultra-fast and perfectly stable. You can count on Elive to work day after day without issues. Comes with a full suite of applications, whether for work or for pleasure. It offers everything from a complete office suite, tools, games, and multimedia. You can enjoy watching movies or making your own. Professional video editor, graphic design, media center, or even recover files from formatted disks. Make 3D animations, edit and manipulate audio, image files, and so much more. Elive is intended for everyone from new users to advanced ones, who will find incredibly useful tools hidden inside.

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Heliguy - CAA Approved NQE

https://www.heliguy.com/

Saved by uncleflo on November 27th, 2018.

CAA Approved NQE Heliguy has National Qualified Entity (NQE) approved status from the Civil Aviation Authority. This permits us to carry out unmanned aircraft pilot training at a number of UK locations. Drone pilots who want to undertake commercial work are required to have been trained and tested before they can apply for a Permission for Commercial Operations (PfCO) from the CAA. We’ll guide you through this process and ensure it’s as painless and enjoyable as is possible! We have an FCA-approved consumer credit licence to enable us to broker credit deals on drones, equipment and training. Heliguy’s on-site technical team not only builds custom aircraft and deals with repairs, it’s also equipped to produce bespoke equipment and modifications to UAVs with the aid of 3D printing technology and years of hands-on experience. Our knowledgeable sales team are just a phone call away when you need a quick answer to your query.

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ANSWERED: Time limit on live streaming

https://community.theta360.guide/t/answered-time-limit-on-live-streaming/1658

Saved by uncleflo on October 23rd, 2018.

I read that there is a 25 minute limit on live streaming with the theta v? Why is this? Do you know if it can be changed? I was doing test with both 4K live streaming 2 and spatial audio 3. I don’t know the technical reason for this or if it can be fixed with software in the future. I’ll ask around. Update: I am closing this topic to help other people find the info they are looking for. The answer is that there is no time limit on live streaming. I’ve tested it for more than 2 hours. My test was in an air-conditioned room. We do not know if there will be overheating problems in the future, but we know that there is no technical limit on live-streaming.

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Betfair Historical Data

https://historicdata.betfair.com

Saved by uncleflo on October 23rd, 2018.

The Betfair Historical Data service provides time-stamped Betfair Exchange data for purchase & download to registered Betfair customers. Using this data you can: Access historical Betfair Exchange price & market data; View details of historical market settlements; Custom filter data prior to download; Back test your strategy before going ‘live’; Experiment with new sport/market types; Please see below for an overview of the data packages that are available. For a detailed specification of each package please see the Data Specification. All historical data is provided for personal use only. If you’d like to use the information for commercial purposes then you’ll require a commercial licence. Please contact us directly via Support for further inform.

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Hping

http://www.hping.org/

Saved by uncleflo on October 23rd, 2018.

hping is a command-line oriented TCP/IP packet assembler/analyzer. The interface is inspired to the ping(8) unix command, but hping isn't only able to send ICMP echo requests. It supports TCP, UDP, ICMP and RAW-IP protocols, has a traceroute mode, the ability to send files between a covered channel, and many other features. While hping was mainly used as a security tool in the past, it can be used in many ways by people that don't care about security to test networks and hosts.

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IxLoad - L4-7 performance testing for multiplay services, application delivery platforms, and network security appliances

https://www.ixiacom.com/products/ixload

Saved by uncleflo on October 23rd, 2018.

Measure the quality of experience of real-time, business-critical applications with converged multiplay service emulations. Problem: Endangered quality of experience. In today’s highly competitive landscape, organizations must meet stringent network quality requirements to deliver the best customer experience. However, a widening array of multimedia applications, and an increasing number of users, is making it harder—and more expensive—than ever to validate converged multiplay services and application delivery platforms. Without a way to properly test these services, customer quality of experience is at risk.

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Monetra Developers

https://www.monetra.com/developers

Saved by uncleflo on September 14th, 2018.

The Monetra® Payment Software is designed for seamless integration with a variety of third party applications, including accounting, POS and web-based systems across numerous platforms. For further inquiries not detailed in the documentation, please contact us.

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OWASP Zed Attack Proxy Project

https://www.owasp.org/index.php/OWASP_Zed_Attack_Proxy_Project

Saved by uncleflo on June 22nd, 2018.

The OWASP Zed Attack Proxy (ZAP) is one of the world’s most popular free security tools and is actively maintained by hundreds of international volunteers*. It can help you automatically find security vulnerabilities in your web applications while you are developing and testing your applications. Its also a great tool for experienced pentesters to use for manual security testing.

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Setting up an SSL secured Webserver with CentOS

https://wiki.centos.org/HowTos/Https

Saved by uncleflo on May 30th, 2018.

This guide will explain how to set up a site over https. The tutorial uses a self signed key so will work well for a personal website or testing purposes. This is provided as is so proceed at your own risk and take backups! For an SSL encrypted web server you will need a few things. Depending on your install you may or may not have OpenSSL and mod_ssl, Apache's interface to OpenSSL.

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VividCortex - Application performance starts with your database

https://www.vividcortex.com/

Saved by uncleflo on April 18th, 2018.

Most app performance issues originate in the database, but engineering teams lack visibility into the data tier. VividCortex provides unique insights into database workload and query performance, enabling faster issue resolution. The result is better application performance, reliability, and uptime. This ebook will help you understand key questions that you should pose about your database—and it will show you exactly how you can answer them, quickly and safely, with VividCortex.

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kryll.io - Automated Crypto trading strategies made simple

https://kryll.io/

Saved by uncleflo on April 7th, 2018.

The first intuitive platform for defining Crypto trading strategies: Defining strategies made simple. With our Wysiwyt™ (What You See Is What You Trade) flow-based technology you can intuitively create your own automated trading strategy. Powerful blocks. We offer simple logical operators, markets indicators, value triggers, enhanced technical analysis, media opinion mining and deep-learning predictions; all this will help build your flows and create automated winning strategies. Advanced testing. Benchmark your strategies throught real-time sandboxes and massive Kryll.io back-testing capabilities (250 pairs, 1 second frequency, 6 months data history…).

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SVG Gradient Background Maker

https://testdrive-archive.azurewebsites.net/graphics/svggradientbackgroundmaker/default.html

Saved by uncleflo on April 7th, 2018.

Use this demo to create SVG-based CSS background-image gradients. The CSS markup works in browsers which support SVG as a background-image including Internet Explorer 9, Chrome, Safari, and Opera.

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Running Docker in Production: three use cases and the good, the bad and the ugly

http://blog.kontena.io/docker-in-production-good-bad-ugly/

Saved by uncleflo on December 27th, 2017.

At the first Docker Helsinki Meetup for 2017 on January 17th, we heard about three interesting use cases of the ins and outs of how Docker is used in production at Solita, Zalando and Pipedrive. We also heard about the good, the bad and the ugly of running Docker in production. Solita's Use Case: Firstly, Heikki Simperi from Solita explained how his company uses Docker to handle the various apps and systems associated with their management of the Finnish National Railway Service (VR), as well as the problems they've run into when using Docker. Solita runs a variety of their own apps on Docker, including a navigator for train drivers, a construction notification system and a traffic controller app. Heikki reiterated that it's important for the downtime to be minimal when the apps involved are ones responsible for railway management and that "anything over a 3-5 min downtime causes delays for trains, but nobody dies". Most of the issues they experienced using Docker were related to building an image, having a private repository, removing or starting up a container, or a bug inside an app. Overall, the running usage of the Docker platform has been stable, with "zero downtime". The problems have lessened after upgrading to each new Docker version and they are experiencing less and less problems as time goes on. They are looking forward to the release of Docker 1.12 on a stable channel from Red Hat.

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Java Tools for building and testing - Enterprise-OSGi-in-Action

http://what-when-how.com/Tutorial/topic-647vgevdm3/Enterprise-OSGi-in-Action-242.html

Saved by uncleflo on December 27th, 2017.

Karaf has a lot of support for Apache Aries, which makes it a convenient environment for developing and testing enterprise OSG i applications. So well integrated is Karaf with Aries, Karaf comes with Blueprint support by default. Even better, if you list the OSGi bundles using the osgi:list , there's a special column that shows each bundle's Blueprint status.

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How to Install Node.js® and NPM on Windows

http://blog.teamtreehouse.com/install-node-js-npm-windows

Saved by uncleflo on December 27th, 2017.

JavaScript is quickly becoming the go-to language for web developers. Front-end web developers use JavaScript to add user interface enhancements, add interactivity, and talk to back-end web services using AJAX. Web developers who work on the server-side are also flocking to JavaScript because of the efficiencies and speed offered by JavaScript’s event-driven, non-blocking nature. In fact, concentrating on JavaScript as your language of choice offers the opportunity to master a single language while still being able to develop “full-stack” web applications. The key to this server-side JavaScript revolution is Node.js® — a version of Chrome’s V8 JavaScript runtime engine — which makes it possible to run JavaScript on the server-side. Node.js is also used for developing desktop applications and for deploying tools that make developing web sites simpler. For example, by installing Node.js® on your desktop machine, you can quickly convert CoffeeScript to JavaScript, SASS to CSS, and shrink the size of your HTML, JavaScript and graphic files. Using NPM — a tool that makes installing and managing Node modules — it’s quite easy to add many useful tools to your web development toolkit. In a previous article, I wrote about how to install Node.js® and, it’s companion, NPM on a Mac. Fortunately, for Windows users, the Node.js® installation process is a lot easier than how I recommend installing Node.js® on a Mac.

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Add N Edit Cookies

https://addons.mozilla.org/en-US/firefox/addon/add-n-edit-cookies/

Saved by uncleflo on June 30th, 2017.

Cookie Editor that allows you add and edit "session" and saved cookies.

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How To Use Netcat to Establish and Test TCP and UDP Connections on a VPS

https://www.digitalocean.com/community/tutorials/how-to-use-netcat-to-establish-and-test-tcp-and-udp-connections-on-a-vps

Saved by uncleflo on June 27th, 2017.

Linux is known for having a great number of mature, useful command line utilities available out of the box in most distributions. Skilled system administrators can do much of their work using the built-in tools without having to install additional software. In this guide, we will discuss how to use the netcat utility. Often referred to as a Swiss army knife of networking tools, this versatile command can assist you in monitoring, testing, and sending data across network connections. We will be exploring this on an Ubuntu 12.04 VPS, but netcat should be available on almost any modern Linux distribution. Ubuntu ships with the BSD variant of netcat, and this is what we will be using in this guide. Other versions may operate differently or provide other options.

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Damn Small Linux

http://www.damnsmalllinux.org/download.html

Saved by uncleflo on February 24th, 2017.

Damn Small Linux is a very versatile 50MB mini desktop oriented Linux distribution. Damn Small is small enough and smart enough to do the following things: Boot from a business card CD as a live linux distribution (LiveCD), Boot from a USB pen drive, Boot from within a host operating system (that's right, it can run *inside* Windows), Run very nicely from an IDE Compact Flash drive via a method we call "frugal install", Transform into a Debian OS with a traditional hard drive install, Run light enough to power a 486DX with 16MB of Ram, Run fully in RAM with as little as 128MB (you will be amazed at how fast your computer can be!), Modularly grow -- DSL is highly extendable without the need to customize

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