uncleflo
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Research meets industry: A mine planning methodology for space | FNR – Luxembourg National Research Fund
Saved by uncleflo on September 4th, 2022.
When we wrote about Miguel Olivares Mendez in the 2017 edition of Spotlight on Young Researchers, the researcher was working on an FNR JUMP project, focussing on developing algorithms for autonomous drones. The robotics scientist has continued to build his research career in Luxembourg – 5 years later, Miguel is a Professor leading a research group with a focus on space robotics. Luxembourg start-up LuxAI, with their socially assistive robot QTrobot, has been making waves on an international level since it was created. The FNR has supported the project from its inception through the development of a prototype, helping bridge the gap between lab and commercialisation. We speak to LuxAI founders Dr Pouyan Ziafati and Dr Aida Nazarikhorram about the LuxAI journey so far; how QTrobot came to be and how parents can now have a QTrobot at home.
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Realtime mining hardware profitability | ASIC Miner Value
Saved by uncleflo on February 13th, 2022.
Live income estimation of all known ASIC miners, updated every minute. Profits calculated over 200+ coins and 25+ algorithms. All data provided on this website is for informational purposes only, based on profit calculations and analysis of community feedbacks. Any external link is out of our control.Cryptocurrency mining is a high risk investment, we are not responsible for any financial loss, invest at your own risk!
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Learn Pro Audio Online with Audio Masterclass
Saved by uncleflo on January 16th, 2022.
The Audio Masterclass Music Production and Sound Engineering Course is a fully-tutored, practical online course. We'll help you learn how to get the best from your home recording studio. We'll listen to your work, help you resolve any problems, and take you all the way to a commercial release standard of production. Select microphones according to their method of operation - dynamic, capacitor or ribbon. Select capacitor microphones according to their construction and gain-stage element - small-diaphragm or large-diaphragm; FET transistor or vacuum tube. Select microphones according to their polar pattern - omnidirectional, cardioid, hypercardioid or figure-of-eight.
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Intl - JavaScript | MDN
Saved by uncleflo on May 11th, 2021.
The Intl object is the namespace for the ECMAScript Internationalization API, which provides language sensitive string comparison, number formatting, and date and time formatting. The Intl object provides access to several constructors as well as functionality common to the internationalization constructors and other language sensitive functions. The internationalization constructors as well as several language sensitive methods of other constructors (listed under See also) use a common pattern for identifying locales and determining the one they will actually use: they all accept locales and options arguments, and negotiate the requested locale(s) against the locales they support using an algorithm specified in the options.localeMatcher property. The locales argument is used to determine the locale used in a given operation. The JavaScript implementation examines locales, and then computes a locale it understands that comes closest to satisfying the expressed preference.
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JSON Web Token Introduction - jwt.io
Saved by uncleflo on April 10th, 2021.
JSON Web Token (JWT) is an open standard (RFC 7519) that defines a compact and self-contained way for securely transmitting information between parties as a JSON object. This information can be verified and trusted because it is digitally signed. JWTs can be signed using a secret (with the HMAC algorithm) or a public/private key pair using RSA or ECDSA. Although JWTs can be encrypted to also provide secrecy between parties, we will focus on signed tokens. Signed tokens can verify the integrity of the claims contained within it, while encrypted tokens hide those claims from other parties. When tokens are signed using public/private key pairs, the signature also certifies that only the party holding the private key is the one that signed it.
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Sensor Fusion Algorithms For Autonomous Driving: Part 1 The Kalman filter and Extended Kalman
Saved by uncleflo on July 24th, 2019.
Tracking of stationary and moving objects is a critical function of Autonomous driving technologies. Signals from several sensors, including camera, radar and lidar (Light Detection and Ranging device based on pulsed laser) sensors are combined to estimate the position, veloctiy, trajectory and class of objects i.e. other vehicles and pedestrians. A good introduction to this topic can be found at: http://www.onenewspage.com/video/20161006/5695999/Mercedes-Benz-presents-the-Sensor-Fusion-at-2016.htm
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How TF-IDF algorithm determines keyword importance - arbitrue Blog
Saved by uncleflo on December 23rd, 2018.
There are many tools in the developer’s toolbox when it comes to automatic data extraction. A good example is TF-IDF algorithm (Term Frequency – Inverse Document Frequency) which helps the system understand the importance of keywords extracted using OCR. Here’s how TF-IDF can be used for invoice and receipt recognition. In this article we focus on other techniques in order to make this text file “understandable” to a computer. For this purpose, we must delve into the world of NLP or Natural Language Processing. We will focus mainly on how we can transform our file of raw text into a format that will easily be understandable by our algorithm. In a nutshell, TF-IDF is a technique for understanding how important a word is in a document which is often used as a weighting factor for numerous use cases. TF-IDF takes under consideration how frequent a word appears in a single document in relation to how frequent that word is in general. Search engines can use TF-IDF to determine which results are the most relevant for a search query.
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dgrtwo/tidy-text-mining - Github
Saved by uncleflo on December 23rd, 2018.
This is the repo for the book Text Mining with R: A Tidy Approach, by Julia Silge and David Robinson. Please note that this work is written under a Contributor Code of Conduct and released under a CC-BY-NC-SA license. By participating in this project (for example, by submitting a pull request with suggestions or edits) you agree to abide by its terms.
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Forex, Commodities, Indices And Crypto In Bitcoin.
Saved by uncleflo on February 16th, 2018.
Instant account setup, start live trading in minutes! Free practice account and 500:1 Leverage. Trade the Global Markets with the freedom of Bitcoin. Access powerful financial tools , instutional liquidity and infrastructure Evolve Markets takes FOREX trading into the next generation utilizing the Bitcoin Blockchain, Metatrader 4 and tier 4 institutional grade infrastructure. Access our MetaTrader trading platform via web, desktop and mobile from anywhere in the world. MetaTrader 4 offers the leading trading and analytical technologies available to traders today. Its flexible trading system offers advanced tools of technical analysis, mobile trading, algorithmic trading and much more.
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Password security in modern PHP
Saved by uncleflo on December 27th, 2017.
Discover how PHP 5.5 enables more-secure password handling. PHP, from the beginning, was a programming language made for building websites. That idea is in PHP's core far deeper than in any other programming language — perhaps one reason why PHP became and remains so popular for building web applications. But when PHP was first crafted in the mid-1990s, the term web application didn't even exist yet. Password protection, then, wasn't one of the features that the PHP creators devoted resources to. After all, you didn't need to worry about passwords when you used PHP just to put a site-visit counter or a date-modified stamp on your web page. But 20 years have passed, and now it's almost unthinkable to create a web application that doesn't involve password-protected user accounts. It's of the utmost importance that PHP programmers safeguard account passwords by using the latest and most secure methods. To that end, PHP 5.5 added a new password-hashing library created by Anthony Ferrara (@ircmaxell). The library makes several functions available that you can use to handle one-way password encryption with current best-practice methods. Other features anticipate future security needs so that as computers and hackers get more advanced, you can stay a step ahead of the bad guys. This article gives you an in-depth introduction to the library's functions and how to make the best use of them.
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Two-phase commit protocol
Saved by uncleflo on January 27th, 2017.
In transaction processing, databases, and computer networking, the two-phase commit protocol (2PC) is a type of atomic commitment protocol (ACP). It is a distributed algorithm that coordinates all the processes that participate in a distributed atomic transaction on whether to commit or abort (roll back) the transaction (it is a specialized type of consensus protocol). The protocol achieves its goal even in many cases of temporary system failure (involving either process, network node, communication, etc. failures), and is thus widely used.[1][2][3] However, it is not resilient to all possible failure configurations, and in rare cases, user (e.g., a system's administrator) intervention is needed to remedy an outcome. To accommodate recovery from failure (automatic in most cases) the protocol's participants use logging of the protocol's states. Log records, which are typically slow to generate but survive failures, are used by the protocol's recovery procedures. Many protocol variants exist that primarily differ in logging strategies and recovery mechanisms. Though usually intended to be used infrequently, recovery procedures compose a substantial portion of the protocol, due to many possible failure scenarios to be considered and supported by the protocol.
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AS3 Cryptography Library
Saved by uncleflo on June 10th, 2015.
As3 Crypto is a cryptography library written in Actionscript 3 that provides several common algorithms. This version also introduces a TLS engine (TLS is commonly known as SSL.)
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Same Side Technique, Point in triangle test
Saved by uncleflo on February 22nd, 2015.
A common way to check if a point is in a triangle is to find the vectors connecting the point to each of the triangle's three vertices and sum the angles between those vectors. If the sum of the angles is 2*pi then the point is inside the triangle, otherwise it is not. It works, but it is very slow. This text explains a faster and much easier method.
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Ray(/segment)-triangle intersection tests for dummies :P
Saved by uncleflo on February 22nd, 2015.
There are various ray-tri tests around. I'll describe a few of the most interesting ones because I think that there's no "definitive" ray-tri intersection. Much depends on the type of application you're going to develop. Some methods are faster if most of the tests are positive (hit), some if they are not (early rejection). Some use lots of memory to precalculate as much as possible so they are very fast for scenes with no cache-hit problems (for examples in scenes with not so many, big triangles and spatial subdivision), while others use less memory and no precalc. etc... The precalculation option is often important so I'll talk about it more here. There are two kinds of precalculations that could be useful: per-frame precalculation (something that can be precalculated for the entire scene, for every triangle, and that just needs to be updated if the triangles are animated, if it changes their position in the next frame). The other type is per-ray-bundle precalculation.
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Intersections of Rays, Planes and Triangles (3D)
Saved by uncleflo on February 22nd, 2015.
The intersection of the most basic geometric primitives was presented in the Algorithm 5 about Intersections of Lines and Planes. We will now extend those algorithms to include 3D triangles which are common elements of 3D surface and polyhedron models. We only consider transversal intersections where the two intersecting objects do not lie in the same plane. Ray and triangle intersection computation is perhaps the most frequent nontrivial operation in computer graphics rendering using ray tracing. Because of its importance, there are several published algorithms for this problem (see: [Badouel, 1990], [Moller & Trumbore, 1997], [O'Rourke, 1998], [Moller & Haines, 1999]). We present an improvement of these algorithms for ray (or segment) and triangle intersection. We also give algorithms for triangle-plane and triangle-triangle intersection.
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ROS.org | Powering the world's robots
Saved by uncleflo on June 20th, 2014.
The Robot Operating System (ROS) is a set of software libraries and tools that help you build robot applications. From drivers to state-of-the-art algorithms, and with powerful developer tools. Back in 2009, I was in the middle of programming my own general framework for robotics using Windows and C# when I came across a video of the Willow Garage PR2 plugging itself into a regular wall socket to recharge. Without another thought, I deleted every line of code I had written over the past two years, installed Linux over Windows and jumped on the ROS train..." -- Patrick Goebel, Pi RobotBack in 2009, I was in the middle of programming my own general framework for robotics using Windows and C# when I came across a video of the Willow Garage PR2 plugging itself into a regular wall socket to recharge. Without another thought, I deleted every line of code I had written over the past two years, installed Linux over Windows and jumped on the ROS train..." -- Patrick Goebel, Pi Robot
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White Label SEO Services - Essential Marketer Birmingham
Saved by uncleflo on March 3rd, 2014.
We provide a white label SEO service to web designers, marketing agencies and PR agencies who want to provide a high quality SEO service, but either lack the expertise, systems and knowledge in-house or simply lack the manpower to deliver the campaign as effectively as they would like. In essence, our service enables you to resell our services to your clients as though you were providing the service yourself. Our white label SEO service will provide you with the best of both worlds – you get the SEO client and we do the work. Since the latest raft of algorithm updates from Google, Essential Marketer has had a massive increase in clients using its white label SEO services.
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Stratosphere » Next Generation Big Data Analytics Platform
Saved by uncleflo on February 10th, 2014.
It combines the strengths of MapReduce/Hadoop with powerful programming abstractions in Java and Scala and a high performance runtime. Stratosphere has native support for iterations, incremental iterations, and programs consisting of large DAGs of operations.
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OpenPGP.org - The OpenPGP Alliance Home Page
Saved by uncleflo on February 8th, 2014.
OpenPGP is the most widely used email encryption standard in the world. It is defined by the OpenPGP Working Group of the Internet Engineering Task Force (IETF) Proposed Standard RFC 4880. The OpenPGP standard was originally derived from PGP (Pretty Good Privacy), first created by Phil Zimmermann in 1991. The OpenPGP Alliance is a growing group of companies and other organizations that are implementers of the OpenPGP Proposed Standard. The Alliance works to facilitate technical interoperability and marketing synergy between OpenPGP implementations.
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What is Litecoin?
Saved by uncleflo on May 10th, 2013.
Litecoin is a peer-to-peer Internet currency that enables instant payments to anyone in the world. It is based on the Bitcoin protocol but differs from Bitcoin in that it can be efficiently mined with consumer-grade hardware. Litecoin provides faster transaction confirmations (2.5 minutes on average) and uses memory-hard, scrypt-based mining proof-of-work algorithm to target the regular computers and GPUs most people already have. The Litecoin network is scheduled to produce 84 million currency units. One of the aims of Litecoin was to provide a mining algorithm that could run at the same time, on the same hardware used to mine bitcoins. With the rise of specialized ASICs for Bitcoin, Litecoin continues to satisfy these goals. It is unlikely for ASIC mining to be developed for Litecoin until the currency is widely used.
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How to create a random string using PHP? - Stack Overflow
Saved by uncleflo on February 4th, 2013.
The basic algorithm is to generate <length> times a random number between 0 and <number of characters> − 1 we use as index to pick a character from our set and concatenate those characters. The 0 and <number of characters> − 1 bounds represent the bounds of the $charset string as the first character is addressed with $charset[0] and the last with $charset[count($charset) - 1].
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Adrian Dalca personal webpage
Saved by uncleflo on October 22nd, 2012.
I am a graduate student at MIT, advised by Dr. Polina Golland. My main research work is on algorithm development in medical imaging analysis. I've also been very fortunate to work in Bioinformatics with professor Michael Brudno at UofT and in geophysics with professor Jerry Mitrovica at UofT. My wife is also at MIT, and you'd surely be enriched by visiting her webpage (I mean, come on, how many bio students have a webpage anyway?).
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OpenCV Tutorial 5
Saved by uncleflo on June 24th, 2012.
The first transform I will cover is Canny Edge Detection. The book describes Sobel and Laplace operators for gradient detection, for more technical details about their function please see the text. The Canny Edge Detection algorithm takes the derivative of an image to find the gradients, then determines the direction of these gradients (vertical, horizontal, diagonal up, diagonal down). Then if the amplitude of a given gradient is high enough (the high threshold), the algorithm will trace along that gradient in its direction until the amplitude falls below the low threshold, or the gradient changes direction sharply. The algorithm will also suppress local non-maximums around the edges. cvCanny implements this algorithm. The inputs are the two images to be used, the thresholds, and the aperature size of the convolution kernal. For this example I created two sliders that adjust the thresholds, try moving the sliders and see the effect of the thresholds on the resulting edges.
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VLFeat - Home
Saved by uncleflo on June 16th, 2012.
The VLFeat open source library implements popular computer vision algorithms including SIFT, MSER, k-means, hierarchical k-means, agglomerative information bottleneck, and quick shift. It is written in C for efficiency and compatibility, with interfaces in MATLAB for ease of use, and detailed documentation throughout. It supports Windows, Mac OS X, and Linux. The latest version of VLFeat is 0.9.14.
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Bioloid based Humanoid Soccer Robot Design - rossir24-0014
Saved by uncleflo on May 19th, 2012.
This paper presents an overview of a humanoid soccer robot, build out of readily available hardware. The system architecture is covered in detail thereby enabling the reader to build a starter system for entering bipedal, humanoid soccer competitions. The structure of motion-pages of a Bioloid robot is presented. A vision algorithm to detect goal posts, used for Self-Localisation of the robot, is described. The robot's performance in the FIRA WorldCup 2007 is analysed and some improvements suggested.
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