uncleflo
Registered since September 28th, 2017
Has a total of 4246 bookmarks.
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Tag selected: theory.
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Compressor Filter System Theory - Scuba Engineer
Saved by uncleflo on June 13th, 2022.
Many homes and small workshops have single stage compressors capable of producing 7bar/100psi pressure for powering hand tools and filling truck tires. These simple compressors use the most basic engineering techniques and are successfully mass produced out in the Far East as a low cost consumer product. It comes as quite a surprise when a dive operation comes to purchase their first high pressure divers breathing air compressor to be met with a price tag approaching that of a family car, and the use of which is surrounded by a pile of legal regulations and maintenance obligations, and competent operator requirements which if not met, will cause several well known phenomena.
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Fingerstyle guitar school - Soymartino.com
Saved by uncleflo on January 12th, 2022.
Guitar school: You will find that the exercises in the guitar school area are specifically designed to introduce you to the secrets of fingerstyle playing mastery without unnecessary words around. You will learn how to play the arrangements that I have made for many popular songs you see me playing on my soYmartino youtube channel ,as I play them for you in slow tempo and step-by-step (bar-by-bar). You will find my fingerstyle guitar tabs for each one of the arrangement so that you can follow along. Your learning success will be based on the guitar tabs-reading and tutorial-watching method. You will find challenging fingerstyle guitar lessons whether you are a beginner or an advanced guitarist. You will not have to study a multitude of music theory books as I implemented the basics of music theory effectively into the exercises already. Anything that you actually need to know in order to build good habits and become a real guitar player is already covered. You will find that I am constantly adding new guitar tabs and new tutorials on a regular basis. Also, from time to time I will add the fingerstyle guitar arrangements for popular songs by request (the "most wanted" songs ) All in all, I can assure you that through my guitar school website you will have the opportunity to expand your fingerstyle repertoire, to improve your fingerpicking technique and of improving your guitar playing in general.
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RYA Day Skipper Practical Course from Ondeck Sailing
Saved by uncleflo on December 23rd, 2019.
The RYA Day Skipper Practical Course is an introduction to taking charge onboard a yacht, allowing you to put your basic navigation, pilotage, and sailing skills into practice. It will provide you with an opportunity to take command, and to develop your leadership skills onboard, under the guidance of an experienced and friendly instructor. Upon successful completion of the RYA Day Skipper Practical Course, you will be able to navigate and skipper a small yacht in familiar waters by day. This qualification is usually required when chartering a yacht as skipper anywhere in the world. Holders of the RYA Day Skipper Practical qualification can apply for an International Certificate of Competence (ICC). If you wish to complete the Day Skipper Theory and Practical course at the same time why not check out our RYA 9 Day Combined Day Skipper Theory and Practical course to gain 2 RYA qualifications in just one week.
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IYT Day Skipper / Crew Sail | IYT Worldwide
Saved by uncleflo on December 22nd, 2019.
This is a 3 to 4 day course, depending on wind and conditions, aimed to deliver a safe, informed, confident and competent day sailor/skipper who can confidently command a sailboat up to 10 meters (32.8 feet) and crew during daylight hours in fair conditions in inland waters (bay or lake sailing) or coastal waters up to 5 miles offshore. As you advance and become more proficient as crew or skipper you take on bigger challenges that require proper training to ensure the safety of your family and friends. The bigger the boat or length of adventure the more training you require. Most of us prefer to spend our time on the water and not in a classroom. To facilitate this, IYT has a series of E-learning courses available for the theoretical part of sail and powerboat training.
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11 Tips for Welding Aluminum in the Shipbuilding Industry
Saved by uncleflo on December 20th, 2019.
Aluminum alloys are lightweight and corrosion-resistant in marine environments, making the superior material for use in the shipbuilding industry. There are two aspects that make general aluminum welding different from welding steel in the shipbuilding industry, and both are related to the fact that much of the welding is performed outdoors: Both aspects will be discussed in more detail on the next few pages. Know Which Aluminum Alloy You Are WeldingIt isn’t enough to know that you are welding aluminum. Welding professionals have to know which alloy is about to be welded, and they have to know the correct filler metal to use. The most common alloys used in shipbuilding are the Al-Mg 5XXX sheet alloys and the Al-Mg-Si 6XXX extrusion alloys, primarily because of their excellent resistance to corrosion.
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RYA Day Skipper Theory Online - Study for your RYA Day Skipper & Yachtmaster Theory anytime, anywhere
Saved by uncleflo on October 28th, 2019.
For aspiring skippers who wish to gain an entry level qualification enabling them to skipper sailing or motor yachts, including charter vessels, in countries that require certification. Studying with friends or family is fun and tends to get better results Order 2 or more courses and get a whopping 25% off every course. PLUS Order 5 or more courses and get one additional free place for every 5 students (ideal for larger families and sailing clubs). …..and not everybody has to study the same course.
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Online RYA Course Prices. From Day Skipper To Ocean Yachtmaster
Saved by uncleflo on August 14th, 2019.
Navathome.com ®RYA Theory courses Online. This course is run by the RYA and is aimed at small boat users such as speed boats, keel yachts and jet ski users. There is no follow on course so it is a bit limited. However, we do offer and upgrade course if you have already completed the Essential navigation. Essential for those wishing to work in the maritime industry. This course is aimed at those who wish to achieve ICC level theory.
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RYA Online Day Skipper Theory Course - Sailtrain.org.uk
Saved by uncleflo on August 14th, 2019.
The RYA Online Day Skipper course is a comprehensive introduction to chartwork, navigation, meteorology and the basics of seamanship. Invaluable for learning how to start making decisions on board. Unlike other online learning organisations, this course does not use video CD but a FULLY interactive learning suite. No matter where you are in the world, the Day Skipper course can be tailored to your requirements. There are no pre-course requirements for this RYA online Day Skipper theory course, but some sailing knowledge is helpful. The RYA online Day Skipper course is made up of detailed lessons, most of which are animated for easy learning. Each lesson is followed by a set of questions which can be answered online.
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tf–idf - Wikipedia
Saved by uncleflo on December 23rd, 2018.
In information retrieval, tf–idf or TFIDF, short for term frequency–inverse document frequency, is a numerical statistic that is intended to reflect how important a word is to a document in a collection or corpus. It is often used as a weighting factor in searches of information retrieval, text mining, and user modeling. The tf–idf value increases proportionally to the number of times a word appears in the document and is offset by the number of documents in the corpus that contain the word, which helps to adjust for the fact that some words appear more frequently in general. Tf–idf is one of the most popular term-weighting schemes today; 83% of text-based recommender systems in digital libraries use tf–idf. Variations of the tf–idf weighting scheme are often used by search engines as a central tool in scoring and ranking a document's relevance given a user query. tf–idf can be successfully used for stop-words filtering in various subject fields, including text summarization and classification. One of the simplest ranking functions is computed by summing the tf–idf for each query term; many more sophisticated ranking functions are variants of this simple model.
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Different Types of Chairs For Your Living Room!
Saved by uncleflo on November 29th, 2018.
Merriam Webster dictionary defines ‘chairs’ as a seat typically having the legs and a back for one person. It’s interesting that following this simple definition we have around us so many variations of this basic type of furniture. There are different types of chairs that you must know before you plan for your home furniture. For every activity that we do while sitting our comfortable postures needed are different and so the types of chairs, we need for the same should also be differently designed! For instance, a dining chair cannot be used for relaxing and vice versa. It is for the same reason that, more than colour and material it is the usage which makes one chair different from another.
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More Meaningful Typography
Saved by uncleflo on April 20th, 2018.
We have all heard of the golden mean (also known as the golden ratio or golden section): the self-replicating page with a proportion of 1:1.618 that is said to be found in everything from the design of ancient Greek architecture to the growth patterns of plants. This and other meaningful ratios rooted in geometry, music, nature, and history can be expressed as modular scales and put to work on the web. A modular scale is a sequence of numbers that relate to one another in a meaningful way. Using the golden ratio, for example, we can produce values for a modular scale by multiplying by 1.618 to arrive at the next highest number, or dividing by 1.618 to arrive at the next number down.
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Secret Symphony: The Ultimate Guide to Readable Web Typography
Saved by uncleflo on April 20th, 2018.
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?
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Scrum Certification, Agile Certification | Scrum, Agile Training
Saved by uncleflo on December 28th, 2017.
SBOK™ Guide - A Guide to the Scrum Body of Knowledge (SBOK™ GUIDE). A Guide to the Scrum Body of Knowledge (SBOK™ Guide) provides guidelines for the successful implementation of Scrum-the most popular Agile product development and project delivery methodology The Third Edition of the SBOK™ Guide provides expanded framework related to scaling Scrum for large projects, and scaling Scrum for the Enterprise.
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Data Consistency for P2P Collaborative Editing
Saved by uncleflo on June 21st, 2017.
Peer-to-peer (P2P) networks are very efficient for distributing content. We want to use this potential to allow not only distribution but collaborative editing of this content. Existing collaborative editing systems are centralised or depend on the number of sites. Such systems cannot scale when deployed on P2P networks. In this paper, we propose a new model for building a collaborative editing system. This model is fully decentralised and does not depend on the number of sites.
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Managing Hierarchical Data in MySQL
Saved by uncleflo on May 15th, 2017.
Most users at one time or another have dealt with hierarchical data in a SQL database and no doubt learned that the management of hierarchical data is not what a relational database is intended for. The tables of a relational database are not hierarchical (like XML), but are simply a flat list. Hierarchical data has a parent-child relationship that is not naturally represented in a relational database table. For our purposes, hierarchical data is a collection of data where each item has a single parent and zero or more children (with the exception of the root item, which has no parent). Hierarchical data can be found in a variety of database applications, including forum and mailing list threads, business organization charts, content management categories, and product categories.
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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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Music Stack Exchange
Saved by uncleflo on September 1st, 2016.
Music: Practice & Theory Stack Exchange is a question and answer site for musicians, students, and enthusiasts. Join them; it only takes a minute
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Combustion Elearning Cerfacs
Saved by uncleflo on July 16th, 2016.
Theoretical And Numerical Combustion, Recorded master courses, Additional materials for master courses
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Underactuated Robotics
Saved by uncleflo on April 5th, 2015.
This book is about building robots that move with speed, efficiency, and grace. I believe that this can only be achieve through a tight coupling between mechanical design, passive dynamics, and nonlinear control synthesis. Therefore, these notes contain selected material from dynamical systems theory, as well as linear and nonlinear control.
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Scratchapixel
Saved by uncleflo on February 22nd, 2015.
Everything You Ever Wanted to Know About Computer Graphics (But Were Afraid to Ask). You love Pixar movies and video games. You would love to learn how they are made and found some books on this topic at the library, but they are full of maths symbols you don't understand!
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graphics.stanford.edu/courses/cs148-10-summer/docs/2006--degreve--reflection_refraction.pdf
Saved by uncleflo on February 22nd, 2015.
When writing a ray tracer, sooner or later you’ll stumble on the problem of reflection and transmission. To visualize mirror-like objects, you need to reflect your viewing rays. To simulate a lens, you need refraction. While most people have heard of the law of reflection and Snell’s law, they often have difficulties with actually calculating the direction vectors of the reflected and refracted rays. In the following pages, exactly this problem will be addressed. As a bonus, some Fresnel equations will be added to the mix, so you can actually calculate how much light is reflected or transmitted (yes, it’s possible). At the end, you’ll have some usable formulas to use in your latest ray tracer.
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Snell's law - Wikipedia, the free encyclopedia
Saved by uncleflo on February 22nd, 2015.
Snell's law (also known as the Snell–Descartes law and the law of refraction) is a formula used to describe the relationship between the angles of incidence and refraction, when referring to light or other waves passing through a boundary between two different isotropic media, such as water, glass, or air. In optics, the law is used in ray tracing to compute the angles of incidence or refraction, and in experimental optics to find the refractive index of a material. The law is also satisfied in metamaterials, which allow light to be bent "backward" at a negative angle of refraction with a negative refractive index.
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Nozzle Design
Saved by uncleflo on September 2nd, 2014.
A rocket engine uses a nozzle to accelerate hot exhaust to produce thrust as described by Newton's third law of motion. The amount of thrust produced by the engine depends on the mass flow rate through the engine, the exit velocity of the flow, and the pressure at the exit of the engine. The value of these three flow variables are all determined by the rocket nozzle design.
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Euler-Bernoulli Beams: Bending, Buckling, and Vibration
Saved by uncleflo on September 2nd, 2014.
Euler-Bernoulli Beams: Bending, Buckling, and Vibration. 2.002 Mechanics and Materials II Department of Mechanical Engineering MIT February 9, 2004
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Torsion of Open Thin Wall Sections
Saved by uncleflo on September 2nd, 2014.
The treatment of torsion in most Mechanics of Materials textbooks is uneven. While circular cross sections are analyzed in detail (sometimes too thoroughly), the coverage of non-circular sections is typically relegated to “advanced material” covering 4-5 pages. (In this respect Beer-Johnston- DeWolf is somewhat better than Vable, who totally omits Open Thin Wall sections)
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