uncleflo
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How Do Interest Rates Work? | Financial Literacy | Investment U
Saved by uncleflo on September 23rd, 2022.
If you’re buying your first home or getting ready to invest in securities for the first time, you probably have a lot of questions. The first and most important should be, “How do interest rates work?” This is an invaluable first question to ask because it’ll govern how you look at your investment – whether you’re a borrower taking on new debt or an investor calculating ROI. The fact is interest rates are the defining variables that control investments. Even more important than time, interest rates dictate what you can expect to gain from an equity or owe in debt. But they’re not just numbers – they have meaning and purpose. Understanding how interest rates work is your secret to maximizing your choices when it comes to investing. Here’s what you should know about this all-important governing factor. An interest rate is a percentage of a principal value that’s owed in regular intervals over the term of an investment. It’s the cost of borrowing money. Or, if you’re the creditor, it’s your rate of return. An interest rate is what makes lending money lucrative, and it’s a way of determining the cost of borrowing before you decide to take a loan. Here’s a simple example:
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Comprehensive Portrait Photography Training | The Portrait System
Saved by uncleflo on February 13th, 2022.
Invest in YOU this year to create the business of your dreams. The Portrait System is a comprehensive, step-by-step system that helps you learn everything you need to know to have the profitable portrait photography business you've always dreamed of. Developed by Sue Bryce, The Portrait System guides you through the process of starting and growing a profitable and sustainable portrait photography business. Each course in The Portrait System video library focuses on one specific topic, from how to pose a certain body type to how to create marketing materials to attract more clients — and everything in between. SBE Members get concrete answers, pinpointed explanations, exact instructions and step-by-step guides to achieve their photography and business goals. My name is Sue Bryce. I've been a portrait photographer for 28 years. I'm a business owner and I'm an educator. I have this deep passion for watching people go through the process of being photographed. Now my passion has extended to helping photographers build their confidence, brand, and their income. I love watching people unfold in front of the camera and seeing their light shine out. What comes out is, “Am I okay being the best that I can be?” “Is it okay that I'm allowed to shine?” “That I'm allowed to love myself?” “That I'm allowed to be good enough?” Well building a business is no different.
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Inflation and price indices - Office for National Statistics
Saved by uncleflo on February 9th, 2022.
Inflation and price indices: The rate of inflation is the change in prices for goods and services over time. Measures of inflation and prices include consumer price inflation, producer price inflation and the House Price Index. A roundup of the latest data and analysis on the UK economy, business and jobs following Brexit and during the coronavirus (COVID-19) pandemic. Change over 12 months.
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PHP: Trader - Manual
Saved by uncleflo on January 16th, 2022.
Technical Analysis for Traders. The trader extension is a free open source stock library based on TA-Lib. It's dedicated to trading software developers requiring to perform technical analysis of financial market data. Alongside many indicators like ADX, MACD, RSI, Stochastic, TRIX the candlestick pattern recognition and several vector arithmetic and algebraic functions are present. Calculations can be done in two modes - TA-Lib and Metastock. Changing it using trader_set_compat() will affect the way some trader functions work. Some trader functions provide different results depending of the "starting point" of the data being involved. This is often referred as a function having memories. An example of such function is the Exponential Moving Average. It is possible to control the unstable period (the amount of data to strip off) using trader_set_unstable_period() function. Extended documentation about indicators, formulas and implementations in other programming languages can be found under » tadoc.org.
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GitHub - mrjbq7/ta-lib: Python wrapper for TA-Lib (http://ta-lib.org/).
Saved by uncleflo on January 16th, 2022.
This is a Python wrapper for TA-LIB based on Cython instead of SWIG. From the homepage: TA-Lib is widely used by trading software developers requiring to perform technical analysis of financial market data. The original Python bindings included with TA-Lib use SWIG which unfortunately are difficult to install and aren't as efficient as they could be. Therefore this project uses Cython and Numpy to efficiently and cleanly bind to TA-Lib -- producing results 2-4 times faster than the SWIG interface.
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Fuels - Higher and Lower Calorific Values
Saved by uncleflo on January 12th, 2022.
Engineering ToolBox - Resources, Tools and Basic Information for Engineering and Design of Technical Applications! Energy content or calorific value is the same as the heat of combustion, and can be calculated from thermodynamical values, or measured in a suitable apparatus: A known amount of the fuel is burned at constant pressure and under standard conditions (0°C and 1 bar) and the heat released is captured in a known mass of water in a calorimeter. If the initial and final temperatures of the water is measured, the energy released can be calculated using the equation
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The Stoch RSI : A Powerful Signal for Stock Pickers! - PLblog
Saved by uncleflo on May 15th, 2021.
In a previous piece, https://www.plindia.com/blog/stochastic-oscillators-defined/, we had talked about how the Stochastic Oscillator can be a simple to understand yet powerful tool to pick stocks – just like its other cousin Williams % R. One often uses this indicator with something like RSI to gauge momentum and can give powerful insights into emerging trends What if, therefore, there was a tool that captured it all in one single indicator! Introducing Stoch RSI! The Stochastic RSI indicator, developed by Tushard Chande and Stanley Kroll, is an oscillator that uses RSI values, instead of price values, as inputs in the Stochastic formula. The indicator measures where the RSI’s current value is relative to its high/low range for the specified period – thus becoming an indicator of indicators!
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How Heat Pumps Work - ADVANCED (design data) - YouTube
Saved by uncleflo on October 11th, 2019.
In this video we take a look at the technical data of how heat pumps work. Covering the basics, showing the typical system along with the main components and an animated drawing explaining its operation in both cooling and heating mode as well as how the refrigerant works.
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Ductwork sizing, calculation and design for efficiency - HVAC Basics + full worked example - YouTube
Saved by uncleflo on October 11th, 2019.
How to design a duct system. In this video we'll be learning how to size and design a ductwork for efficiency. Includes a full worked example as well as using CFD simulations to optimise the performance and efficiency. Discover more than 50 free on-demand webinars on different topics, from ventilation or data center design and wind load analysis to aerospace, F1, and sports aerodynamics here.
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SimScale - CFD, FEA, and Thermal Simulation in the Cloud | CAE
Saved by uncleflo on October 11th, 2019.
SimScale supports all standard 3D files so you can continue using the CAD system you are familiar with. Use the SimScale add-ons to make your workflow as simple as possible. Most simulation tools are complex and difficult to understand. SimScale uses a lean simulation workflow that guides you through the process step-by-step. And with the help of ready-to-use simulation templates, you never have to start from scratch.
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Four laws of electromagnetism that you should know
Saved by uncleflo on July 22nd, 2019.
The operation of electric motors is governed by various laws of electricity and magnetism, including Faraday’s law of induction, Ampère’s circuital law, Lenz’ law, and the Lorentz force. The first two – Faraday’s law and Ampère’s circuital law – are included in Maxwell’s equations. Together with Lenz’ law and the Lorentz force, these principles form the basis of electromagnetism.
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Calculate Stamp Duty Land Tax (SDLT)
Saved by uncleflo on April 18th, 2019.
This calculator can be used for property purchases that are: for first-time buyers, replacing main residence, additional property, residential or non-residential, freehold or leasehold. The calculator will work out the SDLT payable for most transactions. You should check the guidance if you are uncertain about how SDLT applies to your purchase or if you believe it may qualify for a relief. There are different rules for a corporate body purchasing residential property for more than £500,000.
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Displacement-Length Ratio of a Yacht: Skipper's Basics – no-frills-sailing.com
Saved by uncleflo on February 24th, 2019.
When sailors are talking about their boats they often refer to ratios and numbers. That´s a tendency in human behaviour to try to generalize things to make them comparable. Of course, everybody knows that you cannot really describe apple to pears and so it´s worthless to describe a let´s say Seventies IOR-era King´s Cruiser 33 like mine to a modern day cruising yacht but we nevertheless tend to do so. The Displacement-Length-Ratio in general is a non-dimensional number. It sets into relation the displacement of a boat (expressed in pounds) to the length of her waterline (in feet). So, in general, this ratio is looking for the relation between the (heavy?) volume of water being pushed aside by a boat´s hull and the length (and therefore speed potential see for my article Hull speed vs. Froude number here) of her hull. Sounds fair enough?
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An Introduction to Lean Canvas – Steve Mullen – Medium
Saved by uncleflo on January 4th, 2019.
As an entrepreneur, one of the most important tasks you can perform is getting your idea(s) out from your head into a tangible format so that you can communicate that with others. In the past, this usually meant a well-researched business plan, that would usually take weeks (more like months) to create. I turn to the Lean Canvas to help me quickly formulate possible business models, product launches, campaigns and variations of, and communicate this with my stakeholders for my Lead Flow Method work. Having the Lean Canvas as a visual guide made this part “communicating the model/idea” so much more effective — and I think the most valuable function of the tool. The problem with business plans for startups & entrepreneurs are that they’re a waste of time, don’t get me wrong a well-researched business plan is important but only at the right stage of your business (usually when you’re in growth/investment). This quote from Steve Blank sums up this point in case: “Business Plan: a document investors make you write, that they don’t read”. The key fundamental to Lean methodology is the elimination of waste — this includes time, processes, inventory and more. So as a lean startup you need a quicker way to get ideas out of your head, you need to stay lean & avoid waste — so, it’s time to introduce Lean Canvas.
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2 Sentiment analysis with tidy data | Text Mining with R
Saved by uncleflo on December 23rd, 2018.
In the previous chapter, we explored in depth what we mean by the tidy text format and showed how this format can be used to approach questions about word frequency. This allowed us to analyze which words are used most frequently in documents and to compare documents, but now let’s investigate a different topic. Let’s address the topic of opinion mining or sentiment analysis. When human readers approach a text, we use our understanding of the emotional intent of words to infer whether a section of text is positive or negative, or perhaps characterized by some other more nuanced emotion like surprise or disgust. We can use the tools of text mining to approach the emotional content of text programmatically, as shown in Figure 2.1.
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Term Frequency and Inverse Document Frequency (tf-idf) Using Tidy Data Principles
Saved by uncleflo on December 23rd, 2018.
A central question in text mining and natural language processing is how to quantify what a document is about. Can we do this by looking at the words that make up the document? One measure of how important a word may be is its term frequency (tf), how frequently a word occurs in a document. There are words in a document, however, that occur many times but may not be important; in English, these are probably words like “the”, “is”, “of”, and so forth. We might take the approach of adding words like these to a list of stop words and removing them before analysis, but it is possible that some of these words might be more important in some documents than others. A list of stop words is not a sophisticated approach to adjusting term frequency for commonly used words. Another approach is to look at a term’s inverse document frequency (idf), which decreases the weight for commonly used words and increases the weight for words that are not used very much in a collection of documents. This can be combined with term frequency to calculate a term’s tf-idf, the frequency of a term adjusted for how rarely it is used. It is intended to measure how important a word is to a document in a collection (or corpus) of documents. It is a rule-of-thumb or heuristic quantity; while it has proved useful in text mining, search engines, etc., its theoretical foundations are considered less than firm by information theory experts.
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Weighting words using Tf-Idf - NLP-FOR-HACKERS
Saved by uncleflo on December 23rd, 2018.
If I ask you “Do you remember the article about electrons in NY Times?” there’s a better chance you will remember it than if I asked you “Do you remember the article about electrons in the Physics books?”. Here’s why: an article about electrons in NY Times is far less common than in a collection of physics books. It is less likely to stumble upon the “electron” concept in NY Times than in a physics book. Let’s consider now the scenario of a single article. Suppose you read an article and you’re asked to rank the concepts found in the article by importance. The chances are you’ll basically order the concepts by frequency. The reason is simply that important stuff would be mentioned repeatedly because the narrative gravitates around them. Combining the 2 insights, given a term, a document and a collection of documents we can loosely say that:importance ~ appearances(term, document) / count(documents containing term in collection).
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Online Algebra Calculator | Maxima-online
Saved by uncleflo on April 2nd, 2015.
Calculate the Jacobian from a website, very powerful. Many of users do not use powerful Maxima computer algebra system for systematic work, but for ad hoc algebraic calculations – equations, functions, matrixes, etc. only. To do this job, it is not useful to download the whole application from a web site.
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Calculate distance and bearing between two Latitude/Longitude points using Haversine formula in JavaScript
Saved by uncleflo on March 26th, 2015.
This page presents a variety of calculations for latitude/longitude points, with the formulæ and code fragments for implementing them. All these formulæ are for calculations on the basis of a spherical earth (ignoring ellipsoidal effects) – which is accurate enough* for most purposes.
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Creating a shared and static library with the gnu compiler [gcc]
Saved by uncleflo on February 8th, 2015.
Here's a summary on how to create a shared and a static library with gcc. The goal is to show the basic steps. I do not want to go into the hairy details. It should be possible to use this page as a reference.
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Calculating the Eigenvalue and Eigenvector of a Matrix on the TI-89 Family, TI-92 Plus, and Voyage™ 200 Graphing Calculators. - Knowledge Base by Texas Instruments - US and Canada
Saved by uncleflo on January 20th, 2015.
How do I calculate the eigenvalue and eigenvector of a matrix on the TI-89 family, TI-92 Plus, and Voyage 200 graphing calculators? To calculate the eigenvalue and eigenvector of a matrix on the TI-89 family, TI-92 Plus, and Voyage 200 refer to the instructions below
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The Engineering Toolbox - Area Moment of Inertia
Saved by uncleflo on September 2nd, 2014.
Resources, Tools and Basic Information for Engineering and Design of Technical Applications! This great website is a great lookup site for formulas and calculations used in the engineering world. Second Moment of Area or Area Moment of Inertia. Moment of Inertia of an Area, Area Moment of Inertia, also known as Second Moment of Area - I, is a property of shape that is used to predict deflection, bending and stress in beams.
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FoilSim Download
Saved by uncleflo on June 3rd, 2014.
FoilSim - Student was developed at the NASA Glenn Research Center in an effort to foster hands-on, inquiry-based learning in science and math. FoilSim is interactive simulation software that determines the airflow around various shapes of airfoils. The Airfoil View Panel (shown below) is a simulated view of a wing being tested in a wind tunnel with air moving past it from left to right. Students change the position and shape of the wing by moving slider controls that vary the parameters of airspeed, altitude, angle of attack, thickness and curvature of the airfoil, and size of the wing area. The software displays plots of pressure or airspeed above and below the airfoil surface. A probe monitors air conditions (speed and pressure) at a particular point on or close to the surface of the airfoil. The software calculates the lift of the airfoils, allowing students to learn the factors that influence lift. The software includes a stall model for the airfoil and a model of the Martian atmosphere for lift comparisons. The latest version (FoilSim III - Version 1.4b) performs a table look-up of experimental data to determine the drag of the foil. A technical paper describing the details of the mathematical method used in FoilSim is also available.
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True, Reactive, and Apparent power : Power Factor
Saved by uncleflo on February 23rd, 2014.
We know that reactive loads such as inductors and capacitors dissipate zero power, yet the fact that they drop voltage and draw current gives the deceptive impression that they actually do dissipate power. This “phantom power” is called reactive power, and it is measured in a unit called Volt-Amps-Reactive (VAR), rather than watts. The mathematical symbol for reactive power is (unfortunately) the capital letter Q. The actual amount of power being used, or dissipated, in a circuit is called true power, and it is measured in watts (symbolized by the capital letter P, as always). The combination of reactive power and true power is called apparent power, and it is the product of a circuit's voltage and current, without reference to phase angle. Apparent power is measured in the unit of Volt-Amps (VA) and is symbolized by the capital letter S.
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Magnitude & Phase - Minimum Phase
Saved by uncleflo on February 8th, 2014.
Ah yes, magnitude and phase. You probably never actually have to bother calculating them explicitly now, seeing as Matlab and Octave will do it for you.
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