Real representation can refer to different concepts depending on the context in which it is used. Here are a few interpretations: 1. **Mathematics**: In mathematics, particularly in real analysis, a "real representation" often refers to expressing a mathematical object or function explicitly in terms of real numbers. For example, representing complex numbers in terms of their real and imaginary components.
The Fragility Index is a statistical measure used primarily in the field of clinical research and evidence-based medicine to assess the robustness of the results of clinical trials, particularly in relation to binary outcomes (e.g., yes/no, success/failure). It quantifies how many patients would need to be reassigned to the opposite treatment group in order for the trial results to become statistically non-significant.
Automated whole-breast ultrasound (AWBU) is a medical imaging technique used primarily in breast cancer screening and diagnosis. Unlike traditional hand-held ultrasound, which requires a sonographer to manually move the transducer over the breast, automated whole-breast ultrasound utilizes a specialized device that automatically captures images of the entire breast.
Portable ultrasound refers to ultrasound equipment that is designed to be compact, lightweight, and easily transportable. Unlike traditional ultrasound machines that are typically large and require a fixed installation, portable ultrasound devices can be used in various settings, including clinics, emergency rooms, ambulances, and even in patients' homes. Key features of portable ultrasound devices include: 1. **Size and Weight**: These machines are generally smaller and lighter than traditional models, making them easier to handle and move.
The 117th meridian west is an imaginary line of longitude that is located 117 degrees west of the Prime Meridian. This meridian runs from the North Pole to the South Pole, passing through several U.S. states, including parts of Montana, Wyoming, Colorado, New Mexico, and California. It also crosses into Mexico and runs through various landscapes, such as mountains, plains, and desert regions.
The 128th meridian east is a line of longitude that is 128 degrees east of the Prime Meridian, which is located in Greenwich, London, England. Meridians are used in geographic coordinate systems to define locations on the Earth's surface. The 128th meridian east runs through several countries in the Asia-Pacific region. It passes through parts of Russia, including the Kuril Islands, and then through Japan before continuing over the Pacific Ocean.
A climograph is a graphical representation that displays the average temperature and precipitation for a specific location over a certain period, usually a year. It typically features two axes: the vertical axis shows temperature (usually in degrees Celsius or Fahrenheit), and the horizontal axis represents the months of the year. In a climograph, temperature data is often displayed as a line graph, while precipitation data is typically represented as bars.
The 13th meridian west is a line of longitude that is located 13 degrees west of the Prime Meridian. It runs from the North Pole to the South Pole and passes through various countries in Europe and Africa. In detail, the 13th meridian west crosses through the following areas: - **In Europe**: It passes through countries such as Norway, Sweden, Denmark, and Germany. - **In Africa**: It goes through countries such as Mali and Algeria.
The 151st meridian west is a line of longitude located 151 degrees west of the Prime Meridian, which is designated as 0 degrees longitude. This meridian runs from the North Pole to the South Pole and passes through various regions, including parts of the Pacific Ocean, and it intersects the coast of Alaska and islands such as the Aleutian Islands.
The 156th meridian west is a line of longitude that is 156 degrees west of the Prime Meridian, which is the reference line for longitude located at 0 degrees. This meridian runs from the North Pole to the South Pole, passing through various regions. In the Northern Hemisphere, it primarily traverses parts of Alaska and the Bering Sea, while in the Southern Hemisphere, it crosses the Pacific Ocean.
The 19th meridian west is a line of longitude that is 19 degrees west of the prime meridian, which is designated as 0 degrees longitude. This meridian runs from the North Pole to the South Pole, passing through various countries in Europe and Africa.
The 21st meridian east is a line of longitude that is located 21 degrees east of the Prime Meridian, which runs through Greenwich, London, England. It runs from the North Pole to the South Pole and is used in geographic coordinate systems to help identify specific locations on the Earth's surface. The 21st meridian east passes through several countries in Africa and Europe.
A "hodograph" is a concept used primarily in the field of fluid dynamics and physics. It refers to a geometric representation of the velocity of a particle or a fluid at a given point in time, typically in a two-dimensional or three-dimensional space. In a more specific sense, a hodograph is a plot or curve that represents the path traced out by the tip of a vector representing velocity, as the particle moves.
The 36th meridian west is a line of longitude that is 36 degrees west of the Prime Meridian, which is located at Greenwich, England. Meridians are used in geography to specify locations on the Earth's surface and are measured in degrees, from 0 degrees at the Prime Meridian to 180 degrees east and west. The 36th meridian west runs from the North Pole to the South Pole, passing through various countries and bodies of water.
The 47th meridian west is a line of longitude located 47 degrees west of the Prime Meridian, which runs through Greenwich, London. This meridian is a vertical line on a map that runs from the North Pole to the South Pole. It passes through several countries, primarily in North America and South America, as well as parts of the Atlantic Ocean. In the context of geography, meridians are used to define locations and can be used in navigation and timekeeping.
The 44th meridian east is an imaginary line of longitude that runs from the North Pole to the South Pole, located 44 degrees east of the Prime Meridian, which is defined as 0 degrees longitude and runs through Greenwich, England. The 44th meridian east travels through various countries as it crosses the globe, including parts of Russia, Kazakhstan, Uzbekistan, and others.
The 68th meridian west is a line of longitude located 68 degrees west of the Prime Meridian, which runs through Greenwich, England. This meridian runs from the North Pole to the South Pole and passes through various regions in North America, including parts of Canada and the United States, as well as through the Caribbean and parts of South America.
The 64th meridian west is a line of longitude that is located 64 degrees west of the Prime Meridian, which is at 0 degrees longitude. This meridian runs from the North Pole to the South Pole, passing through various regions, primarily in North America, the Atlantic Ocean, and parts of South America.
The 78th meridian east is a line of longitude that is 78 degrees east of the Prime Meridian, which is the reference line for longitude located at 0 degrees. It runs from the North Pole to the South Pole, passing through various countries and regions along the way. In the northern hemisphere, the 78th meridian east crosses parts of India, specifically through the states of Maharashtra, Madhya Pradesh, and Uttar Pradesh.
The 92nd meridian east is a line of longitude located at 92 degrees east of the Prime Meridian. It runs from the North Pole to the South Pole and passes through several countries and regions. Some of the places it crosses include: - Russia - Mongolia - China - India - Bangladesh - Myanmar (Burma) Longitude lines like the 92nd meridian east are used in geographic coordinate systems to help locate positions on the Earth's surface.

Pinned article: Introduction to the OurBigBook Project

Welcome to the OurBigBook Project! Our goal is to create the perfect publishing platform for STEM subjects, and get university-level students to write the best free STEM tutorials ever.
Everyone is welcome to create an account and play with the site: ourbigbook.com/go/register. We belive that students themselves can write amazing tutorials, but teachers are welcome too. You can write about anything you want, it doesn't have to be STEM or even educational. Silly test content is very welcome and you won't be penalized in any way. Just keep it legal!
We have two killer features:
  1. topics: topics group articles by different users with the same title, e.g. here is the topic for the "Fundamental Theorem of Calculus" ourbigbook.com/go/topic/fundamental-theorem-of-calculus
    Articles of different users are sorted by upvote within each article page. This feature is a bit like:
    • a Wikipedia where each user can have their own version of each article
    • a Q&A website like Stack Overflow, where multiple people can give their views on a given topic, and the best ones are sorted by upvote. Except you don't need to wait for someone to ask first, and any topic goes, no matter how narrow or broad
    This feature makes it possible for readers to find better explanations of any topic created by other writers. And it allows writers to create an explanation in a place that readers might actually find it.
    Figure 1.
    Screenshot of the "Derivative" topic page
    . View it live at: ourbigbook.com/go/topic/derivative
  2. local editing: you can store all your personal knowledge base content locally in a plaintext markup format that can be edited locally and published either:
    This way you can be sure that even if OurBigBook.com were to go down one day (which we have no plans to do as it is quite cheap to host!), your content will still be perfectly readable as a static site.
    Figure 2.
    You can publish local OurBigBook lightweight markup files to either https://OurBigBook.com or as a static website
    .
    Figure 3.
    Visual Studio Code extension installation
    .
    Figure 4.
    Visual Studio Code extension tree navigation
    .
    Figure 5.
    Web editor
    . You can also edit articles on the Web editor without installing anything locally.
    Video 3.
    Edit locally and publish demo
    . Source. This shows editing OurBigBook Markup and publishing it using the Visual Studio Code extension.
    Video 4.
    OurBigBook Visual Studio Code extension editing and navigation demo
    . Source.
  3. https://raw.githubusercontent.com/ourbigbook/ourbigbook-media/master/feature/x/hilbert-space-arrow.png
  4. Infinitely deep tables of contents:
    Figure 6.
    Dynamic article tree with infinitely deep table of contents
    .
    Descendant pages can also show up as toplevel e.g.: ourbigbook.com/cirosantilli/chordate-subclade
All our software is open source and hosted at: github.com/ourbigbook/ourbigbook
Further documentation can be found at: docs.ourbigbook.com
Feel free to reach our to us for any help or suggestions: docs.ourbigbook.com/#contact