Noise temperature is a concept used in radio frequency (RF) engineering and antenna theory to quantify the amount of thermal noise generated by an antenna or its surrounding environment. Specifically, it is an effective temperature that characterizes the noise power generated by the random motion of electrons in the antenna and the surrounding materials, which can affect signal reception and transmission.
A nonelementary problem refers to a type of problem in computational complexity that cannot be solved using elementary functions or approaches. In the context of computational complexity theory, elementary functions are typically those that can be generated from basic operations (addition, multiplication, exponentiation) in a limited number of steps. Nonelementary problems often involve more complex operations, such as those that require non-elementary growth rates, which may be related to functions that exceed polynomial or exponential bounds.
Nonlinear modeling refers to the process of creating mathematical models in which the relationships between variables are not linear. In contrast to linear models, where changes in one variable result in proportional changes in another, nonlinear models can capture more complex relationships where changes in one variable may lead to disproportionate or varying changes in another.
Non-stoichiometric compounds are materials that do not conform to a fixed ratio of their constituent elements, meaning their composition can vary between certain limits. Unlike stoichiometric compounds, which have a well-defined, consistent chemical formula (e.g., water \(H_2O\) or sodium chloride \(NaCl\)), non-stoichiometric compounds can have varying amounts of one or more elements, leading to different properties.
Direction of Arrival (DoA) refers to the technique of determining the direction from which a signal arrives at a sensor or an array of sensors. This concept is widely used in various fields such as telecommunications, radar, sonar, and audio processing. ### Key Aspects of Direction of Arrival: 1. **Signal Processing**: DoA estimation involves analyzing the received signals to ascertain from which directional angle they originated.
North America transportation stubs typically refer to incomplete or draft articles related to transportation topics in North America on platforms like Wikipedia. These stubs usually contain basic information about a subject, such as a transportation system, infrastructure, agency, or historical event, but lack comprehensive details. Wikipedia encourages contributors to expand these stubs by adding more information, references, and context to improve the overall quality of the content.
Norway uses the metric system for units of measurement, which is consistent with most countries worldwide. Here are some common metric units used in Norway: 1. **Length**: - Meter (m) - Centimeter (cm) - Millimeter (mm) - Kilometer (km) 2. **Mass/Weight**: - Kilogram (kg) - Gram (g) - Tonne (t) 3.
The Min-Max Theorem is a fundamental result in game theory that applies primarily to zero-sum games. It provides a strategy for players in competitive situations where one player's gain is exactly equal to the other's loss. The essence of the Min-Max Theorem can be summarized as follows: 1. **Zero-Sum Games**: In a zero-sum game, the total payoff to all players sums to zero. If one player wins, the other must lose an equivalent amount.
Olga Hahn-Neurath was an Austrian philosopher and a significant figure in the field of scientific philosophy and the philosophy of science. She was born in 1882 and passed away in 1937. Hahn-Neurath is particularly known for her work in logic, the philosophy of language, and her contributions to the development of the social sciences. She was involved with the Vienna Circle, a group of philosophers and scientists dedicated to logical positivism and the development of a formal language for science.
"Olynthiacs" refers to a series of speeches delivered by the ancient Athenian orator Demosthenes in the 4th century BCE. These speeches were addressed to the Athenian assembly and focused on the need to aid the city of Olynthus, which was threatened by Philip II of Macedon.
"Operation Jungle" can refer to several different initiatives or operations in various contexts, including military, environmental, or humanitarian efforts. 1. **Military Operations**: There have been military operations with the code name "Operation Jungle," sometimes related to counter-insurgency or anti-drug efforts in specific regions.
An Optophone is a device designed to convert visual information into sound, allowing individuals who are blind or visually impaired to perceive their surroundings through auditory signals. The concept utilizes the principle of translating visual patterns into corresponding audio representations, enabling users to "listen" to their environment. Optophones can vary in complexity and functionality. Some models may use cameras and computer processing to analyze visual input and convert it into sounds or tones, while others might utilize simpler systems with basic sensors.
The Ornstein–Zernike equation is a fundamental relation in statistical mechanics and liquid state theory, which describes the relationship between the direct correlation function and the total correlation function of a fluid. It is particularly important in understanding the structure of liquids and solutions.
Otto Brune does not appear to be widely recognized in popular culture, history, or notable figures up until my last update in October 2023. It’s possible that he could be a lesser-known individual, a fictional character, or a name associated with a specific niche that isn't broadly covered in general sources.
Oven temperatures refer to the heat settings used during cooking or baking in an oven. These temperatures are typically measured in degrees Fahrenheit (°F) or degrees Celsius (°C) and can vary significantly depending on the recipe and the desired outcome. Here’s a general breakdown of common oven temperature settings: 1. **Low temperatures**: - **200°F (93°C)**: Used for keeping food warm.
The overhand throw is a technique used in various sports and activities, such as baseball, softball, football, and ultimate frisbee, among others. It involves throwing an object, like a ball or frisbee, over the shoulder with an arm motion that extends above the head.
A Passenger Locator Form (PLF) is a document required by many countries for travelers entering their borders, particularly in response to health concerns such as the COVID-19 pandemic. The purpose of the form is to help track and manage the spread of infectious diseases by collecting information on travelers' contact details, travel history, and health status. Typically, a PLF includes the following information: 1. **Personal Information**: Full name, date of birth, nationality, and passport number.
Patricia L. Clark could refer to multiple individuals, as it is a relatively common name. Without specific context, it's challenging to determine exactly which Patricia L. Clark you are referring to. For instance, she may be known in academia, literature, business, or other fields.
Patricia Wakeling does not appear to be a widely recognized public figure, event, or concept based on the available information up to October 2023. It is possible that she could be a private individual or a less-known figure in a specific context.
A "bit" is the most basic unit of information in computing and digital communications. The term "bit" is short for "binary digit." A bit can have one of two possible values: 0 or 1. In binary notation, these bits are used to represent various forms of data, including numbers, text, images, and more. Bits are fundamental to the workings of computers and digital systems, as they underpin all digital data processing.

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