Multivariate time series refers to a collection of multiple time series data points collected or observed over time. Unlike univariate time series, which involves a single variable or feature analyzed at different time points, multivariate time series consists of two or more variables that may be related to each other. This relationship can help to identify patterns, correlations, or dynamics that wouldn't be evident from analyzing each time series independently.
Tidal prism refers to the volume of water that is exchanged between a tidal body of water, such as an estuary or a coastal bay, and the open sea during a tidal cycle. It is the difference in water volume between high tide and low tide in a specific location. Tidal prism can be calculated by measuring the area of the water body and the change in water level (i.e., the tidal range) during the tidal cycle.
"The New Policeman" is a children's novel written by Irish author Kate Thompson, published in 2005. The story revolves around a young boy named J.J. Liddy, who lives in a small Irish village. As he discovers that time is running out in his world, he embarks on a fantastical journey that intertwines music, folklore, and adventure, linking contemporary life with Irish mythology.
Exponential smoothing is a statistical technique used for forecasting time series data. It involves using weighted averages of past observations, with the weights decaying exponentially. This means that more recent observations have a greater influence on the forecast than older observations. Exponential smoothing is particularly useful for data with trends and seasonal patterns. There are several types of exponential smoothing methods, including: 1. **Simple Exponential Smoothing**: This method is used for time series data without trends or seasonal patterns.
The term "rotation system" can refer to several concepts depending on the context in which it is used. Here are a few possibilities: 1. **Mathematics and Physics**: In mathematics, particularly in geometry and physics, a rotation system can refer to a mathematical construct that describes how objects rotate around a point in space. For example, in the context of rigid body dynamics, it often involves the use of rotation matrices or quaternion representations.
The Grothendieck–Riemann–Roch theorem is a fundamental result in algebraic geometry and algebraic topology that extends classical Riemann–Roch theorems for curves to more general situations, particularly for algebraic varieties. The theorem originates from the work of Alexander Grothendieck in the 1950s and provides a powerful tool for calculating the dimensions of certain cohomology groups.
The Tate conjecture is a significant hypothesis in the field of algebraic geometry, particularly in the study of algebraic cycles on algebraic varieties over finite fields. It is named after the mathematician John Tate, who formulated it in the 1960s.
The Enhanced Fujita (EF) scale is a classification system used to rate the severity of tornadoes based on the damage they cause to buildings and vegetation. It was introduced in 2007 as an improvement to the original Fujita scale, which was developed by Dr. Tetsuya Theodore Fujita in the 1970s.
The term "Power Flash" can refer to different things depending on the context: 1. **Technology and Electronics**: In some technical contexts, "Power Flash" might refer to a rapid surge of electrical power, perhaps used in relation to systems that require brief high-power bursts, such as in certain motors or power supplies.
TWISTEX, or the Tactical Weather Instrumentation for Storms and Tornadoes Experiment, is a research project focused on understanding severe weather phenomena, particularly tornadoes. The initiative involves deploying instrumented vehicles and equipment into storm-prone areas to collect data during severe weather events. This real-time data collection helps scientists analyze storms, improve forecasting models, and advance knowledge about the dynamics of tornado formation.
Amiibo are toys-to-life figurines created by Nintendo, which use near-field communication (NFC) technology to interact with various Nintendo video games and systems. Each Amiibo is designed to resemble a character from a Nintendo franchise, such as Mario, Link from "The Legend of Zelda," or characters from "Super Smash Bros." series.
Corinthian figures are a style of ornate and decorative figures in ancient Greek art, particularly associated with the Corinthian order of architecture. The Corinthian order, one of the classical orders of ancient Greek architecture, is characterized by its elaborate column capitals adorned with acanthus leaves and scrolls. In the context of sculpture or art, Corinthian figures often depict mythological themes, deities, or life-sized human forms that reflect the aesthetic and cultural values of Corinth during its height.
Sylvanian Families is a popular line of collectible toy figurines and playsets created by the Japanese company Epoch Co., Ltd. Since its initial release in 1985, Sylvanian Families has captured the imagination of children and collectors alike with its charming, anthropomorphic animal characters and detailed miniature worlds. The figurines are typically made of high-quality plastic and are designed to resemble various animals, such as rabbits, bears, cats, and many other woodland creatures.
"Trash Bag Bunch" is likely a name or title that refers to an art project, community initiative, or a creative concept involving trash bags. It could involve themes of environmental awareness, waste management, or artistic expressions using trash bags as a medium. However, as of my last update in October 2023, there isn't widely known information or a specific definition for "Trash Bag Bunch.
Andrzej Gawroński is a Polish name, and it might refer to various individuals, but without specific context, it's hard to provide precise information. One notable figure was a Polish linguist known for his contributions to linguistic studies.
Transport by sea or ocean, often referred to as maritime transport, involves the movement of goods or passengers across large bodies of water. This mode of transport is crucial for global trade and plays a significant role in the economy of many countries. Here are some key aspects of maritime transport: 1. **Types of Vessels**: Various types of vessels are used in maritime transport, including container ships, bulk carriers, oil tankers, LNG carriers, passenger ships, ferries, and fishing boats.
Mobility transition refers to the ongoing transformation in how people and goods move within and between urban and rural areas, influenced by technological, social, environmental, and economic changes. This transition encompasses various aspects, including: 1. **Sustainability**: A shift towards more sustainable modes of transportation, such as electric vehicles, public transit, cycling, and walking, aimed at reducing greenhouse gas emissions and reliance on fossil fuels.
The 2015 Indian Science Congress ancient aircraft controversy arose during a session of the Indian Science Congress held in January 2015 in Mumbai. The controversy was triggered by a presentation made by a professor named K. K. B. A. Bansal, who claimed that ancient Hindu texts contained references to advanced technologies, including the concept of ancient flying machines called "Vimanas.
Boardsports, also known as board sports, refer to a category of sports that involve riding on a board, typically over various surfaces such as snow, water, or land. These activities often emphasize balance, control, and skill. Common examples of boardsports include: 1. **Snowboarding**: Riding down snow-covered slopes on a snowboard. 2. **Surfing**: Riding ocean waves on a surfboard.
Autonomous Mobility on Demand (AMoD) is a transport system that uses autonomous vehicles (self-driving cars, shuttles, or buses) to provide on-demand mobility services. This concept combines the principles of autonomous vehicle technology with ride-hailing or public transport models, facilitating a more efficient and flexible transportation system.

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