A receiver function is a geophysical tool used in seismology to analyze the structure of the Earth's crust and mantle beneath a seismic station. It is particularly useful for studying the transition zone between the crust and the underlying mantle, as well as for investigating lithospheric and asthenospheric properties. Here's how it works: 1. **Seismic Wave Propagation**: When an earthquake occurs, it generates seismic waves that travel through the Earth.
A thrust fault is a type of fault in geology where two blocks of the Earth's crust are pushed together and one block is forced over the other. This typically occurs in regions of compressional stress, where tectonic plates or sections of the Earth's crust collide or converge. In a thrust fault, the angle of the fault plane is typically less than 30 degrees.
The World-Wide Standardized Seismograph Network (WWSSN) was an important global initiative established to improve the detection and analysis of seismic activities around the world. Initiated in the 1960s, the WWSSN aimed to create a uniform system of seismograph stations that could reliably measure and record seismic waves produced by earthquakes, volcanic activity, and even nuclear detonations.
Symbolic interactionism is a sociological framework that focuses on the ways in which individuals create, interpret, and respond to symbols in their social interactions. Developed in the early 20th century, particularly by sociologists like George Herbert Mead and Herbert Blumer, this theory emphasizes the subjective nature of social reality and suggests that meaning is constructed through social interactions rather than being inherent in objects or events.
RepRap Snappy is a type of 3D printer design that is part of the RepRap project, which promotes open-source 3D printing technology. The Snappy design specifically aims to be lightweight, easy to assemble, and capable of producing high-quality prints. Key features of the RepRap Snappy include: 1. **Modular Design**: The Snappy printer often incorporates a modular structure, which means various parts can be easily replaced or upgraded.
The Singer Improved Family refers to a group of sewing machine models produced by the Singer Company, which are based on the design and mechanisms of the original Singer sewing machines. The term usually highlights improvements made in functionality, ease of use, and performance over earlier models. The "Improved" designation generally indicates enhancements in features such as stitch quality, durability, and user-friendly designs. This family of machines has been popular among both casual and professional sewists due to their reliability and efficiency.
Chiaroscuro is a technique used in visual arts, particularly painting and drawing, that employs strong contrasts between light and dark to create a sense of volume and three-dimensionality. The term comes from the Italian words "chiaro" meaning light or clear, and "scuro" meaning dark or obscure. This method enhances the dramatic effect of a piece by highlighting certain areas while casting others into shadow, thereby guiding the viewer's eye and emphasizing the contours and shapes of the subjects portrayed.
Grothendieck topology is a concept from category theory and algebraic geometry that generalizes the notion of open sets in a topological space and allows for the formalization of sheaves and sheaf theory in a more abstract context. It was introduced by the mathematician Alexander Grothendieck in his work on schemes and topos theory.
In the context of sheaf theory and category theory, the concept of "image functor" relates to the way we can understand sheaves on a topological space from their restrictions to open sets through the lens of functoriality. ### Sheaves A **sheaf** is a tool for systematically tracking locally defined data attached to the open sets of a topological space and ensuring that this data can be "glued together" in a coherent way.
As of my last update in October 2023, the term "Human Interference Task Force" does not refer to a widely recognized organization or initiative. However, it may pertain to various contexts, especially in discussions about environmental protection, scientific research, or military operations where human activities may impact natural ecosystems or social systems.
Organic photorefractive materials are a class of polymers or small organic molecules that exhibit photorefractive effects, which means they can change their refractive index in response to exposure to light. This property makes them useful for various applications in optics and photonics, including holography, optical data storage, and imaging systems.
Biocommunication refers to the ways in which living organisms communicate with each other and their environments at various biological levels. This concept encompasses a wide range of interactions, including chemical signaling, visual signals, sounds, and even physical interactions that convey information between organisms. Here are some key aspects of biocommunication: 1. **Chemical Signaling**: Many organisms use chemical signals (often called pheromones) to communicate.
Hypertext, in the context of semiotics, refers to a digital or electronic form of text that facilitates a non-linear navigation of information through interconnected nodes. The term "hypertext" combines "hyper," meaning beyond, and "text," which refers to written content. While the concept is often associated with the web and digital documents, its semiotic implications relate to how meaning is constructed and communicated through various signs and symbols in a networked environment.
The concepts of "signified" and "signifier" are fundamental components of semiotics, the study of signs and symbols and their use or interpretation. These terms were notably defined by the Swiss linguist Ferdinand de Saussure in his work on structural linguistics. 1. **Signifier**: This refers to the physical form of a sign, which can be a word, image, sound, or other representation. Essentially, it is the "form" that the sign takes.
The Organon model refers to a theoretical framework developed by the philosopher and scientist Karl Popper, particularly in the context of scientific reasoning and theory development. However, there might be some confusion with the term as it can also relate to different contexts in philosophy, logic, and even software engineering. 1. **Popper's Organon**: In Popper's philosophy, the "Organon" is a term that refers to the tools and methods that scientists use to create and test hypotheses.
Semiotics, the study of signs and symbols and their use or interpretation, can be applied to social networking to understand how meaning is constructed, communicated, and understood within these platforms. The semiotics of social networking examines how users create and interpret signs, which can include text, images, emojis, hashtags, and more, in the context of social media interactions.
Sound mimesis refers to the imitation or reproduction of natural sounds or human-made noises through artistic expression, which can be seen across various cultures. This concept manifests in different forms such as music, literature, dance, and other art forms. Here are a few examples of how sound mimesis appears in various cultures: 1. **Indigenous Cultures**: Many indigenous cultures use sound mimesis to imitate natural sounds for storytelling, rituals, and communication.
Sensitivity auditing refers to the process of assessing and evaluating the sensitivity of data within an organization, particularly focusing on how personal, confidential, or sensitive information is handled, stored, and shared. This practice is crucial for organizations that collect, process, or store data that could be classified as sensitive, such as personally identifiable information (PII), financial records, health information, or other proprietary data.

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