Blocked websites by country refer to certain online platforms or services that are restricted or completely inaccessible to users in specific countries. This blocking can occur for various reasons, including government regulations, legal restrictions, or censorship aimed at controlling the dissemination of information. Here are some common reasons for website blocking: 1. **Censorship**: Governments may restrict access to websites that contain content contrary to their political, social, or cultural values. This can include news outlets, social media platforms, or blogs.
The Tascón List refers to a database of Venezuelan citizens who signed a 2004 referendum petition indicating their desire for a recall election against former President Hugo Chávez. The list is named after the then-Venezuelan official, Jorge Tascón, who was responsible for compiling the signatures. The Tascón List became controversial because the Venezuelan government reportedly used it to target and retaliate against individuals who opposed Chávez's administration.
The term "Federal List of Extremist Materials" typically refers to a compilation of publications, materials, and media that are considered to promote extremist ideologies, including terrorism, hate speech, and other forms of radicalization. This list is often maintained by government agencies to help monitor and counteract extremist activities. In various countries, such lists may encompass a wide range of content, including books, articles, websites, and videos that are believed to incite violence or spread harmful ideologies.
The Russian Internet Restriction Bill refers to legislation aimed at enhancing the government's control over the internet within Russia. This initiative is often associated with efforts to regulate and monitor online activities, restrict access to certain types of content, and bolster national cybersecurity. Key aspects of the legislation may include: 1. **Content Control**: The bill may empower authorities to block websites and online services deemed to contain "extremist" content, misinformation, or material that contradicts state narratives.
Challenge–response spam filtering is a method of combating email spam by requiring the sender to take a specific action to prove that they are not a spammer before their message is accepted by the recipient's email server or inbox. This approach involves a two-step process: 1. **Challenge**: When an unknown sender sends an email, the recipient's email system automatically generates a "challenge" message, which is typically a request for the sender to complete a simple task.
Melaleuca, Inc. v. Hansen is a legal case that involved issues surrounding contract law, specifically concerning non-compete agreements and business practices. Melaleuca, Inc. is a large company that sells various health and wellness products, and it has been involved in litigation regarding its distributors and the terms of their agreements.
PayPal is a widely recognized online payment platform that allows individuals and businesses to make and receive payments electronically. It facilitates online transactions by providing a secure way to transfer money using credit cards, bank accounts, or funds from a PayPal account. Users can send money to anyone with an email address, make purchases from online retailers, and receive payments for goods and services. PayPal also offers features such as buyer protection, seller protection, and the ability to create invoices.
Quechup is a social networking site that was designed to help people connect with friends, family, and colleagues. It allows users to create profiles, share updates, and interact with others in various ways. The platform gained notoriety around 2006 for its aggressive marketing strategies, which included sending unsolicited emails to users' contacts when someone joined the site. This practice, often referred to as "spam," led to significant criticism and ultimately contributed to Quechup's decline in popularity.
Centrifugal force is a fictitious or apparent force that is perceived when an object moves in a circular path. It is not an actual force acting on the object; rather, it arises due to the inertia of the object and the acceleration required to keep it moving in a circular trajectory. When an object moves in a circle, it experiences centripetal acceleration directed towards the center of the circle.
Spatial acceleration generally refers to the rate of change of velocity of an object in motion, taking into account its position in three-dimensional space. It is a vector quantity, which means it has both a magnitude and a direction. In physics and engineering, especially in mechanics, spatial acceleration can be understood in the context of motion dynamics of objects.
Carcel is a fashion brand that emphasizes ethical production and sustainability. Founded in 2015, the company is known for its commitment to providing fair working conditions for women in prison and utilizing high-quality, sustainable materials. Carcel produces a range of clothing items, often characterized by their minimalist and timeless designs. The brand aims to create a positive social impact by providing employment opportunities to incarcerated women, helping them to gain skills and earn an income.
Aggregate modulus is a term used in civil engineering, particularly in the context of concrete and asphalt mixtures. It refers to the overall modulus of elasticity of the aggregate component within these materials. The modulus of elasticity is a measure of a material's stiffness and its ability to deform elastically (i.e., non-permanently) when subjected to stress. In concrete, the aggregate modulus can influence the strength, durability, and overall performance of the finished concrete product.
Orbital angular momentum is a concept from quantum mechanics that describes the angular momentum of particles due to their motion around a central point. For free electrons, which are not bound to atoms, the orbital angular momentum is quantified using the quantum mechanical principles of angular momentum.
An electric field is a region around a charged particle or object within which other charged particles experience a force. It is a vector field that represents the force per unit charge that a positive test charge would experience at any point in space.
In algebraic geometry, a Schubert variety is a particular type of subvariety of a flag variety, which in turn is a parameter space for certain types of subspaces of a vector space. Schubert varieties arise in the study of intersection theory, representation theory, and several other areas of mathematics.
Susceptance is a measure of a circuit's ability to conduct alternating current (AC) in response to an applied voltage. It is the reciprocal of reactance (denoted as \(X\)) and is usually represented by the symbol \(B\). In electrical engineering, susceptance is typically used to describe the behavior of components such as capacitors and inductors, which store and release energy in an AC circuit.
Flux can refer to several different concepts depending on the context. Here are some of the most common interpretations: 1. **Physics and Engineering**: In physics, "flux" often refers to the rate of flow of a physical quantity through a surface. For instance, electromagnetic flux refers to the amount of electromagnetic field passing through a given area, while magnetic flux refers to the amount of magnetic field.
Quantum potential is a concept from quantum mechanics that arises in the context of de Broglie-Bohm theory, also known as pilot-wave theory. In this interpretation of quantum mechanics, particles have definite trajectories guided by a "pilot wave," which is described by the wave function. The quantum potential influences the motion of particles and is derived from the wave function of the system.
Wave theory encompasses a range of equations that describe the behavior and properties of waves in various contexts, such as mechanical waves, electromagnetic waves, and quantum waves. Here is a list of some fundamental equations and concepts in wave theory: ### 1.
Brian H. Murdoch is a scholar known for his work in medieval literature, particularly in the context of Middle English literature and the study of the historical and cultural aspects of texts from that period. He has published studies on various topics, including the influence of medieval works on contemporary literature, the role of manuscripts, and the textual analysis of specific works. His research often focuses on authors such as Geoffrey Chaucer and other significant figures from the medieval era.

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