The theory of cryptography encompasses the study of techniques for securing communication and data from adversaries and unauthorized access. At its core, cryptography is concerned with methods of ensuring confidentiality, integrity, authenticity, and non-repudiation of information. ### Key Concepts in Cryptography: 1. **Confidentiality**: Ensuring that information is accessible only to those authorized to have access. This is often achieved through encryption, which transforms readable data into a format that is unreadable without a key.
Adaptive Redaction refers to a technology or process used to automatically identify and redact sensitive information within documents or datasets. This approach utilizes artificial intelligence (AI), machine learning, and natural language processing to adaptively recognize various types of sensitive data, such as personally identifiable information (PII), financial details, or confidential business information.
Bitcoin Gold (BTG) is a cryptocurrency that was created in October 2017 as a fork of the original Bitcoin (BTC) blockchain. The primary motivation for the creation of Bitcoin Gold was to make mining more accessible to the average person and to decentralize the mining process.
The "crypto naming controversy" generally refers to various issues and debates surrounding the naming conventions of cryptocurrencies, blockchain projects, and related technologies. Here are some key points that encompass the controversies: 1. **Trademark Disputes**: Many crypto projects have similar or identical names, leading to confusion among users. This can result in trademark disputes where creators of a newer project might be accused of infringing on the intellectual property of an established project.
A sphygmomanometer is a medical device used to measure blood pressure. It typically consists of an inflatable cuff that is wrapped around the arm, a measuring unit (manometer) that indicates the pressure, and a means to inflate the cuff, which can be either a hand pump or an automatic electronic mechanism.
Color appearance phenomena refer to the ways in which the perception of color can change based on various factors, including lighting conditions, context, surrounding colors, and the medium in which the colors are viewed. These phenomena are often studied in fields such as color science, psychology, and vision science. Some key concepts associated with color appearance phenomena include: 1. **Color Contrast**: How the color of an object is perceived in relation to surrounding colors.
The chemical bonding model is a theoretical framework used to explain how atoms combine to form molecules and compounds. It describes the interactions that lead to the formation of chemical bonds, which can be categorized primarily into three types: ionic bonds, covalent bonds, and metallic bonds. Each type of bond has distinctive characteristics based on the nature of the atoms involved and how they achieve stability. 1. **Ionic Bonding**: - Ionic bonds form between atoms that transfer electrons from one to another.
A dihydrogen bond is a type of non-covalent interaction that occurs between molecules where a hydrogen atom covalently bonded to an electronegative atom (such as oxygen, nitrogen, or fluorine) interacts with another hydrogen atom that is covalently bonded to a similar electronegative atom in a different molecule. This interaction is crucial in some specific molecular arrangements, particularly in the context of hydrogen-rich compounds or in environments where multiple hydrogen bonds can influence the molecular structure.
Electron deficiency refers to a state in which a molecule or atom has fewer electrons than is typically expected, resulting in a deficiency of electron density around a particular center or atom. This concept is crucial in several areas of chemistry, including coordination chemistry, organometallic chemistry, and the study of reaction mechanisms.
The mesomeric effect, also known as resonance effect, refers to the delocalization of electrons within a molecule that occurs through the overlap of p-orbitals. This effect contributes to the stability and reactivity of molecules by allowing the distribution of electron density across multiple atoms rather than being localized between two specific atoms.
Metalligand multiple bonds refer to the formation of multiple bonds between a metal center (often a transition metal) and a ligand, which is a molecule or ion that can donate at least one pair of electrons to the metal. The most common types of multiple bonds in coordination chemistry are double and even triple bonds, which can occur in specific metal-ligand complexes. ### 1.
A pi bond (π bond) is a type of covalent bond that occurs when two atomic orbitals overlap in such a way that there is a region of electron density above and below the axis connecting the two nuclei of the bonding atoms. Pi bonds are typically formed between p orbitals that are aligned parallel to each other. Pi bonds usually occur in conjunction with sigma bonds (σ bonds).
A quintuple bond is a type of chemical bond involving the sharing of five pairs of electrons between two atoms. This means that there are five single bonds worth of electron pairs being shared. Quintuple bonds are relatively rare and most commonly observed in certain transition metal complexes, especially those involving heavier transition metals. In terms of examples, compounds like some metal carbides may exhibit quintuple bonds, such as in the case of the carbon-carbon bond found in certain metal systems.
Starch gelatinization is a process that involves the transformation of starch granules when they are heated in the presence of water. This process is critical in cooking and food preparation, as it affects the texture, viscosity, and digestibility of starch-containing foods. Here’s how the process works: 1. **Heating**: When starch granules are heated in water, they begin to absorb moisture and swell.
Nuclear interdisciplinary topics refer to areas of study that combine principles from various disciplines to understand and address issues related to nuclear science and technology. These topics often involve the intersection of fields such as physics, engineering, biology, environmental science, medicine, and policy, reflecting the complex and multifaceted nature of nuclear-related issues.

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