This is a list of notable and commonly used emoticons, or textual portrayals of a writer's moods or facial expressions in the form of icons. Originally, these icons consisted of ASCII art, and later, Shift_JIS art and Unicode art. In recent times, graphical icons, both static and animated, have joined the traditional text-based emoticons; these are commonly known as emoji.
Emoticons can generally be divided into three groups: Western (mainly from America and Europe) or horizontal (though not all are in that orientation); Eastern or vertical (mainly from east Asia); and 2channel style (originally...
Hack may refer to:
== Arts, entertainment, and media ==
=== Games ===
Hack (Unix video game), written in 1982
.hack, a Japanese multimedia franchise
.hack (video game series), a four-game series for the PlayStation 2
Hack and slash, a genre of video game or a type of gameplay
=== Music ===
Hack (album), a 1990 album by Information Society
Hack, an album by the Ed Kemper Trio
=== Other uses in arts, entertainment, and media ===
Hack (comedy), a joke, or premise for a joke, that is considered obvious, frequently used, and/or stolen
Hack writer or hack, a writer or journalist who prod...
Ezra Matthew Miller (born September 30, 1992) is an American actor and singer. He made his feature film debut in the film Afterschool (2008). He starred as the title character in the drama We Need to Talk About Kevin (2011) and co-starred in the film adaptation of The Perks of Being a Wallflower (2012). In 2015, he co-starred in the drama The Stanford Prison Experiment and in the comedy Trainwreck. He plays Barry Allen / The Flash in the DC Extended Universe where he first appeared as Flash in Batman v Superman: Dawn of Justice (2016) and then in Justice League (film) and also played Creden...
A regulatory sequence is a segment of a nucleic acid molecule which is capable of increasing or decreasing the expression of specific genes within an organism. Regulation of gene expression is an essential feature of all living organisms and viruses.
== Description ==
In DNA, regulation of gene expression normally happens at the level of RNA biosynthesis (transcription), and is accomplished through the sequence-specific binding of proteins (transcription factors) that activate or inhibit transcription. Transcription factors may act as activators, repressors, or both. Repressors often act ...
In theoretical physics, quantum field theory (QFT) is the theoretical framework for constructing quantum mechanical models of subatomic particles in particle physics and quasiparticles in condensed matter physics. It is a set of notions and mathematical tools that combines classical fields, special relativity, and quantum mechanics, and, when combined with the cluster decomposition principle, it may be the only way to do so, while retaining the ideas of quantum point particles and locality. QFT was historically widely believed to be truly fundamental. It is now believed, primarily due to th...
Albert Einstein (14 March 1879 – 18 April 1955) was a German-born theoretical physicist. Einstein developed the theory of relativity, one of the two pillars of modern physics (alongside quantum mechanics). Einstein's work is also known for its influence on the philosophy of science. Einstein is best known by the general public for his mass–energy equivalence formula E = mc2 (which has been dubbed "the world's most famous equation"). He received the 1921 Nobel Prize in Physics "for his services to theoretical physics, and especially for his discovery of the law of the photoelectric effect", a pivotal...
rm (short for remove) is a basic UNIX command used to remove objects such as files, directories, device nodes, symbolic links, and so on from the filesystem. To be more precise, rm removes references to objects from the filesystem, where those objects might have had multiple references (for example, a file with two different names), and the objects themselves are discarded only when all references have been removed and no programs still have open handles to the objects.
This allows for scenarios where a program can open a file, immediately remove it from the filesystem, and then use it for temporary...
BusyBox is software that provides several stripped-down Unix tools in a single executable file. It runs in a variety of POSIX environments such as Linux, Android, and FreeBSD, although many of the tools it provides are designed to work with interfaces provided by the Linux kernel. It was specifically created for embedded operating systems with very limited resources. The authors dubbed it "The Swiss Army knife of Embedded Linux", as the single executable replaces basic functions of more than 300 common commands. It is released as free software under the terms of the GNU General Public License v2...
In cosmology, the cosmological constant (usually denoted by the Greek capital letter lambda: Λ) is the value of the energy density of the vacuum of space. It was originally introduced by Albert Einstein in 1917 as an addition to his theory of general relativity to "hold back gravity" and achieve a static universe, which was the accepted view at the time. Einstein abandoned the concept after Hubble's 1929 discovery that all galaxies outside the Local Group (the group that contains the Milky Way Galaxy) are moving away from each other, implying an overall expanding universe. From 1929 until the early...
