Hip hop music

Hip hop music, also called hip-hop or rap music, is a music genre formed in the United States in the 1970s that consists of a stylized rhythmic music that commonly accompanies rapping, a rhythmic and rhyming speech that is chanted. It developed as part of hip hop culture, a subculture defined by four key stylistic elements: MCing/rapping, DJing/scratching, break dancing, and graffiti writing. Other elements include sampling (or synthesis), and beatboxing.

While often used to refer to rapping, "hip hop" more properly denotes the practice of the entire subculture. The term hip hop music is sometimes used synonymously with the term rap music, though rapping is not a required component of hip hop music; the genre may also incorporate other elements of hip hop culture, including DJing, turntablism, and scratching, beatboxing, and instrumental tracks.

Rap GTP-binding protein

Rap GTP-binding protein also known as Ras-related proteins or simply RAP is a type of small GTPase, similar in structure to Ras.

These proteins share approximately 50% amino acid identity with the classical RAS proteins and have numerous structural features in common. The most striking difference between RAP proteins and RAS proteins resides in their 61st amino acid: glutamine in RAS is replaced by threonine in RAP proteins. RAP counteracts the mitogenic function of RAS because it can interact with RAS GAPs and RAF in a competitive manner.

Family members

Human genes that encode Ras-related proteins include:

References

External links

This article incorporates text from the United States National Library of Medicine, which is in the public domain.

RAP

Rap may refer to:

Rap may refer to:

Rapper may refer to:

RAP may refer to:

Unsigned

Unsigned can refer to:

Signedness

In computing, signedness is a property of data types representing numbers in computer programs. A numeric variable is signed if it can represent both positive and negative numbers, and unsigned if it can only represent non-negative numbers (zero or positive numbers).

As signed numbers can represent negative numbers, they lose a range of positive numbers that can only be represented with unsigned numbers of the same size (in bits) because half the possible values are non-positive values (so if an 8-bit is signed, positive unsigned values 128 to 255 are gone while -128 to 127 are present). Unsigned variables can dedicate all the possible values to the positive number range.

For example, a two's complement signed 16-bit integer can hold the values −32768 to 32767 inclusively, while an unsigned 16 bit integer can hold the values 0 to 65535. For this sign representation method, the leftmost bit (most significant bit) denotes whether the value is positive or negative (0 for positive, 1 for negative).

Unsigned highway

An unsigned highway is a highway that has been assigned a route number, but does not bear road markings that would conventionally be used to identify the route with that number. Depending on the policy of the agency that maintains the highway, the route may instead be signed a different designation from its actual number, with small inventory markers for internal use, or with nothing at all.

Background

Routes are often left unsigned when they are extremely short. Roads that serve as a short connector to a major highway are sometimes signed to show the connection to the major road, rather than the road's actual designation.

Some highway maintenance agencies have separate numbering systems for their minor and major routes. To avoid confusion from having multiple highways in the same area with the same number, often the minor routes will be signed differently, or not signed at all. Other agencies use multiple numbering systems for the same set of routes; one number used for public signs and an internal numbering system for inventory purposes. In this case a highway may be unsigned as it has only been assigned an inventory designation, but not assigned a number in the public system.