Mem (also spelled Meem or Mim) is the thirteenth letter of the Semitic abjads, including Phoenician Mēm , Hebrew Mēm מ, Aramaic Mem , Syriac Mīm ܡܡ, and Arabic Mīm م. Its value is [m].

The Phoenician letter gave rise to the Greek Mu (Μ), Etruscan , Latin M, and Cyrillic М.

Origins

Mem is believed to derive from the Egyptian hieroglyphic symbol for water,

which had been simplified by the Phoenicians and named after their word for water, mem (), ultimately coming from Proto-Semitic *maʾ-/*may-.

Hebrew Mem

Hebrew spelling: מֵם

Hebrew pronunciation

Mem represents a bilabial nasal [m].

Variations on written form/pronunciation

In Hebrew, Mem, like Kaph, Nun, Pe, and Tzadi, has a final form, used at the end of words: its shape changes from מ to ם.

Significance

In gematria, Mem represents the number 40 in both the Standard and Mispar Gadol Methods of Gematria; However, (mem sofit) final mem's value is 40 in the Standard Method and 600 in the Mispar Gadol method. The Standard Method adds the values of Tav and Resh (400+200) to denote the value of mem sofit.

Mem is a given name. Notable people with the name include:

For other meanings, see Mem (disambiguation)

In Computational complexity theory, computing efficiency, Combinatorial optimization, Supercomputing, computational cost (Algorithmic efficiency) and other computational metrics, MEMS is a measurement unit for the number of memory accesses used or needed by a process, function, instruction set, algorithm or data structure.

Example usage: "A typical search tree in a (10 x 10 Sudoku or Latin square) requires a node of about 75 mems (memory accesses) for processing, to check validity. Therefore the total running time on a modern processor would be roughly the time needed to perform 7020200000000000000♠2×10²⁰ mems." (Donald Knuth, 2011, The Art of Computer Programming, Volume 4A, p. 6).

Reducing MEMS as a speed and efficiency enhancement is not a linear benefit, as it trades off increases in ordinary operations costs.

PFOR Compression

This optimization technique also is called PForDelta

Although lossless compression methods like Rice, Golomb and PFOR are most often associated with signal processing codecs, the ability to optimize binary integers also adds relevance in reducing MEMS tradeoffs vs. operations. (See Golomb coding for details).

Italian may refer to:

Other uses

See also

The Ping-Pong virus (also called Boot, Bouncing Ball, Bouncing Dot, Italian, Italian-A or VeraCruz) is a boot sector virus discovered on March 1, 1988 at the University of Turin in Italy. It was likely the most common and best known boot sector virus until outnumbered by the Stoned virus.

Replication method

Computers could be contaminated by an infected diskette, showing up as a 1 KB bad cluster (the last one on the disk, used by the virus to store the original boot sector) to most disk checking programs. Due to being labelled as bad cluster, MS-DOS will avoid overwriting it. It infects disks on every active drive and will even infect non-bootable partitions on the hard disk. Upon infection, the virus becomes memory resident.

Effect

The virus would become active if a disk access is made exactly on the half hour and start to show a small "ball" bouncing around the screen in both text mode (the ASCII bullet character "•") and graphical mode. No serious damage is incurred by the virus except on '286 machines (and also V20, '386 and '486), which would sometimes crash during the ball's appearance on the screen. The cause of this crash is the "MOV CS,AX" instruction, which only exists on '88 and '86 processors. For this reason, users of machines at risk were advised to save their work and reboot, since this is the only way to temporarily get rid of the virus.

Italy is home to some of the oldest wine-producing regions in the world, and Italian wines are known worldwide for their broad variety. Italy, closely followed by France, is the world’s largest wine producer by volume. Its contribution is about 45–50 million hl per year, and represents about ⅓ of global production.Italian wine is exported around the world and is also extremely popular in Italy: Italians rank fifth on the world wine consumption list by volume with 42 litres per capita consumption. Grapes are grown in almost every region of the country and there are more than one million vineyards under cultivation.

Etruscans and Greek settlers produced wine in Italy before the Romans started their own vineyards in the 2nd century B.C. Roman grape-growing and winemaking was prolific and well-organized, pioneering large-scale production and storage techniques like barrel-making and bottling.

History

Although vines had been cultivated from the wild Vitis vinifera grape for millennia, it wasn't until the Greek colonization that wine-making flourished. Viticulture was introduced into Sicily and southern Italy by the Mycenaean Greeks, and was well established when the extensive Greek colonization transpired around 800 BC. It was during the Roman defeat of the Carthaginians (acknowledged masters of wine-making) in the 2nd century BC that Italian wine production began to further flourish. Large-scale, slave-run plantations sprang up in many coastal areas and spread to such an extent that, in AD 92, emperor Domitian was forced to destroy a great number of vineyards in order to free up fertile land for food production.