Data segment

In computing, a data segment (often denoted .data) is a portion of an object file or the corresponding virtual address space of a program that contains initialized static variables, that is, global variables and static local variables. The size of this segment is determined by the size of the values in the program's source code, and does not change at run time.

The data segment is read-write, since the values of variables can be altered at run time. This is in contrast to the read-only data segment (rodata segment or .rodata), which contains static constants rather than variables; it also contrasts to the code segment, also known as the text segment, which is read-only on many architectures. Uninitialized data, both variables and constants, is instead in the BSS segment.

Historically, to be able to support memory address spaces larger than the native size of the internal address register would allow, early CPUs implemented a system of segmentation whereby they would store a small set of indexes to use as offsets to certain areas. The Intel 8086 family of CPUs provided four segments: the code segment, the data segment, the stack segment and the extra segment. Each segment was placed at a specific location in memory by the software being executed and all instructions that operated on the data within those segments were performed relative to the start of that segment. This allowed a 16-bit address register, which would normally provide 64KiB (65536 bytes) of memory space, to access a 1MiB (1048576 bytes) address space.

DATA (band)

DATA were an electronic music band created in the late 1970s by Georg Kajanus, creator of such bands as Eclection, Sailor and Noir (with Tim Dry of the robotic/music duo Tik and Tok). After the break-up of Sailor in the late 1970s, Kajanus decided to experiment with electronic music and formed DATA, together with vocalists Francesca ("Frankie") and Phillipa ("Phil") Boulter, daughters of British singer John Boulter.

The classically orientated title track of DATA’s first album, Opera Electronica, was used as the theme music to the short film, Towers of Babel (1981), which was directed by Jonathan Lewis and starred Anna Quayle and Ken Campbell. Towers of Babel was nominated for a BAFTA award in 1982 and won the Silver Hugo Award for Best Short Film at the Chicago International Film Festival of the same year.

DATA released two more albums, the experimental 2-Time (1983) and the Country & Western-inspired electronica album Elegant Machinery (1985). The title of the last album was the inspiration for the name of Swedish pop synth group, elegant MACHINERY, formerly known as Pole Position.

Data (word)

The word data has generated considerable controversy on if it is a singular, uncountable noun, or should be treated as the plural of the now-rarely-used datum.

Usage in English

In one sense, data is the plural form of datum. Datum actually can also be a count noun with the plural datums (see usage in datum article) that can be used with cardinal numbers (e.g. "80 datums"); data (originally a Latin plural) is not used like a normal count noun with cardinal numbers and can be plural with such plural determiners as these and many or as a singular abstract mass noun with a verb in the singular form. Even when a very small quantity of data is referenced (one number, for example) the phrase piece of data is often used, as opposed to datum. The debate over appropriate usage continues, but "data" as a singular form is far more common.

In English, the word datum is still used in the general sense of "an item given". In cartography, geography, nuclear magnetic resonance and technical drawing it is often used to refer to a single specific reference datum from which distances to all other data are measured. Any measurement or result is a datum, though data point is now far more common.

Athens

Athens (/ˈæθᵻnz/;Modern Greek: Αθήνα, Athína [[aˈθina]], Ancient Greek: Ἀθῆναι Athēnai), is the capital and largest city of Greece. Athens dominates the Attica region and is one of the world's oldest cities, with its recorded history spanning around 3,400 years, and the earliest human presence around the 11th–7th centuries BC.Classical Athens was a powerful city-state that emerged in conjunction with the seagoing development of the port of Piraeus. A centre for the arts, learning and philosophy, home of Plato's Academy and Aristotle's Lyceum, it is widely referred to as the cradle of Western civilization and the birthplace of democracy, largely because of its cultural and political impact on the European continent and in particular the Romans. In modern times, Athens is a large cosmopolitan metropolis and central to economic, financial, industrial, maritime, political and cultural life in Greece. In 2015, Athens was ranked the world's 29th richest city by purchasing power and the 67th most expensive in a UBS study.

OpenAthens

OpenAthens is an identity and access management service, supplied by Eduserv, a not-for-profit information technology services company based in United Kingdom. Solutions for Identity provider(IdP) organisations are: OpenAthens Managed Directory (OpenAthens MD), where individual usernames are held in the cloud, OpenAthens Local Authentication (OpenAthens LA) where individual usernames are held locally, integration with ADFS or LDAP or integration of any third party service supporting SAML where usernames can be held in the cloud, locally or both. OpenAthens SP software for Service Providers supports multiple platforms and federations.

History

With origins in the University of Bath initiative to reduce IT procurement costs for itself and other universities, the Athens project was conceived in 1996. Spun off from Bath University through the vehicle of charitable status, Eduserv was established as a not for profit organisation in 1999.

The service was originally named Athena after the Greek goddess of knowledge and learning. It is rumoured that the name change was partially caused by a common typo, but it was actually due to the name Athena being already trademarked (EU000204735). Launching as 'Athens' in 1997 (UK00002153200), the name has since been changed to 'OpenAthens' in 2007 and renewed as such again in 2015 (EU013713821).

Athens, Georgia

Athens (formally known as Athens-Clarke County) is a consolidated city–county in the U.S. state of Georgia, in the northeastern part of the state, comprising the former city of Athens proper (the county seat) and Clarke County. The University of Georgia, the state's flagship public research university, is located in this college town, and contributed to its initial growth. In 1991, after a vote the preceding year, the original city abandoned its charter to form a unified government with Clarke County, referred to jointly as Athens-Clarke County. As of the 2010 census, the consolidated city-county (including all of Athens-Clarke County except Winterville and a portion of Bogart) had a total population of 115,452; all of Clarke County had a population of 116,714. Athens is the sixth-largest city in Georgia, and the principal city of the Athens-Clarke County, Georgia Metropolitan Statistical Area, which had a population of 192,541 as of the 2010 census. Athens-Clarke County has the smallest geographical area of a county in Georgia.