Poll

Poll, polled or polling may refer to:

Figurative head counts

Mathematics, science, and technology

Unix

Unix (trademarked as UNIX) is a family of multitasking, multiuser computer operating systems that derive from the original AT&T Unix, developed in the 1970s at the Bell Labs research center by Ken Thompson, Dennis Ritchie, and others.

Initially intended for use inside the Bell System, AT&T licensed Unix to outside parties from the late 1970s, leading to a variety of both academic and commercial variants of Unix from vendors such as the University of California, Berkeley (BSD), Microsoft (Xenix), IBM (AIX) and Sun Microsystems (Solaris). AT&T finally sold its rights in Unix to Novell in the early 1990s, which then sold its Unix business to the Santa Cruz Operation (SCO) in 1995, but the UNIX trademark passed to the industry standards consortium The Open Group, which allows the use of the mark for certified operating systems compliant with the Single UNIX Specification (SUS). Among these is Apple's OS X, which is the Unix version with the largest installed base as of 2014.

From the power user's or programmer's perspective, Unix systems are characterized by a modular design that is sometimes called the "Unix philosophy", meaning that the operating system provides a set of simple tools that each perform a limited, well-defined function, with a unified filesystem as the main means of communication and a shell scripting and command language to combine the tools to perform complex workflows. Aside from the modular design, Unix also distinguishes itself from its predecessors as the first portable operating system: almost the entire operating system is written in the C programming language that allowed Unix to reach numerous platforms.

Single UNIX Specification

The Single UNIX Specification (SUS) is the collective name of a family of standards for computer operating systems, compliance with which is required to qualify for to use the "UNIX" trademark. The core specifications of the SUS are developed and maintained by the Austin Group, which is a joint working group of IEEE, ISO JTC 1 SC22 and The Open Group. If an operating system is submitted to The Open Group for certification, and passes conformance tests, then it is termed to be compliant with a UNIX standard such as UNIX 98 or UNIX 03.

Very few BSD and Linux-based operating systems are submitted for compliance with the Single UNIX Specification, although system developers generally aim for compliance with POSIX standards, which form the core of the Single UNIX Specification.

History

1980s: Motivation

The SUS emerged from a mid-1980s project to standardize operating system interfaces for software designed for variants of the Unix operating system. The need for standardization arose because enterprises using computers wanted to be able to develop programs that could be used on the computer systems of different manufacturers without reimplementing the programs. Unix was selected as the basis for a standard system interface partly because it was manufacturer-neutral.

Year 2038 problem

The Year 2038 problem is an issue for computing and data storage situations in which time values are stored or calculated as a signed 32-bit integer, and this number is interpreted as the number of seconds since 00:00:00 UTC on 1 January 1970 ("the epoch"). Such implementations cannot encode times after 03:14:07 UTC on 19 January 2038 (21 years' time), a problem similar to but not entirely analogous to the "Y2K problem" (also known as the "Millennium Bug"), in which 2-digit values representing the number of years since 1900 could not encode the year 2000 or later. Most 32-bit Unix-like systems store and manipulate time in this "Unix time" format, so the year 2038 problem is sometimes referred to as the "Unix Millennium Bug" by association.

Technical cause

The latest time that can be represented in Unix's signed 32-bit integer time format is 03:14:07 UTC on Tuesday, 19 January 2038 (2,147,483,647 seconds after 1 January 1970). Times beyond that will "wrap around" and be stored internally as a negative number, which these systems will interpret as having occurred on 13 December 1901 rather than 19 January 2038. This is caused by integer overflow. The counter "runs out" of usable bits, "increments" the sign bit instead, and reports a maximally negative number (continuing to count up, toward zero). Resulting erroneous calculations on such systems are likely to cause problems for users and other relying parties.

Johan Adam Pollich

Johan Adam Pollich or Johann (1 January 1741, Kaiserslautern - 24 February 1780) was a German doctor, botanist and entomologist.

He studied medicine in Strasbourg, and following graduation he practiced medicine for a short period of time. From 1764 onward he devoted his energies to natural sciences. In 1776 he published the first volume of Historia plantarum in Palatinatu, followed by volumes II & III the next year. Because of its excellent descriptions of plants, this work was highly praised by Pollich's contemporaries.

Works

Poll, Cologne

Poll (German: Köln-Poll [ˈkʰœln ˈpʰɔl], Colognian: Poll [ˈpɔɫˑ]) is a quarter of the city of Cologne, in North Rhine-Westphalia, Germany. It is part of the borough of Porz.

Position

Polls natural border to the west is the Rhine. To the south it is the Bundesautobahn 4 and the Cologne Rodenkirchen Bridge, to the east Bundesautobahn 559 and to the north the railroad embankment leading to the Südbrücke, which is crossing the Rhine.

History

Poll was already inhabited during the New Stone Age; etymologically the name originates in a meaning like Swamp. The first documentary mentioning of Poll was on 1. April 1003 by monks from nearby Deutz Abbey, which was part of the Electorate of Cologne. The village Poll was suburbanized in 1889 and became a quarter of Cologne. Since 1975 it is part of city district Porz.

Transportation

Poll is served by the Bundesautobahn 4, Bundesautobahn 559 and three light rail stations of the Cologne Stadtbahn line 7. The Cologne Rodenkirchen Bridge connects Poll with Rodenkirchen. Destroyed due to an airstrike on 14 January 1945 it was rebuilt from 1952 to 1954. The Südbrücke was also destroyed in January 1945 and is in service again since 1950. This railway bridge is used mainly for goods traffic.

The Poll Diaries

The Poll Diaries (German: Poll) is a 2010 German drama film directed by Chris Kraus.The Poll Diaries is the most expensive film that has ever been made in Estonia.

Cast

References

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