Trace

Trace may refer to:

Mathematics

Computer science and electronics

Trace (album)

Trace is the first album by Son Volt, released in 1995. The band was formed the previous year by Jay Farrar after the breakup of the influential alt-country band Uncle Tupelo. The album reached #166 on the Billboard 200 album chart and received extremely favorable reviews. According to Allmusic, "Throughout Son Volt's debut, Trace, the group reworks classic honky tonk and rock & roll, adding a desperate, determined edge to their performances. Even when they rock out, there is a palpable sense of melancholy to Farrar's voice, which lends a poignancy to the music." The album was in the top 10 of Rolling Stone's 1995 critics' list.

"Drown" was a minor college and rock radio hit. It charted at #10 on the Billboard Mainstream Rock Tracks chart and #25 on the Billboard Modern Rock Tracks chart. It remains their only single to chart on either of the charts.

Track listing

All of the songs were written by Farrar except "Mystifies Me", written by Ronnie Wood.

Trace (linguistics)

In transformational grammar, a trace is an empty (phonologically null) category that occupies a position in the syntactic structure. In some theories of syntax, traces are used in the account of constructions such as wh-movement and passive. Traces are important theoretical devices in some approaches to syntax.

Concept

A trace is usually what occupies the empty (null) position in the syntactic structure that is left behind when some element undergoes movement. For example, in a case involving wh-movement, a structure like

is transformed into

the wh-word what being moved to the front of the sentence. In theories that posit traces, the position from which the wh-word was moved (in this case, the position of the direct object of eating), is considered to be occupied by a trace. In relevant linguistic texts, the trace may be denoted by a letter t; so the second sentence above may be written:

Traces are considered primarily in Chomskyan transformational grammar and its various developments. They are distinguished from other empty syntactic categories, commonly denoted PRO and pro. More details and examples can be found in the article on empty categories.

Environment variable

Environment variables are a set of dynamic named values that can affect the way running processes will behave on a computer.

They are part of the environment in which a process runs. For example, a running process can query the value of the TEMP environment variable to discover a suitable location to store temporary files, or the HOME or USERPROFILE variable to find the directory structure owned by the user running the process.

They were introduced in their modern form in 1979 with Version 7 Unix, so are included in all Unix operating system flavors and variants from that point onward including Linux and OS X. From PC DOS 2.0 in 1982, all succeeding Microsoft operating systems including Microsoft Windows, and OS/2 also have included them as a feature, although with somewhat different syntax, usage and standard variable names.

Details

In all Unix and Unix-like systems, each process has its own separate set of environment variables. By default, when a process is created, it inherits a duplicate environment of its parent process, except for explicit changes made by the parent when it creates the child. At the API level, these changes must be done between running fork and exec. Alternatively, from command shells such as bash, a user can change environment variables for a particular command invocation by indirectly invoking it via env or using the ENVIRONMENT_VARIABLE=VALUE <command> notation. All Unix operating system flavors, DOS, and Windows have environment variables; however, they do not all use the same variable names. A running program can access the values of environment variables for configuration purposes.

The Hour (newspaper)

The Hour is a daily newspaper published in Norwalk, Connecticut by The Hour Publishing Company. It serves the municipalities of Norwalk, Wilton, Westport, Weston and Stamford.

History

The newspaper was founded in 1871. It was published under the title The Evening Hour from 1895 into the 1900s, at which point it was renamed The Norwalk Hour. Some time after 1971, it became simply The Hour. The newspaper covers local news, business, sports, and entertainment, and as of April 2003, had a circulation of 16,070. In 2000, The Hour shifted from afternoon to morning deliveries.The Hour and its sister weekly newspaper, The Wilton Villager, and the Stamford Times offer three websites with updated news and information 24/7 and is achieving 1.5 million page views per month.

In 2003, competition between The Hour and its much larger Tribune Company–owned rival, The Advocate, came to a head. On May 15, The Stamford-base competitor began circulating a special Norwalk edition with significantly increased local coverage and a price that substantially undercut The Hour. The rivalry escalated to barbs traded on editorial pages.

24-hour clock

The 24-hour clock is the convention of time keeping in which the day runs from midnight to midnight and is divided into 24 hours, indicated by the hours passed since midnight, from 0 to 23. This system is the most commonly used time notation in the world today, and is used by international standard ISO 8601. In the practice of medicine, the 24-hour clock is generally used in documentation of care as it prevents any ambiguity as to when events occurred in a patient's medical history. It is popularly referred to as military time in the United States, English-speaking Canada, Russia, and a handful of other countries where the 12-hour clock is still dominant.

Description

A time of day is written in the 24-hour notation in the form hh:mm (for example 01:23) or hh:mm:ss (for example, 01:23:45), where hh (00 to 23) is the number of full hours that have passed since midnight, mm (00 to 59) is the number of full minutes that have passed since the last full hour, and ss (00 to 59) is the number of seconds since the last full minute. In the case of a leap second, the value of ss may extend to 60. A leading zero is added for numbers under 10. This zero is optional for the hours, but very commonly used in computer applications, where many specifications require it (for example, ISO 8601).