Home directory

A home directory is a file system directory on a multi-user operating system containing files for a given user of the system. The specifics of the home directory (such as its name and location) is defined by the operating system involved; for example, Windows systems between 2000 and 2003 keep home directories in a folder called Documents and Settings.

Description

A user's home directory is intended to contain that user's files; including text documents, music, pictures or videos, etc. It may also include their configuration files of preferred settings for any software they have used there and might have tailored to their liking: web browser bookmarks, favorite desktop wallpaper and themes, passwords to any external services accessed via a given software, etc. The user can install executable software in this directory, but it will only be available to users with permission to this directory. The home directory can be organized further with the use of sub-directories.

The content of a user's home directory is protected by file system permissions, and by default is accessible to all authenticated users and administrators. Any other user that has been granted administrator privileges has authority to access any protected location on the filesystem including other users home directories.

Home (Deep Blue Something album)

Home is the second album by alternative rock band Deep Blue Something. It was originally released by RainMaker Records in 1994 and re-released on Interscope in 1995.

Track listing

All songs written by Todd Pipes, except where noted.

B-Sides:

Charts

Personnel

Band Members

Home (Stephanie Mills album)

Home is a studio album by Stephanie Mills. It was released June 26, 1989 on MCA Records.

Track listing

Charts

References

External links

SAGEM Sigma 30

The Sigma 30 is an inertial navigation system produced by SAGEM for use with artillery applications including howitzers, multiple rocket launchers, mortars and light guns. It is currently produced for more than 25 international programs, including France (CAESAR, 2R2M, MLRS), Sweden (FH77 BD, Archer), India (Pinaka MBRL),Polish PT-91M tank (build for Malaysia) and the United States (topographic survey).

Sigma 30 can also be integrated in more complex systems (Positioning and Azimuth Determination System).

References

External links

Sigma-1 receptor

The sigma-1 receptor (σ₁R), one of two sigma receptor subtypes, is a chaperone protein at the endoplasmic reticulum (ER) that modulates calcium signaling through the IP3 receptor. In humans, the σ₁ receptor is encoded by the SIGMAR1 gene.

The σ₁ receptor is a transmembrane protein expressed in many different tissue types. It is particularly concentrated in certain regions of the central nervous system. It has been implicated in myriad phenomena, including cardiovascular function, schizophrenia, clinical depression, the effects of cocaine abuse, and cancer. Much is known about the binding affinity of hundreds of synthetic compounds to the σ₁ receptor.

An endogenous ligand for the σ₁ receptor has yet to be conclusively identified, but tryptaminergic trace amines, as well as neuroactive steroids such as dehydroepiandrosterone (DHEA) and pregnenolone all activate the receptor.

Characteristics

The σ₁ receptor is defined by its unique pharmacological profile. In 1976 Martin reported that the effects of N-allylnormetazocine (SKF-10,047) could not be due to activity at the μ and κ receptors (named from the first letter of their selective ligands morphine and ketazocine, respectively) and a new type of opioid receptor was proposed; σ (from the first letter of SKF-10,047). However, ligands acting at this new “opioid” receptor were not blocked by the classical opioid antagonists naloxone and naltrexone. Consequently, the opioid classification was eventually dropped and the receptor was later termed the σ₁ receptor. It was found to have affinity for the (+)-stereoisomers of several benzomorphans (e.g., (+)-pentazocine and (+)-cyclazocine), various structurally and pharmacologically distinct psychoactive chemicals such as haloperidol and cocaine, and neuroactive steroids like progesterone.

Sigma 7

Sigma 7 may refer to: