OSAC Lexicon

A behavioral response involving the autonomic nervous system (e.g., fight or flight) in the presence of real or imagined danger involving avoidance and, or withdrawal under circumstances where the canine is distressed.

A behavioral response involving the autonomic nervous system (e.g., fight or flight) in the presence of actual or perceived danger involving avoidance, withdrawal or engagement via agonistic behavior.

Wear pattern where tire tread ribs are worn lower/smoother on one side and higher/sharper on the other side.

in facial identification and image analysis, an observable class or individual characteristic.

the fabric portion of some pressure sensitive adhesive tapes; also referred to as scrim.

in video analysis, a set of odd or even scan lines comprising one half of an interlaced video frame. Discussion—For interlaced video, the scanning pattern is divided into two sets of spaced lines (odd and even) that are displayed sequentially. Each set of lines is called a field, and the interlaced set of the two sets of lines is a frame.

The limited disassembly of a firearm, generally without the use of tools, and usually into its subassemblies.

Testing the operating condition of a firearm without ammunition.

The subconscious impulse of a canine to merely measure physical prowess with an opponent.

The innate impulse of a canine to merely measure physical prowess with an opponent.

in textiles, a continuous fiber of extremely long length.

in computer forensics, a collection of information logically grouped into a single object and referenced by an identifier, such as a filename.

in computer forensics, a standard structure by which data is organized in a file for a specific purpose.

in computer forensics, the data within a file that contains identifying information about the file and possibly metadata with information about the file contents.

in computer forensics, the data between the logical end of a file and the end of the last storage unit for that file.

in computer forensics, an identifier used to uniquely identify a file object within a directory object in a filesystem.

in computer forensics, a specified method for naming, storing, organizing, and accessing files on logical volumes.

See weft yarns (filling).

an inorganic material that is added to a tape to modify a physical property or reduce cost.

A behavior that a canine has been trained to exhibit in the presence of a target odor/scent source. This behavior may be either passive (sit, stare, down, point, etc.) or active (bite, bark, scratch, jump, etc.). Also known as a trained final response. (See alert, indication.)

A behavior that a canine has been trained to exhibit in the presence of a target odor/scent source. This behavior may be either passive (sit, stare, down, point, etc.) or active (bite, bark, scratch, etc.). Also known as a trained final response. NOTE For EDC, EDC w/PSC, and PSC refer to 4.2.1.3.

A behavior that a canine has been trained to exhibit in the presence of a target odor/scent source. This behavior may be either passive (sit, stare, down, point, etc.) or active (bite, bark, scratch, etc.). Also known as a trained final response.

A behavior that a canine has been trained to exhibit in the presence of a target scent source. This behavior may be either passive (sit, stare, down, point, etc.) or active (bite, bark, scratch, jump, etc.). Also known as a trained final response. (See 3.4 alert.)

A behavior that a canine has been trained to exhibit in the presence of a target scent source. This behavior may be either passive (sit, stare, down, point, etc.) or active (bite, bark, scratch, jump, etc.). Also known as a trained final response. (See 3.4 alert.)

A behavior that a canine has been trained to exhibit in the presence of a target scent source. This behavior may be either passive (sit, stare, down, point, etc.) or active (bite, bark, scratch, jump, etc.). Also known as a trained final response. (See 3.4 alert.)

An image or impression of the friction ridges of all or any part of a finger or thumb.

The time in minutes, determined under specific laboratory conditions, at which the stud or joist in contact with the exposed protective membrane in a protected combustible assembly reaches an average temperature rise of 121C (250F) or an individual temperature rise of 163C (325F) as measured behind the protective membrane nearest the fire on the plane of the wood.

a manufactured product ready for use.

A rapid oxidation process, which is an exothermic chemical reaction, resulting in the evolution of light and heat in varying intensities.

a rapid oxidation process, which is a chemical reaction resulting in the evolution of light and heat in varying intensities (see combustion).

The process of determining the origin, cause, development, responsibility, and, when required, a failure analysis of a fire or explosion.

The process of determining the origin, cause, development, responsibility, and, when required, a failure analysis of a fire or explosion.

The boundary of fire effects within a scene in which the area of origin will be located. The fire area is characterized by identifying the border between damaged and undamaged areas, which are distinguishable by fire effects and patterns created by flame, heat, and smoke.

The circumstances, conditions, or agencies that bring together a fuel, ignition source, and oxidizer (such as air or oxygen) resulting in a fire or a combustion explosion.

The study of chemical processes that occur in fires including changes of state, decomposition, and combustion.

The study of chemical processes that occur in fires including changes in state, decomposition, and combustion.

material of interest at a fire scene that can be collected by an investigator as evidence to analyze.

the science related to the examination of fire debris samples performed to potentially detect and identify ignitable liquid residues (ILR).

The detailed study of how chemistry, fire science, and the engineering disciplines of fluid mechanics and heat transfer interact to influence fire behavior.

The detailed study of how chemistry, fire science, and the engineering disciplines of fluid mechanics and heat transfer interact to influence fire behavior.

The observable or measurable changes in or on a material as a result of a fire.

Any situation, process, material, or condition that can cause a fire or explosion or that can provide a ready fuel supply to augment the spread or intensity of a fire or explosion, all of which pose a threat to life or property.

The process of determining the origin, cause, and development of a fire or explosion.

The process of determining the origin, cause, and development of a fire or explosion

An individual who has demonstrated the skills and knowledge necessary to conduct, coordinate, and complete a fire investigation.

An individual who has demonstrated the skills and knowledge necessary to conduct, coordinate, and complete a fire investigation.

A structured approach to predicting one or more effects of a fire.

The physical changes, or identifiable shapes, formed by a fire effect or group of fire effects.

See fire spread.

Systems, devices, and equipment used to detect a fire and its by-products, actuate an alarm, or suppress or control a fire and its by-products, or any combination thereof.