| HFHV | high frequency, high volume |
|---|---|
| HFO | high-frequency oscillator; high-frequency oscillatory [ventilation] |
| HFT | high-frequency transduction; high-frequency transfer |
| HIHA | high impulsiveness, high anxiety |
| HPF | heparin-precipitable fraction; hepatic plasma flow; high-pass filter; high-power field [microscope];... |
| control plot | A plot in which no vegetation will be cut and natural succession will occur. A control plot serves as a baseline to compare other treatments (Early, Mid and Late Seral). (05 Dec 1998) |
|---|---|
| control release suture | Eyeless suture with thread attached to needle such that the two separate when tension is applied to the thread. (05 Mar 2000) |
| control syringe | A type of Luer-Lok syringe with thumb and finger rings attached to the proximal end of the barrel and to the tip of the plunger, allowing operation of the syringe with one hand. Synonym: ring syringe. (05 Mar 2000) |
| poison control centres | Facilities which provide information concerning poisons and treatment of poisoning in emergencies. (12 Dec 1998) |
| cost control | The containment, regulation, or restraint of costs. Costs are said to be contained when the value of resources committed to an activity is not considered excessive. This determination is frequently subjective and dependent upon the specific geographic area of the activity being measured. (12 Dec 1998) |
| population control | Includes mechanisms or programs which control the numbers of individuals in a population of humans or animals. (12 Dec 1998) |
| positive control | Mechanism for gene regulation that requires that a regulatory protein must interact with some region of the gene before transcription can be activated. (18 Nov 1997) |
| self-control | 1. Self-regulation of one's behaviour in accordance with personal beliefs, goals, attitudes and societal expectations. 2. Use by an individual of active coping strategies to deal with problem situations, in contrast to passive conditioning strategies which do things to the individual and require no action by the person. (05 Mar 2000) |
| social control | The influence on the behaviour of a person exerted by other persons or by society as a whole; e.g., through appropriate social norms, ostracism, or the criminal law. (05 Mar 2000) |
| social control, formal | Control which is exerted by the more stable organizations of society, such as established institutions and the law. They are ordinarily embodied in definite codes, usually written. (12 Dec 1998) |
| social control, informal | Those forms of control which are exerted in less concrete and tangible ways, as through folkways, mores, conventions, and public sentiment. (12 Dec 1998) |
| social control policies | Decisions for determining and guiding present and future objectives from among alternatives. (12 Dec 1998) |
| negative control | Regulation of an enzyme activity by an inhibitor of that enzyme or regulation of a protein by repression of transcription. (05 Mar 2000) |
| stimulus control | The use of conditioning techniques to bring the target behaviour of an individual under environmental control. See: classical conditioning. (05 Mar 2000) |
| delusion of control | Delusion of being controlled, a delusion in which one experiences one's feelings, impulses, thoughts, or actions as not one's own, but as being imposed on by some external force. Synonym: delusion of passivity. (05 Mar 2000) |