displacement


Also found in: Dictionary, Thesaurus, Medical, Legal, Acronyms, Wikipedia.
Related to displacement: displacement unit, displacement engine

displacement,

in psychology: see defense mechanismdefense mechanism,
in psychoanalysis, any of a variety of unconscious personality reactions which the ego uses to protect the conscious mind from threatening feelings and perceptions.
..... Click the link for more information.
.

Displacement

 

in mechanics, the vector connecting the positions of a moving point at the beginning and the end of a certain time interval. The displacement vector is directed along the chord between the beginning and end of the point’s trajectory.

Displacement

(dreams)

Although many aspects of the personality theory formulated by Sigmund Freud have been rejected by contemporary analysts, Freud was nevertheless responsible for a significant number of insights into human nature that have been generally accepted. Among these insights are the Freudian “defense mechanisms,” one of which is displacement. In displacement we repress a certain urge, which is then redirected to another object or person. A familiar example is the employee who is yelled at by his boss, and who then goes home and yells at his spouse. What he really wants to do is to yell back at his boss, but he redirects the urge and takes out his anger on a safer target. A roughly similar process takes place in dreams.

According to Freud, dreams provide an avenue for the expression of normally repressed desires while simultaneously disguising and censoring our real urges. In this view the purpose of dreams is to allow us to satisfy in fantasies the instinctual urges that society judges to be unacceptable in some way, such as the urge to kill a bullying employer. If, however, we were to dream about the actual, overt murder of our boss, the emotions evoked by he dream would wake us up. So that our sleep is not continually disturbed by such dreams, the mind modifies and disguises the content of our dreams so that strong emotions are not evoked. Thus, instead of dreaming about killing our boss, we might, for example, dream about our employer’s automobile being accidentally crushed by a runaway garbage truck.

displacement

[dis′plās·mənt]
(chemistry)
A chemical reaction in which an atom, radical, or molecule displaces and sets free an element of a compound.
(computer science)
The number of character positions or memory locations from some point of reference to a specified character or data item. Also known as offset.
(electricity)
(fluid mechanics)
The weight of fluid which is displaced by a floating body, equal to the weight of the body and its contents; the displacement of a ship is generally measured in long tons (1 long ton = 2240 pounds).
The volume of fluid which is displaced by a floating body.
(geology)
(mechanics)
The linear distance from the initial to the final position of an object moved from one place to another, regardless of the length of path followed.
The distance of an oscillating particle from its equilibrium position.
(mechanical engineering)
The volume swept out in one stroke by a piston moving in a cylinder as for an engine, pump, or compressor.
(psychology)
A defense mechanism in which emotions, ideas, or wishes are transferred from their original object to a more acceptable substitute.

displacement

displacementclick for a larger image
displacementclick for a larger image
i. The total volume swept by pistons during the 180° rotation of a crankshaft of an internal combustion engine. It is the volume between top dead center and bottom dead center of an engine cylinder. Also called a swept volume.
ii. The mass of air displaced by a balloon or an airship. It may also be referred to as the weight of displaced air.
iii. The distance of any point from a standard point.
iv. The separation between a target and an interceptor at any point of time.

displacement

1. the weight or volume displaced by a floating or submerged body in a fluid
2. the volume displaced by the piston of a reciprocating pump or engine
3. Psychoanal the transferring of emotional feelings from their original object to one that disguises their real nature
4. Geology the distance any point on one side of a fault plane has moved in relation to a corresponding point on the opposite side
5. Astronomy an apparent change in position of a body, such as a star
6. Maths the distance measured in a particular direction from a reference point.
References in periodicals archive ?
The report analyzes key market trends, industry growth, driving & limiting factors and opportunities of the global proximity and displacement sensor's market for a better preview of the global market
The Americas also saw a rise in forced displacement.
Seasonal floods also caused significant displacement in sub-Saharan Africa, most notably in Niger, Chad, Sudan and South Sudan, countries with highly vulnerable populations who are also affected by conflict and drought.
Syria is the largest internal and fastest evolving displacement crisis in the world, according to the report, which noted that 9,500 people are being displaced in the war-torn country per day - approximately one family every 60 seconds.
Gemenne suggests that there is a divide amongst those concerned with the issue of EID between "alarmists" who speak of high displacement estimates and broad and sometimes stark definitions of "environmental refugees" and "skeptics" who favour much more modest displacement figures and more nuanced and multi-causal factors as the drivers.
2 demonstrates the integration of displacement diffusers into a column casing around a steel profile.
The statement of the operational unit and the UNHCR pointed out that the conflicts in Yemen over the past decade resulted in the displacement of about half a million Yemeni citizens from their homes ,where 13 provinces out of 21 Yemeni provinces were affected directly from internal displacement.
The section proceeds to describe how income shocks from the husband's displacement from a job can be incorporated into this model.
Some scholars have recently begun to investigate the impacts of displacement on composition, performance, and listening in a transnational context, examining such questions as the relationship of music to the experiences of nostalgia and acculturation among dispersed peoples, the representation of exile in musical works, and the roles of music in the construction of identities in displaced communities.
For machining error measurement, the 1-D ball array, the doubleball-bar, machine checking gauges, dual-frequency laser interferometry, laser displacement sensors and eddy current displacement sensors are used to detect the results of machine tool thermal variation [8-13].