Diagram

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diagram

Maths a pictorial representation of a quantity or of a relationship

diagram

A plan, sketch, drawing, chart or graph, not necessarily representational, that explains, demonstrates or clarifies the arrangement and relationship of the parts to a whole.
See also: Design drawing

Diagram

 

in botany, a graphic representation of the shape, number, and location of the parts of a flower or leafy shoot by projecting them on a horizontal surface. The diagram of a flower is made on the basis of one or several transverse sections of the bud. Using conventional symbols, the diagram of a flower may show only the parts visible in a cross section (an empirical diagram of the flower) or it may also show not-yet-developed parts or parts that have disappeared (a theoretical diagram of the flower, based on the study of many empirical diagrams). The diagram of a shoot is based on a schematic representation of a transverse section through the vegetative bud.


Diagram

 

in design documentation, a document showing in conventional notation the components of an article or installation and the connections or links between components. Diagrams are usually drawn without regard to scale or to the actual spatial arrangement of the components. They may be classified according to the type of components and connections between components as electrical, pneumatic, hydraulic, kinematic, or combination diagrams. They may also be classified according to the purpose for which they will be used.

Block diagrams that define each principal working component of an article or installation and the component’s purpose and interconnections are developed concurrently with the design of the article, before any other type of diagram; they are used in studying the article’s structure and functioning and are referred to when the article is in actual use.

Functional diagrams showing the processes that occur within an article and within individual components are used in studying the functional capabilities of the article, as well as in installation, adjustment, control, and repair work.

Schematic diagrams define the components of the article that constitute a complete set and the interconnections between components; they usually give a detailed representation of the working principle of the article and may serve as a basis for developing other design documents, such as electrical installation blueprints and specification sheets.

Circuit diagrams show connectors between components and the locations of connectors and lead-ins; such diagrams also illustrate methods of laying out, mounting, and fastening conductors, cables, and piping. Others show external connections to other articles; such diagrams are used for the installation and operation of complex units. Diagrams showing the principal parts of a complex and the interconnections between subassemblies when the complex is installed and operated are designed primarily to give a general representation of the complex. Layout diagrams show the relative spatial arrangement of components.

In the USSR the procedure for drawing up diagrams is established by State Standards (GOST).

V. N. KVASNITSKII

diagram

[′dī·ə‚gram]
(computer science)
A schematic representation of a sequence of subroutines designed to solve a problem; it is a coarser and less symbolic representation than a flow chart, frequently including descriptions in English words.
(graphic arts)
A line drawing that represents an object or area according to a scale.
A graph which shows the relation between two variables or which plots the occurrence of events or objects as a function of two variables.
(mathematics)
A picture in which sets are represented by symbols and mappings between these sets are represented by arrows.
References in periodicals archive ?
Scrolling texts, pop up windows, rapid refresh in screen displays all introduce a more rapid temporal rate of re-inscription than print allowed, but the flat space of display to which most screen writing is reduced is, if anything, far less diagrammatically sophisticated than the spaces of a three-dimensional codex.
With the self-complementary principle in mind, the proposed antenna configuration was developed by the procedure shown diagrammatically in Figure 6.
the indices around the text (the text division); discursive hints, characteristic feature of a written mass-media piece, responsible for image indices that the text raises (diagrammatically and mentally) in the reader's mind: the idea that the reader makes about the mass-media piece, shared ideas that are culturally earned therefore socially accepted.
(12) The intracellular components of this pathway and the presentation of MHC Class I antigens to T-cells are shown diagrammatically in Figure 1.
Both the specific sugar residues in GM1 and the amino acid residues in CTB interacting with each other have been defined and based on published data (31,32) we diagrammatically represent those interactions (Fig.
Societies, norms and values can be visualised diagrammatically in an equilateral triangle showing their relationship, a partnership that supports cultural heritage.
This conceptualization (represented diagrammatically) depicts how a reduction and prevention of barriers can ameliorate student symptoms and increase student achievement.
Today, with more than 70 dead and with no end in sight, everybody has a different, diagrammatically opposite take on the subject.
This would result in two fragments of DNA being produced if the insert was present, including a smaller and larger fragment if the insert was correctly orientated 5' to 3' or more medium sized fragments if there was a 3' to 5' orientation as explained diagrammatically in figure 5 below:
The scheme utilizes a pseudo-random polynomial function to generate a key pool and it is referred to as the PRPF-based key management scheme which is diagrammatically represented in Figure 2.
A simplest model of a lever-damper isolator (LDI) is the SDOF system shown diagrammatically in Figure 1.
The interrelationships of the social determinants of health can be represented diagrammatically, using the concept of an iceberg, where the mortality and visible impacts of illness are at the top of the iceberg, above the waterline.