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biology):
Constructor
(computing):
Containment hierarchy
(computing):
Continuous
(mathematics):
Convolution
(mathematics):
Covalent bond
(chemistry):
Cross product
(mathematics):
Ctrl (computing):
Cursor (computing):
structure, to resist changes during evolution, resulting in similar
forms. Some evolutionary changes are more conservative than
others, e.g. DNA changes that don’t affect protein sequence or
amino acid changes that conserve chemical characteristics.
A function that is part of the definition of an object class, which
is executed whenever a new object of that type is made. Thus a
constructor may be used to set up the initial state of a computer
object. In Python the constructor function is named __init__.
A means of describing the links and relationships between
computational data items, especially in a data model, where one
kind of object belongs to, or is contained by, another, producing
a tree-like system of categorisation.
Where a quantity is modelled in terms of the real numbers
instead of a discrete series, i.e. taking any value, not just whole
numbers.
The modification of one function given another, whereby for
different offsets (sliding one relative to the other) a new
function is created as the summation of the product of the two.
Commonly used in image adjustment where original pixel
values are modified by a convolution matrix that specifies how
pixels of the adjusted image are formed by the weighted
combinations of surrounding pixels.
A strong chemical bond between two atoms that are held
together in a discrete molecule.
In three dimensions, a vector which is orthogonal to both of two
specified vectors, and with length given by the area of the
parallelogram determined by the two vectors.
The control key on the keyboard, usually used in combination
with other keys so the user can issue specific commands. The
equivalent for German keyboards is ‘Strg’.
The point on a computer screen where typed keyboard
characters appear. Often indicated by a graphical marker so the
Cursor (databases):
Database schema
(computing):
Data model
(computing):
Decorator (computing):
Degrees of freedom
(mathematics):
Denormalisation
(computing):
Destructor (computing):
Determinant
(mathematics):
user can see where text will be extended or inserted.
A way of accessing the data records in a relational database via
programming, to process it in terms of its rows.
A way of specifying the layout of the information that will be
stored in a relational database.
Using data object definitions, as formalised in classes, to create
a computational representation of a network of interconnected
concepts. A data model will often, but not always, contain
classes that correspond closely to real-world entities, such as
atoms, molecules or even people. The purpose of the model is to
provide a convenient way of representing data and its
connections. The model itself is an abstract concept, and so does
not contain any specific data. Rather the model is a specification
of how to represent data, which in turn is used to create real
instances of computer objects.
A Python function that is used to wrap and modify another
function (similar to annotations in Java). A modifying decorator
function is declared before the target function it operates on
(using the @ symbol), but is equivalent to calling the modifying
function on the result of the target.
The number of parameters that are free to vary in a
mathematical model; the minimum number of parameters that
are needed to fully specify the state of a system.
The redundant storage of data in a relational database so that
fewer tables are used, i.e. by repeating values.
A function that is part of the definition of an object class, which
is executed whenever an object is deleted, e.g. to perform any
required clean-up.
A number that can be calculated from a matrix that gives the
volume of the region obtained when the matrix is applied as a
transformation to a region with unit volume.
Detailed balance:
Dictionary (computing):
Diffraction pattern
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