ST segment

(noun)

The line between the QRS complex and the T wave, representing the time when the ventricles are depolarized before repolarization begins.

Related Terms

Examples of ST segment in the following topics:

  • Electrocardiogram and Correlation of ECG Waves with Systole

    • The ST segment refers to the gap (flat or slightly upcurved line) between the S wave and the T wave, and represents the time between ventricular depolarization and repolarization.
    • An elevated ST segment is the classic indicator for myocardial infarctions, though missing or downward sloping sloping ST segments may indicate myocardial ischemia.

  • Renaissance Architecture

    • Domes had been used only rarely in the Middle Ages, but after the success of the dome in Brunelleschi's design for the Florence Cathedral and its use in Bramante's plan for St.
    • Windows may be paired and set within a semicircular arch and may have square lintels and triangular or segmental pediments, which are often used alternately.
    • The Palazzo Farnese in Rome demonstrates the Renaissance window's particular use of square lintels and triangular and segmental pediments used alternatively.
    • The Dome of St Peter's Basilica, Rome is often cited as a foundational piece of Renaissance architecture.

  • The Importance of Market Segmentation

    • Market segmentation allows for a better allocation of a firm's finite resources.
    • Market segmentation can be defined in terms of the STP acronym, meaning Segment, Target and Position.
    • While there may be theoretically 'ideal' market segments, in reality, every organization engaged in a market will develop different ways of imagining market segments, and create product differentiation strategies to exploit these segments.
    • To increase marketing efficiency by directing effort specifically toward the designated segment in a manner consistent with that segment's characteristics
    • Rather, one or more target markets (segments) must be selected.

  • Developing a Market Segmentation

    • This allows them to focus all of their efforts on a single segment.
    • There are two major segmentation strategies followed by marketing organizations: a concentration strategy and a multi-segment strategy.
    • This strategy is advantageous because it enables the organization to analyze the needs and wants of only one segment and then focus all its efforts on that segment.
    • In the multi-segment strategy, a company focuses its marketing efforts on two or more distinct market segments.
    • Markets could also be segmented by usage rates.

  • Ter Brugghen, van Honthorst, Hals, Leyster

    • Their work generally depicted taverns and other scenes of entertainment that catered to the tastes and interests of a growing segment of the Dutch middle class.
    • In his group portraits, such as the The Officers of the St Adrian Militia Company, Hals captures each character in a different manner.
    • The Officers of the St Adrian Militia Company by Frans Hals, 1633
    • This is the second painting for the Cluveniers, St.
    • Adrian, or St.

  • Evaluating Market Segments

    • Segmentation involves classifying people into homogeneous groupings and determining which of these segments are viable target markets.
    • Rather, one or more target markets (segments) must be selected.
    • Thus, market segmentation is a twofold process that includes:
    • An ideal market segment meets all of the following criteria:
    • The other segmentation strategy is a multisegment strategy.

  • Determining Segmentation Variable(s)

    • Markets can be segmented primarily according to geographic, demographic, usage, and psychological segments--or a combination of the above.
    • As noted, religion is an interesting basis for demographic segmentation.
    • Segmenting the consumer market by age groups is useful for several products.
    • Gender has historically been a good basis for market segmentation.
    • The heavy user is an important basis for segmentation.

  • Renaissance Architecture in Rome

    • This structure has been described as Bramante's "calling card" to Pope Julius II, the important Renaissance patron of the arts who would then employ Bramante in the historic design of the new St.
    • Key Renaissance architectural features of the main facade include the alternating triangular and segmental pediments that cap the windows of the piano nobile, the central rusticated portal, and Michelangelo's projecting cornice, which throws a deep shadow on the top of the facade.
    • The Palazzo Farnese in Rome demonstrates the Renaissance window's particular use of square lintels and triangular and segmental pediments used alternatively.

  • Characteristics of Romanesque Architecture

    • Although basically rectangular, piers can often be of highly complex form, with half-segments of large hollow-core columns on the inner surface supporting the arch, or a clustered group of smaller shafts leading into the moldings of the arch.
    • Characteristics of Romaesque architecture include the ocular window and the pairing of two arched windows or arcade openings within a larger arch, both of which seen here at the Abbey Church of St.

  • Romanesque Sculpture: Reiner of Huy

    • Reiner of Huy was a 12th century metalworker and sculptor, to whom the baptismal font at St.
    • They include two scenes of John the Baptist, the Baptism of Christ, St.
    • Peter baptizing Cornelius the Centurion, and St.
    • Reiner of Huy, a 12th century metalworker and sculptor, is generally attributed with creating the baptismal font at St.
    • Describe the Reiner of Huy's masterpeice, the baptismal font at St.