Construct · 3 fields · 5 citations

Where does window collide?

One name. Different field. Different construct. One map.

● jingle · one word, three constructs Nearest construct by meaningleakagecompare the meanings
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Every construct on the map is compared with every other by the meaning of its definitions, and the closest one is surfaced here. The nearest construct to window is leakage.

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window3 CONSTRUCTSWindow functionBLACKMAN & TUKEY · TAPERCritical windowWIESEL & HUBEL · PERIODPolicy windowKINGDON · POLICY WINDOW

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1958Window function1963Critical window1984Policy window
2026

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Signal processing

A tapering function applied before spectral analysis

In signal processing a window is a weighting function that is multiplied into a finite stretch of data before its frequency content is estimated, tapering the segment smoothly toward zero at both ends so that cutting it off does not smear the result. Blackman and Tukey's 1958 The measurement of power spectra from the point of view of communications engineering named the spectral and lag windows and showed how the choice of taper shapes the estimate. Harris's 1978 On the use of windows for harmonic analysis with the discrete Fourier transform catalogued dozens of window shapes and the trade they make between resolution and leakage. The referent is a mathematical taper applied to a data record, not a stretch of developmental time nor an opening in the political calendar.[1][2]

Unit
A weighting function over a finite data segment, valued between 0 and 1
Recovery means
Not applicable
Measured by
Characterised by its main-lobe width and side-lobe levels in the frequency domain

Developmental neuroscience

A bounded developmental period of heightened plasticity

In developmental neuroscience a critical or sensitive window is a bounded stretch of early life during which experience shapes the wiring of the brain, after which the same experience has little effect. Wiesel and Hubel's 1963 Single-cell responses in striate cortex of kittens deprived of vision in one eye established such a period for the visual cortex by showing that closing one eye altered cortical responses only when it happened early. Hensch's 2005 Critical period plasticity in local cortical circuits synthesised how these windows open and close and how inhibitory circuits set their timing. The referent is a span of biological development, not a taper applied to a signal nor a chance to pass a law.[3][4]

Unit
A span of developmental time, bounded by an opening and a closing age
Recovery means
Plasticity declines as the window closes, though some reopening can be induced experimentally
Measured by
Bounded by the ages at which a manipulation still alters an outcome, from deprivation or rearing studies

Policy studies

A brief opening when policy change becomes possible

In policy studies a policy window is a fleeting opening during which a proposal can actually be adopted, when a recognised problem, an available solution, and a favourable political moment line up at once. Kingdon's 1984 Agendas, alternatives, and public policies introduced the term and its multiple-streams account, in which advocates wait for such an opening and then couple their solution to the problem of the day. The referent is a transient opportunity in the making of government decisions, not a bounded period of brain development nor a weighting function in spectral analysis.[5]

Unit
A transient opening in time when a proposal can be enacted
Recovery means
Not applicable
Measured by
Identified in case studies by the coupling of the problem, policy, and political streams around an event

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Nearby collisions

plasticity4 fields · 6 citationsjingle · one word, four sciencesfilter3 fields · 3 citationsjingle · one word, three constructsaliasing4 fields · 4 citationsjingle · one word, four constructstaper3 fields · 4 citationsjingle · one word, three constructs

References

  1. Blackman, R. B., & Tukey, J. W. (1958). The measurement of power spectra from the point of view of communications engineering, Part I. The Bell System Technical Journal, 37(1), 185–282. https://doi.org/10.1002/j.1538-7305.1958.tb03874.x
  2. Harris, F. J. (1978). On the use of windows for harmonic analysis with the discrete Fourier transform. Proceedings of the IEEE, 66(1), 51–83. https://doi.org/10.1109/PROC.1978.10837
  3. Wiesel, T. N., & Hubel, D. H. (1963). Single-cell responses in striate cortex of kittens deprived of vision in one eye. Journal of Neurophysiology, 26(6), 1003–1017. https://doi.org/10.1152/jn.1963.26.6.1003
  4. Hensch, T. K. (2005). Critical period plasticity in local cortical circuits. Nature Reviews Neuroscience, 6(11), 877–888. https://doi.org/10.1038/nrn1787
  5. Kingdon, J. W. (1984). Agendas, alternatives, and public policies. Little, Brown.

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