Electromagnetic Fluctuations in Media with Space-Time Dispersion

1967 ◽  
pp. 19-35
Author(s):  
A.G. Sitenko
Keyword(s):  
Space Time ◽  
Time Dispersion

scholarly journals Space-time dispersion of graphene conductivity

2007 ◽  
Vol 56 (4) ◽  
pp. 281-284 ◽  
Author(s):  
L. A. Falkovsky ◽  
A. A. Varlamov
Keyword(s):  
Space Time ◽  
Time Dispersion

scholarly journals Detecting space–time agglomeration processes over the Great Recession using firm-level micro-geographic data

2020 ◽  
Vol 22 (4) ◽  
pp. 419-445
Author(s):  
Giulio Cainelli ◽  
Roberto Ganau ◽  
Yuting Jiang
Keyword(s):  
Great Recession ◽  
Manufacturing Industry ◽  
Space Time ◽  
Firm Level ◽  
Geographic Concentration ◽  
The Great Recession ◽  
Time Dispersion ◽  
Manufacturing Sectors ◽  
Spatio Temporal ◽  
Short Time

Abstract We analyze the spatio-temporal agglomeration dynamics that occurred in the Italian manufacturing industry during the recent period of the Great Recession. To study this phenomenon, we employ three different statistical methods—namely, Ellison and Glaeser’s index of industrial geographic concentration, the spatial K-function, and the space–time K-function—, and rely on a large sample of geo-referenced, single-plant manufacturing firms observed over the period 2007–2012. First, we demonstrate that different statistical techniques can lead to (very) different results. Second, we find that most Italian manufacturing sectors experienced spatial dispersion processes during the period of the Great Recession. Finally, we show that space–time dispersion processes occurred at small spatial distances and short time horizon, although we do not detect statistically significant space–time interactions.

Space, Time and Einstein

2002 ◽  
Author(s):  
J. B. Kennedy
Keyword(s):  
Space Time

Spinors and Space-Time

1984 ◽  
Author(s):  
Roger Penrose ◽  
Wolfgang Rindler
Keyword(s):  
Space Time

Do Writing Directions Influence How People Map Space onto Time?

2018 ◽  
Vol 77 (4) ◽  
pp. 173-184
Author(s):  
Wenxing Yang ◽  
Ying Sun
Keyword(s):  
Mental Representations ◽  
Space Time ◽  
Horizontal Axis ◽  
Causal Role ◽  
Writing Systems ◽  
Temporal Cognition ◽  
Japanese Speakers ◽  
Psychological Experiments ◽  
Vertical Up

Abstract. The causal role of a unidirectional orthography in shaping speakers’ mental representations of time seems to be well established by many psychological experiments. However, the question of whether bidirectional writing systems in some languages can also produce such an impact on temporal cognition remains unresolved. To address this issue, the present study focused on Japanese and Taiwanese, both of which have a similar mix of texts written horizontally from left to right (HLR) and vertically from top to bottom (VTB). Two experiments were performed which recruited Japanese and Taiwanese speakers as participants. Experiment 1 used an explicit temporal arrangement design, and Experiment 2 measured implicit space-time associations in participants along the horizontal (left/right) and the vertical (up/down) axis. Converging evidence gathered from the two experiments demonstrate that neither Japanese speakers nor Taiwanese speakers aligned their vertical representations of time with the VTB writing orientation. Along the horizontal axis, only Japanese speakers encoded elapsing time into a left-to-right linear layout, which was commensurate with the HLR writing direction. Therefore, two distinct writing orientations of a language could not bring about two coexisting mental time lines. Possible theoretical implications underlying the findings are discussed.

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