History is Fractal

2019 ◽  
pp. 187-238
Author(s):  
Claudia Nelson ◽  
Anne Morey
Keyword(s):  
Fractal Structure ◽  
Red Shift ◽  
Spatial Metaphor ◽  
Hunger Games

This chapter explores dystopian works—Diana Wynne Jones’s The Game (2007), Alan Garner’s Red Shift (1971), John Christopher’s Fireball series (1981–6), N. M. Browne’s Warriors series (2000–9), Suzanne Collins’s Hunger Games trilogy (2008–10), Sabaa Tahir’s An Ember in the Ashes and its two sequels (2015–18), and Megan Whalen Turner’s The Queen’s Thief series (1996–2017)—whose dominant spatial metaphor is that of the fractal. The fractal structure offers a jaundiced view of progress marred by conflicts large and small whose protagonists are caught within uncontrollable repetition. It is argued that memory is central to this exploration of conflict and that memory is intertwined with guilt and empathy. While these works also foreground the agency of the young protagonist, efforts at communication are as likely to be damaging as healing, and emotion is often revealed to be a matter of performance rather than authenticity.

Rapid determination of fractal structure of bacterial assemblages in wastewater treatment: implications to process optimisation

1998 ◽  
Vol 38 (2) ◽  
pp. 9-15 ◽  
Author(s):  
J. Guan ◽  
T. D. Waite ◽  
R. Amal ◽  
H. Bustamante ◽  
R. Wukasch
Keyword(s):  
Wastewater Treatment ◽  
Fractal Structure ◽  
Structural Information ◽  
Rapid Determination ◽  
Fractal Dimensions ◽  
Structure Information ◽  
Treatment Processes ◽  
On Line ◽  
Bacterial Aggregates

A rapid method of determining the structure of aggregated particles using small angle laser light scattering is applied here to assemblages of bacteria from wastewater treatment systems. The structure information so obtained is suggestive of fractal behaviour as found by other methods. Strong dependencies are shown to exist between the fractal structure of the bacterial aggregates and the behaviour of the biosolids in zone settling and dewatering by both pressure filtration and centrifugation methods. More rapid settling and significantly higher solids contents are achievable for “looser” flocs characterised by lower fractal dimensions. The rapidity of determination of structural information and the strong dependencies of the effectiveness of a number of wastewater treatment processes on aggregate structure suggests that this method may be particularly useful as an on-line control tool.

Cognitive Migrations

2019 ◽  
pp. 622-642
Author(s):  
Thomas DeGloma ◽  
Erin F. Johnston
Keyword(s):  
Narrative Identity ◽  
Possible Selves ◽  
Identity Work ◽  
Personal Lives ◽  
Spatial Metaphor ◽  
Transformative Experiences ◽  
Personal Transformations ◽  
Self And Identity ◽  
Contested Meanings ◽  
Plot Structure

This chapter explores the ways individuals account for cognitive migrations—significant changes of mind and consciousness that are often expressed as powerful discoveries, transformative experiences, and newly embraced worldviews. It outlines three ideal typical forms of cognitive migration: awakenings, self-actualizations, and ongoing quests. Building on prior approaches to such personal transformations, it develops the notion of cognitive migration to argue the following set of interrelated points. First, cognitive migrations take autobiographical form, which is to say they manifest as the narrative identity work of individuals who undergo them. Second, such narrative identity work provides a reflexive foundation for an individual’s understanding of self and identity in relation to other possible selves and identities—for seeing oneself as a relationally situated character. Third, individuals who articulate cognitive migrations use the plot structure and cultural coding at the root of their narratives to express their allegiance to a new sociomental community. They thereby take on new cognitive norms and identity-defining conventions while rejecting potential alternatives, locating themselves within a broader sociomental field. The spatial metaphor of cognitive migrations draws explicit attention to the broader sociomental field in which such radical changes of mind take place. Finally, such narrative identity work links self-understandings to the often-contested meanings of broadly relevant issues, events, and experiences; when individuals account for their cognitive migrations, they also advance claims that reach well-beyond their personal lives.

scholarly journals Exciton Coupling and Conformational Changes Impacting the Excited State Properties of Metal Organic Frameworks

Molecules ◽  
2020 ◽  
Vol 25 (18) ◽  
pp. 4230
Author(s):  
Andreas Windischbacher ◽  
Luca Steiner ◽  
Ritesh Haldar ◽  
Christof Wöll ◽  
Egbert Zojer ◽  
...  
Keyword(s):  
Conformational Changes ◽  
Photophysical Properties ◽  
Metal Organic Framework ◽  
Metal Organic Frameworks ◽  
Red Shift ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Exciton Coupling ◽  
Metal Organic ◽  
Crystalline Metal

In recent years, the photophysical properties of crystalline metal-organic frameworks (MOFs) have become increasingly relevant for their potential application in light-emitting devices, photovoltaics, nonlinear optics and sensing. The availability of high-quality experimental data for such systems makes them ideally suited for a validation of quantum mechanical simulations, aiming at an in-depth atomistic understanding of photophysical phenomena. Here we present a computational DFT study of the absorption and emission characteristics of a Zn-based surface-anchored metal-organic framework (Zn-SURMOF-2) containing anthracenedibenzoic acid (ADB) as linker. Combining band-structure and cluster-based simulations on ADB chromophores in various conformations and aggregation states, we are able to provide a detailed explanation of the experimentally observed photophysical properties of Zn-ADB SURMOF-2: The unexpected (weak) red-shift of the absorption maxima upon incorporating ADB chromophores into SURMOF-2 can be explained by a combination of excitonic coupling effects with conformational changes of the chromophores already in their ground state. As far as the unusually large red-shift of the emission of Zn-ADB SURMOF-2 is concerned, based on our simulations, we attribute it to a modification of the exciton coupling compared to conventional H-aggregates, which results from a relative slip of the centers of neighboring chromophores upon incorporation in Zn-ADB SURMOF-2.

scholarly journals DsbB elicits a red-shift of bound ubiquinone during the catalysis of DsbA oxidation. Vol. 279 (2004) 6761-6768

2004 ◽  
Vol 279 (23) ◽  
pp. 24906
Author(s):  
Kenji Inaba ◽  
Yoh-hei Takahashi ◽  
Nobutaka Fujieda ◽  
Kenji Kano ◽  
Hideto Miyoshi ◽  
...  
Keyword(s):  
Red Shift

Comparison Study of Hilbert Sierpinski and Koch Fractal Structure on Coplanar Vivaldi Antenna for L/S band Application

2020 ◽  
Author(s):  
Nurhayati Nurhayati ◽  
Alexandre M. De Oliveira ◽  
Antonio. M. de Oliveira ◽  
Raimundo Eider Figueredo ◽  
Marco Antonio B. Pinto ◽  
...  
Keyword(s):  
Fractal Structure ◽  
Comparison Study ◽  
Vivaldi Antenna ◽  
Koch Fractal
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