How Durable and New Is Transnational Life?: Historical Retrieval through Local Comparison

2000 ◽  
Vol 9 (2) ◽  
pp. 203-233 ◽  
Author(s):  
Robert C. Smith
Keyword(s):  
2013 ◽  
Author(s):  
Agnes Ostertag ◽  
Francoise Peyrin ◽  
Sylvie Fernandez ◽  
Jean-Denis Laredo ◽  
Vernejoul Marie-Christine De ◽  
...  

2019 ◽  
Vol 51 ◽  
pp. 30-41 ◽  
Author(s):  
Marzieh Mokhtari ◽  
Hossein Rabbani ◽  
Alireza Mehri-Dehnavi ◽  
Raheleh Kafieh ◽  
Mohammad-Reza Akhlaghi ◽  
...  

Author(s):  
Dimitris Kalles ◽  
Alexis Kaporis ◽  
Vassiliki Mperoukli ◽  
Anthony Chatzinouskas

The authors in this chapter use simple local comparison and swap operators and demonstrate that their repeated application ends up in sorted sequences across a range of variants, most of which are also genetically evolved. They experimentally validate a square run-time behavior for emergent sorting, suggesting that not knowing in advance which direction to sort and allowing such direction to emerge imposes a n/logn penalty over conventional techniques. The authors validate the emergent sorting algorithms via genetically searching for the most favorable parameter configuration using a grid infrastructure.


eLife ◽  
2015 ◽  
Vol 4 ◽  
Author(s):  
Miguel Rovira ◽  
Pedro Saavedra ◽  
José Casal ◽  
Peter A Lawrence

Planar cell polarity (PCP), the coordinated and consistent orientation of cells in the plane of epithelial sheets, is a fundamental and conserved property of animals and plants. Up to now, the smallest unit expressing PCP has been considered to be an entire single cell. We report that, in the larval epidermis of Drosophila, different subdomains of one cell can have opposite polarities. In larvae, PCP is driven by the Dachsous/Fat system; we show that the polarity of a subdomain within one cell is its response to levels of Dachsous/Fat in the membranes of contacting cells. During larval development, cells rearrange (<xref ref-type="bibr" rid="bib25">Saavedra et al., 2014</xref>) and when two subdomains of a single cell have different types of neighbouring cells, then these subdomains can become polarised in opposite directions. We conclude that polarisation depends on a local comparison of the amounts of Dachsous and Fat within opposing regions of a cell's membrane.


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