Profinite ∞\infty-operads: Part II

In our paper "Profinite $\infty$-operads", we developed a model for the homotopy theory of profinite $\infty$-operads in the form of dendroidal objects with values in profinite sets. In this sequel, we describe a Quillen equivalent model based on dendroidal objects with values in Quick's model category of profinite spaces. This model enables us to prove a Dwyer-Kan style characterization of the weak equivalences between profinite $\infty$-operads and to characterize the underlying $\infty$-category as an $\infty$-categorical pro-category. Moreover, we use this model to show that the profinite completion used by Boavida de Brito-Horel-Robertson in their study of the Grothendieck-Teichm\"uller group fits in our general theory of profinite completion as a left Quillen functor.Comment: 45 page

Simplicial model structures on pro-categories

We describe a method for constructing simplicial model structures on ind- and pro-categories. Our method is particularly useful for constructing "profinite" analogues of known model categories. Our construction quickly recovers Morel's model structure for pro-p spaces and Quick's model structure for profinite spaces, but we will show that it can also be applied to construct many interesting new model structures. In addition, we study some general properties of our method, such as its functorial behaviour and its relation to Bousfield localization. We compare our construction to the infinity-categorical approach to ind- and pro-categories in an appendix.Comment: 44 pages; v2: improved expositio

Tactile Tourism: Tourist Attractions to Touch

The present article explores tourist attractions that include touch as a significant component of the tourist’s place-related experience. We have chosen to label this phenomenon “tactile tourism”. The tradition of touching attractions is not new but has been a central part of the experience of specific place-related interests for a long time. However, despite its frequent and often significant presence in tourist destinations, few studies in tourism research study the phenomenon. The article is based on a theoretical line of reasoning which starts from a few concrete examples of different places in Europe where we have identified tactile features relevant to tourism. The empirical material for our discussion has been collected partly through e-mail correspondence with tourist organizations in the places selected for the study and partly through articles in social media and other relevant secondary data. This tactile experience contributes a substantial share of the primary enticement of the attraction and simultaneously invests the place with meaning, which in turn attracts tourists

On the occurrence of Schistidium subconfertum and S. succulentum in Europe

We here clarify that currently there are no records of the Asiatic Schistidium subconfertum (Broth.) Deguchi in Europe. The only European specimen referred to this species represents S. succulentum Ignatova & H.H. Blom, a taxon rather recently described from Caucasus. Furthermore, we provide new records of the latter species in the French and Swiss Alps. The two species share a reduced peristome, but can be distinguished by characteristics of the gametophyte such as lamina thickness (unistratous in S. subconfertum versus partially bistratous in S. succulentum) and shallowly versus strongly projecting costa

Optimized imaging using non-rigid registration

The extraordinary improvements of modern imaging devices offer access to data with unprecedented information content. However, widely used image processing methodologies fall far short of exploiting the full breadth of information offered by numerous types of scanning probe, optical, and electron microscopies. In many applications, it is necessary to keep measurement intensities below a desired threshold. We propose a methodology for extracting an increased level of information by processing a series of data sets suffering, in particular, from high degree of spatial uncertainty caused by complex multiscale motion during the acquisition process. An important role is played by a nonrigid pixel-wise registration method that can cope with low signal-to-noise ratios. This is accompanied by formulating objective quality measures which replace human intervention and visual inspection in the processing chain. Scanning transmission electron microscopy of siliceous zeolite material exhibits the above-mentioned obstructions and therefore serves as orientation and a test of our procedures

Archived 1976-1985 JPL Aircraft SAR Data

This report describes archived data from the Jet Propulsion Laboratory (JPL) aircraft radar expeditions in the mid-1970s through the mid-1980s collected by Ron Blom, JPL Radar Geologist. The dataset was collected during Ron's career at JPL from the 1970s through 2015. Synthetic Aperture Radar (SAR) data in the 1970s and 1980s were recorded optically on long strips of film. SAR imagery was produced via an optical, holographic technique that resulted in long strips of film imagery

Phospho.ELM:a database of experimentally verified phosphorylation sites in eukaryotic proteins

BACKGROUND: Post-translational phosphorylation is one of the most common protein modifications. Phosphoserine, threonine and tyrosine residues play critical roles in the regulation of many cellular processes. The fast growing number of research reports on protein phosphorylation points to a general need for an accurate database dedicated to phosphorylation to provide easily retrievable information on phosphoproteins.DESCRIPTION: Phospho.ELM http://phospho.elm.eu.org is a new resource containing experimentally verified phosphorylation sites manually curated from the literature and is developed as part of the ELM (Eukaryotic Linear Motif) resource. Phospho.ELM constitutes the largest searchable collection of phosphorylation sites available to the research community. The Phospho.ELM entries store information about substrate proteins with the exact positions of residues known to be phosphorylated by cellular kinases. Additional annotation includes literature references, subcellular compartment, tissue distribution, and information about the signaling pathways involved as well as links to the molecular interaction database MINT. Phospho.ELM version 2.0 contains 1703 phosphorylation site instances for 556 phosphorylated proteins.CONCLUSION: Phospho.ELM will be a valuable tool both for molecular biologists working on protein phosphorylation sites and for bioinformaticians developing computational predictions on the specificity of phosphorylation reactions.</p

The Political Theology of Violence in Contemporary India

What are we to make of the fact that most violence in India rarely has any visible or clear actors? Why is most violence represented as ‘pure events’ without identifiable actors—but as ‘mobs’, as spontaneous combustion, as spontaneous rage that arises from perceived collective grievances and insults? Why in a country saturated in political rhetoric is it that acts of violence have acquired their own semiotic register, a singular form of ‘political communication’? Fire and incidents of arson are at the heart of this naturalization of violence, as events without actors. Fire is not only one of the densest cultural signifiers in India, it also is at the heart of the transgressions, the exceptions, the taboos, the sacrifices, the agency, the sense of communitas that unfold in times of heightened conflict and violent clashes with the state or other communities. Drawing on examples from Mumbai and elsewhere, the paper attempts to theorize and elaborate the nexus between fire, violence and collective sentiments