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Simplicial and topological descriptions of human brain dynamics
Get PDFWhile brain imaging tools like functional magnetic resonance imaging (fMRI) afford measurements of whole-brain activity, it remains unclear how best to interpret patterns found amid the data’s apparent self-organization. To clarify how patterns of brain activity support brain function, one might identify metric spaces that optimally distinguish brain states across experimentally defined conditions. Therefore, the present study considers the relative capacities of several metric spaces to disambiguate experimentally defined brain states. One fundamental metric space interprets fMRI data topographically, that is, as the vector of amplitudes of a multivariate signal, changing with time. Another perspective compares the brain’s functional connectivity, that is, the similarity matrix computed between signals from different brain regions. More recently, metric spaces that consider the data’s topology have become available. Such methods treat data as a sample drawn from an abstract geometric object. To recover the structure of that object, topological data analysis detects features that are invariant under continuous deformations (such as coordinate rotation and nodal misalignment). Moreover, the methods explicitly consider features that persist across multiple geometric scales. While, certainly, there are strengths and weaknesses of each brain dynamics metric space, wefind that those that track topological features optimally distinguish experimentally defined brain states
London: Porten til Verden
No full textBogen fortæller Londons fascinerende historie, og hvordan historiske og politiske strømninger har skabt byen, og hvordan magthaverne har formet og omformet den. Mens hovedstæder som Rom, Berlin og Paris er præget af kirkers, kongers og kejseres stærke hånd i byplanlægning, monumenter og arkitektur, kendetegnes Londons historie af talrige diskussioner om, hvordan byen skulle udvikle sig, og hvordan verdensbyens triumfer skulle vises frem.
I middelalderen opstod der en konflikt mellem den økonomiske magt i City of London og den politiske magt i City of Westminster, og London blev først samlet i en storkommune i 1888. Konflikten kan stadig spores.
Porten til verden fortæller også, hvordan Themsen har præget London. Floden var med til at skabe handelsbyen London og gjorde i moderne tid byen til hjerte i et verdensomspændende imperium, hvor solen aldrig gik ned.
Bogen henvender sig til den historieinteresserede læser og den kulturrejsende, som gerne vil nogle spadestik dybere for at forstå historien, arkitekturen og monumenterne i en af verdens mest besøgte byer. Byen har en 2.000 år lang historie – fra romernes Londinium til nyliberalismens skyskrabere. Bogen tager læseren med tilbage til Romerrigets og middelalderens London, Reformationen og den nye anglikanske statskirke, pesten og den store brand i 1666, kolonitiden og væksten, verdenskrigene og genopretningen samt byplanlægningen og den globale pengestrøm. Det hele på godt og ondt
One shot learning approach to identify drivers
Get PDFThis paper presents a new approach to identify users of shared powered mobility platfroms using One Shot learning algorithm. An electronic circuit is created using a Raspberry Pi and a camera module. Python programming language is used to create a program to control the function of the camera module and conduct One Shot learning to identify users. A user interface containing Start and Stop buttons is created to operate the camera module. If Start is pressed, the Python program will trigger the camera to take a snapshot, then the program will identify the face in that snapshot and perform facial recognition to compare that face with a database of user facial images. If a match was found a message box popped-up showing the user name. Once a user is identified, their settings and preferences can be downloaded to the shared powered mobility platform. If the face in the snapshot did not match any of the user facial images in the data base, a message popped-up showing that user was not found in the database. Practical testing showed the system behaved satisfactorily and successfully detected users. One Shot learning allowed new users to be added to the database without the need to retrain the whole system
Evidence for executive function advantages in low SES bilingual children. But why do they arise? A commentary on Grote, Scott and Gilger (2021)
Get PDFIn a study comparing executive functions among US Spanish-English bilinguals from low socio-economic (SES) backgrounds to monolinguals of each language, Grote et al. find that bilingual advantages already manifest themselves in pre-school children. This commentary recommends building on this finding, and further investigate the causes underlying the observed executive function (EF) modulations in child bilingualism. A closer investigation of bilingual children’s dominance profiles and their bilingual practices, such as code-switching, may shed light on how bilingualism shapes the developmental trajectory of executive functions. The commentary also challenges the notion of ‘monolingualism’, and discusses whether bilingualism variables should be operationalised in a continuous or in a categorical manner
Warlord politics and economic clientelism in Lebanon
Get PDFSince October 2019, Lebanon has been going through a deep economic and financial crisis that drove the country to a political meltdown. Facing a severe recession, high inflation and unemployment, nationwide protests in the aftermath of the Beirut explosion in August 2020 have led to the resignation of Hassan Diab’s cabinet – the second government to resign within the span of a few months. This article studies the interplay of the political, economic, and social factors that led to the current economic and political crisis. We show how warlord politics, and a corporate consociational system have misguided incentives and policies and consolidated a rentier economy that inevitably led to the current situation
Why Can An Idea Be Like Nothing But Another Idea? A Conceptual Interpretation of Berkeley's Likeness Principle
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Vagrancy in the Victorian Age: Representing the Wandering Poor in Nineteenth-Century Literature and Culture
Get PDFVagrants were everywhere in Victorian culture. They wandered through novels and newspapers, photographs, poems and periodicals, oil paintings and illustrations. They appeared in a variety of forms in a variety of places: Gypsies and hawkers tramped the country, casual paupers and loafers lingered in the city, and vagabonds and beachcombers roved the colonial frontiers. Uncovering the rich Victorian taxonomy of nineteenth-century vagrancy for the first time, this interdisciplinary study examines how assumptions about class, gender, race and environment shaped a series of distinct vagrant types. At the same time it broaches new ground by demonstrating that rural and urban conceptions of vagrancy were repurposed in colonial contexts. Representational strategies circulated globally as well as locally, and were used to articulate shifting fantasies and anxieties about mobility, poverty and homelessness. These are traced through an extensive corpus of canonical, ephemeral and popular texts as well as a variety of visual forms
