The History of UNESCO’s Lifelong Learning Policy Discourses: A Enduring Social Democratic Liberalist Project of Global Educational Development

This article exposes precisely what ideological influences have been situated as authoritative and as marginal within UNESCO’s lifelong learning policy discourses over time, periodizing those discourses in terms of their political-economic contexts. As such, analysis reveals UNESCO’s continuous commitment to extending social democratic liberalist lifelong learning discourses of global educational development in the interest of global justice

G-virial: Gravity-based structure analysis of molecular clouds

We present the G-virial method (available at http://gxli.github.io/G-virial/) which aims to quantify (1) the importance of gravity in molecular clouds in the position-position-velocity (PPV) space, and (2) properties of the gas condensations in molecular clouds. Different from previous approaches that calculate the virial parameter for different regions, our new method takes gravitational interactions between all the voxels in 3D PPV data cubes into account, and generates maps of the importance of gravity. This map can be combined with the original data cube to derive relations such as the mass-radius relation. Our method is important for several reasons. First, it offers the the ability to quantify the centrally condensed structures in the 3D PPV data cubes, and enables us to compare them in an uniform framework. Second, it allows us to understand the importance of gravity at different locations in the data cube, and provides a global picture of gravity in clouds. Third, it offers a robust approach to decomposing the data into different regions which are gravitationally coherent. To demonstrate the application of our method we identified regions from the Perseus and Ophiuchus molecular clouds, and analyzed their properties. We found an increase in the importance of gravity towards the centers of the individual molecular condensations. We also quantified the properties of the regions in terms of mass-radius and mass-velocity relations. Through evaluating the virial parameters based on the G-virial, we found that all our regions are almost gravitationally bound. Cluster-forming regions appear are more centrally condensed.Comment: Accepted by A&

Scaling and regeneration of self-organized patterns

Biological patterns generated during development and regeneration often scale with organism size. Some organisms, e.g., flatworms, can regenerate a rescaled body plan from tissue fragments of varying sizes. Inspired by these examples, we introduce a generalization of Turing patterns that is self-organized and self-scaling. A feedback loop involving diffusing expander molecules regulates the reaction rates of a Turing system, thereby adjusting pattern length scales proportional to system size. Our model captures essential features of body plan regeneration in flatworms as observed in experiments.Comment: 5 pages, 3 color figure

A New Group of Two-Dimensional Non-van der Waals Materials with Ultra Low Exfoliation Energies

The exfoliation energy - quantifying the energy required to extract a two-dimensional (2D) sheet from the surface of a bulk material - is a key parameter determining the synthesizability of 2D compounds. Here, using ab initio calculations, we present a new group of non-van der Waals 2D materials derived from non-layered crystals which exhibit ultra low exfoliation energies. In particular for sulfides, surface relaxations are essential to correctly describe the associated energy gain needed to obtain reliable results. Taking into account long-range dispersive interactions has only a minor effect on the energetics and ultimately proves that the exfoliation energies are close to the ones of traditional van der Waals bound 2D compounds. The candidates with the lowest energies, 2D SbTlO$_3$ and MnNaCl$_3$, exhibit appealing electronic, potential topological, and magnetic features as evident from the calculated band structures making these systems an attractive platform for fundamental and applied nanoscience.Comment: 23 pages, 14 figure

Randomized diffusion for indivisible loads

We present a new randomized diffusion-based algorithm for balancing indivisible tasks (tokens) on a network. Our aim is to minimize the discrepancy between the maximum and minimum load. The algorithm works as follows. Every vertex distributes its tokens as evenly as possible among its neighbors and itself. If this is not possible without splitting some tokens, the vertex redistributes its excess tokens among all its neighbors randomly (without replacement). In this paper we prove several upper bounds on the load discrepancy for general networks. These bounds depend on some expansion properties of the network, that is, the second largest eigenvalue, and a novel measure which we refer to as refined local divergence. We then apply these general bounds to obtain results for some specific networks. For constant-degree expanders and torus graphs, these yield exponential improvements on the discrepancy bounds. For hypercubes we obtain a polynomial improvement

Nietzsche on Film

This is the final version of the article. Available from Edinburgh University Press via the DOI in this record.This article tracks the many appearances of Friedrich Nietzsche throughout the history of cinema. It asks how cinema can do Nietzschean philosophy in ways that are unique to the medium. It also asks why the cinematic medium might be so pertinent to Nietzschean philosophy. Adhering to the implicit premise that, as Jacques Derrida once put it, ‘there is no totality to Nietzsche's text, not even a fragmentary or aphoristic one,’ the essay's mode of argument avoids reductive totalization and instead comprises a playful sampling of variously Nietzschean manifestations across dissimilar films. It begins with an extended account of Baby Face, a 1933 drama from which the abundant references to Nietzsche were either altered or expunged ahead of theatrical release. It then maps some of the philosophical consistencies across two genres in which characters read Nietzsche with apparent frequency: the comedy and the thriller. While comedies and thrillers both treat Nietzsche and his readers with suspicion, and do so for perceptive historical reasons, the essay then asks what an affirmatively Nietzschean film might look like. It explores this possibility through a discussion of cinematic animation in general and then more specifically via several critically familiar films that self-consciously evolve their aesthetic through Nietzsche's philosophy. The essay concludes by affirming Béla Tarr's final film as one of the medium's greatest realizations of a Nietzschean film-philosophy. The Turin Horse, released in 2011, is exemplary because it takes Nietzsche as a narrative premise only to sublate that premise into a unique visual style