The Almost Nothing of the Unpresentable : the Experience of My Death in the thought of Jacques Derrida

This thesis argues that the understanding of Derrida’s major concepts of différance, trace, and writing requires the reference to the impossible experience of my death as having always already occurred. The thesis tries to make this experience explicit with reference to the work of Blanchot and Heidegger. Having argued that an experience of “I am dead” is the bedrock of Derrida’s early concepts and the deconstruction of the metaphysics of presence, the last chapter shows the centrality of this experience to the undoing of the animal/human binary. Coterminous with an experience of a disjointed temporality, the radical evil and expropriation of the posthumous survival of one’s own death is a kind of suffering that has received innumerable material instantiations in our era. It thereby urgently calls forth an ethical response and forms the condition of the possibility of justice

Contributors

Biographical information on contributors to volume 38, and a list of benefactors and donor

Table of Contents and Prologue

Editorial board, table of contents, and a prologue from the editor

Structure of the Nucleon and its Excitations

The structure of the ground state nucleon and its finite-volume excitations are examined from three different perspectives. Using new techniques to extract the relativistic components of the nucleon wave function, the node structure of both the upper and lower components of the nucleon wave function are illustrated. A non-trivial role for gluonic components is manifest. In the second approach, the parity-expanded variational analysis (PEVA) technique is utilised to isolate states at finite momenta, enabling a novel examination of the electric and magnetic form factors of nucleon excitations. Here the magnetic form factors of low-lying odd-parity nucleons are particularly interesting. Finally, the structure of the nucleon spectrum is examined in a Hamiltonian effective field theory analysis incorporating recent lattice-QCD determinations of low-lying two-particle scattering-state energies in the finite volume. The Roper resonance of Nature is observed to originate from multi-particle coupled-channel interactions while the first radial excitation of the nucleon sits much higher at approximately 1.9 GeV.Comment: 8 pages, 4 figures. Proceedings of the 35th International Symposium on Lattice Field Theory (Lattice 2017), 18 - 24 June 2017, Granada, Spai

A Novel Perspective to Look At Attention: Bi-level Attention-based Explainable Topic Modeling for News Classification

Many recent deep learning-based solutions have widely adopted the attention-based mechanism in various tasks of the NLP discipline. However, the inherent characteristics of deep learning models and the flexibility of the attention mechanism increase the models' complexity, thus leading to challenges in model explainability. In this paper, to address this challenge, we propose a novel practical framework by utilizing a two-tier attention architecture to decouple the complexity of explanation and the decision-making process. We apply it in the context of a news article classification task. The experiments on two large-scaled news corpora demonstrate that the proposed model can achieve competitive performance with many state-of-the-art alternatives and illustrate its appropriateness from an explainability perspective.Comment: Findings of ACL202

Hamiltonian effective field theory study of the N∗(1440)\mathbf{N^*(1440)} resonance in lattice QCD

We examine the phase shifts and inelasticities associated with the $N^*(1440)$ Roper resonance and connect these infinite-volume observables to the finite-volume spectrum of lattice QCD using Hamiltonian effective field theory. We explore three hypotheses for the structure of the Roper resonance. All three hypotheses are able to describe the scattering data well. In the third hypothesis the Roper resonance couples the low-lying bare basis-state component associated with the ground state nucleon with the virtual meson-baryon contributions. Here the non-trivial superpositions of the meson-baryon scattering states are complemented by bare basis-state components explaining their observation in contemporary lattice QCD calculations. The merit of this scenario lies in its ability to not only describe the observed nucleon energy levels in large-volume lattice QCD simulations but also explain why other low-lying states have been missed in today's lattice QCD results for the nucleon spectrum.Comment: 14 pages, 14 figures; version to be published in Phys. Rev.