Hartree-Fock theory for pseudorelativistic atoms

We study the Hartree-Fock model for pseudorelativistic atoms, that is, atoms where the kinetic energy of the electrons is given by the pseudorelativistic operator \sqrt{(pc)^2+(mc^2)^2}-mc^2. We prove the existence of a Hartree-Fock minimizer, and prove regularity away from the nucleus and pointwise exponential decay of the corresponding orbitals

Towards a Typology of Interdisciplinarity in Cybersecurity:Trade, Choice, and Agnostic-Antagonist

Cybersecurity research increasingly involves non-engineering disciplines, such as psychology, social science and law [41]. In this paper, we argue that cybersecurity research is not only reshaped through new methods and concepts of these adjacent fields, but also through shared interdisciplinary practices. Existing literature on interdisciplinarity in cybersecurity is primarily concerned with defining ideal models that are based on ideals, rather than in empirical research of how interdisciplinarity is formed in practice. We offer an ethnographic analysis of interdisciplinary formats based on our four-year participation in the ongoing interdisciplinary cybersecurity PhD programme SecHuman at the Ruhr-University Bochum, Germany. The PhD programme brings together engineers, social scientists as well as humanities scholars. Drawing on methods and literature of ethnographic science and technology studies (STS), we attend to eight different interdisciplinary formats and analyse how they shape cybersecurity research: its logics of accountability, of innovation, and of ontology [3]. This leads to a typology of five modes of interdisciplinarity that can be found in the PhD programme: 1. choice, 2. subordinate-service, 3. integrative-synthetic, 4. trading, and 5. agonistic-antagonistic. Based on our empirical findings, we discuss how each mode shapes cybersecurity, and conclude with suggestions of how to craft interdisciplinary formats in the field

Task dialog by native-Danish talkers in Danish and English in both quiet and noise

The zip files contain recorded conversations between 19 pairs of normal-hearing native-Danish talkers taking part in an experiment in the lab of the Hearing Systems Group at The Technical University of Denmark during October-November 2016. Each participant pair conversed in each of four conditions: - In their first language (Danish) without background noise (L1-quiet) - In their first language (Danish) with background noise (L1-noise) - In their second language (English) without background noise (L2-quiet) - In their second language (English) with background noise (L2-noise) The conversations were recorded in three blocks with a break between each block. Each block consisted of a conversation from each of the four conditions (in a random order). In each conversation, the pairs found 10 differences between two almost identical pictures (DiapixUK; Baker and Hazan, 2011). The pictures were randomized across conditions. The background noise was a mixed-gender 6-talker babble-like vocoded noise (ICRA 7, Dreschler et al. (2001)). The pairs were seated in separate sound booths and could not see each other. Each talker wore a Shure WH20 microphone (close mic) along with a pair of Sennheiser HD650 headphones. An operator sat outside the door monitoring the conversations and had the opportunity to talk to the participants through an operator microphone. In the headphones, both talkers heard a mix of themselves, their conversational partner, and the background noise (in the noise conditions). The gains were set and held constant such that the speech level presented by the headphones was the same as the level in the soundbooth 1 m away from the talker. In total four channels were recorded using an RME Fireface 802 soundcard at 24 bit, 48 kHz, with Matlab 2016a: Channel 1: the microphone of Talker 1 Channel 2: the microphone of Talker 2 Channel 3: the operator microphone Channel 4: The mix sent to the headphones Prior to recording, all 20 pairs provided written consent for the recordings to be used in the conversation experiment. After the recordings had been completed, we recognized that these recordings might be useful for others. Thus we approached the participants and asked if they would be willing to make the recordings publicly available. 19 out of the 20 pairs gave written consent to make the recordings publicly available. However, pair 12 asked that one of their conversations not be made publicly available (the third replicate of the conversation in Danish in quiet). Thus, this conversation and the conversations from the pair that did not provide written consent to make the recordings public (pair 9) are not included here. The file "Recordings_4channel_48kHz_24bit.zip" contains the original recordings. When uncompressed, the wav files are approximately 42 GB in total. The file "Recordings_2channel_22050Hz_16bit.zip" contains only channels 1 and 2 (the microphones from both talkers) from the recordings, which have been downsampled to 22050 Hz and rescaled as 16 bit wav files. When uncompressed, the wav files are approximately 6.4 GB in total. In both zip files, there are individual wav files for each conversation and the file names are structured as follows: TalkerPair_Condition_Replicate.wav. For any questions, please contact Anna Josefine Sørensen: [email protected] or Ewen MacDonald: [email protected] References: R. Baker and V. Hazan. DiapixUK: task materials for the elicitation of multiple spontaneous speech dialogs. Behavior Research Methods, 43(3):761–770, 2011. ISSN 1554-3528. doi: 10.3758/s13428-011-0075-y. W. Dreschler, H. Verschuure, C. Ludvigsen, and S. Westermann. ICRA Noises: Artificial Noise Signals with Speech-like Spectral and Temporal Properties for Hearing Instrument Assessment: Ruidos ICRA: Señates de ruido artificial con espectro similar al habla y propiedades temporales para pruebas de instrumentos auditiv. International Journal of Audiology, 40(3):148–157, 2001. ISSN 1499-2027. doi: 10.3109/00206090109073110