cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Amisulpride does not influence facial mimicry of happy and angry expressions
Creators: name: Seewald, Conrad Theodor
Year: 2025

description: Gesichtsmimikry beschreibt die Tendenz, beobachtete Gesichtsausdrücke zu imitieren, was eine zentrale Rolle in sozialen Interaktionen spielt. Frühere Forschung deutet darauf hin, dass das dopaminerge System, insbesondere der mesolimbische Pfad, an der Belohnungsverarbeitung und sozialen Verhaltensweisen beteiligt ist. Diese Studie untersucht, ob das Blockieren von Dopamin-D2/D3-Rezeptoren durch Amisulprid die Gesichtsmimikry fröhlicher und wütender Gesichtsausdrücke beeinflusst. In einer randomisierten, doppelblinden, Placebo kontrollierten Studie erhielten 39 gesunde Versuchsteilnehmende entweder 400 mg Amisulprid oder ein Placebo. Die Aktivität der Muskeln Zygomaticus major und Corrugator supercilii wurde mittels Elektromyografie gemessen, während die Versuchspersonen Videos dynamischer Gesichtsausdrücke anschauten, die von fröhlich zu wütend oder umgekehrt morphten. Die Ergebnisse zeigen, dass sich die Muskelaktivität über die Zeit hinweg signifikant veränderte. Jedoch konnten keine signifikanten Unterschiede zwischen der Amisulprid- und der Placebogruppe festgestellt werden. Diese Ergebnisse zeigen, dass das Blockieren der mesolimbischen Dopamin-D2/D3-Rezeptoren keine Auswirkungen auf die Gesichtsmimikry hat. Das könnte ein Hinweis sein, dass andere Neurotransmittersysteme für diesen Prozess relevanter sind. Zukünftige Studien sollten alternative Signalwege sowie die potenzielle Rolle von Dopamin in sozialen und affektiven Funktionen weiter untersuchen.
description: Facial mimicry is the tendency to imitate observed facial expressions, which plays a crucial role in social interactions. Previous research suggests that the dopaminergic system, particularly the mesolimbic pathway, is involved in reward processing and social behavior. This study investigates whether blocking dopamine D2/D3 receptors with Amisulpride affects FM in response to happy and angry facial expressions. A randomized, double-blind, placebocontrolled experiment was conducted with 39 healthy participants, who received either 400 mg of Amisulpride or a placebo. Electromyographic activity of the Zygomaticus major and Corrugator supercilii muscles was recorded while participants observed dynamic facial expressions morphing from happy to angry or vice versa. Results showed that muscle activity changed significantly over time in both conditions, but no significant differences were found between the Amisulpride and placebo groups. These findings suggest that mesolimbic dopamine D2/D3 receptor antagonism does not influence facial mimicry, indicating that other neurotransmitter systems may be more relevant for this process. Future research should explore alternative pathways and the potential role of dopamine in broader social and affective functions.
Transcription of "Verdena's Life Story, Part 1"
Creators: name: Parker, Verdena
name: Spence, Justin
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2022
Subjects: subject: hup

description: Audio files VP-060909-02a/c and VP-060909-03: Transcription of Verdena's Life Story, Part 1 (file VP-121106-01), from 4:52 to 6:27 (VP-060909-02a/c) and from 6:27 to 8:13 (VP-060909-03).
Identifying the location of the drug binding site(s) in P-glycoprotein
Creators: name: Mittra, Ritu
Publisher: name: The Australian National University
Year: 2022

description: P-glycoprotein (P-gp), an ABC transporter protein, is characterized by its ability to recognize, bind, and efflux over 300 chemically and structurally unrelated compounds. P-gp overexpression in cancer cells confers multidrug resistance (MDR) by preventing sufficient accumulation of anticancer drugs within the cell, thus avoiding their cytotoxic effects. P-gp harnesses the energy from ATP hydrolysis to translocate substrates across the plasma membrane against a concentration gradient. Biochemical and structural investigations have identified the presence of a large aqueous central cavity which is likely the location for the drug binding sites (DBSs). The substrate polyspecificity displayed by P-gp is imparted by the existence of at least four pharmacologically distinct DBSs located within the transmembrane domain (TMD). However, whether these sites are spatially distinct from each other was not clear. The current investigation has identified several key contact residues of four pharmacologically distinct substrates/modulators of P-gp (nicardipine, vinblastine, rhodamine 123, and paclitaxel), known to bind at the four identified sites. Seven residues in various TMDs were mutated to a cysteine. Biochemical assays using purified, reconstituted P-gp expressing each mutant isoform was used to identify which contact residues were implicated in the binding of each drug. For rhodamine 123 binding, the identified contact residues were located within the central cavity of P-gp. However, for vinblastine, paclitaxel, and nicardipine, the implicated contact residues were located at the lipid-protein interface rather than the central cavity. A key residue (F978) located within the central cavity is believed to be involved in the interdomain communication between the TMDs and the nucleotide binding domains (NBD; site of ATP hydrolysis). Collectively, data presented here suggests the existence of at least four spatially distinct drug binding sites that are connected by a single translocation pore in the central cavity.
On the Interpretability of Deep Learning Based Models for Knowledge Tracing
Creators: name: Ding, Xinyi
name: Larson, Eric C.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Computers and Society (cs.CY)
subject: FOS: Computer and information sciences

description: Knowledge tracing allows Intelligent Tutoring Systems to infer which topics or skills a student has mastered, thus adjusting curriculum accordingly. Deep Learning based models like Deep Knowledge Tracing (DKT) and Dynamic Key-Value Memory Network (DKVMN) have achieved significant improvements compared with models like Bayesian Knowledge Tracing (BKT) and Performance Factors Analysis (PFA). However, these deep learning based models are not as interpretable as other models because the decision-making process learned by deep neural networks is not wholly understood by the research community. In previous work, we critically examined the DKT model, visualizing and analyzing the behaviors of DKT in high dimensional space. In this work, we extend our original analyses with a much larger dataset and add discussions about the memory states of the DKVMN model. We discover that Deep Knowledge Tracing has some critical pitfalls: 1) instead of tracking each skill through time, DKT is more likely to learn an `ability' model; 2) the recurrent nature of DKT reinforces irrelevant information that it uses during the tracking task; 3) an untrained recurrent network can achieve similar results to a trained DKT model, supporting a conclusion that recurrence relations are not properly learned and, instead, improvements are simply a benefit of projection into a high dimensional, sparse vector space. Based on these observations, we propose improvements and future directions for conducting knowledge tracing research using deep neural network models.
Additional file 3 of Integrated large-scale metagenome assembly and multi-kingdom network analyses identify sex differences in the human nasal microbiome
Creators: name: Ju, Yanmei
name: Zhang, Zhe
name: Liu, Mingliang
name: Lin, Shutian
name: Sun, Qiang
name: Song, Zewei
name: Liang, Weiting
name: Tong, Xin
name: Jie, Zhuye
name: Lu, Haorong
name: Cai, Kaiye
name: Chen, Peishan
name: Jin, Xin
name: Zhang, Wenwei
name: Xu, Xun
name: Yang, Huanming
name: Wang, Jian
name: Hou, Yong
name: Xiao, Liang
name: Jia, Huijue
name: Zhang, Tao
name: Guo, Ruijin
Publisher: name: figshare
Year: 2024
Subjects: subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Genetics
subject: Ecology
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Cancer
subject: Infectious Diseases
subject: FOS: Health sciences

description: Additional file 3. Contains the review history.
Low-Power Audio Keyword Spotting using Tsetlin Machines
Creators: name: Lei, Jie
name: Rahman, Tousif
name: Shafik, Rishad
name: Wheeldon, Adrian
name: Yakovlev, Alex
name: Granmo, Ole-Christoffer
name: Kawsar, Fahim
name: Mathur, Akhil
Publisher: name: arXiv
Year: 2021
Subjects: subject: Audio and Speech Processing (eess.AS)
subject: Sound (cs.SD)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: The emergence of Artificial Intelligence (AI) driven Keyword Spotting (KWS) technologies has revolutionized human to machine interaction. Yet, the challenge of end-to-end energy efficiency, memory footprint and system complexity of current Neural Network (NN) powered AI-KWS pipelines has remained ever present. This paper evaluates KWS utilizing a learning automata powered machine learning algorithm called the Tsetlin Machine (TM). Through significant reduction in parameter requirements and choosing logic over arithmetic based processing, the TM offers new opportunities for low-power KWS while maintaining high learning efficacy. In this paper we explore a TM based keyword spotting (KWS) pipeline to demonstrate low complexity with faster rate of convergence compared to NNs. Further, we investigate the scalability with increasing keywords and explore the potential for enabling low-power on-chip KWS.
description: 20 pp
Αυτόματα με βάρη και ψηφιακή επεξεργασία εικόνας:
Creators: name: Ιντζές, Στέργιος Γεωργίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2008
Subjects: Αυτόματα με βάρη
Ψηφιακή επεξεργασία εικόνας
Μεταγωγείς με βάρη
Σειρές γλωσσών
Αφφινικά αυτόματα
Συμπίεση εικόνας
Compression of image
Fractal image
IFS, MRFS
Affine expressions
Multiresolution
Inference algorithm

description: Στη διπλωματική αυτή ασχοληθήκαμε με την συμπίεση εικόνων μέσω αυτόματων με βάρη. Η συμπίεση πραγματοποιείται από τη στιγμή που θα κατασκευάσουμε το αυτοματο. Εχουμε επίσης θεωρήματα όσον αφορά την κατασκευή των ελαχίστων Αυτομάτων. Ακόμη έχουμε και τους μεταγωγείς με βάρη που μετασχηματίζουν μια εικόνα ανάλογα με τις ανάγκες μας. Τέλος έχουμε ασχοληθεί και με συμπίεση εικόνων με fractals.
description: In this master thesis we introduce the compression of image through weighted Finite Automata. The compression is implemented when we manage to construct the weighted Automaton. Furthermore, we have the transducers which they transform the given images as we want. Moreover we have theorems about the construction of minimal Automata. Final we deal with compression of fractal images.
First polarimetric measurements and modeling of the Paschen-Back effect in CaH transitions
Creators: name: Berdyugina, S. V.
name: Fluri, D. M.
name: Ramelli, R.
name: Bianda, M.
name: Gisler, D.
name: Stenflo, J. O.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report the first spectropolarimetric observations and modeling of CaH transitions in sunspots. We have detected strong polarization signals in many CaH lines from the A-X system, and we provide the first successful fit to the observed Stokes profiles using the previously developed theory of the Paschen-Back effect in arbitrary electronic states of diatomic molecules and polarized radiative transfer in molecular lines in stellar atmospheres. We analyze the CaH Stokes profiles together with quasi-simultaneous observations in TiO bands and conclude that CaH provides a valuable diagnostic of magnetic fields in sunspots, starspots, cool stars, and brown dwarfs.
Additional file 1 of Clinical symptoms, comorbidities and health outcomes among outpatients infected with the common cold coronaviruses versus influenza virus
Creators: name: Iyadorai, Thevambiga
name: Lim, Sin How
name: Wong, Pui Li
name: Sii, Hoe Leong
name: P’ng, Chun Keat
name: Ee, Soon Sean
name: Tan, Maw Pin
name: Hanafi, Nik Sherina
name: Ng, Kim Tien
name: Chook, Jack Bee
name: Takebe, Yutaka
name: Chan, Kok-Gan
name: Singh, Sarbhan
name: Sam, I-Ching
name: Tee, Kok Keng
Publisher: name: figshare
Year: 2024
Subjects: subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: Immunology
subject: FOS: Clinical medicine
subject: Cancer
subject: Mental Health
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Virology
subject: Computational Biology

description: Supplementary Material 1
A dynamically reconfigurable and extensible operating system
Creators: name: Veitch, Alistair Craig
Publisher: name: University of British Columbia
Year: 2009

description: Operating systems are constantly getting more complex in the functionality they support, due to the increasing demands made by modem hardware and software innovations. Basingjhe kernel design on co-operating and modular services incorportating a flexible communications infrastructure with run-time binding makes the operating system dynamically configurable and extensible. These features aid in the management of system complexity, while also resulting in several software engineering and performance benefits. Configurability gives the operating system designer and implementor the freedom to build a large number of components, which can be composed into different configurations depending upon the final system requirements. System components can be built and debugged in a user address space, and then transparently migrated into the kernel address space for performance once they have been demonstrated correct. This removes one of the major obstacles to developing kernel services, that of the necessity to reboot the system after each change to the service code. The system administrator can also reconfigure the system, providing similar advantages, and allowing dynamic system upgrades to be made, reducing system downtime. Extensibility lets new functionality be integrated into the operating system. This can be done on an application specific basis. This enables the development of in-kemel applications in cases where high performance is required, such as for dedicated file servers. It is also possible for applications to interpose specialised kernel services, allowing them to dramatically increase their performance and aggregate system throughput when the default system policies are ill-matched to their behaviour. The Kea operating system has been designed and implemented to be dynamically configurable and extensible. The design of the system features that make these features possible are described. Experimental results are shown that demonstrate that Kea offers comparable performance to a traditional operating system on the same hardware, and that extensibility can be used to increase performance for selected applications.
Quantum versus thermal fluctuations in the fcc antiferromagnet: alternative routes to order by disorder
Creators: name: Schick, R.
name: Ziman, T.
name: Zhitomirsky, M. E.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: In frustrated magnetic systems with competing interactions fluctuations can lift the residual accidental degeneracy. We argue that the state selection may have different outcomes for quantum and thermal order by disorder. As an example, we consider the semiclassical Heisenberg fcc antiferromagnet with only the nearest-neighbor interactions. Zero-point oscillations select the type 3 collinear antiferromagnetic state at T=0. Thermal fluctuations favor instead the type 1 antiferromagnetic structure. The opposite tendencies result in a finite-temperature transition between the two collinear states. Competition between effects of quantum and thermal order by disorder is a general phenomenon and is also realized in the J1-J2 square-lattice antiferromagnet at the critical point J2 = 0.5 J1.
description: 6 pages, 3 figures (accepted PRB Rapid Comm.)
Spatially Resolved Kinematics of gas and stars in hidden type 1 AGNs
Creators: name: Son, Donghoon
name: Woo, Jong-Hak
name: Eun, Da-In
name: Cho, Hojin
name: Karouzos, Marios
name: Park, Songyeon
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present the spatially resolved gas and stellar kinematics of a sample of ten hidden type 1 AGNs in order to investigate the true nature of the central source and the scaling relation with host galaxy stellar velocity dispersion. The sample is selected from a large number of hidden type 1 AGN, which are identified based on the presence of a broad component in the \ha\ line profile (i.e., full-width-at-half-maximum $>$ $\sim$1000 \kms), while they are often mis-classified as type 2 AGN because AGN continuum and broad emission lines are weak or obscured in the optical spectral range. We used the Blue Channel Spectrograph at the 6.5-m MMT (Multiple Mirror Telescope) to obtain long-slit data. We detected a broad \hb\ for only two targets, however, the presence of a strong broad \ha\ indicates that these AGNs are low-luminosity type 1 AGNs. We measured the velocity, velocity dispersion and flux of stellar continuum and gas emission lines (i.e., \hb\ and \oiii) as a function of distance from the center with a spatial scale of 0.3 arcsec pixel$^{-1}$. Spatially resolved gas kinematics traced by \hb\ or \oiii\ are generally similar to stellar kinematics except for the very center, where signatures of gas outflows are detected. We compare the luminosity-weighted effective stellar velocity dispersion with black hole mass, finding that these hidden type 1 AGN with relatively low back hole mass follow the scaling relation of the reverberation-mapped type 1 AGN and more massive inactive galaxies. }
description: 13 pages, 9 figures, 2 tables, Accepted for Journal of the Korean Astronomical Society
Additional file 2 of Clinical symptoms, comorbidities and health outcomes among outpatients infected with the common cold coronaviruses versus influenza virus
Creators: name: Iyadorai, Thevambiga
name: Lim, Sin How
name: Wong, Pui Li
name: Sii, Hoe Leong
name: P’ng, Chun Keat
name: Ee, Soon Sean
name: Tan, Maw Pin
name: Hanafi, Nik Sherina
name: Ng, Kim Tien
name: Chook, Jack Bee
name: Takebe, Yutaka
name: Chan, Kok-Gan
name: Singh, Sarbhan
name: Sam, I-Ching
name: Tee, Kok Keng
Publisher: name: figshare
Year: 2024
Subjects: subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: Immunology
subject: FOS: Clinical medicine
subject: Cancer
subject: Mental Health
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Virology
subject: Computational Biology

description: Supplementary Material 2
Nonlinear wave patterns in the complex KdV and nonlinear Schrodinger equations
Creators: name: Crabb, Matthew
Publisher: name: The Australian National University
Year: 2022

description: This thesis is on the theory of nonlinear waves in physics. To begin with, we develop from first principles the theory of the complex Korteweg-de Vries (KdV) equation as an equation for the complex velocity of a weakly nonlinear wave in a shallow, ideal fluid. We show that this is completely consistent with the well-known theory of the real KdV equation as a special case, but has the advantage of directly giving complete information about the motion of all particles within the fluid. We show that the complex KdV equation also has conserved quantities which are completely consistent with the physical interpretation of the real KdV equation. When a periodic wave solution to the real KdV equation is expanded in the quasi-monochromatic approximation, it is known that the amplitude of the wave envelope is described by the nonlinear Schrodinger (NLS) equation. However, in the complex KdV equation, we show that the fundamental modes of the velocity are described by the split NLS equations, themselves a special case of the Ablowitz-Kaup-Newell-Segur system. This is a directly physical interpretation of the split NLS equations, which were primarily introduced as only a mathematical construct emerging from the Zakharov-Shabat equations. We also discuss an empirically obtained symmetry of the rational solutions to the KdV equations, which seems to have been unnoticed until now. Solutions which can be written in terms of Wronskian determinants are well-known; however, we show that these are actually part of a more general family of rational solutions. We show that a linear combination of the Wronskians of orders $n$ and $n+2$ generates a new, multi-peak rational solution to the KdV equation. We next move on to the integrable extensions of the NLS equation. These incorporate higher order nonlinear and dispersive terms in such a way that the system keeps the same conserved quantities, and is thus completely integrable. We obtain the general solution of the doubly-periodic solutions of the class I extension of the NLS equation, and discuss several special cases. These are the most general one-parameter first order solutions of the (class I) extended NLS equation. Building on this, we also discuss second order solutions to the extended NLS equation. We obtain the general 2-breather solutions, and discuss several special cases; among them, semirational breathers, the degenerate breather solution, the second-order rogue wave, and the rogue wave triplet solution. We also discuss the breather to soliton conversion, which is a solution which does not exist in the basic NLS equation where only the lowest order dispersive and nonlinear terms are present. Finally, we discuss a few possibilities for future research based on the work done in this thesis.
A diffuse interface box method for elliptic problems
Creators: name: Negrini, G.
name: Parolini, N.
name: Verani, M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 65N08, 65N85

description: We introduce a diffuse interface box method (DIBM) for the numerical approximation on complex geometries of elliptic problems with Dirichlet boundary conditions. We derive a priori $H^1$ and $L^2$ error estimates highlighting the rôle of the mesh discretization parameter and of the diffuse interface width. Finally, we present a numerical result assessing the theoretical findings.
description: 10 pages, 5 figures, submitted on Applied Mathematics Letters
The effects of fire on the Southern Long-nosed Bandicoot (Perameles nasuta Geoffroy) in a highly heterogeneous landscape
Creators: name: MacGregor, Christopher
Publisher: name: The Australian National University
Year: 2022

description: Management of fire and fire regimes is an important part of reserve management. In Australia, fire is used as a management tool to protect human infrastructure and cultural and natural assets. It is also used in reserve management to reduce fuel loads and promote the regrowth of fire-dependent vegetation. Many vertebrate species depend upon the naturally occurring spatial mosaic of burnt and unburnt vegetation for survival with some taxa being associated with frequent fires while others are fire-sensitive and cannot tolerate frequent disturbances such as fires. In this thesis, I present the results of a long-term study of the terrestrial marsupial the Long-nosed Bandicoot (Perameles nasuta) in a highly heterogeneous and fire-prone landscape. I studied the species at Booderee National Park where there was a major wildfire in 2003 and other smaller wildfires since that time. Understanding how animals use heterogeneous environments and how disturbances such as fire influence habitat use is vital for wildlife management. I found that the Long-nosed Bandicoot showed a preference for particular types of vegetation in which to forage, especially unburnt vegetation. While fire did not significantly alter home-range size, it did influence the way animals used their home range. It is also important for wildlife management to determine the spatial and temporal pattern of refugia used within a heterogeneous landscape affected by fire. Sixty per cent of nests of the Long-nosed Bandicoot within the footprint of burnt forest and woodland habitat were in unburnt patches. These nests were significantly larger and were used more frequently than nests located in burnt microhabitat. Within areas broadly subject to fire, the Long-nosed Bandicoot typically constructed nests located in unburnt areas with dense grasses and a dense midstorey. However, the species also nested in open areas and responded to fire-affected areas by constructing smaller nests. It is also important to consider temporal and spatial scales in the management of biodiversity. In the short term, the wildfire affected how individual Long-nosed Bandicoots associated with their immediate habitat but in the longer term, it had limited effect on where they occurred in the broader landscape. I found that the spatial occurrence of the Long-nosed Bandicoot at Booderee National Park was more likely to be influenced by the relative amount of leaf litter than it was by the 2003 wildfire.
Additional file 3 of Clinical symptoms, comorbidities and health outcomes among outpatients infected with the common cold coronaviruses versus influenza virus
Creators: name: Iyadorai, Thevambiga
name: Lim, Sin How
name: Wong, Pui Li
name: Sii, Hoe Leong
name: P’ng, Chun Keat
name: Ee, Soon Sean
name: Tan, Maw Pin
name: Hanafi, Nik Sherina
name: Ng, Kim Tien
name: Chook, Jack Bee
name: Takebe, Yutaka
name: Chan, Kok-Gan
name: Singh, Sarbhan
name: Sam, I-Ching
name: Tee, Kok Keng
Publisher: name: figshare
Year: 2024
Subjects: subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: Immunology
subject: FOS: Clinical medicine
subject: Cancer
subject: Mental Health
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Virology
subject: Computational Biology

description: Supplementary Material 3
The United Nations Basic Space Science Initiative: The TRIPOD concept
Creators: name: Kitamura, M.
name: Wentzel, D.
name: Henden, A. A.
name: Bennett, J.
name: Al-Naimiy, H. M. K.
name: Mathai, A. M.
name: Gopalswamy, N.
name: Davila, J.
name: Thompson, B.
name: Webb, D. F.
name: Haubold, H. J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: Since 1990, the United Nations is annually holding a workshop on basic space science for the benefit of the worldwide development of astronomy. Additional to the scientific benefits of the workshops and the strengthening of international cooperation, the workshops lead to the establishment of astronomical telescope facilities through the Official Development Assistance (ODA) of Japan. Teaching material, hands-on astrophysics material, and variable star observing programmes had been developed for the operation of such astronomical telescope facilities in an university environment. This approach to astronomical telescope facility, observing programme, and teaching astronomy has become known as the basic space science TRIPOD concept. Currently, a similar TRIPOD concept is being developed for the International Heliophysical Year 2007, consisting of an instrument array, data taking and analysis, and teaching space science.
description: 8 pages, LaTeX
High temperature metamaterial terahertz quantum detector
Creators: name: Jeannin, Mathieu
name: Bonazzi, Thomas
name: Gacemi, Djamal
name: Vasanelli, Angela
name: Suffit, Stéphan
name: Li, Lianhe
name: Davies, Alexander Giles
name: Linfield, Edmund
name: Sirtori, Carlo
name: Todorov, Yanko
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optics (physics.optics)
subject: Applied Physics (physics.app-ph)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: We demonstrate a high temperature performance quantum detector of Terahertz (THz) radiation based on three-dimensional metamaterial. The metamaterial unit cell consists of an inductor-capacitor (LC) resonator laterally coupled with antenna elements. The absorbing region, consisting of semiconductor quantum wells is contained in the strongly ultra-subwavelength capacitors of the LC structure. The high radiation loss of the antenna allows strongly increased collection efficiency for the incident THz radiation, while the small effective volume of the LC resonator allows intense light-matter coupling with reduced electrical area. As a result, our detectors operates at much higher temperatures than conventional quantum well detectors demonstrated so far.
Minutes of the Annual Meeting of the Rainbow Ranche Limited, April 30, 1936
Creators: name: Rainbow Ranche
Publisher: name: The University of British Columbia
Year: 2017

description: Minutes of the Annual Meeting of the Rainbow Ranche Limited, dated April 30, 1936, signed by James Goldie, J.E. McAllister, Jessie Ross Goldie and R.S. Dormer.
Observations and Spectral Modelling of the Narrow-Lined Type Ic SN 2017ein
Creators: name: Teffs, Jacob
name: Prentice, Simon J.
name: Mazzali, Paolo
name: Ashall, Chris
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: SN 2017ein is a narrow-lined Type Ic SN that was found to share a location with a point-like source in the face on spiral galaxy NGC 3938 in pre-supernova images, making SN 2017ein the first credible detection of a Type Ic progenitor. Results in the literature suggest this point-like source is likely a massive progenitor of 60-80 M$_{\odot}$, depending on if the source is a binary, a single star, or a compact cluster. Using new photometric and spectral data collected for 200 days, including several nebular spectra, we generate a consistent model covering the photospheric and nebular phase using a Monte Carlo radiation transport code. Photospheric phase modelling finds an ejected mass 1.2-2.0 M$_{\odot}$ with an $E_\mathrm{k}$ of $\sim(0.9 \pm0.2)\times 10^{51}$ erg, with approximately 1 M$_{\odot}$ of material below 5000 km s$^{-1}$ found from the nebular spectra. Both photospheric and nebular phase modelling suggests a $^{56}$Ni mass of 0.08-0.1 M$_{\odot}$. Modelling the [\OI] emission feature in the nebular spectra suggests the innermost ejecta is asymmetric. The modelling results favour a low mass progenitor of to 16-20 M$_{\odot}$, which is in disagreement with the pre-supernova derived high mass progenitor. This contradiction is likely due to the pre-supernova source not representing the actual progenitor.
description: 15 pages, 13 figures. Accepted for publication by MNRAS
A framework for multi-notation, model-oriented requirements analysis
Creators: name: Day, Nancy Ann
Publisher: name: University of British Columbia
Year: 2009

description: This dissertation addresses the problem of how to bring the benefits of formal analysis to the changing world of multi-notation requirements specifications. We show that direct use of the formal operational semantics for notations in higher-order logic produces an extensible, systematic and rigorous approach to solving this problem. Our approach achieves the desired qualities without requiring theorem proving infrastructure. We concentrate on model-oriented notations that use uninterpreted constants to filter non-essential details. A key contribution is the de-coupling of notation from analysis technique. We use type checking to regulate combinations of notations. Specifications are represented using embeddings that package the meaning of the notation with its syntax. We demonstrate our approach using combinations of the following three notations: statecharts, decision tables, and higher-order logic. We introduce a new automatic technique called symbolic functional evaluation (SFE) to evaluate semantic functions outside of a theorem proving environment. SFE produces the meaning of a specification. Direct use of the semantics ensures that the same meaning for a specification is used by all types of analysis. SFE extends the technique of lazy evaluation to handle uninterpreted constants. We focus on the binary decision diagram (BDD)-based analysis techniques of completeness and consistency checking of tables, simulation, and symbolic model checking. To bridge the gap between higher-order logic and automated analysis techniques, we create a toolkit of common techniques, such as Boolean abstraction. We show that information contained in the structure of a specification can be used to supplement BDD-based analysis approaches by producing a more precise abstraction of the specification. The partition of a numeric value specified by entries in a row of a table provides information on how to encode numeric values in a BDD. Our approach is demonstrated by the specification and analysis of two large real-world systems: a separation minima for aircraft and the Aeronautical Telecommunications Network (ATN). In the separation minima example, analysis discovered inconsistencies previously unknown to domain experts. In the ATN example, several errors in the formal-isation process were exposed. In both cases, we achieved the benefits of multiple notations for specification without sacrificing automation in analysis.
A theoretical framework of BL Her stars. I. Effect of metallicity and convection parameters on period-luminosity and period-radius relations
Creators: name: Das, Susmita
name: Kanbur, Shashi M.
name: Smolec, Radoslaw
name: Bhardwaj, Anupam
name: Singh, Harinder P.
name: Rejkuba, Marina
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present a new grid of convective BL Herculis models using the state-of-the-art 1D non-linear radial stellar pulsation tool MESA-RSP. We investigate the impact of metallicity and four sets of different convection parameters on multi-wavelength properties. Non-linear models were computed for periods typical for BL Her stars, i.e. $1 \leq \mathrm{P (days)} \leq 4$ covering a wide range of input parameters - metallicity ($-2.0\; \mathrm{dex} \leq \mathrm{[Fe/H]} \leq 0.0\; \mathrm{dex}$), stellar mass (0.5M$_{\odot}$-0.8M$_{\odot}$), luminosity (50L$_{\odot}$-300L$_{\odot}$) and effective temperature (full extent of the instability strip; in steps of 50K). The total number of BL Her models with full-amplitude stable pulsations used in this study is 10280 across the four sets of convection parameters. We obtain their multiband ($UBVRIJHKLL'M$) light curves and derive new theoretical period-luminosity ($PL$), period-Wesenheit ($PW$) and period-radius ($PR$) relations at mean light. We find that the models computed with radiative cooling show statistically similar slopes for $PL$, $PW$ and $PR$ relations. Most empirical relations match well with the theoretical $PL$, $PW$ and $PR$ relations from the BL Her models computed using the four sets of convection parameters. However, $PL$ slopes of the models with radiative cooling provide a better match to empirical relations for BL Her stars in the LMC in the $HK_S$ bands. For each set of convection parameters, the effect of metallicity is significant in $U$ and $B$-bands and negligible in infrared bands, which is consistent with empirical results. No significant metallicity effects are seen in the $PR$ relations.
description: 15 pages, 5 figures. Accepted for publication in MNRAS
Η αισθητική της ύπαρξης ως κριτική του παρόντος στον Michel Foucault:
Creators: name: Καμπουρίδης, Θεόδωρος Δημοσθένη
Publisher: name: Aristotle University of Thessaloniki
Year: 2008
Subjects: Αισθητική της ύπαρξης
Εαυτός
Υποκειμενικότητα
Εξουσία
Φουκώ
Πτώχευση
Aesthetics of existence
Self
Subjectivation
Power
Foucault
Fold

description: Τα τελευταία ερωτήματα του Foucault αφορούν στη σχέση του υποκειμένου και της ιδιοσύστασης του, στη προοπτική της υποκειμενικότητας ως ταυτότητας-μη ταυτότητας, αλλά και στην έννοια της διαφοράς σε ένα καθεστώς λόγου που εκπαιδεύει στο ομοιογενές. Οι Φουκωτικές αναζητήσεις τίθενται στο έργο του κάτω από τους τίτλους της "Ηθικής του εαυτού" και της "Κυβερνητικότητας του Εαυτού". Στις αναπτύξεις αυτές παρατηρεί κανείς όχι μόνο τον κεντρικό ρόλο της έννοιας του εαυτού στην Αρχαία Ελλάδα και Ρώμη αλλά και τους τρόπους σύνδεσης με το πολιτικό. Αναλύεται κατά συνέπεια η έννοια του Εαυτού, ως φορέα του πολιτικού δηλαδή ως όντας που δύναται να κυβερνήσει αλλά και να κυβερνηθεί τόσο από τους άλλους όσο και από τον εαυτό του. Με πολλούς τρόπους ο "Εαυτός" εμφανίζεται ως μια ενδεχόμενη ανθρωπολογική μορφή που διαφέρει αρκετά από τον "άνθρωπο", τέτοια ώστε να συμβάλλει σε μια νέα δόμηση και επανατοποθέτηση τόσο του πολιτικού όσο και του ανθρωπολογικού.
description: Foucault's questions concern the relation of the subject and its constitution, the horizon of subjectivity as identity-non-identity but also the consept of difference in a discursive framework that trains us in an environment of homogenety. These Faucaldian queries can be found especially in his work under the titles of "ethics of the Self" and "govermentalty of the Self". Faucault observes the central role of the "Self" in ancient Greece and Rome but also the ways under which the "Self" got connected with the political, that is to say as an existence which is capable of govern and to be governed not only by him/her self but also from others. Thus, the "Self" appears as a plausible anthropological figure which diverges from the anthropological figure of "man", in such a way as to contribute to a new figuration and a replacement in the spheres of the political and of the anthropological.
PCA Beyond The Concept of Manifolds: Principal Trees, Metro Maps, and Elastic Cubic Complexes
Creators: name: Gorban, A. N.
name: Sumner, N. R.
name: Zinovyev, A. Y.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: Multidimensional data distributions can have complex topologies and variable local dimensions. To approximate complex data, we propose a new type of low-dimensional ``principal object'': a principal cubic complex. This complex is a generalization of linear and non-linear principal manifolds and includes them as a particular case. To construct such an object, we combine a method of topological grammars with the minimization of an elastic energy defined for its embedment into multidimensional data space. The whole complex is presented as a system of nodes and springs and as a product of one-dimensional continua (represented by graphs), and the grammars describe how these continua transform during the process of optimal complex construction. The simplest case of a topological grammar (``add a node'', ``bisect an edge'') is equivalent to the construction of ``principal trees'', an object useful in many practical applications. We demonstrate how it can be applied to the analysis of bacterial genomes and for visualization of cDNA microarray data using the ``metro map'' representation. The preprint is supplemented by animation: ``How the topological grammar constructs branching principal components (AnimatedBranchingPCA.gif)''.
description: 19 pages, 8 figures
Meta-Uncertainty for Particle Image Velocimetry
Creators: name: Rajendran, Lalit K.
name: Bhattacharya, Sayantan
name: Bane, Sally P. M.
name: Vlachos, Pavlos P.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: Uncertainty quantification for Particle Image Velocimetry (PIV) is critical for comparing flow fields with Computational Fluid Dynamics (CFD) results, and model design and validation. However, PIV features a complex measurement chain with coupled, non-linear error sources, and quantifying the uncertainty is challenging. Multiple assessments show that none of the current methods can reliably measure the actual uncertainty across a wide range of experiments. Because the current methods differ in assumptions regarding the measurement process and calculation procedures, it is not clear which method is best to use for an experiment. To address this issue, we propose a method to estimate an uncertainty method's sensitivity and reliability, termed the Meta-Uncertainty. The novel approach is automated, local, and instantaneous, and based on perturbation of the recorded particle images. We developed an image perturbation scheme based on adding random unmatched particles to the interrogation window pair considering the signal-to-noise (SNR) of the correlation plane. Each uncertainty scheme's response to several trials of random particle addition is used to estimate a reliability metric, defined as the rate of change of the inter-quartile range (IQR) of the uncertainties with increasing levels of particle addition. We also propose applying the meta-uncertainty as a weighting metric to combine uncertainty estimates from individual schemes, based on ideas from the consensus forecasting literature. We use PIV measurements across a range of canonical flows to assess the performance of the uncertainty schemes.The results show that the combined uncertainty method outperforms the individual methods, and establish the meta-uncertainty as a useful reliability assessment tool for PIV uncertainty quantification.
description: submitted to Measurement Science and Technology
Additional file 1 of Peripartum depression symptom trajectories, telomere length and genotype, and adverse childhood experiences
Creators: name: Vrettou, Maria
name: Lager, Susanne
name: Toffoletto, Simone
name: Iliadis, Stavros I.
name: Kallak, Theodora Kunovac
name: Agnafors, Sara
name: Nieratschker, Vanessa
name: Skalkidou, Alkistis
name: Comasco, Erika
Publisher: name: figshare
Year: 2024
Subjects: subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Pharmacology
subject: Biotechnology
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Cancer
subject: Mental Health

description: Supplementary Material 1
Optical Metasurfaces with Advanced Phase Control Functionalities
Creators: name: Aoni, Rifat Ahmmed
Publisher: name: The Australian National University
Year: 2022

description: The development of a metasurface platform with advanced micro- and nano-fabrication techniques has attracted a lot of attention. It exhibits a broad range of applications in the lens, hologram, image processing, vortex beam generation, information encoding, sensing, etc. Metasurfaces are ultrathin planar nanostructures made of subwavelength metallic or dielectric elements that can efficiently control the light characteristics such as polarisation, dispersion, amplitude, and phase. The high-index dielectric metasurfaces exhibit low loss and produce various types of resonant effects such as Mie-type resonances, Huygens' resonances, and so on. The Huygens' resonant regime of the dielectric metasurfaces exhibits the near-unity transmission window with a 2pi-phase coverage. The efficient 2pi-phase control capability with high transmittance feature makes the metasurfaces versatile tools for wavefront manipulation. The challenge is to realize the practical application of the metadevices such as beam deflection, optical image processing, sensing, hologram, lens, and so on. The performance of such metadevices can be made highly efficient by incorporating carefully engineered phase discretisation. Due to such engineered subwavelength wave discretisation, new functionalities that are not possible to date can be achieved by governing the phase response. In this thesis, I will first demonstrate the efficient control of deflection angle with high diffraction efficiency in the visible wavelength. I will also discuss deeply subwavelength metasurface resonators for terahertz wavefront manipulation. Then, I will focus on a novel dielectric resonant metagrating-based highly sensitive optical biosensing technique. Finally, I will demonstrate Mie-resonant dielectric metasurfaces can be used as a passive filter to perform image processing in the form of edge detection of a target object.
Three essays on payout policy
Creators: name: Khorsand, Bardia
Publisher: name: The Australian National University
Year: 2022

description: This thesis studies dividend payout policy and its effect on firms' financial policy. It comprises three chapters. The first chapter, "The Real and Financial Effects of Dividend Rigidity", explores the consequences of an inflexible dividend policy. We study dividend smoothing in tandem with debt and investment. Avid smoothers resort to net debt to absorb cash flow variations because altering dividends is not fully available. Financially constrained firms are unable to rely entirely on debt to mitigate smoothing frictions, curbing investments to fund cash flow shocks. The effect persists for transitory cash flow, making it unlikely to be driven by heterogeneous growth options. We exploit differences in the loadings of smoothing on dividend strip returns as instruments to address endogeneity concerns. Our findings result from dividend rigidity rather than total payout and the results are magnified for extreme smoothers. The second chapter, "Dividend Hibernation and Future Earnings: When No Dividend News Is Good News", studies a specific type of dividend smoothing called dividend hibernation. Firms frequently enter into dividend hibernation, periods during which dividends remain unchanged for consecutive quarters. We employ a dividend event framework to show that, compared with matched non-hibernating firms, hibernating firms experience higher unexpected future earnings growth for up to five years by reducing underinvestment. We construct an index of adverse selection measures and find that hibernating firms are more opaque, indicating that the information gap between insiders and outsiders widens when there is no change in dividends. Extended hibernation episodes increase the opaqueness, while dividend changes after prolonged periods of no signalling reduce the information gap more effectively. A question may arise with a section of the first chapter claiming that dividend smoothing can have a negative impact on firm value while, in the second chapter, it is argued that hibernation (a specific form of smoothing) can have a positive impact on firm value. One must note that, in the first chapter, it is argued that dividend smoothing destroys value in the presence of financial constraints. If a firm has sufficient access to external funds, smoothing is not necessarily a policy with adverse valuation outcomes. Hence, to be clear, the two chapters focus on different aspects of payout policy. In the third chapter, "Estimating Permanent Earnings Surprise", we estimate unexpected changes in permanent earnings for individual firms by using lagged stock return responses to dividend changes. We show that the estimated surprises in permanent earnings represent aggregate permanent earnings. Moreover, we document that firms return 82% of permanent earnings to shareholders through dividends, on average.