cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
A Weight Initialization Based on the Linear Product Structure for Neural Networks
Creators: name: Chen, Qipin
name: Hao, Wenrui
name: He, Juncai
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Numerical Analysis (math.NA)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: Weight initialization plays an important role in training neural networks and also affects tremendous deep learning applications. Various weight initialization strategies have already been developed for different activation functions with different neural networks. These initialization algorithms are based on minimizing the variance of the parameters between layers and might still fail when neural networks are deep, e.g., dying ReLU. To address this challenge, we study neural networks from a nonlinear computation point of view and propose a novel weight initialization strategy that is based on the linear product structure (LPS) of neural networks. The proposed strategy is derived from the polynomial approximation of activation functions by using theories of numerical algebraic geometry to guarantee to find all the local minima. We also provide a theoretical analysis that the LPS initialization has a lower probability of dying ReLU comparing to other existing initialization strategies. Finally, we test the LPS initialization algorithm on both fully connected neural networks and convolutional neural networks to show its feasibility, efficiency, and robustness on public datasets.
description: 18 pages, 4 figures
Homogeneous involutions on upper triangular matrices
Creators: name: de Mello, Thiago Castilho
Publisher: name: arXiv
Year: 2021
Subjects: subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics
subject: 16W10, 16W20, 16W50

description: Let $K$ be a field of characteristic different from 2 and let $G$ be a group. If the algebra $UT_n$ of $n\times n$ upper triangular matrices over $K$ is endowed with a $G$-grading $Γ: UT_n=\oplus_{g\in G}A_g$ we give necessary and sufficient conditions on $Γ$ that guarantees the existence of a homogeneous antiautomorphism on $A$, i.e., an antiautomorphism $φ$ satisfying $φ(A_g)=A_{θ(g)}$ for some permutation $θ$ of the support of the grading. It turns out that $UT_n$ admits a homogeneous antiautomorphism if and only if the reflection involution of $UT_n$ is homogeneous. Moreover, we prove that if one homogeneous antiautomorphism of $UT_n$ is defined by the map $θ$ then any other homogeneous antiautomorphism is defined by the same map $θ$.
SPLICE: A Synthetic Paid Loss and Incurred Cost Experience Simulator
Creators: name: Avanzi, Benjamin
name: Taylor, Gregory Clive
name: Wang, Melantha
Publisher: name: arXiv
Year: 2021
Subjects: subject: Risk Management (q-fin.RM)
subject: Applications (stat.AP)
subject: FOS: Economics and business
subject: FOS: Computer and information sciences
subject: 91G70, 91G60, 62P05

description: In this paper, we first introduce a simulator of cases estimates of incurred losses, called `SPLICE` (Synthetic Paid Loss and Incurred Cost Experience). In three modules, case estimates are simulated in continuous time, and a record is output for each individual claim. Revisions for the case estimates are also simulated as a sequence over the lifetime of the claim, in a number of different situations. Furthermore, some dependencies in relation to case estimates of incurred losses are incorporated, particularly recognizing certain properties of case estimates that are found in practice. For example, the magnitude of revisions depends on ultimate claim size, as does the distribution of the revisions over time. Some of these revisions occur in response to occurrence of claim payments, and so `SPLICE` requires input of simulated per-claim payment histories. The claim data can be summarized by accident and payment "periods" whose duration is an arbitrary choice (e.g. month, quarter, etc.) available to the user. `SPLICE` is a fully documented R package that is publicly available and open source (on CRAN). It is built on an existing simulator of individual claim experience called `SynthETIC` (Avanzi et al., 2021a,b), which offers flexible modelling of occurrence, notification, as well as the timing and magnitude of individual partial payments. This is in contrast with the incurred losses, which constitute the additional contribution of `SPLICE`. The inclusion of incurred loss estimates provides a facility that almost no other simulators do.
Quantum Spectral Curve for AdS$_3$/CFT$_2$: a proposal
Creators: name: Cavaglià, Andrea
name: Gromov, Nikolay
name: Stefański, Bogdan
name: Jr.
name: Torrielli, Alessandro
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We conjecture the Quantum Spectral Curve equations for string theory on $AdS_3 \times S^3 \times T^4$ with RR charge and its CFT$_2$ dual. We show that in the large-length regime, under additional mild assumptions, the QSC reproduces the Asymptotic Bethe Ansatz equations for the massive sector of the theory, including the exact dressing phases found in the literature. The structure of the QSC shares many similarities with the previously known AdS$_5$ and AdS$_4$ cases, but contains a critical new feature - the branch cuts are no longer quadratic. Nevertheless, we show that much of the QSC analysis can be suitably generalised producing a self-consistent system of equations. While further tests are necessary, particularly outside the massive sector, the simplicity and self-consistency of our construction suggests the completeness of the QSC.
description: 31 pages + 3 appendices, 6 figures. v2: typos corrected and some comments added. Matches the version published in JHEP. v3: Note added at the end of the introduction on the form of the dressing phases. The rest of the article matches the published version, with minor typos corrected
KEUK – ein Design zur kontrollierten Evaluation von Unterrichtskonzepten
Creators: name: Kepser, Matthis
Publisher: name: PraxisForschungLehrer*innenBildung. Zeitschrift für Schul- und Professionsentwicklung. (PFLB)
Year: 2024

description: Die Erstellung und ggf. Veröffentlichung von Unterrichtskonzepten ist in allen Fachdidaktiken ein zentraler Aspekt universitärer Ausbildung, Forschung und diesbezüglicher Transferbemühungen sowie schulischer Praxis. Jedoch mangelt es oft an der Praxiserprobung, was die Transparenz von diesbezüglichen Publikationen, aber auch deren Validität beeinträchtigt. Um dieses Problem anzugehen, wurde das Design zur kontrollierten Evaluation von (innovativen) Unterrichtskonzepten (KEUK) entwickelt. Das Verfahren involviert zwei Lehrkräfte und Klassen bei der Erprobung eines Unterrichtskonzepts, wobei nach den Lehrversuchen eine (möglichst umfassende) Evaluierung und anschließende Revision des Konzepts erfolgt. KEUK zeichnet sich durch seine ökonomische Durchführbarkeit, klare Verständlichkeit und Anpassungsfähigkeit an unterschiedliche Forschungsanforderungen aus. Es bietet eine Möglichkeit zur Verbesserung und Validierung von Unterrichtskonzepten in den Fachdidaktiken und kann zudem einen Beitrag zur Hochschuldidaktik leisten, indem es Studierenden ein praxisnahes Experimentieren mit verschiedenen empirischen Methoden ermöglicht. Anschließbar ist KEUK an unterschiedliche Forschungsverfahren, insbesondere an Design (Based) Research bzw. Educational Design Research.
description: PraxisForschungLehrer*innenBildung. Zeitschrift für Schul- und Professionsentwicklung. (PFLB), Bd. 6 Nr. 1 (2024): PraxisforschungLehrer*innenBildung – Ausgabe 6
DYNAMICAL INTERACTIONS MAKE HOT JUPITERS in OPEN STAR CLUSTERS
Creators: name: Shara, Michael M.
name: Hurley, Jarrod
name: Mardling, Rosemary A.
Publisher: name: Swinburne
Year: 2024

description: Explaining the origin and evolution of exoplanetary hot Jupiters remains a significant challenge. One possible mechanism for the production of hot Jupiters is planet-planet interactions, which produce them from planets born far from their host stars but near their dynamical stability limits. In the much more likely case of planets born far from their dynamical stability limits, can hot Jupiters be formed in star clusters? Our N-body simulations answer this question in the affirmative, and show that hot Jupiter formation is not a rare event, occurring in ∼1% of star cluster planetary systems. We detail three case studies of the dynamics-induced births of hot Jupiters on highly eccentric orbits that can only occur inside star clusters. The hot Jupiters' orbits bear remarkable similarities to those of some of the most extreme exoplanets known: HAT-P-32b, HAT-P-2b, HD 80606b, and GJ 876d. If stellar perturbations formed these hot Jupiters, then our simulations predict that these very hot inner planets are often accompanied by much more distant gas giants in highly eccentric orbits.
ТОКСОКАРОЗ: ОПИСАНИЕ, ЭПИДЕМИОЛОГИЯ, КЛИНИКА, ДИАГНОСТИКА, ЛЕЧЕНИЕ
Creators: name: Ефременко, Евгений
Publisher: name: ООО Цифра
Year: 2024
Subjects: toxocarosis
helminthiasis
parasitic infestation
zoonosis
roundworms
токсокароз
гельминтоз
паразитарная инвазия
зооноз
круглые черви

description: Международный научно-исследовательский журнал, Выпуск 4 (142) 2024
The effect of Sailuotong (SLT) on neurocognitive and cardiovascular function in healthy adults: a randomised, double-blind, placebo controlled crossover pilot trial
Creators: name: Steiner, Genevieve Z.
name: Yeung, Alan
name: Liu, Jian-Xun
name: Camfield, David
name: Blasio, Frances M.
name: Pipingas, Andrew
name: Scholey, Andrew
name: Stough, Con
name: Chang, Dennis H.
Publisher: name: Swinburne
Year: 2024
Subjects: classificationCode: 520201
subject: Behavioural genetics
classificationCode: 520202
subject: Behavioural neuroscience
classificationCode: 520203
subject: Cognitive neuroscience
classificationCode: 520205
subject: Psychopharmacology
classificationCode: 520206
subject: Psychophysiology
classificationCode: 520207
subject: Social and affective neuroscience
classificationCode: 520301
subject: Clinical neuropsychology
classificationCode: 520401
subject: Cognition
classificationCode: 520403
subject: Learning, motivation and emotion

description: Background: Sailuotong (SLT) is a standardised herbal medicine formula consisting of Panax ginseng, Ginkgo biloba, and Crocus sativus, and has been designed to enhance cognitive and cardiovascular function. Methods: Using a randomised, double-blind, placebo controlled crossover design, this pilot study assessed the effect of treatment for 1 week with SLT and placebo (1 week washout period) on neurocognitive and cardiovascular function in healthy adults. Sixteen adults completed a computerised neuropsychological test battery (Compass), and had their electroencephalographic (EEG) activity and cardiovascular system function assessed. Primary outcome measures were cognitive test scores and oddball task event-related potential (ERP) component amplitudes. Secondary outcome measures were resting EEG spectral band amplitudes, and cardiovascular parameters. Results: Treatment with SLT, compared to placebo, resulted in small improvements in working memory, a slight increase in auditory target (cf. nontarget) P3a amplitude, and a decrease in auditory N1 target (cf. nontarget) amplitude. There was no effect of SLT on EEG amplitude in delta, theta, alpha, or beta bands in both eyes open and eyes closed resting conditions, or on aortic and peripheral pulse pressure, and resting heartrate. Conclusions: Findings suggest that SLT has the potential to improve working memory performance in healthy adults; a larger sample size is needed to confirm this. Trial registration: Australia New Zealand Clinical Trials Registry Trial Registration Id: ACTRN12610000947000.
Superionic states formation in group III oxides irradiated with ultrafast lasers
Creators: name: Voronkov, R. A.
name: Medvedev, N.
name: Volkov, A. E.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: A number of group III-metal oxides are studied via density functional theory in order to establish a possibility of nonthermal transition of these materials into a superionic state. Atomic and electronic properties of the materials are analyzed during the transitions to acquire insights into physical mechanisms guiding such transformations. This knowledge is then used to suggest a criterion allowing to predict the possibility of such transitions without employing computationally heavy methods.
Spaceability on some classes of Banach spaces
Creators: name: Salec, Alireza Bagheri
name: Ivkovic, Stefan
name: Tabatabaie, Seyyed Mohammad
Publisher: name: arXiv
Year: 2021
Subjects: subject: Functional Analysis (math.FA)
subject: FOS: Mathematics

description: In this paper, we study spaceability of subsets of generalized Orlicz and Lebesgue spaces associated to Banach function space. Also, we give some sufficient conditions for spaceability of subsets of a general Banach space which improves an important result on this topic. As an application, it is shown that the set of all bounded linear operators which are not positive semidefinite on a separable Hilbert space is spaceable.
Violation of Bell's inequality with quantum-dot single-photon sources
Creators: name: González-Ruiz, Eva M.
name: Das, Sumanta K.
name: Lodahl, Peter
name: Sørensen, Anders S.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate the possibility of realizing a loophole-free violation of Bell's inequality using deterministic single-photon sources. We provide a detailed analysis of a scheme to achieve such violations over long distances with immediate extensions to device-independent quantum key distribution. We investigate the effect of key experimental imperfections that are unavoidable in real-world single-photon sources including the finite degree of photon indistinguishability, single-photon purity, and the overall source efficiency. We benchmark the performance requirements to state-of-the-art deterministic single-photon sources based on quantum dots in photonic nanostructures and find that experimental realizations appear to be within reach. We also evaluate the requirements for a post-selected version of the protocol, which relaxes the demanding requirements with respect to the source efficiency.
description: 17 pages, 8 figures
The 6dF Galaxy Survey: Peculiar velocity field and cosmography
Creators: name: Springob, Christopher M.
name: Magoulas, Christina
name: Colless, Matthew
name: Mould, Jeremy
name: Erdoğdu, Pirin
name: Jones, D. Heath
name: Lucey, John R.
name: Campbell, Lachlan
name: Fluke, Christopher
Publisher: name: Swinburne
Year: 2024
Subjects: classificationCode: 510103
subject: Cosmology and extragalactic astronomy

description: We derive peculiar velocities for the 6dF Galaxy Survey (6dFGS) and describe the velocity field of the nearby ($z<0.055$) southern hemisphere. The survey comprises 8885 galaxies for which we have previously reported Fundamental Plane data. We obtain peculiar velocity probability distributions for the redshift space positions of each of these galaxies using a Bayesian approach. Accounting for selection bias, we find that the logarithmic distance uncertainty is 0.11 dex, corresponding to $26%$ in linear distance. We use adaptive kernel smoothing to map the observed 6dFGS velocity field out to $cz sim 16,000$ kms, and compare this to the predicted velocity fields from the PSCz Survey and the 2MASS Redshift Survey. We find a better fit to the PSCz prediction, although the reduced $chi^2$ for the whole sample is approximately unity for both comparisons. This means that, within the observational uncertainties due to redshift independent distance errors, observed galaxy velocities and those predicted by the linear approximation from the density field agree. However, we find peculiar velocities that are systematically more positive than model predictions in the direction of the Shapley and Vela superclusters, and systematically more negative than model predictions in the direction of the Pisces-Cetus Supercluster, suggesting contributions from volumes not covered by the models.
Megachile (Xanthosarus) melanophaea subsp. melanophaea melanophaea Smith 1853
Creators: name: Gibbs, Jason
name: Ascher, John S.
name: Rightmyer, Molly G.
name: Isaacs, Rufus
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Megachilidae
Megachile
Megachile melanophaea
Megachile (xanthosarus) melanophaea melanophaea smith 1853

description: Megachile (Xanthosarus) melanophaea melanophaea Smith 1853
County records: Alger, Baraga, Cheboygan, Clinton, Delta, Dickinson, Emmet, Gogebic, Huron, Iron, Kalkaska, Kent, Keweenaw, Luce, Mackinac, Mason, Midland, Montmorency, Oceana, Ontonagon, Osceola, Oscoda, Otsego, Ottawa, Roscommon, Washtenaw, Wexford.
Notes. Ground-nester (Graenicher 1905).
description: Published as part of Gibbs, Jason, Ascher, John S., Rightmyer, Molly G. & Isaacs, Rufus, 2017, The bees of Michigan (Hymenoptera: Apoidea: Anthophila), with notes on distribution, taxonomy, pollination, and natural history, pp. 1-160 in Zootaxa 4352 (1) on page 112, DOI: 10.11646/zootaxa.4352.1.1, http://zenodo.org/record/1063854
Hawking radiation of Dirac particles from soft-hairy black holes
Creators: name: Zhang, Wen-Jie
name: Mao, Pu-Jian
name: Wu, Jun-Bao
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this paper, we study the Hawking radiation of Dirac particles via tunneling formalism from linearly supertranslated Schwarzschild black hole. We find that the radiation spectrum and the Hawking temperature remain the same as the one without soft hair. We extend the same analysis to the linearly supertranslated Vaidya black hole and find that particles can not tunnel through the horizon from the inside. We further comment on the validity of tunneling formalism in the study of Hawking radiation of dynamical black hole.
description: v5, 9 pages, no figures,minor changes
Collision and rebounding of circular rings on rigid target
Creators: name: Xu, Shanqing
name: Ruan, Dong
name: Lu, Guoxing
name: Yu, T. X.
Publisher: name: Swinburne
Year: 2024
Subjects: classificationCode: 400510
subject: Structural engineering
classificationCode: 401706
subject: Numerical modelling and mechanical characterisation
classificationCode: 401707
subject: Solid mechanics

description: The collision behaviour of three types of circular aluminium rings was experimentally studied in this paper. A specially designed fixture attached to the barrel of an air gun was employed for the lateral impact of flying rings on a rigid target. The force history, deformation mechanisms and rebounding velocity of the rings, as well as their dependence on the wall thickness of rings and initial impact velocity were extensively investigated. The results showed that larger initial velocity and greater non-dimensional thickness led to larger magnitude of peak force. With the increase of initial velocity, the rebounding velocity first increased to a maximum value and then dropped, while the coefficient of restitution first decreased almost linearly and then levelled off at a lower level. However, the wall thickness of the ring only has a limited influence on both the rebounding velocity and the coefficient of restitution within the studied range. A six-hinge deformation mechanism was identified based on the four-phase deformation mode of the ring during its collision, which was captured in high speed camera recordings. Furthermore, it was observed that the impact force history was highly related to the deformation mode.
Separation of Artifacts from Spin-Torque Ferromagnetic Resonance Measurements of Spin-Orbit Torque for the Low-Symmetry van der Waals Semi-Metal ZrTe$_\textbf{3}$
Creators: name: Cham, Thow Min
name: Karimeddiny, Saba
name: Gupta, Vishakha
name: Mittelstaedt, Joseph A.
name: Ralph, Daniel C.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We measure spin-orbit torque generated by exfoliated layers of the low-symmetry semi-metal ZrTe$_3$ using the spin-torque ferromagnetic resonance (ST-FMR) technique. When the ZrTe$_3$ has a thickness greater than about 10 nm, artifacts due to spin pumping and/or resonant heating can cause the standard ST-FMR analysis to overestimate the true magnitude of the torque efficiency by as much as a factor of 30, and to indicate incorrectly that the spin-orbit torque depends strongly on the ZrTe$_3$ layer thickness. Artifact-free measurements can still be achieved over a substantial thickness range by the method developed recently to detect ST-FMR signals in the Hall geometry as well as the longitudinal geometry. ZrTe$_3$/Permalloy samples generate a conventional in-plane anti-damping spin torque efficiency $ξ_{||}^{\text{DL}}$ = 0.014 $\pm$ 0.004, and an unconventional in-plane field-like torque efficiency $|ξ_{||}^{\text{FL}}|$ = 0.003 $\pm$ 0.001. The out-of-plane anti-damping torque is negligible. We suggest that artifacts similarly interfere with the standard ST-FMR analysis for other van der Waals samples thicker than about 10 nm.
Megachile (Xanthosarus) mucida Cresson 1878
Creators: name: Gibbs, Jason
name: Ascher, John S.
name: Rightmyer, Molly G.
name: Isaacs, Rufus
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Megachilidae
Megachile
Megachile mucida

description: Megachile (Xanthosarus) mucida Cresson 1878
County records: Berrien, Ingham, Ionia, Muskegon, Van Buren.
Notes. Megachile mucida is poorly represented in historical collections, especially from the northern portion of its range, but it is now quite common in late spring in the Lansing area of Michigan. Its adult emergence was among the earliest of Megachile species in the area and its coloration is distinctive, except with respect to separation from its close relatives M. gemula and M. melanophaea. From those, M. mucida can be distinguished by characters of the female mandible and of the male tarsi (Mitchell 1962) and subtle differences in the distribution of pale hairs. Gibbs (2017) provided details on its distribution in Michigan and described its nesting habits.
description: Published as part of Gibbs, Jason, Ascher, John S., Rightmyer, Molly G. & Isaacs, Rufus, 2017, The bees of Michigan (Hymenoptera: Apoidea: Anthophila), with notes on distribution, taxonomy, pollination, and natural history, pp. 1-160 in Zootaxa 4352 (1) on page 112, DOI: 10.11646/zootaxa.4352.1.1, http://zenodo.org/record/1063854
Heriades (Neotrypetes) leavitti Crawford 1913
Creators: name: Gibbs, Jason
name: Ascher, John S.
name: Rightmyer, Molly G.
name: Isaacs, Rufus
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Megachilidae
Heriades
Heriades leavitti

description: Heriades (Neotrypetes) leavitti Crawford 1913
County records: Cheboygan, Huron, Ingham, Kalamazoo, Lake, Livingston, Missaukee, Saginaw, Shiawassee, Van Buren.
Notes. Nest from Florida described by Krombein (1967).
description: Published as part of Gibbs, Jason, Ascher, John S., Rightmyer, Molly G. & Isaacs, Rufus, 2017, The bees of Michigan (Hymenoptera: Apoidea: Anthophila), with notes on distribution, taxonomy, pollination, and natural history, pp. 1-160 in Zootaxa 4352 (1) on page 113, DOI: 10.11646/zootaxa.4352.1.1, http://zenodo.org/record/1063854
Enabling Cell-Free Massive MIMO Systems with Wireless Millimeter Wave Fronthaul
Creators: name: Demirhan, Umut
name: Alkhateeb, Ahmed
Publisher: name: arXiv
Year: 2021
Subjects: subject: Information Theory (cs.IT)
subject: Signal Processing (eess.SP)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Cell-free massive MIMO systems have promising data rate and uniform coverage gains. These systems, however, typically rely on optical fiber based fronthaul for the communication between the central processing unit (CPU) and the distributed access points (APs), which increases the infrastructure cost, leads to high installation time, and limits the deployment flexibility and adaptability. To address these challenges, this paper proposes two architectures for cell-free massive MIMO systems based on wireless fronthaul that is operating at a \textit{higher-band} compared to the access links: (i) A wireless-only fronthaul architecture where the CPU has a wireless fronthaul link to each AP, and (ii) a mixed-fronthaul architecture where the CPU has a wireless link to each cluster of APs that are connected together via optical fibers. These dual-band architectures ensure high-data rate fronthaul and provide high capability to synchronize the distributed APs. Further, the wireless fronthaul reduces the infrastructure cost and installation time, and enhances the flexibility, adaptability, and scalability of the network deployment. To investigate the achievable data rates with the proposed architectures, we formulate the end-to-end data rate optimization problem accounting for the various practical aspects of the fronthaul and access links. Then, we develop a low-complexity yet efficient joint beamforming and resource allocation solution for the proposed architectures based on user-centric AP grouping. With this solution, we show that the proposed architectures can achieve comparable data rates to those obtained with optical fiber-based fronthaul under realistic assumptions on the fronthaul bandwidth, hardware constraints, and deployment scenarios. This highlights a promising path for realizing the cell-free massive MIMO gains in practice while reducing the infrastructure and deployment overhead.
description: This paper is accepted in IEEE Transactions on Wireless Communications
The herbarium has left the building. Moving 6 Million specimens into a new facility whilst changing to APG IV
Creators: name: Bijmoer, Roxali
name: Scherrenberg, Marnel
Publisher: name: Zenodo
Year: 2022

description: Abstract of conference poster on The herbarium has left the building. Moving 6 Million specimens into a new facility whilst changing to APG IV by Senior Collections Manager Roxali Bijmoer of Naturalis Biodiversity Center Leiden Netherlands for SPNHC2022 Conference, Edinburgh. June 5-10th 2022.
A unified dual-stage actuator control scheme for track seeking and following in hard disk drives
Creators: name: Zheng, Jinchuan
name: Fu, M.
Publisher: name: Swinburne
Year: 2024

description: This paper presents a unified approach to track seeking and following control for a dual-stage actuator (DSA) hard disk drive (HDD) system. Based on a doubly coprime factorisation (DCF) method, the DSA controller and the closedloop dynamics are expressed explicitly in terms of two design parameters. This greatly simplifies the optimisation of design parameters in meeting desired specifications. We then address how to use the design parameters to deal with specific problems in the DSA, that is, control allocation for disturbance rejection and trajectory planning for track seeking. Simulated results are also presented to verify the effectiveness of the proposed DSA controller. Compared with previous works, the proposed approach can fulfil track seeking and following tasks by a single controller without switching. Moreover, the unified controller can achieve desirable performances for both tasks that are equivalent to that by two separate conventional controllers.
Renormalization Scheme Dependence of $β$-Functions In Lorentz-Violating Quantum Field Theory
Creators: name: Karki, Sapan
name: Altschul, Brett
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Effective quantum field theories that allow for the possibility of Lorentz symmetry violation can sometimes also include redundancies of description in their Lagrangians. Explicit calculations in a Lorentz-violating generalization of Yukawa theory show that when this kind of redundancy exists, different renormalization schemes may lead to different expressions for the renormalization group $β$-functions, even at only one-loop order. However, the renormalization group scaling of physically observable quantities appears not to share this kind of scheme dependence.
description: 24 pages
A non-Hermitian optical atomic mirror
Creators: name: Wang, Yi-Cheng
name: You, Jhih-Shih
name: Jen, H. H.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Atomic Physics (physics.atom-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Explorations of symmetry and topology have led to important breakthroughs in quantum optics, but much richer behaviors arise from the non-Hermitian nature of light-matter interactions. A high-reflectivity, non-Hermitian optical mirror can be realized by a two-dimensional subwavelength array of neutral atoms near the cooperative resonance associated with the collective dipole modes. Here we show that exceptional points develop from a nondefective degeneracy by lowering the crystal symmetry of a square atomic lattice, and dispersive bulk Fermi arcs that originate from exceptional points are truncated by the light cone. We also find, although the dipole-dipole interaction is reciprocal, the geometry-dependent non-Hermitian skin effect emerges. Furthermore, skin modes localized at a boundary show a scale-free behavior that stems from the long-range interaction and whose mechanism goes beyond the framework of non-Bloch band theory. Our work opens the door to the study of the interplay among non-Hermiticity, topology, and long-range interaction.
description: 8 + 20 pages, 4 + 7 figures
Hoplitis Klug
Creators: name: Gibbs, Jason
name: Ascher, John S.
name: Rightmyer, Molly G.
name: Isaacs, Rufus
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Megachilidae
Hoplitis

description: Genus Hoplitis Klug
Taxonomy: Michener (1947a); Mitchell (1962); Sedivy et al. (2013).
Biology. Solitary stem-nesters. Cell partitions are made of leaf pulp and sometimes pebbles are incorporated.
description: Published as part of Gibbs, Jason, Ascher, John S., Rightmyer, Molly G. & Isaacs, Rufus, 2017, The bees of Michigan (Hymenoptera: Apoidea: Anthophila), with notes on distribution, taxonomy, pollination, and natural history, pp. 1-160 in Zootaxa 4352 (1) on page 114, DOI: 10.11646/zootaxa.4352.1.1, http://zenodo.org/record/1063854
Certificate Root Stores: An Area of Unity or Disparity?
Creators: name: Purushothaman, Jegan
name: Thompson, Ethan
name: Abdou, AbdelRahman
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cryptography and Security (cs.CR)
subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: Organizations like Apple, Microsoft, Mozilla and Google maintain certificate root stores, which are used as trust anchors by their software platforms. Is there sufficient consensus on their root-store inclusion and trust policies? Disparities appear astounding, including in the government-owned certificates that they trust. Such a status-quo is alarming.
Hoplitis (Alcidamea) albifrons subsp. albifrons albifrons (Kirby 1837
Creators: name: Gibbs, Jason
name: Ascher, John S.
name: Rightmyer, Molly G.
name: Isaacs, Rufus
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Megachilidae
Hoplitis
Hoplitis albifrons
Hoplitis (alcidamea) albifrons albifrons (kirby 1837)

description: Hoplitis (Alcidamea) albifrons albifrons (Kirby 1837) (tuberculata group)
County records: Alger, Baraga, Barry, Cheboygan, Dickinson, Iron, Keweenaw, Livingston, Marquette, Schoolcraft.
Notes. Nest in Ontario described by Fye (1965).
description: Published as part of Gibbs, Jason, Ascher, John S., Rightmyer, Molly G. & Isaacs, Rufus, 2017, The bees of Michigan (Hymenoptera: Apoidea: Anthophila), with notes on distribution, taxonomy, pollination, and natural history, pp. 1-160 in Zootaxa 4352 (1) on page 114, DOI: 10.11646/zootaxa.4352.1.1, http://zenodo.org/record/1063854
Molecular Chemistry for Dark Matter II: Recombination, Molecule Formation, and Halo Mass Function in Atomic Dark Matter
Creators: name: Gurian, James
name: Jeong, Donghui
name: Ryan, Michael
name: Shandera, Sarah
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Dissipative dark matter predicts rich observable phenomena that can be tested with future large-scale structure surveys. As a specific example, we study atomic dark matter, consisting of a heavy particle and a light particle charged under a dark electromagnetism. In particular, we calculate the cosmological evolution of atomic dark matter focusing on dark recombination and dark-molecule formation. We have obtained the relevant interaction-rate coefficients by re-scaling the rates for normal hydrogen, and evolved the abundances for ionized, atomic, and molecular states using a modified version of Recfast++ (which we have released publicly at https://github.com/jamesgurian/RecfastJulia). We also provide an analytical approximation for the final abundances. We then calculate the effects of the atomic dark matter on the linear power spectrum, which enter through a dark-photon diffusion and dark acoustic oscillations. At the formation time, the atomic dark matter model suppresses halo abundances on scales smaller than the diffusion scale, just like the warm dark matter models suppress the abundance below the free-streaming scale. The subsequent evolution with radiative cooling, however, will alter the halo mass function further.
description: 21 pages, 6 figures; Updated to match published version
Molecular Chemistry for Dark Matter III: DarkKROME
Creators: name: Ryan, Michael
name: Shandera, Sarah
name: Gurian, James
name: Jeong, Donghui
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Dark matter that is dissipative may cool sufficiently to form compact objects, including black holes. Determining the abundance and mass spectrum of those objects requires an accurate model of the chemistry relevant for the cooling of the dark matter gas. Here we introduce a chemistry tool for dark matter, DarkKROME, an extension of the KROME software package. DarkKROME is designed to include all atomic and molecular processes relevant for dark matter with two unequal-mass fundamental fermions, interacting via a massless-photon mediated $U(1)$ force. We use DarkKROME to perform one-zone collapse simulations and study the evolution of temperature-density phase diagrams for various dark-sector parameters.
description: 17 pages, 7 figures. Updated with changes for published version. DarkKROME is publicly available at https://bitbucket.org/mtryan83/darkkrome
A randomized quantum algorithm for statistical phase estimation
Creators: name: Wan, Kianna
name: Berta, Mario
name: Campbell, Earl T.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Data Structures and Algorithms (cs.DS)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Phase estimation is a quantum algorithm for measuring the eigenvalues of a Hamiltonian. We propose and rigorously analyse a randomized phase estimation algorithm with two distinctive features. First, our algorithm has complexity independent of the number of terms L in the Hamiltonian. Second, unlike previous L-independent approaches, such as those based on qDRIFT, all sources of error in our algorithm can be suppressed by collecting more data samples, without increasing the circuit depth.
description: 5+20 pages, 4 figures
Onshore & Inshore Storage of CO2
Creators: name: Cavanagh, Andrew
name: Haszeldine, Stuart
name: Palfi, Erika
name: Paterson, John
name: Stevenson, Richard
name: White, Gillian
Publisher: name: SCCS
Year: 2024
Subjects: Carbon capture and storage
Inshore storage of CO2
Biogenic carbon
CCS costs
CCS deployment timeframes

description: This study explores the potential to deploy CO2 storage in nearshore and inshore areas of Scotland, the analysis includes aspects related to legislation, storage capacity and sources of biogenic CO2.
Heriades (Neotrypetes) variolosa subsp. variolosa Cresson 1872
Creators: name: Gibbs, Jason
name: Ascher, John S.
name: Rightmyer, Molly G.
name: Isaacs, Rufus
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Megachilidae
Heriades
Heriades variolosa
Heriades (neotrypetes) variolosa variolosa (cresson 1872)

description: Heriades (Neotrypetes) variolosa variolosa (Cresson 1872)
County records: Cheboygan, Montmorency, Oscoda, Otsego, Ottawa, Saginaw.
Notes. Nest from Minnesota described by Fischer (1955).
description: Published as part of Gibbs, Jason, Ascher, John S., Rightmyer, Molly G. & Isaacs, Rufus, 2017, The bees of Michigan (Hymenoptera: Apoidea: Anthophila), with notes on distribution, taxonomy, pollination, and natural history, pp. 1-160 in Zootaxa 4352 (1) on page 113, DOI: 10.11646/zootaxa.4352.1.1, http://zenodo.org/record/1063854
Quantization of rationally deformed Morse potentials by Wronskian transforms of Romanovski-Bessel polynomials
Creators: name: Natanson, Gregory
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: The paper advances the suggestion by Odake and Sasaki to re-write eigenfunctions of rationally deformed Morse potentials in terms of Wronskians of Laguerre polynomials in the reciprocal argument. It is shown that the constructed quasi-rational seed solutions of the Schrodinger equation with the Morse potential are formed by generalized Bessel polynomials with degree-independent indexes. As a new achievement we can point to the construction of the Darboux-Crum net of isospectral rational potentials using Wronskians of generalized Bessel polynomials with no positive zeros. It was then proved that any solvable rational Darboux-Crum transform of the Morse potential can be re-expressed in terms of Wronskians of the latter polynomials accompanied by juxtaposed pairs of Romanovski-Bessel polynomials.
description: 32 pages, presented at the conference "Algebraic and analytical methods in physics XVIII" in September 1-3, 2021, Prague
(Im)balance in the Representation of News? An Extensive Study on a Decade Long Dataset from India
Creators: name: Chakraborty, Souvic
name: Goyal, Pawan
name: Mukherjee, Animesh
Publisher: name: arXiv
Year: 2021
Subjects: subject: Digital Libraries (cs.DL)
subject: Computers and Society (cs.CY)
subject: FOS: Computer and information sciences

description: (Im)balance in the representation of news has always been a topic of debate in political circles. The concept of balance has often been discussed and studied in the context of the social responsibility theory and the prestige press in the USA. While various qualitative, as well as quantitative measures of balance, have been suggested in the literature, a comprehensive analysis of all these measures across a large dataset of the post-truth era comprising different popular news media houses and over a sufficiently long temporal scale in a non-US democratic setting is lacking. We use this concept of balance to measure and understand the evolution of imbalance in Indian media on various journalistic metrics on a month-by-month basis. For this study, we amass a huge dataset of over four million political articles from India for 9+ years and analyze the extent and quality of coverage given to issues and political parties in the context of contemporary influential events for three leading newspapers. We use several state-of-the-art NLP tools to effectively understand political polarization (if any) manifesting in these articles over time. We find that two out of the three news outlets are more strongly clustered in their imbalance metrics. We also observe that only a few locations are extensively covered across all the news outlets and the situation is only slightly getting better for one of the three news outlets. Cloze tests show that the changing landscape of events get reflected in all the news outlets with border and terrorism issues dominating in around 2010 while economic aspects like unemployment, GST, demonetization, etc. became more dominant in the period 2014 -- 2018. Further, cloze tests clearly portray the changing popularity profile of the political parties over time.
description: 14 pages, submitted to IEEE TCSS
Wave-mixing with high-order harmonics in extreme ultraviolet region
Creators: name: Dao, Lap
name: Dinh, Khuong
name: Le, Hoang Vu
name: Gaffney, Naylyn
name: Hannaford, Peter
Publisher: name: Swinburne
Year: 2024

description: We report studies of the wave-mixing process in the extreme ultraviolet region with two near-infrared driving and controlling pulses with incommensurate frequencies (at 1400 nm and 800 nm). A non-collinear scheme for the two beams is used in order to spatially separate and to characterise the properties of the high-order wave-mixing field. We show that the extreme ultraviolet frequency mixing can be treated by perturbative, very high-order nonlinear optics; the modification of the wave-packet of the free electron needs to be considered in this process.
Low-symmetry non-local transport in microstructured squares of delafossite metals
Creators: name: McGuinness, Philippa H.
name: Zhakina, Elina
name: König, Markus
name: Bachmann, Maja D.
name: Putzke, Carsten
name: Moll, Philip J. W.
name: Khim, Seunghyun
name: Mackenzie, Andrew P.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Intense work studying the ballistic regime of electron transport in two dimensional systems based on semiconductors and graphene had been thought to have established most of the key experimental facts of the field. In recent years, however, new forms of ballistic transport have become accessible in the quasi-two-dimensional delafossite metals, whose Fermi wavelength is a factor of 100 shorter than those typically studied in the previous work, and whose Fermi surfaces are nearly hexagonal in shape, and therefore strongly faceted. This has some profound consequences for results obtained from the classic ballistic transport experiment of studying bend and Hall resistances in mesoscopic squares fabricated from delafossite single crystals. We observe pronounced anisotropies in bend resistances and even a Hall voltage that is strongly asymmetric in magnetic field. Although some of our observations are non-intuitive at first sight, we show that they can be understood within a non-local Landauer-Büttiker analysis tailored to the symmetries of the square/hexagonal geometries of our combined device/Fermi surface system. Signatures of non-local transport can be resolved for squares of linear dimension of nearly 100 $μ$m, approximately a factor of 15 larger than the bulk mean free path of the crystal from which the device was fabricated.
description: 23 pages, 9 figures (including supplementary information)
Modelling the ages and metallicities of early-type galaxies in Fundamental Plane space
Creators: name: Porter, L. A.
name: Somerville, R. S.
name: Primack, J. R.
name: Croton, Darren
name: Covington, M. D.
name: Graves, G. J.
name: Faber, S. M.
Publisher: name: Swinburne
Year: 2024

description: Recent observations have probed the formation histories of nearby elliptical galaxies by tracking correlations between the stellar population parameters, age and metallicity, and the structural parameters that enter the Fundamental Plane, size Re, and velocity dispersion σ. These studies have found intriguing correlations between these four parameters. In this work, we make use of a semi-analytic model, based on halo merger trees extracted from the Bolshoi cosmological simulation, that predicts the structural properties of spheroid-dominated galaxies based on an analytic model that has been tested and calibrated against an extensive suite of hydrodynamic+N-body binary merger simulations. We predict the Re, σ, luminosity, age, and metallicity of spheroid-dominated galaxies, enabling us to compare directly to observations. Our model predicts a strong correlation between age and σ for early-type galaxies, and no significant correlation between age and radius, in agreement with observations. In addition, we predict a strong correlation between metallicity and σ, and a weak correlation between metallicity and Re, in qualitative agreement with observations. We find that the correlations with σ arise as a result of the strong link between σ and the galaxy's assembly time. Minor mergers produce a large change in radius while leaving σ nearly the same, which explains the weaker trends with radius.
A Novel Actuation Strategy for an Agile Bio-inspired FWAV Performing a Morphing-coupled Wingbeat Pattern
Creators: name: Chen, Ang
name: Song, Bifeng
name: Wang, Zhihe
name: Xue, Dong
name: Liu, Kang
Publisher: name: arXiv
Year: 2021
Subjects: subject: Robotics (cs.RO)
subject: Systems and Control (eess.SY)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Flying vertebrates exhibit sophisticated wingbeat kinematics. Their specialized forelimbs allow for the wing morphing motion to couple with the flapping motion during their level flight, Previous flyable bionic platforms have successfully applied bio-inspired wing morphing but cannot yet be propelled by the morphing-coupled wingbeat pattern. Spurred by this, we develop a bio-inspired flapping-wing aerial vehicle (FWAV) entitled RoboFalcon, which is equipped with a novel mechanism to drive the bat-style morphing wings, performs a morphing-coupled wingbeat pattern, and overall manages an appealing flight. The novel mechanism of RoboFalcon allows coupling the morphing and flapping during level flight and decoupling these when maneuvering is required, producing a bilateral asymmetric downstroke affording high rolling agility. The bat-style morphing wing is designed with a tilted mounting angle around the radius at the wrist joint to mimic the wrist supination and pronation effect of flying vertebrates' forelimbs. The agility of RoboFalcon is assessed through several rolling maneuver flight tests, and we demonstrate its well-performing agility capability compared to flying creatures and current flapping-wing platforms. Wind tunnel tests indicate that the roll moment of the asymmetric downstroke is correlated with the flapping frequency, and the wrist mounting angle can be used for tuning the angle of attack and lift-thrust configuration of the equilibrium flight state. We believe that this work yields a well-performing bionic platform and provides a new actuation strategy for the morphing-coupled flapping flight.
Can Satellite Mega-Constellations Justify their Impact on Astronomy?
Creators: name: Petchetti, Sai Charan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Private space companies are increasingly commercializing near-earth space. Some estimates show that more than 100,000 satellites may orbit the Earth by 2030. This increase in the number of satellites has many consequences for science, particularly astronomy. Satellite mega-constellations for satellite Internet connectivity are one of the main drivers behind the explosion in the number of satellites. Here, we briefly note whether such satellite mega-constellations can justify their impact on astronomy.