cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Concentration-Flux-Steered Mechanism Exploration with an Organocatalysis Application
Creators: name: Bensberg, Moritz
name: Reiher, Markus
Publisher: name: arXiv
Year: 2022
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: Investigating a reactive chemical system with automated reaction network exploration algorithms provides a more detailed picture of its chemical mechanism than what would be accessible by manual investigation. In general, exploration algorithms cannot uncover reaction networks exhaustively for feasibility reasons. They should therefore decide which part of a network is kinetically relevant under some external conditions given. Here, we propose an automated algorithm that identifies and explores kinetically accessible regions of a reaction network on the fly by explicit modeling of concentration fluxes through an (incomplete) reaction network that is emerging during automated first-principles exploration. Key compounds are automatically identified and selected for the continuation of the exploration. As an example, we explore the reaction network of the multi-component proline-catalyzed Michael addition of propanal and nitropropene. Our algorithm provides a mechanistic picture of the Michael addition in unprecedented detail.
description: 36 pages, 10 figures
Euryglossula incisa Batley 2016, n. sp.
Creators: name: Batley, Michael
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Colletidae
Euryglossula
Euryglossula incisa

description: Euryglossula incisa n. sp. Figs 10, 24, 36 Type specimens. HOLOTYPE ♂, 13 km E of Cheepie, Queensland (26°38'S 145°8'E), 9 Sep 1989, E. Exley, G. Daniels and C. Burwell, on Eucalyptus thozetiana in QM (T234951). PARATYPES (15♀♀, 4♂♂, all in QM). Queensland: 11♀♀, 4♂♂, same data as holotype (QM T234952–962, T234963–966); 4♀♀, 5 km W of Cheepie, Queensland (26°38'S 144°47'E), 9 Sep 1989, E. Exley, G. Daniels and C. Burwell, on Eucalyptus ochrophloia (QM T234967–970). Diagnosis. Female mostly black, lower face brown with clypeus mostly yellow and paraocular areas with yellow suffusions. Distinguished from E. eremophilae and E. kubinensis by almost parallel inner orbits. Male face yellow to bottom of fovea, metasomal terga with large lateral yellow marks viewed from above. Distinguished from E. purpurea by black scutellum, from E. fultoni by yellow line adjacent to upper half of inner orbit and from E. deserti primarily by terminalia. Description. Female.—Head width 1.10 mm, body length 3.5 mm. Relative measurements: HW 50, HL 41, UID 30, LID 28, FVL 10, CW 25, CL 9, FL 22. Head and mesosoma dark brown with following dull yellow: clypeus, scape and flagellum ventrally, mandibles, gena ventrally, pronotal tubercle, tegula, alar sclerites, trochanters and femora distally. Paraocular areas with dull yellow suffusions, legs yellow with brown areas on coxae, femora and tibiae. Frons moderately tessellate with weak punctures; scutum weakly tessellate with close punctures. Fore basitarsal setae stiff, weakly capitate; setae on ta2–4 stiff, short, hooked. Metasoma black with posterolateral corners T2–5 translucent, occasionally with narrow yellow line. Male.—Head width 0.99 mm, body length 2.9 mm. Relative measurements: HW 50, HL 42, UID 32, LID 28, FVL 10, CW 23, CL 8, FL 33. Head yellow except vertex, occiput and frons medially black to bottom of fovea, scape and flagellum brown dorsally. Mesosoma black dorsally with pronotum, anterolateral corners of scutum, tegula and alar sclerites yellow, ventrally yellow except lower mesepisternum with a brown mark and dark subalar pits. Sculpture similar to female, but tessellation somewhat stronger and punctures denser. Metasoma yellow ventrally, dark brown dorsally with T6 and T1–5 laterally, yellow. S5 with prominent fringe of white hair, short medially. Etymology. The specific epithet refers to the dorsal colour pattern on the metasoma of the males.
description: Published as part of Batley, Michael, 2016, New Species of Euryglossula Michener (Apoidea: Colletidae), pp. 245-261 in Records of the Australian Museum 68 (6) on page 250, DOI: 10.3853/j.2201-4349.68.2016.1665
History of Contaminated Air – From 1901 to 2021
Creators: name: Loraine, Tristan
Publisher: name: Zenodo
Year: 2021
Subjects: contaminated air
fume events
oil fumes
flight safety
bleed air
aerotoxic syndrome
ACA2021
ACA2021-PRE

description: This presentation identifies the historical aspects of aircraft contaminated cabin air. The problem was first known in early 1950s. There are over 150 pieces of research and other initiatives to date. It is an acknowledged flight safety issue. FAA and EASA are failing to mitigate to flight safety problem or protect crew and public health. We find increasing legal actions against airlines and aircraft manufacturers. Effective total cabin air filtration and onboard sensors are needed to enhance flight safety and protect public health.
description: This is a presentation from the International Aircraft Cabin Air Conference 2021 (Online, 15-18 March 2021)
Identifying modified theories of gravity using binary black-hole ringdowns
Creators: name: Pacilio, Costantino
name: Bhagwat, Swetha
Publisher: name: arXiv
Year: 2023
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Black-hole spectroscopy, that is, measuring the characteristic frequencies and damping times of different modes in a black-hole ringdown, is a powerful probe for testing deviations from the general theory of relativity (GR). In this work, we present a comprehensive study on its ability to identify deviations from the spectrum of a Kerr black hole in GR. Specifically, we investigate the performance of black hole spectroscopy on a diverse set of theoretically motivated as well as phenomenologically modified spectra. We find that while the signal-to-noise ratio $ρ_{\rm RD}$ in the ringdown required to identify a modification to the GR Kerr black hole spectrum depends on the details of the modifications, a modification that introduces $\sim 1 \%$ shift in the fundamental mode frequencies can typically be distinguished with $ρ_{\rm RD} \in [150,500]$. This range of $ρ_{\rm RD}$ is feasible with the next-generation detectors, showing a promising science case for black hole spectroscopy.
description: v1: 14 pages, 4 figures. v2: matches published version
Braid group actions via categorified Heisenberg complexes
Creators: name: Cautis, Sabin
name: Licata, Anthony
name: Sussan, Joshua
Publisher: name: arXiv
Year: 2012
Subjects: subject: Representation Theory (math.RT)
subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics

description: We construct categorical braid group actions from 2-representations of a Heisenberg algebra. These actions are induced by certain complexes which generalize spherical (Seidel-Thomas) twists and are reminiscent of the Rickard complexes defined by Chuang-Rouquier. Conjecturally, one can relate our complexes to Rickard complexes using categorical vertex operators.
description: 35 pages
Euryglossula pallida Batley 2016, n. sp.
Creators: name: Batley, Michael
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Colletidae
Euryglossula
Euryglossula pallida

description: Euryglossula pallida n. sp. Figs 2c, 3b, 4a, 13, 27, 36 Type specimens. HOLOTYPE ♂, 6 km NE of Barkly Roadhouse, Northern Territory (19.6693°S 135.8577°E), 7 Aug 2012, M. Batley, ex Corymbia terminalis, in AM (K360278). PARATYPES (10♀♀, 6♂♂ in AM), same data as holotype (K345816, K345823, K345668–675, K360274, K360276, K470057–060). Diagnosis. Female with head and mesosoma predominantly yellow, very like E. flava, but paler with less black dorsally on metasoma, distinguished from E. flava by width of lower gena (Fig. 4). Male distinguished from E. flava by paler colour, shape of mandible and terminalia. Description. Female.—Head width 1.05 mm, body length 3.3 mm. Relative measurements: HW 50, HL 39, UID 29, LID 26, FVL 9, CW 24, CL 9, FL 18. Head yellow, paler ventrally (except occiput black). Lower gena almost as wide as eye. Frons tessellate with dense punctures. Mesosoma yellow with orange suffusions; dorsal and posterior surfaces of propodeum usually all black, but occasionally yellow laterally; most suture lines black. Sculpture of scutum similar to frons. Wing veins weakly pigmented. Metasoma pale yellow with small medial dark brown or black patch on each tergum. Male.—Head width 1.0 mm, body length 3.0 mm. Relative measurements: HW 50, HL 41, UID 31, LID 28, FVL 8, CW 28, CL 8, FL 25. Head pale yellow shading to white ventrally (except occiput black); flagellum very pale brown; mandibles bidentate with ventral tooth enlarged (Fig. 3b). Frons with moderate to weak tessellation and small, dense punctures. Mesosoma pale yellow apart from small black area on dorsal surface of propodeum. Sculpture of scutum similar to frons. Metasoma pale yellow with central ⅓ of each tergum black. Etymology. The specific name refers to the pale colour relative to that of E. flava. Additional material examined. Northern Territory: 2♀♀, 2♂♂, 4 km NE Barkly Roadhouse (19.681°S 135.849°E), 7 May 2008, M. Batley, ex Corymbia terminalis, in AM (K361452–455); 2♀♀, 3♂♂, Elliott (17.562°S 133.558°E), 13 May 2008, M. Batley, ex Corymbia terminalis, in AM (K361586–590); 2♀♀, 2♂♂, 7 km NW Barkly Roadhouse (19.670°S 135.768°E), 14 May 2008, M. Batley, ex Corymbia terminalis, in AM (K361607–610). Queensland: 3♀♀, 13♂♂, ‘ Talawanta’, 80 ml SE of Burketown, 24 May 1972, G.B. & S. R. Monteith, on Eucalyptus, in QM.
description: Published as part of Batley, Michael, 2016, New Species of Euryglossula Michener (Apoidea: Colletidae), pp. 245-261 in Records of the Australian Museum 68 (6) on pages 251-252, DOI: 10.3853/j.2201-4349.68.2016.1665
Toxic Cabin Air Litigation in the USA
Creators: name: Littlepage, Zoe
Publisher: name: Zenodo
Year: 2021
Subjects: cabin
air
contamination
toxic
fume
event
neurotoxin
litigation
USA
Boeing
Illinois
plaintiff
flight
crew
injury
document
legal
deposition
employee
engineer
expert
sensor
data
safety
ACA2021
ACA2021-PRE

description: Littlepage, Booth, and Leckman go against The Boeing Company in the court of Cook County Illinois with plaintiffs who are injured flight crew. The court ruled that "permitting Boeing to hide important and startling safety issues uncovered in this litigation is against public policy and Illinois law." As a consequence 1.1 million pages of Boeing documents were reviewed. Many depositions of Boeing employees: David Space, Head of Boeing's Air Quality Team (2019-11-01) confirms that it would not be unusual to expect 4.4 fume events a day tracked back to oil or hydraulic fluid. George Bates, Boeing's Air Quality Team (email, 2007-10-26): "I think we are looking for a tombstone before anyone with any horsepower is going to take interest." David Space was pushing for cabin environment monitoring. Related to this, George Bates confirms (2018-09-21) the "biggest impeding factor is the legal issue". If someone wanted to see the sensor data, it would have to be turned over. George Bates was concerned that people who were exposed to contaminants would have actual data about what they were exposed to and that they could use [it] in a court of law against Boeing. Dr. Dennis Stumpp, Occupational Medicine Physician for Boeing (2019-11-04) believes that someone can get hurt from breathing in contaminated air in an aircraft while in flight. George McEachen, Boeing's Designated Corporate Expert (2019-11-04) sees studies looking at normal flight operations where neurotoxins are found in the cabin air.
description: This is a presentation from the International Aircraft Cabin Air Conference 2021 (Online, 15-18 March 2021)
Numerical Calculation of Bessel Functions
Creators: name: Schwartz, Charles
Publisher: name: arXiv
Year: 2012
Subjects: subject: Numerical Analysis (math.NA)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: A new computational procedure is offered to provide simple, accurate and flexible methods for using modern computers to give numerical evaluations of the various Bessel functions. The Trapezoidal Rule, applied to suitable integral representations, may become the method of choice for evaluation of the many Special Functions of mathematical physics.
description: 10 pages
SIMPly add a dark photon
Creators: name: Braat, Pieter
name: Postma, Marieke
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Pions of a dark sector gauge group can be strongly interacting massive particle (SIMP) dark matter, produced by the freeze-out of $3 \to 2$ interactions, with naturally large self-interactions. We study if adding a dark photon to the set-up can do it all: i) maintain thermalization with the visible sector, ii) resonantly enhance the $3\to2$ interactions, thus allowing for a perturbative pion description, and iii) provide a velocity dependent self-interaction that can affect small scale structure formation. For $N_f=3$ this minimal setup is marginally excluded, as the required kinetic mixing is too small to maintain thermal equilibrium with the SM. Adding an extra dark quark opens up parameter space, and -- perhaps somewhat surprisingly -- we find that all bounds can be satisfied for dark pion masses $m_π\sim 250-600\,$MeV. Dropping the small scale structure requirement iii), a viable setup is reproduced for dark charges of $α_d = 0.01-1$ and a dark pion mass $m_π\geq 30$ MeV. Late time annihilations are non-negligible making the SIMP dark pion a bit WIMPy.
description: 18 pages, 14 pages appendices, 3 figures
Die Anfänge der Stadt Wildeshausen, Lkr. Oldenburg (Oldb.)
Creators: name: Steffens, Heino-Gerd
Publisher: name: Nachrichten aus Niedersachsens Urgeschichte
Year: 2019

description: -
description: Nachrichten aus Niedersachsens Urgeschichte, Bd. 45 (1976): Nachrichten aus Niedersachsens Urgeschichte
Time-Correlated Structure in Spin Fluctuations in Pulsars
Creators: name: Price, Steve
name: Link, Bennett
name: Shore, Steve
name: Nice, David
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We study statistical properties of stochastic variations in pulse arrival times, timing noise, in radio pulsars using a new analysis method applied in the time domain. The method proceeds in two steps. First, we subtract low-frequency wander using a high-pass filter. Second, we calculate the discrete correlation function of the filtered data. As a complementary method for measuring correlations, we introduce a statistic that measures the dispersion of the data with respect to the data translated in time. The analysis methods presented here are robust and of general usefulness for studying arrival time variations over timescales approaching the average sampling interval. We apply these methods to timing data for 32 pulsars. In two radio pulsars, PSRs B1133+16 and B1933+16, we find that fluctuations in arrival times are correlated over timescales of 10 - 20 d with the distinct signature of a relaxation process. Though this relaxation response could be magnetospheric in origin, we argue that damping between the neutron star crust and interior liquid is a more likely explanation. Under this interpretation, our results provide the first evidence independent from pulsar spin glitches of differential rotation in neutron stars. PSR B0950+08, shows evidence for quasi-periodic oscillations that could be related to mode switching.
description: 25 pages, Final journal version (MNRAS)
The SeaLiT Ontology -- An Extension of CIDOC-CRM for the Modeling and Integration of Maritime History Information
Creators: name: Fafalios, Pavlos
name: Kritsotaki, Athina
name: Doerr, Martin
Publisher: name: arXiv
Year: 2023
Subjects: subject: Databases (cs.DB)
subject: FOS: Computer and information sciences

description: We describe the construction and use of the SeaLiT Ontology, an extension of the ISO standard CIDOC-CRM for the modelling and integration of maritime history information. The ontology has been developed gradually, following a bottom-up approach that required the analysis of large amounts of real primary data (archival material) as well as knowledge and validation by domain experts (maritime historians). We present the specification of the ontology, RDFS and OWL implementations, as well as knowledge graphs that make use of this data model for integrating information originating from a large and diverse set of archival documents, such as crew lists, sailors registers, naval ship registers and payrolls. We also describe an application that operates over these knowledge graphs and which supports historians in exploring and quantitatively analysing the integrated data through a user-friendly interface. Finally, we discuss aspects related to the use, evolution and sustainability of the ontology.
description: This is a preprint of an article accepted for publication at the ACM Journal on Computing and Cultural Heritage (JOCCH)
Neue Felssteingeräte aus dem Braunschweiger Raum
Creators: name: Möckel, Hedwig
name: Schwarz-Mackensen, Gesine
Publisher: name: Nachrichten aus Niedersachsens Urgeschichte
Year: 2019

description: -
description: Nachrichten aus Niedersachsens Urgeschichte, Bd. 45 (1976): Nachrichten aus Niedersachsens Urgeschichte
Additional file 1 of Breastfeeding competency scale (BCS); development and validation of an evaluation instrument on breastfeeding competency in third trimester pregnancy
Creators: name: Wu, Yu
name: Wang, Ying
name: Hu, Jiazhen
name: Dang, Yan
name: Zhang, Yuanyuan
name: Qi, Xiumei
name: Tian, Qingxiu
name: Wang, Aihua
name: Li, Yunfeng
Publisher: name: figshare
Year: 2021
Subjects: subject: Space Science
subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Biotechnology
subject: Environmental Sciences not elsewhere classified
subject: Sociology
subject: FOS: Sociology
subject: Immunology
subject: FOS: Clinical medicine
subject: Mathematical Sciences not elsewhere classified
subject: Developmental Biology
subject: Science Policy
subject: Hematology

description: Additional file 1. The source of BCS items.
A Workflow Model for Holistic Data Management and Semantic Interoperability in Quantitative Archival Research
Creators: name: Fafalios, Pavlos
name: Marketakis, Yannis
name: Axaridou, Anastasia
name: Tzitzikas, Yannis
name: Doerr, Martin
Publisher: name: arXiv
Year: 2023
Subjects: subject: Databases (cs.DB)
subject: FOS: Computer and information sciences

description: Archival research is a complicated task that involves several diverse activities for the extraction of evidence and knowledge from a set of archival documents. The involved activities are usually unconnected, in terms of data connection and flow, making difficult their recursive revision and execution, as well as the inspection of provenance information at data element level. This paper proposes a workflow model for holistic data management in archival research; from transcribing and documenting a set of archival documents, to curating the transcribed data, integrating it to a rich semantic network (knowledge graph), and then exploring the integrated data quantitatively. The workflow is provenance-aware, highly-recursive and focuses on semantic interoperability, aiming at the production of sustainable data of high value and long-term validity. We provide implementation details for each step of the workflow and present its application in maritime history research. We also discuss relevant quality aspects and lessons learned from its application in a real context.
description: This is a preprint of an article accepted for publication in Digital Scholarship in the Humanities (DSH), published by Oxford University Press
IATA Perspective on Cabin Air Quality Standards Development
Creators: name: Munteanu, Dragos
Publisher: name: Zenodo
Year: 2021
Subjects: EASA
CEN
EN 17436
FAA
ACA2021
ACA2021-PRE

description: -
description: This is a presentation from the International Aircraft Cabin Air Conference 2021 (Online, 15-18 March 2021)
Euryglossula pinnulata Batley 2016, n. sp.
Creators: name: Batley, Michael
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Colletidae
Euryglossula
Euryglossula pinnulata

description: Euryglossula pinnulata n. sp. Figs 1b, 2e, 6, 14, 28, 34 Type specimens. HOLOTYPE ♂, 19 km S Charleville, Queensland, 26.565°S 146.200°E, M. Batley, 6 Sep 2013, ex Calytrix longiflora in AM (K447281). PARATYPES (23♀♀, 17♂♂, all in AM), same data as holotype. (K447247–280, K470067–072). Diagnosis. Female mostly black, clypeus with yellowbrown suffusions, head elongate. Distinguished from E. carnarvonensis by length of facial fovea and large part of femora brown. Male with elongate head, yellow to top of fovea; S5 with two pairs of distinctive setae unlike any other species. Description. Female.—Head width 0.9 mm, body length 3.25 mm. Relative measurements: HW 50, HL 48, UID 31, LID 23, FVL 13, CW 22, CL 9, FL 27. Head black with clypeus, supraclypeal area and lower gena brown, mandible and labrum yellow-brown.Antenna yellow ventrally, dark brown dorsally. Labrum without an apical spine. Frons tessellate with sparse, fine punctures. Mesosoma black with pronotal tubercle, tegula, alar sclerites and legs yellow (with the following brown: coxae, trochanters medially, femora other than distal end, small brown patch on hind tibia and all distitarsi). Hind basitibial area defined by carinae only basally. Scutum tessellate with dense punctures. Metasoma dark brown, T1–5 with translucent apical margins, T6 pale yellow apically, pygidial plate amber; sterna lighter with irregular yellow-brown markings. Occasionally metasoma entirely black. Male.—Head width 0.85 mm, body length 2.7 mm. Relative measurements: HW 50, HL 46, UID 31, LID 24, FVL 8, CW 21, CL 10, FL 36. Head yellow with vertex, occiput and frons down to top of fovea black. Frons strongly tessellate obscuring any punctures. Mesosoma black with the following yellow: pronotum, lateral margins of scutum to rear of tegula, ventral half of mesepisternum except for a medial black patch. Scutum strongly tessellate with dense punctures. Metasoma dark brown dorsally (except apical tergal margins translucent), apical half of T6 and venter yellow. S6 weakly concave, fringe on S5 reduced to sparse row of very long, plumose setae, including a pair of broad pinnate setae on each side. Metasomal S2–S5 have slightly elevated areas either side of midline (Fig. 6). Etymology. The specific name is a Latin adjective referring to the feather-like setae on the fifth sternum of the male.
description: Published as part of Batley, Michael, 2016, New Species of Euryglossula Michener (Apoidea: Colletidae), pp. 245-261 in Records of the Australian Museum 68 (6) on page 252, DOI: 10.3853/j.2201-4349.68.2016.1665
MPEC 2023-M147 : DAILY ORBIT UPDATE (2023 June 26)
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Interactions of neutral semipermeable shells in asymmetric electrolyte solutions
Creators: name: Lobaskin, Vladimir
name: Bogdanov, Artem N.
name: Vinogradova, Olga I.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We study the ionic equilibria and interactions of neutral semi-permeable spherical shells immersed in electrolyte solutions, including polyions. Although the shells are uncharged, only one type of ions of the electrolyte can permeate them, thus leading to a steric charge separation in the system. This gives rise to a charge accumulation inside the shell and a build up of concentration- dependent shell potential, which converts into a disjoining pressure between the neighboring shells. These are quantified by using the Poisson-Boltzmann and integral equations theory. In particular, we show that in case of low valency electrolytes, interactions between shells are repulsive and can be sufficiently strong to stabilize the shell dispersion. In contrast, the charge correlation effects in solutions of polyvalent ions result in attractions between the shells, with can lead to their aggregation.
Operational Aspects of Contaminated Air – An Engineer's Perspective
Creators: name: Pavia, Ricardo
Publisher: name: Zenodo
Year: 2021
Subjects: air
cabin
oil
odors
event
pollution
contamination
engineering
conditioning
quality
pneumatics
perspective
AOG
COS
ECS
ACA2021
ACA2021-PRE

description: -
description: This is a presentation from the International Aircraft Cabin Air Conference 2021 (Online, 15-18 March 2021)
Surface acoustic wave resonators on thin film piezoelectric substrates in the quantum regime
Creators: name: Luschmann, Thomas
name: Jung, Alexander
name: Geprägs, Stephan
name: Haslbeck, Franz X.
name: Marx, Achim
name: Filipp, Stefan
name: Gröblacher, Simon
name: Gross, Rudolf
name: Huebl, Hans
Publisher: name: arXiv
Year: 2023
Subjects: subject: Applied Physics (physics.app-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Lithium niobate (LNO) is a well established material for surface acoustic wave (SAW) devices including resonators, delay lines and filters. Recently, multi-layer substrates based on LNO thin films have become commercially available. Here, we present a systematic low-temperature study of the performance of SAW devices fabricated on LNO-on-insulator and LNO-on-Silicon substrates and compare them to bulk LNO devices. Our study aims at assessing the performance of these substrates for quantum acoustics, i.e. the integration with superconducting circuits operating in the quantum regime. To this end, we design SAW resonators with a target frequency of 5 GHz and perform experiments at millikelvin temperatures and microwave power levels corresponding to single photons or phonons. The devices are investigated regarding their internal quality factors as a function of the excitation power and temperature, which allows us to characterize and quantify losses and identify the dominating loss mechanism. For the measured devices, fitting the experimental data shows that the quality factors are limited by the coupling of the resonator to a bath of two-level-systems. Our results suggest that SAW devices on thin film LNO on silicon have comparable performance to devices on bulk LNO and are viable for use in SAW-based quantum acoustic devices.
description: 13 pages, 4 figures
GRASIAN: Towards the first demonstration of gravitational quantum states of atoms with a cryogenic hydrogen beam
Creators: name: Killian, Carina
name: Burkley, Zakary
name: Blumer, Philipp
name: Crivelli, Paolo
name: Gustafsson, Fredrik
name: Hanski, Otto
name: Nanda, Amit
name: Nez, Francois
name: Nesvizhevsky, Valery
name: Reynaud, Serge
name: Schreiner, Katharina
name: Simon, Martin
name: Vasiliev, Sergey
name: Widmann, Eberhard
name: Yzombard, Pauline
Publisher: name: arXiv
Year: 2023
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: At very low energies, a light neutral particle above a horizontal surface can experience quantum reflection. The quantum reflection holds the particle against gravity and leads to gravitational quantum states (GQS). So far, GQS were only observed with neutrons as pioneered by Nesvizhevsky and his collaborators at ILL. However, the existence of GQS is predicted also for atoms. The GRASIAN-collaboration pursues the first observation and studies of GQS of atomic hydrogen. We propose to use atoms in order to exploit the fact that orders of magnitude larger fluxes compared to those of neutrons are available. Moreover, recently the qBounce collaboration, performing GQS spectroscopy with neutrons, reported a discrepancy between theoretical calculations and experiment which deserves further investigations. For this purpose, we set up a cryogenic hydrogen beam at 6 K. We report on our preliminary results, characterizing the hydrogen beam with pulsed laser ionization diagnostics at 243 nm.
A Breath of Fresh Air – ECA's View on Cabin Air Quality
Creators: name: Pont, Rudy
Publisher: name: Zenodo
Year: 2021
Subjects: cabin
air
breath
quality
pilot
health
crew
medical
design
European Union
ECA
CAQ
ACA2021
ACA2021-PRE

description: Founded in 1991, the European Cockpit Association (ECA) represents around 40.000 European pilots through their national pilot associations in 33 EU member states. With regards to cabin air quality (CAQ), the association’s position is clear: cabin air contamination is a known problem that can cause serious short- and long-term health effects which may compromise flight safety. Even when the aviation industry claims that there is no consensus about the health effects caused by the contaminated cabin air, numerous cases, reports and academic papers urge the application of the precautionary principle.

 Because contaminated cabin air is a known hazard, ORO.GEN.200 requires air operators "to evaluate and manage associated risks, including taking actions to mitigate the risk and verify their effectiveness" (Regulation (EU) 965/2012). Unfortunately, this does not correspond to today’s reality. After a reported fume event, technical investigations often remain inconclusive and primarily focus on restoring aircraft airworthiness. Crews are often left on their own . And in those cases when crews undergo a medical assessment, physicians (even certified aeromedical examiners) often lack specific expertise related to contaminated cabin air, which makes them revert to perform a very basic assessment (anamnesis, heart rate, blood pressure), which is seldom documented in a standardised manner. This leads to a situation where a known hazard remains unmitigated and crews continue to be exposed to contaminated cabin air without proper follow-up.

 ECA is of the opinion that in the long-term bleed free aircraft design is the single solution for this issue. Meanwhile, the association argues that firstly there is a need for a clear standardised medical protocol to ensure that crews undergo specific tests which are recorded and stored in a standardised manner. Ideally, this medical information should be correlated with the technical investigation, creating a (de-identified) body of evidence that can serve as a basis for further research on the health effects of contaminated cabin air. Secondly, ECA calls upon operators and manufacturers to act based on the currently available knowledge and technology with regards to sensors, filters, oil components , etc. And thirdly, the association sees a need for a more stringent regulatory follow-up on CAQ training, awareness and reporting.
description: This is a presentation from the International Aircraft Cabin Air Conference 2021 (Online, 15-18 March 2021)
Euryglossula scalaris Batley 2016, n. sp.
Creators: name: Batley, Michael
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Colletidae
Euryglossula
Euryglossula scalaris

description: Euryglossula scalaris n. sp. Figs 16, 30, 35 Type specimens. HOLOTYPE ♂, 6 km NE Barkly Roadhouse, Northern Territory (19.669°S 135.857°E), 7 Aug 2012, M. Batley ex Corymbia terminalis in AM (K360277). PARATYPES (7♀♀, 8♂♂, all deposited in AM). 2♀♀, 3♂♂, same data as holotype (K345676–680), 5♀♀, 5♂♂, 4 km NE Barkly Roadhouse (19.681°S 135.849°E), 7 May 2008, M. Batley, ex Corymbia terminalis (K361456–463). Diagnosis. Both sexes recognisable from colour pattern on metasoma. Description. Female.—Head width 1.1 mm, body length 3.5 mm. Relative measurements: HW 50, HL 39, UID 30, LID 25, FVL 11, CW 25, CL 10, FL 24. Head yellow with occiput black and antenna dark brown dorsally. Frons with weak, dense punctures and weak tessellation. Mesosoma yellow except scutum orange-yellow with darker markings approximately along parapsidal lines, propodeum dorsally black with medial yellow patch, laterally yellow. Scutum with dense punctures and weak tessellation. Metasoma yellow with thick black lines running down the sides and across the rear of each tergum to form a linear pattern of contiguous rectangles. Male.—Head width 1.1 mm, body length 3.5 mm. Relative measurements: HW 50, HL 37, UID 31, LID 25, FVL 5, CW 23, CL 9, FL 26. As for female, but scutum yellow with irregular faint brown markings. Etymology. The specific name is a Latin adjective meaning “of a ladder” and refers to the dorsal colour pattern on the metasoma of both sexes. Additional material examined. Northern Territory: 3♀♀, 1♂, 5 km E Barkly Homestead, 23 Aug 1987, N.W. Rodd, in AM; 2♀♀, 3♂♂, Elliott (17.562°S 133.558°E), 13 May 2008, M. Batley, ex Corymbia terminalis, in AM (K361563–567); 1♀, 7 km NW Barkly Roadhouse (19.670°S 135.768°E), 14 May 2008, M. Batley, ex Corymbia terminalis, in AM (K361605). Queensland: 1♀, 10 km E Camooweal (19.920°S 138.202°E), 20 Aug 2007, M. Batley, ex Corymbia terminalis, in AM (K361671); 5♀♀, 6♂♂, Airstrip, 27 km N of Coen, 28 Jun 1975, S. R. Monteith, in QM. Western Australia: 3♀♀, 170 km E Broome, 21 May 1981, D.P.A. Sands, on Eucalyptus sp. (in QM).
description: Published as part of Batley, Michael, 2016, New Species of Euryglossula Michener (Apoidea: Colletidae), pp. 245-261 in Records of the Australian Museum 68 (6) on page 254, DOI: 10.3853/j.2201-4349.68.2016.1665
The Carriers of the Interstellar Unidentified Infrared Emission Features: Aromatic or Aliphatic?
Creators: name: Li, Aigen
name: Draine, B. T.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The unidentified infrared emission (UIE) features at 3.3, 6.2, 7.7, 8.6, and 11.3 micrometer, commonly attributed to polycyclic aromatic hydrocarbon (PAH) molecules, have been recently ascribed to coal- or kerogen-like organic nanoparticles with a mixed aromatic-aliphatic structure. However, we show in this Letter that this hypothesis is inconsistent with observations. We estimate the aliphatic fraction of the UIE carriers based on the observed intensities of the 3.4 and 6.85 micrometer emission features by attributing them exclusively to aliphatic C-H stretch and aliphatic C-H deformation vibrational modes, respectively. We derive the fraction of carbon atoms in aliphatic form to be <15%. We conclude that the UIE emitters are predominantly aromatic with aliphatic material at most a minor part of the UIE carriers. The PAH model is consistent with astronomical observations and PAHs dominate the strong UIE bands.
description: 10 pages, 2 figures, accepted for publication in ApJ Letters
Nanoscopic jets and filaments of superfluid He-4 at zero temperature: a DFT study
Creators: name: Ancilotto, Francesco
name: Barranco, Manuel
name: Pi, Marti
Publisher: name: arXiv
Year: 2023
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Helium droplets produced by the instability of a cryogenic helium jet exiting a source chamber leads to the formation of He drops which are considered as ideal matrices for spectroscopic studies of embedded atoms and molecules. Here, we present a He-DFT description of droplet formation resulting from jet breaking and contraction of superfluid He-4 filaments. Whereas the fragmentation of long jets closely follows the predictions of linear theory for inviscid fluids, leading to droplet trains interspersed with smaller satellite droplets, the contraction of filaments with an aspect ratio larger than a threshold value leads to the nucleation of vortex rings which hinder their breakup into droplets.
description: 14 pages, 12 figures, published version
Vortices in a rotating holographic superfluid with Lifshitz scaling
Creators: name: Srivastav, Ankur
name: Gangopadhyay, Sunandan
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We have extended our previous work [1] on rotating holographic superfluids to include Lifshitz scaling. Presence of this scaling breaks relativistic invariance of the boundary superfluid system and indicates the existence of a Lifshitz fixed point [2]. We have analytically shown that we still get same vortex solutions as discovered earlier in [1]. We have recovered previous results for the case of z = 1, which restores the relativistic invariance in the holographic superfluid system. However, for z $\neq$ 1 this study indicate surprising results regarding dissipation in such a holographic superfluid. We found that higher winding number vortices increase with higher values of imaginary chemical potential for values of z in the open interval (1, 2). This result is remarkable because it asserts that dissipation in the rotating holographic superfluid increases in the presence of Lifshitz scaling.
description: 7 pages, 9 figures
Radial Lip Seals for Aerospace Applications – An Overview
Creators: name: Shabbir, Sarah
Publisher: name: Zenodo
Year: 2021
Subjects: seal
lip
leakage
tightness
oil
aircraft
engine
APU
ACA2021
ACA2021-PRE

description: All seals will leak to some extent, even if it is minimal and referred to as "emission" rather than a leak. Such (elastomeric radial lip) dynamic oil seals cannot achieve absolute tightness. Only technical tightness can be achieved. Technical tightness is a loose term. A perfect sealing system does not exist. Leakage control must be defined by the user/application for each oil seal. Achieving higher leakage control might mean compromising on the degree of wear. The requirements for elastomeric radial lip oil seals, their mating surfaces (shafts) and lubricant are very specifically defined and are critical in achieving a successful seal.
description: This is a presentation from the International Aircraft Cabin Air Conference 2021 (Online, 15-18 March 2021)
The Phase Diagram of Two Color QCD
Creators: name: Hands, Simon
name: Cotter, Seamus
name: Giudice, Pietro
name: Skullerud, Jon-Ivar
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: I present recent results from lattice simulations of SU(2) gauge theory with Nf=2 Wilson quark flavors, at non-zero quark chemical potential. The thermodynamic equation of state is discussed along with the nature of the high density matter which forms. It is conjectured that deconfinement may mean different things for bulk and Fermi surface phenomena.
description: 5 pages, contribution to "Extreme QCD" workshop, Washington DC, 21-23 August 2012
Quasiadditivity of variational capacity
Creators: name: Lehrbäck, Juha
name: Shanmugalingam, Nageswari
Publisher: name: arXiv
Year: 2012
Subjects: subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: Primary 31E05, 31C45, Secondary 46E35, 26D15

description: We study the quasiadditivity property (a version of superadditivity with a multiplicative constant) of variational capacity in metric spaces with respect to Whitney type covers. We characterize this property in terms of a Mazya type capacity condition, and also explore the close relation between quasiadditivity and Hardy's inequality.
description: 15 pages
Appropriate Reliance on AI Advice: Conceptualization and the Effect of Explanations
Creators: name: Schemmer, Max
name: Kühl, Niklas
name: Benz, Carina
name: Bartos, Andrea
name: Satzger, Gerhard
Publisher: name: arXiv
Year: 2023
Subjects: subject: Artificial Intelligence (cs.AI)
subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: AI advice is becoming increasingly popular, e.g., in investment and medical treatment decisions. As this advice is typically imperfect, decision-makers have to exert discretion as to whether actually follow that advice: they have to "appropriately" rely on correct and turn down incorrect advice. However, current research on appropriate reliance still lacks a common definition as well as an operational measurement concept. Additionally, no in-depth behavioral experiments have been conducted that help understand the factors influencing this behavior. In this paper, we propose Appropriateness of Reliance (AoR) as an underlying, quantifiable two-dimensional measurement concept. We develop a research model that analyzes the effect of providing explanations for AI advice. In an experiment with 200 participants, we demonstrate how these explanations influence the AoR, and, thus, the effectiveness of AI advice. Our work contributes fundamental concepts for the analysis of reliance behavior and the purposeful design of AI advisors.
description: arXiv admin note: text overlap with arXiv:2204.06916
Radial Lip Seals for Aerospace Applications – An Overview
Creators: name: Shabbir, Sarah
name: Garvey, Seamus D.
name: Dakka, Sam M.
name: Rothwell, Benjamin C.
Publisher: name: Zenodo
Year: 2021
Subjects: seal
lip seal
lubricant
shaft
sleeve
failure
seal failure
Airbus
A320
A330
GTF
APU
overhaul
ACA2021
ACA2021-PUB

description: A seal is a component that impedes the flow of fluid through a given system. The word "impede" holds emphasis as there is no such thing as a zero leakage seal. All dynamic seals must leak, even if it is as low as 1 mm^3 per year and referred to as "emission".
description: This is a publication from the International Aircraft Cabin Air Conference 2021 (Online, 15-18 March 2021)
Kann man zur See herrschen? Zur Frage mittelalterlicher Thalassokratien
Creators: name: Rüdiger, Jan
Publisher: name: Vorträge und Forschungen
Year: 2019

description: -
description: Vorträge und Forschungen, Bd. 83 (2016): Vorträge und Forschungen: Maritimes Mittelalter. Meere als Kommunikationsräume
On the applicability of the Landau-Zener formula to axion-photon conversion
Creators: name: Carenza, Pierluca
name: Marsh, M. C. David
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Axions and photons resonantly interconvert in regions where the plasma frequency approximately equals the axion mass. This process is directly analogous to an avoided level crossing in quantum mechanics, for which the celebrated Landau-Zener (LZ) formula provides a simple, non-perturbative solution for the conversion probability. The LZ formula is commonly used in studies of axion-photon conversion; however, in this context, it relies on the assumption that the magnetic field variation is small compared to variations of the plasma frequency, which is frequently not the case in real plasmas. We derive a generalised version of the LZ formula by allowing the boundaries to be located at a scale that is similar to the inhomogeneities. We find that the LZ formula fails when the oscillation range is small compared to the resonance region. This failure is more severe in the adiabatic limit, when the plasma frequency varies slowly, resulting in a conversion probability that is not maximal as opposed to a naive application of the LZ formula. Moreover, we consider circumstances where the generalised LZ formula does not apply and present an alternative semi-classical approximation with complementary regime of validity.
description: v2: 19 pages, 5 figures. minor changes to match the published version
On the Anomalous Silicate Absorption Feature of the Prototypical Seyfert 2 Galaxy NGC 1068
Creators: name: Koehler, Melanie
name: Li, Aigen
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The first detection of the silicate absorption feature in AGNs was made at 9.7 micrometer for the prototypical Seyfert 2 galaxy NGC 1068 over 30 years ago, indicating the presence of a large column of silicate dust in the line-of-sight to the nucleus. It is now well recognized that type 2 AGNs exhibit prominent silicate absorption bands, while the silicate bands of type 1 AGNs appear in emission. More recently, using the Mid-Infrared Interferometric Instrument on the Very Large Telescope Interferometer, Jaffe et al. (2004) by the first time spatially resolved the parsec-sized dust torus around NGC 1068 and found that the 10 micrometer silicate absorption feature of the innermost hot component exhibits an anomalous profile differing from that of the interstellar medium and that of common olivine-type silicate dust. While they ascribed the anomalous absorption profile to gehlenite (Ca_2Al_2SiO_7, a calcium aluminum silicate species), we propose a physical dust model and argue that, although the presence of gehlenite is not ruled out, the anomalous absorption feature mainly arises from silicon carbide.
description: 5 pages, 3 figures, published in MNRAS Letters
Chronic Low Level Exposure to Organophosphates
Creators: name: Terry, Alvin V.
Publisher: name: Zenodo
Year: 2021
Subjects: pesticide
nerve agent
gulf war illness
aerotoxic syndrome
axonal tranpsoprt
therapeutic strategies
ACA2021
ACA2021-PRE

description: -
description: This is a presentation from the International Aircraft Cabin Air Conference 2021 (Online, 15-18 March 2021)
EvoText: Enhancing Natural Language Generation Models via Self-Escalation Learning for Up-to-Date Knowledge and Improved Performance
Creators: name: Yuan, Zhengqing
name: Xue, Huiwen
name: Zhang, Chao
name: Liu, Yongming
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: In recent years, pretrained models have been widely used in various fields, including natural language understanding, computer vision, and natural language generation. However, the performance of these language generation models is highly dependent on the model size and the dataset size. While larger models excel in some aspects, they cannot learn up-to-date knowledge and are relatively difficult to relearn. In this paper, we introduce EvoText, a novel training method that enhances the performance of any natural language generation model without requiring additional datasets during the entire training process (although a prior dataset is necessary for pretraining). EvoText employs two models: $G$, a text generation model, and $D$, a model that can determine whether the data generated by $G$ is legitimate. Initially, the fine-tuned $D$ model serves as the knowledge base. The text generated by $G$ is then input to $D$ to determine whether it is legitimate. Finally, $G$ is fine-tuned based on $D$'s output. EvoText enables the model to learn up-to-date knowledge through a self-escalation process that builds on a priori knowledge. When EvoText needs to learn something new, it simply fine-tunes the $D$ model. Our approach applies to autoregressive language modeling for all Transformer classes. With EvoText, eight models achieved stable improvements in seven natural language processing tasks without any changes to the model structure.
description: 22 pages, 4 figures
Dietrich Boschung, Die Bildnisse des Caligula
Creators: name: Hertel, Dieter
Publisher: name: Bonner Jahrbücher
Year: 2019

description: Rezension zu: Dietrich Boschung, Die Bildnisse des Caligula. Mit einem Beitrag von Hans-Markus von Kaenel. Aufgrund der Vorarbeiten und Materialsammlungen von Hans Jucker. Das Römische Herrscherbild, Abteilung I, Band 4. Gebr. Mann Verlag, Berlin 1989. 138 Seiten, 37 Skizzen, 4 Münztafeln und 47 Tafeln.
description: Bonner Jahrbücher, Bd. 190.1990(1991): Bonner Jahrbücher