cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
MCID of the Minimum Masking Level (Jin et al., 2025)
Creators: name: Jin, Tae-Jun
name: Lee, Sumin
name: Lee, Donghyeok
name: Jin, In-Ki
Publisher: name: ASHA journals
Year: 2025
Subjects: classificationCode: 420102
subject: Audiology
classificationCode: 420109
subject: Rehabilitation

description: Purpose: Tools that can reliably measure changes in the perception of tinnitus following interventions are lacking. The minimum masking level, defined as the lowest level at which tinnitus is completely masked, is a candidate for quantifying changes in tinnitus perception. In this study, we aimed to determine minimal clinically important differences for minimum masking level.Method: A 3-month tinnitus intervention combining counseling and sound therapy was conducted in 74 participants with chronic tinnitus. Minimum masking levels were measured at baseline and 3 months. The clinical global impression was evaluated at 3 months to measure changes in participants’ self-perception of tinnitus. The minimal clinically important difference of the minimum masking level was calculated using anchored-based, effect size, standard error measurement, and receiver operating characteristic curve analysis.Results: The minimal clinically important difference analysis of the minimum masking level yielded a −5.5 dB SL from the receiver operating characteristic curve, a −8.1 dB SL from the standard error measurement, a −9.2 dB SL from the effect size, and a −10.3 dB SL from the anchor-based analysis. Of these, the minimal clinically important difference value with optimized sensitivity (.704) and specificity (.957) was a −5.5 dB SL, determined using receiver operating characteristic analysis.Conclusions: The proposed minimal clinically important difference value of the minimum masking level (−5.5 dB SL) provides a good level of sensitivity and specificity. Therefore, the minimum masking level may be an alternative for measuring changes in tinnitus perception.Supplemental Material S1. MML and CGI results of the participants included in the data analysis.Jin, T.-J., Lee, S., Lee, D., Jin, I.-K. (2025). Quantifying tinnitus perception improvement: Deriving the minimal clinically important difference of the minimum masking level. Journal of Speech, Language, and Hearing Research, 68(2), 827–838. https://doi.org/10.1044/2024_JSLHR-24-00374
Passive intrinsic-linewidth narrowing of ultraviolet extended-cavity diode laser by weak optical feedback
Creators: name: Samutpraphoot, Polnop
name: Weber, Sophie
name: Lin, Qian
name: Gangloff, Dorian
name: Bylinskii, Alexei
name: Braverman, Boris
name: Kawasaki, Akio
name: Raab, Christoph
name: Kaenders, Wilhelm
name: Vuletić, Vladan
Publisher: name: arXiv
Year: 2014
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We present a simple method for narrowing the intrinsic Lorentzian linewidth of a commercial ultraviolet grating extended-cavity diode laser (TOPTICA DL Pro) using weak optical feedback from a long external cavity. We achieve a suppression in frequency noise spectral density of 20 dB measured at frequencies around 1 MHz, corresponding to the narrowing of the intrinsic Lorentzian linewidth from 200 kHz to 2 kHz. The system is suitable for experiments requiring a tunable ultraviolet laser with narrow linewidth and low high-frequency noise, such as precision spectroscopy, optical clocks, and quantum information science experiments.
description: 8 pages, 3 figures
Effects of intrinsic decoherence on discord-like correlation measures of two-qubit spin squeezing model
Creators: name: Abhignan, Venkat
name: Muthuganesan, R.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum decoherence happens when the system interacts with the environment. Quantum correlation behaviours in the two-qubit spin squeezing model are studied under the influence of intrinsic decoherence. Quantitative results were determined, which depend on parameters of the physical system by checking different quantifiers of quantum correlation such as entanglement, local quantum uncertainty, trace distance discord and uncertainty-induced quantum nonlocality. We show that the entanglement suffers from intrinsic decoherence and exhibits sudden death, whereas the other measures are more robust against intrinsic decoherence. Further, we highlight the role of spin squeezing coupling constant and magnetic field.
description: 10 pages
Fit for purpose? A metascientific analysis of metabolomics data in public repositories
Creators: name: Spicer, Rachel
Publisher: name: Apollo - University of Cambridge Repository
Year: 2019
Subjects: Metabolomics
Metabolome
Public Data
Open Data
Metascience
Metascientific analysis
Data sharing
Metabolite
FAIR Data Principles
Reporting Standards
Metabolomics Standards Initative (MSI)
Metadata
Data Archiving

description: Metabolomics is the study of metabolites and metabolic processes. Due to the diversity of structures and polarities of metabolites, no single analytical technique is able to measure the entire metabolome — instead a varied set of experimental designs and instrumental technologies are used to measure specific portions. This has led to the development of many distinct data analysis and processing methods and software. There is hope that metabolomics can be utilized for clinical applications, in toxicology and to measure the exposome. However, for these applications to be realised data must be high quality, sufficiently standardised and annotated, and FAIR (Findable, Accessible, Interoperable and Reproducible). For this purpose, it is also important that standardised, FAIR software workflows are available. There has also recently been much concern over the reproducibility of scientific research, which FAIR and open data, and workflows can help to address. To this end, this thesis aims to assess current practices and standards of sharing data within the field of metabolomics, using metascientific approaches. The types of functions of software for processing and analysing metabolomics data is also assessed. Reporting standards are designed to ensure that the minimum information required to un- derstand and interpret the results of analysis are reported. However, poor reporting standards are ignored and not complied with. Compliance to the biological context Metabolomics Standards Initiative (MSI) guidelines was examined, in order to investigate their timeliness. The state of open data within the metabolomics community was examined by investigating how much publicly available metabolomics data there is and where has it been deposited. To explore whether journal data sharing policies are driving open metabolomics data, which journals publish articles that have their underlying data made open was also examined. However, open data alone is not inherently useful: if data is incomplete, lacking in quality or missing crucial metadata, it is not valuable. Conversely, if data are reused, this can demonstrate the worth of public data archiving. Levels of reuse of public metabolomics data were therefore examined. With greater than 250 software tools specific for metabolomics, practitioners are faced with a daunting task to select the best tools for data collection and analysis. To help educate researchers about what software is available, a taxonomy of metabolomics software tools and a GitHub pages wiki, which provides extensive details about all included software, have been developed.
description: European Molecular Biology Laboratory (EMBL) PhD studentship
Multigap superconductivity in locally non-centrosymmetric SrPtAs: An As nuclear quadrupole resonance investigation
Creators: name: Brückner, F.
name: Sarkar, R.
name: Günther, M.
name: Kühne, H.
name: Luetkens, H.
name: Neupert, T.
name: Reyes, A. P.
name: Kuhns, P. L.
name: Biswas, P. K.
name: Stürzer, T.
name: Johrendt, D.
name: Klauss, H. -H.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We report detailed $^{75}$As-NQR investigations of the locally non-centrosymmetric superconductor SrPtAs. The spin-lattice relaxation studies prove weakly coupled multi-gap superconductivity. The Hebel-Slichter peak, a hallmark of conventional superconductivity, is strongly suppressed, which points to an unconventional superconducting state. The observed behavior excludes a superconducting order parameter with line nodes and is consistent with proposed $f$-wave and chiral $d$-wave order parameters.
Vortex Creep Against Toroidal Flux Lines, Crustal Entrainment, and Pulsar Glitches
Creators: name: Gügercinoğlu, Erbil
name: Alpar, M. Ali
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: A region of toroidally oriented quantized flux lines must exist in the proton superconductor in the core of the neutron star. This region will be a site of vortex pinning and creep. Entrainment of the neutron superfluid with the crustal lattice leads to a requirement of superfluid moment of inertia associated with vortex creep in excess of the available crustal moment of inertia. This will effect constraints on the equation of state. The toroidal flux region provides the moment of inertia necessary to complement the crust superfluid with postglitch relaxation behavior fitting the observations.
description: Published in The Astrophysical Journal Letters
Controlling Magnetic and Electric Nondipole Effects with Synthesized Two Perpendicularly Propagating Laser Fields
Creators: name: Dou, Yankun
name: Fang, Yiqi
name: Ge, Peipei
name: Liu, Yunquan
Publisher: name: arXiv
Year: 2023
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: Nondipole effects are ubiquitous and crucial in light-matter interaction. However, they are too weak to be directly observed. In strong-field physics, motion of electrons is mainly confined in transverse plane of light fields, which suppresses the significance of nondipole effects. Here, we present a theoretical study on enhancing and controlling the nondipole effect by using the synthesized two perpendicularly propagating laser fields. We calculate the three-dimensional photoelectron momentum distributions of strong-field tunneling ionization of hydrogen atoms using the classical trajectory Monte Carlo model and show that the nondipole effects are noticeably enhanced in such laser fields due to their remarkable influences on the sub-cycle photoelectron dynamics. In particular, we reveal that the magnitudes of the magnetic and electric components of nondipole effects can be separately controlled by modulating the ellipticity and amplitude of driving laser fields. This novel scenario holds promising applications for future studies with ultrafast structured light fields.
description: 14 pages, 4 figures, 49 references
Combined state-adding and state-deleting approaches to type III multi-step rationally-extended potentials: applications to ladder operators and superintegrability
Creators: name: Marquette, Ian
name: Quesne, Christiane
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mathematical Physics (math-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Type III multi-step rationally-extended harmonic oscillator and radial harmonic oscillator potentials, characterized by a set of $k$ integers $m_1$, $m_2$, \ldots, $m_k$, such that $m_1 < m_2 < \cdots < m_k$ with $m_i$ even (resp.\ odd) for $i$ odd (resp.\ even), are considered. The state-adding and state-deleting approaches to these potentials in a supersymmetric quantum mechanical framework are combined to construct new ladder operators. The eigenstates of the Hamiltonians are shown to separate into $m_k+1$ infinite-dimensional unitary irreducible representations of the corresponding polynomial Heisenberg algebras. These ladder operators are then used to build a higher-order integral of motion for seven new infinite families of superintegrable two-dimensional systems separable in cartesian coordinates. The finite-dimensional unitary irreducible representations of the polynomial algebras of such systems are directly determined from the ladder operator action on the constituent one-dimensional Hamiltonian eigenstates and provide an algebraic derivation of the superintegrable systems whole spectrum including the level total degeneracies.
description: 46 pages
Gauge Invariance and Spinon-Dopon Confinement in the t-J Model: implications for Fermi Surface Reconstruction in the Cuprates
Creators: name: Ferraz, Alvaro
name: Kochetov, Evgueny
Publisher: name: arXiv
Year: 2013
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We discuss the application of the two-band spin-dopon representation of the t-J model to address the issue of the Fermi surface reconstruction observed in the cuprates. We show that the electron no double occupancy (NDO) constraint plays a key role in this formulation. In particular, the auxiliary lattice spin and itinerant dopon degrees of freedom of the spin-dopon formulation of the t-J model are shown to be confined in the emergent U(1) gauge theory generated by the NDO constraint. This constraint is enforced by the requirement of an infinitely large spin-dopon coupling. As a result, the t-J model is equivalent to a Kondo-Heisenberg lattice model of itinerant dopons and localized lattice spins at infinite Kondo coupling at all dopings. We show that mean-field treatment of the large vs small Fermi surface crossing in the cuprates which leaves out the NDO constraint, leads to inconsistencies and it is automatically excluded form the t - J model framework.
RweetMiner: Automatic identification and categorization of help requests on twitter during disasters
Creators: name: Ullah, Irfan
name: Khan, Sharifullah
name: Imran, Muhammad
name: Lee, Young-Koo
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computation and Language (cs.CL)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Catastrophic events create uncertain situations for humanitarian organizations locating and providing aid to affected people. Many people turn to social media during disasters for requesting help and/or providing relief to others. However, the majority of social media posts seeking help could not properly be detected and remained concealed because often they are noisy and ill-formed. Existing systems lack in planning an effective strategy for tweet preprocessing and grasping the contexts of tweets. This research, first of all, formally defines request tweets in the context of social networking sites, hereafter rweets, along with their different primary types and sub-types. Our main contributions are the identification and categorization of rweets. For rweet identification, we employ two approaches, namely a rule-based and logistic regression, and show their high precision and F1 scores. The rweets classification into sub-types such as medical, food, and shelter, using logistic regression shows promising results and outperforms existing works. Finally, we introduce an architecture to store intermediate data to accelerate the development process of the machine learning classifiers.
Adelocera mayae Vats and Kashyap 1992
Creators: name: Kotru, Akash
name: Chandran, Nithya
name: Dubey, Anil Kumar
name: Prosvirov, Alexander S.
Publisher: name: Zenodo
Year: 2025
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Elateridae
Adelocera
Adelocera mayae

description: Adelocera mayae Vats and Kashyap, 1992
Adelocera mayae Vats and Kashyap, 1992: 11.
Type depository. Holotype (NPC-IARI).
Type locality. Haryana (Kurukshetra).
Distribution. India: Haryana (Chakraborty, Chakrabarti, 2000).
Literature. Vats and Kashyap (1992: 11): original description; Chakraborty and Chakrabarti (2000: 76): catalogue.
description: Published as part of Kotru, Akash, Chandran, Nithya, Dubey, Anil Kumar & Prosvirov, Alexander S., 2025, A catalogue of Indian Agrypninae Candèze, 1857 (Coleoptera: Elateridae), pp. 1-66 in Zootaxa 5614 (1) on page 9, DOI: 10.11646/zootaxa.5614.1.1, http://zenodo.org/record/15217075
S-Nitrosylation of Clopidogrel inhibits LPS induced macrophage activation through NO/soluble Guanylate Cyclase pathways
Creators: name: Changjiang Guo
name: Kamat, Samir
name: Xiaowei Xu
name: Gow, Andrew
Publisher: name: F1000 Research Limited
Year: 2019

description: Rationale: Thiols from thienopyridines react with nitrite in stomach to form S-nitroso-derivatives (Th-SNO). Clopidogrel is one of thienopyridine drugs, which primarily inhibits platelet through P2Y12 receptor. Recent evidence shows that SNO-Clopidogrel forms in vitro and this Th-SNO may deliver NO to the blood stream. Circulating monocytic cells are key element to both the adaptive and the innate immune systems. Inappropriate monocytic activation leading in the vascular system leads to foam cell formation and
platelet aggregation. S-nitrosothiols have the potential to inhibit macrophage activity. SNO-clopidogrel is not stable and decays to release NO in vivo. We hypothesized that the formation of SNOclopidogrel
may regulate macrophage activation by NO.
Methods and Results: The formation of SNO-clopidogrel was determined by copper-cysteine reduction system and measured by NOA. Raw264.7 cells and primary isolated bone marrow derived macrophages were incubated with or without SNO-clopidogrel for 30 minutes and then challenged with LPS ( 100 or 1000 ng/ml) for 6h for mRNA or for 24 h for protein preparation. Nitrite production in the medium was measured by NOA. mRNA expression of macrophage markers of IL-1beta, IL-6, NOS2,CCL2, and Ptgs2 were quantified by real-time qPCR. NF-kappaB activation was determined by Raw-blue cells, which are NF-kappaB promoter derived secreted embryonic alkylate phosphatase (SEAP) reporter system. Expression of iNOS was determined by western blot. Incubation of clopidogrel with nitrite forms 3% of SNO-clopidogrel. SNOclopidogrel was degraded under UV exposure. SNO-clopidogrel treatment inhibited nitrite production in Raw264.7 macrophages. Expression of IL-1beta, IL-6, NOS2, Arg 1, CCL2, and Ptgs2 mRNA was inhibited by SNO-clopidogrel in a dose (0.1-6 μM) and time dependent fashion. However, nitrite and clopidoel did no inhibited mRNA expression of pro-inflammatory mediators and protein expression of iNOS. The inhibitory effect of SNO-clopidogrel was mediated by inhibition of NF-kappaB activity since incubation of SNOclopidogrel inhibited SEAP activity in Raw-blue cells. Preincubation of SNO-clopidogrel with myoglobin to absorb NO abrogated SNO-clopidogrel induced inhibition of IL-1beta and NOS2 mRNA in Raw264.7 and primary BMDM. When the cells were preincubated with ODQ, an sGC inhibitor, the SNO-clopidogrel inhibitory effect was abolished, indicating that sGC is involved in the SNO-clopidogrel mediated inhibition.
Conclusions: This study suggests that SNO-clopidogrel formation is one of the metabolic pathways of this drug and SNO-clopidogrel inhibits macrophage activation through novel NO signaling pathway.
Anpassungen der Sozialhilfe für Drittstaatenangehörige nach Ausländerund Integrationsgesetz: Eine berufsethische Betrachtung
Creators: name: Stauffacher, Sabrina
Publisher: name: Zenodo
Year: 2022

description: Die Arbeit setzt sich mit Anpassungen der Sozialhilfe für Drittstaatenangehörige nach Ausländer- und Integrationsgesetz entlang von vier Fragen von auseinander. Es wird auf eine berufsethische Bewertung abgezielt. Die Entscheidungsfindung wird entlang eines Modells nach Bleisch et. al durchgeführt, ergänzt durch die Grundlagen nach Schmid. Zu Beginn erfolgt eine Erläuterung der beiden Rechtsgebiete Sozialhilfe und Migration und wie sich diese heute schon aufeinander beziehen. Obwohl sie sehr unterschiedliche Ziele und Zwecke beinhalten, nimmt die Verknüpfung in den letzten Jahren stetig zu. Das Migrationsrecht wirkt dabei stärker auf die Sozialhilfe ein als andersherum. Anschliessend wird die Vernehmlassung Änderung des Ausländer- und Integrationsgesetzes (AIG) – Einschränkungen der Sozialhilfeleistungen für Ausländerinnen und Ausländer aus Drittstaaten, ihre Entstehung und die Massnahmen erläutert. Die zentrale Massnahme ist der Tieferer Unterstützungsansatz bei der Sozialhilfe für Personen mit Kurz- und Aufenthaltsbewilligung in den ersten drei Jahren nach Bewilligungserteilung. Die berufsethische Bewertung kommt zum Schluss, dass die Massnahme aus der Perspektive der Sozialen Arbeit klar abzulehnen ist. Daraufhin werden Handlungsaufforderungen für die Soziale Arbeit formuliert. Primär wird eine verstärkte Öffentlichkeitsarbeit gefordert. Die direkte Zusammenarbeit auf den Sozialdiensten wird herausfordernder. Die Beziehungsgestaltung und das Bewusstsein des Tripelmandats werden immer wichtiger.
description: + Code Diss LU: hslusa basa + Fussnote: Bachelor-Arbeit, Hochschule Luzern – Soziale Arbeit, Studienrichtung Sozialarbeit, 2022 + NL-Code: NLLUHSA202209
Decision Support System for Chronic Diseases Based on Drug-Drug Interactions
Creators: name: Bian, Tian
name: Jiang, Yuli
name: Li, Jia
name: Xu, Tingyang
name: Rong, Yu
name: Su, Yi
name: Kwok, Timothy
name: Meng, Helen
name: Cheng, Hong
Publisher: name: arXiv
Year: 2023
Subjects: subject: Machine Learning (cs.LG)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Many patients with chronic diseases resort to multiple medications to relieve various symptoms, which raises concerns about the safety of multiple medication use, as severe drug-drug antagonism can lead to serious adverse effects or even death. This paper presents a Decision Support System, called DSSDDI, based on drug-drug interactions to support doctors prescribing decisions. DSSDDI contains three modules, Drug-Drug Interaction (DDI) module, Medical Decision (MD) module and Medical Support (MS) module. The DDI module learns safer and more effective drug representations from the drug-drug interactions. To capture the potential causal relationship between DDI and medication use, the MD module considers the representations of patients and drugs as context, DDI and patients' similarity as treatment, and medication use as outcome to construct counterfactual links for the representation learning. Furthermore, the MS module provides drug candidates to doctors with explanations. Experiments on the chronic data collected from the Hong Kong Chronic Disease Study Project and a public diagnostic data MIMIC-III demonstrate that DSSDDI can be a reliable reference for doctors in terms of safety and efficiency of clinical diagnosis, with significant improvements compared to baseline methods.
Case series of soft-tissue infections due to Streptococcus minor
Creators: name: Lay, Tan Peck
name: Chiak, James Sim Heng
name: Koh Tse Hsien
Publisher: name: F1000 Research Limited
Year: 2019

description: Streptocoocus minor was first isolated from faecal samples and tonsils of domestic animals in 2004. To date, only 2 cases of S. minor causing human infection have been reported. One was associated with peritonitis while the other was reported as a cause of wound infection after a dog bite. We aim to characterise infections due to S. minor that were isolated in our laboratory.
Modulated cycles in an illustrative solar dynamo model with competing alpha effects
Creators: name: Cole, Laura
name: Bushby, Paul
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The large-scale magnetic field in the Sun varies with a period of approximately 22 years, although the amplitude of the cycle is subject to long-term modulation with recurrent phases of significantly reduced magnetic activity. It is believed that a hydromagnetic dynamo is responsible for producing this large-scale field, although this dynamo process is not well understood. Within the framework of mean-field dynamo theory, our aim is to investigate how competing mechanisms for poloidal field regeneration (namely a time delayed Babcock-Leighton surface alpha-effect and an interface-type alpha-effect), can lead to the modulation of magnetic activity in a deep-seated solar dynamo model. We solve the standard alpha-omega dynamo equations in one spatial dimension, including source terms corresponding to both of the the competing alpha-effects in the evolution equation for the poloidal field. This system is solved using two different methods. In addition to solving the one-dimensional partial differential equations directly, using numerical techniques, we also use a local approximation to reduce the governing equations to a set of coupled ordinary differential equations (ODEs), which are studied using a combination of analytical and numerical methods. In the ODE model, it is straightforward to find parameters such that a series of bifurcations can be identified as the time delay is increased, with the dynamo transitioning from periodic states to chaotic states via multiply periodic solutions. Similar transitions can be observed in the full model, with the chaotically modulated solutions exhibiting solar-like behaviour.
description: Reproduced with permission from Astronomy & Astrophysics
Large-margin Learning of Compact Binary Image Encodings
Creators: name: Paisitkriangkrai, Sakrapee
name: Shen, Chunhua
name: Hengel, Anton van den
Publisher: name: arXiv
Year: 2014
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: The use of high-dimensional features has become a normal practice in many computer vision applications. The large dimension of these features is a limiting factor upon the number of data points which may be effectively stored and processed, however. We address this problem by developing a novel approach to learning a compact binary encoding, which exploits both pair-wise proximity and class-label information on training data set. Exploiting this extra information allows the development of encodings which, although compact, outperform the original high-dimensional features in terms of final classification or retrieval performance. The method is general, in that it is applicable to both non-parametric and parametric learning methods. This generality means that the embedded features are suitable for a wide variety of computer vision tasks, such as image classification and content-based image retrieval. Experimental results demonstrate that the new compact descriptor achieves an accuracy comparable to, and in some cases better than, the visual descriptor in the original space despite being significantly more compact. Moreover, any convex loss function and convex regularization penalty (e.g., $ \ell_p $ norm with $ p \ge 1 $) can be incorporated into the framework, which provides future flexibility.
description: 13 pages
title: Report on the analysis of the Asia Pacific Regional Geodetic Project (APRGP) GPS Campaign 2022
Creators: name: G., Hu
name: G., Hu
Publisher: name: Commonwealth of Australia (Geoscience Australia)
Year: 2023
Subjects: subject: Positioning Australia
subject: GNSS
subject: Geodesy
subject: Datum
subject: Earth system sciences
subject: Published_External

description: The annual Asia Pacific Regional Geodetic Project (APRGP) GPS campaign is an activity of the Geodetic Reference Frame Working Group (WG) of the Regional Committee of United Nations Global Geospatial Information Management for Asia and the Pacific (UN-GGIM-AP). This document describes the data analysis of the APRGP GPS campaign undertaken between the 11th and 17nd of September 2022. Campaign GPS data collected at 116 sites in seven countries across the Asia Pacific region were processed using version 5.2 of the Bernese GNSS Software in a regional network together with selected IGS (International GNSS Service) sites. The GPS solution was constrained to the ITRF2014 reference frame by adopting IGS14 coordinates on selected IGS reference sites and using the final IGS earth orientation parameters and satellite ephemerides products. The average of the root mean square repeatability of the station coordinates for the campaign was 2.0 mm, 2.4 mm and 7.5 mm in north, east and up components of station position respectively.
Flight Testing of Low-Cost Inertial Navigation System with Dual Antenna GPS Heading Functionality in Polar Region
Creators: name: Radek Baranek, Radek Reznicek
Publisher: name: Zenodo
Year: 2022
Subjects: Clean Sky 2 Joint Undertaking
European Union (EU)
Horizon 2020

description: This project has received funding from the Clean Sky 2 Joint Undertaking (JU) under grant agreement No 945583. The JU receives support from the European Union’s Horizon 2020 research and innovation programme and the Clean Sky 2 JU members other than the Union. The results, opinions, conclusions, etc. presented in this work are those of the author(s) only and do not necessarily represent the position of the JU; the JU is not responsible for any use made of the information contained herein.
About acoustic detection of ice in the fuel aircraft tanks
Creators: name: Stamm, Michael
name: Pfeiffer, Helge
name: Reynaert, Johan
name: Wevers, Martine
Publisher: name: Zenodo
Year: 2018
Subjects: Acoustic Emission
Melting ice
Aerospace

description: During the daily aircraft operation, water accumulation in fuel tanks by condensation and contaminated fuel cannot be prevented. While the “free water” potentially leads to microbial corrosion and the misreading of fuel meters, freezing water can harm the aircraft fuel system in the fuel tank, resulting in potentially hazardous situations for passengers, crew members and ground personnel. The regular performed draining of the tank removes almost all liquid water from the bottom of the tank. Moreover, this procedure only reduced liquid water in the tank and is not applicable on ice in the tank. In addition, neither the remaining amount of liquid water in the tank nor the amount of ice can be estimated after or before the draining procedure. Up to now, there is no generally accepted “non-invasive” method available to determine the amount of water and ice in the tank. The detection of the ice in the tank is an ideal field of application for diverse advanced acoustic, ultrasonic and thermal NDT methods which are tested to estimate the location and volume of ice in the tank. First experiments showed the applicability of passive acoustic as well as thermal measurements for the detection of melting ice on plate-like structures. Advanced experiments are performed on a tank model made from the materials comparable to the aircraft tank (material, thickness, coatings, etc.). To simulate realistic conditions, kerosene and water are cooled down as present in the fuel tank. Results show that passive ultrasonic measurements are applicable for the localization of subsurface ice in the tank. Research leading to these results has received funding from the “NDTonAIR” project (Training Network in Non-Destructive Testing and Structural Health Monitoring of Aircraft structures) under the action: H2020-MSCA-ITN-2016-GRANT 722134.
Robust Estimation in Generalised Linear Models : The Density Power Divergence Approach
Creators: name: Ghosh, Abhik
name: Basu, Ayanendranath
Publisher: name: arXiv
Year: 2014
Subjects: subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences

description: The generalised linear model (GLM) is a very important tool for analysing real data in biology, sociology, agriculture, engineering and many other application domain where the relationship between the response and explanatory variables may not be linear or the distributions may not be normal in all the cases. However, quite often such real data contain a significant number of outliers in relation to the standard parametric model used in the analysis; in such cases the classical maximum likelihood estimator may fail to produce reasonable estimators and related inference could be unreliable. In this paper, we develop a robust estimation procedure for the generalised linear models that can generate robust estimators with little loss in efficiency. We will also explore two particular cases of the generalised linear model in details -- Poisson regression for count data and logistic regression for binary data -- which are widely applied in real life experiments. We will also illustrate the performance of the proposed estimators through several interesting data examples
description: Pre-print, 22 pages
Age of Information of CSMA/CA Based Wireless Networks
Creators: name: Li, Liang
name: Dong, Yunquan
name: Pan, Chengsheng
name: Fan, Pingyi
Publisher: name: arXiv
Year: 2023
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: We consider a wireless network where N nodes compete for a shared channel over the CSMA/CA protocol to deliver observed updates to a common remote monitor. For this network, we rate the information freshness of the CSMA/CA based network using the age of information (AoI). Different from previous work, the network we consider is unsaturated. To theoretically analyze the transmission behavior of the CSMA/CA based network, we, therefore, develop an equivalent and tractable Markov transmission model. Based on this newly developed model, the transmission probability, collision probability and average AoI of the network are obtained. Our numerical results show that as the packet rate and the number of nodes increase, both the transmission probability and collision probability are increasing; the average AoI first decreases and then increases as the packet rate increases and increases with the number of nodes.
description: 6 pages, 7 Figs
Deciphering charmoniumlike exotic states in photon - hadron interactions at RHIC and LHC energies
Creators: name: Goncalves, V. P.
name: da Silva, M. L. L.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: In this paper we propose the study of the photoproduction of charmoniumlike states in $pp$ collisions at RHIC and LHC energies and estimate the rapidity distribution and total cross sections for the production of the exotic hadrons $Y(3940)$, $X(3915)$, $Z(4430)$ and $Z_c(3900)$. We demonstrate that the experimental analysis of this process can provide complementary and independent checks on these states, and help to understand their underlying nature.
description: 6 pages, 4 figures, 1 Table. Version to be published in Physical Review D
Estimating Age of Information Using Finite Order Moments
Creators: name: Chen, Licheng
name: Dong, Yunquan
Publisher: name: arXiv
Year: 2023
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: Age of information (AoI) has been proposed as a more suitable metric for characterizing the freshness of information than traditional metrics like delay and throughput. However, the calculation of AoI requires complex analysis and strict end-to-end synchronization. Most existential AoI-related works have assumed that the statistical characterizations of the arrival process and the service process are known. In fact, due to the randomness of the sources and the channel noises, these processes are often unavailable in reality. To this end, we propose a method to estimate the average AoI on a point-to-point wireless Rayleigh channel, which uses the available finite order statistical moments of the arrival process. Based on this method, we explicitly present the upper and lower bounds on the average AoI of the system. Our results show that 1) with the increase of the traffic intensity, the absolute error of the estimated average AoI bounds is first increasing and then decreasing, while the average AoI is monotonically increasing; 2) the average AoI can be effectively approximated by using the first two order moment estimation bounds, especially when traffic intensity is small or approaches unity; 3) tighter bounds can be obtained by using more moments.
description: 6pages, 9 Figs
Generic regimes of quantum many-body dynamics of trapped bosonic systems with strong repulsive interactions
Creators: name: Streltsova, Oksana I.
name: Alon, Ofir E.
name: Cederbaum, Lorenz S.
name: Streltsov, Alexej I.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: Two generically different but universal dynamical quantum many-body behaviors are discovered by probing the stability of trapped fragmented bosonic systems with strong repulsive finite/long range inter-particle interactions. We use different time-dependent processes to destabilize the systems -- a sudden displacement of the trap is accompanied by a sudden quench of the strength of the inter-particle repulsion. A rather moderate non-violent evolution of the density in the first "topology-preserved" scenario is contrasted with a highly-non-equilibrium dynamics characterizing an explosive changes of the density profiles in the second scenario. The many-body physics behind is identified and interpreted in terms of self-induced time-dependent barriers governing the respective under- and over-a-barrier dynamical evolutions. The universality of the discovered scenarios is explicitly confirmed in 1D, 2D and 3D many-body computations in (a)symmetric traps and repulsive finite/long range inter-particle interaction potentials of different shapes. Implications are briefly discussed.
description: (see Ancillary files with 2D and 3D movies in MPG format)
Engagement in Child and Adolescent Weight Management Programmes
Creators: name: Nobles, James
Publisher: name: Leeds Beckett University
Year: 2022
Subjects: Uncategorized

description: Introduction: Engagement denotes the extent to which, and how, individuals and families participate in a weight management (WM) programme. Data suggest that between 8-83% of families do not complete the paediatric WM programme which they initiated, but the underlying mechanisms which drive participant engagement are poorly understood. This thesis aims to 1) establish if participant-and programme-characteristics are associated with various engagement trajectories in paediatric WM programmes, and 2) explain the factors associated with initial-and continued-programme engagement. The Model of Retention – translated from Higher Education – underpins this thesis. Study 1: Methods – Secondary data of 2948 MoreLife participants (age: 10.44±2.80 years, BMI SDS: 2.48±0.87 units, white ethnicity: 70.52 %) were used. Multivariable linear regression and multivariable logistic regression examined the predictors of attendance and engagement groups (e.g. early dropout, late dropout, completion…) respectively. Results – Six variables were associated with engagement (Programme: group size, delivery period, & programme year; Participant: BMI SDS, Ethnicity, & IMD score). Programme characteristics were stronger predictors of engagement than participant characteristics, and the predictors varied between engagement groups. A small proportion of the variance in engagement was explained by the final predictors. Study 2: Methods – Qualitative data were collected from 31 families (parents and children) across three paediatric WM programmes (MoreLife, SHINE, and Weigh To Go) at the early-and late-programme stages. The Model of Retention guided the lines of inquiry and data analysis framework. Results – Six factors were central to engagement: 1) having support; 2) self-efficacy in one’s ability to attend; 3) coping with the demands of programme engagement; 4) controlling engagement decisions; 5) experiencing benefits from engagement; and, 6) having an engagement promoting programme design. The importance and dominance of these factors varied between the early-and lateprogramme stages, and moreover, between parents and children. Conclusions: Participant engagement was demonstrated to be a complex phenomenon; one that is challenging to predict and currently better explained through qualitative investigation. This thesis, and the collective discussion within, illuminate methods of improving WM programme engagement through design and delivery modification. The Model of Retention offers a means of comprehensively explaining engagement. Finally, this thesis provides a conceptual framework for discussing programme engagement.
Hybrid Sequencing of Staphylococcus aureus from Chronic Rhinosinusitis Patients Reveals Widespread Beta-Lactamase Plasmids Associated with Chromosomal Varation in Virulence Genes
Creators: name: Bouras, George
Publisher: name: Zenodo
Year: 2022

description: Staphylococcus aureus isolates colonising the sinuses of patients with CRS commonly carry extra-chromosomal plasmids harbouring beta-lactamase genes. Those plasmids associate with chromosomal mutations in virulence genes that may be involved in mediating chronic inflammation.
Radio Variability and Random Walk Noise Properties of Four Blazars
Creators: name: Park, Jong-Ho
name: Trippe, Sascha
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present the results of a time series analysis of the long-term radio lightcurves of four blazars: 3C 279, 3C 345, 3C 446, and BL Lacertae. We exploit the data base of the University of Michigan Radio Astronomy Observatory (UMRAO) monitoring program which provides densely sampled lightcurves spanning 32 years in time in three frequency bands located at 4.8, 8, and 14.5 GHz. Our sources show mostly flat or inverted (spectral indices -0.5 < alpha < 0) spectra, in agreement with optically thick emission. All lightcurves show strong variability on all time scales. Analyzing the time lags between the lightcurves from different frequency bands, we find that we can distinguish high-peaking flares and low-peaking flares in accord with the classification of Valtaoja et al. (1992). The periodograms (temporal power spectra) of the observed lightcurves are consistent with random-walk powerlaw noise without any indication of (quasi-)periodic variability. The fact that all four sources studied are in agreement with being random-walk noise emitters at radio wavelengths suggests that such behavior is a general property of blazars.
description: 9 pages, 3 figures, 1 table; to appear in ApJ (received 2013 December 18, accepted 2014 February 25)
Statistics of the inverse-cascade regime in two-dimensional magnetohydrodynamic turbulence
Creators: name: Banerjee, Debarghya
name: Pandit, Rahul
Publisher: name: arXiv
Year: 2014
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We present a detailed direct numerical simulation of statistically steady, homogeneous, isotropic, two-dimensional magnetohydrodynamic (2D MHD) turbulence. Our study concentrates on the inverse cascade of the magnetic vector potential. We examine the dependence of the statistical properties of such turbulence on dissipation and friction coefficients. We extend earlier work sig- nificantly by calculating fluid and magnetic spectra, probability distribution functions (PDFs) of the velocity, magnetic, vorticity, current, stream-function, and magnetic-vector-potential fields and their increments. We quantify the deviations of these PDFs from Gaussian ones by computing their flatnesses and hyperflatnesses. We also present PDFs of the Okubo-Weiss parameter, which distin- guishes between vortical and extensional flow regions, and its magnetic analog. We show that the hyperflatnesses of PDFs of the increments of the stream-function and the magnetic vector potential exhibit significant scale dependence and we examine the implication of this for the multiscaling of structure functions. We compare our results with those of earlier studies.
Neural Airport Ground Handling
Creators: name: Wu, Yaoxin
name: Zhou, Jianan
name: Xia, Yunwen
name: Zhang, Xianli
name: Cao, Zhiguang
name: Zhang, Jie
Publisher: name: arXiv
Year: 2023
Subjects: subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Airport ground handling (AGH) offers necessary operations to flights during their turnarounds and is of great importance to the efficiency of airport management and the economics of aviation. Such a problem involves the interplay among the operations that leads to NP-hard problems with complex constraints. Hence, existing methods for AGH are usually designed with massive domain knowledge but still fail to yield high-quality solutions efficiently. In this paper, we aim to enhance the solution quality and computation efficiency for solving AGH. Particularly, we first model AGH as a multiple-fleet vehicle routing problem (VRP) with miscellaneous constraints including precedence, time windows, and capacity. Then we propose a construction framework that decomposes AGH into sub-problems (i.e., VRPs) in fleets and present a neural method to construct the routing solutions to these sub-problems. In specific, we resort to deep learning and parameterize the construction heuristic policy with an attention-based neural network trained with reinforcement learning, which is shared across all sub-problems. Extensive experiments demonstrate that our method significantly outperforms classic meta-heuristics, construction heuristics and the specialized methods for AGH. Besides, we empirically verify that our neural method generalizes well to instances with large numbers of flights or varying parameters, and can be readily adapted to solve real-time AGH with stochastic flight arrivals. Our code is publicly available at: https://github.com/RoyalSkye/AGH.
description: Accepted by IEEE Transactions on Intelligent Transportation Systems (TITS)
Optimization and Characterization of Silica Synthesized from Rice husk
Creators: name: Mizer Girmay
Publisher: name: Zenodo
Year: 2019

description: Rice husks are agricultural biomass waste, which is considered as renewable resources that are produced every year in Ethiopia. Despite of its non-commercial value and causing environmental pollutions, its ash content is rich in silica (SiO2) and becomes an economic potential source. This study aims at utilizing this agricultural biomass waste into valuable product, silica. Silica (SiO2) was prepared by using rice husk ash (RHA) as a source of silicate (SiO-23) . Then further reaction of the ash with NaOH has formed Sodium silicate (Na2SiO3) solution. Then, titration of this solution with HCl forms the precipitation of silica-gel. The effect of acid pretreatment on the removal of metallic impurities and its percentage purity as well as on the properties of RHA was examined using Atomic Absorption Spectrophotometer (AAS).
Using Network Coding to Achieve the Capacity of Deterministic Relay Networks with Relay Messages
Creators: name: Zewail, Ahmed A.
name: Mohasseb, Yahya
name: Nafie, Mohammed
name: Gamal, Hesham El
Publisher: name: arXiv
Year: 2014
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: In this paper, we derive the capacity of the deterministic relay networks with relay messages. We consider a network which consists of five nodes, four of which can only communicate via the fifth one. However, the fifth node is not merely a relay as it may exchange private messages with the other network nodes. First, we develop an upper bound on the capacity region based on the notion of a single sided genie. In the course of the achievability proof, we also derive the deterministic capacity of a 4-user relay network (without private messages at the relay). The capacity achieving schemes use a combination of two network coding techniques: the Simple Ordering Scheme (SOS) and Detour Schemes (DS). In the SOS, we order the transmitted bits at each user such that the bi-directional messages will be received at the same channel level at the relay, while the basic idea behind the DS is that some parts of the message follow an indirect path to their respective destinations. This paper, therefore, serves to show that user cooperation and network coding can enhance throughput, even when the users are not directly connected to each other.
description: 12 pages, 5 figures, submitted to IEEE JSAC Network coding