cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
FINTECH ET LE SYTEME D'INFORMATION : IMPACT SUR LES PME
Creators: name: Touzani Oussama
name: Abdelkarim Moussa
Publisher: name: Zenodo
Year: 2024

description: L'impact combiné de la Fintech et du système d'information sur les petites et moyennes entreprises (PME) est profondément transformateur. La Fintech ouvre de nouvelles perspectives de croissance en offrant aux PME un accès simplifié aux financements, en automatisant les processus financiers et en réduisant les coûts. Cependant, ces changements ne se limitent pas uniquement à des avantages financiers. Ils permettent également aux PME de rivaliser sur un marché mondial qui évolue constamment. Le système d'information, quant à lui, deviennent le pilier de l'efficacité opérationnelle, de la gestion des données et de la prise de décision. En intégrant ce système, les PME peuvent optimiser leurs performances et assurer leur conformité réglementaire. Cependant, l'adoption de ces technologies pose également des défis importants pour les PME. Elles doivent faire face au défi majeur de la cybersécurité tout en cherchant à réaliser une intégration harmonieuse. En fin de compte, le succès des PME repose sur leur capacité à exploiter intelligemment les opportunités offertes par la Fintech et à tirer parti des systèmes d'information efficaces pour naviguer dans cet environnement commercial en constante évolution.
Crossed product algebras and generalized entropy for subregions
Creators: name: Ahmad, Shadi Ali
name: Jefferson, Ro
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: An early result of algebraic quantum field theory is that the algebra of any subregion in a QFT is a von Neumann factor of type III$_1$, in which entropy cannot be well-defined because such algebras do not admit a trace or density states. However, associated to the algebra is a modular group of automorphisms characterizing the local dynamics of degrees of freedom in the region, and the crossed product of the algebra with its modular group yields a type II$_\infty$ factor, in which traces and hence von Neumann entropy can be well-defined. In this work, we generalize recent constructions of the crossed product algebra for the TFD to, in principle, arbitrary spacetime regions in arbitrary QFTs, paving the way to the study of entanglement entropy without UV divergences. In contrast to previous works, we emphasize that this construction is independent of gravity. In this sense, the crossed product construction represents a refinement of Haag's assignment of nets of observable algebras to spacetime regions by providing a natural construction of a type II factor. We present several concrete examples: a QFT in Rindler space, a CFT in an open ball of Minkowski space, and arbitrary boundary subregions in AdS/CFT. In the holographic setting, we provide a novel argument for why the bulk dual must be the entanglement wedge, and discuss the distinction arising from boundary modular flow between causal and entanglement wedges for excited states and disjoint regions.
description: Minor clarifications, matches published version
title: Sustainable Fisheries Management For Ecosystems - With Examples For Seasonal Allocation
Creators: name: Fowler, Charles W.
name: Crawford, Robert J.M.
Publisher: name: ASC 1999
Year: 2024
Subjects: Ecosystem observation, processes and dynamics
Pressures, impacts, conservation, and management

description: No abstracts are to be cited without prior reference to the author.A new form of management is being suggested wherein sustainable fisheries would be achieved by regulating harvests to match patterns of resource consumption empirically observed among non-human species. This form of management has wide applications and accounts for the complexity of natural systems. It is systemic and has the qualities demanded of management. This approach would replace failing strategies (e.g. maximum sustainable yield, MSY) that take into account little more than population dynamics. It includes single-species, ecosystem, and biosphere applicatio􀁘. It is common to see allowable harvests decline as w􀁞 consider more elements of complexity (e.g. ecosystems, endangered species, species interactions, and the genetic consequences of selective harvesting). The endpoint of this trend can be found ifwe assume that the increasing complexity of resource models has a limit corresponding to the complexity of reality. We can then use empirical information directly related to each management question. There is consistency in management based on empirical examples of sustainability. In fisheries, for example, measures of over-fishing are consistent for ecosystems, individual species, multi-species groups, and the biosphere. There is also basis for other applications,. including the spatial allocation of harvests and establishing marine reserves. This paper details how this new approach would be use􀂎 to allocate 4arvests over time.
Cheilosia balkana Vujic 1994
Creators: name: Kočić, Anja
name: Vujić, Ante
name: Tot, Tamara
name: Milosavljević, Marina Janković
name: Groot, Maarten De
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Syrphidae
Cheilosia
Cheilosia balkana

description: Cheilosia balkana Vujić, 1994.
Regions: UC, SA.
Reference: Vujić (1994, 1996).
description: Published as part of Kočić, Anja, Vujić, Ante, Tot, Tamara, Milosavljević, Marina Janković & Groot, Maarten De, 2023, An updated checklist of the hoverflies (Diptera: Syrphidae) of Slovenia, pp. 189-227 in Zootaxa 5297 (2) on page 195, DOI: 10.11646/zootaxa.5297.2.2, http://zenodo.org/record/7993180
Derivative Pricing using Quantum Signal Processing
Creators: name: Stamatopoulos, Nikitas
name: Zeng, William J.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: Computational Finance (q-fin.CP)
subject: FOS: Physical sciences
subject: FOS: Economics and business

description: Pricing financial derivatives on quantum computers typically includes quantum arithmetic components which contribute heavily to the quantum resources required by the corresponding circuits. In this manuscript, we introduce a method based on Quantum Signal Processing (QSP) to encode financial derivative payoffs directly into quantum amplitudes, alleviating the quantum circuits from the burden of costly quantum arithmetic. Compared to current state-of-the-art approaches in the literature, we find that for derivative contracts of practical interest, the application of QSP significantly reduces the required resources across all metrics considered, most notably the total number of T-gates by $\sim 16$x and the number of logical qubits by $\sim 4$x. Additionally, we estimate that the logical clock rate needed for quantum advantage is also reduced by a factor of $\sim 5$x. Overall, we find that quantum advantage will require $4.7$k logical qubits, and quantum devices that can execute $10^9$ T-gates at a rate of $45$MHz. While in this work we focus specifically on the payoff component of the derivative pricing process where the method we present is most readily applicable, similar techniques can be employed to further reduce the resources in other applications, such as state preparation.
Cheilosia barbata Loew 1857
Creators: name: Kočić, Anja
name: Vujić, Ante
name: Tot, Tamara
name: Milosavljević, Marina Janković
name: Groot, Maarten De
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Syrphidae
Cheilosia
Cheilosia barbata

description: Cheilosia barbata Loew, 1857.
Regions: UC, GO, CL, LC, SA.
Reference: Strobl (1893b, 1910), Lambeck (1968), Vujić (1996), de Groot & Govedič (2008), Van Steenis et al. (2013).
description: Published as part of Kočić, Anja, Vujić, Ante, Tot, Tamara, Milosavljević, Marina Janković & Groot, Maarten De, 2023, An updated checklist of the hoverflies (Diptera: Syrphidae) of Slovenia, pp. 189-227 in Zootaxa 5297 (2) on page 195, DOI: 10.11646/zootaxa.5297.2.2, http://zenodo.org/record/7993180
Mini Minds: Exploring Bebeshka and Zlata Baby Models
Creators: name: Proskurina, Irina
name: Metzler, Guillaume
name: Velcin, Julien
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computation and Language (cs.CL)
subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: In this paper, we describe the University of Lyon 2 submission to the Strict-Small track of the BabyLM competition. The shared task is created with an emphasis on small-scale language modelling from scratch on limited-size data and human language acquisition. Dataset released for the Strict-Small track has 10M words, which is comparable to children's vocabulary size. We approach the task with an architecture search, minimizing masked language modelling loss on the data of the shared task. Having found an optimal configuration, we introduce two small-size language models (LMs) that were submitted for evaluation, a 4-layer encoder with 8 attention heads and a 6-layer decoder model with 12 heads which we term Bebeshka and Zlata, respectively. Despite being half the scale of the baseline LMs, our proposed models achieve comparable performance. We further explore the applicability of small-scale language models in tasks involving moral judgment, aligning their predictions with human values. These findings highlight the potential of compact LMs in addressing practical language understanding tasks.
description: CoNLL 2023 BabyLM Challenge
title: Maturation Process And Spawning Time Of Cod In The Bornholm Basin Of The Baltic Sea: Preliminary Results
Creators: name: Tomkiewicz, Jonna
name: Köster, Friedrich W.
Publisher: name: ASC 1999
Year: 2024
Subjects: Fisheries and aquaculture

description: No abstracts are to be cited without prior reference to the author. These preliminary results indicate that the duration of the spawning period of the stock depends on its size and sex composition, whereas the timing of peak spawning does not. The earlier start and also longer duration of the male spawning period in combination with earlier sexual maturation suggest that male mortality exceeds that of the females due to increased natural mortality as well as prolonged exposure to fisheries activities. This behaviour potentially explains the decreasing proportion of males with increasing size/age observed in the stock.
Point to the Hidden: Exposing Speech Audio Splicing via Signal Pointer Nets
Creators: name: Moussa, Denise
name: Hirsch, Germans
name: Wankerl, Sebastian
name: Riess, Christian
Publisher: name: arXiv
Year: 2023
Subjects: subject: Audio and Speech Processing (eess.AS)
subject: Sound (cs.SD)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Verifying the integrity of voice recording evidence for criminal investigations is an integral part of an audio forensic analyst's work. Here, one focus is on detecting deletion or insertion operations, so called audio splicing. While this is a rather easy approach to alter spoken statements, careful editing can yield quite convincing results. For difficult cases or big amounts of data, automated tools can support in detecting potential editing locations. To this end, several analytical and deep learning methods have been proposed by now. Still, few address unconstrained splicing scenarios as expected in practice. With SigPointer, we propose a pointer network framework for continuous input that uncovers splice locations naturally and more efficiently than existing works. Extensive experiments on forensically challenging data like strongly compressed and noisy signals quantify the benefit of the pointer mechanism with performance increases between about 6 to 10 percentage points.
description: published at Interspeech 2023 - Code: https://faui1-gitlab.cs.fau.de/mmsec/exposing-speech-audio-splicing-via-signal-pointer-nets
Guardians of the flora: the peril of pesticides in Caatinga to native bees behaviour
Creators: name: Abreu, Isabel Oliveira
name: Teixeira, Cláudia
name: Dos Santos, Jefferson Alves
name: Rebouças, Jaíne Santos
name: Caldas, Maiara Janine Machado
name: De Carvalho, Carlos Alfredo Lopes
name: Guimarães, Laura
name: Ferreira, Nuno G. C.
Publisher: name: Scientific Letters
Year: 2024

description: Background: The impact of pesticides on bees and the devastating effects of pesticides evokes a sense of urgency and concern among scientists and environmentalists alike [1]. Once hailed as agricultural saviours, pesticides now threaten bee populations globally. Neonicotinoids and organophosphates harm bee behaviour, hindering navigation, foraging, and reproduction. Sublethal doses further weaken bees, impacting survival and pollination efficiency [2]. These disruptions not only affect plant reproduction but also threaten the bee-plant relationship [3]. The cumulative effects of pesticides, alongside other stressors, pose a significant challenge to bee populations and the vital ecosystem services they provide, but they are yet unknown to many compounds and bee species. Objective: This study investigates the potential sublethal effects of the acaricide fenpyroximate on the behaviour of native bees in the Caatinga biome. Methods: Bees of the species Melipona quadrifasciata were exposed to sublethal doses of fenpyroximate, a common fungicide employed in the Caatinga region, under controlled conditions for 24 hours: 0.028 µg/bee (2.5% recommended field application dose) and 0.56 µg/bee (50% recommended field application dose). Following exposure, bee behaviour was recorded for 5 minutes, and the following parameters were analysed: percentage of time moving, average speed, average speed moving, travelled distance, meander, and explored area. Results: Our findings demonstrate significant alterations in bee behaviour at 0.56 µg/bee (half of the recommended field application dose) but not at 0.028 µg/bee. The most pronounced effects were observed on the speed and explored area, while no significant changes were detected for parameters such as the percentage of time moving or meandering. Conclusions: This study highlights the importance of incorporating behavioural assays in bee toxicity testing. Although we observed no immediate mortality at the tested doses, fenpyroximate impacted bee behaviour. These findings support the use of behavioural tests as a valuable tool for assessing the sublethal effects of pesticides.
description: Scientific Letters, Vol. 1 No. Sup 1 (2024)
Vectorising analog seismograms by techniques of machine learning for automated discriminating of seismic signal traces
Creators: name: Lemenkvoa, Polina
Publisher: name: Zenodo
Year: 2021

description: This presentation shows the case of digitising old historical scanned seismograms into vector format. The original paper-based seismograms in TIFF format were obtained from the archives of Royal Observatory of Belgium (ROB), Department of Seismology & Gravimetry. The data were recorded in 1954 by the Galitzine seismometer in Uccle station, Belgium. The aim was to digitise large archive of the old paper-based seismograms from ROB quickly, accurately and automatically. The data were processed using automatic computer-based methods of digitising and vectorising raster formats. The advantages of the machine learning (ML)/ deep learning (DL) methods are discussed and the case study is presented. Challenge of big data in seismic studies consists in the massif volumes of historical seismograms which exist in ROB and present a source of valuable information for geophysics. These archive old data must be processed, digitised and ‘revitalised’. This study contributed to the development of methods of signal processing by ML methods.
Cheilosia bracusi Vujic & Claussen 1994
Creators: name: Kočić, Anja
name: Vujić, Ante
name: Tot, Tamara
name: Milosavljević, Marina Janković
name: Groot, Maarten De
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Syrphidae
Cheilosia
Cheilosia bracusi

description: Cheilosia bracusi Vujić & Claussen, 1994.
Regions: UC, GO, CL, SA.
Reference: Vujić & Claussen (1994), Vujić (1996), Van Steenis et al. (2013).
description: Published as part of Kočić, Anja, Vujić, Ante, Tot, Tamara, Milosavljević, Marina Janković & Groot, Maarten De, 2023, An updated checklist of the hoverflies (Diptera: Syrphidae) of Slovenia, pp. 189-227 in Zootaxa 5297 (2) on page 195, DOI: 10.11646/zootaxa.5297.2.2, http://zenodo.org/record/7993180
Chronic exposure to the synthetic cathinone 3,4-methylenedioxypyrovalerone (MDPV) reveals enantioselective effects in Daphnia reproduction
Creators: name: Pérez-Pereira, Ariana
name: Costa, Pedro A.
name: Castro, Bruno B.
name: Carrola, João S.
name: Gonçalves, Virgínia M. F.
name: Ribeiro, Ana R. L.
name: Fernandes, Carla
name: Tiritan, Maria E.
name: Ribeiro, Cláudia
Publisher: name: Scientific Letters
Year: 2024

description: Background: The abuse of synthetic cathinones (SC) is popular among young consumers for recreational purposes and has increased dramatically in the last years. Consequently, SC have been found in the aquatic environment at low concentrations [1]. Since SC are designed to change nervous system function, they may pose unpredictable harmful effects on non-target organisms, such as aquatic invertebrates [2]. Many SC, like 3,4-methylenedioxypyrovalerone (MDPV), are chiral, and therefore may exhibit enantioselectivity including in ecotoxicity [2,3]. Considering the limited information available on MDPV ecotoxicity and enantioselectivity, it is vital to assess its potentially enantioselective effects on aquatic organisms. Objective: This work aimed to assess the adverse effects of (R,S)-MDPV, (R)-MDPV, and (S)-MDPV on the survival, body size and reproduction of Daphnia magna after 21 days of chronic exposure. Methods: Daphnia neonates (< 24 hours) were individually exposed to concentrations ranging between 0.10 to 1.79 µg L‒1 of (R,S)-MDPV, (R)-MDPV and (S)-MDPV for 21 days, using 10 organisms per concentration. Survival and reproduction data were recorded every day until day 21, whereas body size was determined at day 7 in a random subsample of 5 individuals per concentration (using microphotography analysis with ImageJ). Results: Chronic assays showed significant inhibition of the population rate of increase at 1.79 µg L‒1 and reproductive output (number of offspring per female) at 1.00 and 1.79 µg L‒1, only for (R)-MDPV. Although (R,S)-MDPV and both enantiomers did not cause significant effects in mortality, it should be noted that organisms exposed to (R)-MDPV showed a slight decrease in survival at 1.00 and 1.79 µg L‒1 when compared to the control. Conclusions: The present study demonstrated that chronic exposure to MDPV can impair D. magna reproduction, with (R)-MDPV causing adverse chronic effects at the tested concentrations, unlike the (S)-enantiomer and (R,S)-MDPV.
description: Scientific Letters, Vol. 1 No. Sup 1 (2024)
title: Historical Spawning Distribution And Origin Of Pelagic Juvenile Cod (Gadus Morhua) In Icelandic Waters
Creators: name: Begg, G.A.
name: Marteinsdottir, G.
Publisher: name: ASC 1999
Year: 2024
Subjects: Fisheries and aquaculture

description: No abstracts are to be cited without prior reference to the author.Incongruity between the reconstructed spawning period of pelagic juvenile (0-group) cod (Gadus morhua) and the observed spawning period for adult cod on the main spawning grounds south of Iceland have indicated that large numbers of the surviving juvenile population may, in some years, originate from other smaller inshore spawning grounds located within fjords of the west, north and east coasts. We examine this hypothesis by using age/length and temperature/growth relationships, based on aging of 0-group cod from 1995 and 1997, to analyze historical demographic data from 0-group fish surveys (1970-1998) to determine the most likely spawning distribution and origin of pelagic juvenile cod. Data on life history characteristics m conjunction with temporal and spatial distribution of pelagic juvenile cod will be used to create new abundance indices representing the resident (inshore) vs. drifting (offshore) juvenile cod population components. Partitioning of the histoncal 0- group index into these population components at a finer geographic scale than has been used previously. and therr subsequent relationship with recruitment, will provide new information that can be used to estimate the relative contribution of the main spawning component vs. the smaller in-fjord spawning components towards variable recruitment levels in the Icelandic cod stock.
Problemas morales y epistémicos presentes en el fenómeno de la violencia obstétrica en Colombia : una aproximación filosófica
Creators: name: Hurtado Jiménez, Laura Camila
Publisher: name: Universidad Externado de Colombia
Year: 2024
Subjects: subject: Violencia - Aspectos sociales
subject: Obstetricia - Aspectos morales y éticos
subject: Mujeres - Colombia
subject: Violencia obstétrica
subject: Objetificación
subject: Injusticia epistémica
subject: Feminismo
subject: Fenomenología del cuerpo

description: El objetivo de esta investigación es evidenciar cuáles son los problemas epistémicos y morales presentes en el fenómeno de la Violencia Obstétrica. La investigación se divide en cuatro capítulos. En el primer capítulo se realiza un análisis histórico de la ciencia obstétrica para entenderla en el contexto biomédico occidental. Se revisan aspectos legales y normativos a nivel global, latinoamericano y colombiano. En el segundo capítulo se examina el daño moral derivado de la violencia obstétrica, centrándose en la objetificación y explorando una concepción fenomenológica del cuerpo para evitarla. Se destaca el método corpográfico para comprender el cuerpo como fenómeno viviente. El tercer capítulo aborda el daño epistémico presente en la violencia obstétrica, enfocándose en las injusticias hermenéuticas y testimoniales que sufren las mujeres. En el anexo, se concluye con un análisis basado en conversaciones con profesionales de la salud, de manera que sus perspectivas permiten enriquecer la comprensión del fenómeno de la violencia obstétrica en Colombia.
description: The purpose of this research is to show which are the epistemic and moral problems present in the phenomenon of Obstetric Violence. The research is divided into four chapters. In the first chapter, a historical analysis of obstetric science is made in order to understand it in the western biomedical context. Legal and regulatory aspects at the global, Latin American and Colombian levels are reviewed. The second chapter examines the moral harm derived from obstetric violence, focusing on objectification and exploring a phenomenological conception of the body to avoid it. The corpographic method for understanding the body as a living phenomenon is highlighted. The third chapter discusses the epistemic harm present in obstetric violence, focusing on the hermeneutic and testimonial injustices suffered by women. The annex concludes with an analysis based on conversations with health professionals, so that their perspectives can enrich the understanding of the phenomenon of obstetric violence in Colombia
Evidence on the relationship between airborne exposure to endocrine-disrupting chemicals among school-age children and asthma onset or exacerbation: a systematic review
Creators: name: Hatem, Georges
name: Faria, Ana Margarida
name: Bessa, Mariana Pinto
name: Teixeira, João Paulo
name: Costa, Carla
name: Madureira, Joana
Publisher: name: Scientific Letters
Year: 2024

description: Background: Evaluating airborne exposure to endocrine-disrupting chemicals (EDCs) in children is paramount, given their vulnerability, which can lead to enduring health impacts such as asthma-related outcomes [1]. Objective: This systematic review aims to identify existing scientific evidence assessing airborne exposure to EDCs among school-age children and asthma onset or exacerbation. Methods: This review adhered to the Preferred Reporting Items for Systematic Reviews and Meta-analysis (PRISMA) guidelines [2] and was registered with the International Prospective Register of Systematic Reviews (CRD42023466637). It was conducted in the PubMed, Web of Science, Scopus, and Cochrane Library databases from inception to November 1st, 2023. Studies focusing on children aged 5-18 years with at least one EDC compound examined in various matrices and investigating the relationship between EDC exposure and asthma onset or exacerbation were included. Exclusion criteria encompassed the use of animal or in vitro models, the absence of quantitative EDC exposure data, reviews, and studies unavailable in English. The risk of bias was assessed using the Newcastle Ottawa scale [3], and the studies’ characteristics were retrieved according to Rooney et al. [4]. Results: Overall, 63 studies were included, with the majority published in 2022 (n=8) and conducted in Asia (n=25). Most of them focused on asthma onset rather than its exacerbation (51 vs. 20), with urine (n=35) and blood (n=11) as the favored matrices. The most commonly investigated EDCs were, in descending order, phthalates, Polycyclic Aromatic Hydrocarbons (PAHs), heavy metals, bisphenols, organophosphates esters, triclosan, nitrogen peroxide, and parabens. Four studies had a high risk of bias in the selection domain, 8 in the comparability domain, and none in the outcome/exposure domain. Conclusions: Research primarily examined phthalates and PAHs, with limited attention on paraben and triclosan. Comprehensive studies with robust exposure assessment and asthma characterization are vital for understanding EDCs' impact on health, particularly the effects of EDC mixtures.
description: Scientific Letters, Vol. 1 No. Sup 1 (2024)
Room-temperature quantum emission from interface excitons in mixed-dimensional heterostructures
Creators: name: Fang, N.
name: Chang, Y. R.
name: Fujii, S.
name: Yamashita, D.
name: Maruyama, M.
name: Gao, Y.
name: Fong, C. F.
name: Kozawa, D.
name: Otsuka, K.
name: Nagashio, K.
name: Okada, S.
name: Kato, Y. K.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The development of van der Waals heterostructures has introduced unconventional phenomena that emerge at atomically precise interfaces. For example, interlayer excitons in two-dimensional transition metal dichalcogenides show intriguing optical properties at low temperatures. Here we report on room-temperature observation of interface excitons in mixed-dimensional heterostructures consisting of two-dimensional tungsten diselenide and one-dimensional carbon nanotubes. Bright emission peaks originating from the interface are identified, spanning a broad energy range within the telecommunication wavelengths. The effect of band alignment is investigated by systematically varying the nanotube bandgap, and we assign the new peaks to interface excitons as they only appear in type-II heterostructures. Room-temperature localization of low-energy interface excitons is indicated by extended lifetimes as well as small excitation saturation powers, and photon correlation measurements confirm single-photon emission. With mixed-dimensional van der Waals heterostructures where band alignment can be engineered, new opportunities for quantum photonics are envisioned.
description: 8 pages, 4 figures
Foliation, topology and nucleon charge profiles in hypersphere soliton model
Creators: name: Hong, Soon-Tae
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In the hypersphere soliton model (HSM), we study the geometrical inner structures and the ensuing charge distributions of the nucleons by exploiting the aspect of the HSM where the hypersphere soliton is described by an extended object possessing the parameter $λ$ $(0\leλ<\infty)$ which corresponds to the radial distance from the center of $S^{3}$ to the foliation leaves of the hypersphere soliton. To do this, we investigate the foliation and topology related with geometry on a hypersphere described by $(μ,θ,ϕ)$. Exploiting the so-called scanning algorithm we study geometrical relations between spherical shell foliation leave on a northern hemi-hypersphere $S^{3}_{+}$ and that on a flat equatorial solid sphere $E^{3}$ which contains the center of $S^{3}$. We then elucidate the physical meaning of $μ$ in $S^{3}$ of radius $λ$ by showing that $μ$ plays the role of an auxiliary angle to fix the radius $λ\sinμ$ of the $S^{2}$ spherical shell sharing the center of $S^{3}(=S^{2}\times S^{1})$, at a given angle $μ$. Next, using the charge density profiles of nucleons with $μ$ dependence, we construct the nucleon fractional charges of spherically symmetric and nontrivial distributions. In the HSM we note that the proton and neutron charges do not leak out from the hypersphere soliton, and the positive and negative charges in the neutron are confined inside and outside its core, respectively. Explicitly we predict the fractional volumes and charges of the neutron. The proton and neutron are shown to be described by a topological structure of two Hopf-linked Möbius strip type twist circles in $S^{3}$. We also note that the characteristic ratio of the hypersphere volume to the corresponding solid sphere one is given by a geometrical invariant related with hyper-compactness.
description: 15 pages, 3 figures, some modifications and corrections
Cheilosia canicularis
Creators: name: Kočić, Anja
name: Vujić, Ante
name: Tot, Tamara
name: Milosavljević, Marina Janković
name: Groot, Maarten De
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Syrphidae
Cheilosia
Cheilosia canicularis

description: Cheilosia canicularis (Panzer, 1801).
Regions: UC, GO, SS, CA, CL, LC, SA.
Reference: Coe (1960), Vujić (1996), Vujić & Šikoparija (2001), de Groot (2004), de Groot & Govedič (2008).
description: Published as part of Kočić, Anja, Vujić, Ante, Tot, Tamara, Milosavljević, Marina Janković & Groot, Maarten De, 2023, An updated checklist of the hoverflies (Diptera: Syrphidae) of Slovenia, pp. 189-227 in Zootaxa 5297 (2) on page 195, DOI: 10.11646/zootaxa.5297.2.2, http://zenodo.org/record/7993180
Exploring the swimming behavior of Daphnia magna exposed to a mixture of five psychoactive substances – preliminary data
Creators: name: Pereira, Ana Sofia
name: Carvalho, Ana Rita
name: Couto, Cristina
name: Carrola, João Soares
name: Castro, Bruno
name: Ribeiro, Cláudia
Publisher: name: Scientific Letters
Year: 2024

description: Background: Psychoactive substances (PAS) are commonly found in freshwater ecosystems increasing concern about the potential negative impacts on non-target organisms, such as aquatic invertebrates [1]. Indeed, the environmental occurrence of amphetamine (AMP), and recreative drugs as 3,4-methylenedioxymethamphetamine (MDMA), 3,4-methylenedioxyamphetamine (MDA), and synthetic cathinones as butylone (BTL) and 3,4-dimethylmethcathionone (3,4-DMMC) has been reported in aquatic ecosystems and wastewaters ranging from ng/L to µg/L. Recent studies have revealed diverse adverse effects of single PAS exposure to aquatic organisms, like Daphnia magna [2, 3] however, these substances occur in the environment as complex drug mixtures which may lead to unforeseen toxicity impacts and/or induce different final adverse effects than single PAS exposure. Objective: This work aimed to assess the potential effects on swimming behavior induced by mixtures of PAS on the aquatic organism D. magna.  Methods: Neonates from the third/fourth brood of D. magna, less than 24 hours old, were exposed to two levels, 0.1 and 1.0 µg/L, of a selected mixture of 5 PAS, namely MDA, MDMA, AMP, BTL and 3,4-DMMC, for 7 and 14 days. Exposure concentrations and control were conducted with 5 replicates each containing 20 organisms. On days 7 and 14, swimming behavior endpoints as active time, total distance and swimming speed were determined. Results: No significant changes were observed in the swimming behavior parameters such as active time, total distance and speed on the organisms exposed to both concentrations of the PAS mixture after 7 or 14 days. Conclusions: Although previous studies have shown significant changes in swimming behavior, morphophysiological and biochemical parameters on D. magna exposed to single exposure of these PAS [2,3], the exposure to this selected mixture in the same range of concentrations, 0.1 and 1.0 µg/L, did not cause changes on swimming behavior even after prolonged exposure, i.e., 14 days, including for the higher level tested. Additional parameters such as oxidative stress and antioxidant enzymes levels are ongoing to better understand the global effects of this combined PAS exposure.
description: Scientific Letters, Vol. 1 No. Sup 1 (2024)
title: Short Term Changes In A Cod Larval Patch West Of Iceland 1997
Creators: name: Thorisson, Konrad
name: Asgeirsson, Thor H.
Publisher: name: ASC 1999
Year: 2024
Subjects: Fisheries and aquaculture

description: No abstracts are to be cited without prior reference to the author.A large patch of cod larvae was sampled twice during late June - early July 1997. The interval between sampling dates was one week. A part of the patch remained unsampled on both occations and thus, planned mortality estimates were not realised. Rough estimates of the total number in the patch (6 * 1010) suggests that a great deal of mortality took place after the last survey (average length 12 mm SL). Cirripedia nauplii which dominated the zooplankton samples were unimportant in the cod stomachs. Copepod eggs are the most common food items up to 12 or even 16 mm length. Copepods dominate the food in most length groups above 12 mm and the availability oflarger copepods (in this case the larger stages of Ca/anus finmarchicus) may largely determine the feeding conditions of the early juveniles.
Constraints on the origins of the Galactic neutrino flux
Creators: name: Desai, Abhishek
name: Vandenbroucke, Justin
name: Anandagoda, Samalka
name: Thwaites, Jessie
name: Romfoe, M. J.
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Galactic and extragalactic objects in the universe are sources of high-energy neutrinos {that may contribute to the astrophysical neutrino signal seen by IceCube.} Recently, a study done using cascade-like events seen by IceCube reported neutrino emission from the Galactic plane with $>$4$σ$ significance. In this work, we put a lower limit on the number of Galactic sources required to explain this emission. To achieve this, we {use} a simulation package created to simulate point sources in the Galaxy along with the neutrino and gamma-ray flux emissions originating from them. Along with {using} past IceCube discovery potential curves, we also account for Eddington bias effects due to Poisson fluctuations in the number of detected neutrino events.{We present a toy Monte Carlo simulation to show that there should be at least 8 sources, each with luminosities $1.6 \times 10^{35}$erg/s responsible for the Galactic neutrino emission. } Our results constrain the number of individual point-like emission regions, which applies both to discrete astrophysical sources and to individual points of diffuse emission.
description: Published in The Astrophysical Journal
Cheilosia carbonaria Egger 1860
Creators: name: Kočić, Anja
name: Vujić, Ante
name: Tot, Tamara
name: Milosavljević, Marina Janković
name: Groot, Maarten De
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Syrphidae
Cheilosia
Cheilosia carbonaria

description: Cheilosia carbonaria Egger, 1860.
Regions: UC, GO, CL, LC, SA.
Reference: Coe (1960), Vujić (1996), de Groot (2004), de Groot & Govedič (2008), Van Steenis et al. (2013).
description: Published as part of Kočić, Anja, Vujić, Ante, Tot, Tamara, Milosavljević, Marina Janković & Groot, Maarten De, 2023, An updated checklist of the hoverflies (Diptera: Syrphidae) of Slovenia, pp. 189-227 in Zootaxa 5297 (2) on page 195, DOI: 10.11646/zootaxa.5297.2.2, http://zenodo.org/record/7993180
XRLoc: Accurate UWB Localization to Realize XR Deployments
Creators: name: Arun, Aditya
name: Saruwatari, Shunsuke
name: Shah, Sureel
name: Bharadia, Dinesh
Publisher: name: arXiv
Year: 2023
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: Networking and Internet Architecture (cs.NI)
subject: Robotics (cs.RO)
subject: Signal Processing (eess.SP)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Understanding the location of ultra-wideband (UWB) tag-attached objects and people in the real world is vital to enabling a smooth cyber-physical transition. However, most UWB localization systems today require multiple anchors in the environment, which can be very cumbersome to set up. In this work, we develop XRLoc, providing an accuracy of a few centimeters in many real-world scenarios. This paper will delineate the key ideas which allow us to overcome the fundamental restrictions that plague a single anchor point from localization of a device to within an error of a few centimeters. We deploy a VR chess game using everyday objects as a demo and find that our system achieves $2.4$ cm median accuracy and $5.3$ cm $90^\mathrm{th}$ percentile accuracy in dynamic scenarios, performing at least $8\times$ better than state-of-art localization systems. Additionally, we implement a MAC protocol to furnish these locations for over $10$ tags at update rates of $100$ Hz, with a localization latency of $\sim 1$ ms.
description: This paper is accepted by ACM SenSys 2023. The published version is https://doi.org/10.1145/3625687.3625810 in ACM Digital Library
Cuidado de sí y cotidianidad en los estudiantes universitarios de la facultad de ciencias sociales y humanas y de la facultad de estudios del patrimonio cultural de la Universidad Externado de Colombia en el marco de la pandemia Covid-19
Creators: name: Bohórquez Rodríguez, David Mateo
Publisher: name: Universidad Externado de Colombia
Year: 2023
Subjects: subject: Adaptación social
subject: Jovenes - Vida social y costumbres
subject: Vida cotidiana - Aspectos sociales
subject: Cuidado de sí
subject: Cotidianidad
subject: Pandemia
subject: Covid-19
subject: Estudiantes universitarios

description: La sorpresiva propagación de la pandemia Covid-19 causó una emergencia sanitaria a nivel mundial que generó una ruptura a nuestra certidumbre social. Cada uno de los hábitos que teníamos consolidados se volcaron hacia la necesidad de confrontar el fenómeno pandémico. El objetivo principal de esta investigación fue develar, a propósito de la pandemia Covid-19, la experiencia y los significados de la población estudiantil universitaria activa durante esta etapa (2020-2021), de las percepciones de vida cotidiana y cuidado de sí. El plan metodológico tuvo dos fases: Una cuantitativa, encuestas, y una cualitativa, entrevistas. Entre los resultados se informa que durante la pandemia los estudiantes tuvieron altos niveles de distracción durante las clases y reemplazaron la necesidad de no salir con las pantallas para acceder a algún tipo de entretenimiento. Sin embargo, también demostraron que hubo una mayor aproximación a sus familiares y seres cercanos, sintiéndose menos confiados por sus estados de salud y aprovechando más el tiempo que tuvieron con ellos. La investigación sugiere seguir explorando el fenómeno de la cotidianidad y el cuidado para abastecer de sentido las prácticas individuales y colectivas de las personas e identificar en futuras crisis diversas formas en las que se puede abordar el problema.
description: The unexpected arrive of the Covid-19 pandemic caused a global emergency sanitation that origin a rupture in our social certitude. Every habit turns into the requirement of fighting back the pandemic phenomenon. The main objective of this investigation was reveal, regarding the Covid-19 pandemic, the experience and the meanings of the active student population during this period (2020-2021), the perceptions of everyday life and care of the self. The methodological plan had two phases: The quantitative, surveys, and the qualitative, interviews. Some of the results show that, during the pandemic, the students were more distracted in classes, especially because of the screens (cellphones, TV, videogames) that they used to replace the difficulties caused for lockdown and social distancing. Regardless, the students were closer to their families and around people, feeling less confident about their health and leverage the time with. The investigation suggests that we must continue exploring everyday life and wellbeing to improve the individual and collective practices of the people and, in possible future crisis, identify the diversity of ways to explore the problem.
Reconstruction of Unstable Heavy Particles Using Deep Symmetry-Preserving Attention Networks
Creators: name: Fenton, Michael James
name: Shmakov, Alexander
name: Okawa, Hideki
name: Li, Yuji
name: Hsiao, Ko-Yang
name: Hsu, Shih-Chieh
name: Whiteson, Daniel
name: Baldi, Pierre
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: Machine Learning (cs.LG)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Reconstructing unstable heavy particles requires sophisticated techniques to sift through the large number of possible permutations for assignment of detector objects to the underlying partons. Anapproach based on a generalized attention mechanism, symmetry preserving attention networks (SPA-NET), has been previously applied to top quark pair decays at the Large Hadron Collider which produce only hadronic jets. Here we extend the SPA-NET architecture to consider multiple input object types, such as leptons, as well as global event features, such as the missing transverse momentum. Inaddition, we provide regression and classification outputs to supplement the parton assignment. We explore the performance of the extended capability of SPA-NET in the context of semi-leptonic decays of top quark pairs as well as top quark pairs produced in association with a Higgs boson. We find significant improvements in the power of three representative studies: a search for ttH, a measurement of the top quark mass, and a search for a heavy Z' decaying to top quark pairs. We present ablation studies to provide insight on what the network has learned in each case.
description: Accepted by Nature Communications Physics, replaced with published version
title: Harvesting A Size-Structured Ecosystem
Creators: name: Duplisea, Daniel E.
name: Bravington, Mark V.
Publisher: name: ASC 1999
Year: 2024
Subjects: Ecosystem observation, processes and dynamics
Pressures, impacts, conservation, and management

description: No abstracts are to be cited without prior reference to the author.Strategic decisions about fishing policy should entail multispecies considerations, and reliable management needs to be based on results that are robust to model uncertainty. Therefore, we considered two dynamic size-based models of hypothetical fish communities: (1) bottom-up, based on individual species (2) top-down, based on an aggregated community. The bottom-up model is a length-based version of Multispecies Virtual Population Analysis (MSVP A) where numbers of individuals in length-cohorts are tracked and species interactions are mediated by predation mortality. The top-down model is an energy flow model derived from biomass size spectrum theory which considers flow of energy through the aggregated community without regard to species. The effect of optimal size-based harvesting strategies on community properties such as stability and persistence of size-spectra, are compared between the two models. By comparing model results, we can identify which properties are robust to model uncertainty, and the processes, of which we lmow little, that can strongly affect results. These types of conclusions are needed both to direct further research and define the limits of management advice which can be derived from the models.
Solubility and Partition of Indium Solute Between Sublattices in the Cubic Laves Phase GdAl2
Creators: name: Olsen, Windy Lin
Publisher: name: Washington State University
Year: 2023
Subjects: dopant
inter-metallic
Perturbed angular correlation
phase boundaries
rare earth aluminde
site preference
Nuclear physics and radiation

description: Perturbed angular correlation of gamma rays (PAC) was used for studying the solution of In atoms in the intermetallic compound GdAl2 for solute mole-fractions between 10-11 and 10-2. Measurements showed the phase boundaries of the solute-free GdAl2 to be 33.1(2) and 34.1(1) at.% Gd at a temperature of order K. In previous work, equilibrium measurements determined that the enthalpy of transfer of indium solute from the Gd-sublattice to the Al-sublattice was 0.34 eV. It is now shown that the transfer enthalpy is constant over the entire phase field, which was a surprise given that the field spans both sides of the stoichiometric composition and intrinsic defects differ on the two sides. These phase boundaries agree well with those found in a phase diagram in the literature. Mole fractions of natural In ranging from 0.05 – 2 at.% In were dissolved into GdAl2 in addition to extremely dilute 111In probes used in the PAC measurements. A linear decrease from 0.34 eV was observed in transfer enthalpy as the solute mole fraction increased, reaching 0 eV for 1.4(2) at.% In. The latter value is identified as the solubility limit for In in GdAl2 near 873 K. A thermodynamic model was developed that reproduces the decrease in transfer enthalpy. In effect, it is found that the transfer enthalpy decreased as the added solute eventually filled all lattice sites available to them, after which the solute atoms can no longer transfer. The transfer is effectively “jammed”. A novel Gd-Al-In ternary phase diagram is proposed on the basis of these measurements that shows the dominant point defects in three regimes of the single-phase field: Gd-poor, Gd-rich, and In-doped.
Gain-compensated metal cavity modes and a million-fold improvement of Purcell factors
Creators: name: VanDrunen, Becca
name: Ren, Juanjuan
name: Franke, Sebastian
name: Hughes, Stephen
Publisher: name: arXiv
Year: 2023
Subjects: subject: Optics (physics.optics)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Using a rigorous mode theory for gain-compensated plasmonic dimers, we demonstrate how quality factors and Purcell factors can be dramatically increased, improving the quality factors from 10 to over 26,000 and the peak Purcell factors from around 3000 to over 10 billion. Full three-dimensional calculations are presented for gold dimers in a finite-size gain medium, which allows one to easily surpass fundamental Purcell factor limits of lossy media. Within a regime of linear system response, we show how the Purcell factors are modified from the contributions from the projected local density of states as well as a non-local gain. Further, we show that the effective mode volume and radiative beta factors remain relatively constant, despite the significant enhancement of the Purcell factors.
title: On The Possible Relation Of The Cod Peak Spawning Timing With The Environmental Conditions In The Gdansk Deep Of The Baltic Sea
Creators: name: Karasiova, E.
Publisher: name: ASC 1999
Year: 2024
Subjects: Fisheries and aquaculture

description: No abstracts are to be cited without prior reference to the author.Based on ichthyoplankton data the seasonal dynamics of cod spawning in the Gdansk Deep of the Baltic were considered for years with the high ( 1946-1951) and the low (1996-1998) cod stock. The different timings of the most intensive spawning were revealed: 1) the early peak spawning timing (April, May) in 1948 and 1949; 2) the late peak (July, August) in 1946, 194 7 and 1996; 3) the absence of the pronounced peak in 19 51, 1997 and 1998. The possible influence of the environmental conditions on the cod peak spawning timing was discussed.