cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Spherically symmetric black holes in minimally modified self-dual gravity
Creators: name: Ishibashi, Akihiro
name: Speziale, Simone
Publisher: name: arXiv
Year: 2009
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We discuss spherically symmetric black holes in the modified self-dual theory of gravity recently studied by Krasnov, obtained adding a Weyl-curvature dependent `cosmological term' to the Plebanski lagrangian for general relativity. This type of modified gravity admits two different types of singularities: one is a true singularity for the theory where the fundamental fields of the theory, as well as the (auxiliary) spacetime metric, become singular, and the other one is a milder "non-metric singularity" where the metric description of the spacetime breaks down but the fundamental fields themselves are regular. We first generalise this modified self-dual gravity to include Maxwell's field and then study basic features of spherically symmetric, charged black holes, with particular focus on whether these two types of singularities are hidden or naked. We restrict our attention to minimal forms of the modification, and find that the theory exhibits `screening' effects of the electric charge (or `anti-screening', depending upon the sign of the modification term), in the sense that it leads to the possibility of charging the black hole more (or less) than it would be possible in general relativity without exposing a naked singularity. We also find that for any (even arbitrarily large) value of charge, true singularities of the theory appear to be either achronal (non-timelike) covered by the hypersurface of a harmless non-metric singularity, or simply hidden inside at least one Killing horizon.
description: 42 pages, many colour figures. v2: discussion of the conformal ambiguity improved, references added. v3: amended to match published version
A multifrequency study of possible relic lobes in giant radio sources
Creators: name: Godambe, Sagar
name: Konar, C.
name: Saikia, D. J.
name: Wiita, P. J.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present low-frequency observations with the Giant Metrewave Radio Telescope (GMRT) of three giant radio sources (GRSs, J0139+3957, J0200+4049 and J0807+7400) with relaxed diffuse lobes which show no hotspots and no evidence of jets. The largest of these three, J0200+4049, exhibits a depression in the centre of the western lobe, while J0139+3957 and J0807+7400 have been suggested earlier by Klein et al. and Lara et al. respectively to be relic radio sources. We estimate the ages of the lobes. We also present Very Large Array (VLA) observations of the core of J0807+7400, and determine the core radio spectra for all three sources. Although the radio cores suggest that the sources are currently active, we explore the possibility that the lobes in these sources are due to an earlier cycle of activity.
description: 10 pages, 7 tables, 9 figures, accepted for publication in MNRAS
Approximating strongly correlated spin and fermion wavefunctions with correlator product states
Creators: name: Changlani, Hitesh J.
name: Kinder, Jesse M.
name: Umrigar, Cyrus J.
name: Chan, Garnet Kin-Lic
Publisher: name: arXiv
Year: 2009
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We explore correlator product states for the approximation of correlated wavefunctions in arbitrary dimensions. We show that they encompass many interesting states including Laughlin's quantum Hall wavefunction, Huse and Elser's frustrated spin states, and Kitaev's toric code. We further establish their relation to common families of variational wavefunctions, such as matrix and tensor product states and resonating valence bond states. Calculations on the Heisenberg and spinless Hubbard models show that correlator product states capture both two-dimensional correlations (independent of system width) as well as non-trivial fermionic correlations (without sign problems). In one-dimensional simulations, correlator product states appear competitive with matrix product states with a comparable number of variational parameters, suggesting they may eventually provide a route to practically generalise the density matrix renormalisation group to higher dimensions.
description: Table 1 expanded, Table 2 updated, optimization method discussed, discussions expanded in some sections, earlier work on similar wavefunctions included in text and references, see also (arXiv:0905.3898). 5 pages, 1 figure, 2 tables, submitted to Phys. Rev. B
Skelosophusa prolixa Ng and Takeda 1994
Creators: name: Cumberlidge, Neil
name: Meyer, Kristin
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Malacostraca
Decapoda
Potamonautidae
Skelosophusa
Skelosophusa prolixa

description: Remarks on Skelosophusa prolixa Ng and Takeda, 1994 (Fig. 4) The first author discovered five specimens from northern Madagascar in the unidentified collection of the NHM (NHM 2009.119, NHM 2009.120 -121, NHM 2009.122, NHM 2009.123, NHM 2009.124) that proved to belong to Skelosophusa prolixa. All of these specimens were collected from Riviére Cave, Cañon Forestier, Ankarana, 60 km south of Diego Suarez, northern Madagascar, 8 August-27 September 1986, by N. W. Lear and S. U. Fowler. Although the locality is similar to that reported for the holotype, it may be possible that these specimens are topotypic, and were collected at the same time as the original type series. However, it is difficult to be certain of this because the date of collection and the names of the collectors were not supplied in the original description (Ng and Takeda, 1994). Skelosophusa prolixa was previously known only from two specimens collected from this same locality. Th e holotype described by Ng and Takeda (1994) has a CW of 25.6 mm and CL of 18.8 mm; these two measurements give a cw/cl ratio of 1.3 (compared to 1.4 for the present specimens). This species possesses a number of adaptations (e.g. normal length eyestalks but with reduced corneas, lack of pigmentation of the carapace and legs, and extremely long ambulatory legs, p2-p5) typical of true cave-adapted species of freshwater crabs (Ng and Takeda, 1994). Th e adult male specimen among the new material photographed here (Fig. 4 A–D) (CW 29.3 mm) is larger than the holotype male (CW 25.6 mm) and shows characters of the cheliped that have not previously been described. For example, the immovable finger of the major cheliped of S. prolixa has one large, fused molar tooth in adults, whereas that of the holotype male, a smaller specimen, has only small teeth (Ng and Takeda, 1994).
description: Published as part of Cumberlidge, Neil & Meyer, Kristin, 2009, A new species of Foza Reed & Cumberlidge, 2006 from northern Madagascar (Decapoda, Brachyura, Potamoidea, Potamonautidae), with a redescription of F. goudoti (H. Milne Edwards, 1853) comb. n., and comments on Skelosophusa prolixa Ng & Takeda, 1994, pp. 77-89 in ZooKeys 18 (18) on page 87, DOI: 10.3897/zookeys.18.102, http://zenodo.org/record/576496
description: {"references": ["Ng PKL, Takeda M (1994) Skelosophusa (Crustacea, Decapoda, Brachyura), a new genus of potamonautid freshwater crab from Madagascar, with descriptions of two new species. Bulletin of the National Science Museum, Series A (Zoology) 20 (4): 161 - 172."]}
Is morphological processing mediated by orthographic consistency or morphological complexity?
Creators: name: Beyersmann, Elisabeth
name: MISS Elisabetta De Simone
name: Moll, Kristina
Publisher: name: Open Science Framework
Year: 2023
Subjects: subject: Social and Behavioral Sciences
subject: Psycholinguistics and Neurolinguistics
subject: Linguistics
subject: FOS: Languages and literature

description: This study investigates cross-linguistic differences in morphological processing and asks whether complex word recognition is modulated by cross-linguistic differences in orthographic transparency and/or morphological productivity . To address this question, we will employ a lexical decision task in English and Italian, two languages that differ in their orthographic transparency (Italian is orthographically more transparent than English) and morphological productivity (Italian is morphologically richer than English).
המחקר של איתמר, מיכאל ועמית - השפעות פיטספריישן ומודעות אליהן
Creators: name: Tzafri, Amit
name: TAU Experimental Psychology Team
name: Nestrenko, Michael
Publisher: name: Open Science Framework
Year: 2023
Subjects: subject: Social and Behavioral Sciences
subject: Psychology
subject: FOS: Psychology

description: זוהי ההרשמה מראש למחקר שלנו במסגרת קורס פסיכולוגיה ניסויית
Compensation strategies for a lip-tube perturbation of French [u]: an acoustic and perceptual study of 4-year-old children
Creators: name: Ménard, Lucie
name: Perrier, Pascal
name: Aubin, Jérôme
name: Savariaux, Christophe
name: Thibeault, Mélanie
Publisher: name: arXiv
Year: 2008
Subjects: subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: The relations between production and perception in 4-year-old children were examined in a study of compensation strategies for a lip-tube perturbation. Acoustic and perceptual analyses of the rounded vowel [u] produced by twelve 4-year-old French speakers were conducted under two conditions: normal and with a 15-mm-diameter tube inserted between the lips. Recordings of isolated vowels were made in the normal condition before any perturbation (N1), immediately upon insertion of the tube and for the next 19 trials in this perturbed condition, with (P2) or without articulatory instructions (P1), and in the normal condition after the perturbed trials (N2). The results of the acoustic analyses reveal speaker-dependent alterations of F1, F2, and/or F0 in the perturbed conditions and after the removal of the tube. For some subjects, the presence of the tube resulted in very little change; for others, an increase in F2 was observed in P1, which was generally reduced in some of the 20 repetitions, but not systematically and not continuously. The use of articulatory instructions provided in the P2 condition was detrimental to the achievement of a good acoustic target. Perceptual data are used to determine optimal combinations of F0, F1, and F2 (in Bark) related to these patterns. The data are compared to a previous study conducted with adults [Savariaux et al., J. Acoust. Soc. Am. 106, 381-393 (1999)].
description: 15 pages
Spatial behaviour in Victory Square : the social geography of an inner-city park
Creators: name: Hall, Wayne Robert
Publisher: name: University of British Columbia
Year: 2010

description: This report is the result of an empirical investigation of everyday life in Victory Square, Vancouver, British Columbia. Three months of intensive, scheduled observation and participant observation were planned in order to investigate the hypothesis that there was a regular and meaningful organization, both spatially and socially, to the use and control of park space. The exploration was guided theoretically and methodologically by the research of human spatial behaviour at other spatial scales, from the indoor built environment to the scale of urban communities. Both systematically retrieved demographic statistics and spatial habits of park users, and more subjective anecdotal accounts of people's perceptions and specific behavioural episodes were gathered. This provided a well rounded statistical and phenomenological data bank from which to generalize. An instrument for objective assessment and classification of park users as to life style affiliation, a systematic schedule of information retrieval, and a 'behavioural map' on which to record unobtrusively derived data were central to a research strategy that did not impinge upon the natural, real life setting. The park was found to host a number of socially marginal life style groups who, as powerless outcasts of wider affluent society, coexisted, as a separate social world, in social and spatial harmony. Through the behavioural processes of tolerance, non-involvement, and passive readjustment, a parochial moral order existed which was demonstrated in rituals of interaction and collective patterns of spatial dominance. This socio-spatial order accorded incompatible life style groups a means of peaceful coexistence in a place of limited space and resources. Spatial behaviour in micro-scale outdoor public space has not previously been intensively investigated. This exploration, as a case study of one such environment, supports the hypothesis that, at all levels of social encounter, and at all spatial scales, available space is organized, used and controlled in a regular, ordered, and meaningful way to accommodate and integrate the social gatherings it hosts.
New searches for HI 21-cm in damped Lyman-alpha absorption systems
Creators: name: Curran, S. J.
name: Tzanavaris, P.
name: Darling, J. K.
name: Whiting, M. T.
name: Bignell, J. K. Webb C.
name: Athreya, R.
name: Murphy, M. T.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present the results of three separate searches for HI 21-cm absorption in a total of twelve damped Lyman-alpha absorption systems (DLAs) and sub-DLAs over the redshift range z = 0.86-3.37. We find no absorption in the five systems for which we obtain reasonable sensitivities and add the results to those of other recent surveys in order to investigate factors which could have an effect on the detection rate: We provide evidence that the mix of spin temperature/covering factor ratios seen at low redshift may also exist at high redshift, with a correlation between the 21-cm line strength and the total neutral hydrogen column density, indicating a roughly constant spin temperature/covering factor ratio for all of the DLAs searched. Also, by considering the geometry of a flat expanding Universe together with the projected sizes of the background radio emission regions, we find, for the detections, that the 21-cm line strength is correlated with the size of the absorber. For the non-detections it is apparent that larger absorbers (covering factors) are required in order to exhibit 21-cm absorption, particularly if these DLAs do not arise in spiral galaxies. We also suggest that the recent z = 2.3 detection towards TXS 0311+430 arises in a spiral galaxy, but on the basis of a large absorption cross-section and high metallicity, rather than a low spin temperature
description: 11 pages, accepted by MNRAS
Zinza Bradley 1995, n.gen.
Creators: name: Sinclair, Bradley J.
name: McAlpine, David K.
Publisher: name: Zenodo
Year: 1995
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Heleomyzidae
Zinza

description: Zinza n.gen. Type species. Zinza grandis n.sp. Description. Large flies, with most of the general characters of the Rhinotorini (D. McAlpine, 1985). Head (Fig. 1) moderately excavated on vertex, ocelli thus not visible in profile; posterior ocelli much closer to each other than to anterior ocellus; ocellar bristles closely approximated, inserted posteriorly to anterior ocellus; vibrissa and 2-3 closely placed peristomial bristles distinct but small; central cheek bristle absent; hypofacial short and narrow. Arista long-plumose beyond basal fifth. Palpus short and compressed.
description: Published as part of Sinclair, Bradley J. & McAlpine, David K., 1995, Zinza, a New Genus of Rhinotorine Flies from Northern Queensland, Australia (Diptera: Heleomyzidae), pp. 225-230 in Records of the Australian Museum 47 (3) on page 225, DOI: 10.3853/j.0067-1975.47.1995.238, http://zenodo.org/record/4660701
description: {"references": ["McAlpine, D. K., 1985. The Australian genera of Heleomyzidae (Diptera: Schizophora) and a reclassification of the family into tribes. Records of the Australian Museum 36: 203 - 251."]}
Electronic structure of confined carbyne from joint wavelength-dependent resonant Raman spectroscopy and density functional theory investigations
Creators: name: Martinati, Miles
name: Wenseleers, Wim
name: Shi, Lei
name: Pratik, Saied Md
name: Rohringer, Philip
name: Cui, Weili
name: Pichler, Thomas
name: Coropceanu, Veaceslav
name: Brédas, Jean-Luc
name: Cambré, Sofie
Publisher: name: arXiv
Year: 2021
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Carbyne, i.e. an infinitely long linear carbon chain (LCC), has been at the focus of a lot of research for quite a while, yet its optical, electronic, and vibrational properties have only recently started to become accessible experimentally thanks to its synthesis inside carbon nanotubes (CNTs). While the role of the host CNT in determining the optical gap of the LCCs has been studied previously, little is known about the excited states of such ultralong LCCs. In this work, we employ the selectivity of wavelength-dependent resonant Raman spectroscopy to investigate the excited states of ultralong LCCs encapsulated inside double-walled CNTs. In addition to the optical gap, the Raman resonance profile shows three additional resonances. Corroborated with DFT calculations on LCCs with up to 100 C-atoms, we assign these resonances to a vibronic series of a different electronic state. Indeed, the calculations predict the existence of two optically allowed electronic states separated by an energy of 0.14-0.22 eV in the limit of an infinite chain, in agreement with the experimental results. Furthermore, among these two states, the one with highest energy is also characterized by the largest electron-vibration couplings, which explains the corresponding vibronic series of overtones.
Whispering-gallery and Luneburg-lens effects in a beam-fed circularly-layered dielectric cylinder
Creators: name: Boriskin, A. V.
name: Nosich, A. I.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Optics (physics.optics)
subject: Classical Physics (physics.class-ph)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: The whispering-gallery mode (WGM) excitation and Luneburg lens (LL) effect are studied for a lossy circularly-layered dielectric cylinder illuminated by a beam field. The latter is simulated by the Complex Source-Point (CSP) beam. Exact series solution to the wave scattering problem is used to obtain the far-field patterns and directivity. The WG mode effect is shown to undermine the LL performance. Index Terms: Layered circular dielectric cylinder, Complex source point beam, Whispering-gallery modes, Luneburg lens.
description: 5 pages, 7 figures
Automatic recognition of parasitic products in stool examination using object detection approach
Creators: name: Naing, Kaung Myat
name: Boonsang, Siridech
name: Chuwongin, Santhad
name: Kittichai, Veerayuth
name: Tongloy, Teerawat
name: Prommongkol, Samrerng
name: Dekumyoy, Paron
name: Watthanakulpanich, Dorn
Publisher: name: figshare
Year: 2022
Subjects: Parasitology
Computational Biology

description: Abstract:
Object detection is a new artificial intelligence approach to morphological recognition and labeling parasitic pathogens. In comparison to the YOLOv3 and YOLOv3-Tiny models, this study aimed to propose an automated object detection approach, specifically the YOLOv4-Tiny model, for automatic recognition of intestinal parasitic products in stools. To identify protozoan cysts and helminthic eggs in human feces, the three You Only Look Once (YOLO) approaches; YOLOv4-Tiny, YOLOv3, and YOLOv3-Tiny, were trained to recognize 34 intestinal parasitic classes using training of image dataset. Feces were processed using a modified direct smear method adapted from the simple direct smear and the modified Kato Katz methods. The image dataset was collected from intestinal parasitic objects discovered during stool examination and the three YOLO models were trained to recognize the image datasets. The non-maximum suppression technique and the threshold level were used to analyze the test dataset, yielding results of 96.25% precision and 95.08% sensitivity for YOLOv4-Tiny. Additionally, the YOLOv4-Tiny model had the best AUPRC performance of the three YOLO models, with a score of 0.963. This study, to our knowledge, was the first to detect protozoan cysts and helminthic eggs in the 34 classes of intestinal parasitic objects in human stools.
Automatic recognition of parasitic products in stool examination using object detection approach
Creators: name: Naing, Kaung Myat
Publisher: name: figshare
Year: 2022
Subjects: Parasitology
Computational Biology

description: Abstract:
Object detection is a new artificial intelligence approach to morphological recognition and labeling parasitic pathogens. In comparison to the YOLOv3 and YOLOv3-Tiny models, this study aimed to propose an automated object detection approach, specifically the YOLOv4-Tiny model, for automatic recognition of intestinal parasitic products in stools. To identify protozoan cysts and helminthic eggs in human feces, the three You Only Look Once (YOLO) approaches; YOLOv4-Tiny, YOLOv3, and YOLOv3-Tiny, were trained to recognize 34 intestinal parasitic classes using training of image dataset. Feces were processed using a modified direct smear method adapted from the simple direct smear and the modified Kato Katz methods. The image dataset was collected from intestinal parasitic objects discovered during stool examination and the three YOLO models were trained to recognize the image datasets. The non-maximum suppression technique and the threshold level were used to analyze the test dataset, yielding results of 96.25% precision and 95.08% sensitivity for YOLOv4-Tiny. Additionally, the YOLOv4-Tiny model had the best AUPRC performance of the three YOLO models, with a score of 0.963. This study, to our knowledge, was the first to detect protozoan cysts and helminthic eggs in the 34 classes of intestinal parasitic objects in human stools.
Electroweak Chiral Lagrangian for a Hypercharge-universal Topcolor Model
Creators: name: Lang, Jun-Yi
name: Jiang, Shao-Zhou
name: Wang, Qing
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Electroweak chiral Lagrangian for a hypercharge-universal topcolor model is investigated. We find that the assignments of universal hypercharge improve the results obtained previously from K.Lane's prototype natural TC2 model by allowing a larger Z' mass resulting in a very small T parameter and the S parameter is still around the order of +1
description: 12 pages, 7 figures
海洋贝莱斯芽孢杆菌Bam-6全基因组测序及生物信息分析
Creators: name: 王金昌(Wang Jinchang)
Publisher: name: CNGB
Year: 2023
Subjects: Genome sequencing
Monoisolate

description: 海洋贝莱斯芽孢杆菌Bam-6全基因组测序及生物信息分析
Startup Ecosystem Rankings
Creators: name: Makai, Attila Lajos
Publisher: name: arXiv
Year: 2021
Subjects: subject: Digital Libraries (cs.DL)
subject: General Economics (econ.GN)
subject: FOS: Computer and information sciences
subject: FOS: Economics and business

description: The number, importance, and popularity of rankings measuring innovation performance and the strength and resources of ecosystems that provide its spatial framework are on an increasing trend globally. In addition to influencing the specific decisions taken by economic actors, these rankings significantly impact the development of innovation-related policies at regional, national, and international levels. The importance of startup ecosystems is proven by the growing scientific interest, which is demonstrated by the increasing number of related scientific articles. The concept of the startup ecosystem is a relatively new category, the application of which in everyday and scientific life has been gaining ground since the end of the 2000s. In parallel, of course, the demand for measurability and comparability has emerged among decision-makers and scholars. This demand is met by startup ecosystem rankings, which now measure and rank the performance of individual ecosystems on a continental and global scale. However, while the number of scientific publications examining rankings related to higher education, economic performance, or even innovation, can be measured in the order of thousands, scientific research has so far rarely or tangentially addressed the rankings of startup ecosystems. This study and the related research intend to fill this gap by presenting and analysing the characteristics of global rankings and identifying possible future research directions.
Single-nucleus RNA sequencing data from 2 cases of human carotid atherosclerotic plaque
Creators: name: 贾晓东(Xiaodong Jia)
Publisher: name: CNGB
Year: 2023
Subjects: Transcriptome or Gene expression
Multiisolate
Medical

description: In this study, two patients with carotid artery stenosis that underwent carotid endarterectomy were included as subjects. To reveal the mechanism of carotid atherosclerotic plaque formation, we performed single-cell nuclear sequencing of the carotid plaque tissue.
OʻZBEKISTON TOGʻLARIDA TARQALGAN JUNIPERUS TURKUMINING OʻSIMLIKLAR-QOPLAMIDAGI OʻRNI VA SENOPOPULYATSIYALARI
Creators: name: Nabijonova, Gulasal
Publisher: name: Zenodo
Year: 2025

description: В статье рассматривается роль видов Juniperus (можжевельник) в растительном покрове и ценопопуляциях гор Узбекистана. Анализируются их экологическое значение, естественное восстановление и влияние человека. Обсуждаются меры по их охране и устойчивому управлению.
Enhanced triplet Andreev reflection off a domain wall in a lateral geometry
Creators: name: Kupferschmidt, Joern N.
name: Brouwer, Piet W.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We find that the triplet Andreev reflection amplitude at the interface between a half-metal and an s-wave superconductor in the presence of a domain wall is significantly enhanced if the half metal is a thin film, rather than an extended magnet. The enhancement is by a factor $l_{\rm d}/d$, where $l_{\rm d}$ is the width of the domain wall and $d$ the film thickness. We conclude that in a lateral geometry, domain walls can be an effective source of the triplet proximity effect.
description: 4 pages, 3 figures
USP25 IgG4 patients
Creators: name: 赖娟(Juan Lai)
Publisher: name: CNGB
Year: 2023
Subjects: Raw sequence reads
Monoisolate

description: IgG4-related disease has been manifested with fibrosis, inflammation and deregulated metabolism clinical symptoms. IgG4 patients has reduced USP25 expression that upregulates Smad3, fibronectin and clo1a1 that cause the fibrosis.
A Min-plus Model of Age-of-Information with Worst-case and Statistical Bounds
Creators: name: Noroozi, Mahsa
name: Fidler, Markus
Publisher: name: arXiv
Year: 2021
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: Performance (cs.PF)
subject: FOS: Computer and information sciences

description: We consider networked sources that generate update messages with a defined rate and we investigate the age of that information at the receiver. Typical applications are in cyber-physical systems that depend on timely sensor updates. We phrase the age of information in the min-plus algebra of the network calculus. This facilitates a variety of models including wireless channels and schedulers with random cross-traffic, as well as sources with periodic and random updates, respectively. We show how the age of information depends on the network service where, e.g., outages of a wireless channel cause delays. Further, our analytical expressions show two regimes depending on the update rate, where the age of information is either dominated by congestive delays or by idle waiting. We find that the optimal update rate strikes a balance between these two effects.
Pilot experiences on independent living in high age via non-invasive multisensory data analytics
Creators: name: Andrushevich, Aliaksei
name: Camenzind, Martin
name: Nieke, Clemens
Publisher: name: Zenodo
Year: 2025
Subjects: human device interaction
independent living
non-invasive sensing
activities of daily living
patients with dementia

description: This work describes the self-management support experience of the Patients with Dementia (PwD) at home by delivering a technology integrated model of assistance to the Informal Caregivers (ICs). Based on the conducted pilot tests the authors analyse, if non-invasive sensing technologies, are able to support the assistance management of the ICs, by delivering reliable information about deviations on usual behavioural patterns of PwD. The work presents the basic results of using Recurrent Neural Networks (RNN) in behaviour classification and anomaly detection at home.
description: + ID der Publikation: hslu_112379 + Art des Beitrages: Präsentation Konferenzpapier/Tagungsbeitrag + Sprache: Englisch + Letzte Aktualisierung: 2025-04-01 16:26:36
A population level analysis of the gender gap in mathematics: Results on over 13 million children using the INVALSI dataset
Creators: name: Giofrè, David
name: Cornoldi, Cesare
name: Martini, Angela
name: Toffalini, Enrico
Publisher: name: arXiv
Year: 2021
Subjects: subject: History and Overview (math.HO)
subject: FOS: Mathematics

description: Whether males outperform females in mathematics is still debated. Such a gender gap varies across countries, but the determinants of the differences are unclear and could be produced by heterogeneity in the instructional systems or cultures and may vary across school grades. To clarify this issue, we took advantage of the INVALSI dataset, that offered over 13 million observations covering one single instructional system (i.e., the Italian system) in grades 2, 5, and 8, in the period 2010-2018. Results showed that males outperformed females in mathematics (and vice versa in reading), with gaps widening from the 2nd through to the 8th grade. The gender gap in mathematics was larger in the richer northern Italian regions (also characterized by greater gender equality) than in southern regions. This was not explained by average performance or fully accounted for by economic factors. No such north-south difference of the gap emerged in reading. Results are discussed with reference to the literature showing that the gender gap varies across world regions.
Synchrony with Shunting Inhibition
Creators: name: Talathi, Sachin S.
name: Hwang, Dong-Uk
name: Miliotis, Abraham
name: Carney, Paul R.
name: Ditto, William L.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Neurons and Cognition (q-bio.NC)
subject: Quantitative Methods (q-bio.QM)
subject: FOS: Biological sciences

description: Spike time response curves (STRC's) are used to study the influence of synaptic stimuli on the firing times of a neuron oscillator without the assumption of weak coupling. They allow us to approximate the dynamics of synchronous state in networks of neurons through a discrete map. Linearization about the fixed point of the discrete map can then be used to predict the stability of patterns of synchrony in the network. General theory for taking into account the contribution from higher order STRC terms, in the approximation of the discrete map for coupled neuronal oscillators in synchrony is still lacking. Here we present a general framework to account for higher order STRC corrections in the approximation of discrete map to determine the domain of 1:1 phase locking state in the network of two interacting neurons. We begin by demonstrating that the effect of synaptic stimuli through a shunting synapse to a neuron firing in the gamma frequency band (20-80 Hz) last for three consecutive firing cycles. We then show that the discrete map derived by taking into account the higher order STRC contributions is successfully able predict the domain of synchronous 1:1 phase locked state in a network of two heterogeneous interneurons coupled through a shunting synapse.
description: 4 Figures
Universal Flow in the First Stage of Relativistic Heavy Ion Collisions
Creators: name: Vredevoogd, Joshua
name: Pratt, Scott
Publisher: name: arXiv
Year: 2008
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: In the first moments of a relativistic heavy ion collision explosive collective flow begins to grow before the matter has yet equilibrated. Here it is found that as long as the stress-energy tensor is traceless, early flow is independent of whether the matter is composed of fields or particles, equilibrated or not, or whether the stress-energy tensor is isotropic. This eliminates much of the uncertainty in modeling early stages of a collision.
description: 9 pages, 2 figures
The dynamic dipole polarizabilities of the Li atom and the Be+ ion
Creators: name: Tang, Li-Yan
name: Yan, Zong-Chao
name: Shi, Ting-Yun
name: Mitroy, J.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: The dynamic dipole polarizabilities for the Li atom and the Be+ ion in the 2s and 2p states are calculated using the variational method with a Hylleraas basis. The present polarizabilities represent the definitive values in the non-relativistic limit. Corrections due to relativistic effects are also estimated. Analytic representations of the polarizabilities for frequency ranges encompassing the n=3 excitations are presented. The recommended polarizabilities for ^7Li and ^9Be+ were 164.11 \pm 0.03 a.u. and 24.489 \pm 0.004 a.u..
Untangling magnetic massive star properties with linear polarization variability and the Analytic Dynamical Magnetosphere model
Creators: name: Munoz, M. S.
name: Wade, G. A.
name: Faes, D. M.
name: Carciofi, A. C.
name: Labadie-Bartz, J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Light scattered off particles can become linearly polarized. Stars surrounded by oblique, co-rotating envelopes are therefore expected to manifest periodic linear polarimetric variations. The electron scattering magnetospheres of magnetic massive stars are expected to be suitable candidates to observe this effect. In this paper, we present the first semi-analytical model capable of synthesizing the continuum polarimetric signatures of magnetic O-type stars in an optically thin, single electron scattering limit. The purpose of this investigation is to improve our general understanding of magnetic hot stars by characterizing their polarimetric behaviour. Our linear polarization model is constructed by combining the analytical expressions for the polarimetric variations of an obliquely rotating envelope with the Analytic Dynamical Magnetosphere model to represent a physical model for the envelope density structure. We compute grids of model Stokes $Q$ and $U$ curves and show that their shapes are unique to the choice of inclination and obliquity angles. We apply our model to HD 191612, a prototypical Of?p-type star, having both polarimetric and photometric observations. We find that the polarimetric modulations are best reproduced with $i=19^{+12}_{-3}$$^\circ$, $β=71^{+3}_{-9}$$^\circ$, and $\log \dot{M}_{B=0}=-6.11^{+0.12}_{-0.06}$ [M$_{\odot}$ yr$^{-1}$]. These results agree with previous investigations of this star. By combining both polarimetric and photometric synthesis tools, we simultaneously model the observations thus adding further refinement of the wind and magnetic properties of HD 191612.
description: Accepted by MNRAS
Remembering what we like: Toward an agent-based model of Web traffic
Creators: name: Goncalves, Bruno
name: Meiss, Mark R.
name: Ramasco, Jose J.
name: Flammini, Alessandro
name: Menczer, Filippo
Publisher: name: arXiv
Year: 2009
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: Computers and Society (cs.CY)
subject: Information Retrieval (cs.IR)
subject: Multiagent Systems (cs.MA)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: Analysis of aggregate Web traffic has shown that PageRank is a poor model of how people actually navigate the Web. Using the empirical traffic patterns generated by a thousand users over the course of two months, we characterize the properties of Web traffic that cannot be reproduced by Markovian models, in which destinations are independent of past decisions. In particular, we show that the diversity of sites visited by individual users is smaller and more broadly distributed than predicted by the PageRank model; that link traffic is more broadly distributed than predicted; and that the time between consecutive visits to the same site by a user is less broadly distributed than predicted. To account for these discrepancies, we introduce a more realistic navigation model in which agents maintain individual lists of bookmarks that are used as teleportation targets. The model can also account for branching, a traffic property caused by browser features such as tabs and the back button. The model reproduces aggregate traffic patterns such as site popularity, while also generating more accurate predictions of diversity, link traffic, and return time distributions. This model for the first time allows us to capture the extreme heterogeneity of aggregate traffic measurements while explaining the more narrowly focused browsing patterns of individual users.
description: 4 pages, 4 figures. Accepted in WSDM 2009 Late Breaking Results
Resolved Gaia Triples
Creators: name: Tokovinin, Andrei
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: A sample of 392 low-mass hierarchical triple stellar systems within 100 pc resolved by Gaia as distinct sources is defined. Owing to the uniform selection, the sample is ideally suited to study unbiased statistics of wide triples. The median projected separations in their inner and outer pairs are 151 and 2569 au, respectively, the median separation ratio is close to 15. Some triples appear in non-hierarchical configurations, and many are just above the dynamical stability limit. Internal motions in these systems are known with sufficient accuracy to determine the orbital motion sense of the outer and inner pairs and to reconstruct the eccentricity distributions. The mean inner and outer eccentricities are 0.66+-0.02 and 0.54+-0.02, respectively; the less eccentric outer orbits are explained by dynamical stability. The motion sense of the inner and outer pairs is almost uncorrelated, implying a mean mutual inclination of 83.1+-4.5deg. The median mass of the most massive component is 0.71 Msun, the median system mass is 1.53 Msun. In a 0.69 fraction of the sample the primary belongs to the inner binary, while in the remaining systems it is the tertiary. A 0.21 fraction of the inner subsystems are twins with mass ratios >0.95. The median outer mass ratio is 0.41; it decreases mildly with increasing outer separation. Presumably, these wide hierarchies were formed by collapse and fragmentation of isolated cores in low-density environments and represent a small fraction of initial systems that avoided dynamical decay. Wide pre-main sequence multiples in Taurus could be their progenitors.
description: Accepted by the Astrophysical Journal. 13 pages, 13 figures
Spin Inelastic Electron Tunneling Spectroscopy on Local Spin Adsorbed on Surface
Creators: name: Fransson, J.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The recent experimental conductance measurements taken on magnetic impurities on metallic surfaces, using scanning tunneling microscopy technique and suggesting occurrence of inelastic scattering processes, are theoretically addressed. We argue that the observed conductance signatures are caused by transitions between the spin states which have opened due to e.g. exchange coupling between the local spins and the tunneling electrons, and are directly interpretable in terms of inelastic transitions energies. Feasible measurements using spin-polarized scanning tunneling microscopy that would enable new information about the excitation spectrum of the local spins are discussed.
description: 5 pages, 1 fugure, accepted in the Nano Letters
A para-differential renormalization technique for nonlinear dispersive equations
Creators: name: Herr, Sebastian
name: Ionescu, Alexandru D.
name: Kenig, Carlos E.
name: Koch, Herbert
Publisher: name: arXiv
Year: 2009
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35Q53

description: For α\in (1,2) we prove that the initial-value problem \partial_t u+D^α\partial_x u+\partial_x(u^2/2)=0 on \mathbb{R}_x\times\mathbb{R}_t; u(0)=ϕ, is globally well-posed in the space of real-valued L^2-functions. We use a frequency dependent renormalization method to control the strong low-high frequency interactions.
description: 42 pages, no figures
On The Possible Mechanism Of Energy Dissipation In Shock-Wave Fronts Driven Ahead Of Coronal Mass Ejections
Creators: name: Eselevich, M.
name: Eselevich, V.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Analysis of Mark 4 and LASCO C2, C3 coronagraph data shows that, at the distance $R \leq 6$ R$_\odot$ from the center of the Sun, the thickness of a CME-generated shock-wave front ($δ_F$) may be of order of the proton mean free path. This means that the energy dissipation mechanism in the shock front at these distances is collisional. A new discontinuity (thickness $δ_F^* \ll δ_F$) is observed to appear in the anterior part of the front at $R \geq 10$ R$_\odot$. Within the limits of experimental error, the thickness $δ_F^* \approx$ 0.1-0.2 R$_\odot$ does not vary with distance and is determined by the spatial resolution of the LASCO C3 instrument. At the initial stage of formation, the discontinuity on the scale of $δ_F^*$ has rather small amplitude and exists simultaneously with the front having thickness $δ_F$. The relative amplitude of the discontinuity gradually increases with distance, and the brightness profile behind it becomes even. Such transformations may be associated with the transition from a collisional shock wave to a collisionless one.
description: 3 figures
Lens or resonator? - Electromagnetic behavior of an extended hemielliptic lens for a sub-mm wave receiver
Creators: name: Boriskin, A. V.
name: Nosich, A. I.
name: Boriskina, S. V.
name: Benson, T. M.
name: Sewell, P.
name: Altintas, A.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Optics (physics.optics)
subject: Classical Physics (physics.class-ph)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: The behavior of a 2-D model of an extended hemielliptic silicon lens of a size typical for THz applications is accurately studied for the case of a plane E-wave illumination. The full-wave analysis of the scattering problem is based on the Muller boundary integral equations that are uniquely solvable. Galerkin discretization scheme with a trigonometric basis leads to a very efficient numerical algorithm. Numerical results related to the focusability of the lens versus its rear-side extension and the angle of the plane-wave incidence, as well as near-field profiles, demonstrate strong resonances. Such effects can change the principles of optimal design of lens-based receivers.
description: 5 pages, 6 figures
Asymptotics of Greedy Energy Points
Creators: name: García, A. López
name: Saff, E. B.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 65D99, 52A40 (Primary), 78A30 (Secondary)

description: For a symmetric kernel $k:X\times X \to \mathbb{R}\cup\{+\infty\}$ on a locally compact Hausdorff space $X$, we investigate the asymptotic behavior of greedy $k$-energy points $\{a_{i}\}_{1}^{\infty}$ for a compact subset $A\subset X$ that are defined inductively by selecting $a_{1}\in A$ arbitrarily and $a_{n+1}$ so that $\sum_{i=1}^{n}k(a_{n+1},a_{i})=\inf_{x\in A}\sum_{i=1}^{n}k(x,a_{i})$. We give sufficient conditions under which these points (also known as Leja points) are asymptotically energy minimizing (i.e. have energy $\sum_{i\neq j}^{N}k(a_{i},a_{j})$ as $N\to\infty$ that is asymptotically the same as $\mathcal{E}(A,N):=\min\{\sum_{i\neq j}k(x_{i},x_{j}):x_{1},...,x_{N}\in A\}$), and have asymptotic distribution equal to the equilibrium measure for $A$. For the case of Riesz kernels $k_{s}(x,y):=|x-y|^{-s}$, $s>0$, we show that if $A$ is a rectifiable Jordan arc or closed curve in $\mathbb{R}^{p}$ and $s>1$, then greedy $k_{s}$-energy points are not asymptotically energy minimizing, in contrast to the case $s<1$. (In fact we show that no sequence of points can be asymptotically energy minimizing for $s>1$.) Additional results are obtained for greedy $k_{s}$-energy points on a sphere, for greedy best-packing points, and for weighted Riesz kernels.
description: 33 pages, 1 figure
Absorption and Fluorescence Properties of Oligothiophene Biomarkers from Long-Range-Corrected Time-Dependent Density Functional Theory
Creators: name: Wong, Bryan M.
name: Piacenza, Manuel
name: Della Sala, Fabio
Publisher: name: arXiv
Year: 2009
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: The absorption and fluorescence properties in a class of oligothiophene push-pull biomarkers are investigated with a long-range-corrected (LC) density functional method. Using linear response time-dependent density functional theory (TDDFT), we calculate excitation energies, fluorescence energies, oscillator strengths, and excited-state dipole moments. To benchmark and assess the quality of the LC-TDDFT formalism, an extensive comparison is made between LC-BLYP excitation energies and approximate coupled cluster singles and doubles (CC2) calculations. When using a properly-optimized value of the range parameter, "mu", we find that the LC technique provides an accurate description of charge-transfer excitations as a function of biomarker size and chemical functionalization. In contrast, we find that re-optimizing the fraction of Hartree Fock exchange in conventional hybrid functionals still yields an inconsistent description of excitation energies and oscillator strengths for the two lowest excited states in our series of biomarkers. The results of the present study emphasize the importance of a distance-dependent contribution of exchange in TDDFT for investigating excited-state properties.
description: Accepted by Physical Chemistry Chemical Physics
Estetica ed etica: un itinerario interpretativo, alla luce della ricerca di valori nel pensiero di Ingarden, Tischner, Levinas
Creators: name: Di Bona, Cecilia Maria <1960>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2007
Subjects: M-FIL/03 Filosofia morale

description: The research is an itinerary from the discovery of the force of Love in the Song of Songs, where the human figure is given entirely through aesthetics, right to the agony of the other's death, where ethics, the "Severe Name of Love", is the only guard left; a journey through the contradictions of human mind, that, though aiming at Good, Beauty, Happiness, is completely immersed into the darkness of its finiteness and into evil. The consciousness leads to the creation of a world whose essential prefiguration is the Beauty; whose fundamental expression is the Good. Ethics must translate itself in responsability towards the other, in the history. This immersion into reality preserves the aesthetic and ethic dimension from the temptation of absolutizing the finite. In this work, the proximity and divergence between the aesthetic and ethic dimension is analysed, with reference to significant moments of the philosophical reflection, namely in the thought of Ingarden, Tishner and Levinas.