cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Multichannel photoelectron phase lag across atomic barium autoionizing resonances
Creators: name: Wang, Yimeng
name: Greene, Chris H.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences
subject: 81V45 (Primary) 78A60(Secondary)

description: Phase lag associated with coherent control where an excited system decays into more than one product channel has been subjected to numerous investigations. Although previous theoretical studies have treated the phase lag across resonances in model calculations, quantitative agreement has never been achieved between the theoretical model and experimental measurements of phase lag from the $ω-2ω$ ionization of atomic barium \cite{PhysRevLett.98.053001,PhysRevA.76.053401}, suggesting that a toy model with phenomenological parameters is inadequate to describe the observed phase lag behavior. Here the phase lag is treated quantitatively from a multichannel coupling formulation, and our calculations based on multichannel quantum defect and $R$-matrix treatment achieves good agreement with the experimental observations. Our treatment also develops formulas to describe the effects of hyperfine depolarization on multiphoton ionization processes, and further, identifies resonances between $Ba^{+}$ $5d_{3/2}$ and $5d_{5/2}$ thresholds that have apparently never been experimentally observed and classified.
description: 8 pages, 5 figures
Additional file 9 of Endolysins of bacteriophage vB_Sal-S-S10 can naturally lyse Salmonella enteritidis
Creators: name: Wang, Xinrui
name: Han, Lili
name: Rong, Jiaqing
name: Ren, Huiying
name: Liu, Wenhua
name: Zhang, Can
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: Ecology
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Infectious Diseases
subject: FOS: Health sciences

description: Additional file 9.
Characterization of L-type Calcium Channel Binding-Site of a new class of Calcium modulators by a Multidisciplinary approach
Creators: name: Ugenti, Maria Paola <1977>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2009
Subjects: CHIM/08 Chimica farmaceutica

description: Many potential diltiazem related L-VDCC blockers were developed using a multidisciplinary approach. This current study was to investigate and compare diltiazem with to the newly developed compounds by mouse Langendorff-perfused heart, Ca2+-transient and on recombinant L-VDCC. Twenty particular compounds were selected by the ligand-based virtual screening procedure (LBVS). From these compounds, five of them (5b, M2, M7, M8 and P1) showed a potent and selective inotropic activity on guinea-pig left atria driven 1 Hz. Further assays displayed an interesting negative inotropic effect of M2, M8, P1 and M7 on guinea pig isolated left papillary muscle driven at 1 Hz, a relevant vasorelaxant activity of 5b, M2, M7, M8 and P1 on K+-depolarized guinea-pig ileum longitudinal smooth muscle and a significant inhibition of contraction of 5b, M2, M8 and P1 on carbachol stimulated ileum longitudinal smooth muscle.
Wild-type human heart and rabbit lung α1 subunits were expressed (combined with the regulatory α2δ and β3 subunits) in Xenopus Leavis oocytes using a two-electrode voltage clamp technique. Diltiazem is a benzothiazepine Ca2+ channel blocker used clinically for its antihypertensive and antiarrhythmic effects. Previous radioligand binding assays revealed a complex interaction with the benzothiazepine binding site for M2, M7 and M8. (Carosati E. et al. J. Med Chem. 2006, 49; 5206). In agreement with this findings, the relative order of increased rates of contraction and relaxation at lower concentrations s(≤10-6M) in unpaced hearts was M7>M2>M8>P1. Similar increases in Ca2+ transient were observed in cardiomyocytes. Diltiazem showed negative inotropic effects whereas 5b had no significant effect. Diltiazem blocks Ca2+current in a use-dependent manner and facilitates the channel by accelerating the inactivation and decelerating the recovery from inactivation. In contrast to diltiazem, the new analogs had no pronounced use-dependence. Application of 100 μM M8, M2 showed ~ 10% tonic block; in addition, M8, M2 and P1 shifted the steady state inactivation in hyperpolarized direction and the current inactivation time was significantly decreased compared with control (219.6 ± 11.5 ms, 226 ± 14.5 vs. 269 ± 12.9 vs. 199.28 ± 8.19 ms). Contrary to diltiazem, the recovery from the block by M8 and M2 was comparable to control. Only P1 showed a significantly decrease of the time for the recovery from inactivation. All of the compounds displayed the same sensitivity on the Ca2+ channel rabbit lung α1 except P1. Taken together, these findings suggest that M8, M2 and P1 might directly decrease the binding affinity or allow rapid dissociation from the benzothiazepine binding site.
Density-dependent two-dimensional optimal mobility in ultra-high-quality semiconductor quantum wells
Creators: name: Ahn, Seongjin
name: Sarma, Sankar Das
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We calculate using the Boltzmann transport theory the density dependent mobility of two-dimensional (2D) electrons in GaAs, SiGe and AlAs quantum wells as well as of 2D holes in GaAs quantum wells. The goal is to precisely understand the recently reported breakthrough in achieving a record 2D mobility for electrons confined in a GaAs quantum well. Comparing our theory with the experimentally reported electron mobility in GaAs quantum wells, we conclude that the mobility is limited by unintentional background random charged impurities at an unprecedented low concentration of $\sim10^{13} \mathrm{cm}^{-3}$. We find that this same low level of background disorder should lead to 2D GaAs hole and 2D AlAs electron mobilities of $\sim10^7 \mathrm{cm}^2/Vs$ and $\sim4\times10^7 \mathrm{cm}^2/Vs$, respectively, which are much higher theoretical limits than the currently achieved experimental values in these systems. We therefore conclude that the current GaAs hole and AlAs electron systems are much dirtier than the state of the arts 2D GaAs electron systems. We present theoretical results for 2D mobility as a function of density, effective mass, quantum well width, and valley degeneracy, comparing with experimental data.
description: 6 pages, 4 figures, 1 table
Integrating new and traditional approaches
for the estimate of slip-rates of active faults:
examples from the Mw 6.3, 2009 L’Aquila
earthquake area, Central Italy
Creators: name: Civico, Riccardo <1980>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2012
Subjects: GEO/10 Geofisica della terra solida

description: This thesis is based on the integration of traditional and innovative approaches aimed at improving the normal faults seimogenic identification and characterization, focusing mainly on slip-rate estimate as a measure of the fault activity. 
The L’Aquila Mw 6.3 April 6, 2009 earthquake causative fault, namely the Paganica - San Demetrio fault system (PSDFS), was used as a test site. We developed a multidisciplinary and scale‐based strategy consisting of paleoseismological investigations, detailed geomorphological and geological field studies, as well as shallow geophysical imaging and an innovative application of physical properties measurements. 
We produced a detailed geomorphological and geological map of the PSDFS, defining its tectonic style, arrangement, kinematics, extent, geometry and internal complexities. The PSDFS is a 19 km-long tectonic structure, characterized by a complex structural setting and arranged in two main sectors: the Paganica sector to the NW, characterized by a narrow deformation zone, and the San Demetrio sector to SE, where the strain is accommodated by several tectonic structures, exhuming and dissecting a wide Quaternary basin, suggesting the occurrence of strain migration through time.
The integration of all the fault displacement data and age constraints (radiocarbon dating, optically stimulated luminescence (OSL) and tephrochronology) helped in calculating an average Quaternary slip-rate representative for the PSDFS of 0.27 - 0.48 mm/yr. On the basis of its length (ca. 20 km) and slip per event (up to 0.8 m) we also estimated a max expected Magnitude of 6.3-6.8 for this fault. 
All these topics have a significant implication in terms of surface faulting hazard in the area and may contribute also to the understanding of the PSDFS seismic behavior and of the local seismic hazard.
Molecular characterization of human CD4+ IL-10-producing regulatory cells
Creators: name: De Simone, Marco <1975>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2014
Subjects: BIO/10 Biochimica

description: Previous studies in the group led to the identification of CD4+FOXP3- cells with regulatory functions in human blood that coproduce IL-10 and IFN-gamma. These cells do not belong to the Treg cell lineage since they are Foxp3- but they show some similarities with Th1 cells since they express CCR5, T-bet and produce high levels of IFN-gamma. Thus, they share relevant characteristics with both T regulatory type I cells (Tr1) and Th1 cells and we called them Th1-10 cells.
In this study we presented a molecular characterization of Th1-10 cells that includes a gene expression and a microRNA profiling and performed functional studies to assess Th1-10 cells regulatory properties. We demonstrated that Th1-10 cells have a high regulatory potential being able to block the proliferation of activated CD4 naïve T cells to a similar extent as conventional Treg cells, and that this suppression capacity is at least partially mediated by secreted IL10.
We showed also that Th1-10 cells are closely related to Th1 effector memory cells and express genes involved in cytotoxicity. In particular, they express the transcription factor EOMES and the cytotoxic effector molecules GZMA and GZMK, and they release cytotoxic granules upon stimulation. Moreover, we found that Eomes regulates cytotoxic functions in CD4+ T cells.
We demonstrated that miR-92a, selectively downregulated in Th1-10 cells, directly targets the 3’UTR of EOMES.and this finding identifies miR-92a as a possible mediator of Th1-10 cytotoxicity. 
Th1-10 cells retain some proliferative capacity when sorted ex vivo and activated in vitro via their TCR, and this effect is markedly enhanced by IL-15, which also had a pro-survival effect on Th-10 cells.
Thus, in contrast to conventional cytotoxic T cells, Th1-10 cells have cytotoxic and regulatory functions and are not terminally differentiated, since they retain proliferative capacity.
Phonons of metallic hydrogen with quantum Monte Carlo
Creators: name: Ly, Kevin
name: Ceperley, David
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We describe a simple scheme to perform phonon calculations with quantum Monte Carlo (QMC) methods, and demonstrate it on metallic hydrogen. Because of the energy and length scales of metallic hydrogen, and the statistical noise inherent to QMC methods, the conventional manner of calculating force constants is prohibitively expensive. We show that our alternate approach is nearly 100 times more efficient in resolving the force constants needed to calculate the phonon spectrum in the harmonic approximation. This requires only the calculation of atomic forces, as in the conventional approach, and otherwise little or no programmatic modifications.
title: GSICS quarterly. Volume 1, number 3 (2007)
Creators: name: Global Space-Based Inter-Calibration System Coordination Center,
Publisher: name: U.S. Department of Commerce, National Oceanic and Atmospheric Administration, National Environmental Satellite, Data, and Information Service, Center for Satellite Applications and Research
Year: 2007
Subjects: subject: Satellite meteorology
subject: Global Observing System (Meteorology)

description: GSICS Quarterly is a newsletter designed to communicate GSICS activities to all GSICS members and partners, as well as to satellite data users and policy makers
Proof of Swiss Cheese Version of Deligne's Conjecture
Creators: name: Dolgushev, Vasiliy
name: Tamarkin, Dmitry
name: Tsygan, Boris
Publisher: name: arXiv
Year: 2009
Subjects: subject: K-Theory and Homology (math.KT)
subject: Algebraic Topology (math.AT)
subject: FOS: Mathematics
subject: 18D50, 16E40

description: For an associative algebra A we consider the pair "the Hochschild cochain complex C*(A,A) and the algebra A". There is a natural 2-colored operad which acts on this pair. We show that this operad is quasi-isomorphic to the singular chain operad of Voronov's Swiss Cheese operad. This statement is the Swiss Cheese version of the Deligne conjecture formulated by M. Kontsevich in arXiv:math/9904055.
description: The article was rewritten. Multiple suggestions of referees were addressed. The paper is accepted for publication to IMRN
Characterization of preclones by matrix collections
Creators: name: Lehtonen, Erkko
Publisher: name: arXiv
Year: 2009
Subjects: subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics
subject: 08A40, 06A15

description: Preclones are described as the closed classes of the Galois connection induced by a preservation relation between operations and matrix collections. The Galois closed classes of matrix collections are also described by explicit closure conditions.
description: 11 pages
title: Síndrome del Incisivo Central Maxilar Medio Único: hallazgos radiológicos
Creators: name: Blanco Lobato, Patricia
Publisher: name: Sociedad Española de Radiología Médica
Year: 2014
Subjects: subject: Endocrine disorders
subject: Genetic defects
subject: CT
subject: MR
subject: Paediatric
subject: Neuroradiology brain

description: Objetivo docente
Revisión del tema
Conclusiones
Bibliografía
description: Objetivo docente:
Conocer el espectro de malformaciones craneofaciales y encefálicas que pueden formar parte del Síndrome del Incisivo Central Maxilar Medio Único (SMMCI por sus siglas en inglés). Discutir las técnicas de neuroimagen útiles en su detección y...
title: Suelo de la boca y espacio sublingual. Anatomía y patología.
Creators: name: Sanchez Alonso, Lucia
Publisher: name: Sociedad Española de Radiología Médica
Year: 2014
Subjects: subject: Ultrasound
subject: CT
subject: MR
subject: Head and neck

description: Objetivo docente
Revisión del tema
Conclusiones
Bibliografía
description: Objetivo docente:
Conocer la anatomía del suelo de la boca y espacio sublingual y analizar las estructuras claves en ecografía,
TC y RM. Analizar las diferentes patologías que pueden afectar a esta región anatómica y el papel del radiógo en el diagnóstico y la...
Magnon softening in a ferromagnetic monolayer: a first-principles spin dynamics study
Creators: name: Bergman, Anders
name: Taroni, Andrea
name: Bergqvist, Lars
name: Hellsvik, Johan
name: Hjorvarsson, Bjorgvin
name: Eriksson, Olle
Publisher: name: arXiv
Year: 2010
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We study the Fe/W(110) monolayer system through a combination of first principles calculations and atomistic spin dynamics simulations. We focus on the dispersion of the spin waves parallel to the [001] direction. Our results compare favorably with the experimental data of Prokop et al. [Phys. Rev. Lett. 102, 177206], and correctly capture a drastic softening of the magnon spectrum, with respect to bulk bcc Fe. The suggested shortcoming of the itinerant electron model, in particular that given by density functional theory, is refuted. We also demonstrate that finite temperature effects are significant, and that atomistic spin dynamics simulations represent a powerful tool with which to include these.
description: v1: 11 pages, 3 figures. v2: double column, 5 pages, 3 figures, typos corrected, references added
Five young $δ$ Scuti stars in the Pleiades seen with Kepler/K2
Creators: name: Murphy, Simon J.
name: Bedding, Timothy R.
name: White, Timothy R.
name: Li, Yaguang
name: Hey, Daniel
name: Reese, Daniel
name: Joyce, Meridith
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We perform mode identification for five $δ$ Scuti stars in the Pleiades star cluster, using custom light curves from K2 photometry. By creating échelle diagrams, we identify radial and dipole mode ridges, comprising a total of 28 radial and 16 dipole modes across the five stars. We also suggest possible identities for those modes that lie offset from the radial and dipole ridges. We calculate non-rotating stellar pulsation models to verify our mode identifications, finding good agreement within the age and metallicity constraints of the cluster. We also find that for all stars, the least dense models are preferred, reflecting the lower density of these oblate, rotating stars. Three of the five stars show rotationally-split multiplets. We conclude that the sample shows promise for asteroseismic rotation rates, masses, and ages with rotating models in the future. Our preliminary modelling also indicates some sensitivity to the helium abundance.
description: Submitted to MNRAS
Impact of cosmic filaments on the gas accretion rate of dark matter halos
Creators: name: Zhu, Weishan
name: Zhang, Fupeng
name: Feng, Long-Long
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We investigate the impact of cosmic filaments on the gas accretion rate, $\dot{M}_{\rm{gas}}$, of dark matter halos in filaments, based on cosmological hydrodynamic simulation. We find that for halos less massive than $10^{12.0}\ \rm{M_{\odot}}$, $\dot{M}_{\rm{gas}}$ of halos residing in prominent filaments (with width $D_{\rm{fil}}>3\ \rm{Mpc}/h$) is lower than halos residing in tenuous filaments ($D_{\rm{fil}}<3\ \rm{Mpc}/h$) by $20-30\%$ at $z=0.5$, and by a factor of 2-3 at $z=0$. However, $\dot{M}_{\rm{gas}}$ depends weakly on the physical distance between halo center and the spine of filaments from high redshift to $z=0$, only shows clear difference between the inner and outer regions in prominent filaments at $z=0$. We further probe the thermal properties of gas in prominent and tenuous filaments, which appear in relatively highly and intermediate overdense regions, respectively. The gas in prominent filaments is hotter. Around $26\%$, $38\%$ and $45\%$ of gases in prominent filaments are hotter than $10^6$ K at $z=1.0, 0.5$ and $z=0.0$ respectively. The corresponding fractions in tenuous filaments are merely $\sim 6\%, 9\%$ and $11\%$. The suppressed gas accretion rate for low-mass halos in prominent filaments at $z \lesssim 0.5$ may result from the hotter ambient gas, which could provide a physical processing mechanism to cut down the supply of gas to halos before they enter clusters. This process meets partially the need of the preheating mechanism implemented in some semi-analytical models of galaxy formation, but works only for $\sim 20\%$ of halos at $z < 1$.
description: 16 pages, 12 figures. published version in The Astrophysical Journal
Il cavo orale del paziente obeso
Creators: name: Costella, Giorgia <1979>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2009
Subjects: MED/28 Malattie odontostomatologiche

description: La frequenza delle condizioni di sovrappeso ed obesità è andata aumentando negli ultimi decenni al punto che, secondo l’Organizzazione Mondiale della Sanità, l’obesità è diventata un problema di salute pubblica di proporzioni epidemiche in tutti i Paesi occidentali.
Questa tesi nasce dall’obiettivo di individuare caratteristiche odontostomatologiche  peculiari in pazienti affetti da obesità. 
Lo studio è stato condotto su 160 pazienti. Il gruppo campione, composto da 93 pazienti di età compresa tra i 6 ed i 16 anni (età media 11 anni) ed affetti da obesità (percentile oltre il 95°), è stato suddiviso in due sottogruppi: sottogruppo A comprendente 67 pazienti con anamnesi medica negativa affetti da obesità primaria; sottogruppo B comprendente 26 pazienti obesi portatori di sindromi genetiche in cui l’obesità risulta essere dalla letteratura parte del quadro sindromico. Al gruppo controllo, randomizzato, appartengono 67 pazienti normopeso con anamnesi medica negativa. 
Sono state indagate:
- prevalenza della patologia cariosa 
- stato di salute parodontale
- età dentale 
- grado di maturazione ossea
- presenza di malocclusioni.
Dallo studio non emerge una correlazione positiva tra obesità primaria e suscettibilità alla patologia cariosa. Si rileva invece una relazione statisticamente significativa tra obesità e infiammazione dei tessuti parodontali (CPI pari ad 1 nella quasi totalità dei pazienti del sottogruppo A) - età dentale e maturazione ossea anticipata e - patologie ortopedico-ortodontiche.
Da qui la necessità di progettare efficaci programmi di prevenzione e piani di trattamento specifici, in relazione alle problematiche relative ai rischi connessi al possibile sviluppo di malattia parodontale e all’anomala tipologia di accrescimento.
Il trattamento del paziente affetto da obesità va affrontato in un’ottica di interdisciplinarietà: all’odontoiatra e all’ortodontista si dovranno affiancare il pediatra, per l’individuazione delle fasce di pazienti a rischio e per la sensibilizzazione del paziente e dei familiari nei confronti della prevenzione odontoiatrica, e figure specialistiche quali l’otorino, il fisiatra, l’auxologo e l’endocrinologo.
Molecular approach to Neurodegenerative Disorders: Role of Nociceptin/Orphanin FQ - NOP System in Parkinson and Epigenetic Mechanism in Alzheimer's Disease
Creators: name: Bastías Candia, Sussy Del Carmen <1979>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2012
Subjects: BIO/14 Farmacologia

description: With life expectancies increasing around the world, populations are getting age and neurodegenerative diseases have become a global issue. For this reason we have focused our attention on the two most important neurodegenerative diseases: Parkinson’s and Alzheimer’s. Parkinson’s disease is a chronic progressive neurodegenerative movement disorder of multi-factorial origin. Environmental toxins as well as agricultural chemicals have been associated with PD. Has been observed that N/OFQ contributes to both neurotoxicity and symptoms associated with PD and that pronociceptin gene expression is up-regulated in rat SN of 6-OHDA and MPP induced experimental parkinsonism. First, we investigated the role of N/OFQ-NOP system in the pathogenesis of PD in an animal model developed using PQ and/or MB. Then we studied Alzheimer's disease. This disorder is defined as a progressive neurologic disease of the brain leading to the irreversible loss of neurons and the loss of intellectual abilities, including memory and reasoning, which become severe enough to impede social or occupational functioning. Effective biomarker tests could prevent such devastating damage occurring. We utilized the peripheral blood cells of AD discordant monozygotic twin in the search of peripheral markers which could reflect the pathology within the brain, and also support the hypothesis that PBMC might be a useful model of epigenetic gene regulation in the brain. We investigated the mRNA levels in several genes involve in AD pathogenesis, as well DNA methylation by MSP Real-Time PCR. Finally by Western Blotting we assess the immunoreactivity levels for histone modifications. Our results support the idea that epigenetic changes assessed in PBMCs can also be useful in neurodegenerative disorders, like AD and PD, enabling identification of new biomarkers in order to develop early diagnostic programs.
Rural destinations and the technology-based induced tourism: A little community organizational case
Creators: name: Modarelli, Giuseppe
name: Rainero, Christian
Publisher: name: Economia Aziendale Online -
Year: 2025
Subjects: Inner areas, High impact sectors, Tourism, Organization, Local, Technology

description: In light of persistent challenges such as climate change, food safety controversies, environmental degradation and occupational pressures linked to urban lifestyles, the tourism sector is experiencing a significant transformation, transcending traditional paradigms. Whereas exotic locales were the predominant preference for travelers in previous decades, there is now an increasing inclination towards remote and rural regions, which are progressively becoming more accessible and appealing. To leverage this trend, local authorities and event coordinators are formulating strategic initiatives aimed at enhancing the attractiveness of lesser-known destinations. This study, based on a previous one, produces insights in a longitudinal perspective, centering on the evaluation of semi-structured interviews and focus group, employing SWOT and perception analyses, to examine the effects of the event "Dream of a Night… to That Town", especially considering the evolutionary value of technology. The double cycle of investigation shows a longitudinal view on the whole time range of the festival series organization. The research advocates for a horizontal approach, presenting a replicable best practice for the rural tourism domain. This model is in accordance with state decentralization policies, highlighting community-driven engagement as a pivotal element for enhancing competitiveness. By questioning contemporary tourism trends and preferences for mass tourism, this investigation promotes a reevaluation of attractiveness criteria, emphasizing remote areas that offer unforgettable and immersive tourism experiences, depicting identity and authenticity. Traditions, myths and legends, in addition to the cultural heritage would create a perfect humus for a perspective landscape toward the future of alternative tourism also boosted by the possibilities created thanks to the technology advancement. Basilicata region, thanks to its traditions and rural-anchored life-style would strengthen and push best practices solution following bottom up and horizontal co-creative strategies for implementing and developing high impact sectors, still underestimated.
description: Economia Aziendale Online -, Vol 16, No 1 (2025): ISSUE 1/2025
Lin-Lu-Yau curvature and diameter of amply regular graphs
Creators: name: Li, Xintian
name: Liu, Shiping
Publisher: name: arXiv
Year: 2021
Subjects: subject: Combinatorics (math.CO)
subject: Differential Geometry (math.DG)
subject: FOS: Mathematics

description: By Hall's marriage theorem, we study lower bounds of the Lin-Lu-Yau curvature of amply regular graphs with girth $3$ or $4$ under different parameter restrictions. As a consequence, we show that each conference graph has positive Lin-Lu-Yau curvature. Our approach also provides a geometric proof of a classical diameter estimate for amply regular graphs in the case of girth $4$ and some special cases of girth $3$.
description: 5 pages
Observations of Doppler Boosting in Kepler Lightcurves
Creators: name: van Kerkwijk, Marten H.
name: Rappaport, Saul A.
name: Breton, Rene P.
name: Justham, Stephen
name: Podsiadlowski, Philipp
name: Han, Zhanwen
Publisher: name: arXiv
Year: 2010
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Among the initial results from Kepler were two striking lightcurves, for KOI 74 and KOI 81, in which the relative depths of the primary and secondary eclipses showed that the more compact, less luminous object was hotter than its stellar host. That result became particularly intriguing because a substellar mass had been derived for the secondary in KOI 74, which would make the high temperature challenging to explain; in KOI 81, the mass range for the companion was also reported to be consistent with a substellar object. We re-analyze the Kepler data and demonstrate that both companions are likely to be white dwarfs. We also find that the photometric data for KOI 74 show a modulation in brightness as the more luminous star orbits, due to Doppler boosting. The magnitude of the effect is sufficiently large that we can use it to infer a radial velocity amplitude accurate to 1 km/s. As far as we are aware, this is the first time a radial-velocity curve has been measured photometrically. Combining our velocity amplitude with the inclination and primary mass derived from the eclipses and primary spectral type, we infer a secondary mass of 0.22+/-0.03 Msun. We use our estimates to consider the likely evolutionary paths and mass-transfer episodes of these binary systems.
description: 8 pages, 4 figures, ApJ 715, 51 (v4 is updated to match the published version, including a note added in proof with measured projected rotational velocities).
Variability analysis of discrete event series and wavefront patterns in surface electrocardiogram: contributions to psychophysiological and clinical research
Creators: name: Di Marco, Luigi Yuri <1971>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2012
Subjects: ING-INF/06 Bioingegneria elettronica e informatica

description: The surface electrocardiogram (ECG) is an established diagnostic tool for the detection of abnormalities in the electrical activity of the heart. The interest of the ECG, however, extends beyond the diagnostic purpose. In recent years, studies in cognitive psychophysiology have related heart rate variability (HRV) to memory performance and mental workload.
The aim of this thesis was to analyze the variability of surface ECG derived rhythms, at two different time scales: the discrete-event time scale, typical of beat-related features (Objective I), and the “continuous” time scale of separated sources in the ECG (Objective II), in selected scenarios relevant to psychophysiological and clinical research, respectively.
Objective I) Joint time-frequency and non-linear analysis of HRV was carried out, with the goal of assessing psychophysiological workload (PPW) in response to working memory engaging tasks. Results from fourteen healthy young subjects suggest the potential use of the proposed indices in discriminating PPW levels in response to varying memory-search task difficulty.
Objective II) A novel source-cancellation method based on morphology clustering was proposed for the estimation of the atrial wavefront in atrial fibrillation (AF) from body surface potential maps. 
Strong direct correlation between spectral concentration (SC) of atrial wavefront and temporal variability of the spectral distribution was shown in persistent AF patients, suggesting that with higher SC, shorter observation time is required to collect spectral distribution, from which the fibrillatory rate is estimated. This could be time and cost effective in clinical decision-making. The results held for reduced leads sets, suggesting that a simplified setup could also be considered, further reducing the costs.
In designing the methods of this thesis, an online signal processing approach was kept, with the goal of contributing to real-world applicability. An algorithm for automatic assessment of ambulatory ECG quality, and an automatic ECG delineation algorithm were designed and validated.
Nonlocal extension of causal thermodynamics of the isotropic cosmic fluid
Creators: name: Balakin, Alexander B.
name: Ilin, Alexei S.
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We establish the nonlocal generalization of the Israel-Stewart model for the relativistic causal thermodynamics of the cosmic fluid, which evolves in the homogeneous isotropic Universe. Based on the second law of thermodynamics we derive the integro-differential master equation for the nonequilibrium pressure scalar and reduce it to the differential equation of the second order in time derivatives. We show that this master equation can be considered as the relativistic analog of the Burgers equation, which is known in the classical theory of viscoelasticity. We obtain the nonlinear key equation, which contains the energy density scalar only, and analyze two exact solutions of the model. The effective temperature is considered to be associated with the barotropic equation of state of the cosmic fluid.
description: 10 pages, 2 figures, revised version published in Phys.Lett.B
Local home bias: Theory and new empirical evidence from Italy
Creators: name: Baschieri, Giulia <1984>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2012
Subjects: SECS-P/09 Finanza aziendale

description: This thesis examines the literature on local home bias, i.e. investor preference towards geographically nearby stocks, and investigates the role of firm’s visibility, profitability, and opacity in explaining such behavior. While firm’s visibility is expected to proxy for the behavioral root originating such a preference, firm’s profitability and opacity are expected to capture the informational one. I find that less visible, and more profitable and opaque firms, conditionally to the demand, benefit from being headquartered in regions characterized by a scarcity of listed firms (local supply of stocks). Specifically, research estimates suggest that firms headquartered in regions with a poor supply of stocks would be worth i) 11 percent more if non-visible, non-profitable and non-opaque; ii) 16 percent more if profitable; and iii) 28 percent more if both profitable and opaque. Overall, as these features are able to explain most, albeit not all, of the local home bias effect, I reasonably argue and then assess that most of the preference for local is determined by a successful attempt to exploit local information advantage (60 percent), while the rest is determined by a mere (irrational) feeling of familiarity with the local firm (40 percent). Several and significant methodological, theoretical, and practical implications come out.
An investigation of the regulation of reproductive development in pink salmon (Oncorhynchus gorbusha) in relation to the initiation of an off-year pink salmon run
Creators: name: MacKinnon, Colin N.
Publisher: name: University of British Columbia
Year: 2010

description: This study was undertaken to determine whether gonads of pink salmon (Oncorhynchus gorbuscha) could be stimulated by pelleted or injected salmon gonadotropin to reproductive maturity one year earlier than normal. This procedure, if successful, might be used in attempting to populate an "off" year cycle of pink salmon. In juvenile male pink salmon complete maturity was attained by September in the year of hatching with both pellet implantation (1x/3 weeks) and injection (thrice weekly) of 1.0 micrograms of chinook salmon (Oncorhynchus tshawytscha) gonadotropin per gram body weight. Time of onset of mitotic division of spermatogonia and rate of spermatogenesis were accelerated in the precociously mature testes. Similar doses of salmon gonadotropin injected at longer time intervals (1x/week, and 1x/2 weeks) resulted in a slower maturation. In females, acceleration of maturation was achieved in immature pink salmon by injection and pellet implantation of salmon gonadotropin. The primary yolk vesicle stage was achieved after 4 months of treatment with thrice weekly injections and 1x/3 week pellet implantations of 1.0 μg/gm body weight of salmon gonadotropin. Similar doses of salmon gonadotropin injected at longer time intervals (1x/week and 1x/2 weeks) resulted in a reduction in the rate of maturation. Large numbers of preovulatory corpora atretica were observed in all treated fish. The knowledge developed by this research formed part of a large scale co-operative program with two objectives. The pragmatic objective is to develop an "off" year pink salmon spawning population in Bear River which has no spawners in odd-numbered years. The scientific objective is to assess the value of adding "home stream" genetic material to the transplanted embryos and to evaluate two experimental techniques as to their effectiveness in providing "home stream" genes to the transplanted population. The approach was to fertilize eggs taken from fish of another river (Glendale River) with 1) spermatozoa from precocious Bear River males, 2) cryopreserved spermatozoa from Bear River males, and 3) spermatozoa from Glendale River males (control transplant group). The fertilization rate among eggs of the precocious Bear River male x donor Glendale female group was equal to the control group (Glendale River male x Glendale River female) and twice that of the cryopreserved Bear River male x Glendale female transplant group. The control group exhibited a higher developmental index (K[sub D]) and migrated about 6 days earlier than the other two groups which had 50% of their genetic complement from the Bear River stock.
Effects of ambient temperature on cardiovascular regulation during sleep in hypocretin-deficient narcoleptic mice
Creators: name: Lo Martire, Viviana Carmen <1984>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2012
Subjects: BIO/09 Fisiologia

description: Hypocretin 1 and 2 (HCRT, also called Orexin A and B) are neuropeptides released by neurons in the lateral hypothalamus. HCRT neurons widely project to the entire neuroaxis. HCRT neurons have been reported to participate in various hypothalamic physiological processes including cardiovascular functions, wake-sleep cycle, and they may also influence metabolic rate and the regulation of  body temperature. HCRT neurons are lost in narcolepsy, a rare neurological disorder, characterized by excessive daytime sleepiness, cataplexy, sleep fragmentation and occurrence of sleep-onset rapid-eye-movement episodes.
We investigated whether HCRT neurons mediate the sleep-dependent cardiovascular adaptations to changes in ambient temperature (Ta). HCRT-ataxin3 transgenic mice with genetic ablation of HCRT neurons (n = 11) and wild-type controls (n = 12) were instrumented with electrodes for sleep scoring and a telemetric blood pressure (BP) transducer (DSI, Inc.). Simultaneous sleep and BP recordings were performed on mice undisturbed and freely-behaving at 20 °C, 25 °C, and 30 °C for 48 hours at each Ta. Analysis of variance of BP indicated a significance of the main effects of wake-sleep state and Ta, their interaction effect, and the wake-sleep state x mouse strain interaction effect. BP increased with decreasing Ta. This effect of Ta on BP was significantly lower in rapid-eye-movement sleep (REMS) than either in non-rapid-eye-movement sleep (NREMS) or wakefulness regardless of the mouse strain. BP was higher in wakefulness than either in NREMS or REMS. This effect of sleep on BP was significantly reduced in mice lacking HCRT neurons at each Ta, particularly during REMS. These data suggest that HCRT neurons play a critical role in mediating the effects of sleep but not those of Ta on BP in mice. HCRT neurons may thus be part of the central neural pathways which mediate the phenomenon of blood pressure dipping on passing from wakefulness to sleep.
EPSILON – Data Science for Social Good (DSSG) – Lecture Notes
Creators: name: Harz University of Applied Science
name: Vytautas Magnus University
name: Nova School of Business and Economics
name: University of Cyprus
name: Schaller, Philipp David
name: Berger, Theo
name: Ehmann, Suntje
name: Lehmann, Grit
name: Dommes, David
name: Apitz, Stefan
name: Rabe, Ellen
name: Reinboth, Christian
Publisher: name: Harz University
Year: 2025
Subjects: subject: Project management--Data processing
subject: Science--Data processing
subject: Artificial intelligence--Data processing
subject: Social sciences--Statistics--Data processing
subject: Machine learning
subject: Big data
subject: Big data--Social aspects

description: The EPSILON project - European Platform for Social Data Science Incubation, Learning, Operation and Network - aims to bridge the gap between data science and social good by fostering impactful, research-driven initiatives. Co-funded by the European Union, EPSILON provides open educational resources and best practices for leveraging data science methodologies in addressing societal challenges. This document synthesizes OER learning materials created by the EPSILON project team, structured across six modules, covering fundamental concepts in data science, ethical considerations, comparative analyses of "Data for Good" initiatives, and real-world case studies. Topics range from big data processing workflows and data science project life cycle management to best practices in data science volunteer management and data science applications in social sectors. The materials highlight the growing real-world impact of volunteer-driven, nonprofit data initiatives, with an emphasis on the importance of ethical responsibility, sustainable project design, and scientific collaboration. EPSILON was co-funded by the European Union (2021-1-DE01-KA220-HED-000029711). All views and opinions expressed are however those of the author(s) only and do not necessarily reflect those of the European Union or DAAD. Neither the European Union nor the granting authority can be held responsible for them.
title: GSICS quarterly. Volume 1, number 2 (2007)
Creators: name: Global Space-Based Inter-Calibration System Coordination Center,
Publisher: name: U.S. Department of Commerce, National Oceanic and Atmospheric Administration, National Environmental Satellite, Data, and Information Service, Center for Satellite Applications and Research
Year: 2007
Subjects: subject: Satellite meteorology
subject: Global Observing System (Meteorology)

description: GSICS Quarterly is a newsletter designed to communicate GSICS activities to all GSICS members and partners, as well as to satellite data users and policy makers
Concerning the Wave equation on Asymptotically Euclidean Manifolds
Creators: name: Sogge, Christopher D.
name: Wang, Chengbo
Publisher: name: arXiv
Year: 2009
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35L70, 35B40

description: We obtain KSS, Strichartz and certain weighted Strichartz estimate for the wave equation on $(\R^d, \mathfrak{g})$, $d \geq 3$, when metric $\mathfrak{g}$ is non-trapping and approaches the Euclidean metric like $ x ^{- ρ}$ with $ρ>0$. Using the KSS estimate, we prove almost global existence for quadratically semilinear wave equations with small initial data for $ρ> 1$ and $d=3$. Also, we establish the Strauss conjecture when the metric is radial with $ρ>0$ for $d= 3$.
description: Final version. To appear in Journal d'Analyse Mathematique
Circularly polarized resonant soft x-ray diffraction study of helical magnetism in hexaferrite
Creators: name: Mulders, A M
name: Lawrence, S M
name: Princep, A J
name: Staub, U
name: Bodenthin, Y
name: Garcia-Fernandez, M
name: Garganourakis, M
name: Hester, J
name: Macquart, R
name: Ling, C D
Publisher: name: arXiv
Year: 2009
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Magnetic spiral structures can exhibit ferroelectric moments as recently demonstrated in various multiferroic materials. In such cases the helicity of the magnetic spiral is directly correlated with the direction of the ferroelectric moment and measurement of the helicity of magnetic structures is of current interest. Soft x-ray resonant diffraction is particularly advantageous because it combines element selectivity with a large magnetic cross-section. We calculate the polarization dependence of the resonant magnetic x-ray cross-section (electric dipole transition) for the basal plane magnetic spiral in hexaferrite Ba0.8Sr1.2Zn2Fe12O22 and deduce its domain population using circular polarized incident radiation. We demonstrate there is a direct correlation between the diffracted radiation and the helicity of the magnetic spiral.
description: 4 pages, 4 figures
An Energy Consumption Model for Electrical Vehicle Networks via Extended Federated-learning
Creators: name: Zhang, Shiliang
Publisher: name: arXiv
Year: 2021
Subjects: subject: Systems and Control (eess.SY)
subject: Machine Learning (cs.LG)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Electrical vehicle (EV) raises to promote an eco-sustainable society. Nevertheless, the "range anxiety" of EV hinders its wider acceptance among customers. This paper proposes a novel solution to range anxiety based on a federated-learning model, which is capable of estimating battery consumption and providing energy-efficient route planning for vehicle networks. Specifically, the new approach extends the federated-learning structure with two components: anomaly detection and sharing policy. The first component identifies preventing factors in model learning, while the second component offers guidelines for information sharing amongst vehicle networks when the sharing is necessary to preserve learning efficiency. The two components collaborate to enhance learning robustness against data heterogeneities in networks. Numerical experiments are conducted, and the results show that compared with considered solutions, the proposed approach could provide higher accuracy of battery-consumption estimation for vehicles under heterogeneous data distributions, without increasing the time complexity or transmitting raw data among vehicle networks.
BeppoSAX Observations of the Power and Energy Spectral Evolution in the Black Hole Candidate XTE J1650-500
Creators: name: Montanari, Enrico
name: Titarchuk, Lev
name: Frontera, Filippo
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We study the time variability and spectral evolution of the Black Hole Candidate source XTE J1650-500 using the BeppoSax wide energy range (0.12-200 keV) observations performed during the 2001 X-ray outburst. The source evolves from a low/hard state (LHS) toward a high/soft state (HSS). In all states the emergent photon spectrum is described by the sum of Comptonization and soft (disk) blackbody components. In the LHS, the Comptonization component dominates in the resulting spectrum. On the other hand, during the HSS the soft (disk) component is already dominant. In this state the Comptonization part of the spectrum is much softer than that in the LHS (photon index is ~ 2.4 in the HSS vs. that is ~1.7 in the LHS). In the BeppoSAX data we find a strong signature of the index saturation with the mass accretion rate which can be considered as an observational evidence of the converging flow (black hole) in XTE J1650-500. We derive power spectra (PS) of the source time variability in different spectral states as a function of energy band. When the source undergoes a transition to softer states, the PS as a whole is shifted to higher frequencies which can be interpreted as a contraction of the Compton cloud during hard-soft spectral evolution. It is worthwhile to emphasize a detection of a strong low-frequency red noise component in the HSS PS which can be considered a signature of the presence of the strong extended disk in the HSS. Also as a result of our data analysis, we find a very weak sign of K_alpha line appearance in these BeppoSAX data. This finding does not confirm previous claims by Miniutti et al. on the presence of a broad and strongly relativistic iron emission line in this particular set of the BeppoSAX data.
description: 31 pages, 10 figures, accepted for publication in the ApJ