cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
High Mobility Free-Standing InSb Nanoflags Grown On InP Nanowire Stems For Quantum Devices
Creators: name: Verma, Isha
name: Salimian, Sedighe
name: Zannier, Valentina
name: Heun, Stefan
name: Rossi, Francesca
name: Ercolani, Daniele
name: Beltram, Fabio
name: Sorba, Lucia
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: High quality heteroepitaxial two-dimensional (2D) InSb layers are very difficult to realize owing to the large lattice mismatch with other widespread semiconductor substrates. A way around this problem is to grow free-standing 2D InSb nanostructures on nanowire (NW) stems, thanks to the capability of NWs to efficiently relax elastic strain along the sidewalls when lattice-mismatched semiconductor systems are integrated. In this work, we optimize the morphology of free-standing 2D InSb nanoflags (NFs). In particular, robust NW stems, optimized growth parameters, and the use of reflection high-energy electron diffraction (RHEED), to precisely orient the substrate for preferential growth, are implemented to increase the lateral size of the 2D InSb NFs. Transmission electron microscopy (TEM) analysis of these NFs reveals defect-free zinc blend crystal structure, stoichiometric composition, and relaxed lattice parameters. The resulting NFs are large enough to fabricate Hall-bar contacts with suitable length-to-width ratio enabling precise electrical characterization. An electron mobility of ~29,500 cm2/Vs is measured, which is the highest value reported for free-standing 2D InSb nanostrutures in literature. We envision the use of 2D InSb NFs for fabrication of advanced quantum devices.
description: http://hdl.handle.net/11384/105250
Unveiling the internal structure of Hercules supercluster
Creators: name: Monteiro-Oliveira, R.
name: Morell, D. F.
name: Sampaio, V. M.
name: Ribeiro, A. L. B.
name: de Carvalho, R. R.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We have investigated the structure of the Hercules supercluster (SCL160) based on data originally extracted from the Sloan Digital Sky Survey SDSS-DR7. We have traced the mass distribution in the field through the numerical density-weighted by the $r^\prime$-luminosity of the galaxies and classified them based on their spatial position and redshift. This has allowed us not only to address the kinematics of the supercluster as a whole, but also the internal kinematic of each cluster, which was no further explored before. We have confirmed that the Hercules supercluster is composed of the galaxy clusters A2147, A2151, and A2152. A2151 consists of five subclusters, A2147 on two and A2152 on at least two. They form the heart of the Hercules supercluster. We also have found two other gravitationally bond clusters, increasing, therefore, the known members of the supercluster. We have estimated a total mass of $2.1\pm0.2 \times 10^{15}$ M$_\odot$ for the Hercules supercluster. To determine the dynamical masses in this work, we have resorted to the $M_{200}-σ$ scaling relation and the caustic technique. Comparing both methods with simulated data of bimodal merging clusters, we found the caustic, as well as the $σ$-based masses, are biased through the merger age, showing a boost just after the pericentric passage. This is not in line with the principle of the caustic method that affirms it is not depending on the cluster dynamical state.
description: 20 pages, 11 figures, 7 tables - Accepted for publication in MNRAS
Caso clinico: amnesia dissociativa in paziente con trauma, ipoplasia congenita dell'ippocampo, assottigliamento del corpo calloso e ampliamento dei ventricoli laterali
Creators: name: Alessandra, Martinelli
name: Ruggeri Mirella
Publisher: name: Zenodo
Year: 2017

description: Presentiamo il caso clinico di una donna marocchina di 38 anni con verosimili sintomi dissociativi, tra cui un’amnesia retrograda autobiografica in anamnesi psichiatrica muta. Una RMI ha mostrato la presenza di un’ipoplasia congenita dell’ippocampo, un assottigliamento del corpo calloso e un ampliamento dei ventricoli laterali. È noto il ruolo critico del sistema limbico, comprese le strutture ippocampali, nella memoria autobiografica ed è conosciuta l’importanza del corpo calloso nell’interazione tra le strutture emisferiche. L’amnesia retrograda autobiografica potrebbe originare da un’anomalia nella sincronizzazione durante il processo di recupero tra l’emisfero destro e l’emisfero sinistro. Molte strutture del cervello chiave per la memoria autobiografica sono state identificate come sensibili all’esposizione a esperienze stressanti e/o traumatiche (amigdala, ippocampo, corteccia prefrontale, specifici tratti della sostanza bianca). Gli effetti dello stress su queste aree dipendono dalla loro vulnerabilità, dalla grandezza della cascata neurotossica (cortisolo), dallo stadio dello sviluppo o di declino delle strutture stesse. Un’ampia letteratura mostra una correlazione tra esperienze traumatiche e sintomi dissociativi. In molti casi l’amnesia dissociativa si verifica in pazienti che presentano un background di immigrazione. In caso di immigrazione l’amnesia potrebbe essere l’effetto dello sforzo compiuto dal corpo per adattarsi alle situazioni psicosociali stressanti. In questo poster illustreremo la correlazione tra l’amnesia dissociativa, il trauma e le alterazioni morfologiche cerebrali evidenziate nella paziente.
Inter-layer Josephson coupling in stripe-ordered superconducting cuprates
Creators: name: Wollny, Alexander
name: Vojta, Matthias
Publisher: name: arXiv
Year: 2009
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Motivated by experiments on LBCO-1/8 which suggest that stripe order co-exists with two-dimensional pairing without inter-layer phase coherence over an extended range of temperatures, we determine the inter-layer Josephson coupling in the presence of stripe order. We employ a mean-field description of bond-centered stripes, with a zero-momentum superconducting condensate and alternating stripe directions pinned by the low-temperature tetragonal (LTT) lattice structure. We show that the Fermi-surface reconstruction arising from strong stripe order can suppress the Josephson coupling between adjacent layers by more than an order of magnitude.
description: 4 pages, 4 figs
Romantic Relationships in Times of the Covid-19 Pandemic (RelCov2)
Creators: name: Weber, Marcel
name: Friese, Malte
Publisher: name: Open Science Framework
Year: 2023
Subjects: subject: Social and Behavioral Sciences
subject: coronavirus
subject: Covid-19
subject: Romantic Relationships

description: Study designed to tackle the following research questions: 1. Have central relationship outcomes changed since the start of the Covid-19 pandemic? 2. What dispositional and situational factors account for the variability of these changes?
Bootstrap Your Object Detector via Mixed Training
Creators: name: Xu, Mengde
name: Zhang, Zheng
name: Wei, Fangyun
name: Lin, Yutong
name: Cao, Yue
name: Lin, Stephen
name: Hu, Han
name: Bai, Xiang
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: We introduce MixTraining, a new training paradigm for object detection that can improve the performance of existing detectors for free. MixTraining enhances data augmentation by utilizing augmentations of different strengths while excluding the strong augmentations of certain training samples that may be detrimental to training. In addition, it addresses localization noise and missing labels in human annotations by incorporating pseudo boxes that can compensate for these errors. Both of these MixTraining capabilities are made possible through bootstrapping on the detector, which can be used to predict the difficulty of training on a strong augmentation, as well as to generate reliable pseudo boxes thanks to the robustness of neural networks to labeling error. MixTraining is found to bring consistent improvements across various detectors on the COCO dataset. In particular, the performance of Faster R-CNN \cite{ren2015faster} with a ResNet-50 \cite{he2016deep} backbone is improved from 41.7 mAP to 44.0 mAP, and the accuracy of Cascade-RCNN \cite{cai2018cascade} with a Swin-Small \cite{liu2021swin} backbone is raised from 50.9 mAP to 52.8 mAP. The code and models will be made publicly available at \url{https://github.com/MendelXu/MixTraining}.
Astrophotonic spectroscopy: defining the potential advantage
Creators: name: Allington-Smith, Jeremy
name: Bland-Hawthorn, Joss
Publisher: name: arXiv
Year: 2009
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: A photonic spectrograph can be much smaller than a conventional spectrograph with the same resolving power. Individual devices can be integrated with optical fibres to improve the multiplex gain in astronomical spectroscopy. Although experimental devices have been tested, the parameter space where integrated photonic spectrographs give a significant advantage over traditional methods has not been defined. This paper gives an overview of the theory with verification by direct simulation using Fresnel propagation and quantifies the benefit for representative spectroscopic capabilities. We thereby confirm the advantage of photonic spectrographs, especially to the next generation of Extremely Large Telescopes, and therefore conclude that these devices may be important for the future development of astronomical instrumentation.
description: Revised version submitted to MNRAS
Unlike Lennard-Jones Parameters for Vapor-Liquid Equilibria
Creators: name: Schnabel, T.
name: Vrabec, J.
name: Hasse, H.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: The influence of the unlike Lennard-Jones (LJ) parameters on vapor-liquid equilibria of mixtures is investigated and the performance of eleven combining rules is assessed. In the first part of the work, the influence of the unlike LJ size and energy parameter on vapor pressure, bubble density and dew point composition is systematically studied for the mixtures CO+$\rm C_2H_6$ and $\rm N_2$ + $\rm C_3H_6$, respectively. It is found that mixture vapor pressure depends strongly both on the size and the energy parameter whereas the bubble density depends mostly on the size parameter and the dew point composition is rather insensitive to both parameters. In preceding work, unlike LJ parameters were adjusted to experimental binary vapor-liquid equilibria for 44 real mixtures. On the basis of these results, in the second part of the work eleven combining rules are assessed regarding their predictive power. A comparison with the adjusted unlike LJ parameters determined from the fit shows that none of the eleven combining rules yields appropriate parameters in general. To obtain an accurate mixture model, the unlike dispersive interaction should therefore be adjusted to experimental binary data. The results from the present work indicate that it is sufficient to use the Lorenz rule for the unlike LJ size parameter and to fit the unlike LJ energy parameter to the vapor pressure.
The de Broglie-Bohm Quantum Theory and its Application to Quantum Cosmology
Creators: name: Pinto-Neto, Nelson
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We review the de Broglie-Bohm quantum theory. It is an alternative description of quantum phenomena in accordance with all the quantum experiments already performed. Essentially, it is a dynamical theory about objectively real trajectories in the configuration space of the physical system under investigation. Hence, it is not necessarily probabilistic, and it dispenses with the collapse postulate, making it suitable to be applied to cosmology. The emerging cosmological models are usually free of singularities, with a bounce connecting a contracting era with an expanding phase, which we are now observing. A theory of cosmological perturbations can also be constructed under this framework, which can be successfully confronted with current observations, and can complement inflation or even be an alternative to it.
description: 34 pages, 9 figures
The ramp-up of interstellar medium enrichment at z>4
Creators: name: Franco, M.
name: Coppin, K. E. K.
name: Geach, J. E.
name: Kobayashi, C.
name: Chapman, S. C.
name: Yang, C.
name: González-Alfonso, E.
name: Spilker, J. S.
name: Cooray, A.
name: Michałowski, M. J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Fluorine is one of the most interesting elements for nuclear and stellar astrophysics. Fluorine abundance was first measured for stars other than the Sun in 1992, then for a handful metal-poor stars, which are likely to have formed in the early Universe. The main production sites of fluorine are under debate and include asymptotic giant branch (AGB) stars, $ν$-process in core-collapse supernovae, and Wolf-Rayet (WR) stars. Due to the difference in the mass and lifetime of progenitor stars, high redshift observations of fluorine can help constrain the mechanism of fluorine production in massive galaxies. Here, we report the detection of HF (S/N = 8) in absorption in a gravitationally lensed dusty star-forming galaxy at redshift z=4.4 with $N_{\rm HF}$/$N_{\rm{H_2}}$ as high as $\sim2\times10^{-9}$, indicating a very quick ramp-up of the chemical enrichment in this high-z galaxy. At z=4.4, AGB stars of a few solar masses are very unlikely to dominate the enrichment. Instead, we show that WR stars are required to produce the observed fluorine abundance at this time, with other production mechanisms becoming important at later times. These observations therefore provide an insight into the underlying processes driving the `ramp-up' phase of chemical enrichment alongside rapid stellar mass assembly in a young massive galaxy.
description: 21 pages, 4 figures, published in Nature Astronomy
Gas-Rich Mergers in LCDM: Disk Survivability and the Baryonic Assembly of Galaxies
Creators: name: Stewart, Kyle R.
name: Bullock, James S.
name: Wechsler, Risa H.
name: Maller, Ariyeh H.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We use N-body simulations and observationally-normalized relations between dark matter halo mass, stellar mass, and cold gas mass to derive robust, arguably inevitable expectations about the baryonic content of major mergers out to redshift z~2. First, we find that the majority of major mergers (m/M > 0.3) experienced by Milky Way size dark matter halos should have been gas-rich, and that gas-rich mergers are increasingly common at high redshift. Though the frequency of major mergers into galaxy halos in our simulations greatly exceeds the observed late-type galaxy fraction, the frequency of gas-poor major mergers is consistent with the observed fraction of spheroid-dominated galaxies across the halo mass range M_DM ~ 10^11-10^13 Msun. These results lend support to the conjecture that mergers with high baryonic gas fractions play an important role in building and/or preserving disk galaxies in the universe. Also, we find that the overall fraction of a galaxy's cold baryons deposited directly via major mergers is substantial. Approximately ~30% of the cold baryonic material in M_star ~ 10^10 Msun$ (M_DM ~ 10^11.5 Msun) galaxies is accreted as cold gas in major mergers. For more massive galaxies with M_star ~ 10^11 Msun (M_DM ~ 10^13 Msun) the fraction of baryons amassed in mergers is even higher, ~50%, but most of these accreted baryons are delivered directly in the form of stars. This baryonic mass deposition is almost unavoidable, and provides a limit on the fraction of a galaxy's cold baryons that can originate in cold flows or from hot halo cooling. (Abridged)
description: 11 pages, 4 figures. v2 updated to match published version; expanded comparison of model to observations; expanded discussion of cumulative gas accretion due to mergers. Primary results and conclusions unchanged
Do AGN triggering mechanisms vary with radio power? II. The importance of mergers as a function of radio power and optical luminosity
Creators: name: Pierce, J. C. S.
name: Tadhunter, C. N.
name: Gordon, Y.
name: Almeida, C. Ramos
name: Ellison, S. L.
name: O'Dea, C.
name: Grimmett, L.
name: Makrygianni, L.
name: Bessiere, P. S.
name: Girón, P. Doña
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Investigation of the triggering mechanisms of radio AGN is important for improving our general understanding of galaxy evolution. In the first paper in this series, detailed morphological analysis of high-excitation radio galaxies (HERGs) with intermediate radio powers suggested that the importance of triggering via galaxy mergers and interactions increases strongly with AGN radio power and weakly with optical emission-line luminosity. Here, we use an online classification interface to expand our morphological analysis to a much larger sample of 155 active galaxies (3CR radio galaxies, radio-intermediate HERGs and Type 2 quasars) that covers a broad range in both 1.4 GHz radio power and [OIII]$λ$5007 emission-line luminosity. All active galaxy samples are found to exhibit excesses in their rates of morphological disturbance relative to 378 stellar-mass- and redshift-matched non-active control galaxies classified randomly and blindly alongside them. These excesses are highest for the 3CR HERGs (4.7$σ$) and Type 2 quasar hosts (3.7$σ$), supporting the idea that galaxy mergers provide the dominant triggering mechanism for these subgroups. When the full active galaxy sample is considered, there is clear evidence to suggest that the enhancement in the rate of disturbance relative to the controls increases strongly with [OIII]$λ$5007 emission-line luminosity but not with 1.4 GHz radio power. Evidence that the dominant AGN host types change from early-type galaxies at high radio powers to late-type galaxies at low radio powers is also found, suggesting that triggering by secular, disk-based processes holds more importance for lower-power radio AGN.
description: Accepted for publication in MNRAS. 21 pages, 11 figures. Supplementary information will be available online with the published journal article (also available from the corresponding author by request)
Time resolved spectral behavior of bright BATSE precursors
Creators: name: Burlon, D.
name: Ghirlanda, G.
name: Ghisellini, G.
name: Greiner, J.
name: Celotti, A.
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Aims: Gamma Ray Bursts (GRBs) are sometimes preceded by dimmer emission episodes, called "precursors", whose nature is still a puzzle: they could either have the same origin as the main emission episode or they could be due to another mechanism. We investigate if precursors have some spectral distinctive feature with respect to the main GRB episodes. Methods: To this aim we compare the spectral evolution of the precursor with that of the main GRB event. We also study if and how the spectral parameters, and in particular the peak of the vFv spectrum of time resolved spectra, correlates with the flux. This allows us to test if the spectra of the precursor and of the main event belong to the same correlation (if any). We searched GRBs with precursor activity in the complete sample of 2704 bursts detected by BATSE finding that 12% of GRBs have one or more precursors. Among these we considered the bursts with time resolved spectral analysis performed by Kaneko et al. 2006, selecting those having at least two time resolved spectra for the precursor. Results: We find that precursors and main events have very similar spectral properties. The spectral evolution within precursors has similar trends as the spectral evolution observed in the subsequent peaks. Also the typical spectral parameters of the precursors are similar to those of the main GRB events. Moreover, in several cases we find that within the precursors the peak energy of the spectrum is correlated with the flux similarly to what happens in the main GRB event. This strongly favors models in which the precursor is due to the same fireball physics of the main emission episodes.
description: 16 pages, 41 figures. Accepted in Astronomy and Astrophysics
A transformational study of Japanese reflexivization
Creators: name: Matsuda, Hiroshi
Publisher: name: University of British Columbia
Year: 2010

description: Japanese reflexivization has only recently come to linguists' attention in the framework of Chomsky's linguistic model, the transformational generative grammar. The present thesis, also being based on this newly developed model, is aimed at investigating the nature of the Japanese reflexive system. In effect, the investigation is to become a procedure whereby inconsistencies of the current hypothetical treatments of Japanese reflexivization can be excluded so that a revised proposal can be presented. The discussion toward a revised proposal is designed to pass through the two phases. First, in Chapter I, by examining Oyakawa's hypothesis, the discussion will focus on the structural positions of the antecedent and its reflexive, which will outline the basic property of Japanese reflexivization. It is also claimed that Langacker's two notions, 'command' and 'precede', are crucial in accounting for the question of the directionality, Forward and Backward reflexivization. The result of the examination will be presented as the revised proposal (I) to conclude the chapter. Next, in Chapter II, the second phase of the revision will result from the examination of Akatuka's treatment of Japanese reflexivization. The examination will eventually suggest that the ill-formedness treated by Akatuka stems rather from the inadequacy of what has been allegedly treated as a Japanese reflexive pronoun than from a syntactic reason. Consequently, the alternative to replace the alleged reflexive form will be presented with syntactic evidence in which the existence of the non-human reflexive pronoun is to be pointed out as well. The conclusion to the chapter will be presented as the revised proposal (II) showing that the coreferentiality between the antecedent and the genuine reflexive is really a phenomenon observable only in a simplex sentence. In Chapter III, some problems left unsolved will be discussed. Having shown that the possible solutions to the problems are not far from being ad hoc so long as we adhere to the standard transformational approach, the alternative solutions will be looked into in the framework of Jackendoff's Interpretive Theory in which, unlike the standard transformational theory, the antecedent-reflexive relation is to be accounted for in the semantic component rather than the syntactic component. This chapter will be concluded by showing that the interpretive approach is equipped with more explanatory power than the standard transformational approach. All the information obtained through the revision in the preceding chapters will play a crucial role in formulating Japanese reflexivization by the interpretive approach. In Chapter IV, the conclusions to the preceding three chapters are to be recapitulated so that a schematic representation of Japanese reflexivization is presented as both the conclusion to the present thesis and a tentative conclusion to the issue of Japanese reflexivization.
Foreground influence on primordial non-Gaussianity estimates: needlet analysis of WMAP 5-year data
Creators: name: Cabella, P.
name: Pietrobon, D.
name: Veneziani, M.
name: Balbi, A.
name: Crittenden, R.
name: de Gasperis, G.
name: Quercellini, C.
name: Vittorio, N.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We constrain the amplitude of primordial non-Gaussianity in the CMB data taking into account the presence of foreground residuals in the maps. We generalise the needlet bispectrum estimator marginalizing over the amplitudes of thermal dust, free-free and synchrotron templates. We apply our procedure to WMAP 5 year data, finding fNL= 38\pm 47 (1 σ), while the analysis without marginalization provides fNL= 35\pm 42. Splitting the marginalization over each foreground separately, we found that the estimates of fNL are positively cross correlated of 17%, 12% with the dust and synchrotron respectively, while a negative cross correlation of about -10% is found for the free-free component.
description: Submitted to MNRAS
Statistical methods for analysis and processing of
medical ultrasound: applications to segmentation and restoration
Creators: name: Alessandrini, Martino <1983>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2011
Subjects: ING-INF/01 Elettronica

description: In this thesis two major topics inherent with medical ultrasound images are addressed: deconvolution and segmentation. In the first case a deconvolution algorithm is described allowing statistically consistent maximum a posteriori estimates of the tissue reflectivity to be restored. These estimates are proven to provide a reliable source of information for achieving an accurate characterization of biological tissues through the ultrasound echo. The second topic involves the definition of a semi automatic algorithm for myocardium segmentation in 2D echocardiographic images. The results show that the proposed method can reduce inter- and intra observer variability in myocardial contours delineation and is feasible and accurate even on clinical data.
Additional file 1 of Identification of a three-long noncoding RNA prognostic model involved competitive endogenous RNA in kidney renal clear cell carcinoma
Creators: name: Zhang, Di
name: Zeng, Song
name: Hu, Xiaopeng
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Biological Sciences not elsewhere classified
subject: Mathematical Sciences not elsewhere classified
subject: Developmental Biology
subject: Marine Biology
subject: Cancer
subject: Hematology

description: Additional file 1: Table S1. List of primers used for RT-PCR. Table S2. Differentially expressed lncRNAs, miRNAs, and mRNAs between KIRC samples and adjacent normal samples. Table S3. The subcellular distribution of lncRNAs in the ceRNA network. Table S4. The interactions of the ceRNA network in KIRC. Table S5. Seventeen lncRNAs associated with overall survival in KIRC. Table S6. The results of GSEA. Table S7. The potential binding sites of three lncRNAs (LINC00443, LINC00460 and MIAT) on the targeted DEmiRNAs in the ceRNA network.
Contribution of Narrative Methods to Adversarial Growth
Creators: name: Blackie, Laura
Publisher: name: Open Science Framework
Year: 2023
Subjects: subject: Social and Behavioral Sciences

description: In this pre-registration, we propose two studies that draw on methods from research on narrative identity (McAdams & McLean, 2013) to examine the extent to which the collection of individuals’ personal narratives of challenging and adverse experiences can broaden our understanding of adversarial growth. Specifically, we explore the extent to which open-ended narratives allow for unique expressions of adversarial growth, and the extent to which adversarial growth coded through the narrative method predicts well-being and mental health above and beyond standard questionnaire assessments. This pre-registration is being archived prior to undertaking any data processing, data coding or data analysis on this project.
Innervazione articolare della spalla e del ginocchio nel cane e modificazioni in corso di osteoartrite
Creators: name: Nenzi, Alice <1981>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2011
Subjects: VET/01 Anatomia degli animali domestici

description: L’osteoartrite (OA) rappresenta un gruppo di patologie a carico delle articolazioni che si stima colpisca più del 20% dei cani con età superiore a un anno. Si tratta di una condizione dove entrano in gioco fattori biomeccanici e biochimici, che si esprime clinicamente con zoppia e dolore. Le ricerche effettuate negli ultimi decenni hanno dimostrato il coinvolgimento dell’innervazione nocicettiva e simpatica nell’insorgenza e nel mantenimento del dolore e dell’infiammazione che caratterizzano l’OA. In questa, infatti, svolgono un ruolo cruciale i neuropeptidi, quali la sostanza P (SP) ed il peptide correlato al gene della calcitonina (CGRP), ed i neuromediatori simpatici liberati alla periferia rispettivamente dalle fibre nocicettive e dalle fibre simpatiche postgangliari. Col presente lavoro ci si è posti l’obiettivo di definire il tipo ed il numero di fibre nervose che innervano l’articolazione della spalla e del ginocchio di cane in soggetti esenti da patologia articolare ed affetti da osteoartrite. Campioni di legamenti e capsula articolare della spalla e della parte craniolaterale della capsula articolare del ginocchio sono stati sottoposto a reazione di doppia immunofluorescenza indiretta volta alla identificazione del numero complessivo di fibre nervose presenti e della percentuale di fibre SP, CGRP e simpatiche positive. I risultati testimoniano come in corso di OA nel cane venga ad alterarsi l’equilibrio tra innervazione sensitiva e simpatica. Infatti, lo studio quantitativo ha evidenziato che nei soggetti affetti da OA si assiste ad un incremento della percentuale di fibre SP positive e ad un decremento di quelle simpatiche. Si ritiene che l’integrità di questi due tipi d’innervazione sia necessaria per l’omeostasi tissutale e che un aumento delle fibre nocicettive e una riduzione di quelle simpatiche abbia un effetto proinfiammatorio e iperalgesico. È stata inoltre riscontrata una differente densità di fibre nervose a seconda del tipo di patologia considerata.
Detection of chirality-induced spin polarization over millimeters in polycrystalline bulk samples of chiral disilicides NbSi$_2$ and TaSi$_2$
Creators: name: Shishido, Hiroaki
name: Sakai, Rei
name: Hosaka, Yuta
name: Togawa, Yoshihiko
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: We report that spin polarization occurs over millimeters in polycrystalline bulk samples of chiral disilicide NbSi$_2$ and TaSi$_2$. As previously demonstrated in the experiments using single crystals of NbSi$_2$ and TaSi$_2$, electrical transport measurements allow detection of direct and inverse signals associated with the chirality-induced spin polarization even in the chiral polycrystals. The spin polarization signals also appear in nonlocal measurements, in which charge current flows only in the area millimeters away from the detection electrode. These data mean that the spin polarization phenomena occur regardless of the presence of crystalline grains in the polycrystals, indicating a robustness and resilience of the chirality-induced spin polarization. On the basis of the experimental data, we found that the sum rule holds for the spin transport signals. A distribution of handedness over the samples was determined on average in the polycrystals. While the mechanism of preserving the spin polarization over millimeters remains to be clarified, the present study may open up prospects of spin control and manipulation over macroscopic length scales using chiral materials.
description: 6 pages, 5 figures
Nodeless spin triplet superconducting gap in Sr2RuO4
Creators: name: Suderow, H.
name: Crespo, V.
name: Guillamon, I.
name: Vieira, S.
name: Servant, F.
name: Lejay, P.
name: Brison, J. P.
name: Flouquet, J.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We report on tunneling spectroscopy measurements using a Scanning Tunneling Microscope (STM) on the spin triplet superconductor Sr2RuO4. We find a negligible density of states close to the Fermi level and a fully opened gap with a value of $Δ$=0.28 meV, which disappears at T$_c$ = 1.5 K. $Δ$ is close to the result expected from weak coupling BCS theory ($Δ_0$=1.76kBT$_c$ = 0.229 meV). Odd parity superconductivity is associated with a fully isotropic gap without nodes over a significant part of the Fermi surface.
Parallel modeling of the electric field distribution in the brain
Creators: name: De Marco, Tommaso <1980>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2011
Subjects: ING-INF/01 Elettronica

description: The term "Brain Imaging" identi�es a set of techniques to analyze the structure and/or functional behavior of the brain in normal and/or pathological situations. These  techniques are largely used in the study of brain activity.
In addition to clinical usage, analysis of brain activity is gaining popularity in others recent �fields, i.e. Brain Computer Interfaces (BCI) and the study of cognitive processes. In this context, usage of classical solutions (e.g. f MRI, PET-CT) could be unfeasible, due to their low temporal resolution, high cost and limited portability. For these reasons alternative low cost techniques are object of research, typically based on simple recording hardware and on intensive data elaboration process. Typical examples are ElectroEncephaloGraphy (EEG) and Electrical Impedance Tomography (EIT), where electric potential at the patient's scalp is recorded by high impedance electrodes. In EEG potentials are directly generated from neuronal activity, while in EIT by the injection of small currents at the scalp. To retrieve meaningful insights on brain activity from measurements, EIT and EEG relies on detailed knowledge of the underlying electrical properties of the body. This is obtained from numerical models of the electric �field
distribution therein. The inhomogeneous and anisotropic electric properties of human tissues make accurate modeling and simulation very challenging, leading to a tradeo�ff between physical accuracy and technical feasibility,
which currently severely limits the capabilities of these techniques. Moreover elaboration of data recorded requires usage of regularization techniques computationally intensive, which influences the application with heavy temporal constraints (such as BCI).
This work focuses on the parallel implementation of a work-flow for EEG and EIT data processing. The resulting software is accelerated using multi-core GPUs, in order to provide solution in reasonable times and address requirements of real-time BCI systems, without over-simplifying the complexity and accuracy of the head models.
The genetic signature of Neolithic in Greece
Creators: name: Anagnostou, Paolo <1976>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2011
Subjects: BIO/08 Antropologia

description: The Neolithic is characterized by the transition from a subsistence economy, based on hunting and gathering, to one based on food producing. This important change was paralleled by one of the most significant demographic increase in the recent history of European populations. The earliest Neolithic sites in Europe are located in Greece. However, the debate regarding the colonization route followed by the Middle-eastern farmers is still open. Based on archaeological, archaeobotanical, craniometric and genetic data, two main hypotheses have been proposed. The first implies the maritime colonization of North-eastern Peloponnesus from Crete, whereas the second points to an island hopping route that finally brought migrants to Central Greece. To test these hypotheses using a genetic approach, 206 samples were collected from the two Greek regions proposed as the arrival point of the two routes (Korinthian district and Euboea). Expectations for each hypothesis were compared with empirical observations based on the analysis of 60 SNPs and 26 microsatellite loci of Y-chromosome and mitochondrial DNA hypervariable region I.  The analysis of Y-chromosome haplogroups revealed a strong genetic affinity of Euboea with Anatolian and Middle-eastern populations. The inferences of the time since population expansion suggests an earlier usage of agriculture in Euboea. Moreover, the haplogroup J2a-M410, supposed to be associated with the Neolithic transition, was observed at higher frequency and variance in Euboea showing, for both these parameters, a decreasing gradient moving from this area. The time since expansion estimates for J2a-M410 was found to be compatible with the Neolithic and slightly older in Euboea. The analysis of mtDNA resulted less informative. However, a higher genetic affinity of Euboea with Anatolian and Middle-eastern populations was confirmed. These results taken as a whole suggests that the most probable route followed by Neolithic farmers during the colonization of Greece was the island hopping route.
Affect in Solitude: Many Labs Preregistration 1
Creators: name: Adams, Mark
name: Weinstein, Netta
name: Foad, Colin
Publisher: name: Open Science Framework
Year: 2023
Subjects: subject: Social and Behavioral Sciences

description: This is the first preregistration of the Affect in Solitude: Many Labs project. In the attached document, we detail our overall methodological approach.
A Mid-Infrared Study of Directly-Imaged Planetary-Mass Companions using Archival Spitzer/IRAC Images
Creators: name: Martinez, Raquel A.
name: Kraus, Adam L.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The atmospheres and accretion disks of planetary-mass and substellar companions provide an unprecedented look into planet and moon formation processes, most notably the frequency and lifetime of circumplanetary disks. In our ongoing effort to leverage the extraordinary sensitivity of the Spitzer/Infrared Array Camera (IRAC) at 3.6, 4.5, 5.8, and 8.0 $μ$m to study wide planetary-mass and substellar companions near the diffraction limit, we present point-spread function (PSF) fitting photometry of archival Spitzer/IRAC images for nine stars (G0 to M4+M7) in nearby star-forming regions or stellar associations that host companions at separations of $ρ= 1.17^{\prime\prime}-12.33^{\prime\prime}$. We detect all system primaries in all four IRAC channels and recover eight low-mass companions in at least one IRAC channel for our sample, five of which have not been resolved previously in IRAC images. We measure non-photospheric $[3.6]-[8.0]$ colors for four of the system companions (DH Tau B, 2M0441 B, SR 12 c, ROXs 42B b), confirming or discovering the presence of circumstellar or circum(sub)stellar disks. We detect fluxes consistent with photospheric emission for four other companions (AB Pic b, CHXR 73 b, 1RXS J1609 b, HD 203030 b) that are unlikely to host disks. Combined with past detections of accretion or disk indicators, we determine the global disk frequency of young ($
description: 27 pages, 10 figures, Accepted to AJ
Model-free based control of a HIV/AIDS prevention model
Creators: name: Michel, Loïc
name: Silva, Cristiana J.
name: Torres, Delfim F. M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optimization and Control (math.OC)
subject: Populations and Evolution (q-bio.PE)
subject: FOS: Mathematics
subject: FOS: Biological sciences

description: Controlling an epidemiological model is often performed using optimal control theory techniques for which the solution depends on the equations of the control system, objective functional and possible state and/or control constraints. In this paper, we propose a model-free control approach based on an algorithm that operates in 'real-time' and drives the state solution according to a direct feedback on the state solution that is aimed to be minimized, and without knowing explicitly the equations of the control system. We consider a concrete epidemic problem of minimizing the number of HIV infected individuals, through the preventive measure pre-exposure prophylaxis (PrEP) given to susceptible individuals. The solutions must satisfy control and mixed state-control constraints that represent the limitations on PrEP implementation. Our model-free based control algorithm allows to close the loop between the number of infected individuals with HIV and the supply of PrEP medication 'in real time', in such manner that the number of infected individuals is asymptotically reduced and the number of individuals under PrEP medication is below a fixed constant value. We prove the efficiency of our approach and compare the model-free control solutions with the ones obtained using a classical optimal control approach via Pontryagin maximum principle. The performed numerical simulations allow us to conclude that the model-free based control strategy highlights new and interesting performances compared with the classical optimal control approach.
description: This is a preprint of a paper whose final and definite form is published open access by 'Mathematical Biosciences and Engineering' (ISSN: 1551-0018) at [https://www.aimspress.com/mbe/article/5926/special-articles]
Sistemi adesivi con applicazioni in campo biomedicale
Creators: name: Cordischi, Fabrizio <1982>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2011
Subjects: CHIM/04 Chimica industriale

description: Polymeric adhesives have been used for many applications like suture and embolization, instead of classic surgical methods or as for dental uses. 
In this work both subjects have been investigated and the results separated in two parts. 
In the first, new dentinal adhesives with different polymerizable groups (methacrylic or vinyl-ethereal) were synthesized. A low sensitivity to hydrolysis and equal or enhanced properties, compared to existing commercial products, were considered essentials. Moreover, these monomers need to polymerize by radical photopolymerization and functional groups of different characteristics were tested. All these products were characterized by microtensile bond strength test to determine the bonding strength between the adhesive and tooth. 
Concerning embolization, cyanoacrylates are nowadays the most-used adhesives in surgery. Thus, they must respond to several requirements. For instance, polymerization time and adhesive strength need to be low, to avoid diffusion of the products in the body and adhesion to the catheter. In order to overcome these problems we developed new cyanoacrylates, which practically instantly polymerize upon contact with blood but do not demonstrate strong adhesion to the catheter, thank to the presence of fluorine atoms, linked to the ester chain.
The synthesis of these products was carried out in several steps, such as the depolymerization of the corresponding oligomers at high temperature in acid conditions. 
Two types of adhesion strengths were determined. Bonding strength between  human veins and a microcatheter was determined in vitro by using  organic materials as the most realistic model. Another test, on two layers of skin, was conducted to verify the possible use of these new cyanoacrylates as a glue for sutures. 
As a conclusion, we were able to demonstrate that some of the prepared  monomers posses adhesive strength and polymerization time  lower than the commercial product Glubran2.
Recovering Stellar Population Properties and Redshifts from Broad-Band Photometry of Simulated Galaxies: Lessons for SED Modeling
Creators: name: Wuyts, Stijn
name: Franx, Marijn
name: Cox, Thomas J.
name: Hernquist, Lars
name: Hopkins, Philip F.
name: Robertson, Brant E.
name: van Dokkum, Pieter G.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present a detailed analysis of our ability to determine stellar masses, ages, reddening and extinction values, and star formation rates of high-redshift galaxies by modeling broad-band SEDs with stellar population synthesis. In order to do so, we computed synthetic optical-to-NIR SEDs for model galaxies taken from hydrodynamical merger simulations placed at redshifts 1.5 < z < 3. Viewed under different angles and during different evolutionary phases, the simulations represent a wide variety of galaxy types (disks, mergers, spheroids). We show that simulated galaxies span a wide range in SEDs and color, comparable to these of observed galaxies. In all star-forming phases, dust attenuation has a large effect on colors, SEDs, and fluxes. The broad-band SEDs were then fed to a standard SED modeling procedure and resulting stellar population parameters were compared to their true values. Disk galaxies generally show a decent median correspondence between the true and estimated mass and age, but suffer from large uncertainties. During the merger itself, we find larger offsets (e.g., log M_recovered - log M_true = -0.13^{+0.10}_{-0.14}). E(B-V) values are generally recovered well, but the estimated total visual absorption Av is consistently too low, increasingly so for larger optical depths. Since the largest optical depths occur during the phases of most intense star formation, it is for the highest SFRs that we find the largest underestimates. The masses, ages, E(B-V), Av, and SFR of merger remnants (spheroids) are very well reproduced. We discuss possible biases in SED modeling results caused by mismatch between the true and template star formation history, dust distribution, metallicity variations and AGN contribution.
description: Accepted for publication in the Astrophysical Journal, 24 pages, 19 figures
title: Journal of Data Science and Its Applications, Vol 4 No 1 (2021): Journal of Data Science and Its Applications
title: Journal of Data Science and Its Applications
titleType: AlternativeTitle
Creators: name: Journal Of Data Science And Its Applications
Publisher: name: Journal of Data Science and Its Applications
Year: 2021

description: This issue contains 5 articles with 10 authors from 3 Institutions (Politeknik Statistika STIS, Telkom University, Telkom Indonesia )
description: Analysis of Indonesian People's Sentiments About the Side Effects of the COVID-19 Vaccine on Twitter...1 - 10 Implementation of Enhance Confix Stripping Stemmer Algorithm for Multiclass Dataset Classification in News Text using K-Nearest Neighbor...11 - 17 Analysis Sentiment Aspect Level on Beauty Product Reviews Using Chi-Square and Naïve Bayes...18 - 30 Sentiment Analysis of Beauty Product Reviews Using the K-Nearest Neighbor (KNN) and TF-IDF Methods with Chi-Square Feature Selection...31 - 42 Multi Label Topic Classification for Hadith Bukhari in Indonesian Translation using Random Forest...43 - 47