cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
A classification theorem and a spectral sequence for a locally free sheaf cohomology of a supermanifold
Creators: name: Vishnyakova, E. G.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics

description: This paper is based on the paper "Locally free sheaves on complex supermanifolds" of A.L.Onishchik, E.G. Vishnyakova, where two classification theorems for locally free sheaves on supermanifolds were proved and a spectral sequence for a locally free sheaf of modules E was obtained. We consider another filtration of the locally free sheaf E, the corresponding classification theorem and the spectral sequence, which is more convenient in some cases. The methods, which we are using here, are similar to the methods of the paper mentioned above. The first spectral sequence of this kind was constructed by A.L. Onishchik for the tangent sheaf of a supermanifold. However, the spectral sequence considered in this paper is not a generalization of Onishchik's spectral sequence.
description: 8 pages
Exploring the Effects of Cellular Stress on Breast Cancer Metastasis
Creators: name: Lewis, Angela
Publisher: name: My University
Year: 2023
Subjects: subject: breast cancer
subject: furin
subject: PACE4
subject: metastasis
subject: molecular biology
subject: biology

description: Cancer is characterized by two major features. The first is uncontrolled cell proliferation and the second is metastasis, which is the main cause of cancer related deaths. The causes of uncontrolled cell growth have been studied thoroughly and consequently the underlying mechanisms are fairly well understood. In contrast, the causes of metastasis are significantly less well understood. We are suggesting that metastasis occurs as a result of cancer cells removing themselves from the inhospitable environment inside tumors by employing normal cellular defense mechanisms. We grew MCF-7 and MDA-MB-468 breast cancer cells in cell culture and exposed them to heat and hypoxia stress. Western blot analysis of the cell lysates showed an increase in furin expression in the heat and hypoxia stress conditions. The MCF-7 cells showed a decrease in PACE4 expression in the stress conditions. Invasion assay analysis of the MDA-MB-468 and MCF-7 cells under our experimental cell culture condition showed an increase in cell migration with the stress exposed cells. The Western blot results paired with the invasion assay findings suggest that heat and hypoxia stress can promote increased invasiveness of the breast cancer cells and may be an underlying mechanism that drives cancer metastasis. Further exploration of this hypothesis using 3-dimensional cell culture and an alternative method of testing MMP activity or expression would bolster our understanding of the biological mechanisms involved in cancer metastasis, leading to the identification of novel diagnostic or therapeutic targets in treating aggressive cancers.
Quantum heat valve and diode of strongly coupled defects in amorphous material
Creators: name: Liu, Yu-qiang
name: Yang, Yi-Jia
name: Ma, Ting-ting
name: Liu, Zheng
name: Yu, Chang-shui
Publisher: name: arXiv
Year: 2024
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The mechanical strain can control the frequency of two-level atoms in amorphous material. In this work, we would like to employ two coupled two-level atoms to manipulate the magnitude and direction of heat transport by controlling mechanical strain to realize the function of a thermal switch and valve. It is found that a high-performance heat diode can be realized in the wide Piezo voltage range at different temperatures. We also discuss the dependence of the rectification factor on temperatures and couplings of heat reservoirs. We find that the higher temperature differences correspond to the larger rectification effect. The asymmetry system-reservoir coupling strength can enhance the magnitude of heat transfer, and the impact of asymmetric and symmetric coupling strength on the performance of the heat diode is complementary. It may provide an efficient way to modulate and control heat transport's magnitude and flow preference. This work may give insight into designing and tuning quantum heat machines.
description: 10 pages, 9 figures;Accepted for publication in Physical Review E
Spiral Arms Triggered By Shadows In Transition Disks
Creators: name: Montesinos, Matias
Publisher: name: Zenodo
Year: 2016

description: Motivated by the recent identification of deep shadows cast by an inner warp in HD142527 we suggest a novel mechanism able to trigger spiral arms only from illumination effects due the warp.

Using 2D hydro simulations we found that pressure gradients due to temperature differences between obscured and illuminated regions induce observable (scattered light) spiral structures in the density field.
description: Sebastian Perez, Simon Casassus, Sebastian Marino, Jorge Cuadra, Valentin Christiaens
Interdisciplinary, systematic review found influences on household recycling behaviour are many and multifaceted, requiring a multi-level approach.
Creators: name: Macklin, Jennifer
name: Curtis, Jim
name: Smith, Liam
Publisher: name: Monash University
Year: 2024

description: The objective of this paper was to conduct a systematic review across a wide range of disciplines on what influences households recycling behaviour of adults in urban areas of high income, OECD countries. The resulting factors were methodically synthesised using a configurative approach to produce a comprehensive multi-level hierarchy of potentially influencing factors.
Coherent Phonon Coupling to Individual Bloch States in Photoexcited Bismuth
Creators: name: Papalazarou, E.
name: Faure, J.
name: Mauchain, J.
name: Marsi, M.
name: Taleb-Ibrahimi, A.
name: Reshetnyak, I.
name: van Roekeghem, A.
name: Timrov, I.
name: Vast, N.
name: Arnaud, B.
name: Perfetti, L.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We investigate the temporal evolution of the electronic states at the bismuth (111) surface by means of time and angle resolved photoelectron spectroscopy. The binding energy of bulk-like bands oscillates with the frequency of the $A_{1g}$ phonon mode whereas surface states are insensitive to the coherent displacement of the lattice. A strong dependence of the oscillation amplitude on the electronic wavevector is correctly reproduced by \textit{ab initio} calculations of electron-phonon coupling. Besides these oscillations, all the electronic states also display a photoinduced shift towards higher binding energy whose dynamics follows the evolution of the electronic temperature.
Nonlinear effective medium theory of disordered spring networks
Creators: name: Sheinman, M.
name: Broedersz, C. P.
name: MacKintosh, F. C.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: Disordered soft materials, such as fibrous networks in biological contexts exhibit a nonlinear elastic response. We study such nonlinear behavior with a minimal model for networks on lattice geometries with simple Hookian elements with disordered spring constant. By developing a mean-field approach to calculate the differential elastic bulk modulus for the macroscopic network response of such networks under large isotropic deformations, we provide insight into the origins of the strain stiffening and softening behavior of these systems. We find that the nonlinear mechanics depends only weakly on the lattice geometry and is governed by the average network connectivity. In particular, the nonlinear response is controlled by the isostatic connectivity, which depends strongly on the applied strain. Our predictions for the strain dependence of the isostatic point as well as the strain-dependent differential bulk modulus agree well with numerical results in both two and three dimensions. In addition, by using a mapping between the disordered network and a regular network with random forces, we calculate the non-affine fluctuations of the deformation field and compare it to the numerical results. Finally, we discuss the limitations and implications of the developed theory.
description: 18 pages, 13 figures
Little-Parks oscillations near a persistent current loop
Creators: name: Gomes, Rodolpho Ribeiro
name: de Oliveira, Isaías G.
name: Doria, Mauro M.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We investigate the Little-Parks oscillations caused by a persistent current loop set on the top edge of a mesoscopic superconducting thin-walled cylinder with a finite height. For a short cylinder the Little-Parks oscillations are approximately the same ones as the standard effect, as there is only one magnetic flux piercing the cylinder. For a tall cylinder the inhomogeneity of the magnetic field makes different magnetic fluxes pierce the cylinder at distinct heights and we show here that this produces two distinct Little-Parks oscillatory regimes according to the persistent current loop. We show that these two regimes, and also the transition between them, are observable in current measurements done in the superconducting cylinder. The two regimes stem from different behavior along the height, as seen in the order parameter, numerically obtained from the Ginzburg-Landau theory through the finite element method
description: 13 pages, 12 figures
title: Directional Microphone based on Artificial Spider Silk
Creators: name: Tropper, Thomas
Publisher: name: TU Wien
Year: 2021
Subjects: subject: microphone
subject: MEMS
subject: spider
subject: silk
subject: acoustics

description: Directional sound detection is usually achieved by using pressure microphone arrays. The drawback of such arrays is that they need further signal processing and show difficulties in combining high sensitivity, flat bandwidth and compactness. To counter these disadvantages spider silk microphones have shown to be very efficient at capturing the fluctuations in air velocity with a figure-of-eight directivity, high sensitivity and a broad frequency response. To create an artificial sensor based on this concept, silicon nitride (SiNx) was used. Even though the SiNx-samples have a high pre-stress they show high sensitivity and in average a figure-of-eight characteristic. In combination with a laser vibrometer it was shown that this setup is a fully functioning microphone. Yet there is plenty of space for improvement. Reduction in internal stress and a portable transduction setup are upcoming challenges for SiNx-fiber sensors.
Learning mathematics for the workplace : an activity theory study of pipe trades training
Creators: name: LaCroix, Lionel N.
Publisher: name: University of British Columbia
Year: 2010

description: This study examines a single pipe trades pre-apprentice within a one-on-one impromptu tutoring session making sense of fractions-of-an-inch on a measuring tape within the context of a pre-apprenticeship program for the pipe trades. The multi-semiotic analysis of this event is framed using cultural-historical activity theory and Radford’s theory of knowledge objectification. From these complementary perspectives, mathematics is considered a culturally situated purposeful activity. Specifically, mathematics learning involves a cultural-historical, socially, and semiotically mediated process of objectification, (i.e., a process in which one becomes progressively aware and conversant, through one’s actions and interpretations, of a cultural logic of mathematical objects). The analysis focuses on the pre-apprentice’s and tutor’s joint activity during this encounter, drawing on video data and various artifacts used. This entailed slow-motion and frame-by-frame analysis of the video to assess the role and coordination of various semiotic systems, actions, and artifacts. Particular attention is paid to: the semiotic system of cultural signification, norms of practice, contradictions or conflicts that serve to motivate this activity, specific objectives of or sub-goals in the learning process for this student, semiotic processes used both by the student and tutor in the objectification process, as well as changes to the subjectification of both the pre-apprentice and researcher-as-tutor in this process. This analysis informs Radford’s theory of knowledge objectification by showing, through fine-grained analysis, relevant aspects of its dynamics and by calling attention to a new form of iconicity and a process of semiotic extraction, both original contributions to research. It also shows various ways in which a learner’s subjectification is evident in the process of learning mathematics. The results have a number of practical implications for the teaching of mathematics generally, and mathematics for the workplace in particular, by drawing attention to the social, cultural, historical, and mediated dimensions and dynamics of mathematics learning activity. The findings also illustrate the complexity of learning to measure by identifying a number of processes and conflicts involved and practical ways these are negotiated or resolved.
Calculation of bulk viscosity of QCD at zero temperature and finite chemical potential
Creators: name: Wang, Ming-Min
name: Jiang, Yu
name: Wang, Bin
name: Sun, Wei-Min
name: Zong, Hong-Shi
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this letter, based on Kubo's formula and the QCD low energy theorem, we propose a direct formula for calculating the bulk viscosity of QCD at finite chemical potential $μ$ and zero temperature. According to this formula, the bulk viscosity at finite $μ$ is totally determined by the dressed quark propagator at finite $μ$. We then use a dynamical, confining Dyson-Schwinger equation model of QCD to calculate the bulk viscosity at finite $μ$. It is found that no sharp peak behavior of the bulk viscosity at finite $μ$ is observed, which is quite different from that of the bulk viscosity at finite temperature.
description: 5 pages, 1 figure, 1 table
Cytochrome C Oxidase 1 Divergences among Indian and Global Mosquito Species
Creators: name: Damodaran, Divya
name: D. Sudarsanam
name: S. Siddhardha Solosan
Publisher: name: Zenodo
Year: 2021
Subjects: DNA Barcoding
cytochrome oxidase1
distance values
phylogenetic analysis
genetic divergence

description: Molecular phylogenetics elucidates the links between organisms. It uses a combination of molecular and statistical tools to create evolutionary links between live creatures or genes. Genetic distance is the number of mutation/evolutionary events between species since their divergence. The simplest way to calculate it is to count the number of difference between two sequences.Genetic distance is useful for reconstructing the history of populations. The primary goal of molecular phylogenetic research is to reconstruct the sequence of transformational events and represent them in developmental trees that graphically depict links between species or genes throughout time.At a time, distance analysis compares two aligned sequences and creates a matrix of all possible sequence pairs. The number of modifications (base substitutions and insertion/deletion events) are counted and given as a percentage of the overall sequence length for each comparison.Pairwise distances are final estimates of the difference between all possible pairs of sequences. Mosquito vectors are considered to be among the deadliest animals in the world. It is estimated that millions of people succumb to disease transmitted to humans by mosquitoes (WHO 2020).Changing climates have enabled invasive mosquito species previously confined to the tropics and subtropics to advance poleward and establish mosquito populations that have the potential to transmit pathogens that can cause disease.
Visualizing a Pandemic: Lessons from COVID-19 About Data and Decisions
Creators: name: Adkins, Madison
Publisher: name: My University
Year: 2023
Subjects: subject: data visualization
subject: COVID-19
subject: risk perception
subject: media communications
subject: cognitive psychology
subject: Psychology
subject: FOS: Psychology
subject: Social Sciences

description: Researchers have long studied how data visualizations influence risk perception. It’s possible that the spread of COVID throughout the population could have been reduced by using best practices from the data visualization and risk perception literatures to develop public communications about the severity of COVID that were effective and unbiased. In this dissertation I discuss three lines of research examining how people understood common data visualizations presented to the public during the pandemic and how understanding of COVID data was related to attitudes towards preventative measures. In Chapter 2, I show that people over- or under-estimated the exponential growth of COVID depending on the linearity of the data, that viewing tables of data improved forecasting accuracy compared to graphs, that viewing graphs was associated with false confidence in one’s forecasts, and some evidence that attitudes towards social distancing was positively correlated with the magnitude of participants’ forecasts. In Chapter 3, I show that people misunderstood the relationship between daily and cumulative case curves and that participating in a brief video intervention improved understanding of accumulation. The effects of the intervention were long lasting and transferred to contexts outside of COVID. Participating in the intervention was also associated with more favorable attitudes towards social distancing and social distancing policies. In Chapter 4, I show that viewing icon arrays illustrating the 1 in 1 million chance of experiencing the reported side effect from the Johnson & Johnson vaccine prevented significant increases in aversion towards the Johnson & Johnson vaccine as well as all COVID vaccines. Lastly, in Chapter 5, I provide a synthesis of the literature conducted during the pandemic on how people understood COVID visualizations and describe three main findings: (1) people misunderstood commonly used COVID visualizations, (2) data visualizations influenced risk perception, and (3) graphs were sometimes used to mislead the public during the pandemic. This research informs how data should be communicated with the public and provides guidelines for how data should be explained to the public with visualizations.
Coarse graining methods for spin net and spin foam models
Creators: name: Dittrich, Bianca
name: Eckert, Frank C.
name: Martin-Benito, Mercedes
Publisher: name: arXiv
Year: 2011
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: High Energy Physics - Lattice (hep-lat)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We undertake first steps in making a class of discrete models of quantum gravity, spin foams, accessible to a large scale analysis by numerical and computational methods. In particular, we apply Migdal-Kadanoff and Tensor Network Renormalization schemes to spin net and spin foam models based on finite Abelian groups and introduce `cutoff models' to probe the fate of gauge symmetries under various such approximated renormalization group flows. For the Tensor Network Renormalization analysis, a new Gauss constraint preserving algorithm is introduced to improve numerical stability and aid physical interpretation. We also describe the fixed point structure and establish an equivalence of certain models.
description: 39 pages, 13 figures, 1 table
Synchrotron radiation in a chromo-magnetic field
Creators: name: Dbeyssi, Alaa
name: Dirani, Dima Al
name: Zaraket, H.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the generalization of QED synchrotron radiation to the QCD case with a chromomagnetic field using the Schwinger {\it et al} source method. It is shown that the QED case can be obtained as a special limit. The comparison with the path integral approach of Zakharov has shown consistent results.
description: Accepted for publication in Phys. Rev. D
Soyboys will be boys: Negotiating vegan masculinities in the land of lamb ‘lovers'
Creators: name: Hill, Alexander
Publisher: name: Macquarie University
Year: 2023
Subjects: Other education not elsewhere classified

description: Vegan men wield the dual privileges of men (in a gender hierarchy) and human animals (in a species hierarchy), yet identify with a liberatory movement that is seemingly antagonistic to both patriarchy and anthroparchy. This contradictory positionality is predicted to be especially acute in Australia where meat – foregone by vegans – is closely tied to the Australian master identity (Plumwood, 1993). Homing in on these power dynamics, I conducted 10 in-depth, semi-structured interviews with vegan men living in Australia. I explored how vegan men conceptualised their identity in relation to patriarchy and anthroparchy, as well as how they related to animals – both human and non-human – that live within and across these hierarchies. Interviewees described feeling stigmatised in Australia, and responded to this stigmatisation by valorising reason, emphasising the importance of argumentation and practising tactics that weaponised masculinity. These findings align with work on hybrid masculinity (Greenebaum & Dexter, 2018) which suggests that vegan men distance themselves from hegemonic masculinity, but ultimately fortify power relations between men and women. However, I also found that veganism appears to act as a ‘gateway’ through which vegan men could begin to appreciate other social issues. Ultimately, by investigating the experiences of vegan men, I hope to map a more discernible path towards equity on the basis of gender and species, and contribute towards building a more reflexive social movement.
Landau level spectroscopy of surface states in the topological insulator Bi$_{0.91}$Sb$_{0.09}$ via magneto-optics
Creators: name: Schafgans, A. A.
name: Taskin, A. A.
name: Ando, Yoichi
name: Qi, Xiao-Liang
name: Chapler, B. C.
name: Post, K. W.
name: Basov, D. N.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We have performed broad-band zero-field and magneto-infrared spectroscopy of the three dimensional topological insulator Bi$_{0.91}$Sb$_{0.09}$. The zero-field results allow us to measure the value of the direct band gap between the conducting $L_a$ and valence $L_s$ bands. Under applied field in the Faraday geometry (\emph{k} $||$ \emph{H} $||$ C1), we measured the presence of a multitude of Landau level (LL) transitions, all with frequency dependence $ω\propto \sqrt{H}$. We discuss the ramification of this observation for the surface and bulk properties of topological insulators.
description: 7 pages, 8 figures, March Meeting 2011 Abstract: J35.00003
Experimental Evidence for Quantum Interference and Vibrationally Induced Decoherence in Single-Molecule Junctions
Creators: name: Ballmann, Stefan
name: Härtle, Rainer
name: Coto, Pedro B.
name: Mayor, Marcel
name: Elbing, Mark
name: Bryce, Martin R.
name: Thoss, Michael
name: Weber, Heiko B.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We analyze quantum interference and decoherence effects in single-molecule junctions both experimentally and theoretically by means of the mechanically controlled break junction technique and density-functional theory. We consider the case where interference is provided by overlapping quasi-degenerate states. Decoherence mechanisms arising from the electronic-vibrational coupling strongly affect the electrical current flowing through a single-molecule contact and can be controlled by temperature variation. Our findings underline the all-important relevance of vibrations for understanding charge transport through molecular junctions.
description: 5 pages, 4 figures
Life times and chirality of spin-waves in antiferromagnetic and ferromagnetic FeRh: time depedent density functional theory perspective
Creators: name: Sandratskii, Leonid M.
name: Buczek, Paweł
Publisher: name: arXiv
Year: 2011
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The study of the spin excitations in antiferromagnetic (AFM) and ferromagnetic (FM) phases of FeRh is reported. We demonstrate that although the Fe atomic moments are well defined there is a number of important phenomena absent in the Heisenberg description: Landau damping of spin waves, large Rh moments induced by the AFM magnons, the formation of the optical magnons terminated by Stoner excitations. We relate the properties of the spin-wave damping to the features of the Stoner continuum and compare the chirality of the spin excitations in AFM, FM and paramagnetic (PM) systems.
description: 5 pages, 5 figures, submitted to PRB
Specificity and Functional Conservation of COPII Components
Creators: name: Tang, Vi
Publisher: name: My University
Year: 2023
Subjects: subject: Endoplasmic reticulum
subject: COPII
subject: cargo receptor
subject: Golgi apparatus
subject: Protein transport
subject: Physiology
subject: FOS: Biological sciences
subject: Science

description: Protein secretion into the extracellular space is a fundamental process in all eukaryotic cells. In multicellular organisms, secreted proteins participate in critical processes such as intercellular communication, maintenance of metabolic homeostasis, immune reactions, and neurotransmission. The majority of secreted proteins follow the intracellular secretory pathway starting from the endoplasmic reticulum (ER). The first step in this pathway is the recruitment and transport of these proteins from the ER to the Golgi apparatus by coat protein complex II (COPII). Cargo recruitment is mediated by COPII protein in conjunction with cargo receptors – ER transmembrane proteins that bridge interactions between COPII proteins and soluble proteins restricted to the ER lumen. This dissertation examines the specificity of this process. We explored whether the two mammalian paralogs for the COPII component SAR1 are functionally equivalent and found that they exhibit extensive functional overlap such that SAR1A can compensate for the SAR1B deficiency in mice. We next focused on the two prototypical mammalian cargo receptors LMAN1 and SURF4. We developed a novel mass spectrometry-based analysis approach to identify bona fide secreted proteins with high sensitivity. We then applied this technique to define the cargo repertoire for LMAN1 and SURF4, finding that SURF4 has a much more extensive cargo range than LMAN1 in hepatocytes. Finally, we investigated the physiologic roles of hepatic SURF4 in mice, revealing that SURF4 mediates the secretion of lipoproteins from hepatocytes, with mice lacking hepatic SURF4 exhibiting profound hypocholesterolemia. Together, these data demonstrate both functional conservation among COPII paralogs and specificity of cargo receptors in mammals.
Measurement Of Starspot Properties By Forward Modeling Igrins Spectra Of Lkca4
Creators: name: Gully-Santiago, Michael
name: Herczeg, Gregory
name: Czekala, Ian
Publisher: name: Zenodo
Year: 2016
Subjects: Starspots
T-Tauri stars
Pre-main sequence
Infrared Spectroscopy

description: Cool star light curves often show periodic variability indicative of rotational modulation from starspots entering and exiting the visible stellar disk.  T-Tauri stars exhibit some of the greatest modulations.  We computed the interquartile range of K2 cycle 2 light curves for 1658 young stellar objects or candidate young stellar objects towards Ophiuchus and Upper Scorpius.  The typical interquartile range is 1-15%.  The modulation amplitude only indicates the presence of longitudinally asymmetric starspots and therefore cannot uniquely constrain the starspot properties (Neff et al. 1995, Harrison et al. 2011).  Spectroscopy offers a way to constrain the the longitudinally symmetric component of starspots, through the spectral signature of multiple photospheric components.  We extended the modular likelihood framework, Starfish (Czekala et al. 2015), to include a two-component photosphere parameterized by an areal filling factor $f$ of starspots with a temperature contrast $\delta T_{\rm eff}$.  We applied the spectroscopic forward modeling framework to ~40 unique echelle orders of IGRINS spectroscopy of LkCa4 with R~45,000 in H- and K- bands.  A fit to each order with one photospheric component yields derived effective Temperatures in the range 4100-3300 K, with lower temperatures derived in K-band than H-band.  The two-component photospheric models yield measurements for $\delta T_{eff}$ ~1000 K and fill factors of cool spots >50\%.  The importance of starspots needs to be empirically evaluated to assess systematic biases of pre-main sequence stellar evolutionary models.
description: Poster #230
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Quantum critical scaling at the edge of Fermi liquid stability in a cuprate superconductor
Creators: name: Butch, N. P.
name: Jin, K.
name: Kirshenbaum, K.
name: Greene, R. L.
name: Paglione, J.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: In the high temperature cuprate superconductors, the pervasiveness of anomalous electronic transport properties suggests that violation of conventional Fermi liquid behavior is closely tied to superconductivity. In other classes of unconventional superconductors, atypical transport is well correlated with proximity to a quantum critical point, but the relative importance of quantum criticality in the cuprates remains uncertain. Here we identify quantum critical scaling in the electron-doped cuprate material La2-xCexCuO4 with a line of quantum critical points that surrounds the superconducting phase as a function of magnetic field and charge doping. This zero-temperature phase boundary, which delineates a metallic Fermi liquid regime from an extended non-Fermi liquid ground state, closely follows the upper critical field of the overdoped superconducting phase and gives rise to an expanse of distinct non Fermi liquid behavior at finite temperatures. Together with signatures of two distinct flavors of quantum fluctuations, this suggests that quantum criticality plays a significant role in shaping the anomalous properties of the cuprate phase diagram.
description: 16 pages, 3 figures + supplementary material
Teacher conversations : building a learning community with interactive whiteboards
Creators: name: Lim-Fong, Brenda Jane
Publisher: name: University of British Columbia
Year: 2010

description: Of the many forms of technology that is available for use by teachers with their students in the classroom, interactive whiteboards (IWBs) demonstrate considerable potential in helping to meet the needs of students with diverse learning styles and to engage students during the learning process. Integrating elements of text, graphics, sound, video and the capability of the user to physically interact with the objects on the screen, the IWB has offered an innovative approach to teaching and learning interactively. For over five years, teachers at an elementary school in the Lower Mainland of British Columbia have expressed an interest in the innovative potential of IWB technology and have been using IWBs in their classrooms. Teachers have observed, discussed and documented multiple ways in which IWBs have supported teaching and learning. United by a common thread to improve their skills as IWB users, a group of teachers have voluntarily come together once a month after-school. Through a mutual strong desire and curiosity to enhance student learning, teachers engaged in conversations, and discussed issues related to the use of IWB technology in their classrooms through a teacher inquiry research group. This qualitative study identified key attributes of the Inquiry Group as well as examined how teacher conversations about interactive whiteboard technology have evolved into a learning community. Through inquiry meetings and electronic conversations on the Group’s wiki, teachers have created time to think deeply about how their practice has changed as well as share what has happened in their classrooms. Teachers have shown professional growth in their understanding about pedagogy and practice through conversations. Teachers reflected characteristics including respect, self-reflection, openness, curiosity, leadership, passion, cooperation and a willingness to learn. Conversations about IWB use were significant in facilitating teachers’ framing of their individual professional development and building of a network. It has enabled a group of teachers to come together to learn professionally and evolve into a community of learners.
Zygomyia humeralis
Creators: name: El Mouden, Mohamed Amin
name: Chandler, Peter J.
name: Saidoun, Imane
name: Driauach, Ouafaa
name: Belqat, Boutaïna
Publisher: name: Zenodo
Year: 2025
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Mycetophilidae
Zygomyia
Zygomyia humeralis

description: Zygomyia humeralis (Wiedemann, 1817)
Material examined.
Morocco – Middle Atlas Region • 8 ♂♂; Gouffre Izora; 19/V/2022; K. Aattouch, M. El Ouahabi and M. A. El Mouden leg; UAE-FST MA 22/24193 • 1 ♂; Grotte Bouslama; 19/V/2022; K. Aattouch, M. El Ouahabi and M. A. El Mouden leg; UAE-FST MA 22/24194 • 1 ♂; Aïn Admam; 22/V/2022; K. Aattouch, M. El Ouahabi and M. A. El Mouden leg; UAE-FST MA 22/24195 • 1 ♂; Forêt Admam; 22/V/2022; K. Aattouch, M. El Ouahabi and M. A. El Mouden leg; UAE-FST MA 22/24196.
North African distribution.
Tunisia (unpublished record, leg. H. Malicky, pers. comm. from N. Caspers, 14 April 2004); Morocco (Banamar et al. 2020).
description: Published as part of El Mouden, Mohamed Amin, Chandler, Peter J., Saidoun, Imane, Driauach, Ouafaa & Belqat, Boutaïna, 2025, A new species of Docosia Winnertz, 1864 and new records of fungus gnats (Diptera, Bolitophilidae, Keroplatidae and Mycetophilidae) from North Africa, pp. 349-379 in ZooKeys 1233 on pages 349-379, DOI: 10.3897/zookeys.1233.130502
An adaptive network-based approach for advanced forecasting of cryptocurrency values
Creators: name: Mehrban, Ali
name: Ahadian, Pegah
Publisher: name: arXiv
Year: 2024
Subjects: subject: Statistical Finance (q-fin.ST)
subject: Computational Engineering, Finance, and Science (cs.CE)
subject: Cryptography and Security (cs.CR)
subject: Machine Learning (cs.LG)
subject: FOS: Economics and business
subject: FOS: Computer and information sciences

description: This paper describes an architecture for predicting the price of cryptocurrencies for the next seven days using the Adaptive Network Based Fuzzy Inference System (ANFIS). Historical data of cryptocurrencies and indexes that are considered are Bitcoin (BTC), Ethereum (ETH), Bitcoin Dominance (BTC.D), and Ethereum Dominance (ETH.D) in a daily timeframe. The methods used to teach the data are hybrid and backpropagation algorithms, as well as grid partition, subtractive clustering, and Fuzzy C-means clustering (FCM) algorithms, which are used in data clustering. The architectural performance designed in this paper has been compared with different inputs and neural network models in terms of statistical evaluation criteria. Finally, the proposed method can predict the price of digital currencies in a short time.
description: 11 pages
Renormalization of cellular automata and self-similarity
Creators: name: Edlund, Erik
name: Jacobi, Martin Nilsson
Publisher: name: arXiv
Year: 2011
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study self-similarity in one-dimensional probabilistic cellular automata (PCA) using the renormalization technique. We introduce a general framework for algebraic construction of renormalization groups (RG) on cellular automata and apply it to exhaustively search the rule space for automata displaying dynamic criticality. Previous studies have shown that there exists several exactly renormalizable deterministic automata. We show that the RG fixed points for such self-similar CA are unstable in all directions under renormalization. This implies that the large scale structure of self-similar deterministic elementary cellular automata is destroyed by any finite error probability. As a second result we show that the only non-trivial critical PCA are the different versions of the well-studied phenomenon of directed percolation. We discuss how the second result supports a conjecture regarding the universality class for dynamic criticality defined by directed percolation.
description: 14 pages, 4 figures
Discovery Of Concentric Broken Rings At Sub-Arcsec Separations In The Hd 141569A Gas-Rich, Debris Disk With Vlt/Sphere
Creators: name: Perrot, Clément
Publisher: name: Zenodo
Year: 2016

description: Observations with SPHERE of HD141569A revealed a series of concentric ringlets located at 116-46AU and matching the formerly detected extended emission in the mid-IR and visible, although finer details are detected here. The brightest ring at 46AU has sharp edges and presents an unusual strong north/south asymmetry. Such structures may result from planet sheperding or gas/dust interactions.
description: A. Boccaletti, E. Pantin, J-C. Augereau, A-M. Lagrange, R. Galicher, A-L. Maire, J. Mazoyer, J. Milli, G. Rousset, R. Gratton, M. Bonnefoy, W. Brandner, E. Buenzli, M. Langlois, J. Lannier, D. Mesa, S. Peretti, G. Salter, E. Sissa, G. Chauvin, S. Desidera, M. Feldt, A. Vigan, E. Di Folco, A. Dutrey, J. Pércaud, P. Baudoz, M. Benisty, J. De Boer, A. Garufi, J. H. Girard, F. Menard, J. Olofsson,  S. P. Quanz, D. Mouillet, V. Christiaens, 17, S. Casassus, J.-L. Beuzit, P. Blanchard, M. Carle, T. Fusco, E. Giro, N. Hubin, D. Maurel, O. Moeller-Nilsson, A. Sevin, L. Weber
MicroFuzz: An Efficient Fuzzing Framework for Microservices
Creators: name: Di, Peng
name: Liu, Bingchang
name: Gao, Yiyi
Publisher: name: arXiv
Year: 2024
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: This paper presents a novel fuzzing framework, called MicroFuzz, specifically designed for Microservices. Mocking-Assisted Seed Execution, Distributed Tracing, Seed Refresh and Pipeline Parallelism approaches are adopted to address the environmental complexities and dynamics of Microservices and improve the efficiency of fuzzing. MicroFuzz has been successfully implemented and deployed in Ant Group, a prominent FinTech company. Its performance has been evaluated in three distinct industrial scenarios: normalized fuzzing, iteration testing, and taint verification.Throughout five months of operation, MicroFuzz has diligently analyzed a substantial codebase, consisting of 261 Apps with over 74.6 million lines of code (LOC). The framework's effectiveness is evident in its detection of 5,718 potential quality or security risks, with 1,764 of them confirmed and fixed as actual security threats by software specialists. Moreover, MicroFuzz significantly increased program coverage by 12.24% and detected program behavior by 38.42% in the iteration testing.
description: Accepted by ICSE-SEIP 2024
Singlet state creation and Universal quantum computation in NMR using Genetic Algorithm
Creators: name: Manu, V. S.
name: Kumar, Anil
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Experimental implementation of a quantum algorithm requires unitary operator decomposition. Here we treat the unitary operator decomposition as an optimization problem and use Genetic Algorithm, a global optimization method inspired by nature's evolutionary process for operator decomposition. As an application, we apply this to NMR Quantum Information Processing and find a probabilistic way of doing universal quantum computation using global hard pulses. We also demonstrate efficient creation of singlet state (as a special case of Bell state) directly from thermal equilibrium using an optimum sequence of pulses.
Chemical properties in the most distant radio galaxy
Creators: name: Matsuoka, Kenta
name: Nagao, Tohru
name: Maiolino, Roberto
name: Marconi, Alessandro
name: Taniguchi, Yoshiaki
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present a deep optical spectrum of TN J0924-2201, the most distant radio galaxy at z = 5.19, obtained with FOCAS on the Subaru Telescope. We successfully detect, for the first time, the CIV1549 emission line from the narrow-line region (NLR). In addition to the emission-line fluxes of Ly alpha and CIV, we set upper limits on the NV and HeII emissions. We use these line detections and upper limits to constrain the chemical properties of TN J0924-2201. By comparing the observed emission-line flux ratios with photoionization models, we infer that the carbon-to-oxygen relative abundance is already [C/O] > -0.5 at a cosmic age of ~ 1.1 Gyr. This lower limit on [C/O] is higher than the ratio expected at the earliest phases of the galaxy chemical evolution, indicating that TN J0924-2201 has already experienced significant chemical evolution at z = 5.19.
description: Accepted for publication in A&A, 5 pages, 3 figures
Gas And Dust Evolution In Protoplanetary Disks: Models Vs. Observations
Creators: name: Pinilla, Paola
Publisher: name: Zenodo
Year: 2016

description: Recent powerful facilities as ALMA and VLT/SPHERE, with their unprecedented sensitivity and spatial resolution, have revealed fascinating structures in protoplanetary disks at different wavelengths, such as: multiple rings, vortices, asymmetries, dips, and spiral arms. In this talk, I will compare these observations with theoretical models that combine hydrodynamical simulations of gas

evolution and dust growth, which include the coagulation and fragmentation of particles. I will present how these detailed observations are providing significant insights about different parameters that play an important role in the evolution of

protoplanetary disks such as snow lines, potential embedded planets, and viscosity.
Suppression of neutral pion production at large transverse momentum measured with the ALICE experiment in Pb-Pb collisions at $\sqrt{s_{NN}}=2.76$ TeV
Creators: name: Balbastre, G. Conesa
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The ALICE collaboration at the LHC has measured the transverse momentum spectra of neutral pions via their two photon decay in pp and Pb$-$Pb collisions at $\sqrt{s_{NN}}=2.76$ TeV over a broad transverse momentum range with different subsystems: with the electromagnetic calorimeters PHOS and EMCAL and with photon conversions in the inner material of the detectors using $e^{+}e^{-}$ pairs reconstructed with the Central Tracking System. In this report, neutral pions production is compared between pp and Pb$-$Pb collisions measured with conversion photons in terms of the nuclear modification factor, $R_{AA}$, for different centrality selections of the Pb$-$Pb data sample.
description: 4 pages, 4 figures, proceedings of QM 2011
Young Planets Embedded In Circumstellar Disks
Creators: name: Quanz, Sascha P.
Publisher: name: Zenodo
Year: 2016

description: Where, when and how do (gas giant) planets form? - Up to now the formation process of planets was mostly a subject of theroretical studies and computer simulations. Empirical data were only used to constrain the initial conditions (e.g., the physical and chemical conditions in circumstellar disks) or the outcome of the planet formation process (e.g., by comparing bulk density and atmopsheric composition from simulations to observed exoplanets or by comparing simulated planet populations to the observed population of exoplanets). Recently, however, high-contrast and high-spatial resolution observations revealed a few objects that are best explained with young planets that are still embedded in the circumstellar disks of their host stars. For the first time, these objects may allow us to derive empirical constraints on the immediate formation process of gas giant planets. In this talk, I will summarize the current knowledge of these systems, highlight the challenges that remain in interpreting the existing data and how they can be overcome, and illustrate why empirical constraints on the planet formation process are crucial for exoplanet research in general.
What Is The Minimum Planet Mass That Creates Observable Signatures In Protoplanetary Discs?
Creators: name: Rosotti, Giovanni
Publisher: name: Zenodo
Year: 2016

description: I've run dust and gas multifluid simulations to investigate the minimum planet mass that produces observable signatures in infrared scattered light and submm continuum images; I find a value of roughly 12 Earth masses, which is observable even if doesn't create a pressure maximum. I'll demonstrate how the combination of these images can be used to measure planet masses to within a factor of two.
description: With: Attila Juhasz, Richard Booth, Cathie Clarke
Resolved Co Snow Line & Gas Properties In Tw Hya
Creators: name: Schwarz, Kamber
Publisher: name: Zenodo
Year: 2016

description: We present the first resolved, multi-transitional study of 13CO and C18O in TW Hya. Here we will show these data readily constrains the thermal profile of the disk. Combined with the previous HD detection this enables the first estimates of the gas surface density from a calibrated gas tracer. We also resolve the CO snowline and calculate the physical and chemical properties at these transitions.
description: E. Bergin, L.I. Cleeves, G. Blake, K. Zhang, K. Öberg, E. van Dishoeck, C. Qi
Shadows Cast On The Transition Disk Of Hd 135344B
Creators: name: Stolker, Tomas
Publisher: name: Zenodo
Year: 2016

description: I will present new VLT/SPHERE polarimetric imaging observations of the transition disk around HD 135344B (SAO 206462) which have revealed multiple shadow features. These shadows are likely cast by a warped inner disk component and possibly an accretion funnel flow from the inner disk onto the star which might explain the variability of one shadow.
description: Carsten Dominik, Henning Avenhaus, Michiel Min, Jos de Boer, Christian Ginski,
Hans Martin Schmid, Atilla Juhasz, Myriam Benisty and The Sphere Consortium