cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Generation of an electromagnetic field nonminimally coupled to gravity during Higgs inflation
Creators: name: Sobol, O. O.
name: Gorbar, E. V.
name: Teslyk, O. M.
name: Vilchinskii, S. I.
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In the framework of Higgs inflation, we consider the electromagnetic field nonminimally coupled to gravity via the parity-preserving $\propto RF^{2}$ and parity-violating $\propto RF\tilde{F}$ terms. Using the perturbation theory to the leading order in these couplings, we study the generation of the electromagnetic field during the inflation stage. We derive the effective kinetic and axial coupling functions arising in the Einstein frame in the usual metric as well as Palatini formulations of gravity. For both formulations, we determine the power spectrum, energy density, and helicality of the generated electromagnetic fields for different values of the nonminimal coupling constants. Finally, we estimate the maximal present-day magnitude of the magnetic field as $10^{-14}-10^{-15}\,$G with the correlation length of order 10 pc.
description: 23 pages, 10 figures
Hubbard models with arbitrary structures in programmable optical lattices
Creators: name: Hague, J. P.
name: Petit, L.
name: MacCormick, C.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We investigate the use of programmable optical lattices for quantum simulation of Hubbard models, determining analytic expressions for the hopping and Hubbard U, finding that they are suitable for emulating strongly correlated systems with arbitrary structures, including those with multiple site basis and impurities. Programmable potentials are highly flexible, with the ability to control the depth and shape of individual sites in the optical lattice dynamically. Quantum simulators of Hubbard models with (1) arbitrary basis are required to represent many real materials of contemporary interest, (2) broken translational symmetry are needed to study impurity physics, and (3) dynamical lattices are needed to investigate strong correlation out of equilibrium. We derive analytic expressions for Hubbard Hamiltonians in programmable potential systems. We find experimental parameters for quantum simulation of Hubbard models with arbitrary basis, concluding that programmable optical lattices are suitable for this purpose. We discuss how programmable optical lattices can be used for quantum simulation of dynamical multi-band Hubbard models that represent complicated compounds, impurities, and non-equilibrium physics.
The impact of initial density profile on protoplanetary disc evolution simulation
Creators: name: Lazareva, G. G.
name: Snytnikov, A. V.
name: Vshivkov, V. A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In the simulation of protoplanetary disc with a power law density profile a disc instability is detected. The instability arises only with a power law profile and is affected by power index. Thus the impact of initial density profile is large within the employed numerical model.
description: 6 pages, 3 figures
A Two-Factor Authentication System using Mobile Phones
Creators: name: Kaviani, Nima
name: Beznosov, Konstantin
Publisher: name: Zenodo
Year: 2008
Subjects: MAS
authentication system
mobile
two factor authentication
two-Factor

description: The use of untrusted computers to access critical information introduces one of the main challenges in protecting the security of users' confidential information. Providing an easy method of accessing such information, without releasing long term credentials and by trusting on less vulnerable devices, is one of the main research areas being investigated by researchers all around the world. Cell phones with their growing functionalities and inherent personalized nature are attracting a lot of attention to be used as tokens to authenticate users. However, their screen size and small keypads makes it impossible to use them for long term transactions. We introduce a two-factor authentication method that not only benefits from the personalized features of cell phones but also allows users to simply use the untrusted client without any fear of losing critical information.
An exact sequence for contact- and symplectic homology
Creators: name: Bourgeois, Frédéric
name: Oancea, Alexandru
Publisher: name: arXiv
Year: 2007
Subjects: subject: Symplectic Geometry (math.SG)
subject: FOS: Mathematics
subject: 54D30

description: A symplectic manifold $W$ with contact type boundary $M = \partial W$ induces a linearization of the contact homology of $M$ with corresponding linearized contact homology $HC(M)$. We establish a Gysin-type exact sequence in which the symplectic homology $SH(W)$ of $W$ maps to $HC(M)$, which in turn maps to $HC(M)$, by a map of degree -2, which then maps to $SH(W)$. Furthermore, we give a description of the degree -2 map in terms of rational holomorphic curves with constrained asymptotic markers, in the symplectization of $M$.
description: Final version. Changes for v2: Proof of main theorem supplemented with detailed discussion of continuation maps. Description of degree -2 map rewritten with emphasis on asymptotic markers. Sec. 5.2 rewritten with emphasis on 0-dim. moduli spaces. Transversality discussion reorganized for clarity (now Remark 9). Various other minor modifications
HOT Admin Research Project: Overview and Results to Date
Creators: name: Beznosov, Konstantin
Publisher: name: Zenodo
Year: 2008
Subjects: HOT Admin
Security Tools
Usable Security
Qualitative Analysis

description: Security of information technology (IT) has become a critical issue for organizations as they must protect their information assets from unauthorized access and quickly resume business activities after a security breach. In order for technological solutions to provide effective support to IT security practitioners, tool developers need to understand better not only the technical, but also the human and organizational dimensions of IT security. To date, there is little empirical evidence about how human, organizational, and technological factors impact the processes of managing IT security. Moreover, little is known about the responsibilities and roles of security practitioners or the effectiveness of their tools and security management practices. The Human, Organization, and Technology Centred Improvement of IT Security Administration (HOT Admin) research project is working to fill this gap.  We use qualitative methods to study experiences of IT security practitioners along several themes including: unique characteristics of IT security vs. general IT, the challenges the security professionals face within the organization, their activities and interactions, what makes them to err, and the impact of the organizational security management models that structure their work. We present preliminary results for each theme, as well as the implications of these results on tool development and research.
Nonlinear behavior of the Chinese SSEC index with a unit root: Evidence from threshold unit root tests
Creators: name: Qian, Xi-Yuan
name: Song, Fu-Tie
name: Zhou, Wei-Xing
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistical Finance (q-fin.ST)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Economics and business
subject: FOS: Physical sciences

description: We investigate the behavior of the Shanghai Stock Exchange Composite (SSEC) index for the period from 1990:12 to 2007:06 using an unconstrained two-regime threshold autoregressive (TAR) model with an unit root developed by Caner and Hansen. The method allows us to simultaneously consider non-stationarity and nonlinearity in financial time series. Our finding indicates that the Shanghai stock market exhibits nonlinear behavior with two regimes and has unit roots in both regimes. The important implications of the threshold effect in stock markets are also discussed.
description: 10 Elsart pages + 5 tables + 1 eps figure
Influence of Operating Parameters on the Performance of a Liquid Desiccant Ventilation Dehumidification System
Creators: name: Thosapon Katejanekarn
Publisher: name: Mahasarakham University
Year: 2013
Subjects: dehumidification system, liquid desiccant, calcium chloride, packed bed, ventilation air

description: 1, 32, Journal of SCIENCE and TECHNOLOGY Mahasarakham University
CeRuPO: A rare example of a Ferromagnetic Kondo lattice
Creators: name: Krellner, C.
name: Kini, N. S.
name: Bruning, E. M.
name: Koch, K.
name: Rosner, H.
name: Nicklas, M.
name: Baenitz, M.
name: Geibel, C.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We have determined the physical ground state properties of the compounds CeRuPO and CeOsPO by means of magnetic susceptibility chi(T), specific heat C(T), electrical resistivity rho(T), and thermopower S(T) measurements. chi(T) reveals a trivalent 4f1 cerium state in both compounds. For CeRuPO a pronounced decrease of rho(T) below 50K indicates the onset of coherent Kondo scattering which is confirmed by enhanced S(T). The temperature and magnetic field dependence of chi(T) and C(T) evidence ferromagnetic (FM) order at TC=15K. Thus, CeRuPO seems to be one of the rare example of a FM Kondo lattice. In contrast, CeOsPO shows antiferromagnetic order at TN=4.4K despite only minor changes in lattice parameters and electronic configuration. Additional 31P NMR results support these scenarios. LSDA+U calculations evidence a quasi two dimensional electronic band structure, reflecting a strong covalent bonding within the CeO and RuP layers and a weak ionic like bonding between the layers.
description: accepted in Phys. Rev. B, high quality figures: http://www.cpfs.mpg.de/~krellner/
Navarra frente al cambio climático: HCCN-KLINA, LIFE-IP NAdapta-CC y la Ley Foral de cambio climático y transición energética
Creators: name: Dozzi, Joël
name: Almarcegui Artieda, Itziar
name: González Moreno, Miguel Ángel
Publisher: name: Gobierno de Navarra
Year: 2022
Subjects: Climate change
Navarre
Adaptation
Energy transition
Water
Agriculture
Foresty
Health
Livestock
Infrastructures
Territorial planning
Monitoring

description: Ponencia realizada en la Jornada sobre el cambio climático en el Instituto de Educación Secundaria Barañáin celebrada el 2 de noviembre de 2022.
ความคิดเห็นต่อการส่งเสริมและสนับสนุนการผลิตข้าวอินทรีย์ของเกษตรกรในนิคมการเกษตรตำบลกำแมด อำเภอกุดชุม จังหวัดยโสธร
Creators: name: ณัฐโสภิณ  ตรีสุวรรณวัฒน์
Publisher: name: คณะเทคโนโลยีการเกษตร  มหาวิทยาลัยราชภัฏมหาสารคาม
Year: 2019
Subjects: ความคิดเห็น
การผลิตข้าวอินทรีย์
ข้าวอินทรีย์

description: วารสารเกษตรพระวรุณ, 16, 2, 213 220
Neutrino decay as a possible interpretation to the MiniBooNE observation with unparticle scenario
Creators: name: Li, Xue-Qian
name: Liu, Yong
name: Wei, Zheng-Tao
name: Tang, Liang
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In a new measurement on neutrino oscillation $ν_μ\toν_e$, the MiniBooNE Collaboration observes an excess of electron-like events at low energy and the phenomenon may demand an explanation which obviously is beyond the oscillation picuture. We propose that heavier neutrino $ν_2$ decaying into a lighter one $ν_1$ via the transition process $ν_μ\to ν_e+X$ where $X$ denotes any light products, could be a natural mechanism. The theoretical model we employ here is the unparticle scenario established by Georgi. We have studied two particular modes $ν_μ\to ν_e+\Un$ and $ν_μ\to ν_e+\barν_e+ν_e$. Unfortunately, the number coming out from the computation is too small to explain the observation. Moreover, our results are consistent with the cosmology constraint on the neutrino lifetime and the theoretical estimation made by other groups, therefore we can conclude that even though neutrino decay seems plausible in this case, it indeed cannot be the source of the peak at lower energy observed by the MiniBooNE collaboration and there should be other mechanisms responsible for the phenomenon.
description: 14 pages, conclusions are changed; published version for EPJC
ความสัมพันธ์ระหว่างบุคลิกภาพ บรรยากาศขององค์การ ความผูกพันต่อองค์การกับพฤติกรรมการเป็นสมาชิกที่ดีขององค์การของครูโรงเรียนอาชีวศึกษาเอกชนในจังหวัดนครศรีธรรมราช
Creators: name: อรัญญา  ไชยศร
Publisher: name: วิทยาลัยเทคโนโลยีภาคใต้
Year: 2556
Subjects: บุคลิกภาพ, บรรยากาศองค์การ, ความผูกพันต่อองค์การ, พฤติกรรมการเป็นสมาชิกที่ดีขององค์การ

description: 1, 6, วารสารเทคโนโลยีภาคใต้
Super-convergence and Differential Privacy: Training faster with better privacy guarantees
Creators: name: Frisk, Osvald
name: Dörmann, Friedrich
name: Lillelund, Christian Marius
name: Pedersen, Christian Fischer
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: The combination of deep neural networks and Differential Privacy has been of increasing interest in recent years, as it offers important data protection guarantees to the individuals of the training datasets used. However, using Differential Privacy in the training of neural networks comes with a set of shortcomings, like a decrease in validation accuracy and a significant increase in the use of resources and time in training. In this paper, we examine super-convergence as a way of greatly increasing training speed of differentially private neural networks, addressing the shortcoming of high training time and resource use. Super-convergence allows for acceleration in network training using very high learning rates, and has been shown to achieve models with high utility in orders of magnitude less training iterations than conventional ways. Experiments in this paper show that this order-of-magnitude speedup can also be seen when combining it with Differential Privacy, allowing for higher validation accuracies in much fewer training iterations compared to non-private, non-super convergent baseline models. Furthermore, super-convergence is shown to improve the privacy guarantees of private models.
description: (To be) Published and presented at the 55th Annual Conference on Information Sciences and Systems (CISS), 7 pages, 4 figures
Fluctuation-induced interactions between dielectrics in general geometries
Creators: name: Pasquali, S.
name: Maggs, A. C.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Computational Physics (physics.comp-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study thermal Casimir and quantum non-retarded Lifshitz interactions between dielectrics in general geometries. We map the calculation of the classical partition function onto a determinant which we discretize and evaluate with the help of Cholesky factorization. The quantum partition function is treated by path integral quantization of a set of interacting dipoles and reduces to a product of determinants. We compare the approximations of pairwise additivity and proximity force with our numerical methods. We propose a ``factorization approximation'' which gives rather good numerical results in the geometries that we study.
title: Private Hochwasservorsorge muss sich in Risikoanalysen niederschlagen
Creators: name: Sairam, Nivedita
name: Kreibich, Heidi
Publisher: name: Deutsches GeoForschungsZentrum GFZ
Year: 2019

description: Private Hochwasservorsorge ist ein wichtiger Bestandteil des integrierten Hochwasserrisikomanagements. Jedoch fehlen quantitative Aussagen über ihre Effektivität bei der Minderung von Hochwasserschäden und sie wird bei Hochwasserrisikoanalysen weitgehend ignoriert. Forscherinnen und Forscher des GFZ errechneten für jeden Haushalt den individuellen Kostenvorteil durch private Vorsorge und zeigten, welche Modelle diese Einsparung am besten widerspiegeln.
Non-linear Symmetry-preserving Observer on Lie Groups
Creators: name: Bonnabel, S.
name: Martin, P.
name: Rouchon, P.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics

description: In this paper we give a geometrical framework for the design of observers on finite-dimensional Lie groups for systems which possess some specific symmetries. The design and the error (between true and estimated state) equation are explicit and intrinsic. We consider also a particular case: left-invariant systems on Lie groups with right equivariant output. The theory yields a class of observers such that error equation is autonomous. The observers converge locally around any trajectory, and the global behavior is independent from the trajectory, which reminds of the linear stationary case.
description: 12 pages. Submitted. Preliminary version publicated in french in the CIFA proceedings and IFAC08
Electroweak Chiral Lagrangian for Left-right Symmetric Models
Creators: name: Zhang, Ying
name: Wang, Shun-Zhi
name: Ge, Feng-Jun
name: Wang, Qing
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The complete list of electroweak chiral Lagrangian up to order of p4 for left-right symmetric models with a neutral light higgs is provided. The connection of these operators to left and right gauge boson mixings and masses is made and their contribution to conventional generalized electroweak chiral Lagrangian with a neutral light higgs included in is estimated.
Trapped electrons and ions as particle detectors
Creators: name: Carney, Daniel
name: Häffner, Hartmut
name: Moore, David C.
name: Taylor, Jacob M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Electrons and ions trapped with electromagnetic fields have long served as important high-precision metrological instruments, and more recently have also been proposed as a platform for quantum information processing. Here we point out that these systems can also be used as highly sensitive detectors of passing charged particles, due to the combination of their extreme charge-to-mass ratio and low-noise quantum readout and control. In particular, these systems can be used to detect energy depositions many orders of magnitude below typical ionization scales. As illustrations, we suggest some applications in particle physics. We outline a non-destructive time-of-flight measurement capable of sub-eV energy resolution for slowly moving, collimated particles. We also show that current devices can be used to provide competitive sensitivity to models where ambient dark matter particles carry small electric millicharges $\ll e$. Our calculations may also be useful in the characterization of noise in quantum computers coming from backgrounds of charged particles.
description: 4 pages, 3 figures. v2: published version, now includes time-of-flight measurement application and more detailed comments on millicharged DM at q > 10^-5
A Broad Empirical Study of IT Security Practioners
Creators: name: Beznosov, Konstantin
Publisher: name: Zenodo
Year: 2008
Subjects: HOT Admin
Security Tools
Usable Security
Qualitative Analysis

description: Security of information technology (IT) has become a critical issue for organizations as they must protect their information assets from unauthorized access and quickly resume business activities after a security breach. In order for technological solutions to provide effective support to IT security practitioners, tool developers need to understand better not only the technical, but also the human and organizational dimensions of IT security. To date, there is little empirical evidence about how human, organizational, and technological factors impact the processes of managing IT security. Moreover, little is known about the responsibilities and roles of security practitioners or the effectiveness of their tools and security management practices. The Human, Organization, and Technology Centred Improvement of IT Security Administration (HOT Admin) research project is working to fill this gap.
Stability of vortex solitons in thermal nonlinear media with cylindrical symmetry
Creators: name: Kartashov, Yaroslav V.
name: Vysloukh, Victor A.
name: Torner, Lluis
Publisher: name: arXiv
Year: 2007
Subjects: subject: Optics (physics.optics)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: We analyze the salient features of vortex-ring solitons supported by cylindrically symmetric media with nonlocal thermal nonlinearity. We discover the existence of a maximum allowed topological charge for such vortex solitons to be stable on propagation: Only vortex-ring solitons with topological charge m<=2 are found to be stable. This remarkable result holds independently of the radius of the sample.
description: 7 pages, 4 figures
Stellar population synthesis of post-AGB stars: the s-process in MACHO47.2496.8
Creators: name: Marinovic, A. Bonacic
name: Lugaro, M.
name: Reyniers, M.
name: Van Winckel, H.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The low-metallicity RV Tauri star MACHO47.2496.8, recently discovered in the Large Magellanic Cloud, is highly enriched in carbon and heavy elements produced by the slow neutron capture process (s-process), and is most probably a genuine post-C(N-type) asymptotic giant branch (AGB) star. We use the analysis of the abundances of MACHO47.2496.8 to constrain free parameters in AGB models. We test which values of the free parameters describing uncertain physical mechanisms in AGB stars, namely the third dredge-up and the features of the 13C neutron source, produce models that better match the abundances observed in MACHO47.2496.8. We carry out stellar population synthesis coupled with s-process nucleosynthesis using a synthetic stellar evolution code. The s-process ratios observed in MACHO47.2496.8 can be matched by the same models that explain the s-process ratios of Galactic AGB and post-AGB stars of metallicity > Z_sun/10, except for the choice of the effectiveness of 13C as a neutron source, which has to be lower by roughly a factor of 3 to 6. The less effective neutron source for lower metallicities is also required when comparing population synthesis results to observations of Galactic halo $s$-enhanced stars, such as Pb stars. The 12C/13C ratio in MACHO47.2496.8 cannot be matched simultaneously and requires the occurrence of extra-mixing processes. The confirmed trend of the decreased efficiency of the 13C neutron source with metallicity requires an explanation from AGB s-process models. The present work is to date the first comparison between theoretical models and the detailed abundances of an extragalactic post-AGB star.
description: accepted for publication on Astronomy & Astrophysics Letters
Good News for MOS, MXU & Co. - The New Spectroscopic Pipeline for the FORSes
Creators: name: Moehler, S.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Since October 1, 2006, spectroscopic data from the two FORS instruments have been reduced with a new pipeline, which is based on a bottom-up calibration approach. I give a short description of the pipeline and discuss first experiences with automatic data reduction using this software, which has significantly increased the percentage of processed data for both instruments. I will also describe possible new options for Quality Control.
description: 6 pages, 6 Postscript figures, uses svmult.cls (included), to appear in the proceedings of the 2007 ESO Instrument Calibration Workshop
Lepton Universality Tests with Kaons
Creators: name: Wanke, Rainer
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Precision data on Kl3 and Kl2 decay rates and form factors allow us to perform significant tests of lepton universality and to constrain the strength of non-standard interactions. The present status of these tests and new physics searches are discussed, as obtained by combining all the available results of the various kaon physics experiments.
description: 9 pages, to appear in Proceedings of Science (PoS) of KAON07 Conference; typos corrected
Statistical properties of dust far-infrared emission
Creators: name: Miville-Deschenes, M. -A.
name: Lagache, G.
name: Boulanger, F.
name: Puget, J. -L.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The description of the statistical properties of dust emission gives important constraints on the physics of the interstellar medium but it is also a useful way to estimate the contamination of diffuse interstellar emission in the cases where it is considered a nuisance. The main goals of this analysis of the power spectrum and non-Gaussian properties of 100 micron dust emission are 1) to estimate the power spectrum of interstellar matter density in three dimensions, 2) to review and extend previous estimates of the cirrus noise due to dust emission and 3) to produce simulated dust emission maps that reproduce the observed statistical properties. The main results are the following. 1) The cirrus noise level as a function of brightness has been previously overestimated. It is found to be proportional to  instead of ^1.5, where  is the local average brightness at 100 micron. This scaling is in accordance with the fact that the brightness fluctuation level observed at a given angular scale on the sky is the sum of fluctuations of increasing amplitude with distance on the line of sight. 2) The spectral index of dust emission at scales between 5 arcmin and 12.5 degrees is =-2.9 on average but shows significant variations over the sky. Bright regions have systematically steeper power spectra than diffuse regions. 3) The skewness and kurtosis of brightness fluctuations is high, indicative of strong non-Gaussianity. 4) Based on our characterization of the 100 micron power spectrum we provide a prescription of the cirrus confusion noise as a function of wavelength and scale. 5) Finally we present a method based on a modification of Gaussian random fields to produce simulations of dust maps which reproduce the power spectrum and non-Gaussian properties of interstellar dust emission.
description: 13 pages, 13 figures. Accepted for publication in A&A
A Time Independent Energy Estimate for Outgoing Scalar Waves in the Kerr Geometry
Creators: name: Finster, Felix
name: Smoller, Joel
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mathematical Physics (math-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The Cauchy problem for the scalar wave equation in the Kerr geometry is considered, with initial data which is smooth and compactly supported outside the event horizon. A time-independent energy estimate for the outgoing wave is obtained. As an application we estimate the outgoing energy for wave-packet initial data, uniformly as the support of the initial data is shifted to infinity. The main mathematical tool is our previously derived integral representation of the wave propagator.
description: 31 pages, LaTeX, minor changes (published version)
title: International trade and climate change: part of the problem or part of the solution?
Creators: name: Nardi, Cecilia
name: Consoli, Davide
name: Paglialunga, Elena
name: Cappelli, Federica
name: Marin, Giovanni
name: Fusacchia, Ilaria
name: Salvatici, Luca
name: Costantini, Valeria
Publisher: name: Roma TrE-Press
Year: 2021

description: La relazione tra commercio e cambiamento climatico è molto complessa e le interazioni tra i due fenomeni si manifestano in molteplici modi. I meccanismi sono sia diretti che indiretti e le caratteristiche globali degli impatti sul clima e le relative responsabilità incrementano le difficoltà interne al dibattito politico. A tal fine, una profonda conoscenza dei collegamenti tra settori e regioni come così come tra diversi livelli decisionali, è un prerequisito per gli esercizi di valutazione delle politiche climatiche e/o commerciali.
Leptoquarks and Matter Unification: Flavor Anomalies and the Muon $g-2$
Creators: name: Perez, Pavel Fileviez
name: Murgui, Clara
name: Plascencia, Alexis D.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We discuss the minimal theory for quark-lepton unification at the low scale. In this context, the quarks and leptons are unified in the same representations and neutrino masses are generated through the inverse seesaw mechanism. The properties of the leptoquarks predicted in this theory are discussed in detail and we investigate the predictions for the leptonic and semi-leptonic decays of mesons. We study the possibility to explain the current value of $\mathcal{R}_K$ reported by the LHCb collaboration and the value of the muon anomalous magnetic moment reported by the Muon $g-2$ experiment at Fermilab.
description: 19 pages, 7 figures. v2: Section 4 has been replaced and new references have been added. v3: New appendix and references added, to appear in PRD
Everyday algorithm auditing: Understanding the power of everyday users in surfacing harmful algorithmic behaviors
Creators: name: Shen, Hong
name: DeVos, Alicia
name: Eslami, Motahhare
name: Holstein, Kenneth
Publisher: name: arXiv
Year: 2021
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: Computers and Society (cs.CY)
subject: FOS: Computer and information sciences

description: A growing body of literature has proposed formal approaches to audit algorithmic systems for biased and harmful behaviors. While formal auditing approaches have been greatly impactful, they often suffer major blindspots, with critical issues surfacing only in the context of everyday use once systems are deployed. Recent years have seen many cases in which everyday users of algorithmic systems detect and raise awareness about harmful behaviors that they encounter in the course of their everyday interactions with these systems. However, to date little academic attention has been granted to these bottom-up, user-driven auditing processes. In this paper, we propose and explore the concept of everyday algorithm auditing, a process in which users detect, understand, and interrogate problematic machine behaviors via their day-to-day interactions with algorithmic systems. We argue that everyday users are powerful in surfacing problematic machine behaviors that may elude detection via more centrally-organized forms of auditing, regardless of users' knowledge about the underlying algorithms. We analyze several real-world cases of everyday algorithm auditing, drawing lessons from these cases for the design of future platforms and tools that facilitate such auditing behaviors. Finally, we discuss work that lies ahead, toward bridging the gaps between formal auditing approaches and the organic auditing behaviors that emerge in everyday use of algorithmic systems.
description: To appear in CSCW 2021. The co-first authors and co-senior authors each contributed equally to this work
Evolution of the cluster of primordial black holes within the Fokker-Planck approach
Creators: name: Stasenko, V. D.
name: Kirillov, A. A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The calculation results of the evolution of the cluster of primordial black holes based on the Fokker-Planck equation with neglecting of the gas accretion onto black holes are presented. In addition, we consider how a massive black hole located within the cluster center affects on its evolution. Despite it creates an additional potential in the central region of the cluster and might capture surrounding black holes, a negligible growth rate of a central black hole was shown for 1 Gyr. Furthermore, we find a significant (approximately tenfold) expansion of the cluster.
Topological Semimetals for Scaled Back-End-Of-Line Interconnect Beyond Cu
Creators: name: Chen, Ching-Tzu
name: Bajpai, Utkarsh
name: Lanzillo, Nicholas A.
name: Hsu, Chuang-Han
name: Lin, Hsin
name: Liang, Gengchiau
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: The resistance bottleneck in metal-interconnect scaling calls for new interconnect materials. This paper explores topological semimetals as a potential solution. After reviewing the desirable properties of topological semimetals for back-end-of-line (BEOL) interconnects, we use CoSi as an example to demonstrate the decreasing resistance-area product with scaling and provide material-search guidelines.
description: 4 pages, 12 figures
Natural compounds Camptothecin and Triptolide: highly specific enzyme inhibitors and tools to dissect transcriptional functions
Creators: name: Manzo, Stefano Giustino <1986>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2015
Subjects: BIO/11 Biologia molecolare

description: With this work I elucidated new and unexpected mechanisms of two strong and highly specific transcription inhibitors: Triptolide and Campthotecin. 
Triptolide (TPL) is a diterpene epoxide derived from the Chinese plant Trypterigium Wilfoordii Hook F. TPL inhibits the ATPase activity of XPB, a subunit of the general transcription factor TFIIH. In this thesis I found that degradation of Rbp1 (the largest subunit of RNA Polymerase II) caused by TPL treatments, is preceded by an hyperphosphorylation event at serine 5 of the carboxy-terminal domain (CTD) of Rbp1.  This event is concomitant with a block of RNA Polymerase II at promoters of active genes. The enzyme responsible for Ser5 hyperphosphorylation event is CDK7. Notably, CDK7 downregulation rescued both Ser5 hyperphosphorylation and Rbp1 degradation triggered by TPL. 
Camptothecin (CPT), derived from the plant Camptotheca acuminata, specifically inhibits topoisomerase 1 (Top1). We first found that CPT induced antisense transcription at divergent CpG islands promoter. Interestingly, by immunofluorescence experiments, CPT was found to induce a burst of R loop structures (DNA/RNA hybrids) at nucleoli and mitochondria. We then decided to investigate the role of Top1 in R loop homeostasis through a short interfering RNA approach (RNAi). Using DNA/RNA immunoprecipitation techniques coupled to NGS I found that Top1 depletion induces an increase of R loops at a genome-wide level. We found that such increase occurs on the entire gene body.  At a subset of loci R loops resulted particularly stressed after Top1 depletion: some of these genes showed the formation of new R loops structures, whereas other loci showed a reduction of R loops. Interestingly we found that new peaks usually appear at tandem or divergent genes in the entire gene body, while losses of R loop peaks seems to be a feature specific of 3’ end regions of convergent genes.
Analysis of Copy Number Variants identifies new candidate genes  for Autism Spectrum Disorder and Intellectual Disability
Creators: name: Lomartire, Silvia <1987>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2015
Subjects: BIO/18 Genetica

description: Autism spectrum disorder (ASD) and Intellectual Disability (ID) are complex neuropsychiatric disorders characterized by extensive clinical and genetic heterogeneity and with overlapping risk factors. 
The aim of my project was to further investigate the role of Copy Numbers Variants (CNVs), identified through genome-wide studies performed by the Autism Geome Project (AGP) and the CHERISH consortium in large cohorts of ASD and ID cases, respectively.
Specifically, I focused on four rare genic CNVs, selected on the basis of their impact on interesting ASD/ID candidate genes: a) a compound heterozygous deletion involving CTNNA3, predicted to cause the lack of functional protein; b) a 15q13.3 duplication containing CHRNA7; c) a 2q31.1 microdeletion encompassing KLHL23, SSB and METTL5; d) Lastly, I investigated the putative imprinting regulation of the CADPS2 gene, disrupted by a maternal deletion in two siblings with ASD and ID. 
This study provides further evidence for the role of CTNNA3, CHRNA7, KLHL23 and CADPS2 as ASD and/or ID susceptibility genes, and highlights that rare genetic variation contributes to disease risk in different ways: some rare mutations, such as those impacting CTNNA3, act in a recessive mode of inheritance, while other CNVs, such as those occurring in the 15q13.3 region, are implicated in multiple developmental and/or neurological disorders possibly interacting with other susceptibility variants elsewhere in the genome. On the other hand, the discovery of a tissue-specific monoallelic expression for the CADPS2 gene, implicates the involvement of epigenetic regulatory mechanisms as risk factors conferring susceptibility to ASD/ID.
Combining Set Propagation with Finite Element Methods for Time Integration in Transient Solid Mechanics Problems
Creators: name: Forets, Marcelo
name: Caporale, Daniel Freire
name: Zerpa, Jorge M. Pérez
Publisher: name: arXiv
Year: 2021
Subjects: subject: Numerical Analysis (math.NA)
subject: Computational Engineering, Finance, and Science (cs.CE)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: The Finite Element Method (FEM) is the gold standard for spatial discretization in numerical simulations for a wide spectrum of real-world engineering problems. Prototypical areas of interest include linear heat transfer and linear structural dynamics problems modeled with partial differential equations (PDEs). While different algorithms for direct integration of the equations of motion exist, exploring all feasible behaviors for varying loads, initial states and fluxes in models with large numbers of degrees of freedom remains a challenging task. In this article we propose a novel approach, based in set propagation methods and motivated by recent advances in the field of Reachability Analysis. Assuming a set of initial states and inputs, the proposed method consists in the construction of a union of sets (flowpipe) that enclose the infinite number of solutions of the spatially discretized PDE. We present the numerical results obtained in five examples to illustrate the capabilities of our approach, and compare its performance against reference numerical integration methods. We conclude that, for problems with single known initial conditions, the proposed method is accurate. For problems with uncertain initial conditions included in sets, the proposed method can compute all the solutions of the system more efficiently than numerical integration methods.
description: This is a major revision including the study of a new wave propagation problem. Run-time tables, pseudo-code and example code in Julia were also added
La cronique et histoire des mervilleuses aventures de Appolin roy de Thir (d’après le manuscrit de Londres, British Library, Royal 120 C II), édition critique par Vladimir Agrigoroaei, Turnhout, Brepols, 2013
Creators: name: Sacchi, Luca
Publisher: name: Università degli Studi di Milano
Year: 2015
Subjects: Historia Apollonii regis Tyr; volgarizzamento francese; french translation

description: Carte romanze, Vol 3, No 1 (2015)
The relative efficiencies of bars and clumps in driving disc stars to retrograde motion
Creators: name: Fiteni, Karl
name: Caruana, Joseph
name: Amarante, João A. S.
name: Debattista, Victor P.
name: Silva, Leandro Beraldo e
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The presence of stars on retrograde orbits in disc galaxies is usually attributed to accretion events, both via direct accretion, as well as through the heating of the disc stars. Recent studies have shown that retrograde orbits can also be produced via scattering by dense clumps, which are often present in the early stages of a galaxy's evolution. However, so far it has been unclear whether other internally-driven mechanisms, such as bars, are also capable of driving retrograde motion. Therefore, in this paper, we investigate the efficiencies with which bars and clumps produce retrograde orbits in disc galaxies. We do this by comparing the retrograde fractions and the spatial distributions of the retrograde populations in four $N$-body$+$smooth particle hydrodynamics (SPH) simulations of isolated disc galaxies spanning a range of evolutionary behaviours. We find that both bars and clumps are capable of generating significant retrograde populations of order $\sim 10\%$ of all stars. We also find that while clump-driven retrograde stars may be found at large galactocentric radii, bar-driven retrograde stars remain in the vicinity of the bar, even if the bar dissolves. Consequently, we find that retrograde stars in the Solar Neighbourhood in the clumpy models are exclusively clump-driven, but this is a trace population, constituting $0.01-0.04\%$ of the total stellar population in this region. Finally, we find that neither bars (including dissolving ones) nor clumps in the models are able to produce rotationally supported counter-rotating discs.
Colonoscopy Polyp Detection and Classification: Dataset Creation and Comparative Evaluations
Creators: name: Li, Kaidong
name: Fathan, Mohammad I.
name: Patel, Krushi
name: Zhang, Tianxiao
name: Zhong, Cuncong
name: Bansal, Ajay
name: Rastogi, Amit
name: Wang, Jean S.
name: Wang, Guanghui
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Colorectal cancer (CRC) is one of the most common types of cancer with a high mortality rate. Colonoscopy is the preferred procedure for CRC screening and has proven to be effective in reducing CRC mortality. Thus, a reliable computer-aided polyp detection and classification system can significantly increase the effectiveness of colonoscopy. In this paper, we create an endoscopic dataset collected from various sources and annotate the ground truth of polyp location and classification results with the help of experienced gastroenterologists. The dataset can serve as a benchmark platform to train and evaluate the machine learning models for polyp classification. We have also compared the performance of eight state-of-the-art deep learning-based object detection models. The results demonstrate that deep CNN models are promising in CRC screening. This work can serve as a baseline for future research in polyp detection and classification.
Theoretical treatments of fusion processes in collisions of weakly bound nuclei
Creators: name: Canto, L. F.
name: Donangelo, R.
name: Hussein, M. S.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We review the theoretical methods to evaluate fusion cross sections in collisions of weakly bound nuclei. We piont out that in such collisions the coupling to the breakup channel leads to the appearance of different fusion processes. The extentsion of the coupled-channel method to coupling with the continuum is the most successful treatment for these collisions. However, evaluating separate cross section for each fusion process remains a very hard task.
description: 8 pages, 3 figures. Invited talk (LFC) at the IX International Conference on Nucleus-Nucleus Collisions, Rio de Janeiro, August 28- September 1, 2006. Nuclear Physics A, in press
Unravelling the morphologies of Luminous Compact Galaxies using the HST/ACS GOODS survey
Creators: name: Rawat, A.
name: Kembhavi, A. K.
name: Hammer, F.
name: Flores, H.
name: Barway, S.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: (Abridged) Luminous Compact Galaxies (LCGs) (M_B < -20, R_{1/2} < 4.5kpc and EW_{0}(OII) >15Å) constitute one of the most rapidly evolving galaxy populations over the last ~8 Gyr history of the universe. Due to their inherently compact sizes, any detailed quantitative analysis of their morphologies has proved to be difficult in the past. In this work we use the high angular resolution imaging data, from the HST/ACS GOODS survey, to study the quantitative morphology of a complete sample of LCGs in the redshift range 0.5 < z < 1.2. We have derived structural parameters for a representative sample of 39 LCGs selected from the GOODS-S field, using full 2-dimensional surface brightness profile fitting of the galaxy images in each of the four filters available. B-z color maps are used as an aid in the morphological classification. We then use the rest frame B band bulge flux fraction (B/T) to determine the morphological class of the galaxies. Mergers were essentially identified visually by the presence of multiple maxima of comparable intensity in the rest frame B band images, aided by the color maps to distinguish them from HII regions. We derive the following morphological mix for our sample of intermediate redshift LCGs: Mergers: ~36%, Disk dominated: ~22%, S0: ~20%, Early types: ~7%, Irr/tadpole: ~15%. We establish that our sample LCGs are intermediate mass objects with a median stellar mass of Log(M/M_{\odot})=10.32. We also derive dust enshrouded SFR values ranging from a few to ~65 $M_{\odot}$/year using Spitzer 24$μm$ data. We estimate a factor ~11 fall in the comoving number density of blue LCGs from redshifts 0.5 < z < 1.2 to the current epoch. We finally discuss the evolutionary scenario of these LCGs which might give us some clues regarding their descendants in the local universe.
description: Accepted for publication in A&A. 24 Pages, 10 figures. Fits files of sample galaxies available at http://www.iucaa.ernet.in/~rawat/lcg_1.html