cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Topological Insulators-Based Magnetic Heterostructure
Creators: name: Yao, Qi
name: Ji, Yuchen
name: Chen, Peng
name: He, Qing-Lin
name: Kou, Xufeng
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The combination of magnetism and topology in magnetic topological insulators (MTIs) has led to unprecedented advancements of time reversal symmetry-breaking topological quantum physics in the past decade. Compared with the uniform films, the MTI heterostructures provide a better framework to manipulate the spin-orbit coupling and spin properties. In this review, we summarize the fundamental mechanisms related to the physical orders host in (Bi,Sb)2(Te,Se)3-based hybrid systems. Besides, we provide an assessment on the general strategies to enhance the magnetic coupling and spin-orbit torque strength through different structural engineering approaches and effective interfacial interactions. Finally, we offer an outlook of MTI heterostructures-based spintronics applications, particularly in view of their feasibility to achieve room-temperature operation.
description: 33 pages, 11 figures
Statistical Physics Algorithms for Traffic Reconstruction
Creators: name: De La Fortelle, Arnaud
name: Lasgouttes, Jean-Marc
name: Furtlehner, Cyril
Publisher: name: arXiv
Year: 2006
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics

description: Concepts and techniques from statistical physics inspired a new method for traffic prediction. This method is particularly suitable in settings where the only information available is floating car data. We propose a system, based on the Ising model of statistical physics, which both reconstructs and predicts the traffic in real time using a message-passing algorithm.
Efficient Real-Time Radial Distortion Correction for UAVs
Creators: name: Örnhag, Marcus Valtonen
name: Persson, Patrik
name: Wadenbäck, Mårten
name: Åström, Kalle
name: Heyden, Anders
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: In this paper we present a novel algorithm for onboard radial distortion correction for unmanned aerial vehicles (UAVs) equipped with an inertial measurement unit (IMU), that runs in real-time. This approach makes calibration procedures redundant, thus allowing for exchange of optics extemporaneously. By utilizing the IMU data, the cameras can be aligned with the gravity direction. This allows us to work with fewer degrees of freedom, and opens up for further intrinsic calibration. We propose a fast and robust minimal solver for simultaneously estimating the focal length, radial distortion profile and motion parameters from homographies. The proposed solver is tested on both synthetic and real data, and perform better or on par with state-of-the-art methods relying on pre-calibration procedures.
Theory of cosmic ray production in the supernova remnant RX J1713.7-3946
Creators: name: Berezhko, E. G.
name: Voelk, H. J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: A nonlinear kinetic theory of cosmic ray (CR) acceleration in supernova remnants (SNRs) is employed to investigate the properties of SNR RX J1713.7-3946. Observations of the nonthermal radio and X-ray emission spectra as well as the H.E.S.S. measurements of the very high energy gamma-ray emission are used to constrain the astronomical and the particle acceleration parameters of the system. Under the assumptions that RX J1713.7-3946 was a core collapse supernova (SN) of type II/Ib with a massive progenitor, has an age of \approx 1600 yr and is at a distance of \approx 1 kpc, the theory gives indeed a consistent description for all the existing observational data. Specifically it is shown that an efficient production of nuclear CRs, leading to strong shock modification, and a large downstream magnetic field strength B_d ~ 100 mkG can reproduce in detail the observed synchrotron emission from radio to X-ray frequencies together with the gamma-ray spectral characteristics as observed by the H.E.S.S. telescopes. Small-scale filamentary structures observed in nonthermal X-rays provide empirical confirmation for the field amplification scenario which leads to a strong depression of the inverse Compton and Bremsstrahlung fluxes. Going beyond that and using a semi-empirical relation for young SNRs between the resulting CR pressure and the amplified magnetic field energy upstream of the outer SN shock as well as a moderate upper bound for the mechanical explosion energy, it is possible to also demonstrate the actual need for a considerable shock modification in RX J1713.7-3946. It is consistent with RX J1713.7-3946 being an efficient source of nuclear cosmic rays.
description: 11 pages, 8 figures, Accepted for publication in Astronomy and Astrophysics
New features in the phase diagram of TbMnO$_3$
Creators: name: Meier, D.
name: Aliouane, N.
name: Argyriou, D. N.
name: Mydosh, J. A.
name: Lorenz, T.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The (H,T)-phase diagram of the multiferroic perovskite TbMnO$_3$ was studied by high-resolution thermal expansion $α(T)$ and magnetostriction $ΔL(H)/L$ measurements. Below $T_{N}\simeq 42$ K, TbMnO$_3$ shows antiferromagnetic order, which changes at $T_{FE}\simeq 28$ K where simultaneously a spontaneous polarization $P||c$ develops. Sufficiently high magnetic fields applied along $a$ or $b$ induce a polarization flop to $P||a$. We find that all of these transitions are strongly coupled to the lattice parameters. Thus, our data allow for a precise determination of the phase boundaries and also yield information about their uniaxial pressure dependencies. The strongly hysteretic phase boundary to the ferroelectric phase with $P||a$ is derived in detail. Contrary to previous reports, we find that even in high magnetic fields there are no direct transitions from this phase to the paraelectric phase. We also determine the various phase boundaries in the low-temperature region related to complex reordering transitions of the Tb moments.
description: 17 pages including 9 figures
Timed Quorum System for Large-Scale and Dynamic Environments
Creators: name: Gramoli, Vincent
name: Raynal, Michel
Publisher: name: arXiv
Year: 2008
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: This paper presents Timed Quorum System (TQS), a new quorum system especially suited for large-scale and dynamic systems. TQS requires that two quorums intersect with high probability if they are used in the same small period of time. It proposed an algorithm that implements TQS and that verifies probabilistic atomicity: a consistency criterion that requires each operation to respect atomicity with high probability. This TQS implementation has quorum of size O(\sqrt{nD}) and expected access time of O(log \sqrt{nD}) message delays, where n measures the size of the system and D is a required parameter to handle dynamism.
The New Sigma_b multiplet, heavy baryon mass predictions, meson-baryon universality and magnetic moments of Lambda_c and Lambda_b
Creators: name: Karliner, Marek
name: Lipkin, Harry J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The recent measurement by CDF M(Sigma_b)-M(Lambda_b)=192 MeV is in striking agreement with our theoretical prediction M(Sigma_b)-M(Lambda_b) = 194 MeV. In addition, the measured splitting M(Sigma_b*)-M(Sigma_b) = 21 MeV agrees well with the predicted splitting of 22 MeV. We point out the connection between these predictions and an effective supersymmetry between mesons and baryons related by replacing a light antiquark by a light diquark. We discuss the theoretical framework behind these predictions and use it to provide additional predictions for the masses of spin-1/2 and spin-3/2 baryons containing heavy quarks, as well as magnetic moments of Lambda_b and Lambda_c.
description: Updated section on doubly strange diquarks
Machine Learning Uncertainty as a Design Material: A Post-Phenomenological Inquiry
Creators: name: Benjamin, Jesse Josua
name: Berger, Arne
name: Merrill, Nick
name: Pierce, James
Publisher: name: arXiv
Year: 2021
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: Computers and Society (cs.CY)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences
subject: H.5.0

description: Design research is important for understanding and interrogating how emerging technologies shape human experience. However, design research with Machine Learning (ML) is relatively underdeveloped. Crucially, designers have not found a grasp on ML uncertainty as a design opportunity rather than an obstacle. The technical literature points to data and model uncertainties as two main properties of ML. Through post-phenomenology, we position uncertainty as one defining material attribute of ML processes which mediate human experience. To understand ML uncertainty as a design material, we investigate four design research case studies involving ML. We derive three provocative concepts: thingly uncertainty: ML-driven artefacts have uncertain, variable relations to their environments; pattern leakage: ML uncertainty can lead to patterns shaping the world they are meant to represent; and futures creep: ML technologies texture human relations to time with uncertainty. Finally, we outline design research trajectories and sketch a post-phenomenological approach to human-ML relations.
description: Accepted to ACM 2021 CHI Conference on Human Factors in Computing Systems (CHI 2021)
The MeerKAT Fornax Survey V. H i kinematics and Fornax cluster membership of the dwarf galaxy ESO 358-60
Creators: name: Kamphuis, P.
name: Serra, P.
name: Kleiner, D.
name: Dettmar, R. -J.
name: Józsa, G. I. G.
Publisher: name: arXiv
Year: 2025
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The MeerKAT Fornax Survey (MFS) is a large survey project mapping the HI in the Fornax cluster. Most of the cluster members detected in HI show significant signs of interaction with the intra-cluster medium or other galaxies. The galaxy ESO 358-60 however stands out as its large HI disk appears regular and undisturbed. A possible explanation for this undisturbed disk is that the galaxy is not in Fornax.
 We analyze the HI distribution within and around ESO 358-60 based on the MFS observations. We visually inspect the low resolution data in order to study the HI disk from the center to its outskirts and look for low column density gas that could reveal recent interactions. We then construct a detailed parameterization of the HI disk by fitting a tilted ring model to the high resolution data cube. We use the fitted rotational velocity to place the galaxy on the baryonic Tully-Fisher relationship. By equating the galaxy's HI and 3.6 $μ$m fluxes to the thus retrieved baryonic mass, we obtain a redshift independent distance.
 Our modeling confirms the regularity of the HI disk in ESO 358-60 but also shows that the galaxy contains a significant line of sight warp and contains radial motions, of the order of 10 km s$^{-1}$, that cover the extent of the optical disk. From the modeling we obtain a velocity V$_{\rm flat} = $48.1 $\pm$ 1.4 km s$^{-1}$ for the best fit rotation curve. This leads to a distance from the baryonic Tully-Fisher relation of 9.4 $\pm$ 2.5 Mpc,$\sim$ 10 Mpc less than the distance to the Fornax cluster. This distance not only fits better with V$_{\rm flat}$ but also with the overall HI distribution of low mass galaxies and the fact that the galaxy appears undisturbed and reasonably symmetric. At 9.4 Mpc ESO 358-60 cannot be a member of the Fornax cluster but is a foreground field galaxy.
description: Accepted for publication by Astronomy \& Astrophysics on 6 March 2025
Maternal adaptation to parenting a child with asthma
Creators: name: Taylor, Eileen M.
Publisher: name: University of British Columbia
Year: 2009

description: The purpose of this study was to investigate the adaptation of mothers to parenting an asthmatic child. Involving three co-researchers, a case study design was used to explore their experience of this phenomenon. The co-researchers were selected on the basis of these criteria: their child had been diagnosed with asthma within the last five years; the child's asthma had been diagnosed as "moderate" to "severe"; although more than one child in the family may have been diagnosed as asthmatic, it was possible to isolate the process of maternal adaptation to the one child; the mother had reached a point of feeling adequate in the role of mothering the asthmatic child. The participants were invited to create a lifeline of the experience, and to use this as a reference when describing the story of their adaptation. Upon completion of their narrative, questions were asked based on my pre-suppositions of the experience of adaptation, should these not have emerged previously during the interview. The narratives were audio-taped, transcribed, and analyzed for common emergent themes. Validiation interviews were conducted in order to confirm the emergent themes. An abstraction of one narrative, selected as representative of the three, was developed and validated by the co-researcher. This abstract portrayed the commonality of the process as well as the emergent themes. The study confirmed the existence of a process of adaptation marked by three phases. The stories revealed a movement from inadequacy to adequacy. The initial phase was dominated by negativity reflecting the mothers' sense of overwhelming impotence. The active middle phase, a phase of transition, was one in which the mothers increasingly became agents in the management of their child and their child's illness. This phase offered them opportunities to change their perception of themselves and their situation. The resolution of the middle phase placed the women in the final phase, where the themes of inadequacy found in the initial phase are opposed by the complementary positive themes of competency, strength and understanding. Underlying the themes contained within the three phases were ongoing themes which facilitated and provided a backdrop for this process. This study confirms the significant impact that the presence of an asthmatic child has on the life of the mother. The findings reveal the need for understanding and support from those around her as she struggles to gain a measure of control in this experience.
Random Covering Sets in Metric Space with Exponentially Mixing Property
Creators: name: Hu, Zhang-nan
name: Li, Bing
Publisher: name: arXiv
Year: 2020
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics

description: Let $\{B(ξ_n,r_n)\}_{n\ge1}$ be a sequence of random balls whose centers $\{ξ_n\}_{n\ge1}$ is a stationary process, and $\{r_n\}_{n\ge1}$ is a sequence of positive numbers decreasing to 0. Our object is the random covering set $E=\limsup\limits_{n\to\infty}B(ξ_n,r_n)$, that is, the points covered by $B(ξ_n,r_n)$ infinitely often. The sizes of $E$ are investigated from the viewpoint of measure, dimension and topology.
Precision Calculations for Future Colliders
Creators: name: Baur, U.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: I discuss the motivations for, and the status of, precision calculations for the Large Hadron Collider (LHC) and the planned International Linear Collider (ILC).
description: latex, uses ws-ijmpe.cls, 19 pages, 9 figures, 1 table, based on a talk given at the symposium "50 Years of High Energy Physics at UB", to appear in International Journal of Modern Physics E
Near-IR variability properties of a selected sample of AGB stars
Creators: name: Jiménez-Esteban, F. M.
name: García-Lario, P.
name: Engels, D.
name: Manchado, A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the results of a near-infrared monitoring programme of a selected sample of stars, initially suspected to be Mira variables and OH/IR stars, covering more than a decade of observations. The objects monitored cover the typical range of IRAS colours shown by O-rich stars on the Asymptotic Giant Branch and show a surprisingly large diversity of variability properties. 16 objects are confirmed as large-amplitude variables. Periods between 360 and 1800 days and typical amplitudes from 1 to 2 magnitudes could be determined for nine of them. In three light curves we find a systematic decrease of the mean brightness, two light curves show pronounced asymmetry. One source, IRAS 07222-2005, shows infrared colours typical of Mira variables but pulsates with a much longer period (approx. 1200 days) than a normal Mira. Two objects are ither close to (IRAS 03293+6010) or probably in (IRAS 18299-1705) the post-AGB phase. In IRAS 16029-3041 we found a systematic increase of the H-K colour of approximately 1 magnitude, which we interpret as evidence of a recent episode of enhanced mass loss. IRAS 18576+0341, a heavily obscured Luminous Blue Variable was also monitored. The star showed a continued decrease of brightness over a period of 7 years (1995 - 2002).
description: 9 pages + 3 appendix, 36 figures, photometry table, accepted in Astronomy & Astrophysics
Carrier Dynamics in Submonolayer InGaAs/GaAs Quantum Dots
Creators: name: Xu, Zhangcheng
name: Zhang, Yating
name: Hvam, J{$1}rn M.
name: Xu, Jingjun
name: Chen, Xiaoshuang
name: Lu, Wei
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Carrier dynamics of submonolayer (SML) InGaAs/GaAs quantum dots (QDs) were studied by micro-photoluminecence (MPL), selectively excited photoluminescence (SEPL), and time-resolved photoluminescence (TRPL). MPL and SEPL show the coexistence of localized and delocalized states, and different local phonon modes. TRPL reveal shorter recombination lifetimes and longer capture times for the QDs with higher emission energy. This suggests that the smallest SML QDs are formed by perfectly vertically correlated 2D InAs islands, having the highest In content and the lowest emission energy, while a slight deviation from the perfectly vertical correlation produces larger QDs with lower In content and higher emission energy.
description: 12 pages, 5 figures
f2IMU-R: Pedestrian Navigation by Low-cost Foot-Mounted Dual IMUs and Inter-foot Ranging
Creators: name: Zhu, Maoran
name: Wu, Yuanxin
name: Luo, Shitu
Publisher: name: arXiv
Year: 2020
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: Systems and Control (eess.SY)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Foot-mounted inertial sensors become popular in many indoor or GPS-denied applications, including but not limited to medical monitoring, gait analysis, soldier and first responder positioning. However, the foot-mounted inertial navigation relies largely on the aid of Zero Velocity Update (ZUPT) and has encountered inherent problems such as heading drift. This paper implements a pedestrian navigation system based on dual foot-mounted low-cost inertial measurement units (IMU) and inter-foot ultrasonic ranging. The observability analysis of the system is performed to investigate the roles of the ZUPT measurement and the foot-to-foot ranging measurement in improving the state estimability. A Kalman-based estimation algorithm is mechanized in the Earth frame, rather than in the common local-level frame, which is found to be effective in depressing the linearization error in Kalman filtering. An ellipsoid constraint in the Earth frame is also proposed to further restrict the height drift. Simulation and real field experiments show that the proposed method has better robustness and positioning accuracy (about 0.1-0.2% travelled distance) than the traditional pedestrian navigation schemes do.
description: 14 pages, 21 figures
Synchronization in a neuronal feedback loop through asymmetric temporal delays
Creators: name: Brandt, Sebastian F.
name: Pelster, Axel
name: Wessel, Ralf
Publisher: name: arXiv
Year: 2007
Subjects: subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: We consider the effect of asymmetric temporal delays in a system of two coupled Hopfield neurons. For couplings of opposite signs, a limit cycle emerges via a supercritical Hopf bifurcation when the sum of the delays reaches a critical value. We show that the angular frequency of the limit cycle is independent of an asymmetry in the delays. However, the delay asymmetry determines the phase difference between the periodic activities of the two components. Specifically, when the connection with negative coupling has a delay much larger than the delay for the positive coupling, the system approaches in-phase synchrony between the two components. Employing variational perturbation theory (VPT), we achieve an approximate analytical evaluation of the phase shift, in good agreement with numerical results.
description: 5 pages, 4 figures
Revisiting profile instability of J1022+1001
Creators: name: Padmanabh, Prajwal V.
name: Barr, Ewan D.
name: Champion, David J.
name: Karuppusamy, Ramesh
name: Kramer, Michael
name: Jessner, Axel
name: Lazarus, Patrick
Publisher: name: arXiv
Year: 2020
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Millisecond pulsars in timing arrays can act as probes for gravitational wave detection and improving the solar system ephemerides among several other applications. However, the stability of the integrated pulse profiles can limit the precision of the ephemeris parameters and in turn the applications derived from it. It is thus crucial for the pulsars in the array to have stable integrated pulse profiles. Here we present evidence for long-term profile instability in PSR J1022+1001 which is currently included in the European and Parkes pulsar timing arrays. We apply a new evaluation method to an expanded data set ranging from the Effelsberg Pulsar Observing System back-end used in the 1990s to that of data from the current PSRIX backend at the Effelsberg Radio Telescope. We show that this intrinsic variability in the pulse shape persists over time scales of years. We investigate if systematic instrumental effects like polarisation calibration or signal propagation effects in the interstellar medium causes the observed profile instability. We find that the total variation cannot be fully accounted for by instrumental and propagation effects. This suggests additional intrinsic effects as the origin for the variation. We finally discuss several factors that could lead to the observed behaviour and comment on the consequent implications.
description: 10 pages, 8 figures, Accepted for publication in MNRAS
CO oxidation on Pd(100) at technologically relevant pressure conditions: A first-principles kinetic Monte Carlo study
Creators: name: Rogal, Jutta
name: Reuter, Karsten
name: Scheffler, Matthias
Publisher: name: arXiv
Year: 2008
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The possible importance of oxide formation for the catalytic activity of transition metals in heterogenous oxidation catalysis has evoked a lively discussion over the recent years. On the more noble transition metals (like Pd, Pt or Ag) the low stability of the common bulk oxides suggests primarily sub-nanometer thin oxide films, so-called surface oxides, as potential candidates that may be stabilized under gas phase conditions representative of technological oxidation catalysis. We address this issue for the Pd(100) model catalyst surface with first-principles kinetic Monte Carlo (kMC) simulations that assess the stability of the well-characterized (sqrt{5} x sqrt{5})R27 surface oxide during steady-state CO oxidation. Our results show that at ambient pressure conditions the surface oxide is stabilized at the surface up to CO:O2 partial pressure ratios just around the catalytically most relevant stoichiometric feeds (p(CO):p(O2) = 2:1). The precise value depends sensitively on temperature, so that both local pressure and temperature fluctuations may induce a continuous formation and decomposition of oxidic phases during steady-state operation under ambient stoichiometric conditions.
description: 13 pages including 5 figures; related publications can be found at http://www.fhi-berlin.mpg.de/th/th.html
Efficient Generation of Subnatural-Linewidth Biphotons by Controlled Quantum Interference
Creators: name: Chinnarasu, Ravikumar
name: Liu, Chi-Yang
name: Ding, Yi-Feng
name: Lee, Chuan-Yi
name: Hsieh, Tsung-Hua
name: Yu, Ite A.
name: Chuu, Chih-Sung
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: Biphotons of narrow bandwidth and long temporal length play a crucial role in long-distance quantum communication (LDQC) and linear optical quantum computing (LOQC). However, generation of these photons usually requires atomic ensembles with high optical depth or spontaneous parametric down-conversion with sophisticated optical cavity. By manipulating the two-component biphoton wavefunction generated from a low-optical-depth (low-OD) atomic ensemble, we demonstrate biphotons with subnatural linewidth in the sub-MHz regime. The potential of shaping and manipulating the quantum wavepackets of these temporally long photons is also demonstrated and discussed. Our work has potential applications in realizing quantum repeaters and large cluster states for LDQC and LOQC, respectively. The possibility to generate and manipulate subnatural-linewidth biphotons with low OD also opens up new opportunity to miniaturize the biphoton source for implementing quantum technologies on chip-scale quantum devices.
description: 7 pages, 5 figures
Recursion representation of the Neveu-Schwarz superconformal block
Creators: name: Hadasz, Leszek
name: Jaskolski, Zbigniew
name: Suchanek, Paulina
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Four-point super-conformal blocks for the N = 1 Neveu-Schwarz algebra are defined in terms of power series of the even super-projective invariant. Coefficients of these expansions are represented both as sums over poles in the "intermediate" conformal weight and as sums over poles in the central charge of the algebra. The residua of these poles are calculated in both cases. Closed recurrence relations for the block coefficients are derived.
description: 20 pages
Franck-Condon tuning of optical cycling centers by organic functionalization
Creators: name: Dickerson, Claire E.
name: Guo, Han
name: Shin, Ashley J.
name: Augenbraun, Benjamin L.
name: Caram, Justin R.
name: Campbell, Wesley C.
name: Alexandrova, Anastassia N.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: Laser induced electronic excitations that spontaneously emit photons and decay directly to the initial ground state ("optical cycling transitions") are used in quantum information and precision measurement for state initialization and readout. To extend this primarily atomic technique to organic compounds, we theoretically investigate optical cycling of alkaline earth phenoxides and their functionalized derivatives. We find that optical cycle leakage due to wavefunction mismatch is low in these species, and can be further suppressed by using chemical substitution to boost the electron withdrawing strength of the aromatic molecular ligand through resonance and induction effects. This provides a straightforward way to use chemical functional groups to construct optical cycling moieties for laser cooling, state preparation, and quantum measurement.
description: 6 pages, 3 figures
Donor spins in silicon for quantum technologies
Creators: name: Morello, Andrea
name: Pla, Jarryd J.
name: Bertet, Patrice
name: Jamieson, David N.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Dopant atoms are ubiquitous in semiconductor technologies, providing the tailored electronic properties that underpin the modern digital information era. Harnessing the quantum nature of these atomic-scale objects represents a new and exciting technological revolution. In this article we describe the use of ion-implanted donor spins in silicon for quantum technologies. We review how to fabricate and operate single-atom spin qubits in silicon, obtaining some of the most coherent solid-state qubits, and we discuss pathways to scale up these qubits to build large quantum processors. Heavier group-V donors with large nuclear spins display electric quadrupole couplings that enable nuclear electric resonance, quantum chaos and strain sensing. Donor ensembles can be coupled to microwave cavities to develop hybrid quantum Turing machines. Counted, deterministic implantation of single donors, combined with novel methods for precision placement, will allow the integration of individual donors spins with industry-standard silicon fabrication processes, making implanted donors a prime physical platform for the second quantum revolution.
description: 18 pages, 11 figures, 134 references. Published in the special issue of Advanced Quantum Technologies "Advancing Quantum Technologies - Chances and Challenges" edited by Rainer Blatt
Herpesviruses in Neurodegenerative Disease and Dementia
Creators: name: Piotrowski, Stacey Lynn
Publisher: name: Purdue University Graduate School
Year: 2024
Subjects: classificationCode: 300910
subject: Veterinary pathology

description: Viruses have long been investigated for their possible associations with a multitude of neurodegenerative diseases. Recently, herpesviruses, such as human herpesvirus 6 (HHV-6) and Epstein-Barr virus (EBV), have been of growing interest as potential triggers or contributors in the pathogenesis of Alzheimer’s disease (AD) and other causes of dementia. The role that herpesviruses play in these disease processes remains unclear, with evidence for the infectious hypothesis of AD often ambiguous and strongly debated. Obtaining definitive evidence for the role of herpesviruses in AD and other dementia-related diseases remains challenging due to many factors, including the complexities of multifactorial diseases, the unique lifecycle of herpesviruses, and the lack of translational in vivo models of herpesvirus infection and AD. We investigated the potential association of herpesviruses with these diseases through the application of bioinformatic analyses and molecular techniques to human whole genome sequences (WGS) and the utilization of a nonhuman primate model, the common marmoset (Callithrix jacchus).We observed a higher prevalence of HHV-6 partial integration in synucleinopathies associated with dementia compared to other cohorts. We characterized Callitrichine herpesvirus 3 (CalHV-3) in the common marmoset as a translational model of gammaherpesvirus infection, highlighting similarities to human EBV infection. We described beta-amyloid (Ab) pathology in the brains of herpesvirus infected and uninfected marmosets. In marmosets infected with CalHV-3, we noted lower plasma Ab42:40 ratios and GFAP levels and a positive correlation between viral load and Ab42, Ab40, and total tau. These findings suggest that herpesviruses may play a role in dementia-related neurodegenerative diseases through multiple different mechanisms, including the integration of viral genomes and the alteration or augmentation of disease biomarkers.
CP Violation in Supersymmetric Theories: stop2->stop1 H H, stop2->stop1 Z Z, stop2->stop1 W+ W-, stop2->stop1 Z H
Creators: name: Szynkman, Alejandro
name: Kiers, Ken
name: London, David
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the decays stop2->stop1 H H, stop2->stop1 Z Z, stop2->stop1 W+ W- and stop2->stop1 Z H, with an eye towards measuring the CP-violating supersymmetric parameters contained in these processes. We find that stop2->stop1 H H tends to have the largest CP asymmetry and width, and is perhaps the most favourable experimentally. These decays are sensitive primarily to phi_At, the phase of the trilinear coupling A_t.
description: 15 pages, 3 figures. Comments added; figure changed. Analysis and conclusions unchanged
Το θέατρο ως μέσο ανάπτυξης της οπτικής παιδείας στα μουσεία:
Creators: name: Κοκορότσκου, Μαρία Γεωργίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2012
Subjects: Θέατρο
Μουσεία
Οπτική παιδεία
Theatre
Museums
Visual Literacy

description: Ο σκοπός της διατριβής αυτής είναι να διερευνήσει τις μεθόδους ανάπτυξης της οπτικής παιδείας στα μουσεία δια μέσου του θεάτρου. Παρουσιάζονται οι ιδιαιτερότητες εκείνες που στοιχειοθετούν τον εκπαιδευτικό χαρακτήρα του θεάτρου και παρουσιάζονται οι ιδιότητες εκείνες με τις οποίες δύναται να χρησιμοποιηθεί στη μουσειακή εκπαίδευση. Τέλος, πιο συγκεκριμένα, διερευνώνται οι θεατρικές φόρμες που είναι δυνατό να χρησιμοποιηθούν αποτελεσματικά για την ανάπτυξη της οπτικής παιδείας και οι τρόποι με τους οποίους αυτό μπορεί να επιτευχθεί.
description: The purpose of this study is to investigate methods of development of visual culture in museums using theater techniques. It presents those characteristics that constitute the educational aspect of theater and presents the properties to those which may be used in museum education. Finally, more specifically, it explores the theatrical forms that can be used effectively for the development of visual literacy and the ways in which this can be achieved.
Mystical experience of a counsellor : an autobiographical journey
Creators: name: Racine, Catherine
Publisher: name: University of British Columbia
Year: 2009

description: This autobiographical enquiry explores, and describes the process and impact of mystical experience on the life of a counsellor in training. What is this experience like? How does it affect a counsellor trained in mainstream academia? What can happen when the secular and the sacred converge during a counselling session? As a result of this experience, what are the conflicts and issues a counsellor might encounter regarding her role, and the counselling paradigm itself? The recent emergence of mystical experience in psychological literature, and the burgeoning of spirituality within mainstream counselling are beginning to challenge many assumptions on which our field is precariously perched. Mystical experience itself is being reported by significant numbers of clients, and a developing theory describes it as a positive and transforming phenomenon. However, there is a notable absence of therapists' voices regarding mystical experience which needs to be addressed if we are to be accountable to our clients, our peers, and ourselves. Using my own voice, and personal anecdotes, I examine this contentious and enigmatic experience to explore its role in my life and my work, and to illuminate some of the more significant issues it has raised for me.
Gamma-Ray Luminosity Function of Blazars and the Cosmic Gamma-Ray Background: Evidence for the Luminosity Dependent Density Evolution
Creators: name: Narumoto, Takuro
name: Totani, Tomonori
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a comprehensive study for the gamma-ray luminosity function (GLF) of blazars and their contribution to the extragalactic diffuse gamma-ray background (EGRB). Radio and gamma-ray luminosity correlation is introduced to take into account the radio detectability which is important for the blazar identification. Previous studies considered only pure luminosity evolution (PLE) or pure density evolution, but we introduce the luminosity dependent density evolution (LDDE) model, which is favored from the evolution of X-ray luminosity function (XLF) of AGNs. The model parameters are constrained by likelihood analyses about the observed redshift and gamma-ray flux distributions of the EGRET blazars. We find that the LDDE model gives a better fit to the observed distributions than the PLE model, indicating that the LDDE model is also appropriate for gamma-ray blazars, and that the jet activity is universally correlated with the accretion history of AGNs. The normalization between the GLF and XLF is consistent with the unified picture of AGNs, when the beaming and a reasonable duty cycle of jet activity are taken into account. We then find that only 25--50% of the EGRB can be explained by unresolved blazars with the best-fit LDDE parameters. Unresolved blazars can account for all the EGRB only with a steeper index of the faint-end slope of the GLF, which is marginally consistent with the EGRET data but inconsistent with that of the XLF. Therefore unresolved AGNs cannot be the dominant source of the EGRB, unless there is a new population of gamma-ray emitting AGNs that evolves differently from the XLF of AGNs. Predictions for the GLAST mission are made, and we find that the best-fit LDDE model predicts about 3000 blazars in the entire sky, which is considerably fewer than a previous estimate.
description: 13 pages, 12 figures, accepted by ApJ; minor typos corrected and some figures revised, main conclusions essentially unchanged
Geometrization of Quantum Mechanics
Creators: name: Carinena, J. F.
name: Clemente-Gallardo, J.
name: Marmo, G.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 81Q70

description: We show that it is possible to represent various descriptions of Quantum Mechanics in geometrical terms. In particular we start with the space of observables and use the momentum map associated with the unitary group to provide an unified geometrical description for the different pictures of Quantum Mechanics. This construction provides an alternative to the usual GNS construction for pure states.
description: 16 pages. To appear in Theor. Math. Phys. Some typos corrected. Definition 2 in page 5 rewritten
New analysis of semileptonic B decays in the relativistic quark model
Creators: name: Ebert, D.
name: Faustov, R. N.
name: Galkin, V. O.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present the new analysis of the semileptonic B decays in the framework of the relativistic quark model based on the quasipotential approach. Decays both to heavy D^{(*)} and light π(ρ) mesons are considered. All relativistic effects are systematically taken into account including contributions of the negative-energy states and the wave function transformation from the rest to moving reference frame. For heavy-to-heavy transitions the heavy quark expansion is applied. Leading and subleading Isgur-Wise functions are determined as the overlap integrals of initial and final meson wave functions. For heavy-to-light transitions the explicit relativistic expressions are used to determine the dependence of the form factors on the momentum transfer squared. Such treatment significantly reduces theoretical uncertainties and increases reliability of obtained predictions. All results for form factors, partial and total decay rates agree well with recent experimental data and unquenched lattice calculations. From this comparison we find the following values of the Cabibbo-Kobayashi-Maskawa matrix elements: |V_{cb}|=(3.85\pm0.15\pm 0.20)*10^{-2} and |V_{ub}|=(3.82\pm0.20\pm0.20)*10^{-3}, where the first error is experimental and the second one is theoretical.
description: 25 pages, 11 figures
VIDA: A simulation model of domestic VIolence in times of social DistAncing
Creators: name: Madeira, Lígia Mori
name: Furtado, Bernardo Alves
name: Dill, Alan Rafael
Publisher: name: arXiv
Year: 2021
Subjects: subject: Multiagent Systems (cs.MA)
subject: FOS: Computer and information sciences
subject: I.6.5; J.4

description: Violence against women occurs predominantly in the family and domestic context. The COVID-19 pandemic led Brazil to recommend and, at times, impose social distancing, with the partial closure of economic activities, schools, and restrictions on events and public services. Preliminary evidence shows that intense coexistence increases domestic violence, while social distancing measures may have prevented access to public services and networks, information, and help. We propose an agent-based model (ABM), called VIDA, to illustrate and examine multi-causal factors that influence events that generate violence. A central part of the model is the multi-causal stress indicator, created as a probability trigger of domestic violence occurring within the family environment. Two experimental design tests were performed: (a) absence or presence of the deterrence system of domestic violence against women and (b) measures to increase social distancing. VIDA presents comparative results for metropolitan regions and neighbourhoods considered in the experiments. Results suggest that social distancing measures, particularly those encouraging staying at home, may have increased domestic violence against women by about 10%. VIDA suggests further that more populated areas have comparatively fewer cases per hundred thousand women than less populous capitals or rural areas of urban concentrations. This paper contributes to the literature by formalising, to the best of our knowledge, the first model of domestic violence through agent-based modelling, using empirical detailed socioeconomic, demographic, educational, gender, and race data at the intraurban level (census sectors).
description: 20 pages, 3 figures, 4 tables
Padronização de metadados adotados no portal agregador de conteúdo científico Oasisbr
Creators: name: Marques, Gabriel Silveira
name: Santos, Blena Estevam dos
name: Cordeiro Matos de Lima, Millena
name: Teixeira de Morais, Cássio
name: Garcia de Souza, Marcel
Publisher: name: Zenodo
Year: 2024

description: Apresentação realizada na sessão Comunicação II, da 15ª Conferência Lusófona de Ciência Aberta, na Escola Superior de Enfermagem do Porto (ESEP), de 01 a 04 de outubro de 2024.
The Hyperdeterminant and Triangulations of the 4-Cube
Creators: name: Huggins, Peter
name: Sturmfels, Bernd
name: Yu, Josephine
name: Yuster, Debbie
Publisher: name: arXiv
Year: 2006
Subjects: subject: Combinatorics (math.CO)
subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics

description: The hyperdeterminant of format 2 x 2 x 2 x 2 is a polynomial of degree 24 in 16 unknowns which has 2894276 terms. We compute the Newton polytope of this polynomial and the secondary polytope of the 4-cube. The 87959448 regular triangulations of the 4-cube are classified into 25448 D-equivalence classes, one for each vertex of the Newton polytope. The 4-cube has 80876 coarsest regular subdivisions, one for each facet of the secondary polytope, but only 268 of them come from the hyperdeterminant.
description: 30 pages, 6 figures; An author's name changed, typos fixed
title: Revue d'études proustiennes. 2015-1, n° 1
title: Traduire À la recherche du temps perdu de Marcel Proust
titleType: Subtitle
Creators: name: (:Unap)
Publisher: name: Classiques Garnier
Year: 2015
Subjects: subject: Traductologie
subject: Théorie de la traduction
subject: Histoire de la traduction
subject: Linguistique
subject: Critique littéraire
subject: Stylistique

description: Cet ouvrage est une étude approfondie des traductions d'À la recherche du temps perdu de Marcel Proust dans une grande variété de langues, de l'allemand au turc. Spécialistes de Proust, traductologues et traducteurs se sont penchés sur les enjeux de la traduction et de la (re)traduction de l'œuvre.
description: This work is an in-depth study of translations of Proust's À la recherche du temps perdu in a wide variety of languages from German to Turkish. Specialists, traductologists, and translators have focused on the implications of the numerous translations and retranslations of the work.
Bibliography on Ice Cream, up to and Including the Year 1926
Creators: name: Sherfy, Carrie B.
name: Smallwood, Nell W.
name: Sherfy, Carrie B.
name: Smallwood, Nell W.
Publisher: name: Unknown
Year: 1928
Subjects: subject: Food Consumption/Nutrition/Food Safety
subject: Livestock Production/Industries
subject: Marketing
subject: FOS: Economics and business
subject: Research and Development/Tech Change/Emerging Technologies

description: Excerpts from the Preface: The output of the ice cream industry of the United States is now worth more than $400,000,000 annually. The trade in this commodity has increased rapidly in recent years and has become an important part of the dairy industry. With the increase in the consumption of ice cream has come also an increased number of problems to the ice cream manufacturer. The research work now being carried on in connection with these problems and the fact that the literature on ice cream is widely scattered, much of it in publications which are not indexed, have emphasized the need of a bibliography on the subject. In the following classified list of ice cream literature, compiled by Carrie B. Sherfy, Librarian of the Bureau of Dairy Industry, and her assistant, Nell W. Smallwood, an attempt has been made to bring together in a systematic way selected references from all literature dealing with ice cream and ices issued up to and including the year 1926, in so far as this material is available.
Τα προβλήματα των προγραμμάτων ανοιχτού λογισμικού και τα δικαιώματα προαίρεσης:
Creators: name: Οικονόμου, Ουρανία Μιλτιάδη
Publisher: name: Aristotle University of Thessaloniki
Year: 2012
Subjects: ανοιχτός κώδικας
δικαιώματα προαίρεσης
real options
open source

description: Η παρούσα διπλωματική εργασία ασχολείται με τα δικαιώματα προαίρεσης και πως αυτά μπορούν να συμβάλουν στην επίλυση των προβλημάτων που αντιμετωπίζουν τα προγράμματα ανοιχτού λογισμικού. Στην πρώτη ενότητα γίνεται παρουσίαση και ανάλυση της θεωρίας του ανοιχτού λογισμικού. Αφού γίνει αναλυτική περιγραφή των προβλημάτων που είναι πιθανόν να εμφανίσουν τα προγράμματα ανοιχτού λογισμικού κατά τη χρήση τους από τις επιχειρήσεις και διαχωρίζονται ανάλογα με τη φύση τους. Η δεύτερη ενότητα αφορά τα δικαιώματα προαίρεσης. Αρχικά γίνεται μια ανάλυση της θεωρίας των δικαιωμάτων προαίρεσης και παρουσιάζεται η ιστορική εξέλιξή τους. Στη συνέχεια γίνεται μια προσπάθεια συνδυασμού τους με τα προβλήματα των προγραμμάτων ανοιχτού λογισμικού καταλήγοντας στο συμπέρασμα ότι ολοένα και περισσότερο επισημαίνονται οι θετικές συνέπειες από τη χρήση των δικαιωμάτων από επιχειρήσεις που χρησιμοποιούν προγράμματα ανοιχτού λογισμικού.
description: This thesis discusses real options and how they can contribute to solving the problems of open source programs. In the first section we present and analyze the theory of open software. Once a detailed description of the problems that are likely to develop open source programs for use by business and separated according to their nature. The second section involves options. First is an analysis of the theory of options and presents the historical evolution. Then an attempt is made to combine the problems of open source programs, finding that increasingly highlights the positive effects of the use rights of enterprises using open source programs.