cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
ALMA hints at the presence of two companions in the disk around HD 100546
Creators: name: Walsh, Catherine
name: Juhasz, Attila
name: Pinilla, Paola
name: Harsono, Daniel
name: Mathews, Geoffrey S.
name: Dent, William R. F.
name: Hogerheijde, Michiel R.
name: Birnstiel, T.
name: Meeus, Gwendolyn
name: Nomura, Hideko
name: Aikawa, Yuri
name: Millar, T. J.
name: Sandell, Goran
Publisher: name: arXiv
Year: 2014
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: HD 100546 is a well-studied Herbig Be star-disk system that likely hosts a close-in companion with compelling observational evidence for an embedded protoplanet at 68 AU. We present ALMA observations of the HD 100546 disk which resolve the gas and dust structure at (sub)mm wavelengths. The CO emission (at 345.795 GHz) originates from an extensive molecular disk (390+/-20 AU in radius) whereas the continuum emission is more compact (230+/-20 AU in radius) suggesting radial drift of the mm-sized grains. The CO emission is similar in extent to scattered light images indicating well-mixed gas and um-sized grains in the disk atmosphere. Assuming azimuthal symmetry, a single-component power-law model cannot reproduce the continuum visibilities. The visibilities and images are better reproduced by a double-component model: a compact ring with a width of 21 AU centered at 26 AU and an outer ring with a width of 75+/-3 AU centered at 190+/-3 AU. The influence of a companion and protoplanet on the dust evolution is investigated. The companion at 10 AU facilitates the accumulation of mm-sized grains within a compact ring, ~ 20 - 30 AU, by ~ 10 Myr. The injection of a protoplanet at 1 Myr hastens the ring formation (~ 1.2 Myr) and also triggers the development of an outer ring (~ 100 - 200 AU). These observations provide additional evidence for the presence of a close-in companion and hint at dynamical clearing by a protoplanet in the outer disk.
description: Accepted for publication in the Astrophysical Journal Letters
Sometimes More is Too Much: A Rejoinder to the Commentaries on Greiff et al. (2015)
Creators: name: Greiff, S.
name: Stadler, Matthias
name: Sonnleitner, P.
name: Wolff, Christian
name: Martin, R.
Publisher: name: Universität Regensburg
Year: 2017
Subjects: subject: complex problem solving; multiple complex systems; Tailorshop; reasoning; intelligence; validity; structural equation modeling
subject: 370 Erziehung, Schul- und Bildungswesen

description: In this rejoinder, we respond to two commentaries on the study by Greiff, S.; Stadler, M.; Sonnleitner, P.; Wolff, C.; Martin, R. Sometimes less is more: Comparing the validity of complex problem solving measures. Intelligence 2015, 50, 100–113. The study was the first to address the important comparison between a classical measure of complex problem solving (CPS) and the more recent multiple complex systems (MCS) approach regarding their validity. In the study, we investigated the relations between one classical microworld as the initially developed method (here, the Tailorshop) with three more recently developed multiple complex systems (MCS; here, MicroDYN, Genetics Lab, and MicroFIN) tests. We found that the MCS tests showed higher levels of convergent validity with each other than with the Tailorshop even after reasoning was controlled for, thus empirically distinguishing between the two approaches. The commentary by Kretzschmar and the commentary by Funke, Fischer, and Holt expressed several concerns with how our study was conducted, our data was analyzed, and our results were interpreted. Whereas we acknowledge and agree with some of the more general statements made in these commentaries, we respectfully disagree with others, or we consider them to be at least partially in contrast with the existing literature and the currently available empirical evidence.
Factors Regulating the Growth of Algae in Continuous Culture in Diluted Secondary Sewage Treatment Plant Effluent and Subsequent Biodegradability
Creators: name: Foree, Edward G.
name: Wade, Caroline P.
Publisher: name: Kentucky Water Resources Research Institute, University of Kentucky
Year: 1971

description: Abstract:
Heterogeneous algal cultures were grown in laboratory continuous culture in continuous flow, completely mixed chemostats in secondary sewage treatment plant effluent diluted to give an ammonia nitrogen concentration of 10 mg/1. Variables were lighting, pH, carbon dioxide availability, and hydraulic residence time.
Optimum growth occurred under pH 7.0, excess CO2, and continuous lighting conditions. The availability of artificially supplied excess CO2 greatly increased the mass (standing crop) at steady-state over that produced under otherwise identical conditions for all residence times studied. For the case of excess CO2 availability, the nitrogen concentration in the algal cells regulated growth rather than the concentration of nutrients in solution. A mathematical expression was hypothesized to describe this phenomenon and was confirmed by the experimental results.
Under dark-aerobic conditions, the algal cultures exerted a two-stage BOD, the second stage apparently beginning after the death of the algal cells. Longer chemostat residence times during growth produced cultures with lower percentage biodegradability. Carbon dioxide enriched growth conditions produced cultures with lower percentage biodegradability than cultures grown in a carbon dioxide deficient medium.
Funding information: The work on which this report is based was supported in part by funds provided by the Office of Water Resources Research, United States Department of the Interior, as authorized under the Water Resources Research Act of 1964.
Heterogeneous pair-approximation for the contact process on complex networks
Creators: name: Mata, Angélica S.
name: Ferreira, Ronan S.
name: Ferreira, Silvio C.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Recent works have shown that the contact process running on the top of highly heterogeneous random networks is described by the heterogeneous mean-field theory. However, some important aspects as the transition point and strong corrections to the finite-size scaling observed in simulations are not quantitatively reproduced in this theory. We develop a heterogeneous pair approximation, the simplest mean-field approach that takes into account dynamical correlations, for the contact process. The transition points obtained in this theory are in very good agreement with simulations. The proximity with a simple homogeneous pair-approximation is elicited showing that the transition point in successive homogeneous cluster approximations moves away from the simulation results. We show that the critical exponents of the heterogeneous pair-approximation in the infinite-size limit are the same as those of the one-vertex theory. However, excellent matches with simulations, for a wide range of network sizes, is obtained when sub-leading finite-size corrections given by the new theory are explicitly taken into account. The present approach can be suited to dynamical processes on networks in general providing a profitable strategy to analytically assess fine-tuning theoretical corrections.
50 anos da morte de Che Guevara: um economista dedicado
Creators: name: Albertin de Moraes, Isaías
Publisher: name: figshare
Year: 2023
Subjects: Economic history
Socio-economic development
History of economic thought
Economic development policy
Latin and South American history

description:
 50 anos da morte de Che Guevara: um economista dedicado
Measuring neutron-star ellipticity with measurements of the stochastic gravitational-wave background
Creators: name: Talukder, Dipongkar
name: Thrane, Eric
name: Bose, Sukanta
name: Regimbau, Tania
Publisher: name: arXiv
Year: 2014
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Galactic neutron stars are a promising source of gravitational waves in the analysis band of detectors such as LIGO and Virgo. Previous searches for gravitational waves from neutron stars have focused on the detection of individual neutron stars, which are either nearby or highly non-spherical. Here we consider the stochastic gravitational-wave signal arising from the ensemble of Galactic neutron stars. Using a population synthesis model, we estimate the single-sigma sensitivity of current and planned gravitational-wave observatories to average neutron star ellipticity $ε$ as a function of the number of in-band Galactic neutron stars $N_\text{tot}$. For the plausible case of $N_\text{tot}\approx 53000$, and assuming one year of observation time with colocated initial LIGO detectors, we find it to be $σ_ε=2.1\times10^{-7}$, which is comparable to current bounds on some nearby neutron stars. (The current best $95\%$ upper limits are $ε\lesssim7\times10^{-8}.$) It is unclear if Advanced LIGO can significantly improve on this sensitivity using spatially separated detectors. For the proposed Einstein Telescope, we estimate that $σε=5.6\times10^{-10}$. Finally, we show that stochastic measurements can be combined with measurements of individual neutron stars in order to estimate the number of in-band Galactic neutron stars. In this way, measurements of stochastic gravitational waves provide a complementary tool for studying Galactic neutron stars.
Uncertainty and Analyticity
Creators: name: Kisil, Vladimir V.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mathematical Physics (math-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences
subject: 81P05, 22E27

description: We describe a connection between minimal uncertainty states and holomorphy-type conditions on the images of the respective wavelet transform. The most familiar example is the Fock-Segal-Bargmann transform generated by the Gaussian, however, this also occurs under more general assumptions.
description: AMS-LaTeX, 7 p., no figures; v2: misprints are corrected
Design and Shape Optimization of Unmanned, Semi-Rigid Airship for Rapid Descent Using Hybrid Genetic Algorithm
Creators: name: Singh, Vinay
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2019
Subjects: genetic algorithm
hill climbing
optimization
Pareto optimality
rapid descent
semi-rigid airship

description: Airships provide an eco-friendly and cost-effective means to suit sustained airborne operations. Smaller autonomous airships are highly susceptible to adverse atmospheric conditions owing to their under-actuated, underpowered and bulky size relative to other types of unmanned aerial vehicles (UAVs). To mitigate these limitations, careful considerations of the size and shape must be made at the design stage. This research presents a methodology for obtaining an optimized shape of a semi-rigid airship. Rapid descent of the LTA ship is achieved by means of a moving gondola attached to a rigid keel mounted under the helium envelope from the bow to the mid-section of the hull. The study entails the application of a robust hybrid genetic algorithm (HGA) for the multi-disciplinary design and optimization of an airship capable of rapid descent, with lower drag and optimum surface area. A comprehensive sensitivity analysis was also performed on the basis of algorithmic parameters and atmospheric conditions. With the help of HGA, a semi-rigid airship capable of carrying a payload of 0.25 kg to 1.0 kg and capable of pitching at right angles is conceptually designed. The algorithm is also tested on commercially available vehicles to validate the results. In multi-objective optimization problems (MOOPs), the significance of different objectives is dependent on the user.
Coupling graphene mechanical resonators to superconducting microwave cavities
Creators: name: Weber, P.
name: Güttinger, J.
name: Tsioutsios, I.
name: Chang, D. E.
name: Bachtold, A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Graphene is an attractive material for nanomechanical devices because it allows for exceptional properties, such as high frequencies and quality factors, and low mass. An outstanding challenge, however, has been to obtain large coupling between the motion and external systems for efficient readout and manipulation. Here, we report on a novel approach, in which we capacitively couple a high-Q graphene mechanical resonator ($Q \sim 10^5$) to a superconducting microwave cavity. The initial devices exhibit a large single-photon coupling of $\sim 10$ Hz. Remarkably, we can electrostatically change the graphene equilibrium position and thereby tune the single photon coupling, the mechanical resonance frequency and the sign and magnitude of the observed Duffing nonlinearity. The strong tunability opens up new possibilities, such as the tuning of the optomechanical coupling strength on a time scale faster than the inverse of the cavity linewidth. With realistic improvements, it should be possible to enter the regime of quantum optomechanics.
description: 19 pages, 5 figures. Nano Lett. (2014)
Cloud angular momentum and effective viscosity in global SPH simulations with feedback
Creators: name: Williamson, David J.
name: Thacker, Robert J.
name: Wurster, James
name: Gibson, Brad K.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We examine simulations of isolated galaxies to analyse the effects of localised feedback on the formation and evolution of molecular clouds. Feedback contributes to turbulence and the destruction of clouds, leading to a population of clouds that is younger, less massive, and with more retrograde rotation. We investigate the evolution of clouds as they interact with each other and the diffuse ISM, and determine that the role of cloud interactions differs strongly with the presence of feedback: in models without feedback, scattering events dramatically increase the retrograde fraction, but in models with feedback, mergers between clouds may slightly increase the prograde fraction. We also produce an estimate of the viscous time-scale due to cloud-cloud collisions, which increases with increasing strength of feedback (~20 Gyr vs ~10 Gyr), but is still much smaller than previous estimates (~1000 Gyr); although collisions become more frequent with feedback, less energy is lost in each collision than in the models without feedback.
description: Accepted by MNRAS
A Multi-Stage Automated Online Network Data Stream Analytics Framework for IIoT Systems
Creators: name: Yang, Li
name: Shami, Abdallah
Publisher: name: arXiv
Year: 2022
Subjects: subject: Machine Learning (cs.LG)
subject: Cryptography and Security (cs.CR)
subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences
subject: I.2.1; I.2.6; C.2.0
subject: 68T01, 60L10, 68W27

description: Industry 5.0 aims at maximizing the collaboration between humans and machines. Machines are capable of automating repetitive jobs, while humans handle creative tasks. As a critical component of Industrial Internet of Things (IIoT) systems for service delivery, network data stream analytics often encounter concept drift issues due to dynamic IIoT environments, causing performance degradation and automation difficulties. In this paper, we propose a novel Multi-Stage Automated Network Analytics (MSANA) framework for concept drift adaptation in IIoT systems, consisting of dynamic data pre-processing, the proposed Drift-based Dynamic Feature Selection (DD-FS) method, dynamic model learning & selection, and the proposed Window-based Performance Weighted Probability Averaging Ensemble (W-PWPAE) model. It is a complete automated data stream analytics framework that enables automatic, effective, and efficient data analytics for IIoT systems in Industry 5.0. Experimental results on two public IoT datasets demonstrate that the proposed framework outperforms state-of-the-art methods for IIoT data stream analytics.
description: Published in IEEE Transactions on Industrial Informatics (Q1, IF: 11.648); Code is available at Github link: https://github.com/Western-OC2-Lab/MSANA-Online-Data-Stream-Analytics-And-Concept-Drift-Adaptation
Detection and Identification of Molecular Water Pollutants by Laser Raman Spectroscopy
Creators: name: Bradley, Eugene B.
name: Frenzel, Charles A.
name: Reeves, John
name: McConnell, Robert
name: Lane, Kay
Publisher: name: Kentucky Water Resources Research Institute, University of Kentucky
Year: 1971

description: Abstract:
Laser Raman spectroscopy is evolving into a primary tool for the Identification of molecular water pollutants. This study pushes the limits of detectivity of carbon disulfide and benzene to ~ 20 ppm in water solutions using a high-resolution Raman spectrometer, cooled detectors, and photon counting techniques. The primary limiting factors were found to be the low throughput and the scattered light performance of the monochromator as well as insufficient laser energy.
An optomized design for a pollution-measuring instrument is suggested, and a prototype has been built which is useful with any value of excitation energy short of sample degrading. The present instrument scans spectrum windows with fixed preselecting filters followed by a small single monochromator with high throughput. No detector cooling or refinements in signal processing were attempted. The resulting detectivity with 20 mw of laser power was only 1000 ppm. However, the scattered light background or "optical noise" is unmeasurable except at the laser frequency, where it was a maximum of six percent of full scale measured against the 992 cm-1 Raman band of benzene. Equipped with an ion laser a practical field instrument capable of detectivity of 1 ppm will cost about $20,000. The instrument described herein can be built for $4,000, less laser.
Funding information: The work on which this report is based was supported in part by funds provided by the Office of Water Resources Research, United states Department of the Interior, as authorized under the Water Resources Research Act of 1964.
Tunneling-current-induced local excitonic luminescence in p-doped WSe$_2$ monolayers
Creators: name: Román, Ricardo Javier Peña
name: Auad, Yves
name: Grasso, Lucas
name: Alvarez, Fernando
name: Barcelos, Ingrid David
name: Zagonel, Luiz Fernando
Publisher: name: arXiv
Year: 2022
Subjects: subject: Optics (physics.optics)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We have studied the excitonic properties of exfoliated tungsten diselenide (WSe$_2$) monolayers transferred to gold substrates using the tunneling current in a Scanning Tunneling Microscope (STM) operated in air to excite the light emission locally. In obtained spectra, emission energies are independent of the applied bias voltage and resemble photoluminescence (PL) results, indicating that, in both cases, the light emission is due to neutral and charged exciton recombination. Interestingly, the electron injection rate, that is, the tunneling current, can be used to control the ratio of charged to neutral exciton emission. The obtained quantum yield in the transition metal dichalcogenide (TMD) is $~5x10^{-7}$ photons per electron. The proposed excitation mechanism is the direct injection of carriers into the conduction band. The monolayer WSe$_2$ presents bright and dark defects spotted by STM images performed under UHV. STS confirms the sample as p-doped, possibly as a net result of the observed defects. The presence of an interfacial water layer decouples the monolayer from the gold support and allows excitonic emission from the WSe$_2$ monolayer. The creation of a water layer is an inherent feature of the sample transferring process due to the ubiquitous air moisture. Consequently, vacuum thermal annealing, which removes the water layer, quenches excitonic luminescence from the TMD. The tunneling current can locally displace water molecules leading to excitonic emission quenching and to plasmonic emission due to the gold substrate. The present findings extend the use and the understanding of STM induced light emission (STM-LE) on semiconducting TMDs to probe exciton emission and dynamics with high spatial resolution.
description: Includes main text and supplementary material, 22 pages
AGN-driven outflows without immediate quenching in simulations of high-redshift disk galaxies
Creators: name: Gabor, Jared M.
name: Bournaud, Frédéric
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We study outflows driven by Active Galactic Nuclei (AGNs) using high- resolution simulations of idealized z=2 isolated disk galaxies. Episodic accretion events lead to outflows with velocities >1000 km/s and mass outflow rates up to the star formation rate (several tens of Msun/yr). Outflowing winds escape perpendicular to the disk with wide opening angles, and are typically asymmetric (i.e. unipolar) because dense gas above or below the AGN in the resolved disk inhibits outflow. Owing to rapid variability in the accretion rates, outflowing gas may be detectable even when the AGN is effectively "off." The highest velocity outflows are sometimes, but not always, concentrated within 2-3 kpc of the galactic center during the peak accretion. With our purely thermal AGN feedback model -- standard in previous literature -- the outflowing material is mostly hot (10^6 K) and diffuse (nH<10^(-2) cm-3), but includes a cold component entrained in the hot wind. Despite the powerful bursts and high outflow rates, AGN feedback has little effect on the dense gas in the galaxy disk. Thus AGN-driven outflows in our simulations do not cause rapid quenching of star-formation, although they may remove significant amounts of gas of long (>Gyr) timescales.
description: 14 pages, 8 figures. MNRAS accepted. Youtube movie of outflows: http://youtu.be/g5UIVf2dEG4
DISTINCT ROLES OF THE aD HELIX IN aCAMKII ACTIVATION CHARACTERIZED USING A DE NOVO MUTATION FROM CHILDREN WITH LEARNING DISABILITIES
Creators: name: Saide, Walter
Publisher: name: Purdue University Graduate School
Year: 2023
Subjects: classificationCode: 321401
subject: Basic pharmacology
classificationCode: 310106
subject: Enzymes
classificationCode: 310112
subject: Structural biology (incl. macromolecular modelling)
classificationCode: 310104
subject: Cell neurochemistry
classificationCode: 340403
subject: Characterisation of biological macromolecules
classificationCode: 340407
subject: Proteins and peptides
classificationCode: 340401
subject: Biologically active molecules
classificationCode: 340402
subject: Biomolecular modelling and design
classificationCode: 340601
subject: Catalysis and mechanisms of reactions
classificationCode: 340607
subject: Reaction kinetics and dynamics

description: This dissertation describes the effects of a de novo mutation of CaMKII found in children with learning disabilities and describes its effect on catalytic activity. We develop a malachite green assay for the measurement of CaMKII activation and use it for high-throughput chemical screening to identify CaMKII inhibitors and enhancers. We also propose a new mechanism of regulation of CaMKII activity by ADP.
Survey participation as a function of democratic engagement, trust in institutions, and perceptions of surveys
Creators: name: Silber, Henning
name: Moy, Patricia
name: Johnson, Timothy P
name: Neumann, Rico
name: Stadtmüller, Sven
name: Repke, Lydia
Publisher: name: Technische Universität Berlin
Year: 2022
Subjects: subject: 300 Sozialwissenschaften::300 Sozialwissenschaften, Soziologie::300 Sozialwissenschaften
subject: survey attitudes
subject: survey climate
subject: survey response

description: Objective: With response rates of large‐scale surveys having decreased significantly over the years and rebounds seeming unlikely, many studies now examine how response rates vary with methodological design and incentives. This investigation delves into how individual‐level factors shape survey participation. Specifically, we examine the influence of individuals’ democratic engagement and their trust in institutions on intent to participate in surveys, both directly and indirectly through their perceptions of surveys. Methods: We collected survey data from a probability sample of adults (N = 1343) in Mannheim, Germany, from November 2019 to March 2020. Structural equation models were estimated to test the hypothesized relationships. Results: The analyses support most, but not all, hypothesized relationships. Democratic engagement bolstered intent to participate, directly as well as indirectly through perceptions of surveys. Institutional trust, on the other hand, only influenced the outcome measure indirectly. Perceptions of surveys had a strong bearing overall effect on intent to participate. Conclusion: The study's results suggest that the response rates and larger issues related to the perceived legitimacy of public opinion and survey research might be intertwined with orientations related to people's civic and political life. The article discusses potential ways survey researchers can counteract distrust in surveys.
Sequence similarity network of eukaryotic GCN5-related acetyltransferases
Creators: name: Krtenic, Bojan
name: Drazic, Adrian
name: Arnesen, Thomas
name: Reuter, Nathalie
Publisher: name: Zenodo
Year: 2020
Subjects: sequence similarity network

description: Sequence similarity network (SSN) for the eucaryotic part of the GCN5-related acetyltransferase superfamily. The SSN is in xgmml format.
Generalized friendship paradox in networks with tunable degree-attribute correlation
Creators: name: Jo, Hang-Hyun
name: Eom, Young-Ho
Publisher: name: arXiv
Year: 2014
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Social and Information Networks (cs.SI)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: One of interesting phenomena due to topological heterogeneities in complex networks is the friendship paradox: Your friends have on average more friends than you do. Recently, this paradox has been generalized for arbitrary node attributes, called generalized friendship paradox (GFP). The origin of GFP at the network level has been shown to be rooted in positive correlations between degrees and attributes. However, how the GFP holds for individual nodes needs to be understood in more detail. For this, we first analyze a solvable model to characterize the paradox holding probability of nodes for the uncorrelated case. Then we numerically study the correlated model of networks with tunable degree-degree and degree-attribute correlations. In contrast to the network level, we find at the individual level that the relevance of degree-attribute correlation to the paradox holding probability may depend on whether the network is assortative or dissortative. These findings help us to understand the interplay between topological structure and node attributes in complex networks.
description: 7 pages, 5 figures
Possible realization of three-dimensional quantum spin liquid behavior in HoVO4
Creators: name: Ranaut, Dheeraj
name: Shastri, Shivprasad S.
name: Pandey, Sudhir K.
name: Mukherjee, K.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The study of geometrically frustrated magnetic systems with unusual crystal field ground states offers a possibility of realizing the new aspects of physics of disordered systems. In this study, we report our results of structural, magnetic susceptibility, heat capacity measurements, along with density functional theory calculations on HoVO4; a compound in which the presence of a distorted kind of HoO8 polyhedral leads to multiple magnetic interaction paths. The observed broad maximum below 10 K in the temperature response of DC susceptibility curves implies the presence of short-range correlations. AC susceptibility rules out the possibility of any kind of spin freezing. Temperature dependent heat capacity measurement at zero field indicate towards the absence of long-range ordering, along with the presence of a broad maximum centered around 14 K. The residual heat capacity exhibits a characteristic power-law (Tα) behavior with the exponent α nearly equal to 2, which is analogous to that observed for other 3D quantum spin liquid systems. The density functional theory calculations signify the presence of dominant second and third nearest neighbor interactions, which in turn lead to magnetic frustration in our system. Our investigations suggest that HoVO4 can be a candidate for realizing a 3D quantum spin liquid state.
description: Accepted in J. Phys. Condens. Matter
Multi-Camera Collaborative Depth Prediction via Consistent Structure Estimation
Creators: name: Xu, Jialei
name: Liu, Xianming
name: Bai, Yuanchao
name: Jiang, Junjun
name: Wang, Kaixuan
name: Chen, Xiaozhi
name: Ji, Xiangyang
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Depth map estimation from images is an important task in robotic systems. Existing methods can be categorized into two groups including multi-view stereo and monocular depth estimation. The former requires cameras to have large overlapping areas and sufficient baseline between cameras, while the latter that processes each image independently can hardly guarantee the structure consistency between cameras. In this paper, we propose a novel multi-camera collaborative depth prediction method that does not require large overlapping areas while maintaining structure consistency between cameras. Specifically, we formulate the depth estimation as a weighted combination of depth basis, in which the weights are updated iteratively by a refinement network driven by the proposed consistency loss. During the iterative update, the results of depth estimation are compared across cameras and the information of overlapping areas is propagated to the whole depth maps with the help of basis formulation. Experimental results on DDAD and NuScenes datasets demonstrate the superior performance of our method.
Kato smoothing and Strichartz estimates for wave equations with magnetic potentials
Creators: name: D'Ancona, Piero
Publisher: name: arXiv
Year: 2014
Subjects: subject: Analysis of PDEs (math.AP)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: Let $H$ be a selfadjoint operator and $A$ a closed operator on a Hilbert space $\mathcal{H}$. If $A$ is $H$-(super)smooth in the sense of Kato-Yajima, we prove that $AH^{-\frac14}$ is $\sqrt{H}$-(super)smooth. This allows to include wave and Klein-Gordon equations in the abstract theory at the same level of generality as Schrödinger equations. We give a few applications and in particular, based on the resolvent estimates of Erdogan, Goldberg and Schlag \cite{ErdoganGoldbergSchlag09-a}, we prove Strichartz estimates for wave equations perturbed with large magnetic potentials on $\mathbb{R}^{n}$, $n\ge3$.
A novel $\sqrt{19}\times\sqrt{19}$ superstructure in epitaxially grown 1T-TaTe$_2$
Creators: name: Hwang, Jinwoong
name: Jin, Yeongrok
name: Zhang, Canxun
name: Zhu, Tiancong
name: Kim, Kyoo
name: Zhong, Yong
name: Lee, Ji-Eun
name: Shen, Zongqi
name: Chen, Yi
name: Ruan, Wei
name: Ryu, Hyejin
name: Hwang, Choongyu
name: Lee, Jaekwang
name: Crommie, Michael F.
name: Mo, Sung-Kwan
name: Shen, Zhi-Xun
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The spontaneous formation of electronic orders is a crucial element for understanding complex quantum states and engineering heterostructures in two-dimensional materials. We report a novel $\sqrt{19}\times\sqrt{19}$ charge order in few-layer thick 1T-TaTe$_2$ transition metal dichalcogenide films grown by molecular beam epitaxy, which has not been realized. Our photoemission and scanning probe measurements demonstrate that monolayer 1T-TaTe$_2$ exhibits a variety of metastable charge density wave orders, including the $\sqrt{19}\times\sqrt{19}$ superstructure, which can be selectively stabilized by controlling the post-growth annealing temperature. Moreover, we find that only the $\sqrt{19}\times\sqrt{19}$ order persists in 1T-TaTe$_2$ films thicker than a monolayer, up to 8 layers. Our findings identify the previously unrealized novel electronic order in a much-studied transition metal dichalcogenide and provide a viable route to control it within the epitaxial growth process.
Visualisation of oral dosage forms in the fasted and fed state healthy human stomach using MRI: a Scoping Review
Creators: name: Tejal Akbar
Publisher: name: Open Science Framework
Year: 2023
Subjects: subject: Physical Sciences and Mathematics
subject: Medicine and Health Sciences

description: The objective of this scoping review is to understand how Magnetic Resonance Imaging (MRI) has been used to visualise oral dosage forms, both in the fasted and fed state, in the healthy human stomach
PRISMA-P-checklist. Determinants of in-hospital death in patients with a thrombus straddling a patent foramen ovale: protocol of a systematic review.
Creators: name: Palak Shah
name: Jiménez-Ruiz, Amado
name: Gibson, Andrew
name: Gonzalez, Juan Camilo Vargas
name: Sposato, Luciano A.
Publisher: name: figshare
Year: 2020
Subjects: subject: 110201 Cardiology (incl. Cardiovascular Diseases)
subject: FOS: Clinical medicine
subject: 110904 Neurology and Neuromuscular Diseases

description: Determinants of in-hospital death in patients with a thrombus straddling a patent foramen ovale: protocol of a systematic review
title: Biostatistics, Epidemiology & Research Design (BERD)
Creators: name: Ash, Arlene S.
name: Barton, Bruce A.
name: Kiefe, Catarina I.
Publisher: name: eScholarship@UMMS
Year: 2011

description: This seminar describes the Biostatistics, Epidemiology, and Research Design component of the UMCCTS, including the Quantitative Methods Core (QMC). An overview of the new Department of Quantitative Health Sciences is also presented.
Exploring Effective Knowledge Transfer for Few-shot Object Detection
Creators: name: Zhao, Zhiyuan
name: Liu, Qingjie
name: Wang, Yunhong
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences
subject: I.4.9

description: Recently, few-shot object detection~(FSOD) has received much attention from the community, and many methods are proposed to address this problem from a knowledge transfer perspective. Though promising results have been achieved, these methods fail to achieve shot-stable:~methods that excel in low-shot regimes are likely to struggle in high-shot regimes, and vice versa. We believe this is because the primary challenge of FSOD changes when the number of shots varies. In the low-shot regime, the primary challenge is the lack of inner-class variation. In the high-shot regime, as the variance approaches the real one, the main hindrance to the performance comes from misalignment between learned and true distributions. However, these two distinct issues remain unsolved in most existing FSOD methods. In this paper, we propose to overcome these challenges by exploiting rich knowledge the model has learned and effectively transferring them to the novel classes. For the low-shot regime, we propose a distribution calibration method to deal with the lack of inner-class variation problem. Meanwhile, a shift compensation method is proposed to compensate for possible distribution shift during fine-tuning. For the high-shot regime, we propose to use the knowledge learned from ImageNet as guidance for the feature learning in the fine-tuning stage, which will implicitly align the distributions of the novel classes. Although targeted toward different regimes, these two strategies can work together to further improve the FSOD performance. Experiments on both the VOC and COCO benchmarks show that our proposed method can significantly outperform the baseline method and produce competitive results in both low-shot settings (shot<5) and high-shot settings (shot>=5). Code is available at https://github.com/JulioZhao97/EffTrans_Fsdet.git.
description: 9 pages, 6 figures, accepted by ACM Multimedia 2022
Eriophyidae
Creators: name: Flechtmann, Carlos H. W.
name: Etienne, Jean
Publisher: name: Zenodo
Year: 2003
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Prostigmata
Eriophyidae

description: ERIOPHYIDAE  In the descriptions of the new species all measurements are given in micrometers and, unless otherwise specified, refer to the length of the structure. For females, each measurement of the holotype precedes the corresponding range for the paratypes. The count of ventral opisthosomal annuli starts from the first annulus bordering the genitalia posteriorly. Length of legs is measured from trochanteral basis to the tip of tarsus, not including tarsal appendages (solenidion and empodium).
description: Published as part of Flechtmann, Carlos H. W. & Etienne, Jean, 2003, Two new species of eriophyid mites (Acari: Eriophyidae) from Guadeloupe and Marie Galante, with records on other plant mites, pp. 1-7 in Zootaxa 271 on page 2, DOI: 10.5281/zenodo.157125
title: Pilot Project Funding Opportunities
Creators: name: Schneider, Gary B.
name: Hardy, Olga T.
name: Song, Jie
Publisher: name: eScholarship@UMMS
Year: 2011

description: Learn about funding opportunities offered through the UMCCTS in the 2011-2012 academic year. Two previously-funded researchers also describe their projects: Olga Hardy on "Capacity Building at GoKids Boston: An Inter-­Campus Initiative" and Jie Song on "New Therapeutic Strategy for the Treatment of Hard-to-heal Bony Lesions."
Production of Light Nuclei in Heavy Ion Collisions Within Multiple Freezeout Scenario
Creators: name: Chatterjee, Sandeep
name: Mohanty, Bedangadas
Publisher: name: arXiv
Year: 2014
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We discuss the production of light nuclei in heavy ion collisions within a multiple freezeout scenario. Thermal parameters extracted from the fits to the observed hadron yields are used to predict the multiplicities of light nuclei. Ratios of strange to non strange nuclei are found to be most sensitive to the details of the chemical freezeout. The well known disagreement between data of $^3_Λ\text{H/}^3\text{He}$ and $\overline{^3_Λ\text{H/}^3\text{He}}$ at $\sqrt{s_{NN}}=200$ GeV and models based on thermal as well as simple coalescence using a single chemical freezeout surface goes away when we let the strange and non strange hadrons freezeout at separate surfaces. At the LHC energy of $\sqrt{s_{NN}}=2700$ GeV, multiple freezeout scenario within a thermal model provides a consistent framework to describe the yields of all measured hadrons and nuclei.
Elliptic flow of thermal dileptons in event-by-event hydrodynamic simulation
Creators: name: Xu, Hao-jie
name: Pang, Longgang
name: Wang, Qun
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The elliptic flows of thermal di-electrons are investigated within a (2+1)-dimension event-by-event hydrodynamic model for Au+Au collisions at $\sqrt{s_{NN}}=200$ GeV. The fluctuating initial conditions are given by the Monte Carlo Glauber model. We find in our event-by-event calculation rather weak correlation between the dilepton emission angles and the event plane angles of charged hadrons. We observe strong fluctuation effects in dilepton elliptic flows when using the event plane angles of dileptons at specific invariant mass $M$. The correlation between the dilepton event plane angle and charged hadron one becomes stronger with decreasing $M$. This provides a possible measure of the interplay between the effect of geometric deformation and that of fluctuating "hot spots" in relativistic heavy ion collisions.
description: Revtex 4, 6 pages, 5 figures, figures updated, typos corrected, accepted to Phys.Rev.C
Kitaev interactions between j=1/2 moments in honeycomb Na2IrO3 are large and ferromagnetic: insights from ab initio quantum chemistry calculations
Creators: name: Katukuri, Vamshi M.
name: Nishimoto, S.
name: Yushankhai, V.
name: Stoyanova, A.
name: Kandpal, H.
name: Choi, Sungkyun
name: Coldea, R.
name: Rousochatzakis, I.
name: Hozoi, L.
name: Brink, Jeroen van den
Publisher: name: arXiv
Year: 2013
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Na$_2$IrO$_3$, a honeycomb 5$d^5$ oxide, has been recently identified as a potential realization of the Kitaev spin lattice. The basic feature of this spin model is that for each of the three metal-metal links emerging out of a metal site, the Kitaev interaction connects only spin components perpendicular to the plaquette defined by the magnetic ions and two bridging ligands. The fact that reciprocally orthogonal spin components are coupled along the three different links leads to strong frustration effects and nontrivial physics. While the experiments indicate zigzag antiferromagnetic order in Na$_2$IrO$_3$, the signs and relative strengths of the Kitaev and Heisenberg interactions are still under debate. Herein we report results of ab initio many-body electronic structure calculations and establish that the nearest-neighbor exchange is strongly anisotropic with a dominant ferromagnetic Kitaev part, whereas the Heisenberg contribution is significantly weaker and antiferromagnetic. The calculations further reveal a strong sensitivity to tiny structural details such as the bond angles. In addition to the large spin-orbit interactions, this strong dependence on distortions of the Ir$_2$O$_2$ plaquettes singles out the honeycomb 5$d^5$ oxides as a new playground for the realization of unconventional magnetic ground states and excitations in extended systems.
description: 13 pages, 2 tables, 3 figures, accepted in NJP
Phase diagram of the 1/3-filled extended Hubbard model on the Kagome lattice
Creators: name: Ferhat, Karim
name: Ralko, Arnaud
Publisher: name: arXiv
Year: 2014
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study the phase diagram of the extended Hubbard model on the kagome lattice at 1/3 filling. By combining a configuration interaction approach to an unrestricted Hartree-Fock, we construct an effective hamiltonian which takes the correlations back on top of the mean-field solution. We obtain a rich phase diagram with, in particular, the presence of two original phases. The first one consists of polarized droplets of metal standing on the hexagons of the lattice, and an enlarged kagome charge order, inversely polarized, on the remaining sites. The second, obeying a local ice-rule type constraint on the triangles of the kagome lattice, is driven by an antiferromagnetically coupling of spins and is constituted of disconnected 6-spin singlet rings. The nature and stability of these phases at large interactions is studied via variational wave functions and perturbation theory.
description: 6 pages, 5 figures
Chiral selection and frequency response of spiral waves in reaction-diffusion systems under a chiral electric field
Creators: name: Li, Bing-Wei
name: Cai, Mei-Chun
name: Zhang, Hong
name: Panfilov, Alexander V.
name: Dierckx, Hans
Publisher: name: arXiv
Year: 2014
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: Chirality is one of the most fundamental properties of many physical, chemical and biological systems. However, the mechanisms underlying the onset and control of chiral symmetry are largely understudied. We investigate possibility of chirality control in a chemical excitable system (the BZ reaction) by application of a chiral (rotating) electric field using the Oregonator model. We find that unlike previous findings, we can achieve the chirality control not only in the field rotation direction, but also opposite to it, depending on the field rotation frequency. To unravel the mechanism, we further develop a comprehensive theory of frequency synchronization based on the response function approach. We find that this problem can be described by the Adler equation and show phase-locking phenomena, known as the Arnold tongue. Our theoretical predictions are in good quantitative agreement with the numerical simulations and provide a solid basis for chirality control in excitable media.
description: 21 pages with 9 figures; update references; to appear in J. Chem. Phys
title: Small Business Innovation Research (SBIR/STTR) Program: Government-funded R&D for fun and profit
Creators: name: Rudolph, Natalie S.
Publisher: name: eScholarship@UMMS
Year: 2012

description: The UMass Center for Clinical and Translational Science, in collaboration with the Massachusetts Medical Device Development Center (M2D2), sponsored a luncheon seminar focused on the essentials of SBIR/STTR grant applications.
Investigation of wetting layers in InAs/GaAs self-assembled nanostructures with reflectance difference spectroscopy
Creators: name: Zhang, H. Y.
name: Chen, Y. H.
name: Wang, Z. G.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: As a system with both profound physics and promising application potentials, the strain-induced self-assembled semiconductor nanostructures have been investigated for decades of years. The optical and electrical properties of this system are mainly determined by the nanostructures, but can be greatly affected by the generally existent two dimensional structures from which the nanostructures evolve, the so called wetting layer (WL). The WL configurations can be varied with different growth conditions, and further influence the nanostructure morphology and properties. This is a reviewing article introducing some recent progresses in investigating the evolution of WLs in InAs/GaAs system with reflectance difference spectroscopy. Different kinds of WL evolution processes in Stranski-Krastanov growth mode are introduced. The segregation and desorption of indium atoms and the effect of growth interruption are mentioned. The existence and the evolution process of wetting layers in droplet epitaxy method are also discussed.