cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
PrivFramework: A System for Configurable and Automated Privacy Policy Compliance
Creators: name: Khan, Usmann
name: Wang, Lun
name: Subramanian, Jithendaraa
name: Near, Joseph P.
name: Song, Dawn
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: Today's massive scale of data collection coupled with recent surges of consumer data leaks has led to increased attention towards data privacy and related risks. Conventional data privacy protection systems focus on reducing custodial risk and lack features empowering data owners. As an end user there are limited options available to specify and enforce one's own privacy preferences over their data. To address these concerns we present PrivFramework, a user-configurable frame-work for automated privacy policy compliance. PrivFramework allows data owners to write powerful privacy policies to protect their data and automatically enforces these policies against analysis programs written in Python. Using static-analysis PrivFramework automatically checks authorized analysis programs for compliance to user-defined policies.
Galaxy formation with L-GALAXIES: Modelling the environmental dependency of galaxy evolution and comparing with observations
Creators: name: Ayromlou, Mohammadreza
name: Kauffmann, Guinevere
name: Yates, Robert M.
name: Nelson, Dylan
name: White, Simon D. M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present a variation of the recently updated Munich semi-analytical galaxy formation model, L-Galaxies, with a new gas stripping method. Extending earlier work, we directly measure the local environmental properties of galaxies to formulate a more accurate treatment of ram-pressure stripping for all galaxies. We fully re-calibrate the modified L-Galaxies model using a Markov Chain Monte Carlo (MCMC) method with the stellar mass function and quenched fraction of galaxies at $0\leq z\leq2$ as constraints. Due to this re-calibration, global galaxy population relations, including the stellar mass function, quenched fractions versus galaxy mass and HI mass function are all largely unchanged and remain consistent with observations. By comparing to data on galaxy properties in different environments from the SDSS and HSC surveys, we demonstrate that our modified model improves the agreement with the quenched fractions and star formation rates of galaxies as a function of environment, stellar mass, and redshift. Overall, in the vicinity of haloes with total mass $10^{12}$ to $10^{15}\rm M_{\odot}$ at $z=0$, our new model produces higher quenched fractions and stronger environmental dependencies, better recovering observed trends with halocentric distance up to several virial radii. By analysing the actual amount of gas stripped from galaxies in our model, we show that those in the vicinity of massive haloes lose a large fraction of their hot halo gas before they become satellites. We demonstrate that this affects galaxy quenching both within and beyond the halo boundary. This is likely to influence the correlations between galaxies up to tens of megaparsecs.
description: Submitted to MNRAS. The full model output and model description are publicly available at https://lgalaxiespublicrelease.github.io
Adversarial Learning for Zero-shot Domain Adaptation
Creators: name: Wang, Jinghua
name: Jiang, Jianmin
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Zero-shot domain adaptation (ZSDA) is a category of domain adaptation problems where neither data sample nor label is available for parameter learning in the target domain. With the hypothesis that the shift between a given pair of domains is shared across tasks, we propose a new method for ZSDA by transferring domain shift from an irrelevant task (IrT) to the task of interest (ToI). Specifically, we first identify an IrT, where dual-domain samples are available, and capture the domain shift with a coupled generative adversarial networks (CoGAN) in this task. Then, we train a CoGAN for the ToI and restrict it to carry the same domain shift as the CoGAN for IrT does. In addition, we introduce a pair of co-training classifiers to regularize the training procedure of CoGAN in the ToI. The proposed method not only derives machine learning models for the non-available target-domain data, but also synthesizes the data themselves. We evaluate the proposed method on benchmark datasets and achieve the state-of-the-art performances.
Multiatom and resonant interaction scheme for quantum state transfer and logical gates between two remote cavities via an optical fiber
Creators: name: Yin, Zhang-qi
name: Li, Fu-li
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A system consisting of two single-mode cavities spatially separated and connected by an optical fiber and multiple two-level atoms trapped in the cavities is considered. If the atoms resonantly and collectively interact with the local cavity fields but there is no direct interaction between the atoms, we show that an ideal quantum state transfer and highly reliable quantum swap, entangling, and controlled-Z gates can be deterministically realized between the distant cavities. We find that the operation of state transfer and swap, entangling, and controlled-Z gates can be greatly speeded up as number of the atoms in the cavities increases. We also notice that the effects of spontaneous emission of atoms and photon leakage out of cavity on the quantum processes can also be greatly diminished in the multiatom case.
description: 24 pages, 8 figures; Corrected typos in fig6(b),(c) and references; Adding disscussion on experimental feasibility in the last section. Accepted for PRA
Method and theory in comparative grammar: Measurement uniformity vs. building block uniformity
Creators: name: Haspelmath, Martin
Publisher: name: Zenodo
Year: 2021

description: In this presentation, I contrast two approaches to worldwide grammatical comparisons: One is based on “measurement uniformity” and a clear separation between an autonomous comparative method and explanatory theories, while the second is based on the idea that languages are made from the same building blocks, so that the explanatory theory (i.e. the hypothesized uniform building blocks) is not autonomous from the method for comparison. The “measurement” metaphor is not widely used in comparative grammar research yet, but I use it to emphasize the value of distinguishing strictly between method and theory. I illustrate this conceptual distinction with generalizations from my recent work on differential argument coding and other kinds of differential coding (Haspelmath 2021a; 2021b), which require uniform comparative concepts (uniform measurement), but which are based on an explanatory theory (the efficiency theory of asymmetric coding) that makes no reference to innate building blocks. I also note that the distinction between measurement and building block uniformity is more basic than the distinction between “functionalism and formalism” (e.g. Bošković 2021). References Bošković, Željko. 2021. Formalism and, not vs, functionalism. LingBuzz. (https://ling.auf.net/lingbuzz/006337) Haspelmath, Martin. 2021a. Role-reference associations and the explanation of argument coding splits. Linguistics 59(1). 123–174. (doi:10.1515/ling-2020-0252) Haspelmath, Martin. 2021b. Explaining grammatical coding asymmetries: Form-frequency correspondences and predictability. Journal of Linguistics 57(3). 605-633 (doi:10.1017/S0022226720000535) (https://ling.auf.net/lingbuzz/004531)
Elicitation - manmade objects and plants
Creators: name: Piño Ríos, Zoila
name: Clem, Emily
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2024
Subjects: subject: amc

description: This bundle contains recordings and associated notes from an elicitation session conducted by Emily Clem with Zoila Piño Ríos. Topics covered include vocabulary and utterances related to manmade objects and plants.
Comparison of large-scale flows on the Sun measured by time-distance helioseismology and local correlation tracking technique
Creators: name: Svanda, Michal
name: Zhao, Junwei
name: Kosovichev, Alexander G.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a direct comparison between two different techniques time-distance helioseismology and a local correlation tracking method for measuring mass flows in the solar photosphere and in a near-surface layer: We applied both methods to the same dataset (MDI high-cadence Dopplergrams covering almost the entire Carrington rotation 1974) and compared the results. We found that after necessary corrections, the vector flow fields obtained by these techniques are very similar. The median difference between directions of corresponding vectors is 24 degrees, and the correlation coefficients of the results for mean zonal and meridional flows are 0.98 and 0.88 respectively. The largest discrepancies are found in areas of small velocities where the inaccuracies of the computed vectors play a significant role. The good agreement of these two methods increases confidence in the reliability of large-scale synoptic maps obtained by them.
description: 14 pages, 6 figures, just before acceptance in Solar Physics
Determining the rRelationships between sSoil pProperties and pPlant dDistribution in a protected area in central Iran
Creators: name: Besalatpour, Ali A.
name: Homayoun, Mohammad
name: Jalalian, Ahmad
name: Basirat, Ali
name: Aalders, Inge
Publisher: name: Maejo University
Year: 2015
Subjects: soil-plant relationships,endangered plant species,Iran,support vector machines

description: 2, 9, Maejo International Journal of Science and Technology
On the Luminosity and Mass Loss of Galactic AGB Stars
Creators: name: Guandalini, R.
name: Busso, M.
name: Cardinali, M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: As part of a reanalysis of Galactic Asymptotic Giant Branch stars (hereafter AGB stars) at infrared wavelengths, we discuss here two samples (the first of carbon-rich stars, the second of S stars) for which photometry in the near- and mid-IR and distance estimates are available. Whenever possible we searched also for mass-loss rates. The observed spectral energy distributions extended in all cases up to 20 $μ$m and for the best-observed sources up to 45 $μ$m. The wide wavelength coverage allows us to obtain reliable bolometric corrections, and hence bolometric magnitudes. We show that mid-IR fluxes are crucial for estimating bolometric magnitudes for stars with dusty envelopes and that the so-called luminosity problem of C stars (i.e. the suggestion that they are less luminous than predicted by models) does not appear to exist.
description: 6 pages, 4 figures, Contribution from the Conference: "Why Galaxies Care About AGB Stars: Their Importance as Actors and Probes", held 7-11 August 2006 at University Campus, Vienna, Austria
Extreme antagonism arising from gene-environment interactions
Creators: name: Wytock, Thomas P.
name: Zhan, Manjing
name: Jinich, Adrian
name: Fiebig, Aretha
name: Crosson, Sean
name: Motter, Adilson E.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Biological Physics (physics.bio-ph)
subject: Genomics (q-bio.GN)
subject: Populations and Evolution (q-bio.PE)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: Antagonistic interactions in biological systems, which occur when one perturbation blunts the effect of another, are typically interpreted as evidence that the two perturbations impact the same cellular pathway or function. Yet, this interpretation ignores extreme antagonistic interactions wherein an otherwise deleterious perturbation compensates for the function lost due to a prior perturbation. Here, we report on gene-environment interactions involving genetic mutations that are deleterious in a permissive environment but beneficial in a specific environment that restricts growth. These extreme antagonistic interactions constitute gene-environment analogs of synthetic rescues previously observed for gene-gene interactions. Our approach uses two independent adaptive evolution steps to address the lack of experimental methods to systematically identify such extreme interactions. We apply the approach to Escherichia coli by successively adapting it to defined glucose media without and with the antibiotic rifampicin. The approach identified multiple mutations that are beneficial in the presence of rifampicin and deleterious in its absence. The analysis of transcription shows that the antagonistic adaptive mutations repress a stringent response-like transcriptional program, while non-antagonistic mutations have an opposite transcriptional profile. Our approach represents a step toward the systematic characterization of extreme antagonistic gene-drug interactions, which can be used to identify targets to select against antibiotic resistance.
description: 34 pages, 8 figures, 10 tables. Published in Biophysical Journal
WiMAX deployment: A report for a rural region of Thailand
Creators: name: Chalee Vorakulpipat
name: Wongthavarawat, Kitti
name: Kitiwat Limmongkol
name: Siwaruk Siwamogsatham
Publisher: name: Maejo University
Year: 2015
Subjects: Thailand,WiMAX,rural community,educational opportunities

description: 2, 9, Maejo International Journal of Science and Technology
ORC Geothermal power plants: an analysis of the structure and trends of the European market
Creators: name: Garabetian, Thomas
Publisher: name: Technical University of Munich
Year: 2021

description: Geothermal energy is among the main applications of ORC technology, and it is arguably one of the energy sources where the ORC deployment potential is least fulfilled in Europe. Moreover, as the European Union is engaging in the decarbonisation of its energy system by the middle of the century, the use of geothermal energy for power generation is set to increase rapidly. This paper, based on the findings of the European Geothermal Market Report, an annual publication by EGEC which provides a thorough analysis of the market for geothermal power generation and heating and cooling, will provide an analysis of the ORC turbine market for geothermal energy. The paper will notably explore the merits of ORC technology, justifying a rapid popularity in the geothermal sector. It will also assess the market dynamics, looking at historical data, key manufacturers, capacity installation and so on which have been analysed by EGEC over the past decade across publication of the European Geothermal Market Report. The year 2020 was especially market with COVID-19 impacts, which had a strong impact on developments in many parts of Europe. This did not however stop developments in Turkey which continued its rapid scale up geothermal power capacity with 8 plants commissioned. Beyond the impact of the year 2020 on the industry, developments across Europe have been largely hindered by the lack of a consistent and reliable regulatory framework to enable the development of new resources and support investments in new geothermal plants. The paper will also assess the potential for geothermal electricity in the coming decade, and how this would translate for the ORC sector in light of recent market trends, ongoing technology innovation in the geothermal sector and policy driven prospects.
Cascade Training Technique for Particle Identification
Creators: name: Liu, Yong
name: Stancu, Ion
Publisher: name: arXiv
Year: 2006
Subjects: subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The cascade training technique which was developed during our work on the MiniBooNE particle identification has been found to be a very efficient way to improve the selection performance, especially when very low background contamination levels are desired. The detailed description of this technique is presented here based on the MiniBooNE detector Monte Carlo simulations, using both artifical neural networks and boosted decision trees as examples.
description: 12 pages and 4 EPS figures
Flexibility services and capacity availability: towards a business model and regulatory framework for geothermal ORC plant market uptake
Creators: name: Garabetian, Thomas
Publisher: name: Technical University of Munich
Year: 2021

description: In the European Union, the objective of decarbonisation of the economy 2050 laid out by the European Green Deal leads to rapid and profound changes in the structure of the electricity market. Transitioning away from a centralised system dominated by suppliers with high operational costs, the electricity network in increasingly dominated by renewable sources which are defined by low marginal costs. Because of a sharp increase in variable generation, flexibility and dispatchability is now more valuable, though the old market structure is not fit to reward them. This new structure of the electricity market represents an opportunity for the application of ORC turbine technologies to geothermal energy, and to thermal renewable energy sources overall. New regulatory instruments and business models are therefore emerging to allow the deployment of renewable technologies that meet the new needs of the electricity market. Geothermal ORC plants, whose potential remains mostly untapped across Europe, can benefit from this evolving regulatory framework and the apparition of new business models. Capacity Remuneration Mechanisms in the 2018 European electricity market regulation can become an opportunity for geothermal power plants if they are implemented to incentivize new investments. Power Purchase Agreement, an increasingly prevalent business models for private and public entities to secure a long-term supply of renewable energy, value the stability provided by geothermal plant and can be driver in new investments. The GEOSMART project is exploring the policy, regulatory and financing framework that can allow the deployment of flexible geothermal electricity generation at scale. This paper will present the findings of the GEOSMART project, looking first at the electricity market structure in Europe and flexibility needs. The paper will also present how geothermal power plants can meet the arising needs of the electricity market, and what new models for pricing and tariffication within the markets are suited to build the business case of geothermal ORC plants in Europe. The paper will also explore how business models, notably Power Purchasing Agreement can complement the regulatory framework in accelerating the deployment of geothermal power plants as a flexibility and security of supply provider.
YZiCS: On the Mass Segregation of Galaxies in Clusters
Creators: name: Kim, Seonwoo
name: Contini, Emanuele
name: Choi, Hoseung
name: Han, San
name: Lee, Jaehyun
name: Oh, Sree
name: Kang, Xi
name: Yi, Sukyoung K.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Mass segregation, a tendency of more massive galaxies being distributed closer to the cluster center, is naturally expected from dynamical friction, but its presence is still controversial. Using deep optical observations of 14 Abell clusters (KYDISC) and a set of hydrodynamic simulations (YZiCS), we find in some cases a hint of mass segregation inside the virial radius. Segregation is visible more clearly when the massive galaxy fraction is used instead of mean stellar mass. The trend is more significant in the simulations than in the observations. To find out the mechanisms working on mass segregation, we look into the evolution of individual clusters simulated. We find that the degree of mass segregation is different for different clusters: the trend is visible only for low-mass clusters. We compare the masses of galaxies and their dark haloes at the time of infall and at the present epoch to quantify the amount of tidal stripping. We then conclude that satellites that get accreted at earlier epochs or galaxies in more massive clusters go through more tidal stripping. These effects in combination result in a correlation between the host halo mass and the degree of stellar mass segregation.
description: 10 pages, 8 figures, 2 tables. Accepted for publication in ApJ
Correlation between the gas-phase metallicity and ionization parameter in extragalactic HII regions
Creators: name: Ji, Xihan
name: Yan, Renbin
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The variations of the metallicity and ionization parameter in HII regions are usually thought to be the dominant factors that produce the variations we see in the observed emission line spectra. There is an increasing amount of evidence that these two quantities are physically correlated, although the exact form of this correlation is debatable in the literature. Simulated emission line spectra from photoionized clouds provide important clues about the physical conditions of HII regions and are frequently used for deriving metallicities and ionization parameters. Through a systematic investigation on the assumptions and methodology used in applying photoionization models, we find that the derived correlation has a strong dependence on the choice of model parameters. On the one hand, models that give consistent predictions over multiple emission-line ratios yield a positive correlation between the metallicity and ionization parameter for the general population of HII regions. On the other hand, models that are inconsistent with the data locus in the line-ratio space yield discrepant correlations when different subsets of line ratios are used in the derivation. The correlation between the metallicity and ionization parameter has a secondary dependence on the SFR surface density, with the higher SFR regions showing higher ionization parameter but weaker correlations. The existence of the positive correlation contradicts the wind-driven bubble model for HII regions. We explore assumptions in the models and conclude that there is a potential bias associated with the geometry. However, this is still insufficient to explain the correlation. Mechanisms that suppress the dynamical influence of stellar winds in realistic HII regions might be the key to solving this puzzle, though more sophisticated combinations of dynamical models and photoionization models to test are required.
description: 21 pages, 15 figures, accepted for publication in A&A
First detection of stacked X-ray emission from cosmic web filaments
Creators: name: Tanimura, H.
name: Aghanim, N.
name: Kolodzig, A.
name: Douspis, M.
name: Malavasi, N.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We report the first statistical detection of X-ray emission from cosmic web filaments in ROSAT data. We selected 15,165 filaments at 0.2
description: 7 pages, 8 figures, published by A&A as Letters
Role of Fabrication Errors and Refractive Index on Multilevel Diffractive Lens Performance
Creators: name: Banerji, Sourangsu
name: Cooke, Jacqueline
name: Sensale-Rodriguez, Berardi
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Multilevel diffractive lenses (MDLs) have emerged as an alternative to both conventional diffractive optical elements (DOEs) and metalenses for applications ranging from imaging to holographic and immersive displays. Recent work has shown that by harnessing structural parametric optimization of DOEs, one can design MDLs to enable multiple functionalities like achromaticity, depth of focus, wide-angle imaging, etc. with great ease in fabrication. Therefore, it becomes critical to understand how fabrication errors still do affect the performance of MDLs and numerically evaluate the trade-off between efficiency and initial parameter selection, right at the onset of designing an MDL, i.e., even before putting it into fabrication. Here, we perform a statistical simulation-based study on MDLs (primarily operating in the THz regime) to analyze the impact of various fabrication imperfections (single and multiple) on the final structure as a function of the number of ring height levels. Furthermore, we also evaluate the performance of these same MDLs with the change in the refractive index of the constitutive material. We use focusing efficiency as the evaluation criterion in our numerical analysis; since it is the most fundamental property that can be used to compare and assess the performance of lenses (and MDLs) in general designed for any application with any specific functionality.
description: Initial manuscript version of the published article. Some comments were removed in the final published version at the discretion of the reviewers and not of the authors. However the authors would still like to include the discussion for the benefit of the optics community
Assessment of an Inverse Organic Rankine cycle system for the ECS of a large rotorcraft adopting a high-speed centrifugal compressor and a low GWP refrigerant
Creators: name: Ascione, Federica
name: De Servi, Carlo Maria
name: Meijer, Onno
name: Pommé, Vincent
name: Colonna, Piero
Publisher: name: Technical University of Munich
Year: 2021

description: This study concerns the assessment of a novel concept for the Environmental Control System (ECS) of large rotorcraft, based on Vapour Compression Cycle (VCC) technology. Its uniqueness stands in the adoption of an electrically driven high-speed 6  8 kW centrifugal compressor, in place of the traditional volumetric machine. A steady-state model of the system has been developed and implemented using the Modelica acausal modelling language. The working fluids selected for this investigation belong to the class of low-Global Warming Potential (GWP) refrigerants. The results show that to obtain feasible compressor designs, and in particular sufficiently large flow passages, a high molecular complexity fluid must be employed as it results in adequate volume flow rate. However, compared to fluids made of simpler molecules, heat exchangers are larger and possibly heavier. The tradeoff between thermodynamic performance, weight, volume, aircraft drag penalty and system integration in general is being investigated.
Polarizability measurements in a molecule near-field interferometer
Creators: name: Berninger, Martin
name: Stefanov, André
name: Deachapunya, Sarayut
name: Arndt, Markus
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We apply near-field matter-wave interferometry to determine the absolute scalar polarizability of the fullerenes C$_{60}$ and C$_{70}$. A key feature of our experiment is the combination of good transmission and high spatial resolution, gained by wide molecular beams passing through sub-micron gratings. This allows to significantly facilitate the observation of field-dependent beam shifts. We thus measure the polarizability to be $α=88.9 \pm 0.9 \pm 5.1 \rm Å^{3}$ for C$_{60}$ and to $α= 108.5 \pm 2.0 \pm 6.2 \rm Å^{3}$ for C$_{70}$.
description: 4 pages, 4 figures
Spectral Lyapunov exponents in chaotic and localized many-body quantum systems
Creators: name: Chan, Amos
name: De Luca, Andrea
name: Chalker, J. T.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We consider the spectral statistics of the Floquet operator for disordered, periodically driven spin chains in their quantum chaotic and many-body localized phases (MBL). The spectral statistics are characterized by the traces of powers $t$ of the Floquet operator, and our approach hinges on the fact that, for integer $t$ in systems with local interactions, these traces can be re-expressed in terms of products of dual transfer matrices, each representing a spatial slice of the system. We focus on properties of the dual transfer matrix products as represented by a spectrum of Lyapunov exponents, which we call \textit{spectral Lyapunov exponents}. In particular, we examine the features of this spectrum that distinguish chaotic and MBL phases. The transfer matrices can be block-diagonalized using time-translation symmetry, and so the spectral Lyapunov exponents are classified according to a momentum in the time direction. For large $t$ we argue that the leading Lyapunov exponents in each momentum sector tend to zero in the chaotic phase, while they remain finite in the MBL phase. These conclusions are based on results from three complementary types of calculation. We find exact results for the chaotic phase by considering a Floquet random quantum circuit with on-site Hilbert space dimension $q$ in the large-$q$ limit. In the MBL phase, we show that the spectral Lyapunov exponents remain finite by systematically analyzing models of non-interacting systems, weakly coupled systems, and local integrals of motion. Numerically, we compute the Lyapunov exponents for a Floquet random quantum circuit and for the kicked Ising model in the two phases. As an additional result, we calculate exactly the higher point spectral form factors (hpSFF) in the large-$q$ limit, and show that the generalized Thouless time scales logarithmically in system size for all hpSFF in the large-$q$ chaotic phase.
description: 14+6 pages. 19 figures
Testing the inverse-Compton catastrophe scenario in the intra-day variable blazar S5 0716+71. I. Simultaneous broadband observations during November 2003
Creators: name: Ostorero, L.
name: Wagner, S. J.
name: Gracia, J.
name: Ferrero, E.
name: Krichbaum, T. P.
name: Britzen, S.
name: Witzel, A.
name: Nilsson, K.
name: Villata, M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Some intra-day variable, compact extra-galactic radio sources show brightness temperatures severely exceeding 10^{12} K, the limit set by catastrophic inverse-Compton (IC) cooling in sources of incoherent synchrotron radiation. The violation of the IC limit, possible under non-stationary conditions, would lead to IC avalanches in the soft-gamma-ray energy band during transient periods. For the first time, broadband signatures of possible IC catastrophes were searched for in S5 0716+71. A multifrequency observing campaign targetting S5 0716+71 was carried out in November 2003 under the framework of the European Network for the Investigation of Galactic nuclei through Multifrequency Analysis (ENIGMA) together with a campaign by the Whole Earth Blazar Telescope (WEBT), involving a pointing by the soft-gamma-ray satellite INTEGRAL, optical, near-infrared, sub-millimeter, millimeter, radio, and Very Long Baseline Array (VLBA) monitoring. S5 0716+71 was very bright at radio frequencies and in a rather faint optical state during the INTEGRAL pointing; significant inter-day and low intra-day variability was recorded in the radio regime, while typical fast variability features were observed in the optical band. No correlation was found between the radio and optical emission. The source was not detected by INTEGRAL, neither by the X-ray monitor JEM-X nor by the gamma-ray imager ISGRI, but upper limits to the source emission in the 3-200 keV energy band were estimated. A brightness temperature Tb>2.1x10^{14} K was inferred from the radio variability, but no corresponding signatures of IC avalanches were recorded at higher energies. The absence of IC-catastrophe signatures provides either a lower limit delta>8 to the Doppler factor affecting the radio emission or strong constraints for modelling of the Compton catastrophes in S5 0716+71.
description: 15 pages, 3 EPS figures, 3 tables, to appear in A&A
Explicit SoS lower bounds from high-dimensional expanders
Creators: name: Dinur, Irit
name: Filmus, Yuval
name: Harsha, Prahladh
name: Tulsiani, Madhur
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computational Complexity (cs.CC)
subject: Discrete Mathematics (cs.DM)
subject: Combinatorics (math.CO)
subject: Geometric Topology (math.GT)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: We construct an explicit family of 3XOR instances which is hard for $O(\sqrt{\log n})$ levels of the Sum-of-Squares hierarchy. In contrast to earlier constructions, which involve a random component, our systems can be constructed explicitly in deterministic polynomial time. Our construction is based on the high-dimensional expanders devised by Lubotzky, Samuels and Vishne, known as LSV complexes or Ramanujan complexes, and our analysis is based on two notions of expansion for these complexes: cosystolic expansion, and a local isoperimetric inequality due to Gromov. Our construction offers an interesting contrast to the recent work of Alev, Jeronimo and the last author~(FOCS 2019). They showed that 3XOR instances in which the variables correspond to vertices in a high-dimensional expander are easy to solve. In contrast, in our instances the variables correspond to the edges of the complex.
Structural implications for nectar secretion by nectaries of three columnar cacti
Creators: name: Barrera, Erick De La
name: Whaleeha Gudi?O
name: M?Rquez-Guzm?N, Judith
Publisher: name: Maejo University
Year: 2015
Subjects: floral morphology,Mexico,nectar,Pachycereae,reproductive ecophysiology,columnar cacti,Polaskia chende,Polaskia chichipe,Stenocereus quevedonis

description: 2, 9, Maejo International Journal of Science and Technology
Confrontation of Observation and Theory: High Frequency QPOs in X-ray Binaries, Tidal Disruption Events, and Active Galactic Nuclei
Creators: name: Smith, Krista Lynne
name: Tandon, Celia R.
name: Wagoner, Robert V.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We compile observations of high-frequency quasi-periodic oscillations (QPOs) around black holes, both stellar and supermassive, and compare their positions in the parameter space of black hole mass, spin, and oscillation frequency. We find that supermassive black holes occupy a separate region of parameter space than stellar, and further, that QPOs seen around tidal disruption events rather than Seyfert-type AGN occupy an entirely different space. We then compare these results to the orbital resonance, diskoseismic, warped disk, and disk-jet coupling theoretical models for the origin of high-frequency QPOs. We find that while oscillations around stellar mass black holes are generally consistent with the above models, supermassive black holes are decidedly not. Oscillations seen in tidal disruption events are consistent with oscillations near the frequency of the innermost stable circular orbit (ISCO), while QPOs in AGN are not accounted for by any of the physical models in consideration. This indicates that despite the scale invariance of accretion processes implied by a decades-wide correlation between QPO frequency and black hole mass, any theory of high frequency QPOs must relate the frequency to more than just the mass and spin.
description: 9 pages, 3 figures, 2 tables. Accepted for publication in the Astrophysical Journal
Defining the soil parameters for computing deformations caused by braced excavation
Creators: name: Linlong Mu
name: Finno, Richard J.
name: Maosong Huang
name: Taesik Kim
name: Kern, Kristi
Publisher: name: Maejo University
Year: 2015
Subjects: braced excavation,soil parameters,finite element,small strain,stress probing test

description: 2, 9, Maejo International Journal of Science and Technology
Statistical process control: Best practices in small and medium enterprises
Creators: name: Mohd Nizam Ab Rahman
name: Rosmaizura Mohd Zain
name: Afis Mohd Alias
name: Zulkifli Mohd Nopiah
Publisher: name: Maejo University
Year: 2015
Subjects: statistical process control (SPC),small and medium enterprises (SMEs),system development

description: 2, 9, Maejo International Journal of Science and Technology
Convective stabilization of a Laplacian moving boundary problem with kinetic undercooling
Creators: name: Ebert, Ute
name: Meulenbroek, Bernard
name: Schaefer, Lothar
Publisher: name: arXiv
Year: 2006
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: We study the shape stability of disks moving in an external Laplacian field in two dimensions. The problem is motivated by the motion of ionization fronts in streamer-type electric breakdown. It is mathematically equivalent to the motion of a small bubble in a Hele-Shaw cell with a regularization of kinetic undercooling type, namely a mixed Dirichlet-Neumann boundary condition for the Laplacian field on the moving boundary. Using conformal mapping techniques, linear stability analysis of the uniformly translating disk is recast into a single PDE which is exactly solvable for certain values of the regularization parameter. We concentrate on the physically most interesting exactly solvable and non-trivial case. We show that the circular solutions are linearly stable against smooth initial perturbations. In the transformation of the PDE to its normal hyperbolic form, a semigroup of automorphisms of the unit disk plays a central role. It mediates the convection of perturbations to the back of the circle where they decay. Exponential convergence to the unperturbed circle occurs along a unique slow manifold as time $t\to\infty$. Smooth temporal eigenfunctions cannot be constructed, but excluding the far back part of the circle, a discrete set of eigenfunctions does span the function space of perturbations. We believe that the observed behaviour of a convectively stabilized circle for a certain value of the regularization parameter is generic for other shapes and parameter values. Our analytical results are illustrated by figures of some typical solutions.
description: 19 pages, 7 figures, accepted for SIAM J. Appl. Math
Coalescence, Deformation and Bäcklund Symmetries of Painlevé IV and II Equations
Creators: name: Alves, V. C. C.
name: Aratyn, H.
name: Gomes, J. F.
name: Zimerman, A. H.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: We extend Painlevé IV model by adding quadratic terms to its Hamiltonian obtaining two classes of models (coalescence and deformation) that interpolate between Painlevé IV and II equations for special limits of the underlying parameters. We derive the underlying Bäcklund transformations, symmetry structure and requirements to satisfy Painlevé property.
description: 21 pages, to appear in J. Phys. A: Math. Theor. (2020)
Earthquake early warning system for geothermal binary power plant in Indonesia
Creators: name: Kranz, Stefan
name: Saadat, Ali
name: Kupfermann, Gina
name: Weber, Bernd
name: Suyanto Suyanto
Publisher: name: Technical University of Munich
Year: 2021

description: The operational safety and reliability of geothermal binary power plants is an essential aspect for the successful application of this technology. Besides the technology itself, external causes can also influence the reliability of the plants. Many geothermally used areas have an increased seismic activity which can lead to the failure of geothermal power plants. Damages can be prevented by a timely shutdown of the plant or parts of the plant, such as the turbine and thus can increase the plant reliability. We establish, test and further develop an independent early warning system at the site of the geothermal binary demonstration power plant in Pangolombian-Lahendong, (Indonesia). The density of seismic events is high enough in this area and up to now the demonstration power plant had two turbine bearing damages because of earthquakes located in the area of Northern Molucca islands. The early warning system consists of 10 Raspberry Shakes, which are Raspberry Pi based geophones and one central computer. Each Raspberry Shake is equipped with its own data processing unit and is able to send data to a central computer via mobile communication. Based on this data, operationally relevant signals for the power plant are generated such as “turbine trip” or “plant shut down” in order to prevent it from damages. Such an early warning system is not only important for geothermal power plants, it is of general relevance for sensitive infrastructure that has to be protected against damages caused by earthquakes. The most important challenge is to detect seismic events early enough and to determine their intensity fast enough in order to bring the plant into a save operating mode. Within this contribution we will present the motivation, the technical concept and the integration of the earthquake early-warning system into the power plant control system.
Three dimensional finite element analysis for preliminary establishment of tunnel influence zone subject to pile loading
Creators: name: Pornkasem Jongpradist
name: Prateep Lueprasert
name: Kitcha Charoenpak
name: Pattanasak Chaipanna
name: Suchatvee Suwansawat
Publisher: name: Maejo University
Year: 2015
Subjects: tunnel influence zone, tunnel deformation,finite element method,pile foundation,tunnel distortion

description: 2, 9, Maejo International Journal of Science and Technology
Detector Time Offset and Off-line Calibration in EAS Experiments
Creators: name: He, H. H.
name: Bernardini, P.
name: Melcarne, A. K. Calabrese
name: Chen, S. Z.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: In Extensive Air Shower (EAS) experiments, the primary direction is reconstructed by the space-time pattern of secondary particles. Thus the equalization of the transit time of signals coming from different parts of the detector is crucial in order to get the best angular resolution and pointing accuracy allowed by the detector. In this paper an off-line calibration method is proposed and studied by means of proper simulations. It allows to calibrate the array repeatedly just using the collected data without disturbing the standard acquisition. The calibration method is based on the definition of a Characteristic Plane introduced to analyze the effects of the time systematic offsets, such as the quasi-sinusoidal modulation on azimuth angle distribution. This calibration procedure works also when a pre-modulation on the primary azimuthal distribution is present.
description: 9 pages, 5 figures, submitted to Astroparticle Physics
Capping layer influence and isotropic in-plane upper critical field of the superconductivity at the FeSe/SrTiO3 interface
Creators: name: Li, Yanan
name: Wang, Ziqiao
name: Xiao, Run
name: Li, Qi
name: Wang, Ke
name: Richardella, Anthony
name: Wang, Jian
name: Samarth, Nitin
Publisher: name: arXiv
Year: 2020
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Understanding the superconductivity at the interface of FeSe/SrTiO3 is a problem of great contemporary interest due to the significant increase in critical temperature (Tc) compared to that of bulk FeSe, as well as the possibility of an unconventional pairing mechanism and topological superconductivity. We report a study of the influence of a capping layer on superconductivity in thin films of FeSe grown on SrTiO3 using molecular beam epitaxy. We used in vacuo four-probe electrical resistance measurements and ex situ magneto-transport measurements to examine the effect of three capping layers that provide distinctly different charge transfer into FeSe: compound FeTe, non-metallic Te, and metallic Zr. Our results show that FeTe provides an optimal cap that barely influences the inherent Tc found in pristine FeSe/SrTiO3, while the transfer of holes from a non-metallic Te cap completely suppresses superconductivity and leads to insulating behavior. Finally, we used ex situ magnetoresistance measurements in FeTe-capped FeSe films to extract the angular dependence of the in-plane upper critical magnetic field. Our observations reveal an almost isotropic in-plane upper critical field, providing insight into the symmetry and pairing mechanism of high temperature superconductivity in FeSe.
description: Submitted to Physical Review Materials
Improved experimental layout for dipole moment measurements at the LHC
Creators: name: Biryukov, V. M.
name: Vidal, J. Ruiz
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The electric and magnetic dipole moment of charm and bottom baryons can be measured for the first time by using bent crystal technology at the LHC. The experimental method, proposed in recent years, suffers from limited statistics, which dominates the uncertainty of the measurement. In this work, we present an alternative experimental layout, based on the use of crystal lenses, that improves the trapping efficiency by about a factor 15 (35) for a 2-cm (5-mm) target with respect to the nominal layout, with plain crystal faces. The efficiencies are evaluated taking into account the constraints from the LHC machine, and the technical challenges to realize this novel experimental method are discussed.
description: 11 pages, 9 figures; version published in EPJC
Amaurosoma armillatum
Creators: name: Šifner, František
name: R, Czech
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Scathophagidae
Amaurosoma
Amaurosoma armillatum

description: Amaurosoma armillatum (ZETTERSTEDT, 1846)
M a t e r i a l e x a m i n e d: Czech Republic: Chyňava (5950), 12.v.2016, 1♂ 2♀♀, Šifner leg. (FSPC); Boletice (7151) 12.v.2010, 1♂, Máca leg. (MMSC).
description: Published as part of Šifner, František & R, Czech, 2018, Annotated checklist of the family Scathophagidae (Diptera) in Central Europe, with new faunistics data on some species, pp. 1635-1655 in Linzer biologische Beiträge 50 (2) on page 1646, DOI: 10.5281/zenodo.5277519
Americina vittata
Creators: name: Šifner, František
name: R, Czech
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Scathophagidae
Americina
Americina vittata

description: Americina vittata (MEIGEN, 1826)
M a t e r i a l e x a m i n e d: Finland: Oulanka, Biol. Station, 22.vii.1967, 1♀; Kuusamo, Pihäjaki, 22.vii.1967, 1♀, all Mihályi leg. (HNHM). Poland: Reinerz [= Duszniki Zdrój], without date, 1♀, Oldenberg det. as A. vittata (NHMW). Slovakia: Tatry Mts., Zúberec-Brestová, 800 m a.s.l., spruce forest, 19.vii.1999, 1♂, Mocek leg. (FSCP).
description: Published as part of Šifner, František & R, Czech, 2018, Annotated checklist of the family Scathophagidae (Diptera) in Central Europe, with new faunistics data on some species, pp. 1635-1655 in Linzer biologische Beiträge 50 (2) on page 1645, DOI: 10.5281/zenodo.5277519