cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Deviation inequalities for stochastic approximation by averaging
Creators: name: Fan, Xiequan
name: Alquier, Pierre
name: Doukhan, Paul
Publisher: name: arXiv
Year: 2021
Subjects: subject: Probability (math.PR)
subject: Optimization and Control (math.OC)
subject: Machine Learning (stat.ML)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: 60G42, 60J05, 60F10, 60E15

description: We introduce a class of Markov chains, that contains the model of stochastic approximation by averaging and non-averaging. Using martingale approximation method, we establish various deviation inequalities for separately Lipschitz functions of such a chain, with different moment conditions on some dominating random variables of martingale differences.Finally, we apply these inequalities to the stochastic approximation by averaging and empirical risk minimisation.
description: 35 pages
SAFETY OF HYDRAULIC STRUCTURES
Creators: name: Umarov, Furqat
Publisher: name: Zenodo
Year: 2023

description: Hydraulic structures are critical components of water resource management systems, playing a pivotal role in flood control, irrigation, and water supply. Ensuring the safety of these structures is of paramount importance to safeguard human lives, property, and the environment. This scientific article explores the legislative framework for the safety of hydraulic structures in Uzbekistan, analyzing the recently enacted law and its implications. The article also reviews international best practices and discusses the key aspects of hydraulic structure safety, including design, maintenance, and risk management.
Communio - Communio ecclesiarum - Communio hierarchica
Creators: name: Rahner, Johanna
Publisher: name: Internationale katholische Zeitschrift Communio
Year: 2022

description: Internationale katholische Zeitschrift Communio, Bd. 39 Nr. 6 (2010): Internationale katholische Zeitschrift Communio, Band 39, Heft 6
Summing parquet diagrams using the functional renormalization group: X-ray problem revisited
Creators: name: Lange, Philipp
name: Drukier, Casper
name: Sharma, Anand
name: Kopietz, Peter
Publisher: name: arXiv
Year: 2015
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We present a simple method for summing so-called parquet diagrams of fermionic many-body systems with competing instabilities using the functional renormalization group. Our method is based on partial bosonization of the interaction utilizing multi-channel Hubbard-Stratonovich transformations. A simple truncation of the resulting flow equations, retaining only the frequency-independent parts of the two-point and three-point vertices amounts to solving coupled Bethe-Salpeter equations for the effective interaction to leading logarithmic order. We apply our method by revisiting the X-ray problem and deriving the singular frequency dependence of the X-ray response function and the particle-particle susceptibility. Our method is quite general and should be useful in many-body problems involving strong fluctuations in several scattering channels.
description: Bibliography has been revised and updated 9 pages, 4 figures
Macro-Average: Rare Types Are Important Too
Creators: name: Gowda, Thamme
name: You, Weiqiu
name: Lignos, Constantine
name: May, Jonathan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computation and Language (cs.CL)
subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: While traditional corpus-level evaluation metrics for machine translation (MT) correlate well with fluency, they struggle to reflect adequacy. Model-based MT metrics trained on segment-level human judgments have emerged as an attractive replacement due to strong correlation results. These models, however, require potentially expensive re-training for new domains and languages. Furthermore, their decisions are inherently non-transparent and appear to reflect unwelcome biases. We explore the simple type-based classifier metric, MacroF1, and study its applicability to MT evaluation. We find that MacroF1 is competitive on direct assessment, and outperforms others in indicating downstream cross-lingual information retrieval task performance. Further, we show that MacroF1 can be used to effectively compare supervised and unsupervised neural machine translation, and reveal significant qualitative differences in the methods' outputs.
Loss of In Vivo Replication Fitness of HIV-1 Variants Resistant to the Tat Inhibitor, dCA
Creators: name: Begum, Nurjahan
name: Garcia, J. Victor
name: Wahl, Angela
name: Leda, Ana R.
name: Ling, Lijun
name: Spagnuolo, Rae Ann
name: Valente, Susana T.
Publisher: name: MDPI
Year: 2023

description: HIV resistance to the Tat inhibitor didehydro-cortistatin A (dCA) in vitro correlates with higher levels of Tat-independent viral transcription and a seeming inability to enter latency, which rendered resistant isolates more susceptible to CTL-mediated immune clearance. Here, we investigated the ability of dCA-resistant viruses to replicate in vivo using a humanized mouse model of HIV infection. Animals were infected with WT or two dCA-resistant HIV-1 isolates in the absence of dCA and followed for 5 weeks. dCA-resistant viruses exhibited lower replication rates compared to WT. Viral replication was suppressed early after infection, with viral emergence at later time points. Multiplex analysis of cytokine and chemokines from plasma samples early after infection revealed no differences in expression levels between groups, suggesting that dCA-resistance viruses did not elicit potent innate immune responses capable of blocking the establishment of infection. Viral single genome sequencing results from plasma samples collected at euthanasia revealed that at least half of the total number of mutations in the LTR region of the HIV genome considered essential for dCA evasion reverted to WT. These results suggest that dCA-resistant viruses identified in vitro suffer a fitness cost in vivo, with mutations in LTR and Nef pressured to revert to wild type.
Untersuchung der Teillastfahrweise von Oxyfuel-Kraftwerken
Creators: name: Hasenbein, Christoph
Publisher: name: TUHH Universitätsbibliothek
Year: 2025
Subjects: subject: CCS
subject: carbon capture and storage
subject: oxyfuel
subject: part-load
subject: power plant
classificationCode: 6
subject: Technology::621: Applied Physics

description: Die vorliegende Dissertation beschäftigt sich mit der Teillastfahrweise von Oxyfuel-Kraftwerken. Sie untersucht durch Simulationen das Verhalten des Gesamtprozesses bei Teillast am Beispiel eines steinkohlebefeuerten Oxyfuel-Prozesses. Der Fokus liegt auf den Einflüssen der dafür wichtigen Komponenten Luftzerlegungsanlage, Dampferzeuger und zwei Varianten der Rauchgasaufbereitungsanlage sowie der Falschluft.
description: This PhD thesis investigates the part load behaviour of oxyfuel power plants. With simulations the behaviour of the overall process for part load is analysed using the example of a hard coal fired oxyfuel power plant. The thesis focuses on the influences of the major plant components air separation unit, steam generator, two variants of the flue gas treatment unit and ingress of air.
Quantitative mixing and dissipation enhancement property of Ornstein-Uhlenbeck flow
Creators: name: Pappalettera, Umberto
Publisher: name: arXiv
Year: 2021
Subjects: subject: Probability (math.PR)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: This work deals with mixing and dissipation ehancement for the solution of advection-diffusion equation driven by a Ornstein-Uhlenbeck velocity field. We are able to prove a quantitative mixing result, uniform in the diffusion parameter, and enhancement of dissipation over a finite time horizon.
description: 27 pages
All-optical non-Markovian stroboscopic quantum simulator
Creators: name: Jin, Jiasen
name: Giovannetti, Vittorio
name: Fazio, Rosario
name: Sciarrino, Fabio
name: Mataloni, Paolo
name: Crespi, Andrea
name: Osellame, Roberto
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: An all-optical scheme for simulating non-Markovian evolution of a quantum system is proposed. It uses only linear optics elements and by controlling the system parameters allows one to control the presence or absence of information backflow from the environment. A sufficient and necessary condition for the non-Markovianity of our channel based on Gaussian inputs is proved. Various criteria for detecting non-Markovianity are also investigated by checking the dynamical evolution of the channel.
description: 7 figures. Typos are corrected and new reference is added
True masses of the long-period companions to HD 92987 and HD 221420 from Hipparcos-Gaia astrometry
Creators: name: Venner, Alexander
name: Vanderburg, Andrew
name: Pearce, Logan A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The extensive timespan of modern radial velocity surveys has made the discovery of long-period substellar companions more common in recent years, however measuring the true masses of these objects remains challenging. Astrometry from the Gaia mission is expected to provide mass measurements for many of these long-period companions, but this data is not yet available. However, combining proper motion data from Gaia DR2 and the earlier Hipparcos mission makes it possible to measure true masses of substellar companions in favourable cases. In this work, we combine radial velocities with Hipparcos-Gaia astrometry to measure the true masses of two recently discovered long-period substellar companion candidates, HD 92987 B and HD 221420 b. In both cases, we find that the true masses are significantly higher than implied by radial velocities alone. A $2087 \pm 19$ m s$^{-1}$ astrometric signal reveals that HD 92987 B is not close to its $17$ $M_J$ minimum mass but is instead a $0.2562 \pm 0.0045$ $M_\odot$ star viewed at a near-polar orbital inclination, whereas the $22.9 \pm 2.2$ $M_J$ HD 221420 b can be plausibly interpreted as a high-mass "super-planet" or a low-mass brown dwarf. With semi-major axes of $\sim$10 AU both companions are interesting targets for direct imaging, and HD 221420 b in particular would be a benchmark metal-rich substellar object if it proves possible to directly detect. Our results demonstrate the power of Hipparcos-Gaia astrometry for studying long-period planet and brown dwarf candidates discovered from radial velocity surveys.
description: 25 pages, 10 figures, 7 tables. Published in AJ. Minor textual revisions compared to version 1
Das Mysterium der Kirche in der Theologie Joseph Ratzingers
Creators: name: Galṽao, Henrique Noronha De
Publisher: name: Internationale katholische Zeitschrift Communio
Year: 2022

description: Internationale katholische Zeitschrift Communio, Bd. 39 Nr. 6 (2010): Internationale katholische Zeitschrift Communio, Band 39, Heft 6
A Historical Gazetteer of American Summer Camps
Creators: name: Foster, Corinne S.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2022
Subjects: Geographic information systems
Information retrieval
Geodatabases
Historical source material
Data mining

description: Gazetteers (dictionaries of place names, their classifications, and locations) are fundamental to GIS systems. Historical gazetteers especially are an important resource for aggregating knowledge about places across time, and allow for types of data analysis possible only at scale. With the renewed interest in gazetteers as tools for the digital humanities, there has been a rise in domain-specific gazetteers. One sphere that has yet to develop a historical gazetteer is the organized camping industry. Organized camping, termed thus to distinguish it from the less structured and formalized forms of family camping or backpacking, originated in the late 19th century in the United States and has since spread across the globe. The available primary source material (annual directories and guidebooks dating back to the 1920s) particularly lends itself to the creation of a gazetteer of summer camps in the US. To make the creation of such a gazetteer possible, this project developed a text mining program to turn early editions of the Porter Sargent Handbook of Summer Camps (the most comprehensive camp directories) into the foundations of a gazetteer. Once expanded and enriched, this geodatabase will serve as a resource for the American Camp Association (ACA), the industry’s primary professional organization.
Relaxation processes in a system with logarithmic growth
Creators: name: Brown, Mark O.
name: Galyean, Robert H.
name: Wang, Xiangwen
name: Pleimling, Michel
Publisher: name: arXiv
Year: 2015
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We discuss relaxation and aging processes in the one- and two-dimensional $ABC$ models. In these driven diffusive systems of three particle types, biased exchanges in one direction yield a coarsening process characterized in the long time limit by a logarithmic growth of ordered domains that take the form of stripes. From the time-dependent length, derived from the equal-time spatial correlator, and from the mean displacement of individual particles different regimes in the formation and growth of these domains can be identified. Analysis of two-times correlation and response functions reveals dynamical scaling in the asymptotic logarithmic growth regime as well as complicated finite-time and finite-size effects in the early and intermediate time regimes.
description: 25 pages, 11 figures, accepted for publication in Physical Review E
Prominent characteristics of recurrent neuronal networks are robust against low synaptic weight resolution
Creators: name: Dasbach, Stefan
name: Tetzlaff, Tom
name: Diesmann, Markus
name: Senk, Johanna
Publisher: name: arXiv
Year: 2021
Subjects: subject: Neurons and Cognition (q-bio.NC)
subject: FOS: Biological sciences

description: The representation of the natural-density, heterogeneous connectivity of neuronal network models at relevant spatial scales remains a challenge for Computational Neuroscience and Neuromorphic Computing. In particular, the memory demands imposed by the vast number of synapses in brain-scale network simulations constitutes a major obstacle. Limiting the number resolution of synaptic weights appears to be a natural strategy to reduce memory and compute load. In this study, we investigate the effects of a limited synaptic-weight resolution on the dynamics of recurrent spiking neuronal networks resembling local cortical circuits, and develop strategies for minimizing deviations from the dynamics of networks with high-resolution synaptic weights. We mimic the effect of a limited synaptic weight resolution by replacing normally distributed synaptic weights by weights drawn from a discrete distribution, and compare the resulting statistics characterizing firing rates, spike-train irregularity, and correlation coefficients with the reference solution. We show that a naive discretization of synaptic weights generally leads to a distortion of the spike-train statistics. Only if the weights are discretized such that the mean and the variance of the total synaptic input currents are preserved, the firing statistics remains unaffected for the types of networks considered in this study. For networks with sufficiently heterogeneous in-degrees, the firing statistics can be preserved even if all synaptic weights are replaced by the mean of the weight distribution. We conclude that even for simple networks with non-plastic neurons and synapses, a discretization of synaptic weights can lead to substantial deviations in the firing statistics, unless the discretization is performed with care and guided by a rigorous validation process.
description: 39 pages, 8 figures, 5 tables
Lognormal distribution of firing time and rate from a single neuron?
Creators: name: Kish, Eszter A.
name: Granqvist, Claes-Goran
name: Der, Andras
name: Kish, Laszlo B.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Biological Physics (physics.bio-ph)
subject: Neurons and Cognition (q-bio.NC)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: Even a single neuron may be able to produce significant lognormal features in its firing statistics due to noise in the charging ion current. A mathematical scheme introduced in advanced nanotechnology is relevant for the analysis of this mechanism in the simplest case, the integrate-and-fire model with white noise in the charging ion current.
description: Accepted for publication in Cognitive Neurodynamics (Springer)
Comments submitted by Philippe Grandjean & Esben Budtz-Jørgensen for the Public consultation on the draft risk assessment of perfluoroalkyl substances in food
Creators: name: Grandjean, Philippe
name: Budtz-Jørgensen, Esben
Publisher: name: Zenodo
Year: 2020
Subjects: subject: PFAS
subject: risk assessment
subject: public consultation
subject: http://id.agrisemantics.org/gacs/C1470

description: The file was submitted by Philippe Grandjean & Esben Budtz-Jørgensen together with their contribution to the Public Consultation launched in February 2020 by the European Food Safety Authority on the draft risk assessment of perfluoroalkyl substances in food.
description: EU; PDF; biocontam@efsa.europa.eu
Die Ekklesia aus Juden und Heiden
Creators: name: Weidemann, Hans-Ulrich
Publisher: name: Internationale katholische Zeitschrift Communio
Year: 2022

description: Internationale katholische Zeitschrift Communio, Bd. 39 Nr. 6 (2010): Internationale katholische Zeitschrift Communio, Band 39, Heft 6
Matter Quantum Corrections to the Graviton Self-Energy and the Newtonian Potential
Creators: name: Burns, Daniel
name: Pilaftsis, Apostolos
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We revisit the calculation of matter quantum effects on the graviton self-energy on a flat Minkowski background, with the aim to acquire a deeper understanding of the mechanism that renders the graviton massless. To this end, we derive a low-energy theorem which directly relates the radiative corrections of the cosmological constant to those of the graviton mass to all orders in perturbation theory. As an illustrative example, we consider an Abelian Higgs model with minimal coupling to gravity and show explicitly how a suitable renormalization of the cosmological constant leads to the vanishing of the graviton mass at the one-loop level. In the same Abelian Higgs model, we also calculate the matter quantum corrections to the Newtonian potential and present analytical formulae in terms of modified Bessel and Struve functions of the particle masses in the loop. We show that the correction to the Newtonian potential exhibits an exponential fall-off dependence on the distance $r$, once the non-relativistic limit with respect to the non-zero loop mass is carefully considered. For massless scalars, fermions and gauge bosons in the loops, we recover the well-known results presented in the literature.
description: 31 pages, 9 figures, typos in some equations eliminated, version to be submitted to the journal
The Component Diagnosability of General Networks
Creators: name: Zhuang, Hongbin
name: Guo, Wenzhong
name: Li, Xiaoyan
name: Liu, Ximeng
name: Lin, Cheng-Kuan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: Discrete Mathematics (cs.DM)
subject: FOS: Computer and information sciences

description: The processor failures in a multiprocessor system have a negative impact on its distributed computing efficiency. Because of the rapid expansion of multiprocessor systems, the importance of fault diagnosis is becoming increasingly prominent. The $h$-component diagnosability of $G$, denoted by $ct_{h}(G)$, is the maximum number of nodes of the faulty set $F$ that is correctly identified in a system, and the number of components in $G-F$ is at least $h$. In this paper, we determine the $(h+1)$-component diagnosability of general networks under the PMC model and MM$^{*}$ model. As applications, the component diagnosability is explored for some well-known networks, including complete cubic networks, hierarchical cubic networks, generalized exchanged hypercubes, dual-cube-like networks, hierarchical hypercubes, Cayley graphs generated by transposition trees (except star graphs), and DQcube as well. Furthermore, we provide some comparison results between the component diagnosability and other fault diagnosabilities.
description: 21 pages, 11 figures
Comments submitted by the German Federal Institute for Risk Assessment (Bundesinstitut für Risikobewertung – BfR) for the Public consultation on the draft risk assessment of perfluoroalkyl substances in food
Creators: name: German Federal Institute For Risk Assessment (Bundesinstitut Für Risikobewertung – BfR)
Publisher: name: Zenodo
Year: 2020
Subjects: subject: PFAS
subject: risk assessment
subject: public consultation
subject: http://id.agrisemantics.org/gacs/C1470

description: The file was submitted by the German Federal Institute for Risk Assessment (Bundesinstitut für Risikobewertung – BfR) together with their contribution to the Public Consultation launched in February 2020 by the European Food Safety Authority on the draft risk assessment of perfluoroalkyl substances in food.
description: EU; PDF; biocontam@efsa.europa.eu
Binary comb models for FRB 121102
Creators: name: Wada, Tomoki
name: Ioka, Kunihito
name: Zhang, Bing
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The first repeating fast radio burst source, FRB 121102, is observed to emit bursts periodically. We show that FRB 121102 can be interpreted as an interacting neutron star binary system with an orbital period of 159 days. We develop a binary comb model by introducing an eccentricity in the orbit. Besides the original funnel mode of the binary comb model, which was applied to FRB 180916.J0158+65 by Ioka and Zhang 2020, we also identify two new modes of the binary comb model, i.e. the tau-crossing mode and the inverse funnel mode, and apply them to interpret FRB 121102. These new developments expand the applicable parameter space, allowing the companion star to be a massive star, a massive black hole, or a supermassive black hole, with the latter two having larger parameter spaces. These models are also consistent with other observations, such as the persistent bright radio counterpart associated with the source. We also argue that the observed frequency dependence of the active window does not disfavor the binary comb model, in contrast to recent claims, and propose two possible scenarios to interpret the data.
description: 23 pages, 12 figures, 1 table
Sgoldstino-Higgs mixing in models with low-scale supersymmetry breaking
Creators: name: Astapov, K. O.
name: Demidov, S. V.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We consider a supersymmetric extension of the Standard Model with low-scale supersymmetry breaking. Besides usual superpartners it contains additional chiral goldstino supermultiplet whose scalar components - sgoldstinos can mix with scalars from the Higgs sector of the model. We show that this mixing can have considerable impact on phenomenology of the lightest Higgs boson and scalar sgoldstino. In particular, the latter can be a good candidate for explanation of 2-sigma LEP excess with mass around 98 GeV.
description: 34 pages, 14 figures. Reference has been added, misprints eliminated
Graphdiyne: a two-dimensional thermoelectric material with high figure of merit
Creators: name: Sun, L.
name: Jiang, P. H.
name: Liu, H. J.
name: Fan, D. D.
name: Liang, J. H.
name: Wei, J.
name: Cheng, L.
name: Zhang, J.
name: Shi, J.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: As a new carbon allotrope, the recently fabricated graphdiyne has attracted much attention due to its interesting two-dimensional character. Here we demonstrate by multiscale computations that, unlike graphene, graphdiyne has a natural band gap, and simultaneously possess high electrical conductivity, large Seebeck coefficient, and low thermal conductivity. At a carrier concentration of 2.74*10^11/cm^2 for holes and 1.62*10^11/cm^2 for electrons, the room temperature ZT value of graphdiyne can be optimized to 3.0 and 4.8, respectively, which makes it an ideal system to realize the concept of "phonon-glass and electron-crystal" in the thermoelectric community.
The Addition of Sprint Interval Training to Field Lacrosse Training Increases Rate of Torque Development and Contractile Impulse in Female High School Field Lacrosse Players
Creators: name: Symons, T Brock
name: Roberts, Alexandra
name: Carter, Kathleen A
name: Caruso, John F
Publisher: name: La Trobe
Year: 2023
Subjects: classificationCode: 4207
subject: Sports science and exercise

description: Field lacrosse requires sudden directional changes and rapid acceleration/deceleration. The capacity to perform these skills is dependent on explosive muscle force production. Limited research exists on the potential of sprint interval training (SIT) to impact explosive muscle force production in field lacrosse players. The purpose of this study is to examine SIT, concurrent to field-lacrosse-specific training, on the rate of torque development (RTD), contractile impulse, and muscle function in female high school field lacrosse players (n = 12; 16 ± 1 yrs.). SIT was performed three times per week, concurrent to field-lacrosse-specific training, for 12 weeks. Right lower-limb muscle performance was assessed pre-, mid-, and post-SIT training via isometric and isokinetic concentric knee extensor contractions. Outcomes included RTD (Nm·s−1), contractile impulse (Nm·s), and peak torque (Nm). RTD for the first 50 ms of contraction improved by 42% by midseason and remained elevated at postseason (p = 0.004, effect size (ES) = −577.3 to 66.5). Contractile impulse demonstrated a training effect across 0–50 ms (42%, p = 0.004, ES = −1.4 to 0.4), 0–100 ms (33%, p = 0.018, ES = 3.1 to 0.9), and 0–200 ms (22%, p = 0.031, ES = −7.8 to 1.6). Isometric (0 rad·s−1) and concentric (3.1 rad·s−1) strength increased by 20% (p = 0.002, ES = −60.8 to −20.8) and 9% (p = 0.038, ES = −18.2 to 0.0) from SIT and field-lacrosse-specific training, respectively (p < 0.05). SIT, concurrent to field-lacrosse-specific training, enhanced lower-limb skeletal muscle performance, which may enable greater sport-specific gains.
Renormalization, averaging, conservation laws and AdS (in)stability
Creators: name: Craps, Ben
name: Evnin, Oleg
name: Vanhoof, Joris
Publisher: name: arXiv
Year: 2014
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: We continue our analytic investigations of non-linear spherically symmetric perturbations around the anti-de Sitter background in gravity-scalar field systems, and focus on conservation laws restricting the (perturbatively) slow drift of energy between the different normal modes due to non-linearities. We discover two conservation laws in addition to the energy conservation previously discussed in relation to AdS instability. A similar set of three conservation laws was previously noted for a self-interacting scalar field in a non-dynamical AdS background, and we highlight the similarities of this system to the fully dynamical case of gravitational instability. The nature of these conservation laws is best understood through an appeal to averaging methods which allow one to derive an effective Lagrangian or Hamiltonian description of the slow energy transfer between the normal modes. The conservation laws in question then follow from explicit symmetries of this averaged effective theory.
description: v3: 28 pages, minor improvements, JHEP version
Tripathi Connection in Finsler Geometry
Creators: name: Soleiman, A.
name: Taha, Ebtsam H.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics

description: Adopting the pullback formalism, a new linear connection in Finsler geometry has been introduced and investigated. Such connection unifies all formerly known Finsler connections and some other connections not introduced so far. Also, our connection is a Finslerian version of the Tripathi connection introduced in Riemannian geometry. The existence and uniqueness of such connection is proved intrinsically. An explicit intrinsic expression relating this connection to Cartan connection is obtained. Some generalized Finsler connections are constructed from Tripathi Finsler connection, by applying the P1-process and C-process introduced by Matsumoto. Finally, under certain conditions, many special Finsler connections are given.
description: 17 pages, 1 figure
Das Konzil und die Kirche
Creators: name: Stubenrauch, Bertram
name: Seewald, Michael
Publisher: name: Internationale katholische Zeitschrift Communio
Year: 2022

description: Internationale katholische Zeitschrift Communio, Bd. 39 Nr. 6 (2010): Internationale katholische Zeitschrift Communio, Band 39, Heft 6
Cross-Layer Multi-Cloud Real-Time Application QoS Monitoring and Benchmarking As-a-Service Framework
Creators: name: Alhamazani, Khalid
name: Ranjan, Rajiv
name: Jayaraman, Prem Prakash
name: Mitra, Karan
name: Liu, Chang
name: Rabhi, Fethi
name: Georgakopoulos, Dimitrios
name: Wang, Lizhe
Publisher: name: arXiv
Year: 2015
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: FOS: Computer and information sciences

description: Cloud computing provides on-demand access to affordable hardware (multi-core CPUs, GPUs, disks, and networking equipment) and software (databases, application servers and data processing frameworks) platforms with features such as elasticity, pay-per-use, low upfront investment and low time to market. This has led to the proliferation of business critical applications that leverage various cloud platforms. Such applications hosted on single or multiple cloud provider platforms have diverse characteristics requiring extensive monitoring and benchmarking mechanisms to ensure run-time Quality of Service (QoS) (e.g., latency and throughput). This paper proposes, develops and validates CLAMBS:Cross-Layer Multi-Cloud Application Monitoring and Benchmarking as-a-Service for efficient QoS monitoring and benchmarking of cloud applications hosted on multi-clouds environments. The major highlight of CLAMBS is its capability of monitoring and benchmarking individual application components such as databases and web servers, distributed across cloud layers, spread among multiple cloud providers. We validate CLAMBS using prototype implementation and extensive experimentation and show that CLAMBS efficiently monitors and benchmarks application components on multi-cloud platforms including Amazon EC2 and Microsoft Azure.
description: A revised version of this technical report has been accepted for publication by IEEE Transactions on Cloud Computing on April 29, 2015
HIV-1 Protease Inhibitors Incorporating Stereochemically Defined P2′ Ligands to Optimize Hydrogen Bonding in the Substrate Envelope
Creators: name: Spielvogel, E.
name: Schiffer, C.A.
name: Nalivaika, E.A.
name: Yilmaz, N.K.
name: Ali, A.
name: Kosovrasti, K.
name: Lockbaum, G.J.
name: Swanstrom, R.
name: Henes, M.
name: Rusere, L.N.
name: Lee, S.-K.
Publisher: name: American Chemical Society
Year: 2019

description: A structure-guided design strategy was used to improve the resistance profile of HIV-1 protease inhibitors by optimizing hydrogen bonding and van der Waals interactions with the protease while staying within the substrate envelope. Stereoisomers of 4-(1-hydroxyethyl)benzene and 4-(1,2-dihydroxyethyl)benzene moieties were explored as P2′ ligands providing pairs of diastereoisomers epimeric at P2′, which exhibited distinct potency profiles depending on the configuration of the hydroxyl group and size of the P1′ group. While compounds with the 4-(1-hydroxyethyl)benzene P2′ moiety maintained excellent antiviral potency against a panel of multidrug-resistant HIV-1 strains, analogues with the polar 4-(1,2-dihydroxyethyl)benzene moiety were less potent, and only the (R)-epimer incorporating a larger 2-ethylbutyl P1′ group showed improved potency. Crystal structures of protease-inhibitor complexes revealed strong hydrogen bonding interactions of both (R)- and (S)-stereoisomers of the hydroxyethyl group with Asp30′. Notably, the (R)-dihydroxyethyl group was involved in a unique pattern of direct hydrogen bonding interactions with the backbone amides of Asp29′ and Asp30′. The SAR data and analysis of crystal structures provide insights for optimizing these promising HIV-1 protease inhibitors. © 2019 American Chemical Society.
A method for preserving nominally-resolved flow patterns in low-resolution ocean simulations
Creators: name: Shevchenko, Igor
name: Berloff, Pavel
Publisher: name: arXiv
Year: 2021
Subjects: subject: Dynamical Systems (math.DS)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: Accurate representation of large-scale flow patterns in low-resolution ocean simulations is one of the most challenging problems in ocean modelling. The main difficulty is to correctly reproduce effects of unresolved small scales on the resolved large scales. For this purpose, most of current research is focused on development of parameterisations accounting for the small scales. In this work we propose an alternative to the mainstream ideas by showing how to reconstruct a dynamical system from the available reference solution data (our proxy for observations) and, then, how to use this system for modelling not only large-scale but also nominally-resolved flow patterns at low resolutions. The proposed methodology robustly allows to retrieve a system of equations underlying reduced dynamics of the observed data. Remarkably, its solutions simulate not only large-scale but also small-scale flow features, which can be nominally resolved by the low-resolution grid.
LHC Phenomenology of Type II Seesaw: Nondegenerate Case
Creators: name: Han, Zhi-Long
name: Ding, Ran
name: Liao, Yi
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this paper, we thoroughly investigate the LHC phenomenology of the type II seesaw mechanism for neutrino masses in the nondegenerate case where the triplet scalars of various charge ($H^{\pm\pm}, H^\pm, H^0, A^0$) have different masses. Compared with the degenerate case, the cascade decays of scalars lead to many new, interesting signal channels. In the positive scenario where $M_{H^{\pm\pm}}M_{H^\pm}>M_{H^0/A^0}$, the detection of $H^{\pm\pm}$ is more challenging, when the cascade decay $H^{\pm\pm}\to H^{\pm}W^{\pm*}$ is dominant. The most important channel is the associated $H^{\pm}H^0/A^0$ production in the final state $\ell^\pm\cancel{E}_Tb\bar{b}b\bar{b}$, which requires a luminosity of 109/fb for a $5σ$ discovery, while the final state $\ell^\pm\cancel{E}_Tb\bar{b}τ^+τ^-$ is less promising. Moreover, the associated $H^0A^0$ production can give same signals as the standard model Higgs pair production. With a much larger cross section, the $H^0A^0$ production in the final state $b\bar{b}τ^+τ^-$ could reach $3σ$ significance at 14 TeV LHC with a luminosity of 300/fb. In summary, with an integrated luminosity of order 500/fb, the triplet scalars can be fully reconstructed at 14 TeV LHC in the negative scenario.
description: 41 pages, 20 figures, 7 tables. Version 2 accepted by PRD. 41 pages, 18 figures. Main changes are, (1) rewording in secs III and IV, removing 2 figs and quoting ref [34]; (2) a paragraph added before eq (10) to clarify constraints from electroweak precision data; (3) a paper added to ref [11]. No changes in results
Air du Drapeau ("lou Drapeu"), appartenant au répertoire de la bravade de Saint-Tropez, joué aux fifres de roseau par Fabre père et fils
Creators: name: Musée National Des Arts Et Traditions Populaires (Paris)
name: Centre D'ethnologie Française
Publisher: name: École des Hautes Études en Sciences Sociales; Institut  interdisciplinaire d'anthropologie du contemporain (Paris); Laboratoire d'anthropologie et d'histoire de l'institution de la culture (Paris)
Year: 2024

Abstract
On the convergence of the nonlocal nonlinear model to the classical elasticity equation
Creators: name: Erbay, H. A.
name: Erbay, S.
name: Erkip, A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35Q74, 74B20, 74H20, 74J30

description: We consider a general class of convolution-type nonlocal wave equations modeling bidirectional propagation of nonlinear waves in a continuous medium. In the limit of vanishing nonlocality we study the behavior of solutions to the Cauchy problem. We prove that, as the kernel functions of the convolution integral approach the Dirac delta function, the solutions converge strongly to the corresponding solutions of the classical elasticity equation. An energy estimate with no loss of derivative plays a critical role in proving the convergence result. As a typical example, we consider the continuous limit of the discrete lattice dynamic model (the Fermi-Pasta-Ulam-Tsingou model) and show that, as the lattice spacing approaches zero, solutions to the discrete lattice equation converge to the corresponding solutions of the classical elasticity equation.
description: 17 pages
Human Immunodeficiency Virus Type 1 RNA Detected in the Central Nervous System (CNS) after Years of Suppressive Antiretroviral Therapy Can Originate from a Replicating CNS Reservoir or Clonally Expanded Cells
Creators: name: Gisslén, M.
name: Price, R.W.
name: Archin, N.
name: Eron, J.J.
name: Swanstrom, R.
name: Vinikoor, M.J.
name: Kashuba, A.
name: Menezes, P.
name: Joseph, S.B.
name: Kincer, L.P.
name: Evans, C.
name: Lippincott, C.K.
name: Spudich, S.
name: Bowman, N.M.
name: Robertson, K.
Publisher: name: Oxford University Press
Year: 2019

description: Background: Human immunodeficiency virus type 1 (HIV-1) populations are detected in cerebrospinal fluid (CSF) of some people on suppressive antiretroviral therapy (ART). Detailed analysis of these populations may reveal whether they are produced by central nervous system (CNS) reservoirs. Methods: We performed a study of 101 asymptomatic participants on stable ART. HIV-1 RNA concentrations were cross-sectionally measured in CSF and plasma. In participants with CSF HIV-1 RNA concentrations sufficient for analysis, viral populations were genetically and phenotypically characterized over multiple time points. Results: For 6% of participants (6 of 101), the concentration of HIV-1 RNA in their CSF was ≥0.5 log copies/mL above that of plasma (ie, CSF escape). We generated viral envelope sequences from CSF of 3 participants. One had a persistent CSF escape population that was macrophage-tropic, partially drug resistant, genetically diverse, and closely related to a minor macrophage-tropic lineage present in the blood prior to viral suppression and enriched for after ART. Two participants (1 suppressed and 1 not) had transient CSF escape populations that were R5 T cell-tropic with little genetic diversity. Conclusions: Extensive analysis of viral populations in 1 participant revealed that CSF escape was from a persistently replicating population, likely in macrophages/microglia, present in the CNS over 3 years of ART. CSF escape in 2 other participants was likely produced by trafficking and transient expansion of infected T cells in the CNS. Our results show that CNS reservoirs can persist during ART and that CSF escape is not exclusively produced by replicating CNS reservoirs. © 2019 The Author(s).
Comments submitted by the National Institute for Public Health and the Environment (RIVM) for the Public consultation on the draft risk assessment of perfluoroalkyl substances in food
Creators: name: National Institute For Public Health And The Environment (RIVM)
Publisher: name: Zenodo
Year: 2020
Subjects: subject: PFAS
subject: risk assessment
subject: public consultation
subject: http://id.agrisemantics.org/gacs/C1470

description: The files were submitted by the National Institute for Public Health and the Environment (RIVM) together with their contribution to the Public Consultation launched in February 2020 by the European Food Safety Authority on the draft risk assessment of perfluoroalkyl substances in food.
description: EU; PDF; biocontam@efsa.europa.eu
Simulating dynamical quantum Hall effect with superconducting qubits
Creators: name: Yang, Xu-Chen
name: Zhang, Dan-Wei
name: Xu, Peng
name: Yu, Yang
name: Zhu, Shi-Liang
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We propose an experimental scheme to simulate the dynamical quantum Hall effect and the related interaction-induced topological transition with a superconducting-qubit array. We show that a one-dimensional Heisenberg model with tunable parameters can be realized in an array of superconducting qubits. The quantized plateaus, which is a feature of the dynamical quantum Hall effect, will emerge in the Berry curvature of the superconducting qubits as a function of the coupling strength between nearest neighbor qubits. We numerically calculate the Berry curvatures of two-, four- and six-qubit arrays, and find that the interaction-induced topological transition can be easily observed with the simplest two-qubit array. Furthermore, we analyze some practical conditions in typical experiments for observing such dynamical quantum Hall effect.
description: 9 pages, 6 figures, version accepted by PRA
Specific heat of Ba$_{0.59}$K$_{0.41}$Fe$_{2}$As$_{2}$, and a new method for identifying the electron contribution: two electron bands with different energy gaps in the superconducting state
Creators: name: Rotundu, C. R.
name: Forrest, T. R.
name: Phillips, N. E.
name: Birgeneau, R. J.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We report measurements of the specific heat of Ba$_{0.59}$K$_{0.41}$Fe$_{2}$As$_{2}$, an Fe-pnictide superconductor with $T_c$ = 36.9 K, for which there are suggestions of an unusual electron pairing mechanism. We use a new method of analysis of the data to derive the parameters characteristic of the electron contribution. It is based on comparisons of $α$-model expressions for the electron contribution with the total measured specific heat, which give the electron contribution directly. It obviates the need in the conventional analyses for an independent, necessarily approximate, determination of the lattice contribution, which is subtracted from the total specific heat to obtain the electron contribution. It eliminates the uncertainties and errors in the electron contribution that follow from the approximations in the determination of the lattice contribution. Our values of the parameters characteristic of the electron contribution differ significantly from those obtained in conventional analyses of specific-heat data for five similar hole-doped BaFe$_{2}$As$_{2}$ superconductors, which also differ significantly among themselves. They show that the electron density of states is comprised of contributions from two electron bands with superconducting-state energy gaps that differ by a factor 3.8, with 77$\%$ coming from the band with the larger gap. The variation of the specific heat with magnetic field is consistent with extended $s$-wave pairing, one of the theoretical predictions. The relation between the densities of states and the energy gaps in the two bands is not consistent with a theoretical model based on interband interactions alone. Comparison of the normal-state density of states with band-structure calculations shows an extraordinarily large effective mass enhancement, for which there is no precedent in similar materials and no theoretical explanation.
description: 30 pages, 7 figures, submitted
Picomolar to Micromolar: Elucidating the Role of Distal Mutations in HIV-1 Protease in Conferring Drug Resistance
Creators: name: Spielvogel, E.
name: Lockbaum, G.J.
name: Lee, S.-K.
name: Nachum, G.S.
name: Leidner, F.
name: Nalivaika, E.A.
name: Schiffer, C.A.
name: Henes, M.
name: Bolon, D.N.A.
name: Zhou, S.
name: Kurt Yilmaz, N.
name: Kosovrasti, K.
name: Swanstrom, R.
Publisher: name: American Chemical Society
Year: 2019

description: Drug resistance continues to be a growing global problem. The efficacy of small molecule inhibitors is threatened by pools of genetic diversity in all systems, including antibacterials, antifungals, cancer therapeutics, and antivirals. Resistant variants often include combinations of active site mutations and distal "secondary" mutations, which are thought to compensate for losses in enzymatic activity. HIV-1 protease is the ideal model system to investigate these combinations and underlying molecular mechanisms of resistance. Darunavir (DRV) binds wild-type (WT) HIV-1 protease with a potency of <5 pM, but we have identified a protease variant that loses potency to DRV 150â»000-fold, with 11 mutations in and outside the active site. To elucidate the roles of these mutations in DRV resistance, we used a multidisciplinary approach, combining enzymatic assays, crystallography, and molecular dynamics simulations. Analysis of protease variants with 1, 2, 4, 8, 9, 10, and 11 mutations showed that the primary active site mutations caused â¼50-fold loss in potency (2 mutations), while distal mutations outside the active site further decreased DRV potency from 13 nM (8 mutations) to 0.76 μM (11 mutations). Crystal structures and simulations revealed that distal mutations induce subtle changes that are dynamically propagated through the protease. Our results reveal that changes remote from the active site directly and dramatically impact the potency of the inhibitor. Moreover, we find interdependent effects of mutations in conferring high levels of resistance. These mechanisms of resistance are likely applicable to many other quickly evolving drug targets, and the insights may have implications for the design of more robust inhibitors. © 2019 American Chemical Society.