cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Rehabilitation options for inland waterways impacted by sulfidic sediments - Field trials in a south-eastern Australian wetland
Creators: name: Fraser, Mark
name: Baldwin, Darren S
name: Rees, Gavin N
name: Silvester, Ewen J
name: Whitworth, Kerry L
Publisher: name: La Trobe
Year: 2023

description:

MDFRC item.

The accumulation of significant pools of sulfidic sediments in inland wetlands and creeks is an emerging risk for the management of inland waterways. We used replicated plot trials to appraise the viability of various strategies for neutralizing oxidized, acidified sulfidic sediments in a highly degraded wetland. Of the twenty different treatments trialed only addition of calcium hydroxide or calcium carbonate, burning of wood, and planting of Phragmites australis, Typha domingensis and Atriplex nummularia into beds prepared with CaCO3 or P. australis and T. domingensis into beds of sediment and mulch, decreased total actual acidity (TAA) in the top 5 cm of sediment in the first two weeks following treatment. Only the calcium hydroxide treatments and planting of P. australis, T. domingensis and A. nummularia into beds prepared with CaCO3 decreased TAA for a longer period of time (6 months). None of the treatments, except the planting of P. australis into beds prepared with lime, decreased TAA in the 5e30 cm layer of sediments. Therefore, the only effective treatment appears to be the application of highly alkaline ameliorants which need to be transported to the site. A survey of the wetland was undertaken to estimate the total amount of actual and potential acidity stored in the wetland's sediment and overlying water and showed that up to 1200 tonnes of calcium carbonate would be required to neutralise all of the actual and potential acidity in the 10 ha wetland. However, neutralisation of the remaining water in the wetland (about 12.5 ML) would produce approximately 2750 m3 of metal rich sludge (approximately 100 tonnes dry weight) that would require separate disposal.
Variación temporal de fitoplancton en Bahía de Lobos, Sonora (agosto-1985 - mayo-1986) /
Creators: name: Hungar Sierra, Delia Guadalupe
Publisher: name: Universidad Autónoma de Baja California.
Year: 2022
Subjects: subject: QK934 H85 1990

description: Se realizaron muestreos superficiales mensuales, de agosto de 1985 a mayo de 1986 en seis estaciones de Bahía de Lobos, Sonora, con el fin de conocer la variación temporal de la estructura fitoplanctonica.
Synergy and redundancy in the Granger causal analysis of dynamical networks
Creators: name: Stramaglia, Sebastiano
name: Cortes, Jesus M.
name: Marinazzo, Daniele
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantitative Methods (q-bio.QM)
subject: Information Theory (cs.IT)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Biological sciences
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: We analyze by means of Granger causality the effect of synergy and redundancy in the inference (from time series data) of the information flow between subsystems of a complex network. Whilst we show that fully conditioned Granger causality is not affected by synergy, the pairwise analysis fails to put in evidence synergetic effects. In cases when the number of samples is low, thus making the fully conditioned approach unfeasible, we show that partially conditioned Granger causality is an effective approach if the set of conditioning variables is properly chosen. We consider here two different strategies (based either on informational content for the candidate driver or on selecting the variables with highest pairwise influences) for partially conditioned Granger causality and show that depending on the data structure either one or the other might be valid. On the other hand, we observe that fully conditioned approaches do not work well in presence of redundancy, thus suggesting the strategy of separating the pairwise links in two subsets: those corresponding to indirect connections of the fully conditioned Granger causality (which should thus be excluded) and links that can be ascribed to redundancy effects and, together with the results from the fully connected approach, provide a better description of the causality pattern in presence of redundancy. We finally apply these methods to two different real datasets. First, analyzing electrophysiological data from an epileptic brain, we show that synergetic effects are dominant just before seizure occurrences. Second, our analysis applied to gene expression time series from HeLa culture shows that the underlying regulatory networks are characterized by both redundancy and synergy.
Linear growth of structure in massive bigravity
Creators: name: Solomon, Adam R.
name: Akrami, Yashar
name: Koivisto, Tomi S.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The ghost-free theory of massive gravity with two dynamical metrics has been shown to produce viable cosmological expansion, where the late-time acceleration of the Universe is due to the finite range of the gravitational interaction rather than a nonzero cosmological constant. Here the cosmological perturbations are studied in this theory. The full perturbation equations are presented in a general gauge and analyzed, focusing on subhorizon scales in the quasistatic limit during the matter-dominated era. An evolution equation for the matter inhomogeneities and the parameters quantifying the deviations from general relativistic structure formation are expressed in terms of five functions whose forms are determined directly by the coupling parameters in the theory. The evolution equation has a similar structure to Horndeski-type scalar-tensor theories, exhibiting a modified growth rate and scale-dependence at intermediate wavenumbers. Predictions of the theory are confronted with observational data on both background expansion and large-scale structure, although care must be taken to ensure a model is stable. It is found that while the stable models fit the data well, they feature deviations from the standard cosmology that could be detected or ruled out by near-future experiments.
description: 37 pages, 7 figures. v3: Version accepted by JCAP
Why should I do it myself`? Hedonic and utilitarian motivations of customers' intention to use self-service technologies
Creators: name: Cetto, Alexandra
name: Klier, Julia
name: Klier, Mathias
Publisher: name: Universität Regensburg
Year: 2015
Subjects: subject: Self-service technology, Repeat use intention, Utilitarian value, Hedonic value
subject: 004 Informatik

description: Customer self-service technologies (SST) have been gaining increasing economic importance given their proliferation in the customer service industry. Self-service kiosks have gradually been replacing traditional service employees and their progress is expected to continue. The growing relevance of SST results in the need for companies to understand why customers are willing to use SST and which motivations drive SST adoption. Two central constructs determine a customer’s willingness to use SST, namely utilitarian and hedonic value. Thus, the aim of this paper is twofold: first, we explore the multidimensional nature of utilitarian and especially hedonic value. Second, we examine their relative importance in determining repeat use intention, depending on a customer’s prior experience with SST. We develop a research model based on means-end chain (MEC) theory. The results underline that both values positively influence repeat use intention of SST. While hedonic value is prevalent for customers with little experience, utilitarian value weights stronger for customers with more experience.
title: The investigation of musicians’ physiological and psychological responses to performance stress
Creators: name: Aufegger, L.
Publisher: name: Royal College of Music
Year: 2016

description: Stress in music performance shows an intrinsic relationship with changes in cardiovascular functioning and emotions, yet to date, studies analysing these stress indicators are few and far between. The overarching aim of this thesis is therefore to investigate performance stress through the lens of both self-reported anxiety and physical stress signatures in heart rate variability. For rigour, this is achieved through a close examination of the relationship
between stress and structural complexity of heart rate variability in response to different conditions musicians underwent: (1) a low- and high-stress performance and (2) a simulated performance environment. In my thesis I approached the problem in a comprehensive way and investigated five Studies. Studies 1 and 2 (Chapters 3 and 4) employ new heart rate
variability methods to analyse physical stress. Study 3 (Chapter 5) compares heart rate variability responses before and during a performance in a simulated and a real-life performance environment; Study 4 (Chapter 6) qualitatively addresses further enhancements related to simulated performance environments. Study 5 (Chapter 7) examines heart rate variability responses to simulated performance feedback of different emotional valence. Results provide conclusive evidence that musicians performing in high-stress conditions display lower levels of structural complexity in the heart rate variability (signature of high stress), in particular
prior to the performance, and a statistically significant elevation of subjective anxiety. The findings show that both simulated and real performance scenarios create similar physical and emotional responses. Interviews with musicians reveal the benefits of simulations in combination with complementary training methods. More immediate follow-up research
may focus on heart rate variability responses to other training strategies, such as Alexander Technique and physical exercise; use a greater selection of standardised self-assessments; and evaluate musicians experiencing severe performance stress, for which this thesis has paved the way.
title: Evaluating recorded performance: an investigation of music criticism
through Gramophone reviews of Beethoven piano sonata recordings
Creators: name: Alessandri, E.
Publisher: name: Royal College of Music
Year: 2014

description: Critical review of performance is today one of the most common professional and commercial forms of music written response. Despite the availability of representative material and its impact on musicians’ careers, there has been little structured enquiry into the way music critics make sense of their experience of performances, and no studies have to date broached the key question of how music performance is reviewed by experts. Adopting an explorative, inductive approach and a novel combination of data reduction and thematic analysis techniques, this thesis presents a systematic investigation of a vast corpus of recorded performance critical reviews.
First, reviews of Beethoven’s piano sonata recordings (N = 845) published in the Gramophone (1923-2010) were collected and metadata and word-stem patterns were analysed (Chapters 3 and 4) to offer insights on repertoire, pianists and critics involved and to produce a representative selection (n = 100) of reviews suitable for subsequent thematic analyses. Inductive thematic analyses, including a key-word-in-context analysis on ‘expression’ (Chapter 5), were then used to identify performance features (primary and supervenient) and extra-performance elements critics discuss, as well as reasons they use to support their value judgements. This led to a novel descriptive model of critical review of recorded performance (Chapters 6, 7, and 8). The model
captures four critical activities – evaluation, descriptive judgement, factual
information and meta-criticism – and seven basic evaluation criteria on the aesthetic and achievement-related value of performance reliably used by critics, plus two recording-specific criteria: live-performance impact and collectability.
Critical review emerges as a highly dense form of writing, rich in information
and open to diverse analytical approaches. Insights gained throughout the thesis inform current discourses in philosophy of art and open new perspectives for empirical music research. They emphasise the importance of the comparative element in performance evaluation, the complexity and potentially misleading nature of the notion of ‘expression’ in the musical discourse, and the role of critics as filters of choice in the recording market. Foremost, they further our understanding of the nature of music performance criticism as a form of reasoned evaluation that is complex,
contextual and listener specific.
High-Energy Emission from Interacting Supernovae: New Constraints on Cosmic-Ray Acceleration in Dense Circumstellar Environments
Creators: name: Murase, Kohta
name: Franckowiak, Anna
name: Maeda, Keiichi
name: Margutti, Raffaella
name: Beacom, John F.
Publisher: name: Deutsches Elektronen-Synchrotron, DESY, Hamburg
Year: 2018

description: Supernovae (SNe) with strong interactions with circumstellar material (CSM) are promising candidate sources of high-energy neutrinos and gamma rays, and have been suggested as an important contributor to Galactic cosmic rays beyond 1 PeV. Taking into account the shock dissipation by a fast velocity component of SN ejecta, we present comprehensive calculations of the non-thermal emission from SNe powered by shock interactions with a dense wind or CSM. Remarkably, we consider electromagnetic cascades in the radiation zone and subsequent attenuation in the pre-shock CSM. A new time-dependent phenomenological prescription provided by this work enables us to calculate gamma-ray, hard X-ray, radio, and neutrino signals, which originate from cosmic rays accelerated by the diffusive shock acceleration mechanism. We apply our results to SN IIn 2010jl and SN Ibn 2014C, for which the model parameters can be determined from the multi-wavelength data. For SN 2010jl, the more promising case, by using the the latest Fermi Large Area Telescope (LAT) Pass 8 data release, we derive new constraints on the cosmic-ray energy fraction, <0.05-0.1. We also find that the late-time radio data of these interacting SNe are consistent with our model. Further multi-messenger and multi-wavelength observations of nearby interacting SNe should give us new insights into the diffusive shock acceleration in dense environments as well as pre-SN mass-loss mechanisms.
STUDYING OF PARAMETERS OF THE DIRECTING MECHANISM OF A MESH PLANE BY IS DIFFICULT-HARMONIOUS VIBRATING MOVEMENT
Creators: name: DADAJANOV ARAFAT KOMILJANOVICH
name: IMOMQULOV SHUHRATJON BOQIJONOVICH
Publisher: name: Zenodo
Year: 2023
Subjects: Planar Motion, Cotton Cleaning, Inertial Method, Vibration, Teoretikal Vibration.

description: Abstract
This article is intended to present a solution of raw cotton cleaning process using inertial method of waste separation. Cleaning method is based on use of dynamic methods for waste separation. There is made analysis of such method using theoretical and experimental research. Practical implementation of such method is described. Theoretical researches define conditions of cotton piece fly and meet from cleaning grill. Parameters of the directing mechanism of a mesh plane which is generating difficult harmonious movement of cleaning grill also have been calculated. Efficiency of clearing it is checked up practical on laboratory installation with designed by authors. Finally, conclusions on research results are made.
On Quadratic Gauss Sums and Variations Thereof
Creators: name: Milgram, Michael S.
name: Glasser, Larry
Publisher: name: arXiv
Year: 2014
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11T23, 11T24, 11L03, 30B50, 42A32, 65B10

description: A number of new terminating series involving $\sin(n^2/k)$ and $\cos(n^2/k)$ are presented and connected to Gauss quadratic sums. Several new closed forms of generic Gauss quadratic sums are obtained and previously known results are generalized.
description: Minor revisions and corrections
Force Field Analysis Suggests a Lowering of Diffusion Barriers in Atomic Manipulation Due to Presence of STM Tip
Creators: name: Emmrich, Matthias
name: Schneiderbauer, Maximilian
name: Huber, Ferdinand
name: Weymouth, Alfred J.
name: Okabayashi, Norio
name: Giessibl, Franz J.
Publisher: name: Universität Regensburg
Year: 2015
Subjects: subject: 530 Physik
subject: 68.37.Ef
subject: 66.35.+a
subject: 68.37.Ps

description: We study the physics of atomic manipulation of CO on a Cu(111) surface by combined scanning tunneling microscopy and atomic force microscopy at liquid helium temperatures. In atomic manipulation, an adsorbed atom or molecule is arranged on the surface using the interaction of the adsorbate with substrate and tip. While previous experiments are consistent with a linear superposition model of tip and substrate forces, we find that the force threshold depends on the force field of the tip. Here, we use carbon monoxide front atom identification (COFI) to characterize the tip’s force field. Tips that show COFI profiles with an attractive center can manipulate CO in any direction while tips with a repulsive center can only manipulate in certain directions. The force thresholds are independent of bias voltage in a range from 1 to 10 mV and independent of temperature in a range of 4.5 to 7.5 K.
Metadata
Creators: name: Prazanowska, Karolina
name: Lim, Su Bin
Publisher: name: figshare
Year: 2023
Subjects: Genomics and transcriptomics
Cancer cell biology

description: Cell-level metadata of the scRNA-seq NSCLC integrated dataset, including cell type annotation, validation dataset prediction scores, QC metrics, patient id, gender, study of origin, tumor subtype and stage.
Universal quantum gates on microwave photons assisted by circuit quantum electrodynamics
Creators: name: Hua, Ming
name: Tao, Ming-Jie
name: Deng, Fu-Guo
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Based on a microwave-photon quantum processor with two superconducting resonators coupled to one transmon qutrit, we construct the controlled-phase (c-phase) gate on microwave-photon-resonator qudits, by combination of the photon-number-dependent frequency-shift effect on the transmon qutrit by the first resonator and the resonant operation between the qutrit and the second resonator. This distinct feature provides us a useful way to achieve the c-phase gate on the two resonator qudits with a higher fidelity and a shorter operation time, compared with the previous proposals. The fidelity of our c-phase gate can reach 99.51% within 93 ns. Moreover, our device can be extended easily to construct the three-qudit gates on three resonator qudits, far different from the existing proposals. Our controlled-controlled-phase gate on three resonator qudits is accomplished with the assistance of a transmon qutrit and its fidelity can reach 92.92% within 124.64 ns.
description: 9 pages, 5 figures
Dudeková Kováčová, Gabriela (Hg.): V supermarkete dejín. Podoby moderných dejín a spoločnosti v stredoeurópskom priestore. [Im Supermarkt der Geschichte. Formen moderner Geschichte und Gesellschaft im mitteleuropäischen Raum]
Creators: name: Melcher, Matthias
Publisher: name: Bohemia
Year: 2021

description: Bohemia, Bd. 61 Nr. 1 (2021): ‎
Quasi-classical description of molecular dynamics based on Egorov's theorem
Creators: name: Keller, Johannes
name: Lasser, Caroline
Publisher: name: arXiv
Year: 2014
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Egorov's theorem on the classical propagation of quantum observables is related to prominent quasi-classical descriptions of quantum molecuar dynamics as the linearized semiclassical initial value representation (LSC-IVR), the Wigner phase space method or the statistical quasiclassical method. The error estimates show that different accuracies are achievable for the computation of expectation values and position densities. Numerical experiments for a Morse model of diatomic iodine and confined Henon-Heiles systems in various dimensions illustrate the theoretical results.
description: 14 pages, 12 figures
Fenología reproductiva de Gigartina caniculata Harvey (Gigartinales, Rhodophyta), durante un ciclo anual en el ejido Erendira y Popotla, Baja California, México /
Creators: name: Lopez Carrillo, Manuel
Publisher: name: Universidad Autónoma de Baja California.
Year: 2022
Subjects: subject: QK569 .G5 L66 1990

description: Gigartina canaliculata Harvery representa a un recurso algal marino de gran importancia comercial y económica para Baja California, México.
Correlation evolution and monogamy of two geometric quantum discords in multipartite systems
Creators: name: Bai, Yan-Kui
name: Zhang, Ting-Ting
name: Wang, Li-Tao
name: Wang, Z. D.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We explore two different geometric quantum discords defined respectively via the trace norm (GQD-1) and Hilbert-Schmidt norm (GQD-2) in multipartite systems. A rigorous hierarchy relation is revealed for the two GQDs in a class of symmetric two-qubit $X$-shape states. For multiqubit pure states, it is found that both GQDs are related to the entanglement concurrence, with the hierarchy relation being saturated. Furthermore, we look into a four-partite dynamical system consisting of two cavities interacting with independent reservoirs. It is found that the GQD-2 can exhibit various sudden change behaviours, while the GQD-1 only evolves asymptotically, with the two GQDs exhibiting different monogamous properties.
description: 5 pages, 3 figures
Giving Cosmic Redshift Drift a Whirl
Creators: name: Kim, Alex G.
name: Linder, Eric V.
name: Edelstein, Jerry
name: Erskine, David
Publisher: name: arXiv
Year: 2014
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Redshift drift provides a direct kinematic measurement of cosmic acceleration but it occurs with a characteristic time scale of a Hubble time. Thus redshift observations with a challenging precision of $10^{-9}$ require a 10 year time span to obtain a signal-to-noise of 1. We discuss theoretical and experimental approaches to address this challenge, potentially requiring less observer time and having greater immunity to common systematics. On the theoretical side we explore allowing the universe, rather than the observer, to provide long time spans; speculative methods include radial baryon acoustic oscillations, cosmic pulsars, and strongly lensed quasars. On the experimental side, we explore beating down the redshift precision using differential interferometric techniques, including externally dispersed interferometers and spatial heterodyne spectroscopy. Low-redshift emission line galaxies are identified as having high cosmology leverage and systematics control, with an 8 hour exposure on a 10-meter telescope (1000 hours of exposure on a 40-meter telescope) potentially capable of measuring the redshift of a galaxy to a precision of $10^{-8}$ (few $\times 10^{-10}$). Low-redshift redshift drift also has very strong complementarity with cosmic microwave background measurements, with the combination achieving a dark energy figure of merit of nearly 300 (1400) for 5% (1%) precision on drift.
description: 18 pages, 8 figures. Accepted for publication in Astroparticle Physics
Eddington Bias for Cosmic Neutrino Sources
Creators: name: Strotjohann, Nora Linn
name: Kowalski, Marek
name: Franckowiak, Anna
Publisher: name: Deutsches Elektronen-Synchrotron, DESY, Hamburg
Year: 2018

description: We describe a consequence of the Eddington bias which occurs when a single astrophysical neutrino event is used to infer the neutrino flux of the source. A trial factor is introduced by the potentially large number of similar sources that remain undetected and if not accounting for this factor the luminosity of the observed source can be overestimated by several orders of magnitude. Based on the resulting, unrealistically high neutrino fluxes, associations between high-energy neutrinos and potential counterparts or emission scenarios were rejected in the past. Correcting for the bias might justify a reevaluation of these cases.
An Analytical Derivation of the Efficient Surface in Portfolio Selection with Three Criteria
Creators: name: Qi, Yue
name: Steuer, Ralph E.
name: Wimmer, Maximilian
Publisher: name: Universität Regensburg
Year: 2017
Subjects: subject: MUTUAL FUNDS; OPTIMIZATION; MANAGEMENT; OBJECTIVES; FRONTIER; MODEL; Multiple criteria optimization; Tri-criterion portfolio selection; Minimumvariance frontier; e-Constraint method; Efficient surface; Paraboloids
subject: 330 Wirtschaft

description: In standard mean-variance bi-criterion portfolio selection, the efficient set is a frontier. While it is not yet standard for there to be additional criteria in portfolio selection, there has been a growing amount of discussion in the literature on the topic. However, should there be even one additional criterion, the efficient frontier becomes an efficient surface. Striving to parallel Merton's seminal analytical derivation of the efficient frontier, in this paper we provide an analytical derivation of the efficient surface when an additional linear criterion (on top of expected return and variance) is included in the model addressed by Merton. Among the results of the paper there is, as a higher dimensional counterpart to the 2-mutual-fund theorem of traditional portfolio selection, a 3-mutual-fund theorem in tricriterion portfolio selection. 3D graphs are employed to stress the paraboloidic/ hyperboloidic structures present in tri-criterion portfolio selection.
Supernova PTF12glz: a possible shock breakout driven through an aspherical wind
Creators: name: Soumagnac, Maayane T.
name: Ofek, Eran O.
name: Gal-Yam, Avishay
name: Waxmann, Eli
name: Ginzburg, Sivan
name: Strotjohann, Nora Linn
name: Barlow, Tom A.
name: Behar, Ehud
name: Chelouche, Doron
name: Fremling, Christoffer
name: Ganot, Noam
name: Gerazi, Suvi
name: Kasliwal, Mansi M.
name: Kaspi, Shai
name: Kulkarni, Shrinivas R.
name: Laher, Russ R.
name: Laor, Ari
name: Maoz, Dan
name: Martin, Christopher D.
name: Nakar, Ehud
name: Neill, James D.
name: Netzer, Hagai
name: Nugent, Peter E.
name: Poznanski, Dovi
name: Schulze, Steve
name: Yaron, Ofer
Publisher: name: Deutsches Elektronen-Synchrotron, DESY, Hamburg
Year: 2018

description: We present visible-light and ultraviolet (UV) observations of the supernova PTF12glz. The SN was discovered and monitored in near-UV and R bands as part of a joint GALEX and Palomar Transient Factory campaign. It is among the most energetic Type IIn supernovae observed to date (~10^51erg). If the radiated energy mainly came from the thermalization of the shock kinetic energy, we show that PTF12glz was surrounded by ~1 solar mass of circumstellar material (CSM) prior to its explosive death. PTF12glz shows a puzzling peculiarity: at early times, while the freely expanding ejecta are presumably masked by the optically thick CSM, the radius of the blackbody that best fits the observations grows at ~8000km/s. Such a velocity is characteristic of fast moving ejecta rather than optically thick CSM. This phase of radial expansion takes place before any spectroscopic signature of expanding ejecta appears in the spectrum and while both the spectroscopic data and the bolometric luminosity seem to indicate that the CSM is optically thick. We propose a geometrical solution to this puzzle, involving an aspherical structure of the CSM around PTF12glz. By modeling radiative diffusion through a slab of CSM, we show that an aspherical geometry of the CSM can result in a growing effective radius. This simple model also allows us to recover the decreasing blackbody temperature of PTF12glz. SLAB-Diffusion, the code we wrote to model the radiative diffusion of photons through a slab of CSM and evaluate the observed radius and temperature, is made available on-line.
Large Plastic Scintillator Panels with WLS Fiber Readout; Optimization of Components
Creators: name: Bugg, W.
name: Efremenko, Yu.
name: Vasilyev, S.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: Results are presented on R&D efforts to design and build large size veto panels, optimized for underground low background experiments, in the most efficient and economical way using commercially available components. A variety of plastic scintillators, photomultiplier tubes, wavelength shifting fibers, and light reflector combinations were tested. Results of these studies and performance of a 2.2 meter long panel are presented.
description: 6 pages, 9 figures, 2 figures replaced, added references 6, submitted to Nuclear Inst. and Methods in Physics Research A
New measurement of the flavor composition of high-energy neutrino events with contained vertices in IceCube
Creators: name: Stachurska, Juliana
Publisher: name: Deutsches Elektronen-Synchrotron, DESY, Hamburg
Year: 2018

description: XXVIII International Conference on Neutrino Physics and Astrophysics, NEUTRINO 2018, Heidelberg, Germany, 4 Jun 2018 - 9 Jun 2018
BICEP2 II: Experiment and Three-Year Data Set
Creators: name: BICEP2 Collaboration
name: Ade, P. A. R
name: Aikin, R. W.
name: Amiri, M.
name: Barkats, D.
name: Benton, S. J.
name: Bischoff, C. A.
name: Bock, J. J.
name: Brevik, J. A.
name: Buder, I.
name: Bullock, E.
name: Davis, G.
name: Dowell, C. D.
name: Duband, L.
name: Filippini, J. P.
name: Fliescher, S.
name: Golwala, S. R.
name: Halpern, M.
name: Hasselfield, M.
name: Hildebrandt, S. R.
name: Hilton, G. C.
name: Hristov, V. V.
name: Irwin, K. D.
name: Karkare, K. S.
name: Kaufman, J. P.
name: Keating, B. G.
name: Kernasovskiy, S. A.
name: Kovac, J. M.
name: Kuo, C. L.
name: Leitch, E. M.
name: Llombart, N.
name: Lueker, M.
name: Netterfield, C. B.
name: Nguyen, H. T.
name: O'Brient, R.
name: Ogburn, R. W.
name: Orlando, A.
name: Pryke, C.
name: Reintsema, C. D.
name: Richter, S.
name: Schwarz, R.
name: Sheehy, C. D.
name: Staniszewski, Z. K.
name: Story, K. T.
name: Sudiwala, R. V.
name: Teply, G. P.
name: Tolan, J. E.
name: Turner, A. D.
name: Vieregg, A. G.
name: Wilson, P.
name: Wong, C. L.
name: Yoon, K. W.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: We report on the design and performance of the BICEP2 instrument and on its three-year data set. BICEP2 was designed to measure the polarization of the cosmic microwave background (CMB) on angular scales of 1 to 5 degrees ($\ell$=40-200), near the expected peak of the B-mode polarization signature of primordial gravitational waves from cosmic inflation. Measuring B-modes requires dramatic improvements in sensitivity combined with exquisite control of systematics. The BICEP2 telescope observed from the South Pole with a 26~cm aperture and cold, on-axis, refractive optics. BICEP2 also adopted a new detector design in which beam-defining slot antenna arrays couple to transition-edge sensor (TES) bolometers, all fabricated on a common substrate. The antenna-coupled TES detectors supported scalable fabrication and multiplexed readout that allowed BICEP2 to achieve a high detector count of 500 bolometers at 150 GHz, giving unprecedented sensitivity to B-modes at degree angular scales. After optimization of detector and readout parameters, BICEP2 achieved an instrument noise-equivalent temperature of 15.8 $μ$K sqrt(s). The full data set reached Stokes Q and U map depths of 87.2 nK in square-degree pixels (5.2 $μ$K arcmin) over an effective area of 384 square degrees within a 1000 square degree field. These are the deepest CMB polarization maps at degree angular scales to date. The power spectrum analysis presented in a companion paper has resulted in a significant detection of B-mode polarization at degree scales.
description: 30 pages, 24 figures
Quantum percolation transition in 3d: density of states, finite size scaling and multifractality
Creators: name: Ujfalusi, Laszlo
name: Varga, Imre
Publisher: name: arXiv
Year: 2014
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: The phase diagram of the metal-insulator transition in a three dimensional quantum percolation problem is investigated numerically based on the multifractal analysis of the eigenstates. The large scale numerical simulation has been performed on systems with linear sizes up to $L=140$. The multifractal dimensions, exponents $D_q$ and $α_q$, have been determined in the range of $0\leq q\leq 1$. Our results confirm that this problem belongs to the same universality class as the three dimensional Anderson model, the critical exponent of the localization length was found to be $ν=1.622\pm 0.035$. The mulifractal function, $f(α)$, appears to be universal, however, the exponents $D_q$ and $α_q$ produced anomalous variations along the phase boundary, $p_c^Q(E)$.
description: 15 pages, 10 figures with altogether 37 subparts
Squeezing: the ups and downs
Creators: name: Gorska, K.
name: Horzela, A.
name: Szafraniec, F. H.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mathematical Physics (math-ph)
subject: Functional Analysis (math.FA)
subject: Operator Algebras (math.OA)
subject: Spectral Theory (math.SP)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We present an operator theoretic side of the story of squeezed states regardless the order of squeezing. For low order, that is for displacement (order 1) and squeeze (order 2) operators, we bring back to consciousness what is know or rather what has to be known by making the exposition as exhaustive as possible. For the order 2 (squeeze) we propose an interesting model of the Segal-Bargmann type. For higher order the impossibility of squeezing in the traditional sense is proved rigorously. Nevertheless what we offer is the state-of-the-art concerning the topic.
description: 21 pages; improved presentation; it has been published by Proceedings of the Royal Society A
Puffy Dark Matter
Creators: name: Chu, Xiaoyong
name: Garcia-Cely, Camilo
name: Murayama, Hitoshi
Publisher: name: Deutsches Elektronen-Synchrotron, DESY, Hamburg
Year: 2018

description: If dark matter has a finite size that is larger than its Compton wavelength, the corresponding self-interaction cross section decreases with the velocity. We investigate the implications of this Puffy Dark Matter for addressing the small-scale problems of the $\Lambda$CDM model. In particular, we show that the way the non-relativistic cross section varies with the velocity is largely independent of the dark matter internal structure when the range of the mediating force is very short. We present an explicit example in the context of a QCD-like theory of dark matter and show that low-threshold direct detection experiments have the potential to probe Puffy Dark Matter.
Transport across a carbon nanotube quantum dot contacted with ferromagnetic leads: Experiment and nonperturbative modeling
Creators: name: Dirnaichner, Alois
name: Grifoni, Milena
name: Prüfling, Andreas
name: Steininger, Daniel
name: Hüttel, Andreas K.
name: Strunk, Christoph
Publisher: name: Universität Regensburg
Year: 2015
Subjects: subject: 530 Physik

description: We present measurements of tunneling magnetoresistance (TMR) in single-wall carbon nanotubes attached to ferromagnetic contacts in the Coulomb blockade regime. Strong variations of the TMR with gate voltage over a range of four conductance resonances, including a peculiar double-dip signature, are observed. The data are compared to calculations in the “dressed second order” (DSO) framework. In this nonperturbative theory, conductance peak positions and linewidths are affected by charge fluctuations incorporating the properties of the carbon nanotube quantum dot and the ferromagnetic leads. The theory is able to qualitatively reproduce the experimental data.
Quantum Nonlinear Optics Near Optomechanical Instabilities
Creators: name: Xu, Xunnong
name: Gullans, Michael
name: Taylor, Jacob M.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Optomechanical systems provide a unique platform for observing quantum behavior of macroscopic objects. However, efforts towards realizing nonlinear behavior at the single photon level have been inhibited by the small size of the radiation pressure interaction. Here we show that it is not necessary to reach the single-photon strong-coupling regime in order to realize significant optomechanical nonlinearities. Instead, nonlinearities at the few quanta level can be achieved, even with weak-coupling, in a two-mode optomechanical system driven near instability. In this limit, we establish a new figure of merit for realizing strong nonlinearity which scales with the single-photon optomechanical coupling and the sideband resolution of the mechanical mode with respect to the cavity linewidth. We find that current devices based on optomechanical crystals, thought to be in the weak-coupling regime, can still achieve strong quantum nonlinearity; enabling deterministic interactions between single photons.
description: 6+3 pages, 3 figures
Factorization breaking of four-quark condensates in the Nambu Jona Lasinio model
Creators: name: Braghin, Fabio L.
name: Navarra, Fernando S.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We investigate the factorization hypothesis of the four-quark condensate $\langle q \bar{q} q \bar{q} \rangle = \, A \, \langle q \bar{q} \rangle^2$ with the help of the Nambu Jona-Lasinio Model supplemented with eighth order interactions. For that purpose we use the bosonization method with multiple auxiliary variables. We find that in a simplified U(1) version of the model factorization holds, whereas in the full SU(3)-flavor version of the model factorization is broken by terms which are related to the 't Hooft interactions.
description: 10 pages, revised version, some corrected expressions
WFPC2 UV survey of Galactic Globular Clusters. The Horizontal Branch temperature distribution
Creators: name: Lagioia, E. P.
name: Dalessandro, E.
name: Ferraro, F. R.
name: Lanzoni, B.
name: Salaris, M.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Ultraviolet observations are the best tool to study hot stellar populations which emit most of their light at short wavelengths. As part of a large project devoted to the characterization of the UV properties of Galactic globular clusters (GGCs), we collected mid/far UV and optical images with the WFPC2@HST for 31 GGCs. These clusters cover a wide range in metallicity and structural parameters, thus representing an ideal sample for comparison with theoretical models. Here we present the first results from an ongoing analysis aimed at deriving the temperature distribution of Horizontal Branch stars in GGCs.
description: 6 pages, 5 figures. Proceeding "ESO/NUVA/IAG Workshop on Challenges in UV Astronomy, ESO Garching, 7-11 October 2013", to be published in Astrophysics and Space Science "Special Issue: UV Astronomy 3"
title: Endangered Species Act Section 7(a)(2) Biological Opinion and Magnuson-Stevens Fishery Conservation and Management Act Essential Fish Habitat Response for a 2-year extension of the U.S. Army Corps of Engineers’ Regional General Permit 12 to the California Department of Fish and Wildlife for Implementation of Anadromous Fish Habitat Restoration Projects in Northern and Central Coastal California (Corps File No. 2003-279220)
titleType: Other
Creators: name: United States. National Marine Fisheries Service. West Coast Region
Publisher: name: United States. National Marine Fisheries Service. West Coast Region
Year: 2020

description: ESA Section 7 Consultation ; WCRO-2020-02938
PT-Symmetric Phonon Laser
Creators: name: Jing, H.
name: Ozdemir, Sahin K.
name: Lv, Xin-You
name: Zhang, Jing
name: Yang, Lan
name: Nori, Franco
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: By exploiting recent developments associated with coupled microcavities, we introduce the concept of PT-symmetric phonon laser with balanced gain and loss. This is accomplished by introducing gain to one of the microcavities such that it balances the passive loss of the other. In the vicinity of the gain-loss balance, a strong nonlinear relation emerges between the intracavity photon intensity and the input power. This then leads to a giant enhancement of both optical pressure and mechanical gain, resulting in a highly efficient phonon-lasing action. These results provide a promising approach for manipulating optomechanical systems through PT-symmetric concepts. Potential applications range from enhancing mechanical cooling to designing phonon-laser amplifiers.
description: 8pages, 7 figures
title: Heinrich Neuhaus: aesthetics and philosophy of an interpretation
Creators: name: Razumovskaya, M.
Publisher: name: Royal College of Music
Year: 2014

description: This thesis investigates one of the key figures of Russian pianism in the twentieth century, Heinrich Gustavovich Neuhaus (1888 – 1964). Although Neuhaus is known, particularly in the West, as an important pedagogue of the Moscow Conservatory rather than a performing artist in his own right, this thesis seeks to address the tension between Neuhaus’s identities as a pedagogue and his overshadowed conception of himself as a performer – thus presenting a fuller understanding of his specific attitude to the task of musical interpretation.
The reader is introduced to aspects of Neuhaus’s biography which became decisive factors in the formation of his key aesthetic, philosophical, pedagogical and performative beliefs. The diverse national influences in Neuhaus’s upbringing – from his familial circumstances, European education and subsequent career in Russia – are investigated in order to help locate Neuhaus within the wider contexts of Russian and Central European culture at the turn of the nineteenth and twentieth centuries. In addition, this introduction will highlight ways in which Neuhaus’s national identity has been oversimplified in recent literature by both Russian and non-Russian authors. Whilst this thesis draws on a range of contemporaneous and recent international sources throughout its investigation, it presents a substantial amount of Russian-language material that has previously been unavailable in an English translation: this includes many writings and articles by Heinrich Neuhaus, his colleagues and the leading musicologists and critics of his time.The core of the thesis traces Neuhaus’s personal philosophical approach to the act of performance and explores the impact it had on his interpretations of Beethoven and Chopin. This will show that despite aspiring to a modern, Urtext-centred approach and sensibility to the score, Neuhaus’s Romantic subjectivity meant that he was unafraid of making assumptions and decisions which often misinterpreted or transformed the image of the composer to reflect his own artistic identity. Thus, the investigation of Heinrich Neuhaus as a performing artist, alongside his role as a pedagogue, presents a powerful model of interpretation as a creative process, from which performers today can learn.
Realization of lepton masses and mixing angles from point interactions in an extra dimension
Creators: name: Fujimoto, Yukihiro
name: Nishiwaki, Kenji
name: Sakamoto, Makoto
name: Takahashi, Ryo
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We investigate a model on an extra dimension $S^1$ where plenty of effective boundary points described by point interactions (zero-thickness branes) are arranged. After suitably selecting the conditions on these points for each type of five-dimensional fields, we realize the tiny active neutrino masses, the charged lepton mass hierarchy, and lepton mixings with a CP-violating phase, simultaneously. Not only the quark's but also the lepton's configurations are generated in a unified way with acceptable accuracy, with neither the see-saw mechanism nor symmetries in Yukawa couplings, by suitably setting the model parameters, even though their flavor structures are dissimilar each other. One remarkable point is that a complex vacuum expectation value of the five-dimensional Higgs doublet in this model becomes the common origin of the CP violation in both quark and lepton sectors. The model can be consistent with the results of the precision electroweak measurements and Large Hadron Collider experiments.
description: 29 pages, 7 figures (v1); 28 pages, 7 figures in JHEP style file, published version in JHEP, a subsection added, typo fixed (v2)
Two-mode squeezed states in cavity optomechanics via engineering of a single reservoir
Creators: name: Woolley, M. J.
name: Clerk, A. A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study theoretically a three-mode optomechanical system where two mechanical oscillators are independently coupled to a single cavity mode. By optimized two-tone or four-tone driving of the cavity one can prepare the mechanical oscillators in an entangled two-mode squeezed state, even if they start in a thermal state. The highly-pure, symmetric steady-state achieved allows the optimal fidelity of standard continuous-variable teleportation protocols to be achieved. In contrast to other reservoir engineering approaches to generating mechanical entanglement, only a single reservoir is required to prepare the highly-pure entangled steady-state, greatly simplifying experimental implementation. The entanglement may be verified via a bound on the Duan inequality obtained from the cavity output spectrum. A similar technique may be used for the preparation of a highly-pure two-mode squeezed state of two cavity modes, coupled to a common mechanical oscillator.
description: 19 pages, 10 figures
Cuantificación del volumen de sedimento depositado frente al rompeolas (lado no protegido) del Puerto de Ensenada, B. C. /
Creators: name: Dooren Osio, Karina Van
Publisher: name: Universidad Autónoma de Baja California.
Year: 2022
Subjects: subject: GC380.15 D66 1991

description: A raíz de una serie de problemas que se presentaron en el rompeolas del Puerto de Ensenada, principalmente de rebase por oleaje en épocas de tormenta se realiza un estudio del volumen de sedimento depositado frene al rompeolas con la finalidad de establecer el efecto sobre la estructura.