cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Strong parametric dispersive shifts in a statically decoupled multi-qubit cavity QED system
Creators: name: Noh, T.
name: Xiao, Z.
name: Cicak, K.
name: Jin, X. Y.
name: Doucet, E.
name: Teufel, J.
name: Aumentado, J.
name: Govia, L. C. G.
name: Ranzani, L.
name: Kamal, A.
name: Simmonds, R. W.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Cavity quantum electrodynamics (QED) with in-situ tunable interactions is important for developing novel systems for quantum simulation and computing. The ability to tune the dispersive shifts of a cavity QED system provides more functionality for performing either quantum measurements or logical manipulations. Here, we couple two transmon qubits to a lumped-element cavity through a shared dc-SQUID. Our design balances the mutual capacitive and inductive circuit components so that both qubits are highly decoupled from the cavity, offering protection from decoherence processes. We show that by parametrically driving the SQUID with an oscillating flux it is possible to independently tune the interactions between either of the qubits and the cavity dynamically. The strength and detuning of this cavity QED interaction can be fully controlled through the choice of the parametric pump frequency and amplitude. As a practical demonstration, we perform pulsed parametric dispersive readout of both qubits while statically decoupled from the cavity. The dispersive frequency shifts of the cavity mode follow the expected magnitude and sign based on simple theory that is supported by a more thorough theoretical investigation. This parametric approach creates a new tunable cavity QED framework for developing quantum information systems with various future applications, such as entanglement and error correction via multi-qubit parity readout, state and entanglement stabilization, and parametric logical gates.
description: 7 pages, 4 figures
How dust fragmentation may be beneficial to planetary growth by pebble accretion
Creators: name: Drazkowska, Joanna
name: Stammler, Sebastian M.
name: Birnstiel, Til
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Pebble accretion is an emerging paradigm for the fast growth of planetary cores. Pebble flux and pebble sizes are the key parameters used in the pebble accretion models. We aim to derive the pebble sizes and fluxes from state-of-the-art dust coagulation models, understand their dependence on disk parameters and the fragmentation threshold velocity, and the impact of those on the planetary growth by pebble accretion. We use a one-dimensional dust evolution model including dust growth and fragmentation to calculate realistic pebble sizes and mass flux. We use this information to integrate the growth of planetary embryos placed at various locations in the protoplanetary disk. Pebble flux strongly depends on disk properties, such as its size and turbulence level, as well as on the dust aggregates fragmentation threshold. We find that dust fragmentation may be beneficial to planetary growth in multiple ways. First of all, it prevents the solids from growing to very large sizes, for which the efficiency of pebble accretion drops. What is more, small pebbles are depleted at a slower rate, providing a long-lasting pebble flux. As the full coagulation models are computationally expensive, we provide a simple method of estimating pebble sizes and flux in any protoplanetary disk model without substructure and with any fragmentation threshold velocity.
description: 12 pages, 8 figures; accepted for publication in Astronomy & Astrophysics; a video presentation is available on http://exoplanet-talks.org/talk/186
On Combinatorics of the Arthur Trace Formula, Convex Polytopes, and Toric Varieties
Creators: name: Asgari, Mahdi
name: Kaveh, Kiumars
Publisher: name: arXiv
Year: 2021
Subjects: subject: Number Theory (math.NT)
subject: Algebraic Geometry (math.AG)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 11F72, 14M25

description: We explicate the combinatorial/geometric ingredients of Arthur's proof of the convergence and polynomiality, in a truncation parameter, of his non-invariant trace formula. Starting with a fan in a real, finite dimensional, vector space and a collection of functions, one for each cone in the fan, we introduce a combinatorial truncated function with respect to a polytope normal to the fan and prove the analogues of Arthur's results on the convergence and polynomiality of the integral of this truncated function over the vector space. The convergence statements clarify the important role of certain combinatorial subsets that appear in Arthur's work and provide a crucial partition that amounts to a so-called nearest face partition. The polynomiality statements can be thought of as far reaching extensions of the Ehrhart polynomial. Our proof of polynomiality relies on the Lawrence-Varchenko conical decomposition and readily implies an extension of the well-known combinatorial lemma of Langlands. The Khovanskii-Pukhlikov virtual polytopes are an important ingredient here. Finally, we give some geometric interpretations of our combinatorial truncation on toric varieties as a measure and a Lefschetz number.
description: 35 pages, 17 figures; accepted version for publication in the Canadian Journal of Mathematics
Association of molecules using a resonantly modulated magnetic field
Creators: name: Hanna, Thomas M.
name: Koehler, Thorsten
name: Burnett, Keith
Publisher: name: arXiv
Year: 2006
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We study the process of associating molecules from atomic gases using a magnetic field modulation that is resonant with the molecular binding energy. We show that maximal conversion is obtained by optimising the amplitude and frequency of the modulation for the particular temperature and density of the gas. For small modulation amplitudes, resonant coupling of an unbound atom pair to a molecule occurs at a modulation frequency corresponding to the sum of the molecular binding energy and the relative kinetic energy of the atom pair. An atom pair with an off-resonant energy has a probability of association which oscillates with a frequency and time-varying amplitude which are primarily dependent on its detuning. Increasing the amplitude of the modulation tends to result in less energetic atom pairs being resonantly coupled to the molecular state, and also alters the dynamics of the transfer from continuum states with off-resonant energies. This leads to maxima and minima in the total conversion from the gas as a function of the modulation amplitude. Increasing the temperature of the gas leads to an increase in the modulation frequency providing the best fit to the thermal distribution, and weakens the resonant frequency dependence of the conversion. Mean-field effects can alter the optimal modulation frequency and lead to the excitation of higher modes. Our simulations predict that resonant association can be effective for binding energies of order $h \times 1$ MHz.
description: 8 pages latex, figures revised, references updated and typos corrected
Timing of stellar pulsations to search for sub-stellar companions beyond the main sequence
Creators: name: Mackebrandt, F.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: (abridged) Stars spend most of their life on the main sequence (MS). But their most substantial changes occur off the MS stage, either before on the pre-MS or beyond at the post-MS phase. Due to very complex and varied dynamical processes, the evolution of planetary systems orbiting non-MS stars significantly differs from those of MS planetary systems. This work focusses on the search for sub-stellar companions in post-MS systems146 and determination of the evolutionary state of their host stars, especially subdwarf B stars (sdB stars). The canonical model involves binary evolution to explain the existence of sdB stars. Formation scenarios for single sdBs are more controversially discussed. Besides the merger of two helium white dwarfs or other merger processes for apparently single sdB stars, an alternative formation channel involves planetary systems. During the red giant phase, the star would develop a common envelope w146ith a giant planet that leads to the loss of the envelope. Thus, sdB stars are laboratories to test how planets survive and influence the late phases of stellar evolution. The rapid pulsations of sdB stars can be used to detect sub-stellar companions from periodic variations in the expected arrival times of the pulsation maxima. This timing method is particularly sensitive to companions at large distances and complementary to other exoplanet detection methods. Thus, the timing method opens up a new parameter range in terms of the host stars and helps to understand the formation process of single sdBs. In this work I implemented, tested and applied the pulsation timing analysis to search for sub-stellar companions in late evolutionary stage stellar systems. The method is already established in the literature but not to an extent which is capable of automatically processing long-time series of high-cadence data, i.e., from space born observations.
description: PhD Thesis, 140 pages
Three-party simultaneous quantum secure direct communication scheme with EPR pairs
Creators: name: Wang, Mei-Yu
name: Yan, Feng-Li
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present a scheme for three-party simultaneous quantum secure direct communication by using EPR pairs. In the scheme, three legitimate parties can simultaneously exchange their secret messages. It is also proved to be secure against the intercept-and-resend attack, the disturbance attack and the entangled-and-measure attack.
description: 3 pages
Rayleigh-Plateau and Gregory-Laflamme instabilities of black strings
Creators: name: Cardoso, Vitor
name: Dias, Oscar J. C.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Many and very general arguments indicate that the event horizon behaves as a stretched membrane. We explore this analogy by associating the Gregory-Laflamme instability of black strings with a classical membrane instability known as Rayleigh-Plateau instability. We show that the key features of the black string instability can be reproduced using this viewpoint. In particular, we get good agreement for the threshold mode in all dimensions and exact agreement for large spacetime dimensionality. The instability timescale is also well described within this model, as well as the dimensionality dependence. We conjecture that general non-axisymmetric perturbations are stable. We further argue that the instability of ultra-spinning black holes follows from this model.
description: 4 pages, 2 Figures. RevTex4. v2: Added section discussing the existence of a critical dimension also in the fluid model. v3: Added discussion on breakup time, plot of instability corrected (now much more similar to G-L). Version to appear in Phys. Rev. Lett
ประสิทธิผลของโปรแกรมการส่งเสริมพฤติกรรมการใช้อุปกรณ์ป้องกันอันตรายส่วนบุคคลในพนักงานเก็บขนขยะมูลฝอย เทศบาลตำบลบางเมือง จังหวัดสมุทรปราการ
Creators: name: สุปรีดิ์ เดชา
Publisher: name: กองนวัตกรรมและวิจัย กรมควบคุมโรค
Year: 2561
Subjects: การส่งเสริมพฤติกรรม
อุปกรณ์ป้องกันอันตรายส่วนบุคคล
พนักงานเก็บขนขยะมูลฝอย
ปัญหาสุขภาพ

description: วารสารควบคุมโรค, 44, 1, 30-37
Maximal towers and ultrafilter bases in computability
Creators: name: Lempp, Steffen
name: Miller, Joseph S.
name: Nies, Andre
name: Soskova, Mariya
Publisher: name: arXiv
Year: 2021
Subjects: subject: Logic (math.LO)
subject: FOS: Mathematics

description: The tower number $\mathfrak t$ and the ultrafilter number $\mathfrak u$ are cardinal characteristics from set theory. They are based on combinatorial properties of classes of subsets of~$ω$ and the almost inclusion relation $\subseteq^*$ between such subsets. We consider analogs of these cardinal characteristics in computability theory.
 We show that the mass problem of ultrafilter bases is equivalent to the mass problem of computing a function that dominates all computable functions, and hence, by Martin's characterization, it captures highness. On the other hand, the mass problem for maximal towers is below the mass problem of computing a non-low set. We also show that some, but not all, noncomputable low sets compute maximal towers: Every noncomputable (low) c.e.\ set computes a maximal tower but no 1-generic $Δ^0_2$-set does so.
 We finally consider the mass problems of maximal almost disjoint, and of maximal independent families. We show that they are Medvedev equivalent to maximal towers, and to ultrafilter bases, respectively.
description: Submitted
The Possibility of Reconciling Quantum Mechanics with Classical Probability Theory
Creators: name: Slavnov, D. A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We describe a scheme for constructing quantum mechanics in which a quantum system is considered as a collection of open classical subsystems. This allows using the formal classical logic and classical probability theory in quantum mechanics. Our approach nevertheless allows completely reproducing the standard mathematical formalism of quantum mechanics and identifying its applicability limits. We especially attend to the quantum state reduction problem.
description: Latex, 14 pages, 1 figure
Element substitution effect in transition metal oxypnictide Re(O$_{1-x}$F$_x$)TAs (Re=rare earth, T=transition metal)
Creators: name: Chen, G. F.
name: Li, Z.
name: Wu, D.
name: Dong, J.
name: Li, G.
name: Hu, W. Z.
name: Zheng, P.
name: Luo, J. L.
name: Wang, N. L.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Different element substitution effects in transition metal oxypnictide Re(O$_{1-x}$F$_x$)TAs with Re=La, Ce, Nd, Eu, Gd, Tm, T=Fe, Ni, Ru, were studied. Similar to the La- or Ce-based systems, we found that the pure NdOFeAs shows a strong resistivity anomaly near 145 K, which was ascribed to the spin-density-wave instability. Electron doping by F increases T$_c$ to about 50 K. While in the case of Gd, the T$_c$ is reduced below 10 K. The tetragonal ZrCuSiAs-type structure could not be formed for Eu or Tm substitution in our preparing process. For Ni-based case, although both pure and F-doped LaONiAs are superconducting, no superconductivity was found when La was replaced by Ce in both cases, instead a ferromagnetic ordering transition was likely to form at low temperature in F-doped sample. We also synthesized LaO$_{1-x}$F$_x$RuAs and CeO$_{1-x}$F$_x$RuAs compounds. Metallic behavior was observed down to 4 K.
description: 4 pages, 6 figures
The electrophysiological masking level difference: effects of age and mediation of hearing and cognition
Creators: name: Dillard, Lauren K.
name: Cochran, Amy L.
name: Fowler, Cynthia G.
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Biochemistry
subject: Medicine
subject: Neuroscience
subject: Physiology
subject: FOS: Biological sciences
subject: Science Policy
subject: Mental Health

description: Evaluate the conceptual framework that age effects on the electrophysiological binaural masking level difference (MLD) are partially mediated by age-related hearing loss and/or global cognitive function via mediation analysis. Participants underwent a series of audiometric tests. The MLD was measured via cortical auditory evoked potentials using a speech stimulus (/ɑ/) in speech-weighted background noise. We used mediation analyses to determine the total effect, natural direct effects, and natural indirect effects, which are displayed as regression coefficients ([95% CI]; p value). Twenty-eight individuals aged 19–87 years (mean [SD]: 53.3 [25.2]), recruited from the community. Older age had a significant total effect on the MLD (-0.69 [95% CI: −0.96, −0.45]; p < 0.01). Neither pure tone average (-0.11 [95% CI: −0.43, 0.24; p = 0.54] nor global cognitive function (-0.02 [95% CI: −0.13, 0.02]; p = 0.55) mediated the relationship of age and the MLD and effect sizes were small. Results were insensitive to use of alternative hearing measures or inclusion of interaction terms. The electrophysiological MLD may be an age-sensitive measure of binaural temporal processing that is minimally affected by age-related hearing loss and global cognitive function.
Creatine binding in white muscle of the rainbow trout
Creators: name: Mossey, Mark Kenneth Philip.
Publisher: name: University of British Columbia
Year: 2009

description: The subcellular distribution of creatine (Cr) in white muscle of the rainbow trout (Oncorhynchus mykiss) was examined. Rainbow trout were cannulated via the dorsal injected with [amidino-14C] Cr. Following a 2 hour incubation period, fish were either sampled in the resting state (resting group) or exercised according to one of two different exercise protocols prior to sampling (buffering and depleting groups). The specific activity of phosphocreatine (SA[sub]PCr) was over three times the SA[sub]Cr within resting white muscle, and the SA[sub]PCr/SA[sub]Cr, ratio did not decrease towards 1 in muscle sampled from fish following either exercise protocol. This indicates; i) that a significant part of the pool of total Cr (the 'bound' pool) does not have access to creatine kinase (CK) in resting white muscle and ii) that this fraction of the Cr pool does not gain access to CK and become metabolically active during bouts of intense exercise. The SA[sub]PCr/SA[sub]Cr ratio increased significantly with decreasing Cr charge and thus the pool of Cr which was interacting with CK was not mixing homogeneously in all parts of the cell. This suggests limited subcellular mobility of PCr and Cr. The finding that a significant part of the pool of total Cr is not active in energy metabolism affects calculations of free adenosine diphosphate (ADP) through the CK equilibrium. Calculations of free ADP which take the limited access of Cr to CK into consideration imply a significant role for ADP as a regulator of metabolism.
“We forget about peoples’ hearing loss”: identifying key aspects of hearing aid and communication training in residential care homes
Creators: name: McShea, Lynzee
name: Ferguson, Melanie
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Biophysics
subject: Biochemistry
subject: Medicine
subject: Neuroscience
subject: Physiology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Science Policy
subject: Mental Health

description: The first objective was to assess the feasibility of training on hearing aids and communication strategies by support workers in residential care via a cascade training model using two different training packages. The second was to identify key elements of these packages to inform the design of a multimedia training package. Quantitative and qualitative methodologies were used. A pre-post feasibility design assessed the questionnaire data from residential care support workers to measure knowledge and confidence at three stages during the training. Semi-structured interviews explored the support workers’ experiences and adherence to cascading the training packages. Fourteen support workers employed by Sense (charity for deafblind people) were trained to become “Hearing Champions” and cascaded their learning to 117 support colleagues. Hearing Champions gained knowledge, skills and confidence, which were subsequently enhanced by sharing their learning with others. Despite individual and organisational barriers, they reported examples of improved practice and feelings of empowerment. It is feasible to deliver training to support workers in residential homes using the face-to-face “Hearing Champions” and multimedia C2Hear training methods by cascading training to their colleagues. Support workers expressed a preference for training that is portable, adaptable and interactive.
Mean Field Effects In The Quark-Gluon Plasma
Creators: name: Tan, Zhi Guang
name: Bonasera, A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: A transport model based on the mean free path approach for an interacting meson system at finite temperatures is discussed. A transition to a quark gluon plasma is included within the framework of the MIT bag model. The results obtained compare very well with Lattice QCD calculations when we include a mean field in the QGP phase due to the Debye color screening. In particular the cross over to the QGP at about 175 MeV temperature is nicely reproduced. We also discuss a possible scenario for hadronization which is especially important for temperatures below the QGP phase transition.
“I can see a path forward now”: a qualitative investigation of online groups for tinnitus in the time of Covid-19
Creators: name: Marks, Elizabeth
name: Handscomb, Lucy
name: Remskar, Masha
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Medicine
subject: Neuroscience
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Cancer
subject: Science Policy
subject: Mental Health

description: The Covid-19 pandemic led the British Tinnitus Association to offer more online support to people with tinnitus. The aim of this study was to understand how low-intensity group-based digital interventions could benefit people with tinnitus. Semi-structured interviews explored participants’ experiences and views on receiving support via an online group. Sixteen people with tinnitus who had attended a recent online tinnitus group and/or workshop were recruited using convenience sampling Three overarching themes were extrapolated from the data: feeling part of a community, being reliably informed, and living better with tinnitus. Participants reported significant benefits from both types of online group. There was appreciation for the accessibility of help during lockdown, and participants felt that this type of support would continue to be valuable post-pandemic. As seen in research on face-to-face groups, benefits came from a supportive community of people with tinnitus and knowledgeable, skilled and trustworthy facilitation and information provision. Outcomes focussed on feeling less isolated, more informed and hopeful. Online groups could offer an accessible ongoing resource supporting people on their journey with tinnitus.
GL(2,R) dualities in generalised Z(2) gauge theories and Ising models
Creators: name: Yokomizo, N.
name: Teotonio-Sobrinho, P.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study a class of duality transformations in generalised Z(2) gauge theories and Ising models on two- and three-dimensional compact lattices. The theories are interpreted algebraically in terms of the structure constants of a bidimensional vector space H with algebra and coalgebra structures, and it is shown that for any change of basis in H there is a related symmetry between such models. The classical Kramers and Wannier dualities are described as special cases of these transformations. We derive explicit expressions for the relation between partition functions on general finite triangulations for these cases, extending results known for square and cubic lattices in the thermodynamical limit. A class of symmetry transformations in which the gauge coupling changes continuously is also studied in two dimensions.
description: 29 pages, 4 figures
Dynamical number of base-points of non base-wandering Jonquières twists
Creators: name: Déserti, Julie
Publisher: name: arXiv
Year: 2021
Subjects: subject: Dynamical Systems (math.DS)
subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14E07, 32H50

description: We give some properties of the dynamical number of base-points of birational self-maps of the complex projective plane. In particular we give a formula to determine the dynamical number of base-points of non base-wandering Jonquières twists.
Deciphering the structural evolution of orogens through numerical modelling
Creators: name: KNIGHT, BEN STEVEN
Publisher: name: Monash University
Year: 2021
Subjects: subject: Geology
subject: FOS: Earth and related environmental sciences
subject: 40402 Geodynamics

description: This study investigates the role of convergence velocity, surface processes and internal heating individually to understand the influence of each on the structures found in mountains. The findings presented in this thesis show each process can dramatically alter the internal structure when dominant, with each process producing a unique structure.
Quantum Field Theory in a Non-Commutative Space: Theoretical Predictions and Numerical Results on the Fuzzy Sphere
Creators: name: Panero, Marco
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Lattice (hep-lat)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We review some recent progress in quantum field theory in non-commutative space, focusing onto the fuzzy sphere as a non-perturbative regularisation scheme. We first introduce the basic formalism, and discuss the limits corresponding to different commutative or non-commutative spaces. We present some of the theories which have been investigated in this framework, with a particular attention to the scalar model. Then we comment on the results recently obtained from Monte Carlo simulations, and show a preview of new numerical data, which are consistent with the expected transition between two phases characterised by the topology of the support of a matrix eigenvalue distribution.
description: This is a contribution to the Proc. of the O'Raifeartaigh Symposium on Non-Perturbative and Symmetry Methods in Field Theory (June 2006, Budapest, Hungary), published in SIGMA (Symmetry, Integrability and Geometry: Methods and Applications) at http://www.emis.de/journals/SIGMA/
Associations between medical conditions and auditory dysfunction in US Veterans
Creators: name: Grush, Leslie D.
name: Reavis, Kelly M.
name: Griest, Susan E.
name: Thapa, Samrita
name: Helt, Wendy J.
name: Henry, James A.
name: Theodoroff, Sarah M.
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Neuroscience
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Science Policy
subject: Mental Health

description: To examine associations between non-otologic medical conditions and auditory dysfunction. Cross-sectional analysis of baseline data from the Noise Outcomes in Service members Epidemiology (NOISE) study. Logistic regression was used to estimate the association between medical conditions (0, 1, and 2 or more conditions) and auditory dysfunction (hearing loss pure tone average ≥20 dB HL and tinnitus), adjusting for key confounders including noise exposure. Secondarily, the association between specific medical conditions and auditory dysfunction was examined. All variables were self-reported. United States military Veterans (n = 580) with mean age 34.1 years (standard deviation = 9.2), who were within approximately 2.5 years of separation from service. Compared to Veterans reporting no medical conditions, Veterans reporting two or more had increased odds on low-frequency hearing loss and on tinnitus but not on high or extended-high frequency hearing loss. Furthermore, specific conditions sleep disorder and arthritis were associated with auditory dysfunction. Non-otologic medical conditions were associated with low-frequency hearing loss and tinnitus in this sample of young Veterans. This suggests medical conditions may play a role in Veterans’ hearing health. Whether management of medical conditions earlier in life reduces the risk of hearing loss and tinnitus requires further study.
The Clusters Hiding in Plain Sight (CHiPS) survey: Complete sample of extreme BCG clusters
Creators: name: Somboonpanyakul, Taweewat
name: McDonald, Michael
name: Gaspari, Massimo
name: Stalder, Brian
name: Stark, Antony A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present optical follow-up observations for candidate clusters in the Clusters Hiding in Plain Sight (CHiPS) survey, which is designed to find new galaxy clusters with extreme central galaxies that were misidentified as bright isolated sources in the ROSAT All-Sky Survey catalog. We identify 11 cluster candidates around X-ray, radio, and mid-IR bright sources, including six well-known clusters, two false associations of foreground and background clusters, and three new candidates which are observed further with Chandra. Of the three new candidates, we confirm two newly discovered galaxy clusters: CHIPS1356-3421 and CHIPS1911+4455. Both clusters are luminous enough to be detected in the ROSAT All Sky-Survey data if not because of their bright central cores. CHIPS1911+4455 is similar in many ways to the Phoenix cluster, but with a highly-disturbed X-ray morphology on large scales. We find the occurrence rate for clusters that would appear to be X-ray bright point sources in the ROSAT All-Sky Survey (and any surveys with similar angular resolution) to be 2+/-1%, and the occurrence rate of clusters with runaway cooling in their cores to be <1%, consistent with predictions of Chaotic Cold Accretion. With the number of new groups and clusters predicted to be found with eROSITA, the population of clusters that appear to be point sources (due to a central QSO or a dense cool core) could be around 2000. Finally, this survey demonstrates that the Phoenix cluster is likely the strongest cool core at z<0.7 -- anything more extreme would have been found in this survey.
description: 18 pages, 16 figure. Submitted for publication in ApJ
Learning dynamical systems from data: A simple cross-validation perspective, part III: Irregularly-Sampled Time Series
Creators: name: Lee, Jonghyeon
name: De Brouwer, Edward
name: Hamzi, Boumediene
name: Owhadi, Houman
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (stat.ML)
subject: Machine Learning (cs.LG)
subject: Dynamical Systems (math.DS)
subject: Computation (stat.CO)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: A simple and interpretable way to learn a dynamical system from data is to interpolate its vector-field with a kernel. In particular, this strategy is highly efficient (both in terms of accuracy and complexity) when the kernel is data-adapted using Kernel Flows (KF)\cite{Owhadi19} (which uses gradient-based optimization to learn a kernel based on the premise that a kernel is good if there is no significant loss in accuracy if half of the data is used for interpolation). Despite its previous successes, this strategy (based on interpolating the vector field driving the dynamical system) breaks down when the observed time series is not regularly sampled in time. In this work, we propose to address this problem by directly approximating the vector field of the dynamical system by incorporating time differences between observations in the (KF) data-adapted kernels. We compare our approach with the classical one over different benchmark dynamical systems and show that it significantly improves the forecasting accuracy while remaining simple, fast, and robust.
description: Kernel Methods, Kernel Flows, Irregularly-Sampled Time Series
Tunable electron-phonon interactions in long-period superlattices
Creators: name: Ishizuka, Hiroaki
name: Fahimniya, Ali
name: Guinea, Francisco
name: Levitov, Leonid
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The efficiency of optical emitters can be dramatically enhanced by reducing the effective mode volume (the Purcell effect). Here we predict an analogous enhancement for electron-phonon (el-ph) scattering, achieved by compressing the electronic Wannier orbitals. Reshaping of Wannier orbitals is a prominent effect in graphene moiré superlattices (SLs) where the orbitals are tunable by the twist angle. A reduction of the orbital effective volume leads to an enhancement in the effective el-ph coupling strength, yielding the values considerably bigger than those known for pristine monolayer graphene. The enhanced coupling boosts the el-ph scattering rates, pushing them above the values predicted from the enhanced spectral density of electronic excitations. The enhanced phonon emission and scattering rates are manifest in the observables such as electron-lattice cooling and the linear-$T$ resistivity, both of which are directly tunable by the moiré twist angle.
description: 7 pages, 4 figures
Fock space methods and large N
Creators: name: Bonini, M.
name: Cicuta, G. M.
name: Onofri, E.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Ideas and techniques (asymptotic decoupling of single-trace subspace, asymptotic operator algebras, duality and role of supersymmetry) relevant in current Fock space investigations of quantum field theories have very simple roles in a class of toy models.
description: 7 pages including 2 eps figures
The Clusters Hiding in Plain Sight (CHiPS) survey: CHIPS1911+4455, a Rapidly-Cooling Core in a Merging Cluster
Creators: name: Somboonpanyakul, Taweewat
name: McDonald, Michael
name: Bayliss, Matthew
name: Voit, Mark
name: Donahue, Megan
name: Gaspari, Massimo
name: Dahle, Håkon
name: Rivera-Thorsen, Emil
name: Stark, Antony
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present high-resolution optical images from the Hubble Space Telescope, X-ray images from the Chandra X-ray Observatory, and optical spectra from the Nordic Optical Telescope for a newly-discovered galaxy cluster, CHIPS1911+4455, at z=0.485+/-0.005. CHIPS1911+4455 was discovered in the Clusters Hiding in Plain Sight (CHiPS) survey, which sought to discover galaxy clusters with extreme central galaxies that were misidentified as isolated X-ray point sources in the ROSAT All-Sky Survey. With new Chandra X-ray observations, we find the core (r=10 kpc) entropy to be 17+2-9 keV cm^2, suggesting a strong cool core, which are typically found at the centers of relaxed clusters. However, the large-scale morphology of CHIPS1911+4455 is highly asymmetric, pointing to a more dynamically active and turbulent cluster. Furthermore, the Hubble images reveal a massive, filamentary starburst near the brightest cluster galaxy (BCG). We measure the star formation rate for the BCG to be 140--190 Msun/yr, which is one of the highest rates measured in a central cluster galaxy to date. One possible scenario for CHIPS1911+4455 is that the cool core was displaced during a major merger and rapidly cooled, with cool, star-forming gas raining back toward the core. This unique system is an excellent case study for high-redshift clusters, where such phenomena are proving to be more common. Further studies of such systems will drastically improve our understanding of the relation between cluster mergers and cooling, and how these fit in the bigger picture of active galactic nuclei (AGN) feedback.
description: 6 pages, 5 figure. Accepted for publication in ApJL
Combined Dissipative and Hamiltonian Confinement of Cat Qubits
Creators: name: Gautier, Ronan
name: Sarlette, Alain
name: Mirrahimi, Mazyar
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum error correction with biased-noise qubits can drastically reduce the hardware overhead for universal and fault-tolerant quantum computation. Cat qubits are a promising realization of biased-noise qubits as they feature an exponential error bias inherited from their non-local encoding in the phase space of a quantum harmonic oscillator. To confine the state of an oscillator to the cat qubit manifold, two main approaches have been considered so far: a Kerr-based Hamiltonian confinement with high gate performances, and a dissipative confinement with robust protection against a broad range of noise mechanisms. We introduce a new combined dissipative and Hamiltonian confinement scheme based on two-photon dissipation together with a Two-Photon Exchange (TPE) Hamiltonian. The TPE Hamiltonian is similar to Kerr nonlinearity, but unlike the Kerr it only induces a bounded distinction between even- and odd-photon eigenstates, a highly beneficial feature for protecting the cat qubits with dissipative mechanisms. Using this combined confinement scheme, we demonstrate fast and bias-preserving gates with drastically improved performance compared to dissipative or Hamiltonian schemes. In addition, this combined scheme can be implemented experimentally with only minor modifications of existing dissipative cat qubit experiments.
description: 24 pages, 18 figures
The Evolution of Zero Trust Architecture (ZTA) from Concept to Implementation
Creators: name: Nasiruzzaman, Md
name: Ali, Maaruf
name: Salam, Iftekhar
name: Miraz, Mahdi H.
Publisher: name: arXiv
Year: 2025
Subjects: subject: Cryptography and Security (cs.CR)
subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: Zero Trust Architecture (ZTA) is one of the paradigm changes in cybersecurity, from the traditional perimeter-based model to perimeterless. This article studies the core concepts of ZTA, its beginning, a few use cases and future trends. Emphasising the always verify and least privilege access, some key tenets of ZTA have grown to be integration technologies like Identity Management, Multi-Factor Authentication (MFA) and real-time analytics. ZTA is expected to strengthen cloud environments, education, work environments (including from home) while controlling other risks like lateral movement and insider threats. Despite ZTA's benefits, it comes with challenges in the form of complexity, performance overhead and vulnerabilities in the control plane. These require phased implementation and continuous refinement to keep up with evolving organisational needs and threat landscapes. Emerging technologies, such as Artificial Intelligence (AI) and Machine Learning (ML) will further automate policy enforcement and threat detection in keeping up with dynamic cyber threats.
Review on the effects of noise and impaired voice (Schiller et al., 2021)
Creators: name: Schiller, Isabel S.
name: Remacle, Angélique
name: Durieux, Nancy
name: Morsomme, Dominique
Publisher: name: ASHA journals
Year: 2021
Subjects: subject: 170204 Linguistic Processes (incl. Speech Production and Comprehension)
subject: FOS: Psychology
subject: 200404 Laboratory Phonetics and Speech Science
subject: FOS: Languages and literature

description: Purpose: Background noise and voice problems among teachers can degrade listening conditions in classrooms. The aim of this literature review is to understand how these acoustic degradations affect spoken language processing in 6- to 18-year-old children.Method: In a narrative report and meta-analysis, we systematically review studies that examined the effects of noise and/or impaired voice on children’s response accuracy and response time (RT) in listening tasks. We propose the Speech Processing under Acoustic DEgradations (SPADE) framework to classify relevant findings according to three processing dimensions—speech perception, listening comprehension, and auditory working memory—and highlight potential moderators.Results: Thirty-one studies are included in this systematic review. Our meta-analysis shows that noise can impede children’s accuracy in listening tasks across all processing dimensions (Cohen’s d between −0.67 and −2.65, depending on signal-to-noise ratio) and that impaired voice lowers children’s accuracy in listening comprehension tasks (d = −0.35). A handful of studies assessed RT, but results are inconclusive. The impact of noise and impaired voice can be moderated by listener, task, environmental, and exposure factors. The interaction between noise and impaired voice remains underinvestigated.Conclusions: Overall, this review suggests that children have more trouble perceiving speech, processing verbal messages, and recalling verbal information when listening to speech in noise or to a speaker with dysphonia. Impoverished speech input could impede pupils’ motivation and academic performance at school.
Supplemental Material S1. Description of typical listening tasks used to assess spoken language processing in children and classification into SPADE dimensions.
Schiller, I. S., Remacle, A., Durieux, N., & Morsomme, D. (2021). Effects of noise and a speaker’s impaired voice quality on spoken language processing in school-aged children: A systematic review and meta-analysis. Journal of Speech, Language, and Hearing Research. Advance online publication. https://doi.org/10.1044/2021_JSLHR-21-00183
The Three Hundred Project: The gas disruption of infalling objects in cluster environments
Creators: name: Mostoghiu, Robert
name: Arthur, Jake
name: Pearce, Frazer R.
name: Gray, Meghan
name: Knebe, Alexander
name: Cui, Weiguang
name: Welker, Charlotte
name: Cora, Sofía A.
name: Murante, Giuseppe
name: Dolag, Klaus
name: Yepes, Gustavo
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We analyse the gas content evolution of infalling haloes in cluster environments from THE THREE HUNDRED project, a collection of 324 numerically modelled galaxy clusters. The haloes in our sample were selected within $5R_{200}$ of the main cluster halo at $z=0$ and have total halo mass $M_{200}\geq10^{11} h^{-1} M_{\odot}$. We track their main progenitors and study their gas evolution since their crossing into the infall region, which we define as $1-4R_{200}$. Studying the radial trends of our populations using both the full phase space information and a line-of-sight projection, we confirm the Arthur et al. (2019) result and identify a characteristic radius around $1.7R_{200}$ in 3D and at $R_{200}$ in projection at which infalling haloes lose nearly all of the gas prior their infall. Splitting the trends by subhalo status we show that subhaloes residing in group-mass and low-mass host haloes in the infall region follow similar radial gas-loss trends as their hosts, whereas subhaloes of cluster-mass host haloes are stripped of their gas much further out. Our results show that infalling objects suffer significant gaseous disruption that correlates with time-since-infall, cluster-centric distance and host mass, and that the gaseous disruption they experience is a combination of subhalo pre-processing and object gas depletion at a radius which behaves like an accretion shock.
description: accepted for publication in MNRAS; 13 pages, 10 figures
Analysis of multistory frames by the Kani's method of moment distribution, as programmed for the digital computer to perform elastic-plastic frame analysis
Creators: name: Deputy, Leven Thomas
Publisher: name: The University of Texas at Austin
Year: 1977
Subjects: subject: Statically indeterminate structures
subject: Structural frames
subject: Structural analysis (Engineering)
subject: Data processing
subject: Multistory frames
subject: Kani's method
subject: Statically indeterminate structures
subject: Structural frames
subject: Structural analysis (Engineering)--Data processing

description: This thesis describes the use of the multistory frame analysis technique devised by Gaspar Kani. A computer program using the Kani method was written which includes P - Δ effects on sidesway and an elastic-plastic behavior analysis is performed. Only initial input is required from the programmer for elastic-plastic analysis. The computer program incrementally will add load until hinging occurs and a limited number of hinges is specified by the programmer
Amenable groups that act on the line
Creators: name: Morris, Dave Witte
Publisher: name: arXiv
Year: 2006
Subjects: subject: Group Theory (math.GR)
subject: Dynamical Systems (math.DS)
subject: Geometric Topology (math.GT)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 20F60, 06F15, 37C85, 37E05, 37E10, 43A07, 57S25

description: Let Gamma be a finitely generated, amenable group. Using an idea of E Ghys, we prove that if Gamma has a nontrivial, orientation-preserving action on the real line, then Gamma has an infinite, cyclic quotient. (The converse is obvious.) This implies that if Gamma has a faithful action on the circle, then some finite-index subgroup of Gamma has the property that all of its nontrivial, finitely generated subgroups have infinite, cyclic quotients. It also means that every left-orderable, amenable group is locally indicable. This answers a question of P Linnell.
description: This is the version published by Algebraic & Geometric Topology on 15 December 2006
Environmental impacts and economic costs : A study of pulp mill effluent in British Columbia
Creators: name: Lempriere, Tony Christopher
Publisher: name: University of British Columbia
Year: 2009

description: In this thesis I study the economic cost of the environmental impacts of pulp and paper mill effluent in British Columbia. The thesis is not a benefit-cost analysis of the industry. Rather, my primary objective is to assess what the process of trying to estimate the costs reveals about the difficulties and limitations in the economic analysis of environmental damages. I review the environmental impacts of pulp mill effluent in British Columbia. There is a great deal of uncertainty in many respects about these impacts, but it is clear that in some cases they have been significant. A considerable body of literature addresses the theory and methodology of how to measure such impacts in economic terms. I draw upon this literature in four case studies of certain environmental impacts and specific types of economic damage. The case studies examine 1) dissolved oxygen reductions in Alberni Inlet and the impact on sport salmon fishing; 2) chlorinated dioxin contamination in Howe Sound and commercial shellfishing ground closures; 3) chlorinated dioxin contamination in the Columbia River and the impact on sport fishing; and 4) fish tainting at Kitimat and its effect on the Haisla people. In each case study, I estimate a range of values for the economic cost of the specific environmental impact in question. In each, there are significant and difficult questions which must be addressed. I conclude by noting that there are many instances where credible economic value estimates of environmental damages can be derived. Even partial and incomplete estimates can be helpful in demonstrating that the environment is an important source of economic value. However, the case studies suggest that five potentially severe sets of problems will invariably accompany economic analysis of environmental impacts. The first four -- complexity, uncertainty, site-specificity and limited information — are typical of most studies of environmental issues, but economic analysis adds a new dimension to each. The fifth set of problems is unique to economic analysis. These difficulties limit the ability of economists to undertake comprehensive analyses of the environment or environmental degradation.