cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Essays in time series econometrics
Creators: name: Reichold, Karsten
Publisher: name: TU Dortmund
Year: 2023
Subjects: subject: Bootstrap
subject: Cointegration
subject: Estimation
subject: Inference
subject: 310
subject: Regressionsanalyse
subject: Kointegration
subject: Bootstrap-Statistik

description: This cumulative dissertation consists of three self-contained papers all contributing to the cointegrating regression literature. The first chapter is devoted to classical linear cointegrating regressions, i.e., regressions that contain integrated processes as regressors. It combines traditional and self-normalized Wald-type test statistics with a vector autoregressive sieve bootstrap to reduce size distortions of hypothesis tests on the cointegrating vector. The second chapter focuses on panels of cointegrating polynomial regressions, i.e., panels of regressions that include an integrated process and its powers as regressors. It derives the asymptotic properties of a group-mean fully modified OLS estimator and hypothesis tests based upon it in a fixed cross-section and large time series dimension. The third chapter is devoted to testing for a cointegrating relationship between a fixed number of integrated processes. In particular, it derives asymptotic theory for an existing nonparametric variance ratio unit root test (originally proposed to test for an unit root in an observed univariate time series) when applied to regression residuals.
Hipposideros jonesi Hayman 1947
Creators: name: Koopman, Karl F.
Publisher: name: Zenodo
Year: 1993
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Chiroptera
Hipposideridae
Hipposideros
Hipposideros jonesi

description: Hipposideros jonesi Hayman, 1947. Ann. Mag. Nat. Hist., ser. 11, 14:71. TYPE LOCALITY: Sierra Leone, Makeni. DISTRIBUTION: Sierra Leone and Guinea to Mali, Burkina Faso and Nigeria.
description: Published as part of Karl F. Koopman, 1993, Order Chiroptera, pp. 137-241 in Mammal Species of the World (2 nd Edition), Washington and London :Smithsonian Institution Press on page 173, DOI: 10.5281/zenodo.7353060
Hipposideros lamottei Brosset 1984
Creators: name: Koopman, Karl F.
Publisher: name: Zenodo
Year: 1993
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Chiroptera
Hipposideridae
Hipposideros
Hipposideros lamottei

description: Hipposideros lamottei Brosset, 1984. Mammalia, 48:548. TYPE LOCALITY: Guinea, Mt. Nimba, Pierre Richaud. DISTRIBUTION: Mt. Nimba on Guinea-Liberia border, but probably more widespread. COMMENTS: Distinction from H. ruber is not entirely clear.
description: Published as part of Karl F. Koopman, 1993, Order Chiroptera, pp. 137-241 in Mammal Species of the World (2 nd Edition), Washington and London :Smithsonian Institution Press on page 173, DOI: 10.5281/zenodo.7353060
Likely detection of gamma-ray pulsations of PSR~J1717+4308A in NGC~6341 and implication of the gamma-ray millisecond pulsars in globular clusters
Creators: name: Zhang, P.
name: Xing, Y.
name: Wang, Z.
name: Wu, W.
name: Chen, Z.
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We report our analysis results for the globular cluster (GC) NGC~6341 (M92), as a millisecond pulsar (MSP) J1717$+$4308A has recently been reported found in this GC. The data used are from the Large Area Telescope onboard the {\it Fermi Gamma-ray Space Telescope (Fermi)}. We detect $γ$-ray pulsations of the MSP at a $4.4σ$ confidence level (the corresponding weighted H-test value is $\sim$28.4). This MSP, the fourth $γ$-ray pulsar found in a GC, does not have significant off-pulse emission and has $γ$-ray luminosity and efficiency $1.3\times10^{34}$\,erg\,s$^{-1}$ and 1.7\% respectively. In order to have a clear view on the properties of the known GC $γ$-ray MSPs, we re-analyze the \fermi\ LAT data for the other three ones. These four MSPs share the properties of either having high $\dot{E}$ ($\sim 10^{36}$\,erg\,s$^{-1}$) or being in the GCs that contain only limited numbers of known MSPs. In addition, we find that PSRs~J1823$-$3021A and B1821$-$24, in NGC~6624 and NGC~6626 respectively, have detectable off-pulse $γ$-ray emission and PSR J1835$-$3259B in NGC~6652 does not. Using the obtained off-pulse spectra or spectral upper limits, we constrain the numbers of other MSPs in the four GCs. The results are consistent with the numbers of the radio pulsars reported in them. While at least in NGC~6624 and NGC~6626, the contribution of other MSPs to their observed $γ$-ray emission can not be ignored, our study indicates that the presence of a bright MSP could be the dominant factor for whether a GC is detectable at $γ$-rays or not.
description: 13 pages, 10 figures, 5 tables, appearing in ApJ; minor typos corrected
Hydrogen Passivation for Highly Defected Commercial Grade n-Type CZ Wafers and Oxygen Precipitates
Creators: name: Hallam, B.
name: Wang, S.
name: Ciesla, A.
name: Hamer, P.
name: Chan, C.
name: Abbott, M.
name: Wenham, S.R.
Publisher: name: WIP
Year: 2014
Subjects: WAFER-BASED SILICON SOLAR CELLS AND MATERIALS TECHNOLOGY
Silicon Solar Cell Improvements

description: 29th European Photovoltaic Solar Energy Conference and Exhibition; 608-611
description: High efficiency commercial silicon solar cell technologies are often fabricated on n-type wafers to
avoid light induced degradation and other recombination centres that are observed in boron-doped Czochralski
silicon. The advanced cell structures often feature the p-n junction on the rear device and require high bulk lifetimes
in order to achieve high efficiencies. However n-type Czochralski silicon is still subject to a range of impurity related
defects, which can substantially reduce the lifetime of such material. In this work, large improvements in bulk
lifetimes were demonstrated on standard commercial grade n-type Czochralski silicon from values in the range of 90-
190 μs to values of 3.4-4.9 ms through the use of a short, low temperature hydrogen passivation process only using
atomic hydrogen released from layers of silicon oxynitride grown by plasma enhanced chemical vapour deposition.
The large improvements suggest that wafers with inherent low lifetimes, often deemed unsuitable to achieve high
efficiencies, could in fact be compatible with use of the advanced cell architectures, to realise cell efficiencies over 24
%. Oxygen precipitates are one type of impurity related defect which can cause substantial lifetime and efficiency
limitations in both n- and p-type Czochralski silicon solar cells. An advanced hydrogenation process incorporating
minority carrier injection was observed to lead to the complete electrical deactivation of the recombination activity of
the defects. Furthermore, the passivation was retained throughout the remainder of the fabrication sequence and
hence, not evident on finished devices.
An HST Proper-Motion Study of the Large-scale Jet of 3C273
Creators: name: Meyer, Eileen T.
name: Sparks, William B.
name: Georganopoulos, Markos
name: Anderson, Jay
name: van der Marel, Roeland
name: Biretta, John
name: Sohn, Sangmo Tony
name: Chiaberge, Marco
name: Perlman, Eric
name: Norman, Colin
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The radio galaxy 3C 273 hosts one of the nearest and best-studied powerful quasar jets. Having been imaged repeatedly by the Hubble Space Telescope (HST) over the past twenty years, it was chosen for an HST program to measure proper motions in the kiloparsec-scale resolved jets of nearby radio-loud active galaxies. The jet in 3C 273 is highly relativistic on sub-parsec scales, with apparent proper motions up to 15$c$ observed by VLBI (Lister et al., 2013). In contrast, we find that the kpc-scale knots are compatible with being stationary, with a mean speed of $-$0.2$\pm$0.5$c$ over the whole jet. Assuming the knots are packets of moving plasma, an upper limit of 1c implies a bulk Lorentz factor $Γ
description: 13 pages, 8 figures, 1 appendix. Accepted for publication in the Astrophysical Journal
Spin $ 2 $ spectrum for marginal deformations of 4d $ \mathcal{N}=2 $ SCFTs
Creators: name: Roychowdhury, Sourav
name: Roychowdhury, Dibakar
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We compute spin $ 2 $ spectrum associated with massive graviton fluctuations in $γ$-deformed Gaiotto-Maldacena background those are holographically dual to marginal deformations of $\mathcal{N}=2$ SCFTs in four dimensions. Under the special circumstances, we analytically estimate the spectra both for the $ γ$- deformed Abelian T dual (ATD) as well as the non-Abelian T dual (NATD) cases where we retain ourselves upto leading order in the deformation parameter. Our analysis reveals a continuous spectra which is associated with the breaking of the $ U(1) $ isometry (along the directions of the internal manifold) in the presence of the $ γ$- deformation. We also comment on the effects of adding flavour branes into the picture and the nature of the associated spin $ 2 $ operators in the dual $ \mathcal{N}=1 $ SCFTs.
description: 1+19 pages ; v2 ; Accepted to JHEP
n-Type Mono Crystalline Ingot Characterization for Silicon Heterojunction Technology in Roth&Rau’s Pilot Line
Creators: name: Zhao, J.
name: Waltinger, A.
name: Leonhardt, M.
name: Burkhardt, S.
name: Krause, J.
Publisher: name: WIP
Year: 2014
Subjects: WAFER-BASED SILICON SOLAR CELLS AND MATERIALS TECHNOLOGY
Silicon Feedstock, Crystallisation and Wafering

description: 29th European Photovoltaic Solar Energy Conference and Exhibition; 573-578
description: Recently the PV market is starting to be recovered, how to reach high efficiency solar cells with low cost is attracted more and more attention for all solar cell manufacturers. The hydrogenated amorphous (a-Si:H) /crystalline silicon (c-Si) hetero-junction (SHJ) technology provides a simple application to achieve above 21% and even higher efficiency with process temperature below 200°C. The whole process flow (Fig.1) is simpler than the standard solar cell manufacture. Its low temperature coefficient (-0.2 %/K) provides additional benefit in yield of output power for PV systems. The recent world record SHJ cell by the company Panasonic Corporation with 24.7% high efficiency on a 4 inch n-type solar cell has shown more potential for future mass production. However, the n-type wafer material quality plays an big roll to reach such high efficiency cells. This study presents a method to characterize an n-type mono crystalline ingot systematically for SHJ technology. The behavior of SHJ cell performance across the whole ingot and all the dependences between the parameters were investigated.
[OIII] 5007A Emission Line Width as a Surrogate for stellar dispersion in Type 1 AGNs?
Creators: name: Le, Huynh Anh N.
name: Xue, Yongquan
name: Lin, Xiaozhi
name: Wang, Yijun
Publisher: name: arXiv
Year: 2023
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present a study of the relation between the [OIII] 5007A emission line width (sigma_{[OIII]}) and stellar velocity dispersion (sigma_{*}), utilizing a sample of 740 type 1 active galactic nuclei (AGNs) with high-quality spectra at redshift z < 1.0. We find the broad correlation between the core component of [OIII] emission line width (sigma_{[OIII,core]}) and sigma_{*} with a scatter of 0.11~dex for the low redshift (z < 0.1) sample; for redshift (0.3 < z < 1.0) AGNs, the scatter is larger, being 0.16~dex. We also find that the Eddington ratio (L_{bol}/L_{Edd}) may play an important role in the discrepancies between sigma_{[OIII,core]} and sigma_{*}. As the L_{bol}/L_{Edd} increases, sigma_{[OIII,core]} tends to be larger than sigma_{*}. By classifying our local sample with different minor-to-major axis ratios, we find that sigma_{*} is larger than sigma_{[OIII,core]} for those edge-on spiral galaxies. In addition, we also find that the effects of outflow strength properties such as maximum outflow velocity (V_{max}) and the broader component of [OIII] emission line width and line shift (sigma_{[OIII,out]} and V_{[OIII,out]}) may play a major role in the discrepancies between sigma_{[OIII,core]} and sigma_{*}. The discrepancies between sigma_{[OIII,core]} and sigma_{*} are larger when V_{max}, V_{[OIII,out]}, and sigma_{[OIII,out]} increase. Our results show that the outflow strengths may have significant effects on the differences between narrow-line region gas and stellar kinematics in AGNs. We suggest that caution should be taken when using sigma_{[OIII,core]} as a surrogate for sigma_{*}. In addition, the substitute of sigma_{[OIII,core]} for sigma_{*} could be used only for low luminosity AGNs.
description: 17 pages, Accepted for publication in ApJ
Surveillance of Australian workplace-based respiratory events (the SABRE project)
Creators: name: Elder, David S. .
Publisher: name: Monash University
Year: 2022

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Hipposideros lankadiva Kelaart 1850
Creators: name: Koopman, Karl F.
Publisher: name: Zenodo
Year: 1993
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Chiroptera
Hipposideridae
Hipposideros
Hipposideros lankadiva

description: Hipposideros lankadiva Kelaart, 1850. J. Sri Lanka Branch Asiat. Soc., 2(2):216. TYPE LOCALITY: Sri Lanka, Kandy. DISTRIBUTION: Sri Lanka, S and C India. SYNONYMS: indus, mixtus, unitus.
description: Published as part of Karl F. Koopman, 1993, Order Chiroptera, pp. 137-241 in Mammal Species of the World (2 nd Edition), Washington and London :Smithsonian Institution Press on page 173, DOI: 10.5281/zenodo.7353060
Precision Islands in the Ising and $O(N)$ Models
Creators: name: Kos, Filip
name: Poland, David
name: Simmons-Duffin, David
name: Vichi, Alessandro
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We make precise determinations of the leading scaling dimensions and operator product expansion (OPE) coefficients in the 3d Ising, $O(2)$, and $O(3)$ models from the conformal bootstrap with mixed correlators. We improve on previous studies by scanning over possible relative values of the leading OPE coefficients, which incorporates the physical information that there is only a single operator at a given scaling dimension. The scaling dimensions and OPE coefficients obtained for the 3d Ising model, $(Δ_σ, Δ_ε,λ_{σσε}, λ_{εεε}) = (0.5181489(10), 1.412625(10), 1.0518537(41), 1.532435(19))$, give the most precise determinations of these quantities to date.
description: 17 pages, 7 figures, and one movie: https://youtu.be/6pw8Hkly1yo
Increasing Cutting Efficiency of Slurry Based Sawing Process by Use of Structured Wire
Creators: name: Weber, B.
name: Riepe, S.
name: Möller, H.J.
Publisher: name: WIP
Year: 2014
Subjects: WAFER-BASED SILICON SOLAR CELLS AND MATERIALS TECHNOLOGY
Silicon Feedstock, Crystallisation and Wafering

description: 29th European Photovoltaic Solar Energy Conference and Exhibition; 583-587
description: Further cost reduction for the multi wire sawing of silicon wafers for PV can only be achieved by
significant technology improvements. One feasible approach is the usage of structured wire with slurry including
loose abrasives. The purpose of this work is to investigate the increase of cutting efficiency and slurry transport by
use of structured wires. The results show that the wire structure has a high impact on the process forces and on the
feed rates. Up to 60% higher feed rates could be achieved by structured wire in comparison to straight wire.
Additionally, the wafer geometry after wire sawing was found to be more homogeneous which is especially important
for thin wafers.
Single photon transfer controlled by excitation phase in a two-atom cavity system
Creators: name: Zhou, Chun Xiao
name: Zhang, Rui
name: Di Guo, Miao
name: Moiseev, S. A.
name: Su, Xue Mei
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate the quantum interference effects of single photon transfer in two-atom cavity system caused by external excitation phase. In the proposed system, two identical atoms (with different positions in the optical cavity) are firstly prepared into a timed state by an external single photon field. During the excitation, the atoms grasp different phases which depend on the spatial positions of the atoms in the cavity. Due to strong resonant interaction between two atoms and optical cavity mode the absorbed input photon can be efficiently transferred from the atoms to the resonant cavity mode. We show that the quantum transfer is highly sensitive to the external excitation phases of atoms and it leads to quantum interference effects on the cavity mode excitation. Besides, the quantum transfer is also influenced by the dipole-dipole interaction dependent to the atomic distance. In this system the atomic positions also determine the coupling constants between atoms and cavity mode which causes additional interference effects to the photon exchange between atoms and cavity. Based on the characteristics of excitation phase we find that it is a feasible scheme to generate long-lived dark state and it could be useful for storage and manipulation of single photon fields by controlling the excitation phase.
description: 9 pages, 7 figures, 44 references
Continuation methods for lab experiments of nonlinear vibrations
Creators: name: Tatzko, Sebastian
name: Kleyman, Gleb
name: Wallaschek, Jörg
Publisher: name: Weinheim : Wiley-VCH
Year: 2023
Subjects: subject: control-based continuation
subject: feedback control
subject: force harmonization
subject: nonlinear vibrations
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik
subject: Dewey Decimal Classification::500 | Naturwissenschaften::510 | Mathematik

description: In this work, we will give an overview of our recent progress in experimental continuation. First, three different approaches are explained and compared which can be found in scientific papers on the topic. We then show S-Curve measurements of a Duffing oscillator experiment for which we derived optimal controller gains analytically. The derived formula for stabilizing PD-controller gains makes trial and error search for suitable values unnecessary. Since feedback control introduces higher harmonics in the driving signal, we consider a harmonization of the forcing signal. This harmonization is important to reduce shaker-structure interaction in the treatment of nonlinear frequency responses. Finally, the controlled nonlinear testing and harmonization is enhanced by a continuation algorithm adapted from numerical analysis and applied to a geometrically nonlinear beam test rig for which we measure the nonlinear forced response directly in the displacement-frequency plane.
Multipoint Turbulence Analysis with Helioswarm
Creators: name: Pecora, Francesco
name: Servidio, Sergio
name: Primavera, Leonardo
name: Greco, Antonella
name: Yang, Yan
name: Matthaeus, William H
Publisher: name: arXiv
Year: 2023
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: Exploration of plasma dynamics in space, including turbulence, is entering a new era of multi-satellite constellation measurements that will determine fundamental properties with unprecedented precision. Familiar but imprecise approximations will need to be abandoned and replaced with more advanced approaches. We present a preparatory study of the evaluation of second- and third-order statistics, using simultaneous measurements at many points. Here, for specificity, the orbital configuration of the NASA Helioswarm mission is employed in conjunction with three-dimensional magnetohydrodynamics numerical simulations of turbulence. The Helioswarm 9-spacecraft constellation flies virtually through the turbulence to compare results with the exact numerical statistics. We demonstrate novel increment-based techniques for the computation of (1) the multidimensional spectra and (2) the turbulent energy flux. This latter increment-space estimate of the cascade rate, based on the third-order Yaglom-Politano-Pouquet theory, uses numerous increment-space tetrahedra. Our investigation reveals that Helioswarm will provide crucial information on the nature of astrophysical turbulence.
Hipposideros larvatus
Creators: name: Koopman, Karl F.
Publisher: name: Zenodo
Year: 1993
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Chiroptera
Hipposideridae
Hipposideros
Hipposideros larvatus

description: Hipposideros larvatus (Horsfield, 1823). Zool. Res. Java, 6, pl. 9. TYPE LOCALITY: Indonesia, Java. DISTRIBUTION: Bangladesh to Vietnam; Yunnan, Kwangsi and Hainan (China); and through W Malaysia to Sumatra, Java, Borneo, and Sumba (Indonesia), and adjacent small islands. SYNONYMS: alongensis, barbensis, deformis, grandis, insignis, leptophyllus, neglectus, poutensis, sumbae, vulgaris.
description: Published as part of Karl F. Koopman, 1993, Order Chiroptera, pp. 137-241 in Mammal Species of the World (2 nd Edition), Washington and London :Smithsonian Institution Press on page 173, DOI: 10.5281/zenodo.7353060
The concert arias of Mozart: eighteenth-century operatic culture outside the theater
Creators: name: Goetjen, Michael
Publisher: name: No Publisher Supplied
Year: 2022

description: Although the term “concert aria” is a later scholarly appellation applied after Mozart’s lifetime to a group of his works which were not considered a unified genre in the eighteenth century, there are still through-lines which bind them together. In considering the “true” concert arias for unstaged concert performance as well as substitution arias in works by other composers, I propose a way of understanding the commonalities among these pieces that further illuminates how operatic culture was received outside the theater in the late eighteenth century. By examining these pieces in light of their origin in the private-public space of salons and house concerts as well as the public concert, I show that the juxtaposition of private and public aesthetics obtains across the whole repertoire. In this way, I argue for an understanding of the concert aria as a genre that includes a more diverse range of Mozart’s miscellaneous operatic works than simply the “true” concert arias.Building on this formulation, I analyze the ways in which Mozart achieves surprising stylistic idiosyncrasies in these works through three different lenses. First, I examine the arias that set texts previously set by other composers in light of questions of influence and emulation to determine how Mozart’s motivations in creating these settings affected their particular compositional features. Second, I analyze the arias that set texts by Pietro Metastasio in terms of their adherence to Cartesian and Enlightenment philosophies. Finally, I compare the concert arias of the 1780s to Mozart’s full-length opera seria works, Idomeneo and La clemenza di Tito, in order to show that these arias do not act as experiments in stylistic innovation to be used later in an opera but rather present opportunities for playing with stylistic features such as forms, instrumental solos, and virtuosic vocal writing for their own sake.In this dissertation, I provide a conceptual and methodological framework that could be applied on a larger scale to similar works by other eighteenth-century composers. In doing so, I attempt to advance our understanding of the role of operatic music outside the theater and to show that these miscellaneous pieces are as interesting and worthy of study as the full-length operas by Mozart or any other composer.
Investigation of the Lifetime Stability After Regeneration in Boron-Doped CZ Silicon
Creators: name: Walter, D.
name: Lim, B.
name: Voronkov, V.
name: Falster, R.
name: Schmidt, J.
Publisher: name: WIP
Year: 2014
Subjects: WAFER-BASED SILICON SOLAR CELLS AND MATERIALS TECHNOLOGY
Silicon Feedstock, Crystallisation and Wafering

description: 29th European Photovoltaic Solar Energy Conference and Exhibition; 555-559
description: The conversion efficiency of silicon solar cells made on boron-doped, oxygen-rich, mono-crystalline silicon was
limited in the past by the reduction of the bulk lifetime, due to a defect center which reveals its recombination-active
properties under illumination, i.e. under solar cell working conditions. However, the bulk lifetime and hence the solar
cell efficiency can be recovered if the solar cell is exposed to illumination at elevated temperatures. Within this
contribution we investigate the stability of the recovered lifetime at both room temperature and at elevated temperatures
typical for solar cell operating conditions in modules. After illumination for approximately 1000 h at room temperature
we have observed maximum lifetimes higher than 1 ms (at   10cm) on 1 Ωcm boron-doped Czochralskigrown
silicon suggesting that the well-known boron-oxygen-related defect center is no longer present in its common
configuration. Furthermore, we investigate the influence of different temperature treatments, during and prior to the
recovery process, which are known to influence the process, as well as different passivation stacks. We have observed
no dependence of the stability of the lifetime on these parameters, suggesting that a fast and stable recovery process
can be implemented into solar cell production
Decoding index finger position from EEG using random forests
Creators: name: Weichwald, Sebastian
name: Meyer, Timm
name: Schölkopf, Bernhard
name: Ball, Tonio
name: Grosse-Wentrup, Moritz
Publisher: name: arXiv
Year: 2015
Subjects: subject: Machine Learning (stat.ML)
subject: Neurons and Cognition (q-bio.NC)
subject: Quantitative Methods (q-bio.QM)
subject: FOS: Computer and information sciences
subject: FOS: Biological sciences

description: While invasively recorded brain activity is known to provide detailed information on motor commands, it is an open question at what level of detail information about positions of body parts can be decoded from non-invasively acquired signals. In this work it is shown that index finger positions can be differentiated from non-invasive electroencephalographic (EEG) recordings in healthy human subjects. Using a leave-one-subject-out cross-validation procedure, a random forest distinguished different index finger positions on a numerical keyboard above chance-level accuracy. Among the different spectral features investigated, high $β$-power (20-30 Hz) over contralateral sensorimotor cortex carried most information about finger position. Thus, these findings indicate that finger position is in principle decodable from non-invasive features of brain activity that generalize across individuals.
description: accepted manuscript
A nonlinear stochastic finite element method for solving elastoplastic problems with uncertainties
Creators: name: Zheng, Zhibao
name: Nackenhorst, Udo
Publisher: name: Chichester [u.a.] : Wiley
Year: 2023
Subjects: subject: curse of dimensionality
subject: nonlinear stochastic finite element method
subject: stochastic elastoplasticity
subject: stochastic Newton linearization
subject: weakly intrusive approximation
subject: Dewey Decimal Classification::500 | Naturwissenschaften::510 | Mathematik

description: This article presents an efficient nonlinear stochastic finite element method to solve stochastic elastoplastic problems. Similar to deterministic elastoplastic problems, we describe history-dependent stochastic elastoplastic behavior utilizing a series of (pseudo) time steps and go further to solve the corresponding stochastic solutions. For each time step, the original stochastic elastoplastic problem is considered as a time-independent nonlinear stochastic problem with initial values given by stochastic displacements, stochastic strains, and internal variables of the previous time step. To solve the stochastic solution at each time step, the corresponding nonlinear stochastic problem is transformed into a set of linearized stochastic finite element equations by means of finite element discretization and a stochastic Newton linearization, while the stochastic solution at each time step is approximated by a sum of the products of random variables and deterministic vectors. Each couple of the random variable and the deterministic vector is also used to approximate the stochastic solution of the corresponding linearized stochastic finite element equation that can be solved via a weakly intrusive method. In this method, the deterministic vector is computed by solving deterministic linear finite element equations, and corresponding random variables are solved by a non-intrusive method. Further, the proposed method avoids the curse of dimensionality successfully since its computational effort does not increase dramatically as the stochastic dimensionality increases. Four numerical cases are used to demonstrate the good performance of the proposed method.
Youth suicide by gunshot, Victoria, 1991-1996.
Creators: name: Shield, Jan.
Publisher: name: Monash University
Year: 2022

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Hipposideros lekaguli Thonglongya and Hill 1974
Creators: name: Koopman, Karl F.
Publisher: name: Zenodo
Year: 1993
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Chiroptera
Hipposideridae
Hipposideros
Hipposideros lekaguli

description: Hipposideros lekaguli Thonglongya and Hill, 1974. Mammalia, 38:286. TYPE LOCALITY: Thailand, Saraburi, Kaeng Khoi, Phu Nam Tok Tak Kwang. DISTRIBUTION: Thailand.
description: Published as part of Karl F. Koopman, 1993, Order Chiroptera, pp. 137-241 in Mammal Species of the World (2 nd Edition), Washington and London :Smithsonian Institution Press on page 173, DOI: 10.5281/zenodo.7353060
Star Formation in the Extreme Galactic Center Environment
Creators: name: Morris, Mark R.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Copious star formation occurs in the dense Central Molecular Zone (CMZ) of our Galaxy, but at a much smaller rate than occurs in a comparable mass of molecular gas in the Galactic disk. The combination of large turbulent velocity dispersions, a relatively strong magnetic field, and a strong tidal field all contribute to inhibiting star formation (SF) in different ways in different CMZ locations. Nonetheless, there are spectacular displays of recent and ongoing SF in the CMZ, including massive young stellar clusters, sites of abundant SF in progress, and numerous spots of protostellar or YSO activity. The presence of giant molecular clouds in the CMZ that are almost entirely devoid of SF indicates that SF requires a trigger that is not present everywhere. The dominant provocation of SF is likely to be cloud compression, either by large-scale shocks or by orbital motion of clouds into a region of enhanced tidal compression and/or enhanced external pressure. Recent hypotheses for where and how SF takes place in the CMZ are constrained by the recent orbital determinations of the massive Arches and Quintuplet clusters. Star formation in the central parsec is subject to a very different set of physical conditions, and is less well understood, but is important for the co-evolution of the central black hole and the nuclear star cluster.
description: 5 pages, Proceedings of the 7th Chile-Cologne-Bonn-Symposium: Physics and Chemistry of Star Formation
The Ubiquity of Coeval Starbursts in Massive Galaxy Cluster Progenitors
Creators: name: Casey, Caitlin M.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The Universe's largest galaxy clusters likely built the majority of their massive $>10^{11} M_\odot$ galaxies in simultaneous, short-lived bursts of activity well before virialization. This conclusion is reached from emerging datasets on $z>2$ proto-clusters and the characteristics of their member galaxies, in particular, rare starbursts and ultraluminous active galactic nuclei (AGN). The most challenging observational hurdle in identifying such structures is their very large volumes, $\sim10^{4}$ comoving Mpc$^3$ at $z>2$, subtending areas $\sim$half a degree on the sky. Thus the contrast afforded by an overabundance of very rare galaxies in comparison to the background can more easily distinguish overdense structures from the surrounding, normal density field. Five $210^{15} M_\odot$ galaxy clusters in the nearby Universe, a factor of five larger than expected in some simulations. Some tension yet exists between measurements of their volume density of starburst-rich proto-clusters and the expectation that they are generated via short-lived episodes. However, improved observations of proto-clusters over large regions of sky will certainly shed more light on the assembly of galaxy clusters, and whether or not they build their galaxies through episodic bursts as suggested here. [abridged]
description: 15 pages, 5 figures; accepted in ApJ
Progress in Laser-Based Foil Metallization for Industrial PERC Solar Cells
Creators: name: Graf, M.
name: Nekarda, J.
name: Eberlein, D.
name: Wöhrle, N.
name: Preu, R.
name: Böhme, R.
name: Große, T.
Publisher: name: WIP
Year: 2014
Subjects: WAFER-BASED SILICON SOLAR CELLS AND MATERIALS TECHNOLOGY
Silicon Solar Cell Improvements

description: 29th European Photovoltaic Solar Energy Conference and Exhibition; 532-535
description: In this work we present our latest results using aluminium foil as rear side metallization for solar cells
with dielectric passivation and laser fired contacts (LFC). Beside the reduction of the material costs compared to
screen printed aluminum paste, it is possible to use thinner or even no SiNx capping layer on the rear side Al2O3
passivation, without a decrease in short circuit current density jsc or open circuit voltage VOC. Therefore, the superior
reflection of the air gap between passivation and aluminum foil is independent from the passivation layer thickness,
as previously announced. Damp-heat-test reveals that a 10 nm thin SiNx capping is sufficient to protect the rear side
passivation layer from accelerated aging. With such an optimized passivation and a special front side screen printed
metallization scheme without busbars, designed for multi-busbar interconnection, we achieve a cell efficiency of
21.3 % on magnetically cast Cz-Si (156×156 mm2).
Hipposideros lylei Thomas 1913
Creators: name: Koopman, Karl F.
Publisher: name: Zenodo
Year: 1993
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Chiroptera
Hipposideridae
Hipposideros
Hipposideros lylei

description: Hipposideros lylei Thomas, 1913. Ann. Mag. Nat. Hist., ser. 8, 12:88. TYPE LOCALITY: Thailand, 50 mi. (80 km) N Chiengmai, Chiengdao Cave. DISTRIBUTION: Burma, Thailand, W Malaysia.
description: Published as part of Karl F. Koopman, 1993, Order Chiroptera, pp. 137-241 in Mammal Species of the World (2 nd Edition), Washington and London :Smithsonian Institution Press on page 173, DOI: 10.5281/zenodo.7353060
Bringing Stellar Evolution & Feedback Together: Summary of proposals from the Lorentz Center Workshop, 2022
Creators: name: Geen, Sam
name: Agrawal, Poojan
name: Crowther, Paul A.
name: Keller, B. W.
name: de Koter, Alex
name: Keszthelyi, Zsolt
name: van de Voort, Freeke
name: Ali, Ahmad A.
name: Backs, Frank
name: Bonne, Lars
name: Brugaletta, Vittoria
name: Derkink, Annelotte
name: Ekström, Sylvia
name: Fichtner, Yvonne A.
name: Grassitelli, Luca
name: Götberg, Ylva
name: Higgins, Erin R.
name: Laplace, Eva
name: Liow, Kong You
name: Lorenzo, Marta
name: McLeod, Anna F.
name: Meynet, Georges
name: Newsome, Megan
name: Oliva, G. André
name: Ramachandran, Varsha
name: Rey, Martin P.
name: Rieder, Steven
name: Romano-Díaz, Emilio
name: Sabhahit, Gautham
name: Sander, Andreas A. C.
name: Sarwar, Rafia
name: Stinshoff, Hanno
name: Stoop, Mitchel
name: Szécsi, Dorottya
name: Trebitsch, Maxime
name: Vink, Jorick S.
name: Winch, Ethan
Publisher: name: arXiv
Year: 2023
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Stars strongly impact their environment, and shape structures on all scales throughout the universe, in a process known as ``feedback''. Due to the complexity of both stellar evolution and the physics of larger astrophysical structures, there remain many unanswered questions about how feedback operates, and what we can learn about stars by studying their imprint on the wider universe. In this white paper, we summarize discussions from the Lorentz Center meeting `Bringing Stellar Evolution and Feedback Together' in April 2022, and identify key areas where further dialogue can bring about radical changes in how we view the relationship between stars and the universe they live in.
description: Accepted to the Publications of the Astronomical Society of the Pacific
Particulate air pollution and hospital admissions for cardiovascular disease in Melbourne
Creators: name: Geschke, Anne Margaret.
Publisher: name: Monash University
Year: 2022

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Light Induced Degradation of Solar Cells Made from High Performance Multi Wafers
Creators: name: Petter, K.
name: Fahrland, C.
name: Ludwig, Y.
name: Kersten, F.
Publisher: name: WIP
Year: 2014
Subjects: WAFER-BASED SILICON SOLAR CELLS AND MATERIALS TECHNOLOGY
Silicon Feedstock, Crystallisation and Wafering

description: 29th European Photovoltaic Solar Energy Conference and Exhibition; 551-554
description: High performance multi wafers are a new wafer class introduced some years ago. These wafers
are characterized by creating rather small grains at the start of crystallization leading to a reduced density of
structural defects and an increase of up to 0.5 % in solar cell efficiency. During the evaluation of high
performance multi wafers, we observed for some wafer types very high light-induced degradation of up to 10 %
relative in cell efficiency. More detailed investigations revealed that the affected wafers stem from the “bottom”
part of the ingots with small grain size and the degraded cells show a “sponge-like” structure in
electroluminescence images. The investigation of regeneration characteristic revealed that this degradation is not
caused by formation of boron oxygen complexes or splitting of iron boron pairs. Although we could reduce this
degradation mechanism by adapting the solar cell manufacturing process, avoiding this effect on wafer /
crystallization level will be needed for future cell efficiency improvements.
GAMA/WiggleZ: The 1.4GHz radio luminosity functions of high- and low-excitation radio galaxies and their redshift evolution to z=0.75
Creators: name: Pracy, Michael
name: Ching, John
name: Sadler, Elaine
name: Croom, Scott
name: Baldry, Ivan
name: Bland-Hawthorn, Joss
name: Brough, Sarah
name: Brown, Michael
name: Couch, Warrick
name: Davis, Tamara
name: Drinkwater, Michael
name: Hopkins, Andrew
name: Jarvis, Matt
name: Jelliffe, Ben
name: Jurek, Russell
name: Loveday, Jon
name: Pimbblet, Kevin
name: Prescott, Matt
name: Wisniosk, Emily
name: Woods, David
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present radio Active Galactic Nuclei (AGN) luminosity functions over the redshift range 0.005 < z < 0.75. The sample from which the luminosity functions are constructed is an optical spectroscopic survey of radio galaxies, identified from matched Faint Images of the Radio Sky at Twenty-cm survey (FIRST) sources and Sloan Digital Sky Survey (SDSS) images.The radio AGN are separated into Low Excitation Radio Galaxies (LERGs) and High Excitation Radio Galaxies (HERGs) using the optical spectra. We derive radio luminosity functions for LERGs and HERGs separately in the three redshift bins (0.005 < z < 0.3, 0.3 < z < 0.5 and 0.5 < z <0.75). The radio luminosity functions can be well described by a double power-law. Assuming this double power-law shape the LERG population displays little or no evolution over this redshift range evolving as ~$(1+z)^{0.06}$ assuming pure density evolution or ~ $(1+z)^{0.46}$ assuming pure luminosity evolution. In contrast, the HERG population evolves more rapidly, best fitted by ~$(1+z)^{2.93}$ assuming a double power-law shape and pure density evolution. If a pure luminosity model is assumed the best fitting HERG evolution is parameterised by ~$(1+z)^{7.41}$. The characteristic break in the radio luminosity function occurs at a significantly higher power (~1 dex) for the HERG population in comparison to the LERGs. This is consistent with the two populations representing fundamentally different accretion modes.
description: accepted to MNRAS
Room Temperature Spalling of Silicon Thin Foils Using a Stress Inducing Epoxy Layer
Creators: name: Bellanger, P.
name: Sousa, P.
name: Bouchard, P.-O.
name: Bernacki, M.
name: Brito, M.C.
name: Serra, J.M.
Publisher: name: WIP
Year: 2014
Subjects: WAFER-BASED SILICON SOLAR CELLS AND MATERIALS TECHNOLOGY
Silicon Feedstock, Crystallisation and Wafering

description: 29th European Photovoltaic Solar Energy Conference and Exhibition; 579-582
description: The PV industry is strongly committed to reduce costs by reducing solar cell thickness. Considering
that more than 50 % of the silicon material is lost in the wafering step, a lower bound limit will prevent from
continuing this path. Therefore new approaches are necessary. Although several techniques to produce thin silicon
layers rely on weakening a silicon region of an ingot by ion implantation or by a porous layer creation to detach
silicon foils of a required thickness, the Stress induced LIft-off Method (SLIM-cut) only needs a simple deposition of
a stress inducing layer, followed by thermal processing.
In this paper, we present large area (5 x 5 cm2) SLIM-cut foils obtained by cooling at room temperature using an
epoxy stress inducing layer during the SUGAR project. Numerical simulations were performed to guide the definition
of an optimum geometry. We demonstrate the capability to obtain several thin foils from the same substrate. Residual
stress maps of foils are presented, along with measured minority carrier lifetimes. Lifetimes of 200 microseconds
were obtained in 130 micron thick foils, giving estimated conversion efficiencies around 20 % using PC1D.
Vacuum enhanced charging of a quantum battery
Creators: name: Santos, Tiago F. F.
name: de Almeida, Yohan Vianna
name: Santos, Marcelo F.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum batteries are quantum systems that store energy which can then be used for quantum tasks. One relevant question about such systems concerns the differences and eventual advantages over their classical counterparts, whether in the efficiency of the energy transference, input power, total stored energy or other relevant physical quantities. Here, we show how a purely quantum effect related to the vacuum of the electromagnetic field can enhance the charging of a quantum battery. In particular, we demonstrate how an anti-Jaynes Cummings interaction derived from an off-resonant Raman configuration can be used to increase the stored energy of an effective two-level atom when compared to its classically driven counterpart, eventually achieving full charging of the battery with zero entropic cost.
The effect on caesarean section rates of the changing demographic characteristics of the childbearing population
Creators: name: Bessell, Christine.
Publisher: name: Monash University
Year: 2022

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
FR II radio galaxies at low frequencies I: morphology, magnetic field strength and energetics
Creators: name: Harwood, Jeremy J.
name: Croston, Judith H.
name: Intema, Huib T.
name: Stewart, Adam J.
name: Ineson, Judith
name: Hardcastle, Martin J.
name: Godfrey, Leith
name: Best, Philip
name: Brienza, Marisa
name: Heesen, Volker
name: Mahony, Elizabeth K.
name: Morganti, Raffaella
name: Murgia, Matteo
name: Orrú, Emanuela
name: Röttgering, Huub
name: Shulevski, Aleksandar
name: Wise, Michael W.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Due to their steep spectra, low-frequency observations of FR II radio galaxies potentially provide key insights in to the morphology, energetics and spectrum of these powerful radio sources. However, limitations imposed by the previous generation of radio interferometers at metre wavelengths has meant that this region of parameter space remains largely unexplored. In this paper, the first in a series examining FR IIs at low frequencies, we use LOFAR observations between 50 and 160 MHz, along with complementary archival radio and X-ray data, to explore the properties of two FR II sources, 3C452 and 3C223. We find that the morphology of 3C452 is that of a standard FR II rather than of a double-double radio galaxy as had previously been suggested, with no remnant emission being observed beyond the active lobes. We find that the low-frequency integrated spectra of both sources are much steeper than expected based on traditional assumptions and, using synchrotron/inverse-Compton model fitting, show that the total energy content of the lobes is greater than previous estimates by a factor of around 5 for 3C452 and 2 for 3C223. We go on to discuss possible causes of these steeper than expected spectra and provide revised estimates of the internal pressures and magnetic field strengths for the intrinsically steep case. We find that the ratio between the equipartition magnetic field strengths and those derived through synchrotron/inverse-Compton model fitting remains consistent with previous findings and show that the observed departure from equipartition may in some cases provide a solution to the spectral versus dynamical age disparity.
description: 13 pages, 5 figures, 10 tables. Accepted for publication in MNRAS