cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
On the computation of the slow dynamics of nonlinear modes of mechanical systems
Creators: name: Krack, Malte
name: Scheidt, Lars Panning-von
name: Wallaschek, Jörg
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computational Engineering, Finance, and Science (cs.CE)
subject: FOS: Computer and information sciences

description: A novel method for the numerical prediction of the slowly varying dynamics of nonlinear mechanical systems has been developed. The method is restricted to the regime of an isolated nonlinear mode and consists of a two-step procedure: In the first step, a multiharmonic analysis of the autonomous system is performed to directly compute the amplitude-dependent characteristics of the considered nonlinear mode. In the second step, these modal properties are used to construct a two-dimensional reduced order model (ROM) that facilitates the efficient computation of steady-state and unsteady dynamics provided that nonlinear modal interactions are absent. The proposed methodology is applied to several nonlinear mechanical systems ranging form single degree-of-freedom to Finite Element models. Unsteady vibration phenomena such as approaching behavior towards an equilibrium point or limit cycles, and resonance passages are studied regarding the effect of various nonlinearities such as cubic springs, unilateral contact and friction. It is found that the proposed ROM facilitates very fast and accurate analysis of the slow dynamics of nonlinear systems. Moreover, the ROM concept offers a huge parameter space including additional linear damping, stiffness and near-resonant forcing.
Polarization gaps in spiral photonic crystals
Creators: name: Lee, Jeffrey Chi Wai
name: Chan, C. T.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We studied the optical properties of a dielectric photonic crystal structure with spirals arranged in a hexagonal lattice. The dielectric constant of the material is 9 and the filling ratio is 15.2%. We found that this kind of structure exhibits a significant polarization gap for light incident along the axis of the spirals. The eigenmodes inside the polarization gap are right-hand (left-hand) circularly polarized depending on the whether the spirals are left-handed (right-handed). The transmission spectrum of a slab of such a structure has been calculated and matches well with the analysis of the eigenmodes.
description: 6 pages, 7 figures
Role of calcium influx in process extension of oligodendrocytes
Creators: name: Yoo, Andrew
Publisher: name: University of British Columbia
Year: 2009

description: The effects of phorbol ester, which activates protein kinase C (PKC), and free cytosolic Ca²+ were studied on their role in process extension in cultured murine oligodendrocytes. Previous studies have shown that PKC activation by phorbol esters greatly enhances process formation in cultured oligodendrocytes (OLG), an important step for myelination. Because of the possible involvement of PKC and Ca²+ in process extension in OLGs, we studied the effect of PKC activation on changes in intracellular free Ca²+ concentration ([Ca²+]i). We found that PKC activation by phorbol esters induced a sustained rise in [Ca²+]i of OLGs. This rise was due to transmembrane influx of Ca²+ since omission of extracellular Ca²+ failed to trigger the rise in [Ca²+]i. Changes in [Ca²+]i were also produced by modifying the extracellular [Ca²+] where increasing extracellular [Ca²+] led to a rise in [Ca²+]i. In order to establish the relationship between Ca²+ influx and OLG process formation, OLGs were incubated in media containing various [Ca²+] with or without phorbol ester treatment. After 72 hours, OLGs were immunostained using an antibody against proteolipid protein (PLP). The correlation between the process formation of OLGs and extracellular [Ca²+] was assessed by obtaining the percentage of OLGs with longer processes in the OLG population, the number of primary process per cell body and the area covered by PLP-positive OLG processes. Our results indicate that the degree of OLG process extension is related to the [Ca²+] present in the culture media. We found that increased extracellular [Ca²+] alone, without concurrent phorbol ester application, resulted in increased OLG process extension. When OLGs were treated with phorbol ester, positive correlations between increasing extracellular [Ca²+] and some aspects of OLG process extension were seen, as suggested by the results from analysis of covariance (ANCOVA). In addition, blocking the intracellular Ca²+ signalling by BAPTA as well as inhibiting PKC by RO-31 leads to retraction o f membrane sheath o f OLGs . Our results demonstrate that increasing [Ca²+]i stimulates OLG process outgrowth and suggest that intracellular Ca²+ signalling following either phorbol ester treatment or increasing extracellular [Ca²+] may be an important mediator for OLG process extension.
An electrochemical NADH biosensor based on a nanoporous gold electrode modified with diaphorase and an osmium polymer
Creators: name: Otero, Fernando
name: Mandal, Tanushree
name: Leech, Dónal
name: Magner, Edmond
Publisher: name: University of Limerick
Year: 2024
Subjects: classificationCode: 34
subject: Chemical sciences
subject: FOS: Chemical sciences

description: NADH is a cofactor used by a wide range of dehydrogenases. Measurement of the concentration of NADH is widely used to measure the activity of enzymes. Extensive efforts have been made to develop electrochemical sensors for NADH determination at low overpotentials to avoid interferences. The development of an enzymatic electrochemical biosensor for the detection of NADH is described. Nanoporous gold electrodes were utilised for the immobilization of diaphorase and osmium-based polymer Os(bpy)2(PVI). Nanoporous gold electrodes of different pore sizes were manufactured by varying the dealloying temperature. To optimise the enzymatic response, the concentrations of polymer and enzyme, average pore size and the operating temperature were examined with the optimal performance observed using 10 µL of Os(bpy)2(PVI) and 5 µL of diaphorase at concentrations of 6 and 10 mg/mL, respectively, on nanoporous gold electrodes with an average pore size of 5.9 nm. The biosensor showed a high sensitivity of 89.6 µA/cm2 mM, a low LOD of 0.8 µM and a linear range from 5 to 100 µM at a potential of 0.35 V vs Ag/AgCl at a temperature of 40 ◦C.
The General Law Principles for Protection the Personal Data and their Importance
Creators: name: de Souza, Jonatas S.
name: Abe, Jair M.
name: de Lima, Luiz A.
name: de Souza, Nilson A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cryptography and Security (cs.CR)
subject: Computers and Society (cs.CY)
subject: FOS: Computer and information sciences

description: Rapid technological change and globalization have created new challenges when it comes to the protection and processing of personal data. In 2018, Brazil presented a new law that has the proposal to inform how personal data should be collected and treated, to guarantee the security and integrity of the data holder. The purpose of this paper is to emphasize the principles of the General Law on Personal Data Protection, informing real cases of leakage of personal data and thus obtaining an understanding of the importance of gains that meet the interests of Internet users on the subject and its benefits to the entire Brazilian society.
description: 12 pages, 5 figures, 7th International Conference on Computer Science, Engineering and Information Technology (CSEIT 2020)
title: Dagstuhl Reports, Table of Contents, Volume 9, Issue 11, 2019
Creators: name: Schloss Dagstuhl – Leibniz-Zentrum für Informatik
Publisher: name: Schloss Dagstuhl – Leibniz-Zentrum für Informatik
Year: 2020
Subjects: subject: Table of Contents
subject: Frontmatter

description: Dagstuhl Reports, Table of Contents, Volume 9, Issue 11, 2019
description: Dagstuhl Reports, Volume 9, Issue 11, pages i-ii
Improving entanglement generation rates in trapped ion quantum networks using nondestructive photon measurement and storage
Creators: name: Hannegan, John
name: Siverns, James D.
name: Cassell, Jake
name: Quraishi, Qudsia
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: Long range quantum information processing will require the integration of different technologies to form hybrid architectures combining the strengths of multiple quantum systems. In this work, we propose a hybrid networking architecture designed to improve entanglement rates in quantum networks based on trapped ions. Trapped ions are excellent candidates as network nodes but photon losses make long-distance networking difficult. To overcome some losses and extend the range of trapped-ion-based networks, we propose including neutral-atom-based non-destructive single-photon detection and single photon storage in between networking nodes, forming a hybrid network. This work builds on recently demonstrated optical frequency conversion of single photons emitted by trapped ions. We derive the average two-node entanglement rate for this proposed network architecture as a function of distance. Using reasonable experimental parameters, we show this proposed quantum network can generate remote entanglement rates up to a factor of 100 larger than that of an equivalent homogeneous network at both near-IR and C-band wavelengths for distances up to 50 km.
The Optical Luminosity-Time Correlation for More Than 100 Gamma-Ray Burst Afterglows
Creators: name: Dainotti, M. G.
name: Livermore, S.
name: Kann, D. A.
name: Li, L.
name: Oates, S.
name: Yi, S.
name: Zhang, B.
name: Gendre, B.
name: Cenko, B.
name: Fraija, N.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Gamma-Ray Bursts (GRBs) are fascinating events due to their panchromatic nature. Their afterglow emission is observed from sub-TeV energies to radio wavelengths. We investigate GRBs that present an optical plateau, leveraging on the resemblance with the X-ray plateau shown in many GRB light curves (LCs). We comprehensively analyze all published GRBs with known redshifts and optical plateau observed mostly by the Neil Gehrels Swift Observatory (Swift). We fit 267 optical LCs and show the existence of the plateau in 102 cases, which is the largest compilation so far of optical plateaus. For 56 Swift GRBs with optical and X-ray plateaus, we compare the rest-frame end time at both wavelengths (T*_opt , T*_X), and conclude that the plateau is achromatic between T*_opt and T*_X. We also confirm the existence of the two-dimensional relations between T*_opt and the optical luminosity at the end of the plateau emission, which resembles the same luminosity-time correlation in X-rays (Dainotti et al. 2013). The existence of this optical correlation has been demonstrated for the largest sample of optical plateaus in the literature to date. The squared scatter in this optical correlation is smallest for the subset of the Gold GRBs with a decrease in the scatter equivalent to 52.4% when compared to the scatter of the entire GRB sample.
description: 10 pages, 3 figures, 2 tables
Investigation into the function of two small nonstructural proteins of the parvovirus V19
Creators: name: Zagrodney, Darren Bryce
Publisher: name: University of British Columbia
Year: 2009

description: The Parvovirus B19, known to cause disease in humans, has been shown to produce two small, unique, nonstructural proteins of 7.5 and 11 kilodaltons (kDa). No functional significance, nor homology with other proteins, has yet been attributed to either the 7.5 kDa or the 11 kDa B19 proteins. However, due to the small coding capacity of B19 it is thought that these two proteins most likely play a functional role in the replication cycle of this virus. Due to its narrow host range no continuous cell line permissive for B19 infection is available for routine investigation. Therefore, studies must be performed in the absence of a permissive cell line. Previous studies have failed to demonstrate Zn++ binding or transactivation activities for either protein. Neither have been shown to be phosphorylated, nor to interact with other known viral proteins. However, the 7.5 kDa protein has been implicated in interactions with proteins within a lysate of COS-7 cells. Therefore, further investigations have focused on interactions of both the 7.5 kDa and 11 kDa B19 proteins with host cellular proteins. Far western blot experiments indicate that two COS-7 cellular proteins of 43 kDa and 55 kDa, in addition to lower molecular weight proteins, may interact with the 7.5 kDa B19 protein. Western blot experiments suggests that the 55 kDa cellular protein is most likely vimentin. Results of affinity column experiments utilizing glutathione S-transferase fusion proteins suggest that the 11 kDa protein may interact with two K-562 cellular proteins of approximately 27 kDa and 85 kDa. These interactions were substantiated with further batch affinity experiments. In addition, preliminary far western studies demonstrate an in vitro interaction between Growth Factor Receptor Binding protein-2 (Grb2) and the 11 kDa B19 protein. This suggests that the 11 kDa protein may enable B19 to influence its host cell environment. [Scientific formulae used in this abstract could not be reproduced.]
Asymptotics for the number of n-quasigroups of order 4
Creators: name: Potapov, Vladimir
name: Krotov, Denis
Publisher: name: arXiv
Year: 2006
Subjects: subject: Combinatorics (math.CO)
subject: Group Theory (math.GR)
subject: FOS: Mathematics
subject: 20N15; 05B15; 94B25

description: The asymptotic form of the number of n-quasigroups of order 4 is $3^{n+1} 2^{2^n +1} (1+o(1))$. Keywords: n-quasigroups, MDS codes, decomposability, reducibility.
description: 15 p., 3 fig
Poisson-Dirac branes in Poisson-Sigma models
Creators: name: Calvo, Ivan
name: Falceto, Fernando
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We analyse the general boundary conditions (branes) consistent with the Poisson-sigma model and study the structure of the phase space of the model defined on the strip with these boundary conditions. Finally, we discuss the perturbative quantization of the model on the disc with a Poisson-Dirac brane and relate it to Kontsevich's formula for the deformation quantization of the Dirac bracket induced on the brane.
description: 8pages. Contribution to the proceedings of the Conference Poisson 2004
title: Dagstuhl Reports, Table of Contents, Volume 9, Issue 12, 2019
Creators: name: Schloss Dagstuhl – Leibniz-Zentrum für Informatik
Publisher: name: Schloss Dagstuhl – Leibniz-Zentrum für Informatik
Year: 2020
Subjects: subject: Table of Contents
subject: Frontmatter

description: Dagstuhl Reports, Table of Contents, Volume 9, Issue 12, 2019
description: Dagstuhl Reports, Volume 9, Issue 12, pages i-ii
Non-LTE neutral carbon spectral line formation in late-type stars
Creators: name: Fabbian, Damian
name: Asplund, Martin
name: Carlsson, Mats
name: Kiselman, Dan
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present non-Local Thermodynamic Equilibrium (non-LTE) calculations for neutral carbon spectral line formation, carried out for a grid of model atmospheres covering the range of late-type stars. The results of our detailed calculations suggest that the carbon non-LTE corrections in these stars are higher than usually adopted, remaining substantial even at low metallicity. For the most metal-poor stars in the sample of Akerman et al. (2004), the non-LTE abundance corrections are of the order of -0.35...-0.45 dex (when neglecting H collisions). Applying our results to those observations, the apparent [C/O] upturn seen in their LTE analysis is no longer present, thus revealing no need to invoke contributions from Pop. III stars to the carbon nucleosynthesis.
description: 2 pages, 1 figure. To appear in the Proceedings of IAU Symposium 228 "From Li to U: Elemental Tracers of Early Cosmic Evolution", eds. V. Hill, P. Francois and F. Primas, Cambridge University Press. Replacement with minor textual corrections
Comparing Pattern Recognition Feature Sets for Sorting Triples in the FIRST Database
Creators: name: Proctor, D. D.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Pattern recognition techniques have been used with increasing success for coping with the tremendous amounts of data being generated by automated surveys. Usually this process involves construction of training sets, the typical examples of data with known classifications. Given a feature set, along with the training set, statistical methods can be employed to generate a classifier. The classifier is then applied to process the remaining data. Feature set selection, however, is still an issue. This report presents techniques developed for accommodating data for which a substantive portion of the training set cannot be classified unambiguously, a typical case for low resolution data. Significance tests on the sort-ordered, sample-size normalized vote distribution of an ensemble of decision trees is introduced as a method of evaluating relative quality of feature sets. The technique is applied to comparing feature sets for sorting a particular radio galaxy morphology, bent-doubles, from the Faint Images of the Radio Sky at Twenty Centimeters (FIRST) database. Also examined are alternative functional forms for feature sets. Associated standard deviations provide the means to evaluate the effect of the number of folds, the number of classifiers per fold, and the sample size on the resulting classifications.
description: 30 pages, 17 figures Accepted ApJS, March 27,2006
The Schwinger Representation of a Group: Concept and Applications
Creators: name: Chaturvedi, S.
name: Marmo, G.
name: Mukunda, N.
name: Simon, R.
name: Zampini, A.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The concept of the Schwinger Representation of a finite or compact simple Lie group is set up as a multiplicity-free direct sum of all the unitary irreducible representations of the group. This is abstracted from the properties of the Schwinger oscillator construction for SU(2), and its relevance in several quantum mechanical contexts is highlighted. The Schwinger representations for $SU(2), SO(3)$ and SU(n) for all $n$ are constructed via specific carrier spaces and group actions. In the SU(2) case connections to the oscillator construction and to Majorana's theorem on pure states for any spin are worked out. The role of the Schwinger Representation in setting up the Wigner-Weyl isomorphism for quantum mechanics on a compact simple Lie group is brought out.
description: Latex, 17 pages
Full-Frequency GW without Frequency
Creators: name: Bintrim, Sylvia J.
name: Berkelbach, Timothy C.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Chemical Physics (physics.chem-ph)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: Efficient computer implementations of the GW approximation must approximate a numerically challenging frequency integral; the integral can be performed analytically, but doing so leads to an expensive implementation whose computational cost scales as $O(N^6)$ where $N$ is the size of the system. Here we introduce a new formulation of the full-frequency GW approximation by exactly recasting it as an eigenvalue problem in an expanded space. This new formulation (1) avoids the use of time or frequency grids, (2) naturally precludes the common "diagonal" approximation, (3) enables common iterative eigensolvers that reduce the canonical scaling to $O(N^5)$, and (4) enables a density-fitted implementation that reduces the scaling to $O(N^4)$. We numerically verify these scaling behaviors and test a variety of approximations that are motivated by this new formulation. In this new formulation, the relation of the GW approximation to configuration interaction, coupled-cluster theory, and the algebraic diagrammatic construction is made especially apparent, providing a new direction for improvements to the GW approximation.
description: 5+2 pages, 3 figures
title: Dagstuhl Reports, Table of Contents, Volume 10, Issue 1, 2020
Creators: name: Schloss Dagstuhl – Leibniz-Zentrum für Informatik
Publisher: name: Schloss Dagstuhl – Leibniz-Zentrum für Informatik
Year: 2020
Subjects: subject: Table of Contents
subject: Frontmatter

description: Dagstuhl Reports, Table of Contents, Volume 10, Issue 1, 2020
description: Dagstuhl Reports, Volume 10, Issue 1, pages i-ii
Strongly bound mesons at finite temperature and in magnetic fields from AdS/CFT
Creators: name: Jensen, K. D.
name: Karch, A.
name: Price, J.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study mesons in N=4 super Yang-Mills theory with fundamental flavors added at large 't Hooft coupling using the gauge/gravity correspondence. High-spin mesons are well described by using semiclassical string configurations. We determine the meson spectrum at finite temperature and in a background magnetic field.
description: 15 pages, 11 figures; v2: references added
Intergalactic medium dispersion measures of fast radio bursts estimated from IllustrisTNG simulation and their cosmological applications
Creators: name: Zhang, Z. J.
name: Yan, K.
name: Li, C. M.
name: Zhang, G. Q.
name: Wang, F. Y.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Fast radio bursts (FRBs) are millisecond-duration radio transients and can be used as a cosmological probe. However, the dispersion measure (DM) contributed by intergalactic medium (IGM) is hard to be distinguished from other components. In this paper, we use the IllustrisTNG simulation to realistically estimate the $DM_{\rm IGM}$ up to $z\sim 9$. We find $DM_{\rm IGM} = 892^{+721}_{-270}$ pc cm$^{-3}$ at $z=1$. The probability distribution of $DM_{\rm IGM}$ can be well fitted by a quasi-Gaussian function with a long tail. The tail is caused by the structures along the line of sight in IGM. Subtracting DM contributions from the Milky Way and host galaxy for localized FRBs, the $DM_{\rm IGM}$ value is close to the derived $DM_{\rm IGM}-z$ relation. We also show the capability to constrain the cosmic reionization history with the $DM_{\rm IGM}$ of high-redshift FRBs in the IllustrisTNG universe. The derived $DM_{\rm IGM}-z$ relation at high redshifts can be well fitted by a $tanh$ reionization model with the reionization redshift $z=5.95$, which is compatible with the reionization model used by the IllustrisTNG simulation. The $DM_{\rm IGM}$ of high-redshift FRBs also provides an independent way to measure the optical depth of cosmic microwave background (CMB). Our result can be used to derive the pseudo-redshifts of non-localized FRBs for $DM_{\rm IGM}<4000$ \ \ pc cm$^{-3}$.
description: 10 pges, 1 table, accepted for publication in ApJ
Remarks on PT-pseudo-norm in PT-symmetric quantum mechanics
Creators: name: Trinh, D. T.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: This paper presents an underlying analytical relationship between the $\mathcal{PT}$-pseudo-norm associated with the $\mathcal{PT}$-symmetric Hamiltonian $H = p^2+ V(q)$ and the Stokes multiplier of the differential equation corresponding to this Hamiltonian. We show that the sign alternation of $\mathcal{PT}$-pseudo-norm, which has been observed as a generic feature of the $\mathcal{PT}$-inner product, is essentially controlled by the derivative of Stokes multiplier with respect to eigenparameter.
description: 15 pages, 1 figure v2: minor conceptual changes
Designing of an off-grid photovoltaic system for a residential building
Creators: name: HASAN, MOHAMMAD RAQUIBUL
name: Shobug, Md. Asaduzzaman
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 401703
subject: Energy generation, conversion and storage (excl. chemical and electrical)

description: Photovoltaic power system, can be used as electrical power source for home to meet its daily energy requirement, through direct conversion of solar irradiance into electricity. A detailed design of a standalone photovoltaic power system for uninterrupted power supply of a residential building in a typical urban area is presented. Designing, selecting and determining specifications of different components are used in the system conforming the load estimation. A procedure to specify the components of standalone PV system and a detailed cost analysis has been carried out in this paper. The analysis outlines that though the initial investment is high, but within few years this amount returns back with a gain in substantial dividend during the system life span.
Efficacious Additions to the Standard Model
Creators: name: Ma, Ernest
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: If split supersymmetry can be advocated as a means to have gauge-coupling unification as well as dark matter, another plausible scenario is to enlarge judiciously the particle content of the Standard Model to achieve the same goals without supersymmetry. A simple efficacious example is presented.
description: 6 pages, no figure, one reference added, version to appear in PLB
MAKTABGACHA YOSHDAGI BOLALARNING KONGNITIV JARAYONLARINI DIDAKTIK O'YINLAR ORQALI RIVOJLANTIRISH
Creators: name: Nazirova Dilafruz Alisherovna, Atavullaeva Mahfuzaxon
Publisher: name: Zenodo
Year: 2025

description: Annotatsiya. Ushbu maqolada katta maktabgacha yoshdagi bolalarning kognitiv jarayonlarini didaktik o‘yinlar orqali rivojlantirish masalasi ko‘rib chiqiladi. Bolalarning idrok, diqqat, xotira, tafakkur va nutq kabi asosiy bilish jarayonlari hamda ularning intellektual rivojlanishdagi o‘rni yoritiladi. Shuningdek, didaktik o‘yinlarning ta’lim jarayonidagi ahamiyati va ularning samarali pedagogik vosita sifatida qo‘llanilishi tahlil qilinadi.
1990 Safety Belt Usage Survey and Evaluation of Effectiveness in Kentucky
Creators: name: Agent, Kenneth R.
Publisher: name: Kentucky Transportation Center, University of Kentucky
Year: 1990
Subjects: subject: Transportation Engineering

description: The objective of the survey was to establish 1990 safety belt and child safety seat usage rates in Kentucky. Data were collected at 100 sites and combined based on vehicle miles travelled for a given type of highway, rural or urban location, and county population category. Also included in this report is an analysis of accident records evaluating the effectiveness of safety belts.  Statewide usage rates were 32 percent for drivers and front-seat passengers (over 19 years of age) and 57 percent for children under four years of age (front and rear seats). Usage rates had increased significantly in 1990 compared to 1989. Rates were highest on interstate highways and lowest on rural, non-interstate highways.  Benefits in the reduction of injuries for occupants involved in police·reported accidents wearing a safety belt or in a safety seat were shown through the analysis of accident records. For example, a 45 percent reduction in fatal or incapacitating injuries was determined for drivers wearing a safety belt compared to those who were not restrained.  The increased usage that resulted in Fayette County after enactment of a local mandatory usage law was shown. The recommendation is that a statewide mandatory safety belt law should be passed or, in lieu of a statewide law, local governments should pass such a law.
Reconstruction of MRI EPI data from multiple vendors using open source tools
Creators: name: Roopchansingh, Vinai
name: Derbyshire, J. Andrew
name: Hansen, David C.
name: Ozenne, Valéry
name: Bandettini, Peter A.
Publisher: name: Zenodo
Year: 2021
Subjects: MRI
EPI
reconstruction
ISMRMRD
open source

description: Recently, there has been a proliferation of community-developed MR image reconstruction tools. Many of these tools are open-source, and some have promised cross-vendor compatibility. Until now, such compatibility has only been demonstrated on basic examples of data encoding, requiring only straightforward reconstruction algorithms. In this work, we demonstrate the ability to reconstruct a more complex data encoding scheme, namely Echo-Planar Imaging (EPI), from a pair of major MRI scanner vendors’’ platforms using a single, common implementation of the reconstruction algorithms. The vendors' original raw data, as well as the converted versions, to the ISMRMRD format, are included in this archive.
Nonlinear Signal Distortion Corrections Through Quantum Sensing
Creators: name: Chaves, Kevin R.
name: Wu, Xian
name: Rosen, Yaniv J.
name: DuBois, Jonathan L
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Having accurate gate generation is essential for precise control of a quantum system. The generated gate usually suffers from linear and nonlinear distortion. Previous works have demonstrated how to use a qubit to correct linear frequency distortions but have not commented on how to handle nonlinear distortions. This is an important issue as we show that nonlinear amplitude distortions from the RF electronics can affect Rabi pulses by as much as 10%. We present work that demonstrates how a transmon qubit can be used as a highly sensitive cryogenic detector to characterize these nonlinear amplitude distortions. We show that a correction can drive these errors down to <1% over a 700 MHz range. This correction technique provides a method to minimize the effects of signal distortions and can be easily applied to broadband control pulses to produce higher fidelity arbitrary quantum gates.
description: 4 pages, 4 figues
Inclusive production of a Higgs or Z boson in association with heavy quarks
Creators: name: Maltoni, Fabio
name: McElmurry, Thomas
name: Willenbrock, Scott
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We calculate the cross section for the production of a Z boson in association with heavy quarks. We suggest that this cross section can be measured using an inclusive heavy-quark tagging technique. This could be used as a feasibility study for the search for a Higgs boson produced in association with bottom quarks. We argue that the best formalism for calculating that cross section is based on the leading-order process b b -> h, and that it is valid for all Higgs masses of interest at both the Fermilab Tevatron and the CERN Large Hadron Collider.
description: 14 pages
title: Dagstuhl Reports, Table of Contents, Volume 10, Issue 2, 2020
Creators: name: Schloss Dagstuhl – Leibniz-Zentrum für Informatik
Publisher: name: Schloss Dagstuhl – Leibniz-Zentrum für Informatik
Year: 2020
Subjects: subject: Table of Contents
subject: Frontmatter

description: Dagstuhl Reports, Table of Contents, Volume 10, Issue 2, 2020
description: Dagstuhl Reports, Volume 10, Issue 2, pages i-ii
Cross-sections for the ${^{27}\!\rm{Al}}(γ,\textit{x})^{24}\rm{Na}$ multiparticle reaction at $E_{\rm{γmax}}$ = 40 $÷$ 95 MeV
Creators: name: Vodin, A. N.
name: Deiev, O. S.
name: Timchenko, I. S.
name: Olejnik, S. N.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The bremsstrahlung flux-averaged cross-sections $\langle{σ(E_{\rm{γmax}})}\rangle$ and the cross-sections per equivalent photon $\langle{σ(E_{\rm{γmax}})_{\rm{Q}}}\rangle$ were measured for the photonuclear multiparticle reaction $^{27}\!\rm{Al}(γ,\textit{x}; \textit{x} = {^{3}\rm{He}} + pd + 2pn)^{24}\rm{Na}$ at bremsstrahlung end-point energies ranging from 40 MeV to 95 MeV. The experiments were performed using the beam from the NSC KIPT electron linear accelerator LUE-40 with the use of the $γ$-activation technique. The bremsstrahlung quantum flux was calculated with the program GEANT4 and, in addition, was monitored by means of the $^{100}\rm{Mo}(γ,n)^{99}\rm{Mo}$ reaction. The cross-sections $σ(E)$ were computed using the TALYS1.9 code with the default options. The measured average cross-sections $\langle{σ(E_{\rm{γmax}})}\rangle$ and $\langle{σ(E_{\rm{γmax}})_{\rm{Q}}}\rangle$ have appeared to be higher by factors of 2.0 to 2.4 than the theoretical results. The experimental results have been found to be in good agreement with the data of other laboratories. Consideration is given to special features of calculation of $\langle{σ(E_{\rm{γmax}})}\rangle$ and $\langle{σ(E_{\rm{γmax}})_{\rm{Q}}}\rangle$ for the $^{27}\!\rm{Al}(γ,\textit{x})^{24}\rm{Na}$ reaction, with occurrence of three $^{27}\!\rm{Al}$ photodisintegration channels. The paper also discusses the possibility of using the $^{27}\!\rm{Al}(γ,\textit{x})^{24}\rm{Na}$ reaction for monitoring the bremsstrahlung $γ$-quantum flux in the photon energy region above 30 MeV.
description: 16 pages, 6 figures, 1 table
Unadulterated spectral function of low energy quasiparticles: Bi-2212, nodal direction
Creators: name: Evtushinsky, D. V.
name: Kordyuk, A. A.
name: Borisenko, S. V.
name: Zabolotnyy, V. B.
name: Knupfer, M.
name: Fink, J.
name: Buechner, B.
name: Pan, A. V.
name: Erb, A.
name: Lin, C. T.
name: Berger, H.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Fitting the momentum distribution photoemission spectra to the Voigt profile appears to be a robust procedure to purify the interaction effects from the experimental resolution. In application to Bi-2212 high-Tc cuprates, the procedure reveals the true scattering rate at low binding energies and temperatures, and, consequently, the true value of the elastic scattering. Reaching the minimal value ~ 16 meV, the elastic scattering does not reveal a systematic dependence on doping level, but is rather sensitive to impurity concentration, and can be explained by the forward scattering on out-of-plane impurities. The inelastic scattering is found to form well-defined quasiparticles with the quadratic and cubic energy dependence of the scattering rate above and below Tc, respectively. The observed energy-temperature asymmetry of the scattering rate is also discussed.
description: 4 revtex pages, 4 figures
Konferenz Europäischer Kirchen (hrsg.): Gott eint - in Christus eine neue Schöpfung
Creators: name: Vo.
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 42 Nr. 3 (1993): Ökumenische Rundschau, Band 42, Heft 3
Lexical elicitation: Vowel contrasts and bilabials
Creators: name: Sales, Henry
name: Garvin, Karee
name: Melguy, Yevgeniy
name: Michael, Lev
name: Scott, Tessa
name: Wilbanks, Eric
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2021
Subjects: subject: mam

description: Minimal and near minimal pairs with vowel creak, vowel length, and bilabial implosive release. Lead: Karee Garvin. Scribe: Yevgeniy Melguy. Clean copy: Tessa Scott.
Halperin (m, m',n) bilayer quantum Hall states on thin cylinders
Creators: name: Seidel, Alexander
name: Yang, Kun
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The Halperin $(m,m',n)$ bilayer quantum Hall states are studied on thin cylinders. In this limit, charge density wave patterns emerge that are characteristic of the underlying quantum Hall state. The general patterns are worked out from a variant of the plasma analogy. Torus degeneracies are recovered, and for some important special cases a connection to well-known spin chain physics is made. By including interlayer tunneling, we also work out the critical behavior of a possible phase transition between the $(331)$ state and the non-abelian Moore-Read state in the thin cylinder limit.
description: published version
title: Dagstuhl Reports, Table of Contents, Volume 10, Issue 3, 2020
Creators: name: Schloss Dagstuhl – Leibniz-Zentrum für Informatik
Publisher: name: Schloss Dagstuhl – Leibniz-Zentrum für Informatik
Year: 2020
Subjects: subject: Table of Contents
subject: Frontmatter

description: Dagstuhl Reports, Table of Contents, Volume 10, Issue 3, 2020
description: Dagstuhl Reports, Volume 10, Issue 3, pages i-ii
First detection of [CII]158um at high redshift: vigorous star formation in the early universe
Creators: name: Maiolino, R.
name: Cox, P.
name: Caselli, P.
name: Beelen, A.
name: Bertoldi, F.
name: Carilli, C. L.
name: Kaufman, M. J.
name: Menten, K. M.
name: Nagao, T.
name: Omont, A.
name: Weiss, A.
name: Walmsley, C. M.
name: Walter, F.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report the detection of the 2P_3/2 -> 2P_1/2 fine-structure line of C+ at 157.74 micron in SDSSJ114816.64+525150.3 (hereafter J1148+5251), the most distant known quasar, at z=6.42, using the IRAM 30-meter telescope. This is the first detection of the [CII] line at high redshift, and also the first detection in a Hyperluminous Infrared Galaxy (L_FIR > 10^13 Lsun). The [CII] line is detected at a significance level of 8 sigma and has a luminosity of 4.4 x 10^9 Lsun. The L_[CII]/L_FIR ratio is 2 x 10^-4, about an order of magnitude smaller than observed in local normal galaxies and similar to the ratio observed in local Ultraluminous Infrared Galaxies. The [CII] line luminosity indicates that the host galaxy of this quasar is undergoing an intense burst of star formation with an estimated rate of ~3000 Msun/yr. The detection of C+ in SDSS J1148+5251 suggests a significant enrichment of metals at z ~ 6 (age of the universe ~870 Myr), although the data are consistent with a reduced carbon to oxygen ratio as expected from chemical evolutionary models of the early phases of galaxy formation.
description: 5 pages, 2 figures, accepted by A&A Letters
Development of a computer assisted planning and monitoring framework for the milling process
Creators: name: Yeung, Fu-Wing Raymond
Publisher: name: University of British Columbia
Year: 2009

description: The objective of this work is to examine new strategies to improve the quality of the machining operation during its preprocessing and real time stages. In particular, an integrated CAD/CAPP/CAM system and a distributed process monitoring system are developed. In the preprocessing stage, the integrated CAD/CAPP/CAM system attempts to apply the most economical cutting conditions to practical 2½-D milling operations; the approach retains all advantages of both APT NC programming and interactive, easy-to-use 3-D part modeling systems. In the real time stage, the distributed process monitoring system takes advantage of the existing networking and sensor technologies to provide real time machining process information. The information is made available to on-site machine operators and also to off-site manufacturing and production engineers who can use the information to "virtually" supervise the progress of the operations. The work presented in this thesis represents another step towards the realization of the Computer Integrated Manufacturing concept in a production environment.
The Half-Full Landau Level
Creators: name: Halperin, Bertrand I.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: At even-denominator Landau level filling fractions, such as $ν=1/2$, the ground state, in most cases, has no energy gap, and there is no quantized plateau in the Hall conductance. Nevertheless, the states exhibit non-trivial low-energy phenomena. Open questions concerning the proper description of these systems have attracted renewed attention during the last few years. Issues at $ν=1/2$ include consequences of particle-hole symmetry, which should be present for a spin-aligned system in the limit where one can neglect mixing between Landau levels. Other issues concern questions of anisotropy and geometry, properties at non-zero temperature, and effects of relatively strong disorder. In cases where one does find a gapped even-denominator quantized Hall state, such as $ν=5/2$ in GaAs structures, major questions have arisen about the nature of the quantum state, which will be discussed briefly in this chapter. The chapter will also discuss phenomena that can occur in a two-component system near half filling, i.e., when the total filling factor $ν_{\rm{tot}} $ is close to 1.
description: Chapter published in "Fractional Quantum Hall Effects: New Developments," edited by B. I. Halperin and J. K. Jain, World Scientific Publishing Co., 2020
Shot noise reduction in quantum wires with "0.7 structure"
Creators: name: Ramsak, A.
name: Jefferson, J. H.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Shot noise reduction in quantum wires is interpreted within the model for the ''0.7 structure'' in the conductance of near perfect quantum wires [T. Rejec, A. Ramsak, and J.H. Jefferson, Phys. Rev. B 62, 12985 (2000)]. It is shown how the Fano factor structure is related to the specific structure of the conductance as a consequence of the singlet--triplet nature of the resonances with the probability ratio 1:3. An additional feature in the Fano factor, related to the ''0.25 structure'' in conductance, is predicted.
description: minor changes; to appear in Phys. Rev. B, Rapid. Comm. (2005)
Stokes phenomenon and gravitational particle production -- How to evaluate it in practice
Creators: name: Hashiba, Soichiro
name: Yamada, Yusuke
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We revisit gravitational particle production from the Stokes phenomenon viewpoint, which helps us make a systematic way to understand asymptotic behavior of mode functions in time-dependent background. One of our purposes of this work is to make the method more practical for evaluation of non-perturbative particle production rate. In particular, with several examples of time-dependent backgrounds, we introduce some approximation methods that make the analysis more practical. Specifically, we consider particle production in simple expanding backgrounds, preheating after $R^2$ inflation, and a transition model with smoothly changing mass. As we find several technical issues in analyzing the Stokes phenomenon of each example, we discuss how to simplify the problems while showing the accuracy of analytic estimation under the approximations we make.
description: 23 + 18 pages, 13 + 7 figures, [v2] Minor revision
title: Dagstuhl Reports, Table of Contents, Volume 10, Issue 4, 2020
Creators: name: Schloss Dagstuhl – Leibniz-Zentrum für Informatik
Publisher: name: Schloss Dagstuhl – Leibniz-Zentrum für Informatik
Year: 2021
Subjects: subject: Table of Contents
subject: Frontmatter

description: Dagstuhl Reports, Table of Contents, Volume 10, Issue 4, 2020
description: Dagstuhl Reports, Volume 10, Issue 4, pages i-ii
9~GHz measurement of squeezed light by interfacing silicon photonics and integrated electronics
Creators: name: Tasker, Joel F.
name: Frazer, Jonathan
name: Ferranti, Giacomo
name: Allen, Euan J.
name: Brunel, Léandre F.
name: Tanzilli, Sébastien
name: D'Auria, Virginia
name: Matthews, Jonathan C. F.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Photonic quantum technology can be enhanced by monolithic fabrication of both the underpinning quantum hardware and the corresponding electronics for classical readout and control. Together, this enables miniaturisation and mass-manufacture of small quantum devices---such as quantum communication nodes, quantum sensors and sources of randomness---and promises the precision and scale of fabrication required to assemble useful quantum computers. Here we combine CMOS compatible silicon and germanium-on-silicon nano-photonics with silicon-germanium integrated amplification electronics to improve performance of on-chip homodyne detection of quantum light. We observe a 3 dB bandwidth of 1.7 GHz, shot-noise limited performance beyond 9 GHz and minaturise the required footprint to 0.84 mm. We use the device to observe quantum squeezed light, from 100 MHz to 9 GHz, generated in a lithium niobate waveguide. This demonstrates that an all-integrated approach yields faster homodyne detectors for quantum technology than has been achieved to-date and opens the way to full-stack integration of photonic quantum devices.
description: Nat. Photonics (2020)
title: Dagstuhl Reports, Table of Contents, Volume 10, Issue 5, 2020
Creators: name: Schloss Dagstuhl – Leibniz-Zentrum für Informatik
Publisher: name: Schloss Dagstuhl – Leibniz-Zentrum für Informatik
Year: 2021
Subjects: subject: Table of Contents
subject: Frontmatter

description: Dagstuhl Reports, Table of Contents, Volume 10, Issue 5, 2020
description: DagRep, Volume 10, Issue 5, pages i-ii
Bender, Ross T. (hrsg.): Baptism, peace and the state in the Reformed and Mennonite traditions
Creators: name: Burkart, Rainer W.
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 42 Nr. 3 (1993): Ökumenische Rundschau, Band 42, Heft 3
Galaxy orbits and the intracluster gas temperature in clusters
Creators: name: Benatov, Latchezar
name: Rines, Ken
name: Natarajan, Priyamvada
name: Kravtsov, Andrey
name: Nagai, Daisuke
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In this paper we examine how well galaxies and intra-cluster gas trace the gravitational potential of clusters. Utilizing mass profiles derived from gravitational lensing and X-ray observations, coupled with measured galaxy velocities, we solve for the velocity anisotropy parameter using the anisotropic Jeans equation. This is done for five clusters, three at low redshift: A2199, A496 and A576 and two at high redshifts: A2390 and MS1358. With X-ray temperature profiles obtained from Chandra and ASCA/ROSAT data, we estimate the ratio of energy in the galaxies compared to the X-ray gas. We find that none of these clusters is strictly in hydro-static equilibrium. We compare the properties of our sample with clusters that form in high-resolution cosmological N-body simulations that include baryonic physics. Simulations and data show considerable scatter both these profiles. We demonstrate the future feasibility and potential for directly comparing the orbital structure of clusters inferred from multi-wavelength observations with high resolution simulated clusters.
description: 9 pages, 6 figures, accepted for publication in MNRAS