cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Multifractal analysis for quotients of Birkhoff sums for countable Markov maps
Creators: name: Iommi, Godofredo
name: Jordan, Thomas
Publisher: name: arXiv
Year: 2013
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: This paper is devoted to study multifractal analysis of quotients of Birkhoff averages for countable Markov maps. We prove a variational principle for the Hausdorff dimension of the level sets. Under certain assumptions we are able to show that the spectrum varies analytically in parts of its domain. We apply our results to show that the Birkhoff spectrum for the Manneville-Pomeau map can be discontinuous, showing the remarkable differences with the uniformly hyperbolic setting. We also obtain results describing the Birkhoff spectrum of suspension flows. Examples involving continued fractions are also given.
description: New version, now with 28 papers. Much more detail is now given in section 4. We've also corrected a few typos and added some additional explanation to some of the proofs (e.g. prop 6.1)
PDFchem: A new fast method to determine ISM properties and infer environmental parameters using probability distributions
Creators: name: Bisbas, Thomas G.
name: van Dishoeck, Ewine F.
name: Hu, Chia-Yu
name: Schruba, Andreas
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Determining the atomic and molecular content of the interstellar medium (ISM) as a function of environmental parameters is of fundamental importance to understand the star-formation process across the epochs. Although there exist various three-dimensional hydro-chemical codes modelling the ISM at different scales and redshifts, they are computationally expensive and inefficient for studies over a large parameter space. Building on our earlier approach, we present PDFchem, a novel algorithm that models the cold ISM at moderate and large scales using functions connecting the quantities of the local ($A_{\rm V,eff}$) and the observed ($A_{\rm V,obs}$) visual extinctions, and the local number density, $n_{\rm H}$, with probability density functions (PDF) of $A_{\rm V,obs}$ on cloud scales typically tens-to-hundreds of pc as an input. For any given $A_{\rm V,obs}$-PDF, sampled with thousands of clouds, the algorithm instantly computes the average abundances of the most important species (HI, H$_2$, CII, CI, CO, OH, OH$^+$, H$_2$O$^+$, CH, HCO$^+$) and performs radiative transfer calculations to estimate the average emission of the most commonly observed lines ([CII]~$158μ$m, both [CI] fine-structure lines and the first five rotational transitions of $^{12}$CO). We examine two $A_{\rm V,obs}$-PDFs corresponding to a non star-forming and a star-forming ISM region, under a variety of environmental parameters combinations. These cover FUV intensities in the range of $χ/χ_0=10^{-1}-10^3$, cosmic-ray ionization rates in the range of $ζ_{\rm CR}=10^{-17}-10^{-13}\,{\rm s}^{-1}$ and metallicities in the range of $Z=0.1-2\,{\rm Z}_{\odot}$. PDFchem is fast, easy to use, reproduces the PDR quantities of the time-consuming hydrodynamical models and can be used directly with observed data to understand the evolution of the cold ISM chemistry.
description: 33 pages, 27 figures. Accepted in MNRAS. The algorithm can be found in: https://github.com/tbisbas/PDFchem. Comments welcome!
Geodetic Graphs Homeomorphic to a Given Geodetic Graph
Creators: name: Frasser, Carlos E.
name: Vostrov, George N.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Discrete Mathematics (cs.DM)
subject: Combinatorics (math.CO)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: This paper describes a new approach to the problem of generating the class of all geodetic graphs homeomorphic to a given geodetic one. An algorithmic procedure is elaborated to carry out a systematic finding of such a class of graphs. As a result, the enumeration of the class of geodetic graphs homeomorphic to certain Moore graphs has been performed.
description: 28 pages, 8 Figures
Power Expenses of Cotton Gins by Types of Power -- Arkansas, Oklahoma, and Texas
Creators: name: Campbell, John D.
name: Campbell, John D.
Publisher: name: Unknown
Year: 1962
Subjects: Crop Production/Industries
Research and Development/Tech Change/Emerging Technologies
Resource /Energy Economics and Policy

description: Excerpts from the report: Cotton ginners competing with each other and using equal amounts of power sometimes have differences of over $1 a bale in power expenses. Such differences are often caused by types of power used or by differences in rates paid for electricity. Such differences equal a large part of the net benefits realized from operating cooperative gins or a large part of the net returns made on investments in other gins. The purposes of this study on gin power expenses were: (1) to determine and compare expenses for equal amounts of power from different sources and types; (2) to provide information that cooperative and other gin owners could use to aid them in selecting a type of power or in changing to less costly sources or types of power; and (3) to determine other ways by which power costs could be reduced.
Semileptonic decays of doubly charmed baryons with bag model
Creators: name: Geng, Chao-Qiang
name: Liu, Chia-Wei
name: Zhou, Aowen
name: Yu, Xiao
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We study the semileptonic decays of $B_{cc}$ ${\rightarrow}$ $B_c\ell^+ν_\ell$ with the bag model, where $\ell$ = $(e, μ)$, $B_{cc}$ = $(Ξ_{cc}^{++}$, $Ξ_{cc}^+$, $Ω_{cc}^+$), and $ B_c$ are the singly charmed baryons with $J^P= 1/2^+$. We obtain the decay widths of $Γ(Ξ_{cc}^{++}{\rightarrow}Ξ_c^+e^+ν_e, Ξ_c^{\prime+}e^+ν_e, Λ_c^+e^+ν_e, Ω_c^+ e^+ν_e) =(5.1\pm 0.1 , 11\pm 1, 0.34\pm 0.06, 0.76\pm 0.06)\times 10^{-14}$~GeV, $Γ(Ξ_{cc}^+\rightarrow Ξ_c^0e^+ν_e, Ξ_c^{\prime0}e^+ν_e , Σ_c^0e^+ν_e) = (5.1\pm 0.6, 11\pm 1, 1.5\pm 0.1) \times 10^{-14}$~GeV, and $Γ(Ω_{cc}^+\rightarrow Ω_c^0 e^+ν_e, Ξ_c^0e^+ν_e , Ξ_c^{\prime0} e^+ν_e) = (22\pm 2, 0.32 \pm 0.04, 0.77\pm 0.06)\times 10^{-14}$~GeV. We also get that $Γ$($B_{cc}$ ${\rightarrow}$ $B_cμ^+ν_μ$)/$Γ$($B_{cc}$ ${\rightarrow}$ $B_ce^+ν_e$) = $0.97\sim 1.00$. In addition, we discuss the $SU(3)$ flavor breaking effects, classified into three aspects: phase space differences, spectator quarks, and overlappings of the transited quarks. In particular, we show that the breaking effects are dominated by the phase space differences, which can be as large as 25\%. Explicitly, we find that $Γ(Ξ_{cc}^{++} \to Λ_c ^+ e^+ ν_e) V_{cs}^2/Γ(Ξ_{cc}^{++} \to Ξ_c ^+ e^+ ν_e )V_{cd}^2 = 1.24$, which is expected as $1$ under the exact $SU(3)$ flavor symmetry.
description: 16 pages, 5 figures
Pointed Hopf algebras of dimension $p^2q$ in characteristic $p$
Creators: name: Xiong, Rongchuan
Publisher: name: arXiv
Year: 2017
Subjects: subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics

description: Let $\mathds{k}$ be an algebraically closed field of characteristic $p$. We give the complete classification of pointed Hopf algebras over $\mathds{k}$ of dimension $p^2q$ for a prime number $q$. The result shows that there are finitely many isomorphism classes, including 10 classes that are not generated by group-like elements and skew-primitive elements. In particular, there are many new examples of finite-dimensional pointed Hopf algebras.
Unified Treatment for Scattering, Absorption, and Photoluminescence of coupled Metallic Nanoparticles with Vertical Polarized Excitation
Creators: name: Cheng, Yuqing
name: Sun, Mengtao
Publisher: name: arXiv
Year: 2022
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Optical properties of coupled metallic particles (MNPs) have been widely reported due to their unique characteristics such as peak shift/splitting of the coupling spectra and electromagnetic enhancement at sub-wavelength scale, etc. In a previous work, we have investigated the coupling spectra of two coupled MNPs with parallel polarized excitation. In this study, we investigate the vertical polarization case in detail. Different from the parallel one, the vertical one has its unique properties: (a) three coupling coefficients; (b) positive coupling terms in the coupling equations; (c) blue-shifts of the peaks with the increasing coupling strength for identical MNPs spectra, including scattering, absorption, and photoluminescence. Comparison with published experimental results shows the validity of this model. This work provides a deeper understanding on the optical properties of coupled MNPs and is beneficial to relevant applications.
description: 7 pages, 5 figures
Deep Herschel observations of the 2Jy sample: assessing the non-thermal and AGN contributions to the far-IR continuum
Creators: name: Dicken, D.
name: Tadhunter, C. N.
name: Nesvadba, N. P. H.
name: Bernhard, E.
name: Könyves, V.
name: Morganti, R.
name: Almeida, C. Ramos
name: Oosterloo, T.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The far-IR/sub-mm wavelength range contains a wealth of diagnostic information that is important for understanding the role of radio AGN in galaxy evolution. Here we present the results of Herschel PACS and SPIRE observations of a complete sample of 46 powerful 2Jy radio AGN at intermediate redshifts (0.05 < z < 0.7), which represent the deepest pointed observations of a major sample of radio AGN undertaken by Herschel. In order to assess the importance of non-thermal synchrotron emission at far-IR wavelengths, we also present new APEX sub-mm and ALMA mm data. We find that the overall incidence of non-thermal contamination in the PACS bands ($<$200$μ$m) is in the range 28 -- 43%; however, this rises to 30 -- 72% for wavelengths ($> $200$μ$m) sampled by the SPIRE instrument. Non-thermal contamination is strongest in objects with compact CSS/GPS or extended FRI radio morphologies, and in those with type 1 optical spectra. Considering thermal dust emission, we find strong correlations between the 100 and 160$μ$m monochromatic luminosities and AGN power indicators, providing further evidence that radiation from the AGN may be an important heating source for the far-IR emitting dust. Clearly, AGN contamination -- whether by the direct emission from synchrotron-emitting lobes and cores, or via radiative heating of the cool dust -- needs to be carefully considered when using the far-IR continuum to measure the star formation rates in the host galaxies of radio AGN.
description: 22 pages, 8 figures, Accepted in MNRAS
Dynamic and electrostatic modeling for a piezoelectric smart composite and related stabilization results
Creators: name: Ozer, Ahmet Ozkan
Publisher: name: arXiv
Year: 2017
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35Q60, 35Q93, 93D15, 74F15, 93C20

description: A cantilevered piezoelectric smart composite beam, consisting of perfectly bonded elastic, viscoelastic and piezoelectric layers, is considered. The piezoelectric layer is actuated by a voltage source. Both fully dynamic and electrostatic approaches, based on Maxwell's equations, are used to model the piezoelectric layer. We obtain (i) fully-dynamic and electrostatic Rao-Nakra type models by assuming that the viscoelastic layer has a negligible weight and stiffness, (ii) fully-dynamic and electrostatic Mead-Marcus type models by neglecting the in-plane and rotational inertia terms. Each model is a perturbation of the corresponding classical smart composite beam model. These models are written in the state-space form, the existence and uniqueness of solutions are obtained in appropriate Hilbert spaces. Next, the stabilization problem for each closed-loop system, with a thorough analysis, is investigated for the natural $B^*-$type state feedback controllers. The fully dynamic Rao-Nakra model with four state feedback controllers is shown to be not asymptotically stable for certain choices of material parameters whereas the electrostatic model is exponentially stable with only three state feedback controllers (by the spectral multipliers method). Similarly, the fully dynamic Mead-Marcus model lacks of asymptotic stability for certain solutions whereas the electrostatic model is exponentially stable by only one state feedback controller.stable by one feedback controller applied to the bending moment only.
description: 30 pages, 2 figures, in press, 2018
Rough Potential Recovery in the Plane
Creators: name: Astala, Kari
name: Faraco, Daniel
name: Rogers, Keith M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35P25, 45Q05

description: We reconstruct compactly supported potentials with only half a derivative in $L^2$ from the scattering amplitude at a fixed energy. For this we draw a connection between the recently introduced method of Bukhgeim, which uniquely determined the potential from the Dirichlet-to-Neumann map, and a question of Carleson regarding the convergence to initial data of solutions to time-dependent Schrödinger equations. We also provide examples of compactly supported potentials, with $s$ derivatives in $L^2$ for any $s<1/2$, which cannot be recovered by these means. Thus the recovery method has a different threshold in terms of regularity than the corresponding uniqueness result.
description: 24 pages
Single band VLBI absolute astrometry
Creators: name: Petrov, Leonid
Publisher: name: arXiv
Year: 2022
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: The ionospheric path delay impacts single-band very long baseline interferometry (VLBI) group delays, which limits their applicability for absolute astrometry. I consider two important cases: when observations are made simultaneously at two bands, but delays at only one band are available for a subset of observations and when observations are made at one band by design. I developed optimal procedures of data analysis for both cases using Global Navigation Satellite System (GNSS) ionosphere maps, provided a stochastic model that describes ionospheric errors, and evaluated their impact on source position estimates. I demonstrate that the stochastic model is accurate at a level of 15%. I found that using GNSS ionospheric maps as is introduces serious biases in estimates of declinations and I developed the procedure that almost eliminates them. I found serendipitously that GNSS ionospheric maps have multiplicative errors and have to be scaled by 0.85 in order to mitigate the declination bias. A similar scale factor was found in comparison of the vertical total electron contents from satellite altimetry against GNSS ionospheric maps. I favor interpretation of this scaling factor as a manifestation of the inadequacy of the thin shell model of the ionosphere. I showed that we are able to model the ionospheric path delay to the extent that no noticeable systematic errors emerge and we are able to adequately assess the contribution of the ionosphere-driven random errors on source positions. This makes single-band absolute astrometry a viable option that can be used for source position determination.
description: Submitted to the Astronomical Journal; comments from the 1st round of review are addressed
“Liberté, Egalité, Fraternité,” Laïcité? An Analysis of France’s 2004 “Veil Law” and its Effect on French Muslims
Creators: name: Dos Santos Quaresma, Daniela
Publisher: name: Columbia University
Year: 2017
Subjects: Muslims--Legal status, laws, etc.
Hijab (Islamic clothing)
Laicism
Muslim women--Social conditions
Church and state

description: This thesis aims to examine how the March 15th, 2004 law prohibiting all “ostentatious” religious signs and symbols in public schools in France, despite targeting all religious outfits in its labeling, might lead to a significant negative impact on French Muslim populations. This thesis reaches mixed conclusions. This research finds that there was initial extensive media and political focus on the headscarf brought a strongly negative image of the veil, which constituted a trigger for the establishment of the law. I also discuss the ambiguity of the concept of laïcité allowed for an application of the law that is equal yet “indirectly” unfair to French Muslim schoolgirls, and even affecting Muslim women wearing the veil outside of schools. Finally, I find that the subjectivity of the concept of “conspicuousness” on which the 2004 law relies allows for unfairness of application. It does not constitute decisive evidence to draw an answer about whether the law directly made Muslims worse off and more likely to be discriminated, yet this same evidence appears to point in that direction. In my conclusion, I draw out policy recommendations based on the issues related with media coverage and the differences in interpretation of the concept of laïcité.
Fan-type degree condition restricted to triples of induced subgraphs ensuring Hamiltonicity
Creators: name: Ning, Bo
Publisher: name: arXiv
Year: 2013
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05C38, 05C45

description: In 1984, Fan gave a sufficient condition involving maximum degree of every pair of vertices at distance two for a graph to be Hamiltonian. Motivated by Fan's result, we say that an induced subgraph $H$ of a graph $G$ is $f$-heavy if for every pair of vertices $u,v\in V(H)$, $d_{H}(u,v)=2$ implies that $\max\{d(u),d(v)\}\geq n/2$. For a given graph $R$, $G$ is called $R$-$f$-heavy if every induced subgraph of $G$ isomorphic to $R$ is $f$-heavy. For a family $\mathcal{R}$ of graphs, $G$ is $\mathcal{R}$-$f$-\emph{heavy} if $G$ is $R$-$f$-heavy for every $R\in \mathcal{R}$. In this note we show that every 2-connected graph $G$ has a Hamilton cycle if $G$ is $\{K_{1,3},P_7,D\}$-$f$-heavy or $\{K_{1,3},P_7,H\}$-$f$-heavy, where $D$ is the deer and $H$ is the hourglass. Our result is a common generalization of previous theorems of Broersma et al. and Fan on Hamiltonicity of 2-connected graphs.
description: 8 pages, 1 figure
Modellbasierte Clusteranalyse römischer Ziegel aus Worms und Rheinzabern
Creators: name: Mucha, Hans-Joachim
name: Bartel, Hans-Georg
name: Dolata, Jens
Publisher: name: DGUF e.V.
Year: 2017

description: [nicht vorhanden / not available]
description: Archäologische Informationen, Bd. 26, Nr. 2 (2003): Archäologische Informationen
Optimized Spectral Energy Distribution for Seyfert Galaxies
Creators: name: Binette, Luc
name: Krongold, Yair
name: Haro-Corzo, Sinhue A. R.
name: Humphrey, Andrew
name: Morais, Sandy G.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The temperature predicted by photoionization models for the Narrow Line Region of Seyfert 2 galaxies is lower than the value inferred from the observed [O III] λ4363A/λ5007A line ratio. We explore the possibility of considering a harder ionizing continuum than typically assumed. The spectral ionizing energy distribution, which can generate the observed λ4363A/λ5007A ratio, is characterized by a secondary continuum peak at 200 eV.
description: 17 pages, 4 figures, accepted for publication in Revista Mexicana de Astronom\'ia y Astrof\'isica
Predictors of Barriers to Medical Care Among People Living with HIV in New York City: Changes from 2002 to 2017
Creators: name: Zhao, Gagarin
Publisher: name: Columbia University
Year: 2020
Subjects: Biometry
Health services accessibility
HIV-positive persons
HIV-positive persons--Medical care
HIV-positive persons--Care

description: Background. Studies have shown that barriers to medical care remain a notable issue in the HIV epidemic. However, few researchers have examined how individual characteristics such as race, gender, poverty, mental health, physical health, and age affect different types of barriers to long-term medical care. Aims. This study addressed these limitations by analyzing data from a prospective cohort of HIV-positive individuals in New York City. Method. The sample consisted of HIV-positive individuals in New York City (n = 1329). Self-reported experience of barriers to medical care were obtained. Three non-overlapping cohorts recruited approximately four years apart between 2002 and 2017 were used: 2002-04, 2008-11, and 2015-17. Data was examined using a repeated cross-section design with multivariable logistic regression. Results. There was fluctuation overtime in participant report of different types of barriers with indication of improvements over time. Gender and mental health component score (MCS) were found to be the most strongly associated with barriers to medical care. Between 2002-04 and 2008-11, low mental health functioning (MCS) became less of a barrier to care; one point lower on the MCS scale is associated with lower odds of reporting barriers (AOR: 0.969 deceased to 0.915). Males had comparatively lower odds of reporting barriers between 2002-04, but on average had more than twice the odds of experiencing barriers compared with women in 2008-2011 (AOR: 0.665 to 2.167). Conclusion. The final model showed inconclusive but encouraging signs that there have been reductions in barriers to HIV medical care over the past 15 years.
[OI] 6300Å$\,$ emission as a probe of external photoevaporation of protoplanetary discs
Creators: name: Ballabio, Giulia
name: Haworth, Thomas J.
name: Henney, W. J.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We study the utility of the [OI] 6300$\mathring{\mathrm A}$ forbidden line for identifying and interpreting externally driven photoevaporative winds in different environments and at a range of distances. Thermally excited [OI] 6300$\mathring{\mathrm A}$ is a well known tracer of inner disc winds, so any external contribution needs to be distinguishable. In external winds, the line is not thermally excited and instead results from the dissociation of OH and we study how the line luminosity resulting from that process scales with the disc/environmental parameters. We find that the line luminosity increases dramatically with FUV radiation field strength above around 5000 G$_0$. The predicted luminosities from our models are consistent with measurements of the line luminosity of proplyds in the Orion Nebula Cluster. The high luminosity in strong UV environments alone may act as a diagnostic, but a rise in the [OI]-to-accretion luminosity ratio is predicted to better separate the two contributions. This could provide a means of identifying external photoevaporation in distant clusters where the proplyd morphology of evaporating discs cannot be spatially resolved.
description: 13 pages, 8 figures
Stability and Bayesian Consistency in Two-Sided Markets
Creators: name: Liu, Qingmin
Publisher: name: Columbia University
Year: 2020
Subjects: Economics
Multi-sided platform businesses
Bayesian statistical decision theory

description: We propose a criterion of stability for two-sided markets with asymmetric information. A central idea is to formulate matching functions, off-path beliefs conditional on counterfactual pairwise deviations, and on-path beliefs in the absence of such deviations. A matching-belief configuration is stable if the matching is individually rational with respect to the system of on-path beliefs and is not blocked with respect to the system of off-path beliefs. The formulation provides a language for assessing matching outcomes with respect to their supporting beliefs and opens the door to further belief-based refinements. The main refinement analyzed in the paper requires the Bayesian consistency of on-path and off-path beliefs with prior beliefs. We also define concepts of Bayesian efficiency, the rational expectations competitive equilibrium, and the core. Their contrast with pairwise stability manifests the role of information asymmetry in matching formation.
Predicting Quality of Stored Cottonseed Oils
Creators: name: Baumann, Lewis A.
name: Baumann, Lewis A.
Publisher: name: Unknown
Year: 1962
Subjects: subject: Crop Production/Industries
subject: Marketing
subject: FOS: Economics and business
subject: Research and Development/Tech Change/Emerging Technologies

description: Excerpts from the report: The vegetable-oil industry rarely stores refined cottonseed oils beyond the season's requirements. Crude cottonseed oils are usually refined in a matter of days after extraction from seed to prevent ensuing quality deterioration. Information on quality changes during longer storage of refined and crude cottonseed oils is important to the industry and to the Government. If oils could be stored longer without substantial change in quality or value, more orderly and efficient marketing would be possible. Furthermore, better knowledge as to the effect of storage on oils would contribute to the production of better quality oils. Primary objectives of this study were: 1. Determination of the extent of changes in quality and value of crude and refined cottonseed oils stored under commercial conditions for longer periods than are customary in industry; 2. evaluation of present industrial methods of measuring the quality of cottonseed oils; and 3. determination of the best methods as to sizes, types, and locations of field tanks for storing oils in order to maintain quality.
Wave-particle duality: an information-based approach
Creators: name: Angelo, R. M.
name: Ribeiro, A. D.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Recently, Bohr's complementarity principle was assessed in setups involving delayed choices. These works argued in favor of a reformulation of the aforementioned principle so as to account for situations in which a quantum system would simultaneously behave as wave and particle. Here we defend a framework that, supported by well-known experimental results and consistent with the decoherence paradigm, allows us to interpret complementarity in terms of correlations between the system and an {\em informer}. Our proposal offers formal definition and operational interpretation for the dual behavior in terms of both nonlocal resources and the couple work-information. Most importantly, our results provide a generalized information-based trade-off for the wave-particle duality and a causal interpretation for delayed-choice experiments.
description: 14 pages, title changed, text expanded, to appear in Found. Phys
Precise predictions for same-sign W-boson scattering at the LHC
Creators: name: Ballestrero, Alessandro
name: Biedermann, Benedikt
name: Brass, Simon
name: Denner, Ansgar
name: Dittmaier, Stefan
name: Frederix, Rikkert
name: Govoni, Pietro
name: Grossi, Michele
name: Jäger, Barbara
name: Karlberg, Alexander
name: Maina, Ezio
name: Pellen, Mathieu
name: Pelliccioli, Giovanni
name: Plätzer, Simon
name: Rauch, Michael
name: Rebuzzi, Daniela
name: Reuter, Jürgen
name: Rothe, Vincent
name: Schwan, Christopher
name: Shao, Hua-Sheng
name: Stienemeier, Pascal
name: Zanderighi, Giulia
name: Zaro, Marco
name: Zeppenfeld, Dieter
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Vector-boson scattering processes are of great importance for the current run-II and future runs of the Large Hadron Collider. The presence of triple and quartic gauge couplings in the process gives access to the gauge sector of the Standard Model (SM) and possible new-physics contributions there. To test any new-physics hypothesis, sound knowledge of the SM contributions is necessary, with a precision which at least matches the experimental uncertainties of existing and forthcoming measurements. In this article we present a detailed study of the vector-boson scattering process with two positively-charged leptons and missing transverse momentum in the final state. In particular, we first carry out a systematic comparison of the various approximations that are usually performed for this kind of process against the complete calculation, at LO and NLO QCD accuracy. Such a study is performed both in the usual fiducial region used by experimental collaborations and in a more inclusive phase space, where the differences among the various approximations lead to more sizeable effects. Afterwards, we turn to predictions matched to parton showers, at LO and NLO: we show that on the one hand, the inclusion of NLO QCD corrections leads to more stable predictions, but on the other hand the details of the matching and of the parton-shower programs cause differences which are considerably larger than those observed at fixed order, even in the experimental fiducial region. We conclude with recommendations for experimental studies of vector-boson scattering processes.
description: Data and input files are available at: https://github.com/VBSCanAction/VBSComparison/ . 28 pages including figures and references. Matches the journal version
A search for transit timing variations within the exomoon corridor using Kepler data
Creators: name: Kipping, David
name: Yahalomi, Daniel A.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: An exomoon will produce transit timing variations (TTVs) upon the parent planet and their undersampled nature causes half of such TTVs to manifest within a frequency range of 2 to 4 cycles, irrespective of exomoon demographics. Here, we search through published Kepler TTV data for such signals, applying a battery of significance and robustness checks, plus independent light curve analyses for candidate signals. Using the original transit times, we identify 11 (ostensibly) single-planets with a robust, significant and fast ($P_{TTV}<4$ cycles) TTV signal. However, of these, only 5 are recovered in an independent analysis of the original photometry, underscoring the importance of such checks. The surviving signals are subjected to an additional trifecta of statistical tests to ensure signal significance, predictive capability and consistency with an exomoon. KOI-3678.01, previously validated as Kepler-1513b, is the only case that passes every test, exhibiting a highly significant (>20 sigma) TTV signal with a periodicity, amplitude and shape consistent with that caused by an exomoon. Our analysis finds that this planet is $8.2_{-0.5}^{+0.7}$ $R_{\oplus}$ orbiting at $0.53_{-0.03}^{+0.04}$ AU around a late G-type dwarf. After forecasting the planetary mass, we expect it to be capable of maintaining at least a 0.3 $M_{\oplus}$ exomoon for 5 Gyr, and the TTV signal corresponds to a moon mass as low as 0.75 Lunar masses. We thus encourage follow-up observations and dynamical analysis of this unique signal, but caution skepticism until such data can be obtained.
description: Accepted to MNRAS. Code and posteriors available at https://github.com/CoolWorlds/fastTTVs
Restoring Unitarity in the q-Deformed World-Sheet S-Matrix
Creators: name: Hoare, Ben
name: Hollowood, Timothy J.
name: Miramontes, J. Luis
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The world-sheet S-matrix of the string in AdS5 x S5 has been shown to admit a q-deformation that relates it to the S-matrix of a generalization of the sine-Gordon theory, which arises as the Pohlmeyer reduction of the superstring. Whilst this is a fascinating development the resulting S-matrix is not explicitly unitary. The problem has been known for a long time in the context of S-matrices related to quantum groups. A braiding relation often called "unitarity" actually only corresponds to quantum field theory unitarity when the S-matrix is Hermitian analytic and quantum group S-matrices manifestly violate this. On the other hand, overall consistency of the S-matrix under the bootstrap requires that the deformation parameter is a root of unity and consequently one is forced to perform the "vertex" to IRF, or SOS, transformation on the states to truncate the spectrum consistently. In the IRF formulation unitarity is now manifest and the string S-matrix and the S-matrix of the generalised sine-Gordon theory are recovered in two different limits. In the latter case, expanding the Yang-Baxter equation we find that the tree-level S-matrix of the Pohlmeyer-reduced string should satisfy a modified classical Yang-Baxter equation explaining the apparent anomaly in the perturbative computation. We show that the IRF form of the S-matrix meshes perfectly with the bootstrap equations.
description: 52 pages, some additional comments and clarifications for the published version
Lower-dimensional Regge-Teitelboim gravity
Creators: name: Sheykin, A. A.
name: Grechko, A. A.
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study modified gravity theory known as Regge-Teitelboim approach, in which the gravity is represented by dynamics of a surface isometrically embedded in a flat bulk. We obtain some particular solutions of Regge-Teitelboim equations corresponding to a central symmetric vacuum 2+1-dimensional spacetime. In contrast with GR, this vacuum spacetime is not flat, so it is possible for the gravitational field to exist even without matter or cosmological constant.
description: 5 pages. Accepted for publication in Gravitation & Cosmology
An unsupervised and customizable misspelling generator for mining noisy health-related text sources
Creators: name: Sarker, Abeed
name: Gonzalez-Hernandez, Graciela
Publisher: name: arXiv
Year: 2018
Subjects: subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: In this paper, we present a customizable datacentric system that automatically generates common misspellings for complex health-related terms. The spelling variant generator relies on a dense vector model learned from large unlabeled text, which is used to find semantically close terms to the original/seed keyword, followed by the filtering of terms that are lexically dissimilar beyond a given threshold. The process is executed recursively, converging when no new terms similar (lexically and semantically) to the seed keyword are found. Weighting of intra-word character sequence similarities allows further problem-specific customization of the system. On a dataset prepared for this study, our system outperforms the current state-of-the-art for medication name variant generation with best F1-score of 0.69 and F1/4-score of 0.78. Extrinsic evaluation of the system on a set of cancer-related terms showed an increase of over 67% in retrieval rate from Twitter posts when the generated variants are included. Our proposed spelling variant generator has several advantages over the current state-of-the-art and other types of variant generators-(i) it is capable of filtering out lexically similar but semantically dissimilar terms, (ii) the number of variants generated is low as many low-frequency and ambiguous misspellings are filtered out, and (iii) the system is fully automatic, customizable and easily executable. While the base system is fully unsupervised, we show how supervision maybe employed to adjust weights for task-specific customization. The performance and significant relative simplicity of our proposed approach makes it a much needed misspelling generation resource for health-related text mining from noisy sources. The source code for the system has been made publicly available for research purposes.
Ein Drachenleuchter von Veit Stolz nach dem Entwurf Albrecht Dürers
Creators: name: Kohlhaussen, Heinrich
Publisher: name: Anzeiger des Germanischen Nationalmuseums
Year: 2017

description: Anzeiger des Germanischen Nationalmuseums, 1936-1939: Anzeiger des Germanischen Nationalmuseums
title: Χαρακτηρισμός και Μοντελοποίηση Τρανζίστορ Τύπου HV-LDMOSFET
title: Characterization and Modeling of HV-LDMOSFETs
Creators: name: Φουστερης Γεωργιος
Publisher: name: Technical University of Crete
Year: 2019

description: Οι διατάξεις HV-LDMOSFET προτείνονται για εφαρμογές με αντοχή σε σχετικά υψηλή τάση, όπως τα ηλεκτρονικά αυτοκινήτων, οθόνες, ενισχυτές RF κα. Αντικείμενο αυτής της διπλωματικής εργασίας είναι ο ηλεκτρικός χαρακτηρισμός και η συμπαγής μοντελοποίηση διατάξεων HV-LDMOSFET (High-Voltage Lateral Diffused MOSFET). Ο πειραματικός χαρακτηρισμός έγινε πάνω σε wafer στις εγκαταστάσεις του εργαστηρίου Ηλεκτρονικής του Πολυτεχνείου Κρήτης. Μελετήθηκαν τρανζίστορ HV-LDMOS 24V και 30V  καναλιού τύπου n και p, με έμφαση στην διαμόρφωση της απόδοσης συναρτήσει του μήκους καναλιού. Παρουσιάζονται οι τεχνικές εξαγωγής των παραμέτρων, οι μετρήσεις από διαφορετικά dies του wafer και οι μέσοι όροι των στοιχείων με επεξήγηση των φαινομένων που επικρατούν.
Η προσέγγιση της συμπαγούς μοντελοποίησης βασίστηκε σε μοντέλα MOSFET EKV 2.6 (low voltage part) και του JFET spectre (drift region), λόγω της ευρείας διαθεσιμότητας των μοντέλων. Το λογισμικό που χρησιμοποιήθηκε για τις μετρήσεις καθώς και την υλοποίηση της διαδικασίας της εξαγωγής των παραμέτρων είναι το IC-CAP της Keysight καθώς και ο προσομοιωτής Spectre της Cadence. Τα αποτελέσματα της μοντελοποίησης αξιολογούνται και προτείνονται μελλοντικές εργασίες.
Symmetry properties of natural frequency and mode shape sensitivities in symmetric structures
Creators: name: Bartilson, Daniel Thomas
name: Jang, Jinwoo
name: Smyth, Andrew W.
Publisher: name: Columbia University
Year: 2018
Subjects: Symmetry
Eigenvalues
Structural analysis (Engineering)
Finite element method--Models

description: When updating a finite element (FE) model to match the measured properties of its corresponding structure, the sensitivities of FE model outputs to parameter changes are of significant interest. These sensitivities form the core of sensitivity-based model updating algorithms, but they are also used for developing reduced parametrizations, such as in subset selection and clustering. In this work, the sensitivities of natural frequencies and mode shapes are studied for structures having at least one plane of reflectional symmetry. It is first shown that the mode shapes of these structures are either symmetric and anti-symmetric, which is used to prove that natural frequency sensitivities are equal for symmetric parameters. Conversely, mode shape sensitivities are shown to be unequal for symmetric parameters, as measured by cosine distance. These topics are explored with a small numerical example, where it is noted that mode shape sensitivities for symmetric parameters exhibit similar properties to asymmetric parameters.
On L2 modulus of continuity of Brownian local times and Riesz potentials
Creators: name: Deya, Aurélien
name: Nualart, David
name: Tindel, Samy
Publisher: name: arXiv
Year: 2013
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics

description: This article is concerned with modulus of continuity of Brownian local times. Specifically, we focus on 3 closely related problems: (a) Limit theorem for a Brownian modulus of continuity involving Riesz potentials, where the limit law is an intricate Gaussian mixture. (b) Central limit theorems for the projections of L2 modulus of continuity for a 1-dimensional Brownian motion. (c) Extension of the second result to a 2-dimensional Brownian motion. Our proofs rely on a combination of stochastic calculus and Malliavin calculus tools, plus a thorough analysis of singular integrals.
First spatially resolved Na I and He I transitions towards an MYSO. Finding new tracers for the gaseous star/disc interface
Creators: name: Koumpia, Evgenia
name: Koutoulaki, M.
name: de Wit, W. -J.
name: Oudmaijer, R. D.
name: Frost, A. J.
name: Lumsden, S. L.
name: Pittard, J. M.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: With steady observational advances, the formation of massive stars is being understood in more detail. Numerical models are converging on a scenario where accretion discs play a key role. Direct observational evidence of such discs at a few au scales is scarce, due to the rarity of such objects and the observational challenges, including the lack of adequate diagnostic lines in the near-IR. We present the analysis of K-band spectro-interferometric observations toward the Massive Young Stellar Object IRAS 13481-6124, which is known to host an accreting dusty disc. Using GRAVITY on the VLTI, we trace the crucial au-scales of the warm inner interface between the star and the accretion dusty disc. We detect and spatially resolve the Na I doublet and He I transitions towards an object of this class for the first time. The new observations in combination with our geometric models allowed us to probe the smallest au-scales of accretion/ejection around an MYSO. We find that Na I originates in the disc at smaller radii than the dust disc and is more compact than any of the other spatially resolved diagnostics (Br$γ$, He I, and CO). Our findings suggest that Na I can be a new powerful diagnostic line in tracing the warm star/disc accreting interface of forming (massive) stars, while the similarities between He I and Br$γ$ point towards an accretion/ejection origin of He I
description: Accepted for publication in MNRAS Letters; 5 pages, 3 Figures
How Close Dark Matter Halos and MOND Are to Each Other: Three-Dimensional Tests Based on Gaia DR2
Creators: name: Zhu, Yongda
name: Ma, Hai-Xia
name: Dong, Xiao-Bo
name: Huang, Yang
name: Mistele, Tobias
name: Peng, Bo
name: Long, Qian
name: Wang, Tianqi
name: Chang, Liang
name: Jin, Xi
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Aiming at discriminating different gravitational potential models of the Milky Way, we perform tests based on the kinematic data powered by the Gaia DR2 astrometry, over a large range of $(R,z)$ locations. Invoking the complete form of Jeans equations that admit three integrals of motion, we use the independent $R$- and $z$-directional equations as two discriminators ($T_R$ and $T_z$). We apply the formula for spatial distributions of radial and vertical velocity dispersions proposed by Binney et al., and successfully extend it to azimuthal components, $σ_θ(R,z)$ and $V_θ(R,z)$; the analytic form avoids the numerical artifacts caused by numerical differentiation in Jeans-equations calculation given the limited spatial resolutions of observations, and more importantly reduces the impact of kinematic substructures in the Galactic disk. It turns out that whereas the current kinematic data are able to reject Moffat's Modified Gravity (let alone the Newtonian baryon-only model), Milgrom's MOND is still not rejected. In fact, both the carefully calibrated fiducial model invoking a spherical dark matter (DM) halo and MOND are equally consistent with the data at almost all spatial locations (except that probably both have respective problems at low-$|z|$ locations), no matter which a tracer population or which a meaningful density profile is used. Because there is no free parameter at all in the quasi-linear MOND model we use, and the baryonic parameters are actually fine-tuned in the DM context, such an effective equivalence is surprising, and might be calling forth a transcending synthesis of the two paradigms.
description: 20 pages, 13 figures; accepted for publication in MNRAS
MOODLE TIZIMI VA UNING IMKONIYATLARI
Creators: name: Axmedova, Zulxumor
Publisher: name: Zenodo
Year: 2023

description: Jahon tajribasida oliy ta`limning muhim maqsadlaridan biri - bu talabalarni kasbiy rivojlantirish, ularning bilish mahoratlarini shakllantirish va olingan bilimi, ko'nikma, malaka va kompetentsiyalarini hayotga amaliy qo'llash texnologiyalari tatbiq etilgan. YUNESKO tomonidan qabul qilingan 2030 yilgacha «Butun hayot davomida sifatli ta`lim olishga imkoniyat yaratish» xalqaro ta`lim kontseptsiyasi  asosida ta`limning barcha bosqichlarini intensifikatsiyalash, modernizatsiyalash, axborot texnologiyalari yordamida bilimlar sifatini oshirish metod va usullarini takomillashtirish bo'yicha tizimli ishlar amalga oshirilmoqda.
The Role of Truck Brokers in the Movement of Exempt Agricultural Commodities
Creators: name: Hunter, John H.
name: Hunter, John H.
Publisher: name: Unknown
Year: 1962
Subjects: subject: Crop Production/Industries
subject: Livestock Production/Industries
subject: Marketing
subject: FOS: Economics and business

description: Excerpts from the report: Truck brokers of agricultural commodities exempt from regulation are the essential link between producers, truckers, and receivers, particularly for seasonally produced perishables. Truck brokers simply arrange transportation by truck for shippers or receivers of maturing perishables and other exempt commodities for movement to storage, processing points, and market areas, as contrasted to commodity brokers who arrange for the purchase and sales of commodities for a fee. The transportation system for exempt agricultural commodities depends on truck brokers to match shipments of perishable commodities as they mature in various producing areas with the available capacity of the exempt for-hire truckers and the market demands of processors and urban consumers. The coordination of producers, truckers, and brokers insures a reliable and efficient method of moving exempt agricultural commodities. This report presents information on truck broker operations. Most of the transportation arranged for by brokers is for commodities trucked in interstate commerce. The report explains in some detail the important part the broker plays in the truck movement of exempt agricultural commodities.
Nanoscale local modification of PMMA refractive index by tip-enhanced femtosecond pulsed laser irradiation
Creators: name: Tranca, Denis E.
name: Stanciu, Stefan G.
name: Hristu, Radu
name: Ionescu, Adrian M.
name: Stanciu, George A.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Investigation techniques based on tip-enhanced optical effects, capable to yield spatial resolutions down to nanometers level, have enabled a wide palette of important discoveries over the past twenty years. Recently, their underlying optical setups are beginning to emerge as useful tools to modify and manipulate matter with nanoscale spatial resolution. We try to contribute to these efforts by reporting a method that we found viable to modify the surface refractive index of polymethyl methacrylate (PMMA), an acrylic polymer material. The changes in the refractive index are accomplished by focusing a femtosecond pulsed near-infrared laser beam on the apex of a metalized nano-sized tip, traditionally used in scanning probe microscopy (SPM) applications. The adopted illumination strategy yields circular-shaped modifications of the refractive index occurring at the surface of the PMMA sample, exhibiting a lateral size <200 nm, under 790 nm illumination, representing a four-fold increase in precision compared to the current state-of-the-art. The light intensity enhancement effects taking place at the tip apex makes possible achieving refractive index changes at low laser pulse energies (<0.5 nJ), which represents two orders of magnitude advantage over the current state-of-the art. The presented nanoimprinting method is very flexible, as it can be used with different power levels and can potentially be operated with other materials. Besides enabling modifications of the refractive index with high lateral resolution, this method can pave the way towards other important applications such the fabrication of photonic crystal lattices or surface waveguides.