cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Estimating Jump Activity Using Multipower Variation
Creators: name: Kolokolov, Aleksey
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Physiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: Evolutionary Biology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: Science Policy

description: Realized multipower variation, originally introduced to eliminate jumps, can be extremely useful for inference in pure-jump models. This article shows how to build a simple and precise estimator of the jump activity index of a semimartingale observed at a high frequency by comparing different multipowers. The novel methodology allows to infer whether a discretely observed process contains a continuous martingale component. The empirical part of the article undertakes a nonparametric analysis of the jump activity of bitcoin and shows that bitcoin is a pure jump process with high jump activity, which is critically different from conventional currencies that include a Brownian motion component.
USING LAND AS A CONTROL VARIABLE IN DENSITY-DEPENDENT BIOECONOMIC MODELS
Creators: name: Alexander, Robert R.
name: Shields, David W.
name: Alexander, Robert R.
name: Shields, David W.
Publisher: name: Unknown
Year: 2002
Subjects: Land Economics/Use

description: The bioeconomic analysis of endangered species without consumptive values can be problematic when analysed with density-dependent models that assume a fixed environment size. Most bioeconomic models use harvest as a control variable, yet when modelling non-harvestable species, frequently the only variable under control of conservationists is the quantity of habitat to be made available. The authors explore the implications of this in a model developed to analyse the potential population recovery of New Zealand's yellow-eyed penguin. The penguin faces severe competition with man for the terrestrial resources required for breeding and has declined in population to perilously low levels. The model was developed to estimate the land use required for recovery and preservation of the species and to compare the results to current tourism-driven conservation efforts. It is demonstrated that land may serve as a useful control variable in bioeconomic models and that such a model may be useful for determining whether sufficient incentives exist to preserve a species. However, the model may generate less useful results for providing a specific estimate of the optimal allocation of land to such a species.
On the Design of Perceptual MPEG-Video Encryption Algorithms
Creators: name: Li, Shujun
name: Chen, Guanrong
name: Cheung, Albert
name: Bhargava, Bharat
name: Lo, Kwok-Tung
Publisher: name: arXiv
Year: 2005
Subjects: subject: Multimedia (cs.MM)
subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: In this paper, some existing perceptual encryption algorithms of MPEG videos are reviewed and some problems, especially security defects of two recently proposed MPEG-video perceptual encryption schemes, are pointed out. Then, a simpler and more effective design is suggested, which selectively encrypts fixed-length codewords (FLC) in MPEG-video bitstreams under the control of three perceptibility factors. The proposed design is actually an encryption configuration that can work with any stream cipher or block cipher. Compared with the previously-proposed schemes, the new design provides more useful features, such as strict size-preservation, on-the-fly encryption and multiple perceptibility, which make it possible to support more applications with different requirements. In addition, four different measures are suggested to provide better security against known/chosen-plaintext attacks.
description: 10 pages, 5 figures, IEEEtran.cls
Ultraprecise optical-frequency stabilization with heterogeneous III-V/Si lasers
Creators: name: Stern, Liron
name: Zhang, Wei
name: Chang, Lin
name: Guo, Joel
name: Xiang, Chao
name: Tran, Minh A.
name: Huang, Duanni
name: Peters, Jonathan D.
name: Kinghorn, David
name: Bowers, John E.
name: Papp, Scott B.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optics (physics.optics)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: Demand for low-noise, continuous-wave, frequency-tunable lasers based on semiconductor integrated photonics has been advancing in support of numerous applications. In particular, an important goal is to achieve narrow spectral linewidth, commensurate with bulk-optic or fiber-optic laser platforms. Here, we report on laser-frequency-stabilization experiments with a heterogeneously integrated III/V-Si widely tunable laser and a high-finesse, thermal-noise-limited photonic resonator. This hybrid architecture offers a chip-scale optical-frequency reference with an integrated linewidth of 60 Hz and a fractional frequency stability of 2.5e-13 at 1-second integration time. We explore the potential for stabilization with respect to a resonator with lower thermal noise by characterizing laser-noise contributions such as residual amplitude modulation and photodetection noise. Widely tunable, compact and integrated, cost effective, stable and narrow linewidth lasers are envisioned for use in various fields, including communication, spectroscopy, and metrology.
Dynamic System Identification of Underwater Vehicles Using Multi-Output Gaussian Processes
Creators: name: Ramirez, Wilmer Ariza
name: Kocijan, Jus
name: Leong, Zhi
name: Nguyen, Hung
name: Jayasinghe, Shantha Gamini
Publisher: name: arXiv
Year: 2020
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Non-parametric system identification with Gaussian Processes for underwater vehicles is explored in this research with the purpose of modelling autonomous underwater vehicle (AUV) dynamics with low amount of data. Multi-output Gaussian processes and its aptitude to model the dynamic system of an underactuated AUV without losing the relationships between tied outputs is used. The simulation of a first-principles model of a Remus 100 AUV is employed to capture data for the training and validation of the multi-output Gaussian processes. The metric and required procedure to carry out multi-output Gaussian processes for AUV with 6 degrees of freedom (DoF) is also shown in this paper. Multi-output Gaussian processes are compared with the popular technique of recurrent neural network show that Multi-output Gaussian processes manage to surpass RNN for non-parametric dynamic system identification in underwater vehicles with highly coupled DoF with the added benefit of providing a measurement of confidence.
Multiple Reflections and Diffuse Scattering in Bragg Scattering at Optical Lattices
Creators: name: Slama, S.
name: von Cube, C.
name: Kohler, M.
name: Zimmermann, C.
name: Courteille, Ph. W.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study Bragg scattering at 1D atomic lattices. Cold atoms are confined by optical dipole forces at the antinodes of a standing wave generated inside a laser-driven cavity. The atoms arrange themselves into an array of lens-shaped layers located at the antinodes of the standing wave. Light incident on this array at a well-defined angle is partially Bragg-reflected. We measure reflectivities as high as 30%. In contrast to a previous experiment devoted to the thin grating limit [S. Slama, et al., Phys. Rev. Lett. 94, 193901 (2005)] we now investigate the thick grating limit characterized by multiple reflections of the light beam between the atomic layers. In principle multiple reflections give rise to a photonic stop band, which manifests itself in the Bragg diffraction spectra as asymmetries and minima due to destructive interference between different reflection paths. We show that close to resonance however disorder favors diffuse scattering, hinders coherent multiple scattering and impedes the characteristic suppression of spontaneous emission inside a photonic band gap.
Cross-diffusion induced patterns for a single-step enzymatic reaction
Creators: name: Giunta, Giovanni
name: Seyed-Allaei, Hamid
name: Gerland, Ulrich
Publisher: name: arXiv
Year: 2020
Subjects: subject: Biological Physics (physics.bio-ph)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Several different enzymes display an apparent diffusion coefficient that increases with the concentration of their substrate. Moreover, their motion becomes directed in substrate gradients. Currently, there are several competing models for these transport dynamics. Here, we analyze whether the enzymatic reactions can generate a significant feedback from enzyme transport onto the substrate profile. We find that this feedback can generate spatial patterns in the enzyme distribution, with just a single-step catalytic reaction. However, patterns are formed only for a subclass of transport models. For such models, nonspecific repulsive interactions between the enzyme and the substrate cause the enzyme to accumulate in regions of low substrate concentration. Reactions then amplify local substrate fluctuations, causing enzymes to further accumulate where substrate is low. Experimental analysis of this pattern formation process could discriminate between different transport models.
Adaptive Inference in Heteroscedastic Fractional Time Series Models
Creators: name: Cavaliere, Giuseppe
name: Nielsen, Morten Ørregaard
name: A. M. Robert Taylor
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Medicine
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: FOS: Biological sciences
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Science Policy

description: We consider estimation and inference in fractionally integrated time series models driven by shocks which can display conditional and unconditional heteroscedasticity of unknown form. Although the standard conditional sum-of-squares (CSS) estimator remains consistent and asymptotically normal in such cases, unconditional heteroscedasticity inflates its variance matrix by a scalar quantity,λ>1, thereby inducing a loss in efficiency relative to the unconditionally homoscedastic case, λ = 1. We propose an adaptive version of the CSS estimator, based on nonparametric kernel-based estimation of the unconditional volatility process. We show that adaptive estimation eliminates the factor λ from the variance matrix, thereby delivering the same asymptotic efficiency as that attained by the standard CSS estimator in the unconditionally homoscedastic case and, hence, asymptotic efficiency under Gaussianity. Importantly, the asymptotic analysis is based on a novel proof strategy, which does not require consistent estimation (in the sup norm) of the volatility process. Consequently, we are able to work under a weaker set of assumptions than those employed in the extant literature. The asymptotic variance matrices of both the standard and adaptive CSS (ACSS) estimators depend on any weak parametric autocorrelation present in the fractional model and any conditional heteroscedasticity in the shocks. Consequently, asymptotically pivotal inference can be achieved through the development of confidence regions or hypothesis tests using either heteroscedasticity-robust standard errors and/or a wild bootstrap. Monte Carlo simulations and empirical applications illustrate the practical usefulness of the methods proposed.
The faint-end of the galaxy luminosity function in groups
Creators: name: Gonzalez, R. E.
name: Lares, M.
name: Lambas, D. G.
name: Valotto, C.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We compute the galaxy luminosity function in spectroscopically selected nearby groups and clusters. Our sample comprises 728 systems extracted from the third release of the Sloan Digital Sky Survey in the redshift range $0.03 < z < 0.06$ with virial mass range $10^{11}M_\odot < M_{vir} < 2\times 10^{14}M_\odot$. In order to compute the galaxy luminosity function, we apply a statistical background subtraction method following usually adopted techniques. In the $r$ band, the composite galaxy luminosity function shows a slope $α=-1.3$ in the bright--end, and an upturn of the slope in the faint--end, $M_r\ga -18+5log(h)$, to slopes $-1.9
description: 8 pages, 10 figures, Submitted to Astronomy and Astrophysics
Insights into thermal transport property of monolayer C$_4$N$_3$H: a first-principles study
Creators: name: He, Yelu
name: Liu, Dingxing
name: Ding, Yingchun
name: Yang, Jianhui
name: Gao, Zhibin
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: The electronic and thermal transport properties have been systematically investigated in monolayer C$_4$N$_3$H with first-principles calculations. The intrinsic thermal conductivity of monolayer C$_4$N$_3$H was calculated coupling with phonons Boltzmann transport equation. For monolayer C$_4$N$_3$H, the thermal conductivity (\k{appa}) (175.74 and 157.90 W m-1K-1 with a and b-plane, respectively) is significantly lower than that of graphene (3500 Wm$^{-1}$K$^{-1}$) and C3N(380 Wm$^{-1}$K$^{-1}$). Moreover, it is more than the second time higher than C$_2$N (82.88 Wm$^{-1}$K$^{-1}$) at 300 K. Furthermore, the group velocities, relax time, anharmonicity, as well as the contribution from different phonon branches, were thoroughly discussed in detail. A comparison of the thermal transport characters among 2D structure for monolayer C$_4$N$_3$H, graphene, C$_2$N and C$_3$N has been discussed. This work highlights the essence of phonon transport in new monolayer material.
description: 25 pages, 8 figures
Planck-scale physics: facts and beliefs
Creators: name: Meschini, Diego
Publisher: name: arXiv
Year: 2006
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The relevance of the Planck scale to a theory of quantum gravity has become a worryingly little examined assumption that goes unchallenged in the majority of research in this area. However, in all scientific honesty, the significance of Planck's natural units in a future physical theory of spacetime is only a plausible, yet by no means certain, assumption. The purpose of this article is to clearly separate fact from belief in this connection.
description: 14 pages, Latex
The significance of obsessions
Creators: name: Thordarson, Dana Sigrid
Publisher: name: University of British Columbia
Year: 2009

description: The purpose of this thesis was to investigate a specific cognitive theory of obsessions; namely, that unwanted and repugnant intrusive thoughts cause distress and persist when the person interprets their occurrence as highly personally significant and important. Two studies were conducted. In the first study, we described the development and undertook a validation study of a new scale of obsessional-compulsive symptoms, the Vancouver Obsessional Compulsive Inventory (VOCI). This measure was a necessary first step because established measures of obsessional-compulsive symptoms are inadequate in their assessment of a number of domains of obsessional-compulsive complaints, particularly obsessions. Our findings in samples of people with obsessivecompulsive disorder (OCD), people with other anxiety disorders or depression, community adults, and undergraduate students suggest that the VOCI is a promising new measure. In the second study, we investigated the role of interpretations of the personal significance and importance of intrusive thoughts in the occurrence of obsessions. Specifically, we hypothesized that people who have repugnant obsessions or frequent, distressing intrusive thoughts would interpret their intrusive thoughts as highly personally significant and important. Our hypotheses were, in general, supported. There was a clear relationship between beliefs and interpretations of the importance of thoughts and obsessions in both OCD and nonclinical samples. In addition, these beliefs and appraisals appeared to be specifically related to repugnant obsessions, rather than obsessive-compulsive complaints in general. This research represents one of the first attempts to evaluate the assertion that misinterpretations of intrusive thoughts are fundamental in the experience of obsessions. The development of the VOCI was a necessary first step in evaluating the relationship between interpretations of personal significance and particular obsessional-compulsive complaints. By demonstrating specific interpretations that are associated with clinical obsessions, we hope to refine cognitive-behavioural models of obsessions, and suggest ways in which current cognitive-behaviour therapy for obsessions can be sharpened and made more effective.
Excitons in Electrostatic Traps
Creators: name: Hammack, A. T.
name: Gippius, N. A.
name: Andreev, G. O.
name: Butov, L. V.
name: Hanson, M.
name: Gossard, A. C.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We consider in-plane electrostatic traps for indirect excitons in coupled quantum wells, where the traps are formed by a laterally modulated gate voltage. An intrinsic obstacle for exciton confinement in electrostatic traps is an in-plane electric field that can lead to exciton dissociation. We propose a design to suppress the in-plane electric field and, at the same time, to effectively confine excitons in the electrostatic traps. We present calculations for various classes of electrostatic traps and experimental proof of principle for trapping of indirect excitons in electrostatic traps.
description: 4 pages, 3 figures
Dirac and Majorana neutrinos in matter
Creators: name: Grigoriev, Alexander
name: Studenikin, Alexander
name: Ternov, Alexei
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We consider the matter effects on neutrinos moving in background on the basis of the corresponding quantum wave equations. Both Dirac and Majorana neutrino cases are discussed. The effects for Dirac neutrino reflection and trapping as well as neutrino-antineutrino annihilation and $ν\overlineν$ pair creation in matter at the interface between two media with different densities are considered. The spin light of neutrino in matter is also discussed.
description: 11 pages, 2 figures, in: Proceedings of the 5th International Conference on Non-Accelerator New Physics (Dubna, Russia, June 20-25, 2005). V2: typos corrected
MAORI AND THE INFORMATION WORKFORCE, 1991-2001
Creators: name: Engelbrecht, Hans-Jurgen
name: Mahon, Anne
name: Engelbrecht, Hans-Jurgen
name: Mahon, Anne
Publisher: name: Unknown
Year: 2003
Subjects: Labor and Human Capital

description: This paper documents the size, composition and changes in New Zealand's information workforce over the period 1991 to 2001. The estimates are disaggregated into Maori/non-Maori, by gender, and by major occupational categories. The absolute as well as relative size of the information workforce has continued to grow during the period, though the relative growth rate is a lot lower than during the 1980s. While the findings for women in general are encouraging, those for Maori, and especially Maori men, are less so. Maori remain underrepresented in the information workforce. Although their participation has increased, the gaps in participation rates between Maori and non-Maori have changed little.
Mean lattice point discrepancy bounds, II: Convex domains in the plane
Creators: name: Iosevich, Alexander
name: Sawyer, Eric T.
name: Seeger, Andreas
Publisher: name: arXiv
Year: 2005
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: Number Theory (math.NT)
subject: FOS: Mathematics

description: We consider planar curved strictly convex domains with no or very weak smoothness assumptions and prove sharp bounds for square-functions associated to the lattice point discrepancy.
description: Revised version, to appear in Journal d'Analyse Mathematique
Multiplexing lobster-eye optics: a concept for wide-field X-ray monitoring
Creators: name: Tamagawa, Toru
name: Uchiyama, Keisuke
name: Otsubo, Ryota
name: Yuasa, Tatsuya
name: Zhou, Yuanhui
name: Mihara, Tatehiro
name: Ezoe, Yuichiro
name: Numazawa, Masaki
name: Ishi, Daiki
name: Fukushima, Aoto
name: Suzuki, Hikaru
name: Uchino, Tomoki
name: Sakuta, Sae
name: Ishikawa, Kumi
name: Enoto, Teruaki
name: Sakamoto, Takanori
Publisher: name: arXiv
Year: 2020
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We propose a concept of multiplexing lobster-eye (MuLE) optics to achieve significant reductions in the number of focal plane imagers in lobster-eye (LE) wide-field X-ray monitors. In the MuLE configuration, an LE mirror is divided into several segments and the X-rays reflected on each of these segments are focused on a single image sensor in a multiplexed configuration. If each LE segment assumes a different rotation angle, the azimuthal rotation angle of a cross-like image reconstructed from a point source by the LE optics identifies the specific segment that focuses the X-rays on the imager. With a focal length of 30 cm and LE segments with areas of 10 x 10 cm^2, ~1 sr of the sky can be covered with 36 LE segments and only four imagers (with total areas of 10 x 10 cm^2). A ray tracing simulation was performed to evaluate the nine-segment MuLE configuration. The simulation showed that the flux (0.5 to 2 keV) associated with the 5-sigma detection limit was ~2 x 10^-10 erg cm^-2 s^-1 (10 mCrab) for a transient with a duration of 100 s. The simulation also showed that the direction of the transient for flux in the range of 14 to 17 mCrab at 0.6 keV was determined correctly with 99.7% confidence limit. We conclude that the MuLE configuration can become an effective on-board device for small satellites for future X-ray wide-field transient monitoring.
description: 20 pages, 14 figures
Big-Bang nucleosynthesis (Particle Data Group mini-review)
Creators: name: Fields, Brian
name: Sarkar, Subir
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: A critical review is given of the current status of cosmological nucleosynthesis. In the framework of the Standard Model with 3 types of relativistic neutrinos, the baryon-to-photon ratio, $η$, corresponding to the inferred primordial abundances of deuterium and helium-4 is consistent with the independent determination of $η$ from WMAP observations of anisotropies in the cosmic microwave background. However the primordial abundance of lithium-7 inferred from observations is significantly below its expected value. Taking systematic uncertainties in the abundance estimates into account, there is overall concordance in the range $η= (4.7 - 6.5) x 10^{-10}$ @ 95% c.l. (corresponding to a cosmological baryon density $Ω_B h^2$ = 0.017 - 0.024). The D and He-4 abundances, together with the CMB determination of $η$, provide the bound $N_ν= 3.24 \pm 1.2$ @ 95% c.l. on the effective number of neutrino species. Other constraints on new physics are discussed briefly.
description: 11 pages, 1 (new) figure; from Review of Particle Physics 2006 (http://pdg.lbl.gov/)
title:  Cosa resta della globalizzazione?
Creators: name: Contaldi  ,  Gianluca
Publisher: name: Roma TrE-Press
Year: 2021

description: L’autore analizza l’attuale fase di crisi della globalizzazione. Nella specie, egli constata come il processo di globalizzazione, che ha rappresentato il movimento imperante nel corso del ventesimo secolo, stia ora attraversando una fase recessiva. Questa regressione del processo di globalizzazione è dovuta sia a circostanze indogene (la crisi del capitalismo, le crescenti diseguaglianze, l’unilateralismo delle relazioni commerciali internazionali), sia a fattori esogeni, quali le migrazioni di massa, le emergenze ambientali, lo scoppio della pandemia da Covid-19. L’autore constata, tuttavia, come i processi di interdipendenza delle relazioni internazionali siano ormai troppo sviluppati per potere realmente porre in crisi la globalizzazione e che pertanto, nonostante la pausa di riflessione indotta da circostanze momentanee, è verosimile pensare che non sia in corso un mutamento profondo nel funzionamento dei sistemi economici internazionali.
description: Sovranità e diritti al tempo della globalizzazione
Sojourn time in a $M^{[X]}/M/1$ Processor Sharing Queue with batch arrivals (II)
Creators: name: Guillemin, F.
name: Rodriguez, V. K. Quintuna
name: Simonian, A.
name: Nasri, R.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Probability (math.PR)
subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: For the $M^{[X]}/M/1$ processor Sharing queue with batch arrivals, the sojourn time $Ω$ of a batch is investigated. We first show that the distribution of $Ω$ can be generally obtained from an infinite linear differential system. When further assuming that the batch size has a geometric distribution with given parameter $q \in [0,1[$, this differential system is further analyzed by means of an associated bivariate generating function $(x,u,v) \mapsto E(x,u,v)$. Specifically, denoting by $s \mapsto E^*(s,u,v)$ the one-sided Laplace transform of $E(\cdot,u,v)$ and defining $$ Φ(s,u,v) = P(s,u) \, (1-v) \, F^*(s,u,uv), \quad 0 < \vert u \vert < 1, \, \vert v \vert < 1, $$ for some known polynomial $P(s,u)$ and where $$ F^*(s,u,v) = \frac{E^*(s,u,v)-E^*(s,q,v)}{u-q}, $$ we show that the function $Φ$ verifies an inhomogeneous linear partial differential equation (PDE) $$ \frac{\partial Φ}{\partial u} - \left [ \frac{u - q}{P(s,u)} \right ] v(1-v) \, \frac{\partial Φ}{\partial v} + \ell(s,u,v) = 0 $$ for given $s$, where the last term $\ell(s,u,v)$ involves both $E^*(s,q,v)$ and the first order derivative $\partial E^*(s,q,v)/\partial v$ at the boundary point $u = q$. Solving this PDE for $Φ$ via its characteristic curves and with the required analyticity properties eventually determines the one-sided Laplace transform $E^*$. By means of a Laplace inversion of this transform $E^*$, the distribution function of the sojourn time $Ω$ of a batch is then given in an integral form. The tail behavior of the distribution of sojourn time $Ω$ is finally derived.
description: 22 pages
ลีลาเฉพาะกวี: ลักษณะเด่นทางวรรณศิลป์ในร่ายยาวมหาเวสสันดรชาดก
Creators: name: วชิราภรณ์ รุ่งโรจน์ชนาทิพย์
Publisher: name: คณะศิลปศาสตร์ มหาวิทยาลัยธรรมศาสตร์
Year: 2004
Subjects: -

description: วรรณวิทัศน์, 4, พฤศจิกายน, 123-137
Extrinsic inhomogeneity effects in magnetic, transport and magnetoresistive properties of La_{1-x}Ca_{x}MnO_{3} (x\approx 0.33) crystal prepared by the floating zone method
Creators: name: Belevtsev, B. I.
name: Naugle, D. G.
name: Rathnayaka, K. D. D.
name: Parasiris, A.
name: Fink-Finowicki, J.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The paper describes a study of the magnetic, transport and magnetoresistive properties of La_{1-x}Ca_{x}MnO_{3} (x\approx 0.33) crystals prepared by the floating-zone method. We found that these properties testify to rather good crystal perfection of the sample studied. In particular, a huge magnetoresistance ([R(0)-R(H)]/R(H) in the field H = 5 T is about 2680 %) is found near the Curie temperature (216 K). At the same time, some distinct features of measured properties indicate the influence of extrinsic inhomogeneities arising due to technological factors in the sample preparation. Analysis of the data obtained shows that these are rare grain boundaries and twins. Specific influence of the grain-boundary-like inhomogeneities on the transport and magnetoresistive properties are considered.
description: Submitted to Physica B
title: Влияние биологических и социальных факторов на высшие психические функции детей
Creators: name: ELS IPR BOOKS
Publisher: name: Ай Пи Ар Медиа
Year: 2021

description: Монография посвящена актуальному вопросу возрастной физиологии — изучению связи биологических и социальных факторов с уровнем развития высших психических функций детей. Издание будет полезно психологам, педагогам, педиатрам и экологам. Может быть использовано в качестве учебного пособия для преподавателей и студентов, специализирующихся в области психологии, возрастной физиологии, экологии человека, экологической физиологии.
title: Влияние загрязнения воздуха на состояние здоровья и развитие детей
Creators: name: ELS IPR BOOKS
Publisher: name: Ай Пи Ар Медиа
Year: 2021

description: Монография является обобщением и систематизацией современных исследований по проблеме воздействия загрязнения атмосферного воздуха на организм ребенка. В ходе исследования 1 097 детей г. Кирова получены данные по региональным особенностям влияния аэротехногенного загрязнения на протекание пренатального периода, состояние физического развития и здоровье детей. Книга предназначена для биологов, экологов, педиатров, а также может быть использована в качестве учебного пособия преподавателями и студентами, специализирующимися в области экологии человека и экологической эпидемиологии.
Income Distribution Dependence of Poverty Measure: A Theoretical Analysis
Creators: name: Chattopadhyay, Amit K
name: Mallick, Sushanta K
Publisher: name: arXiv
Year: 2005
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: General Finance (q-fin.GN)
subject: FOS: Physical sciences
subject: FOS: Economics and business

description: With a new deprivation (or poverty) function, in this paper, we theoretically study the changes in poverty with respect to the `global' mean and variance of the income distribution using Indian survey data. We show that when the income obeys a log-normal distribution, a rising mean income generally indicates a reduction in poverty while an increase in the variance of the income distribution increases poverty. This altruistic view for a developing economy, however, is not tenable anymore once the poverty index is found to follow a pareto distribution. Here although a rising mean income indicates a reduction in poverty, due to the presence of an inflexion point in the poverty function, there is a critical value of the variance below which poverty decreases with increasing variance while beyond this value, poverty undergoes a steep increase followed by a decrease with respect to higher variance. Following these results, we make quantitative predictions to correlate a developing with a developed economy.
description: 13 pages in single spaced latex, 4 figures, submitted to 'Econometrica'
title: Влияние пола, типа темперамента, функциональной асимметрии мозга и других факторов на развитие детей и успешность их образовательной деятельности
Creators: name: ELS IPR BOOKS
Publisher: name: Ай Пи Ар Медиа
Year: 2021

description: В монографии обобщены и систематизированы данные современных исследований российских и зарубежных ученых по вопросу влияния биологических и социальных факторов на развитие и успешность образовательной деятельности детей. При подготовке монографии использованы результаты собственных исследований автора среди первоклассников г. Кирова, позволяющие составить их комплексный портрет с учетом особенностей внутриутробного, физического и нервно-психического развития. Монография будет полезна психологам, педагогам, педиатрам и экологам. Может быть использована в качестве учебного пособия преподавателями и студентами, специализирующимися в области психологии, возрастной физиологии, экологии человека, экологической физиологии.
Influence of ash-soot interactions on the reactivity of soot from a gasoline direct injection engine
Creators: name: Easter, Jordan
name: Bohac, Stanislav
name: Hoard, John
name: Boehman, Andre
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biophysics
subject: Biochemistry
subject: Space Science
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Microbiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Gasoline particulate filters (GPF) are being utilized in certain markets on gasoline direct injection (GDI) vehicles to reduce tailpipe particulate emissions as required by particle number regulations. GPF filtration efficiency is dependent on soot build-up within the filter. Since soot oxidizes within the GPF during normal vehicle operation, an understanding of soot reactivity is important for optimizing aftertreatment architecture and engine calibration. Past work has indicated that gasoline soot reactivity may depend on levels of metallic ash species. In this work, carbonaceous particulate matter from a GDI engine are evaluated from engine operation at a consistent speed and load but with different levels of fuel injection pressures and timings to vary the relative ash to soot ratio. Soot reactivity is found to vary significantly with the ratio of ash to soot present. Interestingly, the more reactive soots possess a unique oxidation profile by which a conventional Arrhenius type expression cannot be used to quantify reactivity. To understand the mechanisms driving such distinct oxidation differences, soot samples are analyzed after being partially oxidized. Particulate characteristics are evaluated by x-ray photoelectron spectroscopy (XPS), Raman spectroscopy, high-resolution transmission electron microscopy (HR-TEM), and scanning transmission electron microscopy with energy dispersive spectroscopy (STEM + EDS). A mechanism is proposed that may explain further why ash affects gasoline soot reactivity to the extent seen in this and other work. Copyright © 2020 American Association for Aerosol Research
Formation dynamics of exciton polariton vortices created by non-resonant annular pumping
Creators: name: Berger, Bernd
name: Schmidt, Daniel
name: Ma, Xuekai
name: Schumacher, Stefan
name: Schneider, Christian
name: Höfling, Sven
name: Aßmann, Marc
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optics (physics.optics)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We study the spontaneous formation of exciton polariton vortices in an all-optical non-resonantly excited annular trap, which is formed by ring-shaped subpicosecond laser pulses. Since the light emitted by these vortices carries orbital angular momentum (OAM) corresponding to their topological charge, we apply a dedicated OAM spectroscopy technique to detect the OAM of the measurement signal with picosecond time resolution. This allows us to identify the formation of OAM modes and investigate the dynamics of the vortex formation process. We also study the power dependence of this process and how the ring diameter influences the formation of OAM modes.
A Lattice-Boltzmann model for suspensions of self-propelling colloidal particles
Creators: name: Ramachandran, Sanoop
name: Kumar, P. B. Sunil
name: Pagonabarraga, I.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We present a Lattice-Boltzmann method for simulating self-propelling (active) colloidal particles in two-dimensions. Active particles with symmetric and asymmetric force distribution on its surface are considered. The velocity field generated by a single active particle, changing its orientation randomly, and the different time scales involved are characterized in detail. The steady state speed distribution in the fluid, resulting from the activity, is shown to deviate considerably from the equilibrium distribution.
description: 8 pages, 13 figures
The Hagedorn thermostat
Creators: name: Moretto, L. G.
name: Bugaev, K. A.
name: Elliott, J. B.
name: Phair, L.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Nuclear Theory (nucl-th)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: A system H with a Hagedorn-like mass spectrum imparts its unique temperature TH to any other system coupled to it. An H system radiates particles in preexisting physical and chemical equilibrium. These particles form a saturated vapor at temperature TH. This coexistence describes a first order phase transition. An H system is nearly indifferent to fragmentation into smaller H systems. A lower mass cut-off in the spectrum does not significantly alter the general picture
description: Four pages, one figure
All Inequalities for the Relative Entropy
Creators: name: Ibinson, Ben
name: Linden, Noah
name: Winter, Andreas
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The relative entropy of two n-party quantum states is an important quantity exhibiting, for example, the extent to which the two states are different. The relative entropy of the states formed by reducing two n-party to a smaller number $m$ of parties is always less than or equal to the relative entropy of the two original n-party states. This is the monotonicity of relative entropy. Using techniques from convex geometry, we prove that monotonicity under restrictions is the only general inequality satisfied by relative entropies. In doing so we make a connection to secret sharing schemes with general access structures. A suprising outcome is that the structure of allowed relative entropy values of subsets of multiparty states is much simpler than the structure of allowed entropy values. And the structure of allowed relative entropy values (unlike that of entropies) is the same for classical probability distributions and quantum states.
description: 15 pages, 3 embedded eps figures
title: Радиационная экология
Creators: name: ELS IPR BOOKS
Publisher: name: Ай Пи Ар Медиа
Year: 2021

description: Учебное пособие представляет собой изложение теоретического материала курса «Радиационная экология», задания для самостоятельной работы, рекомендации и материалы по учебно-методическому обеспечению дисциплины. Подготовлено с учетом требований Федерального государственного образовательного стандарта высшего образования. Предназначено для бакалавров, магистров и аспирантов, обучающихся по направлению подготовки «Экология и природопользование» (профили «Экология», «Геоэкология» и «Природопользование») естественнонаучных факультетов университетов, а также для тех, кто интересуется данной тематикой. Издание может быть использовано преподавателями для организации лекций, самостоятельной работы и практических занятий по курсу «Радиационная экология», а также в качестве дополнительного материала.
Influence of Ash-Soot Interactions on the Reactivity of Soot from a Gasoline Direct Injection Engine
Creators: name: Easter, Jordan
name: Bohac, Stanislav
name: Hoard, John
name: Boehman, Andre
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biophysics
subject: Biochemistry
subject: Space Science
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Microbiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 69999 Biological Sciences not elsewhere classified

description: Gasoline particulate filters (GPF) are being utilized in certain markets on gasoline direct injection (GDI) vehicles to reduce tailpipe particulate emissions as required by particle number regulations. GPF filtration efficiency is dependent on soot build-up within the filter. Since soot oxidizes within the GPF during normal vehicle operation, an understanding of soot reactivity is important for optimizing aftertreatment architecture and engine calibration. Past work has indicated that gasoline soot reactivity may depend on levels of metallic ash species. In this work, carbonaceous particulate matter from a GDI engine are evaluated from engine operation at a consistent speed and load but with different levels of fuel injection pressures and timings to vary the relative ash to soot ratio. Soot reactivity is found to vary significantly with the ratio of ash to soot present. Interestingly, the more reactive soots possess a unique oxidation profile by which a conventional Arrhenius type expression cannot be used to quantify reactivity. To understand the mechanisms driving such distinct oxidation differences, soot samples are analyzed after being partially oxidized. Particulate characteristics are evaluated by x-ray photoelectron spectroscopy (XPS), Raman spectroscopy, high-resolution transmission electron microscopy (HR-TEM), and scanning transmission electron microscopy with energy dispersive spectroscopy (STEM + EDS). A mechanism is proposed that may explain further why ash affects gasoline soot reactivity to the extent seen in this and other work.
Circulating cavity magnon polaritons
Creators: name: Yu, Weichao
name: Yu, Tao
name: Bauer, Gerrit E. W.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We predict magnon polariton states circulating unidirectionally in a microwave cavity when loaded by a number of magnets on special lines. Realistic finite-element numerical simulations, including dielectric, time-dependent and non-linear effects, confirm the validity of the approximations of a fully analytical input-output model. We find that a phased antenna array can focus all power into a coherent microwave beam with controlled direction and an intensity that scales with the number of magnets.
description: 12 pages, 6 figures
Manufacturing-constrained multi-objective optimization of local patch reinforcements for discontinuous fiber reinforced composite parts
Creators: name: Fengler, Benedikt
Publisher: name: KIT Scientific Publishing
Year: 2021
Subjects: Faserverbund
Optimierung
Fertigungsrandbedingungen
Simulation
composites
optimization
manufacturing constraints
simulation

description: In this work, contributes to the optimization of local continuous fiber reinforcement patches, under consideration of manufacturing constraints. This approach requires specific optimization strategies. Therefore, an multi-objective optimization strategy for the placement of local reinforcement patches, under consideration of manufacturing constraints, has been developed. During the multi objective optimization, structural and process related objectives are considered.
Arithmetic inflection formulae for linear series on hyperelliptic curves
Creators: name: Cotterill, Ethan
name: Darago, Ignacio
name: Han, Changho
Publisher: name: arXiv
Year: 2020
Subjects: subject: Algebraic Geometry (math.AG)
subject: Algebraic Topology (math.AT)
subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 14C20, 14C35, 14N10, 14P25, 14Hxx, 11Gxx, 11Txx, 19E15

description: Over the complex numbers, Plücker's formula computes the number of inflection points of a linear series of projective dimension $r$ and degree $d$ on a curve of genus $g$. Here we explore the geometric meaning of a natural analogue of Plücker's formula in $\mathbb{A}^1$-homotopy theory for certain linear series on hyperelliptic curves defined over an arbitrary field.
description: Final, enhanced version, to appear in Math. Nachrichten; 30 pages, 4 figures
Creativity and Innovation in college students
Creators: name: Quintero, Esteban
Publisher: name: figshare
Year: 2021
Subjects: subject: 160809 Sociology of Education
subject: FOS: Sociology

description: Creativity is defined as the ability to generate new ideas or concepts, of new associations between known ideas and concepts, which usually produce original solutions. On the other hand, innovation is conceived as a process that introduces new features and refers to modifying existing elements in order to improve them, although it is also possible in the implementation of totally new elements. Today, university education focuses on training young people who have followed a previous process of basic education, based on standardized basic parameters worldwide and leading them to direct their professional life to a specific field, be it engineering, health sciences, economics or some other different area; However, third-level education, like secondary or primary, has continued with a continuous and monotonous approach, where students are taught to follow a group of steps to reach an objective or solution and students are not educated. themselves in a way that they can create new techniques or innovate on existing ones. The present work aims to identify which is the ideal profile of university students in terms of innovation and creativity, recognize the presence of these characteristics in students and their relationship with adaptation to life and the university context.
Two-dimensional interactions between a BF-type theory and a collection of vector fields
Creators: name: Cioroianu, E. M.
name: Sararu, S. C.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Consistent interactions that can be added to a two-dimensional, free abelian gauge theory comprising a special class of BF-type models and a collection of vector fields are constructed from the deformation of the solution to the master equation based on specific cohomological techniques. The deformation procedure modifies the Lagrangian action, the gauge transformations, as well as the accompanying algebra of the interacting model.
description: LaTeX 2e, 31 pages
title: Data of the seismic reflection experiment in the Baza Basin (BASE project, October 2013)
Creators: name: Baumann-Wilke, Maria
name: Haberland, Christian
name: Stiller, Manfred
name: Gibert, Luis
name: Jurado, Maria Jose
name: Scott, Gary
Publisher: name: Deutsches GeoForschungsZentrum GFZ
Year: 2015

description: Scientific Technical Report - Data GIPP Experiment- and Data Archive; 15/01
The method of numerical and analytical solution of linear differential equations with non-integer derivatives in Caputo order and with variable coefficients
Creators: name: Vasyliev, Oleksii V.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: The application of the approximation-operational approach to solving linear differential equations of fractional order with variable coefficients is considered. It is shown that the method can also be applied to solving differential equations of both fractional and mixed orders. Computational experiments performed in a Mathematica (TM) software environment
description: 12 pages, in Ukrainian
Тумор-инфилтриращи лимфоцити - значението им за протичането и ефекта от лечение на рака на гърдата. Литературен обзор.
Creators: name: Jeliazko Arabadjiev
Publisher: name: figshare
Year: 2020
Subjects: subject: 111202 Cancer Diagnosis
subject: FOS: Clinical medicine
subject: 111201 Cancer Cell Biology
subject: 111203 Cancer Genetics
subject: 111204 Cancer Therapy (excl. Chemotherapy and Radiation Therapy)
subject: 111205 Chemotherapy
subject: 111299 Oncology and Carcinogenesis not elsewhere classified

description: Литературен обзор върху ролята на тумор-инфилтриращи лимфоцити (ТИЛс) като предиктивен и прогностичен фактор при рака на гърдата.