cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Global determination of two-meson distribution amplitudes from three-body $B$ decays in the perturbative QCD approach
Creators: name: Li, Ya
name: Yan, Da-Cheng
name: Hua, Jun
name: Rui, Zhou
name: Li, Hsiang-nan
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We perform a global analysis of three-body charmless hadronic decays $B\to VP_3\to P_1P_2P_3$ in the perturbative QCD (PQCD) approach, where $V$ denotes an intermediate vector resonance, and $P_i$, $i=1,2,3$, denote final-state pseudoscalar mesons. Fitting the PQCD factorization formulas at leading order in the strong coupling $α_s$ to measured branching ratios and direct $CP$ asymmetries, we determine the Gegenbauer moments in the two-meson distribution amplitudes (DAs) for the meson pairs $P_1P_2=ππ, Kπ, KK$. The fitted Gegenbauer moments are then employed to make predictions for those observables, whose data are excluded in the fit due to larger experimental uncertainties. A general consistency between our predictions and data is achieved, which hints the validity of the PQCD formalism for the above three-body $B$ meson decays and the universality of the nonperturbative two-meson DAs. The obtained two-meson DAs can be applied to PQCD studies of other multi-body $B$ meson decays involving the same meson pairs. We also attempt to determine the dependence of the Gegenbauer moments on the meson-pair invariant mass, and demonstrate that this determination is promising, when data become more precise.
description: 30 pages, 2 figures
Laparohysterectomy as a Therapy for Uterine Rupture
Creators: name: De Nooij, P. P.
Publisher: name: American Association of Bovine Practitioners  Proceedings of the Annual Conference
Year: 1981

description: This paper describes the treatment of uterine rupture by means of a laparohysterectomy.
description: American Association of Bovine Practitioners Proceedings of the Annual Conference, 1981
Photosynthetic biogas upgrading in wastewater treatment plants.
Creators: name: Mª Del Rosario Rodero
name: Lebrero, Raquel
name: Serrano, Esteban
name: Lara, Enrique
name: Zouhayr Arbib
name: Muñoz, Raúl
Publisher: name: Zenodo
Year: 2019
Subjects: biogas
biomethane
liquid/gas ratio

description: Poster presented in 16th IWA World Conference on Anaerobic Digestion. Influence of the biogas flowrate, liquid to gas ratio and type of wastewater on biomethane quality during biogas upgrading coupled to wastewater treatment in algal-bacterial photobioreactors.
description: {"references": ["Toledo-Cervantes A., Serejo M., Blanco S., P\u00e9rez R., Lebrero R., Mu\u00f1oz R., (2016). Photosynthetic biogas upgrading to bio-methane: Boosting nutrient recovery via biomass productivity control. Algal Res.17, 46-52.", "Mar\u00edn D., Posadas E., Cano P., P\u00e9rez V., Blanco S., Lebrero R. and Mu\u00f1oz R. (2018). Seasonal variation of biogas upgrading coupled with digestate treatment in an outdoors pilot scale algal-bacterial photobioreactor. Bioresour. Technol. 263, 58-66", "Posadas,E.,Serejo,M.L.,Blanco,S.,P\u00e9rez,R.,Garc\u00eda Encina,P.A.,Mu\u00f1oz,R.(2015).Minimization of biomethane oxygen concentration during biogas upgrading in algal-bacterial photobioreactors. Algal Res.12,221\u2013229."]}
On bounds and algorithms for frequency synchronization for collaborative communication systems
Creators: name: Parker, Peter A.
name: Mitran, Patrick
name: Bliss, Daniel W.
name: Tarokh, Vahid
Publisher: name: arXiv
Year: 2007
Subjects: subject: Applications (stat.AP)
subject: Statistics Theory (math.ST)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: Cooperative diversity systems are wireless communication systems designed to exploit cooperation among users to mitigate the effects of multipath fading. In fairly general conditions, it has been shown that these systems can achieve the diversity order of an equivalent MISO channel and, if the node geometry permits, virtually the same outage probability can be achieved as that of the equivalent MISO channel for a wide range of applicable SNR. However, much of the prior analysis has been performed under the assumption of perfect timing and frequency offset synchronization. In this paper, we derive the estimation bounds and associated maximum likelihood estimators for frequency offset estimation in a cooperative communication system. We show the benefit of adaptively tuning the frequency of the relay node in order to reduce estimation error at the destination. We also derive an efficient estimation algorithm, based on the correlation sequence of the data, which has mean squared error close to the Cramer-Rao Bound.
description: Submitted to IEEE Transaction on Signal Processing
Case for quarkyoniclike matter from a constituent quark model
Creators: name: Park, Aaron
name: Jeong, Kie Sang
name: Lee, Su Houng
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Based on the fact that the constituent quark model reproduces the recent lattice result on baryon-baryon repulsion at short distance and that it includes the quark dynamics with confinement, we analyze to what extent the quarkyonic modes appear in the phase space of baryons as one increases the density before only quark dynamics and hence deconfinement occurs. We find that as one increases the baryon density, the initial quark mode that appears will involve the $d(u)$-quark from a neutron (proton), which will leave the most attractive ($ud$) diquark intact.
description: 8 pages, 6 figures
Triple Higgs boson production in the Linear Collider
Creators: name: Ferrera, Giancarlo
name: Guasch, Jaume
name: Lopez-Val, David
name: Sola, Joan
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Triple Higgs boson production (3H) may provide essential information to reconstruct the Higgs potential. We consider 3H-production in the International Linear Collider (ILC) both in the Minimal Supersymmetric Standard Model (MSSM) and in the general Two-Higgs-doublet Model (2HDM). We compute the total cross-section for the various 3H final states, such as H^+ H^- h^0, H^0 A^0 h^0, etc. and compare with the more traditional double Higgs (2H) boson production processes. While the cross-sections for the 2H final states lie within the same order of magnitude in both the MSSM and 2HDM, we find that for the 3H states the maximum 2HDM cross-sections, being of order 0.1 pb, are much larger than the MSSM ones which in most cases are of order 10^{-6} pb or less. Actually, the 3H processes could be the dominant mechanism for Higgs boson production in the 2HDM. Ultimately the origin of the remarkable enhancement of the 3H channels in the 2HDM case (for both type I and type II models) originates in the structure of the trilinear Higgs boson couplings. The extremely clean environment of the ILC should allow a relatively comfortable tagging of the three Higgs boson events. In view of the fact that the MSSM contribution is negligible, these events should manifest themselves mainly in the form of 6 heavy-quark jet final states. Some of these signatures could be spectacular, and in case of being detected would constitute strong evidence of an extended Higgs sector of non-supersymmetric origin.
description: LaTeX, 17 pages, 4 figures, 5 tables. References and comments added. Version accepted in Phys. Lett. B
Effective spin systems in coupled micro-cavities
Creators: name: Hartmann, Michael J.
name: Brandao, Fernando G. S. L.
name: Plenio, Martin B.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We show that atoms trapped in micro-cavities that interact via exchange of virtual photons can model an anisotropic Heisenberg spin-1/2 chain in an external magnetic field. All parameters of the effective Hamiltonian can individually be tuned via external lasers. Since the occupation of excited atomic levels and photonic states are strongly suppressed, the effective model is robust against decoherence mechanisms, has a long lifetime and its implementation is feasible with current experimental technology. The model provides a feasible way to create cluster states in these devices.
description: 5 pages, 4 figures
Intersection probabilities for a chordal SLE path and a semicircle
Creators: name: Alberts, Tom
name: Kozdron, Michael J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 82B21 (Primary), 60K35, 60G99, 60J65 (Secondary)

description: We derive a number of estimates for the probability that a chordal SLE path in the upper half plane H intersects a semicircle centred on the real line. We prove that if 00 of radius rx, 00. For 4
description: v2: 11 pages, 7 figures; changed title, fixed typos, shortened some proofs, updated acknowledgements and references
Additional file 3 of CALB2 drives pancreatic cancer metastasis through inflammatory reprogramming of the tumor microenvironment
Creators: name: Tao, Jinxin
name: Gu, Yani
name: Zhang, Zeyu
name: Weng, Guihu
name: Liu, Yueze
name: Ren, Jie
name: Shi, Yanan
name: Qiu, Jiangdong
name: Wang, Yuanyang
name: Su, Dan
name: Wang, Ruobing
name: Fu, Yifan
name: Liu, Tao
name: Ye, Liyuan
name: Luo, Wenhao
name: Chen, Hao
name: Yang, Gang
name: Cao, Zhe
name: Huang, Hua
name: Xiao, Jianchun
name: Ren, Bo
name: You, Lei
name: Zhang, Taiping
name: Zhao, Yupei
Publisher: name: figshare
Year: 2024
Subjects: subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Pharmacology
subject: Chemical Sciences not elsewhere classified
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Cancer

description: Supplementary Material 3.
Lorentzian worldline path integral approach to Schwinger effect
Creators: name: Rajeev, Karthik
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We demonstrate that the positive frequency modes for a complex scalar field in a constant electric field (Schwinger modes), in three different gauges, can be represented as exact Lorentzian worldline path integral amplitudes. Although the mathematical forms of the mode functions differ in each gauge, we show that a simple prescription for Lorentzian worldlines' boundary conditions dispenses the Schwinger modes in all three gauges (that we considered) in a unified manner. Following that, using our formalism, we derive the exact Bogoliubov coefficients and, hence, the particle number, \textit{without} appealing to the well-known connection formulas for parabolic cylinder functions. This result is especially relevant in view of the fact that in a general electromagnetic field configuration, one does not have the luxury of closed-form solutions. We argue that the real time worldline path integral approach may be a promising alternative in such non-trivial cases. We also demonstrate, using Picard-Lefschetz theory, how the so-called worldline instantons emerge naturally from relevant saddle points that are complex.
description: 35 pages, 8 figures, Version published in PRD
Explosive instability due to 4-wave mixing
Creators: name: Safdi, Benjamin R.
name: Segur, Harvey
Publisher: name: arXiv
Year: 2007
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: It is known that an explosive instability can occur when nonlinear waves propagate in certain media that admit 3-wave mixing. The purpose of this paper is to show that explosive instabilities can occur even in media that admit no 3-wave mixing. Instead, the instability is caused by 4-wave mixing: four resonantly interacting wavetrains gain energy from a background, and all blow up in a finite time. Unlike singularities associated with self-focussing, these singularities can occur with no spatial structure - the waves blow up everywhere in space, simultaneously.
The Symmetric Tensor Lichnerowicz Algebra and a Novel Associative Fourier-Jacobi Algebra
Creators: name: Hallowell, Karl
name: Waldron, Andrew
Publisher: name: arXiv
Year: 2007
Subjects: subject: Differential Geometry (math.DG)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 53A55, 16G99, 51P05, 70H99, 53A45, 81T20

description: Lichnerowicz's algebra of differential geometric operators acting on symmetric tensors can be obtained from generalized geodesic motion of an observer carrying a complex tangent vector. This relation is based upon quantizing the classical evolution equations, and identifying wavefunctions with sections of the symmetric tensor bundle and Noether charges with geometric operators. In general curved spaces these operators obey a deformation of the Fourier-Jacobi Lie algebra of sp(2,R). These results have already been generalized by the authors to arbitrary tensor and spinor bundles using supersymmetric quantum mechanical models and have also been applied to the theory of higher spin particles. These Proceedings review these results in their simplest, symmetric tensor setting. New results on a novel and extremely useful reformulation of the rank 2 deformation of the Fourier-Jacobi Lie algebra in terms of an associative algebra are also presented. This new algebra was originally motivated by studies of operator orderings in enveloping algebras. It provides a new method that is superior in many respects to common techniques such as Weyl or normal ordering.
description: This is a contribution to the Proceedings of the 2007 Midwest Geometry Conference in honor of Thomas P. Branson, published in SIGMA (Symmetry, Integrability and Geometry: Methods and Applications) at http://www.emis.de/journals/SIGMA/
Exotic instantons in eight dimensions
Creators: name: Loginov, E. K.
name: Loginova, E. D.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this paper, we study the (anti-)self-duality equations $\ast F\wedge F=\pm F\wedge F$ in the eight-dimensional Euclidean space. Using properties of the Clifford algebra $Cl_{0,8}(\mathbb{R})$, we find a new solution to these equations.
description: 8 pages, LaTeX, no figures
Minifarms: Farm Business or Rural Residence?
Creators: name: Brooks, Nora L.
name: Brooks, Nora L.
Publisher: name: Unknown
Year: 1985
Subjects: subject: Farm Management
subject: Financial Economics
subject: Labor and Human Capital
subject: Minifarms
subject: small farms
subject: off-farm work
subject: farm product sales

description: Minifarms—those with less than $2,500 in farm sales annually—account for about 25 percent of all U.S. farms, almost 2 percent of U.S. harvested cropland, and less than 1 percent of U.S. farm product sales. Minifarms' assets are underused; for example, the value of minifarm land and buildings per dollar of sales is $64.65, compared with $2.50 for large farms. Most minifarm operators spend over 200 days a year doing off-farm work, and probably maintain the minifarms primarily as rural residences. Significant off-farm income more than offsets negative farm income on these farms, and total income is higher than for most other farm sales classes. More than 54 percent of all minifarms are in the South, representing a third of all farms in that region.
title: Synthese von polymeren kolloidalen Kristallen auf Basis von Acrylnitril und deren thermische Behandlung zu porösen Kohlenstoffen
Creators: name: Schlander, Annika Maj-Britt
Publisher: name: UNSPECIFIED
Year: 2021

description: Ziel der vorliegenden Arbeit war die Synthese von porösen Kohlenstoffmaterialien aus polyacrylnitrilbasierten Kern-Schale-Partikeln. Poröse Kohlenstoffmaterialien stellen einen wichtigen Baustein für die Forschung in der Batterie- und Superkondensatortechnik sowie in der Katalyse dar. Die Kern-Schale-Partikel können über die starved-feed Emulsionspolymerisation mit gezielt einstellbarer Größe und definierbarem Verhältnis zwischen Kern und Schale synthetisiert werden. Dadurch wird eine vorab definierbare Porengröße für das finale Kohlenstoffmaterial ermöglicht. Während der folgenden thermischen Prozesse wird das polymere Kernmaterial zersetzt und es kann eine poröse Kohlenstoffstruktur erhalten werden. Ausgehend von den Partikeln wurden zwei Wege zur Herstellung von geordneten porösen Kohlenstoffen verfolgt. Zum einen wurden kolloidal kristalline Filme mittels des Schmelze-Scher-Verfahrens hergestellt. Die so erhaltenen Opalfilme wurden zunächst unter oxidativer Atmosphäre stabilisiert und anschließend unter Inertgas verkohlt. Die Stabilisierung wirkt sich dabei stark auf die Optik der Opalfilme aus, was sie auch für optische und sensorische Anwendungen interessant macht. Zum anderen wurden die reinen getrockneten Partikel, die durch den Trocknungsprozess eine hoch geordnete Struktur ausbilden, ebenfalls unter oxidativer Atmosphäre stabilisiert. Anschließend wurde eine Verkohlung entweder unter inerter oder in aktivierender ammoniakalischer Atmosphäre durchgeführt. Durch letztere solle eine Verbesserung der inneren Oberfläche, sowie der Erhalt des Stickstoffs im finalen Kohlenstoffgerüst gewährleistet werden.
A higher-dimensional view on quantum cosmology
Creators: name: Danielsson, U. H.
name: Panizo, D.
name: Tielemans, R.
name: Van Riet, T.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We argue that the choice of boundary condition for the wave function in quantum cosmology depends on the UV completion of general relativity. We provide an explicit example using a braneworld scenario in which a de Sitter cosmology is induced on the surface of a Coleman-de Luccia bubble in a 5-dimensional AdS space. The corresponding boundary conditions are unambigously fixed by demanding consistency with the known physics of bubble nucleation and this selects the Vilenkin weighting for the amplitude from a 4D viewpoint.
description: 10 pages, including refs: v2 published version with updated refs and small edits throughout
Extinction Corrected Star Formation Rates Empirically Derived from Ultraviolet-Optical Colors
Creators: name: Treyer, Marie
name: Schiminovich, David
name: Johnson, Ben
name: Seibert, Mark
name: Wyder, Ted
name: Barlow, Tom A.
name: Conrow, Tim
name: Forster, Karl
name: Friedman, Peter G.
name: Martin, D. Christopher
name: Morrissey, Patrick
name: Neff, Susan G.
name: Small, Todd
name: Bianchi, Luciana
name: Donas, Jose
name: Heckman, Timothy M.
name: Lee, Young-Wook
name: Madore, Barry F.
name: Milliard, Bruno
name: Rich, R. Michael
name: Szalay, Alex S.
name: Welsh, Barry Y.
name: Yi, Sukyoung K.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Using a sample of galaxies from the Sloan Digital Sky Survey spectroscopic catalog with measured star-formation rates (SFRs) and ultraviolet (UV) photometry from the GALEX Medium Imaging Survey, we derived empirical linear correlations between the SFR to UV luminosity ratio and the UV-optical colors of blue sequence galaxies. The relations provide a simple prescription to correct UV data for dust attenuation that best reconciles the SFRs derived from UV and emission line data. The method breaks down for the red sequence population as well as for very blue galaxies such as the local ``supercompact'' UV luminous galaxies and the majority of high redshift Lyman Break Galaxies which form a low attenuation sequence of their own.
description: 20 pages, 11 figures, accepted for publication in the ApJS GALEX special issue
Additional file 1 of Multi-omics analysis reveals the key factors involved in the severity of the Alzheimer’s disease
Creators: name: Meng, Lingqi
name: Jin, Han
name: Yulug, Burak
name: Altay, Ozlem
name: Li, Xiangyu
name: Hanoglu, Lutfu
name: Cankaya, Seyda
name: Coskun, Ebru
name: Idil, Ezgi
name: Nogaylar, Rahim
name: Ozsimsek, Ahmet
name: Shoaie, Saeed
name: Turkez, Hasan
name: Nielsen, Jens
name: Zhang, Cheng
name: Borén, Jan
name: Uhlén, Mathias
name: Mardinoglu, Adil
Publisher: name: figshare
Year: 2024
Subjects: subject: Biochemistry
subject: Microbiology
subject: FOS: Biological sciences
subject: Genetics
subject: Neuroscience
subject: Biotechnology
subject: Ecology
subject: Biological Sciences not elsewhere classified
subject: Mental Health
subject: Hematology

description: Supplementary Material 1: Supplementary Figure 1. Correlation analysis between significant clinical parameters and the top 40 plasma proteins. Supplementary Figure 2. Correlation plots depicting the relationship between ADAS-Cog scores and the protein levels of SKAP1, VPS37A, CALCOCO1, and SF3B4, respectively. Supplementary Figure 3. Heat map displaying all the plasma metabolites that are significantly altered between different patient groups. (A) Amino acids and their derivatives. (B) Lipids. Supplementary Figure 4. Significant differences in gut and saliva species abundance between different patient groups. (A) Gut species that significantly differ between the high and moderate ADAS-Cog groups. (B) Gut species that significantly differ between the moderate and low ADAS-Cog groups. (C) Saliva species that significantly differ between the high and moderate ADAS-Cog groups. (D) Saliva species that significantly differ between the moderate and low ADAS-Cog groups. (E) Gut species that significantly differ between the high and moderate ADAS-Cog groups with MetaPhlAn3. (F) Saliva species that significantly differ between the high and moderate ADAS-Cog groups with MetaPhlAn3. Supplementary Figure 5. Correlation analyses between different omics data. (A) Correlation between top 10 plasma proteins and top 40 plasma metabolites. (B) Correlation between top 10 plasma proteins and top 20 gut microbiomes. (C) Correlation between top 10 plasma proteins and top 20 saliva microbiomes. (D) Correlation between top 10 plasma metabolites and top 20 gut microbiomes. (E) Correlation between top 10 plasma metabolites and top 20 saliva microbiomes. (F) Correlation between top 20 gut and saliva microbiomes. Supplementary Figure 6. (A) Feature importance as identified on the testing (day 84) dataset using the XGBoost algorithm. (B) Unsupervised learning using MOFA+ to present feature variance. (C) Feature importance analysis of clinical parameters among the top 5 factors. (D) Feature importance analysis of plasma protein parameters among the top 5 factors. (E) Feature importance analysis of plasma metabolite parameters among the top 5 factors.
Open quantum dynamics via environmental monitoring
Creators: name: Hornberger, Klaus
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A general method is discussed to obtain Markovian master equations which describe the interaction with the environment in a microscopic and non-perturbative fashion. It is based on combining time-dependent scattering theory with the concept of continuous quantum measurements. The applications to the case of a Brownian point particle and to the case of a complex molecule, both in the presence of a gaseous environment, are outlined.
description: 11 pages, 3 figures. Talk at DICE 2006; to appear in J. Phys.: Conf. Ser. (2007)
Non-Convex Tensor Low-Rank Approximation for Infrared Small Target Detection
Creators: name: Liu, Ting
name: Yang, Jungang
name: Li, Boyang
name: Xiao, Chao
name: Sun, Yang
name: Wang, Yingqian
name: An, Wei
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Infrared small target detection is an important fundamental task in the infrared system. Therefore, many infrared small target detection methods have been proposed, in which the low-rank model has been used as a powerful tool. However, most low-rank-based methods assign the same weights for different singular values, which will lead to inaccurate background estimation. Considering that different singular values have different importance and should be treated discriminatively, in this paper, we propose a non-convex tensor low-rank approximation (NTLA) method for infrared small target detection. In our method, NTLA regularization adaptively assigns different weights to different singular values for accurate background estimation. Based on the proposed NTLA, we propose asymmetric spatial-temporal total variation (ASTTV) regularization to achieve more accurate background estimation in complex scenes. Compared with the traditional total variation approach, ASTTV exploits different smoothness intensities for spatial and temporal regularization. We design an efficient algorithm to find the optimal solution of our method. Compared with some state-of-the-art methods, the proposed method achieves an improvement in terms of various evaluation metrics. Extensive experimental results in various complex scenes demonstrate that our method has strong robustness and low false-alarm rate. Code is available at https://github.com/LiuTing20a/ASTTV-NTLA.
description: This paper is accepted by IEEE Transactions on Geoscience and Remote Sensing
Conformal Windows of SU(N) Gauge Theories, Higher Dimensional Representations and The Size of The Unparticle World
Creators: name: Ryttov, Thomas A.
name: Sannino, Francesco
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present the conformal windows of SU(N) supersymmetric and nonsupersymmetric gauge theories with vector-like matter transforming according to higher irreducible representations of the gauge group. We determine the fraction of asymptotically free theories expected to develop an infrared fixed point and find that it does not depend on the specific choice of the representation. This result is exact in supersymmetric theories while it is an approximate one in the nonsupersymmetric case. The analysis allows us to size the unparticle world related to the existence of underlying gauge theories developing an infrared stable fixed point. We find that exactly 50 % of the asymptotically free theories can develop an infrared fixed point while for the nonsupersymmetric theories it is circa 25 %. When considering multiple representations, only for the nonsupersymmetric case, the conformal regions quickly dominate over the nonconformal ones. For four representations, 70 % of the asymptotically free space is filled by the conformal region. According to our theoretical landscape survey the unparticle physics world occupies a sizable amount of the particle world, at least in theory space, and before mixing it (at the operator level) with the nonconformal one.
description: RevTeX, 18 pages, 2 figures
Asymmetric Circular Graph with Hosoya Index and Negative Continued Fractions
Creators: name: Komatsu, Takao
Publisher: name: arXiv
Year: 2021
Subjects: subject: Combinatorics (math.CO)
subject: Number Theory (math.NT)
subject: FOS: Mathematics

description: It has been known that the Hosoya index of caterpillar graph can be calculated as the numerator of the simple continued fraction. Recently, the author \cite{Komatsu2020} introduces a more general graph called caterpillar-bond graph and shows that its Hosoya index can be calculated as the numerator of the general continued fraction. In this paper, we show how the Hosoya index of the graph with non-uniform ring structure can be calculated from the negative continued fraction. We also give the relation between some radial graphs and multidimensional continued fractions in the sense of the Hosoya index.
LOFAR insight in CREs propagation in the face-on nearby galaxy NGC 6946
Creators: name: Piotrowska, Julia
name: Chyży, Krzysztof
name: Heesen, Volker
name: Sarrvesh S.Sridhar
name: Jurusik, Wojciech
name: Heald, Georg
Publisher: name: Zenodo
Year: 2019
Subjects: galaxies, Cosmic Ray transport, LOFAR

description: Poster presented at New Perspectives on Galactic Magnetism, Newcastle, UK, 10-14 June.
Diazotrophic behaviour in a non-sterile bioreactor: the effect of O2-availability
Creators: name: Brink, Hendrik
name: Nicol, Willie
name: De Zoete, Yasemin
name: Beukes, Joshua Cornelus
name: Van Rooyen, Ignatius Leopoldus
Publisher: name: University of Pretoria
Year: 2021
Subjects: Chemical engineering not elsewhere classified
Environmental engineering not elsewhere classified

description: Data for Diazotrophic behaviour in a non-sterile bioreactor: the effect of O2-Availability. The study presents one of the only known investigations of operational conditions on diazotrophic growth in a non-sterile bioreactor. In addition, it provides a strong foundation for the development of a Biological Nitrogen Fixation process with scaling potential.
Rational Tate classes
Creators: name: Milne, J. S.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Algebraic Geometry (math.AG)
subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 14C25, 14K15, 11G10

description: In despair, as Deligne (2000) put it, of proving the Hodge and Tate conjectures, we can try to find substitutes. For abelian varieties in characteristic zero, Deligne (1982) constructed a theory of Hodge classes having many of the properties that the algebraic classes would have if the Hodge conjecture were known. In this article I investigate whether there exists a theory of "rational Tate classes" on varieties over finite fields having the properties that the algebraic classes would have if the Hodge and Tate conjectures were known. v3. Submitted version.
A study of Bao Zhao and his poetry : with a complete English translation of his poems
Creators: name: Chen, Robert Shanmu
Publisher: name: University of British Columbia
Year: 2010

description: In Chinese literature the evaluation of Bao Zhao (409-466) of the Liu Song Dynasty has been an age-old controversy. Biographical accounts and literary criticisms on him are unable to avoid partiality, fragmentation, and insubstantiality. Thus this thesis intends to provide a substantial biographical account of Bao Zhao as a Scholar-official, to delineate the mentality of him as a poet and an intellectual, and to offer an integral account of his position in the history of Chinese literature. This thesis consists of a biographical study of Bao Zhao, a complete English translation of his poems, and an analytical study of his poetry. The complete translation is to provide spectrum of Bao Zhao's poetry for a better analytical perspective. After elaborating on various controversial issues of Bap Zhao's life, the biographical study asserts that contrary to the traditional view of him as a humble and insignificant official neglected by his contemporaries and discriminated against by historians, Bao Zhao was an imperial favorite courtier entrusted with power and authority throughout Emperor Xiaowu's reign, a popular belletrist, well-received by the elites of his time, and held in high esteem in the History of the Song Dynastv. The literary study confirms generic achievements of Bao Zhao as a great cultivator of Short Stanzas, Poems in Imitation, the Landscape Poems, Poems on Things and the Frontier Poems, an essential reviver and cultivator of Ballad Songs and Critical Realism, and an epitomizer of the Heptasy1labic Poems and Songs. It then delineates Bao Zhao's understanding of the vicissitudes of life, his conviction of the accessibility of Great Harmony under a wise ruler, his belief of one's responsibility to do his best in life, and his aspirations to serve the world. These engender in his allusive, metaphorical, and allegorical poems a group of heroic, indignant and critical sentiments, and a group of sincere, devoted, and transcendental pathos, the integration of which brings forth the characteristics of Bao Zhao's poetry. The thesis concludes by recognizing Bao Zhao as the most important poet of the Liu Song Dynasty and one of the major poets in the history of Chinese 1iterature.
Generic Advertising of Farm Products
Creators: name: Morrison, Rosanna Mentzer
name: Morrison, Rosanna Mentzer
Publisher: name: Unknown
Year: 1984
Subjects: subject: Agricultural and Food Policy
subject: Marketing
subject: FOS: Economics and business
subject: Generic advertising
subject: promotion
subject: agricultural commodities

description: In 1982, American producers spent about $44 million on domestic generic promotion under Federal programs. Producers also spent about $22 million promoting U.S. farm products overseas. The U.S. Department of Agriculture (USDA) contributed an additional $19 million for promoting U.S. products abroad. Commodity groups spent $91 million generically promoting their products under State-legislated programs in 1979. Generic advertising promotes a type of food, such as milk, orange juice, or eggs, rather than a specific company's product. About 85 percent of all generic advertising and promotion is financed through producer agreements under various Federal and State programs. The effectiveness of generic advertising may depend on such factors as timing, the supply of the product, and prices of substitute products. Questions remain about the effectiveness of generic advertising programs and the costs and benefits to consumers.
Digitized Adiabatic Quantum Factorization
Creators: name: Hegade, Narendra N.
name: Paul, Koushik
name: Albarrán-Arriagada, Francisco
name: Chen, Xi
name: Solano, Enrique
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Quantum integer factorization is a potential quantum computing solution that may revolutionize cryptography. Nevertheless, a scalable and efficient quantum algorithm for noisy intermediate-scale quantum computers looks far-fetched. We propose an alternative factorization method, within the digitized-adiabatic quantum computing paradigm, by digitizing an adiabatic quantum factorization algorithm enhanced by shortcuts to adiabaticity techniques. We find that this fast factorization algorithm is suitable for available gate-based quantum computers. We test our quantum algorithm in an IBM quantum computer with up to six qubits, surpassing the performance of the more commonly used factorization algorithms on the long way towards quantum advantage.
description: 6+4 pages, 4+2 figures, 1 table
Search for Radiative Decays of Upsilon(1S) into eta and eta'
Creators: name: Athar, S. B.
name: Collaboration, CLEO
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We report on a search for the radiative decay of Upsilon(1S) to the pseudoscalar mesons eta and etaprime in 21.2 +/- 0.2 times 10^6 Upsilon(1S) decays collected with the CLEO III detector at the Cornell Electron Storage Ring (CESR). The eta meson was reconstructed in the three modes eta to gamma-gamma, eta to pi+pi-pi0 and eta to 3pi0. The etaprime meson was reconstructed in the mode etaprime to pi+ pi- eta with eta decaying through any of the above three modes, and also etaprime to gamma rho, where rho decays to pi^+ pi^-. Five out of the seven sub-modes are found to be virtually background-free. In four of them we find no signal candidates and in one Upsilon(1S) to gamma-etaprime, etaprime to pi+ pi- eta, eta to pi+pi-pi0 there are two good signal candidates, which is insufficient evidence to claim a signal. The other two sub-modes eta to gamma-gamma and etaprime to gamma rho are background limited, and show no excess of events in their signal regions. We combine the results from different channels and obtain upper limits at the 90% C.L. which are B(Upsilon(1S) to gamma eta) < 1.0 times 10^-6 and B(Upsilon(1S) to gamma etaprime) < 1.9 times 10^-6. Our limits are an order of magnitude tighter than the previous ones and below the predictions made by some theoretical models.
description: 14 pages postscript,also available through http://www.lns.cornell.edu/public/CLNS/2007/, Submitted to PRD
How tight is the Lieb-Oxford bound?
Creators: name: Odashima, Mariana M.
name: Capelle, K.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: Density-functional theory requires ever better exchange-correlation (xc) functionals for the ever more precise description of many-body effects on electronic structure. Universal constraints on the xc energy are important ingredients in the construction of improved functionals. Here we investigate one such universal property of xc functionals: the Lieb-Oxford lower bound on the exchange-correlation energy, $E_{xc}[n] \ge -C \int d^3r n^{4/3}$, where $C\leq C_{LO}=1.68$. To this end, we perform a survey of available exact or near-exact data on xc energies of atoms, ions, molecules, solids, and some model Hamiltonians (the electron liquid, Hooke's atom and the Hubbard model). All physically realistic density distributions investigated are consistent with the tighter limit $C \leq 1$. For large classes of systems one can obtain class-specific (but not fully universal) similar bounds. The Lieb-Oxford bound with $C_{LO}=1.68$ is a key ingredient in the construction of modern xc functionals, and a substantial change in the prefactor $C$ will have consequences for the performance of these functionals.
description: 10 pages, 3 figures
Algorithms, Housing Discrimination, and the New Disparate Impact Rule
Creators: name: Foggo, Virginia
name: Villasenor, John
Publisher: name: Science and Technology Law Review
Year: 2021

description: In the coming years, algorithms—often but not always powered by artificial intelligence—will experience increasing adoption in relation to home loan approvals, real estate marketing and sales, and zoning decisions. While algorithms offer many potential advantages, they also bring the risk of perpetuating or even amplifying longstanding patterns of housing-related discrimination. When that occurs, disparate impact litigation under the Fair Housing Act (FHA) will be a key mechanism for seeking redress. This Article aims to help ensure that FHA disparate impact claims can serve as an effective tool to combat housing discrimination in an era when an increasing number of decisions will be made by algorithms. This issue is particularly timely in light not only of the broader imperative to ensure that federal antidiscrimination frameworks remain effective as the technology used in the housing sector evolves, but also because the Department of Housing and Urban Development has recently published a final rule that, subject to a pending court challenge, will codify a set of explicit steps for litigants to follow in cases involving allegations of algorithm-based housing discrimination. Depending on its interpretation in the courts, the new rule risks erecting very high barriers to future FHA plaintiffs in light of the proprietary nature of the algorithms they will be challenging. To address this, the Article analyzes Supreme Court cases in relation to both FHA disparate impact litigation as well as pleading standards more generally and presents a roadmap which would allow plaintiffs to access the information necessary to address the pleading requirements of the proposed rule while simultaneously protecting the rights of defendants and avoiding overburdening courts.
description: Science and Technology Law Review, Vol. 22 No. 1 (2020): 2020-2021
Inductive Definition and Domain Theoretic Properties of Fully Abstract
Creators: name: Sazonov, Vladimir
Publisher: name: arXiv
Year: 2007
Subjects: subject: Logic in Computer Science (cs.LO)
subject: FOS: Computer and information sciences
subject: F.3.2

description: A construction of fully abstract typed models for PCF and PCF^+ (i.e., PCF + "parallel conditional function"), respectively, is presented. It is based on general notions of sequential computational strategies and wittingly consistent non-deterministic strategies introduced by the author in the seventies. Although these notions of strategies are old, the definition of the fully abstract models is new, in that it is given level-by-level in the finite type hierarchy. To prove full abstraction and non-dcpo domain theoretic properties of these models, a theory of computational strategies is developed. This is also an alternative and, in a sense, an analogue to the later game strategy semantics approaches of Abramsky, Jagadeesan, and Malacaria; Hyland and Ong; and Nickau. In both cases of PCF and PCF^+ there are definable universal (surjective) functionals from numerical functions to any given type, respectively, which also makes each of these models unique up to isomorphism. Although such models are non-omega-complete and therefore not continuous in the traditional terminology, they are also proved to be sequentially complete (a weakened form of omega-completeness), "naturally" continuous (with respect to existing directed "pointwise", or "natural" lubs) and also "naturally" omega-algebraic and "naturally" bounded complete -- appropriate generalisation of the ordinary notions of domain theory to the case of non-dcpos.
description: 50 pages
Stretchable optical diffraction grating from poly(acrylic acid)/polyethylene oxide stereocomplex
Creators: name: He, Jinghan
name: Kovach, Andre
name: Wang, Yunxiang
name: Wang, William
name: Wu, Wei
name: Armani, Andrea M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Optical gratings are a key component in many spectroscopy, communications, and imaging systems. While initially static elements, advances in optical materials have enabled dynamically tunable gratings to be designed. One common tuning strategy is relying on mechanical deformation of the grating pitch to modify the diffraction pattern. To date, most mechanically adaptive optical gratings consist of a hybrid system where rigid moieties are patterned on an elastomeric substrate. In the present work, we demonstrate an all-polymer tunable grating that is fabricated using replica molding from the poly(acrylic acid) (PAA)/polyethylene oxide (PEO) polymer stereocomplex. PAA/PEO pristine films exhibit excellent optical transmittance at or above 80% from 500 nm to 1400 nm and stretchability over 800% strain. The experimental studies on the changes of diffraction mode distances with respect to the applied strains agree well with the finite-difference time-domain (FDTD) theoretical modeling.
Contracting Cosmologies and the Swampland
Creators: name: Bernardo, Heliudson
name: Brandenberger, Robert
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We consider the cosmology obtained using scalar fields with a negative potential energy, such as employed to obtain an Ekpyrotic phase of contraction. Applying the covariant entropy bound to the tower of states dictated by the distance conjecture, we find that the relative slope of the potential $|V^{\prime}| / |V|$ is bounded from below by a constant of the order one in Planck units. This is consistent with the requirement to obtain slow Ekpyrotic contraction. We also derive a refined condition on the potential which holds near local minima of a negative potential.
description: 8 pages, 2 figures; v2: 14 pages, 2 figures; references and comments on conformal diagrams added; matches published version
Τεχνικές μηχανικής όρασης και αναγνώρισης προτύπων για την αλληλεπίδραση ανθρώπου-υπολογιστή:
Creators: name: Ιωσηφίδης, Αλέξανδρος Ι.
Publisher: name: Aristotle University of Thessaloniki
Year: 2013
Subjects: Όραση Μηχανής
Αναγνώριση Προτύπων
Αλληλεπίδραση Ανθρώπου-Υπολογιστή
Επεξεργασία εικονοσειρών
Computer Vision
Pattern Recognition
Human-Computer Interaction
Video processing

description: Σκοπός της διατριβής ήταν ο σχεδιασμός τεχνικών αναγνώρισης προτύπων και επεξεργασίας εικονοσειρών για την ανάπτυξη εφαρμογών αλληλεπίδρασης ανθρώπου-υπολογιστή. Μελετήθηκαν τα προβλήματα της αυτόματης αναγνώρισης ανθρώπινων κινήσεων και ταυτο-ποίησης ατόμων με βάση τον τρόπο εκτέλεσης κινήσεων. Προτάθηκαν πρωτότυπες τεχνικές αναπαράστασης εικονοσειρών κίνησης οι οποίες είναι σε θέση να κάνουν χρήση ενισχυμένης οπτικής πληροφορίας προερχόμενη από συστήματα πολλαπλών καμερών. Προτάθηκαν πρωτό-τυπες τεχνικές ταξινόμησης βασισμένες σε τεχνικές διακριτικής ανάλυσης, τεχνιτών νευρω-νικών δικτύων, δυναμικής ταξινόμησης και πιθανοκρατικών μοντέλων. Τέλος, δείχθηκε ότι οι προτεινόμενες προσεγγίσεις μπορούν να χρησιμοποιηθούν και για την αναγνώριση ανθρώπινων συναισθημάτων με βάση τις εκφράσεις προσώπου.
description: The aim of the present thesis was to design pattern recognition and video processing techniques for the development of human-computer interaction applications. We studied the problems of automatic human action recognition and person identification based on actions. We proposed novel action video representation techniques that can exploit enriched visual information coming from multi-camera setups. We proposed novel classification techniques based on discriminant analysis, artificial neural networks and dynamic classification techniques and probabilistic models. Finally, it has been shown that the proposed approaches can be employed for the recognition of human emotions based on facial expressions.
Multidimensional supernova simulations with approximative neutrino transport. II. Convection and the advective-acoustic cycle in the supernova core
Creators: name: Scheck, L.
name: Janka, H. -Th.
name: Foglizzo, T.
name: Kifonidis, K.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: By 2D hydrodynamic simulations including a detailed equation of state and neutrino transport, we investigate the interplay between different non-radial hydrodynamic instabilities that play a role during the postbounce accretion phase of collapsing stellar cores. The convective mode of instability, which is driven by negative entropy gradients caused by neutrino heating or by time variations of the shock strength, can be identified clearly by the development of typical Rayleigh-Taylor mushrooms. However, in cases where the gas in the postshock region is rapidly advected towards the gain radius, the growth of such a buoyancy instability can be suppressed. In such a situation the shocked flow nevertheless can develop non-radial asymmetry with an oscillatory growth of the amplitude. This phenomenon has been termed ``standing accretion shock instability'' (SASI). It is shown here that the SASI oscillations can trigger convective instability and like the latter they lead to an increase of the average shock radius and of the mass in the gain layer. Both hydrodynamic instabilities in combination stretch the advection time of matter through the neutrino-heating layer and thus enhance the neutrino energy deposition in support of the neutrino-driven explosion mechanism. A rapidly contracting and more compact nascent NS turns out to be favorable for explosions, because the accretion luminosity and neutrino heating are larger and the growth rate of the SASI is higher. Moreover, we show that the oscillation period of the SASI and a variety of other features in our simulations agree with estimates for the advective-acoustic cycle (AAC), in which perturbations are carried by the accretion flow from the shock to the neutron star and pressure waves close an amplifying global feedback loop. (abridged)
description: 23 pages, 20 figures; revised version with extended Sect.5, accepted by Astronomy & Astrophysics; high-resolution images can be obtained upon request