cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Supplementary TextS26 from Comparative transcriptomic analysis of the mechanisms underpinning ageing and fecundity in social insects
Creators: name: Korb, Judith
name: Meusemann, Karen
name: Aumer, Denise
name: Bernadou, Abel
name: Elsner, Daniel
name: Feldmeyer, Barbara
name: Foitzik, Susanne
name: Heinze, Jürgen
name: Libbrecht, Romain
name: Silu Lin
name: Majoe, Megha
name: Kuhn, José Manuel Monroy
name: Nehring, Volker
name: Negroni, Matteo A.
name: Paxton, Robert J.
name: Séguret, Alice C.
name: Stoldt, Marah
name: Flatt, Thomas
Publisher: name: The Royal Society
Year: 2021
Subjects: subject: Molecular Biology
subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: 60801 Animal Behaviour

description: This Supplement includes Supplementary Methods and Results; Table S4; List of Captions for Supplementary Tables and Supplementary Figures; List of Supplementary Archives deposited at DRYAD and Supplementary References.
Spacetime Paths as a Whole
Creators: name: Nelson-Isaacs, Sky
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The mathematical similarities between non-relativistic wavefunction propagation in quantum mechanics and image propagation in scalar diffraction theory are used to develop a novel understanding of time and paths through spacetime as a whole. It is well known that Feynman's original derivation of the path integral formulation of non-relativistic quantum mechanics uses time-slicing to calculate amplitudes as sums over all possible paths through space, but along a definite curve through time. Here, a 3+1D spacetime wave distribution and its 4-momentum dual are formally developed which have no external time parameter and therefore cannot change or evolve in the usual sense. Time is thus seen "from the outside". A given 3+1D momentum representation of a system encodes complete dynamical information, describing the system's spacetime behavior as a whole. A comparison is made to the mathematics of holograms, and properties of motion for simple systems are derived.
Orthonormal Filters for Identification in Active Control Systems
Creators: name: Mayer, Dirk
Publisher: name: arXiv
Year: 2021
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Many active noise and vibration control systems require models of the control paths. When the controlled system changes slightly over time, adaptive digital filters for the identification of the models are useful. This paper aims at the investigation of a special class of adaptive digital filters: Orthonormal filter banks possess the robust and simple adaptation of the widely applied Finite Impulse Response (FIR) filters, but at a lower model order, which is important when considering implementation on embedded systems. However, the filter banks require prior knowledge about the resonance frequencies and damping of the structure. This knowledge can be supposed to be of limited precision, since in many practical systems, uncertainties in the structural parameters exist. In this work, a procedure using a number of training systems to find the fixed parameters for the filter banks is applied. The effect of uncertainties in the prior knowledge on the model error is examined both with a basic example and in an experiment. Furthermore, the possibilities to compensate for the imprecise prior knowledge by a higher filter order are investigated. Also comparisons with FIR filters are implemented in order to assess the possible advantages of the orthonormal filter banks. Numerical and experimental investigations show that significantly lower computational effort can be reached by the filter banks under certain conditions.
description: 15 pages, 10 figures
Structural Beauty: A Structure-based Approach to Quantifying the Beauty of an Image
Creators: name: Jiang, Bin
name: de Rijke, Chris
Publisher: name: arXiv
Year: 2021
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: To say that beauty is in the eye of the beholder means that beauty is largely subjective so varies from person to person. While the subjectivity view is commonly held, there is also an objectivity view that seeks to measure beauty or aesthetics in some quantitative manners. Christopher Alexander has long discovered that beauty or coherence highly correlates to the number of subsymmetries or substructures and demonstrated that there is a shared notion of beauty - structural beauty - among people and even different peoples, regardless of their faiths, cultures, and ethnicities. This notion of structural beauty arises directly out of living structure or wholeness, a physical and mathematical structure that underlies all space and matter. Based on the concept of living structure, this paper develops an approach for computing the structural beauty or life of an image (L) based on the number of automatically derived substructures (S) and their inherent hierarchy (H). To verify this approach, we conducted a series of case studies applied to eight pairs of images including Leonardo da Vinci's Mona Lisa and Jackson Pollock's Blue Poles. We discovered among others that Blue Poles is more structurally beautiful than the Mona Lisa, and traditional buildings are in general more structurally beautiful than their modernist counterparts. This finding implies that goodness of things or images is largely a matter of fact rather than an opinion or personal preference as conventionally conceived. The research on structural beauty has deep implications on many disciplines, where beauty or aesthetics is a major concern such as image understanding and computer vision, architecture and urban design, humanities and arts, neurophysiology, and psychology. Keywords: Life; wholeness; figural goodness; head/tail breaks; computer vision
description: 15 pages, 8 figures, 4 tables
Boltzmann Entropy : Probability and Information
Creators: name: Chakrabarti, C. G.
name: Chakrabarty, Indranil
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: We have presented first an axiomatic derivation of Boltzmann entropy on the basis of two axioms consistent with two basic properties of thermodynamic entropy. We have then studied the relationship between Boltzmann entropy and information along with its physical significance.
description: Published in Romanian Journal of Physics
Multiplicity of young stars in and around R Corona Australis
Creators: name: Köhler, R.
name: Neuhäuser, R.
name: Krämer, S.
name: Leinert, Ch.
name: Ott, T.
name: Eckart, A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The R CrA star-forming region has a small dark cloud with quite a number of protostars, T Tauri stars, and some Herbig Ae/Be stars, plus a number of weak-line T Tauri stars around the cloud found by ROSAT follow-up observations. We searched for multiples among the young stars in and around the R CrA cloud in order to investigate multiplicity in this region. We performed interferometric and imaging observations with the speckle camera SHARP I at the ESO 3.5m NTT and adaptive optics observation with ADONIS at the ESO 3.6m telescope, all in the near-infrared bands JHK obtained in the years 1995, 2000, and 2001. We found 13 new binaries among the young stars in CrA between 0.13 arcsec (the diffraction limit) and 6 arcsec (set as an upper separation limit to avoid contamination by chance alignments). While most multiples in CrA are binaries, there are also one quadruple (TY CrA), and one triple (HR 7170) which may form a quintuple together with the binary HR 7169. One of the newly detected companions with a large magnitude difference found near the M3-5 type T Tauri star [MR 81] Ha 17 could be a brown dwarf or an infrared companion with an edge-on disk. Among seven Herbig Ae/Be stars in CrA, six are multiple. The multiplicity frequency in CrA is as high as in similar star forming regions. By comparing with the period distribution of main-sequence stars and extrapolating to separations not probed in this survey, we conclude that the companion-star frequency is 95+/-23 %; i.e. the average number of companions per primary is 0.95.
description: 10 pages, 5 figures, accepted by by Astronomy and Astrophysics
Some properties of evolving wormhole geometries within nonlinear electrodynamics
Creators: name: Arellano, Aaron V. B.
name: Breton, Nora
name: Garcia-Salcedo, Ricardo
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this paper we review some properties for the evolving wormhole solution of Einstein equations coupled with nonlinear electrodynamics. We integrate the geodesic equations in the effective geometry obeyed by photons; we check out the weak field limit and find the traversability conditions. Then we analyze the case when the lagrangian depends on two electromagnetic invariants and it turns out that there is not a more general solution within the assumed geometry.
description: 13 pages, 3(ps) figures
Computer-assisted problem solving : the interaction between conceptual tempo and feedback
Creators: name: Wellburn, Elizabeth
Publisher: name: University of British Columbia
Year: 2010

description: A study was conducted with 76 grade seven students to determine the interaction between conceptual tempo (defined as reflectivity versus impulsivity) and three levels of instruction (no strategy instruction, strategy instruction fed forward, and strategy instruction in a feedback format) on a computer generated transformation problem (a maze). As has been found previously, reflectives have an advantage over impulsives in problem solving performance. Performance was based on several criteria, including speed and accuracy of a first attempt at the problem, speed and accuracy in a direct repeat of the problem and speed and accuracy in a related problem where generalizable skills could have been transferred. In all cases, different instructional presentations had no effect if the total population was considered, but some strong interactions were found between instruction and conceptual tempo. This led to a conclusion that aptitude-treatment interactions should be considered in problem-solving research. Some exploratory observations regarding other aspects of individual characteristics, such, as gender differences in computer anxiety and differences in cognitive processing of problems for the different conceptual tempos are also discussed.
Learning and innovative elements of strategy adoption rules expand cooperative network topologies
Creators: name: Wang, Shijun
name: Szalay, Mate S.
name: Zhang, Changshui
name: Csermely, Peter
Publisher: name: arXiv
Year: 2007
Subjects: subject: Molecular Networks (q-bio.MN)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: Cooperation plays a key role in the evolution of complex systems. However, the level of cooperation extensively varies with the topology of agent networks in the widely used models of repeated games. Here we show that cooperation remains rather stable by applying the reinforcement learning strategy adoption rule, Q-learning on a variety of random, regular, small-word, scale-free and modular network models in repeated, multi-agent Prisoners Dilemma and Hawk-Dove games. Furthermore, we found that using the above model systems other long-term learning strategy adoption rules also promote cooperation, while introducing a low level of noise (as a model of innovation) to the strategy adoption rules makes the level of cooperation less dependent on the actual network topology. Our results demonstrate that long-term learning and random elements in the strategy adoption rules, when acting together, extend the range of network topologies enabling the development of cooperation at a wider range of costs and temptations. These results suggest that a balanced duo of learning and innovation may help to preserve cooperation during the re-organization of real-world networks, and may play a prominent role in the evolution of self-organizing, complex systems.
description: 14 pages, 3 Figures + a Supplementary Material with 25 pages, 3 Tables, 12 Figures and 116 references
Effective Search Templates for a Primordial Stochastic Gravitational Wave Background
Creators: name: Chiba, Takeshi
name: Himemoto, Yoshiaki
name: Yamaguchi, Masahide
name: Yokoyama, Jun'ichi
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We calculate the signal-to-noise ratio (SNR) of the stochastic gravitational-wave background in an extreme case that its spectrum has a sharp falloff with its amplitude close to the detection threshold. Such a spectral feature is a characteristic imprint of the change in the number of relativistic degrees of freedom on the stochastic background generated during inflation in the early Universe. We find that, although SNR is maximal with the correct template which is proportional to the assumed real spectrum, its sensitivity to the shape of template is fairly weak indicating that a simple power-law template is sufficient to detect the signature.
description: 13 pages, 4 figures, final version to be published in PRD
Bayesian Model of Communication for Partially Observable Multi-agent Environment
Creators: name: Adhikari, Sarit
Publisher: name: University of Illinois at Chicago
Year: 2024

description: We study the problem of communication and interaction among theory of mind (ToM) agents acting in a partially observable stochastic environment under the principled framework of Communicative Interactive Partially Observable Markov Decision Processes (CIPOMDPs). Under the formalism of CIPOMDPs, agents higher in the ToM hierarchy can exchange messages. However, the agent at the bottom of the cognitive hierarchy cannot inherently model other agents and cannot participate in the exchange of messages. To address this, we initially assume a fixed discrete message distribution for agents at the bottom of the cognitive hierarchy, which can be folded into the observation function. Leveraging this assumption, we employ an offline point-based value iteration approach for solving CIPOMDPs. We show results on several variants of the multi-agent tiger game and establish the usefulness of CIPOMDPs, particularly in scenarios when the agents' preferences do not align. Unsurprisingly, it may be optimal for agents to attempt to mislead others if their preferences are not aligned. But it turns out the higher depth of reasoning allows an agent to detect insincere communication and to guard against it. Specifically, in some scenarios, the agent can distinguish a truthful friend from a deceptive foe when the received message contradicts the agent’s observations, even when the received message does not directly reveal the opponent type. Further, we propose a Bayesian learning methodology for the literal listener. The agent models and learns the initially unknown message generation mechanism by recording the counts of messages received in each state during interaction with the environment. We first propose parameterization of message distribution and then the Bayesian update procedure which is integrated alongside the usual POMDP belief update and can be approximated using a particle filtering approach. Then, we derive an error introduced by assuming a finite approximate model and discuss the challenges of applying value iteration in bounded but large state space. We empirically study the properties of lit-POMDP and utilizing the d-step lookahead approach, we study the behavior of lit-POMDP and CIPOMDP modeling a lit-POMDP. Specifically, we consider an instance of a deceptive persuasion problem where the literal listener agent is susceptible to bait and switch strategy by a smarter omniscient agent. Finally, we discuss the Monte Carlo tree search-based approach to CIPOMDPs, which provides scalability for a higher time horizon but suffers from high variance. As a result, optimality is compromised across nesting levels.
Financial Time Series Analysis of SV Model by Hybrid Monte Carlo
Creators: name: Takaishi, Tetsuya
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistical Finance (q-fin.ST)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Economics and business
subject: FOS: Physical sciences

description: We apply the hybrid Monte Carlo (HMC) algorithm to the financial time sires analysis of the stochastic volatility (SV) model for the first time. The HMC algorithm is used for the Markov chain Monte Carlo (MCMC) update of volatility variables of the SV model in the Bayesian inference. We compute parameters of the SV model from the artificial financial data and compare the results from the HMC algorithm with those from the Metropolis algorithm. We find that the HMC decorrelates the volatility variables faster than the Metropolis algorithm. We also make an empirical analysis based on the Yen/Dollar exchange rates.
description: 8 pages, 3 figures, to be published in LNCS
Financial Time Series Analysis and Forecasting with HHT Feature Generation and Machine Learning
Creators: name: Leung, Tim
name: Zhao, Theodore
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computational Finance (q-fin.CP)
subject: Statistical Finance (q-fin.ST)
subject: FOS: Economics and business
subject: 94A12, 91B84, 62M15

description: We present the method of complementary ensemble empirical mode decomposition (CEEMD) and Hilbert-Huang transform (HHT) for analyzing nonstationary financial time series. This noise-assisted approach decomposes any time series into a number of intrinsic mode functions, along with the corresponding instantaneous amplitudes and instantaneous frequencies. Different combinations of modes allow us to reconstruct the time series using components of different timescales. We then apply Hilbert spectral analysis to define and compute the associated instantaneous energy-frequency spectrum to illustrate the properties of various timescales embedded in the original time series. Using HHT, we generate a collection of new features and integrate them into machine learning models, such as regression tree ensemble, support vector machine (SVM), and long short-term memory (LSTM) neural network. Using empirical financial data, we compare several HHT-enhanced machine learning models in terms of forecasting performance.
description: 28 pages, 10 figures. arXiv admin note: text overlap with arXiv:2105.08133
miR-300 in the imprinted DLK1-DIO3 domain suppresses the migration of bladder cancer by regulating the SP1/MMP9 pathway
Creators: name: Yan, Huaqing
name: Li, Jiangfeng
name: Ying, Yufan
name: Xie, Haiyun
name: Chen, Hong
name: Xu, Xin
name: Zheng, Xiangyi
Publisher: name: Taylor & Francis
Year: 2018
Subjects: subject: Biophysics
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
subject: Science Policy
subject: Infectious Diseases
subject: FOS: Health sciences

description: Emerging research has suggested that miRNAs play a significant role in oncogenesis and tumor progression by regulating multiple molecular pathways. Here, we investigated miR-300, which inhibited bladder cancer (BCa) migration by regulating the SP1/MMP9 pathway. miR-300, belonging to the DLK1-DIO3 miRNA cluster, is frequently expressed at lower levels in BCa tissue than in adjacent normal tissue due to DNA methylation. Reinforced expression of miR-300 significantly suppressed the migration of BCa cells. We carried out a search of online databases to predict potential targets of miR-300. Further studies determined that miR-300 directly targeted SP1 and suppressed its expression by specifically binding to its 3ʹ-untranslated region. Meanwhile, downregulated MMP9 may be the final effector of BCa cell mobility. Small interference RNAs silencing SP1 phenocopied the effects of miR-300 overexpression, while restoration of SP1 expression partially rescued the inhibition of metastasis induced by miR-300 overexpression in BCa cells. In conclusion, we unveiled a miR-300/SP1/MMP9 pathway in BCa. These findings demonstrate that miR-300 is a promising tumor suppressor in BCa.
Introduzione: “Segni dei tempi: da The Man in the Green Blanket a #RhodesMustFall” di Pier Paolo Frassinelli
Creators: name: Cazzato, Luigi Carmine
Publisher: name: ECHO
Year: 2021

description: Abstract not Available
description: ECHO, N. 3 (2021): Lo statuto dell’immagine nel XXI secolo: schermi, rappresentazioni, sparizioni
The Torment and Demise of the United Auto Workers Union as Performed by the Auto Bosses, the Labor Leaders, Counterfeit Radicals, Fictional Revolutionaries, and All Those Who Know They Are Not Innocent Either
Creators: name: Gibson, Rich
Publisher: name: Cultural Logic: A Journal of Marxist Theory & Practice
Year: 2019

description: Cultural Logic: A Journal of Marxist Theory & Practice, Vol 13 (2006)
Descent for quasi-coherent sheaves on stacks
Creators: name: Hollander, Sharon
Publisher: name: arXiv
Year: 2007
Subjects: subject: Algebraic Topology (math.AT)
subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14A20, 18G55, 55U10

description: We give a homotopy theoretic characterization of sheaves on a stack and, more generally, a presheaf of groupoids on an arbitary small site C. We use this to prove homotopy invariance and generalized descent statements for categories of sheaves and quasi-coherent sheaves. As a corollary we obtain an alternate proof of a generalized change of rings theorem of Hovey.
description: 20 pages
Physical constraints in polymer modeling of chromatin associations with the nuclear periphery at kilobase scale
Creators: name: Brunet, Annaël
name: Destainville, Nicolas
name: Collas, Philippe
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biophysics
subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: 60506 Virology

description: Interactions of chromatin with the nuclear lamina imposes a radial genome distribution important for nuclear functions. How physical properties of chromatin affect these interactions is unclear. We used polymer simulations to model how physical parameters of chromatin affect its interaction with the lamina. Impact of polymer stiffness is greater than stretching on its configurations at the lamina; these are manifested as trains describing extended interactions, and loops describing desorbed regions . Conferring an attraction potential leads to persistent interaction and adsorption-desorption regimes manifested by fluctuations between trains and loops. These are modulated by polymer stiffness and stretching, with a dominant impact of stiffness on resulting structural configurations. We infer that flexible euchromatin is more prone to stochastic interactions with lamins than rigid heterochromatin characterizing constitutive LADs. Our models provide insights on the physical properties of chromatin as a polymer which affect the dynamics and patterns of interactions with the nuclear lamina.
Global polarization of QGP in non-central heavy ion collisions at high energies
Creators: name: Liang, Zuo-tang
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Due to the presence of a large orbital angular momentum of the parton system produced at the early stage of non-central heavy-ion collisions, quarks and anti-quarks are shown to be polarized in the direction opposite to the reaction plane which is determined by the impact-parameter and the beam momentum. The global quark polarization via elastic scattering was first calculated in an effective static potential model, then using QCD at finite temperature with the hard-thermal-loop re-summed gluon propagator. The measurable consequences are discussed. Global hyperon polarization from the hadronization of polarized quarks are predicted independent of the hadronization scenarios. It has also been shown that the global polarization of quarks and anti-quarks leads also to spin alignment of vector mesons. Dedicated measurements at RHIC are underway and some of the preliminary results are obtained. In this presentation, the basic idea and main results of global quark polarization are presented. The direct consequences such as global hyperon polarization and spin alignment are summarized.
description: plenary talk at the 19th International Conference on Ultra-Relativistic Nucleus-Nucleus Collisions (QM2006), Shanghai, China, November 14-20, 2006
HP1β carries an acidic linker domain and requires H3K9me3 for phase separation
Creators: name: Qin, Weihua
name: Stengl, Andreas
name: Ugur, Enes
name: Leidescher, Susanne
name: Ryan, Joel
name: Cardoso, M. Cristina
name: Leonhardt, Heinrich
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biophysics
subject: Biochemistry
subject: Space Science
subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified

description: Liquid-liquid phase separation (LLPS) mediated formation of membraneless organelles has been proposed to coordinate biological processes in space and time. Previously, the formation of phase-separated droplets was described as a unique property of HP1α. Here, we demonstrate that the positive net charge of the intrinsically disordered hinge region (IDR-H) of HP1 proteins is critical for phase separation and that the exchange of four acidic amino acids is sufficient to confer LLPS properties to HP1β. Surprisingly, the addition of mono-nucleosomes promoted H3K9me3-dependent LLPS of HP1β which could be specifically disrupted with methylated but not acetylated H3K9 peptides. HP1β mutants defective in H3K9me3 binding were less efficient in phase separationin vitro and failed to accumulate at heterochromatin in vivo. We propose that multivalent interactions of HP1β with H3K9me3-modified nucleosomes via its chromodomain and dimerization via its chromoshadow domain enable phase separation and contribute to the formation of heterochromatin compartments in vivo.
The serendipituous discovery of a short-period eclipsing polar in 2XMMp
Creators: name: Vogel, J.
name: Byckling, K.
name: Schwope, A.
name: Osborne, J. P.
name: Schwarz, R.
name: Watson, M. G.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report the serendipituous discovery of the new eclipsing polar 2XMMp J131223.4+173659. Its striking X-ray light curve attracted immediate interest when we were visually inspecting the source products of the 2XMMp catalogue. This light curve revealed its likely nature as a magnetic cataclysmic variable of AM Herculis (or polar) type with an orbital period of ~92 min, which was confirmed by follow-up optical spectroscopy and photometry. 2XMMp J131223.4+173659 probably has a one-pole accretion geometry. It joins the group of now nine objects that show no evidence of a soft component in their X-ray spectra despite being in a high accretion state, thus escaping ROSAT/EUVE detection. We discuss the likely accretion scenario, the system parameters, and the spectral energy distribution.
description: Accepted for publication in A&A
The distribution of wealth in Canada : its existing pattern and changing trend
Creators: name: Park, Jungwee
Publisher: name: University of British Columbia
Year: 2010

description: The aim of this thesis is to investigate the existing pattern and changing trend of the distribution of wealth in today's Canada. In doing so I explore both theoretical accounts and empirical evidence. First, the theoretical perspectives of both classical (Marx, Durkheim, and Weber) and contemporary (Blumberg, Westergaard and Resler, Porter, and Clement) social thinkers were discussed. The objective of this review was to describe the sociological interpretations and explanations of the distribution of wealth. Second, existing evidence was reviewed and new data was gathered on the wealth distribution in Canada. The existing data came from Osberg, Hunter, Vaillancourt, Rashid, and Oja. New data concerning such issues as welfare state, income disparity, and important wealth components was examined to augment the previously existing data. The Canadian wealth distribution proved to be unequal and to have become slightly more unequal over time. The concluding chapter briefly reviews possible explanations for this set of findings.
Peculiar Features of the Interaction Potential between Hydrogen and Antihydrogen at Intermediate Separations
Creators: name: Lee, Teck-Ghee
name: Wong, Cheuk-Yin
name: Wang, Peter Lee-Shien
Publisher: name: arXiv
Year: 2007
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Atomic and Molecular Clusters (physics.atm-clus)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: We evaluate the interaction potential between a hydrogen and an antihydrogen using the second-order perturbation theory within the framework of the four-body system in a separable two-body basis. We find that the H-Hbar interaction potential possesses the peculiar features of a shallow local minimum located around interatomic separations of r ~ 6 a.u. and a barrier rising at r~5 a.u. Additional theoretical and experimental investigations on the nature of these peculiar features will be of great interest.
description: 13 pages, 6 figures
Gravitational lensing $H_0$ tension from ultralight axion galactic cores
Creators: name: Blum, Kfir
name: Teodori, Luca
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Gravitational lensing time delays offer an avenue to measure the Hubble parameter $H_0$, with some analyses suggesting a tension with early-type probes of $H_0$. The lensing measurements must mitigate systematic uncertainties due to the mass modelling of lens galaxies. In particular, a core component in the lens density profile would form an approximate local mass sheet degeneracy and could bias $H_0$ in the right direction to solve the lensing tension. We consider ultralight dark matter as a possible mechanism to generate such galactic cores. We show that cores of roughly the required properties could arise naturally if an ultralight axion of mass $m\sim10^{-25}$ eV makes up a fraction of order ten percent of the total cosmological dark matter density. A relic abundance of this order of magnitude could come from vacuum misalignment. Stellar kinematics measurements of well-resolved massive galaxies (including the Milky Way) may offer a way to test the scenario. Kinematics analyses aiming to test the core hypothesis in massive elliptical lens galaxies should not, in general, adopt the perfect mass sheet limit, as ignoring the finite extent of an actual physical core could lead to significant systematic errors.
description: 16 double-col pages, 12 figs
Statistical optimisation of culture conditions for biocellulose production by Komagataeibacter sp. PAP1 using soya bean whey
Creators: name: Amornrat Suwanposri
name: Pattaraporn Yukphan
name: Yamada, Yuzo
name: Duangjai Ochaikul
Publisher: name: Maejo University
Year: 2014
Subjects: biocellulose,bacterial cellulose,soya bean whey,Komagataeibacter

description: 1, 8, Maejo International Journal of Science and Technology
FERTILIZER QUALITY CONTROL OF A BULK-BLENDING PLANT USING INTELLIGENT SYSTEMS
Creators: name: Wichian Srichaipanya
name: Pramin Artrit
name: Anucha Sangrung
Publisher: name: Suaranaree University of Technology
Year: 2014
Subjects: Neural networks, fuzzy logic, fertilizer, process control

description: 3, 21, Suranaree Journal of Science and Technology
Cosmological Constraints on Isocurvature and Tensor Perturbations
Creators: name: Kawasaki, Masahiro
name: Sekiguchi, Toyokazu
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We investigate cosmological constraints on primordial isocurvature and tensor perturbations, using recent observations of the cosmic microwave background and the large scale structure. We find that present observations are consistent with purely adiabatic initial conditions for the structure formation under any priors on correlations of isocurvature modes, and upper limits on the contribution of isocurvature and tensor perturbations are presented. We also apply the obtained constraints to some specific theoretical models, axion isocurvature perturbation models and curvaton models, and give some implications for theoretical models.
description: 24 pages, 8 figures
Supplementary Figures from Comparative transcriptomic analysis of the mechanisms underpinning ageing and fecundity in social insects
Creators: name: Korb, Judith
name: Meusemann, Karen
name: Aumer, Denise
name: Bernadou, Abel
name: Elsner, Daniel
name: Feldmeyer, Barbara
name: Foitzik, Susanne
name: Heinze, Jürgen
name: Libbrecht, Romain
name: Silu Lin
name: Majoe, Megha
name: Kuhn, José Manuel Monroy
name: Nehring, Volker
name: Negroni, Matteo A.
name: Paxton, Robert J.
name: Séguret, Alice C.
name: Stoldt, Marah
name: Flatt, Thomas
Publisher: name: The Royal Society
Year: 2021
Subjects: subject: Molecular Biology
subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: 60801 Animal Behaviour

description: This supplement includes Supplementary Figure S1-S17.
Any multipartite entangled state violating Mermin-Klyshko inequality can be distilled for almost all bipartite splits
Creators: name: Lee, Soojoon
name: Lee, Jinhyoung
name: Kim, Jaewan
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the explicit relation between violation of Bell inequalities and bipartite distillability of multi-qubit states. It has been shown that even though for $N\ge 8$ there exist $N$-qubit bound entangled states which violates a Bell inequality [Phys. Rev. Lett. {\bf 87}, 230402 (2001)], for all the states violating the inequality there exists at least one splitting of the parties into two groups such that pure-state entanglement can be distilled [Phys. Rev. Lett. {\bf 88}, 027901 (2002)]. We here prove that for all $N$-qubit states violating the inequality the number of distillable bipartite splits increases exponentially with $N$, and hence the probability that a randomly chosen bipartite split is distillable approaches one exponentially with $N$, as $N$ tends to infinity. We also show that there exists at least one $N$-qubit bound entangled state violating the inequality if and only if $N\ge 6$.
description: 4 pages, 2 figures
Celastrol suppresses nitric oxide synthases and the angiogenesis pathway in colorectal cancer
Creators: name: Gao, Yanfeng
name: Zhou, Shuang
name: Pang, Lizhi
name: Yang, Juechen
name: Li, Han John
name: Huo, Xiongwei
name: Qian, Steven Y.
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Biochemistry
subject: Space Science
subject: Medicine
subject: Cell Biology
subject: Pharmacology
subject: Chemical Sciences not elsewhere classified
subject: Immunology
subject: FOS: Clinical medicine
subject: Cancer
subject: Virology

description: The thunder god vine (Tripterygium wilfordii Hook. F) is traditionally used for inflammation-related diseases in traditional Chinese medicine. In recent years, celastrol (a natural compound from the root of the thunder god vine) has attracted great interest for its potential anticancer activities. The free radical nitric oxide (NO) is known to play a critical role in colorectal cancer growth by promoting tumour angiogenesis. However, how celastrol influences the NO pathway and its mechanism against colorectal cancer is largely unknown. In this study, we investigated the effects and mechanism of celastrol on nitric oxide synthase (NOS) and the angiogenesis pathway in colorectal cancer. Our data show that celastrol inhibited HT-29 and HCT116 cell proliferation, migration, and NOS activity in the cytoplasm. The antiproliferation activity of celastrol was associated with the inhibition of iNOS and eNOS in colorectal cancer cells. Treatment with celastrol inhibited colorectal cancer cell growth and migration, and was associated with suppression of the expression of key genes (TYMP, CDH5, THBS2, LEP, MMP9, and TNF) and proteins (IL-1b, MMP-9, PDGF, Serpin E1, and TIMP-4) involved in the angiogenesis pathway. In addition, combinational use of celastrol with 5-fluorouracil, salinomycin, 1400 W, and L-NIO showed enhanced inhibition of colorectal cancer cell proliferation and migration. In sum, our study suggests that celastrol could suppress colorectal cancer cell growth and migration, likely through suppressing NOS activity and inhibiting the angiogenesis pathway.
From Impurity Doping to Metallic Growth in Diffusion Doping: Properties and Structure of Ag Doped InAs Nanocrystals
Creators: name: Amit, Yorai
name: Li, Yuanyuan
name: Frenkel, Anatoly I.
name: Banin, Uri
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Tuning of the electronic properties of pre-synthesized colloidal semiconductor nanocrystals (NCs) by doping plays a key role in the prospect of implementing them in printed electronics devices such as transistors, and photodetectors. While such impurity doping reactions have already been introduced, the understanding of the doping process, the nature of interaction between the impurity and host atoms, and the conditions affecting the solubility limit of impurities in nanocrystals are still unclear. Here, we used a post-synthesis diffusion based doping reaction to introduce Ag impurities into InAs NCs. Optical absorption spectroscopy along with analytical inductively coupled plasma mass-spectroscopy (ICP-MS) were used to present a two stage doping model consisting of a "doping region" and a "growth region", depending on the concentration of the impurities in the reaction vessel. X-ray absorption fine-structure (XAFS) spectroscopy was employed to determine the impurity location and correlate between the structural and electronic properties for different sizes of InAs NCs and dopant concentrations. The resulting structural model describes a heterogeneous system where the impurities initially dope the NC, by substituting for In atoms near the surface of the NC, until the "solubility limit" is reached, after which the rapid growth and formation of metallic structures are identified.
description: Paper - 29 pages, 8 figures SI - 24 pages, 19 figures
A Novel Framework for Brain Tumor Detection Based on Convolutional Variational Generative Models
Creators: name: Salama, Wessam M.
name: Shokry, Ahmed
Publisher: name: arXiv
Year: 2022
Subjects: subject: Image and Video Processing (eess.IV)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Brain tumor detection can make the difference between life and death. Recently, deep learning-based brain tumor detection techniques have gained attention due to their higher performance. However, obtaining the expected performance of such deep learning-based systems requires large amounts of classified images to train the deep models. Obtaining such data is usually boring, time-consuming, and can easily be exposed to human mistakes which hinder the utilization of such deep learning approaches. This paper introduces a novel framework for brain tumor detection and classification. The basic idea is to generate a large synthetic MRI images dataset that reflects the typical pattern of the brain MRI images from a small class-unbalanced collected dataset. The resulted dataset is then used for training a deep model for detection and classification. Specifically, we employ two types of deep models. The first model is a generative model to capture the distribution of the important features in a set of small class-unbalanced brain MRI images. Then by using this distribution, the generative model can synthesize any number of brain MRI images for each class. Hence, the system can automatically convert a small unbalanced dataset to a larger balanced one. The second model is the classifier that is trained using the large balanced dataset to detect brain tumors in MRI images. The proposed framework acquires an overall detection accuracy of 96.88% which highlights the promise of the proposed framework as an accurate low-overhead brain tumor detection system.
Motif-driven Dense Subgraph Discovery in Directed and Labeled Networks
Creators: name: Sariyuce, Ahmet Erdem
Publisher: name: arXiv
Year: 2021
Subjects: subject: Social and Information Networks (cs.SI)
subject: Combinatorics (math.CO)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: Dense regions in networks are an indicator of interesting and unusual information. However, most existing methods only consider simple, undirected, unweighted networks. Complex networks in the real-world often have rich information though: edges are asymmetrical and nodes/edges have categorical and numerical attributes. Finding dense subgraphs in such networks in accordance with this rich information is an important problem with many applications. Furthermore, most existing algorithms ignore the higher-order relationships (i.e., motifs) among the nodes. Motifs are shown to be helpful for dense subgraph discovery but their wide spectrum in heterogeneous networks makes it challenging to utilize them effectively. In this work, we propose quark decomposition framework to locate dense subgraphs that are rich with a given motif. We focus on networks with directed edges and categorical attributes on nodes/edges. For a given motif, our framework builds subgraphs, called quarks, in varying quality and with hierarchical relations. Our framework is versatile, efficient, and extendible. We discuss the limitations and practical instantiations of our framework as well as the role confusion problem that needs to be considered in directed networks. We give an extensive evaluation of our framework in directed, signed-directed, and node-labeled networks. We consider various motifs and evaluate the quark decomposition using several real-world networks. Results show that quark decomposition performs better than the state-of-the-art techniques. Our framework is also practical and scalable to networks with up to 101M edges.
description: 12 pages, 8 figures. To appear in The Web Conference (WWW) 2021
Population of neutron unbound states via two-proton knockout reactions
Creators: name: Frank, N.
name: Baumann, T.
name: Bazin, D.
name: Gade, A.
name: Lecouey, J. -L.
name: Peters, W. A.
name: Scheit, H.
name: Schiller, A.
name: Thoennessen, M.
name: Brown, J.
name: DeYoung, P. A.
name: Finck, J. E.
name: Hinnefeld, J.
name: Howes, R.
name: Luther, B.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The two-proton knockout reaction 9Be(26Ne,O2p) was used to explore excited unbound states of 23O and 24O. In 23O a state at an excitation energy of 2.79(13) MeV was observed. There was no conclusive evidence for the population of excited states in 24O.
description: 6 pages, 3 figures, Proc. 9th Int. Spring Seminar on Nucl. Phys. Changing Facets of Nuclear Structure, May 20-34, 2007
Multifunctional operation of the double-layer ferromagnetic structure coupled by a rectangular nanoresonator
Creators: name: Roberjot, Pierre
name: Szulc, Krzysztof
name: Kłos, Jarosław W.
name: Krawczyk, Maciej
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The use of spin waves as a signal carrier requires developing the functional elements allowing for multiplexing and demultiplexing information coded at different wavelengths. For this purpose, we propose a system of thin ferromagnetic layers dynamically coupled by a rectangular ferromagnetic resonator. We show that a single and double, clockwise and counter-clockwise, circulating modes of the resonator offer a wide possibility of control of propagating waves. Particularly, at frequency related to the double-clockwise circulating spin-wave mode of the resonator, the spin wave excited in one layer is transferred to the second one where it propagates in the backward direction. Interestingly, the wave excited in the second layer propagates in the forward direction only in that layer. This demonstrates add-drop filtering, as well as circulator functionality. Thus, the proposed system can become an important part of future magnonic technology for signal routing.
description: 6 pages, 4 figures
Euclidean Methods and the entropy function
Creators: name: Silva, Pedro J
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We review results of articles hep-th/0607056, hep-th/0610163 and 0704.1405 [hep-th]. Here we focus on establish the connection between the entropy functional formalism of Sen and the standard Euclidean formalism taken at zero temperature. We find that Sen's entropy function $f$ (on-shell) matches the zero temperature limit of the Euclidean action. Moreover, Sen's near horizon angular and electric fields agree with the chemical potentials that are defined from the zero-temperature limit of the Euclidean formalism. Connection with the Dual CFT thermodynamics is briefly discussed.
description: Talk given at RTN workshop: Constituents, Fundamental Forces and Symmetries of the Universe, Valencia (Spain), 1-5 October 2007. 7 pages, abstract modified for arXiv
How Universal is the Coupling in the Sigma Model?
Creators: name: Parganlija, Denis
name: Giacosa, Francesco
name: Rischke, Dirk H.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We calculate pion-pion scattering lengths and sigma, rho and a1 decay widths from a gauged linear sigma model with two flavours and its globally invariant generalisation.
description: Presented at the workshop SCADRON 70 "Scalar Mesons and Related Topics" February 11-16, 2008, at IST in Lisbon, Portugal. 5 pages, 1 figure