cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Reimagining Power, Sexuality, and Governance: Unearthing Colonial Biopolitics in South Asia and British Ceylon (1815-1948)
Creators: name: Rasaiya, Raahavy
Publisher: name: University of Kent
Year: 2025

description: This thesis explores the racial, gendered, and sexual infrastructures of British colonial administration concerning the reordering of women's sexuality in colonial Sri Lanka, historically known as Ceylon. Through a Foucauldian biopolitical framework, complemented by feminist and anti-colonial perspectives, the study examines how colonial rule sought to regulate and control female sexuality as a means of sustaining imperial dominance. The analysis is structured around three interrelated themes: prostitution under the British Contagious Diseases Acts (CDA), the colonial intervention in the devadasi system, and the regulation of motherhood. These themes illustrate how the British colonial government utilised legal, medical, and socio-cultural discourses to exert power over women's bodies and reproductive roles. The CDA, enacted to protect British military personnel from sexually transmitted diseases, effectively subjected women to invasive surveillance and control. Similarly, the colonial administration's focus on the devadasi system-stripping it of its cultural and artistic significance-underscores the intersection of imperial moralism and gendered governance. Finally, the regulation of motherhood through colonial reproductive policies reveals the imposition of metropolitan norms onto local gender and familial structures.
Situating Ceylon within the broader South Asian context, this study compares colonial governance strategies between India and Ceylon, highlighting both shared and distinct mechanisms of control. The methodological approach aligns with the 'imperial turn' in historiography, emphasising the interconnectedness of the metropole and the colony as co-constitutive spaces of knowledge production and power. While Foucault's concept of biopolitics provides a foundational lens, this research also acknowledges its Eurocentric limitations and engages with scholars such as Ann Laura Stoler and Gayatri Spivak to critique and extend biopolitical analysis in colonial contexts. This thesis ultimately argues that the colonial administration's governance of female sexuality was not only an exercise in discipline and control but also a fundamental component of the imperial project, shaping racial and gender hierarchies that continue to inform postcolonial power structures.
Search for CP Violation in the Dalitz-Plot Analysis of D+/- -> K+ K- pi+/-
Creators: name: CLEO Collaboration
name: Rubin, P.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We report on a search for CP asymmetry in the singly Cabibbo-suppressed decay D+ -> K+ K- pi+ using a data sample of 818 pb-1 accumulated with the CLEO-c detector on the psi(3770) resonance. A Dalitz-plot analysis is used to determine the amplitudes of the intermediate states. We find no evidence for CP violation either in specific two-body amplitudes or integrated over the entire phase space. The CP asymmetry in the latter case is measured to be (-0.03+-0.84+-0.29)%.
description: 13 pages, 4 figures, 5 tables
The evolution of Lithium: implications of a universal Spite plateau
Creators: name: Matteucci, Francesca
name: Molero, Marta
name: Aguado, David S.
name: Romano, Donatella
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The cosmological {7Li problem consists in explaining why the primordial Li abundance, as predicted by the standard Big Bang nucleosynthesis theory with constraints from WMAP and Planck, is a factor of 3 larger than the Li abundance measured in the stars of the Spite plateau defined by old, warm dwarf stars of the Milky Way halo. Several explanations have been proposed to explain this difference, including various Li depletion processes as well as non standard Big Bang nucleosynthesis, but the main question remains unanswered. In this paper, we present detailed chemical evolution models for dwarf spheroidal and ultra faint galaxies, compute the galactic evolution of 7Li abundance in these objects and compare it with observations of similar objects. In our models, Li is mainly produced by novae and cosmic rays and to a minor extent by low and intermediate mass stars. We adopt the yield combination which best fits the Li abundances in the Milky Way stars. It is evident that the observations of dwarf objects define a Spite plateau, identical to that observed in the Milky Way, thus suggesting that the Spite plateau could be a universal feature and its meaning should be discussed. The predictions of our models for dwarf galaxies, are obtained by assuming as Li primordial abundance either the one detected in the atmospheres of the oldest halo stars (Spite plateau; A(Li)=2.2 dex), or the one from cosmological observations (WMAP; A(Li)=2.66 dex). Finally, we discuss the implications of the universality of the Spite plateau results.
description: 7 pages, 4 figures
MHD Flow of Thixotropic Fluid with Variable Thermal Conductivity and Thermal Radiation
Creators: name: Tasawar HAYAT, Sabir Ali SHEHZAD
Publisher: name: Walailak University
Year: 2013
Subjects: MHD flow, thixotropic fluid, thermal radiation, variable thermal conductivity, stretching surface

description: 1, 10, Walailak Journal of Science and Technology
A Novel Metabolic Program Fuels Continued Anaerobic Glycolysis in the Hypoxia Tolerant Naked Mole-Rats
Creators: name: Amoroso, Ventu Giuseppe
Publisher: name: University of Illinois at Chicago
Year: 2024

description: Survival strategies against the pathologies of low oxygen conditions that challenge the fundamentals of biological physiology are explored. Here within is described a novel redox shuttle that is utilized in the hypoxia-tolerant naked mole-rat, which utilizes a uniquely upregulated pulmonary gluconeogenic pathway to produce, from the bottom up, carbonyls that can yield ATP and pyruvate, which is capable of transporting redox potential to energy-demanding hypoxic organs. A multiomics analysis is conducted on hypoxic tissues, and several quantifications of key enzyme activities are provided. Interventions that block the transport of this redox shuttle are provided, and read-outs in terms of behavioral activity and cardiac parameters are provided. In conclusion, the naked mole-rat is shown to be host to a highly unique and novel pathway that provides for continued anaerobic glycolytic activity under hypoxia with implications for oncology, stroke, and other pathologies that witness hypoxic conditions.
Models Of Bacteria Swimming In A Nematic Liquid Crystal
Creators: name: Duan, Mochong
Publisher: name: Carnegie Mellon University
Year: 2022
Subjects: subject: 10299 Applied Mathematics not elsewhere classified
subject: FOS: Mathematics

description: Models of dilute systems of bacteria swimming in a nematic liquid crystal are developed and analyzed. The motion and orientation of the bacteria are simulated using ordinary differential equations coupled with the partial differential equations modeling the nematic liquid crystal (Ericksen Leslie equations). The analysis and numerical simulations of this system are shown to predict interesting phenomena observed experimentally.
Stochastic differential equations with irregular coefficients:~mind the gap!
Creators: name: Szölgyenyi, Michaela
Publisher: name: arXiv
Year: 2021
Subjects: subject: Numerical Analysis (math.NA)
subject: Probability (math.PR)
subject: FOS: Mathematics

description: Numerical methods for stochastic differential equations with non-globally Lipschitz coefficients are currently studied intensively. This article gives an overview of our work for the case that the drift coefficient is potentially discontinuous complemented by other important results in this area. To make the topic accessible to a broad audience, we begin with a heuristic on SDEs and a motivation.
Many-electron dynamics of atomic processes studied by photon-induced fluorescence spectroscopy
Creators: name: Sukhorukov, V. L.
name: Petrov, I. D.
name: Lagutin, B. M.
name: Ehresmann, A.
name: Schartner, K. -H.
name: Schmoranzer, H.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences
subject: J.2

description: The progress and the chronology in understanding the influence of electron correlations on the electronic structure of atoms and the dynamics of atomic processes are reviewed focusing on benchmark rare-gas atoms. The contributions and the chronological development of Photon-Induced Fluorescence Spectroscopy (PIFS), measuring {} dispersed-fluorescence emission cross sections upon excitation by single photons provided by monochromatized synchrotron radiation is described. Selected experimental results obtained by complementary techniques are also discussed for comparison. The basic suites of computer programs used for the investigation of the many-electron effects in atoms and the obtained results are analyzed. Special attention is paid to the Configuration Interaction Pauli-Fock approximation with Core Polarization (CIPFCP) method used to interpret the PIFS data.
description: 88 pages, 54 figures, 344 bibliography items
O-bearing complex organic molecules at the cyanopolyyne peak of TMC-1: detection of C2H3CHO, C2H3OH, HCOOCH3, and CH3OCH3
Creators: name: Agundez, M.
name: Marcelino, N.
name: Tercero, B.
name: Cabezas, C.
name: de Vicente, P.
name: Cernicharo, J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We report the detection of the oxygen-bearing complex organic molecules propenal (C2H3CHO), vinyl alcohol (C2H3OH), methyl formate (HCOOCH3), and dimethyl ether (CH3OCH3) toward the cyanopolyyne peak of the starless core TMC-1. These molecules are detected through several emission lines in a deep Q-band line survey of TMC-1 carried out with the Yebes 40m telescope. These observations reveal that the cyanopolyyne peak of TMC-1, which is the prototype of cold dark cloud rich in carbon chains, contains also O-bearing complex organic molecules like HCOOCH3 and CH3OCH3, which have been previously seen in a handful of cold interstellar clouds. In addition, this is the first secure detection of C2H3OH in space and the first time that C2H3CHO and C2H3OH are detected in a cold environment, adding new pieces in the puzzle of complex organic molecules in cold sources. We derive column densities of (2.2 +/- 0.3)e11 cm-2, (2.5 +/- 0.5)e12 cm-2, (1.1 +/- 0.2)e12 cm-2, and (2.5 +/- 0.7)e12 cm-2 for C2H3CHO, C2H3OH, HCOOCH3, and CH3OCH3, respectively. Interestingly, C2H3OH has an abundance similar to that of its well known isomer acetaldehyde (CH3CHO), with C2H3OH/CH3CHO ~ 1 at the cyanopolyyne peak. We discuss potential formation routes to these molecules and recognize that further experimental, theoretical, and astronomical studies are needed to elucidate the true mechanism of formation of these O-bearing complex organic molecules in cold interstellar sources.
description: Accepted for publication in A&A Letters
Examining gender bias of GitHub Pull Request comments with machine learning
Creators: name: Garland, Stephan
Publisher: name: The University of Texas at Austin
Year: 2021
Subjects: Bias
Gender discrimination
Software
Pull requests

description: Bias is known to exist in many fields, software included. Specifically concerning gender bias, women are traditionally under-represented in technical fields, and previous research has shown a gatekeeping aspect to both the hiring practices and day-to-day work. One way of investigating the existence and/or severity of bias is via sentiment analysis, using machine learning. This method could be utilized similarly to spellcheck, prompting the comment's author to rethink their comment's tone. This paper examines that method, using approximately 154,000,000 unique comments from Pull Requests on GitHub sourced from the GHTorrent project, classified using the shallow neural network fastText, and GitHub avatars classified with Amazon Web Services Rekognition. My results failed to reject the null hypothesis that gender does not have a measurable effect on the sentiment of comments received. However, additional research could include a larger subset of comments and/or better tune fastText, as well as measuring other biases such as nationalism.
Asteroseismic Signatures of Small Convective Cores
Creators: name: Cunha, M. S.
name: Metcalfe, T. S.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present an analytical study of the effect of small convective cores on the oscillations of solar-like pulsators. Based on an asymptotic analysis of the wave equation near the center of the star, we derive an expression for the perturbations to the frequencies of radial modes generated by a convective core and discuss how these perturbations depend on the properties of the core. Moreover, we propose a diagnostic tool to isolate the predicted signature of the core, constructed from a particular combination of the oscillation frequencies, and we validate this tool with simulated data. We also show that the proposed tool can be applied to the pulsation data soon expected from satellite missions such as CoRoT and Kepler to constrain the amplitude of the discontinuity in the sound speed at the edge of the convective core, the ratio between the sound speed and the radius at this same location, and the stellar age.
description: 10 pages including 5 figures, ApJ accepted
Enhancing health monitoring precision: Mitigating false negatives with smart wearables and generative AI
Creators: name: Methun Kamruzzaman
name: Salinas, Jorge
name: Balakrishnan, Uma
name: Kunal Poorey
Publisher: name: F1000 Research Limited
Year: 2023

description: In our pursuit of refined health monitoring, our primary objective is to bolster accuracy by minimizing false negatives—instances where potential health concerns are overlooked. Leveraging advanced wearables such as Smartwatches and Fitbit, our focus extends to real-time health tracking, with a keen emphasis on vital signs, particularly resting heart rate, well-defined within the CDC ranges.

The crux of our work lies in recognizing the far-reaching impact of false negatives in health monitoring—instances where subtle warning signs may go undetected, potentially leading to severe consequences. To address this critical issue, we've developed a lightweight and streamlined algorithm tailored to categorize irregularities in vital signs. Resting heart rate, a pivotal metric outlined by the CDC, takes center stage in our efforts to minimize false negatives.

However, the acquisition of high-quality real-world data for comprehensive health studies poses inherent challenges, marked by resource limitations and biases. To surmount these hurdles, we turn to generative AI, specifically leveraging the Wasserstein Generative Adversarial Network (WGAN). This innovative approach allows us to generate synthetic data that mimics real-world wearable information, creating a diverse and expansive dataset for thorough analysis.

Our methodology revolves around both real and synthetic datasets, strategically navigating the uncertainty associated with anomaly detection thresholds. The amalgamation of cutting-edge wearables and generative AI positions our research at the forefront of reshaping health monitoring paradigms, offering a nuanced and accurate understanding of potential health concerns while significantly reducing false negatives.

As we delve into the intricacies of this research, our unwavering commitment is clear: to advance precision health monitoring by minimizing the occurrence of false negatives. Through this work, we aspire to empower individuals and healthcare systems with a more comprehensive and reliable health assessment tool for any upcoming pandemic.
Superconducting Acousto-optic Phase Modulator
Creators: name: Okada, Ayato
name: Yamazaki, Rekishu
name: Fuwa, Maria
name: Noguchi, Atsushi
name: Yamaguchi, Yuya
name: Kanno, Atsushi
name: Yamamoto, Naokatsu
name: Hishida, Yuji
name: Terai, Hirotaka
name: Tabuchi, Yutaka
name: Usami, Koji
name: Nakamura, Yasunobu
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We report the development of a superconducting acousto-optic phase modulator fabricated on a lithium niobate substrate. A titanium-diffused optical waveguide is placed in a surface acoustic wave resonator, where the electrodes for mirrors and an interdigitated transducer are made of a superconducting niobium titanium nitride thin film. The device performance is evaluated as a substitute for the current electro-optic modulators, with the same fiber coupling scheme and comparable device size. Operating the device at a cryogenic temperature (T=8K), we observe the length-half-wave-voltage (length-$V_π$) product of 1.78 V$\cdot$cm. Numerical simulation is conducted to reproduce and extrapolate the performance of the device. An optical cavity with mirror coating on the input/output facets of the optical waveguide is tested for further enhancement of the modulation efficiency. A simple extension of the current device is estimated to achieve an efficient modulation with $V_π=$ 0.27 V.
description: 9 pages, 4 figures
Multimode parity-time and loss-compensation symmetries in coupled waveguides with loss and gain
Creators: name: Hlushchenko, Anton V.
name: Shcherbinin, Vitalii I.
name: Novitsky, Denis V.
name: Tuz, Vladimir R.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Loss compensation via inserting gain is of fundamental importance in different branches of photonics, nanoplasmonics, and metamaterial science. This effect has found an impressive implementation in the parity-time symmetric (PT-symmetric) structures possessing balanced distribution of loss and gain. In this work, we generalize this phenomenon to the asymmetric systems demonstrating loss compensation in the coupled multi-mode loss-gain dielectric waveguides of different radii. We show that similar to the PT-symmetric coupled single-mode waveguides of identical radii, the asymmetric systems support the exceptional points called here the loss compensation (LC) thresholds where the frequency spectrum undergoes a transition from complex to real values. Moreover, the LC-symmetry thresholds can be obtained for dissimilar modes excited in the waveguides providing an additional degree of freedom to control the system response. In particular, changing loss and gain of asymmetric coupled waveguides, we observe loss compensation for TM and TE modes as well as for the hybrid HE and EH modes.
description: 11 pages, 13 figures
Orientation Dependence of the Anomalous Hall Resistivity in Single Crystals of Yb14MnSb11
Creators: name: Sales, Brian C.
name: Jin, Rongying
name: Mandrus, David
Publisher: name: arXiv
Year: 2007
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The Hall resistivity, electrical resistivity and magnetization of single crystals of the tetragonal ferromagnet Yb14MnSb11 are reported as a function of the direction of the current, I, and magnetic field, H with respect to the principal crystallographic axes. With I along the unique c direction and H in the a-b plane, the anomalous Hall resistivity in the limit of zero applied field is negative for all temperatures T less than Tc= 53 K. In this direction, the anomalous Hall effect behaves in a manner similar to that observed in other ferromagnets such as Fe, Co, Mn5Ge3, and EuFe4Sb12. However, with I in the a-b plane and H along the c direction, the anomalous Hall behavior is completely different. The anomalous Hall resistivity data are positive for all T less than Tc and a similar analysis of these data fails. In this direction, the anomalous response is not a simple linear function of the magnetization order parameter, and for a fixed temperature (T less than Tc) does not depend on the magnitude of the magnetization perpendicular to the current in the a-b plane. That is, when the magnetization and applied field are rotated away from the c direction, the anomalous Hall resistivity does not change. In all other soft ferromagnets that we have examined (including La doped crystals of Yb14MnSb11, i.e. Yb13.3La0.7MnSb11) rotation of the magnetization and magnetic field by an angle theta away from a direction perpendicular to I results in a decrease in both the anomalous and normal portions of the Hall resistivity that approximately scales as cos(theta). We suggest that the unique response exhibited by Yb14MnSb11 is a direct reflection of the delicate balance between ferromagnetism and Kondo screening.
description: 20 pages, 12 Figures, Submitted to Physical Review B, July 18, 2007
Suivi de la sécurité alimentaire en Afrique de l’Ouest :Quelles méthodes d’analyse de données pour traiterl’interdisciplinarité de la sécurité alimentaire
Creators: name: DELÉGLISE, Hugo
name: BÉGUÉ, Agnès
name: INTERDONATO, Roberto
name: MAITRE D'HOTEL, Élodie
name: TEISSEIRE, Maguelonne
Publisher: name: Journal of Interdisciplinary Methodologies and Issues in Science - JIMIS-CNRS-Episciences - ESPACE - Agorantic
Year: 2021
Subjects: Burkina faso
Fouille de donnees
Apprentissage
Motifs spatio-temporels
Sécurité alimentaire

description: La faim en Afrique augmente à nouveau après avoir reculé pendant plusieurs années. Elle représente un enjeu sociétal mondial auquel toutes les disciplines se préoccupant d’analyse de données sont confrontées. Dans le cadre d’une collaboration pluridisciplinaire entre informaticiens, économistes et télédétecteurs, nous nous intéressons dans cet article au cas du Burkina Faso qui est l’un des pays d’Afrique de l’Ouest les plus touchés par l’insécurité alimentaire. Nous détaillons les données disponibles qui permettront d’alimenter un système de surveillance et d’alerte précoce. Nous décrivons deux approches d’analyse de données hétérogènes (valeurs quantitatives, séries temporelles, images, etc.) qui sont les méthodes d’apprentissage et les méthodes d’extraction de motifs spatio-temporels. Puis, nous dressons les premiers bilans des expérimentations réalisées,les modèles utilisées ont permis d’obtenir une accuracy de 0.75 pour le score de consommation alimentaire et de 0.73 pour le score de diversité alimentaire. Nous listons enfin les travaux que nous poursuivons dans ce contexte.
Gamma-Ray Flash Generation in Irradiating Thin Foil Target by Single Cycle Tightly Focused Extreme Power Laser Pulse
Creators: name: Hadjisolomou, Prokopis
name: Jeong, Tae Moon
name: Valenta, Petr
name: Korn, Georg
name: Bulanov, Sergei
Publisher: name: arXiv
Year: 2021
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: We present a regime where an ultra-intense laser pulse interacting with a foil target results in high $γ$-photon conversion efficiency, obtained via three-dimensional quantum-electrodynamics particle-in-cell simulations. A single-cycle laser pulse is used under the tight-focusing condition for obtaining the $\mathrmλ^3$ regime. The simulations employ a radially polarized laser as it results in higher $γ$-photon conversion efficiency compared to both azimuthal and linear polarizations. A significant fraction of the laser energy is transferred to positrons, while a part of the electromagnetic wave escapes the target as attosecond single-cycle pulses.
description: 6 pages, 5 figures
Gender Blindness in Latin American Political Science
Creators: name: Freidenberg, Flavia
Publisher: name: figshare
Year: 2021
Subjects: subject: 160699 Political Science not elsewhere classified
subject: FOS: Political science

description: This article reflects about the weight women have had in the field of Political Science in and about Latin America during the last decade. This text not only describes and analyzes the existing gender gap in compared research about Latin America, but also it focuses the attention in how the discipline as a profession is exercised. The main objective of this paper is to generate initial reflections about of the status of women in the discipline in Latin America as well as how we do research, what we teach and what we publish (and with whom) in the discipline. The women are underrepresented in Political Science meetings, syllabi, and editorial boards. This is done under the premise that Political Science is a gendered discipline that reproduces exclusionary views, beliefs, and practices and also operates under a certain level of “gender blindness”.
How to Cite
FREIDENBERG, Flavia D.. Gender Blindness in Latin American Political Science. Ameryka Łacińska. Kwartalnik Analityczno-Informacyjny, [S.l.], v. 3, n. 101, p. 50-66, feb. 2019. ISSN 2081-1152.
https://doi.org/10.6084/m9.figshare.13961957.v1Available at: . Date accessed: 12 feb. 2021.
Exploring FSR open cluster candidates within $|Δ\ell|=20^\circ$ of the Galactic anticentre
Creators: name: Bonatto, Charles
name: Bica, Eduardo
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We investigate the nature of a sample of star cluster candidates detected as stellar overdensities towards the Galactic anticentre. Taken from the catalogue of Froebrich, Scholz, and Raftery (FSR), the sample contains 28 star cluster candidates located within $|Δ\ell|=20^\circ$ of the anticentre. These are all the candidates in that sector classified by FSR with a high probability of being star clusters. Our main goals are to determine the fraction of such candidates that are unknown star clusters, to derive their astrophysical parameters, and to investigate the relationship of cluster parameters with position in the Galaxy. When photometric and radial distribution properties are considered together, an important fraction of the stellar overdensities with a fluctuation level $\ga3σ$ are shown to be star clusters. Thus, catalogues of star cluster candidates, coupled to the present kind of study, are an important source for identifying unknown open clusters. Such efforts affect the understanding of the star-formation rate, cluster dynamical evolution, and Galactic structure, among others.
description: 14 pages, 13 figures. Accepted by A&A on 21/04/2008
Costume Design of Boom
Creators: name: Stack, Ivania Maria
Publisher: name: Digital Repository at the University of Maryland
Year: 2013
Subjects: subject: Theater
subject: Boom
subject: Costume
subject: Design
subject: Woolly Mammoth Theatre

description: The purpose of this thesis is to provide all of the paperwork, supporting research, renderings, and production photographs that document the costume design for Boom at the Woolly Mammoth Theatre Company in Washington DC.  This thesis contains the following: research images collected from a variety of sources to help develop the design for the show and communicate to the director, actors and other designers conceptual ideas for the production (e.g. color palette, clothing silhouette and style); initial rough sketches; final color renderings created during the design development and rehearsal processes; fabric dye samples and swatches for garments built for the production; hair style research that was used to help the actor's develop the play's characters; and periodical reviews of the show.  Finally, archival production photos are included to visually document the completed design.
Robots Learn Increasingly Complex Tasks with Intrinsic Motivation and Automatic Curriculum Learning
Creators: name: Nguyen, Sao Mai
name: Duminy, Nicolas
name: Manoury, Alexandre
name: Duhaut, Dominique
name: Buche, Cédric
Publisher: name: arXiv
Year: 2022
Subjects: subject: Robotics (cs.RO)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Multi-task learning by robots poses the challenge of the domain knowledge: complexity of tasks, complexity of the actions required, relationship between tasks for transfer learning. We demonstrate that this domain knowledge can be learned to address the challenges in life-long learning. Specifically, the hierarchy between tasks of various complexities is key to infer a curriculum from simple to composite tasks. We propose a framework for robots to learn sequences of actions of unbounded complexity in order to achieve multiple control tasks of various complexity. Our hierarchical reinforcement learning framework, named SGIM-SAHT, offers a new direction of research, and tries to unify partial implementations on robot arms and mobile robots. We outline our contributions to enable robots to map multiple control tasks to sequences of actions: representations of task dependencies, an intrinsically motivated exploration to learn task hierarchies, and active imitation learning. While learning the hierarchy of tasks, it infers its curriculum by deciding which tasks to explore first, how to transfer knowledge, and when, how and whom to imitate.
Static and dynamic properties of vortices in anisotropic magnetic disks
Creators: name: Machado, Tiago S.
name: Rappoport, Tatiana G.
name: Sampaio, Luiz C.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We investigate the effect of the magnetic anisotropy ($K_z$) on the static and dynamic properties of magnetic vortices in small disks. Our micromagnetic calculations reveal that for a range of $K_z$ there is an enlargement of the vortex core. We analyze the influence of $K_z$ on the dynamics of the vortex core magnetization reversal under the excitation of a pulsed field. The presence of $K_z$, which leads to better resolved vortex structures, allows us to discuss in more details the role played by the in-plane and perpendicular components of the gyrotropic field during the vortex-antivortex nucleation and annihilation.
description: 4 pages, 4 figures
On Glassey's conjecture for semilinear wave equations in Friedmann-Lemaître-Robertson-Walker spacetime
Creators: name: Tsutaya, Kimitoshi
name: Wakasugi, Yuta
Publisher: name: arXiv
Year: 2021
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35L05, 35L70, 35P25

description: Consider nonlinear wave equations in the spatially flat Friedmann-Lemaître-Robertson-Walker (FLRW) spacetimes. We show blow-up in finite time of solutions and upper bounds of the lifespan of blow-up solutions to give the FLRW spacetime version of Glassey's conjecture for the time derivative nonlinearity. We also show blow-up results for the space time derivative nonlinearity.
description: arXiv admin note: text overlap with arXiv:2103.01219, arXiv:2103.00175
Hydro-kinetic approach to relativistic heavy ion collisions
Creators: name: Akkelin, S. V.
name: Hama, Y.
name: Karpenko, Iu. A.
name: Sinyukov, Yu. M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We develop a combined hydro-kinetic approach which incorporates a hydrodynamical expansion of the systems formed in \textit{A}+\textit{A} collisions and their dynamical decoupling described by escape probabilities. The method corresponds to a generalized relaxation time ($τ_{\text{rel}}$) approximation for the Boltzmann equation applied to inhomogeneous expanding systems; at small $τ_{\text{rel}}$ it also allows one to catch the viscous effects in hadronic component - hadron-resonance gas. We demonstrate how the approximation of sudden freeze-out can be obtained within this dynamical picture of continuous emission and find that hypersurfaces, corresponding to a sharp freeze-out limit, are momentum dependent. The pion $m_{T}$ spectra are computed in the developed hydro-kinetic model, and compared with those obtained from ideal hydrodynamics with the Cooper-Frye isothermal prescription. Our results indicate that there does not exist a universal freeze-out temperature for pions with different momenta, and support an earlier decoupling of higher $p_{T}$ particles. By performing numerical simulations for various initial conditions and equations of state we identify several characteristic features of the bulk QCD matter evolution preferred in view of the current analysis of heavy ion collisions at RHIC energies.
description: 30 pages, 15 figures, minor corrections in accordance with the proof copy of the forthcoming article in PRC
Explicit Predictor-Corrector Method for Nonlinear Acoustic Waves Excited by a Moving Wave Emitting Boundary
Creators: name: Schenke, Sören
name: Sewerin, Fabian
name: van Wachem, Berend
name: Denner, Fabian
Publisher: name: arXiv
Year: 2022
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: We present an explicit finite difference time domain method to solve the lossless Westervelt equation for a moving wave emitting boundary in one dimension and in spherical symmetry. The approach is based on a coordinate transformation between a moving physical domain and a fixed computational domain. This allows to simulate the combined effects of wave profile distortion due to the constitutive nonlinearity of the medium and the nonlinear Doppler modulation of a pressure wave due to the acceleration of the wave emitting boundary. A predictor-corrector method is employed to enhance the numerical stability of the method in the presence of shocks and grid motion. It is demonstrated that the method can accurately predict the Doppler shift of nonlinear wave distortion and the amplitude modulation caused by an oscillating motion of the wave emitting boundary. The novelty of the presented methodology lies in its capability to reflect the Doppler shift of the rate of nonlinear wave profile distortion and shock attenuation for finite amplitude acoustic waves emitted from an accelerating boundary.
Characterization of NCCL and Unified Memory Under Normal and Oversubscribed Memory Conditions
Creators: name: Strina, Riccardo
Publisher: name: University of Illinois at Chicago
Year: 2024

description: The NVIDIA Collective Communications Library (NCCL) is a multi-GPU communication library widely used in applications such as deep learning, molecular dynamics, linear algebra, and graph processing. NCCL aims to replace CUDA-Aware MPI by enabling direct communica- tion between GPUs, thereby reducing latency compared to MPI’s GPU-to-CPU communication, which is a significant bottleneck in many applications. Unified Memory (UM), which allows a single memory address space shared by all CPUs and GPUs within a system, eliminates the need for explicit memory transfers between CPUs and GPUs. It also allows memory’s over- subscription, which allows to allocate more memory than is physically available on the GPU. This technology is invaluable in scenarios where program requirements exceed available GPU memory. This research aims to evaluate the performance and energy consumption of NCCL in conjunction with Unified Memory, both under normal conditions and when the oversubscrip- tion feature is utilized. The objective of this investigation is to gain a better understanding of the practical benefits and potential limitations of integrating these technologies in diverse applications.
title: ÐÐ¿ÑÐ¸Ð¼Ð¸Ð·Ð°ÑÐ¸Ñ ÑÐ¸Ð»Ð¾Ð²Ð¾Ð³Ð¾ ÐºÐ°ÑÐºÐ°ÑÐ° ÐºÐ°Ð±Ð¸Ð½Ñ Ð³ÑÑÐ·Ð¾Ð²Ð¾Ð³Ð¾ Ð°Ð²ÑÐ¾Ð¼Ð¾Ð±Ð¸Ð»Ñ
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð¼Ð°Ð³Ð¸ÑÑÑÐ°
titleType: Subtitle
title: The optimization of the load-bearing frame of the truck cab
Creators: name: ÐÑÐ°ÑÐ¾Ð²ÑÐºÐ°Ñ, ÐÐ°ÑÑÑ
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2023
Subjects: ÐÐ²ÑÐ¾Ð¼Ð¾Ð±Ð¸Ð»Ð¸ Ð³ÑÑÐ·Ð¾Ð²ÑÐµ
ÑÐ¾Ð¿Ð¾Ð»Ð¾Ð³Ð¸ÑÐµÑÐºÐ°Ñ Ð¾Ð¿ÑÐ¸Ð¼Ð¸Ð·Ð°ÑÐ¸Ñ
Ð¿Ð°ÑÐ°Ð¼ÐµÑÑÐ¸ÑÐµÑÐºÐ°Ñ Ð¾Ð¿ÑÐ¸Ð¼Ð¸Ð·Ð°ÑÐ¸Ñ
ÑÐ¸Ð»Ð¾Ð²Ð¾Ð¹ ÐºÐ°ÑÐºÐ°Ñ
ÐºÐ¾Ð½ÑÐµÐ¿ÑÑÐ°Ð»ÑÐ½Ð¾Ðµ Ð¿ÑÐ¾ÐµÐºÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ
topology optimization
parametric optimization
cab frame
conceptual design

description: Ð¢ÐµÐ¼Ð° ÑÐ°Ð±Ð¾ÑÑ â Ð¾Ð¿ÑÐ¸Ð¼Ð¸Ð·Ð°ÑÐ¸Ñ ÑÐ¸Ð»Ð¾Ð²Ð¾Ð³Ð¾ ÐºÐ°ÑÐºÐ°ÑÐ° ÐºÐ°Ð±Ð¸Ð½Ñ Ð³ÑÑÐ·Ð¾Ð²Ð¾Ð³Ð¾ Ð°Ð²ÑÐ¾Ð¼Ð¾Ð±Ð¸Ð»Ñ. Ð§Ð¸ÑÐ»ÐµÐ½Ð½ÑÐµ ÑÐ°ÑÑÐµÑÑ Ð¿ÑÐ¾Ð¸Ð·Ð²Ð¾Ð´ÑÑÑÑ Ð¿ÑÐ¸ Ð¿Ð¾Ð¼Ð¾ÑÐ¸ Ð¼ÐµÑÐ¾Ð´Ð° ÐºÐ¾Ð½ÐµÑÐ½ÑÑ ÑÐ»ÐµÐ¼ÐµÐ½ÑÐ¾Ð² Ð² Ð¿ÑÐ¾Ð³ÑÐ°Ð¼Ð¼Ðµ LS-DynÐ°. Ð¢Ð¾Ð¿Ð¾Ð»Ð¾Ð³Ð¸ÑÐµÑÐºÐ°Ñ Ð¾Ð¿ÑÐ¸Ð¼Ð¸Ð·Ð°ÑÐ¸Ñ Ð²ÑÐ¿Ð¾Ð»Ð½ÑÐµÑÑÑ Ð² Ð¿ÑÐ¾Ð³ÑÐ°Ð¼Ð¼Ðµ LS-TaSC, Ð¿Ð°ÑÐ°Ð¼ÐµÑÑÐ¸ÑÐµÑÐºÐ°Ñ - Ð² LS-Opt. Ð ÑÐ°Ð±Ð¾ÑÐµ Ð½Ð° Ð¿ÑÐ¸Ð¼ÐµÑÐµ ÑÐ°ÑÑÐ¼Ð¾ÑÑÐµÐ½ Ð¿ÑÐ¾ÑÐµÑÑ ÐºÐ¾Ð½ÑÐµÐ¿ÑÑÐ°Ð»ÑÐ½Ð¾Ð³Ð¾ Ð¿ÑÐ¾ÐµÐºÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ ÑÐ¸Ð»Ð¾Ð²Ð¾Ð³Ð¾ ÐºÐ°ÑÐºÐ°ÑÐ° ÐºÐ°Ð±Ð¸Ð½Ñ Ð³ÑÑÐ·Ð¾Ð²Ð¾Ð³Ð¾ Ð°Ð²ÑÐ¾Ð¼Ð¾Ð±Ð¸Ð»Ñ. ÐÐ¾Ð´ÑÐ¾Ð´ Ð·Ð°ÐºÐ»ÑÑÐ°ÐµÑÑÑ Ð² Ð¿Ð¾ÑÐ»ÐµÐ´Ð¾Ð²Ð°ÑÐµÐ»ÑÐ½Ð¾Ð¼ Ð¿ÑÐ¾Ð²ÐµÐ´ÐµÐ½Ð¸Ð¸ ÑÐ¾Ð¿Ð¾Ð»Ð¾Ð³Ð¸ÑÐµÑÐºÐ¾Ð¹ Ð¸ Ð¿Ð°ÑÐ°Ð¼ÐµÑÑÐ¸ÑÐµÑÐºÐ¾Ð¹ Ð¾Ð¿ÑÐ¸Ð¼Ð¸Ð·Ð°ÑÐ¸Ð¸ Ñ ÑÐµÐ»ÑÑ Ð¾Ð¿ÑÐµÐ´ÐµÐ»ÐµÐ½Ð¸Ñ Ð¾Ð¿ÑÐ¸Ð¼Ð°Ð»ÑÐ½Ð¾Ð¹ ÐºÐ¾Ð½ÑÑÑÑÐºÑÐ¸Ð¸ Ð¿ÑÐ¾ÐµÐºÑÐ¸ÑÑÐµÐ¼Ð¾Ð³Ð¾ Ð¸Ð·Ð´ÐµÐ»Ð¸Ñ. Ð ÑÐ¾Ð´Ðµ ÑÐ°Ð±Ð¾ÑÑ Ð¿Ð¾Ð»ÑÑÐµÐ½Ð° ÑÐ¾Ð¿Ð¾Ð»Ð¾Ð³Ð¸Ñ ÐºÐ¾Ð½ÑÑÑÑÐºÑÐ¸Ð¸ Ð½Ð° Ð¾ÑÐ½Ð¾Ð²Ðµ Ð¸ÑÐ¿ÑÑÐ°Ð½Ð¸Ð¹ Ð½Ð° ÐºÑÑÑÐ¸Ð»ÑÐ½ÑÑ Ð¸ Ð¸Ð·Ð³Ð¸Ð±Ð½ÑÑ Ð¶ÐµÑÑÐºÐ¾ÑÑÐ¸, Ð° ÑÐ°ÐºÐ¶Ðµ Ñ ÑÑÐµÑÐ¾Ð¼ Ð½Ð°Ð³ÑÑÐ·ÐºÐ¸ Ð½Ð° ÐºÑÑÑÑ ÐºÐ°Ð±Ð¸Ð½Ñ Ð¸ ÑÐµÑÑÐ° Ð½Ð° Ð»Ð¾Ð±Ð¾Ð²Ð¾Ð¹ ÑÐ´Ð°Ñ. ÐÐ°ÑÐµÐ¼, Ð¿Ð¾Ð»ÑÑÐµÐ½Ð½Ð°Ñ ÑÐ¾Ð¿Ð¾Ð»Ð¾Ð³Ð¸Ñ Ð¾Ð¿ÑÐ¸Ð¼Ð¸Ð·Ð¸ÑÐ¾Ð²Ð°Ð½Ð° Ð¿Ð°ÑÐ°Ð¼ÐµÑÑÐ¸ÑÐµÑÐºÐ¸ Ñ ÑÐµÐ»ÑÑ Ð¿Ð¾Ð²ÑÑÐµÐ½Ð¸Ñ Ð¶ÐµÑÑÐºÐ¾ÑÑÐ¸ ÐºÐ¾Ð½ÑÑÑÑÐºÑÐ¸Ð¸.
description: The topic of the graduate qualification work is the optimization of the load-bearing frame of the truck cab. Numerical calculations are performed using the finite element method in the LS-Dyna program. Topology optimization is performed in the LS-TaSC, parametric optimization is performed in the LS-Opt. The work considers the process of conceptual design of the truck cab. The approach consists in successive topological and parametric optimization in order to determine the optimal design of the designed product. The topology of the structure was obtained based on tests for torsional and bending stiffness, as well as roof crash test and frontal impact test. At the end of work parametric optimization of the resulting model was performed in order to increase the stiffness of the structure.
The Application of Microwave combined with Solar Drying to produce Dried Shitake Mushroom
Creators: name: Sumruay Pubali
Publisher: name: Thai Socities of Agricultural Engineering Journal
Year: 2021
Subjects: : Dried mushroom, Solar drying, Microwave puffing, Rehydration ratio, Color

description: Thai Socities of Agricultural Engineering Journal, 27, 1, 42-51
Searching for galactic cosmic ray pevatrons with multi-TeV gamma rays and neutrinos
Creators: name: Gabici, Stefano
name: Aharonian, Felix A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The recent HESS detections of supernova remnant shells in TeV gamma-rays confirm the theoretical predictions that supernova remnants can operate as powerful cosmic ray accelerators. If these objects are responsible for the bulk of galactic cosmic rays, then they should accelerate protons and nuclei to 10^15 eV and beyond, i.e. act as cosmic PeVatrons. The model of diffusive shock acceleration allows, under certain conditions, acceleration of particles to such high energies and their gradual injection into the interstellar medium, mainly during the Sedov phase of the remnant evolution. The most energetic particles are released first, while particles of lower energies are more effectively confined in the shell, and are released at later epochs. Thus the spectrum of nonthermal paticles inside the shell extends to PeV energies only during a relatively short period of the evolution of the remnant. For this reason one may expect spectra of secondary gamma-rays and neutrinos extending to energies beyond 10 TeV only from T \lesssim 1000 yr old supernova remnants. On the other hand, if by a chance a massive gas cloud appears in the \lesssim 100 pc vicinity of the supernova remnant, ``delayed'' multi-TeV signals of gamma-rays and neutrinos arise when the most energetic partices emerged from the supernova shell reach the cloud. The detection of such delayed emission of multi-TeV gamma-rays and neutrinos allows indirect identification of the supernova remnant as a particle PeVatron.
description: ApJ Letters, in press. Reference to recent MILAGRO results added
Investigating microwave loss of SiGe using superconducting transmon qubits
Creators: name: Sandberg, Martin
name: Adiga, Vivekananda P.
name: Brink, Markus
name: Kurter, Cihan
name: Murray, Conal
name: Hopstaken, Marinus
name: Bruley, John
name: Orcutt, Jason
name: Paik, Hanhee
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Silicon-Germanium (SiGe) is a material that possesses a multitude of applications ranging from transistors to eletro-optical modulators and quantum dots. The diverse properties of SiGe also make it attractive to implementations involving superconducting quantum computing. Here we demonstrate the fabrication of transmon quantum bits on SiGe layers and investigate the microwave loss properties of SiGe at cryogenic temperatures and single photon microwave powers. We find relaxation times of up to 100 $μ$s, corresponding to a quality factor Q above 4 M for large pad transmons. The high Q values obtained indicate that the SiGe/Si heterostructure is compatible with state of the art performance of superconducting quantum circuits.
description: 5 pages, 3 figures
Modeling Non-Circular Motions in Disk Galaxies: A Bar in NGC 2976
Creators: name: Spekkens, K.
name: Sellwood, J. A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We give a brief description of a new model for non-circular motions in disk galaxy velocity fields, that does not invoke epicycles. We assume non-circular motions to stem from a bar-like or oval distortion to the potential, as could arise from a triaxial halo or a bar in the mass distribution of the baryons. We apply our model to the high-quality CO and Halpha kinematics of NGC 2976 presented by Simon et al. 2003; it fits the data as well as their model with unrealistic radial flows, but yields a steeper rotation curve. Our analysis and other evidence suggests that NGC 2976 hosts a bar, implying a large baryonic contribution to the potential and thus limiting the allowed dark matter halo density.
description: 4 pages, 3 color figures, contribution to "Galaxies in the Local Volume" conference proceedings, eds. B. Koribalski and H. Jerjen
Spontaneous symmetry breaking in a driven-dissipative system
Creators: name: Smits, J.
name: Stoof, H. T. C.
name: van der Straten, P.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: Spontaneous symmetry breaking (SSB) is a key concept in physics that for decades has played a crucial role in the description of many physical phenomena in a large number of different areas, like particle physics, cosmology, and condensed-matter physics. SSB is thus an ubiquitous concept connecting several, both "high" and "low" energy, areas of physics and many textbooks describe its basic features in great detail. However, to study the dynamics of symmetry breaking in the laboratory is extremely difficult. In condensed-matter physics, for example, tiny external disturbances cause a preference for the breaking of the symmetry in a particular configuration and typically those disturbances cannot be avoided in experiments. Notwithstanding these complications, here we describe an experiment, in which we directly observe the spontaneous breaking of the temporal phase of a driven system with respect to the drive into two distinct values differing by $π$.
description: 8 pages, 9 figures, methods included
Building Roof Segmentation with Histogram Matching
Creators: name: Purwono, Nugroho
name: Purwono, Nugroho
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 370401
subject: Computational modelling and simulation in earth sciences
classificationCode: 370403
subject: Geoscience data visualisation
classificationCode: 370499
subject: Geoinformatics not elsewhere classified

description: This project is dedicated to enhancing building roof segmentation in detail-scale urban mapping. It employs deep learning techniques to achieve this goal and encompasses a comprehensive process for both training and prediction. The primary objective is to refine the accuracy of building roof segmentation in UAV (Unmanned Aerial Vehicle) imagery. The project involves a two-phase approach, consisting of training and prediction, aimed at improving the accuracy of building roof segmentation in UAV imagery through the application of histogram matching. To facilitate this, a ResNet U-Net model is leveraged for image segmentation, and histogram matching is employed to align UAV images with airborne images. This technique plays a crucial role in aligning the brightness distribution of images, ultimately contributing to improved segmentation results.Key Features:Deep Learning Approach: The project leverages a ResNet U-Net model for image segmentation. This deep learning architecture is well-suited for complex image segmentation tasks and has proven effective in a wide range of applications.Histogram Matching: A key innovation in this project is the integration of histogram matching. This technique helps align the brightness distribution of images, contributing to improved segmentation results.Google Colaboratory Compatibility: The codebase is designed to run on Google Colaboratory, a popular platform for cloud-based machine learning development. This ensures easy access and scalability for both training and prediction tasks.Data Sensitivity: It's essential to note that the data of this project is not open to the public due to the sensitive nature of the data used. The authorship of the data is a key consideration, and as such, access to the data is limited.
Compound Multiple Access Channels with Partial Cooperation
Creators: name: Simeone, O.
name: Gunduz, D.
name: Poor, H. V.
name: Goldsmith, A.
name: Shamai, S.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: A two-user discrete memoryless compound multiple access channel with a common message and conferencing decoders is considered. The capacity region is characterized in the special cases of physically degraded channels and unidirectional cooperation, and achievable rate regions are provided for the general case. The results are then extended to the corresponding Gaussian model. In the Gaussian setup, the provided achievable rates are shown to lie within some constant number of bits from the boundary of the capacity region in several special cases. An alternative model, in which the encoders are connected by conferencing links rather than having a common message, is studied as well, and the capacity region for this model is also determined for the cases of physically degraded channels and unidirectional cooperation. Numerical results are also provided to obtain insights about the potential gains of conferencing at the decoders and encoders.
description: Submitted to IEEE Transactions on Information Theory