cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Chaos and plasticity in superconductor vortices: a low-dimensional dynamics
Creators: name: Olive, E.
name: Soret, J. C.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We present new results of numerical simulations for driven vortex lattices in presence of random disorder at zero temperature. We show that the plastic dynamics of vortices display dissipative chaos. Intermittency "routes to chaos" have been clearly identified below the differential resistance peak. The peak region is characterized by positive Lyapunov exponents characteristic of chaos, and low frequency broad-band noise. Furthermore we find a low fractal dimension of the strange attractor, which suggests that only a few dynamical variables are sufficient to model the complex plastic dynamics of vortices.
description: 8 pages, 6 figures, accepted for publication in The Physical Review B
Data for Umol
Creators: name: Bryant, Patrick
Publisher: name: Zenodo
Year: 2024

description: posebusters_benchmark_set.tar.zst - files for the prediction (features to Umol/Umol-pocket) and scoring of the pose busters benchmark for Umol/Umol-pocket 

posebusters_pred_native.tar.zst - pdb and sdf files of proteins and ligands. Includes native structures, predicted structures and relaxed predicted structures with plDDT in the B factor column. Refers to Umol-pocket.

posebusters_pred_structures_no_pocket.tar.zst - pdb and sdf files of proteins and ligands. Includes predicted structures. Refers to Umol without pocket information.

posebusters_scores.csv - contains ligand RMSD and other metrics for the unrelaxed structures predicted with Umol-pocket (40000 steps).

posebusters_no_pocket_unrelaxed.csv - contains ligand RMSD and other metrics for the unrelaxed structures predicted with Umol (60000 steps).

binding_db_results.csv - results for binding db predicted with Umol.

binding_db_above_85.tar.zst - structures and results from binding db with ligand plDDT>85

params40000.npy - the parameters used in Umol-pocket (best check point)

valid_meta.csv - ids and meta for validation set complexes

valid_scores.tar.zst - scores (ligand RMSD) on the validation set for both Umol and Umol-pocket

calibration_meta.csv - structural clusters for affinity set

calibration_set_affinities.csv - affinity values (only Kd <1000 nM was used in the paper)

train_losses.csv - losses for training Umol-pocket

train_meta.csv - ids and meta for train set complexes

params60000.npy - the parameters used in Umol (best check point)
Velocity distribution of driven granular gases
Creators: name: Prasad, V. V.
name: Das, Dibyendu
name: Sabhapandit, Sanjib
name: Rajesh, R.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The granular gas is a paradigm for understanding the effects of inelastic interactions in granular materials. Kinetic theory provides a general theoretical framework for describing the granular gas. Its central result is that the tail of the velocity distribution of a driven granular gas is a stretched exponential that, counterintuitively, decays slower than that of the corresponding elastic gas in equilibrium. However, a derivation of this result starting from a microscopic model is lacking. Here, we obtain analytical results for a microscopic model for a granular gas where particles with two-dimensional velocities are driven homogeneously and isotropically by reducing the velocities by a factor and adding a stochastic noise. We find two universal regimes. For generic physically relevant driving, we find that the tail of the velocity distribution is a Gaussian with additional logarithmic corrections. Thus, the velocity distribution decays faster than the corresponding equilibrium gas. The second universal regime is less generic and corresponds to the scenario described by kinetic theory. Here, the velocity distribution is shown to decay as an exponential with additional logarithmic corrections, in contradiction to the predictions of the phenomenological kinetic theory, necessitating a re-examination of its basic assumptions.
description: 25 pages, 8 figures
title: ADCO, Cartulaire du prieuré Notre-Dame de Bonvaux, dépendant du Val-des-Ecoliers (XVe siècle), Dijon, Cart. 228 (27 H), 68 folios, 109 actes (1211-1356), f. 0039
Creators: name: de la Côte d'Or, Archives départementales
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
name: CG21/F.PETOT/2011
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge
subject: cartulaire
subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris

description: Cartulaire du prieuré Notre-Dame de Bonvaux, dépendant du Val-des-Ecoliers (XVe siècle), Dijon, Archives départementales de la Côte-d'Or, Cart. 228 (27 H), 68 folios, 109 actes (1211-1356). Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Cartulaire du prieuré Notre-Dame de Bonvaux, dépendant du Val-des-Ecoliers (XVe siècle), Dijon, Archives départementales de la Côte-d'Or, Cart. 228 (27 H), 68 folios, 109 actes (1211-1356), f. 0039, in Projet CBMA - Corpus Burgundiae Medii Aevi \[Ressource en ligne\], https:// manuscrits.cbma-project.eu/
description: Provenance: https://catalogue.bnf.fr/ark:/12148/cb15250518p
description: Provenance: http://www.idref.fr/02643413X/id
description: Provenance: https://www.geonames.org/6453767
description: Provenance: Dijon
description: Provenance: http://www.wikidata.org/entity/Q7003
Data for Umol
Creators: name: Bryant, Patrick
Publisher: name: Zenodo
Year: 2024

description: posebusters_benchmark_set.tar.zst - files for the prediction (features to Umol/Umol-pocket) and scoring of the pose busters benchmark for Umol/Umol-pocket 

posebusters_pred_native.tar.zst - pdb and sdf files of proteins and ligands. Includes native structures, predicted structures and relaxed predicted structures with plDDT in the B factor column. Refers to Umol-pocket.

posebusters_pred_structures_no_pocket.tar.zst - pdb and sdf files of proteins and ligands. Includes predicted structures. Refers to Umol without pocket information.

posebusters_scores.csv - contains ligand RMSD and other metrics for the unrelaxed structures predicted with Umol-pocket (40000 steps).

posebusters_no_pocket_unrelaxed.csv - contains ligand RMSD and other metrics for the unrelaxed structures predicted with Umol (60000 steps).

binding_db_results.csv - results for binding db predicted with Umol.

binding_db_above_85.tar.zst - structures and results from binding db with ligand plDDT>85

params40000.npy - the parameters used in Umol-pocket (best check point)

valid_meta.csv - ids and meta for validation set complexes

valid_scores.tar.zst - scores (ligand RMSD) on the validation set for both Umol and Umol-pocket

calibration_meta.csv - structural clusters for affinity set

calibration_set_affinities.csv - affinity values (only Kd <1000 nM was used in the paper)

train_losses.csv - losses for training Umol-pocket

train_meta.csv - ids and meta for train set complexes

params60000.npy - the parameters used in Umol (best check point)

cross_dataset_tanimoto_similarity.csv - Tanimoto similarity of training set to PoseBuster's test set
Spin flip scattering engendered quantum spin torque in a Josephson junction
Creators: name: Pal, Subhajit
name: Benjamin, Colin
Publisher: name: arXiv
Year: 2018
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We examine a Josephson junction with two Ferromagnets and a spin flipper sandwiched between two superconductors. In such Ferromagnetic Josephson junctions, equilibrium spin torque exists only when Ferromagnets are misaligned. This is explained via the "conventional" mechanism of spin transfer torque, which owes its origin to the misalignment of two Ferromagnets. However, we see surprisingly when the magnetic moments of the Ferromagnets are aligned parallel or antiparallel, there is a finite equilibrium spin torque due to the quantum mechanism of spin-flip scattering. We explore the properties of this unique spin-flip scattering induced equilibrium quantum spin torque, especially its tunability via exchange coupling and phase difference across the superconductors.
description: 16 pages, 7 figures, accepted for publication in Proceedings of the Royal Society A (2019)
Data for Umol
Creators: name: Bryant, Patrick
Publisher: name: Zenodo
Year: 2024

description: posebusters_benchmark_set.tar.zst - files for the prediction (features to Umol/Umol-pocket) and scoring of the pose busters benchmark for Umol/Umol-pocket 

posebusters_pred_native.tar.zst - pdb and sdf files of proteins and ligands. Includes native structures, predicted structures and relaxed predicted structures with plDDT in the B factor column. Refers to Umol-pocket.

posebusters_pred_structures_no_pocket.tar.zst - pdb and sdf files of proteins and ligands. Includes predicted structures. Refers to Umol without pocket information.

posebusters_scores.csv - contains ligand RMSD and other metrics for the unrelaxed structures predicted with Umol-pocket (40000 steps).

posebusters_no_pocket_unrelaxed.csv - contains ligand RMSD and other metrics for the unrelaxed structures predicted with Umol (60000 steps).

binding_db_results.csv - results for binding db predicted with Umol.

binding_db_above_85.tar.zst - structures and results from binding db with ligand plDDT>85

params40000.npy - the parameters used in Umol-pocket (best check point)

valid_meta.csv - ids and meta for validation set complexes

valid_scores.tar.zst - scores (ligand RMSD) on the validation set for both Umol and Umol-pocket

calibration_meta.csv - structural clusters for affinity set

calibration_set_affinities.csv - affinity values (only Kd <1000 nM was used in the paper)

train_losses.csv - losses for training Umol-pocket

train_meta.csv - ids and meta for train set complexes

params60000.npy - the parameters used in Umol (best check point)

cross_dataset_tanimoto_similarity.csv - Tanimoto similarity of training set to PoseBusters test set

af_pred.tar.zst - AlphaFold2 predictions for the PoseBusters test set used with DiffDock.

diffdock_af_pred.tar.zst  - pdb and sdf files of proteins and ligands for DiffDock+AF on the PoseBusters test set. Also includes a csv with l-RMSD scores.

neuralplexer.tar.zst  - pdb and sdf files of proteins and ligands for NeuralPlexer on the PoseBusters test set. Also includes a csv with l-RMSD scores.

rfaa.tar.zst - pdb  files of proteins and ligands for RFAA w/o template information on the PoseBusters test set. Also includes a csv with l-RMSD scores

hhblits.tar.zst - PoseBusters hhblits MSAs used to predict the AF, Umol and RFAA protein structures.
Charged Higgs bosons in the Next-to MSSM (NMSSM)
Creators: name: Akeroyd, A. G.
name: Arhrib, Abdesslam
name: Yan, Qi-Shu
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The charged Higgs boson decays $H^\pm\to W^\pm A_1$ and $H^\pm\to W^\pm h_i$ are studied in the framework of the next-to Minimal Supersymmetric Standard Model (NMSSM). It is found that the decay rate for $H^\pm\to W^\pm A_1$ can exceed the rates for the $τ^\pmν$ and $tb$ channels both below and above the top-bottom threshold. The dominance of $H^\pm\to W^\pm A_1$ is most readily achieved when $A_1$ has a large doublet component and small mass. We also study the production process $pp\to H^\pm A_1$ at the LHC followed by the decay $H^\pm\to W^\pm A_1$ which leads to the signature $W^\pm A_1 A_1$. We suggest that $p p\to H^\pm A_1$ is a promising discovery channel for a light charged Higgs boson in the NMSSM with small or moderate $\tanβ$ and dominant decay mode $H^\pm \to W^\pm A_1$. This $W^\pm A_1 A_1$ signature can also arise from the Higgsstrahlung process $pp\to W^\pm h_1$ followed by the decay $h_1\to A_1 A_1$. It is shown that there exist regions of parameter space where these processes can have comparable cross sections and we suggest that their respective signals can be distinguished at the LHC by using appropriate reconstruction methods.
description: 20 pages, 22 eps figures, more reference added
Transport of strong-coupling polarons in optical lattices
Creators: name: Bruderer, M.
name: Klein, A.
name: Clark, S. R.
name: Jaksch, D.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the transport of ultracold impurity atoms immersed in a Bose-Einstein condensate (BEC) and trapped in a tight optical lattice. Within the strong-coupling regime, we derive an extended Hubbard model describing the dynamics of the impurities in terms of polarons, i.e. impurities dressed by a coherent state of Bogoliubov phonons. Using a generalized master equation based on this microscopic model we show that inelastic and dissipative phonon scattering results in (i) a crossover from coherent to incoherent transport of impurities with increasing BEC temperature and (ii) the emergence of a net atomic current across a tilted optical lattice. The dependence of the atomic current on the lattice tilt changes from ohmic conductance to negative differential conductance within an experimentally accessible parameter regime. This transition is accurately described by an Esaki-Tsu-type relation with the effective relaxation time of the impurities as a temperature-dependent parameter.
description: 25 pages, 6 figures
Data for Umol
Creators: name: Bryant, Patrick
Publisher: name: Zenodo
Year: 2023

description: posebusters_benchmark_set.tar.zst - files for the prediction (features to Umol) and scoring of the pose busters benchmark 
posebusters_pred_native.tar.zst - pdb and sdf files of proteins and ligands. Includes native structures, predicted structures and relaxed predicted structures with plDDT in the B factor column.
posebusters_scores.csv - contains ligand RMSD and other metrics for the unrelaxed structures predicted with Umol.
PDBBind_processed.tar.zst  - files for the training (features to Umol) using PDBbind version 2020
params40000.npy - the parameters used in Umol (best check point)
valid_meta.csv - ids and meta for validation set complexes
calibration_meta.csv - structural clusters for affinity set
calibration_set_affinities.csv - affinity values (only Kd <1000 nM was used in the paper)
train_losses.csv - losses for training Umol
train_meta.csv - ids and meta for train set complexes
Information-Theoretic Approach to Efficient Adaptive Path Planning for Mobile Robotic Environmental Sensing
Creators: name: Low, Kian Hsiang
name: Dolan, John
name: Khosla, Pradeep
Publisher: name: Carnegie Mellon University
Year: 2009
Subjects: subject: 80399 Computer Software not elsewhere classified
subject: FOS: Computer and information sciences

description: Recent research in robot exploration and mapping has focused on sampling environmental hotspot fields. This exploration task is formalized by Low, Dolan, and Khosla (2008) in a sequential decision-theoretic planning under uncertainty framework called MASP. The time complexity of solving MASP approximately depends on the map resolution, which limits its use in large-scale, high-resolution exploration and mapping. To alleviate this computational difficulty, this paper presents an information-theoretic approach to MASP (iMASP) for efficient adaptive path planning; by reformulating the cost-minimizing iMASP as a reward-maximizing problem, its time complexity becomes independent of map resolution and is less sensitive to increasing robot team size as demonstrated both theoretically and empirically. Using the reward-maximizing dual, we derive a novel adaptive variant of maximum entropy sampling, thus improving the induced exploration policy performance. It also allows us to establish theoretical bounds quantifying the performance advantage of optimal adaptive over non-adaptive policies and the performance quality of approximately optimal vs. optimal adaptive policies. We show analytically and empirically the superior performance of iMASP-based policies for sampling the log-Gaussian process to that of policies for the widely-used Gaussian process in mapping the hotspot field. Lastly, we provide sufficient conditions that, when met, guarantee adaptivity has no benefit under an assumed environment model.
Global Existence for the Derivative Nonlinear Schrödinger Equation with Arbitrary Spectral Singularities
Creators: name: Jenkins, Robert
name: Liu, Jiaqi
name: Perry, Peter
name: Sulem, Catherine
Publisher: name: arXiv
Year: 2018
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35Q55, 37K15, 37K40, 35P25, 35Q15

description: We show that the derivative nonlinear Schrödinger (DNLS) equation is globally well-posed in the weighted Sobolev space $H^{2,2}(\mathbb{R})$. Our result exploits the complete integrability of DNLS and removes certain spectral conditions on the initial data, thanks to Xin Zhou's analysis on spectral singularities in the context of inverse scattering.
description: 40 pages, 10 figures, revised per referee comments
Python-Based Easy-to-Use Statistical Analysis Tool: Chi-Square, GLM, and Multinomial Regression
Creators: name: uzma, uzma
Publisher: name: figshare
Year: 2025
Subjects: classificationCode: 401405
subject: Machine tools
classificationCode: 460502
subject: Data mining and knowledge discovery
classificationCode: 460501
subject: Data engineering and data science
classificationCode: 490509
subject: Statistical theory
classificationCode: 490501
subject: Applied statistics
classificationCode: 460299
subject: Artificial intelligence not elsewhere classified
classificationCode: 350201
subject: Environment and climate finance
classificationCode: 320204
subject: Clinimetrics

description: This paper presents a novel statistical analysis tool that integrates Chi-Square Analysis, Generalized Linear Models (GLM), and Multinomial Logistic Regression. Developed using Python and the Streamlet framework, the tool is designed with a focus on accessibility, scalability, and ease of use. It is publicly available on GitHub (link to be provided upon release), but a private link for review purposes is available here: [Private GitHub Link/URL] to promote community access and collaboration. The tool's capabilities are demonstrated through its application on real-world datasets, including the Titanic and Cleveland Heart Disease datasets. These applications highlight the tool’s ability to analyse complex relationships within both categorical and numerical data, providing valuable insights for statistical analysis in diverse domains. The integration of Python and Streamlet ensures that the tool is user-friendly and efficient, making it suitable for both beginner and advanced users. The findings underscore the potential of this tool to enhance data analysis workflows, facilitating more effective and collaborative statistical research.
Recoverability for Holevo's just-as-good fidelity
Creators: name: Wilde, Mark M.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Quantum Physics (quant-ph)
subject: Information Theory (cs.IT)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Holevo's just-as-good fidelity is a similarity measure for quantum states that has found several applications. One of its critical properties is that it obeys a data processing inequality: the measure does not decrease under the action of a quantum channel on the underlying states. In this paper, I prove a refinement of this data processing inequality that includes an additional term related to recoverability. That is, if the increase in the measure is small after the action of a partial trace, then one of the states can be nearly recovered by the Petz recovery channel, while the other state is perfectly recovered by the same channel. The refinement is given in terms of the trace distance of one of the states to its recovered version and also depends on the minimum eigenvalue of the other state. As such, the refinement is universal, in the sense that the recovery channel depends only on one of the states, and it is explicit, given by the Petz recovery channel. The appendix contains a generalization of the aforementioned result to arbitrary quantum channels.
description: 6 pages, submission to ISIT 2018
Síndrome del Perro Simulador: Consecuencia de una equivocada interpretación y aplicación del significado de bienestar animal
Creators: name: Anzola, Bernadette
Publisher: name: Zenodo
Year: 2021

description: El intercambio afectivo que caracteriza la interacción de los humanos con los perros refuerza el vínculo entre ellos y hace sentir muy bien a la gente. En quienes se sabe que suben los niveles de hormonas que producen sensaciones de bienestar general y bajan los niveles de cortisol. En muchos casos, en los perros se produce el mismo efecto. Sin embargo, dadas ciertas condiciones en las que ocurre una confusión entre lo que es antropomorfismo y bienestar animal, esto puede ser contraproducente para el perro. La ansiedad provocada por la separación o la falta de atención de sus dueños es la consecuencia que puede padecer un perro que siente un apego muy fuerte por sus cuidadores y puede ocasionar la aparición de comportamientos asociados al Síndrome del Perro Simulador.
Informatics for a New Century: Computing Education for the 1990s and Beyond
Creators: name: Shaw, Mary
Publisher: name: Carnegie Mellon University
Year: 1990
Subjects: subject: 80399 Computer Software not elsewhere classified
subject: FOS: Computer and information sciences

description: Information technology and computer scinece have not only reshaped computation, communication and commerce; they have expanded the basic models and paradigms of many disciplines. Informatics education has obligations to all the communities that rely on information technology, not just the computing professionals. Serving this extended audience well requires changes in the content and presentation of computing curricula. This paper sketches the coming needs for information processing and analyzes the populations that will require informatics education. It considers curriculum requirements trhough two examples, one outside the tradional boundary of computer scinece and one inside.
The Lottery Ticket Hypothesis: Finding Sparse, Trainable Neural Networks
Creators: name: Frankle, Jonathan
name: Carbin, Michael
Publisher: name: arXiv
Year: 2018
Subjects: subject: Machine Learning (cs.LG)
subject: Artificial Intelligence (cs.AI)
subject: Neural and Evolutionary Computing (cs.NE)
subject: FOS: Computer and information sciences

description: Neural network pruning techniques can reduce the parameter counts of trained networks by over 90%, decreasing storage requirements and improving computational performance of inference without compromising accuracy. However, contemporary experience is that the sparse architectures produced by pruning are difficult to train from the start, which would similarly improve training performance. We find that a standard pruning technique naturally uncovers subnetworks whose initializations made them capable of training effectively. Based on these results, we articulate the "lottery ticket hypothesis:" dense, randomly-initialized, feed-forward networks contain subnetworks ("winning tickets") that - when trained in isolation - reach test accuracy comparable to the original network in a similar number of iterations. The winning tickets we find have won the initialization lottery: their connections have initial weights that make training particularly effective. We present an algorithm to identify winning tickets and a series of experiments that support the lottery ticket hypothesis and the importance of these fortuitous initializations. We consistently find winning tickets that are less than 10-20% of the size of several fully-connected and convolutional feed-forward architectures for MNIST and CIFAR10. Above this size, the winning tickets that we find learn faster than the original network and reach higher test accuracy.
description: ICLR camera ready
Topological types of 3-dimensional small covers
Creators: name: Lü, Zhi
name: Yu, Li
Publisher: name: arXiv
Year: 2007
Subjects: subject: Geometric Topology (math.GT)
subject: Algebraic Topology (math.AT)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: In this paper we study the (equivariant) topological types of a class of 3-dimensional closed manifolds (i.e., 3-dimensional small covers), each of which admits a locally standard $(\mathbb{Z}_2)^3$-action such that its orbit space is a simple convex 3-polytope. We introduce six equivariant operations on 3-dimensional small covers. These six operations are interesting because of their combinatorial natures. Then we show that each 3-dimensional small cover can be obtained from $\mathbb{R}P^3$ and $S^1\times\mathbb{R}P^2$ with certain $(\mathbb{Z}_2)^3$-actions under these six operations. As an application, we classify all 3-dimensional small covers up to $({\Bbb Z}_2)^3$-equivariant unoriented cobordism.
description: 34 pages with 40 figures, final version for publication
Inferring Reusability of End-User Programmers ’ Code from Low-Ceremony Evidence
Creators: name: Scaffidi, Chris
name: Shaw, Mary
Publisher: name: Carnegie Mellon University
Year: 2009
Subjects: subject: 80399 Computer Software not elsewhere classified
subject: FOS: Computer and information sciences

description: While end-user programmers sometimes combine, learn from, or otherwise reuse existing code to quickly create new programs, not all code is equally reusable. Some code is reused by its creator or by others, but other code simply languishes on servers and never provides any help in the creation of subsequent programs. In this paper, we draw on numerous empirical studies of end-user and professional programmers to show that the reusability of code can be inferred on the basis of “low-ceremony ” evidence. This evidence is information that is often informal, possibly unreliable, but that can be quickly gathered, interpreted and synthesized without the investment of substantial effort or skill by code producers or consumers. In the studies considered here, it includes information about code’s mass appeal, flexibility, understandability, functional size, authorship, and prior reuses. We summarize a simple machine learning model that has successfully predicted reuse of web macros based on this low-ceremony evidence.
Efficient Nonlinear Precoding for Massive MU-MIMO Downlink Systems with 1-Bit DACs
Creators: name: Chu, Lei
name: Wen, Fei
name: Li, Lily
name: Qiu, Robert
Publisher: name: arXiv
Year: 2018
Subjects: subject: Signal Processing (eess.SP)
subject: Optimization and Control (math.OC)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Mathematics

description: The power consumption of digital-to-analog converters (DACs) constitutes a significant proportion of the total power consumption in a massive multiuser multiple-input multiple-output (MU-MIMO) base station (BS). Using 1-bit DACs can significantly reduce the power consumption. This paper addresses the precoding problem for the massive narrow-band MU-MIMO downlink system equipped with 1-bit DACs at each BS. In such a system, the precoding problem plays a central role as the precoded symbols are affected by extra distortion introduced by 1-bit DACs. In this paper, we develop a highly-efficient nonlinear precoding algorithm based on the alternative direction method framework. Unlike the classic algorithms, such as the semidefinite relaxation (SDR) and squared-infinity norm Douglas-Rachford splitting (SQUID) algorithms, which solve convex relaxed versions of the original precoding problem, the new algorithm solves the original nonconvex problem directly. The new algorithm is guaranteed to globally converge under some mild conditions. A sufficient condition for its convergence has been derived. Experimental results in various conditions demonstrated that, the new algorithm can achieve state-of-the-art accuracy comparable to the SDR algorithm, while being much more efficient (more than 300 times faster than the SDR algorithm).
description: 12 pages, 7 figures
The cosmological constant in the brane world of string theory on $S^{1}/Z_{2}$
Creators: name: Wang, Anzhong
name: Santos, N. O.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Orbifold branes in string theory are investigated, and the general field equations on the branes are given explicitly for type II and heterotic string. It is shown that the effective cosmological constant on each of the two branes can be easily lowered to its current observational value, using large extra dimensions. This is also true for type I string. The radion stability is studied by using the Goldberger-Wise mechanism, and shown explicitly that it is stable. Therefore, brane world of string theory provides a viable and built-in mechanism for solving the long-standing cosmological constant problem. Applying the formulas to cosmology, we obtain the generalized Friedmann equations on each of the two branes.
description: Add two new figures, and some typos are corrected. Version to appear in Physics Letters B
Simplicial $G$-complexes and representation stability of polyhedral products
Creators: name: Fu, Xin
name: Grbić, Jelena
Publisher: name: arXiv
Year: 2018
Subjects: subject: Algebraic Topology (math.AT)
subject: Combinatorics (math.CO)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 20C30, 05E10, 55N91, 55U10

description: Representation stability in the sense of Church-Farb is concerned with stable properties of representations of sequences of algebraic structures, in particular of groups. We study this notion on objects arising in toric topology. With a simplicial $G$-complex $K$ and a topological pair $(X, A)$, a $G$-polyhedral product $(X, A)^K$ is associated. We show that the homotopy decomposition [2] of $Σ(X, A)^K$ is then $G$-equivariant after suspension. In the case of $Σ_m$-polyhedral products, we give criteria on simplicial $Σ_m$-complexes which imply representation stability of $Σ_m$-representations $\{H_i((X, A)^{K_m})\}$.
description: To appear in Algebraic & Geometric Topology
title: Spectroscopic confirmation of an extreme starburst at redshift 4.547
Creators: name: Capak, P
name: Carilli, CL
name: Lee, N
name: Aldcroft, T
name: Aussel, H
name: Schinnerer, E
name: Wilson, GW
name: Yun, Min
name: Blain, A
name: Giavalisco, M
name: Ilbert, O
name: Kartaltepe, J
name: Lee, KS
name: McCracken, H
name: Mobasher, B
name: Salvato, M
name: Sasaki, S
name: Scott, KS
name: Sheth, K
name: Shioya, Y
name: Thompson, D
name: Elvis, M
name: Sanders, DB
name: Scoville, NZ
name: Tanaguchi, Y
Publisher: name: University of Massachusetts Amherst
Year: 2008
Subjects: subject: galaxies : evolution
subject: galaxies : formation
subject: galaxies : high-redshift
subject: galaxies : interactions
subject: galaxies : starburst
subject: submillimeter
subject: Astrophysics and Astronomy

description: This is the pre-published version harvested from ArXiv. The published version is located at http://iopscience.iop.org/1538-4357/681/2/L53/
description: We report the spectroscopic confirmation of a submillimeter galaxy (SMG) at z = 4.547 with an estimated LIR = (0.5-2.0) × 1013 L. The spectra, mid-IR, and X-ray properties indicate the bolometric luminosity is dominated by star formation at a rate of >1000 M yr−1. Multiple, spatially separated components are visible in the Lyα line with an observed velocity difference of up to 380 km s−1 and the object morphology indicates a merger. The best-fit spectral energy distribution and spectral line indicators suggest the object is 2-8 Myr old and contains >1010 M of stellar mass. This object is a likely progenitor for the massive early-type systems seen at z ~ 2.
Goldstone modes and photonization for higher form symmetries
Creators: name: Hofman, Diego M.
name: Iqbal, Nabil
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We discuss generalized global symmetries and their breaking. We extend Goldstone's theorem to higher form symmetries by showing that a perimeter law for an extended $p$-dimensional defect operator charged under a continuous $p$-form generalized global symmetry necessarily results in a gapless mode in the spectrum. We also show that a $p$-form symmetry in a conformal theory in $2(p+1)$ dimensions has a free realization. In four dimensions this means any 1-form symmetry in a $CFT_4$ can be realized by free Maxwell electrodynamics, i.e. the current can be photonized. The photonized theory has infinitely many conserved 0-form charges that are constructed by integrating the symmetry currents against suitable 1-forms. We study these charges by developing a twistor-based formalism that is a 4d analogue of the usual holomorphic complex analysis familiar in $CFT_2$. The charges are shown to obey an algebra with central extension, which is an analogue of the 2d Abelian Kac-Moody algebra for higher form symmetries.
description: 7 pages, 1 figure. v2. Added reference and minor clarifications. v3. Acknowledgment added
The Mott metal-insulator transition in the 1D Hubbard model in an external magnetic field
Creators: name: Frahm, Holger
name: Vekua, Temo
Publisher: name: arXiv
Year: 2007
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study the low energy behavior of the one dimensional Hubbard model across the Mott metal-insulator phase transition in an external magnetic field. In particular we calculate elements of the dressed charge matrix at the critical point of the Mott transition for arbitrary Hubbard repulsion and magnetization numerically and, in certain limiting cases, analytically. These results are combined with a non-perturbative effective field theory approach to reveal how the breaking of time reversal symmetry influences the Mott transition.
description: 12 pages, 1 figure
Inferring Method Effect Summaries for Nested Heap Regions
Creators: name: Vakilian, Mohsen
name: Dig, Danny
name: Bocchino, Robert
name: Overbey, Jeffrey
name: Adve, Vikram
name: Johnson, Ralph
Publisher: name: Carnegie Mellon University
Year: 2009
Subjects: subject: 80399 Computer Software not elsewhere classified
subject: FOS: Computer and information sciences

description:  Effect systems are important for reasoning about the side effects of a program. Although effect systems have been around for decades, they have not been widely adopted in practice because of the large number of annotations that they require. A tool that infers effects automatically can make effect systems practical. We present an effect inference algorithm and an Eclipse plug-in, DPJIZER, which alleviate the burden of writing effect annotations for a language called Deterministic Parallel Java (DPJ). The key novel feature of the algorithm is the ability to infer effects on nested heap regions. Besides DPJ, we also illustrate how the algorithm can be used for a different effect system based on object ownership. Our experience shows that DPJIZER is both useful and effective: (i) inferring effect annotations automatically saves significant programming burden; and (ii) inferred effects are more precise than those written manually, and are fine-grained enough to enable the compiler to prove determinism of the program. 
0209 Supplemental Tables.doc
Creators: name: Tsai, Wen-Hsuan
name: Lee, Chun-Chuan
name: Liu, Sung-Chen
name: Chien, Kuo-Liong
name: Cheng, Shih-Ping
name: Tseng, Po-Jung
name: Tsai, Ming-Chieh
Publisher: name: figshare
Year: 2021
Subjects: subject: 110306 Endocrinology
subject: FOS: Clinical medicine

description: The Supplemental Data for Association between thyroid cancer and cardiovascular disease:Ａ systemic review and meta-analysis
High-power, continuous-wave, tunable mid-IR, higher-order vortex beam optical parametric oscillator
Creators: name: Aadhi, A.
name: Sharma, Varun
name: Samanta, G. K.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We report on a novel experimental scheme to generate continuous-wave (cw), high power, and higher-order optical vortices tunable across mid-IR wavelength range. Using cw, two-crystal, singly resonant optical parametric oscillator (T-SRO) and pumping one of the crystals with Gaussian beam and the other crystal with optical vortices of orders, lp = 1 to 6, we have directly transferred the vortices at near-IR to the mid-IR wavelength range. The idler vortices of orders, li = 1 to 6, are tunable across 2276-3576 nm with a maximum output power of 6.8 W at order of, li = 1, for the pump power of 25 W corresponding to a near-IR vortex to mid-IR vortex conversion efficiency as high as 27.2%. Unlike the SROs generating optical vortices restricted to lower orders due to the elevated operation threshold with pump vortex orders, here, the coherent energy coupling between the resonant signals of the crystals of T-SRO facilitates the transfer of pump vortex of any order to the idler wavelength without stringent operation threshold condition. The generic experimental scheme can be used in any wavelength range across the electromagnetic spectrum and in all time scales from cw to ultrafast regime.
description: 4 pages, 5 figures
Stable, Accelerating Universes in Modified Gravity
Creators: name: DeDeo, Simon
name: Psaltis, Dimitrios
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Modifications to gravity that add additional functions of the Ricci curvature to the Einstein-Hilbert action -- collectively known as $f(R)$ theories -- have been studied in great detail. When considered as complete theories of gravity they can generate non-perturbative deviations from the general relativistic predictions in the solar system, and the simplest models show instabilites on cosmological scales. Here we show that it is possible to treat $f(R)=R\pmμ^4/R$ gravity in a perturbative fashion such that it shows no instabilities on cosmological scales and, in the solar system, is consistent with measurements of the PPN parameters. We show that such a theory produces a spatially flat, accelerating universe, even in the absence of dark energy and when the matter density is too small to close the universe in the general relativistic case.
description: 5 pages, 1 figure, matches published version
Batched quantum state exponentiation and quantum Hebbian learning
Creators: name: Bromley, Thomas R.
name: Rebentrost, Patrick
Publisher: name: arXiv
Year: 2018
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Machine learning is a crucial aspect of artificial intelligence. This paper details an approach for quantum Hebbian learning through a batched version of quantum state exponentiation. Here, batches of quantum data are interacted with learning and processing quantum bits (qubits) by a series of elementary controlled partial swap operations, resulting in a Hamiltonian simulation of the statistical ensemble of the data. We decompose this elementary operation into one and two qubit quantum gates from the Clifford+T set and use the decomposition to perform an efficiency analysis. Our construction of quantum Hebbian learning is motivated by extension from the established classical approach, and it can be used to find details about the data such as eigenvalues through phase estimation. This work contributes to the near-term development and implementation of quantum machine learning techniques.
description: 9 pages, 3 figures
Self-Regulation of Solar Coronal Heating Process via Collisionless Reconnection Condition
Creators: name: Uzdensky, Dmitri A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: Plasma Physics (physics.plasm-ph)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: I propose a new paradigm for solar coronal heating viewed as a self-regulating process keeping the plasma marginally collisionless. The mechanism is based on the coupling between two effects. First, coronal density controls the plasma collisionality and hence the transition between the slow collisional Sweet-Parker and the fast collisionless reconnection regimes. In turn, coronal energy release leads to chromospheric evaporation, increasing the density and thus inhibiting subsequent reconnection of the newly-reconnected loops. As a result, statistically, the density fluctuates around some critical level, comparable to that observed in the corona. In the long run, coronal heating can be represented by repeating cycles of fast reconnection events (nano-flares), evaporation episodes, and long periods of slow magnetic stress build-up and radiative cooling of the coronal plasma.
description: 4 pages; Phys. Rev. Lett., in press
Inferring Genotype from Clinical Phenotype through a Knowledge Based Algorithm
Creators: name: Malin, Bradley
name: Sweeney, Latanya
Publisher: name: Carnegie Mellon University
Year: 2002
Subjects: subject: 80399 Computer Software not elsewhere classified
subject: FOS: Computer and information sciences

description: Genomic information is becoming increasingly useful for studying the origins of disease. Recent studies have focused on discovering new genetic loci and the influence of these loci upon disease. However, it is equally desirable to go in the opposite direction – that is, to infer genotype from the clinical phenotype for increased efficiency of treatment. This paper proposes a methodology for such inference. Our method constructs a simple knowledge-based model without the need of a domain expert and is useful in situations that have very little data and/or no training data. The model relates a disease’s symptoms to particular clinical states of the disease. Clinical information is processed using the model, where appropriate weighting of the symptoms is learned from observed diagnoses to subsequently identify the state of the disease presented in hospital visits. This approach applies to any simple genetic disorder that has defined clinical phenotypes. We demonstrate the use of our methods by inferring age of onset and DNA mutations for Huntington’s disease patients.
Limit curve theorems in Lorentzian geometry
Creators: name: Minguzzi, E.
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The subject of limit curve theorems in Lorentzian geometry is reviewed. A general limit curve theorem is formulated which includes the case of converging curves with endpoints and the case in which the limit points assigned since the beginning are one, two or at most denumerable. Some applications are considered. It is proved that in chronological spacetimes, strong causality is either everywhere verified or everywhere violated on maximizing lightlike segments with open domain. As a consequence, if in a chronological spacetime two distinct lightlike lines intersect each other then strong causality holds at their points. Finally, it is proved that two distinct components of the chronology violating set have disjoint closures or there is a lightlike line passing through each point of the intersection of the corresponding boundaries.
description: 25 pages, 1 figure. v2: Misprints fixed, matches published version
Holographic dual to charged SYK from 3D Gravity and Chern-Simons
Creators: name: Gaikwad, Adwait
name: Joshi, Lata Kh
name: Mandal, Gautam
name: Wadia, Spenta R.
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: In this paper, we obtain a bulk dual to SYK model, including SYK model with $U(1)$ charge, by Kaluza-Klein (KK) reduction from three dimensions. We show that KK reduction of the 3D Einstein action plus its boundary term gives the Jackiw-Teitelboim (JT) model in 2D with the appropriate 1D boundary term. The size of the KK radius gets identified with the value of the dilaton in the resulting near-AdS$_2$ geometry. In presence of U(1) charge, the 3D model additionally includes a $U(1)$ Chern-Simons (CS) action. In order to describe a boundary theory with non-zero chemical potential, we also introduce a coupling between CS gauge field and bulk gravity. The 3D CS action plus the new coupling term with appropriate boundary terms reduce in two dimensions to a BF-type action plus a source term and boundary terms. The KK reduced 2D theory represents the soft sector of the charged SYK model. The pseudo-Nambu-Goldstone modes of combined $\textit{Diff} /\mathbb{SL}(2,\mathbb{R})$ and $U(1)_{\rm local}/U(1)$ transformations are represented by combined large diffeomorphisms and large gauge transformations. The effective action of the former is reproduced by the action cost of the latter in the bulk dual, after appropriate identification of parameters. We compute chaotic correlators from the bulk and reproduce the result that the contribution from the "boundary photons" corresponds to zero Liapunov exponent.
description: New boundary counter terms and their 3D origin is given. A section on two points of view to understand the pseudo-Nambu-Goldstone mode added. Appendix D and E added
Indirect Control Path Analysis and Goal Coverage Strategies for Elaborating System Safety Goals in Composite Systems
Creators: name: Black, Jennifer
name: Koopman, Philip
Publisher: name: Carnegie Mellon University
Year: 2008
Subjects: subject: 80399 Computer Software not elsewhere classified
subject: FOS: Computer and information sciences

description: Correctly specifying requirements for composite systems is essential to system safety, particularly in a distributed development environment. Goal-oriented requirements engineering can be used to formally specify system goals and decompose them into realizable sub-goals for system components. However, an additional aim of safety goal elaboration is to meet a goal coverage strategy. In this paper we propose new tactics for elaborating system safety goals across a composite system. First, Indirect Control Path Analysis (ICPA) is used to identify safety-related components and their relationships to the parent goals. Then, goal coverage strategies guide goal elaboration along indirect control paths identified by the ICPA. We demonstrate applicability in real safety critical embedded systems with two case studies: a distributed elevator and a semiautonomous automotive system.