cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Descargar PDF EL CABALLO DORADO
Creators: name: Villalobos
Publisher: name: Zenodo
Year: 2024

description: EL CABALLO DORADO de SERGIO RAMIREZ

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EL CABALLO DORADO

SERGIO RAMIREZ

Idioma: CASTELLANO

Formatos: Pdf, ePub, MOBI, FB2

ISBN: 9788420477152

Editorial: ALFAGUARA

Año de edición: 2024

 

 

 

 

 

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Overview

La crítica ha dicho:"Sergio Ramírez es uno de los referentes literarios, morales y políticos de la literatura en español desde hace ya decadas".Carlos Zanón, Babelia "Sergio Ramírez borda la desolación, el espanto y la insignificancia humana".Domingo Ródenas de Moya, Babelia "La creciente maestría de un escritor excepcional que cabalga lento y avizor por territorios inhóspitos con violenta carnadura de epopeya social".Horacio Otheguy Riveira, Culturamas"Sergio Ramírez me ha parecido siempre un ser humano extraordinario [...]. Su vida es una mezcla ardiente de una doble pasión: las palabras y la justicia. Las palabras como un delirio, como un juego, como un reto, como un placer. La justicia convertida en el diario afán con que ama, reniega y lucha por Nicaragua".Çngeles Mastretta"Sergio Ramírez ha demostrado la rara virtud de contar una historia no para hacernos creer en ella (a estas alturas, casi un abuso de confianza) sino para compartir el hecho de contarla".Julio Ortega "Una novela adictiva. Es alta literatura, en ella todo está paladeado y escritocon esa capacidad que sólo tienen los buenos escritores de ir más allá".Luisge Martín (sobre Ya nadie llora por mí)
Rotation Sets of Open Billiards
Creators: name: Alsheekhhussain, Zainab
Publisher: name: arXiv
Year: 2015
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: We investigate the rotation sets of open billiards in $\mathbb{R}^N$ for the natural observable related to a starting point of a given billiard trajectory. We prove that the general rotation set is convex and the set of all convex combinations of rotation vectors of periodic trajectory $P_ϕ$ is dense in it. We provide a constructive proof which illustrates that the set $P_ϕ$ is dense in the pointwise rotation set, and the closure of the pointwise rotation set is convex. We also consider a class of billiards consisting of three obstacles and construct a sequence in the symbol space such that its rotation vector is not defined.
description: 19
Fine structure of near-band-edge photoluminescence in He+-irradiated GaN grown on SiC
Creators: name: Krasnobaev, L. Y.
name: Joshkin, V. A.
name: Cuomo, J. J.
name: Bedair, S. M.
name: Parker, C. A.
name: Suvkhanov, A.
name: Davis, R. F.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1998

description: The effect of He ion implantation on the optical properties of epitaxial GaN-on-SiC was studied. We observed that He + irradiation increases the relative intensity of the “blue emission” and resistivity of GaN films and decreases the intensity of the near-band-edge photoluminescence. Because the intensity of the main peak is drastically decreased, the fine structure of the near-band-edge photoluminescence in GaN after He + irradiation was observed. From a comparison of observed sharp lines with photoluminescence peaks of GaNdoped with oxygen, we conclude that oxygen can produce a complex, which is characterized by a strong localization of free carriers and a large lattice distortion. The zero-phonon line of this defect has energy close to the band-gap energy of GaN.
Sparse Pseudo-input Local Kriging for Large Spatial Datasets with Exogenous Variables
Creators: name: Farmanesh, Babak
name: Pourhabib, Arash
Publisher: name: arXiv
Year: 2015
Subjects: subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: We study large-scale spatial systems that contain exogenous variables, e.g. environmental factors that are significant predictors in spatial processes. Building predictive models for such processes is challenging because the large numbers of observations present makes it inefficient to apply full Kriging. In order to reduce computational complexity, this paper proposes Sparse Pseudo-input Local Kriging (SPLK), which utilizes hyperplanes to partition a domain into smaller subdomains and then applies a sparse approximation of the full Kriging to each subdomain. We also develop an optimization procedure to find the desired hyperplanes. To alleviate the problem of discontinuity in the global predictor, we impose continuity constraints on the boundaries of the neighboring subdomains. Furthermore, partitioning the domain into smaller subdomains makes it possible to use different parameter values for the covariance function in each region and, therefore, the heterogeneity in the data structure can be effectively captured. Numerical experiments demonstrate that SPLK outperforms, or is comparable to, the algorithms commonly applied to spatial datasets.
description: 50 pages, 9 figures, one table; added a simulated dataset
A Novel Survey for Young Substellar Objects with the W band Filter.V. IC 348 and Barnard 5 in the Perseus Cloud
Creators: name: Lalchand, Bhavana
name: Chen, Wen-Ping
name: Biller, Beth A.
name: Albert, Loic
name: Allers, Katelyn
name: Dubber, Sophie
name: Zhang, Zhoujian
name: Liu, Michael C.
name: Jose, Jessy
name: Damian, Belinda
name: Sharma, Tanvi
name: Bonnefoy, Mickael
name: Oasa, Yumiko
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We report the discovery of substellar objects in the young star cluster IC 348 and the neighboring Barnard 5 dark cloud, both at the eastern end of the Perseus star-forming complex. The substellar candidates are selected using narrowband imaging, i.e., on and off photometric technique with a filter centered around the water absorption feature at 1.45 microns, a technique proven to be efficient in detecting water-bearing substellar objects. Our spectroscopic observations confirm three brown dwarfs in IC 348. In addition, the source WBIS 03492858+3258064, reported in this work, is the first confirmed brown dwarf discovered toward Barnard 5. Together with the young stellar population selected via near- and mid-infrared colors using the Two Micron All Sky Survey and the Wide-field Infrared Survey Explorer, we diagnose the relation between stellar versus substellar objects with the associated molecular clouds. Analyzed by Gaia EDR3 parallaxes and kinematics of the cloud members across the Perseus region, we propose the star formation scenario of the complex under influence of the nearby OB association.
description: Accepted for publication in the Astrophysical Journal. 24 pages, 14 figures, 5 tables
Large current density from carbon nanotube field emitters
Creators: name: Zhou, O.
name: Kochanski, G.
name: Zhu, W.
name: Bower, C.
name: Jin, S.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1999

description: We observe that field emitters made from carbon nanotubes exhibit excellent macroscopic emission properties; they can operate at a very large current density, as high as 4 A/cm2. At electric fields as low as 4–7 V/μm, they emit technologically useful current densities of 10 mA/cm2. We show that the emission originates from nanotube ends with a characteristic structured ring pattern. The emission characteristics and durability of the carbon nanotube cold cathodes offer promising applications for vacuum microelectronic devices.
Supplementary methods, results, and analyses from The biological basis of Taylor's power law revisited: using host–parasite interactions to reveal the drivers of aggregation
Creators: name: Johnson, Pieter T. J.
name: Wilber, Mark Q.
Publisher: name: The Royal Society
Year: 2017
Subjects: subject: Ecology
subject: FOS: Biological sciences
subject: Health Care
subject: Diseases
subject: 111706 Epidemiology
subject: FOS: Health sciences

description: Additional details on field sampling, experimental infections, and statistical analyses.
(3113) Elizabeth Joyce Carter
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
Online Read Ebook La Leçon du mal
Creators: name: Jones
Publisher: name: Zenodo
Year: 2024

description: La Leçon du mal pan Yûsuke Kishi, Diane Durocher

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Caractéristiques

La Leçon du mal

Yûsuke Kishi, Diane Durocher

Nb. de pages: 544

Format: Pdf, ePub, MOBI, FB2

ISBN: 9782714494610

Editeur: Belfond

Date de parution: 2022

 

 

 

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Overview

De l'avis de tous, Seiji Hasumi est le professeur le plus charmant, le plus séduisant, le plus charismatique du lycée Shinkô Gakuin de Machida. Adulé de ses élèves, admiré de ses collègues, apprécié de sa direction, le jeune homme est fin, drôle, toujours prêt à voler au secours des uns, à aider les autres, à combattre les injustices et le harcèlement, à dénouer les conflits. Hasumi est tout cela et pire encore. Hasumi est un psychopathe. Manipulateur, calculateur, pervers, prêt à tout pour prendre le contrôle et asseoir son pouvoir. Un être violent, qui n'hésite pas à éliminer quiconque se met en travers de sa route. Trois élèves l'ont percé à jour. Commence alors une traque terrifiante, aux conséquences inimaginables...
UnCommonSense: Informative Negative Knowledge about Everyday Concepts
Creators: name: Arnaout, Hiba
name: Razniewski, Simon
name: Weikum, Gerhard
name: Pan, Jeff Z.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Artificial Intelligence (cs.AI)
subject: Information Retrieval (cs.IR)
subject: FOS: Computer and information sciences

description: Commonsense knowledge about everyday concepts is an important asset for AI applications, such as question answering and chatbots. Recently, we have seen an increasing interest in the construction of structured commonsense knowledge bases (CSKBs). An important part of human commonsense is about properties that do not apply to concepts, yet existing CSKBs only store positive statements. Moreover, since CSKBs operate under the open-world assumption, absent statements are considered to have unknown truth rather than being invalid. This paper presents the UNCOMMONSENSE framework for materializing informative negative commonsense statements. Given a target concept, comparable concepts are identified in the CSKB, for which a local closed-world assumption is postulated. This way, positive statements about comparable concepts that are absent for the target concept become seeds for negative statement candidates. The large set of candidates is then scrutinized, pruned and ranked by informativeness. Intrinsic and extrinsic evaluations show that our method significantly outperforms the state-of-the-art. A large dataset of informative negations is released as a resource for future research.
(3114) Charles Anthony Brett
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
Anisotropic magnetic susceptibility of multiwalled carbon nanotubes
Creators: name: Jin, L.
name: Zhou, O.
name: Tsui, F.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2000

description: Magnetic susceptibility of partially aligned multiwalled carbon nanotubes has been studied using superconducting quantum interference device magnetometry. Partial alignment of multiwalled nanotubes was produced by uniaxially straining composites of carbon nanotubes embedded in polymer matrices. The degree of alignment was determined by x-ray diffraction. The observed magnetic response is diamagnetic and anisotropic with the component along the nanotubes less diamagnetic than that of the perpendicular. The observed anisotropy is consistent with theoretical predictions, but it contradicts earlier experimental findings.
Wideband Self-Adaptive RF Cancellation Circuit for Full-Duplex Radio: Operating Principle and Measurements
Creators: name: Huusari, Timo
name: Choi, Yang-Seok
name: Liikkanen, Petteri
name: Korpi, Dani
name: Talwar, Shilpa
name: Valkama, Mikko
Publisher: name: arXiv
Year: 2015
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: This paper presents a novel RF circuit architecture for self-interference cancellation in inband full-duplex radio transceivers. The developed canceller is able to provide wideband cancellation with waveform bandwidths in the order of 100 MHz or beyond and contains also self-adaptive or self-healing features enabling automatic tracking of time-varying self-interference channel characteristics. In addition to architecture and operating principle descriptions, we also provide actual RF measurements at 2.4 GHz ISM band demonstrating the achievable cancellation levels with different bandwidths and when operating in different antenna configurations and under low-cost highly nonlinear power amplifier. In a very challenging example with a 100 MHz waveform bandwidth, around 41 dB total cancellation is obtained while the corresponding cancellation figure is close to 60 dB with the more conventional 20 MHz carrier bandwidth. Also, efficient tracking in time-varying reflection scenarios is demonstrated.
description: 7 pages, to be presented in 2015 IEEE 81st Vehicular Technology Conference
Resilience assessment and improvement for electric power transmission systems against typhoon disasters: A data-model hybrid driven approach
Creators: name: Yang, Rui
name: Li, Yang
Publisher: name: arXiv
Year: 2022
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: In response to the damage to electric power transmission systems caused by typhoon disasters in coastal areas, a planning-targeted resilience assessment framework that considers the impact of multiple factors is established to accurately find the weak links of the transmission system and improve the system resilience. Firstly, this paper constructs the attenuation model of the wind field and the comprehensive failure model of the system, in which the model drive to establish the cumulative failure model of the transmission system is adopted, and multiple data-driven schemes to correct the cumulative failure rate by relying on the feature factor information of the transmission system is adopted. At the same time, an analytic hierarchy process-weighted arithmetic averaging (AHP-WAA) method is introduced to select the optimal data-driven evaluation scheme. Secondly, this paper adopts the impact-increment-based state enumeration (IISE) method to establish resilience indicators for systems and corridors separately. On this basis, the optimal promotion strategy is selected according to the construction difficulty, resilience improvement ability, and cost analysis. Finally, simulations on the IEEE RTS-79 system have been carried out considering the influence of the real typhoon scenarios, micro-topographic and transmission corridor information factors. The results demonstrate that the hybrid-driven system resilience assessment and improvement method can assist planners in accurately judging the resilience level of the system against typhoon disasters and selecting the best resilience improvement strategy based on the cost-effectiveness ratio.
description: Accepted by Energy Reports
Fluorescence profile of a nitrogen-vacancy center in a nanodiamond
Creators: name: Sun, Qiang
name: Li, Shuo
name: Plakhotnik, Taras
name: Greentree, Andrew D.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Nanodiamonds containing luminescent point defects are widely explored for applications in quantum bio-sensing such as nanoscale magnetometry, thermometry, and electrometry. A key challenge in the development of such applications is a large variation in fluorescence properties observed between particles, even when obtained from the same batch or nominally identical fabrication processes. By theoretically modelling the emission of nitrogen-vacancy colour centres in spherical nanoparticles, we are able to show that the fluorescence spectrum varies with the exact position of the emitter within the nanoparticle, with noticeable effects seen when the diamond radius, $a$, is larger than around 100 nm, and significantly modified fluorescence profiles found for larger particles when $a=200$ nm and $a=300$ nm, while negligible effects below $a=100$ nm. These results show that the reproducible geometry of point defect position within narrowly sized batch of diamond crystals is necessary for controlling the emission properties. Our results are useful for understanding the extent to which nanodiamonds can be optimised for bio-sensing applications.
Supplementary Table S2 from Sequencing of the variable region of rpsB to discriminate between Streptococcus pneumoniae and other streptococcal species.
Creators: name: Wyllie, Anne L.
name: Pannekoek, Yvonne
name: Bovenkerk, Sandra
name: Gastelaars, Jody Van Engelsdorp
name: Ferwerda, Bart
name: Beek, Diederik Van De
name: Sanders, Elisabeth A. M.
name: Trzciński, Krzysztof
name: Ende, Arie Van Der
Publisher: name: The Royal Society
Year: 2017
Subjects: Molecular Biology

description: Number (%) of non-pneumococcal streptococcal strains positive when tested in molecular assays for common pneumococcal molecular targets
Application of carbon nanotubes as electrodes in gas discharge tubes
Creators: name: Fleming, L.
name: Stoner, B.
name: Zhou, O.
name: Debbault, C.
name: Shimoda, H.
name: Simendinger, W.
name: Rosen, R.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2000

description: Gas-tube protector units are used in telecom network interface device boxes and central office switching gears to provide protection from lightning and alternating current power cross faults on the telecom network. Current gas discharge tube (GDT) protector units are unreliable from the standpoint of mean turn-on voltage and run-to-run variability. Molybdenum electrodes with various interlayer materials were coated with single-walled carbon nanotubes and analyzed for both electron field emission and discharge properties. A mean direct current breakdown voltage of 448.5 V and a standard deviation of 4.8 V over 100 surges were observed in nanotube-based GDTs with 1 mm gap spacing between the electrodes. The breakdown reliability is a factor of 4–20 better and the breakdown voltage is ∼30% lower than the two commercial products measured. The enhanced performance shows that nanotube-based GDTs are attractive overvoltage protection units in advanced telecom networks. © 2000 American Institute of Physics.
Supplementary Table S2 from Sequencing of the variable region of rpsB to discriminate between Streptococcus pneumoniae and other streptococcal species
Creators: name: Wyllie, Anne L.
name: Pannekoek, Yvonne
name: Bovenkerk, Sandra
name: Gastelaars, Jody Van Engelsdorp
name: Ferwerda, Bart
name: Beek, Diederik Van De
name: Sanders, Elisabeth A. M.
name: Trzciński, Krzysztof
name: Ende, Arie Van Der
Publisher: name: The Royal Society
Year: 2017
Subjects: Molecular Biology

description: Number (%) of non-pneumococcal streptococcal strains positive when tested in molecular assays for common pneumococcal molecular targets
First post-Newtonian $N$-body problem in Einstein-Cartan theory with the Weyssenhoff fluid: equations of motion
Creators: name: Battista, Emmanuele
name: De Falco, Vittorio
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We derive the equations of motion for an $N$-body system in the Einstein-Cartan gravity theory at the first post-Newtonian order by exploiting the Weyssenhoff fluid as the spin model. Our approach consists in performing the point-particle limit of the continuous description of the gravitational source. The final equations provide a hint for the validity of the effacing principle at 1PN level in Einstein-Cartan model. The analogies with the general relativistic dynamics involving the macroscopic angular momentum are also discussed.
description: Paper features: 13 pages; 1 figure; 67 references. Accepted on EPJ C on the 20th of August 2022
Multi-Behavior Recommendation with Cascading Graph Convolution Networks
Creators: name: Cheng, Zhiyong
name: Han, Sai
name: Liu, Fan
name: Zhu, Lei
name: Gao, Zan
name: Peng, Yuxin
Publisher: name: arXiv
Year: 2023
Subjects: subject: Information Retrieval (cs.IR)
subject: FOS: Computer and information sciences

description: Multi-behavior recommendation, which exploits auxiliary behaviors (e.g., click and cart) to help predict users' potential interactions on the target behavior (e.g., buy), is regarded as an effective way to alleviate the data sparsity or cold-start issues in recommendation. Multi-behaviors are often taken in certain orders in real-world applications (e.g., click>cart>buy). In a behavior chain, a latter behavior usually exhibits a stronger signal of user preference than the former one does. Most existing multi-behavior models fail to capture such dependencies in a behavior chain for embedding learning. In this work, we propose a novel multi-behavior recommendation model with cascading graph convolution networks (named MB-CGCN). In MB-CGCN, the embeddings learned from one behavior are used as the input features for the next behavior's embedding learning after a feature transformation operation. In this way, our model explicitly utilizes the behavior dependencies in embedding learning. Experiments on two benchmark datasets demonstrate the effectiveness of our model on exploiting multi-behavior data. It outperforms the best baseline by 33.7% and 35.9% on average over the two datasets in terms of Recall@10 and NDCG@10, respectively.
description: Accepted by WWW 2023
(3115) Alfred Edward Brett
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
Role of transparency of platinum-ferromagnet interface in determining intrinsic magnitude of spin Hall effect
Creators: name: Zhang, Weifeng
name: Han, Wei
name: Jiang, Xin
name: Yang, See-Hun
name: Parkin, Stuart S. P.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The spin Hall effect (SHE) converts charge current to pure spin currents in orthogonal directions in materials that have significant spin-orbit coupling.The efficiency of the conversion is described by the spin Hall Angle (SHA). The SHA can most readily be inferred by using the generated spin currents to excite or rotate the magnetization of ferromagnetic films or nano-elements via spin-transfer torques.Some of the largest spin torque derived spin Hall angles (ST-SHA) have been reported in platinum. Here we show, using spin torque ferromagnetic resonance (ST-FMR) measurements, that the transparency of the Pt-ferromagnet interface to the spin current plays a central role in determining the magnitude of the ST-SHA. We measure a much larger ST-SHA in Pt/cobalt (~0.11) compared to Pt/permalloy (~0.05) bilayers when the interfaces are assumed to be completely transparent. Taking into account the transparency of these interfaces, as derived from spin-mixing conductances, we find that the intrinsic SHA in platinum has a much higher value of 0.19 +- 0.04 as compared to the ST-SHA. The importance of the interface transparency is further exemplified by the insertion of atomically thin magnetic layers at the Pt/permalloy interface that we show strongly modulates the magnitude of the ST-SHA.
description: 15 pages, 5 figures in Nature Physics (2015)
Nucleation and growth of carbon nanotubes by microwave plasma chemical vapor deposition
Creators: name: Bower, Chris
name: Jin, Sungho
name: Zhu, Wei
name: Zhou, Otto
name: Werder, D. J.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2000

description: The nucleation and growth of aligned multiwall carbon nanotubes by microwave plasma-enhanced chemical vapor deposition have been studied. The nanotubes nucleate and grow from catalytic cobalt islands on a silicon substrate surface, with both their diameter and length dependent on the size of the cobalt islands. Electron microscopy reveals that the nanotubes grow via a “base growth” mechanism. The nanotubes grow initially at a very rapid and constant rate (∼100 nm/s) that decreases sharply after the catalyst Co particles become fully encapsulated by the nanotubes. We propose a detailed model to explain these experimental observations on nucleation and growth of nanotubes.
Mobile Node Localization via Pareto Optimization: Algorithm and Fundamental Performance Limitations
Creators: name: De Angelis, Alessio
name: Fischione, Carlo
Publisher: name: arXiv
Year: 2015
Subjects: subject: Information Theory (cs.IT)
subject: Robotics (cs.RO)
subject: Optimization and Control (math.OC)
subject: Statistics Theory (math.ST)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: Accurate estimation of the position of network nodes is essential, e.g., in localization, geographic routing, and vehicular networks. Unfortunately, typical positioning techniques based on ranging or on velocity and angular measurements are inherently limited. To overcome the limitations of specific positioning techniques, the fusion of multiple and heterogeneous sensor information is an appealing strategy. In this paper, we investigate the fundamental performance of linear fusion of multiple measurements of the position of mobile nodes, and propose a new distributed recursive position estimator. The Cramér-Rao lower bounds for the parametric and a-posteriori cases are investigated. The proposed estimator combines information coming from ranging, speed, and angular measurements, which is jointly fused by a Pareto optimization problem where the mean and the variance of the localization error are simultaneously minimized. A distinguished feature of the method is that it assumes a very simple dynamical model of the mobility and therefore it is applicable to a large number of scenarios providing good performance. The main challenge is the characterization of the statistical information needed to model the Fisher information matrix and the Pareto optimization problem. The proposed analysis is validated by Monte Carlo simulations, and the performance is compared to several Kalman-based filters, commonly employed for localization and sensor fusion. Simulation results show that the proposed estimator outperforms the traditional approaches that are based on the extended Kalman filter when no assumption on the model of motion is used. In such a scenario, better performance is achieved by the proposed method, but at the price of an increased computational complexity.
description: IEEE Journal on Selected Areas in Communications (To Appear), 2015
Austrothurgus Gonzalez & Engel. We 2013, new genus
Creators: name: Gonzalez, Victor H.
name: Engel, Michael S.
name: Griswold, Terry L.
Publisher: name: Zenodo
Year: 2013
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Megachilidae
Austrothurgus

description: Austrothurgus Gonzalez & Engel, new genus
ZooBank urn:lsid:zoobank.org:act: 466F096E-7492-4B12-BD0B-4DD1A6E9D220
 TYPE SPECIES: Lithurgus rubricatus Smith, 1853.
DIAGNOSIS: This genus can be readily distinguished from all other lithurgine genera by the following combination of characters: arolia present in males, absent in females; first flagellomere long in both sexes, at least 1.5 times longer than broad, about twice as long as second, which is much broader than long; female facial prominence mostly involving base of clypeus; and male metabasitarsus with distinct, strong carina on inner surface (Figs. 5, 10, 15).
DESCRIPTION: Robust, middle-sized species (10‒15 mm in body length) with apical fascia on metasomal terga; epistomal sulcus present between tentorial pits in both sexes; labrum about as long as clypeus, with strong transverse ridge at base; facial prominence involving base of clypeus, poorly developed in male; maxillary and labial palpi tetramerous (four-segmented); first flagellomere long, at least 1.5 times longer than broad, about twice as long as second, which is much broader than long; pretarsal claws simple in female, cleft in male; aroliae absent in female, present in male; female tibiae tuberculate on outer surfaces, in male tubercles reduced on mesotibia and absent on metatibia; metabasitarsus slightly shorter than metatibia in female, slightly longer than half metatibial length in male; metatibial spurs slender, not or scarcely bent apically.
ETYMOLOGY: The new genus-group name makes reference to the Australian distribution of this taxon. The name is masculine.
 COMMENTS: Austrothurgus is most similar to Lithurgus in the proportions of the first and second flagellomeres in both sexes, but it can be distinguished by the presence of the arolia in the male, the female facial prominence mostly involving the base of the clypeus, and the male metabasitarsus with an inner asetose area projecting into a distinct carina. In Lithurgus the arolia are absent or rudimentary in both sexes, the female facial prominence involves the base of the clypeus and part of the supraclypeal area, and the inner asetose area of the male metabasitarsus is usually absent, and when present (e.g., L. atratus Smith, L. huberi), it does not project into a distinct carina.
 INCLUDED SPECIES: In addition to the type species, A. rubricatus, the genus includes A. cognatus (Smith, 1868) and A. malgaru Gonzalez, Engel, & Griswold, new species (vide infra).
description: Published as part of Gonzalez, Victor H., Engel, Michael S. & Griswold, Terry L., 2013, The lithurgine bees of Australia (Hymenoptera: Megachilidae), with a note on Megachile rotundipennis, pp. 1-19 in Journal of Melittology 2013 (11) on page 3, DOI: 10.17161/jom.v0i11.4520, http://zenodo.org/record/13737296
Plasma-induced alignment of carbon nanotubes
Creators: name: Jin, Sungho
name: Zhou, Otto
name: Zhu, Wei
name: Bower, Chris
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2000

description: Uniform films of well-aligned carbon nanotubes have been grown using microwave plasma-enhanced chemical vapor deposition. It is shown that nanotubes can be grown on contoured surfaces and aligned in a direction always perpendicular to the local substrate surface. The alignment is primarily induced by the electrical self-bias field imposed on the substrate surface from the plasma environment. It is found that switching the plasma source off effectively turns the alignment mechanism off, leading to a smooth transition between the plasma-grown straight nanotubes and the thermally grown “curly” nanotubes. The nanotubes grow at a surprisingly high rate of ∼100 nm/s in our plasma process, which may be important for large-scale commercial production of nanotubes.
Hadronic Uncertainties versus New Physics for the $W$ boson Mass and Muon $g-2$ Anomalies
Creators: name: Athron, Peter
name: Fowlie, Andrew
name: Lu, Chih-Ting
name: Wu, Lei
name: Wu, Yongcheng
name: Zhu, Bin
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: There are now two single measurements of precision observables that have major anomalies in the Standard Model: the recent CDF measurement of the $W$ mass shows a $7σ$ deviation and the Muon $g-2$ experiment at FNAL confirmed a long-standing anomaly, implying a $4.2 σ$ deviation. Doubts regarding new physics interpretations of these anomalies could stem from uncertainties in the common hadronic contributions. We demonstrate that these two anomalies pull the hadronic contributions in opposite directions by performing electroweak fits in which the hadronic contribution was allowed to float. The fits show that including the $g - 2$ measurement worsens the tension with the CDF measurement and conversely that adjustments that alleviate the CDF tension worsen the $g-2$ tension beyond $5 σ$. This means that if we adopt the CDF $W$ mass measurement, the case for new physics in either the $W$ mass or muon $g-2$ is inescapable regardless of the size of the SM hadronic contributions. Lastly, we demonstrate that a mixed scalar leptoquark extension of the Standard Model could explain both anomalies simultaneously.
description: 8 pages, 3 Figures. Comments are welcome; v2: tables and plots updated; v3: match the pulished version; v4: improve the supplemental Material
(3108) Helen [Nadin]
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
IMPERFECTAS NAVIDADES
Creators: name: Turner
Publisher: name: Zenodo
Year: 2024

description: IMPERFECTAS NAVIDADES EBOOK de CHERRY CHIC

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IMPERFECTAS NAVIDADES EBOOK

CHERRY CHIC

Idioma: CASTELLANO

Formatos: Pdf, ePub, MOBI, FB2

ISBN: 9788419357427

Editorial: MONTENA

Año de edición: 2023

 

 

 

 

 

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Overview

¡La esperadísima vuelta a la comedia más romántica de Cherry Chic! Un divertido, emocionante y precioso relato navideño.Olivia Rivera odia la Navidad. Y a Noah Merry.Noah Merry odia que Olivia sea tan testaruda, orgullosa y rencorosa. Y también odia que ella se empeñe en hacerle la vida difícil sin importarle que sea su jefe.Nora y Nicholas, abuelos de Noah y dueños del hotel Merry, están hartos de la tensión que reina entre sus empleados, así que esta Navidad tienen una misión: conseguir que sus trabajadores se unan y descubran que, en realidad, no se odian tanto como creen.25 días.25 pruebas navideñasUna cuenta de Tik Tok retransmitiéndolo todo en directo.Líos, engaños, reproches y una buena porción de rencor.¿Qué podría salir mal?
Triple Higgs boson production at a 100 TeV proton-proton collider
Creators: name: Papaefstathiou, Andreas
name: Sakurai, Kazuki
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We consider triple Higgs boson production at a future 100 TeV proton-proton collider. We perform a survey of viable final states and compare and contrast triple production to Higgs boson pair production. Focussing on the $hhh \rightarrow (b\bar{b}) (b\bar{b}) (γγ)$ final state, we construct a baseline analysis for the Standard Model scenario and simple deformations, demonstrating that the process merits investigation in the high-luminosity phase of the future collider as a new probe of the self-coupling sector of the Higgs boson.
description: Corrected version of Figure 6
Online Read Ebook Feu pâle
Creators: name: Pennell
Publisher: name: Zenodo
Year: 2024

description: Feu pâle pan Vladimir Nabokov

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Feu pâle

Vladimir Nabokov

Nb. de pages: 342

Format: Pdf, ePub, MOBI, FB2

ISBN: 9782070383634

Editeur: Gallimard

Date de parution: 2007

 

 

 

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Overview

Cette oeuvre - faut-il dire centaure ou sirène -, oeuvre mi-prose, mi-poème, est une création d'une beauté, d'une originalité parfaites : offrant tout à la fois la symétrie, la singularité et la vérité morale. On y peut voir un objet de curiosité. Ce n'en est pas moins une des plus grandes oeuvres d'art de ce temps : le roman moderne que nous croyions mort et qui n'était qu'endormi.
Supplementary Data from Sequencing of the variable region of rpsB to discriminate between Streptococcus pneumoniae and other streptococcal species.
Creators: name: Wyllie, Anne L.
name: Pannekoek, Yvonne
name: Bovenkerk, Sandra
name: Gastelaars, Jody Van Engelsdorp
name: Ferwerda, Bart
name: Beek, Diederik Van De
name: Sanders, Elisabeth A. M.
name: Trzciński, Krzysztof
name: Ende, Arie Van Der
Publisher: name: The Royal Society
Year: 2017
Subjects: Molecular Biology

description: Results from in silico DNA-DNA hybridisation
Strain modification of epitaxial perovskite oxide thin films using structural transitions of ferroelectric BaTiO3 substrate
Creators: name: Tsui, F.
name: Eom, C. B.
name: Lee, M. K.
name: Nath, T. K.
name: Smoak, M. C.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2000

description: Effects of induced biaxial strain on the electrical transport and magnetic properties of epitaxialthin films of SrRuO 3 and La 0.67 Sr 0.33 MnO 3 by structural transitions of ferroelectric BaTiO 3 substrates have been studied. Large jumps of electrical resistivity (∼5% in SrRuO 3 and ∼12% in La 0.67 Sr 0.33 MnO 3 ) and low field magnetization (∼70% in La 0.67 Sr 0.33 MnO 3 ) have been observed in the films at the structural transition temperatures of BaTiO 3 substrate. The hysteretic jumps are reproducible through many thermal cycles, and they can be attributed to strain effects induced by the substrate. The use of phase transitions of ferroelectric substrates to manipulate lattice strain of epitaxialthin film heterostructures can be a useful way to modify the properties of perovskite oxides.
Supplementary Data from Sequencing of the variable region of rpsB to discriminate between Streptococcus pneumoniae and other streptococcal species
Creators: name: Wyllie, Anne L.
name: Pannekoek, Yvonne
name: Bovenkerk, Sandra
name: Gastelaars, Jody Van Engelsdorp
name: Ferwerda, Bart
name: Beek, Diederik Van De
name: Sanders, Elisabeth A. M.
name: Trzciński, Krzysztof
name: Ende, Arie Van Der
Publisher: name: The Royal Society
Year: 2017
Subjects: Molecular Biology

description: Results from in silico DNA-DNA hybridisation
Gravitational Waves from Domain Walls in Pulsar Timing Array Datasets
Creators: name: Ferreira, Ricardo Z.
name: Notari, Alessio
name: Pujolas, Oriol
name: Rompineve, Fabrizio
Publisher: name: arXiv
Year: 2022
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present a model-independent search for the gravitational wave background from cosmic domain walls (DWs) in the NANOGrav 12.5 years dataset and International PTA Data Release 2. DWs that annihilate at temperatures $\sim 20-50~\text{MeV}$ with tensions $\sim (40-100~\text{TeV})^3$ provide as good a fit to both datasets as the astrophysical background from supermassive black hole mergers. DWs may decay into the Standard Model (SM) or a dark sector. In the latter case we predict an abundance $ΔN_{\text{eff}}$ of dark radiation well within the reach of upcoming CMB surveys. Complementary signatures at colliders and laboratories can arise if couplings to the SM are present. As an example, we discuss heavy axion scenarios, where DW annihilation may interestingly be induced by QCD confinement.
description: 8+12 pages, 8 figures. v2: typos corrected, minor additions. Version to appear on JCAP
Download PDF A voté
Creators: name: Tucker
Publisher: name: Zenodo
Year: 2024

description: A voté pan Isaac Asimov

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A voté

Isaac Asimov

Nb. de pages: 52

Format: Pdf, ePub, MOBI, FB2

ISBN: 9782369352297

Editeur: Le Passager Clandestin

Date de parution: 2020

 

 

 

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Overview

En 1955, Isaac Asimov imagine le nec plus ultra de la démocratie sondagière. En 2008, les Etats-Unis s'apprêtent à voter pour leur prochain président. Dans l'Etat de l'Indiana, dans le comté de Monroe, dans la petite ville de Bloomington, la rumeur enfle et semble se confirmer peu à peu... Et si c'était ici qu'allait se décider le résultat du scrutin ? Depuis que le pays s'est converti à la "démocratie électronique" , le puissant ordinateur Multivac sélectionne LE citoyen qui décidera du nom du prochain leader du monde libre. L'omnisciente machine est en effet capable d'analyser ses réponses à un questionnaire qu'elle a elle-même savamment établi pour déterminer le résultat de l'élection... qui, désormais, n'a plus de raison d'être. A l'heure où les systèmes démocratiques de la planète vacillent sur leur base, il est intéressant de se rappeler le point de vue d'Isaac Asimov sur les dérives d'une société politique ivre de technologie, d'efficacité et de rendement.
Synthesis and properties of epitaxial thin films of c -axis oriented metastable four-layered hexagonal BaRuO3
Creators: name: Eom, C. B.
name: Lee, M. K.
name: Tsui, F.
name: Tian, W.
name: Krajewski, J. J.
name: Pan, X. Q.
name: Smoak, M. C.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2000

description: We have grown epitaxial thin films of c-axis oriented metastable four-layered hexagonal BaRuO3 on a (111) SrTiO3 substrate by 90° off-axis sputtering techniques. X-ray diffraction and transmission electron microscopy reveal that the films are single domains of c-axis four-layered hexagonal structures with an in-plane epitaxial arrangement of BaRuO3 [2110]||SrTiO3[110]. Surfaces with smooth terraces having a step height of a half unit cell (~4.7 Å) have been observed by scanning tunneling microscopy. The in-plane electrical resistivity of the films is metallic, with a room temperature value of 810 muOmega cm and slightly curved temperature dependence. Their magnetic susceptibility is Pauli paramagnetic. The metastable layered metallic oxide can be used for understanding new solid-state phenomena and device applications.
Radial Toeplitz operators on the Fock space and square-root-slowly oscillating sequences
Creators: name: Esmeral, Kevin
name: Maximenko, Egor A.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Operator Algebras (math.OA)
subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: Primary 47B35, Secondary 30H20, 41A35

description: In this paper we show that the C*-algebra generated by radial Toeplitz operators with $L_{\infty}$-symbols acting on the Fock space is isometrically isomorphic to the C*-algebra of bounded sequences uniformly continuous with respect to the square-root-metric $ρ(j,k)=|\sqrt{\vphantom{jk}j}-\sqrt{\vphantom{jk}k}\,|$. More precisely, we prove that the sequences of eigenvalues of radial Toeplitz operators form a dense subset of the latter C*-algebra of sequences.
description: 19 pages, 2 figures
The crossover from the Macroscopic Fluctuation Theory to the Kardar-Parisi-Zhang equation controls the large deviations beyond Einstein's diffusion
Creators: name: Krajenbrink, Alexandre
name: Doussal, Pierre Le
Publisher: name: arXiv
Year: 2022
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Mathematical Physics (math-ph)
subject: Probability (math.PR)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We study the crossover from the macroscopic fluctuation theory (MFT) which describes 1D stochastic diffusive systems at late times, to the weak noise theory (WNT) which describes the Kardar-Parisi-Zhang (KPZ) equation at early times. We focus on the example of the diffusion in a time-dependent random field, observed in an atypical direction which induces an asymmetry. The crossover is described by a non-linear system which interpolates between the derivative and the standard non-linear Schrodinger equations in imaginary time. We solve this system using the inverse scattering method for mixed-time boundary conditions introduced by us to solve the WNT. We obtain the rate function which describes the large deviations of the sample-to-sample fluctuations of the cumulative distribution of the tracer position. It exhibits a crossover as the asymmetry is varied, recovering both MFT and KPZ limits. We sketch how it is consistent with extracting the asymptotics of a Fredholm determinant formula, recently derived for sticky Brownian motions. The crossover mechanism studied here should generalize to a larger class of models described by the MFT. Our results apply to study extremal diffusion beyond Einstein's theory.
description: 46 pages
Genetic networks: data model and visualisations
Creators: name: Spadini, Elena
name: Christen, Alessio
name: Pallacci, Valentina
name: Elli, Tommaso
name: Benedetti, Andrea
name: Maggetti, Daniel
name: Mauri, Michele
name: Pétermann, Stéphane
Publisher: name: Zenodo
Year: 2023
Subjects: Genetic criticism
Data Visualization
Ontology

description: In this paper, we introduce the concept of genetic networks to study the relationships between manuscripts and publications in genetic editing. We present a data model and its formalisation in an OWL2 ontology, as well as the corresponding data visualisations in the form of sky maps. Our case study is the literary œuvre of the Swiss writer and photographer Gustave Roud (1897-1976). We conclude with some remarks about the project workflow and the integration of data and visual modelling.