cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Isometric embedding of Busemann surfaces into $L_1$
Creators: name: Chalopin, Jérémie
name: Chepoi, Victor
name: Naves, Guyslain
Publisher: name: arXiv
Year: 2013
Subjects: subject: Computational Geometry (cs.CG)
subject: Discrete Mathematics (cs.DM)
subject: Metric Geometry (math.MG)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics
subject: I.3.5; G.2.1

description: In this paper, we prove that any non-positively curved 2-dimensional surface (alias, Busemann surface) is isometrically embeddable into $L_1$. As a corollary, we obtain that all planar graphs which are 1-skeletons of planar non-positively curved complexes with regular Euclidean polygons as cells are $L_1$-embeddable with distortion at most $2+π/2<4$. Our results significantly improve and simplify the results of the recent paper {\it A. Sidiropoulos, Non-positive curvature, and the planar embedding conjecture, FOCS 2013.}}
BrainSABER v0.99.5: transcriptomic similarity assessment toolkit and web application for the BrainSpan developmental dataset analysis
Creators: name: Hoffman, Mariah
name: Radichev, Evgeni
name: Minette, Carrie
name: Gnimpieba, Etienne
Publisher: name: F1000 Research Limited
Year: 2020

description: As part of their Brain Atlas project, the Allen Brain Institute has sampled the transcriptome of the developing human brain across ages ranging from 8 weeks post conception through 40 years of age for sixteen cortical and subcortical regions. The BrainSABER package is designed to provide a self-validating container for user transcriptomic data, to compare the transcriptomic similarity between the provided data and the BrainSpan dataset across developmental ages and brain regions, and to visualize the result of these comparisons. The accompanying Shiny application is designed to facilitate use of the BrainSABER toolkit and calculates the transcriptomic similarity across the 5000 genes with the highest stabilized variance across the BrainSpan dataset. Similarity metrics implemented in the BrainSABER command-line package are Euclidean and cosine distance, while the Shiny application has cosine distance, Kendall’s Tau, and Spearman’s Rho, as well as significance estimates for the correlation metrics. Results are visualized for each dataset as dynamic heatmaps in both command-line and Shiny implementations of the toolkit. Downloadable static heatmaps comparing correlation scores across datasets are also displayed in the Shiny application. The command-line BrainSABER package is published in the developmental version of Bioconductor (DOI: 10.18129/B9.bioc.BrainSABER), and the Shiny application is available in the developmental “dev” branch of the bicbioeng/BrainSABER package on GitHub as part of the ongoing developments to the published package. BrainSABER and shinyBrainSABER are designed to provide an approachable toolkit to assess and visualize similarity between user data and the Allen Brain Institute BrainSpan dataset.
Quasars and their emission lines as cosmological probes
Creators: name: Marziani, Paola
name: Sulentic, Jack W.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Quasars are the most luminous sources in the Universe. They are currently observed out to redshift z ~ 7 when the Universe was less than one tenth of its present age. Since their discovery 50 years ago astronomers have dreamed of using them as standard candles. Unfortunately quasars cover a very large range (8 dex) of luminosity making them far from standard. We briefly review several methods that can potentially exploit quasars properties and allow us to obtain useful constraints on principal cosmological parameters. Using our 4D Eigenvector 1 formalism we have found a way to effectively isolate quasars radiating near the Eddington limit. If the Eddington ratio is known, under several assumptions it is possible to derive distance independent luminosities. We discuss and the main statistical and systematic errors involved, and whether these "standard Eddington candles" can be actually used to constrain cosmological models.
description: Accepted for publication in Advances in Space Research. Invited talk presented at the 9th Serbian Conference on Spectral Line Shapes in Astrophysics (SCSLSA) held in Banja Koviljaca, Serbia, on May 13-17, 2013
On time-local generators of quantum evolution
Creators: name: Chruściński, Dariusz
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present a basic introduction to the dynamics of open quantum systems based on local-in-time master equations. We characterize the properties of time-local generators giving rise to legitimate completely positive trace preserving quantum evolutions. The analysis of Markovian and non-Markovian quantum dynamics is presented as well. The whole discussion is illustrated by the family of many instructive examples.
description: Lecture presented at the school "Open Quantum Systems", Torun, June 20-24, 2012 (30 pages)
Deep-Learning-based Change Detection with Spaceborne Hyperspectral PRISMA data
Creators: name: Amieva, J. F.
name: Austoni, A.
name: Brovelli, M. A.
name: Ansalone, L.
name: Naylor, P.
name: Serva, F.
name: Saux, B. Le
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Change detection (CD) methods have been applied to optical data for decades, while the use of hyperspectral data with a fine spectral resolution has been rarely explored. CD is applied in several sectors, such as environmental monitoring and disaster management. Thanks to the PRecursore IperSpettrale della Missione operativA (PRISMA), hyperspectral-from-space CD is now possible. In this work, we apply standard and deep-learning (DL) CD methods to different targets, from natural to urban areas. We propose a pipeline starting from coregistration, followed by CD with a full-spectrum algorithm and by a DL network developed for optical data. We find that changes in vegetation and built environments are well captured. The spectral information is valuable to identify subtle changes and the DL methods are less affected by noise compared to the statistical method, but atmospheric effects and the lack of reliable ground truth represent a major challenge to hyperspectral CD.
description: Accepted at Big Data from Space 2023 (BiDS); 4 pages, 4 figures
"Er Euch retten!?"; [1849]
Creators: name: (:Unav)
Publisher: name: Universitätsbibliothek der Ludwig-Maximilians-Universität München
Year: 2018

description: Flugblatt mit Karikatur des Pfarrers Max Stephan Stigelmayr in einem Wirtshaus mit Zigarre und und einem Bierseidel
Scattered Light Correction of HAYABUSA/AMICA Data and Quantitative Spectral Comparisons of Itokawa
Creators: name: Ishiguro, Masateru
Publisher: name: arXiv
Year: 2014
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The Hayabusa spacecraft rendezvoused with its target asteroid 25143 Itokawa in 2005 and brought an asteroidal sample back to the Earth in 2010. The onboard camera, AMICA, took more than 1400 images of Itokawa during the rendezvous phase. It was reported that the AMICA images were severely contaminated by light scatter inside the optics. The effect made it difficult to produce the color maps at longer wavelengths (>800 nm). In this paper, we demonstrate a method to subtract the scattered light by investigating the dim halos of Itokawa and the Moon taken by AMICA during the inflight operation. As the result, we found that the overall data reduction scheme including the scattered light correction enables to recognize ~3% regional differences in the relative reflectance spectra of Itokawa. We confirmed that the color variation in Itokawa was largely attributed to space weathering.
description: 15 pages, 10 figures, 4 tables, Publications of the Astronomical Society of Japan (accepted)
Study and security analysis of the Spanish identity card
Creators: name: Correa-Marichal, Javier
name: Caballero-Gil, Pino
name: Rosa-Remedios, Carlos
name: Sarwat-Shaker, Rames
Publisher: name: arXiv
Year: 2022
Subjects: subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: The National Identity Document is a fundamental piece of documentation for the identification of citizens throughout the world. That is precisely the case of the DNI (Documento Nacional de Identidad) of Spain. Its importance has been enhanced in recent years with the addition of a chip for the authentication of users within telematic administrative services. Thus, the document has since been called: electronic DNI or simply DNIe. Sensitive user information is stored in that integrated circuit, such as personal and biometric data, along with signature and authentication certificates. Some of the functionalities of the DNIe in its current version at the time of writing this work have been implemented for years in the DNI 3.0 version launched in 2015, and therefore have already been extensively studied. This work provides a theoretical and practical compilation study of some of the security mechanisms included in the current DNIe and in some of the applications that require its use. It has been carried out using only mobile devices and generic card readers, without having any type of privileged access to hardware, software or specific documentation for the interception of packets between the DNIe and the destination application. In other words, it is an exploratory analysis carried out with the intention of confirming with basic tools the level of robustness of this very important security token.
Super-resolved rainfall prediction with physics-aware deep learning
Creators: name: Moran, S.
name: Demir, B.
name: Serva, F.
name: Saux, B. Le
Publisher: name: arXiv
Year: 2023
Subjects: subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: FOS: Physical sciences

description: Rainfall prediction at the kilometre-scale up to a few hours in the future is key for planning and safety. But it is challenging given the complex influence of climate change on cloud processes and the limited skill of weather models at this scale. Following the set-up proposed by the \emph{weather4cast} challenge of NeurIPS, we build a two-step deep-learning solution for predicting rainfall occurrence at ground radar high spatial resolution starting from coarser resolution weather satellite images. Our approach is designed to predict future satellite images with a physics-aware ConvLSTM network, which is then converted into precipitation maps through a U-Net. We find that our two-step pipeline outperforms the baseline model and we quantify the benefits of including physical information. We find that local-scale rainfall predictions with good accuracy starting from satellite radiances can be obtained for up to 4 hours in the future.
description: Accepted at Big Data from Space 2023 (BiDS); 4 pages, 3 figures
Constraints on Planet Occurrence around Nearby Mid-to-Late M Dwarfs from the MEarth Project
Creators: name: Berta, Zachory K.
name: Irwin, Jonathan
name: Charbonneau, David
Publisher: name: arXiv
Year: 2013
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The MEarth Project is a ground-based photometric survey to find planets transiting the closest and smallest main-sequence stars. In its first four years, MEarth discovered one transiting exoplanet, the 2.7 Earth radius planet GJ1214b. Here, we answer an outstanding question: in light of the bounty of small planets transiting small stars uncovered by the Kepler mission, should MEarth have found more than just one planet so far? We estimate MEarth's ensemble sensitivity to exoplanets by performing end-to-end simulations of 1.25 million observations of 988 nearby mid-to-late M dwarfs, gathered by MEarth between October 2008 and June 2012. For 2-4 Earth radius planets, we compare this sensitivity to results from Kepler and find that MEarth should have found planets at a rate of 0.05 - 0.36 planets/year in its first four years. As part of this analysis, we provide new analytic fits to the Kepler early M dwarf planet occurrence distribution. When extrapolating between Kepler's early M dwarfs and MEarth's mid-to-late M dwarfs, we find that assuming the planet occurrence distribution stays fixed with respect to planetary equilibrium temperature provides a good match to our detection of a planet with GJ1214b's observed properties. For larger planets, we find that the warm (600-700K), Neptune-sized (4 Earth radius) exoplanets that transit early M dwarfs like Gl436 and GJ3470 occur at a rate of <0.15/star (at 95% confidence) around MEarth's later M dwarf targets. We describe a strategy with which MEarth can increase its expected planet yield by 2.5X without new telescopes, by shifting its sensitivity toward the smaller and cooler exoplanets that Kepler has demonstrated to be abundant.
description: 14 pages, 8 figures, accepted for publication in the Astrophysical Journal. MEarth public light curves can be downloaded from http://www.cfa.harvard.edu/MEarth/
Drowsiness detection in drivers with a smartwatch
Creators: name: Díaz-Santos, Sonia
name: Caballero-Gil, Pino
Publisher: name: arXiv
Year: 2022
Subjects: subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: The main objective of this work is to detect early if a driver shows symptoms of sleepiness that indicate that he/she is falling asleep and, in that case, generate an alert to wake him/her up. To solve this problem, an application has been designed that collects various parameters, through a smartwatch while driving. First, the application detects the driving action. Then, it collects information about the most significant physiological variables of a person while driving. On the other hand, given the high level of sensitivity of the data managed in the designed application, in this work special attention has been paid to the security of the implementation. The proposed solution improves road safety, reducing the number of accidents caused by drowsiness while driving.
Measurement of the Cotton Mouton effect of water vapour
Creators: name: Della Valle, F.
name: Ejlli, A.
name: Gastaldi, U.
name: Messineo, G.
name: Milotti, E.
name: Pengo, R.
name: Piemontese, L.
name: Ruoso, G.
name: Zavattini, G.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: In this paper we report on a measurement of the Cotton Mouton effect of water vapour. Measurement performed at room temperature ($T=301$ K) with a wavelength of 1064 nm gave the value $Δn_u = (6.67 \pm 0.45) \cdot 10^{-15}$ for the unit magnetic birefringence (1 T magnetic field and atmospheric pressure).
redMaPPer III: A Detailed Comparison of the Planck 2013 and SDSS DR8 RedMaPPer Cluster Catalogs
Creators: name: Rozo, Eduardo
name: Rykoff, Eli S.
name: Bartlett, James G.
name: Melin, Jean B.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We compare the Planck Sunyaev-Zeldovich (SZ) cluster sample (PSZ1) to the Sloan Digital Sky Survey (SDSS) redMaPPer catalog, finding that all Planck clusters within the redMaPPer mask and within the redshift range probed by redMaPPer are contained in the redMaPPer cluster catalog. These common clusters define a tight scaling relation in the richness-SZ mass ($λ$--$M_{SZ}$) plane, with an intrinsic scatter in richness of $σ_{λ|M_{SZ}} = 0.266 \pm 0.017$. The corresponding intrinsic scatter in true cluster halo mass at fixed richness is $\approx 21\%$. The regularity of this scaling relation is used to identify failures in both the redMaPPer and Planck cluster catalogs. Of the 245 galaxy clusters in common, we identify three failures in redMaPPer and 36 failures in the PSZ1. Of these, at least 12 are due to clusters whose optical counterpart was correctly identified in the PSZ1, but where the quoted redshift for the optical counterpart in the external data base used in the PSZ1 was incorrect. The failure rates for redMaPPer and the PSZ1 are $1.2\%$ and $14.7\%$ respectively, or 9.8% in the PSZ1 after subtracting the external data base errors. We have further identified 5 PSZ1 sources that suffer from projection effects (multiple rich systems along the line-of-sight of the SZ detection) and 17 new high redshift ($z\gtrsim 0.6$) cluster candidates of varying degrees of confidence. Should all of the high-redshift cluster candidates identified here be confirmed, we will have tripled the number of high redshift Planck clusters in the SDSS region. Our results highlight the power of multi-wavelength observations to identify and characterize systematic errors in galaxy cluster data sets, and clearly establish photometric data both as a robust cluster finding method, and as an important part of defining clean galaxy cluster samples.
description: comments welcome
Freeform high-speed large-amplitude deformable Piezo Mirrors
Creators: name: Wapler, Matthias C
name: Brunne, Jens
name: Wallrabe, Ulrike
Publisher: name: arXiv
Year: 2013
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We present a new type of tunable mirror with sharply-featured freeform displacement profiles, large displacements of several 100μm and high operating frequencies close to the kHz range at 15mm diameter. The actuation principle is based on a recently explored "topological" displacement mode of piezo sheets. The prototypes presented here include a rotationally symmetric axicon, a hyperbolic sech-icon and a non-symmetric pyram-icon and are scalable to smaller dimensions. The fabrication process is economic and cleanroom-free, and the optical quality is sufficient to demonstrate the diffraction patterns of the optical elements.
Against the No-Go Philosophy of Quantum Mechanics
Creators: name: Laudisa, Federico
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In the area of the foundations of quantum mechanics a true industry appears to have developed in the last decades, with the aim of proving as many results as possible concerning what there cannot be in the quantum realm. In principle, the significance of proving no-go results should consist in clarifying the fundamental structure of the theory, by pointing out a class of basic constraints that the theory itself is supposed to satisfy. In the present paper I will discuss some more recent no-go claims and I will argue against the deep significance of these results, with a two-fold strategy. First, I will consider three results concerning respectively local realism, quantum covariance and predictive power in quantum mechanics, and I will try to show how controversial the main conditions of the negative theorem turn out to be, something that strongly undermines the general relevance of these theorems. Second, I will try to discuss what I take to be a common feature of these theoretical enterprises, namely that of aiming at establishing negative results for quantum mechanics in absence of a deeper understanding of the overall ontological content and structure of the theory. I will argue that the only way toward such an understanding may be to cast in advance the problems in a clear and well-defined interpretational framework, which in my view means primarily to specify the ontology that quantum theory is supposed to be about, and after to wonder whether problems that seemed worth pursuing still are so in the framework.
description: arXiv admin note: text overlap with arXiv:0811.2862
On Shor's r-Algorithm for Problems with Constraints
Creators: name: Norkin, Vladimir
name: Kozyriev, Anton
Publisher: name: arXiv
Year: 2023
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics
subject: 90C26

description: Shor's r-algorithm (Shor, Zhurbenko (1971), Shor (1979)) with space stretching in the direction of difference of two adjacent subgradients is a competitive method of nonsmooth optimization. However, the original r-algorithm is designed to minimize convex ravine functions without constraints. The standard technique for solving constraint problems with this algorithm is to use exact nonsmooth penalty functions (Eremin (1967), Zangwill (1967)). At the same time, it is necessary to choose the (sufficiently large) penalty coefficient in this method. In Norkin (2020, 2022) and Galvan et al. (2021), the so-called projective exact penalty function method is proposed, which does not formally require an exact definition of the penalty coefficient. In this paper, a nonsmooth optimization problem with convex constraints is first transformed into a constraintfree problem by the projective penalty function method, and then the r-algorithm is applied to solve the transformed problem. We present the results of testing this approach on problems with linear constraints using a program implemented in Matlab.
10 Inventions on special type of keyboards -A study based on US patents
Creators: name: Mishra, Umakant
Publisher: name: arXiv
Year: 2013
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: A keyboard is the most important input device for a computer. It is used with various types and sizes of computer. But the same standard keyboard will not work efficiently with different types of computers at different environments. There is a need to develop special keyboards to meet special requirements. This article illustrates 10 inventions on special types of keyboards. The special keyboard are used in special computers or computers used for special purposes. A special keyboard is to be understood as a keyboard having features beyond a normal keyboard. The example of special keyboards are, a children's keyboard which may be colorful and attractive, a keyboard in public place need to be more robust, the keyboard in a palmtop may have less number of keys, the keyboard for a game station may have special attachments, a multimedia keyboard may have CD ROM and speakers, a wireless keyboard may have remote control features, a touch sensitive keyboard may have sensors on the keys and so on.
description: Published in TRIZsite Journal, May 2005, also available in http://papers.ssrn.com/abstract=932275
A meta-analysis of distance measurements to M87
Creators: name: Ramakrishnan, Gunasekar
name: Desai, Shantanu
Publisher: name: arXiv
Year: 2023
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We obtain the median, arithmetic mean, and the weighted mean-based central estimates for the distance to M87 using all the measurements collated in De Grijs et al (2020). We then reconstruct the error distribution for the residuals of the combined measurements and also splitting them based on the tracers used. We then checked for consistency with a Gaussian distribution and other symmetric distributions such as Cauchy, Laplacian, and Students-$t$ distributions. We find that when we analyze the combined data, the weighted mean-based estimates show a poor agreement with the Gaussian distribution, indicating that there are unaccounted systematic errors in some of the measurements. Therefore, the median-based estimate for the distance to M87 would be the most robust. This median-based distance modulus to M87 is given by $31.08 \pm 0.09$ mag and $31.07 \pm 0.09$ mag, with and without considering measurements categorized as "averages", respectively. This estimate agrees with the corresponding value obtained in DeGrijs et al (2020) to within $1σ$.
description: 16 pages, 1 figure
Predictive Green Wireless Access: Exploiting Mobility and Application Information
Creators: name: Abou-zeid, Hatem
name: Hassanein, Hossam S.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: The ever increasing mobile data traffic and dense deployment of wireless networks have made energy efficient radio access imperative. As networks are designed to satisfy peak user demands, radio access energy can be reduced in a number of ways at times of lower demand. This includes putting base stations (BSs) to intermittent short sleep modes during low load, as well as adaptively powering down select BSs completely where demand is low for prolonged time periods. In order to fully exploit such energy conserving mechanisms, networks should be aware of the user temporal and spatial traffic demands. To this end, this article investigates the potential of utilizing predictions of user location and application information as a means to energy saving. We discuss the development of a predictive green wireless access (PreGWA) framework and identify its key functional entities and their interaction. To demonstrate the potential energy savings we then provide a case study on stored video streaming and illustrate how exploiting predictions can minimize BS resource consumption within a single cell, and across a network of cells. Finally, to emphasize the practical potential of PreGWA, we present a distributed heuristic that reduces resource consumption significantly without requiring considerable information or signaling overhead.
On three theorems of Folsom, Ono and Rhoades
Creators: name: Zudilin, Wadim
Publisher: name: arXiv
Year: 2013
Subjects: subject: Number Theory (math.NT)
subject: Classical Analysis and ODEs (math.CA)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: Primary 11F03, Secondary 11P84, 33D15

description: In his deathbed letter to Hardy, Ramanujan gave a vague definition of a mock modular function: at each root of unity its asymptotics matches the one of a modular form, though a choice of the modular function depends on the root of unity. Recently Folsom, Ono and Rhoades have proved an elegant result about the match for a general family related to Dyson's rank (mock theta) function and the Andrews--Garvan crank (modular) function---the match with explicit formulae for implied $O(1)$ constants. In this note we give another elementary proof of Ramanujan's original claim and outline some heuristics which may be useful for obtaining a new proof of the general Folsom--Ono--Rhoades theorem.
description: 6 pages
A. Aber mit den langen Röcken können Sie ja gar nicht vorwärts gehen. Russe. Ich werd' Ihnen zeigen, wie wir andere zum Laufen bringen.; [1848]
Creators: name: Zampis, Anton
Publisher: name: Universitätsbibliothek der Ludwig-Maximilians-Universität München
Year: 2018

description: Mit Monogramm: AZ
AdaSub: Stochastic Optimization Using Second-Order Information in Low-Dimensional Subspaces
Creators: name: da Mata, João Victor Galvão
name: Andersen, Martin S.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Optimization and Control (math.OC)
subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: We introduce AdaSub, a stochastic optimization algorithm that computes a search direction based on second-order information in a low-dimensional subspace that is defined adaptively based on available current and past information. Compared to first-order methods, second-order methods exhibit better convergence characteristics, but the need to compute the Hessian matrix at each iteration results in excessive computational expenses, making them impractical. To address this issue, our approach enables the management of computational expenses and algorithm efficiency by enabling the selection of the subspace dimension for the search. Our code is freely available on GitHub, and our preliminary numerical results demonstrate that AdaSub surpasses popular stochastic optimizers in terms of time and number of iterations required to reach a given accuracy.
description: Published in: 2023 IEEE 10th International Conference on Data Science and Advanced Analytics (DSAA)
Current Services In Cloud Computing: A Survey
Creators: name: Mosbah, Mohamed Magdy
name: Soliman, Hany
name: El-Nasr, Mohamad Abou
Publisher: name: arXiv
Year: 2013
Subjects: subject: Other Computer Science (cs.OH)
subject: FOS: Computer and information sciences

description: Due to the fast development of the Cloud Computing technologies, the rapid increase of cloud services are became very remarkable. The fact of integration of these services with many of the modern enterprises cannot be ignored. Microsoft, Google, Amazon, SalesForce.com and the other leading IT companies are entered the field of developing these services. This paper presents a comprehensive survey of current cloud services, which are divided into eleven categories. Also the most famous providers for these services are listed. Finally, the Deployment Models of Cloud Computing are mentioned and briefly discussed.
description: 8 pages
A Gapless MoS$_2$ Allotrope Possessing Both Massless Dirac and Heavy Fermions
Creators: name: Li, Weifeng
name: Guo, Meng
name: Zhang, Gang
name: Zhang, Yong-Wei
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: MoS$_2$, a member of transition metal dichalcogenides (TMDs), recently emerged as one of the fastest growing two-dimensional materials due to its fascinating mechanical, thermal, electronic and optical properties. Unlike graphene which possesses massless Dirac fermions with ultra-high electron mobility, monolayer MoS$_2$ is a direct band gap semiconductor. An interesting question arises: Can monolayer MoS$_2$ also possess massless Dirac fermions with ultra-high electron mobility? Here, using first-principles calculations, we show that a monolayer MoS$_2$ allotrope, which consists of repeated square-octagon rings (abbreviated as so-MoS$_2$ to distinguish from the normal hexagonal lattice, h-MoS$_2$) possesses both massless Dirac fermions and heavy fermions. Distinct from the $p$-orbital Dirac fermions of graphene, the Dirac fermions of so-MoS$_2$ are $d$-electrons and possess Fermi velocity comparable to that of graphene. The Dirac cone structure in so-MoS$_2$ demonstrated here greatly enriches our understanding on the physical properties of TMDs and opens up new possibilities for developing novel electronic/spintronic devices.
description: 9 pages, 4 figures
title: Regensburg "Zur Erinnerung des 6. August" das dankbare Vaterland dem freisinnigsten Manne.; [1848]
title: Anm: Dieses zwar schon im Sinken begriffene Standbild in Thon, (als das dem Ganzen entsprechendste Material) ausgeführt
titleType: Subtitle
Creators: name: (:Unav)
Publisher: name: Universitätsbibliothek der Ludwig-Maximilians-Universität München
Year: 2018

description: Flugblatt mit Karikatur des bayerischen Innenministers Gottlieb Thon-Dittmer bis 1848 Bürgermeister von Regenburg
Near-field heat transfer between gold nanoparticle arrays
Creators: name: Phan, Anh D.
name: Phan, The-Long
name: Woods, Lilia M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The radiative heat transfer between gold nanoparticle layers is presented using the coupled dipole method. Gold nanoparticles are modelled as effective electric and magnetic dipoles interacting via electromagnetic fluctuations. The effect of higher-order multipoles is implemented in the expression of electric polarizability to calculate the interactions at short distances. Our findings show that the near-field radiation reduces as the radius of the nanoparticles is increased. Also, the magnetic dipole contribution to the heat exchange becomes more important for larger particles. When one layer is displayed in parallel with respect to the other layer, the near-field heat transfer exhibits oscillatory-like features due to the influence of the individual nanostructures. Further details about the effect of the nanoparticles size are also discussed.
description: 5 pages,5 figures; Under review 2013
Focusing Mirror with Tunable Eccentricity
Creators: name: Stürmer, Moritz
name: Wapler, Matthias C.
name: Brunne, Jens
name: Wallrabe, Ulrike
Publisher: name: arXiv
Year: 2013
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We present a new kind of varifocal mirror with independently adjustable curvatures in the major directions. For actuation we use two stacked piezo bending actuators with crossed in-plane polarization. This mirror can be used for example as an off-axis focusing device with tunable focal length and compensation for a variable angle of incidence or for coma correction. We demonstrate the prototype of such a mirror and characterize the mechanical deflection, as well as the focusing capabilities.
Prediction of heart rate response to conclusion of spontaneous breathing trial by fluctuation dissipation theory
Creators: name: Chen, Man
name: Niestemski, Liang Ren
name: Prevost, Robert
name: McRae, Michael
name: Cholleti, Sharath
name: Najarro, Gabriel
name: Buchman, Timothy G.
name: Deem, Michael W.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Tissues and Organs (q-bio.TO)
subject: FOS: Biological sciences

description: The non-equilibrium fluctuation dissipation theorem is applied to predict how critically ill patients respond to treatment, based upon data currently collected by standard hospital monitoring devices. This framework is demonstrated on a common procedure in critical care: the spontaneous breathing trial. It is shown that the responses of groups of similar patients to the spontaneous breathing trial can be predicted by the non-equilibrium fluctuation dissipation approach. This mathematical framework, when fully formed and applied to other clinical interventions, may serve as part of the basis for personalized critical care.
description: 12 pages, 2 figures
The effect of points fattening on Hirzebruch surfaces
Creators: name: Di Rocco, Sandra
name: Lundman, Anders
name: Szemberg, Tomasz
Publisher: name: arXiv
Year: 2013
Subjects: subject: Algebraic Geometry (math.AG)
subject: Commutative Algebra (math.AC)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 14C20 13C05

description: The purpose of this note is to study initial sequences of zero-dimensional subschemes of Hirzebruch surfaces and classify subschemes whose initial sequence has the minimal possible growth.
description: 9 pages
title: Effects of different herbicide treatments on common ragweed on wheat stubble (Hungary)
Creators: name: Kazinczi, Gabriella
name: Máté, Sándor
name: Pál-Fám, Ferenc
name: Kerepesi, Ildikó
Publisher: name: Julius Kühn-Institut
Year: 2016

description: Julius-Kühn-Archiv, Nr. 455 (2016): HALT Ambrosia - final project report and general publication of project findings
Geography and similarity of regional cuisines in China
Creators: name: Zhu, Yu-Xiao
name: Huang, Junming
name: Zhang, Zi-Ke
name: Zhang, Qian-Ming
name: Zhou, Tao
name: Ahn, Yong-Yeol
Publisher: name: arXiv
Year: 2013
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Social and Information Networks (cs.SI)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Food occupies a central position in every culture and it is therefore of great interest to understand the evolution of food culture. The advent of the World Wide Web and online recipe repositories has begun to provide unprecedented opportunities for data-driven, quantitative study of food culture. Here we harness an online database documenting recipes from various Chinese regional cuisines and investigate the similarity of regional cuisines in terms of geography and climate. We found that the geographical proximity, rather than climate proximity is a crucial factor that determines the similarity of regional cuisines. We develop a model of regional cuisine evolution that provides helpful clues to understand the evolution of cuisines and cultures.
description: 13 pages, 11 figures and 2 tables
Relativistic bands in the spectrum of created particles via dynamical Casimir effect
Creators: name: Rego, Andreson L. C.
name: Alves, João Paulo da S.
name: Alves, Danilo T.
name: Farina, C.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present a general analytical approach to investigate relativistic corrections in the dynamical Casimir effect (DCE). Particularly, we discuss the behavior of the additional frequency bands that appear in the spectral distribution of the created particles when the first relativistic corrections are taken into account. We do that in the context of circuit QED, by analyzing the setup used in the first measurement of the DCE, where a system with a time-dependent boundary condition simulates the mechanical motion of a single mirror in 1+1 dimensions. Our method is applicable to a large class of systems with oscillatory time-dependent parameters and can be generalized to higher dimensions and other fields.
description: 11 pages, 4 figures
title: Separate Kingdoms: Academic Advisers’ Perceptions of College Athletes and Athletic Departments
Creators: name: Stokowski, Sarah
name: Rubin, Lisa M.
name: Rode, Cheryl R.
name: Fridley, Alison
name: Shkorupeieva, Sasha
Publisher: name: The Pennsylvania State University Libraries
Year: 2020

description: The Mentor, Volume 22
Zu München an der Isar-Strand Ein heisser blut'ger Kampf enstand. Geschlagen wurde diese Schlacht Achtzen hundert vierzig & 8! "Der Vermittler bringt das Heil Trägt von jeder Art ein Theil; Und wie die Kopfeier er erdacht, War schnell de, Kampf ein End' gemacht."; [1848]
Creators: name: (:Unav)
Publisher: name: Universitätsbibliothek der Ludwig-Maximilians-Universität München
Year: 2018

description: Flugblatt mit zwei Karikaturen zur Revolution 1848 in München
OrthoNets: Orthogonal Channel Attention Networks
Creators: name: Salman, Hadi
name: Parks, Caleb
name: Swan, Matthew
name: Gauch, John
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Designing an effective channel attention mechanism implores one to find a lossy-compression method allowing for optimal feature representation. Despite recent progress in the area, it remains an open problem. FcaNet, the current state-of-the-art channel attention mechanism, attempted to find such an information-rich compression using Discrete Cosine Transforms (DCTs). One drawback of FcaNet is that there is no natural choice of the DCT frequencies. To circumvent this issue, FcaNet experimented on ImageNet to find optimal frequencies. We hypothesize that the choice of frequency plays only a supporting role and the primary driving force for the effectiveness of their attention filters is the orthogonality of the DCT kernels. To test this hypothesis, we construct an attention mechanism using randomly initialized orthogonal filters. Integrating this mechanism into ResNet, we create OrthoNet. We compare OrthoNet to FcaNet (and other attention mechanisms) on Birds, MS-COCO, and Places356 and show superior performance. On the ImageNet dataset, our method competes with or surpasses the current state-of-the-art. Our results imply that an optimal choice of filter is elusive and generalization can be achieved with a sufficiently large number of orthogonal filters. We further investigate other general principles for implementing channel attention, such as its position in the network and channel groupings. Our code is publicly available at https://github.com/hady1011/OrthoNets/
description: IEEE BigData 2023
Thermodynamic and transport properties of single crystalline RCo$_{2}$Ge$_{2}$ (R = Y, La-Nd, Sm-Tm)
Creators: name: Kong, Tai
name: Cunningham, Charles E.
name: Taufour, Valentin
name: Bud'ko, Sergey L.
name: Buffon, Malinda L. C.
name: Lin, Xiao
name: Emmons, Heather
name: Canfield, Paul C.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Single crystals of RCo$_{2}$Ge$_{2}$ (R = Y, La-Nd, Sm-Tm) were grown using a self-flux method and were characterized by room-temperature powder x-ray diffraction; anisotropic, temperature and field dependent magnetization; temperature and field dependent, in-plane resistivity; and specific heat measurements. In this series, the majority of the moment-bearing members order antiferromagnetically; YCo$_{2}$Ge$_{2}$ and LaCo$_{2}$Ge$_{2}$ are non-moment-bearing. Ce is trivalent in CeCo$_{2}$Ge$_{2}$ at high temperatures, and exhibits an enhanced electronic specific heat coefficient due to Kondo effect at low temperatures. In addition, CeCo$_{2}$Ge$_{2}$ shows two low-temperature anomalies in temperature-dependent magnetization and specific heat measurements. Three members (R = Tb-Ho) have multiple phase transitions above 1.8 K. Eu appears to be divalent with total angular momentum L = 0. Both EuCo$_{2}$Ge$_{2}$ and GdCo$_{2}$Ge$_{2}$ manifest essentially isotropic paramagnetic properties consistent with J = S = 7/2. Clear magnetic anisotropy for rare-earth members with finite L was observed, with ErCo$_{2}$Ge$_{2}$ and TmCo$_{2}$Ge$_{2}$ manifesting planar anisotropy and the rest members manifesting axial anisotropy. The experimentally estimated crystal electric field (CEF) parameters B$_{2}^{0}$ were calculated from the anisotropic paramagnetic $θ_{ab}$ and $θ_{c}$ values and follow a trend that agrees well with theoretical predictions. The ordering temperatures, T$_{N}$, as well as the polycrystalline averaged paramagnetic Curie-Weiss temperature, $Θ_{avg}$, for the heavy rare-earth members deviate from the de Gennes scaling, as the magnitude of both are the highest for Tb, which is sometimes seen for extremely axial systems. Except for SmCo$_{2}$Ge$_{2}$, metamagnetic transitions were observed at 1.8 K for all members that ordered antiferromagnetically.
description: 26 pages, 16 figures
A multi-modal approach to continuous material identification through tactile sensing
Creators: name: Eguíluz, Augusto Gómez
name: Rañó, Ignacio
name: Coleman, Sonya A.
name: McGinnity, T. Martin
Publisher: name: arXiv
Year: 2023
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: Tactile sensing has recently been used in robotics for object identification, grasping, and material recognition. Most material recognition approaches use vibration information from a tactile exploration, typically above one second long, to identify the material. This work proposes a tactile multi-modal (vibration and thermal) material identification approach based on recursive Bayesian estimation. Through the frequency response of the vibration induced by the material and thermal features, like an estimate of the thermal power loss of the finger, we show that it is possible to identify materials in less than half a second. Moreover, a comparison between the use of vibration only and multi-modal identification shows that both recognition time and classification errors are reduced by adding thermal information.
description: 6 pages, 3 figures, 2016 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS)
Terahertz metamaterials for linear polarization conversion and anomalous refraction
Creators: name: Grady, Nathaniel K.
name: Heyes, Jane E.
name: Chowdhury, Dibakar Roy
name: Zeng, Yong
name: Reiten, Matthew T.
name: Azad, Abul K.
name: Taylor, Antoinette J.
name: Dalvit, Diego A. R.
name: Chen, Hou-Tong
Publisher: name: arXiv
Year: 2013
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Polarization is one of the basic properties of electromagnetic waves conveying valuable information in signal transmission and sensitive measurements. Conventional methods for advanced polarization control impose demanding requirements on material properties and attain only limited performance. Here, we demonstrate ultrathin, broadband, and highly efficient metamaterial-based terahertz polarization converters that are capable of rotating a linear polarization state into its orthogonal one. Based on these results we create metamaterial structures capable of realizing near-perfect anomalous refraction. Our work opens new opportunities for creating high performance photonic devices and enables emergent metamaterial functionalities for applications in the technologically difficult terahertz frequency regime.
description: Main manuscript 13 pages, including 3 figures. Totally 28 pages when including the supplementary materials
From Visual Explanations to Counterfactual Explanations with Latent Diffusion
Creators: name: Luu, Tung
name: Le, Nam
name: Le, Duc
name: Le, Bac
Publisher: name: arXiv
Year: 2025
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Visual counterfactual explanations are ideal hypothetical images that change the decision-making of the classifier with high confidence toward the desired class while remaining visually plausible and close to the initial image. In this paper, we propose a new approach to tackle two key challenges in recent prominent works: i) determining which specific counterfactual features are crucial for distinguishing the "concept" of the target class from the original class, and ii) supplying valuable explanations for the non-robust classifier without relying on the support of an adversarially robust model. Our method identifies the essential region for modification through algorithms that provide visual explanations, and then our framework generates realistic counterfactual explanations by combining adversarial attacks based on pruning the adversarial gradient of the target classifier and the latent diffusion model. The proposed method outperforms previous state-of-the-art results on various evaluation criteria on ImageNet and CelebA-HQ datasets. In general, our method can be applied to arbitrary classifiers, highlight the strong association between visual and counterfactual explanations, make semantically meaningful changes from the target classifier, and provide observers with subtle counterfactual images.
description: 2025 IEEE/CVF Winter Conference on Applications of Computer Vision (WACV)
Fermion Scattering at a Phase Wave
Creators: name: Lee, Jae-weon
name: Koh, In-guy
Publisher: name: arXiv
Year: 1996
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study fermion reflection at a phase wave which is formed during a bubble collision in a first order phase transition. We calculate the reflection and the transmission coefficients by solving the Dirac equation with the phase wave background. Using the results we analyze the damping and the velocity of the wave.
description: 19 pages. Standard Latex file with 2 tex figures
Ultra-Low-Intensity Magneto-Optical and Mechanical Effects in Metal Nanocolloids
Creators: name: Moocarme, Matthew
name: Dominguez-Juarez, Jorge Luis
name: Vuong, Luat T.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We theoretically and numerically investigate the linear and nonlinear magneto-optical contributions to the refractive index of metal nanospheres. The analysis is in good agreement with the experimental extinction spectra of gold nanocolloid solutions, with threshold magnetic fields less than 1 mT when illuminated with light intensities less than 1 W/cm^2. Plasmonic current loops and vortex power flows provide a new framework for the dynamical interaction between material magnetization, light polarization and nano-surfaces. The photo-induced magneto-optical interaction of non-magnetic metal nanocolloids imparts significant, non-negligible torque forces in nanofluids.
description: 5 pages, 5 figures