cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Analysis of higher spin black holes with spin-4 chemical potential
Creators: name: Beccaria, Matteo
name: Macorini, Guido
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider the $AdS_{3}/CFT_{2}$ duality between certain coset WZW theories at large central charge and Vasiliev 3D higher spin gravity with a single complex field. On the gravity side, we discuss a higher spin black hole solution with chemical potential coupled to the spin-4 charge. We compute the perturbative expansion of the higher spin charges and of the partition function at high order in the chemical potential. The result is obtained with its exact dependence on the parameter $λ$ characterising the symmetry algebra $\mbox{hs}[λ]$. The cases of $λ=0,1$ are successfully compared with a CFT calculation. The special point $λ=\infty$, the Bergshoeff-Blencowe-Stelle limit, is also solved in terms of the exact generating function for the partition function. The thermodynamics of both the spin-4 and the usual spin-3 black holes is studied in order to discuss the $λ$ dependence of the BTZ critical temperature $T_{\rm BTZ}(λ)$. In the spin-3 case, it is shown that $T_{\rm BTZ}(λ)$ converges for large $λ$ to the critical point of the $λ=\infty$ known partition function previously found by the authors. In the spin-4 black hole, the picture is qualitatively similar and $T_{\rm BTZ}(\infty)$ is accurately determined by various numerical methods.
description: 27 pages, 6 figures, one more reference
Design of Innovative Power Converters Applied to More Electrical Aircrafts
Creators: name: Zappulla, Gustavo Sathler
name: Cogo, Bernardo
Publisher: name: Zenodo
Year: 2022
Subjects: More Electrical Aircrafts
Power Electronics
Power Converter
Wide BandGap
SiC

description: - IRT Saint Exupéry has been involved in different projects for aerospace applications, which includes innovative high efficiency and size-reduced power conversion for aircrafts
 - In the frame of Clean Sky 2, the projects HYPNOTIC and IMPERIAL brings the challenge of applies power electronics to the context of More Electrical Aircrafts
 - In this scenario, most advanced wide bandgap technologies are used, bringing their challenges concerning driving, reliability and EMI
Shadow of a Charged Rotating Black Hole in $f(R)$ Gravity
Creators: name: Dastan, Sara
name: Saffari, Reza
name: Soroushfar, Saheb
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study the shadow of a charged rotating black hole in $f(R)$ gravity. This black hole is characterized by mass, $M$, spin, $a$, electric charge, $Q$ and $R_{0}$ which is proportional to cosmological constant. We analyze the image of the black hole's shadow in four types 1) at $r\rightarrow\infty$, 2) at $r\rightarrow r_{o}$, in vacuum, 3) at $r\rightarrow\infty$, 4) at $r\rightarrow r_{o}$, for an observer at the presence of plasma. Moreover, we investigate the effect of spin, charge and modfication of gravity on the shape of shadow. In addition, we use two observables, the radius $R_{s}$ and the distortion parameter $δ_{s}$, characterizing the apparent shape. We show that for all cases, the shadow becomes smaller with increasing electric charge. Also, by increasing the rotation parameters, circular symmetry of the image of black hole's shadow will change. Furthermore, in the presence of plasma, plasma parameter also effects on size of the shadow.
description: 28 pages,6 tables,43 figures
Algorithm for an arbitrary-order cumulant tensor calculation in a sliding window of data streams
Creators: name: Domino, Krzysztof
name: Gawron, Piotr
Publisher: name: arXiv
Year: 2017
Subjects: subject: Data Structures and Algorithms (cs.DS)
subject: Numerical Analysis (math.NA)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: High order cumulant tensors carry information about statistics of non-normally distributed multivariate data. In this work we present a new efficient algorithm for calculation of cumulants of arbitrary order in a sliding window for data streams. We showed that this algorithms enables speedups of cumulants updates compared to current algorithms. This algorithm can be used for processing on-line high-frequency multivariate data and can find applications in, e.g., on-line signal filtering and classification of data streams. To present an application of this algorithm, we propose an estimator of non-Gaussianity of a data stream based on the norms of high-order cumulant tensors. We show how to detect the transition from Gaussian distributed data to non-Gaussian ones in a~data stream. In order to achieve high implementation efficiency of operations on super-symmetric tensors, such as cumulant tensors, we employ the block structure to store and calculate only one hyper-pyramid part of such tensors.
Calliandra surinamensis Benth. -A Promising host for lac insect, Kerria lacca (Kerr) in eastern Uttar Pradesh, India
Creators: name: Faraz Khan
name: Singh, Sanjay
name: Tomar, Anita
Publisher: name: figshare
Year: 2020
Subjects: subject: Botany
subject: Zoology
subject: FOS: Biological sciences
subject: 70501 Agroforestry
subject: FOS: Agriculture, forestry and fisheries

description: Successful lac cultivation depends on efficient and proper use of lac host plants. Lac insects can survive on more than 400 plant species but only about two dozen host plants are utilized for lac production because commercial lac cultivation has not been found economically viable on many plants and systematic lac cultivation has not been attempted on several hosts species in regions not traditionally lac strongholds. The revenue generation opportunities may be enhanced through expansion of lac culture with efficient utilization of available host plants all over the country. With the view investigation was carried out to record natural infestation of lac insect on Calliandra surinamensis and its use as source of brood lac for inoculation on other lac host species in Prayagraj district of eastern Uttar Pradesh, India. The findings reveal that C. surinamensis holds promise for large scale lac cultivation in eastern UP as it supports substantial populations of lac insect in great density indicative of excellent establishment and survival. The study recommends integration of lac culture with agriculture including C. surinamensis diversifying the land use for optimizing productivity.
Symmetry for the duration of entropy-consuming intervals
Creators: name: García-García, Reinaldo
name: Domínguez, Daniel
Publisher: name: arXiv
Year: 2014
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We introduce the violation fraction $\upsilon$ as the cumulative fraction of time that a mesoscopic system spends consuming entropy at a single trajectory in phase space. We show that the fluctuations of this quantity are described in terms of a symmetry relation reminiscent of fluctuation theorems, which involve a function, $Φ$, which can be interpreted as an entropy associated to the fluctuations of the violation fraction. The function $Φ$, when evaluated for arbitrary stochastic realizations of the violation fraction, is odd upon the symmetry transformations which are relevant for the associated stochastic entropy production. This fact leads to a detailed fluctuation theorem for the probability density function of $Φ$. We study the steady-state limit of this symmetry in the paradigmatic case of a colloidal particle dragged by optical tweezers through an aqueous solution. Finally, we briefly discuss on possible applications of our results for the estimation of free-energy differences from single molecule experiments.
description: 11 pages, 4 figures. Last revised. Version accepted for publication in Phys. Rev. E
Cluster decorated recognition elements on DNA origami for surface enhanced Raman spectroscopic detection methods
Creators: name: Agarwal, Saloni
name: Martins, Renata F
name: Bier, Frank F.
Publisher: name: Zenodo
Year: 2022
Subjects: DNA origami
SSbD

description: The project “DeDNAed” intends to develop a novel, innovative biosensing platform whose advantages and benefits are in terms of sensitivity, versatility and being ultrafast by an optical approach. Our platform will be based on the assembly and integration of sensing elements (transducer and bioreceptor) by DNA origami. The DNA origami will serve as a “nano-breadboard” in order to precisely control the position of these elements and thus the sensor architecture at the nanometer scale. This poster, presented at the University of Potsdam Science Day 11 October 2022, presents the structure of the project and the innovative bioanalytical platform specifically.
Rankin-Selberg periods for spherical principal series
Creators: name: Frahm, Jan
name: Su, Feng
Publisher: name: arXiv
Year: 2017
Subjects: subject: Number Theory (math.NT)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: Primary 11F70, Secondary 22E46, 53C35

description: By the unfolding method, Rankin-Selberg L-functions for ${\rm GL}(n)\times{\rm GL}(m)$ can be expressed in terms of period integrals. These period integrals actually define invariant forms on tensor products of the relevant automorphic representations. By the multiplicity-one theorems due to Sun-Zhu and Chen-Sun such invariant forms are unique up to scalar multiples and can therefore be related to invariant forms on equivalent principal series representations. We construct meromorphic families of such invariant forms for spherical principal series representations of ${\rm GL}(n,\mathbb{R})$ and conjecture that their special values at the spherical vectors agree in absolute value with the archimedean local L-factors of the corresponding L-functions. We verify this conjecture in several cases. This work can be viewed as the first of two steps in a technique due to Bernstein-Reznikov for estimating L-functions using their period integral expressions.
description: 25 pages. v4 is the final published version
Learning Asymmetric and Local Features in Multi-Dimensional Data through Wavelets with Recursive Partitioning
Creators: name: Li, Meng
name: Ma, Li
Publisher: name: arXiv
Year: 2017
Subjects: subject: Methodology (stat.ME)
subject: Computation (stat.CO)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: Effective learning of asymmetric and local features in images and other data observed on multi-dimensional grids is a challenging objective critical for a wide range of image processing applications involving biomedical and natural images. It requires methods that are sensitive to local details while fast enough to handle massive numbers of images of ever increasing sizes. We introduce a probabilistic model-based framework that achieves these objectives by incorporating adaptivity into discrete wavelet transforms (DWT) through Bayesian hierarchical modeling, thereby allowing wavelet bases to adapt to the geometric structure of the data while maintaining the high computational scalability of wavelet methods---linear in the sample size (e.g., the resolution of an image). We derive a recursive representation of the Bayesian posterior model which leads to an exact message passing algorithm to complete learning and inference. While our framework is applicable to a range of problems including multi-dimensional signal processing, compression, and structural learning, we illustrate its work and evaluate its performance in the context of image reconstruction using real images from the ImageNet database, two widely used benchmark datasets, and a dataset from retinal optical coherence tomography and compare its performance to state-of-the-art methods based on basis transforms and deep learning.
Time-Energy Costs of Quantum Measurements
Creators: name: Fung, Chi-Hang Fred
name: Chau, H. F.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Time and energy of quantum processes are a tradeoff against each other. We propose to ascribe to any given quantum process a time-energy cost to quantify how much computation it performs. Here, we analyze the time-energy costs for general quantum measurements, along a similar line as our previous work for quantum channels, and prove exact and lower bound formulae for the costs. We use these formulae to evaluate the efficiencies of actual measurement implementations. We find that one implementation for a Bell measurement is optimal in time-energy. We also analyze the time-energy cost for unambiguous state discrimination and find evidence that only a finite time-energy cost is needed to distinguish any number of states.
description: 10 pages, 6 figures
Minimally invasive retrofitting of RC joints with externally applied SMA plate - adaptive design optimisation through probabilistic damage simulation
Creators: name: Molod, Mohammad Amin
name: Barthold, Franz-Joseph
name: Spyridis, Panagiotis
Publisher: name: TU Dortmund
Year: 2023
Subjects: subject: Shape memory alloy
subject: Reinforced concrete
subject: Beam–column joints
subject: Probabilistic damage analysis
subject: Non-linear finite elements
subject: Ansys APDL
subject: MATLAB
subject: 690
subject: 720

description: Beam–column joints are the critical section of many reinforced concrete (RC) structure types in which any failure could lead to the collapse of the entire structure. This paper attempts to employ a superelastic shape memory alloy plate as an innovative and adaptive external strengthening element to rehabilitate existing concrete beam–column joints and enhance the structure’s performance. An experimentally investigated beam–column joint is used as the case study, and it is investigated numerically to validate the effects of an innovative strengthening technique based on shape memory alloys. The results show that the proposed technique could increase the joint’s stiffness and reduce the risk of overall failure. A particular innovation in the proposed method is associated with the novel material itself but also with the fact that the increased potential costs of using special alloys are counteracted by its potential to produce these elements in an optimised industrially produced fastened plate. This fits-all construction product further allows a rapid and minimally invasive strengthening technique. Moreover, to achieve this, the plate is adaptively designed against random critical load combinations through probabilistic damage prediction.
description: Sustainability;Vol. 15. 2023, Issue 4, Artikel-ID 3831
On the tidal origin of hot Jupiter stellar obliquity trends
Creators: name: Dawson, Rebekah
Publisher: name: arXiv
Year: 2014
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: It is debated whether the two hot Jupiter populations --- those on orbits misaligned from their host star's spin axis and those well-aligned --- result from two migration channels or from two tidal realignment regimes. Here I demonstrate that equilibrium tides raised by a planet on its star can account for three observed spin-orbit alignment trends: the aligned orbits of hot Jupiters orbiting cool stars, the planetary mass cut-off for retrograde planets, and the stratification by planet mass of cool host stars' rotation frequencies. The first trend can be caused by strong versus weak magnetic braking (the Kraft break), rather than realignment of the star's convective envelope versus the entire star. The second trend can result from a small effective stellar moment of inertia participating in the tidal realignment in hot stars, enabling massive retrograde planets to partially realign to become prograde. The third trend is attributable to higher mass planets more effectively counteracting braking to spin up their stars. Both hot and cool star require a small effective stellar moment of inertia participating in the tidal realignment, e.g., an outer layer weakly coupled to the interior. I demonstrate via Monte Carlo that this model can match the observed trends and distributions of sky-projected misalignments and stellar rotation frequencies. I discuss implications for inferring hot Jupiter migration mechanisms from obliquities, emphasizing that even hot stars do not constitute a pristine sample.
description: ApJL, in press. Submitted April 10, 2014; accepted June 6, 2014. Plots and results same as previous version but qualitative explanations revised for clarity to use first/second time derivative of misalignment instead of cross/dot product
Semi-supervised rescoring for open modification searching reveals protein modifications during SARS-CoV-2 infection
Creators: name: Adams, Charlotte
name: Arab, Issar
name: Fondrie, William E.
name: Boonen, Kurt
name: Laukens, Kris
name: Bittremieux, Wout
Publisher: name: Zenodo
Year: 2022

description: Poster presentation at the HUPO 2022 World Congress in Cancun, Mexico.
Multivariate cumulants in outlier detection for financial data analysis
Creators: name: Domino, Krzysztof
Publisher: name: arXiv
Year: 2018
Subjects: subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences

description: There are many research papers yielding the financial data models, where returns are tied either to the fundamental analysis or to the individual, often irrational, behaviour of investors. In the second case the bubble followed by the crisis is possible on the market. Such bubble or crisis is reflected by the cross-correlated extreme positive or negative returns of many assets. Such returns are modelled by the copula with the meaningful tail dependencies. The typical model of such cross-correlation provides the t-Student copula. The author demonstrates that the mutual information tied to this copula can be measured by the 4th order multivariate cumulants. Tested on the artificial data, the 4th order multivariate cumulant approach was used successfully for the financial crisis detection. For this end the author introduces the outliers detection algorithm. In addition this algorithm displays the potential application for the crisis prediction, where the cross-correlated extreme events may appear before the crisis in the analogy to the auto-correlated ones measured by the Hurst Exponent.
Dissipative conformal measures on locally compact spaces
Creators: name: Thomsen, Klaus
Publisher: name: arXiv
Year: 2013
Subjects: subject: Dynamical Systems (math.DS)
subject: Operator Algebras (math.OA)
subject: FOS: Mathematics

description: The paper introduces a general method to construct conformal measures for a local homeomorphism on a locally compact non-compact Hausdorff space, subject to mild irreducibility-like conditions. Among others the method is used to give necessary and sufficient conditions for the existence of eigenmeasures for the dual Ruelle operator associated to a locally compact non-compact irreducible Markov shift equipped with a uniformly continuous potential function. As an application to operator algebras the results are used to determine for which $β$ there are gauge invariant $β$-KMS weights on a simple graph $C^*$-algebra when the one-parameter automorphism group is given by a uniformly continuous real-valued function on the path space of the graph.
description: Theorem 4.6 has been corrected
A liability allocation game
Creators: name: Hankin, Robin K. S.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 91-XX 91Axx

description: The following problem is considered. Two players are each required to allocate a quota of~$n$ counters among~$k$ boxes labelled~$1,2,\ldots,k$. At times $t=1,2,3,\ldots$ a random box is identified; the probability of choosing box~$i$ is~$p_i$. If a player has at least one counter in the chosen box, she removes one counter from it; otherwise she takes no action. The winner is the first player to remove all her counters. The game so described may be modified so that each player simultaneously, but independently, identifies a box at random. This paper analyses this deceptively simple game, which has apparently not been studied in the literature. Some analytical and numerical results are then presented, followed by some challenges for further work.
ENHANCING INFORMATION TECHNOLOGY EDUCATION IN CHILDREN THROUGH E-BOOKS
Creators: name: Jurayeva, Zamirakhon
name: Turganbayev, Batirbek
Publisher: name: Zenodo
Year: 2023

description: In today's digital age, information technology (IT) skills have become increasingly important for individuals of all ages. To equip children with the necessary IT knowledge, educators are exploring innovative teaching methods. This article explores the use of electronic books as a tool in teaching information technologies to children. It examines the benefits of electronic books, discusses effective strategies for incorporating them into educational settings, and highlights the potential impact on children's IT learning outcomes. By embracing electronic books, educators can create engaging and interactive learning experiences, fostering children's interest and proficiency in information technologies.
OiDB - A global database for optical interferometry
Creators: name: Mella, Guillaume
name: Bourgès, Laurent
Publisher: name: Zenodo
Year: 2022

description: The Optical interferometry Database (OiDB) provides a convenient solution to query optical interferometry data (OIFITS format) as well as regularly-updated observation logs obtained with a wide range of interferometric instruments. It relies on Virtual Observatory standards and tools to increase diffusion and operability.
Minimal Length, Friedmann Equations and Maximum Density
Creators: name: Awad, Adel
name: Ali, Ahmed Farag
Publisher: name: arXiv
Year: 2014
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Inspired by Jacobson's thermodynamic approach[gr-qc/9504004], Cai et al [hep-th/0501055,hep-th/0609128] have shown the emergence of Friedmann equations from the first law of thermodynamics. We extend Akbar--Cai derivation [hep-th/0609128] of Friedmann equations to accommodate a general entropy-area law. Studying the resulted Friedmann equations using a specific entropy-area law, which is motivated by the generalized uncertainty principle (GUP), reveals the existence of a maximum energy density closed to Planck density. Allowing for a general continuous pressure $p(ρ,a)$ leads to bounded curvature invariants and a general nonsingular evolution. In this case, the maximum energy density is reached in a finite time and there is no cosmological evolution beyond this point which leaves the big bang singularity inaccessible from a spacetime prospective. The existence of maximum energy density and a general nonsingular evolution is independent of the equation of state and the spacial curvature $k$. As an example we study the evolution of the equation of state $p=ωρ$ through its phase-space diagram to show the existence of a maximum energy which is reachable in a finite time.
description: 15 pages, 1 figure, minor revisions, To appear in JHEP
Các khuyến nghị chính sách để đảm bảo phần mềm nghiên cứu là truy cập mở và sử dụng lại được
Creators: name: Nghĩa, Lê Trung
Publisher: name: Zenodo
Year: 2023
Subjects: chính sách
phần mềm nghiên cứu

description: Đây là tài liệu dịch từ tài liệu của các tác giả Erin C. McKiernan et al, "Policy recommendations to ensure that research software is openly accessible and reusable". Bản gốc tiếng Anh có tại: https://doi.org/10.1371/journal.pbio.3002204
title: A surveillance studies perspective on protest policing
title: The case of video surveillance of demonstrations in Germany
titleType: Subtitle
Creators: name: Ullrich, Peter
name: Wollinger, Gina Rosa
Publisher: name: Technische Universität Berlin
Year: 2011
Subjects: subject: 320 Politikwissenschaft
subject: Demonstrationen
subject: Polizei
subject: Soziale Bewegungen
subject: Videoüberwachung
subject: Police
subject: Political demonstrations
subject: Social movements
subject: Videotaping

description: The videotaping of all kinds of political demonstrations seems to have become a standard policing procedure in many countries. This paper explores the video surveillance of public protest in Germany, where, in line with the international trend, developments on different levels have changed the situation immensely in recent years. This article firstly gives a short introduction to the subject and the history of video surveilling demonstrations. Secondly it describes the (changing) legal regulations in Germany. The third part considers technical developments, while the fourth part focuses on protestors’ reactions. The relative absence of the social sciences from the field motivates the article’s fifth part, which asks after the theoretical implications of the developments analysed from a surveillance studies perspective and explores questions for future research arising from this. Panopticism, surveillant assemblages and the “culture of control” are considered concerning their possibilities and limitations for understanding the problem of video surveillance of demonstrations.
Violence against women in politics in Latin America
Creators: name: Restrepo Sanin, Juliana
Publisher: name: No Publisher Supplied
Year: 2018

description: In recent years, women politicians around the world have reported being victims of harassment and violence because of their work. These practices are known as violence against women in politics or VAWIP. Latin America is the region of the world where this issue has been most widely discussed. This dissertation looks at the debates in the region to understand 1) what VAWIP is and the main manifestations in the region and 2) how discussions about VAWIP have developed and evolved. To understand this phenomenon, this research used a variety of qualitative methods including interviews with activists, politicians, and state officials from several countries in the region, along with legislative debates, women’s organizations reports, news articles, and court cases. The main finding of this research is that gender microaggressions and false accusations of corruption are systematically used in Latin America to attack women politicians and undermine their work. Based on a broad conception of violence, this dissertation also analyses diverse legislative and non-legislative measures created to end VAWIP and offers a framework for evaluating the effectiveness of these measures, and their role in improving women’s representation and electoral and democratic integrity.
Generic Theory of Geometrodynamics from Noether's theorem for the Diff(M) symmetry group
Creators: name: Struckmeier, Jürgen
name: Vasak, David
name: Kirsch, Johannes
Publisher: name: arXiv
Year: 2018
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We work out the most general theory for the interaction of spacetime geometry and matter fields -- commonly referred to as geometrodynamics -- for spin-$0$ and spin-$1$ particles. The minimum set of postulates to be introduced is that (i) the action principle should apply and that(ii) the total action should by form-invariant under the (local) diffeomorphism group. The second postulate thus implements the Principle of General Relativity. According to Noether's theorem, this physical symmetry gives rise to a conserved Noether current, from which the complete set of theories compatible with both postulates can be deduced. This finally results in a new generic Einstein-type equation, which can be interpreted as an energy-momentum balance equation emerging from the Lagrangian $L_{R}$ for the source-free dynamics of gravitation and the energy-momentum tensor of the source system $L_{0}$. Provided that the system has no other symmetries -- such as SU$(N)$ -- the canonical energy-momentum tensor turns out to be the correct source term of gravitation. For the case of massive spin particles, this entails an increased weighting of the kinetic energy over the mass in their roles as the source of gravity as compared to the metric energy momentum tensor, which constitutes the source of gravity in Einstein's General Relativity. We furthermore confirm that a massive vector field necessarily acts as a source for torsion of spacetime. Thus, from the viewpoint of our generic Einstein-type equation, Einstein's General Relativity constitutes the particular case for spin-$0$ and massless spin particle fields, and the Hilbert Lagrangian $L_{R,H}$ as the model for the source-free dynamics of gravitation.
description: 40 pages
Design of a Photonic Lattice Using Shortcuts to Adiabaticity
Creators: name: Stefanatos, Dionisis
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: In this article we use the method of shortcuts to adiabaticity to design a photonic lattice (array of waveguides) which can drive the input light to a controlled location at the output. The output position in the array is determined by functions of the propagation distance along the waveguides, which modulate the lattice characteristics (index of refraction, first and second neighbor couplings). The proposed coupler is expected to posses the robustness properties of the design method, coming from its adiabatic nature, and also to have a smaller footprint than purely adiabatic couplers. The present work provides a very interesting example where methods from quantum control can be exploited to design lattices with desired input-output properties.
Search for a liquid-liquid critical point in models of silica
Creators: name: Lascaris, Erik
name: Hemmati, Mahin
name: Buldyrev, Sergey V.
name: Stanley, H. Eugene
name: Angell, C. Austen
Publisher: name: arXiv
Year: 2014
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Previous research has indicated the possible existence of a liquid-liquid critical point (LLCP) in models of silica at high pressure. To clarify this interesting question we run extended molecular dynamics simulations of two different silica models (WAC and BKS) and perform a detailed analysis of the liquid at temperatures much lower than those previously simulated. We find no LLCP in either model within the accessible temperature range, although it is closely approached in the case of the WAC potential near 4000 K and 5 GPa. Comparing our results with those obtained for other tetrahedral liquids, and relating the average Si-O-Si bond angle and liquid density at the model glass temperature to those of the ice-like beta-cristobalite structure, we conclude that the absence of a critical point can be attributed to insufficient "stiffness" in the bond angle. We hypothesize that a modification of the potential function to mildly favor larger average bond angles will generate a LLCP in a temperature range that is accessible to simulation. The tendency to crystallize in these models is extremely weak in the pressure range studied, although this tendency will undoubtedly increase with increasing stiffness.
A 1000 AU Scale Molecular Outflow Driven by a Protostar with an age of <4000 Years
Creators: name: Furuya, Ray S.
name: Kitamura, Yoshimi
name: Shinnaga, Hiroko
Publisher: name: arXiv
Year: 2018
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: To shed light on the early phase of a low-mass protostar formation process, we conducted interferometric observations towards a protostar GF9-2 using the CARMA and SMA. The observations have been carried out in the CO J=3-2 line and in the continuum emission at the wavelengths of 3 mm, 1 mm and 850 micron. All the continuum images detected a single point-like source with a radius of 250+/-80 AU at the center of the previously known ~3 Msun molecular cloud core. A compact emission is detected towards the object at the Spitzer MIPS and IRAC bands as well as the four bands at the WISE. Our spectroscopic imaging of the CO line revealed that the continuum source is driving a 1000 AU scale molecular outflow, including a pair of lobes where a collimated "higher" velocity red lobe exists inside a poorly collimated "lower" velocity red lobe. These lobes are rather young and the least powerful ones so far detected. A protostellar mass of M~<0.06 Msun was estimated using an upper limit of the protostellar age of (4+/-1)x10^3 yrs and an inferred non-spherical steady mass accretion rate of ~10^{-5} Msun/yr. Together with results from an SED analysis, we discuss that the outflow system is driven by a protostar whose surface temperature of~3,000K, and that the natal cloud core is being dispersed by the outflow.
description: 27 pages, 14 figures, accepted for publication in Astrophysical Journal
Sub-gap spectroscopy of thermally excited quasiparticles in a Nb contacted carbon nanotube quantum dot
Creators: name: Gaass, M.
name: Pfaller, S.
name: Geiger, T.
name: Donarini, A.
name: Grifoni, M.
name: Hüttel, A. K.
name: Strunk, C.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We present electronic transport measurements of a single wall carbon nanotube quantum dot coupled to Nb superconducting contacts. For temperatures comparable to the superconducting gap peculiar transport features are observed inside the Coulomb blockade and superconducting energy gap regions. The observed temperature dependence can be explained in terms of sequential tunneling processes involving thermally excited quasiparticles. In particular, these new channels give rise to two unusual conductance peaks at zero bias in the vicinity of the charge degeneracy point and allow to determine the degeneracy of the ground states involved in transport. The measurements are in good agreement with model calculations.
description: 5 pages, 4 figures
Development and characterization of vascular endothelial growth factor fused with elastin-like polypeptides for chronic wound healing
Creators: name: Veldanda, Amulya
Publisher: name: No Publisher Supplied
Year: 2020

description: Chronic wounds are wounds that fail to go through the key stages of wound healing in a timely and orderly way. Previous research shows that chronic wounds could be a result of impaired blood flow to the wound, as seen in diabetic wounds and pressure ulcers. Around 6.5 million Americans are affected by chronic wounds and the US spends around 23 billion dollars on the treatment of these wounds each year. Current treatments are expensive, ineffective, and could have serious side effects. The use of growth factors is being increasingly investigated as a possible treatment for chronic wounds. However, the hostile environment in chronic wounds that contain a large number of proteases results in exogenous growth factors being quickly degraded within the wound environment. This limitation has prevented growth factors from becoming widely utilized as a treatment option.This work, therefore, shows the development and characterization of vascular endothelial growth factor fused with elastin-like polypeptide (VEGF-ELP) fusion proteins, which have been hypothesized to remain stable for longer durations in the wound environment by resisting degradation by proteases. The protein was developed as recombinant fusion protein nanoparticles using transformation into a bacterial system and a protein purification technique called Inverse Transition Cycling (ITC). Purity was assessed using techniques such as sodium dodecyl sulfate- polyacrylamide gel electrophoresis (SDS-PAGE) and western blotting. The physical characterization of VEGF-ELP was done using a turbidity test and particle size measurement on the purified final product. Several biological assays were also conducted in vitro to show that VEGF-ELP can enhance the different processes which play key roles in wound healing, such as cellular proliferation, migration, and angiogenesis. It was found that endothelial cells show increased proliferation and tube formation and that fibroblasts have better migratory characteristics in the presence of VEGF-ELP. Future steps could involve in vivo testing in experimental animal models with spinal cord injury and diabetes to demonstrate enhanced wound closure in the presence of VEGF-ELP.
Conflicted walls, mixed messages: untangling transitional justice and traumatic memories at the Srebrenica-Potočari Memorial in Bosnia
Creators: name: Cohen, Laura Beth
Publisher: name: No Publisher Supplied
Year: 2018

description: Why is it that, twenty-three years after the Srebrenica genocide, transitional justice and memorialization promises to “heal” and provide “closure” remain largely unrealized—despite assertions by practitioners, scholars, and diplomats to the contrary? The notion that justice is synonymous with healing and closure is just one of the underlying foundations of the transitional justice paradigm expressed at the Srebrenica-Potočari Memorial (Memorial) in Bosnia and Herzegovina (Bosnia).International and local actors have different conceptions and expectations of memorialization initiatives focused on broad outcomes and grassroots processes. There is a gap between where transitional justice’s conceptions of memorials as symbolic reparations end and where memory battles begin. The conversation tends to jump straight from enacting justice into discussions about truth-telling, non-repetition, reconciliation, and repair.How these sites’ stakeholders negotiate politics and emotions directly impacts what the memorials communicate. This is especially true when they are governed by survivors living in post-conflict societies where justice remains fleeting, painful memories abound, and international interest has shifted elsewhere. Less attention is also paid to the intricate ways that stakeholders remember, erase, abandon, and manipulate memories. This dichotomy typifies studies about the Memorial. With a handful of exceptions, most fall within two camps. The first emphasize the role of survivors in lobbying for the site’s location that are connected to post-war refugee return and rebuilding the community. The second focus on how the annual commemoration magnifies ethnic hostilities. I argue that segregating discussions about transitional justice’s efficacy and the ongoing memory wars direct attention away from the problematic mnemonic practices they foster at the Memorial. Questions about the genocide as well as how victimhood, perpetration, complicity, nationalism, religion, and gender are reflected speak to the complicated production and representation of memories that the paradigm tends to eschew. Isolating conflicts about how fraught justice and traumatic memories play out across the memorial’s walls and property reveal why it remains a site of both reparation and contestation decades later.
Neutrinoless Double-Beta Decay: Status and Prospects
Creators: name: Dolinski, Michelle J.
name: Poon, Alan W. P.
name: Rodejohann, Werner
Publisher: name: arXiv
Year: 2019
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Neutrinoless double-beta decay is a forbidden, lepton-number-violating nuclear transition whose observation would have fundamental implications for neutrino physics, theories beyond the Standard Model and cosmology. In this review, we summarize the theoretical progress to understand this process, the expectations and implications under various particle physics models, as well as the nuclear physics challenges that affect the precise predictions of the decay half-life. We will also provide a synopsis of the current and future large-scale experiments that aim at discovering this process in physically well-motivated half-life ranges.
description: 35 pages; Submitted for publication in the Annual Review of Nuclear and Particle Science, Volume 69
JMMC Tools
Creators: name: Mella, Guillaume
name: Bourgèsl, Laurent
name: Tallon-Bosc, Isabelle
name: Tallon, Michel
Publisher: name: Zenodo
Year: 2022

description: The JMMC is the french center for optical interferometry. It aims at providing support for the users of the stellar interferometers currently in operation. This support is possible thanks to the development of efficient and using friendly tools for preparing the observations, analysing the data or archiving the results. The tools are accessible through the web site and linked to a "Face to Face" help especially for the preparation of observations, the PIONIER, GRAVITY and MATISSE data reduction, and the data analysis.
Artificial intelligence–assisted speech therapy (Benway & Preston, 2024)
Creators: name: Benway, Nina R.
name: Preston, Jonathan L.
Publisher: name: ASHA journals
Year: 2024
Subjects: classificationCode: 460211
subject: Speech production
classificationCode: 460299
subject: Artificial intelligence not elsewhere classified
classificationCode: 470409
subject: Linguistic structures (incl. phonology, morphology and syntax)

description: Purpose: This feasibility trial describes changes in rhotic production in residual speech sound disorder following ten 40-min sessions including artificial intelligence (AI)-assisted motor-based intervention with ChainingAI, a version of Speech Motor Chaining that predicts clinician perceptual judgment using the PERCEPT-R Classifier (Perceptual Error Rating for the Clinical Evaluation of Phonetic Targets). The primary purpose is to evaluate /ɹ/ productions directly after practice with ChainingAI versus directly before ChainingAI and to evaluate how the overall AI-assisted treatment package may lead to perceptual improvement in /ɹ/ productions compared to a no-treatment baseline phase.Method: Five participants ages 10;7–19;3 (years;months) who were stimulable for /ɹ/ participated in a multiple (no-treatment)-baseline ABA single-case experiment. Prepractice activities were led by a human clinician, and drill-based motor learning practice was automated by ChainingAI. Study outcomes were derived from masked expert listener perceptual ratings of /ɹ/ from treated and untreated utterances recorded during baseline, treatment, and posttreatment sessions.Results: Listeners perceived significantly more rhoticity in practiced utterances after 30 min of ChainingAI, without a clinician, than directly before ChainingAI. Three of five participants showed significant generalization of /ɹ/ to untreated words during the treatment phase compared to the no-treatment baseline. All five participants demonstrated statistically significant generalization of /ɹ/ to untreated words from pretreatment to posttreatment. PERCEPT-clinician rater agreement (i.e., F1 score) was largely within the range of human–human agreement for four of five participants. Survey data indicated that parents and participants felt hybrid computerized–clinician service delivery could facilitate at-home practice.Conclusions:This study provides evidence of participant improvement for /ɹ/ in untreated words in response to an AI-assisted treatment package. The continued development of AI-assisted treatments may someday mitigate barriers precluding access to sufficiently intense speech therapy for individuals with speech sound disorders.Supplemental Material S1. Supplemental methods.Supplemental Material S2. Supplemental methods and exploring parent and participant end-user experience.Benway, N. R., & Preston, J. L. (2024). Artificial intelligence–assisted speech therapy for /ɹ/: A single-case experimental study. American Journal of Speech-Language Pathology, 33(5), 2461–2486. https://doi.org/ 10.1044/2024_AJSLP-23-00448
On the mean-width of isotropic convex bodies and their associated $L_p$-centroid bodies
Creators: name: Milman, Emanuel
Publisher: name: arXiv
Year: 2014
Subjects: subject: Functional Analysis (math.FA)
subject: FOS: Mathematics

description: For any origin-symmetric convex body $K$ in $\mathbb{R}^n$ in isotropic position, we obtain the bound: \[ M^*(K) \leq C \sqrt{n} \log(n)^2 L_K ~, \] where $M^*(K)$ denotes (half) the mean-width of $K$, $L_K$ is the isotropic constant of $K$, and $C>0$ is a universal constant. This improves the previous best-known estimate $M^*(K) \leq C n^{3/4} L_K$. Up to the power of the $\log(n)$ term and the $L_K$ one, the improved bound is best possible, and implies that the isotropic position is (up to the $L_K$ term) an almost $2$-regular $M$-position. The bound extends to any arbitrary position, depending on a certain weighted average of the eigenvalues of the covariance matrix. Furthermore, the bound applies to the mean-width of $L_p$-centroid bodies, extending a sharp upper bound of Paouris for $1 \leq p \leq \sqrt{n}$ to an almost-sharp bound for an arbitrary $p \geq \sqrt{n}$. The question of whether it is possible to remove the $L_K$ term from the new bound is essentially equivalent to the Slicing Problem, to within logarithmic factors in $n$.
description: 15 pages; added references, to appear in IMRN. See publisher's website for final version
Swingin' with the Stalinists
Creators: name: Conroy, Shawn Michael
Publisher: name: No Publisher Supplied
Year: 2018

description: This thesis represented the fusion of my passion for music with Soviet history. While I initially envisioned a study of the Soviet counterculture movement within the global 1960s at the start of my preparation for the thesis, my love for music and the proximity of the research treasure trove at the Institute of Jazz Studies helped me to narrow my focus and examine more closely the complex environment in which Soviet jazz musicians lived in the postwar period. My main question for this paper involved how musicians viewed their professional relationship with state actors in terms of their conceptions of authentic Soviet jazz. To explore this topic, I looked at the Melodiya record collection at IJS and autobiographies by Soviet jazz musicians active during the period. My analysis revealed that musicians had differing epistemologies regarding Soviet jazz, which influenced their perceptions of authentic Soviet jazz and the state’s role in its creation. These conceptions often clashed with one another, which created deep rifts in the Soviet jazz scene. In my conclusion, I argued that musicians attempted to break this deadlock and establish a hegemonic conception of authentic Soviet jazz by couching their arguments in official ideological discourse, which directed the negative scrutiny of the Soviet authorities towards certain conceptions of authentic Soviet jazz. The efficacy and ubiquity of musicians’ use of official ideology in their arguments represented proof of their cultural fusion with the Soviet state regardless of any personal misgivings towards it.
A long-term alternative formula for a stochastic stock price model
Creators: name: Okabe, Takuya
name: Yoshimura, Jin
Publisher: name: arXiv
Year: 2019
Subjects: subject: Mathematical Finance (q-fin.MF)
subject: FOS: Economics and business

description: This study presents a long-term alternative formula for stock price variation described by a geometric Brownian motion on the basis of median instead of mean or expected values. The proposed method is motivated by the observation made in remote fields, where optimality of bet-hedging or diversification strategies is explained based on a measure different from expected value, like geometric mean. When the probability distribution of possible outcomes is significantly skewed, it is generally known that expected value leads to an erroneous picture owing to its sensitivity to outliers, extreme values of rare occurrence. Since geometric mean, or its counterpart median for the log-normal distribution, does not suffer from this drawback, it provides us with a more appropriate measure especially for evaluating long-term outcomes dominated by outliers. Thus, the present formula makes a more realistic prediction for long-term outcomes of a large volatility, for which the probability distribution becomes conspicuously heavy-tailed.