cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Exploring Image Augmentations for Siamese Representation Learning with Chest X-Rays
Creators: name: van der Sluijs, Rogier
name: Bhaskhar, Nandita
name: Rubin, Daniel
name: Langlotz, Curtis
name: Chaudhari, Akshay
Publisher: name: arXiv
Year: 2023
Subjects: subject: Image and Video Processing (eess.IV)
subject: Artificial Intelligence (cs.AI)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Image augmentations are quintessential for effective visual representation learning across self-supervised learning techniques. While augmentation strategies for natural imaging have been studied extensively, medical images are vastly different from their natural counterparts. Thus, it is unknown whether common augmentation strategies employed in Siamese representation learning generalize to medical images and to what extent. To address this challenge, in this study, we systematically assess the effect of various augmentations on the quality and robustness of the learned representations. We train and evaluate Siamese Networks for abnormality detection on chest X-Rays across three large datasets (MIMIC-CXR, CheXpert and VinDR-CXR). We investigate the efficacy of the learned representations through experiments involving linear probing, fine-tuning, zero-shot transfer, and data efficiency. Finally, we identify a set of augmentations that yield robust representations that generalize well to both out-of-distribution data and diseases, while outperforming supervised baselines using just zero-shot transfer and linear probes by up to 20%. Our code is available at https://github.com/StanfordMIMI/siaug.
description: Equal contributions. Oral paper at MIDL 2023. Additional experiments in appendix in V2. Keywords: Data Augmentations, Self-Supervised Learning, Medical Imaging, Chest X-rays, Siamese Representation Learning
Engagement Time Machine
Creators: name: McCauley, G.
name: Thormann, T.
name: Tria, E.
name: Weinberg, J.
Publisher: name: Zenodo
Year: 2023
Subjects: UVA MSDS 2023

description: In this paper, we will discuss the processes of using machine learning to engineer a novel set of user-level features and construct a model to accurately recognize high-quality, valuable users early on in their life cycles. Emerging technologies can be applied to the academic publishing space in many exciting ways: it can transform the selection process for peer review, use targeted pokes to keep subscribers engaged, and tailor advertising to be highly relevant for each user. Our project builds the framework for all of these applications. We use a K-means clustering model to determine what constitutes a highly-engaged user and a multilayer perceptron (MLP) model to predict whether new users who have performed a threshold number of events are likely to remain highly engaged. Using first-party data collected from the customer data platform (CDP) Hum, we developed a model that can accurately classify the online readers of an academic publisher as being high- or low-quality based on their early-stage engagement profiles. Using Hum’s relational database containing over 100 features, we engineered four new variables to serve as the basis of our analysis that illuminate differences between high- value and low-value user behavior. Through a combination of K- means clustering for determining training labels and an MLP for predicting which of our client’s users belong to each cluster, we were able to identify what characteristics are indicative of high- versus low-quality engagement. Based on our derived features and labels determined by K-means clustering, our MLP model is able to predict whether a user is high- or low-quality with 95% accuracy. These engineered features and this model framework will now be able to serve as foundational components in the burgeoning field of digital academic publisher engagement.
Motion-compensated hybrid coders in video communications
Creators: name: Chen., Chi-Fa
Publisher: name: Monash University
Year: 2021

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Transcending shift-invariance in the paraxial regime via end-to-end inverse design of freeform nanophotonics
Creators: name: Li, William F.
name: Arya, Gaurav
name: Roques-Carmes, Charles
name: Lin, Zin
name: Johnson, Steven G.
name: Soljačić, Marin
Publisher: name: arXiv
Year: 2023
Subjects: subject: Optics (physics.optics)
subject: Image and Video Processing (eess.IV)
subject: FOS: Physical sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Traditional optical elements and conventional metasurfaces obey shift-invariance in the paraxial regime. For imaging systems obeying paraxial shift-invariance, a small shift in input angle causes a corresponding shift in the sensor image. Shift-invariance has deep implications for the design and functionality of optical devices, such as the necessity of free space between components (as in compound objectives made of several curved surfaces). We present a method for nanophotonic inverse design of compact imaging systems whose resolution is not constrained by paraxial shift-invariance. Our method is end-to-end, in that it integrates density-based full-Maxwell topology optimization with a fully iterative elastic-net reconstruction algorithm. By the design of nanophotonic structures that scatter light in a non-shift-invariant manner, our optimized nanophotonic imaging system overcomes the limitations of paraxial shift-invariance, achieving accurate, noise-robust image reconstruction beyond shift-invariant resolution.
Uma revisão da literatura das tecnologias de informação e comunicação que ajudam na composição de ambientes de ensino híbridos
Creators: name: Zati, Aline Fermino
name: Araújo Lima, Danielli
Publisher: name: figshare
Year: 2022
Subjects: Education

description: Desde o surgimento da internet e consequentemente os novos meios de comunicação, além da facilidade ao acesso a informação, encontrou-se a necessidade da sua utilização para beneficiar diversas áreas. Uma delas, e de grande importância, é a da educação, abrangendo todas as suas ramificações. As Tecnologias de Informação e Comunicação ofereceram uma solução para essa necessidade, incorporando ao modelo tradicional uma nova visão de ensino, buscando complementar a existente agregando valor ao modelo de educação existente. Como foco principal deste artigo portanto, temos as Tecnologias de Informação e Comunicação que combinadas com os Ambientes de Ensino Híbrido, visam alcançar um novo patamar na dissolução da informação nos ambientes de ensino em todas as suas fases.
Mode stability on the real axis
Creators: name: Andersson, Lars
name: Ma, Siyuan
name: Paganini, Claudio
name: Whiting, Bernard F.
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Analysis of PDEs (math.AP)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 83C57

description: A generalization of the mode stability result of Whiting (1989) for the Teukolsky equation is proved for the case of real frequencies. The main result of the paper states that a separated solution of the Teukolsky equation governing massless test fields on the Kerr spacetime, which is purely outgoing at infinity, and purely ingoing at the horizon, must vanish. This has the consequence, that for real frequencies, there are linearly independent fundamental solutions of the radial Teukolsky equation which are purely ingoing at the horizon, and purely outgoing at infinity, respectively. This fact yields a representation formula for solutions of the inhomogenous Teukolsky equation.
description: 20 pages, 4 figures. Reference added, revtex4-1 format
High-performance shape memory composites with intrinsic heating capabilities
Creators: name: Murali, Gokul Ganesh
Publisher: name: Imperial College London
Year: 2023

description: Shape morphing structures have played a significant role within the field of aerospace for more than a century. While the shape morphing aerostructures of the past and present have depended on hinges and motors to achieve morphing, their future is expected to rely on smart materials and structures that have intrinsic shape morphing capabilities. One such smart material, that has previously been developed at Imperial College London, is the carbon fibre reinforced epoxy polymer (CFRP) composite with thermoplastic (TP) interleaves. These interleaved composites exhibit controllable stiffness (CS) and shape memory (SM) capabilities under suitable thermal conditions. While these interleaved composites showed excellent shape morphing capabilities, they had several drawbacks. These composites showed poor flexural modulus and through-thickness shear strength compared to the epoxy-based non-interleaved CFRP. These composites also used an oven to achieve the high temperatures required to exhibit the CS and SM capabilities. This thesis describes studies conducted to mitigate these drawbacks. In the first study described in this thesis, the source of the premature through-thickness shear failure in TP interleaved CFRP composites was discovered to be the low shear strength of the polystyrene (PS) interleaves used in previous works. It was then demonstrated that replacing PS with Poly(styrene-co-acrylonitrile) (SAN) could improve the through-thickness shear strength of the interleaved composites to be almost as high as that of pristine CFRP. Furthermore, the SAN-interleaved CFRP laminates also exhibited excellent CS and SM capabilities. In the next study described in this thesis, it was demonstrated that the flexural modulus of TP interleaved CFRP composites can be substantially improved by two different methods- (i) reducing the thickness of the TP interleaves, and (ii) introducing reinforcements within the TP interleaves. The following study describes how intrinsic heating capability was achieved in TP interleaved CFRP composites, through resistive heating of heater elements such as stainless steel (SS) meshes and woven carbon fabric (WCF) embedded within the layup of the composite. This intrinsic heating strategy was used to supply the temperature necessary for the corresponding composites to exhibit CS and SM capabilities. As a result, these intrinsically heated TP interleaved CFRP composites exhibited successful out-of-oven morphing capabilities. In the final study described in this thesis, composite structures that were initially flat in their as-cured state, but were capable of deployment into planar and curved meshes were designed. Finite element numerical models were used to predict the deployment capabilities of these composite structures. Finally, the deployable composite mesh structures were manufactured and characterised.
Economic Valuation of Anti-retroviral Drugs in Ethiopia: Application of CVM
Creators: name: Getachew, Martha
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2003

description: In this study, the willingness to pay of people living with HIV/AIDS for antiretroviral drugs is assessed. A contingent valuation survey was carried out on 440 adults living with HIV/AIDS. The research result indicates that the mean willingness to pay for the drugs is Birr 163.6 and the median is Birr 100, per month. A multivariate statistical analysis of the determinants of individual's willingness to pay reveals that individuals with larger family size, with others paying for their treatment cost other than themselves and with spouse deceased are less willing to pay for the drugs. Individuals with higher income are more willing to pay. Older respondents are also willing to pay more. Among the explanatory variables, income was found to be highly significant in influencing WTP by the different estimation techniques employed in the research implying low income levels of respondents prevent them from acquiring the drugs, if the drugs be marketed. This calls for the participation of many stakeholders in the acquisition and distribution of anti-retroviral drugs if equityisdesired. Key words: Contingent valuation method, Willingness to pay, antiretroviral drugs, CLAD
Dynamical-Corrected Nonadiabatic Geometric Quantum Computation
Creators: name: Ding, Cheng-Yun
name: Chen, Li
name: Zhang, Li-Hua
name: Xue, Zheng-Yuan
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Recently, nonadiabatic geometric quantum computation has been received great attentions, due to its fast operation and intrinsic error resilience. However, compared with the corresponding dynamical gates, the robustness of implemented nonadiabatic geometric gates based on the conventional single-loop scheme still has the same order of magnitude due to the requirement of strict multi-segment geometric controls, and the inherent geometric fault-tolerance characteristic is not fully explored. Here, we present an effective geometric scheme combined with a general dynamical-corrected technique, with which the super-robust nonadiabatic geometric quantum gates can be constructed over the conventional single-loop and two-loop composite-pulse strategies, in terms of resisting the systematic error, i.e., $σ_x$ error. In addition, combined with the decoherence-free subspace (DFS) coding, the resulting geometric gates can also effectively suppress the $σ_z$ error caused by the collective dephasing. Notably, our protocol is a general one with simple experimental setups, which can be potentially implemented in different quantum systems, such as Rydberg atoms, trapped ions and superconducting qubits. These results indicate that our scheme represents a promising way to explore large-scale fault-tolerant quantum computation.
description: 10 pages, 9 figures
BEaTriX, expanded X-ray beam facility for testing modular elements of telescope optics: an update
Creators: name: Pelliciari, Carlo
name: Spiga, Daniele
name: Bonnini, Elisa
name: Buffagni, Elisa
name: Ferrari, Claudio
name: Pareschi, Giovanni
name: Tagliaferri, Gianpiero
Publisher: name: arXiv
Year: 2016
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: We present in this paper an update on the design of BEaTriX (Beam Expander Testing X-ray facility), an X-ray apparatus to be realized at INAF/OAB and that will generate an expanded, uniform and parallel beam of soft X-rays. BEaTriX will be used to perform the functional tests of X-ray focusing modules of large X-ray optics such as those for the ATHENA X-ray observatory, using the Silicon Pore Optics (SPO) as a baseline technology, and Slumped Glass Optics (SGO) as a possible alternative. Performing the tests in X-rays provides the advantage of an in-situ, at-wavelength quality control of the optical modules produced in series by the industry, performing a selection of the modules with the best angular resolution, and, in the case of SPOs, there is also the interesting possibility to align the parabolic and the hyperbolic stacks directly under X-rays, to minimize the aberrations. However, a parallel beam with divergence below 2 arcsec is necessary in order to measure mirror elements that are expected to reach an angular resolution of about 4 arcsec, since the ATHENA requirement for the entire telescope is 5 arcsec. Such a low divergence over the typical aperture of modular optics would require an X-ray source to be located in a several kilometers long vacuum tube. In contrast, BEaTriX will be compact enough (5 m x 14 m) to be housed in a small laboratory, will produce an expanded X-ray beam 60 mm x 200 mm broad, characterized by a very low divergence (1.5 arcsec HEW), strong polarization, high uniformity, and X-ray energy selectable between 1.5 keV and 4.5 keV. In this work we describe the BEaTriX layout and show a performance simulation for the X-ray energy of 4.5 keV.
description: Preprint version: the fully published paper can be downloaded at http://dx.doi.org/10.1117/12.2188607
Investigation of the Performance and Emission Character Biodiesel-Diesel Blends in Direct Injection Diesel Engines
Creators: name: Gebru, Hadish Teklehaimanot
Publisher: name: Ethiopian Journal of Science and Sustainable Development
Year: 2023

description: The emission and performance attributes of a mono-cylinder direct injection variable compression test engine were explored using Jatropha curcas as a feedstock for biodiesel production. Two-step techniques, esterification and transesterification, were employed to create biodiesel with diesel fuel-like properties. In the first phase esterification process, the molar ratio of methanol to the parent oil Jatropha curcas was 1:6, and 1% volume of sulphuric acid was added. The mixture was maintained at 65 degrees Celsius, and the magnetic stirrer on the hotplate was adjusted to 600 rpm. At this point, the acid value reduced from 4.6mg-KOH/g-oil to 1mg-KOH/g-oil. During the second transesterification procedure, the catalysts were sodium hydroxide pellets and analytical grade methanol at the same stirring speed and mixture temperature for 25 minutes. The emission as well as performance characteristics of biodiesel-diesel blends containing various mixing ratios were studied. The test samples B20, B100 produced less carbon monoxide and hydrocarbon as compared to the baseline diesel fuel, and the power, and torque outputs of B20 were superior to all blends. The study's unexpected conclusion was that increasing the blend's biodiesel component increases braking power and torque while decreasing brake-specific fuel consumption.
description: Ethiopian Journal of Science and Sustainable Development, Vol 10 No 2 (2023): EJSSD
Note about Lutheran General Hospital
Creators: name: :Unav
Publisher: name: University of Victoria Libraries
Year: 2020
Subjects: subject: Street addresses
valueUri: http://id.worldcat.org/fast/1134645
subject: Preuss, Siegfried
subject: Hospitals
valueUri: http://id.worldcat.org/fast/961166

description: Piece of paper with the address of the Lutheran General Hospital handwritten on it. No date available.
Technical Efficiency Analysis of the Ethiopian Brewery Industries
Creators: name: Solomon, Nebyou
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2018

description: This study aims at determining the level of technical efficiency of the Ethiopian brewery industries overtime using stochastic frontier production function model. All the parameters of the frontier function and the inefficiency model have been estimated simultaneously using maximum likelihood estimation. The usefulness of the frontier approach to the measuring efficiency of industries is twofold. Firstly, it provides managers of the firms with answers to the questions regarding cost minimization, organization and distribution systems. Secondly, frontier methodology offers guidance to regulators and policy makers as for solving and mitigating problems in particular industry and economy in general. The study considered five brewery industries over the period of 2006-2010 using firm level panel data. The empirical result indicates that the Translog functional form with maximum likelihood estimation better explains the production behavior of the brewery industries .The study estimates the average technical efficiency of the brewery industries is 80%.Therefore, the results indicate that there is a great potential exists for brewery industries to further increase the value added by 20% using the available input, technology and efficiency improvement, thereby reducing the cost of production. It"s interesting to note that out of the five technical inefficiency factors included in the translog model there were only two factors (export and investment intensity) which had a significant effect on technical inefficiency. The study further identifies that the mean efficiency of brewery industries vary among the industries and year-wise mean seems to be unstable during the study period. Therefore it invites further reform, competition and continued efforts to update technologies and equipment are required in pursuit of efficiency in the brewery industries. In order to effectively utilize the potential of the industries, efforts have to be made in improving investment intensity, export intensity, infrastructural and institutional development, and availability of updated marketing information system. The creation of conducive business environment enhances the industries development and promotes the competence in the global market competition. Keywords: Brewery industries, stochastic production function, technical efficiency
X-ray variability of cool stars: Magnetic activity and accretion
Creators: name: Stelzer, B.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: This article provides a review of X-ray variability from late-type stars with particular focus on the achievements of XMM-Newton and its potential for future studies in this field.
description: 6 pages, to appear in Astronomische Nachrichten as part of the proceedings of "XMM-Newton: The Next Decade", held at ESAC, Madrid, Spain, 9-11 May 2016
Zur Bedeutung von Gen 37,15-17 im Kontext der Josephs-Erzählung und von B 21-28 in dem der ägyptischen Sinuhe-Erzählung
Creators: name: Koenen, Klaus
Publisher: name: Biblische Notizen
Year: 1970

description: Biblische Notizen, Bd. 86 (1997): Biblische Notizen, Band 86
The microstructural and mechanical properties of plasma sprayed coatings
Creators: name: Ning., Philip Cheang Hong
Publisher: name: Monash University
Year: 2021

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Motives for the adoption of protective health behaviours for men and women: A social psychological model versus the ordered protection motivation model
Creators: name: Ghea, Vanessa C
Publisher: name: CQUniversity
Year: 2022
Subjects: Social determinants of health
Health psychology

description: The aims of the present study were to (a) evaluate and to compare the adequacy of a social psychological model and a cognitive appraisal model in predicting intention and action with respect to the adoption of protective health behaviours, (b) investigate the direction and strength of the path coefficients linking the predictor and criterion variables in each model in order to determine which predictor variables played a significant role in the (non)adoption of protective health behaviours, and (c) investigate the direct and indirect roles that gender role and SES play in determining the decision to adopt or not to adopt protective health behaviours. Existing knowledge about disease and illness makes it imperative for health researchers to understand the factors involved in reducing exposure to these endemic threats. Whilst extensive research has been carried out to investigate health beliefs and health threats, most of the results that have been obtained have been descriptive in nature. They say very little about how males and females internalise and conceptualise the identified social psychological and cognitive appraisal variables or how these variables influence the health decision-making process. Two theoretical models were developed to represent the decision-making process regarding the adoption of good health behaviours. A total of 550 males and 759 females (total n = 1,309) from Rockhampton and Gladstone in the State of Queensland, Australia, participated in the study by responding to one of three questionnaires designed to measure the study's critical variables. Whilst the overall findings generally supported the decision-making process represented by both models, the results indicated that the social psychological model represented a better predictor of the health decision-making process than the cognitive appraisal model. The findings also indicated that high masculinity combined with low femininity and a low SES directly decreased the motivation of males and females to adopt protective health behaviours when confronted by a health threat. Finally, for both models, the results indicated that the exogenous variables of gender role and SES had both direct and indirect influences on behavioural intention and action for males and females across the three disease dimensions. The implications of the findings with regards to differences in male and female health status are discussed.
Acoustic phonon contribution to the resistivity of twisted bilayer graphene
Creators: name: Davis, Seth M.
name: Wu, Fengcheng
name: Sarma, Sankar Das
Publisher: name: arXiv
Year: 2023
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We calculate the contribution to the doping ($n$) and temperature ($T$) dependence of the electrical resistivity of twisted bilayer graphene (TBLG) due to scattering by acoustic phonons. Our calculation retains the full Bistritzer-MacDonald (BM) band structure, with a focus on understanding the role of the complicated geometric features present in the BM band structure on electronic transport theory. We find that the band geometry plays an important role in determining the resistivity, giving an intricate dependence on both $n$ and $T$ that mirrors features in the band structure and complicates the Bloch-Grüneisen (BG) crossover. Our calculations predict pronounced departures from the standard simplistic expectation of a linear $T$-dependence above the BG crossover. In particular, we are able to explain the presence of the resistance peaks that have been observed in experiment, as well as quantitatively predict the temperatures at which they occur. Our calculated theoretical results are germane to an ongoing debate over the existence of a strange metal state in TBLG by providing a quantitatively accurate theory for the TBLG resistivity at finite temperatures.
description: arXiv admin note: text overlap with arXiv:2206.04080
Attempts to test an alternative electrodynamic theory of superconductors by low-temperature scanning tunneling and atomic force microscopy
Creators: name: Peronio, Angelo
name: Giessibl, Franz J.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We perform an experiment to test between two theories of the electrodynamics of superconductors: the standard London theory and an alternative proposed by J. E. Hirsch [Phys. Rev. B 69, 214515 (2004)]. The two alternatives give different predictions with respect to the screening of an electric field by a superconductor, and we try to detect this effect using atomic force microscopy on a niobium sample. We also perform the reverse experiment, where we demonstrate a superconductive tip mounted on a qPlus force sensor. Due to limited accuracy, we are able neither to prove nor to disprove Hirsch's hypothesis. Within our accuracy of 0.17 N/m, the superconductive transition does not alter the atomic-scale interaction between tip and sample.
description: 7 pages, 5 figures. Minor amendments
Polarization-selective out-coupling of whispering gallery modes
Creators: name: Sedlmeir, Florian
name: Foreman, Matthew R.
name: Vogl, Ulrich
name: Zeltner, Richard
name: Schunk, Gerhard
name: Strekalov, Dmitry V.
name: Marquardt, Christoph
name: Leuchs, Gerd
name: Schwefel, Harald G. L.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Whispering gallery mode (WGM) resonators are an important building block for linear, nonlinear and quantum optical experiments. In such experiments, independent control of coupling rates to different modes can lead to improved conversion efficiencies and greater flexibility in generation of non-classical states based on parametric down conversion. In this work, we introduce a scheme which enables selective out-coupling of WGMs belonging to a specific polarization family, while the orthogonally polarized modes remain largely unperturbed. Our technique utilizes material birefringence in both the resonator and coupler such that a negative (positive) birefringence allows selective coupling to TE (TM) polarized WGMs. We formulate a new coupling condition suitable for describing the case where the refractive indices of the resonator and the coupler are almost the same, from which we derive the criterion for polarization-selective coupling. We experimentally demonstrate our proposed method using a lithium niobate disk resonator coupled to a lithium niobate prism, where we show a 22dB suppression of coupling to TM modes relative to TE modes.
Jakobs Segen über Ephraim und Manasse (Gen.48,15f.) als Beispiel frühisraelitischer familiärer Frömmigkeit
Creators: name: Hirth, Volkmar
Publisher: name: Biblische Notizen
Year: 1970

description: Biblische Notizen, Bd. 86 (1997): Biblische Notizen, Band 86
Ground state properties of a multi-component bosonic mixture: a Gutzwiller mean-field study
Creators: name: Liu, Chenrong
name: Chen, Po
name: He, Linli
name: Xu, Fangfang
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: Using the single-site Gutzwiller method, we theoretically study the ground state and the interspecies entanglement properties of interexchange symmetric multi-component (two- and three-) bosonic mixtures in an optical lattice, and the results are generalized to an $n$-component ($n=2,3,4,\cdots$) system. We compute the mean-field phase diagram, the interspecies entanglement entropy, and the ground state spectral decomposition. Three phases namely the $n$-component Superfluid state (nSF), the $n$-component Mott insulator state (nMI), and the Super-counter-fluid state (SCF) are observed. Interestingly, we find that there are $n-1$ SCF lobes to separate every two neighboring nMI lobes in the phase diagram. More importantly, we derive the exact general expression of the interspecies entanglement entropy for the SCF phase. In addition, we also investigate the demixing effect of an n-component mixture and demonstrate that the mixing-demixing critical point is independent of n.
description: 12 pages, 6 figures
One-Shot Labeling for Automatic Relevance Estimation
Creators: name: MacAvaney, Sean
name: Soldaini, Luca
Publisher: name: arXiv
Year: 2023
Subjects: subject: Information Retrieval (cs.IR)
subject: FOS: Computer and information sciences

description: Dealing with unjudged documents ("holes") in relevance assessments is a perennial problem when evaluating search systems with offline experiments. Holes can reduce the apparent effectiveness of retrieval systems during evaluation and introduce biases in models trained with incomplete data. In this work, we explore whether large language models can help us fill such holes to improve offline evaluations. We examine an extreme, albeit common, evaluation setting wherein only a single known relevant document per query is available for evaluation. We then explore various approaches for predicting the relevance of unjudged documents with respect to a query and the known relevant document, including nearest neighbor, supervised, and prompting techniques. We find that although the predictions of these One-Shot Labelers (1SL) frequently disagree with human assessments, the labels they produce yield a far more reliable ranking of systems than the single labels do alone. Specifically, the strongest approaches can consistently reach system ranking correlations of over 0.86 with the full rankings over a variety of measures. Meanwhile, the approach substantially increases the reliability of t-tests due to filling holes in relevance assessments, giving researchers more confidence in results they find to be significant. Alongside this work, we release an easy-to-use software package to enable the use of 1SL for evaluation of other ad-hoc collections or systems.
description: SIGIR 2023
title: ВЫСОКАЯ КОНЦЕНТРАЦИЯ ВПЕЧАТЛЕНИЙ: ЧУВСТВА, ОБРАЗЫ, ИДЕИ
Creators: name: Маленко, Сергей
Publisher: name: Новгородский государственный университет имени Ярослава Мудрого (НовГУ)
Year: 2022

description: Дорогие читатели и будущие авторы!
Сегодня мы предлагаем Вашему вниманию свой новый издательский проект: электронный сетевой журнал под названием «Индустрии впечатлений. Технологии социокультурных исследований» (EISCRT) / «Experience industries. Socio-Cultural Research Technologies (EISCRT)». Идея такого издания была далеко не случайной. Сегодня общество и культура вплотную столкнулись с немыслимыми ранее возможностями и вызовами, актуальность которых значительно возросла в связи с новыми технологическими реалиями современной эпохи. Именно они задают моду на трансформацию официальных и повседневных практик, нацеленных на утверждение человека, мир его ценностей и смыслов в качестве решающего и приоритетного направления развития культуры.
Low Gas Fractions Connect Compact Star-Forming Galaxies to their z ~ 2 Quiescent Descendants
Creators: name: Spilker, Justin S.
name: Bezanson, Rachel
name: Marrone, Daniel P.
name: Weiner, Benjamin J.
name: Whitaker, Katherine E.
name: Williams, Christina C.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Early quiescent galaxies at z~2 are known to be remarkably compact compared to their nearby counterparts. Possible progenitors of these systems include galaxies that are structurally similar, but are still rapidly forming stars. Here, we present Karl G. Jansky Very Large Array (VLA) observations of the CO(1-0) line towards three such compact, star-forming galaxies at z~2.3, significantly detecting one. The VLA observations indicate baryonic gas fractions >~5 times lower and gas depletion times >~10 times shorter than normal, extended massive star-forming galaxies at these redshifts. At their current star formation rates, all three objects will deplete their gas reservoirs within 100Myr. These objects are among the most gas-poor objects observed at z>2, and are outliers from standard gas scaling relations, a result which remains true regardless of assumptions about the CO-H2 conversion factor. Our observations are consistent with the idea that compact, star-forming galaxies are in a rapid state of transition to quiescence in tandem with the build-up of the z~2 quenched population. In the detected compact galaxy, we see no evidence of rotation or that the CO-emitting gas is spatially extended relative to the stellar light. This casts doubt on recent suggestions that the gas in these compact galaxies is rotating and significantly extended compared to the stars. Instead, we suggest that, at least for this object, the gas is centrally concentrated, and only traces a small fraction of the total galaxy dynamical mass.
description: Accepted version. Minor text changes, but now includes a figure explicitly showing these objects in relation to the Kennicutt-Schmidt relation. 8 pages, 5 figures
Algorithm for connectivity queries on real algebraic curves
Creators: name: Islam, Md Nazrul
name: Poteaux, Adrien
name: Prébet, Rémi
Publisher: name: arXiv
Year: 2023
Subjects: subject: Symbolic Computation (cs.SC)
subject: Algebraic Geometry (math.AG)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: We consider the problem of answering connectivity queries on a real algebraic curve. The curve is given as the real trace of an algebraic curve, assumed to be in generic position, and being defined by some rational parametrizations. The query points are given by a zero-dimensional parametrization. We design an algorithm which counts the number of connected components of the real curve under study, and decides which query point lie in which connected component, in time log-linear in $N^6$, where $N$ is the maximum of the degrees and coefficient bit-sizes of the polynomials given as input. This matches the currently best-known bound for computing the topology of real plane curves. The main novelty of this algorithm is the avoidance of the computation of the complete topology of the curve.
description: 10 pages, 2 figures
The interpretation of friction cone penetrometer tests in sand
Creators: name: Chapman., Gary Alan
Publisher: name: Monash University
Year: 2021

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
The zone: essays on race, class, and faith in the desert Southwest
Creators: name: Barber, Rachel
Publisher: name: No Publisher Supplied
Year: 2022

description: What does it mean to walk between worlds? How do we maintain faith in people, justice, love—anything—in the face of deep inequities? In this essay collection, I explore how race, class, and religion interact with the world of homeless services. Describing my experiences working with homeless individuals in Phoenix, Arizona, alongside my days volunteering in middle-class, Christian circles, I examine how communities today can come to see wealth inequality as both a social and spiritual issue. Blending research with personal narrative, I discuss how systems of homelessness and housing justice intersect with the role that individuals play in breaking and building loving communities.
Nonlocal general vector nonlinear Schroedinger equations:Integrability, PT symmetribility, and solutions
Creators: name: Yan, Zhenya
Publisher: name: arXiv
Year: 2016
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: Mathematical Physics (math-ph)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: A family of new one-parameter (ε_x=\pm 1) nonlinear wave models (called G_{ε_x}^{(nm)} model) is presented, including both the local (ε_x=1) and new integrable nonlocal $(ε_x=-1)$ general vector nonlinear Schrödinger (VNLS) equations with the self-phase, cross-phase, and multi-wave mixing modulations. The nonlocal G_{-1}^{(nm)} model is shown to possess the Lax pair and infinite number of conservation laws for $m=1$. We also establish a connection between the G_{ε_x}^{(nm)} model and some known models. Some symmetric reductions and exact solutions (e.g., bright, dark, and mixed bright-dark solitons) of the representative nonlocal systems are also found. Moreover, we find that the new general two-parameter (ε_x, ε_t) model (called G_{ε_x, ε_t}^{(nm)} model) including the G_{ε_x}^{(nm)} model is invariant under the PT-symmetric transformation and the PT symmetribility of its self-induced potentials is discussed for the distinct two parameters (ε_x, ε_t)=(\pm 1, \pm 1).
description: 7 pages
Do Machine Learning Models Produce TypeScript Types That Type Check?
Creators: name: Yee, Ming-Ho
name: Guha, Arjun
Publisher: name: arXiv
Year: 2023
Subjects: subject: Software Engineering (cs.SE)
subject: Programming Languages (cs.PL)
subject: FOS: Computer and information sciences

description: Type migration is the process of adding types to untyped code to gain assurance at compile time. TypeScript and other gradual type systems facilitate type migration by allowing programmers to start with imprecise types and gradually strengthen them. However, adding types is a manual effort and several migrations on large, industry codebases have been reported to have taken several years. In the research community, there has been significant interest in using machine learning to automate TypeScript type migration. Existing machine learning models report a high degree of accuracy in predicting individual TypeScript type annotations. However, in this paper we argue that accuracy can be misleading, and we should address a different question: can an automatic type migration tool produce code that passes the TypeScript type checker? We present TypeWeaver, a TypeScript type migration tool that can be used with an arbitrary type prediction model. We evaluate TypeWeaver with three models from the literature: DeepTyper, a recurrent neural network; LambdaNet, a graph neural network; and InCoder, a general-purpose, multi-language transformer that supports fill-in-the-middle tasks. Our tool automates several steps that are necessary for using a type prediction model, (1) importing types for a project's dependencies; (2) migrating JavaScript modules to TypeScript notation; (3) inserting predicted type annotations into the program to produce TypeScript when needed; and (4) rejecting non-type predictions when needed. We evaluate TypeWeaver on a dataset of 513 JavaScript packages, including packages that have never been typed before. With the best type prediction model, we find that only 21% of packages type check, but more encouragingly, 69% of files type check successfully.
description: Published at the 37th European Conference on Object-Oriented Programming (ECOOP 2023)
The evolutionary status of dense cores in the NGC 1333 IRAS 4 region
Creators: name: Koumpia, E.
name: van der Tak, F. F. S.
name: Kwon, W.
name: Tobin, J. J.
name: Fuller, G. A.
name: Plume, R.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Protostellar evolution, following the formation of the protostar is becoming reasonably well characterized, but the evolution from a prestellar core to a protostar is not well known, although the first hydrostatic core (FHSC) must be a pivotal step. NGC 1333 IRAS 4C is a potentially very young object, that we directly compare with the nearby Class 0 IRAS 4A and IRAS 4B. Observational constraints are provided by spectral imaging from the JCMT Spectral Legacy Survey (330-373 GHz) and continuum and line observations from CARMA. We present integrated intensity and velocity maps of several species, including CO, H2CO and CH3OH. The velocity of an observed outflow, the degree of CO depletion, the deuteration of DCO+/HCO+ and gas kinetic temperatures are observational signatures that we present. We report differences between the three sources in four aspects: a) the kinetic temperature is much lower towards IRAS 4C, b) the line profiles of the detected species show strong outflow activity towards IRAS 4A and IRAS 4B but not towards IRAS 4C, c) the HCN/HNC is < 1 towards IRAS 4C, which confirms the cold nature of the source, d) the degree of CO depletion and the deuteration are the lowest towards the warmest of the sources, IRAS 4B. IRAS 4C seems to be in a different evolutionary state than the IRAS 4A and IRAS 4B sources. We can probably exclude the FHSC stage due to the relatively low Lsmm/Lbol (~6\%) and we investigate the earliest accretion phase of Class 0 stage and the transition between Class 0 to Class I. Our results do not show a consistent scenario for either case, with the major issue being the absence of outflow activity and the cold nature of IRAS 4C. The number of FHSC candidates in Perseus is ~10 times higher than current models predict, which suggests that the lifespan of these objects is greater than 1000 years, possibly due to an accretion rate lower than 4x10^-5 msun/yr.
description: 19 pages, 18 figures, 3 tables; Accepted for publication in A&A
title: "Lomonosov" satellite-space observatory to study extreme phenomena in space
Creators: name: Sadovnichii, V. A.
name: Panasyuk, M. I.
name: Amelyushkin, A. M.
name: Benghin, V. V.
name: Garipov, G. K.
name: Kalegaev, V. V.
name: Klimov, P. A.
name: Khrenov, B. A.
name: Petrov, V. L.
name: Sharakin, S. A.
name: Shirokov, A. V.
name: Svertilov, S. I.
name: Zotov, M. Y.
name: Yashin, I. V.
name: Gorbovskoy, E. S.
name: Lipunov, V. M.
name: Park, I. H.
name: Lee, J.
name: Jeong, S.
name: Kim, M. B.
name: Jeong, H. M.
name: Shprits, Yuri Y.
name: Angelopoulos, V.
name: Russell, C. T.
name: Runov, A.
name: Turner, D.
name: Strangeway, R. J.
name: Caron, R.
name: Biktemerova, S.
name: Grinyuk, A.
name: Lavrova, M.
name: Tkachev, L.
name: Tkachenko, A.
name: Martinez, O.
name: Salazar, H.
name: Ponce, E.
Publisher: name: Universität Potsdam
Year: 2020

description: The "Lomonosov" space project is lead by Lomonosov Moscow State University in collaboration with the following key partners: Joint Institute for Nuclear Research, Russia, University of California, Los Angeles (USA), University of Pueblo (Mexico), Sungkyunkwan University (Republic of Korea) and with Russian space industry organi-zations to study some of extreme phenomena in space related to astrophysics, astroparticle physics, space physics, and space biology. The primary goals of this experiment are to study: -Ultra-high energy cosmic rays (UHECR) in the energy range of the Greizen-ZatsepinKuzmin (GZK) cutoff; -Ultraviolet (UV) transient luminous events in the upper atmosphere; -Multi-wavelength study of gamma-ray bursts in visible, UV, gamma, and X-rays; -Energetic trapped and precipitated radiation (electrons and protons) at low-Earth orbit (LEO) in connection with global geomagnetic disturbances; -Multicomponent radiation doses along the orbit of spacecraft under different geomagnetic conditions and testing of space segments of optical observations of space-debris and other space objects; -Instrumental vestibular-sensor conflict of zero-gravity phenomena during space flight. This paper is directed towards the general description of both scientific goals of the project and scientific equipment on board the satellite. The following papers of this issue are devoted to detailed descriptions of scientific instruments.
description: Postprints der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe, 959