cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The Perplexing Middlemen: Private Employment Agencies in the Web of Lives of Seasonal Workers in Early Twentieth Century America
Creators: name: Tian, Zhengying
Publisher: name: University of Chicago
Year: 2023

description: This research project examines the relationship between seasonal migrant workers and private employment agencies in the United States in the early twentieth century. It cites sociologists’ studies, government reports on the casual labor market, newspapers, and documents from labor organizations such as Industrial Workers of the World. This thesis challenges the dominant historical narratives of private employment agencies as exploitative by arguing that they were effective labor institutions, thanks to their integral engagement in seasonal workers’ everyday lives. Private employment agencies were unique in the precarious labor market due to their physical accessibility, their relationship with other services used by seasonal workers, and their alignment with seasonal workers’ code of conduct. Employers motivated intermediary labor institutions to participate in seasonal workers’ everyday lives as well. However, private employment agencies’ engagement in the web of lives fueled hostility and collective action against themselves. Recognizing the significance of these agencies’ social function, labor organizations countered their abuses by intervening and restructuring the space of everyday lives. The research findings of this thesis shed light upon the impact of social lives on decisions in the precarious labor market.
Real structure of lattice matched GaAs-Fe3Si core-shell nanowires
Creators: name: Jenichen, Bernd
name: Hilse, Maria
name: Herfort, Jens
name: Trampert, Achim
Publisher: name: arXiv
Year: 2014
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: GaAs nanowires and GaAs-Fe3Si core-shell nanowire structures were grown by molecular-beam epitaxy on oxidized Si(111) substrates and characterized by transmission electron microscopy (TEM) and X-ray diffraction (XRD). Ga droplets were formed on the oxide surface, and the semiconducting GaAs nanowires grew epitaxially via the vapor-liquid-solid mechanism as single-crystals from holes in the oxide film. We observed two stages of growth of the GaAs nanowires, first the regular growth and second the residual growth after the Ga supply was finished. The magnetic Fe3Si shells were deposited in an As-free chamber. They completely cover the GaAs cores although they consist of small grains. High-resolution TEM micrographs depict the differently oriented grains in the Fe3Si shells. Selected area diffraction of electrons and XRD gave further evidence that the shells are textured and not single crystals. Facetting of the shells was observed, which lead to thickness inhomogeneities of the shells.
description: 15 pages, 8 figures
Sistema de procesamiento y graficación de datos estratigráficos /
Creators: name: Victorio Cuéllar, Gonzalo Israel
Publisher: name: Universidad Autónoma de Baja California.
Year: 2022
Subjects: subject: Procesamiento electrónico de datos Geología||Gráficos por computadora Geología||SIPGRADE||Ingeniero en computación Tésis
subject: TK7882 .S65 V52 2003

description: Apoyándose en la ingeniería de software se desarrolló una aplicación denominada Sistema de Procesamiento y Graficacion de Datos Estratigráficos (SIPGRADE), capaz de facilitar el trabajo llevado a cabo por los investigadores y demás personal que realiza estudios estratigráficos (estudios de las rocas formadas en capas, que se analizan con base a la información obtenida en perforaciones de pozos)
An exotic zoo of diffeomorphism groups on $\mathbb R^n$
Creators: name: Kriegl, Andreas
name: Michor, Peter W.
name: Rainer, Armin
Publisher: name: arXiv
Year: 2014
Subjects: subject: Differential Geometry (math.DG)
subject: Analysis of PDEs (math.AP)
subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 26E10, 46A17, 46E50, 46F05, 58B10, 58B25, 58C25, 58D05, 58D15, 35Q31

description: Let $C^{[M]}$ be a (local) Denjoy-Carleman class of Beurling or Roumieu type, where the weight sequence $M=(M_k)$ is log-convex and has moderate growth. We prove that the groups ${\operatorname{Diff}}\mathcal{B}^{[M]}(\mathbb{R}^n)$, ${\operatorname{Diff}}W^{[M],p}(\mathbb{R}^n)$, ${\operatorname{Diff}}{\mathcal{S}}{}_{[L]}^{[M]}(\mathbb{R}^n)$, and ${\operatorname{Diff}}\mathcal{D}^{[M]}(\mathbb{R}^n)$ of $C^{[M]}$-diffeomorphisms on $\mathbb{R}^n$ which differ from the identity by a mapping in $\mathcal{B}^{[M]}$ (global Denjoy--Carleman), $W^{[M],p}$ (Sobolev-Denjoy-Carleman), ${\mathcal{S}}{}_{[L]}^{[M]}$ (Gelfand--Shilov), or $\mathcal{D}^{[M]}$ (Denjoy-Carleman with compact support) are $C^{[M]}$-regular Lie groups. As an application we use the $R$-transform to show that the Hunter-Saxton PDE on the real line is well-posed in any of the classes $W^{[M],1}$, ${\mathcal{S}}{}_{[L]}^{[M]}$, and $\mathcal{D}^{[M]}$. Here we find some surprising groups with continuous left translations and $C^{[M]}$ right translations (called half-Lie groups), which, however, also admit $R$-transforms.
description: 45 pages; some small corrections done
Supplementary Material for: Using Design Thinking to Break Social Barriers: an Experience Report with Former Inmates
Creators: name: ESVirtual
Publisher: name: Zenodo
Year: 2022
Subjects: Design Thinking
Requirements Elicitation
Techniques
Former Inmates
Interviews
Mobile Application

description: Context and motivation: Design Thinking techniques have been widely used in the elicitation of software requirements, since such methods obtain satisfying results when applied to understand the necessities of both stakeholders and end-users. However, there is a lack of evidence on their effectiveness when applied to populations considered vulnerable. Question/problem: What are the implications of using Design Thinking techniques to elicit requirements in a community of former inmates - and what would be the benefits of and challenges in this deployment? Principal ideas/results: in this paper, we report our experience on using Design Thinking for Requirements Elicitation of a mobile application, customized for a vulnerable population: the former inmates of the Brazilian Prison System and their families. Research approach and methodology: Techniques such as Brainstorming, Stakeholder Mapping, Personas Creation, Rapid Ethnography, and Interviews were used to obtain relevant data. Furthermore, during the development process, several prototypes were created.
 Contribution: The use of these techniques generated important contributions for the development of an uncommon application that aims to help the reintegration process of former inmates into society.
 The results obtained validate the initial hypothesis that such techniques, even when applied to a sensitive context such as this one, assist in the development of a product that meets the needs of the end-users by creating a higher quality product. Limitations of results:
 The main limitation of the research was the lack of access to low literacy end-users and/or former inmates without previous experience using mobile devices.
Exact interior solutions in (2 + 1) dimensional spacetime
Creators: name: Rahaman, Farook
name: Bhar, Piyali
name: Biswas, Ritabrata
name: Usmani, A. A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We provide a new class of exact solutions for the interior in (2 + 1) dimensional spacetime. The solutions obtained for the perfect fluid model both with and without cosmological constant ($Λ$) are found to be regular and singularity free. It assume very simple analytical forms that help us to study the various physical properties of the configuration. Solutions without $Λ$ are found to be physically acceptable.
description: Matched published version. Eur. Phys. J. C (2014) 74:2845
Towards socially-competent and culturally-adaptive artificial agents Expressive order, interactional disruptions and recovery strategies
Creators: name: Bassetti, Chiara
name: Blanzieri, Enrico
name: Borgo, Stefano
name: Marangon, Sofia
Publisher: name: arXiv
Year: 2023
Subjects: subject: Artificial Intelligence (cs.AI)
subject: Computers and Society (cs.CY)
subject: Human-Computer Interaction (cs.HC)
subject: Multiagent Systems (cs.MA)
subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: The development of artificial agents for social interaction pushes to enrich robots with social skills and knowledge about (local) social norms. One possibility is to distinguish the expressive and the functional orders during a human-robot interaction. The overarching aim of this work is to set a framework to make the artificial agent socially-competent beyond dyadic interaction-interaction in varying multi-party social situations-and beyond individual-based user personalization, thereby enlarging the current conception of "culturally-adaptive". The core idea is to provide the artificial agent with the capability to handle different kinds of interactional disruptions, and associated recovery strategies, in microsociology. The result is obtained by classifying functional and social disruptions, and by investigating the requirements a robot's architecture should satisfy to exploit such knowledge. The paper also highlights how this level of competence is achieved by focusing on just three dimensions: (i) social capability, (ii) relational role, and (iii) proximity, leaving aside the further complexity of full-fledged human-human interactions. Without going into technical aspects, End-to-end Data-driven Architectures and Modular Architectures are discussed to evaluate the degree to which they can exploit this new set of social and cultural knowledge. Finally, a list of general requirements for such agents is proposed.
SLUG - Stochastically Lighting Up Galaxies. II: Quantifying the Effects of Stochasticity on Star Formation Rate Indicators
Creators: name: da Silva, Robert L.
name: Fumagalli, Michele
name: Krumholz, Mark R.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The integrated light of a stellar population, measured through photometric filters that are sensitive to the presence of young stars, is often used to infer the star formation rate (SFR) for that population. However, these techniques rely on an assumption that star formation is a continuous process, whereas in reality stars form in discrete spatially- and temporally-correlated structures. This discreteness causes the light output to undergo significant time-dependent fluctuations, which, if not accounted for, introduce systematic errors in the inferred SFRs due to the intrinsic distribution of luminosities at any fix SFR. We use SLUG, a code that Stochastically Lights Up Galaxies, to simulate galaxies undergoing stochastic star formation. We then use these simulations to present a quantitative analysis of these effects and provide tools for calculating probability distribution functions of SFRs given a set of observations. We show that, depending on the SFR tracer used, stochastic fluctuations can produce non-trivial errors at SFRs as high as 1 M/yr, and biases >0.5 dex at the lowest SFRs. We emphasize that due to the stochastic behavior of blue SFR tracers, one cannot assign a deterministic single value to the SFR of an individual galaxy, but we suggest methods by which future analyses that rely on integrated-light indicators can properly account for these stochastic effects.
description: 13 pages, 8 figures. To appear in MNRAS
AGINFRA PLUS D8.3 - AGINFRA Future Science Recommendations
Creators: name: Manouselis, Nikos
Publisher: name: Zenodo
Year: 2020
Subjects: white-paper; e-infrastructure; Virtual Research Environments; agriculture; food

description: This document serves as a white paper, which describes the AGINFRA PLUS vision of a next-generation community driven web-based research infrastructure, as well as present and future application scenarios that can be envisaged from experiences with the piloted AGINFRA PLUS user communities and provides recommendations that aim to inform the roadmap for developing AGINFRA PLUS infrastructure further. The initial version of this white paper has been prepared with contributions from all partners and was submitted to the EC on M25. In order to further enhance the positioning of the project in the digital science ecosystem, Agroknow worked on a next version of this deliverable that has been organised as an edited volume. A variety of stakeholders, including all project partners, were invited to contribute to this volume titled “Digital Science Recommendations for Food & Agriculture”. External contributors included strategic digital infrastructure initiatives (such as OpenAIRE, the FNH-RI Research Infrastructure for Food,
 Nutrition and Health, and the METROFOOD Research Infrastructure for promoting metrology in food and nutrition), as well as international stakeholders (such as the University of Guelph, Canada; and the Chinese Academy of Agricultural Sciences). The full text of the volume can be found in Annex A of the present document.
Barrow entropic Quintessence and Dilation dark energy Models with Generalized HDE cut-off
Creators: name: Garg, Priyanka
name: Bhardwaj, Vinod Kumar
name: Pradhan, Anirudh
Publisher: name: arXiv
Year: 2023
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In the present work, we have analyzed the behaviors of extension of generalized Barrow holographic dark energy(`BHDE'). A ``generalized BHDE model based on the particle and the future horizon using infrared cut-off" was proposed by Nojiri et al. (2022). In this work, we have reviewed the generalized BHDE extension under the assumption of a generalized HDE cut-off. Using a scale factor of the form $a = k t^m$, the dynamics of the cosmos have been discussed through graphic demonstration. By applying the ``open-source emcee Python package", the values of the free parameters $k$ and $m$ are estimated on 57 OHD points by the Markov Chain Monte Carlo (MCMC) technique. We have examined the behavior of the equation of state (EoS) parameter, $( p_{de})$, and dark energy density $(ρ_{de})$. We have also discussed the equivalence of holographic dark energy (DE) with the Barrow entropic DE and its extension. Also, we have explained quintessence and dilation dark energy models in the context of Barrow entropic DE.
description: 18 pages, 9 figures
Barnett's resolution of the Minkowski – Abraham dilemma holds, no 4-vector issue
Creators: name: Maes, Stephane H.
Publisher: name: Zenodo
Year: 2023
Subjects: Light
Photon
Mikowski
Abraham
Momentum
Energy
4-vector
relativity
multi-fold theory
time arrow
accelerated wave

description: There has been a century long controversy about the momentum density of photons in a medium, with two models getting experimental confirmation: the Minkowski model and the Abraham model. The latter being experimentations targeting the particle aspects of light, while the former focuses on its wave aspects. 
In 2010, Barnett proposed a simple resolution to the dilemma: both approaches are correct models, but one needs to distinguish what the momentum densities represent. The model is elegant and consistent with Maxwell's equations in a medium. 
Subsequently, Changbiao Wang published two papers arguing that the reasoning is incorrect because the Abraham light momentum in the medium would not be a 4-vector. This paper shows that such a view is incorrect: the author incorrectly sets the kinetic momentum density of the medium to zero.   
Finally, we point out another paper that explains that the controversy is a relativistic effect between the reference frame in proper time for the wave and external observers.
description: Cite as: Stephane H Maes, (2023), "Barnett's resolution of the Minkowski – Abraham dilemma holds, no 4-vector issue", https://zenodo.org/records/10071847, https://shmaes.wordpress.com/2023/08/11/barnetts-resolution-of-the-minkowski-abraham-dilemma-holds-no-4-vector-issue/, August 13, 2023
AGINFRA PLUS D8.3 - AGINFRA Future Science Recommendations
Creators: name: Manouselis, Nikos
name: Zervas, Panagiotis
name: Lokers, Rob
name: Knapen, Rob
name: Boizet, Alice
name: Filter, Matthias
Publisher: name: Zenodo
Year: 2019
Subjects: white-paper; e-infrastructure; Virtual Research Environments; agriculture; food

description: This document serves as a white paper, which describes the AGINFRA+ vision of a next-generation community driven web-based research infrastructure, as well as present and future application scenarios that can be envisaged from experiences with the piloted AGINFRA+ user communities and provides recommendations that aim to inform the roadmap for developing AGINFRA+ infrastructure further.

The document provides an overview of the involved user communities and their different user profiles, as well as the way to involve each community in the projects’ activities. It describes the objectives and the obstacles that each community had to overcome and provides all the necessary details regarding the special and indispensable aim that has been provided through the use of the AGINFRA+ Virtual Research Environments (VREs). Specific emphasis is provided to risks that the communities might face in the near future and to recommendations regarding how they should address these challenges based on the existing VREs.
Linear Resistivity from Non-Abelian Black Holes
Creators: name: Herzog, Christopher P.
name: Huang, Kuo-Wei
name: Vaz, Ricardo
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Starting with the holographic p-wave superconductor, we show how to obtain a finite DC conductivity through a non-abelian gauge transformation. The translational symmetry is preserved. We obtain phenomenological similarities with high temperature cuprate superconductors. Our results suggest that a lattice or impurities are not essential to produce a finite DC resistivity with a linear temperature dependence. An analogous field theory calculation for free fermions, presented in the appendix, indicates our results may be a special feature of strong interactions.
description: 27 pages, 12 figures; v4: An analogous field theory calculation added. Small changes to abstract, introduction, discussion and reference. To appear in JHEP
A Survey of mmWave-based Human Sensing: Technology, Platform and Applications
Creators: name: Zhang, Jia
name: Xi, Rui
name: He, Yuan
name: Sun, Yimiao
name: Guo, Xiuzhen
name: Wang, Weiguo
name: Na, Xin
name: Liu, Yunhao
name: Shi, Zhenguo
name: Gu, Tao
Publisher: name: arXiv
Year: 2023
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences
subject: C.2; J.3

description: With the rapid development of the Internet of Things (IoT) and the rise of 5G communication networks and automatic driving, millimeter wave (mmWave) sensing is emerging and starts impacting our life and workspace. mmWave sensing can sense humans and objects in a contactless way, providing fine-grained sensing ability. In the past few years, many mmWave sensing techniques have been proposed and applied in various human sensing applications (e.g., human localization, gesture recognition, and vital monitoring). We discover the need of a comprehensive survey to summarize the technology, platforms and applications of mmWave-based human sensing. In this survey, we first present the mmWave hardware platforms and some key techniques of mmWave sensing. We then provide a comprehensive review of existing mmWave-based human sensing works. Specifically, we divide existing works into four categories according to the sensing granularity: human tracking and localization, motion recognition, biometric measurement and human imaging. Finally, we discuss the potential research challenges and present future directions in this area.
description: 30 pages, 17 figures, IEEE Survey & Tutorial
On properties of Karlsson Hadamards and sets of Mutually Unbiased Bases in dimension six
Creators: name: Maxwell, Andrew
name: Brierley, Stephen
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: Combinatorics (math.CO)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: The complete classification of all 6x6 complex Hadamard matrices is an open problem. The 3-parameter Karlsson family encapsulates all Hadamards that have been parametrised explicitly. We prove that such matrices satisfy a non-trivial constraint conjectured to hold for (almost) all 6x6 Hadamard matrices. Our result imposes additional conditions in the linear programming approach to the mutually unbiased bases problem recently proposed by Matolcsi et al. Unfortunately running the linear programs we were unable to conclude that a complete set of mutually unbiased bases cannot be constructed from Karlsson Hadamards alone.
description: As published version
Conceptual Design of In-Vessel Divertor Coils in DTT
Creators: name: Acampora, Emilio
name: Albanese, Raffaele
name: Ambrosino, Roberto
name: Castaldo, Antonio
name: Innocente, Paolo
name: Loschiavo, Vincenzo Paolo
Publisher: name: arXiv
Year: 2023
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: The Divertor Tokamak Test (DTT) facility will be equipped with in-vessel divertor coils able to locally modify the flux surfaces in the divertor region. When the first DTT divertor had not been selected, four in-vessel divertor coils were considered, with 10 turns each, fed by independent 4-quadrant SCR (thyristor) 0.5 kV - 5 kA - power supplies. This configuration was able to meet the design criteria in terms of requested performance and operational constraints, but one of the coils is not compatible with the geometry of the first DTT divertor, and another coil, scarcely efficient, can be removed. This paper discusses the design criteria, illustrates the possible revised layout, and illustrates the performance that can be achieved.
On limit points of the sequence of normalized prime gaps
Creators: name: Banks, William D.
name: Freiberg, Tristan
name: Maynard, James
Publisher: name: arXiv
Year: 2014
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11N05 (Primary), 11N36 (Secondary)

description: Let $p_n$ denote the $n$th smallest prime number, and let $\boldsymbol{L}$ denote the set of limit points of the sequence $\{(p_{n+1} - p_n)/\log p_n\}_{n = 1}^{\infty}$ of normalized differences between consecutive primes. We show that for $k = 9$ and for any sequence of $k$ nonnegative real numbers $β_1 \le β_2 \le ... \le β_k$, at least one of the numbers $β_j - β_i$ ($1 \le i < j \le k$) belongs to $\boldsymbol{L}$. It follows at least $12.5%$ of all nonnegative real numbers belong to $\boldsymbol{L}$.
description: Revised and improved
Continuous Mott Transition in a Two-Dimensional Hubbard Model
Creators: name: Yanagi, Yuki
name: Ueda, Kazuo
Publisher: name: arXiv
Year: 2014
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We investigate nonmagnetic metal-insulator transition in the 1/5-depleted square lattice Hubbard model at half-filling within the 8-site cellular dynamical mean field theory. We find that a metal-insulator transition without any signatures of the first order transition, a continuous Mott transition, takes place in a certain range of parameters. The nature of the continuous Mott transition is nothing but a Lifshitz transition driven by the on-site Coulomb interaction. The renormalized matrix elements of hoppings and the spin-spin correlation functions reveal that physics of this transition is strong enhancement of the dimerization due to the non-local effects of electron-electron interaction.
description: 6 pages, 6 figures, text and figures have been revised, published in Phys. Rev. B
title: kunsttexte.de - Journal für Kunst- und Bildgeschichte, Nr. 4 (2022): Kunsttexte
title: Kunsttexte
titleType: AlternativeTitle
Creators: name: Kunsttexte.De-Journal Für Kunst- Und Bildgeschichte
Publisher: name: kunsttexte.de - Journal für Kunst- und Bildgeschichte
Year: 2022

description: Visual Music and Beyond. Musikalisierung und Visualisierung in den Künsten
description: Sebastian Borkhardt: „Der Russe Kandinsky“. Zur Bedeutung der russischen Herkunft Vasilij Kandinskijs für seine Rezeption in Deutschland, 1912–1945...1-3 Visualisierung von Songs...1-9 Paragone um Zeit und Raum...1-10 Anxiety and The Real Thing...1-18 „To see music express itself in animated notation“...1-17 Zwischen bildender Kunst und Musik(notation)...1-14 Augenmusik Today...1-15 Visual Music as Abstract Moving Image...1-6 Editorial...1-3
Evaluación y caracterización de una [alfa]-galatosidasa producida por Bacillus spp. para su empleo como aditivo alimenticio /
Creators: name: Arámburo Guerrero, Jorge Luis
Publisher: name: Universidad Autónoma de Baja California.
Year: 2022
Subjects: subject: Bacillus spp||Bacillus Análisis Enzimas||Bacterias Análisis Enzimas||Biología||Tesis
subject: QR82.B3 B73 2004

description: Los altos costos de la alimentación en el cultivo de camarón han generado una búsqueda de fuentes alimenticias alternas, tanto marinas como terrestres, que disminuyan los costos de producción.
Efficiency of cellular information processing
Creators: name: Barato, Andre C.
name: Hartich, David
name: Seifert, Udo
Publisher: name: arXiv
Year: 2014
Subjects: subject: Biological Physics (physics.bio-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Subcellular Processes (q-bio.SC)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: We show that a rate of conditional Shannon entropy reduction, characterizing the learning of an internal process about an external process, is bounded by the thermodynamic entropy production. This approach allows for the definition of an informational efficiency that can be used to study cellular information processing. We analyze three models of increasing complexity inspired by the E. coli sensory network, where the external process is an external ligand concentration jumping between two values. We start with a simple model for which ATP must be consumed so that a protein inside the cell can learn about the external concentration. With a second model for a single receptor we show that the rate at which the receptor learns about the external environment can be nonzero even without any dissipation inside the cell since chemical work done by the external process compensates for this learning rate. The third model is more complete, also containing adaptation. For this model we show inter alia that a bacterium in an environment that changes at a very slow time-scale is quite inefficient, dissipating much more than it learns. Using the concept of a coarse-grained learning rate, we show for the model with adaptation that while the activity learns about the external signal the option of changing the methylation level increases the concentration range for which the learning rate is substantial.
description: 18 pages, 7 figures
Thermal and radiative AGN feedback have a limited impact on star formation in high-redshift galaxies
Creators: name: Roos, Orianne
name: Juneau, Stéphanie
name: Bournaud, Frédéric
name: Gabor, Jared M.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The effects of Active Galactic Nuclei (AGNs) on their host-galaxies depend on the coupling between the injected energy and the interstellar medium (ISM). Here, we model and quantify the impact of long-range AGN ionizing radiation -- in addition to the often considered small-scale energy deposition -- on the physical state of the multi-phase ISM of the host-galaxy, and on its total Star Formation Rate (SFR). We formulate an AGN Spectral Energy Distribution matched with observations, which we use with the radiative transfer (RT) code Cloudy to compute AGN ionization in a simulated high-redshift disk galaxy. We use a high-resolution ($\sim6$ pc) simulation including standard thermal AGN feedback and calculate RT in post-processing. Surprisingly, while these models produce significant AGN-driven outflows, we find that AGN ionizing radiation and heating reduce the SFR by a few percent at most for a quasar luminosity ($L_{bol}=10^{46.5}$ erg s$^{-1}$). Although the circum-galactic gaseous halo can be kept almost entirely ionized by the AGN, most star-forming clouds ($n\gtrsim10^{2-3}$ cm$^{-3}$) and even the reservoirs of cool atomic gas ($n\sim0.3-10$ cm$^{-3}$) -- which are the sites of future star formation (100 - 200 Myrs), are generally too dense to be significantly affected. Our analysis ignores any absorption from a putative torus, making our results upper limits on the effects of ionizing radiation. Therefore, while the AGN-driven outflows can remove substantial amounts of gas in the long term, the impact of AGN feedback on the star formation efficiency in the interstellar gas in high-redshift galaxies is marginal, even when long-range radiative effects are accounted for.
description: Accepted for publication in the Astrophysical Journal (11/06/2014). Minor changes wrt. v2
Effective Field Theory of Cosmic Acceleration: an implementation in CAMB
Creators: name: Hu, Bin
name: Raveri, Marco
name: Frusciante, Noemi
name: Silvestri, Alessandra
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We implement the effective field theory (EFT) approach to dark energy and modified gravity in the public Einstein-Boltzmann solver CAMB. The resulting code, which we dub EFTCAMB, is a powerful and versatile tool that can be used for several objectives. It can be employed to evolve the full dynamics of linear scalar perturbations in any given single field dark energy or modified gravity model, once the latter is mapped into the EFT formalism. It offers a numerical implementation of EFT as a model-independent framework to test gravity on cosmological scales. EFTCAMB has a built-in check for the fulfillment of general stability conditions such as the absence of ghost and superluminal propagation of perturbations. It handles phantom-divide crossing models and does not contain any quasi-static approximation, but rather evolves the full dynamics of perturbations on linear scales. As we will show, the latter is an important feature in view of the accuracy and scale range of upcoming surveys. We show the reliability and applicability of our code by evolving the dynamics of linear perturbations and extracting predictions for power spectra in several models. In particular we perform a thorough analysis of f(R) theories, comparing our outputs with those of an existing code for LCDM backgrounds, and finding an agreement that can reach 0.1% for models with a Compton wavelength consistent with current cosmological data. We then showcase the flexibility of our code studying two different scenarios. First we produce new results for designer f(R) models with a time-varying dark energy equation of state. Second, we extract predictions for linear observables in some parametrized EFT models with a phantom-divide crossing equation of state for dark energy.
description: 23 pages, 6 figures. Matching version accepted by PRD. Minor changes in the appendix
Stretch sensors for measuring knee kinematics in sports
Creators: name: Adesida, Yewande Adebola
Publisher: name: Imperial College London
Year: 2023

description: The popularity of wearable technology in sport has increased, due to its ability to provide unobtrusive monitoring of athletes. This technology has been used to objectively measure kinetic and kinematic variables, with the aim of preventing injury, maximising athletic performance and classifying the skill level of athletes, all of which can influence training and coaching practices. Wearable technologies overcome the limitations of motion capture systems which are limited in their capture volume, enabling the collection of data in-field, during training and competition. Inertial sensors are a common form of technology used in these environments however, their high-cost and complex calibration due to multiple sensor integration can make them prohibitive for widespread use. This thesis focuses on the development of a strain sensor that can be used to measure knee range of motion in sports, specifically rowing and cycling, as a potential low-cost, lightweight alternative to inertial sensors which can also be integrated into clothing, making them more discreet. A systematic review highlighted the lack of alternate technologies to inertial sensors such as strain sensors, as well as the limited use of wearable technologies in both rowing and cycling. Strain sensors were fabricated from a carbon nanotube-natural rubber composite using solvent exchange techniques and employed a piezoresistive sensing mechanism. These were then characterised using mechanical testing, to determine their electrical properties under cyclical strain. The strain sensors displayed hysteretic behaviour, but were durable, withstanding over 4500 strain cycles. Statistical analysis indicated that over 60% of the tests conducted had good intra-test variability with regards to the resistance response range in each strain cycle and sensor response deviating by less than 10% at strain rates below 100 mm/min and less than 20% at a strain rate of 350 mm/min. These sensors were integrated into a wearable sensor system and tested on rowing and cycling cohorts consisting of ten athletes each, to assess the translational use of the strain sensor. This preliminary testing indicated that strain sensors were able to track the motion of the knee during the rowing stroke and cycling pedalling motion, when compared to the output of a motion capture system. Perspectives of participants on the wearable system were collected, which indicated their desire for a system that they could use in their sport, and they considered the translation of this system for real-life use with further development to improve comfort of the system and consistency of the sensor response. The strain sensors developed in this project, when integrated into a wearable sensor system, have the potential to provide an unobtrusive method of measuring knee kinematics, helping athletes, coaches and other support staff make technical changes that can reduce injury risk and improve performance.
Bioenergética de juveniles de la langosta australiana de quelas rojas Cherax quadricarinatus (Von Martens, 1968) alimentados a la temperatura preferida con dos dietas artificiales /
Creators: name: Meza Castillo, Víctor Ernesto
Publisher: name: Universidad Autónoma de Baja California.
Year: 2022
Subjects: subject: Langosta australiana Cultivo||Camarones, Cultivo de||Oceanología Biología||Tesis
subject: SH380 M49 2004

description: La langosta australiana de quelas rojas Cherax quadricarinatus ha despertado interés acuícola a nivel internacional en la última década, debido a su alta tasa de crecimiento y talla de cosecha.
Learning Graph Neural Networks with Limited Information
Creators: name: Liu, Yixin
Publisher: name: Monash University
Year: 2024
Subjects: classificationCode: 461103
subject: Deep learning
classificationCode: 461104
subject: Neural networks

description: Graph-structured data is vital for modeling complex systems, and graph neural networks (GNNs) have become essential in graph machine learning for applications like recommendation systems and drug discovery. However, GNNs require rich data, often lacking in practical scenarios due to collection and annotation difficulties. This thesis aims to enhance GNNs' capabilities with limited information. It introduces novel GNN models for handling insufficient data and presents solutions for real-world applications, such as anomaly detection and out-of-distribution detection. This research advances GNN robustness and applicability, fostering the development of more powerful graph machine learning models.
Fine-grained EPR-steering inequalities
Creators: name: Pramanik, Tanumoy
name: Kaplan, Marc
name: Majumdar, Archan S
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We derive a new steering inequality based on a fine-grained uncertainty relation to capture EPR-steering for bipartite systems. Our steering inequality improves over previously known ones since it can experimentally detect all steerable two-qubit Werner state with only two measurement settings on each side. According to our inequality, pure entangle states are maximally steerable. Moreover, by slightly changing the setting, we can express the amount of violation of our inequality as a function of their violation of the CHSH inequality. Finally, we prove that the amount of violation of our steering inequality is, up to a constant factor, a lower bound on the key rate of a one-sided device independent quantum key distribution protocol secure against individual attacks. To show this result, we first derive a monogamy relation for our steering inequality.
description: 5 pages, Accepted for publication as a Rapid Communication in Physical Review A
MetaCast: A Self-Driven Metaverse Announcer Architecture Based on Quality of Experience Evaluation Model
Creators: name: Lin, Zhonghao
name: Duan, Haihan
name: Li, Jiaye
name: Sun, Xinyao
name: Cai, Wei
Publisher: name: arXiv
Year: 2023
Subjects: subject: Multimedia (cs.MM)
subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: Metaverse provides users with a novel experience through immersive multimedia technologies. Along with the rapid user growth, numerous events bursting in the metaverse necessitate an announcer to help catch and monitor ongoing events. However, systems on the market primarily serve for esports competitions and rely on human directors, making it challenging to provide 24-hour delivery in the metaverse persistent world. To fill the blank, we proposed a three-stage architecture for metaverse announcers, which is designed to identify events, position cameras, and blend between shots. Based on the architecture, we introduced a Metaverse Announcer User Experience (MAUE) model to identify the factors affecting the users' Quality of Experience (QoE) from a human-centered perspective. In addition, we implemented \textit{MetaCast}, a practical self-driven metaverse announcer in a university campus metaverse prototype, to conduct user studies for MAUE model. The experimental results have effectively achieved satisfactory announcer settings that align with the preferences of most users, encompassing parameters such as video transition rate, repetition rate, importance threshold value, and image composition.
The formation of CDM haloes II: collapse time and tides
Creators: name: Borzyszkowski, Mikolaj
name: Ludlow, Aaron D.
name: Porciani, Cristiano
Publisher: name: arXiv
Year: 2014
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We use two cosmological simulations of structure formation in the LambdaCDM scenario to study the evolutionary histories of dark-matter haloes and to characterize the Lagrangian regions from which they form. We focus on haloes identified at redshift z_id=0 and show that the classic ellipsoidal collapse model systematically overestimates their collapse times. If one imposes that halo collapse takes place at z_id, this model requires starting from a significantly lower linear density contrast than what is measured in the simulations at the locations of halo formation. We attempt to explain this discrepancy by testing two key assumptions of the model. First, we show that the tides felt by collapsing haloes due to the surrounding large-scale structure evolve non-linearly. Although this effect becomes increasingly important for low-mass haloes, accounting for it in the ellipsoidal collapse model only marginally improves the agreement with N-body simulations. Second, we track the time evolution of the physical volume occupied by forming haloes and show that, after turnaround, it generally stabilizes at a well-defined redshift, z_c>z_id, contrary to the basic assumption of extended Press-Schechter theory based on excursion sets. We discuss the implications of this result for understanding the origin of the mass-dependence and scatter in the linear threshold for halo formation. Finally, we show that, when tuned for collapse at z_c, a modified version of the ellipsoidal collapse model that also accounts for the triaxial nature of protohaloes predicts their linear density contrast in an unbiased way.
description: 15 pages, 11 figures, MNRAS in press
A Hidden Markov Model of atomic quantum jump dynamics in an optically probed cavity
Creators: name: Gammelmark, S.
name: Alt, W.
name: Kampschulte, T.
name: Meschede, D.
name: Molmer, K.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We analyze the quantum jumps of an atom interacting with a cavity field. The strong atom- field interaction makes the cavity transmission depend on the time dependent atomic state, and we present a Hidden Markov Model description of the atomic state dynamics which is conditioned in a Bayesian manner on the detected signal. We suggest that small variations in the observed signal may be due to spatial motion of the atom within the cavity, and we represent the atomic system by a number of hidden states to account for both the small variations and the internal state jump dynamics. In our theory, the atomic state is determined in a Bayesian manner from the measurement data, and we present an iterative protocol, which determines both the atomic state and the model parameters. As a new element in the treatment of observed quantum systems, we employ a Bayesian approach that conditions the atomic state at time t on the data acquired both before and after t and we show that the state assignment by this approach is more decisive than the usual conditional quantum states, based on only earlier measurement data.
description: 10 pages, figures. Published version
Dynamic development of public attitudes towards science policymaking
Creators: name: Okamura, Keisuke
Publisher: name: arXiv
Year: 2023
Subjects: subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: Understanding the heterogeneity of mechanisms that form public attitudes towards science and technology policymaking is essential to the establishment of an effective public engagement platform. Using the 2011 public opinion survey data from Japan (n = 6,136), I divided the general public into three categories: the Attentive public, who are willing to actively engage with science and technology policymaking dialogue; the Interested public, who have moderate interest in science and technology but rely on experts for policy decisions; and the Residual public, who have minimal interest in science and technology. On the basis of the results of multivariate regression analysis, I have identified several key predispositions towards science and technology and other socio-demographic characteristics that influence the shift of individuals from one category of the general public to another. The findings provide a foundation for understanding how to induce more accountable, evidence-based science and technology policymaking.
description: Main Text: 18 pages (4 figures); Supplementary Materials: 17 pages (3 figures)
Phase Transitions in Ferromagnetic Ising Models with spatially dependent magnetic fields
Creators: name: Bissacot, Rodrigo
name: Cassandro, Marzio
name: Cioletti, Leandro
name: Presutti, Errico
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mathematical Physics (math-ph)
subject: Probability (math.PR)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: In this paper we study the nearest neighbor Ising model with ferromagnetic interactions in the presence of a space dependent magnetic field which vanishes as $|x|^{-α}$, $α>0$, as $|x|\to \infty$. We prove that in dimensions $d\ge 2$ for all $β$ large enough if $α>1$ there is a phase transition while if $α<1$ there is a unique DLR state.
description: to appear in Communications in Mathematical Physics
Elements of Trust in Named-Data Networking
Creators: name: Ghali, Cesar
name: Tsudik, Gene
name: Uzun, Ersin
Publisher: name: arXiv
Year: 2014
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: In contrast to today's IP-based host-oriented Internet architecture, Information-Centric Networking (ICN) emphasizes content by making it directly addressable and routable. Named Data Networking (NDN) architecture is an instance of ICN that is being developed as a candidate next-generation Internet architecture. By opportunistically caching content within the network (in routers), NDN appears to be well-suited for large-scale content distribution and for meeting the needs of increasingly mobile and bandwidth-hungry applications that dominate today's Internet. One key feature of NDN is the requirement for each content object to be digitally signed by its producer. Thus, NDN should be, in principle, immune to distributing fake (aka "poisoned") content. However, in practice, this poses two challenges for detecting fake content in NDN routers: (1) overhead due to signature verification and certificate chain traversal, and (2) lack of trust context, i.e., determining which public keys are trusted to verify which content. Because of these issues, NDN does not force routers to verify content signatures, which makes the architecture susceptible to content poisoning attacks. This paper explores root causes of, and some cures for, content poisoning attacks in NDN. In the process, it becomes apparent that meaningful mitigation of content poisoning is contingent upon a network-layer trust management architecture, elements of which we construct while carefully justifying specific design choices. This work represents the initial effort towards comprehensive trust management for NDN.
description: 9 pages, 2 figures