cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Estimating Potential Infection Transmission Routes in Hospital Wards Using Wearable Proximity Sensors
Creators: name: Vanhems, Philippe
name: Barrat, Alain
name: Cattuto, Ciro
name: Pinton, Jean-François
name: Khanafer, Nagham
name: Régis, Corinne
name: Kim, Byeul-a
name: Comte, Brigitte
name: Voirin, Nicolas
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantitative Methods (q-bio.QM)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: Contacts between patients, patients and health care workers (HCWs) and among HCWs represent one of the important routes of transmission of hospital-acquired infections (HAI). A detailed description and quantification of contacts in hospitals provides key information for HAIs epidemiology and for the design and validation of control measures. We used wearable sensors to detect close-range interactions ("contacts") between individuals in the geriatric unit of a university hospital. Contact events were measured with a spatial resolution of about 1.5 meters and a temporal resolution of 20 seconds. The study included 46 HCWs and 29 patients and lasted for 4 days and 4 nights. 14037 contacts were recorded. The number and duration of contacts varied between mornings, afternoons and nights, and contact matrices describing the mixing patterns between HCW and patients were built for each time period. Contact patterns were qualitatively similar from one day to the next. 38% of the contacts occurred between pairs of HCWs and 6 HCWs accounted for 42% of all the contacts including at least one patient, suggesting a population of individuals who could potentially act as super-spreaders. Wearable sensors represent a novel tool for the measurement of contact patterns in hospitals. The collected data provides information on important aspects that impact the spreading patterns of infectious diseases, such as the strong heterogeneity of contact numbers and durations across individuals, the variability in the number of contacts during a day, and the fraction of repeated contacts across days. This variability is associated with a marked statistical stability of contact and mixing patterns across days. Our results highlight the need for such measurement efforts in order to correctly inform mathematical models of HAIs and use them to inform the design and evaluation of prevention strategies.
Quantum approximate optimization algorithm for qudit systems
Creators: name: Deller, Yannick
name: Schmitt, Sebastian
name: Lewenstein, Maciej
name: Lenk, Steve
name: Federer, Marika
name: Jendrzejewski, Fred
name: Hauke, Philipp
name: Kasper, Valentin
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: A frequent starting point of quantum computation platforms are two-state quantum systems, i.e., qubits. However, in the context of integer optimization problems, relevant to scheduling optimization and operations research, it is often more resource-efficient to employ quantum systems with more than two basis states, so-called qudits. Here, we discuss the quantum approximate optimization algorithm (QAOA) for qudit systems. We illustrate how the QAOA can be used to formulate a variety of integer optimization problems such as graph coloring problems or electric vehicle (EV) charging optimization. In addition, we comment on the implementation of constraints and describe three methods to include these into a quantum circuit of a QAOA by penalty contributions to the cost Hamiltonian, conditional gates using ancilla qubits, and a dynamical decoupling strategy. Finally, as a showcase of qudit-based QAOA, we present numerical results for a charging optimization problem mapped onto a max-$k$-graph coloring problem. Our work illustrates the flexibility of qudit systems to solve integer optimization problems.
description: updated text and figures
Disability is Not Inability: Grassroots Participatory Development and Collective Action in the Iganga District of Uganda
Creators: name: Alamillo, Daniel James
name: Diaz, Lilia
Publisher: name: Columbia University
Year: 2012
Subjects: Community development
People with disabilities
Ethnology
Regional planning
Social structure

description: Development planners continue to use mainstreaming as a way to include marginalized groups in the international development agenda.  However, grassroots programs are gaining increasing attention as they are proving to be more effective than top-down measures.  Furthermore, participatory programs allow individuals and communities to actively participate in their own development.  This paper analyzes how one particular community of people with disabilities in Uganda are actively playing a role in their own development, both through participatory programs and collective efforts.  This paper chronicles the implementation of participatory forms of development by people with disabilities (PWDs) in the Iganga district of Uganda. The paper could potentially lay the foundations for further research on the ability of local actors to create social change, or “development,” through their own actions. Participatory programs/models like these could be included in the international development agenda to allow people to become active in their own development.
"... und schuf sie als Mann und Weib" oder: Wie Geschlechter gemacht werden
Creators: name: Schott, Reinmar
Publisher: name: Werkstatt Schwule Theologie
Year: 1970

description: Werkstatt Schwule Theologie, Bd. 5 Nr. 1/2 (1998): Werkstatt Schwule Theologie, Band 5, Heft 1/2
Strengthening Local Governance Through Effective Waste Management: The “Sustainable Environmental Practices and Policies” Program in South Lebanon and the Bekaa Valley
Creators: name: McCornack, Andrew
Publisher: name: Columbia University
Year: 2012
Subjects: Water treatment plants
Sewage disposal plants
Sustainable development--Citizen participation
Sustainable development
Local government--Citizen participation
Refuse and refuse disposal
Sustainability

description: In response to the critical lack of solid waste and wastewater management facilities in towns and cities around Lebanon, the YMCA of Lebanon implemented the Sustainable Environmental Practices and Policies (SEPP) program from 2003 to 2009. The overall goal of the SEPP program was to improve environmental practices and policies for the management of both solid waste and wastewater in rural Lebanon. This included the Ain Baal solid waste treatment plant (SWTP) serving the city of Tyre and nine wastewater treatment plants in municipalities in southern and central areas of the nation. The project built the capacity of local governments, and it ensured the use of reliable, low cost, low maintenance technologies that improve long-term sustainability. The project attests to the hard work of national civil society organizations to improve environmental practices and increase the accountability of local governments. This project has helped reduce tensions between communities and foster more democratic participation at the local level.
Letter from Barbara Hepworth to Herbert Read, December 30, 1965
Creators: name: Hepworth, Barbara, 1903-1975
Publisher: name: University of Victoria Libraries
Year: 2023
Subjects: subject: Hepworth, Barbara, 1903-1975
valueUri: http://id.worldcat.org/fast/1898202
subject: Read, Herbert, 1893-1968
valueUri: http://id.worldcat.org/fast/1754386
subject: Authors, English--Correspondence
valueUri: http://id.worldcat.org/fast/821953
subject: Authors
valueUri: http://id.worldcat.org/fast/821688
subject: Women artists
valueUri: http://id.worldcat.org/fast/1177159
subject: Authors, English
valueUri: http://id.worldcat.org/fast/821945
subject: Artists--Correspondence
valueUri: http://id.worldcat.org/fast/817571
subject: Art historians
valueUri: http://id.worldcat.org/fast/815554
subject: Art movements
valueUri: http://id.worldcat.org/fast/815613
subject: Artists
valueUri: http://id.worldcat.org/fast/817559
subject: Poets
valueUri: http://id.worldcat.org/fast/1067778
subject: Poets, English
valueUri: http://id.worldcat.org/fast/1067870

description: Part of a collection of letters to Sir Herbert Read from Dame Barbara Hepworth (English artist and sculptor) held in the Herbert Read archive at the University of Leeds, UK. The letters span the time period of 1965 to 1968, and discuss art, the art world and their personal lives. Hepworth thanks Read for his foreword for her forthcoming exhibition, and is pleased at honours he has received. She writes about her garden and mentions her new Dual Form sculpture.
Pure Collective Precession Motion of High-Spin Torus Isomer
Creators: name: Ichikawa, T.
name: Matsuyanagi, K.
name: Maruhn, J. A.
name: Itagaki, N.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We investigate the precession motion of the exotic torus configuration in high-spin excited states of $^{40}$Ca. For this aim, we use the three-dimensional time-dependent Hartree-Fock (TDHF) method. Although the high-spin torus isomer is a unique quantum object characterized by the alignment of angular momenta of independent single-particle motions, we find that the obtained moment of inertia for rotations about an axis perpendicular to the symmetry axis is close to the rigid-body value. We also analyze the microscopic structure of the precession motion using the random-phase approximation (RPA) method for high-spin states. In the RPA calculation, the precession motion of the torus isomer is generated by coherent superposition of many one-particle-one-hole excitations across the sloping Fermi surface that strongly violates the time-reversal symmetry. By comparing results of the TDHF and the RPA calculations, we find that the precession motion obtained by the TDHF calculation is a pure collective motion well decoupled from other collective modes.
Learning to design without prior data: Discovering generalizable design strategies using deep learning and tree search
Creators: name: Raina, Ayush
name: Cagan, Jonathan
name: McComb, Christopher
Publisher: name: arXiv
Year: 2022
Subjects: subject: Machine Learning (cs.LG)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Building an AI agent that can design on its own has been a goal since the 1980s. Recently, deep learning has shown the ability to learn from large-scale data, enabling significant advances in data-driven design. However, learning over prior data limits us only to solve problems that have been solved before and biases data-driven learning towards existing solutions. The ultimate goal for a design agent is the ability to learn generalizable design behavior in a problem space without having seen it before. We introduce a self-learning agent framework in this work that achieves this goal. This framework integrates a deep policy network with a novel tree search algorithm, where the tree search explores the problem space, and the deep policy network leverages self-generated experience to guide the search further. This framework first demonstrates an ability to discover high-performing generative strategies without any prior data, and second, it illustrates a zero-shot generalization of generative strategies across various unseen boundary conditions. This work evaluates the effectiveness and versatility of the framework by solving multiple versions of two engineering design problems without retraining. Overall, this paper presents a methodology to self-learn high-performing and generalizable problem-solving behavior in an arbitrary problem space, circumventing the needs for expert data, existing solutions, and problem-specific learning.
description: ASME. J. Mech. Des
The S-Matrix of 2D Type 0B String Theory Part 2: D-Instanton Effects
Creators: name: Balthazar, Bruno
name: Rodriguez, Victor A.
name: Yin, Xi
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the effect of D-instantons on closed string scattering amplitudes in the two-dimensional type 0B string theory from the worldsheet perspective. We find that the contribution from a pair of D-instanton and anti-D-instanton to the closed string reflection amplitude, with a suitable contour prescription for the integration over the D-instanton moduli space, agrees with the corresponding leading non-perturbative corrections in the proposed dual matrix quantum mechanics. This analysis is further extended to thermal observables defined at finite temperature. The infrared divergence in charged processes is understood through the measure factor for charged D-instantons, and can be treated with spacetime dimensional regularization.
description: 30 pages, 3 figures, 1 table
Hawking radiation - quasi-normal modes correspondence and effective states for nonextremal Reissner-Nordström black holes
Creators: name: Corda, Christian
name: Hendi, Seyed Hossein
name: Katebi, Reza
name: Schmidt, Nathan O.
Publisher: name: arXiv
Year: 2014
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: It is known that the nonstrictly thermal character of the Hawking radiation spectrum harmonizes Hawking radiation with black hole (BH) quasi-normal modes (QNM). This paramount issue has been recently analyzed in the framework of both Schwarzschild BHs (SBH) and Kerr BHs (KBH). In this assignment, we generalize the analysis to the framework of nonextremal Reissner-Nordström BHs (RNBH). Such a generalization is important because in both SBHs and KBHs an absorbed (or emitted) particle has only mass. Instead, in RNBHs the particle has charge as well as mass. In doing so, we expose that for the RNBH, QNMs can be naturally interpreted in terms of quantum levels for both particle emission and absorption. Conjointly, we generalize some concepts concerning the RNBH's "effective states".
description: 16 pages, accepted for publication in Advances in High Energy Physics
Bayesian Quantile Regression for Longitudinal Count Data
Creators: name: Jantre, Sanket
Publisher: name: arXiv
Year: 2022
Subjects: subject: Methodology (stat.ME)
subject: Applications (stat.AP)
subject: Computation (stat.CO)
subject: Other Statistics (stat.OT)
subject: FOS: Computer and information sciences

description: This work introduces Bayesian quantile regression modeling framework for the analysis of longitudinal count data. In this model, the response variable is not continuous and hence an artificial smoothing of counts is incorporated. The Bayesian implementation utilizes the normal-exponential mixture representation of the asymmetric Laplace distribution for the response variable. An efficient Gibbs sampling algorithm is derived for fitting the model to the data. The model is illustrated through simulation studies and implemented in an application drawn from neurology. Model comparison demonstrates the practical utility of the proposed model.
Asteroid spin-axis longitudes from the Lowell Observatory database
Creators: name: Bowell, E.
name: Oszkiewicz, D. A.
name: Wasserman, L. H.
name: Muinonen, K.
name: Penttilä, A.
name: Trilling, D. E.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: By analyzing brightness variation with ecliptic longitude and using the Lowell Observatory photometric database, we estimate spin-axis longitudes for more than 350 000 asteroids. Hitherto, spin-axis longitude estimates have been made for fewer than 200 asteroids. We investigate longitude distributions in different dynamical groups and asteroid families. We show that asteroid spin-axis longitudes are not isotropically distributed as previously considered. We find that the spin-axis longitude distribution for main-belt asteroids is clearly non-random, with an excess of longitudes from the interval 30°-110° and a paucity between 120°-180°. The explanation of the non-isotropic distribution is unknown at this point. Further studies have to be conducted to determine if the shape of the distribution can be explained by observational bias, selection effects, a real physical process or other mechanism.
description: accepted to MAPS
Uniform ergodicity of the Particle Gibbs sampler
Creators: name: Lindsten, Fredrik
name: Douc, Randal
name: Moulines, Eric
Publisher: name: arXiv
Year: 2014
Subjects: subject: Statistics Theory (math.ST)
subject: Probability (math.PR)
subject: FOS: Mathematics

description: The particle Gibbs (PG) sampler is a systematic way of using a particle filter within Markov chain Monte Carlo (MCMC). This results in an off-the-shelf Markov kernel on the space of state trajectories, which can be used to simulate from the full joint smoothing distribution for a state space model in an MCMC scheme. We show that the PG Markov kernel is uniformly ergodic under rather general assumptions, that we will carefully review and discuss. In particular, we provide an explicit rate of convergence which reveals that: (i) for fixed number of data points, the convergence rate can be made arbitrarily good by increasing the number of particles, and (ii) under general mixing assumptions, the convergence rate can be kept constant by increasing the number of particles superlinearly with the number of observations. We illustrate the applicability of our result by studying in detail two common state space models with non-compact state spaces.
title: Ich küss' die Hand ...; [1848]
title: Wie in Ollmütz die Interessen Deutschlands zärtlich vertreten werden, in Folge dessen sich Wien vor Freude in einen Schutthaufen verwandelt. : Melodie. Sophie du holder Engel
titleType: Subtitle
Creators: name: (:Unav)
Publisher: name: Universitätsbibliothek der Ludwig-Maximilians-Universität München
Year: 2018

description: Flugblatt mit Karikatur eines Abgeordneten und Erzherzogin Sophie von Österreich (?)
Fermiology of a topological line-nodal compound CaSb2 and its implication to superconductivity: angle-resolved photoemission study
Creators: name: Chuang, Chien-Wen
name: Souma, Seigo
name: Moriya, Ayumi
name: Nakayama, Kosuke
name: Ikeda, Atsutoshi
name: Kawaguchi, Mayo
name: Obata, Keito
name: Saha, Shanta Ranjan
name: Takahashi, Hidemitsu
name: Kitagawa, Shunsaku
name: Ishida, Kenji
name: Tanaka, Kiyohisa
name: Kitamura, Miho
name: Horiba, Koji
name: Kumigashira, Hiroshi
name: Takahashi, Takashi
name: Yonezawa, Shingo
name: Paglione, Johnpierre
name: Maeno, Yoshiteru
name: Sato, Takafumi
Publisher: name: arXiv
Year: 2022
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We performed angle-resolved photoemission spectroscopy with micro-focused beam on a topological line-nodal compound CaSb2 which undergoes a superconducting transition at the onset Tc~1.8 K, to clarify the Fermi-surface topology relevant to the occurrence of superconductivity. We found that a three-dimensional hole pocket at the G point is commonly seen for two types of single-crystalline samples fabricated by different growth conditions. On the other hand, the carrier-doping level estimated from the position of the chemical potential was found to be sensitive to the sample fabrication condition. The cylindrical electron pocket at the Y(C) point predicted by the calculations is absent in one of the two samples, despite the fact that both samples commonly show superconductivity with similar Ts's. This suggests a key role of the three-dimensional hole pocket to the occurrence of superconductivity, and further points to an intriguing possibility to control the topological nature of superconductivity by carrier tuning in CaSb2.
description: 7 pages, 3 figures
Phase transitions for random geometric preferential attachment graphs
Creators: name: Jordan, Jonathan
name: Wade, Andrew R.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60D05 (Primary) 05C80, 90B15 (Secondary)

description: We study an evolving spatial network in which sequentially arriving vertices are joined to existing vertices at random according to a rule that combines preference according to degree with preference according to spatial proximity. We investigate phase transitions in graph structure as the relative weighting of these two components of the attachment rule is varied. Previous work of one of the authors showed that when the geometric component is weak, the limiting degree sequence of the resulting graph coincides with that of the standard Barabási--Albert preferential attachment model. We show that at the other extreme, in the case of a sufficiently strong geometric component, the limiting degree sequence coincides with that of a purely geometric model, the on-line nearest-neighbour graph, which is of interest in its own right and for which we prove some extensions of known results. We also show the presence of an intermediate regime, in which the behaviour differs significantly from both the on-line nearest-neighbour graph and the Barabási--Albert model; in this regime, we obtain a stretched exponential upper bound on the degree sequence. Our results lend some mathematical support to simulation studies of Manna and Sen, while proving that the power law to stretched exponential phase transition occurs at a different point from the one conjectured by those authors.
description: 28 pages
Discretized Linear Regression and Multiclass Support Vector Based Air Pollution Forecasting Technique
Creators: name: M, Dhanalakshmi
name: V, Radha
Publisher: name: arXiv
Year: 2022
Subjects: subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Air pollution is a vital issue emerging from the uncontrolled utilization of traditional energy sources as far as developing countries are concerned. Hence, ingenious air pollution forecasting methods are indispensable to minimize the risk. To that end, this paper proposes an Internet of Things (IoT) enabled system for monitoring and controlling air pollution in the cloud computing environment. A method called Linear Regression and Multiclass Support Vector (LR-MSV) IoT-based Air Pollution Forecast is proposed to monitor the air quality data and the air quality index measurement to pave the way for controlling effectively. Extensive experiments carried out on the air quality data in the India dataset have revealed the outstanding performance of the proposed LR-MSV method when benchmarked with well-established state-of-the-art methods. The results obtained by the LR-MSV method witness a significant increase in air pollution forecasting accuracy by reducing the air pollution forecasting time and error rate compared with the results produced by the other state-of-the-art methods
description: 9 pages, 7 figures, Published with International Journal of Engineering Trends and Technology (IJETT)
Bubble contributions to scalar correlators with mixed actions
Creators: name: Fu, Ziwen
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: WWithin mixed-action chiral perturbation theory (MA$χ$PT), Sasa's derivation of the bubble contribution to scalar $a_0$ meson is extended to those of scalar $κ$ and $σ$ mesons. We revealed that $κ$ bubble has two double poles and $σ$ bubble contains a quadratic-in-$t^2$ growth factor stemming from the multiplication of two double poles for a general mass tuning of valence quarks and sea quarks. The corresponding preliminary analytical expressions in MA$χ$PT with 2+1 chiral valence quarks and 2+1 staggered sea quarks will be helpful for lattice studies of scalar mesons.
description: 9 pages
Comparing and contrasting extreme stratospheric events, including their coupling to the tropospheric circulation
Creators: name: Dunn-Sigouin, Etienne
name: Shaw, Tiffany Ann
Publisher: name: Columbia University
Year: 2015
Subjects: subject: Troposphere
subject: Atmospheric thermodynamics
subject: Stratosphere
subject: Polar vortex
subject: Geophysics
subject: FOS: Earth and related environmental sciences
subject: Atmosphere

description: Recent work has emphasized the importance of stratosphere-troposphere coupling associated with extreme values of the polar vortex strength and stratospheric planetary wave heat flux during Northern Hemisphere winter. Here using ERA-Interim reanalysis data the evolution of the two types of events are compared. The life cycle of total (anomaly plus climatology) positive/negative heat flux events are associated with vertically deep high-latitude planetary wave structures and exhibit largely equal but opposite-signed impacts, including a net deceleration/acceleration of the polar vortex due to EP flux convergence/divergence and an equatorward/poleward tropospheric jet shift in the North Atlantic. The tropospheric wave pattern is westward propagating. High-latitude stratospheric vertical zonal wind shear plays a key role during both events. A comparison of the stratospheric events reveals that planetary wave events contribute to the development of vortex events. In particular, total negative heat flux events precede strong vortex events showing that strong vortex events represent true dynamical events involving significant wave-mean flow interaction. Coupling with the North Atlantic jet occurs preceding vortex events when wave-1 dominates the total eddy heat flux in the lower stratosphere since interference with wave-2 makes the impacts less clear. The tropospheric impacts in the North Atlantic associated with planetary wave events are found to be comparable if not larger than those following vortex events.
title: Optimized Operation of Interleaved Motor Drive Inverter by means of Model Predictive Control
Creators: name: Fuller, Morris
Publisher: name: UNSPECIFIED
Year: 2023

description: This thesis studies the challenges and benefits of interleaving in the context of drive inverter systems for induction machines. For this purpose, interleaved inverter topologies are introduced and analyzed. A detailed modeling of the favored interleaved inverter system in combination with the anticipated load is conducted. An optimal control strategy in form of finite control set model predictive control is developed and evaluated in simulation. Several optimization goals for the drive systems, such as control quality, efficiency in terms of losses and hardware effort, and reduction of undesirable side-effects owing to inverter-feeding are considered. The acquirable performance is compared to conventional two-level inverter realizations. A real-time controller implementation and hardware-based proof of concept is carried out. Deviations between simulation results and hardware measurements are discussed. Guidelines for optimized controller and hardware designs, as well as for future research topics are provided.
Twisted reduction in large N QCD with adjoint Wilson fermions
Creators: name: González-Arroyo, Antonio
name: Okawa, Masanori
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The twisted space-time reduced model of large $N$ QCD with various flavours of adjoint Wilson fermions is constructed applying the symmetric twist boundary conditions with flux $k$. The models with one and two flavours show distinctive behaviours. For the two flavor case, the string tension, calculated at $N=289$, approaches zero as we decrease the quark mass in a way consistent with the theory being governed by an infrared fixed point. In contrast, the string tension for the case of a single adjoint Wilson fermion remains finite as the quark mass decreases to zero, supporting that this is a confining theory.
description: 7 pages, 8 figures, presented at the 31st International Symposium on Lattice Field Theory (Lattice 2013), 29 July - 3 August 2013, Mainz, Germany
Anfrage des Eduard Gustav Satyr der sich mit seiner Sippschaft der Vernichtung preiss gegeben sieht: "Gedenkt das Ministerium dass das Gesetz vom 30. Sept. den Schutz der Abgeordneten betr. nach Art der k. k. Regierung in Wiens so fort gehandhabt werde???; [1848]
Creators: name: Kohlbacher, Ludwig
Publisher: name: Universitätsbibliothek der Ludwig-Maximilians-Universität München
Year: 2018

description: Vorlageform der Veröffentlichungsangabe: Verlag v. R. Baist in Rödelheim
Constraining Axion Dark Matter with Big Bang Nucleosynthesis
Creators: name: Blum, Kfir
name: D'Agnolo, Raffaele Tito
name: Lisanti, Mariangela
name: Safdi, Benjamin R.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We show that Big Bang Nucleosynthesis (BBN) significantly constrains axion-like dark matter. The axion acts like an oscillating QCD $θ$ angle that redshifts in the early universe, increasing the neutron-proton mass difference at neutron freeze-out. An axion-like particle that couples too strongly to QCD results in the underproduction of 4He during BBN and is thus excluded. The BBN bound overlaps with much of the parameter space that would be covered by proposed searches for time-varying neutron EDMs. The QCD axion does not couple strongly enough to affect BBN.
description: 5 pages, 2 figures; v2 typos corrected, numerical values for quark masses updated
Letter from Barbara Hepworth to Herbert Read, December 08, 1966
Creators: name: Hepworth, Barbara, 1903-1975
Publisher: name: University of Victoria Libraries
Year: 2023
Subjects: subject: Hepworth, Barbara, 1903-1975
valueUri: http://id.worldcat.org/fast/1898202
subject: Artists
valueUri: http://id.worldcat.org/fast/817559
subject: Authors
valueUri: http://id.worldcat.org/fast/821688
subject: Artists--Correspondence
valueUri: http://id.worldcat.org/fast/817571
subject: Read, Herbert, 1893-1968
valueUri: http://id.worldcat.org/fast/1754386
subject: Women artists
valueUri: http://id.worldcat.org/fast/1177159
subject: Poets
valueUri: http://id.worldcat.org/fast/1067778
subject: Poets, English
valueUri: http://id.worldcat.org/fast/1067870
subject: Art historians
valueUri: http://id.worldcat.org/fast/815554
subject: Authors, English
valueUri: http://id.worldcat.org/fast/821945
subject: Authors, English--Correspondence
valueUri: http://id.worldcat.org/fast/821953
subject: Art movements
valueUri: http://id.worldcat.org/fast/815613

description: Part of a collection of letters to Sir Herbert Read from Dame Barbara Hepworth (English artist and sculptor) held in the Herbert Read archive at the University of Leeds, UK. The letters span the time period of 1965 to 1968, and discuss art, the art world and their personal lives. Hepworth is pleased to have had a visit from Read's son Tom and his fiancée Celia. She discusses the Tate gallery's potential acquisition of ""WHAM"" [WHAAM! by Roy Lichtenstein].
Cell Collective: Computational Modeling and Simulation Designed with the Classroom in Mind
Creators: name: Whigham, Ehren
name: Cooper, Carlton
name: Wang, Dongfang
name: Kastanos, Evdokia
name: Laverty, Gary
Publisher: name: QUBES Educational Resources
Year: 2020

description: This working group collaborated on content and pedagogy surrounding the use of Cell Collective to integrate computational modeling and simulation into undergraduate biology curriculum.
Community-based Knowledge of Indigenous Vegetation in Arid African Landscapes
Creators: name: Angassa, Ayana
name: Oba, Gufu
name: Stenseth, Nils Chr.
Publisher: name: Columbia University
Year: 2012
Subjects: Traditional ecological knowledge
Land degradation
Biodiversity conservation--Social aspects
Arid regions agriculture--Environmental aspects
Endemic plants
Sustainability
Land use--Planning

description: This article is based on comparative research conducted in three African countries—Mali, Botswana and Kenya—between 2006 and 2007. The research focuses on local perceptions of biodiversity loss and land degradation in grazing pastures as a result of anthropogenic activities. We show that land degradation can be motivated by climate change, while local overuse of indigenous vegetation can lead to resource conflict. We then examine how changes in indigenous vegetation might influence the livelihood and security of local communities. In drawing key findings common to all three countries, we suggest that the sustainability of indigenous vegetation in dryland ecosystems can be maintained through seasonal mobility of herds, preservation of dry season grazing and improved livestock marketing, and that failure to do so can result in far-reaching consequences for rural communities.
Bayesian evidence-driven likelihood selection for sky-averaged 21-cm signal extraction
Creators: name: Scheutwinkel, K. H.
name: Handley, W.
name: Acedo, E. de Lera
Publisher: name: arXiv
Year: 2022
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We demonstrate that the Bayesian evidence can be used to find a good approximation of the ground truth likelihood function of a dataset, a goal of the likelihood-free inference (LFI) paradigm. As a concrete example, we use forward modelled sky-averaged 21-cm signal antenna temperature datasets where we artificially inject noise structures of various physically motivated forms. We find that the Gaussian likelihood performs poorly when the noise distribution deviates from the Gaussian case e.g. heteroscedastic radiometric or heavy-tailed noise. For these non-Gaussian noise structures, we show that the generalised normal likelihood is on a similar Bayesian evidence scale with comparable sky-averaged 21-cm signal recovery as the ground truth likelihood function of our injected noise. We therefore propose the generalised normal likelihood function as a good approximation of the true likelihood function if the noise structure is a priori unknown.
description: accepted to PASA
Herz, Christian J.: Ikaros - wohin fliegst du?
Creators: name: Hüttinger, Martin
Publisher: name: Werkstatt Schwule Theologie
Year: 1970

description: Werkstatt Schwule Theologie, Bd. 4 Nr. 4 (1997): Werkstatt Schwule Theologie, Band 4, Heft 4
title: Der Schlüssel ist gefunden am 21. August 1848; [1848]
title: Ausfall der Soldaten auf dem Schrannenplatze, und Bestürmung der Rathhaus-Versammlung um die zehnte Stunde Nachts. ...
titleType: Subtitle
Creators: name: (:Unav)
Publisher: name: Universitätsbibliothek der Ludwig-Maximilians-Universität München
Year: 2018

description: Flugbatt mit 7 Karikaturen auf den "Schatzkrawall" am 21. August 1848 in München
D meson-hadron angular correlations in pp and p-Pb collisions with ALICE at the LHC
Creators: name: Colamaria, Fabio
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The comparison of angular correlations between charmed mesons and charged hadrons produced in pp, p-Pb and Pb-Pb collisions can give insight into charm quark energy loss mechanisms in hot nuclear medium formed in heavy-ion collisions and can help to spot possible modifications of charm quark hadronization induced by the presence of the medium. The analysis of pp and p-Pb data and the comparison with predictions from pQCD calculations, besides constituting the necessary baseline for the interpretation of Pb-Pb results, can provide relevant information on charm production and fragmentation processes. We present a study of azimuthal correlations between D$^0$ and D$^{\ast +}$ mesons and charged hadrons measured by the ALICE experiment in pp collisions at $\sqrt{s} = 7$ TeV and p-Pb collisions at $\sqrt{s_{\rm NN}} = 5.02$ TeV. D mesons were reconstructed from their hadronic decays at central rapidity and in the transverse momentum range $2 < p_{_{\rm T}} < 16$ GeV/$c$, and they were correlated to charged hadrons reconstructed in the pseudorapidity range $|η| < 0.8$.
description: 4 pages, 4 figures. Proceedings of the Strangeness in Quark Matter Conference (SQM 2013), 22nd - 27th July 2013, published by the Open Access Journal of Physics: Conference Series (JPCS), in the IOP conference series
The Sustainability of Urban Development in Developing Economies
Creators: name: Kiamba, Anita
Publisher: name: Columbia University
Year: 2012
Subjects: Economic development
Community development, Urban
Developing countries
Sustainable urban development
Sustainability
City planning

description: Many developing countries are currently undergoing increasingly rapid economic growth, which contributes in turn to urban development. Though this urban development would seem to benefit these countries, it can also, if inappropriately managed, create distinct challenges for them. In this article, several development scenarios for a developing country are presented and discussed in order to demonstrate that robust long-term economic growth ultimately requires an increased commitment to sustainable development policies. After these scenarios, the article then identifies important and newly emerging issues for developing countries, and it concludes with specific policy recommendations for achieving more sustainable urban development.
Regression-based heterogeneity analysis to identify overlapping subgroup structure in high-dimensional data
Creators: name: Luo, Ziye
name: Yao, Xinyue
name: Sun, Yifan
name: Fan, Xinyan
Publisher: name: arXiv
Year: 2022
Subjects: subject: Methodology (stat.ME)
subject: Genomics (q-bio.GN)
subject: Applications (stat.AP)
subject: FOS: Computer and information sciences
subject: FOS: Biological sciences

description: Heterogeneity is a hallmark of complex diseases. Regression-based heterogeneity analysis, which is directly concerned with outcome-feature relationships, has led to a deeper understanding of disease biology. Such an analysis identifies the underlying subgroup structure and estimates the subgroup-specific regression coefficients. However, most of the existing regression-based heterogeneity analyses can only address disjoint subgroups; that is, each sample is assigned to only one subgroup. In reality, some samples have multiple labels, for example, many genes have several biological functions, and some cells of pure cell types transition into other types over time, which suggest that their outcome-feature relationships (regression coefficients) can be a mixture of relationships in more than one subgroups, and as a result, the disjoint subgrouping results can be unsatisfactory. To this end, we develop a novel approach to regression-based heterogeneity analysis, which takes into account possible overlaps between subgroups and high data dimensions. A subgroup membership vector is introduced for each sample, which is combined with a loss function. Considering the lack of information arising from small sample sizes, an $l_2$ norm penalty is developed for each membership vector to encourage similarity in its elements. A sparse penalization is also applied for regularized estimation and feature selection. Extensive simulations demonstrate its superiority over direct competitors. The analysis of Cancer Cell Line Encyclopedia data and lung cancer data from The Cancer Genome Atlas shows that the proposed approach can identify an overlapping subgroup structure with favorable performance in prediction and stability.
description: 33 pages, 16 figures
Instagram and the Eritrean National Imaginary: Affective Uses of Independent Community Archives
Creators: name: Tesfai, Rita
Publisher: name: University of Chicago
Year: 2023
Subjects: subject: participatory archives
subject: Eritrea
subject: Instagram
subject: digital media

description: My project examines the emergence of grassroots archival initiatives on Instagram and explores the manifold ways diasporic identities are being mediated and negotiated through cyberspatial publics. I track how users activate independent archives on social media networks such as Instagram to forge an Eritrean national imagination. Eritreans in the diaspora are using the photo-sharing platform to their advantage, transforming themselves from passive consumers of archival activity into active agents behind public history-making through participatory archives. Grounded in an emic approach, I use @Eri.treanArchives an Eritrean-based independent archive as a field site in which I conduct virtual ethnographic work. I analyze posts and responses to them, explore concepts of extraterritorialism, and identify collaborative approaches and effective uses of submissions. In so doing, I examine how collective memory is built and the nostalgia for an imagined past, that both constitute or produce an Eritrean diasporic identity, but also reveal political tensions. In addition, I observe how Eritrean national identity is articulated through various postings that highlight anti-colonial confrontation, the steadfastness of the Eritrean people, and a multicultural heritage. Eritrean national identity, as formulated by the E.P.L.F. is a multiethnic, multifaith African political community founded upon globalist humanist understanding and shared opposition to imperialism (Serequeberhan 1989). Through investigation of archival spaces such as @Eri.treanArchives, I identify how values and ideals within the independence struggle are reproduced through the content of the account, and how @Eri.treanArchives attempts to make unity in political and ethnic diversity.
Memory effects displayed in the evolution of continuous variable system
Creators: name: Hesabi, Samaneh
name: Bera, Anindita
name: Chruściński, Dariusz
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We analyze non-Markovian memory effects displayed by the quantum Brownian motion modelled as quantum harmonic oscillators coupled to a bath consisting of harmonic oscillators. We study the time evolution of fidelity, Petz-Rényi relative entropy and quantum entanglement for a family of 1-, 2- and 3-mode Gaussian states.
description: 16 pages, 7 figures
Non-Zeeman Circular Polarization of CO rotational lines in SNR IC 443
Creators: name: Hezareh, Talayeh
name: Wiesemeyer, Helmut
name: Houde, Martin
name: Gusdorf, Antoine
name: Siringo, Giorgio
Publisher: name: arXiv
Year: 2013
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Context: We investigate non-Zeeman circular polarization and linear polarization levels of up to 1% of $^{12}$CO spectral line emission detected in a shocked molecular clump around the supernova remnant (SNR) IC 443, with the goal of understanding the magnetic field structure in this source. Aims: We examine our polarization results to confirm that the circular polarization signal in CO lines is caused by a conversion of linear to circular polarization, consistent with anisotropic resonant scattering. In this process background linearly polarized CO emission interacts with similar foreground molecules aligned with the ambient magnetic field and scatters at a transition frequency. The difference in phase shift between the orthogonally polarized components of this scattered emission can cause a transformation of linear to circular polarization. Methods: We compared linear polarization maps from dust continuum, obtained with PolKa at APEX, and $^{12}$CO ($J=2\rightarrow1$) and ($J=1\rightarrow0$) from the IRAM 30-m telescope and found no consistency between the two sets of polarization maps. We then reinserted the measured circular polarization signal in the CO lines across the source to the corresponding linear polarization signal to test whether before this linear to circular polarization conversion the linear polarization vectors of the CO maps were aligned with those of the dust. Results: After the flux correction for the two transitions of the CO spectral lines, the new polarization vectors for both CO transitions aligned with the dust polarization vectors, establishing that the non-Zeeman CO circular polarization is due to a linear to circular polarization conversion.
description: 17 pages, 11 figures, accepted for publication in Astronomy & Astrophysics
Nichttheologisch-theologische Gedanken über schwule Beziehung
Creators: name: Käufl, Christian
Publisher: name: Werkstatt Schwule Theologie
Year: 1970

description: Werkstatt Schwule Theologie, Bd. 4 Nr. 4 (1997): Werkstatt Schwule Theologie, Band 4, Heft 4
Letter from Barbara Hepworth to Herbert Read, November 08, 1966
Creators: name: Hepworth, Barbara, 1903-1975
Publisher: name: University of Victoria Libraries
Year: 2023
Subjects: subject: Art historians
valueUri: http://id.worldcat.org/fast/815554
subject: Poets, English
valueUri: http://id.worldcat.org/fast/1067870
subject: Art movements
valueUri: http://id.worldcat.org/fast/815613
subject: Poets
valueUri: http://id.worldcat.org/fast/1067778
subject: Hepworth, Barbara, 1903-1975
valueUri: http://id.worldcat.org/fast/1898202
subject: Authors
valueUri: http://id.worldcat.org/fast/821688
subject: Authors, English--Correspondence
valueUri: http://id.worldcat.org/fast/821953
subject: Read, Herbert, 1893-1968
valueUri: http://id.worldcat.org/fast/1754386
subject: Women artists
valueUri: http://id.worldcat.org/fast/1177159
subject: Artists
valueUri: http://id.worldcat.org/fast/817559
subject: Authors, English
valueUri: http://id.worldcat.org/fast/821945
subject: Artists--Correspondence
valueUri: http://id.worldcat.org/fast/817571

description: Part of a collection of letters to Sir Herbert Read from Dame Barbara Hepworth (English artist and sculptor) held in the Herbert Read archive at the University of Leeds, UK. The letters span the time period of 1965 to 1968, and discuss art, the art world and their personal lives. Hepworth writes about health issues and looks forward to meeting Read the following week.
Strain-engineering of graphene's electronic structure beyond continuum elasticity
Creators: name: Barraza-Lopez, Salvador
name: Sanjuan, Alejandro A. Pacheco
name: Wang, Zhengfei
name: Vanevic, Mihajlo
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We present a new first-order approach to strain-engineering of graphene's electronic structure where no continuous displacement field $\mathbf{u}(x,y)$ is required. The approach is valid for negligible curvature. The theory is directly expressed in terms of atomic displacements under mechanical load, such that one can determine if mechanical strain is varying smoothly at each unit cell, and the extent to which sublattice symmetry holds. Since strain deforms lattice vectors at each unit cell, orthogonality between lattice and reciprocal lattice vectors leads to renormalization of the reciprocal lattice vectors as well, making the $K$ and $K'$ points shift in opposite directions. From this observation we conclude that no $K-$dependent gauges enter on a first-order theory. In this formulation of the theory the deformation potential and pseudo-magnetic field take discrete values at each graphene unit cell. We illustrate the formalism by providing strain-generated fields and local density of electronic states on graphene membranes with large numbers of atoms. The present method complements and goes beyond the prevalent approach, where strain engineering in graphene is based upon first-order continuum elasticity.
description: 7 pages, 6 figures. This article appeared as a Fast-track Communication in May, 2013