cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Ejection velocities, age, and formation process of SPE meteoroid cluster
Creators: name: Čapek, David
name: Koten, Pavel
name: Spurný, Pavel
name: Shrbený, Lukáš
Publisher: name: arXiv
Year: 2022
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We follow our previous work about the September epsilon Perseid (SPE) meteoroid cluster from 2016. We assumed that the mass-dominated meteoroid is the parent body of the cluster and that the observed positions of meteoroids are controlled by the ejection velocities and the action of solar radiation pressure. A formula for the dependence of meteoroid ejection velocities on the mutual positions, masses, and cluster age was derived. Knowing values and directions of ejection velocities together with meteoroid masses then allowed us to determine the most likely process of cluster formation. The meteoroids occupy a volume of 66$\times$67$\times$50 km and are shifted in the antisolar direction by 27 km relative to the parent meteoroid. The age of the cluster is 2.28$\pm$0.44 days. The ejection velocities range from 0.13$\pm$0.05 m/s to 0.77$\pm$0.34 m/s with a mean value of 0.35 m/s. The ejection velocity directions are inside the cone with an apex angle of 101$\pm$5$^\circ$. The axis of the cone is $\sim$45$^\circ$ away from the solar direction and $\sim$34$^\circ$ away from the mean direction of the flux of small meteoroids' incident on the parent meteoroid. Formation due to the separation of part of the surface due to very fast rotation is the least likely thing to occur. We estimate the rotation frequency to be about 2 Hz and the corresponding stress is several orders of magnitude lower than the predicted strength limit. It is also difficult to explain the formation of the cluster by an impact of a small meteoroid on the parent body. However, this possibility, although not very likely, cannot be completely ruled out. The most probable process is the exfoliation due to thermal stresses. Their estimated magnitude is sufficient and the derived ejection velocities are consistent with this process of formation.
description: 11 pages, 5 figures, 2 tables. Accepted in Astronomy and Astrophysics
Additional file 1 of Effects of virtual reality-based motor control training on inflammation, oxidative stress, neuroplasticity and upper limb motor function in patients with chronic stroke: a randomized controlled trial
Creators: name: Huang, Chien-Yu
name: Chiang, Wei-Chi
name: Yeh, Ya-Chin
name: Fan, Shih-Chen
name: Yang, Wan-Hsien
name: Kuo, Ho-Chang
name: Li, Ping-Chia
Publisher: name: figshare
Year: 2022
Subjects: subject: Biochemistry
subject: Space Science
subject: Medicine
subject: Cell Biology
subject: Physiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Additional file 1. Information of selected commercial game.
Pseudolepturges rufulus
Creators: name: Monné, Miguel A.
Publisher: name: Zenodo
Year: 2005
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Cerambycidae
Pseudolepturges
Pseudolepturges rufulus

description: 1. Pseudolepturges rufulus (Bates, 1885)
Type locality — Guatemala, Baja Verapaz: San Jerónimo. (BMNH). Distribution — Guatemala.
 Lepturges rufulus Bates, 1885: 406, pl. 24, fig. 26.
 Pseudolepturges rufulus; Gilmour, 1957: 27; Chemsak et al., 1992: 145 (cat.).
  Pucallpa Lane, 1959
 Pucallpa Lane, 1959b: 254; Monné, 1978b: 587 (rev.).
 Type­species — Pucallpa cristata Lane, 1959 (monotypy and original designation).
description: Published as part of Monné, Miguel A., 2005, Catalogue of the Cerambycidae (Coleoptera) of the Neotropical Region. Part II. Subfamily Lamiinae, pp. 1-760 in Zootaxa 1023 (1) on pages 1-760, DOI: 10.11646/zootaxa.946.1.1, http://zenodo.org/record/5049553
Additional file 1 of Quantitative washout in patients with hepatocellular carcinoma undergoing TACE: an imaging biomarker for predicting prognosis?
Creators: name: Müller, Lukas
name: Hahn, Felix
name: Jungmann, Florian
name: Mähringer-Kunz, Aline
name: Stoehr, Fabian
name: Halfmann, Moritz C.
name: Pinto dos Santos, Daniel
name: Hinrichs, Jan
name: Auer, Timo A.
name: Düber, Christoph
name: Kloeckner, Roman
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: Cell Biology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Cancer
subject: Science Policy

description: Additional file 1.
title: Die Reschenbahn – Eine Systemanalyse zu angrenzenden Bahnen im Dreiländereck AT-CH-IT
Creators: name: Schauer, Johannes
name: Rüger, Bernhard
Publisher: name: TU Wien
Year: 2024
Subjects: Reschenbahn

description: Im Umfeld des Reschenpasses befinden sich mehrere Eisenbahnstrecken: Die Arlbergbahn, die Rhätische Bahn und die Vinschgaubahn. Die Realisierung der Reschenbahn würde die Möglichkeit bieten, diese miteinander zu verbinden sowie touristische Orte der Region ans Eisenbahnnetz anzuschließen. Hierfür ist es allerdings notwendig, die technischen Systemunterschiede der drei Bahnen zu überwinden. Der vorliegende Fachartikel soll die Unterschiede und Möglichkeiten zur Vernetzung derselben aufzeigen.
Numerical methods for antiferromagnetics
Creators: name: Li, Panchi
name: Chen, Jingrun
name: Du, Rui
name: Wang, Xiao-Ping
Publisher: name: arXiv
Year: 2019
Subjects: subject: Computational Engineering, Finance, and Science (cs.CE)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences
subject: 35Q99, 65Z05, 65M06

description: Compared with ferromagnetic counterparts, antiferromagnetic materials are considered as the future of spintronic applications since these materials are robust against the magnetic perturbation, produce no stray field, and display ultrafast dynamics. There are (at least) two sets of magnetic moments in antiferromagnets (with magnetization of the same magnitude but antiparallel directions) and ferrimagnets (with magnetization of the different magnitude). The coupled dynamics for the bipartite collinear antiferromagnets is modeled by a coupled system of Landau-Lifshitz-Gilbert equations with an additional term originated from the antiferromagnetic exchange, which leads to femtosecond magnetization dynamics. In this paper, we develop three Gauss-Seidel projection methods for micromagnetics simulation in antiferromagnets and ferrimagnets. They are first-order accurate in time and second-order in space, and only solve linear systems of equations with constant coefficients at each step. Femtosecond dynamics, Néel wall structure, and phase transition in presence of an external magnetic field for antiferromagnets are provided with the femtosecond stepsize.
THE EFFECT OF DISTORTIONS IN RELATIVE PRICES ON CORN PRODUCTIVITY: A CROSS-COUNTRY STUDY
Creators: name: Lyons, David C.
name: Thompson, Robert L.
name: Lyons, David C.
name: Thompson, Robert L.
Publisher: name: Unknown
Year: 1978
Subjects: Crop Production/Industries

description: Pooled data from 14 large corn producing countries for 13 years show that the corn-nitrogen price ratio, as well as physical factors and technology, account for a significant part of corn yield differences among countries. Policies which distort corn and fertilizer prices have a significant effect on corn yields.
Rotation matrix and nomenclature table from Onset and limiting amplitude of yaw instability of a submerged three-tethered buoy. 11 November 2019 3 February 2020
Creators: name: J. Orszaghova
name: H. Wolgamot
name: S. Draper
name: P. H. Taylor
name: A. Rafiee
Publisher: name: The Royal Society
Year: 2020
Subjects: subject: 91103 Ocean Engineering
subject: FOS: Environmental engineering
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics

description: In this paper the dynamics of a submerged axi-symmetric wave energy converter are studied, through mathematical models and wave basin experiments. The device is disk-shaped and taut-moored via three inclined tethers which also act as a power take-off. We focus on parasitic yaw motion, which is excited parametrically due to coupling with heave. Assuming linear hydrodynamics throughout, but considering both linear and nonlinear tether geometry, governing equations are derived in 6 degrees of freedom (d.f.). From the linearized equations, all motions, apart from yaw, are shown to be contributing to the overall power absorption. At higher orders, the yaw governing equation can be recast into a classical Mathieu equation (linear in yaw), or a nonlinear Mathieu equation with cubic damping and stiffness terms. The well-known stability diagram for the classical Mathieu equation allows prediction of onset/occurrence of yaw instability. From the nonlinear Mathieu equation, we develop an approximate analytical solution for the amplitude of the unstable motions. Comparison with regular wave experiments confirms the utility of both models for making relevant predictions. Additionally, irregular wave tests are analysed whereby yaw instability is successfully correlated to the amount of parametric excitation and linear damping. This study demonstrates the importance of considering all modes of motion in design, not just the power-producing ones. Our simplified 1 d.f. yaw model provides fundamental understanding of the presence and severity of the instability. The methodology could be applied to other wave-activated devices.
Branching States as The Emergent Structure of a Quantum Universe
Creators: name: Touil, Akram
name: Anza, Fabio
name: Deffner, Sebastian
name: Crutchfield, James P.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Quantum Darwinism builds on decoherence theory to explain the emergence of classical behavior in a fundamentally quantum universe. Within this framework we prove two crucial insights about the emergence of classical phenomenology, centered around quantum discord as the measure of quantumness of correlations. First, we show that the so-called branching structure of the joint state of the system and environment is the only one compatible with zero discord. Second, we prove that for small but nonzero discord and for good but not perfect decoherence, the structure of the globally pure state must be arbitrarily close to the branching form, with each branch exhibiting low entanglement. Our results significantly improve on previous bounds and reinforce the existing evidence that this class of branching states is the only one compatible with the emergence of classical phenomenology, as described by Quantum Darwinism.
description: 14 pages, 3 figures
New instabilities for non-supersymmetric AdS$_4$ orientifold vacua
Creators: name: Marchesano, Fernando
name: Quirant, Joan
name: Zatti, Matteo
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider massive type IIA orientifold compactifications of the form AdS$_4 \times X_6$, where $X_6$ admits a Calabi-Yau metric and is threaded by background fluxes. From a 4d viewpoint, fluxes generate a potential whose vacua have been classified, including one $\mathcal{N}=1$ and three perturbatively stable $\mathcal{N}=0$ branches. We reproduce this result from a 10d viewpoint, by solving the type IIA equations at the same level of detail as previously done for the $\mathcal{N}=1$ branch. All solutions exhibit localised sources and parametric scale separation. We then analyse the non-perturbative stability of the $\mathcal{N}=0$ branches. We consider new 4d membranes, obtained from wrapping D8-branes on $X_6$ or D6-branes on its divisors, threaded by non-diluted worldvolume fluxes. Using them we show that all branches are compatible with the Weak Gravity Conjecture for membranes. In fact, most vacua satisfy the sharpened conjecture that predicts superextremal membranes in $\mathcal{N}=0$ settings, except for a subset whose non-perturbative stability remains an open problem.
description: v2: minor corrections, published version; v1:26 pages + appendices, 2 figures
MARKET EXPECTATIONS AND THE TERM STRUCTURE OF INTEREST RATES
Creators: name: Lins, David A.
name: Aukes, Robert
name: Lins, David A.
name: Aukes, Robert
Publisher: name: Unknown
Year: 1978
Subjects: subject: Marketing
subject: FOS: Economics and business

description: Direct and indirect measures of interest rate expectations are used to measure the term structure of agriculturally related interest rates. Indirect measures of expectations support the expectations hypothesis of the term structure relationship while direct measures (interest rate futures markets) do not. Reasons for this discrepancy are explored.
Pucallpa cristata Lane 1959
Creators: name: Monné, Miguel A.
Publisher: name: Zenodo
Year: 2005
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Cerambycidae
Pucallpa
Pucallpa cristata

description: 1. Pucallpa cristata Lane, 1959
Type locality — Peru, Loreto: Pucallpa. (MNRJ). Distribution — Peru.
 Pucallpa cristata Lane, 1959b: 254, fig. 2; Monné, 1978b: 588; Julio et al., 2000: 48 (holotype).
description: Published as part of Monné, Miguel A., 2005, Catalogue of the Cerambycidae (Coleoptera) of the Neotropical Region. Part II. Subfamily Lamiinae, pp. 1-760 in Zootaxa 1023 (1) on pages 1-760, DOI: 10.11646/zootaxa.946.1.1, http://zenodo.org/record/5049553
Additional file 2 of Effects of virtual reality-based motor control training on inflammation, oxidative stress, neuroplasticity and upper limb motor function in patients with chronic stroke: a randomized controlled trial
Creators: name: Huang, Chien-Yu
name: Chiang, Wei-Chi
name: Yeh, Ya-Chin
name: Fan, Shih-Chen
name: Yang, Wan-Hsien
name: Kuo, Ho-Chang
name: Li, Ping-Chia
Publisher: name: figshare
Year: 2022
Subjects: subject: Biochemistry
subject: Space Science
subject: Medicine
subject: Cell Biology
subject: Physiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Additional file 2. Scenarios of selected commercial games.
Potential and field singularity at a surface point charge
Creators: name: Silbergleit, Alexander
name: Mandel, Ilya
name: Nemenman, Ilya
Publisher: name: arXiv
Year: 2003
Subjects: subject: Mathematical Physics (math-ph)
subject: Superconductivity (cond-mat.supr-con)
subject: Analysis of PDEs (math.AP)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: The behavior of the magnetic potential near a point charge (fluxon) located at a curved regular boundary surface is shown to be essentially different from that of a volume point charge. In addition to the usual inverse distance singularity, two singular terms are generally present. The first of them, a logarithmic one, is axially symmetric with respect to the boundary normal at the charge location, and proportional to the sum of the two principal curvatures of the boundary surface at this point, that is, to the local mean curvature. The second term is asymmetric and proportional to the difference of the two principal curvatures in question; it is also bounded at the charge location. Both terms vanish, apparently, if the charge is at a planar point of the boundary, and only in this case. The field in the charge vicinity behaves accordingly, featuring generally two singular terms proportional to the inverse distance, in addition to the main inverse distance squared singularity. This result is significant, in particular, for studying the interaction of magnetic vortices in type II superconductors.
description: 5 pages, 1 figure, RevTeX 4
The Ramifications of Nearly Going Dark: A Natural Experiment in the Case of U.S. Generic Orange Juice Advertising
Creators: name: Capps, Oral
name: Bessler, David A.
name: Williams, Gary W.
name: Capps, Oral
name: Bessler, David A.
name: Williams, Gary W.
Publisher: name: Unknown
Year: 2016
Subjects: subject: Agricultural and Food Policy
subject: Crop Production/Industries
subject: Food Consumption/Nutrition/Food Safety
subject: Marketing
subject: FOS: Economics and business
subject: Check-off Programs
subject: Counterfactual
subject: Econometric Model
subject: Natural Experiment
subject: Orange Juice Demand Analysis
subject: VAR Model

description: Evaluations of generic advertising programs by commodity check-off programs involve analyses of counterfactual scenarios in which advertising and promotion expenditures are set to zero over the program’s history. In actual practice, the counterfactual is rarely realized. We present a case in which such a natural experiment occurred when generic advertising and promotion expenditures for U.S. orange juice were cut nearly to zero. Using structural econometric and autoregression models, we estimate losses in consumption and sales revenue and examine the time required for the market for orange juice to recover from the check-off’s strategy of going nearly dark.
Using Networks and Partial Differential Equations to Predict Bitcoin Price
Creators: name: Wang, Yufang
name: Wang, Haiyan
Publisher: name: arXiv
Year: 2020
Subjects: subject: Pricing of Securities (q-fin.PR)
subject: FOS: Economics and business
subject: 35Q94

description: Over the past decade, the blockchain technology and its Bitcoin cryptocurrency have received considerable attention. Bitcoin has experienced significant price swings in daily and long-term valuations. In this paper, we propose a partial differential equation (PDE) model on the bitcoin transaction network for predicting bitcoin price. Through analysis of bitcoin subgraphs or chainlets, the PDE model captures the influence of transaction patterns on bitcoin price over time and combines the effect of all chainlet clusters. In addition, Google Trends Index is incorporated to the PDE model to reflect the effect of bitcoin market sentiment. The experiment shows that the average accuracy of daily bitcoin price prediction is 0.82 for 362 consecutive days in 2017. The results demonstrate the PDE model is capable of predicting bitcoin price. The paper is the first attempt to apply a PDE model to the bitcoin transaction network for predicting bitcoin price.
Issue Brief: Scenarios and drivers to explore global food security up to 2050
Creators: name: Van Dijk, Michiel
name: Van Dijk, Michiel
Publisher: name: Unknown
Year: 2017
Subjects: Food Security and Poverty

description: Several conclusions can be drawn from the scenario development process. First, a participatory approach towards scenario development, involving a diverse group of stakeholders, combined with a professional management and planning of the process, leads to the creation of innovative and diverse scenarios. It is unlikely that the derived scenarios would also have resulted from an exercise that mainly involved scientists. Second, the adaptation of already existing scenarios (the so called ‘fast-track’ approach), that was initially proposed, is not without risk. Stakeholders indicated they wanted to develop new scenarios and therefore a completely new set of scenarios was developed, which, however, led to delays. Finally, participatory ‘trend mapping’, in combination with thorough validation, proved to be a useful tool to derive realistic trends of long-term driving forces of global food and nutrition security.
Hypocycloid motion in the Melvin magnetic universe
Creators: name: Lim, Yen-Kheng
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The trajectory of a charged test particle in the Melvin magnetic universe is shown to take the form of hypocycloids in two different regimes, first of which is the class of perturbed circular orbits, and secondly in the weak-field approximation. In the latter case we find a simple relation between the charge of the particle and the number of cusps. These two regimes are within a continuously connected family of deformed hypocycloid-like orbits parametrised by the magnetic flux strength of the Melvin spacetime.
description: 18 pages, 4 figures. Typos corrected. Introduction and conclusion improved thanks to the suggestions of the anonymous referee
Additional file 3 of Effects of virtual reality-based motor control training on inflammation, oxidative stress, neuroplasticity and upper limb motor function in patients with chronic stroke: a randomized controlled trial
Creators: name: Huang, Chien-Yu
name: Chiang, Wei-Chi
name: Yeh, Ya-Chin
name: Fan, Shih-Chen
name: Yang, Wan-Hsien
name: Kuo, Ho-Chang
name: Li, Ping-Chia
Publisher: name: figshare
Year: 2022
Subjects: subject: Biochemistry
subject: Space Science
subject: Medicine
subject: Cell Biology
subject: Physiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Additional file 3. Trial protocol.
Food price volatility in developing countries - the role of trade policies and storage
Creators: name: Kornher, Lukas
name: Kalkuhl, Matthias
name: Mujahid, Irfan
name: Kornher, Lukas
name: Kalkuhl, Matthias
name: Mujahid, Irfan
Publisher: name: Unknown
Year: 2017
Subjects: subject: Demand and Price Analysis
subject: Food Security and Poverty
subject: International Relations/Trade
subject: Commodity price volatility
subject: storage
subject: trade policies
subject: dynamic panel

description: The work at hand contributes to the ongoing discussion on drivers of food price volatility and closes the gap with respect to the impact of trade and storage policies. A dynamic panel is estimated to account for country fixed eects and the persistence of volatility. Findings underline the importance of international price volatility and transactions costs, while international volatility spill-overs are significantly higher in countries with high imports. New evidence is provided with respect to the impact of anti-cyclical trade policies: Accordingly, both exporters and countries that switch between net-importer and net-exporter successfully stabilize domestic prices by insulating themselves from international markets. On the other hand, regional market integration, as a tool to reduce reliance on (unstable) international trade and to improve stable regional trade relations, reduces volatility at domestic markets.
The Taste for Variety: Demand Analysis for Nut Products in the United States
Creators: name: Cheng, Guo
name: Senarath Dharmasena
name: Capps, Oral
name: Cheng, Guo
name: Senarath Dharmasena
name: Capps, Oral
Publisher: name: Unknown
Year: 2017
Subjects: subject: Agribusiness
subject: Agricultural and Food Policy
subject: Demand and Price Analysis
subject: Taste for Variety
subject: Nut Products
subject: Nielson Data
subject: Demand Analysis

description: The purpose of this study is to augment the classical demand model with consumer’s variety-seeking behavior using 2004-2014 weekly Nielsen scanner data for nut products. We introduce an index variable of taste for variety into the Quadratic Almost Ideal Demand System model with pre-committed quantities. Results show that consumers do respond to the price of nut products since the pre-committed quantities only account for 10% of total consumptions. Consumers purchase more tree nut products while seeking variety, including pecan, walnut, and pistachio, and demand interrelationships among nut products change after allowing consumers to compensate through income.
Does Σ-Σ-αForm a Quasi-Bound State?
Creators: name: Oo, H. Htun
name: Myint, K. S.
name: Kamada, H.
name: Gloeckle, W.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We have investigated the possible existence of a quasi-bound state for the Σ-Σ-αsystem in the framework of Faddeev calculations. We are particularly interested in the state of total iso-spin T=2, since for an inert αparticle there is no strong conversion to Ξ-N-αor Λ-Λ-αpossible. A Σ-αoptical potential based on Nijmegen model D and original Σ-Σinteractions of the series of Nijmegen potentials NSC97 as well a simulated Gaussian type versions thereof are used. Our investigation of the Σ-Σ-αsystem leads to a quasi bound state where, depending on the potential parameters, the energy ranges between -1.4 and -2.4 MeV and the level width is about 0.2MeV.
description: 13 pages, 4 figures, 5 tables
What is culture anyway? : looking back on a workshop design experience
Creators: name: Stevenson, Fiona
Publisher: name: The University of British Columbia
Year: 2011

description: This graduating paper describes the author’s self-reflective process in developing a workshop on Canadian workplace cultures with an accompanying workbook and facilitator’s guide. These were developed for Workplace Connections, a volunteer mentorship program in MOSAIC, a Vancouver based immigrant services provider. This paper, the workbook and facilitator’s guide are counted together to fulfill the graduating paper requirements. The paper firstly examines the struggle to situate MOSAIC’s request to incorporate the theory of cultural dimensions (Hofstede 2001) as applied to Canadian workplaces (Laroche 2003, Laroche and Rutherford 2003) within a socio-constructivist understanding of multiple cultures and experiences. The paper also outlines the author’s attempts to explore the workshop content through a learner-centered, dialogical workshop format drawn from popular education and critical pedagogy approaches. A description of an initial trial workshop compared to the final design identifies some concerns with the final products, highlighting some of the institutional constraints of workshop design and program planning. These lay the groundwork for reflections on the author’s positionality, the connections between theory and practice and a discussion of culture with the framework of immigration, before a final consideration of how this process has affected the author’s teaching perspective.
title: |RE|THINKING THE HERITAGE OF MODERN ARCHITECTURE IN THE MENA REGION AND BEYOND
Creators: name: Benhamza, Fatimzahra
name: Elfaitouri, Sarri
name: Hakim Afyouni, Negar
Publisher: name: TU Wien
Year: 2024
Subjects: mena region
|re|thinking
Heritage
cultural heritage

description: Countries in the MENA region, particularly in North Africa, possess a rich collection of modern architectural heritage dating back to the twentieth century. However, a significant portion of this collection is currently in a critical state. Many historical buildings have been replaced by new infrastructure for three primary reasons: the need for more space in urban centers, a lack of awareness regarding the significance of heritage, and, in some instances, a rejection of the colonial past. The project focuses on revisiting and re-evaluating the modern heritage in Morocco and Libya, emphasizing the urgent attention these sites require. This is achieved through a critical and meticulous lens, fostering a constructive dialogue and comparison with Vienna, Austria. The Placeless Academy is a digital platform that seeks to provide an international forum for the analysis and critique of the architectural legacy in the MENA region. It aims to generate alternative critical knowledge that goes beyond the Western colonial conception of modernity. The project is committed to providing support to emerging architects in Libya, Morocco, and Austria,equipping them with essential tools, mentorship, and global outreach. By establishing a connection between the south (Morocco and Libya) and the north (Austria), The Placeless Academy creates an alternative educational and critical environment that facilitates the exchange of knowledge and shared learning, thereby overcoming didactic and rigid traditional academic systems.
Scale-free and Task-agnostic Attack: Generating Photo-realistic Adversarial Patterns with Patch Quilting Generator
Creators: name: Gao, Xiangbo
name: Luo, Cheng
name: Lin, Qinliang
name: Xie, Weicheng
name: Liu, Minmin
name: Shen, Linlin
name: Kusumam, Keerthy
name: Song, Siyang
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Image and Video Processing (eess.IV)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: \noindent Traditional L_p norm-restricted image attack algorithms suffer from poor transferability to black box scenarios and poor robustness to defense algorithms. Recent CNN generator-based attack approaches can synthesize unrestricted and semantically meaningful entities to the image, which is shown to be transferable and robust. However, such methods attack images by either synthesizing local adversarial entities, which are only suitable for attacking specific contents or performing global attacks, which are only applicable to a specific image scale. In this paper, we propose a novel Patch Quilting Generative Adversarial Networks (PQ-GAN) to learn the first scale-free CNN generator that can be applied to attack images with arbitrary scales for various computer vision tasks. The principal investigation on transferability of the generated adversarial examples, robustness to defense frameworks, and visual quality assessment show that the proposed PQG-based attack framework outperforms the other nine state-of-the-art adversarial attack approaches when attacking the neural networks trained on two standard evaluation datasets (i.e., ImageNet and CityScapes).
The Mouse That Soared: High Resolution X-ray Imaging of the Pulsar-Powered Bow Shock G359.23-0.82
Creators: name: Gaensler, B. M.
name: van der Swaluw, E.
name: Camilo, F.
name: Kaspi, V. M.
name: Baganoff, F. K.
name: Yusef-Zadeh, F.
name: Manchester, R. N.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present an observation with the Chandra X-ray Observatory of the unusual radio source G359.23-0.82 ("the Mouse"), along with updated radio timing data from the Parkes radio telescope on the coincident young pulsar J1747-2958. We find that G359.23-0.82 is a very luminous X-ray source (L_X [0.5-8.0 keV] = 5e34 ergs/s for a distance of 5 kpc), whose morphology consists of a bright head coincident with PSR J1747-2958, plus a 45"-long narrow tail whose power-law spectrum steepens with distance from the pulsar. We thus confirm that G359.23-0.82 is a bow-shock pulsar wind nebula powered by PSR J1747-2958; the nebular stand-off distance implies that the pulsar is moving with a Mach number of ~60, suggesting a space velocity ~600 km/s through gas of density ~0.3 cm^-3. We combine the theory of ion-dominated pulsar winds with hydrodynamic simulations of pulsar bow shocks to show that a bright elongated X-ray and radio feature extending 10'' behind the pulsar represents the surface of the wind termination shock. The X-ray and radio "trails" seen in other pulsar bow shocks may similarly represent the surface of the termination shock, rather than particles in the postshock flow as is usually argued. The tail of the Mouse contains two components: a relatively broad region seen only at radio wavelengths, and a narrow region seen in both radio and X-rays. We propose that the former represents material flowing from the wind shock ahead of the pulsar's motion, while the latter corresponds to more weakly magnetized material streaming from the backward termination shock. This study represents the first consistent attempt to apply our understanding of "Crab-like" nebulae to the growing group of bow shocks around high-velocity pulsars.
description: 19 pages of text, plus 9 embedded EPS figures, uses emulateapj.cls . Minor changes following referee's report. ApJ, in press
Super-Schwarzians via nonlinear realizations
Creators: name: Galajinsky, Anton
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The N=1 and N=2 super-Schwarzian derivatives were originally introduced by physicists when computing a finite superconformal transformation of the super stress-energy tensor underlying a superconformal field theory. Mathematicians like to think of them as the cocycles describing central extensions of Lie superalgebras. In this work, a third possibility is discussed which consists in applying the method of nonlinear realizations to osp(1|2) and su(1,1|1) superconformal algebras. It is demonstrated that the super-Schwarzians arise quite naturally, if one decides to keep the number of independent Goldstone superfields to a minimum.
description: V2: 14 pages; presentation improved in the introductory and concluding sections, two refs. added; the version to appear in JHEP
Pygmaleptostylus pygmaeus
Creators: name: Monné, Miguel A.
Publisher: name: Zenodo
Year: 2005
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Cerambycidae
Pygmaleptostylus
Pygmaleptostylus pygmaeus

description: 1. Pygmaleptostylus pygmaeus (Fisher, 1926)
Type locality — Cuba, Cayamas. (USNM). Distribution — Cuba.
 Leptostylus pygmaeus Fisher, 1926a: 24; Zayas, 1975: 250.
 Pygmaleptostylus pygmaeus; Gilmour, 1963a: 75; Chemsak et al., 1992: 145 (cat.).
  Sciadosoma Melzer, 1934
 Sciadosoma Melzer, 1934a: 102.
 Type­species — Sciadosoma umbrosum Melzer, 1934 (monotypy and original designation).
description: Published as part of Monné, Miguel A., 2005, Catalogue of the Cerambycidae (Coleoptera) of the Neotropical Region. Part II. Subfamily Lamiinae, pp. 1-760 in Zootaxa 1023 (1) on pages 1-760, DOI: 10.11646/zootaxa.946.1.1, http://zenodo.org/record/5049553
The
The Use of Time-Series Analysis in Examining Food Safety Issues: The Case of the Peanut Butter Recall
Creators: name: Bakhtavoryan, Rafael
name: Capps, Oral
name: Salin, Victoria
name: Aramayis Dallakyan
name: Bakhtavoryan, Rafael
name: Capps, Oral
name: Salin, Victoria
name: Aramayis Dallakyan
Publisher: name: Unknown
Year: 2018
Subjects: subject: Agribusiness
subject: Agricultural and Food Policy
subject: Food Consumption/Nutrition/Food Safety
subject: Directed Acyclic Graphs
subject: Peanut Butter
subject: Recall
subject: Vector Error Correction Model

description: This study presents a time-series analysis of the demand for peanut butter in the wake of the product recall involving Peter Pan and Great Value brands. A 2-lag directed acyclic graphs/Bernanke vector error correction model was estimated using weekly time-series data. The outbreak variable was negatively related to the demand for peanut butter, supporting the hypothesis that foodborne illness reduces consumer demand for a food product category. Hence, time-series models should be complementary to structural/econometric models in examining the impacts of food safety incidents as a check on the robustness of the results.
Food and Nutrition Security in the FOODSECURE Scenarios
Creators: name: Shutes, Lindsay
name: Valin, Hugo
name: Stehfest, Elke
name: Van Dijk, Michiel
name: Kuiper, Marikuper
name: Van Meijl, Hans
name: Tabeau, Andrzej
name: Verma, Minka
name: Oudendag, Diti
name: Van Zeist, Willem-Jan
name: Havlik, Petr
name: Shutes, Lindsay
name: Valin, Hugo
name: Stehfest, Elke
name: Van Dijk, Michiel
name: Kuiper, Marikuper
name: Van Meijl, Hans
name: Tabeau, Andrzej
name: Verma, Minka
name: Oudendag, Diti
name: Van Zeist, Willem-Jan
name: Havlik, Petr
Publisher: name: Unknown
Year: 2017
Subjects: Food Consumption/Nutrition/Food Safety
Food Security and Poverty

description: Even in a world characterized by inequality, global food security can improve up to 2050. However, on average, more equal worlds improve food and nutrition security over a wider range of FNS indicators.
Wavelet Correlation Coefficient of 'strongly correlated' financial time series
Creators: name: Razdan, Ashok
Publisher: name: arXiv
Year: 2003
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Statistical Finance (q-fin.ST)
subject: FOS: Physical sciences
subject: FOS: Economics and business

description: In this paper we use wavelet concepts to show that correlation coefficient between two financial data's is not constant but varies with scale from high correlation value to strongly anti-correlation value This studies is important because correlation coefficient is used to quantify degree of independence between two variables. In econophysics correlation coefficient forms important input to evolve hierarchial tree and minimum spanning tree of financial data.
description: physica A (in press)
The FOODSECURE Toolbox for integrated assessment and projections of food and nutrition security towards 2050
Creators: name: Shutes, Lindsay
name: Stehfest, Elke
name: Valin, Hugo
name: Shutes, Lindsay
name: Stehfest, Elke
name: Valin, Hugo
Publisher: name: Unknown
Year: 2017
Subjects: Food Consumption/Nutrition/Food Safety
Food Security and Poverty

description: The FOODSECURE modelling toolbox has a unique ability to assess food availability, food access and dietary change at household level under the impacts of climate change, in one consistent framework. In the FOODSECURE Navigator, combined modelling results are presented for an integrated MAGNET-IMAGE framework and the GLOBIOM model.
On a degenerate elliptic problem arising in the least action principle for Rayleigh-Taylor subsolutions
Creators: name: Gebhard, Björn
name: Hirsch, Jonas
name: Kolumbán, József J.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: We address a degenerate elliptic variational problem arising in the application of the least action principle to averaged solutions of the inhomogeneous Euler equations in Boussinesq approximation emanating from the horizontally flat Rayleigh-Taylor configuration. We give a detailed derivation of the functional starting from the differential inclusion associated with the Euler equations, i.e. the notion of an averaged solution is the one of a subsolution in the context of convex integration, and illustrate how it is linked to the generalized least action principle introduced by Brenier in \cite{Brenier89,Brenier18}. Concerning the investigation of the functional itself, we use a regular approximation in order to show the existence of a minimzer enjoying partial regularity, as well as other properties important for the construction of actual Euler solutions induced by the minimizer. Furthermore, we discuss to what extent such an application of the least action principle to subsolutions can serve as a selection criterion.
description: 53 pages
Sporetus abstrusus Melzer 1935
Creators: name: Monné, Miguel A.
Publisher: name: Zenodo
Year: 2005
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Cerambycidae
Sporetus
Sporetus abstrusus

description: 1. Sporetus abstrusus Melzer, 1935
Type locality — Brazil, Santa Catarina: Mafra. (MZSP). Distribution — Brazil (Santa Catarina), Paraguay.
 Sporetus abstrusus Melzer, 1935: 203; Zikán & Wygodzinsky, 1948: 66 (type); Monné, 1998b: 29, fig. 3.
description: Published as part of Monné, Miguel A., 2005, Catalogue of the Cerambycidae (Coleoptera) of the Neotropical Region. Part II. Subfamily Lamiinae, pp. 1-760 in Zootaxa 1023 (1) on pages 1-760, DOI: 10.11646/zootaxa.946.1.1, http://zenodo.org/record/5049553
Flocking in One Dimension: Asters and Reversals
Creators: name: Benvegnen, Brieuc
name: Chaté, Hugues
name: Krapivsky, Pavel
name: Tailleur, Julien
name: Solon, Alexandre
Publisher: name: arXiv
Year: 2022
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We study the one-dimensional active Ising model in which aligning particles undergo diffusion biased by the signs of their spins. The phase diagram obtained varying the density of particles, their hopping rate and the temperature controlling the alignment shows a homogeneous disordered phase but no homogeneous ordered one, as well as two phases with localized dense structures. In the flocking phase, large ordered aggregates move ballistically and stochastically reverse their direction of motion. In what we termed the "aster" phase, dense immobile aggregates of opposite magnetization face each other, exchanging particles, without any net motion of the aggregates. Using a combination of numerical simulations and mean-field theory, we study the evolution of the shapes of the flocks, the statistics of their reversal times, and their coarsening dynamics. Solving exactly for the zero-temperature dynamics of an aster allows us to understand their coarsening, which shows extremal dynamics, while mean-field equations account for their shape.
description: 19 pages, 23 figures
A note on semi-infinite program bounding methods
Creators: name: Harwood, Stuart M.
name: Papageorgiou, Dimitri J.
name: Trespalacios, Francisco
Publisher: name: arXiv
Year: 2019
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics
subject: 90C34

description: Semi-infinite programs are a class of mathematical optimization problems with a finite number of decision variables and infinite constraints. As shown by Blankenship and Falk (Blankenship and Falk. "Infinitely constrained optimization problems." Journal of Optimization Theory and Applications 19.2 (1976): 261-281.), a sequence of lower bounds which converges to the optimal objective value may be obtained with specially constructed finite approximations of the constraint set. In (Mitsos. "Global optimization of semi-infinite programs via restriction of the right-hand side." Optimization 60.10-11 (2011): 1291-1308.), it is claimed that a modification of this lower bounding method involving approximate solution of the lower-level program yields convergent lower bounds. We show with a counterexample that this claim is false, and discuss what kind of approximate solution of the lower-level program is sufficient for correct behavior.
Understanding star formation in molecular clouds IV. Column density PDFs from quiescent to massive molecular clouds
Creators: name: Schneider, N.
name: Ossenkopf-Okada, V.
name: Clarke, S.
name: Klessen, R. S.
name: Kabanovic, S.
name: Veltchev, T.
name: Bontemps, S.
name: Dib, S.
name: Csengeri, T.
name: Federrath, C.
name: Di Francesco, J.
name: Motte, F.
name: Andre, Ph.
name: Arzoumanian, D.
name: Beattie, J. R.
name: Bonne, L.
name: Didelon, P.
name: Elia, D.
name: Koenyves, V.
name: Kritsuk, A.
name: Ladjelate, B.
name: Myers, Ph.
name: Pezzuto, S.
name: Robitaille, J. F.
name: Roy, A.
name: Seifried, D.
name: Simon, R.
name: Soler, J.
name: Ward-Thompson, D.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present N-PDFs of 29 Galactic regions obtained from Herschel imaging at high angular resolution, covering diffuse and quiescent clouds, and those showing low-, intermediate-, and high-mass star formation (SF), and characterize the cloud structure using the Delta-variance tool. The N-PDFs are double-log-normal at low column densities, and display one or two power law tails (PLTs) at higher column densities. For diffuse, quiescent, and low-mass SF clouds, we propose that the two log-normals arise from the atomic and molecular phase, respectively. For massive clouds, we suggest that the first log-normal is built up by turbulently mixed H2 and the second one by compressed (via stellar feedback) molecular gas. Nearly all clouds have two PLTs with slopes consistent with self-gravity, where the second one can be flatter or steeper than the first one. A flatter PLT could be caused by stellar feedback or other physical processes that slow down collapse and reduce the flow of mass toward higher densities. The steeper slope could arise if the magnetic field is oriented perpendicular to the LOS column density distribution. The first deviation point (DP), where the N-PDF turns from log-normal into a PLT, shows a clustering around values of a visual extinction of AV (DP1) around 2-5. The second DP, which defines the break between the two PLTs, varies strongly. Using the Delta-variance, we observe that the AV value, where the slope changes between the first and second PLT, increases with the characteristic size scale in the variance spectrum. We conclude that at low column densities, atomic and molecular gas is turbulently mixed, while at high column densities, the gas is fully molecular and dominated by self-gravity. The best fitting model N-PDFs of molecular clouds is thus one with log-normal low column density distributions, followed by one or two PLTs.
description: Astronomy and Astrophysics in presss
Weak cosmic censorship conjecture for Kerr-Taub-NUT black hole with test scalar field and particle
Creators: name: Yang, Si-Jiang
name: Chen, Jing
name: Wan, Jun-Jie
name: Wei, Shao-Wen
name: Liu, Yu-Xiao
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Motivated by the recent researches of black holes with NUT charge, we investigate the validity of the weak cosmic censorship conjecture for Kerr-Taub-NUT black hole with a test massive scalar field and a test particle, respectively. For the scalar field scattering gedanken experiment, we consider an infinitesimal time interval process. The result shows that both extremal and near-extremal Kerr-Taub-NUT black holes cannot be over-spun. For the test particle thought experiment, the study suggests that extremal Kerr-Taub-NUT black hole cannot be over-spun; while near-extremal Kerr-Taub-NUT black hole can be over-spun. By comparing the two methods, the results indicate the time interval for particles crossing the black hole horizon might be important for consideration of the weak cosmic censorship conjecture.
description: 11 pages, 1 figure
Proposal of a Simple Method to Estimate Neutrino Oscillation Probability and CP Violation in Matter
Creators: name: Takamura, Akira
name: Kimura, Keiichi
name: Yokomakura, Hidekazu
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study neutrino oscillation within the framework of three generations in matter. We propose a simple method to approximate the coefficients A, B and C which do not depend on the CP phase δin the oscillation probability P(ν_e \to ν_μ)=A\cos δ+ B\sin δ+C. An advantage of our method is that an approximate formula of the coefficients A, B and C in arbitrary matter {\it without the usual first order perturbative calculations} of the small parameter Δm_{21}^2/Δm_{31}^2 or \sin θ_{13} can be derived. Furthermore we show that all the approximate formulas for low, intermediate and high energy regions given by other authors in constant matter can be easily derived from our formula. It means that our formula is applicable over a wide energy region.
description: 15 pages, 9 figures, accepted version in PLB
Circle actions and Z/k-manifolds
Creators: name: Zhang, Weiping
Publisher: name: arXiv
Year: 2003
Subjects: subject: Differential Geometry (math.DG)
subject: Algebraic Topology (math.AT)
subject: FOS: Mathematics
subject: 57R, 58G

description: We establish an S^1-equivariant index theorem for Dirac operators on Z/k-manifolds. As an application, we generalize the Atiyah-Hirzebruch vanishing theorem for S^1-actions on closed spin manifolds to the case of Z/k-manifolds.
description: 6 pages. Minor changes for the published version