cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Ligaya Domingo - Seattle COVID-19 Oral History Project - Oral History Transcript
Creators: name: Labor Archives of Washington
Publisher: name: Labor Archives of Washington
Year: 2021

description: Oral History interview with Ligaya Domingo, Racial Justice and Education Director for SEIU 1199, and member of the Asian Pacific Islander Caucus and Asian Pacific American Labor Alliance about working during the COVID-19 pandemic. Completed on December 27, 2021. This interview is part of the Working in the Time of COVID-19 Oral History Project by the Labor Archives of Washington, University of Washington Libraries. Laborarchives.org

This item contains three parts: oral history audio/video file, caption file (.srt), and full text transcription (.pdf).
Understanding the X-ray spectral curvature of Mkn 421 using broadband AstroSat observations
Creators: name: Hota, Jyotishree
name: Shah, Zahir
name: Khatoon, Rukaiya
name: Misra, Ranjeev
name: Pradhan, Ananta C.
name: Gogoi, Rupjyoti
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present a time-resolved X-ray spectral study of the high energy peaked blazar Mkn 421 using simultaneous broadband observations from the LAXPC and SXT instruments on-board AstroSat. The ~ 400 ksec long observation taken during 3-8 January, 2017 was divided into segments of 10 ksecs. Each segment was fitted using synchrotron emission from particles whose energy distribution was represented by a log-parabola model. We also considered particle energy distribution models where (i) the radiative cooling leads to a maximum energy (ξ max model), (ii) the system has energy dependent diffusion (EDD) and (iii) has energy dependent acceleration (EDA). We found that all these models describe the spectra, although the EDD and EDA models were marginally better. Time resolved spectral analysis allowed for studying the correlation between the spectral parameters for different models. In the simplest and direct approach, the observed correlations are not compatible with the predictions of the ξ max model. While the EDD and EDA models do predict the correlations, the values of the inferred physical parameters are not compatible with the model assumptions. Thus, we show that spectrally degenerate models, can be distinguished based on spectral parameter correlations (especially those between the model normalization and spectral shape ones) making time-resolved spectroscopy a powerful tool to probe the nature of these systems.
description: Accepted for publication in MNRAS
Digital twin in epidemic: How does a smart city cope with novel challenges through digital simulation, automation and visualisation
Creators: name: Premier, Alessandro
Publisher: name: The University of Auckland
Year: 2021
Subjects: subject: 120105 Architecture Management
subject: FOS: Civil engineering
subject: 120199 Architecture not elsewhere classified

description: This item was presented in Auckland at the: Rethinking Sustainable Pacific Rim Territories. Proceedings of the 2020 APRU Sustainable Cities and Landscapes Hub PhD SymposiumDate: 14-18/12/20Editors: Paola Boarin, Errol Haarhoff, Manfredo Manfredini, Mohsen Mohammadzadeh, Alessandro Premier

ISBN: 978-0-473-53616-9
ABSTRACTAt the beginning of the 21st century, as rapid urbanization becomes a global phenomenon, smart city becoming more and more a future-proof solution for cities with rising unprecedented challenges of congested infrastructure, population density, energy inefficiency and global public health. In this context, digital twin was initially introduced by Dr Michael Grieves in 2002 as a key enabler technology to improve product manufacture and complex systems, and later bloomed as a new concept to promote better design, system integration and troubleshooting of the physical city through simulation, automation and visualisation. This paper, in aiming to understand how digital twin was rapidly adopted by a number of pioneer entrepreneurs, cities and nations, provides a narrative and categorical perspective of digital twin appearance in literature and explores the extents where a real-time cyber presentation of the city can support mediating urban issues within the context of global pandemic. In result, a longitudinal section of digital twin and smart city development has been introduced, including the evolvement of digital model, digital shadows to digital twin, as well as the rising interest of academia and private sector to the technology.
title: Zart Dombourian-Eby - Musical Work in the Time of COVID-19 - Oral History Transcript
Creators: name: Labor Archives of Washington
Publisher: name: Labor Archives of Washington
Year: 2020

description: Oral History interview with Zart Dombourian-Eby, Seattle Symphony flutist-piccolist, educator, and member of Seattle Symphony and Opera Players' Organization about musical work during the COVID-19 pandemic completed June 2020. This interview is part of the Working in the Time of COVID-19 Oral History Project by the Labor Archives of Washington, University of Washington Libraries. Laborarchives.org

This item contains three parts: oral history audio/video file, caption file (.srt), and full text transcription (.pdf).
Laser Powder Bed Fusion of anisotropic Nd-Fe-B bonded magnets utilizing an in situ mechanical alignment approach
Creators: name: Schäfer, Kilian
name: Fim, Rafael Gitti Tortoretto
name: Maccari, Fernando
name: Braun, Tobias
name: Riegg, Stefan
name: Skokov, Konstantin
name: Koch, David
name: Bruder, Enrico
name: Radulov, Iliya
name: Ahrens, Carlos Henrique
name: Wendhausen, Paulo Antônio Pereira
name: Gutfleisch, Oliver
Publisher: name: arXiv
Year: 2023
Subjects: subject: Applied Physics (physics.app-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Nd-Fe-B bonded magnets are an important class of permanent magnets, employed in many technological sectors. The Additive Manufacturing (AM) processes enables the fabrication of net-shape bonded magnets with complex geometries, allowing to tailor their magnetic stray field specifically for a given application. A crucial challenge to be addressed concerning AM of bonded magnets is the production of magnetically anisotropic components. The common approaches presented in the literature up to now, required a post-printing procedure or the complex integration of a magnetic field source into the AM process. Here, we present a technique to fabricate anisotropic bonded magnets via Laser Powder Bed Fusion (LPBF) by utilizing the mechanical alignment of anisotropic particles in a single step, without the need for a magnetic field source. Anisotropic bonded magnets were fabricated using a mixture of anisotropic Nd-Fe-B powder (MQA-38-14) and polyamide-12 (PA12). This magnetic powder consists of ellipsoidal particles, where the easy magnetization axis is distributed perpendicular to their longest side, which can be exploited to generate magnetic texture. Depending on the particle size used as feedstock, the degree of alignment () can be tailored to a maximum of = 0.78. The fabricated anisotropic bonded magnets exhibited a maximum remanence of Jr = 377 mT and an energy product of (BH)max = 28.6 kJ/m3, respectively.
Quantum ripples in strongly correlated metals
Creators: name: Andrade, E. C.
name: Miranda, E.
name: Dobrosavljevic, V.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We study how well-known effects of the long-ranged Friedel oscillations are affected by strong electronic correlations. We first show that their range and amplitude are significantly suppressed in strongly renormalized Fermi liquids. We then investigate the interplay of elastic and inelastic scattering in the presence of these oscillations. In the singular case of two-dimensional systems, we show how the anomalous ballistic scattering rate is confined to a very restricted temperature range even for moderate correlations. In general, our analytical results indicate that a prominent role of Friedel oscillations is relegated to weakly interacting systems.
description: 4+ pages, 2 figures. Revised version.
title: Clayton Dela Cruz - Pacific Coast Pensioners Association Oral History Project - Oral History Transcript
Creators: name: Labor Archives of Washington
Publisher: name: Labor Archives of Washington
Year: 2018

description: Oral History interview with Clayton Dela Cruz of ILWU Local 142, collected by the Pacific Coast Pensioners Association Oral History Committee. Completed on September 19, 2018. This interview is part of the Pacific Coast Pensioners Association Oral History Project by the International Longshore and Warehouse Union and the Labor Archives of Washington, University of Washington Libraries. Laborarchives.org

This item contains three parts: oral history audio/video file (.mp4), full text transcription (.pdf), and caption track (.srt).
Empirical analysis of the worldwide maritime transportation network
Creators: name: Hu, Yihong
name: Zhu, Daoli
Publisher: name: arXiv
Year: 2008
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences

description: In this paper we present an empirical study of the worldwide maritime transportation network (WMN) in which the nodes are ports and links are container liners connecting the ports. Using the different representation of network topology namely the space $L$ and $P$, we study the statistical properties of WMN including degree distribution, degree correlations, weight distribution, strength distribution, average shortest path length, line length distribution and centrality measures. We find that WMN is a small-world network with power law behavior. Important nodes are identified based on different centrality measures. Through analyzing weighted cluster coefficient and weighted average nearest neighbors degree, we reveal the hierarchy structure and "rich-club" phenomenon in the network.
description: 10 pages, 11 figures
title: Forgetting as a consequence of retrieval suppression: a meta-analytic review of the think/no-think paradigm
Creators: name: Clark, Chris
Publisher: name: Memorial University of Newfoundland
Year: 2021

description: The present thesis used meta-analytic methods to define the typical magnitude of the suppression induced forgetting (SIF) effect produced by the Think/No-Think paradigm as well as assess several moderators. A literature search was conducted using seven online databases, review papers and discussion with experts in the field to identify 82 relevant studies. Using Bayesian multi-level modelling techniques to provide a synthesis of the existing literature it was determined that the typical Think/No-Think study produced a small SIF effect. This means that the Think/No-Think paradigm decreases recall accuracy for no-think items relative to baseline items, with broad heterogeneity in the observed effect across studies depending on the methods. Additionally, it was determined that the SIF effect was larger (a) in studies using same probe (SP) tests than independent probe (IP) tests; (b) when the data were conditionalized on successful learning of the stimuli pairs during the test-feedback phase; (c) when participants were given more specific instructions on how to avoid thinking of the no-think items, and; (d) at higher numbers of repetitions (for unconditionalized data). Neither stimulus emotional content nor stimuli type impacted the magnitude of SIF. These findings provide strong evidence of the viability of the SIF effect while also informing future theoretical discussions concerning its mechanisms. Several recommendations are made for future Think/No-Think studies concerning sample size and methodological decisions in an effort to improve the precision and reliability of findings.
title: Charles Dean - Pacific Coast Pensioners Association Oral History Project - Oral History Transcript
Creators: name: Labor Archives of Washington
Publisher: name: Labor Archives of Washington
Year: 2013

description: Oral History interview with Charles Dean of ILWU Local 19, collected by the Pacific Coast Pensioners Association Oral History Committee. Completed on September 16, 2013. This interview is part of the Pacific Coast Pensioners Association Oral History Project by the International Longshore and Warehouse Union and the Labor Archives of Washington, University of Washington Libraries. Laborarchives.org

This item contains three parts: oral history audio/video file, full text transcription (.pdf), and caption track (.srt).
Micro-mobility use in times of uncertainty: An Auckland case study
Creators: name: Pinglin Chen
Publisher: name: The University of Auckland
Year: 2021
Subjects: subject: 120508 Urban Design
subject: FOS: Social and economic geography
subject: 120599 Urban and Regional Planning not elsewhere classified

description: This item is part of: Boarin, P., Haarhoff, E., Manfredini, M., Mohammadzadeh, M., Premier, A., (2021). Rethinking Sustainable Pacific Rim Territories. Proceedings of the 2020 APRU Sustainable Cities and Landscapes Hub PhD Symposium, Future Cities Research Hub, School of Architecture and Planning of the University of Auckland. ISBN: 978-0-473-53616-9
ABSTRACTThe current worldwide COVID-19 pandemic has challenged urban mobilities of all kinds. Micro-mobility had been long recognised as an alternative transport mode for short-distance trips, but has been largely ignored in New Zealand cities in response to safe and alternative urban mobilities during the pandemic. Using Auckland in New Zealand as a case study, this paper explores micro-mobility devices used during the pandemic. It shows that in Auckland, the reactive way of comprehending micro-mobility in the city created confusion about the current and future use of such devices and services, impeded infrastructure management, especially the pedestrian environment, and challenged the right to the public realm. Apart from future research projects, this paper suggests that, with clear policies and regulations, not only can micro-mobility be an additional option for frontline workers and citizens during a time of uncertainty, but they can also be part of the integrated transport system and an alternative for personal and short-distance trips that are mostly undertaken by cars. This paper will further contribute to UN’s Sustainable development goal 9, which advocates the resilient infrastructure, and promote sustainable industrialisation and technological innovation.
Magneto-active composites with locally tailored stiffness produced by laser powder bed fusion
Creators: name: Schäfer, Kilian
name: Lutzi, Matthias
name: Khan, Muhammad Bilal
name: Schäfer, Lukas
name: Skokov, Konstantin
name: Dirba, Imants
name: Bruns, Sebastian
name: Valizadeh, Iman
name: Weeger, Oliver
name: Hartmann, Claas
name: Kupnik, Mario
name: Adabifiroozjaei, Esmaeil
name: Molina-Luna, Leopoldo
name: Gutfleisch, Oliver
Publisher: name: arXiv
Year: 2023
Subjects: subject: Applied Physics (physics.app-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Additive manufacturing technologies enable the production of complex and bioinspired shapes using magneto-responsive materials, which find diverse applications in soft robotics. Particularly, the development of composites with controlled gradients in mechanical properties offers new prospects for advancements in magneto-active materials. However, achieving such composites with gradients typically involves complex multi-material printing procedures. In this study, a single-step laser powder bed fusion (LPBF) process is proposed that enables precise local adjustments of the mechanical stiffness within magneto-active composites. By utilizing distinct laser parameters in specific regions of a composite containing thermoplastic polyurethane and atomized magnetic powder derived from hard magnetic Nd-Fe-B, the stiffness of the composite can be modified within the range of 2 to 22 MPa. Various magneto-responsive actuators with locally tailored stiffness are fabricated and their magnetic performance is investigated. The enhanced response exhibited by actuators with locally adjusted mechanical properties in comparison to their homogeneous counterparts with identical geometries is shown. As a demonstration of a biomedical application, a magnetically responsive stent with localized adjustment is presented with the ability to meet specific requirements in terms of geometry and local stiffness based on an individual's anatomy and disease condition. The proposed method presents an approach for creating functionally graded materials using LPBF, not only for magneto-active materials but also for several other structural and functional materials.
Pantigo Windmill
Creators: name: Weber, Harvey A.
Publisher: name: Unknown
Year: 1970
Subjects: Photographs
Photos
Historic buildings
East Hampton
Structures
Windmills
Mills
Pantigo Mill

description: This image shows Pantigo Windmill through some tree branches nearby. This image was taken by photographer Harvey A. Weber (1917-1991) and is part of the East Hampton’s Heritage Photo Collection.
description: Images within East Hampton Heritage Photo Collection seem to have been taken or collected in relation to the East Hampton Heritage project, but not all of them were included in the final publication. Several photographer are included in this collection.
Femtoscopy in Relativistic Heavy Ion Collisions and its Relation to Bulk Properties of QCD Matter
Creators: name: Pratt, Scott
name: Vredevoogd, Joshua
Publisher: name: arXiv
Year: 2008
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Using a viscous hydrodynamic model coupled to a hadronic cascade code, numerous features of the dynamics and equilibrium properties are explored for their impact on femtoscopic measurements. The equation of state, viscous parameters and initial conditions are investigated. We find that femtoscopy is affected by numerous model features at the 10% level, and that by including features and adjusting unknown parameters, one can explain experimental source size measurements to better than 10%.
description: 18 pages, 9 figures (corrected version, Fig. 7 of previous version had error in caption)
Gedanken experiments at high-order approximation: Kerr black hole cannot be overspun
Creators: name: Sang, Aofei
name: Jiang, Jie
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Sorce and Wald proposed a new version of gedanken experiments to examine the weak cosmic censorship conjecture (WCCC) in Kerr-Newmann black holes. However, their discussion only includes the second-order approximation of perturbation and there exists an optimal condition such that the validity of the WCCC is determined by the higher-order approximations. Therefore, in this paper, we extended their discussions into the high-order approximations to study the WCCC in a nearly extremal Kerr black hole. After assuming that the spacetime satisfies the stability condition and the perturbation matter fields satisfy the null energy condition, based on the Noether charge method by Iyer and Wald, we completely calculate the first four order perturbation inequalities and discuss the corresponding gedanken experiment to overspin the Kerr black hole. As a result, we find that the nearly extremal Kerr black holes cannot be destroyed under the fourth-order approximation of perturbation. Then, by using the mathematical induction, we strictly prove the $n$th order perturbation inequality when the first $(n-1)$ order perturbation inequalities are saturated. Using these results, we discuss the first $100$ order approximation of the gedanken experiments and find that the WCCC in Kerr black hole is valid under the higher-order approximation of perturbation. Our investigation implies that the WCCC might be strictly satisfied in Kerr black holes under the perturbation level.
description: 21 pages, 2 figures
A geostatistical analysis of multiscale metallicity variations in galaxies [I]: Introduction and comparison of high-resolution metallicity maps to an analytic metal transport model
Creators: name: Metha, Benjamin
name: Trenti, Michele
name: Chu, Tingjin
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Thanks to recent advances in integral field spectroscopy (IFS), modern surveys of nearby galaxies are capable of resolving metallicity maps of Hii regions down to scales of ~50pc. However, statistical analysis of these metallicity maps has seldom gone beyond fitting basic linear regressions and comparing parameters to global galaxy properties. In this paper (the first of a series), we introduce techniques from spatial statistics that are well suited for detailed analysis of both small- and large-scale metallicity variations within the interstellar media (ISMs) of local galaxies. As a first application, we compare the observed structure of small-scale metallicity fluctuations within 7 local galaxies observed by the PHANGS collaboration to predictions from a stochastic, physically motivated, analytical model developed by Krumholz & Ting. We show that while the theoretical model underestimates the amount of correlated scatter in the galactic metallicity distributions by 3-4 orders of magnitude, it provides good estimates of the physical scale of metallicity correlations. We conclude that the ISM of local spiral galaxies is far from homogeneous, with regions of size ~1 kpc showing significant departures from the mean metallicity at each galactocentric radius.
description: 22 pages, 11 figures, including supplementary material. Accepted for publication in MNRAS
The Transitional Stripped-Envelope SN 2008ax: Spectral Evolution and Evidence for Large Asphericity
Creators: name: Chornock, R.
name: Filippenko, A. V.
name: Li, W.
name: Marion, G. H.
name: Foley, R. J.
name: Modjaz, M.
name: Rafelski, M.
name: Becker, G. D.
name: de Vries, W. H.
name: Garnavich, P.
name: Jorgenson, R. A.
name: Lynch, D. K.
name: Malec, A. L.
name: Moran, E. C.
name: Murphy, M. T.
name: Rudy, R. J.
name: Russell, R. W.
name: Silverman, J. M.
name: Steele, T. N.
name: Stockton, A.
name: Wolfe, A. M.
name: Woodward, C. E.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Supernova (SN) 2008ax in NGC 4490 was discovered within hours after shock breakout, presenting the rare opportunity to study a core-collapse SN beginning with the initial envelope-cooling phase immediately following shock breakout. We present an extensive sequence of optical and near-infrared spectra, as well as three epochs of optical spectropolarimetry. Our initial spectra, taken two days after shock breakout, are dominated by hydrogen Balmer lines at high velocity. However, by maximum light, He I lines dominated the optical and near-infrared spectra, which closely resembled those of normal Type Ib supernovae (SNe Ib) such as SN 1999ex. This spectroscopic transition defines Type IIb supernovae, but the strong similarity of SN 2008ax to normal SNe Ib beginning near maximum light, including an absorption feature near 6270A due to H-alpha at high velocities, suggests that many objects classified as SNe Ib in the literature may have ejected similar amounts of hydrogen as SN 2008ax, roughly a few x 0.01 M_sun. Early-time spectropolarimetry (6 and 9 days after shock breakout) revealed strong line polarization modulations of 3.4% across H-alpha, indicating the presence of large asphericities in the outer ejecta. The continuum shares a common polarization angle with the hydrogen, helium, and oxygen lines, while the calcium and iron absorptions are oriented at different angles. This is clear evidence of deviations from axisymmetry even in the outer ejecta. Intrinsic continuum polarization of 0.64% only nine days after shock breakout shows that the outer layers of the ejecta were quite aspherical. A single epoch of late-time spectropolarimetry, as well as the shapes of the nebular line profiles, demonstrate that asphericities extended from the outermost layers all the way down to the center of this SN. [Abridged]
description: 24 pages, 21 figures, 4 tables, appendix, minor revisions to match version accepted by ApJ
Twisted bilayer graphene at charge neutrality: competing orders of SU(4) Dirac fermions
Creators: name: Parthenios, Nikolaos
name: Classen, Laura
Publisher: name: arXiv
Year: 2023
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study possible patterns for spontaneous symmetry breaking in a Dirac fermion model, which is applicable to twisted bilayer graphene at charge neutrality. We show how a chiral SU(4) symmetry emerges and construct the corresponding low-energy model that includes a Fierz-complete set of symmetry-allowed four-fermion interactions. We employ an unbiased renormalization group treatment to identify the critical points that describe transitions into different ordered phases. The resulting phase diagram depends on the number of fermion flavours and we show that the coupling between ordering channels prevents many of the possible mean-field orders from being accessible at relevant, small flavour numbers. We argue that, as a consequence, twisted bilayer graphene is governed by a quantum Hall state or an SU(4) manifold of insulating spin-valley orders with emergent Lorentz symmetry that contains inter-valley coherent, spin Hall, and valley Hall states. We study how SU(4)-breaking perturbations affect the accessibility and can additionally stabilize symmetry-broken (semi-)metallic states.
description: FInal version accepted in PRB, 11+9 pages, 5+5 figures
Universality of the negativity in the Lipkin-Meshkov-Glick model
Creators: name: Wichterich, H.
name: Vidal, J.
name: Bose, S.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The entanglement between noncomplementary blocks of a many-body system, where a part of the system forms an ignored environment, is a largely untouched problem without analytic results. We rectify this gap by studying the logarithmic negativity between two macroscopic sets of spins in an arbitrary tripartition of a collection of mutually interacting spins described by the Lipkin-Meshkov-Glick Hamiltonian. This entanglement measure is found to be finite and universal at the critical point for any tripartition whereas it diverges for a bipartition. In this limiting case, we show that it behaves as the entanglement entropy, suggesting a deep relation between the scaling exponents of these two independently defined quantities which may be valid for other systems.
description: 5 pages, 2 figures, published version
Multidimensional Integrable Deformations of Integrable PDEs
Creators: name: Casati, Matteo
name: Zhang, Danda
Publisher: name: arXiv
Year: 2023
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 37K10

description: In a recent series of papers by Lou et al., it was conjectured that higher dimensional integrable equations may be constructed by utilizing some conservation laws of (1 + 1)-dimensional systems. We prove that the deformation algorithm introduced in arXiv:2211.06844, applied to Lax integrable $(1+1)$-dimensional systems, produces Lax integrable higher imensional systems. The same property is enjoyed by the generalized deformation algorithm introduced in [Lou,Jia,Hao. Chinese Phys. Lett. 2023]; we present a novel example of a $(2+1)$-dimensional deformation of KdV equation obtained by generalized deformation. The deformed systems obtained by such procedure, however, pose a serious challenge because most of the mathematical structures that the $(1+1)$-dimensional systems possess is lost.
description: 9 pages
Micro-mobility use in times of uncertainty: An Auckland case study
Creators: name: Premier, Alessandro
Publisher: name: The University of Auckland
Year: 2021
Subjects: subject: 120105 Architecture Management
subject: FOS: Civil engineering
subject: 120199 Architecture not elsewhere classified

description: This item was presented in Auckland at the: Rethinking Sustainable Pacific Rim Territories. Proceedings of the 2020 APRU Sustainable Cities and Landscapes Hub PhD SymposiumDate: 14-18/12/20Editors: Paola Boarin, Errol Haarhoff, Manfredo Manfredini, Mohsen Mohammadzadeh, Alessandro Premier

ISBN: 978-0-473-53616-9
ABSTRACTThe current worldwide COVID-19 pandemic has challenged urban mobilities of all kinds. Micro-mobility had been long recognised as an alternative transport mode for short-distance trips, but has been largely ignored in New Zealand cities in response to safe and alternative urban mobilities during the pandemic. Using Auckland in New Zealand as a case study, this paper explores micro-mobility devices used during the pandemic. It shows that in Auckland, the reactive way of comprehending micro-mobility in the city created confusion about the current and future use of such devices and services, impeded infrastructure management, especially the pedestrian environment, and challenged the right to the public realm. Apart from future research projects, this paper suggests that, with clear policies and regulations, not only can micro-mobility be an additional option for frontline workers and citizens during a time of uncertainty, but they can also be part of the integrated transport system and an alternative for personal and short-distance trips that are mostly undertaken by cars. This paper will further contribute to UN’s Sustainable development goal 9, which advocates the resilient infrastructure, and promote sustainable industrialisation and technological innovation.
Coupled Helmholtz Equations : Chirped Solitary Waves
Creators: name: Saha, Naresh
name: Roy, Barnana
name: Khare, Avinash
Publisher: name: arXiv
Year: 2021
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: We investigate the existence and stability properties of the chirped gray and anti-dark solitary waves within the framework of coupled cubic nonlinear Helmholtz equation in the presence of self steepening and self frequency shift. We show that for a particular combination of the self steepening and the self frequency shift, there is not only chirping but also chirp reversal. Specifically, the associated nontrivial phase has two intensity dependent terms, one varies as the reciprocal of the intensity while the other, which depends on non-Kerr nonlinearities, is directly proportional to the intensity. This causes chirp reversal across the solitary wave profile. A different combination of non-Kerr terms leads to chirping but no chirp reversal.The influence of nonparaxial parameter on physical quantities such as intensity, speed and pulse-width of the solitary waves is studied too. It is found that the speed of the solitary waves can be tuned by altering the nonparaxial parameter. Stable propagation of these nonparaxial solitary waves is achieved by an appropriate choice of parameters.
description: To appear in Chaos: An Interdisciplinary Journal of Nonlinear Science
Kinematic Analysis of the vertebra of an eel like robot
Creators: name: Chablat, Damien
Publisher: name: arXiv
Year: 2008
Subjects: subject: Robotics (cs.RO)
subject: Classical Physics (physics.class-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: The kinematic analysis of a spherical wrist with parallel architecture is the object of this article. This study is part of a larger French project, which aims to design and to build an eel like robot to imitate the eel swimming. To implement direct and inverse kinematics on the control law of the prototype, we need to evaluate the workspace without any collisions between the different bodies. The tilt and torsion parameters are used to represent the workspace.
Constructing an application for the data collection on landscape design planning to physical and mental health
Creators: name: Yueh-Chen Yeh
name: Chang, Chun-Yen
Publisher: name: The University of Auckland
Year: 2021
Subjects: subject: 60306 Evolutionary Impacts of Climate Change
subject: FOS: Biological sciences
subject: 120107 Landscape Architecture
subject: FOS: Civil engineering
subject: 50104 Landscape Ecology
subject: FOS: Earth and related environmental sciences

description: This item is part of: Boarin, P., Haarhoff, E., Manfredini, M., Mohammadzadeh, M., Premier, A., (2021). Rethinking Sustainable Pacific Rim Territories. Proceedings of the 2020 APRU Sustainable Cities and Landscapes Hub PhD Symposium, Future Cities Research Hub, School of Architecture and Planning of the University of Auckland. ISBN: 978-0-473-53616-9

ABSTRACTBackground: For most people, the natural environment is recommended as an affordable health promotion method.Goal: Develop an app to collect people's health information and return people's environmental health prediction scores. The data can also be used in landscape planning and design in the future to design healing fields for people to use.Discussion: Experiment with a preliminary developed application. The research results show that the altitude of Toucheng Farm is slightly higher than that of flat land; when the temperature is low, the heartbeat in the physiological response increases, and the weather and relative humidity of the day will affect the preferences of tourists.Conclusion: Climate and environmental factors affect personal physical and mental health and social distancing strategies caused by the global epidemic this year. The next step of the research is to consider the impact of climate and social distance factors on people's health and incorporate them into the health route system.
Lectures on Landau Hydrodynamics
Creators: name: Wong, Cheuk-Yin
Publisher: name: arXiv
Year: 2008
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Landau hydrodynamics is a plausible description for the evolution of the dense hot matter produced in high-energy heavy-ion collisions. We review the formulation of Landau hydrodynamics to pave the way for its application in high-energy heavy-ion collisions. It is found that Landau's rapidity distribution needs to be modified to provide a better quantitative description. In particular, the rapidity distribution in the center-of-mass system should be more appropriately given as dN/dy \exp{\sqrt{y_b^2-y^2}}, where y_b=\ln{\sqrt{s_NN}/m_p} is the beam nucleon rapidity, instead of Landau's original result of dN/dy({Landau}) \exp{\sqrt{L^2-y^2}} where L=\ln{\sqrt{s_NN}/2m_p}. The modified distribution is compared with the Landau distribution and experimental data. It is found that the modified distribution agrees better with experimental $dN/dy$ data than the Landau distribution and it differs only slightly from the Landau Gaussian distribution dN/dy(Landau-Gaussian) \exp{-y^2/2L}. Past successes of the Gaussian distribution in explaining experimental rapidity data arises, not because it is an approximation of the original Landau distribution, but because it is in fact a close representation of the modified distribution.
description: Lectures presented at the Helmholtz International Summer School, Bogoliubov Laboratory of Theoretical Physics, JINR, Dubna, July 14-26, 2008
Fast geometric gate operation of superconducting charge qubits in circuit QED
Creators: name: Xue, Zheng-Yuan
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A scheme for coupling superconducting charge qubits via a one-dimensional superconducting transmission line resonator is proposed. The qubits are working at their optimal points, where they are immune to the charge noise and possess long decoherence time. Analysis on the dynamical time evolution of the interaction is presented, which is shown to be insensitive to the initial state of the resonator field. This scheme enables fast gate operation and is readily scalable to multiqubit scenario.
Zero-Phonon Line Broadening and Satellite Peaks in Nanowire Quantum Dots: The Role of Piezoelectric Coupling
Creators: name: Weber, Carsten
name: Lindwall, Greta
name: Wacker, Andreas
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We investigate the influence of the one-dimensional character of the phonon modes in a catalytically grown GaAs nanowire on the absorption spectrum of an embedded quantum dot, focusing on the contribution from the piezoelectric coupling. In general, the reduced dimensionality of the phonons leads to spectral side peaks and a zero-phonon line broadening due to the energetically lowest (acoustic) phonon mode. While the deformation potential predominantly couples to radial modes, the piezoelectric interaction can also couple strongly to modes of axial character, leading to additional absorption features. The contribution of the piezoelectric coupling to the zero-phonon line is negligible.
description: 4 pages, 5 figures, to appear in Physica Status Solidi B (simulation parameters and figures changed, minor changes in text)
Formation of quark phases in compact stars and SN explosion
Creators: name: Drago, Alessandro
name: Pagliara, Giuseppe
name: Pagliaroli, Giulia
name: Villante, Francesco Lorenzo
name: Vissani, Francesco
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We describe possible scenarios of quark deconfinement in compact stars and we analyze their astrophysical implications. The quark deconfinement process can proceed rapidly, as a strong deflagration, releasing a huge amount of energy in a short time and generating an extra neutrino burst. If energy is transferred efficiently to the surface, like e.g. in the presence of convective instabilities, this burst could contribute to revitalize a partially failed SN explosion. We discuss how the neutrino observations from SN1987A would fit in this scenario. Finally, we focus on the fate of massive and rapidly rotating progenitors, discussing possible time separations between the moment of the core collapse and the moment of quark deconfinement. This mechanism can be at the basis of the interpretation of gamma ray bursts in which lines associated with heavy elements are present in the spectrum.
description: 9 pages, 3 figures, Proceedings "6th International Conference on Perspectives in Hadronic Physics", May 2008, Trieste
The rural people’s communes in Shandong province, 1958-1965 : a model of social and economic development
Creators: name: Ma, Sen
Publisher: name: University of British Columbia
Year: 2010

description: This study examines the movement to establish and consolidate rural people's communes in China during the period 1958-1965. It concentrates on the development and consolidation of people's communes in the northern province of Shandong. The thesis argues that there are two trends in contemporary theories of Third World Development. One sees the development of Third World countries as a process of economic moves through adoption of advanced western technology and by the transformation of social institutions according to the features of ideal type of the western model. The other suggests that the development of Third World countries is not merely a process of economic growth, but is conditioned both by their respective historical backgrounds and the world-system. It is argued that China subscribes to the latter version of development theory. It is suggested that, historically, Chinese society followed a particular path of development. The western impact on China gradually brought about the disintegration of the traditional society. Chinese development strategy after 1949, especially after the establishment of the people's communes, is distinctive and differs not only from the dominant mode of development in China's past, but also from the modes in advanced societies of western Europe and North America, and the Third World in general. The people's commune is considered as possessing an identifiable structure and subject to a process of growth and change. Its development is seen as a response to basic economic realities and also, to an important degree, to human decision-making. It is argued that the commune system is at the center of China's strategy for rural development. Within the context of Shandong, the development of the people's commune is seen through an analysis of agricultural production, local industry, building of water conservancy, as well as changes in family institutions. The analysis of this study shows that the characteristics of the development of the people's communes during 1958-1965 manifest in two major aspects. First, development planning aims at resolving certain peasant problems which are a heritage of the traditional mode of economic development in China, and to fulfill modernization and some specific ideological goals. Secondly, the development of the people's communes helps to retain the traditional structure of rural community. The latter is essentially found in the features of self-control and self-sufficiency in political and economic life in the people's communes, and also in the development of human relations. The major sources of this study consist of documentary research, i.e., Chinese local and national newspapers of the period under study, and magazines of the same period. Interviews of émigrés were also used as supplementary sources.
Constructing an application for the data collection on landscape design planning to physical and mental health
Creators: name: Premier, Alessandro
Publisher: name: The University of Auckland
Year: 2021
Subjects: subject: 120105 Architecture Management
subject: FOS: Civil engineering
subject: 120199 Architecture not elsewhere classified

description: This item was presented in Auckland at the: Rethinking Sustainable Pacific Rim Territories. Proceedings of the 2020 APRU Sustainable Cities and Landscapes Hub PhD SymposiumDate: 14-18/12/20Editors: Paola Boarin, Errol Haarhoff, Manfredo Manfredini, Mohsen Mohammadzadeh, Alessandro Premier

ISBN: 978-0-473-53616-9
ABSTRACTBackground: For most people, the natural environment is recommended as an affordable health promotion method.Goal: Develop an app to collect people's health information and return people's environmental health prediction scores. The data can also be used in landscape planning and design in the future to design healing fields for people to use.Discussion: Experiment with a preliminary developed application. The research results show that the altitude of Toucheng Farm is slightly higher than that of flat land; when the temperature is low, the heartbeat in the physiological response increases, and the weather and relative humidity of the day will affect the preferences of tourists.Conclusion: Climate and environmental factors affect personal physical and mental health and social distancing strategies caused by the global epidemic this year. The next step of the research is to consider the impact of climate and social distance factors on people's health and incorporate them into the health route system.
NODES_Inndiana_Z59_Ad libitum ketogenic diet reverts western diet-pathological effects in liver, but not in skeletal muscle in mice
Creators: name: Prodam, Flavia
Publisher: name: Zenodo
Year: 2024
Subjects: Spoke 5 - Industry for Health and Silver Economy
INNDIANA Project
Eco healthcare
ECS00000036

description: oral presentation
(DarkAI) Mapping the large-scale density field of dark matter using artificial intelligence
Creators: name: Wang, Zitong
name: Shi, Feng
name: Yang, Xiaohu
name: Li, Qingyang
name: Liu, Yanming
name: Li, Xiaoping
Publisher: name: arXiv
Year: 2023
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Herein, we present a deep-learning technique for reconstructing the dark-matter density field from the redshift-space distribution of dark-matter halos. We built a UNet-architecture neural network and trained it using the COmoving Lagrangian Acceleration fast simulation, which is an approximation of the N-body simulation with $512^3$ particles in a box size of 500 Mpc $h^{-1}$. Further, we tested the resulting UNet model not only with training-like test samples but also with standard N-body simulations, such as the Jiutian simulation with $6144^3$ particles in a box size of 1000 Mpc $h^{-1}$ and the ELUCID simulation, which has a different cosmology. The real-space dark-matter density fields in the three simulations can be reconstructed reliably with only a small reduction of the cross-correlation power spectrum at 1% and 10% levels at $k=0.1$ and $0.3~h\mathrm{Mpc^{-1}}$, respectively. The reconstruction clearly helps to correct for redshift-space distortions and is unaffected by the different cosmologies between the training (Planck2018) and test samples (WMAP5). Furthermore, we tested the application of the UNet-reconstructed density field to obtain the velocity \& tidal field and found that this approach provides better results compared to the traditional approach based on the linear bias model, showing a 12.2% improvement in the correlation slope and a 21.1% reduction in the scatter between the predicted and true velocities. Thus, our method is highly efficient and has excellent extrapolation reliability beyond the training set. This provides an ideal solution for determining the three-dimensional underlying density field from the plentiful galaxy survey data.
description: 14 pages, 16 figures
Cosmological Constant and Local Gravity
Creators: name: Bernabeu, Jose
name: Espinoza, Catalina
name: Mavromatos, Nick E.
Publisher: name: arXiv
Year: 2009
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We discuss the linearization of Einstein equations in the presence of a cosmological constant, by expanding the solution for the metric around a flat Minkowski space-time. We demonstrate that one can find consistent solutions to the linearized set of equations for the metric perturbations, in the Lorentz gauge, which are not spherically symmetric, but they rather exhibit a cylindrical symmetry. We find that the components of the gravitational field satisfying the appropriate Poisson equations have the property of ensuring that a scalar potential can be constructed, in which both contributions, from ordinary matter and $Λ> 0$, are attractive. In addition, there is a novel tensor potential, induced by the pressure density, in which the effect of the cosmological constant is repulsive. We also linearize the Schwarzschild-de Sitter exact solution of Einstein's equations (due to a generalization of Birkhoff's theorem) in the domain between the two horizons. We manage to transform it first to a gauge in which the 3-space metric is conformally flat and, then, make an additional coordinate transformation leading to the Lorentz gauge conditions. We compare our non-spherically symmetric solution with the linearized Schwarzschild-de Sitter metric, when the latter is transformed to the Lorentz gauge, and we find agreement. The resulting metric, however, does not acquire a proper Newtonian form in terms of the unique scalar potential that solves the corresponding Poisson equation. Nevertheless, our solution is stable, in the sense that the physical energy density is positive.
description: 7 pages revtex, no figures; discussion on light bending added, no effect on conclusions, version to appear in Physical Review D.