cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Gradient modification of Newtonian gravity
Creators: name: Lazar, Markus
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: A second gradient generalization of Newtonian gravity is presented within the framework of gradient field theory. Weak nonlocality is introduced via first and second gradients of the gravitational field strength in the Lagrangian density. Gradient generalizations of the Poisson equation of Newtonian gravitation for the gravitational potential and of the generalized Gauss law for the gravitational field strength are presented. Such a gradient modification of Newtonian gravity provides a straightforward regularization of Newtonian gravity removing the classical Newtonian singularities. Finite gradient modifications of the gravitational potential energy and of the gravitational force law are constructed, with a possible connection to Yukawa interaction, and as suitable candidates for experimental tests of Newton's inverse-square law at short distances. In addition, nonlocal gravity of exponential type is investigated and its relation to gradient gravity theory is given.
description: 9 pages, 4 figures
Il paesaggio nei video game tra riferimenti pittorici ed estetica romantica
Creators: name: Sabbion, Paola
Publisher: name: Ri-Vista. Research for landscape architecture
Year: 2021

description: La distinzione tra una tela dipinta e uno spazio aperto progettato per essere esplorato sembrava fino ad oggi qualcosa univocamente definibile. Il video game mette in crisi questa consuetudine di pensiero e rende labili i confini tra la rappresentazione di una scena e la realizzazione di luoghi, sia pur virtuali, fruibili da un utente. Dal punto di vista artistico, nei video game più recenti si è progressivamente affermata la tendenza a perseguire un’estetica in grado di instaurare rapporti dialogici con le opere d’arte del passato. Nel testo si vogliono considerare soprattutto le implicazioni di questa tendenza rispetto al tema della rappresentazione del paesaggio, nell'ambito di alcuni titoli di recente uscita. Si tratta di paesaggi ideati, progettati e realizzati per raccontare delle storie, secondo un impianto narrativo che segue i principi dell'environmental storytelling. In particolare, si sostiene che alcuni principi e poetiche tipiche del Romanticismo costituiscano un modello utilizzato per progettare i paesaggi e gli scenari di gioco dei video game, utili anche al fine di rendere l’esperienza di gioco più significativa e coinvolgente.
description: Ri-Vista. Research for landscape architecture, Vol. 19 No. 2 (2020): Landscape Representation Skills
Is Housing Assistance Associated With Mental Health?
Creators: name: Jaramillo, Atticus
name: Rohe, William M.
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Medicine
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Cancer
subject: Mental Health

description: It is often suggested that housing assistance helps adults overcome mental health challenges, yet researchers have long struggled to unravel the complex psychological pathways that explain whether and how housing assistance affects mental health. We advance the literature by testing for a direct association between housing assistance and two mental health outcomes: depression and anxiety. We also tested for indirect associations, focusing on whether housing assistance affected mental health by affecting psychological stress, sense of control over life circumstances (i.e., mastery), and exposure to discrimination. We found that housing assistance was directly associated with reduced anxiety, but no direct association was found for depression. We also found that housing assistance was associated with variables believed to indirectly influence mental health, including mastery and psychological stress. However, neither of these variables was associated with depression or anxiety. Although our findings show some positive relationships, receipt of housing assistance alone was only modestly associated with anxiety, and there was no association for depression. Our findings therefore suggest that mental health services should be made available to program participants because housing assistance alone may not promote better mental health. Supportive housing programs provide a promising model for delivering mental health services to program participants. However, housing planners and policymakers will need to develop new areas of expertise and new strategic priorities to ensure the effective expansion, implementation, and administration of such programs.
Inhabiting complexity. Representation as an act of regeneration
Creators: name: Cabello Arribas, Juan
Publisher: name: Ri-Vista. Research for landscape architecture
Year: 2021

description: How do technicians represent the complexity we are living in? Which are the processes for an appropriate reconstruction of this always-changing portrait? What they see and how they observe landscapes? What architecture must learn from other disciplines if it wants to get into the era of communication? In a time of emergency, old examples and new ones will make visible how the traditional technicians would practice in a different and more concerned way if they want to play a more fruitful role in the regeneration of the living environment. This work wants to show the transforming attitude of observation an architect experienced in his laboratory during last fifteen years, in order to bring all the technicians together in a more complex discussion about the future of the living beings and the ecosystems they transform everyday. It wants to make visible how architecture could review its ways of representation if it wants to get into the future, the era of ecology.
description: Ri-Vista. Research for landscape architecture, Vol. 19 No. 2 (2020): Landscape Representation Skills
La performatività della carta per rappresentare mondi di vita
Creators: name: Poli, Daniela
Publisher: name: Ri-Vista. Research for landscape architecture
Year: 2021

description: The article illustrates the search for a process of ‘patrimonial representation of territories’, capable of including local population in the recognition and re-appropriation of its deep values, and pointed at containing the homologating exuberance of IT tools and returning the world a human form.
description: Ri-Vista. Research for landscape architecture, Vol. 19 No. 2 (2020): Landscape Representation Skills
Low-frequency and Moiré Floquet engineering: a review
Creators: name: Rodriguez-Vega, Martin
name: Vogl, Michael
name: Fiete, Gregory A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We review recent work on low-frequency Floquet engineering and its application to quantum materials driven by light, emphasizing van der Waals systems hosting Moiré superlattices. These non-equilibrium systems combine the twist-angle sensitivity of the band structures with the flexibility of light drives. The frequency, amplitude, and polarization of light can be easily tuned in experimental setups, leading to platforms with on-demand properties. First, we review recent theoretical developments to derive effective Floquet Hamiltonians in different frequency regimes. We apply some of these theories to study twisted graphene and twisted transition metal dichalcogenide systems irradiated by light in free space and inside a waveguide. We study the changes induced in the quasienergies and steady-states, which can lead to topological transitions. Next, we consider van der Waals magnetic materials driven by low-frequency light pulses in resonance with the phonons. We discuss the phonon dynamics induced by the light and resulting magnetic transitions from a Floquet perspective. We finish by outlining new directions for Moiré-Floquet engineering in the low-frequency regime and their relevance for technological applications.
description: 66 pages, 13 figures
Paesaggi di-segni, geo-grafie emozionali
Creators: name: Colafranceschi, Daniela
Publisher: name: Ri-Vista. Research for landscape architecture
Year: 2021

description: ITA/ENGL Sono molti i mezzi grafici, fotografici, digitali che abbiamo oggi a disposizione per comporre. Il disegno non è più lo strumento imprescindibile di un linguaggio espressivo, se non una opzione. E’ proprio questa ‘opzione’ quella che fa la differenza tra un disegnare per riprodurre e un disegnare che diviene linguaggio e strumento di narrazione. L’opzione è la scelta. E’ il mettersi alla prova, è misurarsi con l’altro da sé: che sia una persona, uno spazio, un albero o una foglia; è tradurne in segno una coscienza di distanza o prossimità, di scala e di proporzione, di relazione, di tessitura, di valore cromatico o materico. Una opzione che trasla il disegno a geografia mentale, non nella ricerca di un rigore che ne fissi codici espressivi ma nel piacere di apprendere nell’interpretare. Disegnare è riflettere e risponde al proprio modo di pensare, di spiegarsi le cose; è quello che vediamo, sono i nostri appunti. Poterli sintetizzare in un disegno è controllarne la loro complessità e comunicarla. I segni, le narrazioni contenute in questo testo, sono collage, sono sguardi, ma anche progetti: sono parchi, giardini, piazze, strade, quei paesaggi che mi piacerebbe realizzare. Una esperienza di capacità di rappresentazione del paesaggio come strumento progettuale, presentata nella forma di un racconto. There are many graphic, photographic and digital means that we have available today to compose.Drawing is no longer the essential tool of an expressive language, if not an option. It is precisely this 'option' that makes the difference between a drawing to reproduce and a drawing that becomes a language and a narrative tool. The option is the choice. It means putting oneself to the test, it is measuring oneself with the other: whether it is a person, a space, a tree or a leaf; it means translating into a sign an awareness of distance or proximity, of scale and proportion, of relationship, of texture, of chromatic or material value. An option that translates drawing to mental geography, not in the search for a rigor that fixes expressive codes but in the pleasure of learning in interpretingDrawing is reflecting and responds to one's way of thinking, of explaining things to yourself; that's what we see, it's our notes. Being able to synthesize them in a drawing means controlling their complexity and communicating it. The signs, the narratives contained in this text, are collages, they are gazes, but also projects: they are parks, gardens, squares, streets, all those landscapes that I would like to create. It’s an experience of landscape representation skill, as a design tool, presented in the form of a story.
description: Ri-Vista. Research for landscape architecture, Vol. 19 No. 2 (2020): Landscape Representation Skills
Kajkwakhrattxi Field Materials
Creators: name: Kajkwakhrattxi, Mej
name: Kajkwakhrattxi, Nokêrê
name: Kajkwakhrattxi, Orengô
name: Kajkwakhrattxi, Rowthyktxi
name: Kajkwakhrattxi, Sakà
name: Kajkwakhrattxi, Wêtàktxi
name: Suyà, Pàjnti
name: Beauchamp, Jérémie
name: Lapierre, Myriam
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2020

description: Audio recordings of lexical, phonological, grammatical elicitation, and orthography workshop, usually with accompanying scanned original or typed field notes (per session). Includes collaborative research between Beauchamp and Lapierre from a first portion of 2018, followed by individual research by Beauchamp (Lapierre left Kawêrêtxikô on July 27, 2018); Beauchamp had visited Kawêrêtxikô on two prior field trips.
VHE gamma ray absorption by galactic interstellar radiation field
Creators: name: Zhang, Jian-Li
name: Bi, Xiao-Jun
name: Hu, Hong-Bo
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Adopting a recent calculation of the Galactic interstellar radiation field, we calculate the attenuation of the very high energy gamma rays from the Galactic sources. The infra-red radiation background near the Galactic Center is very intense due to the new calculation and our result shows that a cutoff of high energy gamma ray spectrum begins at about 20 TeV and reaches about 10% for 50 TeV gamma rays.
description: 6 pages, 1 figure, figure is changed, conclusion not changed
Growing Safely or Building Risk?
Creators: name: Hino, Miyuki
name: BenDor, Todd K.
name: Branham, Jordan
name: Kaza, Nikhil
name: Sebastian, Antonia
name: Sweeney, Shane
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Medicine
subject: Biotechnology
subject: Environmental Sciences not elsewhere classified
subject: Ecology
subject: FOS: Biological sciences
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Science Policy
subject: Plant Biology

description: Limiting housing and infrastructure in flood-prone places has long been recognized as critical to managing long-term risk. However, due to the difficulty of tracking development at small spatial scales, little empirical research has been conducted to explain differences between communities’ floodplain development patterns. We analyzed new construction across 5 million parcels in the state of North Carolina to develop standardized measures of floodplain development and evaluated the relationships between flood risk management effort and development outcomes. Statewide, for every property removed through buyouts from 1996 to 2017, more than 10 new residences were built in floodplains. At the community level, indicators of flood risk management effort (participation in the Community Rating System and use of buyouts) did not consistently align with floodplain development outcomes. Based on a sample of urban and suburban counties, we found more than 75,000 acres of vacant floodplain land currently zoned for development. Although we did not capture the full range of flood risk mitigation practices, results indicate that local development policies often run counter to efforts to limit long-term risk. Land use planning and floodplain management have the potential to play a larger role in flood risk mitigation. Modifying federal programs to more strongly disincentivize floodplain development could enhance local regulation and minimize future flood exposure. Given extensive undeveloped floodplain land and projected climate change, additional effort to manage development is needed to limit increases in flood risk.
Drawings vs. photos in the representation of landscape architecture
Creators: name: Morabito, Valerio
Publisher: name: Ri-Vista. Research for landscape architecture
Year: 2021

description: At the beginning of the last century, Walter Benjamin questioned the reproducibility of works of art, focusing on photography and movie. Re-reading his famous essay, The Work of Art in the Age of Mechanical Reproduction opens questions about the authenticity of drawings (both analog or digital) and the reproducibility of digital pictures in contemporary Landscape Architecture. Therefore, this text attempts to update and relate to contemporary landscape design Benjamin's concepts of concentration and distraction in perceiving works of art. In particular, if some digital pictures can be counted within the category of reproducible works of art, perceivable through distraction, and if some drawings are still ascribable to the category of original works of art that require concentration for perception. Also, the text aims to propose a different meaning to digital images ascribed to the category of reproducibility, offering a definition closer to photography than drawing. To better speak about concentration and distraction, photography and drawing, originality and reproducibility of works of landscape representation, the second part of the text presents two different contemporary approaches: the first one is related to Gareth Doherty’s methodology in perceiving and drawing places and territories as original works of landscape representations; the second speaks about James Corner’s landscape analysis, representation and design strongly connected to the reproducibility of digital pictures. The last part of the text explains because the authenticity of drawings, which Benjamin identified in the possibility of being placed at a specific time and within a particular place, is still current and necessary to represent ideas of landscape architecture.
description: Ri-Vista. Research for landscape architecture, Vol. 19 No. 2 (2020): Landscape Representation Skills
Representation and Landscape Architecture: Towards a New Language?
Creators: name: Stefàno, Daniele
Publisher: name: Ri-Vista. Research for landscape architecture
Year: 2021

description: Landscape architecture has a significant relation with figurative arts since its beginnings. The cultural, aesthetic, stylistic, and artistic contribution to its project is essential. It also reflects social needs; they propose cultural models and transmit scientific information. Despite that, it appears we are experiencing an absolute contradiction because, on the one hand, we have excellent examples and the technologies to create new occasions that bring notable advances in our culture and in the way of conceiving transformations. It seems that design evolves in a completely new way, made up of the integration of languages, contaminations, and experimentations. On the other hand, however, we are facing an evident flattening in the majority of the works that are produced worldwide. The same digital programs, if very useful from a technical point of view and proficient in processing and representing large quantities of information, seem to produce a homologation of project representations worldwide. If representation is directly responsible for the way we approach transformations, can we talk about a new evolving language? Considering as well the relationship with the European Landscape Convention, the paper aims to reconsider the role of representation, conceived as directly responsible for the way we approach transformations as well as for shaping a way of thinking related to the sensibility toward landscape values. It therefore considers the cognitive aspect of representation as a crucial value for enhancing a more aware culture of landscape architecture.
description: Ri-Vista. Research for landscape architecture, Vol. 19 No. 2 (2020): Landscape Representation Skills
Health improvement framework for planning actionable treatment process using surrogate Bayesian model
Creators: name: Nakamura, Kazuki
name: Kojima, Ryosuke
name: Uchino, Eiichiro
name: Murashita, Koichi
name: Itoh, Ken
name: Nakaji, Shigeyuki
name: Okuno, Yasushi
Publisher: name: arXiv
Year: 2020
Subjects: subject: Machine Learning (cs.LG)
subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: Clinical decision making regarding treatments based on personal characteristics leads to effective health improvements. Machine learning (ML) has been the primary concern of diagnosis support according to comprehensive patient information. However, the remaining prominent issue is the development of objective treatment processes in clinical situations. This study proposes a novel framework to plan treatment processes in a data-driven manner. A key point of the framework is the evaluation of the "actionability" for personal health improvements by using a surrogate Bayesian model in addition to a high-performance nonlinear ML model. We first evaluated the framework from the viewpoint of its methodology using a synthetic dataset. Subsequently, the framework was applied to an actual health checkup dataset comprising data from 3,132 participants, to improve systolic blood pressure values at the individual level. We confirmed that the computed treatment processes are actionable and consistent with clinical knowledge for lowering blood pressure. These results demonstrate that our framework could contribute toward decision making in the medical field, providing clinicians with deeper insights.
Simulating quantum computation by contracting tensor networks
Creators: name: Markov, Igor L.
name: Shi, Yaoyun
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The treewidth of a graph is a useful combinatorial measure of how close the graph is to a tree. We prove that a quantum circuit with $T$ gates whose underlying graph has treewidth $d$ can be simulated deterministically in $T^{O(1)}\exp[O(d)]$ time, which, in particular, is polynomial in $T$ if $d=O(\log T)$. Among many implications, we show efficient simulations for log-depth circuits whose gates apply to nearby qubits only, a natural constraint satisfied by most physical implementations. We also show that one-way quantum computation of Raussendorf and Briegel (Physical Review Letters, 86:5188--5191, 2001), a universal quantum computation scheme with promising physical implementations, can be efficiently simulated by a randomized algorithm if its quantum resource is derived from a small-treewidth graph.
description: 7 figures
The hype of representation: some thoughts on the roles of the hyperreal and the hyperobject in contemporary landscape architecture.
Creators: name: Weller, Richard
Publisher: name: Ri-Vista. Research for landscape architecture
Year: 2021

description: This article argues that there are two models of representation in contemporary landscape architecture the hyperreal and the hyperobject. The article compares and contrasts these modes identifying their various meanings and potentials.
description: Ri-Vista. Research for landscape architecture, Vol. 19 No. 2 (2020): Landscape Representation Skills
Realistic mock observations of the sizes and stellar mass surface densities of massive galaxies in FIRE-2 zoom-in simulations
Creators: name: Parsotan, Tyler
name: Cochrane, Rachel
name: Hayward, Chris
name: Angles-Alcazar, Daniel
name: Feldmann, Robert
name: Faucher-Giguere, Claude-Andre
name: Wellons, Sarah
name: Hopkins, Phil
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The galaxy size-stellar mass and central surface density-stellar mass relationships are observational constraints on galaxy formation models. However, inferring the physical size of a galaxy from observed stellar emission is non-trivial due to various observational effects. Consequently, forward-modeling light-based sizes from simulations is desirable. In this work, we use the {\skirt} dust radiative transfer code to generate synthetic observations of massive galaxies ($M_{*}\sim10^{11}\,\rm{M_{\odot}}$ at $z=2$, hosted by haloes of mass $M_{\rm{halo}}\sim10^{12.5}\,\rm{M_{\odot}}$) from high-resolution cosmological zoom-in simulations that form part of the Feedback In Realistic Environments (FIRE) project. The simulations used in this paper include explicit stellar feedback but no active galactic nucleus (AGN) feedback. From each mock observation, we infer the effective radius ($R_e$), as well as the stellar mass surface density within this radius and within $1\,\rm{kpc}$ ($Σ_e$ and $Σ_1$, respectively). We first investigate how well the intrinsic half-mass radius and stellar mass surface density can be inferred from observables. The predicted sizes and surface densities are within a factor of two of the intrinsic values. We then compare our predictions to the observed size-mass relationship and the $Σ_1-M_\star$ and $Σ_e-M_\star$ relationships. At $z\gtrsim2$, the simulated massive galaxies are in general agreement with observational scaling relations. At $z\lesssim2$, they evolve to become too compact but still star-forming, in the stellar mass and redshift regime where many of them should be quenched. Our results suggest that some additional source of feedback, such as AGN driven outflows, is necessary in order to decrease the central densities of the simulated massive galaxies to bring them into agreement with observations at $z\lesssim2$.
description: 12 pages, 7 figures, accepted to mnras, final accepted version
Walkable Neighborhoods
Creators: name: Leyden, Kevin M.
name: Hogan, Michael J.
name: D’Arcy, Lorraine
name: Bunting, Brendan
name: Bierema, Sebastiaan
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Medicine
subject: Biotechnology
subject: Environmental Sciences not elsewhere classified
subject: Sociology
subject: FOS: Sociology
subject: Developmental Biology
subject: Science Policy
subject: Mental Health

description: We examined whether living in a walkable neighborhood influenced the happiness of younger and older city residents. The data for this study came from a comprehensive household population survey of 1,064 adults living in 16 neighborhoods in Dublin City (Ireland) and its suburbs. We used multigroup structural equation modeling to analyze the direct and indirect effects of walkability on happiness, mediated by health, trust, and satisfaction with neighborhood appearance. We found living in a walkable neighborhood was directly linked to the happiness of people aged 36 to 45 (p = .001) and, to a lesser extent, those aged 18 to 35 (p = .07). For older adults, we found that walkable places mattered for happiness indirectly. Such built environments enhanced the likelihood that residents felt more healthy and more trusting of others, and this in turn affected the happiness of older people living in walkable neighborhoods. We found that the way neighborhoods are planned and maintained mattered for happiness, health, and trust. Our findings suggest that mixed-use neighborhood designs that enable residents to shop and socialize within walking distance to their homes have direct and indirect effects on happiness. We call for an ongoing dialogue and evaluation of the way our urban and suburban neighborhoods are planned, designed, and developed, so that people can live in walkable places that better enable health and wellbeing.
A Global Approach to the Theory of Connections in Finsler Geometry
Creators: name: Youssef, Nabil L.
name: Abed, S. H.
name: Soleiman, A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Differential Geometry (math.DG)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 53C60, 53B40

description: Adopting the pullback approach to global Finsler geometry, the aim of the present paper is to provide intrinsic (coordinate-free) proofs of the existence and uniqueness theorems for the Chern (Rund) and Hashiguchi connections on a Finsler manifold. To accomplish this, we introduce and investigate the notions of semispray and nonlinear connection associated with a given regular connection, in the pullback bundle. Moreover, it is shown that for the the Chern (Rund) and Hashiguchi connections, the associated semispray coincides with the canonical spray and the associated nonlinear connection coincides with the Barthel connection. Explicit intrinsic expressions relating these connections and the Cartan connection are deduced. Although our investigation is entirely global, the local expressions of the obtained results, when calculated, coincide with the existing classical local results. We provide, for the sake of completeness and for comparison reasons, two appendices, one of them presenting a global survey of canonical linear connections in Finsler geometry and the other presenting a local survey of our global approach.
description: Tex file, 21 pages
La rappresentazione come necessità
Creators: name: Cillis, Marco
name: Valentini, Antonella
Publisher: name: Ri-Vista. Research for landscape architecture
Year: 2021

description: EDITORIALE DEL NUMERO 2/2020. Riflette sul significato della rappresentazione come strumento di visione del mondo. Mappare le invisibilità e la complessità, trascrivere le emozioni, esplorare nuovi linguaggi.
description: Ri-Vista. Research for landscape architecture, Vol. 19 No. 2 (2020): Landscape Representation Skills
Anschütz, Helga, Harb, Paul: Christen im vorderen Orient - Kirchen, Ursprünge, Verbreitung
Creators: name: Heyer, Friedrich
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 35 Nr. 3 (1986): Ökumenische Rundschau, Band 35, Heft 3
Dual Vector Multiplet Coupled to Dual N=1 Supergravity in 10D
Creators: name: Nishino, Hitoshi
name: Rajpoot, Subhash
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We couple in superspace a `dual' vector multiplet (C_{m_1... m_7}, ł^α) to the dual version of N=1 supergravity (e_m{}^a, ψ_m{}^α, M_{m_1... m_6}, χ_\a,Φ) in ten-dimensions. Our new 7-form field C has its 8-form field strength H dual to the 2-form field strength F of the conventional vector multiplet. We have found that the H-Bianchi identity must have the form N\wedge F, where N is the 7-form field strength in dual supergravity. We also see why only the dual version of supergravity couples to the dual vector multiplet consistently. The potential anomaly for the dual vector multiplet can be cancelled for the particular gauge group U(1)^{496} by the Green-Schwarz mechanism. As a by-product, we also give the globally supersymmetric Abelian Dirac-Born-Infeld interactions for the dual vector multiplet for the first time.
description: 20 pages, no figures
Theoretical Investigation of Totally Asymmetric Exclusion Processes on Lattices with Junctions
Creators: name: Pronina, Ekaterina
name: Kolomeisky, Anatoly B.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Totally asymmetric simple exclusion processes on lattices with junctions, where particles interact with hard-core exclusion and move on parallel lattice branches that at the junction combine into a single lattice segment, are investigated. A simple approximate theory, that treats the correlations around the junction position in a mean-field fashion, is developed in order to calculate stationary particle currents, density profiles and a phase diagram. It is shown that there are three possible stationary phases depending on the state of each of the lattice branch. At first-order phase boundaries, where the density correlations are important, a modified phenomenological domain-wall theory, that accounts for correlations, is introduced. Extensive Monte Carlo computer simulations are performed to investigate the system, and it is found that they are in excellent agreement with theoretical predictions.
description: 16 pages, 7 figures
2020 IFLA Sir Geoffrey Jellicoe Award. Kongjian Yu e le scarpe della contadina: ritratto dell’umiltà di un paesaggista.
Creators: name: Dallatorre, Giacomo
Publisher: name: Ri-Vista. Research for landscape architecture
Year: 2021

description: Ri-Vista. Research for landscape architecture, Vol. 19 No. 2 (2020): Landscape Representation Skills
Collective oscillations of a quasi one dimensional Bose condensate under damping
Creators: name: Abdullaev, Fatkhulla Kh
name: Galimzyanov, Ravil M.
name: Ismatullaev, Khayotullo
Publisher: name: arXiv
Year: 2005
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: Influence of the damping on collective oscillations of a one-dimensional trapped Bose gas in the mean field regime has been studied. Using the phenomenological damping approach developed by L.P. Pitaevskii, modified variational equations for the parameters of the condensate wave function is derived. Analytical expressions for the condensate parameters in equilibrium state have been obtained. Bistability in nonlinear oscillations of the condensate under periodic variations of the trap potential is predicted. The predictions of the modified variational approach are confirmed by full numerical simulations of the 1D GP equation with the damping.
description: It contains a manuscript - damp1DBC.tex and figures (fig1a - fig1a.eps, fig1b - fig1b.eps, fig2 - fig2.eps, fig3 - fig3.eps and fig4 - fig4.eps)
Cultivating the Continuity of European Landscapes
Creators: name: Giannini, Eleonora
Publisher: name: Ri-Vista. Research for landscape architecture
Year: 2021

description: 20th October 2020 marked the 20th anniversary of the opening of European Landscape Convention (ELC). Academic network UNISCAPE, in synergy with the Tuscany Landscape Observatory, The Italian Agency for Development Cooperation and with the support of Tuscany Region and the Municipality of Florence, promoted a two-day event to celebrate the Convenion and to set new research and project horizons for the European landscapes. Cultivating Continuity of the European Landscape. New Challenges, Innovative Perspectives saw the participation of academics, landscape architects and planners, policy makers, innovators, researchers, scientists and students, connected online from different parts of the world to Palazzo Vecchio in Florence to discuss the past twenty years of practice of the landscape values expressed in the ELC and the implementation of its principles. The conference was the beginning of a promising and active transdisciplinary debate on the increasingly complex themes which revolve around landscape, to be cultivated in the near future in dynamic continuity with the ELC, so that it can continue to be not only a normative, but most importantly a cultural reference in evolution together with the transformations of landscapes.
description: Ri-Vista. Research for landscape architecture, Vol. 19 No. 2 (2020): Landscape Representation Skills
Finding community structure in networks using the eigenvectors of matrices
Creators: name: Newman, M. E. J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: We consider the problem of detecting communities or modules in networks, groups of vertices with a higher-than-average density of edges connecting them. Previous work indicates that a robust approach to this problem is the maximization of the benefit function known as "modularity" over possible divisions of a network. Here we show that this maximization process can be written in terms of the eigenspectrum of a matrix we call the modularity matrix, which plays a role in community detection similar to that played by the graph Laplacian in graph partitioning calculations. This result leads us to a number of possible algorithms for detecting community structure, as well as several other results, including a spectral measure of bipartite structure in networks and a new centrality measure that identifies those vertices that occupy central positions within the communities to which they belong. The algorithms and measures proposed are illustrated with applications to a variety of real-world complex networks.
description: 22 pages, 8 figures, minor corrections in this version
Who Is Planning for Environmental Justice—and How?
Creators: name: Brinkley, Catherine
name: Wagner, Jenny
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Molecular Biology
subject: Ecology
subject: FOS: Biological sciences
subject: Science Policy

description: Environmental justice (EJ) seeks to correct legacies of disproportionately burdening low-income and Black, Indigenous, and people of color (BIPOC) communities with environmental hazards that contribute to health inequalities. Federal and state policies increasingly require plans to assess and incorporate EJ principles. The current lack of accessible data and plan evaluation on EJ has been a barrier to policy setting and benchmarking. We created a framework for analyzing content across a large corpus of plans by using quantitative text analysis on 461 California city general plans, also known as comprehensive plans. To verify results and identify specific policies, we conducted content analysis on a subset of seven plans. Demonstrating the broad applicability of EJ principles in planning, policies spanned all required elements of general plans: housing, circulation, land use, health, safety, open space, air quality, and noise. We found that the most headway in EJ planning has been made in cities with a majority population of color and well before the 2018 California state mandate to address EJ. Policies were primarily focused on preventing adverse exposures as opposed to correcting for legacies of inequality. Further, although all policies address vulnerable populations and places, very few specifically address race or racism. Thus, EJ has been largely operationalized as health equity. We identified 628 EJ policies focused on vulnerable populations across the seven city plans included in content analysis. The smorgasbord of policy approaches provides fodder for cities across the United States to incorporate an EJ approach to planning. Gaps in focus areas reveal room for policy innovation (e.g., emphasis on language justice, formerly incarcerated individuals, and noise ordinance policing). We invite planners and community advocates to search across California’s plans for EJ policy inspiration and to use the appendix of EJ policies cataloged in this research as a benchmark of city-level innovation.
Classical simulation of quantum many-body systems with a tree tensor network
Creators: name: Shi, Yaoyun
name: Duan, Luming
name: Vidal, Guifre
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We show how to efficiently simulate a quantum many-body system with tree structure when its entanglement is bounded for any bipartite split along an edge of the tree. This is achieved by expanding the {\em time-evolving block decimation} simulation algorithm for time evolution from a one dimensional lattice to a tree graph, while replacing a {\em matrix product state} with a {\em tree tensor network}. As an application, we show that any one-way quantum computation on a tree graph can be efficiently simulated with a classical computer.
description: 4 pages,7 figures
Fisheries impacts on marine ecosystems and biological diversity : the role for marine protected areas in British Columbia
Creators: name: Wallace, S. Scott
Publisher: name: University of British Columbia
Year: 2009

description: This research examines the impacts of fishing on marine ecosystems and marine biodiversity in British Columbia, Canada and examines the role of marine protected areas (MPAs) in mitigating these impacts. A variety of ecological approaches are taken to understand fisheries impacts. First, a catch database of historical landings in British Columbia was assembled covering the years between 1875 and 1996 for all species in all fisheries. It was shown that combined landings of all species have been very high for nearly 80 years, but the composition has changed dramatically primarily due to overfishing. Using the catch database, an assessment of large-scale ecosystem changes from overfishing was determined by a mean trophic level analysis and an estimation of marine primary productivity requirements to sustain the fishery. The mean trophic level of the catches in British Columbia's fisheries has steadily declined since the 1950's indicating an erosion of ecosystem structure from the systematic removal of long-lived, non-migratory, high trophic level species. Primary productivity requirements of the fishery as a whole has remained very high, although the relative contributions of each species group has changed significantly demonstrating fishing impacts on biodiversity and ecosystem structure. Two ecosystem models of the Strait of Georgia, one of present day and the other of 100 years ago, were developed using Ecopath software to demonstrate fishing induced changes at an ecosystem level. Results show that many species have been depleted to a point where they no longer have a functional ecosystem role in the Strait. Overall, the ecosystem is considered to be quite mature due to a substitution of higher valued commercial fish, to low value under-exploited fish occupying the same trophic niche. This was demonstrated by a trophic level analysis which indicated that virtually no high trophic level, resident species are found in present day fisheries landings. Marine protected areas were examined as tools to rebuild ecosystem structure by performing field-based studies on two severely depleted species found in the Strait, northern abalone (Haliotis kamtschatkana) and lingcod (Ophiodon elongatus). It was shown that populations of both species respond positively to the absence of human harvest in a defined area. These findings suggest that other species, and entire ecosystems may benefit from the creation of MP As. It was concluded that fisheries have had enormous impacts on marine ecosystem structure in British Columbia waters and that MP As offer one tool to restore, protect, and conserve marine resources.
Criteria for Designing Cultural Itineraries as a Strategy for Restoring the Dynamics of Cultural Landscape Formation. Some Research Notes about the Case Study of Itálica.
Creators: name: Merino Del Río, Rebeca
Publisher: name: Ri-Vista. Research for landscape architecture
Year: 2020

description: The historical concept of heritage, which mostly comprised a limited selection of structures and areas that were considered of cultural or natural interest, has been extended to the surrounding landscape in the last decades. This tendency has been corroborated by a series of International Charters and the European Landscape Convention. Despite protection, management and planning proposed by ELC some structural aspects of the territory have been disregarded because of the frantic enlargement of cities throughout the Twentieth Century. In many cases, urban investments and planning associated to the expansion of the metropolitan areas have overlooked a territorial heritage that is necessary to ensure the cultural landscape regeneration. This is the case of cultural landscapes in the buffer zones of the archaeological sites, which are now part of a diffuse territorial heritage that requires to be valorised through some innovative approaches. Particularly, the archaeological site of Italica (Santiponce) a Roman settlement located near the city of Sevilla in Andalucia (Spain) has been considered as a case study for the development of the iconographic repertory presented within the paper. The article aims to lay down the criteria for designing cultural itineraries able to restore the dynamics of cultural landscape formation. This implies the design of a bottom-up methodology to be applied in those cases where there is neither a regulatory framework nor a territorial planning able to guarantee that the actions on landscape have a real impact on social welfare and local development. The conceptualisation and hypotheses formulated by some authors of the Territorialist Society are used as references to establish a conceptual framework and a two-stage methodological approach. The conceptual framework is based on three pillars: the translation of heritage and identity values from cultural landscape to territorial heritage, the definition of a time-based territorial paradigm and the analytical method towards an integrated plan for territory. A GIS-assisted analytical method to design cultural itineraries is then suggested, framed within a landscape project aimed to promote the enlargement of the territorial heritage as a prerequisite to guarantee the restitution of the dynamics of cultural landscape formation.
description: Ri-Vista. Research for landscape architecture, Vol. 18 No. 1 (2020): Exploring Landscapes of Research
Efficient-CapsNet: Capsule Network with Self-Attention Routing
Creators: name: Mazzia, Vittorio
name: Salvetti, Francesco
name: Chiaberge, Marcello
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Deep convolutional neural networks, assisted by architectural design strategies, make extensive use of data augmentation techniques and layers with a high number of feature maps to embed object transformations. That is highly inefficient and for large datasets implies a massive redundancy of features detectors. Even though capsules networks are still in their infancy, they constitute a promising solution to extend current convolutional networks and endow artificial visual perception with a process to encode more efficiently all feature affine transformations. Indeed, a properly working capsule network should theoretically achieve higher results with a considerably lower number of parameters count due to intrinsic capability to generalize to novel viewpoints. Nevertheless, little attention has been given to this relevant aspect. In this paper, we investigate the efficiency of capsule networks and, pushing their capacity to the limits with an extreme architecture with barely 160K parameters, we prove that the proposed architecture is still able to achieve state-of-the-art results on three different datasets with only 2% of the original CapsNet parameters. Moreover, we replace dynamic routing with a novel non-iterative, highly parallelizable routing algorithm that can easily cope with a reduced number of capsules. Extensive experimentation with other capsule implementations has proved the effectiveness of our methodology and the capability of capsule networks to efficiently embed visual representations more prone to generalization.
description: Accepted by Scientific Reports
Networks of strong ties
Creators: name: Shi, Xiaolin
name: Adamic, Lada A.
name: Strauss, Martin J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: Social networks transmitting covert or sensitive information cannot use all ties for this purpose. Rather, they can only use a subset of ties that are strong enough to be ``trusted''. In this paper we consider transitivity as evidence of strong ties, requiring that each tie can only be used if the individuals on either end also share at least one other contact in common. We examine the effect of removing all non-transitive ties in two real social network data sets. We observe that although some individuals become disconnected, a giant connected component remains, with an average shortest path only slightly longer than that of the original network. We also evaluate the cost of forming transitive ties by deriving the conditions for the emergence and the size of the giant component in a random graph composed entirely of closed triads and the equivalent Erdos-Renyi random graph.
description: 10 pages, 7 figures