cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Biodiversity as a Means of Poverty Alleviation in Sub-­Saharan Africa
Creators: name: Riehl, Brianne
Publisher: name: The University of British Columbia
Year: 2012

description: This paper investigates the relationship between high levels of poverty and biodiversity in sub-Saharan Africa (SSA). Using a collection of secondary research, it was found that the link between these two variables is more than geographic, and that biodiversity conservation is a crucial factor in the alleviation of poverty in SSA. A variety of poverty reducing strategies that incorporate biodiversity conservation have been implemented and succeeded elsewhere, implying that the same is possible for this region. Overall, the paper suggests that the biodiversity of SSA will be particularly important for the economic wellbeing of the poor in a future of climate change.
Review of water scarcity in Northern China : why is the water scarce, and what can be done about it?
Creators: name: Lam, Victoria
Publisher: name: The University of British Columbia
Year: 2012

description: China has an uneven geographical distribution of water; while water resources in the central and southern regions tends to be ample, the water scarcity in the North is alarming—many Northern provinces have less than 500m³ of water per capita and are classified as water-scarce. Water is scarce in the north due to its naturally arid climate (which is exacerbated by climate change), increased water pollution, overexploitation of water resources and water wastage. To mitigate the water crisis, the Chinese government has implemented the South-North Water Diversion Project (SNDP) which physically transfers water from the central Yangtze Drainage Basin to the three drainage basins in the north (Hai, Huai and Yellow); there are many issues posed by the SNDP, namely water pollution and reduction in the Yangtze River Delta, but the project is already under construction and it is well-agreed that the SNDP will indeed alleviate the water crisis in the North. Other mitigation strategies proposed by researchers include desalination of water, water pricing and international food trade, but more studies will need to be conducted in these areas to investigate their socioeconomic and technical feasibilities.
A quantum computing approach to fixed-node Monte Carlo using classical shadows
Creators: name: Blunt, Nick S.
name: Caune, Laura
name: Quiroz-Fernandez, Javiera
Publisher: name: arXiv
Year: 2024
Subjects: subject: Quantum Physics (quant-ph)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Quantum Monte Carlo (QMC) methods are powerful approaches for solving electronic structure problems. Although they often provide high-accuracy solutions, the precision of most QMC methods is ultimately limited by a trial wave function that must be used. Recently, an approach has been demonstrated to allow the use of trial wave functions prepared on a quantum computer [Nature 603, 416 (2022)] in the auxiliary-field QMC (AFQMC) method, using classical shadows to estimate the required overlaps. However, this approach has an exponential post-processing step to construct these overlaps, when performing classical shadows obtained using random Clifford circuits. Here, we study an approach to avoid this exponentially scaling step by using a fixed-node Monte Carlo method, based on full configuration interaction quantum Monte Carlo (FCIQMC). This method is applied to the local unitary cluster Jastrow (LUCJ) ansatz. We consider H$_4$, ferrocene and benzene molecules using up to 12 qubits as examples. Circuits are compiled to native gates for typical near-term architectures, and we assess the impact of circuit-level depolarizing noise on the method. We also provide a comparison of AFQMC and fixed-node approaches, demonstrating that AFQMC is more robust to errors, although extrapolations of the fixed-node energy reduce this discrepancy. Although the method can be used to reach chemical accuracy, the sampling cost to achieve this is high even for small active spaces, suggesting caution for the prospect of outperforming conventional QMC approaches.
description: 16 pages, 8 figures
Verfahren zur Herstellung einer Deckelbaugruppe mit aufgebautem Isolator für eine Batteriezelle sowie Deckelbaugruppe
Creators: name: Bareth, Thomas
name: Horn, Max
name: :Unav
Publisher: name: Fraunhofer-Gesellschaft
Year: 2023
Subjects: Batterie
Zelle
Deckelbaugruppe
Multimaterialverarbeitung
Additive Fertigung
battery
cell
cap
multi-material
additive manufacturing

description: Die Erfindung betrifft ein additives Multimaterial-Herstellungsverfahren zum Herstel-len einer Deckelbaugruppe für eine Batteriezelle, wobei das Herstellungsverfahren ein additives Herstellen zumindest der folgenden Elemente der Deckelbaugruppe aufweist: a) Herstellen wenigstens eines ersten Terminals umfassend ein elektrisch leitfähiges erstes Material, b) Herstellen eines Deckelteils umfassend das erste oder ein anderes Material, c) Herstellen wenigstens eines ersten Isolatorbereichs umfas-send ein elektrisch isolierendes Material, wobei der erste Isolatorbereich das erste Terminal gegenüber dem Deckelteil elektrisch isoliert. Die Erfindung betrifft auch eine Deckelbaugruppe für eine Batteriezelle.
description: The invention relates to an additive multi-material manufacturing process for manu-facturing a cap assembly for a battery cell, the manufacturing process including additive manufacturing of at least the following elements of the cap assembly: a) manufacturing at least a first terminal including an electrically conductive first ma-terial, b) manufacturing a cap component including the first or another material, c) manufacturing at least a first insulator region including an electrically insulating material, the first insulator region electrically insulating the first terminal from the cap component. The invention also relates to a cap assembly for a battery cell.
title: Rezension zu Nikolas van Essenberg: Romantik im Spannungsfeld von Konfessionalisierung und Nationalisierung. Das Spätwerk Joseph von Eichendorffs 1837–1857
Creators: name: Regener, Ursula
Publisher: name: Friedrich-Schiller-Universität
Year: 2023
Subjects: subject: Romantik
subject: Joseph von Eichendorff
subject: Nation
subject: Politik
subject: Konfession
subject: 800
subject: 830

description: Ursula Regener rezensiert Nikolas van Essenbergs „Romantik im Spannungsfeld von Konfessionalisierung und Nationalisierung. Das Spätwerk Joseph von Eichendorffs 1837–1857“ (Wallstein 2023).
description: Modell Romantik: Variation - Reichweite - Aktualität
title: Rezension zu Kate Reiserer: Vier Übersetzerinnen und ihre neun Ehemänner. Ehe und Übersetzung in der Romantik
Creators: name: Weis, Catherine
Publisher: name: Friedrich-Schiller-Universität
Year: 2023
Subjects: subject: Romantik
subject: Übersetzungspraxis
subject: Translationswissenschaft
subject: Autorinnenschaft
subject: 800
subject: 830

description: Catherine Weis rezensiert Kate Reiserers „Vier Übersetzerinnen und ihre neun Ehemänner. Ehe und Übersetzung in der Romantik“ (Frank & Timme 2021).
description: Modell Romantik: Variation - Reichweite - Aktualität
Non-linear Compton scattering of ultrahigh-intensity laser pulses
Creators: name: Seipt, D.
name: Kampfer, B.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present results for the photon spectrum emitted in non-linear Compton scattering of pulsed ultra-strong laser fields off relativistic electrons for intensities up to $a_0\gtrsim 100$ and pulse lengths of a few laser cycles. At ultrahigh laser intensity, it is appropriate to average over the sub- structures of the differential photon spectrum. Supplementing this procedure with a stationary phase approximation one can evaluate the total emission probability. We find the photon yield in pulsed fields to be up to a factor of ten larger than results obtained from a monochromatic wave calculation.
description: 20 pages, 5 figures
'Why wasn't I told this service existed?' Digital Research Services Review at University of Edinburgh
Creators: name: Rice, Robin
Publisher: name: Zenodo
Year: 2024
Subjects: research data support

description: As part of the development of its Digital Strategy in 2022-23, the University of Edinburgh reviewed its approach to digital research, building on a desire to enhance services and support provided to the academic community, focusing particularly on areas of support, digital tools and infrastructure, and how these are perceived by users and non-users. The core of the services examined were the research data service and research computing service provided by the University’s Information Service.

As a starting point, a qualitative study was commissioned to examine:

how digital research services are perceived by the academic community; 

what additional support may be beneficial in relation to digital research; and

         what areas the University should focus on (invest in) in the future to enhance support for digital research.

The external research team interviewed a total of 20 stakeholders and engaged an additional 17 via three focus groups (a total of 163 participants were approached, with an overall response rate of 23%). All three Colleges of the University contributed to the study, as well as individuals at different levels of seniority. About twenty senior stakeholders informed the study and workshopped the results to feed into the digital strategy.

This work was followed by a quantitative survey, led by the CAMARADES research group at the University who had also delivered a Research Culture Survey, prior to this. The survey focused on Digital Research Services and open research practices at the University of Edinburgh. The survey was distributed via University mailing lists and web sites with the intention to reach research professional staff, academic research staff and research students. 171 individuals provided consent to participate and answered at least question 1 of the survey. This represents a small proportion of the estimated 10,000 research active staff and students at the university, however results were aligned with the qualitative results, while offering more granular insights about usefulness of particular services. Some questions from similar surveys at peer institutions were used to allow comparison of results.

The presentation will cover highlights of the findings of both components of the Digital Research Services Review, exposing successes and shortfalls of the research data service in particular, with lessons applicable to other institutions serving users across the disciplinary spectrum, with a set of services that map onto the research lifecycle. It will also cover the immediate and planned next steps in terms of investment and development as a direct result of the findings.
Global Poles of the Two-Loop Six-Point N=4 SYM integrand
Creators: name: Larsen, Kasper J.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Recently, a recursion relation has been developed, generating the four-dimensional integrand of the amplitudes of N=4 supersymmetric Yang-Mills theory for any number of loops and legs. In this paper, I provide a comparison of the prediction for the two-loop six-point maximally helicity-violating (MHV) integrand against the result obtained by use of the leading singularity method. The comparison is performed numerically for a large number of randomly selected momenta and in all cases finds agreement between the two results to high numerical accuracy.
description: 32+34 pages, 16 figures, 1 notebook; minor typos corrected, ref. added; version accepted by Phys. Rev. D
Verfahren zur Herstellung eines metallischen Gehäuses
Creators: name: Bareth, Thomas
name: Berger, Christoph
name: Stumper, Benedikt
name: :Unav
Publisher: name: Fraunhofer-Gesellschaft
Year: 2023
Subjects: Additive Fertigung
Gehäuse
metallisch
Energiespeicher
Batterie
additive manufacturing
housing
metallic
energy storage
battery

description: Diese Offenbarung beschreibt ein Verfahren zur Herstellung eines metallischen Ge-häuses für einen elektrischen Energiespeicher mittels eines additiven Fertigungsver-fahrens. Das Verfahren umfassend dabei die folgenden Schritte. In einem Verfah-rensschritt wird ein rechnerisches Abbild einer geometrischen Form des Gehäuses erstellt. In einem weiteren Verfahrensschritt wird das Gehäuse mittels des additiven Fertigungsverfahrens gefertigt, wobei beim Fertigen des Gehäuses ein in Schichten auf einer Bauplatte aufgetragenes metallisches Ausgangsmaterial mittels eines Schmelzwerkzeugs selektiv geschmolzen wird. Ferner wird vor dem Fertigen des Gehäuses das rechnerische Abbild durch mindestens eine an das Gehäuse angren-zende Wärmeableitstruktur ergänzt und/oder das rechnerische Abbild der geometri-schen Form des Gehäuses entsprechend einer beim Fertigen zu erwartenden, und im Vorhinein bestimmten Verzugskraft in entgegenwirkender Weise deformiert. Zudem erfolgt das selektive Schmelzen während des Fertigens des Gehäuses entsprechend des geänderten rechnerischen Abbildes.
description: The present disclosure describes a method for manufacturing a metallic housing for an electrical energy storage device by means of an additive manufacturing process. The method comprises the following steps. In a process step, a computational image of a geometric shape of the housing is created. In a further process step, the hous-ing is manufactured by means of the additive manufacturing process, wherein a metallic starting material applied in layers to a building plate is selectively melted by means of a melting tool when the housing is manufactured. Furthermore, prior to fabrication of the housing, the computational image is supplemented by at least one heat dissipation structure adjacent to the housing and/or the computational image of the geometric shape of the housing is deformed in a counteracting manner in accordance with a distortion force to be expected during fabrication and determined in advance. In addition, the selective melting takes place during the manufacturing of the housing according to the modified computational image.
Uniqueness of two-loop master contours
Creators: name: Caron-Huot, Simon
name: Larsen, Kasper J.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Generalized-unitarity calculations of two-loop amplitudes are performed by expanding the amplitude in a basis of master integrals and then determining the coefficients by taking a number of generalized cuts. In this paper, we present a complete classification of the solutions to the maximal cut of integrals with the double-box topology. The ideas presented here are expected to be relevant for all two-loop topologies as well. We find that these maximal-cut solutions are naturally associated with Riemann surfaces whose topology is determined by the number of states at the vertices of the double-box graph. In the case of four massless external momenta we find that, once the geometry of these Riemann surfaces is properly understood, there are uniquely defined master contours producing the coefficients of the double-box integrals in the basis decomposition of the two-loop amplitude. This is in perfect analogy with the situation in one-loop generalized unitarity.
 In addition, we point out that the chiral integrals recently introduced by Arkani-Hamed et al. can be used as master integrals for the double-box contributions to the two-loop amplitudes in any gauge theory. The infrared finiteness of these integrals allow for their coefficients as well as their integrated expressions to be evaluated in strictly four dimensions, providing significant technical simplification. We evaluate these integrals at four points and obtain remarkably compact results.
description: 35+5 pages, 10 figures; minor changes; version published in JHEP
Verfahren zum Herstellen wenigstens einer ersten Komponente einer Batteriezelleinhausung und Batteriezelleinhausung
Creators: name: Bareth, Thomas
name: Berger, Christoph
name: Stumper, Benedikt
name: :Unav
Publisher: name: Fraunhofer-Gesellschaft
Year: 2023
Subjects: Additive Fertigung
Batterie
Zelle
Gehäuse
Zellinformationseinrichtung
additive manufacturing
battery
cell
housing
cell information device

description: Die Erfindung betrifft ein Verfahren zum Herstellen wenigstens einer ersten Kompo-nente einer Batteriezelleinhausung für eine Batteriezelle, wobei das Verfahren auf-weist: a) additives Herstellen zumindest eines ersten Anteils der ersten Komponente der Batteriezelleinhausung unter zumindest teilweiser Herstellung wenigstens einer Ausnehmung in der ersten Komponente, wobei die Ausnehmung zur Aufnahme einer Zellinformationseinrichtung eingerichtet ist und die Zellinformationseinrichtung dazu eingerichtet ist, Informationen über die Batteriezelle bereitzuhalten und/oder zu ermitteln; b) Anordnen der Zellinformationseinrichtung in der zumindest teilweise hergestellten Ausnehmung oder zumindest teilweise additives Herstellen der Zellin-formationseinrichtung, sodass diese innerhalb der zumindest teilweise hergestellten Ausnehmung liegt; c) Fortsetzten des additiven Herstellens der ersten Komponente der Batteriezelleinhausung. Ferner betrifft die Erfindung eine Batteriezelleinhausung.
description: The invention relates to a method of fabricating at least a first component of a bat-tery cell enclosure for a battery cell, the method comprising: a) additive manufac-turing of at least a first portion of the first component of the battery cell housing with at least partial manufacturing of at least one cavity in the first component, wherein the cavity is set up to receive a cell information device and the cell infor-mation device is set up to hold and/or determine information about the battery cell; b) placing the cell information device in the at least partially formed cavity or at least partially additive manufacturing the cell information device so that the cell information device is located within the at least partially formed cavity; or (c) con-tinuing the additive manufacturing of the first component of the battery cell hous-ing. Furthermore, the invention relates to a battery cell housing.
Two-Loop Maximal Unitarity with External Masses
Creators: name: Johansson, Henrik
name: Kosower, David A.
name: Larsen, Kasper J.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We extend the maximal unitarity method at two loops to double-box basis integrals with up to three external massive legs. We use consistency equations based on the requirement that integrals of total derivatives vanish. We obtain unique formulae for the coefficients of the master double-box integrals. These formulae can be used either analytically or numerically.
description: 41 pages, 7 figures; small corrections, final journal version
An assessment of trace metals in the soil, vegetation and atmospheric deposition of urban areas in Vancouver.
Creators: name: Oka, Gladys Azaria
Publisher: name: The University of British Columbia
Year: 2012

description: Urbanization of recent decades has motivated the expansion of urban agriculture as a means to address growing concerns of food security, climate change mitigation and community building, especially in areas facing socio-economic challenges. Community gardens are often relegated to brownfield sites which may have contained some degree of soil contamination prior to remediation. The intrinsic placement of gardens in areas of high industrial exposure poses a concern for atmospheric deposition as another source of contaminants. Metals are of particular interest because they have large anthropogenic contributions and persist in soils for very long periods of time. This study investigates metal concentrations in the native soil and atmospheric deposition of three sites, which represent a range in crop production, site history and industrial exposure. Metal accumulation in the rhizosphere soil, root and shoot of Kentucky bluegrass was assessed. Study sites include the UBC Farm, the 16 Oaks community garden and a brownfield in the Strathcona neighbourhood. Field sampling of topsoil and vegetation took place in the fall. In addition, wet and dry deposition were collected over a period of five months. HCl and aqua regia extraction were performed to determine the labile and total fractions of metals in the soil, vegetation and deposition. During this time Zn, Pb, Ni, Mn and Cu were found at detectable concentrations at all sites. Total metal concentrations were highest at 16 Oaks and lowest at the Farm. Dry deposition was the main mechanism for atmospheric metal contributions and was largest at the Brownfield and lowest at the Farm. Ni and Mn seem to largely originate from parent material while Zn, Pb and Cu may be considerably influenced by atmospheric deposition. High mobility into root and shoot were observed for all metals with large variability at 16 Oaks and the Brownfield. This may be attributed to site heterogeneity, lack of plant preference for accumulation into vegetative parts and large variability in foliar uptake. Future siting of community gardens needs to address the potential additive effects of native soil contamination and atmospheric deposition, as parent material, site history and current deposition trends seem to be complementary to overall soil and vegetative health.
Maximal Unitarity for the Four-Mass Double Box
Creators: name: Johansson, Henrik
name: Kosower, David A.
name: Larsen, Kasper J.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We extend the maximal-unitarity formalism at two loops to double-box integrals with four massive external legs. These are relevant for higher-point processes, as well as for heavy vector rescattering, VV -> VV. In this formalism, the two-loop amplitude is expanded over a basis of integrals. We obtain formulas for the coefficients of the double-box integrals, expressing them as products of tree-level amplitudes integrated over specific complex multidimensional contours. The contours are subject to the consistency condition that integrals over them annihilate any integrand whose integral over real Minkowski space vanishes. These include integrals over parity-odd integrands and total derivatives arising from integration-by-parts (IBP) identities. We find that, unlike the zero- through three-mass cases, the IBP identities impose no constraints on the contours in the four-mass case. We also discuss the algebraic varieties connected with various double-box integrals, and show how discrete symmetries of these varieties largely determine the constraints.
description: 25 pages, 3 figures; final journal version
Imaginary parts and discontinuities of Wilson line correlators
Creators: name: Laenen, Eric
name: Larsen, Kasper J.
name: Rietkerk, Robbert
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We introduce a notion of position-space cuts of eikonal diagrams, the set of diagrams appearing in the perturbative expansion of the correlator of a set of straight semi-infinite Wilson lines. The cuts are applied directly to the position-space representation of any such diagram and compute its imaginary part to the leading order in the dimensional regulator. Our cutting prescription thus defines a position-space analog of the standard momentum-space Cutkosky rules. Unlike momentum-space cuts which put internal lines on shell, position-space cuts constrain a number of the gauge bosons exchanged between the energetic partons to be lightlike, leading to a vanishing and a non-vanishing imaginary part for space- and timelike kinematics, respectively.
description: 5 pages, 2 figures; minor changes; version published in PRL
Persistence of translational symmetry in the BCS model with radial pair interaction
Creators: name: Deuchert, Andreas
name: Geisinger, Alissa
name: Hainzl, Christian
name: Loss, Michael
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mathematical Physics (math-ph)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We consider the two-dimensional BCS functional with a radial pair interaction. We show that the translational symmetry is not broken in a certain temperature interval below the critical temperature. In the case of vanishing angular momentum our results carry over to the three-dimensional case.
description: 17 pages, 1 figure
Automorphisms of $\mathbb{P}^1$-bundles over rational surfaces
Creators: name: Blanc, Jérémy
name: Fanelli, Andrea
name: Terpereau, Ronan
Publisher: name: arXiv
Year: 2017
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14E07, 14M17, 14M20, 14L30, 14J30, 14J60, 14D20

description: In this paper we provide the complete classification of $\mathbb{P}^1$-bundles over smooth projective rational surfaces whose neutral component of the automorphism group is maximal. Our results hold over any algebraically closed field of characteristic zero.
description: 47 pages, final version
The Fate of Ernst Ising and the Fate of his Model
Creators: name: Ising, Thomas
name: Folk, Reinhard
name: Kenna, Ralph
name: Berche, Bertrand
name: Holovatch, Yurij
Publisher: name: arXiv
Year: 2017
Subjects: subject: History and Philosophy of Physics (physics.hist-ph)
subject: FOS: Physical sciences

description: On this, the occasion of the 20th anniversary of the "Ising Lectures" in Lviv (Ukraine), we give some personal reflections about the famous model that was suggested by Wilhelm Lenz for ferromagnetism in 1920 and solved in one dimension by his PhD student, Ernst Ising, in 1924. That work of Lenz and Ising marked the start of a scientific direction that, over nearly 100 years, delivered extraordinary successes in explaining collective behaviour in a vast variety of systems, both within and beyond the natural sciences. The broadness of the appeal of the Ising model is reflected in the variety of talks presented at the Ising lectures ( http://www.icmp.lviv.ua/ising/ ) over the past two decades but requires that we restrict this report to a small selection of topics. The paper starts with some personal memoirs of Thomas Ising (Ernst's son). We then discuss the history of the model, exact solutions, experimental realisations, and its extension to other fields.
description: 46 pages, 9 figures
Supplementary document for Selfrec-Net: self-supervised deep learning approach for reconstruction of Cherenkov-excited luminescence scanned tomography - 6142452.pdf
Creators: name: Zhang, Wenqian
name: Hu, Ting
name: Li, Zhe
name: Sun, Zhonghua
name: Jia, Kebin
name: Dou, Huijing
name: Feng, Jinchao
name: Pogue, Brian
Publisher: name: Optica Publishing Group
Year: 2025
Subjects: Uncategorized

description: Details of Selfrec-Net and the framework of DSL
A characterization of testable hypergraph properties
Creators: name: Joos, Felix
name: Kim, Jaehoon
name: Kühn, Daniela
name: Osthus, Deryk
Publisher: name: arXiv
Year: 2017
Subjects: subject: Combinatorics (math.CO)
subject: Discrete Mathematics (cs.DM)
subject: Data Structures and Algorithms (cs.DS)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: We provide a combinatorial characterization of all testable properties of $k$-uniform hypergraphs ($k$-graphs for short). Here, a $k$-graph property $P$ is testable if there is a randomized algorithm which makes a bounded number of edge queries and distinguishes with probability $2/3$ between $k$-graphs that satisfy $P$ and those that are far from satisfying $P$. For the $2$-graph case, such a combinatorial characterization was obtained by Alon, Fischer, Newman and Shapira. Our results for the $k$-graph setting are in contrast to those of Austin and Tao, who showed that for the somewhat stronger concept of local repairability, the testability results for graphs do not extend to the $3$-graph setting. Our proof relies on a random subhypergraph sampling result proved in a companion paper.
description: 40 pages; we split the paper into two parts; the second part is arXiv:2110.01570; journal version
Constraints from Heavy Higgs boson masses in the two Higgs doublet model
Creators: name: Cho, Jin-Hwan
name: Kim, Tae Young
name: Song, Jeonghyeon
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Upon the absence of signals of new physics at the LHC, a reasonable strategy is to assume that new particles are very heavy and the other model parameters are unknown yet. In the aligned two Higgs doublet model, however, heavy Higgs boson masses above 500 GeV enhance some couplings in the scalar potential, which causes a breakdown of the perturbative unitariry in general. Some tuning among model parameters is required. We find that one information on the heavy Higgs boson mass, say $M_H$, has significant theoretical implications: (i) the other heavy Higgs bosons should have similar masses to $M_H$ within $\pm \mathcal{O}(10)\%$; (ii) the inequalities from the theoretical constraints are practically reduced to an equation such that $m_{12}^2 \tanβ$ is constant, where $m_{12}^2$ is the soft $Z_2$ breaking parameter and $\tanβ$ is the ratio of two vacuum expectation values; (iii) the triple Higgs coupling $λ_{HHh}$ is constant over $\tanβ$ while $λ_{HHH}$ and $λ_{AAH}$ are linearly proportional to $\tanβ$. The double Higgs-strahlung process of $e^+ e^- \to ZHH$ is also studied, of which the total cross section is almost constant with the given $M_H$.
description: references are added. Minor corrections are made
Repercussions and remediation of tar sand tailings
Creators: name: Reich, Megan
Publisher: name: The University of British Columbia
Year: 2012

description: The production of oil from the Athabasca oil sands is one of Alberta’s most profitable industries. However, with the extraction of bitumen from the oil sands comes the problem of what to do with the wastes. Tailings ponds are the oil industries biggest concern in regards to obtaining reclamation certificates. Their toxic properties and potential health risks to both humans and the environment make reclamation tricky. However, new techniques have recently been developed that may help speed up the reclamation process.
Etale and crystalline companions, I
Creators: name: Kedlaya, Kiran S.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Number Theory (math.NT)
subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14F30, 14F20

description: Let $X$ be a smooth scheme over a finite field of characteristic $p$. Consider the coefficient objects of locally constant rank on $X$ in $\ell$-adic Weil cohomology: these are lisse Weil sheaves in étale cohomology when $\ell \neq p$, and overconvergent $F$-isocrystals in rigid cohomology when $\ell=p$. Using the Langlands correspondence for global function fields in both the étale and crystalline settings (work of Lafforgue and Abe, respectively), one sees that on a curve, any coefficient object in one category has "companions" in the other categories with matching characteristic polynomials of Frobenius at closed points. A similar statement is expected for general $X$; building on work of Deligne, Drinfeld showed that any étale coefficient object has étale companions. We adapt Drinfeld's method to show that any crystalline coefficient object has étale companions; this has been shown independently by Abe--Esnault. We also prove some auxiliary results relevant for the construction of crystalline companions of étale coefficient objects; this subject will be pursued in a subsequent paper.
description: 30 pages; v6: published version
Dynamics of Schwarz reflections: the mating phenomena
Creators: name: Lee, Seung-Yeop
name: Lyubich, Mikhail
name: Makarov, Nikolai G.
name: Mukherjee, Sabyasachi
Publisher: name: arXiv
Year: 2018
Subjects: subject: Dynamical Systems (math.DS)
subject: Complex Variables (math.CV)
subject: FOS: Mathematics
subject: 37F10, 37F30, 30D05, 30C45, 76D27, 82B21

description: We initiate the exploration of a new class of anti-holomorphic dynamical systems generated by Schwarz reflection maps associated with quadrature domains. More precisely, we study Schwarz reflection with respect to the deltoid, and Schwarz reflections with respect to the cardioid and a family of circumscribing circles. We describe the dynamical planes of the maps in question, and show that in many cases, they arise as unique conformal matings of quadratic anti-holomorphic polynomials and the ideal triangle group.
description: Same as accepted version, to appear in "Ann. Sci. \'Ec. Norm. Sup\'er. (4)"
Large data decay of Yang-Mills-Higgs fields on Minkowski and de Sitter spacetimes
Creators: name: Taujanskas, Grigalius
Publisher: name: arXiv
Year: 2019
Subjects: subject: Analysis of PDEs (math.AP)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: We extend Eardley and Moncrief's $L^\infty$ estimates for the conformally invariant Yang-Mills-Higgs equations to the Einstein cylinder. Our method is to first work on Minkowski space and localise their estimates, and then carry them to the Einstein cylinder by a conformal transformation. By patching local estimates together, we deduce global $L^\infty$ estimates on the cylinder, and extend Choquet-Bruhat and Christodoulou's small data well-posedness result to large data. Finally, by employing another conformal transformation, we deduce exponential decay rates for Yang-Mills-Higgs fields on de Sitter space, and inverse polynomial decay rates on Minkowski space.
description: 20 pages
Triangular arrangements on the projective plane
Creators: name: Marchesi, Simone
name: Vallès, Jean
Publisher: name: arXiv
Year: 2019
Subjects: subject: Algebraic Geometry (math.AG)
subject: Algebraic Topology (math.AT)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 52C35, 14F06, 32S22

description: In this work we study line arrangements consisting in lines passing through three non-aligned points. We call them triangular arrangements. We prove that any combinatorics of a triangular arrangement is always realized by a Roots-of-Unity-Arrangement, which is a particular class of triangular arrangements. Among these Roots-of Unity-Arrangements, we provide conditions that ensure their freeness. Finally, we give two triangular arrangements having the same weak combinatorics, such that one is free but the other one is not.
description: 20 pages. Published in \'Epijournal de G\'eom\'etrie Alg\'ebrique. Section 4 has been deeply revised due to an incorrect statement pointed out by the referee
title: Rezension zu Karen L. Kilcup: Stronger, Truer, Bolder. American Children's Writing, Nature, and the Environment
Creators: name: Halter, Amanda
Publisher: name: Friedrich-Schiller-Universität
Year: 2023
Subjects: subject: Romantik
subject: Kinderliteratur
subject: Ecocriticism
subject: 800
subject: 810

description: Amanda Halter rezensiert Karen L. Kilcups „Stronger, Truer, Bolder. American Children's Writing, Nature, and the Environment“ (University of Georgia Press 2021).
description: Modell Romantik: Variation - Reichweite - Aktualität
title: Rezension zu John Havard: Late Romanticism and the End of Politics. Byron, Mary Shelley, and the Last Men
Creators: name: Stevens, Jennifer
Publisher: name: Friedrich-Schiller-Universität
Year: 2023
Subjects: subject: Romantik
subject: Mary Shelley
subject: Lord Byron
subject: Politik
subject: 800
subject: 820

description: Jennifer Stevens rezensiert John Havards „Late Romanticism and the End of Politics. Byron, Mary Shelley, and the Last Men“ (Cambridge University Press 2023).
description: Modell Romantik: Variation - Reichweite - Aktualität
Walls and asymptotics for Bridgeland stability conditions on 3-folds
Creators: name: Jardim, Marcos
name: Maciocia, Antony
Publisher: name: arXiv
Year: 2019
Subjects: subject: Algebraic Geometry (math.AG)
subject: Category Theory (math.CT)
subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 14F08 (Primary) 14A30, 14D20, 14J30, 18G80, 53A05 (Secondary)

description: We consider Bridgeland stability conditions for three-folds conjectured by Bayer-Macrì-Toda in the case of Picard rank one. We study the differential geometry of numerical walls, characterizing when they are bounded, discussing possible intersections, and showing that they are essentially regular. Next, we prove that walls within a certain region of the upper half plane that parametrizes geometric stability conditions must always intersect the curve given by the vanishing of the slope function and, for a fixed value of s, have a maximum turning point there. We then use all of these facts to prove that Gieseker semistability is equivalent to asymptotic semistability along a class of paths in the upper half plane, and to show how to find large families of walls. We illustrate how to compute all of the walls and describe the Bridgeland moduli spaces for the Chern character (2,0,-1,0) on complex projective 3-space in a suitable region of the upper half plane.
description: 61 pages with 11 figures. Published in \'Epijournal de G\'eom\'etrie Alg\'ebrique
Moduli spaces on the Kuznetsov component of Fano threefolds of index 2
Creators: name: Altavilla, Matteo
name: Petkovic, Marin
name: Rota, Franco
Publisher: name: arXiv
Year: 2019
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14F08 (Primary) 14J45, 14D20 (Secondary)

description: General hyperplane sections of a Fano threefold $Y$ of index 2 and Picard rank 1 are del Pezzo surfaces, and their Picard group is related to a root system. To the corresponding roots, we associate objects in the Kuznetsov component of $Y$ and investigate their moduli spaces, using the stability condition constructed by Bayer, Lahoz, Macrì, and Stellari, and the Abel--Jacobi map. We identify a subvariety of the moduli space isomorphic to $Y$ itself, and as an application we prove a (refined) categorical Torelli theorem for general quartic double solids.
description: V3: 34 pages, substantially rewritten to improve exposition, references updated. Comments welcome! V4: 31 pages, final version
Intermolecular forces and correlations mediated by a phonon bath
Creators: name: Li, Xiang
name: Yakaboylu, Enderalp
name: Bighin, Giacomo
name: Schmidt, Richard
name: Lemeshko, Mikhail
name: Deuchert, Andreas
Publisher: name: arXiv
Year: 2019
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Atomic and Molecular Clusters (physics.atm-clus)
subject: Atomic Physics (physics.atom-ph)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Inspired by the possibility to experimentally manipulate and enhance chemical reactivity in helium nanodroplets, we investigate the effective interaction and the resulting correlations between two diatomic molecules immersed in a bath of bosons. By analogy with the bipolaron, we introduce the \emph{biangulon} quasiparticle describing two rotating molecules that align with respect to each other due to the effective attractive interaction mediated by the excitations of the bath. We study this system in different parameter regimes and apply several theoretical approaches to describe its properties. Using a Born-Oppenheimer approximation, we investigate the dependence of the effective intermolecular interaction on the rotational state of the two molecules. In the strong-coupling regime, a product-state ansatz shows that the molecules tend to have a strong alignment in the ground state. To investigate the system in the weak-coupling regime, we apply a one-phonon excitation variational ansatz, which allows us to access the energy spectrum. In comparison to the angulon quasiparticle, the biangulon shows shifted angulon instabilities and an additional spectral instability, where resonant angular momentum transfer between the molecules and the bath takes place. These features are proposed as an experimentally observable signature for the formation of the biangulon quasiparticle. Finally, by using products of single angulon and bare impurity wave functions as basis states, we introduce a diagonalization scheme that allows us to describe the transition from two separated angulons to a biangulon as a function of the distance between the two molecules.
description: 14 pages, 8 figures
Big Picard theorems and algebraic hyperbolicity for varieties admitting a variation of Hodge structures
Creators: name: Deng, Ya
Publisher: name: arXiv
Year: 2020
Subjects: subject: Algebraic Geometry (math.AG)
subject: Complex Variables (math.CV)
subject: FOS: Mathematics
subject: 32H25, 14D07, 32Q45

description: In this paper, we study various hyperbolicity properties for a quasi-compact Kähler manifold $U$ which admits a complex polarized variation of Hodge structures so that each fiber of the period map is zero-dimensional. In the first part, we prove that $U$ is algebraically hyperbolic and that the generalized big Picard theorem holds for $U$. In the second part, we prove that there is a finite étale cover $\tilde{U}$ of $U$ from a quasi-projective manifold $\tilde{U}$ such that any projective compactification $X$ of $\tilde{U}$ is Picard hyperbolic modulo the boundary $X-\tilde{U}$, and any irreducible subvariety of $X$ not contained in $X-\tilde{U}$ is of general type. This result coarsely incorporates previous works by Nadel, Rousseau, Brunebarbe and Cadorel on the hyperbolicity of compactifications of quotients of bounded symmetric domains by torsion-free lattices.
description: 31 pages. Final version, to appear in \'Epijournal de G\'eom\'etrie Alg\'ebrique
On the dual positive cones and the algebraicity of a compact Kähler manifold
Creators: name: Lin, Hsueh-Yung
Publisher: name: arXiv
Year: 2020
Subjects: subject: Algebraic Geometry (math.AG)
subject: Complex Variables (math.CV)
subject: FOS: Mathematics

description: We investigate the algebraicity of compact Kähler manifolds admitting a positive rational Hodge class of bidimension $(1,1)$. We prove that if the dual Kähler cone of a compact Kähler manifold $X$ contains a rational class as an interior point, then its Albanese variety is projective. As a consequence, we answer the Oguiso--Peternell problem for Ricci-flat compact Kähler manifolds. We also study related algebraicity problems for threefolds.
description: Published version
Higher Hida and Coleman theories on the modular curve
Creators: name: Boxer, George
name: Pilloni, Vincent
Publisher: name: arXiv
Year: 2020
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics

description: We construct Hida and Coleman theories for the degree 0 and 1 cohomology of automorphic line bundles on the modular curve and we define a p-adic duality pairing between the theories in degree 0 and 1.
An atlas of K3 surfaces with finite automorphism group
Creators: name: Roulleau, Xavier
Publisher: name: arXiv
Year: 2020
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14J28

description: We study the geometry of the K3 surfaces $X$ with a finite number automorphisms and Picard number $\geq 3$. We describe these surfaces classified by Nikulin and Vinberg as double covers of simpler surfaces or embedded in a projective space. We study moreover the configurations of their finite set of $(-2)$-curves.
description: 95 pages, 80 figures, 1 Table
Group-theoretic Johnson classes and a non-hyperelliptic curve with torsion Ceresa class
Creators: name: Bisogno, Dean
name: Li, Wanlin
name: Litt, Daniel
name: Srinivasan, Padmavathi
Publisher: name: arXiv
Year: 2020
Subjects: subject: Algebraic Geometry (math.AG)
subject: Geometric Topology (math.GT)
subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 2010. 14C25, 14F20, 14F30, 14F35, 14G32, 14H45

description: Let l be a prime and G a pro-l group with torsion-free abelianization. We produce group-theoretic analogues of the Johnson/Morita cocycle for G -- in the case of surface groups, these cocycles appear to refine existing constructions when l=2. We apply this to the pro-l etale fundamental groups of smooth curves to obtain Galois-cohomological analogues, and discuss their relationship to work of Hain and Matsumoto in the case the curve is proper. We analyze many of the fundamental properties of these classes and use them to give an example of a non-hyperelliptic curve whose Ceresa class has torsion image under the l-adic Abel-Jacobi map.
description: 18 pages, final version
Assessment of drinking water at UBC : a consideration of water quality, energy and economic costs, with practical recommendations
Creators: name: Tran, Allina
name: Li, Beatrice
name: McNicholl, Darcy
name: Noble, Josh
name: Van Dijk, Katherine
name: Lee, Nicole
Publisher: name: The University of British Columbia
Year: 2012

description: Students, faculty, and staff at the UBC Vancouver campus currently have three choices for drinking water; tap water from drinking fountains, bottled water sold at food service locations and vending machines, and water filtered by various additional filtration systems. These three drinking water systems each have different environmental, economic, and health implications. People have begun to question the necessity of the bottled water industry due to increasing awareness of its environmental costs. However, UBC students, staff and faculty may still choose bottled water over tap water if they have concerns or misconceptions over tap water quality. In response to concerns over the environmental impacts of bottled water and tap water quality, the UBC Alma Mater Society (AMS) has invested in the installation of water filtration units known as WaterFillz stations. There have been previous student papers written to compare the environmental, economic and social implications of these three drinking water choices; bottled water, tap water, and WaterFillz filtered water. While these papers have provided a good overview of the general impacts of the three drinking water options, our project aims to further develop the analysis by exploring questions in a more systematic and quantitative way. Research Objectives Environmental Implications 1a) Estimate and compare embodied energy costs of the bottled water, tap water, and WaterFillz systems and identify system components which contribute the most. 1b) Qualitatively discuss other environmental implications such as waste generation and recycling. Water Quality Assessment 2) Determine whether heavy metal contamination of campus tap water merits cause for concern. Economic Considerations 3a) Quantify the economic implications of the potential removal of bottled water from UBC campus. 3b) Compare the economic costs of three different water filtration systems; Elkay, Brita, WaterFillz. Recommendations for the placement of WaterFillz stations 7 4) Make recommendations for where to install additional WaterFillz units on campus, based on conclusions of the water quality assessment combined with survey responses and building traffic data.
Quasibounded plurisubharmonic functions
Creators: name: Nilsson, Mårten
name: Wikström, Frank
Publisher: name: arXiv
Year: 2020
Subjects: subject: Complex Variables (math.CV)
subject: FOS: Mathematics
subject: Primary 32U05, Secondary 32U15, 31C10, 31C05

description: We extend the notion of quasibounded harmonic functions to the plurisubharmonic setting. As an application, using the theory of Jensen measures, we show that certain generalized Dirichlet problems with unbounded boundary data admit unique solutions, and that these solutions are continuous outside a pluripolar set.