cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The edit distance function and symmetrization
Creators: name: Martin, Ryan R.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05C35, 05C80

description: The edit distance between two graphs on the same labeled vertex set is the size of the symmetric difference of the edge sets. The distance between a graph, $G$, and a hereditary property, ${\cal H}$, is the minimum of the distance between $G$ and each $G'\in{\cal H}$. The edit distance function of ${\cal H}$ is a function of $p\in[0,1]$ and is the limit of the maximum normalized distance between a graph of density $p$ and ${\cal H}$. This paper develops a method, called localization, for computing the edit distance function of various hereditary properties. For any graph $H$, ${\rm Forb}(H)$ denotes the property of not having an induced copy of $H$. This paper gives some results regarding estimation of the function for an arbitrary hereditary property. This paper also gives the edit distance function for ${\rm Forb}(H)$, where $H$ is a cycle on 9 or fewer vertices.
description: 21 pages, 8 figures
Biefeld - Brown effect and space curvature of electromagnetic field
Creators: name: Antano, Maknickas Algirdas
Publisher: name: arXiv
Year: 2010
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: With applying of new proposed electromagnetic gravity Lagrangian together with Einstein-Hilbert equation not zero space curvature was derived. The curvature gives "a priory" postulate of equivalence of mass and electromagnetic field gravity properties. The non zero trace of energy-stress tensor of electrical field changes space curvature of gravity mass, which yields to prediction of dependence of capacitor gravity mass from capacitor capacitance and voltage values, observed in Biefeld-Brown effect. The other, not observed prediction could be applied to coil gravity mass dependence from coil inductance and current values. New physical constant, electromagnetic field gravity constant, was introduced to conform with theoretical and experimental data.
description: 9 pages
Magneto-optical response of the Weyl semimetal NbAs: Experimental results and hyperbolic-band computations
Creators: name: Polatkan, S.
name: Uykur, E.
name: Wyzula, J.
name: Orlita, M.
name: Shekhar, C.
name: Felser, C.
name: Dressel, M.
name: Pronin, A. V.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The magneto-optical properties of (001)-oriented NbAs single crystals have been studied in the spectral range from 5 to 150 meV and in magnetic fields of up to 13 T. A rich spectrum of inter-Landau-level transitions is revealed by these measurements. The transitions follow a square-root-like dependence with magnetic field, but the simple linear-band approximation is unable to accurately reproduce the observed behavior of the transitions in applied fields. We argue that the detected magneto-optical spectra should be related to crossing hyperbolic bands, which form the W1 cones. We propose a model Hamiltonian, which describes coupled hyperbolic bands and reproduces the shape of the relevant bands in NbAs. The magneto-optical spectra computed from this Hamiltonian nicely reproduce our observations. We conclude that the hyperbolic-band approach is a minimal model to adequately describe the magneto-optical response of NbAs and that the chiral (conical) bands do not explicitly manifest themselves in the spectra.
description: 10 pages, SM included
Analysis of Two-Particle Systems in 2 + 1 Gravity Through Hamiltonian Dynamics
Creators: name: Yale, Alexandre
name: Mann, R. B.
name: Ohta, Tadayuki
Publisher: name: arXiv
Year: 2010
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study the dynamics of particles coupled to gravity in (2 + 1) dimensions. Using the ADM formalism, we derive the general Hamiltonian for an N-body system and analyze the dynamics of a two-particle system. Non-linear terms are found up to second-order order in κ in the general case, and to every order in the quasi-static limit.
description: 8 pages, no figures. v2: Minor corrections; Journal ref added
Rethinking Object Saliency Ranking: A Novel Whole-flow Processing Paradigm
Creators: name: Song, Mengke
name: Li, Linfeng
name: Wu, Dunquan
name: Song, Wenfeng
name: Chen, Chenglizhao
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Existing salient object detection methods are capable of predicting binary maps that highlight visually salient regions. However, these methods are limited in their ability to differentiate the relative importance of multiple objects and the relationships among them, which can lead to errors and reduced accuracy in downstream tasks that depend on the relative importance of multiple objects. To conquer, this paper proposes a new paradigm for saliency ranking, which aims to completely focus on ranking salient objects by their "importance order". While previous works have shown promising performance, they still face ill-posed problems. First, the saliency ranking ground truth (GT) orders generation methods are unreasonable since determining the correct ranking order is not well-defined, resulting in false alarms. Second, training a ranking model remains challenging because most saliency ranking methods follow the multi-task paradigm, leading to conflicts and trade-offs among different tasks. Third, existing regression-based saliency ranking methods are complex for saliency ranking models due to their reliance on instance mask-based saliency ranking orders. These methods require a significant amount of data to perform accurately and can be challenging to implement effectively. To solve these problems, this paper conducts an in-depth analysis of the causes and proposes a whole-flow processing paradigm of saliency ranking task from the perspective of "GT data generation", "network structure design" and "training protocol". The proposed approach outperforms existing state-of-the-art methods on the widely-used SALICON set, as demonstrated by extensive experiments with fair and reasonable comparisons. The saliency ranking task is still in its infancy, and our proposed unified framework can serve as a fundamental strategy to guide future work.
description: 16 pages, 14 figures, accepted by IEEE Transactions on Image Processing
Diffuse supernova neutrinos at underground laboratories
Creators: name: Lunardini, Cecilia
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: I review the physics of the Diffuse Supernova Neutrino flux (or Background, DSNB), in the context of future searches at the next generation of neutrino observatories. The theory of the DSNB is discussed in its fundamental elements, namely the cosmological rate of supernovae, neutrino production inside a core collapse supernova, redshift, and flavor oscillation effects. The current upper limits are also reviewed, and results are shown for the rates and energy distributions of the events expected at future liquid argon and liquid scintillator detectors of O(10) kt mass, and water Cherenkov detectors up to a 0.5 Mt mass. Perspectives are given on the significance of future observations of the DSNB, both at the discovery and precision phases, for the investigation of the physics of supernovae and of the properties of the neutrino.
description: latex, 94 pages. 35 figures and 13 tables. Version extensively updated. Accepted in Astroparticle Physics
Development of Multi-Model Transportation Investment Priorities
Creators: name: O'Doherty, John D.
name: Melinyshyn, Walter S.
name: Crowther, Richard
name: O'Doherty, John D.
name: Melinyshyn, Walter S.
name: Crowther, Richard
Publisher: name: Unknown
Year: 1973
Subjects: Public Economics

description: Presented at the 1st International Conference on Transportation Research, June 1973, Bruges, Belgium
"The days are long, but the years are short" : records of new parenthood in the pandemic
Creators: name: Everly, Alice Zoe
Publisher: name: University of British Columbia
Year: 2022

description: New parenthood and the Covid-19 pandemic are both transformative experiences that are reflected in personal records and recordkeeping practices. The growing literature on personal archives recognizes the role of personal records in facilitating relationships and in shaping and documenting personal development; the central role of affect in the creation of records; and the importance of expanding the concept of the record. This project explores the relevancy of these insights in one specific area: recordkeeping by new parents during the pandemic. Through semi-structured interviews and autoethnography, I endeavored to determine how pandemic conditions have interacted with new parents’ urges to record their pregnancies, their births, and their new babies’ early lives; the nature of the records they have kept; and their recordkeeping experiences. My three main foci were maintaining connection with loved ones, seeking social recognition of parenthood, and gaining a sense of control over the passage of time. Because the conditions surrounding both new parenthood and the pandemic tend to transform one’s experience of the passage of time, these conditions create a unique window into how personal recordkeeping interacts with the temporal foundations of the archival concept of the ‘record.’ This project responds to recent critiques and expansions of the concept of the record, providing a detailed analysis of personal recordkeeping practices that do not conform to the clear temporal or personal distinctions that undergird archival theory. This results in a renewal of the archival concept of the record. The creation, sharing, use, and preservation of records by new parents presents a portrait of records and recordkeeping that 1) challenges clear separations between records, creators, custodians, users, and the subjects of records; 2) defies a clear distinction between primary and secondary value; 3) expands the inclusiveness of the concept of a ‘record’; and 4) (by virtue of 1-3) complicates the linear view of time on which mainstream archival theory is founded. My analysis of the recordkeeping practices of new parents in the pandemic allows for both a temporal reconceptualization of the record, and its recognition as an embodied and dynamic entity that is open for reconfiguration with each new activation.
An effective approach to same sign top pair production at the LHC and the forward-backward asymmetry at the Tevatron
Creators: name: Degrande, Celine
name: Gerard, Jean-Marc
name: Grojean, Christophe
name: Maltoni, Fabio
name: Servant, Geraldine
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We study the phenomenology of same sign top pair production at the LHC in a model-independent way. The complete set of dimension six operators involving two top (or anti-top) quarks is introduced and the connection with all possible t- or s-channel particle exchanges is established. Only in the former case, same and opposite sign top pair production can be related. We find that while current Tevatron data disfavor t-channel models, other production mechanisms are viable and can be tested at the LHC.
description: 13 pages
Thermal and electrostatic tuning of surface phonon-polaritons in LaAlO3/SrTiO3 heterostructures
Creators: name: Zhou, Yixi
name: Waelchli, Adrien
name: Boselli, Margherita
name: Crassee, Iris
name: Bercher, Adrien
name: Luo, Weiwei
name: Duan, Jiahua
name: van Mechelen, J. L. M.
name: van der Marel, Dirk
name: Teyssier, Jérémie
name: Rischau, Carl Willem
name: Korosec, Lukas
name: Gariglio, Stefano
name: Triscone, Jean-Marc
name: Kuzmenko, Alexey B.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Phonon polaritons are promising for infrared applications due to a strong light-matter coupling and subwavelength energy confinement they offer. Yet, the spectral narrowness of the phonon bands and difficulty to tune the phonon polariton properties hinder further progress in this field. SrTiO3 - a prototype perovskite oxide - has recently attracted attention due to two prominent far-infrared phonon polaritons bands, albeit without any tuning reported so far. Here we show, using cryogenic infrared near-field microscopy, that long-propagating surface phonon polaritons are present both in bare SrTiO3 and in LaAlO3/SrTiO3 heterostructures hosting a two-dimensional electron gas. The presence of the two-dimensional electron gas increases dramatically the thermal variation of the upper limit of the surface phonon polariton band due to temperature dependent polaronic screening of the surface charge carriers. Furthermore, we demonstrate a tunability of the upper surface phonon polariton frequency in LaAlO3/SrTiO3 via electrostatic gating. Our results suggest that oxide interfaces are a new platform bridging unconventional electronics and long-wavelength nanophotonics.
description: Nature Communications, in press
On the Lower Central Series Quotients of a Graded Associative Algebra
Creators: name: Balagovic, Martina
name: Balasubramanian, Anirudha
Publisher: name: arXiv
Year: 2010
Subjects: subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics
subject: 14A22, 13N05

description: We continue the study of the lower central series L_i(A) and its successive quotients B_i(A) of a noncommutative associative algebra A, defined by L_1(A)=A, L_{i+1}(A)=[A,L_i(A)], and B_i(A)=L_i(A)/L_{i+1}(A). We describe B_{2}(A) for A a quotient of the free algebra on two or three generators by the two-sided ideal generated by a generic homogeneous element. We prove that it is isomorphic to a certain quotient of Kaehler differentials on the non-smooth variety associated to the abelianization of A.
description: Some errors in computational data in Appendix A corrected
Generation of wakefields by whistlers in spin quantum magnetoplasmas
Creators: name: Misra, A. P.
name: Brodin, G.
name: Marklund, M.
name: Shukla, P. K.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The excitation of electrostatic wakefields in a magnetized spin quantum plasma by the classical as well as the spin-induced ponderomotive force (CPF and SPF, respectively) due to whistler waves is reported. The nonlinear dynamics of the whistlers and the wakefields is shown to be governed by a coupled set of nonlinear Schrödinger (NLS) and driven Boussinesq-like equations. It is found that the quantum force associated with the Bohm potential introduces two characteristic length scales, which lead to the excitation of multiple wakefields in a strongly magnetized dense plasma (with a typical magnetic field strength $B_{0}\gtrsim10^{9}$ T and particle density $n_{0}\gtrsim10^{36}$ m$^{-3}$), where the SPF strongly dominates over the CPF. In other regimes, namely $B_{0}\lesssim10^{8}$ T and $\ n_{0}\lesssim10^{35}$ m$^{-3}$, where the SPF is comparable to the CPF, a plasma wakefield can also be excited self-consistently with one characteristic length scale. Numerical results reveal that the wakefield amplitude is enhanced by the quantum tunneling effect, however it is lowered by the external magnetic field. Under appropriate conditions, the wakefields can maintain high coherence over multiple plasma wavelengths and thereby accelerate electrons to extremely high energies. The results could be useful for particle acceleration at short scales, i.e. at nano- and micrometer scales, in magnetized dense plasmas where the driver is the whistler wave instead of a laser or a particle beam.
description: 8 pages, 2 figures; Revised version to appear in Physics of Plasmas (Dec. 2010 issue)
A Zero Sum User Charge System for Rationing the Use of Inland Waterway Locks
Creators: name: Carroll, Joseph L.
name: Wilson, Hoyt G.
name: Carroll, Joseph L.
name: Wilson, Hoyt G.
Publisher: name: Unknown
Year: 1973
Subjects: Public Economics

description: Presented at the 1st International Conference on Transportation Research, June 1973, Bruges, Belgium
VB-groupoids and representation theory of Lie groupoids
Creators: name: Gracia-Saz, Alfonso
name: Mehta, Rajan Amit
Publisher: name: arXiv
Year: 2010
Subjects: subject: Differential Geometry (math.DG)
subject: Symplectic Geometry (math.SG)
subject: FOS: Mathematics
subject: 18D05, 22A22, 53D17

description: A VB-groupoid is a Lie groupoid equipped with a compatible linear structure. In this paper, we describe a correspondence, up to isomorphism, between VB-groupoids and 2-term representations up to homotopy of Lie groupoids. Under this correspondence, the tangent bundle of a Lie groupoid G corresponds to the "adjoint representation" of G. The value of this point of view is that the tangent bundle is canonical, whereas the adjoint representation is not. We define a cochain complex that is canonically associated to any VB-groupoid. The cohomology of this complex is isomorphic to the groupoid cohomology with values in the corresponding representations up to homotopy. When applied to the tangent bundle of a Lie groupoid, this construction produces a canonical complex that computes the cohomology with values in the adjoint representation. Finally, we give a classification of regular 2-term representations up to homotopy. By considering the adjoint representation, we find a new cohomological invariant associated to regular Lie groupoids.
description: v5: Introduction is completely rewritten, many other improvements in the exposition. v6: Implements numerous corrections and changes suggested by referees, most notably a significant simplification of the calculations in Appendix A.2. Final version, to appear in J. Symp. Geom
An Extension of the Non-Inferior Set Estimation Algorithm for Many Objectives
Creators: name: Raimundo, Marcos M.
name: Ferreira, Paulo A. V.
name: Von Zuben, Fernando J.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics

description: This work proposes a novel multi-objective optimization approach that globally finds a representative non-inferior set of solutions, also known as Pareto-optimal solutions, by automatically formulating and solving a sequence of weighted sum method scalarization problems. The approach is called MONISE (Many-Objective NISE) because it represents an extension of the well-known non-inferior set estimation (NISE) algorithm, which was originally conceived to deal with two-dimensional objective spaces. The proposal is endowed with the following characteristics: (1) uses a mixed-integer linear programming formulation to operate in two or more dimensions, thus properly supporting many (i.e., three or more) objectives; (2) relies on an external algorithm to solve the weighted sum method scalarization problem to optimality; and (3) creates a faithful representation of the Pareto frontier in the case of convex problems, and a useful approximation of it in the non-convex case. Moreover, when dealing specifically with two objectives, some additional properties are portrayed for the estimated non-inferior set. Experimental results validate the proposal and indicate that MONISE is competitive, in convex and non-convex (combinatorial) problems, both in terms of computational cost and the overall quality of the non-inferior set, measured by the acquired hypervolume.
description: This paper is identical to arXiv:1709.00797 but I created a new submission by mistake
Weak Values as Context Dependent Values of Observables and Born's Rule
Creators: name: Hosoya, Akio
name: Koga, Minoru
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We characterize a value of an observable by a `sum rule' for generally non-commuting observables and a `product rule' when restricted to a maximal commuting subalgebra of observables together with the requirement that the value is unity for the projection operator of the prepared state and the values are zero for the projection operators of the states which are orthogonal to the prepared state. The crucial requirement is that the expectation value and the variance of an observable should be independent of the way of measurement, i.e., the choice of the maximal commuting subalgebra of observables. We shall call the value a {\it `contextual value'}. We show that the contextual value of an observable coincides with the weak value advocated by Aharonov and his colleagues by demanding the consistency of quantum mechanics with Kolmogorov's measure theory of probability. This also gives a derivation of Born's rule, which is one of the axioms of conventional quantum mechanics.
description: 6 pages
Logical quantum processor based on reconfigurable atom arrays
Creators: name: Bluvstein, Dolev
name: Evered, Simon J.
name: Geim, Alexandra A.
name: Li, Sophie H.
name: Zhou, Hengyun
name: Manovitz, Tom
name: Ebadi, Sepehr
name: Cain, Madelyn
name: Kalinowski, Marcin
name: Hangleiter, Dominik
name: Ataides, J. Pablo Bonilla
name: Maskara, Nishad
name: Cong, Iris
name: Gao, Xun
name: Rodriguez, Pedro Sales
name: Karolyshyn, Thomas
name: Semeghini, Giulia
name: Gullans, Michael J.
name: Greiner, Markus
name: Vuletic, Vladan
name: Lukin, Mikhail D.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: Suppressing errors is the central challenge for useful quantum computing, requiring quantum error correction for large-scale processing. However, the overhead in the realization of error-corrected ``logical'' qubits, where information is encoded across many physical qubits for redundancy, poses significant challenges to large-scale logical quantum computing. Here we report the realization of a programmable quantum processor based on encoded logical qubits operating with up to 280 physical qubits. Utilizing logical-level control and a zoned architecture in reconfigurable neutral atom arrays, our system combines high two-qubit gate fidelities, arbitrary connectivity, as well as fully programmable single-qubit rotations and mid-circuit readout. Operating this logical processor with various types of encodings, we demonstrate improvement of a two-qubit logic gate by scaling surface code distance from d=3 to d=7, preparation of color code qubits with break-even fidelities, fault-tolerant creation of logical GHZ states and feedforward entanglement teleportation, as well as operation of 40 color code qubits. Finally, using three-dimensional [[8,3,2]] code blocks, we realize computationally complex sampling circuits with up to 48 logical qubits entangled with hypercube connectivity with 228 logical two-qubit gates and 48 logical CCZ gates. We find that this logical encoding substantially improves algorithmic performance with error detection, outperforming physical qubit fidelities at both cross-entropy benchmarking and quantum simulations of fast scrambling. These results herald the advent of early error-corrected quantum computation and chart a path toward large-scale logical processors.
description: See ancillary files: five supplementary movies and captions. Main text + Methods
Numerical investigation of the late-time Kerr tails
Creators: name: Racz, Istvan
name: Toth, Gabor Zsolt
Publisher: name: arXiv
Year: 2011
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The late-time behavior of a scalar field on fixed Kerr background is examined in a numerical framework incorporating the techniques of conformal compactification and hyperbolic initial value formulation. The applied code is 1+(1+2) as it is based on the use of the spectral method in the angular directions while in the time-radial section fourth order finite differencing, along with the method of lines, is applied. The evolution of various types of stationary and non-stationary pure multipole initial states are investigated. The asymptotic decay rates are determined not only in the domain of outer communication but along the event horizon and at future null infinity as well. The decay rates are found to be different for stationary and non-stationary initial data, and they also depend on the fall off properties of the initial data toward future null infinity. The energy and angular momentum transfers are found to show significantly different behavior in the initial phase of the time evolution. The quasinormal ringing phase and the tail phase are also investigated. In the tail phase, the decay exponents for the energy and angular momentum losses at future null infinity are found to be smaller than at the horizon which is in accordance with the behavior of the field itself and it means that at late times the energy and angular momentum falling into the black hole become negligible in comparison with the energy and angular momentum radiated toward future null infinity. The energy and angular momentum balances are used as additional verifications of the reliability of our numerical method.
description: 33 pages, 12 figures
Truth commissions without transition : examining Canadian inquiries
Creators: name: Wiebe, Jazlyn Amalia
Publisher: name: University of British Columbia
Year: 2022

description: Truth commissions have become an increasingly popular mechanism for settler states to address past colonial violence. The transitional justice (TJ) literature has increasingly analyzed the use of TJ mechanisms in established democracies where no recent transition has occurred. Previous research has addressed why states adopt truth commissions, though these studies do not distinguish between transitional and non-transitional contexts. This thesis seeks to understand which mechanisms drive settler states to adopt a truth commission. Using publicly available data from the Canadian parliament, media and interviews, this thesis employs a quantitative comparative analysis of three contexts in Canada where a truth commission was adopted or rejected by the federal government: the adoption of the Truth and Reconciliation Commission, the rejection of an inquiry into the killing of Inuit sled dogs, and the adoption of the National Inquiry into Missing and Murdered Indigenous Women and Girls. I argue that settler states adopt truth commissions in response to bottom-up activism which threatens the legitimacy of the liberal settler state as the political authority. I find that in the TRC and the National Inquiry into MMIWG, domestic and transnational advocacy engages with the liberal government in power and the public to reveal the inequality between indigenous people and settlers which was authorized by the state. In response, the government will approve a truth commission in order to maintain the legitimacy of the settler state. Given the state’s liberal orientation towards truth commissions, it would be useful for transitional justice practitioners to further consider how the TJ can be decolonized.
ОРГАНИЗАЦИЯ НРАВСТВЕННОГО ВОСПИТАНИЯ И САМОВОСПИТАНИЯ СТУДЕНТОВ
Creators: name: Каршинский государственный технический университет Кафедра узбекского и русского языков Н.И. Шадманова
Publisher: name: Zenodo
Year: 2025

description: В статье рассматриваются ключевые аспекты организации нравственного воспитания и самовоспитания студентов, особенно будущих педагогов. Подчеркивается, что эффективное нравственное развитие возможно только при сочетании внешних воспитательных воздействий (со стороны образовательной среды) и внутренней работы личности над собой.

Ключевые слова: нравственное воспитание, самовоспитание, педагогическая этика, профессиональное становление, методы воспитания
Periodicity of d-cluster-tilted algebras
Creators: name: Dugas, Alex
Publisher: name: arXiv
Year: 2010
Subjects: subject: Representation Theory (math.RT)
subject: FOS: Mathematics

description: It is well-known that any maximal Cohen-Macaulay module over a hypersurface has a periodic free resolution of period 2. Auslander, Reiten and Buchweitz have used this periodicity to explain the existence of periodic projective resolutions over certain finite-dimensional algebras which arise as stable endomorphism rings of Cohen-Macaulay modules. These algebras are in fact periodic, meaning that they have periodic projective resolutions as bimodules and thus periodic Hochschild cohomology as well. The goal of this article is to generalize this construction of periodic algebras to the context of Iyama's higher AR-theory. We start by considering projective resolutions of functors on a maximal (d-1)-orthogonal subcategory C of an exact Frobenius category B. If C is fixed by the d-th syzygy functor of B, then we show that this d-th syzygy functor induces the (2+d)-th syzygy on the category of finitely presented functors on the stable category of C. If C has finite type, i.e., if C = add(T) for a d-cluster tilting object T, then we show that the stable endomorphism ring of T has a quasi-periodic resolution over its enveloping algebra. Moreover, this resolution will be periodic if some higher syzygy functor is isomorphic to the identity on the stable category of C. It follows, in particular, that 2-C.Y. tilted algebras arising as stable endomorphism rings of Cohen-Macaulay modules over curve singularities, as in the work of Burban, Iyama, Keller and Reiten have periodic bimodule resolutions of period 4.
description: Final, revised version. Published in J. Algebra
Merging history of massive galaxies at 3
Creators: name: Li, Kemeng
name: Jiang, Zhen
name: He, Ping
name: Guo, Qi
name: Wang, Jie
Publisher: name: arXiv
Year: 2023
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The observational data of high redshift galaxies become increasingly abundant, especially since the operation of the James Webb Space Telescope (JWST), which allows us to verify and optimize the galaxy formation model at high redshifts. In this work, we investigate the merging history of massive galaxies at $3 < z < 6$ using a well-developed semi-analytic galaxy formation catalogue. We find that the major merger rate increases with redshift up to 3 and then flattens. The fraction of wet mergers, during which the sum of the cold gas mass is higher than the sum of the stellar mass in two merging galaxies, also increases from $\sim$ 34\% at $z = 0$ to 96\% at $z = 3$. Interestingly, almost all major mergers are wet at $z > 3$ . This can be attributed to the high fraction ($> 50\%$) of cold gas at $z > 3$. In addition, we study some special systems of massive merging galaxies at $3 < z < 6$, including the massive gas-rich major merging systems and extreme dense proto-clusters, and investigate the supermassive black hole-dark matter halo mass relation and dual AGNs. We find that the galaxy formation model reproduces the incidence of those observed massive galaxies, but fails to reproduce the relation between the supermassive black hole mass and the dark matter halo mass at $z \sim 6$. The latter requires more careful estimates of the supermassive black hole masses observationally. Otherwise, it could suggest modifications of the modeling of the supermassive black hole growth at high redshifts.
description: 9 pages,8figures
Tagged jets and jet reconstruction as a probe of QGP induced partonic energy loss
Creators: name: Neufeld, R. B.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Recent experimental advances at the Relativistic Heavy Ion Collider (RHIC) and the large center-of-mass energies available to the heavy-ion program at the Large Hadron Collider (LHC) will enable strongly interacting matter at high temperatures and densities, that is, the quark-gluon plasma (QGP), to be probed in unprecedented ways. Among these exciting new probes are fully-reconstructed inclusive jets and the away-side hadron showers associated with a weakly or electromagnetically interacting boson, or, tagged jets. Full jet reconstruction provides an experimental window into the mechanisms of quark and gluon dynamics in the QGP which is not accessible via leading particles and leading particle correlations. Theoretical advances in this growing field can help resolve some of the most controversial points in heavy ion physics today. I here discuss the power of jets to reveal the spectrum of induced radiation, thereby shedding light on the applicability of the commonly used energy loss formalisms and present results on the production and subsequent suppression of high energy jets tagged with Z bosons in relativistic heavy-ion collisions at RHIC and LHC energies using the Gyulassy-Levai-Vitev (GLV) parton energy loss approach.
description: Proceedings for the Jets in Proton-Proton and Heavy-Ion Collisions Workshop held in Prague this August. 5 pages and 4 figures
Bound-state effects on kinematical distributions of top quarks at hadron colliders
Creators: name: Sumino, Yukinari
name: Yokoya, Hiroshi
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: First we present a theoretical framework to compute the fully differential cross sections for the top-quark productions and their subsequent decays at hadron colliders, incorporating the bound-state effects which are important in the t\bar{t} threshold region. We include the bound-state effects such that the cross sections are correct in the LO approximation both in the threshold and high-energy regions. Then, based on this framework we compute various kinematical distributions of top quarks as well as of their decay products at the LHC, by means of Monte-Carlo event-generation. These are compared with the corresponding predictions based on conventional perturbative QCD. In particular, we find a characteristic bound-state effect on the (bW^+)-(\bar{b}W^-) double-invariant-mass distribution, which is deformed to the lower invariant-mass side in a correlated manner.
description: 40 pages, 25 figures; minor corrections, references added; a typo in Eq. (B.9) corrected
Mathematical properties of nested residues and their application to multi-loop scattering amplitudes
Creators: name: Aguilera-Verdugo, J. Jesus
name: Hernandez-Pinto, Roger J.
name: Rodrigo, German
name: Sborlini, German F. R.
name: Torres Bobadilla, William J.
Publisher: name: Deutsches Elektronen-Synchrotron, DESY, Hamburg
Year: 2020

description: The computation of multi-loop multi-leg scattering amplitudes plays a key role to improve the precision of theoretical predictions for particle physics at high-energy colliders. In this work, we focus on the mathematical properties of the novel integrand-level representation of Feynman integrals, which is based on the Loop-Tree Duality (LTD). We explore the behaviour of the multi-loop iterated residues and explicitly show, by developing a general formal proof for the first time, that contributions associated to displaced poles are cancelled out. The remaining residues, called nested residues as originally introduced in Ref. \cite{Verdugo:2020kzh}, encode the relevant physical information and are naturally mapped onto physical configurations associated to nondisjoint on-shell states. By going further on the mathematical structure of the nested residues, we prove that unphysical singularities vanish, and show how the final expressions can be written by using only causal denominators. In this way, we provide a mathematical proof for the all-loop formulae presented in Ref. \cite{Aguilera-Verdugo:2020kzc}.
Development and proof of concept of a novel methodology utilizing contrast enhanced ultrasound to assess perfusion of the costal diaphragm muscle in humans
Creators: name: Cotton, Paul
Publisher: name: University of British Columbia
Year: 2022

description: During maximal or near maximal exercise, cardiac reserve is diminished and there is evidence that respiratory and locomotor muscles compete for a finite blood supply. However, human data describing blood flow distribution between locomotor and respiratory muscles during exercise is limited and the current method of measuring respiratory muscle blood flow (near infrared spectroscopy in combination with indocyanine green; NIRS-ICG) has produced contradictory results. Interpretation of these conflicting results is difficult for two reasons. First, respiratory muscle perfusion has only been measured in secondary respiratory muscles and perfusion of the primary respiratory muscle, the diaphragm, has not been considered. Second, NIRS-ICG is limited in its spatial resolution and depth of penetration. Ultrasound inherently provides improved spatial resolution and depth control over NIRS-ICG. Thus, the purpose of this thesis was to explore the possibility of using contrast enhanced ultrasound (CEUS) to measure indices of blood flow and volume from the intercostal and costal diaphragm muscles during increases in respiratory muscle work. We collected data in six participants under varying circumstances with the goal of offering the optimal methodology and image processing workflow for future research. We demonstrated that it is feasible to quantify CEUS-derived indices of blood flow/volume from the chest wall, diaphragm and liver regions during increases in respiratory work. The feasibility of our blood flow analysis was improved in the presence of apnea. On average, frame by frame angle correction of the ultrasound images improved the quality of data produced from the chest wall and diaphragm regions but the effect of angle correction was variable. We acknowledge that the feasibility of the destruction-replenishment CEUS technique was not explored in this thesis and speculate that the development of an automated deep learning approach to image segmentation may offer utility in the advancement/refinement of our approach. In conclusion, our recommendations for future research are to (1) investigate the use of an automated deep learning approach for image segmentation, (2) compare the utility of the destruction-replenishment versus bolus-injection CEUS techniques for the application of CEUS in the costal diaphragm region, and (3) utilize apnea during the CEUS protocol.
Warming the MATRIX: a Climate Assessment under Uncertainty and Heterogeneity
Creators: name: Bazzana, Davide
name: Rizzati, Massimiliano
name: Ciola, Emanuele
name: Turco, Enrico
name: Vergalli, Sergio
Publisher: name: Unknown
Year: 2023
Subjects: subject: Environmental Economics and Policy
subject: Research Methods/ Statistical Methods
subject: Resource /Energy Economics and Policy
subject: energy sector
subject: agent-based models
subject: macroeconomic dynamics
subject: climate change
subject: climate policy
subject: emission abatement

description: This paper explores the potential impacts of climate change and mitigation policies on the Euro Area, considering the uncertainty and heterogeneity in both climate and economic systems. Using the MATRIX model, a multi-sector and multi-agent macroeconomic model, we simulate various climate scenarios by employing different carbon cycle models, damage functions, and marginal abatement curves found in the literature. We find that heterogeneous climate damages amplify both the magnitude and the volatility of GDP losses associated with global warming. By the end of the century, we estimate that assuming homogeneous shocks may underestimate the effects of climate change on aggregate output by up to one-third. Moreover, we find that the speed and feasibility of a low-carbon transition crucially depend on (i) the stringency of emission reduction targets, which determine the level of a carbon tax, and (ii) the rate of technological progress, which influences the shape of the abatement cost curve.
Quantum teleportation of non-classical wave-packets, an effective multimode theory
Creators: name: Benichi, Hugo
name: Takeda, Shuntaro
name: Lee, Noriyuki
name: Furusawa, Akira
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We develop a simple and efficient theoretical model to understand the quantum properties of broadband continuous variable quantum teleportation. We show that, if stated properly, the problem of multimode teleportation can be simplified to teleportation of a single effective mode that describes the input state temporal characteristic. Using that model, we show how the finite bandwidth of squeezing and external noise in the classical channel affect the output teleported quantum field. We choose an approach that is especially relevant for the case of non-Gaussian non-classical quantum states and we finally back-test our model with recent experimental results.
description: Many typos corrected, some mistakes in the reference section corrected
Prosodic Analysis and Asian Linguistics: To honour R.K. Sprigg
Creators: name: Bradley, D. (Ed.)
name: Henderson, E.J.A. (Ed.)
name: Mazaudon, M. (Ed.)
Publisher: name: Pacific Linguistics
Year: 1989

description: C-104
description: Contents iii{D. BRADLEY and E.J.A. HENDERSON and M. MAZAUDON} RICHARD KEITH SPRIGG 1-5 I. PROSODIC ANALYSIS {ROBINS, Robert H.}. Prosodic Analysis: a retrospect over four decades 7-16 {WELLS, William H.G.}. Pre-final focus accents in English: a comparative study 17-32 {LOCAL, John and SIMPSON, Adrian}. The domain of gemination in Malayalam 33-42 {KELLY, John}. The velar labials in ChiDigo (Bantu) 43-50 {HENDERSON, Eugenie J.A.}. J. R. Firth's 'first impressions' of Tibetan pronunciation 51-54 II. TONE AND PHONOLOGY {ROSE, Philip John}. On the non-equivalence of fundamental frequency and pitch in tonal description 55-82 {SAGART, Laurent}. Glottalised tones in China and South-East Asia 83-93 {BALLARD, W.L.}. Progress in tone sandhi analysis 95-108 {OKELL, John A.}. Notes on tone alternation in Maru verbs 109-114 {MAZAUDON, Martine and MICHAILOVSKY, Boyd}. Lost syllables and tonal contour in Dzongkha 115-136 {BODMAN, Nicholas C.}. Some remarks on Lepcha vowels 137-141 {BRADLEY, David}. Nasality as a prosody in Loloish 143-155 III. MORPHOLOGY {VAN DRIEM, George L.}. Reflexes of the Tibeto-Burman *-t directive suffix in Dumi Rai 157-167 {DILLER, Anthony V.N. and JUNTANAMALAGA, Preecha}. Deictic derivation in Thai 169-196 {CAUGHLEY, Ross C.}. Chepang: a Sino-Tibetan language with a duodecimal numeral base? 197-199 {TOBA, Sueyoshi}. The pronominal affixation system in Khaling 201-204 IV. CLASSIFICATION OF TIBETO-BURMAN LANGUAGES {MARRISON, Geoffrey E.}. The Adi-Dafla languages of North-east India: a sketch 205-222 {NISHIDA, Tatsuo}. On the mTsho-sna Monpa language in China 223-236 {MORSE, Stephen A.}. Five Rawang dialects compared plus more 237-250 {THURGOOD, Graham}. The subgrouping of Jino 251-258 V. LEXICON AND ORTHOGRAPHY {BENEDICT, Paul K.}. Sino-Tibetan snot/nose 259-263 {MATISOFF, James A.}. A new Sino-Tibetan root *d-yu-k 'belong/trust/depend/accept/take' and a note of caution to megaloreconstructionists 265-269 {SIMON, Ivan M.}. Loan-words in Khasi: their pronunciation and orthography 271-282 {TERWIEL, Barend J.}. Reading a dead language: Tai-Ahom and the dictionaries 283-296 {MICHAILOVSKY, Boyd}. Notes on Dzongkha orthography 297-301%BACK 303BIBLIOGRAPHY 303-330
Involutivity of integrals for sine-Gordon, modified KdV and potential KdV maps
Creators: name: Tran, Dinh T.
name: van der Kamp, P. H.
name: Quispel, G. R. W.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: Closed form expressions in terms of multi-sums of products have been given in \cite{Tranclosedform, KRQ} of integrals of sine-Gordon, modified Korteweg-de Vries and potential Korteweg-de Vries maps obtained as so-called $(p,-1)$-traveling wave reductions of the corresponding partial difference equations. We prove the involutivity of these integrals with respect to recently found symplectic structures for those maps. The proof is based on explicit formulae for the Poisson brackets between multi-sums of products.
description: 24 pages
Hidden order pseudogap in URu$_2$Si$_2$
Creators: name: Haraldsen, J. T.
name: Dubi, Y.
name: Curro, N. J.
name: Balatsky, A. V.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Through an analysis and modeling of data from various experimental techniques, we present clear evidence for the presence of a hidden order pseudogap in \U in the temperature range between 25 K and 17.5 K. Considering fluctuations of the hidden order energy gap at the transition as the origin of the pseudogap, we evaluate the effects that gap fluctuations would produce on observables like tunneling conductance, neutron scattering and nuclear resonance, and relate them to the experimental findings. We show that the transition into hidden order phase is likely second order and is preceded by the onset of non-coherent hidden order fluctuations.
description: 4 pages, 4 figures, Submitted for review
title: Geschichte der Nachrichtendienste / Intelligence History
Creators: name: Bergien, Rüdiger
Publisher: name: ZZF - Centre for Contemporary History: Docupedia
Year: 2021

description: Geheimdienste sind aus der Perspektive der Nachrichtendienstgeschichte / Intelligence History nicht mehr in erster Linie im Zwielicht wirkende Agentenzentralen, die „tote Briefkästen“ betrieben und Geheimtinte entwickelten. Sie sind außenpolitische Akteure und Produzenten von Wissen für Entscheidungsträger*innen. Rüdiger Bergien entwickelt in seinem Beitrag eine Definition dieses Forschungsfelds. Er zeichnet nach, wie sich die wissenschaftliche Beschäftigung mit Nachrichtendiensten seit dem Zweiten Weltkrieg entwickelt hat, wobei die Frage im Mittelpunkt steht, wie zu unterschiedlichen Zeiten überhaupt Einblicke in die Blackbox Nachrichtendienst gewonnen werden konnten. Schließlich stellt er die Schwerpunkte der bisherigen Forschung vor und benennt Desiderate.
Identifying the conditions for international atrocity crimes trials for former African heads of state
Creators: name: Ryan, Kennedy Laura
Publisher: name: University of British Columbia
Year: 2022

description: The 2010s marked a normative crisis between African state cooperation and international criminal law. Tensions between many African Union (AU) leaders and the International Criminal Court (ICC) have undermined the path forward for trying former African Presidents accused of atrocity crimes. By asking why former African heads of state are put on trial for atrocity crimes, I attempt to empirically ascertain the political conditions for a trial and contextualize the answer within the normative crisis. Using qualitative methods such as process tracing, I find that incoming African democratic regimes support trials based on a domestic political calculation of the costs and benefits of cooperating with international justice institutions. I argue that when viable new regimes can benefit strategically by removing the ex-leader as a political adversary and can simultaneously garner international praise and support for a trial, they instrumentalize international justice to further their political goals. While other theories explain the existence of trials through the internalization of anti-impunity and human rights norms, I argue that a rational calculus best explains the outcome of an international trial, whether at the ICC or in a hybrid forum. Finally, I argue that incoming governments can make these calculations in the state where the ex-leader committed past abuses or in a third-party state where he resides in exile.