cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Till death do us part: Exploring the Irish farmer-farm relationship in later life through the lens of ‘Insideness'
Creators: name: Conway, Shane Francis
name: McDonagh, John
name: Farrell, Maura
name: Kinsella, Anne
name: Conway, Shane Francis
name: McDonagh, John
name: Farrell, Maura
name: Kinsella, Anne
Publisher: name: Unknown
Year: 2018
Subjects: subject: Farm Management
subject: Labor and Human Capital
subject: family farming
subject: insideness
subject: succession
subject: retirement
subject: generational renewal
subject: rural sustainability

description: The senior generation’s unwillingness to relinquish managerial duties and retire is a globally recognized characteristic of intergenerational family farm transfer. This is despite the array of financial incentives put in place to stimulate and entice the process. Applying Rowles’ concept of ‘insideness’ as a theoretical framework, this paper brings into focus the suitability and appropriateness of previous and existing farm transfer policy strategies, by presenting an insightful, nuanced analysis of the deeply embedded attachment older farmers have with their farms, and how such a bond can stifle the necessary hand over of the farm business to the next generation. This research employs a multi-method triangulation design, consisting of a self-administered questionnaire and an Irish adaptation of the International FARMTRANSFERS Survey in conjunction with complimentary Problem-Centred Interviews, to generate a comprehensive insight into the intricate, multi-level farmer-farm relationship in later life. The overriding themes to emerge from the content analysis of the empirical research are farmer’s inherit desire to stay rooted in place in old age and also to maintain legitimate connectedness within the farming community by remaining active and productive on the farm. Additionally, there is a strong sense of nostalgia attributed to the farm, as it is found to represent a mosaic of the farmer’s achievements as well as being a landscape of memories. The paper concludes by suggesting that a greater focus on the farmer-farm relationship has the potential to finally unite farm transfer policy efforts with the mind-set of its targeted audience, after decades of disconnect.
Accelerating Generalized Linear Models with MLWeaving: A One-Size-Fits-All System for Any-precision Learning (Technical Report)
Creators: name: Wang, Zeke
name: Kara, Kaan
name: Zhang, Hantian
name: Alonso, Gustavo
name: Mutlu, Onur
name: Zhang, Ce
Publisher: name: arXiv
Year: 2019
Subjects: subject: Data Structures and Algorithms (cs.DS)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Learning from the data stored in a database is an important function increasingly available in relational engines. Methods using lower precision input data are of special interest given their overall higher efficiency but, in databases, these methods have a hidden cost: the quantization of the real value into a smaller number is an expensive step. To address the issue, in this paper we present MLWeaving, a data structure and hardware acceleration technique intended to speed up learning of generalized linear models in databases. ML-Weaving provides a compact, in-memory representation enabling the retrieval of data at any level of precision. MLWeaving also takes advantage of the increasing availability of FPGA-based accelerators to provide a highly efficient implementation of stochastic gradient descent. The solution adopted in MLWeaving is more efficient than existing designs in terms of space (since it can process any resolution on the same design) and resources (via the use of bit-serial multipliers). MLWeaving also enables the runtime tuning of precision, instead of a fixed precision level during the training. We illustrate this using a simple, dynamic precision schedule. Experimental results show MLWeaving achieves up to16 performance improvement over low-precision CPU implementations of first-order methods.
description: 18 pages
Amenable groups and measure concentration on spheres
Creators: name: Pestov, Vladimir
Publisher: name: arXiv
Year: 1998
Subjects: subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 46C05, 43A07, 54H20

description: It is proved that a discrete group $G$ is amenable if and only if for every unitary representation of $G$ in an infinite-dimensional Hilbert space $\cal H$ the maximal uniform compactification of the unit sphere $\s_{\cal H}$ has a $G$-fixed point, that is, the pair $(\s_{\cal H},G)$ has the concentration property in the sense of Milman. Consequently, the maximal $U({\cal H})$-equivariant compactification of the sphere in a Hilbert space $\cal H$ has no fixed points, which answers a 1987 question by Milman. This is a version as of November 19, 1998, incorporating some revisions.
description: 17 pages, LaTeX 2e
Group of boost and rotation transformations with two observer-independent scales
Creators: name: Bruno, Nicola Rossano
Publisher: name: arXiv
Year: 2002
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: I examine the structure of the deformed Lorentz transformations in one of the recently-proposed schemes with two observer-independent scales. I develop a technique for the analysis of general combinations of rotations and deformed boosts. In particular, I verify explicitly that the transformations form group.
description: revised version accepted for publication on Phys.Lett.B; one reference corrected, some physical comments added. 6 pages, RevTex4
The Archaeology of the Weald - A Survey and Review
Creators: name: Gardiner, Mark
Publisher: name: Archaeology Data Service
Year: 2021

description: Sussex Archaeological Collections, 128, 33-53
description: The identification of archaeological sites in the Weald poses considerable problems. The history of the study of archaeology in the Weald suggests that knowledge of sites has grown rather unevenly and the existing records may be unbalanced. A survey of the Weald in 1987-88 was undertaken to increase the number of sites recorded. Considerable numbers of earthworks were found to survive. Recent studies of aspects of Wealden archaeology and the results of the survey indicate the need for further work.
Path Integrals and Instantons in Quantum Gravity
Creators: name: Marolf, Donald
Publisher: name: arXiv
Year: 1996
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: While there does not at this time exist a complete canonical theory of full 3+1 quantum gravity, there does appear to be a satisfactory canonical quantization of minisuperspace models. The method requires no `choice of time variable' and preserves the systems' explicit reparametrization invariance. In the following study, this canonical formalism is used to derive a path integral for quantum minisuperspace models. As it comes from a well-defined canonical starting point, the measure and contours of integration are specified by this construction. The properties of the resulting path integral are analyzed, both exactly and in the semiclassical limit. Particular attention is paid to the role of the (unbounded) Euclidean action and Euclidean instantons are argued to contribute as $e^{-|S_E|/\hbar}$.
description: 23 pages, ReVTeX, minor changes: clarifying Comments and references added
Identifying and prioritizing opportunities for improving efficiency on the farm: holistic metrics and benchmarking with Data Envelopment Analysis
Creators: name: Soteriades, A.D.
name: Rowland, K.
name: Roberts, D.J.
name: Stott, A.W.
name: Soteriades, A.D.
name: Rowland, K.
name: Roberts, D.J.
name: Stott, A.W.
Publisher: name: Unknown
Year: 2018
Subjects: subject: Farm Management
subject: Livestock Production/Industries
subject: Productivity Analysis
subject: commercial dairy farms
subject: farm management
subject: efficiency
subject: benchmarking
subject: Data Envelopment Analysis

description: Efficiency benchmarking is a well-established way of measuring and improving farm performance. An increasingly popular efficiency benchmarking tool within agricultural research is Data Envelopment Analysis (DEA). However, the literature currently lacks sufficient demonstration of how DEA could be tuned to the needs of the farm advisor/extension officer, rather than of the researcher. Also, the literature is flooded with DEA terminology that may discourage the non-academic practitioner from adopting DEA. This paper aims at making DEA more accessible to farm consultants/extension officers by explaining the method step-by-step, visually and with minimal use of specialised terminology and mathematics. Then, DEA’s potential for identifying cost-reducing and profit-making opportunities for farmers is demonstrated with a series of examples drawn from commercial UK dairy farm data. Finally, three DEA methods for studying efficiency change and trends over time are also presented. Main challenges are discussed (e.g. data availability), as well as ideas for extending DEA’s applicability in the agricultural industry, such as the use of carbon footprints and other farm sustainability indicators in DEA analyses.
{\it Ab initio} approach to the lattice softening of an Al slab driven by collective electronic excitations after ultrashort laser pulse irradiation
Creators: name: Katow, Hiroki
name: Miyamoto, Yoshiyuki
Publisher: name: arXiv
Year: 2019
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Recent advances in ultrashort laser pulse techniques have opened up a wide variety of applications in both fundamental physics and industrial fields. In this work, $ab$ $initio$ molecular dynamics simulations based on time-dependent density functional theory revealed a steady deceleration of lattice distortion propagation in an aluminum slab with increasing laser pulse intensity. Analysis of the interatomic force revealed a significant reduction in the harmonic terms and non-monotonic growth of anharmonicity. This behavior was characterized by spatially non-uniform force screening by plasmons, which is missing from Born--Oppenheimer molecular dynamics, and is consistent with the current interpretation of laser-induced periodic structure patterning. This work provides a semi-quantitative criterion for modifying the phonon properties of non-equilibrium systems.
K-theoretic enumerative geometry and the Hilbert scheme of points on a surface
Creators: Arbesfeld, Noah
Publisher: name: Columbia University
Year: 2018
Subjects: subject: Mathematics
subject: FOS: Mathematics
subject: Geometry, Enumerative
subject: Hilbert schemes

description: Integrals of characteristic classes of tautological sheaves on the Hilbert scheme of points on a surface frequently arise in enumerative problems. We use the K-theoretic Donaldson-Thomas theory of certain toric Calabi-Yau threefolds to study K-theoretic variants of such expressions.
      We study limits of the K-theoretic Donaldson-Thomas partition function of a toric Calabi-Yau threefold under certain one-parameter subgroups called slopes, and formulate a condition under which two such limits coincide. We then explicitly compute the limits of components of the partition function under so-called preferred slopes, obtaining explicit combinatorial expressions related to the refined topological vertex of Iqbal, Kos\c{c}az and Vafa.
      Applying these results to specific Calabi-Yau threefolds, we deduce dualities satisfied by a generating function built from tautological bundles on the Hilbert scheme of points on $\C^2$. We then use this duality to study holomorphic Euler characteristics of exterior and symmetric powers of tautological bundles on the Hilbert scheme of points on a general surface.
Odds ratios from One piece of the matrilineal puzzle: the socioecology of maternal uncle investment
Creators: name: Starkweather, Katherine
name: Keith, Monica
Publisher: name: The Royal Society
Year: 2019
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: Ecology
subject: 60801 Animal Behaviour

description: Odds ratio posterior modes and 90% credible intervals represent 1,000 retained MCMC samples of each coefficient estimate, showing the change in investment odds per one unit increase in each predictor variable.
K_L-K_S mass difference from lattice QCD
Creators: Yu, Jianglei
Publisher: name: Columbia University
Year: 2014
Subjects: Particles (Nuclear physics)

description: The K_L-K_S mass difference is a promising quantity to reveal new phenomena which lie outside the standard model. A state-of-art perturbation theory calculation has be    en performed at next-to-next-to-leading order (NNLO) and a 40% error is quoted in the final result. We develop and demonstrate non-perturbative techniques needed to calculate the K_L-K_S mass difference, ΔM_K, in lattice QCD and carry out exploratory calculations. The calculations are performed on a 2+1 flavor, domain wall fermion, 16³ x 32 ensemble with a 421 Mev pion and a 24³ x 64 lattice ensemble with a 329 MeV pion. In the $16^3$ lattice calculation, we drop the double penguin diagrams and the disconnected diagrams. The short distance part of the mass difference in a 2+1 flavor calculation contains a quadratic divergence cut off by the lattice spacing. Here, this quadratic divergence is eliminated through the Glashow-Iliopoulos-Maiani (GIM) mechanism by introducing a quenched charm quark. We obtain a mass difference ΔM_K which ranges from 6.58(30) x 10⁻¹² MeV to 11.89(81) x 10⁻¹² MeV for kaon masses varying from 563 MeV to 839 MeV. On the 24³ lattice, we include all the diagrams and perform a full calculation. Our result is for a case of unphysical kinematics with pion, kaon and charmed quark masses of 330, 575 and 949 MeV respectively. We obtain ΔM_K=3.19(41)(96) x 10⁻¹² MeV, quite similar to the experimental value. Here the first error is statistical and the second is an estimate of the systematic discretization error. An interesting aspect of this calculation is the importance of the disconnected diagrams, a dramatic failure of the OZI rule.
Kaon to Two Pion decay from Lattice QCD and CP violation
Creators: Zhang, Daiqian
Publisher: name: Columbia University
Year: 2015
Subjects: Physics

description: We report a direct lattice calculation of the K to ππ (ΔI=1/2) decay amplitude A₀ on a 32³×64 ensemble, with 2+1 flavor Möbius Domain Wall Fermion, with a⁻¹=1.379(9) GeV.
      This is a complete and physical calculation: chiral symmetry breaking is controlled by the Möbius Domain Wall formalism; pion and kaon masses are simulated at their near-physical values, mκ≅490 MeV and mπ≅140 MeV. G-parity boundary conditions are used to realize correct kinematics for the final two-pion state and give E_{ππ(I=0)}≅498 MeV, while keeping isospin symmetry; all 10 ΔS=1 operators are considered, each of which involve the notorious disconnected diagrams. With this setup, we are able to resolve, for the first time, the physical decay amplitudes Re(A₀) and Im(A₀) from 0. The Re(A₀) amplitude agrees with its experimental value, The result for Im(A₀) is used, in combination with the lattice calculated decay amplitude A₂, to compute Re(ϵ'/ϵ), which evaluates to 1.38(5.08)×10⁻⁴ and agrees at the 2σ level with the experimental value 1.66(0.23)×10⁻³. This is a major step towards understanding and testing CP violation in the standard model.
      Several measurement techniques are used to increase computational efficiency. We use all-to-all propagators to construct finite sized mesons, which have a better overlap with the meson ground state and reducing statistical noise from the vacuum graphs. This also saves matrix-inversion overhead when constructing mesons with different momenta. The other technical improvements include the mixed-precision conjugate gradient algorithm, and optimized fast Fourier transformation. We also discuss the cross-checks on the use of G-parity boundary conditions, and estimate several important systematic errors.
ИСТОРИЯ УЗБЕКИСТАНА: ОТ ДРЕВНОСТИ ДО СОВРЕМЕННОСТИ
Creators: name: Кабилова, Гульнора
name: Игамбердиева, Дилбар
name: Курбонов, Эркин
Publisher: name: Zenodo
Year: 2024

description: Эта статья представляет собой обзор исторического развития Узбекистана от древних времен до современности. Проанализированы ключевые периоды в истории региона, включая эпоху Зороастризма, завоевание Александра Македонского, влияние исламской цивилизации, период туркменских династий и российское влияние в XIX - начале XX века. Особое внимание уделено периоду советского правления и формированию национальной идентичности в период независимости.
Monitoring indicators of sustainability at Highland Valley Copper, Logan Lake, B.C.
Creators: name: Gizikoff, Katherine G.
name: Jones, Carol Elizabeth, 1953-
name: Bloodgood, Mary Anne, 1960-
Publisher: name: The University of British Columbia
Year: 2009

description: Highland Valley Copper is a large open pit copper-molybdenum mine located in the southern interior of British Columbia. Since 1986, reclamation research conducted by C.E. Jones and Associates Ltd. at Highland Valley Copper has been designed to assess the performance of reclaimed sites by monitoring indicators of sustainability. These data are used to facilitate future reclamation planning and mine decommissioning. The reclamation research program includes monitoring activities to determine biomass production, species composition, and foliar nutrient status. This paper provides a summary of six years ' monitoring data recently compiled during the preparation of Highland Valley Copper's first decommissioning application for a waste rock dump.
Kaon to two pions decays from lattice QCD: ΔI=1/2 rule and CP violation
Creators: Liu, Qi
Publisher: name: Columbia University
Year: 2012
Subjects: Physics

description: We report a direct lattice calculation of the K to ππ decay matrix elements for both the ΔI = 1/2 and 3/2 amplitudes A0 and A2 on a 2+1 flavor, domain wall fermion, 163 × 32 × 16 lattice ensemble and a 243 × 64 × 16 lattice ensemble. This is a complete calculation in which all contractions for the required ten, four-quark operators are evaluated, including the disconnected graphs in which no quark line connects the initial kaon and final two-pion states. These lattice operators are nonperturbatively renormalized using the Rome-Southampton method and the quadratic divergences are studied and removed. This is an important but notoriously difficult calculation, requiring high statistics on a large volume. In this work we take a major step towards the computation of the physical K → ππ amplitudes by performing a complete calculation at unphysical kinematics with pions of mass 422MeV and 329MeV at rest in the kaon rest frame. With this simplification we are able to resolve Re(A0) from zero for the first time, with a 25% statistical error on the 163 lattice and 15% on the 243 lattice. The complex amplitude A2 is calculated with small statistical errors. We obtain the ΔI = 1/2 rule with an enhancement factor of 9.1(21) and 12.0(17) on these two ensembles. From the detailed analysis of the results we gain a deeper understanding of the origin of the ΔI = 1/2 rule. We also calculate the complex amplitude A0, a calculation central to understanding and testing the standard model of CP violation in the kaon system. The final result for the measure of direct CP violation, ε′, calculated at unphysical kinematics has an order of 100% statistical error, so this only serves as an order of magnitude check.
Model fit for direct maternal uncle investment from One piece of the matrilineal puzzle: the socioecology of maternal uncle investment
Creators: name: Starkweather, Katherine
name: Keith, Monica
Publisher: name: The Royal Society
Year: 2019
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: Ecology
subject: 60801 Animal Behaviour

description: R2 and DIC are reported for each screening cluster model (A-E) as well as the final direct investment model which included only the predictor variables retained from screening that showed clear, directional relationships with the outcome. Marginal R2 values were calculated for all 1,000 samples retained from each model's posterior distribution, and we report posterior modes and 90% credible interval of R2 distributions. DIC provides a comparative assessment of model fit (smaller values indicate better fit) that penalizes model complexity.
On the geometric simple connectivity of open manifolds
Creators: name: Funar, Louis
name: Gadgil, Siddhartha
Publisher: name: arXiv
Year: 2000
Subjects: subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 57R65, 57Q35, 57M35

description: One proves that there exists an obstruction to an open simply connected $n$-manifold of dimension $n\geq 5$ being geometrically simply connected. In particular there exist uncountably many simply connected $n$-manifolds which are not w.g.s.c. One proves that for $n\neq 4$ an $n$-manifold proper homotopy equivalent to a w.g.s.c. polyhedron is w.g.s.c. (for $n=4$ it is only end compressible). We analyze further the case $n=4$ and Poénaru's conjecture.
description: 48 pages, one eps figure, to appear IMRN
Kaon to two-pion decay and pion-pion scattering from lattice QCD
Creators: Wang, Tianle
Publisher: name: Columbia University
Year: 2021
Subjects: Physics
Kaons
Pions
Kaons--Decay
Kaons--Scattering
Fermions
Lattice theory
Bootstrap theory (Nuclear physics)

description: In this work, we present a lattice QCD calculation of two closely related quantities: 1). The 𝜋𝜋 scattering phase shift for both 𝑰=0 and 𝑰=2 channels at seven energies in total, and 2). The 𝜟𝑰=1/2, 𝛫 → 𝜋𝜋 decay amplitude 𝐴₀ and 𝜖′, the measure of direct CP violation. These two results improve our earlier calculation presented in 2015 [1]. The calculation is performed on an ensemble of 32³ × 64 lattice with 𝛼⁻¹=1.3784(68)GeV. This is a physical calculation, where the chiral symmetry breaking is controlled by the 2+1 flavor Möbius Domain Wall Fermion, and we take the physical value for both kaon and pion. The G-parity boundary condition is used and carefully tuned so that the ground state energy of the 𝜋𝜋₁₌₀ state matches the kaon mass. Three sets of 𝜋𝜋 interpolating operators are used, including a scalar bilinear ``σ" operator and paired single-pion bilinear operators with the constituent pions carrying various relative momenta. Several techniques, including correlated fits and a bootstrap determination of the 𝑝-value have been used, and a detailed analysis of all major systematic error is performed. The 𝜋𝜋 scattering phase shift results are presented in Fig. 5.10 and Tab. 5.12. For the Kaon decay amplitude, we finally get Re(𝐴₀) = 2.99(0.32)(0.59) × 10⁻⁷GeV, which is consistent with the experimental value of Re(𝐴₀) = 3.3201(18) × 10⁻⁷GeV, and Im(𝐴₀) = -6.98(0.62)(1.44) × 10⁻¹¹GeV. Combined with our earlier lattice calculation of 𝐴₂ [2], we obtained Re(𝜖′/𝜖) = 21.7(2.6)(6.2)(5.0) × 10⁻⁴, which agrees well with the experimental value of Re(𝜖′/𝜖) = 16.6(2.3) × 10⁻⁴, and Re(𝐴₀)/Re(𝐴₂) = 19.9(2.3)(4.4), consistent with the experimental value of Re(𝐴₀)/Re(𝐴₂) = 22.45(6), known as the 𝜟𝑰=1/2 rule.
The number of rhombus tilings of a symmetric hexagon which contain a fixed rhombus on the symmetry axis, II
Creators: name: Fulmek, Markus
name: Krattenthaler, Christian
Publisher: name: arXiv
Year: 1999
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05A15 05A16 05A17 05A19 05B45 11B68 30B70 33C20 33C45 52C20

description: We compute the number of rhombus tilings of a hexagon with side lengths N,M,N,N,M,N, with N and M having the same parity, which contain a particular rhombus next to the center of the hexagon. The special case N=M of one of our results solves a problem posed by Propp. In the proofs, Hankel determinants featuring Bernoulli numbers play an important role.
description: 42 pages, AmS-LaTeX, uses TeXDraw
Kasia the Melodist. And the Making of a Byzantine Hymnographer
Creators: Zugravu, Gheorghita
Publisher: name: Columbia University
Year: 2013
Subjects: Religion
History

description: This dissertation is about the ninth-century Byzantine nun Kassia who is perhaps the most famous hymnographer of her time. Reconstructions of her character and work have largely been done in specialized categories, thus leading to many isolated and idiosyncratic readings. In contrast, this dissertation shall use a mosaic methodology, examining the various historical and theological developments leading up to ninth-century Byzantium, and thus giving a more developed context in which to examine Kassia. This new approach will allow for a stronger and more multi-layered reconstruction of the only female hymnographer whose work has made it into the liturgical life of the Byzantine church. The historical reconstruction of ninth-century Byzantium will detail the social, political, economical, educational, and cultural milieus that all intersected and interpenetrated one another in discourse. In particular, it shall focus upon the figure Theodore the Studite and his monastery of Stoudion whose intellectual renaissance greatly affected the culture of ninth-century Byzantium. It shall also give an account of the iconoclastic controversy that shook the state at its devotional and political core. Alongside the above, this study will detail the theology that underpins liturgical-musical development, thus creating an amalgam that could aptly be called ‘theomusicology.’ This idea has largely been ignored when examining Kassia and will provide a new avenue of historical reconstruction. Utilizing these various frames, this dissertation shall undertake an exegesis of Kassia’s liturgical and non-liturgical works, showing how they influenced both the construction and content of her writings. In particular, it shall examine her gnomic verses and maxims, her work in the Menaia, or the book that outlines the weekly services for each month, and the Triodion, the liturgical book used by Byzantines for their religious season known as Lent. Her sticheron idiomelon, ‘The Fallen Woman,’ shall receive special attention, as it is her most known work. This study will then draw various conclusions based upon its findings, detailing a far more developed Kassia than has been done previously in other studies. By explaining her theomusicological thought along with historical influences, this study ultimately will show how Kassia used music as the vehicle to carry her thematic points, creating an ecstatic emotional experience in her hymns.
Skip prediction using boosting trees based on acoustic features of tracks in sessions
Creators: name: Ferraro, Andrés
name: Bogdanov, Dmitry
name: Serra, Xavier
Publisher: name: arXiv
Year: 2019
Subjects: subject: Information Retrieval (cs.IR)
subject: FOS: Computer and information sciences

description: The Spotify Sequential Skip Prediction Challenge focuses on predicting if a track in a session will be skipped by the user or not. In this paper, we describe our approach to this problem and the final system that was submitted to the challenge by our team from the Music Technology Group (MTG) under the name "aferraro". This system consists in combining the predictions of multiple boosting trees models trained with features extracted from the sessions and the tracks. The proposed approach achieves good overall performance (MAA of 0.554), with our model ranked 14th out of more than 600 submissions in the final leaderboard.
Keeping Time in Place: Modernism, Political Aesthetics, and the Transformation of Chronotopes in Late Modernity
Creators: Radisoglou, Alexis
Publisher: name: Columbia University
Year: 2015
Subjects: German literature
Comparative literature
Aesthetics

description: In this dissertation, I identify a conspicuous shift in the formal articulation of time and space in modernist literature and film of the late 20th and early 21st centuries. This “transformation of chronotopes,” I argue, has important historical, political, and aesthetic implications that have to do with a critical negotiation of our – and art’s – being-in-history in late modernity. In case studies on the work of Theo Angelopoulos, Heiner Müller and Alexander Kluge, I demonstrate that literary and cinematic time-space articulations function as both formal sedimentations of and antagonistic aesthetic responses to a transformed understanding of time, space and the historical process in the wake of the world-historical transformations around and after 1989 as well as in an age of globalization. All three authors are centrally concerned with the precarious status of modernity and futurity today – with the question, that is, of what happens to the constitutively modern promise about an “open future” amid a wide-spread exhaustion of the historical imagination in European societies, amid hyper-acceleration in the fields of technology and the economy, and amid manifold processes of systemic autonomization that undermine concepts of human praxis and self-determination. Interrogating the conditions of possibility for a contemporary political aesthetic – can there be a conjunction of art and politics today? – Angelopoulos, Müller and Kluge are informed by and draw on different forms of modernist political aesthetics of the early 20th century in their engagement with the present and thus also pose the question about the continued relevance, the legacy and timeliness of political modernism today.
Keyner iz nit fargesn: Soviet Yiddish Antifascism and the Holocaust
Creators: Schulz, Miriam
Publisher: name: Columbia University
Year: 2021
Subjects: Holocaust, Jewish (1939-1945)
Anti-Nazi movement
Ethnology
Yiddish language
Jews--Identity

description: This study provides a Benjaminian reading of Soviet Yiddish cultural and intellectual history from the 1920s to the 1980s and retrieves the legacy of Soviet Yiddish antifascist thought and activism as a constitutive element throughout its existence. The interconnected ideas of antifascism, anti-capitalism, anti-racism, anti-imperialism and anti-colonialism are introduced as important reading keys for Soviet Yiddish culture, for its ideas of ‘Jewishness’ and for its varied responses to the Holocaust and its memory – as represented in works of literature, film, theater and monuments. In attempting to ‘decolonize’ this antifascism and Holocaust memory in dialogue with postcolonial studies and critical race theory, this study makes sense of the Soviet and Yiddish cultural ecosystems with the help of Homi Bhabha’s notion of ‘cultural hybridity’ and posits not persecution and antisemitism as the ‘engine’ of Soviet Yiddish history – but its very intellectual engagement with, and activism against, those two forces in ‘rhizomatic’ fashion. As such, it contributes to the renaissance in research into antifascism in the longue durée and its links to communist internationalism. Besides illuminating a counter-memory of the Holocaust, this story about Soviet Yiddish activism and brave memory-work also uncovers the Cold-War-generated stakes of our postwar conception of ‘Jewishness.’ These conceptions have both needed Soviet Yidishkayt as their ‘other,’ and simultaneously silenced and forgotten it. Ultimately, this study hopes to reopen this archive of thought and memory as a repository of tools to be used in the current moment of rising transnational fascism as well.
Trace Formula for a System of Particles with Elliptic Potential
Creators: name: Vaninsky, K. L.
Publisher: name: arXiv
Year: 1997
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: We consider classical particles on the line with the Weierstrass $\wp$ function as potential. This system parameterizes special solutions of the KP equation. We derive the trace formula which relates the Hamiltonian of the particle system to the residues of some Abelian differential (meromorphic one-form) on the spectral curve. Such formula is important for the construction action-angle variables and study invariant Gibbs' states.
description: corrected version
parasweep: A template-based utility for generating, dispatching, and post-processing of parameter sweeps
Creators: name: Bach, Eviatar
Publisher: name: arXiv
Year: 2019
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: FOS: Computer and information sciences

description: We introduce parasweep, a free and open-source utility for facilitating parallel parameter sweeps with computational models. Instead of requiring parameters to be passed by command-line, which can be error-prone and time-consuming, parasweep leverages the model's existing configuration files using a template system, requiring minimal code changes. parasweep supports a variety different sweep types, generating parameter sets accordingly and dispatching a parallel job for each set, with support for local execution as well as common high-performance computing (HPC) job schedulers. Post-processing is facilitated by providing a mapping between the parameter sets and the simulations. We demonstrate the usage of parasweep with an example.
description: Final published version
Higher Dimensional Wormhole Geometries with Compact Dimensions
Creators: name: DeBenedictis, A.
name: Das, A.
Publisher: name: arXiv
Year: 2002
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: This paper studies wormhole solutions to Einstein gravity with an arbitrary number of time dependent compact dimensions and a matter-vacuum boundary. A new gauge is utilized which is particularly suited for studies of the wormhole throat. The solutions possess arbitrary functions which allow for the description of infinitely many wormhole systems of this type and, at the stellar boundary, the matter field is smoothly joined to vacuum. It turns out that the classical vacuum structure differs considerably from the four dimensional theory and is therefore studied in detail. The presence of the vacuum-matter boundary and extra dimensions places interesting restrictions on the wormhole. For example, in the static case, the radial size of a weak energy condition (WEC) respecting throat is restricted by the extra dimensions. There is a critical dimension, D=5, where this restriction is eliminated. In the time dependent case, one \emph{cannot} respect the WEC at the throat as the time dependence actually tends the solution towards WEC violation. This differs considerably from the static case and the four dimensional case.
description: 28 pages, 5 figures (quality reduced to reduce file size). Update includes added references and more detail regarding role extra dimensions play in wormhole analysis. Accepted for publication in Nuclear Phys. B
title: Braunschweigisches Adreßbuch für das Jahr 1822
Creators: name: :None
Publisher: name: Meyer
Year: 1822
Subjects: subject: Brunsvicensien der Universitätsbibliothek Braunschweig
subject: Stadt Braunschweig
subject: 902

description: Braunschweigisches Adreßbuch, vol. 1822
Quantum Black Hole Model and Hawking's Radiation
Creators: name: Berezin, V. A.
Publisher: name: arXiv
Year: 1996
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The black hole model with a self-gravitating charged spherical symmetric dust thin shell as a source is considered. The Schroedinger-type equation for such a model is derived. This equation appeared to be a finite differences equation. A theory of such an equation is developed and general solution is found and investigated in details. The discrete spectrum of the bound state energy levels is obtained. All the eigenvalues appeared to be infinitely degenerate. The ground state wave functions are evaluated explicitly. The quantum black hole states are selected and investigated. It is shown that the obtained black hole mass spectrum is compatible with the existence of Hawking's radiation in the limit of low temperatures both for large and nearly extreme Reissner-Nordstrom black holes. The above mentioned infinite degeneracy of the mass (energy) eigenvalues may appeared helpful in resolving the well known information paradox in the black hole physics.
description: LaTeX file
Construction of commuting difference operators for multiplicity free spaces
Creators: name: Knop, Friedrich
Publisher: name: arXiv
Year: 2000
Subjects: subject: Representation Theory (math.RT)
subject: Combinatorics (math.CO)
subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics
subject: 05E05 20G05 22E46 33C52 39A70 43A90

description: We study root systems equipped with a basis of dominant weights such that certain axioms hold. This formalism allows to define a linear basis P of the space of Weyl group invariant polynomials. This basis is actually a family depending on at least one parameter. Our main result is the construction of difference operators which are simultaneously diagonalized by P. From this, Pieri type rules are derived. This generalizes results for shifted Jack polynomials. Even though the approach is purely combinatorial, the main motivation comes from multiplicity free actions of reductive groups on vector spaces. Then the algebra of invariant differential operators has a distinguished basis, the Capelli operators, which gives rise to a basis P as above. The paper ends with a comprehensive table detailing the combinatorial structure of multiplicity free actions.
description: 28 pages, plain TeX, minor changes in the exposition, slightly improved table
Kernel Approximation Methods for Speech Recognition
Creators: May, Avner
Publisher: name: Columbia University
Year: 2018
Subjects: Computer science
Artificial intelligence
Automatic speech recognition
Kernel functions

description: Over the past five years or so, deep learning methods have dramatically improved the state of the art performance in a variety of domains, including speech recognition, computer vision, and natural language processing. Importantly, however, they suffer from a number of drawbacks:
      1. Training these models is a non-convex optimization problem, and thus it is difficult to guarantee that a trained model minimizes the desired loss function.
      2. These models are difficult to interpret. In particular, it is difficult to explain, for a given model, why the computations it performs make accurate predictions.
      In contrast, kernel methods are straightforward to interpret, and training them is a convex optimization problem. Unfortunately, solving these optimization problems exactly is typically prohibitively expensive, though one can use approximation methods to circumvent this problem. In this thesis, we explore to what extent kernel approximation methods can compete with deep learning, in the context of large-scale prediction tasks. Our contributions are as follows:
      1. We perform the most extensive set of experiments to date using kernel approximation methods in the context of large-scale speech recognition tasks, and compare performance with deep neural networks.
      2. We propose a feature selection algorithm which significantly improves the performance of the kernel models, making their performance competitive with fully-connected feedforward neural networks.
      3. We perform an in-depth comparison between two leading kernel approximation strategies — random Fourier features [Rahimi and Recht, 2007] and the Nyström method [Williams and Seeger, 2001] — showing that although the Nyström method is better at approximating the kernel, it performs worse than random Fourier features when used for learning.
      We believe this work opens the door for future research to continue to push the boundary of what is possible with kernel methods. This research direction will also shed light on the question of when, if ever, deep models are needed for attaining strong performance.
Statistical Mechanics of Elastica on Plane as a Model of Supercoiled DNA-Origin of the MKdV hierarchy-
Creators: name: Matsutani, Shigeki
Publisher: name: arXiv
Year: 1997
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: In this article, I have investigated statistical mechanics of a non-stretched elastica in two dimensional space using path integral method. In the calculation, the MKdV hierarchy naturally appeared as the equations including the temperature fluctuation.I have classified the moduli of the closed elastica in heat bath and summed the Boltzmann weight with the thermalfluctuation over the moduli. Due to the bilinearity of the energy functional,I have obtained its exact partition function.By investigation of the system,I conjectured that an expectation value at a critical point of this system obeys the Painlevé equation of the first kind and its related equations extended by the KdV hierarchy.Furthermore I also commented onthe relation between the MKdV hierarchy and BRS transformationin this system.
description: AMS-Tex Use
Quasinormal modes in kink excitations and kink-antikink interactions: a toy model
Creators: name: Campos, João G. F.
name: Mohammadi, Azadeh
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: We study excitations and collisions of kinks in a scalar field theory where the potential has two minima with $Z_2$ symmetry. The field potential is designed to create a square well potential in the stability equation of the kink excitations. The stability equation is analogous to the Schrödinger equation, and therefore we use quantum mechanics techniques to study the system. We modify the square well potential continuously, which allows the excitation to tunnel and consequently turns the normal modes of the kink into quasinormal modes. We study the effect of this transition, leading to energy leak, on isolated kink excitations. Finally, we investigate kink-antikink collisions and the resulting scaling and fractal structure of the resonance windows considering both normal and quasinormal modes and compare the results.
description: 23 pages, 11 figures
On the Intrinsic Parity of Black Holes
Creators: name: Hsu, Stephen D. H.
Publisher: name: arXiv
Year: 2002
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We investigate the intrinsic parity of black holes. It appears that discrete symmetries require the black hole Hilbert space to be larger than suggested by the usual quantum numbers M (mass), Q (charge) and J (angular momentum). Recent results on black hole production in trans-Planckian scattering lead to gravitational effects which do not decouple from low-energy physics. Dispersion relations incorporating these effects imply that the semi-classical black hole spectrum is similar in parity even and odd channels. This result can be generalized to other discrete and continuous symmetries.
description: 10 pages, Latex. Slightly revised version to appear in Physics Letters B
Supplementary information of meta-analyses from Unravelling the gender productivity gap in science: a meta-analytical review
Creators: name: Astegiano, Julia
name: Sebastián-González, Esther
name: Castanho, Camila De Toledo
Publisher: name: The Royal Society
Year: 2019
Subjects: subject: 179999 Psychology and Cognitive Sciences not elsewhere classified
subject: FOS: Psychology

description: Eligibility criteria, sensitivity and heterogeneity analyses related to the meta-analyses presented in the main text
Keeping up with the Times: How are Teacher Preparation Programs Preparing Aspiring Teachers to Teach Mathematics Under the New Standards of Today?
Creators: Sudarsanan, Shalini Thirumulpad
Publisher: name: Columbia University
Year: 2015
Subjects: Mathematics--Study and teaching
Mathematics--Study and teaching (Elementary)
Mathematics teachers
Mathematics teachers--Training of

description: The purpose of this study is to determine how well traditional elementary preparation programs and alternative elementary certification programs are perceived by teacher candidates, to prepare them to teach mathematics to the standards required today.  Using a qualitative design, this study examines how various ranked elementary teacher preparation programs and alternative certification programs are preparing elementary teachers to teach the mathematics envisioned in the CCSSM.
      	Participants in this study all attended an undergraduate elementary teacher preparation program or an alternate route certification program. To paint a holistic picture of elementary teacher preparation in mathematics, each undergraduate elementary teacher preparation programs was ranked in a different level in the NCTQ Teacher Preparation Review. Qualitative surveys and interviews were used to gather data on participants' perceptions of their preparation in mathematics.
      	Twenty-five participants agreed to take part in this study. Participants filled out a two-part survey. The first part of the survey asked background questions on their coursework and field experiences in mathematics along with a survey on their beliefs about their ability to teach mathematics. The second part was a pedagogy survey that asked participants how they would teach particular mathematics concepts that now require a conceptual understanding in the CCSSM. Seven participants agreed to participate in a follow up interview to further investigate their experiences in mathematics preparation in their teacher education programs.
      	The data showed that there is little consistency in the mathematics education of elementary teachers within a teacher preparation program and across different teacher preparation programs.  There is little standardization in the coursework for participants from different preparation programs and participants within the same program. The interviews revealed that the degree to which participants were able to teach mathematics in their field experiences also varied within and across teacher preparation programs. Furthermore, the interviews also unveiled that the CCSSM were also studied and utilized in different capacities within and across institutions.  Lastly, the data from the surveys disclosed that the majority of participants feel that they have the ability to be effective teachers of mathematics yet the majority of participants teach mathematics for a procedural understanding.
The reclamation process at Bullmoose Operating Corporation
Creators: name: Lacarte, Michael W.
Publisher: name: The University of British Columbia
Year: 2009

description: The ex-pit mined rock piles at Bullmoose were designed as 50 m end dump lifts with 30 m wide safety berms. These lifts are bounded by a steep slope declining to West Bullmoose Creek. A method was developed that would place soil on the slopes of the mined rock piles to a depth of 0.5 m, create sustainable growth, promote slope stability, and produce animal habitat for end land use that was equivalent to or better than what was here before the mine. This method had to be compatible with pit operations to allow mined rock piles to be reclaimed as they reached their final limits to minimize costs and promote progressive reclamation. Once in place, the soil and vegetation has to be assessed to demonstrate that end land use objectives are attainable. Plygons are established and monitored for stability, sustainable growth and native encroachment.