cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Letter from Frederick P. Keppel to Gunnar Myrdal, September 15, 1937
Creators: name: Keppel, Frederick P. (Frederick Paul), 1875-1943
Publisher: name: Columbia University
Year: 2019
Subjects: Race relations
African Americans--Social conditions
Endowments

description: In this letter, Frederick P. Keppel responds to Gunnar Myrdal's August 30th letter declining the Carnegie Corporation's offer to direct its planned comprehensive study on African American social conditions.
The 3-3-1 model with S_4 flavor symmetry
Creators: name: Dong, P. V.
name: Long, H. N.
name: Soa, D. V.
name: Vien, V. V.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We construct a 3-3-1 model based on family symmetry S_4 responsible for the neutrino and quark masses. The tribimaximal neutrino mixing and the diagonal quark mixing have been obtained. The new lepton charge \mathcal{L} related to the ordinary lepton charge L and a SU(3) charge by L=2/\sqrt{3} T_8+\mathcal{L} and the lepton parity P_l=(-)^L known as a residual symmetry of L have been introduced which provide insights in this kind of model. The expected vacuum alignments resulting in potential minimization can origin from appropriate violation terms of S_4 and \mathcal{L}. The smallness of seesaw contributions can be explained from the existence of such terms too. If P_l is not broken by the vacuum values of the scalar fields, there is no mixing between the exotic and the ordinary quarks at the tree level.
description: 20 pages, revised version
Convergence rate for predictive recursion estimation of finite mixtures
Creators: name: Martin, Ryan
Publisher: name: arXiv
Year: 2011
Subjects: subject: Statistics Theory (math.ST)
subject: Methodology (stat.ME)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: Predictive recursion (PR) is a fast stochastic algorithm for nonparametric estimation of mixing distributions in mixture models. It is known that the PR estimates of both the mixing and mixture densities are consistent under fairly mild conditions, but currently very little is known about the rate of convergence. Here I first investigate asymptotic convergence properties of the PR estimate under model misspecification in the special case of finite mixtures with known support. Tools from stochastic approximation theory are used to prove that the PR estimates converge, to the best Kullback--Leibler approximation, at a nearly root-$n$ rate. When the support is unknown, PR can be used to construct an objective function which, when optimized, yields an estimate the support. I apply the known-support results to derive a rate of convergence for this modified PR estimate in the unknown support case, which compares favorably to known optimal rates.
description: 12 pages, 1 figure
Letter from Gunnar Myrdal to Frederick P. Keppel, August 30, 1937
Creators: name: Myrdal, Gunnar, 1898-1987
Publisher: name: Columbia University
Year: 2019
Subjects: Race relations
African Americans--Social conditions
Endowments

description: In this letter, Gunnar Myrdal responds to Frederick P. Keppel's August 12th invitation to head the Carnegie Corporation's comprehensive study on African American social conditions, stating that he unfortunately cannot accept a two year position due to his commitments as a member of the Swedish Royal Population Commission.
Supersymmetry Breaking Scalar Masses and Trilinear Soft Terms From High-Dimensional Operators in E_6 SUSY GUT
Creators: name: Wang, Fei
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In the GmSUGRA scenario with the high-dimensional operators containing the GUT Higgs fields, we systematically studied the supersymmetry breaking scalar masses, SM fermion Yukawa coupling terms, and trilinear soft terms in the E_6 SUSY GUT model where the gauge symmetry is broken down to the SO(10)\tm U(1) gauge symmetry, SU(3)_C\times SU(3)_L \times SU(3)_R gauge symmetry, SU(6)\times SU(2)_a (a={\rm L,R,X}) gauge symmetry, flipped SU(5) gauge symmetry etc. In addition, we considered the scalar and gaugino mass relations, which can be preserved from the GUT scale to the electroweak scale under one-loop RGE running, in the SU(3)_C\times SU(3)_L \times SU(3)_R model arising from the E_6 model. With such relations, we may distinguish the mSUGRA and GmSUGRA scenarios if we can measure the supersymmetric particle spectrum at the LHC and ILC.
description: Nucl.Phys.B style, 41 pages, no figure
Group Class Photo
Creators: name: Kelsey, Carleton
name: Amagansett Historical Association
Publisher: name: Unknown
Year: 0
Subjects: Photographs
Girls
Women
Children
Boys
Schools

description: This image shows a group of young school children in front of a white building. There are 18 girls and 17 boys, as well as one female teacher. This photograph was either taken or collected by Amagansett historian and librarian Carleton Kelsey.
description: This photograph is part of the collection of the Carleton Kelsey Collection of the Amagansett Historical Association. Kelsey was a local historian and librarian who collected photographs from others to add to the many photographs he took of the community himself.
Perturbed State Space Feature Encoders for Optical Flow with Event Cameras
Creators: name: Raju, Gokul Raju Govinda
name: Zubić, Nikola
name: Cannici, Marco
name: Scaramuzza, Davide
Publisher: name: arXiv
Year: 2025
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: With their motion-responsive nature, event-based cameras offer significant advantages over traditional cameras for optical flow estimation. While deep learning has improved upon traditional methods, current neural networks adopted for event-based optical flow still face temporal and spatial reasoning limitations. We propose Perturbed State Space Feature Encoders (P-SSE) for multi-frame optical flow with event cameras to address these challenges. P-SSE adaptively processes spatiotemporal features with a large receptive field akin to Transformer-based methods, while maintaining the linear computational complexity characteristic of SSMs. However, the key innovation that enables the state-of-the-art performance of our model lies in our perturbation technique applied to the state dynamics matrix governing the SSM system. This approach significantly improves the stability and performance of our model. We integrate P-SSE into a framework that leverages bi-directional flows and recurrent connections, expanding the temporal context of flow prediction. Evaluations on DSEC-Flow and MVSEC datasets showcase P-SSE's superiority, with 8.48% and 11.86% improvements in EPE performance, respectively.
description: 10 pages, 4 figures, 4 tables. Equal contribution by Gokul Raju Govinda Raju and Nikola Zubi\'c
Group of School Portraits
Creators: name: Kelsey, Carleton
name: Amagansett Historical Association
Publisher: name: Unknown
Year: 0
Subjects: Photographs
Girls
Boys
Children
Portraits
Portrait photographs

description: This image shows 34 children in individual seated portraits. There are 18 girls and 16 boys. This photograph was either taken or collected by Amagansett historian and librarian Carleton Kelsey.
description: This photograph is part of the collection of the Carleton Kelsey Collection of the Amagansett Historical Association. Kelsey was a local historian and librarian who collected photographs from others to add to the many photographs he took of the community himself.
Letter from Gunnar Myrdal to Frederick P. Keppel, October 7, 1937
Creators: name: Myrdal, Gunnar, 1898-1987
Publisher: name: Columbia University
Year: 2019
Subjects: Race relations
African Americans--Social conditions
Endowments

description: In this letter, Gunnar Myrdal formally accepts the Carnegie Corporation's offer to direct its comprehensive study on African American social conditions, which he previously declined, and discusses of the logistics and conditions of his beginning the position.
CRIME PREVENTION THROUGH ENVIRONMENTAL DESIGN (CPTED): A BRIEF REVIEW
Creators: name: De Silva, Banuka N.
Publisher: name: figshare
Year: 2021
Subjects: subject: 160201 Causes and Prevention of Crime
subject: FOS: Law

description: CPTED (pronounced sep-ted) proposes that the design of buildings, landscaping, and outdoor environments can encourage or discourage crime. To reduce crime and crime fear, CPTED reduces criminal opportunity and promotes positive social interaction among users. The Prime intention of the short article is to identify the CPTED concept and its usage for later research. The related duration of the previous studies were 2015 to 2020; 10 articles were considered as the secondary resources.
Revisiting the constraints on the Supersymmetric Higgs sector at the Tevatron
Creators: name: Baglio, Julien
name: Djouadi, Abdelhak
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We analyze the production of the neutral Higgs particles of the Minimal Supersymmetric extension of the Standard Model at the Fermilab Tevatron collider. We consider the two main production and detection channels: gluon--gluon and bottom quark fusion leading to Higgs bosons which subsequently decay into tau leptons, $gg, b\bar b \to {\rm Higgs} \to τ^+τ^-$. We update the production cross sections and the decay branching ratios and obtain production rates that are significantly smaller at high masses than the ones used by the CDF and D0 experiments in their search. We then evaluate the various theoretical uncertainties that affect these rates, uncertainties that have not been been considered in the experimental analyses and which turn out to be rather large. Including these two effects will significantly loosen the constraints obtained on the supersymmetric Higgs sector at the Tevatron.
description: 10 pages, 2 tables, 3 figures. Version to appear in Physics Letter B
Outline from Gunnar Myrdal for Carnegie Corporation response letter
Creators: name: Myrdal, Gunnar, 1898-1987
Publisher: name: Columbia University
Year: 2019
Subjects: Race relations
African Americans--Social conditions
Endowments

description: Outline enclosed by Gunnar Myrdal along with his October 7, 1937 letter accepting the Carnegie Corporation's offer to direct its comprehensive sociological study on African American life, containing questions regarding Myrdal's conditions of acceptance that he would like the Carnegie Corporation to answer.
Exploring Thessaloniki: The Evolution and Impact of Urban Public Spaces and Green Areas
Creators: name: Ingmann, Karlotta
name: Li, Zongze
Publisher: name: Hannover : Institutionelles Repositorium der Leibniz Universität Hannover
Year: 2023
Subjects: subject: Dewey Decimal Classification::700 | Künste, Bildende Kunst allgemein::720 | Architektur

description: Thessaloniki, a bustling and lively city, faces the challenge of limited public and green spaces amidst its dense urban fabric. Compared to European standards, Thessaloniki has one of the lowest ratios of green space per resident, with only 2.6 m² per inhabitant (Latinopoulos et al. 2016:132). On average, some 40 % of the surface area of European cities is made up of urban green infrastructure, with around 18.2 m2 of publicly accessible green space per inhabitant; 44 % of Europe‘s urban population lives within 300 m of a public park (European Commission n.d). This suggests that prior policies and initiatives aimed at tackling this problem have faced significant hurdles and have not yet produced substantial outcomes (cf. Karagianni 2023). The scarcity of green spaces is further exacerbated by the city‘s high residential densities (COT 2017). These circumstances highlight the pressing need for effective interventions and strategies to enhance the availability and accessibility of public and green spaces in Thessaloniki. This text primarily focuses on the western part of Thessaloniki for the analysis of visibility, characteristics/typologies, impact on surroundings, challenges, and solutions & measures of green spaces. Therefore, this text gives an overview of the accessibility of green spaces; some are more hidden as they are small and not in prominent locations, whilst others are very visible due to their size and location. Further, different typologies of green spaces could be defined in the study area due to their different characteristics; these include squares & parks, pathway greenery, tree lines, school courtyards, sports areas, and open non-designed spaces. Each green space brings a potential to enhance its surroundings socially, environmentally, and economically. Finally, some solutions and measures are formulated to combat the challenges the green spaces of Thessaloniki face. By narrowing the scope to this specific area, we aim to gain a comprehensive understanding of the dynamics and issues related to public and green spaces in this particular region of the city.
Holographic dark energy with time depend gravitational constant in the non-flat Ho$\check{r}$ava-Lifshitz cosmology
Creators: name: Saaidi, Kh.
name: Aghamohammadi, A.
name: Setare, M. R.
Publisher: name: arXiv
Year: 2010
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the holographic dark energy on the subject of Ho$\check{r}$ava-Lifshitz gravity with a time dependent gravitational constant (G(t)), in the non-flat space-time. We obtain the differential equation that specify the evolution of the dark energy density parameter based on varying gravitational constant. we find out a relation for the state parameter of the dark energy equation to low redshifts which containing varying $G$ correction.
description: 11 pages
Revitalising Public Spaces and Promoting Social Cohesion through a Sustainable Urban Design: Case Study in the Xirokrini-Vardaris Area of Thessaloniki
Creators: name: Lam, Ka Lok
name: Papanikita, Rigo Angeliki
Publisher: name: Hannover : Institutionelles Repositorium der Leibniz Universität Hannover
Year: 2023
Subjects: subject: Dewey Decimal Classification::700 | Künste, Bildende Kunst allgemein::720 | Architektur

description: This article presents a comprehensive site analysis of the Xirokrini-Vardaris area in Thessaloniki, identifying challenges such as isolation from an abandoned train station, car-centric dominance of parking, underutilised green spaces, and lack of vibrant social areas. To address these, the study team proposes sustainable interventions to transform the Xirokrini-Vardaris area into a vibrant and sustainable urban environment: enhancing social housing with vegetation green walls for microclimate regulation, privacy, security, and air purification. It emphasises redesigning green spaces to invite community interaction, prioritising pedestrian infrastructure, and fostering inclusivity through clear public-private delineation. These interventions aim to create a sustainable, vibrant, and inclusive urban environment, fostering social cohesion and pedestrian mobility. Thessaloniki can thus pave the way for resilient, people-centric urban development.
Phonons in graphene with point defects
Creators: name: Adamyan, Vadym M
name: Zavalniuk, Vladimir V
Publisher: name: arXiv
Year: 2010
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: The phonon density of states (DOS) of graphene with different types of point defects (carbon isotopes, substitution atoms, vacancies) is considered. Using a solvable model which is based on the harmonic approximation and the assumption that the elastic forces act only between nearest neighboring ions we calculate corrections to graphene DOS dependent on type and concentration of defects. In particular the correction due to isotopic dimers is determined. It is shown that a relatively small concentration of defects may lead to significant and specific changes in the DOS, especially at low frequencies, near the Van Hove points and in the vicinity of the K-points of the Brillouin zone. In some cases defects generate one or several narrow gaps near the critical points of the phonon DOS as well as resonance states in the Brillouin zone regular points. All types of defects are characterized by the appearance of one or more additional Van Hove peaks near the (Dirac) K points and their singular contribution may be comparable with the effect of electron-phonon interaction. Besides, for low frequencies and near the critical points the relative change in density of states may be many times higher than the concentration of defects.
description: 19 pages, 7 figures
Understanding the epidemiology of H5N1 and H9N2 influenza outbreaks in Nepal
Creators: name: Dissanayake, Ravi Bandara
name: Akram, Muhammad
name: Bisht, K S.
name: Tshering, Pasang
name: Thakun, K C.
name: Manandhar, P
name: Gautam, S. P.
name: Castellan, David M.
name: Oberol, M. S.
Publisher: name: figshare
Year: 2021
Subjects: subject: 79999 Agricultural and Veterinary Sciences not elsewhere classified
subject: FOS: Other agricultural sciences

description: International Meeting on Emerging Diseases and Surveillance October 31-November 3, Vienna, Austria 2014
The first outbreaks of highly pathogenic avian influenza (HPAI) H5N1 (clade 2.2) and H9N2 were officially reported in Nepal in early 2009 and early 2010,espectively. The first report of H5N1 clade 23.2. la in South Asia was reported in January 2010, Objective: To conduct a retrospective study of laboratory data including description and preliminary analysis of spatial, temporal and population factors related to the distribution and spread of avian influenza H5N1 and H9N2 sub types in Nepal between 2010 and 2012. Methods & Materials: A secondary data analysis was conducted of laboratory data from 2010 to 2012 related to H5N1 and HON2. Two hundred and ninety-eight laboratory submissions were analyzed.
Conclusion
Creators: name: Greinke, Lena
name: Mehnen, Nora
name: Lamberg, Jonas
name: Triantis, Loukas
Publisher: name: Hannover : Institutionelles Repositorium der Leibniz Universität Hannover
Year: 2023
Subjects: subject: Dewey Decimal Classification::700 | Künste, Bildende Kunst allgemein::720 | Architektur

description: [no abstract available]
Longitudinal Scaling of Elliptic Flow in Landau Hydrodynamics
Creators: name: Tamosiunas, Karolis
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: This study presents generalization of the Landau hydrodynamic solution for multiparticle production applied to non-central relativistic heavy ion collisions. Obtained results shows longitudinal scaling of elliptic flow $v_2$ as a function of rapidity shifted by beam rapidity ($y-y_{beam}$) for different energies ($\sqrt{s_{NN}}=62.4$ GeV and 200 GeV) and for different systems (Au-Au and Cu-Cu). It is argued, that the elliptic flow and its longitudinal scaling is due to the initial transverse energy density distribution and initial longitudinal thickness effect.
description: 7 pages 1 figure
Solving mazes with memristors: a massively-parallel approach
Creators: name: Pershin, Yuriy V.
name: Di Ventra, Massimiliano
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Emerging Technologies (cs.ET)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Solving mazes is not just a fun pastime. Mazes are prototype models in graph theory, topology, robotics, traffic optimization, psychology, and in many other areas of science and technology. However, when maze complexity increases their solution becomes cumbersome and very time consuming. Here, we show that a network of memristors - resistors with memory - can solve such a non-trivial problem quite easily. In particular, maze solving by the network of memristors occurs in a massively parallel fashion since all memristors in the network participate simultaneously in the calculation. The result of the calculation is then recorded into the memristors' states, and can be used and/or recovered at a later time. Furthermore, the network of memristors finds all possible solutions in multiple-solution mazes, and sorts out the solution paths according to their length. Our results demonstrate not only the first application of memristive networks to the field of massively-parallel computing, but also a novel algorithm to solve mazes which could find applications in different research fields.
THz driven quantum wells: Coulomb interactions and Stark shifts in the ultrastrong coupling regime
Creators: name: Zaks, Benjamin
name: Stehr, Dominik
name: Truong, Tuan-Anh
name: Petroff, Pierre M.
name: Hughes, Stephen
name: Sherwin, Mark S.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We investigate the near infrared interband absorption of semiconductor quantum wells driven by intense terahertz radiation in the regime of ultrastrong coupling, where the Rabi frequency is a significant fraction of the frequency of the strongly driven transition. With the driving frequency tuned just below the lowest frequency transition between valence subbands, a particularly interesting phenomenon is observed. As the THz power increases, a new peak emerges above the frequency of the undriven exciton peak which grows and eventually becomes the larger of the two. This reversal of relative peak intensity is inconsistent with the Autler-Townes effect in a three-state system while within the rotating wave approximation (RWA). In the samples investigated, the Bloch-Siegert shift (associated with abandoning the RWA), exciton binding energy, the Rabi energy, and non-resonant AC Stark effects are all of comparable magnitude. Solution of a semiconductor Bloch model with one conduction and multiple valence subbands indicates that the AC Stark effect is predominantly responsible for the observed phenomenon.
description: 13 pages, 4 figures
Letter from Frederick P. Keppel to Gunnar Myrdal, August 12, 1937
Creators: name: Keppel, Frederick P. (Frederick Paul), 1875-1943
Publisher: name: Columbia University
Year: 2019
Subjects: Race relations
African Americans--Social conditions
Endowments

description: In this letter, Frederick P. Keppel writes to Gunnar Myrdal to formally invite him to head the Carnegie Corporation's comprehensive study on African American social conditions.
Carnegie-Myrdal Study - Personnel Suggestions through July 15, 1937
Creators: name: Carnegie Corporation Of New York
Publisher: name: Columbia University
Year: 2019
Subjects: Race relations
African Americans--Social conditions
Endowments

description: A list compiled by the Carnegie Corporation of New York (presumably the office of Frederick P. Keppel) detailing the qualifications of the top candidates to lead its study on African American social conditions as of July 15, 1937, including Hendrick Mouw, Alfred Métraux, Roy Harrod, and Gunnar Myrdal.
Band-aid for information loss from black holes
Creators: name: Israel, Werner
name: Yun, Zinkoo
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We summarize, simplify and extend recent work showing that small deviations from exact thermality in Hawking radiation, first uncovered by Kraus and Wilczek, have the capacity to carry off the maximum information content of a black hole. This goes a considerable way toward resolving a long-standing "information-loss paradox".
HQET at order 1/m: III. Decay constants in the quenched approximation
Creators: name: Blossier, Benoît
name: Della Morte, Michele
name: Garron, Nicolas
name: von Hippel, Georg
name: Mendes, Tereza
name: Simma, Hubert
name: Sommer, Rainer
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We report on the computation of the $B_s$ meson decay constant in Heavy Quark Effective Theory on the lattice. The next to leading order corrections in the HQET expansion are included non-perturbatively. We estimate higher order contributions to be very small. The results are extrapolated to the continuum limit, the main systematic error affecting the computation is therefore the quenched approximation used here. The Generalized Eigenvalue Problem and the use of all-to-all propagators are important technical ingredients of our approach that allow to keep statistical and systematic errors under control. We also report on the decay constant $f_{B'_s}$ of the first radially excited state in the $B_s$ sector, computed in the static limit.
description: (1+17) pages, 4 figures (7 pdf files); corrected eqn. (3.4), clarified discussion of RGI matrix element
Tropical Compactification via Ganter’s Algorithm
Creators: name: Kastner, Lars
name: Shaw, Kris
name: Winz, Anna-Lena
Publisher: name: Springer Science and Business Media LLC
Year: 2023
Subjects: subject: 500 Naturwissenschaften und Mathematik::510 Mathematik::510 Mathematik
subject: tropical geometry
subject: tropical compactification
subject: polyhedral complex
subject: polymake

description: We describe a canonical compactification of a polyhedral complex in Euclidean space. When the recession cones of the polyhedral complex form a fan, the compactified polyhedral complex is a subspace of a tropical toric variety. In this case, the procedure is analogous to the tropical compactifications of subvarieties of tori. We give an analysis of the combinatorial structure of the compactification and show that its Hasse diagram can be computed via Ganter’s algorithm. Our algorithm is implemented in and shipped with polymake.
Letter from Dora Chernstrom to Frederick P. Keppel, July 13, 1937
Creators: name: Chernstrom, Dora
Publisher: name: Columbia University
Year: 2019
Subjects: Race relations
African Americans--Social conditions
Endowments

description: In this letter, Dora Chernstrom, secretary to former Rockefeller Foundation official Lawrence K. Frank, writes to Frederick P. Keppel to pass along Frank's impressions and recommendation of Gunnar Myrdal as a candidate to direct the Carnegie Corporation's comprehensive study on African American social conditions.
D1.1 TOX-DetectListe of well characterized strains
Creators: name: Clermont, Dominique
name: Marino, Stephen
name: Denayer, Sarah
name: Gohar, Michel
name: Skjerdal, Olaug Taran
name: Firmesse, Olivier
name: Jacques-Antoine HENNEKINNE
name: NIA, Yacine
Publisher: name: Zenodo
Year: 2021

description: D1.1 TOX-DetectListe of well characterized strains
Common-Resolution Convolution Kernels for Space- and Ground-Based Telescopes
Creators: name: Aniano, G.
name: Draine, B. T.
name: Gordon, K. D.
name: Sandstrom, K.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Multi-wavelength study of extended astronomical objects requires combining images from instruments with differing point spread functions (PSFs). We describe the construction of convolution kernels that allow one to generate (multi-wavelength) images with a common PSF, thus preserving the colors of the astronomical sources. We generate convolution kernels for the cameras of the Spitzer Space Telescope, Herschel Space Observatory, Galaxy Evolution Explorer (GALEX), Wide-field Infrared Survey Explorer (WISE), ground-based optical telescopes (Moffat functions and sum of Gaussians), and Gaussian PSFs. These kernels allow the study of the Spectral Energy Distribution (SED) of extended objects, preserving the characteristic SED in each pixel. The convolution kernels and the IDL packages used to construct and use them are made publicly available.
Axial anomaly as a collective effect of meson spectrum
Creators: name: Klopot, Yaroslav N.
name: Oganesian, Armen G.
name: Teryaev, Oleg V.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the transition form factors of the light mesons in the kinematics, where one photon is real and other is virtual. Using the dispersive approach to axial anomaly we show that the axial anomaly in this case reveals itself as a collective effect of meson spectrum. This allows us to get the relation between possible corrections to continuum and to lower states within QCD method which does not rely on factorization hypothesis. We show, relying on the recent data of BaBar Collaboration, that the relative correction to continuum is quite small, and small correction to continuum can dramatically change the pion form factor.
description: 12 pages, 3 figures, typos corrected, published in Phys. Lett. B
Kelvin-wave turbulence in superfluids
Creators: name: Boué, Laurent
name: Dasgupta, Ratul
name: Laurie, Jason
name: L'vov, Victor
name: Nazarenko, Sergey
name: Procaccia, Itamar
Publisher: name: arXiv
Year: 2011
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Other Condensed Matter (cond-mat.other)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We study the statistical and dynamical behavior of turbulent Kelvin waves propagating on quantized vortices in superfluids, and address the controversy concerning the energy spectrum that is associated with these excitations. Finding the correct energy spectrum is important because Kelvin waves play a major role in the dissipation of energy in superfluid turbulence at near-zero temperatures. In this paper, we show analytically that the solution proposed in Ref. \cite{10LN} enjoys existence, uniqueness and regularity of the pre-factor. Furthermore, we present numerical results of the dynamical equation that describes to leading order the non-local regime of the Kelvin wave dynamics. We compare our findings with the analytical results from the proposed local and non-local theories for Kelvin wave dynamics and show an agreement with the non-local predictions. Accordingly, the spectrum proposed in Ref. \cite{10LN} should be used in future theories of quantum turbulence. Finally, for weaker wave forcing we observe an intermittent behavior of the wave spectrum with a fluctuating dissipative scale, which we interpreted as a finite-size effect characteristic to mesoscopic wave turbulence.
Microscopic reversibility of quantum open systems
Creators: name: Monnai, Takaaki
Publisher: name: arXiv
Year: 2011
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The transition probability for time-dependent unitary evolution is invariant under the reversal of protocols just as in the classical Liouvillian dynamics. In this article, we generalize the expression of microscopic reversibility to externally perturbed large quantum open systems. The time-dependent external perturbation acts on the subsystem during a transient duration, and subsequently the perturbation is switched off so that the total system would thermalize. We concern with the transition probability for the subsystem between the initial and final eigenstates of the subsystem. In the course of time evolution, the energy is irreversibly exchanged between the subsystem and reservoir. The time reversed probability is given by the reversal of the protocol and the initial ensemble. Microscopic reversibility equates the time forward and reversed probabilities, and therefore appears as a thermodynamic symmetry for open quantum systems.
description: numerical demonstration is corrected
Love and Information : director as co-creator
Creators: name: Taylor, Lauren
Publisher: name: University of British Columbia
Year: 2017

description: This thesis forms the written portion of my MFA degree, and looks at the unique challenges and process of directing Caryl Churchill’s 2012 late career opus Love and Information, an English language play which was performed at the Frederic Wood Theatre at The University of British Columbia from January 19-February 4, 2017. The first section contains the original script analysis done in advance of directing the play. The middle section is a record of activity undertaken in pre-production and during production rehearsals. This reveals my thoughts and questions as they occurred in real time, and shows the processes of directing a play that does not have a naturalistic story structure. The final section is an evaluation of the final production and a reflection on the process. The open, poetic nature of the text means that the playwright summons the director to be co-creator in production, and I explore what this means on a practical level in this thesis.
Topological Lattice Actions
Creators: name: Bietenholz, W.
name: Gerber, U.
name: Pepe, M.
name: Wiese, U. -J.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider lattice field theories with topological actions, which are invariant against small deformations of the fields. Some of these actions have infinite barriers separating different topological sectors. Topological actions do not have the correct classical continuum limit and they cannot be treated using perturbation theory, but they still yield the correct quantum continuum limit. To show this, we present analytic studies of the 1-d O(2) and O(3) model, as well as Monte Carlo simulations of the 2-d O(3) model using topological lattice actions. Some topological actions obey and others violate a lattice Schwarz inequality between the action and the topological charge Q. Irrespective of this, in the 2-d O(3) model the topological susceptibility χ_t = ł< Q^2 >/V is logarithmically divergent in the continuum limit. Still, at non-zero distance the correlator of the topological charge density has a finite continuum limit which is consistent with analytic predictions. Our study shows explicitly that some classically important features of an action are irrelevant for reaching the correct quantum continuum limit.
description: 38 pages, 12 figures
Letter from Donald Young to Frederick P. Keppel, June 14, 1937
Creators: name: Young, Donald, 1898-1977
Publisher: name: Columbia University
Year: 2019
Subjects: Race relations
African Americans--Social conditions
Endowments

description: In this letter, Donald Young writes to advise Frederick P. Keppel on a number of elements of the Carnegie Corporation's planned comprehensive study on African American social conditions, including the need to research urban environments in response to the Great Migration, the importance of studying African American cultural differences, and why European candidates for leading the study might not inherently be more free of racial bias or better qualified as directors than American scholars.
Accuracy of the post-Newtonian approximation. II. Optimal asymptotic expansion of the energy flux for quasicircular, extreme mass-ratio inspirals into a Kerr black hole
Creators: name: Zhang, Zhongyang
name: Yunes, Nicolas
name: Berti, Emanuele
Publisher: name: arXiv
Year: 2011
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We study the effect of black hole spin on the accuracy of the post-Newtonian approximation. We focus on the gravitational energy flux for the quasicircular, equatorial, extreme mass-ratio inspiral of a compact object into a Kerr black hole of mass M and spin J. For a given dimensionless spin a=J/M^2 (in geometrical units), the energy flux depends only on the orbital velocity v or (equivalently) on the Boyer-Lindquist orbital radius r. We investigate the formal region of validity of the Taylor post-Newtonian expansion of the energy flux (which is known up to order v^8 beyond the quadrupole formula), generalizing previous work by two of us. The "error function" used to determine the region of validity of the post-Newtonian expansion can have two qualitatively different kinds of behavior, and we deal with these two cases separately. We find that, at any fixed post-Newtonian order, the edge of the region of validity (as measured by v/v_{ISCO}, where v_{ISCO} is the orbital velocity at the innermost stable circular orbit) is only weakly dependent on a. Unlike in the nonspinning case, the lack of sufficiently high order terms does not allow us to determine if there is a convergent to divergent transition at order v^6. Independently of a, the inclusion of angular multipoles up to and including l=5 in the numerical flux is necessary to achieve the level of accuracy of the best-known (N=8) PN expansion of the energy flux.
description: 9 pages, 8 figures. Minor changes to match published version
Avant-propos
Creators: name: Simont, Juliette
Publisher: name: Classiques Garnier
Year: 2023
Subjects: subject: Écologie
subject: Féminisme
subject: Antiracisme
subject: Anticolonialisme
subject: Engagement
subject: Oppression
subject: Libération
subject: Ecology
subject: FOS: Biological sciences
subject: Feminism
subject: Anti-racism
subject: Anti-colonialism
subject: Engagement
subject: Oppression
subject: Liberation

description: Le dossier ici présenté porte sur la politique de Sartre et ses usages actuels dans divers champs : écologie politique, études féministes, études de genre, théorie décoloniale, antiracisme, défense des minorités. Il accorde une pertinence neuve à la notion sartrienne d’engagement, trop souvent décriée comme vieillie.
description: This special report looks at Sartre’s politics and its impact today in various fields: political ecology, feminist studies, gender studies, decolonial theory, anti-racism, defense of minorities. It gives new pertinence to the Sartrean notion of engagement, too often decried as outdated.
Higgs Mass Corrections in the SUSY B-L Model with Inverse Seesaw
Creators: name: Elsayed, A.
name: Khalil, S.
name: Moretti, S.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In the context of the Supersymmetric (SUSY) B-L (Baryon minus Lepton number) model with an inverse seesaw mechanism, we calculate the one-loop radiative corrections due to right-handed (s)neutrinos to the mass of the lightest Higgs boson when the latter is Standard Model (SM)-like. We show that such effects can be as large as O(100) GeV, thereby giving an absolute upper limit on such a mass around 200 GeV. The importance of this result from a phenomenological point of view is twofold. On the one hand, this enhancement greatly reconciles theory and experiment, by alleviating the so-called `little hierarchy problem' of the minimal SUSY realization, whereby the current experimental limit on the SM-like Higgs mass is very near its absolute upper limit predicted theoretically, of 130 GeV. On the other hand, a SM-like Higgs boson with mass below 200 GeV is still well within the reach of the Large Hadron Collider (LHC), so that the SUSY realization discussed here is just as testable as the minimal version.
description: 4 pages, 2 figures
Group of Children Playing Rough
Creators: name: Kelsey, Carleton
name: Amagansett Historical Association
Publisher: name: Unknown
Year: 0
Subjects: Photographs
Girls
Boys
Children

description: This image shows six children involved in some sort of physical game. The note on the back names one of the kids as "Skippy" Sheldon. This photograph was either taken or collected by Amagansett historian and librarian Carleton Kelsey.
description: This photograph is part of the collection of the Carleton Kelsey Collection of the Amagansett Historical Association. Kelsey was a local historian and librarian who collected photographs from others to add to the many photographs he took of the community himself.
On bi-integrable natural Hamiltonian systems on the Riemannian manifolds
Creators: name: Tsiganov, A. V.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences
subject: 37J35, 70H06, 58J60

description: We introduce the concept of natural Poisson bivectors, which generalizes the Benenti approach to construction of natural integrable systems on the Riemannian manifolds and allows us to consider almost the whole known zoo of integrable systems in framework of bi-hamiltonian geometry.
description: 24 pages, LaTeX with AMSfonts (some new references were added)
Will the US Economy Recover in 2010? A Minimal Spanning Tree Study
Creators: name: Zhang, Yiting
name: Lee, Gladys Hui Ting
name: Wong, Jian Cheng
name: Kok, Jun Liang
name: Prusty, Manamohan
name: Cheong, Siew Ann
Publisher: name: arXiv
Year: 2010
Subjects: subject: Statistical Finance (q-fin.ST)
subject: Risk Management (q-fin.RM)
subject: FOS: Economics and business

description: We calculated the cross correlations between the half-hourly times series of the ten Dow Jones US economic sectors over the period February 2000 to August 2008, the two-year intervals 2002--2003, 2004--2005, 2008--2009, and also over 11 segments within the present financial crisis, to construct minimal spanning trees (MSTs) of the US economy at the sector level. In all MSTs, a core-fringe structure is found, with consumer goods, consumer services, and the industrials consistently making up the core, and basic materials, oil and gas, healthcare, telecommunications, and utilities residing predominantly on the fringe. More importantly, we find that the MSTs can be classified into two distinct, statistically robust, topologies: (i) star-like, with the industrials at the center, associated with low-volatility economic growth; and (ii) chain-like, associated with high-volatility economic crisis. Finally, we present statistical evidence, based on the emergence of a star-like MST in Sep 2009, and the MST staying robustly star-like throughout the Greek Debt Crisis, that the US economy is on track to a recovery.
description: elsarticle class, includes amsmath.sty, graphicx.sty and url.sty. 68 pages, 16 figures, 8 tables. Abridged version of the manuscript presented at the Econophysics Colloquim 2010, incorporating reviewer comments
Letter from Malcolm W. Davis to Frederick P. Keppel, March 3, 1937
Creators: name: Davis, Malcolm W. (Malcolm Waters), 1889-1970
Publisher: name: Columbia University
Year: 2019
Subjects: Race relations
African Americans--Social conditions
Endowments

description: In this letter, Malcolm W. Davis, Director of the Carnegie Endowment for International Peace's European Center, writes to provide Frederick P. Keppel with information on two possible candidates to lead the Carnegie Corporation's study on African American social conditions, retired Dutch colonial administrator Hendrick Mouw and Swiss anthropologist Alfred Métraux.
Cartilha Virtual 03: Todos Juntos pela água - 3ª Edição
Creators: name: Malheiros, Tadeu Fabrício
Publisher: name: figshare
Year: 2021
Subjects: subject: 50203 Environmental Education and Extension
subject: FOS: Earth and related environmental sciences

description: A Cartilha virtual 03 "Todos Juntos pela água" é parte integrante do material utilizado no curso, em formato à distância, EaD Água como elemento Interdisciplinar do Ensino nas Escolas, realizado pela Universidade de São Paulo, em parceria com a ANA - Agência Nacional de Água e Saneamento Básico, e a Rede PROFCIAMB - Programa de Pós Graduação Mestrado profissional em Rede nacional para o Ensino das Ciências Ambientais.
Letter from Thomas B. Appleget to Raymond B. Fosdick, May 10, 1937 (copy enclosed with May 11, 1937 letter from Fosdick to Frederick P. Keppel)
Creators: name: Appleget, Thomas B. (Thomas Baird)
Publisher: name: Columbia University
Year: 2019
Subjects: Race relations
African Americans--Social conditions
Endowments

description: In this letter, Thomas B. Appleget, Vice President of the Rockefeller Foundation, writes to Raymond B. Fosdick, President of the Rockefeller Foundation, in response a request from Frederick P. Keppel for information on a proposed director for the Carnegie Corporation's comprehensive sociological study on African American life, British economist Roy Harrod.
Evidence for a correlation between the Si II 4000 width and Type Ia supernova color
Creators: name: Nordin, J.
name: Ostman, L.
name: Goobar, A.
name: Balland, C.
name: Lampeitl, H.
name: Nichol, R. C.
name: Sako, M.
name: Schneider, D. P.
name: Smith, M.
name: Sollerman, J.
name: Wheeler, J. C.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We study the pseudo equivalent width of the Si II 4000 feature of Type Ia supernovae in the redshift range 0.0024 < z < 0.634. We find that this spectral indicator correlates with the lightcurve color excess (SALT2 c) as well as previously defined spectroscopic subclasses (Branch types) and the evolution of the Si II 6150 velocity, i.e., the so called velocity gradient. Based on our study of 55 objects from different surveys, we find indications that the Si II 4000 spectral indicator could provide important information to improve cosmological distance measurements with Type Ia supernovae.
description: 9 pages, 8 figures, 2 tables. Minor changes to match version accepted by the Astrophysical Journal
CFT and topological recursion
Creators: name: Kostov, Ivan
name: Orantin, Nicolas
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We study the quasiclassical expansion associated with a complex curve. In a more specific context this is the 1/N expansion in U(N)-invariant matrix integrals. We compare two approaches, the CFT approach and the topological recursion, and show their equivalence. The CFT approach reformulates the problem in terms of a conformal field theory on a Riemann surface, while the topological recursion is based on a recurrence equation for the observables representing symplectic invariants on the complex curve. The two approaches lead to two different graph expansions, one of which can be obtained as a partial resummation of the other.
description: Minor corrections
Effective axial-vector coupling of gluon as an explanation to the top quark asymmetry
Creators: name: Gabrielli, Emidio
name: Raidal, Martti
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 explore the possibility that the large $t\bar t$ forward-backward asymmetry measured by the CDF detector at Tevatron could be due to a universal effective axial-vector coupling of gluon. Using an effective field theory approach we show model independently how such a log-enhanced coupling occurs at 1-loop level. The interference with QCD gluon vector coupling naturally induces the observed positive forward-backward $t\bar t$ asymmetry that grows with $t\bar t$ invariant mass and is consistent with the cross section measurements. This scenario does not involve new flavor changing couplings nor operators that interfere with QCD, and, therefore, is not constrained by the LHC searches for 4-quark contact interactions. We predict top quark polarization effects that grow with energy and allow to test this scenario at the LHC. Our proposal offers a viable alternative to new physics scenarios that explain the $t\bar t$ forward-backward asymmetry anomaly with the interference between QCD and tree level new physics amplitudes.
description: Few small changes in the text, same as published version, 5 pages, 2 figures