cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Strata-Sphere
Creators: name: Szymberski, Christopher
name: Scott, Heather Anne
name: Strecker, Kristina
name: Aitken, Stephanie
Publisher: name: The University of British Columbia
Year: 2016

description: The intention of this project was to extend an exploration of building with wood, its unique characteristics as a material, and the use of wood joinery techniques. The result is a building system based on modular pieces of plywood joined by way of both compression and tension and an overlapping/underlapping method of attachment. Originally born from a studio project lead by AnnaLisa Meyboom, students were instructed to explore different wood products and methods of joining inspired by traditional knowledge and augmented by the application of new fabrication technologies and simulated modeling software. Disclaimer: “UBC SEEDS provides students with the opportunity to share the findings of their studies, as well as their opinions, conclusions and recommendations with the UBC community. The reader should bear in mind that this is a student project/report and is not an official document of UBC. Furthermore readers should bear in mind that these reports may not reflect the current status of activities at UBC. We urge you to contact the research persons mentioned in a report or the SEEDS Coordinator about the current status of the subject matter of a project/report.”
Evolution in Minority Games II. Games with Variable Strategy Spaces
Creators: name: Li, Yi
name: Riolo, Rick
name: Savit, Robert
Publisher: name: arXiv
Year: 1999
Subjects: subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: FOS: Physical sciences

description: We continue our study of evolution in minority games by examining games in which agents with poorly performing strategies can trade in their strategies for new ones from a different strategy space. In the context of the games discussed in this paper, this means allowing for strategies that use information from different numbers of time lags, m. We find, in all the games we study, that after evolution, wealth per agent is high for agents with strategies drawn from small strategy spaces (small m), and low for agents with strategies drawn from large strategy spaces (large m). In the game played with N agents, wealth per agent as a function of m is very nearly a step function. The transition is at m=mt, where mt~mc-1. Here mc is the critical value of m at which N agents playing the game with a fixed strategy space (fixed m) have the best emergent coordination and the best utilization of resources. We also find that overall system-wide utilization of resources is independent of N. Furthermore, although overall system-wide utilization of resources after evolution varies somewhat depending on some other aspects of the evolutionary dynamics, in the best cases, utilization of resources is on the order of the best results achieved in evolutionary games with fixed strategy spaces. Simple explanations are presented for some of our main results.
description: 18 pages text, 8 figures. Postscript from msword for text, from matlab for figures
Interventionist Counterfactuals on Causal Teams
Creators: name: Barbero, Fausto
name: Sandu, Gabriel
Publisher: name: arXiv
Year: 2019
Subjects: subject: Logic in Computer Science (cs.LO)
subject: Logic (math.LO)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: We introduce an extension of team semantics which provides a framework for the logic of manipulationist theories of causation based on structural equation models, such as Woodward's and Pearl's; our causal teams incorporate (partial or total) information about functional dependencies that are invariant under interventions. We give a unified treatment of observational and causal aspects of causal models by isolating two operators on causal teams which correspond, respectively, to conditioning and to interventionist counterfactual implication. We then introduce formal languages for deterministic and probabilistic causal discourse, and show how various notions of cause (e.g. direct and total causes) may be defined in them. Through the tuning of various constraints on structural equations (recursivity, existence and uniqueness of solutions, full or partial definition of the functions), our framework can capture different causal models. We give an overview of the inferential aspects of the recursive, fully defined case; and we dedicate some attention to the recursive, partially defined case, which involves a shift of attention towards nonclassical truth values.
description: In Proceedings CREST 2018, arXiv:1901.00073
title: Braunschweigische Heimat, 55. Jahrgang 1969
Creators: name: :None
Publisher: name: Braunschweigischer Landesverein für Heimatschutz
Year: 1969
Subjects: subject: Brunsvicensien der Universitätsbibliothek Braunschweig, Braunschweig, Landeskunde
subject: 900

description: Braunschweigische Heimat, vol. 55. 1969
title: Die Stadt Braunschweig im Jahre 1880 - 1886
Creators: name: :None
Publisher: name: Universitätsbibliothek Braunschweig
Year: 1880
Subjects: subject: Brunsvicensien der Universitätsbibliothek Braunschweig
subject: Stadt Braunschweig
subject: 902

description: Die Stadt Braunschweig im Jahre [...] ; Verwaltungsbericht des Stadt-Magistrats, vol. 1880-1886
Measurement of Relativistic Orbital Decay in the PSR B1534+12 Binary System
Creators: name: Stairs, I. H.
name: Arzoumanian, Z.
name: Camilo, F.
name: Lyne, A. G.
name: Nice, D. J.
name: Taylor, J. H.
name: Thorsett, S. E.
name: Wolszczan, A.
Publisher: name: arXiv
Year: 1997
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We have made timing observations of binary pulsar PSR B1534+12 with radio telescopes at Arecibo, Green Bank, and Jodrell Bank. By combining our new observations with data collected up to seven years earlier, we obtain a significantly improved solution for the astrometric, spin, and orbital parameters of the system. For the first time in any binary pulsar system, no fewer than five relativistic or "post-Keplerian" orbital parameters are measurable with useful accuracies in a theory-independent way. We find the orbital period of the system to be decreasing at a rate close to that expected from gravitational radiation damping, according to general relativity, although the precision of this test is limited to about 15% by the otherwise poorly known distance to the pulsar. The remaining post-Keplerian parameters are all consistent with one another and all but one of them have fractional accuracies better than 1%. By assuming that general relativity is the correct theory of gravity, at least to the accuracy demanded by this experiment, we find the masses of the pulsar and companion star each to be 1.339+-0.003 Msun and the system's distance to be d = 1.1+-0.2 kpc, marginally larger than the d ~ 0.7 kpc estimated from the dispersion measure. The increased distance reduces estimates of the projected rate of coalescence of double neutron-star systems in the universe, a quantity of considerable interest for experiments with terrestrial gravitational wave detectors such as LIGO.
description: 17 pages, 4 figures, submitted to the ApJ
Observation of superconductivity in pressurized Weyl semimetal candidate TaIrTe4
Creators: name: Cai, Shu
name: Emmanouilidou, Eve
name: Guo, Jing
name: Li, Xiaodong
name: Li, Yanchuan
name: Yang, Ke
name: Li, Aiguo
name: Wu, Qi
name: Ni, Ni
name: Sun, Liling
Publisher: name: arXiv
Year: 2018
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Here we report the observation of superconductivity in pressurized type-II Weyl semimetal (WSM) candidate TaIrTe4 by means of complementary high-pressure transport and synchrotron X-ray diffraction measurements. We find that TaIrTe4 shows superconductivity with transition temperature (TC) of 0.57 K at the pressure of ~23.8 GPa. Then, the TC value increases with pressure and reaches ~2.1 K at 65.7 GPa. In situ high-pressure Hall coefficient (RH) measurements at low temperatures demonstrate that the positive RH increases with pressure until the critical pressure of the superconducting transition is reached, but starts to decrease upon further increasing pressure. Above the critical pressure, the positive magnetoresistance effect disappears simultaneously. Our high pressure X-ray diffraction measurements reveal that, at around the critical pressure the lattice of the TaIrTe4 sample is distorted by the application of pressure and its volume is reduced by ~19.2%, the value of which is predicted to result in the change of the electronic structure significantly. We propose that the pressure-induced distortion in TaIrTe4 is responsible for the change of topology of Fermi surface and such a change favors the emergence of superconductivity. Our results clearly demonstrate the correlation among the lattice distortion, topological physics and superconductivity in the WSM.
description: 21 pages, 4 figures
Herpetotherium undetermined
Creators: name: Beck, Robin M. D.
name: Voss, Robert S.
name: Jansa, Sharon A.
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Didelphimorphia
Didelphidae
Herpetotherium
Herpetotherium undetermined

description: † Herpetotherium
 SPECIES SCORED: † Herpetotherium fugax (type species), † H. cf. fugax.
GEOLOGICAL PROVENANCE OF SCORED SPECIMENS: White River Formation, Wyoming.
AGE OF SCORED SPECIMENS: All examined specimens come from the Orellan North American Land Mammal Age, which is currently estimated as spanning from 33.9 to 32.0 Mya (Prothero and Emry, 2004; Zanazzi et al., 2009).
ASSIGNED AGE RANGE: 33.900 –32.000 Mya.
 REMARKS: † Herpetotherium fugax is known from numerous specimens from the White River Formation, including well-preserved skulls and associated postcranial material (Gabbert, 1998; Sánchez-Villagra et al., 2007; Horovitz et al., 2008). Sánchez-Villagra et al. (2007) included † Herpetotherium in a comprehensive morphological phylogenetic analysis of marsupials and relatives, and found that this taxon fell outside (crown-clade) Marsupialia. Most subsequent morphological and total-evidence analyses have found a similar result, in which † Herpetotherium either falls outside Marsupialia or is not unambiguously a member of this clade (Beck et al., 2008, 2014, 2016; Horovitz et al., 2008, 2009; Beck, 2012, 2017b; Forasiepi et al., 2014a; Suarez et al., 2015; Lorente et al., 2016; Carneiro and Oliveira, 2017a, 2017b; Maga and Beck, 2017; Carneiro, 2018, 2019; Carneiro et al., 2018; Engelman et al., 2020; Muizon et al., 2018; Abello and Candela, 2019; Rangel et al., 2019; Ladevèze et al., 2020; Muizon and Ladevèze, 2020; Zimicz and Goin, 2020). However, a few recent published phylogenetic analyses—namely, the morphological analyses of Forasiepi (2009: fig. 51), Engelman and Croft (2014: fig. 6), and Wilson et al. (2016: fig. 3), and the tip-and-node dated total evidence analysis of Maga and Beck (2017: fig. 39)—have found † Herpetotherium within Marsupialia, so some questions remain regarding its affinities.
description: Published as part of Beck, Robin M. D., Voss, Robert S. & Jansa, Sharon A., 2022, Craniodental Morphology And Phylogeny Of Marsupials, pp. 1-353 in Bulletin of the American Museum of Natural History 2022 (457) on page 313, DOI: 10.1206/0003-0090.457.1.1, http://zenodo.org/record/6971356
title: Die Stadt Braunschweig im Jahre 1887 - 1891
Creators: name: :None
Publisher: name: Universitätsbibliothek Braunschweig
Year: 1887
Subjects: subject: Brunsvicensien der Universitätsbibliothek Braunschweig
subject: Stadt Braunschweig
subject: 902

description: Die Stadt Braunschweig im Jahre [...] ; Verwaltungsbericht des Stadt-Magistrats, vol. 1887-1891
Spin-lattice coupling mediated giant magnetodielectricity across the spin reorientation in Ca2FeCoO5
Creators: name: Sharma, Gaurav
name: Tyagi, Shekhar
name: Reddy, V. R.
name: Awasthi, A. M.
name: Choudhary, R. J.
name: Sinha, A. K.
name: Sathe, Vasant
Publisher: name: arXiv
Year: 2018
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The structural, phonon, magnetic, dielectric, and magneto dielectric responses of the pure bulk Brownmillerite compound Ca2FeCoO5 are reported. This compound showed giant magneto dielectric response (10%-24%) induced by strong spin-lattice coupling across its spin reorientation transition (150-250 K). The role of two Debye temperatures pertaining to differently coordinated sites in the dielectric relaxations is established. The positive giant magneto-dielectricity is shown to be a direct consequence of the modulations in the lattice degrees of freedom through applied external field across the spin reorientation transition. Our study illustrates novel control of magneto-dielectricity by tuning the spin reorientation transition in a material that possess strong spin lattice coupling.
description: 7 pages, 12 figures
Dynamical Histories of the Crater II and Hercules Dwarf Galaxies
Creators: name: Fu, Sal Wanying
name: Simon, Joshua D.
name: Jara, Alex G. Alarcón
Publisher: name: arXiv
Year: 2019
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We investigate the possibility that the dwarf galaxies Crater II and Hercules have previously been tidally stripped by the Milky Way. We present Magellan/IMACS spectra of candidate member stars in both objects. We identify 37 members of Crater II, 25 of which have velocity measurements in the literature, and we classify 3 stars within that subset as possible binaries. We find that including or removing these binary candidates does not change the derived velocity dispersion of Crater II. Excluding the binary candidates, we measure a velocity dispersion of $σ_{V_{los}} = 2.7^{+0.5}_{-0.4}$ \kms, corresponding to $M/L = 47^{+17}_{-13}$ M$_{\odot}/$L$_{\odot}$. We measure a mean metallicity of [Fe/H] = $-1.95^{+0.06}_{-0.05}$, with a dispersion of $σ_{\mbox{[Fe/H]}} = 0.18^{+0.06}_{-0.08}$. Our velocity dispersion and metallicity measurements agree with previous measurements for Crater II, and confirm that the galaxy resides in a kinematically cold dark matter halo. We also search for spectroscopic members stripped from Hercules in the possible extratidal stellar overdensities surrounding the dwarf. For both galaxies, we calculate proper motions using \textit{Gaia} DR2 astrometry, and use their full 6D phase space information to evaluate the probability that their orbits approach sufficiently close to the Milky Way to experience tidal stripping. Given the available kinematic data, we find a probability of $\sim$40% that Hercules has suffered tidal stripping. The proper motion of Crater II makes it almost certain to be stripped.
description: 19 pages, 11 figures, submitted to ApJ
Additional file 1: of Prevalence of hepatitis B surface antigen (HBsAg) positivity and its associated factors in Rwanda
Creators: name: Makuza, Jean
name: Rwema, Jean
name: Ntihabose, Corneille
name: Donatha Dushimiyimana
name: Umutesi, Justine
name: Nisingizwe, Marie
name: Janvier Serumondo
name: Semakula, Muhamed
name: Riedel, David
name: Nsanzimana, Sabin
Publisher: name: figshare
Year: 2019
Subjects: subject: Medicine
subject: Biotechnology
subject: Immunology
subject: FOS: Clinical medicine
subject: Developmental Biology
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Interview guide. (DOCX 128 kb)
Charged particles in external fields as physical examples of quasi-exactly solvable models: a unified treatment
Creators: name: Chiang, Chun-Ming
name: Ho, Choon-Lin
Publisher: name: arXiv
Year: 2000
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Condensed Matter (cond-mat)
subject: Mathematical Physics (math-ph)
subject: Spectral Theory (math.SP)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We present a unified treatment of three cases of quasi-exactly solvable problems, namely, charged particle moving in Coulomb and magnetic fields, for both the Schrödinger and the Klein-Gordon case, and the relative motion of two charged particles in an external oscillator potential. We show that all these cases are reducible to the same basic equation, which is quasi-exactly solvable owing to the existence of a hidden $sl_2$ algebraic structure. A systematic and unified algebraic solution to the basic equation using the method of factorization is given. Analytic expressions of the energies and the allowed frequencies for the three cases are given in terms of the roots of one and the same set of Bethe ansatz equations.
description: RevTex, 15 pages, no figures
Query-oriented text summarization based on hypergraph transversals
Creators: name: Van Lierde, Hadrien
name: Chow, Tommy W. S.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Computation and Language (cs.CL)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Existing graph- and hypergraph-based algorithms for document summarization represent the sentences of a corpus as the nodes of a graph or a hypergraph in which the edges represent relationships of lexical similarities between sentences. Each sentence of the corpus is then scored individually, using popular node ranking algorithms, and a summary is produced by extracting highly scored sentences. This approach fails to select a subset of jointly relevant sentences and it may produce redundant summaries that are missing important topics of the corpus. To alleviate this issue, a new hypergraph-based summarizer is proposed in this paper, in which each node is a sentence and each hyperedge is a theme, namely a group of sentences sharing a topic. Themes are weighted in terms of their prominence in the corpus and their relevance to a user-defined query. It is further shown that the problem of identifying a subset of sentences covering the relevant themes of the corpus is equivalent to that of finding a hypergraph transversal in our theme-based hypergraph. Two extensions of the notion of hypergraph transversal are proposed for the purpose of summarization, and polynomial time algorithms building on the theory of submodular functions are proposed for solving the associated discrete optimization problems. The worst-case time complexity of the proposed algorithms is squared in the number of terms, which makes it cheaper than the existing hypergraph-based methods. A thorough comparative analysis with related models on DUC benchmark datasets demonstrates the effectiveness of our approach, which outperforms existing graph- or hypergraph-based methods by at least 6% of ROUGE-SU4 score.
description: This is the unrefereed Author's Original Version (or pre-print Version) of the article
Entropy of Three-Dimensional Black Holes in String Theory
Creators: name: Birmingham, Danny
name: Sachs, Ivo
name: Sen, Siddhartha
Publisher: name: arXiv
Year: 1998
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: It is observed that the three-dimensional BTZ black hole is a supersymmetric solution of the low-energy field equations of heterotic string theory compactified on an Einstein space. The solution involves a non-zero dilaton and NS-NS H-field. The entropy of the extreme black hole can then be computed using string theory and the asymptotic properties of anti-de Sitter space, without recourse to a D-brane analysis. This provides an explicit example of a black hole whose entropy can be computed using fundamental string theory, as advocated by Susskind.
description: 7 pages, Latex, Two additional references
title: Die Stadt Braunschweig im Jahre 1892 - 1896
Creators: name: :None
Publisher: name: Universitätsbibliothek Braunschweig
Year: 1892
Subjects: subject: Brunsvicensien der Universitätsbibliothek Braunschweig
subject: Stadt Braunschweig
subject: 902

description: Die Stadt Braunschweig im Jahre [...] ; Verwaltungsbericht des Stadt-Magistrats, vol. 1892-1896
Exploiting Randomness in Quantum Information Processing
Creators: name: Lee, Chiu Fan
name: Johnson, Neil F.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We consider how randomness can be made to play a useful role in quantum information processing - in particular, for decoherence control and the implementation of quantum algorithms. For a two-level system in which the decoherence channel is non-dissipative, we show that decoherence suppression is possible if memory is present in the channel. Random switching between two potentially harmful noise sources can then provide a source of stochastic control. Such random switching can also be used in an advantageous way for the implementation of quantum algorithms.
description: 10 pages, final version
Choose your own campus
Creators: name: Prins, Jake
Publisher: name: The University of British Columbia
Year: 2016

description: Disclaimer: “UBC SEEDS provides students with the opportunity to share the findings of their studies, as well as their opinions, conclusions and recommendations with the UBC community. The reader should bear in mind that this is a student project/report and is not an official document of UBC. Furthermore readers should bear in mind that these reports may not reflect the current status of activities at UBC. We urge you to contact the research persons mentioned in a report or the SEEDS Coordinator about the current status of the subject matter of a project/report.”
Holographic Entanglement Entropy in Cutoff AdS
Creators: name: Park, Chanyong
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We investigate the holographic entanglement entropy of deformed conformal field theories which are dual to a cutoff AdS space. The holographic entanglement entropy evaluated on a three-dimensional Poincare AdS space with a finite cutoff can be reinterpreted as that of the dual field theory deformed by either a boost or $T \bar{T}$ deformation. For the boost case, we show that, although it trivially acts on the underlying theory, it nontrivially affects the entanglement entropy due to the length contraction. For a three-dimensional AdS, we show that the effect of the boost transformation can be reinterpreted as the rescaling of the energy scale, similar to the $T \bar{T}$ deformation. Under the boost and $T \bar{T}$ deformation, the $c$-function of the entanglement entropy exactly shows the features expected by the Zamoldchikov's $c$-theorem. The deformed theory is always stationary at a UV fixed point and monotonically flows to another CFT in the IR fixed point. We also show that the holographic entanglement entropy in a Poincare cutoff AdS space can reproduce the exact same result of the $T \bar{T}$ deformed theory on a two-dimensional sphere.
description: 20 pages, 1 figure
title: Braunschweigische Heimat, 80. Jahrgang 1994
Creators: name: :None
Publisher: name: Braunschweigischer Landesverein für Heimatschutz
Year: 1994
Subjects: subject: Brunsvicensien der Universitätsbibliothek Braunschweig, Braunschweig, Landeskunde
subject: 900

description: Braunschweigische Heimat, vol. 80. 1994
Using Theory of Planned Behavior to Understand the Prevalence of Formula Feeding among Chinese Community in New York City - a Mixed-Methods Study
Creators: Lee, Adele
Publisher: name: Columbia University
Year: 2019
Subjects: Nutrition
Bottle feeding
Chinese
Newborn infants--Nutrition
Breastfeeding

description: Background To date, the vast majority of studies on infant feeding behavior of Chinese population have been conducted in Asian and some western countries but not the U.S. As the fastest growing Asian subgroup and with the largest Chinese community outside of Asia, studies that focus on their health choices in the U.S. are long overdue. Where studies are available, the overseas Chinese population is often regarded as high formula feeding and low breastfeeding. Chinese mothers often cite family, cultural, and social expectations as the determining factors for their choice of infant feeding. Given the cultural beliefs and traditions of Chinese immigrant population in the U.S., this study argues for the importance of including the input of the overall community, as opposed to only mothers, as a more data-based explanation of the prevalence of formula feeding among the Chinese community in New York City, and in addition, why this community continues to accept formula feeding as the norm. Methods Guided by Theory of Planned Behavior, this study incorporated both quantitative and qualitative components. A total of 434 surveys and 20 in-person interviews were collected in Chinese populated areas in New York City. Results In examining the prevalence of formula feeding in the Chinese community, both quantitative and qualitative findings consistently identified the central role friends and family played in motivating certain groups to use formula. These less acculturated, educated, and China-born subgroups are likely to conform to the idea that breast milk supplemented by infant formula is necessary in order to meet the nutritional demand of a growing infant. For the first-generation immigrants who breastfeed for health benefits and tradition, their attitudes towards infant feeding shifted after seeing other formula-fed children in populated Chinese communities as evident by shorter breastfeeding durations for the child born in the U.S. as compared to previous child born in China. As for the second-generation, who are more acculturated and educated, although they are aware of the benefits of breastfeeding and intend to breastfeed, they are expected by the older generation to continue the formula feeding tradition in the family. Conclusion When investigating why infant formula remained as the popular choice of feeding and is often perceived as the norm by this community, the current study identified the psychosocial variables that motivated individual subgroups and the context underlay. The findings provided new insights to the current literature and are intended to help guide future studies and to develop educational policy interventions to improve the overall infant feeding experiences for the Chinese community in New York City.
Additional file 3: of Change in psychosocial factors connected to coping after inpatient treatment for substance use disorder: a systematic review
Creators: name: Johannessen, Dagny
name: NordfjĂŚrn, Trond
name: Geirdal, Amy
Publisher: name: figshare
Year: 2019
Subjects: subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences

description: Main search (example draft from the systematic search in Medline Ovid). (PDF 92 kb)
title: Braunschweigische Heimat, 81. - 82. Jahrgang 1995 - 1996
Creators: name: :None
Publisher: name: Braunschweigischer Landesverein für Heimatschutz
Year: 1995
Subjects: subject: Brunsvicensien der Universitätsbibliothek Braunschweig, Braunschweig, Landeskunde
subject: 900

description: Braunschweigische Heimat, vol. 81.-82. 1995-1996
Interlayer Exciton Laser with Extended Spatial Coherence in an Atomically-Thin Heterostructure
Creators: name: Paik, Eunice Y.
name: Zhang, Long
name: Burg, G. William
name: Gogna, Rahul
name: Tutuc, Emanuel
name: Deng, Hui
Publisher: name: arXiv
Year: 2019
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Two-dimensional semiconductors have emerged as a new class of materials for nanophotonics for their strong exciton-photon interaction and flexibility for engineering and integration. Taking advantage of these properties, we engineer an efficient lasing medium based on dipolar interlayer excitons, in rotationally aligned atomically thin heterostructures. Lasing is measured from a transition metal dichalcogenide hetero-bilayer integrated in a silicon nitride grating resonator. A sharp increase in the spatial coherence of the emission was observed across the lasing threshold. The work establishes interlayer excitons in two-dimensional heterostructures as a silicon-compatible coherent medium. With electrically tunable light-matter interaction strength and long-range dipolar interactions, these interlayer excitons promise both applications to low-power, ultrafast laser and modulators and rich many-body quantum phenomena.
The action for the (propagating) torsion and the limits on the torsion parameters from present experimental data
Creators: name: Belyaev, A. S.
name: Shapiro, Ilya L.
Publisher: name: arXiv
Year: 1997
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Starting from the well established form of the Dirac action coupled to the electromagnetic and torsion field we find that there is some additional softly broken local symmetry associated with torsion. This symmetry fixes the form of divergences of the effective action after the spinor fields are integrated out. Then the requirement of renormalizability fixes the torsion field to be equivalent to some massive pseudovector and its action is fixed with accuracy to the values of coupling constant of torsion-spinor interaction, mass of the torsion and higher derivative terms. Implementing this action into the abelian sector of the Standard Model we establish the upper bounds on the torsion mass and coupling. In our study we used results of present experimental limits on four-fermion contact interaction (LEP, HERA, SLAC, SLD, CCFR) and TEVATRON limits on the cross section of new gauge boson, which could be produced as a resonance at high energy $p\bar{p}$ collisions.
description: 12 pages, LaTeX, 5 figures included
title: Betriebsresultate der Herzoglich Braunschweigischen Eisenbahnen / Herzoglich Braunschweig-Lüneburgische Eisenbahn- und Postdirection. Jahrgang 1850
title: Betriebsresultate der Braunschweigischen Eisenbahnen / veröffentlicht durch die Direction der Braunschweigischen Eisenbahn-Gesellschaft. Jahrgang 1850
titleType: AlternativeTitle
Creators: name: :None
Publisher: name: Vieweg
Year: 1851
Subjects: subject: Brunsvicensien der Universitätsbibliothek Braunschweig
subject: Eisenbahngeschichte
subject: 902

description: Betriebsresultate der Herzoglich Braunschweigischen Eisenbahnen / Herzoglich Braunschweig-Lüneburgische Eisenbahn- und Postdirection., vol. 1850
Additional file 1: of Oral corticosteroid dose changes and impact on peripheral blood eosinophil counts in patients with severe eosinophilic asthma: a post hoc analysis
Creators: name: Prazma, Charlene
name: Bel, Elisabeth
name: Price, Robert
name: Bradford, Eric
name: Albers, Frank
name: Yancey, Steven
Publisher: name: figshare
Year: 2019
Subjects: subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Genetics
subject: Molecular Biology
subject: 60506 Virology

description: Table S1. Post hoc analysis of SIRIUS (demographics and clinical characteristics). (DOC 45 kb)
title: Betriebsresultate der Herzoglich Braunschweigischen Eisenbahnen / Herzoglich Braunschweig-Lüneburgische Eisenbahn- und Postdirection. Jahrgang 1851
title: Betriebsresultate der Braunschweigischen Eisenbahnen / veröffentlicht durch die Direction der Braunschweigischen Eisenbahn-Gesellschaft. Jahrgang 1851
titleType: AlternativeTitle
Creators: name: :None
Publisher: name: Vieweg
Year: 1852
Subjects: subject: Brunsvicensien der Universitätsbibliothek Braunschweig
subject: Eisenbahngeschichte
subject: 902

description: Betriebsresultate der Herzoglich Braunschweigischen Eisenbahnen / Herzoglich Braunschweig-Lüneburgische Eisenbahn- und Postdirection., vol. 1851
Additional file 1: of Re-thinking breast and cervical cancer preventive campaigns in developing countries: the case for interventions at high schools
Creators: name: Ifediora, Chris
Publisher: name: figshare
Year: 2019
Subjects: subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Cancer
subject: Science Policy
subject: Hematology

description: Suggested implementation plan and roll-out approach for introducing anti-breast and cervical teachings into the curriculum of Nigerian high schools. This material presents a proposed intervention template for the recommendations of this paper. It covers the aims and objectives, as well as an outline of a potential step-by-step implementation and the composition of a likely stakeholder committee. (DOCX 23â kb)
On the constants for some Sobolev imbeddings
Creators: name: Morosi, C.
name: Pizzocchero, L.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Functional Analysis (math.FA)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: We consider the imbedding inequality || f ||_{L^r(R^d)} <= S_{r,n,d} || f ||_{H^{n}(R^d)}; H^{n}(R^d) is the Sobolev space (or Bessel potential space) of L^2 type and (integer or fractional) order n. We write down upper bounds for the constants S_{r, n, d}, using an argument previously applied in the literature in particular cases. We prove that the upper bounds computed in this way are in fact the sharp constants if (r=2 or) n > d/2, r=infinity, and exhibit the maximising functions. Furthermore, using convenient trial functions, we derive lower bounds on S_{r,n,d} for n > d/2, 2 < r < infinity; in many cases these are close to the previous upper bounds, as illustrated by a number of examples, thus characterizing the sharp constants with little uncertainty.
description: 12 pages, to appear in the Journal of Inequalities and Applications
title: Betriebsresultate der Herzoglich Braunschweigischen Eisenbahnen / Herzoglich Braunschweig-Lüneburgische Eisenbahn- und Postdirection. Jahrgang 1853
title: Betriebsresultate der Braunschweigischen Eisenbahnen / veröffentlicht durch die Direction der Braunschweigischen Eisenbahn-Gesellschaft. Jahrgang 1853
titleType: AlternativeTitle
Creators: name: :None
Publisher: name: Vieweg
Year: 1854
Subjects: subject: Brunsvicensien der Universitätsbibliothek Braunschweig
subject: Eisenbahngeschichte
subject: 902

description: Betriebsresultate der Herzoglich Braunschweigischen Eisenbahnen / Herzoglich Braunschweig-Lüneburgische Eisenbahn- und Postdirection., vol. 1853
Strings as perturbations of evolving spin-networks
Creators: name: Smolin, Lee
Publisher: name: arXiv
Year: 1998
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: A connection between non-perturbative formulations of quantum gravity and perturbative string theory is exhibited, based on a formulation of the non-perturbative dynamics due to Markopoulou. In this formulation the dynamics of spin network states and their generalizations is described in terms of histories which have discrete analogues of the causal structure and many fingered time of Lorentzian spacetimes. Perturbations of these histories turn out to be described in terms of spin systems defined on 2-dimensional timelike surfaces embedded in the discrete spacetime. When the history has a classical limit which is Minkowski spacetime, the action of the perturbation theory is given to leading order by the spacetime area of the surface, as in bosonic string theory. This map between a non-perturbative formulation of quantum gravity and a 1+1 dimensional theory generalizes to a large class of theories in which the group SU(2) is extended to any quantum group or supergroup. It is argued that a necessary condition for the non-perturbative theory to have a good classical limit is that the resulting 1+1 dimensional theory defines a consistent and stable perturbative string theory.
description: Latex, 18 pages, no figures
title: Betriebsresultate der Herzoglich Braunschweigischen Eisenbahnen / Herzoglich Braunschweig-Lüneburgische Eisenbahn- und Postdirection. Jahrgang 1860
title: Betriebsresultate der Braunschweigischen Eisenbahnen / veröffentlicht durch die Direction der Braunschweigischen Eisenbahn-Gesellschaft. Jahrgang 1860
titleType: AlternativeTitle
Creators: name: :None
Publisher: name: Vieweg
Year: 1861
Subjects: subject: Brunsvicensien der Universitätsbibliothek Braunschweig
subject: Eisenbahngeschichte
subject: 902

description: Betriebsresultate der Herzoglich Braunschweigischen Eisenbahnen / Herzoglich Braunschweig-Lüneburgische Eisenbahn- und Postdirection., vol. 1860
title: Betriebsresultate der Herzoglich Braunschweigischen Eisenbahnen / Herzoglich Braunschweig-Lüneburgische Eisenbahn- und Postdirection. Jahrgang 1863
title: Betriebsresultate der Braunschweigischen Eisenbahnen / veröffentlicht durch die Direction der Braunschweigischen Eisenbahn-Gesellschaft. Jahrgang 1863
titleType: AlternativeTitle
Creators: name: :None
Publisher: name: Vieweg
Year: 1864
Subjects: subject: Brunsvicensien der Universitätsbibliothek Braunschweig
subject: Eisenbahngeschichte
subject: 902

description: Betriebsresultate der Herzoglich Braunschweigischen Eisenbahnen / Herzoglich Braunschweig-Lüneburgische Eisenbahn- und Postdirection., vol. 1863
Invariant compact finite difference schemes
Creators: name: Ozbenli, Ersin
name: Vedula, Prakash
Publisher: name: arXiv
Year: 2019
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: In this paper, we propose a method, that is based on equivariant moving frames, for development of high order accurate invariant compact finite difference schemes that preserve Lie symmetries of underlying partial differential equations. In this method, variable transformations that are obtained from the extended symmetry groups of PDEs are used to transform independent and dependent variables, and derivative terms of compact finite difference schemes (constructed for these PDEs) such that the resulting schemes are invariant under the chosen symmetry groups. The unknown symmetry parameters that arise from the application of these transformations are determined through selection of convenient moving frames. In some cases, owing to selection of convenient moving frames, numerical representation of invariant (or symmetry preserving) compact numerical schemes, that are developed through the proposed method, are found to be notably simpler than that of standard, noninvariant compact numerical schemes. Further, the order of accuracy of these invariant compact schemes can be arbitrarily set to a desired order by considering suitable compact finite difference algorithms. Application of the proposed method is demonstrated through construction of invariant compact finite difference schemes for some common linear and nonlinear PDEs (including the linear advection-diffusion equation in 1D/2D, the inviscid and viscous Burgers' equations in 1D). Results obtained from our numerical simulations indicate that invariant compact finite difference schemes not only inherit selected symmetry properties of underlying PDEs, but are also comparably more accurate than the standard, non-invariant base numerical schemes considered here.
Uncertainty reconciles complementarity with joint measurability
Creators: name: Busch, P.
name: Shilladay, C. R.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The fundamental principles of complementarity and uncertainty are shown to be related to the possibility of joint unsharp measurements of pairs of noncommuting quantum observables. A new joint measurement scheme for complementary observables is proposed. The measured observables are represented as positive operator valued measures (POVMs), whose intrinsic fuzziness parameters are found to satisfy an intriguing pay-off relation reflecting the complementarity. At the same time, this relation represents an instance of a Heisenberg uncertainty relation for measurement imprecisions. A model-independent consideration show that this uncertainty relation is logically connected with the joint measurability of the POVMs in question.
description: 4 pages, RevTeX. Title of previous version: "Complementarity and uncertainty - entangled in joint path-interference measurements". This new version focuses on the "measurement uncertainty relation" and its role, disentangling this issue from the special context of path interference duality. See also http://www.vjquantuminfo.org (October 2003)
Using interspecies biological networks to guide drug therapy
Creators: Jacunski, Alexandra
Publisher: name: Columbia University
Year: 2017
Subjects: subject: Bioinformatics
subject: FOS: Computer and information sciences
subject: Combination drug therapy
subject: Drug interactions

description: The use of drug combinations (DCs) in cancer therapy can prevent the development of drug resistance and decrease the severity and number of side effects. Synthetic lethality (SL), a genetic interaction wherein two nonessential genes cause cell death when knocked out simultaneously, has been suggested as a method of identifying novel DCs. A combination of two drugs that mimic genetic knockout may cause cellular death through a synthetic lethal pathway. Because SL can be context-specific, it may be possible to find DCs that target SL pairs in tumours while leaving healthy cells unscathed.
      However, elucidating all synthetic lethal pairs in humans would take more than 200 million experiments in a single biological context – an unmanageably large search space. It is thus necessary to develop computational methods to predict human SL.
      In this thesis, we develop connectivity homology, a novel measure of network similarity that allows for the comparison of interspecies protein-protein interaction networks. We then use this principle to develop Species-INdependent TRAnslation (SINaTRA), an algorithm that allows us to predict SL between species using protein-protein interaction networks. We validate it by predicting SL in S. pombe from S. cerevisiae, then generate over 100 million SINaTRA scores for putative human SL pairs. We use these data to predict new areas of cancer combination therapy, and then test fifteen of these predictions across several cell lines. Finally, in order to better understand synergy, we develop DAVISS (Data-driven Assessment of Variability In Synergy Scores), a novel way to statistically evaluate the significance of a drug interaction.
Using machine learning to predict gene expression and discover sequence motifs
Creators: Li, Xuejing
Publisher: name: Columbia University
Year: 2012
Subjects: Machine learning
Gene expression
Algorithms
Computer simulation

description: Recently, large amounts of experimental data for complex biological systems have become available. We use tools and algorithms from machine learning to build data-driven predictive models. We first present a novel algorithm to discover gene sequence motifs associated with temporal expression patterns of genes. Our algorithm, which is based on partial least squares (PLS) regression, is able to directly model the  flow of information, from gene sequence to gene expression, to learn cis regulatory motifs and characterize associated gene expression patterns. Our algorithm outperforms traditional computational methods e.g. clustering in motif discovery. We then present a study of extending a machine learning model for transcriptional regulation predictive of genetic regulatory response to Caenorhabditis elegans. We show meaningful results both in terms of prediction accuracy on the test experiments and biological information extracted from the regulatory program. The model discovers DNA binding sites ab intio. We also present a case study where we detect a signal of lineage-specific regulation. Finally we present a comparative study on learning predictive models for motif discovery, based on different boosting algorithms: Adaptive Boosting (AdaBoost), Linear Programming Boosting (LPBoost) and Totally Corrective Boosting (TotalBoost). We evaluate and compare the performance of the three boosting algorithms via both statistical and biological validation, for hypoxia response in Saccharomyces cerevisiae.
On the possibility to study antiproton production at the SPD detector at NICA collider for dark matter search in astrophysical experiments
Creators: name: Guskov, A.
name: El-Kholy, R.
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Dark matter is an important component of the Standard model of cosmology but its nature is still unknown. One of the most common explanations is that dark matter consists of Weakly Interacting Massive Particles (WIMPs), supposed to be cold thermal relics of the Big Bang and to build up the galactic dark halos. Indirect search of dark matter could be performed via the study of an anomalous antiproton component in cosmic rays originating from possible annihilation of dark matter pairs in the galactic halo, on top of the standard astrophysical production. The measurements performed by the AMS-02 and PAMELA spectrometers have shown that limited knowledge of antiproton-production cross sections in $pp$, $pD$, $pHe$ and $HeHe$ collisions is one of the main uncertainties of background subtraction. The planned SPD experiment at the NICA collider could provide a precision measurement of antiproton yield in wide kinematic range in $pp$ and $pD$ collisions at the energy scale from the threshold to $\sqrt{s}=26$ GeV/$c$.
Energy Savings & GHG Reductions through behavior change programs
Creators: name: Pawar, Monish
Publisher: name: The University of British Columbia
Year: 2016

description: Behavior Change Program has been one of the most powerful tools to achieve significant energy savings in any organisation or institution. To meet the goals of Climate Action Plan 2020, UBC has defined potential areas for implementation of behavior change programs as one of the initiatives that would deepen the sustainability culture on campus. To develop an effective behavior change program, creating an energy model that would unravel GHG reductions as well as associated energy savings was the first step to march ahead in this direction. Hence, regular weekly meetings have been conducted from February-2016 to May-2016 with all the stake holders of the project in order to come up with a model that would act as a guide while forming a strategy for campus wide behavior change programs. Student Residences, Offices and Labs are the primary locations where this study was targeted. Members of SEEDS, Sustainability & Engineering, Green Labs, Building Engineers, Risk Management Services (RMS) and Energy & Water Services (EWS) have been kind enough to co-operate and provide necessary data/information for the advancement of this energy model at various stages. Detailed Recommendations are given at the end of every section of the report that would assist in aligning the planning and implementation of the behavior change program in near future. Disclaimer: “UBC SEEDS provides students with the opportunity to share the findings of their studies, as well as their opinions, conclusions and recommendations with the UBC community. The reader should bear in mind that this is a student project/report and is not an official document of UBC. Furthermore readers should bear in mind that these reports may not reflect the current status of activities at UBC. We urge you to contact the research persons mentioned in a report or the SEEDS Coordinator about the current status of the subject matter of a project/report.”
Additional file 1: of Change in psychosocial factors connected to coping after inpatient treatment for substance use disorder: a systematic review
Creators: name: Johannessen, Dagny
name: NordfjĂŚrn, Trond
name: Geirdal, Amy
Publisher: name: figshare
Year: 2019
Subjects: subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Text words used in the systematic search. (PDF 64 kb)