cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Gravitational Waves in Brans-Dicke Theory : Analysis by Test Particles around a Kerr Black Hole
Creators: name: Saijo, Motoyuki
name: Shinkai, Hisa-aki
name: Maeda, Kei-ichi
Publisher: name: arXiv
Year: 1997
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Analyzing test particles falling into a Kerr black hole, we study gravitational waves in Brans-Dicke theory of gravity. First we consider a test particle plunging with a constant azimuthal angle into a rotating black hole and calculate the waveform and emitted energy of both scalar and tensor modes of gravitational radiation. We find that the waveform as well as the energy of the scalar gravitational waves weakly depends on the rotation parameter of black hole $a$ and on the azimuthal angle. Secondly, using a model of a non-spherical dust shell of test particles falling into a Kerr black hole, we study when the scalar modes dominate. When a black hole is rotating, the tensor modes do not vanish even for a ``spherically symmetric" shell, instead a slightly oblate shell minimizes their energy but with non-zero finite value, which depends on Kerr parameter $a$. As a result, we find that the scalar modes dominate only for highly spherical collapse, but they never exceed the tensor modes unless the Brans-Dicke parameter $ω_{BD} \lsim 750 $ for $a/M=0.99$ or unless $ω_{BD} \lsim 20,000 $ for $a/M=0.5$, where $M$ is mass of black hole. We conclude that the scalar gravitational waves with $ω_{BD} \lsim$ several thousands do not dominate except for very limited situations (observation from the face-on direction of a test particle falling into a Schwarzschild black hole or highly spherical dust shell collapse into a Kerr black hole). Therefore observation of polarization is also required when we determine the theory of gravity by the observation of gravitational waves.
description: 24 pages, revtex, 18 figures are attached with ps files
Perilous Pedagogies: Women's Education and Epistolarity from Rousseau to Charrière
Creators: Raillard, Sarah-Louise
Publisher: name: Columbia University
Year: 2011
Subjects: Literature
Romance literature

description: This dissertation looks at the thematic and narrative tensions that emerge when certain prominent late eighteenth-century French epistolary novels deal with the issue of women's education and the possibility of its reform.  The debate of the latter half of the century is firmly centered on Rousseau, who wrote both a best-selling epistolary novel dealing with the position of women in society (Julie, ou la Nouvelle HéloÃ¯se) and a controversial pedagogical treatise that suggests sweeping changes to male education but decisively anchors women within a limited domestic sphere (Émile).  More specifically, I have examined the ways in which Rousseau's contradictory and problematic discussion of female pedagogy enacts narrative structures of tension and hesitation within both the treatise and the epistolary novel.  Both texts, as well as the unfinished epistolary sequel Émile et Sophie, ou Les solitaires are destabilized by the fraught question of how to educate women. The contradictions engendered by attempts to maintain strict gender difference also plague Laclos' pedagogical treatises and his epistolary novel Les Liaisons dangereuses, which simultaneously offer revolution, reform, and rejection of female education.  The Marquis de Sade subsequently approaches this topic with humor, choosing to imitate the excesses of Enlightenment discourse on female pedagogy, in turn creating a potentially instructive parody of his own.  Finally, Isabelle de Charrière ponders the topic of women's education in a variety of non-fiction and literary works, which all reveal her cautious strategies of disguise and ambivalence when addressing such a hotly debated issue, especially from the point of view of a woman writer.  Examining both the theoretical and fictional works of Rousseau, Laclos, Sade, and Charrière, I prove that the convergence of epistolarity and female pedagogy was far from accidental, and that the tensions inherent in Enlightenment thought on gender are in fact mirrored in the narrative permutations and problematics of the epistolary novel.
Generation of ice states through deep reinforcement learning
Creators: name: Zhao, Kai-Wen
name: Kao, Wen-Han
name: Wu, Kai-Hsin
name: Kao, Ying-Jer
Publisher: name: arXiv
Year: 2019
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We present a deep reinforcement learning framework where a machine agent is trained to search for a policy to generate a ground state for the square ice model by exploring the physical environment. After training, the agent is capable of proposing a sequence of local moves to achieve the goal. Analysis of the trained policy and the state value function indicates that the ice rule and loop-closing condition are learned without prior knowledge. We test the trained policy as a sampler in the Markov chain Monte Carlo and benchmark against the baseline loop algorithm. This framework can be generalized to other models with topological constraints where generation of constraint-preserving states is difficult.
description: 10 pages, 13 figures, 2 tables. Published version
Parliamentary questions as a control mechanism in coalition governments
Creators: name: Höhmann, Daniel
name: Sieberer, Ulrich
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Medicine
subject: Neuroscience
subject: Physiology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: Developmental Biology
subject: Cancer
subject: 111714 Mental Health
subject: FOS: Health sciences

description: This article argues that government parties can use parliamentary questions to monitor coalition partners in order to reduce agency loss through ministerial drift. According to this control logic, government parties have particular incentives to question ministers whose jurisdictions display high policy conflict and high electoral salience and thus hold the prospect of electorally damaging ministerial drift. Multivariate regression analysis of all parliamentary questions in the German Bundestag between 1980 and 2017 supports this hypothesis, showing that cabinet parties address substantially and significantly more questions to ministries held by coalition partners on salient and ideologically divisive issues. This interactive effect does not occur for opposition parties or questions posed to own-party ministers. These findings, as well as the temporal patterns of questioning over the electoral cycle, indicate that control within coalitions is a distinct motivation for questioning ministers that cannot be reduced to existing explanations such as electorally motivated issue competition.
Critical scaling for yield is independent from distance to isostaticity
Creators: name: Thompson, Jacob D.
name: Clark, Abram H.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Using discrete element simulations, we demonstrate that critical behavior for yielding in soft disk and sphere packings is independent of distance to isostaticity over a wide range of dimensionless pressures. Jammed states are explored via quasistatic shear at fixed pressure, and the statistics of the dimensionless shear stress $μ$ of these states obey a scaling description with diverging length scale $ξ\propto |μ-μ_c|^{-ν}$. The critical scaling functions and values of the scaling exponents are nearly independent of distance to isostaticity despite the large range of pressures studied. Our results demonstrate that yielding of jammed systems represents a distinct nonequilibrium critical transition from the isostatic critical transition which has been demonstrated by previous studies. Our results may also be useful in deriving nonlocal rheological descriptions of granular materials, foams, emulsions, and other soft particulate materials.
Análisis Paleoambientales de Paleosuleos del Ahu Hati te Kohe en la Península de Poike [Rapa Nui], 2017–18
Creators: name: SCAIFE, Rob
name: FRENCH, Charles
Publisher: name: UCL Rapa Nui Landscapes of Construction Project
Year: 2019
Subjects: Rapa Nui
Easter Island
Isla de Pascua
ahu
Poike
pollen analysis
análisis paleoambientales
análisis de polen
análisis de micromorfología de suelo
análisis de polen de paleosuelos
UCL Rapa Nui Landscapes of Construction Project

description: [Spanish description pending]

This paper outlines the results of palynological and micromorphological analyses conducted on palaeosoils sampled beneath and in the vicinity of Ahu Hati te Kohe on the Poike Peninsula, Rapa Nui (Easter Island). A range of palaeoenvironmental materials are identified, including several prehistoric palms (represented by both pollen and phytoliths), ferns (represented by spores) and previously unidentified fungal/ mould spores. The principal conclusion of importance to our understanding of Rapa Nui Landscapes of Constuction is that the ahu was constructed in a clearing in the palm forest.
Ophraella Wilcox 1965
Creators: name: Viswajyothi, Keezhpattillam
name: Clark, Shawn M.
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Chrysomelidae
Ophraella

description: Genus Ophraella Wilcox, 1965
Ophraella Wilcox, 1965: 43
(type species Galleruca notata Fabricius, 1801, by original designation).
Remarks
This genus contains 14 described species, occurring from Canada to Mexico. See Figs 37–39 for habitus illustrations. See LeSage (1986) for a key to the species. However, realize that two additional species have been named subsequent to that key (Futuyma 1990, 1991). Another species, O. godmani (Jacoby, 1886), occurring in Mexico and Guatemala, is also included in the genus, but this generic placement is extremely questionable. Several South American species have also been included in the genus (Bechyné 1997), but we also doubt this placement.
description: Published as part of Viswajyothi, Keezhpattillam & Clark, Shawn M., 2022, New World genera of Galerucinae Latreille, 1802 (tribes Galerucini Latreille, 1802, Metacyclini Chapuis, 1875, and Luperini Gistel, 1848): an annotated list and identification key (Coleoptera: Chrysomelidae), pp. 1-102 in European Journal of Taxonomy 842 on page 11, DOI: 10.5852/ejt.2022.842.1945, http://zenodo.org/record/7222499
Tools for assessing soil metal bio-availability
Creators: name: Doram, Dale
Publisher: name: The University of British Columbia
Year: 2010

description: Metals or trace elements are natural constituents and occur throughout the biosphere. While metals or trace elements are naturally present in our environment, in some instances they are elevated above provincial or federal generic soil quality guidelines due to industrial processes like air emissions. Theoretically, elevated soil metal concentrations above generic guidelines mean there could be potential local impacts to terrestrial or aquatic receptors. Since generic regulatory guidelines are derived by analyzing “total” soil metals using strong acid digests, they do not consider the chemical form and bio-availability of the specific metals on a site-specific basis. Using case studies and the literature, the limitations of using generic soil metal guidelines to assess site-specific receptor impacts will be discussed. Two tools for evaluating metal bio-availability, sequential extraction and bio-assays, are discussed. These tools can be used in setting site-specific remediation objectives for a site that exceeds generic regulatory criteria.
Detection of radiation torque exerted on an alkali-metal vapor cell
Creators: name: Hatakeyama, Atsushi
name: Yasuda, Runa
name: Goto, Yutaka
name: Chikakiyo, Natsumi
name: Kuroda, Takahiro
name: Nagata, Yugo
Publisher: name: arXiv
Year: 2019
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Other Condensed Matter (cond-mat.other)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We have developed a torsion balance to detect the rotation of a cell containing spin-polarized gaseous atoms to study angular momentum transfer from gaseous atoms to solid. A cesium vapor cell was hung from a thin wire in a vacuum chamber, and irradiated from the bottom with circularly polarized light tuned to the $D_2$ transition to polarize cesium atoms in the cell. By varying the light helicity at the resonance frequency of the torsion balance, we induced forced rotational oscillation of the cell and detected radiation torque exerted on the cesium vapor cell through the cesium atoms inside. The torque was particularly large when both hyperfine levels of cesium atoms were optically pumped with application of a longitudinal magnetic field. Further detailed study will provide new insights into spin-transfer processes at the gas-solid interface.
description: 11 pages, 4 figures; v2: 12 pages, 4 figures. Corrected for a typo in Fig.2(a) in the journal version. Figures 3 and 4 were revised from v1. Some comments and references were also added to v1
An RF Circuit Model for Carbon Nanotubes
Creators: name: Burke, P. J.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We develop an rf circuit model for single walled carbon nanotubes for both dc and capacitively contacted geometries. By modeling the nanotube as a nano-transmission line with distributed kinetic and magnetic inductance as well as distributed quantum and electrostatic capacitance, we calculate the complex, frequency dependent impedance for a variety of measurement geometries. Exciting voltage waves on the nano-transmission line is equivalent to directly exciting the yet-to-be observed one dimensional plasmons, the low energy excitation of a Luttinger liquid.
description: 4 pages, 4 figures. To be published in the proceedings of IEEE-NANO 2002
Angraecum conchiferum Lindl.
Creators: name: Zhou, Ya-Dong
name: Mwachala, Geoffrey
name: Hu, Guang-Wan
name: Wang, Qing-Feng
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Liliopsida
Asparagales
Orchidaceae
Angraecum
Angraecum conchiferum

description: Angraecum conchiferum Lindl.  —
Habit: Herb.
Habitat: LMWF; up to 2 500 m. Distribution: II.
 Voucher: South Mount Kenya Forest, Alt. 2 134 m, 1 Jan. 1967, Archer 549 (EA).
References: Stewart & Campbell (2003), Agnew (2013).
description: Published as part of Zhou, Ya-Dong, Mwachala, Geoffrey, Hu, Guang-Wan & Wang, Qing-Feng, 2022, Annotated checklist of the vascular plants of Mount Kenya, East Africa, pp. 1-108 in Phytotaxa 546 (1) on page 25, DOI: 10.11646/phytotaxa.546.1.1, http://zenodo.org/record/6550464
Statistical Hair on Black Holes
Creators: name: Strominger, Andrew
Publisher: name: arXiv
Year: 1996
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The Bekenstein-Hawking entropy for certain BPS-saturated black holes in string theory has recently been derived by counting internal black hole microstates at weak coupling. We argue that the black hole microstate can be measured by interference experiments even in the strong coupling region where there is clearly an event horizon. Extracting information which is naively behind the event horizon is possible due to the existence of statistical quantum hair carried by the black hole. This quantum hair arises from the arbitrarily large number of discrete gauge symmetries present in string theory.
description: 11 pages, harvmac, minor additions
Few-boson localization in a continuum with speckle disorder
Creators: name: Mujal, Pere
name: Polls, Artur
name: Pilati, Sebastiano
name: Juliá-Díaz, Bruno
Publisher: name: arXiv
Year: 2019
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The disorder-induced localization of few bosons interacting via a contact potential is investigated through the analysis of the level-spacing statistics familiar from random matrix theory. The model we consider is defined in a continuum and describes one-dimensional bosonic atoms exposed to the spatially correlated disorder due to an optical speckle field. % First, we identify the speckle-field intensity required to observe, in the single-particle case, the Poisson level-spacing statistics, which is characteristic of localized quantum systems, in a computationally and experimentally feasible system size. Then, we analyze the two-body and the three-body systems, exploring a broad interaction range, from the noninteracting limit up to moderately strong interactions. Our main result is that the contact potential does not induce a shift towards the Wigner-Dyson level-spacing statistics, which would indicate the emergence of an ergodic chaotic state, indicating that localization can occur also in interacting few-body systems in a continuum. We also analyze how the ground-state energy evolves as a function of the interaction strength
description: revised version
Period, Interrupted: An Intervention in PMS and Menstruation Discourse
Creators: Bufanio, Nicole N.
Publisher: name: Columbia University
Year: 2006
Subjects: Women's studies
Menstruation
Premenstrual syndrome
Menstruation--Social aspects
Women--Health and hygiene

description: In this thesis, I argue that women need the myths surrounding menstruation to be debunked and replaced by factual information about their bodies and selves. Put simply, menstruation is a biological process that happens to women all over the globe. PMS is a "syndrome," not a biological process, that is defined as a mental, emotional, and physical disorder linked to menstruation. My thesis highlights the need to bridge the gap between two concepts seemingly at right-angles to one another: on the one hand, there is an extensive feminist critique of PMS discourse as damaging and PMS itself as socially constructed. On the other hand, there is a compelling reality of women's subjective, embodied experience of menstruation including those women who suffer from PMS. "PMS" was once considered a semi- or pseudo-clinical term applied to the experience of changes leading up to menstruation--a medically and scientifically correct term. Now, PMS has grown two legs: it is "medically" manifested in Premenstrual Dysphoric Disorder (PMDD), the mental/emotional leg of PMS, and on the other leg exists dysmennorhea, which accounts for the physical dysfunction connected with menstruation. The older, broader term "PMS" is now only a cultural concept and phenomenon, which makes it exceedingly more difficult to understand the material impact of this acronym on American women. Where exactly did these ideas come from and how have they been reinforced? Furthermore, is there a way to interrupt this process of knowing what it means to be a PMS-suffering woman?
Experimental study of tribological and mechanical properties of aluminum matrix reinforced by Al2O3/CNTs
Creators: name: Zayed, Ahmed Sh.
name: Bahaa M. Kamel
name: Osman, Tarek Abdelsadek
name: Omayma A. Elkady
name: Ali, Shady
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Space Science
subject: Medicine
subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology

description: In recent years, since the discovery of Nano-additives especially carbon nanotubes (CNTs) and graphene, many interesting articles on composites with CNTs have been studied. CNTs have attracted considerable interest in all fields of science because of its unique characteristics. In this study, aluminum (Al) matrix reinforcement by the different volume fraction of Al2O3 and CNTs composites have been manufactured by using a powder metallurgy technique. The effects of tribological behaviors, density, hardness, and compression strength behavior of aluminum matrix Nano-composite were investigated before and after Hot Isostatic pressing (HIP). Transmission Electron Microscopy (TEM) and Scanning Electron Microscope (SEM) were employed to check the CNTs and hybrid composites. Results show that the density of nanocomposites decreased by 38% but after HIP, the density decreased by 45%. In addition, the hardness enhanced by 40% but, after HIP the hardness became 67%. On the other side, the compressive strength enhanced by 38% and 60% before and after HIP respectively. The coefficient of friction of nanocomposites are improved by 39%, 48% with HIP and without HIP while the wear rates improved by the addition of Al2O3 and CNTs at all volume fraction by 20%, but after HIP the enhancement became 45% at all volume concentration.
Cosmic censorship and spherical gravitational collapse with tangential pressure
Creators: name: Singh, T. P.
name: Witten, Louis
Publisher: name: arXiv
Year: 1997
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study the spherical gravitational collapse of a compact object under the approximation that the radial pressure is identically zero, and the tangential pressure is related to the density by a linear equation of state. It turns out that the Einstein equations can be reduced to the solution of an integral for the evolution of the area radius. We show that for positive pressure there is a finite region near the center which necessarily expands outwards, if collapse begins from rest. This region could be surrounded by an inward moving one which could collapse to a singularity - any such singularity will necessarily be covered by a horizon. For negative pressure the entire object collapses inwards, but any singularities that could arise are not naked. Thus the nature of the evolution is very different from that of dust, even when the ratio of pressure to density is infinitesimally small.
description: 16 pages, Latex file, two figures, uses epsf.sty
Search for production of an invisible dark photon in $π^0$ decays
Creators: name: NA62 Collaboration
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The results of a search for $π^0$ decays to a photon and an invisible massive dark photon at the NA62 experiment at the CERN SPS are reported. From a total of $4.12\times10^8$ tagged $π^0$ mesons, no signal is observed. Assuming a kinetic-mixing interaction, limits are set on the dark photon coupling to the ordinary photon as a function of the dark photon mass, improving on previous searches in the mass range 60--110 MeV/$c^2$. The present results are interpreted in terms of an upper limit of the branching ratio of the electro-weak decay $π^0 \to γν\overlineν$, improving the current limit by more than three orders of magnitude.
MODERN APPROACH TO TEACHING PHYSICAL AND COLLOIDAL CHEMISTRY AT UNIVERSITY
Creators: name: Ruziev I.Kh., Samarkand State University named after. Sh. Rashidova. Samarkand city,The Republic of Uzbekistan
name: Mukhamadiev A.N., Samarkand State University named after. Sh. Rashidova. Samarkand city,The Republic of Uzbekistan
name: Kuldosheva L.S., Samarkand State University named after. Sh. Rashidova. Samarkand city,The Republic of Uzbekistan
name: Abduraimova Z.Zh., Samarkand State University named after. Sh. Rashidova. Samarkand city,The Republic of Uzbekistan
Publisher: name: Zenodo
Year: 2024

description: This  article  explores  modern  methods  of  teaching  physical  and colloidal chemistry in higher education. Innovative approaches aimed at increasing the  effectiveness  of  learning  and  active  interaction  of  students  with  educational material are highlighted. Methods are considered that promote the development of critical  thinking,  the  practical  application  of  theoretical  knowledge  and  the formation of skills in physical and colloidal chemistry. Attention is paid to the use of  modern  educational  technologies,  interactive  forms  of  learning  and  student collaboration in the educational process.
Periodic Little's law
Creators: Zhang, Xiaopei
Publisher: name: Columbia University
Year: 2019
Subjects: Operations research
Industrial engineering
Queuing theory
Central limit theorem
Stochastic analysis

description: In this dissertation, we develop the theory of the periodic Little's law (PLL) as well as discussing one of its applications. As extensions of the famous Little's law, the PLL applies to the queueing systems where the underlying processes are strictly or asymptotically periodic. We give a sample-path version, a steady-state stochastic version and a central-limit-theorem version of the PLL in the first part. We also discuss closely related issues such as sufficient conditions for the central-limit-theorem version of the PLL and the weak convergence in countably infinite dimensional vector space which is unconventional in queueing theory.
      The PLL provides a way to estimate the occupancy level indirectly. We show how to construct a real-time predictor for the occupancy level inspired by the PLL as an example of its applications, which has better forecasting performance than the direct estimators.
Enhancement of the critical current density and flux pinning of MgB2 superconductor by nanoparticle SiC doping
Creators: name: Dou, S. X.
name: Soltanian, S.
name: Horvat, J.
name: Wang, X. L.
name: Munroe, P.
name: Zhou, S. H.
name: Ionescu, M.
name: Liu, H. K.
name: Tomsic, M.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Doping of MgB2 by nano-SiC and its potential for improvement of flux pinning was studied for MgB2-x(SiC)x/2 with x = 0, 0.2 and 0.3 and a 10wt% nano-SiC doped MgB2 samples. Co-substitution of B by Si and C counterbalanced the effects of single-element doping, decreasing Tc by only 1.5K, introducing pinning centres effective at high fields and temperatures and enhancing Jc and Hirr significantly. Compared to the non-doped sample, Jc for the 10wt% doped sample increased by a factor of 32 at 5K and 8T, 42 at 20K and 5T, and 14 at 30K and 2T. At 20K, which is considered to be a benchmark operating temperature for MgB2, the best Jc for the doped sample was 2.4x10^5A/cm2 at 2T, which is comparable to Jc of the best Ag/Bi-2223 tapes. At 20K and 4T, Jc was 36,000A/cm2, which was twice as high as for the best MgB2 thin films and an order of magnitude higher than for the best Fe/MgB2 tapes. Because of such high performance, it is anticipated that the future MgB2 conductors will be made using the formula of MgBxSiyCz instead of the pure MgB2.
Proportionally dense subgraph of maximum size: complexity and approximation
Creators: name: Bazgan, Cristina
name: Chlebíková, Janka
name: Dallard, Clément
name: Pontoizeau, Thomas
Publisher: name: arXiv
Year: 2019
Subjects: subject: Computational Complexity (cs.CC)
subject: Discrete Mathematics (cs.DM)
subject: Data Structures and Algorithms (cs.DS)
subject: FOS: Computer and information sciences

description: We define a proportionally dense subgraph (PDS) as an induced subgraph of a graph with the property that each vertex in the PDS is adjacent to proportionally as many vertices in the subgraph as in the graph. We prove that the problem of finding a PDS of maximum size is APX-hard on split graphs, and NP-hard on bipartite graphs. We also show that deciding if a PDS is inclusion-wise maximal is co-NP-complete on bipartite graphs. Nevertheless, we present a simple polynomial-time $(2-\frac{2}{Δ+1})$-approximation algorithm for the problem, where $Δ$ is the maximum degree of the graph. Finally, we show that all Hamiltonian cubic graphs with $n$ vertices (except two) have a PDS of size $\lfloor \frac{2n+1}{3} \rfloor$, which we prove to be an upper bound on the size of a PDS in cubic graphs.
Developing the guidelines for reclamation to forest vegetation in the Athabasca oil sands region
Creators: name: Straker, Justin
name: Donald, Gillian
Publisher: name: The University of British Columbia
Year: 2010

description: In 1996, the Oil Sands Vegetation Reclamation Committee was formed to prepare guidelines on the establishment of forest vegetation and ecosystems, with an emphasis on providing appropriate “starter vegetation” for use in reclaiming oil sands leases in northeastern Alberta. The outcome of this process, the first edition of the Guidelines for Reclamation to Forest Vegetation in the Athabasca Oil Sands Region (referred to as the Revegetation Manual), was released in 1998. The task of updating this manual currently resides with the Reclamation Working Group (RWG) of the Cumulative Environmental Management Association, a multi-stakeholder non-profit organization whose members include representatives from oil sands industry, government regulatory agencies, and local communities. At the end of 2009, RWG completed the 2nd edition of the Revegetation Manual, which was published by Alberta Environment in 2010. Use of this manual for reclamation of upland ecosystems by oil sands mining companies is mandated by their operating approvals under the Alberta Environmental Protection and Enhancement Act. Thus this manual and its successors will inform revegetation activities on over approximately 30,000 ha of current disturbed footprint, and eventually as much as ~200,000 ha of mine-related disturbance.
Angraecum decipiens Summerh.
Creators: name: Zhou, Ya-Dong
name: Mwachala, Geoffrey
name: Hu, Guang-Wan
name: Wang, Qing-Feng
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Liliopsida
Asparagales
Orchidaceae
Angraecum
Angraecum decipiens

description: Angraecum decipiens Summerh.  —
Habit: Herb.
Habitat: LMWF, LMDF; 1 600–2 100 m. Distribution: IIIa.
Voucher: N/A.
Reference: Stewart & Campbell (2003).
description: Published as part of Zhou, Ya-Dong, Mwachala, Geoffrey, Hu, Guang-Wan & Wang, Qing-Feng, 2022, Annotated checklist of the vascular plants of Mount Kenya, East Africa, pp. 1-108 in Phytotaxa 546 (1) on page 25, DOI: 10.11646/phytotaxa.546.1.1, http://zenodo.org/record/6550464
The Policy Consequences of Information: Three Essays on Being (Un)Informed
Creators: name: Hagmann, David
Publisher: name: Carnegie Mellon University
Year: 2019
Subjects: subject: 220302 Decision Theory
subject: FOS: Philosophy, ethics and religion

description: Information in economics is viewed as desirable to the extent that it leads to better decisions. Growing evidence,however,ﬁnds that people are often motivated to avoid instrumentally useful information–and sometimes are better off for doing so. I develop and validate a scale and show that the desire to obtain and avoid information is domain-speciﬁc, stable over time, and predicts consequential behavior. One consequence of such a desire to avoid information is that some behavioral interventions, e.g. energy reports comparing one’s own use to that of neighbors, may have a hedonic cost that is not accounted for (Chapter 1). Providing information can also have a more direct policy cost. When tackling challenging societal problems like climate change, we may be motivated to provide information to citizens and policymakers about all available options. However, painless nudges, intended to be complementary policies, can come to be viewed as solutions on their own. They can then crowd-out support for more effective policies, ultimately undermining the policy objective (Chapter 2). Finally, behavioral interventions have been subject to the criticism that they are manipulative and would be ineffective if transparently disclosed. I show that, contrary to this fear, telling people that they were randomly assigned to a default option does not diminish the effectiveness of the nudge (Chapter 3).
Perle Noire: Meditations for Josephine - Aesthetics, Discussion, and Reception
Creators: Sorey, Tyshawn
Publisher: name: Columbia University
Year: 2017
Subjects: Music
Composition (Music)
Song cycles

description: This dissertation, organized in two parts, is comprised of an essay on my song cycle Perle Noire: Meditations for Josephine and its scores. Perle Noire consists of a flexible musical score that I composed for soprano Julia Bullock, select members of the International Contemporary Ensemble, and myself, with two performance editions. The primary edition, which stems from part of a production conceived of by theater director Peter Sellars, includes recited poetry about Josephine Baker by Claudia Rankine and choreography by Michael Schumacher. The second edition is a musical performance with neither poetic texts nor choreography. The world premiere of Perle Noire took place at the 2016 Ojai Music Festival in California, with subsequent performances at Lincoln Center in New York; Da Camera in Houston, Texas; and the Stony Island Arts Center in Chicago, Illinois. The entire performance of the 90-minute song cycle entails the following five recompositions and one “head arrangement” for a mixed ensemble of improviser-performers and soprano: Part I—1. Bye Bye Blackbird, 2. Sous le Ciel d’Afrique, 3. C’est ca le Vrai Bonheur and Madiana (medley); Part II—4. Si J’etais Blanche, 5. C’est Lui, 6. Terre Seche (Negro Spiritual).
      The essay centers on the compositions in Part II of Perle Noire: “Si J’etais Blanche,” “C’est Lui,” and “Terre Seche” (Negro Spiritual). To begin, I briefly discuss my aesthetic exigencies in relation to the Black creative musics initiated during the latter part of the twentieth century as well as the inspiration informing the creation of this song cycle. Next, I discuss the aforementioned songs to demonstrate how my aesthetics play out in this work. Finally, I detail the controversial critical reception of the song cycle’s world premiere performance and my response to it.
SUMCASTEC_190915_NA_BathWS_Workshop presentation_.pdf_Limoges_A. Pothier_Public_NA
Creators: name: Pothier, Arnaud
Publisher: name: Zenodo
Year: 2019

description: Presentation entitled "UHF-Dielectrophoresis crossover frequency measurements do allow discriminating cancerous stem cells from differentiated cells" for the workshop focusing on "Biomedical applications of electromagnetic energy" that was held in Bath on July 17 2019. The presentation was given by Arnaud Pothier.
Periodic symplectic cohomologies and obstructions to exact Lagrangian immersions
Creators: Zhao, Jingyu
Publisher: name: Columbia University
Year: 2016
Subjects: subject: Symplectic geometry
subject: Homology theory
subject: Mathematics
subject: FOS: Mathematics

description: Given a Liouville manifold, symplectic cohomology is defined as the Hamiltonian Floer homology for the symplectic action functional on the free loop space. In this thesis, we propose two versions of periodic S^1-equivariant homology or S^1-equivariant Tate homology for the natural S^1-action on the free loop space. The first version is called periodic symplectic cohomology. We prove that there is a localization theorem or a fix point property for periodic symplectic cohomology. The second version is called the completed periodic symplectic cohomology which satisfies Goodwillie's excision isomorphism.
         Inspired by the work of Seidel and Solomon on the existence of dilations on symplectic cohomology, we formulate the notion of Liouville manifolds admitting higher dilations using Goodwillie's excision isomorphism on the completed periodic symplectic cohomology. As an application, we derive obstructions to existence of certain exact Lagrangian immersions in Liouville manifolds admitting higher dilations.
The Emergence of the $ΔU=0$ Rule in Charm Physics
Creators: name: Grossman, Yuval
name: Schacht, Stefan
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We discuss the implications of the recent discovery of CP violation in two-body SCS $D$ decays by LHCb. We show that the result can be explained within the SM without the need for any large $SU(3)$ breaking effects. It further enables the determination of the imaginary part of the ratio of the $ΔU=0$ over $ΔU=1$ matrix elements in charm decays, which we find to be $(0.65\pm 0.12)$. Within the standard model, the result proves the non-perturbative nature of the penguin contraction of tree operators in charm decays, similar to the known non-perturbative enhancement of $ΔI=1/2$ over $ΔI=3/2$ matrix elements in kaon decays, that is, the $ΔI=1/2$ rule. As a guideline for future measurements, we show how to completely solve the most general parametrization of the $D \to P^+P^-$ system.
description: 21 pages. Some clarifications. Matches published version
Angraecum erectum Summerh.
Creators: name: Zhou, Ya-Dong
name: Mwachala, Geoffrey
name: Hu, Guang-Wan
name: Wang, Qing-Feng
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Liliopsida
Asparagales
Orchidaceae
Angraecum
Angraecum erectum

description: Angraecum erectum Summerh.  —
Habit: Herb.
Habitat: LMWF, LMDF; 1 300–2 200 m. Distribution: IIIa.
 Voucher: Chogoria Track, Alt. 1 725 m, 11 Aug. 2015, SAJIT 003983 (HIB).
Reference: Agnew (2013).
description: Published as part of Zhou, Ya-Dong, Mwachala, Geoffrey, Hu, Guang-Wan & Wang, Qing-Feng, 2022, Annotated checklist of the vascular plants of Mount Kenya, East Africa, pp. 1-108 in Phytotaxa 546 (1) on page 25, DOI: 10.11646/phytotaxa.546.1.1, http://zenodo.org/record/6550464
The string spectrum on the horizon of a non-extremal black hole
Creators: name: Russo, J. G.
Publisher: name: arXiv
Year: 1996
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We investigate the conformal string $σ$-model corresponding to a general five-dimensional non-extremal black hole solution. In the horizon region the theory reduces to an exactly solvable conformal field theory. We determine the modular invariant spectrum of physical string states, which expresses the Rindler momentum operator in terms of three charges and string oscillators. For black holes with winding and Kaluza-Klein charges, we find that states made with only right-moving excitations have ADM mass equal to the black hole ADM mass, and thus they can be used as sources of the gravitational field. A discussion on statistical entropy is included.
description: 17 pages, harvmac (minor corrections)
ANJEC report spring 2019: Vol. 39, no. 2
Creators: name: No Name Supplied
Publisher: name: No Publisher Supplied
Year: 2019

description: The Association of New Jersey Environmental Commissions is a private, non-profit educational organization serving environmental commission and open space committee members, concerned individuals, non-profits, and local officials. ANJEC’s programs aim to promote the public interest in natural resource preservation, sustainable development and reclamation and support environmental commissions and open space committees working with citizens and other non-profit organizations.
Topology of Event Horizon
Creators: name: Siino, Masaru
Publisher: name: arXiv
Year: 1997
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The topologies of event horizons are investigated. Considering the existence of the endpoint of the event horizon, it cannot be differentiable. Then there are the new possibilities of the topology of the event horizon though they are excluded in smooth event horizons. The relation between the topology of the event horizon and the endpoint of it is revealed. A torus event horizon is caused by two-dimensional endpoints. One-dimensional endpoints provide the coalescence of spherical event horizons. Moreover, these aspects can be removed by an appropriate timeslicing. The result will be useful to discuss the stability and generality of the topology of the event horizon.
description: 26 pages, revtex.sty, 6 figures, Some of assumptions and consequences are corrected and also grammatical errors are corrected
Atomic scale lattice distortions and domain wall profiles
Creators: name: Ahn, K. H.
name: Lookman, T.
name: Saxena, A.
name: Bishop, A. R.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We present an atomic scale theory of lattice distortions using strain related variables and their constraint equations. Our approach connects constrained {\it atomic length} scale variations to {\it continuum} elasticity and describes elasticity at several length scales. We apply the approach to a two-dimensional square lattice with a monatomic basis, and find the elastic deformations and hierarchical atomic relaxations in the vicinity of a domain wall between two different homogeneous strain states. We clarify the microscopic origin of gradient terms, some of which are included phenomenologically in Ginzburg-Landau theory, by showing that they are anisotropic.
description: 6 figures
Platynocera Blanchard 1842
Creators: name: Viswajyothi, Keezhpattillam
name: Clark, Shawn M.
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Cerambycidae
Platynocera

description: Genus Platynocera Blanchard, 1842
Platynocera Blanchard, 1842: 212
(type species Platynocera murina Blanchard, 1842, by monotypy). Corynocesta Bechyné, 1956a: 291
(type species Corynocesta peruviana Bechyné, 1956, by monotypy).
Remarks
This genus contains three described species, all from South America. See Figs 33, 208, and 229.
description: Published as part of Viswajyothi, Keezhpattillam & Clark, Shawn M., 2022, New World genera of Galerucinae Latreille, 1802 (tribes Galerucini Latreille, 1802, Metacyclini Chapuis, 1875, and Luperini Gistel, 1848): an annotated list and identification key (Coleoptera: Chrysomelidae), pp. 1-102 in European Journal of Taxonomy 842 on page 12, DOI: 10.5852/ejt.2022.842.1945, http://zenodo.org/record/7222499
title: Организационная структура библиотеки: формирование и эффективное функционирование
title: Монография
titleType: Subtitle
Creators: name: Мурашко О.Ю.
name:  Сидельникова Н.В.
Publisher: name: Ай Пи Ар Медиа
Year: 2020

description: В монографии рассматриваются теоретико-методологические основы теории организации, их возникновение и развитие, а также специфические свойства библиотечной организации, обогащающие спектр исследований в теории и практике организации. Комплексно представлены аспекты менеджмента библиотечно-информационной организации, связанные с изучением и практическим использованием научных подходов, которые используются в теории организации. Приводятся примеры из практики библиотек, иллюстрирующие основные теоретические положения. Описывается модель организационно-функциональной структуры библиотеки, основанная на методологии структурного анализа и проектирования (SADT). Книга адресована руководителям библиотек и структурных подразделений библиотеки, преподавателям, аспирантам и магистрантам вузов культуры, а также всем читателям, осваивающим методологию организационного проектирования.
On uniform contractions of balls in Minkowski spaces
Creators: name: Bezdek, Károly
Publisher: name: arXiv
Year: 2019
Subjects: subject: Metric Geometry (math.MG)
subject: FOS: Mathematics

description: Let $N$ balls of the same radius be given in a $d$-dimensional real normed vector space, i.e., in a Minkowski $d$-space. Then apply a uniform contraction to the centers of the $N$ balls without changing the common radius. Here a uniform contraction is a contraction where all the pairwise distances in the first set of centers are larger than all the pairwise distances in the second set of centers. The main results of this paper state that a uniform contraction of the centers does not increase (resp., decrease) the volume of the union (resp., intersection) of $N$ balls in Minkowski $d$-space, provided that $N\geq 2^d$ (resp., $N\geq 3^d$ and the unit ball of the Minkowski $d$-space is a generating set). Some improvements are presented in Euclidean spaces.
description: 9 pages
Angraecum keniae Kraenzl.
Creators: name: Zhou, Ya-Dong
name: Mwachala, Geoffrey
name: Hu, Guang-Wan
name: Wang, Qing-Feng
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Liliopsida
Asparagales
Orchidaceae
Angraecum
Angraecum keniae

description: E   Angraecum keniae Kraenzl.  —
Habit: Herb.
Habitat: N/A. Distribution: IIIc.
 Voucher: Ndoro, foot of Mount Kenya, von Hoehnel 24 (B).
Reference: Cribb (1989b).
description: Published as part of Zhou, Ya-Dong, Mwachala, Geoffrey, Hu, Guang-Wan & Wang, Qing-Feng, 2022, Annotated checklist of the vascular plants of Mount Kenya, East Africa, pp. 1-108 in Phytotaxa 546 (1) on page 25, DOI: 10.11646/phytotaxa.546.1.1, http://zenodo.org/record/6550464
Exclusion statistics,operator algebras and Fock space representations
Creators: name: Meljanac, S.
name: Milekovic, M.
name: Stojic, M.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Mathematical Physics (math-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study exclusion statistics within the second quantized approach. We consider operator algebras with positive definite Fock space and restrict them in a such a way that certain state vectors in Fock space are forbidden ab initio.We describe three characteristic examples of such exclusion, namely exclusion on the base space which is characterized by states with specific constraint on quantum numbers belonging to base space M (e.g. Calogero-Sutherland type of exclusion statistics), exclusion in the single-oscillator Fock space, where some states in single oscillator Fock space are forbidden (e.g. the Gentile realization of exclusion statistics) and a combination of these two exclusions (e.g. Green's realization of para-Fermi statistics). For these types of exclusions we discuss extended Haldane statistics parameters g, recently introduced by two of us in Mod.Phys.Lett.A 11, 3081 (1996), and associated counting rules. Within these three types of exclusions in Fock space the original Haldane exclusion statistics cannot be realized.
description: Latex,31 pages,no figures,to appear in J.Phys.A : Math.Gen
Semiclassical effects in black hole interiors
Creators: name: Hiscock, William A.
name: Larson, Shane L.
name: Anderson, Paul R.
Publisher: name: arXiv
Year: 1997
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: First-order semiclassical perturbations to the Schwarzschild black hole geometry are studied within the black hole interior. The source of the perturbations is taken to be the vacuum stress-energy of quantized scalar, spinor, and vector fields, evaluated using analytic approximations developed by Page and others (for massless fields) and the DeWitt-Schwinger approximation (for massive fields). Viewing the interior as an anisotropic collapsing cosmology, we find that minimally or conformally coupled scalar fields, and spinor fields, decrease the anisotropy as the singularity is approached, while vector fields increase the anisotropy. In addition, we find that massless fields of all spins, and massive vector fields, strengthen the singularity, while massive scalar and spinor fields tend to slow the growth of curvature.
description: 29 pages, ReVTeX; 4 ps figures