cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
$*$-exponential of slice-regular functions
Creators: name: Altavilla, Amedeo
name: de Fabritiis, Chiara
Publisher: name: arXiv
Year: 2018
Subjects: subject: Complex Variables (math.CV)
subject: FOS: Mathematics
subject: Primary 30G35, secondary 30C15, 32A30, 47A60

description: According to [5] we define the $*$-exponential of a slice-regular function, which can be seen as a generalization of the complex exponential to quaternions. Explicit formulas for $\exp_*(f)$ are provided, also in terms of suitable sine and cosine functions. We completely classify under which conditions the $*$-exponential of a function is either slice-preserving or $\mathbb{C}_J$-preserving for some $J\in\mathbb{S}$ and show that $\exp_*(f)$ is never-vanishing. Sharp necessary and sufficient conditions are given in order that $\exp_*(f+g)=\exp_*(f)*\exp_*(g)$, finding an exceptional and unexpected case in which equality holds even if $f$ and $g$ do not commute. We also discuss the existence of a square root of a slice-preserving regular function, characterizing slice-preserving functions (defined on the circularization of simply connected domains) which admit square roots. Square roots of this kind of functions are used to provide a further formula for $\exp_{*}(f)$. A number of examples is given throughout the paper.
description: 15 pages; to appear in Proceedings of the American Mathematical Society
Suppression of dephasing and decoherence in open quantum systems
Creators: name: Bartram, David
Publisher: name: Imperial College London
Year: 2010

description: In this thesis, we discuss the possibilities for suppression of decoherence, the loss of purity in an open quantum system, and the related process of dephasing. In the first chapter, we review the literature on the subject of open system dynamics, decoherence and methods of decoherence suppression. In the second chapter, we focus on the specific case of a rotationally hot diatomic molecule as an example of an open quantum system, where molecular vibrational wavepackets are subject to dephasing due to rovibrational coupling. We report analytical and numerical results addressing whether the dephasing rate can be controlled by adjustment of the initial wavepacket phases. It appears that over long timescales, phase-only control is not possible, but for earlier timescales the possibility of phase-only control of dephasing remains. In addition, we point out that the time-dependence of the dephasing process depends significantly upon the degeneracy of the rotational environment states. In the final chapter, we discuss the same system, but apply a qualitatively different method of dephasing suppression based on the nonlinear resonance effect in a driving field. We extend previous work on the topic (Shapiro et al. [1]) by considering the effect of using a train of laser pulses as the driving field, in place of a two-colour continuous-wave laser field. We demonstrate that the pulse train method can be more effective at suppressing dephasing than the two-colour CW case.
Low Band-Gap Donor Polymers for Organic Solar Cells
Creators: name: Ong, Kok Haw
Publisher: name: Imperial College London
Year: 2010

description: One of the key challenges of organic solar cells is their relatively low power conversion efficiency. One way to improve the efficiency of these cells is to develop donor materials with improved photon harvesting capabilities, well-located highest-occupied molecular orbital (HOMO) and lowest-unoccupied molecular orbital (LUMO) energy levels, good hole transport characteristics and good processability. In this thesis, the design, synthesis and characterization of fifteen low band gap donor-acceptor type polymers are described. Two different acceptor moieties, 3,6- bis(thien-2-yl)-2,5-di-N-alkylpyrrolo[3,4-c]pyrrole-1,4-dione (DPP) and 2,1,3- benzothiadiazole (BT) were used in our polymer designs and the polymers were synthesised using the palladium-catalysed Stille cross-coupling method. The first series of polymers were random co-polymers of DPP and dithienothiophene. By tuning the solubility and absorption characteristics of the polymers, we achieved a polymer that gave power conversion efficiencies of up to 4.85 % when applied in solar cells. Low open-circuit voltages were obtained for these cells, hence the next series of polymers was designed with the aim of improving the open-circuit voltages. Although the lower HOMO levels of these polymers resulted in higher open-circuit voltages when applied in solar cells, the low hole mobility of the polymers and poor morphology of the polymer:fullerene films resulted in low solar cell power conversion efficiencies. Finally, a series of benzothiadiazole-oligothiophene polymers were synthesised. These polymers had high hole mobilities and wide absorption spectra. When these polymers were applied in organic thin-film transistors, good hole mobilities of up to 0.20 cm2/Vs were achieved, and when applied in solar cells, power conversion efficiencies of up to 6.2 % were achieved. These results show that benzothiadiazoleoligothiophene systems are promising candidates for both transistor and solar cell applications.
Guided random walk calculation of energies and $$ values of the $^1Σ_g$ state of H_2 in a magnetic field
Creators: name: Encinosa, Mario
Publisher: name: arXiv
Year: 1998
Subjects: subject: Atomic and Molecular Clusters (physics.atm-clus)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: Energies and spatial observables for the $^1Σ_g$ state of the hydrogen molecule in magnetic fields parallel to the proton-proton axis are calculated with a guided random walk Feynman-Kac algorithm. We demonstrate that the accuracy of the results and the simplicity of the method may prove it a viable alternative to large basis set expansions for small molecules in applied fields.
description: 10 pages, no figures
Governance Reform and Public Service Provision: Institutional Resilience and State-Society Synergy
Creators: name: Fox, Jonathan
Publisher: name: American University
Year: 2023
Subjects: classificationCode: 44
subject: Human society
classificationCode: 4404
subject: Development studies
classificationCode: 4407
subject: Policy and administration

description: For more than two decades, national and international policy reformers have sought to improve public service provision by applying transparency, participation and accountability innovations. Relevant initiatives often pursue collaborative governance strategies to bring public servants, citizens and civil society organizations together to generate feedback and promote problem-solving from the front lines. These efforts support the pursuit of Sustainable Development Goal (SDG) targets 16.6 and 16.7, which respectively call for developing “effective, accountable and transparent institutions” and ensuring “responsive, inclusive, participatory and representative decision-making at all levels”.This brief review of institutionally resilient participatory oversight reforms in four countries spotlights how hybrid, collaborative governance can work in practice—in cases where innovations have already been scaled up.
Non-destructive quantification of tissue scaffolds and augmentation implants using X-ray microtomography
Creators: name: Yue, Sheng
Publisher: name: Imperial College London
Year: 2011

description: A three dimensional (3D), interconnected, porous structure is essential for bone tissue engineering scaffolds and skeletal augmentation implants. Current methods of characterising these structures, however, are limited to average properties such as percentage porosity. More accurate quantitative properties, such as pore and interconnect size distributions, are required. Once measured, these parameters need to be correlated to tissue regeneration and integration criteria, including solute transport, blood vessel regeneration, bone ingrowth, and mechanical properties. Ideally, these techniques would work in vitro and in vivo, and hence allow evaluation of osteoconduction and osseointegration after implantation. This thesis will focus on developing and applying algorithms for use with X-ray microtomography (micro-CT or μCT) which can non-destructively image internal structure at the micron scale. The technique will be demonstrated on two separate materials: bioactive glass scaffolds and titanium (Ti) augmentation devices. Using the developed techniques, the structural and compositional evolutions of bioactive glass scaffolds in a simulated body fluid (SBF) flow environment were quantified using micro-CT scans taken at different dissolution stages. Results show that 70S30C bioactive scaffolds retain favourable 3D structures during a 28 d dissolution experiment, with a modal equivalent pore diameter of 682 μm staying unchanged, and a modal equivalent interconnect diameter decreasing from 252 μm to 209 μm. The techniques were then applied to porous Ti augmentation scaffolds. These scaffolds, produced by selective laser melting have very different pore networks with graded randomness and unit size. They present new challenges when applying the developed micro-CT quantification techniques. Using a further adapted methodology, the interconnecting pore sizes, strut thickness, and surface roughness were measured. This demonstrated the robustness of the methodologies and their applicability to a range of tissue scaffolds and augmentation devices.
Scapheremaeus walteri Colloff 2010
Creators: name: LIU, DONG
name: YI, TIAN-CI
name: XU, YUN
name: ZHANG, ZHI-QIANG
Publisher: name: Zenodo
Year: 2013
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Sarcoptiformes
Cymbaeremaeidae
Scapheremaeus
Scapheremaeus walteri

description: Scapheremaeus walteri Colloff, 2010: 28
— Holotype (ANIC), roots of Asplenium sp. on fallen Ficus sp., O’Reilly’s, Lamington National Park, Queensland, Australia (28°19'S, 153°05'E).
description: Published as part of LIU, DONG, YI, TIAN-CI, XU, YUN & ZHANG, ZHI-QIANG, 2013, Hotspots of new species discovery: new mite species described during 2007 to 2012, pp. 1-102 in Zootaxa 3663 (1) on page 76, DOI: 10.11646/zootaxa.3663.1.1, http://zenodo.org/record/5630595
The Lax pair for C_2-type Ruijsenaars-Schneider model
Creators: name: Chen, Kai
name: Hou, Bo-yu
name: Yang, Wen-Li
Publisher: name: arXiv
Year: 2000
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the C_2 Ruijsenaars-Schneider(RS) model with interaction potential of trigonometric type. The Lax pairs for the model with and without spectral parameter are constructed. Also given are the involutive Hamiltonians for the system. Taking nonrelativistic limit, we obtain the Lax pair of C_2 Calogero-Moser model.
description: LaTeX2e, 10 pages, some misprints corrected and sections rearranged
Safety-Critical Java: Level 2 in Practice
Creators: name: Luckcuck, Matt
name: Wellings, Andy
name: Cavalcanti, Ana
Publisher: name: arXiv
Year: 2018
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: Safety Critical Java (SCJ) is a profile of the Real-Time Specification for Java that brings to the safety-critical industry the possibility of using Java. SCJ defines three compliance levels: Level 0, Level 1 and Level 2. The SCJ specification is clear on what constitutes a Level 2 application in terms of its use of the defined API, but not the occasions on which it should be used. This paper broadly classifies the features that are only available at Level 2 into three groups:~nested mission sequencers, managed threads, and global scheduling across multiple processors. We explore the first two groups to elicit programming requirements that they support. We identify several areas where the SCJ specification needs modifications to support these requirements fully; these include:~support for terminating managed threads, the ability to set a deadline on the transition between missions, and augmentation of the mission sequencer concept to support composibility of timing constraints. We also propose simplifications to the termination protocol of missions and their mission sequencers. To illustrate the benefit of our changes, we present excerpts from a formal model of SCJ Level~2 written in Circus, a state-rich process algebra for refinement.
Some high peaks of partial Euler Product of the lowest primes on the Riemann Zeta critical line, in the interval (10^20 < T < 10^400 ) providing a proxy lower bound on Riemann Zeta function growth.
Creators: name: Martin, John
Publisher: name: figshare
Year: 2018
Subjects: subject: 10101 Algebra and Number Theory
subject: FOS: Mathematics

description: Using pari/gp software and the Lenstra-Lenstra-Lovász (LLL) basis reduction algorithm, repeated grid searches using larger and larger sets of the irrationals log(2 ∗ N_1 )/2π (150-850 elements) have produced many positions on the Riemann Zeta critical line (10^20 < T < 10^400 ), that correspond to large partial Euler product peaks using only the lowest primes (n=1000). In comparison to the known behaviour for large peaks of the Riemann Zeta function (17 < T < 10^32 ), the partial Euler product peaks appear to be proxy lower bounds of the |ζ(1/2 + iT )| growth rate. Several partial Euler product peaks exceed heights of 1,000,000 for T > 10^300 .
Additional file 1 of Cortical thickness distinguishes between major depression and schizophrenia in adolescents
Creators: name: Zhou, Zheyi
name: Wang, Kangcheng
name: Tang, Jinxiang
name: Wei, Dongtao
name: Song, Li
name: Peng, Yadong
name: Fu, Yixiao
name: Qiu, Jiang
Publisher: name: figshare
Year: 2021
Subjects: Biochemistry
Cell Biology
Biotechnology
Biological Sciences not elsewhere classified
Mental Health

description: Additional file 1: Supplementary Table 1. Comparison of the model classification accuracy of the different brain indexes.
A Formal Model of the Safety-Critical Java Level 2 Paradigm
Creators: name: Luckcuck, Matt
name: Cavalcanti, Ana
name: Wellings, Andy
Publisher: name: arXiv
Year: 2018
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: Safety-Critical Java (SCJ) introduces a new programming paradigm for applications that must be certified. The SCJ specification (JSR 302) is an Open Group Standard, but it does not include verification techniques. Previous work has addressed verification for SCJ Level~1 programs. We support the much more complex SCJ Level~2 programs, which allows the programming of highly concurrent multi-processor applications with Java threads, and wait and notify mechanisms. We present a formal model of SCJ Level~2 that captures the state and behaviour of both SCJ programs and the SCJ API. This is the first formal semantics of the SCJ Level~2 paradigm and is an essential ingredient in the development of refinement-based reasoning techniques for SCJ Level~2 programs. We show how our models can be used to prove properties of the SCJ API and applications.
Density estimation by Randomized Quasi-Monte Carlo
Creators: name: Abdellah, Amal Ben
name: L'Ecuyer, Pierre
name: Owen, Art B.
name: Puchhammer, Florian
Publisher: name: arXiv
Year: 2018
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics
subject: 62G07, 62G20, 65C06

description: We consider the problem of estimating the density of a random variable $X$ that can be sampled exactly by Monte Carlo (MC). We investigate the effectiveness of replacing MC by randomized quasi Monte Carlo (RQMC) or by stratified sampling over the unit cube, to reduce the integrated variance (IV) and the mean integrated square error (MISE) for kernel density estimators. We show theoretically and empirically that the RQMC and stratified estimators can achieve substantial reductions of the IV and the MISE, and even faster convergence rates than MC in some situations, while leaving the bias unchanged. We also show that the variance bounds obtained via a traditional Koksma-Hlawka-type inequality for RQMC are much too loose to be useful when the dimension of the problem exceeds a few units. We describe an alternative way to estimate the IV, a good bandwidth, and the MISE, under RQMC or stratification, and we show empirically that in some situations, the MISE can be reduced significantly even in high-dimensional settings.
description: 22 pages, 6 figures, 4 tables; We are thankful to the anonymous referees, whose comments were considered in this submission
Dual Pairs of Type II String Compactification
Creators: name: Sen, Ashoke
name: Vafa, Cumrun
Publisher: name: arXiv
Year: 1995
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Using a $U$-duality symmetry of type II compactification on $T^4$ represented by triality action on the $T$-duality group, and applying the adiabatic argument we construct dual pairs of type II compactifications in lower dimensions. The simplicity of this construction makes it an ideal set up for testing various conjectures about string dualities. In some of these models the type II string has a perturbative non-abelian gauge symmetry. Examples include models with $N=2,4,6$ supersymmetry in four dimensions. There are also self-dual (in the sense of $S-T$ exchange symmetric) $N=2$ and $N=6$ examples. A generalization of the adiabatic argument can be used to construct dual pairs of models with $N=1$ supersymmetry.
description: LaTeX file, 30 pages
Oral history interview with James Fife 1962
Publisher: name: Columbia University
Year: 2019
Subjects: Veterans
World War, 1914-1918
World War, 1939-1945--Naval operations, American
World War, 1939-1945--Naval operations
Submarine warfare
Military education

description: Background and education, Naval Academy; convoy duty, World War I; submarine school, 1918; Yangtze River patrol; fleet problems and training; merchant marine inspections; Director, Submarine School, New London, 1938-40; submarine observer in England, 1940; London Blitz, Portsmouth and Coventry damage; Mediterranean mission, submarine patrol; impressions of General Archibald Wavell, Colonel William Donovan, Anthony Eden, Sir John Dill; General Board, Washington, 1941; Pearl Harbor; Philippines, Admiral Thomas Hart, Corregidor; submarine operations, Australia and South Pacific; Battle of Java Sea; General Douglas MacArthur; Task Force 42; Solomons campaign; impressions of Admirals William Leahy, Chester Nimitz, Alan Kirk, Arthur Hepburn, Ernest King, Robert Ghormley, Arthur Carpender, Thomas Kinkaid, Charles Lockwood, and Fairfax Leary.
Rearrangements of Water Dimer and Hexamer
Creators: name: Wales, David J.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Atomic and Molecular Clusters (physics.atm-clus)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Rearrangement mechanisms of the water dimer and the cage form of the water hexamer are examined theoretically with particular reference to tunneling splittings and spectroscopy. The three lowest barrier rearrangements of the water dimer are characterized by {\it ab initio} methods and compared with the results of previous constrained calculations. The acceptor-tunneling pathway does not proceed via a direct rotation around the $C_2$ axis of the acceptor, but rather via relatively asynchronous rotation of the donor about the hydrogen bond and an associated `wag' of the acceptor. Rearrangements between different cage isomers of the water hexamer are studied for two empirical potentials. The experimentally observed triplet splittings may be the result of flip and bifurcation rearrangements of the two single-donor, single-acceptor monomers. Two-dimensional quantum calculations of the nuclear dynamics suggest that delocalization over more than one cage isomer may occur, especially in excited states.
description: 26 pages, 12 figures. Paper prepared in October 1996 for "Theory of Atomic and Molecular Physics" edited by Julius Jelliek, which has still not appeared!
Bosons Doubling
Creators: name: Mohrbach, H.
name: Berard, A.
name: Gosselin, P.
Publisher: name: arXiv
Year: 2000
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: It is shown that next-nearest-neighbor interactions may lead to unusual paramagnetic or ferromagnetic phases which physical content is radically different from the standard phases. Actually there are several particles described by the same quantum field in a manner similar to the species doubling of the lattice fermions. We prove the renormalizability of the theory at the one loop level.
description: 12 pages
Oral history interview with James Feely, 1999
Publisher: name: Columbia University
Year: 2020
Subjects: College teachers
Civil rights movements--History--20th century.--United States
Civil rights demonstrations--United States

description: The interview begins with a discussion of Feely's conservative background, his parent's occupations, and his education. As an adolescent, Feely was sent to the Stony Brook School, a Christian boarding school in New York. Upon graduating from Stony Brook, Feely attended New York University and Northwestern College (University of Northwestern - St. Paul) in Minnesota. After marrying classmate Marilynne Bulla, Feely worked several odd jobs before deciding to pursue a career in the academy. While at graduate school at Washington University in 1959, Feely met CORE members Tim Riley and Perry Proctor. Feely describes his first CORE meeting in 1960, during which he met Percy Green. Feely goes on to recall picketing White Castle. Feely explains his embrace of the civil rights movement. He also recalls the privileged treatment he received from law enforcement, events in the lives of his three children, and the influence activism had his children. The next portion of the interview is spent detailing Feely's experience as an activist-academic. Feely describes the political atmosphere of Lindenwood College and the surrounding community. Naming University President Franc L. McCluer and English Department Chair Alice Parker as allies, Feely speaks to the power of literature to induce social action. Feely goes on to discuss a dramatization of the disappearance of Chaney, Schwerner, and Goodman that ACTION performed; a diner sit-in in Columbia, Missouri; the significance of legislation; and his downtown St. Louis neighborhood. Feely summarizes the attempts of the FBI and CIA to thwart ACTION. Also discussed is: Martin Luther King Jr., Muhammad Ali, and African religions
On the choice of weight functions for linear representations of persistence diagrams
Creators: name: Divol, Vincent
name: Polonik, Wolfgang
Publisher: name: arXiv
Year: 2018
Subjects: subject: Probability (math.PR)
subject: Computational Geometry (cs.CG)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: Persistence diagrams are efficient descriptors of the topology of a point cloud. As they do not naturally belong to a Hilbert space, standard statistical methods cannot be directly applied to them. Instead, feature maps (or representations) are commonly used for the analysis. A large class of feature maps, which we call linear, depends on some weight functions, the choice of which is a critical issue. An important criterion to choose a weight function is to ensure stability of the feature maps with respect to Wasserstein distances on diagrams. We improve known results on the stability of such maps, and extend it to general weight functions. We also address the choice of the weight function by considering an asymptotic setting; assume that $\mathbb{X}_n$ is an i.i.d. sample from a density on $[0,1]^d$. For the Čech and Rips filtrations, we characterize the weight functions for which the corresponding feature maps converge as $n$ approaches infinity, and by doing so, we prove laws of large numbers for the total persistences of such diagrams. Those two approaches (stability and convergence) lead to the same simple heuristic for tuning weight functions: if the data lies near a $d$-dimensional manifold, then a sensible choice of weight function is the persistence to the power $α$ with $α\geq d$.
Nellis Air Force Base Curated Artifacts at Nevada State Museum
Creators: name: DeVos, Jim
Year: 2003
Subjects: Clark (County)
United States of America (Country)
Las Vegas, Nevada
Nevada (State / Territory)
Nye (County)
Nellis Air Force Base, Nevada
Artifact Database

description: List of the sites and associated artifacts that were reviewed during an inventory of the NAFB artifact collection at Nevada State Museum and the corrections made to database entries.
Scapheremaeus zephyrus Colloff 2010
Creators: name: LIU, DONG
name: YI, TIAN-CI
name: XU, YUN
name: ZHANG, ZHI-QIANG
Publisher: name: Zenodo
Year: 2013
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Sarcoptiformes
Cymbaeremaeidae
Scapheremaeus
Scapheremaeus zephyrus

description: Scapheremaeus zephyrus Colloff, 2010: 30
— Holotype female (ANIC), litter, coastal heathland, Little Target, Beecroft Peninsula, New South Wales, Australia (35°03'S, 150°48'E).
description: Published as part of LIU, DONG, YI, TIAN-CI, XU, YUN & ZHANG, ZHI-QIANG, 2013, Hotspots of new species discovery: new mite species described during 2007 to 2012, pp. 1-102 in Zootaxa 3663 (1) on page 76, DOI: 10.11646/zootaxa.3663.1.1, http://zenodo.org/record/5630595
Somalia Serosurvey 2021 - VPD and COVID-19 Questionnaire
Creators: name: Martin, Hélène
Publisher: name: Zenodo
Year: 2024
Subjects: Somalia
SARS-CoV-2
seroepidemiological studies
serosurvey
multi-bead assay
poliovirus
measles
rubella

description: This ODK XLSform spreadsheet holds the final form of the questionnaire that was used in face-to-face interviews in a population-based serosurvey led by the Somalia office of the World Health Organization in 2021.  The study methods are described in a manuscript that is available on the Gates Open Research website at https://doi.org/10.12688/gatesopenres.15270.1.
Ultrafilter limits of asymptotic density are not universally measurable
Creators: name: Brendle, Joerg
name: Larson, Paul B.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 28A20

description: We show that for any nonprincipal ultrafilter $U$ on the positive integers, then probability measure induced by the $U$-limit of asymptotic density is not a universally measurable function.
description: This note appeared in the Proceedings of the 2009 RIMS set theory workshop (2010)
Cuprite
Creators: name: Henderson, Tracey
name: Myhrer, Keith
name: S. Hall
name: Metscher, Allen
Year: 2006
Subjects: Clark (County)
United States of America (Country)
Las Vegas, Nevada
Nevada (State / Territory)
Nye (County)
Nellis Air Force Base, Nevada
Cuprite

description: Site description of Cuprite.
Rearrangements and Tunneling Splittings in Small Water Clusters
Creators: name: Wales, David J.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Atomic and Molecular Clusters (physics.atm-clus)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Recent far-infrared vibration-rotation tunneling (FIR-VRT) experiments pose new challenges to theory because the interpretation and prediction of such spectra requires a detailed understanding of the potential energy surface (PES) away from minima. In particular we need a global description of the PES in terms of a complete reaction graph. Hence all the transition states and associated mechanisms which might give rise to observable tunneling splittings must be characterized. It may be possible to guess the detailed permutations of atoms from the transition state alone, but experience suggests this is unwise. In this contribution a brief overview of the issues involved in treating the large amplitude motions of such systems will be given, with references to more detailed discussions and some specific examples. In particular we will consider the effective molecular symmetry group, the classification of rearrangement mechanisms, the location of minima and transition states and the calculation of reaction pathways. The application of these theories to small water clusters ranging from water dimer to water hexamer will then be considered. More details can be found in recent reviews.
description: 15 pages, 5 figures. This paper was prepared in August 1997 for the proceedings volume of the NATO-ASI meeting on "Recent Theoretical and Experimental Advances in Hydrogen Bonded Clusters" edited by Sotiris Xantheas, which has so far not appeared
The Area II Quarry (26Ck4984) Nellis Air Force Base, Nevada
Creators: name: Gaskill, Vikki
Year: 2002
Subjects: Clark (County)
United States of America (Country)
Las Vegas, Nevada
Nevada (State / Territory)
Nye (County)
Nellis Air Force Base, Nevada
26CK4984
Chipped Stone
Contract Order DACA63-00-D-0006
Report No. NAFB 02-01
Systematic Survey

description: Site 26Ck4984 is a prehistoric chert quarry located in Area II on Nellis Air Force Base. A detailed core analysis and debitage study, including core type, flake type, and comparisons of core facet to flake measurements was performed in order to determine if the site had been utilized by hunter-gatherer subsistence strategy. An adjunct to this project was the collection of raw material for the purpose of building a database of geochemical signatures of raw material sources.cal people or by people traveling long distances. Research results suggest that the site was used predominantly by local inhabitants, probably as an embedded activity in their h
Quantum fields in disequilibrium: neutral scalar bosons with long-range, inhomogeneous perturbations
Creators: name: Burgess, Mark
Publisher: name: arXiv
Year: 1995
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Using Schwinger's quantum action principle, dispersion relations are obtained for neutral scalar mesons interacting with bi-local sources. These relations are used as the basis of a method for representing the effect of interactions in the Gaussian approximation to field theory, and it is argued that a marked inhomogeneity, in space-time dependence of the sources, forces a discrete spectrum on the field. The development of such a system is characterized by features commonly associated with chaos and self-organization (localization by domain or cell formation). The Green functions play the role of an iterative map in phase space. Stable systems reside at the fixed points of the map. The present work can be applied to self-interacting theories by choosing suitable properties for the sources. Rapid transport leads to a second order phase transition and anomalous dispersion. Finally, it is shown that there is a compact representation of the non-equilibrium dynamics in terms of generalized chemical potentials, or equivalently as a pseudo-gauge theory, with an imaginary charge. This analogy shows, more clearly, how dissipation and entropy production are related to the source picture and transform a flip-flop like behaviour between two reservoirs into the Landau problem in a constant `magnetic field'. A summary of conventions and formalism is provided as a basis for future work.
description: 23 pages revtex
title: ADCO, Cartulaire de Cîteaux pour les possessions d’Izeure (XVe siècle), Cart. 178 (11 H 80), 82 folios, f. 0122
Creators: name: de la Côte d'Or, Archives départementales
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
name: CG21/F.PETOT/2015
name: Petot, Frédéric
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: cartulaire
subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge
subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris

description: Cartulaire de Cîteaux pour les possessions d’Izeure (XVe siècle), Archives départementales de la Côte-d'Or, Cart. 178 (11 H 80), 82 folios, f. 0122, Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Cartulaire de Cîteaux pour les possessions d’Izeure (XVe siècle), Archives départementales de la Côte-d'Or, Cart. 178 (11 H 80), 82 folios, f. 0122, in Projet CBMA - Corpus Burgundiae Medii Aevi [Ressource en ligne], https:// manuscrits.cbma-project.eu/
description: Provenance: abbaye de Cîteaux
description: Provenance: http://www.wikidata.org/entity/Q843261
description: Provenance: https://www.geonames.org/3024876
description: Provenance: http://www.idref.fr/030974844/id
description: Provenance: https://catalogue.bnf.fr/ark:/12148/cb12228351v
Boomerang returns unexpectedly
Creators: name: White, Martin
name: Scott, Douglas
name: Pierpaoli, Elena
Publisher: name: arXiv
Year: 2000
Subjects: subject: Astrophysics (astro-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Experimental study of the anisotropy in the cosmic microwave background (CMB) is gathering momentum. The eagerly awaited Boomerang results have lived up to expectations. They provide convincing evidence in favor of the standard paradigm: the Universe is close to flat and with primordial fluctuations which are redolent of inflation. Further scrutiny reveals something even more exciting however -- two hints that there may be some unforeseen physical effects. Firstly the primary acoustic peak appears at slightly larger scales than expected. Although this may be explicable through a combination of mundane effects, we suggest it is also prudent to consider the possibility that the Universe might be marginally closed. The other hint is provided by a second peak which appears less prominent than expected. This may indicate one of a number of possibilities, including increased damping length or tilted initial conditions, but also breaking of coherence or features in the initial power spectrum. Further data should test whether the current concordance model needs only to be tweaked, or to be enhanced in some fundamental way.
description: 11 pages, 3 figures, final version accepted by ApJ
title: Suivi du patient P
Creators: name: Leibowitch, Jacques (1942-2020)
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020

description: Graphique et tableau de fichier xls transformé en fichier pdf.
Topological Sigma-model, Hamiltonian Dynamics and Loop Space Lefschetz Number
Creators: name: Niemi, Antti J.
name: Pasanen, Pirjo
Publisher: name: arXiv
Year: 1995
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We use path integral methods and topological quantum field theory techniques to investigate a generic classical Hamiltonian system. In particular, we show that Floer's instanton equation is related to a functional Euler character in the quantum cohomology defined by the topological nonlinear $σ$--model. This relation is an infinite dimensional analog of the relation between Poincaré--Hopf and Gauss--Bonnet--Chern formulæ$~$ in classical Morse theory, and can also be viewed as a loop space generalization of the Lefschetz fixed point theorem. By applying localization techniques to path integrals we then show that for a Kähler manifold our functional Euler character coincides with the Euler character determined by the finite dimensional de Rham cohomology of the phase space. Our results are consistent with the Arnold conjecture which estimates periodic solutions to classical Hamilton's equations in terms of de Rham cohomology of the phase space.
description: 10 pages, LaTEX. New title and some modifications in the text. Version to appear in Phys. Lett. B
A Pilot Study of Holocene Tephrochronology and Spring Paleoecology in the Kawich Range, Nevada Test and Training Range, Nellis Air Force Base, Nevada
Creators: name: Onken, Jill
Publisher: name: Statistical Research, Inc.
Year: 2007
Subjects: Clark (County)
Black Mountain
Blackhawk Spring
Heenan Lake 7.5'
United States of America (Country)
Las Vegas, Nevada
Cedar Spring
Nevada (State / Territory)
Kawich Range
Nye (County)
Nellis Air Force Base, Nevada
Rose Spring
Holocene
Pollen
Dating Sample
Volcanic Ash
Macrobotanical
Environment Research
Reconnaissance / Survey

description: Seven springs in the northern Kawich Range were investigated to determine whether Holocene volcanic ash layers exist in alluvial deposits within the Nevada Test and Training Range (NTTR). Although no discrete ash layers were visible in the exposures studied, microtephra analysis of sediment samples collected at Rose Spring and Cedar Spring revealed the presence of varying concentrations of ash shards. Radiocarbon dating and stratigraphic relationships suggest that both Mono-Inyo Craters and Mazama ashes could be present, potentially extending the known geographic distribution of these ashes. Future studies should include geochemical characterization and tephra hydration analysis of these ashes to establish which volcanic events produced them. These ashes, although probably reworked, have potential to help date and correlate archaeological deposits on the NTTR.
Effect of Cystoseira barbata and Dictyota dichotoma-algae on reproduction and protein pattern of Biomphalaria alexandrina snails
Creators: name: Saad, Abd El-Halim A.
name: Ragab, Fawzy M. A.
name: Fatah, Hesham M. Abdel
name: Abdel-Wareth, Marwa T. A.
name: Nevine K. Ibrahim
Publisher: name: Taylor & Francis
Year: 2018
Subjects: subject: Biochemistry
subject: Genetics
subject: FOS: Biological sciences
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: Inorganic Chemistry
subject: Plant Biology

description: Controlling the snail intermediate host of schistosomiasis is one of the strategies used to reduce disease incidence. In this study screening tests were carried out on the action of dried powder of eight algal species against Biomphalaria alexandrina snails. The most effective powders were from Dictyota dichotoma and Cystoseira barbata with LC50 values of 560 and 2200 ppm, respectively. Prolonged exposure to sublethal concentrations of these two powders caused adverse effects on snails' reproduction especially at LC25. Hatchability of exposed eggs was lowest at LC25 of C. barbata, and LC15 of D. dichotoma. The most pronounced effects on the hermaphrodite gland of snails were caused by high concentrations of both algal suspensions, where ova were either degenerated or deformed and there were detrimental effects on all spermatogenesis stages. The electrophoretic separation of haemolymph proteins showed that the concentration with most effect was the LC15 for both tested algae as they resulted in more bands than the control and also an elevation in total protein content.
A Class III Cultural Resource Reconnaissance of the Contraves, FULL CLIP Extension Add-on. FULL CLIP Borrow Pit and Access Road Projects, Tonopah Test Range, Nye County, Nevada
Creators: name: Walsh, Laurie
Publisher: name: Desert Research Institute
Year: 1990
Subjects: Clark (County)
United States of America (Country)
Stinking Spring SW QUAD 7.5'
Las Vegas, Nevada
Cactus Flat
Nevada (State / Territory)
Nye (County)
Nellis Air Force Base, Nevada
Breen Creek QUAD 7.5'
Tonopah Test Range
26NY7638
26NY7616
26NY7615
26NY7618
26NY7617
26NY7447
26NY7619
26NY7449
26NY7448
26NY5818
26NY7450
Isolated Artifact
Reconnaissance / Survey

description: Sandia National Laboratories requested an archaeological reconnaissance from the Desert Research Institute (DRI) to survey five areas on the Tonopah Test Range. These areas consist of a small add on to the FULL CLIP Extension, the FULL CLIP Borrow Pit and access road, and Contraves 49S and Contraves 49N (Figures 1-4). Site 26NY7638 (Figure 2) was located on the access road; this site is comprised of an isolated chert flake and has been fully recorded. No further archaeological work is necessary at these locations.
Archaeological Sampling in the Kawich Range, Nellis Air Force Base
Creators: name: Nilsson, Elena
Publisher: name: Urs Corporation
Year: 1996
Subjects: Clark (County)
Great Basin
United States of America (Country)
Las Vegas, Nevada
Nevada (State / Territory)
Kawich Range
Nye (County)
Nellis Air Force Base, Nevada
Pre-Archaic
Ethnohistoric
Late Archaic
Early Archaic
Middle Archaic
Chipped Stone
Reconnaissance / Survey
Site Evaluation / Testing

description: Predictive site location modeling and sample survey conducted in the Kawich Range of the Central Great Basin resulted in the identification of over 200 largely pristine archaeological sites containing a diversity of features and artifacts. Identified sites range in age from the Pre-Archaic to the Ethnohistoric period. Site distribution patterns correlate well with the predictions of the model and, together with information shared by Native American participants, serve to document the extensive prehistoric, ethnographic, and traditional cultural use of the Kawich Range.
Measurement, Decoherence and Master Equations
Creators: name: Plato, Alexander Douglas Kerr
Publisher: name: Imperial College London
Year: 2011

description: In the first part of this thesis we concern ourselves with the problem of generating pseudo-random circuits. These are a series of quantum gates chosen at random, with the overall effect of implementing unitary operations with statistical properties close to that of unitaries drawn at random with respect to the Haar measure. Such circuits have a growing number of applications in quantum-information processing, but all known algorithms require an external input of classical randomness. We suggest a scheme to implement random circuits in a weighted graph state. The input state is entangled with the weighted graph state and a random circuit is implemented by performing local measurements in one fixed basis only. A central idea in the analysis of this proposal is the average bipartite entanglement generated by the repeated application of such circuits on a large number of randomly chosen input product states. For a truly random circuit, this should agree with that obtained by applying unitaries at random chosen uniformly with respect to the Haar measure, values which can be calculated using Pages Conjecture. Part II is largely concerned with continuous variables (CV) systems. In particular, we are interested in two descriptions. That of the class of Gaussian states, and that of systems which can be adequately described through the use of Markovian master equations. In the case of the latter, there are a number of approaches one may take in order to derive a suitable equation, all of which require some sort of approximation. These approximations can be made based on a mixture of mathematical and physical grounds. However, unfortunately it is not always clear how justified we are in making a particular choice, especially when the test system we wish to describe includes its own internal interactions. In an attempt to clarify this situation, we derive Markovian master equations for single and interacting harmonic systems under different scenarios, including strong internal coupling. By comparing the dynamics resulting from the corresponding master equations with numerical simulations of the global systems evolution, we assess the robustness of the assumptions usually made in the process of deriving the reduced Markovian dynamics. This serves to clarify the general properties of other open quantum system scenarios subject to treatment within a Markovian approximation. Finally, we extend the notions of the smooth min- and smooth max-entropies to the continuous variable setting. Specifically, we have provided expressions to evaluate these measures on arbitrary Gaussian states. These expressions rely only on the symplectic eigenvalues of the corresponding covariance matrix. As an application, we have considered their use as a suitable measure for detecting thermalisation.
Properties and toughening of silica nanoparticle- and carbon nanotube-modified epoxy polymers
Creators: name: Hsieh, Tsung-Han
Publisher: name: Imperial College London
Year: 2011

description: The present work investigates the material properties of a thermosetting epoxy polymer modified with various reinforcements of micron-sized glass beads and rubber particles, and nano-sized silica particles and carbon nanotubes. The Young’s modulus of the modified epoxies with rigid additives was significantly increased, especially for the nanocomposites containing high contents of nanosilica or nanotubes. The fracture testing showed that the combination of the soft rubber particles and carbon nanotubes provided the best way to improve the toughness and fatigue performance, because a synergistic effect on the fracture behaviour was obtained in the hybrid-modified epoxies. Fractography showed various mechanisms caused by the addition of the toughening particles, and the main toughening mechanisms are dependent on the modifiers used. Nanotubes operated the debonding, pull-out and void growth mechanisms improve the toughness and fatigue performance of their composites. The inclusion of the rigid spherical particles into the epoxy increased the toughness and fatigue performance via mechanisms of shear band yield and plastic void growth. Rubber cavitation was considered to be the main toughening mechanism in the rubber-modified materials. Several dispersion methods were examined for the multi-walled carbon nanotubes, and the best way to get well-dispersed nanotubes without significant damage was identified. The level of the nanotube dispersion was assessed using a greyscale analysis and transmission optical microscopy. Finally, a sonication process using an ultrasonic probe was chosen to prepare the nanotube-modified epoxies. Modelling work was carried out to predict the toughening contribution from the nanosilica and nanotubes. There was a good agreement between the predictions and the experimental results for the toughness. The modified Halpin-Tsai equation was used to calculate the increased modulus caused by the addition of the nanotubes, and the predicted modulus can fit well with the measured values, even at high nanotube contents which resulted in serious agglomeration.
Oral history interview with James H. Douglas, Jr., 1972
Publisher: name: Columbia University
Year: 2020
Subjects: Cabinet officers--United States
Weapons systems

description: Under Secretary of Air Force, Secretary of Air Force, Deputy Secretary of Defense, 1953-61; budget cuts; missile development: Navajo, Snark, Polaris, Thor, Jupiter; space program; military intelligence; U-2 flights; high flights over Berlin; building of Air Force Academy; Indo-China, Defense Intelligence Agency
From circular paths to elliptic orbits: A geometric approach to Kepler's motion
Creators: name: González-Villanueva, A.
name: Guillaumín-España, E.
name: Martínez-y-Romero, R. P.
name: Núñez-Yépez, H. N.
name: Salas-Brito, A. L.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Classical Physics (physics.class-ph)
subject: Physics Education (physics.ed-ph)
subject: FOS: Physical sciences

description: The hodograph, i.e. the path traced by a body in velocity space, was introduced by Hamilton in 1846 as an alternative for studying certain dynamical problems. The hodograph of the Kepler problem was then investigated and shown to be a circle, it was next used to investigate some other properties of the motion. We here propose a new method for tracing the hodograph and the corresponding configuration space orbit in Kepler's problem starting from the initial conditions given and trying to use no more than the methods of synthetic geometry in a sort of Newtonian approach. All of our geometric constructions require straight edge and compass only.
description: 9 pages, 4 figures