cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Causal evolution of spin networks
Creators: name: Markopoulou, Fotini
name: Smolin, Lee
Publisher: name: arXiv
Year: 1997
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: A new approach to quantum gravity is described which joins the loop representation formulation of the canonical theory to the causal set formulation of the path integral. The theory assigns quantum amplitudes to special classes of causal sets, which consist of spin networks representing quantum states of the gravitational field joined together by labeled null edges. The theory exists in 3+1, 2+1 and 1+1 dimensional versions, and may also be interepreted as a theory of labeled timelike surfaces. The dynamics is specified by a choice of functions of the labelings of d+1 dimensional simplices,which represent elementary future light cones of events in these discrete spacetimes. The quantum dynamics thus respects the discrete causal structure of the causal sets. In the 1+1 dimensional case the theory is closely related to directed percolation models. In this case, at least, the theory may have critical behavior associated with percolation, leading to the existence of a classical limit.
description: latex, 32 pages, 17 figures
Action of the mapping class group on a complex of curves and a presentation for the mapping class group of a surface
Creators: name: Hirose, Susumu
Publisher: name: arXiv
Year: 2000
Subjects: subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 57M99, 20F05

description: S. Gervais gave a finite presentation for the mapping class group of a surface (math.GT/9811162). We show this presentation without using Wajnryb's simple presentation. We use a complex of curves defined by Harvey, in place of Hatcher and Thurston's complex.
description: 29 pages, 4 figures
Trachyelytron Viswajyothi & Clark 2022, gen. nov.
Creators: name: Viswajyothi, Keezhpattillam
name: Clark, Shawn M.
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Chrysomelidae
Trachyelytron

description: Genus Trachyelytron gen. nov.
urn:lsid:zoobank.org:act: 359BFF29-9AAE-4A1B-94A5-6D5BE20F675C
Type species
Chthoneis smaragdipennis Jacoby, 1888, by present designation.
Diagnosis
The single named species in this genus was formerly placed in Platymorpha, but the two genera have very little in common. Among other things, males of Trachyelytron gen. nov. lack a mesal spine or spinelike tuft of setae on the clypeus, as well as enlarged foretibiae that are characteristic of Platymorpha. The coarse elytral punctation (Fig. 107) is also characteristic of the new genus. See the following key for additional diagnostic characters.
Etymology
The name ‘ Trachyelytron ’ is Greek for ‘rough sheath’, and it refers to the coarsely punctate elytra.
Remarks
This genus is erected to accommodate a single described species, T. smaragdipennis (Jacoby, 1888) comb. nov., which occurs in Guatemala. Specimens we have seen from Nicaragua probably belong to the same species, although the elytra are metallic purple, rather than metallic green. See Fig. 107 for a habitus illustration.
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 pages 26-27, DOI: 10.5852/ejt.2022.842.1945, http://zenodo.org/record/7222499
New integrable boundary conditions for the Ablowitz-Ladik model: from Hamiltonian formalism to nonlinear mirror image method
Creators: name: Caudrelier, Vincent
name: Crampe, Nicolas
Publisher: name: arXiv
Year: 2019
Subjects: subject: Mathematical Physics (math-ph)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: Using Sklyanin's classical theory of integrable boundary conditions, we use the Hamiltonian approach to derive new integrable boundary conditions for the Ablowitz-Ladik model on the finite and half infinite lattice. In the case of half infinite lattice, the special and new emphasis of this paper is to connect directly the Hamiltonian approach, based on the classical $r$-matrix, with the zero curvature representation and Bäcklund transformation approach that allows one to implement a nonlinear mirror image method and construct explicit solutions. It is shown that for our boundary conditions, which generalise (discrete) Robin boundary conditions, a nontrivial extension of the known mirror image method to what we call {\it time-dependent boundary conditions} is needed. A careful discussion of this extension is given and is facilitated by introducing the notion of intrinsic and extrinsic picture for describing boundary conditions. This gives the specific link between Sklyanin's reflection matrices and Bäcklund transformations combined with folding, {\it in the case of non-diagonal reflection matrices}. All our results reproduce the known Robin boundary conditions setup as a special case: the diagonal case. Explicit formulas for constructing multisoliton solutions on the half-lattice with our time-dependent boundary conditions are given and some examples are plotted.
description: 32 pages. References added. Accepted authors version
Dynamical and Topological methods in Theory of Geodesically Equivalent Metrics
Creators: name: Matveev, Vladimir S.
name: Topalov, Petar J.
Publisher: name: arXiv
Year: 1999
Subjects: subject: Differential Geometry (math.DG)
subject: Symplectic Geometry (math.SG)
subject: Spectral Theory (math.SP)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 53Cxx, 53Axx, 81Qxx, 35Pxx

description: This paper is a review on recently found connection between geodesically equivalent metrics and integrable geodesic flows. Suppose two different metrics on one manifold have the same geodesics. We show that then the geodesic flows of these metrics admit sufficiently many integrals (of a special form) in involution and vice versa. The quantum version of this result is also true. As a corollary we have that the topology of the manifold (with two different metrics with the same geodesics) must be sufficiently simple. Also we have that the non-proportionality of the metrics at a point induces the non-proportionality of the metrics at almost all points.
description: 12 pages, LaTeX
Panicum coloratum L.
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
Poales
Poaceae
Panicum
Panicum coloratum

description: Panicum coloratum L.  —
Habit: Herb.
Habitat: LMDF; up to 2 300 m. Distribution: II.
Voucher: N/A.
Reference: Fries & Fries (1928).
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 39, DOI: 10.11646/phytotaxa.546.1.1, http://zenodo.org/record/6550464
title: Untersuchungen zum Leitungsmechanismus intermetallischer Verbindungen
Creators: name: Bruns, Hermann
name: Lautz, Günter
Publisher: name: Vieweg
Year: 1954
Subjects: subject: Brunsvicensien der Universitätsbibliothek Braunschweig
subject: Abhandlungen der BWG
subject: 530

description: According to the latest experiments of recent authors there are two distinct groups of intermetallic compounds: Those with a metallic behaviour and those with semiconducting properties. The measurement of the temperature dependence of the electrical conductivity, of the thermoelectric power and the Wiedemann-Franz-Lorenz ratio in this paper should shed some light on the boundary between these two groups. The authors show that in the system Zn-Sb the intermetallic compound ZnSb is a semiconductor. Its properties are discussed in detail in connection with the isomorphous semiconducting compound CdSb. In this way one obtains some insight in the structure of the chemical bond and the stability of these compounds. Careful observations of the electrical conductivity of alloys with a small deviation in the stoichiometric concentration, of the compound ZnSb prove that Zn3Sb2 also is in some modifications a real semiconductor.
Investigations on the electrical properties of alloys in the system In-Bi allow us to conclude that InBi is a metallic compound. This behaviour is in contradiction to the well known InSb. The variation of the electrical properties when Bi-atoms are substituted for Sb-atoms in InSb is discussed in connection with the crystal structure.
Similar experiments on Au2Bi and AuSb2 confirm the metallic character of both compounds. In contradiction to the statements on InSb-InBi there is no change in the electrical properties from a metallic to a semiconducting behaviour, although the relations between these compounds are very similar to those between the ZnS- and wurtzite-type-structure.
The experiments and theoretical discussions confirm the fact that there is large number of physical parameters, as lattice-type, electronic configuration, electronegativity, chemical bond etc. which determine the nature of the electronic conduction. For a quantitative determination of the boundary between metallic and semiconducting compounds it is necessary to make further measurements in the present manner.
Anomalous dimensions of gauge-invariant amplitudes in massless effective gauge theories of strongly correlated systems
Creators: name: Gusynin, V. P.
name: Khveshchenko, D. V.
name: Reenders, M.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: We use the radial gauge to calculate the recently proposed ansatz for the physical electron propagator in such effective models of strongly correlated electron systems as the $QED_3$ theory of the pseudogap phase of the cuprates. The results of our analysis help to settle the recent dispute about the sign and the magnitude of the anomalous dimension which characterizes the gauge invariant amplitude in question and set the stage for computing other, more physically relevant, ones.
description: Latex, 11 pages, no figures
Analytical Gradients for Projection-Based Wavefunction-in-DFT Embedding
Creators: name: Lee, Sebastian J. R.
name: Ding, Feizhi
name: Manby, Frederick R.
name: Miller, Thomas F.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Projection-based embedding provides a simple, robust, and accurate approach for describing a small part of a chemical system at the level of a correlated wavefunction method while the remainder of the system is described at the level of density functional theory. Here, we present the derivation, implementation, and numerical demonstration of analytical nuclear gradients for projection-based wavefunction-in-density functional theory (WF-in-DFT) embedding. The gradients are formulated in the Lagrangian framework to enforce orthogonality, localization, and Brillouin constraints on the molecular orbitals. An important aspect of the gradient theory is that WF contributions to the total WF-in-DFT gradient can be simply evaluated using existing WF gradient implementations without modification. Another simplifying aspect is that Kohn-Sham (KS) DFT contributions to the projection-based embedding gradient do not require knowledge of the WF calculation beyond the relaxed WF density. Projection-based WF-in-DFT embedding gradients are thus easily generalized to any combination of WF and KS-DFT methods. We provide numerical demonstration of the method for several applications, including calculation of a minimum energy pathway for a hydride transfer in a cobalt-based molecular catalyst using the nudged-elastic-band method at the CCSD-in-DFT level of theory, which reveals large differences from the transition state geometry predicted using DFT.
description: 15 pages, 4 figures
title: Über das Auftreten der Natrium-D-Linien im Nachthimmelleuchten und im Nordlicht
Creators: name: Cario, Günther
name: Stille, Ulrich
Publisher: name: Vieweg
Year: 1954
Subjects: subject: Brunsvicensien der Universitätsbibliothek Braunschweig
subject: Abhandlungen der BWG
subject: 530

description: In the course of investigations of the twilight-effect of the D-lines of sodium 14 spectra were photographed on March 1, 1941, showing the strong aurora on this evening. The spectra prove unambiguously that the twilight-effect occures completely undisturbed and independent of the aurora observed at the same time; i.e. the layers normally emitting the D-lines in the night-sky are not affected by the aurora. The auroral spectrum does not contain the D-lines. Thus the aurora took place above the layer emitting the D-lines in the night-sky. Occasional observations of the D-lines in auroras of higher layers indicate that in such cases the sodium was of extraterrestrial origin.
Dimensionally continued Oppenheimer-Snyder gravitational collapse. I - solutions in even dimensions
Creators: name: Ilha, Anderson
name: Lemos, Jose' P. S.
Publisher: name: arXiv
Year: 1996
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The extension of the general relativity theory to higher dimensions, so that the field equations for the metric remain of second order, is done through the Lovelock action. This action can also be interpreted as the dimensionally continued Euler characteristics of lower dimensions. The theory has many constant coefficients apparently without any physical meaning. However, it is possible, in a natural way, to reduce to two (the cosmological and Newton's constant) these several arbitrary coefficients, yielding a restricted Lovelock gravity. In this process one separates theories in even dimensions from theories in odd dimensions. These theories have static black hole solutions. In general relativity, black holes appear as the final state of gravitational collapse. In this work, gravitational collapse of a regular dust fluid in even dimensional restricted Lovelock gravity is studied. It is found that black holes emerge as the final state for these regular initial conditions.
description: Latex
Panicum eickii Mez
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
Poales
Poaceae
Panicum
Panicum eickii

description: Panicum eickii Mez  —
Habit: Herb.
Habitat: HZ, AZ; 1 900–4 000 m. Distribution: II.
 Voucher: Chogoria Track, Alt. 3 311 m, 24 Jan. 2015, SAJIT 002814 (HIB).
 References: Clayton et al. (1974b), 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 39, DOI: 10.11646/phytotaxa.546.1.1, http://zenodo.org/record/6550464
Toward identification of the risk group of food products: Chemometric assessment of heavy metals content in confectionery products
Creators: name: Strahinja Kovačević
name: Lončarević, Ivana
name: Pajin, Biljana
name: Fišteš, Aleksandar
name: Vasiljević, Ivana
name: Lazović, Milana
name: Mrkajić, Danica
name: Banjac, Milica Karadžić
name: Podunavac-Kuzmanović, Sanja
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Biochemistry
subject: Cell Biology
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: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: Science Policy

description: The main raw material for cookies production is wheat flour (white or wholemeal/integral) as a nutritionally highly valuable component. In addition to the benefits it brings, this raw material is also a potential source of contamination with residues of heavy metals originating from soil and plant protection agents. Therefore, it is necessary to analyze their concentrations in both wheat flour and final products, since the wheat flour is often present in cookies and related confectionery products in a proportion >60 or 70%. The aim of this paper was to determine the content of heavy metals, including highly toxic ones (As, Cd, Hg and Pb) and essential metals with potential toxic effects (Fe, Cu, Cr, Co, Mn, Ni, Zn) in cookies, waffles and crackers available in local markets in the Autonomous Province of Vojvodina, Republic of Serbia. The present study is focused on chemometric estimation of the risk group of confectionery products containing wheat flour in an easy and efficient way. Hierarchical cluster analysis, principal component analysis, linear discriminant analysis and the sum of ranking differences analysis were applied for this purpose as chemometric tools with substantially different theoretical bases. The obtained results indicated that there is a specific group of cookies with a relatively high content of heavy metals. The group of crackers contained lower concentrations of heavy metals than the other groups of studied products. The results of the sum of ranking differences analysis indicate that there is no strict separation between the samples regarding the ratio among heavy metals contents.
Proust and Speech
Creators: Trumbo-Tual, Matthew
Publisher: name: Columbia University
Year: 2019
Subjects: French literature
Sociolinguistics
Speech
Identity (Psychology)--Social aspects
Sexual minorities in literature
Jews in literature

description: This dissertation examines how Marcel Proust presents and uses different speech styles in A la recherche du temps perdu. The narrator of the novel analyzes how almost everyone he encounters speaks and consistently bases his decisions about how to interact with others on his evaluation of their speech mannerisms. I argue that, through the narrator’s observations, Proust emphasizes the role of the socioindexicality of speech, or how the way a person speaks communicates their social identity, in mediating social relations. I begin by presenting the narrator’s comments on how social status is interpreted through the way that people speak. Then I turn in the second chapter to how the narrator’s understanding of what factors determine a person’s speech mannerisms changes over the course of his life. The third chapter argues that the narrator has a sustained interest in how people use speech to perform different identities and shows how his investigation into the reasons these performances succeed or fail informs Proust’s own technique of using different speech styles to create fictional characters in his novel. The last chapter discusses how Proust’s Jewish and gay characters adapt how they speak to avoid or overcome discrimination. In each of these chapters, I show how, in A la recherche, the way social identity is interpreted and performed through speech causes individuals to take on different identities. I argue that, through the narrator’s comments on this phenomenon, Proust demonstrates how it affects the structure of society while also studying the way it can be used to create fictional characters in a novel.
Cosmic web anisotropy is the primary indicator of halo assembly bias
Creators: name: Ramakrishnan, Sujatha
name: Paranjape, Aseem
name: Hahn, Oliver
name: Sheth, Ravi K.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The internal properties of dark matter haloes correlate with the large-scale halo clustering strength at fixed halo mass $-$ an effect known as assembly bias $-$ and are also strongly affected by the local, non-linear cosmic web. Characterising a halo's local web environment by its tidal anisotropy $α$ at scales $\sim4$ x the halo radius, we demonstrate that these multi-scale correlations represent two distinct statistical links: one between the internal property and $α$, and the other between $α$ and large-scale ( $>30h^{-1}$Mpc) halo bias $b_1$. We focus on scalar internal properties of haloes related to formation time (concentration $c_{\rm vir}$), shape (mass ellipsoid asphericity $c/a$), velocity dispersion structure (velocity ellipsoid asphericity $c_v/a_v$ and velocity anisotropy $β$) and angular momentum (dimensionless spin $λ$) in the mass range $8\times10^{11}< M_{\rm vir}/(h^{-1}M_\odot)<5\times10^{14}$. Using conditional correlation coefficients and other detailed tests, we show that the joint distribution of $α$, $b_1$ and any of the internal properties $c\in\{β,c_v/a_v,c/a,c_{\rm vir},λ\}$ is consistent with $p(α,b_1,c)\simeq p(α)p(b_1|α)p(c|α)$, at all but the largest masses. $\textit{Thus, the assembly bias trends $c-b_1$ reflect the two fundamental correlations $c-α$ and $b_1-α$.}$ Our results are unaffected by the exclusion of haloes with recent major merger events or splashback objects, although the latter are distinguished by the fact that $α$ does not explain their assembly bias trends. The overarching importance of $α$ provides a new perspective on the nature of assembly bias of distinct haloes, with potential ramifications for incorporating realistic assembly bias effects into mock catalogs of future large-scale structure surveys and for detecting galaxy assembly bias.
description: 21 pages, 14 figures; v2: Added discussion, results strengthened. Conclusions unchanged. Accepted by MNRAS
title: Zur Frage der Herkunft des Braunschweiger Burglöwen
Creators: name: Dorn, Paul
Publisher: name: Vieweg
Year: 1954
Subjects: subject: Brunsvicensien der Universitätsbibliothek Braunschweig
subject: Abhandlungen der BWG
subject: 551

description: As a result of geological and petrological tests it has been proved that the Brunswick lion, cast in the year 1166, must have been cast in the town of Brunswick itself.
Panicum subalbidum Kunth
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
Poales
Poaceae
Panicum
Panicum subalbidum

description: Panicum subalbidum Kunth  —
Habit: Herb.
Habitat: LMWF; up to 3 000 m. Distribution: II.
 Voucher: Gathiba River, crossing below Kamweti Forest Station, Alt. 2 150 m, 10 Nov. 1971, Robertson 1624 (EA).
References: Fries & Fries (1928), 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 39, DOI: 10.11646/phytotaxa.546.1.1, http://zenodo.org/record/6550464
Protest & Public Space: Challenging Notions of Sociospatial Distance in New York City
Creators: Cook, Rebecca
Publisher: name: Columbia University
Year: 2020
Subjects: Public spaces--Political aspects
Public spaces--Social aspects
Protest movements
Online social networks
City planning
Twenty-first century

description: Cities have experienced a resurgence in social movements and public space protests in recent years. Contemporary literature in the fields of sociology and communication provides extensive exploration of the use of online public spaces, often in the form of social media engagement, in support of civic action and social movements. While it has been acknowledged that the fields of architecture and urban design play a fundamental role in the “cultural shaping of spatial forms” that support the offline efforts of these movements, a gap in understanding between the relationship of online and offline public spaces exists (Castells, 2012). Aimed towards that disconnect, this research explores the nature of social movement in public space today - focusing on the use of Manhattan’s Foley Square by three distinct social movements in January 2020. This thesis, then, proposes an experimental methodology for exploring this gap in literature. Findings suggest there are palpable relationships between a movement’s online social network and its choreography of tangible civic action in the form of public space protest. Discrete patterns exist across movements in the way themes of space, narrative, participating actors and place are constructed. As such, this study provides planners and designers insight on the power and potential of the built environment to act as an integral communicative device towards civic action and social progress in contemporary urban environments.
Proof by characters of the orthogonal-orthogonal duality and relations of Casimir invariants
Creators: name: Neergård, K.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The theorem of orthogonal-orthogonal duality of Rowe, Repka, and Carvalho is proven by a method based on characters that is very different from theirs and akin to Helmers's half a century earlier proof of the analogous sympletic-symplectic duality. I demonstrate how three duality theorems listed by Rowe, Repka, and Carvalho allow very brief derivations of linear relations between the Casimir invariants of the connected representations based on the geometry of their Young diagrams, and discuss for which physical systems other than such already considered in the literature an analysis in terms of the orthogonal-orthogonal duality might be useful.
Phase space caustics in multi-component systems
Creators: name: Tanaka, Atushi
Publisher: name: arXiv
Year: 1998
Subjects: subject: Quantum Physics (quant-ph)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: As examples of quantum-"classical" coupling systems, multi-component systems are studied by semiclassical evaluations of the Feynman kernels in the coherent-state representation. From the observation of the phase space caustics due to the presence of the internal degree of freedom (IDF), two phenomena are explained in terms of the semiclassical theory: (1) The quantum oscillations of the IDF induce quantum interference patterns in the Hushimi representation; (2) Chaotic dynamics destroys the coherence of the quantum oscillations.
description: 6 pages, 7 ps figures, To appear in Phys. Rev. Lett
The unphysical nature of "Warp Drive"
Creators: name: Pfenning, Michael J.
name: Ford, L. H.
Publisher: name: arXiv
Year: 1997
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We will apply the quantum inequality type restrictions to Alcubierre's warp drive metric on a scale in which a local region of spacetime can be considered ``flat''. These are inequalities that restrict the magnitude and extent of the negative energy which is needed to form the warp drive metric. From this we are able to place limits on the parameters of the ``Warp Bubble''. It will be shown that the bubble wall thickness is on the order of only a few hundred Planck lengths. Then we will show that the total integrated energy density needed to maintain the warp metric with such thin walls is physically unattainable.
description: 11 pages, 3 figures, latex. This revision corrects a typographical sign error in Eq. (3)
title: Die Darstellung atomaren Wasserstoffs bei höheren Drucken
Creators: name: Kroepelin, Hans
name: Vogel, Erwin
name: Kremser, G.
Publisher: name: Vieweg
Year: 1954
Subjects: subject: Brunsvicensien der Universitätsbibliothek Braunschweig
subject: Abhandlungen der BWG
subject: 54

description: Pure and dry hydrogen is partially dissociated into atoms on a tungsten filament at 2500° K at pressures of about 20 mm Hg. This filament is mounted in a quartz tube (diam.17 mm) the walls of which are covered with an anticatalytic layer. The tube is surrounded by a water jacket. The mixture of atomic and molecular hydrogen is hereby cooled to room temperature. A stream of cold hydrogen with a constant content of some percentage of atoms during several hours is obtainable for preparatory purposes.
The modelling and analysis of fractional-order control systems in frequency domain
Creators: name: Petras, I.
name: Dorcak, L.
name: O'Leary, P.
name: Vinagre, B. M.
name: Podlubny, I.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics
subject: 26A33, 93C80 (Primary), 93C05 (Secondary)

description: This paper deals with fractional-order controlled systems and fractional-order controllers in the frequency domain. The mathematical description by fractional transfer functions and properties of these systems are presented. The new ways for modelling of fractional-order systems are illustrated with a numerical example and obtained results are discussed in conclusion.
description: LaTeX v.2.09, 4 pages, 5 (eps) figures
R. Int. de Dir. Público – RIDP | Belo Horizonte, ano 2, n. 3, jul./dez. 2017
Creators: name: Martins, Ricardo Marcondes
name: Dal Pozzo, Augusto Neves
name: Valim, Rafael
name: Rocha, Silvio Luiz Ferreira da
Publisher: name: Zenodo
Year: 2017

description: Número 5, Ano 2018, Jul/Dez - 2018 Apontamentos sobre a invalidação do ato administrativo na jurisprudência do STF Ricardo Marcondes Martins La nueva Ley de Cautelares contra el Estado Nacional como una política pública de tutela procesal diferenciada – Un análisis de la Ley 26.854 frente a los principios y estándares internacionales de protección de los Derechos Humanos Pablo Octavio Cabral Princípio da soberania nacional e investimentos estrangeiros em infraestrutura: a contribuição de pressupostos metodológicos do construtivismo lógico-semântico para análise interpretativa Carolina Reis Jatobá Coêlho A construção da responsabilidade penal do indivíduo no plano internacional Renan de Marco D’Andrea Maia, Yuri Valladão Carvalho Pena capital e direitos humanos – A abolição da pena de morte no direito internacional Thiago Perez Bernardes de Moraes Princípios constitucionais e competência regulamentar da Administração nos casos de omissão legislativa Rafael Valle Vernaschi O método da ponderação de princípios e o atual Código de Processo Civil Fernando Ramalho Paranhos Direito fundamental de propriedade x função social: uma questão de ponderação? Patricia Prieto Moreira Dispensa de licitação e a ponderação de princípios Allan Kenji Tasaka
Some regularity results for Lorentz-Finsler spaces
Creators: name: Minguzzi, E.
name: Suhr, S.
Publisher: name: arXiv
Year: 2019
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We prove that for continuous Lorentz-Finsler spaces timelike completeness implies inextendibility. Furthermore, we prove that under suitable locally Lipschitz conditions on the Finsler fundamental function the continuous causal curves that are locally length maximizing (geodesics) have definite causal character, either lightlike almost everywhere or timelike almost everywhere. These results generalize previous theorems by Galloway, Ling and Sbierski, and by Graf and Ling.
description: 18 pages, 3 figures. v2: added two figures
Proteins at Interfaces: Conformational Behavior and Wear
Creators: Dumont, Emmanuel Louis Pierre
Publisher: name: Columbia University
Year: 2014
Subjects: Biophysics
Biomedical engineering

description: Proteins at interfaces play a major role in biomaterials and lab-on-a-chip devices. Protein interactions with the surface change their conformations and therefore their ability to bind to their respective ligands. Another major area of interest surrounding biomaterials and lab-on-a-chip devices is the prediction and prevention of wear. Wear is the progressive loss of material from an object caused by contact and relative movement of the contacting solid, liquid, or gas. It is estimated that wear costs 1% of the gross domestic product (approximately $150 billion for the US). With the emergence of drug-releasing implants and lab-on-the-chip devices, wear has also become a major concern in bio- and nano- technology. In our laboratory, we use microtubules (filamentous proteins) gliding on kinesin motor proteins as transporters in biosensors. This system, known as the motility assay, is ideal for studying how the conformation of kinesins impacts the gliding of microtubules and therefore the performance of the biosensor. The proposed studies seek to show that kinesins' geometry changes with their grafting density following De Gennes' scaling laws for flexible polymers (Chapter 2 , published in Langmuir as E.L.P. Dumont, H. Belmas, and H. Hess, Observing the mushroom-to-brush transition for kinesin proteins, 2013, 29 (49), 15142-15145) and that microtubules experience molecular wear due to their repeated interactions with kinesins (Chapter 3, under review for Nature Nanotechnology as E.L.P. Dumont and H. Hess, Molecular wear of microtubules propelled by surface-adhered kinesins). These two results permit the prediction of the lifetime of biosensors using kinesin-propelled microtubules (Chapter 4, to be submitted to Nano Letters as Y. Jeune-Smith, E.L.P. Dumont and H. Hess, Wear and breakage combine to mechanically degrade kinesin-powered molecular shuttles). I also discuss the importance of mechanical fatigue for molecular machine design (Chapter 5, published as H. Hess and E.L.P. Dumont, Fatigue Failure and Molecular Machine Design, Small, 7, 1619-1623, 2011). Finally, and it is unrelated to the previous chapters, I developed Monte Carlo simulations for protein adsorption on polymer-coated surfaces (Chapter 6, to be submitted as E.L.P. Dumont, A.V. Guillaume, A. Gore, and H. Hess, Random Sequential Adsorption of proteins on polymer-covered surfaces: A simulation-based approach) and I explored a molecular model to explain the fracture of materials at low stresses (Chapter 7).
Panicum trichocladum K. Schum.
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
Poales
Poaceae
Panicum
Panicum trichocladum

description: Panicum trichocladum K.Schum.  —
Habit: Herb.
Habitat: LMWF; up to 2 300 m. Distribution: II.
 Voucher: Chogoria, 9 Apr. 1977, Kahurananga 843 (EA).
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 39, DOI: 10.11646/phytotaxa.546.1.1, http://zenodo.org/record/6550464
Provincial Reconstruction Teams | Iraq: Effective Review, Planning, and Standards of Practice
Creators: Pedroza, Edgar
Publisher: name: Columbia University
Year: 2012
Subjects: Armed Forces
Buildings--Repair and reconstruction
Iraq War (2003-2011)
Postwar reconstruction

description: The initial PRT (Provincial Reconstruction Team) effort in Iraq commenced in earnest throughout 2005 and early 2006. The intended process of facilitating provincial capacity, although, met a number of obstacles throughout its execution. A key inquiry of the following text has been what have been the threats to the operational capacity of PRTs in meeting the mission of 'capacity development'? Have existing efforts to identify the mission, organization, and effectiveness of PRTs allowed for the identification of logistical, physical, and organizational threats to PRT operations? Could the resulting area of foci, as identifying the treats to the operational capacity of PRTs, allow for the ability to remediate areas of weakness to the existing PRT mission of 'capacity development'?
The homotopy classification and the index of boundary value problems for general elliptic operators
Creators: name: Savin, A. Yu.
name: Sternin, B. Yu.
name: Schulze, B. -W.
Publisher: name: arXiv
Year: 1999
Subjects: subject: Analysis of PDEs (math.AP)
subject: K-Theory and Homology (math.KT)
subject: Operator Algebras (math.OA)
subject: FOS: Mathematics
subject: 58G20 (Primary) 58G10, 19M05, 35J55 (Secondary)

description: We give the homotopy classification and compute the index of boundary value problems for elliptic equations. The classical case of operators that satisfy the Atiyah-Bott condition is studied first. We also consider the general case of boundary value problems for operators that do not necessarily satisfy the Atiyah-Bott condition.
description: 27 pages, 1 figure
Paspalum scrobiculatum L.
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
Poales
Poaceae
Paspalum
Paspalum scrobiculatum

description: Paspalum scrobiculatum L.  —
Habit: Herb.
Habitat: LMDF; up to 2 900 m. Distribution: I.
 Voucher: Mutamayu Farm on Burguret River, Alt. 1 950 m, 30 Dec. 1999, Robertson 7330 (EA).
Reference: Bussmann (1994).
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 39, DOI: 10.11646/phytotaxa.546.1.1, http://zenodo.org/record/6550464
Questionnaire
Creators: name: Ayodotun Stephen Ibidunni
Publisher: name: figshare
Year: 2019
Subjects: subject: 150399 Business and Management not elsewhere classified
subject: FOS: Economics and business
subject: 159999 Commerce, Management, Tourism and Services not elsewhere classified
subject: 150305 Human Resources Management
subject: 150310 Organisation and Management Theory

description: The document contains questionnaire guide in the areas of workforce diversity, job satisfaction and organisational commitment
title: Über die Achromasie optischer Systeme für mehr als zwei Wellenlängen
Creators: name: Naumann, Helmut
Publisher: name: Vieweg
Year: 1954
Subjects: subject: Brunsvicensien der Universitätsbibliothek Braunschweig
subject: Abhandlungen der BWG
subject: 53

description: Achromatism for any number of k wavelengths in a system of k thin lenses is possible when the partial dispersions of the k glasses of these lenses have no linear dependency with another. Indeed this dependency is existent within the visible spektrum (Abbe). It is shown here that it is less actual with increasing distance of the considered wave length from visible lines, esp. in infrared. Thus achromatism for more than two wavelengths is possible with normal glasses provided that no more than two of them are in the visible. But technical possibilities for the realisation of such a multi-achromatic system are by far better when natural or artificial crystals for one lens at least or for two of them are used. Glasses with shortened dispersion in blue ("short flints") are useful too, but ask for special consideration.
Theory of a Higher Order Phase Transition: Superconducting Transition in BKBO
Creators: name: Kumar, P.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We describe here the properties expected of a higher (with emphasis on the order fourth) order phase transition. The order is identified in the sense first noted by Ehrenfest, namely in terms of the temperature dependence of the ordered state free energy near the phase boundary. We have derived an equation for the phase boundary in terms of the discontinuities in thermodynamic observables, developed a Ginzburg-Landau free energy and studied the thermodynamic and magnetic properties. We also discuss the current status of experiments on $Ba_{0.6}K_{0.4}BiO_3$ and other $BiO_3$ based superconductors, the expectations for parameters and examine alternative explanations of the experimental results.
description: 18 pages, no figures
Pseudo Random Arterial Modulation (PRAM): A Novel ASL Approach to Measure Flow and Blood Transit Times
Creators: Taei-Tehrani, Mohammad Reza
Publisher: name: Columbia University
Year: 2012
Subjects: Biomedical engineering
Diagnostic imaging
Psychometrics

description: The Pseudo Random Arterial Modulation (PRAM) is a non-invasive MRI based method to measure blood flow. It does not require any contrast agent but rather uses water protons in the body as the contrast. PRAM is based on a pseudo random sequence of inversions and non-inversions of the arterial blood using radio frequency (RF) pulses at a labeling plane inferior to the imaging plane. A series of images are taken at the imaging plane and flow reconstructed from the transit time measurements. PRAM does not require separate control and label acquisition as is common in Arterial Spin Labeling (ASL) but rather measures the distribution of transit times to a voxel within one integrated scan. Adiabatic inversion or non-inversion pre-pulses (PRAM pulses) are performed prior to a gradient echo imaging. The PRAM method has been tested on a flow phantom and the results were in confirmation with the theoretical flow and velocity measurements. Subsequently the PRAM method was tested on a human leg and the results were comparable with the Ultrasound measurements. The final testing phase was performed on a human brain and the results were compared with the phased contrast MRA. We have demonstrated here that that the PRAM technique can measure the velocity profile and the transit time accurately and efficiently on any organ such as human brain.
title: Zur Frage des Vorkommens pleistozäner Glazialformen am Meißner
Creators: name: Poser, Hans
name: Brochu, Michel
Publisher: name: Vieweg
Year: 1954
Subjects: subject: Brunsvicensien der Universitätsbibliothek Braunschweig
subject: Abhandlungen der BWG
subject: 55

description: Cet article donne suite au problème des qlaciations pleistocènes relatives aux massifs montagneux de I'Allemagne centrale. Il dispute l'origine glaciaire de certaines formes sur le flanc E du petit massif du Meißner, à 620-710m d'altitude. Des indices de preuve d'un petit glacier de cirque très localisé, probablement würmien ont été trouvés, à partir d'observations sur la nature, la direction et la morphométrie des galets.
Cependant, la limite des neiges éternelles de ce glacier de cirque - à la très faible altitude d'environ 650m - n'est pas tout-à-fait représentative, cet endroit étant favorisé par certains facteurs non climatiques.
Quantum Inequalities on the Energy Density in Static Robertson-Walker Spacetimes
Creators: name: Pfenning, Michael J.
name: Ford, L. H.
Publisher: name: arXiv
Year: 1996
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Quantum inequality restrictions on the stress-energy tensor for negative energy are developed for three and four-dimensional static spacetimes. We derive a general inequality in terms of a sum of mode functions which constrains the magnitude and duration of negative energy seen by an observer at rest in a static spacetime. This inequality is evaluated explicitly for a minimally coupled scalar field in three and four-dimensional static Robertson-Walker universes. In the limit of vanishing curvature, the flat spacetime inequalities are recovered. More generally, these inequalities contain the effects of spacetime curvature. In the limit of short sampling times, they take the flat space form plus subdominant curvature-dependent corrections.
description: 18 pages, plain LATEX, with 3 figures, uses epsf
title: Die Theorie der inneren Dämpfung schwingender fester Körper
Creators: name: Voelz, Kurt
Publisher: name: Vieweg
Year: 1954
Subjects: subject: Brunsvicensien der Universitätsbibliothek Braunschweig
subject: Abhandlungen der BWG
subject: 530

description: This paper gives a surview on the theories existing today for damping of oscillating solids. The oldest are the purely formal representations of solids by Maxwell or Kelvin elements, today extended to a point where the solid is considered as a parallel wiring of such elements with a finite or infinite number of different relaxation times. From a physical point of view it must be distinguished between damping effects depending on the shape of the oscillating solids like damping by macroscopic heat currents and such effects due to the oscillating matter alone. For these latter Prandtl has elaborated a theory starting from the fact that matter consists of molecules; this theory has been extended and brought into a shape clearer from a mathematical point of view by Eyring. It includes as special cases damping independent of frequency and the true relaxation phenomena of which the most important are discussed.
Pentameris borussica Galley & H. P. Linder
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
Magnoliopsida
Malvales
Malvaceae
Pentameris
Pentameris borussica

description: Pentameris borussica (K.Schum.) Galley & H.P.Linder  —
Habit: Herb.
Habitat: HZ, AZ, NZ; 2 900–4 700 m. Distribution: IIIa.
 Voucher: Timau Track, Alt. 3 249 m, 20 Jan. 2015, SAJIT 002744 (HIB).
References: Fries & Fries (1926), Clayton (1970), Young & Young (1983), Bussmann & Beck (1995a, 1998, 1999), Abdi (2013), 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 39, DOI: 10.11646/phytotaxa.546.1.1, http://zenodo.org/record/6550464
Teck's Elkview Operations : visualising an integrated approach to conceptual closure and reclamation planning
Creators: name: Harrison, D.
name: Crockett, D.
name: Eykamp, L.
Publisher: name: The University of British Columbia
Year: 2016

description: Surface mining has the potential to impact both natural and cultural landscapes. Hence, reclamation and closure planning is an integral part of the mine development process — one that presents an opportunity for increasingly effective and sustainable solutions. Reclamation and closure planning, including landscape design, can address post-mine scenarios as they relate to a range of environmental and social objectives. This study examines the role of landscape design and visualisation techniques to support an integrated reclamation planning process that increases landscape performance and better communicates technical information related to post-mine scenarios. Teck’s Elkview operation provides a case study of progressive integrated landscape design and visualisation techniques in closure and reclamation planning. This study examines landscape design efforts that help create more naturalistic landforms and their potential benefits related to environmental management and building strong community relationships. Regulators and stakeholders are placing increasing demands on mining companies to develop post-mining landscapes that demonstrate a more natural appearance. Post-mine landform design can meet this objective while concurrently providing other benefits such as enhanced wildlife habitat. This study explores methods for developing diverse landforms and revegetation patterns that blend with adjacent natural landscape character; these effectively integrate drainage systems to control surface flows, reduce erosion, minimise long-term maintenance, and create micro-topography that supports wetlands and tree, shrub, and forb cover that promotes biodiversity. While the contribution of visual aesthetics to landscape performance is difficult to evaluate, the use of data-driven three-dimensional (3-D) visualisations can support improved public acceptance of post-mine landform and revegetation design options by illustrating design intentions and reclamation strategies. Visualisations play a role in communicating technical project design information, supporting community involvement by identifying interests and priorities, and building awareness and understanding of post-mine reclamation scenarios. Advanced visualisation techniques are able to adapt to changes in project design and play a role much larger than graphic support.