cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Relevance of inter-composite fermion interaction to the edge Tomonaga-Luttinger liquid
Creators: name: Mandal, Sudhansu S.
name: Jain, Jainendra K.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: It is shown that Wen's effective theory correctly describes the Tomonaga-Luttinger liquid at the edge of a system of non-interacting composite fermions. However, the weak residual interaction between composite fermions appears to be a relevant perturbation. The filling factor dependence of the Tomonaga-Luttinger parameter is estimated for interacting composite fermions in a microscopic approach and satisfactory agreement with experiment is achieved. It is suggested that the electron field operator may not have a simple representation in the effective one dimensional theory.
description: 5 pages; accepted in Phys. Rev. Lett
title: Virtual Engineering: Informations-, Simulations- und Kooperationsmodelle für den ingenieurgerechten Entwurfsprozess
Creators: name: Rank, Ernst
name: Borrmann, André
name: Wenisch, Petra
Publisher: name: Cramer
Year: 2008
Subjects: subject: Brunsvicensien der Universitätsbibliothek Braunschweig
subject: Jahrbuch der BWG
subject: 00
subject: 62

description: Entwurfsprozesse in den Ingenieurwissenschaften finden in aller Regel nicht linear sondern in rückgekoppelten Zyklen statt. Dabei spielt Kommunikation und Kooperation eine entscheidende Rolle, zumal der Entwurf komplexer technischer Produkte nahezu immer in multidisziplinären Teams zu erfolgen hat. Neuere Entwicklungen im Bereich der Produkt- und Prozessmodelle sowie der Anbindung von Höchstleistungscomputern ermöglichen es heute, selbst für komplexe Simulationsaufgaben eine direkte Interaktion des Ingenieurs mit dem Modell sogar während der Berechnung zu erlauben und auf diese Weise diesen Rückkopplungsprozess deutlich zu beschleunigen. Noch einen Schritt weiter gehen so genannten Computational Steering Systeme, welche die Zusammenarbeit von Ingenieurteams über schnelle Computernetze durch gemeinsame ‚virtuelle Projekträume’ unterstützen. Der Aufsatz gibt einen Überblick über neuere Entwicklungen von computergestützten Informations-, Simulations- und Kooperationsmodellen im Bau- und Umweltingenieurwesen und zeigt Beispiele zu einer netzgestützten Simulation der Luftströmung in Innenräumen.
Malva parviflora 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
Magnoliopsida
Malvales
Malvaceae
Malva
Malva parviflora

description: * Malva parviflora L.  —
Habit: Herb.
Habitat: LMDF. Distribution: IV.
 Voucher: Ca. 4 km to Naro Moru Gate, Alt. 2 221 m, 23 Jul. 2014, SAJIT 002175 (HIB).
Reference: N/A.
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 62, DOI: 10.11646/phytotaxa.546.1.1, http://zenodo.org/record/6550464
title: Zur Strukturdynamik -– Modellbildungen und Anwendungen
Creators: name: Ramm, Ekkehard
Publisher: name: Cramer
Year: 2008
Subjects: subject: Brunsvicensien der Universitätsbibliothek Braunschweig
subject: Jahrbuch der BWG
subject: 62

description: Die Strukturdynamik befasst sich mit der Dynamik von Tragwerken. Der Beitrag gibt nach einer kurzen Motivation einen Überblick über die impliziten Zeitintegrationsverfahren, die in der nichtlinearen Dynamik eine zentrale Rolle spielen; hierzu gehören die etablierten Verfahren der Newmark-Familie, aber auch die neueren Galerkin-Verfahren, die auch für die Zeitdiskretisierung Finite-Element-Methoden einsetzen. Beispiele aus Forschung und Praxis vervollständigen die Abhandlung.
Science Teachers' Perceptions of the Relationship between Game Play and Inquiry Learning
Creators: Mezei, Jessica M.
Publisher: name: Columbia University
Year: 2015
Subjects: Education
Science--Study and teaching

description: The implementation of inquiry learning in American science classrooms remains a challenge. Teachers’ perceptions of inquiry learning are predicated on their past educational experiences, which means outdated methods of learning may influence teachers’ instructional approaches. In order to enhance their understanding and ultimately their implementation of inquiry learning, teachers need new and more relevant models.  This study takes a preliminary step exploring the potential of game play as a valuable experience for science teachers.
      It has been proposed that game play and inquiry experiences can embody constructivist processes of learning, however there has been little work done with science teachers to systematically explore the relationship between the two. Game play may be an effective new model for teacher education and it is important to understand if and how teachers relate game playing experience and knowledge to inquiry. This study examined science teachers’ game playing experiences and their perceptions of inquiry experiences and evaluated teacher's recognition of learning in both contexts. Data was collected through an online survey (N=246) and a series of follow-up interviews (N=29). Research questions guiding the study were: (1) What is the nature of the relationship between science teachers’ game experience and their perceptions of inquiry? (2) How do teachers describe learning in and from game playing as compared with inquiry science learning? and (3) What is the range of similarities and differences teachers articulate between game play and inquiry experiences?
      Results showed weak quantitative links between science teachers’ game experiences and their perceptions of inquiry, but identified promising game variables such as belief in games as learning tools, game experiences, and playing a diverse set of games for future study. The qualitative data suggests that teachers made broad linkages in terms of parallels of both teaching and learning. Teachers mostly articulated learning connections in terms of the active or participatory nature of the experiences. Additionally, a majority of teachers discussed inquiry learning in concert with inquiry teaching which led to a wider range of comparisons made based on the teacher’s interpretation of inquiry as a pedagogical approach instead of focusing solely on inquiry learning.
      This study has implications for both research and practice. Results demonstrate that teachers are interested in game play as it relates to learning and the linkages teachers made between the domains suggests it may yet prove to be a fruitful analogical device that could be leveraged for teacher development. However, further study is needed to test these claims and ultimately, research that further aligns the benefits of game play experiences to teacher practice is encouraged in order to build on the propositions and findings of this thesis.
Is there evidence for cosmic anisotropy in the polarization of distant radio sources?
Creators: name: Carroll, Sean M.
name: Field, George B.
Publisher: name: arXiv
Year: 1997
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Measurements of the polarization angle and orientation of cosmological radio sources may be used to search for unusual effects in the propagation of light through the universe. Recently, Nodland and Ralston (astro-ph/9704196) have claimed to find evidence for a redshift- and direction-dependent rotation effect in existing data. We re-examine these data and argue that there is no statistically significant signal present. We are able to place stringent limits on hypothetical chiral interactions of photons propagating through spacetime.
description: 17 pages, including 7 figures. (Arithmetic error corrected, fixing value of chi^2)
Use of remote sensing in reclamation monitoring to reduce risk, cost and unnecessary field work
Creators: name: Tenszen, Chris
Publisher: name: The University of British Columbia
Year: 2024

description: Integration of remote sensing into reclamation monitoring is a popular topic as we continue to see improvements in UAV and satellite technology. The potential benefits are numerous; however, limitations still remain that prevent technology from totally replacing boots-on-the-ground. The benefits of replacing traditional monitoring with technology-enabled versionsinclude cost savings, reducing emissions, preventing the spread of invasive species, and reducing health and safety risks. Some limitations that remain include the inability to identify plant species by spectral analysis, line of sight flight limits for UAVs, and pixel resolution with satellite imagery. While we wait for technology to solve these limitations and for regulators to become more accepting, there are many opportunities for hybrid approaches that test the limitations, realize some of the benefits, and begin to normalize the integration of technology. This paper provides tangible interim results and insights from a reclamation monitoring program for an inter-provincial pipeline that is in its fifth year of operation. Although the case study is not specific to mining, the scale of the project (over 1,000 km of pipeline) is comparable and the methods used are transferable. The monitoring program to be discussed used a pairing of remote sensing by aerial reconnaissance and ground assessment, along with a validation process to demonstrate that reclamation issues requiring mitigation were identifiable in the remote sensing data with less than 5% error. Interim results demonstrate that the program has been effective and has reduced the total field effort on the program by close to 30% compared to traditional methods.
Malva verticillata 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
Magnoliopsida
Malvales
Malvaceae
Malva
Malva verticillata

description: Malva verticillata L.  —
Habit: Herb.
Habitat: LMDF, BZ, UMF, HZ. Distribution: I.
 Voucher: Northwest Mount Kenya, Alt. 3048 m, 18 Mar. 1968, Mwangangi & Fosberg 558 (EA).
References: Fries & Fries (1924), Bussmann (1993, 1994), 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 62, DOI: 10.11646/phytotaxa.546.1.1, http://zenodo.org/record/6550464
Activation energies for spin-reversed excitations in the fractional quantum Hall effect
Creators: name: Mandal, Sudhansu S.
name: Jain, J. K.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The activation energy measured in transport experiments in the fractional Hall regime corresponds to the energy required to create a far separated particle hole pair. We calculate, for several fractional quantum Hall states, the energy gaps for the excitation in which the excited composite fermion reverses its spin quantum number. Our results indicate that such spin reversed excitations may be relevant in experimentally accessible regimes.
Solar Power
Creators: name: Hernandez, Josh
Publisher: name: figshare
Year: 2019
Subjects: Environmental Science

description: Solar power is the conversion of energy from sunlight into electricity, either directly using photovoltaics (PV), indirectly using concentrated solar power, or a combination. Concentrated solar power systems use lenses or mirrors and tracking systems to focus a large area of sunlight into a small beam. Photovoltaic cells convert light into an electric current using the photovoltaic effect.
Use of synchronization and adaptive control in parameter estimation from a time series
Creators: name: Maybhate, Anil
name: Amritkar, R. E.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: A technique is introduced for estimating unknown parameters when time series of only one variable from a multivariate nonlinear dynamical system is given. The technique employs a combination of two different control methods, a linear feedback for synchronizing system variables and an adaptive control. The technique is shown to work even when the unknown parameter appears in the evolution equations of the variables other than the one for which the time series is given. The technique not only esablishes that explicit detailed information about all system variables and parameters is contained in a scalar time series, but also gives a way to exract it out under suitable conditions. Illustrations are presented and effect of noise is studied.
description: Revised for simultaneous estimation of many parameters. 24 pages of RevTex, 12 figures in postscript files. To appear in PR(E)
Pavonia kilimandscharica Gurke
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
Pavonia
Pavonia kilimandscharica

description: Pavonia kilimandscharica Gürke  —
Habit: Herb.
Habitat: LMWF, LMDF, BZ; up to 2 700 m. Distribution: II.
 Voucher: Mount Kenya, 1 Dec. 1981, Klauss E.A.16550 (EA).
References: Verdcourt & Mwachala (2009), 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 62, DOI: 10.11646/phytotaxa.546.1.1, http://zenodo.org/record/6550464
Use of column trials for SRF and GBBR development for selenium and nitrate treatment at Brule Mine in BC
Creators: name: Young, Fischer L.
name: Atuke, Dickson
name: Simair, Monique C.
Publisher: name: The University of British Columbia
Year: 2024

description: Pilot-scale column trials are being used to advance Saturated Rock Fill (SRF) and Gravel Bed Bioreactor (GBBR) water treatment technologies for selenium and nitrate treatment at Conuma Resource’s Brule Mine. SRF and GBBR technologies can be matured and optimized concurrently with column trials using site-specific materials using a clear technology maturation plan (TMP). Climate-controlled column trials were used to advance the technology readiness level (TRL), addressing information gaps identified in a risk register. Mine rock and contact waters were shipped from site and used in the trials. Multiple conditions and scenarios were tested to inform on potential operational risks and identify appropriate controls and management strategies. The trials confirmed the feasibility of the implementations, demonstrating effective selenium and nitrate treatment across a range of potential temperatures (4°C to 22°C), flow rates, and concentrations. Operation of the trials allowed for treatment mechanisms and rates to be documented and leveraged through managed operating conditions and dosed reagents. Stress testing highlighted the technology’s operational flexibility, showing that nitrate and selenium treatment persisted despite carbon dosing interruptions and exposure to oxygen. Interestingly, selenium treatment occurred at a rate that was faster than nitrate treatment and independent of reagent dosing. Selenium concentrations were artificially increased to 10x the normal concentrations to determine treatment rates and influencing factors. These findings indicate that the Conuma Brule mine materials result in an SRF or GBBR operation that can be operated under variable site conditions without compromising treatment efficacy. Additional testing was performed to determine the fate and form of the selenium and treated constituents, as well as the microbiology and biogeochemistry. Results of this testing can be found in a second paper titled ‘Fate and Form of Selenium and Microbiology Analysis for SRF and GBBR development at Brule Mine in BC.
Quasiclassical calculation of spontaneous current in restricted geometries
Creators: name: Amin, M. H. S.
name: Coury, M.
name: Zagoskin, A. M.
name: Rashkeev, S. N.
name: Omelyanchouk, A. N.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Calculation of current and order parameter distribution in inhomogeneous superconductors is often based on a self-consistent solution of Eilenberger equations for quasiclassical Green's functions. Compared to the original Gorkov equations, the problem is much simplified due to the fact that the values of Green's functions at a given point are connected to the bulk ones at infinity (boundary values) by ``dragging'' along the classical trajectories of quasiparticles. In finite size systems, where classical trajectories undergo multiple reflections from surfaces and interfaces, the usefulness of the approach is no longer obvious, since there is no simple criterion to determine what boundary value a trajectory corresponds to, and whether it reaches infinity at all. Here, we demonstrate the modification of the approach based on the Schophol-Maki transformation, which provides the basis for stable numerical calculations in 2D. We apply it to two examples: generation of spontaneous currents and magnetic moments in isolated islands of d-wave superconductor with subdominant order-parameters s and d_{xy}, and in a grain boundary junction between two arbitrarily oriented d-wave superconductors. Both examples are relevant to the discussion of time-reversal symmetry breaking in unconventional superconductors, as well as for application in quantum computing.
description: 6 pages, Submitted for publication in the proceedings of MS+S2002 conference, Japan
Towards the Theory of Reheating After Inflation
Creators: name: Kofman, Lev
name: Linde, Andrei
name: Starobinsky, Alexei
Publisher: name: arXiv
Year: 1997
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Reheating after inflation occurs due to particle production by the oscillating inflaton field. In this paper we describe the perturbative approach to reheating, and then concentrate on effects beyond the perturbation theory. They are related to the stage of parametric resonance called preheating. It may occur in an expanding universe if the initial amplitude of oscillations of the inflaton field is large enough. We investigate a simple model of a massive inflaton field coupled to another scalar field X. Parametric resonance in this model is very broad. It occurs in a very unusual stochastic manner, which is different from the parametric resonance in the case when the expansion of the universe is neglected. Quantum fields interacting with the oscillating inflaton field experience a series of kicks which occur with phases uncorrelated to each other. We call this process stochastic resonance. We develop the theory of preheating taking into account the expansion of the universe and backreaction of produced particles, including the effects of rescattering. The process of preheating can be divided into several distinct stages. At the first stage the backreaction of created particles is not important. At the second stage backreaction increases the frequency of oscillations of the inflaton field, which makes the process even more efficient than before. Then the effects related to scattering of X-particles terminate the resonance. We calculate the density of X-particles and their quantum fluctuations with all backreaction effects taken into account. This allows us to find the range of masses and coupling constants for which one has efficient preheating. In particular, under certain conditions this process may produce particles with a mass much greater than the mass of the inflaton field.
description: 41 pages, revtex, 12 figures. Some improvements and additions are made. This version is scheduled for publication in Phys. Rev. on Sep. 15
Two series of polyhedral fundamental domains for Lorentz bi-quotients
Creators: name: Turki, Nasser Bin
name: Pratoussevitch, Anna
Publisher: name: arXiv
Year: 2019
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 53C50 (Primary), 14J17, 32S25, 51M20, 52B10 (Secondary)

description: The main aim of this paper is to give two infinite series of examples of Lorentz space forms that can be obtained from Lorentz polyhedra by identification of faces. These Lorentz space forms are bi-quotients of the form $Γ_1\backslash G/Γ_2$, where $G=\widetilde{\operatorname{SU}(1,1)}\cong\widetilde{\operatorname{SL}(2,{\mathbb R})}$ is a simply connected Lie group with the Lorentz metric given by the Killing form, $Γ_1$ and $Γ_2$ are discrete subgroups of $G$ and $Γ_2$ is cyclic. A construction of polyhedral fundamental domains for the action of $Γ_1\timesΓ_2$ on $G$ via $(g,h)\cdot x=gxh^{-1}$ was given in the earlier work of the second author. In this paper we give an explicit description of the fundamental domains obtained by this construction for two infinite series of groups. These results are connected to singularity theory as the bi-quotients $Γ_1\backslash G/Γ_2$ appear as links of certain quasi-homogeneous $\mathbb Q$-Gorenstein surface singularities, i.e.\ the intersections of the singular variety with sufficiently small spheres around the isolated singular point.
description: 16 pages, 6 figures, 2 tables of figures
Sparmannia ricinocarpa Kuntze
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
Lamiales
Rehmanniaceae
Sparmannia
Sparmannia ricinocarpa

description: Sparmannia ricinocarpa (Eckl. & Zeyh.) Kuntze  —
Habit: Herb.
Habitat: LMWF, LMDF, BZ; up to 3 400 m. Distribution: II.
 Voucher: Chogoria Track, Alt. 2 658 m, 22 Jul. 2014, SAJIT 002027 (HIB).
References: Fries & Fries (1927b), Bussmann (1993, 1994), Bussmann & Beck (1995a), 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 63, DOI: 10.11646/phytotaxa.546.1.1, http://zenodo.org/record/6550464
Science-Based Lawmaking: Effective Integration of Science in International Environmental Lawmaking
Creators: Avgerinopoulou, Dionysia Theodora
Publisher: name: Columbia University
Year: 2011
Subjects: International law
Environmental law
Science and law
Public health laws

description: The Thesis takes the approach of a critique of the current international environmental lawmaking processes and the systemic shortcomings and aims to redesign parts of the international environmental lawmaking system on new terms. Through case studies and doctrinal analyses, an array of initial questions guides the research through a variety of factors influencing the International Environmental Law. The Thesis mainly tests and finds the following hypotheses positive; some of the decisive factors that would create an optimized lawmaking framework and advance the purposes of I.E.L. include, but are not limited to, the adoption of:
      (a) progressive voting processes, including the majority rule and opting-out procedures as means of adopting primary and, most importantly, secondary legislation resulting in legally binding rules upon the States without requiring prior ratification by the states within the framework of International Organizations or Multilateral Environmental Agreements;
      (b) science-based secondary legislation, defined by specific criteria and boundaries that primary laws pose on them, that is more detailed than primary laws and of a more technical nature, promulgated by expert bodies alone, without the intervention of political bodies, and is binding upon States, unless the latter object with reason; and
      (c) new procedural rules, related to the pre- and post-lawmaking stages that enhance participation in the lawmaking process by both experts and the public and review the implementation, compliance and validity of science and technology of the laws, while at the same time guarantee all forms of legitimacy.  The Thesis does not aim to produce a countervailing lawmaking model. It rather attempts to optimize some of the lawmaking processes based on an enhanced science-base in order to better protect our global natural environment and public health.
Additional file 3 of Comparison of total joint arthroplasty outcomes between renal transplant patients and dialysis patients—a meta-analysis and systematic review
Creators: name: Li, Jiayi
name: Li, Mingyang
name: Peng, Bo-qiang
name: Luo, Rong
name: Chen, Quan
name: Huang, Xin
Publisher: name: figshare
Year: 2020
Subjects: subject: Space Science
subject: Medicine
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Marine Biology
subject: Science Policy

description: Additional file 3. Result of NOS.
Le statut du journaliste marocain dans la presse en ligne Du rédacteur au stratège
Creators: name: MUSTAPHA KRAT
Publisher: name: Zenodo
Year: 2025

description: Il s’agit dans cet article de voir comment le journaliste rédacteur marocain se transforme en stratège afin d’arriver à ses objectifs. Pour ce faire, nous avons choisi un corpus de trois articles tirés du journal marocain en ligne l’Economiste.com et abordant l’état d’immobilisme qui accompagne le processus de formation du gouvernement après les élections législatives de 2016. A travers un regard énonciatif, nous parvenons à repérer les indices de la présence de ce journaliste rédacteur marocain dans son discours. Ces traces, étant d’ordre linguistique et iconique, révèlent son attitude par rapport à lui-même et aussi à ses lecteurs. Ce qui prouve un certain positionnement face à l’évènement du retard qu’a connu le processus de formation du gouvernement.

Cet article est composé de trois axes logiquement articulés. Le premier axe porte sur le statut du journaliste marocain en tant que professionnel qui recherche et collecte les informations avant de passer à la rédaction. Le deuxième axe aborde son statut comme stratège qui précise, en rédigeant, un objectif et recourt à des stratégies discursives déterminées. Le dernier axe révèle son positionnement, à travers ses stratégies ou ses choix discursifs, face à l’évènement d’immobilisme politique qu’il traite. Le passage de ce journaliste de rédacteur au stratège montre combien il est capable de changer de statut en cherchant à atteindre ses buts.
Scientific Realism Made Effective: Realism, Reduction, and the Renormalization Group in Quantum Field Theory
Creators: Williams, Porter Doniphan
Publisher: name: Columbia University
Year: 2016
Subjects: subject: Quantum field theory
subject: Particles (Nuclear physics)--Philosophy
subject: Science--Philosophy
subject: Philosophy
subject: FOS: Philosophy, ethics and religion

description: This dissertation explores philosophical issues that arise in the practice of contemporary particle physics. The first chapter is a historical sketch of how the particle physics community came to believe that the quantum field theories used in particle physics are best understood as effective field theories -- quantum field theories that become inapplicable at some short distance scale and incorporate this inevitable breakdown in their mathematical framework. The second chapter argues that, contrary to the claims of many philosophers, the unique mathematical resources and empirical successes of effective field theories means that they can and should be equipped with a realist interpretation. The third chapter turns to an issue that has been at the center of particle physics for the last 40 years, the problem of naturalness, and draws on the renormalization group to provide a univocal understanding of ``naturalness'' that can make sense of the way it is employed in physical practice. Finally in the fourth chapter I critically examine recent philosophical work which argues that different physical scales in quantum field theory enjoy a sense of autonomy, arguing that the formal results on which this recent work is based cannot support the conclusions with which they have been saddled.
Entropy computing via integration over fractal measures
Creators: name: Slomczynski, Wojciech
name: Kwapien, Jaroslaw
name: Zyczkowski, Karol
Publisher: name: arXiv
Year: 1998
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: We discuss the properties of invariant measures corresponding to iterated function systems (IFSs) with place-dependent probabilities and compute their Renyi entropies, generalized dimensions, and multifractal spectra. It is shown that with certain dynamical systems one can associate the corresponding IFSs in such a way that their generalized entropies are equal. This provides a new method of computing entropy for some classical and quantum dynamical systems. Numerical techniques are based on integration over the fractal measures.
description: 14 pages in Latex, Revtex + 4 figures in .ps attached (revised version, new title, several changes, to appear in CHAOS)
Effective adsorption of dysprosium ions on amino and carboxyl functionalized mesoporous silica sheets
Creators: name: Kaneko, Takamasa
name: Hikosaka, Ryouichi
name: Fukue Nagata
name: Inagaki, Masahiko
name: Kato, Katsuya
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Biochemistry
subject: Neuroscience
subject: Biotechnology
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: Inorganic Chemistry
subject: 60506 Virology

description: Securing a stable supply of dysprosium (Dy) is one of the major problems facing the automotive industry due to increased Dy consumption and low-volume production. Investigations of new recycling methods are therefore extremely important. In this study, we focused on mesoporous silica particles (MPS) with tunable nanoscale mesopores (2–50 nm), large surface areas, high pore volumes, and abundant surface chemistry. To perform adsorption experiments with several metal ions in the solution, the silica materials were treated via amino functionalization using silane coupling reagents, 3-aminopropyltriethoxysilane (APTES), N-(2-aminoethyl)-3-aminopropyltriethoxysilane (N2APTES), and N-(6-aminohexyl)-3-aminopropyltrimethoxysilane (N6APTES), as well as via carboxyl functionalization using diglycolic acid. Interestingly, MPS sheet-2HNHCOOH, a product with a sheet-like morphology, exhibited enhanced Dy ion adsorption (13.3 µg/mg). The sheets retained approximately100% in the initial capacity after 10 cycles. The results suggest that MPS sheet-2HNHCOOH is an appropriate a candidate material for selective Dy ion adsorption.
Quantifying the levitation picture of extended states in lattice models
Creators: name: Pereira, Ana. L. C.
name: Schulz, P. A.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The behavior of extended states is quantitatively analyzed for two dimensional lattice models. A levitation picture is established for both white-noise and correlated disorder potentials. In a continuum limit window of the lattice models we find simple quantitative expressions for the extended states levitation, suggesting an underlying universal behavior. On the other hand, these results point out that the Quantum Hall phase diagrams may be disorder dependent.
description: 5 pages, submitted to PRB
Triumfetta brachyceras 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
Magnoliopsida
Malvales
Malvaceae
Triumfetta
Triumfetta brachyceras

description: Triumfetta brachyceras K.Schum.  —
Habit: Shrub.
Habitat: LMWF, LMDF; up to 2 700 m. Distribution: II.
 Voucher: Upper Imenti Forest, Alt. 2 448 m, 7 Aug. 2015, SAJIT 003177 (HIB).
References: Fries & Fries (1927b), Bussmann (1993, 1994), 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 63, DOI: 10.11646/phytotaxa.546.1.1, http://zenodo.org/record/6550464
Validity of the `Conservation Law' in the Evolution of Cosmological Perturbations
Creators: name: Goetz, Martin
Publisher: name: arXiv
Year: 1997
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: It is shown that the `conservation law' for metric fluctuations with long wavelengths is indeed applicable for growing modes of perturbations, which are of interest in cosmology, in spite of a recent criticism [L. P. Grishchuk, Preprint gr-qc/9511074, now published in N. Sanchez, A. Zichichi (eds.), `String Gravity and Physics at the Planck Scale', Kluwer, Dordrecht, p. 369 (1996)]. This is demonstrated both by general arguments, and also by presenting an explicitly solvable toy model for the evolution of metric perturbations during inflation.
description: 4 pages, 2 figures, uses epsf.sty and MNRAS style file mn.sty (to successfully print on American paper format use "dvips -t letter -O 0.25in,-0.5in".)
Triumfetta rhomboidea Jacq.
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
Triumfetta
Triumfetta rhomboidea

description: Triumfetta rhomboidea Jacq.  —
Habit: Shrub.
Habitat: LMWF, LMDF; up to 2 800 m. Distribution: I.
 Voucher: Chogoria Track, Alt. 1 860 m, 28 Jan. 2015, SAJIT 002974 (HIB).
References: Fries & Fries (1927b), Bussmann (1993, 1994), 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 63, DOI: 10.11646/phytotaxa.546.1.1, http://zenodo.org/record/6550464
title: Die Liberalisierung und Deregulierung der Strom- und Gasversorgung: Eine Reform vor der Entgleisung?
Creators: name: Kühne, Gunther
Publisher: name: Cramer
Year: 2009
Subjects: subject: Brunsvicensien der Universitätsbibliothek Braunschweig
subject: Jahrbuch der BWG
subject: 34

description: Über die vergangenen gut 10 Jahre hinweg haben wir sowohl auf europäischer als auch auf deutscher Ebene eine sich stetig beschleunigende Abfolge immer neuer Gesetzgebungsakte und sonstiger Regelungen für die leitungsgebundene Energieversorgung, d.h. für die Storm- und Gasversorgung, durchlaufen: in Europa die 1. Generation der europäischen Binnenmarkt-Richtlinien für Strom (1996) und für Gas (1998) und sodann die 2. Generation vom Juni 2003 für Strom und für Gas. Die 3. Generation, auch als 3. Liberalisierungspaket bezeichnet, befindet sich bereits im Endstadium der Beratungen und soll in der 1. Jahreshälfte 2009 endgültig verabschiedet werden. In Deutschland sind es das Energiewirtschaftsgesetz (EnWG) 1998, dessen kurzlebige und fehlgeschlagene Novellierung von 2003, sodann das neue – und jetzt noch geltende – EnWG 2005 sowie inzwischen eine Fülle von Rechtsverordnungen – jeweils getrennt für Strom und Gas: Netzanschlußverordnungen, Netzzugangsverordnungen, Netzentgeltverordnungen, neuestens darunter die am 01.01.2009 wirksam gewordene Anreizregulierungsverordnung, um nur die bekanntesten zu nennen. Um Sinn oder auch Unsinn all dieser Regelungen, die in ihrer Gesamtheit das ausmachen, was man den rechtlichen Ordnungsrahmen der leitungsgebundenen Energiewirtschaft nennt, zu erfassen, muß man sich vorab die Grundfrage stellen: Bedarf es für die Strom- und Gasversorgung überhaupt eines eigenständigen rechtlichen Ordnungsrahmens und wenn ja, aus welchem Grunde? Was unterscheidet Produktion, Transport und Vertrieb von Strom und Gas von der Herstellung, dem Transport und dem Vertrieb anderer Waren wie etwa Zahnpasta, Kinderspielzeug, Möbel, Maschinen? Hier gibt es ja auch keinen eigenständigen rechtlichen Ordnungsrahmen, den man Zahnpasta- oder Möbelrecht nennen könnte.
Vertrieb und Transport von Waren unterstehen üblicherweise dem allgemeinen rechtlichen Ordnungsrahmen. Dessen Mittelpunkt bildet das allgemeine Vertragsrecht einschließlich des Kauf- und Werkvertragsrechts des Bürgerlichen Gesetzbuches (BGB) mit seinen Spezialausprägungen im Handelsgesetzbuch (HGB). Hier kommt dem Grundsatz der Privatautonomie (Vertragsfreiheit) maßgebende Bedeutung zu. Die Sicherung des für unser Wirtschaftssystem prägenden, auch verfassungsrechtlich verankerten Wettbewerbsprizips gegenüber Verfälschungen und Mißbräuchen seitens der Marktteilnehmer ist die Aufgabe des Kartellrechts und der mit dessen Anwendung betrauten Kartellbehörden. Welche Gründe sind es dann, die für die Herausbildung eines eigenen Energie-(wirtschafts)rechts verantwortlich sind?
Increasing Permeability of the Intestinal Epithelium to Enable Oral Delivery of Protein Drugs
Creators: name: Lamson, Nicholas
Publisher: name: Carnegie Mellon University
Year: 2019
Subjects: subject: 90499 Chemical Engineering not elsewhere classified
subject: FOS: Chemical engineering

description: Oral delivery of macromolecular drugs, especially bioactive proteins, is one of the greatest unmet needs in modern biomedicine. Although engineering solutions have been developed to overcome low pH and enzymatic degradation in
the stomach, poor absorption across the intestinal epithelial barrier and into the bloodstream continues to hinder clinical viability of oral protein formulations. One common solution is to employ chemical permeation enhancers of the epithelium.
Unfortunately, most efficacious enhancers have been thwarted by toxicity, and the mechanisms that contribute to this behavior are poorly understood. Thus, there is
an ongoing need to develop and characterize nontoxic permeation enhancers. First, this work seeks to expedite cell culture screening for permeation enhancer candidates by reducing the cost- and time inputs required for Caco-2 cell monolayers, the most common model of the intestinal epithelium. A new, 3-day system deemed “thrifty, rapid intestinal monolayers” (TRIM) is developed, comparing favorably with two current monolayer systems. Next, the work explores the mechanism by which piperazines, a family of known permeation enhancers, interact with cells. Interestingly, the pH of the piperazine solutions presents as the controlling parameter, even when accounting
for effects from pH change alone. The piperazines nonetheless suffer from narrow therapeutic windows, underscoring the need for a new generation of enhancers
that do not permanently damage the intestines. The next portion of this work screens an extensive, food-based library for nontoxic but effective chemicals to improve intestinal protein absorption. Of 106 crude food extracts, the vast majority are not cytotoxic, and only a small fraction
increase epithelial permeability. An iterative separation-activity screening method is used to isolate a single, active compound: the polyphenolic molecule pelargonidin from strawberries. Pelargonidin is demonstrated as a reversible,
efficacious permeation enhancer, enabling uptake of model drugs and insulin through the intestinal lining. Finally, this work presents the surprising ability of anionic nanoparticles to act as physicochemical permeation enhancers. Orally administered silica particles induce dose-dependent permeabilization of the intestinal epithelium, allowing for
oral delivery of insulin and exenatide. Histology of treated mouse intestines shows no evidence of particle-induced necrosis, inflammation, or changes in tissue
architecture. These conclusive results underscore the ability of silica nanoparticles to safely increase epithelial permeability, enabling the oral delivery of macromolecular drugs without encapsulation or conjugation.
Peddiea fischeri Engl.
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
Thymelaeaceae
Peddiea
Peddiea fischeri

description: Peddiea fischeri Engl.  —
Habit: Small tree.
Habitat: LMWF; up to 2 500 m. Distribution: II.
 Voucher: Chogoria Track, Alt. 2 355 m, 28 Jan. 2015, SAJIT 002952 (HIB).
References: Fries (1923a), Bussmann (1993, 1994, 2006), Bussmann & Beck (1995a, 1995c, 1998, 1999).
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 63, DOI: 10.11646/phytotaxa.546.1.1, http://zenodo.org/record/6550464
Semiclassics for a Dissipative Quantum Map
Creators: name: Braun, Daniel
name: Braun, Petr A.
name: Haake, Fritz
Publisher: name: arXiv
Year: 1998
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We present a semiclassical analysis for a dissipative quantum map with an area-nonpreserving classical limit. We show that in the limit of Planck's constant to 0 the trace of an arbitrary natural power of the propagator is dominated by contributions from periodic orbits of the corresponding classical dissipative motion. We derive trace formulae of the Gutzwiller type for such quantum maps. In comparison to Tabor's formula for area-preserving maps, both classical action and stability prefactor are modified by the dissipation. We evaluate the traces explicitly in the case of a dissipative kicked top with integrable classical motion and find good agreement with numerical results.
description: 22 pages of revtex, 5 ps figures. Replaced with version accepted by Physica D. Minor misprints corrected and some notations simplified
S-duality Invariant Perturbations in String Cosmology
Creators: name: Copeland, E. J.
name: Lidsey, James E.
name: Wands, David
Publisher: name: arXiv
Year: 1997
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We investigate the generation of curvature and isocurvature (dilaton, moduli and axion) perturbations in a general class of axion-dilaton-moduli models,including the pre-big bang scenario. Allowing for an arbitrary coupling constant between the dilaton field and the axion field, we exploit the SL(2,R) symmetry of the theory to obtain the spectral indices of the field perturbations in a pre-big bang type scenario. Axion field fluctuations about a homogeneous background field can yield a scale-invariant (Harrison-Zel'dovich) spectrum. As an example we present a string-motivated case with SL(2,R)xSL(2,R) symmetry, where a second axion field arises from the compactification of the ten-dimensional theory to four dimensions.
description: 15 pages, no figures, plain LaTeX
Bond-randomness-induced Neel order in weakly coupled antiferromagnetic spin chains
Creators: name: Joshi, A.
name: Yang, Kun
Publisher: name: arXiv
Year: 2002
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Quasi-one-dimensional antiferromagnetic (AF) quantum spin systems show a wide range of interesting phenomena such as the spin-Peierls transition and disorder driven long range ordering. While there is no magnetic long range order in strictly one-dimensional systems, in real systems some amount of interchain coupling is always present and AF long range order may appear below a Neel ordering temperature T_N. We study the effect of bond randomness on Neel ordering in weakly coupled random AF S=1/2 chains both with and without dimerization (or spin-Peierls order). We use the real space renormalization group method to tackle the intrachain couplings, and a mean-field approximation to treat the interchain coupling. We show that in the non-dimerized chain, disorder (represented by bond randomness) enhances the Neel order parameter; in the dimerized chain which shows no magnetic ordering in the weak interchain coupling limit without randomness, disorder can actually lead to long range order. Thus disorder is shown to lead to, or enhance the tendency toward long range order, providing another example of the order-by-disorder phenomenon. We make a qualitative comparison of our results with the observed phenomenon of doping induced long range ordering in quasi-one-dimensional spin systems such as CuGeO_3.
description: 8 pages, 4 figures
Entropy Production : From Open Volume Preserving to Dissipative Systems
Creators: name: Gilbert, T.
name: Dorfman, J. R.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: We generalize Gaspard's method for computing the ε-entropy production rate in Hamiltonian systems to dissipative systems with attractors considered earlier by Tél, Vollmer, and Breymann. This approach leads to a natural definition of a coarse grained Gibbs entropy which is extensive, and which can be expressed in terms of the SRB measures and volumes of the coarse graining sets which cover the attractor. One can also study the entropy and entropy production as functions of the degree of resolution of the coarse graining process, and examine the limit as the coarse graining size approaches zero. We show that this definition of the Gibbs entropy leads to a positive rate of irreversible entropy production for reversible dissipative systems. We apply the method to the case of a two dimensional map, based upon a model considered by Vollmer, Tél and Breymann, that is a deterministic version of a biased-random walk. We treat both volume preserving and dissipative versions of the basic map, and make a comparison between the two cases. We discuss the ε-entropy production rate as a function of the size of the coarse graining cells for these biased-random walks and, for an open system with flux boundary conditions, show regions of exponential growth and decay of the rate of entropy production as the size of the cells decreases. This work describes in some detail the relation between the results of Gaspard, those of Tél, Vollmer and Breymann, and those of Ruelle, on entropy production in various systems described by Anosov or Anosov-like maps.
description: 30 pages + 20 figures, to appear in Journal of Statistical Physics
Capparis fascicularis var. elaeagnoides DeWolf
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
Brassicales
Capparaceae
Capparis
Capparis fascicularis
Capparis fascicularis dc. var. elaeagnoides (gilg) dewolf

description: Capparis fascicularis DC. var. elaeagnoides (Gilg) DeWolf  —
Habit: Shrub.
Habitat: LMDF; up to 2 000 m. Distribution: II.
Voucher: N/A.
Reference: Fries & Fries (1927b).
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 63, DOI: 10.11646/phytotaxa.546.1.1, http://zenodo.org/record/6550464