cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Hamiltonsche Bahnen ohne Zerspaltungseigenschaft. Die Loesung einer Aufgabe von M. G. Krein
Creators: name: Choroszavin, Sergej A.
Publisher: name: arXiv
Year: 1999
Subjects: subject: Dynamical Systems (math.DS)
subject: Mathematical Physics (math-ph)
subject: Representation Theory (math.RT)
subject: Spectral Theory (math.SP)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: There are constructed linear Hamiltonian (dynamical) systems such that their no nonzero trajectory has usual asymptotical dichotomy property. In particular there is solved (in the negative) one of the so-called M. G. Krein problem. In fact Definition: Let J be period-2 unitary operator and U be linear operator. If U^*JU = UJU^* = J then U is said to be J-unitary. KREIN Problem: given a J-unitary operator U, does there exist an U-invariant subspace L, say, with r(U|L)\leq1 ? In the special case that the operator U^*U-I is compact this problem was solved in the positive by M.G.Krein in 1964. We shall show that, by contrast, in the general case such a subspace L needs not exist. Moreover, there asserts Theorem: For every real c>0 there exists some J-unitary operator U such that (i) if L is some nonzero U-invariant subspace, then r(U|L)>c; (ii) if L' is some nonzero U^{-1}-invariant subspace, then r(U^{-1}|L')>c; This result applies both to the real space case and to the complex space case. In addition, one can assume that U is linear symplectic automorphism. A similar result is obtained for the case of continuous 'dynamic' and for the question: does there exist a nonzero quasistable manifold?
description: introduction, background and comments are extended, several propositions are added, Latex 2.09, in German, Journal-ref, e-mail: izvraen@ssu.samara.ru, http://www.mnu.samara.ru/~journal
Static shells for the Vlasov-Poisson and Vlasov-Einstein systems
Creators: name: Rein, Gerhard
Publisher: name: arXiv
Year: 1998
Subjects: subject: Mathematical Physics (math-ph)
subject: Analysis of PDEs (math.AP)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 85A05;35Q75

description: We prove the existence of static, spherically symmetric solutions of the stellar dynamic Vlasov-Poisson and Vlasov-Einstein systems, which have the property that their spatial support is a finite, spherically symmetric shell with a vacuum region at the center.
description: 14 pages, LaTeX
Nitrogen dioxide and ammonia gas molecules interaction studies on phosphorene nanosheet --- a DFT investigation
Creators: name: Nagarajan, V.
name: Chandiramouli, R.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The adsorption behaviour of hazardous gas molecules, namely nitrogen dioxide (NO$_2$) and ammonia (NH$_3$), on phosphorene nanosheet (PNS) was explored by means of ab initio technique. To improve the structural solidity of pristine PNS, we have introduced the passivation of hydrogen and fluorine at the terminated edge. The structural solidity of both hydrogen and fluorine passivated PNS is verified in terms of formation energy. The main objective of this research work is to probe NO$_2$ and NH$_3$ gases using PNS as a base sensing material. The adsorption of various preferential adsorption sites of these gas molecules is studied in accordance with the average HOMO-LUMO gap changes, natural-bond-orbital (NBO) charge transfer, HOMO-LUMO gap, and adsorption energy. Notably, the negative value of adsorption energy is found upon the adsorption of NO$_2$ and NH$_3$ on PNS and it is in the range of $-1.36$ to $-2.45$ eV. The findings of the present research work recommend that the hydrogenated and fluorinated PNS can be effectively used as a chemical sensor against NO$_2$ and NH$_3$ molecules.
description: 15 pages, 21 figures, 2 tables
Data compression and learning in time sequences analysis
Creators: name: Puglisi, A.
name: Benedetto, D.
name: Caglioti, E.
name: Loreto, V.
name: Vulpiani, A.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Chaotic Dynamics (nlin.CD)
subject: Genomics (q-bio.GN)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: Motivated by the problem of the definition of a distance between two sequences of characters, we investigate the so-called learning process of typical sequential data compression schemes. We focus on the problem of how a compression algorithm optimizes its features at the interface between two different sequences $A$ and $B$ while zipping the sequence $A+B$ obtained by simply appending $B$ after $A$. We show the existence of a universal scaling function (the so-called learning function) which rules the way in which the compression algorithm learns a sequence $B$ after having compressed a sequence $A$. In particular it turns out that it exists a crossover length for the sequence $B$, which depends on the relative entropy between $A$ and $B$, below which the compression algorithm does not learn the sequence $B$ (measuring in this way the relative entropy between $A$ and $B$) and above which it starts learning $B$, i.e. optimizing the compression using the specific features of $B$. We check the scaling function on three main classes of systems: Bernoulli schemes, Markovian sequences and the symbolic dynamic generated by a non trivial chaotic system (the Lozi map). As a last application of the method we present the results of a recognition experiment, namely recognize which dynamical systems produced a given time sequence. We finally point out the potentiality of these results for segmentation purposes, i.e. the identification of homogeneous sub-sequences in heterogeneous sequences (with applications in various fields from genetic to time-series analysis).
description: 15 pages, 6 figures, submitted for publication
Increasing Physical Activity in Elementary School Classrooms
Creators: Hecht, Mindy Feldman
Publisher: name: Columbia University
Year: 2020
Subjects: Health education
School recess breaks
Minority students
Low-income students
Physical education for children

description: The benefits of physical activity (PA) for children are well-researched and extend into the realms of physical health, mental health and executive function (EF). Nonetheless, most U.S. children fail to meet the recommended target of daily PA. Although elementary schools can provide an ideal setting for PA, school-based PA time has been reduced in favor of increased sedentary instructional time. This contradicts research that supports the role of PA in enhancing students’ EF and academic achievement. Moreover, low-income and minority populations have inequitable access to school-based PA opportunities. For these reasons, researchers and public health officials have proposed integrating additional opportunities for PA during the school day, including classroom-based active breaks. This dissertation aims to study existing U.S. classroom-based active break programs, examine the feasibility of implementing a classroom-based active break program and analyze the impact of an integrated program on both PA and EF, all among underserved, minority populations. This dissertation includes four chapters in total. The second chapter is a systematic review that evaluated the impact of school-based PA interventions on children’s PA, with a focus on diverse populations. The third chapter describes a pilot study that assessed the feasibility of implementing a classroom PA program (HYPE) in a diverse urban setting. Teacher and student acceptability of HYPE were evaluated, as well as HYPE’s impact on student PA. HYPE was feasible and well-received, although time and space were challenges. Children’s median step count/day increased. The waitlist-control study presented in Chapter IV examined whether a multifaceted program (“POWER”) that incorporates both PA and EF would impact fifth graders positively. We also investigated whether POWER could assist teachers with classroom behavioral management. Overall, the positive changes in the intervention group and their favorable reception of POWER demonstrate the ability of POWER to improve children’s socioemotional, mental and physical health. Altogether, these studies highlight the potential for school-based PA interventions to improve the holistic wellbeing of children, particularly low-income, minority youth. Interventions that incorporate a teacher-led, multimodal approach to improving children’s PA and EF synergistically may be well-received by administrators, teachers and students and help children adopt healthy, lifelong habits.
Biphenylyl-1,2,4-oxadiazole based liquid crystals – synthesis, mesomorphism, effect of lateral monofluorination
Creators: name: Fouad, Farid S.
name: Ness, Todd
name: Kunlun Wang
name: Ruth, Christopher E.
name: Britton, Sonia
name: Twieg, Robert J.
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Biophysics
subject: Medicine
subject: Pharmacology
subject: Biotechnology
subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Aiming at developing a new type of materials for functional applications, three series of new compounds were prepared, 3-(biphenylyl)-1,2,4-oxadiazoles, Series I; laterally mono-fluorinated 3-(biphenylyl)-1,2,4-oxadiazoles, Series II; and 5-(biphenylyl)-1,2,4-oxadiazoles, Series III. Liquid crystalline properties of these compounds were studied using differential scanning calorimetry and polarizing optical microscopy. Ten of the thirteen compounds in Series I are mesogenic forming either N or SmA phases depending on the length-to-width molecular ratio. Mesogens of the positional isomers, Series III are both N and SmA. Monofluorination of the biphenylyl group at either the central or the terminal phenylene rings, Series III, resulted in the formation of nematic mesogens with low phase transition temperatures and broad nematic phase range.
Coordinate Conditions and Their Implementation in 3D Numerical Relativity
Creators: name: Balakrishna, Jayashree
name: Daues, Gregory
name: Seidel, Edward
name: Suen, Wai-Mo
name: Tobias, Malcolm
name: Wang, Edward
Publisher: name: arXiv
Year: 1996
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We put forth a few ideas on coordinate conditions and their implementation in numerical relativity. Coordinate conditions are important for the long time scale simulations of relativistic systems, e.g., for the determination of gravitational waveforms from astrophysical events to be measured by LIGO/VIRGO. We demonstrate the importance of, and propose methods for, the {\it active enforcement} of coordinate properties. In particular, the constancy of the determinant of the spatial 3-metric is investigated as such a property. We propose an exceedingly simple but powerful idea for implementing elliptic coordinate conditions that not only makes possible the use of complicated elliptic conditions, but is also {\it orders of magnitude} more efficient than existing methods for large scale 3D simulations.
description: 10 pages, 3 postscript figures
Moving Frames Hierarchy and BF Theory
Creators: name: Lee, Jyh-Hao
name: Pashaev, Oktay K.
Publisher: name: arXiv
Year: 1997
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: We show that the one-dimensional projection of Chern-Simons gauged Nonlinear Schrodinger model is equivalent to an Abelian gauge field theory of continuum Heisenberg spin chain. In such a theory, the matter field has geometrical meaning of coordinates in tangent plane to the spin phase space, while the U(1) gauge symmetry relates to rotation in the plane. This allows us to construct the infinite hierarchy of integrable gauge theories and corresponding magnetic models. To each of them a U(1) invariant gauge fixing constraint of non-Abelian BF theory is derived. The corresponding moving frames hierarchy is obtained and the spectral parameter is interpreted as a constant-valued statistical gauge potential constrained by the 1-cocycle condition.
description: 28 pages, Tex, no figures
Bell Mine closure plan
Creators: name: McArthur, D. Ross
name: Gallinger, Ross
Publisher: name: The University of British Columbia
Year: 2010

description: A comprehensive Closure Plan was developed for the Bell Mine which ensured minimal post-closure environmental impacts and public safety. Since much of the information required to develop closure scenarios was not available, a major task in the development of the plan was collecting, collating and interpreting factual data from several studies including hydrology, hydrogeology and the aquatic environment. The key issues identified to be addressed in the closure design were: thorough assessment of mine rock and tailings geochemistry; prediction of long-term water chemistry; establishment of historical and existing environmental conditions in the vicinity of Bell Mine; and environmental assessment of the closure approach. It is determined that the onset of net acidic conditions in mine rock, not presently generating acid, is estimated to be in the order of 20 to 30 years. The water management system is designed to discharge runoff with acceptable water quality either by surface or submerged outfall into Babine Lake. If metal concentrations in these flows increase subsequently to unacceptable levels for safe release into Babine Lake, these flows will be directed into the open pit. When the pit fills to capacity, in approximately 50 years, the pit water may require treatment prior to release into Babine Lake. A lime neutralization treatment plant will be constructed 3 years prior to attaining the maximum storage in the pit. Reclamation and réhabilitation activities focus on integrating the landscape to wildlife habitat. Removal of equipment, infrastructure and development of revegetation programs using proven grass and legumes assist in achieving this objective.
The Regge trajectories and leptonic widths of the vector $s\bar s$ mesons
Creators: name: Badalian, A. M.
name: Bakker, B. L. G.
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The spectrum of the $s\bar s$ mesons is studied performing a phenomenological analysis of the Regge trajectories defined for the excitation energies. For the $ϕ(3 ^3S_1)$ state the mass $M(ϕ(3S))=2100(20)$ MeV and the leptonic width $Γ_{ee}(ϕ(3S))=0.27(2)$ keV are obtained, while the mass of the $2 ^3D_1$ state, $M(ϕ(2 ^3D_3))=2180(5)$ MeV, appears to be in agreement with the mass of the $ϕ(2170)$ resonance, and its leptonic width, $Γ_{ee}(2 ^3D_1)=0.20\pm 0.10$ keV, has a large theoretical uncertainty, depending on the parameters of the flattened confining potential.
description: 7 pages, no figures
From the Hands of an Early Adopter's Avatar to Virtual Junkyards: Analysis of Virtual Goods' Lifetime Survival
Creators: name: Bortko, Kamil
name: Pazura, Patryk
name: Hamari, Juho
name: Bartków, Piotr
name: Jankowski, Jarosław
Publisher: name: arXiv
Year: 2019
Subjects: subject: Social and Information Networks (cs.SI)
subject: FOS: Computer and information sciences

description: One of the major questions in the study of economics, logistics, and business forecasting is the measurement and prediction of value creation, distribution, and lifetime in the form of goods. In "real" economies, a perfect model for the circulation of goods is impossible. However, virtual realities and economies pose a new frontier for the broad study of economics, since every good and transaction can be accurately tracked. Therefore, models that predict goods' circulation can be tested and confirmed before their introduction to "real life" and other scenarios. The present study is focused on the characteristics of early-stage adopters for virtual goods, and how they predict the lifespan of the goods. We employ machine learning and decision trees as the basis of our prediction models. Results provide evidence that the prediction of the lifespan of virtual objects is possible based just on data from early holders of those objects. Overall, communication and social activity are the main drivers for the effective propagation of virtual goods, and they are the most expected characteristics of early adopters.
description: 28 pages
Seeing the forest for the trees: What contract override looks like in Canadian libraries
Creators: Amanda Wakaruk, Rowena Johnson
Publisher: name: University of Alberta Library
Year: 2023

Slides from a presentation at the Ontario Library Association Copyright Symposium 2023.

Session abstract:

This session will share practical examples of contracts that are considered to override statutory user rights provided in Canadian law. Participants will be invited to discuss how things like contract terms, copyright chill, and risk aversion might impact their work, the work of their libraries, and library users.
Supplementary Material
Creators: name: Putaud, Thomas
name: Chartrand, Jean-Claude
name: Kalugina, Yulia
name: Michaut, Xavier
name: Roy, Pierre-Nicholas
name: Ayotte, Patrick
Publisher: name: AIP Publishing
Year: 2025
Subjects: classificationCode: 51
subject: Physical sciences
subject: FOS: Physical sciences

description: Supplementary material for Putaud et al., manuscript JCP24-AR-05465
Modeling the thermal stratification of water filled mine pits
Creators: name: Stevens, Craig
name: Lawrence, Gregory A.
name: Rogers, Christopher K.
name: Hamblin, P. F.
Publisher: name: The University of British Columbia
Year: 2010

description: Meromixis, where a stratified body of water rarely mixes completely throughout its depth, is considered beneficial for containment of undesirable chemical species in water filled abandoned mine pits. Here we discuss a modeling effort examining the development of the thermal stratification in such a body of water. The model is a simple algorithm based on a one dimensional diffusion equation. The heat fluxes and boundary conditions are discussed as well as the mechanisms affecting turbulent diffusion and penetration of the mixed layer. This is especially important in the prediction of possible fall and spring overturns. The model is described in the context of the Brenda Mines Pit near Peachland. The temperature data does not strongly indicate meromixis, however, dissolved oxygen measurements show there might be a barrier to vertical penetration of heat and momentum.
A Supersymmetry approach to billiards with randomly distributed scatterers
Creators: name: Stoeckmann, H. -J.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: The density of states for a chaotic billiard with randomly distributed point-like scatterers is calculated, doubly averaged over the positions of the impurities and the shape of the billiard. Truncating the billiard Hamiltonian to a N x N matrix, an explicit analytic expression is obtained for the case of broken time-reversal symmetry, depending on rank N of the matrix, number L of scatterers, and strength of the scattering potential. In the strong coupling limit a discontinuous change is observed in the density of states as soon as L exceeds N.
Increasing Diversity: Modeling of Social Capital for Navigating the Science and Health Professions Pipeline
Creators: Rumala, Bernice B.
Publisher: name: Columbia University
Year: 2012
Subjects: subject: Mathematics
subject: FOS: Mathematics
subject: Science--Study and teaching
subject: Medical sciences

description: Social capital theory states that resources, both actual and prospective, are inherently linked to networks and relationships that can be used as opportunities. Therefore, a basic tenet of social capital theory is that "relationships matter." In the science and health profession pipeline, strong mentoring relationships and collaborative research networks are critical elements in developing an individual's capacity for navigating the pipeline and for success and advancement in these fields. However, underrepresented minorities are often bereft of social capital because they lack proper mentorships and are often not part of "inner" circles for networking. Additionally, social capital can be leveraged to develop organizational capacity that supports diversity. In this dissertation, social capital theory is examined through the lens of three pipeline initiatives targeting pre-high school, high school, undergraduate, and graduate-level populations. The three initiatives (E-matching, achieving Successful Productive Academic Research Careers, and Mentoring in Medicine) were evaluated and the results are presented here as three related but unique manuscripts. The particular forms of social capital examined are knowledge, mentorship, and networks needed to navigate the pipeline for science and health professions careers. All three initiatives had significant impact on increasing social capital via the social capital indicators of increased knowledge, mentorship, networks, information and resources. Study results suggest that it would be useful to replicate these initiatives on a larger scale to build social capital at earlier levels of the pipeline to enhance diversity in the science and health professions. Additionally, study results suggest that the social capital obtained from brief interactions in short duration initiatives is valuable as a factor in assisting students to navigate the pipeline; therefore this should not be underestimated. Lastly, a logic model framework is provided for measuring social capital for navigating the STEM and health professions pipeline.
Invariants for Correlations of Velocity Differences in Turbulent Fields
Creators: name: L'vov, Victor S.
name: Podivilov, Evgenii
name: Procaccia, Itamar
Publisher: name: arXiv
Year: 1997
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: The phenomenology of the scaling behavior of higher order structure functions of velocity differences across a scale $R$ in turbulence should be built around the irreducible representations of the rotation symmetry group. Every irreducible representation is associated with a scalar function of $R$ which may exhibit different scaling exponents. The common practice of using moments of longitudinal and transverse fluctuations mixes different scalar functions and therefore may mix different scaling exponents. It is shown explicitly how to extract pure scaling exponents for correlations functions of arbitrary orders.
description: REVTeX, 3 pages. Online (HTML) version of the paper available at http://lvov.weizmann.ac.il/onlinelist.html
MPEC 2024-C170 : 2024 CL5
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2024
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2024 CL5

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Feedback Stabilization for a coupled PDE-ODE Production System
Creators: name: Baumgärtner, Vanessa
name: Göttlich, Simone
name: Knapp, Stephan
Publisher: name: arXiv
Year: 2019
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics
subject: 65Mxx, 93D05, 90B30

description: We consider an interlinked production model consisting of conservation laws (PDE) coupled to ordinary differential equations (ODE). Our focus is the analysis of control laws for the coupled system and corresponding stabilization questions of equilibrium dynamics in the presence of disturbances. These investigations are carried out using an appropriate Lyapunov function on the theoretical and numerical level. The discrete $L^2-$stabilization technique allows to derive a mixed feedback law that is able to ensure exponential stability also in bottleneck situations. All results are accompanied by computational examples.
description: 18 pages
A categorification of the Jones polynomial
Creators: name: Khovanov, Mikhail
Publisher: name: arXiv
Year: 1999
Subjects: subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics
subject: 57M25

description: We construct a bigraded cohomology theory of links whose Euler characteristic is the Jones polynomial.
description: latex, 51 pages, 72 eps figures, to appear in Duke Mathematical Journal
Symmetry-breaking signatures of multiple Majorana zero modes in one-dimensional spin-triplet superconductors
Creators: name: Ray, Arnab Barman
name: Sau, Jay D.
name: Mandal, Ipsita
Publisher: name: arXiv
Year: 2019
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study the effects of various symmetry-breaking perturbations on the experimentally measurable signatures (such as conductance and Josephson response) of quasi-one-dimensional (quasi-1D) spin-triplet superconductors. In the first part of the paper, we numerically compute the zero and nonzero temperature conductances of the quasi-1D nanowires that host multiple Majorana zero modes. Following the discussion of the case of s-wave Rashba nanowires, we shift to the main focus, i.e., multichannel spin-triplet superconductors. Applying gate voltages (which changes the symmetry of the spin-orbit coupling) as well as magnetic fields to the nanowire, tunes the system between different symmetry classes by splitting the multiple Majorana zero modes. We study how the conductance tracks the topological invariants and the spectra in all these cases. In the second part of the paper, we study the effects of the symmetry-induced spectrum-breaking on the Andreev spectra of Josephson junctions. Similar to the case of the conductance studies, we find that the spectrum shows multiple zero-energy Andreev bound states in the highly symmetric case with mirror and chiral symmetries.
description: journal version published in PRB
title: Hyacinthus non-scripta (L.) Chouard ex Rothm.
Creators: name: :None
Publisher: name: Universitätsbibliothek
Year: 2009
Subjects: subject: Digitale Pflanzenbilder : Sammlung Dietmar Brandes
subject: 580

description: Pflanzensammlung Dietmar Brandes: Digitale Pflanzenbilder
Additional file 10 of Incidence and outcomes of acute respiratory distress syndrome in intensive care units of mainland China: a multicentre prospective longitudinal study
Creators: name: Huang, Xu
name: Zhang, Ruoyang
name: Fan, Guohui
name: Wu, Dawei
name: Lu, Haining
name: Wang, Daoxin
name: Deng, Wang
name: Sun, Tongwen
name: Xing, Lihua
name: Liu, Shaohua
name: Wang, Shilei
name: Cai, Ying
name: Tian, Ye
name: Zhang, Yi
name: Xia, Jingen
name: Zhan, Qingyuan
Publisher: name: figshare
Year: 2020
Subjects: subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Science Policy
subject: Mental Health
subject: Hematology

description: Additional file 10: eTable 5. Fluid balance of acute respiratory distress syndrome patients.
Spatio-temporal Chaos and Vacuum Fluctuations of Quantized Fields
Creators: name: Beck, Christian
Publisher: name: arXiv
Year: 2002
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: We consider deterministic chaotic models of vacuum fluctuations on a small (quantum gravity) scale. As a suitable small-scale dynamics, nonlinear versions of strings, so-called `chaotic strings' are introduced. These can be used to provide the `noise' for second quantization of ordinary strings via the Parisi- Wu approach of stochastic quantization. Extensive numerical evidence is presented that the vacuum energy of chaotic strings is minimized for the numerical values of the observed standard model parameters, i.e. in this extended approach to second quantization concrete predictions for vacuum expectations of dilaton-like fields and hence on masses and coupling constants can be given. Low-energy fermion and boson masses are correctly obtained with a precision of 3-4 digits, the electroweak and strong coupling strengths with a precision of 4-5 digits. In particular, the minima of the vacuum energy yield high-precision predictions of the Higgs mass (154 GeV), of the neutrino masses (1.45E-5 eV, 2.57E-3 eV, 4.92E-2 eV) and of the GUT scale (1.73E16 GeV).
description: 50 pages, 4 figures. This is the electronic version of preface, introduction, summary and bibliography of the book with the same title by C. Beck (World Scientific, Singapore, 2002)
Geometry of dynamics and phase transitions in classical lattice phi^4 theories
Creators: name: Caiani, Lando
name: Casetti, Lapo
name: Clementi, Cecilia
name: Pettini, Giulio
name: Pettini, Marco
name: Gatto, Raoul
Publisher: name: arXiv
Year: 1997
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Chaotic Dynamics (nlin.CD)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We perform a microcanonical study of classical lattice phi^4 field models in 3 dimensions with O(n) symmetries. The Hamiltonian flows associated to these systems that undergo a second order phase transition in the thermodynamic limit are here investigated. The microscopic Hamiltonian dynamics neatly reveals the presence of a phase transition through the time averages of conventional thermodynamical observables. Moreover, peculiar behaviors of the largest Lyapunov exponents at the transition point are observed. A Riemannian geometrization of Hamiltonian dynamics is then used to introduce other relevant observables, that are measured as functions of both energy density and temperature. On the basis of a simple and abstract geometric model, we suggest that the apparently singular behaviour of these geometric observables might probe a major topological change of the manifolds whose geodesics are the natural motions.
description: REVTeX, 15 PostScript figures, published version
On the reduction of required motions in the dynamic analysis using an optimization-based spectral matching
Creators: name: Harati, Mojtaba
name: Mashayekhi, Mohammadreza
name: Mohammadnezhad, Hamid
name: Jaberi, Hanieh
name: Estekanchi, Homayoon E.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: This study aims to show the efficiency of a proposed spectral matching technique for the reduction of required ground motions in the dynamic time history analysis. In this non-stationary spectral matching approach, unconstrained optimization is employed to adjust the signal to match a target spectrum. Adjustment factors of discrete wavelet transform (DWT) coefficients associated with the signals are then considered as decision variables and the Levenberg-Marquardt algorithm is employed to find the optimum values of DWT coefficients. This matching algorithm turns out to be quite effective in the spectral matching objective, where matching at multiple damping ratios can be readily achieved. First, the efficiency of the spectral matching procedure is investigated in a case study earthquake record and then compared with two conventional spectral matching methods. Results show considerable improvement in the matching accuracy which is accompanied by minimal changes in shaking characteristics of the original signal. In addition, it is shown that earthquake records matched with the proposed method can noticeably reduce the essential number of ground motions that are normally required for the dynamic analysis of a case study model. In this regard, it has been found that we can reduce the number of required motions by more than 80% when matched motions are selected to be used as the seismic inputs for the dynamic analysis.
description: It has been submitted to the Journal of Engineering Structures (JES)
title: Hylomecon japonica (Thunb. ex Murray) Prantl & Kündig
Creators: name: :None
Publisher: name: Universitätsbibliothek
Year: 2009
Subjects: subject: Digitale Pflanzenbilder : Sammlung Dietmar Brandes
subject: 580

description: Pflanzensammlung Dietmar Brandes: Digitale Pflanzenbilder
The Kolmogorov-Sinai Entropy for Dilute Gases in Equilibrium
Creators: name: van Beijeren, H.
name: Dorfman, J. R.
name: Posch, H. A.
name: Dellago, Ch.
Publisher: name: arXiv
Year: 1997
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: We use the kinetic theory of gases to compute the Kolmogorov-Sinai entropy per particle for a dilute gas in equilibrium. For an equilibrium system, the KS entropy, h_KS is the sum of all of the positive Lyapunov exponents characterizing the chaotic behavior of the gas. We compute h_KS/N, where N is the number of particles in the gas. This quantity has a density expansion of the form h_KS/N = aν[-\ln{\tilde{n}} + b + O(\tilde{n})], where νis the single-particle collision frequency and \tilde{n} is the reduced number density of the gas. The theoretical values for the coefficients a and b are compared with the results of computer simulations, with excellent agreement for a, and less than satisfactory agreement for b. Possible reasons for this difference in b are discussed.
description: 15 pages, 2 figures, submitted to Phys. Rev. E
Excited state properties of polycyclic hydrocarbons based dyes
Creators: name: Klysko, Yu. V.
name: Syrotyuk, S. V.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: In this paper we present a comprehensive ab initio study of polycyclic hydrocarbons based dyes. The purpose of the work is to obtain electronic properties of the materials which are supposed to be used in organic electronic devices. The list of materials includes violanthrone (di-benzanthrone) derivatives which are already known as industrial organic dyes. First, we have obtained ground-state properties by performing ab initio eigenvalue calculation within generalized gradient approximation (GGA). Then, Green's function method has been used in order to obtain excited state properties. The exciton eigenvalues, as well as imaginary part of dielectric function (DF) and density of states (DOS), have been evaluated from the Bethe-Salpeter equation (BS). The electronic properties obtained here are in good agreement with available experimental data.
description: 5 pages, 2 figures, 1 table
COPIL and TPI-ILI follow up and reflection for Evidence Based Practice Mentoring and Peer Observation Program
Creators: name: Buxton, Kristin
name: Oberlies, Mary
name: Zeidman-Karpinski, Annie
Publisher: name: figshare
Year: 2019
Subjects: subject: Library and Information Studies
subject: FOS: Media and communications

description: Reflection template for use with COPIL and TPI-ILI
Independent Effects of Paternal Age and Neuregulin1 Expression in Mice in Relation to Schizophrenia
Creators: El-Amamy, Heather
Publisher: name: Columbia University
Year: 2014
Subjects: subject: Neurosciences
subject: FOS: Clinical medicine

description: This thesis work is divided into two parts, both guided by the overwhelming evidence that hereditary factors influence neurodevelopment. The first section is focused on advanced paternal age, which may modulate an offspring's place on the continuum of normal behavior, as well as conferring increased risk for the development of certain disorders, such as schizophrenia. By using a mouse model to examine the difference between old and young father offspring, we have been able to flesh out this phenotype. Additionally, by examining the female and male offspring separately, we discovered gender-specific differences between the groups. Ongoing work is seeking to identify changes in methylation between the old and young father offspring that may explain these differences. The second section deals with a specific gene that has been linked to schizophrenia, namely Neuregulin1. This gene plays several roles in neurodevelopement, notably including the proliferation of interneurons and their incorporation into the cortex and olfactory bulb. We used heterozygous mice to explore the effects of a change in gene expression of the proliferation of new neurons from the subventricular zone, their migration through the rostral migratory stream, and differentiation into various interneuron subtypes in the olfactory bulb. The heterozygotes appeared to have decreased turnover of a subset of calretinin-expressing interneurons of the granule cell layer. We also treated subgroups of these mice with clozapine, however this did not seem to have any effect. We looked at the olfactory system in this work since this is a model of neurogenesis that continues into adulthood. Yet the regions that produce cortical interneurons during early development give rise to the subventricular zone. Therefore the findings related to subventricular zone neurogenesis may have similar implications for cortical development.
Additional file 7 of LINC00022 acts as an oncogene in colorectal cancer progression via sponging miR-375-3p to regulate FOXF1 expression
Creators: name: Xu, Lingling
name: He, Hongmei
name: Shang, Yu
name: Qu, Xiaona
name: Sun, Jinghua
Publisher: name: figshare
Year: 2022
Subjects: subject: Biochemistry
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Physiology
subject: Pharmacology
subject: Chemical Sciences not elsewhere classified
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Cancer

description: Additional file 7: Supplementary figure S7d. The original blot images of Fig. 7d.
Exact solutions of an elliptic Calogero--Sutherland model
Creators: name: Gomez-Ullate, D.
name: Gonzalez-Lopez, A.
name: Rodriguez, M. A.
Publisher: name: arXiv
Year: 2000
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: A model describing N particles on a line interacting pairwise via an elliptic function potential in the presence of an external field is partially solved in the quantum case in a totally algebraic way. As an example, the ground state and the lowest excitations are calculated explicitly for N=2.
description: 4 pages, 3 figures, typeset with RevTeX 4b3 and AMS-LaTeX
title: Development & Analysis of Novel Tetrazole Ligands for Iron(II) Spin-Crossover Complexes
Creators: name: Schnizer, Julian
Publisher: name: TU Wien
Year: 2025
Subjects: subject: iron(II)
subject: tetrazole
subject: spin crossover

description: Arbeit an der Bibliothek noch nicht eingelangt - Daten nicht geprueft - gesperrte Arbeit (bis 2027-03-01+01:00)
description: Abweichender Titel nach Übersetzung der Verfasserin/des Verfassers
Universal spectral statistics of Andreev billiards: semiclassical approach
Creators: name: Gnutzmann, Sven
name: Seif, Burkhard
name: von Oppen, Felix
name: Zirnbauer, Martin R.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Condensed Matter (cond-mat)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: The classification of universality classes of random-matrix theory has recently been extended beyond the Wigner-Dyson ensembles. Several of the novel ensembles can be discussed naturally in the context of superconducting-normal hybrid systems. In this paper, we give a semiclassical interpretation of their spectral form factors for both quantum graphs and Andreev billiards.
description: final improved version (to be published in Physical Review E), 6 pages, revtex4
Additional file 2 of LINC00022 acts as an oncogene in colorectal cancer progression via sponging miR-375-3p to regulate FOXF1 expression
Creators: name: Xu, Lingling
name: He, Hongmei
name: Shang, Yu
name: Qu, Xiaona
name: Sun, Jinghua
Publisher: name: figshare
Year: 2022
Subjects: subject: Biochemistry
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Physiology
subject: Pharmacology
subject: Chemical Sciences not elsewhere classified
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Cancer

description: Additional file 2: Supplementary figure S2d. The original blot images of Fig. 2d.
Indian Slaves from Caribana: Trade and Labor in the Seventeenth-Century Caribbean
Creators: Arena, Carolyn Marie
Publisher: name: Columbia University
Year: 2017
Subjects: Indian slaves
Slave trade
Slavery
History
Indigenous peoples

description: Indigenous resistance made Caribbean colonization a slow and violent process in the period of 1580-1690. The Caribbean Indians who rejected colonization became targets for enslavement. Slavers captured indigenous people in raids or through trade within indigenous-dominated territories. I conceptualize this space as "Caribana." Geographically, it stretched from Guiana northward throughout islands of the Lesser Antilles. I focus on the Indigenous captives from Caribana who were enslaved in English and Dutch colonies, namely Barbados, Curaçao, and Suriname. I show how colonists justified enslaving indigenous people in the same manner as they justified the trans-Atlantic African slave trade, despite widespread taboos against the former practice and not the latter. These taboos did not prevent Indian slavery, but they influenced the creation of seventeenth-century histories, government reports, and other material for public and European consumption. Indian slavery has thus been written about, then and now, as a limited phenomenon wherein Indians had limited and specific labor roles (i.e. as fishermen or domestic servants). However, sources such as deeds and tax-rolls show that more Indian slaves than assumed contributed a broad range of skills to plantations economies. English Barbados was exceptionally successful because it was geographically separated from the conflicts that created captives in Caribana, but nevertheless extracted Indian slaves from the region. Meanwhile, colonies abutting Caribana, such as Suriname, faced trade sanctions from neighboring Indians and rebellions if they abused the Indian slave trade. From the 1670s-1690s, Colonial governments limited the means of accessing Indian slaves, but once enslaved, they faced the same restrictive "black codes" that allowed the brutal treatment of them as inheritable chattel.
title: Iraq’s 2018 Elections and Beyond: Party Attitudes and Possible Future Politics
Creators: name: Jakob, Thomas
Publisher: name: Philipps-Universität Marburg
Year: 2019
Subjects: Naher Osten
Naher und Mittlerer Osten
Middle East (Near East)
Wahl
Parteiensystem

description: • More than a year after the federal elections of 2018, Iraq’s ethno-sectarian political system and the increased fragmentation of the spectrum of political parties still hamper any attempt to form a government and implement broader staffing policies. • Under the new government, however, there is unlikely to be any substantial attempt to address the ethno-sectarian proportional system or issues around federalization. This is because no majority for such reforms could be created. • Popular demands, as well as the structure of the party system, have largely centered around issues of security and demilitarisation, reconstruction, and the lack of public services in the aftermath of the fight against ISIS. • Before and after the election, the sectarian divide within Iraq remains the dominant driver of voting decisions. That said, a more nationalistic rhetoric has been invoked by the parties and rewarded by voters. • Leading political players have distanced themselves from foreign influence. This is due to a growing popular aversion to foreign intervention. Despite this, Iranian influence in Iraq will remain strong due to political, security-related, and economic dependencies.
Indicators of Success for Contentious Preservation Campaigns
Creators: Walsh, Ryan
Publisher: name: Columbia University
Year: 2013
Subjects: Architecture--Preservation
Historic preservation
Cultural property--Protection

description: Success of contentious campaigns advocating for the preservation of a threatened building is characterized by six indicators: (1) leadership, (2) conductivity, (3) numinosity, (4) publicity, (5) legal acuity, and (6) capital. This thesis identifies and defines the indicators through three case studies [Grand Central Terminal, City & Suburban Homes, and 2 Columbus Circle] and examines their future role in an evolving presimosphere. These six indicators can be used as a checklist, rubric, or quantitative estimator, thus offering campaign leaders additional information to aid in the development of their strategies and communication plans.
Large deviation and anomalous fluctuations scaling in degree assortativity on configuration networks
Creators: name: Chen, Hanshuang
name: Huang, Feng
name: Shen, Chuansheng
name: Li, Guofeng
name: Zhang, Haifeng
Publisher: name: arXiv
Year: 2019
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: By constructing a multicanonical Monte Carlo simulation, we obtain the full probability distribution $ρ_N(r)$ of the degree assortativity coefficient $r$ on configuration networks of size $N$ by using the multiple histogram reweighting method. We suggest that $ρ_N(r)$ obeys a large deviation principle, $ρ_N \left(r-r_N^* \right) \asymp {e^{ - {N^ξ}I\left( {r- r_N^* } \right)}}$, where the rate function $I$ is convex and possesses its unique minimum at $r=r_N^*$, and $ξ$ is an exponent that scales $ρ_N$'s with $N$. We show that $ξ=1$ for Poisson random graphs, and $ξ\geq1$ for scale-free networks in which $ξ$ is a decreasing function of the degree distribution exponent $γ$. Our results reveal that the fluctuations of $r$ exhibits an anomalous scaling with $N$ in highly heterogeneous networks.
description: 9 pages, 9 figures
Turbulent-like Diffusion in Complex Quantum Systems
Creators: name: Kusnezov, Dimitri
name: Bulgac, Aurel
name: Dang, Gui Do
Publisher: name: arXiv
Year: 1997
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study a quantum particle propagating through a ``quantum mechanically chaotic'' background, described by parametric random matrices with only short range spatial correlations. The particle is found to exhibit turbulent-like diffusion under very general situations, without the apriori introduction of power law noise or scaling in the background properties.
description: 9 pages, Revtex
Multiplet Classification of Reducible Verma Modules over the $G_2$ Algebra
Creators: name: Dobrev, V. K.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Representation Theory (math.RT)
subject: FOS: Mathematics

description: In the present paper we continue the project of systematic construction of invariant differential operators on the example of the non-compact algebra $G_{2(2)}$ which is split real form of $G_2$. We give the classification of reducible Verma modules $G_2$. We give also the singular vectors between these modules, thus setting the stage for construction of the invariant differential operators over $G_{2(2)}$.
description: 9 pages, 7 figures, Invited talk at the XXXII International Colloquium on Group Theoretical Methods in Physics (Prague, July 2018); session dedicated to I.E. Segal (1918-1998)