cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Noncommutative Geometry and Spacetime Gauge Symmetries of String Theory
Creators: name: Lizzi, Fedele
name: Szabo, Richard J.
Publisher: name: arXiv
Year: 1997
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Quantum Algebra (math.QA)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We illustrate the various ways in which the algebraic framework of noncommutative geometry naturally captures the short-distance spacetime properties of string theory. We describe the noncommutative spacetime constructed from a vertex operator algebra and show that its algebraic properties bear a striking resemblence to some structures appearing in M Theory, such as the noncommutative torus. We classify the inner automorphisms of the space and show how they naturally imply the conventional duality symmetries of the quantum geometry of spacetime. We examine the problem of constructing a universal gauge group which overlies all of the dynamical symmetries of the string spacetime. We also describe some aspects of toroidal compactifications with a light-like coordinate and show how certain generalized Kac-Moody symmetries, such as the Monster sporadic group, arise as gauge symmetries of the resulting spacetime and of superstring theories.
description: 17 pages LaTeX; Invited paper to appear in the special issue of the Journal of Chaos, Solitons and Fractals on "Superstrings, M, F, S, ... Theory" (M.S. El Naschie and C. Castro, editors)
MODELING NATURAL GAS HYDRATE EMPLACEMENT: A MIXED FINITE-ELEMENT FINITE-DIFFERENCE SIMULATOR
Creators: name: Schnurle, Philippe
name: Liu, Char-Shine
name: Wang, Yunshuen
Publisher: name: The University of British Columbia
Year: 2008

description: Gas hydrates are ice-like crystalline solids composed of a hydrogen bonded water lattice entrapping low-molecular weighted gas molecules commonly of methane. These form under conditions of relative high pressure and low temperature, when the gas concentration exceeds those which can be held in solution, both in marine and on-land permafrost sediments. Simulating the mechanisms leading to natural gas hydrate emplacement in geological environments requires the modeling of the temperature, the pressure, the chemical reactions, and the convective/diffusive flow of the reactive species. In this study, we take into account the distribution of dissolved methane, methane gas, methane hydrate, and seawater, while ice and water vapor are neglected. The starting equations are those of the conservation of the transport of momentum (Darcy’s law), energy (heat balance of the passive sediments and active reactive species), and mass. These constitutive equations are then integrated into a 2-dimentional finite element in space, finite-difference in time scheme. In this study, we are able to examine the formation and distribution of methane hydrate and free gas in a simple geologic framework, with respect to geothermal gradient, dewatering and fluid flow, the methane in-situ production and basal flux. The temperature and pressure fields are mildly affected by the hydrate emplacement. The most critical parameter in the model appears to be the methane (L+G) and hydrate (L+G+H) solubility: the decrease in methane solubility beneath the base of the hydrate stability zone (BHSZ) critically impacts on the presence of free gas at the base of the BHSZ (thus the presence of a BSR), while the sharp decrease of hydrate solubility above the BHSZ up to the sea bottom critically impact on the amount of methane available for hydrate emplacement and methane seep into the water column.
Room-temperature dislocation plasticity in ceramics: Methods, Materials, and Mechanisms
Creators: name: Frisch, Alexander
name: Okafor, Chukwudalu
name: Preuß, Oliver
name: Zhang, Jiawen
name: Matsunaga, Katsuyuki
name: Nakamura, Atsutomo
name: Lu, Wenjun
name: Fang, Xufei
Publisher: name: arXiv
Year: 2025
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Dislocation-mediated plastic deformation in ceramic materials has sparked renewed research interest due to the technological potential of dislocations. Despite the long research history of dislocations as one-dimensional lattice defects in crystalline solids, the understanding of plastically deformable ceramics at room temperature seems lacking. The conventional view holds that ceramics are brittle, difficult to deform at room temperature and exhibit no dislocation plasticity except in small-scale testing such as nanoindentation and nano-micropillar compression. In this review, we attempt to gather the evidence and reports of room-temperature dislocation plasticity in ceramics beyond the nano-/microscale, with a focus on meso-macroscale plasticity. First, we present a mechanical deformation toolbox covering various experimental approaches for assessing the dislocation plasticity, with a focus on bulk plasticity. Second, we provide a materials toolbox listing 44 ceramic compounds that have been reported to exhibit dislocation plasticity at meso-/macroscale under ambient conditions. Finally, we discuss the mechanics of dislocations in ceramics, aiming to establish a foundation for predicting and discovering additional ceramics capable of room-temperature plastic deformation, thereby advancing the development of prospective dislocation-based technologies.
Change your identity and fit in: an empirical examination of ownership structure change, firm performance and local knowledge spillovers in China
Creators: name: Shengjun Zhu
name: Canfei He
name: Xuqian Hu
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences

description: This paper evaluates the effectiveness of China’s reform of state-owned enterprises (SOEs) by exploring if reformed SOEs have genuinely changed their identity and fitted in. Using a firm-level data set, we show that reformed SOEs have learned more from non-SOEs about how to promote economic performance. Empirical results also confirm that the effectiveness of the SOE reform is contingent on regional institutional contexts. Finally, this research contributes to the existing literature by bringing firm’s financial performance to the forefront, and pointing out that knowledge spillovers derived from non-SOEs have impacts on the financial performance of reformed SOEs.
title: Lactuca perennis
title: Blauer Lattich (Lactuca perennis)
titleType: AlternativeTitle
Creators: name: Schulz, Herbert
Publisher: name: Universitätsbibliothek Braunschweig
Year: 2006
Subjects: subject: Diasammlung Herbert Schulz
subject: 580

description: Enthält 7 Bilder des Blauen Lattichs.
The Lanczos Algorithm Under Few Iterations: Concentration and Location of the Output
Creators: name: Garza-Vargas, Jorge
name: Kulkarni, Archit
Publisher: name: arXiv
Year: 2019
Subjects: subject: Numerical Analysis (math.NA)
subject: Data Structures and Algorithms (cs.DS)
subject: Functional Analysis (math.FA)
subject: Probability (math.PR)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: We study the Lanczos algorithm where the initial vector is sampled uniformly from $\mathbb{S}^{n-1}$. Let $A$ be an $n \times n$ Hermitian matrix. We show that when run for few iterations, the output of Lanczos on $A$ is almost deterministic. More precisely, we show that for any $ \varepsilon \in (0, 1)$ there exists $c >0$ depending only on $\varepsilon$ and a certain global property of the spectrum of $A$ (in particular, not depending on $n$) such that when Lanczos is run for at most $c \log n$ iterations, the output Jacobi coefficients deviate from their medians by $t$ with probability at most $\exp(-n^\varepsilon t^2)$ for $t 0$. Then we show that for large enough $n$, and for $k=O(\sqrt{\log n})$, the Jacobi coefficients output after $k$ iterations concentrate around those for $μ$. The asymptotic setting is relevant since Lanczos is often used to approximate the spectral density of an infinite-dimensional operator by way of the Jacobi coefficients; our result provides some theoretical justification for this approach. In a different direction, we show that Lanczos fails with high probability to identify outliers of the spectrum when run for at most $c' \log n$ iterations, where again $c'$ depends only on the same global property of the spectrum of $A$. Classical results imply that the bound $c' \log n$ is tight up to a constant factor.
description: v2: A detailed discussion of the motivation and relevance of the main results and definitions has been added. Minor corrections have been made. 38 pages, 3 figures
The Meeting of Acquaintances: A Cost-efficient Authentication Scheme for Light-weight Objects with Transient Trust Level and Plurality Approach
Creators: name: Dang, Tran Khanh
name: Tran, Khanh T. K.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: Wireless sensor networks consist of a large number of distributed sensor nodes so that potential risks are becoming more and more unpredictable. The new entrants pose the potential risks when they move into the secure zone. To build a door wall that provides safe and secured for the system, many recent research works applied the initial authentication process. However, the majority of the previous articles only focused on the Central Authority (CA) since this leads to an increase in the computation cost and energy consumption for the specific cases on the Internet of Things (IoT). Hence, in this article, we will lessen the importance of these third parties through proposing an enhanced authentication mechanism that includes key management and evaluation based on the past interactions to assist the objects joining a secured area without any nearby CA. We refer to a mobility dataset from CRAWDAD collected at the University Politehnica of Bucharest and rebuild into a new random dataset larger than the old one. The new one is an input for a simulated authenticating algorithm to observe the communication cost and resource usage of devices. Our proposal helps the authenticating flexible, being strict with unknown devices into the secured zone. The threshold of maximum friends can modify based on the optimization of the symmetric-key algorithm to diminish communication costs (our experimental results compare to previous schemes less than 2000 bits) and raise flexibility in resource-constrained environments.
description: 27 pages
A kinetic CMA diagram
Creators: name: Li, Zilong
name: Chen, Haotian
name: Gao, Zhe
name: Chen, Wei
Publisher: name: arXiv
Year: 2025
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: We present a kinetic Clemmow-Mullaly-Allis (CMA) diagram by systematically analysing the kinetic effects on the wave propagation in a homogeneous thermal plasma. The differences between the cold and kinetic CMA diagrams are outlined. It is found that new boundaries for weakly damped left- and right-handed circularly polarized waves are located above the ion and electron cyclotron frequency lines in the kinetic CMA diagram. Additionally, Langmuir waves in the kinetic CMA diagram occupy a specific region between the new Langmuir wave boundary and the plasma frequency line, while in the cold CMA diagram, they exist on the plasma frequency line. The extraordinary-Bernstein mode transformation frequency lines in the kinetic CMA diagram replace the hybrid resonant frequency lines of the cold CMA diagram, with discontinuities between different cyclotron harmonics. These new boundaries partition the parameter space in the kinetic CMA diagram differently, leading to new inverse wave normal surfaces in the regions bounded by new boundaries. The kinetic CMA diagram not only contributes to a basic understanding of wave properties in thermal plasmas, but also can provide a powerful tool to explore new possible propagation paths.
Lanthanoid coordination with a tetrazole-substituted calix[4]diquinone and calix[4]dihydroquinone
Creators: name: Cameron, Lee
name: Rajagopalan, Aswin
name: Galan, Laura Abad
name: Phe, Rene Z.H.
name: Skelton, Brian W.
name: Massi, Massimiliano
name: Ogden, Mark I.
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Biophysics
subject: Biochemistry
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Molecular Biology
subject: Neuroscience
subject: Physiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Computational Biology

description: The tetrazole-functionalised calixdiquinone 5,17-di-tert-butyl-26,28-bis-(1H-tetrazole-5-ylmethoxy)-calix[4]-25,27-diquinone Q was synthesised by chemical oxidation of the bis-tetrazole calix[4]arene precursor using PbO2/HClO4. The single crystal X-ray structure determination of Q confirmed the structure and showed binding of a water molecule in the solid state. Chemical reduction of Q to the dihydroquinone QR was achieved using N,N-diethylhydroxylamine. Comparison of the solution phase photophysical properties of Q or QR in the presence of terbium ions showed significant excitation only with QR, suggesting redox switching of the photophysical response may be possible with this or similar receptor.
Additional file 12: of Long noncoding RNA CCDC144NL-AS1 knockdown induces naĂŻve-like state conversion of human pluripotent stem cells
Creators: name: Wang, Yingying
name: Guo, Baosen
name: Xiao, Zengrong
name: Lin, Haijun
name: Zhang, Xi
name: Song, Yueqiang
name: Li, Yalei
name: Gao, Xuehu
name: Yu, Jinjun
name: Shao, Zhihua
name: Li, Xuekun
name: Luo, Yuping
name: Li, Siguang
Publisher: name: figshare
Year: 2019
Subjects: subject: Biophysics
subject: Biochemistry
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Physiology
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Cancer
subject: Mental Health
subject: Hematology

description: Figure S7. Functional categories of genes from CCDC144NL-AS1-KD human PSC-specific MEblue module and upregulated enrichment of respiratory chain in CCDC144NL-AS1-KD-H9 by GSEA. a GO analyses of MEblue module genes. b The enriched upregulated respiratory chain by gene set enrichment analysis (GSEA) in CCDC144NL-AS1-KD-H9 cells relative to NC-H9 cells. Vertical black bars represent the position of genes involved in the respiratory chain. (PDF 439 kb)
The ARAUCARIA project: Deep near-infrared survey of nearby galaxies. I. The distance to the Large Magellanic Cloud from K-band photometry of red clump stars
Creators: name: Pietrzynski, G.
name: Gieren, W.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have obtained deep imaging in the near-infrared J and K bands for 2 nearby fields in the bar of the LMC with the ESO NTT telescope, under exquisite seeing conditions. The K, J-K color-magnitude diagrams constructed from these data are of outstanding photometric quality and reveal the presence of several hundreds of red clump stars. Using the calibration of Alves for the K-band absolute magnitude of Hipparcos-observed red clump stars in the solar neigbourhood we derive a distance modulus to our observed LMC fields of 18.487 mag. Applying a correction for the tilt of the LMC bar with respect to the line of sight according to the geometrical model of van der Marel et al., the corresponding LMC barycenter distance is 18.501 mag. If we adopt a K-band population correction of -0.03 mag, as done by Alves et al. 2002, to account for the difference in age and metallicity between the solar neighborhood and LMC red clump star populations, we obtain an LMC barycenter distance modulus of 18.471 mag from our data. This is in excellent agreement with the result of Alves et al., and of another very recent study of Sarajedini et al. (2002) obtained from K-band photometry. However, we emphasize that current model predictions about the uncertainties of population corrections seem to indicate that errors up to about 0.12 mag may be possible, probably in any photometric band. Therefore, work must continue to tighten the constraints on these corrections. We also determine the mean red clump star magnitude in our LMC fields in the J band, which could be a useful alternative to the K band should future work reveal that population effect corrections for red clump stars in the J band are smaller, or more reliably determined than those for the K band.
description: 14 pages, Latex. Accepted for publication in The Astronomical Journal, November, 2002
A neural network oracle for quantum nonlocality problems in networks
Creators: name: Kriváchy, Tamás
name: Cai, Yu
name: Cavalcanti, Daniel
name: Tavakoli, Arash
name: Gisin, Nicolas
name: Brunner, Nicolas
Publisher: name: arXiv
Year: 2019
Subjects: subject: Quantum Physics (quant-ph)
subject: Machine Learning (cs.LG)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Characterizing quantum nonlocality in networks is a challenging, but important problem. Using quantum sources one can achieve distributions which are unattainable classically. A key point in investigations is to decide whether an observed probability distribution can be reproduced using only classical resources. This causal inference task is challenging even for simple networks, both analytically and using standard numerical techniques. We propose to use neural networks as numerical tools to overcome these challenges, by learning the classical strategies required to reproduce a distribution. As such, the neural network acts as an oracle, demonstrating that a behavior is classical if it can be learned. We apply our method to several examples in the triangle configuration. After demonstrating that the method is consistent with previously known results, we give solid evidence that the distribution presented in [N. Gisin, Entropy 21(3), 325 (2019)] is indeed nonlocal as conjectured. Finally we examine the genuinely nonlocal distribution presented in [M.-O. Renou et al., PRL 123, 140401 (2019)], and, guided by the findings of the neural network, conjecture nonlocality in a new range of parameters in these distributions. The method allows us to get an estimate on the noise robustness of all examined distributions.
description: This is a pre-print of an article published in npj Quantum Information. The final authenticated version is available online at: https://doi.org/10.1038/s41534-020-00305-x Implementation can be found at: https://github.com/tkrivachy/neural-network-for-nonlocality-in-networks
Application of the group-theoretical method to physical problems
Creators: name: Abd-el-malek, Mina B.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: The concept of the theory of continuous groups of transformations has attracted the attention of applied mathematicians and engineers to solve many physical problems in the engineering sciences. Three applications are presented in this paper. The first one is the problem of time-dependent vertical temperature distribution in a stagnant lake. Two cases have been considered for the forms of the water parameters, namely water density and thermal conductivity. The second application is the unsteady free-convective boundary-layer flow on a non-isothermal vertical flat plate. The third application is the study of the dispersion of gaseous pollutants in the presence of a temperature inversion. The results are found in closed form and the effect of parameters are discussed.
M2KD: Multi-model and Multi-level Knowledge Distillation for Incremental Learning
Creators: name: Zhou, Peng
name: Mai, Long
name: Zhang, Jianming
name: Xu, Ning
name: Wu, Zuxuan
name: Davis, Larry S.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Incremental learning targets at achieving good performance on new categories without forgetting old ones. Knowledge distillation has been shown critical in preserving the performance on old classes. Conventional methods, however, sequentially distill knowledge only from the last model, leading to performance degradation on the old classes in later incremental learning steps. In this paper, we propose a multi-model and multi-level knowledge distillation strategy. Instead of sequentially distilling knowledge only from the last model, we directly leverage all previous model snapshots. In addition, we incorporate an auxiliary distillation to further preserve knowledge encoded at the intermediate feature levels. To make the model more memory efficient, we adapt mask based pruning to reconstruct all previous models with a small memory footprint. Experiments on standard incremental learning benchmarks show that our method preserves the knowledge on old classes better and improves the overall performance over standard distillation techniques.
Self-similar spreading in a merging-splitting model of animal group size
Creators: name: Liu, Jian-Guo
name: Niethammer, Barbara
name: Pego, Robert L.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 45J05, 70F45, 92D50, 37L15, 44A10, 35Q99

description: In a recent study of certain merging-splitting models of animal-group size (Degond et al., J. Nonl. Sci. 27 (2017) 379), it was shown that an initial size distribution with infinite first moment leads to convergence to zero in weak sense, corresponding to unbounded growth of group size. In the present paper we show that for any such initial distribution with a power-law tail, the solution approaches a self-similar spreading form. A one-parameter family of such self-similar solutions exists, with densities that are completely monotone, having power-law behavior in both small and large size regimes, with different exponents.
description: 27 pages
title: Mycelis muralis
title: Mauerlattich (Mycelis muralis)
titleType: AlternativeTitle
Creators: name: Schulz, Herbert
Publisher: name: Universitätsbibliothek Braunschweig
Year: 2006
Subjects: subject: Diasammlung Herbert Schulz
subject: 580

description: Enthält 5 Bilder des Mauerlattichs.
Essays in Spatial Economics
Creators: Dingel, Jonathan
Publisher: name: Columbia University
Year: 2014
Subjects: Economics

description: A central concern in international economics and urban economics is explaining the distributions of economic assets and activity across space. This dissertation contains three essays examining the pattern of specialization across US cities.
      Chapter 1 investigates the determinants of quality specialization within products. A growing literature suggests that high-income countries export high-quality goods. Two hypotheses may explain such specialization, with different implications for welfare, inequality, and trade policy. Fajgelbaum, Grossman, and Helpman (2011) formalize the Linder (1961) conjecture that home demand determines the pattern of specialization and therefore predict that high-income locations export high-quality products. The factor-proportions model also predicts that skill-abundant, high-income locations export skill-intensive, high-quality products (Schott, 2004). Prior empirical evidence does not separate these explanations. I develop a model that nests both hypotheses and employ microdata on US manufacturing plants' shipments and factor inputs to quantify the two mechanisms' roles in quality specialization across US cities. Home-market demand explains at least as much of the relationship between income and quality as differences in factor usage.
      In Chapter 2, Donald R. Davis and I develop a theory to jointly explain the distributions of skills, occupations, and industries across cities. Our model incorporates a system of cities, their internal urban structures, and a high-dimensional theory of factor-driven comparative advantage. It predicts that larger cities will be skill-abundant and specialize in skill-intensive activities according to the monotone likelihood ratio property. We test the model using data on 270 US metropolitan areas, 3 to 9 educational categories, 22 occupations, and 21 manufacturing industries. The results provide support for our theory's predictions.
      Chapter 3 examines whether larger cities are attractive to consumers. Popular and academic discussions celebrate the virtues of large cities for consumption and leisure. But the standard spatial-equilibrium account says that the consumer attractions of larger cities cannot account for their higher nominal wages and more skilled populations. This chapter revisits that conclusion and shows that the consumption motive can play a first-order role in spatial variation in wage distributions when individuals are heterogeneous. I present a general-equilibrium model in which larger cities offer a greater variety of local goods and services, attracting higher-income individuals who value such variety relatively more. Despite the absence of production-related agglomeration economies, the equilibrium outcomes match a series of facts about spatial variation in wage distributions. I present evidence on the spatial choices of retirees, who consume but do not produce, that is consistent with consumption-driven agglomeration.
Lattice models for protein organization throughout thylakoid membrane stacks
Creators: name: Rosnik, Andreana M.
name: Geissler, Phillip L.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Biological Physics (physics.bio-ph)
subject: Subcellular Processes (q-bio.SC)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: Proteins in photosynthetic membranes can organize into patterned arrays that span the membrane's lateral size. Attractions between proteins in different layers of a membrane stack can play a key role in this ordering, as was suggested by microscopy and fluorescence spectroscopy and demonstrated by computer simulations of a coarse-grained model. The architecture of thylakoid membranes, however, also provides opportunities for inter-layer interactions that instead disfavor the high protein densities of ordered arrangements. Here we explore the interplay between these opposing driving forces, and in particular the phase transitions that emerge in the periodic geometry of stacked thylakoid membrane discs. We propose a lattice model that roughly accounts for proteins' attraction within a layer and across the stromal gap, steric repulsion across the lumenal gap, and regulation of protein density by exchange with the stroma lamellae. Mean field analysis and computer simulation reveal rich phase behavior for this simple model, featuring a broken-symmetry striped phase that is disrupted at both high and low extremes of chemical potential. The resulting sensitivity of microscopic protein arrangement to the thylakoid's mesoscale vertical structure raises intriguing possibilities for regulation of photosynthetic function.
title: Lactuca virosa
title: Gift-Lattich (Lactuca virosa)
titleType: AlternativeTitle
Creators: name: Schulz, Herbert
Publisher: name: Universitätsbibliothek Braunschweig
Year: 2006
Subjects: subject: Diasammlung Herbert Schulz
subject: 580

description: Enthält 2 Bilder des Gift-Lattichs.
title: Lactuca serriola
title: Kompaß-Lattich (Lactuca serriola)
titleType: AlternativeTitle
Creators: name: Schulz, Herbert
Publisher: name: Universitätsbibliothek Braunschweig
Year: 2006
Subjects: subject: Wilder Lattich
subject: Diasammlung Herbert Schulz
subject: 580

description: Enthält 5 Bilder des Kompaß-Lattichs.
Strepsichordaia lendenfeldi BERGQUIST ET AL. 1988
Creators: name: Wahab, Muhammad Azmi Abdul
name: Wilson, Nerida G.
name: Prada, Diana
name: Gomez, Oliver
name: Fromont, Jane
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Porifera
Demospongiae
Dictyoceratida
Thorectidae
Strepsichordaia
Strepsichordaia lendenfeldi

description: STREPSICHORDAIA LENDENFELDI BERGQUIST ET AL., 1988
(FIGS 9G, H, 10A–D, 11A–G)
 Material examined
Fifteen specimens, including holotype, paratype, ethanol-preserved specimens, slides, DNA and photographs (see Supporting Information, Material S 1 for the detailed metadata). Holotype AM Z5026, Davies Reef, Great Barrier Reef (18°49.024’S, 147°37.939’E), 15–20 m. Paratype AM Z5027, Davies Reef (18°49.024’S, 147°37.939’E), 15–20 m.
description: Published as part of Wahab, Muhammad Azmi Abdul, Wilson, Nerida G., Prada, Diana, Gomez, Oliver & Fromont, Jane, 2021, Molecular and morphological assessment of tropical sponges in the subfamily Phyllospongiinae, with the descriptions of two new species, pp. 319-355 in Zoological Journal of the Linnean Society 193 on page 347
Berikashvili's functor D and the deformation equation
Creators: name: Huebschmann, Johannes
Publisher: name: arXiv
Year: 1999
Subjects: subject: Algebraic Topology (math.AT)
subject: Commutative Algebra (math.AC)
subject: Algebraic Geometry (math.AG)
subject: Category Theory (math.CT)
subject: FOS: Mathematics
subject: 13D10 14J32 16S80 17B56 17B65 17B70 17B81 53C05 55P62 55R15 55R20 55S40 81T70

description: Berikashvili's functor D defined in terms of twisting cochains is related to deformation theory, gauge theory, Chen's formal power series connections, and the master equation in physics. The idea is advertised that some unification and understanding of the links between these topics is provided by the notion of twisting cochain and the idea of classifying twisting cochains.
description: 12 pages, AMSTeX 2.1, Berikashvili-Festschrift, Proc. Razmadze Institute (to appear)
Optimal Bounds on State Transfer Under Quantum Channels with Application to Spin System Engineering
Creators: name: Zheng, Wenqiang
name: Wang, Hengyan
name: Xin, Tao
name: Nie, Xinfang
name: Lu, Dawei
name: Li, Jun
Publisher: name: arXiv
Year: 2019
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Modern applications of quantum control in quantum information science and technology require the precise characterization of quantum states and quantum channels. In particular, high-performance quantum state engineering often demands that quantum states are transferred with optimal efficiency via realizable controlled evolution, the latter often modeled by quantum channels. When an appropriate quantum control model for an interested system is constructed, the exploration of optimal bounds on state transfer for the underlying quantum channel is then an important task. In this work, we analyze the state transfer efficiency problem for different class of quantum channels, including unitary, mixed unitary and Markovian. We then apply the theory to nuclear magnetic resonance (NMR) experiments. We show that two most commonly used control techniques in NMR, namely gradient field control and phase cycling, can be described by mixed unitary channels. Then we show that employing mixed unitary channels does not extend the unitarily accessible region of states. Also, we present a strategy of optimal experiment design, which incorporates coherent radio-frequency field control, gradient field control and phase cycling, aiming at maximizing state transfer efficiency and meanwhile minimizing the number of experiments required. Finally, we perform pseudopure state preparation experiments on two- and three-spin systems, in order to test the bound theory and to demonstrate the usefulness of non-unitary control means.
description: 11 pages, 8 figures
Additional file 1 of Association of liver dysfunction with outcomes after percutaneous coronary intervention – a systematic review and meta-analysis
Creators: name: Caldonazo, Tulio
name: Kirov, Hristo
name: Tasoudis, Panagiotis
name: Franz, Marcus
name: Richter, Markus
name: Mukharyamov, Murat
name: Zipprich, Alexander
name: Shana’ah, Ahmad
name: Haji, Diyar
name: Doenst, Torsten
Publisher: name: figshare
Year: 2024
Subjects: subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Physiology
subject: Chemical Sciences not elsewhere classified
subject: Sociology
subject: FOS: Sociology
subject: Immunology
subject: FOS: Clinical medicine

description: Supplementary Material 1
Central Pontine Myelinolysis, Osmotic Demyelination Syndrome Due to Rapidly Decreased Fluid Intake in a Schizophrenic Patient with Psychogenic Polydipsia: A Case report and Review of The Literature
Creators: name: Alsaid, Hamza
Publisher: name: figshare
Year: 2019
Subjects: subject: 110904 Neurology and Neuromuscular Diseases
subject: FOS: Clinical medicine
subject: 110310 Intensive Care

description: Central pontine myelinolysis is a rare entity of osmotic demyelinating disease that mostly affects the basis pontis in brainstem. The clinical picture of central pontine myelinolysis can be variable and mixed, manifestations such as pseudobulbar palsy, various degrees of spastic paraparesis and tetraparesis, ataxia and diminished deep tendon reflexes can all occur. Etiology of central pontine myelinolysis has been reported to be mostly attributed by rapid changes in serum osmolality. Magnetic Resonance Imaging is the only way to confirm the diagnosis of central pontine myelinolysis. In this report, we describe an unusual case of central pontine myelinolysis in a 39 years old male patient who had a long-standing history of psychogenic polydipsia, compulsive water intake associated with schizophrenia that was referred to our hospital for deteriorating level of consciousness and generalized weakness after a sudden decrease in his oral water intake and sudden withdrawal of lithium treatment. We review this uncommon etiology of central pontine myelinolysis in the patient as well as pathophysiological mechanisms involved.
title: Leucanthemopsis alpina
title: Alpen-Wucherblume (Leucanthemopsis alpina)
titleType: AlternativeTitle
Creators: name: Schulz, Herbert
Publisher: name: Universitätsbibliothek Braunschweig
Year: 2006
Subjects: subject: Alpen-Margerite
subject: Zwerg-Margerite
subject: Diasammlung Herbert Schulz
subject: 580

description: Enthält 21 Bilder der Alpen-Wucherblume.
title: QM-Systeme in Entwicklung: Change (or) Management?
title: Tagungsband der 15. Jahrestagung des Arbeitskreises Evaluation und Qualitätssicherung der Berliner und Brandenburger Hochschulen am 2./3. März 2016 , Freie Universität Berlin. Redaktion: Sabine Boomers, Sabine Hahn, Judith Ölbey. Gestaltung und Layout: Alexander Goldbeck-Löwe
titleType: Subtitle
Creators: name: (:Unkn) Unknown
Publisher: name: Freie Universität Berlin
Year: 2017
Subjects: subject: Change Management
subject: Evaluation
subject: Hochschule
subject: Internationalisierung
subject: interne Akkreditierung
subject: Joint Programmes Kooperationen
subject: Lehre
subject: Operationalisierung
subject: Qualitätsmanagement
subject: Qualitätskulturinventar
subject: Systemakkreditierung
subject: 300 Sozialwissenschaften::370 Bildung und Erziehung::370 Bildung und Erziehung

description: Am 2. und 3. März 2015 veranstaltete der Arbeitskreis Evaluation und Qualitätssicherung der Berliner und Brandenburger Hochschulen unter dem Titel „QM-Systeme in Entwicklung: Change (or) Management?“ seine nunmehr 15. Jahrestagung. Das Tagungsthema stieß auf eine hohe Resonanz und so begrüßte die Freie Universität Berlin als austragende Hochschule rund 240 Teilnehmerinnen und Teilnehmer aus dem gesamten Bundesgebiet zu einem inhaltlich wie organisatorisch abwechslungsreichen Programm. Im Rahmen von sechs themenbezogenen Foren stellten ausgewiesene Expertinnen und Experten in Impulsvorträgen wissenschaftliche Erkenntnisse und praktische Erfahrungen zu aktuellen konzeptionellen, fachlichen und strukturellen Fragen des Qualitätsmanagements vor und diskutierten diese anschließend mit den Tagungsteilnehmenden. Daneben nahmen die Hochschulen des Arbeitskreises das 15. Jubiläum der Jahrestagung zum Anlass, den Stand ihrer QM-Systeme in Werkstattberichten in Form einer Posterausstellung darzustellen. Der vorliegende Tagungsband stellt die Inputs und Ergebnisse der Konferenz einer breiten Fachcommunity zur Verfügung und ergänzt so die vorhandenene Online- Dokumentation auf der Homepage des Arbeitskreises (http://ak- evaluation.de/tagung/2015/qm-systeme-in-entwicklung-change-or-management).
Additional file 4: of Long noncoding RNA CCDC144NL-AS1 knockdown induces naĂŻve-like state conversion of human pluripotent stem cells
Creators: name: Wang, Yingying
name: Guo, Baosen
name: Xiao, Zengrong
name: Lin, Haijun
name: Zhang, Xi
name: Song, Yueqiang
name: Li, Yalei
name: Gao, Xuehu
name: Yu, Jinjun
name: Shao, Zhihua
name: Li, Xuekun
name: Luo, Yuping
name: Li, Siguang
Publisher: name: figshare
Year: 2019
Subjects: subject: Biochemistry
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Hematology
subject: Infectious Diseases
subject: FOS: Health sciences

description: Figure S1. Functional categories of genes from three human PSC-specific modules enriched by WGCNA. a WGCNA dendogram indicating expression of different gene modules in all 55 samples. b-d Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) analyses of genes in MEred (b), MElightcyan (c), and MEpurple (d) modules. e List of pluripotency-associated genes in PGM module. (PDF 3714 kb)
$g/u(1)^d$ parafermions from constrained WZNW theories
Creators: name: Bratchikov, A. V.
Publisher: name: arXiv
Year: 1997
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Quantum Algebra (math.QA)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: The conformal field theory based on the $g/u(1)^d$ coset construction is treated as the WZNW theory for the affine Lie algebra $\hat g$ with the constrained $\hat u(1)^d$ subalgebra.Using a modification of the generalized canonical quantization method generators and primary fields of an extended symmetry algebra are found for arbitrary d.
description: 14 pages,latex,misprints in formulas 26,40,45 corrected,a reference added
Hadron-Deuteron Correlations and Production of Light Nuclei in Relativistic Heavy-Ion Collisions
Creators: name: Mrowczynski, Stanislaw
name: Slon, Patrycja
Publisher: name: arXiv
Year: 2019
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The production of light nuclei in relativistic heavy-ion collisions is well described by both the thermal model, where light nuclei are in equilibrium with all other hadron species present in a fireball, and by the coalescence model, where light nuclei are formed due to final state interactions after the fireball decays. A method is proposed to falsify one of the models. We suggest to measure a hadron-deuteron correlation function which carries information about the source of the deuterons and allows one to determine whether a deuteron is directly emitted from the fireball or if it is formed afterwards. The $K^-\!-\!D$ and $p\!-\!D$ correlation functions are computed to illustrate the statement.
description: 16 pages, 2 figures
title: Leucanthemum atratum ssp. halleri
title: Hallers Wucherblume (Leucanthemum atratum ssp. halleri)
titleType: AlternativeTitle
Creators: name: Schulz, Herbert
Publisher: name: Universitätsbibliothek Braunschweig
Year: 2006
Subjects: subject: Diasammlung Herbert Schulz
subject: 580

description: Enthält 4 Bilder der Hallerschen Wucherblume.
SN 1986J VLBI. The Evolution and Deceleration of the Complex Source and a Search for a Pulsar Nebula
Creators: name: Bietenholz, M. F.
name: Bartel, N.
name: Rupen, M. P.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report on VLBI observations of supernova 1986J in the spiral galaxy NGC 891 at two new epochs, 1990 July and 1999 February, t=7.4 and 15.9 yr after the explosion, and on a comprehensive analysis of these and earlier observations from t~4 yr after the explosion date, which we estimate to be 1983.2 +/- 1.1. The source is a shell or composite, and continues to show a complex morphology with large brightness modulations along the ridge and with protrusions. The supernova is moderately to strongly decelerated. The average outer radius expands as t^(0.71 +/- 0.11), and the expansion velocity has slowed to 6000 km/s at t=15.9 yr from an extrapolated 20,000 km/s at t=0.25 yr. The structure changes significantly with time, showing that the evolution is not self-similar. The shell structure is best visible at the latest epoch, when the protrusions have diminished somewhat in prominence and a new, compact component has appeared. The radio spectrum shows a clear inversion above 10 GHz. This might be related to a pulsar nebula becoming visible through the debris of the explosion. The radio flux density between 1.5 and 23 GHz decreases strongly with time, with the flux density proportional to t^(-2.94 +/- 0.24) between t~15 to 19 yr. This decrease is much more rapid than that found in earlier measurements up to t~6 yr.
description: 24 pages, 9 Figures, LaTeX Accepted for Publication in the Astrophysical Journal
Adaptive wavefront correction of dynamic multimode beam based on modal decomposition
Creators: name: Xie, Kun
name: Liu, Wenguang
name: Zhou, Qiong
name: Huang, Liangjin
name: Jiang, Zongfu
name: Xi, Fengjie
name: Xu, Xiaojun
Publisher: name: arXiv
Year: 2019
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We propose and demonstrate a method for the adaptive wavefront correction of dynamic multimode fiber beams for the first time. The wavefront of incident beam is reconstructed in real-time based on the complete modal information, which obtained by using the modal decomposition of correlation filter method. For the proof of principle, both of the modal decomposition and the wavefront correction are implemented using the same computer-generated hologram, which encoded into a phase-only spatial light modulator. We demonstrate the wavefront correction of dynamic multimode beam at a rate of 5Hz and achieve a 1.73-fold improvement on the average power-in-the-bucket. The experimental results indicate the feasibility of the real-time wavefront correction for the large mode area fiber laser by adaptive optics.
description: 11 pages,7 figures
Some homogenization and corrector results for nonlinear monotone operators
Creators: name: Wall, Peter
Publisher: name: arXiv
Year: 1998
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: This paper deals with the limit behaviour of the solutions of quasi-linear equations of the form \ $\ds -\limfunc{div}\left(a\left(x, x/{\varepsilon _h},Du_h\right)\right)=f_h$ on $Ω$ with Dirichlet boundary conditions. The sequence $(\varepsilon _h)$ tends to $0$ and the map $a(x,y,ξ)$ is periodic in $y$, monotone in $ξ$ and satisfies suitable continuity conditions. It is proved that $u_h\rightarrow u$ weakly in $H_0^{1,2}(Ω)$, where $u$ is the solution of a homogenized problem \ $-\limfunc{div}(b(x,Du))=f$ on $Ω$. We also prove some corrector results, i.e. we find $(P_h)$ such that $Du_h-P_h(Du)\rightarrow 0$ in $L^2(Ω,R^n)$.
The Universal Scaling Exponents of Anisotropy in Turbulence and their Measurement
Creators: name: L'vov, Victor
name: Procaccia, Itamar
Publisher: name: arXiv
Year: 1996
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: The scaling properties of correlation functions of non-scalar fields (constructed from velocity derivatives) in isotropic hydrodynamic turbulence are characterized by a set of universal exponents. It is explained that these exponents also characterize the rate of decay of the effects of anisotropic forcing in developed turbulence. This set has never been measured in either numerical or laboratory experiments. These exponents are important for the general theory of turbulence, but also for modeling anisotropic flows. We propose in this letter how to measure these exponents using existing data bases of direct numerical simulations and by designing new laboratory experiments.
description: 10 pages, latex, no figures, online (html) version available at http://lvov.weizmann.ac.il/EXP/EXP.html
title: Leucanthemum halleri
title: Hallers Margerite (Leucanthemum halleri)
titleType: AlternativeTitle
Creators: name: Schulz, Herbert
Publisher: name: Universitätsbibliothek Braunschweig
Year: 2006
Subjects: subject: Schwarzrand-Margerite
subject: Diasammlung Herbert Schulz
subject: 580

description: Enthält 7 Bilder der Hallerschen Margerite.
Signatures of primordial gravitational waves in matter power spectrum
Creators: name: Wang, Ke
Publisher: name: arXiv
Year: 2019
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We simulate the evolution of a dust universe from $z=1089$ to $z=0$ by numerically integrating the Einstein's equation for a spatially flat Friedmann-Lemaire-Robertson-Walker (FLRW) background spacetime with scalar perturbations which are derived from the matter power spectrum produced with the Code for Anisotropies in the Microwave Background (CAMB). To investigate the effects of primordial gravitational waves (GWs) on the inhomogeneity of the universe, we add an additional decaying, divergenceless and traceless primordial tensor perturbation with its initial amplitude being $3\times 10^{-4}$ to the above metric. We find that this primordial tensor perturbation suppresses the matter power spectrum by about $0.01\%$ at $z=0$ for modes with wave number similar to its. This suppression may be a possible probe of a GWs background in the future.
description: 8 pages, 5 figures