cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Classical Inhomogeneities in String Cosmology
Creators: name: Buonanno, A.
name: Meissner, K. A.
name: Ungarelli, C.
name: Veneziano, G.
Publisher: name: arXiv
Year: 1997
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We generalize previous work on inhomogeneous pre-big bang cosmology by including the effect of non-trivial moduli and antisymmetric-tensor/axion fields. The general quasi-homogeneous asymptotic solution---as one approaches the big bang singularity from perturbative initial data---is given and its range of validity is discussed, allowing us to give a general quantitative estimate of the amount of inflation obtained during the perturbative pre-big bang era. The question of determining early-time ``attractors'' for generic pre-big bang cosmologies is also addressed, and a motivated conjecture is advanced. We also discuss S-duality-related features of the solutions, and speculate on the way an asymptotic T-duality symmetry may act on moduli space as one approaches the big bang.
description: 32 pages, Revtex, 1 figure included, epsfig.sty needed; one reference added
Synaptic Elasticity
Creators: Yang, Ju
Publisher: name: Columbia University
Year: 2018
Subjects: subject: Biophysics
subject: Neurosciences
subject: FOS: Clinical medicine
subject: Nanotechnology
subject: FOS: Nanotechnology
subject: Synapses
subject: Neuroplasticity
subject: Elasticity

description: Synapses play a critical role in neural circuits, and their highly specialized structures and biochemical characteristics have been widely studied in learning and memory. Along with their role in signal transmission, synapses also serve as adhesion structures, yet their mechanical characteristics have not received much attention. Given the important role of mechanics in cell adhesion, mechanical studies of synapses could offer insights into synaptic development, maintenance, and function. Here, I investigated synaptic elasticity in cultured rat hippocampal neurons and suggest that mechanical elasticity may be related to synaptic plasticity. I used torsional harmonic atomic force microscopy (TH-AFM) to measure the nanomechanical properties of functional mature excitatory synapses, whose identity and activity was verified by fluorescence microscopy. I combined TH-AFM with transmission electron microscopy and found that high stiffness of synapses originated from postsynaptic spines, not presynaptic boutons. I observed that spines at functional mature excitatory synapses were on average 10 times stiffer than dendritic shafts and that the distribution of spine stiffness exhibited a lognormal-like pattern. Importantly, I found that spine stiffness was correlated with spine size, and it is well established that spine size is correlated with synaptic strength. Based on the stiffness measurements and theoretical modelling of cell adhesion stability, I suggest that stiffness not only helps maintain spine morphology in the presence of synapse adhesion, but also helps stabilize synaptic adhesion. I propose a mechanical synaptic plasticity model. According to this model, mechanical strength leads to functional strength, which could provide a potential causal link between structural plasticity and functional plasticity of synapses.
Track length measurement of $^{19}$F$^+$ ions with the MIMAC Dark Matter directional detector prototype
Creators: name: Tao, Y.
name: Beaufort, C.
name: Moric, I.
name: Tao, C.
name: Santos, D.
name: Sauzet, N.
name: Couturier, C.
name: Guillaudin, O.
name: Muraz, J. F.
name: Naraghi, F.
name: Zhou, N.
name: Busto, J.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Weakly Interacting Massive Particles (WIMPs) are one of the most preferred candidate for Dark Matter. WIMPs should interact with the nuclei of detectors. If a robust signal is eventually observed in direct detection experiments, the best signature to confirm its Galactic origin would be the nuclear recoil track direction. The MIMAC collaboration has developed a low pressure gas detector providing both the kinetic energy and three-dimensional track reconstruction of nuclear recoils. In this paper we report the first ever observations of $^{19}$F nuclei tracks in a $5$ cm drift prototype MIMAC detector, in the low kinetic energy range ($6$-$26$ keV), using specially developed ion beam facilities. We have measured the recoil track lengths and found significant differences between our measurements and standard simulations. In order to understand these differences, we have performed a series of complementary experiments and simulations to study the impact of the diffusion and eventual systematics. We show an unexpected dependence of the number of read-out corresponding to the track on the electric field applied to the $512\ \mathrm{μm}$ gap of the Micromegas detector. We have introduced, based on the flash-ADC observable, corrections in order to reconstruct the physical 3D track length of the primary electron clouds proposing the physics behind these corrections. We show that diffusion and space charge effects need to be taken into account to explain the differences between measurements and standard simulations. These measurements and simulations may shed a new light on the high-gain TPC ionization signals in general and particularly at low energy.
description: 17 pages, 10 figures
Application of Monte Carlo Simulation to the Probability Assessment in FMEA
Creators: name: Villalta, Geinfranco
name: Borja, Raquel
Publisher: name: The University of British Columbia
Year: 2023

description: The mining industry requires risk assessment of major facilities such as tailings dams (TD) at each stage of project development. Various methodologies have been used depending on the needs, with one of the most popular applications being the failure mode and effects analysis (FMEA). The FMEA assesses the likelihood of occurrence (L) and the consequence (C) of each identified failure mode to determine the risk level (R) associated with each failure mode (FM). Subsequently, the critical FMs are selected based on specific criteria for risk classification in order to guide risk reduction efforts. The criteria evaluation form is the qualitative rating standard (e.g., low, medium, high). Two primary issues emerge. First, judgment errors may arise during the workshop-based assessment of Ls and Cs due to potential overconfidence exhibited by the experts. Second, the averaging of the scores performed by each expert to derive a final value is a deterministic analysis that overlooks the variability in expert judgments. The variability includes individual biases, such as risk aversion or risk-taking tendencies, as well as uncertainty among the scores provided by the team. It does not consider a weighted average of individual assessments. It is important to emphasize that some relevant information may be lost by considering only the averages of expert analysis. Given the limitations of deterministic analysis, several researchers have proposed tools to calibrate the behaviour of individual experts within a team. Calibration tests are utilized to measure and address overconfidence exhibited during the estimation of L or C factors. This can be fitted to obtain a stochastic representation of each of them, and then the Monte Carlo simulation can be applied to gain more information about the uncertainty in the outcomes (R). The decision maker then has a range of plausible outcomes and the probabilities of occurrence of them.
Dependence on the spin structure of the eta and rokhlin invariants
Creators: name: Dahl, Mattias
Publisher: name: arXiv
Year: 1999
Subjects: subject: Differential Geometry (math.DG)
subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 58G10, 58G25

description: We study the dependence of the eta invariant $η_D$ on the spin structure, where $D$ is a twisted Dirac operator on a (4k+3)-dimensional spin manifold. The difference between the eta invariants for two spin structures related by a cohomolgy class which is the reduction of a $H^1(M,\Za)$-class is shown to be a half integer. As an application of the technique of proof the generalized Rokhlin invariant is shown to be equal modulo 8 for two spin structures related in this way.
description: 10 pages
Around the nonlinear Ryll-Nardzewski theorem
Creators: name: Wiśnicki, Andrzej
Publisher: name: arXiv
Year: 2019
Subjects: subject: Dynamical Systems (math.DS)
subject: Functional Analysis (math.FA)
subject: Group Theory (math.GR)
subject: FOS: Mathematics

description: Suppose that $Q$ is a weak$^{\ast }$ compact convex subset of a dual Banach space with the Radon-Nikodým property. We show that if $(S,Q)$ is a nonexpansive and norm-distal dynamical system, then there is a fixed point of $S$ in $Q$ and the set of fixed points is a nonexpansive retract of $Q.$ As a consequence we obtain a nonlinear extension of the Bader-Gelander-Monod theorem concerning isometries in $L$-embedded Banach spaces. A similar statement is proved for weakly compact convex subsets of a locally convex space, thus giving the nonlinear counterpart of the Ryll-Nardzewski theorem.
description: 15 pages, to appear, Mathematische Annalen, Referee suggestions incorporated and some new references added, text has a few ideas in common with arXiv:1909.09723. Relations between the two papers await further exploration
Primordial torsion fields as an explanation of the anisotropy in cosmological electromagnetic propagation
Creators: name: Dobado, Antonio
name: Maroto, Antonio L.
Publisher: name: arXiv
Year: 1997
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this note we provide a simple explanation of the recent finding of anisotropy in electromagnetic (EM) propagation claimed by Nodland and Ralston (astro-ph/9704196). We consider, as a possible origin of such effect, the effective coupling between EM fields and some tiny background torsion field. The coupling is obtained after integrating out charged fermions, it is gauge invariant and does not require the introduction of any new physics.
description: 8 pages, LaTeX, one figure, enlarged version with minor corrections
Generalized Boltzmann equations for on-shell particle production in a hot plasma
Creators: name: Jakovac, A.
Publisher: name: arXiv
Year: 2002
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: A novel refinement of the conventional treatment of Kadanoff--Baym equations is suggested. Besides the Boltzmann equation another differential equation is used for calculating the evolution of the non-equilibrium two-point function. Although it was usually interpreted as a constraint on the solution of the Boltzmann equation, we argue that its dynamics is relevant to the determination and resummation of the particle production cut contributions. The differential equation for this new contribution is illustrated in the example of the cubic scalar model. The analogue of the relaxation time approximation is suggested. It results in the shift of the threshold location and in smearing out of the non-analytic threshold behaviour of the spectral function. Possible consequences for the dilepton production are discussed.
description: 22 pages, latex, 2 ps figures
Rotheca myricoides Steane & Mabb.
Creators: name: Zhou, Ya-Dong
name: Mwachala, Geoffrey
name: Hu, Guang-Wan
name: Wang, Qing-Feng
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Lamiales
Lamiaceae
Rotheca
Rotheca myricoides

description: Rotheca myricoides (Hochst.) Steane & Mabb.  —
Habit: Herb.
Habitat: LMWF, LMDF; up to 2 200 m. Distribution: II.
 Voucher: Ca. 3 miles Southeast of Nanyuki, Alt. 2073 m, 18 Jun. 1943, Moreau & Moreau 24 (EA).
Reference: Agnew (2013).
description: Published as part of Zhou, Ya-Dong, Mwachala, Geoffrey, Hu, Guang-Wan & Wang, Qing-Feng, 2022, Annotated checklist of the vascular plants of Mount Kenya, East Africa, pp. 1-108 in Phytotaxa 546 (1) on page 87, DOI: 10.11646/phytotaxa.546.1.1, http://zenodo.org/record/6550464
Harmonic analysis on the SU(2) dynamical quantum group
Creators: name: Koelink, Erik
name: Rosengren, Hjalmar
Publisher: name: arXiv
Year: 2000
Subjects: subject: Quantum Algebra (math.QA)
subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: 20G42, 33D45, 33D80

description: Dynamical quantum groups were recently introduced by Etingof and Varchenko as an algebraic framework for studying the dynamical Yang-Baxter equation, which is precisely the Yang-Baxter equation satisfied by 6j-symbols. We investigate one of the simplest examples, generalizing the standard SU(2) quantum group. The matrix elements for its corepresentations are identified with Askey-Wilson polynomials, and the Haar measure with the Askey-Wilson measure. The discrete orthogonality of the matrix elements yield the orthogonality of q-Racah polynomials (or quantum 6j-symbols). The Clebsch-Gordan coefficients for representations and corepresentations are also identified with q-Racah polynomials. This results in new algebraic proofs of the Biedenharn-Elliott identity satisfied by quantum 6j-symbols.
description: 51 pages; minor corrections
Demarcating Geographic Regions using Community Detection in Commuting Networks with Significant Self-Loops
Creators: name: He, Mark
name: Glasser, Joseph
name: Pritchard, Nathaniel
name: Bhamidi, Shankar
name: Kaza, Nikhil
Publisher: name: arXiv
Year: 2019
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Social and Information Networks (cs.SI)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: We develop a method to identify statistically significant communities in a weighted network with a high proportion of self-looping weights. We use this method to find overlapping agglomerations of U.S. counties by representing inter-county commuting as a weighted network. We identify three types of communities; non-nodal, nodal and monads, which correspond to different types of regions. The results suggest that traditional regional delineations that rely on ad hoc thresholds do not account for important and pervasive connections that extend far beyond expected metropolitan boundaries or megaregions.
description: 38 pages
Synergy of Orchestration, Rhythm, and Form in Three Microtonal Compositions
Creators: Brook, Taylor McNeal
Publisher: name: Columbia University
Year: 2018
Subjects: Instrumentation and orchestration
Microtonal music
Composition (Music)

description: Microtonal pitch systems have musical implications beyond the organization of pitch, suggesting the possibility of functioning symbiotically with orchestration, rhythm, and form in a musical work. This essay focuses on three compositions, each of which approaches tuning and microtonality in a unique way: The Delusion of the Fury (1969) by Harry Partch, Limited Approximations (2010) by Georg Friedrich Haas, and Asking Ocean (2016) by Marc Sabat. After a general analysis of the pitch materials in these three works, passages of music are examined and compared to illustrate how pitch systems, especially those in extended just intonation, inform orchestration, rhythm, and form, exploring how these composers balance the practical considerations of writing microtonal music with artistic intent. This essay argues that the success of these three works relates to a sensitivity toward the limitations and possibilities of their novel approaches to microtonal pitch organization.
title: Aves Braunschweig - 4. Jahrgang (2013)
Creators: name: :None
Publisher: name: Universitätsbibliothek Braunschweig
Year: 2013
Subjects: subject: Brunsvicensien der Universitätsbibliothek Braunschweig
subject: Biologie
subject: 598

description: Aves Braunschweig: Mitteilungen der Avifaunistischen Arbeitsgemeinschaft Südostniedersachsen, AviSON im NABU-Landesverband Niedersachsen, vol. 4. 2013
Salvia merjamie Forssk.
Creators: name: Zhou, Ya-Dong
name: Mwachala, Geoffrey
name: Hu, Guang-Wan
name: Wang, Qing-Feng
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Lamiales
Lamiaceae
Salvia
Salvia merjamie

description: Salvia merjamie Forssk.  —
Habit: Herb.
Habitat: LMDF, BZ, UMF, HZ, AZ; 2 200–4 100 m. Distribution: I.
 Voucher: Timau Track, Alt. 3 324 m, 21 Jan. 2015, SAJIT 002754 (HIB).
 References: Bussmann (1993, 1994), Bussmann & Beck (1995a, 1998), Lange et al. (1997), Paton et al. (2009), Agnew (2013).
description: Published as part of Zhou, Ya-Dong, Mwachala, Geoffrey, Hu, Guang-Wan & Wang, Qing-Feng, 2022, Annotated checklist of the vascular plants of Mount Kenya, East Africa, pp. 1-108 in Phytotaxa 546 (1) on page 87, DOI: 10.11646/phytotaxa.546.1.1, http://zenodo.org/record/6550464
title: Совершенствование оценки профессионализма государственных служащих в сфере молодежной политики в субъекте Российской Федерации
title: Монография
titleType: Subtitle
Creators: name: Гребенникова А.А.
name:  Костырева И.С.
Publisher: name: Вузовское образование
Year: 2020

description: Монография посвящена вопросам оценки профессионализма государственных служащих в сфере молодежной политики в субъекте Российской Федерации. В ней представлены теоретические и правовые основы оценки профессионализма государственных служащих, дана оценка профессионализма государственных служащих Министерства молодежной политики и спорта Саратовской области, сформулированы предложения по совершенствованию методов оценки профессионализма и рекомендации по повышению профессионального уровня государственных служащих в сфере молодежной политики. Для государственных и муниципальных служащих, студентов, магистрантов, аспирантов и преподавателей, а также всех, кто интересуется вопросами развития государственной службы в России.
Pushing Purcell-enhancement beyond its limits
Creators: name: Barrett, Thomas D.
name: Doherty, Thomas H.
name: Kuhn, Axel
Publisher: name: arXiv
Year: 2019
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Purcell-enhanced emission from a coupled emitter-cavity system is a fundamental manifestation of cavity quantum electrodynamics. Starting from a theoretical description we derive a scheme for photon emission from an emitter coupled to a birefringent cavity that exceeds hitherto anticipated limitations. Based on a recent study and experimental investigation of the intra-cavity coupling of orthogonal polarisation modes in birefringent cavities, we now decouple the emitter and the photon prior to emission from the cavity mode. Effectively, this is "hiding" the emitter from the photon in the cavity to suppress re-excitation, increasing the overall emission through the cavity mirrors. In doing so we show that tailored cavity birefringence can offer significant advantages and that these are practically achievable within the bounds of present-day technology. It is found that birefringence can mitigate the tradeoff between stronger emitter-cavity coupling and efficient photon extraction. This allows for longer cavities to be constructed without a loss of performance -- a significant result for applications where dielectric mirrors interfere with any trapping fields confining the emitter. We then generalise our model to consider a variety of equivalent schemes. For instance, detuning a pair of ground states in a three-level emitter coupled to a cavity in a Lambda-system is shown to provide the same enhancement, and it can be combined with a birefringent cavity to further increase performance. Additionally, it is found that when directly connecting multiple ground states of the emitter to form a chain of coupled states, the extraction efficiency approaches its fundamental upper limit. The principles proposed in this work can be applied in multiple ways to any emitter-cavity system, paving the way to surpassing the traditional limits of such systems with technologies that exist today.
description: 8 pages, 8 figures plus 3 page appendix
Mine Waste Storage Facility Liner Design and Testing : A Case Study from the Cerro Corona Mine
Creators: name: Borja, Raquel
name: Dueñas, Jorge
name: Ordonez, Richard
name: Rogers, Josh
Publisher: name: The University of British Columbia
Year: 2023

description: This paper presents a case study of Waste Storage Facilities (WSFs), which include a composite liner system placed in a shingle configuration to manage seepage and mitigate stability impacts. The composite liner system consists of a textured high-density polyethylene (HDPE) geomembrane with an underlying clay layer and overlying sand layer. Engineering literature includes limited information on geomembrane interface shear strengths under high normal loads. To support the WSFs designs, a liner interface shear strength testing program was performed using the direct shear apparatus. The program included testing to verify the interface shear strength parameters selected for design, evaluating interface shear strengths at high normal loads (up to 3,200 kPa), and evaluating the impacts of the various testing conditions on interface shear strength. This paper presents the results of the laboratory testing, a discussion on the impacts of loading conditions on interface shear strength, and a discussion on various regression techniques used to verify residual shear strengths.
Coupled Oscillators with Chemotaxis
Creators: name: Sawai, Satoshi
name: Aizawa, Yoji
Publisher: name: arXiv
Year: 1998
Subjects: subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: Quantitative Biology (q-bio)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: A simple coupled oscillator system with chemotaxis is introduced to study morphogenesis of cellular slime molds. The model successfuly explains the migration of pseudoplasmodium which has been experimentally predicted to be lead by cells with higher intrinsic frequencies. Results obtained predict that its velocity attains its maximum value in the interface region between total locking and partial locking and also suggest possible roles played by partial synchrony during multicellular development.
description: 4 pages, 5 figures, latex using jpsj.sty and epsf.sty, to appear in J. Phys. Soc. Jpn. 67 (1998)
title: Tacitus und Rubens: Zwei Bilder von Senecas Tod
Creators: name: Maurach, Gregor
Publisher: name: Goltze
Year: 1989
Subjects: subject: Brunsvicensien der Universitätsbibliothek Braunschweig
subject: Jahrbuch der BWG
subject: 10

description: Kaum ein anderes Kapitel des Tacitus hat eine so mächtige Nachwirkung ausgeübt wie das über Senecas Tod: es war einer der Haupttexte für den Neostoizismus, an ihm schieden sich die Wertungen dieses Mannes, und deren gab es zahlreiche. Das Kapitel ist daher oft kommentiert, aber noch immer nicht in allen Details interpretiert worden; hier sind noch einige Dinge nachzutragen. Dieses Kapitel hat auch ein bedeutendes Kunstwerk angeregt und mitbestimmt, Peter Paul Rubens' "Der sterbende Seneca". Und auch dieses Werk, oft besprochen und ins Gesamtwerk von Rubens eingeordnet, aber nicht selten auch fehlgedeutet, harrt noch der Interpretation; einiges soll auch hierzu beigetragen werden.
Matrix resolvent and the discrete KdV hierarchy
Creators: name: Dubrovin, Boris
name: Yang, Di
Publisher: name: arXiv
Year: 2019
Subjects: subject: Mathematical Physics (math-ph)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: Based on the matrix-resolvent approach, for an arbitrary solution to the discrete KdV hierarchy, we define the tau-function of the solution, and compare it with another tau-function of the solution defined via reduction of the Toda lattice hierarchy. Explicit formulae for generating series of logarithmic derivatives of the tau-functions are then obtained, and applications to enumeration of ribbon graphs with even valencies and to the special cubic Hodge integrals are considered.
description: It was added a remark after Theorem 1; added Appendix A; added references; two statements moved to Introduction; corrected typos. 26 pages
Central charges of aperiodic holographic tensor-network models
Creators: name: Jahn, Alexander
name: Zimboras, Zoltan
name: Eisert, Jens
Publisher: name: Freie Universität Berlin
Year: 2020
Subjects: subject: Gauge-gravity dualities
subject: Quantum error correction
subject: Disordered systems
subject: Tensor network methods
subject: Tensor network renormalization
subject: 500 Naturwissenschaften und Mathematik::530 Physik::539 Moderne Physik

description: Central to the AdS/CFT correspondence is a precise relationship between the curvature of an anti–de Sitter (AdS) space-time and the central charge of the dual conformal field theory (CFT) on its boundary. Our work shows that such a relationship can also be established for tensor network models of AdS/CFT based on regular bulk geometries, leading to an analytical form of the maximal central charges exhibited by the boundary states. We identify a class of tensors based on Majorana dimer states that saturate these bounds in the large curvature limit, while also realizing perfect and block-perfect holographic quantum error correcting codes. Furthermore, the renormalization group description of the resulting model is shown to be analogous to the strong disorder renormalization group, thus giving an example of an exact quantum error correcting code that gives rise to a well-understood critical system. These systems exhibit a large range of fractional central charges, tunable by the choice of bulk tiling. Our approach thus provides a precise physical interpretation of tensor network models on regular hyperbolic geometries and establishes quantitative connections to a wide range of existing models.
Renormalization of nonequilibrium dynamics in FRW cosmology
Creators: name: Baacke, Jurgen
name: Heitmann, Katrin
name: Patzold, Carsten
Publisher: name: arXiv
Year: 1997
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We derive the renormalized nonequilibrium equations of motion for a scalar field and its quantum back reaction in a conformally flat Friedmann-Robertson-Walker universe. We use a fully covariant formalism proposed by us recently for handling numerically and analytically nonequilibrium dynamics in one-loop approximation. The system is assumed to be in a conformal vacuum state initially. We use dimensional regularization; we find that the counter terms can be chosen independent of the initial conditions though the divergent leading order graphs do depend on them.
description: 14 pages, RevTeX, some obvious typos corrected
Salvia nilotica Jacq.
Creators: name: Zhou, Ya-Dong
name: Mwachala, Geoffrey
name: Hu, Guang-Wan
name: Wang, Qing-Feng
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Lamiales
Lamiaceae
Salvia
Salvia nilotica

description: Salvia nilotica Juss. ex Jacq.  —
Habit: Herb.
Habitat: LMWF, LMDF, BZ, UMF, HZ; 1 300–3 700 m. Distribution: II.
 Voucher: Chogoria Track, near Waterfall, Alt. 3 184 m, 25 Jan. 2015, SAJIT 002831 (HIB).
 References: Fries & Fries (1930b), Bussmann (1993, 1994), Bussmann & Beck (1995a, 1998), Paton et al. (2009), Agnew (2013).
description: Published as part of Zhou, Ya-Dong, Mwachala, Geoffrey, Hu, Guang-Wan & Wang, Qing-Feng, 2022, Annotated checklist of the vascular plants of Mount Kenya, East Africa, pp. 1-108 in Phytotaxa 546 (1) on page 87, DOI: 10.11646/phytotaxa.546.1.1, http://zenodo.org/record/6550464
Dynamics of Internal Models in Game Players
Creators: name: Taiji, Makoto
name: Ikegami, Takashi
Publisher: name: arXiv
Year: 1998
Subjects: subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: FOS: Physical sciences

description: A new approach for the study of social games and communications is proposed. Games are simulated between cognitive players who build the opponent's internal model and decide their next strategy from predictions based on the model. In this paper, internal models are constructed by the recurrent neural network (RNN), and the iterated prisoner's dilemma game is performed. The RNN allows us to express the internal model in a geometrical shape. The complicated transients of actions are observed before the stable mutually defecting equilibrium is reached. During the transients, the model shape also becomes complicated and often experiences chaotic changes. These new chaotic dynamics of internal models reflect the dynamical and high-dimensional rugged landscape of the internal model space.
description: 19 pages, 6 figures
Time evolution of many-body localized systems in two spatial dimensions
Creators: name: Kshetrimayum, Augustine
name: Goihl, Marcel
name: Eisert, Jens
Publisher: name: Freie Universität Berlin
Year: 2020
Subjects: subject: Entanglement entropy
subject: Many-body localization
subject: Tensor network methods
subject: 500 Naturwissenschaften und Mathematik::530 Physik::539 Moderne Physik

description: Many-body localization is a striking mechanism that prevents interacting quantum systems from thermalizing. The absence of thermalization behavior manifests itself, for example, in a remanence of local particle number configurations, a quantity that is robust over a parameter range. Local particle numbers are directly accessible in programmable quantum simulators, in systems of cold atoms, even in two spatial dimensions. Yet, the classical simulation aimed at building trust in quantum simulations is highly challenging. In this work, we present a comprehensive tensor network simulation of a many-body localized systems in two spatial dimensions using a variant of an infinite projected entangled pair states algorithm. The required translational invariance can be restored by implementing the disorder into an auxiliary spin system, providing an exact disorder average under dynamics. We can quantitatively assess signatures of many-body localization for the infinite system: Our methods are powerful enough to provide crude dynamical estimates for the transition between localized and ergodic phases. Interestingly, in this setting of finitely many disorder values, which we also compare with simulations involving noninteracting fermions and for which we discuss the emergent physics, localization emerges in the interacting regime, for which we provide an intuitive argument, while Anderson localization is absent.
Stachys aculeolata Hook. f.
Creators: name: Zhou, Ya-Dong
name: Mwachala, Geoffrey
name: Hu, Guang-Wan
name: Wang, Qing-Feng
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Lamiales
Lamiaceae
Stachys
Stachys aculeolata

description: Stachys aculeolata Hook.f.  —
Habit: Herb.
Habitat: LMWF, BZ, UMF, HZ; 1 300–3 800 m. Distribution: II.
 Voucher: Near Meru Mount Kenya Lodge, Alt. 2 962 m, 27 Jan. 2015, SAJIT 002881 (HIB).
 References: Blundell (1987), Bussmann (1993, 1994), Bussmann & Beck (1995a), Paton et al. (2009), Agnew (2013).
description: Published as part of Zhou, Ya-Dong, Mwachala, Geoffrey, Hu, Guang-Wan & Wang, Qing-Feng, 2022, Annotated checklist of the vascular plants of Mount Kenya, East Africa, pp. 1-108 in Phytotaxa 546 (1) on page 87, DOI: 10.11646/phytotaxa.546.1.1, http://zenodo.org/record/6550464
Time to Professionalise Data Stewardship
Creators: name: Cruz, Maria
name: Imming, Melanie
name: Shanahan, Hugh
name: Teperek, Marta
name: van Gelder, Celia
name: Whyte, Angus
Publisher: name: Zenodo
Year: 2019
Subjects: data stewardship
FAIR data
open science

description: Materials presented at the workshop "Time to Professionalise Data Stewardship", held during the Open Science Fair in Porto on 17 September 2019. This workshop consisted of a mix of case study presentations and group discussions focussing on the need for professionalising data stewardship roles and how to go from theory and policy to practice and implementation. The “Turning FAIR into Reality” Report of the European Commission FAIR Data Expert Group gives high priority to “the increased provision and professionalisation of data stewardship”. In particular, it states: “New job profiles need to be defined and education programmes put in place to train the large cohort of data scientists and data stewards required to support the transition to FAIR.” A number of current initiatives seek to define these job profiles and address the supply of relevant skills. One example is the FAIR4S Skills Framework defined under the EOSCpilot WP7 on Skills and Capability. Another example is the EOSC FAIRsFAIR project that supports data stewardship training. The workshop aimed to raise awareness of such initiatives among those facing the practical commitments and real experience of building data stewardship roles. As a starting point for discussion, case studies from relevant initiatives explain how they support those intending to hire and train data stewards. In breakout groups, the participants debated what are the current problems and obstacles facing those who are implementing data stewardship (e.g. training and career development), and how current skill and training frameworks and job profiles can help.
The dimension of solution sets to systems of equations in algebraic groups
Creators: name: Klyachko, Anton A.
name: Ryabtseva, Maria A.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Group Theory (math.GR)
subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics

description: The Gordon--Rodriguez-Villegas theorem says that, in a finite group, the number of solutions to a system of coefficient-free equations is divisible by the order of the group if the rank of the matrix composed of the exponent sums of $j$-th unknown in $i$-th equation is less than the number unknowns. We obtain analogues of this and similar facts for algebraic groups. In particular, our results imply that the dimension of each irreducible component of the variety of homomorphisms from a finitely generated group with infinite abelianisation into an algebraic group $G$ is at least $\dim G$.
description: 6 pages. A Russian version of this paper is at http://halgebra.math.msu.su/staff/klyachko/papers.htm . V.2: An open question added, misprints corrected. V.3: misprints corrected
title: Полномочия органов местного самоуправления в земельной сфере
title: Учебное пособие
titleType: Subtitle
Creators: name: Гребенникова А.А.
name:  Колоколов А.В.
Publisher: name: Вузовское образование
Year: 2020

description: Учебное пособие представляет собой теоретические сведения, сборник тестов и задач по дисциплинам «Местное самоуправление» и «Земельное право». Издание рекомендуется для самостоятельной подготовки и работы на семинарских занятиях с целью проверки и закрепления полученных знаний. Подготовлено с учетом требований Федерального государственного образовательного стандарта высшего образования. Для бакалавров, магистрантов, аспирантов высших учебных заведений, обучающихся по направлению подготовки «Государственное и муниципальное управление», а также для преподавателей.
Flavor changing t -> c l_1^- l_2^+ decay in the general two Higgs doublet model
Creators: name: Iltan, E. O.
name: Turan, I.
Publisher: name: arXiv
Year: 2002
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the flavor changing t-> c l_1^- l_2^+ decay in the framework of the general two Higgs doublet model, the so called model III. We predict the branching ratio for l_1=τ, l_2=μat the order of magnitude of BR \sim 10^{-8}.
description: 12 Pages, 5 Figures
Feasible Region: an Actuation-Aware Extension of the Support Region
Creators: name: Orsolino, Romeo
name: Focchi, Michele
name: Caron, Stéphane
name: Raiola, Gennaro
name: Barasuol, Victor
name: Semini, Claudio
Publisher: name: arXiv
Year: 2019
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: In legged locomotion the projection of the robot Center of Mass (CoM) being inside the convex hull of the contact points is a commonly accepted sufficient condition to achieve static balancing. However, some of these configurations cannot be realized because the joint torques required to sustain them would be above their limits (actuation limits). In this manuscript we rule out such configurations and define the Feasible Region, a revisited support region that guarantees both global static stability in the sense of tipover and slippage avoidance and of existence of a set of joint-torques that are able to sustain the robot body weight. We show that the feasible region can be employed for the selection of feasible footholds and CoM trajectories to achieve static locomotion on rough terrains, also in presence of load intensive tasks. Key results of our approach include the efficiency in the computation of the feasible region thanks to an Iterative Projection algorithm. This allowed us to carry out successful experiments on the HyQ robot, that was able to negotiate obstacles of moderate dimensions while carrying an extra 10 kg payload.
description: 17 pages, 12 figures
Stachys alpigena T. C. E. Fr.
Creators: name: Zhou, Ya-Dong
name: Mwachala, Geoffrey
name: Hu, Guang-Wan
name: Wang, Qing-Feng
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Lamiales
Lamiaceae
Stachys
Stachys alpigena

description: Stachys alpigena T.C.E.Fr.  —
Habit: Herb.
Habitat: LMWF, LMDF, BZ, UMF, HZ; 2 500–3 800 m. Distribution: II.
 Voucher: Chogoria Track, Alt. 2 572 m, 22 Jul. 2014, SAJIT 002035 (HIB).
 References: Paton et al. (2009), Agnew (2013).
description: Published as part of Zhou, Ya-Dong, Mwachala, Geoffrey, Hu, Guang-Wan & Wang, Qing-Feng, 2022, Annotated checklist of the vascular plants of Mount Kenya, East Africa, pp. 1-108 in Phytotaxa 546 (1) on page 87, DOI: 10.11646/phytotaxa.546.1.1, http://zenodo.org/record/6550464
Synthesis and Reactivity of Highly Stabilized Cyclopentadienes
Creators: Radtke, Mark Alexander
Publisher: name: Columbia University
Year: 2018
Subjects: Cyclopentadiene
Chemistry
Organic compounds--Synthesis
Organic compounds--Reactivity

description: This dissertation focuses on the development of cyclopentadienes as an emerging class of compounds for use in catalysis. Previous work in the Lambert group had established pentacarboxycyclopentadienes (PCCPs) as a promising class of Brønsted acids capable of being used as catalysts in acid-promoted reactions. The ease of their synthesis distinguished them from the comparable BINOL-derived phosphoric acids, and their unique mode of enantioinduction created opportunities for their use in enantioselective reactions.
      	Initial efforts were focused on the synthesis of leading to the development of two complementary methods for their synthesis. Chapter 2 details the improvements made to the transesterification of penta(methoxycarbonyl)cyclopentadiene, which allowed for sterically encumbered alcohols to be used. Further, a new method for accessing the penta-acyl chloride intermediate was developed, leading to the ability for a wide array of electron-deficient PCCPs to be synthesized.
      	The second half of the dissertation examines the use of electrophilic silicon reagents and their use as Lewis acids. Given our ability to access highly electron-deficient cyclopentadienes, the silyl cyclopentadienes were targeted as potential Lewis acids. Chapter 4 details the synthesis of these species, and their characterization. Having established a convenient route to silyl mono(carboxy)tetracyanocyclopentadienides, we examined their use as catalysts in halide abstraction reactions. Benzylic bromides could be activated and subsequently allylated, or arylated with a nucleophilic arene using allyltrimethylsilane as a sacrificial silyl source.
q-convolution and its q-Fourier transform
Creators: name: Rogov, V. -B. K.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics

description: The functions on a lattice generated by the integer degrees of $q^2$ are considered, 0
description: 17 pages, Latex
Synthesis, Editing, and Rendering of Multiscale Textures
Creators: Han, Charles
Publisher: name: Columbia University
Year: 2011
Subjects: Computer science

description: The study of textures---images with repeated visual content---has produced a number of useful tools and algorithms for analysis, synthesis, editing, rendering, and a variety of other applications. However, the recent rapid growth in data storage and computational abilities has expanded the notion of what constitutes a texture. Modern textures can often outstrip traditional assumptions on input size by several orders of magnitude. Additionally, these multiscale textures typically contain features at not just one scale but rather across a wide range of scales, further violating existing assumptions. In order to meaningfully capture the large-scale features present in multiscale textures, we introduce a new example-based input representation, the exemplar graph. This representation enables allows us to efficiently define textures spanning a large--or possibly infinite--range of visual scales. We develop a hierarchical, parallelizable algorithm for performing texture synthesis from an input exemplar graph. In addition to automated generation, an increasingly important application of texture synthesis is in interactive tools for guiding texture design. This modality is especially important for multiscale textures, as they offer special perceptual challenges to artists. We examine algorithmic and engineering optimizations to enable real-time analysis and synthesis of multiscale textures, and explore potential implications for editing tools. Finally, we study the issue of display. To accurately view a large image at distance, some filtering operation must be performed. In many cases, such as traditional color images, the filtering operations are well-known. However, other texture representations, such as normal or displacement maps, present special difficulties for filtering. We treat the former case, presenting a principled analysis and algorithms for filtering and display of large normal maps.
Modelling of Static Liquefaction of Cadia Failure with Material Point Method
Creators: name: Aynaya, Pepe
name: Fernández, Fabricio
name: Velloso, Raquel Quadros
Publisher: name: The University of British Columbia
Year: 2023

description: Currently, the mining industry performs stress-strain analyses based on continuum models to represent the fundamental mechanics of the problem using classical numerical platforms based on the Finite Element Method (FEM) and Finite Difference Method (FDM). However, these numerical methods satisfactorily model only the onset of the failure at limited strains and displacement levels. On the other hand, more advanced numerical methods, such as the Material Point Method (MPM), are suitable to simulate the failure initiation, the runout processes, and the final deposition of the filled mass. Motivated by recent tailings dam failures worldwide and advances in numerical analysis techniques, this paper seeks to assess and understand the runout characteristics of dam failures caused by the static liquefaction process. We aim to study failure initiation, flow behaviour during the runout process, and deposition patterns of the dam failure. In this work, we model the Cadia dam failure using the Material Point Method (MPM) to understand problems characterized by large displacements and deformations. The geotechnical parameters of the materials used in the numerical model were obtained from the Report on NTSF (Northern Tailing Storage Facility) Embankment Failure of the Cadia (Morgenstern et al., 2019). Additionally, we reviewed the results of the limit equilibrium analyses prepared for the NTSF (Morgenstern et al., 2019) to determine the failure mechanics imposed into the MPM model. This study used an elastoplastic constitutive model with exponential softening to represent the behaviour of the materials. The numerical simulations were performed using the MPM-PUCRio software (Fernández, 2021), an in-house developed C++ code, where the motion equations are solved under an explicit integration scheme.
title: Wirkungen von Wellen- und Seegangskräften auf Bauwerke im Flachwasser- und Offshorebereich
Creators: name: :None
Publisher: name: Elektronisch veröffentlicht: 17.10.2013
Year: 1980
Subjects: subject: 62

description: Es werden die Forschungsprojekte "Seegangskräfte auf Offshorekonstruktionen" (gefördert durch das Bundesministerium für Forschung und Technologie (BMFT)) und "Wellenkräfte auf Seebauwerke im Flachwasser" (gefördert durch die Deutsche Forschungsgemeinschaft (DFG)) beschrieben.
Reproducibility of Heart Rate Variability Revealed by Repeated Measurements during and after Hemodialysis
Creators: name: Deussing, Kerstin
name: Wendt, Ralph
name: Burger, Ronald
name: Gollasch, Maik
name: Beige, Joachim
Publisher: name: Charité - Universitätsmedizin Berlin
Year: 2019
Subjects: subject: Dialysis
subject: Heart rate variability
subject: Intradialytic morbid event
subject: Low-frequency to high-frequency
subject: Autonomous nervous system
subject: Sympathetic activation
subject: 600 Technik, Medizin, angewandte Wissenschaften::610 Medizin und Gesundheit::610 Medizin und Gesundheit

description: Background/Aims: Trajectory of heart rate variability (HRV) represents a noninvasive real-time measure of autonomous nervous system (ANS) and carries the capability of providing new insights into the hemodynamic compensation reserve during hemodialysis (HD). However, studies on HRV reproducibility during HD are scarce and did not refer to different reading periods. In this observational study, we aimed to establish the best suited and most reliable and reproducible HRV index in routine HD treatments including different reading rates. Methods: HRV was characterized by standardized mathematical variation expressions of R/R' intervals: SD of all R/R' intervals (ms), square root of the root mean square of the sum of all differences between adjacent R/R' intervals (ms), percentage of consecutive R/R' intervals that differ by >50 ms (%), low-frequency spectral analysis HRV (LF, expressing sympathetic activity), and high-frequency HRV (HF, expressing parasympathetic activity). To compare robustness of these HRV indices during HD procedures, we compared HRV indices means between different HD sessions and controlled for association with clinical parameters. Results: In 72 HD treatments of 34 patients, we detected the highest reproducibility (89%) of HRV measures when analyzing the low-frequency to high-frequency (LF/HF) ratio in long-term (3 h) readings. Long-term LF/HF was able to discriminate -between patients with and without heart failure NYHA classes >= 3 (p = 0.009) and type 2 diabetes (p = 0.023). We were unable to study relationships between ANS and intradialytic complications because they did not appear in our cohort. Short-term readings of HRV indices did not show any significance of pattern change during HD. Conclusion: In summary, our data provide evidence for high robustness of long-term LF/HF in analyzing HRV in HD patients using future automated monitoring systems. For short-term analysis, mathematical real-time analysis must evolve.
Вимірювання поляризаційного і омічного потенціалів для контролю захисту від корозії підземних трубопроводів і споруд
Creators: name: Джала
name: Вербенець
name: Сенюк
name: , Лозован
Publisher: name: Zenodo
Year: 2019
Subjects: Електрична поляризація
Різниця потенціалів
Металеві споруди
Вимірювальний контроль
Аппаратура

description: Джала Р.М., Вербенець Б.Я., Сенюк О.І., Лозован В.П. // Вимірювання поляризаційного і омічного потенціалів для контролю захисту від корозії підземних трубопроводів і споруд // Technical Using of Measurement - 2019 // V Всеукраїнська науково-технічна конференція молодих вчених у царині метрології 29 січня–2 лютого 2019 р. // Славське, Україна. С. 62-63. DOI: http://doi.org/10.5281/zenodo.3433407