cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Wadithamnus artemisioides subsp. batharitica T. Hammer & R. W. Davis 2017, comb. nov.
Creators: name: Hammer, Timothy A.
name: Davis, Robert W.
name: Thiele, Kevin R.
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Caryophyllales
Amaranthaceae
Wadithamnus
Wadithamnus artemisioides
Wadithamnus artemisioides subsp. batharitica (a.g.mill. & j.a.nyberg) t.hammer & r.w.davis

description: Wadithamnus artemisioides subsp. batharitica (A.G.Mill. & J.A.Nyberg) T.Hammer & R.W.Davis, comb. nov.
 Basionym: Aerva artemisioides subsp. batharitica Miller & Nyberg (1994: 35).
 Type:— OMAN. Dhofar: above Wadi Schuwaimayah, 17°56’N 55°32’E, 50 m, 28 April 1984, Miller 6421 (holotype E!, image of the holotype available at http://data.rbge.org.uk/herb/ E00687200); isotypes K, ON, UPS (fide Miller & Nyberg 1994).
 Distribution: — Oman between 17°02 ′ N 55°01 ′ E and 18°05 ′ N 56°29 ′ E, with an outlying record near 23°01 ′ N 59°07 ′ E.
 Habitat: —Dry limestone cliffs and wadi banks at 20 ‒ 300 m a.s.l.
 Specimens examined:— OMAN: Sharbitat, path and wadi below (E of) airstrip, 18°05’ N 56°29’ E, 10 May 1983, Gallagher 6750/3 (E-00687199); Jabal Quinqari near Sudh, 17°02’ N 55°01’ E, 04 November 1983, Lawton 2520 (E-00687258); Dhofar, Wadi Qumtat above Schuwaimayah, 17°56’ N 55°32’ E, 50–60 m, 28 April 1984, A. Miller 6421 (E-00687200); Dhofar, Schwamiya, dry/wet wadi, 26 June 1985, I. McLeish 547 (E-00687201); Dhofar, Edge of escarpment above Schuwaymiyah, 17 September 1989, 300 m, Miller & Nyberg 9408 (E-00161905); 2km south of Bimmah, 23°01’ N 59°07’ E, 02 October 1993, McLeish 2284 (E-00113662); Dhofar, sadh (Sudah), coastal rocks, 17°05’ N 55°05’ E, 0–250 m, 31 October 1993, McLeish 2960 (E-00100967).
description: Published as part of Hammer, Timothy A., Davis, Robert W. & Thiele, Kevin R., 2017, Wadithamnus, a new monotypic genus in Amaranthaceae, pp. 173-184 in Phytotaxa 295 (2) on pages 182-183, DOI: 10.11646/phytotaxa.295.2.5, http://zenodo.org/record/13688863
SO(10) models with flavour symmetries: Classification and examples
Creators: name: Ivanov, I. P.
name: Lavoura, L.
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We establish the full list of flavour symmetry groups which may be enforced, without producing any further accidental symmetry, on the Yukawa-coupling matrices of an SO(10) Grand Unified Theory with arbitrary numbers of scalar multiplets in the 10, $\overline{126}$, and 120 representations of SO(10). For each of the possible discrete non-Abelian symmetry groups, we present examples of minimal models which do not run into obvious contradiction with the phenomenological fermion masses and mixings.
description: 22 pages
Empathy for Earth and Farmland: A Bland Ranking of Attentions
Creators: name: Osti, Giorgio
name: Gilli, Gabriella
name: Lovati, Chiara
Publisher: name: Sociologica
Year: 2023

description: The environmental crisis, so looming and diverse (climate change, pollution, loss of biodiversity), requires the social sciences to make every effort to identify attitudes and actions suitable for mitigating it. Empathy towards plants, animals and ecosystems appears to be a powerful category both analytically and pragmatically. The paper focuses on a great mediator between society and environment: the ‘agrosilvopastoral’ sector, wondering how much empathy plays a role in this mediation. For reaching this goal, first, a definition of empathy is delineated; then thanks to a typology of the position and analytical levels of the social sciences, different pieces of literature on earth and farmland empathy are framed; and finally, an exemplifying secondary analysis of over 60 abstracts collected from a conference on earth and farmland empathy is carried out. The literature and content analyses show two results: some scholars and practitioners do not recognise a role of mediator with ecosystems to agrosilvopastoral sector, some others adopt a bland ranking of empathy towards the human and non-human figures of agro systems. Because of their relationship with animals, shepherds are seen among the most important mediators between humans and non-humans, despite their relative isolation from social life.
description: Sociologica, Vol. 17 No. 1 (2023)
Guiding of Electrons in a Few Mode Ballistic Graphene Channel
Creators: name: Rickhaus, Peter
name: Liu, Ming-Hao
name: Makk, Péter
name: Maurand, Romain
name: Hess, Samuel
name: Zihlmann, Simon
name: Weiss, Markus
name: Richter, Klaus
name: Schönenberger, Christian
Publisher: name: arXiv
Year: 2015
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: In graphene, the extremely fast charge carriers can be controlled by electron-optical elements, such as waveguides, in which the transmissivity is tuned by the wavelength. In this work, charge carriers are guided in a suspended ballistic few-mode graphene channel, defined by electrostatic gating. By depleting the channel, a reduction of mode number and steps in the conductance are observed, until the channel is completely emptied. The measurements are supported by tight-binding transport calculations including the full electrostatics of the sample.
description: Including supporting information
title: What a Time! Il ritorno del passato tra shock e continuità in due copertine di “Time”
Creators: name: Giosué, Francesco
Publisher: name: La Rivista di Engramma
Year: 2022
Subjects: Time magazine
Ukrainian War
History
Memory

description: The essay compares the “Time” cover dedicated to the 2022 conflict between Russia and Ukraine with another wartime cover from the same magazine published in 1968. The relationship between text and image triggers reflections on the meaning of history and time: which “history” returns? Which “history” is over?
Realization of chiral symmetry breaking and restoration in holographic QCD
Creators: name: Chelabi, Kaddour
name: Fang, Zhen
name: Huang, Mei
name: Li, Danning
name: Wu, Yue-Liang
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: With proper profiles of the scalar potential and the dilaton field, for the first time, the spontaneous chiral symmetry breaking in the vacuum and its restoration at finite temperature are correctly realized in the holographic QCD framework. In the chiral limit, a nonzero chiral condensate develops in the vacuum and decreases with temperature, and the phase transition is of 2nd order for two-flavor case and of 1st order for three-flavor case. In the case of explicit chiral symmetry breaking, in two-flavor case, the 2nd order phase transition turns to crossover with any nonzero current quark mass, and in three-flavor case, the 1st order phase transition turns to crossover at a finite current quark mass. The correct description of chiral symmetry breaking and restoration makes the holographic QCD models more powerful in dealing with non-perturbative QCD phenomena. This framework can be regarded as a general set up in application of AdS/CFT to describe conventional Ginzburg-Landau-Wilson type phase transitions, e.g. in condensed matter and cosmology systems.
description: 4 pages
The mediating effect of delinquent friendship networks on the relationship between self-esteem and delinquent behaviors in adolescence
Creators: name: Mallery, Coretta J.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2006

description: This study examined the mediating effects of delinquent friendship networks on the relationship between self-esteem and delinquency in young adolescents using the data from the National Longitudinal Study of Adolescent Health. This research expanded on previous research conducted by DuBois and Silverthorn (2004) by incorporating a comprehensive measure of friendship network delinquency. Principles of Social Learning Theory were also incorporated to explain why it is important to include a peer context in delinquency research. Additionally, this study included race and gender as moderator variables. Findings indicated that delinquent peer associations were significantly related to respondent delinquency in the White, male, and female participants. This relationship was not significant for African American participants suggesting an area for future research.
Measurement and analysis of extracellular cardiac potentials to guide radiofrequency ablation therapy for fibrillation
Creators: name: Abashian, Sevan Mark
Publisher: name: University of North Carolina at Chapel Hill
Year: 2009

description: Metrics for completeness of cardiac antiarrhythmic ablation lesions are needed to guide ablation therapy. Extracellular bipolar cardiac potentials were measured on either side of the lesion in isolated rabbit hearts (N=25). Three analyses of the signals were examined as possible metrics. Variances in dominant frequency of fibrillatory recordings decreased after ablation by factors of 1.51 for the frequency-domain analysis using the Fast-Fourier Transform; and 1.45 for the time-domain analysis using intervals between super-threshold peaks. This suggests an increase in organization of fibrillation. Morphologies of the signals from different sides of the lesion examined with cross-correlation indicated no consistent change in morphology before vs. after ablation. Slow pacing to determine translesion stimulus-excitation delays (TED) showed that mean TED increased post-ablation, consistent with increased conduction path length. During fibrillation, no consistent change in TED was observed. Thus, certain metrics may be useful to distinguish lesion completeness.
Simulations on Consumer Tests: Systematic Evaluation of Tolerance Ranges by Model-Based Generation of Simulation Scenarios
Creators: name: Berger, Christian
name: Block, Delf
name: Heeren, Sönke
name: Hons, Christian
name: Kühnel, Stefan
name: Leschke, André
name: Plotnikov, Dimitri
name: Rumpe, Bernhard
Publisher: name: arXiv
Year: 2015
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: Context: Since 2014 several modern cars were rated regarding the performances of their active safety systems at the European New Car Assessment Programme (EuroNCAP). Nowadays, consumer tests play a significant role for the OEM's series development with worldwide perspective, because a top rating is needed to underline the worthiness of active safety features from the customers' point of view. Furthermore, EuroNCAP already published their roadmap 2020 in which they outline further extensions in today's testing and rating procedures that will aggravate the current requirements addressed to those systems. Especially Autonomous Emergency Braking/Forward Collision Warning systems (AEB/FCW) are going to face a broader field of application as pedestrian detection or two-way traffic scenarios. Objective: This work focuses on the systematic generation of test scenarios concentrating on specific parameters that can vary within certain tolerance ranges like the lateral position of the vehicle-under-test (VUT) and its test velocity for example. It is of high interest to examine the effect of the tolerance ranges on the braking points in different test cases representing different trajectories and velocities because they will influence significantly a later scoring during the assessments and thus the safety abilities of the regarding car. Method: We present a formal model using a graph to represent the allowed variances based on the relevant points in time. Now, varying velocities of the VUT will be added to the model while the vehicle is approaching a target vehicle. The derived trajectories were used as test cases for a simulation environment. Selecting interesting test cases and processing them with the simulation environment, the influence on the system's performance of different test parameters will be investigated.
description: 15 pages, 6 figures, Fahrerassistenzsysteme und Integrierte Sicherheit, VDI Berichte 2014, pp. 403-418
Becoming the Wig: Mis/Identifications and Citationality in Queer Rock Musicals
Creators: name: Riley, Samantha Michele
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2008

description: Performative citationality operates as a fetish in the queer musicals of The Rocky Horror Picture Show, Hedwig and the Angry Inch, and Stadt der verlorenen Seelen. One watches queer musicals, as well as performs alongside queer characters through audience participation, to satisfy a desire to overstep limits of the performance of gender and sexuality, and essentially, our identity, in a sublime way. This desire must be blocked or disavowed, however, in order for one to return to heteronormality, which is done here through the mechanism of citationality. Viewers latch onto citations to disavow the queering that is taking place. This queering is manifested out of the excess that is exhumed from the sublime encounter with the queer performance of the film through aid of the queered citations. At the same time the film queers those viewers watching it, if only momentarily. Still, viewers maintain that they love the musical just for the music.
Delay-Optimal Buffer-Aware Probabilistic Scheduling with Adaptive Transmission
Creators: name: Chen, Xiang
name: Chen, Wei
Publisher: name: arXiv
Year: 2015
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: Cross-layer scheduling is a promising way to improve Quality of Service (QoS) given a power constraint. In this paper, we investigate the system with random data arrival and adaptive transmission. Probabilistic scheduling strategies aware of the buffer state are applied to generalize conventional deterministic scheduling. Based on this, the average delay and power consumption are analysed by Markov reward process. The optimal delay-power tradeoff curve is the Pareto frontier of the feasible delay-power region. It is proved that the optimal delay-power tradeoff is piecewise-linear, whose vertices are obtained by deterministic strategies. Moreover, the corresponding strategies of the optimal tradeoff curve are threshold-based, hence can be obtained by a proposed effective algorithm. On the other hand, we formulate a linear programming to minimize the average delay given a fixed power constraint. By varying the power constraint, the optimal delay-power tradeoff curve can also be obtained. It is demonstrated that the algorithm result and the optimization result match each other, and are further validated by Monte-Carlo simulation.
description: 6 pages, 4 figures, accepted by IEEE ICCC 2015
Variance inequalities for quadratic forms with applications
Creators: name: Yaskov, Pavel
Publisher: name: arXiv
Year: 2015
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60F25

description: We obtain variance inequalities for quadratic forms of weakly dependent random variables with bounded fourth moments. We also discuss two application. Namely, we use these inequalities for deriving the limiting spectral distribution of a random matrix and estimating the long-run variance of a stationary time series.
Quasi-two-dimensional Fermi surfaces of the heavy-fermion superconductor Ce$_2$PdIn$_8$
Creators: name: Götze, K.
name: Klotz, J.
name: Gnida, D.
name: Harima, H.
name: Aoki, D.
name: Demuer, A.
name: Elgazzar, S.
name: Wosnitza, J.
name: Kaczorowski, D.
name: Sheikin, I.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We report low-temperature de Haas-van Alphen (dHvA) effect measurements in magnetic fields up to 35 T of the heavy-fermion superconductor Ce$_2$PdIn$_8$. The comparison of the experimental results with band-structure calculations implies that the 4$f$ electrons are itinerant rather than localized. The cyclotron masses estimated at high field are only moderately enhanced, 8 and 14 $m_0$, but are substantially larger than the corresponding band masses. The observed angular dependence of the dHvA frequencies suggests quasi-two-dimensional Fermi surfaces in agreement with band-structure calculations. However, the deviation from ideal two dimensionality is larger than in CeCoIn$_5$, with which Ce$_2$PdIn$_8$ bears a lot of similarities. This subtle distinction accounts for the different superconducting critical temperatures of the two compounds.
description: accepted to Phys. Rev. B
An Investigation of Using a Polynomial Loglinear Model to Evaluate Differences in Test Score Distributions
Creators: name: Talley, Diane
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2009

description: The purpose of this study was to examine the power of the Hanson method for determining differences in score distributions across multiple forms of an examination when sample sizes are small. The study used simulated data generated in SAS. The Hanson method was applied to three pairs of score distributions that varied by standard mean differences (SMD) for sample sizes of 3500, 3000, 2500, 2000, 1500, 1000, 500, 250, 200, 150, 100, 50, and 25, 1000 times each. The results indicated that the Hanson method was not sensitive to distributional differences as sample size decreased and the sensitivity of the method depended on the size of the SMD. For score distributions with very small SMDs (.008), the power of the Hanson method decreased beginning with n=2000. Score distributions with larger SMDs (.33 and .79) required smaller sample sizes (around n=100) to detect these larger differences.
Effect of Age of Acquisition on Concept Mediation in Heritage Bilinguals
Creators: name: Ghanim, Iyad
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2016

description: Current models of bilingual lexical systems represent a shared conceptual domain and separate, language-dependent domains. Regarding the second language domain, researchers propose L2 words share a direct connection to the conceptual domain only for fluent bilinguals. Conversely, for non-fluent bilinguals, L2 words lack a direct conceptual connection and instead are connected via L1 translation equivalents. However, previous studies confounded age of acquisition with proficiency as variables that contribute to concept mediation. The present thesis disentangles these variables’ respective effects on developing concept mediation. Thirteen heritage Arabic-English bilinguals are subject to a picture-naming task and a translation task. Heritage speakers’ response times match the concept mediation model irrespective of proficiency, with the exception of low proficiency speakers. These results indicate that for individuals who acquired a language at an early age, moderate loss of language proficiency may not remove lexico-conceptual links.
Development of a Lebanese food exchange system based on frequently consumed Eastern Mediterranean traditional dishes and Arabic sweets
Creators: name: Hoteit, Maha
name: zoghbi, Edwina
name: Rady, Alissar
name: Shankiti, Iman
name: Al-Jawaldeh, Ayoub
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Life Sciences
subject: Food Science
subject: Exchange List Lebanon

description: The aim of this project is to convert the recipes of the Lebanese traditional dishes and Arabic sweets into meal planning exchange lists whose items are expressed in grams and adjusted to Lebanese household measures (cups and spoons) that could be used by healthcare professionals.
Bose-Einstein condensation as an alternative to inflation
Creators: name: Das, Saurya
Publisher: name: arXiv
Year: 2015
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: It was recently shown that gravitons with a very small mass should have formed a Bose-Einstein condensate in the very early Universe, whose density and quantum potential can account for the dark matter and dark energy in the Universe respectively. Here we show that the condensation can also naturally explain the observed large scale homogeneity and isotropy of the Universe. Furthermore gravitons continue to fall into their ground state within the condensate at every epoch, accounting for the observed flatness of space at cosmological distances scales. Finally, we argue that the density perturbations due to quantum fluctuations within the condensate give rise to a scale invariant spectrum. This therefore provides a viable alternative to inflation, which is not associated with the well-known problems associated with the latter.
description: This essay received an Honorable Mention in the 2015 Gravity Research Foundation Essay Competition
On the operator homology of the Fourier algebra and its $cb$-multiplier completion
Creators: name: Crann, Jason
name: Tanko, Zsolt
Publisher: name: arXiv
Year: 2016
Subjects: subject: Operator Algebras (math.OA)
subject: Functional Analysis (math.FA)
subject: FOS: Mathematics

description: We study various operator homological properties of the Fourier algebra $A(G)$ of a locally compact group $G$. Establishing the converse of two results of Ruan and Xu, we show that $A(G)$ is relatively operator 1-projective if and only if $G$ is IN, and that $A(G)$ is relatively operator 1-flat if and only if $G$ is inner amenable. We also exhibit the first known class of groups for which $A(G)$ is not relatively operator $C$-flat for any $C\geq1$. As applications of our techniques, we establish a hereditary property of inner amenability, answer an open question of Lau and Paterson, and answer an open question of Anantharaman--Delaroche on the equivalence of inner amenability and Property (W). In the bimodule setting, we show that relative operator 1-biflatness of $A(G)$ is equivalent to the existence of a contractive approximate indicator for the diagonal $G_Δ$ in the Fourier--Stieltjes algebra $B(G\times G)$, thereby establishing the converse to a result of Aristov, Runde, and Spronk. We conjecture that relative $1$-biflatness of $A(G)$ is equivalent to the existence of a quasi-central bounded approximate identity in $L^1(G)$, that is, $G$ is QSIN, and verify the conjecture in many special cases. We finish with an application to the operator homology of $A_{cb}(G)$, giving examples of weakly amenable groups for which $A_{cb}(G)$ is not operator amenable.
description: v3: final version, 22 pages
Propuesta de lineamientos para el diseño de estrategias que contribuyan al proceso de elección de arma de los alféreces en la Escuela Militar de Cadetes “General José María Córdova”
Creators: name: Corcione Nieto, Maria
name: Cabrera, Leidy
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Education
subject: Social and Behavioral Sciences

description: Documento de trabajo que contiene la propuesta de lineamientos para la escogencia de arma en la ESMIC
Temporal Coupling in Emotional Interactions
Creators: name: Bachmann, Julia
name: Krüger, Britta
name: Munzert, Jörn
name: Zabicki, Adam
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Cognition and Perception
subject: Social and Behavioral Sciences
subject: Psychology
subject: FOS: Psychology

description: OSF project containing all relevant data, code, and useful links regarding our project.
Near Infrared studies during maximum and early decline of Nova Cephei 2014 and Nova Scorpii 2015
Creators: name: Srivastava, Mudit K.
name: Ashok, N. M.
name: Banerjee, D. P. K.
name: Sand, D.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present multi-epoch near-infrared photo-spectroscopic observations of Nova Cephei 2014 and Nova Scorpii 2015, discovered in outburst on 2014 March 8.79 UT and 2015 February 11.84 UT respectively. Nova Cep 2014 shows the conventional NIR characteristics of a Fe II class nova characterized by strong CI, HI and O I lines, whereas Nova Sco 2015 is shown to belong to the He/N class with strong He I, HI and OI emission lines. The highlight of the results consists in demonstrating that Nova Sco 2015 is a symbiotic system containing a giant secondary. Leaving aside the T CrB class of recurrent novae, all of which have giant donors, Nova Sco 2015 is shown to be only the third classical nova to be found with a giant secondary. The evidence for the symbiotic nature is three-fold; first is the presence of a strong decelerative shock accompanying the passage of the nova's ejecta through the giant's wind, second is the H$α$ excess seen from the system and third is the spectral energy distribution of the secondary in quiescence typical of a cool late type giant. The evolution of the strength and shape of the emission line profiles shows that the ejecta velocity follows a power law decay with time ($t^{-1.13 \pm 0.17}$). A Case B recombination analysis of the H I Brackett lines shows that these lines are affected by optical depth effects for both the novae. Using this analysis we make estimates for both the novae of the emission measure $n_e^2L$, the electron density $n_e$ and the mass of the ejecta.
description: 13 Pages, 12 Figures, 5 Tables, Accepted for Publication in MNRAS
First Principle Surface Analysis of YF3 and Isostructural HoF3
Creators: name: Anders, Jennifer
name: Limberg, Niklas
name: Paulus, Beate
Publisher: name: Freie Universität Berlin
Year: 2022
Subjects: subject: geochemical twins
subject: REE
subject: HFSE
subject: waimirite
subject: DFT
subject: DFT+U
subject: Hubbard
subject: surface energy
subject: 500 Naturwissenschaften und Mathematik::540 Chemie::540 Chemie und zugeordnete Wissenschaften

description: The trifluorides of the two high field strength elements yttrium and holmium are studied by periodic density functional theory. As a lanthanide, holmium also belongs to the group of rare earth elements (REE). Due to their equivalent geochemical behavior, both elements form a geochemical twin pair and consequently, yttrium is generally associated with the REE as REE+Y. Interestingly, it has been found that DFT/DFT+U describe bulk HoF3 best, when the 4f-electrons are excluded from the valence region. An extensive surface stability analysis of YF3 (PBE) and HoF3 (PBE+Ud/3 eV/4f-in-core) using two-dimensional surface models (slabs) is performed. All seven low-lying Miller indices surfaces are considered with all possible stoichiometric or substoichiometric terminations with a maximal fluorine-deficit of two. This leads to a scope of 24 terminations per compound. The resulting Wulff plots consists of seven surfaces with 5–26% abundance for YF3 and six surfaces with 6–34% for HoF3. The stoichiometric (010) surface is dominating in both compounds. However, subtle differences have been found between these two geochemical twins.
MUSIC for multidimensional spectral estimation: stability and super-resolution
Creators: name: Liao, Wenjing
Publisher: name: arXiv
Year: 2015
Subjects: subject: Information Theory (cs.IT)
subject: Numerical Analysis (math.NA)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics
subject: 65T40

description: This paper presents a performance analysis of the MUltiple SIgnal Classification (MUSIC) algorithm applied on $D$ dimensional single-snapshot spectral estimation while $s$ true frequencies are located on the continuum of a bounded domain. Inspired by the matrix pencil form, we construct a D-fold Hankel matrix from the measurements and exploit its Vandermonde decomposition in the noiseless case. MUSIC amounts to identifying a noise subspace, evaluating a noise-space correlation function, and localizing frequencies by searching the $s$ smallest local minima of the noise-space correlation function. In the noiseless case, $(2s)^D$ measurements guarantee an exact reconstruction by MUSIC as the noise-space correlation function vanishes exactly at true frequencies. When noise exists, we provide an explicit estimate on the perturbation of the noise-space correlation function in terms of noise level, dimension $D$, the minimum separation among frequencies, the maximum and minimum amplitudes while frequencies are separated by two Rayleigh Length (RL) at each direction. As a by-product the maximum and minimum non-zero singular values of the multidimensional Vandermonde matrix whose nodes are on the unit sphere are estimated under a gap condition of the nodes. Under the 2-RL separation condition, if noise is i.i.d. gaussian, we show that perturbation of the noise-space correlation function decays like $\sqrt{\log(\#(\mathbf{N}))/\#(\mathbf{N})}$ as the sample size $\#(\mathbf{N})$ increases. When the separation among frequencies drops below 2 RL, our numerical experiments show that the noise tolerance of MUSIC obeys a power law with the minimum separation of frequencies.
description: To appear in IEEE Transactions on Signal Processing
Orbital Magnetization of Quantum Spin Hall Insulator Nanoparticles
Creators: name: Potasz, P.
name: Fernandez-Rossier, J.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Both spin and orbital degrees of freedom contribute to the magnetic moment of isolated atoms. However, when inserted in crystals, atomic orbital moments are quenched because of the lack of rotational symmetry that protects them when isolated. Thus, the dominant contribution to the magnetization of magnetic materials comes from electronic spin. Here we show that nanoislands of quantum spin Hall insulators can host robust orbital edge magnetism whenever their highest occupied Kramers doublet is singly occupied, upgrading the spin edge current into a charge current. The resulting orbital magnetization scales linearly with size, outweighing the spin contribution for islands of a few nm in size. This linear scaling is specific of the Dirac edge states and very different from Schrodinger electrons in quantum rings. Modelling Bi(111) flakes, whose edge states have been recently observed, we show that orbital magnetization is robust with respect to disorder, thermal agitation, shape of the island and crystallographic direction of the edges, reflecting its topological protection.
description: 7 pages, 5 figures, + Supporting Information
Multiple nodeless superconducting gaps in noncentrosymmetric superconductor PbTaSe2 with topological bulk nodal lines
Creators: name: Wang, M. X.
name: Xu, Y.
name: He, L. P.
name: Zhang, J.
name: Hong, X. C.
name: Cai, P. L.
name: Wang, Z. B.
name: Dong, J. K.
name: Li, S. Y.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Low-temperature thermal conductivity measurements were performed on single crystal of PbTaSe$_2$, a noncentrosymmetric superconductor with topological bulk nodal lines in the electronic band structure. It is found that the residual linear term $κ_0/T$ is negligible in zero magnetic field. Furthermore, the field dependence of $κ_0/T$ exhibits a clear "$S$"-shape curve. These results suggest that PbTaSe$_2$ has multiple nodeless superconducting gaps. Therefore, the spin-triplet state with gap nodes does not play an important role in this noncentrosymmetric superconductor with strong spin-orbital coupling. The fully gapped superconducting state also meets the requirement of a topological superconductor, if PbTaSe$_2$ is indeed the case.
description: 5 pages, 4 figures
Improving the mental health of farmers: what types of remote support are acceptable, feasible, and improve outcomes? A feasibility RCT
Creators: name: Van Woerden, Hugo
Publisher: name: Open Science Framework
Year: 2023
Subjects: subject: Medicine and Health Sciences

description: Background The farming community have high rates of poor mental health, and are relatively ‘hard to reach’ with mental health services. The aim of this study was therefore to undertake a feasibility RCT, based on two mental health interventions. These were (1) CBT based ‘Living Life to the Full for Farming Communities’ (LLTTF-F; www.llttf.com), and (2) a holistic social and emotional support service delivered by the Royal Scottish Agricultural Benevolent Institution (RSABI). The feasibility was supplemented by process evaluation. Methods This feasibility study aimed to recruit 40 individuals from the farming community who were experiencing a common health problem defined as a score of >=8 on PHQ-9. A snowball approach was used to recruit interested individuals who had an association with farming. An initial telephone call screened for eligibility and obtained consent to randomisation to the two specified interventions, or to a thirdly group receiving a combination of both LLTTF-F and ‘Social and emotional support’. Participants were permitted to override the randomised option if they expressed a strong preference before the interventions began.
Objectivity and Orgasm
Creators: name: Al Ghoul, Samantha
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2018

description: Lloyd (2005) analyzes every proposed evolutionary explanation of female orgasm and argues that all but one suﬀer from serious evidential errors. Lloyd attributes these errors to two main biases: androcentrism and adaptationism. But, there is an alternative explanation for the discrepancies in the case of the female orgasm that Lloyd’s analysis overlooks. I present and argue for the plausibility of this alternative explanation. In short, the alternative explanation is that an imprecise definition of orgasm is what’s partially responsible for the missteps in this research domain. Further, Lloyd takes her analysis to support Lonigno’s (1990) Contextual Empiricist model. Insofar as Lloyd’s analysis fails to capture an important part of scientific practice the alternative explanation picks out, this might reveal a shortcoming for Contextual Empiricism.
Italy, Denmark and Germany: A comparative analysis in active and passive labour market policies
Creators: name: Bazzani, Tania
Publisher: name: Humboldt-Universität zu Berlin
Year: 2017
Subjects: subject: active labour market policies
subject: ALMP
subject: unemployment benefits
subject: comparative
subject: EU
subject: 340 Recht

description: The article analyses the latest reforms in active and passive labour market policies (LMPs) in Germany, Italy and Denmark, within a European perspective. These Member States employ three of the various kinds of social security systems found in the EU - Continental, Mediterranean and Nordic - and provide an interesting example for comparison of differences/common trends in LMPs. This contribution focuses particularly on the principal characteristics of each protection system in the event of unemployment and on the relationships between unemployment benefits and activation policies and highlights the links between the European Employment Guidelines and the regulation under analysis.
Linear magnetotransport in monolayer MoS$_2$
Creators: name: Wang, C. M.
name: Lei, X. L.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: A momentum balance equation is developed to investigate the magnetotransport properties in monolayer molybdenum disulphide when a strong perpendicular magnetic field and a weak in-plane electric field are applied simultaneously. At low temperature, in the presence of intravalley impurity scattering Shubnikov de Haas oscillation shows up accompanying by a beating pattern arising from large spin splitting and its period may halve due to high-order oscillating term at large magnetic field for samples with ultrahigh mobility. In the case of intervalley disorders, there exists a magnetic-field range where the magnetoresistivity almost vanishes. For low-mobility layer, a phase-inversion of oscillating peaks is acquired in accordance with recent experiment. At high temperature when Shubnikov de Haas oscillation is suppressed, the magnetophonon resonances induced by both optical phonons (mainly due to homopolar and Fröhlich modes) and acoustic phonons (mainly due to intravalley transverse and longitudinal acoustic modes) emerge for suspended system with high mobility. For the single layer on a substrate, another resonance due to surface optical phonons may occur, resulting in a complex behavior of the total magnetoresistance. The beating pattern of magnetophonon resonance due to optical phonons can also be observed. However, for nonsuspended layer with low mobility, the magnetoresistance oscillation almost disappears and the resistivity increases with field monotonously.
The Agreement for Temporary Service of a Diocesan Priest Outside His Diocese of Incardination According to Canon 271 of the 1983 Code of Canon Law
Creators: name: Obel, Andrew Kinarah
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2017
Subjects: Agreement
Temporary
Service
Priest

description: Canon 271, §1 of the CIC calls for an agreement between the bishops a quo and ad quem for the temporary service of diocesan clerics outside their dioceses of incardination. The purpose of the agreement is to determine and safeguard the rights and duties of the priests and bishops involved. A 1980 document of the Congregation for the Clergy, Postquam apostoli provides some of the juridical elements that should constitute the content of such an agreement. This thesis is an in-depth study and investigation of the agreement with the aim of contributing additional canonical elements that need to be included in it to make it reflect the current situation faced by the priests and bishops involved. To provide the context under which the written agreement originated, the thesis, in its first chapter, traces the history of the law on the movement of clerics from one diocese to another beginning from the early church period up to the CIC. It examines the various juridic norms that existed before the CIC and observes that throughout its history, the Church has regulated the ministry and movement of clerics by formulating stringent laws that forbade clerics from moving unnecessarily. In the second chapter, the thesis examines the current law on the temporary service of diocesan clerics outside their dioceses of incardination as stipulated in CIC, c. 271. This analysis includes tracing the textual development of the canon and critical analysis of its components. Chapter three carefully discusses the canonical elements that need to be included in the written agreement, and investigates the contractual, binding and obligatory nature of the agreement. It concludes that the agreement (conventio), although not explicitly called a contract (contractus), binds the parties involved, and diocesan bishops are obligated to enter it when they welcome foreign clerics to minister in their dioceses. The fourth chapter is dedicated to the discussion of the drafting process and implementation of the agreement. It analyses eight sample agreements from selected dioceses in Canada, the United States of America and Uganda and highlights the need of drafting the agreement accurately in conformity with the provisions of CIC, c. 271 and the pertinent norms of Postquam apostoli. The analysis of the sample agreements further adds a practical dimension to the thesis and provides examples that other dioceses can use for drafting their own agreements.
A Quasi-Bayesian Perspective to Online Clustering
Creators: name: Li, Le
name: Guedj, Benjamin
name: Loustau, Sébastien
Publisher: name: arXiv
Year: 2016
Subjects: subject: Machine Learning (stat.ML)
subject: Statistics Theory (math.ST)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: When faced with high frequency streams of data, clustering raises theoretical and algorithmic pitfalls. We introduce a new and adaptive online clustering algorithm relying on a quasi-Bayesian approach, with a dynamic (i.e., time-dependent) estimation of the (unknown and changing) number of clusters. We prove that our approach is supported by minimax regret bounds. We also provide an RJMCMC-flavored implementation (called PACBO, see https://cran.r-project.org/web/packages/PACBO/index.html) for which we give a convergence guarantee. Finally, numerical experiments illustrate the potential of our procedure.
Making headway: an exploratory study of the perceptions of and composition of NCAA Division I concussion management plans
Creators: name: Fratarcangeli, Devin Gabrielle
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2012

description: Concussion in sport has attracted substantial attention from the media and the public. Stories depicting the fatality of concussion have raised concern for athletes. It is estimated that 300,000 sport-related traumatic brain injuries occur in the United States annually. Research shows that the frequency and severity of the brain impact leads to symptoms that can last for as little as several hours to a lifetime. Resulting from the increased awareness and knowledge of concussions in addition to the influence of litigation, the National Collegiate Athletic Association (NCAA) furthered its dedication to the health of student-athletes in 2010 by mandating that all member institutions must have written concussion management plans on file. The purpose of this study was to analyze the perceptions of Division I athletic administrators and sports medicine personnel of concussion management plans and to determine the composition of those plans.
Negative curvature in graphical small cancellation groups
Creators: name: Arzhantseva, Goulnara N.
name: Cashen, Christopher H.
name: Gruber, Dominik
name: Hume, David
Publisher: name: arXiv
Year: 2016
Subjects: subject: Group Theory (math.GR)
subject: Metric Geometry (math.MG)
subject: FOS: Mathematics
subject: 20F06 (Primary) 20F65, 20F67 (Secondary)

description: We use the interplay between combinatorial and coarse geometric versions of negative curvature to investigate the geometry of infinitely presented graphical $Gr'(1/6)$ small cancellation groups. In particular, we characterize their 'contracting geodesics', which should be thought of as the geodesics that behave hyperbolically. We show that every degree of contraction can be achieved by a geodesic in a finitely generated group. We construct the first example of a finitely generated group $G$ containing an element $g$ that is strongly contracting with respect to one finite generating set of $G$ and not strongly contracting with respect to another. In the case of classical $C'(1/6)$ small cancellation groups we give complete characterizations of geodesics that are Morse and that are strongly contracting. We show that many graphical $Gr'(1/6)$ small cancellation groups contain strongly contracting elements and, in particular, are growth tight. We construct uncountably many quasi-isometry classes of finitely generated, torsion-free groups in which every maximal cyclic subgroup is hyperbolically embedded. These are the first examples of this kind that are not subgroups of hyperbolic groups. In the course of our analysis we show that if the defining graph of a graphical $Gr'(1/6)$ small cancellation group has finite components, then the elements of the group have translation lengths that are rational and bounded away from zero.
description: 40 pages, 14 figures, v2: improved introduction, updated statement of Theorem 4.4, v3: new title (previously: "Contracting geodesics in infinitely presented graphical small cancellation groups"), minor changes, to appear in Groups, Geometry, and Dynamics
title: Maßnahmen zur Erhaltung des umweltgerechten Recyclings von Feuerfestreststoffen und der nachhaltigen Nutzung von Elektrolichtbogenofenschlanken unter besonderer Berücksichtigung der Herkunft und des Verhaltens von Fluorid
title: Abschlussbericht über ein Entwicklungsprojekt
titleType: Subtitle
Creators: name: Sokol, Anna K.
name: Mieck, Burkhard
name: Leson, Martin
Publisher: name: Mineralmahlwerk Westerwald Horn GmbH & Co. KG
Year: 2017

description: Ziele des Forschungsvorhabens waren, die Sicherung der umweltgerechten Verwendung von Elektroofenschlacken (EOS) sowie die Erhaltung der hohen VenNertungsrate von Feuerfestreststoffen zu Schlackenbildnern (Dolo-Regenerat). Da in Auslaugversuchen trotz des Verzichts auf den Einsatz von Flussspat im untersuchten Elektrostahlwerk Fluorid nachgewiesen werden konnte, sollten die Fluorideinträge in den Elektroofen ermittelt und ggf. Vermindert werden. Die Untersuchungen gliederten sich in: - Entwicklung eines Verfahrens zur Bestimmung geringer Fluoridgehalte - Untersuchung der Eingangsstoffe in den Elektroofen - Untersuchung der Herkunft sowie der Feststoffgehalte der Ausgangsstoffe für die Schlackenbildner aus Feuerfestreststoffen - Feststoff- und Auslauguntersuchungen der EOS in Bezug zu den Eingangsstoffen - XRD- und REM-Untersuchungen zur Bestimmung der Bindungsform des Fluorids Des Weiteren sollten das in den EOS enthaltene Fluorid fest eingebunden werden, so dass die Löslichkeit des Fluorids reduziert wird. Die Untersuchungen gliederten sich in: - Untersuchung des Einflusses der Abkühlbedingungen der schmelzflüssigen EOS in Schmelzversuchen - Konditionierung der EOS mit Zuschlagstoffen bzw. Veränderung des Sauerstoffpartialdruckes in Schmelzversuchen
Effectiveness of insertion techniques in peripherally inserted central catheter to prevent catheter failure in adults: systematic review and meta-analysis
Creators: name: Fernandes, Daiane
name: Margatho, Amanda
name: Scoqui, Carolina
name: Vasques, Christiane
name: Ciol, Marcia
name: Silveira, Renata
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Medicine and Health Sciences

description: Among the available vascular access devices, the Peripherally Inserted Central Catheter (PICC) has been widely used in intravenous therapy. However, PICC insertion and management are not complication-free. In the literature, some of the complications refer to PICC failure, which occurs when the catheter has to be removed before the end of therapy, due to a set of complications that can be mechanical, infectious and vascular. From the point of view of the insertion technique and catheter management, there are several factors that can interfere in the failure or success of the PICC. Insertion guided by vascular visualization technology using the ultrasound device increases patient safety when compared to insertion guided by anatomical landmarks. This safety is related to a greater chance of successful catheter insertion, reduced need for catheter repositioning, fewer venous punctures, reduction of complications, such as PICC failure, and greater patient satisfaction. The insertion of the PICC using an electrocardiographic guide, which shows in real time the correct position of the catheter tip and allows instant correction in case of its malposition, leads to significantly more successful catheter placements, prompt treatment, less need for post-procedural repositioning, and fewer catheter complications at insertion and during the use of the catheter. No systematic review and meta-analysis studies were identified on which PICC insertion technique is more effective in reducing the occurrence of complications and failure during the use of the catheter.