cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Assessing the efficacy of a bioflavonoid-based mouth rinse in reducing oral malodor related to removable orthodontic appliances in comparison to chlorhexidine
Creators: name: Alsabban, Hajer
Publisher: name: University of British Columbia
Year: 2017

description: Halitosis is an unpleasant breath odor; it affects roughly 30-50% of the population. The major compounds that contribute to halitosis that originates from the mouth, typically referred to as oral malodor, are volatile sulfur compounds (VSCs), which are produced by a variety of microorganisms. It has been shown that orthodontic patients with acrylic appliances complain of oral malodor. The source of the odor is in part due to the nature of the appliance, which retains microorganisms that are not removed by mechanical cleaning so typically the addition of an antimicrobial agent, such as Chlorhexidine (CHX) to cleanse the appliances is recommended. However, CHX has some side effects so alternatives need to be explored. Objective: To assess the antimicrobial and the anti-malodor efficacy of a bioflavonoid mouth rinse (BFMR) compared to CHX and water on removable orthodontic appliances. Method: Participants between 8-20 years of age who complained of malodor from their removable orthodontic appliances from the UBC dental clinics and a private orthodontic practice were recruited and blindly randomized into groups in which different mouth rinses were used to soak the appliances for one week (BFMR, Chlorhexidine and water). Baseline and one-week follow-up data collection included the oral hygiene index (OHI), gingival index (GI), tongue coating index (TCI), VSC measurement by gas chromatography, organoleptic assessment, a microbial swab Results: Data was collected from 27 participants ranging in age from 8-16 years old. The baseline measurements of OHI, GI and TCI did not change significantly throughout the study. The organoleptic measurements of odor as well as the aerobic and anaerobic bacterial counts showed a significant reduction in the BFMR group, but for the CHX and water group no significant difference was detected from baseline to follow-up. Conclusion: The BFMR has superior antimicrobial and anti-malodor effect when compared to CHX or to water.
The core FOXG1 syndrome phenotype consists of postnatal microcephaly, severe mental retardation, absent language, dyskinesia, and corpus callosum hypogenesis
Creators: name: Kortüm, Fanny
name: Das, Soma
name: Flindt, Max
name: Uyanik, Gökhan
Publisher: name: Universität Regensburg
Year: 2011
Subjects: subject: 610 Medizin

description: Background: Submicroscopic deletions in 14q12 spanning FOXG1 or intragenic mutations have been reported in patients with a developmental disorder described as a congenital variant of Rett syndrome. This study aimed to further characterise and delineate the phenotype of FOXG1 mutation positive patients. Method: The study mapped the breakpoints of a 2;14 translocation by fluorescence in situ hybridisation and analysed three chromosome rearrangements in 14q12 by cytogenetic analysis and/or array comparative genomic hybridisation. The FOXG1 gene was sequenced in 210 patients, including 129 patients with unexplained developmental disorders and 81 MECP2 mutation negative individuals. Results: One known mutation, seen in two patients, and nine novel mutations of FOXG1 including two deletions, two chromosome rearrangements disrupting or displacing putative cis-regulatory elements from FOXG1, and seven sequence changes, are reported. Analysis of 11 patients in this study, and a further 15 patients reported in the literature, demonstrates a complex constellation of features including mild postnatal growth deficiency, severe postnatal microcephaly, severe mental retardation with absent language development, deficient social reciprocity resembling autism, combined stereotypies and frank dyskinesias, epilepsy, poor sleep patterns, irritability in infancy, unexplained episodes of crying, recurrent aspiration, and gastro-oesophageal reflux. Brain imaging studies reveal simplified gyral pattern and reduced white matter volume in the frontal lobes, corpus callosum hypogenesis, and variable mild frontal pachgyria. Conclusions: These findings have significantly expanded the number of FOXG1 mutations and identified two affecting possible cis-regulatory elements. While the phenotype of the patients overlaps both classic and congenital Rett syndrome, extensive clinical evaluation demonstrates a distinctive and clinically recognisable phenotype which the authors suggest designating as the FOXG1 syndrome.
Resolving Subhaloes' Lives with the Hierarchical Bound-Tracing Algorithm
Creators: name: Han, Jiaxin
name: Jing, Y. P.
name: Wang, Huiyuan
name: Wang, Wenting
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: We develop a new code, the Hierarchical Bound-Tracing (HBT for short) code, to find and trace dark matter subhaloes in simulations based on the merger hierarchy of dark matter haloes. Application of this code to a recent benchmark test of finding subhaloes demonstrates that HBT stands as one of the best codes to trace the evolutionary history of subhaloes. The success of the code lies in its careful treatment of the complex physical processes associated with the evolution of subhaloes and in its robust unbinding algorithm with an adaptive source subhalo management. We keep a full record of the merger hierarchy of haloes and subhaloes, and allow growth of satellite subhaloes through accretion from its "satellite-of-satellites", hence allowing mergers among satellites. Local accretion of background mass is omitted, while rebinding of stripped mass is allowed. The justification of these treatments is provided by case studies of the lives of individual subhaloes and by the success in finding the complete subhalo catalogue. We compare our result to other popular subhalo finders and show that HBT is able to well resolve subhaloes in high density environment and keep strict physical track of subhaloes' merger history. This code is fully parallelized and freely available upon request to the authors.
description: 15 pages; accepted for publication by MNRAS
Polarized $Z$ cross sections in Higgsstrahlung for the determination of anomalous $ZZH$ couplings
Creators: name: Rao, Kumar
name: Rindani, Saurabh D.
name: Sarmah, Priyanka
name: Singh, Balbeer
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The production of a Higgs boson in association with a $Z$ at an electron-positron collider is one of the cleanest methods for the measurement of the couplings of the Higgs boson. In view of the large production cross section at energies a little above the threshold, it seems feasible to make a more detailed study of the process by measuring the cross sections for polarized $Z$ in order to measure possible anomalous $ZZH$ couplings. We show that certain combinations of cross sections in $e^+e^- \to ZH$ with different $Z$ polarizations help to enhance or isolate the effect of one of the two kinds of anomalous $ZZH$ couplings possible on general grounds of CP and Lorentz invariance. These combinations can be useful to get information on the $ZZH$ coupling in the specific contexts of an effective field theory, two-Higgs-doublet models, and composite Higgs models, in a relatively model-independent fashion. We find in particular that the longitudinal helicity fraction of the $Z$ is expected to be insensitive to anomalous couplings, and would be close to its value in the standard model in the scenarios we consider. We also discuss the sensitivity of the proposed measurements to the anomalous couplings, including longitudinal beam polarizations, which suppress backgrounds, and can improve the sensitivity if appropriately chosen.
description: This is a shorter version of arXiv:2202.10215v1. This shorter version is published in Phys. Lett. B
The evolutionary dynamics of protein-protein interaction networks inferred from the reconstruction of ancient networks
Creators: name: Jin, Yuliang
name: Turaev, Dmitrij
name: Weinmaier, Thomas
name: Rattei, Thomas
name: Makse, Hernan A.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Molecular Networks (q-bio.MN)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: Cellular functions are based on the complex interplay of proteins, therefore the structure and dynamics of these protein-protein interaction (PPI) networks are the key to the functional understanding of cells. In the last years, large-scale PPI networks of several model organisms were investigated. Methodological improvements now allow the analysis of PPI networks of multiple organisms simultaneously as well as the direct modeling of ancestral networks. This provides the opportunity to challenge existing assumptions on network evolution. We utilized present-day PPI networks from integrated datasets of seven model organisms and developed a theoretical and bioinformatic framework for studying the evolutionary dynamics of PPI networks. A novel filtering approach using percolation analysis was developed to remove low confidence interactions based on topological constraints. We then reconstructed the ancient PPI networks of different ancestors, for which the ancestral proteomes, as well as the ancestral interactions, were inferred. Ancestral proteins were reconstructed using orthologous groups on different evolutionary levels. A stochastic approach, using the duplication-divergence model, was developed for estimating the probabilities of ancient interactions from today's PPI networks. The growth rates for nodes, edges, sizes and modularities of the networks indicate multiplicative growth and are consistent with the results from independent static analysis. Our results support the duplication-divergence model of evolution and indicate fractality and multiplicative growth as general properties of the PPI network structure and dynamics.
Systems with large flexible server pools: Instability of "natural" load balancing
Creators: name: Stolyar, Alexander L.
name: Yudovina, Elena
Publisher: name: arXiv
Year: 2010
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics

description: We consider general large-scale service systems with multiple customer classes and multiple server (agent) pools, mean service times depend both on the customer class and server pool. It is assumed that the allowed activities (routing choices) form a tree (in the graph with vertices being both customer classes and server pools). We study the behavior of the system under a natural (load balancing) routing/scheduling rule, Longest-Queue Freest-Server (LQFS-LB), in the many-server asymptotic regime, such that the exogenous arrival rates of the customer classes, as well as the number of agents in each pool, grow to infinity in proportion to some scaling parameter $r$. Equilibrium point of the system under LQBS-LB is the desired operating point, with server pool loads minimized and perfectly balanced. Our main results are as follows. (a) We show that, quite surprisingly (given the tree assumption), for certain parameter ranges, the fluid limit of the system may be unstable in the vicinity of the equilibrium point; such instability may occur if the activity graph is not "too small." (b) Using (a), we demonstrate that the sequence of stationary distributions of diffusion-scaled processes [measuring $O(\sqrt{r})$ deviations from the equilibrium point] may be nontight, and in fact may escape to infinity. (c) In one special case of interest, however, we show that the sequence of stationary distributions of diffusion-scaled processes is tight, and the limit of stationary distributions is the stationary distribution of the limiting diffusion process.
description: Published in at http://dx.doi.org/10.1214/12-AAP895 the Annals of Applied Probability (http://www.imstat.org/aap/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Oxidation mechanism in metal nanoclusters: Zn nanoclusters to ZnO hollow nanoclusters
Creators: name: Mahapatra, A. K.
name: Bhatta, U. M.
name: Som, T.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Zn nanoclusters (NCs) are deposited by Low-energy cluster beam deposition technique. The mechanism of oxidation is studied by analysing their compositional and morphological evolution over a long span of time (three years) due to exposure to ambient atmosphere. It is concluded that the mechanism proceeds in two steps. In the first step, the shell of ZnO forms over Zn NCs rapidly up to certain limiting thickness: with in few days -- depending upon the size -- Zn NCs are converted to Zn-ZnO (core-shell), Zn-void-ZnO, or hollow ZnO type NCs. Bigger than ~15 nm become Zn-ZnO (core-shell) type: among them, NCs above ~25 nm could able to retain their initial geometrical shapes (namely triangular, hexagonal, rectangular and rhombohedral), but ~25 to 15 nm size NCs become irregular or distorted geometrical shapes. NCs between ~15 to 5 nm become Zn-void-ZnO type, and smaller than ~5 nm become ZnO hollow sphere type i.e. ZnO hollow NCs. In the second step, all Zn-void-ZnO and Zn-ZnO (core-shell) structures are converted to hollow ZnO NCs in a slow and gradual process, and the mechanism of conversion proceeds through expansion in size by incorporating ZnO monomers inside the shell. The observed oxidation behaviour of NCs is compared with theory of Cabrera - Mott on low-temperature oxidation of metal.
description: 9 pages, 8 figures
Essential self-adjointness for combinatorial Schrödinger operators II- Metrically non complete graphs
Creators: name: De Verdière, Yves Colin
name: Torki-Hamza, Nabila
name: Truc, Francoise
Publisher: name: arXiv
Year: 2010
Subjects: subject: Spectral Theory (math.SP)
subject: FOS: Mathematics

description: We consider weighted graphs, we equip them with a metric structure given by a weighted distance, and we discuss essential self-adjointness for weighted graph Laplacians and Schrödinger operators in the metrically non complete case.
description: Revisited version: Ognjen Milatovic wrote to us that he had discovered a gap in the proof of theorem 4.2 of our paper. As a consequence we propose to make an additional assumption (regularity property of the graph) to this theorem. A new subsection (4.1) is devoted to the study of this property and some details have been changed in the proof of theorem 4.2
Patterns of gender-specializing query reformulation
Creators: name: Raj, Amifa
name: Mitra, Bhaskar
name: Craswell, Nick
name: Ekstrand, Michael D.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Information Retrieval (cs.IR)
subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: Users of search systems often reformulate their queries by adding query terms to reflect their evolving information need or to more precisely express their information need when the system fails to surface relevant content. Analyzing these query reformulations can inform us about both system and user behavior. In this work, we study a special category of query reformulations that involve specifying demographic group attributes, such as gender, as part of the reformulated query (e.g., "olympic 2021 soccer results" to "olympic 2021 women's soccer results"). There are many ways a query, the search results, and a demographic attribute such as gender may relate, leading us to hypothesize different causes for these reformulation patterns, such as under-representation on the original result page or based on the linguistic theory of markedness. This paper reports on an observational study of gender-specializing query reformulations -- their contexts and effects -- as a lens on the relationship between system results and gender, based on large-scale search log data from Bing. We find that these reformulations sometimes correct for and other times reinforce gender representation on the original result page, but typically yield better access to the ultimately-selected results. The prevalence of these reformulations -- and which gender they skew towards -- differ by topical context. However, we do not find evidence that either group under-representation or markedness alone adequately explains these reformulations. We hope that future research will use such reformulations as a probe for deeper investigation into gender (and other demographic) representation on the search result page.
Error propagation analysis of multithreaded programs using likely invariants
Creators: name: Chan, Abraham
Publisher: name: University of British Columbia
Year: 2017

description: Error Propagation Analysis (EPA) is a technique for understanding how errors affect a program’s execution and result in program failures. For this purpose, EPA usually compares the traces of a fault-free (golden) run with those from a faulty run of the program. This makes existing EPA approaches brittle for multithreaded programs, which do not typically have a deterministic golden run. In this thesis, we study the use of likely invariants generated by automated approaches as alternatives for golden run based EPA in multithreaded programs. We present Invariant Propagation Analysis (IPA), an approach and a framework for automatically deriving invariants for multithreaded programs, and using the invariants for EPA.We evaluate the invariants derived by IPA in terms of their coverage for different fault types across six representative programs through fault injection experiments. We find that stable invariants can be inferred in all six programs, although their coverage of faults depends on the application and the fault type.
L- and M-structure in lush spaces
Creators: name: Pipping, Elias
Publisher: name: arXiv
Year: 2010
Subjects: subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 46B20

description: Let $X$ be a Banach space which is lush. It is shown that if a subspace of $X$ is either an L-summand or an M-ideal then it is also lush.
Benchmarking vibrational spectra: 5000 accurate eigenstates of acetonitrile using tree tensor network states
Creators: name: Larsson, Henrik R.
Publisher: name: arXiv
Year: 2025
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: Accurate vibrational spectra are essential for understanding how molecules behave, yet their computation remains challenging and benchmark data to reliably compare different methods are sparse. Here, we present high-accuracy eigenstate computations for the six-atom, 12-dimensional acetonitrile molecule, a prototypical, strongly coupled, anharmonic system. Using a density matrix renormalization group (DMRG) algorithm with a tree-tensor-network-state (TTNS) ansatz, a refinement using TTNSs as basis set, and reliable procedures to estimate energy errors, we compute up to 5,000 vibrational states with error estimates below 0.0007 $\mathrm{cm}^{-1}$. Our analysis reveals that previous works underestimated the energy error by up to two orders of magnitude. Our data serve as a benchmark for future vibrational spectroscopy methods and our new method offers a path toward similarly precise computations of large, complex molecular systems.
Multiplicative zero-one laws and metric number theory
Creators: name: Beresnevich, Victor
name: Haynes, Alan
name: Velani, Sanju
Publisher: name: arXiv
Year: 2010
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics

description: We develop the classical theory of Diophantine approximation without assuming monotonicity or convexity. A complete `multiplicative' zero-one law is established akin to the `simultaneous' zero-one laws of Cassels and Gallagher. As a consequence we are able to establish the analogue of the Duffin-Schaeffer theorem within the multiplicative setup. The key ingredient is the rather simple but nevertheless versatile `cross fibering principle'. In a nutshell it enables us to `lift' zero-one laws to higher dimensions.
description: 13 pages
title: The Asian Infrastructure Investment Bank (AIIB): A Multilateral Bank Where Chi-na Sets the Rules
Creators: name: Horta, Korinna
Publisher: name: Heinrich Böll Foundation in cooperation with urgewald
Year: 2019
Subjects: subject: Economy
subject: Environment
subject: Human Rights

description: In the last years, a number of countries decided to join the Asia Infrastructure Investment Bank (AIIB), which has developed into a major player in the global financial architecture in record time. The AIIB promises to be “lean, clean and green.” The truth seems to be that the AIIB is an instrument with the potential to better advance Chinese interests than pursuing a unilateral course.
Korinna Horta's analysis of the situation regarding the respective standards after three years of AIIB in operation is very sobering. What can be done now? Is it time to admit a complete failure and leave the Bank? What influence do shareholders still exert, and what should they press for?
description: Publication Series on Democracy – Volume 52
Dark energy from the gas of wormholes
Creators: name: Kirillov, A. A.
name: Savelova, E. P.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We assume the space-time foam picture in which the vacuum is filled with a gas of virtual wormholes. It is shown that virtual wormholes form a finite (of the Planckian order) value of the energy density of zero-point fluctuations. However such a huge value is compensated by the contribution of virtual wormholes to the mean curvature and the observed value of the cosmological constant is close to zero. A non-vanishing value appears due to the polarization of vacuum in external classical fields. In the early Universe some virtual wormholes may form actual ones. We show that in the case of actual wormholes vacuum polarization effects are negligible while their contribution to the mean curvature is apt to form the observed dark energy phenomenon. Using the contribution of wormholes to dark matter and dark energy we find estimates for characteristic parameters of the gas of wormholes.
description: minor corrections
Control-value Theory of Achievement Emotions and its Relevance to School Psychology
Creators: Tze, Virginia M. C.
Parker, Patti C.
Sukovieff, Alyse
Publisher: name: University of Alberta Library
Year: 2022

The control-value theory (CVT) of achievement emotions is a well-established theoretical framework which delineates the predictive relationships among distal and proximal antecedents, academic emotions, and student engagement and achievement. Although most research anchored in CVT is conducted by educational psychologists, the theory is arguably applicable to the field of school psychology. In this article, we first provide a brief overview of the theory, with a specific focus on the proximal antecedents (i.e., cognitive appraisals), as well as academic emotions and performance. Given that school psychologists are often consulted with strategies regarding students’ emotional challenges exhibited in the classroom, we then discuss empirical evidence of control- and value-based interventions (e.g., attributional retraining, utility-value), both of which can be posited to address the cognitive appraisals of achievement emotions. Lastly, we discuss the implications of CVT and control- and value-based interventions to school psychologists’ work.
Probing the graphene/substrate interaction by electron tunneling decay
Creators: name: Carnevali, Virginia
name: Sala, Alessandro
name: Biasin, Pietro
name: Panighel, Mirco
name: Comelli, Giovanni
name: Peressi, Maria
name: Africh, Cristina
Publisher: name: arXiv
Year: 2023
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The electronic properties of graphene can be modified by the local interaction with a selected metal substrate. To probe this effect, Scanning Tunneling Microscopy is widely employed, particularly by means of local measurement via lock-in amplifier of the differential conductance and of the field emission resonance. In this article we propose an alternative, reliable method of probing the graphene/substrate interaction that is readily available to any STM apparatus. By testing the tunneling current as function of the tip/sample distance on nanostructured graphene on Ni(100), we demonstrate that I(z) spectroscopy can be quantitatively compared with Density Functional Theory calculations and can be used to assess the nature of the interaction between graphene and substrate. This method can expand the capabilities of standard STM systems to study graphene/substrate complexes, complementing standard topographic probing with spectroscopic information.
Dynamical fluctuations in classical adiabatic processes: General description and their implications
Creators: name: Zhang, Qi
name: Gong, Jiangbin
name: Oh, C. H.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Classical Physics (physics.class-ph)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Dynamical fluctuations in classical adiabatic processes are not considered by the conventional classical adiabatic theorem. In this work a general result is derived to describe the intrinsic dynamical fluctuations in classical adiabatic processes. Interesting implications of our general result are discussed via two subtopics, namely, an intriguing adiabatic geometric phase in a dynamical model with an adiabatically moving fixed-point solution, and the possible "pollution" to Hannay's angle or to other adiabatic phase objects for adiabatic processes involving non-fixed-point solutions.
description: 19 pages, no figures, discussion significantly expanded, published version
Motivation from a Self-Regulated Learning Perspective: Application to School Psychology
Creators: Bakhtiar, Aishah
Hadwin, Allyson F.
Publisher: name: University of Alberta Library
Year: 2022

Self-regulation of learning involves developing metacognitive awareness (planning, monitoring, and evaluating) of (a) cognition—motivational beliefs, (b) behaviours—persistence, effort, engagement, and (c) affect—enjoyment, interest, and other emotions. Metacognitive awareness creates opportunities to exert metacognitive control as needed, which may involve sustaining or manipulating motivational cognition, behaviour, and affect. By adopting a self-regulation perspective, this paper discusses the ways motivation develops within and across academic tasks and situations, as well as the ways learners can be supported to take control of their motivation in those contexts. Applying self-regulation principles in the practice of School Psychology means to consider the role of situation, context, and learners’ socio-historical experiences while empowering learners to focus attention on things they can control.
Yamal 2040 - Working with Scenarios
Creators: name: Gabriel, Johannes
Publisher: name: Zenodo
Year: 2019
Subjects: Scenarios
Strategic foresight
Yamal

description: Content: Part 1: Introduction to strategic foresight and scenarios. Part 2: Process methodology and Intermediate results of the Russia case study under Blue-Actions WP5.

The presentation was given here:

Primakov National Research Institute of World Economy and International Relations (IMEMO)

Center for European Research

Science Seminar

«CHANGING ARCTIC: VISION FOR YAMAL SUSTAINABLE DEVELOPMENT»

15 March 2019, 12.00

IMEMO RAN, Conference Center, 3rd Floor

Moscow, Profsouznaya st., 23
On the continuity and regularity of convex extensions
Creators: name: Bucicovschi, Orest
name: Lebl, Jiri
Publisher: name: arXiv
Year: 2010
Subjects: subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 52A41, 81P68

description: We study continuity and regularity of convex extensions of functions from a compact set $C$ to its convex hull $K$. We show that if $C$ contains the relative boundary of $K$, and $f$ is a continuous convex function on $C$, then $f$ extends to a continuous convex function on $K$ using the standard convex roof construction. In fact, a necessary and sufficient condition for $f$ to extend from any set to a continuous convex function on the convex hull is that $f$ extends to a continuous convex function on the relative boundary of the convex hull. We give examples showing that the hypotheses in the results are necessary. In particular, if $C$ does not contain the entire relative boundary of $K$, then there may not exist any continuous convex extension of $f$. Finally, when the boundary of $K$ and $f$ are $C^1$ we give a necessary and sufficient condition for the convex roof construction to be $C^1$ on all of $K$. We also discuss an application of the convex roof construction in quantum computation.
description: 13 pages, 2 figures; fix typo in proof of Lemma 3.2
Light Nuclei and Isotope Abundances in Cosmic Rays. Results from AMS-01
Creators: name: Tomassetti, N.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Observations of the chemical and isotopic composition of light cosmic-ray nuclei can be used to constrain the astrophysical models of cosmic-ray transport and interactions in the Galaxy. Nearly 200,000 light nuclei (Z>2) have been observed by AMS-01 during the 10-day flight STS-91 in June 1998. Using these data, we have measured the relative abundance of light nuclei Li, Be, B and C in the kinetic energy range 0.35 - 45 GeV/nucleon.
description: 6 pages, 3 figures. Proceedings of the ICATPP 2010 - Como, Italy
Existence and compactness of conformal metrics on the plane with unbounded and sign-changing Gaussian curvature
Creators: name: Bernardini, Chiara
Publisher: name: arXiv
Year: 2023
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35J60, 35J15

description: We show that the prescribed Gaussian curvature equation in $\mathbb{R}^2$ $$-Δu= (1-|x|^p) e^{2u},$$ has solutions with prescribed total curvature equal to $Λ:=\int_{\mathbb{R}^2}(1-|x|^p)e^{2u}dx\in \mathbb{R}$, if and only if $$p\in(0,2) \qquad \text{and} \qquad (2+p)π\leΛ<4π$$ and prove that such solutions remain compact as $Λ\to\barΛ\in[(2+p)π,4π)$, while they produce a spherical blow-up as $Λ\uparrow4π$.
The co-Hopfian property of surface braid groups
Creators: name: Kida, Yoshikata
name: Yamagata, Saeko
Publisher: name: arXiv
Year: 2010
Subjects: subject: Group Theory (math.GR)
subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 20E36, 20F36

description: Let g and n be integers at least two, and let G be the pure braid group with n strands on a closed orientable surface of genus g. We describe any injective homomorphism from a finite index subgroup of G into G. As a consequence, we show that any finite index subgroup of G is co-Hopfian.
description: 32 pages, 20 figures. Figures added and exposition improved
Local Consistency of Markov Chain Monte Carlo Methods
Creators: name: Kamatani, Kengo
Publisher: name: arXiv
Year: 2010
Subjects: subject: Methodology (stat.ME)
subject: Statistics Theory (math.ST)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: In this paper, we introduce the notion of efficiency (consistency) and examine some asymptotic properties of Markov chain Monte Carlo methods. We apply these results to the data augmentation (DA) procedure for independent and identically distributed observations. More precisely, we show that if both the sample size and the running time of the DA procedure tend to infinity the empirical distribution of the DA procedure tends to the posterior distribution. This is a local property of the DA procedure, which may be, in some cases, more helpful than the global properties to describe its behavior. The advantages of using the local properties are the simplicity and the generality of the results. The local properties provide useful insight into the problem of how to construct efficient algorithms.
description: 12 pages
Effects of gonadectomy and inhibition of of androgen synthesis on behavioural flexibility in male rats
Creators: name: Tomm, Ryan Justin
Publisher: name: University of British Columbia
Year: 2017

description: Androgens regulate sexual and aggressive behaviour in males. However, little attention has focused on the effects of androgens on executive function. Androgens are produced in the gonads but are also produced in the brain, which might be important when systemic androgen levels are low. Here, we examined the effects of gonadectomy (GDX) and/or an androgen synthesis inhibitor (abiraterone acetate, ABI) on different forms of behavioural flexibility in adult male Long-Evans rats. Rats received either GDX or Sham surgeries and then were housed for 5 weeks, to allow for upregulation of local androgen synthesis after GDX. Five days prior to the commencement of behavioural training, rats received daily treatments of either Vehicle or ABI (40 mg/kg, p.o.), an androgen synthesis inhibitor that crosses the blood-brain barrier. Behavioural flexibility was assessed on an operant based strategy set-shifting task or a spatial reversal learning task. The strategy set-shifting task required rats to disengage from a previously correct (but now incorrect) visual-cue based discrimination strategy, and acquire and maintain a new egocentric spatial response strategy. During the set-shift to an egocentric response strategy, ABI treatment (but not GDX) caused an improvement in behavioural flexibility, by reducing the number of errors made before reaching criterion. In a separate group of rats trained on a reversal learning task, we found a similar effect, in that only ABI reduced perseverative-type errors during the reversal. During the set-shift and the response reversal, there were no effects of GDX, suggesting that GDX+Vehicle subjects maintain or upregulate neural androgen synthesis to maintain baseline flexibility. Using liquid chromatography tandem mass spectrometry, we measured testosterone (T) in the medial prefrontal cortex (mPFC) and the dorsomedial striatum (DMS). Neural T was only detectable in the Sham+Vehicle rats, suggesting that GDX+Vehicle rats may have neural T synthesis occurring in other brain regions important for behavioural flexibility. Taken together, these data suggest that neural T synthesis may serve to increase persistence of behaviour, which can in some instances suppress behavioural flexibility.
MPEC 2023-J01 : 2023 HH7
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2023 HH7

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Rarita-Schwinger Type Operators on Spheres and Real Projective Space
Creators: name: Li, Junxia
name: Ryan, John
name: Vanegas, Carmen J.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Complex Variables (math.CV)
subject: FOS: Mathematics

description: In this paper we deal with Rarita-Schwinger type operators on spheres and real projective space. First we define the spherical Rarita-Schwinger type operators and construct their fundamental solutions. Then we establish that the projection operators appearing in the spherical Rarita-Schwinger type operators and the spherical Rarita-Schwinger type equations are conformally invariant under the Cayley transformation. Further, we obtain some basic integral formulas related to the spherical Rarita-Schwinger type operators. Second, we define the Rarita-Schwinger type operators on the real projective space and construct their kernels and Cauchy integral formulas.
description: 21 pages. arXiv admin note: text overlap with arXiv:1106.3588
Multi-specialization and multi-asymptotic expansions
Creators: name: Honda, Naofumi
name: Prelli, Luca
Publisher: name: arXiv
Year: 2010
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics

description: In this paper we extend the notion of specialization functor to the case of several closed submanifolds satisfying some suitable conditions. Applying this functor to the sheaf of Whitney holomorphic functions we construct different kinds of sheaves of multi-asymptotically developable functions, whose definitions are natural extensions of the definition of strongly asymptotically developable functions introduced by Majima.
description: 91 pages, uses xy-pic, revised version
Where to now? : First Nation-led research, self-determination, and the role of the settler state in British Columbia
Creators: name: Zabawa, Zachary Adam
Publisher: name: University of British Columbia
Year: 2017

description: Following the Calder Decision in 1970, subsequent legal rulings in Canada have defined the government’s duty to recognize First Nations’ pre-existing rights to their Traditional Territory, undermining the racist discovery doctrine and terra nullius arguments of the Crown’s claim to radical title to the Province of British Columbia. In doing so, the courts have declared the importance of First Nation historical research, specifically Oral History evidence, in demonstrating Aboriginal Rights and Title. With this, an industry of consultants and academics has arisen to aid in the collection of place-based Traditional Knowledge held and protected by community members. Employing scientific rigor and GIS, various studies documenting land use, occupancy, and Traditional Knowledge have proven to be effective means of resistance for First Nations by securing vital concessions of revenue and management authority from the Province. Yet, these studies are vulnerable to reproducing essentialist images of First Nation culture and have limited utility on their own in Aboriginal Title litigation. This thesis seeks to demonstrate how recent legal accommodations by the Canadian Courts and secure Web 2.0 technologies open space for the deployment of First Nation-led participatory research for both Aboriginal Title litigation and cultural revitalization efforts. The need for this research was identified via a community-based research approach focusing on experiential learning and dialogue with Elders from two communities of the St‘át‘imc Nation and interviews with experts in the field. The application of community-led participatory research more directly addresses the barriers to research and compromises in representation made for efficacy of the current research paradigm. By allowing for the production of research outputs that expand the reach of community voices to promote understanding and empathy in their own communities and settler society, community-led participatory research can ultimately result in greater space for First Nation self-definition and determination. Therefore, First Nation research strategies should supplement quantitative land use studies with long-term participatory research projects more appropriate for addressing the dualism of First Nation Self-determination - external decolonization and internal cultural revitalization.
Vertex Cover Kernelization Revisited: Upper and Lower Bounds for a Refined Parameter
Creators: name: Jansen, Bart M. P.
name: Bodlaender, Hans L.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Data Structures and Algorithms (cs.DS)
subject: Computational Complexity (cs.CC)
subject: FOS: Computer and information sciences
subject: F.2.2

description: An important result in the study of polynomial-time preprocessing shows that there is an algorithm which given an instance (G,k) of Vertex Cover outputs an equivalent instance (G',k') in polynomial time with the guarantee that G' has at most 2k' vertices (and thus O((k')^2) edges) with k' <= k. Using the terminology of parameterized complexity we say that k-Vertex Cover has a kernel with 2k vertices. There is complexity-theoretic evidence that both 2k vertices and Theta(k^2) edges are optimal for the kernel size. In this paper we consider the Vertex Cover problem with a different parameter, the size fvs(G) of a minimum feedback vertex set for G. This refined parameter is structurally smaller than the parameter k associated to the vertex covering number vc(G) since fvs(G) <= vc(G) and the difference can be arbitrarily large. We give a kernel for Vertex Cover with a number of vertices that is cubic in fvs(G): an instance (G,X,k) of Vertex Cover, where X is a feedback vertex set for G, can be transformed in polynomial time into an equivalent instance (G',X',k') such that |V(G')| <= 2k and |V(G')| <= O(|X'|^3). A similar result holds when the feedback vertex set X is not given along with the input. In sharp contrast we show that the Weighted Vertex Cover problem does not have a polynomial kernel when parameterized by the cardinality of a given vertex cover of the graph unless NP is in coNP/poly and the polynomial hierarchy collapses to the third level.
description: Published in "Theory of Computing Systems" as an Open Access publication
MPEC 2023-J02 : 2023 HJ7
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2023 HJ7

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Exact and high order discretization schemes for Wishart processes and their affine extensions
Creators: name: Ahdida, Abdelkoddousse
name: Alfonsi, Aurélien
Publisher: name: arXiv
Year: 2010
Subjects: subject: Probability (math.PR)
subject: Computational Finance (q-fin.CP)
subject: FOS: Mathematics
subject: FOS: Economics and business

description: This work deals with the simulation of Wishart processes and affine diffusions on positive semidefinite matrices. To do so, we focus on the splitting of the infinitesimal generator, in order to use composition techniques as Ninomiya and Victoir or Alfonsi. Doing so, we have found a remarkable splitting for Wishart processes that enables us to sample exactly Wishart distributions, without any restriction on the parameters. It is related but extends existing exact simulation methods based on Bartlett's decomposition. Moreover, we can construct high-order discretization schemes for Wishart processes and second-order schemes for general affine diffusions. These schemes are in practice faster than the exact simulation to sample entire paths. Numerical results on their convergence are given.
Non-genetic risk factors for keratoconus
Creators: name: Song, Minji
name: Fang, Qing Yi
name: Seth, Ishith
name: Baird, Paul N
name: Daniell, Mark D
name: Sahebjada, Srujana
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Medicine
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Developmental Biology
subject: Science Policy

description: Keratoconus is a complex and multifactorial disease and its exact aetiology remains unknown. This current study examined the important environmental risk factors and their association with keratoconus. This study was registered in the PROSPERO International Prospective Register of systematic reviews under registration number CRD42021256792 in 2021. Scopus, Web of Science, PubMed, and Cochrane CENTRAL databases were searched for all relevant articles published from 1 January 1900 to 31 July 2021. National Institutes of Health Quality Assessment Tool was used to assess the methodological quality of the studies. The assessment for statistical heterogeneity was assessed using the Z-statistics on RevMan v5.4. P-value of <0.05 was considered as statistically significant and I2 < 25% as homogenous. Thirty studies were included in this meta-analysis. Pooled odds ratio was calculated with 95% CI. The pooled odds ratio (OR) of eye rubbing, atopy, asthma, and eczema was 3.64 (95% CI, 2.02, 6.57), 1.90 (95% CI, 1.22, 2.94), 1.36 (95% CI, 1.15, 1.61) and 1.90 (95% CI, 1.22, 2.94), respectively. The OR for diabetes was 0.86 (95% CI 0.73, 1.02), and use of sunglasses, contact lens, allergic conjunctivitis, side sleep position and prone sleep position was 0.40 (95% CI, 0.16, 0.99), 1.68 (0.70, 4.00), 2.24 (95% CI, 0.68, 7.36), 3.81 (95% CI, 0.31, 46.23), 12.76 (95% CI, 0.27, 598.58), respectively. Twenty studies were considered to be of high quality, nine to be moderate and one to be low. Environmental risk factors have been identified to play a role in the susceptibility of keratoconus. However, further large-scale longitudinal studies are needed to understand the mechanisms between environmental risk factors and keratoconus.
Виды дефектов и оценка ущерба от отказов турбогенераторов на блоках станций
Creators: name: Владимировна, Шевченко Валентина
Publisher: name: Zenodo
Year: 2019
Subjects: турбогенераторы
ТГ
эксплуатация электрооборудования
износ ТГ
разрушение ТГ

description: На русском: [Шевченко В.В. Виды дефектов и оценка ущерба от отказов турбогенераторов на блоках станций // Тезисы докладов 2-й всеукраинской научно-практической конференции молодых ученых, специалистов, аспирантов "Проблемы энергоресурсозбереження в промышленном регионе. Наука и практика" (11-12 мая 2016 года, город Мариуполь), секция 1 "Энергосбережение в электротехнических комплексах, сетях и системах". – Украина, Мариуполь: ГВУЗ "Приазовский государственный технический университет", 2016. – С. 38-39. https://doi.org/10.5281/zenodo.2596623]

Ключевые слова: турбогенераторы (ТГ), эксплуатация электрооборудования, износ ТГ, разрушение ТГ.

Репозиторий НТУ "ХПИ" - открыть pdf.

Репозиторий Приазовского ГТУ - открыть pdf. Весь сборник

На CORE - открыть pdf.