cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Investigations in Possibilistic Reasoning and Multi-Context Systems
Creators: name: Jin, Yifan
Publisher: name: Griffith University
Year: 2017
Subjects: subject: Possibilistic logic
subject: Knowledge representation
subject: Knowledge base

description: Many formalisms with various expressive power and reasoning properties have been proposed in knowledge representation (KR). Possibilistic logic is a weighted logic for dealing with incomplete and uncertain information by assigning weights to propositional formulas. A possibilistic knowledge base (KB) is a finite set of such formulas. The importance of incorporating possibilistic reasoning has been recognised by some researchers. However, some issues are still unsolved yet: (1) While possibilistic answer set programming (PASP) provides an elegant framework for combining possibilistic logic and answer set programming (ASP), PASP is unable to reason with inconsistent possibilistic logic programs; (2) The problem of revising a possibilistic KB by a possibilistic formula has been studied by several researchers. However, existing approaches to possibilistic revision suffer from the so-called drowning effect. Moreover, revisions by certain and uncertain formulas are handled separately and most revision operators are defined only for certain inputs; (3) Multi-context systems (MCSs) provide a unifying framework for representing distributed and heterogeneous information sources in an integrated way. An MCS is a set of component KR systems called contexts, which are interconnected via so-called bridge rules. It is still unclear how to incorporate possibilistic reasoning in MCSs. Besides, while MCSs address the heterogeneity of knowledge formalisms in an elegant theoretical manner, research on distributed and parallel reasoning systems for MCSs is still in its early development. Thus a more efficient reasoning framework is needed.
Flat Surface State with Octupole Moment in an $e_g$ Orbital System on a Simple Cubic Lattice
Creators: name: Kubo, Katsunori
Publisher: name: arXiv
Year: 2024
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: A tight-binding model for $e_g$ orbitals on a simple cubic lattice with finite thickness is investigated. The hopping integrals for nearest-neighboring sites are considered. We examine the electronic band structures for systems with (001), (110), and (111) surfaces. Electronic states well localized around the surfaces are found for the (110) and (111) surfaces. In particular, the surface state is flat and extends in the entire Brillouin zone for the (111) surface, provided the bulk band projected onto the surface Brillouin zone is gapped. We also find that these surface states possess octupole moments in both the (110) and (111) surface cases.
description: 7 pages, 11 figures
Effects of Parental or Caregiver Death Prior to Age Eighteen on Depressive Symptoms and Grief Following Miscarriage
Creators: Iyer-Kothari, Anitha
Publisher: name: Columbia University
Year: 2011
Subjects: subject: Clinical psychology
subject: Counseling psychology
subject: Psychology
subject: FOS: Psychology

description: Parental or caregiver death, especially in childhood, can have long lasting emotional ramifications in an individual's life. When this early loss is followed by significant life events such as pregnancy, and losses such as miscarriage, the bereaved woman experiences considerable emotional impact. The present study explores the relationship between parental or caregiver death and miscarriage on depressive symptoms and grief. Specifically, the study examines whether a history of parental or caregiver death affects depressive symptoms and grief following miscarriage such that miscarrying women with parental or caregiver death have higher levels of depressive symptoms and grief than their counterparts who have not experienced parental or caregiver death. The study further examines whether the difference in the level of depressive symptoms between miscarrying women with and without a history of parental or caregiver death is greater than the difference in the level of depressive symptoms between pregnant and non-pregnant/community women with and without a history of parental or caregiver death. Results indicate that miscarrying women who have suffered parental or caregiver death experience more depressive symptoms than miscarrying women who have not suffered parental or caregiver death; pregnant women who have suffered parental or caregiver death prior to age eighteen experience more depressive symptoms than pregnant women who have not suffered parental or caregiver death prior to age eighteen. However, the difference in the level of depressive symptoms in miscarrying women with and without as history of parental or caregiver death is not greater than the difference in the level of depressive symptoms in pregnant and non-pregnant/community women with and without a history of parental or caregiver death. No association was found between parental or caregiver death and grief in miscarrying women. Results are discussed in the context of psychodynamic, relational, and attachment-based explanatory models.
Untitled Item
Creators: name: Καραμάνου, Ασπασία
name: Sarli, Ioanna
name: Tsoupra, Ioanna
Publisher: name: figshare
Year: 2019
Subjects: subject: 130205 Humanities and Social Sciences Curriculum and Pedagogy (excl. Economics, Business and Management)
subject: FOS: Educational sciences
subject: 50205 Environmental Management
subject: FOS: Earth and related environmental sciences
subject: 150305 Human Resources Management
subject: FOS: Economics and business
subject: 130304 Educational Administration, Management and Leadership

description: Στην εργασία μελετήθηκε η άσκηση της ηγεσίας ως μια έννοια με καθολική εφαρμογή και ίσως η πιο σημαντική παράμετρος που επηρεάζει την αποδοτικότητα στην διαχείριση μιας φυσικής καταστροφής μέσω των οργανωμένων Συστημάτων Πολιτικής Προστασίας. Αξιολογήθηκαν οι θεωρητικές προσεγγίσεις περί ηγεσίας και εξετάστηκε η εφαρμογή διαφόρων μοντέλων στους διαχειριστές έκτακτης ανάγκης, οι οποίοι υποπίπτουν συχνά σε σφάλματα στη διαδικασία λήψης αποφάσεων, λαμβάνοντας μη ποιοτικές ή μη αποδεκτές αποφάσεις.Από τα ευρήματα της εργασίας καταδεικνύεται ότι απαιτείται η κατάλληλη επιλογή και προσαρμογή των πορισμάτων της διοικητικής επιστήμης στην πρακτική αξιοποίηση των ιδιαίτερων συνθηκών που δημιουργούνται κατά τη διάρκεια μιας κρίσης και όχι η δογματική υιοθέτηση των θεωρητικών προσεγγίσεων και η άκριτη μεταφορά τους.
Late time evolution of negatively curved FLRW models
Creators: name: Giambò, Roberto
name: Miritzis, John
name: Pezzola, Annagiulia
Publisher: name: arXiv
Year: 2019
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study the late time evolution of negatively curved Friedmann--Le\-ma\^ıtre--Robert\-son--Walker (FLRW) models with a perfect fluid matter source and a scalar field nonminimally coupled to matter. Since, under mild assumptions on the potential $V$, it is already known that equilibria corresponding to non-negative local minima for $V$ are asymptotically stable, we classify all cases where one of the energy components eventually dominates. In particular for nondegenerate minima with zero critical value, we rigorously prove that if $γ$, the parameter of the equation of state is larger than $2/3$, then there is a transfer of energy from the fluid and the scalar field to the energy density of the scalar curvature. Thus, the scalar curvature, if present, has a dominant effect on the late evolution of the universe and eventually dominates over both the perfect fluid and the scalar field. The analysis in complemented with the case where $V$ is exponential and therefore the scalar field diverges to infinity.
description: accepted version for publication
title: Preliminary note on project "Y" low speed tunnel tests
Creators: name: Earl, T. D.
Publisher: name: A.V. Roe Canada Limited
Year: 1953
Subjects: subject: Avro Arrow
subject: Avro Arrow
subject: Avro Canada
subject: A.V. Roe Canada
subject: Avro Canada CF-105 Arrow
subject: CF-105
subject: Canada supersonic jet
subject: avion à réaction supersonique du Canada
subject: delta-winged supersonic interceptor
subject: intercepteur supersonique à ailes delta

description: Distributed online by the National Research Council of Canada
description: Distribué en ligne par le Conseil national de recherches du Canada
All two dimensional links are null homotopic
Creators: name: Bartels, Arthur
name: Teichner, Peter
Publisher: name: arXiv
Year: 2000
Subjects: subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 57Q45, 57Q60

description: We show that any number of disjointly embedded 2-spheres in 4-space can be pulled apart by a link homotopy, ie, by a motion in which the 2-spheres stay disjoint but are allowed to self-intersect.
description: 18 pages. Published copy, also available at http://www.maths.warwick.ac.uk/gt/GTVol3/paper10.abs.html
Policy Optimization with Stochastic Mirror Descent
Creators: name: Yang, Long
name: Zhang, Yu
name: Zheng, Gang
name: Zheng, Qian
name: Li, Pengfei
name: Huang, Jianhang
name: Wen, Jun
name: Pan, Gang
Publisher: name: arXiv
Year: 2019
Subjects: subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: Improving sample efficiency has been a longstanding goal in reinforcement learning. This paper proposes $\mathtt{VRMPO}$ algorithm: a sample efficient policy gradient method with stochastic mirror descent. In $\mathtt{VRMPO}$, a novel variance-reduced policy gradient estimator is presented to improve sample efficiency. We prove that the proposed $\mathtt{VRMPO}$ needs only $\mathcal{O}(ε^{-3})$ sample trajectories to achieve an $ε$-approximate first-order stationary point, which matches the best sample complexity for policy optimization. The extensive experimental results demonstrate that $\mathtt{VRMPO}$ outperforms the state-of-the-art policy gradient methods in various settings.
MOESM2 of Effectiveness of antimicrobial-coated central venous catheters for preventing catheter-related blood-stream infections with the implementation of bundles: a systematic review and network meta-analysis
Creators: name: Wang, Hongliang
name: Tong, Hongshuang
name: Liu, Haitao
name: Wang, Yao
name: Wang, Ruitao
name: Gao, Hong
name: Yu, Pulin
name: Lv, Yanji
name: Chen, Shuangshuang
name: Wang, Guiyue
name: Liu, Miao
name: Li, Yuhang
name: Yu, Kaijiang
name: Wang, Changsong
Publisher: name: figshare
Year: 2018
Subjects: subject: Medicine
subject: Biological Sciences not elsewhere classified
subject: Information Systems not elsewhere classified
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Computational Biology

description: Additional file 2. Random sequence generation of the included trials.
Effects of Pre-reading Instructions on the Comprehension of Science Texts
Creators: Lyons, Yuna H.
Publisher: name: Columbia University
Year: 2017
Subjects: Science--Study and teaching (Middle school)
Reading comprehension

description: This study examined how three different pre-reading (or relevance) instructions led to different learning outcomes for middle school students reading science texts on the topic of sweetness.  The first was a generic instruction to read for understanding.  The second prompted students to form a holistic explanation of the topic of sweetness, and the third instruction prompted students to focus on the core scientific principle of the relationship between structure and function.  The latter two were specifically designed to align with science disciplinary goals.  A comparison of the three treatments found that the generic instruction and the structure-function instruction led to better learning outcomes, measured by recall, short-answer performance questions, and a traditional multiple-choice/short-answer assessment.  A qualitative analysis of the data also revealed some small yet notable differences in the recall pattern of students, such as an increased recall of key ideas for the structure-function instruction. This effect was seen predominantly for higher-skilled readers.  The results suggest the possibility that relevance instructions targeting core ideas may help to orient students to the key ideas and explanations in scientific text, especially for higher-skilled readers, and indirectly highlights some of the challenges for students with less reading competencies.  Overall, this study provides greater insight into how middle-school students read science texts, the effectiveness of instructor-provided relevance instructions in promoting (higher-level) comprehension of science texts, and implications for teachers on how to use texts in science instruction.
Η άσκηση της ηγεσίας στη διαχείριση μιας έκτακτης κατάστασης ανάγκης
Creators: name: Καραμάνου, Ασπασία
name: Sarli, Ioanna
name: Tsoupra, Ioanna
Publisher: name: figshare
Year: 2019
Subjects: subject: 130205 Humanities and Social Sciences Curriculum and Pedagogy (excl. Economics, Business and Management)
subject: FOS: Educational sciences
subject: 50205 Environmental Management
subject: FOS: Earth and related environmental sciences
subject: 150305 Human Resources Management
subject: FOS: Economics and business
subject: 130304 Educational Administration, Management and Leadership

description: Στην εργασία μελετήθηκε η άσκηση της ηγεσίας ως μια έννοια με καθολική εφαρμογή και ίσως η πιο σημαντική παράμετρος που επηρεάζει την αποδοτικότητα στην διαχείριση μιας φυσικής καταστροφής μέσω των οργανωμένων Συστημάτων Πολιτικής Προστασίας. Αξιολογήθηκαν οι θεωρητικές προσεγγίσεις περί ηγεσίας και εξετάστηκε η εφαρμογή διαφόρων μοντέλων στους διαχειριστές έκτακτης ανάγκης, οι οποίοι υποπίπτουν συχνά σε σφάλματα στη διαδικασία λήψης αποφάσεων, λαμβάνοντας μη ποιοτικές ή μη αποδεκτές αποφάσεις.Από τα ευρήματα της εργασίας καταδεικνύεται ότι απαιτείται η κατάλληλη επιλογή και προσαρμογή των πορισμάτων της διοικητικής επιστήμης στην πρακτική αξιοποίηση των ιδιαίτερων συνθηκών που δημιουργούνται κατά τη διάρκεια μιας κρίσης και όχι η δογματική υιοθέτηση των θεωρητικών προσεγγίσεων και η άκριτη μεταφορά τους.
SPHINCS$^+$ post-quantum digital signature scheme with Streebog hash function
Creators: name: Kiktenko, E. O.
name: Bulychev, A. A.
name: Karagodin, P. A.
name: Pozhar, N. O.
name: Anufriev, M. N.
name: Fedorov, A. K.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: Many commonly used public key cryptosystems will become insecure once a scalable quantum computer is built. New cryptographic schemes that can guarantee protection against attacks with quantum computers, so-called post-quantum algorithms, have emerged in recent decades. One of the most promising candidates for a post-quantum signature scheme is SPHINCS$^+$, which is based on cryptographic hash functions. In this contribution, we analyze the use of the new Russian standardized hash function, known as Streebog, for the implementation of the SPHINCS$^+$ signature scheme. We provide a performance comparison with SHA-256-based instantiation and give benchmarks for various sets of parameters.
description: 5 pages, 2 figures, 3 tables
Exploring the Expansion History of the Universe
Creators: name: Linder, Eric V.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Exploring the recent expansion history of the universe promises insights into the cosmological model, the nature of dark energy, and potentially clues to high energy physics theories and gravitation. We examine the extent to which precision distance-redshift observations can map out the history, including the acceleration-deceleration transition, and the components and equations of state of the energy density. We consider the ability to distinguish between various dynamical scalar field models for the dark energy, as well as higher dimension and alternate gravity theories. Finally, we present a new, advantageous parametrization for the study of dark energy.
description: 4 pages, 3 figures, submitted to Phys. Rev. Letters
title: Microplastic pollution in urban wetlands and associated effects on wetland biota
Creators: name: Lu, Hsuan-Cheng
Publisher: name: Griffith University
Year: 2023
Subjects: subject: microplastics
subject: constructed wetland
subject: ecotoxicology
subject: metabolomics

description: Plastic debris has become a global environmental issue. Among the various sizes of plastic debris, microplastics (plastic particles less than 5 mm) have attracted enormous attention due to their small size and ubiquitous presence in aquatic systems worldwide. Wastewater treatment plant effluent and stormwater runoff have been identified as the main pathways of microplastics to aquatic environments. Constructed wetlands, which are used as treatment systems for wastewater and stormwater, may play a significant role in reducing the release of microplastics to receiving environments, but they are relatively understudied compared to other freshwater compartments given their functions and ecological relevance. Additionally, ingestion of microplastics has been documented in a range of non-target organisms and subsequent adverse effects have been reported, but exposure conditions have often not been environmentally realistic. The overall aim of this thesis was to 1) highlight current knowledge gaps by summarising the current state of knowledge of microplastic research in freshwater environments, 2) investigate the extent of microplastic contamination in constructed wetlands to better understand the potential role of these artificial systems in managing microplastic contamination, and 3) evaluate the effects of microplastics on common Australian freshwater organisms under environmentally relevant conditions. [...]
The Complete Hyperbolicity of Cylindric Billiards
Creators: name: Simanyi, Nandor
Publisher: name: arXiv
Year: 1999
Subjects: subject: Dynamical Systems (math.DS)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 70F10, 58F15

description: The connected configuration space of a so called cylindric billiard system is a flat torus minus finitely many spherical cylinders. The dynamical system describes the uniform motion of a point particle in this configuration space with specular reflections at the boundaries of the removed cylinders. It is proven here that under a certain geometric condition --- slightly stronger than the necessary condition presented in [S-Sz(1998)] --- a cylindric billiard flow is completely hyperbolic. As a consequence, every hard ball system is completely hyperbolic --- a result strengthening the theorem of [S-Sz(1999)].
description: 22 pages
title: Project "Y": preliminary programme and data for low-speed wind tunnel tests
Creators: name: A.V. Roe Canada Limited
Publisher: name: A.V. Roe Canada Limited
Year: 1952
Subjects: subject: Avro Arrow
subject: Avro Arrow
subject: Avro Canada
subject: A.V. Roe Canada
subject: Avro Canada CF-105 Arrow
subject: CF-105
subject: Canada supersonic jet
subject: avion à réaction supersonique du Canada
subject: delta-winged supersonic interceptor
subject: intercepteur supersonique à ailes delta

description: Distributed online by the National Research Council of Canada
description: Distribué en ligne par le Conseil national de recherches du Canada
On the variation of the Poisson structures of certain moduli spaces
Creators: name: Huebschmann, Johannes
Publisher: name: arXiv
Year: 1997
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics

description: Given a Lie group G whose Lie algebra is endowed with a nondegenerate invariant symmetric bilinear form, we construct a Poisson algebra of continuous functions on a certain open subspace R of the space of representations in G of the fundamental group of a compact connected orientable topological surface with finitely many boundary circles; when G is compact and connected, R may be taken dense in the space of all representations. The space R contains spaces of representations where the values of those generators of the fundamental group which correspond to the boundary circles are constrained to lie in fixed conjugacy classes and, on these representation spaces, the Poisson algebra restricts to stratified symplectic Poisson algebras constructed elsewhere earlier. Hence the Poisson algebra on R gives a description of the variation of the stratified symplectic Poisson structures on the smaller representation spaces as the chosen conjugacy classes move.
description: AMSTeX 2.1, 24 pages
title: Die Rhetorik der Exklusion
title: zum Zusammenhang von Exklusionsthematik und Sozialtheorie
titleType: Subtitle
Creators: name: Farzin, Sina
Publisher: name: Freie Universität Berlin
Year: 2011
Subjects: subject: 300 Sozialwissenschaften::300 Sozialwissenschaften, Soziologie

description: Längst haben sich Bilder und Darstellungen der so genannten ›neuen Unterschicht‹, der Marginalisierten und Exkludierten durch ihre Dauerpräsenz in Medien, politischen und auch wissenschaftlichen Diskursen zu unhinterfragten Stereotypen verdichtet. Ungeachtet des immensen Dramatisierungs- und Politisierungspotentials der Exklusionsthematik ist es bisher jedoch nicht gelungen, einen theoretisch konsistenten Begriff der Exklusion zu entwickeln, geschweige denn zu etablieren. Dieses Defizit wird in diesem Buch zum Anlass genommen, den Blick auf die theoretischen Spannungen zu richten, die in der Exklusionsthematik sichtbar werden. Denn in der Auseinandersetzung mit dem exkludierten Anderen wird die zumeist implizite Begrenztheit der jeweiligen Vorstellung des Sozialen, der Gesellschaft oder des theoretischen ›Innen‹ sichtbar. Über eine rhetorische Analyse wird in drei Fallstudien zur Systemtheorie Niklas Luhmanns, zur Diskurstheorie Michel Foucaults sowie zur Theorie sozialer Felder Pierre Bourdieus gezeigt, dass gerade an dieser Grenze des Sozialen der Bereich des theoretisch abgesicherten Sprechens verlassen wird. An seine Stelle tritt eine Sprache, die von der literarischen Verdichtung rhetorischer Figuren wie Metaphern, Beispielen und Evidenz bestimmt ist und so zugleich den impliziten Verweis auf eine andere Wissensordnung als die der Wissenschaft in die Theorien trägt.
title: Herewith attached is reconnaissance Arrow drag and power: summary
Creators: name: Kuzyk, W.
Publisher: name: Avro Aircraft Limited (Canada)
Year: 1957
Subjects: subject: Avro Arrow
subject: Avro Arrow
subject: Avro Canada
subject: A.V. Roe Canada
subject: Avro Canada CF-105 Arrow
subject: CF-105
subject: Canada supersonic jet
subject: avion à réaction supersonique du Canada
subject: delta-winged supersonic interceptor
subject: intercepteur supersonique à ailes delta

description: Publisher is assumed to be "Avro Aircraft Limited (Canada)" by the National Research Council of Canada.
description: L'éditeur est présumé d'être « Avro Aircraft Limited (Canada) » par le Conseil national de recherches du Canada.
description: Distributed online by the National Research Council of Canada
description: Distribué en ligne par le Conseil national de recherches du Canada
title: Preliminary brochure: proposed long-range all weather fighter
Creators: name: A.V. Roe Canada Limited
Publisher: name: A.V. Roe Canada Limited
Year: 1949
Subjects: subject: Avro Arrow
subject: Avro Arrow
subject: Avro Canada
subject: A.V. Roe Canada
subject: Avro Canada CF-105 Arrow
subject: CF-105
subject: Canada supersonic jet
subject: avion à réaction supersonique du Canada
subject: delta-winged supersonic interceptor
subject: intercepteur supersonique à ailes delta

description: Distributed online by the National Research Council of Canada
description: Distribué en ligne par le Conseil national de recherches du Canada
A Priori Knowledge-Incorporating Method for the Determination of Polycyclic Aromatic Hydrocarbons (PAHs) in Edible Vegetable Oils by Time Resolved Fluorescence
Creators: name: Chen, Hui
name: Feng, Meiqin
name: Li, Jing
name: Lu, Jie
name: Gu, Haiyang
name: Chen, Junhong
name: He, Shihang
name: Qi, Xingpu
name: Chen, Wenjun
name: Chen, Tong
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biochemistry
subject: Molecular Biology
subject: Biotechnology
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: FOS: Biological sciences
subject: Inorganic Chemistry
subject: FOS: Chemical sciences
subject: Plant Biology

description: A priori knowledge-incorporating method based on time resolved fluorescence was successfully developed for the determination of polycyclic aromatic hydrocarbons in edible vegetable oils. Specifically, fluorescence decay functions of polycyclic aromatic hydrocarbons at characteristic emission wavelengths were used as the priori models and incorporated into the deep-autoencoder. The priori model-incorporating deep-autoencoder models were shown to be effective for the determination of polycyclic aromatic hydrocarbons in edible vegetable oils and root-mean-square errors of prediction lower than 2% were achieved. The influence of analyte, matrix and proportion of priori model were characterized. Increasing the proportion of priori model appropriately was beneficial to the performance of models and 16% was shown to be the best incorporated proportion.
Optimized Perturbation Theory for Wave Functions of Quantum Systems
Creators: name: Hatsuda, T.
name: Kunihiro, T.
name: Tanaka, T.
Publisher: name: arXiv
Year: 1996
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Functional Analysis (math.FA)
subject: Mathematical Physics (math-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: The notion of the optimized perturbation, which has been successfully applied to energy eigenvalues, is generalized to treat wave functions of quantum systems. The key ingredient is to construct an envelope of a set of perturbative wave functions. This leads to a condition similar to that obtained from the principle of minimal sensitivity. Applications of the method to quantum anharmonic oscillator and the double well potential show that uniformly valid wave functions with correct asymptotic behavior are obtained in the first-order optimized perturbation even for strong couplings.
description: 11 pages, RevTeX, three ps figures
On the validity of Strong Cosmic Censorship Conjecture in presence of Dirac fields
Creators: name: Rahman, Mostafizur
Publisher: name: arXiv
Year: 2019
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: A well posed theory of nature is expected to determine the future of an observer uniquely from a given set of appropriate initial data. In the context of general relativity, this is ensured by Penrose's strong cosmic censorship conjecture. But in recent years, several examples are found which suggest breakdown of the deterministic nature of the theory in Reissner-Nordstrom-de Sitter black holes under the influence of different fundamental fields. Nevertheless, the situation has been reassuring for the case of astrophysically meaningful Kerr-de Sitter black hole solutions which seems to respect the conjecture. However, the previous analyses were done considering only the effect of scalar fields. In this paper, we extend the study by considering Dirac fields in Kerr-de Sitter background and show that there exist a parameter space which does not respect the conjecture.
description: 13 pages, 2 figures, Accepted in European Physical Journal C
COMPARISON OF CARBON ISOTOPIC COMPOSITIONS OF DISSOLVED INORGANIC CARBON (DIC) IN PORE WATERS IN TWO SITES OF THE SOUTH CHINA SEA AND SIGNIFICANCES FOR GAS HYDRATE OCCURENCE
Creators: name: Yang, Tao
name: Jiang, Shao-Yong
name: Yang, Jing-Hong
name: Ge, Lu
name: Wu, Neng-You
name: Zhang, Guang-Xue
name: Liu, Jian
Publisher: name: The University of British Columbia
Year: 2008

description: The northern margin of South China Sea contains several favorable areas for occurrence of gas hydrate. In this study, we collected pore water samples in two piston cores (X-01 and D-01) from Xisha Trough and Dongsha area, respectively, and the concentrations of sulfate and carbon isotopic compositions of dissolved inorganic carbon (DIC) were measured. The results showed different geochemical characteristics in these two sites. The X-01 core shows relatively constant δ13C-DIC values and sulfate concentrations, which suggest that anaerobic methane oxidation (AMO) processes did not occur in this site. In contrast, very large variation in δ13C-DIC values and sulfate concentrations are revealed in D-01 core, and good linear correlations for sulfate gradients and δ13C-DIC values are observed. The calculated sulfate-methane interface (SMI) depth is 9.6 mbsf. These data indicate that an AMO process occurred in sediments with large methane flux from depth in the Dongsha area, which are comparable to other gas hydrate locations in the world oceans such as the Blake Ridge. We suggest that the Dongsha area is one of the most favorable targets for future gas hydrate exploration.
Effects of Speech Cues on Acoustics and Intelligibility of Korean-speaking Children with Dysarthria
Creators: Chang, Young Hwa Michelle
Publisher: name: Columbia University
Year: 2021
Subjects: Speech therapy for children
Korean language
Speech disorders in children
Cerebral palsy
Articulation disorders

description: The motor speech disorder of dysarthria is present in a substantial number of children with cerebral palsy (CP), leading to speech intelligibility deficits, which may negatively affect the children’s communication and quality of life. Few studies to date have examined strategies for increasing intelligibility in children with dysarthria, and most have focused on English speakers. Thus, questions regarding the effects of speech cueing strategies in speakers of other languages are under-explored. The purpose of this study was to determine if (Korean translations of) two cues, “speak with your big mouth,” targeting greater articulatory excursion, and “speak with your strong voice,” targeting greater vocal intensity, would elicit changes in speech acoustics and intelligibility in Korean-speaking children with dysarthria secondary to CP. Fifteen Korean-speaking children with dysarthria repeated word- and sentence-level stimuli in habitual, big mouth, and strong voice conditions. Intelligibility was assessed through the ease-of-understanding (EoU) ratings and percentage of words correctly transcribed (PWC) by 90 blinded listeners. Results indicated significantly greater vocal intensity and greater utterance duration in the cued conditions, demonstrating the children’s ability to vary their speech styles in response to the two cues. Furthermore, word-level EoU gains following both cues and sentence-level EoU gains following the strong voice cue suggest potential intelligibility benefits of the cues in this population. Gains in PWC were not statistically significant, and considerable variability in the children’s responses to the cues was noted overall. These findings contribute to the limited knowledge base for speech-language pathologists working with Korean speaking children. The variability in responses points to the importance of assessing each child’s stimulability to cues aimed to enhance intelligibility. Further clinical and theoretical considerations, including cross-linguistic implications, are discussed.
Η άσκηση της ηγεσίας στη διαχείριση μιας έκτακτης κατάστασης ανάγκης
Creators: name: Καραμάνου, Ασπασία
name: Ιωάννα Σαρλή
name: Ιωάννα Τσούπρα
Publisher: name: figshare
Year: 2019
Subjects: subject: 130205 Humanities and Social Sciences Curriculum and Pedagogy (excl. Economics, Business and Management)
subject: FOS: Educational sciences
subject: 50205 Environmental Management
subject: FOS: Earth and related environmental sciences
subject: 150305 Human Resources Management
subject: FOS: Economics and business
subject: 130304 Educational Administration, Management and Leadership

description: Στην εργασία μελετήθηκε η άσκηση της ηγεσίας ως μια έννοια με καθολική εφαρμογή και ίσως η πιο σημαντική παράμετρος που επηρεάζει την αποδοτικότητα στην διαχείριση μιας φυσικής καταστροφής μέσω των οργανωμένων Συστημάτων Πολιτικής Προστασίας. Αξιολογήθηκαν οι θεωρητικές προσεγγίσεις περί ηγεσίας και εξετάστηκε η εφαρμογή διαφόρων μοντέλων στους διαχειριστές έκτακτης ανάγκης, οι οποίοι υποπίπτουν συχνά σε σφάλματα στη διαδικασία λήψης αποφάσεων, λαμβάνοντας μη ποιοτικές ή μη αποδεκτές αποφάσεις.Από τα ευρήματα της εργασίας καταδεικνύεται ότι απαιτείται η κατάλληλη επιλογή και προσαρμογή των πορισμάτων της διοικητικής επιστήμης στην πρακτική αξιοποίηση των ιδιαίτερων συνθηκών που δημιουργούνται κατά τη διάρκεια μιας κρίσης και όχι η δογματική υιοθέτηση των θεωρητικών προσεγγίσεων και η άκριτη μεταφορά τους.
Effects of Social Reinforcement Versus Tokens on the Spontaneous Speech of Preschoolers
Creators: Eby, Carly Moher
Publisher: name: Columbia University
Year: 2011
Subjects: Educational psychology
Special education

description: Two studies were conducted on the effects of different reinforcement contingencies on the emission of verbal operants by preschoolers. Six participants, 3 females and 3 males, 3- to 4-years old, were selected to participate in Experiment I. Six participants, 5 females and 1 male, 2- to 4-years-old, were selected for Experiment II. In Experiment I, the effects of contingent tokens versus contingent adult attention were tested on the number of tacts emitted in three different experimental settings, using an alternating treatment design. In Experiment II, the effects of contingent tokens versus contingent adult attention were tested on the number of tacts per minute and the percentage of peer-to-peer conversational units. The results from both experiments showed that these participants emitted tacts more frequently with contingent social attention than with contingent tokens. In addition, in Experiment II, peer-to-peer conversational units were low when adult attention was available and increased when adult attention was withheld. Implications of these results include, tacts are maintained specifically by social reinforcers, not simply generalized conditioned reinforcers (i.e., tokens). Thus, special attention must be paid when selecting reinforcers for teaching tacts so that the desired function is taught. Moreover, deprivation of adult-attention appears to function as a motivating operation for enhancing the value of attention from peers.
title: Machining approach to aircraft production
Creators: name: Young, Harold
Publisher: name: Avro Aircraft Limited (Canada)
Year: 1957
Subjects: subject: Avro Arrow
subject: Avro Arrow
subject: Avro Canada
subject: A.V. Roe Canada
subject: Avro Canada CF-105 Arrow
subject: CF-105
subject: Canada supersonic jet
subject: avion à réaction supersonique du Canada
subject: delta-winged supersonic interceptor
subject: intercepteur supersonique à ailes delta
subject: design and construction
subject: conception et construction
subject: materials
subject: matériaux

description: Distributed online by the National Research Council of Canada
description: Distribué en ligne par le Conseil national de recherches du Canada
Thermal Stability, P-V Criticality and Heat Engine of Charged Rotating Accelerating Black Holes
Creators: name: Panah, B. Eslam
name: Jafarzade, Kh.
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this paper, we study thermodynamic features of the charged rotating accelerating black holes in anti-de Sitter spacetime. First, we consider these black holes as the thermodynamic systems and analyze thermal stability/instability through the use of heat capacity in the canonical ensemble. We also investigate the effects of angular momentum, electric charge and string tension on the thermodynamic quantities and stability of the system. Considering the known relation between pressure and the cosmological constant, we extract the critical quantities and discuss how the mentioned parameters affect them. Then, we construct a heat engine by taking into account this black hole as the working substance, and obtain the heat engine efficiency by considering a rectangle heat cycle in the $P-V$ plane. We examine the effects of black hole parameters on the efficiency and analyze their effective roles. Finally, by comparing the engine efficiency with Carnot efficiency, we investigate conditions in order to have a consistent thermodynamic second law.
description: 25 pages, 19 figures
The Spectrum of the FeLoBAL Quasar FBQS 1214+2803: A Resonance-Scattering Interpretation
Creators: name: Branch, D.
name: Leighly, K. M.
name: Thomas, R. C.
name: Baron, E.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The usual interpetation of the spectrum of a BAL QSO is that a broad-band continuum from the central engine plus broad emission lines from a surrounding region (the BELR) emerges from near the center of the QSO, and broad absorption lines are superimposed in a separate outlying region (the BALR). For FBQS 1214+2803, designated as an FeLoBAL QSO because its spectrum contains numerous absorption features from excited states of Fe II, we explore an alternative interpretation based on resonance scattering. In this model line emission and absorption occur in the same line-forming region (the LFR). A resonance-scattering synthetic spectrum computed with the supernova synthetic-spectrum code SYNOW fits the spectrum of FBQS 1214+2802 rather well, so the resonance-scattering model merits further study. Some implications of the model and its possible applicability to other QSOs are briefly discussed.
description: 9 pages and 3 figures, accepted by ApJ Letters
title: Some performance problems associated with the Mach 2 fighter
Creators: name: Morris, John
Publisher: name: Avro Aircraft Limited (Canada)
Year: 1956
Subjects: subject: Avro Arrow
subject: Avro Arrow
subject: Avro Canada
subject: A.V. Roe Canada
subject: Avro Canada CF-105 Arrow
subject: CF-105
subject: Canada supersonic jet
subject: avion à réaction supersonique du Canada
subject: delta-winged supersonic interceptor
subject: intercepteur supersonique à ailes delta
subject: design and construction
subject: conception et construction

description: Distributed online by the National Research Council of Canada
description: Distribué en ligne par le Conseil national de recherches du Canada
On-axis spatially resolved spectroscopy of low redshift quasar host galaxies: HE 1503+0228 at z=0.135
Creators: name: Courbin, F.
name: Letawe, G.
name: Magain, P.
name: Wisotzki, L.
name: Jablonka, P.
name: Jahnke, K.
name: Kuhlbrodt, B.
name: Alloin, D.
name: Meylan, G.
name: Minniti, D.
name: Burud, I.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the first result of a comprehensive spectroscopic study of quasar host galaxies. On-axis, spatially resolved spectra of low redshift quasars have been obtained with FORS1, mounted on the 8.2m ESO Very Large Telescope, Antu. The spectra are spatially deconvolved using a spectroscopic version of the ``MCS deconvolution algorithm''. The algorithm decomposes two dimensional spectra into the individual spectra of the central point-like nucleus and of its host galaxy. Applied to HE1503+0228, at z=0.135 (M_B=-23.0), it provides us with the spectrum of the host galaxy between 3600A, and 8500A, (rest-frame), at a mean resolving power of 700. The data allow us to measure several of the important Lick indices. The stellar populations and gas ionization state of the host galaxy of HE1503+0228, are very similar to the ones measured for normal non-AGN galaxies. Dynamical information is also available for the gas and stellar components of the galaxy. Using deconvolution and a deprojection algorithm, velocity curves are derived for emission lines, from the center up to 4arcsec, away from the nucleus of the galaxy. Fitting a simple three-components mass model (point mass, spherical halo of dark matter, disk) to the position-velocity diagram, we infer a mass of M(r<1kpc) = (2.0 +- 0.3) 10^{10} solar mass within the central kiloparsec of the galaxy, and a mass integrated over 10 kpc of M(r<10kpc) = (1.9 +- 0.3) 10^{11} solar mass, with an additional 10% error due to the uncertainty on the inclination of the galaxy. This, in combination with the analysis of the stellar populations indicates that the host galaxy of HE1503+0228, is a normal spiral galaxy.
description: accepted by AA, 11 pages
Iron oxide nanoparticles stabilized with dendritic polyglycerols as selective MRI contrast agents
Creators: name: Nordmeyer, Daniel
name: Stumpf, Patrick
name: Gröger, Dominic
name: Hofmann, Andreas
name: Enders, Sven
name: Riese, Sebastian B.
name: Dernedde, Jens
name: Taupitz, Matthias
name: Rauch, Ursula
name: Haag, Rainer
name: Rühl, Eckart
name: Graf, Christina
Publisher: name: Freie Universität Berlin
Year: 2014

description: Monodisperse small iron oxide nanoparticles functionalized with dendritic polyglycerol (dPG) or dendritic polyglycerol sulfate (dPGS) are prepared. They are highly stable in aqueous solutions as well as physiological media. In particular, oleic acid capped iron oxide particles (core diameter = 11 ± 1 nm) were modified by a ligand exchange process in a one pot synthesis with dPG and dPGS bearing phosphonate as anchor groups. Dynamic light scattering measurements performed in water and different biological media demonstrate that the hydrodynamic diameter of the particles is only slightly increased by the ligand exchange process resulting in a final diameter of less than 30 nm and that the particles are stable in these media. It is also revealed by magnetic resonance studies that their magnetic relaxivity is reduced by the surface modification but it is still sufficient for high contrast magnetic resonance imaging (MRI). Additionally, incubation of dPGS functionalized iron oxide nanoparticles with human umbilical vein endothelial cells showed a 50% survival at 85 nM (concentration of nanoparticles). Surface plasmon resonance (SPR) studies demonstrate that the dPGS functionalized iron oxide nanoparticles inhibit L-selectin ligand binding whereas the particles containing only dPG do not show this effect. Experiments in a flow chamber with human myelogenous leukemia cells confirmed L-selectin inhibition of the dPGS functionalized iron oxide nanoparticles and with that the L-selectin mediated leukocyte adhesion. These results indicate that dPGS functionalized iron oxide nanoparticles are a promising contrast agent for inflamed tissue probed by MRI.
Supersymmetric quantum theory and non-commutative geometry
Creators: name: Froehlich, J.
name: Grandjean, O.
name: Recknagel, A.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Mathematical Physics (math-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Classical differential geometry can be encoded in spectral data, such as Connes' spectral triples, involving supersymmetry algebras. In this paper, we formulate non-commutative geometry in terms of supersymmetric spectral data. This leads to generalizations of Connes' non-commutative spin geometry encompassing non-commutative Riemannian, symplectic, complex-Hermitian and (Hyper-)Kaehler geometry. A general framework for non-commutative geometry is developed from the point of view of supersymmetry and illustrated in terms of examples. In particular, the non-commutative torus and the non-commutative 3-sphere are studied in some detail.
description: 77 pages, PlainTeX, no figures; present paper is a significantly extended version of the second half of hep-th/9612205. Assumptions in Sect. 2.2.5 clarified; final version to appear in Commun.Math.Phys
title: Production of an all weather long range jet fighter
Creators: name: Anderson, R. K.
name: Roe, A. V.
Publisher: name: A.V. Roe Canada Limited
Year: 1954
Subjects: subject: Avro Arrow
subject: Avro Arrow
subject: Avro Canada
subject: A.V. Roe Canada
subject: Avro Canada CF-105 Arrow
subject: CF-105
subject: Canada supersonic jet
subject: avion à réaction supersonique du Canada
subject: delta-winged supersonic interceptor
subject: intercepteur supersonique à ailes delta

description: Publisher is assumed to be "A.V. Roe Canada Limited" by the National Research Council of Canada.
description: L'éditeur est présumé d'être « A.V. Roe Canada Limited » par le Conseil national de recherches du Canada.
description: Distributed online by the National Research Council of Canada
description: Distribué en ligne par le Conseil national de recherches du Canada
The star cluster survivability after gas expulsion is independent of the impact of the Galactic tidal field
Creators: name: Shukirgaliyev, B.
name: Parmentier, G.
name: Berczik, P.
name: Just, A.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We study the impact of the tidal field on the survivability of star clusters following instantaneous gas expulsion. Our model clusters are formed with a centrally-peaked star-formation efficiency profile as a result of star-formation taking place with a constant efficiency per free-fall time. We define the impact of the tidal field as the ratio of the cluster half-mass radius to its Jacobi radius immediately after gas expulsion, $λ= r_{h}/R_{J}$. We vary $λ$ by varying either the Galactocentric distance, or the size (hence volume density) of star clusters. We propose a new method to measure the violent relaxation duration, in which we compare the total mass-loss rate of star clusters with their stellar evolutionary mass-loss rate. That way, we can robustly estimate the bound mass fraction of our model clusters at the end of violent relaxation. The duration of violent relaxation correlates linearly with the Jacobi radius, when considering identical clusters at different Galactocentric distances. In contrast, it is nearly constant for the solar neighbourhood clusters, slightly decreasing with $λ$. The violent relaxation does not last longer than 50 Myr in our simulations. Identical model clusters placed at different Galactocentric distances have the same final bound fraction, despite experiencing different impacts of the tidal field. The solar neighbourhood clusters with different densities experience only limited variations of their final bound fraction. In general, we conclude that the cluster survivability after instantaneous gas expulsion, as measured by their bound mass fraction at the end of violent relaxation, $F_{bound}$, is independent of the impact of the tidal field, $λ$.
description: accepted for publication in MNRAS, 8 pages, 5 figures,3 tables
title: The Development, Validation, and Application of a Career Calling Scale for Emerging Adults: Examining the Role of Career Calling in Career Development
Creators: name: Praskova, Anna
Publisher: name: Griffith University
Year: 2014
Subjects: subject: Adjustment (Psychology)
subject: Career calling scale
subject: Age-appropriate scale
subject: Emerging adults

description: This PhD research program aimed to fulfil three objectives: (1) develop a new measure to assess career calling in emerging adulthood, (2) apply a general goal-setting model to test cross-sectional associations between career calling, self-regulatory mechanisms (work effort, career strategies, emotion control) applied during goal pursuit, and perceived life satisfaction and employability using a sample of emerging adults, and (3) apply a calling-specific model of psychological career success to investigate longitudinal relationships among career calling, career goal-directed efforts (work effort, career strategies), and psychological career success variables (life meaning, career adaptability). This PhD thesis informs on a series of three studies reported as three individual journal articles that meet those objectives.