cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Observation of dressed intra-cavity dark states
Creators: name: Wang, Yanhua
name: Zhang, Jiepeng
name: Zhu, Yifu
Publisher: name: arXiv
Year: 2011
Subjects: subject: Optics (physics.optics)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: Cavity electromagnetically induced transparency in a coherently prepared cavity-atom system is manifested as a narrow transmission peak of a weak probe laser coupled into the cavity mode. We show that with a resonant pump laser coupling the cavity-confined four-level atoms from free space, the narrow transmission peak of the cavity EIT is split into two peaks. The two peaks represent the dressed intra-cavity dark states and have a frequency separation approximately equal to the Rabi frequency of the free-space pump laser. We observed experimentally the dressed intra-cavity dark states in cold Rb atoms confined in a cavity and the experimental results agree with theoretical calculations based on a semiclassical analysis.
description: 10 pages, 6 figures
Personal Identification Number (C.N.P.) Specification
Creators: name: Guzinschi, Alexandru
Publisher: name: Zenodo
Year: 2017
Subjects: CNP
Romania
specification

description: Because no specification (official or 3rd party) exists for Personal Identification Number, reading the laws and methodological norms which regulate the structure of a Personal Identification Number was a necessary step before writing an implementation.

Because nobody likes to read laws, most of the times this step was skipped entirely and the implementation was based on different published articles, which most of the times made wrong assumption(s) and/or recommendation(s), resulting in erroneous implementations.

This specification tries to compress the entire information related to C.N.P. from laws and methodological norms which regulate it, in order to offer some guidance to software engineers and developers in understanding and implementing C.N.P. validation.
description: Status:  draft
Mass generation for abelian spin-1 particles via a symmetric tensor
Creators: name: Dalmazi, D.
name: Mendonça, E. L.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In the topologically massive BF model (TMBF) the photon becomes massive via coupling to an antisymmetric tensor, without breaking the U(1) gauge symmetry . There is no need of a Higgs field. The TMBF model is dual to a first-order (in derivatives) formulation of the Maxwell-Proca theory where the antisymmetric field plays the role of an auxiliary field. Since the Maxwell-Proca theory also admits a first-order version which makes use of an auxiliary symmetric tensor, we investigate here a possible generalization of the TMBF model where the photon acquires mass via coupling to a symmetric tensor. We show that it is indeed possible to build up dual models to the Maxwell-Proca theory where the U(1) gauge symmetry is manifest without Higgs field, but after a local field redefinition the vector field eats up the trace of the symmetric tensor and becomes massive. So the explicit U(1) symmetry can be removed unlike the TMBF model.
description: 15 pages, no figures, one reference added, two typos on page 3 fixed
title: Ο Ρόλος της Αξονικής Αγγειογραφίας 3 Φάσεων στην εκτίμηση ασθενών υποψηφίων για Μηχανική Θρομβεκτομή
title: The key role of dynamic cta of the brain for the evaluation of clinical candidates for mechanical thrombectomy
titleType: AlternativeTitle
Creators: name: Κωνσταντινίδης, Μιχαήλ
Publisher: name: Πανεπιστήμιο Δυτικής Αττικής
Year: 2023
Subjects: Μηχανική θρομβεκτομή
NIHSS
ASPECTS
Time is Brain
Αξονική Αγγειογραφία 3 Φάσεων
Λεπτομηνιγγικές αναστομώσεις
Διάχυση
Αιμάτωση
Ιχνηθέτηση Πρωτονίων

description: Το εγκεφαλικό επεισόδιο αποτελεί την κυριότερη αιτία για αναπηρία στους ενήλικες και από τις βασικότερες αιτίες θανάτου στις ηλικίες άνω των 60 ετών. Η μηχανική θρομβεκτομή αποτελεί μία αποτελεσματική θεραπεία σε ασθενείς με οξύ ισχαιμικό αγγειακό εγκεφαλικό επεισόδιο. Ο κύριος στόχος της μηχανικής θρομβεκτομής είναι η έγκαιρη αφαίρεση του θρόμβου και η άμεση επαναιμάτωση του αποφραγμένου αγγείου που συμβάλλει στην καλή πρόγνωση και βελτίωση της ποιότητας ζωής των ασθενών. Ωστόσο, δεν μπορούν όλοι οι ασθενείς να υποβληθούν στην διαδικασία της μηχανικής θρομβεκτομής. Στην κλινική πράξη, παγκοσμίως, έχουν θεσμοθετηθεί κριτήρια για την κατηγοριοποίηση των ασθενών που δύνανται να υποβληθούν σε μηχανική θρομβεκτομή. Τα κριτήρια βασίζονται σε κλινικά ευρήματα κατά την νευρολογική εξέταση(NIHSS Score), καθώς και σε απεικονιστικά μετά από την διενέργεια αξονικής τομογραφίας εγκεφάλου χωρίς χορήγηση ενδοφλέβιου σκιαγραφικού (ASPECT Score). Ταυτόχρονα, σημαντική παράμετρος για την είσοδο ή όχι του ασθενούς στον αγγειογράφο για την διενέργεια μηχανικής θρομβεκτομής είναι ο χρόνος (Time Is Brain). Το εύρος του νευρολογικού παραθύρου εξαρτάται από το φραγέν αγγείο. Η αξονική αγγειογραφία 3 φάσεων αποσκοπεί στην ανάδειξη του φραγέντος αγγείου, στην απεικόνιση του ύψους του θρόμβου κατά την πορεία του αγγείου, στο ακριβές μήκος του θρόμβου καθώς και στο ποσοστό στένωσης του αγγείου. Επίσης, μας δείχνει, από την ύπαρξη ή όχι λεπτομηνιγγικών αναστομώσεων, την δυνατότητα επανάφορας της αιμάτωσης του πληγέντος εγκεφαλικού ιστού, μετά την μηχανική θρομβεκτομή. Μελετήθησαν τα περιστατικά κατά το χρονικό διάστημα 1 έτους (03/22-03/23) που προσήλθαν στον αξονικό τομογράφο του Κοργιαλλενείου-Μπενακείου Ν.Ε.Ε.Σ. με το ερώτημα της πιθανής μηχανικής θρομβεκτομής καθώς και σε πόσα από αυτά διενεργήθηκε τελικά μηχανική θρομβεκτομή. Στην κλινική πράξη και στην διεθνή βιβλιογραφία θα συναντήσουμε και άλλες τεχνικές για την εκτίμηση των ασθενών προ της μηχανικής θρομβεκτομής. Αυτές είναι η μαγνητική τομογραφία με την χρήση των ακολουθιών διάχυσης (DWI) και ιχνηθέτησης πρωτονίων (ASL) καθώς και η αξονική τομογραφία αιμάτωσης (CTP). Έγινε συγκριτική μελέτη των διαφόρων τεχνικών και εξήχθησαν χρήσιμα συμπεράσματα.
title: G. C. Heinsius
title: An entry in the LCA Online Dictionary of Leibniz’s Correspondents and Acquaintances
titleType: Subtitle
Creators: name: (:Tba)
Publisher: name: LCA Project
Year: 2018

description: G. C. Heinsius as a personal relation of Leibniz’s: The resource presents biographical information on a correspondent of Leibniz's
Fermi surface truncation from thermal nematic fluctuations
Creators: name: Yamase, Hiroyuki
name: Metzner, Walter
Publisher: name: arXiv
Year: 2011
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We analyze how thermal fluctuations near a finite temperature nematic phase transition affect the spectral function $A({\bf k},ω)$ for single-electron excitations in a two-dimensional metal. Perturbation theory yields a splitting of the quasi-particle peak with a d-wave form factor, reminiscent of a pseudogap. We present a resummation of contributions to all orders in the Gaussian fluctuation regime. Instead of a splitting, the resulting spectral function exhibits a pronounced broadening of the quasi-particle peak, which varies strongly around the Fermi surface and vanishes upon approaching the Brillouin zone diagonal. The Fermi surface obtained from a Brillouin zone plot of $A({\bf k},0)$ seems truncated to Fermi arcs.
description: 5 pages, 3 figures, final version as published
Engaging High Street, Chestertown MD
Creators: name: Fann, Audrey
name: Martin, Bryn
name: Moody, Kelsey
name: Ren, Xiaojin
name: Savio, Hannah
name: Stokes, Bridget
Publisher: name: Partnership for Action Learning in Sustainability (PALS)
Year: 2020
Subjects: National Center for Smart Growth
PALS
Sustainability
Maryland
Kent County
Chestertown
Agriculture and Natural Resources
Fall 2020
Landscape Design
Landscape Architecture

description: Final project for LARC642: Regional Design Landscape Architecture Studio (Fall 2020). University of Maryland, College Park.
description: Landscape architecture masters students explore the rational site design process at selected project scales with the utilization of GIS as the primary tool. The primary goal of the Chestertown Streetscape Project is to assess the current selected streetscape and offer alternatives with two primary objectives: the reduction of utility lines, and activation of sense of place even with Covid-19 protocols in place. Existing planning documents and design studies are gathered and reported out to understand the context of Chestertown. Students then put forward updated renditions of Chestertown Maryland’s central boulevard, High Street.
Measurement based Controlled Not gate for topological qubits in a Majorana fermion quantum-dot hybrid system
Creators: name: Xue, Zheng-Yuan
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We propose a scheme to implement Controlled Not-gate for topological qubits in a quantum-dot-Majorana-fermion hybrid system. Quantum information is encoded on pairs of Majorana fermions, which live on the the interface between topologically trivial and nontrivial sections of a quantum nanowire deposited on an s-wave superconductor. A measurement-based two-qubit Controlled-Not gate is produced with the help of parity measurements assisted by the quantum-dot and followed by prescribed single-qubit gates. The parity measurement, on the quantum-dot and a topological qubit, is achieved by the Aharonov-Casher effect.
description: v2: Accepted by EPJD, title modified
title: Johann Theodor Heinson
title: An entry in the LCA Online Dictionary of Leibniz’s Correspondents and Acquaintances
titleType: Subtitle
Creators: name: (:Tba)
Publisher: name: LCA Project
Year: 2018

description: Johann Theodor Heinson as a personal relation of Leibniz’s: The resource presents biographical information on a correspondent of Leibniz's
Control-volume representation of molecular dynamics
Creators: name: Smith, E. R.
name: Heyes, D. M.
name: Dini, D.
name: Zaki, T. A.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 76A02, 74A25

description: A Molecular Dynamics (MD) parallel to the Control Volume (CV) formulation of fluid mechanics is developed by integrating the formulas of Irving and Kirkwood, J. Chem. Phys. 18, 817 (1950) over a finite cubic volume of molecular dimensions. The Lagrangian molecular system is expressed in terms of an Eulerian CV, which yields an equivalent to Reynolds' Transport Theorem for the discrete system. This approach casts the dynamics of the molecular system into a form that can be readily compared to the continuum equations. The MD equations of motion are reinterpreted in terms of a Lagrangian-to-Control-Volume (\CV) conversion function $\vartheta_{i}$, for each molecule $i$. The \CV function and its spatial derivatives are used to express fluxes and relevant forces across the control surfaces. The relationship between the local pressures computed using the Volume Average (VA, Lutsko, J. Appl. Phys 64, 1152 (1988)) techniques and the Method of Planes (MOP, Todd et al, Phys. Rev. E 52, 1627 (1995)) emerges naturally from the treatment. Numerical experiments using the MD CV method are reported for equilibrium and non-equilibrium (start-up Couette flow) model liquids, which demonstrate the advantages of the formulation. The CV formulation of the MD is shown to be exactly conservative, and is therefore ideally suited to obtain macroscopic properties from a discrete system.
description: 19 pages, 15 figures
Management procedure evaluation of a data-limited multispecies fishery with application to the Hawaiian bottomfish fishery
Creators: name: Bryan, Meaghan Darcy
Publisher: name: University of British Columbia
Year: 2012

description: Multispecies fisheries with technical interactions and sparse data present a challenge for assessment scientists, many of whom are now legally required to provide species-specific management advice. A key question is can these data be used to provide species-specific assessments and management advice? Secondly, in light of new assessment approaches, how would new management procedures perform with respect to the status quo? This thesis uses a novel multispecies model to reconstruct historical abundances using fishery-dependent data from the Hawaiian bottomfish fishery. In this handline fishery, hook competition and time spent handling fish limits catch rates, resulting in nonlinear relationships between CPUE and abundance. The model is jointly fit to species-specific catch and is conditioned on historical fishing effort. The model allows for hook competition and partitions time spent fishing and time spent handling fish, h. Simulation experiments showed this approach provided nearly unbiased parameter estimates unless an incorrect assumption was made about h. Empirical h estimates were unavailable, so a range of h values were imputed from information on fishing gears and sensitivity to h was evaluated. Species-specific information was disentangled using h, but no single value best described all species-specific catch equally. Leading and management parameter estimates were relatively insensitive to the assumed value of h, except for catchability at low stock size. Given the uncertainty about h, management procedure evaluation was used to evaluate management performance of the multispecies model to an aggregate model and evaluate alternative management procedures (MPs), defined by the decision rule, assessment model, and data types. Trade-offs among management objectives describing stability in catch, fishery productivity, and over-exploitation risk were compared. Trade-offs between catch and conservation objectives were largely determined by the decision rule. MPs associated with an aggregate assessment represented a balance from the aggregate perspective, but led to over-exploitation of one or more species. Average annual variation in catch was high for all MPs and highest for MPs using the multispecies approach in combination with a tag-recapture program. These results were largely robust to the assumptions about h in the assessment model and demonstrated the difficulty of co-managing multiple species.
title: Cyriacus Gabriel Heise
title: An entry in the LCA Online Dictionary of Leibniz’s Correspondents and Acquaintances
titleType: Subtitle
Creators: name: (:Tba)
Publisher: name: LCA Project
Year: 2018

description: Cyriacus Gabriel Heise as a personal relation of Leibniz’s: The resource presents biographical information on a correspondent of Leibniz's
Survival probability of mutually killing Brownian motions and the O'Connell process
Creators: name: Katori, Makoto
Publisher: name: arXiv
Year: 2011
Subjects: subject: Probability (math.PR)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: Recently O'Connell introduced an interacting diffusive particle system in order to study a directed polymer model in 1+1 dimensions. The infinitesimal generator of the process is a harmonic transform of the quantum Toda-lattice Hamiltonian by the Whittaker function. As a physical interpretation of this construction, we show that the O'Connell process without drift is realized as a system of mutually killing Brownian motions conditioned that all particles survive forever. When the characteristic length of interaction killing other particles goes to zero, the process is reduced to the noncolliding Brownian motion (the Dyson model).
description: v2: AMS-LaTeX, 20 pages, 2 figures, minor corrections made for publication in J. Stat. Phys
Mapping the State of the Art of Climate  Services Standardization from a Multi-Level  Governance Perspective (MLG)
Creators: name: Martinez, Grit
Publisher: name: Zenodo
Year: 2025
Subjects: Multi-level governance (MLP), adaptation, mitigation, climate services, standardization, EU, national, regional and local levels, decision context, ecosystem of actors, co-production processes, delivery mode, evaluation, knowledge systems, place-based needs, limits of standardization, Poland, Spain, Belgium, Germany, France.

description: This deliverable aims to gain a deeper understanding of the needs related to climate services and their standardization from a governance perspective. We focused on stakeholders at the national, regional, and local levels across Europe, seeking to learn about their experiences and requirements for integrating climate-related information into their daily activities. Our audience provided valuable insights into the challenges and barriers they face when using climate information in governance and policy making and how standards would be helpful. The engagement with our primary target group was facilitated through three key intervention methods: (1) Interviews at national, regional, and local governance levels across Europe, (2) survey, and (3) a roundtable discussion at the Climateurope2 festival in Venice (March 2024), using the fishbowl method.
title: Franciscus Mercurius van Helmont
title: An entry in the LCA Online Dictionary of Leibniz’s Correspondents and Acquaintances
titleType: Subtitle
Creators: name: (:Tba)
Publisher: name: LCA Project
Year: 2018

description: Franciscus Mercurius van Helmont as a personal relation of Leibniz’s: The resource presents biographical information on a correspondent of Leibniz's
title: Melchisédech Thévenot
title: An entry in the LCA Online Dictionary of Leibniz’s Correspondents and Acquaintances
titleType: Subtitle
Creators: name: (:Tba)
Publisher: name: LCA Project
Year: 2018

description: Melchisédech Thévenot as a personal relation of Leibniz’s: The resource presents biographical information on a correspondent of Leibniz's
High-Velocity Outflows Without AGN Feedback: Eddington-Limited Star Formation in Compact Massive Galaxies
Creators: name: Diamond-Stanic, Aleksandar M.
name: Moustakas, John
name: Tremonti, Christy A.
name: Coil, Alison L.
name: Hickox, Ryan C.
name: Robaina, Aday R.
name: Rudnick, Gregory H.
name: Sell, Paul H.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present the discovery of compact, obscured star formation in galaxies at z ~ 0.6 that exhibit >1000 km/s outflows. Using optical morphologies from the Hubble Space Telescope and infrared photometry from the Wide-field Infrared Survey Explorer, we estimate star formation rate (SFR) surface densities that approach Sigma_SFR ~ 3000 Msun/yr/kpc^2, comparable to the Eddington limit from radiation pressure on dust grains. We argue that feedback associated with a compact starburst in the form of radiation pressure from massive stars and ram pressure from supernovae and stellar winds is sufficient to produce the high-velocity outflows we observe, without the need to invoke feedback from an active galactic nucleus.
description: 6 pages, 4 figures, accepted for publication in ApJ Letters
Terahertz lasing from intersubband polariton-polariton scattering in asymmetric quantum wells
Creators: name: De Liberato, Simone
name: Ciuti, Cristiano
name: Phillips, Chris C.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Electric dipole transitions between different cavity polariton branches or between dressed atomic states with the same excitation number are strictly forbidden in centro-symmetric systems. For doped quantum wells in semiconductor microcavities, the strong coupling between an intersubband transition in the conduction band and a cavity mode produces two branches of intersubband cavity polaritons, whose normal-mode energy splitting is tunable and can be in the terahertz region. Here, we show that, by using asymmetric quantum wells, it is possible to have allowed dipolar transitions between different polaritonic branches, leading to the emission of terahertz photons. We present a quantum field theory for such a system and predict that high-efficiency, widely tunable terahertz lasing can be obtained.
The observer effect
Creators: name: de Bianchi, Massimiliano Sassoli
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Founding our analysis on the Geneva-Brussels approach to the foundations of physics, we provide a clarification and classification of the key concept of observation. An entity can be observed with or without a scope. In the second case, the observation is a purely non-invasive discovery process; in the first case, it is a purely invasive process, which can involve either creation or destruction aspects. An entity can also be observed with or without a full control over the observational process. In the latter case, the observation can be described by a symmetry breaking mechanism, through which a specific deterministic observational process is selected among a number of potential ones, as explained in Aerts' hidden measurement approach. This is what is called a product test, or product observation, whose consequences are that outcomes can only be predicted in probabilistic terms, as it is the case in typical quantum measurements. We also show that observations can be about intrinsic (stable) properties of the observed entity, or about relational (ephemeral) properties between the observer and observed entities; also, they can be about intermediate properties, neither purely classical, nor purely quantum. Our analysis allows us to propose a general conceptual characterization of quantum measurements, as observational processes involving three aspects: (1) product observations, (2) pure creation aspects and (3) ephemeral relational properties. We also discuss the important concept of non-spatiality and emphasize some of the differences and similarities between quantum and classical/relativistic observations.
description: To appear in: Foundations of Science
title: Σύστημα Διαχείρισης, Αξιολόγησης, Παρακολούθησης και Ελέγχου – Διαδικασία Εφαρμογής της Δράσης Προώθηση και Υποστήριξη Παιδιών για την ένταξή τους στην προσχολική εκπαίδευση καθώς και για την πρόσβαση παιδιών σχολικής ηλικίας, εφήβων και ατόμων με αναπηρία, σε υπηρεσίες δημιουργικής απασχόλησης
title: Management, Evaluation, Monitoring and Control System – Process Applications of the Action Promoting and Supporting Children for their inclusion in pre-school education as well as for access to school-age children, teenagers and people with disabilities, in creative employment
titleType: AlternativeTitle
Creators: name: Αμοιρίδου, Στέλλα
Publisher: name: Πανεπιστήμιο Πελοποννήσου
Year: 2023
Subjects: subject: Κοινωνική πολιτική--Ελλάδα
subject: Κοινωνικός αποκλεισμός--Ελλάδα
subject: Κράτος πρόνοιας
subject: Βελτίωση ποιότητας ζωής
subject: Εναρμόνιση Οικογενειακής και Επαγγελματικής Ζωής
subject: Κοινωνική Πρωτοβουλία
subject: Αξιολόγηση
subject: ΚΔΑΠ

description: Η παρούσα εργασία εστιάζει στη διερεύνηση και ανάλυση της δράσης "Εναρμόνιση Οικογενειακής και Επαγγελματικής Ζωής", μιας κοινωνικής πρωτοβουλίας που υλοποιείται στη χώρα τα τελευταία χρόνια. Στόχος της είναι η διασφάλιση ισότιμης πρόσβασης στην αγορά εργασίας για γονείς, η αντιμετώπιση κοινωνικού αποκλεισμού, και η αντιμετώπιση της υπογεννητικότητας. Μέσα από αξιολόγηση και σύγκριση του παρελθόντος με το παρόν, η έρευνα αναδεικνύει τα θετικά και αρνητικά στοιχεία της νέας φιλοσοφίας της δράσης. Επιπλέον, εξετάζει την κοινωνική κατάσταση στη Μακεδονία και τις προσπάθειες για βελτίωση της ποιότητας ζωής των κατοίκων. Τέλος, εξετάζει την επίδραση της δράσης στις οικογένειες, την τοπική κοινωνία, και τη ζήτηση για υπηρεσίες προσχολικής αγωγής.
Tangent lines, inflections, and vertices of closed curves
Creators: name: Ghomi, Mohammad
Publisher: name: arXiv
Year: 2012
Subjects: subject: Differential Geometry (math.DG)
subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 53A04, 53C44, 57R45, 58E10

description: We show that every smooth closed curve C immersed in Euclidean 3-space satisfies the sharp inequality 2(P+I)+V >5 which relates the numbers P of pairs of parallel tangent lines, I of inflections (or points of vanishing curvature), and V of vertices (or points of vanishing torsion) of C. We also show that 2(P'+I)+V >3, where P' is the number of pairs of concordant parallel tangent lines. The proofs, which employ curve shortening flow with surgery, are based on corresponding inequalities for the numbers of double points, singularities, and inflections of closed curves in the real projective plane and the sphere which intersect every closed geodesic. These findings extend some classical results in curve theory including works of Moebius, Fenchel, and Segre, which is also known as Arnold's "tennis ball theorem".
description: Minor revisions; To appear in Duke Math. J
Formation of Bipolar Planetary Nebulae by Intermediate-Luminosity Optical Transients
Creators: name: Soker, Noam
name: Kashi, Amit
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present surprising similarities between some bipolar planetary nebulae (PNe) and eruptive objects with peak luminosity between novae and supernovae. The later group is termed ILOT for intermediate luminosity optical transients (other terms are intermediate luminosity red transients and red novae). In particular we compare the PN NGC 6302 and the pre-PNe OH231.8+4.2, M1-92 and IRAS 22036+5306 with the ILOT NGC 300 OT2008-1. These similarities lead us to propose that the lobes of some (but not all) PNe and pre-PNe were formed in an ILOT event (or several close sub-events). We suggest that in both types of objects the several months long outbursts are powered by mass accretion onto a main-sequence companion from an AGB (or extreme-AGB) star. Jets launched by an accretion disk around the main-sequence companion shape the bipolar lobes. Some of the predictions that result from our comparison is that the ejecta of some ILOTs will have morphologies similar to those of bipolar PNe, and that the central stars of the PNe that were shaped by ILOTs should have a main-sequence binary companion with an eccentric orbit of several years long period.
description: Accepted for publication in The Astrophysical Journal
Search for $η_{c}^{\prime}$ decays into vector meson pairs
Creators: name: The BESIII Collaboration
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The processes $\etacpto ρ^{0}ρ^{0}$, $K^{*0}\bar{K}^{*0}$, and $ϕϕ$ are searched for using a sample of $1.06 \times 10^8$ $\psip$ events collected with the BESIII detector at the BEPCII collider. No signals are observed in any of the three final states. The upper limits on the decay branching fractions are determined to be $\mathcal{B}(\etacptoρ^{0}ρ^{0})<3.1\times10^{-3}$, $\mathcal{B}(\etacpto K^{*0}\bar{K}^{*0})<5.4 \times10^{-3}$, and $\mathcal{B}(\etacptoϕϕ)<2.0\times10^{-3}$ at the 90% confidence level. The upper limits are lower than the existing theoretical predictions.
description: 7 pages, 9 figures, 2 tables
title: Gottfried Thomasius
title: An entry in the LCA Online Dictionary of Leibniz’s Correspondents and Acquaintances
titleType: Subtitle
Creators: name: (:Tba)
Publisher: name: LCA Project
Year: 2018

description: Gottfried Thomasius as a personal relation of Leibniz’s: The resource presents biographical information on a correspondent of Leibniz's
Proton radioactivity half lives with Skyrme interactions
Creators: name: Routray, T. R.
name: Mishra, Abhishek
name: Tripathy, S. K.
name: Behera, B.
name: Basu, D. N.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Nuclear Theory (nucl-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The potential barrier impeding the spontaneous emission of protons in the proton radioactive nuclei is calculated as the sum of nuclear, Coulomb and centrifugal contributions. The nuclear part of the proton-nucleus interaction potential is obtained in the energy density formalism using Skyrme effective interaction that results into a simple algebraic expression. The half-lives of the proton emitters are calculated for the different Skyrme sets within the improved WKB framework. The results are found to be in reasonable agreement with the earlier results obtained for more complicated calculations involving finite range interactions.
description: 10 pages including 4 figures and 4 tables; Some typographical mistakes in text and in Eq.(8) are corrected
title: Robust Functional Principal Component Regression
Creators: name: Neubauer, Lukas
Publisher: name: TU Wien
Year: 2021
Subjects: subject: Ausreisser
subject: Funktionelle Daten
subject: Outliers
subject: Functional Data

description: This diploma thesis is about robust functional principal component regression. It is based on functional data where we observe underlying stochastic processes. In a regression setting we want to regress a scalar response onto such stochastic process. As in a multivariate setting this regression is sensitive to outliers in both response and explaining variable. That means we want to robustify this regression. A common technique for such model is to use functional principal components of the corresponding process. In this thesis we give a short overview of functional data analysis including functional principal componentsas well as a brief introduction to robust statistics. We compare two different types of estimators. One is made for regular, densely observed data whereas a new approach for irregular, longitudinal data is proposed. In a simulation study all estimators are applied to 2 models in various settings. These cover regular and irregular as well as dense or sparse data. The data is used in both clean and contaminated fashion. The results of this simulation study are partly satisfying, especially in regular settings. However, in very sparse, irregular settings the estimators are not as good. Finally, the estimators are applied to a real world example. In the Canadian Weather data we regress the annual precipitationonto temperature curves in various locations. All methods perform comparably while the newly proposed methods seem to work the best.
Dipole matrix element approach vs. Peierls approximation for optical conductivity
Creators: name: Wissgott, P.
name: Kuneš, J.
name: Toschi, A.
name: Held, K.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We develop a computational approach for calculating the optical conductivity in the augmented plane wave basis set of Wien2K and apply it for thoroughly comparing the full dipole matrix element calculation and the Peierls approximation. The results for SrVO3 and V2O3 show that the Peierls approximation, which is commonly used in model calculations, works well for optical transitions between the d orbitals. In a typical transition metal oxide, these transitions are solely responsible for the optical conductivity at low frequencies. The Peierls approximation does not work, on the other hand, for optical transitions between p- and d-orbitals which usually became important at frequencies of a few eVs
description: 11 pages, 4 figures
title: Heinrich Günt(h)er Thülemarius
title: An entry in the LCA Online Dictionary of Leibniz’s Correspondents and Acquaintances
titleType: Subtitle
Creators: name: (:Tba)
Publisher: name: LCA Project
Year: 2018

description: Heinrich Günt(h)er Thülemarius as a personal relation of Leibniz’s: The resource presents biographical information on a correspondent of Leibniz's
The relationships between fundamental movement patterns, spike jump technique, and overuse pain in collegiate volleyball players
Creators: name: Harris, Mischa
Publisher: name: University of British Columbia
Year: 2012

description: Despite an exceptionally high prevalence of overuse injury among elite volleyball players, very little is known about the aetiology of these conditions. Fundamental movement patterns have been found to be predictive of serious acute athletic injury, however the relationship between fundamental movement patterns and overuse injury has yet to be determined. Sport-specific jumping biomechanics have been shown to play an additional role in the development of overuse injuries in sport, and it is likely that combining fundamental and sport-specific movement assessment may possess greater predictive power than either alone. The purpose of this investigation was to evaluate how volleyball-related overuse injuries are related to fundamental movement patterns and volleyball spike jump technique. We hypothesized that volleyball players with a history of overuse injury would exhibit more dysfunctional fundamental and sport-specific movement than players without a history of injury. Fifty-seven male and female collegiate volleyball players took part in Functional Movement Screen testing, and athletes free of lower body pain (n=31) took part in a 2-dimensional kinematic analysis of spike jump technique using Dartfish video analysis software. Volleyball players with a history of overuse low back injury had significantly lower Active Straight Leg Raise scores compared to healthy players (p=0.011). Various aspects of hip mechanics during the spike jump were significantly related to a history of shoulder, low back, and knee pain (p<0.01), and the Shoulder Mobility test was significantly correlated to 2 aspects of hip mechanics during the spike jump for females (R² = 0.560, p<0.01). Additionally, males with a history of overuse pain tended to jump 14 cm higher than their healthy teammates (p<0.01). Both fundamental and sport-specific hip mechanics appear to have a link to overuse injuries among collegiate volleyball players.
2D and 3D topological insulators with isotropic and parity-breaking Landau levels
Creators: name: Li, Yi
name: Zhou, Xiangfa
name: Wu, Congjun
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We investigate topological insulating states in both two and three dimensions with the harmonic potential and strong spin-orbit couplings breaking the inversion symmetry. Landau-level like quantizations appear with the full 2D and 3D rotational symmetry and time-reversal symmetry. Inside each band, states are labeled by their angular momenta over which energy dispersions are strongly suppressed by spin-orbit coupling to nearly flat. The radial quantization generates energy gaps between neighboring bands at the order of the harmonic frequency. Helical edge or surface states appear on open boundaries characterized by the Z2 index. These Hamiltonians can be viewed from the dimensional reduction of the high dimensional quantum Hall states in 3D and 4D flat spaces. These states can be realized with ultra-cold fermions inside harmonic traps with the synthetic gauge fields.
Measurement of the 18Ne(a,p_0)21Na reaction cross section in the burning energy region for X-ray bursts
Creators: name: Salter, P. J. C.
name: Aliotta, M.
name: Davinson, T.
name: Falou, H. Al
name: Chen, A.
name: Davids, B.
name: Fulton, B. R.
name: Galinski, N.
name: Howell, D.
name: Lotay, G.
name: Machule, P.
name: Murphy, A. StJ.
name: Ruiz, C.
name: Sjue, S.
name: Taggart, M.
name: Walden, P.
name: Woods, P. J.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The 18Ne(a,p)21Na reaction provides one of the main HCNO-breakout routes into the rp-process in X-ray bursts. The 18Ne(a,p_0)21Na reaction cross section has been determined for the first time in the Gamow energy region for peak temperatures T=2GK by measuring its time-reversal reaction 21Na(p,a)18Ne in inverse kinematics. The astrophysical rate for ground-state to ground-state transitions was found to be a factor of 2 lower than Hauser-Feshbach theoretical predictions. Our reduced rate will affect the physical conditions under which breakout from the HCNO cycles occurs via the 18Ne(a,p)21Na reaction.
description: 5 pages, 3 figures, accepted for publication on Physical Review Letters
Nonequilibrium quantum dynamics of the magnetic Anderson model
Creators: name: Becker, Daniel
name: Weiss, Stephan
name: Thorwart, Michael
name: Pfannkuche, Daniela
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the non-equilibrium dynamics of a spinful single-orbital quantum dot with an incorporated quantum mechanical spin-1/2 magnetic impurity. Due to the spin degeneracy, double occupancy is allowed, and Coulomb interaction together with the exchange coupling of the magnetic impurity influence the dynamics. By extending the iterative summation of real-time path integrals (ISPI) to this coupled system, we monitor the time-dependent non-equilibrium current and the impurity spin polarization to determine features of the time-dependent non-equilibrium dynamics. We particulary focus on the deep quantum regime, where all time and energy scales are of the same order of magnitude and no small parameter is available. We observe a significant influence of the non-equilibrium decay of the impurity spin polarization both in the presence and in the absence of Coulomb interaction. The exponential relaxation is faster for larger bias voltages, electron-impurity interactions and temperatures. We show that the exact relaxation rate deviates from the corresponding perturbative result. In addition, we study in detail the impurity's back action on the charge current and find a reduction of the stationary current for increasing coupling to the impurity. Moreover, our approach allows us to systematically distinguish mean-field Coulomb and impurity effects from the influence of quantum fluctuations and flip-flop scattering, respectively. In fact, we find a local maximum of the current for a finite Coulomb interaction due to the presence of the impurity.
description: 32 pages, 15 figures
Observational Probes of Cosmic Acceleration
Creators: name: Weinberg, David H.
name: Mortonson, Michael J.
name: Eisenstein, Daniel J.
name: Hirata, Christopher
name: Riess, Adam G.
name: Rozo, Eduardo
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The accelerating expansion of the universe is the most surprising cosmological discovery in many decades, implying that the universe is dominated by some form of "dark energy" with exotic physical properties, or that Einstein's theory of gravity breaks down on cosmological scales. The profound implications of cosmic acceleration have inspired ambitious experimental efforts to measure the history of expansion and growth of structure with percent-level precision or higher. We review in detail the four most well established methods for making such measurements: Type Ia supernovae, baryon acoustic oscillations (BAO), weak gravitational lensing, and galaxy clusters. We pay particular attention to the systematic uncertainties in these techniques and to strategies for controlling them at the level needed to exploit "Stage IV" dark energy facilities such as BigBOSS, LSST, Euclid, and WFIRST. We briefly review a number of other approaches including redshift-space distortions, the Alcock-Paczynski test, and direct measurements of H_0. We present extensive forecasts for constraints on the dark energy equation of state and parameterized deviations from GR, achievable with Stage III and Stage IV experimental programs that incorporate supernovae, BAO, weak lensing, and CMB data. We also show the level of precision required for other methods to provide constraints competitive with those of these fiducial programs. We emphasize the value of a balanced program that employs several of the most powerful methods in combination, both to cross-check systematic uncertainties and to take advantage of complementary information. Surveys to probe cosmic acceleration produce data sets with broad applications, and they continue the longstanding astronomical tradition of mapping the universe in ever greater detail over ever larger scales.
description: 289 pages, 55 figures. Accepted for publication in Physics Reports. Description of changes since original version --- fractionally small but significant in total --- is available at http://www.astronomy.ohio-state.edu/~dhw/Review
Correlated two-photon scattering in cavity optomechanics
Creators: name: Liao, Jie-Qiao
name: Law, C. K.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present an exact analytical solution of the two-photon scattering in a cavity optomechanical system. This is achieved by solving the quantum dynamics of the total system, including the optomechanical cavity and the cavity-field environment, with the Laplace transform method. The long-time solution reveals detailed physical processes involved as well as the corresponding resonant photon frequencies. We characterize the photon correlation induced in the scattering process by calculating the two-photon joint spectrum of the long-time state. Clear evidence for photon frequency anti-correlation can be observed in the joint spectrum. In addition, we calculate the equal-time second-order correlation function of the cavity photons. The results show that the radiation pressure coupling can induce photon blockade effect, which is strongly modulated by the phonon sideband resonance. In particular, we obtain an explicit expression of optomechanical coupling strength determining these sideband modulation peaks based on the two-photon resonance condition.
description: 10 pages, 6 figures
Measures of Galaxy Environment - I. What is "Environment"?
Creators: name: Muldrew, Stuart I.
name: Croton, Darren J.
name: Skibba, Ramin A.
name: Pearce, Frazer R.
name: Ann, Hong Bae
name: Baldry, Ivan K.
name: Brough, Sarah
name: Choi, Yun-Young
name: Conselice, Christopher J.
name: Cowan, Nicolas B.
name: Gallazzi, Anna
name: Gray, Meghan E.
name: Grützbauch, Ruth
name: Li, I-Hui
name: Park, Changbom
name: Pilipenko, Sergey V.
name: Podgorzec, Bret J.
name: Robotham, Aaron S. G.
name: Wilman, David J.
name: Yang, Xiaohu
name: Zhang, Youcai
name: Zibetti, Stefano
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The influence of a galaxy's environment on its evolution has been studied and compared extensively in the literature, although differing techniques are often used to define environment. Most methods fall into two broad groups: those that use nearest neighbours to probe the underlying density field and those that use fixed apertures. The differences between the two inhibit a clean comparison between analyses and leave open the possibility that, even with the same data, different properties are actually being measured. In this work we apply twenty published environment definitions to a common mock galaxy catalogue constrained to look like the local Universe. We find that nearest neighbour-based measures best probe the internal densities of high-mass haloes, while at low masses the inter-halo separation dominates and acts to smooth out local density variations. The resulting correlation also shows that nearest neighbour galaxy environment is largely independent of dark matter halo mass. Conversely, aperture-based methods that probe super-halo scales accurately identify high-density regions corresponding to high mass haloes. Both methods show how galaxies in dense environments tend to be redder, with the exception of the largest apertures, but these are the strongest at recovering the background dark matter environment. We also warn against using photometric redshifts to define environment in all but the densest regions. When considering environment there are two regimes: the 'local environment' internal to a halo best measured with nearest neighbour and 'large-scale environment' external to a halo best measured with apertures. This leads to the conclusion that there is no universal environment measure and the most suitable method depends on the scale being probed.
description: 14 pages, 9 figures, 1 table, published in MNRAS
What should a robot do? : design and implementation of human-like hesitation gestures as a response mechanism for human-robot resource conflicts
Creators: name: Moon, AJung
Publisher: name: University of British Columbia
Year: 2012

description: Resource conflict arises when people share spaces and objects with each other. People easily resolve such conflicts using verbal/nonverbal communication. With the advent of robots entering homes and offices, this thesis builds a framework to develop a natural means of managing shared resources in human-robot collaboration contexts. In this thesis, hesitation gestures are developed as a communicative mechanism for robots to respond to human-robot resource conflicts. In the first of the three studies presented in this thesis (Study I), a pilot experiment and six online surveys provided empirical demonstrations that humans perceive hesitations from robot trajectories mimicking human hesitation motions. Using the set of human motions recorded from Study I, a characteristic acceleration profile of hesitation gestures was extracted and distilled into a trajectory design specification representing hesitation, namely the Acceleration-based Hesitation Profile (AHP). In Study II, the efficacy of AHP was tested and validated. In Study III, the impact of AHP-based robot motions was investigated in a Human-Robot Shared-Task (HRST) experiment. The results from these studies indicate that AHP-based robot responses are perceived by human observers to convey hesitation, both in observational and in situ contexts. The results also demonstrate that AHP-based responses, when compared with the abrupt collision avoidance responses typical of industrial robots, do not significantly improve or hinder human perception of the robot and human-robot team performance. The main contribution of this work is an empirically validated trajectory design that can be used to convey a robot’s state of hesitation in real-time to human observers, while achieving the same collision avoidance function as a traditional collision avoidance trajectory.
Finding critical points whose polarization is also a critical point
Creators: name: Squassina, Marco
name: Van Schaftingen, Jean
Publisher: name: arXiv
Year: 2011
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 49J35 (35B07, 35J20)

description: We show that near any given minimizing sequence of paths for the mountain pass lemma, there exists a critical point whose polarization is also a critical point. This is motivated by the fact that if any polarization of a critical point is also a critical point and the Euler-Lagrange equation is a second-order semi-linear elliptic problem, T. Bartsch, T. Weth and M. Willem (J. Anal. Math., 2005) have proved that the critical point is axially symmetric.
description: 7 pages
JRP15-AMR2.1-D5.4 WorldCOM 12M Progress and Financial Report
Creators: name: Burke, Liam
name: O'Connor, Louise
name: Morris, Dearbháile
name: Higgins, Owen
name: Van Vliet, Arnoud
name: Caniça, Manuela
name: Manageiro, Vera
name: Berens, Christian
name: Menge, Christian
name: Gonzalez-Zorn, Bruno
name: Kisand, Veljo
name: La Ragione, Roberto
name: Smith, Terry
Publisher: name: Zenodo
Year: 2021
Subjects: WorldCOM

description: WorldCOM 12M progress and financial report
title: Konrad Henfling
title: An entry in the LCA Online Dictionary of Leibniz’s Correspondents and Acquaintances
titleType: Subtitle
Creators: name: (:Tba)
Publisher: name: LCA Project
Year: 2018

description: Konrad Henfling as a personal relation of Leibniz’s: The resource presents biographical information on a correspondent of Leibniz's