cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Weltwirtschaft: Fortgeschrittene Volkswirtschaften vor kräftigem Aufschwung: Grundlinien der Wirtschaftsentwicklung im Sommer 2021
Creators: name: Michelsen, Claus
name: Baldi, Guido
name: Dany-Knedlik, Geraldine
name: Engerer, Hella
name: Pasch, Sandra
Publisher: name: DIW - Deutsches Institut für Wirtschaftsforschung
Year: 2021
Subjects: subject: E32 Business Fluctuations; Cycles
subject: E66 General Outlook and Conditions
subject: F01 Global Outlook
subject: Business cycle forecast
subject: economic outlook

description: Die globale Erholung verläuft langsamer als sich noch im vergangenen Jahr andeutete. Grund für den schleppenden Jahresbeginn waren hohe Corona-Infektionszahlen und damit verbundene wirtschaftliche Restriktionen in Europa und Japan. Zuletzt zeichnete sich ein zweigeteiltes Bild ab: In den fortgeschrittenen Volkswirtschaften werden sinkende Infektionszahlen und weitere Impffortschritte voraussichtlich zu einer deutlichen Belebung führen, die besonders im Handel und Dienstleistungssektor sichtbar wird, während das verarbeitende Gewerbe wegen der hohen Rohstoffpreise kurzzeitig ein wenig hinterherhinkt. In einigen Schwellenländern hingegen dürften zuletzt rasant gestiegene Corona-Fallzahlen und eine mangelnde Impfstoffversorgung die Erholung noch ausbremsen, bevor sich die Lage wieder verbessert. Insgesamt dürfte im zweiten Halbjahr das Wachstumstempo wieder zulegen, so dass alles in allem der Ausblick für die Weltwirtschaft nahezu unverändert bleibt: In diesem Jahr geht das DIW Berlin von einem Wachstum von 6,7 Prozent aus, 2022 dürfte das Plus bei 4,9 Prozent liegen. Positive Impulse dazu liefern insbesondere die USA, der Euroraum und China, das bislang von einer weiteren Pandemie-Welle verschont blieb.
description: DIW Wochenbericht, 88 (2021), 23/24, S. 388-398
Probing Majorana neutrinos in rare pi+ to e+ e+ mu- nu decays
Creators: name: Cvetic, Gorazd
name: Dib, Claudio
name: Kim, C. S.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the rare decays of charged π mesons, π+ to e+ e+ μ- anti-ν_μ and π+ to e+ μ- e+ ν_e, induced by a sterile neutrino N with a mass in the range m_μ< m_N < m_π. The first process violates Lepton Number by two units and so occurs only if N is Majorana, while the second process conserves Lepton Number and occurs irrespective of the Majorana or Dirac character of N. We study a way to distinguish the Majorana vs. Dirac character of N in these processes using the muon spectrum. We also find that the branching ratios could be at the reach of high luminosity experiments like Project X at FNAL or any proposed neutrino (or muon) factories worldwide.
description: 20 pages, 8 figures, tex added in the introduction and section 3, equations moved to appendix in section 2
Formulación de proyectos de I+D+í con fondos concursables
Creators: name: Bermúdez Díaz, Ludisleydis
Publisher: name: Zenodo
Year: 2020
Subjects: subject: Subvención para investigación
subject: Financiación de la ciencia
subject: Administración de la ciencia y de la investigación
subject: Investigación y desarrollo
subject: Research grants
subject: Science finance
subject: Science and research management
subject: Research and development
subject: http://vocabularies.unesco.org/thesaurus/concept2071

description: Presentación para el Taller de Formulación de Proyectos de I+D+i con Fondos Concursables.
 Universidad Nacional Jorge Basadre Grohmann, Vicerrectorado de Investigación. Tacna, Perú.
 11 de agosto de 2020.
title: Deutsche Wirtschaft mit spätem Frühlingserwachen – Industrie in der Klemme: Editorial
Creators: name: Michelsen, Claus
name: Baldi, Guido
name: Clemens, Marius
name: Dany-Knedlik, Geraldine
name: Engerer, Hella
name: Fratzscher, Marcel
name: Hanisch, Max
name: Junker, Simon
name: Pagenhardt, Laura
name: Pasch, Sandra
Publisher: name: DIW - Deutsches Institut für Wirtschaftsforschung
Year: 2021

description: DIW Wochenbericht, 88 (2021), 23/24, S. 383-387
Bubble collisions and measures of the multiverse
Creators: name: Salem, Michael P.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: To compute the spectrum of bubble collisions seen by an observer in an eternally-inflating multiverse, one must choose a measure over the diverging spacetime volume, including choosing an "initial" hypersurface below which there are no bubble nucleations. Previous calculations focused on the case where the initial hypersurface is pushed arbitrarily deep into the past. Interestingly, the observed spectrum depends on the orientation of the initial hypersurface, however one's ability observe the effect rapidly decreases with the ratio of inflationary Hubble rates inside and outside one's bubble. We investigate whether this conclusion might be avoided under more general circumstances, in particular placing the observer's bubble near the initial hypersurface. We find that it is not. As a point of reference, a substantial appendix reviews relevant aspects of the measure problem of eternal inflation.
description: 24 pages, two figures, plus 16-page appendix with one figure; v2: minor improvements and clarifications, conclusions unchanged (version to appear in JCAP)
Absolutely continuous spectrum implies ballistic transport for quantum particles in a random potential on tree graphs
Creators: name: Aizenman, Michael
name: Warzel, Simone
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We discuss the dynamical implications of the recent proof that for a quantum particle in a random potential on a regular tree graph absolutely continuous spectrum occurs non-perturbatively through rare fluctuation-enabled resonances. The main result is spelled in the title.
description: Corrected version
Thermodynamics of soft wall AdS/QCD at finite chemical potential
Creators: name: Sachan, Shobhit
name: Siwach, Sanjay
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the thermodynamics of soft wall model in AdS/QCD framework. The low temperature phase of QCD is described by thermal AdS and high temperature phase by AdS Black hole solution of five dimensional gravity with negative cosmological constant. The chemical potential is introduced via the solution of U(1) vector field in the bulk. The difference of action densities in two phases is studied and the results are compared with hard wall model. The quark number susceptibility is also calculated in both the models.
description: revised version, to appear in MPLA
Condensation of Anyons in Frustrated Quantum Magnets
Creators: name: Batista, Cristian D.
name: Somma, Rolando D.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We derive the exact ground space of a family of spin-1/2 Heisenberg chains with uniaxial exchange anisotropy (XXZ) and interactions between nearest and next-nearest-neighbor spins. The Hamiltonian family, H(Q), is parametrized by a single variable Q. By using a generalized Jordan-Wigner transformation that maps spins into anyons, we show that the exact ground states of H(Q) correspond to a condensation of anyons with statistical phase phi=-4Q. We also provide matrix-product state representations of some ground states that allow for the efficient computation of spin-spin correlation functions.
description: 5 pages and 3 Figs
Powerful radio galaxies at high-redshift with ALMA
Creators: name: Hedge, Alexander John
name: Seymour, Nick
name: Broderick, Jess
Publisher: name: Zenodo
Year: 2023

description: Powerful radio galaxies are beacons of SMBHs and large-scale rapidly evolving structures in the early Universe. We highlight a confirmation of a z=3.879 radio galaxy using ALMA from a sample of candidate high-z radio galaxies recently observed with ALMA Band 3.
Estrategias de internacionalización de revistas científicas
Creators: name: Rozemblum, Cecilia
Publisher: name: Zenodo
Year: 2020
Subjects: subject: revistas científicas
subject: academic journals
subject: publicaciones científicas
subject: scientific publications
subject: internacionalización
subject: internationalization
subject: http://vocabularies.unesco.org/thesaurus/concept15070

description: Capacitación sobre internacionalización de revistas científicas. Se presentan las diferentes vías para lograr la óptima internacionalización de las revistas científicas. Fondo Editorial Universitario, Vicerrectorado de Investigación, Universidad Nacional Jorge Basadre Grohmann.
 Tacna, Perú.
 8 de setiembre de 2020.
High Spin Topologically Massive Gravity
Creators: name: Chen, Bin
name: Long, Jiang
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We propose an action to describe high spin topologically massive gravity with a negative cosmological constant. With the frame-like fields and spin connections being combined into two gauge fields, the action includes two gauge field Chern-Simons actions with different levels, and also a linear term proportional to the difference of the gauge field strengths. Such linear term play the role of imposing the torsion free conditions for high spin fields. We discuss the gauge symmetry of this action and study the fluctuations around the AdS$_3$ vacuum. We show how to relate the the fluctuations of the gauge field to the Frondal fields, using the gauge symmetry. For the gauge group $SL(n,R)\times SL(n,R)$, we find that the fluctuations of all high spin fields up to spin $n$ satisfy third order differential equations, and hence there generically exist massive traceless and trace mode for every spin.
description: 15pages;slightly revision, references added
title: Benedictus Andreas Kaspar Baron von Nomis
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: Benedictus Andreas Kaspar Baron von Nomis as a personal relation of Leibniz’s: The resource presents biographical information on a correspondent of Leibniz's
Redacción de artículos científicos: sugerencias desde el editor de la revista científica
Creators: name: Santillán-Aldana, Julio
Publisher: name: Zenodo
Year: 2020
Subjects: subject: Artículos de revistas
subject: Journal articles
subject: Revistas científicas
subject: Academic journals
subject: Publicaciones científicas
subject: Scientific publications
subject: http://vocabularies.unesco.org/thesaurus/concept15722

description: Presentación de sugerencias desde el editor de la revista científica para los autores de artículos científicos.
 Universidad Nacional Jorge Basadre Grohmann, Vicerrectorado de Investigación.
 Tacna, Perú. 12 de mayo de 2020.
Supplementary document for Real-Space Observation of Topological Invariants in 2D Photonic Systems - 4894397.pdf
Creators: name: Lu, Yong-Heng
name: Wang, Yao
name: Mei, Feng
name: Chang, Yijun
name: Gao, Jun
name: Zheng, Hang
name: Jia, Suotang
name: Jin, Xianmin
Publisher: name: Optica Publishing Group
Year: 2020
Subjects: Topology
Condensed Matter Physics not elsewhere classified
Quantum Optics
Electronic and Magnetic Properties of Condensed Matter; Superconductivity
Optical Physics not elsewhere classified

description: supplementary material
Estrategias para la indización de revistas científicas
Creators: name: Yance-Yupari, Victoria
Publisher: name: Zenodo
Year: 2020
Subjects: subject: revistas científicas
subject: academic journals
subject: publicaciones científicas
subject: scientific publications
subject: indización
subject: indexing
subject: http://vocabularies.unesco.org/thesaurus/concept15070

description: Capacitación sobre los procesos de indización de las revistas científicas. Se presentan las principales alternativas de indización de las revistas científicas. Fondo Editorial Universitario, Vicerrectorado de Investigación, Universidad Nacional Jorge Basadre Grohmann. Tacna, Perú.
How Indigenous teachers incorporate traditional worldviews and practices into classroom behaviour support
Creators: name: Moniz, Christina
Publisher: name: University of British Columbia
Year: 2013

description: Due to contextual factors that affect Indigenous populations, as well as high school graduation rates that are significantly lower than the general population, there is a need for culturally responsive behaviour support practices for Indigenous students within educational settings. The purpose of this study was to explore the traditional worldviews and practices that Indigenous teacher incorporate into the classroom to support Indigenous student behaviour. Using an ethnographic methodology, Indigenous teachers were interviewed and observed within the classroom setting. Interviews, observations and visual data were thematically analyzed. Overarching themes included: respect as a vehicle for learning, connectedness, incorporating traditional practices, social responsibility, behaviour support practices, and challenges to incorporation. Results are discussed in terms of implications for practice and use of culturally responsive behaviour support practices by Indigenous and non-Indigenous teachers. Some of the practices discussed can be incorporated by any teacher into the classroom, but some practices may be appropriate for incorporation only by teachers with Indigenous heritage.
Presentación de resultados esperados en un proyecto de I+D+i
Creators: name: Santillán-Aldana, Julio
Publisher: name: Zenodo
Year: 2020
Subjects: subject: Subvención para investigación
subject: Financiación de la ciencia
subject: Administración de la ciencia y de la investigación
subject: Investigación y desarrollo
subject: Research grants
subject: Science finance
subject: Science and research management
subject: Research and development
subject: Artículos de revistas
subject: Journals articles
subject: Publicación científica
subject: Scientific publications
subject: http://vocabularies.unesco.org/thesaurus/concept15722

description: Presentación para el Taller de Formulación de Proyectos de I+D+i con Fondos Concursables.
 Universidad Nacional Jorge Basadre Grohmann, Vicerrectorado de Investigación.
 Tacna, Perú. 11 de agosto de 2020.
Reaction mechanisms of pair transfer
Creators: name: Thompson, Ian J.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The mechanisms of nuclear transfer reactions are described for the transfer of two nucleons from one nucleus to another. Two-nucleon overlap functions are defined in various coordinate systems, and their transformation coefficients given between coordinate systems. Post and prior couplings are defined for sequential transfer mechanisms, and it is demonstrated that the combination of `prior-post' couplings avoids non-orthogonality terms, but does not avoid couplings that do not have good zero-range approximations. The simultaneous and sequential mechanisms are demonstrated for the $^{124}$Sn(p,t)$^{122}$Sn reaction at 25 MeV using shell-model overlap functions. The interference between the various simultaneous and sequential amplitudes is shown.
description: 14 pages, 3 figures, chapter 34 in "50 Years of Nuclear BCS", edited by R. A. Broglia and V. Zelevinsky: ISBN 978-981-4412-48-3 Uses WS macros (included). Corrected text and calculations as in the published version
title: Bodo von Oberg
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: Bodo von Oberg as a personal relation of Leibniz’s: The resource presents biographical information on a correspondent of Leibniz's
Nonsingular, big-bounce cosmology from spinor-torsion coupling
Creators: name: Poplawski, Nikodem
Publisher: name: arXiv
Year: 2011
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The Einstein-Cartan-Sciama-Kibble theory of gravity removes the constraint of general relativity that the affine connection be symmetric by regarding its antisymmetric part, the torsion tensor, as a dynamical variable. The minimal coupling between the torsion tensor and Dirac spinors generates a spin-spin interaction which is significant in fermionic matter at extremely high densities. We show that such an interaction averts the unphysical big-bang singularity, replacing it with a cusp-like bounce at a finite minimum scale factor, before which the Universe was contracting. This scenario also explains why the present Universe at largest scales appears spatially flat, homogeneous and isotropic.
description: 7 pages; published version
A comprehensive evaluation of human soft-tissue deformation during sitting
Creators: name: Harry, Michael
Publisher: name: Loughborough University
Year: 2023
Subjects: classificationCode: 330399
subject: Design not elsewhere classified

description: This research focuses on understanding the complex human-seat interaction. Scientific knowledge on buttock deformation is inadequate, though an appreciable amount of research has been executed in seat comfort & discomfort, seat vibrational behaviour, digital human modelling, postural ergonomics and seat dynamics. Specifically, this research explores soft tissue deformation in x, y and z axes, herein referred to as LM spread, AP spread and Compression respectively, using a motion capture system.The buttock was divided into two regions around the Greater Trochanter body landmark separated by 40mm. The upper region was known as GT and the lower as GTX. Motion capture markers were placed around the GT and GTX buttock circumference in 150 increments from the side to rear. Seating trials were performed on a rigid seat at three angles – flat, 50 and 100. At each seat incline, three (3) forms of spread values for Compression, AP spread and LM spread were obtained, leading to a series of results in Chapters 4 – 6.Each set of results comprised an array of hybrid marker values, which in turn were formed from shortlisted trial values. A series of correlation analysis were performed across all seat levels. Relationships/associations between buttock spread values were first established. Then, associations between anthropometric measurements and buttock spread values were identified. In Chapter 5, the results of the first study were validated and a further exploration was done between a rigid and cushioned seat. In Chapter 6, the results from both studies were combined to yield a larger dataset. This was done based on the statistical perspective that a larger sample size is more reliable, accurate and of a closer approximation to the actual population than either study’s sample.In Chapter 7, several concepts were introduced with the aim of breaking down the general knowledge about buttock deformation into more specific knowledge about the spread attributes of clusters/segments of the population sample. In other words, a bid to understanding how buttock deformation varies between groups of people having similar spread attributes. The key findings are discussed within each chapter, but the salient points are converged in Chapter 8. It was found that some anthropometric measurements such as hip girth and % body fat do explain the variability in buttock deformation, and that varying seat angles also have an influence on soft tissue deformation.
Lorentz gauge theory as a model of emergent gravity
Creators: name: Pak, D. G.
name: Kim, Youngman
name: Tsukioka, Takuya
Publisher: name: arXiv
Year: 2011
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider a class of Lorentz gauge gravity theories within Riemann-Cartan geometry which admits a topological phase in the gravitational sector. The dynamic content of such theories is determined only by the contortion part of the Lorentz gauge connection. We demonstrate that there is a unique Lagrangian that admits propagating spin one mode in correspondence with gauge theories of other fundamental interactions. Remarkably, despite the R^2 type of the Lagrangian and non-compact structure of the Lorentz gauge group, the model possesses rather a positive-definite Hamiltonian. This has been proved in the lowest order of perturbation theory. This implies further consistent quantization and leads to renormalizable quantum theory. It is assumed that the proposed model describes possible mechanism of emergent Einstein gravity at very early stages of the Universe due to quantum dynamics of contortion.
description: 11 pages, final version, minor corrections
title: EZB-Politik erleichtert Unternehmen Finanzierung am Markt grüner Anleihen
Creators: name: Bremus, Franziska
name: Schütze, Franziska
name: Zaklan, Aleksandar
Publisher: name: DIW - Deutsches Institut für Wirtschaftsforschung
Year: 2021
Subjects: subject: E52 Monetary Policy
subject: E58 Central Banks and Their Policies
subject: G12 Asset Pricing; Trading volume; Bond Interest Rates
subject: G18 General Financial Markets: Government Policy and Regulation
subject: Q54 Climate; Natural Disasters; Global Warming
subject: green bonds
subject: bond yields
subject: monetary policy
subject: corporate sector purchase programme (CSPP)
subject: pandemic emergency purchase programme (PEPP)

description: Der Markt für grüne Anleihen insbesondere aus dem Euroraum ist in den vergangenen Jahren stark gewachsen. Mit Blick auf die angestrebten Klimaziele der Europäischen Union ist anzunehmen, dass die Nachfrage nach Bonds, die gezielt nachhaltige Projekte fördern, künftig weiter steigen wird. Auch die Europäische Zentralbank (EZB) investiert im Rahmen ihrer Kaufprogramme in derartige Anleihen und plant eine Neuausrichtung ihrer Strategie hin zu mehr Nachhaltigkeit. Dieser Wochenbericht untersucht empirisch die Entwicklung des noch jungen grünen Anleihemarktes. Zudem wird beleuchtet, welchen Einfluss EZB-Anleihekäufe im Rahmen des Corporate Sector Purchase Programme (CSPP) und Pandemic Emergency Purchase Programme (PEPP) auf die Renditen haben. Es zeigt sich, dass die Anleihekäufe die Finanzierungsbedingungen auch für Emittenten grüner Unternehmensanleihen verbessern. Die Bonitätseinstufung eines Unternehmens ist ein entscheidendes Kriterium dafür, ob seine Anleihen von der EZB gekauft werden dürfen. Daher ist diese Bewertung auch eine wichtige Stellschraube mit Blick auf eine grünere Geldpolitik. Derzeit werden klimabezogene Risiken für Unternehmen nicht ausreichend bei der Bonitätsbewertung berücksichtigt, so dass Vorteile der grünen Anleihen im Vergleich zu konventionellen kaum Beachtung finden. Eine verbesserte Abbildung klimabezogener Risiken in der Bonitätsbewertung wäre aber nicht nur mit Blick auf die Marktstabilität wichtig, sondern könnte auch die Finanzierungsbedingungen für Emittenten grüner Anleihen weiter verbessern.
description: DIW Wochenbericht, 88 (2021), 22, S. 367-375
Witnessing dp-rank
Creators: name: Kaplan, Itay
name: Simon, Pierre
Publisher: name: arXiv
Year: 2012
Subjects: subject: Logic (math.LO)
subject: FOS: Mathematics

description: We prove that in NTP_2 theories if p is a dependent type with dp-rank >= κ, then this can be witnessed by indiscernible sequences of tuples satisfying p. If p has dp-rank infinity, then this can be witnessed by singletons (in any theory).
La indización de revistas: ¿por qué y para qué?
Creators: name: Córdoba-González, Saray
Publisher: name: Zenodo
Year: 2020
Subjects: subject: revistas científicas
subject: academic journals
subject: publicaciones científicas
subject: scientific publications
subject: indización
subject: indexing
subject: http://vocabularies.unesco.org/thesaurus/concept15070

description: Capacitación sobre los procesos de indización de las revistas científicas. Se presentan los principales criterios de indización de las revistas científicas. Fondo Editorial Universitario, Vicerrectorado de Investigación, Universidad Nacional Jorge Basadre Grohmann. Tacna, Perú.
Formation of antiwaves in gap-junction-coupled chains of neurons
Creators: name: Urban, Alexander
name: Ermentrout, Bard
Publisher: name: arXiv
Year: 2012
Subjects: subject: Neurons and Cognition (q-bio.NC)
subject: Pattern Formation and Solitons (nlin.PS)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: Using network models consisting of gap junction coupled Wang-Buszaki neurons, we demonstrate that it is possible to obtain not only synchronous activity between neurons but also a variety of constant phase shifts between 0 and π. We call these phase shifts intermediate stable phaselocked states. These phase shifts can produce a large variety of wave-like activity patterns in one-dimensional chains and two-dimensional arrays of neurons, which can be studied by reducing the system of equations to a phase model. The 2πperiodic coupling functions of these models are characterized by prominent higher order terms in their Fourier expansion, which can be varied by changing model parameters. We study how the relative contribution of the odd and even terms affect what solutions are possible, the basin of attraction of those solutions and their stability. These models may be applicable to the spinal central pattern generators of the dogfish and also to the developing neocortex of the neonatal rat.
Stochastic epidemic-type model with enhanced connectivity: exact solution
Creators: name: Williams, H. Thomas
name: Mazilu, Irina
name: Mazilu, Dan
Publisher: name: arXiv
Year: 2011
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We present an exact analytical solution to a one-dimensional model of the Susceptible-Infected-Recovered (SIR) epidemic type, with infection rates dependent on nearest-neighbor occupations. We use a quantum mechanical approach, transforming the master equation via a quantum spin operator formulation. We calculate exactly the time-dependent density of infected, recovered and susceptible populations for random initial conditions, and compare our results with a low connectivity SIR model reported by Schuetz et al.. Our results compare well to those of previous work, validating the model as a useful tool for additional and extended studies in this important area. Our model also provides exact solutions for the n-point correlation functions, and can be extended to more complex epidemic type models.
Curso virtual de gestión y edición con OJS: guía didáctica
Creators: name: Santillán-Aldana, Julio
name: Viza-Condori, Lila
name: Huayta-Enriquez, Luz
Publisher: name: Zenodo
Year: 2020
Subjects: subject: revistas científicas
subject: academic journals
subject: publicaciones científicas
subject: scientific publications
subject: open journal systems
subject: OJS
subject: http://vocabularies.unesco.org/thesaurus/concept15070

description: Guía Didáctica del curso “Gestión y Edición con OJS”, disciplina en modalidad virtual, dirigida a los miembros de los equipos editoriales de las revistas académicas y científicas institucionales, acreditadas en el Fondo Editorial de la Universidad Nacional Jorge Basadre Grohmann.
title: Correlation between BRCA1 and BRCA2 mutation, imaging and histopathological characteristics in patients with breast cancer BRCA-related.
Creators: name: Paolicelli, Simona
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Breast
subject: Oncology
subject: MR
subject: Mammography
subject: Ultrasound
subject: Screening
subject: Multidisciplinary cancer care
subject: Neoplasia
subject: Genetic defects

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: BRCA mutation represents a crucial information for breast cancer personalized screening and requires MR evaluation of the breast glands in order to detect early breast cancer. The aim of the study is to evaluate a possible correlation between...
title: Disrupted single-subject grey matter networks in non-comorbid medication-naive patients with major depressive disorder or social anxiety disorder
Creators: name: Zhao, Youjin
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: CNS
subject: Neuroradiology brain
subject: MR
subject: Experimental investigations
subject: Comparative studies

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: To psychoradiologically investigate the topological organization of single-subject gray matter (GM) networks in non-comorbid medication-naive patients with major depressive disorder (MDD) or social anxiety disorder...
The classical $J_1$-$J_2$ Heisenberg model on the Kagome lattice
Creators: name: Spenke, Martin
name: Guertler, Siegfried
Publisher: name: arXiv
Year: 2011
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: Motivated by earlier simulated annealing studies and materials with large spin on the Kagome lattice, we performed large scale parallel tempering simulations on the Kagome lattice for the extended classical Heisenberg model including next nearest neighbor interactions. We find that even a small inclusion of a $J_2$ term induces anti-ferromagnetic order which prevails in the thermodynamic limit. The magnitude of this effect is surprising. While at $J_2=0$ the finite-size behaviour does not suggest a phase-transition, at other points the numerical result is consistent with one. Close to $J_2=0$ and for a positive sign of $J_2$ two subsequent phase-transitions/crossovers are found, one of them connecting to the crossover for the $J_2=0$ case, shedding light to the pure case. The universality classes of the transitions were explored.
description: 8 pages, 10 figures
title: Emerging Trends and Controversies in Uterine Artery Embolisation
Creators: name: Crowe, Victoria
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Education and training
subject: Technical aspects
subject: Diagnostic procedure
subject: Ablation procedures
subject: MR
subject: CT
subject: Catheter arteriography
subject: Pelvis
subject: Interventional vascular
subject: Genital / Reproductive system female

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: Overview of pre-procedural imaging, including; Imaging for fibroid assessment. Features predictive of successful UAE. Features which may indicate potential complications. Update on UAE techniques, including; Radial artery approach. Analgesia...
title: Die Produktivität dürfte bei wissensintensiven Unternehmensdienstleistungen wieder steigen: Interview
Creators: name: Schiersch, Alexander
name: Wittenberg, Erich
Publisher: name: DIW - Deutsches Institut für Wirtschaftsforschung
Year: 2021

description: DIW Wochenbericht, 88 (2021), 21, S. 363
A Two-Component Generalization of the Integrable rdDym Equation
Creators: name: Morozov, Oleg I.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We find a two-component generalization of the integrable case of rdDym equation. The reductions of this system include the general rdDym equation, the Boyer-Finley equation, and the deformed Boyer-Finley equation. Also we find a Bäcklund transformation between our generalization and Bodganov's two-component generalization of the universal hierarchy equation.
Derivative expansion of the heat kernel at finite temperature
Creators: name: Moral-Gamez, F. J.
name: Salcedo, L. L.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The method of covariant symbols of Pletnev and Banin is extended to space-times with topology $\R^n\times S^1\times ... \times S^1$. By means of this tool, we obtain explicit formulas for the diagonal matrix elements and the trace of the heat kernel at finite temperature to fourth order in a strict covariant derivative expansion. The role of the Polyakov loop is emphasized. Chan's formula for the effective action to one loop is similarly extended. The expressions obtained formally apply to a larger class of spaces, $h$-spaces, with an arbitrary weight function $h(p)$ in the integration over the momentum of the loop.
description: 32 pages, no figures. Subsection on real time formalism added. To appear in Phys.Rev.D
title: Periosteal reactions in bone tumors by ultrasound
Creators: name: Mariano, Jimena
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Neoplasia
subject: Diagnostic procedure
subject: Ultrasound
subject: Musculoskeletal bone
subject: Bones

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: - To demonstrate the possibility of observing periosteal reactions using ultrasound - To assess different types of periosteal reactions in tumors with ultrasound - To correlate ultrasound findings in periosteal reactions according to radiological...
Quantum superposition of three macroscopic states and superconducting qutrit detector
Creators: name: Shnyrkov, V. I.
name: Soroka, A. A.
name: Turutanov, O. G.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Superconducting quantum coherent circuits have opened up a novel area of fundamental low-temperature science since they could potentially be the element base for future quantum computers. Here we report a quasi-three-level coherent system, the so-called superconducting qutrit, which has some advantages over a two-level information cell (qubit), and is based on the qutrit readout circuit intended to measure individually the states of each qubit in a quantum computer. The designed and implemented radio-frequency superconducting qutrit detector (rf SQUTRID) with atomic-size ScS-type contact utilizes the coherent-state superposition in the three-well potential with energy splitting Delta E_01/k_B=1.5 K at the 30th quantized energy level with good isolation from the electromagnetic environment. The reason why large values of Delta E_01 (and thus using atomic-size Nb-Nb contact) are required is to ensure an adiabatic limit for the quantum dynamics of magnetic flux in the rf SQUTRID.
description: 9 pages, 5 figures, in v.3: text extended, inset in figure 1 (the device design) added
title: Inflammatory Myofibroblastic Tumor: That differential diagnosis radiologist need to keep in mind
Creators: name: Carnelli, Carlos
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Neoplasia
subject: Education and training
subject: Education
subject: MR
subject: CT
subject: Conventional radiography
subject: Lung
subject: Abdomen

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: Review the pathogenesis and molecular biology of inflammatory myofibroblastic tumors (IMT) of the thorax and abdomen. And discuss the cross-sectional imaging findings of the thoracic and abdominal...
Kelvin-Helmholz instability in high energy heavy ion collisions
Creators: name: Csernai, L. P.
name: Strottman, D. D.
name: Anderlik, Cs.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The dynamical development of collective flow is studied in a (3+1)D fluid dynamical model, with globally symmetric, peripheral initial conditions, which take into account the shear flow caused by the forward motion on the projectile side and the backward motion on the target side. While at $\sqrt{s_{NN}} = 2.76A$\,TeV semi-peripheral Pb+Pb collisions the earlier predicted rotation effect is visible, at more peripheral collisions, with high resolution and low numerical viscosity the initial development of a Kelvin-Helmholtz instability is observed, which alters the flow pattern considerably. This effect provides a precision tool for studying the low viscosity of Quark-gluon Plasma.
description: 8 pages, 5 figures
title: Produktivität ist bei den wissensintensiven Unternehmensdienstleistungen erheblich gesunken
Creators: name: Kritikos, Alexander S.
name: Schiersch, Alexander
name: Stiel, Caroline
Publisher: name: DIW - Deutsches Institut für Wirtschaftsforschung
Year: 2021
Subjects: subject: L84 Personal, Professional, and Business Services
subject: O47 Measurement of Economic Growth; Aggregate Productivity; Cross-Country Output Convergence
subject: D24 Production; Cost; Capital, Total Factor, and Multifactor Productivity; Capacity
subject: professional services
subject: productivity

description: Die wissensintensiven unternehmensnahen Dienstleistungen, die rund 8,5 Prozent zur der nominalen Wertschöpfung beitragen, sind in Deutschland der viertgrößte Wirtschaftszweig der gewerblichen Wirtschaft. Zudem gehören sie zu den Branchen mit den höchsten Beschäftigungszuwächsen. Die Arbeitsproduktivität in diesem Bereich ist zwischen 1995 und 2014 jedoch um über 40 Prozent gesunken. Erst danach erholt sie sich leicht. Dabei fällt auf, dass größere Unternehmen höhere Produktivitätsverluste zu verzeichnen haben als kleinere. Ein wesentlicher Grund für die gefallene Arbeitsproduktivität ist eine gestiegene Vorleistungsquote, die nicht mit einem entsprechenden Rückgang der Beschäftigung einhergeht. Auch die gewachsene Teilzeitbeschäftigung erklärt einen kleinen Teil. Der Wettbewerbsdruck scheint in diesem Teil des Dienstleistungssektors zuletzt tendenziell eher angestiegen zu sein. Eine sinkende Wettbewerbsintensität dürfte daher nicht die Ursache für den Produktivitätsrückgang sein.
description: DIW Wochenbericht, 88 (2021), 21, S. 355-362
title: MR imaging of cerebral and spinal areterio-venous malformations - A case series
Creators: name: Reddy, Vendoti Nitheesha
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Diagnostic procedure
subject: MR
subject: CNS
subject: Vascular
subject: Arteriovenous malformations

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: To understand the MR imaging appearances of arterio-venous malformations in the brain and spine. To learn the possible complications of arterio-venous malformations. To observe the MR imaging appearance of treated arterio-venous...
title: Update insight into various phyllodes tumors; From A to Z
Creators: name: MOON, JIHAE
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Education and training
subject: Surgery
subject: Biopsy
subject: Ultrasound
subject: PET
subject: MR
subject: Breast

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: - To provide the cause of formation, classification, and character of phyllodes tumor - To illustrate key imaging findings of various phyllodes tumors including mammography, ultrasonography, breast MRI and PET/CT with pathologic...
Instrumentos de gestión editorial: plan operativo
Creators: name: Santillán-Aldana, Julio
Publisher: name: Zenodo
Year: 2020
Subjects: subject: revistas científicas
subject: academic journals
subject: publicaciones científicas
subject: scientific publications
subject: http://vocabularies.unesco.org/thesaurus/concept15070

description: Capacitación sobre los instrumentos básicos de gestión para proyectos editoriales de publicaciones periódicas. Se presentan los principales aspectos de la elaboración del plan operativo de una revista científica. Fondo Editorial Universitario, Vicerrectorado de Investigación, Universidad Nacional Jorge Basadre Grohmann. Tacna, Perú.
title: Altered white matter structural network in frontal/temporal lobe epilepsy due to focal cortical dysplasia: a graph theory study
Creators: name: Lin, Huan
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Neuroradiology brain
subject: MR
subject: Neural networks
subject: MR-Diffusion/Perfusion
subject: Physiological studies

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Focal cortical dysplasia (FCD) is a common structural aetiology of epilepsy [1] that mostly occurs in the temporal and frontal lobes. The epileptic discharges caused by FCD are often spatially correlated with FCD lesions [2] . In epileptic...
A variational method in the problem of screening an external charge in strongly correlated metals
Creators: name: Guzmán-Verri, G. G.
name: Shekhter, Arkady
name: Varma, C. M.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We describe a variational calculation for the problem of screening of a point charge in a layered correlated metal for dopings close to the Mott transition where the screening is non-linear due to the proximity to the incompressible insulating state. We find that external charge can induce locally incompressible regions and that the non-linear dependence of the screening on density can induce overscreening in the nearest nearby layers while preserving overall charge neutrality.
description: 7 pages, 1 figure, final version as published
title: Application of Magnetic Resonance Diffusion Kurtosis Imaging for Distinguishing Histopathologic Subtypes and Grades of Rectal Carcinoma
Creators: name: Wen, Ziqiang
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Abdomen
subject: Gastrointestinal tract
subject: MR
subject: MR-Diffusion/Perfusion
subject: MR-Functional imaging
subject: Staging
subject: Pathology

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Rectal carcinoma is one of the most common digestive malignant tumors worldwide[1]. Previously, studies indicated that preoperative neoadjuvant therapy was effective for decreasing local recurrence and increasing the chance of enhancing sphincter...
title: Why are shear stiffness and estimated intravoxel incoherent motion map correlated in the liver?
Creators: name: Matsumoto, Yuki
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Abdomen
subject: MR physics
subject: Liver
subject: MR
subject: MR-Diffusion/Perfusion
subject: MR-Elastography
subject: Physics
subject: Cirrhosis

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: 1. An IVIM model is able to obtain unique biomaterial information. 2. There is a correlation between the IVIM parameter and the shear stiffness of the...
Procesos editoriales
Creators: name: Santillán-Aldana, Julio
Publisher: name: Zenodo
Year: 2020
Subjects: subject: revistas científicas
subject: academic journals
subject: publicaciones científicas
subject: scientific publications
subject: http://vocabularies.unesco.org/thesaurus/concept15070

description: Capacitación sobre los procesos editoriales de publicaciones periódicas. Se presentan los principales aspectos de la gestión de una revista científica desde su flujo de trabajo. Fondo Editorial Universitario, Vicerrectorado de Investigación, Universidad Nacional Jorge Basadre Grohmann. Tacna, Perú.
Routh reduction and the class of magnetic Lagrangian systems
Creators: name: Langerock, B.
name: Andrés, E. García-Toraño
name: Cantrijn, F.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mathematical Physics (math-ph)
subject: Dynamical Systems (math.DS)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 37J05, 37J15, 53D20

description: In this paper, some new aspects related to Routh reduction of Lagrangian systems with symmetry are discussed. The main result of this paper is the introduction of a new concept of transformation that is applicable to systems obtained after Routh reduction of Lagrangian systems with symmetry, so-called magnetic Lagrangian systems. We use these transformations in order to show that, under suitable conditions, the reduction with respect to a (full) semi-direct product group is equivalent to the reduction with respect to an Abelian normal subgroup. The results in this paper are closely related to the more general theory of Routh reduction by stages.
description: 23 pages
title: The utility of uterine artery Doppler indices for prediction of pre-eclampsia in Port-Harcourt, Nigeria
Creators: name: Okwudire, Emecheta
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Obstetrics (Pregnancy / birth / postnatal period)
subject: Ultrasound-Spectral Doppler
subject: Ultrasound
subject: Screening
subject: Obstetrics

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Pre-eclampsia (PrE), is de novo hypertension (>140/90 mmHg) appearing after 20 weeks of gestation accompanied by proteinuria (>0.3 g/24hr).[1] It is the leading cause of maternal mortality worldwide, affecting 5-10% of pregnancies.[2] Prevalence of...
title: Anatomy of the retroperitoneal space
Creators: name: JAZZAR, MOHAMED SALIM
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Abdomen
subject: Anatomy
subject: Retroperitoneum
subject: CT
subject: Education
subject: Education and training

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: 1) Review the anatomy of the retroperitoneal space. 2) Explain the theory of interfascial spread and the communication routes within the retroperitoneal compartments and with the peritoneal and extra peritoneal...
title: Is MRI diffusion-weighted imaging a reliable tool for the diagnosis and post therapeutic follow up of extremity soft‑tissue neoplasms?
Creators: name: Rezk, Mahmoud
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Musculoskeletal soft tissue
subject: Oncology
subject: MR
subject: MR-Diffusion/Perfusion
subject: Diagnostic procedure
subject: Neoplasia

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Soft tissue sarcomas/tumors (STSs) are a diversified class of neoplasia that have diagnostic and therapeutic problems for clinical care (1). DWI has been presumed to have the ability to discriminate between benign and malignant soft-tissue tumors...
Exact two-point resistance, and the simple random walk on the complete graph minus $ N$ edges
Creators: name: Chair, Noureddine
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mathematical Physics (math-ph)
subject: Number Theory (math.NT)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: An analytical approach is developed to obtain the exact expressions for the two-point resistance, and the total effective resistance of the complete graph minus $N$ edges of the opposite vertices. These expressions are written in terms of certain numbers that we introduced which we call the Bejaia and the Pisa numbers, these numbers are the natural generalizations of the bisected Fibonacci and Lucas numbers. The correspondence between random walks and the resistor networks is then used to obtain the exact expressions for the the first passage and mean first passage times on this graph.
description: 16 pages
title: Durch Marktkonzentration erhalten Unternehmen einen größeren Teil vom Kuchen: Interview
Creators: name: Duso, Tomaso
name: Wittenberg, Erich
Publisher: name: DIW - Deutsches Institut für Wirtschaftsforschung
Year: 2021

description: DIW Wochenbericht, 88 (2021), 20, S. 348