bluuebunny/crossref_metadata_2025 huggingface dataset:
A new nonlinear polyconvex orthotropic material model for the robust simulation of technical fabrics in civil engineering applications at large strains – Validation with large-scale experiment/Ein neues polykonvexes orthotropes Materialmodell zur robusten Simulation von Textilmembranen im Bauingenieur- wesen unter Berücksichtigung großer Deformationen – Validierung anhand eines Großbauteilversuchs
Authors: Motevalli Mehran , Uhlemann Jörg , Stranghöner Natalie , Balzani Daniel
Published: January 2021

Abstract A polyconvex orthotropic material model is proposed for the simulation of tensile membrane structures. The notion of anisotropic metric tensors is employed in the formulation of the polyconvex orthotropic term which allows for the description of the interaction of the warp and fill yarns. The model is adjusted to the stress-strain paths of uni- and biaxial tensile tests of a woven fabric and the results are compared with the linear elastic model. The lateral contraction in the uniaxial loading case is taken into account to also capture the strong crosswise interactions. An increased number of load cycles is considered in the experiments to reach a saturated elastic state of the material. A new method is proposed enabling in principle the identification of unique (linear) stiffness parameters by previously identifying the (nonlinear) model parameters. Eventually, the proposed nonlinear model contains only 4 material parameters to be identified for the individual membrane material. Moreover, a new large-scale experimental setting is presented which allows for the validation of the proposed model response in real-life engineering applications. The numerical robustness of the model is tested in an advanced simulation of a large roof structure under application of realistic boundary conditions.
FE-Berechnung von geklebtem Brettsperrholz – Teil 1: Theorie/FE calculation of glued cross laminated timber – part 1: theory
Authors: Aondio Patrik , Glaser Peter , Kreuzinger Heinrich
Published: January 2021

Zusammenfassung Das Bauprodukt Brettsperrholz erfreut sich immer größerer Beliebtheit und wird vermehrt in der Baupraxis eingesetzt. Um den praktisch tätigen beziehungsweise interessierten Tragwerksplanern Informationen zur statischen Berechnung von Brettsperrholz mit Hilfe der Finite-Element-Methode (FEM) zu geben, werden in diesem Beitrag die wichtigsten Grundlagen widergegeben.
Methode zur effizienten Modellierung von Verbunddeckensystemen im Brandfall/Efficient Method for Modelling of Composite Slabs in Case of Fire
Authors: Müller André , Lange Nils , Gaigl Christian , Mensinger Martin
Published: January 2021

Zusammenfassung Im Rahmen dieses Aufsatzes wird eine effiziente Methode zur Modellierung von Verbunddeckensystemen im Brandfall, die aus Stahlbeton oder Verbundplatten mit geschützten und ungeschützten Stahlträgern bestehen, aufbauend auf der Methode von Stadler [1] vorgestellt. Diese Methode berücksichtigt durch eine Modellierung des gesamten Verbunddeckensystems mit anschließender geometrisch nicht-linearer Berechnung (Theorie III. Ordnung) die im Brandfall günstig wirkende Membranwirkung. Ziel der Methode ist es, einen möglichst geringen Modellierungsaufwand bei gleichzeitig möglichst wirklichkeitsnahen Ergebnissen zu generieren. Der geringe Modellierungsaufwand wird zum einen über eine Modellierung der Stahlbetonplatte mittels Schalenelementen, die mithilfe von Layer-Elementen einen geschichteten Temperaturverlauf über die Dicke abbilden können, erzielt. Diese geschichteten Layer-Elemente sind in diversen kommerziellen Softwarepaketen, wie beispielsweise in Sofistik [22], implementiert. Zum anderen werden die Stahlträger mit einfachen Stabelementen modelliert. Um die Ergebnisse der vorgestellten Methode validieren zu können, werden Ergebnisse aus Brandversuchen [2], die von der Technischen Universität München durchgeführt wurden, herangezogen. Die vorgestellte Methode ist darüber hinaus weitgehend unabhängig von der thermischen Einwirkung, sodass neben der üblichen Beanspruchung durch die Einheitstemperaturzeitkurve (ETK) [3] ebenso Naturbrandmodelle, wie die parametrisierte Naturbrandkurve nach Nationalem Anhang des Eurocodes 1 Teil 1–2 [4], berücksichtigt werden können.
Verstärkung für Fahrbahnplatten von Massivbrücken aus Textilbeton: Versuche zur Realisierung eines Demonstrators/Strengthening of Solid Bridge Deck Slabs with Textile Reinforced Concrete: Demonstrator Tests
Authors: Adam Viviane , Will Norbert , Hegger Josef
Published: January 2021

Zusammenfassung Verkehrssteigerungen erhöhen die Anforderungen an den Brückenbestand. In einem vom Bundesministerium für Bildung und Forschung (BMBF) geförderten Verbundprojekt wurde eine dünne Ergänzungsschicht aus Textilbeton – Smart-Deck – für Brückenfahrbahnplatten mit drei Eigenschaften entwickelt: Feuchtemonitoring, präventiver kathodischen Korrosionsschutz und Erhöhung der Tragfähigkeit. Am Institut für Massivbau der RWTH Aachen (IMB) wurde die Verstärkungswirkung in Hinblick auf die Biege- und Querkrafttragfähigkeit untersucht. Nach einigen Laborversuchen zur Findung geeigneter Materialkombinationen und gezielten Untersuchung der oben genannten Funktionen der carbonbewehrten Zusatzschicht wurde ein erster Demonstrator realisiert, an dem die baustellengerechte Herstellung von Smart-Deck und weiterhin die nach realitätsnaher Herstellung erreichbaren Funktionen überprüft werden konnten. Im nachfolgenden Beitrag werden die experimentellen Untersuchungen vorgestellt, über die der Beitrag von Smart-Deck zur Tragfähigkeit der Demonstratorplatte ermittelt werden konnte. Dazu wurden Streifen mit unterschiedlichem Biegezugbewehrungsgrad entnommen und am IMB mit variierenden Laststellungen getestet.
Ein Modell mit Boden-Bauwerk-Interaktion zur dynamischen Berechnung von Eisenbahnbrücken/A model with soil-structure interaction for the dynamic analysis of railway bridges
Authors: Adam Christoph , Hirzinger Benjamin
Published: January 2021

Zusammenfassung In diesem Beitrag wird eine einfache Modellierungsstrategie zur schnellen und effizienten Berechnung der dynamischen Antwort von Brücken zufolge der Überfahrt mit Hochgeschwindigkeitszügen vorgestellt. Dabei wird sowohl die Boden-Bauwerk-Interaktion als auch die Wirkung des Zuges während der Zufahrphase auf das Tragwerk beziehungsweise nach dem Abfahren berücksichtigt. Im mechanischen Modell wird die Brücke als Bernoulli-Euler -Balken, welcher von den statischen Achslasten des Hochgeschwindigkeitszugs überfahren wird, beschrieben. Feder und Dämpfer an den Rändern des Balkens bilden das Verhalten des Untergrunds ab. Die Ergebnisse eines Anwendungsbeispiels zeigen, dass die Boden-Bauwerk-Interaktion die berechnete dynamische Antwort wesentlich beeinflusst.
Das Erweiterte Druckbogenmodell für die Nachrechnung von Spannbetonbrücken – Theoretische Hintergründe/Application of the extended arch action model for the reassessment of prestressed concrete bridges
Authors: Gleich Philipp , Maurer Reinhard
Published: January 2021

Zusammenfassung Die Nachrechnungen bestehender, älterer deutscher Spannbetonbrücken auf Grundlage der aktuell gültigen Normen und Richtlinien zeigen im Allgemeinen erhebliche Defizite in Bezug auf die erforderliche Querkraftbewehrung. Im Zuge von Forschungstätigkeiten im Auftrag der Bundesanstalt für Straßenwesen (BASt) wurden an der TU Dortmund Großversuche durchgeführt, um das Querkrafttragverhalten durchlaufender Spannbetonbalken genauer zu untersuchen. Daraus wurde auf Basis des Druckbogenmodells (DBM) das Erweiterte Druckbogenmodell (EDBM) abgeleitet, welches ein mögliches analytisches Verfahren zur Bestimmung des Betontraganteils bei Querkraft ist.

So lässt sich die Querkrafttragfähigkeit vorgespannter Balken realitätsnäher bestimmen, als nach dem Fachwerkmodell mit Rissreibung gemäß aktueller Normung. Der vorliegende Beitrag liefert Hinweise und Erläuterungen zum DBM und EDBM hinsichtlich der Anwendung auf reale Bauwerke mit zugehörigem Sicherheitskonzept für eine Stufe-4-Nachrechnung.
Die unternehmerisch verantwortungsvolle Digitalisierung im Bauwesen/Corporate Digital Responsibility (CDR) in Construction Engineering
Authors: Weber-Lewerenz B.
Published: January 2021

Zusammenfassung Die Digitalisierung entwickelt sich so rasant, dass das digitale Planen, Bauen und Betreiben einen verantwortungsvollen Umgang notwendig machen. Dabei tragen die Bauunternehmen eine signifikant hohe soziale Verantwortung, insbesondere für den verantwortungsvollen Umgang mit der Digitalisierung von Unternehmen in Zeiten von Künstlicher Intelligenz (Englische Kurzform: CDR, Corporate Digital Responsibility). CDR im Bauwesen benötigt eine ganzheitliche Überprüfung des Status Quo, der Anforderungen, neuer Technologien, interdisziplinärer Schnittstellen, aktueller Forschung, der Gestaltung der praktischen Umsetzung und des gesetzlichen Rahmens. Ansätze für den erfolgreichen Transformationsprozess dieser einzigartigen Branche lassen sich daraus ableiten und die Stellschrauben, an denen gedreht werden muss, darstellen.
Bewertung von Rauchschutzdruckanlagen und Wassernebellöschanlagen zur Sicherstellung bauordnungsrechtlicher Schutzziele
Authors: Nehr Sascha , Rosse Joel
Published: January 2021

Um das Leben von Menschen und Tieren zu schützen, schreibt das Baurecht brandschutztechnische Maßnahmen vor. Diese können sowohl baulich als auch anlagentechnisch umgesetzt werden. Bei der Entscheidung für eine konkrete brandschutztechnische Maßnahme ist neben der Sicherheit auch die Wirtschaftlichkeit ein bedeutendes Kriterium. In dieser Arbeit wird ein modellgestützter Vergleich der technisch anerkannten Rauchschutzdruckanlage (RDA) mit der alternativen Wassernebellöschanlage (WNLA) herangezogen zum Zweck der Kostenminimierung bei gleichzeitiger Sicherstellung bauordnungsrechtlicher Schutzziele im Bereich des Brandschutzes.
Radiale Diffusoren mit Drallerzeugung für schlanke Speicher
Authors: Platzer Bernd , Urbanck Thorsten , Kroll Ullrich , Mücke Jan Markus
Published: January 2021

Radiale Diffusoren werden oft zur Be- und Entladung von Warm- und Heißwasserspeichern eingesetzt. Bei schlanken Speichern treten intensive Mischungseffekte, wenn das Fluid (Wärmeträger, Wasser) in den Speicher eintritt [1], [2], auf. Ein neuer Ansatz beschäftigt sich mit einer zusätzlichen Drallerzeugung [3], [4]. Dadurch soll der Schichtungsaufbau beziehungsweise die thermische Schichtung verbessert werden. Strömungssimulationen lieferten bereits vielversprechende Ergebnisse [4], [5]. Dieser zweiteilige Beitrag stellt weiterführende Untersuchungen beziehungsweise erste Ergebnisse vor, die mit einem Versuchsstand und dem Einsatz von Diffusormodellen gewonnen wurden. Im ersten Teil [6] erfolgte die Erläuterung von Grundlagen und die Beschreibung des Versuchsstandaufbaus. Der zweite Teil liefert eine detaillierte Vorstellung und Auswertung der experimentellen Ergebnisse.
Illegale Importe unterlaufen Klimaschutzbemühungen
Authors: Gerstel Joachim
Published: January 2021

Der Schwarzmarkt blüht: Das ist die Situation im Markt der HFKW-Kältemittel, die in nahezu allen kälte- und klimatechnischen Anwendungen zum Einsatz kommen. Eine europäische Verordnung reduziert die in Verkehr gebrachten Mengen im Sinne des Klimaschutzes. Das hat Kriminelle auf den Plan gerufen, die illegale HFKW vor allem für den Service anbieten. Der Umfang ist erheblich: Illegale Importe aus dubiosen Quellen könnten bis zu einem Drittel des Marktes entsprechen. Betreiber von Kälte- und Klimaanlagen, aber auch Wartungsfirmen, sollten wachsam sein.
From perception to inference: Utilization of probabilities as decision weights in children
Authors: Betsch Tilmann , Lindow Stefanie , Lehmann Anne , Stenmans Rachel
Published: January 2021

In a probabilistic inference task (three probabilistic cues predict outcomes for two options), we examined decisions from 233 children (5–6 vs. 9–10 years). Contiguity (low vs. high; i.e., position of probabilistic information far vs. close to options) and demand for selectivity (low vs. high; i.e., showing predictions of desired vs. desired and undesired outcomes) were varied as configural aspects of the presentation format. Probability utilization was measured by the frequency of following the predictions of the highest validity cue in choice. High contiguity and low demand for selectivity strongly and moderately increased probability utilization, respectively. Children are influenced by presentation format when using probabilities as decision weights. They benefit from perception-like presentations that present probabilities and options as compounds.
Maßnahmen zur Förderung der Problemlösekompetenz – die mathematikdidaktische Perspektive
Authors: Rott Benjamin
Published: January 2021

Nicht nur in der Psychologie, sondern auch in der Mathematikdidaktik wurden und werden Konzepte und Maßnahmen zur Förderung der Problemlösekompetenz entwickelt. Teilweise richten sich diese direkt an die Lernen-den, teilweise werden Lehrende geschult, um ihrerseits dann die Kompetenzen von Schülerinnen und Schülern zu fördern. In einem Workshop während der Tagung wurden Fördermaßnahmen zusammengetragen, verglichen und kritisch diskutiert. Dabei wurden insbesondere die folgenden beiden Fragen angesprochen: (1) Welche (Teil-) Konzepte bzw. Maßnahmen haben sich als erfolgreich erwiesen und wie? (2) An welchen Stellen eröffnen sich Verbesserungspotentiale? Ziele des Workshops waren die Entwicklung gemeinsamer Konzeptideen und das Anbahnen von Kooperationen (im Rahmen des Arbeitskreises Problem-lösen und darüber hinaus) zu ihrer Umsetzung. Dieser Beitrag verfolgt zusätzlich das Ziel, die vorgestellten Projekte mithilfe eines Rasters zu sortieren, um einen Vergleich auf verschiedenen Ebenen zu erleichtern.
Lernwerkstatt (ZundER): Förderung der Zuhör- und Erzählkompetenzen an einem außerschulischen Lernort
Authors: Fekete Olga
Published: January 2021

In diesem Beitrag werden die mit der hier vorgestellten Lernwerkstatt (ZundEr) verbundenen Potenziale und Voraussetzungen behandelt, indem das Konzept und der Aufbau der Lernwerkstatt vorgestellt und studentische Sichtweisen auf ein konkretes Programmangebot u.a. in Hinblick auf die Vorteile medialer Unterstützung dargestellt und diskutiert werden.
Repensando práticas: delegacias da mulher enquanto espaço dialógico de prevenção à violência conjugal
Authors: Maffioleti Cavaler Camila , Mafioletti Macarini Samira
Published: January 2021

Neste estudo, trata-se de um ensaio teórico cujo objetivo é discutir o papel das delegacias especializadas de atendimento à mulher (DMs), a partir do olhar da Psicologia com enfoque de gênero, reflexivo e sistêmico. As DMs desenvolvem procedimentos relativos à apuração de infrações cometidas mediante violência doméstica ou familiar, nos termos da Lei 11.340/2006. No entanto, neste artigo buscase enfatizar as DMs também como um espaço de fortalecimento das medidas integradas de prevenção a esse tipo de violência, trazendo foco para o eixo preventivo instituído pela referida lei. Para tanto, foi discutida a complexidade do fenômeno da violência conjugal, bem como apresentadas algumas possibilidades de atuação policial, baseadas na segurança cidadã, que promovam discussões sobre a complexidade da violência conjugal e os processos culturais que a naturalizam. Entende-se, ainda, que estes serviços só podem ser oferecidos a partir da capacitação continuada dos/as policiais que atuam nas DMs.
PENGARUH CARA MENGAJAR GURU TERHADAP HASIL PRESTASI SISWA
Authors: Yuniarti Niar
Published: January 2021

The research departs from the belief that in addition to the teacher style in teaching the students, the teacher's learning style also affects the learning achievement students have gained. This research uses quantitative research. The research subject is 30 teachers of Madrasa in the Ministry of Religious Affairs who have followed a training. To support the research, questionnaire, interview, and observation were used as primary and secondary data. The results conclude that the teacher's learning style is much more visually compared to other styles of learning, the visual learning style focuses on vision. It shows that teacher learning styles have no correlation with the teacher's teaching style. In verificative analysis also gained the teacher's teaching style is lower to the student's learning outcomes.
TAREKAT DAN MODERASI BERAGAMA
Authors: Feriyanto Feriyanto
Published: January 2021

Tarekat Qadariyah Naqsabandiyah (TQN) is the research’s subject, due to the phenomenon of religious moderation among TQN practitioners. The research uses phenomenological method. The data are collected through participant observation, interviews, and literature review. Data analysis techniques are completed by reducing, presenting, and concluding. The results show that the practices; first, religious moderation’s form exists among practitioners of inclusive TQN and social solidarity. Second, internalized teachings of tanbih values are involving moderate attitude in religion, social protection, calm and peace in life. Third, tanbih teachings changes for the better and shows attitudes ranging from intolerance to tolerance, narrow thinking to wisdom and broadness, mutual respect, moderation in religion and among the practitioners even when they have different backgrounds. The role of “Guru Murshid” is the most important facet in maintaining religious moderation. Keyword: religious moderation; religious experience; tanbih; tarekat
MODERASI ISLAM INDONESIA DALAM MEDIA CETAK
Authors: Rohman Dudung Abdul
Published: January 2021

This research departs from the phenomenon of widespread acts of violence with religious nuances that often occur in Indonesia. A negative stigma is often addressed to the Muslim community. In this context, moderation narrative of Indonesian Islam published by the Ministry of Religion through the printed media Republika Newspaper is essential to reduce and counteract the issues of radicalism and religious terrorism. The results indicate that the media takes a role in constructing narrative news about the moderation conception of Indonesian Islam from the perspective of the Ministry of Religion, so that it becomes a presentation of information and public opinion. After being analyzed, the moderation conception of Indonesian Islam includes: (1) Islam rahmatan lil-alamin; (2) Islam that promotes openness, brotherhood, and benefit; (3) Islam which is based on tolerance, justice, and balance; (4) Islam which is comprehensively understood; (5) Islam which is not radical or extreme. Keywords: Discourse Analysis; Print media; Narrative of Islamic Moderation.
PERTANGGUNGJAWABAN PIDANA KORPORASI DALAM TINDAK PIDANA PENCUCIAN UANG PERSPEKTIF HUKUM ISLAM
Authors: Surasa Ais
Published: January 2021

This research aims to find out the conditions of corporate criminal liability in money laundering offences based on Islamic law perspective. This research uses library research methods. The results concluded that corporate criminal liability conditions are stipulated in Article 6 of Law No. 08 year 2010, which contains that a person with money laundering will be 4 years or more in prisoned. Islamic law states that one who commits it, will be punished in return towards the actions of “jarimah” perpetrators (as the elements fulfilled). Thus, the criminal liability is a person who can experience a shift and accept the concept of harm through determining corporate’s liability. It is because the will-have impact is greater than any crimes executed by individuals. As for the sanctions against corporations which committed money laundering are ta'zir (punishments). Keywords: Corporate Criminal Liability; Money Laundering; Islamic Law
The Volume-complete Sample of M Dwarfs with Masses 0.1 ≤ M/M⊙ ≤ 0.3 within 15 Parsecs
Authors: Winters Jennifer G. , Charbonneau David , Henry Todd J. , Irwin Jonathan M. , Jao Wei-Chun , Riedel Adric R. , Slatten Kenneth
Published: January 2021

M dwarfs with masses 0.1 ≤ M/M
⊙ ≤ 0.3 are under increasing scrutiny because these fully convective stars pose interesting astrophysical questions regarding their magnetic activity and angular momentum history. They also afford the most accessible near future opportunity to study the atmospheres of terrestrial planets. Because they are intrinsically low in luminosity, the identification of the nearest examples of these M dwarfs is essential for progress. We present the volume-complete, all-sky list of 512 M dwarfs with masses 0.1 ≤ M/M
⊙ ≤ 0.3 and with trigonometric distances placing them within 15 pc (π
trig ≥ 66.67 mas) from which we have created a sample of 413 M dwarfs for spectroscopic study. We present the mass function for these 512 M dwarfs, which increases with decreasing stellar mass in linear mass space, but is flat in logarithmic mass space. As part of this sample, we present new V
J
R
KC
I
KC photometry for 17 targets, measured as a result of the RECONS group’s long-term work at the CTIO/SMARTS 0.9 m telescope. We also note the details of targets that are known to be members of multiple systems and find a preliminary multiplicity rate of 21% ± 2% for the primary M dwarfs in our sample when considering known stellar and brown dwarf companions at all separations from their primaries. We further find that 43 ± 2% of all M dwarfs with masses 0.1 ≤ M/M
⊙ ≤ 0.3 are found in multiple systems with primary stars of all masses within 15 pc.
TARDIS. II. Synergistic Density Reconstruction from Lyα Forest and Spectroscopic Galaxy Surveys with Applications to Protoclusters and the Cosmic Web
Authors: Horowitz Benjamin , Zhang Benjamin , Lee Khee-Gan , Kooistra Robin
Published: January 2021

In this work, we expand upon the Tomographic Absorption Reconstruction and Density Inference Scheme (TARDIS) in order to include multiple tracers while reconstructing matter density fields at Cosmic Noon (z ∼ 2–3). In particular, we jointly reconstruct the underlying density field from simulated Lyα forest observations at z ∼ 2.5 and an overlapping galaxy survey. We find that these data are synergistic, with the Lyα forest providing reconstruction of low-density regions and galaxy surveys tracing the density peaks. We find a more accurate power spectra reconstruction going to higher scales when fitting these two data sets simultaneously than when using either one individually. When applied to cosmic web analysis, we find that performing the joint analysis is equivalent to an Lyα survey with significantly increased sight-line spacing. Because we reconstruct the velocity field and matter field jointly, we demonstrate the ability to evolve the mock observed volume further to z = 0, allowing us to create a rigorous definition of a “protocluster” as regions that will evolve into clusters. We apply our reconstructions to study protocluster structure and evolution, finding for realistic survey parameters that we can provide accurate mass estimates of the z ≈ 2 structures and their z = 0 fate.
Magnetic Helicity Signature and Its Role in Regulating Magnetic Energy Spectra and Proton Temperatures in the Solar Wind
Authors: Zhao G. Q. , Lin Y. , Wang X. Y. , Feng H. Q. , Wu D. J. , Li H. B. , Zhao A. , Liu Q.
Published: January 2021

In a previous paper, we found that perpendicular and parallel proton temperatures are clearly associated with the proton-scale turbulence in the solar wind, and magnetic helicity signature appears to be an important indicator in the association. Based on 15 yr of in situ measurements, the present paper further investigates the magnetic helicity of solar wind turbulence and its role in regulating magnetic energy spectra and proton temperatures. Results show that the presence of the helicity signature is very common in solar wind turbulence at scales

, with k being the wavenumber and ρ

p
the proton gyroradius. The sign of the helicity is mostly positive, indicating the dominance of right-handed polarization of the turbulence. The helicity magnitude usually increases with k and

(the proton parallel beta) when

and

are less than unity. As helicity magnitude increases, the power index of the energy spectrum becomes more negative, and the proton temperatures

and

rise significantly, where

and

are the perpendicular and parallel temperatures with respect to the background magnetic field. In particular, the rise of

is faster than

when

is satisfied. The faster rise of

with the helicity magnitude may be interpreted as the result of the preferentially perpendicular heating of solar wind protons by kinetic Alfvén wave turbulence.
ALMA Observation of SO2 Gas Originating from Io’s Volcanic Plume and Lava Areas
Authors: Koga Ryoichi , Suzuki Tatsuya , Tsuchiya Fuminori , Sakanoi Takeshi , Hirahara Yasuhiro
Published: January 2021

We detected the submillimeter spectrum of SO2 gas originating from volcanic plumes and lava areas in Jupiter’s moon Io by analyzing the ALMA archive data observed before and after ingress on 2018 March. As a result of synthesis imaging, high intensity regions of SO2 were found to be associated with the volcanically active areas around the Amaterasu Patera (305°W, 38°N) and around the Janus Patera (36°W, 4°S) and Kanehekili Fluctus (32°W, 17°S). By fitting the spectral lineshapes, the main and redshifted spectral components are identified around the Amaterasu Patera. The redshifted component can be attributed as the emission from the plume gas moving away in the line of sight. The rotational temperature and column density of SO2 were derived by employing the population diagram plots with spectral line intensities. The column densities of SO2 before ingress are (2.2 ± 1.1) × 1015 cm−2 around the Amaterasu Patera and (2.2 ± 1.1) × 1015 cm−2 around the Janus Patera. After ingress, the column densities are (1.8 ± 1.2) × 1015 cm−2 and (2.1 ± 0.1) × 1015 cm−2, respectively. This suggests that volcanic eruptions maintain the atmospheres in these regions during eclipse. The temperature around the Amaterasu Patera of 95 ± 28 K before ingress is similar to the temperature of 108 ± 48 K after ingress. On the other hand, the temperature around the Janus Patera increases from 151 ± 70 K before ingress to 311 ± 41 K after ingress. The result suggests that the atmospheric SO2 around the Janus Patera after ingress may be supplied by evaporation from the lava areas.
Use of Hydroxychloroquine and Risk of Heart Failure in Patients With Rheumatoid Arthritis
Authors: Sorour Ahmed A. , Kurmann Reto D. , Shahin Youssef E. , Crowson Cynthia S. , Achenbach Sara J. , Mankad Rekha , Myasoedova Elena
Published: January 2021

Objective.

To examine the relationship between the use of hydroxychloroquine (HCQ) and risk of developing heart failure (HF) in rheumatoid arthritis (RA).

Methods.

In this nested case-control study, cases were Olmsted County, Minnesota residents with incident RA (based on 1987 American College of Rheumatology criteria) from 1980 to 2013 who developed HF after RA incidence. Each case was matched on year of birth, sex, and year of RA incidence with an RA control who did not develop HF. Data on HCQ use including start and stop dates, as well as dose changes, were reviewed and used to calculate HCQ duration and cumulative dose. Age-adjusted logistic regression models were used to examine the association between HCQ and HF.

Results.

The study identified 143 RA cases diagnosed with HF (mean age 65.8 yrs, 62% females) and 143 non-HF RA controls (mean age 64.5, 62% female). HCQ cumulative dose was not associated with HF (OR 0.96 per 100-g increase in cumulative dose, 95% CI 0.90–1.03). Likewise, no association was found for patients with a cumulative dose ≥ 300 g (OR 0.92, 95% CI 0.41–2.08). The HCQ duration of intake in years prior to index was not associated with HF (OR 0.98, 95% CI 0.91–1.05).

Conclusion.

Use of HCQ was not associated with development of HF in patients with RA in this study. Further studies are needed to understand the effect of higher doses of HCQ on the development of HF in RA.
Simulation in Pediatrics: A Learning Lab for Education, Quality Improvement, and Patient Safety
Authors: Jani Priti , Wild Bridget M.
Published: January 2021

Simulation-based medical education is an experiential modality that has evolved over the last 60 years, amassing evidence as an efficacious tool for skill acquisition and care improvement. We review the underlying theory, core defining principles, and applications of medical simulation broadly and in pediatrics in hopes that it can be accessible to every pediatric clinician regardless of practice environment and resources. Any situation where there is risk of harm to a patient or clinician can be simulated for practice, reflection, and re-practice. Whether preparing for clinic-based emergencies, new hospital units, or new daily workflows, simulation is valuable to novice and master clinicians for individual and team care enhancement.

[
Pediatr Ann
. 2021;50(1):e13–e18.]
Advocating for Your Patients and Families: Simulation as an Educational Tool for Home Caregivers of Children with Chronic Conditions
Authors: Diaz Maria Carmen G. , Arnold Jennifer L.
Published: January 2021

Simulation-based education for home caregivers of children with chronic conditions provides hands-on training set in a safe, confidential, supportive learning environment that is founded on the principles of patient-and family-centered care. This type of education and approach has been favored over traditional educational methods and may also improve caregivers' comfort, confidence, knowledge, skills, and ability to manage their child's routine and emergent care at home. Pediatricians play a vital role in this type of education as an advocate for their patients and families and as key stakeholders and collaborators in the process. Open collaboration and information sharing among home caregivers, simulation experts, pediatricians, and the rest of the medical team can lead to the development and implementation of successful simulation curricula. This in turn has the potential to lead to improved patient safety, quality of care, and patient outcomes.

[
Pediatr Ann
. 2021;50(1):e39–e43.]
Complex dynamics of a SIRS epidemic model with the influence of hospital bed number
Authors: Xu Yancong , Wei Lijun , Jiang Xiaoyu , Zhu Zirui
Published: January 2021

In this paper, the nonlinear dynamics of a SIRS epidemic model with vertical transmission rate of neonates, nonlinear incidence rate and nonlinear recovery rate are investigated. We focus on the influence of public available resources (especially the number of hospital beds) on disease control and transmission. The existence and stability of equilibria are analyzed with the basic reproduction number as the threshold value. The conditions for the existence of transcritical bifurcation, Hopf bifurcation, saddle-node bifurcation, backward bifurcation and the normal form of Bogdanov-Takens bifurcation are obtained. In particular, the coexistence of limit cycle and homoclinic cycle, and the coexistence of stable limit cycle and unstable limit cycle are also obtained. This study indicates that maintaining enough number of hospital beds is very crucial to the control of the infectious diseases no matter whether the immunity loss population are involved or not. Finally, numerical simulations are also given to illustrate the theoretical results.
On the dimension of global attractor for the Cahn-Hilliard-Brinkman system with dynamic boundary conditions
Authors: Li Fang , You Bo
Published: January 2021

The objective of this paper is to study the fractal dimension of global attractor for the Cahn-Hilliard-Brinkman system with dynamic boundary conditions. Inspired by the idea of the \begin{document}$ \ell $\end{document}-trajectory method, we prove the existence of a finite dimensional global attractor in an auxiliary normed space for the Cahn-Hilliard-Brinkman system with dynamic boundary conditions and estimate the fractal dimension of the global attractor in the original phase space for this system by defining a Lipschitz mapping from the auxiliary normed space into the original phase space.
The multi-patch logistic equation
Authors: Elbetch Bilel , Benzekri Tounsia , Massart Daniel , Sari Tewfik
Published: January 2021

The paper considers a \begin{document}$ n $\end{document}-patch model with migration terms, where each patch follows a logistic law. First, we give some properties of the total equilibrium population. In some particular cases, we determine the conditions under which fragmentation and migration can lead to a total equilibrium population which might be greater or smaller than the sum of the \begin{document}$ n $\end{document} carrying capacities. Second, in the case of perfect mixing, i.e when the migration rate tends to infinity, the total population follows a logistic law with a carrying capacity which in general is different from the sum of the \begin{document}$ n $\end{document} carrying capacities. Finally, for the three-patch model we show numerically that the increase in number of patches from two to three gives a new behavior for the dynamics of the total equilibrium population as a function of the migration rate.
Macro‐financial volatility under dispersed information
Authors: Miao Jianjun , Wu Jieran , Young Eric R.
Published: January 2021

We provide a production‐based asset pricing model with dispersed information and small deviations from full rational expectations. In the model, aggregate output and equity prices depend on the higher‐order beliefs about aggregate demand and individual stochastic discount factors. We prove that equity price volatility becomes arbitrarily large as the volatility of idiosyncratic shocks diverges to infinity due to the interaction of signal extraction with idiosyncratic trading decisions, while aggregate output volatility falls. We propose a two‐step spectral factorization method that permits closed‐form solutions in the frequency domain applicable to a wide range of models with more hidden states than signals. Our model can quantitatively match output and equity volatilities observed in U.S. data.
A maximum likelihood approach to combining forecasts
Authors: Levy Gilat , Razin Ronny
Published: January 2021

We model an individual who wants to learn about a state of the world. The individual has a prior belief and has data that consist of multiple forecasts about the state of the world. Our key assumption is that the decision maker identifies explanations that could have generated this data and among these focuses on those that maximize the likelihood of observing the data. The decision maker then bases her final prediction about the state on one of these maximum likelihood explanations. We show that in all the maximum likelihood explanations, moderate forecasts are just statistical derivatives of extreme ones. Therefore, the decision maker will base her final prediction only on the information conveyed in the relatively extreme forecasts. We show that this approach to combining forecasts leads to a unique prediction, and a simple and dynamically consistent way to aggregate opinions.
Asymptotic synthesis of contingent claims with controlled risk in a sequence of discrete‐time markets
Authors: Kreps David M. , Schachermayer Walter
Published: January 2021

We examine the connection between discrete‐time models of financial markets and the celebrated Black–Scholes–Merton (BSM) continuous‐time model in which “markets are complete.” Suppose that (a) the probability law of a sequence of discrete‐time models converges to the law of the BSM model and (b) the largest possible one‐period step in the discrete‐time models converges to zero. We prove that, under these assumptions, every bounded and continuous contingent claim can be asymptotically synthesized, controlling for the risks taken in a manner that implies, for instance, that an expected‐utility‐maximizing consumer can asymptotically obtain as much utility in the (possibly incomplete) discrete‐time economies as she can at the continuous‐time limit. Hence, in economically significant ways, many discrete‐time models with frequent trading resemble the complete‐markets model of BSM.
Resistencia a la imposición de la clausura femenina en la Orden Militar de Santiago: el caso de doña Berenguela Bernal, comendadora de Santa Eufemia de Cozuelos en 1482
Authors: Ferrer-Vidal Díaz del Riguero María Soledad
Published: January 2021

Analizaremos en este estudio el proceso desencadenado por la resistencia de la comendadora de la comunidad santiaguista del convento castellano de Santa Eufemia de Cozuelos a aceptar los cambios reformistas que se pretenden imponer desde los órganos de gobierno de la Orden militar en su monasterio en 1482, fundamentalmente centrados en la clausura estricta, hasta entonces no existente, y en la eliminación del voto de castidad conyugal propio de esta Orden Militar, que se pretende sustituir por el de castidad absoluta y perpetua. De forma inexorable, la situación finalmente acaba con la imposición de la reforma, a costa de la destitución fulminante de la comendadora disidente, doña Berenguela Bernal y del nombramiento, claramente irregular, de otra, afín a los dictámenes maestrales.
Los milagros americanos de Ignacio de Loyola y la red de información transatlántica de los jesuitas
Authors: Greenwood Jonathan E.
Published: January 2021

Este artículo examina la red de información jesuita durante el generalato de Claudio Acquaviva (r. 1581-1615) en la Monarquía Hispánica. En particular, este estudio analiza la recolección y circulación de las series de milagros de Ignacio de Loyola (c. 1491- 1556), el fundador de la Compañía de Jesús. Sus milagros americanos, conocidos a través de cartas y luego adaptados para su inserción en las relaciones y biografías impresas del fundador, fueron fundamentales para el desarrollo de la reputación de santidad de Loyola. A través de una serie de casos sucedidos en Madrid, Pamplona, Bogotá y Lima, este artículo explora la difusión intercontinental de noticias y el reportaje de sucesos sobrenaturales.
Abogada e intercesora. Muerte y devoción mariana en el Buenos Aires tardocolonial (1750-1810)
Authors: Roca Facundo
Published: January 2021

El objetivo de este trabajo consiste en explorar las múltiples y variadas vinculaciones entre dos grandes tópicos de la religiosidad barroca: la preparación para la muerte y la devoción a la Virgen María. La invocación mariana en el momento de la muerte ha sido extensamente documentada, aunque desde un enfoque marcadamente cuantitativo. En este trabajo procuramos analizar el papel desempeñado por la Virgen María en el momento de la muerte, resituando esta particular devoción dentro del panorama religioso del Buenos Aires tardocolonial.
La coronación de Agustín I de México en los sermones religiosos impresos
Authors: Escrig Rosa Josep
Published: January 2021

Este artículo analiza los cuatro sermones publicados sobre la coronación del militar Agustín de Iturbide como emperador del Imperio mexicano, que tuvo lugar en la catedral metropolitana el 21 de julio de 1822. A través de dichos documentos se estudian los referentes político-culturales y religiosos que manejaron los autores eclesiásticos a la hora de legitimar al nuevo emperador y explicar el proceso que había llevado hasta su coronación. Las opiniones que sostuvieron permiten un acercamiento a las interpretaciones que realizaron sobre la independencia del país, así como al modelo de gobierno que idearon. También se observan las pretensiones de buscar un encaje privilegiado para la Iglesia en el Imperio, tratando de evitar tentativas regalistas.
German-language studies on Boulle marquetry conservation – a brief overview of traditions and innovations
Authors: Schwarz Roswitha
Published: January 2021

This article describes the development of Boulle marquetry conservation based on 80 German-language publications, case studies and treatment reports. It gives an overall idea of the approaches to conservation that have been applied since the early 1970s. From early, often inadequate repairs to scientifically-based conservation treatments, this evolution is characterized by an increasing desire to preserve the original material to the highest possible degree. Today, modern conservation methods allow the object’s aged condition to be presented without compromising its aesthetic requirements.
Le mobilier Boulle : étude de l’altération du laiton et de l’étain des marqueteries
Authors: Leroux Manuel , Bertholon Régis
Published: January 2021

L’étude de l’altération des marqueteries métalliques du mobilier Boulle a été menée en 2010 au C2RMF, préalablement à la restauration de trois meubles du musée du Louvre. Elle a permis de préciser les types d’altération des éléments en laiton et en étain en fonction de leur composition, de leur corrosion, des contraintes mécaniques et des restaurations antérieures. Le ternissement du laiton est le résultat des processus d’oxydation (cuprite) et de dézincification (zincite, couche de cuivre métallique), avec souvent présence d’atacamite. Le ternissement de l’étain correspond à la présence de cassitérite (SnO2). L’étain Boulle est un alliage spécifique étain-plomb-mercure utilisé pour l’obtention d’un effet miroir. L’ajout du mercure rend l’étain plus dur mais plus fragile ; le phénomène de craquelure qui en résulte est également décrit dans cet article.
Élaboration d’une nouvelle colle de poisson, Artcolle®
Authors: Elie-Lefebvre Delphine
Published: January 2021

La problématique majeure de la restauration des œuvres en marqueterie Boulle est le collage des marqueteries en laiton sur le bâti en bois. Une recherche a été entreprise en vue de trouver une colle permettant de répondre au cahier des charges.
La protection de surface pour les meubles en marqueterie de métal du musée du Louvre : étude d’un vernis, entre formulations anciennes et expérimentations actuelles
Authors: Balcar Nathalie , Leblanc Frédéric , Paulin Marc-André
Published: January 2021

La réflexion sur le remplacement du traditionnel vernis à la gomme-laque par une autre couche de finition a débuté en 2002 au C2RMF. Elle avait pour but de mettre en évidence les éventuelles relations entre dégradation et composition du vernis, d’évaluer le rôle de protection sur les bois de vernis de compositions différentes et enfin d’étudier l’influence de la lumière sur l’évolution dans le temps des bois ainsi vernis. L’expérimentation mise en œuvre s’est focalisée sur un vernis décrit dans L’Art du menuisier-ébéniste publié par André-Jacob Roubo en 1774. Plusieurs tests de mesure d’épaisseur, d’apparence et de propriété mécanique ont été réalisés sur des éprouvettes de bois de placage recouverts du vernis sélectionné. Les résultats encourageants de son effet protecteur à la photo-oxydation et à l’oxygène de l’air ont permis de mettre en place un protocole en vue de son application comme protection de surface pour le mobilier en marqueterie de métal du musée du Louvre.
Risk Factors for Acute Otitis Media in Primary School Children: A Case-Control Study in Central Java, Indonesia
Authors: Wijayanti Siwi Pramatama Mars , Wahyono Daniel Joko , Rejeki Dwi Sarwani Sri , Octaviana Devi , Mumpuni Aris , Darmawan Anton Budhi , Kusdaryanto Wahyu Dwi , Nawangtantri Gita , Safari Dodi
Published: January 2021

Background

Acute otitis media (AOM) is the most common disease in young children requiring antibiotic treatment. Information on AOM-related determinant risk factors in primary school children is still limited, particularly in Indonesia. This study aims to identify risk factors related to AOM in primary school children in Banyumas Regency, Central Java, Indonesia.

Design and methods

This is an analytical study with a casecontrol design in Banyumas Regency, Indonesia. 3574 children from 6 regions of the Banyumas Regency were recruited for the screening of AOM detection, and confirmation of AOM diagnosis was determined by Otolaryngologist. One hundred and twentyfive cases and 125 control were involved in this study. Data collection was carried out using a structured questionnaire focusing on several variables such as household cooking fuel, house environment, smoking exposure, knowledge of parents, and nutrition status. Univariate, bivariate using chi-square and multivariate with regression logistic was conducted for data analysis.

Results

This study highlights the risk of household firewood use (p=0.003), poor nutritional status (p=0.009), and a family history of ear infections (p=0.015) with an increased risk of otitis media.

Conclusions

Household firewood use, poor nutritional status and family history of ear infection are factors associated with the occurrence of acute otitis media. It is necessary to provide public health education to prevent exposure to fuel at risk for children and to improve their nutritional status.
Pulmonary Metastasectomy in Colorectal Cancer: A Population-Based Retrospective Cohort Study Using the Korean National Health Insurance Database
Authors: Yu Woo Sik , Bae Mi Kyung , Choi Jung Kyu , Hong Young Ki , Park In Kyu
Published: January 2021

Purpose The study aimed to investigate the current status and prognostic factors for overall survival in patients who had undergone pulmonary metastasectomy for colorectal cancer.Materials and Methods The data of 2,573 patients who had undergone pulmonary metastasectomy after surgery for colorectal cancer between January 2009 and December 2014 were extracted from the Korean National Health Insurance Service claims database. Patient-, colorectal cancer–, pulmonary metastasis–, and hospital-related factors were analyzed using the Kaplan-Meier method, log-rank test, and Cox proportional hazards analysis to identify prognostic factors for overall survival after pulmonary metastasectomy.Results The mean age of the patients was 60.9±10.5 years; 66.2% and 79.1% of the participants were male and had distally located colorectal cancer, respectively. Wedge resection (71.7%) was the most frequent extent of pulmonary resection; 21.8% of the patients underwent repeated pulmonary metastasectomies; 73% of pulmonary metastasectomy cases were performed in tertiary hospitals; 53.9% of patients were treated in Seoul area; 82% of patients received chemotherapy in conjunction with pulmonary metastasectomy. The median survival duration was 51.8 months. The 3- and 5-year overall survival rates were 67.7% and 39.4%, respectively. In multivariate analysis, female sex, distally located colorectal cancer, pulmonary metastasectomy-only treatment, and high hospital volume (> 10 pulmonary metastasectomy cases/yr) were positive prognostic factors for survival.Conclusion Pulmonary metastasectomy seemed to provide long-term survival of patients with colorectal cancer. The female sex, presence of distally located colorectal cancer, and performance of pulmonary metastasectomy in high-volume centers were positive prognostic factors for survival.
Mechanism of nitrogen-fluoride co-doped TiO2/bentonite composites removing tetracycline: A study in the co-doping ratio
Authors: WANG Teng , MENG Zhaofu , WANG Xinxin , ALI Amjad , CAO Xuewen , LIU Lin
Published: January 2021

N-doped and N-F co-doped TiO2/bentonite composites were synthesized via the gel-sol method. The morphology, structure and surface charge of the composite before and after adsorption were used to determine the effect N/F doping ratio on TC removal. The results showed that, compared with undoped samples, the TC adsorption on N doped composites was reduced by 24.44% on average. N-F co-doping significantly increased the TC adsorption when the Ti-N-F molar ratio was 1:1: 0.01, reaching a maximum TC adsorption of 64.00 mmol·kg-1. The coverage of the N doped TiO2 increases as the N doping ratio increases; the specific surface area increased by 2.03 % on average, but the number of surface negative charges decreased by 36.24 % on average. FT-IR results confirmed that N doping reduced the number of -OH groups on the N-doped composites. Additionally, fluorination of N-F co-doped TiO2 and bentonite surfaces inhibits hydrogen bonding and π-π interactions between the TC and the composites. As the N doping ratio increased, the coverage of N-F co-doped TiO2 on the composite surface increased, resulting in the TC adsorption decrease with the increases N doping ratio.