cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The effect of milk type and fortification on the growth of low-birthweight infants: An umbrella review of systematic reviews and meta-analyses
Creators: name: Vesel, L.
name: Delaney, M.M.
name: Bose, C.
name: Semrau, K.
name: Adair, L.
name: North, K.
name: Lee, A.C.C.
Publisher: name: Blackwell Publishing Ltd
Year: 2021

description: Approximately 15% of infants worldwide are born with low birthweight (<2500 g). These children are at risk for growth failure. The aim of this umbrella review is to assess the relationship between infant milk type, fortification and growth in low-birthweight infants, with particular focus on low- and lower middle–income countries. We conducted a systematic review in PubMed, CINAHL, Embase and Web of Science comparing infant milk options and growth, grading the strength of evidence based on standard umbrella review criteria. Twenty-six systematic reviews qualified for inclusion. They predominantly focused on infants with very low birthweight (<1500 g) in high-income countries. We found the strongest evidence for (1) the addition of energy and protein fortification to human milk (donor or mother's milk) leading to increased weight gain (mean difference [MD] 1.81 g/kg/day; 95% confidence interval [CI] 1.23, 2.40), linear growth (MD 0.18 cm/week; 95% CI 0.10, 0.26) and head growth (MD 0.08 cm/week; 95% CI 0.04, 0.12) and (2) formula compared with donor human milk leading to increased weight gain (MD 2.51 g/kg/day; 95% CI 1.93, 3.08), linear growth (MD 1.21 mm/week; 95% CI 0.77, 1.65) and head growth (MD 0.85 mm/week; 95% CI 0.47, 1.23). We also found evidence of improved growth when protein is added to both human milk and formula. Fat supplementation did not seem to affect growth. More research is needed for infants with birthweight 1500–2500 g in low- and lower middle–income countries.
Examples of K-unstable Fano manifolds
Creators: name: Delcroix, Thibaut
Publisher: name: arXiv
Year: 2019
Subjects: subject: Differential Geometry (math.DG)
subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics

description: We examine various examples of horosymmetric manifolds which exhibit interesting properties with respect to canonical metrics. In particular, we determine when the blow-up of a quadric along a linear subquadric admits Kähler-Einstein metrics, providing infinitely many examples of manifolds with no Kähler-Ricci solitons that are not K-semistable. Using a different construction, we provide an infinite family of Fano manifolds with no Kähler-Einstein metrics but which admit coupled Kähler-Einstein metrics. Finally, we elaborate on the relationship between Kähler-Ricci solitons and the more general concept of multiplier Hermitian structures and illustrate this with examples related to the two previous families.
description: accepted version. To appear at Annales de l'Institut Fourier
title: Αυτοματοποιημένες διαδικασίες και προγραμματιστικοί αλγόριθμοι στις τρισδιάστατες πλατφόρμες σχεδίασης
title: Automated processes and programming algorithms in 3D design platforms
titleType: AlternativeTitle
Creators: name: Χατζησταμάτη, Ελένη
Publisher: name: Πανεπιστήμιο Δυτικής Αττικής
Year: 2022
Subjects: Παραμετρική σχεδίαση
Προγραμματιστικοί αλγόριθμοι
Αυτοματοποίηση
CAD
AutoCAD
Inventor,
AutoLISP
iLogic

description: Στην παρούσα εργασία με τίτλο «Αυτοματοποιημένες Διαδικασίες και Προγραμματιστικοί Αλγόριθμοι στις Τρισδιάστατες Πλατφόρμες Σχεδίασης» γίνεται εξονυχιστική μελέτη του θεωρητικού υπόβαθρου που υποστηρίζει την διαδικασία της σχεδίασης με χρήση υπολογιστή, καθώς επίσης και η πρακτική εφαρμογή της θεωρίας στην ανάπτυξη ενός συγκεκριμένου γεννήτορα σχεδίου αντικειμένου. Οι θεωρητικές ενότητες που θα καλυφθούν παρακάτω είναι αυτές της έννοιας της σχεδίασης, των διαφόρων προγραμμάτων σχεδίασης με χρήση υπολογιστή, κάποιων τεχνικών αυτοματοποίησης της διαδικασίας τόσο σε δισδιάστατες πλατφόρμες σχεδίασης, όσο και σε τρισδιάστατες και τέλος, αυτή των προγραμματιστικών αλγορίθμων στη σχεδίαση προϊόντων. Στη συνέχεια, ακολουθεί η ανάπτυξη ενός Headset εικονικής πραγματικότητας για κινητά, με τρόπο τέτοιο που θα προσφέρει στο χρήστη τη δυνατότητα για εύκολη και γρήγορη τροποποίηση των σχεδίων και του τελικού μοντέλου για την προσαρμογή του προϊόντος σε συγκεκριμένες συνθήκες. Μέσα στην εργασία αναπτύσσεται λεπτομερώς η διαδικασία από την σύλληψη της ιδέας για το προϊόντος, έως και την τελική του μορφή. Η εργασία καταλήγει στην εξαγωγή συμπερασμάτων και την επισύναψη παρατηρήσεων για τα δυνατά σημεία του προϊόντος, τις αδυναμίες του, τις απειλές που ενδέχεται να αντιμετωπίσει, όπως και τις αλλαγές, οι οποίες θα μπορούσαν να υλοποιηθούν στο μέλλον για τη βελτίωσή του.
Augmentations and ruling polynomials for Legendrian graphs
Creators: name: An, Byung Hee
name: Bae, Youngjin
name: Su, Tao
Publisher: name: arXiv
Year: 2019
Subjects: subject: Symplectic Geometry (math.SG)
subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: Primary: 57R17, Secondary: 57M15, 05C31

description: In this article, associated to a (bordered) Legendrian graph, we study and show the equivalence between two Legendrian isotopy invariants: augmentation number via point-counting over a finite field, for the augmentation variety of the associated Chekanov-Eliashberg differential graded algebra, and ruling polynomial via combinatorics of the decompositions of the associated front projection.
description: 67 pages
title: Pertinenz durch die Hintertür? : Online-Rechercheguides als Instrumente der Nutzerberatung im Landesarchiv Hessen
Creators: name: Motz, Dominik
Publisher: name: Philipps-Universität Marburg
Year: 2019
Subjects: Archivkunde
Archivnutzung
Archiv
Library and information sciences
Bibliotheks- und Informationswissenschaft
Online-Recherche
Archivbenutzung

description: Die Nutzer befragen bei der Suche nach für sie relevanten Quellen die Online-Rechercheportale der Archive und bewegen sich völlig autonom durch das vorgefertigte Angebot. Damit gehen zahlreiche Schwierigkeiten einher. So finden die Nutzer angesichts des für sie ungewohnten Provenienzprinzips oft nicht die Informationen, die sie benötigen, oder sie scheitern am Aufbau der Archive und verfügen nicht über die notwendigen Kenntnisse in Verwaltungsgeschichte und Paläographie. Von Seiten der (deutschen) Archive hat man die Probleme, die sich aus dem veränderten Nutzerverhalten ergeben, erkannt. Doch wurde bisher nur von einer Minderheit darauf reagiert. - (Transferarbeit des 50. wissenschaftlichen Lehrgangs an der Archivschule Marburg)
title: Von der Mission zur Vision : Das betriebswirtschaftliche Konzept des Vision-Statements und Wege zu seiner Implementierung beim Hessischen Landesarchiv
Creators: name: Quadflieg, Peter
Publisher: name: Philipps-Universität Marburg
Year: 2019
Subjects: Archivmanagement
Archiv
Library and information sciences
Bibliotheks- und Informationswissenschaft
Vision-Statement
Archivkunde

description: Seit der Gründung des Hessischen Landesarchivs (HLA) im Jahr 2013 implementiert die Leitungsebene eine umfassende strategische Steuerung der nun unter einem Dach zusammengefassten hessischen Staatsarchive. Als ein Handlungsfeld wurde dabei die Stärkung der Corporate Identity (CI) des HLA identifiziert, die auf ein eindeutig strukturiertes und einheitliches Selbstverständnis des Landesarchivs sowohl organisationsintern als auch in der Außendarstellung abzielt. Als Baustein zur Stärkung der CI wurde als eine konkrete Maßnahme die Formulierung eines überfachlichen Leitbildes beschlossen, für deren Verwirklichung die Formulierung einer Zukunfts-Vision eine wichtige Vorarbeit darstellt. Um diesen Prozess zu gestalten, wurde dem Verfasser als Transferprojekt der Auftrag erteilt, auf Grundlage des betriebswirtschaftlichen Forschungsstandes Vor- und Nachteile eines Vision-Statements im Rahmen der überfachlichen Leitbildentwicklung zu bewerten, anhand dieser Bewertung die Visions-Formulierung zu operationalisieren und schließlich als Moderator zu planen und zu begleiten. - (Transferarbeit des 50. wissenschaftlichen Lehrgangs an der Archivschule Marburg)
The existence of a transverse universal knot
Creators: name: Rodríguez-Viorato, Jesús
Publisher: name: arXiv
Year: 2020
Subjects: subject: Geometric Topology (math.GT)
subject: FOS: Mathematics

description: We prove that there is a knot $K$ transverse to $ξ_{std}$, the tight contact structure of $S^3$, such that every contact 3-manifold $(M, ξ)$ can be obtained as a contact covering branched along $K$. By contact covering we mean a map $φ: M \to S^3$ branched along $K$ such that $ξ$ is contact isotopic to the lifting of $ξ_{std}$ under $φ$.
description: 36 pages, 22 figures To appear on Algebraic and Geometric Topology
Patterns of Growth in Childhood in Relation to Adult Schooling Attainment and Intelligence Quotient in 6 Birth Cohorts in Low- and Middle-Income Countries: Evidence from the Consortium of Health-Oriented Research in Transitioning Societies (COHORTS)
Creators: name: Norris, S.A.
name: Bhargava, S.K.
name: Victora, C.G.
name: Sachdev, H.S.
name: Stein, A.D.
name: Wehrmeister, F.C.
name: COHORTS Group
name: Poveda, N.E.
name: Mazariegos, M.
name: Hartwig, F.P.
name: Adair, L.S.
name: Martorell, R.
name: Richter, L.M.
name: Lee, N.R.
name: Menezes, A.M.B.
name: Barros, F.C.
name: Stein, A.
name: Horta, B.L.
Publisher: name: NLM (Medline)
Year: 2021

description: BACKGROUND: Growth faltering has been associated with poor intellectual performance. The relative strengths of associations between growth in early and in later childhood remain underexplored. OBJECTIVES: We examined the association between growth in childhood and adult human capital in 5 low- and middle-income countries (LMICs). METHODS: We analyzed data from 9503 participants in 6 prospective birth cohorts from 5 LMICs (Brazil, Guatemala, India, the Philippines, and South Africa). We used linear and quasi-Poisson regression models to assess the associations between measures of height and relative weight at 4 age intervals [birth, age ∼2 y, midchildhood (MC), adulthood] and 2 dimensions of adult human capital [schooling attainment and Intelligence Quotient (IQ)]. RESULTS: Meta-analysis of site- and sex-specific estimates showed statistically significant associations between size at birth and height at ∼2 y and the 2 outcomes (P < 0.001). Weight and length at birth and linear growth from birth to ∼2 y of age (1 z-score difference) were positively associated with schooling attainment (β: 0.13; 95% CI: 0.08, 0.19, β: 0.17; 95% CI: 0.07, 0.32, and β: 0.25, 95% CI: 0.10, 0.40, respectively) and adult IQ (β: 0.74, 95% CI: 0.35, 1.14, β: 0.73, 95% CI: 0.35, 1.10, and β: 1.52, 95% CI: 0.96, 2.08, respectively). Linear growth from age 2 y to MC and from MC to adulthood was not associated with higher school attainment or IQ. Change in relative weight in early childhood, MC, and adulthood was not associated with either outcome. CONCLUSIONS: Linear growth in the first 1000 d is a predictor of schooling attainment and IQ in adulthood in LMICs. Linear growth in later periods was not associated with either of these outcomes. Changes in relative weight across the life course were not associated with schooling and IQ in adulthood.
Η γερμανική στρατηγική σκέψη από τον Μόλτκε τον πρεσβύτερο (1800-1891) έως το 1919 και η αλλαγή στον χαρακτήρα του πολέμου
Creators: name: Πανόπουλος, Ιωάννης
Publisher: name: Πανεπιστήμιο Πελοποννήσου
Year: 2022
Subjects: subject: Στρατιωτικός σχεδιασμός -- Γερμανία -- Ιστορία -- 19ος αιώνας
subject: Στρατιωτικός σχεδιασμός -- Γερμανία -- Ιστορία -- 20ος αιώνας
subject: Moltke, Helmuth von, 1848-1916
subject: Σχέδιο Σλήφεν
subject: Παγκόσμιος Πόλεμος, 1914-1918 -- Γερμανία
subject: Στρατηγική
subject: Γερμανία -- Στρατηγικές απόψεις
subject: Γερμανία -- Ιστορία, Στρατιωτική
subject: Α΄ Παγκόσμιος Πόλεμος
subject: Μόλτκε ο πρεσβύτερος
subject: Σχέδιο Σλήφεν
subject: Μεταβαλλόμενη μορφή του Πολέμου
subject: Συνθήκη Βερσαλλιών
subject: World War I
subject: Moltke the Elder
subject: Schlieffen Plan
subject: Changing face of the War
subject: Versailles Treaty

description: Ο A΄ Παγκόσμιος Πόλεμος απετέλεσε την αρχή του τέλους της παγκόσμιας κυριαρχίας της Ευρώπης, αποτέλεσμα μιας σειράς εσφαλμένων πολιτικών και στρατιωτικών εκτιμήσεων. Οι τεχνολογίες που αναπτύχθηκαν κατά τη διάρκεια του πολέμου με κυριότερες τα τεθωρακισμένα και την αεροπορία θα αποτελούσαν τη βάση για τη βελτίωση της επιχειρησιακής τέχνης αλλά και της αποτελεσματικότητας των στρατών ανά την υφήλιο. Το φάντασμα της μορφής του A΄ Παγκοσμίου Πολέμου και ο αντίκτυπός του στην κοινωνία, οδήγησε τις στρατιωτικές ηγεσίες να αναζητήσουν μεθόδους άμεσης διάρρηξης του μετώπου με αιχμή του δόρατος τις δύο ανωτέρω τεχνολογίες, κάτι που οδήγησε στη γέννηση του σύγχρονου τρόπου μάχεσθαι.
title: Überlieferungsprofil für nichtamtliches Archivgut im Niedersächsischen Landesarchiv : Überlegungen und Empfehlungen für die archivische Praxis
Creators: name: Schlöder, Christian
Publisher: name: Philipps-Universität Marburg
Year: 2019
Subjects: Archivkunde
Bewertung
nichtamtliches Schriftgut
Library and information sciences
Bibliotheks- und Informationswissenschaft
Überlieferungsbildung
Archiv

description: Seit Ende der 1990er Jahre werden für die amtliche Überlieferungsbildung in vielen staatlichen Archiven Bewertungs- und Archivierungsmodelle eingesetzt. Ergänzende Überlieferungs- bzw. Sammlungsprofile für den nichtamtlichen Bereich liegen dagegen nur von wenigen Archiven vor. Anders als bei Unterlagen von anbietungspflichtigen Stellen haben Archivare bei nichtamtlichen Unterlagen aus den folgenden Gründen einen größeren Entscheidungsspielraum in ihrer Bewertungsentscheidung: 1. Aufbewahrungsfristen und rechtliche Vorschriften für eine Übernahme bestehen nicht. 2. Die Zahl der möglichen Provenienzen ist unbegrenzt. 3. Die angebotenen Unterlagen sind deutlich weniger gleichförmig als Behördenakten. 4. Mehrere Archive können um dieselben Unterlagen konkurrieren. Die Herausforderung besteht darin, für den nichtamtlichen Bereich ein Konzept zu entwickeln, das ähnlich wie die Modelle für amtliche Stellen eine transparente, rationelle sowie möglichst objektive und einheitliche Überlieferungsbildung zu gewährleisten hilft. Ziel dieser Arbeit ist es, Vorschläge für ein solches Überlieferungskonzept im Niedersächsischen Landesarchiv (NLA) zu entwickeln. - (Transferarbeit des 50. wissenschaftlichen Lehrgangs an der Archivschule Marburg)
Insight into the melt processed Polylimonene oxide/Polylactic acid blends
Creators: name: Palenzuel, Miguel
name: Vega, Juan F.
name: Souza-Egipsy, Virginia
name: Ramos, Javier
name: Rentero, Christian
name: Valentina, Sessini
name: Mosquera, Marta E. G.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: In this work, the polymerization of limonene oxide (LO) has been optimized at room temperature with two different aluminium-based catalysts [AlMeX{2,6-(CHPh$_2$)$_2$-4-tBu-C$_6$H$_2$O}] (X = Me (1), Cl (2)). A fully bio-based ether, polylimonene oxide (PLO), has been synthesized with low molecular weight and good thermal stability, being a potential sustainable polymeric additive for other bio-based and biodegradable polymers such as polylactic acid (PLA). Hence, we have explored its ability to influence the thermal, mechanical and morphological properties of PLA by preparing their blends by melt processing. The addition of a low amount of PLO led to a nearly 10 $^\circ$C decrease in the PLA glass transition temperature. Moreover, a decrease in the PLA melting temperature and the degree of crystallinity was observed. Interestingly, a remarkable increase in the flexibility of PLA-based films was noticed. All the results point to the existence of strong interactions between the components, suggesting their partial miscibility.
description: Polymer Chemistry (2023)
Milnor's concordance invariants for knots on surfaces
Creators: name: Chrisman, Micah
Publisher: name: arXiv
Year: 2020
Subjects: subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 57K10, 57K12, 57K45

description: Milnor's $\barμ$-invariants of links in the $3$-sphere $S^3$ vanish on any link concordant to a boundary link. In particular, they are trivial on any knot in $S^3$. Here we consider knots in thickened surfaces $Σ\times [0,1]$, where $Σ$ is closed and oriented. We construct new concordance invariants by adapting the Chen-Milnor theory of links in $S^3$ to an extension of the group of a virtual knot. A key ingredient is the Bar-Natan $\textit{Zh}$ map, which allows for a geometric interpretation of the group extension. The group extension itself was originally defined by Silver-Williams. Our extended $\barμ$-invariants obstruct concordance to homologically trivial knots in thickened surfaces. We use them to give new examples of non-slice virtual knots having trivial Rasmussen invariant, graded genus, affine index (or writhe) polynomial, and generalized Alexander polynomial. Furthermore, we complete the slice status classification of all virtual knots up to five classical crossings and reduce to four (out of 92800) the number of virtual knots up to six classical crossings having unknown slice status. Our main application is to Turaev's concordance group $\mathscr{VC}$ of long knots on surfaces. Boden and Nagel proved that the concordance group $\mathscr{C}$ of classical knots in $S^3$ embeds into the center of $\mathscr{VC}$. In contrast to the classical knot concordance group, we show $\mathscr{VC}$ is not abelian; answering a question posed by Turaev.
description: v1: 42 pages, 37 figures, 6 tables. v2: This version incorporates suggestions of the referees and corrects minor typos. To appear in Algebraic & Geometric Topology
title: Bewertung von Hybridakten am Beispiel des Sächsischen Staatsministeriums für Umwelt und Landwirtschaft (SMUL)
Creators: name: Steigerwald, Jelena
Publisher: name: Philipps-Universität Marburg
Year: 2019
Subjects: Hybridakten
Archiv
Library and information sciences
Bibliotheks- und Informationswissenschaft
Archivkunde
Archivische Bewertung

description: Die Transferarbeit analysiert die Sachakten des Sächsischen Staatsministeriums für Umwelt und Landwirtschaft innerhalb des elektronischen Vorgangsbearbeitungssystems auf ihre hybriden Bestandteile, um Bewertungsvorschläge zu erarbeiten. Dafür wurden die Metadaten des VBS VIS.SAX für den Zeitraum 2006 bis 2014 und 50 Stichproben ausgewertet, Gespräche geführt sowie verwaltungsinterne Vorschriften und Quellen herangezogen. Im Ergebnis konnten drei Hybridaktentypen erkannt werden: Erstens die E-Akte mit Restpapierbestandteil aufgrund von nicht scanbaren Bestandteilen, zweitens die führende Papierakte mit elektronischen Datenträgern sowie drittens die unvollständige führende Papierakte in Kombination mit unvollständiger E-Akte. Weiterhin existieren parallele Akten und E-Akten. Als problematisch erwies sich die Erkennung von Hybridakten, weshalb keine Quantifizierung vorgenommen werden konnte. Die Bewertungsempfehlung enthält deswegen einen Vorschlag zur Überarbeitung der Metadaten und wägt die verschiedenen Möglichkeiten bei der Übernahme von E-Akten, Papier- und/oder Hybridakten gegeneinander ab. - (Transferarbeit des 50. wissenschaftlichen Lehrgangs an der Archivschule Marburg)
Assimilation of GNSS Zenith Delays and Tropospheric Gradients: A Sensitivity Study utilizing sparse and dense station networks
Creators: name: Thundathil, Rohith
name: Zus, Florian
name: Dick, Galina
name: Wickert, Jens
Publisher: name: Zenodo
Year: 2024

description: Manuscript Submitted to:       Geophysical Research Letters

Manuscript title:                     Assimilation of GNSS Zenith Delays and Tropospheric Gradients: A Sensitivity Study utilizing sparse and dense station networks

Authors:                                   Rohith Thundathil, Florian Zus, Galina Dick, Jens Wickert

Corresponding author:            Dr Rohith Muraleedharan Thundathil

Affiliation:                               Technische Universität Berlin, Germany; German Research Centre for Geosciences GFZ Potsdam, Germany

Email:                                      r.thundathil@tu-berlin.de

 

List of contents in the digital repository:

 

1) WRFDAV4.4.1_GRADIENT_OPERATOR.tar

The Weather Research and Forecasting model codes are in plain text format, which can be opened in any text reader. The model version is 4.4.1, and it includes the tropospheric gradient operator, which was added as an upgrade to the existing ZTD operator in WRF.

 

2) GOP_Control_Run_May_June_2013.tar.gz

The DA simulation has 12-hour WRF outputs for May and June 2013. The control run is a conventional data-assimilated run.

 

3) GOP_Impact_Run_May_June_2013.tar.gz

Control plus ZTD data assimilated 12-hourly WRF outputs for May and June 2013. GNSS data assimilation carried out from a dense network (0.5 degree).

 

4) GOP_Impact_Gradient_Run_May_June_2013.tar.gz

Control plus ZTD plus gradient data assimilated 12-hourly WRF outputs for May and June 2013. GNSS data assimilation carried out from a dense network (0.5 degree).

 

5) GOP_1_0_Impact_Run_May_June_2013.tar.gz

Control plus ZTD data assimilated 12-hourly WRF outputs for May and June 2013. GNSS data assimilation carried out from a sparse network (1.0 degree).

 

6) GOP_1_0_Impact_Gradient_Run_May_June_2013.tar.gz

Control plus ZTD plus gradient data assimilated 12-hourly WRF outputs for May and June 2013. GNSS data assimilation carried out from a sparse network (1.0 degree).
Special eccentricities of rational four-dimensional ellipsoids
Creators: name: Cristofaro-Gardiner, Dan
Publisher: name: arXiv
Year: 2020
Subjects: subject: Symplectic Geometry (math.SG)
subject: FOS: Mathematics

description: A striking result of McDuff and Schlenk asserts that in determining when a four-dimensional symplectic ellipsoid can be symplectically embedded into a four-dimensional symplectic ball, the answer is governed by an "infinite staircase" determined by the odd-index Fibonacci numbers and the Golden Mean. Here we study embeddings of one four-dimensional symplectic ellipsoid into another, and we show that if the target is rational, then the infinite staircase phenomenon found by McDuff and Schlenk is quite rare. Specifically, in the rational case, there is an infinite staircase in precisely three cases -- when the target has "eccentricity" 1, 2, or 3/2; in all other cases the answer is given by the classical volume obstruction except on finitely many compact intervals on which it is linear. This verifies in the special case of ellipsoids a conjecture by Holm, Mandini, Pires, and the author.
description: 26 pages, 1 figure
title: Chats – Foren – FAQs : Überlegungen zur Online-Nutzung im Hessischen Landesarchiv
Creators: name: Tripp, Sebastian
Publisher: name: Philipps-Universität Marburg
Year: 2019
Subjects: Online-Nutzung
Archiv
Archivkunde
Archivnutzung
Library and information sciences
Bibliotheks- und Informationswissenschaft

description: Die „Digitalisierung der Archivare“ steht im Zentrum dieser Transferarbeit: Wie kann das archivarische Know-how, das den Nutzern in den Lesesälen gerne und bereitwillig zur Beratung angeboten wird, auch im virtuellen Lesesaal zur Verfügung gestellt werden? In einem ersten Kapitel werden verschiedene Werkzeuge für die Beratung von Nutzern im Internet vorgestellt, die bereits von Archiven oder auch im bibliothekarischen Bereich eingesetzt und erprobt wurden. Im darauffolgenden Kapitel werden Überlegungen dazu angestellt, inwiefern diese Instrumente im Hessischen Landesarchiv zum Einsatz kommen könnten und was dabei zu beachten ist. Im letzten Kapitel schließlich werden die vorgestellten Beratungswerkzeuge auf ihr Verhältnis von Kosten und Nutzen untersucht und miteinander verglichen. Im Fazit werden schließlich Empfehlungen für die Einführung digitaler Beratungswerkzeuge gegeben. - (Transferarbeit des 50. wissenschaftlichen Lehrgangs an der Archivschule Marburg)
First-return maps of Birkhoff sections of the geodesic flow
Creators: name: Marty, Théo
Publisher: name: arXiv
Year: 2020
Subjects: subject: Geometric Topology (math.GT)
subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: This paper compares different pseudo-Anosov maps coming from different Birkhoff sections of a given flow. More precisely, given a hyperbolic surface and a collection of periodic geodesics on it, we study those Birkhoff sections for the geodesic flow on the unit bundle to the surface bounded by the collection. We show that there is a canonical identification of all those surfaces, and that the first-return maps induced by the flow can all be expressed as a composition of negative Dehn twists along the same family of curves: only the order depends on the choice of a particular surface.
Generating the local oscillator "locally" in continuous-variable quantum key distribution based on coherent detection
Creators: name: Qi, Bing
name: Lougovski, Pavel
name: Pooser, Raphael
name: Grice, Warren
name: Bobrek, Miljko
Publisher: name: arXiv
Year: 2015
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Continuous-variable quantum key distribution (CV-QKD) protocols based on coherent detection have been studied extensively in both theory and experiment. In all the existing implementations of CV-QKD, both the quantum signal and the local oscillator (LO) are generated from the same laser and propagate through the insecure quantum channel. This arrangement may open security loopholes and also limit the potential applications of CV-QKD. In this paper, we propose and demonstrate a pilot-aided feedforward data recovery scheme which enables reliable coherent detection using a "locally" generated LO. Using two independent commercial laser sources and a spool of 25 km optical fiber, we construct a coherent communication system. The variance of the phase noise introduced by the proposed scheme is measured to be 0.04 (rad^2), which is small enough to enable secure key distribution. This technology also opens the door for other quantum communication protocols, such as the recently proposed measurement-device-independent (MDI) CV-QKD where independent light sources are employed by different users.
description: 11 pages, 10 figures
Evolutionary life history theory as an organising framework for cohort studies: insights from the Cebu Longitudinal Health and Nutrition Survey
Creators: name: Rutherford, J.N.
name: Duazo, P.L.
name: Quinn, E.A.
name: Rosenbaum, S.
name: Lee, N.R.
name: Bechayda, S.A.
name: Carba, D.B.
name: Eisenberg, D.T.A.
name: Ryan, C.P.
name: Gettler, L.T.
name: Borja, J.R.B.
name: Georgiev, A.V.
name: Adair, L.
name: McDade, T.W.
name: Kuzawa, C.W.
Publisher: name: Taylor and Francis Ltd
Year: 2020

description: By tracking a group of individuals through time, cohort studies provide fundamental insights into the developmental time course and causes of health and disease. Evolutionary life history theory seeks to explain patterns of growth, development, reproduction and senescence, and inspires a range of hypotheses that are testable using the longitudinal data from cohort studies. Here we review two decades of life history theory-motivated work conducted in collaboration with the Cebu Longitudinal Health and Nutrition Survey (CLHNS), a birth cohort study that enrolled more than 3000 pregnant women in the Philippines in 1983 and has since followed these women, their offspring and grandoffspring. This work has provided evidence that reproduction carries “costs” to cellular maintenance functions, potentially speeding senescence, and revealed an unusual form of genetic plasticity in which the length of telomeres inherited across generations is influenced by reproductive timing in paternal ancestors. Men in Cebu experience hormonal and behavioural changes in conjunction with changes in relationship and fatherhood status that are consistent with predictions based upon other species that practice bi-parental care. The theoretical expectation that early life cues of mortality or environmental unpredictability will motivate a “fast” life history strategy are confirmed for behavioural components of reproductive decision making, but not for maturational tempo, while our work points to a broader capacity for early life developmental calibration of systems like immunity, reproductive biology and metabolism. Our CLHNS findings illustrate the power of life history theory as an integrative, lifecourse framework to guide longitudinal studies of human populations.
title: Wenige Ressourcen, starker Service: Wie Websites Archive entlasten können
Creators: name: Willkommen, Alexandra
Publisher: name: Philipps-Universität Marburg
Year: 2019
Subjects: Website
Archivkunde
Archiv
Archivbenutzung
Öffentlichkeitsarbeit
Library and information sciences
Bibliotheks- und Informationswissenschaft

description: Am Beispiel der Website des Niedersächsischen Landesarchivs (NLA), das einen Ausbau der Online-Benutzer- und Behördenberatung beabsichtigt, werden Maßnahmen für eine ressourcenschonende Erweiterung des bestehenden Angebots aufgezeigt. Auf eine Beschreibung der derzeitigen niedersächsischen Angebote für Benutzer und Behörden folgt eine vergleichende Analyse der Homepages der Landesarchivverwaltungen von Baden-Württemberg, Hamburg, Hessen, Nordrhein-Westfalen und Sachsen und daran anknüpfend die Auswertung einer Umfrage unter deren Mitarbeitern, die für die inhaltliche Pflege der Website sowie für die Bearbeitung von Behörden- und Benutzeranfragen zuständig sind. Basierend auf den Ergebnissen einer darauffolgenden SWOT-Analyse der NLA-Website und damit der Untersuchung der Stärken und Schwächen sowie Chancen und Risiken führen die Kapitel zu inhaltlichen und konzeptionellen Anregungen wie auch Überlegungen zu den Möglichkeiten und Grenzen einer Benutzer- und Behördenberatung die Ergebnisse der vorliegenden Studie zu-sammen. In die Analyse bestehender Websites wurden nur Angebote der Archive der deutschen Bundesländer einbezogen, da deren Voraussetzungen für eine Beurteilung der zur Verfügung stehenden personellen Ressourcen ähnlich sind und sie sich in der Priorisierung der Öffentlichkeitsarbeit von (größeren) Stadtarchiven teilweise stark unterscheiden. Ferner zielt die Studie vornehmlich auf zeitnah umsetzungsfähige inhaltliche Maßnahmen ab und widmet sich weniger einer konkreten Umgestaltung der NLA-Website oder deren Erweiterung durch Crowdsourcing-Projekte oder Social Media. - ( Transferarbeit des 50. wissenschaftlichen Lehrgangs an der Archivschule Marburg)
Data-driven methods for diffusivity prediction in nuclear fuels
Creators: name: Craven, Galen T.
name: Chen, Renai
name: Cooper, Michael W. D.
name: Matthews, Christopher
name: Rizk, Jason
name: Malone, Walter
name: Johnson, Landon
name: Gibson, Tammie
name: Andersson, David A.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The growth rate of structural defects in nuclear fuels under irradiation is intrinsically related to the diffusion rates of the defects in the fuel lattice. The generation and growth of atomistic structural defects can significantly alter the performance characteristics of the fuel. This alteration of functionality must be accurately captured to qualify a nuclear fuel for use in reactors. Predicting the diffusion coefficients of defects and how they impact macroscale properties such as swelling, gas release, and creep is therefore of significant importance in both the design of new nuclear fuels and the assessment of current fuel types. In this article, we apply data-driven methods focusing on machine learning (ML) to determine various diffusion properties of two nuclear fuels, uranium oxide and uranium nitride. We show that using ML can increase, often significantly, the accuracy of predicting diffusivity in nuclear fuels in comparison to current analytical models. We also illustrate how ML can be used to quickly develop fuel models with parameter dependencies that are more complex and robust than what is currently available in the literature. These results suggest there is potential for ML to accelerate the design, qualification, and implementation of nuclear fuels.
Model studies of fluctuations in the background for jets in heavy ion collisions
Creators: name: Hughes, Charles
name: Da Silva, Antonio Carlos Oliveira
name: Nattrass, Christine
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Jets produced in high energy heavy ion collisions are quenched by the quark gluon plasma. Measurements of these jets are influenced by the methods used to suppress and subtract the large, fluctuating background and the assumptions inherent in these methods. We compare the measurements of the background in Pb+Pb collisions at $\sqrt{s_{NN}}$ = 2.76 TeV by the ALICE Collaboration $\underline{(B. Abelev \textit{et al.}, J. High Energy Phys. \mathbf{2012}, 053)}$ to calculations in TennGen (a data-driven random background generator) and PYTHIA Angantyr. A detailed understanding of the width of these fluctuations is important for reducing uncertainties due to unfolding and extending measurements to lower momenta and larger resolution parameters. The standard deviation of the energy in random cones in TennGen is approximately in agreement with the form predicted in the ALICE paper, with deviations of 1--6%. The standard deviation of energy in random cones in Angantyr exceeds the same predictions by approximately 13%. Deviations in both models can be explained by the assumption that the single-particle $d^2N/dy$ $dp_T$ is a gamma distribution in the derivation of the prediction, whereas the model uses a different distribution. This indicates that model comparisons are potentially sensitive to the treatment of the background. We demonstrate that unfolding methods used to remove background fluctuations from jets can affect the comparisons between models and data, $\textit{even in the absence of detector effects}$. Our findings suggest the need to more carefully consider methods for comparing simulations and data.
Single-Copy Certification of Two-Qubit Gates without Entanglement
Creators: name: Choi, Yujun
name: Singal, Tanmay
name: Cho, Young-Wook
name: Han, Sang-Wook
name: Oh, Kyunghwan
name: Moon, Sung
name: Kim, Yong-Su
name: Bae, Joonwoo
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A quantum state transformation can be generally approximated by single- and two-qubit gates. This, however, does not hold with noisy intermediate-scale quantum technologies due to the errors appearing in the gate operations, where errors of two-qubit gates such as controlled-NOT and SWAP operations are dominated. In this work, we present a cost efficient single-copy certification for a realization of a two-qubit gate in the presence of depolarization noise, where it is aimed to identify if the realization is noise-free, or not. It is shown that entangled resources such as entangled states and a joint measurement are not necessary for the purpose, i.e., a noise-free two-qubit gate is not needed to certify an implementation of a two-qubit gate. A proof-of-principle demonstration is presented with photonic qubits.
description: 9 pages. arXiv admin note: text overlap with arXiv:1812.02087
GREAT D4.2 GREAT Case  Study Plan
Creators: name: Hollins, Paul
name: Ower, Jude
name: Griffiths, David
name: Keislinger, Barbara
name: Koller, Katharina
name: Fabian, Claudia
Publisher: name: Zenodo
Year: 2024
Subjects: GREAT Project
Case study design
Multi-interdisciplinary research (MIR) framework
Logic model of evaluation
Citizen science
Stakeholder engagement
Research methodology
Multiple-case design
Data collection
Climate change
Sustainable development
Games-based activities
Citizen agency
Research cycle
Case study implementation
Player participants
Dilemma (DiBL) games
Evaluation designs

description: This deliverable provides details of the Case Study design methods and process to be deployed in the project. The design incorporates an instantiated eight-stage process consistent with and enhanced Multi Interdisciplinary Research (MIR) framework as previously elaborated in GREAT D4.1. The document provides implementation detail for all stages of the Case Study process with hyperlinks to the required supporting documentation and details of a logic model of evaluation. The deliverable, which is a public document, is written to support consortium partners in undertaking research activities in the project as its primary audience. It is , however, anticipated that due to the scale-able nature of the design that future iterations of the design could inform future Case Study research in digital domains involving citizen science and where citizen agency is a primary objective. There is no assumption that all Case studies will conduct all stages of the process though cumulatively all stages will be implemented and evaluated over the sum of the GREAT case studies undertaken over the duration of the project. The Case Study is the primary research instrument deployed in the GREAT project.
Waist Circumference Change is Associated with Blood Pressure Change Independent of BMI Change
Creators: name: Adair, L.S.
name: Gordon-Larsen, P.
name: Avery, C.L.
name: Wang, H.
name: Howard, A.G.
name: Wang, Y.
Publisher: name: Blackwell Publishing Inc.
Year: 2020

description: Objective: This study aimed to understand how an increase in abdominal adiposity relative to overall adiposity is associated with blood pressure (BP) change. Methods: A sex-stratified mixed linear model was used to examine the association (95% CI) between annual changes in waist circumference (WC) and systolic blood pressure and diastolic blood pressure, estimated from two to eight repeated measures across the 1993-2015 China Health and Nutrition Survey, among 5,742 men and 5,972 women (18-66 years) with no history of antihypertension medication use. Results: The association between annual WC change and BP change remained statistically significant but was attenuated after controlling for annual BMI change, regardless of baseline abdominal obesity or overweight status. Each 10-cm annual WC gain in men and women was associated with a 0.98-mm Hg (95% CI: 0.61-1.35) and a 0.97-mm Hg (95% CI: 0.62-1.32) annual increase in systolic blood pressure and a 1.13-mm Hg (95% CI: 0.87-1.38) and a 0.74-mm Hg (95% CI: 0.51-0.97) annual increase in diastolic blood pressure, respectively, independent of annual BMI change. Conclusions: WC gain may elevate BP even in the absence of BMI gain. BP management that addresses only BMI gain could overlook individuals at risk of elevated BP who have increased WC but not BMI.
Dehn surgery and non-separating two-spheres
Creators: name: Hom, Jennifer
name: Lidman, Tye
Publisher: name: arXiv
Year: 2020
Subjects: subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 57K10, 57K18, 57K30

description: When can surgery on a null-homologous knot K in a rational homology sphere produce a non-separating sphere? We use Heegaard Floer homology to give sufficient conditions for K to be unknotted. We also discuss some applications to homology cobordism, concordance, and Mazur manifolds.
description: 6 pages
Stunting of children under two from repeated pregnancy among young mothers
Creators: name: Maravilla, J.C.
name: Betts, K.
name: Alati, R.
name: Adair, L.
Publisher: name: Nature Research
Year: 2020

description: Repeated pregnancy leaves young mothers nutritionally deprived which may in turn lead to poor infant growth. We measure the occurrence and persistence of stunting among offspring of young mothers who experienced repeated pregnancies using data from the Cebu Longitudinal Health and Nutrition Survey. We selected mothers aged 14–24 years (n = 1,033) with singleton birth. We determined the length-for-age z scores (LAZ) at 12 and 24 months of the index child using the World Health Organisation 2007 growth standard. We fitted LAZ, stunting occurrence (i.e. LAZ < − 2) and persistence from 12 to 24 months into regression models and tested for the mediating effect of low birthweight and feeding practices. In these models, repeated pregnancy was analysed in an ordinal approach using number of past pregnancies of young mothers at birth of the index child. Compared to infants born to young mothers aged 14–24 years who had no previous pregnancies, those born to young mothers with repeated pregnancies have at least 0.15 (95% CI − 0.23, − 0.08) LAZ lower and are at higher chance of stunting by at least 40% (95% CI 1.19, 1.67) at 12 and 24 months. Similar cohorts of infants showed an elevated risk of persistent stunting from 12 through 24 months with a relative risk ratio of 1.51 (95% CI 1.21, 1.88). Optimal feeding practices substantially mediated stunting outcomes by further reducing the effects of repeated pregnancy to stunting occurrence and persistence by 19.95% and 18.09% respectively. Mediation tests also showed low birthweight in the causal pathway between repeated pregnancy and stunting. Repeated pregnancy in young mothers is a predictor of stunting among children under 2 years. Secondary pregnancy prevention measures and addressing suboptimal feeding practices are beneficial to mitigate the negative impact of repeated adolescent pregnancy on children.
Decoherence in adiabatic quantum computation
Creators: name: Albash, Tameem
name: Lidar, Daniel A.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Quantum Physics (quant-ph)
subject: Other Condensed Matter (cond-mat.other)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Recent experiments with increasingly larger numbers of qubits have sparked renewed interest in adiabatic quantum computation, and in particular quantum annealing. A central question that is repeatedly asked is whether quantum features of the evolution can survive over the long time-scales used for quantum annealing relative to standard measures of the decoherence time. We reconsider the role of decoherence in adiabatic quantum computation and quantum annealing using the adiabatic quantum master equation formalism. We restrict ourselves to the weak-coupling and singular-coupling limits, which correspond to decoherence in the energy eigenbasis and in the computational basis, respectively. We demonstrate that decoherence in the instantaneous energy eigenbasis does not necessarily detrimentally affect adiabatic quantum computation, and in particular that a short single-qubit $T_2$ time need not imply adverse consequences for the success of the quantum adiabatic algorithm. We further demonstrate that boundary cancellation methods, designed to improve the fidelity of adiabatic quantum computing in the closed system setting, remain beneficial in the open system setting. To address the high computational cost of master equation simulations, we also demonstrate that a quantum Monte Carlo algorithm that explicitly accounts for a thermal bosonic bath can be used to interpolate between classical and quantum annealing. Our study highlights and clarifies the significantly different role played by decoherence in the adiabatic and circuit models of quantum computing.
description: 21 pages, 12 figures. v2: updated to published version
Cusp Volumes of Alternating Knots on Surfaces
Creators: name: Bavier, Brandon
Publisher: name: arXiv
Year: 2020
Subjects: subject: Geometric Topology (math.GT)
subject: FOS: Mathematics

description: We study the geometry of hyperbolic knots that admit alternating projections on embedded surfaces in closed 3-manifolds. We show that, under mild hypothesis, their cusp area admits two sided bounds in terms of the twist number of the alternating projection and the genus of the projection surface. As a result, we derive diagrammatic estimates of slope lengths and give applications to Dehn surgery. These generalize results of Lackenby and Purcell about alternating knots in the 3-sphere. Using a result of Kalfagianni and Purcell, we point out that alternating knots on surfaces of higher genus, can have arbitrarily small cusp density, in contrast to alternating knots on spheres whose cusp densities are bounded away from zero due to Lackenby and Purcell.
description: 48 pages, 16 figures; Typo of $\chi(F)<0$ fixed to $\chi(F)\le 0$ in main theorem; To be published in Algebraic & Geometric Topology
A remark on quantum Hochschild homology
Creators: name: Lipshitz, Robert
Publisher: name: arXiv
Year: 2020
Subjects: subject: Geometric Topology (math.GT)
subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics

description: Beliakova-Putyra-Wehrli studied various kinds of traces, in relation to annular Khovanov homology. In particular, to a graded algebra and a graded bimodule over it, they associate a quantum Hochschild homology of the algebra with coefficients in the bimodule, and use this to obtain a deformation of the annular Khovanov homology of a link. A spectral refinement of the resulting invariant was recently given by Akhmechet-Krushkal-Willis. In this short note we observe that quantum Hochschild homology is a composition of two familiar operations, and give a short proof that it gives an invariant of annular links, in some generality. Much of this is implicit in Beliakova-Putyra-Wehrli's work.
description: 2 pages
Pontryagin Maximum Principle for Incommensurate Fractional-Orders Optimal Control Problems
Creators: name: Ndairou, Faical
name: Torres, Delfim F. M.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics
subject: 26A33, 49K15

description: We introduce a new optimal control problem where the controlled dynamical system depends on multi-order (incommensurate) fractional differential equations. The cost functional to be maximized is of Bolza type and depends on incommensurate Caputo fractional-orders derivatives. We establish continuity and differentiability of the state solutions with respect to perturbed trajectories. Then, we state and prove a Pontryagin maximum principle for incommensurate Caputo fractional optimal control problems. Finally, we give an example, illustrating the applicability of our Pontryagin maximum principle.
description: This is a preprint of a paper whose final and definite form is published Open Access in 'Mathematics', at [https://doi.org/10.3390/math11194218]. Cite this paper as: F. Nda\"{\i}rou and D.F.M. Torres, Pontryagin Maximum Principle for Incommensurate Fractional-Orders Optimal Control Problems, Mathematics 11 (2023), no. 19, Art. 4218, 12 pp
Viral nematics in confined geometries
Creators: name: Manyuhina, O. V.
name: Lawlor, K. B.
name: Marchetti, M. C.
name: Bowick, M. J.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Motivated by recent experiments on the rod-like virus bacteriophage fd, confined to circular and annular domains, we present a theoretical study of structural transitions in these geometries. Using the continuum theory of nematic liquid crystals, we examine the competition between bulk elasticity and surface anchoring, mediated by the formation of topological defects. We show analytically that bulk defects are unstable with respect to defects sitting at the boundary. Moreover, in case of an annulus, whose topology does not require the presence of topological defects, under weak anchoring conditions we find that nematic textures with boundary defects are stable compared to the defect free configurations. Thus our simple approach, with no fitting parameters, suggests a possible symmetry breaking mechanism responsible for the formation of one-, two- and three-fold textures under annular confinement.
description: 7 pages, 6 figures, accepted for publication in Soft Matter (v2: minor changes)