cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The Fractal Dimension of Interfaces in Edwards-Anderson and Long-range Ising Spin Glasses: Determining the Applicability of Different Theoretical Descriptions
Creators: name: Wang, Wenlong
name: Moore, M. A.
name: Katzgraber, Helmut G.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: The fractal dimension of excitations in glassy systems gives information on the critical dimension at which the droplet picture of spin glasses changes to a description based on replica symmetry breaking where the interfaces are space filling. Here, the fractal dimension of domain-wall interfaces is studied using the strong-disorder renormalization group method pioneered by Monthus [Fractals 23, 1550042 (2015)] both for the Edwards-Anderson spin-glass model in up to 8 space dimensions, as well as for the one-dimensional long-ranged Ising spin-glass with power-law interactions. Analyzing the fractal dimension of domain walls, we find that replica symmetry is broken in high-enough space dimensions. Because our results for high-dimensional hypercubic lattices are limited by their small size, we have also studied the behavior of the one-dimensional long-range Ising spin-glass with power-law interactions. For the regime where the power of the decay of the spin-spin interactions with their separation distance corresponds to 6 and higher effective space dimensions, we find again the broken replica symmetry result of space filling excitations. This is not the case for smaller effective space dimensions. These results show that the dimensionality of the spin glass determines which theoretical description is appropriate. Our results will also be of relevance to the Gardner transition of structural glasses.
description: 6 pages, 4 figures, 1 table
High-order compact finite difference scheme for option pricing in stochastic volatility jump models
Creators: name: Düring, Bertram
name: Pitkin, Alexander
Publisher: name: arXiv
Year: 2017
Subjects: subject: Computational Finance (q-fin.CP)
subject: Numerical Analysis (math.NA)
subject: FOS: Economics and business
subject: FOS: Mathematics
subject: 65M06, 91G20, 35Q91

description: We derive a new high-order compact finite difference scheme for option pricing in stochastic volatility jump models, e.g. in Bates model. In such models the option price is determined as the solution of a partial integro-differential equation. The scheme is fourth order accurate in space and second order accurate in time. Numerical experiments for the European option pricing problem are presented. We validate the stability of the scheme numerically and compare its performance to standard finite difference and finite element methods. The new scheme outperforms a standard discretisation based on a second-order central finite difference approximation in all our experiments. At the same time, it is very efficient, requiring only one initial $LU$-factorisation of a sparse matrix to perform the option price valuation. Compared to finite element approaches, it is very parsimonious in terms of memory requirements and computational effort, since it achieves high-order convergence without requiring additional unknowns, unlike finite element methods with higher polynomial order basis functions. The new high-order compact scheme can also be useful to upgrade existing implementations based on standard finite differences in a straightforward manner to obtain a highly efficient option pricing code.
description: 21 pages, 9 figures
Hennings, Emmy: Ruf und Echo (Die Geschichte einer Ehe) (Erinnerung an Hugo Ball) von Emmy Ball-Hennings / Hennings, Emmy: Ruf und Echo (Die Geschichte einer Ehe) (Erinnerung an Hugo Ball) von Emmy Ball-Hennings
Creators: name: Ball-Hennings, Emmy
Publisher: name: [s.n.]
Year: 2024

description: Dokument
A measure theoretic result for approximation by Delone sets
Creators: name: Baake, Michael
name: Haynes, Alan
Publisher: name: arXiv
Year: 2017
Subjects: subject: Dynamical Systems (math.DS)
subject: Metric Geometry (math.MG)
subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11K06, 52C23

description: With a view to establishing measure theoretic approximation properties of Delone sets, we study a setup which arises naturally in the problem of averaging almost periodic functions along exponential sequences. In this setting, we establish a full converse of the Borel-Cantelli lemma. This provides an analogue of more classical problems in the metric theory of Diophantine approximation, but with the distance to the nearest integer function replaced by distance to an arbitrary Delone set.
description: 6 pagess, new version with minor revisions and updates
Black Holes in Loop Quantum Gravity
Creators: name: Perez, Alejandro
Publisher: name: arXiv
Year: 2017
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: This is a review of the results on black hole physics in the framework of loop quantum gravity. The key feature underlying the results is the discreteness of geometric quantities at the Planck scale predicted by this approach to quantum gravity. Quantum discreteness follows directly from the canonical quantization prescription when applied to the action of general relativity that is suitable for the coupling of gravity with gauge fields and specially with fermions. Planckian discreteness and causal considerations provide the basic structure for the understanding of the thermal properties of black holes close to equilibrium. Discreteness also provides a fresh new look at more (at the moment) speculative issues such as those concerning the fate of information in black hole evaporation. The hypothesis of discreteness leads also to interesting phenomenology with possible observational consequences. The theory of loop quantum gravity is a developing program. This review reports its achievements and open questions in a pedagogical manner with an emphasis on quantum aspects of black hole physics.
description: Typos corrected, references corrected. To appear in Reports on Progress in Physics
Maximum a posteriori CMB lensing reconstruction
Creators: name: Carron, Julien
name: Lewis, Antony
Publisher: name: arXiv
Year: 2017
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Gravitational lensing of the CMB is a valuable cosmological signal that correlates to tracers of large-scale structure and acts as a important source of confusion for primordial $B$-mode polarization. State-of-the-art lensing reconstruction analyses use quadratic estimators, which are easily applicable to data. However, these estimators are known to be suboptimal, in particular for polarization, and large improvements are expected to be possible for high signal-to-noise polarization experiments. We develop a method and numerical code, $\rm{LensIt}$, that is able to find efficiently the most probable lensing map, introducing no significant approximations to the lensed CMB likelihood, and applicable to beamed and masked data with inhomogeneous noise. It works by iteratively reconstructing the primordial unlensed CMB using a deflection estimate and its inverse, and removing residual lensing from these maps with quadratic estimator techniques. Roughly linear computational cost is maintained due to fast convergence of iterative searches, combined with the local nature of lensing. The method achieves the maximal improvement in signal to noise expected from analytical considerations on the unmasked parts of the sky. Delensing with this optimal map leads to forecast tensor-to-scalar ratio parameter errors improved by a factor $\simeq 2 $ compared to the quadratic estimator in a CMB stage IV configuration.
description: v3 fixes typos in Eqs. 3.3, 3.4 and footnote 1
Identities for the generalized Fibonacci polynomial
Creators: name: Flórez, Rigoberto
name: McAnally, Nathan
name: Mukherjee, Antara
Publisher: name: arXiv
Year: 2017
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11B39 (Primary), 11B83 (Secondary)

description: A second order polynomial sequence is of Fibonacci type (Lucas type) if its Binet formula is similar in structure to the Binet formula for the Fibonacci (Lucas) numbers. In this paper we generalize identities from Fibonacci numbers and Lucas numbers to Fibonacci type and Lucas type polynomials. A Fibonacci type polynomial is equivalent to a Lucas type polynomial if they both satisfy the same recurrence relations. Most of the identities provide relationships between two equivalent polynomials. In particular, each type of identities in this paper relate the following polynomial sequences: Fibonacci with Lucas, Pell with Pell-Lucas, Fermat with Fermat-Lucas, both types of Chebyshev polynomials, Jacobsthal with Jacobsthal-Lucas and both types of Morgan-Voyce.
A non-increasing tree growth process for recursive trees and applications
Creators: name: Eslava, Laura
Publisher: name: arXiv
Year: 2017
Subjects: subject: Probability (math.PR)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 60C05, 05C80

description: We introduce a non-increasing tree growth process $((T_n,σ_n),\, n\ge 1)$, where $T_n$ is a rooted labeled tree on $n$ vertices and $σ_n$ is a permutation of the vertex labels. The construction of $(T_{n},σ_n)$ from $(T_{n-1},σ_{n-1})$ involves rewiring a random (possibly empty) subset of edges in $T_{n-1}$ towards the newly added vertex; as a consequence $T_{n-1} \not\subset T_n$ with positive probability. The key feature of the process is that the shape of $T_n$ has the same law as that of a random recursive tree, while the degree distribution of any given vertex is not monotonous in the process. We present two applications. First, while couplings between Kingman's coalescent and random recursive trees where known for any fixed $n$, this new process provides a non-standard coupling of all finite Kingman's coalescents. Second, we use the new process and the Chen-Stein method to extend the well-understood properties of degree distribution of random recursive trees to extremal-range cases. Namely, we obtain convergence rates on the number of vertices with degree at least $c\ln n$, $c\in (1,2)$, in trees with $n$ vertices. Further avenues of research are discussed.
description: 27 pages, 3 figures
Hennings, Emmy: Zum neuen Buch von Siegfried Streicher.Streicher, Siegfried: Die Tragödie einer Gottessucherin. Margaretha von Wildensbuch. Verlag Benziger, Einsiedeln.; Vom Schwarmgeist der Erweckten. Streicher, Siegfried / Hennings, Emmy: Zum neuen Buch von Siegfried Streicher.Streicher, Siegfried: Vom Schwergeist der Erweckten (Fassung B)
Creators: name: Ball-Hennings, Emmy
Publisher: name: [s.n.]
Year: 2024

description: Dokument
Hennings, Emmy: Zum neuen Buch von Siegfried Streicher.Streicher, Siegfried: Die Tragödie einer Gottessucherin. Margaretha von Wildensbuch. Verlag Benziger, Einsiedeln.; Vom Schwarmgeist der Erweckten. Streicher, Siegfried / Hennings, Emmy: Zum neuen Buche von Siegfried Streicher. (Fassung C)
Creators: name: Ball-Hennings, Emmy
Publisher: name: [s.n.]
Year: 2024

description: Dokument
A novel model for improving the maintainability of web-based systems
Creators: name: Ghosheh, Emad
Publisher: name: University of Westminster
Year: 2010
Subjects: Maintainability, metrics, web applications, empirical studies

description: Web applications incorporate important business assets and offer a convenient way for businesses to promote their services through the internet. Many of these web applications have evolved from simple HTML pages to complex applications that have a high maintenance cost. This is due to the inherent characteristics of web applications, to the fast internet evolution and to the pressing market which imposes short development cycles and frequent modifications. In order to control the maintenance cost, quantitative metrics and models for predicting web applications’ maintainability must be used. Maintainability metrics and models can be useful for predicting maintenance cost, risky components and can help in assessing and choosing between different software artifacts. Since, web applications are different from traditional software systems, models and metrics for traditional systems can not be applied with confidence to web applications. Web applications have special features such as hypertext structure, dynamic code generation and heterogenousity that can not be captured by traditional and object-oriented metrics. This research explores empirically the relationships between new UML design metrics based on Conallen’s extension for web applications and maintainability. UML web design metrics are used to gauge whether the maintainability of a system can be improved by comparing and correlating the results with different measures of maintainability. We studied the relationship between our UML metrics and the following maintainability measures: Understandability Time (the time spent on understanding the software artifact in order to complete the questionnaire), Modifiability Time(the time spent on identifying places for modification and making those modifications on the software artifact), LOC (absolute net value of the total number of lines added and deleted for components in a class diagram), and nRev (total number of revisions for components in a class diagram). Our results gave an indication that there is a possibility for a relationship to exist between our metrics and modifiability time. However, the results did not show statistical significance on the effect of the metrics on understandability time. Our results showed that there is a relationship between our metrics and LOC(Lines of Code). We found that the following metrics NAssoc, NClientScriptsComp, NServerScriptsComp, and CoupEntropy explained the effort measured by LOC(Lines of Code). We found that NC, and CoupEntropy metrics explained the effort measured by nRev(Number of Revisions). Our results give a first indication of the usefulness of the UML design metrics, they show that there is a reasonable chance that useful prediction models can be built from early UML design metrics.
A Measurement of the Cosmic Microwave Background $B$-Mode Polarization Power Spectrum at Sub-Degree Scales from 2 years of POLARBEAR Data
Creators: name: The POLARBEAR Collaboration
name: Ade, P. A. R.
name: Aguilar, M.
name: Akiba, Y.
name: Arnold, K.
name: Baccigalupi, C.
name: Barron, D.
name: Beck, D.
name: Bianchini, F.
name: Boettger, D.
name: Borrill, J.
name: Chapman, S.
name: Chinone, Y.
name: Crowley, K.
name: Cukierman, A.
name: Dobbs, M.
name: Ducout, A.
name: Dünner, R.
name: Elleflot, T.
name: Errard, J.
name: Fabbian, G.
name: Feeney, S. M.
name: Feng, C.
name: Fujino, T.
name: Galitzki, N.
name: Gilbert, A.
name: Goeckner-Wald, N.
name: Groh, J.
name: Hamada, T.
name: Hall, G.
name: Halverson, N. W.
name: Hasegawa, M.
name: Hazumi, M.
name: Hill, C.
name: Howe, L.
name: Inoue, Y.
name: Jaehnig, G. C.
name: Jaffe, A. H.
name: Jeong, O.
name: Kaneko, D.
name: Katayama, N.
name: Keating, B.
name: Keskitalo, R.
name: Kisner, T.
name: Krachmalnicoff, N.
name: Kusaka, A.
name: Jeune, M. Le
name: Lee, A. T.
name: Leitch, E. M.
name: Leon, D.
name: Linder, E.
name: Lowry, L.
name: Matsuda, F.
name: Matsumura, T.
name: Minami, Y.
name: Montgomery, J.
name: Navaroli, M.
name: Nishino, H.
name: Paar, H.
name: Peloton, J.
name: Pham, A. T. P.
name: Poletti, D.
name: Puglisi, G.
name: Reichardt, C. L.
name: Richards, P. L.
name: Ross, C.
name: Segawa, Y.
name: Sherwin, B. D.
name: Silva-Feaver, M.
name: Siritanasak, P.
name: Stebor, N.
name: Stompor, R.
name: Suzuki, A.
name: Tajima, O.
name: Takakura, S.
name: Takatori, S.
name: Tanabe, D.
name: Teply, G. P.
name: Tomaru, T.
name: Tucker, C.
name: Whitehorn, N.
name: Zahn, A.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We report an improved measurement of the cosmic microwave background (CMB) $B$-mode polarization power spectrum with the POLARBEAR experiment at 150 GHz. By adding new data collected during the second season of observations (2013-2014) to re-analyzed data from the first season (2012-2013), we have reduced twofold the band-power uncertainties. The band powers are reported over angular multipoles $500 \leq \ell \leq 2100$, where the dominant $B$-mode signal is expected to be due to the gravitational lensing of $E$-modes. We reject the null hypothesis of no $B$-mode polarization at a confidence of 3.1$σ$ including both statistical and systematic uncertainties. We test the consistency of the measured $B$-modes with the $Λ$ Cold Dark Matter ($Λ$CDM) framework by fitting for a single lensing amplitude parameter $A_L$ relative to the Planck best-fit model prediction. We obtain $A_L = 0.60 ^{+0.26} _{-0.24} ({\rm stat}) ^{+0.00} _{-0.04}({\rm inst}) \pm 0.14 ({\rm foreground}) \pm 0.04 ({\rm multi})$, where $A_{L}=1$ is the fiducial $Λ$CDM value, and the details of the reported uncertainties are explained later in the manuscript.
description: 16 pages, 10 figures. Minor changes to match the published version. For data and figures, see http://bolo.berkeley.edu/polarbear/data/polarbear_BB_2017/
Scripts, models and predicted scores for training, prediction and evaluation of lociPARSE
Creators: name: Tarafder, Sumit
Publisher: name: Zenodo
Year: 2024

description: This Material.tar.gz folder contains all the Python scripts necessary for training, prediction and evaluation of lociPARSE with other state-of-the-art methods in literature as reported in the paper.

It also includes the saved PyTorch models required for the prediction.

The evaluation folder contains all the predicted scores by all the reported methods.
Second-order Cosmological Perturbations Engendered by Point-like Masses
Creators: name: Brilenkov, Ruslan
name: Eingorn, Maxim
Publisher: name: arXiv
Year: 2017
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In the $Λ$CDM framework, presenting nonrelativistic matter inhomogeneities as discrete massive particles, we develop the second-order cosmological perturbation theory. Our approach relies on the weak gravitational field limit. The derived equations for the second-order scalar, vector and tensor metric corrections are suitable at arbitrary distances including regions with nonlinear contrasts of the matter density. We thoroughly verify fulfilment of all Einstein equations as well as self-consistency of order assignments. In addition, we achieve logical positive results in the Minkowski background limit. Feasible investigations of the cosmological backreaction manifestations by means of relativistic simulations are also outlined.
description: v2 = v1 + minor changes + extra discussion + new Refs.; comments welcome
Quantum Rate-Distortion Coding of Relevant Information
Creators: name: Salek, Sina
name: Cadamuro, Daniela
name: Kammerlander, Philipp
name: Wiesner, Karoline
Publisher: name: arXiv
Year: 2017
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences
subject: 81P45 (primary), 94A34 (secondary)

description: Rate-distortion theory provides bounds for compressing data produced by an information source to a specified encoding rate that is strictly less than the source's entropy. This necessarily entails some loss, or distortion, between the original source data and the best approximation after decompression. The so-called Information Bottleneck Method is designed to compress only `relevant' information. Which information is relevant is determined by the correlation between the data being compressed and a variable of interest, so-called side information. In this paper, an Information Bottleneck Method is introduced for the compression of quantum data. The channel communication picture is used for compression and decompression. The rate of compression is derived using an entanglement assisted protocol with classical communication, and under an unproved conjecture that the rate function is convex in the distortion parameter. The optimum channel achieving this rate for a given input state is characterised. The conceptual difficulties arising due to differences in the mathematical formalism between quantum and classical probability theory are discussed and solutions are presented.
Maximum Number of Modes of Gaussian Mixtures
Creators: name: Améndola, Carlos
name: Engström, Alexander
name: Haase, Christian
Publisher: name: arXiv
Year: 2017
Subjects: subject: Statistics Theory (math.ST)
subject: Optimization and Control (math.OC)
subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 62E10 (primary), 62H05 (secondary)

description: Gaussian mixture models are widely used in Statistics. A fundamental aspect of these distributions is the study of the local maxima of the density, or modes. In particular, it is not known how many modes a mixture of $k$ Gaussians in $d$ dimensions can have. We give a brief account of this problem's history. Then, we give improved lower bounds and the first upper bound on the maximum number of modes, provided it is finite.
description: 14 pages, 5 figures. Final version, to appear in Information and Inference
A New Class of Exact Solutions in Einstein-Maxwell-dilaton Theory
Creators: name: Ghezelbash, A. M.
Publisher: name: arXiv
Year: 2017
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We find new solutions to the five-dimensional Einstein-Maxwell-dilaton theory with cosmological constant where the dilaton field couples to the electromagnetic field as well as to the cosmological term with two different coupling constants. The five-dimensional spacetime is non-stationary and is a conformally regular spacetime, everywhere. Both the dilaton field and the electromagnetic field depends on time and two spatial directions. The cosmological constant takes positive, negative or zero value, depending on the value of coupling constant. We study the physical properties of the spacetime and show that the solutions are unique in five dimensions and can't be uplifted to higher-dimensional Einstein-Maxwell theory or Einstein gravity in presence of cosmological constant. Moreover, we construct new solutions to the theory where both coupling constants are equal.
description: 22 pages, 12 figures
title: Realising the Opportunities of Chinese Tourism: A Comparative Study
Creators: name: Ooi, CS
name: Yang, E
name: Lean, G
name: Sin, HL
name: Cheer, JM
name: Long, F
name: Ong, CE
name: Vorobjovas-Pinta, O
name: Wang, Y
name: Ma, Yue
Publisher: name: Asia Institute, University of Tasmania
Year: 2021

description: The project compared various strategies by tourism authorities in different Australian states and different countries in managing the Chinese tourist market. In collaboration with experts in different destinations, this study conducted a media survey of five Australian states and three popular Chinese country destinations on how they attract and manage Chinese visitors.
Linear instability of the lid-driven flow in a cubic cavity
Creators: name: Gelfgat, A. Y.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Primary instability of the lid-driven flow in a cube is studied by a comprehensive linear stability approach. Two cases, in which the lid moves parallel to the cube sidewall or parallel to the diagonal plane, are considered. The SIMPLE procedure is applied for evaluation of the Krylov vectors needed for application of the Newton and Arnoldi iteration methods. The finite volume grid is gradually refined from 1003 to 2563 nodes. The computations result in the grid convergent values of the critical Reynolds number and oscillation frequency. Patterns of the most unstable perturbation are reported. Finally, some new arguments supporting the assumption that the centrifugal mechanism triggers instability in both cases are given.
Bibliographie der Geschichte, Landes- und Volkskunde von Stadt und Kanton Zürich: August 1988 bis August 1989
Creators: name: Kohler, Ludwig
Publisher: name: Buchdruckerei a/d Sihl AG
Year: 1989
Subjects: subject: 010 Bibliografie
subject: Kanton Zürich
subject: Zürich
subject: Bibliografie
subject: Geschichte
subject: Landeskunde
subject: Volkskunde

description: Separatdruck aus dem Zürcher Taschenbuch auf das Jahr 1990.
Poincaré duality for tropical Dolbeault cohomology of non-archimedean Mumford curves
Creators: name: Jell, Philipp
name: Wanner, Veronika
Publisher: name: arXiv
Year: 2016
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 32P05 (Primary), 14T05, 14G22, 14G40 (Secondary)

description: We calculate the tropical Dolbeault cohomology for the analytifications of the projective line and Mumford curves over non-archimedean fields. We show that the cohomology satisfies Poincaré duality and behaves analogously to the cohomology of curves over the complex numbers. Further, we give a complete calculation of the dimension of the cohomology on a basis of the topology.
description: To appear in Journal of Number Theory. 22 pages
Uncovering the Role and Labor of Volunteer Leaders within a Community-Led Urban Tree Planting Initiative
Creators: name: Riedman, Elizabeth
name: Pearsall, Hamil
name: Roman, Lara A.
name: Ifill, Tim
name: Maslin, Mindy
name: Dentice, Dana
name: Samaha, Jehane
name: Davis, Asha-Lé
Publisher: name: Taylor & Francis
Year: 2024
Subjects: subject: Cell Biology
subject: Ecology
subject: FOS: Biological sciences
subject: Cancer
subject: Infectious Diseases
subject: FOS: Health sciences

description: Urban forestry programs across North America rely on volunteers to lead urban forest stewardship activities and encourage participation in tree planting and general maintenance. We examined the leadership structure of a tree planting initiative (TPI) in the greater Philadelphia region to understand the role and labor contributions of volunteer leaders, and the current challenges of achieving equitable urban tree canopy within community-led TPIs. Using an online survey, we found that leaders contribute unpaid labor, time, and skills within the following categories: group organization and communication, tree-planting and event coordination, tree care and maintenance, and broader environmental education and advocacy. Volunteer leaders also face challenges related to leadership and administrative tasks. This study deepens understandings of the labor needs within volunteer TPIs and potential ways to support the equitable growth of these initiatives moving forward. Future research is needed to understand recognitional equity gaps in volunteer leadership more broadly.
Hennings, Emmy: Von Frauen und Gärten in Sizilien (2 Fassungen) / Hennings, Emmy: Von Frauen und Gärten in Sizilien (2. Fassung)
Creators: name: Ball-Hennings, Emmy
Publisher: name: [s.n.]
Year: 2024

description: Dokument
title: Kardiovaskuläres Tissue Engineering
title: Möglichkeiten, Limitationen und Innovationen
titleType: Subtitle
Creators: name: Thierfelder, Nikolaus
Publisher: name: Ludwig-Maximilians-Universität München
Year: 2022
Subjects: subject: 600
subject: 610
subject: FOS: Medical and Health Sciences
valueUri: http://www.oecd.org/science/inno/38235147.pdf

description: Im Rahmen des vorliegenden Habilitationsprojektes sollte untersucht werden, ob Implantate im Sinne der vorgestellten Tissue Engineering-Ansätze (in-vitro und in-situ) herzustellen sind und welche möglichen Gründe deren Einsatz in der kardiovaskulären Medizin bisher verhindert haben. Nach erfolgreicher Durchführung von 12 experimentellen Studien im Bereich des kardiovaskulären Tissue Engineering (TE) und in Zusammenschau ihrer Ergebnisse können aus präklinischer Sicht mögliche Erklärungen zum bisher geringen klinischen Einsatz regenerativer Implantate, aber auch Innovationen und potenzielle Lösungsansätze aufgezeigt werden. Es ist erkennbar, dass die Anforderungen von Seiten eines Herstellers, unter Berücksichtigung der regulatorischen Aspekte, aber auch die Bedürfnisse der Anwender und Nutzer teilweise stark von den Eigenschaften der unterschiedlichen tissue-engineerten Produkte differieren. Diese Habilitationsarbeit offenbart nach der Durchführung von in-vitro und in-vivo Studien eine Erklärungsmöglichkeit für den bisher fehlenden klinischen Erfolg des kardiovaskulären TE durch die Diskrepanz zwischen den Anforderungen an ein tissue-engineertes Implantat und dessen gegebenen Eigenschaften. Ferner werden Möglichkeiten aufgezeigt, die bisher verfolgten TE-Ansätze durch Weiterentwicklung und Innovation voranzutreiben, um sie wettbewerbs- und zukunftsfähig zu machen.
“In my Own Land, I Am Treated like a Foreigner”: Mining-Induced Challenges and Psychological Distress Among Farmers in Ghanaian Mining Communities
Creators: name: Annor, Francis
name: Annor, Sampson
name: Abdul-Nasiru, Inusah
Publisher: name: Taylor & Francis
Year: 2024
Subjects: subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Science Policy

description: This study explored mining-induced challenges, experiences of psychological distress, and coping strategies among farmers in mining communities in Ghana. Using a qualitative research approach, in-depth interviews were conducted with 30 crop farmers in two mining communities in the Ellembelle District in the Western Region of Ghana. Thematic analysis of the data suggests that psychological distress is a common experience among farmers in mining communities. Farmers’ experiences of psychological distress emanate from various mining-induced challenges, including deprivation of vital resources, constraints on farming activities, economic hardship, and adjustment difficulties associated with displacement and resettlement. Faced with limited formal support services, farmers in mining communities employ religious faith, avoidance, and adaptation as mechanisms for coping with the adverse impacts of mining. The findings of this study suggest the need to address issues related to psychological well-being before and after the onset of mining activities in communities.
Sustaining the Public’s Positive Feelings towards Ungulates at the Local Level
Creators: name: Johansson, Maria
name: Dressel, Sabrina
name: Sjölander-Lindqvist, Annelie
name: Sandström, Camilla
Publisher: name: Taylor & Francis
Year: 2024
Subjects: subject: Environmental Sciences not elsewhere classified
subject: Ecology
subject: FOS: Biological sciences

description: In Europe, spatial distributions and densities of ungulates have been increasing, triggering both negative and positive feelings. Ecosystem-based and collaborative approaches to wildlife management have been introduced to, among other things, consider the perspectives of the local public. Consequently, it becomes necessary to understand the public’s emotional appraisals and feelings toward the presence of moose and other ungulates. We studied four socio-ecological contexts in Sweden. Statistical analyses of a postal questionnaire (N = 1111) showed that negative feelings were weak and positive feelings were modest across all settings. In particular, wildlife value orientation of mutualism and perceptions of moose and other ungulates as supporting recreation opportunities sustained positive feelings. Currently there seems to be little need among the public to cope with negative implications of ungulates. Management may benefit from informing about adequate strategies and building social trust if negative impacts of ungulates were to become salient to the public.
Navigating Urban-Agricultural Watershed Management Conflicts: A View from Watershed Coordinators
Creators: name: Yoder, Landon
name: Church, Sarah
name: Wagner, Kamebry
Publisher: name: Taylor & Francis
Year: 2024
Subjects: subject: Medicine
subject: Neuroscience
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Marine Biology
subject: Science Policy
subject: Mental Health

description: Water quality impairment from fertilizer runoff remains a major source of urban-agricultural conflicts when it leads to serious health risks. In this paper, we analyze the role of watershed organizations in Iowa, USA, that include both agricultural and urban stakeholders to address water quality challenges. We conducted three focus group discussions with 14 coordinators representing these watershed organizations to analyze what policy tools these organizations are using to address urban-agricultural conflicts and what outcomes have resulted from their efforts. We used qualitative coding to apply an existing set of policy tools already established in the literature. Coordinators’ responses showed that who participates in these organizations has a major impact on the level of problem solving. There were limited instances of joint urban-agricultural engagement strategies, but these were promising in changing individual’s perspectives and indicate that strategic targeting of watershed participants may be crucial to overcoming conflicts.
Engaged Network Tools to Close Collaborative Gaps: Uses, Limitations, and Design Principles
Creators: name: Fried, Harrison
name: Hamilton, Matthew
name: Berardo, Ramiro
name: Ordonez, Kimberly
name: Basu, Rohit
Publisher: name: Taylor & Francis
Year: 2024
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Biotechnology
subject: Biological Sciences not elsewhere classified
subject: Information Systems not elsewhere classified
subject: Science Policy

description: In this paper, we explore how community-engaged network tools can help to overcome fragmentation in environmental governance systems. We created a network tool that offers personalized partnership recommendations to practitioners that would close “collaborative gaps,” which are instances where two actors who manage the same issue(s) fail to collaborate with one another. The network tool is based on a social-ecological network of 88 stakeholder organizations and 19 climate change adaptation issues in Columbus, Ohio. We conducted focus group conversations with practitioners to gauge the potential uses, limitations, and recommendations for the network tool. Importantly, our results suggest that similar engaged network tools can be (1) hampered by the complexity of ­network visualizations (i.e., data interpretability), (2) irrelevant if researcher-created networks fail to match practitioners’ network perceptions (i.e., data relevancy), and (3) restricted by missing data (i.e., data validity). We conclude by identifying design principles for future network tools.
Segmentation of the Proximal Femur from MR Images using Deep Convolutional Neural Networks
Creators: name: Deniz, Cem M.
name: Xiang, Siyuan
name: Hallyburton, Spencer
name: Welbeck, Arakua
name: Babb, James S.
name: Honig, Stephen
name: Cho, Kyunghyun
name: Chang, Gregory
Publisher: name: arXiv
Year: 2017
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: Magnetic resonance imaging (MRI) has been proposed as a complimentary method to measure bone quality and assess fracture risk. However, manual segmentation of MR images of bone is time-consuming, limiting the use of MRI measurements in the clinical practice. The purpose of this paper is to present an automatic proximal femur segmentation method that is based on deep convolutional neural networks (CNNs). This study had institutional review board approval and written informed consent was obtained from all subjects. A dataset of volumetric structural MR images of the proximal femur from 86 subject were manually-segmented by an expert. We performed experiments by training two different CNN architectures with multiple number of initial feature maps and layers, and tested their segmentation performance against the gold standard of manual segmentations using four-fold cross-validation. Automatic segmentation of the proximal femur achieved a high dice similarity score of 0.94$\pm$0.05 with precision = 0.95$\pm$0.02, and recall = 0.94$\pm$0.08 using a CNN architecture based on 3D convolution exceeding the performance of 2D CNNs. The high segmentation accuracy provided by CNNs has the potential to help bring the use of structural MRI measurements of bone quality into clinical practice for management of osteoporosis.
description: This is a pre-print of an article published in Scientific Reports. The final authenticated version is available online at: https://doi.org/10.1038/s41598-018-34817-6
Habitat Suitability Assessment for Urban Beavers in Metro Atlanta, GA, and Charlotte, NC
Creators: name: Guglielmi, Alisha
Publisher: name: Georgia State University
Year: 2023

description:
Degradation in urban streams results from expansive impervious surface cover channeling stormflow directly to streams, lessening water storage ability. To slow velocity and decrease peak flow in urban watersheds, stormwater management ponds can be effective in alleviating the impact of flooding but require resources for establishment and maintenance. Urban beaver ponds also effectively store large quantities of water, while offering ecological and geomorphic benefits. Conflicts between beavers and humans arise when dams cause localized flooding and unexpected landscape changes. Lessening conflict requires a spatial understanding of habitat suitability, which this study attempted by modelling key habitat characteristics using GIS. I found that employing input parameters typical of models built for forested catchments resulted in outputs not specific enough to highlight beaver-preferred landscape in an urban setting. After adjusting inputs to reflect patterns at urban beaver sites, the output was better at emphasizing beaver locations.
Assessing Urbanization Impacts on Surface Water Quality in the Atlanta Region
Creators: name: Orimolade, Oluwatosin
Publisher: name: Georgia State University
Year: 2023

description:
Urbanization alters the quality of the natural environment, with more land areas that were previously covered with forest are now being converted to built-up areas. As a result, watersheds are typically negatively impacted by urbanization. This study analyzed multiple water-quality variables (i.e., temperature, turbidity, pH, dissolved oxygen, and conductance) in 24 to 30 watersheds in the Atlanta, GA region during 2014  2021. To understand the impact of urbanization on water quality, monthly means, correlations, and linear regression were used to investigate the relationship between water quality variables and watersheds characteristics. Landcover characteristics such as developed land, imperviousness, population and housing densities, increased stream temperature, and conductance, while decreased DO levels and turbidity. High temperatures and low dissolved oxygen can affect water quality, rendering it unsuitable for various uses. It is recommended that this approach for water quality assessment be used in other metropolitan areas.
Using GIS Network Modeling to Evaluate Access Disruption to Critical Health Facilities During Flood Events
Creators: name: Akinola, Sarah
Publisher: name: Georgia State University
Year: 2023

description:
In recent decades, floods have been among the most devastating disaster events, resulting in significant losses of lives and properties. When flooding occurs and people could not access a particular hospital, they would need an alternative route which might increase their driving time. For disaster mitigation, it is important to understand how flood events impact accessibility in this respect. This research used GIS network modeling to determine potential disruptions of road connectivity between hospitals to census tracts in Atlanta. The obstructed-network map was used to determine the shortest path between each census tract to major hospitals in Atlanta.


This research aims to generate crucial insights on node disconnectedness and help to improve the accessibility of critical services such as emergency rooms during weather-related disaster events. Such information can be used to plan appropriate mitigation strategies by multiple stakeholders, including emergency management, public health, and hospital systems, among others.
Holomorphic Anomaly and Quantum Mechanics
Creators: name: Codesido, Santiago
name: Marino, Marcos
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We show that the all-orders WKB periods of one-dimensional quantum mechanical oscillators are governed by the refined holomorphic anomaly equations of topological string theory. We analyze in detail the double-well potential and the cubic and quartic oscillators, and we calculate the WKB expansion of their quantum free energies by using the direct integration of the anomaly equations. We reproduce in this way all known results about the quantum periods of these models, which we express in terms of modular forms on the WKB curve. As an application of our results, we study the large order behavior of the WKB expansion in the case of the double well, which displays the double factorial growth typical of string theory.
description: 30 pages, 5 figures; comments and references added
The geometry of maximal representations of surface groups into SO(2,n)
Creators: name: Collier, Brian
name: Tholozan, Nicolas
name: Toulisse, Jérémy
Publisher: name: arXiv
Year: 2017
Subjects: subject: Differential Geometry (math.DG)
subject: Geometric Topology (math.GT)
subject: FOS: Mathematics

description: In this paper, we study the geometric and dynamical properties of maximal representations of surface groups into Hermitian Lie groups of rank 2. Combining tools from Higgs bundle theory, the theory of Anosov representations, and pseudo-Riemannian geometry, we obtain various results of interest. We prove that these representations are holonomies of certain geometric structures, recovering results of Guichard and Wienhard. We also prove that their length spectrum is uniformly bigger than that of a suitably chosen Fuchsian representation, extending a previous work of the second author. Finally, we show that these representations preserve a unique minimal surface in the symmetric space, extending a theorem of Labourie for Hitchin representations in rank 2.
description: 56 pgs, section 3 has been reorganized , former sections 4.2 and 4.3 have been merged into section 4.2 and rewritten to avoid reference to maximal surfaces and Higgs bundles, appendix added on strong version of Ahlfors-Schwarz-Pick lemma. To appear in Duke Math Journal
Unentangled Measurements and Frame Functions
Creators: name: Lebl, Jiri
name: Shakeel, Asif
name: Wallach, Nolan
Publisher: name: arXiv
Year: 2017
Subjects: subject: Quantum Physics (quant-ph)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 81P45, 81P40

description: Gleason's theorem asserts the equivalence of von Neumann's density operator formalism of quantum mechanics and frame functions, which are functions on the pure states that sum to 1 on any orthonormal basis of Hilbert space of dimension at least 3. The unentangled frame functions are initially only defined on unentangled (that is, product) states in a multi-partite system. The third author's Unentangled Gleason's Theorem shows that unentangled frame functions determine unique density operators if and only if each subsystem is at least 3-dimensional. In this paper, we determine the structure of unentangled frame functions in general. We first classify them for multi-qubit systems, and then extend the results to factors of varying dimensions including countably infinite dimensions (separable Hilbert spaces). A remarkable combinatorial structure emerges, suggesting possible fundamental interpretations.
description: 8 pages
High dimensional deformed rectangular matrices with applications in matrix denoising
Creators: name: Ding, Xiucai
Publisher: name: arXiv
Year: 2017
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics

description: We consider the recovery of a low rank $M \times N$ matrix $S$ from its noisy observation $\tilde{S}$ in two different regimes. Under the assumption that $M$ is comparable to $N$, we propose two consistent estimators for $S$. Our analysis relies on the local behavior of the large dimensional rectangular matrices with finite rank perturbation. We also derive the convergent limits and rates for the singular values and vectors of such matrices.
The Iraq crisis of 2003 and press-state relations :an analysis of press coverage in Finland, Ireland and the UK
Creators: name: Halttu, Janne
Publisher: name: University of Westminster
Year: 2010

description: The dissensus over Iraq on both international and national levels offers a rich setting for a cross-national research to test some assumptions about media-foreign policy relationship originating mainly from American political communication literature. This line of research suggests that the government policy line and national elite opinion (consensus/dissensus) are the most important factors in explaining how the media cover international politics. This study focuses on three European states which adopted different policies with regard to Iraq: Finland (anti-war), Ireland (neutral) and the UK (pro-war). The study employs both quantitative and qualitative content analysis in order to determine the range of sources, selection of topics and the tone of the press coverage of the Iraq crisis and controversial national Iraq policies. Data consist of two daily quality newspapers from each country from different ends of the political spectrum. However, in the absence of another national daily, a regional quality newspaper and the biggest national tabloid newspaper were included from Finland. Main periods of analysis cover four weeks at critical phases of the crisis between February and May 2003. The analysis indicated that governments' foreign policy line did not explain the differences in press coverage very well. In the case of Finland, opinion items were sympathetic to anti-war views but news articles often reproduced the US/UK case for war. Meanwhile, the national political elite had little interest in engaging into a public debate on such issues as US motivations, the war's legal repercussions or potential consequences for the fragile Middle Eastern security system. With national elite unwilling to publicly challenge the US/UK claims, the Finnish press coverage did not stand out as particularly critical of the invasion although the US claims did not go uncontested in the Finnish newspapers either. In Ireland and the UK, clear differences between newspapers operating in the same political system indicated that government policy was not the most significant factor in explaining how the press covered the Iraq crisis. In both countries, the elites were divided over the issue of Iraq and the newspapers reflected these divisions. The Independent and the Irish Times were more sympathetic to the political opposition's anti-war views than the Daily Telegraph and the Irish Independent. The Telegraph was the most consistent in its support for the war but the analysis also indicated that in the post-war situation the press coverage became less uniform both within the newspapers and countries. Overall, the opinions were much more polarised than in the Finnish newspapers clearly indicating that the elite dissensus had brought the Iraq policy in 'the sphere of legitimate controversy'.