cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Diagrammatic analysis of correlations in polymer fluids: Cluster diagrams via Edwards' field theory
Creators: name: Morse, David C.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: A straightforward expansion of Edwards' functional integral representation of the grand partition function for a polymer liquid as an infinite set of Feynman diagrams is shown to yield a cluster expansion that is closely related to the corresponding Mayer cluster expansion developed for flexible molecules by Chandler and coworkers. The procedure initially yields a perturbative cluster expansion in which all free energies and correlation functions are expressed diagrammatically as functionals of single-molecule correlation functions of non-interacting molecules. Topological reduction yields several renormalized expansions for collective correlation functions of all orders as functionals of single-molecule correlation functions in the interacting fluid. Renormalized expansions are also obtained for a generalized Ornstein-Zernicke (OZ) direct correlation function and for intramolecular correlation functions. The application of the formalism to coarse-grained models of polymer fluids is discussed, and a loop expansion about self-consistent field theory is shown to converge for sufficiently coarse-grained models, in which monomers are strongly overlapping. The formalism is used to derive a new expression for the OZ direct correlation function and to recover known results for the 2-point intramolecular correlation function to first order in a loop expansion, for binary blends and diblock copolymer melts.
description: 98 pages, 13 figures, accepted by Annals of Physics
Textual Representations for Corpus-Based Bilingual Retrieval
Creators: name: McNamee, Paul
Publisher: name: Maryland Shared Open Access Repository
Year: 2008
Subjects: Character N-gram Tokenization, Cross-Language Information Retrieval, Information Retrieval, Parallel Corpora, Text Processing, Text Retrieval, Computer Science (0984)

description: The traditional approach to information retrieval is based on using words as the indexing and search terms for documents. However, word-based representations have difficulty addressing morphological processes that confound retrieval, such as inflection, derivation, and compounding. One part of this research investigates alternative methods for representing text, including a method based on overlapping sequences of characters called n-gram tokenization. N-grams are studied in depth and one notable finding is that they achieve a 20% improvement in retrieval effectiveness over words in certain situations.   The other focus of this research is improving retrieval performance when foreign language documents must be searched and translation is required. In this scenario bilingual dictionaries are often used to translate user queries; however even among the most commonly spoken languages, for which large bilingual lexicons exist, dictionary-based translation suffers from several significant problems. These include: difficulty handling proper names, which are often missing; issues related to morphological variation since entries, or query terms, may not be lemmatized; and, an inability to robustly handle multiword phrases, especially non-compositional expressions. These problems can be addressed when translation is accomplished using parallel collections, sets of documents available in more than one language. Using parallel texts enables statistical translation of character n-grams rather than words or stemmed words, and with this technique highly effective bilingual retrieval performance is obtained.  In this dissertation I present an overview of the field of cross-language information retrieval and then introduce the foundational concepts in n-gram tokenization and corpus-based translation. Then monolingual and bilingual experiments on test sets in 13 languages are described. Analysis of these experiments gives insight into: the relative efficacy of various tokenization methods; reasons for the effectiveness of n-grams; the utility of automated relevance feedback, in both monolingual and bilingual contexts; the interplay between tokenization and translation; and, how translation resource selection and size influence bilingual retrieval.
DEP Bulletin - 2025 - Volume 49 Issue 2
Creators: name: No Name Supplied
Publisher: name: No Publisher Supplied
Year: 2025

description: The DEP bulletin is a semi-monthly publication of the New Jersey Department of Environmental Protection. It contains a list of construction permit applications recently filed or acted upon by the Department along with a calendar of events of interest, a schedule of public hearings, and Environmental Impact Statements acted upon during the period.
title: Marketplaces for Digital Data: Quo Vadis?
Creators: name: Stahl, Florian
name: Schomm- von Auenmüller, Fabian
name: Vomfell, Lara
name: Vossen, Gottfried
Publisher: name: University of Muenster, Institutional Repository MIAMI
Year: 2024
Subjects: subject: 004 Computer science
subject: 330 Economics

description: The newly emerging market for data is insufficiently researched up to now. The survey presented
in this work - which is the third iteration of a a series of studies that started in 2012 - intends to
provide a deeper understanding of this emerging type of market. Research questions concerning
the provider manifestations and the commoditization of data are identified. The findings indicate
that data providers focus on limited business models and that data remains individualized and
differentiated. Nevertheless, a trend towards commoditization for certain types of data can be
foreseen, which even allows an outlook to further developments in this area.
description: 1 Introduction ..... 4
2 Methodology ..... 5
2.1 Provider Definition ..... 5
2.2 Provider Acquisition ..... 6
2.3 Limitations ..... 7
2.4 Statistical Analysis Methods ..... 7
3 Findings ..... 9
3.1 Dimension Results in Histograms ..... 9
3.2 Statistics ..... 17
4 Trends ..... 21
4.1 Previous Surveys ..... 21
4.2 Global Trends ..... 21
4.3 Emerging Scenarios ..... 24
5 Conclusions ..... 25
Covariant density functional theory for nuclear chirality in $^{135}$Nd
Creators: name: Peng, J.
name: Chen, Q. B.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Nuclear Theory (nucl-th)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The three-dimensional tilted axis cranking covariant density functional theory (3D-TAC CDFT) is used to study the chiral modes in $^{135}$Nd. By modeling the motion of the nucleus in rotating mean field as the interplay between the single-particle motions of several valence particle(s) and hole(s) and the collective motion of a core-like part, a classical Routhian is extracted. This classical Routhian gives qualitative agreement with the 3D-TAC CDFT result for the critical frequency corresponding to the transition from planar to aplanar rotation. Based on this investigation a possible understanding of tilted rotation appearing in a microscopic theory is provided.
description: 6 pages, 4 figures
Complex maps without invariant densities
Creators: name: Bruin, Henk
name: Todd, Mike
Publisher: name: arXiv
Year: 2006
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 37F35; 37F10; 37C40; 37D35; 37F25

description: We consider complex polynomials $f(z) = z^\ell+c_1$ for $\ell \in 2\N$ and $c_1 \in \R$, and find some combinatorial types and values of $\ell$ such that there is no invariant probability measure equivalent to conformal measure on the Julia set. This holds for particular Fibonacci-like and Feigenbaum combinatorial types when $\ell$ sufficiently large and also for a class of `long-branched' maps of any critical order.
description: Typos corrected, minor changes, principally to Section 6
Completeness, special functions and uncertainty principles over q-linear grids
Creators: name: Abreu, Luis Daniel
Publisher: name: arXiv
Year: 2006
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 05A30, 33D45, 42C30, 94A11

description: We derive completeness criteria for sequences of functions of the form $% f(xλ_{n})$, where $λ_{n}$ is the $nth$ zero of a suitably chosen entire function. Using these criteria, we construct systems of nonorthogonal Fourier-Bessel functions and their $q$-analogues, as well as other complete sets of $q$-special functions. The completeness of certain sets of $q$-Bessel functions is then used to prove that, if a function $f$ and its $q$-Hankel transform both vanish at the points $\{q^{-n}\}_{n=1}^{% \infty}$, $0
description: 15 pages, final version (first and second introductory paragraphs switched, an easier proof of the last theorem)
Text Based Similarity Metrics and Delta for Semantic Web Documents
Creators: name: Koduvayur Viswanathan, Krishnamurthy
Publisher: name: Maryland Shared Open Access Repository
Year: 2010
Subjects: delta
diff
metrics
semantic search
semantic web
similarity

description: Recognizing that two semantic web documents or graphs are similar, and characterizing their differences is useful in many tasks, including retrieval, updating, version control and knowledge base editing. We describe a number of text based similarity metrics that characterize the relation between semantic web graphs and evaluate these metrics for three specific cases of similarity that we have identified: similarity in classes and properties used while differing only in literal content, difference only in base-URI, and versioning relationship. In addition to determining the similarity between two Semantic Web graphs, we generate a 'delta' between graphs that have been identified as having a versioning relationship. The delta consists of triples to be added or removed from one to make them equivalent. This method takes into account the text of the RDF graph's serialization as a document, rather than relying solely on the document URI. We have prototyped these techniques in a system that we call similis. We have evaluated our system on several tasks using a collection of graphs from the archive of the Swoogle Semantic Web search engine.
Karl Barths Tambacher Vortrag "Der Christ in der Gesellschaft" (1919)
Creators: name: Li, Zhixiong
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 69 Nr. 2 (2020): Ökumenische Rundschau, Band 69, Heft 2
Enhanced annealing, high Curie temperature and low-voltage gating in (Ga,Mn)As: A surface oxide control study
Creators: name: Olejnik, K.
name: Owen, M. H. S.
name: Novak, V.
name: Masek, J.
name: Irvine, A. C.
name: Wunderlich, J.
name: Jungwirth, T.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: (Ga,Mn)As and related diluted magnetic semiconductors play a major role in spintronics research because of their potential to combine ferromagnetism and semiconducting properties in one physical system. Ferromagnetism requires ~1-10% of substitutional Mn_Ga. Unintentional defects formed during growth at these high dopings significantly suppress the Curie temperature. We present experiments in which by etching the (Ga,Mn)As surface oxide we achieve a dramatic reduction of annealing times necessary to optimize the ferromagnetic film after growth, and report Curie temperature of 180 K at approximately 8% of Mn_Ga. Our study elucidates the mechanism controlling the removal of the most detrimental, interstitial Mn defect. The limits and utility of electrical gating of the highly-doped (Ga,Mn)As semiconductor are not yet established; so far electric-field effects have been demonstrated on magnetization with tens of Volts applied on a top-gate, field effect transistor structure. In the second part of the paper we present a back-gate, n-GaAs/AlAs/GaMnAs transistor operating at a few Volts. Inspired by the etching study of (Ga,Mn)As films we apply the oxide-etching/re-oxidation procedure to reduce the thickness (arial density of carriers) of the (Ga,Mn)As and observe a large enhancement of the gating efficiency. We report gatable spintronic characteristics on a series of anisotropic magnetoresistance measurements.
description: 13 pages, 4 figures
Stellungnahme des Rates der Evangelischen Kirche in Deutschland (EKD) angesichts der Debatte um die "Boycott, Divestment and Sanctions"-Bewegung (BDS)
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 69 Nr. 2 (2020): Ökumenische Rundschau, Band 69, Heft 2
First-principles derivation of density functional formalism for quenched-annealed systems
Creators: name: Lafuente, Luis
name: Cuesta, Jose A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We derive from first principles (without resorting to the replica trick) a density functional theory for fluids in quenched disordered matrices (QA-DFT). We show that the disorder-averaged free energy of the fluid is a functional of the average density profile of the fluid as well as the pair correlation of the fluid and matrix particles. For practical reasons it is preferable to use another functional: the disorder-averaged free energy plus the fluid-matrix interaction energy, which, for fixed fluid-matrix interaction potential, is a functional only of the average density profile of the fluid. When the matrix is created as a quenched configuration of another fluid, the functional can be regarded as depending on the density profile of the matrix fluid as well. In this situation, the replica-Ornstein-Zernike equations which do not contain the blocking parts of the correlations can be obtained as functional identities in this formalism, provided the second derivative of this functional is interpreted as the connected part of the direct correlation function. The blocking correlations are totally absent from QA-DFT, but nevertheless the thermodynamics can be entirely obtained from the functional. We apply the formalism to obtain the exact functional for an ideal fluid in an arbitrary matrix, and discuss possible approximations for non-ideal fluids.
description: 19 pages, uses RevTeX 4
Anatomy of Quantum Biology .pdf
Creators: name: Mishack Osadebe
Publisher: name: figshare
Year: 2021
Subjects: subject: 20101 Astrobiology
subject: FOS: Physical sciences
subject: Astrophysics
subject: Cosmology
subject: 20103 Cosmology and Extragalactic Astronomy
subject: Solar System, Solar Physics, Planets and Exoplanets
subject: 20109 Space and Solar Physics
subject: Space Science
subject: Biophysics
subject: Atomic Physics
subject: General Relativity
subject: 20203 Particle Physics
subject: Quantum Mechanics
subject: Special Relativity

description: Throughout history, equations have been pulling the strings of society and are the lifeblood of mathematics, science, and technology. While equations have a reputation for being scary, formal, austere, and look complicated, without them, our world would not exist in its present form. The almanac of the equation 2+2=2×2 introduces new and provocative research that advances our understanding of Quantum Biology. Inunderstandable language and cutting-edge insights based on compelling evidence that shows that quantum biology plays a more important role other than those imposed by the environment, the strong correspondence of its roles to specific features assessable to its counterpart in physics while displacing it from the accepted locus as the aftermath of quantum mechanics is the basic theme of this research.
Test-cost Sensitive Regression for Planner Runtime Prediction
Creators: name: Wilson, Bandon
Publisher: name: Maryland Shared Open Access Repository
Year: 2008
Subjects: Computer Science(0984)
regression
planning
machine learning
cost-sensitive learning
feature acquisition

description: In many domains, such as medical diagnosis, obtaining the complete set of feature values for a test instance is impractical due to the costs associated with the features. Test costs can arise in various forms depending on the problem domain. For instance, in the medical domain, the test costs are typically monetary. Traditional machine learning algorithms focus on the single objective of minimizing error, assuming all features are ``free,'' even though they often are not. Learning in the presence of test costs introduces a second objective for the learner to satisfy: minimizing cumulative test costs. This thesis focuses on solving the dual-objective learning problem for regression using a greedy feature acquisition approach. The approach in this thesis sequentially acquires features of a test instance in the order that is expected to provide the greatest reduction in prediction error per unit cost. This method can be applied to any regression algorithm given a dataset and the test costs associated with each feature. With this approach, greater accuracy can be achieved by acquiring less than the complete set of features for a test instance. Experimental analysis compares the benefits of cost-sensitive attribute acquisition against that of random and cheapest-first selection.
Vacuum magnetic fields with exact quasisymmetry near a flux surface. Part 1: Solutions near an axisymmetric surface
Creators: name: Sengupta, Wrick
name: Paul, Elizabeth J.
name: Weitzner, Harold
name: Bhattacharjee, Amitava
Publisher: name: arXiv
Year: 2020
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: While several results have pointed to the existence of exactly quasisymmetric fields on a surface (Garren & Boozer 1991a,b; Plunk & Helander 2018), we have obtained the first such solutions using a vacuum surface expansion formalism. We obtain a single nonlinear parabolic PDE for a function $η$ such the field strength satisfies $B = B(η)$. Closed-form solutions are obtained in cylindrical, slab, and isodynamic geometries. Numerical solutions of the full nonlinear equations in general axisymmetric toroidal geometry are obtained, resulting in a class of quasi-helical local vacuum equilibria near an axisymmetric surface. The analytic models provide additional insight into general features of the nonlinear solutions, such as localization of the surface perturbations on the inboard side.
Dynamic mechanical response of airway mucosal membrane
Creators: name: Wang, Lu
Publisher: name: University of British Columbia
Year: 2009

description: Folding of the mucosal membrane of the airways during bronchoconstriction can provide an elastic load [Lambert 1991, 1994] which impedes the airway smooth muscle shortening. The mechanical properties of the membrane, both in tension and in compression, are needed to quantify this load. To measure the mechanical properties of the airway mucosal membrane in tension, a high accuracy stress-strain-time apparatus was designed and constructed. 40 New Zealand White female rabbits of ages between 2 and 35 months were studied for the mechanical response of the airway mucosal membrane. A pair of membrane strips (one in the circumferential, the other in the longitudinal direction of the airway) were dissected from each trachea and mounted in the apparatus. Static uniaxial tensile tests, sinusoidal oscillations and pulse tests were used to measure the steady-state stiffness as well as the frequency response of the membrane in tension. The results of the pulse tests were fitted to a Kelvin model, from which the elastic component, viscous component and the time constants were calculated. The tested strips were histologically processed after the mechanical experiments. The elastic fiber orientation in the airways was measured using a new geometrical approach. The volume fraction of the elastic fibers in the mucosal membrane was measured using the classical point counting technique. Statistically significant linear relationships were found between the Kelvin model parameters and the morphometrical measurements. In summary, the rabbit airway mucosal membrane is viscoelastic. Age (2-35 months) has no statistically significant effect on either the mechanical properties of the membrane or the morphometrically measured parameters of the elastic fibers. The membrane is stiffer in the longitudinal than in the circumferential direction of the airway. The volume fraction of the elastic fibers is linearly related to the steady-state stiffness of the membrane. The viscous component in the dynamic response is inversely related to the percentage of the fibers that have components in both circumferential and longitudinal directions (wavy fibers). The time constants are proportional to the percentage of the wavy fibers.
Super coset space geometry
Creators: name: Kleppe, A. F.
name: Wainwright, Chris
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Super coset spaces play an important role in the formulation of supersymmetric theories. The aim of this paper is to review and discuss the geometry of super coset spaces with particular focus on the way the geometrical structures of the super coset space G/H are inherited from the super Lie group G. The isometries of the super coset space are discussed and a definition of Killing supervectors - the supervectors associated with infinitesimal isometries - is given that can be easily extended to spaces other than coset spaces.
description: 49 pages, 1 figure, AFK previously published under the name A. F. Schunck
Multiple Roles of AIP6 in Developmental Regulation of Arabidopsis
Creators: name: Jagdeo, Malini Mahadai
Publisher: name: Maryland Shared Open Access Repository
Year: 2011

description: Genetic studies have implicated the abscisic acid (ABA) transducing factors ABI3, ABI4 and ABI5, in responses to high sugar-induced stress and ABA.  Although ABI3 mRNA and protein expression are confined mainly to late embryogenesis, analyses of abi3 mutants indicate the gene functions also during vegetative development.  Using the yeast two-hybrid system we identified ABI3 Interacting Protein 6 (AIP6, At3g05545) as a possible regulator of ABI3 function.  AIP6 is a RING-type, E3 ubiquitin protein ligase with demonstrated E3 activity in vitro.  Our lab has shown that epitope-tagged, full-length AIP6 and ABI3 form a complex in vivo, in yeast and in planta (L. Host et al, 2007).  In order to define the function of AIP6 in planta, homozygous aip6 mutant alleles (T DNA insertion) were characterized.  Homozygous aip6 alleles show an increase in seed dormancy and sensitivity to inhibition of germination by ABA, delayed flowering time under short day conditions but not under long day conditions, and an increase in ABI3 protein levels when compared to the wild-type (Col-O) control.  All these traits are consistent with enhanced activity of ABI3 and possibly an ABI3-related factor, indicative of a role for AIP6 as a negative regulator of ABI3.  Massively Parallel Signature Sequencing (MPSS) and Tilling array demonstrates that AIP6 is expressed ubiquitously in Arabidopsis suggesting multiple targets and possibly multiple roles during plant development.
Forcing and Symmetry
Creators: name: Buchanan, Ryan J.
Publisher: name: Zenodo
Year: 2024
Subjects: mirror symmetry
set theory
topology
logic
math
pure mathematics

description: Topological vector spaces ($TVS$) may analogues of set-theoretic forcing notions. These allow for some surprisingly profound symmetries in the constructible case. Here, we explore uniform and symmetric topological spaces which exhibit these symmetries.
Narrow Line Photoassociation in an Optical Lattice
Creators: name: Zelevinsky, T.
name: Boyd, M. M.
name: Ludlow, A. D.
name: Ido, T.
name: Ye, J.
name: Ciurylo, R.
name: Naidon, P.
name: Julienne, P. S.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: With ultracold $^{88}$Sr in a 1D magic wavelength optical lattice, we performed narrow line photoassociation spectroscopy near the $^1$S$_0 - ^3$P$_1$ intercombination transition. Nine least-bound vibrational molecular levels associated with the long-range $0_u$ and $1_u$ potential energy surfaces were measured and identified. A simple theoretical model accurately describes the level positions and treats the effects of the lattice confinement on the line shapes. The measured resonance strengths show that optical tuning of the ground state scattering length should be possible without significant atom loss.
description: 4 pages, 4 figures
Laser Phase Noise Tolerance of Uniform and Probabilistically-shaped QAM Signals for High Spectral Efficiency Systems
Creators: name: Sasai, Takeo
name: Matsushita, Asuka
name: Nakamura, Masanori
name: Okamoto, Seiji
name: Hamaoka, Fukutaro
name: Kisaka, Yoshiaki
Publisher: name: arXiv
Year: 2020
Subjects: subject: Signal Processing (eess.SP)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: We numerically and experimentally investigate the laser phase noise tolerance of probabilistically shaped (PS) and uniformly shaped (US) quadrature amplitude modulation (QAM) signals. In the simulations, we compare PS-64QAM to US-16QAM, PS-256QAM to US-64QAM, and PS-1024QAM to US-256QAM under the same information rate (IR). We confirm that a sufficient shaping gain is observed with narrow linewidth lasers, whereas degradation of the shaping gain is clearly observed when large phase noise and high order modulation formats are assumed. In our experiments, we compare polarization-division-multiplexed (PDM) 16-GBd PS-1024QAM and US-256QAM under the same IR using lasers with 0.1-kHz and 40-kHz linewidths. For carrier phase recovery (CPR), we employ a pilot-assisted digital phase locked loop. Results reveal that PS-1024QAM achieves high performance with the 0.1 kHz-laser or > 5% pilot ratio, whereas US-256QAM outperforms PS-1024QAM when lasers with 40-kHz linewidth and < 5% pilot ratio are used. We also evaluate the pilot ratio dependency of the required optical signal-to-noise ratio at the forward error correction limit and the achievable information rate. Additionally, we compare the performance of two types of CPR updating schemes: updating phase estimation at only the pilot symbol or at all symbols.
description: Accepted version for Journal of Lightwave Technology
Διερεύνηση μεθόδων διατήρησης γονιμότητας σε γυναίκες με καρκίνο
Creators: name: Παππού, Παναγιώτα Ιωάννη
Publisher: name: Aristotle University of Thessaloniki
Year: 2024
Subjects: Αντικαρκινική θεραπεία
Μειωμένη αναπαραγωγική ικανότητα
Μέθοδοι διατήρησης γονιμότητας
Cancer treatment
Reduced reproductive ability
Fertility preservation methods

description: Η παρούσα διπλωματική εργασία διερευνά τις τυχόν δυσμενείς επιπτώσεις των διαφόρων αντικαρκινικών θεραπευτικών προσεγγίσεων στη γονιμότητα, καθώς και τις σύγχρονες τεχνικές και τις προκλήσεις που ανακύπτουν κατά τη διατήρηση της αναπαραγωγικής ικανότητας στις γυναίκες με κακοήθη νεοπλασία. Η εξελικτική πορεία που έχει καταγράψει η επιστήμη της ιατρικής έχει οδηγήσει στην εφαρμογή ποικίλων μεθόδων διατήρησης της γονιμότητας για τις γυναίκες που έχουν υποβληθεί σε αντικαρκινική θεραπεία η οποία συντέλεσε στη μείωση ή απώλεια της αναπαραγωγικής τους ικανότητας. Η εφαρμογή των πρωτοκόλλων διέγερσης των ωοθηκών, η in vitro ωρίμανση ωαρίων, η κρυοσυντήρηση ωοθηκικού ιστού και η χειρουργική μετάθεση των ωοθηκών αποτελούν διαθέσιμες επιλογές διατήρησης της γονιμότητας. Εξατομίκευση των μεθόδων αυτών μπορεί να επιτευχθεί ανάλογα με την επιλεχθείσα αντικαρκινική θεραπεία, την ηλικία και την επιθυμία των γυναικών με καρκίνο για διατήρηση της γονιμότητας. Αναλύεται επίσης η επίδραση της θεραπείας στη γονιμότητα των γυναικών αναπαραγωγικής ηλικίας καθώς και οι προκλήσεις που αντιμετωπίζουν οι ανήλικες ασθενείς με καρκίνο. Σκοπός της παρούσας διπλωματικής εργασίας αποτελεί η διερεύνηση των ανωτέρω μεθόδων για κάθε γυναίκα που επιθυμεί τη διατήρηση της ικανότητας τεκνοποίησης μετά το πέρας του καρκίνου.
description: The present dissertation investigates the impact of various cancer therapeutic approaches on fertility, as well as the modern techniques and challenges arising in maintaining reproductive capacity. The evolutionary progress recorded in the field of medicine has led to the implementation of various fertility preservation methods for women who have undergone cancer treatment that has resulted in the reduction or loss of their reproductive ability. The application of ovarian stimulation protocols, in vitro maturation of oocytes, cryopreservation of ovarian tissue, and surgical ovarian transposition are available options for fertility preservation. Customization of these methods can be achieved depending on the selected cancer therapy, patient’s age, and desires for fertility preservation. Additionally, the impact of treatment on the fertility of reproductive-age women and the challenges faced by adolescent patients are analyzed. The aim of this dissertation is to explore the above methods for any woman desiring to preserve fertility after their cancer treatment.
System of Bound Particles for Interactive Flow Visualization
Creators: name: Decker, Jonathan Willard
Publisher: name: Maryland Shared Open Access Repository
Year: 2008
Subjects: Computer Science (0984)
particle tracing
mass-spring systems
visualization
stream lines
vector fields
computation fluid dynamics

description: Vector fields are complex data sets used by a variety of research fields. They contain directional information at every point in space, and thus simply rendering one as a body of vectors to a screen obfuscates any inherent meaning. One common method for visualizing this data is particle tracing, where a large numbers of particles are placed and transported through the field. This method simulates real experiments on fluid and storms, where the probes provide a speckled outline of features of interest. However, since particles are simply points in space, the effect is closer to that of casting a dye into the flow. We are not able to perceive the 3D formation of the mixed elements without observing the flow from several directions at once. We present a particle system where each individual element is actually a series of bound particles that move together as one, and can be rendered together as complex shapes. By deploying these probes into a field, the effect of the flow on the structure of each element as well as its rotation enables the viewer to immediately observe the characteristics of the flow field. This includes complex features such as vortices, visible in the tumbling behavior of the probes through the field. We enhance this visualization by providing various schemes of surface shading to express interesting information. We demonstrate our method on steady and unsteady flow fields, and provide evaluation by an domain expert.
Thermodynamics of Einstein-Born-Infeld black holes with negative cosmological constant
Creators: name: Miskovic, Olivera
name: Olea, Rodrigo
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study the thermodynamics associated to topological black hole solutions of AdS gravity coupled to nonlinear electrodynamics (Born-Infeld) in any dimension, using a background-independent regularization prescription for the Euclidean action given by boundary terms which explicitly depend on the extrinsic curvature (Kounterterms series). A finite action principle leads to the correct definition of thermodynamic variables as Noether charges, which satisfy a Smarr-like relation. In particular, for the odd-dimensional case, a consistent thermodynamic description is achieved if the internal energy of the system includes the vacuum energy for AdS spacetime.
description: 29 pages, no figures; additional comments on extreme black hole case, a few references added; final version for PRD
Extinction Curves of Lensing Galaxies out to z=1
Creators: name: Elíasdóttir, Árdís
name: Hjorth, Jens
name: Toft, Sune
name: Burud, Ingunn
name: Paraficz, Danuta
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a survey of the extinction properties of ten lensing galaxies, in the redshift range z = 0.04 - 1.01, using multiply lensed quasars imaged with the ESO VLT in the optical and near infrared. The multiple images act as 'standard light sources' shining through different parts of the lensing galaxy, allowing for extinction studies by comparison of pairs of images. We explore the effects of systematics in the extinction curve analysis, including extinction along both lines of sight and microlensing, using theoretical analysis and simulations. In the sample, we see variation in both the amount and type of extinction. Of the ten systems, seven are consistent with extinction along at least one line of sight. The mean differential extinction for the most extinguished image pair for each lens is A(V) = 0.56 +- 0.04, using Galactic extinction law parametrization. The corresponding mean R_V = 2.8 +- 0.4 is consistent with that of the Milky Way at R_V = 3.1, where R_V = A(V)/E(B-V). We do not see any strong evidence for evolution of extinction properties with redshift. Of the ten systems, B1152+199 shows the strongest extinction signal of A(V) = 2.43 +- 0.09 and is consistent with a Galactic extinction law with R_V = 2.1 +- 0.1. Given the similar redshift distribution of SN Ia hosts and lensing galaxies, a large space based study of multiply imaged quasars would be a useful complement to future dark energy SN Ia surveys, providing independent constraints on the statistical extinction properties of galaxies up to z~1.
description: 24 pages, 27 figures, 17 tables, accepted for publication in ApJS
Observation of robust edge superconductivity in Fe(Se,Te) under strong magnetic perturbation
Creators: name: Jiang, Da
name: Pan, Yinping
name: Wang, Shiyuan
name: Lin, Yishi
name: Holland, Connor M.
name: Kirtley, John R.
name: Chen, Xianhui
name: Zhao, Jun
name: Chen, Lei
name: Yin, Shaoyu
name: Wang, Yihua
Publisher: name: arXiv
Year: 2021
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The iron-chalcogenide high temperature superconductor Fe(Se,Te) (FST) has been reported to exhibit complex magnetic ordering and nontrivial band topology which may lead to novel superconducting phenomena. However, the recent studies have so far been largely concentrated on its band and spin structures while its mesoscopic electronic and magnetic response, crucial for future device applications, has not been explored experimentally. Here, we used scanning superconducting quantum interference device microscopy for its sensitivity to both local diamagnetic susceptibility and current distribution in order to image the superfluid density and supercurrent in FST. We found that in FST with 10% interstitial Fe, whose magnetic structure was heavily disrupted, bulk superconductivity was significantly suppressed whereas edge still preserved strong superconducting diamagnetism. The edge dominantly carried supercurrent despite of a very long magnetic penetration depth. The temperature dependence of the superfluid density and supercurrent distribution were distinctively different between the edge and the bulk. Our Heisenberg modeling showed that magnetic dopants stabilize anti-ferromagnetic spin correlation along the edge, which may contribute towards its robust superconductivity. Our observations hold implication for FST as potential platforms for topological quantum computation and superconducting spintronics.
Swarm Robotics: Parallelized Line Formation
Creators: name: Feldman, Alexander
Publisher: name: Maryland Shared Open Access Repository
Year: 2008
Subjects: Algorithm
Formation
Line
Parallelized
Robotics
Swarm
Computer Science (0984)
Engineering, Robotics (0771)

description: Swarm robotics is a fast growing field, where robots come together to collectively tackle tasks difficult to achieve otherwise. Physical connection is a common requirement, where a particular shape is desired. A line is one of the more common shapes, and leading research in the field demonstrates a line built sequentially, one robot at a time. This thesis discusses methods for significantly speeding up line formation by assigning the robots in parallel. A comprehensive approach is discussed. In order to reduce robot travel times, a regression line calculation is proposed. A total of seven different algorithms are presented, which assign the robots to the calculated line. A simulation environment is utilized to test run the proposed algorithms. Simulation results are compared against each other to draw performance conclusions, and select a winning algorithm.
e+e- pair production in ultrarelativistic heavy-ion collisions at intermediate impact parameters
Creators: name: Lee, R. N.
name: Milstein, A. I.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Using the quasiclassical Green's function in the Coulomb field, we analyze the probabilities of single and multiple $e^+e^-$-pair production at fixed impact parameter $b$ between colliding ultrarelativistic heavy nuclei. We perform calculations in the Born approximation with respect to the parameter $Z_Bα$, and exactly in $Z_Aα$, $Z_{A}$ and $Z_{B}$ are the charge numbers of the corresponding nuclei. We also obtain the approximate formulas for the probabilities valid for $Z_Aα, Z_Bα\lesssim 1$.
description: 15 pages, 2 figures, 1 table
A powerful hydrodynamic booster for relativistic jets
Creators: name: Aloy, Miguel A.
name: Rezzolla, Luciano
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Velocities close to the speed of light are a robust observational property of the jets observed in microquasars and AGNs, and are expected to be behind much of the phenomenology of GRBs. Yet, the mechanism boosting relativistic jets to such large Lorentz factors is still essentially unknown. Building on recent general-relativistic, multidimensional simulations of progenitors of short GRBs, we discuss a new effect in relativistic hydrodynamics which can act as an efficient booster in jets. This effect is purely hydrodynamical and occurs when large velocities tangential to a discontinuity are present in the flow, yielding Lorentz factors $Γ\sim 10^2-10^3$ or larger in flows with moderate initial Lorentz factors. Although without a Newtonian counterpart, this effect can be explained easily through the most elementary hydrodynamical flow: i.e., a relativistic Riemann problem.
description: 4 pages, 4 figures (1 in color). ApJ Letters accepted
On the compatibility of the topologies of parallel tasks and computing systems
Creators: name: Zadorozhny, A. F.
name: Melent'ev, V. A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: Discrete Mathematics (cs.DM)
subject: Combinatorics (math.CO)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics
subject: 05C62, 05C60, 68R10

description: Aspects of compatibility of topologies of parallel computing systems and tasks are investigated. The introduction of appropriate indexes based on the original topological model of parallel computations and on the nontraditional description of a graph by its projections is proposed and elucidated. On the example of hypercubic computing system (CS) and tasks with ring and star information topologies, we demonstrate determining the indexes and their use in a comparative analysis of the applicability of interconnect with a given topology for solving tasks with the same and different types of information topologies.
The Perplexing Problem of Persistently PCR-Positive Personnel
Creators: name: Malani, A.
name: Babcock, H.
name: Murthy, A.R.
name: Van Schooneveld, T.
name: Weber, D.J.
name: Rock, C.
name: Henderson, D.K.
name: Wright, S.B.
name: Haessler, S.
name: Logan, L.K.
name: Guzman-Cottrill, J.
name: Forde, C.A.
name: Hayden, M.K.
Publisher: name: Cambridge University Press
Year: 2020

description: Early in the coronavirus disease 2019 (COVID-19) pandemic, the Centers for Disease Control and Prevention (CDC) published return-to-work criteria for healthcare personnel who had recovered from severe acute respiratory coronavirus virus 2 (SARS-CoV-2) infection. These criteria were most recently updated on April 3, 2020.1 The CDC has endorsed 2 different approaches to allow staff to return to work: a symptom or time-based strategy and a test-based strategy. Many institutions initially adopted the test-based strategy, in part because CDC initially recommended it as the preferred option (but no longer does so) and, in part, because it seemed the more definitive or conservative of the 2 CDC options.
Παραπληροφόρηση στα ψηφιακά μέσα κοινωνικής δικτύωσης & η στρατηγική και νομοθετική αντιμετώπιση της από την Ευρωπαϊκή Ένωση
Creators: name: Δαμαλίτης, Άγγελος-Σπήλιος
Publisher: name: Πανεπιστήμιο Πειραιώς
Year: 2024
Subjects: subject: Παραπληροφόρηση
subject: Ευρωπαϊκή Ένωση
subject: Fact checking
subject: Social media
subject: DSA
subject: Ελεγκτές γεγονότων
subject: Disinformation
subject: Elections

description: Η Παραπληροφόρηση στις μέρες μας έχει λάβει τεράστιες διαστάσεις. Η διαρκώς αυξανόμενη χρησιμοποίηση των μέσων κοινωνικής δικτύωσης, που αποτελούν μία σημαντική πηγή πληροφόρησης στην καθημερινότητα των ανθρώπων, έχουν συμβάλει στην αύξηση του φαινομένου. Στον απόηχο σημαντικών εκλογικών αναμετρήσεων έγινε κατανοητό ότι μέσω των γενικευμένων εκστρατειών παραπληροφόρησης και ψευδών ειδήσεων μπορεί να υπάρξει επίδραση προς τους πολίτες. Τα κράτη σε αυτό τον απόηχο έχουν προσπαθήσει με δικές τους πρωτοβουλίες να αντιμετωπίσουν το φαινόμενο και να οριοθετήσουν τις μεγάλες πλατφόρμες κοινωνικής δικτύωσης, άλλοτε πιο αυστηρά και άλλοτε με πιο μετριοπαθή τρόπο. Παράλληλα η Ευρωπαϊκή Ένωση έχει προβεί σε σειρές πρωτοβουλιών αντιμετώπισης της παραπληροφόρησης με ταυτόχρονη αξιολόγηση παλαιότερων πρωτοβουλιών που δεν αποδείχτηκαν μακροπρόθεσμα αποτελεσματικές. Επιπρόσθετα προβληματισμός υπάρχει, όταν απομακρύνεται ύποπτο περιεχόμενο ψευδών ειδήσεων με το αντεπιχείρημα της καταπάτησης της ελευθερίας λόγου. Πράγματι υπάρχει αυτό το λεπτό όριο που εξετάζεται εις βάθος σε αυτή την Διπλωματική Εργασία. Τέλος σημαντικό ρόλο στην καταπολέμηση του φαινομένου έχουν κληθεί να αναλάβουν οι ελεγκτές γεγονότων. Στην Διπλωματική εργασία πραγματοποιείται ανάλυση του φαινομένου της Παραπληροφόρησης και των εκφάνσεων της. Γίνεται αναλυτική αναφορά σε νομοθετικές πρωτοβουλίες κρατών με στόχο την αντιμετώπιση του φαινομένου, την προστασία των χρηστών και την οριοθέτηση των πλατφορμών. Αναφορά γίνεται τόσο στην προσπάθεια αυτορρύθμισης των ίδιων των πλατφορμών όσο και σε σημαντικές αποφάσεις Δικαστηρίων σχετικά με το λεπτό όριο στην απομάκρυνση ύποπτου περιεχομένου και στην προάσπιση θεμελιωδών δικαιωμάτων. Παράλληλα αναλύεται η Ευρωπαϊκή Προσπάθεια κατά του φαινομένου λεπτομερώς, ενώ ένα ολόκληρο κεφάλαιο αφορά τον ρόλο που καλούνται να έχουν οι ελεγκτές γεγονότων.
Essays on the disposition effect in a social environment
Creators: name: Liêu, Minh Lý
Publisher: name: Universität Paderborn
Year: 2022

description: This work combines three studies with the aim of investigating how social exposure influences investor behavior. Specifically, the first study answers the question of how an investor behaves upon receiving attention (like/comment) for the first time on their social trading network. The second study investigates the difference in the trading behaviors of investors when applying different frames to the social context. Specifically, we perform an experiment in which two methods of ranking transaction performance are used. The results show that in the two different ranking methods, the trading behavior of investors also changes in the direction of ensuring a high position in the ranking to protect themselves to build their self-images in front of the observations of other group members. The data of the second paper have been made publicly available as part of the open science movement. Finally, the third study focuses on the influence of personality traits on trading behavior in a social context.
description: This work combines three studies with the aim of investigating how social exposure influences investor behavior. Specifically, the first study answers the question of how an investor behaves upon receiving attention (like/comment) for the first time on their social trading network. The second study investigates the difference in the trading behaviors of investors when applying different frames to the social context. Specifically, we perform an experiment in which two methods of ranking transaction performance are used. The results show that in the two different ranking methods, the trading behavior of investors also changes in the direction of ensuring a high position in the ranking to protect themselves to build their self-images in front of the observations of other group members. The data of the second paper have been made publicly available as part of the open science movement. Finally, the third study focuses on the influence of personality traits on trading behavior in a social context.
Charge-$4e$ superconductivity from multi-component nematic pairing: Application to twisted bilayer graphene
Creators: name: Fernandes, Rafael M.
name: Fu, Liang
Publisher: name: arXiv
Year: 2021
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We show that unconventional nematic superconductors with multi-component order parameter in lattices with three-fold and six-fold rotational symmetries support a charge-$4e$ vestigial superconducting phase above $T_c$. The charge-$4e$ state, which is a condensate of four-electron bound states that preserve the rotational symmetry of the lattice, is nearly degenerate with a competing vestigial nematic state, which is non-superconducting and breaks the rotational symmetry. This robust result is the consequence of a hidden discrete symmetry in the Ginzburg-Landau theory, which permutes quantities in the gauge sector and in the crystalline sector of the symmetry group. We argue that random strain generally favors the charge-$4e$ state over the nematic phase, as it acts as a random-mass to the former but as a random-field to the latter. Thus, we propose that two-dimensional inhomogeneous systems displaying nematic superconductivity, such as twisted bilayer graphene, provide a promising platform to realize the elusive charge-$4e$ superconducting phase.
description: 5 pages plus Supplementary Material