cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Agnostic black hole spectroscopy: Quasinormal mode content of numerical relativity waveforms and limits of validity of linear perturbation theory
Creators: name: Baibhav, Vishal
name: Cheung, Mark Ho-Yeuk
name: Berti, Emanuele
name: Cardoso, Vitor
name: Carullo, Gregorio
name: Cotesta, Roberto
name: Del Pozzo, Walter
name: Duque, Francisco
Publisher: name: arXiv
Year: 2023
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Black hole spectroscopy is the program to measure the complex gravitational-wave frequencies of merger remnants, and to quantify their agreement with the characteristic frequencies of black holes computed at linear order in black hole perturbation theory. In a "weaker" (non-agnostic) version of this test, one assumes that the frequencies depend on the mass and spin of the final Kerr black hole as predicted in perturbation theory. Linear perturbation theory is expected to be a good approximation only at late times, when the remnant is close enough to a stationary Kerr black hole. However, it has been claimed that a superposition of overtones with frequencies fixed at their asymptotic values in linear perturbation theory can reproduce the waveform strain even at the peak. Is this overfitting, or are the overtones physically present in the signal? To answer this question, we fit toy models of increasing complexity, waveforms produced within linear perturbation theory, and full numerical relativity waveforms using both agnostic and non-agnostic ringdown models. We find that higher overtones are unphysical: their role is mainly to "fit away" features such as initial data effects, power-law tails, and (when present) nonlinearities. We then identify physical quasinormal modes by fitting numerical waveforms in the original, agnostic spirit of the no-hair test. We find that a physically meaningful ringdown model requires the inclusion of higher multipoles, quasinormal mode frequencies induced by spherical-spheroidal mode mixing, and nonlinear quasinormal modes. Even in this "infinite signal-to-noise ratio" version of the original spectroscopy test, there is convincing evidence for the first overtone of the dominant multipole only well after the peak of the radiation.
description: 52 pages (with a short executive summary), 33 figures, 1 table. Matches version published in PRD
LIDERLIK FENOMENINING NAZARIY-KONSEPTUAL JIHATLARI
Creators: name: Nasirova, Nilufar
Publisher: name: Zenodo
Year: 2025

description: Mazkur maqolada liderlik fenomenining nazariy va konseptual jihatlari o‘rganiladi. Turli siyosiy-nazariy maktablar nuqtai nazaridan liderlik tushunchasining mohiyati tahlil qilinadi. Transformatsion, xarizmatik va institutsional liderlik yondashuvlari asosida liderlikning siyosiy va ijtimoiy kontekstdagi o‘rni ochib beriladi. Shu bilan birga, global va milliy miqyosdagi yetakchilik modellari solishtirilib, zamonaviy siyosiy tizimlarda lider shaxsining ta’sir darajasi aniqlanadi.
Deep Learning Based Object Tracking in Walking Droplet and Granular Intruder Experiments
Creators: name: Kara, Erdi
name: Zhang, George
name: Williams, Joseph J.
name: Ferrandez-Quinto, Gonzalo
name: Rhoden, Leviticus J.
name: Kim, Maximilian
name: Kutz, J. Nathan
name: Rahman, Aminur
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: We present a deep-learning based tracking objects of interest in walking droplet and granular intruder experiments. In a typical walking droplet experiment, a liquid droplet, known as \textit{walker}, propels itself laterally on the free surface of a vibrating bath of the same liquid. This motion is the result of the interaction between the droplets and the surface waves generated by the droplet itself after each successive bounce. A walker can exhibit a highly irregular trajectory over the course of its motion, including rapid acceleration and complex interactions with the other walkers present in the same bath. In analogy with the hydrodynamic experiments, the granular matter experiments consist of a vibrating bath of very small solid particles and a larger solid \textit{intruder}. Like the fluid droplets, the intruder interacts with and travels the domain due to the waves of the bath but tends to move much slower and much less smoothly than the droplets. When multiple intruders are introduced, they also exhibit complex interactions with each other. We leverage the state-of-art object detection model YOLO and the Hungarian Algorithm to accurately extract the trajectory of a walker or intruder in real-time. Our proposed methodology is capable of tracking individual walker(s) or intruder(s) in digital images acquired from a broad spectrum of experimental settings and does not suffer from any identity-switch issues. Thus, the deep learning approach developed in this work could be used to automatize the efficient, fast and accurate extraction of observables of interests in walking droplet and granular flow experiments. Such extraction capabilities are critically enabling for downstream tasks such as building data-driven dynamical models for the coarse-grained dynamics and interactions of the objects of interest.
Experimental Realization of Geometry-Dependent Skin Effect in a Reciprocal Two-Dimensional Lattice
Creators: name: Wang, Wei
name: Hu, Mengying
name: Wang, Xulong
name: Ma, Guancong
name: Ding, Kun
Publisher: name: arXiv
Year: 2023
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: Recent studies of non-Hermitian periodic lattices unveiled the non-Hermitian skin effect (NHSE), in which the bulk modes under the periodic boundary conditions (PBC) become skin modes under open boundary conditions (OBC). The NHSE is a topological effect owing to the non-trivial spectral winding, and such spectral behaviors appear naturally in non-reciprocal systems. Hence prevailing approaches rely on non-reciprocity to achieve the NHSE. Here, we report the experimental realization of the geometry-dependent skin effect (GDSE) in a two-dimensional (2D) reciprocal system, in which the skin effect occurs only at boundaries whose macroscopic symmetry mismatches with the lattice symmetry. The role of spectral reciprocity and symmetry is revealed by connecting reflective channels at given boundaries with the spectral topology of the PBC spectrum. Our work highlights the vital role of reciprocity and macroscopic geometry on the NHSE in systems with dimensions larger than one and opens new routes for wave structuring using non-Hermitian effects.
description: 14 pages, 3 figures
Electronic communication channel use and health information source preferences among Latinos in Northern Manhattan
Creators: name: Hillyer, Grace A.
name: Schmitt, Karen M.
name: Lizardo, Maria
name: Reyes, Andria
name: Bazan, Mercedes
name: Alvarez, Maria C.
name: Sandoval, Rossy
name: Abdul, Kazeem
name: Orjuela, Manuela A.
Publisher: name: Columbia University
Year: 2017
Subjects: subject: Health education
subject: Communication in medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Cancer
subject: Hispanic Americans

description: Understanding key health concepts is crucial to participation in Precision Medicine initiatives. In order to assess methods to develop and disseminate a curriculum to educate community members in Northern Manhattan about Precision Medicine, clients from a local community-based organization were interviewed during 2014–2015. Health literacy, acculturation, use of Internet, email, and text messaging, and health information sources were assessed. Associations between age and outcomes were evaluated; multivariable analysis used to examine the relationship between participant characteristics and sources of health information. Of 497 interviewed, 29.4 % had inadequate health literacy and 53.6 % had access to the Internet, 43.9 % to email, and 45.3 % to text messaging. Having adequate health literacy was associated with seeking information from a healthcare professional (OR 2.59, 95 % CI 1.54–4.35) and from the Internet (OR 3.15, 95 % CI 1.97–5.04); having ≤ grade school education (OR 2.61, 95 % CI 1.32–5.17) also preferred information from their provider; persons >45 years (OR 0.29, 95 % CI 0.18–0.47) were less likely to use the Internet for health information and preferred printed media (OR 1.64, 95 % CI 1.07–2.50). Overall, electronic communication channel use was low and varied significantly by age with those ≤45 years more likely to utilize electronic channels. Preferred sources of health information also varied by age as well as by health literacy and educational level. This study demonstrates that to effectively communicate key Precision Medicine concepts, curriculum development for Latino community members of Northern Manhattan will require attention to health literacy, language preference and acculturation and incorporate more traditional communication channels for older community members.
Velocity renormalization in graphene from lattice Monte Carlo
Creators: name: Drut, Joaquín E.
name: Lähde, Timo A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We compute the Fermi velocity of the Dirac quasiparticles in clean graphene at the charge neutrality point for strong Coulomb coupling alpha_g. We perform a Lattice Monte Carlo calculation within the low-energy Dirac theory, which includes an instantaneous, long-range Coulomb interaction. We find a renormalized Fermi velocity v_FR > v_F, where v_F = c/300. Our results are consistent with a momentum-independent v_FR which increases approximately linearly with alpha_g, although a logarithmic running with momentum cannot be excluded at present. At the predicted critical coupling alpha_gc for the semimetal-insulator transition due to excitonic pair formation, we find v_FR/v_F = 3.3, which we discuss in light of experimental findings for v_FR/v_F at the charge neutrality point in ultra-clean suspended graphene.
description: 7 pages, 2 figures, title changed, to appear in the proceedings of the 31st International Symposium on Lattice Field Theory (LATTICE 2013)
title: Υποκατάσταση ιχθυελαίου από μικροφύκη των ειδών Nannochloropsis sp . και Schizochytrium sp. στο σιτηρέσιο του λαβρακιού (Dicentrarchus labrax): επίδραση στη θρεπτική σύσταση των ιχθύων
titleType: AlternativeTitle
Creators: name: Καζοπίδη, Ευγενία
Publisher: name: University of Thessaly
Year: 2021
Subjects: subject: Ψάρια -- Διατροφή
subject: Ιχθυοτροφές
subject: Σιτηρέσια ως τροφή

description: Σημείωση: διατίθεται συμπληρωματικό υλικό σε ξεχωριστό αρχείο.
title: Υποκατάσταση ιχθυαλεύρου από άλευρο του μικροφύκους Chlorella vulgaris στο σιτηρέσιο του λαβρακιού (Dicentrarchus labrax): επίδραση στη θρεπτική σύσταση των ιχθύων
titleType: AlternativeTitle
Creators: name: Κλειτσογιάννης, Στέφανος
Publisher: name: University of Thessaly
Year: 2021
Subjects: subject: Ψάρια -- Διατροφή
subject: Ιχθυοτροφές
subject: Σιτηρέσια ως τροφή

description: Σημείωση: διατίθεται συμπληρωματικό υλικό σε ξεχωριστό αρχείο.
Change of pairing symmetry in the iron-based superconductor KFe2As2
Creators: name: Tafti, F. F.
name: Juneau-Fecteau, A.
name: Delage, M. -E.
name: de Cotret, S. Rene
name: Reid, J. -Ph.
name: Wang, A. F.
name: Luo, X. -G.
name: Chen, X. H.
name: Doiron-Leyraud, N.
name: Taillefer, Louis
Publisher: name: arXiv
Year: 2013
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The pairing mechanism in iron-based superconductors is the subject of ongoing debate. Proximity to an antiferromagnetic phase suggests that pairing is mediated by spin fluctuations, but orbital fluctuations have also been invoked. The former typically favour a pairing state of extended s-wave symmetry with a gap that changes sign between electron and hole Fermi surfaces (s+-), while the latter yield a standard s-wave state without sign change (s++). Here we show that applying pressure to KFe2As2 induces a change of pairing state. The critical temperature Tc decreases with pressure initially, and then suddenly increases, above a critical pressure Pc. The constancy of the Hall coefficient through Pc rules out a change in the Fermi surface. There is compelling evidence that the pairing state below Pc is d-wave, from bulk measurements at ambient pressure. Above Pc, the high sensitivity to disorder argues for a particular kind of s+- state. The change from d-wave to s-wave is likely to proceed via an unusual s + id state that breaks time-reversal symmetry. The proximity of two distinct pairing states found here experimentally is natural given the near degeneracy of d-wave and s+- states found theoretically. These findings make a compelling case for spin-fluctuation-mediated superconductivity in this key iron-arsenide material.
description: 8 pages, 7 figures, including SI, published in Nature Physics
The Sullivan dictionary and Bowen-Series maps
Creators: name: Mj, Mahan
name: Mukherjee, Sabyasachi
Publisher: name: arXiv
Year: 2023
Subjects: subject: Dynamical Systems (math.DS)
subject: Complex Variables (math.CV)
subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 37F10, 37F32, 30F60, 37D25 (primary), 30C62, 30D05, 30F40, 30J10, 37F31, 57M50 (secondary)

description: The Sullivan dictionary between Kleinian groups and rational dynamics describes striking similarities between the fields, both in terms of the objects of study as well as the techniques used. We give an expository account of a recent bridge between the two sides of the dictionary by describing a framework for combining a Fuchsian group with a complex polynomial into a single dynamical system on the Riemann sphere.
description: 39 pgs, 10 figures. This is an expository paper, partly based on arXiv:2103.00835v1. Some of the examples from arXiv:2103.00835 have now been taken out and moved into the present article. To appear in the 80th birthday volume of Dennis Sullivan, edited by Basmajian, Koberda, Papadopoulos, Seade and Zeinalian, EMS Surveys in Mathematical Sciences
Weak and cyclic amenability for Fourier algebras of connected Lie groups
Creators: name: Choi, Yemon
name: Ghandehari, Mahya
Publisher: name: arXiv
Year: 2013
Subjects: subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 2010: Primary 43A30, Secondary 46J10, 47B47

description: Using techniques of non-abelian harmonic analysis, we construct an explicit, non-zero cyclic derivation on the Fourier algebra of the real $ax+b$ group. In particular this provides the first proof that this algebra is not weakly amenable. Using the structure theory of Lie groups, we deduce that the Fourier algebras of connected, semisimple Lie groups also support non-zero, cyclic derivations and are likewise not weakly amenable. Our results complement earlier work of Johnson (JLMS, 1994), Plymen (unpublished note) and Forrest--Samei--Spronk (IUMJ 2009). As an additional illustration of our techniques, we construct an explicit, non-zero cyclic derivation on the Fourier algebra of the reduced Heisenberg group, providing the first example of a connected nilpotent group whose Fourier algebra is not weakly amenable.
description: v4: AMS-LaTeX, 26 pages. Final version, to appear in JFA. Includes an authors' correction added at proof stage
YouTube videos as a source of information about clinical trials
Creators: name: Hillyer, Grace A.
name: MacLean, Sarah A.
name: Beauchemin, Melissa
name: Basch, Corey H.
name: Schmitt, Karen M.
name: Segall, Leslie E.
name: Kelsen, Moshe A.
name: Brogan, Frances L.
name: Schwartz, Gary K.
Publisher: name: Columbia University
Year: 2018
Subjects: Clinical trials
Cancer--Research
Communication in medicine
Social media

description: Background: Clinical trials are essential to the advancement of cancer treatment but fewer than 5% of adult cancer patients enroll in a trial. A commonly cited barrier to participation is the lack of understanding about clinical trials. Objective: Since the internet is a popular source of health-related information and YouTube is the second most visited website in the world, we examined the content of the top 115 YouTube videos about clinical trials to evaluate clinical trial information available through this medium. Methods: YouTube videos posted prior to March 2017 were searched using selected keywords. A snowballing technique was used to identify videos wherein sequential screening of the autofill search results for each set of keywords was conducted. Video characteristics (eg, number of views and video length) were recorded. The content was broadly grouped as related to purpose, phases, design, safety and ethics, and participant considerations. Stepwise multivariable logistic regression analysis was conducted to assess associations between video type (cancer vs noncancer) and video characteristics and content. Results: In total, 115 videos were reviewed. Of these, 46/115 (40.0%) were cancer clinical trials videos and 69/115 (60.0%) were noncancer/general clinical trial videos. Most videos were created by health care organizations/cancer centers (34/115, 29.6%), were oriented toward patients (67/115, 58.3%) and the general public (68/115, 59.1%), and were informational (79/115, 68.7%); altruism was a common theme (31/115, 27.0%). Compared with noncancer videos, cancer clinical trials videos more frequently used an affective communication style and mentioned the benefits of participation. Cancer clinical trial videos were also much more likely to raise the issue of costs associated with participation (odds ratio [OR] 5.93, 95% CI 1.15-29.46) and advise patients to communicate with their physician about cancer clinical trials (OR 4.94, 95% CI 1.39-17.56). Conclusions: Collectively, YouTube clinical trial videos provided information on many aspects of trials; however, individual videos tended to focus on selected topics with varying levels of detail. Cancer clinical trial videos were more emotional in style and positive in tone and provided information on the important topics of cost and communication. Patients are encouraged to verify and supplement YouTube video information in consultations with their health care professionals to obtain a full and accurate picture of cancer clinical trials to make an adequately informed decision about participation.
Deep Vision in Analysis and Recognition of Radar Data: Achievements, Advancements and Challenges
Creators: name: Liu, Qi
name: Yang, Zhiyun
name: Ji, Ru
name: Zhang, Yonghong
name: Bilal, Muhammad
name: Liu, Xiaodong
name: Vimal, S
name: Xu, Xiaolong
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences
subject: I.2, I.4, I.5

description: Radars are widely used to obtain echo information for effective prediction, such as precipitation nowcasting. In this paper, recent relevant scientific investigation and practical efforts using Deep Learning (DL) models for weather radar data analysis and pattern recognition have been reviewed; particularly, in the fields of beam blockage correction, radar echo extrapolation, and precipitation nowcast. Compared to traditional approaches, present DL methods depict better performance and convenience but suffer from stability and generalization. In addition to recent achievements, the latest advancements and existing challenges are also presented and discussed in this paper, trying to lead to reasonable potentials and trends in this highly-concerned field.
description: This article has been accepted for publication in IEEE Systems, Man and Cybernetics Magazine
title: Nanomechanics and Nanorheology of Microgels at Interfaces
Creators: name: Backes, Sebastian
name: Klitzing, Regine von
Publisher: name: MDPI
Year: 2021

description: The review addresses nanomechanics and nanorheology of stimuli responsive microgels adsorbed at an interface. In order to measure the mechanical properties on a local scale, an atomic force microscope is used. The tip presents an indenter with a radius of curvature of a few 10 s of nm. Static indentation experiments and dynamic studies with an excited cantilever are presented. The effect of several internal and external parameters on the mechanical properties is reviewed. The focus is on the correlation between the swelling abilities of the gels and their mechanical properties. Several results are surprising and show that the relationship is not as simple as one might expect.
title: Μοντελοποίηση της ωριαίας λειτουργίας του συστήματος ηλεκτρικής ενέργειας της Κρήτης πριν και μετά την εισαγωγή υβριδικού σταθμού άντλησης-ταμίευσης 20 MW
Creators: name: Βλάσσης Γεώργιος
Publisher: name: Technical University of Crete
Year: 2009

description: Μη διαθέσιμο
Invertible polynomial mappings via Newton non-degeneracy
Creators: name: Chen, Ying
name: Dias, L. R. G.
name: Takeuchi, Kiyoshi
name: Tibar, Mihai
Publisher: name: arXiv
Year: 2013
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics

description: We prove a sufficient condition for the Jacobian problem in the setting of real, complex and mixed polynomial mappings. This follows from the study of the bifurcation locus of a mapping subject to a new Newton non-degeneracy condition.
description: Final version with some more edits, to be published in Ann. Inst. Fourier (Grenoble). arXiv admin note: substantial text overlap with arXiv:1207.1612
FedScore: A privacy-preserving framework for federated scoring system development
Creators: name: Li, Siqi
name: Ning, Yilin
name: Ong, Marcus Eng Hock
name: Chakraborty, Bibhas
name: Hong, Chuan
name: Xie, Feng
name: Yuan, Han
name: Liu, Mingxuan
name: Buckland, Daniel M.
name: Chen, Yong
name: Liu, Nan
Publisher: name: arXiv
Year: 2023
Subjects: subject: Machine Learning (cs.LG)
subject: Artificial Intelligence (cs.AI)
subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: We propose FedScore, a privacy-preserving federated learning framework for scoring system generation across multiple sites to facilitate cross-institutional collaborations. The FedScore framework includes five modules: federated variable ranking, federated variable transformation, federated score derivation, federated model selection and federated model evaluation. To illustrate usage and assess FedScore's performance, we built a hypothetical global scoring system for mortality prediction within 30 days after a visit to an emergency department using 10 simulated sites divided from a tertiary hospital in Singapore. We employed a pre-existing score generator to construct 10 local scoring systems independently at each site and we also developed a scoring system using centralized data for comparison. We compared the acquired FedScore model's performance with that of other scoring models using the receiver operating characteristic (ROC) analysis. The FedScore model achieved an average area under the curve (AUC) value of 0.763 across all sites, with a standard deviation (SD) of 0.020. We also calculated the average AUC values and SDs for each local model, and the FedScore model showed promising accuracy and stability with a high average AUC value which was closest to the one of the pooled model and SD which was lower than that of most local models. This study demonstrates that FedScore is a privacy-preserving scoring system generator with potentially good generalizability.
title: Ανάπτυξη παιχνιδιού τριών διαστάσεων με χρήση μηχανής απόδοσης γραφικών
Creators: name: Ζερβουδάκης Νίκος
Publisher: name: Technical University of Crete
Year: 2010

description: Μη διαθέσιμο
Internationaler Kulturgüterschutz und die UNESCO - Konvention von 1970 Untersuchungen zur Umsetzung völkerrechtlicher Verpflichtungen in Österreich von Erika Carola Pieler
Creators: name: Kemle, Nicolai Boris
Publisher: name: Kunstrechtsspiegel
Year: 2017

description: -
description: Kunstrechtsspiegel, Nr. 4 (2009): Kunstrechtsspiegel
title: The Effect of Temperature Treatment on the Structure of Polyelectrolyte Multilayers
Creators: name: Zerball, Maximilian
name: Laschewsky, André
name: Köhler, Ralf
name: Klitzing, Regine von
Publisher: name: MDPI
Year: 2021

description: The study addresses the effect of thermal treatment on the internal structure of polyelectrolyte multilayers (PEMs). In order to get insight into the internal structure of PEMs, Neutron Reflectometry (NR) was used. PEMs with a deuterated inner block towards the substrate and a non-deuterated outer block were prepared and measured in 1% RH and in D2O before and after a thermal treatment. Complementarily, PEMs with the same number of layers but completely non-deuterated were investigated by ellipsometry. The analysis for the overall thickness (d), the average scattering length density (SLD) and the refractive index (n) indicate a degradation of the PEM. The loss in material is independent of the number of layers, i.e., only a constant part of the PEM is affected by degradation. The analysis of the internal structure revealed a more complex influence of thermal treatment on PEM structure. Only the outermost part of the PEM degenerates, while the inner part becomes denser during the thermal treatment. In addition, the swelling behavior of PEMs is influenced by the thermal treatment. The untreated PEM shows a well pronounced odd—even effect, i.e., PDADMAC-terminated PEMs take up more water than PSS-terminated PEMs. After the thermal treatment, the odd-even effect becomes much weaker.
A tensor approximation method based on ideal minimal residual formulations for the solution of high-dimensional problems
Creators: name: Billaud-Friess, Marie
name: Nouy, Anthony
name: Zahm, Olivier
Publisher: name: arXiv
Year: 2013
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 15A69, 35J50, 41A63, 65D15, 65N12

description: In this paper, we propose a method for the approximation of the solution of high-dimensional weakly coercive problems formulated in tensor spaces using low-rank approximation formats. The method can be seen as a perturbation of a minimal residual method with residual norm corresponding to the error in a specified solution norm. We introduce and analyze an iterative algorithm that is able to provide a controlled approximation of the optimal approximation of the solution in a given low-rank subset, without any a priori information on this solution. We also introduce a weak greedy algorithm which uses this perturbed minimal residual method for the computation of successive greedy corrections in small tensor subsets. We prove its convergence under some conditions on the parameters of the algorithm. The residual norm can be designed such that the resulting low-rank approximations are quasi-optimal with respect to particular norms of interest, thus yielding to goal-oriented order reduction strategies for the approximation of high-dimensional problems. The proposed numerical method is applied to the solution of a stochastic partial differential equation which is discretized using standard Galerkin methods in tensor product spaces.
Experimentelle und numerische Untersuchung des Ermüdungsverhaltens von verfestigten Kerben und Schweißverbindungen nach dem Hochfrequenzhämmern
Creators: name: Schubnell, Jan
Publisher: name: Karlsruher Institut für Technologie (KIT)
Year: 2021
Subjects: Mechanische Oberflächenbehandlung
Randschichtverfestigung
Eigenspannung
Schwingfestigkeit
Schweißverbindungen

description: Die Ermüdungsfestigkeitsteigerung von Schweißverbindungen durch das High Frequency Mechanical Impact (HFMI)-Verfahren ist hinreichend statistisch belegt. Die Wirkweise des Verfahrens beruht auf der Änderung der Kerbgeometrie am Nahtübergang, sowie auf der Verfestigung der Randschicht und die Entstehung oberflächennaher Druckeigenspannung. Der Einfluss dieser Effekte wird im Rahmen dieser Arbeit sowohl experimentell als auch numerisch an gekerbten und geschweißten Proben aus niederfesten Stahl (S355J2+N) und hochfesten Stahl (S960QL) untersucht. Durch gezielte Seperationsexperiemente an gekerbten Grundwerkstoffproben erfolgte experimentell eine teilweise Trennung der Effekte der Randschichtverfestigung sowie der Induzierung von Druckeigenspannung im Schwingfestigkeitsversuch. Durch Prozesssimulation des Schweißprozesses, der HFMI-Nachbehandlung sowie der Schwingbelastung mit der Finiten Elemente Methode (FEM) wurde der Eigenspannungszustand nach der Behandlung errechnet und mit Röntgen- und Neutronenbeugungsmessungen abgeglichen. Bei der numerischen Analyse des Ermüdungsverhaltens lag der Fokus auf der Phase der Rissbildung, die durch dehnungsbasierte Schädigungsparameter abgebildet wurde. Dabei wurde die zyklisch-stabile Eigenspannung als zusätzliche Mittelspannungskomponente berücksichtigt. Als Kriterium der Unterscheidung zwischen der Phase des Anrisses und des stabilen Rissfortschritts wurde der Spannungsabstandsansatz (engl. critical distance method) verwendet. Die Untersuchungen zeigten, dass die Schwingfestigkeitssteigerung bei den gekerbten Proben aus S355J2+N in erster Linie auf die Randschichtverfestigung zurückzuführen sind, während bei den gekerbten Proben aus S960QL fast aus-schließlich die induzierte Druckeigenspannung für den Schwingfestigkeitsgewinn verantwortlich ist.
Higgs Boson Studies at the Tevatron
Creators: name: CDF
name: Collaborations, D0
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We combine searches by the CDF and D0 Collaborations for the standard model Higgs boson with mass in the range 90--200 GeV$/c^2$ produced in the gluon-gluon fusion, $WH$, $ZH$, $t{\bar{t}}H$, and vector boson fusion processes, and decaying in the $H\rightarrow b{\bar{b}}$, $H\rightarrow W^+W^-$, $H\rightarrow ZZ$, $H\rightarrowτ^+τ^-$, and $H\rightarrow γγ$ modes. The data correspond to integrated luminosities of up to 10 fb$^{-1}$ and were collected at the Fermilab Tevatron in $p{\bar{p}}$ collisions at $\sqrt{s}=1.96$ TeV. The searches are also interpreted in the context of fermiophobic and fourth generation models. We observe a significant excess of events in the mass range between 115 and 140 GeV/$c^2$. The local significance corresponds to 3.0 standard deviations at $m_H=125$ GeV/$c^2$, consistent with the mass of the Higgs boson observed at the LHC, and we expect a local significance of 1.9 standard deviations. We separately combine searches for $H \to b\bar{b}$, $H \to W^+W^-$, $H\rightarrowτ^+τ^-$, and $H\rightarrowγγ$. The observed signal strengths in all channels are consistent with the presence of a standard model Higgs boson with a mass of 125 GeV/$c^2$.
description: Submitted to Phys. Rev. D
Particle association of Enterococcus sp. increases growth rates and simulated persistence in water columns of varying light attenuation and turbulent diffusivity
Creators: name: Myers, Elise McKenna
name: Juhl, Andrew R.
Publisher: name: Columbia University
Year: 2020
Subjects: Water--Management
Water quality--Measurement
Enterococcus
Sewage
Particles

description: Predicting water quality and the human health risks associated with sewage-derived microbes requires understanding the fate and transport of these contaminants. Sewage-derived pathogen risks are typically assessed and monitored by measuring concentrations of fecal indicating bacteria (FIB), like Enterococcus sp. Previous research demonstrated that a high fraction of FIB is particle-associated, which can alter FIB dynamics within secondary water bodies. In this study, we experimentally quantified the effect of par- ticle association on dark, temperature- and light-dependent growth and sinking rates of enterococci. Particle association significantly increased dark growth rates, light-dependent growth rates (i.e. decreased mortality), and sinking rates, relative to free-living enterococci. Simulations using a novel, 1- dimensional model parameterized by these rates indicate greater persistence (T90) for particle-associated enterococci in water bodies across a wide range of diffuse attenuation coefficients of light (Kd) and turbulent diffusivity (D) values. In addition, persistence of both fractions increased in simulated turbid and turbulent waters, compared to clear and/or quiescent conditions. Simulated persistence of both fractions also increased when enterococci discharges occurred later in a diel cycle (towards sunset, as opposed to sunrise), especially for the free-living population, because later discharges under our model conditions allowed both fractions to mix deeper before inactivation via sunlight. Model sensitivity testing revealed that T90 variability was greatest when dark growth rates were altered, suggesting that future empirical studies should focus on quantifying these rates for free-living and particle-associated sewage- derived microbes. Despite greater sensitivity of T90 to variability in dark growth rates, omitting light- dependent growth rates from simulations dramatically influenced T90 values. Our results demonstrate that particle association can increase enterococci persistence in receiving waters and highlight the importance of incorporating particle association in future water quality models.
Nanomechanical Inverse Electromagnetically Induced Transparency and Confinement of Light in Normal modes
Creators: name: Agarwal, G. S.
name: Huang, Sumei
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We demonstrate the existence of the phenomenon of the inverse electromagnetically induced transparency (IEIT) in an opto mechanical system consisting of a nanomechanical mirror placed in an optical cavity. We show that two weak counter-propagating identical classical probe fields can be completely absorbed by the system in the presence of a strong coupling field so that the output probe fields are zero. The light is completely confined inside the cavity and the energy of the incoming probe fields is shared between the cavity field and creation of a coherent phonon and resides primarily in one of the polariton modes. The energy can be extracted by a perturbation of the external fields or by suddenly changing the $Q$ of the cavity.
description: 10 pages, 5 figures
Multicomponent dark matter particles in a two-loop neutrino model
Creators: name: Kajiyama, Yuji
name: Okada, Hiroshi
name: Toma, Takashi
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We construct a loop induced seesaw model in a TeV scale theory with gauged U(1)_{B-L} symmetry. Light neutrino masses are generated at two-loop level and right-handed neutrinos also obtain their masses by one-loop effect. Multi-component Dark Matters (DMs) are included in our model due to the remnant discrete symmetry after the B-L symmetry breaking and the Z_2 parity which is originally imposed to the model. We investigate the multi-component DM properties, in which we have two fermionic DMs with different mass scales, O(10) GeV and O(100-1000) GeV. The former mass corresponds to the lightest right-handed neutrino mass induced by the loop effect, although the latter one to the SM gauge singlet fermion. We show each of the DM annihilation processes and compare to the the observation of relic abundance, together with the constraints of Lepton Flavor Violation (LFV) and active neutrino masses. Moreover we show that our model has some parameter region allowed by the direct detection result reported by XENON100, and it is possible to verify the model by the future XENON experiment.
description: 16 pages, 5 figures, 2 tables; version accepted for publication in Physical Review D
title: Uptake of pH-Sensitive Gold Nanoparticles in Strong Polyelectrolyte Brushes
Creators: name: Kesal, Dikran
name: Christau, Stephanie
name: Krause, Patrick
name: Möller, Tim
name: Klitzing, Regine von
Publisher: name: MDPI
Year: 2021

description: The impact of electrostatic attraction on the uptake of gold nanoparticles (AuNPs) into positively charged strong poly-[2-(Methacryloyloxy) ethyl] trimethylammonium chloride (PMETAC) polyelectrolyte brushes was investigated. In this work, PMETAC brushes were synthesized via surface-initiated atom transfer radical polymerization (Si-ATRP). PMETAC/AuNP composite materials were prepared by incubation of the polymer brush coated samples into 3-mercaptopropionic acid-capped AuNP (5 nm in diameter) suspension. The electrostatic interactions were tuned by changing the surface charge of the AuNPs through variations in pH value, while the charge of the PMETAC brush was not affected. Atomic-force microscopy (AFM), ellipsometry, UV/Vis spectroscopy, gravimetric analysis and transmission electron microscopy (TEM) were employed to study the loading and penetration into the polymer brush. The results show that the number density of attached AuNPs depends on the pH value and increases with increasing pH value. There is also strong evidence that the particle assembly is dependent on the pH value of the AuNP suspension. Incubation of PMETAC brushes in AuNP suspension at pH 4 led to the formation of a surface layer on top of the brush (2D assembly) due to sterical hindrance of the clustered AuNPs, while incubation in AuNP suspension at pH 8 led to deeper particle penetration into the brush (3D assembly). The straightforward control of particle uptake and assembly by tuning the charge density of the nanoparticle surface is a valuable tool for the development of materials for colorimetric sensor applications.
title: Σχεδίαση και υλοποίηση σε γλώσσα περιγραφής υλικού VHDL του αλγορίθμου BLASTp
Creators: name: Μαρκόπουλος Σπυρίδων
Publisher: name: Technical University of Crete
Year: 2010

description: Μη διαθέσιμο
Mechanische Datenverarbeitung. Ein Sichtlochkartensystem Mechanische Datenverarbeitung. Ein Sichtlochkartensystem …Mechanische Datenverarbeitung. Ein Sichtlochkartensystem zur Verarbeitung ur- und frühgeschichtlicher Daten
Creators: name: Dämmer, Heinz-Werner
Publisher: name: DGUF e.V.
Year: 2017

description: [nicht vorhanden / not available]
description: Archäologische Informationen, Bd. 2-3 (1973-1974): Archäologische Informationen
title: Orientation-Controlled Electrocatalytic Efficiency of an Adsorbed Oxygen-Tolerant Hydrogenase
Creators: name: Heidary, Nina
name: Utesch, Tillmann
name: Zerball, Maximilian
name: Horch, Marius
name: Millo, Diego
name: Fritsch, Johannes
name: Lenz, Oliver
name: Klitzing, Regine von
name: Hildebrandt, Peter
name: Fischer, Anna
name: Mroginski, Maria Andrea
name: Zebger, Ingo
Publisher: name: PLOS
Year: 2021

description: Protein immobilization on electrodes is a key concept in exploiting enzymatic processes for bioelectronic devices. For optimum performance, an in-depth understanding of the enzyme-surface interactions is required. Here, we introduce an integral approach of experimental and theoretical methods that provides detailed insights into the adsorption of an oxygen-tolerant [NiFe] hydrogenase on a biocompatible gold electrode. Using atomic force microscopy, ellipsometry, surface-enhanced IR spectroscopy, and protein film voltammetry, we explore enzyme coverage, integrity, and activity, thereby probing both structure and catalytic H₂ conversion of the enzyme. Electrocatalytic efficiencies can be correlated with the mode of protein adsorption on the electrode as estimated theoretically by molecular dynamics simulations. Our results reveal that pre-activation at low potentials results in increased current densities, which can be rationalized in terms of a potential-induced re-orientation of the immobilized enzyme.
More Work to Do: Analysis of Probation and Parole in the United States, 2017-2018
Creators: name: Bradner, Kendra
name: Schiraldi, Vincent N.
name: Mejia, Natasha
name: Lopoo, Evangeline
Publisher: name: Columbia University
Year: 2020
Subjects: Criminal justice, Administration of
Discrimination in criminal justice administration
Probation
Parole

description: This research brief offers an initial analysis of newly-released data from the Bureau of Justice Statistics (BJS), which report on the number of people under probation and parole supervision in 2017 and 2018. This brief seeks to put the data into the context of historical and international community supervision trends and to examine supervision rates through a racial equity lens. Key findings from the BJS report include that the number and percentage of people under community supervision has declined for the 10th year in a row (Kaeble and Alper 2020). This amounts to a 2% decrease between 2017 and 2018 and a 14% decrease from 2008 to 2018. Our analysis reveals that, while this does mark an observable decline in the number of people under community supervision, the United States continues to maintain high rates of community supervision compared to historic rates, as well as compared to European rates. Further, community supervision is still marked by significant racial disparities and “mass supervision” continues to be a major contributor to mass incarceration. Finally, from 2008 to 2018, the decline in the number of people on probation has failed to keep pace with the decline in arrests, resulting in an increase in the rate of probation, per arrest.
Majorana fermions in chains of magnetic atoms on a superconductor
Creators: name: Nadj-Perge, S.
name: Drozdov, I. K.
name: Bernevig, B. A.
name: Yazdani, Ali
Publisher: name: arXiv
Year: 2013
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We propose an easy-to-build easy-to-detect scheme for realizing Majorana fermions at the ends of a chain of magnetic atoms on the surface of a superconductor. Model calculations show that such chains can be easily tuned between trivial and topological ground state. In the latter, spatial resolved spectroscopy can be used to probe the Majorana fermion end states. Decoupled Majorana bound states can form even in short magnetic chains consisting of only tens of atoms. We propose scanning tunneling microscopy as the ideal technique to fabricate such systems and probe their topological properties.
description: 5 pages, 5 figures + supplementary
Cinarchea. Internationales Archäologie-Film-Festival Kiel 1994
Creators: name: Film Und Freunde Der Antike, Arbeitsgruppe
Publisher: name: DGUF e.V.
Year: 2017

description: [nicht vorhanden / not available
description: Archäologische Informationen, Bd. 16, Nr. 2 (1993): Archäologische Informationen
Anomalous velocity distributions in active Brownian suspensions
Creators: name: Fiege, Andrea
name: Vollmayr-Lee, Benjamin
name: Zippelius, Annette
Publisher: name: arXiv
Year: 2013
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: Large scale simulations and analytical theory have been combined to obtain the non-equilibrium velocity distribution, $f(v)$, of randomly accelerated particles in suspension. The simulations are based on an event-driven algorithm, generalised to include friction. They reveal strongly anomalous but largely universal distributions which are independent of volume fraction and collision processes, which suggests a one-particle model should capture all the essential features. We have formulated this one-particle model and solved it analytically in the limit of strong damping, where we find that $f(v)$ decays as $1/v$ for multiple decades, eventually crossing over to a Gaussian decay for the largest velocities. Many particle simulations and numerical solution of the one-particle model agree for all values of the damping.
description: 6 pages, 5 figures
The Structure and Quantum Capacity of a Partially Degradable Quantum Channel
Creators: name: Gyongyosi, Laszlo
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: Information Theory (cs.IT)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: The quantum capacity of degradable quantum channels has been proven to be additive. On the other hand, there is no general rule for the behavior of quantum capacity for non-degradable quantum channels. We introduce the set of partially degradable (PD) quantum channels to answer the question of additivity of quantum capacity for a well-separable subset of non-degradable channels. A quantum channel is partially degradable if the channel output can be used to simulate the degraded environment state. PD channels could exist both in the degradable, non-degradable and conjugate degradable family. We define the term partial simulation, which is a clear benefit that arises from the structure of the complementary channel of a PD channel. We prove that the quantum capacity of an arbitrary dimensional PD channel is additive. We also demonstrate that better quantum data rates can be achieved over a PD channel in comparison to standard (non-PD) channels. Our results indicate that the partial degradability property can be exploited and yet still hold many benefits for quantum communications.
description: 59 pages, 13 figures, Journal-ref: IEEE Access
Ausstellungsvorankündigung: TATORT CUT - Die Spur führt nach Xanten
Creators: name: Xanten, Regionalmuseum
Publisher: name: DGUF e.V.
Year: 2017

description: [nicht vorhanden / not available]
description: Archäologische Informationen, Bd. 17, Nr. 2 (1994): Archäologische Informationen
Calculus of Operators: Covariant Transform and Relative Convolutions
Creators: name: Kisil, Vladimir V.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Representation Theory (math.RT)
subject: Mathematical Physics (math-ph)
subject: Functional Analysis (math.FA)
subject: Operator Algebras (math.OA)
subject: Quantum Physics (quant-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 45P05, 43A80, 22E60, 47C10

description: This paper outlines a covariant theory of operators defined on groups and homogeneous spaces. A systematic use of groups and their representations allows to obtain results of algebraic and analytical nature. The consideration is systematically illustrated by a representative collection of examples. Keywords: Lie groups and algebras, convolution operator, relative convolution, representation theory, pseudo-differential operators, PDO, singular integral operator, SIO, the Heisenberg group, SL(2,R), induced representation, Fock-Segal-Bargmann (FSB) representation, Shrodinger representation, covariant transform, contravariant transform, wavelet transform, square integrable representations, reproducing kernel, Fourier-Wigner transform, deformation quantization, Bergman space, Berezin's symbol, Wick symbol, Schwartz kernel, Toeplitz operator, operators of local type, Simonenko's localisation, reproducing kernel thesis, Dynin group, twisted convolution, star product, Groenewold-Moyal, composition operator.
description: 27 pp; v2: numerous minor improvements; v3: minor adjustments
Die Neuerwerbung von Medaillen auf den Aachener Frieden von 1748 durch das Suermondt-Museum
Creators: name: Thieler, Hermann
Publisher: name: Aachener Kunstblätter
Year: 2017

description: -
description: Aachener Kunstblätter, Bd. 17-18 (1958-1959): Aachener Kunstblätter
Renormalization of the second-order QCD with arbitrary chromomagnetic factor and quark self-interactions
Creators: name: Vaquera-Araujo, Carlos A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this work, the renormalization of the second-order QCD is analyzed at one-loop level, including an arbitrary chromomagnetic factor and quark self-interactions, which are mass dimension four operators in this framework. The model is shown to be renormalizable for any value of the chromomagnetic factor $κ$ in the validity region of the perturbative expansion, and Dirac QCD is recovered in the $κ=2$ case with vanishing self-interaction couplings.
description: 22 pages, 13 figures. Non-abelian generalization of arXiv:1205.1557 [hep-ph]; v2: version accepted for publication in Journal of High-Energy Physics (JHEP)