cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Nonlocal pair correlations in Lieb-Liniger gases: A unified nonperturbative approach from weak degeneracy to high temperatures
Creators: name: Geiger, Benjamin
name: Hummel, Quirin
name: Urbina, Juan Diego
name: Richter, Klaus
Publisher: name: Universität Regensburg
Year: 2018
Subjects: subject: few-body systems, pair-correlation, semiclassical physics, Lieb-Liniger model, cluster expansion
subject: 530 Physik

description: We present analytical results for the nonlocal pair correlations in one-dimensional bosonic systems with repulsive contact interactions that are uniformly valid from the classical regime of high temperatures down to weak quantum degeneracy entering the regime of ultralow temperatures. By using the information contained in the short-time approximations of the full many-body propagator, we derive results that are nonperturbative in the interaction parameter while covering a wide range of temperatures and densities. For the case of three particles we give a simple formula for arbitrary couplings that is exact in the dilute limit while remaining valid up to the regime where the thermal de Broglie wavelength λT is of the order of the characteristic length L of the system. We then show how to use this result to find analytical expressions for the nonlocal correlations for arbitrary but fixed particle numbers N including finite-size corrections. Neglecting the latter in the thermodynamic limit provides an expansion in the quantum degeneracy parameter N λT/L. We compare our analytical results with numerical Bethe ansatz calculations, finding excellent agreement.
Security of quantum key distribution with state-dependent imperfections
Creators: name: Li, Hong-Wei
name: Yin, Zhen-Qiang
name: Han, Zheng-Fu
name: Bao, Wan-Su
name: Guo, Guang-Can
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In practical quantum key distribution (QKD) system, the state preparation and measurement are imperfect comparing with the ideal BB84 protocol, which are always state-dependent in practical realizations. If the state-dependent imperfections can not be regarded as an unitary transformation, it should not be considered as part of quantum channel noise introduced by the eavesdropper, the commonly used secret key rate formula GLLP can not be applied correspondingly. In this paper, the unconditional security of quantum key distribution with state-dependent imperfection has been analyzed by estimating the upper bound of the phase error rate about the quantum channel.
MPEC 2025-F244 : DAILY ORBIT UPDATE (2025 March 30)
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2025
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Cross sections for neutron-induced reactions from surrogate data: revisiting the Weisskopf-Ewing approximation for $(n,n^{\prime})$ and $(n,2n)$ reactions
Creators: name: Gorton, Oliver C.
name: Escher, Jutta E.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Nuclear Theory (nucl-th)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Earlier work has demonstrated that cross sections for neutron-induced fission and radiative neutron capture can be determined from a combination of surrogate reaction data and theory. For the fission case, it was shown that Weisskopf-Ewing approximation, which significantly simplifies the implementation of the surrogate method, can be employed. Capture cross sections cannot be obtained, and require a detailed description of the surrogate reaction process. In this paper we examine the validity of the Weisskopf-Ewing approximation for determining unknown $(n,n^{\prime})$ and $(n,2n)$ cross sections from surrogate data. We find that peak cross sections can be estimated using the Weisskopf-Ewing approximation, but the shape of the $(n,n^{\prime})$ and $(n,2n)$ cross sections, especially for low neutron energies, cannot be reliably determined without accounting for the angular-momentum differences between the neutron-induced and surrogate reaction. To obtain reliable $(n,n^{\prime})$ and $(n,2n)$ cross sections from surrogate reaction data, a detailed description of the surrogate reaction mechanisms is required. To do so for the compound-nucleus energies and decay channels relevant to these reactions, it becomes necessary to extend current modeling capabilities.
description: 16 pages, 10 figures
High-Yielding Varieties of Wheat in Developing Countries
Creators: name: Tsu, Sheldon K.
name: Tsu, Sheldon K.
Publisher: name: Unknown
Year: 1971
Subjects: subject: Agricultural and Food Policy
subject: Crop Production/Industries
subject: Productivity Analysis
subject: Research and Development/Tech Change/Emerging Technologies
subject: High-yielding wheat varieties
subject: semidwarf wheat
subject: wheat production
subject: Green Revolution
subject: developing countries

description: The production of high-yielding varieties of wheats in developing countries in recent years has been so successful as to be termed a Green Revolution. These wheats (semidwarfs), originating in Mexico, are short stemmed, photo insensitive, and highly responsive to inputs. Total semidwarf wheat area in India, Pakistan, Mexico, Turkey, Afghanistan, Tunisia, Iran and Morocco, expanded rapidly from 0.6 million hectares in 1966 to 10.6 million hectares in 1970. Production during the same period increased from 1.6 million tons to 22.7 million tons. In 1970, semidwarf wheat in these countries accounted for 25 percent of the total wheat area and 49 percent of the total wheat output. This agricultural advance is attributed to programs developed by individual governments with the assistance of international institutions and private agencies.
CLNet: Complex Input Lightweight Neural Network designed for Massive MIMO CSI Feedback
Creators: name: Ji, Sijie
name: Li, Mo
Publisher: name: arXiv
Year: 2021
Subjects: subject: Information Theory (cs.IT)
subject: Artificial Intelligence (cs.AI)
subject: Signal Processing (eess.SP)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Unleashing the full potential of massive MIMO in FDD mode by reducing the overhead of CSI feedback has recently garnered attention. Numerous deep learning for massive MIMO CSI feedback approaches have demonstrated their efficiency and potential. However, most existing methods improve accuracy at the cost of computational complexity and the accuracy decreases significantly as the CSI compression rate increases. This paper presents a novel neural network CLNet tailored for CSI feedback problem based on the intrinsic properties of CSI. CLNet proposes a forge complex-valued input layer to process signals and utilizes attention mechanism to enhance the performance of the network. The experiment result shows that CLNet outperforms the state-of-the-art method by average accuracy improvement of 5.41\% in both outdoor and indoor scenarios with average 24.1\% less computational overhead. Codes for deep learning-based CSI feedback CLNet are available at GitHub.
A No-Go Theorem for the Consistent Quantization of Spin 3/2 Fields on General Curved Spacetimes
Creators: name: Hack, Thomas-Paul
name: Makedonski, Mathias
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: It is well-known that coupling a spin $\frac32$-field to a gravitational or electromagnetic background leads to potential problems both in the classical and in the quantum theory. Various solutions to these problems have been proposed so far, which are all restricted to a limited class of backgrounds. On the other hand, negative results for general gravitational backgrounds have been reported only for a limited set of couplings to the background to date. Hence, to our knowledge, a comprehensive analysis of all possible couplings to the gravitational field and general gravitational backgrounds including off-shell ones has not been performed so far. In this work we analyse whether it is possible to couple a spin $\frac32$-field to a gravitational field in such a way that the resulting quantum theory is consistent on arbitrary gravitational backgrounds. We find that this is impossible as all couplings require the background to be an Einstein spacetime for consistency. This enforces the widespread belief that supergravity theories are the only meaningful models which contain spin $\frac32$ fields as in these models such restrictions of the gravitational background appear naturally as on-shell conditions.
description: 8 pages, substantially abridged, results unchanged
Mechanisms of randomness cognition
Creators: name: Yu, Ru Qi
Publisher: name: University of British Columbia
Year: 2017

description: The environment is inherently noisy, with regularities and randomness. Therefore, the challenge for the cognitive system is to detect signals from noise. This extraction of regularities forms the basis of many learning processes, such as conditioning and language acquisition. However, people often have erroneous beliefs about randomness. One pervasive bias in people’s conception of randomness is that they expect random sequences to exhibit greater alternations than typically produced by random devices (i.e., the over-alternation bias). To explain the causes of this bias, in the thesis, I examined the cognitive and neural mechanisms of randomness perception. In six experiments, I found that the over-alternation bias was present regardless of the feature dimensions, sensory modalities, and probing methods (Experiment 1); alternations in a binary sequence were harder to encode and are under-represented compared with repetitions (Experiments 2-5); and hippocampal neurogenesis was a critical neural mechanism for the detection of alternating patterns but not for repeating patterns (Experiment 6). These findings provide new insights on the mechanisms of randomness cognition; specifically, we revealed different mechanisms involved in representing alternating patterns versus repeating patterns.
Quenched limits for the fluctuations of transient random walks in random environment on Z
Creators: name: Enriquez, Nathanaël
name: Sabot, Christophe
name: Tournier, Laurent
name: Zindy, Olivier
Publisher: name: arXiv
Year: 2010
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60K37, 60F05, 82B41 (Primary) 60E07, 60E10 (Secondary)

description: We consider transient nearest-neighbor random walks in random environment on Z. For a set of environments whose probability is converging to 1 as time goes to infinity, we describe the fluctuations of the hitting time of a level n, around its mean, in terms of an explicit function of the environment. Moreover, their limiting law is described using a Poisson point process whose intensity is computed. This result can be considered as the quenched analog of the classical result of Kesten, Kozlov and Spitzer [Compositio Math. 30 (1975) 145-168].
description: Published in at http://dx.doi.org/10.1214/12-AAP867 the Annals of Applied Probability (http://www.imstat.org/aap/) by the Institute of Mathematical Statistics (http://www.imstat.org). arXiv admin note: substantial text overlap with arXiv:1004.1333
A semiclassical analysis of the Efimov energy spectrum in the unitary limit
Creators: name: Bhaduri, Rajat K.
name: Brack, Matthias
name: Murthy, M. V. N.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We demonstrate that the (s-wave) geometric spectrum of the Efimov energy levels in the unitary limit is generated by the radial motion of a primitive periodic orbit (and its harmonics) of the corresponding classical system. The action of the primitive orbit depends logarithmically on the energy. It is shown to be consistent with an inverse-squared radial potential with a lower cut-off radius. The lowest-order WKB quantization, including the Langer correction, is shown to reproduce the geometric scaling of the energy spectrum. The (WKB) mean-squared radii of the Efimov states scale geometrically like the inverse of their energies. The WKB wavefunctions, regularized near the classical turning point by Langer's generalized connection formula, are practically indistinguishable from the exact wave functions even for the lowest ($n=0$) state, apart from a tiny shift of its zeros that remains constant for large $n$.
description: LaTeX (revtex 4), 18pp., 4 Figs., already published in Phys. Rev. A but here a note with a new referece is added on p. 14
Biology and genetic diversity of Candida krusei isolates from fermented vegetables and clinical samples
Creators: name: Zheng, Tianhong
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 310704
subject: Microbial genetics
classificationCode: 310410
subject: Phylogeny and comparative analysis

description: Candida krusei, also known as Pichia kudriavzevii, is an emerging non-albicans Candida (NAC) species causing both superficial and deep-seated infections in humans. This fungal pathogen is inherently resistant to the first-line antifungal drug, fluconazole, and is widely distributed in natural environments such as soil, foods, vegetables, and fruits.
SDEs Driven by SDE Solutions
Creators: name: Schnurr, Alexander
Publisher: name: arXiv
Year: 2011
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60J75, 47G30, 60H20, 60G17

description: We consider stochastic differential equations (SDEs) driven by Feller processes which are themselves solutions of multivariate Levy driven SDEs. The solutions of these 'iterated SDEs' are shown to be non-Markovian. However, the process consisting of the driving process and the solution is Markov and even Feller in the case of bounded coefficients. The generator as well as the semimartingale characteristics of this process are calculated explicitly and fine properties of the solution are derived via the stochastic symbol. A short simulation study and an outlook in the direction of stochastic modeling round out the paper.
description: 16 pages, 9 figures
Maximizing Social Welfare and Agreement via Information Design in Linear-Quadratic-Gaussian Games
Creators: name: Sezer, Furkan
name: Khazaei, Hossein
name: Eksin, Ceyhun
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optimization and Control (math.OC)
subject: Multiagent Systems (cs.MA)
subject: Systems and Control (eess.SY)
subject: General Economics (econ.GN)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Economics and business

description: We consider linear-quadratic Gaussian (LQG) games in which players have quadratic payoffs that depend on the players' actions and an unknown payoff-relevant state, and signals on the state that follow a Gaussian distribution conditional on the state realization. An information designer decides the fidelity of information revealed to the players in order to maximize the social welfare of the players or reduce the disagreement among players' actions. Leveraging the semi-definiteness of the information design problem, we derive analytical solutions for these objectives under specific LQG games. We show that full information disclosure maximizes social welfare when there is a common payoff-relevant state, when there is strategic substitutability in the actions of players, or when the signals are public. Numerical results show that as strategic substitution increases, the value of the information disclosure increases. When the objective is to induce conformity among players' actions, hiding information is optimal. Lastly, we consider the information design objective that is a weighted combination of social welfare and cohesiveness of players' actions. We obtain an interval for the weights where full information disclosure is optimal under public signals for games with strategic substitutability. Numerical solutions show that the actual interval where full information disclosure is optimal gets close to the analytical interval obtained as substitution increases.
Visual diagnosis of the Varroa destructor parasitic mite in honeybees using object detector techniques
Creators: name: Bilik, Simon
name: Kratochvila, Lukas
name: Ligocki, Adam
name: Bostik, Ondrej
name: Zemcik, Tomas
name: Hybl, Matous
name: Horak, Karel
name: Zalud, Ludek
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: The Varroa destructor mite is one of the most dangerous Honey Bee (Apis mellifera) parasites worldwide and the bee colonies have to be regularly monitored in order to control its spread. Here we present an object detector based method for health state monitoring of bee colonies. This method has the potential for online measurement and processing. In our experiment, we compare the YOLO and SSD object detectors along with the Deep SVDD anomaly detector. Based on the custom dataset with 600 ground-truth images of healthy and infected bees in various scenes, the detectors reached a high F1 score up to 0.874 in the infected bee detection and up to 0.727 in the detection of the Varroa Destructor mite itself. The results demonstrate the potential of this approach, which will be later used in the real-time computer vision based honey bee inspection system. To the best of our knowledge, this study is the first one using object detectors for this purpose. We expect that performance of those object detectors will enable us to inspect the health status of the honey bee colonies.
How to Catch L_2-Heavy-Hitters on Sliding Windows
Creators: name: Braverman, Vladimir
name: Gelles, Ran
name: Ostrovsky, Rafail
Publisher: name: arXiv
Year: 2010
Subjects: subject: Data Structures and Algorithms (cs.DS)
subject: FOS: Computer and information sciences

description: Finding heavy-elements (heavy-hitters) in streaming data is one of the central, and well-understood tasks. Despite the importance of this problem, when considering the sliding windows model of streaming (where elements eventually expire) the problem of finding L_2-heavy elements has remained completely open despite multiple papers and considerable success in finding L_1-heavy elements. In this paper, we develop the first poly-logarithmic-memory algorithm for finding L_2-heavy elements in sliding window model. Since L_2 heavy elements play a central role for many fundamental streaming problems (such as frequency moments), we believe our method would be extremely useful for many sliding-windows algorithms and applications. For example, our technique allows us not only to find L_2-heavy elements, but also heavy elements with respect to any L_p for 02 this task is impossible. Our method may have other applications as well. We demonstrate a broader applicability of our novel yet simple method on two additional examples: we show how to obtain a sliding window approximation of other properties such as the similarity of two streams, or the fraction of elements that appear exactly a specified number of times within the window (the rarity problem). In these two illustrative examples of our method, we replace the current expected memory bounds with worst case bounds.
description: v3: updated acknowledgment v2: minor changes; extended abstract to appear in COCOON 2013
Polychrony as Chinampas
Creators: name: Dolores-Cuenca, Eric
name: Arciniega-Nevarez, Jose Antonio
name: Nguyen, Anh
name: Zou, Yitong
name: Van Popering, Luke
name: Crock, Nathan
name: Erlebacher, Gordon
name: Mendoza-Cortes, Jose L.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Combinatorics (math.CO)
subject: Formal Languages and Automata Theory (cs.FL)
subject: Category Theory (math.CT)
subject: Neurons and Cognition (q-bio.NC)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: FOS: Biological sciences
subject: F.1.1; I.1.2
subject: 05A10 (Primary), 94C15, 68Q80, 05C30, 37B15, 90C30 (Secondary)

description: In this paper, we study the flow of signals through linear paths with the nonlinear condition that a node emits a signal when it receives external stimuli or when two incoming signals from other nodes arrive coincidentally with a combined amplitude above a fixed threshold. Sets of such nodes form a polychrony group and can sometimes lead to cascades. In the context of this work, cascades are polychrony groups in which the number of nodes activated as a consequence of other nodes is greater than the number of externally activated nodes. The difference between these two numbers is the so-called profit. Given the initial conditions, we predict the conditions for a vertex to activate at a prescribed time and provide an algorithm to efficiently reconstruct a cascade. We develop a dictionary between polychrony groups and graph theory. We call the graph corresponding to a cascade a chinampa. This link leads to a topological classification of chinampas. We enumerate the chinampas of profits zero and one and the description of a family of chinampas isomorphic to a family of partially ordered sets, which implies that the enumeration problem of this family is equivalent to computing the Stanley-order polynomials of those partially ordered sets.
description: 32 pages. We changed the exposition, removed unfinished work, and added bibliography. To appear on "Algorithms"
Algorithm 916: computing the Faddeyeva and Voigt functions
Creators: name: Zaghloul, Mofreh R.
name: Ali, Ahmed N.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Numerical Analysis (math.NA)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: We present a MATLAB function for the numerical evaluation of the Faddeyeva function w(z). The function is based on a newly developed accurate algorithm. In addition to its higher accuracy, the software provides a flexible accuracy vs efficiency trade-off through a controlling parameter that may be used to reduce accuracy and computational time and vice versa. Verification of the flexibility, reliability and superior accuracy of the algorithm is provided through comparison with standard algorithms available in other libraries and software packages.
description: 27 pages, 5 tables, 9 figurs
Two Scenarios for Quantum Multifractality Breakdown, with a research highlight in French, siehe "Andere URL zum Volltext"
Creators: name: Dubertrand, Rémy
name: García-Mata, I.
name: Georgeot, B.
name: Giraud, O.
name: Lemarié, G.
name: Martin, J.
Publisher: name: Universität Regensburg
Year: 2014
Subjects: subject: 530 Physik
subject: 05.45.Mt, 05.40.-a, 05.45.Df, 71.30.+h

description: We expose two scenarios for the breakdown of quantum multifractality under the effect of perturbations. In the first scenario, multifractality survives below a certain scale of the quantum fluctuations. In the other one, the fluctuations of the wave functions are changed at every scale and each multifractal dimension smoothly goes to the ergodic value. We use as generic examples a one-dimensional dynamical system and the three-dimensional Anderson model at the metal-insulator transition. Based on our results, we conjecture that the sensitivity of quantum multifractality to perturbation is universal in the sense that it follows one of these two scenarios depending on the perturbation. We also discuss the experimental implications.
Exploring oral health and dental care experiences, perceptions and behaviours of adults whose parents were incarcerated during their childhood
Creators: name: Amir, Nida
Publisher: name: University of British Columbia
Year: 2017

description: Objectives: Parental incarceration is an Adverse Childhood Experience (ACE) that can have a negative effect on health related Quality of Life (QOL) outcomes in adulthood. It is unclear how this ACE influences oral health in childhood and in adulthood. This study explores: 1. The oral-health and dental care experiences of men and women whose parents were incarcerated during their childhood; 2. How this childhood experience influences current behaviours and perceptions of oral health and dental care in adulthood. Methods: Semi-structured, in-depth interviews were conducted with adults who had one or both parents incarcerated during their childhood. The transcripts were analyzed using Interpretive Phenomenology to identify and describe dominant themes. Results: The eight participants in this study (four males, four females) were found to have experienced more than one ACE. Four themes emerged: 1) Instability; 2) Poverty, stigma and shame; 3) Past dental experiences, and 4) Value of empathetic dental professionals. Conclusion: This study aimed to provide awareness into the concepts that exist about oral health and dental care in adults that have experienced parental incarceration. We found that participants were able to receive dental care on a regular basis during childhood, (urgent and general dental care) however, preventive dental care at home was lacking. The manner in which dental care was delivered in childhood had a strong influence on dental behaviours in adulthood. Financial barriers such as inability to afford dental-care and non-financial barriers such as dental fear, stigma and shame exist for the participants in adulthood in accessing dental care. Perceived poor dental aesthetics made participants feel low self-esteem and social isolation, and restricted their career options. Oral health of their children is given more priority than their own and dental professionals who are empathetic are preferred. The findings of this study highlight that, similar to other vulnerable groups, it is important for dental practitioners to understand and practise Trauma Informed Care universally when working with children, in particular those who may have suffered from ACE, in order to provide experiences that promote their future oral-health.
Sustainable alternative protocols for the multicomponent synthesis of spiro-4H-pyrans catalyzed by 4-dimethylaminopyridine
Creators: name: Mommahed Heravi, Majid
name: Zakeri, Masoumeh
name: MahmoudNasef, Mohamed
name: Abouzari-Lotf, Ebrahim
name: Moharami, Arezoo
Publisher: name: figshare
Year: 2022
Subjects: subject: 30302 Nanochemistry and Supramolecular Chemistry
subject: FOS: Chemical sciences
subject: 30701 Quantum Chemistry
subject: 39904 Organometallic Chemistry
subject: Organic Chemistry
subject: 30502 Natural Products Chemistry
subject: 30599 Organic Chemistry not elsewhere classified
subject: 30205 Non-metal Chemistry
subject: Nuclear Chemistry
subject: 30504 Organic Green Chemistry
subject: 30303 Optical Properties of Materials

description: Green approaches to the synthesis of spiro-4. H-pyrans are reported based on the one-pot and three-component condensation via a domino Knoevenagel /Michael /cyclization sequence. These approaches involve evaluation of the activity of several organocatalysts in water as a reaction media and also under solvent-free in both microwave irradiation and ball milling conditions. Extensive experiments were carried out to optimize the reaction parameters including type and amount of catalyst, reaction temperature and time. Microwave irradiation in presence of 4-dimethylaminopyridine (DMAP) was observed as the best procedure with good yields, short reaction time, environmental friendliness, and convenient operation.
A FLOSS Visual EM Simulator for 3D Antennas
Creators: name: Koutsos, Christos A.
name: Yannopoulou, Nikolitsa I.
name: Zimourtopoulos, Petros E.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: This paper introduces the FLOSS Free Libre Open Source Software [VEMSA3D], a contraction of "Visual Electromagnetic Simulator for 3D Antennas", which are geometrically modeled, either exactly or approximately, as thin wire polygonal structures; presents its GUI Graphical User Interface capabilities, in interactive mode and/or in handling suitable formed antenna data files; demonstrates the effectiveness of its use in a number of practical antenna applications, with direct comparison to experimental measurements and other freeware results; and provides the inexperienced user with a specific list of instructions to successfully build the given source code by using only freely available IDE Integrated Development Environment tools-including a cross-platform one. The unrestricted access to source code, beyond the ability for immediate software improvement, offers to independent users and volunteer groups an expandable, in any way, visual antenna simulator, for a genuine research and development work in the field of antennas, adaptable to their needs.
description: No changes in the paper since [v2] Thu, 24 Jun 2010 06:22:35 GMT (1404kb): [v5] = [v4] = [v3] = [v2]
Simulation of QCD with N f = 2 + 1 flavors of non-perturbatively improved Wilson fermions
Creators: name: Bruno, Mattia
name: Djukanovic, Dalibor
name: Engel, Georg P.
name: Francis, Anthony
name: Herdoiza, Gregorio
name: Horch, Hanno
name: Korcyl, Piotr
name: Korzec, Tomasz
name: Papinutto, Mauro
name: Schaefer, Stefan
name: Scholz, Enno E.
name: Simeth, Jakob
name: Simma, Hubert
name: Söldner, Wolfgang
Publisher: name: Universität Regensburg
Year: 2015
Subjects: subject: Lattice QCD, Lattice Gauge Field Theories
subject: 530 Physik

description: We describe a new set of gauge configurations generated within the CLS effort. These ensembles have N f = 2 + 1 flavors of non-perturbatively improved Wilson fermions in the sea with the Lüscher-Weisz action used for the gluons. Open boundary conditions in time are used to address the problem of topological freezing at small lattice spacings and twisted-mass reweighting for improved stability of the simulations. We give the bare parameters at which the ensembles have been generated and how these parameters have been chosen. Details of the algorithmic setup and its performance are presented as well as measurements of the pion and kaon masses alongside the scale parameter t 0.
description: SCAOP3
D7.2 Oxyfuel burner prototype performance tests
Creators: name: Carrasco, Francisco M.
name: Grathwohl, Simon
name: Maier, Jörg
name: Wilms, Eike
name: Ruppert, Johannes
Publisher: name: Zenodo
Year: 2018
Subjects: Burner design
Oxyfuel
Pilot testing

description: The report here presented serves a summary of the activities and findings related to the testing of the prototype oxyfuel burner in the 500 kW test facility. This document presents information on the design of the prototype burner, including the criteria and constraints considered for downscaling. Likewise, a description of the test facility and demonstration cases is made including carried out measurements. Furthermore, an interpretation of the measurements is done to understand the differences between air and oxyfuel firing experiments. This information has been used for validation of further analysis tools, including CFD and process simulations. Finally, assessments of the results as well as relevant conclusions are drawn from these investigations.
Enhancing Code LLM Training with Programmer Attention
Creators: name: Zhang, Yifan
name: Huang, Chen
name: Karas, Zachary
name: Nguyen, Dung Thuy
name: Leach, Kevin
name: Huang, Yu
Publisher: name: arXiv
Year: 2025
Subjects: subject: Software Engineering (cs.SE)
subject: Human-Computer Interaction (cs.HC)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Human attention provides valuable yet underexploited signals for code LLM training, offering a perspective beyond purely machine-driven attention. Despite the complexity and cost of collecting eye-tracking data, there has also been limited progress in systematically using these signals for code LLM training. To address both issues, we propose a cohesive pipeline spanning augmentation and reward-based fine-tuning. Specifically, we introduce (1) an eye-tracking path augmentation method to expand programmer attention datasets, (2) a pattern abstraction step that refines raw fixations into learnable attention motifs, and (3) a reward-guided strategy for integrating these insights directly into a CodeT5 supervised fine-tuning process. Our experiments yield +7.16 in CodeBLEU on the CodeXGlue benchmark for code summarization, underscoring how uniting human and machine attention can boost code intelligence. We hope this work encourages broader exploration of human-centric methods in next-generation AI4SE.
Polyvector fields for Fano 3-folds
Creators: name: Belmans, Pieter
name: Fatighenti, Enrico
name: Tanturri, Fabio
Publisher: name: arXiv
Year: 2021
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics

description: We compute the Hochschild-Kostant-Rosenberg decomposition of the Hochschild cohomology of Fano 3-folds. This is the first step in understanding the non-trivial Gerstenhaber algebra structure, and yields some initial insights in the classification of Poisson structures on Fano 3-folds of higher Picard rank.
description: Several typos removed, exposition improved
Erratum to: Elements of a theory for multiparton interactions in QCD
Creators: name: Diehl, Markus
name: Ostermeier, Daniel
name: Schäfer, Andreas
Publisher: name: Universität Regensburg
Year: 2016
Subjects: subject: 530 Physik

description: Erratum to: JHEP03(2012)089
description: SCOAP3
Optical beam diffraction tensor in birefringent crystals
Creators: name: Yushkov, Konstantin
name: Naumenko, Natalya
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We demonstrate that anisotropy of Fresnel diffraction in a birefringent medium can be quantitatively characterized by a planar tensor. Eigenvectors of the tensor correspond to directions of minimum and maximum beam divergence. Zero eigenvalues exist for the fast eigenmode near the optic axis of biaxial crystals and correspond to autocollimated beam propagation. Applications of the beam diffraction tensor are demonstrated for analysis of noncritical phase matching in acousto-optics and three-wave mixing.
description: 8 pages, 9 figures
Adiabatically steered open quantum systems: Master equation and optimal phase
Creators: name: Salmilehto, J.
name: Solinas, P.
name: Ankerhold, J.
name: Möttönen, M.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We introduce an alternative way to derive the generalized form of the master equation recently presented by J. P. Pekola et al. [Phys. Rev. Lett. 105, 030401 (2010)] for an adiabatically steered two-level quantum system interacting with a Markovian environment. The original derivation employed the effective Hamiltonian in the adiabatic basis with the standard interaction picture approach but without the usual secular approximation. Our approach is based on utilizing a master equation for a non-steered system in the first super-adiabatic basis. It is potentially efficient in obtaining higher-order equations. Furthermore, we show how to select the phases of the adiabatic eigenstates to minimize the local adiabatic parameter and how this selection leads to states which are invariant under a local gauge change. We also discuss the effects of the adiabatic noncyclic geometric phase on the master equation.
description: 8 pages, no figures, final version
Finite coupling corrections to holographic predictions for hot QCD
Creators: name: Waeber, Sebastian
name: Schäfer, Andreas
name: Vuorinen, Aleksi
name: Yaffe, Laurence G.
Publisher: name: Universität Regensburg
Year: 2015
Subjects: subject: Gauge-gravity correspondence, Holography and quark-gluon plasmas
subject: 530 Physik

description: Finite ’t Hooft coupling corrections to multiple physical observables in strongly coupled N=4 supersymmetric Yang-Mills plasma are examined, in an attempt to assess the stability of the expansion in inverse powers of the ’t Hooft coupling λ. Observables considered include thermodynamic quantities, transport coefficients, and quasinormal mode frequencies. Although large λ expansions for quasinormal mode frequencies are notably less well behaved than the expansions of other quantities, we find that a partial resummation of higher order corrections can significantly reduce the sensitivity of the results to the value of λ.
description: SCOAP3
Hidden spectral symmetries and mode stability of subextremal Kerr(-dS) black holes
Creators: name: Casals, Marc
name: da Costa, Rita Teixeira
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: Analysis of PDEs (math.AP)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We uncover hidden spectral symmetries of the Teukolsky equation in Kerr(-de Sitter) black holes, recently conjectured by Aminov, Grassi and Hatsuda (arXiv: 2006.06111 and arXiv: 2007.07906, 2020) in the zero cosmological constant case. Using these symmetries, we provide a new, simpler proof of mode stability for subextremal Kerr black holes. We also present a partial mode stability result for Kerr-de Sitter black holes.
description: 24 pages, 1 figure; v2: clarification of the proof of Proposition 3.8 and other typos
Local non-CSS quantum error correcting code on a three-dimensional lattice
Creators: name: Kim, Isaac H.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Physics (quant-ph)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We present a family of non-CSS quantum error-correcting code consisting of geometrically local stabilizer generators on a 3D lattice. We study the Hamiltonian constructed from ferromagnetic interaction of overcomplete set of local stabilizer generators. The degenerate ground state of the system is characterized by a quantum error-correcting code whose number of encoded qubits are equal to the second Betti number of the manifold. These models (i) have solely local interactions; (ii) admit a strong-weak duality relation with an Ising model on a dual lattice; (iii) have topological order in the ground state, some of which survive at finite temperature; and (iv) behave as classical memory at finite temperature.
description: 6 pages, 7 figures. Minor revision
Towards a fitting procedure to deeply virtual meson production – the next-to-leading order case
Creators: name: Müller, D.
name: Lautenschlager, T.
name: Passek-Kumerički, K.
name: Schäfer, A.
Publisher: name: Universität Regensburg
Year: 2014
Subjects: subject: 530 Physik

description: Based on the collinear factorization approach, we present a comprehensive perturbative next-to-leading (NLO) analysis of deeply virtual meson production (DVMP). Our representation in conformal Mellin space can serve as basis for a global fitting procedure to access generalized parton distributions from experimental measurements of DVMP and deeply virtual Compton scattering (DVCS). We introduce a rather general formalism for the evaluation of conformal moments that can be developed further beyond the considered order. We also confirm previous diagrammatical findings in the pure singlet quark channel. Finally, we use the analytic properties of the hard scattering amplitudes to estimate qualitatively the size of radiative corrections and illustrate these considerations with some numerical examples. The results suggest that global NLO GPD fits, including both DVMP and DVCS data, could be more stable than often feared.
description: SCOAP3
Generation of matter from stimulated vacuum fluctuations
Creators: name: Desrochers, Michael J.
Publisher: name: University of British Columbia
Year: 2017

description: Through the connection between quantum mechanical vacuum effects and a time dependent deformation of space-time, an avenue to excite the quantum fields that lay on top of these structures is possible. It is through this approach, energy can be given to a spatially compact region of space-time, through the deformation of its boundary, to generate matter that is screened by said boundary. While this particle genesis is described generally, the focus will be within 1+1-dimensions for the photon field and a natural photon-screening boundary, a conductor. This work explores the irreducible components of this procedure, namely the dynamics of an isolated piece of a conductor drifting in the vacuum, the stirring of the vacuum through a deformation of a conducting boundary around a spatially compact space-time, and through a driven time-dependent conductivity of the same boundary. Once the irreducible components are developed and understood, a brief discussion on more exotic higher dimensional systems is introduced.
An algebra over the operad of posets and structural binomial identities
Creators: name: Arciniega-Nevarez, Jose Antonio
name: Berghoff, Marko
name: Dolores-Cuenca, Eric
Publisher: name: arXiv
Year: 2021
Subjects: subject: Combinatorics (math.CO)
subject: Algebraic Topology (math.AT)
subject: FOS: Mathematics
subject: 06A07(primary)60C05, 18M80, 05A19, 05A10, 05E14, 05E45, 05A15, 05A17, 05A18(Secondary)

description: We study generating functions of strict and non-strict order polynomials of series-parallel posets, called order series. These order series are closely related to Ehrhart series and h*-polynomials of the associated order polytopes. We explain how they can be understood as algebras over a certain operad of posets. Our main results are based on the fact that the order series of chains form a basis in the space of order series. This allows to reduce the search space of an algorithm that finds for a given power series f, if possible, a poset P such that f is the generating function of the order polynomial of P. In terms of Ehrhart theory of order polytopes, the coordinates with respect to this basis describe the number of (internal) simplices in the canonical triangulation of the order polytope of P. Furthermore, we derive a new proof of the reciprocity theorem of Stanley. As an application, we find new identities for binomial coefficients and for finite partitions that allow for empty sets, and we describe properties of the negative hypergeometric distribution.
description: To appear on Bolet\'in de la Sociedad Matem\'atica Mexicana
Universal hydrodynamic flow in holographic planar shock collisions
Creators: name: Chesler, Paul M.
name: Kilbertus, Niki
name: van der Schee, Wilke
Publisher: name: Universität Regensburg
Year: 2015
Subjects: subject: Quark-Gluon Plasma, Gauge-gravity correspondence, AdS-CFT Correspondence, Holography and quark-gluon plasmas
subject: 530 Physik

description: We study the collision of planar shock waves in AdS5 as a function of shock profile. In the dual field theory the shock waves describe planar sheets of energy whose collision results in the formation of a plasma which behaves hydrodynamically at late times. We find that the post-collision stress tensor near the light cone exhibits transient non-universal behavior which depends on both the shock width and the precise functional form of the shock profile. However, over a large range of shock widths, including those which yield qualitative different behavior near the future light cone, and for different shock profiles, we find universal behavior in the subsequent hydrodynamic evolution. Additionally, we compute the rapidity distribution of produced particles and find it to be well described by a Gaussian.
description: SCOAP3
Split noncommutativity and compactified brane solutions in matrix models
Creators: name: Steinacker, Harold
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Solutions of the undeformed IKKT matrix model with structure R^{3,1} x K are presented, where the noncommutativity relates the compact with the non-compact space. The extra dimensions are stabilized by angular momentum, and the scales of K are generic moduli of the solutions. Explicit solutions are given for K= T^2, K= T^4, K = S^2 x T^2 and K = S^2 x S^2. Infinite towers of Kaluza-Klein modes may arise in some directions, along with an effective UV cutoff on the non-compact space. Deformations of these solutions carry NC gauge theory coupled to (emergent) gravity. Analogous solutions of the BFSS model are also given.
description: 24 pages. V2, V3: typos fixed. V4: minor corrections
Scattering theory of walking droplets in the presence of obstacles
Creators: name: Dubertrand, Rémy
name: Hubert, Maxime
name: Schlagheck, Peter
name: Vandewalle, Nicolas
name: Bastin, Thierry
name: Martin, John
Publisher: name: Universität Regensburg
Year: 2016
Subjects: subject: drops, nonlinear dynamics, walking droplets, quantum mechanics
subject: 530 Physik

description: We aim to describe a droplet bouncing on a vibrating bath using a simple and highly versatile model inspired from quantum mechanics. Close to the Faraday instability, a long-lived surface wave is created at each bounce, which serves as a pilot wave for the droplet. This leads to so called walking droplets or walkers. Since the seminal experiment by Couder et al (2006 Phys. Rev. Lett. 97 154101) there have been many attempts to accurately reproduce the experimental results.We propose to describe the trajectories of a walker using a Green function approach. The Green function is related to the Helmholtz equation with Neumann boundary conditions on the obstacle(s) and outgoing boundary conditions at infinity. For a single-slit geometry our model is exactly solvable and reproduces some general features observed experimentally. It stands for a promising candidate to account for the presence of arbitrary boundaries in the walker’s dynamics.
The relativistic Doppler effect: when a zero frequency shift or a red shift exists for sources approaching the observer
Creators: name: Wang, Changbiao
Publisher: name: arXiv
Year: 2010
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences
subject: 83

description: It is shown without making use of Lorentz transformation that there exists a phenomenon of relativistic zero-frequency shift in Doppler effect for a plane wave in free space, observed in two inertial frames of relative motion, and the zero shift takes place at a maximum aberration of light. When it is applied to analysis of a moving point light source, two unconventional physical implications result: (1) a light source, when it is approaching (moving closer to) the observer, may cause a red shift; (2) a zero-frequency-shift observation does not necessarily mean that the light source is not moving closer, and in contrast, the light source may be moving closer to the observer at a high speed. This fundamental result of special relativity may provide an alternative way to experimentally examine the principle of relativity, and might have a significant application in astrophysics.
description: (1) The words:"...for a plane wave in free space, observed in two inertial frames of relative motion,...the definitions of 'approaching' and 'receding' do not apply. When the zero-shift effect is applied to approximate analysis..." are added on p. 7. (2) "Reply to Comment by Sfarti" is added on p. 9. 7 figures, 9 pages