cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Permuted and Augmented Stick-Breaking Bayesian Multinomial Regression
Creators: name: Zhang, Quan
name: Zhou, Mingyuan
Publisher: name: arXiv
Year: 2016
Subjects: subject: Methodology (stat.ME)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: To model categorical response variables given their covariates, we propose a permuted and augmented stick-breaking (paSB) construction that one-to-one maps the observed categories to randomly permuted latent sticks. This new construction transforms multinomial regression into regression analysis of stick-specific binary random variables that are mutually independent given their covariate-dependent stick success probabilities, which are parameterized by the regression coefficients of their corresponding categories. The paSB construction allows transforming an arbitrary cross-entropy-loss binary classifier into a Bayesian multinomial one. Specifically, we parameterize the negative logarithms of the stick failure probabilities with a family of covariate-dependent softplus functions to construct nonparametric Bayesian multinomial softplus regression, and transform Bayesian support vector machine (SVM) into Bayesian multinomial SVM. These Bayesian multinomial regression models are not only capable of providing probability estimates, quantifying uncertainty, increasing robustness, and producing nonlinear classification decision boundaries, but also amenable to posterior simulation. Example results demonstrate their attractive properties and performance.
Elucidating fluctuating diffusivity in center-of-mass motion of polymer models with time-averaged mean-square-displacement tensor
Creators: name: Miyaguchi, Tomoshige
Publisher: name: arXiv
Year: 2017
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: There have been increasing reports that the diffusion coefficient of macromolecules depends on time and fluctuates randomly. Here, a novel method to elucidate the fluctuating diffusivity from trajectory data is developed. The time-averaged mean square displacement (MSD), a common tool in single-particle-tracking (SPT) experiments, is generalized into a second order tensor, with which information on both magnitude fluctuations and orientational fluctuations of the diffusivity can be clearly detected. This new method is utilized to analyze the center-of-mass motion of four polymer models, the Rouse model, the Zimm model, a reptation model, and a rigid rodlike polymer, and it is found that these models exhibit distinctly different types of magnitude and orientational fluctuations of the diffusivity. This method of the time-averaged MSD tensor can be applied also to the trajectory data obtained in SPT experiments.
description: 17 pages, 4 figures
Semi-abelian Z-theory: NLSM+phi^3 from the open string
Creators: name: Carrasco, John Joseph M.
name: Mafra, Carlos R.
name: Schlotterer, Oliver
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We continue our investigation of Z-theory, the second double-copy component of open-string tree-level interactions besides super-Yang-Mills (sYM). We show that the amplitudes of the extended non-linear sigma model (NLSM) recently considered by Cachazo, Cha, and Mizera are reproduced by the leading alpha'-order of Z-theory amplitudes in the semi-abelian case. The extension refers to a coupling of NLSM pions to bi-adjoint scalars, and the semi-abelian case involves to a partial symmetrization over one of the color orderings that characterize the Z-theory amplitudes. Alternatively, the partial symmetrization corresponds to a mixed interaction among abelian and non-abelian states in the underlying open-superstring amplitude. We simplify these permutation sums via monodromy relations which greatly increase the efficiency in extracting the alpha'-expansion of these amplitudes. Their alpha'-corrections encode higher-derivative interactions between NLSM pions and bi-colored scalars all of which obey the duality between color and kinematics. Through double-copy, these results can be used to generate the predictions of supersymmetric Dirac-Born-Infeld-Volkov-Akulov theory coupled with sYM as well as a complete tower of higher-order alpha'-corrections.
description: 27 pages, v2: published version
Optimal continuous variable quantum teleportation with limited resources
Creators: name: Liuzzo-Scorpo, Pietro
name: Mari, Andrea
name: Giovannetti, Vittorio
name: Adesso, Gerardo
Publisher: name: arXiv
Year: 2017
Subjects: subject: Quantum Physics (quant-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Given a certain amount of entanglement available as a resource, what is the most efficient way to accomplish a quantum task? We address this question in the relevant case of continuous variable quantum teleportation protocols implemented using two-mode Gaussian states with a limited degree of entanglement and energy. We first characterize the class of single-mode phase-insensitive Gaussian channels that can be simulated via a Braunstein--Kimble protocol with non-unit gain and minimum shared entanglement, showing that infinite energy is not necessary apart from the special cases of the quantum limited attenuator and amplifier. We also find that, apart from the identity, all phase-insensitive Gaussian channels can be simulated through a two-mode squeezed state with finite energy, albeit with a larger entanglement. We then consider the problem of teleporting single-mode coherent states with Gaussian-distributed displacement in phase space. Performing a geometrical optimization over phase-insensitive Gaussian channels, we determine the maximum average teleportation fidelity achievable with any finite entanglement and for any realistically finite variance of the input distribution.
description: 6 pages, 1 figure; published in PRL. Update: Eq. (9) has been corrected [previously, the states of Eq. (9) were unphysical for $\tau>1$]. Some statements regarding the finite-energy simulation of the quantum limited amplifier have been rectified
Computably Continuous Reinforcement-Learning Objectives are PAC-learnable
Creators: name: Yang, Cambridge
name: Littman, Michael
name: Carbin, Michael
Publisher: name: arXiv
Year: 2023
Subjects: subject: Machine Learning (cs.LG)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: In reinforcement learning, the classic objectives of maximizing discounted and finite-horizon cumulative rewards are PAC-learnable: There are algorithms that learn a near-optimal policy with high probability using a finite amount of samples and computation. In recent years, researchers have introduced objectives and corresponding reinforcement-learning algorithms beyond the classic cumulative rewards, such as objectives specified as linear temporal logic formulas. However, questions about the PAC-learnability of these new objectives have remained open. This work demonstrates the PAC-learnability of general reinforcement-learning objectives through sufficient conditions for PAC-learnability in two analysis settings. In particular, for the analysis that considers only sample complexity, we prove that if an objective given as an oracle is uniformly continuous, then it is PAC-learnable. Further, for the analysis that considers computational complexity, we prove that if an objective is computable, then it is PAC-learnable. In other words, if a procedure computes successive approximations of the objective's value, then the objective is PAC-learnable. We give three applications of our condition on objectives from the literature with previously unknown PAC-learnability and prove that these objectives are PAC-learnable. Overall, our result helps verify existing objectives' PAC-learnability. Also, as some studied objectives that are not uniformly continuous have been shown to be not PAC-learnable, our results could guide the design of new PAC-learnable objectives.
Well-posedness of the martingale problem for super-Brownian motion with interactive branching
Creators: name: Ji, Lina
name: Xiong, Jie
name: Yang, Xu
Publisher: name: arXiv
Year: 2023
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics

description: In this paper a martingale problem for super-Brownian motion with interactive branching is derived. The uniqueness of the solution to the martingale problem is obtained by using the pathwise uniqueness of the solution to a corresponding system of SPDEs with proper boundary conditions. The existence of the solution to the martingale problem and the local Hölder continuity of the density process are also studied.
Creation of nano-skyrmion lattice in Fe/Ir(111) system using voltage pulse
Creators: name: Yang, Yulong
name: Shuai, Mingming
name: Huang, Haiming
name: Song, Rui
name: Zhu, Yi
name: Liao, Yanghui
name: Zhu, Yinyan
name: Zhou, Xiaodong
name: Yin, Lifeng
name: Shen, Jian
Publisher: name: arXiv
Year: 2023
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Magnetic ultrathin films grown on heavy metal substrates often exhibit rich spin structures due to the competition between various magnetic interactions such as Heisenberg exchange, Dzyaloshinskii-Moriya interaction and higher-order spin interactions. Here we employ spin-polarized scanning tunneling microscopy to study magnetic nano-skyrmion phase in Fe monolayer grown on Ir(111) substrate. Our observations show that the formation of nano-skyrmion lattice in the Fe/Ir(111) system depends sensitively on the growth conditions and various non-skyrmion spin states can be formed. Remarkably, the application of voltage pulses between the tip and the sample can trigger a non-skyrmion to skyrmion phase transition. The fact that nano-skyrmions can be created using voltage pulse indicates that the balance between the competing magnetic interactions can be affected by an external electric field, which is highly useful to design skyrmion-based spintronic devices with low energy consumption.
Përpjeka e dytë e Balshës III gjatë viteve 1408-1421 për rivendosjen e sundimit të tij në Shkodër e rrethina (The second attempt of Balsha III during the years 1408-1421 to restore his rule in Shkodër and its surroundings)
Creators: name: Malaj, Edmond
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 430399
subject: Historical studies not elsewhere classified

description: The article presents a short part of the history of medieval Shkodra, which is about the efforts made by Balsha III with his mother Helena Balsha, to restore these lands under their rule during the years 1408-1421. These efforts of Balsha during this period reached their peak in 1418, during which he and his mother tried again to take Shkodra from the Venetians. These efforts are also described in the historical literature as the Second War of Blasha III for the conquest of Shkodra. In addition to these attempts to take Shkodra, the article also contains some information about the city of Drivasto and its conquest by Balsha III, about the city of Antibari, which he also conquered in 1412, and about the siege of Dulcigno. Balsha III’s efforts to conquer this province ended only with his death in April 1421, an event that also marks the end of the Balsha Dynasty and the extinction of this noble Family.
Convergence for varying measures in the topological case
Creators: name: Di Piazza, Luisa
name: Marraffa, Valeria
name: Musial, Kazimierz
name: Sambucini, Anna Rita
Publisher: name: arXiv
Year: 2023
Subjects: subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: Primary 28B20, Secondary 26E25, 26A39, 28B05, 46G10, 54C60, 54C65

description: In this paper convergence theorems for sequences of scalar, vector and multivalued Pettis integrable functions on a topological measure space are proved for varying measures vaguely convergent.
description: 21 pages
On the Educational Impact of ChatGPT: Is Artificial Intelligence Ready to Obtain a University Degree?
Creators: name: Malinka, Kamil
name: Perešíni, Martin
name: Firc, Anton
name: Hujňák, Ondřej
name: Januš, Filip
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computers and Society (cs.CY)
subject: FOS: Computer and information sciences

description: In late 2022, OpenAI released a new version of ChatGPT, a sophisticated natural language processing system capable of holding natural conversations while preserving and responding to the context of the discussion. ChatGPT has exceeded expectations in its abilities, leading to extensive considerations of its potential applications and misuse. In this work, we evaluate the influence of ChatGPT on university education, with a primary focus on computer security-oriented specialization. We gather data regarding the effectiveness and usability of this tool for completing exams, programming assignments, and term papers. We evaluate multiple levels of tool misuse, ranging from utilizing it as a consultant to simply copying its outputs. While we demonstrate how easily ChatGPT can be used to cheat, we also discuss the potentially significant benefits to the educational system. For instance, it might be used as an aid (assistant) to discuss problems encountered while solving an assignment or to speed up the learning process. Ultimately, we discuss how computer science higher education should adapt to tools like ChatGPT.
Evolution of Galactic Outflows at $z\sim0$-$2$ Revealed with SDSS, DEEP2, and Keck spectra
Creators: name: Sugahara, Yuma
name: Ouchi, Masami
name: Lin, Lihwai
name: Martin, Crystal L.
name: Ono, Yoshiaki
name: Harikane, Yuichi
name: Shibuya, Takatoshi
name: Yan, Renbin
Publisher: name: arXiv
Year: 2017
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We conduct a systematic study of galactic outflows in star-forming galaxies at $z\sim0$-$2$ based on the absorption lines of optical spectra taken from SDSS DR7, DEEP2 DR4, and Keck Erb et al. We carefully make stacked spectra of homogeneous galaxy samples with similar stellar mass distributions at $z\sim0$-$2$, and perform the multi-component fitting of model absorption lines and stellar continua to the stacked spectra. We obtain the maximum ($v_\rm{max}$) and central ($v_\rm{out}$) outflow velocities, and estimate the mass loading factors ($η$), a ratio of the mass outflow rate to the star formation rate (SFR). Investigating the redshift evolution of the outflow velocities measured with the absorption lines whose depths and ionization energies are similar (Na I D and Mg I at $z\sim0$-$1$; Mg II and C II at $z\sim1$-$2$), we identify, for the first time, that the average value of $v_\rm{max}$ ($v_\rm{out}$) significantly increases by 0.05-0.3 dex from $z\sim0$ to $2$ at a given SFR. Moreover, we find that the value of $η$ increases from $z\sim0$ to $2$ by $η\propto (1 + z)^{1.2\pm0.3}$ at a given halo circular velocity $v_\rm{cir}$ , albeit with a potential systematics caused by model parameter choices. The redshift evolution of $v_\rm{max}$ ($v_\rm{out}$) and $η$ is consistent with the galaxy-size evolution and the local velocity-SFR surface density relation, and explained by high-gas fractions in high-redshift massive galaxies, which is supported by recent radio observations. We obtain a scaling relation of $η\propto v_\rm{cir}^a$ for $a = -0.2 \pm 1.1$ in our $z\sim0$ galaxies that agrees with the momentum-driven outflow model ($a = -1$) within the uncertainty.
description: 13 pages, 10 figures, ApJ in press
New evidence for the precession of tilted disk in SDSS J081256.85+191157.8
Creators: name: Sun, Qi-Bin
name: Qian, Sheng-Bang
name: Zhu, Li-Ying
name: Liao, Wen-Ping
name: Zhao, Er-Gang
name: Li, Fu-Xing
name: Shi, Xiang-Dong
name: Li, Min-Yu
Publisher: name: arXiv
Year: 2023
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Super-orbital signals and negative superhumps are thought to be related to the reverse precession of the nodal line in a tilted disk, but the evidence is lacking. Our results provide new evidence for the precession of the tilted disk. Based on the TESS and K2 photometry, we investigate the super-orbital signals, negative superhumps, positive superhumps, and eclipse characteristics of the long-period eclipsing cataclysmic variable star SDSS J0812. We find super-orbital signals, negative superhumps, and positive superhumps with periods of 3.0451(5) d, 0.152047(2) d, and 0.174686(7) d, respectively, in the K2 photometry, but all disappear in the TESS photometry, where the positive superhumps are present only in the first half of the same campaign, confirming that none of them is permanently present in SDSS J0812. In addition, we find for the first time a cyclic variation of the O-C of minima, eclipse depth, and negative superhumps amplitudes for 3.045(8) d, 3.040(6) d, and 3.053(8) d in SDSS J0812, respectively, and all reach the maximum at ~ 0.75 precession phases of the tilted disk, which provides new evidence for the precession of the tilted disk. We suggest that the O-C and eclipse depth variations may come from a shift of the brightness center of the precession tilted disk. Our first finding on the periodic variation of negative superhumps amplitude with the super-orbital signals is significant evidence that the origin of negative superhumps is related to the precession of the tilted disk.
description: 21 pages, 16 figures, published in MNRAS
MPEC 2024-B153 : 2024 BC3
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2024
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2024 BC3

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.
A generalization of Ramanujan's congruence to modular forms of prime level
Creators: name: Gaba, Radu
name: Popa, Alexandru A.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11F11, 11F67

description: We prove congruences between cuspidal newforms and Eisenstein series of prime level, which generalize Ramanujan's congruence. Such congruences were recently found by Billerey and Menares, and we refine them by specifying the Atkin-Lehner eigenvalue of the newform involved. We show that similar refinements hold for the level raising congruences between cuspidal newforms of different levels, due to Ribet and Diamond. The proof relies on studying the new subspace and the Eisenstein subspace of the space of period polynomials for the congruence subgroup $Γ_0(N)$, and on a version of Ihara's lemma.
description: Ver. 3: Extended Theorem 3 to period polynomials of weight 2 modular forms, improved exposition and corrected minor errors. To appear in Journal of Number Theory, 20 pp
Real-time modelling of observation filter in the Remote Microphone Technique for an Active Noise Control application
Creators: name: Lai, Chung Kwan
name: Lam, Bhan
name: Shi, Dongyuan
name: Gan, Woon-Seng
Publisher: name: arXiv
Year: 2023
Subjects: subject: Signal Processing (eess.SP)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: The remote microphone technique (RMT) is often used in active noise control (ANC) applications to overcome design constraints in microphone placements by estimating the acoustic pressure at inconvenient locations using a pre-calibrated observation filter (OF), albeit limited to stationary primary acoustic fields. While the OF estimation in varying primary fields can be significantly improved through the recently proposed source decomposition technique, it requires knowledge of the relative source strengths between incoherent primary noise sources. This paper proposes a method for combining the RMT with a new source-localization technique to estimate the source ratio parameter. Unlike traditional source-localization techniques, the proposed method is capable of being implemented in a real-time RMT application. Simulations with measured responses from an open-aperture ANC application showed a good estimation of the source ratio parameter, which allows the observation filter to be modelled in real-time.
description: 5 pages, 5 figures. Submitted to 2023 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP2023)
Perception des interactions avec leurs enseignants et motivation scolaire des élèves
Creators: name: RICS, Revue
name: Genoud, Philippe
Publisher: name: figshare
Year: 2023
Subjects: Primary education

description: Cet article a pour objectif d’examiner de quelle manière la motivation peut être influencée par un facteur contextuel : le climat relationnel en classe. Plus spécifiquement, notre recherche vise à mettre en évidence les liens entre le profil interactionnel de l’enseignant tel que perçu par l’élève et différentes dimensions de la motivation, de manière différentielle selon la filière correspondant à trois niveaux d’exigence particuliers. Les données ont été récoltées en fin de scolarité obligatoire, auprès de 341 élèves suisses. Les analyses soulignent que les liens entre leurs perceptions des interactions en classe et la motivation auto-rapportée se distinguent selon la filière dans laquelle ils se trouvent. En particulier, les élèves de niveau intermédiaire semblent être en effet beaucoup plus sensibles à la qualité des interactions avec leurs enseignants que leurs pairs des autres filières.
Benchmarking the Impact of Noise on Deep Learning-based Classification of Atrial Fibrillation in 12-Lead ECG
Creators: name: Bender, Theresa
name: Gemke, Philip
name: Idrobo-Avila, Ennio
name: Dathe, Henning
name: Krefting, Dagmar
name: Spicher, Nicolai
Publisher: name: arXiv
Year: 2023
Subjects: subject: Signal Processing (eess.SP)
subject: Machine Learning (cs.LG)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Electrocardiography analysis is widely used in various clinical applications and Deep Learning models for classification tasks are currently in the focus of research. Due to their data-driven character, they bear the potential to handle signal noise efficiently, but its influence on the accuracy of these methods is still unclear. Therefore, we benchmark the influence of four types of noise on the accuracy of a Deep Learning-based method for atrial fibrillation detection in 12-lead electrocardiograms. We use a subset of a publicly available dataset (PTBXL) and use the metadata provided by human experts regarding noise for assigning a signal quality to each electrocardiogram. Furthermore, we compute a quantitative signal-to-noise ratio for each electrocardiogram. We analyze the accuracy of the Deep Learning model with respect to both metrics and observe that the method can robustly identify atrial fibrillation, even in cases signals are labelled by human experts as being noisy on multiple leads. False positive and false negative rates are slightly worse for data being labelled as noisy. Interestingly, data annotated as showing baseline drift noise results in an accuracy very similar to data without. We conclude that the issue of processing noisy electrocardiography data can be addressed successfully by Deep Learning methods that might not need preprocessing as many conventional methods do.
description: to be published in proceedings of Medical Informatics Europe 2023
Амарант – перспективная культура для кормления животных
Creators: name: Бибиков С.О.
name: Николаев С.И.
Publisher: name: Эффективное животноводство
Year: 2023
Subjects: амарант
зеленая масса амаранта
амарантовый жмых
кормление
amaranth
amaranth green mass
amaranth cake
animal feeding

description: В статье дан обзор перспективе применения амаранта и продуктов его переработки в кормлении животных, его влиянии на физиологические и продуктивные качества сельскохозяйственных животных, птицы, объекты аквакультуры.
description: The article gives an overview of the prospects for the use of amaranth and its byproducts in animal feeding, its impact on the physiological and productive qualities of farm animals, poultry, and aquaculture objects.
Cooperative elastic fluctuations provide tuning of the metal-insulator transition
Creators: name: Guzmán-Verri, G. G.
name: Brierley, R. T.
name: Littlewood, P. B.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Metal to insulator transitions (MITs) driven by strong electronic correlations are common in condensed matter systems, and are associated with some of the most remarkable collective phenomena in solids, including superconductivity and magnetism. Tuning and control of the transition holds the promise of novel, low power, ultrafast electronics, but the relative roles of doping, chemistry, elastic strain and other applied fields has made systematic understanding difficult to obtain. Here we point out that existing data on tuning of the MIT in perovskite transition metal oxides through ionic size effects provides evidence of systematic and large effects on the phase transition due to dynamical fluctuations of the elastic strain, which have been usually neglected. This is illustrated by a simple yet quantitative statistical mechanical calculation in a model that incorporates cooperative lattice distortions coupled to the electronic degrees of freedom. We reproduce the observed dependence of the transition temperature on cation radius in the well-studied manganite and nickelate materials. Since the elastic couplings are generically quite strong, these conclusions will broadly generalize to all MITs that couple to a change in lattice symmetry.
description: 14 pages, 4 figures, supplementary information included
On Convergence of Extended Dynamic Mode Decomposition to the Koopman Operator
Creators: name: Korda, Milan
name: Mezić, Igor
Publisher: name: arXiv
Year: 2017
Subjects: subject: Optimization and Control (math.OC)
subject: Dynamical Systems (math.DS)
subject: Spectral Theory (math.SP)
subject: FOS: Mathematics

description: Extended Dynamic Mode Decomposition (EDMD) is an algorithm that approximates the action of the Koopman operator on an $N$-dimensional subspace of the space of observables by sampling at $M$ points in the state space. Assuming that the samples are drawn either independently or ergodically from some measure $μ$, it was shown that, in the limit as $M\rightarrow\infty$, the EDMD operator $\mathcal{K}_{N,M}$ converges to $\mathcal{K}_N$, where $\mathcal{K}_N$ is the $L_2(μ)$-orthogonal projection of the action of the Koopman operator on the finite-dimensional subspace of observables. In this work, we show that, as $N \rightarrow \infty$, the operator $\mathcal{K}_N$ converges in the strong operator topology to the Koopman operator. This in particular implies convergence of the predictions of future values of a given observable over any finite time horizon, a fact important for practical applications such as forecasting, estimation and control. In addition, we show that accumulation points of the spectra of $\mathcal{K}_N$ correspond to the eigenvalues of the Koopman operator with the associated eigenfunctions converging weakly to an eigenfunction of the Koopman operator, provided that the weak limit of eigenfunctions is nonzero. As a by-product, we propose an analytic version of the EDMD algorithm which, under some assumptions, allows one to construct $\mathcal{K}_N$ directly, without the use of sampling. Finally, under additional assumptions, we analyze convergence of $\mathcal{K}_{N,N}$ (i.e., $M=N$), proving convergence, along a subsequence, to weak eigenfunctions (or eigendistributions) related to the eigenmeasures of the Perron-Frobenius operator. No assumptions on the observables belonging to a finite-dimensional invariant subspace of the Koopman operator are required throughout.
Primordial black hole dark matter from catastrogenesis with unstable pseudo-Goldstone bosons
Creators: name: Gelmini, Graciela B.
name: Hyman, Jonah
name: Simpson, Anna
name: Vitagliano, Edoardo
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We propose a new scenario for the formation of asteroid-mass primordial black holes (PBHs). Our mechanism is based on the annihilation of the string-wall network associated with the breaking of a $U(1)$ global symmetry into a discrete $Z_N$ symmetry. If the potential has multiple local minima ($N>1$) the network is stable, and the annihilation is guaranteed by a bias among the different vacua. The collapse of the string-wall network is accompanied by catastrogenesis, a large production of pseudo-Goldstone bosons (pGBs) -- e.g. axions, ALPs, or majorons -- gravitational waves, and PBHs. If pGBs rapidly decay into products that thermalize, as predicted e.g. in the high-quality QCD axion and heavy majoron models, they do not contribute to the dark matter population, but we show that PBHs can constitute 100\% of the dark matter. The gravitational wave background produced by catastrogenesis with heavy unstable axions, ALPs, or majorons could be visible in future interferometers.
description: 24 pages, 4 figures. Matches published version
A-infinity resolutions and the Golod property for monomial rings
Creators: name: Frankhuizen, Robin
Publisher: name: arXiv
Year: 2016
Subjects: subject: Algebraic Topology (math.AT)
subject: Commutative Algebra (math.AC)
subject: FOS: Mathematics
subject: 13D40, 55S30, 13D07, 16E45

description: Let R=S/I be a monomial ring whose minimal free resolution F is rooted. We describe an A-infinity algebra structure on F. Using this structure, we show that R is Golod if and only if the product on Tor^S(R,k) vanishes. Furthermore, we give a necessary and sufficient combinatorial condition for R to be Golod.
description: Several improvements have been made from the previous version; some examples and details added; to appear in Algebraic & Geometric Topology
Long-term experimental study of price responsive predictive control in a real occupied single-family house with heat pump
Creators: name: Thorsteinsson, Simon
name: Kalaee, Alex Arash Sand
name: Vogler-Finck, Pierre
name: Stærmose, Henrik Lund
name: Katic, Ivan
name: Bendtsen, Jan Dimon
Publisher: name: arXiv
Year: 2023
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: The continuous introduction of renewable electricity and increased consumption through electrification of the transport and heating sector challenges grid stability. This study investigates load shifting through demand side management as a solution. We present a four-month experimental study of a low-complexity, hierarchical Model Predictive Control approach for demand side management in a near-zero emission occupied single-family house in Denmark. The control algorithm uses a price signal, weather forecast, a single-zone building model, and a non-linear heat pump efficiency model to generate a space-heating schedule. The weather-compensated, commercial heat pump is made to act smart grid-ready through outdoor temperature input override to enable heat boosting and forced stops to accommodate the heating schedule. The cost reduction from the controller ranged from 2-33% depending on the chosen comfort level. The experiment demonstrates that load shifting is feasible and cost-effective, even without energy storage, and that the current price scheme provides an incentive for Danish end-consumers to shift heating loads. However, issues related to controlling the heat pump through input-manipulation were identified, and the authors propose a more promising path forward involving coordination with manufacturers and regulators to make commercial heat pumps truly smart grid-ready.
Top-down integration of a hBN quantum emitter in a monolithic photonic waveguide
Creators: name: Gérard, Domitille
name: Rosticher, Michael
name: Watanabe, Kenji
name: Taniguchi, Takashi
name: Barjon, Julien
name: Buil, Stéphanie
name: Hermier, Jean-Pierre
name: Delteil, Aymeric
Publisher: name: arXiv
Year: 2023
Subjects: subject: Optics (physics.optics)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Integrated quantum photonics, with potential applications in quantum information processing, relies on the integration of quantum emitters into on-chip photonic circuits. Hexagonal boron nitride (hBN) is recognized as a material that is compatible with such implementations, owing to its relatively high refractive index and low losses in the visible range, together with advantageous fabrication techniques. Here, we combine hBN waveguide nanofabrication with the recently demonstrated local generation of quantum emitters using electron irradiation to realize a fully top-down elementary quantum photonic circuit in this material, operating at room temperature. This proof of principle constitutes a first step towards deterministic quantum photonic circuits in hBN.
Formatação e normalização (ABNT) do arquivo relativo ao template da Revista Educação em Páginas (ISSN 2764-8028), da UESB, para 2023.
Creators: name: Nolasco, Marcelo
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 360205
subject: Technical writing

description: Arquivo relativo à formatação e normalização (ABNT) para o template da Revista Educação em Páginas (2764-8028),da UESB, atualizado em agosto de 2023.
Deformation of horizons during a merger
Creators: name: Hussain, Uzair
name: Booth, Ivan
Publisher: name: arXiv
Year: 2017
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We model an extreme mass ratio merger (EMR) as a point particle radially plunging into a large Schwarzschild black hole. We assume that the mass of the point particle, $μ$, is much smaller than the black hole mass M. Under this assumption we can employ the Zerilli formalism modified to include a source term which arises from the energy-momentum tensor of the small object. We solve the Zerilli equation by numerically evolving initial data. Then, we ray trace the null geodesics of the event horizon from after the merger backward in time to extract the geometry of the perturbed event horizon. Further, we take advantage of the axisymmetry of the setup to locate the apparent horizon and study its geometry.
description: 22 pages, 7 figures
Bayesian log-Gaussian Cox process regression: applications to meta-analysis of neuroimaging working memory studies
Creators: name: Samartsidis, Pantelis
name: Eickhoff, Claudia R.
name: Eickhoff, Simon B.
name: Wager, Tor D.
name: Barrett, Lisa Feldman
name: Atzil, Shir
name: Johnson, Timothy D.
name: Nichols, Thomas E.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Applications (stat.AP)
subject: FOS: Computer and information sciences

description: Working memory (WM) was one of the first cognitive processes studied with functional magnetic resonance imaging. With now over 20 years of studies on WM, each study with tiny sample sizes, there is a need for meta-analysis to identify the brain regions that are consistently activated by WM tasks, and to understand the interstudy variation in those activations. However, current methods in the field cannot fully account for the spatial nature of neuroimaging meta-analysis data or the heterogeneity observed among WM studies. In this work, we propose a fully Bayesian random-effects metaregression model based on log-Gaussian Cox processes, which can be used for meta-analysis of neuroimaging studies. An efficient Markov chain Monte Carlo scheme for posterior simulations is presented which makes use of some recent advances in parallel computing using graphics processing units. Application of the proposed model to a real data set provides valuable insights regarding the function of the WM.
Black hole-wormhole collisions and the emergence of islands
Creators: name: Dias, João M.
name: Frassino, Antonia M.
name: Paccoia, Valentin D.
name: Rocha, Jorge V.
Publisher: name: arXiv
Year: 2023
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We use ray-tracing techniques to determine the evolution of the event horizon of a large black hole that ``gobbles'' a tiny, traversable wormhole. This calculation has physical meaning in the extreme mass ratio limit. Two setups are considered: a single-mouth wormhole connecting two otherwise independent universes, and a double-mouth zero-length wormhole within the same universe. In the first setting it turns out that, at early times, there exist two disconnected horizons, one in each universe, which then merge as the wormhole falls into the large black hole. In the second setup, we observe the appearance of an `island', a region of spacetime that is spatially disconnected from the exterior of the black hole, but in causal contact with future null infinity. The island shrinks as time evolves and eventually disappears after sufficient time has elapsed, as compared to the distance between the two mouths. This provides a communication channel with the interior of the large black hole for a certain time interval. We compute numerically the lifetime of the island and verify that it depends linearly on the inter-mouth distance. Extending the analysis to wormholes with finite length, we show that the achronal averaged null energy condition prevents the appearance of islands.
description: 15 pages, 10 figures; v2: minor corrections, matches published version
Electromagnetic properties of massive neutrinos in low-energy elastic neutrino-electron scattering
Creators: name: Kouzakov, Konstantin A.
name: Studenikin, Alexander I.
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: A thorough account of electromagnetic interactions of massive neutrinos in the theoretical formulation of low-energy elastic neutrino-electron scattering is given. The formalism of neutrino charge, magnetic, electric, and anapole form factors defined as matrices in the mass basis is employed under the assumption of three-neutrino mixing. The flavor change of neutrinos traveling from the source to the detector is taken into account and the role of the source-detector distance is inspected. The effects of neutrino flavor-transition millicharges and charge radii in the scattering experiments are pointed out.
description: 16 pages, revtex; misprints in Eqs. (22), (29), and (32) corrected (along with other minor misprints throughout)
Erfolgreich veröffentlichen durch Open Access Die Angebote der SUB Hamburg
Creators: name: Meinecke, Isabella
name: Buck, Tobias
name: Krüger, Oliver
Publisher: name: Zenodo
Year: 2022
Subjects: institutionelle Publikationsdienste
Open Access
Open Science
Open Research
Qualitätssicherung
International Open Access Week 2022

description: Das Publizieren Ihrer wissenschaftlichen Arbeiten gehört zum Forschungsprozess und ist wichtiger Teil Ihrer akademischen Karriere. Neben Verlagen unterstützen auch wissenschaftliche Einrichtungen Sie bei diesem wichtigen Vorhaben. Die SUB Hamburg bietet mit dem Open-Access-Publikationsdienst Hamburg University Press eine Möglichkeit zur professionellen, fachlichen Standards gerechten
 Veröffentlichung von Monografien (auch Dissertationen) und Sammelbänden sowie zum Hosting wissenschaftlicher Zeitschriften.
 Die vorliegenden Folien wurden während einer digitalen Coffee Lecture präsentiert, die am 25.10.2022 im Rahmen der Aktivitäten der Staats- und Universitätsbibliothek Hamburg, organisiert von der Arbeitsstelle Open Science, zur International Open Access Week 2022 veranstaltet wurde.
Prevalencia y factores de riesgo asociados con la depresión  posparto, revisión bibliográfica
Creators: name: Caiza Paucar, Karla Estefania
name: María Jose, Gonzalón Maldonado
Publisher: name: Zenodo-HGOIA
Year: 2024

description: La depresión es un trastorno mental común considerado un problema de salud pública mundial la misma que afecta en mayor medida a las mujeres según la Organización Mundial de la Salud se define a la depresión posparto como un trastorno mental afectivo Severo que puede afectar a todas las mujeres en cualquier momento después del parto e incluso meses más tarde ocasionando efectos adversos sobre la salud de la madre y el niño
Effects of first- and second-order topological phases on equilibrium crystal shapes
Creators: name: Tanaka, Yutaro
name: Murakami, Shuichi
Publisher: name: arXiv
Year: 2023
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study equilibrium crystal shapes of a topological insulator (TI), a topological crystalline insulator (TCI) protected by mirror symmetry, and a second-order topological insulator (SOTI) protected by inversion symmetry. By adding magnetic fields to the three-dimensional TI, we can realize the mirror-symmetry-protected TCI and the inversion-symmetry-protected SOTI. They each have topological boundary states in different positions: the TCI has gapless states on the surfaces that are invariant under the symmetry operation, and the SOTI has gapless states at the intersections between certain surfaces. In this paper, we discuss how these boundary states affect the surface energies and the equilibrium crystal shapes in terms of the calculations of the simple tight-binding model by using the Wulff construction. By comparing the changes in the shapes of the TI to that of the trivial insulator through the process of applying the magnetic fields, we show that the presence/absence of the topological boundary states affects the emergence of the specific facets in a different way from the trivial insulator.
description: 13 pages, 12 figures
title: Groundwater-systems in mining areas – The influence of water bearing adits
Creators: name:  Rudolph ,   Tobias
name:  Melchers ,   Christian
name:  Goerke-Mallet ,   Peter
name:  Engel ,   Detlef
Publisher: name: Deutsche Geologische Gesellschaft - Geologische Vereinigung e.V. (DGGV)
Year: 2021

description: Water bearing adits form a historic near-surface underground drainage and outflow systems whose functionality is of considerable importance in many mining areas all over the world. Water bearing adits are technical structures that have often been in place and in operation for more than two centuries. In most cases, they are no longer accessible directly behind the tunnel portal. Therefore, stable hydraulic, geotechnical and rock mechanical conditions are important, otherwise the hydraulic system would collapse. In recent years, the Research Centre of Post-Mining has investigated the current situation of a large number of water bearing adits in the southern Ruhr area/Germany. To understand the interaction with the groundwater- systems hydrochemical parameters were analysed, the rate of discharge and of precipitation compared. An essential step is the spatiotemporal evaluation of available mine survey maps of the water bearing adits and the hydraulically connected mine workings. This is needed in order to determine the catchment area of a water bearing adits within the groundwater-system. To further enhance the process understanding the results from monitoring-stations, special depth-dependent hydrochemical sampling campaigns in former shafts and infiltration/tracer tests in ditches/local streams were integrated. The entire data fusion happened in 3D geological/hydrogeological subsurface models. This integrated subsurface understanding is now the enabler for the implementation of a risk monitoring and management system for this sensitive system of water bearing adits.
Atualização da para formatação e normalização (ABNT) do arquivo relativo ao template da Revista Práxis Educacional (ISSN 2178-2679) para 2024, da Universidade Estadual do Sudoeste da Bahia (UESB).
Creators: name: Nolasco, Marcelo
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 360205
subject: Technical writing

description: Arquivo relativo à formatação e normalização (ABNT) para o template da Revista Práxis Educacional (2178-2679) atualizado em janeiro de 2024.
Extremes of Multi-type Branching Random Walks: Heaviest Tail Wins
Creators: name: Bhattacharya, Ayan
name: Maulik, Krishanu
name: Palmowski, Zbigniew
name: Roy, Parthanil
Publisher: name: arXiv
Year: 2016
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60J70, 60G55 (Primary), 60J80 (Secondary)

description: We consider a branching random walk on a multi($Q$)-type, supercritical Galton-Watson tree which satisfies Kesten-Stigum condition. We assume that the displacements associated with the particles of type $Q$ have regularly varying tails of index $α$, while the other types of particles have lighter tails than that of particles of type $Q$. In this article, we derive the weak limit of the sequence of point processes associated with the positions of the particles in the $n^{th}$ generation. We verify that the limiting point process is a randomly scaled scale-decorated Poisson point process (SScDPPP) using the tools developed in \cite{bhattacharya:hazra:roy:2016}. As a consequence, we shall obtain the asymptotic distribution of the position of the rightmost particle in the $n^{th}$ generation.
Präsentationsfolien: (FAIRe) Forschungsdaten, Open Access und neue Formen der Kommunikation in der Romanistik – Beiträge des FID zur Gestaltung des digitalen Wandels (XXXVII Romanistentag, 5.10.2021)
Creators: name: Trapp, Markus
name: von Vacano, Johannes
Publisher: name: Zenodo
Year: 2021
Subjects: subject: Romanistik
subject: Romanistentag 2021
subject: FID Romanistik
subject: gnd:4050484-0
subject: gnd:1052053750
subject: https://www.wikidata.org/wiki/Q63870266
subject: https://lccn.loc.gov/n83729755
subject: http://datos.bne.es/resource/XX527738
subject: https://catalogue.bnf.fr/ark:/12148/cb11933098r
subject: http://id.worldcat.org/fast/1099881

description: Präsentationsfolien zum Vortrag „ (FAIRe) Forschungsdaten, Open Access und neue Formen der Kommunikation in der Romanistik – Beiträge des FID zur Gestaltung des digitalen Wandels “, gehalten am 5. Oktober 2021 im Rahmen des XXXVII. Romanistentags (4.-7. Oktober 2021), Augsburg, in der Sektion „Digital, global, transdisziplinär: Impulse für eine transdisziplinäre Digitale Romanistik“ (Sektionsprogramm). Referenten: Markus Trapp, Johannes von Vacano (FID Romanistik)