cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Representing distributive lattices with Galois connections in terms of rough sets
Creators: name: Dzik, Wojciech
name: Järvinen, Jouni
name: Kondo, Michiro
Publisher: name: arXiv
Year: 2013
Subjects: subject: Rings and Algebras (math.RA)
subject: Logic (math.LO)
subject: FOS: Mathematics
subject: 06B15 (Primary) 03B20, 03B42, 03G25 (Secondary)

description: This paper studies expansions of bounded distributive lattices equipped with a Galois connection. We introduce GC-frames and canonical frames for these algebras. The complex algebras of GC-frames are defined in terms of rough set approximation operators. We prove that each bounded distributive lattice with a Galois connection can be embedded into the complex algebra of its canonical frame. We show that for every spatial Heyting algebra $L$ equipped with a Galois connection, there exists a GC-frame such that $L$ is isomorphic to the complex algebra of this frame, and an analogous result holds for weakly atomic Heyting-Brouwer algebras with a Galois connection. In each case of representation, given Galois connections are represented by rough set upper and lower approximations.
description: 12 pages
Self-bound Doubly-Dipolar Bose-Einstein condensates
Creators: name: Mishra, Chinmayee
name: Santos, Luis
name: Nath, Rejish
Publisher: name: arXiv
Year: 2019
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We analyze the physics of self-bound droplets in a doubly dipolar Bose-Einstein condensate (DDBEC) composed by particles with both electric and magnetic dipole moments. Using the particularly relevant case of dysprosium, we show that the anisotropy of the doubly-dipolar interaction potential is highly versatile and nontrivial, depending critically on the relative orientation and strength between the two dipole moments. This opens novel possibilities for exploring intriguing quantum many-body physics. Interestingly, by varying the angle between the two dipoles we find a dimensional crossover from quasi one-dimensional to quasi two-dimensional self-bound droplets. This opens a so far unique scenario in condensate physics, in which a dimensional crossover is solely driven by interactions in the absence of any confinement.
description: 12 pages, 7 figures
The betrayal of the East Asian Enlightenment
Creators: name: Hwang, Minhyuk
Publisher: name: No Publisher Supplied
Year: 2018

description: This study explores the intellectual tradition Fukuzawa Yukichi, a renowned Japanese political theorist of the nineteenth century, initiated. Fukuzawa was not only the proponent of liberalism whose Western ideas spread to East Asia, but also the most representative liberal of his time. His life and thought represented the general history of East Asian liberalism—its rise, frustration, and betrayal. Many scholars acknowledge Fukuzawa’s contribution in spreading liberalism and enlightenment in his early life and awakening the dormant masses in Asia to face the modern world. Fukuzawa, however, later betrayed transnational solidarity in Asia and encouraged imperialism in Japan, which naturally drew heavy criticism. Understandably, postmodernists regard Fukuzawa’s betrayal as a fundamental failure of Western modernity and, further, the problem inherent in the idea of enlightenment and “progress” as such. This study is an attempt to defend Fukuzawa’s project of East Asian enlightenment against the postmodern critique and find the universal significance of the tradition—not just in the Asian context. The impulse of imperialist expansion and totalitarianism came from the frustration of enlightenment rather than its continuation and extension. As this study will show, the frustration of the Enlightenment and liberalism was due to the liberals’ failure to maintain their own commitment to progress and universal rights.
Decomposition of Diagonal Hermitian Quantum Gates Using Multiple-Controlled Pauli Z Gates
Creators: name: Houshmand, Mahboobeh
name: Zamani, Morteza Saheb
name: Sedighi, Mehdi
name: Arabzadeh, Mona
Publisher: name: arXiv
Year: 2014
Subjects: subject: Emerging Technologies (cs.ET)
subject: Quantum Physics (quant-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: Quantum logic decomposition refers to decomposing a given quantum gate to a set of physically implementable gates. An approach has been presented to decompose arbitrary diagonal quantum gates to a set of multiplexed-rotation gates around z axis. In this paper, a special class of diagonal quantum gates, namely diagonal Hermitian quantum gates, is considered and a new perspective to the decomposition problem with respect to decomposing these gates is presented. It is first shown that these gates can be decomposed to a set that solely consists of multiple-controlled Z gates. Then a binary representation for the diagonal Hermitian gates is introduced. It is shown that the binary representations of multiple-controlled Z gates form a basis for the vector space that is produced by the binary representations of all diagonal Hermitian quantum gates. Moreover, the problem of decomposing a given diagonal Hermitian gate is mapped to the problem of writing its binary representation in the specific basis mentioned above. Moreover, CZ gate is suggested to be the two-qubit gate in the decomposition library, instead of previously used CNOT gate. Experimental results show that the proposed approach can lead to circuits with lower costs in comparison with the previous ones.
description: To Appear in ACM Journal on Emerging Technologies in Computing Systems
Dilated floor functions having nonnegative commutator II. Negative dilations
Creators: name: Lagarias, Jeffrey C.
name: Richman, D. Harry
Publisher: name: arXiv
Year: 2019
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11A25 (Primary), 11B83, 11D07, 11Z05, 26D07, 52C05 (Secondary)

description: This paper completes the classification of the set $S$ of all real parameter pairs $(α,β)$ such that the dilated floor functions $f_α(x) = \lfloor{αx}\rfloor$, $f_β(x) = \lfloor{βx}\rfloor$ have a nonnegative commutator, i.e. $ [ f_α, f_β](x) = \lfloor{α\lfloor{βx}\rfloor}\rfloor - \lfloor{β\lfloor{αx}\rfloor}\rfloor \geq 0$ for all real $x$. This paper treats the case where both dilation parameters $α, β$ are negative. This result is equivalent to classifying all positive $α, β$ satisfying $ \lfloor{α\lceil{βx}\rceil}\rfloor - \lfloor{β\lceil{αx}\rceil}\rfloor \geq 0$ for all real $x$. The classification analysis is connected with the theory of Beatty sequences and with the Diophantine Frobenius problem in two generators.
description: 18 pages, 8 figures
Toward a construction of scalar-flat Kähler metrics on affine algebraic manifolds
Creators: name: Aoi, Takahiro
Publisher: name: arXiv
Year: 2019
Subjects: subject: Differential Geometry (math.DG)
subject: Analysis of PDEs (math.AP)
subject: Complex Variables (math.CV)
subject: FOS: Mathematics
subject: 53C25

description: Let $(X,L_{X})$ be an $n$-dimensional polarized manifold. Let $D$ be a smooth hypersurface defined by a holomorphic section of $L_{X}$. In this paper, we study the existence of a complete scalar-flat Kähler metric on $X \setminus D$ on the assumption that $D$ has a constant positive scalar curvature Kähler metric.
description: 28 pages, no figures, This paper is merged with arXiv:1908.05583 and arXiv:1910.12317 and appear in Math. Z
Log-Hessian and Deviation Bounds for Markov Semi-Groups, and Regularization Effect in $L^1$
Creators: name: Gozlan, Nathael
name: Li, Xue-Mei
name: Madiman, Mokshay
name: Roberto, Cyril
name: Samson, Paul-Marie
Publisher: name: arXiv
Year: 2019
Subjects: subject: Probability (math.PR)
subject: Functional Analysis (math.FA)
subject: FOS: Mathematics

description: It is well known that some important Markov semi-groups have a "regularization effect" -- as for example the hypercontractivity property of the noise operator on the Boolean hypercube or the Ornstein-Uhlenbeck semi-group on the real line, which applies to functions in $L^p$ for $p>1$. Talagrand had conjectured in 1989 that the noise operator on the Boolean hypercube has a further subtle regularization property for functions that are just integrable, but this conjecture remains open. Nonetheless, the Gaussian analogue of this conjecture was proven in recent years by Eldan-Lee and Lehec, by combining an inequality for the log-Hessian of the Ornstein-Uhlenbeck semi-group with a new deviation inequality for log-semi-convex functions under Gaussian measure. In this work, we explore the question of how much more general this phenomenon is. Specifically, our first goal is to explore the validity of both these ingredients for some diffusion semi-groups in $\mathbb{R}^n$, as well as for the $M/M/\infty$ queue on the non-negative integers and the Laguerre semi-groups on the positive real line. Our second goal is to prove a one-dimensional regularization effect for these settings, even in those cases where these ingredients are not valid.
description: 33 pages
Almost scalar-flat Kähler metrics on affine algebraic manifolds
Creators: name: Aoi, Takahiro
Publisher: name: arXiv
Year: 2019
Subjects: subject: Differential Geometry (math.DG)
subject: Analysis of PDEs (math.AP)
subject: Complex Variables (math.CV)
subject: FOS: Mathematics
subject: 53C25

description: Let $(X,L_{X})$ be an $n$-dimensional polarized manifold. Let $D$ be a smooth hypersurface defined by a holomorphic section of $L_{X}$. In this paper, we show the existence of a complete Kähler metric on $X \setminus D$ whose scalar curvature is flat away from some divisor if there are positive integers $l(>n),m$ such that the line bundle $K_{X}^{-l} \otimes L_{X}^{m}$ is very ample and the ratio $m/l$ is sufficiently small.
description: 24 pages, no figures, This paper is merged with arXiv:1907.09780 and arXiv:1910.12317 and appear in Math. Z
A stochastic MPC scheme for distributed systems with multiplicative uncertainty
Creators: name: Mark, Christoph
name: Liu, Steven
Publisher: name: arXiv
Year: 2019
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics

description: This paper presents a Distributed Stochastic Model Predictive Control algorithm for networks of linear systems with multiplicative uncertainties and local chance constraints on the states and control inputs. The chance constraints are approximated via Cantelli's inequality by means of expected value and covariance. The cooperative control algorithm is based on the distributed Alternating Direction Method of Multipliers, which renders the controller fully distributedly implementable, recursively feasible and ensures point-wise convergence of the states. The aforementioned properties are guaranteed through a properly selected distributed invariant set and distributed terminal constraints for the mean and covariance. The paper closes with an example highlighting the chance constraint satisfaction, numerical properties and scalability of our approach.
description: Accepted for publication in Automatica
Dynamics for discrete subgroups of $\operatorname{SL}_2(\mathbb C)$
Creators: name: Oh, Hee
Publisher: name: arXiv
Year: 2019
Subjects: subject: Dynamical Systems (math.DS)
subject: Geometric Topology (math.GT)
subject: FOS: Mathematics

description: Margulis wrote in the preface of his book Discrete subgroups of semisimple Lie groups that "A number of important topics have been omitted. The most significant of these is the theory of Kleinian groups and Thurston's theory of 3-dimensional manifolds: these two theories can be united under the common title of Theory of discrete subgroups of $\operatorname{SL}_2(\mathbb C)$." In this article, we will discuss a few recent advances regarding this missing topic from his book, which were influenced by his earlier works.
description: The statement of Lemma 5.1(1) corrected
Realization of graded matrix algebras as Leavitt path algebras
Creators: name: Vas, Lia
Publisher: name: arXiv
Year: 2019
Subjects: subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics
subject: 16W50, 16S50, 16D70

description: While every matrix algebra over a field $K$ can be realized as a Leavitt path algebra, this is not the case for every graded matrix algebra over a graded field. We provide a complete description of graded matrix algebras over a field, trivially graded by the ring of integers, which are graded isomorphic to Leavitt path algebras. As a consequence, we show that there are graded corners of Leavitt path algebras which are not graded isomorphic to Leavitt path algebras. This contrasts a recent result stating that every corner of a Leavitt path algebra of a finite graph is isomorphic to a Leavitt path algebra. If $R$ is a finite direct sum of graded matricial algebras over a trivially graded field and over naturally graded fields of Laurent polynomials, we also present conditions under which $R$ can be realized as a Leavitt path algebra.
description: arXiv admin note: substantial text overlap with arXiv:1905.10865
Complete scalar-flat Kähler metrics on affine algebraic manifolds
Creators: name: Aoi, Takahiro
Publisher: name: arXiv
Year: 2019
Subjects: subject: Differential Geometry (math.DG)
subject: Analysis of PDEs (math.AP)
subject: Complex Variables (math.CV)
subject: FOS: Mathematics
subject: 53C25

description: Let $(X,L_{X})$ be an $n$-dimensional polarized manifold. Let $D$ be a smooth hypersurface defined by a holomorphic section of $L_{X}$. We prove that if $D$ has a constant positive scalar curvature Kähler metric, $X \setminus D$ admits a complete scalar-flat Kähler metric, under the following three conditions: (i) $n \geq 6$ and there is no nonzero holomorphic vector field on $X$ vanishing on $D$, (ii) an average of a scalar curvature on $D$ denoted by $\hat{S}_{D}$ satisfies the inequality $0 < 3 \hat{S}_{D} < n(n-1)$, (iii) there are positive integers $l(>n),m$ such that the line bundle $K_{X}^{-l} \otimes L_{X}^{m}$ is very ample and the ratio $m/l$ is sufficiently small.
description: 18 pages, no figures, This paper is merged with arXiv:1907.09780 and arXiv:1908.05583 and appear in Math. Z./
Improved bounds on the size of the smallest representation of relation algebra $32_{65}$
Creators: name: Alm, Jeremy F.
name: Levet, Michael
name: Moazami, Saeed
name: Montero-Vallejo, Jorge
name: Pham, Linda
name: Sexton, Dave
name: Xu, Xiaonan
Publisher: name: arXiv
Year: 2019
Subjects: subject: Logic (math.LO)
subject: Logic in Computer Science (cs.LO)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: 03G15

description: In this paper, we shed new light on the spectrum of the relation algebra we call $A_{n}$, which is obtained by splitting the non-flexible diversity atom of $6_{7}$ into $n$ symmetric atoms. Precisely, we show that the minimum value in $\text{Spec}(A_{n})$ is at most $2n^{6 + o(1)}$, which is the first polynomial bound and improves upon the previous bound due to Dodd \& Hirsch (\textit{J. Relational Methods in Computer Science} 2013). We also improve the lower bound to $2n^{2} + 4n + 1$, which is asymptotically double the trivial bound of $n^{2} + 2n + 3$. In the process, we obtain stronger results regarding $\text{Spec}(A_{2}) =\text{Spec}(32_{65})$. Namely, we show that $1024$ is in the spectrum, and no number smaller than 26 is in the spectrum. Our improved lower bounds were obtained by employing a SAT solver, which suggests that such tools may be more generally useful in obtaining representation results.
description: 17 pages
Geometric stochastic analysis on path spaces
Creators: name: Elworthy, K. D.
name: Li, Xue-Mei
Publisher: name: arXiv
Year: 2019
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics

description: An approach to analysis on path spaces of Riemannian manifolds is described. The spaces are furnished with `Brownian motion' measure which lies on continuous paths, though differentiation is restricted to directions given by tangent paths of finite energy. An introduction describes the background for paths on ${\mathbb R}^m$ and Malliavin calculus. For manifold valued paths the approach is to use `Itô' maps of suitable stochastic differential equations as charts . `Suitability' involves the connection determined by the stochastic differential equation. Some fundamental open problems concerning the calculus and the resulting `Laplacian' are described. A theory for more general diffusion measures is also briefly indicated. The same method is applied as an approach to getting over the fundamental difficulty of defining exterior differentiation as a closed operator, with success for one \& two forms leading to a Hodge -Kodaira operator and decomposition for such forms. Finally there is a brief description of some related results for loop spaces.
Transit confirmation and improved stellar and planet parameters for the super-Earth HD 97658 b and its host star
Creators: name: Van Grootel, V.
name: Gillon, M.
name: Valencia, D.
name: Madhusudhan, N.
name: Dragomir, D.
name: Howe, A. R.
name: Burrows, A. S.
name: Demory, B. -O.
name: Deming, D.
name: Ehrenreich, D.
name: Lovis, C.
name: Mayor, M.
name: Pepe, F.
name: Queloz, D.
name: Scuflaire, R.
name: Seager, S.
name: Segransan, D.
name: Udry, S.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Super-Earths transiting nearby bright stars are key objects that simultaneously allow for accurate measurements of both their mass and radius, providing essential constraints on their internal composition. We present here the confirmation, based on Spitzer transit observations, that the super-Earth HD 97658 b transits its host star. HD 97658 is a low-mass ($M_*=0.77\pm0.05\,M_{\odot}$) K1 dwarf, as determined from the Hipparcos parallax and stellar evolution modeling. To constrain the planet parameters, we carry out Bayesian global analyses of Keck-HIRES radial velocities, and MOST and Spitzer photometry. HD 97658 b is a massive ($M_P=7.55^{+0.83}_{-0.79} M_{\oplus}$) and large ($R_{P} = 2.247^{+0.098}_{-0.095} R_{\oplus}$ at 4.5 $μ$m) super-Earth. We investigate the possible internal compositions for HD 97658 b. Our results indicate a large rocky component, by at least 60% by mass, and very little H-He components, at most 2% by mass. We also discuss how future asteroseismic observations can improve the knowledge of the HD 97658 system, in particular by constraining its age. Orbiting a bright host star, HD 97658 b will be a key target for coming space missions TESS, CHEOPS, PLATO, and also JWST, to characterize thoroughly its structure and atmosphere.
description: 8 figures, accepted to ApJ
Formulae for the derivatives of heat semigroups
Creators: name: Elworthy, K. D.
name: Li, Xue-Mei
Publisher: name: arXiv
Year: 2019
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics

description: We use a basic martingale method to show a differentiation formula for the derivatives $$d(P_tf)(x_0)(v_0)={1\over t} E f(x_t) \int_0^t \langle Y(x_s)(v_s),dB_t\rangle_{R^m}.$$ These are proved first on $R^n$, then on manifolds. Afterwards for solutions of heat equations on differential forms, and a second order formula.
Lower order terms of the one level density of a family of quadratic Hecke $L$-functions
Creators: name: Gao, Peng
name: Zhao, Liangyi
Publisher: name: arXiv
Year: 2019
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11F11, 11L40, 11M06, 11M26, 11M50

description: In this paper, we study lower order terms of the $1$-level density of low-lying zeros of quadratic Hecke L-functions in the Gaussian field. Assuming the Generalized Riemann Hypothesis, our result is valid for even test functions whose Fourier transforms are supported in $(-2, 2)$. Moreover, we apply the ratios conjecture of $L$-functions to derive these lower order terms as well. Up to the first lower order term, we show that our results is consistent with each other, when the Fourier transforms of the test functions are supported in $(-2, 2)$.
description: 28 pages
Optimization of Convolutional Neural Network Using the Linearly Decreasing Weight Particle Swarm Optimization
Creators: name: Serizawa, T.
name: Fujita, H.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Neural and Evolutionary Computing (cs.NE)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Convolutional neural network (CNN) is one of the most frequently used deep learning techniques. Various forms of models have been proposed and im-proved for learning at CNN. When learning with CNN, it is necessary to determine the optimal hyperparameters. However, the number of hyperparameters is so large that it is difficult to do it manually, so much research has been done on automation. A method that uses metaheuristic algorithms is attracting attention in research on hyperparameter optimization. Metaheuristic algorithms are naturally inspired and include evolution strategies, genetic algorithms, antcolony optimization and particle swarm optimization. In particular, particle swarm optimization converges faster than genetic algorithms, and various models have been proposed. In this paper, we pro-pose CNN hyperparameter optimization with linearly decreasing weight particle swarm optimization (LDWPSO). In the experiment, the MNIST data set and CIFAR-10 data set, which are often used as benchmark data sets, are used. By opti-mizing CNN hyperparameters with LDWPSO, learning the MNIST and CIFAR-10 datasets, we compare the accuracy with a standard CNN based on LeNet-5. As a result, when using the MNIST dataset, the baseline CNN is 94.02% at the 5th epoch, compared to 98.95% for LDWPSO CNN, which improves accuracy. When using the CIFAR-10 dataset, the Baseline CNN is 28.07% at the 10th epoch, compared to 69.37% for the LDWPSO CNN, which greatly improves accuracy. This paper is presented at the 36th Annual Conference of the Japanese Society for Artificial In-telligence. The final version is available at the following URL: https://doi.org/10.11517/pjsai.JSAI2022.0_2S4IS2b03
description: This paper is presented at the 36th Annual Conference of the Japanese Society for Artificial In-telligence
Controlling mobility via rapidly oscillating time-periodic stimulus
Creators: name: Sarkar, Prasun
name: Maity, Alok Kumar
name: Shit, Anindita
name: Chattopadhyay, Sudip
name: Chaudhuri, Jyotipratim Ray
name: Banik, Suman K
Publisher: name: arXiv
Year: 2014
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: To address the dynamics of a Brownian particle on a periodic symmetric substrate under high-frequency periodic forcing with a vanishing time average, we construct an effective Langevin dynamics by invoking Kapitza-Landau time window. Our result is then exploited to simulate the mobility both for original and effective dynamics which are in good agreement with theoretical predictions. This close agreement and the enhancement of mobility are very robust against the tailoring of amplitude-to-frequency ratio which substantiates the correctness of our calculation. Present results may be illuminating for understanding the dynamics of cold atoms in electromagnetic fields.
description: This paper has been withdrawn by the author due to text overlap with arXiv:nlin/0301033 by other authors
A stochastic output-feedback MPC scheme for distributed systems
Creators: name: Mark, Christoph
name: Liu, Steven
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics

description: In this paper, we present a novel stochastic output-feedback MPC scheme for distributed systems with additive process and measurement noise. The chance constraints are treated with the concept of probabilistic reachable sets, which, under an unimodality assumption on the disturbance distributions are guaranteed to be satisfied in closed-loop. By conditioning the initial state of the optimization problem on feasibility, the fundamental property of recursive feasibility is ensured. Closed-loop chance constraint satisfaction, recursive feasibility and convergence to an asymptotic average cost bound are proven. The paper closes with a numerical example of three interconnected subsystems, highlighting the chance constraint satisfaction and average cost compared to a centralized setting.
description: 2020 American Control Conference
Feedback-regulated Super Massive Black Hole Seed Formation
Creators: name: Dijkstra, Mark
name: Ferrara, Andrea
name: Mesinger, Andrei
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The nature of the seeds of high-redshift supermassive black holes (SMBHs) is a key question in cosmology. Direct collapse black holes (DCBH) that form in pristine, atomic-line cooling halos, illuminated by a Lyman-Werner (LW) UV flux exceeding a critical threshold J_crit, represent an attractive possibility. We investigate when and where these conditions are met during cosmic evolution. For the LW intensity, J_LW, we account for departures from the background value in close proximity to star forming galaxies. For the pristine halo fraction, we account for both (i) supernova driven outflows, and (ii) the inherent pollution from progenitor halos. We estimate the abundance of DCBH formation sites, n_DCBH(z), and find that it increases with cosmic time from n_DCBH(z=20) ~ 1e-12 -1e-7 cMpc^-3 to n_DCBH(z=10) ~ 1e-10 - 1e-5 cMpc^-3. Our analysis shows the possible importance of galactic winds, which can suppress the predicted n_DCBH by several orders of magnitude, and cause DCBH formation to preferentially occur around the UV-brightest (M_UV ~ -22 to -20) star forming galaxies. Our analysis further highlights the dependence of these predictions on (i) the escape fraction of LW photons, (ii) J_crit, and (iii) the galactic outflow prescription.
description: 13 pages, 9 figures, accepted to MNRAS
Emerging Technologies and Research Challenges for 5G Wireless Networks
Creators: name: Chin, Woon Hau
name: Fan, Zhong
name: Haines, Russell J.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: As the take-up of Long Term Evolution (LTE)/4G cellular accelerates, there is increasing interest in technologies that will define the next generation (5G) telecommunication standard. This paper identifies several emerging technologies which will change and define the future generations of telecommunication standards. Some of these technologies are already making their way into standards such as 3GPP LTE, while others are still in development. Additionally, we will look at some of the research problems that these new technologies pose.
description: Accepted for publication in IEEE Wireless Communications April 2014
Agrypnus afflictus Hayek 1973
Creators: name: Kotru, Akash
name: Chandran, Nithya
name: Dubey, Anil Kumar
name: Prosvirov, Alexander S.
Publisher: name: Zenodo
Year: 2025
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Elateridae
Agrypnus
Agrypnus afflictus

description: Agrypnus afflictus (Candèze, 1874)
Lacon afflictus Candèze, 1874: 68.
Adelocera afflictus (Candèze) Fleutiaux, 1926: 98.
Agrypnus afflictus (Candèze) Hayek, 1973: 122.
Type depository. Lectotype (BMNH).
Type locality. Malaysia (Penang Hills).
Distribution. India: West Bengal. Elsewhere: Borneo, Malayasia, Thailand (Hayek, 1973).
Literature. Candèze (1874: 68): original description; Fleutiaux (1926: 98): combination; Hayek (1973: 122): combination: Catalogue; Chakraborty and Chakrabarti (2006: 31): records of the zoological survey of India, occasional paper no. 254.
description: Published as part of Kotru, Akash, Chandran, Nithya, Dubey, Anil Kumar & Prosvirov, Alexander S., 2025, A catalogue of Indian Agrypninae Candèze, 1857 (Coleoptera: Elateridae), pp. 1-66 in Zootaxa 5614 (1) on page 12, DOI: 10.11646/zootaxa.5614.1.1, http://zenodo.org/record/15217075
Security of HyperLogLog (HLL) Cardinality Estimation: Vulnerabilities and Protection
Creators: name: Reviriego, Pedro
name: Ting, Daniel
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: Count distinct or cardinality estimates are widely used in network monitoring for security. They can be used, for example, to detect the malware spread, network scans, or a denial of service attack. There are many algorithms to estimate cardinality. Among those, HyperLogLog (HLL) has been one of the most widely adopted. HLL is simple, provides good cardinality estimates over a wide range of values, requires a small amount of memory, and allows merging of estimates from different sources. However, as HLL is increasingly used to detect attacks, it can itself become the target of attackers that want to avoid being detected. To the best of our knowledge, the security of HLL has not been studied before. In this letter, we take an initial step in its study by first exposing a vulnerability of HLL that allows an attacker to manipulate its estimate. This shows the importance of designing secure HLL implementations. In the second part of the letter, we propose an efficient protection technique to detect and avoid the HLL manipulation. The results presented strongly suggest that the security of HLL should be further studied given that it is widely adopted in many networking and computing applications.
Normal and anomalous densities in Bose-Einstein condensate with optical lattices
Creators: name: Bendacha, M.
name: Boudjemâa, Abdelaali
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We study the quantum phase transition from the superfluid to the Mott insulator state in two and three dimensional Bose-Einstein condensate (BEC) with optical lattices using Bose-Hubbard Hamiltonian within the Generalized Hatree-Fock-Bogoliubov (GHFB) approximation. The behavior of the depletion and the anomalous fraction has been investigated in the Mott insulator phase. We found that at T = 0, these quantities become significant in two and three dimensions. It is shown also that the dimensionality of the lattice enhances the anomalous density.
description: 10 pages, 5 figures, Can.J. Phys in press
$p$-adic Polylogarithms and $p$-adic Hecke $L$-functions for Totally Real Fields
Creators: name: Bannai, Kenichi
name: Hagihara, Kei
name: Yamada, Kazuki
name: Yamamoto, Shuji
Publisher: name: arXiv
Year: 2020
Subjects: subject: Number Theory (math.NT)
subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 11M35, 11R80 (Primary), 11R42, 14L15 (Secondary)

description: The purpose of this article is to newly define the $p$-adic polylogarithm as an equivariant class in the cohomology of a certain infinite disjoint union of algebraic tori associated to a totally real field. We will then express the special values of $p$-adic $L$-functions interpolating nonpositive values of Hecke $L$-functions of the totally real field in terms of special values of these $p$-adic polylogarithms.
description: 34 pages, Added more explanations to make the aticle more readable
Stochastic MPC with Distributionally Robust Chance Constraints
Creators: name: Mark, Christoph
name: Liu, Steven
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics

description: In this paper we discuss distributional robustness in the context of stochastic model predictive control (SMPC) for linear time-invariant systems. We derive a simple approximation of the MPC problem under an additive zero-mean i.i.d. noise with quadratic cost. Due to the lack of distributional information, chance constraints are enforced as distributionally robust (DR) chance constraints, which we opt to unify with the concept of probabilistic reachable sets (PRS). For Wasserstein ambiguity sets, we propose a simple convex optimization problem to compute the DR-PRS based on finitely many disturbance samples. The paper closes with a numerical example of a double integrator system, highlighting the reliability of the DR-PRS w.r.t. the Wasserstein set and performance of the resulting SMPC.
description: Extended version with proofs; accepted for presentation at the 21st IFAC World Congress 2020
Joins of 1-planar graphs
Creators: name: Czap, Július
name: Hudák, Dávid
name: Madaras, Tomáš
Publisher: name: arXiv
Year: 2014
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: A graph is called 1-planar if there exists its drawing in the plane such that each edge is crossed at most once. In this paper, we study 1-planar graph joins. We prove that the join $G+H$ is 1-planar if and only if the pair $[G,H]$ is subgraph-majorized (that is, both $G$ and $H$ are subgraphs of graphs of the major pair) by one of pairs $[C_3 \cup C_3,C_3], [C_4,C_4], [C_4,C_3], [K_{2,1,1},P_3]$ in the case when both factors of the graph join have at least three vertices. If one factor has at most two vertices, then we give several necessary/sufficient conditions for the bigger factor.
Superconducting Quantum Computing: A Review
Creators: name: Huang, He-Liang
name: Wu, Dachao
name: Fan, Daojin
name: Zhu, Xiaobo
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Over the last two decades, tremendous advances have been made for constructing large-scale quantum computers. In particular, the quantum processor architecture based on superconducting qubits has become the leading candidate for scalable quantum computing platform, and the milestone of demonstrating quantum supremacy was first achieved using 53 superconducting qubits in 2019. In this work, we provide a brief review on the experimental efforts towards building a large-scale superconducting quantum computer, including qubit design, quantum control, readout techniques, and the implementations of error correction and quantum algorithms. Besides the state of the art, we finally discuss future perspectives, and which we hope will motivate further research.
description: Updated version, Typos corrected, New references added, New discussions added
Domain specificity and data efficiency in typo tolerant spell checkers: the case of search in online marketplaces
Creators: name: Ubrangala, Dayananda
name: Sharma, Juhi
name: Kondapalli, Ravi Prasad
name: R, Kiran
name: Agarwala, Amit
name: Boué, Laurent
Publisher: name: arXiv
Year: 2023
Subjects: subject: Machine Learning (cs.LG)
subject: Artificial Intelligence (cs.AI)
subject: Computation and Language (cs.CL)
subject: Information Retrieval (cs.IR)
subject: FOS: Computer and information sciences

description: Typographical errors are a major source of frustration for visitors of online marketplaces. Because of the domain-specific nature of these marketplaces and the very short queries users tend to search for, traditional spell cheking solutions do not perform well in correcting typos. We present a data augmentation method to address the lack of annotated typo data and train a recurrent neural network to learn context-limited domain-specific embeddings. Those embeddings are deployed in a real-time inferencing API for the Microsoft AppSource marketplace to find the closest match between a misspelled user query and the available product names. Our data efficient solution shows that controlled high quality synthetic data may be a powerful tool especially considering the current climate of large language models which rely on prohibitively huge and often uncontrolled datasets.
Functional limit theorems for the fractional Ornstein-Uhlenbeck process
Creators: name: Gehringer, Johann
name: Li, Xue-Mei
Publisher: name: arXiv
Year: 2020
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 34F05, 60F05, 60F17, 60G18, 60G22, 60H05, 60H07, 60H10

description: We prove a functional limit theorem for vector-valued functionals of the fractional Ornstein-Uhlenbeck process, providing the foundation for the fluctuation theory of slow/fast systems driven by such a noise. Our main contribution is on the joint convergence to a limit with both Gaussian and non-Gaussian components. This is valid for any $L^2$ functions, whereas for functions with stronger integrability properties the convergence is shown to hold in the Hölder topology. As an application we prove a `rough creation' result, i.e. the weak convergence of a family of random smooth curves to a non-Markovian random process with rough sample paths. This includes the second order problem and the kinetic fractional Brownian motion model.
description: To appear in the Journal of Theoretical Probability. arXiv admin note: text overlap with arXiv:1911.12600
The needs of children on the autism spectrum and their families: Exploring household costs and factors impacting access to resources
Creators: name: Blackwell, Chloe
Publisher: name: Loughborough University
Year: 2022
Subjects: Other human society not elsewhere classified

description: The social security benefits system in the UK acknowledges that families raising children on the autism spectrum incur additional costs. However, more research is needed to understand the extent and nature of family-level costs. This study explores, from the perspective of families, what children on the autism spectrum need, and what implications these needs can have for family spending requirements. The study also relates families’ direct and indirect costs to their interactions with schools, formal support services and employment. The study drew upon semi-structured interviews and deliberative focus groups. Combined, the methods worked to explore the needs of children on the autism spectrum, and what implications these needs may have for family-level costs. Focus groups were built upon the consensual budget standards approach to ask parents what additional everyday goods and services children on the autism spectrum need, from a selection of categories. It was also the aim of the study to set these needs within the context of how families’ interactions with formal and informal support structures, and their employment experiences, influenced their financial experiences. To do this, a different set of parents, and some children on the autism spectrum, were interviewed. The findings from this thesis suggest that the additional resources required to meet the needs of children on the autism spectrum are higher than is indicated in previous studies. The use of the consensual budget-standards approach, alongside baseline data from a comparable study (Davis et al., 2020) demonstrated that costs can be identified which have otherwise been hidden. These additional costs are part of broader financial constraints and dilemmas experienced at a family level. For example, it is found that children on the autism spectrum and their families are not adequately supported by formal services, and these provision inadequacies generate additional costs for families. Adding further financial pressures, barriers impacting the employment of parents are identified, which not only include child- and household-specific factors, but also factors relating to employers, schools and children’s services.
Rupture cascades in a discrete element model of a porous sedimentary rock
Creators: name: Kun, F.
name: Varga, I.
name: Lennartz-Sassinek, S.
name: Main, I. G.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: We investigate the scaling properties of the sources of crackling noise in a fully-dynamic numerical model of sedimentary rocks subject to uniaxial compression. The model is initiated by filling a cylindrical container with randomly-sized spherical particles which are then connected by breakable beams. Loading at a constant strain rate the cohesive elements fail and the resulting stress transfer produces sudden bursts of correlated failures, directly analogous to the sources of acoustic emissions in real experiments. The source size, energy, and duration can all be quantified for an individual event, and the population analyzed for their scaling properties, including the distribution of waiting times between consecutive events. Despite the non-stationary loading, the results are all characterized by power law distributions over a broad range of scales in agreement with experiments. As failure is approached temporal correlation of events emerge accompanied by spatial clustering.
description: 5 pages, 4 figures
Mass Gap in U(1) Higgs-Yukawa model on a unit lattice
Creators: name: Goswami, Abhishek
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mathematical Physics (math-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences
subject: 81T08, 81T13, 81T25

description: A non perturbative proof of the mass generation of fermions via the Higgs mechanism is given. This is done by showing exponential decay of the two point fermionic correlation function in a weakly coupled U(1) Higgs-Yukawa theory on a unit lattice in $d=4$. This decay implies that the Higgs boson, the photon and the fermion all have a non zero physical mass and the theory is said to have a mass gap.
description: Remarks addressing fermion doubling and chiral invariance added in the introduction. References updated. Typos corrected
Helping students apply superposition principle in problems involving spherical, cylindrical and planar charge distributions
Creators: name: Li, Jing
name: Maries, Alexandru
name: Singh, Chandralekha
Publisher: name: arXiv
Year: 2023
Subjects: subject: Physics Education (physics.ed-ph)
subject: FOS: Physical sciences

description: We describe student difficulties in applying the superposition principle in combination with Gauss's law. We addressed these difficulties by developing a tutorial that uses guided inquiry. Students who used this tutorial following lecture-based instruction performed significantly better on these topics than those who did not. Instructors can assign the tutorial as classwork or homework.
description: 6 pages, 1 figure for article; 10 pages, 8 figures for supplement
title: Ernst Keller-Graf, 1912 - 1968
title: Ernst Keller-Graf 1912-1968
titleType: AlternativeTitle
title: Gedenkfeier anlässlich der Bestattung von Dr. iur. Ernst Keller-Graf
titleType: Subtitle
title: Donnerstag, den 6. Juni 1968 im Krematorium Nordheim in Zürich
titleType: Subtitle
Creators: name: Hess, Walter
name: Decurtins, Carl
Publisher: name: [Steno-Verlag]
Year: 1968
Subjects: subject: 920 Biografien, Genealogie, Insignien
subject: Nachruf
subject: Keller-Graf, Ernst
subject: Zürich
subject: Kreuzkirche Zürich

description: Inhalt: Abdankungsansprache von Walter Hess, Pfarrer an der Kreuzkirche Zürich ; Ansprache von Dr. iur. Carl Decurtins I. Gerichtsschreiber am Bezirksgericht Zürich
The Quest for the Nature of the Dark Matter: The Need of a New Paradigm
Creators: name: Nesti, Fabrizio
name: Salucci, Paolo
name: Turini, Nicola
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: The phenomenon of the Dark matter baffles the researchers: the underlying dark particle has escaped so far the detection and its astrophysical role appears complex and entangled with that of the standard luminous particles. We propose that, in order to act efficiently, alongside with abandoning the current $ΛCDM$ scenario, we need also to shift the Paradigm from which it emerged.
description: 15 pages. 9 figures
Exploring chaos in Dicke Model using ground state fidelity and Loschmidt echo
Creators: name: Bhattacharya, Utso
name: Dasgupta, Sayak
name: Dutta, Amit
Publisher: name: arXiv
Year: 2014
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the quantum critical behaviour of the Dicke Hamiltonian, with finite number of atoms and explore the signature of quantum chaos using measures like the ground state fidelity and the Loschmidt echo. We show that both these quantities clearly point to the chaotic nature of the system in the super-radiant phase.
description: 7 pages, 8 figures
Fatigue Impact of Mechanical and Thermal Residual Stresses on the Trailing Edge Bond Line of Wind Turbine Blades
Creators: name: Rosemeier, Malo
name: Krimmer, Alexander
name: Bardenhagen, Andreas
name: Antoniou, Alexandros
Publisher: name: Zenodo
Year: 2019
Subjects: Adhesive joint
Multi-axial stress
Three-dimensional stress
Shrinkage

description: Tunneling cracks are observed in the adhesive of the trailing edge bond line of wind turbine rotor blades subjected to high-cycle fatigue. To identify the root causes of these cracks, their initiation was calculated using a stress-based approach. The mechanical stresses caused by aerodynamic and gravity loads which arise when operating in the field were considered on the one hand, and the residual stresses caused by thermal material shrinkage during manufacture on the other. This work investigates the impact of each mechanical stress and thermal residual stress component on the fatigue stress exposure along the blade span. It was found that the thermal residual stresses make a significant contribution to the bond line fatigue. Besides the dominating longitudinal stress, peel and shear stress also contribute to the fatigue.
description: We acknowledge the support within the Future Concept Fatigue Strength of Rotor Blades project granted by the German Federal Ministry for Economic Affairs and Energy (BMWi) (0325939) and the Senator for Health, Environment and Consumer Protection of the Free Hanseatic City of Bremen within the ERDF programme Bremen 2014-2020 (201/PF_IWES_Zukunftskonzept_Betriebsfestigkeit_Rotorblätter_Phase I). Moreover, we would like to thank SSP Technology A/S for providing the wind turbine blade model for this research.
Deconfinement phase transition in the Hamiltonian approach to Yang-Mills theory in Coulomb gauge
Creators: name: Reinhardt, Hugo
name: Campagnari, Davide R.
name: Heffner, Jan
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Recent results obtained for the deconfinement phase transition within the Hamiltonian approach to Yang-Mills theory are reviewed. Assuming a quasiparticle picture for the grand canonical gluon ensemble the thermal equilibrium state is found by minimizing the free energy with respect to the quasi-gluon energy. The deconfinement phase transition is accompanied by a drastic change of the infrared exponents of the ghost and gluon propagators. Above the phase transition the ghost form factor remains infrared divergent but its infrared exponent is approximately halved. The gluon energy being infrared divergent in the confined phase becomes infrared finite in the deconfined phase. Furthermore, the effective potential of the order parameter for confinement is calculated for SU$(N)$ Yang-Mills theory in the Hamiltonian approach by compactifying one spatial dimension and using a background gauge fixing. In the simplest truncation, neglecting the ghost and using the ultraviolet form of the gluon energy, we recover the Weiss potential. From the full non-perturbative potential (with the ghost included) we extract a critical temperature of the deconfinement phase transition of $269$ MeV for the gauge group SU$(2)$ and $283$ MeV for SU$(3)$.
description: 10 pages, 17 figures, talk given by Hugo Reinhardt at "2nd International Conference on New Frontiers in Physics" in Kolymbari, Crete