cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Synergy-Based Human Grasp Representations and Semi-Autonomous Control of Prosthetic Hands
Creators: name: Starke, Julia
Publisher: name: Karlsruher Institut für Technologie (KIT)
Year: 2023
Subjects: hand prostheses
humanoid robotic hands
grasping
learning from demonstration

description: Das sichere und stabile Greifen mit humanoiden Roboterhänden stellt eine große Herausforderung dar. Diese Dissertation befasst sich daher mit der Ableitung von Greifstrategien für Roboterhände aus der Beobachtung menschlichen Greifens. Dabei liegt der Fokus auf der Betrachtung des gesamten Greifvorgangs. Dieser umfasst zum einen die Hand- und Fingertrajektorien während des Greifprozesses und zum anderen die Kontaktpunkte sowie den Kraftverlauf zwischen Hand und Objekt vom ersten Kontakt bis zum statisch stabilen Griff. Es werden nichtlineare posturale Synergien und Kraftsynergien menschlicher Griffe vorgestellt, die die Generierung menschenähnlicher Griffposen und Griffkräfte erlauben. Weiterhin werden Synergieprimitive als adaptierbare Repräsentation menschlicher Greifbewegungen entwickelt. Die beschriebenen, vom Menschen gelernten Greifstrategien werden für die Steuerung robotischer Prothesenhände angewendet. Im Rahmen einer semi-autonomen Steuerung werden menschenähnliche Greifbewegungen situationsgerecht vorgeschlagen und vom Nutzenden der Prothese überwacht.
Expectation Propagation for Nonlinear Inverse Problems -- with an Application to Electrical Impedance Tomography
Creators: name: Gehre, Matthias
name: Jin, Bangti
Publisher: name: arXiv
Year: 2013
Subjects: subject: Numerical Analysis (math.NA)
subject: Statistics Theory (math.ST)
subject: FOS: Mathematics

description: In this paper, we study a fast approximate inference method based on expectation propagation for exploring the posterior probability distribution arising from the Bayesian formulation of nonlinear inverse problems. It is capable of efficiently delivering reliable estimates of the posterior mean and covariance, thereby providing an inverse solution together with quantified uncertainties. Some theoretical properties of the iterative algorithm are discussed, and the efficient implementation for an important class of problems of projection type is described. The method is illustrated with one typical nonlinear inverse problem, electrical impedance tomography with complete electrode model, under sparsity constraints. Numerical results for real experimental data are presented, and compared with that by Markov chain Monte Carlo. The results indicate that the method is accurate and computationally very efficient.
description: Journal of Computational Physics, to appear
Consideration on the relationship of theoretical ultraviolet cut-off energy with experimental data
Creators: name: Fukushima, Kimichika
name: Sato, Hikaru
Publisher: name: arXiv
Year: 2018
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: We formulated a field theory in space-time elements, which are obtained by dividing the space-time continuum into arbitrary-shaped space-time elements, such as hyper-octahedra (orthoplexes), which are aligned locally periodically, without long-range order. Each field is expressed in terms of scalar expansion functions with rotationally covariant coefficients. The cosmological constant was related to the cut-off energy of the quadratic Higgs self-energy. From the literature, examinations find an experimental break in the cosmic ray energy spectrum called 'knee' at about 3 [PeV], which agrees with this theoretical ultraviolet cut-off energy. Moreover, the expansion functions are updated to plane waves using the Lorentz/Poincaré covariant/invariant inner product of vectors with each four-momentum within the cut-off energy. Due to the long-range disordered alignment of space-time elements, this study newly introduces an effective field, which is not in the standard model and lies within the Planck energy. Particles are then rarely excited to the energy region between the cut-off energy and the Planck energy via extremely weak interaction solely with the effective field. The theoretical ultraviolet cut-off energy is consistent with the experimental phenomena such as the stability of our Universe, inflation in the early Universe and no detection of neutrinos above PeV-order energy.
description: v1: 7 pages; v2: Sec. 3 revised; v3: Secs. 1 and 3 revised; v4: Secs. 3 and 4 revised; v5: Abstract slightly modified; v6: Sec. 3 modified; v7: language editing performed; v8: Secs. 2-3 revised; revision summary added to Sec. 1; v9: Secs. 2-3 and Appendix modified; related parts modified; v10: Secs. 2 and 3 modified; related parts modified; v11: last part of Sec. 2 modified; typo corrected
Trading Strategies Generated Pathwise by Functions of Market Weights
Creators: name: Karatzas, Ioannis
name: Kim, Donghan
Publisher: name: arXiv
Year: 2018
Subjects: subject: Mathematical Finance (q-fin.MF)
subject: Probability (math.PR)
subject: Portfolio Management (q-fin.PM)
subject: FOS: Economics and business
subject: FOS: Mathematics

description: Almost twenty years ago, E.R. Fernholz introduced portfolio generating functions which can be used to construct a variety of portfolios, solely in the terms of the individual companies' market weights. I. Karatzas and J. Ruf recently developed another methodology for the functional construction of portfolios, which leads to very simple conditions for strong relative arbitrage with respect to the market. In this paper, both of these notions of functional portfolio generation are generalized in a pathwise, probability-free setting; portfolio generating functions are substituted by path-dependent functionals, which involve the current market weights, as well as additional bounded-variation functions of past and present market weights. This generalization leads to a wider class of functionally-generated portfolios than was heretofore possible, and yields improved conditions for outperforming the market portfolio over suitable time-horizons.
description: 45 pages, 3 figures
A second-order spin-flop transition in collinear two-sublattice antiferromagnets
Creators: name: Li, Haifeng
Publisher: name: arXiv
Year: 2014
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences
subject: 02.10.-v, 64.10.+h, 75.10.Hk, 75.30.-m

description: Identifying the nature of a spin-flop (SFO) transition, first- or second-order (FO or SO), remains a major challenge in condensed-matter physics due to the technically undistinguishable effect of misalignment between applied-field direction and the relevant antiferromagnetic (AFM) easy axis. A classical SFO transition is believed to be of FO in character. Here a mean-field theoretical calculation endowed with AFM exchange interaction (\emph{J}), easy axis anisotropy ($γ$), uniaxial single-ion exchange anisotropy (\emph{D}), and Zeeman coupling to a magnetic field parallel to the easy axis unambiguously reveals that a SO SFO transition indeed exists by virtue of its relatively lower free energy. Their equilibrium phase conditions are found to be: $D \geq 0$ (FO); $-\frac{1}{2} γ< D < 0$ (SO). Compared numerically to the associated AFM and spin-flip phases, the deduced SO SFO transition results from a negative single-ion anisotropy which is restricted to a certain range by the anisotropic exchange interaction
description: 5 Pages, 4 Figures
Globally synchronized oscillations in complex cyclic games
Creators: name: Rulquin, Charlotte
name: Arenzon, Jeferson J.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: The Rock-Paper-Scissors (RPS) game and its generalizations with ${\cal S}>3$ species are well studied models for cyclically interacting populations. Four is, however, the minimum number of species that, by allowing other interactions beyond the single, cyclic loop, breaks both the full intransitivity of the food graph and the one predator, one prey symmetry. Lütz {\it et al} (J. Theor. Biol. {\bf 317} (2013) 286) have shown the existence, on a square lattice, of two distinct phases, with either four or three coexisting species. In both phases, each agent is eventually replaced by one of its predators but these strategy oscillations remain localized as long as the interactions are short ranged. Distant regions may be either out of phase or cycling through different food web subloops (if any). Here we show that upon replacing a minimum fraction $Q_c$ of the short range interactions by long range ones, there is a Hopf bifurcation and global oscillations become stable. Surprisingly, to build such long distance, global synchronization, the four species coexistence phase requires less long range interactions than the three species phase, while one would naively expect the contrary. Moreover, deviations from highly homogeneous conditions ($χ=0$ or 1) increase $Q_c$ and the more heterogeneous is the food web, the harder the synchronization is. By further increasing $Q$, while the three species phase remains stable, the four species one has a transition to an absorbing, single species state. The existence of a phase with global oscillations for ${\cal S}>3$, when the interaction graph has multiple subloops and several possible local cycles, lead to the conjecture that global oscillations are a general characteristic, even for large, realistic food webs.
title: Stakeholder’s Assessment of the Need for Sexual Health Education among Adolescents in Saudi Arabia: An Exploratory Study
Creators: name: Horanieh, NB
Publisher: name: London School of Hygiene & Tropical Medicine
Year: 2019

description: Sex education has been shown to improve the sexual health outcomes of adolescents, yet many countries still lack the provision of formal sex education programmes. In Saudi Arabia, although having a large adolescent population, no formal sexual education programme exists in the country. Some information is provided within the national curricula, mainly through the subjects of Science and Islamic Jurisprudence. The aim of this thesis is to assess the need for sex education for adolescents in Saudi Arabia, and possible provision for such a programme, in addition to the obstacles and facilitators for implementation from the perspective of stakeholders. A qualitative approach was applied using in-depth semi-structured interviews with 28 stakeholders from four different stakeholder groups: policy-making agencies and officials; social and healthcare providers; teachers and other school staff; and religious scholars. The findings of this research revealed a unanimous agreement on the need for sex education. Opinions varied regarding adopting a science-based approach vs a religion based one. Both approaches were drawn on as non-conflicting sources to guide a feasible, appropriate programme in the country. Opinions varied on the required areas to cover including harm reduction strategies. Various public health terminology were conceptualized differently than their international definitions. Harm was perceived as not limited to physical harm but encompassed spiritual and social harms as well. Ambiguity was not only adopted during expressing opinions but also suggested as a strategy for packaging otherwise sensitive information which differs than international guidelines that recommend clear messaging tactics in these programmes. The need for sex education was not presented as a preventative measure exclusively against physical disease, rather it was needed to ensure happy marital relationships and to preserve the family unit. Obstacles and facilitators for implementation were mostly related to the local Saudi context, specifically the structural factors related to the 10 education and public health infrastructure, as well as the fast pace social and political changes occurring in the country. Findings form this thesis can be of use to policymakers in Saudi Arabia as well as officials at the MoE and MoH, not just for the formulation for sex education in the country but also for identifying obstacles for implementation. Findings can also be of use in neighbouring countries with similar political systems. Results can also help international organizations to formulating sex education guidelines that are culturally sensitive to Muslim communities around the world.
Quantum Annealing search of Ising spin glass ground state(s) with tunable transverse & longitudinal fields
Creators: name: Rajak, A
name: Chakrabarti, B K
Publisher: name: arXiv
Year: 2014
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Here we first discuss briefly the quantum annealing technique. We then study the quantum annealing of Sherrington-Kirkpatrick spin glass model with the tuning of both transverse and longitudinal fields. Both the fields are time-dependent and vanish adiabatically at the same time, starting from high values. We solve, for rather small systems, the time-dependent Schrodinger equation of the total Hamiltonian by employing a numerical technique. At the end of annealing we obtain the final state having high overlap with the exact ground state(s) of classical spin glass system (obtained independently).
description: 6 pages, 2 figures
Square functions and uniform rectifiability
Creators: name: Chousionis, Vasilis
name: Garnett, John
name: Le, Triet
name: Tolsa, Xavier
Publisher: name: arXiv
Year: 2014
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics

description: In this paper it is shown that an Ahlfors-David $n$-dimensional measure $μ$ on $\mathbb{R}^d$ is uniformly $n$-rectifiable if and only if for any ball $B(x_0,R)$ centered at $\operatorname{supp}(μ)$, $$ \int_0^R \int_{x\in B(x_0,R)} \left|\frac{μ(B(x,r))}{r^n} - \frac{μ(B(x,2r))}{(2r)^n} \right|^2\,dμ(x)\,\frac{dr}r \leq c\, R^n.$$ Other characterizations of uniform $n$-rectifiability in terms of smoother square functions are also obtained.
Generating an equidistributed net on a unit n-sphere using random rotations
Creators: name: Chakraborty, Somnath
name: Narayanan, Hariharan
Publisher: name: arXiv
Year: 2018
Subjects: subject: Probability (math.PR)
subject: Computational Geometry (cs.CG)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: We develop a randomized algorithm (that succeeds with high probability) for generating an $ε$-net in a sphere of dimension n. The basic scheme is to pick $O(n \ln(1/n) + \ln(1/δ))$ random rotations and take all possible words of length $O(n \ln(1/ε))$ in the same alphabet and act them on a fixed point. We show this set of points is equidistributed at a scale of $ε$. Our main application is to approximate integration of Lipschitz functions over an n-sphere.
High proper motion X-ray binaries from the Yale Southern Proper Motion Survey
Creators: name: Maccarone, Thomas J.
name: Girard, Terrence M.
name: Casetti-Dinescu, Dana I.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We discuss the results of cross-correlating catalogs of bright X-ray binaries with the Yale Southern Proper Motion catalog (version 4.0). Several objects already known to have large proper motions from Hipparcos are recovered. Two additional objects are found which show substantial proper motions, both of which are unusual in their X-ray properties. One is IGR J17544-2619, one of the supergiant fast X-ray transients. Assuming the quoted distances in the literature for this source of about 3 kpc are correct, this system has a peculiar velocity of about 275 km/sec -- greater than the velocity of a Keplerian orbit at its location of the Galaxy, and in line with the expectations formed from suggestions that the supergiant fast X-ray transients should be highly eccentric. We discuss the possibility that these objects may help explain the existence of short gamma-ray bursts outside the central regions of galaxies. The other is the source 2A~1822-371, which is a member of the small class of objects which are low mass X-ray binaries and long (i.e. $>$ 100 millisecond) X-ray pulsars. This system also shows both an anomalously high X-ray luminosity and a large orbital period derivative for a system with its orbital period, and some possible indications of an eccentric orbit. A coherent picture can be developed by adding in the proper motion information in which this system formed in the Perseus spiral arm of the Galaxy about 3 Myr ago, and retains a slightly eccentric orbit which leads to enhanced mass transfer.
description: 10 pages, 1 figure, 2 tables, accepted to MNRAS
California State Historic Preservation Office concurrence letter for CA-SBA-785H, Olivera Adobe Rance House Ruins
Creators: name: California State Historic Preservation Office
Year: 1985
Subjects: subject: CA-SBA-785/H
valueUri: https://core.tdar.org/browse/site-name/100828/ca-sba-785h

description: This document is a letter from the California State Historic Preservation Office (SHPO) providing concurrence supporting a determination of National Register eligible for the archaeological site CA-SBA-785H, the Olivera Adobe Ranch House Ruins. The SHPO recognizes the significance of the adobe structure and recommends contacting the National Park Service regarding the proper preservation of this resource.
Derived Witt-Dévissage Formalism
Creators: name: Mandal, Satya
Publisher: name: arXiv
Year: 2014
Subjects: subject: K-Theory and Homology (math.KT)
subject: FOS: Mathematics
subject: 19G12, 13C10, 11E12, 14K99

description: In this article we establish some formalism of Derived Witt-Dévissage theory for resolving subcategories of abelian categories. Results directly apply to noetherian schemes.
description: 26 pages
Salt polygons and porous media convection
Creators: name: Lasser, Jana
name: Nield, Joanna M.
name: Ernst, Marcel
name: Karius, Volker
name: Wiggs, Giles F. S.
name: Threadgold, Matthew R.
name: Beaume, Cédric
name: Goehring, Lucas
Publisher: name: arXiv
Year: 2019
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: From fairy circles to patterned ground and columnar joints, natural patterns spontaneously appear in many complex geophysical settings. Here, we investigate the origins of polygonally patterned crusts of salt playa and salt pans. These beautifully regular features, approximately a meter in diameter, are found worldwide and are fundamentally important to the transport of salt and dust in arid regions. We show that they are consistent with the surface expression of buoyancy-driven convection in the porous soil beneath a salt crust. By combining quantitative results from direct field observations, analogue experiments and numerical simulations, we further determine the conditions under which salt polygons should form, as well as how their characteristic size emerges.
description: 22 pages, 12 figures
Pressure-induced superconductivity in EuFe2As2 without a quantum critical point: magnetotransport and upper critical field measurements under high pressure
Creators: name: Kurita, Nobuyuki
name: Kimata, Motoi
name: Kodama, Kota
name: Harada, Atsushi
name: Tomita, Megumi
name: Suzuki, Hiroyuki S.
name: Matsumoto, Takehiko
name: Murata, Keizo
name: Uji, Shinya
name: Terashima, Taichi
Publisher: name: arXiv
Year: 2013
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Resistivity and Hall effect measurements of EuFe$_2$As$_2$ up to 3.2\,GPa indicate no divergence of quasiparticle effective mass at the pressure $P_\mathrm{c}$ where the magnetic and structural transition disappears. This is corroborated by analysis of the temperature ($T$) dependence of the upper critical field. $T$-linear resistivity is observed at pressures slightly above $P_\mathrm{c}$. The scattering rates for both electrons and holes are shown to be approximately $T$-linear. When a field is applied, a $T^2$ dependence is recovered, indicating that the origin of the $T$-linear dependence is spin fluctuations.
description: 7 pages, 8 figures, to appear in Phys. Rev. B
Linear and Nonlinear Optical Properties of Mn doped Benzimidazole Thin Films
Creators: name: Praveen, P. A.
name: Babu, R. Ramesh
name: Prabhakaran, SP.
name: Ramamurthi, K.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: In the present work, the Mn doped benzimidazole (BMZ) thin films were prepared by simple chemical bath deposition technique. The material was directly deposited as thin film on glass substrates and the metal concentration in the solution was varied in weight percentage in order to investigate the dopant effect on the properties of thin films. Similarly, the Mn doped BMZ films were deposited in different solution temperature to study the effect of deposition temperature on the properties of thin films. The PXRD and FT-IR spectroscopy are used to study the structural and the presence of functional groups in the BMZ medium. Depending upon the solution temperature, thickness of the films varying from 0.6 to 1.2 μm and the optical transparency of the samples increases with the increasing temperature up to 50 °C. Second Harmonic Generation (SHG) efficiency of the films is measured for all the films. Third order nonlinear optical properties of the films were analyzed using Z-scan technique. The experimental results show that Mn doped BMZ films exhibits saturation absorption and negative nonlinearity.
description: This has been presented in DAE 58th Solid State Symposium held at Thapar University, Patiala, Punjab, India. Will be published in AIP conference proceedings soon
Constraints on the space density of intermediate polars from the Swift-BAT survey
Creators: name: Pretorius, Magaretha L.
name: Mukai, Koji
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We construct a complete, hard X-ray flux-limited sample of intermediate polars (IPs) from the Swift-BAT 70-month survey, by imposing selection cuts in flux and Galactic latitude ($F_X > 2.5 \times 10^{-11}\,\mathrm{erg\,cm^{-2}s^{-1}}$ at 14--195~keV, and $|b|>5^\circ$). We then use it to estimate the space density ($ρ$) of IPs. Assuming that this sample of 15 long-period systems is representative of the intrinsic IP population, the space density of long-period IPs is $1^{+1}_{-0.5} \times 10^{-7}\,\mathrm{pc^{-3}}$. The Swift-BAT data also allow us to place upper limits on the size of a hypothetical population of faint IPs that is not included in the flux-limited sample. While most IPs detected by BAT have 14--195~keV luminosities of $\sim 10^{33} {\rm erg s^{-1}}$, there is evidence of a fainter population at $L_X \sim 10^{31} {\rm erg s^{-1}}$. We find that a population of IPs with this luminosity may have a space density as large as $5\times 10^{-6}\,\mathrm{pc^{-3}}$. Furthermore, these low-luminosity IPs, despite appearing rare in observed samples, are probably at least as intrinsically common as the brighter systems that are better represented in the known IP sample.
description: 7 pages, 4 figures, accepted for publication in MNRAS
Meta analysis of energy citizenship detailed case studies (D3.5 Part 1)
Creators: name: Vadovics, Edina
name: Szőllőssy, Anita
Publisher: name: Zenodo
Year: 2024

description: This deliverable (D3.5) was prepared in the EnergyPROSPECTS European research project, studying energy citizenship.

D3.5 is made up of two parts. Part 1, the current document, is the meta analysis of the 40 in-depth cases of energy citizenship from the point of view of transition towards a more just, inclusive, democratic and sustainable energy system. Part 2 is the depository of the 40 in-depth cases, introducing and providing an analysis of the cases in the form of case summary reports.
ROMANet: Fine-Grained Reuse-Driven Off-Chip Memory Access Management and Data Organization for Deep Neural Network Accelerators
Creators: name: Putra, Rachmad Vidya Wicaksana
name: Hanif, Muhammad Abdullah
name: Shafique, Muhammad
Publisher: name: arXiv
Year: 2019
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: Hardware Architecture (cs.AR)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Enabling high energy efficiency is crucial for embedded implementations of deep learning. Several studies have shown that the DRAM-based off-chip memory accesses are one of the most energy-consuming operations in deep neural network (DNN) accelerators, and thereby limit the designs from achieving efficiency gains at the full potential. DRAM access energy varies depending upon the number of accesses required as well as the energy consumed per-access. Therefore, searching for a solution towards the minimum DRAM access energy is an important optimization problem. Towards this, we propose the ROMANet methodology that aims at reducing the number of memory accesses, by searching for the appropriate data partitioning and scheduling for each layer of a network using a design space exploration, based on the knowledge of the available on-chip memory and the data reuse factors. Moreover, ROMANet also targets decreasing the number of DRAM row buffer conflicts and misses, by exploiting the DRAM multi-bank burst feature to improve the energy-per-access. Besides providing the energy benefits, our proposed DRAM data mapping also results in an increased effective DRAM throughput, which is useful for latency-constraint scenarios. Our experimental results show that the ROMANet saves DRAM access energy by 12% for the AlexNet, by 36% for the VGG-16, and by 46% for the MobileNet, while also improving the DRAM throughput by 10%, as compared to the state-of-the-art.
description: Submitted to the IEEE-TVLSI journal, 14 pages, 26 figures
Automatic Routing of Goldstone Diagrams using Genetic Algorithms
Creators: name: Herrmann, Nils
name: Hanrath, Michael
Publisher: name: arXiv
Year: 2019
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Neural and Evolutionary Computing (cs.NE)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: This paper presents an algorithm for an automatic transformation (=routing) of time ordered topologies of Goldstone diagrams (i.e. Wick contractions) into graphical representations of these topologies. Since there is no hard criterion for an optimal routing, the proposed algorithm minimizes an empirically chosen cost function over a set of parameters. Some of the latter are naturally of discrete type (e.g. interchange of particle/hole lines due to antisymmetry) while others (e.g. x,y-position of nodes) are naturally continuous. In order to arrive at a manageable optimization problem the position space is artificially discretized. In terms of the (i) cost function, (ii) the discrete vertex placement, (iii) the interchange of particle/hole lines the routing problem is now well defined and fully discrete. However, it shows an exponential complexity with the number of vertices suggesting to apply a genetic algorithm for its solution. The presented algorithm is capable of routing non trivial (several loops and crossings) Goldstone diagrams. The resulting diagrams are qualitatively fully equivalent to manually routed ones. The proposed algorithm is successfully applied to several Coupled Cluster approaches and a perturbative (fixpoint iterative) CCSD expansion with repeated diagram substitution.
description: 15 pages, 4 tables, 16 figures
Control of catalytic efficiency by a co-evolving network of catalytic and non-catalytic residues
Creators: name: McMurrough, Thomas A.
name: Dickson, Russel J.
name: Thibert, Stephanie M. F.
name: Gloor, Gregory B.
name: Edgell, David R.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Biomolecules (q-bio.BM)
subject: FOS: Biological sciences

description: The active sites of enzymes consist of residues necessary for catalysis, and structurally important non-catalytic residues that together maintain the architecture and function of the active site. Examples of evolutionary interactions between active site residue have been difficult to define and experimentally validate due to a general intolerance to substitution. Here, using computational methods to predict co-evolving residues, we identify a network of positions consisting of two catalytic metal-binding residues and two adjacent non- catalytic residues in LAGLIDADG family homing endonucleases (LHEs). Distinct combinations of residues in the network map to clades of LHE sub-families, with a striking distribution of the metal-binding Asp (D) and Glu (E) residues. Mutation of these four positions in two LHEs, I-LtrI and I-OnuI, indicate that combinations of residues tolerated are specific to each enzyme. Kinetic analyses under single-turnover conditions indicated a substantial defect in either the catalytic rate (kcat*) or the Michaelis constant (KM*) for I- LtrI variants with networks predicted to be suboptimal. Enzymatic activity could be restored to near wild-type levels with a single compensatory mutation that recreated a network of optimally predicted residues. Our results demonstrate that LHE activity is constrained by an evolutionary barrier of residues with strong context-dependent effects. Creation of optimal co-evolving active site networks is therefore an important consideration in engineering of LHEs and other enzymes.
Embodiment y gesto en la interactividad basada en la activación sensoriomotora en el inglés como lengua franca (ELF)
Creators: name: Valderrama Cárdenas, Juan Carlos
Publisher: name: Zenodo
Year: 2022
Subjects: ELF
Gesture
Embodied Cognition
Cognitive Event Analysis

description: Movemos espontáneamente las manos al hablar, sin embargo, tenemos una comprensión parcial de los mecanismos asociados. Por ello, el propósito de la presente propuesta, es describir cómo el gesto se involucra con la alineación de información espacio-motora en interacciones diádicas cara-a-cara, en situaciones estructuradas y mediadas por el inglés como lengua franca. La propuesta es basada en la perspectiva de la cognición corporeizada en donde la comunicación tiene lugar con base en la percepción y la acción.
Psycholinguistic Aspects of Sign Language: Neural Processing, Bilingualism, and Technological Implications
Creators: name: Alexander, Yoshua
Publisher: name: Zenodo
Year: 2024

description: This paper explores the psycholinguistic aspects of sign language, focusing on neural processing, bilingualism among Deaf individuals, and the implications for technology development. Sign language engages both the left hemisphere regions associated with language processing and also the right hemisphere areas involved in spatial and visual processing; this presents a unique dual hemispheric activation. This phenomenon challenges the traditional language models based on spoken language and really highlights the brain's adaptability. Additionally, Deaf individuals often navigate bilingualism, managing both a visual-spatial sign language and an auditory-vocal spoken or written language. This bilingual experience by many Deaf individuals enhances cognitive functions such as executive control and multitasking abilities. Understanding these psycholinguistic factors is crucial for developing effective sign language translation technologies that cater to the unique linguistic and cognitive needs of the Deaf community.
Modulated equations of Hamiltonian PDEs and dispersive shocks
Creators: name: Benzoni-Gavage, Sylvie
name: Mietka, Colin
name: Rodrigues, L. Miguel
Publisher: name: arXiv
Year: 2019
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35B10, 35B35, 35Q35, 35Q51, 35Q53, 37K05, 37K45

description: Motivated by the ongoing study of dispersive shock waves in non integrable systems, we propose and analyze a set of wave parameters for periodic waves of a large class of Hamiltonian partial differential systems -- including the generalized Korteweg de Vries equations and the Euler-Korteweg systems -- that are well-behaved in both the small amplitude and small wavelength limits. We use this parametrization to determine fine asymptotic properties of the associated modulation systems, including detailed descriptions of eigenmodes. As a consequence, in the solitary wave limit we prove that modulational instability is decided by the sign of the second derivative -- with respect to speed, fixing the endstate -- of the Boussinesq moment of instability; and, in the harmonic limit, we identify an explicit modulational instability index, of Benjamin--Feir type.
description: 65 pages
Classifying compact 4-manifolds via generalized regular genus and G-degree
Creators: name: Casali, M. R.
name: Cristofori, P.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 57Q15 - 57N13 - 57M15 - 57Q25

description: (d+1)-colored graphs, i.e. edge-colored graphs that are (d+1)-regular, have already been proved to be a useful representation tool for compact PL d-manifolds, thus extending the theory (known as crystallization theory) originally developed for the closed case. In this context, combinatorially defined PL invariants play a relevant role. The present paper focuses in particular on generalized regular genus and G-degree: the first one extending to higher dimension the classical notion of Heegaard genus for 3-manifolds, the second one arising, within theoretical physics, from the theory of random tensors as an approach to quantum gravity in dimension greater than two. We establish several general results concerning the two invariants, in relation with invariants of the boundary and with the rank of the fundamental group, as well as their behaviour with respect to connected sums. We also compute both generalized regular genus and G-degree for interesting classes of compact d-manifolds, such as handlebodies, products of closed manifolds by the interval and D^2-bundles over S^2. The main results of the paper concern dimension 4, where we obtain the classification of all compact PL manifolds with generalized regular genus at most one, and of all compact PL manifolds with G-degree at most 18; moreover, in case of empty or connected boundary, the classifications are extended to generalized regular genus two and to G-degree 24.
description: 29 pages, 6 figures; changes according to the referees' suggestions
QoS-aware energy-efficient workload routing and server speed control policy in data centers: a robust queueing theoretic approach
Creators: name: Baik, Seung Min
name: Ko, Young Myoung
Publisher: name: arXiv
Year: 2019
Subjects: subject: Performance (cs.PF)
subject: Optimization and Control (math.OC)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: Operating cloud service infrastructures requires high energy efficiency while ensuring a satisfactory service level. Motivated by data centers, we consider a workload routing and server speed control policy applicable to the system operating under fluctuating demands. Dynamic control algorithms are generally more energy-efficient than static ones. However, they often require frequent information exchanges between routers and servers, making the data centers' management hesitate to deploy these algorithms. This study presents a static routing and server speed control policy that could achieve energy efficiency similar to a dynamic algorithm and eliminate the necessity of frequent communication among resources. We take a robust queueing theoretic approach to response time constraints for the quality of service (QoS) conditions. Each server is modeled as a G/G/1 processor sharing queue, and the concept of uncertainty sets defines the domain of stochastic primitives. We derive an approximative upper bound of sojourn times from uncertainty sets and develop an approximative sojourn time quantile estimation method for QoS. Numerical experiments confirm the proposed static policy offers competitive solutions compared with the dynamic algorithm.
DRMap: A Generic DRAM Data Mapping Policy for Energy-Efficient Processing of Convolutional Neural Networks
Creators: name: Putra, Rachmad Vidya Wicaksana
name: Hanif, Muhammad Abdullah
name: Shafique, Muhammad
Publisher: name: arXiv
Year: 2020
Subjects: subject: Hardware Architecture (cs.AR)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Many convolutional neural network (CNN) accelerators face performance- and energy-efficiency challenges which are crucial for embedded implementations, due to high DRAM access latency and energy. Recently, some DRAM architectures have been proposed to exploit subarray-level parallelism for decreasing the access latency. Towards this, we present a design space exploration methodology to study the latency and energy of different mapping policies on different DRAM architectures, and identify the pareto-optimal design choices. The results show that the energy-efficient DRAM accesses can be achieved by a mapping policy that orderly prioritizes to maximize the row buffer hits, bank- and subarray-level parallelism.
description: To appear at the 57th Design Automation Conference (DAC), July 2020, San Francisco, CA, USA
Direct observation of the transition from indirect to direct bandgap in atomically thin epitaxial MoSe2
Creators: name: Zhang, Yi
name: Chang, Tay-Rong
name: Zhou, Bo
name: Cui, Yong-Tao
name: Yan, Hao
name: Liu, Zhongkai
name: Schmitt, Felix
name: Lee, James
name: Moore, Rob
name: Chen, Yulin
name: Lin, Hsin
name: Jeng, Horng-Tay
name: Mo, Sung-Kwan
name: Hussain, Zahid
name: Bansil, Arun
name: Shen, Zhi-Xun
Publisher: name: arXiv
Year: 2014
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Quantum systems in confined geometries are host to novel physical phenomena. Examples include quantum Hall systems in semiconductors and Dirac electrons in graphene. Interest in such systems has also been intensified by the recent discovery of a large enhancement in photoluminescence quantum efficiency and a potential route to valleytronics in atomically thin layers of transition metal dichalcogenides, MX2 (M = Mo, W; X = S, Se, Te), which are closely related to the indirect to direct bandgap transition in monolayers. Here, we report the first direct observation of the transition from indirect to direct bandgap in monolayer samples by using angle resolved photoemission spectroscopy on high-quality thin films of MoSe2 with variable thickness, grown by molecular beam epitaxy. The band structure measured experimentally indicates a stronger tendency of monolayer MoSe2 towards a direct bandgap, as well as a larger gap size, than theoretically predicted. Moreover, our finding of a significant spin-splitting of 180 meV at the valence band maximum of a monolayer MoSe2 film could expand its possible application to spintronic devices.
description: 8 pages, 3 figures. Nature Nanotechnology (2013)
Embodiment y gesto desde la interactividad basada en la activación sensoriomotora en usuarios de inglés como lengua franca (ELF)
Creators: name: Valderrama Cárdenas, Juan Carlos
Publisher: name: Zenodo
Year: 2022
Subjects: ELF
Gesture
Embodied Cognition
Cognitive Event Analysis

description: Movemos espontáneamente las manos al hablar, sin embargo, tenemos una comprensión parcial de los mecanismos asociados. Por ello, el propósito de la presente propuesta, es describir cómo el gesto se involucra con la alineación de información espacio-motora en interacciones diádicas cara-a-cara, en situaciones estructuradas y mediadas por el inglés como lengua franca. La propuesta es basada en la perspectiva de la cognición corporeizada en donde la comunicación tiene lugar con base en la percepción y la acción.
Search for the Anomalous Interactions of Up-Type Heavy Quarks in $γγ$ Collision at the LHC
Creators: name: Köksal, M.
name: İnan, S. C.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We investigate the anomalous interactions of heavy up-type quark t' in a $γγ$ collision at the LHC. We have obtained 95% confidence level(CL)limit of $t'q γ$ anomalous coupling by taking into account three forward detector acceptances: $0.0015
description: 16 pages, 3 figures, 3 tables
Succinct Blind Quantum Computation Using a Random Oracle
Creators: name: Zhang, Jiayu
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: Cryptography and Security (cs.CR)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: In the universal blind quantum computation problem, a client wants to make use of a single quantum server to evaluate $C|0\rangle$ where $C$ is an arbitrary quantum circuit while keeping $C$ secret. The client's goal is to use as few resources as possible. This problem, with a representative protocol by Broadbent, Fitzsimons and Kashefi [FOCS09, arXiv:0807.4154], has become fundamental to the study of quantum cryptography, not only because of its own importance, but also because it provides a testbed for new techniques that can be later applied to related problems (for example, quantum computation verification). Known protocols on this problem are mainly either information-theoretically (IT) secure or based on trapdoor assumptions (public key encryptions). In this paper we study how the availability of symmetric-key primitives, modeled by a random oracle, changes the complexity of universal blind quantum computation. We give a new universal blind quantum computation protocol. Similar to previous works on IT-secure protocols (for example, BFK [FOCS09, arXiv:0807.4154]), our protocol can be divided into two phases. In the first phase the client prepares some quantum gadgets with relatively simple quantum gates and sends them to the server, and in the second phase the client is entirely classical -- it does not even need quantum storage. Crucially, the protocol's first phase is succinct, that is, its complexity is independent of the circuit size. Given the security parameter $κ$, its complexity is only a fixed polynomial of $κ$, and can be used to evaluate any circuit (or several circuits) of size up to a subexponential of $κ$. In contrast, known schemes either require the client to perform quantum computations that scale with the size of the circuit [FOCS09, arXiv:0807.4154], or require trapdoor assumptions [Mahadev, FOCS18, arXiv:1708.02130].
description: 231 pages, 8 figures, 1 table. Refine background
Complexity of $C_k$-coloring in hereditary classes of graphs
Creators: name: Chudnovsky, Maria
name: Huang, Shenwei
name: Rzążewski, Paweł
name: Spirkl, Sophie
name: Zhong, Mingxian
Publisher: name: arXiv
Year: 2020
Subjects: subject: Data Structures and Algorithms (cs.DS)
subject: Combinatorics (math.CO)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: For a graph $F$, a graph $G$ is \emph{$F$-free} if it does not contain an induced subgraph isomorphic to $F$. For two graphs $G$ and $H$, an \emph{$H$-coloring} of $G$ is a mapping $f:V(G)\rightarrow V(H)$ such that for every edge $uv\in E(G)$ it holds that $f(u)f(v)\in E(H)$. We are interested in the complexity of the problem $H$-{\sc Coloring}, which asks for the existence of an $H$-coloring of an input graph $G$. In particular, we consider $H$-{\sc Coloring} of $F$-free graphs, where $F$ is a fixed graph and $H$ is an odd cycle of length at least 5. This problem is closely related to the well known open problem of determining the complexity of 3-{\sc Coloring} of $P_t$-free graphs. We show that for every odd $k \geq 5$ the $C_k$-{\sc Coloring} problem, even in the list variant, can be solved in polynomial time in $P_9$-free graphs. The algorithm extends for the case of list version of $C_k$-{\sc Coloring}, where $k$ is an even number of length at least 10. On the other hand, we prove that if some component of $F$ is not a subgraph of a subdividecd claw, then the following problems are NP-complete in $F$-free graphs: a)extension version of $C_k$-{\sc Coloring} for every odd $k \geq 5$, b) list version of $C_k$-{\sc Coloring} for every even $k \geq 6$.
description: Accepted manuscript; see DOI for journal version. The extended abstract of the paper was presented at ESA 2019
Maxwell's macroscopic equations, the energy-momentum postulates, and the Lorentz law of force
Creators: name: Mansuripur, Masud
name: Zakharian, Armis R.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Classical Physics (physics.class-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We argue that the classical theory of electromagnetism is based on Maxwell's macroscopic equations, an energy postulate, a momentum postulate, and a generalized form of the Lorentz law of force. These seven postulates constitute the foundation of a complete and consistent theory, thus eliminating the need for actual (i.e., physical) models of polarization P and magnetization M, these being the distinguishing features of Maxwell's macroscopic equations. In the proposed formulation, P(r,t) and M(r,t) are arbitrary functions of space and time, their physical properties being embedded in the seven postulates of the theory. The postulates are self-consistent, comply with the requirements of the special theory of relativity, and satisfy the laws of conservation of energy, linear momentum, and angular momentum. One advantage of the proposed formulation is that it side-steps the long-standing Abraham-Minkowski controversy surrounding the electromagnetic momentum inside a material medium by simply "assigning" the Abraham momentum density E(r,t) x H(r,t)/c^2 to the electromagnetic field. This well-defined momentum is thus taken to be universal as it does not depend on whether the field is propagating or evanescent, and whether or not the host medium is homogeneous, transparent, isotropic, dispersive, magnetic, linear, etc. In other words, the local and instantaneous momentum density is uniquely and unambiguously specified at each and every point of the material system in terms of the E and H fields residing at that point. Any variation with time of the total electromagnetic momentum of a closed system results in a force exerted on the material media within the system in accordance with the generalized Lorentz law.
description: 11 pages, 3 figures, 15 equations, 29 references
Embodiment and gesture in problem solving oriented interactivity in English as a lingua franca (ELF) users
Creators: name: Valderrama Cárdenas, Juan Carlos
Publisher: name: Zenodo
Year: 2022
Subjects: ELF
Gesture
Embodied Cognition
Cognitive Event Analysis

description: Movemos espontáneamente las manos al hablar, sin embargo, tenemos una comprensión parcial de los mecanismos asociados. Por ello, el propósito de la presente propuesta, es describir cómo el gesto se involucra con la alineación de información espacio-motora en interacciones diádicas cara-a-cara, en situaciones estructuradas y mediadas por el inglés como lengua franca. La propuesta es basada en la perspectiva de la cognición corporeizada en donde la comunicación tiene lugar con base en la percepción y la acción.