cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Reservoir computing based on a silicon microring and time multiplexing for binary and analog operations
Creators: name: Borghi, Massimo
name: Biasi, Stefano
name: Pavesi, Lorenzo
Publisher: name: arXiv
Year: 2021
Subjects: subject: Applied Physics (physics.app-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Photonic implementations of reservoir computing (RC) promise to reach ultra-high bandwidth of operation with moderate training efforts. Several optoelectronic demonstrations reported state of the art performances for hard tasks as speech recognition, object classification and time series prediction. Scaling these systems in space and time faces challenges in control complexity, size and power demand, which can be relieved by integrated optical solutions. Silicon photonics can be the disruptive technology to achieve this goal. However, the experimental demonstrations have been so far focused on spatially distributed reservoirs, where the massive use of splitters/combiners and the interconnection loss limits the number of nodes. Here, we propose and validate an all optical RC scheme based on a silicon microring (MR) and time multiplexing. The input layer is encoded in the intensity of a pump beam, which is nonlinearly transferred to the free carrier concentration in the MR and imprinted on a secondary probe. We harness the free carrier dynamics to create a chain-like reservoir topology with 50 virtual nodes. We give proof of concept demonstrations of RC by solving two nontrivial tasks: the delayed XOR and the classification of Iris flowers. This forms the basic building block from which larger hybrid spatio-temporal reservoirs with thousands of nodes can be realized with a limited set of resources.
Collider Implications of Multiple Non-Universal Extra Dimensions
Creators: name: Ghavri, R.
name: McMullen, C. D.
name: Nandi, S.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We consider multiple TeV scale extra compact dimensions in an asymmetric string compactification scenario in which the SM gauge bosons can propagate into the TeV scale extra dimensions while the SM fermions are confined to the usual SM D3 brane. We calculate the contributions that the KK excitations of the gluons make to the multijet cross sections in proton proton collisions at the LHC energy. At very high pT, the dijet signal will either be enhanced significantly due to virtual g star exchanges or place a lower bound on the compactification scale of about 8 TeV. We find that the dijet signal is very sensitive to three parameters: the compactification scale, the string scale, and the number of extra dimensions. Thus, although the dijet signal is much more sensitive to KK effects, the dijet signal alone does not provide sufficient information to deduce the number of extra dimensions nor the compactification scale. However, the three jet signal, which is not sensitive to the string scale, can be analyzed in conjunction with the dijet signal to extract all three parameters. For proton proton collisions at the LHC energy, the three jet signal can be significantly enhanced by KK contributions for a compactification scale of about 4 to 5 TeV.
description: Replaced figures, updated references, corrected minor typos
Elastic Correlations in Nucleosomal DNA Structure
Creators: name: Mohammad-Rafiee, Farshid
name: Golestanian, Ramin
Publisher: name: arXiv
Year: 2007
Subjects: subject: Biomolecules (q-bio.BM)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: The structure of DNA in the nucleosome core particle is studied using an elastic model that incorporates anisotropy in the bending energetics and twist-bend coupling. Using the experimentally determined structure of nucleosomal DNA [T.J. Richmond and C.A. Davey, Nature {\bf 423}, 145 (2003)], it is shown that elastic correlations exist between twist, roll, tilt, and stretching of DNA, as well as the distance between phosphate groups. The twist-bend coupling term is shown to be able to capture these correlations to a large extent, and a fit to the experimental data yields a new estimate of G=25 nm for the value of the twist-bend coupling constant.
Verifying Graph Programs with First-Order Logic
Creators: name: Wulandari, Gia S.
name: Plump, Detlef
Publisher: name: arXiv
Year: 2020
Subjects: subject: Logic in Computer Science (cs.LO)
subject: FOS: Computer and information sciences

description: We consider Hoare-style verification for the graph programming language GP 2. In previous work, graph properties were specified by so-called E-conditions which extend nested graph conditions. However, this type of assertions is not easy to comprehend by programmers that are used to formal specifications in standard first-order logic. In this paper, we present an approach to verify GP 2 programs with a standard first-order logic. We show how to construct a strongest liberal postcondition with respect to a rule schema and a precondition. We then extend this construction to obtain strongest liberal postconditions for arbitrary loop-free programs. Compared with previous work, this allows to reason about a vastly generalised class of graph programs. In particular, many programs with nested loops can be verified with the new calculus.
description: In Proceedings GCM 2020, arXiv:2012.01181. arXiv admin note: substantial text overlap with arXiv:2010.14549
Online Training and Inference System on Edge FPGA Using Delayed Feedback Reservoir
Creators: name: Ikeda, Sosei
name: Awano, Hiromitsu
name: Sato, Takashi
Publisher: name: arXiv
Year: 2025
Subjects: subject: Hardware Architecture (cs.AR)
subject: FOS: Computer and information sciences

description: A delayed feedback reservoir (DFR) is a hardwarefriendly reservoir computing system. Implementing DFRs in embedded hardware requires efficient online training. However, two main challenges prevent this: hyperparameter selection, which is typically done by offline grid search, and training of the output linear layer, which is memory-intensive. This paper introduces a fast and accurate parameter optimization method for the reservoir layer utilizing backpropagation and gradient descent by adopting a modular DFR model. A truncated backpropagation strategy is proposed to reduce memory consumption associated with the expansion of the recursive structure while maintaining accuracy. The computation time is significantly reduced compared to grid search. Additionally, an in-place Ridge regression for the output layer via 1-D Cholesky decomposition is presented, reducing memory usage to be 1/4. These methods enable the realization of an online edge training and inference system of DFR on an FPGA, reducing computation time by about 1/13 and power consumption by about 1/27 compared to software implementation on the same board.
The Aleatoric Uncertainty Estimation Using a Separate Formulation with Virtual Residuals
Creators: name: Kawashima, Takumi
name: Yu, Qing
name: Asai, Akari
name: Ikami, Daiki
name: Aizawa, Kiyoharu
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: We propose a new optimization framework for aleatoric uncertainty estimation in regression problems. Existing methods can quantify the error in the target estimation, but they tend to underestimate it. To obtain the predictive uncertainty inherent in an observation, we propose a new separable formulation for the estimation of a signal and of its uncertainty, avoiding the effect of overfitting. By decoupling target estimation and uncertainty estimation, we also control the balance between signal estimation and uncertainty estimation. We conduct three types of experiments: regression with simulation data, age estimation, and depth estimation. We demonstrate that the proposed method outperforms a state-of-the-art technique for signal and uncertainty estimation.
Resonance overlap and non-linear features of the beam-plasma system
Creators: name: Carlevaro, Nakia
name: Montani, Giovanni
name: Falessi, Matteo Valerio
Publisher: name: arXiv
Year: 2020
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: The beam-plasma instability can be addressed as a reduced model in several contexts of plasma physics, from space to fusion plasma. In this paper, we review and refine some non-linear features of this model. Specifically, by analyzing the dependence of the non-linear velocity spread as a function of the linear growth rate, we discuss the effective size of the resonance in view of its role in the spectral overlap at saturation. The relevance of this characterization relies on the necessity of a quantitative determination of the overlap degree to discriminate among different transport regimes of the self consistent dynamics. The analysis is enriched with a study of the phase-space dynamics by means of the Lagrangian Coherent Structure technique, in order to define the transport barriers of the system describing the relevant features of the overlap process. Finally, we discuss relevant features related to the mode saturation levels.
description: 18 pages, 8 figures. arXiv admin note: text overlap with arXiv:1805.01821
Recollapsing quantum cosmologies and the question of entropy
Creators: name: Bojowald, Martin
name: Tavakol, Reza
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Recollapsing homogeneous and isotropic models present one of the key ingredients for cyclic scenarios. This is considered here within a quantum cosmological framework in presence of a free scalar field with, in turn, a negative cosmological constant and spatial curvature. Effective equations shed light on the quantum dynamics around a recollapsing phase and the evolution of state parameters such as fluctuations and correlations through such a turn around. In the models considered here, the squeezing of an initial state is found to be strictly monotonic in time during the expansion, turn around and contraction phases. The presence of such monotonicity is of potential importance in relation to a long standing intensive debate concerning the (a)symmetry between the expanding and contracting phases in a recollapsing universe. Furthermore, together with recent analogous results concerning a bounce one can extend this monotonicity throughout an entire cycle. This provides a strong motivation for employing the degree of squeezing as an alternative measure of (quantum) entropy. It may also serve as a new concept of emergent time described by a variable without classical analog. The evolution of the squeezing in emergent oscillating scenarios can in principle provide constraints on the viability of such models.
description: 23 pages, 2 figures
A Practical Concatenated Coding Scheme for Noisy Shuffling Channels with Coset-based Indexing
Creators: name: Haghighat, Javad
name: Duman, Tolga M.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: Noisy shuffling channels capture the main characteristics of DNA storage systems where distinct segments of data are received out of order, after being corrupted by substitution errors. For realistic schemes with short-length segments, practical indexing and channel coding strategies are required to restore the order and combat the channel noise. In this paper, we develop a finite-length concatenated coding scheme that employs Reed-Solomon (RS) codes as outer codes and polar codes as inner codes, and utilizes an implicit indexing method based on cosets of the polar code. We propose a matched decoding method along with a metric for detecting the index that successfully restores the order, and correct channel errors at the receiver. Residual errors that are not corrected by the matched decoder are then corrected by the outer RS code. We derive analytical approximations for the frame error rate of the proposed scheme, and also evaluate its performance through simulations to demonstrate that the proposed implicit indexing method outperforms explicit indexing.
Laelaps explanatus Cope, 1876, sp. nov.
Creators: name: Cope, E. D.
Publisher: name: Zenodo
Year: 1876
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Reptilia
Dinosauria
Ascidae
Laelaps
Laelaps explanatus

description: Laelaps explanatus,  sp. nov.
 An abundant species, but as yet represented only by teeth which are about the size of those of the largest of living Varanidae.
 The  crowns are strongly compressed and curved; one side is flat, the other gently convex; the posterior cutting edge is median and concave. The anterior edge is not continued to the base of the crown, and disappears before attaining the apex; it is feebly denticulate, and only at its convex curvature  towards the apex; its course is median. The flat face has a slight bevel to the posterior edge. Surface smooth, without transverse unidulations.
description: Published as part of Cope, E. D., 1876, Descriptions of some vertebrate remains from the Fort Union beds of Montana, pp. 248-261 in Proceedings of the Academy of Natural Sciences of Philadelphia 28 on page 249, DOI: 10.5281/zenodo.3371111
On the Precision of a Length Measurement
Creators: name: Calmet, Xavier
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We show that quantum mechanics and general relativity imply the existence of a minimal length. To be more precise, we show that no operational device subject to quantum mechanics, general relativity and causality could exclude the discreteness of spacetime on lengths shorter than the Planck length. We then consider the fundamental limit coming from quantum mechanics, general relativity and causality on the precision of the measurement of a length.
description: 5 pages, to appear in the proceedings of the 2006 International School of Subnuclear Physics in Erice and in ''Young Scientists'' online-only supplement of the European Physical Journal C-Direct (Springer)
Knowledge requirements of coronary artery bypass graft patients and their partners during the third to fourth week period after discharge from the hospital
Creators: name: Tippett, Deborah Maureen
Publisher: name: University of British Columbia
Year: 2009

description: The purpose of this study was to describe the knowledge requirements of primary coronary artery bypass graft (CABG) patients and their partners during the third to fourth week after discharge from the hospital. In addition, comparisons and correlations of knowledge requirements between the primary CABG patients and their partners were made. This descriptive comparative study was conducted in a major teaching hospital in western Canada that specializes in cardiovascular surgeries. A convenience sample of 40 participants-20 primary CABG patients and their partners completed a questionnaire, the Knowledge Requirements of Primary Coronary Artery Bypass Graft Patients and Their Partners During the Third to Fourth Week Period After Discharge from the Hospital, and also demographic guides. Knowledge requirements did not significantly differ between the primary CABG patients and their partners. However, there were differences reported as demonstrated by the partners' desire for more knowledge requirements than the primary CABG patients. Moreover, the primary CABG patients and their partners demonstrated a statistically significant correlation of the majority of knowledge requirements. Trends in the ratings with respect to health related characteristics suggested that CABG surgery was associated with lifestyle changes and an optimism for the future in both primary CABG patients and their partners. The findings were discussed relative to the conceptual framework for the study, other research studies, and the methodological problems inherent in the study. Implications and recommendations for nursing practice and nursing research were suggested.
Nuclear Moments of Germanium Isotopes around $N$ = 40
Creators: name: Kanellakopoulos, A.
name: Yang, X. F.
name: Bissell, M. L.
name: Reitsma, M. L.
name: Bai, S. W.
name: Billowes, J.
name: Blaum, K.
name: Borschevsky, A.
name: Cheal, B.
name: Devlin, C. S.
name: Ruiz, R. F. Garcia
name: Heylen, H.
name: Kaufmann, S.
name: König, K.
name: Koszorús, Á.
name: Lechner, S.
name: Malbrunot-Ettenauer, S.
name: Neugart, R.
name: Neyens, G.
name: Nörtershäuser, W.
name: Ratajczyk, T.
name: Rodríguez, L. V.
name: Sels, S.
name: Wang, S. J.
name: Xie, L.
name: Xu, Z. Y.
name: Yordanov, D. T.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Collinear laser spectroscopy measurements were performed on $^{69,71,73}$Ge isotopes ($Z = 32$) at ISOLDE-CERN. The hyperfine structure of the $4s^2 4p^2 \, ^3P_1 \rightarrow 4s^2 4p 5s \, ^3P_1^o$ transition of the germanium atom was probed with laser light of 269 nm, produced by combining the frequency-mixing and frequency-doubling techniques. The hyperfine fields for both atomic levels were calculated using state-of-the-art atomic relativistic Fock-space coupled-cluster calculations. A new $^{73}$Ge quadrupole moment was determined from these calculations and previously measured precision hyperfine parameters, yielding $Q_{\rm s}$ = $-$0.198(4) b, in excellent agreement with the literature value from molecular calculations. The moments of $^{69}$Ge have been revised: $μ$ = +0.920(5) $μ_{N}$ and $Q_{\rm s}$= +0.114(8) b, and those of $^{71}$Ge have been confirmed. The experimental moments around $N = 40$ are interpreted with large-scale shell-model calculations using the JUN45 interaction, revealing rather mixed wave function configurations, although their $g$-factors are lying close to the effective single-particle values. Through a comparison with neighboring isotones, the structural change from the single-particle nature of nickel to deformation in germanium is further investigated around $N = 40$.
description: accepted in Phys. Rev. C., in production
A Combination Theorem for Strong Relative Hyperbolicity
Creators: name: Mj, Mahan
name: Reeves, Lawrence
Publisher: name: arXiv
Year: 2006
Subjects: subject: Geometric Topology (math.GT)
subject: Group Theory (math.GR)
subject: FOS: Mathematics
subject: 20F67, 20F65, 57M50, 57M07

description: We prove a combination theorem for trees of (strongly) relatively hyperbolic spaces and finite graphs of (strongly) relatively hyperbolic groups. This gives a geometric extension of Bestvina and Feighn's Combination Theorem for hyperbolic groups and answers a question of Swarup. We also prove a converse to the main Combination Theorem.
description: v2: 19 pages, no figures. Slight typographical differences with published version. Converse to main combination theorem added
Simultaneous INTEGRAL and RXTE observations of the accreting millisecond pulsar HETE J1900.1-2455
Creators: name: Falanga, M.
name: Poutanen, J.
name: Bonning, E. W.
name: Kuiper, L.
name: Bonnet-Bidaud, J. M.
name: Goldwurm, A.
name: Hermsen, W.
name: Stella, L.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Aims: Hete J1900.1-2455 is the seventh known X-ray transient accreting millisecond pulsar and has been in outburst for more than one year. We compared the data on Hete J1900.1-2455 with other similar objects and made an attempt at deriving constraints on the physical processes responsible for a spectral formation. Methods: The broad-band spectrum of the persistent emission in the 2-300 keV energy band and the timing properties were studied using simultaneous INTEGRAL and the publicly available RXTE data obtained in October 2005. The properties of the X-ray bursts observed from Hete J1900.1-2455 were also investigated. Results: The spectrum is well described by a two-component model consisting of a blackbody-like soft X-ray emission at 0.8 keV temperature and a thermal Comptonized spectrum with the electron temperature of 30 keV and Thomson optical depth tau_T ~ 2 for the slab geometry. The source is detected by INTEGRAL up to 200 keV at the luminosity of 5E36 erg/s (assuming a distance of 5 kpc) in the 0.1-200 keV energy band. We have also detected one type I X-ray burst which shows the photospheric radius expansion. The burst occurred at an inferred persistent emission level of ~ 3-4% of the Eddington luminosity. Using the data for all X-ray bursts observed to date from Hete J1900.1-2455, the burst recurrence time is estimated to be about 2 days. No pulsations have been detected either in the RXTE or in the INTEGRAL data which puts interesting constraints on theories of the magnetic field evolution in neutron star low-mass X-ray binaries.
description: 7 pages, 4 figures, accepted for publication in A&A
Liriomyza tricornis Lonsdale 2011, spec. nov.
Creators: name: Lonsdale, Owen
Publisher: name: Zenodo
Year: 2011
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Agromyzidae
Liriomyza
Liriomyza tricornis

description: Liriomyza tricornis spec. nov. Figs 210–213 Wing length 2.1mm (♂). Female unknown. Length of ultimate section of vein CuA 1 divided by penultimate section: 2.5. Eye height divided by gena height: 5.0. Scutum subshining. Chaetotaxy: Two ori, one ors. Acrostichal setulae in four rows. Colouration: Calypter margin and hairs dark brown. Head yellow with antenna darker, ventral margin of gena with thin brownish stripe, clypeus, ocellar triangle and back of head dark brown, and posterolateral corner of frons dark brown to base of outer vertical bristle and lighter brown to base of inner vertical bristle. Scutum with complete lateral yellow stripe; laterotergites brown with dorsal 1/3 of katatergite yellow. Pleuron dark brown with dorsal 1/3 of anepisternum and dorsal margin of katepisternum yellow. Coxae dark brown with tip of fore coxa yellow; femora yellow with brown base and dorsal streaking; tibiae and tarsi dark brown. Abdomen dark brown. Genitalia: Figs 210–213. Surstylus broadly rounded with several apical setulae and two basal spines in desclerotized region. Paraphallus thin and bar-like. Hypophallus thin with few apical hairs fused to a point. Mesophallus rounded at sides and slightly longer than wide; mesophallus and distiphallus with complete ventral sulcus. Distiphallus cup-shaped, slightly compressed dorsoventrally, with darker base (walls thickest on dorsal and ventral surfaces) and pale hollow distal section enclosing weak hairs. Ejaculatory apodeme with base of duct and pileus ejaculatorius lightly-sclerotized; stem thin past base and blade broad and subovate with marginal streaking. Etymology. The specific epithet denotes the three (L. tri -) pairs of fronto-orbitals (L. cornu) on the frons. Host. Unknown. Range. USA. California [San Mateo]. Type material. Holotype, USA. California: San Mateo Co., South San Francisco, 326 Alta Loma Drive, 1– 25.i.2007, 30m, 37°39’39.8”N, 122°26’36.0”W, P.H. & M.M. Arnaud, Jr., & M.L. Tarbox, Arnaud Malaise trap (1♂, USNM). Comments. Liriomyza tricornis differs subtly from similar species in having only three pairs of fronto-orbitals on both sides of the frons. The surstylus is also unique in having two spines in a desclerotized basal region (not the sclerotized apical region), the hypophallus is thin and pointed, and the left distolateral lobe on the basiphallus is sclerotized, resembling the paraphallus.
description: Published as part of Lonsdale, Owen, 2011, The Liriomyza (Agromyzidae: Schizophora: Diptera) of California 2850, pp. 1-123 in Zootaxa 2850 (1) on page 104, DOI: 10.11646/zootaxa.2850.1.1, http://zenodo.org/record/5287220
SRQA: Synthetic Reader for Factoid Question Answering
Creators: name: Wang, Jiuniu
name: Xu, Wenjia
name: Fu, Xingyu
name: Wei, Yang
name: Jin, Li
name: Chen, Ziyan
name: Xu, Guangluan
name: Wu, Yirong
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computation and Language (cs.CL)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: The question answering system can answer questions from various fields and forms with deep neural networks, but it still lacks effective ways when facing multiple evidences. We introduce a new model called SRQA, which means Synthetic Reader for Factoid Question Answering. This model enhances the question answering system in the multi-document scenario from three aspects: model structure, optimization goal, and training method, corresponding to Multilayer Attention (MA), Cross Evidence (CE), and Adversarial Training (AT) respectively. First, we propose a multilayer attention network to obtain a better representation of the evidences. The multilayer attention mechanism conducts interaction between the question and the passage within each layer, making the token representation of evidences in each layer takes the requirement of the question into account. Second, we design a cross evidence strategy to choose the answer span within more evidences. We improve the optimization goal, considering all the answers' locations in multiple evidences as training targets, which leads the model to reason among multiple evidences. Third, adversarial training is employed to high-level variables besides the word embedding in our model. A new normalization method is also proposed for adversarial perturbations so that we can jointly add perturbations to several target variables. As an effective regularization method, adversarial training enhances the model's ability to process noisy data. Combining these three strategies, we enhance the contextual representation and locating ability of our model, which could synthetically extract the answer span from several evidences. We perform SRQA on the WebQA dataset, and experiments show that our model outperforms the state-of-the-art models (the best fuzzy score of our model is up to 78.56%, with an improvement of about 2%).
description: arXiv admin note: text overlap with arXiv:1809.00676
Spin waves in the Frustrated Kagome Lattice Antiferromagnet KFe3(OH)6(SO4)2
Creators: name: Matan, K.
name: Grohol, D.
name: Nocera, D. G.
name: Yildirim, T.
name: Harris, A. B.
name: Lee, S. H.
name: Nagler, S. E.
name: Lee, Y. S.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The spin wave excitations of the ideal S=5/2 Kagome lattice antiferromagnet KFe3(OH)6(SO4)2 have been measured using high-resolution inelastic neutron scattering. We directly observe a flat mode which corresponds to a lifted "zero energy mode," verifying a fundamental prediction for the Kagome lattice. A simple Heisenberg spin Hamiltonian provides an excellent fit to our spin wave data. The antisymmetric Dzyaloshinskii-Moriya interaction is the primary source of anisotropy and explains the low temperature magnetization and spin structure.
description: 4 pages, 3 figures
Laelaps falculus Cope, 1876, sp. nov.
Creators: name: Cope, E. D.
Publisher: name: Zenodo
Year: 1876
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Reptilia
Dinosauria
Ascidae
Laelaps
Laelaps falculus

description: Laelaps falculus, sp. nov.
 Represented by several teeth of about half the size of those of the last described reptile. They differ in form in several respects, being relatively shorter and stouter, and less sectorial in character. The lateral surfaces are about equally convex, while the aniterior face is narrowly obtuse, and without cutting edge.  The posterior edge is concave and furnished with a seriation of smnaller denticles than  in the L. explanatus; it is median in position.
 Found by Jno. C. Isaac.
description: Published as part of Cope, E. D., 1876, Descriptions of some vertebrate remains from the Fort Union beds of Montana, pp. 248-261 in Proceedings of the Academy of Natural Sciences of Philadelphia 28 on page 249, DOI: 10.5281/zenodo.3371111
Evidence for Roman – Early Medieval habitation on the plateau at St. Geertruid - Steenbergen (NL)
Creators: name: Groen, Jimmy
Publisher: name: Zenodo
Year: 2019
Subjects: Roman, villa, Steenbergen, Rijckholt, Schoone Grub, Roman pottery, settlement, South Limburg

description: At the plateau’s edge above the east Maas river valley between the
 Dutch South -Limburg villages Eckelrade and Gronsveld, a number of
 finds from the Roman period is providing clear evidence for habitation
 during the Roman period. Finds include pottery sherds, glass
 fragments of a Roman bowl, some fragments of Roman window pane
 glass and roof tile parts as well as a Roman coin from the second
 century AD. A tentative conclusion would be that, particularly given
 the diversity of the finds, it would involve an inhabited area, used in
 the Roman period, possibly the site located a Roman villa. The
 relationship with the field name Steenbergen seems to be demonstrated
 by this.
description: Personal observations.
Total Moment Sum Rule for Magnets in the Vicinity of Quantum Critical Point
Creators: name: Matsumoto, Masashige
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: It is known that the longitudinal and transverse excitation modes can exist in the vicinity of a quantum critical point in the ordered phase of quantum magnetic systems. The total moment sum rule for such systems is derived on the basis of the extended spin-wave theory, where both longitudinal and transverse magnetic excitations are taken into account. The sum rule is resolved into elastic, one-magnon, and two-magnon components. The formulation is applicable to spin systems with the longitudinal mode, such as $S=1$ systems with single-ion anisotropy of easy-plane type and spin dimer systems. The result helps us analyze and understand measured data of inelastic neutron scattering.
description: 16 pages, 10 figures
Gravito-magnetic resonance in the field of a gravitational wave
Creators: name: Ruggiero, Matteo Luca
name: Ortolan, Antonello
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Using the construction of the Fermi frame, the field of a gravitational wave can be described in terms of gravito-electromagnetic fields that are transverse to the propagation direction and orthogonal to each other. In particular, the gravito-magnetic field acts on spinning particles and we show that, due to the action of the gravitational wave field, a new phenomenon, that we call gravito-magnetic resonance, may appear. We give both a classical and a quantum description of this phenomenon and suggest that it can be used as the basis for a new type of gravitational wave detectors. Our results highlight the effectiveness of collective spin excitations, e.g. spin waves in magnetized materials, in detecting high frequency gravitational waves. Here we suggest that, when gravitational waves induce a precession of the electron spin, power is released in the ferromagnetic resonant mode endowed with quadrupole symmetry of a magnetized sphere. This offers a possible path to the detection of the gravito-magnetic effects of a gravitational wave.
description: 6 pages
Quantum Corrections in Quintessence Models
Creators: name: Garny, Mathias
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We investigate the impact of quantum fluctuations on a light rolling quintessence field from three different sources, namely, from a coupling to the standard model and dark matter, from its self-couplings and from its coupling to gravity. We derive bounds for time-varying masses from the change of vacuum energy, finding Δm_e/m_e << 10^{-11} for the electron and Δm_p/m_p << 10^{-15} for the proton since redshift z~2, whereas the neutrino masses could change of order one. Mass-varying dark matter is also constrained. Next, the self-interactions are investigated. For inverse power law potentials, the effective potential does not become infinitely large at small field values, but saturates at a finite maximal value. We discuss implications for cosmology. Finally, we show that one-loop corrections induce non-minimal gravitational couplings involving arbitrarily high powers of the curvature scalar R, indicating that quintessence entails modified gravity effects.
description: 10 pages + appendix, added references
Calibrating the Galactic Cepheid Period-Luminosity relation from the maximum-likelihood technique
Creators: name: Lazovik, Yaroslav
name: Rastorguev, Alexey
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present a realization of the maximum-likelihood (ML) technique, which is one of the latest modifications of the Baade--Becker--Wesselink (BBW) method. Our approach is based on non-linear calibrations of the effective temperature and bolometric correction which take into account metallicity and surface gravity. It allows one to estimate the key Cepheid parameters, the distance modulus, and the interstellar reddening, combining photometric and spectroscopic data (including the effective temperature data). This method is applied to a sample of 44 Galactic Cepheids, for which multiphase temperature measurements are available. The additional data correction is performed to subtract the impact of the component in binary/multiple systems. We also study the effect of shock waves, whose presence in the stellar atmosphere distorts the observational data and leads to systematic errors in the obtained parameters. We determine the optimal restriction on the input data to eliminate this effect. This restriction provides accurate period-radius and period-luminosity relations which are consistent with the results in previous studies. We found the following relations: $log\,R = (0.68 \pm 0.03) \cdot log\,P + (1.14 \pm 0.03)$, $M_v = - (2.67 \pm 0.16) \cdot (log\,P - 1) - (4.14 \pm 0.05)$.
description: 14 pages, 12 figures, 4 tables
Effects of heavy bosonic excitations on QED vacuum
Creators: name: Arias, Paola
name: Falomir, Horacio
name: Gamboa, Jorge
name: Mendez, Fernando
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We discuss the contribution of axion-like excitations (ALE) to the vacuum birrefringence in the limit $m_A \gtrsim ω$, where $m_A$ is the mass of the excitation and $ω$ the energy of test photons interacting with an external (intense) magnetic field. The relevance of this term with respect to the QED contribution depends on the ratio $g_A/m_A$ and, from present bounds on the mass and the coupling constant $g_A$, we find that in the present low energy regime, it ranges from $10^{-14}$ to $10^2$ suggesting an interesting alternative to explore.
description: References adde and section II rewritten. MPLA in press
Dysganus bicarinatus Cope, 1876, sp.nov.
Creators: name: Cope, E. D.
Publisher: name: Zenodo
Year: 1876
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Reptilia
Dinosauria
Ceratopsidae
Dysganus
Dysganus bicarinatus

description: Dysganus bicarinatus, sp.nov.
 This dinosaurian is represented in the  collections by some of the teeth of three individuals. Two of the teeth represent immature stages , while the others are worn by continued use. They all present characters not found in the D. encaustus, from which they differ in a direction the opposite of that which characterizes the D. haydenianus.
 The crowns present a nearly flat face without incurved lateral angles, nor prominent median keel. The basis is widle, projects in a rim beyond the face, and is invested with rough cementum. The face is peculiar in beinig divided into three planes by two low angular ridges, and its surface is smooth. The dentinal column is triangular, and there are two posterior columns separated by a fissure, in mature teetlh.
 The absence of the lateral incurved angle, and the presence of the two median ones distinguish this species from the D. encaustus.
description: Published as part of Cope, E. D., 1876, Descriptions of some vertebrate remains from the Fort Union beds of Montana, pp. 248-261 in Proceedings of the Academy of Natural Sciences of Philadelphia 28 on page 252, DOI: 10.5281/zenodo.3371111
Dynamic Preference Logic meets Iterated Belief Change: Representation Results and Postulates Characterization
Creators: name: Souza, Marlo
name: Moreira, Álvaro
name: Vieira, Renata
Publisher: name: arXiv
Year: 2021
Subjects: subject: Logic in Computer Science (cs.LO)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences
subject: F.4.1; I.2.4
subject: 68T30

description: AGM's belief revision is one of the main paradigms in the study of belief change operations. Recently, several logics for belief and information change have been proposed in the literature and used to encode belief change operations in rich and expressive semantic frameworks. While the connections of AGM-like operations and their encoding in dynamic doxastic logics have been studied before by the work of Segerberg, most works on the area of Dynamic Epistemic Logics (DEL) have not, to our knowledge, attempted to use those logics as tools to investigate mathematical properties of belief change operators. This work investigates how Dynamic Preference Logic, a logic in the DEL family, can be used to study properties of dynamic belief change operators, focusing on well-known postulates of iterated belief change.
Spatiotemporal Memory in a Diffusion-Reaction System
Creators: name: Schulz, Michael
name: Trimper, Steffen
name: Zabrocki, Knud
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We consider a reaction-diffusion process with retardation. The particles, immersed in traps initially, remain inactive until another particle is annihilated spontaneously with a rate $λ$ at a certain point $\vec x$. In that case the traps within a sphere of radius $R(t)= v t^α$ around $\vec x$ will be activated and a particle is released with a rate $μ$. Due to the competition between both reactions the system evolves three different time regimes. While in the initial time interval the diffusive process dominates the behavior of the system, there appears a transient regime, where the system shows a driveling wave solution which tends to a non-trivial stationary solution for $v \to 0$. In that regime one observes a very slow decay of the concentration. In the final long time regime a crossover to an exponentially decaying process is observed. In case of $λ= μ$ the concentration is a conserved quantity whereas for $μ> λ$ the total particle number tends to zero after a finite time. The mean square displacement offers an anomalous diffusive behavior where the dynamic exponent is determined by the exponent $α$. In one dimension the model can be solved exactly. In higher dimension we find approximative analytical results in very good agreement with numerical solutions. The situation could be applied for the development of a bacterial colony or a gene-pool.
description: 14 pages
Pinning effects in a two-dimensional cluster glass
Creators: name: Wang, Wenlong
name: Díaz-Méndez, Rogelio
name: Wallin, Mats
name: Lidmar, Jack
name: Babaev, Egor
Publisher: name: arXiv
Year: 2020
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We study numerically the glass formation and depinning transition of a system of two-dimensional cluster-forming monodisperse particles in presence of pinning disorder. The pairwise interaction potential is nonmonotonic, and is motivated by the intervortex forces in type-$1.5$ superconductors. Such systems can form cluster glasses due to the intervortex interactions following a thermal quench, without underlying disorder. We study the effects of vortex pinning in these systems. We find that a small density of pinning centers of moderate depth has limited effect on vortex glass formation, i.e., formation of vortex glasses is dominated by intervortex interactions. At higher densities pinning can significantly affect glass formation. The cluster glass depinning, under a constant driving force, is found to be plastic, with features distinct from non-cluster-forming systems such as clusters merging and breaking. We find that in general vortices with cluster-forming interaction forces can exhibit stronger pinning effects than regular vortices.
description: 10 pages, 10 figures
Opistognathus variabilis Smith-Vaniz 2009
Creators: name: Ho, Hsuan-Ching
name: Shao, Kwang-Tsao
Publisher: name: Zenodo
Year: 2011
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Actinopterygii
Perciformes
Opistognathidae
Opistognathus
Opistognathus variabilis

description: 183. Opistognathus variabilis Smith –Vaniz, 2009:92, Figs. 1e–f, 2e, 3d, 4e–f, 25–43 Paratype: ASIZP 56989 (2 juveniles, 40.1–40.4), 22°4’N 121°34’E, Lan –tao,NE coast of Lan –yu, Orchid (or Botal) Island, sand bottom, depth 18 m, 7 July 1993, coll. J. P. Chen. Other types: Holotype (NCIP 6348) and 69 paratypes.
description: Published as part of Ho, Hsuan-Ching & Shao, Kwang-Tsao, 2011, 2957, pp. 1-74 in Zootaxa 2957 on page 43
Dysganus peiganus Cope, 1876, sp.nov.
Creators: name: Cope, E. D.
Publisher: name: Zenodo
Year: 1876
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Reptilia
Dinosauria
Ceratopsidae
Dysganus
Dysganus peiganus

description: Dysganus peiganus,  sp.nov.
 In the typical tooth of this species the form approaches the genus Palaeoscincus, Leidy, in the compression of the crown, and the contraction of the base; it is a limital species of Dysganus if really properly placed in that genus.
 The widest  portion of the crown is above the base; from this expansion it contracts in both directions, and in the unworn tooth forms an angular median apex. This  is not the case in D. encaustus, which is regularly rounded. The margin of the crown is narrowed, expanding but little towards the  expansion, and is quite rugose. From these rugosities low ridges descend on the face of the tooth, whose surface is also minutely rugose. The face is divided by a prominent median rib, which extends to the apex. No cementum is visible on the basis, in the only specimen in which this  part is preserved.
description: Published as part of Cope, E. D., 1876, Descriptions of some vertebrate remains from the Fort Union beds of Montana, pp. 248-261 in Proceedings of the Academy of Natural Sciences of Philadelphia 28 on page 252, DOI: 10.5281/zenodo.3371111
High-reflectance III-nitride distributed Bragg reflectors grown on Si substrates
Creators: name: Mastro, M. A.
name: Holm, R. T.
name: Bassim, N. D.
name: Eddy, C. R.
name: Gaskill, D. K.
name: Henry, R. L.
name: Twigg, M. E.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Distributed Bragg reflectors (DBRs) composed of an AlN/AlGaN superlattice were grown of Si (111) substrates. The first high-reflectance III-nitride DBR on Si was achieved by growing the DBR directly on the Si substrate to enhance the overall reflectance due to the high index of refraction contrast at the Si/AlN interface. For a 9x DBR, the measured peak reflectance of 96.8% actually exceeded the theoretical value of 96.1%. The AlN/AlGaN superlattice served the added purpose of compensating the large tensile strain developed during the growth of a crack-free 500 nm GaN / 7x DBR / Si structure. This achievement opens the possibility to manufacture high-quality III-nitride optoelectronic devices without optical absorption in the opaque Si substrate.
A Global Medical Data Security and Privacy Preserving Standards Identification Framework for Electronic Healthcare Consumers
Creators: name: Mishra, Vinaytosh
name: Gupta, Kishu
name: Saxena, Deepika
name: Singh, Ashutosh Kumar
Publisher: name: arXiv
Year: 2024
Subjects: subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Electronic Health Records (EHR) are crucial for the success of digital healthcare, with a focus on putting consumers at the center of this transformation. However, the digitalization of healthcare records brings along security and privacy risks for personal data. The major concern is that different countries have varying standards for the security and privacy of medical data. This paper proposed a novel and comprehensive framework to standardize these rules globally, bringing them together on a common platform. To support this proposal, the study reviews existing literature to understand the research interest in this issue. It also examines six key laws and standards related to security and privacy, identifying twenty concepts. The proposed framework utilized K-means clustering to categorize these concepts and identify five key factors. Finally, an Ordinal Priority Approach is applied to determine the preferred implementation of these factors in the context of EHRs. The proposed study provides a descriptive then prescriptive framework for the implementation of privacy and security in the context of electronic health records. Therefore, the findings of the proposed framework are useful for professionals and policymakers in improving the security and privacy associated with EHRs.
Communication Links for Distributed Quantum Computation
Creators: name: Van Meter, Rodney
name: Nemoto, Kae
name: Munro, W. J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Distributed quantum computation requires quantum operations that act over a distance on error-correction encoded states of logical qubits, such as the transfer of qubits via teleportation. We evaluate the performance of several quantum error correction codes, and find that teleportation failure rates of one percent or more are tolerable when two levels of the [[23,1,7]] code are used. We present an analysis of performing quantum error correction (QEC) on QEC-encoded states that span two quantum computers, including the creation of distributed logical zeroes. The transfer of the individual qubits of a logical state may be multiplexed in time or space, moving serially across a single link, or in parallel across multiple links. We show that the performance and reliability penalty for using serial links is small for a broad range of physical parameters, making serial links preferable for a large, distributed quantum multicomputer when engineering difficulties are considered. Such a multicomputer will be able to factor a 1,024-bit number using Shor's algorithm with a high probability of success.
description: 9 pages, 5 figures