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Journal articles on the topic 'Continuous/discontinuous connector'

Author: Grafiati

Published: 4 June 2021

Last updated: 16 February 2022

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1

Burlakov, Evgenii O., та Ivan N. Malkov. "On connection between continuous and discontinuous neural ﬁeld models with microstructure: II. Radially symmetric stationary solutions in 2D (“bumps”)". Russian Universities Reports. Mathematics, № 129 (2020): 6–17. http://dx.doi.org/10.20310/2686-9667-2020-25-129-6-17.

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We suggest a method allowing to investigate existence and the measure of proximity between the stationary solutions to continuous and discontinuous neural ﬁelds with microstructure. The present part involves results on proximity of the stationary solutions to speciﬁc homogenized neural ﬁeld equations with continuous and discontinuous activation functions. The results of numerical investigation of radially symmetric stationary solutions (bumps) to the neural ﬁeld with a discontinuous activation function and a given microstructure are presented.

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2

Sun, Chao Ming. "Recovery Techniques for Complex Grain Boundaries." Applied Mechanics and Materials 364 (August 2013): 854–58. http://dx.doi.org/10.4028/www.scientific.net/amm.364.854.

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When estimating the grain size, the processing effect for complex grain boundaries is often poor. To solve this problem, the recovery techniques for complex grain boundary are studied. After analysis of steps to estimate the grain size, we know that it is critical to get more accurate boundary before quantitative determination, and the discontinuous points among grain boundaries should be connected. Therefore, two methods to connect the discontinuous points were established, and it showed that watershed method is more efficient; however over-segmentation and under-segmentation exist. According

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Gaussier, Hervé, and Xianghong Gong. "Smooth Equivalence of Deformations of Domains in Complex Euclidean Spaces." International Mathematics Research Notices 2020, no. 18 (2018): 5578–610. http://dx.doi.org/10.1093/imrn/rny168.

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Abstract We prove that two smooth families of 2-connected domains in $\mathbf{C}$ are smoothly equivalent if they are equivalent under a possibly discontinuous family of biholomorphisms. We construct, for $\infty &gt; m \geq 3$, two smooth families of smoothly bounded $m$-connected domains in $\mathbf{C}$, and for $n\geq 2$, two families of strictly pseudoconvex domains in $\mathbf{C}^n$, which are equivalent under discontinuous families of biholomorphisms but not under any continuous family of biholomorphisms. Finally, we give sufficient conditions for the smooth equivalence of two smooth

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Kumar, Gautam, and Mayuresh V. Kothare. "On the Continuous Differentiability of Inter-Spike Intervals of Synaptically Connected Cortical Spiking Neurons in a Neuronal Network." Neural Computation 25, no. 12 (2013): 3183–206. http://dx.doi.org/10.1162/neco_a_00503.

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We derive conditions for continuous differentiability of inter-spike intervals (ISIs) of spiking neurons with respect to parameters (decision variables) of an external stimulating input current that drives a recurrent network of synaptically connected neurons. The dynamical behavior of individual neurons is represented by a class of discontinuous single-neuron models. We report here that ISIs of neurons in the network are continuously differentiable with respect to decision variables if (1) a continuously differentiable trajectory of the membrane potential exists between consecutive action pot

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Liu, Heng, Jie Hong, and Dayi Zhang. "Bending and vibration of a discontinuous beam with a curvic coupling under different axial forces." Frontiers of Mechanical Engineering 15, no. 3 (2020): 417–29. http://dx.doi.org/10.1007/s11465-019-0584-4.

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Abstract The transverse stiffness and vibration characteristics of discontinuous beams can significantly differ from those of continuous beams given that an abrupt change in stiffness may occur at the interface of the former. In this study, the equations for the deflection curve and vibration frequencies of a simply supported discontinuous beam under axial loads are derived analytically on the basis of boundary, continuity, and deformation compatibility conditions by using equivalent spring models. The equation for the deflection curve is solved using undetermined coefficient methods. The norm

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Ferreira, Carina Fonseca, Dina D’Ayala, Jose L. Fernandez Cabo, and Rafael Díez. "Numerical Modelling of Historic Vaulted Timber Structures." Advanced Materials Research 778 (September 2013): 517–25. http://dx.doi.org/10.4028/www.scientific.net/amr.778.517.

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Historic timber structures forming vaulted roofs of public and ecclesiastical buildings are present worldwide. The structural response of these constructions is usually governed by the structural performance of the joints, the interaction between the timber structure and the masonry parts, and the current condition of both joints and timber members. At present, numerical approaches, such as finite element method-based approaches are well-established tools for investigating the global response of complex historic structures. Using a FE-based software package, the authors developed a numerical m

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Sakai, Taku, and Hiromi Miura. "Annealing of Deformed Materials Developed by Continuous/Discontinuous Dynamic Recrystallization." Materials Science Forum 550 (July 2007): 327–32. http://dx.doi.org/10.4028/www.scientific.net/msf.550.327.

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Annealing behaviour was studied in deformed copper developed by continuous or discontinuous dynamic recrystallization (cDRX or dDRX). Pure copper was deformed to large strains by multi-directional forging at room temperature, resulting in an ultra-fine grained structure due to operation of cDRX. Subsequent annealing of such a fine-grained copper can be controlled mainly by grain growth accompanied with recovery and no texture change, that is continuous static recrystallization (cSRX). On the other hand, 4 kinds of static restoration processes operate during annealing of dDRXed copper, i.e. met

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Burlakov, E. O., and M. A. Nasonkina. "On connection between continuous and discontinuous neural field models with microstructure I. General theory." Tambov University Reports. Series: Natural and Technical Sciences 23, no. 121 (2018): 17–30. http://dx.doi.org/10.20310/1810-0198-2018-23-121-17-30.

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CHEN, B., Q. YUAN, J. H. FAN, J. G. WANG, and J. LUO. "FIBER-CONTINUOUS PILLAR-BOARD BIOCOMPOSITE STRUCTURE IN TUMBLEBUG ELYTRA." International Journal of Modern Physics B 24, no. 01n02 (2010): 191–200. http://dx.doi.org/10.1142/s0217979210064125.

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The observation of scanning electron microscope (SEM) showed that Tumblebug elytra consist of almost parallel upper and lower cuticles. Both of which are a kind of chitin-fiber-reinforced composite. There is a kind of chitin-fiber-reinforced composite pillars between the upper and lower cuticles, which support and connect the upper and lower cuticles uprightly. More careful observation showed that the chitin fibers in the pillars smoothly extend to the upper and lower composite cuticles forming a kind of fiber-continuous pillar-board composite (FCPBC) structure. Based on the observation, two k

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10

Arancio, M., C. Marchetti, G. Landi, et al. "A Rare Case of Female Splenogonadal Fusion." Urologia Journal 76, no. 2 (2009): 137–39. http://dx.doi.org/10.1177/039156030907600221.

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Splenogonadal fusion (SGF) is a rare congenital abnormality in which there is a fusion between spleen and gonad. Approximately 150 cases have been described in world literature. SGF can be continuous, where there is a connection between ectopic and orthotopic spleen, and discontinuous, with no connection. In our paper we report a case of SGF in a 36-year-old female with ultrasound and MR findings of space-occupying lesion in lower abdomen, and a review of the literature.

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Demirci, Emrah, Xiao Nan Hou, Memiş Acar, Behnam Pourdeyhimi, and Vadim V. Silberschmidt. "Numerical Modelling of Thermally Bonded Nonwovens: Continuous and Discontinuous Approaches." Solid State Phenomena 188 (May 2012): 164–69. http://dx.doi.org/10.4028/www.scientific.net/ssp.188.164.

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Nonwoven fabrics are web structures of randomly-oriented fibres, bonded by means of mechanical, thermal or chemical techniques. This paper focuses on nonwovens manufactured with polymer-based fibres and bonded thermally. During thermal bonding of such fibres, as a hot calender with an engraved pattern contacts the fibre web, bond spots are formed by melting of the polymer material. As a result of this bonding process, a pattern of bond points connected with randomly oriented polymer-based fibres form the nonwoven web. Due to their manufacturing-induced composite microstructure and random orien

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Liu, F. L., and K. M. Liew. "Vibration Analysis of Discontinuous Mindlin Plates by Differential Quadrature Element Method." Journal of Vibration and Acoustics 121, no. 2 (1999): 204–8. http://dx.doi.org/10.1115/1.2893965.

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A new numerical technique, the differential quadrature element method (DQEM), has been developed for solving the free vibration of the discontinuous Mindlin plate in this paper. By the DQEM, the complex plate domain is decomposed into small simple continuous subdomains (elements) and the differential quadrature method (DQM) is applied to each continuous subdomain to solve the problems. The detailed formulations for the DQEM and the connection conditions between each element are presented. Several numerical examples are analyzed to demonstrate the accuracy and applicability of this new method t

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Okuda, Takayuki. "Homogeneous space with non-virtually abelian discontinuous groups but without any proper SL(2, ℝ)-action". International Journal of Mathematics 27, № 03 (2016): 1650018. http://dx.doi.org/10.1142/s0129167x1650018x.

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In the study of discontinuous groups for non-Riemannian homogeneous spaces, the idea of “continuous analogue” gives a powerful method (T. Kobayashi [Math. Ann. 1989]). For example, a semisimple symmetric space [Formula: see text] admits a discontinuous group which is not virtually abelian if and only if [Formula: see text] admits a proper [Formula: see text]-action (T. Okuda [J. Differ. Geom. 2013]). However, the action of discrete subgroups is not always approximated by that of connected groups. In this paper, we show that the theorem cannot be extended to general homogeneous spaces [Formula:

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Fahem, Kawther, Dhia Elhak Chariag, and Lassaad Sbita. "Performance evaluation of continuous and discontinuous pulse width modulation techniques for grid-connected PWM converter." International Transactions on Electrical Energy Systems 28, no. 10 (2018): e2609. http://dx.doi.org/10.1002/etep.2609.

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Ion, Stelian, Dorin Marinescu, and Stefan-Gicu Cruceanu. "Riemann Problem for Shallow Water Equation with Vegetation." Analele Universitatii "Ovidius" Constanta - Seria Matematica 26, no. 2 (2018): 145–73. http://dx.doi.org/10.2478/auom-2018-0023.

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Abstract We investigate the existence of the solution of the Riemann Problem for a simplified water ow model on a vegetated surface - system of shallow water type equations. It is known that the system with discontinuous topography is non-conservative even if the porosity is absent. A system with continuous topography and discontinuous porosity is also non-conservative. In order to define Riemann solution for such systems, it is necessary to introduce a family of paths that connects the states defining the Riemann Problem. We focus our attention towards choosing such a family based on physical

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Cupal, Jan, Stephan Kopp, and Peter F. Stadler. "RNA Shape Space Topology." Artificial Life 6, no. 1 (2000): 3–23. http://dx.doi.org/10.1162/106454600568294.

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The distinction between continuous and discontinuous transitions is a long-standing problem in the theory of evolution. Because continuity is a topological property, we present a formalism that treats the space of phenotypes as a (finite) topological space, with a topology that is derived from the probabilities with which one phenotype is accessible from another through changes at the genotypic level. The shape space of RNA secondary structures is used to illustrate this approach. We show that evolutionary trajectories are continuous if and only if they follow connected paths in phenotype spac

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17

Behrens, Bernd Arno, A. Erman Tekkaya, Klaus Georg Kosch, Annika Foydl, Matthias Kammler, and Andreas Jäger. "Manufacturing of Steel-Reinforced Aluminum Parts by Co-Extrusion and Subsequent Forging." Key Engineering Materials 585 (December 2013): 149–56. http://dx.doi.org/10.4028/www.scientific.net/kem.585.149.

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The processes of manufacturing continuously and discontinuously steel-reinforced aluminum profiles by means of co-extrusion and subsequent forging were examined. In the co-extrusion and subsequent forging of discontinuously reinforced parts, influences of the reinforcing elements on forming behavior and material bonding for both processes were investigated. It was shown that forming temperature as well as ram speed have no influence on joining quality and forming behavior of the reinforcing elements in the co-extrusion of continuously reinforced profiles. The analyses of the joining zone betwe

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Jonuzi, Asmir, Nusret Popović, Zlatan Zvizdić, et al. "A rare case of discontinuous type splenogonadal fusion in a 13 year old boy: a case report and review of literature." International Surgery Journal 7, no. 10 (2020): 3438. http://dx.doi.org/10.18203/2349-2902.isj20204150.

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Splenogonadal fusion (SGF) is a rare developmental anomaly in which an abnormal connection between the splenic tissue and gonads or mesonephric derivatives is present. This entity often presents with scrotal mass, inguinal hernia, or cryptorchidism. Less than 200 cases have been reported since it was first described in 1883. It can be of continuous and discontinuous type based on the presence of a band of connecting splenic tissue. Report a rare case of discontinuous type of SGF in an adolescent male presenting as nonpalpable testis. On evaluation, ultrasonography (USG) and magnetic resonance

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PANAGIOTOU, KONSTANTINOS, RETO SPÖHEL, ANGELIKA STEGER, and HENNING THOMAS. "Explosive Percolation in Erdős–Rényi-Like Random Graph Processes." Combinatorics, Probability and Computing 22, no. 1 (2012): 133–45. http://dx.doi.org/10.1017/s0963548312000442.

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The study of the phase transition of random graph processes, and recently in particular Achlioptas processes, has attracted much attention. Achlioptas, D'Souza and Spencer (Science, 2009) gave strong numerical evidence that a variety of edge-selection rules in Achlioptas processes exhibit a discontinuous phase transition. However, Riordan and Warnke (Science, 2011) recently showed that all these processes have a continuous phase transition.In this work we prove discontinuous phase transitions for three random graph processes: all three start with the empty graph on n vertices and, depending on

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20

Simpson, David J. W. "Unfolding Codimension-Two Subsumed Homoclinic Connections in Two-Dimensional Piecewise-Linear Maps." International Journal of Bifurcation and Chaos 30, no. 03 (2020): 2030006. http://dx.doi.org/10.1142/s0218127420300062.

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For piecewise-linear maps, the phenomenon that a branch of a one-dimensional unstable manifold of a periodic solution is completely contained in its stable manifold is codimension-two. Unlike codimension-one homoclinic corners, such “subsumed” homoclinic connections can be associated with stable periodic solutions. The purpose of this paper is to determine the dynamics near a generic subsumed homoclinic connection in two dimensions. Assuming the eigenvalues associated with the periodic solution satisfy [Formula: see text], in a two-parameter unfolding there exists an infinite sequence of rough

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Feng, Z., and Xun Chen. "Grinding Wheel Loading Features Extracted by Image Processing." Key Engineering Materials 304-305 (February 2006): 14–18. http://dx.doi.org/10.4028/www.scientific.net/kem.304-305.14.

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The paper presents a method that identifies and extracts features of chips on loading grinding wheel using image processing technology. The Sobel operator is adopted to detect chips edge. The segmenting threshold was obtained by applying Otsu's method. Image dilation connects the discontinuous segments to yield continuous and close shapes of chips. Erosion removes the noise from the image. The different optical characters between metal chips and abrasive grains are analysed. The ratios of chips are calculated and displayed to monitor the wheel surface working status. The toolbox of the MATLAB

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22

Chen, Huann-Sheng, Sarah Zeichner, Robert N. Anderson, David K. Espey, Hyune-Ju Kim, and Eric J. Feuer. "The Joinpoint-Jump and Joinpoint-Comparability Ratio Model for Trend Analysis with Applications to Coding Changes in Health Statistics." Journal of Official Statistics 36, no. 1 (2020): 49–62. http://dx.doi.org/10.2478/jos-2020-0003.

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AbstractAnalysis of trends in health data collected over time can be affected by instantaneous changes in coding that cause sudden increases/decreases, or “jumps,” in data. Despite these sudden changes, the underlying continuous trends can present valuable information related to the changing risk profile of the population, the introduction of screening, new diagnostic technologies, or other causes. The joinpoint model is a well-established methodology for modeling trends over time using connected linear segments, usually on a logarithmic scale. Joinpoint models that ignore data jumps due to co

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Horvath, Kristian, Yuh-Lang Lin, and Branka Ivančan-Picek. "Classification of Cyclone Tracks over the Apennines and the Adriatic Sea." Monthly Weather Review 136, no. 6 (2008): 2210–27. http://dx.doi.org/10.1175/2007mwr2231.1.

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Abstract Cyclones that appear in the Adriatic Sea basin strongly influence the climate and weather conditions in the area. In particular, apart from the usually mild climate, cyclone activity in the Adriatic and the central Mediterranean Sea provide both the main hydrological forcing and the trigger mechanisms for a range of extreme weather phenomena. Therefore, a basic understanding of the cyclogenesis over the Adriatic Sea is essential. In particular, the classification of different types of cyclogenesis in the area is fundamental because it will help the understanding and prediction of the

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Beer, Gerald. "Topological Completeness of Function Spaces Arising in the Hausdorff Approximation of Functions." Canadian Mathematical Bulletin 35, no. 4 (1992): 439–48. http://dx.doi.org/10.4153/cmb-1992-058-1.

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AbstractLet X be a complete metric space. Viewing continuous real functions on X as closed subsets of X × R, equipped with Hausdorff distance, we show that C(X, R) is completely metrizable provided X is complete and sigma compact. Following the Bulgarian school of constructive approximation theory, a bounded discontinuous function may be identified with its completed graph, the set of points between the upper and lower envelopes of the function. We show that the space of completed graphs, too, is completely metrizable, provided X is locally connected as well as sigma compact and complete. In t

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Albalawi, Hani, and Sherif Zaid. "An H5 Transformerless Inverter for Grid Connected PV Systems with Improved Utilization Factor and a Simple Maximum Power Point Algorithm." Energies 11, no. 11 (2018): 2912. http://dx.doi.org/10.3390/en11112912.

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Due to their small size, minimum cost, and great efficiency, photovoltaic (PV) grid-connected transformerless inverters have been developed and become famous around the world in distributed PV generators systems. One of the most efficient topologies of the transformerless inverter family is H5 topology. This inverter extracts a discontinuous current from the PV panel, which conflicts with the operation at maximum power point tracking (MPPT) conditions while the utilization factor of the PV degrades. This paper proposes improved H5 topology featuring a boost converter inserted in the middle bet

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Li, Qiyu, Hongwei Zhou, Jiansong Zhang, Shengdun Zhao, and Jingfeng Lu. "A Virtual Negative Resistor Based Common Mode Current Resonance Suppression Method for Three-Level Grid-Tied Inverter with Discontinuous PWM." Energies 13, no. 7 (2020): 1595. http://dx.doi.org/10.3390/en13071595.

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The output LC filter of a photovoltaic (PV) string three-level grid-tied inverter that connects the filter capacitor neutral point to dc-link capacitor neutral point can reduce the common-mode (CM) current injected to the grid by letting the CM current circulate within the inverter. However, the internal CM current may resonate because of the existence of the resonant frequency of the internal CM LC circuit. Compared with the traditional continuous pulse-width modulation (CPWM), the resonance can be worse if discontinuous pulse-width modulation (DPWM) is applied, for the zero sequence quantity

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Becher, Simon, and Gunar Matthies. "Variational time discretizations of higher order and higher regularity." BIT Numerical Mathematics 61, no. 3 (2021): 721–55. http://dx.doi.org/10.1007/s10543-021-00851-6.

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AbstractWe consider a family of variational time discretizations that are generalizations of discontinuous Galerkin (dG) and continuous Galerkin–Petrov (cGP) methods. The family is characterized by two parameters. One describes the polynomial ansatz order while the other one is associated with the global smoothness that is ensured by higher order collocation conditions at both ends of the subintervals. Applied to Dahlquist’s stability problem, the presented methods provide the same stability properties as dG or cGP methods. Provided that suitable quadrature rules of Hermite type are used to ev

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Cao, Taiqiang, Fang You, Fei Zhang, Ping Yang, Qian Luo, and Jun Wang. "DSP-Based Control of Tri-State Boost PFC Converter with High Input Power Factor for Wide Range of Load Variations." Journal of Circuits, Systems and Computers 24, no. 05 (2015): 1550072. http://dx.doi.org/10.1142/s0218126615500723.

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Tri-state boost power factor correction (PFC) converter operating in pseudo-continuous-conduction mode (PCCM) is analyzed in this paper. The connection of power switch in parallel with inductor makes the boost converter operate in PCCM, which provides an additional degree of control freedom by inductor current freewheeling operation mode. Compared with boost PFC converter operating in continuous conduction mode (CCM) and discontinuous conduction mode (DCM), tri-state boost PFC converter extends the load range and is therefore more suitable for wide range of load variation. However, for univers

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Su, Zhanzhan, Zhengqiang Zhu, Yifu Zhang, Hua Zhang, and Qiankun Xiao. "Recrystallization Behavior of a Pure Cu Connection Interface with Ultrasonic Welding." Metals 11, no. 1 (2020): 61. http://dx.doi.org/10.3390/met11010061.

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Three-dimensional metal waveguide components are key components in the next generation of radio telescopes. Ultrasonic additive manufacturing technology combining ultrasonic welding and micro electrical discharge machining (micro-EDM) provides a new method for the overall manufacturing of waveguide elements, and the effective welding of Electrolytic Tough Pitch copper (Cu-ETP) sheets is the key process of this method. This study demonstrates that the orthogonal test optimization method is used to conduct ultrasonic welding tests on Cu-ETP. Specifically, electron backscattered diffraction (EBSD

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Mandrioli, Riccardo, Aleksandr Viatkin, Manel Hammami, Mattia Ricco, and Gabriele Grandi. "A Comprehensive AC Current Ripple Analysis and Performance Enhancement via Discontinuous PWM in Three-Phase Four-Leg Grid-Connected Inverters." Energies 13, no. 17 (2020): 4352. http://dx.doi.org/10.3390/en13174352.

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A complete analysis of the ac output current ripple in four-leg voltage source inverters considering multiple modulation schemes is provided. In detail, current ripple envelopes and peak-to-peak profiles have been determined in the whole fundamental period and a comprehensive method providing the current ripple rms has been achieved, all of them as a function of the modulation index. These characteristics have been determined for both phase and neutral currents, considering the most popular common-mode injection schemes. Particular attention has been paid to the performance of discontinuous pu

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Thommeret, N., J. S. Bailly, and C. Puech. "Robust extraction of thalwegs network from DTM: application on badlands." Hydrology and Earth System Sciences Discussions 7, no. 1 (2010): 879–905. http://dx.doi.org/10.5194/hessd-7-879-2010.

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Abstract. This paper presents methods to extract badlands thalwegs network from regular grid DTM by combining terrain morphology indices to a drainage algorithm. The computation of a continuous vector network will permit the study of the badlands spatial patterns. These methods aim at delineating a thalweg only where the DTM denotes a significant curvature with respect to DTM accuracy. It relies on three major steps. Firstly, discontinuous concave areas are detected from the DTM using morphological criteria; the plan curvature and the convergence index. Secondly, the concave areas are connecte

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Rudenko, Yu V. "MODELING OF PROCESSES ON THE BASIS OF STATE SPACE AVERAGING IN BOOST CONVERTER WITH MAGNETICALLY COUPLED ELEMENTS." Praci Institutu elektrodinamiki Nacionalanoi akademii nauk Ukraini 2021, no. 58 (2021): 44–54. http://dx.doi.org/10.15407/publishing2021.58.044.

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The features of the state-space average method using Lagrange's theorems for calculation of processes in the boost converter with magnetically coupled elements (with autotransformer connection of inductors) in continuous currents mode are considered. A mathematical model of the converter based on relative variables has been developed, which makes it possible to calculate processes in a wide range of parameters taking into account the degree of magnetic coupling between inductive elements, including the definition of constant and pulsating components. It is shown that to obtain a complete syste

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Baklouti, A., N. Elaloui, and I. Kedim. "The Selberg–Weil–Kobayashi rigidity theorem: The rank one solvable case." International Journal of Mathematics 27, no. 10 (2016): 1650085. http://dx.doi.org/10.1142/s0129167x16500853.

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A local rigidity theorem was proved by Selberg and Weil for Riemannian symmetric spaces and generalized by Kobayashi for a non-Riemannian homogeneous space [Formula: see text], determining explicitly which homogeneous spaces [Formula: see text] allow nontrivial continuous deformations of co-compact discontinuous groups. When [Formula: see text] is assumed to be exponential solvable and [Formula: see text] is a maximal subgroup, an analog of such a theorem states that the local rigidity holds if and only if [Formula: see text] is isomorphic to the group Aff([Formula: see text]) of affine transf

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Kawiecka, R., A. Krawczyk, P. Lewińska, et al. "Mining Activity and its Remains - The Possibilities of Obtaining, Analysing and Disseminating of Various Data on the Example of Miedzianka, Lower Silesia, Poland." Journal of Applied Engineering Sciences 8, no. 2 (2018): 65–72. http://dx.doi.org/10.2478/jaes-2018-0020.

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Abstract The article presents comprehensive documentation of the situation of post-mining Miedzianka village (former town), which is located in Lower Silesia, in south-western Poland. Due to the long-term expansive mining exploitation since the 14th century, over time Miedzianka was completely destroyed and depopulated, thus nowadays, only a few inhabitants live there. The basis for the conducted research area were changes in land and urban structure that have been occurring for centuries in connection with mining operation of copper and uranium. The authors focused on presenting the changes u

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Thommeret, N., J. S. Bailly, and C. Puech. "Extraction of thalweg networks from DTMs: application to badlands." Hydrology and Earth System Sciences 14, no. 8 (2010): 1527–36. http://dx.doi.org/10.5194/hess-14-1527-2010.

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Abstract. To study gully spatial patterns in the badlands using a continuous thalweg vector network, this paper presents methods to extract the badlands' thalweg network from a regular grid digital terrain model (DTM) by combining terrain morphology indices with a drainage algorithm. This method will delineate a thalweg only where the DTM denotes a significant curvature with respect to DTM accuracy and relies on three major steps. First, discontinuous concave areas were detected from the DTM using morphological criteria, either the plan curvature or the convergence index. Second, the concave a

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Al-Asbahi, Khaled Mohammed Moqbel. "Insights into the Semantics of Reduplication in English and Arabic." International Journal of English Linguistics 10, no. 1 (2020): 384. http://dx.doi.org/10.5539/ijel.v10n1p384.

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The paper aims to describe and compare the semantics of reduplication in English and Arabic. The paper shows more semantic similarities in reduplication than differences between both languages; although, Arabic reduplication is noted to be semantically more productive than English reduplication. Both languages divide reduplication into full/partial, free/bound, and continuous/discontinuous. Moreover, both languages share the senses of reduplication like; repetition, emphasis, intensity, onomatopoeia, contempt, affection, plurality, non-uniformity, and instability, nonsense, spread out, scatter

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Itoh, Makoto, and Leon O. Chua. "Parasitic Effects on Memristor Dynamics." International Journal of Bifurcation and Chaos 26, no. 06 (2016): 1630014. http://dx.doi.org/10.1142/s0218127416300147.

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In this paper, we show that parasitic elements have a significant effect on the dynamics of memristor circuits. We first show that certain [Formula: see text]-terminal elements such as memristors, memcapacitors, and meminductors can be used as nonvolatile memories, if the principle of conservation of state variables hold by open-circuiting, or short-circuiting, their terminals. We also show that a passive memristor with a strictly-increasing constitutive relation will eventually lose its stored flux when we switch off the power if there is a parasitic capacitance across the memristor. Similarl

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Ando, Kei, Kazuyoshi Kobayashi, Masaaki Machino, et al. "Connection of discontinuous segments in early functional recovery from thoracic ossification of the posterior longitudinal ligament treated with posterior instrumented surgery." Journal of Neurosurgery: Spine 32, no. 2 (2020): 200–206. http://dx.doi.org/10.3171/2019.8.spine19604.

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OBJECTIVEThe objective of this study was to investigate the relationship between morphological changes in thoracic ossification of the posterior longitudinal ligament (T-OPLL) and postoperative neurological recovery after thoracic posterior fusion surgery. Changes of OPLL morphology and postoperative recovery in cases with T-OPLL have not been examined.METHODSIn this prospective study, the authors evaluated data from 44 patients (23 male and 21 female) who underwent posterior decompression and fusion surgery with instrumentation for the treatment of T-OPLL at our hospital. The patients’ mean a

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Roth, Jenny, Michaela Huber, Annkatrin Juenger, and James H. Liu. "It’s about valence: Historical continuity or historical discontinuity as a threat to social identity." Journal of Social and Political Psychology 5, no. 2 (2017): 320–41. http://dx.doi.org/10.5964/jspp.v5i2.677.

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National identity is underpinned by historical representations. Recent research shows that narratives presenting an in-group’s history as discontinuous rather than continuous raise collective angst, suggesting that historical discontinuity threatens social identity. This previous research has focused on positive aspects of an in-group’s past. The present research aims to extend the findings to go beyond positive histories. We suggest that when the in-group’s actions in the past are presented as negative, historical continuity instead of discontinuity will increase perceived identity threat bec

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COOMBES, S., Y. M. LAI, M. ŞAYLI, and R. THUL. "Networks of piecewise linear neural mass models." European Journal of Applied Mathematics 29, no. 5 (2018): 869–90. http://dx.doi.org/10.1017/s0956792518000050.

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Neural mass models are ubiquitous in large-scale brain modelling. At the node level, they are written in terms of a set of ordinary differential equations with a non-linearity that is typically a sigmoidal shape. Using structural data from brain atlases, they may be connected into a network to investigate the emergence of functional dynamic states, such as synchrony. With the simple restriction of the classic sigmoidal non-linearity to a piecewise linear caricature, we show that the famous Wilson–Cowan neural mass model can be explicitly analysed at both the node and network level. The constru

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Sommer, J. R., T. High, P. Ingram, D. Kopf, R. Nassar, and I. Taylor. "Avian Extended Junctional SR: 3-D Geometry Rendered in Stereo." Microscopy and Microanalysis 3, S2 (1997): 247–48. http://dx.doi.org/10.1017/s1431927600008126.

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Extended junctional sarcoplasmic reticulum (EJSR) is an invariant differentiation of the sarcoplasmic reticulum (SR) in bird cardiac myocytes (CM) and central to excitation-contraction coupling (ECC). EJSR occurs as both continuous and discontinuous extensions of junctional sarcoplasmic reticulum (JSR), and surrounds and pervades the Z/I band as the “ EJSR Z-rete” whose geometry has mechanistic implications for the function of “couplings” in ECC, in general. “Peripheral coupling(s)” (PC) in birds, and the additional “interior coupling(s)” (IC) at transverse tubules (TT) in mammals, are formed

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Kadouri, Youssef, Damien Carnicelli, Hachem El Sayegh, Lounis Benslimane, and Yassine Nouini. "Pathogenesis, Diagnosis, and Management of Splenogonadal Fusion: A Literature Review." Case Reports in Urology 2020 (October 8, 2020): 1–7. http://dx.doi.org/10.1155/2020/8876219.

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Introduction. Splenogonadal fusion is a rare congenital anomaly, defined by the presence of ectopic splenic tissue caused by an abnormal connection between the spleen and the gonad or mesonephrotic derivatives during the embryonic period. Materials and Methods. By reporting an observational case and performing a review of the literature according to the CARE guidelines (using the PubMed database and guidelines from urology, general surgery, and pediatric learned societies), we present the embryological genesis of the splenogonadal fusion, the associated anatomical anomalies, and the diagnostic

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Delatorre, M., TS Vasconcelos, NL Cunha, et al. "Implementing new northernmost records to modelling the distribution of Hypsiboas caingua (Anura: Hylidae) in South America." Brazilian Journal of Biology 74, no. 4 (2014): 854–60. http://dx.doi.org/10.1590/1519-6984.05113.

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New northwestern records of the striped treefrog Hypsiboas caingua (Carrizo, 1991 “1990”) are presented for Brazil, extending its known geographic distribution approximately 115 km northward (linear distance) of the previous northernmost record of the species. In all new localities, individuals of H. caingua were only found in calling activity under temperatures below 18°C. The species appears to be associated with Atlantic Forest, although it had already been recorded in Cerrado. Although the scientific literature data suggests that H. caingua presents discontinuous geographical distribution,

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SHIN, JEONG WOO, and YOUNG-SHIN LEE. "DYNAMIC CRACK PROPAGATION IN A FUNCTIONALLY GRADED PIEZOELECTRIC INTERFACE LAYER BETWEEN TWO DISSIMILAR PIEZOELECTRIC LAYERS UNDER ELECTROMECHANICAL LOADING." International Journal of Modern Physics: Conference Series 06 (January 2012): 55–60. http://dx.doi.org/10.1142/s2010194512002930.

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The dynamic propagation of a crack in a functionally graded piezoelectric material (FGPM) interface layer between two dissimilar piezoelectric layers under anti-plane shear is analyzed using the integral transform approaches. The properties of the FGPM layers vary continuously along the thickness. FGPM layer and the two homogeneous piezoelectric layers are connected weak-discontinuously. A constant velocity Yoffe-type moving crack is considered. Numerical values on the dynamic energy release rate (DERR) are presented for the FGPM. Followings are helpful to increase of the resistance of the cra

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Green, Joseph, Daniel Ryckman, and Michael Cromer. "A Continuum Model for Complex Flows of Shear Thickening Colloidal Solutions." Fluids 4, no. 1 (2019): 21. http://dx.doi.org/10.3390/fluids4010021.

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Colloidal shear thickening fluids (STFs) have applications ranging from commercial use to those of interest to the army and law enforcement, and the oil industry. The theoretical understanding of the flow of these particulate suspensions has predominantly been focused through detailed particle simulations. While these simulations are able to accurately capture and predict the behavior of suspensions in simple flows, they are not tractable for more complex flows such as those occurring in applications. The model presented in this work, a modification of an earlier constitutive model by Stickel

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Brennand, T. A., and D. R. Sharpe. "Ice-sheet dynamics and subglacial meltwater regime inferred from form and sedimentology of glaciofluvial systems: Victoria Island, District of Franklin, Northwest Territories." Canadian Journal of Earth Sciences 30, no. 5 (1993): 928–44. http://dx.doi.org/10.1139/e93-078.

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On Victoria Island, tunnel channels, eskers, and associated fans and extended deposits together constitute channelized glaciofluvial systems. Flutes and drumlinoid ridges, interpreted as residuals left by erosive, catastrophic, subglacial meltwater sheet flows, lie adjacent to these systems. One tunnel channel is described in detail. It exhibits deep scours, a discontinuous thalweg, sculpted margins, and flutes on the downflow side of one wall, features indicative of complex flow and possibly several flow events. The tunnel channel is interpreted as the product of erosion by catastrophic, subg

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Köhler, Peter, Christoph Nehrbass-Ahles, Jochen Schmitt, Thomas F. Stocker, and Hubertus Fischer. "A 156 kyr smoothed history of the atmospheric greenhouse gases CO<sub>2</sub>, CH<sub>4</sub>, and N<sub>2</sub>O and their radiative forcing." Earth System Science Data 9, no. 1 (2017): 363–87. http://dx.doi.org/10.5194/essd-9-363-2017.

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Abstract. Continuous records of the atmospheric greenhouse gases (GHGs) CO2, CH4, and N2O are necessary input data for transient climate simulations, and their associated radiative forcing represents important components in analyses of climate sensitivity and feedbacks. Since the available data from ice cores are discontinuous and partly ambiguous, a well-documented decision process during data compilation followed by some interpolating post-processing is necessary to obtain those desired time series. Here, we document our best possible data compilation of published ice core records and recent

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Cai, Qing, Mahardhika Pratama, and Sameer Alam. "Interdependency and Vulnerability of Multipartite Networks under Target Node Attacks." Complexity 2019 (November 20, 2019): 1–16. http://dx.doi.org/10.1155/2019/2680972.

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Complex networks in reality may suffer from target attacks which can trigger the breakdown of the entire network. It is therefore pivotal to evaluate the extent to which a network could withstand perturbations. The research on network robustness has proven as a potent instrument towards that purpose. The last two decades have witnessed the enthusiasm on the studies of network robustness. However, existing studies on network robustness mainly focus on multilayer networks while little attention is paid to multipartite networks which are an indispensable part of complex networks. In this study, w

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Liu, H. C., G. J. He, X. M. Zhang, W. Jiang, and S. G. Ling. "Spatiotemporal Mining of Time-Series Remote Sensing Images Based on Sequential Pattern Mining." ISPRS Annals of Photogrammetry, Remote Sensing and Spatial Information Sciences II-4/W2 (July 10, 2015): 111–18. http://dx.doi.org/10.5194/isprsannals-ii-4-w2-111-2015.

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With the continuous development of satellite techniques, it is now possible to acquire a regular series of images concerning a given geographical zone with both high accuracy and low cost. Research on how best to effectively process huge volumes of observational data obtained on different dates for a specific geographical zone, and to exploit the valuable information regarding land cover contained in these images has received increasing interest from the remote sensing community. In contrast to traditional land cover change measures using pair-wise comparisons that emphasize the compositional

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Park, Hyun Jin, Kyu-Lim Lee, Young-Chun Gil, Ji-Hyun Lee, Kyung-Seok Hu, and Hee-Jin Kim. "Sonographic Analysis of the Upper Labial Orbicularis Oris and Its Clinical Implications." Aesthetic Surgery Journal 40, no. 7 (2019): 778–83. http://dx.doi.org/10.1093/asj/sjz341.

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Abstract Background Purse string lips, which include the vertical wrinkles over the lips, are frequently observed in aged individuals. Botulinum toxin and fillers are routinely injected into these areas to remove the wrinkles; however, the anatomy of the orbicularis oris muscle (OOr) near the vermilion border area has not been well defined. Objectives The aim of this study was therefore to identify any morphological differences of the upper OOr via sonographic imaging. Methods The upper lip muscles as observed utilizing an ultrasound device were divided into 2 muscles (pars peripheralis and pa

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