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Journal articles on the topic 'Hill function'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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1

Sun, Menghan, and Hui Qi. "Scattering of Antiplane SH Waves by Complex Landforms." Shock and Vibration 2021 (August 5, 2021): 1–21. http://dx.doi.org/10.1155/2021/9997230.

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The multiple scattering of SH waves by isosceles triangular hill, semicircle depression, and isosceles trapezoidal hill in the solid half-space is studied. The complex model is divided into multiple subdomains by using the region matching method, then the wave functions in each subdomain are constructed by using the fractional-order Bessel function, and finally, the infinite algebraic equations for solving the unknown coefficients in the wave function are established by using the multipolar coordinate technique and the complex function method according to the boundary conditions. Fourier serie
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2

Liu, Hu, and Wang. "Large Eddy Simulations of the Flow Fields over Simplified Hills with Different Roughness Conditions, Slopes, and Hill Shapes: A Systematical Study." Energies 12, no. 18 (September 4, 2019): 3413. http://dx.doi.org/10.3390/en12183413.

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Turbulent flow fields over topographies are important in the area of wind energy. The roughness, slope, and shape of a hill are important parameters affecting the flow fields over topographies. However, these effects are always examined separately. The systematic investigations of these effects are limited, the coupling between these effects is still unrevealed, and the turbulence structures as a function of these effects are still unclear. Therefore, in the present study, the flow fields over twelve simplified isolated hills with different roughness conditions, slopes, and hill shapes are exa
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Yang, Rui, Ting Ting Wang, and Wei Wei Xia. "Research of Influence of Obstacles on Three-Dimensional Hill Wind Field." Applied Mechanics and Materials 448-453 (October 2013): 1712–15. http://dx.doi.org/10.4028/www.scientific.net/amm.448-453.1712.

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At different wind speeds, in order to study the impact of obstacle size and distance to the bottom of the hill on wind farm, using Pro / E generates the model of hills and upstream obstacle, sinusoidal model was selected to the hill contour, then Fluent was adopted to analyze the flow field, turbulence model select the SSK k-ω, inlet boundary condition was exponential function. Wind speed distribution and wind pressure distribution of hill surface at each case were depicted by the simulation results; the obstacle of conducive for wind farms was obtained by comparing flow field distribution of
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4

Gonze, Didier, and Wassim Abou-Jaoudé. "The Goodwin Model: Behind the Hill Function." PLoS ONE 8, no. 8 (August 1, 2013): e69573. http://dx.doi.org/10.1371/journal.pone.0069573.

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5

Gulayeva, N. M., and S. A. Yaremko. "EXPERIMENTAL ANALYSIS OF MULTINATIONAL GENETIC ALGORITHM AND ITS MODIFICATIONS." Radio Electronics, Computer Science, Control, no. 2 (July 3, 2021): 71–83. http://dx.doi.org/10.15588/1607-3274-2021-2-8.

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Context. Niching genetic algorithms are one of the most popular approaches to solve multimodal optimization problems. When classifying niching genetic algorithms it is possible to select algorithms explicitly analyzing topography of fitness function landscape; multinational genetic algorithm is one of the earliest examples of these algorithms. Objective. Development and analysis of the multinational genetic algorithm and its modifications to find all maxima of a multimodal function. Method. Experimental analysis of algorithms is carried out. Numerous runs of algorithms on well-known test probl
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6

LIKHOSHVAI, VITALI, and ALEXANDER RATUSHNY. "GENERALIZED HILL FUNCTION METHOD FOR MODELING MOLECULAR PROCESSES." Journal of Bioinformatics and Computational Biology 05, no. 02b (April 2007): 521–31. http://dx.doi.org/10.1142/s0219720007002837.

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Development of an in silico cell is an urgent task of systems biology. The core of this cell should consist of mathematical models of intracellular events, including enzymatic reactions and control of gene expression. For example, the minimal model of the E. coli cell should include description of about one thousand enzymatic reactions and regulation of expression of approximately the same number of genes. In many cases detailed mechanisms of molecular processes are not known. In this study, we propose a generalized Hill function method for modeling molecular events. The proposed approach is a
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7

Peng, Xing Qian, and Ling Lin Shi. "Analysis of Wind Load Effect on the Roof of Low-Rise Building in the Mountain Terrain." Advanced Materials Research 382 (November 2011): 176–82. http://dx.doi.org/10.4028/www.scientific.net/amr.382.176.

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The wind conditions of the low-rise building in the mountain terrain are different because they have the characteristics of different landforms. When the typhoon comes, the possibility of structural damage is increasing by the negative effects of wind in the special topography. By establishing a sine function of outline of the hill, this paper makes a CFD(Computational Fluid Dynamics) numerical simulation about the low-rise building around the hills with four different height. Using ANSYS-CFX software as calculating platform, it put forward the roof wind load effect of the Low-rise building by
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8

Vaughan, Diane E., Sheldon H. Jacobson, and Derek E. Armstrong. "A New Neighborhood Function for Discrete Manufacturing Process Design Optimization Using Generalized Hill Climbing Algorithms." Journal of Mechanical Design 122, no. 2 (March 1, 2000): 164–71. http://dx.doi.org/10.1115/1.533566.

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Discrete manufacturing process design optimization can be difficult, due to the large number of manufacturing process design sequences and associated input parameter setting combinations that exist. Generalized hill climbing algorithms have been introduced to address such manufacturing design problems. Initial results with generalized hill climbing algorithms required the manufacturing process design sequence to be fixed, with the generalized hill climbing algorithm used to identify optimal input parameter settings. This paper introduces a new neighborhood function that allows generalized hill
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9

Pérez-Correa, José Ricardo, Gastón Lefranc, and Mario Fernández-Fernández. "A New Application of the Hill Repressor Function: Automatic Control of a Conic Tank Level and Local Stability Analysis." Mathematical Problems in Engineering 2015 (2015): 1–6. http://dx.doi.org/10.1155/2015/271216.

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The Hill function is commonly used as a building block to model different dynamic patterns found in the response of genetic regulatory circuits within microorganisms and cells. These circuits are characterized by fast response and robustness against unmeasured disturbances. Therefore, microorganisms and cells can survive even if they are subjected to strong changes in their environment. However, as far as we know, the Hill function has not been used before to design process control systems. In this work, the repressor Hill function is applied to control the level of a conic tank. To eliminate
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10

Resnick, Sidney, and Cătălin Stărică. "Smoothing the Hill Estimator." Advances in Applied Probability 29, no. 01 (March 1997): 271–93. http://dx.doi.org/10.1017/s0001867800027889.

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For sequences of i.i.d. random variables whose common tail 1 – F is regularly varying at infinity wtih an unknown index –α < 0, it is well known that the Hill estimator is consistent for α–1 and usually asymptotically normally distributed. However, because the Hill estimator is a function of k = k(n), the number of upper order statistics used and which is only subject to the conditions k →∞, k/n → 0, its use in practice is problematic since there are few reliable guidelines about how to choose k. The purpose of this paper is to make the use of the Hill estimator more reliable through an
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Resnick, Sidney, and Cătălin Stărică. "Smoothing the Hill Estimator." Advances in Applied Probability 29, no. 1 (March 1997): 271–93. http://dx.doi.org/10.2307/1427870.

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For sequences of i.i.d. random variables whose common tail 1 – F is regularly varying at infinity wtih an unknown index –α < 0, it is well known that the Hill estimator is consistent for α–1 and usually asymptotically normally distributed. However, because the Hill estimator is a function of k = k(n), the number of upper order statistics used and which is only subject to the conditions k →∞, k/n → 0, its use in practice is problematic since there are few reliable guidelines about how to choose k. The purpose of this paper is to make the use of the Hill estimator more reliable through an ave
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12

Baxter, M. Aaron, Thomas F. Fahlen, Rebecca L. Wilson, and Bradley D. Jones. "HilE Interacts with HilD and Negatively Regulates hilA Transcription and Expression of the Salmonella enterica Serovar Typhimurium Invasive Phenotype." Infection and Immunity 71, no. 3 (March 2003): 1295–305. http://dx.doi.org/10.1128/iai.71.3.1295-1305.2003.

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ABSTRACT The ability of Salmonella enterica serovar Typhimurium to traverse the intestinal mucosa of a host is an important step in its ability to initiate gastrointestinal disease. The majority of the genes required for this invasive characteristic are encoded on Salmonella pathogenicity island 1 (SPI1), and their expression is controlled by the transcriptional activator HilA, a member of the OmpR/ToxR family of proteins. A variety of genes (hilC, hilD, fis, sirA/barA, csrAB, phoB, fadD, envZ/ompR, fliZ, hilE, ams, lon, pag, and hha) have been identified that exert positive or negative effect
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13

Neale, K. W., and E. Chater. "General Solutions for the Inelastic Behavior of Pressurized Membranes." Journal of Applied Mechanics 54, no. 2 (June 1, 1987): 269–74. http://dx.doi.org/10.1115/1.3173006.

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The small-deflection behavior of inelastic membranes supported along arbitrary contours and subjected to lateral pressure is considered. Hill and Stora˚kers’ (1980) solution for isotropic power-law hardening membranes is extended to a wide class of anisotropic material response. Applications to circular membranes are given for anisotropic materials characterized by Budiansky’s (1984) general transversely isotropic yield function. Specific results corresponding to the yield functions proposed by Hill (1979) and Bassani (1977) are also presented.
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14

Ko, Sanghoon, and Sundaram Gunasekaran. "Analysis of cheese melt profile using inverse-Hill function." Journal of Food Engineering 87, no. 2 (July 2008): 266–73. http://dx.doi.org/10.1016/j.jfoodeng.2007.12.002.

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15

Qi, Hui, Jing Guo, and Jie Yang. "The Ground Motion of Isosceles Triangular Hill in Right-Angle Plane Impacted by SH-Wave." Applied Mechanics and Materials 121-126 (October 2011): 2363–66. http://dx.doi.org/10.4028/www.scientific.net/amm.121-126.2363.

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The analytical solution to the problem of the scattering of SH-wave by isosceles triangular hill in right-angle plane is given by using the methods of complex function and multiple coordinate. Firstly, the solution region is divided into two domains, where domain I involves isosceles triangular hill and a semi-circular bottom, domain II involves a semi-circular hollow in right-angle plane. And a standing wave function is constructed which satisfies the zero-stress conditions at the triangular wedges. In domain II, the scattering wave functions which satisfy the stress free boundary conditions
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16

Ziraldo, Riccardo, and Lan Ma. "Computing intrinsic noise of the genetic regulation modeled by Hill functions." Journal of Computational Systems Biology 3, no. 1 (December 2018): 1–15. http://dx.doi.org/10.15744/2455-7625.3.101.

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Intrinsic noise embedded in stochastic gene regulation due to low copy number of species has been studied using the approach of theoretical modeling and computational simulation, including the standard methods of stochastic simulation algorithm (SSA) and linear noise approximation (LNA). At average cell level, Hill functions are widely used as a compact format to represent gene regulation involving multi-transcription-factor binding and cooperativity. Heuristic SSA and LNA methods (hSSA and hLNA) have been applied to study stochastic models employing Hill functions. It is however unclear which
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17

Lichtenberger, Achim, Torben Schreiber, and Mkrtich H. Zardaryan. "First Results and Perspectives of a New Archaeological Project in the Armenian Capital Artaxata: From Artashes-Artaxias I to Roman Imperialism." Electrum 28 (2021): 245–76. http://dx.doi.org/10.4467/20800909el.21.016.13374.

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The paper deals with the first results of the Armenian-German Artaxata Project which was initiated in 2018. The city of Artaxata was founded in the 2nd century BC as the capital of the Artaxiad kingdom. The city stretches over the 13 hills of the Khor Virap heights and the adjacent plain in the Ararat valley. The new project focusses on Hill XIII and the Lower city to the south and the north of it. This area was investigated by magnetic prospections in 2018 and on the basis of its results, in total eleven 5 × 5 m trenches were excavated in 2019. On the eastern part of Hill XIII several structu
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18

Lo, Gane Samb. "Asymptotic behavior of Hill's estimate and applications." Journal of Applied Probability 23, no. 4 (December 1986): 922–36. http://dx.doi.org/10.2307/3214466.

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The problem of estimating the exponent of a stable law is receiving an increasing amount of attention because Pareto's law (or Zipf's law) describes many biological phenomena very well (see e.g. Hill (1974)). This problem was first solved by Hill (1975), who proposed an estimate, and the convergence of that estimate to some positive and finite number was shown to be a characteristic of distribution functions belonging to the Fréchet domain of attraction (Mason (1982)). As a contribution to a complete theory of inference for the upper tail of a general distribution function, we give the asympto
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19

Lo, Gane Samb. "Asymptotic behavior of Hill's estimate and applications." Journal of Applied Probability 23, no. 04 (December 1986): 922–36. http://dx.doi.org/10.1017/s0021900200116109.

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The problem of estimating the exponent of a stable law is receiving an increasing amount of attention because Pareto's law (or Zipf's law) describes many biological phenomena very well (see e.g. Hill (1974)). This problem was first solved by Hill (1975), who proposed an estimate, and the convergence of that estimate to some positive and finite number was shown to be a characteristic of distribution functions belonging to the Fréchet domain of attraction (Mason (1982)). As a contribution to a complete theory of inference for the upper tail of a general distribution function, we give the asympto
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20

Lo, Gane Samb. "Asymptotic behavior of Hill's estimate and applications." Journal of Applied Probability 23, no. 04 (December 1986): 922–36. http://dx.doi.org/10.1017/s0021900200118716.

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The problem of estimating the exponent of a stable law is receiving an increasing amount of attention because Pareto's law (or Zipf's law) describes many biological phenomena very well (see e.g. Hill (1974)). This problem was first solved by Hill (1975), who proposed an estimate, and the convergence of that estimate to some positive and finite number was shown to be a characteristic of distribution functions belonging to the Fréchet domain of attraction (Mason (1982)). As a contribution to a complete theory of inference for the upper tail of a general distribution function, we give the asympto
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21

Meehan, John F. "The Morgan Hill Earthquake of April 24, 1984—Effects on Hospitals and Public School Buildings." Earthquake Spectra 1, no. 3 (May 1985): 575–77. http://dx.doi.org/10.1193/1.1585278.

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Two hospitals constructed under the provisions of the Hospital Act and six public school buildings constructed under the provisions of the Field Act were investigated following the Morgan Hill earthquake and all were observed to have performed quite well during the Morgan Hill earthquake. Maintaining function in hospitals in an important aspect of the Hospital Act; neither of the two hospitals inspected suffered any loss of function.
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22

Shi, Wen Pu. "Scattering of SH-Waves to Semi-Cylindrical Canyon and Rectangular Elastic Hill on the Ground." Advanced Materials Research 610-613 (December 2012): 2544–51. http://dx.doi.org/10.4028/www.scientific.net/amr.610-613.2544.

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Wave function expansion method and Green function method were employed to study thescattering problem of SH-waves to the semi-cylindrical canyon and rectangular hill on the gr ound. First, the displacements in the half space and rectangular hill were given which can santisfy the stress-free conditions on the free boundaries. Then, the first kind of Fredholm integration equation of the unknown distribution stress was obtained by using the displacement conditions on the common boundary between the half-space and the rectangular hill, and Gauss-Legendre integration formula was used to solve the e
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23

Shenk, D., D. Schenk, and M. A. Shubin. "Asymptotic expansion of the spectral function of the Hill operator." Functional Analysis and Its Applications 20, no. 1 (1986): 78–79. http://dx.doi.org/10.1007/bf01077328.

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24

Henrickson, Sarah E. "Is your immune system over the hill?" Science Immunology 4, no. 35 (May 3, 2019): eaax8198. http://dx.doi.org/10.1126/sciimmunol.aax8198.

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25

Elaraby, Ahmed, and Ismail Elansary. "A Framework for Multi-Threshold Image Segmentation of Low Contrast Medical Images." Traitement du Signal 38, no. 2 (April 30, 2021): 309–14. http://dx.doi.org/10.18280/ts.380207.

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Accurate medical images segmentation plays a vital role in contouring during diagnosis and treatment planning. To improve the segmentation accuracy in low contrast images, we propose a method by combining Hill entropy and fuzzy c-partition. Here, using membership function, an image is first transformed into fuzzy domain. Subsequently, the fuzzy Hill entropies are defined for foreground (object) and background. Next, the total fuzzy Hill entropy is maximized to compute the accurate threshold; this process is employed to calculate a proper parameter combination of membership function. This Hill
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Meyer, Karin, and Mark Kirkpatrick. "Up hill, down dale: quantitative genetics of curvaceous traits." Philosophical Transactions of the Royal Society B: Biological Sciences 360, no. 1459 (July 7, 2005): 1443–55. http://dx.doi.org/10.1098/rstb.2005.1681.

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‘Repeated’ measurements for a trait and individual, taken along some continuous scale such as time, can be thought of as representing points on a curve, where both means and covariances along the trajectory can change, gradually and continually. Such traits are commonly referred to as ‘function-valued’ (FV) traits. This review shows that standard quantitative genetic concepts extend readily to FV traits, with individual statistics, such as estimated breeding values and selection response, replaced by corresponding curves, modelled by respective functions. Covariance functions are introduced as
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27

Loha, J., and S. Das. "Function and Application of GIS in Precision Agriculture at Darjeeling Hill." International Journal of Computer Sciences and Engineering 6, no. 11 (November 30, 2018): 749–52. http://dx.doi.org/10.26438/ijcse/v6i11.749752.

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28

Wood, Brandon M., and Steven J. Albrechtsen. "Power Development in Hill Climbing as a Function of Bicycle Weight." Medicine & Science in Sports & Exercise 40, Supplement (May 2008): S42. http://dx.doi.org/10.1249/01.mss.0000321631.79521.d0.

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29

Ehsan Elahi, Faizan, and Ammar Hasan. "A method for estimating Hill function-based dynamic models of gene regulatory networks." Royal Society Open Science 5, no. 2 (February 2018): 171226. http://dx.doi.org/10.1098/rsos.171226.

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Gene regulatory networks (GRNs) are quite large and complex. To better understand and analyse GRNs, mathematical models are being employed. Different types of models, such as logical, continuous and stochastic models, can be used to describe GRNs. In this paper, we present a new approach to identify continuous models, because they are more suitable for large number of genes and quantitative analysis. One of the most promising techniques for identifying continuous models of GRNs is based on Hill functions and the generalized profiling method (GPM). The advantage of this approach is low computat
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30

Scheeres, D. J. "Hill Stability of Configurations in the Full N-Body Problem." Proceedings of the International Astronomical Union 10, S318 (August 2015): 128–34. http://dx.doi.org/10.1017/s174392131500719x.

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AbstractRigorous results on Hill Stability for the classical N-body problem are in general unknown for N ≥ 3, due to the complex interactions that may occur between bodies and the many different outcomes which may occur. However, the addition of finite density for the bodies along with a rigidity assumption on their mass distribution allows for Hill stability to be easily established. In this note we generalize results on Hill stability developed for the Full 3-body problem and show that it can be applied to the Full N-body problem. Further, we find that Hill Stability concepts can be applied
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Dharampal, Navjit, and Ralph W. Aye. "Hill Repair—Why It Is Still Relevant and Should Be Taught." Foregut: The Journal of the American Foregut Society 1, no. 2 (June 2021): 185–89. http://dx.doi.org/10.1177/26345161211025718.

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The Hill repair for gastroesophageal reflux disease, though effective, durable, and in some regards a superior repair, has unfortunately seen less widespread adoption in the laparoscopic era relative to Nissen and Toupet fundoplications. Some purported objections to the Hill repair include conceptual and technical barriers, need for intraoperative manometry, and lack of clear-cut advantages. However, it has proven to be remarkably durable at 20 years and beyond relative to other repairs, with a low side-effect profile; there are also unique applications of the Hill repair and Hill sutures whic
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Petit, Antoine C., Jacques Laskar, and Gwenaël Boué. "Hill stability in the AMD framework." Astronomy & Astrophysics 617 (September 2018): A93. http://dx.doi.org/10.1051/0004-6361/201833088.

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In a two-planet system, a topological boundary that is created by Sundman (1912, Acta Math., 36, 105) inequality can forbid close encounters between the two planets for an infinite time. A system is said to be Hill stable if it verifies this topological condition. Hill stability is widely used in the study of extrasolar planet dynamics. However, the coplanar and circular orbit approximation is often used. In this paper, we explain how the Hill stability can be understood in the framework of angular momentum deficit (AMD). In the secular approximation, AMD allows us to discriminate between a pr
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Siahaan, Andysah Putera Utama. "Dynamic Key Matrix of Hill Cipher Using Genetic Algorithm." International Journal of Advances in Applied Sciences 6, no. 4 (December 1, 2017): 313. http://dx.doi.org/10.11591/ijaas.v6.i4.pp313-318.

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The matrix in Hill Cipher was designed to perform encryption and decryption. Every column and row must be inserted by integer numbers. But, not any key that can be given to the matrix used for the process. The wrong determinant result cannot be used in the process because it produces the incorrect plaintext when doing the decryption after the encryption. Genetic algorithms offer the optimized way to determine the key used for encryption and decryption on the Hill Cipher. By determining the evaluation function in the genetic algorithm, the key that fits the composition will be obtained. By impl
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Zou, Jingjing, Richard A. Davis, and Gennady Samorodnitsky. "EXTREME VALUE ANALYSIS WITHOUT THE LARGEST VALUES: WHAT CAN BE DONE?" Probability in the Engineering and Informational Sciences 34, no. 2 (January 30, 2019): 200–220. http://dx.doi.org/10.1017/s0269964818000542.

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AbstractIn this paper, we are concerned with the analysis of heavy-tailed data when a portion of the extreme values is unavailable. This research was motivated by an analysis of the degree distributions in a large social network. The degree distributions of such networks tend to have power law behavior in the tails. We focus on the Hill estimator, which plays a starring role in heavy-tailed modeling. The Hill estimator for these data exhibited a smooth and increasing “sample path” as a function of the number of upper order statistics used in constructing the estimator. This behavior became mor
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Romelic, Jovan, Tatjana Pivac, and Kristina Kosic. "Natural resources in the function of the development of tourism of Titel and Titel hill." Glasnik Srpskog geografskog drustva 88, no. 4 (2008): 71–79. http://dx.doi.org/10.2298/gsgd0804071r.

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Titel is the largest and the most interesting settlement in the foothill of Titel hill, according to its area/expanse it is small, but the loess plateau in Serbia. It has the most characteristic position of all Backa settlements in Potisje. It is located in the place where Titel hill is the closest to loess strata in Srem in Fruska gora and where there are the narrowest alluvial planes of the two biggest rivers Danube and Tisa. From naturalgeographical point of view this is very complex and for tourists very interesting area. This fact is especially affected by natural potentials found in geom
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Haseong Kim and E. Gelenbe. "Stochastic Gene Expression Modeling with Hill Function for Switch-Like Gene Responses." IEEE/ACM Transactions on Computational Biology and Bioinformatics 9, no. 4 (July 2012): 973–79. http://dx.doi.org/10.1109/tcbb.2011.153.

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37

Djakov, Plamen, and Boris Mityagin. "Combinatorial Identities Related to Eigen-Function Decompositions of Hill operators: Open Questions." Integral Equations and Operator Theory 75, no. 1 (November 27, 2012): 7–12. http://dx.doi.org/10.1007/s00020-012-2016-2.

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38

Lo, Gane Samb, Modou Ngom, and Moumouni Diallo. "Extremes, Extremal Index Estimation, Records, Moment Problem for the Pseudo-Lindley Distribution and Applications." European Journal of Pure and Applied Mathematics 13, no. 4 (October 31, 2020): 739–57. http://dx.doi.org/10.29020/nybg.ejpam.v13i4.3834.

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The pseudo-Lindley distribution which was introduced in Zeghdoudi and Nedjar (2016) is studied with regards to it upper tail. In that regard, and when the underlying distribution function follows the Pseudo-Lindley law, we investigate the the behavior of its values, the asymptotic normality of the Hill estimator and the double-indexed generalized Hill statistic process (Ngom and Lo, 2016), the asymptotic normality of the records values and the the moment problem.
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Appiah, S. T., Albert Buabeng, and B. Odoi. "Comparative Study of Mathematical Models for Ghana’s Gold Production." Ghana Mining Journal 18, no. 1 (June 28, 2018): 78–83. http://dx.doi.org/10.4314/gm.v18i1.10.

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Sigmoid functions were used to approximate the cumulative gold production in Ghana. The functions examined were the logistic, Gompertz, Gaussian, Probit and the Hill, which were then used to predict into the future. Although all the five approximated models gave a good estimation of the reality, the Gompertz function was identified to give the best approximation of the observed trend of gold production in Ghana. The model was selected based on its high proportion of variance explained (R2 = 0.9402) as well as having the least value in terms of error (RMSE) and information loss (AIC). The model
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Soulios, G. "SPRINGS (CLASSIFICATION, FUNCTION, CAPTURING)." Bulletin of the Geological Society of Greece 43, no. 1 (January 19, 2017): 196. http://dx.doi.org/10.12681/bgsg.11174.

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Todd, K (1980) proposed the following definition for springs: “a concentrated discharge of groundwater that emerges on the ground as a stream of water that flows freely”. Spring is distinguished from water leak that is a normally diffused but extended (linear or 2D) slower movement of groundwater towards the ground surface. Uprush is every groundwater emergence on the ground surface or through the bed of water bodies (river, lake, sea). In the context of hydrogeology springs and uprushes in general are in fact “overflows” of aquifers; hence they serve as aquifer discharge mechanisms. Springs e
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Li, An Lin, Huan Ping Zhang, Hui Du, Yang Li, and Hai Xiang Song. "The Application of Improved Hill-Climbing in the Multiple Nonlinear Regression." Advanced Materials Research 396-398 (November 2011): 2353–56. http://dx.doi.org/10.4028/www.scientific.net/amr.396-398.2353.

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The hill-climbing has been improved by using the percentage random step and by changing variable values instantly, which is under the condition of an improvement in the objective function having been made by a step forward of a variable in a certain direction, and the improved hill-climbing has been used to solve nonlinear regression problems , and the specific algorithm steps is given, and it has been validated with satisfactory results by using practical examples.
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42

Noakes, Timothy D., Juha E. Peltonen, and Heikki K. Rusko. "Evidence that a central governor regulates exercise performance during acute hypoxia and hyperoxia." Journal of Experimental Biology 204, no. 18 (September 15, 2001): 3225–34. http://dx.doi.org/10.1242/jeb.204.18.3225.

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SUMMARY An enduring hypothesis in exercise physiology holds that a limiting cardiorespiratory function determines maximal exercise performance as a result of specific metabolic changes in the exercising skeletal muscle, so-called peripheral fatigue. The origins of this classical hypothesis can be traced to work undertaken by Nobel Laureate A. V. Hill and his colleagues in London between 1923 and 1925. According to their classical model, peripheral fatigue occurs only after the onset of heart fatigue or failure. Thus, correctly interpreted, the Hill hypothesis predicts that it is the heart, not
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43

Ngom, Modou, and Gane Samb Lo. "A Double-indexed Functional Hill Process and Applications." Journal of Mathematics Research 8, no. 4 (July 27, 2016): 144. http://dx.doi.org/10.5539/jmr.v8n4p144.

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<div>Let $X_{1,n} \leq .... \leq X_{n,n}$ be the order statistics associated with a sample $X_{1}, ...., X_{n}$ whose pertaining distribution function (\textit{df}) is $F$. We are concerned with the functional asymptotic behaviour of the sequence of stochastic processes</div><div> </div><div>\begin{equation}<br />T_{n}(f,s)=\sum_{j=1}^{j=k}f(j)\left( \log X_{n-j+1,n}-\log<br />X_{n-j,n}\right)^{s} , \label{fme}<br />\end{equation}</div><div> </div><div>indexed by some classes $\mathcal{F}$ of functions $f:\mathbb{N}%^{\ast
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44

Bulatović, Luka, Anđela Mijanović, Balša Asanović, Nikola Trajković, and Vladimir Božović. "Automated cryptanalysis of substitution cipher using Hill climbing with well designed heuristic function." Mathematica Montisnigri 44 (2019): 135–43. http://dx.doi.org/10.20948/mathmon-2019-44-11.

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45

Pruss, Shelley D. "Selection of natal dens by the swift fox (Vulpes velox) on the Canadian prairies." Canadian Journal of Zoology 77, no. 4 (September 15, 1999): 646–52. http://dx.doi.org/10.1139/z99-001.

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The location and physical characteristics of 32 occupied swift fox (Vulpes velox) natal/rearing dens and 33 unoccupied sites in southeastern Alberta and southwestern Saskatchewan, Canada, were compared in 1991 and 1992. Comparisons between occupied and unoccupied sites were restricted to eight habitat variables that described the orientation of each den entrance, mean height of old and new grass, number of holes in each den complex, den position and slope (i.e., incline of the land) in relation to hills, and distance to the nearest roadway and water source. Two-sample t tests and Mann-Whitney
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46

Niedźwiadek, Rafał, and Andrzej Rozwałka. "The stronghold on Kirkut Hill in Lublin. The state of recognition of the remains of the former stronghold and its role in the medieval Lublin agglomeration." Ana­lecta Archa­eolo­gica Res­so­viensia 15 (2020): 165–85. http://dx.doi.org/10.15584/anarres.2020.15.9.

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The aim of the article is to present the state of the research conducted on the remains of a medieval stronghold on Grodzisko Hill, also known as Kirkut Hill (due to the Jewish cemetery from the late Middle Ages and early modern period located on its top), as well as to show the latest approach to dating the remains of the stronghold and its role in the medieval Lublin agglomeration. Archaeological research carried out on the hill and at its foot in the 1960s and 1970s was of limited range due to the existence of the Jewish cemetery. However, it can be considered that they provided an amount o
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47

Matsebula, Lindiwe Fortunate. "Shoulder Function Following Latarjet Procedure for Recurrent Anterior Shoulder Instability." Journal of Orthopaedics & Bone Disorders 5, no. 1 (2021): 1–8. http://dx.doi.org/10.23880/jobd-16000205.

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Introduction: Anterior shoulder dislocation and recurrent glenohumeral instability is very common in the young active population. It is usually caused by trauma, and often compounded by associated bony Bankart and Hill-Sachs lesions, which distort the anatomy. This causes instability and dysfunction of the joint and these can be addressed by, amongst others, a Latarjet surgical procedure. Hypothesis: We hypothesize that since the Latarjet procedure results in stability and good functional outcome, our results are expected to compare favourably to the rest of the published literature. Methods:
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48

Spudich, Paul, Margaret Hellweg, and W. H. K. Lee. "Directional topographic site response at Tarzana observed in aftershocks of the 1994 Northridge, California, earthquake: Implications for mainshock motions." Bulletin of the Seismological Society of America 86, no. 1B (February 1, 1996): S193—S208. http://dx.doi.org/10.1785/bssa08601bs193.

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Abstract The Northridge earthquake caused 1.78 g acceleration in the east-west direction at a site in Tarzana, California, located about 6 km south of the mainshock epicenter. The accelerograph was located atop a hill about 15-m high, 500-m long, and 130-m wide, striking about N78°E. During the aftershock sequence, a temporary array of 21 three-component geophones was deployed in six radial lines centered on the accelerograph, with an average sensor spacing of 35 m. Station C00 was located about 2 m from the accelerograph. We inverted aftershock spectra to obtain average relative site response
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49

Li, Li-Li, and Fu-Hu Liu. "Kinetic Freeze-Out Properties from Transverse Momentum Spectra of Pions in High Energy Proton-Proton Collisions." Physics 2, no. 2 (June 12, 2020): 277–308. http://dx.doi.org/10.3390/physics2020015.

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Transverse momentum spectra of negative and positive pions produced at mid-(pseudo)rapidity in inelastic or non-single-diffractive proton-proton collisions over a center-of-mass energy, s , range from a few GeV to above 10 TeV are analyzed by the blast-wave fit with Boltzmann (Tsallis) distribution. The blast-wave fit results are well fitting to the experimental data measured by several collaborations. In a particular superposition with Hagedorn function, both the excitation functions of kinetic freeze-out temperature ( T 0 ) of emission source and transverse flow velocity ( β T ) of produced
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Kearney, Kalyn M., Joel B. Harley, and Jennifer A. Nichols. "Classifying muscle parameters with artificial neural networks and simulated lateral pinch data." PLOS ONE 16, no. 9 (September 2, 2021): e0255103. http://dx.doi.org/10.1371/journal.pone.0255103.

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Objective Hill-type muscle models are widely employed in simulations of human movement. Yet, the parameters underlying these models are difficult or impossible to measure in vivo. Prior studies demonstrate that Hill-type muscle parameters are encoded within dynamometric data. But, a generalizable approach for estimating these parameters from dynamometric data has not been realized. We aimed to leverage musculoskeletal models and artificial neural networks to classify one Hill-type muscle parameter (maximum isometric force) from easily measurable dynamometric data (simulated lateral pinch force
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