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Journal articles on the topic 'Adjustment of Curves'

Author: Grafiati

Published: 4 June 2021

Last updated: 16 February 2022

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1

Claudia Cristina Paro de, Paz, Venturini Guilherme Costa, Contini Enio, Costa Ricardo Lopes Dias da, Lameirinha Luara Paula, and Quirino Celia Raquel. "Nonlinear models of Brazilian sheep in adjustment of growth curves." Czech Journal of Animal Science 63, No. 8 (2018): 331–38. http://dx.doi.org/10.17221/87/2017-cjas.

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Growth curves of the Morada Nova sheep males and females were described using nonlinear models and the relationships between body weight and thoracic circumference were evaluated. Altogether 1516 repeated measures of body weight and thoracic circumference of the Morada Nova sheep (668 males and 848 females) taken since birth till 730 days of age were used. The Brody, Richards, von Bertalanffy, Gompertz, and Logistic models have been tested. The Fisher’s test (F) was used to verify the differences (P &lt; 0.05) in growth curves between males and females. The Gompertz model presented a signi

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McVey, Jake. "Linear Histogram Adjustment for Image Enhancement." London Imaging Meeting 2020, no. 1 (2020): 65–68. http://dx.doi.org/10.2352/issn.2694-118x.2020.lim-19.

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Tone curves are one of the simplest techniques for image enhancement. Specified as a function, a tone curve is a transformation that maps pixel levels of an input image to new output levels. Tone curves are the basis of many contrast enhancement algorithms, including Contrast Limited Histogram Equalisation (CLHE), which derives a tone curve from a modification of the image histogram. While these methods can provide good enhancement, they are generally non-linear. In this paper we show the surprising result that a tone curve generated by the non-linear CLHE method (and HE) can be calculated by

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Ensari, Elif, and Mine Özkar. "Shape computations with NURB curves." Artificial Intelligence for Engineering Design, Analysis and Manufacturing 32, no. 3 (2018): 282–94. http://dx.doi.org/10.1017/s0890060417000592.

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AbstractFreeform curves are commonly used in contemporary design practices, especially with digital modeling tools. We investigate facilitating shape subtraction and addition with two-dimensional (planar) non-uniform rational basis-spline (NURB) curves with the codes and conventions of modeling while preserving the visual continuity of curved shapes. Our proposed tool, developed in a common digital modeling environment, automates the adjustment of parameters for tangential continuity of curves in shape rule applications. When the user designates a curve range to subtract from an initial shape

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McBean, Edward A., Jack Gorrie, Michael Fortin, John Ding, and Ralph Monlton. "Adjustment Factors for Flood Damage Curves." Journal of Water Resources Planning and Management 114, no. 6 (1988): 635–46. http://dx.doi.org/10.1061/(asce)0733-9496(1988)114:6(635).

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McKAY, R. M., and I. GARNETT. "GROWTH AND FAT DEPOSITION CURVES IN SWINE." Canadian Journal of Animal Science 68, no. 1 (1988): 57–67. http://dx.doi.org/10.4141/cjas88-006.

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Within-pig regressions of probed backfat thickness (BF) on liveweight (WT) and log10 of age (AGE) on log10 liveweight (LWT) were analyzed to: (1) assess the effects of farrowing season (spring, late summer-early fall), breed (Lacombe and Yorkshire), and sex (boar and gilt); and (2) if warranted, derive, test, and comment on alternative adjustment factors to the ROP adjustment factors currently in use. Results indicated that the interactions involving farrowing season, breed, and sex were significant for the regression parameters (slope, x− and y− intercept). Evaluation of adjustment factors le

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Wang, Pu, Daolin Si, Shuguo Wang, and Qiang Yi. "Study on Gage Widening Methods for Small-Radius Curves." Applied Sciences 11, no. 12 (2021): 5334. http://dx.doi.org/10.3390/app11125334.

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Existing gage widening standards and the influence of gage widening on the curve passing performance of trains and rail wear were examined. The existing gage widening theory can determine the minimum curve radius that needs to be widened, the widening value required by curves with different radii, and whether multiaxle locomotives can pass small-radius curves. However, it does not quantify the influence of the gage widening value on the curve passing performance and track maintenance workload. The range of the minimum curve radius that needs to be widened is 220–350 m, whereas some countries a

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Chernick, Michael Ross, Erik Poulsen, and Yong Wang. "Effects of Bias Adjustment on Actuarial Survival Curves." Drug Information Journal 36, no. 3 (2002): 595–609. http://dx.doi.org/10.1177/009286150203600314.

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Parr, John B. "Spatial Cost Curves and Adjustment of the Firm." Regional Studies 27, no. 6 (1993): 513–26. http://dx.doi.org/10.1080/00343409312331347735.

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Martínez-Gomariz, Eduardo, Edwar Forero-Ortiz, María Guerrero-Hidalga, Salvador Castán, and Manuel Gómez. "Flood Depth‒Damage Curves for Spanish Urban Areas." Sustainability 12, no. 7 (2020): 2666. http://dx.doi.org/10.3390/su12072666.

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Depth‒damage curves, also known as vulnerability curves, are an essential element of many flood damage models. A relevant characteristic of these curves is their applicability limitations in space and time. The reader will find firstly in this paper a review of different damage models and depth‒damage curve developments in the world, particularly in Spain. In the framework of the EU-funded RESCCUE project, site-specific depth‒damage curves for 14 types of property uses have been developed for Barcelona. An expert flood surveyor’s opinion was essential, as the occasional lack of data was made u

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Filipa Mourão, Maria, Ana Cristina Braga, and Pedro Nuno Oliveira. "CRIB conditional on gender: nonparametric ROC curve." International Journal of Health Care Quality Assurance 27, no. 8 (2014): 656–63. http://dx.doi.org/10.1108/ijhcqa-04-2013-0047.

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Purpose – The purpose of this paper is to use the kernel method to produce a smoothed receiver operating characteristic (ROC) curve and show how baby gender can influence Clinical Risk Index for Babies (CRIB) scale according to survival risks. Design/methodology/approach – To obtain the ROC curve, conditioned by covariates, two methods may be followed: first, indirect adjustment, in which the covariate is first modeled within groups and then by generating a modified distribution curve; second, direct smoothing in which covariate effects is modeled within the ROC curve itself. To verify if new-

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Chen, Feng, Liang Yao Gu, Yue Yang, and Xiang Hua Wu. "Reconstruction Method of Existing Speed Rail Based on Precision Measurement." Applied Mechanics and Materials 256-259 (December 2012): 1761–64. http://dx.doi.org/10.4028/www.scientific.net/amm.256-259.1761.

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Absolute measuring principle of the high-speed rail was introduced to the measurement of existing speed rail. The line parameter reconstruction and long-wave smooth management is implemented. CPIII control points are laid along existing speed rail. Using the track fine-adjustment instrument, the center geodetic coordinates of midline of track were measured precisely. By least squares fitting method, parameters of straight line between curves was calculated. Plane curve were reconstructed based on measured geodetic coordinates of the continuous rail. The optimization results were used for the t

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Notter, D. R., R. C. Borg, and L. A. Kuehn. "Adjustment of lamb birth and weaning weights for continuous effects of ewe age." Animal Science 80, no. 3 (2005): 241–48. http://dx.doi.org/10.1079/asc40760241.

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AbstractProcedures for continuous adjustment of lamb birth and weaning weights for effects of ewe age were developed using 18 747 birth and 13 139 weaning weight records of Polypay sheep enrolled in the US National Sheep Improvement Program. Changes in birth and weaning weights across ewe age groups were modelled using hybrid curves that combined asymptotic regression models to describe initial increases in lamb weight as ewes moved into adulthood with secondorder polynomials to describe declines in lamb weights in older ewes. Lamb birth and weaning weights were highest (and the asymptotic and

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Dourado-Neto, Durval, Donald R. Nielsen, Jan W. Hopmans, Klaus Reichardt, and Osny Oliveira Santos Bacchi. "Software to model soil water retention curves (SWRC, version 2.00)." Scientia Agricola 57, no. 1 (2000): 191–92. http://dx.doi.org/10.1590/s0103-90162000000100031.

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Carrigan, Christine E., and Malcolm H. Ray. "Proposed Horizontal Curve and Vertical Grade Encroachment Adjustment Factors." Transportation Research Record: Journal of the Transportation Research Board 2521, no. 1 (2015): 96–102. http://dx.doi.org/10.3141/2521-10.

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The probability of a vehicle encroaching onto the roadside is influenced by several geometric characteristics of the roadway. The horizontal curvature and vertical grade encroachment adjustment factors (EAFs) used in the third version of the Roadside Safety Analysis Program (RSAPv3) were adopted from adjustment factors introduced in 2003 in NCHRP Report 492 during the original development of RSAP. These adjustments were developed by interpreting earlier work on curves and grades. Given the weaknesses and limitations of the earlier study, it was suggested that a larger-scale study with larger s

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Hoekstra, Janneke A. "A note on a partial adjustment model to describe lactation curves." Animal Science 42, no. 3 (1986): 431–32. http://dx.doi.org/10.1017/s0003356100018249.

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ABSTRACTDhanoa and Le Du (Animal Production 1982, 34: 243–247) proposed a model in which the milk yield in a particular week is described by a weighted average of a straight-line target yield and the yield in the preceding week. It is demonstrated that the weight parameter × in this model is partially determined by the time from calving to peak yield and hence does not represent correlation between successive yields satisfactorily.

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Gioria, Rafael dos Santos, Nathália Seiler Spada, and Cleyton de Carvalho Carneiro. "Adjustment of relative permeability curves parameters by supervised artificial neural networks." Rio Oil and Gas Expo and Conference 20, no. 2020 (2020): 40–41. http://dx.doi.org/10.48072/2525-7579.rog.2020.040.

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VILASBOAS, J. M. L., S. L. MACHADO, and S. A. PINTO. "Filter paper method to determine the water retention curves for mortar and cement samples." Revista IBRACON de Estruturas e Materiais 9, no. 4 (2016): 525–33. http://dx.doi.org/10.1590/s1983-41952016000400004.

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Abstract This study deals with the application of the filter paper method to determine water retention curves for mortar and concrete samples. A water retention curve exhibits the relationship between water content and energy state in interstitial water, normally expressed as a negative value when compare to normal conditions of temperature and pressure, being referred to as suction. Considering the water retention curve as a basic characterization tool for unsaturated soils, its usage in the engineering field concerning most of the construction materials remains as a pending task. However, st

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Cauteruccio, Arianna, and Luca G. Lanza. "Parameterization of the Collection Efficiency of a Cylindrical Catching-Type Rain Gauge Based on Rainfall Intensity." Water 12, no. 12 (2020): 3431. http://dx.doi.org/10.3390/w12123431.

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Despite the numerous contributions available in the literature about the wind-induced bias of rainfall intensity measurements, adjustments based on collection efficiency curves are rarely applied operationally to rain records obtained from catching-type rain gauges. The many influencing variables involved and the variability of the results of field experiments do not facilitate the widespread application of adjustment algorithms. In this paper, a Lagrangian particle tracking model is applied to the results of computational fluid dynamic simulations of the airflow field surrounding a rain gauge

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Mangalathu, Sujith, and Jong-Su Jeon. "Adjustment Factors to Account for the Effect of Bridge Deck Horizontal Curvature on the Seismic Response of Concrete Box-Girder Bridges in California." Earthquake Spectra 34, no. 2 (2018): 893–914. http://dx.doi.org/10.1193/060917eqs109m.

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This research suggests adjustment factors to account for the effect of bridge deck horizontal curvature on the probabilistic seismic demand model (PSDMs) and fragility curves of concrete box-girder bridges in California. For this purpose, typical configurations of horizontally curved bridges in California are selected to create detailed three-dimensional (3-D) probabilistic bridge models with different levels of bridge deck horizontal curvature. Simulation results from the nonlinear time history analysis (NLTHA) of bridges are used to compare the PSDM of individual bridge components using a st

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Hindsley, Robert, and R. A. Bell. "An Adjustment to Cepheid Distances Calculated Using Model Atmospheres." International Astronomical Union Colloquium 139 (1993): 94. http://dx.doi.org/10.1017/s0252921100116987.

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Hindsley and Bell (1989, Ap. J., 341, 1004) determined distances for 23 Cepheids using the surface brightness method. The color V – IC on the Cousins system or V – RJ on the Johnson system was used to measure visual surface brightness. Combined with the observed visual magnitudes, angular diameters were then calculated. Comparison of angular diameters with radius differences in linear units, obtained by integrating the radial velocity curve, yielded each Cepheid's distance.Hindsley and Bell calibrated the relationship between color and surface brightness using model atmospheres. The zero point

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Cunha, Daniel de Noronha Figueiredo Vieira da, José Carlos Pereira, Fabyano Fonseca e. Silva, Oriel Fajardo de Campos, José Luis Braga, and Janaina Azevedo Martuscello. "Selection of models of lactation curves to use in milk production simulation systems." Revista Brasileira de Zootecnia 39, no. 4 (2010): 891–902. http://dx.doi.org/10.1590/s1516-35982010000400026.

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The objective of this study was to select models of lactation curves with a better adjustment to the observed data in models of milk production simulation systems. A data base on 6,459 recordings of daily milk production was used. These data were obtained from monthly and fortnightly controls of milk between 2004 and 2007, from 472 lactations of animals from ten different milking cow herd farms. Based on rolling averages of milk production (MP-L/day) per cow, the ten herd farms were divided into low (L < 15), medium (15 <M < 20) and high (H > 20). Data were also divided according t

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Chen, Jun. "Quasi-Bézier Curves with Shape Parameters." Journal of Applied Mathematics 2013 (2013): 1–9. http://dx.doi.org/10.1155/2013/171392.

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The universal form of univariate Quasi-Bézier basis functions with multiple shape parameters and a series of corresponding Quasi-Bézier curves were constructed step-by-step in this paper, using the method of undetermined coefficients. The series of Quasi-Bézier curves had geometric and affine invariability, convex hull property, symmetry, interpolation at the endpoints and tangent edges at the endpoints, and shape adjustability while maintaining the control points. Various existing Quasi-Bézier curves became special cases in the series. The obvious geometric significance of shape parameters ma

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Kotamäki, Mauri. "Laffer Curves and Home Production." Nordic Tax Journal 2017, no. 1 (2017): 59–69. http://dx.doi.org/10.1515/ntaxj-2017-0004.

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Abstract In the earlier related literature, consumption tax rate Laffer curve is found to be strictly increasing (see Trabandt and Uhlig (2011)). In this paper, a general equilibrium macro model is augmented by introducing a substitute for private consumption in the form of home production. The introduction of home production brings about an additional margin of adjustment – an increase in consumption tax rate not only decreases labor supply and reduces the consumption tax base but also allows a substitution of market goods with home-produced goods. The main objective of this paper is to show

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Liu, Wei, Jian Hong Wang, Yang Li, and Wei Li. "Existing Railway Horizontal Alignment Reconstruction Algorithm Based on Line Segments Identification." Applied Mechanics and Materials 405-408 (September 2013): 1772–76. http://dx.doi.org/10.4028/www.scientific.net/amm.405-408.1772.

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A Line Segments Identification model is put forward to realize the existing railway horizontal alignment reconstruction. Firstly, Hough transform based on constraint adjustment quantity is introduced to reject the abnormal points that will affect the quality of the identification in latter steps. Then total least square method is used to get the linear segments, after which the circular curve segments and the transition curves segments will be got. At last, an evaluation function which has four arguments: circular curve radius , two transition curves length and length of straight line between

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Tao, Jian Ming, Ai Ping Song, and Dan Ping Yi. "Description and Smoothing of NC Motion Path Based on the Cubic Trigonometric Interpolation Spline." Applied Mechanics and Materials 365-366 (August 2013): 515–21. http://dx.doi.org/10.4028/www.scientific.net/amm.365-366.515.

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In order to better describe the complex motion path of NC machining and realize the smooth transition between path segments, a kind of cubic trigonometric interpolation spline curve was put forward based on a set of special basis function. The spline curve which with adjustable shape satisfies the C1 continuity and it can accurately describe some common engineering curves such as straight line, circular arc and free curve. According to the given information of control points, different shapes of interpolation spline curve can be gotten by changing the adjustment coefficients. Through selecting

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Pham, V. M., A. Houilliez, A. Schill, A. Carpentier, B. Herbaux, and A. Thevenon. "Study of the pressures applied by a Chêneau brace for correction of adolescent idiopathic scoliosis." Prosthetics and Orthotics International 32, no. 3 (2008): 345–55. http://dx.doi.org/10.1080/03093640802016092.

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We performed a study on 32 idiopathic scoliotic patients (30 females, 2 males) treated with a Chêneau brace. Eighteen patients had a single right thoracic curve and 14 had a single right thoracolumbar curve. We used the TekScan® system (ClinSeat Type 5315 Sensor, TekScan, Boston MA, USA) to measure pressures at the skin-brace interface, assess the effect of strap tension and analyze the variation of these pressures with position and activity. The TekScan® device enabled identification of the pressure areas corresponding to the brace's three loading points. The pressure under the main pad had a

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Colander, David. "The Stories We Tell: A Reconsideration of AS / AD Analysis." Journal of Economic Perspectives 9, no. 3 (1995): 169–88. http://dx.doi.org/10.1257/jep.9.3.169.

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This paper explains that the AS/AD model as currently presented in the tests is seriously flawed. It does not fulfill the minimum requirement of a model: logical consistency. Its component parts are derived from models that reflect different, and inconsistent, models of the economy. Moreover, the appropriate disequilibrium adjustment story that appropriately accompanies it is inconsistent with observed reality. In this alternative model, Keynesian adjustment occurs through shifting AS/AD curves along institutionally determined price level vectors rather than through movements along the AS/AD c

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Tai, Chiew-Lan, Shi-Min Hu, and Qi-Xing Huang. "Approximate merging of B-spline curves via knot adjustment and constrained optimization." Computer-Aided Design 35, no. 10 (2003): 893–99. http://dx.doi.org/10.1016/s0010-4485(02)00176-8.

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Kaul, Aditya, Vikas Mehrotra, and Randall Morck. "Demand Curves for StocksDoSlope Down: New Evidence from an Index Weights Adjustment." Journal of Finance 55, no. 2 (2000): 893–912. http://dx.doi.org/10.1111/0022-1082.00230.

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Cauteruccio, Arianna, Enrico Chinchella, Mattia Stagnaro, and Luca G. Lanza. "Snow Particle Collection Efficiency and Adjustment Curves for the Hotplate Precipitation Gauge." Journal of Hydrometeorology 22, no. 4 (2021): 941–54. http://dx.doi.org/10.1175/jhm-d-20-0149.1.

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AbstractThe hotplate precipitation gauge operates by means of a thermodynamic principle. It is composed of a small disk with two thin aluminum heated plates on the upper and lower faces. Each plate has three concentric rings to prevent the hydrometeors from sliding off in strong wind. As for the more widely used tipping-bucket and weighing gauges, measurements are affected by the wind-induced bias due to the bluff-body aerodynamics of the instrument outer shape. Unsteady Reynolds-averaged Navier–Stokes equations were numerically solved, using a k–ω shear stress transport closure model, to simu

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Linthorne, Nicholas P. "The Effect of Wind on 100-m Sprint Times." Journal of Applied Biomechanics 10, no. 2 (1994): 110–31. http://dx.doi.org/10.1123/jab.10.2.110.

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The effect of wind on the race times of international standard 100-m sprinters was determined using statistical information from official competitions. A time adjustment curve derived from mathematical models was fitted to performances by the finalists at the U.S. Olympic Trials and TAC Championships over the last 10 years, and to multiple performances by individual athletes at recent Olympic Games and World Championships. Consistent results were obtained from the two studies. The rate of improvement in. race time gradually decreased with increasing wind velocity, and so the disadvantage of a

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Yoon, Yeunggurl, Yongju Son, Jintae Cho, SuHyeong Jang, Young-Geun Kim, and Sungyun Choi. "High-Frequency Modeling of a Three-Winding Power Transformer Using Sweep Frequency Response Analysis." Energies 14, no. 13 (2021): 4009. http://dx.doi.org/10.3390/en14134009.

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A power transformer is an essential device for stable and reliable power transfer to customers. Therefore, accurate modeling of transformers is required for simulation-based analysis with the model. The paper proposes an efficient and straightforward parameter estimation of power transformers based on sweep frequency response analysis (SFRA) test data. The method first develops a transformer model consisting of repetitive RLC sections and mutual inductances and then aligns the simulated SFRA curve with the measured one by adjusting parameters. Note that this adjustment is based on individual p

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Lam, Norris, Jason W. Kean, and Steve W. Lyon. "Modeling streamflow from coupled airborne laser scanning and acoustic Doppler current profiler data." Hydrology Research 48, no. 4 (2016): 981–96. http://dx.doi.org/10.2166/nh.2016.257.

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The rating curve enables the translation of water depth into stream discharge through a reference cross-section. This study investigates coupling national scale airborne laser scanning (ALS) and acoustic Doppler current profiler (ADCP) bathymetric survey data for generating stream rating curves. A digital terrain model was defined from these data and applied in a physically based 1-D hydraulic model to generate rating curves for a regularly monitored location in northern Sweden. Analysis of the ALS data showed that overestimation of the streambank elevation could be adjusted with a root mean s

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Azevedo Junior, Jairo, Tarcisio De Moraes Gonçalves, José Camisão De Souza, Mary Ana Petersen Rodriguez, Cláudio Nápolis Costa, and Júlio Gil Vale Carvalheira. "Adjustment of Lactation Curves of Holstein Cows from Herds of Minas Gerais, Brazil." Journal of Agricultural Science 10, no. 2 (2018): 1. http://dx.doi.org/10.5539/jas.v10n2p1.

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Random regression models (RRM) differ in terms of the functions used to describe the shape of lactation curves. The aim was to compare random regression models under different functions to describe the lactation curves from Holstein cows in herds of the state of Minas Gerais. A database of 28,118 production records was analyzed using the test-day records of 4,230 first parity cows from five herds. The Wilmink, Ali & Schaeffer and Legendre polynomial (orders 4, 5 and 6) functions were adjusted in RRM to model the mean production trend (fixed) and genetic and permanent environmental (random)

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Lee, James, Carl Yoshizawa, Lynne Wilkens, and H. P. Lee. "Covariance adjustment of survival curves based on Cox′s proportional hazards regression model." Bioinformatics 8, no. 1 (1992): 23–27. http://dx.doi.org/10.1093/bioinformatics/8.1.23.

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Grill, Sophia, Matthias Rosenbaum-Feldbrügge, Herbert Fliege, and Heiko Rüger. "Expatriate adjustment over time among foreign service employees: the role of cross-cultural experience." Journal of Global Mobility 9, no. 3 (2021): 338–60. http://dx.doi.org/10.1108/jgm-01-2021-0009.

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PurposeDrawing on social learning theory (SLT), this study aims to investigate how previous cross-cultural work experience influences individual adjustment in a foreign environment over time. For this purpose, the authors study foreign service employees who are characterized by permanent high mobility and frequent rotations.Design/methodology/approachTwo cross-sectional surveys conducted in 2011 (analytical sample N = 1,097) and 2019 (analytical sample N = 1,431) amongst German Foreign Service (GFS) employees are used to analyse employees' adjustment, measured by self-perceived quality of life

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Esakia, Andrey, Alex Endert, and Chris North. "Large Display Interaction via Multiple Acceleration Curves and Multifinger Pointer Control." Advances in Human-Computer Interaction 2014 (2014): 1–13. http://dx.doi.org/10.1155/2014/691507.

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Large high-resolution displays combine high pixel density with ample physical dimensions. The combination of these factors creates a multiscale workspace where interactive targeting of on-screen objects requires both high speed for distant targets and high accuracy for small targets. Modern operating systems support implicit dynamic control-display gain adjustment (i.e., a pointer acceleration curve) that helps to maintain both speed and accuracy. However, large high-resolution displays require a broader range of control-display gains than a single acceleration curve can usably enable. Some in

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Lee, Yonghee, Hak-Sung Kim, Muhammad Irslan Khalid, Yonggook Lee, and Duhee Park. "Effect of Nonlinear Soil Model on Seismic Response of Slopes Composed of Granular Soil." Advances in Civil Engineering 2020 (November 23, 2020): 1–11. http://dx.doi.org/10.1155/2020/8890247.

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A series of two-dimensional finite element analyses are performed to simulate the seismic response of slope composed of granular soil. Four sets of input parameters for the nonlinear soil model are used to fit the reference the shear modulus reduction and damping curves, thereby to evaluate the influence of the nonlinear soil model. The first set is fitted to the shear modulus reduction curve. The second and third sets are fitted simultaneously to both shear modulus reduction and damping curves. The final set applied the shear strength adjustment to adequately capture the nonlinear soil respon

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Ren, Zhi Chao, and Kai Jiang Cao. "Research on Electricity Load of Three Industries and Residents’ Life." Advanced Materials Research 986-987 (July 2014): 474–78. http://dx.doi.org/10.4028/www.scientific.net/amr.986-987.474.

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In recent years, strategic adjustment of economic structure is as the main direction of accelerating transformation of economic development mode in Sichuan province of China. Electricity load characteristics and its development trend could reflect industries’ structure of Sichuan province. The ways of typical day selection and load curve calculation are discussed. Electricity load of typical trades of three industries and residents’ life is analyzed, whose load curves of everyday as well as the four seasons are obtained. As a result, relationship between electricity load structure and industri

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DEVIN, SIOBHÁN, BERNARD HANZON, and THOMAS RIBARITS. "A FINITE-DIMENSIONAL HJM MODEL: HOW IMPORTANT IS ARBITRAGE-FREE EVOLUTION?" International Journal of Theoretical and Applied Finance 13, no. 08 (2010): 1241–63. http://dx.doi.org/10.1142/s0219024910006182.

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We consider a two-factor Heath–Jarrow–Morton (HJM) model under the risk neutral measure and show that it may be decoupled into a particular dynamic Nelson–Siegel (NS) model plus a somewhat counter-intuitive adjustment (lying outside the NS family) which keeps it arbitrage-free. We assess the importance of the adjustment for arbitrage-free pricing by comparing the HJM model with a novel NS model which is selected using projection techniques. We analyze forward curves and derivative prices generated by the HJM and projected NS model and consider two real-world case studies. Our analysis shows th

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Petinov, Sergei V., and Anil K. Thayamballi. "The Application of S-N Curves Considering Mismatch of Stress Concentration Between Test Specimen and Structure." Journal of Ship Research 42, no. 01 (1998): 68–78. http://dx.doi.org/10.5957/jsr.1998.42.1.68.

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This paper presents a procedure for the adjustment of S-N diagrams for noncontinuous welded joints in the fatigue analysis of structural details. The adjustment takes into account the effects of differences in geometry between the test specimen underlying the S-N curve and the hull structural detail it is applied to, considering the inelastic response of material at the anticipated crack origin, multiple modes of loading, and their statistical correlation. The basis of the approach is a comparison of relative fatigue lives for the structural detail of interest and the corresponding baseline sp

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Mollashahi, Hamid Farhad, Kasra Khajavi, and Asieh Khadem Ghaeini. "Safety Evaluation and Adjustment of Superelevation Design Guides for Horizontal Curves Based on Reliability Analysis." Journal of Transportation Engineering, Part A: Systems 143, no. 6 (2017): 04017013. http://dx.doi.org/10.1061/jtepbs.0000037.

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Geng, Yaheng, Rui Guo, Yizhuo Li, Xin Zhang, and Jiaxiong Lin. "Characteristics of coke pore formation and its effect on solution loss degradation." Metallurgical Research & Technology 117, no. 1 (2020): 112. http://dx.doi.org/10.1051/metal/2020004.

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Pore structure is an important factor that affects coke thermal properties. In order to reveal the formation regularity of coke pore structure, high temperature carbonization experiment of blending coals was carried out in 40 kg test coke oven. The pore structure of different regions and different orientations of the obtained coke was detected by microscope. The ratio of the average pore diameter of the coke to the average wall thickness was highly correlated with the square of porosity. The relationship shows that during coking, the development of the wall thickness is restricted by pore coal

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Irani, Missam, Sukhwan Chung, Mincheol Kim, Kwangoh Lee, and Mansoo Joun. "Adjustment of Isothermal Transformation Diagrams Using Finite-Element Optimization of the Jominy Test." Metals 10, no. 7 (2020): 931. http://dx.doi.org/10.3390/met10070931.

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A practical method for adjusting and optimizing isothermal transformation (IT) diagrams using the Jominy test is presented. The method is based on a finite-element optimization procedure, which iteratively minimizes the error between the target phase fractions and the corresponding finite-element solutions at the sample points using an optimization tool. A standard Jominy test of AISI 52100 bearing steel is used to investigate the feasibility and reliability of the method. Three optimization parameters for each IT diagram curve are mathematically applied to the modified Kirkaldy model. These p

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Sun, Xin, and Xiaomin Ji. "Parametric Model for Kitchen Product Based on Cubic T-Bézier Curves with Symmetry." Symmetry 12, no. 4 (2020): 505. http://dx.doi.org/10.3390/sym12040505.

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The parametric method of product design is a pivotal and practical technique in computer-aided design and manufacturing (CAD/CAM) and used in many manufacturing sectors. In this paper, we presented a novel parametric method to design a kitchen product in the residential environment, a kitchen cabinet, by using cubic T-Bézier curves with constraints of geometric continuities. First, we introduced a class of cubic T-Bézier curves with two shape parameters and derived the G1 and G2 continuity conditions of the cubic T-Bézier curves. Then, we constructed shape-controlled complex contour curves of

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Bortolin, Taison Anderson, Clauber Corso, Ludmilson Abritta Mendes, Alan De Gois Barbosa, and Vania Elisabete Schneider. "Determinação de equações de chuvas intensas para a encosta superior do nordeste do Rio Grande do Sul." Ciência e Natura 42 (December 12, 2020): e83. http://dx.doi.org/10.5902/2179460x40357.

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The relationship intensity, duration and frequency is very important for the hydraulic project’s development, mainly in regions where there is no study updated data. This paper objective was to determine the intensity-duration-frequency curves at Rio Grande do Sul hillside, in order to provide tools for hydraulic structures design and hydrological studies in the region. For the return periods 2, 5, 10, 20, 25, 50 and 100 - year precipitation determination was used Gumbel’s and log-normal statistical distributions, using the Rain Relationship Duration Method for 20 rainfall stations. For Gumbel

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Hang, Houjun, Xing Yao, Qingqing Li, and Michel Artiles. "Cubic B-Spline Curves with Shape Parameter and Their Applications." Mathematical Problems in Engineering 2017 (2017): 1–7. http://dx.doi.org/10.1155/2017/3962617.

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The present studies on the extension of B-spline mainly focus on Bezier methods and uniform B-spline and are confined to the adjustment role of shape parameters to curves. Researchers pay little attention to nonuniform B-spline. This paper discusses deeply the extension of the quasi-uniform B-spline curves. Firstly, by introducing shape parameters in the basis function, the spline curves are defined in matrix form. Secondly, the application of the shape parameter in shape design is analyzed deeply. With shape parameters, we get another means for adjusting the curves. Meanwhile, some examples a

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Pérochon, L., J. B. Coulon, and F. Lescourret. "Modelling lactation curves of dairy cows with emphasis on individual variability." Animal Science 63, no. 2 (1996): 189–200. http://dx.doi.org/10.1017/s1357729800014740.

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AbstractFive published equations were compared on their ability to adjust different patterns of lactation curves. The equation y(t) = a exp(b1t'2/2 + b2/t – c(l + t'/2)t') with t' = (t – 21·4)/l00 (i) was retained because of the quality of the adjustment and the absence of convergence problems when applied on individual curves. Including an effect of season (SE) and an effect of pregnancy (PE) improved the quality of individual adjustments (no. = 339). The final equation was equal to (i) + SE + PE with SE = a + b cos (2π(wc + w - l)/52) + c sin(2n(wc + w - 1)/52), with wc= week of the year at

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Lee, Liang Cheng, and Ying Lu. "A Study of Eliminating the Protective Coordination Curve Intersection of Electromechanical Overcurrent Relays in Subtransmission Systems." Applied Mechanics and Materials 284-287 (January 2013): 2450–62. http://dx.doi.org/10.4028/www.scientific.net/amm.284-287.2450.

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This paper presents a practical new method to quickly and effectively eliminate coordination curve intersection problems in subtransmission systems resulting from improper protective coordination settings in electromechanical overcurrent relays. Firstly, a database representing the relay operating characteristics was constructed based on the electromechanical overcurrent relay characteristic curves published by the manufacturer. Then, combining with this database, a fixed-point coordination curve adjustment procedure dedicated to electromechanical overcurrent relays was proposed to tackle the

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Kjeldsen, Thomas R. "Modelling the impact of urbanization on flood frequency relationships in the UK." Hydrology Research 41, no. 5 (2010): 391–405. http://dx.doi.org/10.2166/nh.2010.056.

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This paper investigates the effect of urbanization on the three key statistics used to establish flood frequency curves when combining the index flood method with the method of L-moments for estimating distribution parameters, i.e. the median annual maximum peak flow (the index flood), and the high-order L-moment ratios L-CV and L-SKEW. An existing procedure employing catchment descriptors was used to estimate the three statistics at ungauged sites in the UK. As-rural estimates of the three statistics were obtained in 200 urban catchments and compared to the corresponding values obtained from

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