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Journal articles on the topic 'COEFFICIENT ESTIMATES'

Author: Grafiati

Published: 11 September 2023

Last updated: 26 July 2025

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1

Lentz, S. J., K. A. Davis, J. H. Churchill, and T. M. DeCarlo. "Coral Reef Drag Coefficients – Water Depth Dependence." Journal of Physical Oceanography 47, no. 5 (2017): 1061–75. http://dx.doi.org/10.1175/jpo-d-16-0248.1.

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AbstractA major challenge in modeling the circulation over coral reefs is uncertainty in the drag coefficient because existing estimates span two orders of magnitude. Current and pressure measurements from five coral reefs are used to estimate drag coefficients based on depth-average flow, assuming a balance between the cross-reef pressure gradient and the bottom stress. At two sites wind stress is a significant term in the cross-reef momentum balance and is included in estimating the drag coefficient. For the five coral reef sites and a previous laboratory study, estimated drag coefficients i

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2

Zaprawa, Paweł, and Katarzyna Tra̧bka-Wiȩcław. "Estimates of Coefficient Functionals for Functions Convex in the Imaginary-Axis Direction." Symmetry 12, no. 10 (2020): 1736. http://dx.doi.org/10.3390/sym12101736.

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Let C0(h) be a subclass of analytic and close-to-convex functions defined in the open unit disk by the formula Re{(1−z2)f′(z)}>0. In this paper, some coefficient problems for C0(h) are considered. Some properties and bounds of several coefficient functionals for functions belonging to this class are provided. The main aim of this paper is to find estimates of the difference and of sum of successive coefficients, bounds of the sum of the first n coefficients and bounds of the n-th coefficient. The obtained results are used to determine coefficient estimates for both functions convex in the i

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3

Dai, Pingsheng, and Sitong Shen. "Estimation of the Gini coefficient based on two quantiles." PLOS ONE 20, no. 2 (2025): e0318833. https://doi.org/10.1371/journal.pone.0318833.

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Based on the Palma proposition and the Lorenz fitting curve, this paper estimates the sample Gini coefficient using the income share of the top 10% and bottom 40% of the population. Empirical research shows that the absolute error between the estimated value and sample Gini coefficient is within a hundredth. Monte Carlo simulation shows that the new method has good performance and robustness for estimating Gini coefficients with different sample sizes and different inequality levels. Using the two quantiles in the deciles to estimate the sample Gini coefficient and the Lorenz fitting curve is

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Idrisa, Hamimu, S. A. Kadam, and S. D. Gorantiwar. "Estimation of Crop Coefficients Based on Normalize Difference Vegetation Index." Journal of Agriculture Research and Technology 47, no. 03 (2022): 381–88. http://dx.doi.org/10.56228/jart.2022.47320.

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Crop coefficient is one of the most important parameters used for the estimation of crop evapotranspiration (ETc). Crop coefficient (Kc)-based estimation of crop evapotranspiration is most commonly used methods for irrigation water management. However, crop coefficient approach used for estimation ETc using the generalized crop coefficients mentioned in Irrigation and Drainage Paper No. 56 of the Food and Agricultural Organization of the United Nations can contribute to crop evapotranspiration estimates that are substantially different from actual crop evapotranspiration. The colinear relation

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5

Darus, Maslina, and Ajab Akbarally. "Coefficient estimates for Ruscheweyh derivatives." International Journal of Mathematics and Mathematical Sciences 2004, no. 36 (2004): 1937–42. http://dx.doi.org/10.1155/s0161171204309051.

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We consider functionsf, analytic in the unit disc and of the normalized formf(z)=z+∑n=2∞anzn. For functionsf∈R¯δ(β), the class of functions involving the Ruscheweyh derivatives operator, we give sharp upper bounds for the Fekete-Szegö functional|a3−μa22|.

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6

Akgül, Arzu. "Initial Coefficient Estimates of Bi-Univalent Functions Linked with Balancing Coefficients." WSEAS TRANSACTIONS ON MATHEMATICS 22 (October 23, 2023): 792–97. http://dx.doi.org/10.37394/23206.2023.22.87.

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7

Raghunathan, Trivellore E., Paula K. Diehr, and Allen D. Cheadle. "Combining Aggregate and Individual Level Data to Estimate an Individual Level Correlation Coefficient." Journal of Educational and Behavioral Statistics 28, no. 1 (2003): 1–19. http://dx.doi.org/10.3102/10769986028001001.

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Methods are developed that use aggregate data, possibly based on a large number of individuals, and individual level data, from a small fraction of individuals from the same or similar population, to eliminate ecological bias inherent in the analysis of aggregate data. The primary focus is on estimating the individual level correlation coefficient but the proposed methodology can be extended to estimate regression coefficients. Two approaches, the method of moments and the maximum likelihood, are developed for a bivariate distribution, but can be extended to a multivariate distribution. The me

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8

Zaprawa, Paweł, Anna Futa, and Magdalena Jastrzębska. "On Coefficient Functionals for Functions with Coefficients Bounded by 1." Mathematics 8, no. 4 (2020): 491. http://dx.doi.org/10.3390/math8040491.

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In this paper, we discuss two well-known coefficient functionals a 2 a 4 - a 3 2 and a 4 - a 2 a 3 . The first one is called the Hankel determinant of order 2. The second one is a special case of Zalcman functional. We consider them for functions in the class Q R ( 1 2 ) of analytic functions with real coefficients which satisfy the condition ( ) f ( z ) z > 1 2 for z in the unit disk Δ . It is known that all coefficients of f ∈ Q R ( 1 2 ) are bounded by 1. We find the upper bound of a 2 a 4 - a 3 2 and the bound of | a 4 - a 2 a 3 | . We also consider a few subclasses of Q R ( 1 2 ) and w

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9

Chiew, FHS, and TA Mcmahon. "Assessing the adequacy of catchment streamflow yield estimates." Soil Research 31, no. 5 (1993): 665. http://dx.doi.org/10.1071/sr9930665.

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Rainfall-runoff models are frequently used by hydrologists to estimate runoff from rainfall and climate data, with the model adequacy assessed by comparing the level of agreement between flows simulated by the model and the recorded flows. This paper describes simple methods (visual plots, statistical parameters and dimensionless coefficients) which are commonly used to compare estimated and recorded streamflow time series and discusses their advantages and limitations. Results of a survey conducted to ascertain the required quality of flow estimates before they are considered to be satisfacto

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10

Green, Edwin J., and William E. Strawderman. "Stein-rule estimation of coefficients for 18 eastern hardwood cubic volume equations." Canadian Journal of Forest Research 16, no. 2 (1986): 249–55. http://dx.doi.org/10.1139/x86-044.

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A Stein-rule estimator, which shrinks least squares estimates of regression parameters toward their weighted average, was employed to estimate the coefficient in the constant form factor volume equation for 18 species simultaneously. The Stein-rule procedure was applied to ordinary least squares estimates and weighted least squares estimates. Simulation tests on independent validation data sets revealed that the Stein-rule estimates were biased, but predicted better than the corresponding least squares estimates. The Stein-rule procedures also yielded lower estimated mean square errors for the

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11

Smith, Frederick W., D. Arthur Sampson, and James N. Long. "Comparison of Leaf Area Index Estimates from Tree Allometrics and Measured Light Interception." Forest Science 37, no. 6 (1991): 1682–88. http://dx.doi.org/10.1093/forestscience/37.6.1682.

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Abstract We compared estimates of leaf area index (LAI) based on tree allometrics and light interception in 15 lodgepole pine (Pinus contorta var. latifolia) stands in southeastern Wyoming. LAI from stem allometrics was estimated with a local equation demonstrated to produce accurate and unbiased leaf area estimates for the stand conditions in this study. LAI from measured light interception, estimated with a species-average light extinction coefficient using the Beer-Lambert Law, was not correlated with LAI determined from tree allometrics. Light extinction coefficients varied from 0.29 to 0.

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12

Raza, M., D. K. Thomas, and A. Riaz. "Coefficient estimates for starlike and convex functions related to sigmoid functions." Ukrains’kyi Matematychnyi Zhurnal 75, no. 5 (2023): 683–97. http://dx.doi.org/10.37863/umzh.v75i5.7093.

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UDC 517.5 We give sharp coefficient bounds for starlike and convex functions related to modified sigmoid functions. We also provide some sharp coefficients bounds for the inverse functions and sharp bounds for the initial logarithmic coefficients and some coefficient differences.

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13

Orhan, Halit, Nihat Yagmur, and Murat Caglar. "Coefficient estimates for Sakaguchi type functions." SARAJEVO JOURNAL OF MATHEMATICS 8, no. 2 (2012): 235–44. http://dx.doi.org/10.5644/sjm.08.2.05.

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14

SAKAR, F. Müge, and H. Özlem GÜNEY. "Coefficient estimates for bi-concave functions." Communications Faculty Of Science University of Ankara Series A1Mathematics and Statistics 68, no. 1 (2018): 53–60. http://dx.doi.org/10.31801/cfsuasmas.443600.

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15

Ozawa, Mitsuru. "Coefficient estimates for the class $\Sigma$." Kodai Mathematical Journal 9, no. 1 (1986): 123–33. http://dx.doi.org/10.2996/kmj/1138037155.

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16

Totik, Vilmos. "Coefficient estimates on general compact sets." Publicationes Mathematicae Debrecen 96, no. 1-2 (2020): 131–39. http://dx.doi.org/10.5486/pmd.2020.8631.

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17

McCarthy, John E. "Coefficient estimates on weighted Bergman spaces." Duke Mathematical Journal 76, no. 3 (1994): 751–60. http://dx.doi.org/10.1215/s0012-7094-94-07630-8.

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18

Saritha, G. P., and S. Latha. "Coefficient Estimates for SAKAGUCHI Type Functions." International Journal of Mathematics Trends and Technology 11, no. 1 (2014): 10–23. http://dx.doi.org/10.14445/22315373/ijmtt-v11p502.

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19

ALI, MD FIROZ, and A. VASUDEVARAO. "Coefficient estimates of negative powers and inverse coefficients for certain starlike functions." Proceedings - Mathematical Sciences 127, no. 3 (2017): 449–62. http://dx.doi.org/10.1007/s12044-017-0328-5.

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20

Anand, Swati, Naveen Kumar Jain, and Sushil Kumar. "Certain Estimates of Normalized Analytic Functions." Mathematica Slovaca 72, no. 1 (2022): 85–102. http://dx.doi.org/10.1515/ms-2022-0006.

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Abstract Let ϕ be a normalized convex function defined on open unit disk D . For a unified class of normalized analytic functions which satisfy the second order differential subordination f′(z) + αzf″(z) ≺ ϕ(z) for all z ∈ D , we investigate the distortion theorem and growth theorem. Further, the bounds on initial logarithmic coefficients, inverse coefficient and the second Hankel determinant involving the inverse coefficients are examined.

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21

Răducanu, Dorina. "Coefficient Estimates for a Subclass of Starlike Functions." Mathematics 8, no. 10 (2020): 1646. http://dx.doi.org/10.3390/math8101646.

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In this note, we consider a subclass H3/2(p) of starlike functions f with f″(0)=p for a prescribed p∈[0,2]. Usually, in the study of univalent functions, estimates on the Taylor coefficients, Fekete–Szegö functional or Hankel determinats are given. Another coefficient problem which has attracted considerable attention is to estimate the moduli of successive coefficients |an+1|−|an|. Recently, the related functional |an+1−an| for the initial successive coefficients has been investigated for several classes of univalent functions. We continue this study and for functions f(z)=z+∑n=2∞anzn∈H3/2(p)

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22

Dahl, Christopher, Brent Harding, and Harry Wiant. "Quick Volume Coefficient Determination for Point Sampling." Northern Journal of Applied Forestry 24, no. 4 (2007): 314–16. http://dx.doi.org/10.1093/njaf/24.4.314.

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Abstract Grosenbaugh developed a formula for making quick point-sample estimates of sawtimber volume without measuring diameter. Local coefficients were created for a study area in central Pennsylvania hardwoods and were compared with volume estimates using a range of previously published coefficients. Results indicate that a general constant coefficient of 66 produces sawtimber volume estimates that are as good as using species-specific local coefficients for Pennsylvania hardwoods.

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23

Jackson, John E. "Estimation of Models with Variable Coefficients." Political Analysis 3 (1991): 27–49. http://dx.doi.org/10.1093/pan/3.1.27.

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The ordinary least squares (OLS) estimator gives biased coefficient estimates if coefficients are not constant for all cases but vary systematically with the explanatory variables. This article discusses several different ways to estimate models with systematically and randomly varying coefficients using estimated generalized least squares and maximum likelihood procedures. A Monte Carlo simulation of the different methods is presented to illustrate their use and to contrast their results to the biased results obtained with ordinary least squares. Several applications of the methods are discus

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24

Ravichandran, V., and Shelly Verma. "Estimates for coefficients of certain analytic functions." Filomat 31, no. 11 (2017): 3539–52. http://dx.doi.org/10.2298/fil1711539r.

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For -1 ? B ? 1 and A > B, let S*[A,B] denote the class of generalized Janowski starlike functions consisting of all normalized analytic functions f defined by the subordination z f'(z)/f(z)< (1+Az)/(1+Bz) (?z?<1). For -1 ? B ? 1 < A, we investigate the inverse coefficient problem for functions in the class S*[A,B] and its meromorphic counter part. Also, for -1 ? B ? 1 < A, the sharp bounds for first five coefficients for inverse functions of generalized Janowski convex functions are determined. A simple and precise proof for inverse coefficient estimations for generalized Janows

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25

Consiglieri, Luisa. "Explicit Estimates for Solutions of Mixed Elliptic Problems." International Journal of Partial Differential Equations 2014 (March 31, 2014): 1–16. http://dx.doi.org/10.1155/2014/845760.

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We deal with the existence of quantitative estimates for solutions of mixed problems to an elliptic second-order equation in divergence form with discontinuous coefficients. Our concern is to estimate the solutions with explicit constants, for domains in ℝn (n≥2) of class C0,1. The existence of L∞ and W1,q estimates is assured for q=2 and any q<n/(n-1) (depending on the data), whenever the coefficient is only measurable and bounded. The proof method of the quantitative L∞ estimates is based on the De Giorgi technique developed by Stampacchia. By using the potential theory, we derive W1,p es

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26

Castiglioni, P., G. Mancia, G. Parati, A. Pedotti, and M. Di Rienzo. "Critical Appraisal of Indices for the Assessment of Baroreflex Sensitivity." Methods of Information in Medicine 36, no. 04/05 (1997): 246–49. http://dx.doi.org/10.1055/s-0038-1636857.

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Abstract:The sequence technique and the spectral estimation of the alpha coefficient are currently employed for the assessment of “spontaneous” baroreflex sensitivity (BRS). The comparison of performance and effectiveness of these techniques is obtained by the analysis of systolic blood pressure (SBP) and pulse interval (PI) tracings recorded in conscious cats before and after baroreceptor denervation. Results indicate that (1) the average BRS estimates obtained by the sequence technique and by the alpha coefficient at the respiratory frequency are similar, (2) the alpha coefficients computed

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27

Mishra, A. K., та S. Barik. "Estimation of initial coefficients of certain λ-bi-starlike analytic functions". Asian-European Journal of Mathematics 09, № 03 (2016): 1650066. http://dx.doi.org/10.1142/s1793557116500662.

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For the class of [Formula: see text]-bi-starlike functions defined in the unit disc, we find bounds on the modulii of the first three Taylor–Maclaurin’s coefficients. Our estimate on the second and the third coefficients improve upon previously known bounds. The result on the fourth coefficient is new. Similarly, for the [Formula: see text]-bi-starlike functions defined in the exterior of the unit disc, we find estimates on the first three coefficients. Our findings on the zeroth and the first coefficients extend results known earlier. The results are consummated by refining the first coeffici

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28

Luyun, Jr, Roger, John Ruzzel Galoso, Rosa Delos Reyes, and Jeffrey Gonzales. "Determination of Rice Crop Coefficient Using Modified Microlysimeter." Philippine Journal of Agricultural and Biosystems Engineering 16, no. 1 (2020): 55–62. http://dx.doi.org/10.48196/016.01.2020.05.

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Accurate estimates of crop water requirements are needed in the proper design and management of irrigation systems, and to improve irrigation efficiency. These require knowledge of location-specific crop coefficients (Kc) together with climate-specific reference crop evapotranspiration (ETO). This study aimed to determine Kc values for PSB Rc18 rice variety at each growth stage. A modified microlysimeter setup was used to estimate crop evapotranspiration (ETC) while local climatic data was used in the FAOPenman-Monteith equation to determine ETO. The computed average Kc values during the initi

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29

Prokhorov, D. "Even coefficient estimates for bounded univalent functions." Annales Polonici Mathematici 58, no. 3 (1993): 267–73. http://dx.doi.org/10.4064/ap-58-3-267-273.

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30

Viana, Marios A. G. "Combined Bayesian estimates for the equicorrelation coefficient." Canadian Journal of Statistics 23, no. 1 (1995): 43–53. http://dx.doi.org/10.2307/3315550.

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31

Ularu, N. "Coefficient Estimates for Bi-Univalent Bazilevic Functions." Analysis in Theory and Applications 30, no. 3 (2014): 275–80. http://dx.doi.org/10.4208/ata.2014.v30.n3.3.

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32

Kamble, P. N., and M. G. Shrigan. "INITIAL COEFFICIENT ESTIMATES FOR BI-UNIVALENT FUNCTIONS." Far East Journal of Mathematical Sciences (FJMS) 105, no. 2 (2018): 271–82. http://dx.doi.org/10.17654/ms105020271.

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33

Fguiri, Ali, Naouel Daouas, M.-Sassi Radhouani, and Habib Ben Aissia. "Inverse analysis for the determination of heat transfer coefficient." Canadian Journal of Physics 91, no. 12 (2013): 1034–43. http://dx.doi.org/10.1139/cjp-2012-0520.

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The parallel hot wire technique is considered an effective and accurate means of experimental measurement of thermal conductivity. However, the assumptions of infinite medium and ideal infinitely thin and long heat source lead to some restrictions in the applicability of this technique. To make an effective experiment design, a numerical analysis should be carried out a priori, which requires a precise specification of the heating source strength and the heat transfer coefficient on the external surface. In this work, a more accurate physical and mathematical modeling of an experimental setup

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34

Rainey, Carlisle. "Transformation-Induced Bias: Unbiased Coefficients Do Not Imply Unbiased Quantities of Interest." Political Analysis 25, no. 3 (2017): 402–9. http://dx.doi.org/10.1017/pan.2017.11.

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Political scientists commonly focus on quantities of interest computed from model coefficients rather than on the coefficients themselves. However, the quantities of interest, such as predicted probabilities, first differences, and marginal effects, do not necessarily inherit the small-sample properties of the coefficient estimates. Indeed, unbiased coefficient estimates are neither necessary nor sufficient for unbiased estimates of the quantities of interest. I characterize this transformation-induced bias, calculate an approximation, illustrate its importance with two simulation studies, and

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35

Andersson, Björn, and Tao Xin. "Large Sample Confidence Intervals for Item Response Theory Reliability Coefficients." Educational and Psychological Measurement 78, no. 1 (2017): 32–45. http://dx.doi.org/10.1177/0013164417713570.

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In applications of item response theory (IRT), an estimate of the reliability of the ability estimates or sum scores is often reported. However, analytical expressions for the standard errors of the estimators of the reliability coefficients are not available in the literature and therefore the variability associated with the estimated reliability is typically not reported. In this study, the asymptotic variances of the IRT marginal and test reliability coefficient estimators are derived for dichotomous and polytomous IRT models assuming an underlying asymptotically normally distributed item p

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Bennett, Darin C., and Leslie E. Hart. "Metabolizable energy of fish when fed to captive Great Blue Herons (Ardea herodias)." Canadian Journal of Zoology 71, no. 9 (1993): 1767–71. http://dx.doi.org/10.1139/z93-251.

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The efficiency with which the gross energy content of herring (Clupea harengus), mackerel (Scomber scombrus), and trout (Oncorhynchus mykiss) is metabolized was determined for 11 captive Great Blue Herons (Ardea herodias). There was a linear relationship between apparent metabolized energy and gross energy intake for the mackerel and trout. This relationship was lower and more variable for herring. Estimates of the apparent metabolizable energy coefficient for mackerel and trout were affected by the level of energy intake. Correcting for endogenous energy losses in the excreta yielded estimate

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37

Lindquist, John L., David A. Mortensen, Sharon A. Clay, et al. "Stability of Corn (Zea mays)-Velvetleaf (Abutilon theophrasti) Interference Relationships." Weed Science 44, no. 2 (1996): 309–13. http://dx.doi.org/10.1017/s0043174500093930.

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The crop-weed interference relationship is a critical component of bioeconomic weed management models. Multi-year field experiments were conducted at five locations to determine the stability of corn-velvetleaf interference relationships across years and locations. Two coefficients (I and A) of a hyperbolic equation were estimated for each data set using nonlinear regression procedures. The I and A coefficients represent percent corn yield loss as velvetleaf density approaches zero, and maximum percent corn yield loss, respectively. The coefficient I was stable across years at two locations, b

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38

Ali, Md Firoz, and Allu Vasudevarao. "Coefficient estimates and integral mean estimates for certain classes of analytic functions." Comptes Rendus Mathematique 357, no. 5 (2019): 436–42. http://dx.doi.org/10.1016/j.crma.2019.04.013.

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39

Taylor, Marshall A. "Visualization strategies for regression estimates with randomization inference." Stata Journal: Promoting communications on statistics and Stata 20, no. 2 (2020): 309–35. http://dx.doi.org/10.1177/1536867x20930999.

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Coefficient plots are a popular tool for visualizing regression estimates. The appeal of these plots is that they visualize confidence intervals around the estimates and generally center the plot around zero, meaning that any estimate that crosses zero is statistically nonsignificant at least at the alpha level around which the confidence intervals are constructed. For models with statistical significance levels determined via randomization models of inference and for which there is no standard error or confidence intervals for the estimate itself, these plots appear less useful. In this artic

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Imron, Imron, Dadan Sunandar, Rommy Suprapto, and Nunuk Listyowati. "THE APPLICATION OF RAPD FINGERPRINTING TO ASSESS INBREEDING LEVELS IN THE CULTURED POPULATIONS OF GIANT FRESHWATER PRAWN, Macrobrachium rosenbergii." Indonesian Aquaculture Journal 5, no. 1 (2010): 73. http://dx.doi.org/10.15578/iaj.5.1.2010.73-82.

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Inbreeding has been one of central issues with regard to genetic quality of aquaculture species, including giant fresh water prawn (GFP). Conventional methods for the estimation of inbreeding level are available, such as pedigree analyses which requires a good pedigree record which, unfortunately, is rarely available. Likewise, microsatellite molecular markers commonly applied to obtain the coefficient inbreeding estimates are both laborious and expensive. Hence, an alternative method of inbreeding assessment which is relatively easy but reliable is in need. This study was aimed to explore the

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41

Lima, Lidiane Kely de, Magno Antonio Patto Ramalho, Ricardo Augusto Diniz Cabral Ferreira, and Ângela de Fátima Barbosa Abreu. "Repeatability of adaptability and stability parameters of common bean in unpredictable environments." Pesquisa Agropecuária Brasileira 48, no. 9 (2013): 1254–59. http://dx.doi.org/10.1590/s0100-204x2013000900009.

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The objective of this work was to estimate the repeatability of adaptability and stability parameters of common bean between years, within each biennium from 2003 to 2012, in Minas Gerais state, Brazil. Grain yield data from trials of value for cultivation and use common bean were analyzed. Grain yield, ecovalence, regression coefficient, and coefficient of determination were estimated considering location and sowing season per year, within each biennium. Subsequently, a analysis of variance these estimates was carried out, and repeatability was estimated in the biennia. Repeatability estimate

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42

Turchin, Peter, Thomas Currie, Christina Collins, et al. "An integrative approach to estimating productivity in past societies using Seshat: Global History Databank." Holocene 31, no. 6 (2021): 1055–65. http://dx.doi.org/10.1177/0959683621994644.

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This article reports the results of a collaborative effort to estimate agricultural productivities in past societies using Seshat: Global History Databank. We focus on 30 Natural Geographic Areas (NGAs) distributed over 10 major world regions (Europe, Africa, Southwest Asia, South Asia, Southeast Asia, East Asia, Central Eurasia, North America, South America, and Oceania). The conceptual framework that we use to obtain these estimates combines the influences of the production technologies (and how they change with time), climate change, and effects of artificial selection into a Relative Yield

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Rajanayaka, Channa, and Don Kulasiri. "Investigation of a parameter estimation method for contaminant transport in aquifers." Journal of Hydroinformatics 3, no. 4 (2001): 203–13. http://dx.doi.org/10.2166/hydro.2001.0019.

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Real world groundwater aquifers are heterogeneous and system variables are not uniformly distributed across the aquifer. Therefore, in the modelling of the contaminant transport, we need to consider the uncertainty associated with the system. Unny presented a method to describe the system by stochastic differential equations and then to estimate the parameters by using the maximum likelihood approach. In this paper, this method was explored by using artificial and experimental data. First a set of data was used to explore the effect of system noise on estimated parameters. The experimental dat

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44

Răducanu, Dorina. "On Coefficient Estimates for a Certain Class of Analytic Functions." Mathematics 11, no. 1 (2022): 12. http://dx.doi.org/10.3390/math11010012.

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In this paper, we consider a subclass SQ of normalized analytic functions f satisfying ℜf′(z)>1/2. For the functions in the class SQ, we determine upper bounds for a number of coefficient estimates, among which are initial coefficients, the second Hankel determinant, and the Zalcman functional. Upper estimates for higher-order Schwarzian derivatives are also obtained.

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45

Podvezko, Valentinas. "AGREEMENT OF EXPERT ESTIMATES." Technological and Economic Development of Economy 11, no. 2 (2005): 101–7. http://dx.doi.org/10.3846/13928619.2005.9637688.

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The application of multicriteria methods largely depends on the calculation of the criteria weights based on expert evaluation. The results obtained can be used for practical purposes if expert judgments are in good agreement. This may be determined by the concordance of a coefficient obtained by ranking the available alternatives. The paper considers a possibility to apply the concordance coefficient in cases when expert evaluation is not based on ranking. The calculations reveal the dependence of the agreement of expert estimates on a particular method used. The highest degree of agreement h

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Drake, R. E., S. Dhother, and J. C. Gabel. "Pulmonary microvascular reflection coefficients estimated with modified lymphatic washdown technique." American Journal of Physiology-Heart and Circulatory Physiology 272, no. 1 (1997): H382—H385. http://dx.doi.org/10.1152/ajpheart.1997.272.1.h382.

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Many investigators have used the lymphatic protein washdown technique to estimate the pulmonary microvascular membrane reflection coefficient to protein (sigma d). With that technique, the investigator causes a high microvascular filtration rate then estimates sigma d from the lymph and plasma protein concentrations. However the lymph may contain protein washed from the lung tissue, and the tissue protein may cause investigators to underestimate sigma d. Plasma protein osmotic pressure (IIc) may cause investigators to underestimate sigma d because IIc opposes fluid filtration. To minimize the

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Bulut, Serap. "Coefficient estimates for Libera type bi-close-to-convex functions." Mathematica Slovaca 71, no. 6 (2021): 1401–10. http://dx.doi.org/10.1515/ms-2021-0060.

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Abstract In a very recent paper, Wang and Bulut [A note on the coefficient estimates of bi-close-to-convex functions, C. R. Acad. Sci. Paris, Ser. I 355 (2017), 876–880] determined the estimates for the general Taylor-Maclaurin coefficients of functions belonging to the bi-close-to-convex function class. In this study, we introduce the class of Libera type bi-close-to-convex functions and obtain the upper bounds for the coefficients of functions belonging to this class. Our results generalize the results in the above mentioned paper.

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Makinde, Deborah Olufunmilayo. "Coefficient Estimates for Generalized Analytic Bi-Univalent Functions." Academic Journal of Applied Mathematical Sciences, no. 512 (December 25, 2019): 173–78. http://dx.doi.org/10.32861/ajams.512.173.178.

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For the normalized analytic functions of the form..... .We obtain the initial coefficient estimates for the subclassThe relationship with some coefficient estimates in the literature with that of the subclass above was also considered.

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Zaprawa, Paweł. "Estimates of Initial Coefficients for Bi-Univalent Functions." Abstract and Applied Analysis 2014 (2014): 1–6. http://dx.doi.org/10.1155/2014/357480.

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We consider the Fekete-Szegö inequalities for classes which were defined by Murugusundaramoorthy et al. (2013). These inequalities will result in bounds of the third coefficient which are better than these obtained by Murugusundaramoorthy et al. (2013). Moreover, we discuss two other classes of bi-univalent functions. The estimates of initial coefficients in these classes are obtained.

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Gupta, Krishna Kumar, Manoj Kumar Singh, Sri Man Singh, and Amod Kumar Raghuvanshi. "Genetic Variability, Heritability, Correlation and Path Analysis of Quantitative Traits in Indian Mustard (Brassica juncea L.)." Journal of Experimental Agriculture International 47, no. 6 (2025): 27–33. https://doi.org/10.9734/jeai/2025/v47i63467.

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The present study assesses the genetic variability, correlation coefficient, heritability and path analysis for quantitative traits in Indian mustard (Brassica juncea L.). High heritability coupled with high genetic advance was found for seed yield per plot, seed yield per plant, number of siliqua per plant, and test weight, suggesting due importance of these traits for selection in a breeding program. The phenotypic correlation studies revealed that seed yield per plant exhibited a significant positive correlation with plant height, number of primary branches per plant, number of secondary br

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