Готові списки джерел за темами / Non-linear growth function

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Добірка наукової літератури з теми "Non-linear growth function"

Автор: Grafiati

Опубліковано: 3 червня 2025

Оновлено: 31 липня 2025

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Статті в журналах з теми "Non-linear growth function"

Hruby, Milan, Melvin L. Hamre, and Craig N. Coon. "Non-Linear and Linear Function in Body Protein Growth." Journal of Applied Poultry Research 5, no. 2 (1996): 109–15. http://dx.doi.org/10.1093/japr/5.2.109.

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Tırınk, Cem, Hasan Önder, Sabri Yurtseven, and Zeliha Kaya Akil. "Comparison of some non-linear functions to describe the growth for Linda geese with CART and XGBoost algorithms." Czech Journal of Animal Science 67, No. 11 (2022): 454–64. http://dx.doi.org/10.17221/129/2022-cjas.

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The aim of this study was to determine the best non-linear function describing the growth of the Linda goose breed. To achieve this aim, five non-linear functions, such as exponential, logistic, von Bertalanffy, Brody and Gompertz, were employed to define the live weight-age relationship for male and female Linda geese. In the study, 2 397 body weight-age records from 75 females and 66 males collected from three days to 17 weeks of age were evaluated using the “easynls” and “nlstools” packages for growth modelling of the Linda goose in R software. Each model was analysed in the live weight rec

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Jaidane, Rached. "Weigthed elliptic equation of Kirchhoff type with exponential non linear growthWeigthed elliptic equation of Kirchhoff type with exponential non linear growth." Annals of the University of Craiova - Mathematics and Computer Science Series 49, no. 2 (2022): 309–37. http://dx.doi.org/10.52846/ami.v49i2.1572.

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"This work is concerned with the existence of a positive ground state solution for the following non local weighted problem \begin{equation*} \displaystyle \left\{ \begin{array}{rclll} L_{(\sigma,V)}u &= & \displaystyle f(x,u)& \mbox{in} \ B \\ u &>&0 &\mbox{in }B\\ u&=&0 &\mbox{on } \partial B, \end{array} \right. \end{equation*} where $$L_{(\sigma,V)}u:=g(\int_{B}(\sigma(x)|\nabla u|^{N}+V(x)|u|^{N})dx)\big[-\textmd{div} (\sigma(x)|\nabla u|^{N-2} \nabla u)+V(x)|u|^{N-2}u\big],$$ B is the unit ball of $\mathbb{R}^{N}$, $ N>2$, $\sigma(x)=\Big(\log(\f

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Alexandrov, D. V., A. P. Malygin, and I. V. Alexandrova. "Solidification of leads: approximate solutions of non-linear problem." Annals of Glaciology 44 (2006): 118–22. http://dx.doi.org/10.3189/172756406781811213.

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AbstractWe present new analytical results relating to the growth and evolution of sea ice. It is noteworthy that thin sea ice plays a central role in the surface heat and mass balance of the Arctic Ocean. In order to describe these balances, we analyze highly resolved temperature data taken through the air/sea/ice interface during the transition from an ice-free to an ice-covered Arctic Ocean surface. Our detailed analysis of the field data is based on the classical model of a mushy layer, which is modified in order to obtain analytical solutions in explicit form (so, for example, ice thicknes

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Gundersen, Gary G., Enid M. Steinbart, and Shupei Wang. "Growth and oscillation theory of non-homogeneous linear differential equations." Proceedings of the Edinburgh Mathematical Society 43, no. 2 (2000): 343–59. http://dx.doi.org/10.1017/s0013091500020964.

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AbstractWe investigate the growth and the frequency of zeros of the solutions of the differential equation f(n) + Pn–1 (z) f(n–1) + … + P0 (z) f = H (z), where P0 (z), P1(z), …, Pn–1(z) are polynomials with P0 (z) ≢ 0, and H (z) ≢ 0 is an entire function of finite order.

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Tarasov, Vasily E. "Non-Linear Macroeconomic Models of Growth with Memory." Mathematics 8, no. 11 (2020): 2078. http://dx.doi.org/10.3390/math8112078.

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In this article, two well-known standard models with continuous time, which are proposed by two Nobel laureates in economics, Robert M. Solow and Robert E. Lucas, are generalized. The continuous time standard models of economic growth do not account for memory effects. Mathematically, this is due to the fact that these models describe equations with derivatives of integer orders. These derivatives are determined by the properties of the function in an infinitely small neighborhood of the considered time. In this article, we proposed two non-linear models of economic growth with memory, for whi

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Kaplan, Selçuk, and Eser Kemal Gürcan. "Comparison of growth curves using non-linear regression function in Japanese quail." Journal of Applied Animal Research 46, no. 1 (2016): 112–17. http://dx.doi.org/10.1080/09712119.2016.1268965.

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Cano, G., M. Blanco, I. Casasús, X. Cortés-Lacruz, and D. Villalba. "Comparison of B-splines and non-linear functions to describe growth patterns and predict mature weight of female beef cattle." Animal Production Science 56, no. 11 (2016): 1787. http://dx.doi.org/10.1071/an15089.

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The objective of this study was to compare the ability of Basis spline (B-spline) models and five non-linear functions (Richards, Brody, Von Bertalanffy, Gompertz and Logistic) to describe the growth of females of a beef cattle breed and predict cow mature weight (A). Random regression models that included animal variation within function parameters were fitted using mixed model procedures. Comparisons were made among these functions for goodness of fit, standardised residuals and biological interpretability of the growth curve parameters. The B-spline function showed the best goodness of fit

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Ali, A., K. Javed, I. Zahoor, and K. M. Anjum. "Determination of the best non-linear function to describe the growth of Kajli sheep." South African Journal of Animal Science 50, no. 3 (2020): 452–59. http://dx.doi.org/10.4314/sajas.v50i3.12.

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The aim of the present study was to determine the best non-linear growth function to describe the growth of Kajli sheep. For this aim, the Brody, von Bertalanffy, Logistic, and Gompertz models were used to describe the sigmoidal relationship between bodyweight and age of the Kajli sheep. The records obtained from the Livestock Experiment Station, Khushab, were collected between 2007 and 2018. The records comprised 9864 age-weight observations (300 for male, 9564 for female, 7392 for single, 2388 for twin, and 84 for triplet lambs), which extended from birth to 12 months old. Candidate non-line

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Cano, G., M. Blanco, I. Casasús, X. Cortés-Lacruz, and D. Villalba. "Corrigendum to: Comparison of B-splines and non-linear functions to describe growth patterns and predict mature weight of female beef cattle." Animal Production Science 56, no. 12 (2016): 2161. http://dx.doi.org/10.1071/an15089_co.

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Дисертації з теми "Non-linear growth function"

Persson, Håkan. "Studies of the Boundary Behaviour of Functions Related to Partial Differential Equations and Several Complex Variables." Doctoral thesis, Uppsala universitet, Analys och sannolikhetsteori, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-251325.

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This thesis consists of a comprehensive summary and six scientific papers dealing with the boundary behaviour of functions related to parabolic partial differential equations and several complex variables. Paper I concerns solutions to non-linear parabolic equations of linear growth. The main results include a backward Harnack inequality, and the Hölder continuity up to the boundary of quotients of non-negative solutions vanishing on the lateral boundary of an NTA cylinder. It is also shown that the Riesz measure associated with such solutions has the doubling property. Paper II is concerned w

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Частини книг з теми "Non-linear growth function"

Gaster, M. "A Non-Linear Transfer Function Description of Wave Growth in a Boundary Layer." In Laminar-Turbulent Transition. Springer Berlin Heidelberg, 1985. http://dx.doi.org/10.1007/978-3-642-82462-3_14.

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Fogarty, Michael J., and Jeremy S. Collie. "Density-Dependent Population Growth." In Fishery Ecosystem Dynamics. Oxford University Press, 2020. http://dx.doi.org/10.1093/oso/9780198768937.003.0003.

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The observation that no population can grow indefinitely and that most populations persist on ecological timescales implies that mechanisms of population regulation exist. Feedback mechanisms include competition for limited resources, cannibalism, and predation rates that vary with density. Density dependence occurs when per capita birth or death rates depend on population density. Density dependence is compensatory when the population growth rate decreases with population density and depensatory when it increases. The logistic model incorporates density dependence as a simple linear function.

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Çadırlı, Emin, Hasan Kaya, and Uğur Büyük. "A Comprehensive Investigation on the Effect of Growth Rate and Composition on Dendritic Microstructure and Arm Spacings in Directionally Solidified Al-Zn Alloys." In Makine Mühendisliğinde Yenilikçi İmalat Teknolojileri ve Malzeme Bilimi. Özgür Yayınları, 2025. https://doi.org/10.58830/ozgur.pub770.c3184.

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Cellular and dendritic microstructures formed during the solidification of alloy systems lead to a non-uniform distribution of solute elements, i.e., microsegregation, significantly influencing the final properties of the material. The scale and morphology of microsegregation are primarily characterized by primary (λ₁) and secondary (λ₂) dendrite arm spacings. This study investigates the directional solidification behavior of three Al-Zn binary alloys with different compositions: Al-7wt.%Zn, Al-10wt.%Zn, and Al-20wt.%Zn. Alloy samples, prepared under vacuum using high-purity (99.99%) starting

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Bulatov, Vasily, and Wei Cai. "Kinetic Monte Carlo Method." In Computer Simulations of Dislocations. Oxford University Press, 2006. http://dx.doi.org/10.1093/oso/9780198526148.003.0014.

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The PN model discussed in the preceding chapter is a continuum approach that requires some atomistic input to account for non-linear interactions in the dislocation core. In this chapter, we introduce yet another continuum model that uses atomistic input for a different purpose. The kinetic Monte Carlo (kMC) model does not consider any details of the core structure but instead focuses on dislocation motion on length and time scales far greater than those of the atomistic simulations. The model is especially effective for diamond-cubic semiconductors and other materials in which dislocation mot

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Turki, Ahmed Ibrahim, Sushma Allur, Durga Praveen Deevi, and Punitha Palanisamy. "Software Development and Best Practices." In Advances in Systems Analysis, Software Engineering, and High Performance Computing. IGI Global, 2024. http://dx.doi.org/10.4018/979-8-3693-3964-0.ch007.

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The growth of science and technology has made it feasible to create software programmes that can quickly solve problems that used to take a long time to resolve. Non-linear equations frequently arise in various complex difficulties that we encounter in our everyday existence. This study aims to assess the effectiveness of the Secant technique and the Newton Raphson method in solving non-linear equations in Python. The programming test was conducted three times with different coefficients and starting values. Another objective of this research is to assess the effectiveness of numerical integra

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Posey, Darrell Addison. "Fragmenting Cosmic Connections: Converting Nature Into Commodity." In Globalization, Globalism, Environments, and Environmentalism. Oxford University Press, 2004. http://dx.doi.org/10.1093/oso/9780199264520.003.0013.

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Most contributions to this volume frame emerging ‘consciousness of connections’ through international politics, economics and trade, urban/ rural exchanges, social movements, environmental transformations, and global citizenship and governance. These views reflect a remarkably linear world-view of dialectics such as: past/present, growth/sustainability, internal/external, and production/recycle. Langton (Chapter 9), however, introduces the idea of symbolic environmental space, or spacialization, which is expressed in the Aboriginal concept of totem. Totem defines other dimensions of knowing th

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Adewale Ajao, Lukman, Emmanuel Adewale Adedokun, Joseph Ebosetale Okhaifoh, and Habib Bello Salau. "A Nonlinear Fuzzy Controller Design using Lyapunov Functions for an Intelligent Greenhouse Management in Agriculture." In Technology in Agriculture [Working Title]. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.98409.

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The importance of agronomists in large-scale production of food crops under considerate environmental weather conditions cannot be overemphasized. However, emerging global warming is a threat to food security due to its effect on soil depletion and ecosystem degradation. In this work, the design of the proposed intelligent context is to observe, model and simulate greenhouse control system activity towards the management of the farm crop growth as the affected salient environmental parameters. Characteristically, temperature and humidity are the major factors that determine the crop yield in a

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Chu, Kai-Chun, Kuo-Chi Chang, Hsiao-Chuan Wang, Fu-Hsiang Chang, Yuh-Chung Lin, and Tsui-Lien Hsu. "Application of Advanced Framework Technology in Smart Cities to Improve Resource Utilization." In Smart Cities [Working Title]. IntechOpen, 2020. http://dx.doi.org/10.5772/intechopen.94553.

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Nowadays, the application technology and demand are growth; there have been millions of solutions for user communication in smart cities. However, the quality of the autonomy of handheld devices and the information exchange of applications are functions of requesting services or participating in communications. Therefore, it is very difficult and tedious to implement resource management and control in such an environment. This study here proposes distributed cyber-physical systems (CPS) for agent-based middleware framework (AMF) using to achieve technology, thereby improving the reliability of

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Olivares-Benitez, Elias, Pilar Novo Ibarra, Samuel Nucamendi-Guillén, and Omar G. Rojas. "Multi-Objective Territory Design for Sales Managers of a Direct Sales Company." In Advances in Civil and Industrial Engineering. IGI Global, 2019. http://dx.doi.org/10.4018/978-1-5225-8223-6.ch007.

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This chapter presents a case study to organize the sales territories for a company with 11 sales managers to be assigned to 111 sales coverage units in Mexico. The assignment problem is modeled as a mathematical program with two objective functions. One objective minimizes the maximum distance traveled by the manager, and the other objective minimizes the variation of the sales growth goals with respect to the national average. To solve the bi-objective non-linear mixed-integer program, a weights method is selected. Some instances are solved using commercial software with long computational ti

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Тези доповідей конференцій з теми "Non-linear growth function"

Mazzella, Joseph, Thomas Hayden, Haralampos Tsaprailis, and Len Krissa. "A Method for Extrapolating ISO9223 Response Functions." In CORROSION 2019. NACE International, 2019. https://doi.org/10.5006/c2019-12834.

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Absrract Estimating corrosion growth rate is a non-linear, multi-dimensional (space and time) challenge. Above-ground outdoor assets are affected by natural atmospheric factors such as climate, salinity and human contributions such as pollution. International Standard ISO9223(1) provides guidance, including response functions and a classification schema (C1 thru C5) for estimating corrosion risk as a function of three variables: weather (temperature and humidity), dry deposition of sulfides, and dry deposition of chlorides. Climate data is widely available but dry deposition data is either not

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Taylor, Christopher, Leslie Bland, Gerald Frankel, et al. "Predicting Corrosion Fatigue Behavior Using a Bayesian Network That Integrates Microstructure, Electrochemistry and Fracture Mechanics." In CORROSION 2018. NACE International, 2018. https://doi.org/10.5006/c2018-11228.

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Abstract The localized corrosion and cracking of lightweight alloys is a complex, non-linear and stochastic function of the variables concerning materials composition, thermal and mechanical processing, and environmental parameters such as solution chemistry, temperature, electrochemical potential and mechanical stress. Integrating these variables into a coherent model poses a ‘grand challenge’ in corrosion science and engineering. In this conference paper, a Bayesian network approach that integrates these variables into a single model is presented based upon pre-existing models taken from the

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Omishore, Abayomi. "Stochastic modelling of fatigue crack growth." In The 13th international scientific conference “Modern Building Materials, Structures and Techniques”. Vilnius Gediminas Technical University, 2019. http://dx.doi.org/10.3846/mbmst.2019.075.

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The article deals with the influence of the skewness of quasi-constant stress range on the fatigue resistance of a steel bridge member subjected to multiple repeated loading. It is shown that it is necessary to know the statistical characteristics and type of probability density function relatively accurately in the case of quasi-constant stress range, otherwise the estimation of the fatigue resistance may be inaccurate. The fatigue resistance is studied using linear fracture mechanics. The random characteristics of the steel member are simulated using the Latin Hypercube Sampling method. The

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Al Khamees, Ali, Rodolfo Phillips Guerrero, and Meshari Alodah. "Assessment of Condensate Banking Growth Using Advanced Pressure Transient Analysis." In Middle East Oil, Gas and Geosciences Show. SPE, 2023. http://dx.doi.org/10.2118/213388-ms.

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Abstract Condensate banking is a process that occurs in gas wells when the reservoir pressure goes below the dew point. The depletion process introduces an additional fluid complexity, which complicates reservoir dynamics and reduces ultimate recovery. In addition, it hinders well performance and productivity due to its growth over production time. Estimating the current extent of condensate banking and predicting its progression over time plays a major role in optimizing well performance. Using single-phase pressure transient analysis to account for different mobility regions is widely practi

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Tsuji, Tomoaki. "Multiple Void Growth Simulations in the Hyper-Elastic Material." In ASME/JSME 2004 Pressure Vessels and Piping Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/pvp2004-2741.

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If the hydrostatic tensile load is applied to a hyper-elastic material, the void initiates when the load exceeds the critical value. On the other hand, it is important to study multiple void growth phenomena, in order to consider the fracture by coalescence of voids. In this paper, we study the growth of multiple voids in the hyper-elastic material. The material is characterized by the energy function as the compressive material. Some experiments for the rubber, as a hyper-elastic material, are proceeded, in order to obtain these mechanical properties in the energy function. A square cell with

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Qasim. M. ALSARAI, Tamarah, Mohammed H.DAKHEEL, and Hoida Mohammed AL-SOUDANI. "PREDICTION OF WEIGHT IN IRAQI DOMESTIC YOUNG DELL FROM MILK PRODUCTION AND COMPOSITION IN THEIR MOTHERS AND DESCRIPTION OF GROWTH CURVE WITH NON-LINEAR FUNCTION." In VII. INTERNATIONAL SCIENTIFIC CONGRESSOF PURE,APPLIEDANDTECHNOLOGICAL SCIENCES. Rimar Academy, 2023. http://dx.doi.org/10.47832/minarcongress7-5.

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A study has been carried out on a sample of 102 Iraqi local dell and their offspring for the period 2021-2022 to study the growth prediction of lambs through the production of milk and its main components, the results obtained from this study after adjusting for factors are as follows., there is a positive relationship between weight gain at weaning age and at 6 months and an increase in the percentage of protein in milk at a significant (P≤0.05)and (P≤0.01) respectively. The regression coefficient of weight gain for age at weaning and age at 6 months on maternal milk production was by 3.208 a

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McFarland, Jacob A., Devesh Ranjan, and Jeffery A. Greenough. "Simulations and Analysis of Shock Accelerated Inhomogenous Flows With and Without Reshock." In ASME 2012 Fluids Engineering Division Summer Meeting collocated with the ASME 2012 Heat Transfer Summer Conference and the ASME 2012 10th International Conference on Nanochannels, Microchannels, and Minichannels. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/fedsm2012-72309.

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A computational study of the Richtmyer-Meshkov instability is presented for an inclined interface perturbation in support of experiments being performed at the Texas A&M shock tube facility. The study is comprised of simulations performed using the Arbitrary Lagrange Eulerian (ALE) code called ARES. These simulations were performed to late times after reshock with varying parameters including inclination angle, and incident shock Mach number. The inclination angle was varied over a wide range which provided initial interface perturbations in both the linear and non-linear regimes. Recent w

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Hummel, Tobias, Klaus Hammer, Pedro Romero, Bruno Schuermans, and Thomas Sattelmayer. "Low-Order Modeling of Nonlinear High-Frequency Transversal Thermoacoustic Oscillations in Gas Turbine Combustors." In ASME Turbo Expo 2016: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/gt2016-57913.

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This paper analyzes transversal thermoacoustic oscillations in an experimental gas turbine combustor utilizing dynamical system theory. Limit cycle acoustic motions related to the first linearly unstable transversal mode of a given 3D combustor configuration are modeled, and reconstructed by means of a low order dynamical system simulation. The source of nonlinearity is solely allocated to flame dynamics, saturating the growth of acoustic amplitudes, while the oscillation amplitudes are assumed to always remain within the linearity limit. First, a Reduced Order Model (ROM), which reproduces th

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Zhao, Zhengwei Jack, and Irewole Wally Orisamolu. "Probabilistic Fatigue Damage Assessment for Small Crack Growth." In ASME 2000 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2000. http://dx.doi.org/10.1115/imece2000-2647.

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Abstract Fatigue and fracture are typical random phenomena due to various uncertainty sources, including material property, initial flaw and crack shape, structural configuration and geometry around crack tip, load fluctuation, and other environmental factors. As contrast to the most commonly used probabilistic fatigue growth models, which are built based on simplified fatigue crack growth law, a framework of probabilistic fracture mechanics based fatigue damage assessment methodology for small crack propagation is presented here. The proposed modeling is developed based on a comprehensive fat

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Prueter, Phillip E., David J. Dewees, and Robert G. Brown. "An R5 Based Creep-Fatigue Critical Flaw Assessment of an In-Service Reformer Piping Tee Using Finite Element Analysis." In ASME 2014 Symposium on Elevated Temperature Application of Materials for Fossil, Nuclear, and Petrochemical Industries. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/etam2014-1034.

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This study employs three dimensional (3D) non-linear, finite element analysis (FEA) to supplement a critical flaw sizing assessment of an in-service reformer piping tee. The analysis is guided by the EDF (Électricité de France) Assessment Procedure R5 (formerly from British Energy Generation LTD. or BEGL) as well as Part 10 of API 579-1/ASME FFS-1. Specifically, Volume 4/5 of R5, which addresses crack growth, is used to determine the largest permissible flaw as a function of operational cycles and time at temperature. Required stresses are generated using FEA as well as the simplified referenc

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Звіти організацій з теми "Non-linear growth function"

Reyes-Tagle, Gerardo, and Jorge E. Muñoz-Ayala. Debt and Economic Growth: Does Size Matter? Evidence from Dynamic Parametric and Static Non-parametric Approaches. Inter-American Development Bank, 2023. http://dx.doi.org/10.18235/0004818.

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This paper provides new evidence on the effect of debt on economic growth through two alternative methodological approaches. On the one hand, by using a panel error correction model with a sample of 130 countries between 1980 and 2020, we found evidence of the existence of a range of debt-to-GDP ratios for which economic growth remains positive after debt surges. This threshold may lie between 32 percent and 136 percent, with optimal economic growth achieved at an 84 percent debt-to-GDP ratio for the whole sample of countries. The error correction form for the economic growth was dynamically c

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Alchanatis, Victor, Stephen W. Searcy, Moshe Meron, W. Lee, G. Y. Li, and A. Ben Porath. Prediction of Nitrogen Stress Using Reflectance Techniques. United States Department of Agriculture, 2001. http://dx.doi.org/10.32747/2001.7580664.bard.

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Commercial agriculture has come under increasing pressure to reduce nitrogen fertilizer inputs in order to minimize potential nonpoint source pollution of ground and surface waters. This has resulted in increased interest in site specific fertilizer management. One way to solve pollution problems would be to determine crop nutrient needs in real time, using remote detection, and regulating fertilizer dispensed by an applicator. By detecting actual plant needs, only the additional nitrogen necessary to optimize production would be supplied. This research aimed to develop techniques for real tim

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Moghimi, Gholamreza, and Nicos Makris. Response Modification of Structures with Supplemental Rotational Inertia. Pacific Earthquake Engineering Research Center, University of California, Berkeley, CA, 2024. http://dx.doi.org/10.55461/tihv1701.

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Tall, multistory, buildings are becoming increasingly popular in large cities as a result of growing urbanization trends (United Nations Department of Economic and Social Affairs 2018). As cities continue to grow, many of them along the coasts of continents which are prone to natural hazards, the performance of tall, flexible buildings when subjected to natural hazards is a pressing issue with engineering relevance. The performance of structures when subjected to dynamic loads can be enhanced with various response modification strategies which have been traditionally achieved with added stiffn

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