Gotowe bibliografie tematyczne / IDF equations

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Gotowa bibliografia na temat „IDF equations”

Autor: Grafiati

Data publikacji: 4 czerwca 2021

Data aktualizacji: 1 lutego 2022

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Artykuły w czasopismach na temat "IDF equations"

Sabino, Marlus, Adilson Pacheco de Souza, Eduardo Morgan Uliana, Luana Lisboa, Frederico Terra de Almeida, and Cornélio Alberto Zolin. "Intensity-duration-frequency of maximum rainfall in Mato Grosso State." Ambiente e Agua - An Interdisciplinary Journal of Applied Science 15, no. 1 (2020): 1. http://dx.doi.org/10.4136/ambi-agua.2373.

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Intensive rainfall is an important meteorological variable that is of technical interest in hydraulic projects. This study therefore generated Intensity-Duration-Frequency equations (IDF) for 14 weather stations in Mato Grosso State, based on pluviograph analysis. Annual maximum rainfall data regarding 10-to-1440-minute long rainfall events were collected from digitized daily pluviographs. Data adherence to the generalized extreme value distribution (GEV) was checked through the Kolmogorov-Smirnov test at a 20% significance level. Next, the maximum probable rainfall for return periods such as

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Campos, José Nilson B., Ticiana Marinho de Carvalho Studart, Francisco de Assis de Souza Filho, and Victor Costa Porto. "On the Rainfall Intensity–Duration–Frequency Curves, Partial-Area Effect and the Rational Method: Theory and the Engineering Practice." Water 12, no. 10 (2020): 2730. http://dx.doi.org/10.3390/w12102730.

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This research evaluates the partial-area effect and its relationship with the rainfall intensity–duration–frequency (IDF) equations. In the Rational Method, if the critical rainfall duration is shorter than the time of concentration, the partial-area effect occurs. We proved that the partial area could exist for the general ID equation i=a/(b+td)c, only when c>1. For these equations, in the application of the Rational Method, the maximum discharge at basin outlet occurs for rainfall duration (td) equal to b/(c−1). Nevertheless, for that case, the Depth Duration Frequency (DDF) has a maximum

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Back, Álvaro José, Sabrina Baesso Cadorin, and Sérgio Luciano Galatto. "Extreme rainfall and IDF equations for Alagoas State, Brazil." Ambiente e Agua - An Interdisciplinary Journal of Applied Science 15, no. 6 (2020): 1. http://dx.doi.org/10.4136/ambi-agua.2544.

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Intensity-duration-frequency (IDF) equations have important applications in several engineering areas such as urban drainage designs, hydrological modeling, and soil conservation projects. This study analyzes the annual maximum series and fits IDF equations for 44 rainfall stations in Alagoas State, Brazil. We adjusted parameters of the Gumbel distribution (GD) and the Generalized Extreme Value (GEV) distribution. The fitting of the observed data to the probability distributions, as well as the selection of the best distribution, were based on the Kolmogorov-Smirnov and Anderson-Darling tests

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Back, Álvaro José, Alan Henn, and José Luiz Rocha Oliveira. "Heavy rainfall equations for Santa Catarina, Brazil." Revista Brasileira de Ciência do Solo 35, no. 6 (2011): 2127–34. http://dx.doi.org/10.1590/s0100-06832011000600027.

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Knowledge of intensity-duration-frequency (IDF) relationships of rainfall events is extremely important to determine the dimensions of surface drainage structures and soil erosion control. The purpose of this study was to obtain IDF equations of 13 rain gauge stations in the state of Santa Catarina in Brazil: Chapecó, Urussanga, Campos Novos, Florianópolis, Lages, Caçador, Itajaí, Itá, Ponte Serrada, Porto União, Videira, Laguna and São Joaquim. The daily rainfall data charts of each station were digitized and then the annual maximum rainfall series were determined for durations ranging from 5

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Damé, Rita de C. F., Claudia F. A. Teixeira-Gandra, Francisco A. Villela, Jacira P. dos Santos, and Antoniony S. Winkler. "Analysis of the relationship intensity, duration, frequency of disaggregated daily rainfall in southern Rio Grande do Sul, Brazil." Engenharia Agrícola 34, no. 4 (2014): 660–70. http://dx.doi.org/10.1590/s0100-69162014000400006.

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The intensity, duration, and frequency relationship (IDF) of rainfall occurrence may be done through continuous records of pluviographs or daily pluviometer values . The objective of this study was to estimate the intensity-duration-frequency relationships of precipitation, using the method of daily rainfall disaggregation, at weather stations located to the southern half of the state of Rio Grande do Sul; comparing them with those obtained by rain gauge records, in places considered homogeneous from the meteorological point of view. The IDF equation parameters were estimated from daily rainfa

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Al Islam, Mahmud, and Hasibul Hasan. "Generation of IDF Equation from Catchment Delineation Using GIS." Civil Engineering Journal 6, no. 3 (2020): 540–47. http://dx.doi.org/10.28991/cej-2020-03091490.

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The study was intended to find out the catchment characteristics of an area and the IDF (Intensity-Duration-Frequency) analysis of rainfall of that area using Gumbel method and Log Pearson type III method. In different studies, the IDF equations are generated for an area without acknowledging the catchment, stream length of the catchment and the time of concentration. In our study the Digital Elevation Map (DEM) of Dhaka was used. The DEM was analyzed using QGIS to find out different catchments, catchment area, catchment slope, stream length etc. The rainfall data of 18 years was collected fro

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Silva, Simone Rosa da, and George Rodrigues De Sousa Araújo. "Algoritmo para Determinação da Equação de Chuvas Intensas (Algorithm to Determine the Equation of Intense Rain)." Revista Brasileira de Geografia Física 6, no. 5 (2013): 1371. http://dx.doi.org/10.26848/rbgf.v6i5.233110.

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Estudos hidrológicos regionais são necessários em obras de engenharia relacionadas ao planejamento e aproveitamento dos recursos hídricos, pois eventos extremos de precipitações estão diretamente relacionados com os custos e a segurança das obras de aproveitamento hídrico, tais como: sistema de drenagem de águas pluviais, canais e bacias de detenção. O objetivo principal deste trabalho foi desenvolver e aplicar um algoritmo para determinação de parâmetros das equações IDF - Intensidade-Duração-Frequência, visando tornar o processo ágil a partir dos dados disponíveis de precipitação. Foi elabor

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Cruz, Josias Da Silva, Igor Henrique Coelho Alves, Cleidson Da Silva Alves, Nélio Moura de Figueiredo, Evanice Pinheiro Gomes, and Carlos Eduardo Aguiar de Souza Costa. "EQUAÇÕES DE CHUVAS INTENSAS COM DADOS CPC MORPHING TECHNIQUE (CMORPH) PARA O MUNICÍPIO DE ALTAMIRA - PA." IRRIGA 24, no. 1 (2019): 192–207. http://dx.doi.org/10.15809/irriga.2019v24n1p192-207.

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EQUAÇÕES DE CHUVAS INTENSAS COM DADOS CPC MORPHING TECHNIQUE (CMORPH) PARA O MUNICÍPIO DE ALTAMIRA - PA   JOSIAS DA SILVA CRUZ1; IGOR HENRIQUE COELHO ALVES1; CLEIDSON DA SILVA ALVES1; NELIO MOURA DE FIGUEIREDO2; EVANICE PINHEIRO GOMES1 E CARLOS EDUARDO AGUIAR DE SOUZA COSTA1  1Programa de Pós-Graduação de Engenharia de Civil, Universidade Federal do Pará, Rua Augusto Corrêa, 1 - Guamá, 66075-110, Belém – Pará – Brasil. E-mail: josias.cruz75@gmail.com, igor_alves12@yahoo.com.br, cleidsonalves.eng.mecanica@gmail.com, vava51.gomes@gmail.com, eduardoaguiarsc@hotmail.c

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Ehiorobo, J. O., O. C. Izinyon, and R. I. Ilaboya. "Development of Intensity Duration Frequency (IDF) Curves for Rainfall Prediction within the Middle Niger River Basin." Nigerian Journal of Environmental Sciences and Technology 4, no. 2 (2020): 382–97. http://dx.doi.org/10.36263/nijest.2020.02.0231.

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Rainfall Intensity-Duration-Frequency (IDF) relationship remains one of the mostly used tools in hydrology and water resources engineering, especially for planning, design and operations of water resource projects. IDF relationship can provide adequate information about the intensity of rainfall at different duration for various return periods. The focus of this research was to develop IDF curves for the prediction of rainfall intensity within the middle Niger River Basin (Lokoja and Ilorin) using annual maximum daily rainfall data. Forty (40) year’s annual maximum rainfall data ranging from 1

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Choi, Hyunjun, Jung Yeol Sung, and Beob Gyun Kim. "Neutral detergent fiber rather than other dietary fiber types as an independent variable increases the accuracy of prediction equation for digestible energy in feeds for growing pigs." Asian-Australasian Journal of Animal Sciences 33, no. 4 (2020): 615–22. http://dx.doi.org/10.5713/ajas.19.0103.

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Objective: The objectives were to investigate correlations between energy digestibility (digestible energy [DE]:gross energy [GE]) and various fiber types including crude fiber (CF), total dietary fiber (TDF), soluble dietary fiber (SDF), insoluble dietary fiber (IDF), neutral detergent fiber (NDF), and acid detergent fiber (ADF), and to develop prediction equations for estimating DE in feed ingredients and diets for growing pigs.Methods: A total of 289 data with DE values and chemical composition of feeds from 39 studies were used to develop prediction equations for DE. The equations were val

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Rozprawy doktorskie na temat "IDF equations"

Castillo, Jean M. "Duration-rainfall intensity equations : study of IDF curves using local precipitation data /." Available to subscribers only, 2006. http://proquest.umi.com/pqdweb?did=1203570521&sid=23&Fmt=2&clientId=1509&RQT=309&VName=PQD.

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Alves, FrancismÃrio de Menezes. "Development of a computational application to obtain IDF equations in regions devoid of pluviographs using the method of isozonas." Universidade Federal do CearÃ, 2014. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=12779.

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Para tornar uma estrutura hidrÃulica segura e economicamente viÃvel Ã preciso que seu projeto seja concebido de forma a suportar eventos extremos, mas sempre seguindo a linha tÃnue entre os custos de execuÃÃo e os riscos calculados pelas consequÃncias da obra nÃo suportar os excessos de chuva. A relaÃÃo Intensidade-DuraÃÃo-FrequÃncia (IDF) da chuva Ã uma das ferramentas mais comumente utilizadas em engenharia de recursos hÃdricos para definir a vazÃo de projeto. As IDF sÃo determinadas atravÃs de dados pluviogrÃficos, porÃm, muitas vezes estes dados sÃo escassos levando a determinaÃÃo de equaÃ

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Pedrini, Marina Alves Ferraz. "Mapeamento de eventos hidrológicos da cidade de Bauru-SP." Universidade Estadual Paulista (UNESP), 2018. http://hdl.handle.net/11449/152884.

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Submitted by Marina Alves Ferraz null (marinaaferraz@yahoo.com.br) on 2018-03-04T14:57:52Z No. of bitstreams: 1 Pedrini.M.AF.dissertação_final.pdf: 6365438 bytes, checksum: d72d8b494e5dd313a3dd15d4a45ba79a (MD5) Approved for entry into archive by Maria Marlene Zaniboni null (zaniboni@bauru.unesp.br) on 2018-03-05T15:59:19Z (GMT) No. of bitstreams: 1 pedrini_maf_me_bauru.pdf: 6365438 bytes, checksum: d72d8b494e5dd313a3dd15d4a45ba79a (MD5) Made available in DSpace on 2018-03-05T15:59:19Z (GMT). No. of bitstreams: 1 pedrini_maf_me_bauru.pdf: 6365438 bytes, checksum: d72d8b494e5dd313a3dd

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Santos, Wesley de Oliveira. "Máximas intensidades e índices de erosividade de chuvas para o Rio Grande do Norte." Universidade Federal Rural do Semi-Árido, 2015. http://bdtd.ufersa.edu.br:80/tede/handle/tede/413.

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Made available in DSpace on 2016-08-16T13:26:16Z (GMT). No. of bitstreams: 1 WesleyOS_TESE.pdf: 19763130 bytes, checksum: f0feddfdd10a9b37b12b88c68c9e788a (MD5) Previous issue date: 2015-06-03 Coordenação de Aperfeiçoamento de Pessoal de Nível Superior Knowledge of extreme hydrological events is a requirement for drainage projects, waterproofing, dams, terraces and other engineering works, whether in urban or rural areas. To reduce the effects of floods, hydraulic works and those of erosion precess of contention for soil conservation, they are designed based on the maximum flow, observ

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Voss, Alexander. "Exact Riemann solution for the Euler equations with nonconvex and nonsmooth equation of state." [S.l.] : [s.n.], 2005. http://deposit.ddb.de/cgi-bin/dokserv?idn=976791641.

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Zhou, Dong. "High-order numerical methods for pressure Poisson equation reformulations of the incompressible Navier-Stokes equations." Diss., Temple University Libraries, 2014. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/295839.

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Mathematics Ph.D. Projection methods for the incompressible Navier-Stokes equations (NSE) are efficient, but introduce numerical boundary layers and have limited temporal accuracy due to their fractional step nature. The Pressure Poisson Equation (PPE) reformulations represent a class of methods that replace the incompressibility constraint by a Poisson equation for the pressure, with a suitable choice of the boundary condition so that the incompressibility is maintained. PPE reformulations of the NSE have important advantages: the pressure is no longer implicitly coupled to the velocity

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Fragnelli, Genni. "Delay equations with nonautonomous past." [S.l. : s.n.], 2002. http://deposit.ddb.de/cgi-bin/dokserv?idn=963845691.

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Stauber, Tobias. "Dissipative quantum systems and flow equations." [S.l. : s.n.], 2002. http://deposit.ddb.de/cgi-bin/dokserv?idn=96394696X.

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Ptashnyk, Mariya. "Nonlinear pseudoparabolic equations and variational inequalities." [S.l. : s.n.], 2004. http://deposit.ddb.de/cgi-bin/dokserv?idn=972054200.

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Elbirki, Asma. "On parabolic equations with gradient terms." Thesis, University of Sussex, 2016. http://sro.sussex.ac.uk/id/eprint/66012/.

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This thesis is concerned with the study of the important effect of the gradient term in parabolic problems. More precisely, we study the global existence or nonexistence of solutions, and their asymptotic behaviour in finite or infinite time. Particularly when the power of the gradient term can increase to the power function of the solution. This thesis consists of five parts. (i) Steady-State Solutions, (ii) The Blow-up Behaviour of the Positive Solutions, (iii) Parabolic Liouville-Type Theorems and the Universal Estimates, (iv) The Global Existence of the Positive Solutions, (v) Viscous Hami

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Książki na temat "IDF equations"

Succi, Sauro. Approach to Equilibrium, the H-Theorem and Irreversibility. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780199592357.003.0003.

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Like most of the greatest equations in science, the Boltzmann equation is not only beautiful but also generous. Indeed, it delivers a great deal of information without imposing a detailed knowledge of its solutions. In fact, Boltzmann himself derived most if not all of his main results without ever showing that his equation did admit rigorous solutions. This Chapter illustrates one of the most profound contributions of Boltzmann, namely the famous H-theorem, providing the first quantitative bridge between the irreversible evolution of the macroscopic world and the reversible laws of the underl

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Morawetz, Klaus. Nonequilibrium Quantum Hydrodynamics. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198797241.003.0015.

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The balance equations resulting from the nonlocal kinetic equation are derived. They show besides the Landau-like quasiparticle contributions explicit two-particle correlated parts which can be interpreted as molecular contributions. It looks like as if two particles form a short-living molecule. All observables like density, momentum and energy are found as a conserving system of balance equations where the correlated parts are in agreement with the forms obtained when calculating the reduced density matrix with the extended quasiparticle functional. Therefore the nonlocal kinetic equation fo

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Students Solutions Manual Fundamentals Of Differential Equations With Boundary Value Problems With Ide Cd. Addison Wesley Longman, 2008.

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Nagle, R. Kent. Fundamentals of Differential Equations with Boundary Value Problems with IDE CD (Saleable Package) (5th Edition). 5th ed. Addison Wesley, 2007.

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Nagle, R. Kent. Fundamentals of Differential Equations bound with IDE CD (Saleable Package) (7th Edition). 7th ed. Addison Wesley, 2007.

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Kohler, Werner E., and Lee W. Johnson. Elementary Differential Equations with Boundary Value Problems with IDE CD Package (2nd Edition). 2nd ed. Addison Wesley, 2005.

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Anjum, Rani Lill, and Stephen Mumford. Do We Need Causation in Science? Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198733669.003.0002.

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Some claim that there is no causation to be found in the mature sciences, as Russell did in a famous and often quoted paper. Physics deals with equations, for example, which are symmetric rather than directed. Causal talk gets dismissed as primitive ‘folk’ science. However, it cannot be concluded that there is no asymmetric causation simply because a science does not represent it. We often will read an equation directionally as we know we can intervene on one variable to change another. This shows that scientific notions of experiment, intervention, and even observation presuppose the reality

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Deruelle, Nathalie, and Jean-Philippe Uzan. The Einstein equations. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198786399.003.0044.

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This chapter deals with Einstein equations. In the absence of matter there is no gravitational field, and the spacetime which represents this empty universe is Minkowski spacetime. More precisely, if the gravitational field created by the matter can be neglected, the appropriate framework for describing the matter is that of special relativity. Einstein gravitational equations relate geometry and matter: specifically, they relate the Riemann tensor, or more precisely the Einstein tensor, to the geometrical object describing ‘inertia’, the energy content of the matter—that is, the energy–moment

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Rajeev, S. G. Ideal Fluid Flows. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198805021.003.0004.

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Some solutions of Euler’s equations are found here. The simplest are the steady flows: water flowing out of a tank at a constant rate, the Venturi and Pitot tubes. Another is the static solution of a self-gravitating fluid of variable density (e.g., a star). If the total mass is too large, such a star can collapse (Chandrasekhar limit). If the flow is both irrotational and incompressible, it must satisfy Laplace’s equation. Complex analysismethods can be used to solve for the flow past a cylinder or inside a disk with a stirrer. Joukowski used conformal transformations on the cylinder to find

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Isett, Philip. The Main Iteration Lemma. Princeton University Press, 2017. http://dx.doi.org/10.23943/princeton/9780691174822.003.0010.

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This chapter properly formalizes the Main Lemma, first by discussing the frequency energy levels for the Euler-Reynolds equations. Here the bounds are all consistent with the symmetries of the Euler equations, and the scaling symmetry is reflected by dimensional analysis. The chapter proceeds by making assumptions that are consistent with the Galilean invariance of the Euler equations and the Euler-Reynolds equations. If (v, p, R) solve the Euler-Reynolds equations, then a new solution to Euler-Reynolds with the same frequency energy levels can be obtained. The chapter also states the Main Lem

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Części książek na temat "IDF equations"

Garrett, Steven L. "One-Dimensional Propagation." In Understanding Acoustics. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-44787-8_10.

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Abstract Having already invested in understanding both the equation of state and the hydrodynamic equations, only straightforward algebraic manipulations will be required to derive the wave equation, justify its solutions, calculate the speed of sound in fluids, and derive the expressions for acoustic intensity and the acoustic kinetic and potential energy densities of sound waves. The “machinery” developed to describe waves on strings will be sufficient to describe one-dimensional sound propagation in fluids, even though the waves on the string were transverse and the one-dimensional waves in fluids are longitudinal. These results are combined with the thermal and viscous penetration depths to calculate the frequencies and quality factors in standing wave resonators. The coupling of those resonators to loudspeakers will be examined. The introduction of reciprocal transducers that are linear, passive, and reversible will allow absolute calibration of transducers using only electrical measurements (i.e., currents and voltages) by the reciprocity method, if the acoustic impedance that couples the source and receiver is calculable. Reflection and transmission at junctions between multiple ducts and other networks will be calculated and applied to the design of filters. The behavior of waves propagating through horns will provide useful impedance matching but introduce a low-frequency cut-off.

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von Weizsäcker, Carl Christian, and Hagen M. Krämer. "The Natural Rate of Interest and the Optimal Rate of Interest in the Steady State." In Saving and Investment in the Twenty-First Century. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-75031-2_2.

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AbstractThe “natural rate of interest” is the hypothetical, risk-free real rate of interest that would obtain in a closed economy, if net public debt were zero. It is considerably less than the optimal steady-state rate of interest, which is equal to the system’s growth rate. This holds for a very general “meta-model.” The fundamental equation of capital theory holds on the optimal steady-state path: T = Z − D, where T is the overall economic period of production, Z is the representative private “waiting period” of consumers and D is the public debt ratio. Prosperity is at least 30% lower at the natural rate of interest than at the optimal rate.

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Adam, John A. "Introduction to the Mathematics of Rays." In Rays, Waves, and Scattering. Princeton University Press, 2017. http://dx.doi.org/10.23943/princeton/9780691148373.003.0003.

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This chapter provides an overview of the mathematics of rays. It begins with a discussion of the theory of geometrical optics and how it can be formulated by means of the ray equations or the Hamilton-Jacobi equation. The two equations are of seemingly different types, but they are in fact equivalent. The ray equations are the characteristic equations of the Hamilton-Jacobi equation. This remark leads to the geometrical interpretation: the family of rays of geometrical optics is perpendicular to the wavefronts S = constant, if S denotes the appropriate solution of the Hamilton-Jacobi equation. The chapter considers the Hamilton-Jacobi theory in more detail, along with Hamilton's principle, ray differential geometry and the eikonal equation, and dispersion relations. It also presents the general solution of the linear wave equation before concluding with an analysis of the behavior of rays and waves in a slowly varying environment.

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Huang, Stephen. "Haemodynamics for echocardiography." In Oxford Textbook of Advanced Critical Care Echocardiography, edited by Anthony McLean, Stephen Huang, and Andrew Hilton. Oxford University Press, 2020. http://dx.doi.org/10.1093/med/9780198749288.003.0003.

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Haemodynamics is the study of the physics of blood flows through the cardiovascular system, and is mainly concerned with the physical factors that controls the blood flow. Experienced clinicians and echocardiographers can deduce the haemodynamic status of a patient from examining the shapes, velocities, timings, and durations of the Doppler spectrum without performing any sophisticated measurements. If accurate measurements are needed, the operators need recourse to advanced concepts in fluid dynamics. For example, the simplified Bernoulli equation and continuity equation are often used for pressure gradient and orifice size estimations. Although these equations are used in everyday echocardiography, misunderstanding and misuses of the equations are common because the assumptions and limitations of these equations are fully appreciated. Further, haemodynamics is not a single concept. Rather, it is a collection of different concepts and that makes learning and teaching haemodynamics as one of least appealing but most challenging area in echocardiography. This chapter revisits the basic concepts of haemodynamics and their applications in echocardiography.

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Wilson, Robin. "5. More triangles and squares." In Number Theory: A Very Short Introduction. Oxford University Press, 2020. http://dx.doi.org/10.1093/actrade/9780198798095.003.0005.

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‘More triangles and squares’ explores Diophantine equations, named after the mathematician Diophantus of Alexandria. These are equations requiring whole number solutions. Which numbers can be written as the sum of two perfect squares? Joseph-Louis Lagrange’s theorem guarantees that every number can be written as the sum of four squares, and Edward Waring correctly suggested that there are similar results for higher powers. In 1637, Fermat conjectured that no three positive integers, a, b, and c, can satisfy the equation an+bn=cn, if n is greater than 2. Known as ‘Fermat’s last theorem’, this conjecture was eventually proved by Andrew Wiles in 1995.

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Schweitzer, George K., and Lester L. Pesterfield. "The Construction of E–pH Diagrams." In The Aqueous Chemistry of the Elements. Oxford University Press, 2010. http://dx.doi.org/10.1093/oso/9780195393354.003.0004.

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In order to construct an E–pH diagram one needs to follow eight basic steps: (1) Select the species of the element involved which contain one or more of the following entities: the element, oxygen, and hydrogen. This is best done by reading the descriptive chemistry of the element in a good inorganic text and identifying the species, both soluble and insoluble, which persist, at least for several minutes, in aqueous solution. (2) Starting at the lower left-hand corner of an E–pH framework, arrange the selected species in vertical order of increasing oxidation number of the element. Then, if there are different species with the same oxidation number, arrange them in horizontal order of decreasing protonation (increasing hydroxylation). If there is only one species of a given oxidation number, this species extends across the entire pH range for the purposes of diagram construction. (3) Draw in border lines between the species, that is, the lines representing the transformation of a species to another species. You will not know exactly where these lines occur but the approximate regions are sufficient for the purposes of diagram construction. (4) Write equations for the transformations that have been indicated. Some of them will involve electrons and therefore will be half-reactions. Such equations must always be written as reductions, that is, with the electrons on the left. In addition, no reaction should contain the OH− ion; only the H+ and/or HOH instead. (5) From appropriate tabulations, obtain the standard free energy values (ΔG° in kJ/mole) of every species in the equations. These ΔG° values are to be employed in the following relationship which applies to each of the above equations. . . . ΔG° (reaction) = ∑ΔG° (products) − ∑ΔG° (reactants) (6) . . . (6) The ΔG° (reaction) values for each equation are to be converted into E° values for those equations containing electrons and into K values for those equations which do not. This is done by use of the following expressions: . . . E° = ΔG° /−96.49n log K = ΔG° /−5.7 (7/8) . . . where n represents the number of electrons in an equation.

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Martinho Simões, José A., and Manuel Minas da Piedade. "Kinetics in Solution." In Molecular Energetics. Oxford University Press, 2008. http://dx.doi.org/10.1093/oso/9780195133196.003.0019.

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The main equations used to extract thermochemical data from rate constants of reactions in solution were presented in section 3.2. Here, we illustrate the application of those equations with several examples quoted from the literature. First, however, recall that the rate constant for any elementary reaction in solution, defined in terms of concentrations, is related to the activation parameters through equations 15.1 or 15.2. Equation 15.1 yields the enthalpy and the entropy of activation respectively from the slope and the intercept of a ln(k/T) versus 1/T plot (an Eyring plot). Equation 15.2 leads to the Arrhenius activation energy and the frequency factor, respectively, from the slope and the intercept of a ln k versus 1/T plot (an Arrhenius plot). All the parameters refer to the mean temperature of the plot, and Δ‡Ho is related to Ea by equation 15.3. Finally, recall that if the activation parameters are available for the forward (subscript 1) and the reverse (subscript −1) reaction, the enthalpy of this reaction is calculated by equation 15.4. In the preceding chapter on equilibrium in solution, it was pointed out that any analytical method suitable for determining equilibrium compositions of a reaction mixture at several temperatures can be used to obtain the enthalpy and entropy of that reaction. A similar statement can be made here: Any analytical method suitable for monitoring concentration changes with time at several temperatures can be used to derive the activation parameters of a reaction. Therefore, the analytical techniques used in equilibrium experiments are also applied in nonequilibrium (kinetics) studies. However, in this case, the choice of the analytical method will have an additional and important restriction, for it must consider the reaction rate. An instrumental technique suitable for determining the concentration of a given species under equilibrium conditions may be inappropriate for determining a fast concentration change of the same species.

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Nitzan, Abraham. "Introduction To Quantum Relaxation Processes." In Chemical Dynamics in Condensed Phases. Oxford University Press, 2006. http://dx.doi.org/10.1093/oso/9780198529798.003.0015.

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The first question to ask about the phenomenon of relaxation is why it occurs at all. Both the Newton and the Schrödinger equations are symmetrical under time reversal: The Newton equation, dx/dt = v ; dv/dt = −∂V/∂x, implies that particles obeying this law of motion will retrace their trajectory back in time after changing the sign of both the time t and the particle velocities v. The Schrödinger equation, ∂ψ/∂t = −(i/.h) Ĥ ψ, implies that if (ψ (t) is a solution then ψ *(−t) is also one, so that observables which depend on |ψ|2 are symmetric in time. On the other hand, nature clearly evolves asymmetrically as asserted by the second law of thermodynamics. How does this asymmetry arise in a system that obeys temporal symmetry in its time evolution? Readers with background in thermodynamics and statistical mechanics have encountered the intuitive answer: Irreversibility in a system with many degrees of freedom is essentially a manifestation of the system “getting lost in phase space”:Asystem starts from a given state and evolves in time. If the number of accessible states is huge, the probability that the system will find its way back to the initial state in finite time is vanishingly small, so that an observer who monitors properties associated with the initial state will see an irreversible evolution. The question is how is this irreversible behavior manifested through the reversible equations of motion, and how does it show in the quantitative description of the time evolution. This chapter provides an introduction to this subject using the time-dependent Schrödinger equation as a starting point. Chapter 10 discusses more advanced aspects of this problem within the framework of the quantum Liouville equation and the density operator formalism.

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"Thirty Equations for General Chemistry." In Computer Based Projects for a Chemistry Curriculum, edited by Thomas J. Manning and Aurora P. Gramatges. BENTHAM SCIENCE PUBLISHERS, 2013. http://dx.doi.org/10.2174/9781608051939113010018.

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In this exercise students will review the concepts and equations associated with thirty important relationships covered in general chemistry. Students will use a spreadsheet to graph correlations associated with each equation. This exercise may be given at any point in a general chemistry lab curriculum. If given at the beginning of a course than it can serve as an introduction to the course. If the exercise is assigned at the end of a course it serves as an excellent review for many of the concepts covered throughout a semester.

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Sogge, Christopher D., and Steve Zelditch. "On Eigenfunction Restriction Estimates and L4-Bounds for Compact Surfaces with Nonpositive Curvature." In Advances in Analysis, edited by Charles Fefferman, Alexandru D. Ionescu, D. H. Phong, and Stephen Wainger. Princeton University Press, 2014. http://dx.doi.org/10.23943/princeton/9780691159416.003.0018.

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This chapter discusses a “restriction theorem,” which is related to certain Littlewood–Paley estimates for eigenfunctions. The main step in proving this theorem is to see that an estimate involving a wave equation associated with an assigned Laplace–Beltrami operator and a bit of microlocal (wavefront) analysis remains valid as well if a certain variable is part of a periodic orbit under a set of curvature assumptions. This can be done by lifting the wave equation for a compact two-dimensional Riemannian manifold without boundary up to the corresponding one for its universal cover. By identifying solutions of wave equations for this Riemannian manifold with “periodic” ones, this chapter is able to obtain the necessary bounds using a bit of wavefront analysis and the Hadamard parametrix for the universal cover.

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Streszczenia konferencji na temat "IDF equations"

Yoo, Kisoo, Jin Liu, and Prashanta Dutta. "Segregated Parallel Computing for Isoelectric Focusing of Proteins." In ASME 2013 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/imece2013-64830.

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A parallel algorithm is introduced to simulate isoelectric focusing (IEF) in a microfluidic device. This new algorithm is based on segregated method for solving a large number of mass conservation equations in the system. An in house numerical code is developed to simulate the transient focusing behavior of cardiac troponin I (cTnI) protein in a pH field formed by ampholytes in presence of an applied electric field. The effectiveness of the parallel scheme is assessed by analyzing the CPU times for each process. Numerical results show that the electric potential distribution is nearly independ

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Biryukov, Martin, Polevoi, and Weihnacht. "Derivation of COM equations for the SAW IDT." In Proceedings of IEEE Ultrasonics Symposium ULTSYM-94. IEEE, 1994. http://dx.doi.org/10.1109/ultsym.1994.401583.

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Mohamed, A. Abd El-Sabor, Amrit Bikram Sahu, Snehasish Panigrahy, Gilles Bourque, and Henry Curran. "Ignition Delay Time Correlation of C1 – C5 Natural Gas Blends for Intermediate and High Temperature Regime." In ASME Turbo Expo 2021: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/gt2021-59053.

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Abstract New ignition delay time (IDT) data for stoichiometric natural gas (NG) blends composed of C1 – C5 n-alkanes with methane as the major component were recorded using a high pressure shock tube (ST) at reflected shock pressures (p5) and temperatures (T5) in the range 20–30 bar and 1000–1500 K, respectively. The good agreement of the new IDT experimental data with literature data shows the reliability of the new data at the conditions investigated. Comparisons of simulations using the NUI Galway mechanism (NUIGMech1.0) show very good agreement with the new experimental results and with th

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Khudayarov, B. A. "Flutter Analysis of Viscoelastic Sandwich Plate in Supersonic Flow." In ASME 2005 International Mechanical Engineering Congress and Exposition. ASMEDC, 2005. http://dx.doi.org/10.1115/imece2005-80156.

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In this work is investigated the flutter of viscoelastic sandwich plate streamlined by gas current. The basic direction of work is consisted in taking into account of viscous-elastic material’s properties at supersonic speeds. The vibration equations relatively of deflection are described by Integro-Differential Equations (IDE) in partial derivatives. By Bubnov-Galerkin methods reduced the problems to investigation of system of ordinary IDE. The IDE are solved by numerical method, which based on using of quadrature formula. Critical speeds for sandwich plate flutter are defined.

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Kong, Xianwen, and Ross Doak. "Conceptual Design and Analysis of Spherical Mobile Robots With an Omni-Wheel Based Internal Driving Unit." In ASME 2011 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/detc2011-48857.

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Spherical mobile robots belong to a class of mobile robots which may have applications ranging from exploration to entertainment. This paper presents our preliminary kinematic study of spherical mobile robots which are driven by an omni-wheel based internal driving unit (IDU). At first, we discuss the conceptual design of spherical mobile robots with an omni-wheel based IDU. Several IDUs are proposed. Then we derive the velocity equation of a spherical mobile robot with an omni-wheel based IDU. Finally, two isotropic configurations of spherical mobile robots with an omni-wheel based IDU are id

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Filatova, Darya. "The Euler schemes for numerical modeling of stochastic differential equations." In 2017 International Conference on Information and Digital Technologies (IDT). IEEE, 2017. http://dx.doi.org/10.1109/dt.2017.8024283.

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Abe, Kuniyoshi, and Gerard L. G. Sleijpen. "A BiCGStab2 variant of the IDR(s) method for solving linear equations." In NUMERICAL ANALYSIS AND APPLIED MATHEMATICS ICNAAM 2012: International Conference of Numerical Analysis and Applied Mathematics. AIP, 2012. http://dx.doi.org/10.1063/1.4756242.

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Dower, P. M. "A dynamic programming equation for measurement feedback almost-dissipative control." In Information, Decision and Control. IEEE, 2002. http://dx.doi.org/10.1109/idc.2002.995428.

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Zhu, Xian-Kui. "Improved Elastic Compliance Equation and its Inverse Solution for Compact Tension Specimens." In ASME 2017 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/pvp2017-65406.

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ASTM E1820 is a well-developed fracture test standard and has been used worldwide for fracture toughness testing on ductile materials in terms of the J-integral or J-R curve. This standard recommends the elastic unloading compliance technique for measuring crack length in a single specimen test, and an accurate elastic compliance equation is needed to estimate physical crack length. Compact tension (CT) specimen is one of the most often used standard specimens with crack length ratios of 0.45≤a/W≤0.70 prescribed in E1820 for J-R curve testing. The stress intensity factor K of CT specimens used

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Swift, Damian. "Equation of State Measurements for Beryllium in the ICF Capsule Regime." In SHOCK COMPRESSION OF CONDENSED MATTER - 2003: Proceedings of the Conference of the American Physical Society Topical Group on Shock Compression of Condensed Matter. AIP, 2004. http://dx.doi.org/10.1063/1.1780198.

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Raporty organizacyjne na temat "IDF equations"

Richmond, Paul, Adam Potter, David Looney, and William Santee. Terrain coefficients for predicting energy costs of walking over snow. Engineer Research and Development Center (U.S.), 2021. http://dx.doi.org/10.21079/11681/41602.

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Predicting the energy costs of human travel over snow can be of significant value to the military and other agencies planning work efforts when snow is present. The ability to quantify, and predict, those costs can help planners determine if snow will be a factor in the execution of dismounted tasks and operations. To adjust predictive models for the effect of terrain, and more specifically for surface conditions, on energy costs, terrain coefficients (ƞ) have been developed. By applying knowledge gained from prior studies of the effects of terrain and snow, and by leveraging those existing di

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Roberts, Tony, and Kevin Hernandez. Open Data for Agriculture and Nutrition: A Literature Review and Proposed Conceptual Framework. Institute of Development Studies (IDS), 2021. http://dx.doi.org/10.19088/ids.2021.018.

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This paper begins by locating the Global Open Data for Agriculture and Nutrition project (GODAN) in the context of wider debates in the open data movement by first reviewing the literature on open data and open data for agriculture and nutrition (ODAN). The review identifies a number of important gaps and limitations in the existing literature. There has been no independent evaluation of who most benefits or who is being left behind regarding ODAN. There has been no independent evaluation of gender or diversity in ODAN or of the development outcomes or impacts of ODAN. The existing research on

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