Results 31 to 40 of about 11,233,592 (222)

A Computer Model for the Hydraulic Analysis of Open Channel Cross Sections

open access: yesJournal of Agricultural and Marine Sciences, 1996
Irrigation and hydraulic engineers are often faced with the difficulty of tedious trial solutions of the Manning equation to determine the various geometric elements of open channels.
W. H. Shayya, R. H. Mohtar, M. S Baasiri
doaj   +1 more source

On the equivalence of dynamic relaxation and the Newton‐Raphson method [PDF]

open access: yesInternational Journal for Numerical Methods in Engineering, 2017
SummaryDynamic relaxation is an iterative method to solve nonlinear systems of equations, which is frequently used for form finding and analysis of structures that undergo large displacements. It is based on the solution of a fictitious dynamic problem where the vibrations of the structure are traced by means of a time integration scheme until a static
Jef Rombouts   +3 more
openaire   +2 more sources

Unified Phase‐Field Framework for Antiferroelectric, Ferroelectric and Dielectric Phases: Application to HZO Thin Films

open access: yesAdvanced Functional Materials, EarlyView.
HfxZr1−xO2${\rm Hf}_x{\rm Zr}_{1-x}{\rm O}_2$ offers CMOS‐compatible nanoscale ferroelectricity yet suffers from a high Ec${\rm E}_c$ demanding large operating voltages. A unified phase‐field framework spanning AFE/FE/DE phases shows how FE grains soften neighboring AFE grains over λ$\lambda$ ≈$\approx$ 22–37 nm.
P. Pankaj   +4 more
wiley   +1 more source

Risk management externalities in agrifood supply chains

open access: yesAmerican Journal of Agricultural Economics, EarlyView.
Abstract Firms may under‐ or over‐invest in risk management from the social planner's perspective, resulting in a negative externality on other economic agents in the supply chain. The externality of risk management is particularly relevant for agrifood supply chains, which frequently experience disruptions and play a primary role in preventing major ...
Jeffrey Hadachek, Meilin Ma
wiley   +1 more source

A Consensus Approach to Distributed Convex Optimization in Multi-Agent Systems [PDF]

open access: yes, 2013
In this thesis we address the problem of distributed unconstrained convex optimization under separability assumptions, i.e., the framework where a network of agents, each endowed with local private convex cost and subject to communication constraints ...
Filippo Zanella, Zanella, Filippo
core  

Evaluation of Flow Rate Correction in Water Pipeline Distribution Network by Two Numerical Methods of Solution

open access: yesJournal of Applied Sciences and Environmental Management, 2019
This study evaluates flow rate correction and approximate flow rates in  loops for three different case studies of closed looped pipe distribution network systems using Hardy Cross and Newton Raphson.
OH Lasisi, JR Adewumi, KH Lasisi
doaj   +1 more source

Sustainability and Value Transitions: The Strategic Role of Cross‐Sectoral Interconnectedness and Transition Brokers

open access: yesBusiness Strategy and the Environment, EarlyView.
ABSTRACT Climate economics is undergoing rapid transformation, reconfiguring the foundations of sustainability transitions. This study develops a systems‐based perspective that foregrounds the strategic role of cross‐sectoral interconnectedness and transition brokers in shaping these transitions.
Ionna Trofimova‐Elliot
wiley   +1 more source

A partial envelope approach for modelling multivariate spatial‐temporal data

open access: yesCanadian Journal of Statistics, EarlyView.
Abstract In the new era of big data, modelling multivariate spatial‐temporal data is a challenging task due to both the high dimensionality of the features and complex associations among the responses across different locations and time points.
Reisa Widjaja   +3 more
wiley   +1 more source

Numerical and simulation analysis comparison of hydraulic network problem base on higher-order efficiency approach

open access: yesAlexandria Engineering Journal, 2021
The hydraulic network study is a real-life engineering problem extensively base on applied and computational approaches. Several numerical schemes are tested for defining of hydraulic pipe networks solution, such as, Hardy Cross Method, Newton Method and
Waseem Asghar Khan
doaj   +1 more source

Characteristics Analysis and Stage Division of Class Ⅰ Gas Hydrate Deposit Developed by Vertical Well and Depressurization Based on Numerical Analysis

open access: yesEnergy Science &Engineering, EarlyView.
The production process can be divided into two stages according to the relationship between the gas production rate and the decomposition gas rate. The ratio of cumulative decomposition gas to cumulative gas production can be used to evaluate the contribution of the gas hydrate layer.
Nu Lu   +4 more
wiley   +1 more source

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