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Artykuły w czasopismach na temat „Problème de minimisation”

Autor: Grafiati

Data publikacji: 12 października 2024

Data aktualizacji: 31 lipca 2025

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1

Dolbeault, Jean. "Existence De Solutions Symetriques Pour Un Modele De Champs De Mesons:Le Modele D' Adkins Et Nappi." Communications in Partial Differential Equations 15, no. 12 (1990): 1743–86. https://doi.org/10.1080/03605309908820746.

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Dans cet article, nous étudions le modèle proposé par Adkins et Nappi pour décrire des configurations statiques de champs de mésons. Sous une hypothèse de symétrie, nous donnons une formulation précise d'un problème de minimisation avec contrainte de type degré topologique, et nous montrons l'existence de fonctions minimisantes. Nous présentons aussi le problème de minimisation sans hypothèse de symétrie.

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2

Malassis, Louis. "Politiques et stratégies alimentaires." Économies et Sociétés. Série Progrès en agriculture 19, no. 718 (1985): 3–22. http://dx.doi.org/10.3406/esag.1985.1638.

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Cet article est une tentative pour établir une «problématique des stratégies alimentaires». Après quelques définitions préliminaires il envisage les objectifs, les méthodes (spécialisation internationale ou autosuffisance), les moyens (modèles techniques) des politiques et le problème de la minimisation du coût social de l’alimentation.

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3

Bouglet, Tania, Thomas Lanzi, and J. C. Vergnaud. "Incertitude scientifique et décision publique : le recours au Principe de précaution." Recherches économiques de Louvain 72, no. 2 (2006): 109–27. http://dx.doi.org/10.1017/s0770451800044602.

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Résumé:Dans cet article, nous formalisons deux critères de décisions qui tentent de rendre compte de deux logiques différentes d'interprétation du Principe de précaution. Le premier critère correspond à la maximisation du minimum de l'espérance d'utilité alors que le second critère correspond à la minimisation du maximum de l'espérance de regret. Les deux critères de décisions sont appliqués à un problème économique où l'incertitude est mesurée par une famille de probabilités. Nous montrons qu'il existe un intervalle de probabilités sur lequel les choix relatifs aux deux critères divergent. Pl

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4

Chouaf, Seloua, and Youcef Smara. "Méthode de sélection des bandes à base de l'Analyse en Composantes Indépendantes appliquée aux images hyperspectrales de télédétection." Revue Française de Photogrammétrie et de Télédétection, no. 204 (April 8, 2014): 57–62. http://dx.doi.org/10.52638/rfpt.2013.22.

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Les données hyperspectrales se caractérisent par une importante dimension spectrale qui atteint quelques centaines de bandes étroites et contigües. Le volume occupé par ces images est non négligeable et fait que des taches usuelles telles que : le stockage, le traitement et l'analyse soient alourdies. Pour pallier ce problème et garantir une meilleure exploitation de ces données, nous proposons par le présent article, une méthode de réduction qui vise à créer un espace de représentation de dimension moindre, informatif et libéré des redondances tout en préservant la signification physique des

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5

Albers, C. J., F. Critchley, and J. C. Gower. "Quadratic minimisation problems in statistics." Journal of Multivariate Analysis 102, no. 3 (2011): 698–713. http://dx.doi.org/10.1016/j.jmva.2009.12.018.

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DeBenedictis, Andrew, and Timothy J. Atherton. "Shape minimisation problems in liquid crystals." Liquid Crystals 43, no. 13-15 (2016): 2352–62. http://dx.doi.org/10.1080/02678292.2016.1209699.

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7

McDiarmid, Colin. "Pattern minimisation in cutting stock problems." Discrete Applied Mathematics 98, no. 1-2 (1999): 121–30. http://dx.doi.org/10.1016/s0166-218x(99)00112-2.

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8

Hill, Robin D. "Dual periodicity in -norm minimisation problems." Systems & Control Letters 57, no. 6 (2008): 489–96. http://dx.doi.org/10.1016/j.sysconle.2007.11.007.

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9

Aussel, D., and C. C. Chou. "Asymptotical well behaviour for constrained minimisation problems." Bulletin of the Australian Mathematical Society 66, no. 3 (2002): 499–516. http://dx.doi.org/10.1017/s000497270004034x.

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This paper is devoted to the study of the links between stationary sequence and minimising sequence for constrained minimisation problems. The constraint set is not supposed to be convex and no differentiability assumption is made on the objective function. New tools are developed in this general framework and we prove a necessary and a sufficient condition for such problems to have a “constrained asymptotical well behaviour” (that is, each stationary sequence is a minimising sequence). Our work extend that of Auslender, Cominetti and Crouzeix.

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10

Albers, C. J., F. Critchley, and J. C. Gower. "Applications of quadratic minimisation problems in statistics." Journal of Multivariate Analysis 102, no. 3 (2011): 714–22. http://dx.doi.org/10.1016/j.jmva.2010.11.009.

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11

Dai, Jisheng, Weichao Xu, Jin Zhang, and Chunqi Chang. "Homotopy algorithm for l 1 ‐norm minimisation problems." IET Signal Processing 9, no. 1 (2015): 1–9. http://dx.doi.org/10.1049/iet-spr.2013.0338.

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12

Huy, N. Q., V. Jeyakumar, and G. M. Lee. "Sufficient global optimality conditions for multi-extremal smooth minimisation problems with bounds and linear matrix inequality constraints." ANZIAM Journal 47, no. 4 (2006): 439–50. http://dx.doi.org/10.1017/s1446181100010063.

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AbstractIn this paper, we present sufficient conditions for global optimality of a general nonconvex smooth minimisation model problem involving linear matrix inequality constraints with bounds on the variables. The linear matrix inequality constraints are also known as “semidefinite” constraints which arise in many applications, especially in control system analysis and design. Due to the presence of nonconvex objective functions such minimisation problems generally have many local minimisers which are not global minimisers. We develop conditions for identifying global minimisers of the model

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13

Rooney, Siobhan, Aideen Freyne, Gabrielle Kelly, and John O'Connor. "Differences in the quality of life of two groups of drug users." Irish Journal of Psychological Medicine 19, no. 2 (2002): 55–59. http://dx.doi.org/10.1017/s0790966700006960.

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AbstractObjectives: The aim of this study was to compare aspects of the quality of life of drug users on a methadone maintenance programme to drug users on a harm minimisation programme.Method: Thirty-six clients attending the harm minimisation programme in the National Drug Treatment Centre, Dublin, were matched for age and sex to 36 clients on the methadone maintenance programme. All were interviewed with the SF-36 Health Survey Questionnaire to measure health related quality of life and with the Hospital Anxiety and Depression Scale (HADs) to measure psychological morbidity.Results: More cl

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14

Kimura, M., and P. van Meurs. "Regularity of the minimiser of one-dimensional interaction energies." ESAIM: Control, Optimisation and Calculus of Variations 26 (2020): 27. http://dx.doi.org/10.1051/cocv/2019043.

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We consider both the minimisation of a class of nonlocal interaction energies over non-negative measures with unit mass and a class of singular integral equations of the first kind of Fredholm type. Our setting covers applications to dislocation pile-ups, contact problems, fracture mechanics and random matrix theory. Our main result shows that both the minimisation problems and the related singular integral equations have the same unique solution, which provides new regularity results on the minimiser of the energy and new positivity results on the solutions to singular integral equations.

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15

Katzourakis, Nikos. "A minimisation problem in L∞ with PDE and unilateral constraints." ESAIM: Control, Optimisation and Calculus of Variations 26 (2020): 60. http://dx.doi.org/10.1051/cocv/2019034.

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We study the minimisation of a cost functional which measures the misfit on the boundary of a domain between a component of the solution to a certain parametric elliptic PDE system and a prediction of the values of this solution. We pose this problem as a PDE-constrained minimisation problem for a supremal cost functional in L∞, where except for the PDE constraint there is also a unilateral constraint on the parameter. We utilise approximation by PDE-constrained minimisation problems in Lp as p →∞ and the generalised Kuhn-Tucker theory to derive the relevant variational inequalities in Lp and

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16

Peldschus, Friedel. "RESEARCH ON THE SENSITIVITY OF MULTI- CRITERION EVALUATION METHODS/SENSIBILITÄTSUNTERSUCHUNGEN ZU METHODEN DER MEHRKRITERIELLEN ENTSCHEIDUNGEN." JOURNAL OF CIVIL ENGINEERING AND MANAGEMENT 7, no. 4 (2001): 276–80. http://dx.doi.org/10.3846/13921525.2001.10531736.

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Investigations into the multi-criterion evaluations have been performed for different purposes for more than 30 years. Nevertheless, up to now there are no common rules how to apply multi-criterion methods of evaluation and how to interpret their results. But the solutions of the problem must be found. The investigations are based on the joint programme LEVI developed by the VGTU and the Leipzig HSTEC. In accordance with the programme, for solving the problem a matrix is created in which all solution variants are evaluated by the same criteria. For the transformation of initial data different

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17

Pulch, R. "Initial-boundary value problems of warped MPDAEs including minimisation criteria." Mathematics and Computers in Simulation 79, no. 2 (2008): 117–32. http://dx.doi.org/10.1016/j.matcom.2007.10.006.

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18

Krishnamoorthy, M., A. T. Ernst, and D. Baatar. "Algorithms for large scale Shift Minimisation Personnel Task Scheduling Problems." European Journal of Operational Research 219, no. 1 (2012): 34–48. http://dx.doi.org/10.1016/j.ejor.2011.11.034.

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19

Andjouh, Amar, and Mohand Ouamer Bibi. "Support solving method for box-constrained indefinite quadratic minimisation problems." International Journal of Mathematical Modelling and Numerical Optimisation 12, no. 4 (2022): 390. http://dx.doi.org/10.1504/ijmmno.2022.126556.

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20

Dutta, J., V. Vetrivel, and S. Nanda. "Semi-invex functions and their subdifferentials." Bulletin of the Australian Mathematical Society 56, no. 3 (1997): 385–93. http://dx.doi.org/10.1017/s0004972700031166.

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We introduce the notion of semi-invex function (non-smooth) and the associated subdifferential. We study their properties and establish the conditions for optimality in constrained and unconstrained minimisation problems.

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21

Haji Ali, Nor Eeda, Ho Chin Siong, Halmi Zainol, and Nurain Mohd Talmizi. "Socio-Demographic Influencing Behaviour against Solid Waste Minimisation in Shah Alam City, Malaysia." Environment-Behaviour Proceedings Journal 2, no. 6 (2017): 53. http://dx.doi.org/10.21834/e-bpj.v2i6.989.

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Waste management is one of the most challenging problems. This study investigates the influence of household attributes on waste minimisation behaviour in Shah Alam City, Malaysia. Through a household survey, 300 respondents were randomly chosen. Findings from the study revealed that respondents behaviour has statistically significant associations with 4 socio-demographic, namely gender [F(298) = 7.33, p = 0.00]; race [F(2, 297) = 3.22, p = 0.04]; marital status [F(2, 297) = 3.51, p = 0.03]; home ownership [F(2, 295) = 7.57, p = 0.00]. The results of this analysis will facilitate the implement

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22

Khrychev, Dmitry. "Optimal programmed control in energy minimisation problem." E3S Web of Conferences 458 (2023): 01028. http://dx.doi.org/10.1051/e3sconf/202345801028.

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This paper is devoted to the construction of optimal programmed control of the motion of a material point in a medium with a random coefficient of resistance in a homogeneous field of gravity of the Earth. The control objective is to minimise the mathematical expectation of the total mechanical energy of the material point. The problem is solved by two methods proposed by the author in previous works. Both methods assume approximation of the initial stochastic problem by deterministic optimal control problems. In the first case, the transition to approximate deterministic problems is carried o

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23

Vaidya, Omkarprasad S., L. Ganapathy, and Sushil Kumar. "A cost minimisation model for system reliability allocation." International Journal of Quality & Reliability Management 36, no. 9 (2019): 1620–43. http://dx.doi.org/10.1108/ijqrm-07-2018-0199.

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Purpose The purpose of this paper is to consider a nonlinear problem of minimizing the cost of providing reliable systems. The authors assume that the system consists of several components in series, and for each such component, the cost of the component increases exponentially with its reliability. Design/methodology/approach In order to solve this nonlinear optimization problem, the authors propose two approaches. The first approach is based on the concept of adjusting the reliability of a pair of components to minimize the cost of the system. The authors call this procedure as reliability a

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24

Lord, Nick. "An unexpected appearance of e in a family of minimisation problems." Mathematical Gazette 104, no. 561 (2020): 553–55. http://dx.doi.org/10.1017/mag.2020.121.

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25

Motreanu, Dumitru. "A multiple linking minimax principle." Bulletin of the Australian Mathematical Society 53, no. 1 (1996): 39–49. http://dx.doi.org/10.1017/s0004972700016701.

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The aim of this paper is three-fold: to fill the gap between different deformation lemmas, to obtain a unifying minimax result where multiple linking situations can occur, and to locate the critical points as solutions of minimisation problems.

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26

Chittaro, Francesca C., and Laura Poggiolini. "Singular extremals in L1-optimal control problems: sufficient optimality conditions." ESAIM: Control, Optimisation and Calculus of Variations 26 (2020): 99. http://dx.doi.org/10.1051/cocv/2020023.

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In this paper we are concerned with generalised L1-minimisation problems, i.e. Bolza problems involving the absolute value of the control with a control-affine dynamics. We establish sufficient conditions for the strong local optimality of extremals given by the concatenation of bang, singular and inactive (zero) arcs. The sufficiency of such conditions is proved by means of Hamiltonian methods. As a by-product of the result, we provide an explicit invariant formula for the second variation along the singular arc.

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27

Vilventhan, Aneetha, VG Ram, and S. Sugumaran. "Value stream mapping for identification and assessment of material waste in construction: A case study." Waste Management & Research 37, no. 8 (2019): 815–25. http://dx.doi.org/10.1177/0734242x19855429.

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Construction sites are plagued with numerous problems, such as improper planning and management, high amounts of waste generation and low awareness of waste reduction. Construction and demolition waste literature provides several best practises and prescriptive strategies that help minimise waste during construction. However, it lacks in the systematic identification and minimisation approach of all possibilities of waste. Therefore, studies focusing on principles and tools that help systematically analyse the inefficiencies of on-site processes leading to waste generation and philosophies add

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28

Adamson, Duncan, Argyrios Deligkas, Vladimir Gusev, and Igor Potapov. "On the Hardness of Energy Minimisation for Crystal Structure Prediction*." Fundamenta Informaticae 184, no. 3 (2022): 181–203. http://dx.doi.org/10.3233/fi-2021-2096.

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Crystal Structure Prediction (CSP) is one of the central and most challenging problems in materials science and computational chemistry. In CSP, the goal is to find a configuration of ions in 3D space that yields the lowest potential energy. Finding an efficient procedure to solve this complex optimisation question is a well known open problem. Due to the exponentially large search space, the problem has been referred in several materials-science papers as “NP-Hard and very challenging” without a formal proof. This paper fills a gap in the literature providing the first set of formally proven

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29

Bisira, Hammed, and Abdellah Salhi. "Reshuffle minimisation to improve storage yard operations efficiency." Journal of Algorithms & Computational Technology 15 (January 2021): 174830262199401. http://dx.doi.org/10.1177/1748302621994010.

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There are many ways to measure the efficiency of the storage area management in container terminals. These include minimising the need for container reshuffle especially at the yard level. In this paper, we consider the container reshuffle problem for stacking and retrieving containers. The problem was represented as a binary integer programming model and solved exactly. However, the exact method was not able to return results for large instances. We therefore considered a heuristic approach. A number of heuristics were implemented and compared on static and dynamic reshuffle problems includin

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30

Oeri, Hans, and David Goluskin. "Convex computation of maximal Lyapunov exponents." Nonlinearity 36, no. 10 (2023): 5378–400. http://dx.doi.org/10.1088/1361-6544/acecf5.

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Abstract We describe an approach for finding upper bounds on an ODE dynamical system’s maximal Lyapunov exponent (LE) among all trajectories in a specified set. A minimisation problem is formulated whose infimum is equal to the maximal LE, provided that trajectories of interest remain in a compact set. The minimisation is over auxiliary functions that are defined on the state space and subject to a pointwise inequality. In the polynomial case—i.e. when the ODE’s right-hand side is polynomial, the set of interest can be specified by polynomial inequalities or equalities, and auxiliary functions

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31

Wu, Xiao, and Xianping Guo. "First Passage Optimality and Variance Minimisation of Markov Decision Processes with Varying Discount Factors." Journal of Applied Probability 52, no. 2 (2015): 441–56. http://dx.doi.org/10.1239/jap/1437658608.

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This paper deals with the first passage optimality and variance minimisation problems of discrete-time Markov decision processes (MDPs) with varying discount factors and unbounded rewards/costs. First, under suitable conditions slightly weaker than those in the previous literature on the standard (infinite horizon) discounted MDPs, we establish the existence and characterisation of the first passage expected-optimal stationary policies. Second, to further distinguish the expected-optimal stationary policies, we introduce the variance minimisation problem, prove that it is equivalent to a new f

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Wu, Xiao, and Xianping Guo. "First Passage Optimality and Variance Minimisation of Markov Decision Processes with Varying Discount Factors." Journal of Applied Probability 52, no. 02 (2015): 441–56. http://dx.doi.org/10.1017/s0021900200012560.

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This paper deals with the first passage optimality and variance minimisation problems of discrete-time Markov decision processes (MDPs) with varying discount factors and unbounded rewards/costs. First, under suitable conditions slightly weaker than those in the previous literature on the standard (infinite horizon) discounted MDPs, we establish the existence and characterisation of the first passage expected-optimal stationary policies. Second, to further distinguish the expected-optimal stationary policies, we introduce the variance minimisation problem, prove that it is equivalent to a new f

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33

Alva-Argáez, A., A. Vallianatos, and A. Kokossis. "A multi-contaminant transhipment model for mass exchange networks and wastewater minimisation problems." Computers & Chemical Engineering 23, no. 10 (1999): 1439–53. http://dx.doi.org/10.1016/s0098-1354(99)00303-8.

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Vo, Q. B., and N. Y. Foo. "Reasoning about Action: An Argumentation - Theoretic Approach." Journal of Artificial Intelligence Research 24 (October 1, 2005): 465–518. http://dx.doi.org/10.1613/jair.1602.

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We present a uniform non-monotonic solution to the problems of reasoning about action on the basis of an argumentation-theoretic approach. Our theory is provably correct relative to a sensible minimisation policy introduced on top of a temporal propositional logic. Sophisticated problem domains can be formalised in our framework. As much attention of researchers in the field has been paid to the traditional and basic problems in reasoning about actions such as the frame, the qualification and the ramification problems, approaches to these problems within our formalisation lie at heart of the e

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Jamal, Sameerah. "Imaging Noise Suppression: Fourth-Order Partial Differential Equations and Travelling Wave Solutions." Mathematics 8, no. 11 (2020): 2019. http://dx.doi.org/10.3390/math8112019.

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In this paper, we discuss travelling wave solutions for image smoothing based on a fourth-order partial differential equation. One of the recurring issues of digital imaging is the amount of noise. One solution to this is to minimise the total variation norm of the image, thus giving rise to non-linear equations. We investigate the variational properties of the Lagrange functionals associated with these minimisation problems.

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Bounkhel, Messaoud. "Generalized Projections on Closed Nonconvex Sets in Uniformly Convex and Uniformly Smooth Banach Spaces." Journal of Function Spaces 2015 (2015): 1–7. http://dx.doi.org/10.1155/2015/478437.

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The present paper is devoted to the study of the generalized projectionπK:X∗→K, whereXis a uniformly convex and uniformly smooth Banach space andKis a nonempty closed (not necessarily convex) set inX. Our main result is the density of the pointsx∗∈X∗having unique generalized projection over nonempty close sets inX. Some minimisation principles are also established. An application to variational problems with nonconvex sets is presented.

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Andal C., Kothai, and Jayapal R. "Improved GA based power and cost management system in a grid-associated PV-wind system." International Journal of Power Electronics and Drive Systems (IJPEDS) 12, no. 4 (2021): 2531. http://dx.doi.org/10.11591/ijpeds.v12.i4.pp2531-2544.

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Renewable hybrids play an essential part in assisting India with quickening the decarbonisation of power production and lowering power production expense in the medium term. PV and wind energy are complementary to each other, making the system to generate electricity almost throughout the year. In this paper, a grid-associated PV-wind energy system tied with a battery is analysed. PV, wind, grid and battery are the sources to be effectively scheduled for uninterrupted power and cost minimisation. Energy management controllers use optimisation strategies for effective utilisation of sources and

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Mostaghim, Sanaz, Christoph Steup, and Heiner Zille. "Multi-objective distance minimization problems – applications in technical systems." at - Automatisierungstechnik 66, no. 11 (2018): 964–74. http://dx.doi.org/10.1515/auto-2018-0054.

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Abstract This article describes the Distance Minimisation Problem (DMP) from a metaheuristic optimisation point of view. The problem is motivated by real applications and can be used to test the performance of optimisation methods like Evolutionary Algorithms. After formally describing the problem and its extensions using different metrics or dynamics, we perform experiments with well-known metaheuristic methods to demonstrate the performance on various DMP instances. The results show that modern algorithms like NSGA-II and SMPSO can struggle with this kind of problem under certain conditions,

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Clark, Ed, Nikos Katzourakis, and Boris Muha. "Vectorial variational problems in L ^∞ constrained by the Navier–Stokes equations*." Nonlinearity 35, no. 1 (2021): 470–91. http://dx.doi.org/10.1088/1361-6544/ac372a.

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Abstract We study a minimisation problem in L p and L ∞ for certain cost functionals, where the class of admissible mappings is constrained by the Navier–Stokes equations. Problems of this type are motivated by variational data assimilation for atmospheric flows arising in weather forecasting. Herein we establish the existence of PDE-constrained minimisers for all p, and also that L p minimisers converge to L ∞ minimisers as p → ∞. We further show that L p minimisers solve an Euler–Lagrange system. Finally, all special L ∞ minimisers constructed via approximation by L p minimisers are shown to

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Ujang, Z., and C. Buckley. "Water and wastewater in developing countries: present reality and strategy for the future." Water Science and Technology 46, no. 9 (2002): 1–9. http://dx.doi.org/10.2166/wst.2002.0192.

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This paper summarises the paper presentation sessions at the Conference, as well giving insights on the issues related to developing countries. It also discusses the present status of practice and research on water and wastewater management, and projected future scenario based not only on the papers presented in the Conference, but also on other sources. The strategy is presented to overcome many problems in developing countries such as rapid urbanization, industrialization, population growth, financial and institutional problems and, depleting water resources. The strategy consists of Integra

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41

Maroński, Ryszard. "Aeronautical Inspirations in Biomechanics." Polish Journal of Sport and Tourism 24, no. 1 (2017): 5–9. http://dx.doi.org/10.1515/pjst-2017-0001.

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Abstract Introduction. The goal of the paper is to show that some problems formulated in the dynamics of atmospheric flight are very similar to the problems formulated in the biomechanics of motion and medicine. Three problems were compared: minimumheat transfer from the boundary layer to the ballistic missile skin, minimum-time ski descent, and the minimisation of the negative cumulated effect of the drug in cancer chemotherapy. Material and methods. All these problems are solved using the same method originally developed for aerospace systems - the method of Miele (the extremisation method o

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Evans, Ben James, Ben Smith, Sean Peter Walton, Neil Taylor, Martin Dodds, and Vladeta Zmijanovic. "A Mesh-Based Approach for Computational Fluid Dynamics-Free Aerodynamic Optimisation of Complex Geometries Using Area Ruling." Aerospace 11, no. 4 (2024): 298. http://dx.doi.org/10.3390/aerospace11040298.

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In this paper, an optimisation procedure is introduced that uses a significantly cheaper, and CFD-free, objective function for aerodynamic optimisation than conventional CFD-driven approaches. Despite the reduced computational cost, we show that this approach can still drive the optimisation scheme towards a design with a similar reduction in drag coefficient for wave drag-dominated problems. The approach used is ‘CFD-free’, i.e., it does not require any computational aerodynamic analysis. It can be applied to geometries discretised using meshes more conventionally used for ‘standard’ CFD-base

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Jiang, Daijun, Hui Feng, and Jun Zou. "Quadratic convergence of Levenberg-Marquardt method for elliptic and parabolic inverse robin problems." ESAIM: Mathematical Modelling and Numerical Analysis 52, no. 3 (2018): 1085–107. http://dx.doi.org/10.1051/m2an/2018016.

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We study the Levenberg-Marquardt (L-M) method for solving the highly nonlinear and ill-posed inverse problem of identifying the Robin coefficients in elliptic and parabolic systems. The L-M method transforms the Tikhonov regularized nonlinear non-convex minimizations into convex minimizations. And the quadratic convergence of the L-M method is rigorously established for the nonlinear elliptic and parabolic inverse problems for the first time, under a simple novel adaptive strategy for selecting regularization parameters during the L-M iteration. Then the surrogate functional approach is adopte

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Tikhomirov, Dmitry, and Vladimir Plotnikov. "The minimisation of risks in project finance: approaches to financial modelling and structuring." MATEC Web of Conferences 193 (2018): 05069. http://dx.doi.org/10.1051/matecconf/201819305069.

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Complex investment projects require detailed and thorough analysis of numerous aspects and proper actions taken on all stages of their development. The article considers peculiarities of project finance, major risks of projects for the main participants, provides practical recommendations on approaches to project financial models, and brief review of recourse and debt service undertaking mechanism. The article is the result of practical experience and analysis of the problems of project finance based on implementation of the largest investment projects.

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Le, Hoang Son, Rini Akmeliawati, and Gustavo Carneiro. "Domain Generalisation with Domain Augmented Supervised Contrastive Learning (Student Abstract)." Proceedings of the AAAI Conference on Artificial Intelligence 35, no. 18 (2021): 15821–22. http://dx.doi.org/10.1609/aaai.v35i18.17907.

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Domain generalisation (DG) methods address the problem of domain shift, when there is a mismatch between the distributions of training and target domains. Data augmentation approaches have emerged as a promising alternative for DG. However, data augmentation alone is not sufficient to achieve lower generalisation errors. This project proposes a new method that combines data augmentation and domain distance minimisation to address the problems associated with data augmentation and provide a guarantee on the learning performance, under an existing framework. Empirically, our method outperforms b

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Sagan, Joanna, and Anna Sobotka. "Analysis of Factors Affecting the Circularity of Building Materials." Materials 14, no. 23 (2021): 7296. http://dx.doi.org/10.3390/ma14237296.

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A circular economy requires closed circuits of consumed resources. Construction generates approximately 50% of solid waste globally, which is difficult to manage. The aim of this article was to identify the factors that determine the development of circular construction in the context of waste minimisation in the life cycle of building structures. The identification of cause-and-effect relationships by means of the DEMATEL method allows the problems of construction waste management to be taken into account in the context of the development of sustainable construction and fulfilling the princip

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Alfaro, A., M. Doan, J. Finke, M. Galdes, and M. Zohdy. "Application of Divide and Conquer Extended Genetic Algorithm to Tertiary Protein Structure of Chymotrypsin Inhibitor-2." Applied Bionics and Biomechanics 3, no. 4 (2006): 263–71. http://dx.doi.org/10.1155/2006/841046.

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Determining the method by which a protein thermodynamically folds and unfolds in three-dimension is one of the most complex and least understood problems in modern biochemistry. Misfolded proteins have been recently linked to diseases including Amyotrophic Lateral Sclerosis and Alzheimer's disease. Because of the large number of parameters involved in defining the tertiary structure of proteins, based on free energy global minimisation, we have developed a new Divide and Conquer (DAC) Extended Genetic Algorithm. The approach was applied to explore and verify the energy landscape of protein chy

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MH, Dr Karim, Seied Beniamin Hosseini, Dr Ayesha Farooq, Hossein (Adib) Arab, and Ali Takroosta. "A Strategic Review on Economic Dispatch Distribution and Environmental Considerations." Restaurant Business 118, no. 12 (2019): 166–76. http://dx.doi.org/10.26643/rb.v118i12.13211.

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Power systems contain four generic parts, including production, transmission, dispatch distribution, and consumption. Generally, dispatch distribution between powerhouses modelled with the goal of minimisation in utilisation cost. However, Environmental concerns were given more attention to powerhouse emissions such as SO2, CO2 and NO cause to investigate modelling in recent researches. However consideration of the objectives of fuel cost and emission value in the dispatch distribution problems known as the eco-environmental dispatch distribution. Although Due to the paradox between the reduct

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Avanzini, G., and G. de Matteis. "Optimal takeoff performance of a vectored thrust aircraft." Aeronautical Journal 99, no. 987 (1995): 275–81. http://dx.doi.org/10.1017/s0001924000028451.

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AbstractThe optimal takeoff performance of a vectored thrust V/Stol aircraft is analysed by a nonlinear programming method based on a sequential unconstrained minimisation technique. The study is focused on ship operations which involve VTO and ski-jump STO launches. Once the optimal ramp geometry is determined, minimum-fuel and minimum-time problems are solved. The optimal control sequences are evaluated and the effects of ship motion and atmospheric winds are discussed. A microburst encounter following an STO launch is also dealt with in terms of aircraft survival.

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Basupi, Innocent, Zoran Kapelan, and David Butler. "Reducing life-cycle carbon footprints in the redesign of water distribution systems." Journal of Water and Climate Change 4, no. 3 (2013): 176–92. http://dx.doi.org/10.2166/wcc.2013.004.

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Water distribution systems (WDSs) contribute to undesirable greenhouse gas (GHG) emissions that are generated through their component fabrication, construction, operation and disposal processes. The concentration of GHGs in the atmosphere is strongly associated with global warming and climate change. In order to meet the consequent challenge of limiting GHG emissions, the problem of WDS redesign is formulated here as a multi-objective optimisation problem. The three objectives are as follows: (1) minimisation of total redesign cost, (2) maximisation of the WDS resilience, and (3) minimisation

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