Searched for: subject:"optimization"
(1 - 20 of 871)

Pages

document
Bianchi, M. (author), Grammatico, S. (author)
We design a distributed algorithm for learning Nash equilibria over time-varying communication networks in a partial-decision information scenario, where each agent can access its own cost function and local feasible set, but can only observe the actions of some neighbors. Our algorithm is based on projected pseudo-gradient dynamics, augmented...
journal article 2021
document
Kocaman, E. S. (author), Chen, B. Y. (author), Pinho, S. T. (author)
Design and optimisation of large structures, including the positioning of lower-level components, typically require extensive user involvement and sequential mechanical analysis/optimisation iterations. This paper presents an original method that enables adaptive positioning of lower-level models (such as components) within higher level...
journal article 2020
document
Hong, Z. (author), Peeters, D.M.J. (author), Turteltaub, S.R. (author)
In this paper, design strategies are developed to explore better approaches of enforcing local layer-wise curvature constraints in the optimization of variable stiffness laminates in order to ensure the manufacturability of optimized designs based on the limitations of automated fiber placement. The methods developed here aim to improve an...
journal article 2020
document
Doekemeijer, B.M. (author)
Open-loop wake steering inconsistently improves the energy yield of wind farms in field experiments in the literature. This thesis matures wind farm control technologies for power maximization in a model-based closed-loop framework towards real-world practical applicability. Firstly, open-loop wake steering is evaluated on a commercial onshore...
doctoral thesis 2020
document
Khastieva, D. (author)
Environmental and political factors determine long-term development for renewable generation around the world. The rapid growth of renewable generation requires timely changes in power systems operation planning, investments in additional flexible assets and transmission capacity. The development trends of restructured power systems suggest that...
doctoral thesis 2020
document
Ho-Huu, V. (author), Hartjes, S. (author), Perez Castan, J.A. (author), Visser, H.G. (author), Curran, R. (author)
This paper presents the development of a multilevel optimization framework for the design and selection of departure routes, and the distribution of aircraft movements among these routes, while taking the sequence and separation requirements for aircraft on runways and along selected routes into account. The main aim of the framework is to...
journal article 2020
document
Hayamizu, Momoko (author), Huber, Katharina T. (author), Moulton, Vincent (author), Murakami, Yukihiro (author)
The problem of realizing finite metric spaces in terms of weighted graphs has many applications. For example, the mathematical and computational properties of metrics that can be realized by trees have been well-studied and such research has laid the foundation of the reconstruction of phylogenetic trees from evolutionary distances. However,...
journal article 2020
document
Ho-Huu, V. (author)
With a significant impact on the development of the global economy and society, air transport is predicted to rapidly grow in the coming years. Unfortunately, while delivering positive global economic and social benefits, air transport has also generated an adverse influence on the environment, especially on the quality of life of communities...
doctoral thesis 2020
document
Nakayama, S. (author)
The quality and business aspects are both of particular importance in determining the type of seismic acquisition. Usually, a strong emphasis on cost reduction is inevitable. On the other hand, there is an increasing demand for the acquisition of high-quality seismic data that can contribute to the various stages in the field development profile...
doctoral thesis 2020
document
Wang, Da (author), Rueda, José L. (author), Rakhshani, E. (author), van der Meijden, M.A.M.M. (author)
Unlike synchronous generators, wind turbines cannot directly respond to large disturbances, which may cause transient instability, due to their power electronic-based interface and maximum power control strategy. To effectively monitor the influence of wind turbines, this paper proposes an approach that combines decision trees (DTs), and a...
journal article 2020
document
Sereeter, B. (author)
During the normal operation, control and planning of the power system, grid operators employ numerous tools including the Power Flow (PF) and the Optimal Power Flow (OPF) computations to keep the balance in the power system. The solution of the PF computation is used to assess whether the power system can function properly for the given...
doctoral thesis 2020
document
He, Z. (author)
Network performance is determined by the interplay of underlying structures and overlying dynamic processes on networks. This thesis mainly considers two types of collective dynamics on networks, spread and transport, which are ubiquitous in our daily lives, ranging from information propagation, disease spreading, to molecular motors on...
doctoral thesis 2020
document
Hong, Z. (author)
Reducing weight and improving strength of structures have always been major design goals in the aerospace industry since its inception. In particular, strength directly affects the safety and serviceability of an airplane and is therefore of great importance in structural design. Improving the strength of an airframe can effectively increase its...
doctoral thesis 2020
document
Nino-Ruiz, Elias David (author), Mancilla-Herrera, Alfonso (author), Lopez Restrepo, S. (author), Quintero-Montoya, Olga (author)
This paper proposes an efficient and practical implementation of the Maximum Likelihood Ensemble Filter via a Modified Cholesky decomposition (MLEF-MC). The method works as follows: via an ensemble of model realizations, a well-conditioned and full-rank square-root approximation of the background error covariance matrix is obtained. This...
journal article 2020
document
Bosboom, J. (author)
This thesis investigates the behaviour of the often used point-wise skill score, the MSESSini a.k.a. BSS, and develops new error metrics that, as opposed to point-wise metrics, take the spatial structure of morphological patterns into account. The...
doctoral thesis 2020
document
Marquez Calvo, O.O. (author)
The exercise of solving engineering problems that require optimisation procedures can be seriously affected by uncertain variables, resulting in potential underperforming solutions. Although this is a well-known problem, important knowledge gaps are still to be addressed. For example, concepts of robustness largely differ from study to study,...
doctoral thesis 2020
document
Conceicao Pereira, L. (author), Homem de Almeida Correia, G. (author), Tavares, José Pedro (author)
With automated vehicles (AVs), reversible lanes could be a sustainable transportation solution once there is vehicle-to-infrastructure connectivity informingAVs about the lane configuration changes. This paper introduced the reversible lane network design problem (RL-NDP), formulated in mixed-integer non-linear mathematical programming-both...
journal article 2020
document
Bjelonic, Marko (author), Sekoor Lakshmana Sankar, Prajish (author), Dario Bellicoso, C. (author), Vallery, H. (author), Hutter, Marco (author)
Wheeled-legged robots have the potential for highly agile and versatile locomotion. The combination of legs and wheels might be a solution for any real-world application requiring rapid, and long-distance mobility skills on challenging terrain. In this paper, we present an online trajectory optimization framework for wheeled quadrupedal robots...
journal article 2020
document
Wang, N. (author), Verzijlbergh, R.A. (author), Heijnen, P.W. (author), Herder, P.M. (author)
Variable Renewable Energy Sources (VRES) are characterized by intensive land-use and variable production. In existing optimization models that minimize the total cost of the energy system, location-specific VRES production profiles are often used to estimate VRES potential, but land-use and land cover aspects have been largely ignored. In this...
journal article 2020
document
van den Boomen, M. (author), Spaan, M.T.J. (author), Shang, Y. (author), Wolfert, A.R.M. (author)
Infrastructure maintenance and replacement decisions are subject to uncertainties such as regular asset degradation, structural failure, and price uncertainty. In the engineering domain, Markov Decision Processes (MDPs) typically focus on uncertainties regarding asset degradation and structural failure. While the literature in the engineering...
journal article 2020
Searched for: subject:"optimization"
(1 - 20 of 871)

Pages