Results 11 to 20 of about 719,973 (302)

Optimizing Expected Utility in a Multinomial Logit Model with Position Bias and Social Influence [PDF]

open access: yes, 2014
Motivated by applications in retail, online advertising, and cultural markets, this paper studies how to find the optimal assortment and positioning of products subject to a capacity constraint. We prove that the optimal assortment and positioning can be
Abeliuk, Andres   +3 more
core   +1 more source

EFFECTS OF DIFFERENT WAVE SPECTRA ON DYNAMIC POSITIONING ACCURACY

open access: yesBrodogradnja, 2018
To achieve high accuracy of positioning method for ships which have good mobility and are uninfluenced by the water depth, the dynamic positioning system has come into being.
Xinkuan Yan, Chaohe Chen, Tianhui Fan
doaj   +1 more source

Dynamic Positioning of Autonomous Underwater Vehicle in Shallow Water under the Influence of External Disturbances

open access: yesСовременные информационные технологии и IT-образование, 2022
This work is devoted to the formation of dynamic positioning system for autonomous underwater vehicle with multipurpose structure. Such vehicles are applied to oceanographic research and bottom exploration.
Irina Litvishko
doaj   +1 more source

Thrust distribution of marine power system based on improved SHADE algorithm

open access: yesZhongguo Jianchuan Yanjiu, 2020
[Objectives] To solve the issue of thrust loss caused by the interaction between the ship thrusters and the excessive power fluctuation in the power system, an improved A success-history adaptive differential evolution(SHADE)algorithm is proposed ...
ZHU Yuwen, XIAO Jianmei, WANG Xihuai
doaj   +1 more source

Comparison of Different Power Balance Control Methods for Battery Energy Storage Systems on Hybrid Marine Vessels

open access: yesIEEE Access, 2022
In this paper, different power balance control methods for hybrid marine vessels are analyzed. First, the power grid of a marine vessel is modeled using MATLAB and Simulink. Simulations are then performed using real power plant load data captured from an
Jan-Henri Montonen   +6 more
doaj   +1 more source

Modeling Techniques and Control Strategies for Jack-Up Rig: A State of the Art and Challenges

open access: yesIEEE Access, 2021
In recent years, for many offshore projects, including offshore oil and gas exploration and offshore wind farm construction, it is necessary to control the position of elevating of Jack-up Rig (JuR) in stable and balanced control. Designing the elevating
Xuan-Kien Dang, Tien-Dat Tran
doaj   +1 more source

Analysis of Energy Storage Implementation on Dynamically Positioned Vessels

open access: yesEnergies, 2019
Blackout prevention on dynamically positioned vessels during closed bus bar operation, which allows more efficient and eco-friendly operation of main diesel generators, is the subject of numerous studies. Developed solutions rely mostly on the ability of
Aleksandar Cuculić   +3 more
doaj   +1 more source

Improving the Performance of Dynamic Ship Positioning Systems: A Review of Filtering and Estimation Techniques

open access: yesJournal of Marine Science and Engineering, 2020
Various operations at sea, such as maintaining a constant ship position and direction, require a complex control system. Under such conditions, the ship needs an efficient positioning technique.
Denis Selimović   +3 more
doaj   +1 more source

Constrained Control Design for Dynamic Positioning of Marine Vehicles with Control Allocation [PDF]

open access: yesModeling, Identification and Control, 2009
In this paper, we address the control design problem of positioning of over-actuated marine vehicles with control allocation. The proposed design is based on a combined position and velocity loops in a multi-variable anti-windup implementation together ...
Tristan Perez, Alejandro Donaire
doaj   +1 more source

Dynamic Positive Equilibrium Problem [PDF]

open access: yesSSRN Electronic Journal, 2001
The Dynamic Positive Equilibrium Problem (DPEP) is a methodology for dealing with time series about economic agents' decisions, regardless of the amount of available information. The approach is articulated in three phases, as in the static counterpart Symmetric Positive Equilibrium Problem (SPEP), with the variant that it must be preceded by the ...
openaire   +3 more sources

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