Optimization problems

In operating the distribution network, the problem of reconfiguration distribution network according to the change of load to reduce power loss has partly reduced the operation cost of the distribution network but it can impact the reliability of power supply to the load.

11p viengfa 28-10-2024 2 1   Download

This paper introduces the application of the standard Particle Swarm Optimization (PSO) algorithm with discrete integer variables to solve the problem of optimizing the position of tower cranes and material supply points.

10p viengfa 28-10-2024 2 1   Download

The article presents some theoretical foundations to solve the problem of dynamic control and optimizing the structure of multifunctional carbon nanofiber-reinforced material plates with integrated piezoelectric crystal.

13p viling 11-10-2024 0 0   Download

Through the process of analysing related documents and object characteristics in FMCG companies, paper aim to build vehicle roung with me window (CVRTW) model to optimize the delivering process, thus satisfying customer demand. To ensure the quality of the results, the model will be solved using the simulated annealing algorithm (SAalgorithm).

8p vifilm 11-10-2024 1 0   Download

Artificial neural network (ANN), a powerful technique, has been used widely over the last decades in many scientific fields including engineering problems. However, the backpropagation algorithm in ANN is based on a gradient descent approach.

15p vibecca 01-10-2024 0 0   Download

In this paper, we study the polynomial optimization problem over a non-compact semi-algebraic set, for which its constraint set of polynomials

11p vibecca 01-10-2024 0 0   Download

A new formulation to calculate the shakedown limit load of Kirchhoff plates under stochastic conditions of strength is developed. Direct structural reliability design by chance constrained programming is based on the prescribed failure probabilities, which is an effective approach of stochastic programming if it can be formulated as an equivalent deterministic optimization problem.

4p vibecca 01-10-2024 2 0   Download

The research "Solving constrained optimization tasks in civil engineering using εDifferential Evolution developed with Visual C#. NET" work aims at constructing an evolutionary algorithm based approach for solving complex constrained optimization tasks. The  -Differential Evolution (  -DE) proposed by Takahama, et al. [1], is selected as the employed evolutionary approach. The  -DE has been proven to be capable optimizer for tackling sophisticated problems in various engineering field. In this study, this optimization method is developed in Visual C#.

5p xuanphongdacy09 29-09-2024 1 1   Download

In this paper, an improved version of Differential Evolution algorithm, called iDE, is introduced to solve design optimization problems of composite laminated beams. The beams used in this research are Timoshenko beam models computed based on analytical formula.

11p vifilm 24-09-2024 8 1   Download

In this study, the differential evolution algorithm is used for solving the optimum design problem of composite cellular beams. The objective function is the minimum weight of cellular beam while the design constraints include satisfying the ultimate limit states, the serviceability limit states and the geometric limitations.

11p viyoko 24-09-2024 2 1   Download

Bài viết Tối ưu bố trí cơ sở vật chất trên mặt bằng công trình xây dựng sử dụng thuật toán lai ghép kiến sư tử (ALO) đề xuất một thuật toán mới lai ghép giữa phương pháp đột biến và trao đổi chéo, phương pháp lựa chọn cạnh tranh (Tournament selection), phương pháp học dựa trên sự đối diện (Opposition-based learning) với thuât toán cải tiến (IALO) dựa trên thuật toán Ant Lion Optimizer (ALO) để giải quyết vấn đề (Quadratic Assignment Problems – QAP) tối ưu hóa bố trí cơ sở vật chất trên mặt bằng xây dựng tìm ra một kết quả tối ưu nhất trong khoảng thời gian ngắn nhất.

10p viironman 02-06-2023 10 3   Download

Waste from Jackfruit has little economic value and often causes serious environmental problems. The conversion of jackfruit waste will help reduce waste treatment costs, provide a potential source of raw materials for the activated carbon (AC) and increase economic value. In this study, the ACs from the Jackfruit shell and pulp were synthesized by microwave assistance for removing organic dyes.

13p vidoctorstrange 06-05-2023 10 2   Download

This research is to design the Indonesian LPG distribution system through Location-allocation modelling taking into account the existing facilities. Location-allocation model is developed in fixed charge capacitated location-allocation problem considering transportation and inventory decisions. Multi echelon LPG distribution system is considered to be modelled from regional warehouse to agents.

616p runthenight04 02-02-2023 8 3   Download

In the work "Master's thesis of Science: User delay tolerance - aware edge node placement optimization for cost minimization", we review the related works and identify the research gaps in Chapter 2. Then, we formulate our problem in Chapter 3 and prove the NP-hardness of the problem in Chapter 4. Base on our problem formulation, we provide a suit of solutions in Chapter 5. After that, we do an comprehensive evaluation on our proposed methods in Chapter 6. Finally, we summarise our work in Chapter 7.

64p runthenight04 02-02-2023 7 3   Download

This paper proposes a solution to the power grid system's reactive power optimization scheduling problem (RPSP) based on a novel Manta ray forging algorithm (MRFO) evolutionary algorithm. By applying the penalty function for the reactive power optimization model, the management of the constraints of the RPSP optimization formula is counting on for calculation.

10p linyanjun_2408 21-04-2022 16 1   Download

This paper suggests a solution for the image segmentation (IS) problem with the multilevel thresholding based on one of the latest hybrid swarm computation optimization algorithms, particle swarms, and gravitational search (PSGA). The experimental results are comparable with other state-of-the-art algorithms that show that the PSGA on selected images is better than the competitors.

10p linyanjun_2408 21-04-2022 14 1   Download

Research objectives of the thesis: Research the theories of complex fuzzy sets, complex fuzzy logic and measures based on complex fuzzy sets; research and development of fuzzy inference system based on complex fuzzy sets; research applied techniques to reduce rules, optimize fuzzy rules in complex fuzzy inference system; research on how to represent rules based on fuzzy knowledge graphs to reduce inference computation time for the test set and deal with the cases where the new dataset is not present in the training data set.

27p beloveinhouse01 15-08-2021 15 4   Download

The research related to this dissertation was supported by Vietnam National Foundation for Science and Technology Development (NAFOSTED) and Hanoi National University of Education.

136p elephantcarrot 02-07-2021 19 5   Download

The Lipschitz-like property and the Robinson stability of the solution map of a parametric linear constraint system by means of normal coderivative, the Mordukhovich criterion, and a related theorem due to Levy and Mordukhovich.

124p elephantcarrot 02-07-2021 25 5   Download

The dissertation has four chapters: Chapter 1 - Existence of solutions; Chapter 2 - Stability for global, local and stationary solution sets; Chapter 3 - Continuity and directional differentiability of the optimal value function; Chapter 4 - Stability for extended trust region subproblems.

143p monsterhunterer 20-06-2021 8 3   Download