Optimal Operation of High-Speed Trains Using Hybrid Model Predictive Control by Yingze Yang, Zheng Xu, Weirong Liu, Heng Li, Rui Zhang, Zhiwu Huang

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Inbound traffic capture link-design problem independent of assumptions on users’ route choices by Ruri Sase, Satoshi Sugiura

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Research on Day Ahead Dynamic Reactive Power Optimization Based on Generator Operation by Bin LU, Shan GAO, Desheng LI

“…Moreover, the action times of discrete control equipment were taken as global inequality constraints, and a complete 24-hours non-linear mixed integer dynamic reactive power optimization mathematical model was established. …”
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Aggregated Distribution Grid Flexibilities in the Overlaying Grid Operational Management by Neelotpal Majumdar, Lutz Hofmann

“…Therefore, two approaches are proposed in the paper to apply the FOR constraints in the HV grid operational management. First, a mixed integer linear programming (MILP) based optimization approach for alleviating the HV grid constraint violations is proposed, which addresses the non-convexity of the FOR using piecewise segmentation. …”
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Multiobjective Collaborative Optimization Method for the Urban Rail Multirouting Train Operation Plan by Lianbo Deng, Qi Peng, Li Cai, Junhao Zeng, Nava Raj Bhatt

“…Based on the principle of “operating by the flow” and the requirement for precise allocation of transport capacity for multiple routes, this article constructs a multiobjective nonlinear integer programming model by taking the minimized generalized travel cost of passengers, total running mileage of trains, fluctuation of trains for each route (as optimization targets), and the combination of requirements of both headways and fully loaded rates as constraints. …”
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Optimization of high-speed train timetable based on regenerative braking energy utilization by GE Xin, ZHANG Yuzhao, HUANG Zhipeng

“…In this study, we construct an integer programming model with the goal of maximizing the utilization of the regenerative braking energy in the timetable. …”
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Solving an Integrated Project Portfolio Selection and Contractor Selection Problem: Fuzzy Goal Programming Based on Fuzzy Preference Relations by Mostafa Zahedirad, Kaveh Khalili-Damghani, Vahidreza Ghezavati, Alireza Rashidi Komijan

“…In this paper, we propose an integrated project portfolio optimization and contractor selection problem. The problem is modeled through a multi-objective Mixed Integer Linear Programming (MILP) model. …”
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Optimal Network Design for Municipal Waste Management: Application to the Metropolitan City of Rome by Marco Boresta, Anna Livia Croella, Claudio Gentile, Laura Palagi, Diego Maria Pinto, Giuseppe Stecca, Paolo Ventura

“…<i>Methods:</i> The problem is formulated as a mixed integer linear program (MILP) that includes constraints on vehicle allocation to shifts and driver requirements. …”
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Minimum-Energy Scheduling of Flexible Job-Shop Through Optimization and Comprehensive Heuristic by Oludolapo Akanni Olanrewaju, Fabio Luiz Peres Krykhtine, Felix Mora-Camino

“…An original two-level mixed-integer formulation of this optimization problem is proposed, where the processed flows of material and their timing are explicitly considered. …”
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A load margin calculation method considering optimized reactive power support by Yuejian Wu, Xiaoming Dong, Tianguang Lu, Shunxiang Yu, Chengfu Wang, Zhengshuo Li

“…A constraint interval adjustment scheme is presented to guarantee the errors under control. …”
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Managing Surcharge Risk in Strategic Fleet Deployment: A Partial Relaxed MIP Model Framework with a Case Study on China-Built Ships by Yanmeng Tao, Ying Yang, Shuaian Wang

“…We formulate the problem as a bi-objective mixed-integer programming model and prove that the ship chartering constraint matrix is totally unimodular, enabling the reformulation of the model into a partially relaxed MIP that preserves optimality while improving computational efficiency. …”
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An integrated planning framework for optimal power generation portfolio including frequency and reserve requirements by Olayinka Ayo, Paola Falugi, Goran Strbac

“…Non‐convex quadratic nadir constraints were efficiently solvable to global optimality by applying McCormick relaxations and branching techniques in an advanced solver.…”
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A Novel Optimization Approach for Educational Class Scheduling with considering the Students and Teachers’ Preferences by Yu Chen, Mahmonir Bayanati, Maryam Ebrahimi, Sadaf Khalijian

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Spatial Constellation Design for MIMO Visible Light Communication Based on the Optimal Geometric Shaping by Jia-Ning Guo, Jian Zhang

“…Firstly, we derive the optimal geometric shaping region for the MIMO-VLC system under the aforementioned power constraints. …”
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End-to-end throughput evaluation model and optimization method for dual-mode mesh network by SU Zhan, WEN Bo, ZHU Xiaorong

“…Then, considering the constraints of sustained coefficients between multiple subnets, an integer-constrained optimization problem for throughput in multiple sub-nets was formulated, and the optimal solution represented the uplink capacity of the network. …”
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Gradual Optimization of University Course Scheduling Problem Using Genetic Algorithm and Dynamic Programming by Xu Han, Dian Wang

“…The university course scheduling problem (UCSP) is a challenging combinatorial optimization problem that requires optimization of the quality of the schedule and resource utilization while meeting multiple constraints involving courses, teachers, students, and classrooms. …”
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Revolutionizing Open-Pit Mining Fleet Management: Integrating Computer Vision and Multi-Objective Optimization for Real-Time Truck Dispatching by Kürşat Hasözdemir, Mert Meral, Muhammet Mustafa Kahraman

“…Through the integration of computer vision and multi-objective optimization, it seeks to enhance operational efficiency and optimize fleet management in open-pit mining. …”
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Day-Ahead Optimal Dispatch for Active Distribution Network Considering Action Cost of Devices by Yuanyuan YUE, Zhuding WANG, Hui WANG, Xuan LUO, Zhou SU, Zijia HUI

“…Establish a daily optimal scheduling model with the objective function of minimizing the comprehensive operating cost and the constraints of Distflow branch power flow and equipment safety operation. …”
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Optimization Model for Safeguarding Vulnerable Components in Integrated Energy Systems Based on Weighted Betweenness by ZHANG Chenwei, WANG Ying, LI Yaping, ZHANG Kaifeng

“…The model optimization provides the optimal protection strategies within the allocated budget. …”
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Optimal Design Method of Integrated Energy Systems Considering Staged Planning and Equipment Replacement by Lei ZOU, Yiming TANG, Zhuping LIU, Zhengyong WU, Chao FANG, Chaoqun WANG, Fushuan WEN

“…Finally, considering the influence of economic factors such as nominal interest rates and inflation rates, an objective function, involving investment costs, operating costs, and equipment residual value income, is constructed, with the optimal economical performance as the goal. The mixed integer linear programming technique is used to solve the model. …”
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