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Towards efficient waste management: identification of waste flow chains in micro-regional detail through monitored data 实现高效废物管理：通过监测数据确定微观区域废物流动链的细节
IF 2.1 3区 工程技术
Optimization and Engineering Pub Date : 2024-06-18 DOI: 10.1007/s11081-024-09897-1
Lucie Němcová, Jaroslav Pluskal, Radovan Šomplák, Jakub Kůdela
{"title":"Towards efficient waste management: identification of waste flow chains in micro-regional detail through monitored data","authors":"Lucie Němcová, Jaroslav Pluskal, Radovan Šomplák, Jakub Kůdela","doi":"10.1007/s11081-024-09897-1","DOIUrl":"https://doi.org/10.1007/s11081-024-09897-1","url":null,"abstract":"<p>Countries around the world are gradually implementing the transition to a circular economy in waste management. This effort should be initiated already at the waste producers. It is necessary to plan and monitor waste management in as much detail as possible, i.e. at the level of micro-regions. At present, only indicators at the national level are analysed, as more detailed data at the micro-regional level are often not available or are burdened with significant errors and inconsistencies. The calculation of waste management indicators for micro-regions will allow to identify the potential for increasing material or energy recovery and to plan the necessary infrastructure directly to these locations instead of blanket and often ineffective legislative actions. This paper presents an approach for determining the producer-treatment linkage, i.e., provides information about each produced waste, where it was treated, and in what way. Such information is often not available based on historical waste management data as there are repeated waste transfers and often aggregated within a micro-region. The network flow approach is based on an iterative procedure combining a simulation with multi-criteria optimization. The chosen criteria replicate expert estimates in investigated issue such as minimum flow splitting, and minimum transfer micro-regions. A data reconciliation is performed where the deviation from all simulations is minimized, given that the capacity constraints of nodes and arcs resulting from the database must be satisfied. The approach is tested on a generated sample task to evaluate the precision and time complexity of the developed tool. Finally, the presented approach is applied to address a case study in the Czech Republic, within which it is possible to identify treatment location and methods for waste from individual regions.</p>","PeriodicalId":56141,"journal":{"name":"Optimization and Engineering","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2024-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141510258","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Two sufficient descent spectral conjugate gradient algorithms for unconstrained optimization with application 无约束优化的两种充分下降谱共轭梯度算法及其应用
IF 2.1 3区 工程技术
Optimization and Engineering Pub Date : 2024-06-13 DOI: 10.1007/s11081-024-09899-z
Sulaiman Mohammed Ibrahim, Nasiru Salihu
{"title":"Two sufficient descent spectral conjugate gradient algorithms for unconstrained optimization with application","authors":"Sulaiman Mohammed Ibrahim, Nasiru Salihu","doi":"10.1007/s11081-024-09899-z","DOIUrl":"https://doi.org/10.1007/s11081-024-09899-z","url":null,"abstract":"","PeriodicalId":56141,"journal":{"name":"Optimization and Engineering","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2024-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141349404","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Network optimization model approach to the volume-to-point heat conduction problem 体积-点热传导问题的网络优化模型方法
IF 2.1 3区 工程技术
Optimization and Engineering Pub Date : 2024-06-13 DOI: 10.1007/s11081-024-09895-3
Ricardo Poley Martins Ferreira, Ricardo Luiz Utsch de Freitas Pinto, Philippe Mahey
{"title":"Network optimization model approach to the volume-to-point heat conduction problem","authors":"Ricardo Poley Martins Ferreira, Ricardo Luiz Utsch de Freitas Pinto, Philippe Mahey","doi":"10.1007/s11081-024-09895-3","DOIUrl":"https://doi.org/10.1007/s11081-024-09895-3","url":null,"abstract":"","PeriodicalId":56141,"journal":{"name":"Optimization and Engineering","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2024-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141347504","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Multi-objective topology optimization design of thermal-mechanical coupling structure based on FPTO method 基于 FPTO 方法的热机械耦合结构多目标拓扑优化设计
IF 2.1 3区 工程技术
Optimization and Engineering Pub Date : 2024-05-25 DOI: 10.1007/s11081-024-09890-8
Dengfeng Huang, Shunshun Zhou, Xiaolei Yan
{"title":"Multi-objective topology optimization design of thermal-mechanical coupling structure based on FPTO method","authors":"Dengfeng Huang, Shunshun Zhou, Xiaolei Yan","doi":"10.1007/s11081-024-09890-8","DOIUrl":"https://doi.org/10.1007/s11081-024-09890-8","url":null,"abstract":"<p>The coupling problem between the structural field and temperature field is widely encountered in engineering applications and holds significant research importance. In the context of thermo-mechanical coupling topology optimization, the thermal stress resulting from the temperature field can cause structural deformation, consequently impacting the structural performance. Therefore, it is crucial to conduct rational optimization designs to ensure favorable mechanical behavior and heat dissipation. This study utilizes thermo-mechanical coupling theory to perform multi-objective topology optimization, aiming to minimize compliance and heat dissipation weakness concurrently, thereby obtaining a more comprehensive design scheme with enhanced overall performance. Initially, a topological optimization model for the coupled thermo-mechanical problem is established. Subsequently, the objective functions of structural compliance and heat dissipation weakness are normalized, and their sensitivities are derived. Next, a multi-load case and multi-objective optimization algorithm based on Floating Projection Topological Optimization (FPTO) is proposed to minimize both structural compliance and heat dissipation weakness. By comparing the topological configuration and objective function values obtained using the Solid Isotropic Material with Penalization (SIMP) method, it is evident that the FPTO method achieves clear and smooth boundaries in the topological configuration, while yielding smaller objective function values. Additionally, under appropriate trade-off factors, the FPTO method achieves a more balanced topological structure and optimizes material distribution without increasing the structural volume, thus enabling lightweight structures, providing novel ideas and methods for engineering applications.</p>","PeriodicalId":56141,"journal":{"name":"Optimization and Engineering","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2024-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141149883","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Efficient bounds tightening based on SOCP relaxations for AC optimal power flow 基于 SOCP 松弛的交流优化功率流的高效边界收紧
IF 2.1 3区 工程技术
Optimization and Engineering Pub Date : 2024-05-25 DOI: 10.1007/s11081-024-09891-7
Yuanxun Shao, Dillard Robertson, Michael Bynum, Carl D. Laird, Anya Castillo, Joseph K. Scott
{"title":"Efficient bounds tightening based on SOCP relaxations for AC optimal power flow","authors":"Yuanxun Shao, Dillard Robertson, Michael Bynum, Carl D. Laird, Anya Castillo, Joseph K. Scott","doi":"10.1007/s11081-024-09891-7","DOIUrl":"https://doi.org/10.1007/s11081-024-09891-7","url":null,"abstract":"<p>A new bounds tightening algorithm for globally solving AC optimal power flow (ACOPF) problems is presented. Practical ACOPF instances are too large to be solved by conventional global optimization algorithms based on extensive search-space partitioning. However, tailored optimization-based bounds tightening (OBBT) algorithms using advanced relaxation techniques have been shown to achieve tight optimality gaps for many test cases with no partitioning at all. Unfortunately, OBBT is still costly because it requires solving two convex subproblems per decision variable in each iteration. We present a new OBBT algorithm, using a new SOCP based relaxation, that achieves tight optimality gaps while only solving subproblems for a small subset of variables. For PGLIB benchmarks up to 300 buses, the algorithm achieves the best gap on more test problems and is significantly faster on average than two existing OBBT algorithms chosen for comparison.</p>","PeriodicalId":56141,"journal":{"name":"Optimization and Engineering","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2024-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141149710","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Geometric design of electric motors using adjoint-based shape optimization 利用基于邻接的形状优化技术进行电机几何设计
IF 2.1 3区 工程技术
Optimization and Engineering Pub Date : 2024-05-22 DOI: 10.1007/s11081-024-09892-6
Luca Scotzniovsky, Ru Xiang, Zeyu Cheng, Gabriel Rodriguez, David Kamensky, Chris Mi, John T. Hwang
{"title":"Geometric design of electric motors using adjoint-based shape optimization","authors":"Luca Scotzniovsky, Ru Xiang, Zeyu Cheng, Gabriel Rodriguez, David Kamensky, Chris Mi, John T. Hwang","doi":"10.1007/s11081-024-09892-6","DOIUrl":"https://doi.org/10.1007/s11081-024-09892-6","url":null,"abstract":"","PeriodicalId":56141,"journal":{"name":"Optimization and Engineering","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2024-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141110077","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Trajectory optimization of unmanned aerial vehicles in the electromagnetic environment 电磁环境中无人驾驶飞行器的轨迹优化
IF 2.1 3区 工程技术
Optimization and Engineering Pub Date : 2024-05-17 DOI: 10.1007/s11081-024-09893-5
Anvarbek Atayev, Jörg Fliege, Alain B. Zemkoho
{"title":"Trajectory optimization of unmanned aerial vehicles in the electromagnetic environment","authors":"Anvarbek Atayev, Jörg Fliege, Alain B. Zemkoho","doi":"10.1007/s11081-024-09893-5","DOIUrl":"https://doi.org/10.1007/s11081-024-09893-5","url":null,"abstract":"","PeriodicalId":56141,"journal":{"name":"Optimization and Engineering","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2024-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140964495","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Iterative MILP algorithm to find alternate solutions in linear programming models 在线性规划模型中寻找替代解决方案的迭代 MILP 算法
IF 2.1 3区 工程技术
Optimization and Engineering Pub Date : 2024-04-26 DOI: 10.1007/s11081-024-09887-3
Dev A. Kakkad, Ignacio E. Grossmann, Bianca Springub, Christos Galanopoulos, Leonardo Salsano de Assis, Nga Tran, John M. Wassick
{"title":"Iterative MILP algorithm to find alternate solutions in linear programming models","authors":"Dev A. Kakkad, Ignacio E. Grossmann, Bianca Springub, Christos Galanopoulos, Leonardo Salsano de Assis, Nga Tran, John M. Wassick","doi":"10.1007/s11081-024-09887-3","DOIUrl":"https://doi.org/10.1007/s11081-024-09887-3","url":null,"abstract":"<p>We address in this paper linear programming (LP) models in which it is desired to find a finite set of alternate optima. An LP may have multiple alternate solutions with the same objective value or with increasing objective values. For many real life applications, it can be interesting to have a pool of solutions to compare what operations should be executed and what is the cost/benefit of doing it. To obtain a specified number of these alternate solutions in the increasing order of objective values, we propose an iterative MILP algorithm in which we successively add integer cuts on inactive constraints. We demonstrate the application and effectiveness of this algorithm on a 2 dimensional LP and on small and large supply chain problems. The proposed iterative MILP algorithm provides an effective approach for finding a specified number of alternate optima in LP models, which provides a useful tool in a variety of applications as for instance in supply chain optimization problems.</p>","PeriodicalId":56141,"journal":{"name":"Optimization and Engineering","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2024-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140802439","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Novel solution strategies for multiparametric nonlinear optimization problems with convex objective function and linear constraints 具有凸目标函数和线性约束条件的多参数非线性优化问题的新型求解策略
IF 2.1 3区 工程技术
Optimization and Engineering Pub Date : 2024-04-22 DOI: 10.1007/s11081-024-09888-2
Diogo A. C. Narciso, E. Pistikopoulos
{"title":"Novel solution strategies for multiparametric nonlinear optimization problems with convex objective function and linear constraints","authors":"Diogo A. C. Narciso, E. Pistikopoulos","doi":"10.1007/s11081-024-09888-2","DOIUrl":"https://doi.org/10.1007/s11081-024-09888-2","url":null,"abstract":"","PeriodicalId":56141,"journal":{"name":"Optimization and Engineering","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2024-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140674031","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Topology optimization of two-dimensional magnetorheological elastomer phononic crystal plate with tunable bandgap considering a specified target frequency 带隙可调的二维磁流变弹性体声波晶体板的拓扑优化（考虑指定目标频率
IF 2.1 3区 工程技术
Optimization and Engineering Pub Date : 2024-04-22 DOI: 10.1007/s11081-024-09889-1
Yuhuai Wang, Jian Xing, Zhizheng Chen, Xiaojing Zhu, Jianfang Huang
{"title":"Topology optimization of two-dimensional magnetorheological elastomer phononic crystal plate with tunable bandgap considering a specified target frequency","authors":"Yuhuai Wang, Jian Xing, Zhizheng Chen, Xiaojing Zhu, Jianfang Huang","doi":"10.1007/s11081-024-09889-1","DOIUrl":"https://doi.org/10.1007/s11081-024-09889-1","url":null,"abstract":"","PeriodicalId":56141,"journal":{"name":"Optimization and Engineering","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2024-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140674799","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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