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Analysis of inventory level under procurement constraints in supply chain

CHANG Guangshu

Frontiers of Mechanical Engineering 2007, Volume 2, Issue 3,   Pages 361-363 doi: 10.1007/s11465-007-0063-1

Abstract: Then, the change of the inventory level with and without the procurement constraints is analyzed, and

Keywords： supply     efficient reduction     system     expectation     procurement    

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models to explore the solution space of large nonlinear systems underlying flowsheet simulations with constraints

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 2,   Pages 183-197 doi: 10.1007/s11705-021-2073-7

Abstract: Additional constraints from technical, economic, environmental, and safety considerations may furtherA priori, the design variable domains for which a simulation converges and fulfills the imposed constraintsHowever, that approach only considers the exploration of the convergent domain and ignores additional constraintsIn this paper, we present an improvement which particularly takes the fulfillment of constraints into

Keywords： machine learning     flowsheet simulations     constraints     exploration    

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Resilience strategies for sustainable supply chains under budget constraints in the post COVID-19 era

Frontiers of Engineering Management   Pages 143-157 doi: 10.1007/s42524-022-0236-y

Abstract: Therefore, the design of resilience solutions needs to fully consider the constraints of budgetary costsMost of the existing related literature only discusses optimal resilience solutions under certain cost constraintssatisfaction as indicators, to determine the changing laws of optimal resilience strategies when cost constraints

Keywords： sustainable supply chain     customer requirement     resilience efficiency     customer satisfaction     budget constraint    

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emission reduction targets with minimum abatement costs: An enterprise-level allocation method with constraints

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 2, doi: 10.1007/s11783-021-1459-6

Abstract:

• Quantification of efficiency and fairness of abatement allocation are optimized.

Keywords： Pollutant emission reduction allocation     Emission reduction measures     Total abatement cost     Economic efficiency     Abatement space    

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Operation and control of flow manufacturing based on constraints management for high-mix/low-volume production

GUAN Zailin, PENG Yunfang, MA Li, ZHANG Chaoyong, LI Peigen

Frontiers of Mechanical Engineering 2008, Volume 3, Issue 4,   Pages 454-461 doi: 10.1007/s11465-008-0083-5

Abstract: The application of different theories of constraints/drum-buffer-rope (TOC/DBR) control policies depends

Keywords： appropriate     management technology     scheduling     technology     different    

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Two-stage stochastic programming with robust constraints for the logistics network post-disruption response

Frontiers of Engineering Management   Pages 67-81 doi: 10.1007/s42524-022-0240-2

Abstract: problem, this study proposes a novel two-stage stochastic programming model with robust delivery time constraintsthe conditional value at risk (CVaR) criterion is utilized to reduce the operational risk, and robust constraintsfurther derived by linearizing the CVaR objective function and dualizing the infinite number of robust constraints

Keywords： logistics network design     post-disruption response strategy     two-stage stochastic programming     conditional value at risk     robust constraint    

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Trajectory optimization with constraints for alpine skiers based on multi-phase nonlinear optimal control

Cong-ying Cai, Xiao-lan Yao,yaoxiaolan@bit.edu.cn

Frontiers of Information Technology & Electronic Engineering 2020, Volume 21, Issue 10,   Pages 1413-1534 doi: 10.1631/FITEE.1900586

Abstract: carried out by the MATLAB optimization toolbox, the is obtained under several equality and inequality constraints
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Multimodal processes optimization subject to fuzzy operation time constraints: declarative modeling approach

Izabela NIELSEN,Robert WÓJCIK,Grzegorz BOCEWICZ,Zbigniew BANASZAK

Frontiers of Information Technology & Electronic Engineering 2016, Volume 17, Issue 4,   Pages 338-347 doi: 10.1631/FITEE.1500359

Abstract: treated in terms of optimization of the AGVs fleet scheduling problem subject to fuzzy operation time constraints

Keywords： Automated guided vehicles (AGVs)     Scheduling     Multimodal process     Fuzzy constraints     Optimization    

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Evaluation of a novel Asymmetric Genetic Algorithm to optimize the structural design of 3D regular and irregular steel frames

Mohammad Sadegh ES-HAGHI, Aydin SHISHEGARAN, Timon RABCZUK

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 5,   Pages 1110-1130 doi: 10.1007/s11709-020-0643-2

Abstract: We propose a new algorithm, named Asymmetric Genetic Algorithm (AGA), for solving optimization problems of steel frames. The AGA consists of a developed penalty function, which helps to find the best generation of the population. The objective function is to minimize the weight of the whole steel structure under the constraint of ultimate loads defined for structural steel buildings by the American Institute of Steel Construction (AISC). Design variables are the cross-sectional areas of elements (beams and columns) that are selected from the sets of side-flange shape steel sections provided by the AISC. The finite element method (FEM) is utilized for analyzing the behavior of steel frames. A 15-storey three-bay steel planar frame is optimized by AGA in this study, which was previously optimized by algorithms such as Particle Swarm Optimization (PSO), Particle Swarm Optimizer with Passive Congregation (PSOPC), Particle Swarm Ant Colony Optimization (HPSACO), Imperialist Competitive Algorithm (ICA), and Charged System Search (CSS). The results of AGA such as total weight of the structure and number of analyses are compared with the results of these algorithms. AGA performs better in comparison to these algorithms with respect to total weight and number of analyses. In addition, five numerical examples are optimized by AGA, Genetic Algorithm (GA), and optimization modules of SAP2000, and the results of them are compared. The results show that AGA can decrease the time of analyses, the number of analyses, and the total weight of the structure. AGA decreases the total weight of regular and irregular steel frame about 11.1% and 26.4% in comparing with the optimized results of SAP2000, respectively.

Keywords： optimization     steel frame     Asymmetric Genetic Algorithm     constraints of ultimate load     constraints of serviceability    

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Spatiotemporal distance embedded hybrid ant colony algorithm for a kind of vehicle routing problem with constraints Research Article

Zhenhui FENG, Renbin XIAO,feng_zh@hust.edu.cn,rbxiao@hust.edu.cn

Frontiers of Information Technology & Electronic Engineering 2023, Volume 24, Issue 7,   Pages 1062-1079 doi: 10.1631/FITEE.2200585

Abstract: It is a typical extended vehicle routing problem (VRP) with both time and space constraints.

Keywords： Vehicle routing problem with constraints (VRPC)     Spatiotemporal distance function     Labor division strategy    

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Long-term simulation of growth stage-based irrigation scheduling in maize under various water constraints

Quanxiao FANG, Liwang MA, Lajpat Rai AHUJA, Thomas James TROUT, Robert Wayne MALONE, Huihui ZHANG, Dongwei GUI, Qiang YU

Frontiers of Agricultural Science and Engineering 2017, Volume 4, Issue 2,   Pages 172-184 doi: 10.15302/J-FASE-2017139

Abstract: Due to varying crop responses to water stress at different growth stages, scheduling irrigation is a challenge for farmers, especially when water availability varies on a monthly, seasonal and yearly basis. The objective of this study was to optimize irrigation between the vegetative (V) and reproductive (R) phases of maize under different available water levels in Colorado. Long-term (1992–2013) scenarios simulated with the calibrated Root Zone Water Quality Model were designed to meet 40%–100% of crop evapotranspiration (ET) requirements at V and R phases, subject to seasonal water availabilities (300, 400, 500 mm, and no water limit), with and without monthly limits (total of 112 scenarios). The most suitable irrigation between V and R phases of maize was identified as 60/100, 80/100, and 100/100 of crop ET requirement for the 300, 400, 500 mm water available, respectively, based on the simulations from 1992 to 2013. When a monthly water limit was imposed, the corresponding suitable irrigation targets between V and R stages were 60/100, 100/100, and 100/100 of crop ET requirement for the above three seasonal water availabilities, respectively. Irrigation targets for producing higher crop yield with reduced risk of poor yield were discussed for projected five-year water availabilities.

Keywords： RZWQM     ET-based irrigation schedule     maize     water constrains    

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Planning projects with scarce resources: Yesterday, today and tomorrow’s research challenges

Mario VANHOUCKE

Frontiers of Engineering Management 2018, Volume 5, Issue 2,   Pages 133-149 doi: 10.15302/J-FEM-2018088

Abstract: This paper is an invited request to describe the main research challenges in the domain of resource-constrained project scheduling. The paper is split up in three parts. In today’s challenges, research endeavors that have received a significant, but still not enough, attention have been described. In tomorrow’s research challenges, some promising research avenues for future research have been given. Finally, in yesterday’s challenge, a research topic that started decades ago, is said to have still a huge potential in tomorrow’s research agenda. This paper does not intend to give a full literature overview, nor a summary of all possible research paths. Instead, it is inspired from the author’s experience in academic research and practical consultancy and it serves as a personal opinion on a non-exhaustive set of promising research avenues, rather than giving a full literature-based advice for future research directions.

Keywords： project management     project scheduling     resource constraints     PERT/CPM     RCPSP    

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Constraints for Sustainable Land Use in China and Countermeasures

Li Boheng

Strategic Study of CAE 2003, Volume 5, Issue 9,   Pages 7-12

Abstract:

Large population, limited land resources and environmental pollution are the main constraints for

Keywords： land use     sustainable development     countermeasures    

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Distributed optimization based on improved push-sum framework for optimization problem with multiple local constraints

徐谦,俞楚天,袁翔,韦梦立,刘洪喆

Frontiers of Information Technology & Electronic Engineering 2023, Volume 24, Issue 9,   Pages 1253-1260 doi: 10.1631/FITEE.2200596

Abstract: In this paper, the optimization problem subject to ,N, nonidentical closed convex set constraints is

Keywords： Distributed optimization     Nonidentical constraints     Improved push-sum framework    

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SUSTAINABLE AGRICULTURE IN CHINA: THE HISTORY OF STATE POLICY GOALS, REFORM OPPORTUNITIES AND INSTITUTIONAL CONSTRAINTS

Frontiers of Agricultural Science and Engineering 2023, Volume 10, Issue 4,   Pages 518-529 doi: 10.15302/J-FASE-2023525

Abstract:

This paper examines the historical evolution of crop-livestock integration in China with a specific focus on its role in mitigating non-point source pollution. Extensive examination of existing literature has unearthed the roots of crop-livestock integration dating back to the Western Zhou Dynasty (1046 to 771 BCE), ultimately culminating in a multifaceted and intricately interwoven system of rural development policies seen in contemporary China. This paper identifies and characterizes four distinct stages in the historical trajectory of crop-livestock integration: the era of self-sufficient subsistence production in traditional times (1046 BCE to 1948); the period where crop-livestock integration emerged as a pivotal strategy for augmenting grain and meat production under collectivist policies (1949‒1977); the phase marked by the industrialization and expansion of the livestock sector during the early years of economic reforms (1978‒2011); and the present era in which crop-livestock integration is harnessed as a mechanism for pollution control and ecological preservation in contemporary China (2012 to present). This paper illuminates the diverse contributions of crop-livestock integration in different epochs of rural development within China, which contributes to a nuanced and more theoretically grounded comprehension of circular agriculture. This understanding has the potential to be leveraged to promote sustainable rural development in broader contexts.

Keywords： crop-livestock integration     non-point source pollution control     nutrient cycling     policy intervention     sustainable development    

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Title Author Date Type Operation

Analysis of inventory level under procurement constraints in supply chain

CHANG Guangshu

Journal Article

models to explore the solution space of large nonlinear systems underlying flowsheet simulations with constraints

Journal Article

Resilience strategies for sustainable supply chains under budget constraints in the post COVID-19 era

Journal Article

emission reduction targets with minimum abatement costs: An enterprise-level allocation method with constraints

Journal Article

Operation and control of flow manufacturing based on constraints management for high-mix/low-volume production

GUAN Zailin, PENG Yunfang, MA Li, ZHANG Chaoyong, LI Peigen

Journal Article

Two-stage stochastic programming with robust constraints for the logistics network post-disruption response

Journal Article

Trajectory optimization with constraints for alpine skiers based on multi-phase nonlinear optimal control

Cong-ying Cai, Xiao-lan Yao,yaoxiaolan@bit.edu.cn

Journal Article

Multimodal processes optimization subject to fuzzy operation time constraints: declarative modeling approach

Izabela NIELSEN,Robert WÓJCIK,Grzegorz BOCEWICZ,Zbigniew BANASZAK

Journal Article

Evaluation of a novel Asymmetric Genetic Algorithm to optimize the structural design of 3D regular and irregular steel frames

Mohammad Sadegh ES-HAGHI, Aydin SHISHEGARAN, Timon RABCZUK

Journal Article

Spatiotemporal distance embedded hybrid ant colony algorithm for a kind of vehicle routing problem with constraints

Zhenhui FENG, Renbin XIAO,feng_zh@hust.edu.cn,rbxiao@hust.edu.cn

Journal Article

Long-term simulation of growth stage-based irrigation scheduling in maize under various water constraints

Quanxiao FANG, Liwang MA, Lajpat Rai AHUJA, Thomas James TROUT, Robert Wayne MALONE, Huihui ZHANG, Dongwei GUI, Qiang YU

Journal Article

Planning projects with scarce resources: Yesterday, today and tomorrow’s research challenges

Mario VANHOUCKE

Journal Article

Constraints for Sustainable Land Use in China and Countermeasures

Li Boheng

Journal Article

Distributed optimization based on improved push-sum framework for optimization problem with multiple local constraints

徐谦,俞楚天,袁翔,韦梦立,刘洪喆

Journal Article

SUSTAINABLE AGRICULTURE IN CHINA: THE HISTORY OF STATE POLICY GOALS, REFORM OPPORTUNITIES AND INSTITUTIONAL CONSTRAINTS

Journal Article