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依托三阶段啤酒游戏的“供应链管理”一体化课程设计

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航海教育研究 2024年第1期41卷 74-79页

作者：刘进平杨华龙吴泽锐肖俊大连海事大学交通运输工程学院辽宁大连116026 深圳市中诺思科技股份有限公司广东深圳518000

啤酒游戏是“供应链管理”课程教学过程中一项普遍应用的实验教学内容。在传统手动啤酒游戏的基础上,增加深圳中诺思与大连海事大学联合开发的数智啤酒游戏在线实验,引导学生自主设计基于Excel的多个供应链决策仿真实验,体现基于系统思... 详细信息

啤酒游戏是“供应链管理”课程教学过程中一项普遍应用的实验教学内容。在传统手动啤酒游戏的基础上,增加深圳中诺思与大连海事大学联合开发的数智啤酒游戏在线实验,引导学生自主设计基于Excel的多个供应链决策仿真实验,体现基于系统思考的供应链管理相关教学内容,构建以行动学习和以学生为中心的依托三阶段啤酒游戏的一体化教学框架,增强学生的自主研究能力、创新能力和批判性思维。

关键词：啤酒游戏供应链管理一体化课程设计实验教学Excel仿真

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提高预焙阳极焙烧外观合格率的研究及实践

云南冶金 2024年第3期53卷 140-145页

作者：熊云峰张紫光董文仁杨华龙云南源鑫炭素有限公司云南昆明650502

针对预焙阳极在焙烧过程中影响外观质量的问题,结合装炉技术操作和设备现状对影响合格率的原因进行了分析,提出了改进的相应措施。经过生产实践,预焙阳极不合格块占总炭块的百分比由0.58%下降至0.44%。

关键词：预焙阳极掉棱掉角合格率

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高压同步电动机转子故障分析与预防

防爆电机 2024年第1期59卷 76-78页

作者：刘凤祥陈晓辉吴化龙杨垒中石油云南石化有限公司公用工程部云南昆明650300

以一起大型石化企业高压同步电动机转子故障为例,通过对继电保护动作信息、试验结果以及设备受损情况进行判断,逐层排查故障区间,定位故障点,深入分析故障产生的原因及故障机理,提出了优化、预防措施。供同类企业的高压同步电动机具有... 详细信息

以一起大型石化企业高压同步电动机转子故障为例,通过对继电保护动作信息、试验结果以及设备受损情况进行判断,逐层排查故障区间,定位故障点,深入分析故障产生的原因及故障机理,提出了优化、预防措施。供同类企业的高压同步电动机具有良好的借鉴意义。

关键词：同步电动机转子故障预防

Design and Optimization of Bionic Janus Blade in Hydraulic Torque Converter for Drag Reduction

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Journal of Bionic Engineering 2018年第1期15卷 160-172页

作者： Chunbao Liu Chuang Sheng hualong yang Zhe Yuan School of Mechanical Science and Engineering Jilin University Changchun 130022 China Key Laboratory of Bionic Engineering Ministry of Education Jilin University Changchun 130022 China State Key Laboratory of Automotive Simulation and Control Jilin University Changchun 130022 China

The chief aim of the present work was to achieve drag reduction in stator blades with liquid using boundary layer control. A stator blade of hydraulic torque converter with bionic grooves in suction side and hydrophobic surface in pressure side was designed. The hydrophobic surface was created using anodic oxidation method and irregular A1203 thin films were found on the surface. They formed hierarchical structure consisting of mini porous structures and microscopic pore spaces, resulting in the hydrophobicity. The bionic groove was designed by Computational Fluids Dynamics （CFD） method. Multi-Island Genetic Algorithm （MIGA） was adopted for groove multi-objective optimization. Through optimization, the maximum drag reduction was close to 12% in oil. In addition, the drag reduction calculation was verified by closed channel experiment and ＂Tire Vortex＂ was proposed to explain the drag reduction mechanism. The bionic Janus blade could maintain its initial profile without any additional device, which had lower risk and less cost. The results are encouraging and show great potential to apply in other flow machineries.

关键词： hydraulic torque converter bionic blade boundary layer control drag reduction

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双动力高速动车组动力包框架仿真及试验研究

机车电传动 2024年第1期 46-57页

作者：宋清林林建华李文勇类延磊杨化龙朱丹中车大连机车研究所有限公司研发中心辽宁大连116021

文章介绍了双动力高速动车组动力包的结构特点,利用HyperMesh软件建立动力包框架有限元模型;根据EN 12663-1标准确定动力包框架的静强度和疲劳强度工况;根据Von Mises应力评估动力包框架结构的静强度;根据DVS 1612标准评估动力包框架的... 详细信息

文章介绍了双动力高速动车组动力包的结构特点,利用HyperMesh软件建立动力包框架有限元模型;根据EN 12663-1标准确定动力包框架的静强度和疲劳强度工况;根据Von Mises应力评估动力包框架结构的静强度;根据DVS 1612标准评估动力包框架的焊接疲劳强度。利用ANSYS软件,对动力包框架进行自由模态分析;根据双层隔振理论建立动力包动力学模型;根据ISO 10816-6标准,计算动力包的振动烈度;根据ISO 8528-9标准,对动力包框架进行振动试验。通过对动力包框架的仿真分析和振动试验,结果表明,动力包框架能够满足相关标准设计要求。

关键词：高速动车组动力包静强度疲劳强度模态分析隔振效率振动烈度

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Joint slot allocation and dynamic pricing of container sea-rail multimodal transportation

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Journal of Traffic and Transportation Engineering(English Edition) 2015年第3期2卷 198-208页

作者： Di Liu hualong yang College of Transportation Management Dalian Maritime University College of Traffic and Transportation Engineering Dalian Jiaotong University

The container sea-rail multimodal transport system faces complex challenges with de- mand uncertainties for joint slot allocation and dynamic pricing. The challenge is formulated as a two-stage optimal model based on revenue management （RM） as actual slots sale of multi-node container sea-rail multimodal transport usually includes contract sale to large shippers and free sale to scattered shippers. First stage in the model utilizes an origin-destination control approach, formulated as a stochastic integer programming equation, to settle long-term slot allocation in the contract market and empty container allocation. Second stage in the model is formulated as a stochastic nonlinear programming equation to solve a multiproduct joint dynamic pricing and inventory control problem for price settling and slot allocation in each period of free market. Considering the random nature of demand, the methods of chance constrained programming and robust optimi- zation are utilized to transform stochastic models into deterministic models. A numerical experiment is presented to verify the availability of models and solving methods. Results of considering uncertain/certain demand are compared, which show that the two-stage optimal strategy integrating slot allocation with dynamic pricing considering random de- mand is revealed to increase the revenue for multimodal transport operators （MTO） while concurrently satisfying shippers＇ demand. Research resulting from this paper will contribute to the theory and practice of container sea-rail multimodal transport revenue management and provide a scientific decision-making tool for MTO.

关键词： Container transportation Sea-rail multimodal transport Dynamic pricing Slot allocation Revenue management

Production of the C/TiO_(2)composite with a high-performance electrochemical property from titanium-rich sludge via in-situ C coating

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Journal of Environmental Sciences 2024年第3期137卷 131-143页

作者： hualong Wu Yanxia Zhao Jiexi Wang Xiaoyan Li Kaimin Shih Xuguang Li Wei Liu School of Water Conservancy and Environment University of JinanJinan 250022China State Key Lab of Physical Chemistry of Solid Surface Collaborative Innovation Center of Chemistry for Energy MaterialsCollege of MaterialsXiamen UniversityXiamen 361005China School of Metallurgy and Environment Central South UniversityChangsha 410083China Department of Civil Engineering The University of Hong KongPokfulamHong KongChina Institute of Environment and Ecology Tsinghua Shenzhen International Graduate SchoolTsinghua UniversityShenzhen 518055China

Resource recycling from waste-water and sludge is an important part of the 14th Five-Year Plan in *** emerging titanium-based coagulants have drawn growing attentions due to their strong coagulation capability in water purification and value-added Ti-loaded sludge *** and recovery of the high value-added sludge into functional nanomaterials is highly significant for both sludge reduction and environmental *** present study was carried out to investigate the recycle of the coagulated Ti-loaded sludge to produce functional C/TiO_(2)composites as the anode materials for lithium-ion batteries(LIBs).It is the first time that the application of the Ti-loaded wastewater sludge derived C/TiO_(2)was evaluated for *** experimental results showed that the carbon coating through in-situ carbonization of the sludge produced the C/TiO_(2)composites with a high specific surface area,stable structural integrity,and excellent electrochemical properties that would facilitate Li+diffusion in long-term LIBs *** C/TiO_(2)composites calcinated from the polytitanium sulfate-coagulated sludge at 800℃(N_(2))exhibited the best electrochemical performance during the cycling tests(601 m Ah/g at 100 m A/g after 200 cycles).The research work demonstrates the promising prospect of the recycle and value-added utilization of the Ti-loaded sludge in the production of high-performance C/TiO_(2)composites for energy storage *** study provides a new way for the management and reuse of Ti-loaded waste-sludge.

关键词： Sludge recovery Ti-loaded sludge In-situ coating Lithium-ion battery

基于合作协议的集装箱班轮运输船期设计和加油策略联合优化

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上海交通大学学报 2022年第7期56卷 953-964页

作者：李德昌杨华龙段静茹大连海事大学交通运输工程学院辽宁大连116026

针对码头运营商与船公司间签署船舶到港多时间窗、多起讫时刻和多装卸速率合作协议下的集装箱班轮运输船期设计和加油策略联合优化问题,考虑各加油港燃油价格差异和折扣因素,建立了以班轮运输服务总成本最小化为目标的船期设计和加油策... 详细信息

针对码头运营商与船公司间签署船舶到港多时间窗、多起讫时刻和多装卸速率合作协议下的集装箱班轮运输船期设计和加油策略联合优化问题,考虑各加油港燃油价格差异和折扣因素,建立了以班轮运输服务总成本最小化为目标的船期设计和加油策略非线性混合整数规划模型,结合船舶驾驶操控实际,设计了离散化和线性化模型求解技术方法.以中国远洋海运集团有限公司AEX1航线为例进行了大量模拟验证.算例结果显示,船期设计和加油策略联合优化有助于船公司灵活地调整船舶航速,可显著降低班轮运输服务总成本.敏感性分析表明,随着合作协议中船舶到港时间窗长度的扩大,班轮运输服务总成本和船舶航次加油量都随之降低;无论燃油价格如何变化,船期设计和加油策略联合优化都能有效降低班轮运输服务总成本.

关键词：班轮运输合作协议船期设计加油策略联合优化

考虑航线网络重叠航段的双寡头竞争市场集装箱班轮运输动态定价模型

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管理工程学报 2022年第5期36卷 205-214页

作者：宋巍杨华龙郑建风大连海事大学交通运输工程学院辽宁大连116026

本文针对包含航线网络重叠航段的双寡头竞争市场集装箱班轮运输动态定价问题,分析了即期市场客户运价敏感度与运输需求关系,探讨了在航线网络重叠航段上运价变化对货流量分配的影响,据此结合市场竞争强度因素和竞争对手的定价策略,建立... 详细信息

本文针对包含航线网络重叠航段的双寡头竞争市场集装箱班轮运输动态定价问题,分析了即期市场客户运价敏感度与运输需求关系,探讨了在航线网络重叠航段上运价变化对货流量分配的影响,据此结合市场竞争强度因素和竞争对手的定价策略,建立了双寡头竞争市场集装箱班轮运输分时段动态定价模型,运用库恩-塔克条件,设计了模型的求解算法。算例结果显示,采取本文的动态定价策略将会使得两家双寡头船公司的收益都显著增加。研究表明:船公司之间通过组建班轮联盟加强合作,不仅可以避免价格战,而且能够减缓市场竞争强度对运价的负面影响;船公司可以根据客户运价敏感度因素对即期市场客户进行合理地分类,从而降低客户运价敏感度对集装箱运输需求的不利影响,以提高集装箱班轮运输收益。

关键词：集装箱班轮运输动态定价双寡头竞争即期市场航线网络重叠航段库恩-塔克条件