Integrated ports clusters and competitive advantage in an extended resource pool for the Antwerp Seaport

In the context of increased scale of carriers and vessel sizes, stakeholder opposition to port expansion, and heavy regulation, ports prepare their strategic response. A port’s competitive strength strongly depends on its capability of developing or retaining competitive advantages. Ports consider options such as strategic partnerships, or any form of collaboration, which could help them to create more or alternative combinations of unique resources as sources of competitive advantage. Taking an extended resource base perspective, the competitive advantages of the Antwerp port cluster are analyzed, using both linear regression and factor analysis, for its integrated hinterland network area, on data of 59 port experts. The results of our analysis show that the port’s hinterland extension did not (yet) result in new sources of competitive advantages. This leads us to the reflection that we cannot assume integrated port clusters always lead to projected positive strategic outcomes.     

武汉智能网联汽车配套基础设施及车路协同建设研究

新时代科技革命与产业升级进行得如火如荼,智能网联汽车作为一个新兴产业正快速进入产业化与市场部署阶段,成为汽车行业技术变革的重要突破口。武汉作为国内第一批发展车路协同与智慧城市的“双智”试点城市之一,正在大力促进智能网联车及配套技术的发展和应用。依托武汉光谷区域交通基础设施的工程实例,构建光谷完整的“车路智行的生态系统”,着重研究车路智行一体化的智能网联体系,归纳总结智能网联汽车示范段的建设,为推动自动驾驶、V2X等技术的研发应用进程奠定坚实基础,不断完善光谷智能网联汽车产业链,促进智能网联汽车产业发展。     

车地协同下的联锁子系统HCPN建模与验证

联锁子系统作为站内行车安全的关键保障,是车地协同下的列车运行控制系统的重要组成部分。传统联锁子系统存在地面集中控制失效风险大、列车自主化程度低等不足,为顺应精简系统结构、降低运营成本和提升列车自主化的列控技术发展趋势,设计一种车地协同下的联锁子系统用于城际铁路。考虑多车间的进路冲突是影响子系统功能实现的关键因素,提出进路预延伸策略以避免列车间的进路冲突。为确保联锁子系统功能安全,采用一种基于层次着色Petri网(HCPN)的系统功能建模与验证方法。通过对联锁子系统的主要功能实现过程—进路建立过程进行分析,提取子系统的功能需求,以此建立顶层需求模型。为缩小底层实现与顶层需求之间的差距,建立基于数据及行为低抽象度表达的模块层模型,并在其中引入死锁控制策略实现对系统功能逻辑的完整表达。以冲突进路建立场景为模型的输入参数,执行验证过程,通过对模型标准状态空间性能分析,实现对模型正确性的检验。在此基础上,采用分支时序逻辑ASK-CTL公式与状态空间搜索算法相结合的验证方法,完成对子系统功能安全性的检验。研究结果表明：模型的行为特性同子系统预期相一致,能够正确表达系统的行为。所设计子系统满足功能安...     

基于改进遗传算法的舾装件托盘多载具协同拣选方法

为提升舾装件托盘的拣选效率,建立拣选过程的数学模型,提出一种基于改进遗传算法（Improved Genetic Algorithm,IGA）的舾装件托盘多载具协同拣选方法。针对遗传算法（Genetic Algorithm,GA）流程与实际拣选过程的差异,改进GA的初始化过程和染色体交叉方式,并对变异过程进行更贴近实际生产的修改。针对GA难以得到全局最优解的问题,采用变邻域搜索（Variable Neighborhood Search,VNS）策略降低陷入局部最优解的可能性。采用实例计算验证该算法的有效性,可优化传统舾装件托盘拣选方法。     

网约车安全预警机制探析

针对我国网鈞车平台在安全预警机制方面存在的漏洞以及网约车安全预警机制建立的必要性,提出建立网约车安全预警机制;基于交通运输部介入安全预警机制的目标,实现警企联合,建立快速预警和防范播报机制,提出网约车安全预警机制的全面规划管理,做到合理维护乘客、驾驶人、平台三方的权益,保障公民的人身财产妥全,将危险损害程度最小化以求避免危险事故的发生,同时助力网约车行业健康发展。     

海铁集装箱多式联运信息服务平台架构研究

分析了我国多式联运信息服务平台的建设现状和问题根源,基于物联网架构提出了与我国多式联运信息服务现状相适应的平台体系框架和平台布局方法,阐述了各支撑系统的设计思路和建设方案,提出了信息服务平台发展协作方案,以保证平台的持续稳定建设。     

Enhancing intelligent agent collaboration for flow optimization of railroad traffic

Intelligent agents have successfully solved the train pathing problem on a small portion of railroad network [Tsen, 1995, Ph.D. Thesis, Carnegie Mellon University, USA]. As the railroad network grows, it is imperative that the agents collaborate to operate as efficiently as possible. In this paper, the authors demonstrate a collaboration protocol based on a conditional measure of agent effectiveness. Because agent effectiveness is not directly measurable, a suitable metric for agent effectiveness is introduced. Where typically agents run with uniform frequency, the collaboration protocol schedules the agents with a frequency proportional to their expected effectiveness. This protocol introduced a 10-fold improvement in the agent efficiency when tested with a simulation program on a portion of the Burlington Northern railroad.     

基于Portal船舶异地协同设计系统集成框架研究

根据我国船舶设计现状,针对船舶异地协同设计系统的集成框架问题进行了研究. 采用目前先进的Ponal门户技术,构建了船舶异地协同设计系统的集成框架,并针对其中关键的单点登录问题进行讨论,给出了一种设计方法,该框架目前已成功运用于实际的船舶异地协同设计应用系统中．     

基于Bentley平台的BIM技术在河道设计中的应用

随着计算机与三维技术的迅速发展,水利工程的设计已经不仅局限于解决二维、单领域的技术问题,而是逐渐发展为三维、多专业集合的整体设计模式。现以Bentley系列软件为平台,通过创建模型、碰撞检测、工程量计算、实景效果等技术手段,提出一套适用于河道整治工程的三维设计方法。     

The Importance of Brokers in Collaborative Marine Ecosystem-Based Management of Social Ecological Systems

Abstract

Practitioners play a critical yet largely unexamined role in translating collaborative, ecosystem-based management (EBM) for social-ecological systems from theory to practice. We paired mental models and social network analytical methods and applied them to two cases of marine EBM in Rhode Island and New York, focusing on practitioners themselves, to understand the relationship between practitioners’ mental models of marine ecosystems and the extent and nature of collaboration within each network. Mental models analysis was used to assess the comprehensiveness and balance of practitioners’ mental models, and social network analysis was used to assess the role and influence of practitioners within each network. A comparative statistical analysis was then performed to understand the relationship between mental models and network measures. Research revealed a statistically significant correlation between practitioners’ mental model comprehensiveness and practitioners’ influence within the network. In other words, practitioners with comprehensive mental models of the ecosystem for which they were planning were found to act as “brokers,” connecting those who were not otherwise connected, bridging jurisdictions, sectors, and disciplines. Results underscore the importance of brokers in achieving the collaborative and integrated goals of EBM and suggest the need for greater attention to practitioners’ role in EBM implementation.