CSP辊底式加热炉的弧形摆渡控制

通过对CPS辊底式加热炉弧形摆渡控制系统的摆渡过程、摆渡条件判断、PLC间数据交换、摆渡点计算的分析,从软件和控制方式上详细介绍了弧形摆渡控制系统设计思想,对今后的运行维护起到理论性指导作用。     

Electric ferry ecosystem for sustainable inter-island transport in the Philippines: a prospective simulation for Davao City – Samal Island Route

The development of a prospective simulation will serve as a guide in converting a diesel engine into 100% electric engine, this conversion will solve the problems facing nowadays in an energy crisis and greenhouse gas emission. The simulation derives the estimated power engine, the battery pack to be installed and the photovoltaic wattage for charging while transporting passengers and goods from Davao City to Samal Island Philippines. The results give an estimated power engine of 24.07?kW, 7.1?kA- hour battery bank and 64?kW of the photovoltaic module to charge the battery while on voyage. This study further helps the boat owner to find the suitable engine requirement in converting into the electric ferry. The prospective simulation is the stepping-stone in moving towards green energy source and electric mobilisation in the maritime sector.     

物理隔离的网间“摆渡”技术应用研究

主要介绍物理隔离网络,即为了防止内部核心网络和核心数据免受外部的攻击。随着网络攻击手段的不断发展和多样化,现如今的物理隔离技术也在做相应的改变和进步,但还是不能完全保证内网信息的安全。基于物理隔离技术的物理隔离网闸实现外部网与内部网之间数据和信息传递,在现网闸“摆渡”技术的基础上,通过对“摆渡”策略的进一步研究和发展,来提高网络防护的性能,以实现对内部网络中数据和信息的保护。     

Ad Hoc网络在未知环境探测中的应用

无线Ad Hoc网络是一种无基础设施、无中心控制的分布式自组织网络。为了实现对未知环境的探测并获取相关数据,针对Ad Hoc网络提出一种基于链式编队、替补节点和摆渡传输的多策略数据传输方案(MSDTS)。采用NS2网络仿真工具对该方案进行仿真,结果表明MSDTS在链式Ad Hoc网络搭建、数据丢包率、网络平均吞吐量方面均有良好性能。     

基于转发倾向度的固定路径摆渡路由算法

为了降低容迟网络（DTN）中摆渡路由算法对摆渡路径的依赖,提出了一种基于转发倾向度的固定路径摆渡路由算法（FTFPF）.区别于当前算法主要关注如何为摆渡节点设计合理的摆渡路径,该算法使得摆渡节点可在较为随意的摆渡路径上运动,而DTN依然可取得很好的性能.根据DTN上层应用的不同需求（时延敏感或报文丢失敏感）,FTFPF算法可通过调节算法参数来满足不同的应用需求.仿真结果表明,FTFPF算法在报文递交率、平均时延和报文在缓存逗留时间等方面性能均优于基于最优摆渡路径路由算法（OPWP）.     

移动存储设备病毒防范分析

针对当前严重威胁网络环境、利用移动存储介质进行木马传播的摆渡木马,通过对摆渡木马启动、隐藏、运行方式的深入剖析,研究了该类木马的传统防御技术,包括禁止或关闭自动播放、修改权限、自动运行免疫、移动存储设备管控、敏感文件彻底删除等策略.从病毒防范能力角度考虑,利用文件标签进行病毒木马防御是比较有效的.     

“红色旧址”保护规划探讨--以江西省于都县中央红军长征出发地旧址为例

通过在设计实践中对城镇化快速发展与“红色旧址”保护等矛盾的处理来探讨“红色旧址”的保护规划问题。该文对长征第一渡口旧址从本体评估、自然环境评估、建筑环境评估、基础设施评估等方面进行了现状分析与评估,划定保护范围与建设控制地带,提出具体的用地调整规划、整治规划,并以该实例对当前“红色旧址”存在的问题与保护规划措施进行了归纳和总结。     

船只开进自动导引的建模与实现

船只开进的自动导引可以提高船只开进和结合的速度,可以提高船只结合的准确性.该文研究船只的开进过程,建立模拟其开进控制的数学模型.通过编制相应计算机程序,能实现船只开进和结合过程的自动导引.     

Concept risk assessment of a hydrogen driven high speed passenger ferry

A concept risk assessment of a hydrogen and fuel cell driven high speed passenger ferry has been performed. The study focused on fatality risk related to the hydrogen systems on the vessel, both during operation and while moored in harbour overnight. The main objective with the study was to evaluate whether the risk related to the hydrogen systems is equivalent to that of conventionally fuelled vessels and can be considered acceptable according to the requirements of the IGF-code (International Code of Safety for Ships Using Gases or Other Low-flashpoint Fuels). Since hydrogen behaves differently than other flammable gases, some adjustments to existing models and vulnerability criteria have been proposed. The conclusion of the study is that the estimated risk related to hydrogen systems is relatively low, and much lower than the expected acceptable risk tolerance level of 0.5–1.0 fatalities per 10⁹ passenger km. Furthermore, for the overnight mooring in harbour the estimated risks are well within acceptable limits. The work presented is part of a maritime case study performed within MoZEES, a Norwegian research centre for environmentally friendly technology and zero emission transport.     

Hybrid fuel cell and battery propulsion system modelling and multi-objective optimisation for a coastal ferry

Efforts from all sectors of society including the shipping industry are needed to limit the overall global temperature rise to within 2°C of pre-industrial levels by 2050. The hybridisation of Proton Exchange Membrane Fuel Cells (PEMFC) and Lithium-ion batteries for coastal ship propulsion systems may potentially offer beneficial emission performance. However, such hybrid systems are constrained by power and energy density limitations, lifetime; and costs as well as life-cycle emissions of alternative fuel/energy. There is a lack of holistic design methodology dealing with these uncertainties in the literature. This paper proposes a holistic design methodology for coastal hybrid ships based upon a developed model. The power source sizing problem is solved using constrained mixed-integer multi-objective optimisation in the external layer. The global optimum energy management strategies for an averaged operating profile are obtained from deterministic dynamic programming in the inner layer, while considering power source degradations in the sizing algorithm. The proposed methodology was applied to a coastal ferry to investigate the feasibility and benefit potential of adopting the hybrid PEMFC and battery propulsion system in Matlab. The case studies indicate that the proposed propulsion system can achieve at least a 65% life-cycle greenhouse gas reduction for the considered two cases.