AGV Scheduling Optimization of Automated Port Based on Disruption Management

The recent rapid development of China’s foreign trade has led to the significant increase in waterway transportation and automated container ports. Automated terminals can significantly improve the loading and unloading efficiency of container terminals. These terminals can also increase the port’s transportation volume while ensuring the quality of cargo loading and unloading, which has become an inevitable trend in the future development of ports. However, the continuous growth of the port’s transportation volume has increased the horizontal transportation pressure on the automated terminal, and the problems of route conflicts and road locks faced by automated guided vehicles (AGV) have become increasingly prominent. Accordingly, this work takes Xiamen Yuanhai automated container terminal as an example. This work focuses on analyzing the interference problem of path conflict in its horizontal transportation AGV scheduling. Results show that path conflict, the most prominent interference factor, will cause AGV scheduling to be unable to execute the original plan. Consequently, the disruption management was used to establish a disturbance recovery model, and the Dijkstra algorithm for combining with time windows is adopted to plan a conflict-free path. Based on the comparison with the rescheduling method, the research obtains that the deviation of the transportation path and the deviation degree of the transportation path under the disruption management method are much lower than those of the rescheduling method. The transportation path deviation degree of the disruption management method is only 5.56%. Meanwhile, the deviation degree of the transportation path under the rescheduling method is 44.44%.

Integrated Scheduling Optimization of One-Way Channel Ships Entering and Leaving the Port, and Tugboat Distribution

With the rapid development of shipping industry,the volume of maritime logistics is also increasing.Tugboats are the first service station for ships,and the working efficiency tugboats directly affects the ship’s attendance rate and the port’s service efficiency.Some domestic ports use one-way channel design due to the limitations of geographical position and natural factors.However,due to the particularity of the channel,the ships are entering and leaving the port in a disorderly manner and the tugboats are running empty,which causes problems in the port.Therefore,the port is in urgent need of improving the cooperative dispatching ability of one-way channel and tugboats.

Study of Product Quality Information and Construction of Its Decision-Making Support System and Measures to Improve People's Quality Concept

The 21th century is a "quality century". Facing the s evere challenge about quality, all the developed industry countries attach impor tance to the research and education about quality project. With the deepening of the reform of China and it’s joining to WTO, many industries and enterprises wi ll be confronted with severe challenge while being offered the opportunity to wa lk up to the world. The arrival of knowledge economy and web time has provided t he space for the innovation on enterprise management. It has also provided new m ethod and model for enterprise management, that is online management based on th e internet. The online management use an enterprise model including the goal of the enterprise and the scheme to carry out it to represent the whole operational of all the work. The online management is constructed on the integration of exp ert system, database, software and other technical models. How to scientifically manage the entire system of product, precisely master the condition of quantity and quality and analyze the rules of the change of produc t quality in order to carry out the overall control of quality, guarantee the go od condition of product as well as improve product quality and prolong it’s se rvice life was discussed in this thesis. Based on the above research the thesis also discussed how to develop the study on product quality information and const ruct it’s decision making support system. The concrete measures to improve peopl e’s concept of quality are also raised. Based on the type analysis, scientific management of product quality information should start from dynamic information of quality, instruction information as we ll as the information about the use, maintain, management and conservation of pr oduct, and induce them and further propose a design scheme of feedback system on product quality information, and then set up the blueprint of the information s ystem of product quality. This thesis included 7 chapters:1.the type of quality information;2.the content of quality information;3.the construction of the se nsitive web for transfering information, and collecting and transfering quality information rapidly and effectively;4.the way and procedure to transfer informa tion;5.the construction of quality information library for all phases; 6.the d isposal of quality information;7.the decision making support system of the mana gement of quality information;8.attach importance to three key factors on impro ving quality concept.

Port and Shipping Express Management: The Challenges Faced by West and Central Africa in This Century

Shipping industry has become more capital intensive, technically more demanding and subject to major global regulatory reforms. As a consequence, the number of African shipping lines has been severely reduced. International trade of the WCA countries remains weak, limited to 30% of their Gross Domestic Product (GDP). The goal of this paper is to provide a comprehensive overview of the port and shipping convey management in the WCA region, and of course to describe what has been achieved since then and what still have to be done to better its infrastructures and port community.

Tangible Assets Threats and Hazards： Risk Assessment and Management in the Port Domain

Port systems are more prone to being risk oriented. Many specific methods have been found to assess risk in a port area or operation. A review is presented in different approaches on human and environmental risks in port area. On the other hand, there is no specific risk management method or fi＇amework to cope with threats and hazards regarding on port machines or material accidents and port assets damages or losses. This paper presents a risk management methodology, seeking to investigate a process of assessing the assets hazards and damages into the domain of port container terminal, by taking into account its different factors and their mutual influences. This methodology constitutes a decision support framework that will be used to conduct port to port risk evaluations or to assess a whole port＇s and terminal＇s risk level in the critical field of assets damages and losses, in order to facilitate improvement strategies. An empirical study is contacted for the years of 2003-2012, in order to provide evidence for risk assessment and management in an economic effective way, regarding port assets damages and losses, at the Port Container Terminal of Piraeus in Greece.

Port Facilities GIS Application and Development of Port Facilities

In connection with the port facilities spatial distribution feature and volume of relevant attributes, applying of GIS technology and computer technology to build an application system to administrate port facilities, makes it convenient for port facilities administrator to know well of port facilities location and execute management. In this paper, the application and development of GIS to port facilities is studied. The main idea to understand the system design, the frame structure and its technical structure; and to demonstrate facilities information data processing＆ management and system function by connection with development instance. The construction of the system will enable the port facilities GIS become daily management tools and play an important role to improve efficiency, and promote the intelligent and convenient managemen^t of port facilities.

基于port write事件触发的RapidIO节点动态管理方法

针对现有大规模的综合化电子信息系统中RapidIO节点管理实时性不强、CPU资源占用多的问题,提出了一种基于port write事件触发的RapidIO节点动态管理方法。该方法利用RapidIO交换芯片的port write包上报退网或者入网的节点信息,通过该信息动态管理RapidIO网络中的所有节点。工程应用实测结果表明,该方法实时性高,CPU资源占用少。

Integrated Scheduling Optimization of Two-Way Channel Ships Entering and Leaving Ports and Tugboat Distribution

According to the passage rules of ships in the bidirectional channel,the realistic conditions of the limited number of tugboats in the port are taken into account.This paper studies the problems faced in the integrated scheduling optimization in terms of ship arrival and departure and tugboat allocation in two-way channel.A mixed integer programming model with minimum waiting time was established,and a heuristic algorithm was designed to solve the problem.Experimental results show that the model and algorithm in this paper can effectively solve such problems and provide support for port management.

Environmental stress model for evaluation of vessel traffic in ports and waterways

Environmental stress model is proposed as an effective tool to the analysis and evaluation of navigational safety in ports and waterways. Marine traffic simulations are carried out in a virtual port area with various arrangements and conditions. Calculations of stress values and traffic volume criteria are illustrated. The simulation results provide a valuable hint for safety management of vessel traffic. The model provides quantitative information and helps administrators in decision making to achieve desired safety level and improve the efficiency of vessel traffic in ports and waterways.

Evaluation of Anthropogenic Air Emissions from Marine Engines in a Coastal Urban Airshed of Texas

Corpus Christi, Texas, is a growing urban area with a busy port and a petrochemical industrial base that is currently in compliance with the US Environmental Protection Agency’s (EPA) National Ambient Air Quality Standards (NAAQS) for ozone. However, the Texas Commission on Environmental Quality (TCEQ) has classified this urban airshed as a near non-attainment area. A comprehensive annual air emission inventory based on marine engines activity was developed for the years of 2006-2009 for the Port of Corpus Christi, Texas using recent EPA approved methodology. A regional-scale photochemical model Comprehensive Air Modeling system with extensions (CAMx) was used to evaluate the impact of these emissions on the ground level ozone concentrations by zeroing out the emissions and employing Direct Decoupled Method (DDM) for sensitivity analysis to estimate the 8-hour ozone sensitivity coefficients due to NOx and VOC emissions from marine engines. The analysis has shown a localized increase of up to 7.8 ppb in the 8-hour ozone concentration very close to the port premises and a decrease of about 1.73 ppb further downwind. Ozone sensitivity analysis using DDM on the 8-hour ozone concentrations showed a higher sensitivity to NOx emissions. Thus, any NOx related controls of marine engines will benefit local urban and regional ozone levels.

基于联盟式区块链的域名系统根区管理体系

当前互联网域名系统的中心化根体系伴随着长期的担忧:一方面担忧国家代码顶级域可能由于根权威职能被破坏而失控;另一方面担忧去中心化的根替代方案会导致域名空间分裂.上述担忧的根源在于当前和替代的根区管理在自治化和透明化上不足,导致对当前的根权威或替代方案的不信任.为解决上述问题,提出一种新的域名系统根区管理体系——根共识链,通过增强互信缓解各方担忧.根共识链中多个自治的注册局共同参与根区管理,每个注册局下辖国家代码顶级域和根服务器运营者,共同构建一个基于联盟式区块链的根区管理体系.根共识链在维护统一域名空间和唯一全球根权威的同时,通过根共识链管理者们建立根共同体提高自治性,通过区块链记录和执行各方协议以及根区操作提高透明性.基于现网科研测试床的实验结果表明,根共识链能够有效应对上述担忧,具有良好的可行性与实用性.

6S管理模式在预防手臂式输液港港座感染中的应用

目的 观察6S管理模式指导下的护理干预措施降低手臂式输液港感染率的影响。方法 选取2019年3月至2020年3月植入手臂式输液港的患者101例为研究对象,2019年3~8月收治的乳腺癌患者42例作为对照组,2019年9月至2020年3月收治的乳腺癌患者59例作为干预组。对照组给予植入手臂式输液港常规护理,干预组给予6S管理模式指导下的护理干预,比较2组患者港座感染率、导管尖端位置,首针穿刺成功率、专科质量合格率,静脉治疗护理质量,护理安全、护士技能水平、6S理念的认知、设备管理规范率、置港时间,患者满意度,健康教育掌握率情况。结果 干预组港座感染率低于对照组,干预组首次穿刺成功率和导管尖端最佳位置情况明显高于对照组,差异有统计学意义(P<0.05)。干预组专科质量合格率,静脉治疗护理质量,护理安全明显高于对照组,差异均有统计学意义(P<0.01)。干预组在护士技能水平、6S理念的认知和设备规范率方面明显优于对照组,差异有统计学意义(P<0.05)。干预组置港时间、患者满意度、健康教育掌握率明显优于对照组,差异有统计学意义(P<0.01)。结论 6S管理模式指导下的护理干预措施能够明显降低手臂式输液港感染率,保证护理安全,提高护理质量及患者的满意度。

基于妊娠用药登记平台的父方药物暴露临床药学服务

目的交流国内围孕期父方用药行为及模式,探讨临床药师在父方药物暴露方面可提供的药学服务类型及作用。方法以围孕期父方药物暴露患者为服务对象,介绍临床药师基于妊娠/哺乳期药学门诊开展父方药物暴露咨询的临床实践工作模式。对咨询病例信息进行回顾性调查,分析人群药物暴露特征,并与国外致畸信息服务中心数据进行比较。结果2017年10月—2022年9月,共为门诊404例父方暴露患者提供药学咨询服务,建立标准化接诊流程。父方药物暴露咨询占比3.6%,以非计划妊娠用药最为常见(79.2%),人均暴露药品(2.6±1.7)种。咨询排名前5位药物类型为抗微生物药、中成药、心血管系统药物、消化系统药物及内分泌系统药物;使用频率最高5种药物为头孢菌素、沙坦类药物、恩替卡韦、左氧氟沙星、二甲双胍。开展妊娠结局有效随访261例,随访率81.6%,现有随访结果未提示父方药物暴露后的先天性异常信号。结论国内父方药物暴露很少受到关注,研究证据十分有限。由临床药师向公众和医疗保健人员提供基于循证证据的药物风险评估与药物治疗建议,并基于病例开展观察性研究,对促进备孕期父方用药安全具有重要意义。

肿瘤患者输液港自我管理行为现状及影响因素研究

目的分析肿瘤患者输液港自我管理行为现状及影响因素。方法选取2022年1—6月厦门大学附属第一医院肿瘤内科住院的257例患者作为研究对象,均采用癌症患者输液港自我管理行为评估量表进行问卷调查,分析肿瘤患者输液港自我管理行为得分及其影响因素。结果肿瘤患者输液港自我管理行为得分为(110.76±14.77)分,处于中等水平。不同性别、年龄、文化程度、婚姻、职业状态、居住地及植入时间患者输液港自我管理行为得分比较差异有统计学意义(P<0.05);不同病变部位、付费方式及主要照顾者患者输液港自我管理行为得分比较差异无统计学意义。多元线性回归分析结果显示,年龄<60岁、低文化程度、无业及植入时间>3个月为肿瘤患者输液港自我管理行为的影响因素(P<0.05)。结论肿瘤患者输液港自我管理行为处于中等水平,亟待提高,相关部门可重点关注年龄<60岁、低文化程度、无业及植入时间>3个月的肿瘤患者入手,并对其进行输液港自我管理行为干预,以提高肿瘤患者的输液港自我管理行为,从而使肿瘤患者获得更积极的生活及治疗态度。

单孔腹腔镜下子宫肌瘤剥除术围术期血液管理的临床研究

目的探究单孔腹腔镜下子宫肌瘤剥除术围术期血液管理的策略及临床应用价值.方法回顾分析2019年1月—2022年1月因子宫肌瘤在郑州大学第三附属医院妇科病区行单孔腹腔镜下子宫肌瘤剥除术的158例患者的临床数据,根据是否进行血液管理分为实验组(79例)和对照组(79例).比较两组患者的手术相关指标、不良反应及术后并发症的发生情况.结果实验组术后血红蛋白含量高于对照组(P<0.05);术中出血量、血红蛋白下降值、围术期输血率、手术时间、肛门排气时间、术后住院时长、术后炎症指标(白细胞、中性粒细胞百分比、C反应蛋白)、凝血指标(纤维蛋白原、D-二聚体)均小于对照组(P<0.05);不良反应及术后并发症总发生率少于对照组,但差异无统计学意义(P>0.05).结论行单孔腹腔镜下子宫肌瘤剥除术的患者实施围术期血液管理至关重要.它可以减少术中出血、降低输血风险、提高手术疗效、促进患者康复,值得大力推广.

船籍港管理增加船舶国籍登记年审制度的建议

船舶国籍登记是船籍港管理的源头,根据我国目前船舶国籍登记及船籍港管理的实际情况,分析了船舶国籍登记年审制度的必要性;并结合船舶检验与船公司安全管理中的做法,提出国内船舶国籍登记年审制度修订的建议,同时建议以此为契机提高船舶国籍登记政务服务质量。

连云港动力泥沙场信息共享平台设计与实现

为满足连云港港信息化管理需求,运用Python数据库预处理技术和JavaScript云平台技术,采用C/S和B/S混合体系构建应用系统平台.系统采用前后端分离的方式开发:客户端主要针对PC端浏览器开发,采用HTML、CSS、Javascript开发;服务器端程序采用Java开发,使用Spring Boot框架开发.平台操作简便,实现了港口相关数据可视化、历史数据的浏览和模拟数据展示等功能,满足港口航道管理信息现代化需求.

基于改进YOLOv8的渔港船舶进出港目标检测与统计方法

为减轻渔港执法人员在渔船进出港统计工作中的压力,提出了一种基于改进YOLOv8模型的渔港船舶进出港目标检测与统计模型YOLOv8n-Bi-FPN-EMA,该模型采用加权双向特征金字塔网络结构(Bi-FPN),引入高效多尺度注意模块(EMA)以提高模型的目标检测准确性和稳定性,并结合BoT-SORT跟踪算法实现对不同类型船舶进出渔港的分类统计。结果表明:与YOLOv8n模型相比,YOLOv8n-Bi-FPN-EMA模型的准确率提高了5.0%,mAP@0.5提高了0.2%,对执法船、拖船和渔船的识别准确率分别提高了9.9%、4.9%、0.3%。其中,对渔船的识别准确率为99.1%,召回率为84.4%,mAP@0.5为97.8%。研究表明,YOLOv8n-Bi-FPN-EMA模型在渔船识别上有较好的表现,可用于渔船识别与进出港统计的辅助工作。

港区多能源融合综合管控系统

在“碳达峰”、“碳中和”背景下,港区节能减排已迫在眉睫。若能充分利用港区本地的风、光等可再生能源为港区提供能源,可以从源头降低碳排放,助力港区“碳达峰”“碳中和”目标的实现。但新能源出力的不确定性为系统运行的经济性、安全性带来挑战,故需要对多种能源进行综合管控。文中主要针对某港区风力发电系统、光伏发电系统、储能系统、港区氢气的制、注、储、供一体化系统所构成的多能源融合系统,进行能量综合管控系统的设计。该系统整体分为5层架构,硬件上分控制区和管理区,可满足安全防护要求;功能上可协同调控风光发电、储能、制氢、氢燃料电池发电、港区用电、船岸用电等多个子系统,在保持多能融合系统稳定运行的同时最大化经济效益。

港口机械设备维修与管理策略研究

在当前的国民经济发展背景下,我国已经建设了大量的港口来满足不同地区对货物运输的需求,这有效地促进了各个地区之间的经济和贸易往来,同时也带动了地方经济的发展。为了更好地发挥港口的作用和价值,相关工作者需要进行深入反思,在港口建设过程中重视机械设备的作用和价值。探究了港口机械设备维修与管理的工作策略。