Information models and functions for CIM in shipbuilding

In order to make significant progress in design and manufacturing systems, all industries must consider integration. This paper considers information models and functions for a computer integrated design and manufacturing system in shipbuilding. The authors propose the product model and several alterative functions for designing a ship's structure, and develop a “ship definition system for computer integrated design and manufacturing.” This system is called SODAS (System of Design and Assembly for Shipbuilding). An object-oriented concept is used to develop this system. In order to define a ship's structure, the authors propose the product models of “parts member” and “parts connection,” and the product models of “Room,” “Unit,” and “Module” are introduced to define the compartments, internal structures and intermediate products of a ship. Therefore, all information about a product from the design to the production stage is stored in the product model. As well as the product model, the “design function,” “cutting function,” and “virtual assembling function” are introduced. By using the design function, any type of ship's structure can be designed, and by using the cutting function, the design of a ship's structure can be cut into smaller elements. By using the virtual assembling function, a simulation of the manufacture of a ship's structure can be carried out.     

汽车自动变速器油的发展现状与正确使用

介绍了汽车自动变速器油的发展现状,即自动变速器油的分类,常用汽车变速器油的品种。阐述了汽车自动变速器油的使用性能,即粘度特性、摩擦特性、抗磨性、抗氧化性、防腐防锈蚀性、相容性、抗泡沫性等。在此基础上,介绍了汽车自动变速器油的正确使用。     

港口危险化学品现场安全管理

港口危险化学品现场安全管理是港口安全管理工作的重点。分析了港口危险品管理现状和事故发生的原因,提出了相应的对策和办法。详细阐述了完善安全生产准入制度和强化管理、强化控制的具体做法。完成了由传统安全管理向现代安全管理的跨越。     

The Green Ship Routing and Scheduling Problem (GSRSP): A conceptual approach

Recent reviews of the literature on ship routing and scheduling note the increased attention to environmental issues. This is an area of paramount importance for international shipping and will be even more so in the future. This short communication is motivated by the increasing attention to ‘green’ routing and scheduling and outlines some possible ways to incorporate the air emissions dimension into maritime transportation OR. The main contribution of this note vis-a-vis the state of the art is that it conceptualizes the formulation of the ‘Green Ship Routing and Scheduling Problem’ (GSRSP) based on existing formulations and highlights all the important parameters of the problem.     

基于物联网的钢材物流理货信息系统的研究与应用

为优化钢材物流理货，开发了基于物联网的钢材物流理货信息系统，介绍信息系统的研究背景。分别介绍钢材物流理货信息系统的功能、具体研究内容以及它的应用。该系统的应用实现了港口理货作业现场即时打印直提货物的清单，取得良好效益。     

加强战略装（卸）车点和区域物流基地建设 促进铁路现代物流发展

广州铁路(集团)公司现有战略装(卸)车点和物流基地的能力限制了广铁集团现代物流的发展。要通过加快战略装(卸)车点和区域物流基地建设,大幅度提高集疏货物能力,缓解运输紧张局面;创新运输组织模式,加强点线协调,推进货运组织规模化生产等方式实现集约化经营、精细化管理,促进广铁集团铁路物流的发展。     

Post-disaster evacuation and temporary resettlement considering panic and panic spread

After a disaster, a huge number of homeless victims should be evacuated to temporary resettlement sites. However, because the number of temporary shelters is insufficient, as are shelter building capabilities, victims must be evacuated and resettled in batches. The perceived psychological penalty to victims may increase due to heightened panic when waiting for evacuation and resettlement, whereas psychological interventions can decrease the magnitude of this panic. Based on the susceptible–infective-removal model, panic spread among homeless victims and other disaster-affected people is modeled, while considering the effects of psychological interventions on panic spread. A function is derived to compute the increase in the number of victims to be evacuated due to panic spread. A novel mixed-integer linear program is constructed for multi-step evacuation and temporary resettlement under minimization of panic-induced psychological penalty cost, psychological intervention cost, and costs associated with transportation and building shelters. The model is solved by aggregating objectives into a single objective by assigning weights to these objectives. With Wenchuan County as the test case, the epicenter of the 2008 Sichuan earthquake, the influence and the sensitivity of parameters, tradeoff among costs, and the effects of various functions of panic strength on psychological penalty and monetary costs are assessed using six experimental scenarios. Analytical results reveal the complexity and managerial insights gained by applying the proposed method to post-disaster evacuation and temporary resettlement.     

Crucial factors influencing international logistics operations for African landlocked countries – A case study of Burkina Faso

ABSTRACT

This study aims to evaluate the crucial factors influencing international logistics operations for African landlocked countries. To this end, a case study and a questionnaire survey were conducted. A total of 147 usable responses from container shipping firms were obtained as a result of the questionnaire survey. The results of factor analysis revealed that transportation capability, external risks, information integration, logistics infrastructure, local agents’ logistics capability, and national law and policy were crucial factors influencing the logistics operations of African landlocked countries. Specifically, local agents’ logistics capability was perceived by respondents to be the most important factor. Moreover, the results of the study also indicated that the highest factor mean values of small shipping companies were related to transportation capability, external risks and the local agents’ logistics capability, whereas container shipping companies that arranged trucks for inland transportation paid more attention to the external risks, logistics infrastructure, the local agents’ logistics capability, and national law and policy.