Logistics

The handling of general cargo in seaports is a time-consuming and resource-intensive activity. The implementation of novel handling technologies opens new potential to improve the handling process and its sustainability as well. This paper introduces a magnet system based approach for handling steel products in seaports and addresses its economical and ecological potentials. It presents a detailed event driven process chain model (EPC) of the handling process and an analysis of the corresponding potentials. Besides process related potentials like decreasing operative costs or increasing the process stability, this paper presents the capability of this new technology to reduce the ecological effects by saving dunnage.

Nowadays, the economic determining factors are volatile and change dynamically leading to high uncertainty and risk for supply chain partners. Increased supply chain flexibility is not only considered as a success factor but is also essential for companies to remain competitive. The present article is based on selected results from expert interviews, a focus group as well as a survey analysing the status quo concerning supply chain risk management and the importance of flexibility. Afterwards, a process model is presented which consists of an approach to deduct strategies and measures in order to adjust supply chain flexibility in a structured way. The approach can be implemented for risk mitigation in practice.

Changeability is the capability of an organization to establish changes with a lasting effect. The possibility to correctly plan and create changeability of an organization already in the phase of plan-ning is an essential factor to be taken into account when considering changeable logistics systems. For this reason there is a need for conceptual change of established planning methods. In the context of discrete-event simulation, as an established planning method, the modular design of simulation models may be a first step to include changeability into model-based analysis. Against this background, This article discusses possibilities to build modular simulation models and shows how this modular design can be used in practice.

The article deals with the topic of demand and capacity management in inter-organizational production networks. It addresses the question how firms can coordinate build-up as well as reduction of the capacities of their production resources. For this purpose a decentralized negotiation-based coordination mechanism is presented. By this production networks are enabled to synchronize their capacities without the help of a central coordinator. The coordinating effect of the proposed decentralized planning approach was proven also in comparison to existing centralized network planning methods.

Dynamic production and logistics systems along supply chains have to operate smoothly with each other in order to satisfy customer demand in time. This task becomes even more challenging in the presence of perturbations affecting the systems. In order to address this challenge, information concerning capabilities and employment level should be appropriately exchanged between production and transportation systems. Nevertheless different stakeholders perform the planning and control of the individual systems, making locally bounded decisions. In this article we present a new approach for the alignment of production and transportation processes that enables an advanced handling of perturbations on the operational level. To this end we introduce a trigger that indicates when a re-planning of existing schedules becomes necessary. We also present a collaborative planning approach that allows for an advanced management of perturbations and a dynamic vehicle routing concept for the on time ...

Wearable computing systems allow the support of workers in ongoing processes of automotive logistics. In a previous research project a wearable computing system, which is called easyTracing System, was developed. To this date, the easyTracing System is not technically mature because of the following reasons: First of all, the system was just tested in a laboratory. Hence, field tests are necessary, for example respective robustness. Besides, for supporting workers an efficient method for process controlling has to be developed. Both to make the technology of the easyTracing System workable and to develop an efficient method for process controlling are objects of research. This paper presents an approach for both development projects with the characteristic of a simultaneous processing.

Several logistics service providers are involved in the handling process at the seaport terminal in Bremerhaven, Germany. This process includes the arrival of the vehicles by vessel from the automotive manufacturer followed by the storage and the technical treatment ending with the transport to the automotive retailer. A cross-company approach of the complete process is necessary in order to improve the qua-lity of services and to enhance the utilization of the terminal as a holistic system. A control centre is used in order to generate information transparency. This is the basis for the development of cross-company planning and scheduling method. The simulation study was used to investigate the effectiveness of the developed method towards process and economic performance indicators of the supply chain.

After many improvements in production through the introduction of production systems, the focus is now shifting towards optimization of the supply side. Agility becomes to a success factor for supply logistics. New challenges arise from the increased demands of the “second lean wave”, from global supply structures and a turbulent environment. The design of the supply logistics begins at the “point of use”, at the workplace. A smoothed value stream takes place not only at the factory; it also requires a tacted supply at the supplier side: the utilization of tact principles at supplier transports is the logical extension of the production system in terms of a synchronous value stream. Prerequisite is logistics performance of the suppliers. An agile supply logistics optimizes proactively supply chain structures and processes.

Since the turn of the millennium companies are confronted with a tightly interwoven network consisting of changed framework conditions. Thus, for many companies it is necessary to form a network, together with a simultaneous securing of liquidity. Additionally, it is important to consider ecological values. The selection of adequate concepts in the supply chain management in combination with the right extent in logistic services poses a major challenge. However the dynamic assessment and selection of logistic concepts is quite possible. This article presents such an approach.

environment poses huge challenges to production enterprises, especially with regards to logistics. The Logistic Operating Curve Theory, developed at the Institute of Production Systems and Logistics (IFA), is a recognized approach to describing logistic interactions, nevertheless, it reaches its limits when it comes to the dynamic aspects. In order to facilitate a timely and optimal Logistic Positioning a method is developed for quickly and reliably identifying dynamic processing states.