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Item type:Publication, Access status: with files , Digital transformation of planning in the pharmaceutical sectorPurpose: To adjust the inventory supply planning, through digital transformation that allows automation and tracking of demand behavior in real time and with low cost tool. Methodology: The collected database is loaded into an Excel along with the required input variables in each of the inventory policies. The data is processed and imported into Python, the demand forecasting is made and the policies are simulated to choose the one that generates the lowest cost. Results: The algorithm indicates the inventory scheduling to be implemented by the company according to the policy that allows the lowest costs and that supplies the demand of each product. Originality: The design of an original tool, that allows obtaining accuracy of the inventory management, with easy interaction of the user and the algorithm, through the reception of information and output of results in Excel, processed by python, across the synergy between the two programs.Publicationtype: Conference Paper200 372 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Access status: with files , Preliminary analysis on data quality for ML applicationsPurpose: This publication investigates preliminary data quality analyses to estimate the efforts and expected results of the use of data sets for ML solutions already in the data understanding phase of an implementation. Knowledge about the necessary data cleaning efforts and result qualities allows potentials to be estimated early in the process. Methodology: Through a literature research, characteristics of a time series as well as methods of data cleaning are analysed. Based on the results, a test environment is implemented in Python, enabling the evaluation of individual methods using sample data sets from the process industry and comparing them with different error analyses. Findings: The publication describes a detailed overview of data cleaning procedures and addresses a first Indication of a connection between the final achievable forecast quality and the degree of error of the original data set. Insights into the influence of the choice of preprocessing method on the achievable quality of the AI-based forecast can be concluded. Originality: Within the publication, the link between data characteristics in time series and preprocessing methods is established to draw conclusions in advance about the quality improvement to be expected from selected data cleaning methods and to provide decision support for the selection of the method.Publicationtype: Conference Paper107 227 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Access status: with files , Digitalization of rail freight transportPurpose: Increasing demand for freight transport is in direct contrast to climate policy goals. Rail freight can reduce overall emissions if it builds up more market share. To achieve this, the rail sector needs to increase its competitiveness with other modes of transport using digitalization. Thus, the aim of this work is to analyze digitalization measures in rail freight transport. Methodology: As we consider our problem as a multi-attribute decision problem, we measured the importance of different digitalization measures regarding its contribution to improve the overall competitiveness of rail freight transport based on an AHP-approach. Findings: Based on a systematic literature review we identified 17 digitalization measures, which we grouped into four categories: automated train operation, digital maintenance, automated marshalling, and digital access to rail transport services. Out of those categories, automated train operation should be more focused on, followed by digital maintenance. Competitiveness is based on quality improvement, cost reduction and performance improvement out of which quality improvement was considered most important. Thereby reliability as well as time flexibility were considered as equally important by the experts. Originality: The paper gives a detailed overview of the status of digitalization measures available in rail freight.Publicationtype: Conference Paper216 496 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Access status: with files , Drone based delivery system : restrictions and limitationsPurpose: Considering the idea of drone application in last mile delivery, this paper has examined literature studies about the restrictions and pitfalls which the organizations will face with for using drones in the last mile delivery. Moreover, the recent drone tests for commercial purposes in last mile delivery industry and challenges in these practices are investigated. Methodology: A survey-based approach has been applied to both the potential customers of the drone delivery service and also literature review for discovery of latest practices for drone enabled delivery projects has been targeted to identify the limitations and restrictions. Findings: The study demonstrates the problems that arise when the delivery drone crushes while in the air and the approach of self-exploding drones does not seem to make positive effect on this problem. Also, issues like special area for landing, noise of drone activities, safety and security of citizens in urban area are found to be main concerns. Originality: Very few research studies have been conducted in evaluation of using drones for last mile delivery operations focusing on current limitations and forthrightly downsides of drones of current state of the art. Therefore, this paper has tried to elaborate the limitations and restrictions from two perspectives of potential customers and technology developers.Publicationtype: Conference Paper169 517 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Access status: with files , Comparing manual and automated production and picking systemsPurpose: Automated processes play a crucial role, especially when high product quantities are desired. The automation of manufacturing and order picking processes enables companies to reduce the number of manual transports and order fulfillment time. Nevertheless, manual labor remains relevant. This paper analyses the key aspects that define manual and automated labor and their application in manufacturing and order picking systems. Methodology: We conduct a literature review to analyze manual and automated systems in general and for manufacturing and order picking systems. Using field-based research, we provide several real-world use cases where decisions were made in favor of either concept. Finally, we use morphological analysis to distinguish the key elements of both systematics. Findings: Manual labor cannot be substituted when dealing with highly volatile demands or a high variety of products. Moreover, human adaptability and prestidigitation can, thus far, not be automatized. In conclusion, manual as well as automated labor are not always interchangeable. Further, employing manual as well as automated labor is vital to maximize efficiency in manufacturing and order picking. Originality: While studies exist that deal with automated and manual labor, most are directed at automatization of processes, not considering the advantages of manual labor.Publicationtype: Conference Paper267 1036 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Access status: with files , Marine communication for shipping : using ad-hoc networks at seaPurpose: Oceans are a dominant means for transport of goods, which in turn has caused a boom in data volumes exchanged at sea. Internet connectivity at sea is heavily reliant on satellites, but it suffers from high cost, low bandwidth and complex regulatory requirements. This acts as an impetus to find alternative means of connection to ease marine communication. Methodology: A literature review related to SANET, followed by an analytical and simulation model-based evaluation, along with real-life trace analysis were performed. Three routing protocols (namely, ER, RRS, and S&W) and three communication technologies (VHF, LR-WiFi and WiMax) were inspected based on three use-cases: sending small data in emergency, large data sharing route information, and very large data for insurance purpose. Findings: The evaluation shows that VHF is suitable for distant communication of small data files, whereas WiMax works better for faster transmission of large data files. The performance of the routing protocols is heavily dependent on the deployed scenarios. Originality: To the best of our knowledge, this study is the first to compare the combination of the three communication technologies and routing protocols. The study paves the path for choosing appropriate technologies and routing protocols for the deployment of SANET in maritime logistics.Publicationtype: Conference PaperScopus© Citations 1 106 319 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Access status: with files , Prevailing technologies and adoption obstacles in maritime logisticsPurpose: Digital technologies (DTs) are transforming logistics operations in the shipping industry. Yet, the industry is only in the early stages of digitalization. Consequently, there is a lack of empirical evidence on applied DTs and related obstacles for DT adoption. Methodology: A multiple case study was conducted comprising ports, freight forwarders, and carriers. Based on 18 expert interviews and additional data sources, differences and similarities concerning currently applied DTs and associated obstacles to DT adoption were examined. Findings: Presented findings indicate comprehensive efforts toward a paperless and digitalized way of operating within maritime container logistics (MCL) by using DTs such as blockchain, cloud solutions, and artificial intelligence. Especially ports strive to achieve collaborative data usage but are frequently hindered by a lack of inter-organizational data sharing. Furthermore, the inherent complexity of the MCL chain and employees’ and managers’ defensiveness toward technological change needs to be overcome by applying suitable measures for DT adoption. Originality: The research contributes to the scarce literature of DT adoption within MCL by providing empirical insights into the state-of-the-art of DTs for ports, freight forwarders, and carriers. Additionally, this research is the first to address implications for tackling existing obstacles for successful DT adoption in MCL.Publicationtype: Conference Paper174 548 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Access status: with files , Sustainable urban logistics concepts : a collaborative design approach considering stakeholder perspectives(epubli, 2022-09); ; ; ; Purpose: Goods flows in cities increase due to urbanization and growing e-commerce. Deliveries become more fragmented and more difficult to consolidate and control. This leads to an ever-increasing strain on urban infrastructure and logistics systems. With our work, we aim to design a stakeholder-oriented urban logistics concept to improve sustainability and relieve urban infrastructure. Methodology: We chose a design thinking approach augmented by proven scientific methods. First, we analyzed the requirements of urban logistics stakeholders by conducting both a literature review and twenty-one qualitative interviews. Second, we carried out ideation workshops with different stakeholder groups to elaborate new solutions for urban goods flows. Findings: The findings offer deep insights into urban logistics stakeholders’ challenges, requirements and wishes and outline a clear point of reference for the development of sustainable urban logistics concepts. The results show stakeholders’ strong focus on consolidation, on intermodal transport and on a better connectivity between relevant IT applications as well as a strong interest in autonomous transportation systems. Originality: The work evaluates innovative urban logistics concepts empirically that have not yet been developed, designed or further investigated in this combination before. Thus, numerous opportunities for further work using modelling, simulation or field-testing are offered.Publicationtype: Conference Paper247 503 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Access status: with files , Sustainability in urban logistics : a literature reviewPurpose: The importance of urban logistics is on the rise. On the one hand, the population in cities is growing due to urbanization processes. On the other hand, there is a significant increase in the flow of goods (e.g., a boost in online purchases). Such changes are leading cities to face social, economic, and environmental issues, which urge to be addressed. Based on these premises, this study aims to identify, classify and provide an overview of the environmentally sustainable logistics solutions for urban contexts. Methodology: This study performs a systematic literature review. First, it provides a quantitative description of the results, highlighting eventual trends; second, it displays a narrative description of the papers considered to map the current solution and of the related methodology. Findings: The study highlights the maturity and interest in adopting more sustainable delivery options in urban logistics. The selection of suitable transport means, the engagement of stakeholders, as well as the definition of norms and regulations, emerge as the most discussed and promising solutions. Originality: This study is a first attempt to classify the existing body of knowledge related to urban logistics, analysing contributions based on different axes of classification and highlighting cutting-edge solutions to propose possible research directions.Publicationtype: Conference Paper112 163 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Access status: with files , Auction design in strategic freight procurementPurpose: This article aims to derive options for auction design in strategic freight procurement from the related literature and synthesize them into a design framework. Methodology: The proposed framework is based on a comprehensive literature review on auction design in strategic freight procurement. After conceptualizing the research topic and defining the scope of the review, a broad literature search was conducted. Inclusion and exclusion criteria were applied to select the literature. A coding scheme was used to extract the data. Findings: The literature review reveals design features and associated design options for each feature. This paper additionally identifies shortcomings in the scientific literature for auction design in strategic freight procurement. Based on this, the further need for research is derived. Originality: The literature to date has focused primarily on describing the auction process and solving the Winner Determination Problem as a subset of the auction process. In contrast, the specific auction design (e.g., bid types, lane design, number of auction rounds) is only considered in a fragmented way. The proposed framework fills this research gap by synthesizing design options from the freight procurement literature.Publicationtype: Conference Paper201 317