Advanced Logistic Systems - Theory and Practice

Launching of the logistics double diploma program beetween Hungary and Kyrgyzistan:

Péter Veres — 2024-04-12

In recent years, there has been a growing demand for education in the field of intralogistics, as companies began to treat this segment as a separate area, not just as part of procurement or storage. As a result, the demand for professionals specialized in this area has increased, not only in Europe but worldwide. The University of Miskolc, in collaboration with its former partner, the Kyrgyz State Technical University, has established a dual degree program with a significant emphasis on production logistics. This article presents the origin and background of the program, the initial challenges of course launches and how they were overcome, as well as providing insights into the future of logistics education.

Mobile handling units in advanced material handling systems

Péter Telek — 2024-04-12

To fulfil the increasing requirements of the social and economic environments, the equipment used in material handling processes have to be developed. The machines fitted exactly to certain manufacturing procedures some decades ago, cannot be found in the advanced version, they role are acted by other, earlier rarely used computer-controlled devices. The traditional method for the material handling is the using of mobile handling units, where the goods are moving on the machines, so the characteristics of the transportation are based on the parameters of the handling equipment. Suited to the new requirements, the structure and operation of the mobile handling units are changing but their application have similar conditions. There are many handling machines belonging to this category, this paper gives an overview about their most popular variations and their usability in advanced material handling systems.

Possibilities of using driverless handling robots in intralogistics

Balázs Komáromi — 2024-04-12

In this article we deal with production logistics within internal logistics, as well as the material supply of production, as well as the related material handling and the use of material handling robots supporting processes. Robot navigation is a multi-approach discipline that poses a major challenge in intralogistics. In general, the navigation principle, software and hardcer requirements of mobile robots must be prepared on the basis of logistics processes in such a way as to satisfy production with sufficient accuracy and safety. In the article we present the types of robots and give an insight about autonomous mobile robots.

Staffing and human resource assignment in U-shaped production cells

Tamás Bányai — 2024-04-12

Today, U-shaped production cells play an important role in manufacturing, as their flexibility allows for highly efficient production with a small number of operators. Since the cost of human resources has a significant impact on the total cost of the overall production process and the assignment of operators to tasks can have a major impact on the efficiency of the production process, it is important to develop design methods that allow the assignment of resources to tasks in a way that maximizes the efficiency of the U-cell manufacturing system. In this paper, the authors present a mathematical model for assigning operators to task sets using different objective functions. Calculations based on the presented mathematical model demonstrate that, given a suitable choice of objective functions, it is possible to determine an optimal operator-task assignment that can improve the efficiency of the manufacturing system.

Ranking of serving policies with simulations of indirect access warehouse

Tamás Hartványi — 2024-04-12

The efficiency of warehouse processes is influenced by the design, layout and operation of the warehouse. We have developed a simulation process to valuate how the initial arrangement of products affects logistics activities in an inhomogeneous storage environment with no direct access. Continuing our research, we compared the operational logics commonly used in warehouses with indirect storage access through that simulation. The results were classified using a complex evaluation method, and then the ranking of the service logics was established. We believe that our research results can be useful for all those who want to achieve a more efficient use of warehouse space while respecting service time limits.

Sidewalk autonomous delivery robots for last-mile parcel delivery

Henning Strubelt — 2024-04-12

The dynamics of e-commerce, combined with the growing number of users and the increasing volume of last-mile consignments, are driving current developments in logistics. As online commerce continues to grow, so does the need for active service providers to deliver courier, express, and parcel (CEP) shipments on time. Autonomous last-mile delivery is said to have the potential to transform the way we receive goods. As these autonomous delivery technologies continue to develop and become more widespread, it is possible to foresee a future where autonomous delivery vehicles seamlessly navigate our roads and sidewalks, bringing our online orders to our doorsteps faster and more efficiently than ever. After a general classification of sidewalk autonomous delivery robots (SADRs), this paper examines how far the development and implementation of these vehicles have progressed and which developments offer the greatest opportunities for ecological and economic use in the future.

Implementation of ship-to-sequence supply strategies

János Juhász — 2024-04-12

The supply chain optimization is key to improving the cost efficiency and sustainability of manufacturing and service companies. One of the most innovative strategies is just-in-sequence supply, which offers improvements over traditional just-in-time approaches. This paper focuses on the implementation of ship-to-ship supply, especially to mathematical modeling of just-in-sequence strategies.

It not only evaluates the entire supply process, but this approach allows for a comprehensive analysis of the financial impact of ship-to-ship supply for both suppliers and end-users. It goes beyond the analysis of the entire supply process; it allows an examination of selected processes at deeper levels and evaluates the impact of different factors on financial indicators.

Business models on the basis of digital infrastructure data

Steve Schulz — 2024-04-12

The project Ready for Smart City Robots (R4R) is developing strategies for the detailed capture of infrastructural environmental parameters. These are intended to be utilized for autonomous mobility and logistics applications on pedestrian and bicycle paths. The project evaluates the quality and completeness of data for Smart City concepts, using examples from (autonomous) micro-mobility in logistics and transportation. The results encompass the following areas: firstly, the identification of necessary environmental information for environmentally friendly, automated last-mile logistics, along with a continuous data collection method for up-to-date information. Secondly, the examination of various integration scenarios for autonomous delivery services and an autonomous bicycle rental system in rural areas. This includes the development of application scenarios and the scientific support of the prototype construction of the necessary technical prerequisites for the data/sensor boxes. The following outlines the business model potentials for data collection, autonomous micro-mobility, sharing services, and Smart City applications.

The role of emerging technologies in enhancing transparency in humanitarian logistics: systematic literature review between 2010 and 2023

Marwa Ben Othmen — 2024-04-12

This systematic literature review critically examines the influence of technology on transparency and humanitarian logistics between 2010 and 2023. The study employs the Preferred Reporting Items for Systematic Reviews and Meta-Analysis (PRISMA) methodology to analyze a comprehensive selection of peer-reviewed journal articles. The review identifies a growing body of literature that explores the potential of emerging technologies, such as blockchain, artificial intelligence (AI), and Internet of Things (IoT), to improve transparency in humanitarian logistics. The integration of these technologies is proposed to enhance collaboration, supply chain agility, and information flow. Hence, this systematic review provides a better understanding of the potential benefits of technologies in humanitarian logistics while highlighting the need for further research.

Navigating uncharted waters: black swan events and global supply chain resilience

Nagy Gábor — 2024-04-12

This paper delves into the critical realm of global supply chain management, exploring the challenges posed by black swan events—unpredictable and high-impact occurrences. In navigating these uncharted waters, the focus is on bolstering resilience to ensure the continuity and adaptability of supply chains. The study emphasizes proactive risk assessment and scenario planning, advocating for diversification, redundancy, and the integration of technology. Collaboration, agile supply chain practices, and resilient financial planning are deemed pivotal, along with a commitment to regulatory compliance and employee well-being. The pursuit of continuous improvement and the optimization of global networks round out a comprehensive strategy to fortify supply chains against the unforeseen disruptions that characterize the contemporary business landscape.

Establishing logistics start-up companies: the role of institutions

Ákos Tóth — 2024-04-12

The article examines how start-up companies in the transportation and warehousing sector can be encouraged by institutions from a macroeconomic perspective. The assumption is that start-ups are more likely to be successful in countries with higher quality institutional systems. In this article, the statistical data of the EU member states are compared using comparative analytical methods, followed by tests using econometric models to evaluate the results. On the one hand, the World Governance Indicator, Human Development Index, and International Property Rights Index of the examined European countries, and on the other hand Hit Horizon and EU startup industry databases are used to answer the puzzle. The assumption is that institutions play an important role in the success of start-up companies in the transportation and warehousing sectors.

Design methodology for the control logic of flexible production systems and related logistics

Zsolt Molnar — 2024-04-12

The ever-shorter product life cycle entails a shortening of the life cycle of the production site and production systems as well. One of the biggest advantages of flexible production systems is that new products can be introduced to them continuously, so that their life cycle can be significantly extended. Flexible manufacturing systems, on the other hand, also require flexible control, the logic of which must be defined already in the design phase. The main elements of the design methodology of the production and logistics layout that make up the research are the information relationship chart and the related decision tables, which are suitable for speeding up the design and later for facilitating the creation of a digital twin and control logic programming.

Modelling and optimizing material flows in electrical energy distribution – first model

Ernesto Cabrera Gonzales — 2023-12-19

The paper focuses on modelling and optimizing the distribution of material flows in a first version. Furthermore, the focus is on electrical energy flows, considering different energy sources and types of consumers. The most commonly used energy sources are nuclear, thermal, renewable and geothermal. The main categories of consumers include industry, residential, commercial and, increasingly, electric transportation. A first model is proposed which uses matrices for the various time constraints and uses graph theory to represent the flow of energy between sources and consumers. Variables and constraints are established to ensure that the flow remains within maximum capacities and meets minimum demands. In addition, a first version of mathematical model is proposed to minimize total energy supply costs.

Automation features of material handling machines

Péter Telek — 2023-12-19

Industrial, service and other processes applying more and more automated devices, there are many smart solutions in the homes and robots are standing at the gates. However, the situation of handling processes is a little bit special, because of the operation specifications of the handling machines. Most of the automation tasks and problems related to discontinuous handling machines, their application requires much more planning and operation tasks. This paper gives an overview about the application and specifications of automated material handling machines, especially focusing to those features, which can influence the handling processes and many parameters of the material handling machines. The objective of this research is to uncover the specifications of material handling machines. The results can help to build more effective handling systems and automated handling equipment.

Vaccine distribution network opportunities on a national scale

Kitti Seprényi — 2023-12-19

Building an effective distribution network is a significant advantage for any company. This is especially true for easily damaged or perishable items, where the length and speed of the transport, as well as the loading time, play a major role in maintaining quality. In this article, we examined the transport/distribution options for the creation of a vaccine distribution network in Hungary, which can meet strict rules. We took into account the driver’s working hours, the maximum delivery time of the vaccine, the storage options of the county seats, and as a result we got the most efficient distribution plan of Hungary. To solve the problem, we use conventional-, greedy-, and heuristic algorithms, which were compiled by Excel and its SOLVER extension.

The role of forecasting in the development of packaging systems

Henriett Matyi — 2023-12-19

As the competitive market becomes increasingly customized, companies strive to sell high-quality products to meet unique customer demands. We are living in the era of the 4th industrial revolution, where a lot of data is available in supply chain management from various sources and in different formats. Big Data and the Internet of Things (IoT) offer numerous opportunities for the proper utilization and interpretation of this data. Methodologies for forecasting provide assistance in making informed decisions and improving service quality. This document focuses on the role of forecasting in the development of packaging systems. To facilitate the selection of the appropriate packaging system, a conceptual simulation testing method has been developed and is presented in this paper, aiming to conduct impact assessments.

Project Oriented Management (POM) and Logistical Challenges in Maintenance and Network Development Systems

Zsombor Lóránd Latorcai — 2023-12-19

Maintenance, Refurbishment and Network Upgrading Systems occupy a prominent place among service systems, especially due to their dispersed location and large territorial extent. For the efficient opertaion of these systems, it is essential to apply Project Oriented Management (POM), which aims at optimizing logistic processes and meeting project specific requirements.

The importance of inverse logistics for public transport companies operating a large battery electric bus fleet

Vince Kruchina — 2023-12-19

Electric vehicles are becoming increasingly popular to reduce environmental impact and to make logistics systems more cost-effective. This trend is affecting not only passenger cars but also public transport, especially in developed countries. For electric buses, the recycling of high-capacity batteries is becoming an increasingly important issue, as no generally applicable recycling model has yet been developed in this area. The paper presents a literature analysis in this field and identifies the main trends in battery recycling. In essence, it opens the way for future research, i. e. the elaboration of different operational models.

Optimization of routing problems in manufacturing supply

Tamás Bányai — 2023-12-19

The optimal design of a suitable material supply process is important for the continuous, smooth operation of manufacturing processes, which includes the transportation and handling of work pieces, components, tools, equipment, pallets, packaging materials, and measuring instruments. The most common form of implementation of these material handling processes, especially in mass production, is the milkrun supply. In this paper, the author presents a method to optimise the milkrun material supply processes in manufacturing. The author gives a brief overview of research results related to milkrun-based material supply solutions. An Excel Solver-based optimization method is presented that is suitable to support the design of an optimal material supply process in any manufacturing environment by determining optimal material supply routes and optimal number of milkrun trolleys, depending on the supply demand, location of warehouse and manufacturing cells and the capacity of the milkrun trolleys.

Transport channels in advanced material handling systems

Péter Telek — 2023-10-30

To fulfil the increasing requirements of the social and economic environments, the equipment used in material handling processes have to be developed. The machines fitted exactly to certain manufacturing procedures some decades ago, cannot be found in the advanced version, they role are acted by other, earlier rarely used computer-controlled devices. This paper gives an overview about a special group of material handling machines –transport channels -, presented their operation characteristics and application possibilities to cover their usability in advanced handling systems. Statements presented in this paper are the first results of the research to uncover the special parameters and application advantages of these machines, which can show the development directions of them.

Route optimization opportunities in logistics

László Levente Nagy — 2023-10-30

The article describes the process of warehousing complementing with the definition of concepts essential for warehousing and the various areas that can be found in most warehouses. In the rest of the article, the relationship between the warehouse and production will be discussed,then the presentation of milkrun systems and the related milkrun routes will come to the fore. In the last part of this article, we will introduce how to calculate the optimal milkrun path using the Solver add-in for Microsoft Excel.

Logistics-based design of collection system for asbeston-containing roof structures

Tamás Bányai — 2023-10-30

Asbestos-containing roofing materials are an increasing hazard, which justifies their replacement by environmentally friendly roofing materials. Replacements can be carried out on an individual initiative basis, but a coordinated, systemic replacement will have a more significant impact. In order for such systemic asbestos removal to be successful from economics and logistics point of view, it is necessary to plan the associated logistics processes, as asbestos removal generates a significant transportation demand due to the large amount of waste generated. In the framework of this paper, the author presents an algorithm to plan the logistic process of centralized asbestos removal. A simple calculation method is presented to determine the cost of collection.

Supply chain models for non-reusable packaging logistics

Tamás Bányai — 2023-10-30

Packaging logistics plays an important role in today’s economy, because a well-chosen packaging can significantly increase the market share of a company. However, packaging has advantageous impacts on the purchasing, production and distribution processes, but negative impact must be also taken into consideration focusing on sustainability, costs, environmental impacts and logistics. Within the frame of this article, the author suggests a potential model structure for non-reusable packaging logistics focusing on the type of the collection and distribution routes, number of senders and receivers, location of recycling or disposal, maintenance and cleaning location, existence of agents, logistics centers and central depots. The suggested approach makes it possible to derive the typical supply chain models for both non-reusable and reusable packaging. Within the frame of this article, the most important supply chain models for non-reusable packaging logistics are described.

Improving the Logistics of Institutional Postal Services

Pálma Eszter Nagy — 2023-10-30

Postal services are often considered by the different institutions as a back-up service. Taking into account that in case of large geographical coverage these services can generate significant costs, it is important to optimize the postal service functions within these institutions and to develop the already existing conventional postal services. Within the frame of this article the authors review the logistics processes of the postal services at the University of Miskolc to propose improvements to the processes of postal services focusing on delivery. The main regulatory elements and the logistics processes of the institutional postal services are discussed and some critical remarks are described focusing on three main areas: the facility location optimization of the institutional postal services, the lack of use of modern technologies and the lack of modern administrative facilities. On the basis of these criticisms, the authors define recommendations for improving institutional postal services. Regarding the facility location optimization problem, a mathematical model and an optimization algorithm is described to evaluate the efficiency of the logistics processes of delivery services. The proposed methodology supports a cost-based analysis of different solution variants and a priority-based differentiation between institutions and offices. The suggested approach is tested with a real scenario, where the numerical results validate the efficiency of the evaluation of optimization algorithm. The second improvement direction is the application of a pneumatic tube system. The authors show the most important parts of the proposed pneumatic tube system, which can lead to decreased labor cost and increased service level.

Pick-by-vision technology as an advancement in logistics process solutions

Ján Kopec — 2023-10-30

The aim of this article is to describe pick-by-vision technology as an effective tool for solving logistics process problems. The technology is the result of the work of TeamViewer Germany GmbH and is already in use in German companies. The introduction of this technology helps companies in several aspects and brings several benefits. It is not a complex technology that would need complex and therefore expensive software and hardware. The technology is because up to 80% of all information is perceived by sight. This gives the operator a free hand. Several advantages are described in the article below. The technology works with a pick-by-light device that is attached to the employee's hand. By scanning, the glasses display all the information the operator needs. No paper or other order tracking system or logistics processes are required.

Developing the concept of roller conveyor systems using Industry 4.0 tools

Szabolcs Szentesi — 2023-07-14

In the increasingly globalized world, markets are no longer competed for by individual companies, but by groups of companies and networks. Due to the challenges of globalization and sustainability, the management of the material flow has become a critical issue for organizations engaged in manufacturing activities, as the implementation of changed products due to new regulations into the existing material flow service network is a major challenge. Today, Industry 4.0 tools help solve challenges. The tools of Industry 4.0 and Logistics 4.0 offer many opportunities to professionals today, which are driven by several key basic technologies, such as simulation technologies, digital copies, Big Data technology. These technologies have a positive impact on the sustainability performance of material flow activities. Simulation models play an important role in the evaluation and planning of material flow strategies. The purpose of this study is to apply the methods used in Industry 4.0 and Logistics 4.0 in the design of material flow on a roller conveyor.

Examples for the application of rule-based algorithms in the simulation modeling of the physical separation of automated guided vehicles

Róbert Skapinyecz — 2023-07-14

Nowadays, in parallel with the rapid spread of modern automation and digitalization solutions, different autonomous systems are playing an increasingly important role in the field of industry and logistics, a classic example of which is the case of automated guided vehicles (AGVs). Although these devices have been in use for a long time in the aforementioned areas, at the same time, in parallel with the progress of automation in the recent period, in many cases they can be seen more and more as autonomous mobile robots (AMRs), which perform the tasks assigned to them with a high degree of independence. At the same time, issues such as the problem of preventing collisions between individual freely moving vehicles in industrial environments naturally come to the fore. The purpose of this publication is to provide an example for the structure of some simpler rule-based algorithms in response to the former question, which may be relevant in terms of avoiding some potential collision situations of lower complexity. The operation of the algorithms was represented using the Siemens Tecnomatix Plant Simulation discrete event simulation software.

Developing a vaccine distribution network between county towns

Kitti Seprényi — 2023-07-14

Without the cold-chain network, it would be impossible in today's world to transport large quantities of perishable goods, primarily food and medicine, over long distances, but it is still very important that the necessary materials reach their destination on time and with adequate cooling. This is absolutely true for the vaccines created to stop the Covid-19 pandemic, which had to be distributed quickly and at certain storage temperatures to all parts of the world. This is a rather difficult task with NP-hard complexity. In this research, we are investigating the optimal way to get from a distribution center in Budapest to the county towns with transport vehicles, so that neither the vaccines deteriorate, nor we violate regulations. For this, we used vehicle route planning principles and Excel-Solver software.

Increasing possibilities of the reliability of logistic processes

Péter Telek — 2023-07-14

A very important word of our days is the consumption, which requires the general availability and low price of the goods, however it causes significant changing in the reliability of the different devices and appliances, especially in industrial aspects. There are also important role of the reliability in the logistic processes, but not only at the technical side, it appears also in different logistic activities. In this paper, an overview is presented about the logistic aspects of the reliability, outlining those elements and development possibilities which can help to increase the reliability of the logistic equipment and logistic systems.

Introduction of vehicle communication and intelligent traffic management systems

Dávid Makó — 2023-07-14

Nowadays, the vehicle industry is heading for a significant change. There are fundamental debates about what type of drive would be ideal for vehicles in terms of environmental awareness, because environmental protection has become one of the main directions in vehicle production, especially due to the fluctuating raw material sources in today's uncertain situation. Another issue that is at least as important is traffic safety. Almost everyone agrees that the way to safer traffic is mainly through the development of vehicle communication. This is a direction that develops in all vehicles, regardless of drive, construction, or performance. There are several types of vehicle communication systems, but it is not easy to categorize these systems, as it is difficult to clearly separate them, as there are quite large overlaps between them. This article provides an overview of these vehicle communication systems.

Assessment and development of the selective waste collection at the University of Miskolc

Márton Gulyás — 2023-07-14

The importance of a selective waste collection system cannot be underestimated in today's economy. It can be seen as a principle of individual and social responsibility to reduce some of the pollution caused by over-consumption. Selective waste collection is an important pillar of circular economy, but there are still many sceptics and unwillingness to do so in Hungary. There are many ways to reduce this phenomenon, but without physical selective collection points, the system will unfortunately not work. The aim of this publication is to assess the location of these collection points in the University of Miskolc and to propose ways to improve their distribution.

Practical method of the evaluation and selection procedure of a logistics provider in a technological environment provided by digitalization

Gábor Nagy — 2023-07-14

The purpose of the study is to present the possibility of evaluating and selecting a logistics service provider from a practical point of view in the digitalization environment of the fourth industrial revolution. We will present a possible procedure that makes it possible to use large amounts of data in the evaluation of a service provider. As a result of the task, the organization responsible for the decision receives exact information about the performance of the service providers present in the competitive market according to its own needs, in this way each company can decide and choose the ideal/optimal service provider according to the conditions it considers important.

Use and impact of Kahoot in logistics education

Ákos Cservenák — 2023-07-14

Nowadays, the younger university students are increasingly using digital solutions, therefore teachers should turn to these solutions as well. One of the tools for this is to use an online platform instead of paper-based solutions for short end-of-class assessments. There are several such available software on the market, and this paper presents the use and results of Kahoot through two case studies. The details of the case studies also show the impact in logistics education.

THE INDUSTRIAL REVOLUTION OF OUR AGE: THE OPPORTUNITIES IN THE ELECTRIFICATION OF PUBLIC TRANSPORT BUSES

Vince Kruchina — 2023-04-05

For operators of public transport companies the increasing use of battery electric buses for their services is not only motivated by the need to support the green transition or to reduce general noise levels: purely economic considerations also justify the need for a technological shift. Volánbusz Zrt., which has the most significant bus fleet in Hungary, carried out a large series of tests and measurements in order to prove the efficiency of electrification and its environmental sustainability and energy advantages with reliable economic calculations based on its own data sources. The article presents the data and calculations that form the basis of the analysis in detail. Taking all of this into account, it can be stated that electrification can revolutionize the operating model of the company, which has a great impact on supply chain management that is more sustainable than before.

IMPACT OF SHIFT PATTERN ON OPTIMAL HUMAN RESOURCE MANAGEMENT STRATEGY

Tamás Bányai — 2023-04-05

Today, human resource management plays an increasingly important role, as both production and service activities require a large number of employees, so an optimal human resource management strategy can have a direct impact on the efficiency of the production and service process. Within the frame of this article, a new approach is described, which focuses on the scheduling of employees having different shift patterns. The numerical analysis of different scenarios shows the impact of the scheduling on the number of required employees and the total cost of human resources.

LOGISTICS ACTIVITIES OF MAINTENANCE PROCESSES

Péter Telek — 2023-04-05

The maintenance process, as a part of the operation of manufacturing systems, is also developing, following the changes in the production area. One of the most important characterization of this changing is that the maintenance appears as an independent service element of the production process. Because of this tendency maintenance logistics also has to be changed, which requires new elements, relations and new approaches. Main objective of our research is to uncover the relations among the efficiency of the maintenance processes and the material handling parameters. In this paper we summarise the development of the maintenance logistics and give an overview about the actual handling tasks, which must be solved.

ANALYSIS OF FUEL COSTS INCURRED DURING TRANSPORTATION

Vanessza Elizabet Koropcsák — 2023-04-05

The unexpected war situation in Europe caused extraordinary supply disruptions on the market of domestic and international raw materials. As a result, the companies found themselves in several unfavorable situations, which endangered their daily operations. The aim of the research work is how the fuel costs of companies performing transport tasks can be reduced, and to what extent they represent a financial burden - typically in the provision of daily activities. When purchasing a significant amount of fuel, the price difference provides an opportunity for development, which can be used to achieve significant annual cost savings. It can be beneficial for a business, as the cost saved can be booked or shown as profit. In this way, the development of processes within the company can come to the fore, as it can strengthen the weak points of the company.

Keywords: raw materials, shipping, transportation, supply chain

EXAMINATION OF THE DEVELOPMENT POSSIBILITIES OF THE CROSS-DOCKING STRATEGY

Bence Bodnár — 2023-04-05

Cross-docking is used as logistics strategy, where the goods are removed from the incoming vehicles to be forward directly to the outgoing vehicles. Based on the logistics processes are need more attention to minimalize the storage time or completely neglecting it. It can be used by several different companies around the world due to its economic and environmental benefits. Perhaps the most popular example is the two giant companies of American owners, Amazon and Walmart, whose main activity has a major role to play in the success of a well-planned and operated distribution logistics. With its use, the transportation costs can be highly minimized, products from several suppliers can be combined to a single shipment for economy, and lead times are reduced, and inventory costs are improved.

LAYOUT OPTIMIZATION OF A MULTI-CENTRE DISTRIBUTION MODEL

Péter Veres — 2023-04-05

Supply chain planning is becoming increasingly important today, as it is essential for efficient operations to design supply chains that are flexible, sustainable, highly available and able to respond quickly and efficiently to dynamically changing customer needs, while operating cost-effectively. When designing supply chains, it is important to consider not only the investment cost but also the operational cost. This requires the most accurate forecasting of future supply chain needs. In this paper, the authors present a new method for the optimal design of a multicentre distribution network, which uses evolutionary optimisation and Monte Carlo simulation to determine the optimal distribution network structure in an arbitrary geographical area. The design takes into account investment and operational costs, with particular emphasis on the question of how to estimate the average transportation distances in a distribution network with an unknown structure.

POSSIBILITIES OF USING DIGITAL SHADOWS IN THE PROCUREMENT PROCESS OF TECHNOLOGICAL EQUIPMENT

Zoé Rebeka Bogdán — 2023-04-05

The emergence of the fourth industrial revolution was made possible by the emergence and rapid spread of cyberphysical systems. One of the major developments of this era was the digital twin model. The digital twin is not just a 3D model or a simple simulation. It can be used to create a real-time model of the observed physical element that collects environmental data using sensors and can also predict the failure of a product based on the information provided. If the system has actuators, we are also able to feed back the change in the virtual model to the physical reality. Closely related to the modern digital model is the digital shadow, which collects data in the same way as the twin, but feedback to physical reality has not been implemented. In the dissertation, an initial concept is presented, which describes the application possibilities of digital shadow in terms of the procurement process of new technologies (stations, machines).

SHARING ECONOMY: CAR SHARING SYSTEMS

Dalma Séra — 2023-04-05

The basis for the development of the sharing economy is that certain of our objects are unused most of the time, they just take up space, and in many cases their ownership involves unnecessarily high costs. This encouraged people to save and look for cheaper solutions, which could also result in an alternative source of income. As a result of this new approach, we become more environmentally conscious customers and the realization of sustainable consumption becomes possible. The sharing economy has appeared in several industries and achieved significant results in the last few years, but the mobility industry is the area that can boast the most significant results.

The role of procurement and freight forwarding in dealing with on-site scheduling problems

Ákos Salétli — 2023-12-19

The problem of poor delivery schedules is one of the logistical problems that much more companies face than we should think at the first glance. But many companies may not realize this without the use of lean tools. This paper describes the role of procurement and supply management in dealing with a site scheduling problem, covering the concepts, history, responsibilities, sub-roles, and types.

ORDER PICKING SYSTEM EVALUATION USING RTLS METHOD

Bence Pallai — 2023-04-05

In order to maintain competitiveness, it is essential for modern industrial companies to record as much data as possible, by processing which they can obtain valuable information for the development and optimization of production and logistics processes. The RTLS system provides an opportunity to perform this task. RTLS, or Real Time Location System, is a Real-Time Local Positioning System used to identify people and moving objects and to determine and continuously track their current position in a configurable space. Real-time positioning can help us to locate the position of objects and people inside the building. The paper presents and compares the relevant RTLS systems used in practice. In addition, the implementation process of an RTLS system created at the Institute of Logistics is described, as well as its application potential in relation to a case study developed. he abstract contains a short, general description of the topic and the research shown in the paper.

IMPACT OF DYNAMIC LOT SIZING TECHNIQUES ON COSTS OF MATERIAL REQUIREMENT PLANNING

Krisztina Veronika Gáti — 2023-04-05

Since the beginning of computerised production management, material requirement planning has been a central part of optimising company processes. The reason for this is that the precise computation and optimisation of material requirements can result in significant cost savings for the company in the short term, which can have a significant impact on the overall efficiency of the company's processes. To this end, the definition of the material requirements for production has been complemented by new optimisation methods that can be used to further improve the solution of the problem of dynamic lot sizing. In this paper, the authors investigate the effectiveness of the Wagner-Whitin and Silver-Meal algorithms through a scenario analysis. The results demonstrate that significant cost savings can be achieved by using both algorithms.

INNOVATIVE INDUSTRY 4.0 APPLICATION POSSIBILITIES FOR ROLLER CONVEYOR DESIGN

Szabolcs Szentesi — 2022-12-15

As a result of constantly changing customer demands, it becomes necessary to review the material flow systems operated by companies from time to time. The purpose of this is usually to minimize material flow losses and/or to ensure the necessary transport capacities. Revisions can affect intermittent and continuous operating material flow systems, and the combination of these. The thesis examines the areas where roller conveyor systems are used. Such systems are typically found in the food industry and the vehicle industry. The development of the 4th industrial revolution, its most important tools, and their applicability in the design and operation of roller conveyor systems will be presented. The article outlines a number of new research areas that may be of corporate interest.

TRENDS IN WAREHOUSING AND MATERIAL HANDLING SOLUTIONS – PAST

Kitti Seprényi — 2022-12-15

Today's world is changing and evolving with incredible speed. The constantly growing population leads to a large number of demand for increasingly diverse products. Since our main goal in logistics is to make the customer satisfied, so in order to do this, it is essential to develop technology. Over the past few years, mainly due to a pandemic, e-commerce has boomed. However, companies need to store the ordered products somewhere, that is, they need warehouses. We have to choose carefully which warehouse is the ideal one for us, since if we do not choose the right one, the final delivery may even be delayed. Although warehousing is of great importance in today's world, no one has summarized, like this paper, how we got to the warehouses we use today. The paper shows from antiquity to the 2000s how the development took place.

MATERIAL HANDLING EQUIPMENT SELECTION ALGORITHM FOR PRODUCTION WORKPLACES

Péter Telek — 2022-12-15

Nowadays, the consumption is the most significant factor in the economy. The consumption requires different items, which must be produced by the industry. Production processes are realized mainly on workplaces, so their importance is inevitably. This paper presents an overview about the planning process of material handling machines, especially for the production workplaces. The research, shown in this paper, targets to develop a model, which can help to select the most suitable material handling equipment for different production workplaces. The topic presented in this paper deals with the building of selection algorithm for the exclusion of non-applicable equipment types. To show the useability of the concept an example will also be presented.

THE USABILITY OF CRAFT LAYOUT DESIGN METHOD WITH THE EXAMINATION OF SIMPLIFICATIONS

Péter Veres — 2022-12-15

Logistics optimization has been increasingly attention by companies in recent decades, but due to the current situation, such as the pandemic, recession, and supply chain reorganizations, manufacturers have to resort to more serious tools. One of these is layout redesign, which fundamentally changes a material flow process. One of the most well-known methods is the CRAFT method, which uses two very serious simplifications. In this work, we will examine how much difference the simplifications make in a system close to reality, and can we safely use the CRAFT method.

LOGISTICS AND COLD CHAIN RELATIONSHIP

Kitti Seprényi — 2022-12-15

The emergence of vaccines to contain and defeat the now-famous virus has been a huge step forward for mankind, but how and under what conditions these vaccines can get from the place of production to the place of use has been a major challenge. Whether in packaging or transport, there are stringent requirements to be met and COVID-19 vaccines have different cold chain requirements depending on the type of vaccine, its thermal stability, its current condition, and its shelf life at different storage temperatures. Currently, one vaccine must be stored and transported at ultra-low temperature (ULT - Ultra-Low Temperature) between -90°C and -60°C. Effective use of this requires good cold chain planning, efficient management of vaccine supply, logistics and distribution, and strategic deployment of ULT equipment. The pandemic has brought cold chain logistics to the forefront, and in this paper, we examine the relationship between logistics and the cold chain.

THE ROLE OF DIGITALIZATION IN THE QUALITY ASSURANCE OF LOGISTICS NETWORKS

Nagy Gábor — 2022-12-15

Logistics, as one of the most integrated sciences, plays a key role in many segments of company operations. Nowadays, efficient, fast and reliable customer service is important, and to achieve this, companies have begun to operate in a networked manner. In addition to customer satisfaction, an important aspect in today's economic environment is finding the optimal point for each process, thus achieving a cost-effective operation strategy. With regard to the forms of operation, the network structure appeared, which changed the production structure taking place at one location to the multi-location operation. This form of operation has proven to be effective in serving the globalized system approach, but the system alone cannot be effective. It is very important to regulate, maintain, supervise and improve the processes for which quality assurance is responsible. The thesis presents the versions of the logistics network models, their characteristics and the technological solutions present today that can increase the level of quality. Furthermore, using a known method, we present a possible performance measurement procedure for logistics processes.