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Optimizing smart manufacturing systems using digital twin
Robert Ojsteršek, Aljaž Javernik, Borut Buchmeister, 2023, original scientific article

Abstract: Presented paper investigates the application of digital twins for the optimisation of intelligent manufacturing systems and focuses on the comparison between simulation modelling results and real-world production conditions. A digital twin was created in the Simio software environment using a data-driven simulation model derived from a real-world production system. Running the digital twin in real time, which was displayed graphically, facilitated the analysis of key parameters, including the number of finished products, average flow time, workstation utilization and product quality. The discrepancies were attributed to the use of random distributions of input data in the dynamic digital twin, as opposed to the long-term measurements and averages in the real-world system. Despite the limitations in the case study, the results underline the financial justification and predictive capabilities of digital twins for optimising production systems. Real-time operation enables continuous evaluation and tracking of parameters and offers high benefits for intelligent production systems. The study emphasises the importance of accurate selection of input data and warns that even small deviations can lead to inaccurate results. Finally, the paper high-lights the role of digital twins in optimising production systems and argues for careful consideration of input data. It highlights the importance of analysing real-world production systems and creating efficient simulation models as a basis for digital twin solutions. The results encourage extending the research to different types of production, from job shop to mass production, in order to obtain a comprehensive optimisation perspective.
Keywords: smart manufacturing, digital twin, optimisation, simulation modelling, Simio, case study
Published in DKUM: 25.03.2024; Views: 195; Downloads: 9
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Casebook on European Order for Payment Procedure and European Small Claims Procedure
2022, proceedings

Abstract: Publication Case studies on European order for payment procedure and European small claims procedure was created as part of the Train to Enforce project and is the result of the collaboration of eight faculties of law across Europe. The publication contains numerous case studies focusing on European order for payment procedure (Regulation No. 1896/2006) and European small claims procedure (Regulation No. 861/2007). Case studies focus on both the practical and theoretical aspects of the European order for payment procedure and European small claims procedure. They will promote self-learning on cross-border debt collection in the EU.
Keywords: case study, european order for payment procedure, european small claims procedure, cross-border debt colletion, civil and commercial matters.
Published in DKUM: 30.05.2022; Views: 706; Downloads: 79
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The transfer of knowledge in intra-organizational networks : a case study analysis
Władzimierz Sroka, Joanna Cygler, Bożena Gajdzik, 2014, original scientific article

Abstract: Background: In today’s business environment, a company is able to maintain its competitive position if it constantly generates knowledge and disseminates this knowledge within the organization, as well as transforms it into new competences. The ability to transfer knowledge becomes one of the key factors in the improvement of a company’s competitive position. This hypothesis is applicable particularly in the case of cooperation within networks, as they are an excellent opportunity for mutual learning between partners. Objectives: The purpose of the paper is to analyse the process of knowledge transfer in intra-organizational networks. Method: Due to the specificity of the research object, the case study method has been chosen. In order to make an in-depth analysis of the case study, we selected a group of several criteria based on the theory which we believe to be fundamental to the effectiveness of knowledge management in networks, and compared them with the situation in the ArcelorMittal Group. Results: Our research show that ArcelorMittal Group has met almost all the criteria of effective knowledge management in its intra-organizational network. Some exceptions, albeit merely to an extent, are mostly the result of historical circumstances, , i.e. the process of growth through acquisitions, and the acquisition of companies at different stages of organizational development, as well as organizational culture. Conclusion: Based on theoretical assumptions, the study analysed in details the components of knowledge management applied by the corporation in question. Therefore this study might be utilised to formulate a refutable hypothesis and verify them on a larger group of companies from different sectors of the economy. The main limitations of the paper are mostly related to the inherent approach therein
Keywords: knowledge, knowledge transfer, knowledge management, networks, case study analysis
Published in DKUM: 22.01.2018; Views: 1640; Downloads: 179
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Selection criteria for six sigma projects in Slovenian manufacturing companies
Dušan Gošnik, Matej Hohnjec, 2009, original scientific article

Abstract: Researches reveal that successful six sigma implementation is related to proper six sigma project prioritisation and selection. This research is limited to the selection of six sigma projects in some manufacturing companies in Slovenia. The purpose of this study is to identify what criteria are considered for prioritisation and selection of six sigma projects and how six sigma projects are selected. A research sample is limited by the number of companies which have implemented six sigma so far. The results indicate that Slovenian manufacturing organisations tend to select six sigma projects based on criteria such as customer satisfaction, connection with a business strategy financial benefits, and growth of the organisation. Several tools and techniques such as quality cost analysis, brainstorming and interviews are used to identify and prioritise projects. Identification of the most commonly used criteria to select six sigma projects can help practitioners to select projects based on multiple criteria by using tools and techniques identified in this study. This topic has not been applied in the field of Slovenian manufacturing companies and thus it presents the first study in this field in Slovenia.
Keywords: manufacturing, quality, six sigma, projects, management, case study, Slovenia
Published in DKUM: 22.01.2018; Views: 1170; Downloads: 362
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Industry 4.0 and the new simulation modelling paradigm
Blaž Rodič, 2017, original scientific article

Abstract: Background and Purpose: The aim of this paper is to present the influence of Industry 4.0 on the development of the new simulation modelling paradigm, embodied by the Digital Twin concept, and examine the adoption of the new paradigm via a multiple case study involving real-life R&D cases involving academia and industry. Design: We introduce the Industry 4.0 paradigm, presents its background, current state of development and its influence on the development of the simulation modelling paradigm. Further, we present the multiple case study methodology and examine several research and development projects involving automated industrial process modelling, presented in recent scientific publications and conclude with lessons learned. Results: We present the research problems and main results from five individual cases of adoption of the new simulation modelling paradigm. Main lesson learned is that while the new simulation modelling paradigm is being adopted by big companies and SMEs, there are significant differences depending on company size in problems that they face, and the methodologies and technologies they use to overcome the issues. Conclusion: While the examined cases indicate the acceptance of the new simulation modelling paradigm in the industrial and scientific communities, its adoption in academic environment requires close cooperation with industry partners and diversification of knowledge of researchers in order to build integrated, multi-level models of cyber-physical systems. As shown by the presented cases, lack of tools is not a problem, as the current generation of general purpose simulation modelling tools offers adequate integration options.
Keywords: simulation, modelling, automated modelling, Industry 4.0, Digital Twin, SME, multiple-case study
Published in DKUM: 30.11.2017; Views: 1503; Downloads: 484
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A best practice model for useful suggestions management
Igor Prodan, Branka Ahlin, 2008, original scientific article

Abstract: This paper presents the results of a research project financed by the Chamber of commerce and industry of Slovenia. The main purpose of the project was to propose a model for useful suggestions management, including concrete suggestions for businesses. This is based on (a) an in-depth literature review, (b) case studies of three innovative, export orientated Slovenian companies and (c) the results of the implementation of this model in two Slovenian companies (as a pilot project). Concrete suggestions for businesses regarding the useful suggestions management process, the implementation itself, the rewarding and monitoring of useful suggestions activity and potential adaptations of the model to changes within the company are presented. Since the paper focuses on the implementation of useful suggestions management, offering a rich insight into the concrete processes involved in both developing such policies and carrying them out, companies may achieve great business value by implementing this proposed model.
Keywords: management, proposals, models, case study, research
Published in DKUM: 28.11.2017; Views: 907; Downloads: 348
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The influence of non-formal artistic and creative activities in multicultural educational contexts
Fernando Pérez-Martin, 2017, original scientific article

Abstract: Our schools are becoming more and more multicultural every year. It is no longer uncommon to have in the same classroom students from over a dozen nationalities, with diverse backgrounds, beliefs and ways of seeing the world. This article is an invitation to reflect on the role that non-formal artistic and creative activities can play in multicultural educational settings. To this end, an excerpt from a Case Study carried out in one of Canada%s most multicultural schools is presented, showcasing some of the activities developed there and analysing the positive influences they have in its educational community.
Keywords: non-formal art, music education, Case Study research, creativity, multicultural education, Educational context
Published in DKUM: 16.11.2017; Views: 1286; Downloads: 351
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Business model innovation: insights from a multiple case study of Slovenian SMEs
Marjeta Marolt, Gregor Lenart, Damjan Maletič, Mirjana Kljajić Borštnar, Andreja Pucihar, 2016, original scientific article

Abstract: Background and Purpose: Business model innovation (BMI) has become increasingly important, especially in the fast changing business environment. While large enterprises approach these changes systematically, small and medium sized enterprises (SMEs) are left to their own resourcefulness. For the purpose of developing dedicated methods and tools to support different SMEs in addressing these challenges, we have conducted a multiple case study to gain insights into factors that drive SMEs to innovate their BM, how they approach BMI and what changes they made to their BM. Design/Methodology/Approach: First the framework of analysis was developed based on BMI research frameworks identified in literature review. Then the multiple case studies were conducted following the case study protocol developed by Envision project. Results: Based on the proposed framework the results of four Slovene SME cases revealed differences between enterprises regarding the drivers behind BMI and changes in usage of the different BMI elements. Conclusion: Overall, the results suggest all four SMEs, coming from different sectors, are facing BMI challenges without systematically addressing it and without using any dedicated BM ontologies or tools.
Keywords: business model, business model innovation, drivers of innovation, multiple case study
Published in DKUM: 03.04.2017; Views: 1553; Downloads: 401
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