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Prof. Dr. Janez Kušar
Faculty of mechanical engineering

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Research Keywords & Expertise

0 Concurrent Engineering
0 Production
0 Operation Research
0 project management
0 Planning and scheduling

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Production
project management
Concurrent Engineering

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Short Biography

Dr. Janez Kušar is an associate professor at the Faculty of Mechanical Engineering, University of Ljubljana. Currently, he is the head of Laboratory of Production systems. His research areas are production planning and control, material and information flow optimization, project management, concurrent engineering, and lean and agile production. He has published more than 35 scientific articles in impact factor journals.

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Journal article
Published: 21 January 2021 in Sustainability
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In this paper, we present the impact of concurrent engineering strategies, methods, and tools on product sustainability. Concurrent engineering can be used to achieve the primary goals of a product realization project: lower costs, shorter times, high quality, and increasing value. Currently, it is important that new products also meet product sustainability goals, such as economic, environmental, and social goals. The sustainability of a product can be influenced the most in the early stages of product development, so in this paper, we present a customized quality function deployment (QFD) method called the house of sustainability, which translates sustainability requirements into technical solutions for a product. A seven-step process for implementing a sustainable product realization project is also proposed, in which the house of sustainability is one of the most important tools. The proposed process is illustrated with an example of a concurrent product realization project in engineering to order production.

ACS Style

Lidija Rihar; Janez Kušar. Implementing Concurrent Engineering and QFD Method to Achieve Realization of Sustainable Project. Sustainability 2021, 13, 1091 .

AMA Style

Lidija Rihar, Janez Kušar. Implementing Concurrent Engineering and QFD Method to Achieve Realization of Sustainable Project. Sustainability. 2021; 13 (3):1091.

Chicago/Turabian Style

Lidija Rihar; Janez Kušar. 2021. "Implementing Concurrent Engineering and QFD Method to Achieve Realization of Sustainable Project." Sustainability 13, no. 3: 1091.

Journal article
Published: 06 November 2020 in Sustainability
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In today’s highly dynamic and unpredictable project environment, companies need to be able to manage changes quickly and effectively, otherwise, the final product will not be current and will only go to waste. Traditional project management approaches that focus on planning are no longer efficient and companies are forced to adopt new ways of working. As a result, more flexible agile project management (APM) approaches have emerged over the last decades. Originally developed for the software industry, APM is now increasingly recognized and adopted also by other industry sectors. However, due to some discipline-specific differences, the adoption of APM by non-software companies is challenging and requires many adjustments and high financial input. While the larger organizations have sufficient resources to make such a transition, small and medium-sized enterprises (SMEs) generally cannot afford to do so, and therefore need alternative strategies to increase their agility and stay competitive on the global market. In this paper, we present a case study of a Slovenian medium-sized manufacturing company that implemented only certain APM practices separately and not as part of a structured APM methodology, and still managed to achieve significant benefits: improved communication, faster detection of discrepancies, more effective problem-solving and greater flexibility. The results also suggest that APM practices, even when implemented separately, positively impact project success in terms of both efficiency and stakeholder satisfaction, and can thus help in establishing an economically, socially, and environmentally more sustainable workplace.

ACS Style

Tena Žužek; Žiga Gosar; Janez Kušar; Tomaž Berlec. Adopting Agile Project Management Practices in Non-Software SMEs: A Case Study of a Slovenian Medium-Sized Manufacturing Company. Sustainability 2020, 12, 9245 .

AMA Style

Tena Žužek, Žiga Gosar, Janez Kušar, Tomaž Berlec. Adopting Agile Project Management Practices in Non-Software SMEs: A Case Study of a Slovenian Medium-Sized Manufacturing Company. Sustainability. 2020; 12 (21):9245.

Chicago/Turabian Style

Tena Žužek; Žiga Gosar; Janez Kušar; Tomaž Berlec. 2020. "Adopting Agile Project Management Practices in Non-Software SMEs: A Case Study of a Slovenian Medium-Sized Manufacturing Company." Sustainability 12, no. 21: 9245.

Book chapter
Published: 25 September 2019 in Risk Management in Construction Projects
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This paper outlines a risk management method that is based on the use of a standard risk management model and is adapted to the specific nature of infrastructure projects. The standard model can be used to identify and quantify unexpected events in planning and executing a project. The use of a risk map will also be illustrated. A risk map can serve to classify the identified and quantified risk events, depending on the expected loss, to critical risks that call for a more in-depth treatment, and non-critical risks that are normally not monitored, while no measures are foreseen in advance. A risk map is used to determine what the anticipated effects of the measures to mitigate the critical risks will be, and how the anticipated measures enable the transition from a critical risk to a non-critical risk. In this article, the suggested risk management is illustrated using the example of the erection of a reservoir for a hydroelectric power plant. The use of the proposed tools for the identification, assessment, prioritisation, and management of risks proved highly successful. With the use of the proposed risk model, the critical risk events were lowered under the acceptable level of the expected losses.

ACS Style

Lidija Rihar; Tena Žužek; Tomaž Berlec; Janez Kušar. Standard Risk Management Model for Infrastructure Projects. Risk Management in Construction Projects 2019, 1 .

AMA Style

Lidija Rihar, Tena Žužek, Tomaž Berlec, Janez Kušar. Standard Risk Management Model for Infrastructure Projects. Risk Management in Construction Projects. 2019; ():1.

Chicago/Turabian Style

Lidija Rihar; Tena Žužek; Tomaž Berlec; Janez Kušar. 2019. "Standard Risk Management Model for Infrastructure Projects." Risk Management in Construction Projects , no. : 1.

Journal article
Published: 23 August 2019 in Applied Sciences
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Companies have to assure their share on the global market, meet customer demands and produce customer-tailored products. With time and production line updates, the layout becomes non-optimal and product diversity only increases this problem. To stay competitive, they need to increase their productivity and eliminate waste. Due to a variety of products consisting of similar components and variants thereof, a huge number of various elements are encountered in a production process, the material flow of which is hardly manageable. Although the elements differ from each other, their representative elements can be defined. This paper will illustrate a methodology for searching representative elements (MIRE), which is a combination of the known Pareto’s analysis (also known as ABC analysis or 20/80 rule) and a calculation of a loading function, that can be based on any element feature. Results of using the MIRE methodology in a case from an industrial environment have shown that the analysis can be carried out within a very short time and this provides for permanent analysis, optimisation and, consequently, permanent improvement in the material flow through a production process. The methodology is most suitable for smaller companies as it enables rapid analysis, especially in cases when there is no pre-recorded material flow.

ACS Style

Jure Murovec; Janez Kušar; Tomaž Berlec. Methodology for Searching Representative Elements. Applied Sciences 2019, 9, 3482 .

AMA Style

Jure Murovec, Janez Kušar, Tomaž Berlec. Methodology for Searching Representative Elements. Applied Sciences. 2019; 9 (17):3482.

Chicago/Turabian Style

Jure Murovec; Janez Kušar; Tomaž Berlec. 2019. "Methodology for Searching Representative Elements." Applied Sciences 9, no. 17: 3482.

Book chapter
Published: 21 June 2017 in Theory and Application on Cognitive Factors and Risk Management - New Trends and Procedures
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ACS Style

Lidija Rihar; Tomaž Berlec; Janez Kušar. Cognitive Factors and Risk Management of Concurrent Product Realisation. Theory and Application on Cognitive Factors and Risk Management - New Trends and Procedures 2017, 1 .

AMA Style

Lidija Rihar, Tomaž Berlec, Janez Kušar. Cognitive Factors and Risk Management of Concurrent Product Realisation. Theory and Application on Cognitive Factors and Risk Management - New Trends and Procedures. 2017; ():1.

Chicago/Turabian Style

Lidija Rihar; Tomaž Berlec; Janez Kušar. 2017. "Cognitive Factors and Risk Management of Concurrent Product Realisation." Theory and Application on Cognitive Factors and Risk Management - New Trends and Procedures , no. : 1.

Journal article
Published: 15 January 2014 in Strojniški vestnik – Journal of Mechanical Engineering
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ACS Style

Tomaž Berlec; Janez Kušar; Janez Žerovnik; Marko Starbek. Optimization of a Product Batch Quantity. Strojniški vestnik – Journal of Mechanical Engineering 2014, 60, 35 -42.

AMA Style

Tomaž Berlec, Janez Kušar, Janez Žerovnik, Marko Starbek. Optimization of a Product Batch Quantity. Strojniški vestnik – Journal of Mechanical Engineering. 2014; 60 (1):35-42.

Chicago/Turabian Style

Tomaž Berlec; Janez Kušar; Janez Žerovnik; Marko Starbek. 2014. "Optimization of a Product Batch Quantity." Strojniški vestnik – Journal of Mechanical Engineering 60, no. 1: 35-42.

Journal article
Published: 15 June 2013 in Strojniški vestnik – Journal of Mechanical Engineering
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ACS Style

Tomaž Berlec; Janez Kušar; Lidija Rihar; Marko Starbek. Selecting the Most Adaptable Work Equipment. Strojniški vestnik – Journal of Mechanical Engineering 2013, 57, 400 -408.

AMA Style

Tomaž Berlec, Janez Kušar, Lidija Rihar, Marko Starbek. Selecting the Most Adaptable Work Equipment. Strojniški vestnik – Journal of Mechanical Engineering. 2013; 57 (6):400-408.

Chicago/Turabian Style

Tomaž Berlec; Janez Kušar; Lidija Rihar; Marko Starbek. 2013. "Selecting the Most Adaptable Work Equipment." Strojniški vestnik – Journal of Mechanical Engineering 57, no. 6: 400-408.

Journal article
Published: 17 May 2013 in SpringerPlus
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Project management of product/service orders has become a mode of operation in many companies. Although these are mostly cyclically recurring projects, risk management is very important for them. An extended risk-analysis model for new product/service projects is presented in this paper. Emphasis is on a solution developed in the Faculty of Mechanical Engineering in Ljubljana, Slovenia. The usual project activities risk analysis is based on evaluation of the probability that risk events occur and on evaluation of their consequences. A third parameter has been added in our model: an estimate of the incidence of risk events. On the basis of the calculated activity risk level, a project team prepares preventive and corrective measures that should be taken according to the status indicators. An important advantage of the proposed solution is that the project manager and his team members are timely warned of risk events and they can thus activate the envisaged preventive and corrective measures as necessary.

ACS Style

Janez Kušar; Lidija Rihar; Urban Žargi; Marko Starbek. Extended risk-analysis model for activities of the project. SpringerPlus 2013, 2, 227 .

AMA Style

Janez Kušar, Lidija Rihar, Urban Žargi, Marko Starbek. Extended risk-analysis model for activities of the project. SpringerPlus. 2013; 2 (1):227.

Chicago/Turabian Style

Janez Kušar; Lidija Rihar; Urban Žargi; Marko Starbek. 2013. "Extended risk-analysis model for activities of the project." SpringerPlus 2, no. 1: 227.

Journal article
Published: 01 April 2013 in Strojniški vestnik – Journal of Mechanical Engineering
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ACS Style

Tomaž Berlec; Janez Kušar; Lidija Rihar; Marko Starbek. Selecting of the Most Adaptable Work Equipment. Strojniški vestnik – Journal of Mechanical Engineering 2013, 1 .

AMA Style

Tomaž Berlec, Janez Kušar, Lidija Rihar, Marko Starbek. Selecting of the Most Adaptable Work Equipment. Strojniški vestnik – Journal of Mechanical Engineering. 2013; ():1.

Chicago/Turabian Style

Tomaž Berlec; Janez Kušar; Lidija Rihar; Marko Starbek. 2013. "Selecting of the Most Adaptable Work Equipment." Strojniški vestnik – Journal of Mechanical Engineering , no. : 1.

Journal article
Published: 15 September 2012 in Strojniški vestnik – Journal of Mechanical Engineering
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ACS Style

Lidija Rihar; Janez Kušar; Stane Gorenc; Marko Starbek. Teamwork in the Simultaneous Product Realisation. Strojniški vestnik – Journal of Mechanical Engineering 2012, 58, 534 -544.

AMA Style

Lidija Rihar, Janez Kušar, Stane Gorenc, Marko Starbek. Teamwork in the Simultaneous Product Realisation. Strojniški vestnik – Journal of Mechanical Engineering. 2012; 58 (9):534-544.

Chicago/Turabian Style

Lidija Rihar; Janez Kušar; Stane Gorenc; Marko Starbek. 2012. "Teamwork in the Simultaneous Product Realisation." Strojniški vestnik – Journal of Mechanical Engineering 58, no. 9: 534-544.

Journal article
Published: 06 May 2004 in International Journal of Machine Tools and Manufacture
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The aim of the lead time scheduling of operations of orders is to define the starting and completion times of the planned operations involving either single-stage (parts) or multi-stage (subassembly parts) orders based on a previously determined time of starting and completion of a particular order. In this article, the role of the lead time scheduling of operations of orders within the whole production planning and control process is presented. Computer-aided procedures, needed to determine the real mean lead time of operations, and the real lead time scheduling of operations of orders are proposed. The results of determining mean lead times of operations, and the lead time scheduling of operations of orders, that was carried out in a company which produces equipment for civil engineering, are reported.

ACS Style

J Kuar; Janez Kušar; Aleš Brezovar; Janez Grum; Marko Starbek. Realistic lead time scheduling of operations of orders. International Journal of Machine Tools and Manufacture 2004, 44, 1037 -1046.

AMA Style

J Kuar, Janez Kušar, Aleš Brezovar, Janez Grum, Marko Starbek. Realistic lead time scheduling of operations of orders. International Journal of Machine Tools and Manufacture. 2004; 44 (10):1037-1046.

Chicago/Turabian Style

J Kuar; Janez Kušar; Aleš Brezovar; Janez Grum; Marko Starbek. 2004. "Realistic lead time scheduling of operations of orders." International Journal of Machine Tools and Manufacture 44, no. 10: 1037-1046.