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  • 251.
    Hanson, Lars
    et al.
    Lund University.
    Högberg, Dan
    Högskolan i Skövde, Institutionen för teknik och samhälle. Högskolan i Skövde, Forskningscentrum för Virtuella system.
    Lundström, Daniel
    Högskolan i Skövde.
    Wårell, Maria
    ArjoHuntleigh R&D Center, Lund.
    Application of Human Modelling in Health Care Industry2009Inngår i: Digital Human Modeling: Second International Conference, ICDHM 2009 Held as Part of HCI International 2009 San Diego, CA, USA, July 19-24, 2009 Proceedings / [ed] Vincent G. Duffy, Springer Berlin/Heidelberg, 2009, s. 521-530Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Digital human modelling (DHM) is commonly utilised for vehicle and workplace design in the automotive industry. More rarely are the tools applied in the health care industry, albeit having similar objectives for cost-efficiency and user-centred design processes. The paper illustrates how a DHM tool is modified and utilised to evaluate a bathing system design from caretakers' and caregivers' ergonomics point of view. Anthropometry, joint range of motion, description and appearance of the manikin was customised to meet the requirements in a health care setting. Furthermore, a preferred bathing posture was defined. A suggested DHM working process scenario illustrates that DHM tools can be customised, applied and useful in health care product design. Except technical customisations of the DHM tool, the development of a working process and work organisation around the tool is proposed for an effective and efficient use of digital human modelling.

  • 252.
    Hanson, Lars
    et al.
    Industrial Development, Scania CV AB, Södertälje, Sweden / Wingquist Laboratory, Chalmers University of Technology, Göteborg, Sweden.
    Högberg, Dan
    Högskolan i Skövde, Institutionen för teknik och samhälle. Högskolan i Skövde, Forskningscentrum för Virtuella system.
    Söderholm, M.
    Industrial Development, Scania CV AB, Södertälje, Sweden.
    Digital test assembly of truck parts with the IMMA-tool - an illustrative case2012Inngår i: Work: A journal of Prevention, Assesment and rehabilitation, ISSN 1051-9815, E-ISSN 1875-9270, Vol. 41, nr Suppl 1, s. 2248-2252Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Several digital human modelling (DHM) tools have been developed for simulation and visualisation of human postures and motions. In 2010 the DHM tool IMMA (Intelligently Moving Manikins) was introduced as a DHM tool that uses advanced path planning techniques to generate collision free and biomechanically acceptable motions for digital human models (as well as parts) in complex assembly situations. The aim of the paper is to illustrate how the IPS/IMMA tool is used at Scania CV AB in a digital test assembly process, and to compare the tool with other DHM tools on the market. The illustrated case of using the IMMA tool, here combined with the path planner tool IPS, indicates that the tool is promising. The major strengths of the tool are its user friendly interface, the motion generation algorithms, the batch simulation of manikins and the ergonomics assessment methods that consider time.

  • 253.
    Hanson, Robin
    et al.
    Institutionen för teknikens ekonomi och organisation, Logistik och transport, Chalmers.
    Brolin, Anna
    Högskolan i Skövde, Institutionen för teknik och samhälle. Högskolan i Skövde, Forskningscentrum för Virtuella system.
    A comparison of kitting and continuous supply in in-plant materials supply2011Inngår i: Proceedings from the 4th International Swedish Production Symposium, 2011, s. 312-321Konferansepaper (Fagfellevurdert)
  • 254.
    Hanson, Robin
    et al.
    Chalmers University of Technology.
    Brolin, Anna
    Högskolan i Skövde, Institutionen för teknik och samhälle. Högskolan i Skövde, Forskningscentrum för Virtuella system.
    A comparison of kitting and continuous supply in in-plant materials supply2013Inngår i: International Journal of Production Research, ISSN 0020-7543, E-ISSN 1366-588X, Vol. 51, nr 4, s. 979-992Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    In the context of in-plant materials supply, the materials feeding principle of kitting is often discussed as an alternative to the more common continuous supply (also known as line stocking). However, there are few detailed studies describing the relative effects of kitting and continuous supply. The current paper identifies the relative effects of kitting and continuous supply, and provides insight into how these effects arise. The paper draws on empirical data from two case studies in the Swedish automotive assembly industry. In each of the cases, continuous supply has been replaced by kitting, enabling comparison of kitting and continuous supply in the same production environment. The performance areas studied include man-hour consumption, product quality, flexibility, inventory levels, and space requirements. Interviews with production engineers, assemblers, and operators responsible for kit preparation at each company contribute to a broad yet detailed view of the relative effects of the two materials feeding principles.

  • 255.
    Harlin, Ulrika
    et al.
    Swerea IVF AB, Mölndal, Sweden / Product and Production Development Department, Chalmers University of Technology, Gothenburg, Sweden.
    Bäckstrand, Gunnar
    Högskolan i Skövde, Institutionen för teknik och samhälle. Swerea IVF AB, Mölndal, Sweden.
    Fässberg, Tommy
    Product and Production Development Department, Chalmers University of Technology, Gothenburg, Sweden.
    Brolin, Anna
    Högskolan i Skövde, Institutionen för teknik och samhälle. Högskolan i Skövde, Forskningscentrum för Virtuella system. Mechanical and Manufacturing Engineering, Loughborough University, Loughborough, Leicestershire, England.
    Gullander, Per
    Swerea IVF AB, Mölndal, Sweden.
    Production complexity and its impact on manning2011Inngår i: Manufacturing Sustainability: Proceedings of the 28th International Manufacturing Conference (IMC 28) / [ed] J. Geraghty, P. Young, 2011Konferansepaper (Fagfellevurdert)
  • 256.
    Harlin, Ulrika
    et al.
    Department of Product Realization, Swerea IVF AB, Sweden / Department of Product and Production development, Chalmers University, Sweden.
    Gullander, Per
    Department of Product Realization, Swerea IVF AB, Sweden.
    Bäckstrand, Gunnar
    Högskolan i Skövde, Institutionen för teknik och samhälle. Högskolan i Skövde, Forskningscentrum för Virtuella system. Department of Product Realization, Swerea IVF AB, Sweden.
    Thorvald, Peter
    Högskolan i Skövde, Institutionen för teknik och samhälle. Högskolan i Skövde, Forskningscentrum för Virtuella system.
    Moestam, Lena
    AB Volvo, Sweden.
    Flexible balancing of assembly systems and its impact on performance and human factors – a scenario-based analysis2013Inngår i: Proceedings of NES 2013, 45th Nordic Ergonomics & Human Factors Society conference, Iceland, August 2013, 2013Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Increased production complexity challenges traditional methods for planning  and  preparation  of  assembly.  This  paper  addresses alternative approaches for assembly line balancing and an assembly plant  area  was  studied  in  a  cross-disciplinary  scenario-based analysis. Results show that the complexity in products, operations, flow, and organisation increases setting new demands on developing line balancing methods, including meeting the requirements and understanding the impact, e.g. competences, organization, support functions. Further research is suggested for increase knowledge of what impact different line balancing concepts has on performance, human work and working conditions as well as development of strategies and guiding principles for dynamic planning.

  • 257.
    Hedenberg, Klas
    et al.
    Högskolan i Skövde, Institutionen för ingenjörsvetenskap. Högskolan i Skövde, Forskningscentrum för Virtuella system.
    Åstrand, Bjorn
    School of Information Technology, Halmstad University, Halmstad, Sweden.
    3D Sensors on Driverless Trucks for Detection of Overhanging Objects in the Pathway2016Inngår i: Autonomous Industrial Vehicles: From the Laboratory to the Factory Floor / [ed] Roger Bostelman, Elena Messina, West Conshohocken, PA: ASTM International, 2016, s. 41-56Kapittel i bok, del av antologi (Fagfellevurdert)
    Abstract [en]

    Human-operated and driverless trucks often collaborate in a mixed work space in industries and warehouses. This is more efficient and flexible than using only one kind of truck. However, because driverless trucks need to give way to driven trucks, a reliable detection system is required. Several challenges exist in the development of such a system. The first is to select interesting situations and objects. Overhanging objects are often found in industrial environments (e.g., tines on a forklift). Second is choosing a system that has the ability to detect those situations. (The traditional laser scanner situated two decimetres above the floor does not detect overhanging objects.) Third is to ensure that the perception system is reliable. A solution used on trucks today is to mount a two-dimensional laser scanner on top and tilt the scanner toward the floor. However, objects at the top of the truck will be detected too late, and a collision cannot always be avoided. Our aim is to replace the upper two-dimensional laser scanner with a three-dimensional camera, structural light, or time-of-flight (TOF) camera. It is important to maximize the field of view in the desired detection volume. Hence, the sensor placement is important. We conducted laboratory experiments to check and compare the various sensors' capabilities for different colors, using tines and a model of a tine in a controlled industrial environment. We also conducted field experiments in a warehouse. Our conclusion is that both the tested structural light and TOF sensors have problems detecting black items that are non-perpendicular to the sensor. It is important to optimize the light economy—meaning the illumination power, field of view, and exposure time—in order to detect as many different objects as possible.

  • 258.
    Hedenstierna, Philip
    Högskolan i Skövde, Institutionen för teknik och samhälle. Högskolan i Skövde, Forskningscentrum för Virtuella system.
    Applying Multi-Objective Optimisation to Dynamic Supply Chain Models2010Inngår i: Conradi Research Review, ISSN 1459-0980, Vol. 6, nr 2, s. 19-31Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Supply chains are complex industrial systems with several actors that strive towards different purposes. These systems are particularly sensitive to dynamic complexity and are popularly approached using system dynamics simulation. A common problem with system dynamics simulation is the inability to see directly how well a model with several objectives performs. This article suggests multi-objective optimisation as a means of analyzing dynamic supply chain models to (1) find Pareto-optimal parameter sets and (2) allow for comparison of different models by comparing Pareto fronts. Apart from discussing the application of multiobjective optimisation to dynamic supply chain problems, a supply chain model is optimized to give some insight about the benefits of using multi-objective optimisation for supply chain problems.

  • 259.
    Hedenstierna, Philip
    et al.
    Högskolan i Skövde, Forskningscentrum för Virtuella system.
    Hilletofth, Per
    Högskolan i Skövde, Forskningscentrum för Virtuella system. Högskolan i Skövde, Institutionen för teknik och samhälle.
    Hilmola, Olli-Pekka
    Lappeenranta University of Technology, Kouvola, Finland.
    An Integrative Approach To Inventory Control2009Inngår i: Rapid Modelling for Increasing Competitiveness: Tools and Mindset / [ed] Gerald Reiner, London: Springer London, 2009, s. 105-118Kapittel i bok, del av antologi (Annet vitenskapelig)
    Abstract [en]

    Inventory control systems consist of three types of methods: forecasting, safety stock sizing and order timing and sizing. These are all part of the interpretation of a planning environment to generate replenishment orders, and may consequently affect the performance of a system. It is therefore essential to integrate these aspects into a complete inventory control process, to be able to evaluate different methods for certain environments as well as for predicting the overall performance of a system. In this research a framework of an integrated inventory control process has been developed, covering all relations from planning environment to performance measures. Based on this framework a simulation model has been constructed; the objective is to show how integrated inventory control systems perform in comparison to theoretical predictions as well as to show the benefits of using an integrated inventory control process when evaluating the appropriateness of inventory control solutions. Results indicate that only simple applications (for instance without forecasts or seasonality) correspond to theoretical cost and service level calculations, while more complex models (forecasts and changing demand patterns) show the need for tight synchronization between forecasts and reordering methods. As the framework describes all relations that affect performance, it simplifies the construction of simulation models and makes them accurate. Another benefit of the framework is that it may be used to transfer simulation models to real-world applications, or vice versa, without loss of functionality.

  • 260.
    Hedenstierna, Philip
    et al.
    Högskolan i Skövde.
    Hilletofth, Per
    Högskolan i Skövde, Institutionen för teknik och samhälle. Högskolan i Skövde, Forskningscentrum för Virtuella system.
    Hilmola, Olli-Pekka
    Högskolan i Skövde, Institutionen för teknik och samhälle. Högskolan i Skövde, Forskningscentrum för Virtuella system.
    Design of a Framework for Inventory Control - Evaluation of Forecasting and Inventory Control Systems2009Inngår i: Flexible Automation and Intelligent Manufacturing 2009 (FAIM 2009) / [ed] Farhad Nabhani, Catherine Frost, Sara Zarei, Munir Ahmad, William G. Sullivan, Curran Associates, Inc., 2009, s. 573-580Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Managing inventories so that overall costs are kept low, while service levels are maintained is the central issue of inventory control, which only regulates two things: the size and the timing of orders. This is typically executed through a planning method, such as the reorder point system or, less frequently, the periodic order quantity system. These take into account a forecast, supposed to gauge the average future demand, and a predetermined safety stock, buffering against forecast errors and demand uncertainty. Pure demand also influences the system, as transactions affect the inventory level. It is crucial to understand how a complete system of demand, forecasts, safety stock calculations and planning methods work together to measure service level and overall cost of the system. This paper outlines a framework for the unambiguous representation of the relations between methods that interpret environmental parameters to plan orders. A number of simulations based on the framework are run to show, how the integration of the inventory control functions may affect the overall performance of the system. The usefullness of the framework lies in its ability to make a system duplicable (i.e. to transfer an inventory control system to a simulation model, or vice versa). Not only is this property important for creating simulation models that exactly depict the system being analysed, it also enables the study of a complete system for order planning, as opposed to optimising individual methods. Studying an inclusive system allow the same metrics to be used to evaluate changes to any method in the system. Another benefit of this approach is that the system's metrics directly reflect changes in the environment. Simulations based on this framework are precise and substantially easier to evaluate than models not adhering to any standard.

  • 261.
    Hedenstierna, Philip
    et al.
    Högskolan i Skövde, Institutionen för teknik och samhälle.
    Hilletofth, Per
    Högskolan i Skövde, Forskningscentrum för Virtuella system. Högskolan i Skövde, Institutionen för teknik och samhälle.
    Hilmola, Olli-Pekka
    Högskolan i Skövde. Lappeenranta University of Technology, Kouvola Research Unit, Kouvola, Finland.
    Integrative purchasing and inventory control at sawnwood retailer - case study2011Inngår i: International Journal of procurement management, ISSN 1753-8432, E-ISSN 1753-8440, Vol. 4, nr 2, s. 139-155Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Purchasing order methods and inventory control are vital elements in fulfilling customer orders and building internal performance; this is particularly the case in retailing operations. In this manuscript, we develop different scenarios for various order methods for a wood retailer, where the performance of the different methods is evaluated through simulation, whereupon the fit between environments and methods is compared. Our results indicate that only simple environments follow analytical cost and service level calculations, while increasing complexity increases the synchronisation need between forecasts and reordering methods. In our research we also compare different ordering methods, and find that while the reorder point method is the most robust solution from the retailer’s perspective, it could lead to distortion within entire wood supply chain.

  • 262.
    Hedenstierna, Philip
    et al.
    Högskolan i Skövde, Institutionen för teknik och samhälle. Högskolan i Skövde, Forskningscentrum för Virtuella system.
    Ng, Amos H. C.
    Högskolan i Skövde, Institutionen för teknik och samhälle. Högskolan i Skövde, Forskningscentrum för Virtuella system.
    On the placement of the customer order decoupling point2010Inngår i: Proceedings of 2010 8th International Conference on Supply Chain Management and Information Systems: Logistics Systems and Engineering, Hong Kong: The Hong Kong Polytechnic University , 2010, s. Article number 5681729-Konferansepaper (Fagfellevurdert)
    Abstract [en]

    It is often suggested that supply chains should start working directly towards customer orders as far upstream as possible, mostly for inventory reduction reasons. However, the customer order decoupling point (CODP) cannot be pushed further upstream than customers are willing to wait. In this paper, we use a system dynamics model to show that the optimal placement of the CODP depends on the demand signal. Our findings indicate that placing the CODP downstream allows for short-term fluctuations in demand to be absorbed by the order book, leading to a stable production rate. This benefit must however be weighed against any additional safety stock a CODP placed far downstream may require.

  • 263.
    Hedenstierna, Philip
    et al.
    Högskolan i Skövde, Institutionen för teknik och samhälle. Högskolan i Skövde, Forskningscentrum för Virtuella system.
    Ng, Amos H.C.
    Högskolan i Skövde, Institutionen för teknik och samhälle. Högskolan i Skövde, Forskningscentrum för Virtuella system.
    Dynamic implications of customer order decoupling point positioning2011Inngår i: Journal of Manufacturing Technology Management, ISSN 1741-038X, E-ISSN 1758-7786, Vol. 22, nr 8, s. 1032-1042Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Purpose: The positioning of the customer order decoupling point (CODP) is an important strategic consideration for supply chains. Recently, research has focused only on the static effects of CODP positioning. The purpose of this paper is to expand the body of knowledge by describing the dynamic consequences that arise from shifting the CODP upstream or downstream.

    Design/methodology/approach: A generic assembly-to-order system dynamics simulation model is developed and used to evaluate the dynamic consequences of shifting the CODP.

    Findings: Placing the CODP downstream allows for short-term fluctuations in demand to be absorbed by the order book, leading to a stable production rate and inventory response. This benefit must, however, be weighed against any additional safety stock a CODP placed far downstream may require.

    Research limitations/implications: The paper demonstrates the importance of considering the dynamic aspects of CODP positioning. Further research should investigate the phenomenon for different demand scenarios and supply chain configurations.

    Practical implications: Downstream shifting of the CODP has been identified as a powerful way to reduce variability in assembly-to-order systems.

    Originality/value: This paper introduces the dynamic consequences of CODP location, providing a new perspective that should be considered when positioning the CODP.

  • 264.
    Hilletofth, Per
    Högskolan i Skövde, Forskningscentrum för Virtuella system. Högskolan i Skövde, Institutionen för teknik och samhälle.
    Demand-Supply Chain Management2010Doktoravhandling, med artikler (Annet vitenskapelig)
    Abstract [en]

    Purpose: This research aims to enhance the current understanding and knowledge of the demand-supply chain management (DSCM) concept by determining its elements, benefits, and requirements, as well as by analyzing key elements of the concept. Methodology: This research has utilized the case study strategy and the survey strategy, however, the case study strategy dominates. The case study research has involved five companies originating from Sweden and the collection of empirical data mainly from in-depth interviews with key persons representing senior and middle management. The survey research targeted the largest firms in Sweden and Finland and empirical data was collected through an online questionnaire. Findings: This research has established that the main elements of DSCM include market orientation, coordination of the demand and supply processes, viewing the demand and supply processes as being equally important, as well as value creation, differentiation, innovativeness, responsiveness, and cost-efficiency in the demand and supply processes. It has also been revealed that the main benefits of DSCM include enhanced competiveness, enhanced demand chain performance, as well as enhanced supply chain performance, while the main requirements of DSCM include organizational competences, company established principles, demand-supply chain collaboration, and information technology support. A key element of DSCM further investigated is differentiation focused supply chain design. It has been shown that these efforts can be organized into a process of five stages. In addition, it is important that this process is addressed in parallel with the new product development (NPD) process, that information is exchanged between them, and that they are directed on the basis of the same segmentation model. Another key element of DSCM further investigated is coordination between NPD and SCM. This research has identified several significant linkages between these management directions, which motivate the use of an integrative NPD process where the NPD functions are aligned with the main supply functions in the company and other sales-related functions supporting the commercialization. A final key element of DSCM further investigated is the significance of regarding the demand processes and the supply processes as being equally important. This research has revealed that logistics outsourcing can be risky, if it results in the supply processes being considered less important. Nevertheless, if senior management regards the outsourced processes as equally important as the in-house processes, the effect of logistics outsourcing on company strategies and direction in SCM could be reduced and logistics outsourcing could instead provide an opportunity to improve the design and differentiation of the supply chain. Research limitations/implications: This research has proposed, described, and further analyzed a demand-supply oriented management approach. Such a management approach stresses that the demand processes and the supply processes have to be coordinated and directed at an overlying level, in order to gain and sustain a competitive advantage in competitive and fragmented markets. This research is mainly explorative in nature, and more empirical data, from similar and other research settings, is needed to further validate the findings. Another limitation of the research is that it is essentially limited to Swedish companies (even if some Finnish companies are involved in the survey), however, many of the case companies have a large international presence and are among the top three in their industries, facts which provide some grounds for generalization. Practical implications: This research provides researchers and practitioners with insights into how to develop a demand-supply oriented business. It shows that companies should organize themselves around understanding how customer value is created and delivered, as well as how these processes and management directions can be coordinated. In order for this to occur, the demand and supply processes must be considered as being equally important and the firm needs to be managed jointly and in a coordinated manner by the demand- and supply-side of the company. It is also important that value creation is considered in both the demand and supply processes. Originality/value: Despite strong arguments from both researchers and practitioners for a demand-supply oriented management approach only a minority of companies appear to have effectively coordinated the demand and supply processes. This might be influenced by the lack of research examining how the demand and supply processes can be coordinated, what benefits can be gained by coordinating them, and what requirements are necessary to succeed. This research contributes by investigating these types of aspects further.

  • 265.
    Hilletofth, Per
    Högskolan i Skövde, Forskningscentrum för Virtuella system. Högskolan i Skövde, Institutionen för teknik och samhälle.
    Demand-supply chain management: industrial survival recipe for new decade2011Inngår i: Industrial management + data systems, ISSN 0263-5577, E-ISSN 1758-5783, Vol. 111, nr 2, s. 184-211Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Purpose – The purpose of this paper is to enhance the current understanding and knowledge of the demand-supply chain management (DSCM) concept by determining its elements, benefits, and requirements, and by illustrating its occurrence in practice.

    Design/methodology/approach – This research has utilized a literature and case study research strategy. The case study has involved an international manufacturing company from the appliance industry. Empirical data have been collected mainly from in-depth interviews with key persons representing senior and middle management in the case organization.

    Findings – This research has established that the main elements of DSCM include market orientation, coordination of the demand and supply processes, viewing the demand and supply processes as being equally important, as well as value creation, differentiation, innovativeness, responsiveness, and cost efficiency in the demand and supply processes. It has also been revealed that the main benefits of DSCM include enhanced competitiveness, enhanced demand chain performance, and enhanced supply chain performance, while the main requirements of DSCM include organizational competences, company-established principles, demand-supply chain collaboration, and information technology support.

    Research limitations/implications – This research is explorative in nature, and more empirical data, from similar and other research settings, are needed to further validate the findings. Another limitation of the research is that it is limited to one Swedish company; however, the involved case company has a large international presence and is among the top three in its industry, which provides some ground for the generalization. A final limitation of the research is that the involved company only represents one industry.

    Practical implications – This paper provides insights useful to researchers and practitioners on how to develop a demand-supply oriented business. It highlights that firms should organize themselves around understanding how customer value is created and delivered and how these processes and management directions can be coordinated. The demand and supply processes have to be considered as equally important and the firm needs to be managed by the demand side and supply side of the company jointly in a coordinated manner.

    Originality/value – The need to coordinate the demand and supply processes has been emphasized in both the demand and supply chain literature but still remained relatively unexplored; thus, this paper contributes by investigating this matter further.

  • 266.
    Hilletofth, Per
    Högskolan i Skövde, Institutionen för teknik och samhälle. Högskolan i Skövde, Forskningscentrum för Virtuella system.
    How to develop a differentiated supply chain strategy2009Inngår i: Industrial management + data systems, ISSN 0263-5577, E-ISSN 1758-5783, Vol. 109, nr 1, s. 16-33Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Purpose – The purpose of this paper is to contribute to the understanding of supply chain (SC) design and operation by investigating how two case companies have developed and deployed differentiated SC strategies. This study primarily focuses on the operating part of the differentiated SC strategy, that is, how different manufacturing strategies – such as make-to-stock, assembly-to-order, and make-to-order – are used in contemporary manufacturing related SCs. However, this study also includes elements concerning supply and distribution parts.Design/methodology/approach – This study employs a descriptive multiple case study approach. The case organizations originate from Sweden, but they have significant international presence. Empirical data have been collected mainly from in-depth interviews with key persons representing senior and middle management in the case companies.Findings – This research shows how two case companies have developed and deployed a differentiated SC strategy. The case study findings reveal that both the case companies already are employing several manufacturing strategies and also combine these with different distribution strategies. Up to now, the supply part of the differentiated SC strategy has been neglected but probably will be incorporated in the near future. This implies that one efficient way to develop a differentiated SC strategy could be to combine different supply, manufacturing and distribution strategies into various SC solutions. By combining relatively few strategies, it is possible to develop several differentiated SC solutions.Research limitations/implications – The research work is limited to Swedish companies, however, the case companies are in top three in their respective industries measured by sales, which provides ground for the generalization of the research.Practical implications – This paper gives an insight to managers and practitioners in how to develop and deploy a differentiated SC strategy.Originality/value – Several studies have discussed the appropriate SC strategy issue but failed to address the need to utilize several SC solutions concurrently. However, this paper contributes by discussing how to develop and deploy a differentiated SC strategy and how to manage these multiple SCs.

  • 267.
    Hilletofth, Per
    et al.
    Högskolan i Skövde, Institutionen för teknik och samhälle. Högskolan i Skövde, Forskningscentrum för Virtuella system.
    Aslam, Tehseen
    Högskolan i Skövde, Institutionen för teknik och samhälle. Högskolan i Skövde, Forskningscentrum för Virtuella system.
    Hilmola, Olli-Pekka
    Högskolan i Skövde, Institutionen för teknik och samhälle. Högskolan i Skövde, Forskningscentrum för Virtuella system. Lappeenranta University of Technology, Kouvola Research Unit, Kouvola, Finland.
    Multi-agent-based supply chain management: a case study of requisites2010Inngår i: International Journal of Networking and Virtual Organisations, ISSN 1470-9503, E-ISSN 1741-5225, Vol. 7, nr 2/3, s. 184-206Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Supply Chains (SCs) are becoming increasingly complex, and intensified competition in the end markets has started to create a situation where cooperation requirements between companies are increasing, and old mechanistic operations management solutions are becoming obsolete. In this paper we analyse a real-life situation in Alpha’s manufacturing plant in Sweden, which serves northern European countries in consumer markets. Case study findings reveal that the product-mix flexibility requirements are high and lead-time requirements in manufacturing as well as purchasing take weeks or months, not days. Based on the empirical observations, we propose an agent system for this company and discuss different levels of decision making, operative responsibilities and decision time horizons.

  • 268.
    Hilletofth, Per
    et al.
    Högskolan i Skövde, Forskningscentrum för Virtuella system. Högskolan i Skövde, Institutionen för teknik och samhälle.
    Claesson, Frida
    Högskolan i Skövde, Institutionen för teknik och samhälle.
    Hilmola, Olli-Pekka
    Lappeenranta University of Technology, Kouvola, Finland.
    In-Transit Distribution Strategy: Hope for European Factories?2010Inngår i: Rapid Modelling and Quick Response: Intersection of Theory and Practice / [ed] Gerald Reiner, Springer London, 2010, s. 249-261Konferansepaper (Fagfellevurdert)
    Abstract [en]

    In this research the in-transit distribution strategy is investigated by determining and analyzing key principles of the strategy. It is examined through a multiple case study and simulation. This research reveals that the in-transit distribution strategy is about considering goods that are being transported as a mobile inventory and actively dispatching goods to a destination, where there is a predicted demand before any customer orders are received. It can give major competitive advantages by offering rather short lead-times for customers without having to store products locally. This, in turn, gives lower warehousing costs, lower tied-up capital, a less interrupted manufacturing, and steady as well as continous production volumes. It is a workable solution for European manufactures competing in distant market. To be successful with this strategy, it takes good planning, working closely with customers, first-class market kowledge, and a supporting enterprise resource planning (ERP) system. Other highlighted requirements are low variation in demand and predictable distribution lead-time. Simulation study of one hypothetical product group verified case study findings, but we find it interesting that especially manufacturing output variance is very sensitive regarding the overall results. Also increasing average customer demand results in undesired outcomes.

  • 269.
    Hilletofth, Per
    et al.
    Högskolan i Skövde, Institutionen för teknik och samhälle. Högskolan i Skövde, Forskningscentrum för Virtuella system.
    Ericsson, Dag
    University of Borås.
    Christopher, Martin
    Cranfield University.
    Demand chain management: a Swedish industrial case study2009Inngår i: Industrial management + data systems, ISSN 0263-5577, E-ISSN 1758-5783, Vol. 109, nr 8-9, s. 1179-1196Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Purpose - The purpose of this paper is to increase the understanding of demand chain management (DCM) by investigating how it has been structured and executed in an international manufacturing company. Design/methodology/approach - The main emphasis has been on producing descriptive results and the applied research strategy has been an embedded single case study. The case organization originates from Sweden, but it has significant international presence. Empirical data have been collected mainly from in-depth interviews with key persons representing senior management in the case company.Findings - This research shows that DCM is about developing synergies between the demand creation and the demand fulfillment processes. A completely implemented DCM approach should incorporate all the major demand creation and fulfillment processes. This kind of fully implemented approach probably does not exist in real life today but some companies have started to develop versions including some of the major processes, and this research provides an example of this. The ultimate goal of DCM is to gain competitive advantages by differentiating not only the products, but also the delivery process. This is necessary in markets characterized of intensive competition, high product variety, large amount of customer-adapted products, and short product life cycles. It can be concluded that DCM is not another name for demand driven supply chains (SCs) or a fad. It is rather a way to finally benefit from decade long marketing discussions on how to achieve customer focus. It highlights the interplay between marketing and supply chain management (SCM) as an enabler of value creation.Research limitations/implications - This research work is limited to one Swedish company; however the case company has large international presence and is in top three in their industry measured by sales, which provides some ground for the generalization of the research. Practical implications - This paper gives an insight for managers and practitioners to the value of coordinating marketing and SCM to develop a truly customer-driven organization and SC. Originality/value - Several studies have addressed the synergies between marketing and SCM but failed to address how to in some detail realize this in practice. This paper contributes by discussing how to realize this coordination in practice.

  • 270.
    Hilletofth, Per
    et al.
    Högskolan i Skövde, Forskningscentrum för Virtuella system. Högskolan i Skövde, Institutionen för teknik och samhälle.
    Ericsson, Dag
    School of Engineering, University College of Borås, Sweden.
    Hilmola, Olli-Pekka
    Lappeenranta University of Technology, Kouvola, Finland.
    Hedenstierna, Philip
    Högskolan i Skövde.
    New Product Development in a Manufacturing Company - A Challenge for Supply Chain Management2009Inngår i: Proceedings of the 19th International Conference on Flexible Automation and Intelligent Manufacturing / [ed] Farhad Nabhani, Teesside University , 2009, s. 1169-1177Konferansepaper (Fagfellevurdert)
    Abstract [en]

    The last decades a new type of business environments has evolved characterized by rapid and volatile demand changes, short product life cycles, and high levels of customized products. The competitiveness of a business in these environments is mostly determined by its responsiveness. This is characterized by the ability to quickly scale up or down the production volume, the presence of an innovative and fast product development, and the quick incorporation of customer requirements into the product development. This paper employs a descriptive single case study approach to illustrate how product development is structured and executed in an international manufacturing company, seeking to realize an innovative, predictable, and efficient product development. The objective is to increase the understanding of how product development and product life-cycles are connected to Supply Chain Management (SCM). Case study findings reveal that the case company after implementing a strategic and structured Product Creation Process (PCP) has improved the efficiency and effectiveness of product development. Findings also reveal that the case company has not yet developed any linkages between product development and SCM. Still, the case company has become aware of this issue due to problems associated with the lack of integration between product development and SCM.

  • 271.
    Hilletofth, Per
    et al.
    Högskolan i Skövde, Forskningscentrum för Virtuella system. Högskolan i Skövde, Institutionen för teknik och samhälle.
    Ericsson, Dag
    University of Borås.
    Lumsden, Kenth
    Chalmers University of Technology.
    Coordinating new product development and supply chain management2010Inngår i: International Journal of Value Chain Management, ISSN 1741-5357, Vol. 4, nr 1/2, s. 170-192Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Effective implementation of the new product development (NPD) process not only enables management to coordinate the efficient flow of new products, but will also assist to support ramp-up of various supply chain activities and other related activities supporting the commercialisation of the product. Thus, companies need to address all these issues in parallel to be successful and this requires some kind of integrative product development approach. The purpose of this research is to increase the understanding of how NPD is connected to supply chain management (SCM) by investigating how the NPD process is structured and executed in two international manufacturing companies seeking to realise an innovative, predictable and efficient product development. Several essential linkages between NPD and SCM have been derived from case study findings concerning important issues for successful product development.

  • 272.
    Hilletofth, Per
    et al.
    Högskolan i Skövde, Forskningscentrum för Virtuella system. Högskolan i Skövde, Institutionen för teknik och samhälle.
    Eriksson, David
    School of Engineering, University of Borås, Borås, Sweden.
    Coordinating new product development with supply chain management2011Inngår i: Industrial management + data systems, ISSN 0263-5577, E-ISSN 1758-5783, Vol. 111, nr 2, s. 264-281Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Purpose – The purpose of this paper is to form an understanding of how new product development (NPD) relates to supply chain management (SCM), why the two fields should be coordinated, and how this may be done.

    Design/methodology/approach – This research uses a literature review and case study research. The case study considers a Swedish company that operates on a global basis in the furniture industry. Empirical data have been collected mainly from in-depth interviews with key persons representing senior and middle management in the case company.

    Findings – This paper stresses the need to produce innovative, value-adding products, as well as the necessity to quickly deliver them to the market. Companies that face mature business environments may encounter problems due to a high emphasis on either the value-creation processes, or on the value delivery processes. Therefore, NPD activities need to be coordinated with SCM activities on a strategic level, lest competitiveness will be lost.

    Research limitations/implications – The research is limited to one case company; replication studies would enhance understanding of the studied phenomenon. There is a wide need for research exploring how various parts of demand and supply chains should be managed in order to fully utilize the advantages of the consumer-oriented enterprise.

    Practical implications – This paper provides insights for researchers and practitioners on how to coordinate and balance NPD (demand side) with SCM (supply side) activities. It highlights that companies should organize themselves around understanding how consumer value is created and how these processes may be coordinated to provide that value. The two processes must be given equal attention and importance to avoid sub-optimization.

    Originality/value – The need for coordinating NPD and SCM activities has been emphasized in the literature but still remains relatively unexplored. This paper contributes by investigating this issue further.

  • 273.
    Hilletofth, Per
    et al.
    Högskolan i Skövde, Forskningscentrum för Virtuella system. Högskolan i Skövde, Institutionen för teknik och samhälle.
    Hilmola, Olli-Pekka
    Högskolan i Skövde, Forskningscentrum för Virtuella system. Högskolan i Skövde, Institutionen för teknik och samhälle.
    ERP Training through Traditional and Intensive Course Formats2009Inngår i: Networked Logistics and Production at South-East Finland, St Petersburg and Leningrad Oblast / [ed] Olli-Pekka Hilmola & Eugene Korovyakovsky, Lappeenranta University of Technology , 2009, s. 145-166Kapittel i bok, del av antologi (Annet vitenskapelig)
    Abstract [en]

    Nowadays Enterprise Resource Planning (ERP) systems have a important role in the performance improvement and control of a company and its entire supply chain. Therefore, this system is a vital part of a company’s competitiveness and new approaches for learning are needed to be developed in order to provide knowledge and skills in faster and more efficient manner for employees. Our aim in this manuscript is it to show, how ERP systems could be incorporated in the logistics courses of a university. This environment provides good platform to test new course formats, since most of the university students do not have any previous experience with these systems.

    In this research the structure and contents regarding ERP system usage in certain courses in the logistics curriculum at a Swedish University are being presented. Essentially, a traditional approach, where computer sessions are incorporated in ordinary courses are compared to a new intensive and flexible course format entirely dedicated to ERP systems. Additionally, the two utilized approaches are analyzed through student evaluations based on courses arranged during year 2008.

    Research shows that both of the approaches offer good opportunities; the students appreciated the traditional approach, since it allowed them to receive both theoretical and practical knowledge and skills, while they felt the intensive to be beneficial in developing practical side further. Consequently, the best alternative could be to utilize both of these formats. Still, this research shows that skilled responsible lecturer, among intensive course setting, is quite possibly one route for faster learning and higher productivity oflecturing.

  • 274.
    Hilletofth, Per
    et al.
    Högskolan i Skövde, Forskningscentrum för Virtuella system. Högskolan i Skövde, Institutionen för teknik och samhälle.
    Hilmola, Olli-Pekka
    Högskolan i Skövde, Institutionen för teknik och samhälle. Lappeenranta University of Technology, Kouvola Research  Unit, Kouvola, Finland.
    Role of Emerging Markets in Demand-Supply Chain Management2010Inngår i: Proceedings of the 15th annual Cambridge International Manufacturing Symposium: Innovation in global manufacturing - New models for sustainable value capture / [ed] Mike Gregory, Jagjit Singh Srai, Yongjiang Shi, Cambridge: University of Cambridge, Institute for Manufacturing , 2010, s. 1-16Konferansepaper (Fagfellevurdert)
    Abstract [en]

    This research aims to enhance the current understanding and knowledge of the demand-supply chain management (DSCM) concept by determining its elements, benefits, and requirements, and by illustrating its occurrence in practice. In addition, it aims to shed light on the role of emerging markets in this management approach. We examine DSCM through thorough literature review, analyze second hand financial data from world-class actors, and provide single case study analysis from Swedish manufacturing company operating on an international basis in the appliance industry. This research has established that the main elements of DSCM include market orientation, coordination of the demand and supply processes, viewing the demand and supply processes as equally important, value creation in the demand and supply processes, differentiation in the demand and supply processes, innovativeness in the demand and supply processes, responsiveness in the demand and supply processes, and cost-efficiency in the demand and supply processes. Furthermore, it has been revealed that the main benefits of DSCM include enhanced competiveness, enhanced demand chain performance, and enhanced supply chain performance. Moreover, it has been shown that the main requirements of DSCM include organizational competences, company established principles, demand-supply chain collaboration, and information technology support. Research also shows that emerging markets are used significantly to lower costs in the sourcing and manufacturing parts of the supply chain. Based on case study DSCM approach with long implementation time and increased costs (of marketing and product development) will lead into situation, where emerging low cost producers in markets have even higher responsibility from brand supplies, so instead of component production larger entities are in their responsibility. However, this offshoring will occur only in limited extent – significant manufacturing activity of DSCM companies still remains near of most important markets, like Europe.

  • 275.
    Hilletofth, Per
    et al.
    Högskolan i Skövde, Forskningscentrum för Virtuella system. Högskolan i Skövde, Institutionen för teknik och samhälle.
    Hilmola, Olli-Pekka
    Lappeenranta University of Technology, Kouvola Research Unit (Finland), Kouvola, Finland.
    Role of logistics outsourcing on supply chain strategy and management: Survey findings from Northern Europe2010Inngår i: Strategic Outsourcing, ISSN 1753-8297, E-ISSN 1753-8300, Vol. 3, nr 1, s. 46-61Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Purpose – The purpose of this paper is to investigate the effects of logistics outsourcing in Northern Europe through survey research. Research work intends to shed more light on logistics outsourcing with other than case-based company examples.

    Design/methodology/approach – Survey was completed during late 2007 and early 2008 in Finland and Sweden for the largest companies in industrial and service sectors. Altogether 34 answers were received, and they were gained mostly from industrial and trading companies.

    Findings – The research results show that warehousing, IT, and customs brokerage outsourcing could have impact on some managerial and strategic aspects of supply chains (SC). Thus, none of the identified difference areas was found to be statistically significant. Potential impact areas of SC strategy and management are integrated IT systems of manufacturing and logistics, reverse logistics procedures, and re-engineering of logistics processes. However, research shows that in-house produced IT function, and potentially outsourced warehousing, have important roles in more international purchasing.

    Research limitations/implications – Altogether, the amount of responses in the survey was relatively low, but treating Finnish and Swedish companies as one group gives us some opportunity for statistical analysis. This grouping might be one limiting factors of our study, and especially in its generalization power; however, our earlier analysis with the data shows that these countries operate in a rather similar interest area. Another limiting factor of our research findings is the difference in respondent profiles – operating principles of logistics and trade companies are different as compared to manufacturing.

    Practical implications – Research shows that IT is potentially having an important role in both, international purchasing emphasis as well as on warehousing outsourcing activities. Contrary to the common view, this research gives some indication that in-house IT is valuable, and more integrated applications are needed for example, when warehousing is being outsourced.

    Originality/value – This is one of the seminal research works regarding North European outsourcing practices, and their affects on SC strategies and management. Both of the countries have an advanced industrial sector, which gives perspective for the readers world wide.

     

     

     

     

     

     

     

     

  • 276.
    Hilletofth, Per
    et al.
    Högskolan i Skövde, Forskningscentrum för Virtuella system. Högskolan i Skövde, Institutionen för teknik och samhälle.
    Hilmola, Olli-Pekka
    Lappeenranta University of Technology.
    Claesson, Frida
    Högskolan i Skövde, Institutionen för teknik och samhälle.
    In-transit distribution strategy: solution for European factory competitiveness?2011Inngår i: Industrial management + data systems, ISSN 0263-5577, E-ISSN 1758-5783, Vol. 111, nr 1-2, s. 20-40Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Purpose – Research work describes in-transit distribution strategy by determining and analyzing key principles of it as well as by illustrating its application in practice. Emphasis on in-transit distribution strategy is to turn transportation pipeline as a mobile inventory holding place, and actively dispatching goods to a destination, where there is a predicted demand before any customer orders are actually received. The use of this strategy is supported by current trade flows: emerging market trade has increased considerably, but simultaneously Swedish export prices, for example, have significantly decreased. The paper aims to address this issue.

    Design/methodology/approach – In-transit strategy is examined through a multiple case study from industrial companies having main factory operations in Sweden as well as using a system dynamics simulation model, and Monte Carlo analysis. These are supported by the second hand data of trade flows between Sweden, and India and China.

    Findings – In order to be successful with in-transit strategy, the case studies show that excellent planning, working closely with customers, first-class market knowledge, and an enterprise resource planning (ERP) system that is able to support the process sufficiently are required. Other highlighted requirements of this strategy are low variation in demand, and predictable distribution lead-time. Simulation study of one hypothetical product group verified case study findings, but the authors find it interesting that manufacturing output variance especially is very sensitive regarding to the overall results. If variation increases, then in-transit strategy is not able to deliver for customers with the necessary accuracy. Also increasing average customer demand, and longer transportation delays lead to undesired outcomes (e.g. too much inventory or out of stock situations).

    Research limitations/implications – The case study and second hand analysis is limited to one country, and further evidence is needed from other European, and possibly North American companies, to verify these findings.

    Originality/value – There has been a rather limited amount of research works completed from the use of in-transit strategy, even if increased trade activity and lower price of exported items is that of the old west in their exports to emerging markets, and continues to be so in the future (was even strong to China during credit crunch year 2009). Our research is seminal in terms of a developed system dynamics simulation model.

  • 277.
    Hilletofth, Per
    et al.
    Högskolan i Skövde, Forskningscentrum för Virtuella system. Högskolan i Skövde, Institutionen för teknik och samhälle.
    Hilmola, Olli-Pekka
    Lappeenranta University of Technology, Kouvola, Finland.
    Ujvari, Sandor
    Högskolan i Skövde, Forskningscentrum för Virtuella system. Högskolan i Skövde, Institutionen för teknik och samhälle.
    Teaching ERP in logistics curriculum: a case experience from Sweden2010Inngår i: International Journal of Business Information Systems, ISSN 1746-0972, E-ISSN 1746-0980, Vol. 6, nr 3, s. 295-314Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The use of ERP systems in business is commonplace and often a requirement for rapid and efficient operations. The presence of ERP in higher education can be seen as a prerequisite for students to achieve necessary skills and knowledge, but how can the education be achieved in a better way? In this research, the use of ERP systems as a part of two courses of the logistics curriculum in higher education at a Swedish University are presented and analysed. The traditional approach of teaching logistics, where computer sessions are incorporated in ordinary courses, is being compared to a new intensive and flexible course format dedicated entirely to ERP education with a stronger focus on problem-oriented learning. The results show that both approaches offer opportunities, the traditional approach allows students to receive both theoretical and practical knowledge and skills, while the intensive approach provides them with significant practical knowledge and skills. This research results leaves us arguing that the best combination is to utilise both approaches to establish the needed basis for curriculum.

  • 278.
    Hilletofth, Per
    et al.
    Högskolan i Skövde, Forskningscentrum för Virtuella system. Högskolan i Skövde, Institutionen för teknik och samhälle.
    Jäger, Kerstin
    Högskolan i Skövde, Forskningscentrum för Virtuella system. Högskolan i Skövde, Institutionen för teknik och samhälle.
    The role of logistics service providers in the implementation of a differentiated supply chain2011Inngår i: International Journal of Shipping and Transport Logistics, ISSN 1756-6517, E-ISSN 1756-6525, Vol. 3, nr 2, s. 151-167Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    This research investigates the role of logistics service providers in the implementation of a differentiated supply chain. The issue is examined through a multiple case study combined with a literature review. The research shows that logistics service providers can support companies with the implementation of a differentiated supply chain in sourcing and distribution parts by providing services that the company is incapable to provide, by providing certain services more efficiently or by providing complementing services. In some situations, the logistics service provider is even responsible for the entire implementation and should continuously develop the logistics process and customised service according to the company’s market situation. Eurasian transportation flows are nowadays an important part of most supply chains and needs to be considered in this differentiation work. Logistics service providers operating in these flows can support the differentiation by providing more customised and differentiated transportation services and there is a demand for more transportation alternatives in these flows.

  • 279.
    Hilletofth, Per
    et al.
    Högskolan i Skövde, Forskningscentrum för Virtuella system. Högskolan i Skövde, Institutionen för teknik och samhälle.
    Lättilä, Lauri
    Kouvola Research Unit, Lappeenranta University of Technology, Prikaatintie 9, FIN-45100, Kouvola, Finland.
    Hilmola, Olli-Pekka
    Kouvola Research Unit, Lappeenranta University of Technology, Prikaatintie 9, FIN-45100, Kouvola, Finland.
    Agent Based Decision Support in Manufacturing Supply Chain2009Inngår i: Agent and Multi-Agent Systems: Technologies and Applications: Third KES International Symposium, KES-AMSTA 2009, Uppsala, Sweden, June 3-5, 2009. Proceedings / [ed] Anne Håkansson, Ngoc Thanh Nguyen, Ronald L. Hartung, Robert J. Howlett, Lakhmi C. Jain, Berlin, Heidelberg: Springer Berlin/Heidelberg, 2009, s. 677-686Konferansepaper (Annet vitenskapelig)
    Abstract [en]

    Supply Chain Management (SCM) is becoming increasingly complex and an intensified competition in the end-markets has started to create a situation where co-operation requirements between companies in a Supply Chain (SC) are increasing. The old mechanistic operations management solutions are becoming obsolete and advanced decision support is increasingly needed to realize efficient and effective management of complex SCs. The objective of this research is to contribute to the understanding of how Agent Based Modeling (ABM) can advance decision making and to discuss why ABM should be regarded as method to realize Information Fusion (IF). In this research work an agent based model of SCM has been implemented in a simulation platform to provide an approach for evaluation of decision and management alternatives. Research shows that this kind of decision support system is based on IF, since it collects and fuses information from different sources into a situation image that provides effective support for human decision making

  • 280.
    Hilletofth, Per
    et al.
    Högskolan i Skövde, Forskningscentrum för Virtuella system. Högskolan i Skövde, Institutionen för teknik och samhälle.
    Ujvari, Sandor
    Högskolan i Skövde, Forskningscentrum för Virtuella system. Högskolan i Skövde, Institutionen för teknik och samhälle.
    Johansson, Ronnie
    Högskolan i Skövde, Forskningscentrum för Informationsteknologi. Högskolan i Skövde, Institutionen för kommunikation och information.
    Agent-Based Simulation Fusion for Improved Decision Making for Service Operations2009Inngår i: Proceedings of the 12th International Conference on Information Fusion, IEEE , 2009Konferansepaper (Fagfellevurdert)
    Abstract [en]

    We use agent-based modeling and simulation to fuse data from multiple sources to estimate the state of some system properties. This implies that the real system of interest is modeled and simulated using agent principles. Using Monte-Carlo simulation, we estimate the values of some decision-relevant numerical properties, such as utilization of resources and service levels, as a decision support for a Maintenance Service Provider. Our initial results indicate that this kind of fusion of information sources can improve the understanding of the problem domain (e.g. to what degree some critical properties influence service operations) and also generate a basis for decision-making.

  • 281.
    Hilletofth, Per
    et al.
    Högskolan i Skövde, Forskningscentrum för Virtuella system. Högskolan i Skövde, Institutionen för teknik och samhälle.
    Ujvari, Sandor
    Högskolan i Skövde, Forskningscentrum för Virtuella system. Högskolan i Skövde, Institutionen för teknik och samhälle.
    Lättilä, Lauri
    Lappeenranta University of Technology, Kouvola, Finland.
    Hilmola, Olli-Pekka
    Lappeenranta University of Technology, Kouvola, Finland.
    Agent-based decision support for maintenance service provider2010Inngår i: International Journal of Services Sciences, ISSN 1753-1446, Vol. 3, nr 2/3, s. 194-215Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Operations performed by a maintenance service provider (MSP) can include the entire maintenance function or select activities; these need to be well-balanced in terms of utilisation rate of own resources, maintenance cost incurred and the uptime of the customers’ production systems. MSPs face challenges due to the task of planning several non-associated plants and with a frequent lack of reliable information. In this research work, an agent-based decision support system of service-related maintenance has been developed. Research shows that this approach can improve the understanding of the problem domain and also generate a basis for decision-making and structural changes.

  • 282.
    Hilmola, Olli-Pekka
    et al.
    Lappeenranta University of Technology.
    Ujvari, SandorHögskolan i Skövde, Forskningscentrum för Virtuella system. Högskolan i Skövde, Institutionen för teknik och samhälle.
    International Journal of Services Sciences: Special Issue: Innovative Information Technology in the Service Sector2010Collection/Antologi (Fagfellevurdert)
  • 283.
    Hiort af Ornäs, Viktor
    Högskolan i Skövde, Forskningscentrum för Virtuella system. Högskolan i Skövde, Institutionen för teknik och samhälle.
    Significant Things & Significant Use: A self report study on objects of experiences with things2010Inngår i: Proceedings of the 7th International Conference on Design and Emotion / [ed] K. Sato, P.M.A. Desmet, P. Hekkert, G. Ludden, & A. Mathew, Design & Emotion Society , 2010Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Things thrill and delight, but also elicit frustration. To take experiences into consideration in product development there is a need to identify what they are directed at and what elicits them, i.e. their objects and antecedents. Self-reports collected from 51 participants covering 298 examples of emotions with things were analysed in order to identify what people find significant in experiences with every day products. The object of reactions and judgements was frequently something beyond the product and participants also described use, ideas and events as significant. In many cases the reported experiences focused on situations and events rather than the product as such. While use, ideas and events all constitute antecedents of experiences, they can also become objects of experiences at certain points of time and it may be possible to scaffold for them in design.

  • 284.
    Hiort af Ornäs, Viktor
    Högskolan i Skövde, Forskningscentrum för Virtuella system. Högskolan i Skövde, Institutionen för teknik och samhälle.
    The Significance of Things: Affective User-Artefact Relations2010Doktoravhandling, med artikler (Annet vitenskapelig)
    Abstract [en]

    Products help people act, but also thrill, excite, and elicit fear, joy and anger. Artefacts are a natural part of people’s everyday lives, sometimes associated with values, dreams and aspirations. While traditional user-centred approaches have focused on efficiency and effectiveness of use, injury prevention etc. new approaches focusing on product experience have emerged. However, while increased attention is being paid to the experiential side of goods and services there remains a need for knowledge and methodology with which to address experiences with things, especially with regard to elicitation, specification and evaluation of requirements. This project has therefore taken an exploratory qualitative approach, aiming to elucidate what it is that people find significant in experiences with products. 159 participants in six different studies have shared descriptions of experiences with things. The studies have come from different perspectives, triangulating data collected in individual and group interviews with self-reports. The analysis indicates that things often matter not in terms of their mere presence or physical properties, but by standing out from expectations, requiring attention or referring to some idea. Often the significance of products lay in the role(s) they play in events, and the perceived impact the thing has on the person’s ability to realise motives. While only a fraction of all experiences with things could be prescribed in product development it is possible to scaffold conditions that increase or decrease their likelihood. Three perspectives that could potentially be addressable in development work are: significant things and associated meanings, significance in use and significance of consequences beyond use. These imply somewhat different objectives for design and different needs for knowledge. User experience is not a property or quality of an artefact, but a perspective that can to some extent be addressed by enabling developers to identify requirements and align their understanding with what users find significant.

  • 285.
    Holm, Magnus
    Högskolan i Skövde, Institutionen för ingenjörsvetenskap. Högskolan i Skövde, Forskningscentrum för Virtuella system.
    Adaptive Decision Support for Shop-floor Operators using Function Blocks2017Doktoravhandling, monografi (Annet vitenskapelig)
    Abstract [en]

    In manual and semi-automation production systems, flexibility and adaptability are affected by the shop-floor operators’ skills, abilities and knowledge. Such dependencies highlight the vital importance of developing and utilising the knowledge, achievements and abilities of the operators working with production on the shop-floor. Teamwork, including both novice and highly experienced shop-floor operators, in a production environment with a high level of automation, is essential already today and is predicted to increase, when the complexity and demands of future production systems intensify. This trend is confirmed in both the research literature and by specialists within industry.

    The key to future competitiveness and effectiveness of the manufacturing industry is the shop-floor operators who handle the production systems. In addition, the future information intensive working environment, with its increasing complexity and less time available for decision-making, demands adaptive decision support and adaptive control systems that facilitate collaborative work on the shop-floor. It is therefore important to emphasise how decisions are supported in the time-limited working environment of the shop-floor, because this has a large impact on production output and quality and is vital to the success of the company. Consequently, this dissertation presents a framework for an adaptive decision support system that concentrates on shop-floor operators, in order to enhance their development and future contribution to leading edge production systems.

    The overall aim of the research presented is to define a framework for an Adaptive Decision Support System, to address the scope and demands of the future shop-floor, as indicated in the research literature, and confirm its relevance, as well as further elaborate it on the basis of interviews with production managers and HR specialists

    The research presented uses the design science research process. In parallel, decision support systems and the industrial shop-floor have been studied in the research literature and the current state of industrial practice has been assessed. These areas together form the basis for the research on adaptive decision support for shop-floor operators. A framework enabling adaptive decision support and adaptive system control, based on event-driven function block technology and Augmented Reality technology, is formulated.

    The gap of research on decision support for shop-floor operators, indicated in the research literature is addressed by the research preformed.  Adaptive and dynamic decision support and system control able to process vast amounts of information in real time demonstrates utility for shop-floor operators. The research presenting the Adaptive Decision Support System has demonstrated its utility for shop-floor systems and production operatives in two extensive studies using demonstrators based on real-life production environments.

    A methodology, the ‘User group’, has been formulated for research collaboration and bi-directional knowledge transfer between academia and the industrial partners. It provides tools that enable cooperation between the experienced research partner and the novices, despite their different levels of engagement in the same project, without dividing them into separate groups. The ‘user group’ case study presented describes how both the inexperienced and the research mature companies gain new knowledge and engage in ongoing research. By doing so, the industrial project partners have extensively supported the research presented and will subsequently be the expected beneficiaries.

  • 286.
    Holm, Magnus
    Högskolan i Skövde, Institutionen för ingenjörsvetenskap. Högskolan i Skövde, Forskningscentrum för Virtuella system.
    The future shop-floor operators, demands, requirements and interpretations2018Inngår i: Journal of manufacturing systems, ISSN 0278-6125, E-ISSN 1878-6642, Vol. 47, s. 35-42Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The evolution of the manufacturing industry reveals continuous progress and development throughout the years. This evolution not only includes production methodologies and the production equipment, it also includes the working environment of the shop-floor operators. The demands faced by the shop-floor operators have developed from strictly controlled, simple and monotonic tasks to self-controlled team work requiring a holistic approach that aims at continuous improvements and achieving a high degree of flexibility, adaptability and initiative.

    This paper describes the evolution of the shop-floor operator, according to the research literature and interviews with manufacturing managers and human resources specialists. In addition, the paper presents the response of future Swedish shop-floor operators, today’s high-school students, to a description of their possible future work as shop-floor operators. The Swedish manufacturing industry competes, to a large extent, on and responds to the international market. The findings made in this paper are thus also interesting for other industries and countries acting on the international market.

  • 287.
    Holm, Magnus
    et al.
    Högskolan i Skövde, Institutionen för ingenjörsvetenskap. Högskolan i Skövde, Forskningscentrum för Virtuella system.
    Adamson, Göran
    Högskolan i Skövde, Institutionen för ingenjörsvetenskap. Högskolan i Skövde, Forskningscentrum för Virtuella system.
    Moore, Philip
    Academy of Innovation & Research, Falmouth University, Cornwall, United kingdom.
    Wang, Lihui
    Högskolan i Skövde, Institutionen för ingenjörsvetenskap. Högskolan i Skövde, Forskningscentrum för Virtuella system. KTH Royal Institute of Technology, Stockholm, Sweden.
    Why I want to be a future Swedish shop-floor operator2016Inngår i: Research and Innovation in Manufacturing: Key Enabling Technologies for the Factories of the Future - Proceedings of the 48th CIRP Conference on Manufacturing Systems / [ed] Roberto Teti, Elsevier, 2016, Vol. 41, s. 1101-1106Konferansepaper (Fagfellevurdert)
    Abstract [en]

    When looking in rear view mirrors the Swedish as well as the international production industries can overview several years of progress covering all aspects of production. Production methodologies and machines etc. have changed and evolved, and so has the environment of the shop-floor operator. The demands on the shop-floor operators have grown from simple monotonic tasks with low complexity to pro-active team work requiring flexibility, continuous improvements and a holistic approach. With a base in a study where production and HR-managers at six Swedish manufacturing industries have been interviewed this paper identifies the role of today’s and the future Swedish shop-floor operator. The response to the described role of the future operator is compiled from the ones who will become the future Swedish shop-floor operators – today’s teenagers attending technical high-school. Their views of the environment of the future shop-floor operator are described by accuracy, development, a good working environment and team work. The paper also reveals what the offer should include to make these teenagers say: I want to be a future Swedish shop-floor operator.

  • 288.
    Holm, Magnus
    et al.
    Högskolan i Skövde, Institutionen för teknik och samhälle. Högskolan i Skövde, Forskningscentrum för Virtuella system.
    Adamson, Göran
    Högskolan i Skövde, Institutionen för teknik och samhälle. Högskolan i Skövde, Forskningscentrum för Virtuella system.
    Wang, Lihui
    Högskolan i Skövde, Institutionen för teknik och samhälle. Högskolan i Skövde, Forskningscentrum för Virtuella system. Royal Institute of Technology, Stockholm, Sweden.
    Enhancing Adaptive Production Using IEC 61499 Event-Driven Function Blocks2013Inngår i: Proceedings of the North American Manufacturing Research Institution of SME, vol. 41, 10-14 June, University of Wisconsin-Madison, Society of Manufacturing Engineers, North American Manufacturing Research Institute of SME , 2013, s. 420-429Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Reduction of production costs and the ability to continuously improve is a must for every manufacturer. High availability in a dynamic and complex production environment demands adaptability to recurring changes. Each device within the production systems holds more and more intelligence and computing power which supports an approach implementing the standard of IEC 61499 to enhance adaptive production by enabling a distributed automation system with improved productivity. Research approaching IEC 61499 is investigated and reported in this paper, covering both control of manufacturing equipment and adaptive process planning. The objective is to develop methodologies for process planning as well as machine control and monitoring for machining and assembly operations in a dynamic, adaptive and distributed environment using event-driven function blocks.

  • 289.
    Holm, Magnus
    et al.
    Högskolan i Skövde, Institutionen för teknik och samhälle. Högskolan i Skövde, Forskningscentrum för Virtuella system.
    Adamson, Göran
    Högskolan i Skövde, Institutionen för teknik och samhälle. Högskolan i Skövde, Forskningscentrum för Virtuella system.
    Wang, Lihui
    Högskolan i Skövde, Institutionen för teknik och samhälle. Högskolan i Skövde, Forskningscentrum för Virtuella system.
    IEC 61499 - Enabling Control of Distributed Systems Beyond IEC 61131-32012Inngår i: Proceedings of the SPS12 conference 2012, Swedish Production Academy , 2012, s. 37-44Konferansepaper (Fagfellevurdert)
  • 290.
    Holm, Magnus
    et al.
    Högskolan i Skövde, Forskningscentrum för Virtuella system. Högskolan i Skövde, Institutionen för teknik och samhälle.
    Adamson, Göran
    Högskolan i Skövde, Forskningscentrum för Virtuella system. Högskolan i Skövde, Institutionen för teknik och samhälle.
    Wang, Lihui
    Högskolan i Skövde, Forskningscentrum för Virtuella system. Högskolan i Skövde, Institutionen för teknik och samhälle.
    Moore, Philip
    University College Falmouth, United Kingdom.
    An IEC 61499 Function Block based Approach for CNC Machining Operations2012Inngår i: The 13th Mechatronics Forum International Conference Proceedings: Vol. 1/3 / [ed] Rudolf Scheidl & Bernhard Jakoby, Linz: TRAUNER Verlag, 2012, s. 115-121Konferansepaper (Fagfellevurdert)
    Abstract [en]

    In order to create an adaptive and interoperable CNC control system to explore the full functionality of CNC machine tools and to surpass the shortcomings and restrictions of the current CNC control standard using G-codes, an IEC 61499 function block based control system model has been developed. Basic machining operations are identified and classified as machining features, which are wrapped into Machining Feature Function Blocks (MF-FBs) with algorithms. For the machining of a part, the required MF-FBs are selected and combined into a Composite Function Block, comprising the correct control instructions for machining the part.

    The event-driven nature of these function blocks enables the run-time selection of appropriate algorithms and control of their correct behavior and dynamic execution, supporting the system’s ability to act in response to actual conditions and manufacturing requirements. Being truly adaptive makes it possible that different available machine tools be selected to machine a part with the appropriate control code generated at runtime. This eliminates the tedious CNC programming effort, and therefore no predefined, machine-specific control code has to be generated in advance. The use of generic function blocks for encapsulation of machining know-how in algorithms makes machines and CNC systems independent and therefore portable, reusable and interoperable.

  • 291.
    Holm, Magnus
    et al.
    Högskolan i Skövde, Institutionen för ingenjörsvetenskap. Högskolan i Skövde, Forskningscentrum för Virtuella system.
    Adamson, Göran
    Högskolan i Skövde, Institutionen för ingenjörsvetenskap. Högskolan i Skövde, Forskningscentrum för Virtuella system.
    Wang, Lihui
    KTH Royal Institute of Technology, Stockholm, Sweden.
    Moore, Philip
    Academy of Innovation & Research, Falmouth University, United Kingdom.
    Framework for an adaptive decision support system for industrial shop-floor operators2014Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Today’s shop-floor operators’ working tasks often stretches over a broad spectra of jobs; from ordinary production assignments to handling errors and performing maintenance. Demands for enhanced skills and knowledge are constantly raised to limit the consequences of tool breakage, machine down time and other stochastic events negatively affecting the production.

    To be able to meet these increasing demands a framework for a distributed and adaptive decision support system is proposed. It will help the shop-floor operator to distinguish between decision options and minimize time to consider appropriate actions to maximize productivity both during normal production and when facing unexpected or unscheduled events.

    In what ways is it possible to support operators in making decisions for optimal productivity?” was the opening question from the industry partner when beginning this research. Targeting this question a novel framework for an adaptive decision support system (DSS) enabled by event-driven function blocks, based on decision logics is proposed. Its ability to adapt to the actual conditions on the shop-floor is compared to a currently used voice message system in a test case.

  • 292.
    Holm, Magnus
    et al.
    Högskolan i Skövde, Institutionen för ingenjörsvetenskap. Högskolan i Skövde, Forskningscentrum för Virtuella system.
    Adamson, Göran
    Högskolan i Skövde, Institutionen för ingenjörsvetenskap. Högskolan i Skövde, Forskningscentrum för Virtuella system.
    Wang, Lihui
    KTH Royal Institute of Technology, Stockholm, Sweden.
    Moore, Philip
    Academy of Innovation & Research, Falmouth University, United Kingdom.
    The Future Swedish Shop-Floor Operator – Interviews with Production Managers2014Inngår i: Proceedings of the sixth Swedish Production Symposium, 2014, 2014Konferansepaper (Fagfellevurdert)
    Abstract [en]

    This paper is based on a study in which production and HR managers at six Swedish manufacturing industries have been interviewed about the role of the shop-floor operator, taking off in today’s situation in trying to identify the future one. As well as the production methods and the machines etc. in the production system continuously evolve, so does the environment of the shop-floor operator. Increasing complexity in the production systems raises demands on the operators’ ability to handle ICT-tools to gain decision support and knowledge needed in the future shop-floor environment. 

  • 293.
    Holm, Magnus
    et al.
    Högskolan i Skövde, Institutionen för ingenjörsvetenskap. Högskolan i Skövde, Forskningscentrum för Virtuella system.
    Cordero Garcia, Aimar
    Högskolan i Skövde, Institutionen för ingenjörsvetenskap. Högskolan i Skövde, Forskningscentrum för Virtuella system.
    Adamson, Göran
    Högskolan i Skövde, Institutionen för ingenjörsvetenskap. Högskolan i Skövde, Forskningscentrum för Virtuella system.
    Wang, Lihui
    KTH Royal Institute of Technology, Stockholm, Sweden.
    Adaptive decision support for shop-floor operators in automotive industry2014Inngår i: Procedia CIRP, ISSN 2212-8271, E-ISSN 2212-8271, Vol. 17, s. 440-445Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Today's operators on factory shop-floors are often not stationed, dealing with a single or few tasks but have increasing responsibilities demanding enhanced skills and knowledge in a production environment where any disturbance must be settled with adequate actions without delay to keep optimum output. To be able to respond to these demands, the operators need dynamic, distributed and adaptive decision support in real-Time, helping them to distinguish decision options and maximizing productivity despite incoming stochastic events. The minimum of time and option for operators to consider appropriate action both during normal production and when facing unexpected or unscheduled events point out the need of adaptive decision support for operators. When initiating this research project the question from the industry partner was the following: In what ways is it possible to support operators in making decisions for optimal productivity? By targeting this problem this paper introduces a novel framework for an adaptive decision-support system enabled by event-driven function blocks and based on decision logics. The proposed decision support systems' ability to adapt to the actual conditions on the shop-floor is validated through a case study, and its capability is compared to the voice message system installed on-site.

  • 294.
    Holm, Magnus
    et al.
    Högskolan i Skövde, Institutionen för ingenjörsvetenskap. Högskolan i Skövde, Forskningscentrum för Virtuella system.
    Danielsson, Oscar
    Högskolan i Skövde, Institutionen för ingenjörsvetenskap. Högskolan i Skövde, Forskningscentrum för Virtuella system.
    Syberfeldt, Anna
    Högskolan i Skövde, Institutionen för ingenjörsvetenskap. Högskolan i Skövde, Forskningscentrum för Virtuella system.
    Moore, Philip
    Högskolan i Skövde, Institutionen för ingenjörsvetenskap. Högskolan i Skövde, Forskningscentrum för Virtuella system.
    Wang, Lihui
    Sustainable Manufacturing, KTH Royal Institute of Technology, Kungliga Tekniska Högskolan, Stockholm.
    Adaptive instructions to novice shop-floor operators using Augmented Reality2017Inngår i: Journal of Industrial and Production Engineering, ISSN 2168-1015, Vol. 34, nr 5, s. 362-374Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    This paper presents a novel system using Augmented Reality and Expert Systems to enhance the quality and efficiency of shop-floor operators. The novel system proposed provides an adaptive tool that facilitates and enhances support on the shop-floor, due to its ability to dynamically customize the instructions displayed, dependent upon the competence of the user. A comparative study has been made between an existing method of quality control instructions at a machining line in an automotive engine plant and this novel system. It has been shown that the new approach outcompetes the existing system, not only in terms of perceived usability but also with respect to two other important shop-floor variables: quality and productivity. Along with previous research, the outcomes of these test cases indicate the value of using Augmented Reality technology to enhance shop-floor operators’ ability to learn and master new tasks.

  • 295.
    Holm, Magnus
    et al.
    Högskolan i Skövde, Forskningscentrum för Virtuella system. Högskolan i Skövde, Institutionen för teknik och samhälle.
    Doverborn, Josefine
    Ng, Amos
    Högskolan i Skövde, Forskningscentrum för Virtuella system. Högskolan i Skövde, Institutionen för teknik och samhälle.
    De Vin, Leo
    Högskolan i Skövde, Forskningscentrum för Virtuella system. Högskolan i Skövde, Institutionen för teknik och samhälle.
    Optimisation of Operation Sequences in Flexible Manufacturing Cells using Virtual Manufacturing Tools2009Inngår i: Proceedings of the 19th International Conference on Flexible Automation and Intelligent Manufacturing / [ed] Farhad Nabhani, Teesside University , 2009, s. 1348-1355Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Manufacturing organisations are continuously forced to improve the way of working to maintain their competitiveness on the global market. To optimize a production facility requires not only an optimal design of the whole line but also its internal operations sequencing and scheduling during the operational phase. The use of Virtual Manufacturing tools such as Discrete Event Simulation and Computer Aided Robotics has been proven to be highly effective both for production system design and for operational analysis and improvement. This paper proposes a new optimisation method, named SIMBOSeer, which synergistically combines the areas of optimisation, flexibility and virtual manufacturing that integrates robot simulation with simulation-based optimisation. Evaluation of SIMBOSeer, as applied to an existing manufacturing cell at a powertrain manufacturing company in Sweden, has shown that it can be used as an iterative process of analysis and optimisation. The results, when using realistic what-if scenarios, clearly point out that SIMBOSeer can facilitate the optimisation of operation sequences and decrease the total cycle time of the manufacturing cell. This is due to the fact that many non-value adding functions, such as unnecessary tool changes, which have a great negative impact on the effectiveness of the flexible manufacturing cell, can be avoided. Whilst the use of SIMBOSeer has obvious advantages under normal operating conditions of the cell, its use become even more beneficial when disturbance like tool failures occur or when product variants are introduced to the cell.

  • 296.
    Holm, Magnus
    et al.
    Högskolan i Skövde, Institutionen för ingenjörsvetenskap. Högskolan i Skövde, Forskningscentrum för Virtuella system.
    Frantzén, Marcus
    Högskolan i Skövde, Institutionen för ingenjörsvetenskap. Högskolan i Skövde, Forskningscentrum för Virtuella system.
    Aslam, Tehseen
    Högskolan i Skövde, Institutionen för ingenjörsvetenskap. Högskolan i Skövde, Forskningscentrum för Virtuella system.
    Moore, Philip
    Falmouth University, Penryn, Cornwall, United Kingdom.
    Wang, Lihui
    Högskolan i Skövde, Institutionen för ingenjörsvetenskap. Högskolan i Skövde, Forskningscentrum för Virtuella system. KTH Royal Institute of Technology, Stockholm, Sweden.
    A methodology facilitating knowledge transfer to both research experienced companies and to novice SMEs2017Inngår i: International Journal of Enterprise Network Management, ISSN 1748-1252, Vol. 8, nr 2, s. 123-140, artikkel-id IJENM0080202Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    In this paper, knowledge transfer is defined as a process of disseminating both technological and theoretical understanding as well as enhancing both industrial and academic knowledge through conducted research to project partners collaborating within a research project. To achieve this, a new methodology called 'user groups' is introduced. It facilitates knowledge transfer between project participants in collaborative research programs engaging both experienced and unexperienced partners regardless of level of input. The introduced methodology 'user groups' provides tools for collaborating with several research partners even though their levels of engagement in the project and prior research experience may vary without dividing them into separate groups. It enables all project partners to gain new knowledge and by so doing extending the knowledge society. The case study shows that the eight engaged companies are able to cooperate, achieve their own objectives and, both jointly and individually, contribute to the overall project goals.

  • 297.
    Holm, Magnus
    et al.
    Högskolan i Skövde, Institutionen för ingenjörsvetenskap. Högskolan i Skövde, Forskningscentrum för Virtuella system.
    Givehchi, Mohammad
    Högskolan i Skövde.
    Mohammed, Abdullah
    Högskolan i Skövde.
    Wang, Lihui
    KTH Royal Institute of Technology, Stockholm, Sweden.
    Web based monitoring and control of distant Robotic Operations2012Inngår i: Proceedings of the ASME 2012 International Manufacturing Science and Engineering Conference MSEC2012 June 4-8, 2012, Notre Dame, Indiana, USA, ASME Press, 2012, s. 605-612Konferansepaper (Fagfellevurdert)
    Abstract [en]

    In order to improve the production efficiency while facing today’s manufacturing uncertainty, responsive and adaptive capabilities for rapid production changes are essential. This paper presents how dynamic control and real-time monitoring (embedded in a web-based Wise-ShopFloor framework) can integrate virtual models with real shop floors. Wise-ShopFloor (Web-based integrated sensor-driven e-ShopFloor)uses Java technologies (e.g., Java Servlet and Java3D) for implementing the system. It allows the operators, both remote and on-site, to monitor and control machines, devices and operations on a shop floor, based on run-time information from the connected machines, devices and their sensors. Two case studies are presented to demonstrate the approach towards web-based adaptive manufacturing. The first demonstrating how OPC-technology is used to improve the monitoring and control capabilities of the production and the second one focusing  on remote control of a robot eliminating the need of motion planning and tedious robot programming.

  • 298.
    Hossain, Mosharraf
    et al.
    The Royal Institute of Technology (KTH), Department of Production Engineering, School of Industrial Engineering and Management, Stockholm, Sweden.
    Harari, Natalia
    The Royal Institute of Technology (KTH), Department of Production Engineering, School of Industrial Engineering and Management, Stockholm, Sweden.
    Semere, Daniel
    The Royal Institute of Technology (KTH), Department of Production Engineering, School of Industrial Engineering and Management, Stockholm, Sweden.
    Mårtensson, Pär
    Scania SPS & Industrial Development.
    Ng, Amos. H. C.
    Högskolan i Skövde, Institutionen för teknik och samhälle. Högskolan i Skövde, Forskningscentrum för Virtuella system.
    Andersson, Martin
    Högskolan i Skövde, Institutionen för teknik och samhälle. Högskolan i Skövde, Forskningscentrum för Virtuella system.
    Integrated Modeling and Application of Standardized Data Schema2012Inngår i: Proceedings of the 5th Swedish Production Symposium (SPS 12), 2012, s. 473-478Konferansepaper (Fagfellevurdert)
  • 299.
    Huang, Rui
    et al.
    School of Computer Science, Nanjing University of Posts and Telecommunications Nanjing City, China.
    Ericson, Stefan
    Högskolan i Skövde, Institutionen för ingenjörsvetenskap. Högskolan i Skövde, Forskningscentrum för Virtuella system.
    An Efficient Way to Estimate the Focus of Expansion2018Inngår i: 2018 3rd IEEE International Conference on Image, Vision and Computing (ICIVC 2018), IEEE, 2018, s. 691-695Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Detecting independent motion from a single camera is a difficult task in computer vision. It is because the captured image sequences are the combinations of the objects' movements and the camera's ego-motion. One major branch is to find the focus of expansion (FOE) instead as the goal. This is ideal for the situation commonly seen in UAV's camera system. In this case, the translation is dominant in camera's motion while the rotation is relatively small. To separate the ego motion and scene structure, many researchers used the directional flow as the theoretic basis and extracted its properties related to FOE. In this paper, we formulate finding FOE as an optimizing problem. The position of FOE has the minimal standard deviation for the directional flow in all directions, which is also subjected to the introduced constraint. The experiments show the proposed methods out-perform the previous method.

  • 300.
    Huertas, Ana
    Högskolan i Skövde, Institutionen för ingenjörsvetenskap. Högskolan i Skövde, Forskningscentrum för Virtuella system. Volvo Cars Corporation.
    Decision support system for feeding policy selection in production settings: Research proposal2016Rapport (Annet vitenskapelig)
    Abstract [en]

    Competitiveness is highly important in automotive industry. Customers’ satisfaction is decisive and that has turned out in high vehicle customization. Customization implies for example that a vehicle model can include several types of engines; inferring in high engine model variety on the assembly systems. Production lines balancing and ergonomic factors within assembly operations usually trigger unbalances on the logistics resources utilization. A proper feeding policy selection can palliate the impact of the unbalances generated by the assembly operations, improve the performance of the system and reduce cost. Selection among different policies is often done by following qualitative criteria which are influenced by product structure, operational constraints, company-specific practices and tradition. This project consists of the development of a decision support system for feeding policy selection in production settings. This system will automatically select the feeding policy at a single component level and evaluate the impact brought by this decision when interacting with the production setting. 

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