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  • 10101.
    Wang, Lihui
    University of Skövde, The Virtual Systems Research Centre. University of Skövde, School of Technology and Society.
    International Journal of Manufacturing Research2011Collection (editor) (Refereed)
  • 10102.
    Wang, Lihui
    University of Skövde, The Virtual Systems Research Centre. University of Skövde, School of Technology and Society.
    International Journal of Manufacturing Research2009Collection (editor) (Other academic)
  • 10103.
    Wang, Lihui
    University of Skövde, School of Technology and Society. University of Skövde, The Virtual Systems Research Centre.
    Overview of an adaptive setup planning approach for job shop operations2009In: ASME 2009 International Manufacturing Science and Engineering Conference, Volume 1: Advances in Manufacturing Process Planning and Scheduling, ASME Press, 2009, p. 221-229Conference paper (Refereed)
    Abstract [en]

    This paper presents an overview of an adaptive setup planning system that considers both the availability and capability of machines on a shop floor. It integrates scheduling functions at setup planning stage, and utilizes a two-step decision-making strategy for generating machine-neutral and machine-specific optimal setup plans. The objective is to enable adaptive setup planning for dynamic machining job shop operations. Particularly, this paper documents basic algorithms and architecture of the setup planning system for dynamically assigned machines. It is then validated through a case study.

  • 10104.
    Wang, Lihui
    University of Skövde, The Virtual Systems Research Centre. University of Skövde, School of Technology and Society.
    Planning towards enhanced adaptability in digital manufacturing2011In: International journal of computer integrated manufacturing (Print), ISSN 0951-192X, E-ISSN 1362-3052, Vol. 24, no 5, p. 378-390Article in journal (Refereed)
    Abstract [en]

    This paper presents an integrated approach for developing a web-based system with enhanced adaptability, including distributed process planning, real-time monitoring and remote machining. The objective is to develop a new methodology and relevant processing algorithms for enhancing adaptability in digital manufacturing. This approach is enabled by a Wise-ShopFloor (Web-based integrated sensor-driven e-ShopFloor) framework targeting distributed yet collaborative manufacturing environments. Utilising the latest Java technologies (Java 3D and Java Servlet) for system implementation, it allows end-users to plan and control distant manufacturing operations based on runtime information from shop floors. Details on the principle of the Wise-ShopFloor framework, system architecture, and a prototype system are reported in this paper. An example of distributed process planning for remote machining is chosen as a case study to demonstrate the effectiveness of this approach toward web-based digital manufacturing.

  • 10105.
    Wang, Lihui
    University of Skövde, The Virtual Systems Research Centre. University of Skövde, School of Technology and Society.
    Wise-Shop Floor: Linking Virtual Manufacturing to Real Productions2009In: The International 3rd Swedish Production Symposium / [ed] B. G. Rosén, The Swedish Production Academy , 2009, p. 164-169Conference paper (Refereed)
    Abstract [en]

    This paper presents an integrated approach for web-based sensor-driven real-time monitoring and control. it is enabled by a Wise-ShopFloor (Web-based integrated sensor-driven e-ShopFloor) framework targeting distributed yet collaborative manufacturing environments. The objective of this research is to develop methodology and algorithms that utilise virtual manufacturing technology for real production. Details on the principle of the Wise-ShopFloor framework, system architecture, and a proof-of-concept prototype are reported in this paper. Remote machining is chosen as a case study to demonstrate the effectiveness of this approach toward web-based manufacturing.

  • 10106.
    Wang, Lihui
    et al.
    University of Skövde, The Virtual Systems Research Centre. University of Skövde, School of Technology and Society.
    Adamson, Göran
    University of Skövde, School of Technology and Society. University of Skövde, The Virtual Systems Research Centre.
    Holm, Magnus
    University of Skövde, The Virtual Systems Research Centre. University of Skövde, School of Technology and Society.
    Moore, Philip
    Mechatronics Research Centre, De Montfort University, Leicester LE1 9BH, United Kingdom.
    A review of function blocks for process planning and control of manufacturing equipment2012In: Journal of manufacturing systems, ISSN 0278-6125, E-ISSN 1878-6642, Vol. 31, no 3, p. 269-279Article, review/survey (Refereed)
    Abstract [en]

    Manufacturing in a job-shop environment is often characterized by a large variety of products in small batch sizes, requiring real-time monitoring for dynamic distributed decision making, and adaptive control capabilities that are able to handle, in a responsive way, different kinds of uncertainty, such as changes in demand and variations in production capability and functionality. In many manufacturing systems, traditional methods, based on offline processing performed in advance, are used. These methods are not up to the standard of handling uncertainty, in the dynamically changing environment of these manufacturing systems. Using real-time manufacturing intelligence and information to perform at a maximum level, with a minimum of unscheduled downtime, would be a more effective approach to handling the negative performance impacts of uncertainty. The objective of our research is to develop methodologies for distributed, adaptive and dynamic process planning as well as machine monitoring and control for machining and assembly operations, using event-driven function blocks. The implementation of this technology is expected to increase productivity, as well as flexibility and responsiveness in a job-shop environment. This paper, in particular, presents the current status in this field and a comprehensive overview of our research work on function block-enabled process planning and execution control of manufacturing equipment.

  • 10107.
    Wang, Lihui
    et al.
    University of Skövde, School of Technology and Society. University of Skövde, The Virtual Systems Research Centre.
    Adamson, Göran
    University of Skövde, School of Technology and Society. University of Skövde, The Virtual Systems Research Centre.
    Holm, Magnus
    University of Skövde, School of Technology and Society. University of Skövde, The Virtual Systems Research Centre.
    Moore, Philip
    De Montfort University.
    Current Status of Function Blocks for Process Planning and Execution Control of Manufacturing Equipment2011In: Proceedings of the 21st International Conference on Flexible Automation and Intelligent Manufacturing, Feng Chia University , 2011, p. 963-973Conference paper (Refereed)
    Abstract [en]

    Manufacturing in a job-shop environment is often characterized by a large variety of products in small batch size, requiring real-time monitoring for dynamic distributed decision making, as well as dynamic control capabilities that are able to handle, in a responsive and adaptive way, different kinds of uncertainty, such as changes in demand and variations in production capability and functionality. In many manufacturing systems, traditional methods, based on offline processing performed in advance, are used. These methods are not up to the standard of handling uncertainty, in the dynamically changing environment of these manufacturing systems. Using real-time manufacturing intelligence and information to perform at a maximum level, with a minimum of unscheduled downtime, would be a more effective approach to handling the negative performance impacts of uncertainty. The objective of our research is to develop methodologies for distributed, adaptive and dynamic process planning as well a machine monitoring and control for machining and assembly operations, using event-driven function blocks. The implementation of this technology is expected to increase productivity, as well as flexibility and responsiveness in a job-shop environment. This paper, in particular, presents the current status in this field and a comprehensive overview of our research work on function block-enabled process planning and execution control of manufacturing equipment.

  • 10108.
    Wang, Lihui
    et al.
    University of Skövde, School of Technology and Society.
    Bi, Z. M.
    Current Status of 3D Data Acquisition and Processing Technologies2010In: 20th International Conference on Flexible Automation and Intelligent Manufacturing 2010 (FAIM 2010): Volume 2 of 2, Curran Associates, Inc., 2010, p. 595-607Conference paper (Refereed)
  • 10109.
    Wang, Lihui
    et al.
    University of Skövde, The Virtual Systems Research Centre. University of Skövde, School of Technology and Society.
    Cai, Ningxu
    Hyperion Technologies, Inc..
    Feng, Hsi-Yung
    University of British Colombia.
    Ma, Ji
    University of Western Ontario.
    ASP: An Adaptive Setup Planning Approach for Dynamic Machine Assignments2010In: IEEE Transactions on Automation Science and Engineering, ISSN 1545-5955, E-ISSN 1558-3783, Vol. 7, no 1, p. 2-14Article in journal (Refereed)
    Abstract [en]

    This paper presents a decision-making approach towards adaptive setup planning that considers both the availability and capability of machines on a shop floor. It loosely integrates scheduling functions at the setup planning stage, and utilizes a two-step decision-making strategy for generating machine-neutral and machine-specific setup plans at each stage. The objective of the research is to enable adaptive setup planning for dynamic job shop machining operations. Particularly, this paper covers basic concepts and algorithms for one-time generic setup planning, and run-time final setup merging for dynamic machine assignments. The decision-making algorithms validation is further demonstrated through a case study.

  • 10110.
    Wang, Lihui
    et al.
    University of Skövde, School of Technology and Society. University of Skövde, The Virtual Systems Research Centre.
    Feng, Hsi-Yung
    The University of British Columbia.
    Adaptive Manufacturing2011In: Journal of manufacturing systems, ISSN 0278-6125, E-ISSN 1878-6642, Vol. 30, no 3, p. 117-117Article in journal (Refereed)
  • 10111.
    Wang, Lihui
    et al.
    University of Skövde, School of Technology and Society. University of Skövde, The Virtual Systems Research Centre.
    Feng, Hsi-YungThe University of British Columbia.
    Journal of Manufacturing Systems2011Collection (editor) (Refereed)
  • 10112.
    Wang, Lihui
    et al.
    University of Skövde, School of Technology and Society. University of Skövde, The Virtual Systems Research Centre.
    Givehchi, Mohammad
    University of Skövde, School of Technology and Society. University of Skövde, The Virtual Systems Research Centre.
    Web-DPP: An adaptive approach to planning and monitoring of job-shop machining operations2011In: Proceedings of the 7th CIRP-Sponsored International Conference on Digital Enterprise Technology, Athens, Greece, 2011, University of Patras , 2011Conference paper (Refereed)
    Abstract [en]

    Utilising the existing IT infrastructure, the objective of this research is to develop an integrated Web-based distributed process planning system (Web-DPP) for job-shop machining operations and their runtime execution monitoring. Our approach tries to engage a dispersed working group in a collaborative environment, allowing the team members to share real-time information through the Web-DPP. This paper analyses the challenges, and presents both the system design specification and the latest development of the Web-DPP system. Particularly, it proposes a two-tier architecture for effective decision making and introduces a set of event-driven function blocks for bridging the gap between high-level planning and low-level execution functions. By connecting to a Wise-ShopFloor framework, it enables real-time execution monitoring during the machining operations, locally or remotely. The closed-loop information flow makes adaptive planning possible.

  • 10113.
    Wang, Lihui
    et al.
    University of Skövde, School of Technology and Society. University of Skövde, The Virtual Systems Research Centre.
    Givehchi, Mohammad
    University of Skövde, School of Technology and Society. University of Skövde, The Virtual Systems Research Centre.
    Adamson, Göran
    University of Skövde, School of Technology and Society. University of Skövde, The Virtual Systems Research Centre.
    Holm, Magnus
    University of Skövde, School of Technology and Society. University of Skövde, The Virtual Systems Research Centre.
    A sensor-driven 3D model-based approach to remote real-time monitoring2011In: CIRP annals, ISSN 0007-8506, E-ISSN 1726-0604, Vol. 60, no 1, p. 493-496Article in journal (Refereed)
    Abstract [en]

    This paper presents an integrated approach for remote real-time monitoring of manufacturing operations. It is enabled by using virtual 3D models driven by real sensor data. The objectives of this research are twofold: (1) to significantly reduce network traffic for real-time monitoring over the Internet: and (2) to increase the controllability of manufacturing systems from anywhere in a decentralised environment. Particularly, this paper covers the principle of the approach, system architecture, prototype implementation, and a case study of remote control of a robotic assembly cell. Compared with camera-based monitoring systems, our approach only consumes less than 1% of its network bandwidth, feasible and practical as a web-based portable solution. (C) 2011 CIRP.

  • 10114.
    Wang, Lihui
    et al.
    University of Skövde, The Virtual Systems Research Centre. University of Skövde, School of Technology and Society.
    Givehchi, Mohammad
    University of Skövde, The Virtual Systems Research Centre. University of Skövde, School of Technology and Society.
    Schmidt, Bernard
    University of Skövde, The Virtual Systems Research Centre. University of Skövde, School of Technology and Society.
    Adamson, Göran
    University of Skövde, The Virtual Systems Research Centre. University of Skövde, School of Technology and Society.
    Robotic Assembly Planning and Control with Enhanced Adaptability2012In: 45th CIRP Conference on Manufacturing Systems 2012 / [ed] G. Chryssolouris, D. Mourtzis, Elsevier, 2012, Vol. 3, p. 173-178Conference paper (Refereed)
    Abstract [en]

    The dynamic market today requires manufacturing companies to possess high degree of adaptability and flexibility in order to deal with shop-floor uncertainties. Such uncertainties as missing tools, part shortage, job delay, rush-order and unavailability of resources, etc. happen more often in assembly operations. Targeting this problem, this research proposes a function block enabled approach to achieving adaptability and flexibility in assembly planning and control. In particular, this paper presents our latest development using a robotic mini assembly cell for testing and validation of a function block enabled system capable of assembly and robot trajectory planning and control. It is expected that a better adaptability can be achieved by this approach.

  • 10115.
    Wang, Lihui
    et al.
    University of Skövde, The Virtual Systems Research Centre. University of Skövde, School of Technology and Society.
    Holm, Magnus
    University of Skövde, The Virtual Systems Research Centre. University of Skövde, School of Technology and Society.
    Adamson, Göran
    University of Skövde, The Virtual Systems Research Centre. University of Skövde, School of Technology and Society.
    Embedding a process plan in function blocks for adaptive machining2010In: CIRP annals, ISSN 0007-8506, E-ISSN 1726-0604, Vol. 59, no 1, p. 433-436Article in journal (Refereed)
    Abstract [en]

    This paper presents a function block enabled approach towards adaptive process planning and machining. A two-layer structure of supervisory planning and operation planning is proposed to separate generic data from machine-specific ones. The supervisory planning is only performed once, in advance, at the shop level to generate machine-neutral process plans, whereas the operation planning is carried out at runtime at the machine level to determine machine-specific operations. Such adaptive decision making is facilitated by event-driven algorithms embedded in the function blocks. It is expected that the new approach can greatly enhance the dynamism of fluctuating job-shop machining operations.

  • 10116.
    Wang, Lihui
    et al.
    University of Skövde, The Virtual Systems Research Centre. University of Skövde, School of Technology and Society.
    Keshavarzmanesh, Shadi
    Univ Western Ontario, Dept Mech & Mat Engn, London, ON, Canada .
    Feng, Hsi-Yung
    Univ British Columbia, Dept Mech Engn, Vancouver, BC V6T 1W5, Canada.
    A function block based approach for increasing adaptability of assembly planning and control2011In: International Journal of Production Research, ISSN 0020-7543, E-ISSN 1366-588X, Vol. 49, no 16, p. 4903-4924Article in journal (Refereed)
    Abstract [en]

    Today's market turbulences cause frequent changes in manufacturing environments. Products diversity, small batch sizes and short life cycles have increased production uncertainties and created a highly dynamic shop floor environment. One essential requirement of such an environment is an adaptive planning and control system that is sufficiently agile to respond to the variety of production requirements and enable easy system reconfiguration at run-time. When developing a product, assembly is a key area that impacts the manufacturing system's responsiveness to the changes. In this research, a framework and a new methodology are introduced to increase the adaptability and autonomy of job-shop assembly process planning and control using function blocks (FBs). A function block is a reusable functional module with an explicit event-driven model, and provides for data flow and finite state automata based control. Event-driven and FB-enabled decision-making is unique in adaptive assembly planning and control. It is explained through an example of a two-robot assembly work cell, where the result of the adaptive planning is wrapped in FBs for execution. The proposed approach has been implemented and simulated using Matlab Simulink in the case study. The simulation demonstrates how this approach would increase the adaptability and responsiveness to changes that may occur regularly in dynamic job-shop assembly operations.

  • 10117.
    Wang, Lihui
    et al.
    University of Skövde, School of Technology and Society. University of Skövde, The Virtual Systems Research Centre.
    Keshavarzmanesh, Shadi
    The University of Western Ontario, Canada.
    Feng, Hsi-Yung
    The University of British Columbia, Canada.
    Reconfigurable Facility Layout Design for Job-Shop Assembly Operations2011In: Multi-objective Evolutionary Optimisation for Product Design and Manufacturing / [ed] Lihui Wang, Amos H. C. Ng, Kalyanmoy Deb, Springer London, 2011, p. 365-384Chapter in book (Refereed)
    Abstract [en]

    Highly turbulent environment of dynamic job-shop operations affects shop-floor layout as well as manufacturing operations. Due to the dynamic nature of layout changes, essential requirements such as adaptability and responsiveness to the changes need to be considered in addition to the cost issues of material handling and machine relocation when reconfiguring a shop floor’s layout. Here, based on the source of uncertainty, the shop-floor layout problem is split into two sub-problems and dealt with by two modules: re-layout and find-route. Genetic algorithm is used where changes cause the entire shop re-layout, while function blocks are utilized to find the best sequence of robots for the new conditions within the existing layout. This chapter reports the latest development to the authors’ previous work.

  • 10118.
    Wang, Lihui
    et al.
    University of Skövde, The Virtual Systems Research Centre. University of Skövde, School of Technology and Society.
    Keshavarzmanesh, Shadi
    University of Western Ontario, Dept. of Mechanical and Materials Engineering, London, ON N6A 5B8, Canada.
    Feng, Hsi-Yung (Steve)
    University of British Columbia, Dept. of Mechanical and Materials Engineering, Vancouver, BC V6T 1Z4, Canada.
    A Hybrid Approach for Dynamic Assembly Shop Floor Layout2010In: Proceedings of the 6th IEEE Conference on Automation Science and Engineering, IEEE conference proceedings, 2010, p. 604-609Conference paper (Refereed)
    Abstract [en]

    Highly  turbulent  environment  of  dynamic  job-shop operations affects the shop floor layout problem as well as other areas. Due to frequently altering needs of layout, essential requirements such as adaptability and proactive responsiveness to the dynamic changes need to be considered in addition to the materials  handling  and  machine  relocation  costs  when  a  shop floor is reconfigured from one layout to the next. Targeting the autonomy  and  adaptability  of  dynamic  and  distributed  job-shop  assembly  operations,  this  paper  proposes  to  incorporate function block methodology to deal with the layout issues of the frequently  changing  environment.  This  is  an  extension  to  the authors’ previous work.

  • 10119.
    Wang, Lihui
    et al.
    University of Skövde, The Virtual Systems Research Centre. University of Skövde, School of Technology and Society.
    Koh, S.C. LennyThe University of Sheffield.
    Enterprise Networks and Logistics for Agile Manufacturing2010Collection (editor) (Other academic)
  • 10120.
    Wang, Lihui
    et al.
    University of Skövde, The Virtual Systems Research Centre. University of Skövde, School of Technology and Society.
    Ma, Ji
    The University of Western Ontario, Canada.
    Feng, Hsi-Yung
    The University of British Columbia, Canada.
    Web-DPP: A Distributed Process Planning System for Adaptive Machining Operations2009In: Proceedings of the 19th International Conference on Flexible Automation and Intelligent Manufacturing: FAIM 2009 / [ed] Farhad Nabhani, Teesside University , 2009, p. 186-193Conference paper (Refereed)
    Abstract [en]

    Outsourcing, joint ventures, and cross-border collaborations have led to work environments geographically distributed across organizational and national boundaries. Targeting the distributed environment, the Web has been widely used for development of collaborative applications supporting dispersed working groups and organizations, because of its platform, network and operating system transparency, and its easy-to-use browser interface. The objective of this research is to develop an innovative Web-based distributed process planning system (Web-DPP) for machining operations. Our approach tries to engage a dispersed working group in a collaborative environment, allowing the team members to share real-time information through the Web-DPP. This paper presents both the system design specification and the latest development of this system.

  • 10121.
    Wang, Lihui
    et al.
    University of Skövde, School of Technology and Society. University of Skövde, The Virtual Systems Research Centre.
    Ma, Ji
    Department of Mechanical and Materials Engineering, University of Western Ontario, London, Canada.
    Feng, Hsi-Yung
    Department of Mechanical Engineering, University of British Columbia, Vancouver, Canada.
    Web-DPP: towards job-shop machining process planning and monitoring2011In: International Journal of Manufacturing Research, ISSN 1750-0591, Vol. 6, no 4, p. 337-353Article in journal (Refereed)
    Abstract [en]

    Outsourcing, joint ventures and cross-border collaborations have led to job environments geographically distributed. Targeting the distributed environment, the web has been widely used for developing collaborative applications due to its platform, network and operating system transparency and easy-to-use interface. Utilising the existing infrastructure, the objective of this research is to develop an integrated Web-based Distributed Process Planning (Web-DPP) system for job-shop machining operations and execution monitoring. Our approach engages a dispersed working group in a collaborative environment, allowing team members to share real-time information through the Web-DPP. This paper presents both the system design specification and the latest development.

  • 10122.
    Wang, Lihui
    et al.
    KTH Royal Institute of Technology, Stockholm, Sweden.
    Mohammed, Abdullah
    KTH Royal Institute of Technology, Stockholm, Sweden.
    Wang, Xi Vincent
    KTH Royal Institute of Technology, Stockholm, Sweden.
    Schmidt, Bernard
    University of Skövde, School of Engineering Science. University of Skövde, The Virtual Systems Research Centre.
    Energy-efficient robot applications towards sustainable manufacturing2018In: International journal of computer integrated manufacturing (Print), ISSN 0951-192X, E-ISSN 1362-3052, Vol. 31, no 8, p. 692-700Article in journal (Refereed)
    Abstract [en]

    The cloud technology provides sustainable solutions to the modern industrial robotic cells. Within the context, the objective of this research is to minimise the energy consumption of robots during assembly in a cloud environment. Given a robot path and based on the inverse kinematics and dynamics of the robot from the cloud, a set of feasible configurations of the robot can be derived, followed by calculating the desirable forces and torques on the joints and links of the robot. Energy consumption is then calculated for each feasible configuration along the path. The ones with the lowest energy consumption are chosen. Since the energy-efficient robot configurations lead to reduced overall energy consumption, this approach becomes instrumental and can be applied to energy-efficient robotic assembly. This cloud-based energy-efficient approach for robotic applications can largely enhance the current practice as demonstrated by the results of three case studies, leading towards sustainable manufacturing.

  • 10123.
    Wang, Lihui
    et al.
    University of Skövde, School of Engineering Science. University of Skövde, The Virtual Systems Research Centre. KTH Royal Institute of Technology, Stockholm, Sweden.
    Mohammed, Abdullah
    KTH Royal Institute of Technology, Stockholm, Sweden.
    Wang, Xi Vincent
    KTH Royal Institute of Technology, Stockholm, Sweden.
    Schmidt, Bernard
    University of Skövde, School of Engineering Science. University of Skövde, The Virtual Systems Research Centre.
    Recent Advancements of Smart Manufacturing: An Example of Energy-Efficient Robot2016In: Proceedings of the 26th International Conference on Flexible Automation and Intelligent Manufacturing, 2016, p. 884-892Conference paper (Refereed)
    Abstract [en]

    The cloud technology provides sustainable solutions to the modern industrial robotic cells. Within the context, the objective of this research is to minimise the energy consumption of robots during assembly in a cloud environment. Given a trajectory and based on the inverse kinematics and dynamics of a robot from the cloud, a set of feasible configurations of the robot can be derived, followed by calculating the desirable forces and torques on the joints and links of the robot. Energy consumption is then calculated for each feasible configuration along the trajectory. The ones with the lowest energy consumption are chosen. Since the energy-efficient robot configurations lead to reduced overall energy consumption, this approach becomes instrumental and can be applied to energy-efficient robotic assembly.

  • 10124.
    Wang, Lihui
    et al.
    University of Skövde, The Virtual Systems Research Centre. University of Skövde, School of Technology and Society.
    Nee, Andrew Y. C.
    Collaborative Design and Planning for Digital Manufacturing2009Collection (editor) (Other academic)
  • 10125.
    Wang, Lihui
    et al.
    University of Skövde, School of Technology and Society. University of Skövde, The Virtual Systems Research Centre.
    Ng, Amos H. C.University of Skövde, School of Technology and Society. University of Skövde, The Virtual Systems Research Centre.Deb, KalyanmoyUniversity of Skövde, School of Technology and Society. University of Skövde, The Virtual Systems Research Centre.
    Multi-objective Evolutionary Optimisation for Product Design and Manufacturing2011Collection (editor) (Refereed)
  • 10126.
    Wang, Lihui
    et al.
    University of Skövde, School of Engineering Science. University of Skövde, The Virtual Systems Research Centre. Department of Production Engineering, Royal Institute of Technology, Stockholm, Sweden.
    Schmidt, Bernard
    University of Skövde, School of Engineering Science. University of Skövde, The Virtual Systems Research Centre.
    Givehchi, Mohammad
    Department of Production Engineering, Royal Institute of Technology, Stockholm, Sweden.
    Adamson, Göran
    University of Skövde, School of Engineering Science. University of Skövde, The Virtual Systems Research Centre.
    Robotic Assembly Planning and Control with Enhanced Adaptability through Function Blocks2015In: The International Journal of Advanced Manufacturing Technology, ISSN 0268-3768, E-ISSN 1433-3015, Vol. 77, no 1-4, p. 705-715Article in journal (Refereed)
    Abstract [en]

    Manufacturing companies today need to maintain a high level of flexibility and adaptability to deal with uncertainties on dynamic shop floors, including e.g. cutting tool shortage, part supply interruption, urgent job insertion or delay, and machine unavailability. Such uncertainties are characteristic in component assembly operations. Addressing the problem, we propose a new method using function blocks to achieve much improved adaptability in assembly planning and robot control. In this paper, we propose to use event-driven function blocks for robotic assembly, aiming to plan trajectory and execute assembly tasks in real-time. It is envisioned that this approach will achieve better adaptability if applied to real-world applications.

  • 10127.
    Wang, Lihui
    et al.
    University of Skövde, School of Technology and Society. University of Skövde, The Virtual Systems Research Centre. Department of Production Engineering, KTH Royal Institute of Technology, 100 44 Stockholm, Sweden.
    Schmidt, Bernard
    University of Skövde, School of Technology and Society. University of Skövde, The Virtual Systems Research Centre.
    Nee, Andrew Y. C.
    Department of Mechanical Engineering, National University of Singapore.
    Vision-guided active collision avoidance for human-robot collaborations2013In: Manufacturing Letters, ISSN 2213-8463, Vol. 1, no 1, p. 5-8Article in journal (Refereed)
    Abstract [en]

    This paper reports a novel methodology of real-time active collision avoidance in an augmented environment, where virtual 3D models of robots and real camera images of operators are used for monitoring and collision detection. A prototype system is developed and linked to robot controllers for adaptive robot control, with zero robot programming for end users. According to the result of collision detection, the system can alert an operator, stop a robot, or modify the robot's trajectory away from an approaching operator. Through a case study, it shows that this method can be applied to real-world applications such as human-robot collaborative assembly to safeguard human operators.

  • 10128.
    Wang, Lihui
    et al.
    University of Skövde, School of Technology and Society. University of Skövde, The Virtual Systems Research Centre.
    Song, Yijun
    University of Skövde, School of Technology and Society. University of Skövde, The Virtual Systems Research Centre.
    Gao, Qiaoying
    University of Skövde, School of Technology and Society. University of Skövde, The Virtual Systems Research Centre.
    Designing function blocks for distributed process planning and adaptive control2009In: Engineering applications of artificial intelligence, ISSN 0952-1976, E-ISSN 1873-6769, Vol. 22, no 7, p. 1127-1138Article in journal (Refereed)
    Abstract [en]

    The objective of this research is to develop methodologies and a framework for distributed process planning and adaptive control using function blocks. Facilitated by real-time monitoring system, the proposed methodologies can be applied to integrate with functions of dynamic scheduling in a distributed environment. A function block-enabled process planning approach is proposed to handle dynamic changes during process plan generation and execution. This paper focuses mainly on distributed process planning, particularly on the development of a function block designer that can encapsulate generic process plans into function blocks for runtime execution. As function blocks can sense environmental changes on a shop floor, it is expected that a so-generated process plan can adapt itself to the shop floor environment with dynamically optimized solutions for plan execution and process monitoring.

  • 10129.
    Wang, Lihui
    et al.
    Department of Production Engineering, KTH Royal Institute of Technology, Sweden.
    Wang, Wei
    University of Skövde, School of Engineering Science. University of Skövde, The Virtual Systems Research Centre. Department of Production Engineering, KTH Royal Institute of Technology, Sweden.
    Liu, Dawei
    AVIC Chengdu Aircraft Industrial (Group) Ltd. Co., China.
    Dynamic feature based adaptive process planning for energy-efficient NC machining2017In: CIRP annals, ISSN 0007-8506, E-ISSN 1726-0604, Vol. 66, no 1, p. 441-444Article in journal (Refereed)
    Abstract [en]

    This paper presents a dynamic feature based adaptive process planning approach that can optimise machining cost, machining time and energy consumption simultaneously. The material removal volume of a dynamic feature is refined into non-overlapping volumes removed respectively by a single machining operation in which unified cutting mode is performed. Benefitting from this refinement, energy consumption is estimated analytically based on instantaneous cutting force as a function of real cutting parameters. Moreover, the cutting parameters assigned to each machining operation are optimised effectively in the unified cutting mode. This novel approach enhances the energy efficiency of NC machining through process planning.

  • 10130.
    Wang, Lihui
    et al.
    University of Skövde, The Virtual Systems Research Centre. University of Skövde, School of Technology and Society.
    Yang, Xiaoyu
    School of Applied Science & Technology, Fanshawe College, London, ON, Canada.
    Assembly operator training and process planning via virtual systems2011In: International Journal of Sustainable Engineering, ISSN 1939-7038, E-ISSN 1939-7046, Vol. 4, no 1, p. 57-67Article in journal (Refereed)
    Abstract [en]

    In this paper, we present an integrated intuitive system for assembly operators training and assembly process planning by combining virtual reality with motion-tracking technologies. The developed conceptual prototype for assembly planning and training enables individuals to interact with a virtual environment in real time. It extends the new technologies of motion tracking and integrates them with virtual environment technologies to create real-time virtual work cell simulations in which assembly operators may be immersed with hands-on experiences. In addition to operators training, the experimental results to date are presented to demonstrate the potential contributions of human skills in achieving effective assembly planning including disassembly operations. It is expected that this approach will lead to environment-friendly and sustainable operations by conserving energy and cost that are first tested in a human-emerged virtual system.

  • 10131.
    Wang, Shu Mei
    et al.
    Key Laboratory of Public Health Safety, School of Public Health, Fudan University, China.
    Zou, Jin Liang
    Key Laboratory of Public Health Safety, School of Public Health, Fudan University, China.
    Gifford, Mervyn
    University of Skövde, School of Health and Education. University of Skövde, Health and Education.
    Dalal, Koustuv
    School of Health & Medical Sciences, Department of Public Health Science, Örebro University, Sweden.
    Young students' knowledge and perception of health and fitness: A study in Shanghai, China2014In: Health Education Journal, ISSN 0017-8969, E-ISSN 1748-8176, Vol. 73, no 1, p. 20-27Article in journal (Refereed)
    Abstract [en]

    Objective: This study investigated how young urban students conceptualize health and fitness and tried to identify their sources of information about health-related issues. The findings are intended to help make suggestions for policy makers to design and develop effective health-education strategies. Methods: Focus group discussions (FGDs) of 20 groups, each comprised of eight 10th-grade students, were carried out. In total 160 students participated in the FGDs. Results: Young students' knowledge and perceptions about health and fitness had certain limitations, although most of the students emphasized the importance of good health and felt that they knew the meaning of health and fitness. They were most concerned with physical health and failed to consider other aspects of health such as mental/psychological, behavioural and social aspects. This represents a lack of awareness of contemporary conceptions of health and illness. Conclusion: These findings are important when considering the design of effective high school health education strategies that meet state content standards and for influencing students to continue participating in health-promoting activities.

  • 10132.
    Wang, Shu-Mei
    et al.
    Fudan Univ, Sch Publ Hlth, Key Lab Publ Hlth Safety, Minist Educ, Shanghai 200433, Peoples R China .
    Dalal, Koustuv
    University of Skövde, School of Life Sciences.
    Road Traffic Injuries in Shanghai, China2012In: HealthMed, ISSN 1840-2291, Vol. 6, no 1, p. 74-80Article in journal (Refereed)
    Abstract [en]

    Road traffic injuries are major public health social and economic problem. In China road traffic injuries are increasing rapidly. Objective of the study was to assess the risk factors for road traffic injuries and the relationship between the individual and environmental factors and the severity of injury in a designated Safe Community in Shanghai, China. Data were retrieved from a Safe Community surveillance system including hospital, police and fire brigade records. Chi-square test and multivariate logistic regression were used. Total 568 was injured due to road accidents in 2008 (43% were mild injured and 9% severely injured).Violation of traffic rule was major problem among drivers of motorized vehicles. Police has identified 15 major causes of road accidents. Age over 45 years and cloudy/rainy road conditions were major cause of accidents at the individual and environmental level factors. Findings are important for policy makers and Safe Community planning.

  • 10133.
    Wang, Zhiyuan
    University of Skövde, School of Technology and Society.
    Study the relationship between real exchange rate and interest rate differential – United States and Sweden2007Independent thesis Advanced level (degree of Master (One Year)), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    This paper uses co-integration method and error-correction model to re-examine the relationship between real exchange rate and expected interest rate differentials, including cumulated current account balance, over floating exchange rate periods. As indicated by the dynamic model, I find that there is a long run relationship among the variables using Johansen co-integration method. Final conclusion is that the empirical evidence is provided to show that our error-correction model leads to a good real exchange rate forecast.

  • 10134.
    Wangchuk, Tshering
    University of Skövde, School of Informatics.
    Community-based Influence Maximization framework for Social Networks2018Independent thesis Advanced level (degree of Master (One Year)), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Maximizing Influence (IM) in social networks has a considerable role to play in the phenomenon of viral marketing, targeted advertisements and in promoting any campaigns. However, the Influence Maximization Problem is a very challenging research-problem due to it being NP-Hard and scaling with the social networks with millions of nodes and edges becomes very tough due to the computational complexities concerned with it. Recently, solving this problem through the use of community detection based methodology is becoming very popular since, it reduces the search space by dividing the network into smaller and more manageable groups called "communities." As part of the larger research work, we reiterate a framework which has been inspired by collection of different work done by Alfalahi et al. (2013) that we can implement to solve the IM problem and its limitation through community detection and fuzzy logic inspired approach. Since the work is still under development, for this project, we report on understanding the IM field through literature reviews and in communicating a design of IM framework as inspired by the previous works. We also present our version ofthe blueprint (Algorithm design) of the framework as a five step approach. For the purpose of this report, we implement and evaluated the step 1 and step 2 of the framework. Step 1 is about preprocessing the input network with a similarity measure, which according to previous study by Alfalahi et al. (2013a) aids the algorithms in detecting better community structure (clear and accurate distinction of the nodes into communities in networks). We test it to see if it holds true. Step 2 is about implementing the community detection in social network. We benchmarkthree candidate algorithms, chosen based on theirperformance, from the previous studies in community detection fieldand we report onwhich algorithm should we consider to use in the proposed framework through experimentationon the simulated data. We use Normalized Mutual Information (NMI) and Modularity (Q) as evaluation metrics to measure the accuracy of the community detected by the candidate algorithms. Our results show that similarity based preprocessing does not improve the community structure and thus may not be required in the framework. We also found out that Louvain should be the algorithm that use to detect communities in social networks since it outperforms both CNM and Infomap on Q and NMI

  • 10135.
    Wangler, Benkt
    et al.
    University of Skövde, School of Humanities and Informatics.
    Åhlfeldt, Rose-Mharie
    University of Skövde, School of Humanities and Informatics.
    Perjons, Erik
    Process Oriented Information Systems Architectures in Healthcare2003In: Health Informatics Journal, ISSN 1460-4582, Vol. 9, no 4, p. 253-265Article in journal (Refereed)
    Abstract [en]

    In order to create value for customers efficiently and to avoid unnecessary or redundant activity, organizations need IT support that interacts well with their business processes. In addition, healthcare organizations require transparent communication between the various actors and between IT systems. A new type of process oriented integration architecture has been developed using software devices known as process managers. These use simple graphical models to visualize business process integration and facilitate its management and monitoring. This article discusses the benefits and difficulties of introducing process manager technology into healthcare, based on a project to integrate IT systems over the patient process and across several organizations. Particular problems are caused by communication across organizational boundaries, e.g. due to security issues. However, the technology is able to manage and monitor processes and to make communication simpler and safer.

  • 10136.
    Warell, Annelie
    et al.
    University of Skövde, School of Technology and Society.
    Wising, Johanna
    University of Skövde, School of Technology and Society.
    Skapandet av narcissistiska karaktärer: En symbolisk interaktionistisk- samt kulturanalytisk tolkning av uppkomsten av narcissism2009Independent thesis Basic level (degree of Bachelor), 20 credits / 30 HE creditsStudent thesis
    Abstract [sv]

    Syftet med denna studie är att ge förståelse för de förklaringsmodeller som ges av informanter gällande sexualförbrytares tolknings- och beteendemönster analyserat utifrån ett symbolisk interaktionistiskt perspektiv och ett socialpsykologiskt samt kulturanalytiskt perspektiv på narcissism. Det som behandlas i studien är hur personal inom psykiatrin uppfattar att självet hos sexualförbrytare utvecklats samt hur detta beskrivs i de två dokument studien använder sig av och hur dessa utsagor kan tolkas utifrån ett symbolisk interaktionistiskt perspektiv på identitetsskapande. Vidare belyses hur sexualförbrytares tolknings- och beteendemönster kopplas till narcissism utifrån ett socialpsykologiskt och kulturanalytiskt perspektiv. Genomförandet av studien har skett med hjälp av triangulering i form av kvalitativa, semistrukturerade djupintervjuer med personal vid Skogomeanstalten samt analys utifrån två dokument (Hedin, Kuosmanen,Lindholm & Månsson, 2002; Kwarnmark & Tidefors Andersson, 1999) som behandlar sexualbrottsdömda vid Skogomeanstalten. Framkommit i studien har att primär- samt sekundärsocialisation är av stor vikt vid utvecklingen av narcissistiska karaktärsdrag samt att kulturella och sociala förhållanden påverkar formandet av just dessa karaktärsdrag. Studien har påvisat dessa narcissistiska karaktärsdrag hos vissa av de sexualförbrytare som undersökts.

  • 10137.
    Warenius, Linnéa
    et al.
    University of Skövde, School of Life Sciences.
    Pettersson, Karen O.
    Lund University, Lund, Sweden.
    Nissen, Eva
    University of Skövde, School of Life Sciences.
    Höjer, Bengt
    Dalarna University, Dalarna, Sweden.
    Chishimba, Petronella
    Kitwe School of Nursing, Kitwe, Zambia.
    Faxelid, Elisabeth
    Karolinska Institutet, Stockholm, Sweden.
    Vulnerability and sexual and reproductive health among Zambian secondary school students2007In: Culture, Health and Sexuality, ISSN 1369-1058, E-ISSN 1464-5351, Vol. 9, no 5, p. 533-544Article in journal (Refereed)
    Abstract [en]

    The present study aimed to explore secondary school students' needs in relation to sexual and reproductive health in order to inform efforts to improve the quality of health services available to young people. The study involved data collection from 716 11-22-year-old students in four secondary schools in an urban area in Zambia. Students completed a questionnaire and were invited to write down any inquiries they had regarding sexuality and reproduction. Findings revealed that boys and girls lack adequate information about human reproduction and STIs, including HIV. To avoid misconceptions and myths, they also need clear information on contraceptives and masturbation. Responses indicate that young people would welcome guidance and support related to contraception, pregnancy, abortion and STIs/HIV, but also on love and relationships. Culture, religion and gender are important factors influencing sexuality and sexual abuse. These issues need to be taken into consideration when developing youth-friendly programmes for young people

  • 10138.
    Warenius, Linnéa U.
    et al.
    Division of International Health, Department of Public Health Sciences, Karolinska Institute, Stockholm, Sweden.
    Faxelid, Elisabeth A.
    Division of International Health, Department of Public Health Sciences, Karolinska Institute, Sweden.
    Chishimba, Petronella N.
    Kitwe School of Nursing, Kitwe, Zambia.
    Musandu, Joyce O.
    Department of Nursing Sciences, University of Nairobi, Nairobi, Kenya.
    Ong'any, Antony A.
    Department of Nursing Sciences, University of Nairobi, Kenya.
    Nissen, Eva B.-M.
    University of Skövde, School of Life Sciences.
    Nurse-Midwives' Attitudes towards Adolescent Sexual and Reproductive Health Needs in Kenya and Zambia2006In: Reproductive health matters, ISSN 0968-8080, E-ISSN 1460-9576, Vol. 14, no 27, p. 119-128Article in journal (Refereed)
    Abstract [en]

    Adolescent sexuality is a highly charged moral issue in Kenya and Zambia. Nurse-midwives are the core health care providers of adolescent sexual and reproductive health services but public health facilities are under-utilised by adolescents. The aim of this study was to investigate attitudes among Kenyan and Zambian nurse-midwives (n=820) toward adolescent sexual and reproductive health problems, in order to improve services for adolescents. Data were collected through a questionnaire. Findings revealed that nurse-midwives disapproved of adolescent sexual activity, including masturbation, contraceptive use and abortion, but also had a pragmatic attitude to handling these issues. Those with more education and those who had received continuing education on adolescent sexuality and reproduction showed a tendency towards more youth-friendly attitudes. We suggest that critical thinking around the cultural and moral dimensions of adolescent sexuality should be emphasised in undergraduate training and continuing education, to help nurse-midwives to deal more empathetically with the reality of adolescent sexuality. Those in nursing and other leadership positions could also play an important role in encouraging wider social discussion of these matters. This would create an environment that is more tolerant of adolescent sexuality and that recognises the beneficial public health effect for adolescents of greater access to youth-friendly sexual and reproductive health services.

  • 10139.
    Wark, Landon
    et al.
    Cell Biology, University of Manitoba, CancerCare Manitoba, Winnipeg, Canada / Department of Human Anatomy and Cell Sciences, University of Manitoba, Winnipeg, Canada.
    Klonisch, Thomas
    Department of Human Anatomy and Cell Sciences, University of Manitoba, Winnipeg, Canada / Medical Microbiology and Infectious Diseases, Department of Oncology, University of Calgary, Calgary, Alberta, Canada.
    Awe, Julius
    University of Skövde, School of Health and Education. Cell Biology, University of Manitoba, CancerCare Manitoba, Winnipeg, Canada / Department of Clinical Genetics, Institute of Biomedicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.
    LeClerc, Cecile
    Cell Biology, University of Manitoba, CancerCare Manitoba, Winnipeg, Canada.
    Dyck, Brandon
    Cell Biology, University of Manitoba, CancerCare Manitoba, Winnipeg, Canada.
    Quon, Harvey
    Department of Oncology, University of Calgary, Calgary, Alberta, Canada / CancerCare Manitoba, Winnipeg, Manitoba, Canada / Tom Baker Cancer Centre, Calgary, Alberta, Canada.
    Mai, Sabine
    Cell Biology, University of Manitoba, CancerCare Manitoba, Winnipeg, Canada / Department of Human Anatomy and Cell Sciences, University of Manitoba, Winnipeg, Canada / Department of Oncology, University of Calgary, Calgary, Alberta, Canada.
    Dynamics of three-dimensional telomere profiles of circulating tumor cells in patients with high-risk prostate cancer who are undergoing androgen deprivation and radiation therapies2017In: Urologic Oncology, ISSN 1078-1439, E-ISSN 1873-2496, Vol. 35, no 3, p. 112.e1-112.e11Article in journal (Refereed)
    Abstract [en]

    Introduction: Accurate assessment and monitoring of the therapeutic efficacy of locally advanced prostate cancer remains a major clinical challenge. Contrary to prostate biopsies, circulating tumor cells (CTCs) are a cellular source repeatedly obtainable by blood sampling and could serve as a surrogate marker for treatment efficacy. In this study, we used size-based filtration to isolate and enumerate CTCs from the blood of 20 patients with high-risk (any one of cT3, Gleason 810, or prostate-specific antigen>20 ng/ml), nonmetastatic, and treatment-naive prostate cancer before and after androgen deprivation therapy (ADT) and radiation therapy (RT).

    Materials and methods: We performed 3D telomere-specific quantitative fluorescence in situ hybridization on isolated CTCs to determine 3D telomere profiles for each patient before and throughout the course of both ADT and RT.

    Results: Based on the distinct 3D telomere signatures of CTC before treatment, patients were divided into 3 groups. ADT and RT resulted in distinct changes in 3D telomere signatures of CTCs, which were unique for each of the 3 patient groups.

    Conclusion: The ability of 3D telomere analysis of CTCs to identify disease heterogeneity among a clinically homogeneous group of patients, which reveals differences in therapeutic responses, provides a new opportunity for better treatment monitoring and management of patients with high-risk prostate cancer. 

  • 10140.
    Warnskog, Louise
    et al.
    University of Skövde, School of Health and Education.
    Brännlund, Hanna
    University of Skövde, School of Health and Education.
    Kvinnors upplevelser av att leva med Endometrios: En litteraturbaserad studie2015Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Bakgrund: Endometrios är en kronisk kvinnosjukdom där livmoderslemhinnan växer utanför livmodern. Detta resulterar i inre blödningar och bäckensmärta. Syfte: Att belysa kvinnors upplevelser av att leva med Endometrios. Metod: En litteraturbaserad studie baserad på analys av 12 vetenskapliga artiklar. Resultat: Det framkom två huvudteman, Endometrios den avfärdade sjukdomen samt Faktorer som påverkar livet för kvinnor som lever med Endometrios. Resultatet från detta examensarbete påvisar att Endometrios har stor inverkan på kvinnors liv och resulterar i lidande då diagnosen fördröjs. Sjuksköterskan har en viktig roll när det gäller att ge kvinnorna rätt vård. Diskussion: Det finns ett flertal olika miljö- och stressfaktorer som inverkar på kvinnors upplevelser av Endometrios. Flertalet av dessa skulle kunna förebyggas genom utbildning av vårdpersonal och information om Endometrios till allmänheten. Publiciteten skulle i stor utsträckning minska de drabbade kvinnornas lidande. Kliniska implikationer: Endometrios klassas i nuläget inte som en folkhälsosjukdom och har inget vårdprogram. Socialstyrelsen behöver utarbeta ett specifikt vårdprogram för sjukdomen. Vårdpersonalen kan då känna minskad osäkerhet kring Endometrios.

  • 10141.
    Warrén Stomberg, Margareta
    University of Skövde, School of Life Sciences. Institute of Health and Care Sciences, The Sahlgrenska Academy at Göteborg University, Göteborg, Sweden.
    Guest at Hospice: Time for Consideration2009In: The American Journal of Hospice and Palliative Medicine, ISSN 1049-9091, Vol. 26, no 4, p. 277-280Article in journal (Refereed)
    Abstract [en]

    This study focuses on daily life situation of terminally ill guests residing at a hospice. In the study, interviews were conducted with 9 such guests. Data were analyzed using a method similar to content analysis. Categories emerged that were related to aspects regarding as external and internal essentials for the well-being of the individual at the hospice. These essentials were as follows: encouragement from the staff, the alleviation of pain, a pleasant and calm atmosphere at the hospice, the significance of visits from relatives, the regret of not being able to take care of oneself, and time to reconcile to one's life. These results not only show the need for close community with both family and staff but also the need for privacy to reflect on life.

  • 10142.
    Warrén Stomberg, Margareta
    et al.
    University of Skövde, School of Life Sciences. The Sahlgrenska Academy, University of Gothenburg, Sweden.
    Nilsson, Kerstin
    University of Skövde, School of Life Sciences. The Sahlgrenska Academy, University of Gothenburg, Sweden.
    Nursing Students' Self-Graded Motivation to Complete their Programme of Study2010In: Open Nursing Journal, ISSN 1874-4346, E-ISSN 1874-4346, Vol. 4, p. 42-47Article in journal (Refereed)
    Abstract [en]

    The aim of this study was to explore variation in nursing students’ motivation to complete their programme of study,  as  well  as  factors  relating  to  low  versus  high  motivation  and  students’  opinions  of  what  would  increase  their motivation to complete their programme of study. A study was carried out between April 2006 and December 2007. A total of 872 students registered in a 3-year nursing programme  randomly  participated  in  self-rating  their  motivation  score  once  each  semester.  Descriptive  statistics, statistical calculations and content analysis regarding open-ended questions were performed. Most of the students, 73%, rated their motivation as ≥6 on a 0-10 Likert scale; and 16% gave a rating of ≤4. The desire to become  a registered nurse (RN)  and having  a positive  attitude towards the  studies were  the main factors influencing high motivation to complete the programme of study. Having a negative attitude towards the studies was an explanation of decreased motivation. There was a significant decrease (p=0.001) in the motivation score with respect to number of semesters, and motivation increased with the student’s age (p=0.0119). Suggestions for increasing motivation given by those who rated their motivation as ≤4 mainly focused on improvements in didactics and study organisation.

  • 10143.
    Warrén Stomberg, Margareta
    et al.
    University of Skövde, School of Life Sciences.
    Tronstad, Svein - Erik
    Skaraborgs Hosp Skövde, Dept Obstet & Gynecol, SE-54185 Skövde, Sweden.
    Hedberg, Karin
    Department of Health Employment, Hälsan och arbetslivet, Skövde, Sweden.
    Bengtsson, Jan
    University of Skövde, School of Life Sciences.
    Jonsson, Peter
    University of Skövde, School of Life Sciences.
    Johansen, Lars
    Skaraborgs Hosp Skövde, Dept Surg, SE-54185 Skövde, Sweden.
    Lindvall, Birgitta
    University of Skövde, School of Life Sciences.
    Work-related musculoskeletal disorders when performing laparoscopic surgery.2010In: Surgical laparoscopy, endoscopy & percutaneous techniques, ISSN 1530-4515, E-ISSN 1534-4908, Vol. 20, no 1, p. 49-53Article in journal (Refereed)
    Abstract [en]

    Aim: The aim of this study was to survey the occurrence of musculoskeletal disorders in the population of gynecologists and general surgeons performing laparoscopic surgery.

    Methods: A questionnaire was distributed to 558 general surgeons and gynecologists and 378 were answered (68%). Descriptive data analysis and statistical calculations were performed.

    Results: One or more disturbing symptoms were common among laparoscopists. More than 70% of the laparoscopists had one or more symptom. Pain was the most common symptom followed by fatigue and stiffness. Lower back, neck, and shoulders were most frequently affected. Headache and visual discomfort were also reported. Longer workload over time and ageing resulted in significantly more disorders (P<0.01). Female physicians had significantly more disorders (P<0.01).

    Conclusions: This study revealed musculoskeletal disorders in a majority of laparoscopists. The laparoscopic technique often requires static and tiring work positions, sometimes extreme, which can explain musculoskeletal disorders among general surgeons and gynecologist.

  • 10144.
    Warrén-Stomberg, Margareta
    University of Skövde, School of Life Sciences.
    Observation vid anestesi ger viktig kunskap2006In: Vårdfacket, ISSN 0347-0911, Vol. 30, no 3, p. 55-56Article in journal (Other (popular science, discussion, etc.))
  • 10145.
    Warrén-Stomberg, Margareta
    University of Skövde, School of Life Sciences.
    Postoperativ smärta2005In: Incitament, ISSN 1103-503X, Vol. 14, no 2, p. 211-213Article in journal (Refereed)
    Abstract [en]

    Trots att det idag finns kraftfulla och skonfulla läkemedel, tekniker och kunskap som möjliggör smärtlindring, upplever omkring 50% av patienterna moderat till svår smärta efter operation. Akut smärta efter kirurgisk intervention kan utlösa ogynnsamma effekter. Det är med andra ord fortfarande angeläget att vidareutveckla den postoperativa smärthanteringen. Denna avhandling fokuserar på möjligheter att optimera smärthanteringen efter operation.

  • 10146.
    Warrén-Stomberg, Margareta
    University of Skövde, School of Life Sciences.
    Postoperative pain management: Nurse perspectives on acute pain services2004Doctoral thesis, comprehensive summary (Other academic)
    Abstract [en]

    Postoperative pain management (POPM) has remained an area of concern despite major efforts to improve pain assessment and management by the introduction of specified guidelines, advanced techniques for pain alleviation, and education of staff members. Different nurse specialists are involved in the perioperative care of surgical patients. It is still not known to what extent the specific information noted by the nurses about the individual surgical patient at the different steps of the perioperative management is taken into consideration so that a potentially more optimal, individualised POPM as part of acute pain services (APS) can be provided.

    The aims of the present study were to assess if information of potential value for the POPM is noted by nurse anaesthetists involved in the perioperative management of surgical patients and to what extent such information could be of value for an individualised POPM of surgical patients and if nurse involvement is of importance for the adequacy and efficacy of POPM routines in a nurse-based, anaesthesiologist-supervised acute pain service (APS) model on surgical wards.

    Semistructured interviews of nurse anaesthetists (n=40), questionnaire responses of staff members (n=375)/surgical patients (n=110) and assessment of medical records (n=135)/database data (n=222) were included for evaluation of factors of importance in the perioperative care and POPM of surgical patients. Descriptive statistics, non-parametric and parametric tests were used for the analysis of the data.

    It was found that nurse anaesthetists continuously monitor different stress evoked physiological signs induced by surgical interventions during general anaesthesia. Nurses considered the signs indicative of pain evoked stimuli and/or insufficient depth of anaesthesia. The intraoperative information of the response pattern and anaesthetic drug requirements of the individual patient noted by the nurse anaesthetist was considered at present not to be routinely taken into consideration but could be a successful strategy in an optimal multi-professional approach to postoperative pain management. The introduction of APS, using a nurse-based anaesthesiologist-supervised model, resulted in more adequate pain management routines, better patient satisfaction with information about POPM, and increased confidence in pain management among nurses on the surgical wards than was noted for the outcome data for the hospital not having introduced such an APS model. Database documentation of outcome measures of POPM for patients receiving postoperative epidural analgesia was found to provide valuable information about the adequacy of the POPM. The feedback of information from the anaesthesia services to the surgical ward nurses was found not to be efficient enough to make ward nurses properly aware of the importance of their own direct involvement in the documentation process of POPM and that such involvement could further optimise POPM outcome

  • 10147.
    Warrén-Stomberg, Margareta
    University of Skövde, School of Life Sciences.
    Postoperative pain management: Nurse perspectives on acute pain services2005In: Smärta, ISSN 1402-1048, Vol. 10, no 1, p. 5-6Article in journal (Other (popular science, discussion, etc.))
  • 10148.
    Warrén-Stomberg, Margareta
    University of Skövde, School of Life Sciences.
    Specialistsjuksköterskan viktig för nyopererades smärtlindring2005In: Perspektiv på högskolan i Skövde, ISSN 1653-8242, Vol. 1, no 2, p. 16-17Article in journal (Other (popular science, discussion, etc.))
    Abstract [en]

    Det är viktigt med kontinuerlig kommunikation mellan all personal som bedömer, behandlar och dokumenterar patientens smärta i samband med kirurgi. Här har specialistsjuksköterskan en viktig roll för att föra information om patienten vidare. Det visar en avhandling från Sahlgrenska akademin.

  • 10149.
    Warrén-Stomberg, Margareta
    et al.
    University of Skövde, Department of Health Sciences.
    Haljamäe, Hengo
    Department of Anaesthesiology and Intensive Care, Sahlgrenska University Hospital, Göteborg.
    Acute pain services2003In: Current Anaesthesia and Critical Care, ISSN 0953-7112, E-ISSN 1532-2033, Vol. 14, no 5-6, p. 211-215Article in journal (Refereed)
    Abstract [en]

    An interdisciplinary acute pain service (APS) team seems the most attractive clinical organization model for postoperative pain management (POPM) to fulfil the intentions of pain management guidelines in practice. The specific knowledge of anaesthesiologists in the use of drugs and techniques for pain alleviation is of specific importance. Therefore, the anaesthetist is usually the team leader and works together with nurses in the postanaesthesia care unit (PACU), acute pain nurses (APN) and surgical ward nurses. A nurse-based anaesthesiologist supervised type of APS seems in several respects to be a suitable model for POPM in clinical practice.

  • 10150.
    Warrén-Stomberg, Margareta
    et al.
    University of Skövde, School of Life Sciences.
    Haljamäe, Hengo
    Department of Anaesthesiology and Intensive Care, Sahlgrenska University Hospital, Göteborg.
    Postoperative pain management: impact of quality assurance and audit documentation on clinical outcome2003In: Current Anaesthesia & Critical Care, ISSN 0953-7112, Vol. 14, no 5-6, p. 217-221Article in journal (Refereed)
    Abstract [en]

    Progress in postoperative clinical pain assessment and management is not only dependent on optimal choice of analgesic drugs and techniques but also of quality assurance of the clinical routines, i.e. the overall organization of the acute pain services. Proper revision of present routines on the basis of accepted quality assurance standards and practice guidelines on pain management is an essential part of improved postoperative pain management. The present survey reflects the impact of organizational revision of pain management routines on the audit of pain management and on the attitudes of staff members involved in the acute pain service. Monitoring and documentation of relevant audit variables are essential and such outcome variables should continuously be analysed and constitute a feedback channel between all staff members involved in the APS so that remaining problems can be identified and properly managed

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