| 1. |
- Campos, Jaime, et al.
(författare)
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Information System Requirements Elicitation for Gravel Road Maintenance : A Stakeholder Mapping Approach
- 2020
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Ingår i: Advances in Asset Management and Condition Monitoring. Smart Innovation, Systems and Technologies. - Cham : Springer. - 9783030577445 - 9783030577452 ; , s. 377-387
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Bokkapitel (refereegranskat)abstract
- Gravel road maintenance is a complex endeavour comprising physical, technical and social aspects that have to be considered, and resources to be coordinated. The maintenance requirements are affected by weather conditions, geography, and traffic frequency, but also by the physical properties of the road and the previous maintenance performance. The physical properties and maintenance requirements are area dependent; in Northern Europe, ground frost, for instance, is a problem, while flooding is a problem in East Asia. Understanding the specific context-dependent variables is therefore important when designing a maintenance information system. In this paper, the maintenance information system requirements are identified focusing on the Swedish gravel road ecosystem. The system elicitation process is crucial to be able to specify the requirements of the future system and its users, and in this paper, a stakeholders’ approach is utilized. Different stakeholders are described, including their maintenance related needs, information needs, and roles in the maintenance system. The interdependencies between different stakeholders are also illustrated in an ecosystem diagram. From these descriptions, requirements for computerized maintenance management systems are elicited, and main users are identified. User scenarios are thereafter illustrated using the User Case technique.
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| 2. |
- Claesson, Ingvar, et al.
(författare)
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Method and a device for vibration control
- 2004
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Patent (populärvet., debatt m.m.)abstract
- A device for vibration control in a machine for internal turning uses a cutting tool supported by a tool holder, and has a control unit, a vibration sensor connectible to the control unit, and an actuator connectible to the control unit. The actuator has an active element, which converts an A.C. voltage supplied by the control unit to the actuator into dimensional changes. The active element is adapted to be embedded in the body of the tool holder, and is adapted to be embedded in such a manner that the dimensional changes impart bending to the body of the tool holder. A method for vibration control in internal turning and a tool holder for internal turning are provided.
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| 3. |
- Claesson, Ingvar, et al.
(författare)
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Method and device for vibration control
- 2008
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Patent (populärvet., debatt m.m.)abstract
- A device and method for vibration control in a machine for cutting, said machine comprising a cutting tool supported by a tool holder. The device comprises a control unit and converting means which are connectible to the control unit and comprise a vibration sensor and an actuator. The actuator comprises an active element which converts an A.C. voltage supplied by the control unit to the actuator into dimensional changes. Said active element is adapted to be embedded in the body of the tool holder and in such manner that said dimensional changes impart bending to the body of the tool holder.
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| 4. |
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| 5. |
- Claesson, Lena, 1964-
(författare)
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Remote laboratories in STEM education : Strategies and methods for implementation
- 2023
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- During a substantial part of their time young people of today live in an online world. The medial evolution has also influenced education and today much research work concerns the transfer of the physical world into the online one. One example is laboratories in science, technology, engineering, and mathematics (STEM) education that are available in online rooms. They enable students to be at home in front of a computer and on-screen watch and operate the physical equipment in the laboratory at school. It is a general agreement that laboratory lessons are necessary in subjects such as physics, chemistry and biology. Physical experiments provide a great way for students to learn more about nature and its possibilities as well as limitations. Experimental work can be provided by laboratories in three different categories; 1) hands-on, 2) remote and 3) simulated.This thesis addresses how to implement remote laboratories as a teaching methodology. It presents examples of upper secondary school students’ experimental work and their evaluation of remote laboratories regarding usability, sense of reality and technical problems. In order to gain a better understanding of the situation and needs regarding laboratory activities in an upper secondary school, eight physics teachers were interviewed at six different schools. Furthermore, 165 upper secondary school students answered a questionnaire survey regarding subject preferences, program choices, views on technology and self-ability, and their approach to technology and technology-related situations. This thesis also describes another education approach where academia, industry, and research institutes cooperate around the development and implementation of master level courses. The pedagogical approach utilized in these master level courses has been flipped classroom.In this thesis, the usage of remotely controlled laboratories in physics education at an upper secondary school and a university are addressed. The main objective of this project is to investigate the feasibility of using the Virtual Instruments System in Reality (VISIR) technology for remotely controlled laboratories, developed at Blekinge Institute of Technology, in upper secondary schools. The laboratory setup can be shared and utilized almost 24/7, thus reducing the associated costs and eliminating time restrictions.
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| 6. |
- Claesson, Lena, et al.
(författare)
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Remote laboratory experiments at the Upper Secondary School Katedralskolan in LUND
- 2010
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Ingår i: International Conference on Remote Engineering and Virtual Instrumentation (REV2010).
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Konferensbidrag (refereegranskat)abstract
- This paper is intended for people who are interested in using online remote laboratories in education. Blekinge Institute of Technology (BTH) have started a cooperation together with the Upper Secondary School, Katedralskolan, in Lund, Sweden. The purpose of the cooperation is to introduce remote laboratory environment for students at Katedralskolan. A remote laboratory (RL) in electronic is used as a complement to the traditional workbench. It is open 24/7 and the students can carry out laboratory assignments without any risks of damaging any equipment. When a student is familiar with the instruments and components in a laboratory assignment, and carried out parts of the experiments in the hands-on laboratory in school she/he may use the RL to finish the laboratory assignment. The students may also carry out additional experiments remote laboratory or use it to prepare for an exam.
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| 7. |
- Claesson, Lena, et al.
(författare)
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STEM Education on Equal Terms Through the Flipped Laboratory Approach
- 2021
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Ingår i: Cross Reality and Data Science in Engineering. - Cham : Springer. - 9783030525743 - 9783030525750 ; , s. 46-62
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Konferensbidrag (refereegranskat)abstract
- The educational phenomena studied in this paper is remote-controlled physical laboratory environments and their applicability in upper secondary school physics education. In order to gain a better understanding of the situation and needs regarding laboratory activities in the upper secondary school, eight physics teachers were interviewed at six different schools. This revealed that the resources for laboratory activities vary between schools and may be inconsistent with the Swedish National Agency for Education curriculum. Furthermore, 165 upper secondary school students answered a questionnaire survey regarding subject preferences, program choices, views on technology and self-ability, and approach to technology and technology-related situations. The acquired knowledge provides a basis concerning the needs and conditions of teaching and learning within the subject of physics. This new knowledge motivates the development of the Flipped laboratory concept that is introduced in this paper, based on remote-controlled physical laboratories, for upper secondary school. © 2021, Springer Nature Switzerland AG.
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| 8. |
- Claesson, Lena, et al.
(författare)
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Using an Online Remote Laboratory for Electrical Experiments in Upper Secondary Education
- 2012
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Ingår i: International Journal of Online Engineering. - : Kassel University Press GmbH. - 1868-1646 .- 1861-2121. ; 8:Special Issue, s. 24-30
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Tidskriftsartikel (refereegranskat)abstract
- The use of remote laboratories in courses at university level has been reported in literature numerous times since the mid 90?s. In this article focus is on activities carried out by teachers and students, at the Upper Secondary School Level, using the remote laboratory VISIR (Virtual Instrument Systems in Reality). The Upper Secondary School, Katedralskolan in Lund, Sweden, cooperate with Blekinge Institute of Technology, Sweden, in a project that concerns the introduction of remote laboratory environment suitable for Upper Secondary School science courses. A remote laboratory in electronics has been introduced and is used as a complement to the traditional workbench in the hands-on laboratory. Significant results from the project are; 1) the great interest shown by the students for the remote experiments, 2) the students appreciation for the fact that it was not simulations but actual real experiments, 3) the remote laboratory is easy to implement for use by both teachers and students and 4) it can be used simultaneously by many students.
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| 9. |
- Eriksson, Kristina, et al.
(författare)
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Experiences in Running a Professional Course on Digitally-Enabled Production in Collaboration Between Three Swedish Universities
- 2022
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Ingår i: Advances in Transdisciplinary Engineering, Volume 21. - : IOS Press. - 9781614994398 ; , s. 653-664
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Konferensbidrag (refereegranskat)abstract
- Needs for new competences and knowledge arise as industry 4.0 evolves in increasingly digitalized production. This development entails that job transformations and future skills need attention from the perspective of industry 5.0, where human and machine find ways of working together to improve production performance. Facing this perspective, one challenge is a growing need for novel lifelong learning initiatives, to meet emerging and altering occupations for the fulfilment of future skill requirements. This challenge is addressed here by portraying a case where three Swedish universities have formed a distinctive collaboration to develop a flexible (i.e. blended) course for professionals, in the subject of Digitally-enabled production. The purpose is to develop a sustainable collaboration between the universities and create a course format on master level addressing lifelong learning for the increasingly digitalized production. The ambition is to increase the impact of the universities respective efforts by sharing resources and utilizing individual specialized expertise to develop a practical and relevant course that can reach a larger target group. The course encompasses industry 4.0 readiness on three levels of production systems; plant-, production cell-, and component level; to adopt a holistic view of digitalization in production. We followed an action research approach for continuously collecting and documenting our experiences during the course development, implementation, and dissemination of the course. Within the frame of action research, an explorative case study describes and analyzes the initiative. The results highlight challenges and opportunities for succeeding with this form of co-produced course. The joint course gives professionals possibilities to work on cases from their own companies with expert supervision from three manufacturing levels to address complex challenges in industry 4.0 implementation. To conclude, the importance of lifelong learning in relation to the human-centric approach of industry 5.0 is emphasized as a future direction.
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