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- Rachmeler, L. A., et al.
(author)
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Quiet Sun Center to Limb Variation of the Linear Polarization Observed by CLASP2 Across the Mg ıı h and k Lines
- 2022
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In: Astrophysical Journal. - : American Astronomical Society. - 0004-637X .- 1538-4357. ; 936:1
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Journal article (peer-reviewed)abstract
- The CLASP2 (Chromospheric LAyer Spectro-Polarimeter 2) sounding rocket mission was launched on 2019 April 11. CLASP2 measured the four Stokes parameters of the Mg ıı h and k spectral region around 2800 Å along a 200'' slit at three locations on the solar disk, achieving the first spatially and spectrally resolved observations of the solar polarization in this near-ultraviolet region. The focus of the work presented here is the center-to-limb variation of the linear polarization across these resonance lines, which is produced by the scattering of anisotropic radiation in the solar atmosphere. The linear polarization signals of the Mg ıı h and k lines are sensitive to the magnetic field from the low to the upper chromosphere through the Hanle and magneto-optical effects. We compare the observations to theoretical predictions from radiative transfer calculations in unmagnetized semiempirical models, arguing that magnetic fields and horizontal inhomogeneities are needed to explain the observed polarization signals and spatial variations. This comparison is an important step in both validating and refining our understanding of the physical origin of these polarization signatures, and also in paving the way toward future space telescopes for probing the magnetic fields of the solar upper atmosphere via ultraviolet spectropolarimetry.
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| 5. |
- Matzen, D., et al.
(author)
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Comparison of design research on manufacturing firms moving towards services
- 2007
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In: Proceedings of ICED 2007, the 16th International Conference on Engineering Design. - 1904670024 - 9781904670025
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Conference paper (peer-reviewed)abstract
- Corresponding to a steadily advancing integration of products and service operations in the manufacturing industry, a number of research groups within the design community are working with issues of integrated product and service development. Although closely related, the evolving groups focus on different research dimensions, and thus the terminologies and concepts used in research contributions are not fully compatible. This research attempts to promote and support an evolving collaboration between the different research groups within the design community, by analysing and comparing the key contribution areas of three of the existing groups, namely the groups of Integrated Product and Service Engineering, Service/Product Engineering and Product/Service-System development. A review of the groups' research contributions is carried out and the main characteristics' of their research is compared. Furthermore a comparative table of concepts and terms used in the contributions of the three groups in compiled. Based on this comparison, 3 focal research dimensions are identified: the product lifecycle dimension, the customer lifecycle dimension and the provider lifecycle dimension. Finally the research domains' linkages to other related research domains outside the design community are identified.
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| 7. |
- Sakao, T., et al.
(author)
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AI-LCE : Adaptive and Intelligent Life Cycle Engineering by applying digitalization and AI methods-An emerging paradigm shift in Life Cycle Engineering
- 2021
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In: Procedia CIRP. - : Elsevier B.V.. - 2212-8271. ; , s. 571-576
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Conference paper (peer-reviewed)abstract
- This paper presents a vision for a much-needed paradigm shift in Life Cycle Engineering (LCE), which is termed Adaptive and Intelligent Life Cycle Engineering (AI-LCE). To do so, interdisciplinary analysis of literature in domains of AI and LCE is performed. Needed concepts and methods are described: key enabling technologies are Artificial Intelligence (AI), the Internet of Things, and data lakes, which are becoming cost-effective and increasingly implemented in industry. Both artificial and human intelligence are used in combination. Its advantages compared with the conventional LCE include shorter time for changing activities in the lifecycle and the accuracy of changes made.
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| 8. |
- Sakao, T., et al.
(author)
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Framing research for service orientation of manufacturers through PSS approaches
- 2009
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In: Journal of Manufacturing Technology Management. - : Emerald. - 1741-038X .- 1758-7786. ; 20:5, s. 754-778
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Journal article (peer-reviewed)abstract
- Purpose: In order to respond to the industrial trend towards service design and delivery, research must address a vast area partially related to value creation, marketing and network theories. However, compared to the space to be explored, there is little insight available. Thus, the purpose of this paper, as a first step, is to propose a way to frame such research. Design/methodology/ approach: An extensive literature review is performed of over 100 articles on product/service system (PSS) in general, service design, innovation, and business models in a broad view. Then, the analysis from the authors' viewpoint is carried out to give a frame. Findings: The paper presents three crucial dimensions for service-orientation research, i.e. an offer dimension representing products and services, a provider dimension, and a customer/user dimension. In addition, three research targets are proposed: PSS-offer modelling, PSS development and PSS potential. Furthermore, several promising future research directions are identified. These include evaluating economic consequences or environmental benefits, establishing terminology, organizational issues, and developing methods and tools to support designers. Originality/value: The paper presents a way of viewing research for service orientation, which contributes especially to further research in this area.
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