| 61. |
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| 62. |
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| 63. |
- Engström, Tomas, 1950, et al.
(författare)
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The Volvo Uddevalla Plant and Interpretations of Industrial Design Processes
- 1998
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Ingår i: Integrated Manufacturing Systems. ; 9:5, s. 279 - 295
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Tidskriftsartikel (refereegranskat)abstract
- This article explains exactly how the design of the Volvo Automobile Company's assembly plant in Uddevalla gradually was forced into the final unorthodox (real-life) assembly system, this due to a number of successive sub-decisions. The logic of the projection process was inescapable leading into practicing of the parallel product flow assembly system design (small parallel workgroups were all of them completing total automobiles (this at an extensively long work cycle times) (the minimum competence required for the operators performing assembly work were 1/4 of an automobile). This was, in fact, a design that was international unique. The Volvo Truck Company's so-called assembly docks located at the Tuve plant in Gothenburg, was the other such sociotechnically advance (real-life) assembly system (i.e. used for completing heavy truck chassis) (two of the tree authors were responsible for both these two (real-life) efforts by means of having an experimental workshop outside Chalmers University of Technology for nine years – though naturally with extensive help and active support from both these two companies, as well as by research funds (i.e. The Swedish Work Environment Fund and later on also by The Swedish Transport and Communication Research Board, i.e. at Chalmers than this shop was closed down) (it ought to be mentioned that this article has got an academic distinction from the journal for being the year’s most interesting article).
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| 64. |
- Engström, Tomas, 1950, et al.
(författare)
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Utvärdering av kundanpassad arbetstid vid Volvo Lastvagnar i Tuve
- 2000
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- Consumer report (“avnämarrapport” in Swedish) for the company in question which is financed by a research foundation. It is a questionnaire survey, in this case, a so-called total survey of all blue-collar employees. This was beginning of a long-term cooperation with the Swedish Metal Workers Union (Metal in Swedish) concerning among other things questionnaire surveys.
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| 65. |
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| 66. |
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| 67. |
- Engzell, Jeanette, 1989-, et al.
(författare)
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Academic intrapreneurs navigating multiple institutional logics : An integrative framework for understanding and supporting intrapreneurship in universities
- 2024
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Ingår i: Technovation. - : Elsevier. - 0166-4972 .- 1879-2383. ; 129
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Tidskriftsartikel (refereegranskat)abstract
- Although several studies have extensively discussed the role of intrapreneurs, individuals’ experiences of intrapreneurial processes in the academic context remain largely unexplored. The prominence of intrapreneurial logic in academia has led to increased institutional complexity and highlighting the need for an improved understanding of how to navigate multiple logics present at individual, organizational, and field levels to attain the desired intrapreneurial outcomes. To address these challenges, we propose an integrative framework that captures both organizational and individual-level responses to these multiple logics, while also incorporating intrapreneurial logic. Upon analyzing data from nineteen intrapreneurs across three universities, this study reveals that universities actively uphold the academic logic that intrapreneurs identify as a barrier, compelling them to refine their skills and actively hybridize logics by integrating multiple specific elements of intrapreneurship, teaching, and research. Simultaneously, universities incorporate intrapreneurial logic into their operational processes, even combining multiple logics, which intrapreneurs leverage within their own activities to push their ideas forward. The study offers implications for intrapreneurship literature, academic management, and policymakers to more effectively foster intrapreneurial activities.
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| 68. |
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| 69. |
- Farjana, Sadia, 1983, et al.
(författare)
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Dry film photoresist-based microfabrication : A new method to fabricate millimeter-wave waveguide components
- 2021
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Ingår i: Micromachines. - : MDPI AG. - 2072-666X. ; 12:3
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Tidskriftsartikel (refereegranskat)abstract
- This paper presents a novel fabrication method based on dry film photoresists to realize waveguides and waveguide-based passive components operating at the millimeter-wave frequency (30–300 GHz). We demonstrate that the proposed fabrication method has a high potential as an alternative to other microfabrication technologies, such as silicon-based and SU8-based micromachining for realizing millimeter-wave waveguide components. Along with the nearly identical transfer of geometrical structures, the dry film photoresist offers other advantages such as fewer processing steps, lower production cost, and shorter prototyping time over the conventional micromachining technologies. To demonstrate the feasibility of the fabrication process, we use SUEX dry film to fabricate a ridge gap waveguide resonator. The resonator is designed to exhibit two resonances at 234.6 and 284 GHz. The measured attenuation at 234 GHz is 0.032 dB/mm and at 283 GHz is 0.033 dB/mm for the fabricated prototype. A comparative study among different existing technologies indicates that the reported method can give a better unloaded Q-value than other conventional processes. The measured unloaded Q-values are in good agreement with the simulated unloaded Q-values. The signal attenuation indicates that SUEX dry film photoresists can be used to fabricate passive devices operating at millimeter-wave frequencies. Moreover, this new fabrication method can offer fast and low-cost prototyping. © 2021 by the authors.
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| 70. |
- Fredenberg, Erik, 1979-
(författare)
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Spectral Mammography with X-Ray Optics and a Photon-Counting Detector
- 2009
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- Early detection is vital to successfully treating breast cancer, and mammography screening is the most efficient and wide-spread method to reach this goal. Imaging low-contrast targets, while minimizing the radiation exposure to a large population is, however, a major challenge. Optimizing the image quality per unit radiation dose is therefore essential. In this thesis, two optimization schemes with respect to x-ray photon energy have been investigated: filtering the incident spectrum with refractive x-ray optics (spectral shaping), and utilizing the transmitted spectrum with energy-resolved photon-counting detectors (spectral imaging). Two types of x-ray lenses were experimentally characterized, and modeled using ray tracing, field propagation, and geometrical optics. Spectral shaping reduced dose approximately 20% compared to an absorption-filtered reference system with the same signal-to-noise ratio, scan time, and spatial resolution. In addition, a focusing pre-object collimator based on the same type of optics reduced divergence of the radiation and improved photon economy by about 50%. A photon-counting silicon detector was investigated in terms of energy resolution and its feasibility for spectral imaging. Contrast-enhanced tumor imaging with a system based on the detector was characterized and optimized with a model that took anatomical noise into account. Improvement in an ideal-observer detectability index by a factor of 2 to 8 over that obtained by conventional absorption imaging was found for different levels of anatomical noise and breast density. Increased conspicuity was confirmed by experiment. Further, the model was extended to include imaging of unenhanced lesions. Detectability of microcalcifications increased no more than a few percent, whereas the ability to detect large tumors might improve on the order of 50% despite the low attenuation difference between glandular and cancerous tissue. It is clear that inclusion of anatomical noise and imaging task in spectral optimization may yield completely different results than an analysis based solely on quantum noise.
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