| 1. |
- Forsberg, Håkan, et al.
(författare)
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Methods for Enhancement of a Master of Engineering Programme
- 2019
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Konferensbidrag (refereegranskat)abstract
- This paper describes methods we used to improve our Master of Engineering programme in Dependable Aerospace Systems together with the industry. The target audience is mainly programme coordinators/managers who are in the process to develop their programmes for future demands. The two main questions we address are: Q1 – How do we ensure a good progression within a programme to ensure the industry’s current and future needs in engineering skills? and Q2 – How do we ensure students become acquainted with research during their studies? The results indicate that our suggested method to analyse programme progression through subject abilities supports developer of engineering programmes and that our approach to undergraduate research opportunities is a way forward to introduce students to research early.
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| 2. |
- Hagenbjörk-Gustafsson, Annika, et al.
(författare)
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Determinants of personal exposure to some carcinogenic substances and nitrogen dioxide among the general population in five Swedish cities
- 2014
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Ingår i: Journal of Exposure Science and Environmental Epidemiology. - : Springer Science and Business Media LLC. - 1559-0631 .- 1559-064X. ; 24:4, s. 437-443
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Tidskriftsartikel (refereegranskat)abstract
- Environmental levels of airborne carcinogenic and related substances are comparatively better known than individual exposure and its determinants. We report on a personal monitoring program involving five Swedish urban populations. The aim of the program was to investigate personal exposure to benzene, 1,3-butadiene, formaldehyde, and nitrogen dioxide (NO2). The measurements were performed among 40 inhabitants during seven consecutive days, in one urban area each year, during 2000-2008. The estimated population exposure levels were 1.95 mu g/m(3) for benzene, 0.56 mu g/m(3) for 1,3-butadiene, 19.4 mu g/m(3) for formaldehyde, and 14.1,mu g/m(3) for NO2. Statistical analysis using a mixed-effects model revealed that time spent in traffic and time outdoors contributed to benzene and 1,3- butadiene exposure. For benzene, refueling a car was an additional determinant influencing the exposure level. Smoking or environmental tobacco smoke were significant determinants of exposure to NO2, benzene, and 1, 3-butadiene. Those with a gas stove had higher NO2 exposure. Living in a single-family house increased the exposure to formaldehyde significantly. In a variance component model, the between-subject variance dominated for 1,3-butadiene and formaldehyde, whereas the between-city variance dominated for NO2. For benzene, the between-subject and between-cities variances were similar.
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| 3. |
- Zhang, Renyun, et al.
(författare)
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Soap-film coating : High-speed deposition of multilayer nanofilms
- 2013
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Ingår i: Scientific Reports. - Nature Publishing Group : Springer Science and Business Media LLC. - 2045-2322. ; 3, s. Art. no. 1477-
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Tidskriftsartikel (refereegranskat)abstract
- The coating of thin films is applied in numerous fields and many methods are employed for the deposition of these films. Some coating techniques may deposit films at high speed; for example, ordinary printing paper is coated with micrometre-thick layers of clay at a speed of tens of meters per second. However, to coat nanometre thin films at high speed, vacuum techniques are typically required, which increases the complexity of the process. Here, we report a simple wet chemical method for the high-speed coating of films with thicknesses at the nanometre level. This soap-film coating technique is based on forcing a substrate through a soap film that contains nanomaterials. Molecules and nanomaterials can be deposited at a thickness ranging from less than a monolayer to several layers at speeds up to meters per second. We believe that the soap-film coating method is potentially important for industrial-scale nanotechnology.
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| 4. |
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| 5. |
- Agelis, Sacki
(författare)
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Reconfigurable Optical Interconnection Networks for High-Performance Embedded
- 2005
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Licentiatavhandling (övrigt vetenskapligt/konstnärligt)abstract
- In embedded computer and communication system the capacity demand for interconnection networks is increasing continuously in order to achieve high-performance systems. Recent breakthroughs show that by using reconfigurability inside a single chip substantial performance gains can be added. However, in this thesis the focus is on system level reconfigurability (between chips or modules) and the performance gains that potentially can be achieved by having support for runtime reconfigurability on the system level.This thesis addresses the field of runtime system level reconfigurability with the use of optics in switches and routers for data- and telecommunications, and in multi-processor systems used for embedded signal processing. Several reconfigurable systems for switching and routing with support to adapt for asymmetric traffic patterns are proposed and compared to identify how design choices affect flexibility, performance etc. The proposed solutions are characterized by their multistage optical interconnection networks with reconfigurable shuffle patterns, where the reconfigurability is provided by micro-optical-electrical mechanical systems. More specifically, application-specific bottlenecks can be resolved by reconfiguring the interconnection network according to the current application demands. The benefits of the architectural solutions are confirmed by simulations that clearly show that the architectures can achieve high performance for both symmetric application characteristics and for several classes of asymmetric application characteristics. The final architectural solution is characterized by electronic packet-switches interconnected through an optical backplane, which is reconfigurable. Moreover, the thesis presents how several signal processing applications can be mapped to run concurrently in a time-shared scheme on a single reconfigurable multi-processor system that has high flexibility to adapt for the application currently at hand. The interconnection network is then adapted (reconfigured) according to the demands of the currently executed application in each time instance. The analysis shows that it is feasible to build such a system with today’s components.
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| 7. |
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| 8. |
- Alm Fjellborg, Andreas, PhD, 1982-, et al.
(författare)
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Commuting patterns of preschool children in metropolitan Stockholm
- 2022
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Ingår i: Regional Science Policy & Practice. - : John Wiley & Sons. - 1757-7802. ; 14:4, s. 960-980
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Tidskriftsartikel (refereegranskat)abstract
- This full population study of travel-to-preschool patterns ofthe youngest children (< 6 years old) in metropolitanStockholm analyses how school markets, even at an earlystage, reproduce inequalities related to social and geograph-ical distances. Our findings show that families with foreignbackgrounds tend to convert educational capital into socialcapital by sending their children to preschools in moresocio-economically favourable neighbourhoods. Further-more, we detect avoidance behaviour among the majoritypopulation in ethnically mixed neighbourhoods, whichindicate that some native families are inclined to avoidpreschools with high shares of non-native peers.
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| 9. |
- Alm Fjellborg, Andreas, PhD, 1982-, et al.
(författare)
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Even in preschools : analysing the preschool and neighbourhood segregation gap in Swedish municipalities
- 2023
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Ingår i: European Sociological Review. - : Oxford University Press. - 0266-7215 .- 1468-2672. ; 39:5, s. 677-691
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Tidskriftsartikel (refereegranskat)abstract
- Preschool segregation has not been the focus of research efforts to the same extent as compulsory school segregation. This is at least in part a consequence of the lack of large-scale, registry-based data sources on where children live and where they attend preschool. This paper presents a full-population account of discrepancies between preschool segregation and neighbourhood segregation covering the Swedish population. Data includes preschool children as well as their parents’ income, education, ethnic background, and place of residence. Findings indicate that while preschool segregation does not differ from neighbourhood segregation to the same extent as previous research has shown for school segregation, there are systematic differences affecting the level of segregation across Sweden and in various types of municipalities. Studies on school level show segregation by foreign background and income to be most prominent, whilst preschool segregation mostly concerns parents’ educational attainment. Furthermore, the findings show that the geographical distribution of private and public preschools affects levels of segregation. This conclusion supports the general argument that the free-choice reform in the Swedish school system tends to raise levels of school segregation above the levels of residential segregation—even in preschools.
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| 10. |
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