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- Albrecht, Sophie, 1988-, et al.
(författare)
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Prospective effects of work-time control on overtime, work-life interference and exhaustion in female and male knowledge workers
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Annan publikation (övrigt vetenskapligt/konstnärligt)abstract
- Aims: Employee-based flexible working hours are increasing, particularly among knowledge workers. Research indicates that women and men use work–time control (WTC; control over time off and daily hours) differently: while men work longer paid hours, women use WTC to counteract work–life interference. In a knowledge-worker sample, we examined associations between WTC and overtime, work–life interference and exhaustion and tested if gender moderates the mediating role of overtime.Methods: The sample contained 2248 Swedish knowledge workers. Employing hierarchical regression modelling, we examined effects of control over time off/daily hours on subsequent overtime hours, work–life interference and exhaustion in general and in gender-stratified samples. Using conditional process analysis, we tested moderated mediation models.Results: Control over time off was related to less work–life interference (βmen=-0.117; CI95%: -0.237 to 0.003; βwomen=-0.253; CI95%: -0.386 to -0.120) and lower exhaustion (βmen=-0.199; CI95%: -0.347 to -0.051; βwomen=-0.271; CI95%: -0.443 to -0.100). For control over daily hours, estimates were close to zero. While men worked more overtime (42 minutes/week), we could not confirm gender moderating the indirect effect of control over time off/daily hours on work–life interference/exhaustion via overtime. Independent of gender, effects of control over time off on work–life interference were partly explained by working fewer overtime hours.Conclusion: Control over time off was related to lower exhaustion and better work–life balance (in particular for women). We found no evidence for men’s work–life interference increasing with higher WTC due to working more overtime. Knowledge workers’ control over time off may aid to prevent work–life interference and burnout.
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| 4. |
- Mulugeta, Genene, et al.
(författare)
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Three-dimensional geometry of piggyback thrusting
- 1987
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Ingår i: Geology. - : Geological Society of America. - 0091-7613 .- 1943-2682. ; 15:11, s. 1052-1056
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Tidskriftsartikel (refereegranskat)abstract
- The three-dimensional geometry and kinematics of piggyback stacks of imbricate thrust sheets are illustrated and discussed using a single model shortened in a squeeze box. Strike-parallel geometric elements simulated include lateral ramps, eyed sheath folds, splays, and thrust/thrust interference. Fine details of these structures were exposed by eroding a shortened wedge of sand using a newly developed vacuum-eroding technique. A kinematic analysis of the model shows a stepwise increase in imbricate thrust spacing and/or a decrease in rate of nucleation of imbricate thrusts in the direction of thrust transport. Despite the steady forward advance of a rear wall, the piggyback wedge accreted episodically, recording different strain domains in longitudinal cross sections. Strain partitioning in single layers by bed-length balancing showed an increase in layer shortening with volume loss and a corresponding decrease in imbricate thrusting and ramp folding with depth.
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| 6. |
- Santesson, Sabina
(författare)
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Miniaturised Bioanalytical Chemistry in Acoustically Levitated Droplets
- 2004
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- Fuelled by the current demands of the biological sciences, there is today a growing interest in microscale analysis. Miniaturisation of analytical instruments has become a long-standing trend. Miniaturisation offers several advantages, including rapid separation times, high performance and throughput, reduced costs, etc. But the increased surface area to volume ratio can sometimes be a disadvantage and result in analyte adsorption to walls and interfaces. To circumvent the use of solid container walls and yet enable miniaturised bioanalysis, the airborne analytical system described in this thesis was developed. The system consists of an acoustic levitator where a liquid droplet in the 100 nl-2 µl volume range can be levitated in a nodal point of a standing ultrasonic wave. The levitator is combined with specially designed pl flow-through dispensers to enable additions to the levitated droplet in the pl volume range. To date, several remote detection systems have been fitted with the system. Combined with fluorescence imaging detection, the system has been used for single cell analysis of adipocyte lipolysis and for cell-cell communication studies of adipocytes and pancreatic â-cells; the two key cell types in fat metabolism and thus with high impact in diabetes. Coupled with right angle light scattering detection, the airborne system has been developed for use in precipitation screening of proteins to establish nucleation conditions for application in protein crystallisation. Equipped with Raman spectroscopy detection, the system showed useful for the study of crystal polymorphs. The levitated droplet approach has also been successfully explored for miniaturised two-phase extractions and for use in affinity partitioning of liposomes. The airborne analytical system offers several benefits. The diversity of applications possible, the proven biological compatibility, the small volumes, and the absence of contacting surfaces are all important features. The results strongly speak to recommend the further use and development of this new approach in bioanalytical chemistry.
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| 8. |
- Hansen, Kjetil Falkenberg, Docent, 1972-, et al.
(författare)
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Student involvement in sound and music computing research : Current practices at KTH and KMH
- 2019
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Ingår i: Combined proceedings of the Nordic Sound and Music Computing Conference 2019 and the Interactive Sonification Workshop 2019. - Stockholm. ; , s. 36-42
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Konferensbidrag (refereegranskat)abstract
- To engage students in and beyond course activities has been a working practice both at KTH Sound and Music Computing group and at KMH Royal College of Music since many years. This paper collects experiences of involving students in research conducted within the two institutions. We describe how students attending our courses are given the possibility to be involved in our research activities, and we argue that their involvement both contributes to develop new research and benefits the students in the short and long term. Among the assignments, activities, and tasks we offer in our education programs are pilot experiments, prototype development, public exhibitions, performing, composing, data collection, analysis challenges, and bachelor and master thesis projects that lead to academic publications.
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| 9. |
- Lauria, M., et al.
(författare)
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CNFgen : A generator of crafted benchmarks
- 2017
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Ingår i: 20th International Conference on Theory and Applications of Satisfiability Testing, SAT 2017. - Cham : Springer. - 9783319662626 ; , s. 464-473
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Konferensbidrag (refereegranskat)abstract
- We present CNFgen, a generator of combinatorial benchmarks in DIMACS and OPB format. The proof complexity literature is a rich source not only of hard instances but also of instances that are theoretically easy but “extremal” in different ways, and therefore of potential interest in the context of SAT solving. Since most of these formulas appear not to be very well known in the SAT community, however, we propose CNFgen as a resource to make them readily available for solver development and evaluation. Many formulas studied in proof complexity are based on graphs, and CNFgen is also able to generate, parse and do basic manipulation of such objects. Furthermore, it includes a library cnfformula giving access to the functionality of CNFgen to Python programs.
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