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Vibration insulation of footbridges so as to reduce human discomfort

Low frequency vibrations in footbridges is a cause of annoyance for pedestrians crossing the bridge. Bagers bro, a footbridge built in Malmö (Sweden) had several constraints in the physical design that caused the first eigenmode of the bridge to be at 1.8Hz which is a severe problem for pedestrians. Therefore the bridge was fitted with tuned mass dampers to mitigate the vibration problem. To evalu

Disturbance Management in a DC Grid using a Hierarchical Control Structure

DC grids will play a key role in the future, interconnecting generation and load centers as well as energy markets. Large multi-terminal VSC-HVDC systems of high capacity will require automated coordination for several operation scenarios especially when operating under disturbances. With this in mind, and considering the dynamics of a DC system, communication loss events are considered severe dis

Case mix adjustment of health outcomes, resource use and process indicators in childbirth care : A register-based study

Background: Unwarranted variation in care practice and outcomes has gained attention and inter-hospital comparisons are increasingly being used to highlight and understand differences between hospitals. Adjustment for case mix is a prerequisite for meaningful comparisons between hospitals with different patient populations. The objective of this study was to identify and quantify maternal characte

Cerebellar Neuronal Codes-Perspectives from Intracellular Analysis In Vivo

An accurate interpretation of the neuronal code readouts from behavioral recordings will be possible only when there is an understanding of the connectivity structure of the network under study and the format of the input that drives the circuitry. For the cerebellar cortex, this type of knowledge is comparatively advanced and can at least in some aspects be regarded as sufficient for predicting t

Production of bio-oil from lignin extracted from kraft black liquor by the Sunmembrane process

It is essential for the pulp and paper industry to utilize as much of the forest raw material as possible to achieve the sustainability goals and to increase the profit. The fibres that are liberated during the kraft pulping process are used for pulp production, while the rest of the components from the wood are mainly incinerated. Lignin is one major byproduct from the kraft pulping process. It h

Hydraulic testing during drilling: application of the flowing fluid electrical conductivity (FFEC) logging method to drilling of a deep borehole

Drilling of a deep borehole does not normally allow for hydrologic testing during the drilling period. It is only done when drilling experiences a large loss (or high return) of drilling fluid due to penetration of a large-transmissivity zone. The paper proposes the possibility of conducting flowing fluid electrical conductivity (FFEC) logging during the drilling period, with negligible impact on

Old is gold? The effects of employee age on innovation and the moderating effects of employment turnover

There is consistent evidence in the literature that an average employee's age is negatively related to firm-level innovativeness. This observation has been explained by older employees working with outdated technological knowledge and being characterized by reduced cognitive flexibility. We argue that firms can mitigate this effect through employee turnover. In particular, turnover of R&D work

High pressure torsion to refine grains in pure aluminum up to saturation : Mechanisms of structure evolution and their dependence on strain

High-pressure torsion was used for the deformation processing of high-purity aluminum (4N-Al), while high-resolution electron-backscatter diffraction was used for the analysis of evolution of qualitative and quantitative microstructural characteristics. This study reveals a rather full picture of microstructure evolution in the high stacking fault energy fcc material and makes a continuous link be

Asymmetric accumulative roll bonding of aluminium-titanium composite sheets

Aluminium-titanium (Al/Ti) composite sheets were fabricated via asymmetric accumulative roll bonding (AARB), which capitalises on additional shear to enhance plastic deformation. Multi-layers of Al alloy (AA1050) and commercially-pure Ti sheets were alternatively stacked and rolled-bonded with varied roll diameter ratios (dr) ranging from 1 to 2, for up to four passes. Annealing of selected compos

Plasma Brain-Derived Neurotrophic Factor and Psychopathology in Attempted Suicide

Background/Aims: Increasing evidence suggests a link between brain-derived neurotrophic factor (BDNF) and suicidal behaviour (SB). Furthermore, decreased peripheral BDNF levels have been associated with clinical symptoms in various psychiatric disorders as well as with personality dimensions in healthy individuals. However, the relationship between BDNF and psychopathology is poorly investigated r