87 research outputs found
Dynamisch gedrag van grote verslagbruggen
No full textMechanical, Maritime and Materials EngineeringMechanical, Maritime and Materials Engineerin
Multi-Agent Vehicle Routing: Automated Collaboration in Transport Planning
No full textElectrical Engineering, Mathematics and Computer ScienceSoftware TechnologyAlgorithm
Analysis and control design of a cable-suspended parallel robot under consideration of non-linear effects
No full textMechanical Engineering | Systems and Contro
Conditie meten en evalueren van (top)sporters
No full textVanuit de voetbalwereld is er altijd behoefte aan meer informatie over de fitheid van de spelers. Een belangrijke manier om fitheid te bepalen is hartslag meten. Het ontbreekt momenteel aan software om de hartslag te analyseren. Dit project is erop gericht een applicatie te maken voor het analyseren van harslag data. Er is gekozen voor een web applicatie voor hoge toegankelijkheid van de data en de relatief lage eisen die het stelt aan de clients. In dit verslag zullen we alle uitdagingen bespreken die voortkwamen uit de keuze van een webapplicatie. Het eindresultaat is een webapplicatie die de potentie heeft om de manier van trainen binnen de voetbalwereld te veranderen. De effectiviteit van trainingen zal omhoog gaan, blessures kunnen voorkomen worden en de algemene fitheid van de spelers zal verbeterd worden.Computer ScienceElectrical Engineering, Mathematics and Computer Scienc
Circumnuclear HI disks in radio galaxies: The case of Cen A and B2 0258+35
No full textAbstract. New Hi observations of the nearby radio-loud galaxies Centaurus A and
B2 0258+35 show broad absorption against the unresolved nuclei.
Both sources belong to the cases where blue- and redshifted absorption is observed at
the same time. In previous Cen A observations only a relative narrow range of redshifted
absorption was detected. We show that the data suggest in both cases the existence of a circumnuclear
disk. For Cen A the nuclear absorption might be the atomic counterpart of the
molecular circumnuclear disk that is seen in CO and H2. Higher resolution observations are
now needed to locate the absorption and to further investigate the structure and kinematics
Experimental results of a 112 element phased array feed for the Westerbork Synthesis Radio Telescope
No full textCircumnuclear HI disks in radio galaxies:The case of Cen A and B2 0258+35
No full textAbstract. New Hi observations of the nearby radio-loud galaxies Centaurus A and B2 0258+35 show broad absorption against the unresolved nuclei. Both sources belong to the cases where blue- and redshifted absorption is observed at the same time. In previous Cen A observations only a relative narrow range of redshifted absorption was detected. We show that the data suggest in both cases the existence of a circumnuclear disk. For Cen A the nuclear absorption might be the atomic counterpart of the molecular circumnuclear disk that is seen in CO and H2. Higher resolution observations are now needed to locate the absorption and to further investigate the structure and kinematic
Optimising commensality of radio continuum and spectral line observations in the era of the SKA
No full textThe substantial decrease in star formation density from z=1 to the present day is curious given the relatively constant neutral gas density over the same epoch. Future radio astronomy facilities, including the SKA and pathfinder telescopes, will provide pioneering measures of both the gas content of galaxies and star formation activity over cosmological timescales. Here we investigate the commensalities between neutral atomic gas (HI) and radio continuum observations, as well as the complementarity of the data products. We start with the proposed HI and continuum surveys to be undertaken with the SKA precursor telescope MeerKAT, and building on this, explore optimal combinations of survey area coverage and depth of proposed HI and continuum surveys to be undertaken with the SKA1-MID instrument. Intelligent adjustment of these observational parameters results in a tiered strategy that minimises observation time while maximising the value of the dataset, both for HI and continuum science goals. We also find great complementarity between the HI and continuum datasets, with the spectral line HI data providing redshift measurements for gas-rich, star-forming galaxies with stellar masses Mstellar~10^9 Msun to z~0.3, a factor of three lower in stellar mass than would be feasible to reach with large optical spectroscopic campaigns
A circumnuclear disk of atomic hydrogen in Centaurus A
No full textOpen AccessWe present new observations, performed with the Australia Telescope Compact Array, of the H I absorption in the central regions of Centaurus A. For the first time, absorption is detected against the radio core at velocities blueshifted with respect to the systemic velocity. Moreover, the data show that the nuclear redshifted absorption component is broader than reported before. With these new results, the kinematics of the H I in the inner regions of Cen A appears very similar to that observed in emission for the molecular circumnuclear disk. This suggests that the central H I absorption is not, as was previously claimed, evidence of gas infall into the AGN, but instead is due to a cold, circumnuclear disk
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