As a supplement of the paper, we give further details and analysis of the globally consistent stream line segmentation algorithm. Moreover, a more detailed description of the intrinsic similarity measure for comparing the resulting segments is also provided. Notation. We make use of the following formal concepts: let v(x) denote steady differentiable vector fields with associated over two (d = ...

One of the reasons that topological methods have a limited popularity for the visualization of complex 3D flow fields is the fact that their topological structures contain a number of separating stream surfaces. Since these stream surfaces tend to hide each other as well as other topological features, for complex 3D topologies the visualizations become cluttered and hardly interpretable. One so...

Borealis is a second-generation distributed stream processing engine that is being developed at Brandeis University, Brown University, and MIT. Borealis inherits core stream processing functionality from Aurora [14] and distribution functionality from Medusa [51]. Borealis modifies and extends both systems in non-trivial and critical ways to provide advanced capabilities that are commonly requi...

Social media has recently emerged as an invaluable source of information for decision making. Social media information reflects the interests of virtual communities in a spontaneous and timely manner. The need to understand the massive streams of data generated by social media platforms, such as Twitter and Facebook, has motivated researchers to use machine learning techniques to try to discove...

Work on the generalisation of cartographic line data, so that small scale map data can be derived from larger scales, has led to the development of algorithms for a variety of generalisation operations, including line simplification. A major objective when capturing linear digital map data is the creation of accurate representation of naturally occurring lines, using a minimum of processing tim...

We present 1 and 100MHz ground-based radar data from the onset region of Rutford Ice Stream, West Antarctica, which indicate the form and internal structure of isochrones. In the flowparallel lines, modelled isochrone patterns reproduce the gross pattern of the imaged near-surface layers, assuming steady-state flow velocity from GPS records and the current accumulation rate for the last 200 yea...

In AE Aqr, magnetic fields transfer energy and angular momentum from a rapidly spinning white dwarf to material in the gas stream from the companion star, with the effect of spinning down the white dwarf while flinging the gas stream material out of the binary system. This magnetic propeller produces a host of observable signatures, chief among which are broad single-peaked flaring emission lin...

Borealis is a second-generation distributed stream processing engine that is being developed at Brandeis University, Brown University, and MIT. Borealis inherits core stream processing functionality from Aurora [13] and distribution functionality from Medusa [49]. Borealis modifies and extends both systems in non-trivial and critical ways to provide advanced capabilities that are commonly requi...

Borealis is a second-generation distributed stream processing engine that is being developed at Brandeis University, Brown University, and MIT. Borealis inherits core stream processing functionality from Aurora [11] and distribution functionality from Medusa [45]. Borealis modifies and extends both systems in non-trivial and critical ways to provide advanced capabilities that are commonly requi...