We show that the invariant distributions for the horocycle flow on compact hyperbolic surfaces described by Flaminio and Forni [FF03] can be represented as distributions on the ideal circle tensorized with absolutely continuous measures, and use this information to derive their Hölder regularity. 2000 Mathematics Subject Classification: 37D40, 22E40, 46F20.

Street canyon flow regimes are classified using the time-averaged mean flow. The present paper discusses recent work on the dynamics of street canyon flows (important for pollutant transport) and the interaction with the shear layer and atmospheric boundary layer above, with a view to classifying the different regimes in terms of the unsteady characteristics of the flow for different types of c...

Reverse bubbling refers to singularities which develop in geometric flows as one takes a reverse limit t ↓ T rather than the traditional t ↑ T . Flows with this type of singularity may have different or better properties, and can provide alternative ways of flowing past singularities. We survey the original reverse bubbling theory for the harmonic map flow, including recent developments, and ot...

We derive the 2-component Camassa–Holm equation and corresponding N = 1 super generalization as geodesic flows with respect to the H metric on the extended Bott-Virasoro and superconformal groups, respectively. Mathematics Subject Classifications (2000): 53A07, 53B50.

A methodology for identifying key structures in migration flow tables is presented in this chapter. The tables contain flows of persons cross-classified by origin, destination and some other characteristic, such as age or ethnicity. This work is important for both understanding aggregate migration patterns in general and for estimating flows in the context of incomplete migration data. The rese...

Article history: Received 20 October 2011 Received in revised form 11 July 2012 Accepted 12 July 2012 Available online 20 July 2012 In this paper we analyze the relationship between survival, employment growth and firm size in Chile, an economy that has reduced largely its trade barriers in the last three decades. We are particularly interested in analyzing whether the small and medium sized en...

In this paper, we address the question that does FDI alone affect economic growth or interaction of FDI and human capital is required to boost economic growth. We develop the model with an expanding variety of products. We estimate the model using some advanced tests utilizing data on FDI flows from developed countries. We find stronger complementary effects between FDI and human capital on the...

Gait classification is an effective and non-intrusive method for human identification. This paper proposes a system to recognize human identity using optical flow features. The distinguishing characteristic of the proposed system is that we only adopt optical flow information and do not consider shape features or other information. The moving object is detected and located from the flow field u...