Texas is the only US state that limits home equity borrowing to 80 percent of home value. This paper exploits this policy discontinuity around the Texas’ interstate borders and uses a multidimensional regression discontinuity design framework to find that limits on home equity borrowing in Texas lowered the likelihood of mortgage default by about 1 percentage point for all mortgages and 2-4 per...

The quality of transmitted speech is based on the auditory characteristics the degraded signal provokes. In past studies, it has been shown that the main features of speech transmission can be subsumed under the orthogonal perceptual dimensions “discontinuity”, “noisiness”, and “coloration”. In order to gain more insight into the dimensional composition for arbitrary transmission conditions, an...

In this article we provide an algebraic characterization of the subgroups of PSL(3,C) for which the maximum number of complex lines in general position contained in its limit set, according to Kulkarni, is equal to four. Also, we give an explicit description of the discontinuity region, according to Kulkarni, of such groups.

In this paper we investigate the relationship between market structure and the composition of R&D activities. We present an empirical model to demonstrate that when market structure is shuffled by an institutional discontinuity, such as liberalisation, basic and applied activities respond in opposite ways: the former decrease whereas the latter increase. As a consequence, market turmoil is like...

We propose a computationai modei for interpreting iine drawings as three-dimensionai surfaces, based on constraints on iocai surface orientation aiong extremai and discontinuity boundaries. Specific techniques are described for two key processes: recovering the threedimensionai conformation of a space curve (e.g., a surface boundary) from its two-dimensionai projection in an image, and interpoi...

Using data from China's Urban Household Survey and exploiting China's mandatory retirement policy, we use the regression discontinuity approach to estimate the impact of retirement on household expenditures. Retirement reduces total non-durable expenditures by 21 percent. Among the categories of non-durable expenditures, retirement reduces work-related expenditures and expenditures on food cons...

In this paper we describe a final-year undergraduate honours course that requires multimedia computing students to create narrative auditory and visual displays. The aim was to use discontinuity as a catalyst for creativity by getting students to tell a story in non-speech sound and in vision in which each medium conveyed a different mood.