Experiments show that faceting of a vicinal surface can be induced by surface reconstruction, which often occurs only on sufficiently wide terraces. We study this process using a one-dimensional terracestep model that assigns a lower free energy to terraces wider than a critical width wc . When mass is conserved locally, through surface diffusion, we find that a reconstructed terrace can nuclea...

The set of all Pareto optimal, strategy proof and non-bossy mechanisms is characterized as the set of trading and braiding mechanisms. Fix a matching problem with more than three houses and a profile of preferences. At the start of a trading and braiding mechanism at most one house is brokered; all other houses are owned. In the first trading round, owners point to their most preferred houses, ...

The ;400 km2 Clearwater River basin, located on the Pacific flank of the actively uplifting Olympic Mountains of western Washington State, contains a well-preserved flight of Holocene fluvial terraces. We have collected a large data set of numeric ages from these terraces that is used to elucidate the geomorphic, fluvial, active tectonic, and climatic processes that operate at Holocene spatial ...

A fluid droplet may exhibit self-propelled motion by modifying the wetting properties of the substrate. We propose a model for droplet propagation upon a terraced landscape of ordered layers formed as a result of surface freezing driven by the contact angle dependence on the terrace thickness. Simultaneous melting or freezing of the terrace edge results in a joint droplet-terrace motion. The mo...

A terrace for Zn (a Zn terrace) is an arrangement (a1, a2, . . . , an) of the n elements of Zn such that the sets of differences ai+1 − ai and ai − ai+1 (i = 1, 2, . . . , n−1) together contain each element of Zn\{0} exactly twice. Various general constructions are given for Zn terraces of two special types: zigzag terraces and foxtrot terraces. Some special cases already appear in the literatu...

in the architecture of iranian traditional houses, the ornamentations available in the inscriptions of houses entrance portal express the identity of architects and personality of houses owners and are rooted in their religious and national beliefs and faiths. the main hypothesis of this research is changing the physique and application of religious contents in compliance with the thoughts and ...

Attached garages are known to be associated with indoor air volatile organic compounds (VOCs). This study looked at indoor exposure to VOCs presumably from evaporative emissions of gasoline. Alaskan gasoline contains 5% benzene making benzene a marker for gasoline exposure. A survey of randomly chosen houses with attached garages was done in Anchorage Alaska to determine the exposure and assess...