We study a long-recognised but under-appreciated symmetry called "dynamical similarity" and illustrate its relevance to many important conceptual problems in fundamental physics. Dynamical similarities are general transformations of system where the unit Hamilton's principal function is rescaled, therefore represent kind dynamical scaling with formal properties that differ from standard symmetr...

The paper provides a possible explanation for the occurrence of uniform, fixedproportion rules for sharing surplus in two-sided markets. We study a two-sided matching model with transferable utility where agents are characterized by privately known, multi-dimensional attributes that jointly determine the surplus of each potential partnership. We ask the following question: for what divisions of...

We used time series of biomass and catches for the major commercial groundfish stocks in the Eastern Bering Sea/Aleutian Islands region and in he Gulf of Alaska to compute annual surplus production for 1977–2004. Annual surplus production and average annual biomass were aggregated cross stocks within each region to examine the relationship between total surplus production and total aggregated b...

Innovations in beef carcass fabrication to improve subprimal yield, retail cut yield, and overall carcass value were evaluated. Alternating sides from 30 beef carcasses were assigned to either an innovative or conventional style of fabrication. The innovative method resulted in greater (P<0.001) total subprimal yield and less (P<0.001) lean trimmings from the forequarter; however, hindquarter t...

Numerous Web usage metrics exist to evaluate the online success of Internet-only retailers. In the domain of Web merchandizing, success is ultimately measured by the number of purchases accomplished. Basic statistics such as conversion and traffic have been proposed to quantify this notion of success. However, when it comes to retailers with multiple distribution channels, there is a definite l...

This studyexamines the hybridizationof ethnic cultures in the U.S., using rice products as a case in point. The paper presents and analyzesphotographic observations of various brands of ricefrom six cultures in local stores in an American Midwestern city. The analysis of the rice brands helps us understand the first and the third of the three levels of hybridity. The firstlevel hybridity, or me...