Central Park Squirrel Census Maps

Maps of the Census: a rough guide

This Case Study describes the considerations that are needed to produce maps of data from the Census of Population. The ‘area value’ or choropleth map is the standard means of displaying such information on paper. It is a very imperfect visualisation device. First, it is necessary to be careful about the numbers that are mapped and, in particular, never to map absolute numbers. Second, chorople...

Breeding Raptor Census in Grand Teton National Park, 2001

Computing Cost-Effective Census Maps From Cell Phone Traces

Census maps contain important socio-economic information regarding the population of a country. Computing these maps is critical given that policy makers often times make important decisions based upon such information. However, the compilation of census maps requires extensive resources and becomes highly expensive, especially for emerging economies with limited budgets. On the other hand, the...

A Viable Population of the European Red Squirrel in an Urban Park

Whether urban parks can maintain viable and self-sustaining populations over the long term is questionable. In highly urbanized landscapes, urban parks could play a role in biodiversity conservation by providing habitat and resources to native species. However, populations inhabiting urban parks are usually small and isolated, leading to increased demographic stochasticity and genetic drift, wi...

Park Model of Squirrel Cage Induction Machine including Space Harmonics Effects

An accurate and simpler approach for modelling and simulating the dynamic behavior of squirrel cage induction machines is presented here. The model is based on multiple coupled circuits and takes into account the geometry and winding layout of the machine. All inductances are derived by means of the winding function approach (WFA) and are integrated with the decomposition into their Fourier ser...