PURPOSE To examine the association of personal values, the built environment, and auto availability with walking for transportation. SETTING Participants were drawn from 11 U.S. metropolitan areas with good transit services. SUBJECTS 865 adults who had recently made or were contemplating making a residential move. MEASURES Respondents reported if walking was their primary mode for nine tr...

This paper discusses the design of a very general architectural framework for navigation and tracking systems that fuse dead-reckoning sensors (e.g. inertial or encoders) with environment-referenced sensors, such as ultrasonic, optical, magnetic, or RF sensors. The framework enables systems that simultaneously track themselves, construct a map of landmarks in the environment, and calibrate sens...

We use evolutionary computation techniques to create real-time reactive controllers for a race-car simulation game: RARS (Robot Auto Racing Simulator). Using genetic programming to evolve driver controllers, we create highly generalized game-playing agents, able to outperform most human-crafted controllers and all machine-designed ones on a variety of game tracks.

We consider the partial difference equations of the Adler-Bobenko-Suris classification, which are characterized as multidimensionally consistent. The latter property leads naturally to the construction of auto-Bäcklund transformations and Lax pairs for all the equations in this class. Their symmetry analysis is presented and infinite hierarchies of generalized symmetries are explicitly construc...

The simple direct method is adopted to find Non-Auto-Backlund transformation for variable coefficient non-linear systems. The (2+1)-dimensional generalized Kadomtsev-Petviashvili equation with variable coefficients is used as an example to elucidate the solution procedure, and its symmetry transformation and exact solutions are obtained.

• Basic Parallel MR Concept (1987-1990) phase array combining sensitivity encoding & hybrids (sub-encoding) • Practical implementations (1997-1999) SMASH: k-space approach SENSE: image domain • Optimization (1999-current) auto-calibration matrix inverse conditioning coil optimization • Extensions (2000-current) generalized SMASH 2-d SENSE & multi-slice arbitrary k-space • Applications (2000-cur...

Two adult cases of thrombohaemolytic thrombocytopenic purpura are described. Both showed striking morphological changes in the red cells with increased saline osmotic fragility, in addition to thrombocytopenia and generalized hyaline thrombi affecting small blood vessels. These changes support the hypothesis that this is a triple auto-immune disorder affecting red cells, platelets, and small bl...

BACKGROUND The equivalency of the Composite International Diagnostic Interview delivered by human interviewers (CIDI) and its computerized version (CIDI-Auto) was examined for anxiety and depressive disorders. METHODS Subjects were 40 patients at an Anxiety Disorders Clinic and 40 general medical practice attenders. The CIDI-Auto and CIDI were administered in counterbalanced order on the same...

Generalized Lax equations are considered in the spirit of Sato theory. Three decompositions of an underlying algebra of pseudo-diierential operators lead, in turn, to three diierent classes of integrable nonlinear hierarchies. These are associated with Kadomtsev-Petviashvili, modiied Kadomtsev-Petviashvili and Dym hierarchies in 2+1 dimensions. Miura-and auto-BB acklund transformations are show...

It is well-known that causal forecasting methods that include appropriately chosen Exogenous Variables (EVs) very often present improved forecasting performances over univariate methods. However, in practice, EVs are usually difficult to obtain and in many cases are not available at all. In this paper, a new causal forecasting approach, called Wavelet Auto-Regressive Integrated Moving Average w...