Symmetry and order parameter dynamics of the human odometer

Bipedal gaits have been classified on the basis of the group symmetry of the minimal network of identical differential equations (alias cells) required to model them. Primary bipedal gaits (e.g., walk, run) are characterized by dihedral symmetry, whereas secondary bipedal gaits (e.g., gallop-walk, gallop- run) are characterized by a lower, cyclic symmetry. This fact has been used in tests of human odometry (e.g., Turvey et al. in P Roy Soc Lond B Biol 276:4309–4314, 2009, J Exp Psychol Hum Percept Perform 38:1014–1025, 2012). Results suggest that when distance is measured and reported by gaits from the same symmetry class, primary and secondary gaits are comparable. Switching symmetry classes at report compresses (primary to secondary) or inflates (secondary to primary) measured distance, with the compression and inflation equal in magnitude. The present research (a) extends these findings from overground locomotion to treadmill locomotion and (b) assesses a dynamics of sequentially coupled measure and report phases, with relative velocity as an order parameter, or equilibrium state, and difference in symmetry class as an imperfection parameter, or detuning, of those dynamics. The results suggest that the symmetries and dynamics of distance measurement by the human odometer are the same whether the odometer is in motion relative to a stationary ground or stationary relative to a moving ground

Finding Structure in Time:Visualizing and Analyzing Behavioral Time Series

The temporal structure of behavior contains a rich source of information about its dynamic organization, origins, and development. Today, advances in sensing and data storage allow researchers to collect multiple dimensions of behavioral data at a fine temporal scale both in and out of the laboratory, leading to the curation of massive multimodal corpora of behavior. However, along with these new opportunities come new challenges. Theories are often underspecified as to the exact nature of these unfolding interactions, and psychologists have limited ready-to-use methods and training for quantifying structures and patterns in behavioral time series. In this paper, we will introduce four techniques to interpret and analyze high-density multi-modal behavior data, namely, to: (1) visualize the raw time series, (2) describe the overall distributional structure of temporal events (Burstiness calculation), (3) characterize the non-linear dynamics over multiple timescales with Chromatic and Anisotropic Cross-Recurrence Quantification Analysis (CRQA), (4) and quantify the directional relations among a set of interdependent multimodal behavioral variables with Granger Causality. Each technique is introduced in a module with conceptual background, sample data drawn from empirical studies and ready-to-use Matlab scripts. The code modules showcase each technique's application with detailed documentation to allow more advanced users to adapt them to their own datasets. Additionally, to make our modules more accessible to beginner programmers, we provide a "Programming Basics" module that introduces common functions for working with behavioral timeseries data in Matlab. Together, the materials provide a practical introduction to a range of analyses that psychologists can use to discover temporal structure in high-density behavioral data.</p

Disaster Recovery: DIY Home Building (semester?), IPRO 324: Disaster Recovery DIY Yourself Home Building IPRO 324 Final Report F06

IPRO 324, Disaster Recovery: Do-It-Yourself Home Building is focused on designing a building manual to aid disaster victims in building new buildings. The objectives of this group are to design a simple but adequate floor plan, create a manual illustrating how to build this design, and to market this manual to a disaster relief organization that would be responsible for the distribution of this manual.Deliverables for IPRO 324: Disaster Recovery - DIY Yourself Home Building for the Fall 2006 semeste

Disaster Recovery: DIY Home Building (semester?), IPRO 324: Disaster Recovery DIY Yourself Home Building IPRO 324 Poster F06

IPRO 324, Disaster Recovery: Do-It-Yourself Home Building is focused on designing a building manual to aid disaster victims in building new buildings. The objectives of this group are to design a simple but adequate floor plan, create a manual illustrating how to build this design, and to market this manual to a disaster relief organization that would be responsible for the distribution of this manual.Deliverables for IPRO 324: Disaster Recovery - DIY Yourself Home Building for the Fall 2006 semeste

Disaster Recovery: DIY Home Building (semester?), IPRO 324

IPRO 324, Disaster Recovery: Do-It-Yourself Home Building is focused on designing a building manual to aid disaster victims in building new buildings. The objectives of this group are to design a simple but adequate floor plan, create a manual illustrating how to build this design, and to market this manual to a disaster relief organization that would be responsible for the distribution of this manual.Deliverables for IPRO 324: Disaster Recovery - DIY Yourself Home Building for the Fall 2006 semeste

Disaster Recovery: DIY Home Building (semester?), IPRO 324: Disaster Recovery DIY Yourself Home Building IPRO 324 Abstract F06

IPRO 324, Disaster Recovery: Do-It-Yourself Home Building is focused on designing a building manual to aid disaster victims in building new buildings. The objectives of this group are to design a simple but adequate floor plan, create a manual illustrating how to build this design, and to market this manual to a disaster relief organization that would be responsible for the distribution of this manual.Deliverables for IPRO 324: Disaster Recovery - DIY Yourself Home Building for the Fall 2006 semeste

Disaster Recovery: DIY Home Building (semester?), IPRO 324: Disaster Recovery DIY Yourself Home Building IPRO 324 Midterm Report F06

IPRO 324, Disaster Recovery: Do-It-Yourself Home Building is focused on designing a building manual to aid disaster victims in building new buildings. The objectives of this group are to design a simple but adequate floor plan, create a manual illustrating how to build this design, and to market this manual to a disaster relief organization that would be responsible for the distribution of this manual.Deliverables for IPRO 324: Disaster Recovery - DIY Yourself Home Building for the Fall 2006 semeste

Disaster Recovery: DIY Home Building (semester?), IPRO 324: Disaster Recovery DIY Yourself Home Building IPRO 324 IPRO Day Presentation F06

IPRO 324, Disaster Recovery: Do-It-Yourself Home Building is focused on designing a building manual to aid disaster victims in building new buildings. The objectives of this group are to design a simple but adequate floor plan, create a manual illustrating how to build this design, and to market this manual to a disaster relief organization that would be responsible for the distribution of this manual.Deliverables for IPRO 324: Disaster Recovery - DIY Yourself Home Building for the Fall 2006 semeste

Disaster Recovery: DIY Home Building (semester?), IPRO 324: Disaster Recovery DIY Yourself Home Building IPRO 324 Project Plan F06

IPRO 324, Disaster Recovery: Do-It-Yourself Home Building is focused on designing a building manual to aid disaster victims in building new buildings. The objectives of this group are to design a simple but adequate floor plan, create a manual illustrating how to build this design, and to market this manual to a disaster relief organization that would be responsible for the distribution of this manual.Deliverables for IPRO 324: Disaster Recovery - DIY Yourself Home Building for the Fall 2006 semeste